LARGE-AIR-AMOUNT HEAT DISSIPATION FAN

WIPO Patent Application WO/2022/110642

A1

A large-air-amount heat dissipation fan, comprising a fan frame (1), an electric motor mounting base (2), an electric motor and a fan body (3), wherein the electric motor mounting base (2) is fixed to a rear air inlet of the fan frame (1) by means of guide vanes (4); the electric motor is mounted in the electric motor mounting base (2); the fan body (3) is mounted on an output shaft of the electric motor; at least three guide vanes (4) are provided and are circumferentially and evenly distributed with the electric motor mounting base (2) as the center; and the guide vanes (4) are in an arc shape, and the rear side surface of each guide vane (4) is an arc surface recessed forwards and the front side surface thereof is an arc surface protruding forwards. In the heat dissipation fan, the arc-shaped guide vanes (4) are used, which do not increase the production cost, not only have a pressurizing effect, but also can increase the amount of air, and the backward arc surfaces of the guide vanes (4) can be directly used as lead-in grooves of wires, such that the structure is more rational.

QIU RONGQUAN (CN)
JIN YAN (CN)
JIN WEI (CN)
SHEN WEIJIANG (CN)

PCT/CN2021/090888

June 02, 2022

April 29, 2021

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ZHEJIANG TAIDA MINIATURE ELECTRICAL MACHINERY CO LTD (CN)

F04D25/08; F04D29/54; F04D19/00

CN112392750A	2021-02-23
CN101004186A	2007-07-25
CN206329517U	2017-07-14
CN108708865A	2018-10-26
CN101446302A	2009-06-03
CN1403718A	2003-03-19
CN2544333Y	2003-04-09
CN204113754U	2015-01-21
US20030063987A1	2003-04-03

HANGZHOU FENGHE PATENT ATTORNEYS OFFICE CO., LTD. (CN)

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