Title:
COOLING FAN
Document Type and Number:
WIPO Patent Application WO/2022/092723
Kind Code:
A1
Abstract:
The present invention relates to a cooling fan having a waterproof structure of a printed circuit board (PCB) on which a motor driving circuit is mounted. The cooling fan according to the present invention comprises: a fan housing having an air outlet for discharging air, formed on the front surface thereof and an air inlet for introducing air, formed on the rear surface thereof; a rotation shaft having a lower portion rotatably supported by the fan housing; a rotor fixed to an upper portion of the rotation shaft; a stator arranged inside the rotor with a predetermined gap therebetween; an impeller connected to the outer periphery of the rotor and rotated together; the printed circuit board (PCB) arranged below the stator to connect power to the stator and having mounted thereon various circuit components of the motor driving circuit for controlling the cooling fan; and a PCB housing box which is connected to the rear surface of the fan housing through a plurality of bridges and accommodates the PCB in the center thereof, wherein a pin terminal which electrically connects a coil of the stator to the PCB is soldered at the upper end thereof to be connected and fixed, and the lower end of the pin terminal is connected to the PCB located inside the PCB housing box, through a waterproof rubber pad and the PCB housing box.
Inventors:
KIM BYUNG SOO (KR)
Application Number:
PCT/KR2021/014959
Publication Date:
May 05, 2022
Filing Date:
October 22, 2021
Export Citation:
Assignee:
AMOTECH CO LTD (KR)
International Classes:
F04D29/52; F04D25/06; F04D29/053; F04D29/08; F04D29/32; F04D29/66; H02K5/10; H02K11/30
Foreign References:
| US20100310390A1 | 2010-12-09 | |||
| US20150167682A1 | 2015-06-18 | |||
| KR920008056Y1 | 1992-10-22 | |||
| KR20190056047A | 2019-05-24 | |||
| KR20160029256A | 2016-03-15 | |||
| KR20190066898A | 2019-06-14 |
Attorney, Agent or Firm:
LEE, Jae Hwa (KR)
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