Patent ID: 7779647

Claim:
An ejector cycle device comprising: a compressor drawing and compressing refrigerant; a radiator radiating heat of high-pressure refrigerant discharged from the compressor; an ejector which includes a nozzle portion converting a pressure energy of high-pressure refrigerant on a downstream side of the radiator to a velocity energy to decompress and expand refrigerant, and a suction port for drawing refrigerant by a jet flow from the nozzle portion; a branch portion separating the refrigerant flow from a refrigerant passage from the radiator into an ejector passage coupled directly to the nozzle portion of the ejector; and a branch passage coupled to the suction port of the ejector; a throttle unit arranged in the branch passage, the throttle unit decompressing refrigerant; an evaporator arranged on a downstream side of refrigerant flow of the throttle unit in the branch passage, the evaporator evaporating refrigerant; and a flow control unit arranged in the refrigerant passage between the radiator and the ejector, the flow control unit controlling a flow rate of refrigerant.