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Blade and axial-flow impeller using same

A blade and hub technology, applied in the field of axial flow impeller, can solve the problems of low aerodynamic performance and high noise of the blade, and achieve the effect of high static pressure and high efficiency

Active Publication Date: 2020-08-25
YORK GUANGZHOU AIR CONDITIONING & REFRIGERATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The leading edge and trailing edge of traditional blades are usually monotonous and smooth curves. Due to the severe flow separation on the surface of the blade and the formation of vortices, the aerodynamic performance of the blade is low and the noise is large.

Method used

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  • Blade and axial-flow impeller using same
  • Blade and axial-flow impeller using same
  • Blade and axial-flow impeller using same

Examples

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Embodiment Construction

[0034] Various embodiments of the present application will be described below with reference to the accompanying drawings, which form a part hereof. In the following drawings, the same reference numerals are used for the same components, and the similar reference numerals are used for similar components.

[0035] figure 1 is a perspective view of an axial flow impeller 100 using a blade according to an embodiment of the present application. Such as figure 1 As shown, the axial flow impeller 100 includes a hub 110 and three blades 112 . The hub 110 has an axis of rotation X, and a cross section of the hub 110 perpendicular to the axis of rotation X is circular. The three blades 112 are evenly arranged on the outer peripheral surface of the hub 110 and are integrally connected with the hub 110 . The hub 110 and the blades 112 are rotatable about the axis of rotation X together. As an example, the axial flow impeller 100 of the present application is clockwise (ie figure 1 ...

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PUM

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Abstract

The invention discloses a blade and an axial-flow impeller using the same. The blade comprises a blade tip, a blade root, a front edge, a tail edge, an upper surface and a lower surface. The upper surface and the lower surface are oppositely arranged, the blade tip, the blade root, the front edge and the tail edge are arranged around the upper surface and the lower surface, and connected with theupper surface and the lower surface. The blade is capable of rotating around a rotary axis, and the rotary axis is vertical to a normal plane. The blade tip comprises a blade tip base part and a bladetip tail part, the blade tip base part is close to the front edge, and the blade tip tail part is close to the tail edge, and tilted upwards relative to the blade tip base part. The attack angle of the chord of the blade tip tail part is larger than the attack angle of the chord of the blade tip base part, and the attack angle is an acute included angle between the chord and the normal plane. Theblade is capable of providing a high air volume, and higher in static pressure and efficiency.

Description

technical field [0001] The present application relates to the field of rotating machinery such as fans, pumps and compressors, and more precisely to a blade and an axial flow impeller using it. Background technique [0002] The leading and trailing edges of traditional blades are usually monotonous and smooth curves. Because the flow separation on the surface of the blade is severe and vortices are formed, the aerodynamic performance of the blade is low and the noise is large. Contents of the invention [0003] Exemplary embodiments of the present application may address at least some of the above-mentioned problems. [0004] According to the first aspect of the present application, the present application provides a blade, including a blade tip, a blade root, a leading edge, a trailing edge, an upper surface and a lower surface. The upper surface and the lower surface are arranged oppositely, and the blade top, the blade root, the leading edge and the trailing edge are a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/38F04D29/66
CPCF04D29/384F04D29/666F04D29/386F04D29/667F05D2240/304F05D2240/307F05D2250/184
Inventor 袁斌吴成刚马小魁王利朱剑
Owner YORK GUANGZHOU AIR CONDITIONING & REFRIGERATION