REFRIGERATION CYCLE DEVICE

WIPO Patent Application WO/2021/009850

A1

A refrigeration cycle device (10) is provided with a compressor (1), a four-way valve (2), a first outdoor heat exchanger (3), a first expansion valve, and an indoor heat exchanger (5). The four-way valve (2) includes a casing (21), a first flow path, a second flow path, a flow path switching piston (23), and a wall part (24). The flow path switching piston (23) is configured to slide on an inner surface (IS) to switch the flow of a refrigerant between the first flow path and the second flow path. The wall part (24) is configured to slide on the inner surface (IS) together with the flow path switching piston (23) and is disposed so as to cover the flow path switching piston (23) with a spacing (SP) from the flow path switching piston (23).

JP6147173	A differential pressure drive type four-quarters valve and an air-conditioner
JPS63106472	SLIDE TYPE CHANGEOVER VALVE
JP5916139	A fixing method of the connecting fitting in a four-way switching valve, and a piston, and a welding process of the fixed screw in a four-way switching valve

NAKAJIMA KOMEI (JP)
TASHIRO YUSUKE (JP)

PCT/JP2019/027940

January 21, 2021

July 16, 2019

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MITSUBISHI ELECTRIC CORP (JP)

F16K11/065

JP2004245427A	2004-09-02
JPH0525271U	1993-04-02
JP2012193855A	2012-10-11
JPS58124871A	1983-07-25
JPS52152422U	1977-11-18
JPS5443324A	1979-04-05
JPS607465U	1985-01-19
JPH01314870A	1989-12-20

See also references of EP 4001716A4

FUKAMI PATENT OFFICE, P.C. (JP)

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