Patent ID: 6318981
Filing Date: 2001-11-20
Classification: F04C

Abstract:
A two-cylinder type two-stage rotary compressor comprising: a closed container; an electric motor portion accommodated in said closed container; two cylinders driven by a rotating shaft of said electric motor portion; and a rotary compression mechanism portion which eccentrically rotate rollers fitted to eccentric portions provided to said rotating shaft in said respective cylinders, partitions the inside of said respective cylinders by vanes, and sucks and compresses a low-pressure refrigerant gas to be discharged, said rotary compression mechanism portion including: a low stage side compression portion for sucking a low pressure refrigerant gas to be compressed; a high stage side compression portion for sucking and compressing the refrigerant gas which is compressed by said low stage side compression portion to be boosted to have an intermediate portion; and an intermediate partition plate provided between said both compression portions to insert said rotating shaft therethrough,wherein two eccentric portions provided to said rotating shaft has a phase difference of 180 degrees, and a connecting portion for connecting said both eccentric portions has a cross-sectional shape such that the thickness in a direction orthogonal to an eccentric direction is set larger than the thickness in the eccentric direction.