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Title:
AN AXIAL FLOW FAN FOR DECREASING THE NOISE AND THE ENERGY CONSUMPTION
Document Type and Number:
WIPO Patent Application WO/2009/111956
Kind Code:
A1
Abstract:
An axial flow fan comprises a hub (2) and a plurality of blades(1) extending radially outwardly from the hub(2),a single-side arc brim(5) is provided at the tip each blade. The axial flow fan characterizes in that the angle or the average angle between the negative pressure face of the blades and the radial directions of the axial flow fan is 0o-90o, the optimum scope of the angle or the average angle is 6 o -50 o. The fan can decrease the noise and the energy consumption,and can be used widely in varieties of fields such as all kinds of the axial flow fans,the axial flow motors and the fluidtransportation and stir machine.

Inventors:
HAN, Wei (Room 401, Unit 1No.1 Building, No.8, Shantou Road, Shinan Distric, Qingdao Shandong 1, 266071, CN)
Application Number:
CN2009/070153
Publication Date:
September 17, 2009
Filing Date:
January 15, 2009
Export Citation:
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Assignee:
HAN, Wei (Room 401, Unit 1No.1 Building, No.8, Shantou Road, Shinan Distric, Qingdao Shandong 1, 266071, CN)
International Classes:
F04D29/38; F04D29/66; B63H1/26; B64C11/00; B64C11/18; B64C11/20; F04D29/24; F04D29/30
Foreign References:
CN2437887Y
US4334824A
US4664593A
FR2723150A1
Attorney, Agent or Firm:
QINGDAO LZ PATENT TRADEMARK OFFICE CO., LTD. (Room 505, Block B Futai Plaza,18, Hong Kong Middle Road,Shinan District, Qingdao, Shandong 1, 266071, CN)
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