Electric blower

Abstract

Disclosed herein is an electric blower including: an impeller; a driving module including a rotor part coupled to the impeller in order to driving the impeller and a stator part, the rotator part including a magnet and the stator part including an armature formed of a core positioned so as to face the magnet and a coil; a motor housing having the driving module mounted thereon; and a control module mounted on the motor housing and controlling the driving module.

What is claimed is: 
     
         1 . An electric blower, comprising:
 an impeller;   a driving module including a rotor part coupled to the impeller in order to driving the impeller and a stator part, the rotator part including a magnet and the stator part including an armature formed of a core positioned so as to face the magnet and a coil;   a motor housing having the driving module mounted thereon; and   a control module mounted on the motor housing and controlling the driving module.   
     
     
         2 . The electric blower as set forth in  claim 1 , wherein the driving module has an air bearing part formed between the stator part and the rotor part. 
     
     
         3 . The electric blower as set forth in  claim 1 , further comprising an impeller cover covering the impeller and coupled to the motor housing. 
     
     
         4 . The electric blower as set forth in  claim 1 , wherein the control module includes:
 a control substrate coupled to the motor housing; and   a hall sensor connected to the control substrate and positioned so as to face the rotor part of the driving module.   
     
     
         5 . The electric blower as set forth in  claim 1 , wherein the rotor part of the driving module includes:
 a sleeve rotatably supported by a shaft; and   a magnet coupled to the sleeve so as to face the armature of the stator part.   
     
     
         6 . The electric blower as set forth in  claim 5 , wherein the sleeve and the shaft include magnets for magnetic bearing mounted on each of facing surfaces of each other. 
     
     
         7 . The electric blower as set forth in  claim 6 , wherein the magnets for magnetic bearing are mounted at an upper end portion of the sleeve. 
     
     
         8 . The electric blower as set forth in  claim 7 , wherein the magnets for magnetic bearing are formed in an annular ring shape. 
     
     
         9 . The electric blower as set forth in  claim 1 , wherein the stator part of the driving module includes:
 a shaft rotatably supporting the rotator part; and   an armature facing the magnet of the rotator part and including a core and a coil.   
     
     
         10 . The electric blower as set forth in  claim 9 , wherein the shaft is inserted into the sleeve so as to form an air bearing part, having a fine interval therebetween and an outer peripheral surface of the shaft and an inner peripheral surface of the sleeve facing each other is selectively provided with a dynamic pressure generating groove. 
     
     
         11 . The electric blower as set forth in  claim 10 , wherein the shaft includes a ball mounted on a surface facing the impeller with respect to an axial direction of the shaft. 
     
     
         12 . The electric blower as set forth in  claim 11 , wherein the impeller includes a plate mounted on a surface facing the ball. 
     
     
         13 . The electric blower as set forth in  claim 1 , further comprising an impeller cover covering the impeller,
 wherein the impeller cover is coupled to the motor housing.   
     
     
         14 . The electric blower as set forth in  claim 13 , wherein the impeller cover and the motor housing are screw-coupled by a clamp screw.