Two-stage rotary type compressor with filter

摘要

An internal intermediate pressure multistage compression type rotary compressor (10) comprising an electric element (14) in a hermetic shell case (12), and first and second rotary compression elements (32), (34) being driven by the electric element (14), wherein refrigerant compressed by said first rotary compression element (32) is discharged into the hermetic shell case (12), and the discharged intermediate pressure refrigerant is compressed by said second rotary compression element (34): said multistage compression type rotary compressor (10) further comprising a refrigerant introduction pipe (92) for introducing the refrigerant in the hermetic shell case (12) into the second rotary compression element (34); and a filtering means provided at the inlet (92A) of the refrigerant introduction pipe (92); or a filtering means provided at an outlet of the refrigerant introduction pipe (92); or a filtering means provided in the refrigerant introduction pipe (92).