Title:
DRAINAGE PUMP DRIVING APPARATUS, AND LAUNDRY TREATMENT MACHINE INCLUDING SAME
Document Type and Number:
WIPO Patent Application WO/2020/009525
Kind Code:
A1
Abstract:
The present invention relates to a drainage pump driving apparatus and a laundry treatment machine including same. A drainage pump driving apparatus according to an embodiment of the present invention comprises: a converter configured to convert an input AC power source into a DC power source; a voltage drop unit configured to drop down a DC voltage from the converter; an inverter module operating on the basis of a first voltage from the voltage drop unit and configured, by a switching operation, to output the converted AC power source to a drainage pump motor; a control unit operating on the basis of a second voltage from the voltage drop unit and configured to control the inverter module; and a voltage adjusting unit configured to adjust a level of voltage information of the motor output from the inverter module, and output the adjusted voltage information to the control unit. Accordingly, a drainage motor can be driven stably.
Inventors:
REW JEONGBIN (KR)
LEE JUNHO (KR)
LEE CHUNGILL (KR)
LEE JUNHO (KR)
LEE CHUNGILL (KR)
Application Number:
PCT/KR2019/008282
Publication Date:
January 09, 2020
Filing Date:
July 05, 2019
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H02H7/122; D06F34/10; F04D15/00; F04D15/02; H02P21/18
Foreign References:
| KR101449513B1 | 2014-10-14 | |||
| JP2017184940A | 2017-10-12 | |||
| JP2007110780A | 2007-04-26 | |||
| JP2013235625A | 2013-11-21 | |||
| JP2013059202A | 2013-03-28 |
Attorney, Agent or Firm:
PARK, Byung Chang (KR)
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