US Patent No. 10,798,852

METHOD OF CONTROLLING COOLING IN SERVER ROOM AND SYSTEM IMPLEMENTING THEREOF


Patent No. 10,798,852
Issue Date October 06, 2020
Title Method Of Controlling Cooling In Server Room And System Implementing Thereof
Inventorship Mikhail Mikhailovich Deev, Moscow (RU)
Aleksandr Alekseevich Konovalov, Krasnogorsk (RU)
Petr Leonidovich Ronzhin, Balashikha (RU)
Assignee YANDEX EUROPE AG, Lucerne (CH)

Claim of US Patent No. 10,798,852

1. An air flow control method for cooling a data center comprising at least a first server room and a second server room, the first server room comprising a first chamber and a second chamber partitioned therebetween by a first server rack and being in fluid communication therebetween via the first server rack, the first chamber having a first air inlet fluidly coupled to an outside area of the server room, the second chamber having an air outlet fluidly coupled to the outside area, the second server room comprising a third chamber and a fourth chamber partitioned therebetween by a second server rack and being in fluid communication therebetween via the second server rack, the third chamber having a second air inlet fluidly coupled to the outside of the data center, and the fourth chamber being fluidly coupled to the second chamber, the method being executable by a controller unit coupled to:a first damper partitioning the second chamber into a first portion and a second portion fluidly coupled to the air outlet, the first damper configured to control the amount of air to flow from the first portion into the second portion;
a second damper partitioning the fourth chamber into a third portion and a fourth portion fluidly coupled to the air outlet, the second damper configured to control the amount of air to flow from the third portion into the fourth portion;
a first inlet fan configured to flow air from the outside area into the first chamber at different speeds, via the first air inlet;
a second inlet fan configured to flow air from the outside area into the third chamber at different speeds via the second inlet;
an outlet fan configured to flow air from the second chamber into the outside area at different speeds, via the air outlet;
a first differential pressure gauge configured to measure a first differential pressure value of an air pressure of the first chamber relative to an air pressure of the outside area;
a second differential pressure gauge configured to measure a second differential pressure value of an air pressure of the second chamber relative to the air pressure of the outside area;
a third differential pressure gauge configured to measure a third differential pressure value of an air pressure of the third chamber relative to the air pressure of the outside area;
a fourth differential pressure gauge configured to measure a fourth differential pressure value of an air pressure of the first portion relative to the air pressure of the outside area;
a fifth differential pressure gauge configured to measure a fifth differential pressure value of an air pressure of the third portion relative to the air pressure of the outside area; and
the method comprising:
receiving the first differential pressure value from the first differential pressure gauge;
receiving the second differential pressure value from the second differential pressure gauge;
receiving the third differential pressure value from the third differential pressure gauge;
receiving the fourth differential pressure value from the fourth differential pressure gauge;
receiving the fifth differential pressure value from the fifth differential pressure gauge;
generating a first control signal to adjust the speed of the first inlet fan based on the first differential pressure value;
generating a second control signal to adjust the speed of the outlet fan based on the second differential pressure value;
generating a third control signal to adjust the speed of the second inlet fan, based on the third differential pressure value;
generating a fourth control signal to adjust the opening of the first damper based on the fourth differential pressure value;
generating a fifth control signal to adjust the opening of the second damper based on the fifth differential pressure value;
transmitting the first, the second and the third control signals to the respective inlet and outlet fans to adjust the first differential pressure value to a first target value, the second differential pressure value to a second target value, and the third differential value to a third target value, the first target value being above the second target value, thereby maintaining a flow of air from the first chamber to the second chamber; and
transmitting the fourth and fifth control signals to the respective first and second dampers to adjust the fourth differential pressure value to a fourth target value, and adjust the fifth differential pressure value to a fifth target value, the fourth target value being below the first target value and above the second target value, the fifth target value being below the third target value and above the second target value.