Magnetized fan and method of fabricating the same

Abstract

A magnetized fan and a method of fabricating the same are disclosed. The fan has a hub and a plurality of blades radially extending from a periphery of the hub. The fan is fabricated from magnetic material. Thereby, sectors are formed multiple N and S poles. To fabricate the fan, the N and S poles are arranged in accordance with the requirement of the sectors, and the magnetic material is injected to the fan according to the arrangement of the N and S poles. The magnetic material is then magnetized to generate magnetic force.

1 . A method of fabricating a magnetized fan, comprising: 
 a) performing arrangement of N and S poles according required magnetic sectors of the fan;    b) injecting a magnetic material into the fan according to the arrangement of the N and S poles; and    c) magnetizing the magnetic sectors of the fan to generate a magnetic force.    
   
   
       2 . The method as claimed in  claim 1 , wherein the magnetic sectors include axial-, radial-, radiation- or two-directional, or multi-polar sectors.  
   
   
       3 . The method as claimed in  claim 1  wherein the arrangement of the N and S poles includes isotropic, anisotropic or multi-polar arrangement.  
   
   
       4 . The method as claimed in  claim 1 , wherein the magnetic material includes ferrite magnetic material, SmCo magnetic material, NdFeB magnetic material or FeCoNi magnetic material.  
   
   
       5 . The method as claimed in  claim 1 , wherein the magnetic material is powdered and processed to form magnetic glue particles.  
   
   
       6 . The method as claimed in  claim 5 , further includes mixing the magnetic material, resin and plastic material to form particles.  
   
   
       7 . The method as claimed in  claim 1 , wherein step (b) includes injecting the magnetic material by injection, baking, sintering or powder metallurgy.  
   
   
       8 . The method as claimed in  claim 1 , further comprising performing magnetic field analysis to design a mold, fusing the magnetic material, and injecting the fused magnetic material into the mold before step (b).  
   
   
       9 . The method as claimed in  claim 1 , wherein the magnetization step in step (c) includes conducting electricity of the magnetic material.  
   
   
       10 . The method as claimed in  claim 1 , further comprising a step of using a magnetization seat.  
   
   
       11 . The method as claimed in  claim 10 , wherein step (b) comprises placing the fan in the magnetization seat, and applying a voltage to the magnetization seat to generate a magnetic field, so as to magnetize the fan.  
   
   
       12 . The method as claimed in  claim 10 , wherein the magnetization seat includes a single-side magnetization structure, a complex magnetization structure, outer circumference multi-pole magnetization structure, or an inner circumference multi-pole magnetization.  
   
   
       13 . A magnetized fan, including a hub and a plurality of blades radially extending from a periphery of the hub, wherein the magnetic fan includes a built-in magnetic material to form a plurality of magnetic sectors constructed by a plurality of N and S poles.  
   
   
       14 . The fan as claimed in  claim 12 , wherein the blades include axial-flow blades, centrifugal-flow blades, inclined-flow blades or transverse-flow blades.  
   
   
       15 . The fan as claimed in  claim 12 , wherein the magnetic sectors are distributed in the hub, the periphery of the hub, the blades or terminuses of the blades.  
   
   
       16 . The fan as claimed in  claim 13 , wherein the magnetic material is built in all of the fan, or a portion of the fan.  
   
   
       17 . The fan as claimed in  claim 13 , wherein the magnetic material includes ferrite magnetic material, SmCo magnetic material, NdFeB magnetic material or FeCoNi magnetic material.