PRESSURE CONTROL VALVE AND VAPOR COMPRESSION REFRIGERATION CYCLE DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a pressure control valve allowing quick and sure inspection of a leak of a sealed chamber and for operating a vapor compression refrigeration cycle device at the maximum COP by optimally controlling it. SOLUTION: The sealed chamber 25 of a bellows device 21 for driving a valve element 20 to open and close is sealed with a halogen group refrigerant and nitrogen gas. COPYRIGHT: (C)2004,JPO