Fan hub with a rocket shaped end

Abstract

The present invention relates to a fan hub with a rocket shaped end. The fan hub comprises a hub body with a depressed ditch rounding at a proper position and a guiding section extended from the depressed ditch, and a plurality of fan blades on the outer surface of the hub body. The guiding section gradually narrows to an end and the tip at the end is in a curved shape. Accordingly, when the fan blades rotate, undesirable noise and working current can be reduced; and, simultaneously, the present invention can effectively guide the air flow, decrease the wastage of power, and improve the working efficiency of the fan.

1 . A fan hub with a rocket shaped end, comprising: 
 a hub body;    a depressed ditch around said hub body;    a guiding section extended from said depressed ditch; and    a plurality of fan blades on the outer surface of said hub body,    wherein said guiding section gradually narrows to an end and the top surface of said end is in a curved type.    
   
   
       2 . The fan hub according to  claim 1 , wherein the diameter of said hub body if greater than the diameter of said guiding section.  
   
   
       3 . The fan hub according to  claim 1 , wherein said guiding section is in a streamline shape.  
   
   
       4 . The fan hub according to  claim 1 , wherein said plurality of fan blades is in a shape of an aerofoil type.  
   
   
       5 . The fan hub according to  claim 1 , wherein said plurality of fan blades is in a shape of a curved type.  
   
   
       6 . The fan hub according to  claim 1 , wherein said plurality of fan blades is in a shape of a bevel type.  
   
   
       7 . The fan hub according to  claim 1 , wherein said plurality of fan blades is in a shape of a radial type.  
   
   
       8 . The fan hub according to  claim 1 , wherein the number of said plurality of fan blades is an odd.  
   
   
       9 . The fan hub according to  claim 1 , wherein the number of said plurality of fan blades is an even.  
   
   
       10 . A fan hub with a rocket shaped end, comprising: 
 a hub body;    a guiding section extended from said depressed ditch; and    a plurality of fan blades on the outer surface of said hub body,    wherein said guiding section gradually narrows to an end and the top surface of said end is in a curved type.    
   
   
       11 . The fan hub according to  claim 10 , wherein the diameter of said hub body if greater than the diameter of said guiding section.  
   
   
       12 . The fan hub according to  claim 10 , wherein said guiding section is in a streamline shape.  
   
   
       13 . The fan hub according to  claim 10 , wherein said plurality of fan blades is in a shape of an aerofoil type.  
   
   
       14 . The fan hub according to  claim 10 , wherein said plurality of fan blades is in a shape of a curved type.  
   
   
       15 . The fan hub according to  claim 10 , wherein said plurality of fan blades is in a shape of a bevel type.  
   
   
       16 . The fan hub according to  claim 10 , wherein said plurality of fan blades is in a shape of a radial type.  
   
   
       17 . The fan hub according to  claim 10 , wherein the number of said plurality of fan blades is an odd.  
   
   
       18 . The fan hub according to  claim 10 , wherein the number of said plurality of fan blades is an even.