| 摘要 |
PROBLEM TO BE SOLVED: To construct a gas injection cycle in a plurality of different operation modes of a refrigerant circuit, in a refrigeration cycle device including an ejector as a refrigerant decompression means.SOLUTION: In an air-heating mode, the refrigerant circuit is switched for decompressing a refrigerant flowing out from an indoor condenser 12 by the ejector 14, allowing the refrigerant to flow into a gas-liquid separator 15, allowing the separated gas-phase refrigerant to be sucked to an intermediate-pressure suction port 11b of a compressor 11, and allowing the separated liquid-phase refrigerant to successively flow to, at least, a second variable throttle mechanism 17 → an indoor evaporator 20 → a suction port 11a of the compressor 11, and in an air-cooling mode, the refrigerant circuit is switched for decompressing the refrigerant flowing out from the indoor condenser 12 in a first variable throttle mechanism 16 through an outdoor heat exchanger 18, allowing the same to flow to the gas-liquid separator 15, allowing the separated gas-phase refrigerant to be sucked to the intermediate-pressure suction port 11b of the compressor 11, and allowing the separated liquid-phase refrigerant to successively flow to the second variable throttle mechanism 17 → the indoor evaporator 20 → the suction port 11a of the compressor 11. |
