Title:
REFRIGERATOR
Document Type and Number:
WIPO Patent Application WO/2021/225306
Kind Code:
A1
Abstract:
The present invention relates to a refrigerator. The refrigerator according to an embodiment of the present invention comprises: an evaporator executing a thermal exchange; a defrost heater which operates to remove frost implanted on the evaporator; a temperature sensor for sensing the temperature around the evaporator; and a controller for controlling the defrost heater. The controller, when a defrosting operation start point is reached, controls a defrosting operation mode to be executed, the defrosting operation mode including a cooling-before-defrost mode, a heater operation mode, and a cooling-after-defrost mode. In addition, according to the heater operation mode, the controller controls a pulse operation mode, in which the defrost heater is repeatedly turned on and off, to be executed, and according to a turning-on period of the defrost heater or the temperature of a cooling chamber in the pulse operation mode, the controller controls an amount of a cooling force supplied in the cooling-after-defrost mode to be variable. Accordingly, a defrosting efficiency may be increased, a power consumption may be improved, and the cooling force after the defrosting may be efficiently supplied.
Inventors:
SONG YOUNGSEUNG (KR)
PARK KYONGBAE (KR)
CHO YUNSU (KR)
CHA KYUNGHUN (KR)
CHOI SANGBOK (KR)
PARK KYONGBAE (KR)
CHO YUNSU (KR)
CHA KYUNGHUN (KR)
CHOI SANGBOK (KR)
Application Number:
PCT/KR2021/005052
Publication Date:
November 11, 2021
Filing Date:
April 21, 2021
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
F25D21/00; F25D21/08
Foreign References:
| JP2012167896A | 2012-09-06 | |||
| KR20190096698A | 2019-08-20 | |||
| KR20100032532A | 2010-03-26 | |||
| KR20040057156A | 2004-07-02 | |||
| US8511102B2 | 2013-08-20 | |||
| KR20010026176A | 2001-04-06 | |||
| US6694754B1 | 2004-02-24 | |||
| KR20160053502A | 2016-05-13 |
Attorney, Agent or Firm:
PARK, Byung Chang (KR)
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