Gas compressor

Abstract

To provide a gas compressor capable of reducing the pressure loss of the oil containing high-pressure refrigerant gas and achieving an improvement in compressor performance. In a construction in which oil containing high-pressure refrigerant gas discharged from cylinder discharge holes passes through discharge chambers and discharge gas passages to be led to oil separation filters side attached to an oil separator, the discharge gas passages are linear, whereby the oil containing high-pressure refrigerant gas flows smoothly through the discharge gas passages, and the pressure loss of the oil containing high-pressure refrigerant gas is reduced. Further, the height of inlet openings of the discharge gas passages are set to be the same as the height of outlet openings, whereby the discharge gas passages extend horizontally and are of the shortest length, thereby further reducing the pressure loss of the high-pressure refrigerant gas.

What is claimed is:  
     
         1 . A gas compressor comprising: 
 a cylinder arranged between a pair of side blocks;    a rotor horizontally arranged in the cylinder so as to be rotatable;    vanes provided so as to be capable of jutting out toward the inner wall of the cylinder from the outer peripheral surface of the rotor and retracting therein;    compression chambers defined by the cylinder, side blocks, rotor, and vanes;    cylinder discharge holes for discharging refrigerant gas from the compression chambers;    a discharge chamber for temporarily storing the refrigerant gas discharged from the cylinder discharge holes;    a linear discharge gas passage for guiding the refrigerant gas from the discharge chamber to the downstream side of the discharge chamber;    an oil separator arranged on the downstream side of the discharge gas passage and having an oil separation filter for separating the refrigerant gas and the oil from each other; and    a discharge chamber for temporarily storing the refrigerant gas and the oil separated by the oil separation filter.    
     
     
         2 . A gas compressor according to  claim 1 , wherein the height of an outlet opening on the oil separator side of the discharge gas passage is set to be the same as the height of an inlet opening of the discharge gas passage, whereby the discharge gas passage extends horizontally.  
     
     
         3 . A gas compressor according to  claim 2 , wherein the oil separation filter of the oil separator is positioned above the outlet opening of the discharge gas passage.