| 摘要 |
PROBLEM TO BE SOLVED: To provide the air discharging method of a refrigerating cycle capable of removing quickly air and moisture, existing in a refrigerant circuit and machine oil. SOLUTION: The closed circuit of a refrigerating cycle 1, formed of the closed circuit connecting a compressor 2, a condenser 3, a dryer 4, a capillary tube 5 and an evaporator 6, is evacuated through an air discharging pipe 7, connected to the low-pressure side of the compressor 2 while heating the compressor 2 by hot air from the outside of the same.
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