压缩机在运转中,压缩机排气出口冷媒通常含有大量的冷冻机油，为了***压缩机不致流失大量冷冻机油，及防止冷冻机油随着冷媒流向系统中影响冷凝器散发热功能，及蒸发器的制冷效果，所以在压缩机和冷凝器之间必须装一台油分离器，使冷冻机油和冷媒分离，让油自动回入压缩机曲轴箱内。回油装置是以油分离器内底部的浮球阀操作，再由高低压差原理一起完成。***压缩机不缺油，以达到的制冷效果。
When compressor is in operation, the outlet of compressor always has lots of refrigerant oil. We need to install an oil separator between compressor and condenser to separate the refrigerant oil and refrigerants in order to prevent the compressor not lose too much refrigerant oil and prevent the refrigerant oil flow to system with refrigerants to interfere the condenser’s heat function and evaporator cooling function. Then the oil will flow back to the compressor crankcase. Oil-return device operates on the ball valve moving on the bottom of oil separator and the high-low voltage theory. The oil separator can ensure the sufficiency of oil in compressor and let the compressor reach its best cooling performance.
