| 摘要 |
PROBLEM TO BE SOLVED: To even and optimize quantity of oil retained by a plurality of compressor and to avoid drop of density of refrigerating machine oil in a compressor shell when continuous liquid back occur. SOLUTION: The system is provided with a refrigerating cycle connecting a plurality of compressors connected in parallel, a condenser, a pressure reducing device, an evaporator, an accumulator in order, and is provided with an oil collecting circuit retaining refrigerating machine oil in the accumulator and collecting excessive oil in compressor shell. An oil separator will be provided between the compressor and the condenser Moreover, an oil separator is provided between a compressor and a condenser, and a oil return circuit to return refrigerating machine oil separated by the oil separator to the accumulator is provided. COPYRIGHT: (C)2004,JPO
|
