公开(公告)号：US10799021B2

公开(公告)日：2020-10-13

申请号：US15607848

申请日：2017-05-30

Applicant: LG ELECTRONICS INC.

Inventor： Changgyu Choi ,  Jongseok Jung ,  Seongmin Jang ,  Junho Lee ,  Jihong Lee ,  Kwanwoong Jeong

IPC: A47B47/03 ,  D06F39/02 ,  D06F39/14 ,  D06F39/08 ,  D06F35/00 ,  D06F39/00 ,  D06F39/12 ,  D06F29/00 ,  D06F31/00 ,  D06F23/04

Abstract: A laundry treatment apparatus that includes: a cabinet; a first cabinet door; a second cabinet door; a first washing apparatus; and a second washing apparatus including: a tub that is accessible through a second opening in a state in which the second cabinet door is opened, that is configured to store water, and that includes a tub opening at a top of the tub, a tub cover that is coupled to the tub and that covers the tub opening, and a drum that is configured to rotate about a shaft, the shaft extending in the second direction, wherein the tub cover includes an air channel unit that is configured to transfer air between an interior area of the tub and an exterior area of the tub in a state in which the second washing apparatus is operational is disclosed.

公开(公告)号：US10669661B2

公开(公告)日：2020-06-02

申请号：US14814556

申请日：2015-07-31

Applicant: LG ELECTRONICS INC.

Inventor： Jonghwan Lee ,  Junho Lee ,  Dongsoo Lee

IPC: D06F23/04 ,  D06F29/00 ,  D06F17/08 ,  D06F21/08 ,  D06F31/00 ,  D06F39/10 ,  D06F17/06 ,  D06F37/12

Abstract: A laundry treatment apparatus for treating laundry includes a main washing device and a secondary washing device. The secondary washing device includes a tub configured to receive wash water, a drum rotatably provided in the tub and configured to receive laundry, and a pulsator rotatably provided in the drum and configured to be rotated by motion of one or both of the wash water and the laundry that are received in the drum.

公开(公告)号：US09973131B2

公开(公告)日：2018-05-15

申请号：US15013817

申请日：2016-02-02

Applicant: LG ELECTRONICS INC.

Inventor： Junho Lee ,  Chungill Lee ,  Jungmoon Je

IPC: H02P27/06 ,  H02P27/08 ,  H02P6/28 ,  H02P21/18 ,  D06F37/30 ,  H02P6/14

CPC classification number: H02P27/06 ,  D06F37/304 ,  H02P6/14 ,  H02P6/28 ,  H02P21/18 ,  H02P27/085

Abstract: The present disclosure relates to a motor driving device and a laundry treatment apparatus. The motor driving device may include an inverter to convert DC power into AC power according to a switching operation and to output the converted AC power to a motor, an output current detector to detect an output current flowing through the motor, and a controller to control the inverter based on the detected output current. The controller changes a carrier frequency, changes a voltage command based on the changed carrier frequency and outputs an inverter switching control signal to the inverter based on the changed carrier frequency and the changed voltage command. Accordingly, noise may be reduced during operation of the motor.