Patent ID: 8186971
Filing Date: 2012-05-29
Classification: F04C

Abstract:
1. A multistage compressor, wherein an electric motor is disposed in a substantially central section inside a sealed housing, a low-stage compression mechanism and a high-stage compression mechanism that are driven by the electric motor via a rotary shaft are disposed below and above to flank the electric motor, respectively, intermediate-pressure refrigerant gas compressed by the low-stage compression mechanism is discharged into the sealed housing, and the intermediate-pressure refrigerant gas is taken in by the high-stage compression mechanism so as to be compressed in two stages, wherein an oil separator plate that centrifugally separates lubricating oil contained in the intermediate-pressure refrigerant gas, which is taken in by the high-stage compression mechanism after passing through the electric motor, is provided at one end of a rotor of the electric motor such that the rotary shaft extends through the oil separator plate.