CN105889690A - Bent noise lowering device - Google Patents
Bent noise lowering device Download PDFInfo
- Publication number
- CN105889690A CN105889690A CN201610383740.7A CN201610383740A CN105889690A CN 105889690 A CN105889690 A CN 105889690A CN 201610383740 A CN201610383740 A CN 201610383740A CN 105889690 A CN105889690 A CN 105889690A
- Authority
- CN
- China
- Prior art keywords
- bending
- sound absorbing
- denoising device
- bent
- dividing plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/033—Noise absorbers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L43/00—Bends; Siphons
Abstract
The invention discloses a bent noise lowering device. The bent noise lowering device is composed of a single bent pipe body or formed by stacking a plurality of bent pipe bodies. The bending degree of the bent pipe body is not smaller than 60 degrees. A sound absorbing module is arranged on the inner wall of the bent pipe body. A partition board sound absorbing module is arranged in the bent pipe body and composed of a solid partition board with a sound isolation function in the middle and sound absorbing templates arranged on the two sides of the solid partition board. According to the bent noise lowering device, due to the fact that an inner channel of the bent noise lowering device is designed into an arc, and the pressure losses of fluid of the bent noise lowering device are made to be small; and meanwhile excellent broadband sound transmission losses are achieved, especially in a high broadband area, compared with a traditional linear silencer or a matrix silencer, higher sound transmission losses can be achieved without obviously increasing the length of the silencer, no space is occupied, and the excellent beneficial effect of high efficiency and energy saving are achieved.
Description
Technical field
The present invention relates to pipeline-like acoustic filter correlative technology field, specifically, the present invention is a kind of bending acoustic filter or bending denoising device.
Background technology
In air inlet system and exhaust system, spy is in ventilating system, and acoustic filter generally divides gas handling system end or the gas extraction system end section being positioned at inlet side or outlet side.Normally, acoustic filter includes that a housing, an expansion chamber are located therein, and outlet is derived from described expansion chamber.In order to increase sound transmission loss, it usually needs construct considerably long or that structure is complicated acoustic filter.Such structure relatively needs more space too increase the pressure loss of fluid simultaneously and increase energy consumption.The acoustic filter announced such as the patent of invention that China's Authorization Notice No. is CN103696840B and CN103899384B is all to use shape described above design.For another technical standpoint, for the pressure loss reducing fluid of knowing clearly, traditional acoustic filter uses the matrix form that the rectilinear form acoustic filter of penetrating pattern combines substantially, as described in China application publication number CN104008748A and " noise and vibration control engineering manual " the 7th noise elimination piece (Ma Dayou etc. are write) 2002.But the rectilinear form acoustic filter of this penetrating pattern only has the transmission loss that local frequency is wide, sound transmission loss weak effect for low frequency and high frequency, if needing to improve the sound transmission loss of high frequency, the length of acoustic filter must be significantly increased, unrealistic in practice.
Summary of the invention
The purpose of the present invention is that design is a kind of i.e. be can reach have and high pitch transmission loss without acoustic filter length is significantly increased, with having the denoising device that low flow pressure power is lost.
The present invention is achieved through the following technical solutions: this bending denoising device, is made up of single bending body or several bending body superposition, and the angle of bend of described bending body is not less than 60 °.
Further, the cross section of described bending body is any one in circle, polygon, ellipse.
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 had the solid separator of sound insulation function by centre and is arranged at the sound absorption template of solid separator both sides and forms.
Further, when described bending inboard wall of tube body cross-sectional diameter is more than 200mm, bending tubular body is arranged not less than 1 dividing plate sound absorbing module.
Further, described dividing plate sound absorbing module and the sound absorption module compact siro spinning technology being 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, and the bending curvature of described dividing plate sound absorbing module is consistent with the bending curvature of bending body.
Further, the thickness of described solid separator is 0.5 ~ 50mm, described in be arranged at the sound absorption template thickness of solid separator both sides be 30 ~ 300mm.
The beneficial effects of the present invention is:
1, this bending denoising device is designed to arc due to its inner passage, make its fluid pressure loss little, and there is the wideband high sound transmission loss of excellence, particularly in high frequency band region, for the acoustic filter of relatively traditional line shape or matrix acoustic filter, i.e. can reach low fluid pressure loss and higher sound transmission loss without the length of acoustic filter is significantly increased, be not take up space, there is energy-efficient excellent characteristics.
2, this dividing plate sound absorbing module place plane within bending denoising device is parallel with the Bending Rotation plane of bending body, and curvature is consistent, the fluid pressure loss bending denoising device is further reduced, on the premise of being not take up exceptional space, have and improve the power-equipment efficiency such as electromotor and blower fan, lifting energy use efficiency, the advantage of reduction energy resource consumption.
3, the internal partition sound absorbing module of this bending denoising device has the effect of reinforcement, can strengthen the intensity of large-scale bending denoising device, it is adaptable to large-scale use occasion.
4, this bending denoising device can be combined by multiple single bending bodys, and combination form is flexible, applied widely.
Accompanying drawing explanation
Fig. 1 is first embodiment of the invention schematic diagram.
Fig. 2 is second embodiment of the invention schematic diagram.
Fig. 3 is third embodiment of the invention schematic diagram.
Fig. 4 is fourth embodiment of the invention schematic diagram.
Fig. 5 is fifth embodiment of the invention schematic diagram.
Wherein, 1, bending body, 1a, angle of bend, 11, sound absorption mould, 2, dividing plate sound absorbing module, 21, solid separator, 22, sound absorption template.
Detailed description of the invention
Below in conjunction with the accompanying drawings and detailed description of the invention the present invention will be further described.
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The invention discloses a kind of bending denoising device, as it is shown in figure 1, this bending denoising device is made up of single bending body 1, 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 any one in circle, polygon, ellipse.As in figure 2 it is shown, in the present embodiment schematic diagram, it is shown that polygonal a kind of embodiment, other embodiments, as oval cross section is similar, repeat no more.
As another embodiment, described bending denoising device, can be formed by several bending body 1 stack combinations, as shown in Figure 3, the present embodiment schematic diagram shows the bending denoising device that a kind of polygon bending 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, a kind of preferred version as above-described embodiment, described bending body 1 be internally provided with dividing plate sound absorbing module 2, described dividing plate sound absorbing module 2 is had the solid separator 21 of sound insulation function by centre and is arranged at the sound absorption template 22 of solid separator 21 both sides and forms.According to actually used occasion, when bending body 1 cross section of inboard wall diameter more than 200mm, bending body 1 is internal to be arranged not less than 1 dividing plate sound absorbing module 2.Described dividing plate sound absorbing module 2 and sound absorbing membrane 11 compact siro spinning technology being positioned at bending body 1 inwall.
As another embodiment, described dividing plate sound absorbing module 2 place plane is parallel with bending body 1 Bending Rotation plane, and 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 made up of metal or nonmetallic materials；Described sound absorption template 22 thickness being arranged at solid separator 21 both sides is 30 ~ 300mm, and sound absorption template 22 is made up of glass fibre or the rock wool material of high acoustic absorption performance.
As it is shown in figure 5, simulate through three-dimensional software, the present embodiment schematic diagram shows the sound transmission loss contrast of this bending denoising device and ordinary straight line style acoustic filter.In figure, top curve is this bending denoising device sound transmission loss under 0 ~ 4000Hz, lower curve is ordinary straight line style acoustic filter sound transmission loss under 0 ~ 4000Hz, can contrast and draw from figure, and this bending denoising device has the sound transmission loss of excellence in high frequency.
Above description is explanation of the invention, is not limitation of the invention, and limited range of the present invention sees claim, and in the case of basic idea of the present invention, the present invention can be to make the amendment of other form.
Claims (8)
1. a bending denoising device, it is characterised in that being made up of single bending body (1) or several bending body (1) superposition, the angle of bend (1a) of described bending body (1) is not less than 60 °.
A kind of bending denoising device the most according to claim 1, it is characterised in that the cross section of described bending body (1) is any one in circle, polygon, ellipse.
A kind of bending denoising device the most according to claim 1, it is characterised in that the inwall of described bending body (1) is provided with sound absorption module (11).
A kind of bending denoising device the most according to claim 1, it is characterized in that, described bending body (1) be internally provided with dividing plate sound absorbing module (2), described dividing plate sound absorbing module (2) is had the solid separator (21) of sound insulation function by centre and is arranged at the sound absorption template (22) of solid separator (21) both sides and forms.
A kind of bending denoising device the most according to claim 4, it is characterised in that when described bending body (1) cross section of inboard wall diameter is more than 200mm, bending body (1) is internal to be arranged not less than 1 dividing plate sound absorbing module (2).
6. according to a kind of bending denoising device described in claim 4 or 5, it is characterised in that described dividing plate sound absorbing module (2) and sound absorption module (11) compact siro spinning technology being positioned at bending body (1) inwall.
7. according to a kind of bending denoising device described in claim 4 or 5, it is characterized in that, described dividing plate sound absorbing module (2) place plane is parallel with bending body (1) Bending Rotation plane, and the bending curvature of dividing plate sound absorbing module (2) is consistent with the bending curvature of bending body (1).
A kind of bending denoising device the most according to claim 4, it is characterised in that the thickness of described solid separator (21) is 0.5 ~ 50mm, described in be arranged at sound absorption template (22) thickness of solid separator (21) both sides be 30 ~ 300mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610383740.7A CN105889690A (en) | 2016-06-01 | 2016-06-01 | Bent noise lowering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610383740.7A CN105889690A (en) | 2016-06-01 | 2016-06-01 | Bent noise lowering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105889690A true CN105889690A (en) | 2016-08-24 |
Family
ID=56709123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610383740.7A Pending CN105889690A (en) | 2016-06-01 | 2016-06-01 | Bent noise lowering device |
Country Status (1)
| Country | Link |
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| CN (1) | CN105889690A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2138271Y (en) * | 1992-07-22 | 1993-07-14 | 李海黎 | Indoor noiseless ventilator |
| US20040099477A1 (en) * | 2000-09-18 | 2004-05-27 | Mats Abom | Sound absorbent |
| RU2247878C2 (en) * | 2003-01-05 | 2005-03-10 | Федеральное государственное унитарное предприятие "Пермский завод "Машиностроитель" (ФГУП ПЗМаш) | Method for manufacture of sound-proofing construction for gas tract |
| CN101636594A (en) * | 2006-10-27 | 2010-01-27 | 空中客车德国有限公司 | Sonic absorption device for an air pipeline of an aircraft, in particular of an air conditioning system of an aircraft |
| CN203068747U (en) * | 2012-12-05 | 2013-07-17 | 周进坤 | Sound attenuation air duct |
| CN104154352A (en) * | 2013-05-14 | 2014-11-19 | 株式会社Jsp | Duct |
| CN205896541U (en) * | 2016-06-01 | 2017-01-18 | 四川五环石化装备有限公司 | Device of making an uproar falls in bending |
-
2016
- 2016-06-01 CN CN201610383740.7A patent/CN105889690A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2138271Y (en) * | 1992-07-22 | 1993-07-14 | 李海黎 | Indoor noiseless ventilator |
| US20040099477A1 (en) * | 2000-09-18 | 2004-05-27 | Mats Abom | Sound absorbent |
| RU2247878C2 (en) * | 2003-01-05 | 2005-03-10 | Федеральное государственное унитарное предприятие "Пермский завод "Машиностроитель" (ФГУП ПЗМаш) | Method for manufacture of sound-proofing construction for gas tract |
| CN101636594A (en) * | 2006-10-27 | 2010-01-27 | 空中客车德国有限公司 | Sonic absorption device for an air pipeline of an aircraft, in particular of an air conditioning system of an aircraft |
| CN203068747U (en) * | 2012-12-05 | 2013-07-17 | 周进坤 | Sound attenuation air duct |
| CN104154352A (en) * | 2013-05-14 | 2014-11-19 | 株式会社Jsp | Duct |
| CN205896541U (en) * | 2016-06-01 | 2017-01-18 | 四川五环石化装备有限公司 | Device of making an uproar falls in bending |
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Application publication date: 20160824 |
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| RJ01 | Rejection of invention patent application after publication |