US Pat. No. 9,300,087

MOUNTABLE CABLE INTERFACE

TRANE INTERNATIONAL INC.,...

1. A mounting plate for securing a plug of a network cable to a jack of an electronic device, the mounting plate comprising:
an inner wall that generally defines an inner passageway, the inner passageway configured to receive placement of at least
a portion of the plug of the network cable, the inner wall being configured to engage a locking clip of the plug when the
plug is operably positioned in the inner passageway to displace the locking clip to a position that prevents the locking clip
from lockingly engaging a mating protrusion in an aperture of the jack.

US Pat. No. 9,494,327

UV LAMP SERVICE LIFE INDICATOR DEVICE AND METHOD OF USING THE SAME

TRANE INTERNATIONAL INC.,...

1. A UV lamp service life indicator device, comprising:
an indicator member including a UV degradable material that degrades at a rate sufficient to track a useful life of a UV lamp,
wherein the indicator member indicates a status of the useful life of the UV lamp, and
wherein the indicator member includes an elongate member of which the strength degrades at a rate sufficient to track a useful
life of a UV lamp.

US Pat. No. 9,228,758

MODULATING GAS FURNACE

Trane International Inc.,...

1. A modulating gas furnace, comprising:
a variable speed draft blower;
a modulating gas valve;
a low pressure tap and a high pressure tap; and
at least one processor configured to:
monitor a differential pressure between the low pressure tap and the high pressure tap;
learn an intermediate differential pressure value associated with operating the modulating gas furnace at an intermediate
output capacity that is between a minimum output capacity of the modulating gas furnace and a maximum output capacity of the
modulating gas furnace;

learn at least one of a high differential pressure value associated with operating the modulating gas furnace at the maximum
output capacity and a low differential pressure value associated with operating the modulating gas furnace at the minimum
output capacity;

establish an estimated operating curve using either the intermediate differential pressure value and the low differential
pressure value or using the intermediate differential pressure value and the high differential pressure value; and

control the variable speed draft blower and the modulating gas valve in accordance with the estimated operating curve, wherein
the estimated operating curve is established using the intermediate differential pressure value and the low differential pressure
value in response to a demand for heat being equal to or greater than the minimum output capacity and being less than or equal
to the intermediate output capacity, and wherein the estimated operating curve is established using the intermediate differential
pressure value and the high differential pressure value in response to the demand for heat being greater than the intermediate
output capacity.

US Pat. No. 9,733,023

RETURN WATERBOX FOR HEAT EXCHANGER

TRANE INTERNATIONAL INC.,...

1. A return waterbox for a heat exchanger, comprising:
a return waterbox cover having an open end and a back end; and
an insert positioned inside the return waterbox cover and configured to receive and redirect water within the insert, the
insert including a main divider and an outer wall that extends outward from a major surface of the main divider and is at
least partially disposed on an outer perimeter of the main divider,

wherein the insert defines a first water flow path within the insert, and a space between the main divider and the back end
of the return waterbox cover defines a second water flow path.

US Pat. No. 9,310,090

HVAC SYSTEM WITH LOCATION DETERMINATION CAPABILITY

Trane International Inc.,...

1. A heating, ventilation, and/or air conditioning (HVAC) system, comprising:
a system controller comprising:
a location determination module configured to automatically determine the location of the HVAC system in response to initialization
of power to the system controller.

US Pat. No. 9,188,137

BLOWER HOUSING

Trane International Inc.,...

1. A blower housing, comprising:
a discharge direction;
an axis of rotation;
a polar axis that, when the blower housing is viewed orthogonally relative to the axis of rotation, originates from the axis
of rotation and extends through a relatively larger fluid flow area of the blower housing both perpendicularly away from the
axis of rotation and perpendicularly relative to the discharge direction, wherein a rotational direction of increasing angular
values relative to the polar axis is the rotational direction in which an initial offset from the polar axis occurs generally
in the discharge direction;

an angular sweep of increasing fluid flow cross-sectional area that begins at 90 degrees as measured from the polar axis and
ends at 390 degrees as measured from the polar axis;

an axial expansion that extends along the entirety of the angular sweep, wherein the axial expansion comprises an increasing
distance between a first sidewall and a second sidewall with an increasing angular value relative to the polar axis; and

an axial contraction located at an angularly greater value than the angular sweep, wherein the axial contraction comprises
a progressively decreasing distance between the first sidewall and the second sidewall with an increasing angular value relative
to the polar axis, and wherein a fluid flow cross-sectional area of the axial contraction is equal to or greater than the
greatest fluid flow cross-sectional area of the angular sweep.

US Pat. No. 9,261,388

METHODS AND SYSTEMS TO MEASURE FLUID FLOW

TRANE INTERNATIONAL INC.,...

1. A method to measure total volumetric fluid flow rate through a fluid flow passage comprising:
obtaining a fluid flow parameter value in a measuring section of the fluid flow passage;
obtaining a volumetric fluid flow rate by plotting the parameter value on a correlation between the parameter value and the
volumetric fluid flow rate of the measuring section; and

obtaining the total volumetric fluid flow rate by plotting the parameter value obtained in the measuring section on a correlation
between the parameter values and the total volumetric fluid flow;

wherein the measuring section is smaller than the fluid flow passage.

US Pat. No. 9,291,355

SYSTEM AND METHOD FOR CONTROLLING A FURNACE

Trane International Inc.,...

1. A modulating gas furnace, comprising:
a modulating combustion system, comprising:
a burner assembly;
a modulating gas valve assembly configured to modulate an amount of fuel gas delivered to the burner assembly as a result
of a measured pressure differential; and

at least one of (1) a pressure sensor configured to measure the pressure differential and (2) a low pressure limit switch,
an intermediate pressure limit switch, and a high pressure limit switch, wherein each of the low pressure limit switch, the
intermediate pressure limit switch, and the high pressure limit switch are configured to actuate at different pressure differential
values;

wherein the measured pressure differential is measured between an upstream pressure tap disposed in a combustion space and
a downstream pressure tap disposed within a header; and

wherein the modulating combustion system is configured to selectively maintain steady state operation at a plurality of firing
rates within at least one of a cycling mode, a modulating mode in a lower range, and a modulating mode in an upper range.

US Pat. No. 9,261,277

INDUCER SPEED CONTROL METHOD FOR COMBUSTION FURNACE

Trane International Inc.,...

1. A method for operating a multistage combustion furnace, said combustion furnace including a heat exchanger including at
least one combustion gas flowpath, an inducer blower for inducing the flow of air and combustion gases through said flowpath,
for discharging combustion gases to a vent conduit, a blower motor drivably connected to said blower, pressure sensing means
for sensing the pressure within the combustion gas flowpath at a predetermined location, a combustion fuel control valve and
a control system including a microprocessor operably connected to said control valve, said blower motor, said pressure sensing
means and to a thermostat for receiving signals for a call for heat for a space serviced by said furnace, said method comprising:
starting said combustion furnace at a first firing rate in response to a call for heat by said thermostat;
starting said blower motor at a predetermined speed for said first firing rate;
learning a blower speed for said first firing rate, wherein the blower speed at which said pressure sensing means is actuated
is the learned blower speed for said first firing rate; and

determining a blower speed for said blower for a different firing rate based on the learned blower speed for said first firing
rate.

US Pat. No. 9,273,986

WATER FLOW MEASUREMENT DEVICE

TRANE INTERNATIONAL INC.,...

1. A chiller system comprising:
an evaporator for evaporating a refrigerant;
a water pipe in fluid communication with the evaporator, the water pipe configured to allow water to pass through at a water
flow rate and to circulate the water with the evaporator to exchange heat with the refrigerant in the evaporator;

a flow restrictor tube within the water pipe configured to allow the water to flow through the flow restrictor tube at a reduced
flow rate relative to the water flow rate, wherein the flow restrictor tube includes a first portion having a constant inside
diameter and a tapered portion tapering in a downstream direction to a second portion having an inside diameter smaller than
the constant inside diameter of the first portion, the flow restrictor tube having a longitudinal axis, the first portion
having a length in the direction of the longitudinal axis being greater than a length of the tapered portion; and

a measuring probe passing through walls of the water pipe and the walls of the first portion of the flow restrictor tube upstream
of the tapered portion and including an accuracy range of flow rates less than the water flow rate, the measuring probe configured
to measure the reduced flow rate within the flow restrictor tube, wherein the reduced flow rate is within the accuracy range.

US Pat. No. 9,267,717

SYSTEM AND METHOD OF CHARGE MANAGEMENT

Trane International Inc.,...

1. A heat exchanger, comprising:
an undivided header;
a divided header that comprises a divider that defines a division between an upper region comprising a plurality of supply
heat exchanger tubes configured to carry refrigerant into the undivided header and a lower region comprising a plurality of
return heat exchanger tubes configured to carry refrigerant from the undivided header, wherein the lower region is disposed
vertically lower than the upper region; and

a passive charge management device associated with and mounted to the undivided header and comprising:
an internal volume;
an upper tube connecting the internal volume in direct fluid communication with the undivided header at a first vertical height;
and

a lower tube connecting the internal volume in direct fluid communication with the undivided header at a second vertical height
that is vertically lower than the first vertical height;

wherein a majority of the internal volume is located adjacent to and vertically below a vertical height of the divider defining
the division between the upper region and the lower region.

US Pat. No. 9,181,984

ALIGNMENT FEATURE FOR HUB AND DRIVESHAFT ASSEMBLY

Trane International Inc.,...

1. A hub and shaft assembly, comprising:
a substantially cylindrical shaft comprising a recessed flat portion formed on a substantially cylindrical side of the shaft,
the flat portion being associated with an insertion end of the shaft; and

a hub configured to selectively receive a portion of the shaft, the hub comprising:
a body having an axial bore therethrough, the axial bore being at least partially circumferentially bounded by an axial bore
wall having an axial bore inner surface, the axial bore inner surface coinciding with a region of the axial bore wall at which
a diameter of the axial bore wall is at a minimum;

a shaft entry surface of the axial bore wall at least partially bounding an entry into the axial bore;
a set screw hole that extends through the axial bore wall and at least partially defines a set screw opening into the axial
bore;

an alignment feature at least partially protruding from the axial bore inner surface and into the axial bore, at least a portion
of the protruding portion of the alignment feature being located between the shaft entry surface of the axial bore wall and
at least a portion of the set screw opening wherein upon an initial longitudinal insertion of the insertion end of the shaft
into the axial bore past the shaft entry surface, a portion of the shaft is in longitudinal alignment with a portion of the
axial bore inner surface and at least a portion of the protruding portion of the alignment feature is received in a space
between the flat portion of the shaft and the axial bore inner surface; and

a concavity of the axial bore wall having a concavity total volume substantially similar to an alignment feature total volume
of the alignment feature, wherein the concavity total volume exists contemporaneously with the alignment feature total volume
and wherein the concavity total volume is open through both the axial bore inner surface and the shaft entry surface; and

wherein a longitudinal distance between at least a portion of the concavity and the set screw hole is less than a shortest
longitudinal distance between the shaft entry surface and the set screw hole.

US Pat. No. 9,486,813

AIR CLEANING SYSTEMS AND METHODS

Trane International Inc.,...

1. An HVAC system, comprising:
an air cleaner;
a fan configured to selectively generate an air flow, wherein at least a portion of the air flow is passed through the air
cleaner; and

a controller comprising a user interface and configured to receive an input of a threshold criterion value associated with
the airflow generated by the fan via the user interface, determine a substantially current air flow related criterion value
associated with the airflow generated by the fan, compare the air flow related criterion value to the threshold criterion
value, and control operation of the air cleaner in response to the result of the comparison between the air flow related criterion
value and the threshold criterion value, wherein the air cleaner is operated at a power level setting less than a maximum
power setting of the air cleaner in response to the result of the comparison that the air flow related criterion value is
less than the threshold criterion value.

US Pat. No. 9,448,271

DIAGNOSTICS FOR SYSTEMS INCLUDING VARIABLE FREQUENCY MOTOR DRIVES

Trane International Inc.,...

1. A diagnostic method for a system comprising a variable frequency drive, a motor structured to drive a mechanical load,
a connector electrically coupling the variable frequency drive and the motor, and a controller structured to control operation
of the variable frequency drive, the variable frequency drive including an inrush relay and a power factor correction (PFC)
circuit operatively coupled with a DC bus and an inverter operatively coupled with the DC bus and the motor, the method comprising:
performing a first procedure with the controller including first evaluating a voltage of the DC bus after closing the inrush
relay and activating the PFC circuit and setting a value of a first diagnostic code based upon the first evaluating;

performing a second procedure with the controller including sequentially turning on each one of a plurality of switches of
the inverter while concurrently turning off each other switch of the inverter;

performing a third procedure with the controller including injecting a current to one of the plurality of switches of the
inverter which is turned on, second evaluating a current of at least one phase of the motor, and setting a value of at least
one additional diagnostic code based upon the second evaluating;

outputting first diagnostic information indicating a malfunction of the variable frequency drive if the value of a first diagnostic
code indicates an error; and

outputting second diagnostic information indicating a malfunction of the motor or the connector if the value of the at least
one additional diagnostic code indicates an error.

US Pat. No. 9,303,882

BLOW THROUGH AIR HANDLER

Trane International Inc.,...

6. An air handling unit, comprising:
a cabinet comprising a first air opening and a second air opening;
a blower unit comprising an air outlet, wherein the blower unit is disposed within the cabinet and adjacent to the first air
opening, and wherein the blower unit is configured to provide an airflow via a discharge airflow path having a downstream
direction that extends from the air outlet to the second air opening, the discharge airflow path having a longitudinal axis;

a heat exchanger comprising a first section and a second section, wherein each of the first section and the second section
comprise a plurality of fins, and wherein the heat exchanger is disposed within the cabinet adjacent to and downstream of
the air outlet of the blower unit and adjacent to the second air opening; and

at least one electrically-powered resistive heating element located adjacent to the second air opening, wherein the at least
one electrically-powered resistive heating element is at least partially located between the first section of the heat exchanger
and the second section of the heat exchanger and disposed downstream of the heat exchanger in the discharge airflow path of
the blower unit, and wherein the plurality of fins of the first section of the heat exchanger and the plurality of fins of
the second section of the heat exchanger are longitudinally oriented parallel to the longitudinal axis of the discharge airflow
path to stabilize an airflow exiting the heat exchanger prior to the airflow contacting the at least one heating element.

US Pat. No. 9,305,539

ACOUSTIC DISPERSING AIRFLOW PASSAGE

TRANE INTERNATIONAL INC.,...

1. An acoustic dispersing airflow passage, comprising:
a plenum housing having a first end and a second end, the plenum housing being configured to have a length from about 1 to
6 feet from the first end to the second end;

a perforated wall disposed within the plenum housing, the perforated wall having an inner side and an outer side, the outer
side being disposed relatively closer to the plenum housing than the inner side, the inner side being opposite the outer side,
the perforated wall surrounding an airflow passage, the perforated wall extending between the first end and the second end
of the plenum housing, the perforated wall being enclosed by the plenum housing; and

a centrifugal fan disposed outside of the plenum housing, the centrifugal fan being fluidly connected to the airflow passage,
the centrifugal fan being configured to deliver a stream of air through the airflow passage,

an acoustic dispersing space between the plenum housing and the outer side of the perforated wall, the acoustic dispersing
space being free of acoustic dispersing material, the acoustic dispersing space having a first volume, the acoustic dispersing
space surrounding the airflow passage,

the airflow passage having a second volume, and
the first volume being at least two times larger than the second volume.

US Pat. No. 9,291,373

FIXED AND VARIABLE REFRIGERANT METERING SYSTEM

Trane International Inc.,...

1. A refrigerant system that circulates a refrigerant, the refrigerant system comprising:
a compressor system of variable capacity, the compressor system has a suction side and a discharge side;
a first condenser coil connected to receive the refrigerant from the discharge side of the compressor system;
a second condenser coil connected to receive the refrigerant from the discharge side of the compressor system;
a fixed refrigerant metering device connected to receive the refrigerant from the first condenser coil;
a variable refrigerant metering device connected to receive the refrigerant from the second condenser coil;
a first evaporator coil connected to receive the refrigerant from the fixed refrigerant metering device and being further
connected to release the refrigerant to the suction side of the compressor system; and

a second evaporator coil connected to receive the refrigerant from the variable refrigerant metering device and being further
connected to release the refrigerant to the suction side of the compressor system, the refrigerant in the second evaporator
coil is at a lower superheat than the refrigerant in the first evaporator coil.

US Pat. No. 9,261,292

FURNACE HEADER

Trane International Inc.,...

1. A furnace, comprising:
a first drain trap;
a first drain outlet associated with the first drain trap;
a second drain outlet associated with the first drain trap;
a first condensate channel extending at least partially into the first drain trap, wherein the first drain outlet and the
second drain outlet are disposed on substantially opposing sides of the first condensate channel;

a second drain trap;
a third drain outlet associated with the second drain trap;
a fourth drain outlet associated with the second drain trap; and
a second condensate channel extending at least partially into the second drain trap, wherein the third drain outlet and the
fourth drain outlet are disposed on substantially opposing sides of the second condensate channel;

wherein the first drain trap is disposed substantially diagonally from the second drain trap with respect to a center housing;
wherein the first drain outlet and the second drain outlet are located relative to the first drain trap so that gravity driven
drainage of a liquid from the first drain trap is selectable between the first drain outlet and the second drain outlet in
response to a rotational change in an orientation of the furnace; and

wherein the third drain outlet and the fourth drain outlet are located relative to the second drain trap so that gravity driven
drainage of a liquid from the second drain trap is selectable between the third drain outlet and the fourth drain outlet in
response to a rotational change in an orientation of the furnace.

US Pat. No. 9,219,397

MOTOR AND SWITCHING APPARATUSES, SYSTEMS AND METHODS

Trane International Inc.,...

1. An apparatus comprising:
an AC-DC power supply structured to couple with and drive an electric motor;
a sampling and switching device coupled with the power supply, the switching device configured to sample an electrical condition
of a plurality of power line inputs and to selectably connect the power supply with the plurality of power line inputs;

a controller operatively coupled with and structured to control the switching device in a first mode in which the controller
determines a power at which to operate the motor based upon which of the plurality of power line inputs receives power and
a second mode in which the controller provides power factor correction of the motor and selects the power line inputs connected
to the AC-DC power supply by the sampling and switching device.

US Pat. No. 9,423,149

METHODS AND APPARATUSES TO ATTENUATE ACOUSTIC WAVES

TRANE INTERNATIONAL INC.,...

1. A muffler, comprising:
a muffler housing having an inlet and an outlet;
a first acoustic path internal to the muffler housing; and
a second acoustic path exiting from the muffler housing at a location between the inlet and the outlet,
wherein the first acoustic path and the second acoustic path are configured to provide different phase shifts to acoustic
waves, the first acoustic path directs a first portion of acoustic waves received from the inlet of the muffler housing toward
the outlet of the muffler housing, the second acoustic path receives a second portion of the acoustic waves from the muffler
housing and directs the second portion of the acoustic waves externally from the muffler housing, and the first acoustic path
and the second acoustic path direct the first and second portions of acoustic waves to merge externally from the muffler housing
after the first and second acoustic paths and after the outlet.

US Pat. No. 9,279,429

BLOWER HOUSING

Trane International Inc.,...

11. A method of moving air, comprising:
receiving fluid into a centrifugal blower; and
moving the fluid along an angular path; and
increasing the fluid flow cross-sectional area of the angular path with increasing angular magnitude prior to a discharge
opening; and

discharging the fluid through the discharge opening in an airflow direction that is substantially tangential to a polar axis
of the centrifugal blower.

US Pat. No. 9,134,038

LINEAR RESET PROVIDING ADAPTIVE RESPONSE AND CONTROL ACTION REVERSAL OF PID LOOPS

Trane International Inc.,...

1. A temperature conditioning system for simultaneously heating and cooling a current of air, the current of air provides
a coolable current of air and a heatable current of air, the current of air flowing to and passing through a comfort zone,
the temperature conditioning system comprising:
a heater connected in heat transfer relationship with the heatable current of air;
a heat regulator connected to adjust a heat output of the heater;
a cooler connected in heat transfer relationship with the coolable current of air;
a cooling regulator connected to adjust a cooling capacity of the cooler, the cooling regulator providing the cooler with
a range of capacities including a maximum cooling capacity, a minimum cooling capacity, and a predetermined intermediate cooling
capacity therebetween;

the cooler having a first cooling range between the minimum cooling capacity and the intermediate cooling capacity;
the cooler having a second cooling range between the intermediate cooling capacity and the maximum cooling capacity;
a sensor system exposed to the current of air, the sensor system providing a feedback signal representative of a thermodynamic
condition of the current of air; and

a control system connected in signal communication with the sensor system, the heat regulator and the cooling regulator; the
control system having a cooler control loop to control the cooling regulator, the control system having a heater control loop
with a heater gain to control the heat regulator, the heater gain varying as a function of the cooling capacity, the heater
gain having a greater range of variance over the second cooling range than over the first cooling range, and the heater gain
changing polarity as the cooler changes from the predetermined intermediate cooling capacity to the maximum cooling capacity.

US Pat. No. 9,115,907

VENTILATION CONTROLLER

Trane International Inc.,...

1. A ventilation system for a building that defines an outdoor area and an indoor area, comprising:
a ventilation blower configured to deliver air from at least one of (1) the indoor area and into the outdoor area and (2)
the outdoor area and into the indoor area

a controller operatively coupled to the ventilation blower to render the ventilation blower selectively operable in a normal
mode and an alternate mode, such that the controller determines the actual ventilation flow rate through the ventilation blower
as a function of the rotational speed of the ventilation blower and the power consumption of the motor of the ventilation
blower; and

a control system having an electrical output and a manual input, wherein the electrical output is operatively coupled to the
ventilation blower for urging the ventilation blower to move the ventilation air at a target ventilation flow rate, wherein
the target ventilation flow rate is based on a setup signal that is communicated to the controller via the manual input, wherein
the setup signal is based on the specified number of rooms and the specified amount of floor space.

US Pat. No. 9,494,952

SYSTEMS AND METHODS FOR CONTROLLING MULTIPLE HVAC SYSTEMS

Trane International Inc.,...

21. An HVAC control system, comprising:
a first system controller configured to control a first HVAC system and located in a first zone conditioned by the first HVAC
system; and

a second system controller configured to control a second HVAC system and located in a second zone conditioned by the second
HVAC system;

wherein the first system controller is configured to simultaneously display a zone information group for each zone conditioned
by either the first HVAC system or the second HVAC system, wherein each zone information group comprises a zone indicator,
a zone mode indicia, a current temperature associated with the respective zone, and at least one temperature set point associated
with the respective zone; and

wherein the first controller is configured to selectively receive an input to adjust the temperature set point of the first
zone and the temperature set point of the second zone to cause (1) the first HVAC system to operate in accordance with the
adjusted temperature set point of the first zone when the temperature set point of the first zone is adjusted, wherein the
adjusted first temperature set point of the first zone comprises a different value than the temperature set point of the second
zone and (2) the second HVAC to operate in accordance with the adjusted second temperature set point when the second temperature
set point of the second zone is adjusted, wherein the adjusted second temperature set point of the second zone comprises a
different value than the temperature set point of the first zone.

US Pat. No. 9,316,411

HVAC FURNACE

Trane International Inc.,...

1. A heating, ventilation, and/or air conditioning (HVAC) furnace, comprising:
an air-fuel premixer configured to mix air and a fuel;
a mixture distributing box disposed downstream from the air-fuel premixer and comprising a deflector, wherein the deflector
is disposed within the mixture distributing box such that the entirety of the air-fuel mixture mixed by the air-fuel premixer
and combusted by the HVAC furnace passes through the mixture distributing box via a fluid flow path that is defined at least
partially by a portion of the deflector and at least partially by an inner wall of the mixture distributing box;

a flat burner comprising an upstream side and a downstream side, the flat burner being configured to receive the entirety
of the air-fuel mixture therethrough from the mixture distributing box via the fluid flow path, wherein the deflector of the
mixture distributing box is configured to promote an even distribution of the air-fuel mixture over the upstream side of the
flat burner;

a first flow path located adjacent the flat burner and downstream relative to the flat burner, the first flow path configured
to receive fluid exiting the flat burner; and

a plurality of second flow paths located downstream relative to the first flow path, the plurality of second flow paths being
configured to receive fluid from the first flow path.

US Pat. No. 9,441,855

ADAPTABLE HVAC UNIT BASE

TRANE INTERNATIONAL INC.,...

1. A base of a heating, ventilation, air conditioning (HVAC) unit, comprising:
a base plate;
a supply air duct opening through the base plate;
a return air duct opening through the base plate;
at least one additional opening designated as one of another supply air opening through the base plate and another return
air duct opening through the base plate;

a seal disposed about and along a perimeter of the base plate on a top side of the base plate around the supply air duct opening
and the return air duct opening;

a seal disposed on the top side of the base plate about the supply air duct opening;
a seal disposed on the top side of the base plate about the return air duct opening;
a seal disposed on the top side of the base plate about the at least one additional opening; and
a supply side/return side seal on the top side of the base plate disposed between the supply air duct opening and the return
air duct opening,

wherein the base plate is configured to be adaptable to multiple footprints for an HVAC unit due to the arrangement of the
supply air duct opening, the return air duct opening, the at least one additional opening, and the seals,

the HVAC unit is a rooftop unit,
the top side of the base plate includes an attachment portion for the rooftop unit along the perimeter of the base plate,
and

the seal disposed about and along the perimeter of the base plate is configured to seal between the attachment portion and
the rooftop unit.

US Pat. No. 9,234,673

HEAT EXCHANGER WITH SUBCOOLING CIRCUIT

Trane International Inc.,...

1. An air handling unit, comprising:
a blower configured to selectively move air from an air inlet of the air handling unit to an air outlet of the air handling
unit along an airflow direction extending from the blower to the air outlet;

a heat exchanger comprising a first slab and a second slab, each slab comprising an upper end and a lower end and disposed
within the air handling unit between the air inlet and the air outlet such that the upper end is located nearer the air outlet
than the lower end, and each slab of the heat exchanger further comprising:

at least one thermally conductive fin;
an evaporator circuit comprising at least one evaporator tube (1) comprising an evaporator tube inlet and an evaporator tube
outlet and (2) disposed through and thermally conductively joined to the at least one thermally conductive fin at the upper
end of the heat exchanger; and

a subcooler circuit comprising;
a first subcooler tube comprising a subcooler tube inlet; and
a second subcooler tube joined to the first subcooler tube by a hairpin joint, the second subcooler tube comprising a subcooler
tube outlet, wherein each of the first subcooler tube and the second subcooler tube are disposed through and thermally conductively
joined to the at least one thermally conductive fin at the lower end of the heat exchanger;

a subcooler crossover tube that delivers refrigerant from the subcooler tube outlet of the second subcooler tube of the first
slab to the subcooler tube inlet of the first subcooler tube of the second slab;

an expansion device providing fluid communication between the evaporator tube inlet of the at least one evaporator tube of
the evaporator circuit of each of the first slab and the second slab and the subcooler tube outlet of the second subcooler
tube of the subcooler circuit of the second slab, wherein the expansion device comprises only one inlet and the inlet is connected
in fluid communication with the subcooler tube outlet of the second subcooler tube of the subcooler circuit of the second
slab; and

a drain pan disposed within the air handling unit upstream relative to the heat exchanger, wherein the first subcooler tube
and the second subcooler tube of the subcooler circuit of each of the first slab and the second slab is positioned in a geometrical
footprint of the drain pan as the drain pan is viewed from an upstream position in the primary airflow direction.

US Pat. No. 9,046,276

SYSTEMS AND METHODS FOR CONTROLLING AN HVAC MOTOR

Trane International Inc.,...

1. A heating, ventilation, and/or air conditioning (HVAC) system, comprising:
a motor configured to selectively provide an airflow;
an airflow control algorithm configured receive an input and to provide a desired control value associated with a desired
actual operation value of the motor, wherein the desired actual operation value is provided as a function of the input;

a control translator configured to receive the desired control value and to provide a correlated control value to the motor,
wherein the correlated control value is associated with causing the motor to operate at the desired control value; and

a feedback translator configured to receive a reported feedback value reported by the motor, the reported feedback value being
associated with an actual operation value of the motor, the feedback translator being further configured to send a correlated
feedback value to the airflow control algorithm, wherein an absolute value of any difference between the correlated feedback
value and the actual operation value is less than an absolute value of any difference between the reported feedback value
and the actual operation value.

US Pat. No. 9,261,290

METHODS AND SYSTEMS FOR CONTROLLING AN ENERGY RECOVERY VENTILATOR (ERV)

Trane International Inc.,...

1. A system, comprising:
a heat pump;
an energy recovery ventilator (ERV); and
a controller coupled to the heat pump and the ERV, wherein the controller selectively implements an ERV operation algorithm
that automates a ventilating operation of the ERV, wherein the ERV operation algorithm determines a cubic feet per minute
(CFM) ventilation value based on a square footage value, compares the CFM ventilation value with a total CFM capacity of the
ERV, and automates the ventilating operation of the ERV based on the comparison;

wherein the controller comprises a user interface that selectively provides an input prompt for selection between (1) operating
the controller to control the ERV according to the ERV operation algorithm and (2) operating the controller to operate the
ERV according to a user selectable percentage of a total capacity of the ERV without respect to the CFM ventilation value;

wherein the user interface comprises an air enthalpy utility that determines an air enthalpy value as a result of selectively
entering at least one of (1) a relative humidity value and a dry bulb temperature and (2) a wet bulb temperature; and

wherein the ERV operation algorithm utilizes the air enthalpy value to determine a direct duct to return ventilation load
and an ERV ventilation load to operate the ERV for at least one of (1) a calculated ERV on-time setting and (2) a manually
selected ERV on-time setting.

US Pat. No. 9,261,300

EXPANSION VALVE CONTROL SYSTEM AND METHOD FOR AIR CONDITIONING APPARATUS

Trane International Inc.,...

1. A method of controlling an electronic expansion valve (EEV) of an HVAC system, comprising:
determining a steady state EEV position as a function of indoor enthalpy and outdoor ambient temperature;
discontinuing operation of the HVAC system;
upon resuming operation of the HVAC system, operating the EEV according to a percentage of the determined steady state EEV
position;

wherein in response to operating the EEV at a higher percentage than the determined steady state EEV position, decreasing
the percentage after a predetermined time period has elapsed; and

wherein in response to operating the EEV at a lower percentage than the determined steady state EEV position, increasing the
percentage after a predetermined time period has elapsed.

US Pat. No. 9,093,942

ASSYMETRICAL POWER INVERTER

TRANE INTERNATIONAL INC.,...

1. A system comprising:
a variable frequency drive including a rectifier, a DC bus, and an inverter, the inverter including a plurality of inverter
legs; and

an electric motor operatively connected with the inverter, the motor including a main winding and an auxiliary winding, the
main winding connected with a first leg of the inverter at a first main winding node and connected with a second leg of the
inverter at a second main winding node, the auxiliary winding connected with a third leg of the inverter at a first auxiliary
winding node and connected with the second leg of the inverter at a second auxiliary winding node;

wherein the third leg of the inverter includes a plurality of switching devices and a capacitor selectably electrically connectable
with the first auxiliary winding node by switching one or more of the switching devices;

wherein the third leg of the inverter comprises a first switching device, a second switching device, a third switching device,
and a fourth switching device connected in series between a first rail of the DC bus and a second rail of the DC bus; the
capacitor is connected to a first inverter node between the first switching device and the second switching device and connected
to a second inverter node between the third switching device and the fourth switching device; and the first auxiliary winding
node is connected with the third leg of the inverter at a node intermediate the second switching device and the third switching
device.

US Pat. No. 9,459,634

HVAC SYSTEM WITH IMPROVED CONTROL SWITCHING

Trane International Inc.,...

20. A heating ventilation and/or air conditioning (HVAC) switching circuit comprising:
an HVAC direct current (DC) power relay comprising a power relay coil with a first power relay coil terminal connected to
the neutral terminal of a power source;

a capacitor connected between the neutral terminal of the power source and a negative DC supply;
a first voltage divider; and
a programmable shunt regulator configured as a level triggered switch, programmed by the second voltage divider and connected
between a fourth power relay coil terminal and the negative DC supply.

US Pat. No. 9,328,934

HVAC SYSTEM SUBCOOLER

Trane International Inc.,...

1. An air handling unit, comprising:
a refrigeration coil assembly comprising at least two plate fin slabs arranged in a V-coil arrangement; and
a subcooler assembly, comprising:
a subcooler circuit disposed between the at least two plate fin slabs of the refrigeration coil assembly and in a downstream
airflow path relative to the refrigeration coil assembly, wherein no portion of the subcooler circuit is disposed further
downstream than a most downstream end of either of the at least two slabs of the refrigeration coil assembly;

a refrigerant expansion device configured to reduce a pressure of refrigerant received via an output of the subcooler circuit;
and

a distributor configured to receive refrigerant from an output of the refrigerant expansion device and feed the refrigerant
through a plurality of distributor tubes to a plurality of circuits disposed in each of the at least two plate fin slabs of
the refrigeration coil assembly;

wherein the entirety of the subcooler assembly is disposed between the at least two plate fin slabs of the refrigeration coil
assembly and in a downstream airflow path relative to the refrigeration coil assembly.

US Pat. No. 9,328,939

AIR HANDLING UNIT WITH MIXED-FLOW BLOWER

Trane International Inc.,...

1. An air handling unit, comprising: a cabinet forming a duct having a primary airflow direction that extends through the
duct in a substantially straight line path from an inlet disposed in a lower wall of the cabinet to an outlet disposed in
an opposing upper wall of the cabinet; a mixed-flow blower assembly configured to provide airflow through the duct, wherein
an upstream end of a motor of the mixed-flow blower assembly is located downstream relative to a downstream end of a blade
assembly of the mixed-flow blower assembly, and wherein an axis of rotation of the mixed-flow blower assembly is substantially
parallel to the primary airflow direction; and a refrigeration coil assembly disposed within the cabinet and downstream of
the mixed- flow blower assembly, wherein the refrigeration coil assembly is a V-coil, and wherein a vertex of the V-coil is
located substantially upstream of other portions of the V-coil; wherein a downstream boundary of a blower pressure zone is
at least partially defined by an upstream boundary of the refrigeration coil assembly; wherein the blower pressure zone is
further defined by the lower wall comprising the inlet through which the mixed-flow blower assembly draws air into the blower
pressure zone; wherein the mixed-flow blower assembly is carried by the lower wall; wherein the motor and a substantial portion
of the mixed-flow blower assembly are located within the blower pressure zone; wherein the blower pressure zone is free of
any blade shroud configured to obstruct expulsion of air from the mixed-flow blower assembly in a substantially radial direction
relative to an axis of rotation of the mixed-flow blower assembly; and wherein the mixed-flow blower is configured to expel
air only in directions that are not straight paths toward the refrigeration coil assembly.

US Pat. No. 9,279,620

SYSTEM AND METHOD FOR HVAC CONDENSATE MANAGEMENT

Trane International Inc.,...

1. A method of managing HVAC condensate, comprising:
providing a cabinet configured as a duct;
providing a coil assembly having a first slab and a second slab configured in a V-shaped coil arrangement within the cabinet;
substantially segregating a low pressure zone associated with a primary airflow through the cabinet from at least one high
pressure zone;

disposing a slab cap over an upper end of each of the first slab and the second slab, each slab cap comprising at least one
undulating disturber disposed near an upper portion of each of the first slab and the second slab within the low pressure
zone;

disturbing the primary airflow with the undulating disturbers to locally reduce a velocity of the airflow to reduce an amount
of condensation being transported through reduced velocity regions; and

providing an air leakage path between the low pressure zone and the high pressure zone to allow airflow to transfer from the
high pressure zone to the low pressure zone to reduce an amount of condensation leaking from the low pressure zone to the
high pressure zone.

US Pat. No. 9,243,947

DRAIN PAN LEVEL MONITORING SYSTEM

Trane International Inc.,...

1. A drain pan level monitoring system of an air conditioning system, comprising:
a level sensor that generates (1) a first level sensor output signal related to a first positive value rate of condensation
buildup within a drain pan and (2) a second level sensor output signal related to a second positive value rate of condensation
buildup within the drain pan, wherein the level sensor is configured to generate the first level sensor output signal prior
to generating the second level sensor output signal; and

an alert device configured to indicate that there may be a buildup of debris in the drain pan if a value of the second positive
value rate is greater than a value of the first positive value rate by a predetermined amount.

US Pat. No. 9,647,591

MAGNET DEGRADATION AND DAMAGE CONTROLS AND DIAGNOSTICS FOR PERMANENT MAGNET MOTORS

Trane International Inc.,...

1. A method comprising:
operating a system comprising a permanent magnet motor and a variable frequency drive, the permanent magnet motor comprising
a stator including a plurality of windings electrically coupled to terminals and a rotor including a plurality of permanent
magnets, the variable frequency drive including a plurality of outputs electrically coupled with the terminals;

determining magnetic flux information based upon information indicative of a motor current, information indicative of a terminal
voltage, information indicative of a motor inductance, and information indicative of a motor resistance;

identifying a collective flux error condition associated with the plurality of permanent magnets collectively based upon the
flux information; and

identifying a localized flux error condition based upon the flux information associated with a subset of the plurality of
permanent magnets including at least one of the magnets.

US Pat. No. 9,398,490

METHOD OF FRAGMENTING A MESSAGE IN A NETWORK

TRANE INTERNATIONAL INC.,...

13. A method of sending a message in a packet-based network, comprising:
determining an available space in a first packet;
determining a fragmented message size for fragmenting the message, wherein the fragmented message size is at least 4 bytes
smaller than the available space and the at least 4 bytes corresponds to two additional nodes in the packet-based network;

fragmenting the message into at least one numbered fragmented message, each of the at least one numbered fragmented message
has the fragmented message size;

assembling a first fragmented message into the first packet;
sending the first packet over the network;
receiving the first packet sent over the network;
performing source routing in the network with respect to the received packet;
updating the network header of the first packet to obtain a later packet; and
sending the later packet over the network,
wherein the first packet includes a free space, and at least a portion of the free space is occupied in the later packet.

US Pat. No. 9,353,765

CENTRIFUGAL COMPRESSOR ASSEMBLY AND METHOD

TRANE INTERNATIONAL INC.,...

1. An inlet flow conditioning assembly for use in a centrifugal compressor to control aerodynamic blockage, distribution,
and swirl of a refrigerant, comprising:
a. an inlet flow conditioning housing positioned within the compressor the inlet flow conditioning housing upstream of an
impeller housed in the compressor; said impeller having impeller blades with leading edges; the inlet flow conditioning housing
forming a flow conditioning channel axially extending from a channel inlet to a channel outlet;

b. a flow conditioning body having a first body end with a first body end radius, an intermediate portion with a body radius
and a second body end with a second body end radius; said flow conditioning body being substantially centrally positioned
along a length of the flow conditioning channel; the flow conditioning body is arranged coincident to a flow conditioning
nose at the first body end and coincident to the impeller hub of the impeller at the second body end, said flow conditioning
body having a streamline curvature where the body radius relative to an axis of rotation of the impeller that exceeds a radius
of the impeller hub and where the first body end radius and second body radius are less than the body radius;

c. a plurality of inlet guide vanes positioned between said channel inlet and channel outlet; said plurality of inlet guide
vanes being rotatably mounted on a support shaft at a location along the flow conditioning body where the body radius relative
to the axis of rotation of the impeller exceeds the radius of the impeller hub; and

d. a strut including a first strut end and a second strut end, the first strut end being attached at the flow conditioning
nose and the second strut end being attached to the inlet flow conditioning housing, and the strut designed to have a substantially
s-shape in a plane substantially parallel to the channel inlet,

wherein the flow conditioning body, the flow conditioning nose and the plurality of inlet guide vanes are axially spaced along
and relative to the flow conditioning channel to condition the refrigerant in the flow conditioning channel such that leading
edges of the plurality of inlet guide vanes, in a fully open position, are aligned with a primarily axial flow distribution
of the refrigerant in the fluid conditioning channel at and upstream of the plurality of inlet guide vanes and the plurality
of inlet guide vanes, in a fully open position, impart on the primarily axial flow distribution of refrigerant, from the leading
edges of the plurality of inlet guide vanes to trailing edges of the plurality of inlet guide vanes, a non-zero target swirl
distribution, in a range between about 0 degrees to about 20 degrees, on the refrigerant flowing into leading edges of the
impeller blades.

US Pat. No. 9,163,843

WEAR-LEVELING FOR COMPONENTS OF AN AUXILIARY HEAT SOURCE

Trane International Inc.,...

1. An air handler, comprising:
an auxiliary heat source having a plurality of heat element relays, wherein each heat element relay is associated with at
least one heat element; and

a controller configured to:
receive a heat request from a thermostat;
access wear-tracking information for each of the plurality of heat element relays, wherein the wear-tracking information comprises
the number of auxiliary heat cycles for which each of the plurality of heat element relays has been energized;

generate a control signal to energize a first heat element relay of the plurality of heat element relays that comprises the
lowest number of auxiliary heat cycles for which the first heat element has been energized; and

determine whether a heat element fault exists, wherein in response to determining that a heat element fault exists, generating,
by the controller, a control signal to energize a next heat element relay of the plurality of heat element relays that comprises
the next lowest number of auxiliary heat cycles for which the next heat element relay has been energized.

US Pat. No. 9,395,106

SYSTEM AND METHOD FOR COOLING POWER ELECTRONICS USING HEAT SINKS

TRANE INTERNATIONAL INC.,...

1. A heat pump comprising:
a main refrigerant circuit including
a compressor configured to compress a refrigerant,
an indoor heat exchanger,
an outdoor heat exchanger,
a biflow expansion valve configured to receive condensed liquid refrigerant and to expand the refrigerant, and
a reversing valve movable between a first position that directs refrigerant from the compressor sequentially to the outdoor
heat exchanger, the biflow expansion valve, and the indoor heat exchanger in a cooling mode, and a second position that directs
compressed refrigerant from the compressor sequentially to the indoor heat exchanger, the biflow expansion valve, and the
outdoor heat exchanger in a heating mode; and

a cooling circuit in fluid communication with the main refrigerant circuit, the cooling circuit including
a cooling line having a first end and a second end, the first end is at a first branch point on the main refrigerant circuit,
the first branch point is between the indoor heat exchanger and the biflow expansion valve, the second end is at a second
branch point on the main refrigerant circuit, the second branch point is between the outdoor heat exchanger and the biflow
expansion valve,

the cooling line further includes a first leg fluidly connected with the first branch point, and a second leg fluidly connected
with the second branch point,

a first expansion device on the first leg,
a second expansion device on the second leg,
a heat sink fluidly connected with the first leg and the second leg,
the first expansion device, in a heating mode, receives a portion of condensed liquid refrigerant from the main refrigerant
circuit, the first expansion device including a first orifice check valve having a first orifice, the first orifice check
valve is disposed between the heat sink and the first branch point, the first orifice expands the portion of condensed refrigerant
in the heating mode,

the second expansion device, in a cooling mode, receives a portion of condensed refrigerant from the main refrigerant circuit,
the second expansion device including a second orifice check valve having a second orifice, the second orifice check valve
is disposed between the heat sink and the second branch point, the second orifice expands the portion of condensed refrigerant
in the cooling mode,

the heat sink receives the expanded portion of refrigerant from the first or second expansion device, respectively in the
heating or cooling mode, and

power electronics coupled to the heat sink, the portion of expanded refrigerant passing through the heat sink and cooling
the power electronics.

US Pat. No. 9,391,497

ELECTRIC MOTORS HAVING MODULAR CONSTRUCTION, POWER SHARING AND PERFORMANCE CONFIGURABILITY

TRANE INTERNATIONAL INC.,...

1. A kit comprising:
a plurality of motor core and driver modules including at least two motor core and driver modules with different electrical
characteristics;

a plurality of motor power supply modules including at least two motor power supply modules with different electrical characteristics;
and

a plurality of external interface modules including at least two external interface modules with different electrical characteristics;
wherein the motor core and driver modules, the motor power supply modules, and the external interface modules are structured
to be selectably coupleable and decoupleable with one another to provide a plurality of different assemblies that are structurally
and electrically separate from one another, each of the plurality of different assemblies comprising a common set of electrical
interconnections including a first electrical interconnection between the power supply module and the motor core and driver
module of each assembly, a second electrical interconnection between the external interface module and the motor core and
driver module of each assembly, and a third electrical interconnection between the power supply module and the external interface
module of each assembly, wherein the voltage of the first electrical interconnection is greater than the voltage of the second
electrical interconnection.

US Pat. No. 9,261,108

HVAC BLOWER IMPELLER

Trane International Inc.,...

1. An air handling unit, comprising:
an impeller comprising an impeller axis;
a first blade support;
a second blade support;
a third blade support;
a plurality of first blades extending between the first blade support and the second blade support; and
a plurality of second blades extending between the second blade support and the third blade support;
wherein an angular location of attachment of the first blades to the first blade support is angularly offset from an angular
location of attachment of the first blades to the second blade support in a first angular direction, wherein an angular location
of attachment of the second blades to the third blade support is angularly offset from an angular location of attachment of
the second blades to the second blade support in the first angular direction, and wherein the second blade support is configured
to allow airflow longitudinally through an interior space of the impeller.

US Pat. No. 9,176,193

METHOD FOR MONITORING A PERMANENT MAGNET MOTOR

Trane International Inc.,...

1. A method for monitoring a permanent magnet motor, wherein the permanent magnet motor includes a stator having a plurality
of coils that share a common node; a first electrical lead, a second electrical lead, and a third electrical lead, all of
which are wired to the plurality of coils and are adapted for connection to a polyphase power source; a rotor having a plurality
of permanent magnets providing a plurality of magnetic fields; and a rotatable shaft supporting the rotor within the stator;
the method comprising:
wiring a first resistor, a second resistor, and a third resistor respectively to the first electrical lead, the second electrical
lead, and the third electrical lead, wherein the first resistor, the second resistor and the third resistor share a reference
node;

energizing the permanent magnet motor via the polyphase power source;
sensing a differential electrical signal between the reference node and the common node;
detecting an imbalance of the plurality of magnetic fields based on the differential electrical signal; and
defining an acceptable range of the differential electrical signal, wherein the differential electrical signal being beyond
the acceptable range indicates that the plurality of magnetic fields are appreciably imbalanced.

US Pat. No. 9,506,666

SYSTEM AND METHOD FOR MONITORING HVAC SYSTEM OPERATION

Trane International Inc.,...

1. A comfort controller in an HVAC system, the comfort controller comprising:
a processor configured to:
receive actual run time length information from a sensor installed in the HVAC system;
compare (1) a frequency of actual run time lengths of the HVAC system to a frequency of corresponding benchmark run time lengths
and (2) an actual static pressure of the HVAC system to a benchmark static pressure;

determine that the HVAC system has an improper configuration when at least one of the frequency of actual run time lengths
and the actual static pressure are outside a specified range of their associated benchmarks;

calculate an amount of excessive electricity used during the actual run time lengths compared to an amount of electricity
expected to be used during the corresponding benchmark run time lengths when the frequency of actual run time lengths is greater
than the frequency of corresponding benchmark run time lengths;

calculate a cost of using the excessive electricity using the calculated amount of excessive electricity and a known cost
of electricity; and

display in a report card the results of the comparison and at least one of the amount of excessive electricity and the cost
of using the excessive electricity on at least one of the comfort controller and a device in a network to which the comfort
controller is connected.

US Pat. No. 9,423,159

BI-DIRECTIONAL CASCADE HEAT PUMP SYSTEM

TRANE INTERNATIONAL INC.,...

1. A heat pump system operable with a refrigerant and a secondary fluid, the heat pump system comprising:
a first chiller comprising a first compressor and a first heat exchanger, wherein the first heat exchanger places the refrigerant
in heat transfer relationship with the secondary fluid;

a fluid circulation pump;
a fluid circulation loop connecting the fluid circulation pump in circulating fluid communication with the first heat exchanger;
a second chiller comprising a second compressor and a second heat exchanger, the first heat exchanger is an evaporator or
a condenser and the second heat exchanger is a condenser or an evaporator, the second heat exchanger being connected to the
fluid circulation loop such that the secondary fluid flows sequentially through the first heat exchanger and the second heat
exchanger;

a loop segment within the fluid circulation loop, the loop segment includes an upstream loop point and a downstream loop point,
wherein upstream and downstream are in reference to the secondary fluid flowing through the loop segment;

a geothermal fluid source coupled to the loop segment; and
a secondary fluid pump connected to force the secondary fluid between the geothermal fluid source and the loop segment such
that the secondary fluid flowing from the geothermal fluid source enters the loop segment at the downstream loop point, and
the secondary fluid flowing to the geothermal fluid source exits the loop segment at the upstream loop point; wherein the
secondary fluid flows through the secondary fluid pump at a first flow rate while flowing through the first heat exchanger
at a second flow rate, wherein the second flow rate is greater than the first flow rate, and

wherein the fluid circulation pump is disposed between the downstream loop point and the first heat exchanger and the secondary
fluid pump is disposed between the geothermal fluid source and the downstream loop point.

US Pat. No. 9,395,125

WATER TEMPERATURE SENSOR IN A BRAZED PLATE HEAT EXCHANGER

TRANE INTERNATIONAL INC.,...

1. A brazed plate heat exchanger for an air conditioner system or a heat pump system defining a water inlet, a water outlet,
a refrigerant inlet, and a refrigerant outlet, wherein in use, a current of water flows from the water inlet to the water
outlet and a refrigerant is conveyed from the refrigerant inlet to the refrigerant outlet, the refrigerant being in a heat
transfer relationship with the current of water; the brazed plate heat exchanger comprising:
a plurality of corrugated plates being stacked to define a plurality of refrigerant passages that place the refrigerant inlet
in fluid communication with the refrigerant outlet, the plurality of corrugated plates being stacked to further define a plurality
of upstream water passages, a plurality of downstream water passages, and a plurality of intermediate water passages; with
respect to water flow, the plurality of upstream water passages are downstream of the water inlet, the plurality of intermediate
water passages are downstream of the plurality of upstream water passages, the plurality of downstream water passages are
downstream of the plurality of intermediate water passages, and the water outlet is downstream of the plurality of downstream
water passages; when in use, the current of water at the water inlet is warmer than the current of water at the water outlet,
and the current of water at the water outlet is warmer than at least some of the current of water flowing through the plurality
of intermediate water passages;

a probe comprising a temperature sensor and a pair of wires connected to the temperature sensor, the temperature sensor being
at a tip of the probe, the temperature sensor extending into at least one intermediate water passage of the plurality of intermediate
water passages; and

a target point within the plurality of intermediate water passages, the temperature sensor being positioned at the target
point; and such that when in use, the water at the target point is colder at the target point than at the water inlet, at
the plurality of upstream water passages, at the plurality of downstream water passages, and at the water outlet, and the
target point has a lower flow rate of water than the water inlet, the plurality of upstream water passages, the plurality
of downstream passages, and the water outlet.

US Pat. No. 9,258,201

ACTIVE DEVICE MANAGEMENT FOR USE IN A BUILDING AUTOMATION SYSTEM

Trane International Inc.,...

1. A computer-implemented method for managing the connection status of a plurality of end devices in a building automation
system (BAS) comprising:
providing a server engine communicatively coupled to the plurality of end devices by a network, the server engine including
a connection manager;

transmitting, by the connection manager, a first verify message to a one of the plurality of end devices via the network and
incrementing a message count of the number of verify messages sent;

waiting, by the connection manager, for a response to the verify message for a predefined wait-time period proportional to
an amount of time the end device has been off-line, wherein the predefined wait-time period is defined by a decay algorithm
including a plurality of states, at least some of the plurality of states each corresponding to a predefined range of time
for which an end device is off-line;

incrementing, by the connection manager, the wait-time period if no response to the verify message is received, checking if
the message count has reached a maximum message value, transmitting another verify message if the maximum message value has
not been reached;

setting, by the connection manager, the wait-time period to a preconfigured minimum-time and clearing the message count if
an affirmative response to the verify message is received; and

discontinuing, by the connection manager, the transmission of verify messages to the one of the plurality of end devices if
the message count has reached the maximum message value.

US Pat. No. 9,863,681

EXPANSION VALVE CONTROL SYSTEM AND METHOD FOR AIR CONDITIONING APPARATUS

Trane International Inc.,...

1. A heating, ventilation, and air conditioning (HVAC) system, comprising:
an electronic expansion valve (EEV); and
a controller configured to:
determine a steady state EEV position as a function of a selected startup operating capacity of the HVAC system, an indoor
enthalpy, and an outdoor temperature; and

control the position of the EEV as a function of the indoor enthalpy and the outdoor temperature;
wherein the controller is configured to operate the EEV according to a percentage of the determined steady state EEV position
upon resuming operation of the HVAC system after operation of the HVAC system was discontinued;

wherein the controller is configured to decrease the percentage after a predetermined time period has elapsed in response
to operating the EEV at a higher percentage than the determined steady state EEV position; and

wherein the controller is configured to increase the percentage after a predetermined time period has elapsed in response
to operating the EEV at a lower percentage than the determined steady state EEV position.

US Pat. No. 9,354,774

MOBILE DEVICE WITH GRAPHICAL USER INTERFACE FOR INTERACTING WITH A BUILDING AUTOMATION SYSTEM

TRANE INTERNATIONAL INC.,...

1. A mobile device for remote operation of a building automation system, comprising:
a processor in communication with a memory, a network interface, a touchscreen, and an accelerometer that detects an orientation
with respect to a gravitational center and communicates the orientation to the processor,

the processor executing instructions read from the memory for a graphical user interface and displaying the graphical user
interface on the touchscreen,

the graphical user interface includes a portrait mode and a landscape mode, wherein the graphical user interface is displayed
on the touchscreen in the portrait mode or the landscape mode based on the orientation, wherein the portrait mode and the
landscape mode are switchable by toggling a position of the mobile device,

each of the portrait mode and the landscape mode of the graphical user interface includes a screen and a navigation bar,
the navigation bar includes a plurality of icons, each of the icons is associated with an interactive screen, wherein a selection
of one of the icons by touching the touchscreen is detectable by the processor to display in the screen the interactive screen
associated with the one of the icons, and

the graphical user interface is configured to receive operational instructions via the touchscreen, relay the operational
instructions to the processor, the processor is configured to send the operational instructions to the building automation
system via a transmission from the network interface,

the network interface receives operation schedule data from the building automation system in real time, and the processor
displays in the interactive screen the operation schedule data as an interactive graphic,

wherein the interactive screen includes a portrait interactive screen and a landscape interactive screen,
the processor displays in the screen the landscape interactive screen when the graphical user interface is in the landscape
mode, the landscape interactive screen displayed includes an itemized operation schedule data of the building automation system,
wherein the itemized operation schedule data displayed includes displaying separately a scheduled operation setting and one
or more exception settings which can alter the scheduled operation setting,

the processor displays in the screen the portrait interactive screen when the graphical user interface is in the portrait
mode, the portrait interactive screen displayed includes a net operation schedule data that is a sum of the scheduled operation
setting and the one or more exception settings of the itemized operation schedule data of the building automation system,
and the portrait interactive screen displayed does not include displaying separately the scheduled operation setting and the
one or more exception settings of the itemized operation schedule data of the building automation system.

US Pat. No. 9,841,210

SOUND LEVEL CONTROL IN AN HVAC SYSTEM

TRANE INTERNATIONAL INC.,...

1. A method of controlling a refrigeration unit for a heating, ventilation, and air conditioning (HVAC) system, comprising:
determining, by a controller, a cooling requirement of a conditioned space;
determining, by the controller, a sound level operating range for the refrigeration unit; and
applying a cooling setting based on the cooling requirement and the sound level operating range, wherein the sound level operating
range constrains the cooling setting such that when the cooling setting includes one or more settings outside the sound level
operating range, the cooling setting is modified to be within the sound level operating range.

US Pat. No. 9,556,372

REFRIGERANT COMPOSITIONS

TRANE INTERNATIONAL INC.,...

1. A refrigerant composition comprising:
an amount of a R125 refrigerant;
an amount of a R32 refrigerant; and
an amount of a R1234yf refrigerant,
the R32 refrigerant has higher flammability than the R125 refrigerant, and the R1234yf refrigerant has higher flammability
than the R125 refrigerant,

wherein the amount of R32 refrigerant is 74.0% wt, the amount of R125 refrigerant is 5.5% wt, and the amount of R1234yf refrigerant
is 20.5% wt.

US Pat. No. 9,810,460

REVERSIBLE FLOW ELECTRIC EXPANSION VALVE

Trane International Inc.,...

13. A method of operating a heat pump HVAC system, comprising:
providing an electronically controlled expansion valve comprising a motor, an obturator movable by the motor, a removable
seat movable by the motor, a complementary portion for selectively receiving the removable seat, and

a retraction rod extending from the obturator and through at least a portion of the removable seat, the retraction rod being
slidably received through a retraction hole of the removable seat, and the removable seat being captured along the retraction
rod between the obturator and a seat catch of the retraction rod, wherein the removable seat is selectively removable from
the complementary portion in response to operation of the motor; and

locating the obturator relative to the removable seat to selectively allow operation of the electronically controlled expansion
valve in at least one of a closed state with substantially no fluid flow through the valve, a metered state with fluid flow
through the valve in a first direction, and an unmetered state with fluid flow through the valve in a first direction.

US Pat. No. 9,765,784

OLDHAM COUPLING WITH ENHANCED KEY SURFACE IN A SCROLL COMPRESSOR

TRANE INTERNATIONAL INC.,...

1. A scroll compressor, comprising:
a compressor housing;
a first stage of compression disposed within the compressor housing, the first stage comprising:
a first, stationary, scroll member comprising a base and a substantially spiral wrap extending from the base of the first,
stationary, scroll member; and

a second, orbiting, scroll member comprising a substantially circular base and a substantially spiral wrap extending from
the base of the second, orbiting scroll member; and

a first Oldham coupling disposed on the second scroll member base, wherein the first Oldham coupling comprises a ring member
comprising one or more coupling keys, and further wherein each first Oldham coupling key comprises a loaded side face that
is recessed into the ring member of the first Oldham coupling to form a recessed portion of the first Oldham coupling ring
member, the recessed portion extending along the loaded side face,

wherein the second, orbiting, scroll member further comprises a protruding portion extending toward the first Oldham coupling
and configured to mesh with the recessed portion of the first Oldham coupling ring member.

US Pat. No. 9,601,919

TIME DELAY WITH CONTROL VOLTAGE SENSING

Trane International Inc.,...

1. A heating, ventilating, and air conditioning (HVAC) system, comprising:
a power source operable to supply an alternating current (AC) line voltage for operating a motor;
a transformer electrically coupled to the power source and operable to convert the AC line voltage to an AC control voltage
used to selectively energize at least one switching element, the switching element electrically connecting the motor to the
AC line voltage when the switching element is energized;

at least one sensor operable to monitor the AC control voltage supplied from the transformer; and
a controller operatively connected to the sensor and operable to control the AC line voltage supplied to the motor via the
switching element in accordance with the AC control voltage supplied from the transformer;

wherein the controller is configured to initiate a time delay in response to the sensor detecting a reduction in the AC control
voltage below a predetermined threshold and/or by a predetermined percentage;

wherein the controller is configured to transmit a command to de-energize the switching element in order to discontinue operation
of the motor at the expiration of the time delay in response to the sensor not detecting a predetermined increase in the AC
control voltage before the time delay expires; and

wherein, after expiration of the time delay and discontinuing operation of the motor, the controller is configured to initiate
a randomly generated time delay and transmit a command to re-energize the switching element in order to restart operation
of the motor at the expiration of the randomly generated time delay in response to the sensor detecting a predetermined minimum
AC control voltage that exceeds a minimum startup voltage for a predetermined time duration.

US Pat. No. 9,810,469

VARIABLE FAN SPEED CONTROL IN HVAC SYSTEMS AND METHODS

TRANE INTERNATIONAL INC.,...

1. A method of controlling condenser fans in a heating, ventilation, and air conditioning (HVAC) system, comprising:
detecting, with a device to detect ambient air temperature, ambient air temperature;
obtaining, with a device to obtain compressor present load, a present load on a variable speed compressor;
determining, with a controller, a target differential pressure between a condenser and an evaporator based on the ambient
air temperature detected and the present load on the variable speed compressor obtained;

outputting, with the controller, a condenser fan speed suitable to achieve the target differential pressure determined; and
controlling one or more fans based on the output of condenser fan speed to obtain a fan capacity suitable to control one or
more condenser fans, such that power of the HVAC system is managed through a power consumed by the variable speed compressor
and the fans.

US Pat. No. 9,689,585

METHOD OF ADAPTIVE CONTROL OF A BYPASS DAMPER IN A ZONED HVAC SYSTEM

Trane International Inc.,...

1. An HVAC system, comprising:
an HVAC unit including a climate control system configured to control the properties of a flow of air passing through the
HVAC unit and an air mover adapted to create a pressure differential between an inlet and an outlet of the HVAC unit;

a supply air duct in fluid communication with the outlet of the HVAC unit;
a return air duct in fluid communication with the inlet of the HVAC unit;
a plurality of zones positioned between the supply air duct and the return air duct, wherein each zone includes a climate
controlled space;

a bypass duct extending between the supply air duct and the return air duct, wherein the bypass duct includes an active bypass
damper having an open position, a closed position, and a plurality of partially opened positions;

a pressure differential sensor configured to measure the pressure differential across the bypass damper; and
a control device configured to determine the actual flow rate of the conditioned air flowing through the bypass damper in
response to measuring the pressure differential across the bypass damper, calculate a recirculation ratio equal to the ratio
of the actual flow rate of the conditioned air flowing through the bypass damper to a nominal flow rate of conditioned air
generated by the HVAC unit, compare the calculated recirculation ratio to a bypass air flow threshold, and at least one of
(1) adjust the position of the bypass damper in response to determining that the calculated recirculation ratio exceeds the
bypass air flow threshold and (2) maintain the position of the bypass damper in response to determining that the calculated
recirculation ratio does not exceed the bypass air flow threshold.

US Pat. No. 9,654,048

VARIABLE FREQUENCY DRIVE SELF-CHECK

Trane International Inc.,...

1. A method, comprising:
providing a variable frequency drive including a DC bus configured to provide a positive DC voltage and a negative DC voltage
to an inverter, wherein the inverter includes one or more pairs of transistors, wherein an upper transistor of the one or
more pairs of transistors is configured to receive the positive DC voltage and a lower transistor of the one or more pairs
of transistors is configured to receive the negative DC voltage; and

before operating the variable frequency drive to drive a motor, operating a controller operatively coupled with the variable
frequency drive to complete a set of pre-operation tests, the set of pre-operation tests performed by the controller comprising:

testing for a short circuit condition of one or more of the transistors including switching the transistors off, measuring
a voltage at a node in electrical communication with an output of one or more of the transistors, and evaluating the voltage
relative to a first expected value,

testing for an open circuit condition of one or more of the transistors including switching the transistors off, switching
on one of the transistors, measuring a voltage at a node in electrical communication with an output of the transistor switched
on, and evaluating the voltage relative to a second expected value, and

testing for a sensor error condition of one or more current sensors including switching on an upper transistor coupled to
a first node and switching on a lower transistor coupled to a second node, measuring a first current at the first node and
a second current at the second node, and evaluating the first current and the second current relative to one another.

US Pat. No. 9,476,656

HEAT EXCHANGER HAVING U-SHAPED TUBE ARRANGEMENT AND STAGGERED BENT ARRAY FOR ENHANCED AIRFLOW

TRANE INTERNATIONAL INC.,...

1. A heat exchanger, comprising:
an arrangement of heat exchange tubes including
a first heat exchange tube;
a second heat exchange tube; and
a fluid flow gap configured from an arrangement of the first heat exchange tube and the second heat exchange tube,
the first heat exchange tube comprises: a first leg, a second leg, a bend portion connected to the first leg and the second
leg, and a flow passage through the first leg, the bend portion, and the second leg,

the bend portion disposed between the first leg and the second leg,
the first and second legs are generally parallel to each other due to the connection with the bend portion, the bend portion
is disposed at one end of the first heat exchange tube, and the first and second legs have free ends disposed at an end opposite
the bend portion,

the flow passage suitable to pass a first portion of a first fluid inside the first heat exchange tube to establish a heat
exchange relationship with a second fluid passing over and outside the first heat exchange tube,

the bend portion includes a first bend that connects the first leg to the bend portion and a second bend that connects the
bend portion to the second leg, the first and second bends create a fluid flow opening proximate the bend portion suitable
to promote fluid flow through the fluid flow opening of the first heat exchange tube and to pass outside the first heat exchange
tube,

the second heat exchange tube respectively comprises: a first leg, a second leg, a bend portion connected to the first leg
and the second leg, and a flow passage through the first leg, the bend portion, and the second leg,

the bend portion disposed between the first leg and the second leg,
the first and second legs are generally parallel to each other due to the connection with the bend portion, the bend portion
is disposed at one end of the second heat exchange tube, and the first and second legs have free ends disposed at an end opposite
the bend portion,

the flow passage suitable to pass a second portion of the first fluid inside the second heat exchange tube to establish a
heat exchange relationship with the second fluid passing over and outside the second heat exchange tube,

the bend portion includes a first bend that connects the first leg to the bend portion and a second bend that connects the
bend portion to the second leg, the first and second bends create a fluid flow opening proximate the bend portion suitable
to promote fluid flow through the fluid flow opening of the second heat exchange tube and to pass outside the second heat
exchange tube,

the fluid flow gap formed by a portion of the bend portion of the first heat exchange tube extending beyond a portion of the
bend portion of the second heat exchange tube,

wherein the fluid flow gap is defined by the fluid flow openings of the first heat exchange tube and the second heat exchange
tube being at least partially exposed, and

wherein in one of the first heat exchange tube or the second heat exchange tube, the first bend includes an inner angle that
is acute relative to an inner angle of the second bend, and the second bend includes an inner angle that is obtuse relative
to the inner angle of the first bend, and wherein in the other of the first heat exchange tube or the second heat exchange
tube, the first bend includes an inner angle that is obtuse relative to an inner angle of the second bend, and the second
bend includes an inner angle that is acute relative to the inner angle of the first bend,

wherein one of the first leg and the second leg of each of the first heat exchange tube and of the second heat exchange tube
is oriented relatively above the other of the first leg and the second leg of each of the first heat exchange tube and the
second heat exchange tube, and has at least one of an internal surface and an external surface that are suitable to promote
turbulence of fluid flowing through the flow passage.

US Pat. No. 9,228,757

HEATER INTERLOCK CONTROL FOR AIR CONDITIONING SYSTEM

Trane International Inc.,...

1. A method for operating an air conditioning apparatus, said apparatus including a cabinet, an air blower including an electric
blower motor for propelling air from an air inlet to an air outlet of said cabinet, and at least one electric heating element
disposed in an air flowstream propelled by said blower through said cabinet, said apparatus further comprising a first temperature
sensor for sensing the temperature of an enclosed space being supplied with conditioned air by said apparatus and a control
system including a system controller operably connected to said first temperature sensor and to a second temperature sensor
for sensing the temperature of air being discharged from said apparatus, said control system further including a heater interlock
operable to prevent energization of said heating element and at least one heater relay in communication with said heater interlock,
said method including the steps of:
receiving by the system controller a status signal indicating the electric blower motor is operatively running above or below
a maximum or a minimum speed, respectively;

communicating by the system controller a shutoff signal instructing the heater interlock to prevent electrical power from
being supplied to the at least one electrical heating element in response to the system controller receiving the status signal
indicating the electric blower motor is operatively running above or below the maximum or the minimum speed, respectively;

receiving by the system controller a status signal indicating at least one of (1) the air discharge temperature measured by
the second temperature sensor exceeds a predetermined value and (2) a rate of change in the air discharge temperature measured
by the second temperature sensor exceeds a predetermined value; and

communicating by the system controller a shutoff signal instructing one of the heater interlock and the at least one heater
relay to prevent electrical power from being supplied to the at least one electrical heating element in response to the system
controller receiving the status signal indicating at least one of (1) the air discharge temperature exceeds the predetermined
value and (2) the rate of change in the air discharge temperature exceeds the predetermined value.

US Pat. No. 9,732,755

ORBITING CRANKSHAFT DRIVE PIN AND ASSOCIATED DRIVE PIN SLEEVE GEOMETRY

TRANE INTERNATIONAL INC.,...

7. A compressor crankshaft assembly comprising:
a crankshaft;
a cylindrical orbital bearing;
a cylindrical main bearing; and
an eccentric drive pin extending from one end of the crankshaft, wherein a shape of the drive pin viewed into an end of the
drive pin is defined by a common portion formed by a first cylinder overlapping with a second cylinder, the common portion
includes a first arcuate portion which is defined by a radius of the first cylinder and a second arcuate portion which is
defined by a radius of the second cylinder, the radius of the second cylinder is greater than the radius of the first cylinder,
a cross section of the common portion is asymmetrical relative to a horizontal central axis of the first cylinder and is asymmetrical
relative to a horizontal central axis of the second cylinder, and the first cylinder is coaxial with the cylindrical orbital
bearing, and the second cylinder is coaxial with the cylindrical main bearing.

US Pat. No. 9,635,602

DEVICE AND METHOD FOR SETTING NETWORK AND CHANNEL INFORMATION IN A NETWORK DEVICE

TRANE INTERNATIONAL INC.,...

1. A method for storing network information to an Extended PAN Identification (EPID) data of a network beacon, the method
comprising:
prior to powering up a computer readable memory, presetting a unique network identifier for a network by using a hardware
component that is connected to the computer readable memory; and

upon powering up the computer readable memory, storing to the computer readable memory the EPID data, wherein the EPID data
includes the unique network identifier, and a channel identifier for the network.

US Pat. No. 9,574,606

THRUST BEARING FOR HVAC COMPRESSOR

TRANE INTERNATIONAL INC.,...

1. An insert for a hydrodynamic thrust bearing, comprising:
a ring-like body having a crankshaft contacting surface; and
at least one structural configuration on the crankshaft contacting surface, the structural configuration including a lubricant
receiving region, a first transitional region having a sloped ramp with a height increasing from the lubricant receiving region
to a flat region, and a second transitional region next to the flat region and having a sloped ramp with a height decreasing
from the flat region, sequentially arranged along the crankshaft contacting surface;

wherein the lubricant receiving region includes a groove configured to receive and direct lubricant when the hydrodynamic
thrust bearing is in operation.

US Pat. No. 9,523,523

SYSTEM AND METHOD FOR MANAGING FLUID LEVEL IN A HVAC SYSTEM

TRANE INTERNATIONAL INC.,...

1. A spill over tank for managing a fluid level in an evaporator of a HVAC system comprising:
a reservoir including an inlet and an outlet;
a first fluid line connected to the inlet, and configured to direct refrigerant from the evaporator into the inlet of the
reservoir;

a fluid level sensor disposed inside the reservoir and configured to measure a refrigerant level in the reservoir;
wherein the spill over tank is configured to be positioned outside of the evaporator of the HVAC system,
and the outlet is configured to direct the refrigerant received in the reservoir to flow out of the spill over tank.

US Pat. No. 10,072,468

MOTOR COOLING SYSTEM FOR CHILLERS

Trane International Inc.,...

1. A chiller system comprising:a refrigeration loop for circulating refrigerant, the refrigeration loop including a gas compression system, a condenser, and an evaporator, wherein the gas compression system includes a compressor for compressing the refrigerant and a motor assembly for driving the compressor, wherein the motor assembly includes:
a motor and a motor housing that houses a stator and a rotor, wherein at least a portion of the motor is rotatable within the motor housing by a shaft that extends from at least one end of the motor to the compressor;
a bearing housing connecting the shaft to the compressor; and
a motor cooling system connecting the refrigeration loop to the motor assembly to provide refrigerant for cooling the motor, wherein the motor cooling system includes a plurality of nozzles within the motor housing for spraying refrigerant on the at least one end of the motor;
wherein the plurality of nozzles each provide a conical spray pattern and together the spray patterns of the plurality of nozzles entirely cover the at least one end of the motor, where the at least one end of the motor includes an end of the stator and an end of the rotor such that the conical spray pattern of each individual one of the plurality of nozzles provides refrigerant to the end of the stator and the end of the rotor.

US Pat. No. 9,525,369

REVERSE ROTATION BRAKING FOR A PM MOTOR

TRANE INTERNATIONAL INC.,...

1. A system for operating a compressor, the system comprising:
a motor having a winding and a rotor;
an inverter bridge configured to provide a voltage to the winding, the inverter bridge including a first switch connected
in a series-type relationship with a second switch, a first diode coupled across the first switch, and a second diode coupled
across the second switch;

a voltage detection circuit configured to detect a back EMF voltage value in the winding; and
a controller coupled to the inverter bridge and the voltage detection circuit, the controller configured to control the first
switch and the second switch to drive the motor, configured to receive the back EMF voltage value in the winding from the
voltage detection circuit, configured to determine a fault has occurred when the detected back EMF voltage value in the winding
equals about zero, by a condition indicative of reverse rotation, and configured to drive one of the first switch and the
second switch on when a fault has occurred is determined, so as to induce a voltage in the winding and cause a short circuit
current to flow,

wherein driving one of the first switch and the second switch on causes the short circuit current to exert a braking force
on the rotor,

wherein the braking force reduces a rate at which the rotor rotates, prevents the motor from producing a voltage and a current
sufficient to damage components of the system, and reduces reverse rotation of the motor, and

wherein the braking force stops the rotor from rotating.

US Pat. No. 10,314,200

VARIABLE FREQUENCY DRIVE OPERATION TO AVOID OVERHEATING

Trane International Inc.,...

1. A method, comprising:providing a variable frequency drive including a switching device in thermal communication with a heat sink including a thermal mass; and
operating the drive in a first mode before active cooling of the heat sink is established and a second mode following the first mode;
wherein operation of the drive in the first mode includes operating the switching device in a first switching frequency mode; and
wherein the first switching frequency mode and the thermal mass of the heat sink are selected to provide a temperature of the switching device below a predetermined threshold before active cooling of the heat sink is established.

US Pat. No. 10,041,619

METHODS AND APPARATUSES TO MODERATE AN AIRFLOW

TRANE INTERNATIONAL INC.,...

2. An airflow system for an HVAC system comprising:a contained airflow path defined by a housing of the HVAC system, the contained airflow path including a lower airflow path and an upper airflow path, the upper airflow path being defined by at least a first top wall and a first bottom wall, the lower airflow path being defined by at least a second top wall and a second bottom wall, and the upper airflow path receiving an airflow from the lower airflow path via an opening in the first bottom wall and an opening in the second top wall;
a fan having an inlet positioned in the upper airflow path,
a heat exchanger being positioned in the lower airflow path,
the upper airflow path has a height upstream of the inlet of the fan, and the inlet of the fan has a height,
the height of the upper airflow path is larger than the height of the inlet of the fan; and
an air modulating apparatus positioned in the upper airflow path, the air flow modulating apparatus is positioned upstream of the inlet of the fan,
the air modulating apparatus extends across the upper airflow path, where a height of the air modulating apparatus is larger than the height of the inlet of the fan,
the housing configured to receive air in the lower airflow path and provide the airflow in a first direction different from a second direction in which the air modulating apparatus and the inlet of the fan are configured to receive the airflow,
the heat exchanger in the lower airflow path is configured to receive the airflow entering the housing in the first direction,
the air modulating apparatus is spaced away and detached from the inlet of the fan,
wherein the air modulating apparatus includes an airflow flow-through structure having a plurality of opening through an airflow resistance structure, and the air modulating apparatus is positioned diagonally in the upper airflow path upstream of the inlet of the fan relative to the second direction leading toward the inlet of the fan,
the airflow modulating apparatus extends entirely across the height of the upper airflow path upstream of the inlet of the fan.
US Pat. No. 9,944,839

REFRIGERANT COMPOSITIONS

TRANE INTERNATIONAL INC.,...

1. A refrigerant composition, comprising:a first component; and
a second component,
the first component is a refrigerant blend of two refrigerants that, when first combined, is an azeotropic blend, to which the second component is added, the second component being a single refrigerant, the first composition including R1336mzz(Z) in a binary blend with R1130(E), the second composition is R1233zd(E), and wherein the respective weight percent of R1336mzz(Z)/R1130(E)/R1233zd(E) ranges from 67.5 wt %/22.5 wt %/10 wt % to 61.5 wt %/20.5 wt %/18 wt % by weight of the refrigerant composition.

US Pat. No. 10,126,066

SIDE MOUNTED REFRIGERANT DISTRIBUTOR IN A FLOODED EVAPORATOR AND SIDE MOUNTED INLET PIPE TO THE DISTRIBUTOR

TRANE INTERNATIONAL INC.,...

1. A heat exchanger for a heating, ventilation, and air conditioning (HVAC) unit, comprising:a shell;
a tube bundle inside the shell;
a refrigerant distributor inside the shell;
a refrigerant inlet through the shell and in fluid communication with the refrigerant distributor; and
a refrigerant inlet piping mounted on the shell and in fluid communication with the refrigerant inlet,
the refrigerant inlet is positioned on a side of the shell at an angle away from the bottom of the shell,
the refrigerant inlet piping is positioned on a side of the shell at an angle away from the bottom of the shell,
wherein the refrigerant distributor comprises
a baffle distribution component having a panel, the baffle distribution component having baffles between which are openings in fluid communication with a first cavity; and
a main distribution component having a panel, the main distribution component having openings through the panel of the main distribution component and in fluid communication with a second cavity,
the panel of the main distribution component and the baffles of the baffle distribution component forming the first cavity,
the panel of the main distribution component and the panel of the baffle distribution component forming the second cavity,
the main distribution component is arranged inside the baffle distribution component, where the openings of the main distribution component are in fluid communication with the first cavity, and where the first and second cavities and the openings of the baffle distribution component and the openings of the main distribution component allow refrigerant to flow into the heat exchanger.

US Pat. No. 9,973,129

HVAC COMPONENTS HAVING A VARIABLE SPEED DRIVE WITH OPTIMIZED POWER FACTOR CORRECTION

Trane International Inc.,...

1. A variable speed drive for an electric motor of an HVAC device, comprising:a power factor correction unit operatively associated with a power supply unit, the power factor correction unit configured for selective activation, the power factor correction unit having a boost topology comprising an inductor and a MOSFET, wherein the MOSFET is turned on at a constant rate and turned off when the current flowing through the inductor reaches a sinusoidal current reference that is synchronized with and proportional to a line voltage input of the variable speed drive;
a power determination unit configured to calculate a power parameter of the electric motor; and
a comparator unit operatively coupled with the power factor correction unit and the power measurement unit, the comparator unit configured to activate the power factor correction unit when the input power of the electric motor rises above a first power threshold and to deactivate the power factor correction unit when the input power of the electric motor falls below a second power threshold.

US Pat. No. 9,890,967

SYSTEMS AND METHODS FOR HVAC AND IRRIGATION CONTROL

Trane International Inc.,...

1. A heating, ventilation, and/or air conditioning (HVAC) system, comprising:
an irrigation subsystem; and
an HVAC system controller both co-located with and coupled to the irrigation subsystem, wherein the HVAC system controller
is configured to:

determine whether a drought condition is occurring at a location of the irrigation subsystem;
transmit a first message to a remote system that indicates occurrence of the drought condition at the location of the irrigation
subsystem, wherein the remote system is remotely located from the irrigation subsystem;

receive at least one of a drought related alert and a drought related control scheme for the irrigation subsystem in response
to transmitting the first message that indicates the occurrence of the drought condition;

display a second message in response to receiving at least one of the drought related alert and the drought related control
scheme, wherein the second message indicates that at least one of the drought related alert and the drought related control
scheme has been received; and

selectively implement control of the irrigation subsystem according to the drought related control scheme in response to receiving
the drought related control scheme at the HVAC system.

US Pat. No. 9,885,504

HEAT PUMP WITH WATER HEATING

TRANE INTERNATIONAL INC.,...

1. A refrigeration circuit, comprising:
a compressor;
a first heat exchanger;
a second heat exchanger;
a third heat exchanger; and
at least one expansion valve being disposed at a downstream position of the third heat exchanger,
wherein the first, second and third heat exchangers share the at least one expansion valve, and the at least one expansion
valve is disposed between the third heat exchanger and the first and second heat exchangers,

wherein the refrigeration circuit is operable in a plurality of modes including a cooling mode, a heating mode, a water-heating
mode, a heat-recovery mode, a simultaneous heating and water heating mode, and a defrost mode.

US Pat. No. 9,816,742

VARIABLE FREQUENCY DRIVE APPARATUSES, SYSTEMS, AND METHODS AND CONTROLS FOR SAME

Trane International Inc.

1. A method for operating a compressor in a refrigerant loop, comprising:
starting the compressor;
analyzing one or more of a motor current waveform, a motor torque waveform, and a waveform of refrigerant pressure at a refrigerant
outlet of the compressor; and

determining the compressor is rotating in a reverse direction in response to at least one of:
determining the presence of a high frequency harmonic exceeding a first predetermined threshold on at least one of the one
or more analyzed waveforms, and

performing a fast Fourier transform (FFT) over a predetermined frequency band and determining the summation of the FFT amplitude
within the predetermined frequency band on at least one of the one or more analyzed waveforms exceeds a second predetermined
threshold; and

stopping the compressor in response to determining the compressor is rotating in the reverse direction.

US Pat. No. 9,605,882

HEAT PUMP WITH EXHAUST HEAT RECLAIM

Trane International Inc.,...

1. A heating, ventilation, and/or air conditioning (HVAC) system, comprising:
a generator comprising an internal combustion engine, the generator being configured to provide exhaust fluid to an exhaust
of the generator;

a heat exchanger configured to receive a refrigerant; and
an exhaust delivery tube connected to the exhaust and configured to deliver received exhaust fluid into contact with the heat
exchanger.

US Pat. No. 10,092,870

FILTER ASSEMBLY

TRANE INTERNATIONAL INC.,...

1. An assembly, comprising:a filter frame including one or more cutouts for permitting airflow therethrough, the filter frame having a first side and a second side that is opposite the first side;
one or more vertical support members and one or more horizontal support members, wherein the one or more vertical support members and the one or more horizontal support members are fixed to the first side of the filter frame;
one or more air filters fixed to the second side of the filter frame;
a plurality of pressure brackets, the plurality of pressure brackets disposed on a side of the one or more air filters facing away from the filter frame, each pressure bracket of the plurality of pressure brackets including a flat surface for contacting a surface of the one or more air filters; and
a plurality of fasteners, wherein the plurality of fasteners extend through the plurality of pressure brackets and the one or more air filters to secure the one or more air filters to the filter frame.

US Pat. No. 9,945,379

DISCHARGE PORT OF A SCREW COMPRESSOR

TRANE INTERNATIONAL INC.,...

1. A screw compressor, comprising:a first rotor including a lobe, the lobe including a tip and a root;
a second rotor including an external surface that forms a groove, the groove is configured to receive the lobe of the first rotor during a discharge cycle, the groove including a top and a bottom; and
a discharge port positioned between the first rotor and the second rotor and disposed where the lobe moves toward the groove during the discharge cycle, the discharge port including an opening defined by a first open area and a second open area;
wherein the first open area is defined by a first distal edge and a first proximal edge, the first distal edge is configured to follow a portion of a track of the tip of the lobe during the discharge cycle, the first proximal edge is configured to follow a portion of a track of the root of the lobe during the discharge cycle,
the second open area is defined by a second distal edge and a second proximal edge, the second distal edge is configured to follow a portion of a track of the top of the groove during the discharge cycle, the second proximal edge is configured to follow a portion of a track of the bottom of the groove during the discharge cycle,
a restrictive portion is positioned between the first open area and the second open area where the lobe moves toward the groove during a discharge cycle, and
the restrictive portion is positioned away from where the lobe and the groove initially contact during the discharge cycle,
wherein the restrictive portion includes a first edge contour, a second edge contour, a connecting edge contour, and a peak, the first edge contour and the second edge contour are connected by the connecting edge contour, the connecting edge contour including a first end and a second end spaced apart from the first end, the peak of the restrictive portion disposed at the first end, and
wherein when the second rotor rotates, the external surface also rotates such that at least a portion of the external surface that is intermediate the top and the bottom of the groove generally aligns with the connecting edge contour of the restrictive portion during the discharge cycle, and when the portion of the groove generally aligns with the connecting edge contour of the restrictive portion, the peak of the restrictive portion to the top of the groove defines a first distance, the second end of the connecting edge contour to the top of the groove defines a second distance, the first distance being less than the second distance.

US Pat. No. 9,759,456

COMBINED HEAT AND POWER HEAT PUMP

Trane International Inc.,...

8. A method of operating a heating, ventilation, and/or air conditioning (HVAC) system, comprising:
circulating a fluid from a device of the HVAC system to a diverter valve of the HVAC system, the device being configured to
generate at least one of electricity and heat;

selectively circulating the fluid through the diverter valve to:
(1) a recovery heat exchanger disposed in an outdoor unit of the HVAC system when the HVAC system is operated in a heating
mode, wherein the recovery heat exchanger is configured to transfer heat from the fluid to a refrigerant of the HVAC system,
and wherein the heated refrigerant is carried from the recovery heat exchanger to an outdoor heat exchanger disposed in the
outdoor unit of the HVAC system; and

(2) a discharge heat exchanger disposed in the outdoor unit of the HVAC system when the HVAC system is operated in a cooling
mode, wherein the discharge heat exchanger is configured to transfer heat from the fluid to an ambient outdoor zone; and

selectively circulating at least a portion of the fluid through a mixing valve configured to selectively direct the portion
of the fluid back to the device without passing the portion of the fluid through either of the recovery heat exchanger and
the discharge heat exchanger in response to a temperature associated with the device being less than a temperature set point;
and

mixing the portion of the fluid diverted back to the device with a second portion of the fluid returning to the device from
at least one of the recovery heat exchanger and the discharge heat exchanger.

US Pat. No. 10,006,661

FURNACE

TRANE INTERNATIONAL INC.,...

1. A furnace, comprising:a heat exchanger compartment housing a heat exchanger system;
a blower compartment housing a blower system; and
a combustion compartment housing a burner system,
wherein the combustion compartment is separated from the heat exchanger compartment by a panel of the heat exchanger compartment,
the combustion compartment is separated from the blower compartment by a panel of the blower compartment,
the panel of the heat exchanger compartment and the panel of the blower compartment form a vertical support column within an enclosure; a window assembly in front of the combustion compartment, the window assembly includes a window support having an air vent; a viewing window panel supported by the window support, the viewing window panel covering the air vent so that vent openings are hidden by the viewing window panel; and one or more windows supported by the viewing window panel.

US Pat. No. 10,003,287

MAGNET DEGRADATION AND DAMAGE CONTROLS AND DIAGNOSTICS FOR PERMANENT MAGNET MOTORS

Trane International Inc.,...

1. A system comprising:a permanent magnet motor including a stator including a plurality of windings electrically coupled to terminals and a rotor including a plurality of permanent magnets;
a motor drive including a plurality of outputs electrically coupled with the terminals;
a controller configured to provide control signals to the motor drive and receive sensed information relating to operation of the permanent magnet motor;
wherein the controller is configured to determine a magnetic flux value using a calculation based upon motor voltage information and motor current information, and the controller is configured to evaluate an elevated temperature error condition of one or more of the plurality of permanent magnets based upon the magnetic flux value and a magnetic flux threshold;
wherein the magnetic flux value is an averaged magnetic flux value.

US Pat. No. 9,797,617

HVAC SYSTEM WITH SELECTIVE FLOWPATH

Trane International Inc.,...

1. A heating, ventilation, and/or air conditioning (HVAC) system, comprising:
a furnace comprising a furnace heat exchanger; and
an indoor HVAC unit comprising a refrigerant heat exchanger and an indoor fan, wherein the indoor fan is configured to generate
an airflow through each of the furnace and the indoor unit;

wherein at least one of the furnace and the indoor HVAC unit comprises a selectively adjustable barrier configured to selectively
allow at least a portion of the airflow to bypass at least one of the furnace heat exchanger and the refrigerant heat exchanger.

US Pat. No. 9,784,376

CHECK VALVE ASSEMBLY

TRANE INTERNATIONAL INC.,...

1. A compressor having a system gas pressure, comprising:
a flow passage defining an inlet, an outlet, and a valve seat located proximate the inlet; and
a valve member, comprising:
a head portion engageable with the valve seat, the head portion having a front face, a rear face located closer to the outlet
than the front face, and a side face extending between the front and rear faces, the head portion further having a first convex
curvature formed between the front face and the side face;

a collar portion extending toward the outlet from the rear face of the head portion;
a stem portion extending toward the outlet from a rear end of the collar portion, a diameter of the head portion is larger
than a diameter of the collar portion, and the diameter of the collar portion is larger than a diameter of the stem portion;
and

a plurality of vanes extending radially outwardly from the collar portion,
wherein the valve assembly is operable between an open position and a closed position,
wherein when the valve assembly is in the closed position, the valve member is engaged with the valve seat at the front face
of the head portion by the system gas pressure that forces the valve member against the valve seat, thereby blocking the flow
passage, and

wherein when the system gas pressure moves the valve member away from the valve seat, the flow passage is opened and the valve
assembly is operated in the open position.

US Pat. No. 9,598,960

DOUBLE-ENDED SCROLL COMPRESSOR LUBRICATION OF ONE ORBITING SCROLL BEARING VIA CRANKSHAFT OIL GALLERY FROM ANOTHER ORBITING SCROLL BEARING

TRANE INTERNATIONAL INC.,...

1. A scroll compressor orbiting scroll bearing lubrication system, comprising:
a lubricating fluid sump;
a compressor crankshaft comprising:
a first eccentric drive pin extending from a first end of the crankshaft, wherein the first drive pin is rotatably disposed
at least partially within a first radial orbital bearing and configured to engage a first orbiting scroll comprising a baseplate,
the baseplate having a spiral wrap element extending from a first side of the baseplate and having a sleeve extending from
a second side of the baseplate opposite to the first side, the sleeve defining a cavity, and further comprising one or more
oil passages in the baseplate;

a second eccentric drive pin extending from a second end of the crankshaft, wherein the second drive pin is rotatably disposed
at least partially within a second radial orbital bearing and configured to engage a second orbiting scroll;

an orbiting scroll hydrodynamic thrust bearing associated with the first orbiting scroll,
wherein the first radial orbital bearing and the orbiting scroll hydrodynamic thrust bearing are configured to receive lubricating
fluid from the lubricating fluid sump via the one or more oil passages in the baseplate;

wherein the one or more oil passages include at least one first oil passage that extends through the baseplate to the second
side of the baseplate to feed lubricating fluid into the cavity defined by the sleeve of the baseplate to lubricate the first
radial orbital bearing; and

the one or more oil passages include at least one second oil passage that extends through the baseplate to the second side
of the baseplate and opens to a location outside of the cavity defined by the sleeve so as to feed lubricating fluid to the
second side of the baseplate to lubricate the orbiting scroll hydrodynamic thrust bearing.

US Pat. No. 9,163,862

RECEIVER FILL VALVE AND CONTROL METHOD

Trane International Inc.,...

1. A method for controlling a heat pump selectively operable in a heating mode, a defrost mode, and a transition mode, the
heat pump includes an indoor heat exchanger, an outdoor heat exchanger, a compressor compressing a refrigerant, a receiver,
a heating expansion valve, a cooling expansion valve, a directional valve, a check valve, and a receiver valve, the directional
valve determines a direction of flow through the indoor heat exchanger and the outdoor heat exchanger, the heating expansion
valve connects the outdoor heat exchanger in fluid communication with the receiver, the cooling expansion valve connects the
indoor heat exchanger in fluid communication with the outdoor heat exchanger, and the check valve and the receiver valve are
connected in parallel flow relationship with each other to convey the refrigerant between the indoor heat exchanger and the
receiver, the method comprising:
operating the heat pump in the heating mode by releasing heat from the indoor heat exchanger and absorbing heat into the outdoor
heat exchanger;

after the heating mode, operating the heat pump in the defrost mode by opening the cooling expansion valve and releasing heat
from the outdoor heat exchanger; and

transitioning out of the defrost mode and back to the heating mode via a transition mode, wherein said transition mode comprises
the steps of

(a) releasing heat form the outdoor heat exchanger,
(b) opening the heating expansion valve and closing the receiver valve while the compressor continues running; wherein the
step of closing the receiver valve prohibits the refrigerant from flowing from the receiver to the indoor heat exchanger and
wherein the step of opening the heating expansion valve is performed while the cooling expansion valve is still open; and

wherein said steps of the transitioning mode occur after the defrost mode and prior initiating the heating mode.

US Pat. No. 10,006,685

SYSTEM AND METHOD FOR CONTROLLING A COOLING SYSTEM

TRANE INTERNATIONAL INC.,...

1. A computer-implemented controller device for controlling power input to a chiller plant, wherein the chiller plant includes components, wherein the components include one or more chiller(s), one or more condenser pump(s) for pumping fluid, one or more tower fan(s) for cooling the fluid, and a fluid circuit for directing a flow of the fluid pumped by the one or more condenser pump(s) between the one or more chiller(s) and the one or more tower fan(s), the computer-implemented controller device comprises:a processor executing computer-readable instructions for controlling the chiller plant,
wherein the processor determines a first sensitivity (?kW/?lift)1 of a first power input to one of the chiller(s) as a function of lift,
the processor determines a second sensitivity (?kW/?lift)2 of a second power input to one or more component(s) of the chiller plant as a second function of lift,
the processor aligns the first sensitivity with the second sensitivity, and
the processor sets power setpoints for one or more of the components based on the alignment of the first sensitivity with the second sensitivity.

US Pat. No. 9,903,626

FLUID MANAGEMENT IN A HVAC SYSTEM

TRANE INTERNATIONAL INC.,...

1. A spill over tank for an evaporator of a heating, ventilation, and air conditioning (HVAC) system, comprising:
a reservoir fluidly connected to the evaporator and configured to receive refrigerant from the evaporator; and
a fluid level sensor disposed inside the reservoir and configured to measure a refrigerant level in the reservoir, the refrigerant
level in the reservoir indicating an operational refrigerant level in the evaporator,

wherein the reservoir is externally connected to the evaporator of the HVAC system.

US Pat. No. 9,901,996

TUBE CUTTING DEVICE AND METHOD OF USING THE SAME

TRANE INTERNATIONAL INC.,...

1. A tube cutting system, comprising:
a tube holding member having a radially adjustable outer diameter fittable inside a target tube, the tube holding member being
configured to hold the target tube from an inside of the target tube, allowing the target tube to be cut from an outside;
and

a cutter carrier member including an elongate body and a cutting wheel holder attached to the elongate body, a cutting wheel
being secured to the cutting wheel holder at a rotation axis of the cutting wheel, the cutting wheel holder being pivotable
about a pivotal axis, the pivotal axis being eccentric relative to a central longitudinal axis of the elongate body, such
that when in a non-extended position, the cutting wheel is entirely positioned within a diameter of the elongate body, and
when in an extended position, at least a portion of the cutting wheel extends outwardly beyond the diameter of the elongate
body, allowing the cutting wheel to cut into a wall of the target tube,

wherein the cutter carrier member further includes a shaft supporting the cutting wheel holder that is rotatable around the
pivotal axis of the cutting wheel holder relative to the elongate body of the cutter carrier member, the pivotal axis being
eccentrically offset from the longitudinal axis of the elongate body, and

wherein the tube holding member and the cutter carrier member are detached from each other, and
wherein an indentation is defined on a side face of the tube holding member with the indentation aligned in a longitudinal
direction with the cutting wheel; when the cutting wheel is in the extended position, the cutting wheel is configured to extend
sufficiently radially outward from the cutter carrier member such that the cutting wheel cuts through the target tube and
passes at least partially into the indentation.

US Pat. No. 9,879,164

REFRIGERANT ADDITIVES AND COMPOSITIONS

TRANE INTERNATIONAL INC.,...

1. A refrigerant to provide lubrication in an HVAC system, comprising:
1-chloro-3,3,3 trifluoropropene (E); and
wherein the refrigerant provides lubrication and is oil-free.

US Pat. No. 9,860,733

DEVICE AND METHOD FOR SETTING NETWORK AND CHANNEL INFORMATION IN A NETWORK DEVICE

TRANE INTERNATIONAL INC.,...

1. A method for storing information to an Extended Permanent Account Number Identification (EPID) data for a network device,
the method comprising:
prior to powering up a computer readable memory of the network device, presetting an identifier information for the network
device the by using a hardware component that is connected to the computer readable memory; and

upon powering up the computer readable memory, storing to the computer readable memory the EPID data, wherein the EPID data
includes the identifier information,

the identifier information includes one or more of a unique network identifier of a network for the network device to join,
a channel identifier of a network for the network device to join, and a unique device information for the network device.

US Pat. No. 9,845,809

SEALING JOINT FOR A COMPRESSOR CASING

TRANE INTERNATIONAL INC.,...

1. A sealing joint for a centrifugal compressor, comprising:
an inner cavity defined inside a casing, the casing includes a first cover and a second cover,
a sealing joint between the first cover and second cover,
the first cover includes:
a first portion having a first surface;
a first step, the first step extends into the first cover,
the first surface radially extends toward the inner cavity, the first surface extending from an external side of the first
cover to the first step;

a second portion having a second surface;
a second step, the second step extends into the first cover, the second step extends farther into the first cover than the
first step,

the second surface radially extends toward the inner cavity, the second surface extending from the first step to the second
step;

the second step defines an upper contact surface; and
a third portion having a third surface,
the third surface radially extends to the inner cavity, the third surface extending from the second step to the inner cavity;
the second cover includes:
a first portion having a fourth surface; and
a protrusion,
the fourth surface radially extends toward the inner cavity, the fourth surface extending from an external side of the second
cover to the protrusion,

the fourth surface is configured to mate with the first surface and the second surface of the first cover when the first and
second covers are connected,

the protrusion radially extends to the inner cavity, the protrusion extending from the fourth surface to the inner cavity,
the protrusion extending outward toward the third surface of the first cover and outward relative to the fourth surface of
the second cover, and

the protrusion defines a lower contact surface;
a mounting mechanism inserted through the first surface of the first cover and the fourth surface of the second cover; and
a sealant separately applied between the fourth surface of the second cover and the first and second surfaces of the first
cover, wherein a depth of the sealant between the second surface and the fourth surface is larger than a depth of the sealant
between the first surface and the fourth surface,

wherein the upper contact surface of the second step and the lower contact surface of the protrusion are in direct contact,
and

when the first cover and the second cover are connected, the sealant is disposed on the lower contact surface of the protrusion,
and a layer of the sealant is maintained between the first cover and the second cover, such that the sealant radially extends
along the first surface and the second surface of the first cover, extending from the external side of the first cover to
the second step, and such that the sealant radially extends along the fourth surface of the second cover, extending from the
external side of the second cover to the protrusion.

US Pat. No. 9,835,348

SYSTEMS AND METHODS FOR CONTROLLING HUMIDITY

Trane International Inc.,...

1. A heating, ventilation, and/or air conditioning (HVAC) system, comprising:
a plurality of humidity sensors, wherein each of the plurality of humidity sensors is associated with at least one of a plurality
of zones;

a system component configured to adjust a humidity of circulating air in each of the plurality of zones; and
a controller comprising a user interface configured to display a list of the plurality of zones and allow selection of a humidity
priority sensor via selection of a humidity priority zone from the list of the plurality of zones displayed on the user interface,
wherein a humidity priority indicator is displayed on the user interface to indicate which zone displayed in the list of the
plurality of zones is selected as the priority humidity zone, and wherein the controller is configured to operate the system
component of the HVAC system to adjust the humidity of circulating air in each of the plurality of zones in response to feedback
from only the humidity priority sensor to an exclusion of feedback from each of the other humidity sensors.

US Pat. No. 9,816,506

INTERMEDIATE OIL SEPARATOR FOR IMPROVED PERFORMANCE IN A SCROLL COMPRESSOR

TRANE INTERNATIONAL INC.,...

10. A method of providing oil lubrication to a multi-stage compressor, the method comprising:
fluidically coupling a first, input stage discharge via an interconnecting pipe to a second, output stage suction of a multi-stage
compressor, the multi-stage compressor comprising a first, input stage of compression, a second, output stage of compression,
and an oil separator, wherein the first, input stage discharge is fluidically coupled to the second, output stage suction
via the interconnecting pipe such that refrigerant flows from the first, input stage of compression to the second, output
stage of compression, the oil separator being fluidically coupled to the first, input stage discharge and the second, output
stage suction, and the oil separator being fluidically connected to a first, input stage suction bearing oil inlet and a second,
output stage suction bearing oil inlet;

operating the multi-stage compressor such that a mixture of oil and refrigerant is discharged from the first, input stage
discharge;

separating the oil from the refrigerant from the discharged mixture via the oil separator;
transferring the separated oil to suction cavity bearings associated with both the first, input stage of compression and the
second, output stage of compression via the first, input stage suction bearing oil inlet and the second, output stage suction
bearing oil inlet; and

transferring the separated refrigerant to the second, output stage suction via the interconnecting pipe.

US Pat. No. 9,816,733

ECONOMIZER INJECTION ASSEMBLY AND METHOD

TRANE INTERNATIONAL INC.,...

1. A chiller, comprising:
a condenser;
an evaporator;
a compressor including a first compression stage and a second compression stage;
a refrigerant conduit, the refrigerant conduit configured to be in fluid communication with the first compression stage and
the second compression stage; and

an economizer,
wherein the economizer is configured to form a fluid communication with the refrigerant conduit between the first and the
second compressor stages,

the fluid communication is formed through an injection port,
the injection port has an internal surface feature configured to inject refrigerant from the economizer into a refrigerant
flow direction in the refrigerant conduit,

the internal surface feature has a smooth curve configured to direct refrigerant to flow in a direction similar to the refrigerant
flow direction in the refrigerant conduit, and

the fluid communication is formed closer to the first compression stage than the second compression stage.

US Pat. No. 9,788,412

TECHNIQUES AND ARRANGEMENTS FOR MULTIPLE COMPONENT GROUNDING

Trane International Inc.,...

1. A human machine interface, comprising:
a display module including a first circuit board including a first ground plane, and a bezel extending around at least a portion
of the first circuit board;

a retaining member configured to engage with the display module and including an electrically conductive coating; and
a second circuit board configured to engage with the retaining member and including asecond ground plane;
wherein the first ground plane of the first circuit board, the bezel and the second ground plane of the second circuit board
are electrically bonded together when the retaining member is engaged with the display module and the first and second circuit
boards are engaged with the retaining member, and wherein the retaining member is disposed between the first circuit board
and the second circuit board.

US Pat. No. 9,765,984

THERMOSTAT TEMPERATURE COMPENSATION MODELING

TRANE INTERNATIONAL INC.,...

1. A tangible computer accessible storage medium storing program instructions executable by a computer to execute a method
for configuring a temperature control system of a heating, ventilation, and air conditioning (HVAC) system controller, the
method comprising:
executing a dynamic calibration mode, the dynamic calibration mode including:
enabling one or more fans in an HVAC system for a fan-enabled time period;
monitoring temperature of a conditioned space determined by a sensor in the HVAC system during the fan-enabled time period;
disabling the one or more fans in the HVAC system for a fan-disabled time period;
monitoring temperature of the conditioned space by the sensor in the HVAC system during the fan-disabled time period; and
determining, by the HVAC system controller, a dynamic correction factor based on the temperatures monitored during the fan-enabled
and fan-disabled time periods.

US Pat. No. 9,762,445

DEVICE AND METHOD FOR AUTOMATIC SWITCHING OF COMMUNICATION PROTOCOL OF NETWORK DEVICES BASED ON USER ACTION

TRANE INTERNATIONAL INC.,...

1. A device for automatic communication protocol switching between devices connected to a computer network system, comprising:
a processor;
a network interface connected to the processor; and
a memory connected to the processor, including computer-readable and processor executable computer instructions:
for communicating in a first communication protocol requiring a first bandwidth and in a second communication protocol requiring
a second bandwidth, the second bandwidth being larger than the first bandwidth, and

for switching between the first communication protocol and the second communication protocol for communicating data via the
network interface based on a size of the data compared to the first bandwidth and the second bandwidth,

wherein when the processor executes the computer instructions, the processor compares the size of data to the first bandwidth
and to the second bandwidth, determines which of the first bandwidth or the second bandwidth is to be selected based on the
comparison, and communicates the data to a second computer network device using the selected one of the first communication
protocol or the via the network interface,

when the second computer network device is not able to receive the data transmitted from the processor using the first communication
protocol, the processor transmits the data to the second computer network device using the second communication protocol,
and the second computer network device receives the data from the processor sent via the second communication protocol.

US Pat. No. 9,574,791

ACOUSTIC DISPERSING AIRFLOW PASSAGE

TRANE INTERNATIONAL INC.,...

1. An acoustic dispersing airflow passage, comprising:
a plenum housing having a first end and a second end;
a perforated wall disposed within the plenum housing, the perforated wall having an inner side and an outer side, the outer
side being disposed relatively closer to the plenum housing than the inner side, the inner side being opposite the outer side,
the perforated wall surrounding an airflow passage, the perforated wall extending between the first end and the second end
of the plenum housing, the perforated wall being enclosed by the plenum housing;

a centrifugal fan disposed outside of the plenum housing, the centrifugal fan being fluidly connected to the airflow passage,
the centrifugal fan being configured to deliver a stream of air through the airflow passage;

an acoustic dispersing space between the plenum housing and the outer side of the perforated wall, the acoustic dispersing
space being free of acoustic dispersing material, the acoustic dispersing space having a first volume, the acoustic dispersing
space surrounding the airflow passage;

the airflow passage having a second volume; and
the first volume being at least two times larger than the second volume.

US Pat. No. 10,066,843

METHODS FOR OPERATING AND CONSTRUCTING A BLOW THROUGH AIR HANDLER

Trane International Inc.,...

15. A method of constructing an air handling unit, comprising:forming an air handling unit having an air supply opening and an air return opening;
mounting a blower in the air handling unit adjacent to the air return opening, the blower being configured to provide an airflow via a discharge airflow path having a downstream direction that extends from an air outlet of the blower to the air supply opening, and the discharge airflow path having a longitudinal axis;
mounting a heat exchanger in the air handling unit adjacent to the air supply opening and downstream of the blower in the discharge airflow path of the blower, the heat exchanger comprising a first section and a second section adjacent to and downstream of the air outlet of the blower, and each of the first section and the second section comprising a plurality of fins;
mounting at least one heating element in the air handing enclosure adjacent to the air supply opening and downstream of the heat exchanger in the discharge airflow path of the blower; and
configuring the plurality of fins of the first section of the heat exchanger and the plurality of fins of the second section of the heat exchanger to stabilize an airflow exiting the heat exchanger prior to the airflow contacting the at least one electrically-powered resistive heating element by orienting the plurality of fins of the first section of the heat exchanger and the plurality of fins of the second section of the heat exchanger longitudinally parallel to the longitudinal axis of the discharge airflow path.

US Pat. No. 9,982,900

METHOD OF ATTACHING ELECTRODES TO PLATED THERMOSET PLASTIC HEATED BLOWER HOUSING

Trane International Inc.,...

1. A blower housing, comprising:an inner surface comprising an electrically-conductive plating and configured as an ohmic heater, wherein the ohmic heater comprises a first electrode disposed around and electrically coupled to an inner surface wall of the blower housing that comprises a first diameter and a second electrode disposed around and electrically coupled to a second inner surface wall of the blower housing that comprises a second diameter that is different than the first diameter.

US Pat. No. 9,982,912

FURNACE CABINET WITH NOZZLE BAFFLES

Trane International Inc.,...

1. A furnace, comprising:a furnace cabinet;
a primary heat exchanger;
a secondary heat exchanger located upstream relative to the primary heat exchanger with regard to location within a circulation airflow path;
a first baffle carried by a first wall of the furnace cabinet; and
a second baffle carried by a second wall of the furnace cabinet, wherein the second baffle is located opposite the first baffle, and wherein the second wall is located opposite the first wall;
wherein each of the first baffle and the second baffle comprises a respective twice bent plate defining respective and opposing lower portions, middle portions, and upper portions, and
wherein the first baffle and the second baffle cooperate to form a nozzle within the furnace cabinet.

US Pat. No. 9,970,563

VALVE CAP WITH INTEGRAL SEAL

TRANE INTERNATIONAL INC.,...

1. A valve assembly, comprising:a first integrally formed structural member including a valve body that has a cylindrical wall and a free end defining an opening, the valve body defining an inner space; and
a second integrally formed structural member including a valve cap that closes the opening of the valve body, the valve cap comprising:
a side wall;
a closed end connected to the side wall, the closed end and the side wall defining an interior space;
an integral sealing member that extends from the closed end into the interior space, at least part of the integral sealing member being extendable into the opening of the valve body and seals against an inner surface of the valve body, the integral sealing member being cylindrical and concentric with the side wall of the cap;
a first void space defined by an inner surface of the integral sealing member; and
a second void space in an annular shape defined by an outer surface of the integral sealing member, an inner surface of the side wall of the valve cap and an inner surface of the closed end of the valve cap,
wherein the free end of the valve body is received in the second void space,
wherein the integral sealing member being flexible such that when an internal pressure in the first void space increases due to a flow of fluid leaking toward the opening of the valve body, the integral sealing member is pressurized against the inner surface of the valve body, thereby tightening a seal between the integral sealing member and the valve body,
wherein the integral sealing member has a distal end, the outer surface of the integral sealing member tapers toward the distal end and tapers inwardly toward the inner surface of the integral sealing member to facilitate insertion of the free end of the valve body into the second void space, and
wherein an inner diameter of the valve body at a threaded section is smaller than an outer diameter of the integral sealing member.

US Pat. No. 9,958,176

HVAC SYSTEM WITH CAMERA AND MICROPHONE

Trane International Inc.,...

14. A method for controlling a heating, ventilation, and air conditioning (HVAC) system, comprising:entering a first setting into an HVAC system controller, wherein the first setting is at least one of a first temperature setting, a first ventilation setting, a first humidity setting, and a first air quality setting;
capturing at least one of an image data from an image sensor in a first zone or an audio data from a microphone in a first zone, wherein the first zone is at least partially controlled by the HVAC system;
receiving at least one of the image data or the audio data into the HVAC system controller;
recognizing at least one particular occupant in the first zone as a result of receiving the image data,
prioritizing a first particular occupant over another particular occupant in response to recognizing the at least one particular occupant in the image data or the audio data in the first zone,
recognizing a condition as a result of receiving the audio data into the HVAC system controller;
changing the first setting to a second setting in the HVAC system controller as a result of recognizing the at least one particular occupant in the first zone and changing the first setting to a third setting as a result of recognizing the condition in the first zone, wherein the second setting is a predefined setting associated with the at least one particular occupant, and wherein the third setting is a predefined setting associated with the condition in the first zone; and
changing the first setting to the predefined setting associated with the at least one particular occupant in response to prioritizing the first particular occupant in the first zone.

US Pat. No. 9,897,357

ISENTROPIC EXPANSION DEVICE

Trane International Inc.,...

1. A heating, ventilation, and air conditioning (HVAC) system comprising:
a heat exchanger; and
an expansion device disposed upstream and in fluid communication with the heat exchanger, wherein the expansion device comprises
an inlet section, a flow section, and an expansion section comprising a gradually increasing diameter between the flow section
and a most downstream end of the expansion device,

wherein the flow section comprises a diameter equal to a diameter of a most upstream diameter of the expansion section, and
wherein a length of the expansion section is at least 3 times the diameter of the flow section.

US Pat. No. 9,870,009

HVAC SYSTEM WITH IMPROVED CONTROL SWITCHING

Trane International Inc.,...

1. A heating, ventilation, and/or air conditioning (HVAC) switching circuit, comprising:
an alternating current (AC) power source;
at least one external control signal relay connected to the AC power source;
an interlock switch connected to the AC power source;
a full wave rectifier configured to receive an alternating current (AC) from the AC power source and output a direct current
(DC) when each of the at least one external control signal relay and the interlock switch are closed; and

a power relay activation control circuit comprising at least one capacitor, wherein the power relay activation control circuit
is configured to receive the direct current from the full wave rectifier and provide actuation control of a power relay in
response to a voltage exceeding a predetermined threshold switching voltage.

US Pat. No. 9,733,002

SCREW COMPRESSOR DRIVE CONTROL

TRANE INTERNATIONAL INC.,...

1. A method to control operation of a compressor of a refrigeration system, comprising:
receiving status signals regarding a pulsing torque generated by one or more rotors of the compressor;
determining an operating point of the compressor based upon the received status signals;
determining a torque profile for the compressor based upon the operating point, wherein the determined torque profile represents
variance in torque applied to the compressor during a revolution of the one or more rotors of the compressor; and

adjusting torque applied to the compressor per the determined torque profile.

US Pat. No. 9,683,758

COAXIAL ECONOMIZER ASSEMBLY AND METHOD

TRANE INTERNATIONAL INC.,...

1. A coaxial economizer for use in a chiller system, comprising:
an inner housing;
an outer housing, the inner housing and the outer housing having a common longitudinal axis, the outer housing having an inlet
for receiving a fluid from a compressor and an outlet for conveying the fluid;

a flow chamber forming a fluid flow path about the inner housing;
a flash chamber for flashing fluid in a liquid state to a gas state; and
a flow passage between the flash chamber and the flow chamber for conveying a flashed gas from the flash chamber to the flow
chamber,

wherein the flashed gas conveyed from the flash chamber and the fluid received from the inlet of the outer housing mix along
the fluid flow path toward the outlet of the outer housing.

US Pat. No. 9,599,118

SYSTEM AND METHOD FOR CONTROLLING A SYSTEM THAT INCLUDES FIXED SPEED AND VARIABLE SPEED COMPRESSORS

TRANE INTERNATIONAL INC.,...

1. A system for controlling the operation of a variable speed compressor and a fixed speed compressor,
wherein the system comprises
a fixed speed compressor;
a variable speed compressor, and
a control unit that includes a PI controller and is configured to:
(a) determine a first parameter value;
(b) determine a first PI capacity value based on the first parameter value determined in (a) and a set point using the PI
controller;

(c) determine a first operating mode based on the first PI capacity value determined in (b);
(d) operate the fixed speed and variable speed compressors based on the determination made in (c);
(e) determine a second operating mode after (d);
(f) determine an operational state of the fixed speed compressor;
(g) operate the fixed speed compressor based on the determination made in (f);
(h) determine a speed of the variable speed compressor using the PI controller; and
(i) operate the variable speed compressor according to an operational state based on the determination made in (h).

US Pat. No. 10,041,840

VARIABLE FREQUENCY DRIVE TEMPERATURE DETERMINATION

Trane International Inc.,...

1. A system, comprising:inverter circuitry including one or more transistors in thermal communication with a substrate;
a heat sink in thermal communication with the inverter circuitry; and
a controller configured to:
determine a temperature of the heat sink;
determine a temperature of the substrate as the greater of a sensed temperature value of the substrate and a calculated temperature value of the substrate based upon the determined temperature of the heat sink; and
determine an internal temperature of the one or more transistors based upon the determined temperature of the substrate and a thermal impedance between the substrate and the one or more transistors.

US Pat. No. 9,995,495

SYSTEM AND METHOD FOR HVAC CONDENSATE MANAGEMENT

Trane International Inc.,...

1. An HVAC coil assembly, comprising:a first slab coil and a second slab coil configured in a V-shaped coil arrangement, wherein the first slab coil and the second slab coil are configured to at least partially segregate a low pressure zone associated with a downstream side of the HVAC coil assembly from a high pressure zone;
a slab cap disposed over an upper end of each of the first slab coil and the second slab coil, each slab cap comprising at least one undulating disturber disposed near the upper end of each of the first slab coil and the second slab coil within the low pressure zone, wherein the undulating disturbers are configured locally to reduce a velocity of an airflow to reduce an amount of condensation being transported through reduced velocity regions; and
an air leakage path between the low pressure zone and the high pressure zone that is configured to allow airflow to transfer from the high pressure zone to the low pressure zone to reduce an amount of condensation leaking from the low pressure zone to the high pressure zone.

US Pat. No. 9,671,146

REFRIGERANT COOLING AND LUBRICATION SYSTEM WITH REFRIGERANT VAPOR VENT LINE

TRANE INTERNATIONAL INC.,...

1. A heating, ventilation, air conditioning (HVAC) unit for an HVAC system comprising:
a compressor having a motor and a drive;
a condenser fluidly connected to the compressor;
an evaporator fluidly connected to the condenser;
a unit controller; and
a refrigerant cooling and lubrication assembly that comprises:
a condenser source line fluidly connected to the condenser, the condenser source line having a first flow control device,
an evaporator source line fluidly connected to the evaporator, the evaporator source line having a second flow control device,
a refrigerant pump line fluidly connected to the condenser source line and fluidly connected to the evaporator source line,
the condenser source line and the evaporator source line feed into the refrigerant pump line, the refrigerant pump line is
fluidly connected to at least one of the motor and the drive of the compressor,

a refrigerant pump located on the refrigerant pump line, the refrigerant pump having an inlet and an outlet fluidly connected
with the refrigerant pump line, the refrigerant pump having a housing and a volute casing, the volute casing is configured
with a mass suitable to reduce the amount of refrigerant vapor present in the refrigerant pump line, and

a vent line fluidly connected to the refrigerant pump line, the vent line configured to relieve the refrigerant pump line
of vapor refrigerant flowing through the refrigerant pump line and upstream from the compressor.

US Pat. No. 9,625,184

MULTI-SPLIT HVAC SYSTEM

Trane International Inc.,...

1. A heating, ventilation, and/or air conditioning (HVAC) system, comprising:
a first variable refrigerant flow outdoor unit comprising an outdoor metering device;
a first ducted variable speed indoor unit comprising a first indoor metering device connected in direct fluid communication
with the outdoor metering device, wherein the first ducted variable speed indoor unit is configured to selectively exchange
refrigerant with the first variable refrigerant flow outdoor unit, wherein the first ducted variable speed indoor unit is
configured to deliver supply air through a supply plenum that feeds the supply air to a plurality of zones through a plurality
of supply air ducts, and wherein the first ducted variable speed indoor unit is configured to receive return air through a
return plenum that receives air from the plurality of zones through a plurality of return air ducts;

a second variable speed indoor unit comprising a second indoor metering device connected in direct fluid communication with
the outdoor metering device, wherein the second variable speed indoor unit is configured to selectively exchange refrigerant
with the first variable refrigerant flow outdoor unit; and

a system controller configured to control a speed of each of the first variable refrigerant flow outdoor unit, the first ducted
variable speed indoor unit, and the second variable speed indoor unit in response to a demand for at least one of heating
and cooling in a zone conditioned by at least one of the first ducted variable speed indoor unit, and the second variable
speed indoor unit, wherein the speed of the first ducted variable speed indoor unit and the speed of the first variable refrigerant
flow outdoor unit are controlled by the system controller as a function of a demand associated with a zone conditioned by
the second variable speed indoor unit.

US Pat. No. 9,518,767

REFRIGERANT COOLING AND LUBRICATION SYSTEM

TRANE INTERNATIONAL INC.,...

1. A heating, ventilation, air conditioning (HVAC) unit for an HVAC system comprising:
a compressor having a motor and a drive;
a condenser fluidly connected to the compressor;
an evaporator fluidly connected to the condenser;
a unit controller; and
a refrigerant cooling and lubrication assembly that comprises:
a condenser source line fluidly connected to the condenser,
an evaporator source line fluidly connected to the evaporator,
a refrigerant pump line fluidly connected to the condenser source line and fluidly connected to the evaporator source line,
the condenser source line and the evaporator source line feed into the refrigerant pump line, the refrigerant pump line is
fluidly connected to at least one of the motor and the drive of the compressor,

a refrigerant pump located on the refrigerant pump line, the refrigerant pump having an inlet and an outlet fluidly connected
with the refrigerant pump line, and

a flow control device disposed on the condenser source line, the flow control device disposed on the condenser source line
having an open state and a closed state,

wherein during a startup condition of the compressor, the unit controller is configured to activate the flow control device
disposed on the condenser source line to the closed state, where the flow control device disposed on the condenser source
line in the closed state is configured to decouple the condenser from the refrigerant cooling and lubrication assembly, and

wherein during an operating condition of the compressor, the unit controller is configured to activate the flow control device
disposed on the condenser source line to direct refrigerant from the condenser through the condenser source line and through
the refrigerant pump line and refrigerant pump to at least one of the motor and the drive of the compressor to cool at least
one of the motor and the drive of the compressor,

wherein the controller is configured to receive an input from a sensor to determine whether an appropriate pressure differential
is present in the refrigerant pump line, in order to activate the flow control device disposed on the condenser source line
to direct refrigerant to the compressor.

US Pat. No. 10,030,660

PULSATION AND VIBRATION CONTROL DEVICE

TRANE INTERNATIONAL INC.,...

1. A pulsation and vibration control device, comprising:a muffler unit, comprising:
a flange on a compressor end;
a muffler body extending from a first part of the flange towards a discharge line and containing at least one vibration attenuation structure; and
a free end opposite the compressor end; and
a bellows assembly surrounding the muffler body, wherein the bellows assembly is attached to the flange at a second part, different than the first part, and extends from the flange to the discharge line; and
wherein the muffler body and the bellows assembly do not contact one another and the free end of the muffler and the discharge line do not contact one another.

US Pat. No. 9,964,333

SYSTEM AND METHOD FOR FURNACE FLUID FLOW MANAGEMENT

Trane International Inc.,...

1. A furnace, comprising:a primary heat exchanger tube;
a secondary heat exchanger comprising a plurality of secondary heat exchanger tubes;
a hot header configured to provide a fluid flow path between an output of the primary heat exchanger tube to an input of the secondary heat exchanger; and
a perforated fluid flow plate disposed at least partially within the hot header, wherein the perforated fluid flow plate comprises an interior wall comprising:
a first portion distance from the secondary hear exchanger tubes, the first portion comprising a plurality of perforations that are misaligned relative to the secondary heat exchanger tubes; and
a second portion abutting one or more of the secondary heat exchanger tubes to provide a fluid flow path from the hot header to the one or more of the secondary heat exchanger tubes.

US Pat. No. 9,903,451

LINKAGE TO ACTUATE INLET GUIDE VANES

TRANE INTERNATIONAL INC.,...

18. A method for actuating guide vanes includes receiving a rotating axial motion by a transition linkage, comprising:
receiving a rotational motion by a transition linkage,
transmitting a linear motion through the transition linkage;
receiving the linear motion by a bracket;
transmitting the linear motion through the bracket;
rotating a driver ring connected to the bracket, and
rotating one or more guide vanes to one or more open states or one or more relatively closed states.
US Pat. No. 9,868,888

REFRIGERANT COMPOSITIONS

TRANE INTERNATIONAL INC.,...

1. A refrigerant composition comprising:
an amount of a R125 refrigerant;
an amount of a R32 refrigerant; and
an amount of a R1234yf refrigerant,
the R32 refrigerant has higher flammability than the R125 refrigerant, and the R1234yf refrigerant has higher flammability
than the R125 refrigerant,

wherein the amount of R125 refrigerant is 5.5% wt, 6.5% wt, 7.0% wt, 7.5% wt, or 10.5% wt.

US Pat. No. 9,851,130

ELECTRONICS COOLING USING LUBRICANT RETURN FOR A SHELL-AND-TUBE STYLE EVAPORATOR

TRANE INTERNATIONAL INC.,...

1. A refrigeration system, comprising:
a compressor having a suction port and a discharge port, the compressor being configured to receive a heat exchange fluid
from the suction port, compress the heat exchange fluid, and discharge the compressed heat exchange fluid through the discharge
port;

a condenser fluidly connected to the discharge port and being configured to receive the compressed heat exchange fluid from
the compressor and condense the compressed heat exchange fluid;

an expansion device fluidly connected to the condenser and configured to receive the condensed heat exchange fluid from the
condenser;

an evaporator having an inlet port, a first outlet port, and a second outlet port, the evaporator being configured to receive
heat exchange fluid from the expansion device through the inlet port, evaporate a portion of the heat exchange fluid, and
discharge the evaporated portion of the heat exchange fluid through the first outlet port to a line fluidly connected to the
suction port;

a fluid line fluidly connecting the second outlet port to the suction port;
a heat sink;
a heat exchanger fluidly connected to the fluid line; and
a coolant loop connecting the heat sink and the heat exchanger and configured to circulate a coolant between the heat sink
and the heat exchanger such that heat from an electronic device is transferred to the heat sink, heat from the heat sink is
transferred to the coolant, heat from the coolant is transferred to the heat exchange fluid in the heat exchanger to cool
the coolant, the heat sink, and the electronic device.

US Pat. No. 9,784,602

SYSTEM FOR MEASURING FLUID FLOW IN A FLUID PASSAGE OF AN HVAC SYSTEM

TRANE INTERNATIONAL INC.,...

1. A fluid flow passage comprising:
a partition extending from a first wall of the fluid flow passage to a distal end of the partition and to a perimeter of the
fluid flow passage;

a fluid flow measuring passage through the partition;
a flow-through passage extending from the distal end of the partition to a second wall of the fluid flow passage, the second
wall being opposite to the first wall of the fluid flow passage; and

a flow rate measuring device positioned in the fluid flow measuring passage,
wherein the partition and the flow-through passage are arranged in a side-by-side fashion,
wherein the partition blocks a portion of the fluid flow passage that is surrounded by the first wall, the perimeter and the
distal end of the partition to provide a sensitivity flow rate to the fluid flow measuring passage, and

wherein the flow rate measuring device has a minimal sensitivity flow rate requirement, and when the fluid flow passage has
a fluid flow of a minimal total flow rate, the partition is configured so that the fluid flow measuring passage has the minimal
sensitivity flow rate requirement.

US Pat. No. 9,777,962

COIL SUPPORT HAVING CONDENSATE MANAGEMENT FUNCTIONALITY

TRANE INTERNATIONAL INC.,...

1. A coil support for supporting coil headers and managing a condensate, comprising
a base having a principal surface elongated along a longitudinal axis from a first end to a second end and elongated along
a lateral axis from a third end to a fourth end;

a sidewall extending away from the principal surface;
a support feature that is provided on the base and/or the sidewall; and
one or more openings that are configured to allow condensate to flow through the one or more openings,
wherein the support feature includes two shaped features that are placed in tandem and a central ledge between the shaped
features, and wherein each of the shaped features is a crescent feature and is configured to nest one of the coil headers.

US Pat. No. 9,657,737

SCROLL COMPRESSOR WITH PRESSURIZED OIL BALANCE PISTON

TRANE INTERNATIONAL INC.,...

1. A scroll compressor, comprising:
a compressor housing;
an output stage of compression disposed within the compressor housing having an output discharge pressure, the output stage
comprising:

a first, stationary, scroll member comprising a base and a substantially spiral wrap extending from the base of the first,
stationary, scroll member; and

a second, orbiting, scroll member comprising a substantially circular base and a substantially spiral wrap extending from
the base of the second, orbiting scroll member;

a first seal disposed proximal to the outer periphery of the substantially circular base and forming an external seal between
the substantially circular base and the compressor housing;

a second seal disposed radially inward from the first seal and forming an internal seal between the substantially circular
base and the compressor housing, wherein a space between the internal seal and the external seal defines a balance piston
chamber; and

an oil passage disposed within the compressor housing and configured to receive pressurized oil from one of:
an external oil separator at the output stage discharge pressure; and
an oil source at an intermediate discharge pressure less than the output stage discharge pressure, and
the oil passage configured to deliver the received pressurized oil to the balance piston chamber, such that thrust loading
on the substantially circular base caused by an axial pressure differential across the substantially circular base is reduced
in response to the received pressurized oil in the balance piston chamber.

US Pat. No. 9,513,038

REFRIGERANT COOLING AND LUBRICATION SYSTEM WITH REFRIGERANT SOURCE ACCESS FROM AN EVAPORATOR

TRANE INTERNATIONAL INC.,...

1. A heating, ventilation, air conditioning (HVAC) unit for an HVAC system comprising:
a compressor having a motor and a drive;
a condenser fluidly connected to the compressor;
an evaporator fluidly connected to the condenser;
a unit controller;
a refrigerant cooling and lubrication assembly that comprises:
a condenser source line fluidly connected to the condenser,
an evaporator source line fluidly connected to the evaporator,
a refrigerant pump line fluidly connected to the condenser source line and fluidly connected to the evaporator source line,
the condenser source line and the evaporator source line feed into the refrigerant pump line, the refrigerant pump line is
fluidly connected to at least one of the motor and the drive of the compressor,

a refrigerant pump located on the refrigerant pump line, the refrigerant pump having an inlet and an outlet fluidly connected
with the refrigerant pump line,

a flow control device disposed on the condenser source line, the flow control device disposed on the condenser source line
having an open state and a closed state, and

a flow control device disposed on the evaporator source line, the flow control device disposed on the evaporator source line
having an open state and a closed state; and

an evaporator access disposed proximate a lower portion of the evaporator and fluidly connected to an outlet of the evaporator,
the evaporator access is fluidly connected to the refrigerant cooling and lubrication assembly through the evaporator source
line,

wherein during a startup condition of the compressor the unit controller is configured to activate the flow control device
disposed on the condenser source line to the closed state, where the flow control device disposed on the condenser source
line in the closed state is configured to decouple the condenser from the refrigerant cooling and lubrication assembly, and
the unit controller is configured to activate the flow control device disposed on the evaporator source line to an open state,
the evaporator source line configured to direct a flow of refrigerant from the evaporator access of the evaporator to the
refrigerant cooling and lubrication assembly.

US Pat. No. 10,047,983

REDUCED POWER HEAT PUMP STARTING PROCEDURE

Trane International Inc.,...

1. A heating, ventilation, and/or air conditioning (HVAC) system, comprising:a first component comprising a first startup power requirement for operating the first component according to a timing sequence;
a second component comprising a second startup power requirement for operating the second component according to the timing sequence;
an auxiliary power source comprising a generator, wherein the auxiliary power source is configured to selectively provide a first electrical power to the first component at a first time period and the first electrical power to the second component at a second time period, wherein the second time period is later than the first time period;
a controller configured to selectively trigger providing the first electrical power from the auxiliary power source to each of the first component and the second component according to the timing sequence; and
an uninterrupted power source comprising a battery, wherein the uninterrupted power source is configured to provide a second electrical power to the controller prior to the auxiliary power source providing the first electrical power to each of the first component and the second component,
wherein the first startup power requirement and the second startup power requirement comprise a total startup power requirement that is greater than the power capacity of the auxiliary power source, and
wherein the auxiliary power source is configured to wait a predetermined period of time between the first time period and the second time period to stabilize a voltage output at the auxiliary power source prior to providing the first electrical power to each of the first component and the second component.

US Pat. No. 9,939,795

DYNAMIC SIMULATED MOTOR FOR CONTROLLER TESTING

Trane International Inc.,...

9. A method, comprising:generating, with a control unit, control signals configured to control a variable frequency drive;
simulating operation of the variable frequency drive and the load with a simulator;
receiving, at the simulator, the control signals from the control unit;
determining simulated inverter output voltages based on the control signals;
determining simulated output currents based on a simulation mode that uses the simulated inverter output voltages;
generating simulated operational data that includes the simulated inverter output voltages and the simulated output current;
providing the simulated operational data to the control unit; and
controlling operation of the simulator and the control unit with a computer configured to provide simulation parameters to the control unit and provide output commands to the control unit;
processing the simulation parameters and the control signals to simulate a DC bus voltage of the variable frequency drive and the simulated operational data include a simulated DC bus voltage.

US Pat. No. 9,939,181

MICRO-COMBINED HEAT AND POWER HEAT PUMP DEFROST PROCEDURE

Trane International Inc.,...

1. A defrost mode for a heat pump heating, ventilation, and/or air conditioning (HVAC) system, comprising:a refrigerant circuit comprising a heat exchanger, wherein the heat exchanger is configured to receive a refrigerant in a first flow direction in the refrigerant circuit while operating the HVAC system in a heating mode;
a generator coupled to the refrigerant circuit through a generator fluid circuit, wherein the generator is configured to produce heat as a function of operating the generator;
a recovery heat exchanger coupled to the generator and the heat exchanger and configured to receive at least a portion of the heat from the generator through the generator fluid circuit;
an exhaust vent in fluid communication with an exhaust of the generator and configured to receive heated exhaust air from the generator,
a controller coupled to each of the generator and the HVAC, wherein the controller is configured to:
operate the HVAC system in the defrost mode, wherein the defrost mode comprises operating the HVAC system in the heating mode;
selectively divert the heated exhaust air from the generator to the heat exchanger;
provide at least the portion of the heat from the generator to the recovery heat exchanger through the generator fluid circuit while reducing a restriction of flow of the refrigerant provided by a refrigerant restriction device to the heat exchanger; and
reduce an airflow across the heat exchanger to increase a rate of heat transfer from the refrigerant to a frozen condensate in contact with the heat exchanger while continually providing heat to an indoor area conditioned by the HVAC system.

US Pat. No. 9,818,288

HVAC SYSTEM WITH VISITOR PRESENCE SENSOR

Trane International Inc.,...

1. A heating, ventilation, and/or air conditioning (HVAC) system, comprising:
a visitor presence sensor associated with a location;
an HVAC system controller comprising a visitor presence indicator, the HVAC system controller associated with a first zone
conditioned by the HVAC system; and

an HVAC zone device comprising a visitor presence indicator, the HVAC device associated with a second zone conditioned by
the HVAC system;

wherein the HVAC system controller is configured to control operation of the HVAC system, wherein the HVAC zone device is
configured to communicate with the HVAC system controller to provide feedback to the HVAC system controller regarding environmental
conditions of the second zone, wherein the visitor presence sensor is located remotely from each of the visitor presence indicators
of the HVAC system controller and the HVAC zone device, and wherein each of the HVAC system controller and the HVAC zone device
is configured to display at least one of a visual image and a video on the visitor presence indicators of each of the HVAC
system controller and the HVAC zone device in response to receiving a signal from the visitor presence sensor that a visitor
is present at the location associated with the visitor presence sensor.

US Pat. No. 9,746,228

METHODS AND SYSTEMS FOR CONTROLLING A CHILLER SYSTEM HAVING A CENTRIFUGAL COMPRESSOR WITH A VARIABLE SPEED DRIVE

TRANE INTERNATIONAL INC.,...

1. A method for controlling a chiller system that includes a centrifugal compressor with a variable speed drive, a chiller
control unit and one or more inlet guide vanes, the method comprising:
the chiller control unit receiving first measurement data and second measurement data, wherein the second measurement data
includes a condenser entering water temperature data and a condenser refrigerant pressure data;

a capacity control component of the chiller control unit determining a desired chiller capacity based on the first measurement
data, wherein the desired chiller capacity is indicative of a load demanded on the chiller system; and

a multi-actuator control component of the chiller control unit determining a centrifugal compressor speed and an inlet guide
vane position based on the second measurement data;

determining a normalized chiller capacity based on the desired chiller capacity; determining a normalized centrifugal compressor
speed based on the centrifugal compressor speed;

determining a pressure coefficient that represents a static pressure and a kinetic energy of the centrifugal compressor;
determining an inflection point based on the normalized chiller capacity, the normalized centrifugal compressor speed, and
the pressure coefficient;

determining an adjusted centrifugal compressor speed and an adjusted inlet guide vane position based on the normalized chiller
capacity, the normalized centrifugal compressor speed and the pressure coefficient;

wherein the chiller control unit generates a compressor speed command and an inlet guide vane command based on the adjusted
centrifugal compressor speed and the adjusted inlet guide vane position; and

sends the compressor speed command to the variable speed drive of the centrifugal compressor and the inlet guide vane command
to the centrifugal compressor to control the one or more inlet guide vanes; and

wherein determining the adjusted centrifugal compressor speed and the adjusted inlet guide vane position includes:
determining whether the desired chiller capacity is greater than the inflection point;
adjusting the centrifugal compressor speed to achieve the desired chiller capacity and setting the inlet guide vane position
to a fully open inlet guide vane position when the desired chiller capacity is greater than the inflection point; and

adjusting both the inlet guide vane position and the centrifugal compressor speed to obtain the desired chiller capacity when
the desired chiller capacity is not greater than the inflection point.

US Pat. No. 9,696,046

MODULAR AIR HANDLING UNIT

Trane International Inc.,...

1. An air handling unit, comprising:
a first modular cabinet comprising a first profile; and
a second modular cabinet comprising a second profile that is complementary to the first profile;
wherein the first profile comprises a first sloped surface disposed between a first inner wall of the first modular cabinet
and a first outer wall of the first modular cabinet;

wherein the second profile comprises a second sloped surface disposed between a second inner wall of the second modular cabinet
and a second outer wall of the second modular cabinet;

wherein the first sloped surface is fixed with respect to the first inner wall and the first outer wall and is oriented at
a first sloped angle with respect to the first inner wall;

wherein the second sloped surface is fixed with respect to the second inner wall and the second outer wall and is oriented
at a second sloped angle with respect to the second outer wall;

wherein the first sloped angle is substantially similar to the second sloped angle;
wherein the first profile and the second profile are configured to allow at least one of (1) a forward-backward misalignment
and (2) a right-left misalignment of the first modular cabinet relative to the second modular cabinet when the first profile
and the second profile at least partially longitudinally overlap; and

wherein when the first profile at least partially overlaps the second profile in response to moving the first modular cabinet
longitudinally towards the second modular cabinet, the second sloped surface is configured to interact with the first sloped
surface by contacting the first sloped surface to properly align the first modular cabinet with the second modular cabinet
such that the first sloped surface mates with the second sloped surface when the first modular cabinet and the second modular
cabinet are properly aligned.

US Pat. No. 9,651,321

METHODS OF CONTROLLING FAN CAPACITY AND COIL CAPACITY IN HVAC SYSTEMS

TRANE INTERNATIONAL INC.,...

13. A method for controlling a heating, ventilation, and air conditioning (“HVAC”) system with a three-speed discharge fan
with a low speed setting, an intermediate speed setting and a high speed setting, comprising:
maintaining a discharge fan capacity at a low fan capacity setting and varying a coil discharge air temperature between a
low discharge air temperature limit and a high discharge air temperature limit; and

when the coil discharge air temperature reaches the low discharge air temperature limit and the discharge fan capacity required
to maintain a space temperature at a space temperature setpoint is higher than the low fan capacity setting, varying a discharge
fan speed of the three-speed discharge fan between the low speed setting and the intermediate speed setting while maintaining
the discharge coil temperature at the low discharge air temperature limit,

when the coil discharge air temperature reaches the low discharge air temperature limit and the discharge fan capacity required
to maintain the space temperature at the space temperature setpoint is higher than the intermediate fan capacity setting,
varying the discharge fan speed of the three-speed discharge fan between the intermediate speed setting and the high speed
setting while maintaining the coil discharge air temperature at the low discharge air temperature limit.

US Pat. No. 9,634,538

TERMINAL ASSEMBLY FOR REFRIGERATION COMPRESSOR

TRANE INTERNATIONAL INC.,...

1. A terminal assembly for conducting current from an external power source to a hermetical motor-compressor unit of a refrigeration
system, comprising:
a terminal board;
an opening defined through the thickness of the terminal board;
a conductive pin received in the opening; and
an insulator having a convoluted contour, the insulator being disposed over the conductive pin and spaced away from the terminal
board,

wherein the convoluted contour of the insulator has a back and forth lengthened path,
wherein the insulator has an inner radial wall defining an insulator opening, an outer radial wall and an annular recess defined
between the inner and outer radial walls, the insulator opening being sized to receive the conductive pin,

wherein the annular recess forms the convoluted contour of the insulator,
wherein the conductive pin is configured to be insulated from the terminal board partially by refrigerant,
wherein the inner radial wall and the outer radial wall both form at least part of the convoluted contour of the insulator;
a bottom surface of the inner radial wall and a bottom surface of the outer radial wall share a same plane, and a top surface
of the inner radial wall and a top surface of the outer radial wall share a same plane; the two planes being positioned parallel
from each other, and

wherein a gap is formed between the terminal board and a bottom surface of the insulator such that a side surface of a section
of the conductive pin positioned between the terminal board and the bottom surface of the insulator is exposed to the refrigerant.

US Pat. No. 9,605,859

AUTOMATED AIR SOURCE AND VAV BOX ASSOCIATION

Trane International Inc.,...

1. A computerized method of determining which of a plurality of variable air-volume boxes are physically associated with a
space in a structure, the method comprising:
communicatively coupling each of the plurality of variable air-volume boxes to a building automation system controller, wherein
the building automation system controller is configured to independently actuate a damper operably coupled to each of the
plurality of variable air-volume boxes;

communicatively coupling a sensor proximate to each of the plurality of variable-air-volume boxes with the building automation
system controller, wherein building automation system controller is configured to receive a data sample from the sensor;

causing the building automation system controller to record a pre-baseline data sample from each sensor before the damper
operably coupled to the one of the plurality of variable air-volume boxes corresponding to the sensor has been actuated;

causing the building automation system controller to actuate the damper operably coupled to at least one of the plurality
of variable air-volume boxes;

causing the building automation system controller to record a baseline data sample from each sensor after the damper operably
coupled to the one of the plurality of variable air-volume boxes corresponding to the sensor has been actuated; and

causing the building automation system controller to correlate the baseline data sample with the pre-baseline data sample
to determine which of the plurality of variable air-volume boxes are physically associated with the space in the structure,
and, in response, causing the building automation system controller to record the association of the space with the individual
one of the plurality of variable air-volume boxes.

US Pat. No. 10,036,386

STRUCTURE FOR STABILIZING AN ORBITING SCROLL IN A SCROLL COMPRESSOR

TRANE INTERNATIONAL INC.,...

7. A scroll compressor, comprising:an output stage of compression disposed within a compressor housing, the output stage comprising:
a first, stationary, scroll member comprising a base and a spiral wrap extending from the base of the first, stationary, scroll member; and
a second, orbiting, scroll member comprising a base and a spiral wrap extending from the base of the second, orbiting, scroll member;
a coupling disposed between the base of the first, stationary, scroll member and the base of the second, orbiting, scroll member and in surrounding relationship to the spiral wrap of the first, stationary, scroll member and the spiral wrap of the second, orbiting, scroll member;
an orbiting scroll hydrostatic thrust bearing configured to limit thrust loading on the base of the second, orbiting, scroll member; and
at least one protrusion disposed between the base of the first, stationary, scroll member and the base of the second, orbiting, scroll member and in axial thrust force relationship with the coupling to at least partially prevent tipping of the second, orbiting, scroll member, wherein a gap is maintained between the at least one protrusion and the first, stationary, scroll member, or between the at least one protrusion and the second, orbiting, scroll member.

US Pat. No. 10,001,302

PHASE CHANGE COMPRESSOR COVER

Trane International Inc.,...

1. A compressor cover, comprising:a first layer comprising:
a first layer outer surface,
a first layer inner surface, and
a first layer base;
a second layer comprising:
a second layer outer wall comprising a second layer outer wall outer surface and a second layer outer wall inner surface,
a second layer inner wall comprising a second layer inner wall outer surface and a second layer inner wall inner surface, and
a second layer base comprising a second layer base outer surface and a second layer base inner surface; and
a refrigerant discharge line,
the refrigerant discharge line is configured to connect in fluid communication with a compressor and configured to carry refrigerant from the compressor and beyond the first layer outer surface,
the refrigerant discharge line is configured to wind helically around the compressor between the compressor and the second layer inner wall inner surface;
wherein the second layer outer wall inner surface, the second layer inner wall outer surface, and the second layer base inner surface form a second layer cavity, and
wherein the second layer cavity comprises a phase change material.

US Pat. No. 9,995,509

CASCADING HEAT RECOVERY USING A COOLING UNIT AS A SOURCE

TRANE INTERNATIONAL INC.,...

1. A heating, ventilation, and air conditioning (HVAC) system, comprising:a cooling unit including a cooling condenser in fluid communication with an evaporator, and a recovery condenser in fluid communication with the evaporator, the cooling unit is configured to deliver cooling to a cooling load by way of a heat exchange relationship of the evaporator of the cooling unit with one or more of the cooling condenser and the recovery condenser, the recovery condenser configured as a heat source;
a heating unit including an evaporator in fluid communication with a heating condenser, the heating unit configured to deliver heating to a heating load by way of a heat exchange relationship of the evaporator of the heating unit with the heating condenser, the evaporator of the heating unit is fluidly connected to a cooling loop of the cooling unit, by way of a fluid connection upstream of the evaporator of the cooling unit,
the cooling unit and the heating unit are configured to have a heat recovery circuit configured to transfer a source heat from the cooling unit to the heating unit, the heating unit receiving the source heat from the cooling unit by way of the evaporator of the heating unit having fluid communication with the cooling unit,
a controller configured to control the heat recovery cycle of the HVAC system to use the heat recovery circuit 1) through a fluid connection of the recovery condenser with the evaporator of the heating unit or 2) through a fluid connection of the cooling loop with the evaporator of the heating unit, the controller selecting to source heat from the fluid connection of the cooling loop with the evaporator of the heating unit based on an operating system condition in which the cooling load of the cooling unit is relatively low,
wherein the heat recovery circuit comprises the evaporator of the heating unit fluidly connected to the recovery condenser of the cooling unit, the heat recovery circuit configured to transfer source heat from the recovery condenser to the evaporator of the heating unit, the heat recovery circuit to transfer the source heat from the cooling unit to the heating unit is isolated from the cooling condenser, and the heat recovery circuit is configured to deliver source heat from the recovery condenser to the evaporator of the heating unit, the heat recovery circuit is configured to transfer source heat from the cooling loop to the evaporator of the heating unit, and
the HVAC system is configured to operate in one or more of a cooling mode, a heating mode, and a heat recovery cycle.

US Pat. No. 9,903,663

BRAZED HEAT EXCHANGER WITH FLUID FLOW TO SERIALLY EXCHANGE HEAT WITH DIFFERENT REFRIGERANT CIRCUITS

TRANE INTERNATIONAL INC.,...

1. A brazed heat exchanger apparatus, comprising:
a first brazed heat exchanger including
a working fluid inlet in fluid communication with working fluid flow channels,
a first heat exchanger fluid inlet in fluid communication with first heat exchanger fluid flow channels, the first heat exchanger
fluid flow channels in fluid communication with a first heat exchanger outlet,

the first heat exchanger fluid inlet, fluid flow channels, and outlet are configured to allow fluid flow of a first heat exchange
fluid into and out of the first brazed heat exchanger,

the working fluid channels are configured relative to the first heat exchanger fluid flow channels so that the working fluid
flowing through the working fluid flow channels exchanges heat with the first heat exchange fluid flowing through the first
heat exchanger fluid channels;

one or more internal routing channels in fluid communication with the working fluid flow channels of the first brazed heat
exchanger;

a second brazed heat exchanger connected with the first brazed heat exchanger,
the second brazed heat exchanger includes
working fluid flow channels in fluid communication with the one or more internal routing channels,
a second heat exchanger fluid inlet in fluid communication with second heat exchanger fluid flow channels, the second heat
exchanger fluid flow channels in fluid communication with a second heat exchanger outlet,

the second heat exchanger fluid inlet, fluid flow channels, and outlet are configured to allow fluid flow of a second heat
exchange fluid into and out of the second brazed heat exchanger,

the working fluid channels of the second brazed heat exchanger are configured relative to the second heat exchanger fluid
flow channels so that the working fluid flowing through the working fluid flow channels exchanges heat with the second heat
exchange fluid flowing through the second heat exchanger fluid channels,

wherein an internal flow path of the apparatus includes the working fluid flow channels of the first brazed heat exchanger,
the one or more internal routing channels, and the working fluid flow channels of the second brazed heat exchanger,

the internal flow path configured so that the working fluid exchanges heat serially first through the first brazed heat exchanger
and then through the second brazed heat exchanger, and

wherein the one or more internal routing channels are connected to the working fluid flow channels of the first brazed heat
exchanger at a position longitudinally opposite where the one or more internal routing channels are connected to the working
fluid flow channels of the second brazed heat exchanger.

US Pat. No. 9,851,160

MOUNTING ASSEMBLY FOR HEAT EXCHANGER COIL

TRANE INTERNATIONAL INC.,...

1. A mounting assembly for mounting a multi-row heat exchanger coil to a desired wall surface, wherein the multi-row heat
exchanger coil including a first row of coil, a second row of coil, a bent portion that fluidly communicates the first and
second rows of coil to each other, an interior space formed between the first and second rows of coil and an attachment side
where the mounting assembly is attached, the mounting assembly comprising:
a plurality of spaced apart connection members disposed along a side of the multi-row heat exchanger coil, each of the plurality
of spaced apart connection members having first and second ends opposite to each other, with the first end attached directly
to an outermost tube of the first row of coil and the second end attached directly to an outermost tube of the second row
of coil, thereby securing the first and second rows of coil to each other;

a mounting member configured to prevent airflow from exiting from the interior space at an attachment side; and
fastening mechanism configured to attach the mounting member to each of the plurality of spaced apart connection members.

US Pat. No. 9,823,005

METHODS AND SYSTEMS FOR DETECTING AND RECOVERING FROM CONTROL INSTABILITY CAUSED BY IMPELLER STALL

TRANE INTERNATIONAL INC.,...

1. A method for detecting and recovering from control instability caused by impeller stall in a chiller system that includes
a centrifugal compressor, a chiller control unit and one or more inlet guide vanes, the method comprising:
calculating a chiller control error signal based on a chilled water set point temperature signal, an evaporator leaving water
temperature signal, a design delta temperature signal that is indicative of a design delta temperature across an evaporator
of the chiller system and a lift compensation signal, wherein calculating the chiller control error signal includes using
a leaving water temperature control algorithm;

determining a frequency spectrum of the chiller control error signal to obtain a controller error signal frequency spectrum
signal, wherein the frequency spectrum of the chiller control error signal is determined using a fast Fourier transform algorithm;

detecting, via the chiller control unit, whether an impeller stall event has occurred based on the controller error signal
frequency spectrum signal;

restoring stable operation of the centrifugal compressor when an impeller stall event is detected.

US Pat. No. 9,817,378

HVAC CONTROLLER INTERFACE DEVICE

Trane International Inc.

1. A Heating, Ventilation, and Air Conditioning (HVAC) system comprising:
a controller enclosed in a housing and operably coupled to an enclosure, the controller to control at least the operation
of at least one component of the HVAC system; and

a controller interface device to be displaced between a mounted position and an unmounted position, the controller interface
device being securely mounted to the enclosure when in the mounted position, the controller interface device being displaced
away from the enclosure when in the unmounted position, and wherein the controller interface device is to receive communications
from the controller relating to an aspect of the HVAC system at least when the controller interface device is in the unmounted
position; and

a mounting device having a first retainer member, a second retainer member, a first mount, and a second mount, the first retainer
member coupled to a first side of the housing, the second retainer member coupled to a second side of the housing, the second
retainer member to receive the second mount as the controller interface device is displaced to the mounted position;

wherein the controller interface device is a handheld device, and wherein the controller interface device includes a housing,
a display, and an input device, the display to display at least information relating to the communications received by the
controller interface device from the controller.

US Pat. No. 9,817,408

VIBRATION CONTROL FOR A VARIABLE SPEED COOLING SYSTEM

TRANE INTERNATIONAL INC.,...

1. A variable speed cooling and vibration control system, comprising:
at least one variable speed motor;
a variable speed drive (VFD) for controlling the speed of at least one variable speed motor; and
one or more vibration sensors installed at one or more predetermined locations on the variable speed cooling system:
a vibration data acquisition system that acquires vibration level data associated with at least one vibration sensor, and
a programmable controller in communication with the VFD and the vibration data acquisition system, wherein the programmable
controller:

directs a VFD frequency sweep wherein the at least one variable speed motor sweeps through a range of frequencies;
determines one or more frequency lockout bands, based on the vibration level data from the vibration data acquisition system
and variable speed cooling system vibration specification data, and

commands the VFD to operate the at least one variable speed motor at one or more frequencies outside the one or more frequency
lockout bands.

US Pat. No. 9,803,934

REFRIGERANT OUTLET DEVICE OF A CONDENSER

TRANE INTERNATIONAL INC.,...

1. A refrigerant outlet of a heat exchanger, comprising:
an outflow pipe;
an outer wall surrounding the outflow pipe, an outside surface of the outflow pipe and the outer wall define an annular weir
surrounding the outflow pipe; and

a single port on the outer wall in fluid communication with the annular weir to direct liquid lubricating refrigerant out
of the annular weir and through the port to provide lubrication to a compressor;

wherein the annular weir has a bottom, the port has a lowest point, and the lowest point of the port is positioned higher
than the bottom of the annular weir,

the outflow pipe has a first end and a second end, the annular weir has an opening in fluid communication with the port, and
the first end of the outflow pipe is positioned higher than the opening of the annular weir.

US Pat. No. 9,638,433

SYSTEM AND METHOD FOR MANAGING HVAC EXCESS AIR CONDITION

Trane International Inc.,...

1. A heating, ventilation, and air conditioning (HVAC) system, comprising:
a controller;
a bypass duct configured to selectively receive a bypass airflow therethrough; and
a bypass damper associated with the bypass duct, wherein the controller is configured to selectively modulate the bypass damper
to increase the bypass airflow through the bypass duct in response to a supply air pressure of the HVAC system being greater
than or equal to a supply air pressure threshold value;

wherein the controller is configured to discontinue modulation of the bypass damper to lock the bypass damper in its current
position in response to a supply air temperature (1) being less than or equal to a supply air temperature threshold value
when the HVAC system is operated in a cooling mode and (2) being greater than the supply air temperature threshold value when
the HVAC system is operated in a heating mode;

wherein the controller is configured to modulate the at least one zone damper to the exclusion of the bypass damper that is
locked in its current position to increase airflow to a zone of the HVAC system in response to the supply air temperature
(1) being less than or equal to a supply air temperature threshold value of the HVAC system when the HVAC system is operated
in the cooling mode and (2) being greater than or equal to a supply air temperature threshold value while the HVAC system
is operating in the heating mode, and wherein the controller is configured to reset the at least one zone damper to a temperature
setpoint based control position and unlock the bypass damper from its current position in response to the supply air temperature(1)
exceeding the supply air temperature threshold value when the HVAC system is operated in a cooling mode and (2) being lower
than the supply air temperature threshold value when the HVAC system is operated in a heating mode.

US Pat. No. 9,605,886

AXIAL THRUST CONTROL FOR ROTARY COMPRESSORS

Trane International Inc.,...

1. A compressor system, comprising:
a rotary compressor comprising a suction port to receive fluid at a suction pressure, a plurality of axially extending rotors
to compress the fluid, and a discharge port to discharge the compressed fluid at a discharge pressure that is higher than
the suction pressure;

an electric motor configured to receive control signals and drive the plurality of rotors at a commanded speed determined
by the received control signals;

a controller including a memory connected to the controller, the memory including a starting acceleration limit, a running
acceleration limit, a running deceleration limit, and a stopping deceleration limit, the controller configured to:

receive operational signals indicative of an operating mode of the rotary compressor;
select an acceleration/deceleration limit for the rotary compressor based upon the operating mode of the rotary compressor,
wherein the acceleration/deceleration limit is based on acceleration and deceleration torques of the rotors that limit axial
movement of the rotors and the acceleration/deceleration limit is selected from the starting acceleration limit, the running
acceleration limit, the running deceleration limit, and the stopping deceleration limit based upon the operating mode of the
rotary compressor; and

generate control signals that drive the electric motor from a current speed to the commanded speed with a command signal profile
governed by the selected acceleration/deceleration limit; and

a variable frequency drive configured to receive the control signals and to drive the electric motor according to the command
signal profile.

US Pat. No. 9,595,905

REFRIGERANT COMPRESSOR DRIVES OFFERING ENHANCED ROBUSTNESS, EFFICIENCY AND RATED VOLTAGE OPERABILITY

Trane International Inc.,...

1. A method comprising:
providing a variable frequency drive configured to operate a motor to drive a refrigerant compressor using power from a power
source;

commanding operation of the drive over a first operating range to provide at least a desired operating speed and minimize
d-axis current, wherein over the first operating range the drive input voltage is greater than a first value in a rated voltage
range;

commanding operation of the drive over a second operating range including injecting d-axis current to provide at least the
desired operating speed, wherein over the second operating range the drive input voltage is lower than the first value and
greater than a second value in the rated voltage range; and

commanding operation of the drive over a third operating range at a de-rated speed less than the desired operating speed,
wherein over the third operating range the drive input voltage is lower than the second value.

US Pat. No. 9,528,781

ANTI-MICROBIAL HEAT TRANSFER APPARATUS

TRANE INTERNATIONAL INC.,...

1. An anti-microbial heat transfer apparatus comprising:
a hybrid coil having multiple rows of fins and tubes, the fins and tubes being divided into an upper portion and a lower portion,
the fins of the upper portion including copper and having a first height and the lower portion having a second height;

inside the tubes a chilled medium flows therethrough to cool a surface of the fins and tubes to be colder than a dew point
temperature of surrounding air such that when air flows across the hybrid coil, condensate is formed on the surface of the
fins,

wherein gravity causes the condensate to drip copper ions from the fins of the upper portion to the lower portion of the coil
and;

wherein the first height of the upper portion is less than the second height of the lower portion, which is determined by
an amount of condensate needed to transfer a suitable amount of copper ions from the upper portion to the lower portion of
the hybrid coil to kill and/or inhibit microbial growth on the lower portion of the hybrid coil.

US Pat. No. 10,107,506

HEAT EXCHANGER WITH DIFFERENTIATED RESISTANCE FLOWPATHS

Trane International Inc.,...

1. A heat exchanger, comprising:a finned portion; and
a first differentiated resistance flowpath comprising at least one of (1) a reduced amount of fin material in the first differentiated resistance flowpath relative to the finned portion of the heat exchanger or (2) a reduced amount of refrigerant tube material in the first differentiated resistance flowpath relative to the finned portion of the heat exchanger;
wherein the first differentiated resistance flowpath is configured to direct at least a portion of an airflow through the heat exchanger towards at least a portion of a component disposed downstream from the first differentiated resistance flowpath of the heat exchanger, and wherein the portion of the component disposed downstream from the first differentiated resistance flowpath of the heat exchanger comprises an increased heat transfer rate with the airflow as compared to other portions of the component disposed downstream from the finned portion of the heat exchanger.

US Pat. No. 10,087,954

HVAC SYSTEM WITH NOISE REDUCING TUBE

Trane International Inc.,...

1. A heating, ventilation, and/or air conditioning (HVAC) system, comprising:a fan, comprising:
a blade assembly;
a cover;
a fan component defining a radially interior space disposed radially inside and bounded by the fan component and a radially exterior space located radially beyond the fan component and within a footprint of the cover; and
a tube disposed in the radially exterior space, the tube being connected in exclusive fluid communication with the radially interior space at a first angular location and a second angular location different from the first angular location with respect to an axis of rotation of a shaft of the blade assembly, wherein the first angular location and the second angular location comprise substantially similar longitudinal locations.

US Pat. No. 10,082,315

ADAPTABLE HVAC UNIT BASE

TRANE INTERNATIONAL INC.,...

1. A base of a heating, ventilation, and air conditioning (HVAC) unit, comprising:a base plate;
a supply air duct opening through the base plate;
a return air duct opening through the base plate;
at least one additional opening designated as one of another supply air opening through the base plate and another return air duct opening through the base plate;
a surface disposed about and along a perimeter of the base plate on a bottom side of the base plate around the supply air duct opening and the return air duct opening and configured to provide a sealing engagement;
a surface disposed on the bottom side of the base plate about the supply air duct opening and configured to provide a sealing engagement;
a surface disposed on the bottom side of the base plate about the return air duct opening and configured to provide a sealing engagement;
a surface disposed on the bottom side of the base plate about the at least one additional opening and configured to provide a sealing engagement; and
a supply side/return side surface on the bottom side of the base plate disposed between the supply air duct opening and the return air duct opening and configured to provide a sealing engagement,
wherein the base plate is configured to be adaptable to multiple footprints for an HVAC unit due to the arrangement of the supply air duct opening, the return air duct opening, the at least one additional opening, and the surfaces,
the HVAC unit is a rooftop unit,
the base plate being secured to the rooftop unit along the perimeter of the base plate on a top side of the base plate, and
the surface disposed about and along the perimeter of the base plate is configured to seal between the rooftop unit and a roof curb.

US Pat. No. 9,777,944

SOUND ENCLOSURE FOR A COMPRESSOR

TRANE INTERNATIONAL INC.,...

1. A sound enclosure for a screw compressor in a heating, ventilation, and air conditioning (HVAC) system, comprising:
a first side section and a second side section that close in a clam shell configuration, a connection between the first and
second side sections extending in a longitudinal direction along a top side of the sound enclosure from a first longitudinal
end to a second longitudinal end opposite the first longitudinal end, the first side section and the second side section configured
to create a space between the first and second side sections and the screw compressor when the screw compressor is inside
the sound enclosure;

a bottom section extending in the longitudinal direction of the sound enclosure and configured to create a space between the
bottom section and the screw compressor when the screw compressor is inside the sound enclosure, the bottom section including
a plurality of apertures to accommodate a mounting mechanism for the screw compressor and to accommodate the mounting mechanism
to extend therethrough, wherein the bottom section is configured so that the bottom section does not contact the screw compressor
directly; and

one or more end plugs that plug or cover the first and second longitudinal ends of the sound enclosure,
wherein the sound enclosure is configured to radially surround the screw compressor to impede operational sound emitted radiantly
by the screw compressor,

wherein the sound enclosure has a length and a height, the length being larger than the height, and the sound enclosure configured
to accommodate the screw compressor having a horizontally positioned crankshaft,

wherein a variable surface contour of the first side section and a variable surface contour of the second side section are
designed to follow a variable profile of the screw compressor, the variable surface contours being configured so that the
first side section and the second side section maintain a relatively constant distance from an outline of the variable profile
of the screw compressor when installed, and

the bottom section includes a portion extending toward a top side of the screw compressor such that, in a fastened configuration,
the first and second side sections are fastened to the bottom section and radially surround the screw compressor, wherein
the portion of the bottom section is disposed on an outer side of the first and second side sections.

US Pat. No. 10,128,788

INCREASING COMPONENT LIFE IN A VARIABLE SPEED DRIVE WITH STATOR HEATING

Trane International Inc.,...

1. An electric drive system for heating motor stator windings, comprising:a direct current power source;
two or more power supply transistors;
two or more power return transistors; and
a control unit that switches on a first one of the two or more power supply transistors and at least one of the two or more power return transistors during a heating demand event to supply direct current from the direct current power source to the motor stator windings;
wherein the control unit compares a wear metric of each power supply transistor for the heating demand event and switches on one power supply transistor from the two or more power supply transistors having the lowest wear metric for the heating demand event.

US Pat. No. 10,094,606

WATER TEMPERATURE SENSOR IN A BRAZED PLATE HEAT EXCHANGER

TRANE INTERNATIONAL INC.,...

1. A control method involving a temperature sensor disposed within a heat exchanger that conveys a refrigerant and water, the water having an atmospheric freezing point temperature at atmospheric pressure, the control method comprising:defining a lower temperature limit that is below the atmospheric freezing point temperature;
sensing the temperature of the water within the heat exchanger using the temperature sensor, the temperature sensor extending into at least one passage within the heat exchanger, the temperature sensor being positioned at a target point, wherein the water at the target point is colder than the water at an inlet of the heat exchanger, the target point having a lower flow rate of water than the water inlet;
providing a feedback signal from the temperature sensor that is responsive to the temperature of the water;
conveying the feedback signal to a controller; and
in response to the feedback signal, the controller distinguishing between an acceptable operation and an unacceptable operation,
the unacceptable operation being the temperature of the water being below the lower temperature limit,
the acceptable operation being the temperature of the water being above the lower temperature limit.

US Pat. No. 9,914,134

SYSTEMS AND METHODS FOR CLEANING AIR

Trane International Inc.,...

1. An air cleaning system, comprising:
a field charger, the field charger comprising:
a plurality of bars each comprising an octagonal profile and conductively connected to form a conductive inner core, wherein
the conductive inner core comprises a non-conductive overmold molded over the conductive inner core; and

a plurality of pins embedded at least partially within and conductively connected to the conductive inner core and extending
at least partially out of the non-conductive overmold;

at least one collection cell; and
a cabinet operable to house the field charger and the at least one collection cell.

US Pat. No. 9,743,315

METHOD OF FRAGMENTING A MESSAGE IN A NETWORK

TRANE INTERNATIONAL INC.,...

13. A method of sending a message in a packet-based network, comprising:
determining an available space in a first packet;
determining a fragmented message size for fragmenting the message, wherein the fragmented message size is smaller by a number
of bytes than the available space and the number of bytes corresponds to additional nodes in the packet-based network;

fragmenting the message into at least one numbered fragmented message, each of the at least one numbered fragmented message
has the fragmented message size;

assembling a first fragmented message of the at least one numbered fragmented message into the first packet;
sending the first packet over the network;
receiving the first packet sent over the network;
performing source routing in the network with respect to the received packet;
updating the network header of the first packet to obtain a later packet; and
sending the later packet over the network,
wherein the first packet includes a free space, and at least a portion of the free space is occupied in the later packet.

US Pat. No. 9,759,446

AIR HANDLING UNIT WITH INTEGRAL INNER WALL FEATURES

Trane International Inc.,...

1. An air handling unit, comprising:
a first interior wall comprising:
a first integral rail and a second integral rail, wherein each of the first integral rail and the second integral rail protrude
from the first interior wall towards an interior space of the air handling unit, wherein the first interior wall is fixed
relative to the air handling unit, and wherein the first integral rail and the second integral rail are fixed relative to
the first interior wall; and

a first mounting channel that is open toward the interior space and that is configured to selectively slidably receive a removable
component of the air handling unit; and

a second interior wall disposed opposite of the first interior wall and comprising:
a third integral rail and a fourth integral rail, wherein each of the third integral rail and the fourth integral rail protrude
from the second interior wall towards the interior space of the air handling unit, wherein the second interior wall is fixed
relative to the air handling unit, and wherein the third integral rail and the fourth integral rail are fixed relative to
the second interior wall; and

a second mounting channel that is open toward the interior space and that is configured to selectively slidably receive the
removable component of the air handling unit;

wherein the first integral rail, the second integral rail, and the first mounting channel of the first interior wall form
at least a portion of the fluid duct through the air handling unit, wherein the first mounting channel is bound by the first
integral rail on an upstream side and bound by the second integral rail on a downstream side with respect to a primary airflow
direction through the air handling unit such that the first integral rail and the second integral rail retain the removable
component within the first mounting channel by receiving a complementary shaped structure of the removable component within
the first mounting channel and retaining the complementary shaped structure of the removable component within the first mounting
channel with the first integral rail and the second integral rail; and

wherein the third integral rail, the fourth integral rail, and the second mounting channel form at least a portion of the
fluid duct through the air handling unit, wherein the second mounting channel is bound by the third integral rail on an upstream
side and bound by the fourth integral rail on a downstream side with respect to a primary airflow direction through the air
handling unit such that the third integral rail and the fourth integral rail retain the removable component within the second
mounting channel by receiving a second complementary shaped structure of the removable component within the second mounting
channel and retaining the second complementary shaped structure of the removable component within the second mounting channel
with the third integral rail and the fourth integral rail.

US Pat. No. 9,638,445

OIL RETURN MANAGEMENT IN A HVAC SYSTEM

TRANE INTERNATIONAL INC.,...

1. A HVAC system, comprising:
a condenser;
an evaporator;
a compressor; and
an oil return heat exchanger;
wherein the oil return heat exchanger has an evaporator side configured to receive an refrigerant/oil mixture from the evaporator
and a condenser side configured to receive superheat refrigerant vapor from the condenser, and the evaporator side and the
condenser side are configured to exchange heat in the oil return heat exchanger, and wherein the refrigerant/oil mixture from
the evaporator side is directed to the compressor after flowing out of the oil return heat exchanger.

US Pat. No. 9,568,208

HVAC ELECTRICAL SYSTEM POWER SUPPLY PACKAGING SYSTEM

TRANE INTERNATIONAL INC.,...

1. A heating, ventilation and air conditioning (HVAC) electrical system power supply packaging system comprising:
an ultimate enclosure cabinet housing including:
a low voltage compartment including a low voltage component configured to use non-hazardous low voltage power;
a high voltage compartment including a high voltage component configured to use hazardous high voltage power;
a partition configured to physically separate the low voltage component from the high voltage component;
a transparent barrier provided in front of at least one of the low voltage compartment and the high voltage compartment, wherein
the transparent barrier is configured to allow a visible indicator for monitoring at least one of the low voltage component
and the high voltage component to be viewed external to the ultimate enclosure cabinet housing;

a motor provided in the high voltage compartment as the high voltage component; and
a variable frequency drive (VFD) configured to drive the motor, the VFD provided in a VFD enclosure,
wherein the low voltage compartment includes low voltage circuitry and the high voltage compartment includes high voltage
circuitry that is electrically isolated from the low voltage circuitry,

wherein the VFD includes a first portion located on a low voltage side of the VFD that includes VFD low voltage circuitry
and a second portion located on a high voltage side of the VFD that includes VFD high voltage circuitry, and

wherein the ultimate enclosure cabinet housing is configured to allow service personnel to access the low voltage component
in the low voltage compartment without being exposed to hazardous high voltage power;

a utility power supply that supplies hazardous high voltage power to the high voltage compartment; and
an external low voltage supply external to the ultimate enclosure cabinet housing and separate from the utility power supply,
wherein the external low voltage supply supplies low voltage power to only the low voltage circuitry when hazardous high voltage
power is not present for supplying power to the high voltage compartment.

US Pat. No. 9,556,875

CENTRIFUGAL COMPRESSOR ASSEMBLY AND METHOD

TRANE INTERNATIONAL INC.,...

1. A compressor assembly for compressing a refrigerant in a chiller system comprising:
a. a centrifugal compressor having a 250-ton capacity or larger, said centrifugal compressor having a compressor housing with
a compressor inlet for receiving the refrigerant and a compressor outlet for delivering the refrigerant;

b. a shaft;
c. an impeller in fluid communication with said compressor inlet and said compressor outlet, said impeller mounted to said
shaft and being operable to compress refrigerant; and

d. a direct drive, variable speed, permanent magnet motor for directly driving the shafts; and
e. a variable speed drive configured to vary a speed of operation of the direct drive, variable speed, permanent magnet motor,
wherein the speed of operation is expressed as Ns=RPM*sqrt(CFM/60)/?His3/4, where RPM is the revolutions per minute, CFM is the volume of fluid flow in cubic feet per minute, ?H is is a change in isentropic head rise in British thermal units per pound (BTU/lb), and the speed of operation is selected to
be in a range of about 95 to about 180.

US Pat. No. 10,082,314

SOUND ENCLOSURE FOR A COMPRESSOR

TRANE INTERNATIONAL INC.,...

6. A chiller system, comprising:a screw compressor;
a frame;
a sound enclosure configured to enclose the screw compressor, the sound enclosure having longitudinal end openings in each end of the sound enclosure in a longitudinal direction, the longitudinal direction extending along a length of the sound enclosure and being about parallel to a refrigerant flow direction through the screw compressor, the length being larger than a height and a width of the sound enclosure, the length being a major dimension of the sound enclosure and extending from a first of the longitudinal end openings to a second of the longitudinal end openings; and
refrigerant lines coupled to the screw compressor through the end openings;
wherein the screw compressor is supported by a mounting mechanism to the frame, the mounting mechanism extends through an aperture of a bottom section of the sound enclosure and is secured to the screw compressor, the bottom section configured so that the bottom section does not contact the screw compressor directly.

US Pat. No. 10,048,025

CAPACITY MODULATING AN EXPANSION DEVICE OF A HVAC SYSTEM

TRANE INTERNATIONAL INC.,...

1. A heat exchanger, comprising:a header;
a plurality of flattened tubes configured to form fluid communication with the header; and
a capacity modulating assembly connected to the header,
wherein the capacity modulating assembly is configured to modulate capacity according to a refrigerant flow rate, and includes a plurality of expansion devices and a first flow control device connected to at least one of the plurality of expansion devices,
wherein each of the plurality of expansion devices is configured to expand refrigerant at a refrigerant flow rate different from each other;
wherein each of the plurality of expansion devices has a terminating end and are separate from each other, and each of the plurality of expansion devices extends in a longitudinal direction of the header, and
wherein the first flow control device has an open state and a closed state, the closed state is configured to restrict refrigerant to the at least one of the plurality of expansion devices, and the open state is configured to allow refrigerant to flow to the at least one of the plurality of expansion devices.

US Pat. No. 9,945,391

DIFFUSER COLLAR

TRANE INTERNATIONAL INC.,...

1. A fan assembly for a condenser fan of a heating, ventilation, and air conditioning (HVAC) system, comprising:an impeller including a plurality of blades, each of the blades including a blade tip, the impeller having an impeller diameter;
a duct configured to receive an outflow provided by the impeller, the duct having a duct exit diameter that is larger than the impeller diameter; and
a diffuser collar extending from the blade tips of the impeller on an outflow side of the impeller toward a duct exit and configured and arranged to radially expand the outflow provided by the impeller, the diffuser collar having a first diameter at a first edge disposed at the blade tips of the impeller on the outflow side of the impeller and a contour extending from the first edge toward a second edge having a second diameter, the second edge disposed a distance from the impeller,
wherein the first diameter is smaller than the second diameter, the first and second diameters are smaller than the duct exit diameter, and the first diameter is smaller than the impeller diameter, such that during operation, the impeller rubs away a portion of the diffuser collar.

US Pat. No. 9,933,176

LATENT CAPACITY ADJUSTMENT

Trane International Inc.,...

1. A method of operating a heating, ventilation, and air conditioning (HVAC) system, comprising:providing an HVAC comprising a humidity sensor and a multi-speed blower;
initiating a cooling cycle of the HVAC system;
starting a timer concurrently with the initiation of the cooling cycle;
setting a speed of the multi-speed blower upon initiation of the cooling cycle based on a comparison of a humidity level sensed by the humidity sensor at the beginning of the cooling cycle and a humidity threshold; and
preventing the multi-speed blower from changing speeds until the timer expires, wherein a speed of the multi-speed blower is allowed to change after the timer expires;
changing the speed of the multi-speed blower in response to the humidity level crossing the humidity threshold after the timer has expired;
restarting the timer concurrently with changing the speed of the multi-speed blower; and
preventing the multi-speed blower from changing speeds until the restarted timer expires.

US Pat. No. 10,162,319

SYSTEM AND METHOD FOR CONFIGURING A SCHEDULE

Trane International Inc.,...

1. A method, comprising:configuring an automated schedule with a graphical user interface (GUI); and
synchronizing a set of control operations of a control device according to the configured automated schedule,
wherein the configuring includes
selecting a series of available schedule options,
defining a plurality of schedule periods each having a set of schedule parameters,
configuring the set of schedule parameters for the plurality of schedule periods, and
defining the start time for one or more of the plurality of schedule periods to be a triggered action based upon an event distinct from a selection of a particular time,
wherein the set of schedule parameters includes a day, a start time, an upper threshold, and a lower threshold, and
wherein for each of the plurality of schedule periods the GUI includes a corresponding schedule period interface including a selectable top portion for displaying and editing the upper threshold, a middle portion for displaying a time duration expressed in units of time representing the difference between the start time and a next period start time, and a selectable bottom portion for displaying and editing the lower threshold.

US Pat. No. 10,139,122

DIAGNOSTIC DATA BUS FOR ACQUIRING AND COMMUNICATING DIAGNOSTIC INFORMATION FROM HVAC SYSTEMS

Trane International Inc.,...

1. An HVAC diagnostic system, comprising:a data network,
a diagnostic data bus,
an HVAC control bus independent of the diagnostic data bus operatively associated with at least one HVAC component;
a plurality of data gathering devices, each comprising:
a sensing interface configurable to measure an electrical property associated with one of the at least one HVAC components; and
a diagnostic interface in operative communication with the diagnostic data bus;
wherein each of the plurality of data gathering devices is configured to generate an exception message when the measured electrical property is anomalous;
wherein at least one of the plurality of data gathering devices further comprises a network interface in operative communication with the data network and configured to bridge the diagnostic data bus to the data network; and
a server in operative communication with the data network and configured to receive an exception message from one or more of the plurality of data gathering devices, calculate a probability of a fault occurring in an HVAC component based on the received exception message, and generate an alert in response to the probability of the fault exceeding a predetermined threshold.

US Pat. No. 10,014,739

METHODS AND SYSTEMS TO MOUNT A ROTOR TO A SHAFT

TRANE INTERNATIONAL INC.,...

1. A shaft of a compressor, comprising:an elongated body having a first end and a second end, wherein the first end defines a mounted end and the second end defines a loading end;
a rib that extends in a direction around a circumference of the elongated body, wherein the rib is a smooth protruded region on the elongated body, the rib is located closer to the first end of the elongated body than the second end of the elongated body;
the second end of the elongated body includes an expandable structure, wherein the expandable structure includes a pocket that is configured to receive a plug, the expandable structure is located at the second end of the elongated body; and
a cavity extending into the second end of the elongated body, the cavity configured to engage a connecting device;
wherein when the pocket receives the plug, the expandable structure is configured to be expandable by the plug in a radial direction relative to a centerline of the elongated body.

US Pat. No. 9,983,070

TEMPERATURE SENSOR VALIDATION

Trane International Inc.,...

1. A heating, ventilation, and/or air conditioning (HVAC) system, comprising:an outdoor unit including an outdoor heat exchanger;
a first temperature sensor configured to measure an outdoor ambient temperature at each of a first interval, a second interval, and a third interval following a defrost procedure;
a second temperature sensor configured to measure a coil temperature of the outdoor heat exchanger at the each of the first time interval, the second time interval, and the third time interval following the defrost procedure; and
a controller configured to determine if the second temperature sensor is unreliable based on the coil temperature relative to the outdoor ambient temperature at the each of the first interval, the second interval, and the third interval following the defrost procedure.

US Pat. No. 9,851,114

HVAC SYSTEM WITH MULTIPURPOSE CABINET FOR AUXILIARY HEAT TRANSFER COMPONENTS

Trane International Inc.,...

1. A heating, ventilation, and/or air conditioning (HVAC) system, comprising:
an airflow path;
a primary heat exchanger disposed along the airflow path, wherein the airflow path at least partially passes through the primary
heat exchanger; and

a multipurpose cabinet comprising a removable front mounting bracket comprising a substantially flat bottom portion that comprises
a notch disposed in the substantially flat bottom portion, wherein the multipurpose cabinet is selectively configurable for
housing a hydronic heat exchanger type of auxiliary heat transfer component carried by the removable front mounting bracket
and a rear mounting bracket disposed at a first offset distance from a rear wall of the multipurpose cabinet, wherein the
airflow path at least partially passes through the multipurpose cabinet, and wherein the removable front mounting bracket
is slidably received within the multipurpose cabinet in a rearward sliding direction and removed from the multipurpose cabinet
in a forward sliding direction;

wherein the multipurpose cabinet comprises at least one shelf comprising a raised tab that extends from the shelf, wherein
the raised tab is shaped complementary to the notch of the removable front mounting bracket, wherein the raised tab of the
at least one shelf is configured to engage the notch of the removable front mounting bracket and spatially constrain the removable
front mounting bracket to substantially restrict movement of the removable front mounting bracket in the forward sliding direction,
and wherein the multipurpose cabinet is void of supports between the at least one shelf that extends only partially toward
the rear wall of the multipurpose cabinet such that the hydronic heat exchanger type of auxiliary heat transfer component
is carried only by (1) engagement of the removable front mounting bracket with the at least one shelf and (2) the rear mounting
bracket.

US Pat. No. 9,777,724

SYSTEM AND METHOD FOR CONTROLLING A SYSTEM THAT INCLUDES VARIABLE SPEED COMPRESSOR

TRANE INTERNATIONAL INC.,...

1. A system, comprising:
a controller; and
a compressor,
the controller operates the compressor in operational states including: a unit off state, a startup state, and a running state,
the controller is configured to
(a) determine a required capacity of a conditioned space;
(b) compare the required capacity determined in (a) with a minimum capacity of the compressor,
wherein if the required capacity determined in (a) is greater than the minimum capacity of the compressor, then
(c1) operate the compressor in the running state; and
wherein if the required capacity determined (a) is less than the minimum capacity,
(c2) cycle between each of the operational states based on the required capacity determined in (a).

US Pat. No. 9,639,100

POWER-SENSING CIRCUIT FOR WIRELESS ZONE SENSORS

Trane International Inc.,...

1. A heating, ventilating, and air conditioning (HVAC) system for controlling climate conditions in a dwelling including a
plurality of zones, the system comprising:
a plurality of wireless thermostats disposed throughout the plurality of zones within the dwelling, each thermostat being
operable to control a climate condition in a corresponding zone, the corresponding zone being selected from the plurality
of zones;

a master control unit communicatively linked to the plurality of wireless thermostats and operable to receive a plurality
of signals therefrom, the plurality of signals being communicated through a network associated with the system; and

a primary power source linked to the master control unit and operable to supply power to each thermostat operatively connected
thereto, wherein each thermostat powered by the primary power source is operable to operate in a high-power mode;

wherein each thermostat includes a corresponding secondary power source operable to supply power for operating in a low-power
mode;

wherein each thermostat not powered by the primary power source in the high-power mode is powered by the corresponding secondary
power source in the low-power mode;

wherein each thermostat is selectively operable between a repeating thermostat and a non-repeating thermostat;
wherein each thermostat operating in the high-power mode operates as a repeating thermostat to receive and route signals received
from other thermostats operating in either the high-power mode or the low-power mode through a wireless portion of the network,
the signals being selected from the plurality of signals;

wherein each thermostat operating in the low-power mode operates as a non-repeating thermostat to limitedly perform sensing
functions and wirelessly transmit sensed parameters of at least one corresponding zone to an exclusion of control parameters
of other non-corresponding zones;

wherein a thermostat operating in the high-power mode as a repeating thermostat automatically switches to operating in the
low-power mode as a non-repeating thermostat in response to a switch from the primary power source providing power to the
thermostat to the secondary power source providing power to the thermostat; and

wherein a thermostat operating in the low-power mode as a non-repeating thermostat automatically reverts to operating in the
high-power mode as a repeating thermostat in response to a switch from the secondary power source providing power to the thermostat
to the primary power source providing power to the thermostat.

US Pat. No. 10,192,183

SYSTEM AND METHOD FOR REAL COST ANALYSIS OF A COOLING SYSTEM

TRANE INTERNATIONAL INC.,...

1. A computerized method for real cost analysis related to a modification to a physical structure of an existing cooling system, comprising: a computer processor determining a base real cost per time period of the existing cooling system; the computer processor generating an estimated real cost per time period of a model using the modification to a physical structure of the existing cooling system; and the computer processor comparing the base real cost per time period to the estimated real cost per time period, the computer processor outputting to a display a result of the real cost analysis related to the modification, wherein the modification includes one or more of: an addition of a thermal storage capability, and a removal of the thermal storage capability.

US Pat. No. 10,101,070

AXIAL THRUST CONTROL FOR ROTARY COMPRESSORS

Trane International Inc.,...

1. A method to control operation of a rotary compressor of a refrigeration system, comprising:receiving operational signals regarding operation of the rotary compressor of the refrigeration system;
determining an operating mode of the rotary compressor based upon the received operational signals;
selecting an acceleration/deceleration limit of the rotary compressor based upon the operating mode, wherein the acceleration/deceleration limit is based on acceleration and deceleration torques that limit axial movement of rotors of the rotary compressor; and
changing a speed of the rotary compressor while limiting acceleration/deceleration according the acceleration/deceleration limit.

US Pat. No. 10,098,037

METHOD OF FRAGMENTING A MESSAGE IN A NETWORK

TRANE INTERNATIONAL INC.,...

14. A node for sending a message via a packet-based network to another node, the node being configured to perform the following:determine an available space in a first packet;
determine a fragmented message size for fragmenting the message, wherein the fragmented message size is smaller by a number of bytes than the available space and the number of bytes corresponds to additional nodes in a route of the packet-based network;
fragment the message into at least one numbered fragmented message, each of the at least one numbered fragmented message has the fragmented message size;
assemble a first fragmented message of the at least one numbered fragmented message into the first packet;
send the first packet over the packet-based network;
receive the first packet sent over the packet-based network;
perform source routing in the packet-based network with respect to the received packet;
update the network header of the first packet to obtain a later packet; and
send the later packet over the packet-based network,wherein the first packet includes a free space, and at least a portion of the free space is occupied in the later packet.

US Pat. No. 9,989,943

HVAC SYSTEMS AND CONTROLS

TRANE INTERNATIONAL INC.,...

1. A method of controlling a HVAC system, comprising:obtaining an unloader state of an unloader of a compressor of the HVAC system, the unloader being a device located between an inlet and an outlet of the compressor and configured to control a gas flow through the compressor;
obtaining a control parameter based on the unloader state; and
controlling the HVAC system based on the control parameter,
wherein obtaining the unloader state of the compressor of the HVAC system includes:
obtaining a compressor operation condition;
obtaining a measurable parameter of the compressor; and
estimating the unloader state based on an association between the unloader state and the measurable parameter of the compressor according to the obtained compressor operation condition, the association between the unloader state and the measurable parameter of the compressor is represented by a first curve,
wherein obtaining the control parameter based on the unloader state is based on an association between the estimated unloader state and the control parameter according to the obtained compressor operation condition, and the association between the estimated unloader state and the control parameter is represented by a second curve.

US Pat. No. 9,696,067

APPARATUS AND METHOD FOR CONTROLLING INDOOR AIRFLOW FOR HEAT PUMPS

Trane International Inc.,...

1. A method for heating an airflow, the method comprising:
sensing a temperature of a first heat exchanger; identifying a speed of a compressor, the compressor adapted to compress a
refrigerant;

determining a heating capacity of a second heat exchanger;
determining a target leaving temperature from the second heat exchanger;
measuring an inlet temperature of air entering the second heat exchanger;
determining a volumetric air flow based on the determined heating capacity, the target leaving temperature and the inlet temperature;
determining a blower speed for an air blower using the temperature of the first heat exchanger, the speed of the compressor
and the volumetric air flow; and

operating the air blower at the determined blower speed to direct a flow of air across the second heat exchanger to heat the
airflow to a leaving air temperature.

US Pat. No. 10,344,995

HVAC SYSTEM CONTROLLER CONFIGURATION

TRANE INTERNATIONAL INC.,...

1. A method for configuring a heating, ventilation, and air conditioning (HVAC) system controller, the method comprising:displaying an installation profile icon on a user interface of the HVAC system controller, the installation profile icon representing an installation profile, wherein the installation profile includes a plurality of parameters defining equipment the HVAC system controller is configured to control, each of the plurality of parameters having a preselected equipment configuration setting in the installation profile, the plurality of parameters including two or more of an outdoor unit type, a number of cooling stages, a compressor type, an indoor unit type, a number of heating stages, and an indoor blower type;
receiving a first input on the user interface of the HVAC system controller based on a selection of the installation profile icon; and
setting all of the plurality of parameters in the memory of the HVAC system controller using the preselected equipment configuration settings in the installation profile in response to receiving the first input.

US Pat. No. 10,203,127

TIME-CONSTRAINED CONTROL OF AN HVAC SYSTEM

Trane International Inc.,...

1. A heating, ventilation, and air conditioning (HVAC) system configured to control speed of the HVAC rotary components, the HVAC system comprising: an indoor unit comprising a first variable speed drive to control a speed of an indoor unit rotary component, the first variable speed drive including a speed limit that is below a maximum speed of the indoor unit rotary component; an outdoor unit comprising a second variable speed drive to control a speed of an outdoor unit rotary component, the second variable speed drive including a speed limit that is below a maximum speed of the outdoor unit rotary component; a thermostat in communication with the indoor unit and the outdoor unit, the thermostat configured to transmit a first control signal to the first variable speed drive and the second variable speed drive; wherein upon receiving the first control signal, the first variable speed drive and the second variable speed drive are configured to operate in a high speed mode which is above the speed limit of the respective rotary component thereof.

US Pat. No. 10,161,685

HEAT EXCHANGER WITH PARTITIONED INLET HEADER FOR ENHANCED FLOW DISTRIBUTION AND REFRIGERATION SYSTEM USING THE HEAT EXCHANGER

TRANE INTERNATIONAL INC.,...

1. A heat exchanger, comprising:a first header, the first header including a first chamber, a second chamber and a partition separating the first chamber and the second chamber, the first chamber having an inlet compartment;
a second header;
a plurality of first heat exchange tubes connecting the first chamber and the second header;
a plurality of second heat exchange tubes connecting the second chamber and the second header,
the plurality of first heat exchange tubes and the plurality of second heat exchange tubes are microchannel heat exchange tubes;
a first inlet;
a second inlet; and
an outlet in fluid communication with the second chamber;
wherein the first inlet is in fluid communication with a continuous internal volume within the inlet compartment of the first chamber via a plurality of first metering orifices, and the second inlet is in fluid communication with the same continuous internal volume within the inlet compartment of the first chamber via a plurality of second metering orifices.

US Pat. No. 10,141,733

VARIABLE FREQUENCY DRIVE OVERVOLTAGE PROTECTION

Trane International Inc.,...

1. A method comprising:operating a variable frequency motor drive including an AC/DC converter electrically coupled with an AC power source, a DC link electrically coupled with the AC/DC converter, and a DC/AC converter electrically coupled with the DC link;
receiving information indicative of a voltage of the DC link at a microprocessor-based controller;
processing the received information to model a condition of at least one power electronics component of the variable frequency motor drive; and
disconnecting the AC/DC converter from the AC power source if the modeled condition meets a protection criterion;
wherein the disconnecting comprises performing a shunt trip operation performed in response to an evaluation of a DC bus voltage relative to a threshold, the shunt trip operation occurring without occurrence of an overcurrent condition.