Patent ID: 7856818
Filing Date: 2010-12-28
Classification: F04B,F04C

Abstract:
1. A compressor that compresses refrigerant gas containing oil, the compressor comprising: a discharge chamber into which the compressed refrigerant gas is discharged; a discharge passage connected to the discharge chamber; an oil separation device that is provided in the discharge passage in such a manner as to define a separation chamber in the discharge passage and centrifugally separate the oil from the refrigerant gas by causing the refrigerant gas that has been introduced into the separation chamber to swirl, wherein the separation chamber has a cylindrical shape; an oil reservoir chamber that communicates with the separation chamber through an oil passage and retains the oil separated from the refrigerant gas in the separation chamber, wherein the oil reservoir chamber communicates with a low pressure zone in the compressor the pressure of which is lower than the pressure in the discharge chamber; and a filter that is provided between the separation chamber and the oil passage and extends along a swirling direction of the refrigerant gas in the separation chamber, wherein the filter is arranged along an inner wall surface of the cylindrical separation chamber.