Title:
FAN AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/080661
Kind Code:
A1
Abstract:
The present invention relates to a fan capable of preventing oil scattering without using an oil-scattering prevention washer and simultaneously preventing the escape of a rotary shaft due to a lift, and a manufacturing method therefor. The fan according to the present invention comprises: a cylindrical fan housing; a base having a bearing housing integrally formed therewith, the bearing housing protruding from the rear surface of the fan housing to the center portion thereof; a sleeve bearing inserted in the bearing housing; a rotary shaft, of which the lower portion is rotatably supported by the sleeve bearing; a rotor fixed to the upper portion of the rotary shaft; a stator which is coupled to the outer circumference of the bearing housing; and an impeller which is integrally formed with the outer circumference of the rotor and rotated along with the rotor, wherein the stator comprises: a stator core having a plurality of teeth, on which a coil is wound, formed by extending from a back yoke; a bobbin which surrounds the stator core and has an oil-scattering prevention portion extending to the inside of the bearing housing; and the coil wound on a coil winding portion of the bobbin, and the inner circumference of the oil-scattering prevention portion is extended to be adjacent to an escape prevention groove of the rotary shaft.
Inventors:
LEE HONG GEUN (KR)
UHM HEE CHUL (KR)
LEE SE KI (KR)
UHM HEE CHUL (KR)
LEE SE KI (KR)
Application Number:
PCT/KR2022/017096
Publication Date:
May 11, 2023
Filing Date:
November 03, 2022
Export Citation:
Assignee:
AMOTECH CO LTD (KR)
International Classes:
F04D25/08; F04D25/06; F04D29/053; F04D29/056; F04D29/32; F04D29/52
Foreign References:
| US20080267793A1 | 2008-10-30 | |||
| KR20100035068A | 2010-04-02 | |||
| KR20180066350A | 2018-06-19 | |||
| KR101800456B1 | 2017-11-27 | |||
| KR20090038618A | 2009-04-21 |
Attorney, Agent or Firm:
LEE, Jae Hwa (KR)
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