Guide geometry for half-axial fan wheels

Abstract

A fan wheel ( 150 ) of a fan ( 130 ) comprises suction blades ( 210 ) having a leading edge ( 220 ) facing an axial inlet direction of the fan wheel, and exhaust blades ( 230 ) having an exhaust edge ( 240 ) facing a radial outlet direction of the fan wheel, as well as one deflecting element ( 270 ) connected positively or non-positively to at least one exhaust blade so as to deflect air from an active area of the suction blades ( 210 ) to an active area of the exhaust blades.

1 . A fan ( 130 ) having a fan wheel ( 150 ), which has
 suction blades ( 210 ) having a leading edge ( 220 ) facing an axial inlet direction of the fan wheel ( 150 ), and exhaust blades ( 230 ) having an exhaust edge ( 240 ) facing a radial outlet direction of the fan wheel ( 150 ),   and a deflecting element ( 270 ) for deflecting air from an active area of the suction blades ( 210 ) to an active area of the exhaust blades ( 230 ), characterized in that   the deflecting element ( 270 ) is connected to at least one exhaust blade ( 230 ).   
     
     
         2 . The fan ( 130 ) as claimed in  claim 1 , characterized in that at least one suction blade ( 210 ) is formed in one piece with an exhaust blade ( 230 ). 
     
     
         3 . The fan ( 130 ) as claimed in  claim 1 , characterized in that the deflecting element ( 270 ) is connected to the exhaust blade ( 230 ) by means of a coupling fit ( 280 ,  290 ). 
     
     
         4 . The fan ( 130 ) as claimed in  claim 3 , characterized in that the coupling fit ( 280 ,  290 ) has pegs ( 280 ) and apertures ( 290 ) corresponding to the pegs. 
     
     
         5 . The fan ( 130 ) as claimed in  claim 1 , characterized in that the suction blades ( 210 ) and the exhaust blades ( 230 ) form a one-piece element ( 340 ) of the fan wheel ( 150 ). 
     
     
         6 . The fan ( 130 ) as claimed in  claim 5 , characterized in that the one-piece element ( 340 ) is without an undercut with respect to a joint surface radially symmetric with the axis of rotation. 
     
     
         7 . The fan ( 130 ) as claimed in  claim 1 , characterized in that the fan comprises a fan motor ( 160 ) having a shaft ( 300 ) which supports the fan wheel ( 150 ), wherein a drive torque is transmitted from the fan motor ( 160 ) to the fan wheel ( 150 ) by means of the deflecting element ( 270 ). 
     
     
         8 . The fan ( 130 ) as claimed in  claim 7 , characterized in that the fan motor comprises an external rotor ( 320 ) connected nonpositively to the deflecting element ( 270 ). 
     
     
         9 . The fan ( 130 ) as claimed in  claim 8 , characterized in that the external rotor ( 320 ) comprises at least one permanent magnet ( 330 ). 
     
     
         10 . A motor vehicle ( 110 ) comprising a fan ( 130 ) as claimed in  claim 1 . 
     
     
         11 . The fan ( 130 ) as claimed in  claim 1 , characterized in that the deflecting element ( 270 ) is connected nonpositively to at least one exhaust blade ( 230 ). 
     
     
         12 . The fan ( 130 ) as claimed in  claim 11 , characterized in that the deflecting element ( 270 ) is connected to the exhaust blade ( 230 ) by means of a coupling fit ( 280 ,  290 ). 
     
     
         13 . The fan ( 130 ) as claimed in  claim 12 , characterized in that the coupling fit ( 280 ,  290 ) has pegs ( 280 ) and apertures ( 290 ) corresponding to the pegs. 
     
     
         14 . The fan ( 130 ) as claimed in  claim 11 , characterized in that the deflecting element ( 270 ) is also connected positively to at least one exhaust blade ( 230 ). 
     
     
         15 . The fan ( 130 ) as claimed in  claim 1 , characterized in that the deflecting element ( 270 ) is connected positively to at least one exhaust blade ( 230 ).