TWO STAGE ROTARY COMPRESSOR

摘要

A 2-stage rotary compressor is provided to improve compression efficiency by coupling a lower bearing with a lower cover by a gasket and a second bolt for preventing the deformation of the lower cover and keeping airtightness between the lower bearing and the lower cover. A lower bearing(161) and an upper bearing(162) are coupled with a low pressure cylinder(121) and a high pressure cylinder(131) by a first bolt(B1). A lower cover(171) is coupled with a lower bearing by a second bolt(B2) which is shorter than the first one. A gasket(G) is positioned between the lower bearing and the lower cover to be coupled therewith by the second bolt.