Title:
BLADE, IMPELLER, AND BLOWER
Document Type and Number:
WIPO Patent Application WO/2018/126745
Kind Code:
A1
Abstract:
A blade, impeller, and blower. A trailing edge (12) of the blade (1) is provided with at least one concave arc segment (15), and at least one end point of the at least one concave arc segment (15) is located between a radial outer edge (13) and a radial inner edge (14) of the blade (1). The blade (1) is provided with at least one ridge structure protruding from a pressure surface (18) of the blade (1) toward a suction surface (17) thereof. The blade is provided with the at least one concave arc segment at the trailing edge thereof on the basis of a biomimicry concept, and is further provided with the protruding ridge structure, thus improving an airflow pattern at the trailing edge of the blade by means of changing a shape of the blade, and accordingly reducing noise.
Inventors:
CAO FENG (CN)
ZOU JIANHUANG (CN)
LIU ZHONGJIE (CN)
LONG BINHUA (CN)
LIU HAO (CN)
ZOU JIANHUANG (CN)
LIU ZHONGJIE (CN)
LONG BINHUA (CN)
LIU HAO (CN)
Application Number:
PCT/CN2017/103960
Publication Date:
July 12, 2018
Filing Date:
September 28, 2017
Export Citation:
Assignee:
GREE ELECTRIC APPLIANCES INC ZHUHAI (CN)
International Classes:
F04D29/30; F04D29/38
Foreign References:
| CN101725566A | 2010-06-09 | |||
| CN201739227U | 2011-02-09 | |||
| CN206530536U | 2017-09-29 | |||
| CN106640748A | 2017-05-10 | |||
| CN105240317A | 2016-01-13 | |||
| JP2001082383A | 2001-03-27 |
Other References:
See also references of EP 3567258A4
Attorney, Agent or Firm:
BEIJING XURUN LAW FIRM (CN)
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