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Title:
REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/205539
Kind Code:
A1
Abstract:
This refrigeration cycle device comprises: a refrigerant circuit (RC) that includes a compressor (230), expansion valves (250, 260), an indoor heat exchanger (110), an outdoor heat exchanger (210), and a refrigerant reservoir (500) and circulates a refrigerant mixture containing at least CF3I and HFO1123; an injection pipe (401) that includes a first end located at a first height (H1) in the refrigerant reservoir (500) and a second end connected to the compressor (230); and an injection valve (400) that is provided in the injection pipe (401). Of the refrigerants contained in the refrigerant mixture, the CF3I has the largest liquid density. The first height (H1) is lower than the height at which the leading ends of other refrigerant pipes in the refrigerant reservoir (500) are located.

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Inventors:
SATO MASANORI (JP)
NISHIYAMA TAKUMI (JP)
MURATA KENTA (JP)
Application Number:
PCT/JP2020/015671
Publication Date:
October 14, 2021
Filing Date:
April 07, 2020
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B43/00; F25B1/00
Domestic Patent References:
WO2014156743A12014-10-02
WO2015136703A12015-09-17
WO2020039707A12020-02-27
Foreign References:
JP2017145380A2017-08-24
JP2018169052A2018-11-01
JP2013204936A2013-10-07
Other References:
See also references of EP 4134603A4
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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