Patent ID: 8186180

Claim:
An ejector-type refrigerant cycle device, comprising: a compressor that sucks and compresses refrigerant; a radiator that radiates heat from high-pressure refrigerant discharged from the compressor; an ejector having a nozzle portion that depressurizes and expands refrigerant on a downstream side of the radiator, and a refrigerant suction port through which refrigerant is sucked by the flow of refrigerant jetted at high speed from the nozzle portion; a first evaporator having a refrigerant outflow side connected to a suction side of the compressor and is further connected the to a refrigerant outflow side of the ejector; a first branch passage that branches a flow of refrigerant upstream of the ejector and guides the branched flow of refrigerant to the refrigerant suction port; a first throttling means that is disposed in the first branch passage and depressurizes and expands refrigerant; a second evaporator that is disposed in the first branch passage downstream of the first throttling means; a bypass passage that guides the high-pressure refrigerant discharged from the compressor directly into the second evaporator; and a first shut mechanism that is provided in the bypass passage, wherein: a refrigerant evaporating pressure of the second evaporator is lower than a refrigerant evaporating pressure of the first evaporator, and the first shut mechanism is constructed to be normally closed, and to open the bypass passage when the second evaporator is defrosted.