A refrigeration cycle device is provided with a pilot-operated on-off valve. When the pilot-operated on-off valve (22), which functions as a refrigerant circuit switching device, opens a bypass passage (second refrigerant passage)(14b) for connecting the high-pressure-side section and the low-pressure-side section of the cycle, a pilot valve (222) opens an outlet opening-side connection passage (221d) while a refrigerant passage through which a refrigerant having flowed out of the pilot-operated on-off valve (22) flows is closed. As a result, a main on-off valve (221) opens a main passage (220c) after a refrigerant pressure (P2) on the outlet opening (220b) side is equalized with a high-pressure-side refrigerant pressure (P1) at the inlet opening (220a) so that the refrigerant pressure (P2) is close to the high-pressure-side refrigerant pressure (P1), and consequently, refrigerant flow noise occurring when the pilot-operated on-off valve (22) is opened can be reduced without reducing the high-pressure-side refrigerant pressure.
Refrigeration cycle device and pilot-operated on-off valve
2015-06-10
Patent
Electronic Resource
English
IPC: | F25B Kältemaschinen, Kälteanlagen oder Kälteverfahren , REFRIGERATION MACHINES, PLANTS, OR SYSTEMS / B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht |
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