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Patent Searching and Data


Title:
REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/065213
Kind Code:
A1
Abstract:
The present invention improves operability during work associated with communication pipes in a refrigeration cycle device. A first communication flow path (50) connects a heat source unit (10) and a first usage unit (31), and channels a refrigerant. A second communication flow path (80) connects the heat source unit (10) and the first usage unit, and channels a refrigerant having a lower specific enthalpy than the refrigerant flowing through the first communication flow path (50). A refrigerant that has a saturation pressure of 4.5 MPa or higher when a saturation temperature reaches 65°C, or a refrigerant that has a critical temperature of 65°C or lower, is used. The first communication flow path (50) includes a metal first communication pipe (51) and a metal second communication pipe (52). Refrigerant flows from either of the heat source unit (10) and the first usage unit (31) to both of the first communication pipe (51) and the second communication pipe (52), and the refrigerant flowing in both of the first communication pipe (51) and the second communication pipe (52) flows from the first communication pipe (51) and the second communication pipe (52) to the other of the heat source unit (10) and the first usage unit (31).

Inventors:
YAMADA, Takuro
YOSHIMI, Atsushi
KUMAKURA, Eiji
IWATA, Ikuhiro
MIYAZAKI, Takeru
MATSUOKA, Hiromune
Application Number:
JP2020/030592
Publication Date:
April 08, 2021
Filing Date:
August 11, 2020
Export Citation:
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Assignee:
DAIKIN INDUSTRIES, LTD. (4-12 Nakazaki-Nishi 2-Chome, Kita-ku, Osaka-sh, Osaka 23, JP)
International Classes:
F25B41/00; F25B1/00; F24F1/32
Attorney, Agent or Firm:
SHINJYU GLOBAL IP (1-4-19 Minamimori-machi, Kita-ku, Osaka-sh, Osaka 54, JP)
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