Title:
BLADE, AXIAL FLOW AIRFOIL, AND FAN
Document Type and Number:
WIPO Patent Application WO/2022/062430
Kind Code:
A1
Abstract:
Provided are a blade (2), axial flow airfoil, and fan. The blade (2) comprises a pressure surface (25), a suction surface (26), a blade base part (23), a blade top part (24), a leading edge part (21), and a trailing edge part (22), defining a cylindrical surface where the blade base part (23) is located as the blade base element surface (31), the cylindrical surface where the blade top part (24) is located as the blade top element surface (34), the cylindrical surface located between them being the 1/2 element surface (32), the cylindrical surface located midway between the top element surface (34) and the 1/2 element surface (32) of the blade being the 3/4 element surface (33); the maximum distance between the leading edge part (21) and the trailing edge part (22) at the blade base element surface (31), at the 1/2 element surface (32), at the 3/4 element surface (33), and at the blade top element surface (34) are l1, l2, l3, and l4, respectively, wherein l1 < l2 < l3 < l4. The airfoil can effectively increase outlet air speed, matching the aerodynamic performance of the blade (2) to the motor, ensuring the airflow of the fan made from the blade (2).
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| WO/2017/118794 | FAN MODULE WITH VARIABLE-PITCH BLADES FOR A TURBINE ENGINE |
| WO/2019/130441 | ROTOR BLADE, AXIAL-FLOW BLOWER, AND CEILING FAN |
Inventors:
LIANG HAO (CN)
LIU ZHOU (CN)
CHEN YUQIANG (CN)
WANG YONG (CN)
LIU JIANYOU (CN)
ZHANG CHI (CN)
LIU ZHOU (CN)
CHEN YUQIANG (CN)
WANG YONG (CN)
LIU JIANYOU (CN)
ZHANG CHI (CN)
Application Number:
PCT/CN2021/094343
Publication Date:
March 31, 2022
Filing Date:
May 18, 2021
Export Citation:
Assignee:
GREE ELECTRIC APPLIANCES INC ZHUHAI (CN)
International Classes:
F04D29/32; F04D29/38; F04D29/66
Domestic Patent References:
| WO2020110969A1 | 2020-06-04 | |||
| WO2020110967A1 | 2020-06-04 |
Foreign References:
| CN111980964A | 2020-11-24 | |||
| CN212563793U | 2021-02-19 | |||
| CN106438470A | 2017-02-22 | |||
| CN209687756U | 2019-11-26 | |||
| CN205806014U | 2016-12-14 | |||
| CN108980104A | 2018-12-11 | |||
| KR20090132786A | 2009-12-31 |
Attorney, Agent or Firm:
BEIJING XURUN LAW FIRM (CN)
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