CN202348788U

CN202348788U - Noise reducing device of fan

Info

Publication number: CN202348788U
Application number: CN2011204601979U
Authority: CN
Inventors: 宁守庆; 张黎林; 郭宪杰; 梁亮
Original assignee: China Tobacco Henan Industrial Co Ltd
Current assignee: China Tobacco Henan Industrial Co Ltd
Priority date: 2011-11-18
Filing date: 2011-11-18
Publication date: 2012-07-25
Anticipated expiration: 2021-11-18

Abstract

The utility model discloses a noise reducing device of a fan. A noise reducing barrel is arranged at the position of an air inlet of the fan in a butting way; noise reducing caps are covered at intervals outside the noise reducing barrel; noise reducing boxes are covered at intervals outside the noise reducing caps; noise absorbing material layers are arranged on the inner walls of the noise reducing barrel, the noise reducing caps and the noise reducing boxes; the thickness of the noise absorbing material layer is 60mm; and a conical opening is arranged at the outer end of the noise reducing barrel. The noise reducing device is simple in structure and practical in function; the original section as an entry of air stream is changed into S-shaped direction, so that the noise can be fully absorbed by the noise absorbing materials, and the noise hazard is greatly reduced; and a lateral air intake way is adopted, so that heat produced by a motor is fully brought away by high-speed air stream, and the heat-dissipation problem of the motor is solved at the same time.

Description

A kind of blower denoising device

Technical field

The utility model relates to a kind of blower denoising device.

Background technique

All can there be boiler the boiler room between kinetic energy vehicle at present; Blower noise is bigger during boiler operatiopn; The warp actual measurement on average about 102 decibels, not only has a strong impact on the daily life of surrounding resident, and in such environment, works for a long time and can work the mischief to the healthy of worker.

The model utility content

The utility model provides a kind of blower denoising device, and noise reduction is better, has solved the heat dissipation problem of blower motor simultaneously.

In order to solve the problems of the technologies described above, the utility model adopts following technological scheme: a kind of blower denoising device, and to being equipped with hush pipe, the hush pipe outside is covered with the noise reduction cap at interval at the blower inlet place, and the outside of noise reduction cap is covered with Sound Attenuator at interval; The inwall of hush pipe, noise reduction cap, Sound Attenuator is provided with sound-absorbing material layer.

The thickness of sound-absorbing material layer is 60mm.

The hush pipe outer end is provided with taper mouth.

Sound Attenuator is of a size of 2400mm * 2000mm * 2000mm, and hush pipe is of a size of 700mm * 700mm * 500mm, and the noise reduction cap is of a size of 1100mm * 1100mm * 300mm.

The utility model is simple in structure, function is practical, and through setting up hush pipe, noise reduction cap, Sound Attenuator, the boiler blower noise is reduced to 78 decibels by original about 102 decibels, can be reduced to about 45 decibels near the residential building, greatly reduces noise hazard.

In the utility model, air-flow is got into by original tangent plane and changes the entering of serpentine direction into, and noise can be absorbed by sound absorbing material fully; Adopt side air intake mode, make high velocity air fully take away the heat that motor self produces, also solve the motor radiating problem simultaneously well.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 1 is the A-A sectional view of Fig. 1.

Embodiment

Embodiment: like Fig. 1, shown in Figure 2, a kind of blower denoising device, to being equipped with hush pipe 5, hush pipe 5 outer ends are provided with taper mouth at blower 1 intake grill place, and hush pipe 5 outsides are covered with noise reduction cap 4 at interval, and the outside of noise reduction cap 4 is covered with Sound Attenuator 3 at interval; The inwall of hush pipe 5, noise reduction cap 4, Sound Attenuator 5 is provided with sound-absorbing material layer 6, and sound-absorbing material layer 6 can be fixed with steel wire.The thickness of sound-absorbing material layer 6 is 60mm, and sound-absorbing material layer 6 can adopt some sound absorbing materials commonly used to process, for example acoustical cotton.In the present embodiment, Sound Attenuator 3 is of a size of 2400mm * 2000mm * 2000mm, and hush pipe 5 is of a size of 700mm * 700mm * 500mm, and noise reduction cap 4 is of a size of 1100mm * 1100mm * 300mm.

Judge noise owing to air motion causes through inspection, this noise like fundamentally is difficult to eliminate, and can only reduce its injury to people's ear through blocking-up.Therefore the utility model utilizes sound diffusion principle, on blower, installs hush pipe, noise reduction cap, Sound Attenuator additional, through after the multistage noise reduction process treating, can reach the man-made noise standard.

When using, air-flow is got into by original tangent plane and changes 2 entering of serpentine direction into, and noise can be absorbed by sound absorbing material fully; Owing to adopt side air intake mode, make high velocity air fully take away the heat that motor self produces, also solve the motor radiating problem simultaneously well.

Claims

1. blower denoising device is characterized in that: to being equipped with hush pipe, the hush pipe outside is covered with the noise reduction cap at interval at the blower inlet place, and the outside of noise reduction cap is covered with Sound Attenuator at interval; The inwall of hush pipe, noise reduction cap, Sound Attenuator is provided with sound-absorbing material layer.

2. blower denoising device according to claim 1 is characterized in that: the thickness of sound-absorbing material layer is 60mm.

3. blower denoising device according to claim 1 and 2 is characterized in that: the hush pipe outer end is provided with taper mouth.

4. blower denoising device according to claim 3 is characterized in that: Sound Attenuator is of a size of 2400mm * 2000mm * 2000mm, and hush pipe is of a size of 700mm * 700mm * 500mm, and the noise reduction cap is of a size of 1100mm * 1100mm * 300mm.