Patent ID: 7320229

Claim:
An ejector refrigeration cycle comprising: a compressor that suctions and compresses refrigerant; a radiator that releases heat from high pressure refrigerant, which is discharged from the compressor; an ejector that includes: a nozzle portion that depressurizes and expands refrigerant, which is supplied from an outlet of the radiator; a refrigerant suction inlet, from which refrigerant is suctioned by a high velocity refrigerant flow that is discharged from the nozzle portion; and a pressurizing portion that decelerates and pressurizes a refrigerant flow, in which the high velocity refrigerant flow discharged from the nozzle portion and the suctioned refrigerant supplied from the refrigerant suction inlet are mixed; a branch passage that is branched at a point on an upstream side of the ejector and is connected to the refrigerant suction inlet; a throttle mechanism that is provided in the branch passage and includes a capillary tube; and an evaporator that is arranged on a downstream side of the throttle mechanism in the branch passage.