Title:
REFRIGERATOR
Document Type and Number:
WIPO Patent Application WO/2021/225309
Kind Code:
A1
Abstract:
The present invention relates to a refrigerator. The refrigerator, according to one embodiment of the present invention, comprises: an evaporator for carrying out heat exchange; a defrosting heater operating in order to remove frost formed on the evaporator; a temperature sensor for detecting the temperature around the evaporator; and a control unit for controlling the defrosting heater. The control unit controls so that: when a defrosting operation starting time arrives, a defrosting operation mode, including a pre-defrosting cooling mode, a heater operation mode and a post-defrosting cooling mode, is carried out; according to the heater operation mode, a continuous operation mode, in which the defrosting heater is continuously on, is carried out; and during the continuous operation mode, when a temperature change rate, detected by the temperature sensor, sequentially increases, decreases and increases again, a pulse operation mode, in which the defrosting heater is repeatedly turned on and off, is carried out. Accordingly, defrosting efficiency may be increased, and power consumption may be reduced.
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Inventors:
SONG YOUNGSEUNG (KR)
CHO YUNSU (KR)
CHO YUNSU (KR)
Application Number:
PCT/KR2021/005057
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:
| KR20140074653A | 2014-06-18 | |||
| KR19980058338U | 1998-10-26 | |||
| KR100190126B1 | 1999-06-01 | |||
| JPH0571855A | 1993-03-23 | |||
| US6694754B1 | 2004-02-24 | |||
| KR20010026176A | 2001-04-06 | |||
| US6694754B1 | 2004-02-24 | |||
| KR20160053502A | 2016-05-13 |
Attorney, Agent or Firm:
PARK, Byung Chang (KR)
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