Axial flow fan comprising blades with wing-type guide plates and guide blades with bionic tail edges

A deflector and blade technology, applied in the field of axial flow fans, can solve problems such as exhaust noise, and achieve the effects of reducing noise, improving leakage loss, and reducing eddy current noise.

Active Publication Date: 2016-07-06
嘉兴芸诗娇电子商务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the fan outlet is directly discharged into the atmosphere, there will be exhaust noise

Method used

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  • Axial flow fan comprising blades with wing-type guide plates and guide blades with bionic tail edges
  • Axial flow fan comprising blades with wing-type guide plates and guide blades with bionic tail edges
  • Axial flow fan comprising blades with wing-type guide plates and guide blades with bionic tail edges

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] Such as figure 1 As shown, the axial flow fan is composed of 5 parts, including 1. a net cover, 2. a motor, 3. a guide vane impeller, 4. an outer cylinder, 5. an impeller; the guide vane impeller 3 and the outer cylinder 4 are fixed together, The motor 2 is fixed on the web plate of the inner cylinder of the guide vane impeller 4, and the working parameter of the motor 2 is 720r / min, and the power is 4KW; The gap is 10mm; the net cover 1 is installed on the outer cylinder, which has the functions of rectifying and preventing foreign matter from entering.

[0018] Such as figure 1 , 2 As shown in , 3 and 4, the impeller 5 is driven by the motor 2 to do work for the gas to increase the dynamic pressure and static pressure of the gas. The blade 5-2 on the impeller 5 is a circular arc plate blade designed by the equal circulation isolated airfoil ...

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Abstract

The invention discloses an axial flow fan comprising blades with wing-type guide plates and guide blades with bionic tail edges. The axial flow fan is characterized in that four guide plates are uniformly added on every impeller blade and are disposed at the positions as high as 25%, 50% and 75% of the height of every blade and the blade top respectively. The wing-type guide plates are obtained by keeping mean camber lines of the blades, where the guide plates are disposed, unchanged and superposing NACA four-figure wing-type thickness distribution. With the aid of the wing-type guide plates, fluid in an impeller can flow more steadily, and boundary layers are thinner, so that fan efficiency is improved, and leakage loss and vortex noise can be reduced. The guide plates at the blade tops are large in area to form complicated vortexes in blade top gaps, so that blade top leakage flow can be improved effectively. Based on three improvements, the axial flow fan is higher in efficiency and lower in noise, thereby being energy saving and environment friendly.

Description

technical field [0001] The invention belongs to the technical field of axial flow fans, in particular to an axial flow fan with blades with airfoil deflectors and guide vanes with bionic trailing edges. Background technique [0002] The axial flow fan is a machine that relies on the input mechanical energy to increase the gas pressure and discharge the gas. It is widely used in ventilation, dust extraction and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and induction of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances ; Grain drying and selection; wind tunnel wind source and hovercraft inflation propulsion, etc., have very important applications in various industries of the national economy. According to statistics, the power consumption of fans accounts for about 10% of the country's power generation, and the average power consumption of main coal mines accou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D25/08F04D29/38F04D29/32F04D29/54F04D29/68F04D29/70
CPCF04D25/08F04D29/329F04D29/384F04D29/388F04D29/541F04D29/681F04D29/703
Inventor 窦华书许文倩徐金秋贾会霞姜陈锋李昆航陈小平魏义坤杨徽
Owner 嘉兴芸诗娇电子商务有限公司
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