| 摘要 |
PROBLEM TO BE SOLVED: To provide a refrigeration cycle device capable of returning oil accumulated in a receiver tank to a compressor in a sufficiently cooled state and thereby avoiding a failure in the compressor.SOLUTION: A refrigeration cycle device includes: a compressor 2 compressing refrigerant; a radiator 5 radiating heat from the refrigerant compressed by the compressor 2; a receiver tank 7 storing oil flowing from the compressor together with the refrigerant from which the heat is radiated by the radiator 5; an expansion valve 11 decompressing the refrigerant flowing from the receiver tank 7; an evaporator 13 causing the refrigerant decompressed by the expansion valve 11 to absorb heat; a refrigerant pipe sequentially connecting the compressor 2, the radiator 5, the receiver tank 7, the expansion valve 11, and the evaporator 13; an oil return pipe 15 returning the oil stored in the receiver tank 7 to the compressor 2; and an internal heat exchanger 16 that causes heat exchange between a low pressure pipe 14 returning the refrigerant absorbing the heat by the evaporator 13 to the compressor 2 and the oil return pipe 15. |
