Fan Unit, Particularly for a Vacuum Cleaner

Abstract

A vacuum cleaner fan with an electric drive motor having a stator assembly and a rotor. The stator assembly and rotor are disposed in a bearing pot. An at least single-stage fan unit is driven by the electric motor. The fan unit includes a guide stage, a suction cap, and an impeller that is configured to generate an air stream. The bearing pot includes a receiving pocket which holds an adapter housing. The adapter housing accommodates a printed circuit board. A power semiconductor operable to control rotational speed of the fan unit is included on the printed circuit board. At least a portion of the power semiconductor protrudes from the adapter housing into the vicinity of the air stream generated by the fan unit.

1 - 5 . (canceled) 
   
   
       6 . A vacuum cleaner fan comprising:
 an electric drive motor having a stator assembly and a rotor;   a bearing pot configured, to receive the stator assembly and the rotor;   an at least single-stage fan unit configured to be driven by the electric drive motor and having a guide stage, an impeller, and a suction cap, the impeller configured to generate an air stream;   a receiving pocket provided on the bearing pot;   an adapter housing configured to receive a printed circuit board, the adapter housing being received in the receiving pocket; and   a power semiconductor operable to control rotation speed of the at least single-stage fan unit, the power semiconductor being disposed on the printed circuit board,   wherein at least a portion of the power semiconductor protrudes from the adapter housing in a region of the air stream.   
   
   
       7 . The vacuum cleaner fan recited in  claim 6 , wherein the electric drive motor comprises brush holders with carbon brushes, the bearing pot configured to receive the brush holders with the carbon brushes. 
   
   
       8 . The vacuum cleaner fan recited in  claim 6 , wherein the adapter housing includes a lower part and a cover having an opening, and
 wherein the portion of the power semiconductor protrudes through the opening.   
   
   
       9 . The vacuum cleaner fan recited in  claim 6 , wherein the portion of the power semiconductor includes a metallic flange. 
   
   
       10 . The vacuum cleaner fan recited in  claim 8 , wherein: the portion of the power semiconductor includes a metallic flange. 
   
   
       11 . The vacuum cleaner fan recited in  claim 8 , wherein the cover is snap-fittable on the lower part. 
   
   
       12 . The vacuum cleaner fan recited in  claim 10 , wherein the cover is snap-fittable on the lower part. 
   
   
       13 . The vacuum cleaner fan as recited in  claim 6 , wherein the portion of the power semiconductor is disposed in a vicinity of an air supply opening of the guide stage. 
   
   
       14 . The vacuum cleaner fan as recited in  claim 8 , wherein the portion of the power semiconductor is disposed in a vicinity of an air supply opening of the guide stage. 
   
   
       15 . The vacuum cleaner fan as recited in  claim 9 , wherein the portion of the power semiconductor is disposed in a vicinity of an air supply opening of the guide stage. 
   
   
       16 . The vacuum cleaner fan as recited in  claim 11 , wherein the portion of the power semiconductor is disposed in a vicinity of an air supply opening of the guide stage. 
   
   
       17 . The vacuum cleaner fan as recited in  claim 12 , wherein the portion of the power semiconductor is disposed in a vicinity of an air supply opening of the guide stage.