Title:
FAN HEAD ASSEMBLY AND FAN
Document Type and Number:
WIPO Patent Application WO/2022/142379
Kind Code:
A1
Abstract:
A fan, comprising a grille net and a fan blade (1). The fan blade (1) is provided with a plurality of blades. The grille net comprises a plurality of grille bars (2) which are radially distributed, and comprises a rear net (31) and a front net (32). The fan blade (1) is arranged between the rear net (31) and the front net (32). Each grille bar (2) of at least the rear net (31) is bent towards the same direction, and the bending direction is opposite to the rotation direction of the blades of the fan blade (1). The grille bars (2) of the rear net (31) are arranged to be bent towards the same direction, and the bending direction is opposite to the rotation direction of the blades of the fan blade (1), so that the broadband noise in the operation process of the fan blade can be reduced while the distance between the rear net and the fan blade does not need to be lengthened, and thus the aerodynamic noise is reduced, and the overall noise of the fan is reduced.
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Inventors:
RAO CHANGJIAN (CN)
LIU ZHOU (CN)
SHEN ZHIQIANG (CN)
FENG SHUANG (CN)
LIANG HAO (CN)
ZHANG CHI (CN)
LIU ZHOU (CN)
SHEN ZHIQIANG (CN)
FENG SHUANG (CN)
LIANG HAO (CN)
ZHANG CHI (CN)
Application Number:
PCT/CN2021/113321
Publication Date:
July 07, 2022
Filing Date:
August 18, 2021
Export Citation:
Assignee:
GREE ELECTRIC APPLIANCES INC ZHUHAI (CN)
International Classes:
F04D29/70
Foreign References:
| CN112628218A | 2021-04-09 | |||
| CN106837832A | 2017-06-13 | |||
| CN210440283U | 2020-05-01 | |||
| CN108194394A | 2018-06-22 | |||
| US6270313B1 | 2001-08-07 |
Attorney, Agent or Firm:
BEIJING XURUN LAW FIRM (CN)
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