Refrigeration cycle device

A refrigeration cycle device comprising:

• a compressor configured to compress and discharge a refrigerant;
• a radiator configured to radiate heat of the refrigerant discharged from the compressor;
• a first decompression valve configured to decompress the refrigerant having passed through the radiator;
• a first evaporator that exchanges heat between the refrigerant decompressed by the first decompression unit and air to be supplied to a space to be air conditioned, to evaporate the refrigerant;
• a second decompression valve that is disposed in parallel with the first decompression valve on a downstream side of the radiator to decompress the refrigerant having passed through the radiator;
• a second evaporator that exchanges heat between the refrigerant decompressed by the second decompression unit and a heat medium that absorbs heat from a heat generating device, and evaporates the refrigerant;
• a refrigerant joint provided on a refrigerant suction side of the compressor, to join the refrigerant having passed through the first evaporator and the refrigerant having passed through the second evaporator;
• a first physical quantity detector disposed between the first evaporator and the refrigerant joint to detect a first physical quantity having a correlation with a degree of superheating of the refrigerant flowing between the first evaporator and the refrigerant joint;
• and
• a second physical quantity detector disposed between the refrigerant joint and the compressor to detect a second physical quantity having a correlation with the degree of superheating of the refrigerant flowing between the refrigerant joint and the compressor, wherein
• the first decompression valve is configured to regulate the degree of superheating of the refrigerant between the first evaporator and the refrigerant joint to a first target degree based on the first physical quantity, and
• the second decompression valve is configured to regulate the degree of superheating of the refrigerant between the refrigerant joint and the compressor to a second target degree based on the second physical quantity.