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Title:
REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/260804
Kind Code:
A1
Abstract:
A flow path switching device (5) selectively switches the circulation direction of a refrigerant between a first circulation direction and a second circulation direction that is the opposite of the first circulation direction. In the first circulation direction, the refrigerant circulates sequentially through a first heat exchanger (4), a compressor (1), a first heat exchanger (21), and a first decompression device (31), and circulates sequentially through the first heat exchanger (4), the compressor (1), a first heat exchange (23), and a second decompression device (33). A control device (1) identifies a specific heat exchanger (21) between the first heat exchanger (21) and the first heat exchanger (23). When the elapsed time from activation of the compressor (1) is shorter than a first reference time, the control device (10) sets the degree of opening of a specific decompression device (31), which communicates with the specific heat exchanger (21), so as to be greater than the degree of opening of the decompression device (33) which is different than the specific decompression device (31), between the first decompression device (31) and the second decompression device (33), and sets the circulation direction of the refrigerant to the second circulation direction.

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Inventors:
ISHIYAMA HIROKI (JP)
Application Number:
PCT/JP2020/024633
Publication Date:
December 30, 2021
Filing Date:
June 23, 2020
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B1/00; F25B5/02; F25B6/02; F25B13/00
Foreign References:
JP2002147879A2002-05-22
JP2012102927A2012-05-31
JPH05203296A1993-08-10
JPS63129258A1988-06-01
JP2005140433A2005-06-02
JPH01203854A1989-08-16
JP2760218B21998-05-28
JP2005291552A2005-10-20
JP2009144940A2009-07-02
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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