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Patent Searching and Data


Title:
CIRCULATING PUMP DRIVING DEVICE AND LAUNDRY PROCESSING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2020/009521
Kind Code:
A1
Abstract:
The present invention pertains to a circulating pump driving device and a laundry processing apparatus. The circulating pump driving device and the laundry processing apparatus according to embodiments of the present invention include: an inverter which converts DC power from a converter into AC power by means of a switching operation, and outputs, to a circulating pump motor, the AC power obtained through conversion; and a control unit which, when an operation mode is classified into a first mode in which the speed of the circulating pump motor is constant, a second mode in which the speed of the circulating pump motor repeatedly rises and falls, and a third mode in which the speed of the circulating pump motor rises at a first ascending slope and a second ascending slope and is then maintained constant, controls the device or apparatus to operate in at least two modes among the three modes. Accordingly, washing power can be improved via circulation pumping when washing laundry.

Inventors:
KIM JUNSUNG (KR)
KIM JIHOON (KR)
LEE JUNHO (KR)
Application Number:
PCT/KR2019/008278
Publication Date:
January 09, 2020
Filing Date:
July 05, 2019
Export Citation:
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Assignee:
LG ELECTRONICS INC (KR)
International Classes:
F04D15/02; D06F34/10; D06F39/08; F04D15/00; H02P27/06
Foreign References:
JP2005013577A2005-01-20
KR20180072336A2018-06-29
JP2010046125A2010-03-04
JP2009006081A2009-01-15
KR20160044901A2016-04-26
JP2001276485A2001-10-09
JP2002166090A2002-06-11
Other References:
See also references of EP 3819503A4
Attorney, Agent or Firm:
PARK, Byung Chang (KR)
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