Blower

Abstract

The invention is based on a blower having a rotatable gas delivery means ( 10 ). It is proposed that the gas delivery means ( 10 ) comprise a mass distribution that generates a predefined torque perpendicular to the axis of rotation ( 26 ) when the gas delivery means ( 10 ) rotates.

What is claimed is:  
     
         1 . A blower having a rotatable gas delivery means ( 10 ), 
 wherein the gas delivery means ( 10 ) comprises a mass distribution that generates a predefined torque perpendicular to the axis of rotation ( 26 ) when the gas delivery ( 10 ) means rotates.    
     
     
         2 . The blower according to  claim 1 , 
 wherein a mass allocation on the gas delivery means ( 10 ) projected onto a plane perpendicular to the axis of rotation ( 26 ) is balanced within the tolerance range of production-induced imbalance.    
     
     
         3 . The blower according to  claim 1  or  2 , 
 wherein the torque is effected by at least two balancing masses ( 20 ,  22 ) situated offset in the circumferential direction, one of which is located before and the other of which is located after the center of gravity ( 24 ) of the gas delivery means ( 10 ) in the axial direction.  
 
     
     
         4 . The blower according to  claim 3 , 
 wherein the balancing masses ( 20 ,  22 ) are located offset by 180° in relation to each other.    
     
     
         5 . The blower according to  claim 3  or  4 , 
 wherein the balancing masses ( 20 ,  22 ) are located on a central fixture of vanes ( 14 ) of the gas delivery means ( 10 ).  
 
     
     
         6 . The blower according to one of the claims  3  through  5 , 
 wherein the balancing masses ( 20 ,  22 ) are moveable.  
 
     
     
         7 . The blower according to one of the preceding claims, 
 wherein the mass distribution effecting the torque is integral with the gas delivery means ( 10 ).    
     
     
         8 . The blower according to  claim 7 , 
 wherein the gas delivery means ( 10 ) is an injection-molded part, and the mass distribution is integrally extruded on the gas delivery means ( 10 ).    
     
     
         9 . The blower according to one of the preceding claims, 
 wherein the gas delivery means ( 10 ) is a fan wheel.