| 摘要 |
PROBLEM TO BE SOLVED: To suppress the composition change in a refrigerant that is circulated even if a load is changed in eight case of cooling or heating. SOLUTION: With a circulation refrigerant in a refrigeration cycle as a non-azeotropic mixed refrigerant, the refrigerant compressed by a compressor 1 in heating is condensed by an indoor heat exchanger 3, flows from a check valve 5 on the inlet side of a receiver 8 to the receiver 8 and is decompressed, and passes through the check valve 6, flows into the outdoor heat exchanger 10, and returns to the compressor 1. In cooling, the refrigerant compressed by the compressor 1 is compressed by the outdoor heat exchanger 10, flows from the check valve 4 on the inlet side of the receiver 8 to the receiver 8 and is compressed by an expansion valve 9, passes through the check valve 7 and flows into the indoor heat exchanger 3 and then returns to the compressor 1. Since the refrigerant flows in the order of the receiver to decompression device in both cooling and heating, the refrigerant of a small degree of dryness flows into the receiver, thus the composition change in the circulation refrigerant can be suppressed even if a load is changed. |
