Compressor for a Refrigeration Device

Abstract

A compressor for a refrigeration device comprising a compartment, a piston which can be displaced inside the compartment, and valves which are arranged between the compartment and a suction connection or a pressure connection. The movable parts of the valves are provided with a coating that is harder than the movable parts.

1 - 9 . (canceled) 
   
   
       10 . A compressor for a refrigeration device comprising:
 a chamber;   a piston which can move in the chamber; and   valves arranged between the chamber and a suction connection or a pressure connection, wherein a hard coating is applied to movable parts of the valves, the hard coating being harder than said movable parts.   
   
   
       11 . The compressor according to  claim 10 , wherein the hard coating is a ceramic coating. 
   
   
       12 . The compressor according to  claim 11 , wherein the ceramic coating is formed by applying material to the movable parts. 
   
   
       13 . The compressor according to  claim 11 , wherein the ceramic coating is formed by surface conversion of the material of the movable parts. 
   
   
       14 . The compressor according to  claim 11 , wherein the ceramic coating is an oxide, a nitride, a carbide or a mixture thereof. 
   
   
       15 . The compressor according to  claim 10 , wherein the material of the movable parts is a spring steel. 
   
   
       16 . The compressor according to  claim 10 , wherein the compressor comprises a linear drive unit acting directly on the piston. 
   
   
       17 . The compressor according to  claim 10 , wherein the piston is mounted in an oil-free manner in the chamber. 
   
   
       18 . The compressor according to  claim 17 , wherein the piston is mounted by means of compressed fluid branched off from the pressure connection.