| 摘要 |
PROBLEM TO BE SOLVED: To achieve stable cooling effect by suppressing the generation of freezing in an indoor heat exchanger at the time of refrigeration operation while an outdoor air temperature is low even if a non-azeotropic mixed refrigerant is adopted. SOLUTION: In an air-conditioning device 10 where a compressor 16, an outdoor heat exchanger 19, an expansion valve 22, an indoor heat exchanger 21, and an accumulator 17 are successively connected for composing a loop- shaped refrigerant circuit 9, and a non-azeotropic mixed refrigerant is circulated in the refrigerant circuit, a refrigerant with a high boiling point is stored in the accumulator and a refrigerant with a low boiling point is circulated in the refrigerant circuit out of the non-azeotropic mixed refrigerants.
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