TWO STAGE ROTARY COMPRESSOR

摘要

A 2-stage rotary compressor is provided to prevent the leakage of refrigerant from contact portions of between a bearing and a cover around a rotation shaft by mounting an O-ring therebetween. A bearing(161) is connected to low and high pressure compression assemblies and has a mounting part for a rotation shaft. A cover(171) is coupled with the bearing for forming an intermediate pressure chamber(Pm) in which primarily compressed refrigerant is mixed with refrigerant introduced from the outside at low pressure before secondary compression. A sealing element such as an O-ring(R) is mounted between the mounting part of the bearing and the cover for preventing the refrigerant from leaking out of the intermediate pressure chamber.