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Title:
BIRD'S WING TYPE HIGH-PRESSURE AXIAL FLOW FAN BLADE AND COUNTER-ROTATING AXIAL FLOW FAN THEREOF
Document Type and Number:
WIPO Patent Application WO/2017/054387
Kind Code:
A1
Abstract:
A bird's wing type high-pressure axial flow fan blade and counter-rotating axial flow fan thereof. The blade comprises a blade body (1) and a blade shank (2). The blade body (1) consists of a blade head (101), a blade top (102), a blade tail (103) and a blade root (104). A windward side of the blade is a blade concave portion (106), and a leeward side of the blade is a blade convex portion (107). A cross-section of the blade from the blade root (104) to the blade top (102) is in a twisted shape. The blade concave portion (106) of the blade has an arc-shaped convex accelerating area (108) passing through the blade top (102) to the blade root (104) along an axis (105) of the blade body. The fan comprises an air inlet side blade (4) and an air outlet side blade (5). The air inlet side blade (4) and the air outlet side blade (5) are driven respectively by separate motors (6, 7) oppositely disposed. A blade tail (4013) of the air inlet side blade (4) is oppositely disposed to a blade head (5011) of the air outlet side blade (5). The blade tail (4013) of the air inlet side blade (4) and the blade head (5011) of the air outlet side blade (5) are straight sides parallel to central axes (4015, 5015).

Inventors:
CHEN, Xin (17F Building 1, TEDA Center No 15 Guanghua Road, Chaoyang District, Beijing 6, 100026, CN)
WANG, Yong (17F Building 1, TEDA Center No 15 Guanghua Road, Chaoyang District, Beijing 6, 100026, CN)
WEI, Junkang (17F Building 1, TEDA Center No 15 Guanghua Road, Chaoyang District, Beijing 6, 100026, CN)
Application Number:
CN2016/073410
Publication Date:
April 06, 2017
Filing Date:
February 04, 2016
Export Citation:
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Assignee:
BEIJING TOOZEN LAB TECHNOLOGY CO., LTD (17F Building 1, TEDA Center No 15 Guanghua Road, Chaoyang District, Beijing 6, 100026, CN)
International Classes:
F04D29/38; F04D25/16
Foreign References:
US2682925A1954-07-06
CN102003410A2011-04-06
CN2260907Y1997-08-27
CN105257596A2016-01-20
CN102003412A2011-04-06
JPH0821398A1996-01-23
CN2634159Y2004-08-18
Attorney, Agent or Firm:
BEIJING GLM INTELLECTUAL PROPERTY AGENCY LTD. (Unit 605, Henderson Centre Office Building 118 JianGuoMenNei Street, Beijing 5, 100005, CN)
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