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Patent Searching and Data


Title:
REFRIGERATOR
Document Type and Number:
WIPO Patent Application WO/2019/107066
Kind Code:
A1
Abstract:
The present invention has: a flow channel switching valve (40) connected to a downstream side of a main condenser (21); a dew-proofing pipe (41) connected to a downstream side of the flow channel switching valve (40); and a bypass passage (43) connected in parallel to the dew-proofing pipe (41). When an evaporator (20) is defrosted, residual refrigerant in the evaporator (20) and the dew-proofing pipe (41) is collected through an operation of closing a freezing chamber damper, by fully closing the flow channel switching valve (40) and opening a refrigeration chamber damper at the same time during the operations of a compressor (19) and an evaporator fan (30). Thereafter, the collectged high-pressure refrigerant is supplied to the evaporator (20) by stopping the compressor (19) and opening the flow channel switching valve (40) toward the bypass passage (43). After a predetermined period of time, a defrosting heater is electrically energized.

Inventors:
HORIO Yoshimasa
SAKAI Hisakazu
HORII Katsunori
TAKAMI Fuminori
Application Number:
JP2018/040791
Publication Date:
June 06, 2019
Filing Date:
November 02, 2018
Export Citation:
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Assignee:
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. (1-61, Shiromi 2-chome Chuo-ku, Osaka-sh, Osaka 07, 〒5406207, JP)
International Classes:
F25D11/00; F25B1/00; F25B47/02; F25D21/04; F25D21/06; F25D21/08
Domestic Patent References:
WO2017179500A12017-10-19
WO2012157263A12012-11-22
Foreign References:
JP2017026236A2017-02-02
JPH09329386A1997-12-22
JP2003083667A2003-03-19
JP2003322454A2003-11-14
JPS63169457A1988-07-13
KR20170029346A2017-03-15
Attorney, Agent or Firm:
KAMATA Kenji et al. (1-61, Shiromi 2-chome, Chuo-ku, Osaka-sh, Osaka 07, 〒5406207, JP)
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