Title:
AXIAL FLOW FAN BLADE, VENTILATION DEVICE AND AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2020/125128
Kind Code:
A1
Abstract:
Provided are an axial flow fan blade, a ventilation device and an air conditioner. The axial flow fan blade comprises a hub (5) and a plurality of blades (4), two surfaces of each blade (4) are respectively a pressure surface (3) on the air outlet side and a suction surface (1) on the air inlet side, the radial outward edge portion of each blade (4) is a blade tip, the blade tip of each blade is provided with a first edge (21) and a second edge (22), wherein the first edge (21) is bent and extends towards the suction surface, and the second edge (22) is bent and extends towards the pressure surface. The axial flow fan blade can improve working capability of the blades (4), control the blade tip leakage vortex of the blades (4), and reduce the noise of the fan blade.
Inventors:
LIU ZHONGJIE (CN)
CAO FENG (CN)
HE HAOHAO (CN)
ZOU JIANHUANG (CN)
CAO FENG (CN)
HE HAOHAO (CN)
ZOU JIANHUANG (CN)
Application Number:
PCT/CN2019/109186
Publication Date:
June 25, 2020
Filing Date:
September 29, 2019
Export Citation:
Assignee:
GREE ELECTRIC APPLIANCES INC ZHUHAI (CN)
International Classes:
F04D29/38; F04D29/66
Foreign References:
| CN109538532A | 2019-03-29 | |||
| CN209743240U | 2019-12-06 | |||
| CN103486081A | 2014-01-01 | |||
| JP2017106409A | 2017-06-15 | |||
| CN201574972U | 2010-09-08 | |||
| CN106593952A | 2017-04-26 | |||
| US20140147282A1 | 2014-05-29 | |||
| US4757587A | 1988-07-19 |
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
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