一、制冷装置制冷装置是客车空气调节装置中的最重要设备。其结构和原理都比较复杂,运用操作和维修保养技术要求较高。制冷装置的作用是夏季使车内降温,这对旅客和车上工作人员来说都是至关重要的,尤其是南方各路局。目前,我国十分重视这个问题,并已决定自现在开始逐步把所有新型客车都装设空 First, the refrigeration unit Refrigeration device is the bus air conditioning device in the most important equipment. The structure and principle are more complex, the use of operation and maintenance of high technical requirements. The role of the refrigeration unit is to cool the interior of the car in summer, which is of crucial importance to both passengers and car staff, especially in the South. At present, our country attaches great importance to this issue and has decided that all new types of passenger vehicles will be gradually installed from now on