Linear Compressor

Abstract

A linear compressor comprising a cylinder, a hydraulically borne piston that can be longitudinally oscillated inside the cylinder, and a drive unit driving the movement of the piston. The compressor is characterized in that at least one of the lateral faces of the piston and the cylinder that face each other is provided with an abrasion-resistant bearing coating.

1 - 5 . (canceled)  
     
     
         6 . A linear compressor comprising: 
 a cylinder including a cylinder lateral face;    a hydraulically borne piston which moves in an oscillating fashion in a longitudinal direction of the cylinder and includes a piston lateral face; and    a drive unit driving the movement of the piston, wherein at least one of the lateral faces of the piston and of the cylinder that face each other is provided with an abrasion-resistant bearing coating.    
     
     
         7 . The linear compressor as claimed in  claim 6 , wherein sufficient clearance exists between the at least one lateral face of the piston or of the cylinder bearing the bearing coating and the surface of the piston or of the cylinder that faces said lateral face, to permit a movement of the piston in the longitudinal direction without mutual touching of the lateral faces.  
     
     
         8 . The linear compressor as claimed in  claim 6 , wherein the lateral face provided with the bearing coating is a shell of the piston.  
     
     
         9 . The linear compressor as claimed in  claim 6 , wherein the bearing coating includes a DLC layer.  
     
     
         10 . The linear compressor as claimed in  claim 6 , wherein a branch for hydraulic fluid for the bearing of the piston is formed at a high-pressure connection of the compressor.