CN205896541U - Device of making an uproar falls in bending - Google Patents
Device of making an uproar falls in bending Download PDFInfo
- Publication number
- CN205896541U CN205896541U CN201620521597.9U CN201620521597U CN205896541U CN 205896541 U CN205896541 U CN 205896541U CN 201620521597 U CN201620521597 U CN 201620521597U CN 205896541 U CN205896541 U CN 205896541U
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- bending
- denoising device
- sound absorption
- dividing plate
- sound
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Abstract
The utility model discloses a device of making an uproar falls in bending comprises single crooked body or the crooked body stack of several, and the bending angle of crooked body is not less than 60. The inner wall of crooked body is provided with the sound absorption module, and the inside of crooked body is provided with baffle sound absorption module, baffle sound absorption module is had sound insulation function's solid baffle and constitutes in the sound absorption template of solid baffle both sides with setting up by the centre. Device of making an uproar falls in bending since its inside passage design into the arc for the loss of its fluid pressure is little, has excellent wide band sound transmission loss simultaneously, and is especially regional at the high frequency band, more traditional rectilinear form's silencer or matrix silencer, and the length of the silencer that need not to be markedly increased can reach higher sound transmission loses, and occupation space does not have energy -efficient excellent characteristics.
Description
Technical field
This utility model is related to pipeline-like acoustic filter correlative technology field, and specifically, this utility model is that a kind of bending disappears
Sound device or bending denoising device.
Background technology
In air inlet system and exhaust system, spy is in ventilating system, and acoustic filter generally divides positioned at inlet side or outlet side
Gas handling system end or gas extraction system end section.Normally, acoustic filter includes a housing, and an expansion chamber is located therein,
And outlet is derived from described expansion chamber.In order to increase sound transmission loss, it usually needs construct considerably long or structure
Make the acoustic filter of complexity.Such construction relatively needs more spaces to also increase the pressure loss and the increase of fluid simultaneously
Energy consumption.Acoustic filter as the utility model patent that Chinese Authorization Notice No. is cn103696840b and cn103899384b is announced is equal
It is using shape described above design.For another technical standpoint, in order to reduce the pressure loss of fluid, traditional acoustic filter base
This matrix form being combined using the rectilinear form acoustic filter of penetrating pattern, such as Chinese application publication number cn104008748a
Described in " noise and vibration control engineering manual " the 7th noise elimination piece (Ma Dayou etc. is write) 2002.But this open type
The rectilinear form acoustic filter of formula only has the wide transmission loss of local frequency, for the sound transmission loss effect of low frequency and high frequency
Difference, the sound transmission loss if necessary to improve high frequency then must be significantly increased the length of acoustic filter, unrealistic in practice.
Utility model content
The purpose of this utility model is that design one kind need not be significantly increased acoustic filter length, you can reaches and has more wideband
And high sound transmission loss, there is the denoising device of low fluid pressure loss simultaneously.
This utility model is achieved by the following technical solution: this bending denoising device, by single bending body or
It is several bending body superposition composition, the angle of bend of described bending body is not less than 60 °.
Further, the cross section of described bending body be circle, polygon, oval in any one.
Further, the inwall of described bending body is provided with sound absorption module.
Further, described bending body be internally provided with dividing plate sound absorbing module, described dividing plate sound absorbing module is by centre
The solid separator with sound insulation function and the sound absorption template composition being arranged at solid separator both sides.
Further, when described bending inboard wall of tube body cross-sectional diameter is more than 200mm, bending tubular body setting is not less than
1 dividing plate sound absorbing module.
Further, described dividing plate sound absorbing module is closely connected with the sound absorption module positioned at bending inboard wall of tube body.
Further, described dividing plate sound absorbing module place plane is parallel with bending body Bending Rotation plane, described dividing plate
The bending curvature of sound absorbing module is consistent with the bending curvature of bending body.
Further, the thickness of described solid separator is 0.5～50mm, the described sound absorption mould being arranged at solid separator both sides
Plate thickness is 30～300mm.
The beneficial effects of the utility model are:
1st, this bending denoising device, because its inner passage design camber is so that its fluid pressure loss is little, and has
Excellent wideband high sound transmission loss, particularly in high frequency region, eliminates the noise compared with the acoustic filter of traditional line shape or matrix
For device, the length that acoustic filter need not be significantly increased can reach the sound transmission loss of low fluid pressure loss and Geng Gao, no
Take up room, there are energy-efficient excellent characteristics.
2nd, this dividing plate sound absorbing module place plane within bending denoising device and the Bending Rotation plane of bending body are put down
OK, and curvature is consistent so that the fluid pressure loss of bending denoising device further reduces, it is not take up the premise of exceptional space
Under, have the advantages that to improve the power-equipment efficiency such as electromotor and blower fan, lifting energy use efficiency, reduce energy resource consumption.
3rd, the internal partition sound absorbing module of this bending denoising device has the effect of reinforcement, can strengthen large-scale bending noise reduction
The intensity of device is it is adaptable to large-scale use occasion.
4th, this bending denoising device can be combined by multiple single bending bodys, and combination form is flexibly, applied widely.
Brief description
Fig. 1 is this utility model first embodiment schematic diagram.
Fig. 2 is this utility model second embodiment schematic diagram.
Fig. 3 is this utility model 3rd embodiment schematic diagram.
Fig. 4 is this utility model fourth embodiment schematic diagram.
Fig. 5 is this utility model the 5th embodiment schematic diagram.
Wherein, 1, bending body, 1a, angle of bend, 11, sound absorption module, 2, dividing plate sound absorbing module, 21, solid separator,
22nd, absorb sound template.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment is described further to this utility model.
In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and enforcement
Example, is further elaborated to this utility model.It should be appreciated that specific embodiment described herein is only in order to explain this
Utility model, is not used to limit this utility model.
The utility model discloses a kind of bending denoising device, as shown in figure 1, this bending denoising device is by single swan-neck
Body 1 forms, and the angle of bend 1a of described bending body 1 is not less than 60 °；The inwall of bending body 1 is provided with sound absorption module 11.
As another embodiment, the cross section of above-mentioned bending body 1 can be circle, polygon, any in ellipse
A kind of.As shown in Fig. 2 in the present embodiment schematic diagram, showing a kind of polygonal embodiment, other embodiments, such as ellipse
Shape cross section is similar, repeats no more.
As another embodiment, described bending denoising device, can be formed by several bending body 1 stack combinations, as Fig. 3 institute
Show, the present embodiment schematic diagram shows that a kind of polygon bends the bending denoising device that body is superimposed to form, certainly, this bending
Denoising device also can be formed by stacking by multiple circular bend bodys or multiple oval bending body, can be according to actually used
Occasion flexible combination.
As shown in figure 4, as a kind of preferred version of above-described embodiment, described bending body 1 be internally provided with dividing plate
Sound absorbing module 2, described dividing plate sound absorbing module 2 has the solid separator 21 of sound insulation function by centre and is arranged at 21 liang of solid separator
The sound absorption template 22 of side forms.According to actually used occasion, when bending body 1 cross section of inboard wall diameter more than 200mm, swan-neck
The internal setting of body 1 is not less than 1 dividing plate sound absorbing module 2.Described dividing plate sound absorbing module 2 and the sound absorption positioned at bending body 1 inwall
Module 11 closely connects.
As another embodiment, described dividing plate sound absorbing module 2 place plane is parallel with bending body 1 Bending Rotation plane,
The bending curvature of dividing plate sound absorbing module 2 is consistent with the bending curvature of bending body 1.
As another embodiment, the thickness of described solid separator 21 is 0.5～50mm, and solid separator 21 can be by metal or non-
Metal material is made；Described sound absorption template 22 thickness being arranged at solid separator 21 both sides is 30～300mm, sound absorption template 22 by
The glass fibre of high acoustic absorption performance or rock wool material are made.
As shown in figure 5, through three-dimensional software simulation, the present embodiment schematic diagram shows this bending denoising device and generic linear
The sound transmission loss contrast of type acoustic filter.In figure, top curve is that sound under 0～4000hz for this bending denoising device passes
Defeated loss, lower curve is sound transmission loss under 0～4000hz for the ordinary straight line style acoustic filter, can contrast from figure
Go out, this bending denoising device has excellent sound transmission loss in high frequency.
Above description is to explanation of the present utility model, is not to restriction of the present utility model, this utility model is limited
Scope referring to claim, without prejudice in the case of this utility model basic conception, this utility model can make other shapes
The modification of formula.
Claims (8)
1. a kind of bending denoising device is it is characterised in that be superimposed by single bending body (1) or several bending body (1)
Composition, the angle of bend (1a) of described bending body (1) is not less than 60 °.
2. a kind of bending denoising device according to claim 1 is it is characterised in that the cross section of described bending body (1)
Be circle, polygon, ellipse in any one.
3. a kind of bending denoising device according to claim 1 is it is characterised in that the inwall of described bending body (1) sets
It is equipped with sound absorption module (11).
4. a kind of bending denoising device according to claim 1 is it is characterised in that the inside of described bending body (1) sets
It is equipped with dividing plate sound absorbing module (2), described dividing plate sound absorbing module (2) has solid separator (21) and the setting of sound insulation function by centre
Sound absorption template (22) composition in solid separator (21) both sides.
5. a kind of bending denoising device according to claim 4 is it is characterised in that described bending body (1) inwall is transversal
When face diameter is more than 200mm, setting inside bending body (1) is not less than 1 dividing plate sound absorbing module (2).
6. a kind of bending denoising device according to claim 4 or 5 it is characterised in that described dividing plate sound absorbing module (2) with
The sound absorption module (11) being located at bending body (1) inwall closely connects.
7. a kind of bending denoising device according to claim 4 or 5 is it is characterised in that described dividing plate sound absorbing module (2) institute
Parallel with bending body (1) Bending Rotation plane in plane, the bending curvature of dividing plate sound absorbing module (2) and bending body (1)
Bending curvature is consistent.
8. a kind of bending denoising device according to claim 4 is it is characterised in that the thickness of described solid separator (21) is
0.5 ~ 50mm, described sound absorption template (22) thickness being arranged at solid separator (21) both sides is 30 ~ 300mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620521597.9U CN205896541U (en) | 2016-06-01 | 2016-06-01 | Device of making an uproar falls in bending |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620521597.9U CN205896541U (en) | 2016-06-01 | 2016-06-01 | Device of making an uproar falls in bending |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205896541U true CN205896541U (en) | 2017-01-18 |
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ID=57767280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620521597.9U Active CN205896541U (en) | 2016-06-01 | 2016-06-01 | Device of making an uproar falls in bending |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205896541U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889690A (en) * | 2016-06-01 | 2016-08-24 | 四川五环石化装备有限公司 | Bent noise lowering device |
| CN106638859A (en) * | 2017-02-24 | 2017-05-10 | 湖南匡为科技有限公司 | Ventilating pipeline and toilet deodorization system |
| CN113339862A (en) * | 2021-06-11 | 2021-09-03 | 常州大学 | Range hood waste heat recovery system with active noise reduction device |
-
2016
- 2016-06-01 CN CN201620521597.9U patent/CN205896541U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889690A (en) * | 2016-06-01 | 2016-08-24 | 四川五环石化装备有限公司 | Bent noise lowering device |
| CN106638859A (en) * | 2017-02-24 | 2017-05-10 | 湖南匡为科技有限公司 | Ventilating pipeline and toilet deodorization system |
| CN113339862A (en) * | 2021-06-11 | 2021-09-03 | 常州大学 | Range hood waste heat recovery system with active noise reduction device |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |