| 摘要 |
PROBLEM TO BE SOLVED: To improve cooling effect by supercooling a refrigerant that is unloaded from a heat exchanger. SOLUTION: In an air-conditioning device 1, a compressor 2, an outdoor heat exchanger 7, a pressure reduction device 20, and an indoor heat exchanger 21 are connected for circulating a refrigerant. The air-conditioning device 1 is provided with the refrigerant supercooling mechanism of the air-conditioning device, where the liquid refrigerant extraction port of a gas/liquid separator 35 in the middle of the outdoor heat exchanger 7 is connected to the inlet of a heat transfer pipe 30, in a cooling receiver 12 that is provided between the outlet of the outdoor heat exchanger 21 and the pressure reduction device 20 via a first throttle valve 37, and the outlet of the heat transfer pipe 30 is connected to the inlet of the compressor 2. A second throttle valve 10 is provided between the outlet of the outdoor heat exchanger 7 and the cooling receiver 12, thus promoting the supercooling of the refrigerant in the receiver 12.
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