公开(公告)号：US20210317834A1

公开(公告)日：2021-10-14

申请号：US17259603

申请日：2019-09-06

Applicant: LG ELECTRONICS INC.

Inventor： Chungill LEE ,  Jinseong HWANG ,  Kiwook LEE ,  Jeongkeun CHOI

IPC: F04D25/06 ,  D06F39/08 ,  F04D29/22

Abstract: The present disclosure relates to a drain pump driving apparatus and a laundry treatment machine including the same. A drain pump driving apparatus according to an embodiment of the present disclosure and a laundry treatment machine including the same include: an inverter to convert an input direct current (DC) voltage into an alternating current (AC) voltage by a switching operation and to output 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 in a first direction during a first period, rotate in a second direction opposite to the first direction during a second period, and continuously rotate in the first direction when a level of the output current at rotation in the first direction is greater than a level of the output current at rotation in the second direction. Accordingly, it is possible to secure a pumping performance of the drain pump.

公开(公告)号：US20180105968A1

公开(公告)日：2018-04-19

申请号：US15696648

申请日：2017-09-06

Applicant: LG ELECTRONICS INC.

Inventor： Gunho LEE ,  Hyunchul CHOI ,  Jeongkeun CHOI

IPC: D06F37/22 ,  D06F37/30 ,  D06F37/26 ,  D06F37/06

CPC classification number: D06F37/22 ,  D06F37/06 ,  D06F37/266 ,  D06F37/267 ,  D06F37/304 ,  D06F39/001 ,  D06F39/12

Abstract: A drum type washing machine comprising a tub mounted in a cabinet and supported by a damper and a spring in the cabinet; a coupling boss protruding from a rear surface of the tub; a transit bolt configured to be coupled to the coupling boss through an insert hole formed at a rear surface of the cabinet to fix the tub to the cabinet when transporting the drum type washing machine; and an elastically deformable hole cap configured to be attached to the insert hole from an inside of the cabinet, the hole cap including a plurality of slits through which the transit bolt passes.