| 摘要 |
PURPOSE: An ejector cycle system is provided to improve coefficient of performance while keeping the balance of the ejector cycle system by decompressing refrigerant by a variable throttle and a nozzle. CONSTITUTION: An ejector cycle system includes a compressor(100) sucking and compressing refrigerant; a radiator(200) cooling refrigerant discharged from the compressor; an evaporator(300) evaporating refrigerant; an ejector(400) having a nozzle in which a pressure energy of high-pressure side refrigerant flowing from the radiator is converted to a speed energy so that refrigerant is decompressed and expanded, and a pressure-increasing portion in which the speed energy is converted to the pressure energy so that the pressure of refrigerant is increased while refrigerant discharged from the nozzle and refrigerant sucked from the evaporator are mixed; a pressure reduction unit disposed to the upstream portion of the nozzle from the flowing direction of refrigerant, to decompress refrigerant discharged from the radiator; and a gas-liquid separator(500) separating refrigerant into gas refrigerant and liquid refrigerant.
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