Piston compressor for compressing gaseous media in at least two working chambers

Abstract

The invention relates to a piston compressor ( 15 ) which is used to compress gaseous media and which contains a differential piston ( 1 ) provided with a first piston part ( 16 ) and a second piston part ( 17 ) which are arranged on an axis. Two cylinders ( 7, 8 ) having internal holes with different diameters form two working chambers ( 21, 22 ). The cylinders are closed by plates ( 2, 9 ) comprising valve arrangements. The piston part ( 17 ) with the smaller diameter is guided through an opening ( 20 ) in the plate ( 2 ). The valves are more particularly lamella valves, reed valves or values with a spring return position.

1 . A piston compressor for compression of gaseous media in at least two working chambers, said compressor having a stepped piston containing a first piston part and at least one coaxially arranged second piston part, a first cylinder for holding the first piston part and for forming a first working chamber, and at least one second cylinder for holding the second piston part and for forming a second working chamber, with the second piston part having a smaller diameter than the first piston part, with each of the at least two cylinders being closed by means of a plate with valve arrangements, and with the second piston part being passed through an opening in one of the plates, with the second piston part being arranged at one end of the first piston part with the second piston part forming the front end of the stepped piston, and with the second piston part forming a cylindrical working chamber, and the first piston part forming an annular working chamber.  
     
     
         2 . The piston compressor as claimed in  claim 1 , wherein the plates are in the form of disks and bound the working chambers at the end.  
     
     
         3 . The piston compressor as claimed in  claim 1 , wherein the plates are provided with inlet valves and outlet valves.  
     
     
         4 . The piston compressor as claimed in  claim 3 , wherein the valves are lamellar valves.  
     
     
         5 . The piston compressor as claimed in  claim 3 , wherein the valves are tongue valves.  
     
     
         6 . The piston compressor as claimed in  claim 3 , wherein the valves are individual valves with spring resetting.