Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Toshiki Ogawara0
Haruhisa Maruyama0
Michinori Watanabe0
Date of Patent
June 22, 2010
0Patent Application Number
120150180
Date Filed
January 16, 2008
0Patent Primary Examiner
Patent abstract
An axial-flow fan unit that produces less noise is provided. Blades 19 are exposed from a venturi 29. The shape of each of the blades 19 is so defined that a space formed between at least an inner surface 28a of each of web leg sections 28A to 28C and an edge 19a of each of the blades 19 located in the radially outward direction of the blades 19 expands toward the ends of the web leg sections 28A to 28C (or web bodies 30A to 30C). With this arrangement, noise produced when the blades 19 rotate along the web leg sections 28A to 28C is reduced.
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