Rotor disk

Abstract

An impeller ( 1 ), in particular a radial-flow fan or compressor impeller is proposed for an internal combustion engine. This impeller has an unequal number of full blades and split blades ( 4, 5 ) arranged at a different angular distance and in a different order. This further reduces the noise produced.

1 . Impeller for a radial-flow fan or compressor impeller, comprising full blades and split blades different in number from the full blade, wherein the full blades and the split blades are arranged at a different angular distance and in a different order.  
     
     
         2 . Impeller as claimed in  claim 1 , further comprising a coupling and a bearing integrated on a rear side of the impeller.  
     
     
         3 . Impeller as claimed in  claim 2 , wherein the impeller is made of a material selected to minimize mass moment of inertia.  
     
     
         4 . Impeller as claimed in  claim 3 , wherein balancing holes are arranged on the impeller to compensate for an imbalance in the fan wheel.  
     
     
         5 . Impeller as claimed in  claim 4 , wherein the balancing holes are arranged on at least one of a cover plate and a base plate.  
     
     
         6 . Impeller as claimed in  claim 1 , wherein the impeller is made of a material selected to minimize mass moment of inertia.  
     
     
         7 . Impeller as claimed in  claim 1 , wherein balancing holes are arranged on the impeller to compensate for an imbalance in the fan wheel.  
     
     
         8 . Impeller as claimed in  claim 7 , wherein the balancing holes are arranged on at least one of a cover plate and a base plate.