ELECTRIC BLOWER

• US 20140134020A1
• Filed: 02/07/2013
• Published: 05/15/2014
• Est. Priority Date: 11/09/2012
• Status: Abandoned Application

• Current Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Original Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Inventors: Cho, Yong Wan
• Application Number:
  US13/762,081
• Publication Number:
  US 20140134020A1
• Time in Patent Office: Days
• US Class Current: 417/420
• CPC Class Codes: F04D 17/16 for displacing without appreciable compression
• CPC Class Codes: F04D 25/0606 the electric motor being specially adapted for integration in the pump
• CPC Class Codes: F04D 29/051 Axial thrust balancing
• CPC Class Codes: F04D 29/057 hydrostatic; hydrodynamic
• CPC Class Codes: F04D 29/058 magnetic; electromagnetic
• CPC Class Codes: F04D 29/281 for fans or blowers

Abstract

Disclosed herein is an electric blower including: an impeller; and a driving module including a rotor part coupled to the impeller in order to drive the impeller and a stator part, the rotor part including a magnet, the stator part including an armature configured of a core and a coil that are positioned to face the magnet, and the rotor part and the stator part including an air bearing part formed therebetween, wherein the driving module is received in the impeller.

Claims

1. An electric blower comprising:

an impeller; and

a driving module including a rotor part coupled to the impeller in order to drive the impeller and a stator part, the rotor part including a magnet, the stator part including an armature configured of a core and a coil that are positioned to face the magnet, and the rotor part and the stator part including an air bearing part formed therebetween,

wherein the rotor part and the impeller are rotated by electromagnetic force of the magnet and the armature, and the driving module is received in the impeller.

2. 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 hub coupled to the sleeve and including the magnet coupled to an inner peripheral portion thereof.

3. The electric blower as set forth in claim 2, wherein the hub includes:

a disk part coupled to the sleeve and extended from the sleeve in an outer diameter direction of the shaft; and

a side wall part extended downwardly in an axial direction of the shaft from an end portion of the disk part in the outer diameter direction and including the magnet mounted thereon.

4. The electric blower as set forth in claim 2, wherein the sleeve and the shaft are mounted with magnetic bearing magnets at surfaces facing each other, respectively.

5. The electric blower as set forth in claim 4, wherein the magnetic bearing magnet is mounted at an upper end portion of the sleeve.

6. The electric blower as set forth in claim 4, wherein the magnetic bearing magnet has an annular ring shape.

7. The electric blower as set forth in claim 1, wherein the rotor part of the driving module includes:

a sleeve rotatably supported by the shaft; and

a magnet coupled to the sleeve so as to face the armature of the stator part.

8. The electric blower as set forth in claim 1, wherein the stator part of the driving module includes:

a shaft rotatably supporting the rotor part;

a base to which the shaft is fixedly coupled; and

the armature coupled to the base and configured of the core and the coil.

9. The electric blower as set forth in claim 8, wherein the shaft has a micro gap with the sleeve and is insertedly coupled to the sleeve so that an air bearing part is formed, and dynamic pressure generating grooves are formed in an outer peripheral surface of the shaft facing the sleeve in a radial direction of the shaft.

10. The electric blower as set forth in claim 9, wherein the shaft further includes a ball mounted on a surface facing the impeller in an axial direction of the shaft.

11. The electric blower as set forth in claim 10, wherein the shaft is formed with a ball receiving groove for mounting the ball at a central portion of an upper end surface thereof.

12. The electric blower as set forth in claim 11, wherein the impeller further 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; and

a motor housing coupled to the impeller cover and including the stator part mounted therein.