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Axial fan

A technology of axial flow fan and fan, which is applied in the direction of mechanical equipment, machine/engine, liquid fuel engine, etc., to reduce noise and improve the environment

Inactive Publication Date: 2011-04-27
常熟市鼓风机有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The structure of the axial fan in the prior art is Figure 3, it includes a cylinder 1 with a shroud 11 at one end, a motor 2 and a fan 3. Although the axial flow fan with this structure can satisfy Ventilation and dust removal requirements for textile workshops in the textile industry, but there are insufficient noises in the working process, which will cause noise pollution to the workplace

Method used

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Experimental program
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Effect test

Embodiment 1

[0020] please see figure 1 , one end (also called one side) is provided with a cylindrical body 1 having a bell mouth-shaped shroud 11, the cylindrical body 1 needs to be supported by a cylindrical body seat 13 in the state of use, and the cylindrical body 1 The motor 2 is installed through the motor bracket 22 in the cylinder cavity of the motor 2, and the fan 3 is fixed on the motor shaft 21 of the motor 2.

[0021] As the technical point of the technical solution provided by the present invention, a groove 12 in a generally U-shaped shape is provided on the inner wall of the cylinder body 1, that is, the wall of the cylinder cavity, and the sound-absorbing ring 4 is embedded in the groove 12 to absorb sound. There is a gap 41 between the ring 4 and the blade side edge of the blade 31 of the fan 3. The size of the gap 41 is preferably 0.3-0.8 cm, preferably 0.4-0.6 cm, and more preferably 0.5 cm. The gap 41 is 0.5 cm. Although the shape of the groove 12 selected in this e...

Embodiment 2

[0023] The picture is omitted, the glass fiber cloth is used as the sound-absorbing ring 4 and directly fixed on the inner wall of the cylinder 1, the fixing method can be fixed by means of epoxy resin or other similar adhesives, so as to form a protrusion on the inner wall of the cylinder 1 The sound-absorbing ring 4 of the thickness of the glass fiber cloth on the inner wall surface of the cylinder body 1, and the rest are the same as the description of the embodiment 1.

Embodiment 3

[0025] The diagram is omitted, the non-woven fabric is used as the sound-absorbing ring 4 and is directly fixed on the inner wall of the cylinder 1, the fixing method is the same as that of the embodiment 2, and the rest is the same as the description of the embodiment 1.

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Abstract

The invention relates to a propeller fan which belongs to the technical field of fanner. The propeller fan comprises a cylinder body with an air guide sleeve at one end, a motor which is installed in the cylinder body and a fan which is fixed at a motor shaft of the motor. The propeller fan is characterized in that the internal wall of the cylinder body is provided with a sound absorption ring, the position of which is corresponding to a lateral edge of a vane of the fan; and a gap is kept between the sound absorption ring and the lateral edge of the vane. The propeller fan has the advantagesthat the sound absorption ring is arranged on the internal wall of the cylinder body, and the sound absorption ring is corresponding to the lateral edge of the vane of the fan, thereby being capable of reducing the noise effectively and improving the environment of the working field.

Description

technical field [0001] The invention belongs to the technical field of textile ventilators, and in particular relates to an axial flow ventilator. Background technique [0002] The structure of the axial flow fan in the prior art is as follows: image 3 As shown, it includes a cylinder 1 with a shroud 11 at one end, a motor 2 and a fan 3. Although the axial flow fan with this structure can meet the ventilation and dust removal requirements of textile workshops in the textile industry, there is a lot of noise in the working process. Insufficient, causing noise pollution to the workplace. For a long time, the industry has generally believed that since the structural design of axial flow fans has become saturated, it is difficult or even impossible to make breakthroughs in the noise reduction design of axial flow fans, even if it is a very slight improvement. However, the applicant has carried out long-term exploration and found a way to reduce the noise of the axial flow fa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D25/08F04D29/66
Inventor 戴义徐肖鸣
Owner 常熟市鼓风机有限公司