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1. (WO2017183883) DRAIN PUMP DRIVING APPARATUS, AND LAUNDRY PROCESSING APPARATUS COMPRISING SAME

Pub. No.:    WO/2017/183883    International Application No.:    PCT/KR2017/004136
Publication Date: Fri Oct 27 01:59:59 CEST 2017 International Filing Date: Wed Apr 19 01:59:59 CEST 2017
IPC: D06F 39/08
D06F 33/02
D06F 37/24
D06F 37/12
D06F 37/30
D06F 37/42
D06F 39/00
Applicants: LG ELECTRONICS INC.
엘지전자 주식회사
Inventors: JE, Jungmoon
제정문
LEE, Chungill
이청일
LEE, Kiwook
이기욱
Title: DRAIN PUMP DRIVING APPARATUS, AND LAUNDRY PROCESSING APPARATUS COMPRISING SAME
Abstract:
The present invention relates to a drain pump driving apparatus and a laundry processing apparatus comprising the same. The drain pump driving apparatus and the laundry processing apparatus comprising the same, according to an embodiment of the present invention, comprise: a motor for operating a drain pump; an inverter for converting direct current power to alternating current power by a switching operation and outputting the converted alternating current power to the motor; an output current detection unit for detecting an output current flowing to the motor; and a control unit for controlling the inverter, wherein the control unit can calculate an RPM ripple of the motor on the basis of an output current, and can change the RPM of the motor on the basis of the calculated RPM ripple of the motor. As such, it is possible to reduce noise during drainage.