Patent ID: 7690218

Claim:
An ejector refrigerant cycle device comprising: a compressor compressing and discharging refrigerant; a radiator radiating heat of high-temperature and high-pressure refrigerant discharged from the compressor; a branch portion branching a flow of refrigerant on a downstream side of the radiator into a first stream and a second stream; an ejector located on a downstream side of the branch portion, the ejector including a nozzle portion decompressing and expanding refrigerant of the first stream, and a refrigerant suction port from which refrigerant is drawn from the second stream by a high-velocity flow of refrigerant jetted from the nozzle portion; means for decompressing and expanding refrigerant of the second stream from the branch portion; an evaporator evaporating refrigerant on a downstream side of the decompressing means, the evaporator being disposed in the second stream and having a refrigerant outlet coupled to the refrigerant suction port of the ejector; and means for radiating heat from the refrigerant while the decompressing means decompresses and expands the refrigerant in the radiating means, the radiating means being disposed in the second stream.