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Axial flow fan with multiple segment blades

  • US 7,025,569 B2
  • Filed: 12/18/2002
  • Issued: 04/11/2006
  • Est. Priority Date: 09/27/2002
  • Status: Active Grant
First Claim
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1. A blade structure with multiple segment blades, comprising:

  • a hub; and

    a plurality of blade units connected to a periphery of the hub and extending radially outward from the periphery, wherein each of the blade units at least includes a first blade and a second blade, and a segment space is positioned between the first blade and the second blade to maintain a laminar flow of fluid passing over a surface region of the first blade and the second blade, wherein the second blade is configured in front of an upper surface of the first blade in a direction perpendicular to a flow direction of the fluid, and has a leading edge positioned adjacent to a first rear edge of the first blade for introducing the fluid from the first blade and reforming a boundary layer of the fluid passed through the upper surface of the first blade so as to prevent a separation effect on the upper surface of the first blade.

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