Patent ID: 6925835

Claim:
An ejector cycle comprising: a compressor for drawing and compressing refrigerant; a high-pressure heat exchanger for cooling high-pressure refrigerant discharged from the compressor; a low-pressure heat exchanger for evaporating low-pressure refrigerant after being decompressed; an ejector including a nozzle for decompressing and expanding refrigerant flowing from the high-pressure heat exchanger by converting pressure energy of refrigerant to speed energy of the refrigerant, and a pressure-increasing portion that is disposed to increase a pressure of refrigerant by converting the speed energy of refrigerant to the pressure energy of refrigerant while mixing refrigerant jetted from the nozzle and refrigerant sucked from the low-pressure heat exchanger; and a gas-liquid separator for separating refrigerant from the ejector into gas refrigerant and liquid refrigerant, the gas-liquid separator having a gas refrigerant outlet coupled to a refrigerant suction side of the compressor, and a liquid refrigerant outlet coupled to a refrigerant inlet of the low-pressure heat exchanger, wherein the refrigerant flows through the low-pressure heat exchanger upwardly from below.