Fan comprising nano-bearing

Abstract

A fan including: a fan frame, a casing, fan blades, a magnetic piece, silicon steel sheets, a coil, a circuit board, a nano-bearing, and a rotational shaft of a motor. The fan frame is disposed at a bottom of the fan. The casing is disposed above the fan frame. The fan blades encircle the casing and are staggered with respect to one another. The magnetic piece is in a ring shape and is attached to an inner wall of the casing. The silicon steel sheets are stacked together, and disposed in a circle inside the magnetic piece. The coil is wound on the silicon steel sheets. The nano-bearing is disposed in a center of the silicon steel sheets. The rotational shaft of the motor is disposed inside the nano-bearing. The circuit board is connected to the coil wound on the silicon steel sheets.

The invention claimed is: 
     
         1 . A fan, comprising:
 a) a fan frame;   b) a casing;   c) fan blades;   d) a magnetic piece;   e) silicon steel sheets;   f) a coil;   g) a circuit board;   h) a nano-bearing; and   i) a rotational shaft driven by a motor;   
       wherein
   the fan frame is disposed at a bottom of the fan;   the casing is disposed above the fan frame;   a plurality of the fan blades encircles the casing and the fan blades are staggered with respect to one another;   the magnetic piece is in a ring shape and is attached to an inner wall of the casing;   a plurality of the silicon steel sheets is stacked together, and disposed in a circle inside the magnetic piece;   the coil is wound on the silicon steel sheets;   the nano-bearing is disposed in a center of the silicon steel sheets;   the rotational shaft of the motor is disposed inside the nano-bearing; and   the circuit board is connected to the coil wound on the silicon steel sheets.   
 
     
     
         2 . The fan of  claim 1 , wherein the nano-bearing comprises an outer ring and an inner ring;
 the inner ring comprises: an upper ring-shaped structure, a lower ring-shaped structure, and an accommodating chamber;   the upper ring-shaped structure and the lower ring-shaped structure are discontinuously arranged;   the accommodating chamber is disposed in a middle part of the inner ring between the upper ring-shaped structure and the lower ring-shaped structure;   an oil storing cotton is disposed inside the accommodating chamber; and   the outer ring and the inner ring are made of nano-materials.   
     
     
         3 . The fan of  claim 1 , wherein the nano-bearing is made of a nano-ceramic material, a nano-silicon carbide material, a nano-zirconia material, or a nano-silicon nitride. 
     
     
         4 . The fan of  claim 2 , wherein the nano-bearing is made of a nano-ceramic material, a nano-silicon carbide material, a nano-zirconia material, or a nano-silicon nitride. 
     
     
         5 . The fan of  claim 1 , wherein nano-wear resistant layers are attached to an inner wall of the outer ring and/or an outer wall of the inner ring. 
     
     
         6 . The fan of  claim 2 , wherein nano-wear resistant layers are attached to an inner wall of the outer ring and/or an outer wall of the inner ring. 
     
     
         7 . The fan of  claim 5 , wherein the nano-wear resistant layers are nano-ceramic coating layers. 
     
     
         8 . The fan of  claim 6 , wherein the nano-wear resistant layers are nano-ceramic coating layers. 
     
     
         9 . The fan of  claim 1 , wherein one end of the rotational shaft of the motor is provided with a fixing clasp. 
     
     
         10 . The fan of  claim 2 , wherein one end of the rotational shaft of the motor is provided with a fixing clasp. 
     
     
         11 . The fan of  claim 1 , wherein an oil leak-proof ring is disposed above the nano-bearing; and a sealant is disposed in the oil leak-proof ring. 
     
     
         12 . The fan of  claim 2 , wherein an oil leak-proof ring is disposed above the nano-bearing; and a sealant is disposed in the oil leak-proof ring. 
     
     
         13 . The fan of  claim 1 , wherein an oil leak-proof lid is disposed at an opening of the outer ring at a lower part of the nano-bearing. 
     
     
         14 . The fan of  claim 2 , wherein an oil leak-proof lid is disposed at an opening of the outer ring at a lower part of the nano-bearing.