| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a compression refrigerating machine and a method for recovering lubricating oil for the same, performing stable operation by appropriately recovering the lubricating oil mixed into a refrigerant circulation system. Ž<P>SOLUTION: An evaporator 10, a compressor 13, and a condenser 15 are connected to one another through refrigerant pipes 20, and also a lubricating oil circulation system is provided for supplying the lubricating oil in a lubricating oil tank 33 to the bearing 25 of the compressor 13. The compression refrigerating machine includes: a refrigerant regeneration tank 45 provided with a heater 47 heating a refrigerant with the lubricating oil dissolved to separate the lubricating oil from refrigerant vapor; a pipe 55 connecting the refrigerant regeneration tank 45 to the evaporator 10 to transfer a refrigerant liquid with the lubricating oil in the evaporator 10 dissolved into the refrigerant regeneration tank 45; a pipe 61 connecting the refrigerant regeneration tank 45 to the evaporator 10 to transfer the refrigerant vapor separated from the lubricating oil in the refrigerant regeneration tank 45 into the evaporator 10; and a pipe 65 connecting the refrigerant regeneration tank 45 to the lubricating oil tank 33 to transfer the lubricating oil separated from the refrigerant vapor in the refrigerant regeneration tank 45 into the lubricating oil tank 33. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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