Patent ID: 7086244
Filing Date: 2006-08-08
Classification: F04C,F25B

Abstract:
1. A refrigerant cycle apparatus in which a refrigerant circuit is constituted by sequentially connecting a compressor, a gas cooler, throttling means and an evaporator, the compressor including first and second compression elements which are driven by a drive element, sucking a refrigerant into the first compression element from a low-pressure side of the refrigerant circuit and compressing it, discharging it into a sealed container, sucking the refrigerant with an intermediate pressure in the sealed container into the second compression element, compressing it and discharging it to a high-pressure side of the refrigerant circuit, the refrigerant cycle apparatus comprising: a bypass circuit which causes an intermediate-pressure area to communicate with a low-pressure side of the refrigerant circuit or causes a high-pressure side to communicate with the intermediate-pressure area; a valve device provided to the bypass circuit; and a control device which controls opening/closing of the valve device, wherein the control device constantly closes the valve device but opens it in order to release a flow path of the bypass circuit when the compressor stops.