Housing for a blade wheel

Abstract

The present invention relates to a housing for a blade wheel of a turbo machine including a flow channel which is enclosed by a housing wall; a valve flap for selectively sealing or releasing a flow opening in the housing wall; and a shaft which is connected with the valve flap. The shaft is guided through an opening in the housing wall to the outside of the flow channel. The opening has an opening width which is larger than the largest diameter of the smallest projected area of the valve flap and of the part of the shaft protruding into the flow channel in the mounted state, and the opening is sealed in the mounted state by a cover through which the shaft extends.

What is claimed is: 
     
         1 . A housing for a blade wheel of a turbo machine, comprising:
 a flow channel enclosed by a wall of the housing;   a valve flap configured for selectively sealing and releasing a flow opening in said housing wall;   a shaft connected with said valve flap, said shaft configured for being guided through an opening in said housing wall to an outside of said flow channel, said housing wall opening having an opening width which is larger than a largest diameter of a smallest projected area of said valve flap and of a part of said shaft protruding into said flow channel in a mounted state; and   a cover through which said shaft extends, said housing wall opening being sealed by said cover in said mounted state.   
     
     
         2 . The housing according to  claim 1 , wherein said cover is screwed together with said housing wall. 
     
     
         3 . The housing according to  claim 1 , said cover having a round configuration and including at least partly on a face side of said cover a thread configured to cooperate with a reciprocal thread in a region of said housing wall opening. 
     
     
         4 . The housing according to  claim 3 , said cover including said thread on said face side facing said flow channel and said cover further including a collar having at least one sealing surface on a side of said cover facing away from said flow channel. 
     
     
         5 . The housing according to  claim 4 , wherein a rotational axis of said cover and a rotational axis of said shaft are arranged to be spaced from one another in a region of said cover. 
     
     
         6 . The housing according to  claim 5 , said cover further including a bearing sleeve for said shaft. 
     
     
         7 . The housing according to  claim 6 , wherein said bearing sleeve is arranged to be pressed together with said cover. 
     
     
         8 . The housing according to  claim 1 , wherein said valve flap and said shaft are at least indirectly welded together. 
     
     
         9 . The housing according to  claim 8 , wherein said shaft includes a lever on a side facing away from said valve flap. 
     
     
         10 . The housing according to  claim 1 , wherein the blade wheel is arranged as at least one of an exhaust gas utilization turbine and a compressor wheel of an exhaust gas turbocharger.