CN201723280U - Straight-pipe resistance muffler - Google Patents
Straight-pipe resistance muffler Download PDFInfo
- Publication number
- CN201723280U CN201723280U CN2010202252822U CN201020225282U CN201723280U CN 201723280 U CN201723280 U CN 201723280U CN 2010202252822 U CN2010202252822 U CN 2010202252822U CN 201020225282 U CN201020225282 U CN 201020225282U CN 201723280 U CN201723280 U CN 201723280U
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- Prior art keywords
- housing
- straight
- absorbent
- sound
- pipe resistance
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Abstract
The utility model relates to a straight-pipe resistance muffler, which comprises a housing adopting a hollow structure, wherein a sound absorption layer is connected to the inner wall of the housing, and the interior of the sound absorption layer is connected with a sound absorption body through a support body; and an inlet is connected to the left end of the housing, and an outlet is connected to the right end of the housing. The straight-pipe resistance muffler has the advantages of simple structure, good muffling effect and small pressure loss.
Description
Technical field:
The utility model relates to a kind of silencing apparatus, particularly a kind of straight tube dissipative muffler.
Background technique:
Silencing apparatus is a kind of a kind of parts that stop sound transmission and allow air communication to cross, be the important measures of eliminating air power noise, silencing apparatus generally is installed on the air-flow path of aerodynamic force equipment or the device of the reduction noise in the inlet and exhaust system, and can stop the propagation of sound wave, allow passing through of air-flow, existing silencing apparatus is the effective tool of control noise.Present existing reactive muffler is that pipe and the chamber by abrupt interface combines, like an acoustic filter well, similar to electrical filter, the cell of each band pipe is a mesh of wave filter, air quality in the pipe is equivalent to inductance and the resistance on the electricity, volume of air in the cell is equivalent to the electric capacity on the electricity, similar with electrical filter, the cell of each band pipe all has the natural frequency of oneself, when the sound wave that includes various frequency contents enters first short tube, only near the sound wave of some frequency first mesh natural frequency could arrive second short tube mouth by mesh, the sound wave of other frequency then can not pass through mesh, can only in cell, come back reflective, make up, just can filter the noise of some frequency content by choosing suitable pipe and chamber, thereby reach the purpose of noise elimination, but this reactive muffler is applicable to the elimination low-frequency noise, in, high frequency noise then effect is relatively poor, influences working environment.
Summary of the invention:
The purpose of this utility model is in order to overcome above deficiency, to provide a kind of simple in structure, and it is effective to eliminate the noise, the straight tube dissipative muffler that volume is little.
The purpose of this utility model is achieved through the following technical solutions: a kind of straight tube dissipative muffler, comprise housing, housing is a hollow-core construction, be connected with absorbent treatment on the inwall of housing, the inside of absorbent treatment is connected with sound absorbent by support, support places between absorbent treatment and the sound absorbent, and the left end of housing is connected with import, and the right-hand member of housing is connected with outlet.
The utility model compared with prior art has the following advantages: absorbent treatment adopts super glass wool, like this when sound wave when being provided with the silencing apparatus of sound-absorbing material, sound wave will excite the vibration of the interior air molecule of countless apertures in the super glass wool, wherein a part of acoustic energy will be used to overcome surface friction drag and viscous force, be converted into heat energy, this silencing apparatus is not only simple in structure, and it is effective to eliminate the noise, and volume is little.
Description of drawings:
Fig. 1 is the sectional view of the utility model structural representation;
Fig. 2 is that the A-A of Fig. 1 is to structural representation;
Number in the figure: 1-housing, 2-absorbent treatment, 3-support, 4-sound absorbent, 5-import, 6-outlet.
Embodiment:
In order to deepen understanding of the present utility model, the utility model is described in further detail below in conjunction with embodiment and accompanying drawing, and this embodiment only is used to explain the utility model, does not constitute the qualification to the utility model protection domain.
Show the embodiment of a kind of straight tube dissipative muffler of the utility model as Fig. 1 and Fig. 2, comprise housing 1, housing 1 is a hollow-core construction, be connected with absorbent treatment 2 on the inwall of housing 1, the inside of absorbent treatment 2 is connected with sound absorbent 4 by support 3, support 3 places between absorbent treatment 2 and the sound absorbent 4, the left end of housing 1 is connected with import 5, and the right-hand member of housing 1 is connected with outlet 6, and described housing 1 is circular or square, absorbent treatment 2 adopts super glass wool, utilize acoustic resistance to eliminate the noise, promptly when sound wave when being provided with the silencing apparatus of sound-absorbing material, sound wave will excite the vibration of air molecule in the countless apertures in the super glass wool, wherein a part of acoustic energy will be used to overcome surface friction drag and viscous force, be converted into heat energy,, and in order to increase low frequency absorption, set up sound absorbent 4, this silencing apparatus is not only simple in structure, and it is effective to eliminate the noise, and volume is little, be used to reduce Roots, leaf formula blower intake and exhaust noise also can be used for the noise elimination of other blower fans.
Claims (1)
1. straight tube dissipative muffler, comprise housing (1), described housing (1) is a hollow-core construction, it is characterized in that: be connected with absorbent treatment (2) on the inwall of described housing (1), the inside of described absorbent treatment (2) is connected with sound absorbent (4) by at least one support (3), described support (3) places between described absorbent treatment (2) and the described sound absorbent (4), and the left end of described housing (1) is connected with import (5), and the right-hand member of described housing (1) is connected with outlet (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202252822U CN201723280U (en) | 2010-06-13 | 2010-06-13 | Straight-pipe resistance muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202252822U CN201723280U (en) | 2010-06-13 | 2010-06-13 | Straight-pipe resistance muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201723280U true CN201723280U (en) | 2011-01-26 |
Family
ID=43491599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202252822U Expired - Fee Related CN201723280U (en) | 2010-06-13 | 2010-06-13 | Straight-pipe resistance muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201723280U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926971A (en) * | 2011-08-10 | 2013-02-13 | 百事德机械（江苏）有限公司 | Novel silencing exhaust groove |
| CN104141610A (en) * | 2013-05-06 | 2014-11-12 | 宁夏嘉翔自控技术有限公司 | Short fan outlet silencer |
| CN108105988A (en) * | 2018-02-23 | 2018-06-01 | 郭绍华 | Silencer of bundling pipe |
| CN108168000A (en) * | 2018-02-23 | 2018-06-15 | 郭绍华 | Thin type purification fresh air fan with air inlet in thin pipeline |
-
2010
- 2010-06-13 CN CN2010202252822U patent/CN201723280U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926971A (en) * | 2011-08-10 | 2013-02-13 | 百事德机械（江苏）有限公司 | Novel silencing exhaust groove |
| CN104141610A (en) * | 2013-05-06 | 2014-11-12 | 宁夏嘉翔自控技术有限公司 | Short fan outlet silencer |
| CN108105988A (en) * | 2018-02-23 | 2018-06-01 | 郭绍华 | Silencer of bundling pipe |
| CN108168000A (en) * | 2018-02-23 | 2018-06-15 | 郭绍华 | Thin type purification fresh air fan with air inlet in thin pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110126 Termination date: 20110613 |