To reduce cost by lowering pressure resistance strength and repeated pressurization strength in a heat exchanger being a heat absorber in a cooling operation mode when two heat exchangers arranged in a vehicle cabin are used as a radiator in a heating operation mode and either of them is used as the heat absorber in the cooling operation mode.
A heat pump device 20 includes: a refrigerant inlet 50a connected to a downstream cabin heat exchanger 31; a heating side refrigerant outlet 50b connected to an upstream cabin heat exchanger 32; an unheated side refrigerant outlet 50c connected to a portion other than the upstream cabin heat exchanger 31 in the heat pump device 20; and a switch valve 50d making the refrigerant inlet 50a communicate with the unheated side refrigerant outlet 50c when an internal pressure in the upstream cabin heat exchanger 32 reaches a predetermined one.
FUKAWATASE KOHEI
OTAKE NORIHIKO
KOMORI AKIRA
MATSUMOTO KO
WAKANO KATSUYOSHI
PANASONIC CORP
| JP2011255734A | 2011-12-22 | |||
| JPS62218769A | 1987-09-26 | |||
| JPH1044758A | 1998-02-17 | |||
| JPH0796739A | 1995-04-11 | |||
| JP2007271181A | 2007-10-18 | |||
| JPS5457656U | 1979-04-20 |
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