| 摘要 |
PROBLEM TO BE SOLVED: To simply and surely secure an appropriate quantity of oil for each compressor when a plurality of compressors are connected in parallel with one another. SOLUTION: In an outdoor unit 2 of this refrigerator 1, the first, second and third compressors 10, 11 and 12 are connected in parallel with one another. A first compressor oil equalization device 31 is connected to the first compressor 10. The first compressor oil equalization device 31 includes a connection tube 32 connected to a pressure vessel of the first compressor 10, a gas-liquid separation means 33, an oil return tube 34 for running a liquid flowing out from the gas-liquid separation means 33, and an oil equalization tube 36 for mainly running gas flowing out from the gas-liquid separation means 33. The oil return tube 34 is connected to a suction branch tube 23A of the first compressor 10, and the oil equalization tube 36 joins to oil return tubes 38 and 39 of second and third compressor oil equalization devices 41 and 51 and is thereafter connected to a suction pipe 23. COPYRIGHT: (C)2007,JPO&INPIT |
