Compressor arrangement

Abstract

The invention relates to a compressor arrangement for compressing a gas. The compressor arrangement comprises a drive unit with a driveshaft that can be driven in rotation and at least one compressor which comprises a compressor casing, at least one gas inlet opening formed in the compressor casing and at least one gas outlet opening formed in the compressor casing and fluidically connected to the at least one gas inlet opening. The compressor also has at least one impeller, which is arranged in the compressor casing, is connected in fixed rotation with the driveshaft and can be driven in rotation, for delivering the gas from the at least one gas inlet opening to the at least one gas outlet opening, and has at least one bearing device for bearing the at least one impeller, wherein the at least one bearing device is arranged on the compressor casing and on the at least one impeller.

1 . A compressor arrangement for compressing a gas, comprising
 a) a drive having a rotationally drivable driveshaft, and   b) at least one compressor, which has
 i) a compressor housing, 
 ii) at least one gas inlet opening formed in the compressor housing, 
 iii) at least one gas outlet opening formed in the compressor housing, said gas outlet opening being in flow connection with the at least one gas inlet opening, 
 iv) at least one rotationally drivable impeller, arranged in the compressor housing and connected to the driveshaft for conjoint rotation, for delivering the gas from the at least one gas inlet opening to the at least one gas outlet opening, and 
 v) at least one bearing apparatus for supporting the at least one impeller, wherein the at least one bearing apparatus
 is arranged on the compressor housing, and 
 is arranged on the at least one impeller. 
 
   
     
     
         2 . The compressor arrangement as claimed in  claim 1 , characterized in that the at least one bearing apparatus is embodied as a rolling bearing apparatus. 
     
     
         3 . The compressor arrangement as claimed in  claim 1 , characterized in that the at least one bearing apparatus comprises a first bearing body arranged on the compressor housing and a second bearing body, which is arranged on the at least one impeller. 
     
     
         4 . The compressor arrangement as claimed in  claim 1 , characterized in that the at least one bearing apparatus is arranged in a manner radially spaced apart from the driveshaft. 
     
     
         5 . The compressor arrangement as claimed in  claim 1 , characterized in that the at least one bearing apparatus has an internal dimension (DI) which is much greater than an external dimension (DA) of an adjacent portion of the driveshaft. 
     
     
         6 . The compressor arrangement as claimed in  claim 1 , characterized in that the compressor housing has at least one inwardly facing compressor-housing bearing surface for at least regionally arranging on the at least one bearing apparatus. 
     
     
         7 . The compressor arrangement as claimed in  claim 1 , characterized in that the at least one impeller has at least one outwardly facing impeller bearing surface for at least regionally arranging on the at least one bearing apparatus. 
     
     
         8 . The compressor arrangement as claimed in  claim 1 , characterized in that the at least one bearing apparatus comprises two bearing devices, wherein at least one impeller extends radially between the two bearing devices. 
     
     
         9 . The compressor arrangement as claimed in  claim 1 , characterized by at least one coupling device, which is connected to the driveshaft and at least one impeller for conjoint rotation. 
     
     
         10 . The compressor arrangement as claimed in  claim 9 , characterized in that the at least one bearing apparatus extends at least partially around the at least one coupling device. 
     
     
         11 . The compressor arrangement as claimed in  claim 1 , characterized in that the at least one coupling device has a first coupling part that is connected to the driveshaft for conjoint rotation and a second coupling part that is connected to the first coupling part for conjoint rotation, wherein the first coupling part and/or the second coupling part is connected to the at least one impeller for conjoint rotation, wherein preferably the first coupling part and the second coupling part are connected together in a form-fitting manner in the assembled state. 
     
     
         12 . The compressor arrangement as claimed in  claim 1 , characterized in that the at least one coupling device and the at least one impeller are connected together for conjoint rotation by means of magnetic force, wherein preferably the at least one coupling device comprises at least one first magnet and at least one impeller comprises at least one second magnet, which is connected to the at least one first magnet for conjoint rotation. 
     
     
         13 . The compressor arrangement as claimed in  claim 1 , characterized by at least one seal arrangement which bears against the compressor housing and the at least one impeller in a sealing manner. 
     
     
         14 . The compressor arrangement as claimed in  claim 1 , characterized by at least two impellers, wherein each impeller
 a) is connected to the driveshaft for conjoint rotation, and   b) is mounted in a rotationally drivable manner via at least one bearing apparatus, which
 i) is arranged on the compressor housing, and 
 ii) is arranged on the at least one impeller.