Patent ID: 7624930

Claim:
A temperature-type expansion valve comprising: a valve housing having a first passage into which a high pressure refrigerant flows, a second passage through which a low pressure refrigerant flowing to an evaporator flows, a third passage through which a refrigerant on the outlet side of said evaporator flows, and a throttle passage communicating with said first passage; a valve body having a communication port facing said throttle passage; and an operation rod for driving said valve body in an interlocking arrangement with a displacement member undergoing displacement in accordance with a pressure difference between a saturation pressure corresponding to an outlet temperature of the refrigerant flowing through said third passage and an evaporation pressure of said evaporator; wherein a slide hole communicating with said throttle passage and accommodating said valve body is formed in said valve housing; and said valve body moves inside said slide hole in the interlocking arrangement with said operation rod to thereby adjust an overlapped sectional area of said throttle passage and said communication port.