我国中、小型活塞式氟利昂制冷压缩机目前已从传统的开启式机型逐步过渡为新的封闭式机型。新的型式是将压缩机的机体和驱动电动机连结成一体,外壳形成半封闭或全封闭整体,因此称为全封闭或半封闭制冷压缩机。开启式机器的机体与电动机分离,须依靠联轴器或皮带轮联接,联接处的轴封磨损后,容易造成泄漏。封闭式机器革除了这种弊病且具有结构紧凑,效率高和噪音低的优点,近年来我国引进技术的压缩机产品都属这种型式。国内尽管有了上述工艺技术较为先进的压缩机主机生产,但一般情况下对辅机生产仍 China’s medium and small piston Freon refrigeration compressor has now gradually transformed from the traditional open-type models for the new closed-end models. The new type is the compressor body and drive motor connected into one, the case to form a semi-closed or fully enclosed whole, it is called a fully enclosed or semi-enclosed refrigeration compressor. Open the body of the machine and the motor separation, relying on the coupling or pulley coupling, shaft coupling wear Department, easily lead to leakage. Closed-end machine in addition to this malady ills and has the advantages of compact structure, high efficiency and low noise, the introduction of technology in China in recent years, this is the type of compressor products. Although the domestic production of the compressor with the more advanced process technology, but in general the production of auxiliary machinery is still