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Patent Searching and Data


Title:
REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/205536
Kind Code:
A1
Abstract:
This refrigeration cycle device (100) comprises: a compressor; a four-way valve; a first heat exchanger (3) including a first outflow/inflow section (3A) and a second outflow/inflow section (3B) into and out of which a non-azeotropic mixed refrigerant flows, and first pipe sections (31A) and second pipe sections (32A) that are serially connected to each other between the first outflow/inflow section and the second outflow/inflow section and through which the non-azeotropic mixed refrigerant flows; a decompression device; and a second heat exchanger (6). The non-azeotropic mixed refrigerant includes a refrigerant which has the property of causing a disproportionation reaction and a refrigerant which does not have the property of causing a disproportionation reaction. The four-way valve switches between a first state in which the non-azeotropic mixed refrigerant flows through the compressor, the first heat exchanger, the decompression device, and the second heat exchanger in this order and a second state in which the non-azeotropic mixed refrigerant flows through these components in the opposite direction from when in the first state. When in the first state, the non-azeotropic mixed refrigerant flows through the first outflow/inflow sections, the first pipe sections, the second pipe sections, and the second outflow/inflow section in this order within the first heat exchanger. When in the second state, the non-azeotropic mixed refrigerant flows through the second outflow/inflow section, the second pipe sections, the first pipe sections, and the first outflow/inflow section in this order within the first heat exchanger. The area expansion rate of first inner circumferential surfaces in the first pipe sections is higher than the area expansion rate of second inner circumferential surfaces in the second pipe sections.

Inventors:
ITO DAISUKE (JP)
Application Number:
PCT/JP2020/015651
Publication Date:
October 14, 2021
Filing Date:
April 07, 2020
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B1/00
Domestic Patent References:
WO2019193712A12019-10-10
WO2020003494A12020-01-02
WO2015140887A12015-09-24
WO2020003494A12020-01-02
Foreign References:
JP2017116242A2017-06-29
JPH06307738A1994-11-01
JPH06281293A1994-10-07
JP2001221537A2001-08-17
Other References:
See also references of EP 4134601A4
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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