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Mute axial flow fan

An axial flow fan, quiet technology, applied in axial flow pumps, components of pumping devices for elastic fluids, non-variable-capacity pumps, etc. Increase the effect of the guide effect

Inactive Publication Date: 2015-03-11
DEQING ZHENDA ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to ensure sufficient air volume, the axial flow fan has a high speed. At this time, the high-speed air flow and the motor itself will generate relatively large noise, which will have a negative impact on the use of electronic equipment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A silent axial flow fan, comprising a frame 1, a fan is arranged at the axis of the frame 1, the fan includes a stator 3 fixedly connected to the frame 1, a rotor 4 arranged on the stator 3, and a fan fixed on the circumference of the rotor 4 Fan blade 2, stator 3 is close to the air inlet of frame 1, rotor 4 is close to the air outlet of frame 1, stator 3 is provided with chamfer 6 on the air inlet side of frame 1, and the air outlet end of fan is provided with silent curved surface 12. The outer edge of the fan blade 2 on the air outlet side is provided with a raised strip 10; the raised strip 10 is provided with an outwardly inclined side edge 11. The fan blades 2 are fixed on the outer surface of the rotor 4; the outer surface of the rotor 4 is located between adjacent fan blades 2, and there are several air grooves 5 parallel to the fan blades 2, and the chamfer 6 of the stator 3 extends to the rotor 4 to the air grooves 5 entrances. The distances between adjacent...

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Abstract

The invention provides a mute axial flow fan. The mute axial flow fan comprises a frame; a fan is arranged at the axis of the frame; a plurality of fan blades are fixedly connected to the fan; an annular buffering slot is formed in the inner surface of the frame at the axial center position of the fan to surround the fan blades; a mute curved surface is formed at the air outlet end of the fan; a buffering curved surface is formed at the opening of the buffering slot. The mute axial flow fan is lower in noise and comfortable for use under the same rotating speed and air volume.

Description

technical field [0001] The invention relates to a fan, in particular to an axial flow fan with low noise. Background technique [0002] Cooling fans are installed in home appliances, OA, and IT equipment to cool electronic components that generate heat. In recent years, the miniaturization and high performance of these home appliances, OA, and IT equipment have been advancing in the market. [0003] To cope with the increase in the heat generated by electronic components, a small axial flow fan that is small and easy to obtain air volume is generally used as a fan. However, in order to ensure sufficient air volume, the axial flow fan has a relatively high speed. At this time, the high-speed air flow and the motor itself will generate relatively large noise, which will have a negative impact on the use of electronic equipment. Contents of the invention [0004] In order to solve the problems of the prior art, the invention provides a low-noise axial flow fan. [0005] Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D19/00F04D29/52F04D29/32F04D29/38F04D29/66
CPCF04D29/667F04D29/522
Inventor 蔡忠义
Owner DEQING ZHENDA ELECTRIC
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