| 摘要 |
PROBLEM TO BE SOLVED: To prevent the backflow of liquefied refrigerant from a radiator 5 side via an oil separator 13 to a compressor 4. SOLUTION: The compressor 4, the oil separator 13 and a receiver tank 14 are arranged at a lower stage than the radiator 5, and a refrigerant trap 53 is provided in a refrigerant pipe 55 connecting the radiator 5 to the oil separator 13 for preventing the return of the liquefied refrigerant to the oil separator 13. Herein, a peak position P1 of the refrigerant trap 53 is higher than the position of a refrigerant inlet 54 of the radiator 5. Thus, the backflow of the liquefied refrigerant from the radiator 5 to the oil separator 13 is prevented. COPYRIGHT: (C)2005,JPO&NCIPI
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