Bionic axial flow wind wheel

An axial flow wind and hub technology, which is applied to the components of the pumping device for elastic fluids, non-variable-capacity pumps, machines/engines, etc. , The effect of improving the performance of the wind turbine and reducing the noise

Active Publication Date: 2021-01-22
FANS TECH ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this patent, the tip of the blade is bent away from the chord line of the tip, so that the pressure surface at the tip of the blade is concave, but there is a difference from the shape of a bird's wing, and the gas flow state at the tip of the blade needs to be improved

Method used

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  • Bionic axial flow wind wheel
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  • Bionic axial flow wind wheel

Examples

Experimental program
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Effect test

Embodiment 1

[0045] Such as figure 1 with 2 As shown, a bionic axial flow wind wheel includes a hub 2 and a blade 1 installed on the circumferential side wall of the hub 2, and the material of the wind rotor blade 1 is one of plastic, metal or a combination of both . The blade 1 includes a blade root 11 and a blade top 12, the blade root 11 is a part in contact with the hub 2, the blade top 12 is opposite to the blade root 11 and away from the blade root 11 Part, the blade 1 also includes a blade leading edge 13 and a blade trailing edge 14 opposite to the blade leading edge 13, along the direction from the blade leading edge 13 to the blade trailing edge 14, the contour line at the blade leading edge 13 Include at least two curves with opposite bending directions. The projection line of the contour line of the leading edge 13 of the blade and the plane perpendicular to the axis of the hub 2 also includes at least two curves with opposite bending directions.

[0046] The blade leading ...

Embodiment 2

[0056] Such as Figure 8 As shown, this embodiment only describes the differences from the above embodiments. In this embodiment, the contour line of the leading edge 13 of the blade includes the first contour line ab close to the blade root 11, and the first contour line ab away from the blade root 11. 11 and the second contour line bc connected with the first contour line ab, the first contour line ab and the second contour line bc are curves with opposite bending directions, and the center of curvature of the first contour line ab Located on the outer side of the blade leading edge 13 and set away from the blade leading edge 13, so that the first contour line ab bends toward the blade trailing edge 14 and inwardly of the blade; the curvature of the second contour line bc The center is located on the inner side of said blade leading edge 13 and close to said blade leading edge 13 so that the second contour line bc is curved towards the blade leading edge 13 towards the blade...

Embodiment 3

[0058] This embodiment only describes the differences from the above embodiments. In this embodiment, the blade tip 12 is provided with multi-layer deflecting parts 121. The number of the deflecting parts 121 is at least two layers. The deflection parts 121 are sequentially arranged at intervals from the blade trailing edge 14 to the blade leading edge 13 , and multiple layers of the deflection parts 121 make there be several gaps on the blade tip 12 along the blade leading edge 13 to the blade trailing edge 14 . That is, there is a gap between every two layers of deflecting parts 121 . This design structure is similar to the multi-layer feather structure at the top of a bird's feather, and the multi-layer deflecting parts 121 are deflected toward the suction surface at the same time.

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Abstract

The invention discloses a bionic axial flow wind wheel. The bionic axial flow wind wheel comprises a hub and blades installed on the circumferential side wall of the hub. The blade material of the wind wheel is one of plastic and metal or a combination of both. Each blade comprises a blade root and a blade top, wherein the blade root is the part being in contact with the hub, and the blade top isthe part opposite to the blade root and away from the blade root. Each blade further comprises a blade front edge and a blade rear edge opposite to the blade front edge, wherein the contour line at the blade front edge comprises at least two curves with opposite bending directions in the direction from the blade front edge to the blade rear edge. The blade tops and the partial areas close to the blade tops are arranged in a deflection manner in the direction of the suction faces of the blades, and therefore the areas, close to the blade tops, of the blades are deflected to form deflection parts. The bionic axial flow wind wheel is designed in the manner that the shapes of the blades refer to the front edges of bird wings and wing blade tips, the wind wheel can effectively improve the flowing state between the blade tops and a collector, the efficiency of the wind wheel is improved, and meanwhile the noise of the wind wheel is lowered.

Description

technical field [0001] The invention belongs to the technical field of fans, and in particular relates to a bionic axial flow wind wheel. Background technique [0002] In the fan industry, at present, with the improvement of environmental protection requirements, energy saving and noise control are becoming more and more strict, but the axial flow wind wheel designed by traditional methods has problems of low efficiency and high noise, while birds in nature Humans show excellent aerodynamic performance and low noise characteristics in the process of predation, and bionics has gradually become a hot spot in fan research. [0003] The patent with publication number CN210715258U relates to a fan and an axial flow impeller. The axial flow impeller includes a first fan blade, the first fan blade includes a plurality of first blades and a first hub, and the plurality of first blades are arranged on the first hub at intervals. The first blade includes a first blade root and a fir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/32F04D29/38F04D29/66
CPCF04D29/325F04D29/386F04D29/388F04D29/666F04D29/668
Inventor 吴琪陈烁顺陈宗华
Owner FANS TECH ELECTRIC CO LTD
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