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Patent Searching and Data


Title:
LAUNDRY PROCESSING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2020/009528
Kind Code:
A1
Abstract:
The present invention relates to a laundry processing apparatus. The laundry processing apparatus according to an embodiment of the present invention comprises: an inverter for, by a switching operation, converting a direct current power from a converter into an alternating current power and outputting the converted alternating current power to a motor; and a control unit for controlling, when a washing tub motor rotates at a predetermined speed, the washing tub motor to distinguishly operate according to a first interval in which the speed of a drainage motor increases, a second interval in which the speed of the drainage motor decreases after the first interval, and a third interval in which the speed of the drainage motor decreases after the second interval, wherein the magnitude of the downward slope of the second interval is smaller than the magnitude of the downward slope of the third interval. Accordingly, a speed ripple of the drainage motor can be reduced.

Inventors:
PARK WONSEOK (KR)
KIM JIEON (KR)
LEE KIWOOK (KR)
Application Number:
PCT/KR2019/008285
Publication Date:
January 09, 2020
Filing Date:
July 05, 2019
Export Citation:
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Assignee:
LG ELECTRONICS INC (KR)
International Classes:
D06F39/08; D06F33/42; D06F34/10
Domestic Patent References:
WO2013035279A12013-03-14
Foreign References:
KR101756408B12017-07-11
JPH10117996A1998-05-12
JP2014004276A2014-01-16
JP2009006081A2009-01-15
Attorney, Agent or Firm:
PARK, Byung Chang (KR)
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