| 摘要 |
PROBLEM TO BE SOLVED: To enhance stability and reliability of a compressor by collecting delivered oil quickly. SOLUTION: In a refrigeration cycle comprising a compressor 1, a condenser 2, a pressure reducing means, and an evaporator coupled sequentially through piping, the delivery side piping 1b of the compressor 1 is coupled with one side 6b of a substantially T-shaped coupling pipe 6, while directing the lower end 6a thereof downward. The lower end 6a of the coupling pipe 6 is coupled with a inlet side piping 2a of a condenser 2, and a capillary tube 7 is provided between the other side 6c of the coupling pipe 6 and an inlet side 4a of a gas/ liquid separator 5. According to the arrangement, oil can be separated quickly from delivered refrigerant and returned to the compressor 1.
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