| 摘要 |
PROBLEM TO BE SOLVED: To provide a refrigeration cycle system using a non-azeotropic mixed refrigerant that is small in the number of connection points to a composition separation circuit for varying circulating compositions in a refrigeration cycle, simple in refrigerant circuit structure, and easy to manufacture. SOLUTION: The refrigeration cycle system using a non-azeotropic mixed refrigerant comprises: a heat source unit 62 comprising the refrigeration cycle that connects in a loop a compressor 1, a refrigerant passage four-way valve 2, a usage side heat exchanger 5, a first decompressor 4 and a heat source side heat exchanger 3 and circulates a non-azeotropic mixed refrigerant comprising a low boiling point refrigerant and a high boiling point refrigerant; a composition separation unit 63 comprising the composition separation circuit that has a refrigerant rectifier 11 whose upper section is connected in a loop with a first cooler 13 and a refrigerant reservoir 14 and whose lower section is connected to second cooler 12 so as to separate the compositions of the non- azeotropic mixed refrigerant; and first piping and second piping connecting the refrigeration cycle unit 62 and the separation circuit unit 63 at two points.
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