Compressor having a piston received on a gas bearing

Abstract

A compressor includes a working chamber in which a piston for compressing a gas can be displaced, a piston disposed in the working chamber, an inlet connection communicated with the working chamber, the inlet connection guiding a gas to the working chamber; an outlet connection communicated with the working chamber, the piston being displaceable within the working chamber to displace gas from working chamber via the outlet connection; a plurality of openings in a wall of the working chamber, the openings being communicated with the outlet connection for permitting gas flow from the outlet connection back to the working chamber, the openings being respectively covered and uncovered by the piston as the piston moves within the working chamber; and a particle filter arranged in a flow path of the gas between the inlet connection and the outlet connection.

1 - 10 . (canceled) 
   
   
       11 . A compressor comprising:
 a working chamber in which a piston for compressing a gas can be displaced, the working chamber having at least one wall;   a piston disposed in the working chamber;   an inlet connection communicated with the working chamber, the inlet connection guiding a gas to be compressed to the working chamber;   an outlet connection communicated with the working chamber, the piston being displaceable within the working chamber to effect displacement of a gas out the working chamber via the outlet connection;   a plurality of openings in the at least one wall of the working chamber, the openings being communicated with the outlet connection for permitting a flow of gas from the outlet connection back to the working chamber, the openings being respectively covered and uncovered by the piston as the piston performs a displacing movement within the working chamber; and   a particle filter arranged in a flow path of the gas between the inlet connection and the outlet connection.   
   
   
       12 . The compressor according to  claim 11  wherein the particle filter is disposed between the inlet connection and the working chamber. 
   
   
       13 . The compressor according to  claim 11  wherein the particle filter is disposed in a first pipe disposed between an egress of the working chamber and a branch pipe leading to the openings, said pipe being configured for connecting the egress of the working chamber to the outlet connection. 
   
   
       14 . The compressor according to  claim 11  wherein a branch pipe leading to the openings extends from a pressure pipe connecting an egress of the working chamber to the outlet connection wherein the particle filter is disposed in the branch pipe. 
   
   
       15 . The compressor according to  claim 14  wherein the branch pipe includes a distribution chamber and is formed with a hole connecting the distribution chamber to the pressure pipe and wherein the wall covered by the piston forms a partition between the working chamber and the distribution chamber. 
   
   
       16 . The compressor according to  claim 15  wherein the particle filter is disposed in the hole. 
   
   
       17 . The compressor according to  claim 15  wherein the particle filter is disposed in the distribution chamber in a covering relation with the partition. 
   
   
       18 . The compressor according to  claim 15  wherein the distribution chamber is formed as a hollow cylinder extending around the cylindrical working chamber. 
   
   
       19 . The compressor according to  claim 15  wherein the piston is driven by a linear motor. 
   
   
       20 . A refrigerator comprising a compressor including:
 a working chamber in which a piston for compressing a gas can be displaced, the working chamber having at least one wall;   a piston disposed in the working chamber;   an inlet connection communicated with the working chamber, the inlet connection guiding a gas to be compressed to the working chamber;   an outlet connection communicated with the working chamber, the piston being displaceable within the working chamber to effect displacement of a gas out the working chamber via the outlet connection;   a plurality of openings in the at least one wall of the working chamber, the openings being communicated with the outlet connection for permitting a flow of gas from the outlet connection back to the working chamber, the openings being respectively covered and uncovered by the piston as the piston performs a displacing movement within the working chamber; and   a particle filter arranged in a flow path of the gas between the inlet connection and the outlet connection.