Airflow generator

Abstract

The present invention provides an airflow generator, including a plate, a magnetic brake and a housing. The plate has a pivot point and a swinging end. Two magnetic poles are assembled at predefined locations on the plate nearby the pivot point. The magnetic coil is located opposite to magnetic poles of the plate, then a controller is used to control the magnetization state of the magnetic coil, thus yielding suction and repulsion with magnetic pole and driving the swinging end of the plate. The volume of the generator of the present invention is minimized, but an efficient heat-radiating effect is achieved to resolve the bottleneck of a typical radiator fan, making it applicable to the heat-radiating structure of various small-sized electronic devices.

1 . An airflow generator, comprising:
 an oblong-shaped plate with predefined thickness, the plate having a pivot point and a swinging end away from the pivot point;   two magnetic poles assembled at predefined locations nearby said pivot point of the plate; and   a magnetic brake, being comprised of a magnetic coil and a controller, said magnetic coil being located opposite to said two magnetic poles of the plate, said magnetic coil having a magnetization state controlled by said controller yielding attraction and repulsion with said two magnetic poles of the plate, driving said swinging end of the plate.   
   
   
       2 . The generator defined in  claim 1 , wherein said pivot point is located between said swinging end and said two magnetic poles. 
   
   
       3 . The generator defined in  claim 1 , wherein said two magnetic poles are located between said swinging end and said pivot point. 
   
   
       4 . The generator defined in  claim 1 , wherein said two magnetic poles are comprised of N and S magnetic poles located at two sides of the plate, said magnetic coil of said magnetic brake comprising a first magnetic coil and second magnetic coil, located opposite to said N and S magnetic poles. 
   
   
       5 . The generator defined in  claim 1 , wherein said two magnetic poles and said magnetic coil have modular structure, the plate having an assembly portion located at one side of the plate closer to said pivot point and linked to a magnetic pole. 
   
   
       6 . The generator defined in  claim 1 , wherein said swinging end of the plate is more flexible than said pivot point. 
   
   
       7 . The generator defined in  claim 1 , wherein said swinging end of the plate is wider than said pivot point. 
   
   
       8 . The generator defined in  claim 2 , wherein the plate has a section from said swinging end to said pivot point being longer than a section from the magnetic poles to said pivot point. 
   
   
       9 . An airflow generator, comprising:
 plate with predefined thickness, being comprised of a pivot point and a swinging end away from said pivot point;   two magnetic poles assembled at predefined locations nearby pivot point of said plate;   a magnetic brake, being comprised of a magnetic coil and a controller, said magnetic coil being located opposite to said two magnetic poles of said plate, said magnetic coil having a magnetization state controlled by said controller, yielding attraction and repulsion with magnetic poles of said plate, driving said swinging end of said plate; and   a housing, having a space to accommodate said plate, said housing having an air inlet and an air outlet, said air outlet being located opposite to said swinging end of said plate.   
   
   
       10 . The generator defined in  claim 9 , wherein said pivot point is located between said swinging end and said two magnetic poles. 
   
   
       11 . The generator defined in  claim 9 , wherein said two magnetic poles are located between said swinging end and said pivot point. 
   
   
       12 . The generator defined in  claim 9 , wherein said two magnetic poles are comprised of N and S magnetic poles located at two sides of the plate, said magnetic coil of said magnetic brake comprising a first magnetic coil and second magnetic coil, located opposite to said N and S magnetic poles. 
   
   
       13 . The generator defined in  claim 9 , wherein said two magnetic poles and said magnetic coil have modular structure, the plate having an assembly portion located at one side of the plate closer to said pivot point and linked to a magnetic pole. 
   
   
       14 . The generator defined in  claim 9 , wherein said swinging end of the plate is more flexible than said pivot point. 
   
   
       15 . The generator defined in  claim 9 , wherein said swinging end of the plate is wider than said pivot point. 
   
   
       16 . The generator defined in  claim 10 , wherein the plate has a section from said swinging end to said pivot point being longer than a section from the magnetic poles to said pivot point. 
   
   
       17 . The generator defined in  claim 9 , wherein said air outlet of said housing has an expanded structure.