Patent ID: 7428826

Claim:
An ejector cycle device comprising: a compressor for compressing refrigerant; a refrigerant radiator disposed to radiate heat of refrigerant discharged from the compressor; an ejector which includes a nozzle portion for decompressing and expanding refrigerant from the refrigerant radiator, a refrigerant suction port from which refrigerant is drawn by a refrigerant steam jetted from the nozzle portion, and a pressure-increasing portion in which the refrigerant jetted from the nozzle portion and the refrigerant drawn from the refrigerant suction port are mixed and pressure of the refrigerant is increased by converting speed energy to pressure energy; a first evaporator for evaporating refrigerant flowing out of the ejector; a first branch passage, which is branched from a position between a refrigerant downstream side of the refrigerant radiator and an upstream side of the nozzle portion, and is connected to the refrigerant suction port of the ejector; a first throttle member disposed in the first branch passage to decompress refrigerant flowing from the refrigerant radiator; a second evaporator disposed in the first branch passage between the first throttle member and the refrigerant suction port of the ejector; and a gas-liquid separator located between a refrigerant outlet of the first evaporator and a refrigerant suction side of the compressor for separating refrigerant into gas refrigerant and liquid refrigerant, wherein the gas-liquid separator has only a single outlet from which the separated gas refrigerant is introduced to the refrigerant suction side of the compressor; wherein the gas liquid separator includes an inlet which receives refrigerant directly from the first evaporator.