Axial type energy-saving fan blade for extrusion and cutting process

A fan blade and axial flow technology, applied in the field of axial flow energy-saving fan blades, can solve the problems of energy waste, poor economic benefit, increase in manufacturing cost, etc., and achieve the effects of high operation efficiency, reduced manufacturing cost and energy saving

Inactive Publication Date: 2007-02-07
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0007] The usual practice is to design and manufacture blade molds one by one according to the required air volume and wind pressure value. Expensive mold fees will lead to a substantial increase in manufacturing costs, so many fan manufacturers are interested in small-batch and large-diameter fan projects. Often reluctant to undertake manufacturing because of poor economic returns, leading to persistent energy waste

Method used

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  • Axial type energy-saving fan blade for extrusion and cutting process
  • Axial type energy-saving fan blade for extrusion and cutting process
  • Axial type energy-saving fan blade for extrusion and cutting process

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Embodiment Construction

[0023] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] The fan blade of the present invention is an airfoil type cavity blade, and the cross-sectional view of its structure is as follows: figure 1 As shown, it is composed of a hollow airfoil-shaped main body 1 at the front section and a solid trailing edge 2 at the rear section, and the material is made of aluminum alloy or glass fiber reinforced plastic (FRP). The petiole 5 is made of steel pipe, inserted into the special arc-shaped seat 3 in the middle of the inner cavity of the airfoil main body 1, and fastened to the blade with screws, and the other end of the petiole 5 is fixed on the impeller hub through a flange. The arc-shaped seat 3 can increase the contact surface area between the airfoil-shaped main body 1 and the blade handle 5, so as to reduce the amount of contact deformation. According to the size of the chord leng...

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Abstract

The invention relates to an axial flow energy-saving fan blade shaped by compression method, which is formed by hollow wing main body and solid tail edge, wherein the blade handle is inserted into the arc base of main chamber of wing to be fixed with the wing main body; another end of blade handle is fixed on the hub of blade wheel; the inner radius of blade is mounted with sealing plate, while the outer radius is mounted with end cover plate; the end cover plate has several water outlets; according to the size of the arc length of blade, several strengthen bars are arranged inside the chamber of main body to improve the blade rigidity; based on large fan, the main body can use segmented structure, while the segments are coupled by wedge grooves, without integrated mould and large compressor, to reduce the cost.

Description

technical field [0001] The invention relates to an axial-flow energy-saving fan blade, in particular to an axial-flow energy-saving fan blade formed by an extrusion cutting process, which can be used for axial-flow fans of various specifications. reduce manufacturing cost. It belongs to the technical field of fluid engineering. Background technique [0002] In many air-cooled heat exchange equipment and environmental control ventilation systems, wing-type axial flow fans are widely used. The diameter of the impeller is more than 10M, and the diameter of the small fan is only 40mm. 100 kilowatts, the census found that there are disadvantages of low operating efficiency, high energy consumption, serious energy waste, and high noise. [0003] Today, energy is in short supply and the degree of external dependence is gradually increasing. In order to achieve the goal of reducing the energy consumption per 10,000 yuan of GDP in Shanghai by 20% during the "Tenth Five-Year Plan", ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/38F04D29/02
Inventor 任世瑶徐开元谭正明张焕武
Owner SHANGHAI JIAO TONG UNIV
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