CN104637478A - Silencing elbow - Google Patents
Silencing elbow Download PDFInfo
- Publication number
- CN104637478A CN104637478A CN201310547427.9A CN201310547427A CN104637478A CN 104637478 A CN104637478 A CN 104637478A CN 201310547427 A CN201310547427 A CN 201310547427A CN 104637478 A CN104637478 A CN 104637478A
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- CN
- China
- Prior art keywords
- right angle
- leading
- angle body
- disposed
- pipe body
- 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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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention relates to a silencing elbow. The silencing elbow comprises a right-angle pipe body which has a leading-in part, a corner part and a leading-out part. A sound-absorbing material layer is disposed on an inner wall of the right-angle pipe body. A first micro-pore plate is disposed in the leading-in part of the right-angle pipe body. A second micro-pore plate is disposed in the leading-out part of the right-angle pipe body. Multiple pieces of wind deflection vanes are disposed in the corner part of the right-angle pipe body. The silencing elbow reduces the impact force of airflows through the first micro-pore plate and the second micro-pore plate and plays a role of a resistive plate, and then through the multiple pieces of wind deflection vanes disposed in the core part, prevents mutual collision of airflows, and transforms acoustic energy into heat energy.
Description
Technical field
The present invention relates to a kind of bend muffler.
Background technology
Bend muffler is the elbow of liner acoustic absorbant, has remarkable attenuation to sound wave.Acoustic attenuation is made up of three parts: nearly axial wave is in the absorption of bend wall and reflection, and the energy of nearly axial wave changes the energy of oblique wave into and effectively absorbed by acoustic absorbant when turning round.
Existing sound suppressor is generally divided into dissipative muffler and reactive muffler.Dissipative muffler is the sound absorption utilizing deadener or sound absorption structure, and the noise along pipe transmmision is decayed with distance, thus reaches noise elimination object, this kind of sound suppressor has good soundproof effect to high frequency noise, and low frequency acoustic attenuation performance is poor.Reactive muffler connects resonant cavity by means of the unexpected expansion (or shrink) of pipeline section or side, the sound wave of some frequency along pipe transmmision reflected back to Sounnd source direction in sudden change place, thus reaches noise elimination object.It compares and is applicable to eliminate Low Medium Frequency noise, and poor to the noise elimination effect of high frequency noise.
No matter be dissipative muffler or reactive muffler, if meet high velocity air, noise elimination function just becomes and does not stabilize very much.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the deficiencies in the prior art, provides a kind of bend muffler, is conducive to improving soundproof effect, makes noise elimination more stable.
The technical solution adopted for the present invention to solve the technical problems is: a kind of bend muffler, comprise right angle body, right angle body has introduction part, corner portion and leading-out portion, the inwall of described right angle body is provided with sound-absorbing material layer, the first microwell plate is provided with in the introduction part of right angle body, be provided with the second microwell plate in the leading-out portion of right angle body, in the corner portion of right angle body, be provided with multi-disc guide vane.
Further, described sound-absorbing material layer is glass fabric layer and super glass wool layer, described glass fabric layer parcel super glass wool layer.
The invention has the beneficial effects as follows: the impulsive force being reduced air-flow by the first microwell plate and the second microwell plate, play resistive plate, then by being arranged on the multi-disc guide vane in corner portion, avoiding mutually colliding between air-flow, converting acoustic energy to heat energy.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described.
Fig. 1 is structural representation of the present invention;
Wherein: 1, right angle body, 2, sound-absorbing material layer, the 3, first microwell plate, the 4, second microwell plate, 5, fair water fin.
Embodiment
The present invention is further illustrated by reference to the accompanying drawings now.The schematic diagram that these accompanying drawings are simplification only illustrates basic structure of the present invention in a schematic way, and therefore it only shows the formation relevant with the present invention.
As shown in Figure 1, a kind of bend muffler, comprise right angle body 1, right angle body 1 has introduction part, corner portion and leading-out portion, the inwall of right angle body 1 is provided with sound-absorbing material layer 2, be provided with the first microwell plate 3 in the introduction part of right angle body 1, be provided with the second microwell plate 4 in the leading-out portion of right angle body 1, in the corner portion of right angle body 1, be provided with multi-disc guide vane.Sound-absorbing material layer 2 is glass fabric layer and super glass wool layer, glass fabric layer parcel super glass wool layer.Glass cloth and super glass wool are the material that market can have been bought, and draw materials also more convenient.
Noise air-flow is after entering right angle body 1, noise reduction process is carried out through acoustic absorbant, the sound wave incident two pieces of microwell plates produced, due to the adhesive tape resistance of air, the vibration friction of air and hole wall, make quite a few acoustic energy change into heat energy and be absorbed, sound wave can be avoided mutually colliding between air-flow through fair water fin 5 through the first microwell plate 3 after, avoids converting acoustic energy to heat energy.By arrange microwell plate and fair water fin 5 improve erasure effect.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on instructions, must determine its technical scope according to right.
Claims (2)
1. a bend muffler, it is characterized in that: comprise right angle body, right angle body has introduction part, corner portion and leading-out portion, the inwall of described right angle body is provided with sound-absorbing material layer, the first microwell plate is provided with in the introduction part of right angle body, be provided with the second microwell plate in the leading-out portion of right angle body, in the corner portion of right angle body, be provided with multi-disc guide vane.
2. a kind of bend muffler according to claim 1, is characterized in that: described sound-absorbing material layer is glass fabric layer and super glass wool layer, described glass fabric layer parcel super glass wool layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310547427.9A CN104637478A (en) | 2013-11-07 | 2013-11-07 | Silencing elbow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310547427.9A CN104637478A (en) | 2013-11-07 | 2013-11-07 | Silencing elbow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104637478A true CN104637478A (en) | 2015-05-20 |
Family
ID=53216149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310547427.9A Pending CN104637478A (en) | 2013-11-07 | 2013-11-07 | Silencing elbow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104637478A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109686353A (en) * | 2019-01-17 | 2019-04-26 | 苏州迈麦精密科技有限公司 | A kind of acoustic damping of toneable |
| CN111928689A (en) * | 2020-07-23 | 2020-11-13 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Printed circuit board type heat exchanger with noise elimination function |
-
2013
- 2013-11-07 CN CN201310547427.9A patent/CN104637478A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109686353A (en) * | 2019-01-17 | 2019-04-26 | 苏州迈麦精密科技有限公司 | A kind of acoustic damping of toneable |
| CN111928689A (en) * | 2020-07-23 | 2020-11-13 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Printed circuit board type heat exchanger with noise elimination function |
| CN111928689B (en) * | 2020-07-23 | 2021-12-03 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Printed circuit board type heat exchanger with noise elimination function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150520 |