REFRIGERATION CYCLE DEVICE

WIPO Patent Application WO/2022/013982

A1

A refrigeration cycle device (100) comprises a first refrigerant circuit, which includes a compressor (1), a condenser (2), a first expansion valve (3), and an evaporator (4) and circulates a refrigerant through the compressor, the condenser, the first expansion valve, and the evaporator in that order. The compressor has a discharge port for discharging the refrigerant having a first pressure, an inlet port for sucking in the refrigerant having a second pressure lower than the first pressure, and an intermediate pressure port for allowing the refrigerant having an intermediate pressure between the first pressure and the second pressure to flow in. The refrigeration cycle device further comprises an intermediate pressure injection flow path (13), which has a first end connected between the condenser and the first expansion valve in the first refrigerant circuit and a second end connected to the intermediate pressure port of the compressor and returns some of the refrigerant flowing out from the condenser to the compressor. The intermediate pressure injection flow path includes a second expansion valve (5), a bypass flow path (14) that bypasses the second expansion valve, and an adjustment valve (15) that adjusts the flow rate of the refrigerant flowing through the bypass flow path.

ISHIKAWA TOMOTAKA (JP)
ARII YUSUKE (JP)
HAYASAKA MOTOSHI (JP)

PCT/JP2020/027550

January 20, 2022

July 15, 2020

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MITSUBISHI ELECTRIC CORP (JP)

F25B1/00

WO2014203354A1

2014-12-24

JP2001091064A	2001-04-06
JPH08271062A	1996-10-18
JP2007085705A	2007-04-05
JP2017026238A	2017-02-02

FUKAMI PATENT OFFICE, P.C. (JP)

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