Axial flow fan with multiple segment blades
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Abstract
An axial flow fan with a plurality of segment blades is described. The axial flow fan has a base, a hub and a plurality of blade units. The hub is mounted on, or pivots on, the base and supports the blade units. Each of the blade units is connected to a periphery of the hub and extends radially outward from the base has a plurality of segment-blades. A segment space between the segment blades reforms a boundary layer of fluid passing over the segment blades and reduces the thickness of the boundary layer on the blade surfaces. As a result, the separation between the blade surfaces and fluid is avoided to maintain a laminar flow of the fluid adjacent to the segment blades.
17 Citations
38 Claims
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1-23. -23. (canceled)
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24. An axial flow fan comprising:
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a rotor;
a frame;
a base disposed inside the frame for supporting the rotor; and
a plurality of stationary blade units mounted between the frame and the base, wherein each of the stationary blade units at least includes a first blade and a second blade, and a segment space between the first blade and the second blade maintains a laminar flow of the fluid passing over a surface region of the first blade and the second blade. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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Specification