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US 2009/0155080 A1Published application
Combination axial-flow fan
AssigneeTaiwei Fan Technology Co., Ltd.
InventorChien-Chun Yu
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Abstract
A high-performance low-noise combination axial-flow fan includes a fan hub that has a center connection portion for the connection of a fan motor shaft and a mounting groove extending around the periphery, and fan blades each having a wedge block disposed at the inner end for fastening to the mounting groove to secure the respective fan blade to the fan hub in such a manner that no gap is seen between each two adjacent fan blades when viewed from the front side.
Claims5
A combination axial-flow fan, comprising:
- a fan hub, said fan hub comprising a center connection portion for the connection of a fan motor shaft and a mounting groove extending around the periphery thereof;
- and
- a plurality of fan blades, each said fan blade comprising a wedge block disposed at an inner end thereof for fastening to said mounting groove to secure the respective fan blade to said fan hub.
Dependencies are inferred from the claim text.