| 摘要 |
PROBLEM TO BE SOLVED: To provide a compressor oil equalization device capable of stably equalizing refrigerating machine oil among outdoor units with a simple constitution in a refrigerating machine. SOLUTION: This compressor oil equalization device 51 is constituted by connecting oil equalizing units 52-54 respectively disposed in outdoor units 2-4 by an unit-unit oil equalizing pipe 55. Each of oil equalizing units 52-54 has a gas-liquid separating means 63 connected with a compressor 10, 11, 30, 31, 40, 41, an oil return pipe 64 connecting a first outflow end of the gas-liquid separating means and a suction branch pipe 23A, 23B of the compressor, an oil equalizing pipe 66 connecting a second outflow end of the gas-liquid separating means and suction piping 23, and an equalized oil collection pipe 68, and the oil return pipe 64 and the oil equalizing pipe 66 are provided with capillary tubes 65, 67. The oil equalizing collection pipes 68 of the outdoor units 2-4 are connected by the unit-unit oil equalizing pipe 55, and the unit-unit oil equalizing pipe 55 is connected with a collected gas pipe 5 and a collected liquid pipe 6 through first and second check valves 70, 71. COPYRIGHT: (C)2007,JPO&INPIT
|
