Cooler Fan Hub

Abstract

The invention relates to an impeller wheel ( 1 ) as part of a fan for cooling a motor vehicle drive, in particular an internal combustion engine. The impeller wheel ( 1 ) can be set in rotation by a fan drive ( 10 ) having a drive shaft ( 8 ). The impeller wheel ( 1 ) has a cup-shaped basic form, including a base ( 3 ) for fastening the impeller wheel ( 1 ) on the drive shaft ( 8 ), a tubular section ( 4 ) which adjoins the base ( 3 ), and at least two impeller wheel blades ( 2 ) which are connected to the tubular section ( 4 ) and extend outward.

1 . A fan for cooling an internal combustion engine having an impeller wheel ( 1 ) coupled to a fan drive ( 10 ) having a drive shaft ( 8 ), comprising:
 a base ( 3 ) for fastening the impeller wheel ( 1 ) on the drive shaft ( 8 );   a tubular section ( 4 ) adjoining said base ( 3 );   at least two impeller wheel blades ( 2 ) connected to said tubular section ( 4 ) and extend outward; and at least one aperture ( 5 ) provided in said base ( 3 ).   
   
   
       2 . The fan of  claim 1  wherein said aperture ( 5 ) allows pressure equalization between an outer side ( 6 ) of the base ( 3 ) and an inner side ( 7 ) of said base ( 3 ) which faces the fan drive ( 10 ). 
   
   
       3 . The fan of  claim 1  wherein said impeller wheel ( 1 ) has a cup-shaped basic shape. 
   
   
       4 . The fan of  claim 1 , wherein said base ( 3 ) has at least one reinforcing rib ( 11 ). 
   
   
       5 . The fan of  claim 4 , wherein said at least one reinforcing rib ( 11 ) is arranged on said inner side ( 7 ) of said base ( 3 ). 
   
   
       6 . The fan of  claim 4 , wherein said at least one aperture ( 5 ) is spaced apart from said at least one reinforcing rib ( 11 ). 
   
   
       7 . The fan of  claim 1 , wherein a cover ( 9 ) is provided which is spaced apart from said outer side ( 6 ) of said base ( 3 ). 
   
   
       8 . The fan of  claim 7 , wherein a damping material ( 12 ) is provided between said outer side ( 6 ) of said base ( 3 ) and said cover ( 9 ). 
   
   
       9 . The fan of  claim 8 , wherein said damping material ( 12 ) is a foam ( 13 ). 
   
   
       10 . The fan of  claim 1  wherein at least one reinforcement element ( 14 ) is provided on said tubular section ( 4 ). 
   
   
       11 . The fan of  claim 10 , wherein said at least one reinforcement element ( 14 ) comprises a ring ( 15 ) which is arranged on an open side of said tubular section ( 4 ) which faces away from said base ( 3 ). 
   
   
       12 . The fan of  claim 11  wherein said at least one reinforcement element ( 14 ) is manufactured substantially from a lightweight material. 
   
   
       13 . An impeller wheel ( 1 ) coupled to a fan drive ( 10 ), comprising:
 a base ( 3 ) for fastening the impeller wheel ( 1 ) on the drive shaft ( 8 );   a tubular section ( 4 ) adjoining said base ( 3 );   at least two impeller wheel blades ( 2 ) connected to said tubular section ( 4 ) and extend outward; and at least one aperture ( 5 ) provided in said base ( 3 )   wherein said impeller wheel ( 1 ) has a cup-shaped basic shape.   
   
   
       14 . The impeller wheel of  claim 13 , wherein said base ( 3 ) has at least one reinforcing rib ( 11 ). 
   
   
       15 . The fan of  claim 14  wherein said at least one reinforcement element ( 14 ) is manufactured substantially from a lightweight material.