Electrical fan with thermoelectric module

Abstract

An electrical fan includes a fan unit comprising a base from which a stand extends to support a motor-driven blade assembly, whereby an air current is induced to move from a back side of the blade assembly toward a front side by the rotation of the blade assembly. A thermally conductive plate is arranged on the back side of the blade assembly and defines a plurality of air passages through which the air current passes. A thermoelectric module is mounted to the thermal conductive plate used to control the temperature of the thermally conductive plate, which in turn controls the temperature of the air current passing through the air passages of the thermally conductive plate.

1 . An electrical fan comprising: 
 a fan unit comprising a blade assembly that is operable to induce an air current that moves from a back side of the blade assembly to a front side of the blade assembly;    a thermally conductive member mounted to the fan unit; and    a temperature control unit mounted to the thermally conductive member to control temperature of the thermally conductive member, which in turn controls temperature of the air current from back side of the blade assembly to the front side of the blade assembly when the air current flows through the thermally conductive member.    
   
   
       2 . The electrical fan as claimed in  claim 1 , wherein the fan unit comprises a base from which a stand extends to support the blade assembly.  
   
   
       3 . The electrical fan as claimed in  claim 2 , wherein the fan unit comprises a motor based driving device to drive rotation of the blade assembly.  
   
   
       4 . The electrical fan as claimed in  claim 1 , wherein the fan unit comprises a grating covering the blade assembly.  
   
   
       5 . The electrical fan as claimed in  claim 1 , wherein the temperature control unit comprises at least one thermoelectric module having a hot end and a cold end.  
   
   
       6 . The electrical fan as claimed in  claim 5 , wherein the hot end of the thermoelectric module is mounted onto the thermally conductive member.  
   
   
       7 . The electrical fan as claimed in  claim 5 , wherein the cold end of the thermoelectric module is mounted onto the thermally conductive member.  
   
   
       8 . The electrical fan as claimed in  claim 1 , wherein the temperature control unit comprises a plurality of thermoelectric modules arranged on the thermally conductive member in an equally spaced manner.  
   
   
       9 . The electrical fan as claimed in  claim 1 , wherein the fan unit comprises a driving unit arranged on the back side of the blade assembly to drive rotation of the blade assembly and wherein the temperature control unit comprises a plurality of thermoelectric modules arranged around the driving device.  
   
   
       10 . The electrical fan as claimed in  claim 9 , wherein the thermoelectric modules are arranged in an equally spaced manner around the driving device.  
   
   
       11 . The electrical fan as claimed in  claim 1 , wherein the fan unit comprises a driving unit arranged on the back side of the blade assembly to drive rotation of the blade assembly and wherein the temperature control unit comprises a thermoelectric module of annular configuration surrounding the driving device.  
   
   
       12 . The electrical fan as claimed in  claim 1 , wherein the temperature control unit further comprises a heat guiding tube to remove heat from the thermoelectric module.  
   
   
       13 . The electrical fan as claimed in  claim 1 , wherein the thermally conductive member comprises a thermally conductive plate defining a plurality of air passages through which the air current passes.  
   
   
       14 . The electrical fan as claimed in  claim 1 , wherein the thermally conductive member is mounted on the back side of the blade assembly.