Title:
REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/239172
Kind Code:
A1
Abstract:
This refrigeration cycle device comprises: a main circuit in which a low-stage compressor, an oil cooler, a high-stage compressor, an oil separator, a condenser, a first expansion valve, and an evaporator are connected in a loop by refrigerant piping and through which a refrigerant circulates in this order; and an oil return circuit, one end of which is connected to the oil separator and the other end of which is connected to a first junction that is on the discharge side of the low-stage compressor and that is on the inlet side of the oil cooler, for returning the oil separated by the oil separator to the main circuit.
Inventors:
ISHIKAWA TOMOTAKA (JP)
ARII YUSUKE (JP)
UEDA KOHEI (JP)
HAYASAKA MOTOSHI (JP)
ARII YUSUKE (JP)
UEDA KOHEI (JP)
HAYASAKA MOTOSHI (JP)
Application Number:
PCT/JP2021/018149
Publication Date:
November 17, 2022
Filing Date:
May 13, 2021
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B1/10
Foreign References:
| JP2021055940A | 2021-04-08 | |||
| JP2020016391A | 2020-01-30 | |||
| JP2014020727A | 2014-02-03 | |||
| JP2016003840A | 2016-01-12 | |||
| JP2007093182A | 2007-04-12 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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