Lateral channel compressor

Abstract

A lateral channel compressor with an impeller ( 12 ) which is arranged in a casing and which is supported so that it is rotatable around an axial rotational axis ( 4 ); the impeller having a plurality of impeller blades ( 20 ) which are arranged in a working area ( 2 ) which is formed by the casing, wherein the working area ( 2 ) has an undercut and the casing comprises a basic casing element ( 6 ), a cover ( 8 ) and an insert ( 10 ) in order to form the undercut.

1 . Lateral channel compressor with an impeller ( 12 ) which is arranged in a casing and which is supported so that it is rotatable around an axial rotational axis ( 4 ), said impeller comprising a plurality of impeller blades ( 20 ) which are arranged in a working area ( 2 ) which is formed by the casing, wherein the working area ( 2 ) comprises an undercut and the casing comprises a basic casing element ( 6 ), a cover ( 8 ) and an insert ( 10 ) in order to form the undercut.  
   
   
       2 . Lateral channel compressor according to  claim 1 , in which at least the basic casing element ( 6 ) and the cover ( 8 ) are diecast parts.  
   
   
       3 . Lateral channel compressor according to either one of claims  1  or  2 , in which the insert ( 10 ) is formed as an insert ring which circulates at least to a large extent.  
   
   
       4 . Lateral channel compressor according to  claim 3 , in which the insert ring takes the form of a circlip.  
   
   
       5 . Lateral channel compressor according to any one of the above claims, in which the insert ( 10 ) is attached on the basic casing element ( 6 ) and/or on the cover ( 8 ).  
   
   
       6 . Lateral channel compressor according to any one of the above claims, in which the insert ( 10 ) is clamped using a spring element ( 36 ).  
   
   
       7 . Lateral channel compressor according to  claim 6 , in which the spring element ( 36 ) is at the same time formed as a circulating sealing element.  
   
   
       8 . Lateral channel compressor according to any one of the above claims, in which the basic casing element ( 6 ) and the cover ( 8 ) are separated along a separation level ( 32 ) which is oriented vertically to the axial rotational axis ( 4 ), and the insert ( 10 ) is arranged only on one side of the separation level ( 32 ).  
   
   
       9 . Lateral channel compressor according to  claim 8 , in which a boundary side ( 10 C) of the insert ( 10 ) lies in the separation level ( 32 ).  
   
   
       10 . Lateral channel compressor according to any one of the above claims, in which the insert ( 10 ) comprises, when seen in cross-section, a rear side ( 10 A) and on the working area side a rib ( 10 B) which extends in the radial direction, with two side flanks, each of which form a partial wall section of the working area ( 2 ).  
   
   
       11 . Lateral channel compressor according to  claim 10 , in which the flanks of the rib ( 10 B) align in each case with an adjacent partial wall section of the working area ( 2 ) which is formed from the basic casing element ( 6 ) and/or the cover ( 8 ).  
   
   
       12 . Lateral channel compressor according to any one of the above claims, in which the working area ( 2 ) is formed as a dual-flow compartment lateral channel with two flow compartments ( 2 A,  2 B), and the flow compartments ( 2 A,  2 B) comprise an elliptical cross-section geometry, which is in particular formed almost completely by the casing,and by a supporting ring ( 18 ) of the impeller ( 12 ).