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Draught fan vane wheel

A technology of fan impeller and wheel cover is applied to fan impeller. It can solve the problems of difficult processing, waste of materials, and high requirements for personnel quality, and achieve the effect of simple structure, convenient manufacturing and safe operation.

Active Publication Date: 2013-05-08
ANHUI ANFENG FAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to the limitation of the process conditions, there is no large arc transition at the joint of the wheel cover, and the stress transmitted from the outer diameter of the wheel cover to the inner hole cannot be evenly transmitted to the entire wheel cover inlet ring, so the stress at the interconnection will be reduced. Concentration, causing excessive stress, cracking the inlet ring, and causing safety accidents
[0005] The invention patent with the application number 201010543167.4 discloses a unequal-thick fan wheel, the thickness of the edge of the wheel is smaller than the thickness of the rest of the wheel, which can reduce the moment of inertia of the wheel while reducing the weight, to a certain extent It solves the problem that the stress of the wheel cover and the wheel disc increases gradually from the outer diameter to the inner hole, but the processing of this kind of wheel disc with different thickness is difficult, and processing it into a predetermined curve shape requires high quality of machine tools and personnel. And there is the same waste material problem as the existing unequal thickness roulette

Method used

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  • Draught fan vane wheel
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Examples

Experimental program
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Effect test

Embodiment 1

[0018] Such as figure 1 As shown, the present embodiment is a single-intake fan impeller, including blades 7, wheel disc 1, wheel cover 2, wheel cover inlet ring 3, and shaft disc 4. Two sides of the wheel disc 1 are connected by plug welding. Ring-shaped roulette force component plate 5, the inner hole of roulette force component plate 5 is welded to the inner hole of roulette 1; the conical wheel cover force component ring 6 is passed between the wheel cover 2 and the wheel cover inlet ring 3 Connected, one end of the wheel cover force component ring 6 is welded with the wheel cover 2, and the other end is welded with the wheel cover inlet ring 3.

[0019] A roulette force component plate 5 is added to the roulette inner hole 8, so that the gravitational force transmitted from the outer diameter of the roulette 1 to the roulette inner hole 8 will divert a part to the roulette force component plate 5, so that the roulette force component plate 5 Part of the stress of the whe...

Embodiment 2

[0022] Such as figure 2 As shown, this embodiment is a double-intake fan impeller, including blades 7, wheel disc 1, wheel cover 2, wheel cover inlet ring 3, and shaft disc 4. Two annular rings are connected on both sides of the wheel disc 1 by riveting. Wheel disc force component plate 5, the inner hole of the wheel disc force component plate 5 is welded to the inner hole of the wheel disc 1; the wheel cover 2 and the wheel cover inlet ring 3 are connected by a conical wheel cover force component ring 6 , one end of the wheel cover force component ring 6 is welded with the wheel cover 2, and the other end is welded with the wheel cover inlet ring 3.

[0023] A roulette force component plate 5 is added to the roulette inner hole 8, so that the gravitational force transmitted from the outer diameter of the roulette 1 to the roulette inner hole 8 will divert a part to the roulette force component plate 5, so that the roulette force component plate 5 Part of the stress of the w...

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Abstract

The invention aims to provide a draught fan vane wheel which can prevent an inner hole portion of a wheel cap and an inner hole portion of a wheel disc from being torn and an wheel cap inlet ring from being damaged so as to improve safety. The draught fan vane wheel comprises vanes, the wheel disc, the wheel cap, the wheel cap inlet ring and a shaft disc and is characterized in that the side face of the wheel disc is connected with an annular wheel disc component force plate in a riveting or plug welding mode, the wheel cap and the wheel cap inlet ring are connected through a tapered wheel disc component force ring, one end of the tapered wheel disc component force ring is welded with the wheel cap and the other end of the tapered wheel disc component force ring is welded with the wheel cap inlet ring. According to the draught fan vane wheel, due to the fact that a stress sharing structure which is simple in structure and convenient to manufacture is arranged, the stresses born by the inner hole of the wheel cap, the inner hole of the wheel disc and the wheel cap inlet ring are reduced and the safe operation of the vane wheel under the condition of high-speed rotation is guaranteed.

Description

[0001] technical field [0002] The invention belongs to the field of fluid machinery, and in particular relates to a fan impeller. [0003] Background technique [0004] Centrifugal fan, as a kind of impeller machinery for conveying air, is widely used in aviation, coal, electric power, metallurgy, electronics, automobile, air conditioning and other industrial production and daily life fields. The impeller is the most important part of the centrifugal fan, and its function is to convert the mechanical energy into the static pressure energy and kinetic energy of the gas. Fan impellers are generally composed of blades, discs, wheel covers, and shaft discs. During work, due to the influence of centrifugal force, the wheel discs and wheel covers are subject to greater force, because the linear velocity of the outer diameter of the impeller is faster than that of other positions of the impeller. The speed is higher, so the internal stress caused by the rotating centrifugal for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/28
Inventor 王勇
Owner ANHUI ANFENG FAN