Patent ID: 6634567
Filing Date: 2003-10-21
Classification: F25B

Abstract:
An expansion valve unit having a pressure detecting function, comprising:a supercooling control expansion valve disposed in a flow path of a refrigerant sent into an evaporator of a refrigeration system constituting a refrigerating cycle to control a flow rate of the refrigerant; a pressure detector provided at one end of the supercooling control expansion valve to detect a pressure of the refrigerant sent thereto through a refrigerant passage in said supercooling control expansion valve; joining means for integrally joining said pressure detector to said supercooling control expansion valve; a hermetic seal member disposed near a joint between said supercooling control expansion valve and said pressure detector to prevent leakage of the refrigerant; and a hermetically sealed space formed in a block constituting a base body of said supercooling control expansion valve, said hermetically sealed space surrounding a flow rate control member incorporated in said supercooling control expansion valve, and said hermetically sealed space communicating with said refrigerant passage.