在大中型氨制冷装置中，对于压缩机采用原始的人工加油现象是目前全疆制冷系统操作中较为普遍的一种方式。众所周知，压缩机运行工况的好与坏，直接与机内润滑油量有关，冷冻油在氨制冷系统中兼负着三个作用，润滑、冷却与密封。因而对压缩机运行时，曲轴箱内能否保持其正常油 In the large and medium-sized ammonia refrigeration unit, the original manual refueling of the compressor is one of the more common cooling systems in operation in Xinjiang at present. As we all know, compressor operating conditions are good and bad, directly related to the amount of lubricant in the machine, refrigeration oil in the ammonia refrigeration system also plays three roles, lubrication, cooling and sealing. Thus whether the crankcase can hold its normal oil to the compressor during operation