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Title:
OUTDOOR UNIT OF DUAL REFRIGERATION DEVICE AND DUAL REFRIGERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/223559
Kind Code:
A1
Abstract:
This outdoor unit (1) comprises a first compressor (10), a first heat exchanger (12), a liquid receiver (13), a second compressor (100), a third heat exchanger (101), a second expansion valve (102), a solenoid valve (17), a first pressure sensor (103), a bypass flow path, a solenoid valve (17), and a control device (200). The bypass flow path connects the liquid receiver (13) and a suction port of the first compressor (10) in a first refrigerant circuit (C1). The solenoid valve (17) is disposed in the bypass flow path. The first pressure sensor (103) detects the pressure of any portion from an outlet of the second compressor (100) to the second expansion valve (102) in a second refrigerant circuit (C2). The control device (200) is configured so as to control the opening and closing of the solenoid valve (17) in response to the output of the pressure sensor (103).

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Inventors:
NISHIYAMA TAKUMI (JP)
ISHIKAWA TOMOTAKA (JP)
ISHIHARA NOBUYA (JP)
YASHIRO TAKANORI (JP)
IUCHI HIROYA (JP)
ONO HIDEKI (JP)
NOMOTO SO (JP)
Application Number:
PCT/JP2022/021012
Publication Date:
November 23, 2023
Filing Date:
May 20, 2022
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B7/00; F25B1/00; F25B41/20; F25B49/02
Domestic Patent References:
WO2014045394A12014-03-27
Foreign References:
JP2000274848A2000-10-06
JP2020046157A2020-03-26
JP2013083407A2013-05-09
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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