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Patent Searching and Data


Title:
DRAINAGE PUMP DRIVING DEVICE AND LAUNDRY PROCESSING APPARATUS COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2019/203604
Kind Code:
A1
Abstract:
The present invention relates to a drainage pump driving device and a laundry processing apparatus comprising same. A drainage pump driving device according to an embodiment of the present invention comprises a control unit for, during drainage, on the basis of an output current and a DC terminal voltage, when the lift, which corresponds to a difference between a water level at a water inlet part through which water flows into a drainage pump and a water level at a water outlet part through which water is discharged from the drainage pump, corresponds to a first level, controlling a motor to be driven by a first power, and when the lift corresponds to a second level greater than the first level, controlling the motor to be driven by the first power. Accordingly, even when the lift is changed during drainage, the pumping can be performed smoothly.

Inventors:
JE JUNGMOON (KR)
LEE CHUNGILL (KR)
LEE KIWOOK (KR)
Application Number:
PCT/KR2019/004737
Publication Date:
October 24, 2019
Filing Date:
April 19, 2019
Export Citation:
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Assignee:
LG ELECTRONICS INC (KR)
International Classes:
D06F39/08; D06F33/42; D06F34/08
Foreign References:
KR101756408B12017-07-11
KR20110112486A2011-10-13
JP2013244315A2013-12-09
JP2005160510A2005-06-23
KR20170021116A2017-02-27
KR20060122562A2006-11-30
JP2004135491A2004-04-30
Other References:
See also references of EP 3783143A4
Attorney, Agent or Firm:
PARK, Byung Chang (KR)
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