公开(公告)号：US11952698B2

公开(公告)日：2024-04-09

申请号：US17258289

申请日：2019-07-05

Applicant: LG ELECTRONICS INC.

Inventor： Junsung Kim ,  Sungwan Kim ,  Chungill Lee

IPC: D06F33/42 ,  D06F34/10 ,  D06F34/14 ,  D06F39/08 ,  D06F103/18 ,  D06F103/24 ,  D06F105/08

CPC classification number: D06F33/42 ,  D06F34/14 ,  D06F34/10 ,  D06F39/085 ,  D06F2103/18 ,  D06F2103/24 ,  D06F2105/08

Abstract: The present disclosure relates to a laundry treatment machine. A laundry treatment machine according to an embodiment of the present disclosure including an inverter to convert the DC voltage from the converter into an alternating current (AC) voltage based on a switching operation and to output the converted AC voltage to the drain motor; and a controller to control the drain motor to operate at any one of a first speed, a second speed less than the first speed, and a stop when the washing tub motor is accelerated. Accordingly, according to the operation of the washing tub motor, it is possible to efficiently drive the drain motor.

公开(公告)号：US11905637B2

公开(公告)日：2024-02-20

申请号：US17258330

申请日：2019-07-05

Applicant: LG ELECTRONICS INC.

Inventor： Sungwan Kim ,  Jieon Kim ,  Jongseok Jung

IPC: D06F33/42 ,  D06F23/04 ,  D06F37/30 ,  H02M7/5387 ,  H02P27/08 ,  D06F103/48 ,  D06F105/08 ,  D06F105/48 ,  D06F39/08 ,  D06F105/46 ,  D06F103/18

CPC classification number: D06F33/42 ,  D06F23/04 ,  D06F37/304 ,  H02M7/53871 ,  H02P27/08 ,  D06F39/085 ,  D06F2103/18 ,  D06F2103/48 ,  D06F2105/08 ,  D06F2105/46 ,  D06F2105/48

Abstract: The present disclosure relates to a laundry treatment machine. A drain laundry treatment machine according to an embodiment of the present disclosure: an inverter converting a direct current (DC) voltage from a converter into an alternating current (AC) voltage based on a switching operation and outputting the converted AC voltage to a drain motor; an output current detector to detect an output current flowing in the drain motor; and a controller to control the drain motor to rotate at a speed lower than a first speed when the output current flowing in the drain motor decreases in a state where a speed of the drain motor is the first speed. Accordingly, it is possible to reduce a pressure in a vortex chamber of the drain pump during dewatering.