US Patent No. 10,655,267


Patent No. 10,655,267
Issue Date May 19, 2020
Title Laundry Treatment Apparatus And Method Of Controlling The Same
Inventorship Jonegseok Jung, Seoul (KR)
Hyunsang Kim, Seoul (KR)
Assignee LG Electronics Inc., Seoul (KR)

Claim of US Patent No. 10,655,267

1. A laundry treatment apparatus comprising:a cabinet having a first opening and a second opening;
a first cabinet door and a second cabinet door provided at the cabinet and configured to open and close the first opening and the second opening, respectively;
a first washing apparatus provided in the cabinet and configured to treat laundry that is introduced from a front side of the first washing apparatus through the first opening; and
a second washing apparatus configured to treat laundry introduced from an upper side of the second washing apparatus through the second opening,
wherein the second washing apparatus comprises:
a tub configured to hold water and having an opening at a top of the tub;
a tub cover arranged on the tub and provided to cover the top of the tub, the tub cover defining an introduction port through which an inside of the tub is accessible;
a tub door provided at the tub cover and configured to open and close the introduction port of the tub cover, the tub being substantially sealed based on the tub door closing the introduction port;
a drum provided inside the tub and configured to rotate about a vertical shaft;
an agitation unit that protrudes upward from a center part of a bottom surface of the drum and that is configured to agitate water and laundry inside the drum in a state in which the drum rotates about the vertical shaft;
a heater configured to heat water in the tub;
a water supply pipe configured to supply cold water to the tub;
a water supply valve configured to control a flow through the water supply pipe; and
at least one processor configured to, in a state in which the introduction port is closed by the tub door, control the water supply valve and the heater by:
controlling the heater to heat a first amount of water in the tub to a first temperature; and
intermittently controlling the water supply valve to additionally and intermittently supply, to the first amount of water that was heated to the first temperature by the heater, incremental amounts of water into the tub to reduce a difference in pressure between inside and outside of the tub.