Cooling fan with fluid control device

Abstract

A cooling fan with fluid control device comprises a fan blade assembly and a frame member. The frame member provides a hub seat movably attached with the fan blade assembly and formed with a plurality of fluid control elements at the inner side thereof to control radial pressure of fluid. The frame member at least has a fluid guide part connected to the fluid control elements with a first through hole and a second through hole being in the fluid guide part and the first through hole being greater than the second through hole. When the fan blade assembly rotates to move the fluid, the fluid can flow toward the center of the frame member by way of the fluid control elements and the fluid guide part to increase the amount of the fluid at the rear side of the hub seat.

1 . A cooling fan with fluid control device, comprising: 
 a fan blade assembly;    a frame member, providing a hub seat being movably attached with the fan blade assembly, being formed with a plurality of fluid control elements at the inner side thereof to control radial pressure of fluid, having at least a fluid guide part being connected to the fluid control elements with a first through hole and a second through hole being in the fluid guide part and the first through hole being greater than the second through hole;    whereby, the fluid can be controlled to increase the amount thereof at the rear side of the hub seat.    
   
   
       2 . The cooling fan with fluid control device as defined in  claim 1 , wherein the hub seat is provided with at least a joining part to connect with fluid guide part.  
   
   
       3 . The cooling fan with fluid control device as defined in  claim 2 , wherein the joining part is shaped being similar to the fluid control elements.  
   
   
       4 . The cooling fan with fluid control device as defined in  claim 1 , wherein the fluid control elements are guide blades.  
   
   
       5 . The cooling fan with fluid control device as defined in  claim 1 , wherein the hub seat is divergent from the upper section to the lower section thereof.  
   
   
       6 . The cooling fan with fluid control device as defined in  claim 1 , wherein the hub seat is convergent from the upper section to the lower section.