Patent ID: 7220110
Filing Date: 2007-05-22
Classification: F04C,F25B,Y10S

Abstract:
1. A compressor, having an electric motor element and a rotary compression mechanism driven by the electric motor element in a sealed container, wherein the rotary compression mechanism is constructed by a first and a second rotary compression elements, and wherein a refrigerant compressed by the first rotary compression element is discharged to the sealed container and the discharged refrigerant with an intermediate pressure is compressed by the second rotary compression element and then discharged to the exterior, the compressor comprising: an oil accumulator for separating oil discharged from the second rotary compression element together with the refrigerant and for accumulating the oil, wherein the oil accumulator is formed in the rotary compression mechanism; and a return passage having a throttling function, wherein the oil accumulator is connected to the sealed container through the return passage.