Vacuum cleaner with heat sink in air path

Abstract

A floor care appliance includes a nozzle assembly having a suction inlet, a canister assembly, a dirt collection vessel carried on the canister assembly, a suction generator carried on the canister assembly and a wand assembly connecting the nozzle assembly with the canister assembly. The wand assembly includes an inlet connected to the nozzle assembly, an outlet connected to the canister assembly and a conduit defining an air path between the inlet and the outlet. A heat sink carried on the wand assembly is provided in communication with the air path in the conduit. An electronic control is connected to the heat sink.

1 . A floor care appliance, comprising:
 a nozzle assembly including a suction inlet;   a canister assembly;   a dirt collection vessel carried on said canister assembly;   a suction generator carried on said canister assembly;   a wand assembly connecting said nozzle assembly with said canister assembly, said wand assembly including an inlet end connected to said nozzle assembly, an outlet end connected to said canister assembly and a conduit defining an air path between said inlet end and said outlet end;   a heat sink carried on said wand assembly in communication with said air path in said conduit; and   an electronic control connected to said heat sink.   
   
   
       2 . The floor care appliance of  claim 1 , wherein said wand assembly includes a handle section. 
   
   
       3 . The floor care appliance of  claim 2 , wherein said wand assembly includes a telescoping wand section. 
   
   
       4 . The floor care appliance of  claim 3 , wherein said wand assembly includes a hose section. 
   
   
       5 . The floor care appliance of  claim 2 , wherein said wand assembly includes a hose section. 
   
   
       6 . The floor care appliance of  claim 1 , wherein said conduit includes a wall having an opening and said heat sink is received in said opening. 
   
   
       7 . The floor care appliance of  claim 6 , wherein said heat sink is flush with an interior surface of said conduit. 
   
   
       8 . The floor care appliance of  claim 6 , wherein said heat sink projects from an interior surface of said conduit into said air path. 
   
   
       9 . The floor care appliance of  claim 1 , wherein said heat sink is mounted to said wand assembly by a fastener. 
   
   
       10 . The floor care appliance of  claim 1 , wherein, said heat sink is friction fit to said wand assembly. 
   
   
       11 . The floor care appliance of  claim 1 , wherein said heat sink is adhered to said wand assembly. 
   
   
       12 . The floor care appliance of  claim 1 , wherein said heat sink includes an arcuate base. 
   
   
       13 . The floor care appliance of  claim 6 , wherein said heat sink includes an arcuate wall having a first radius of curvature substantially equal to a second radius of curvature characteristic of said wall of said conduit. 
   
   
       14 . The floor care appliance of  claim 1 , wherein said nozzle assembly includes a rotary agitator. 
   
   
       15 . The floor care appliance of  claim 1 , wherein said electronic control includes a circuit board. 
   
   
       16 . The floor care appliance of  claim 1 , wherein said electronic control includes a triac. 
   
   
       17 . The floor care appliance of  claim 1 , wherein said electronic control includes a circuit board and a triac. 
   
   
       18 . A method of cooling an electronic control on a vacuum cleaner including a wand assembly having a conduit defining an air path, said method comprising:
 connecting said electronic control to a heat sink; and   securing said heat sink to said conduit of said wand so that said heat sink is in communication with said air path.