CN104008748B - A kind of shuttle-type strip-type silencer - Google Patents
A kind of shuttle-type strip-type silencer Download PDFInfo
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- CN104008748B CN104008748B CN201410189122.XA CN201410189122A CN104008748B CN 104008748 B CN104008748 B CN 104008748B CN 201410189122 A CN201410189122 A CN 201410189122A CN 104008748 B CN104008748 B CN 104008748B
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- muffling
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Abstract
The present invention relates to a kind of shuttle-type strip-type silencer, it is characterised in that the silencer includes a rectangular housing, and spaced set has some muffling units in the housing, and cross section of each muffling unit along airflow direction is pointed at both ends, middle wide fusiformis.The present invention by the anechoic sheet that conventional muffler cross section is rectangle by being changed to the anechoic sheet that cross section is shuttle-type, manufacture a series of long and narrow ventilating paths similar to Venturi tube, so as in the case where not changing flow area, significantly reduce silencer and enter/resistance the damage of exhaust outlet；Meanwhile the present invention can obtain with the approximate soundproof effect of conventional muffler, solve the problems, such as that traditional strip-type silencer soundproof effect and ventilation effect can not get both to a certain extent.
Description
Technical field
The present invention relates to a kind of noise elimination structure, and in particular to a kind of to take into account acoustic attenuation performance and the shuttle-type piece of aerodynamic quality
Formula silencer.
Background technology
Silencer be it is a kind of can both make air-flow pass through and can effectively to reduce the equipment of noise, or say, silencer
It is a kind of gas channel that noise can be effectively reduced with sound absorption liner or special structure form.As can be seen here, as silencer
Series of products, it is necessary to while provide acoustic attenuation performance and performance of ventilating two indices.Generally, performance of ventilating is called air pertormance
Can, it is one of the important indicator for evaluating Muffler Performance, and the factor that should be taken into full account in muffler desing.Tradition is eliminated the noise
The acoustic attenuation performance of device and aerodynamic quality it is compatible poor, i.e., certainly will will be with loss if to obtain larger sound deadening capacity
Bigger resistance is realized；, certainly will will be to sacrifice bigger acoustic attenuation performance if obtaining less drag losses.And if one
After the very high silencer of individual sound deadening capacity is arranged in ventilating system, because aerodynamic quality is poor, resistance is very big, makes entirely to divulge information
System can not normal operation, then this silencer cannot use.
The content of the invention
In view of the above-mentioned problems, take into account acoustic attenuation performance and the shuttle-type piece of aerodynamic quality it is an object of the invention to provide a kind of
Formula silencer.
To achieve the above object, the present invention takes following technical scheme：A kind of shuttle-type strip-type silencer, it is characterised in that
The silencer includes a rectangular housing, and spaced set has some muffling units, each muffling unit edge in the housing
The cross section of airflow direction is pointed at both ends, middle wide fusiformis.
In a preferred embodiment, the muffling unit includes the perforation protection slab that a cross section is in fusiformis, and institute
State in perforation protection slab and be provided with some supports.
In a preferred embodiment, resistive sound absorption is filled or unfilled with according to particular use inside the muffling unit
Material.
In a preferred embodiment, the resistive sound-absorbing material uses unit weight as 48kg/m3Centrifugally glass-wool.
In a preferred embodiment, the perforation protection slab uses thickness as 0.8mm,Punching rate
For 30% zinc-plated perforated plate, and tiling plain weave alkali-free hydrophobic glass silk cloth on the inside of the perforation protection slab.
In a preferred embodiment, the housing uses galvanized steel plain sheet of the thickness for 1.2mm.
For the present invention due to taking above technical scheme, it has advantages below：The present invention is by transversal by conventional muffler
Face is that the anechoic sheet of rectangle is changed to the anechoic sheet that cross section is shuttle-type (along airflow direction), and manufacture is a series of to be similar to Venturi tube
Long and narrow ventilating path, so as in the case where not changing flow area, significantly reduce silencer and enter/the resistance of exhaust outlet
Damage；Meanwhile the present invention can obtain with the approximate soundproof effect of conventional muffler, solve traditional chip to a certain extent and eliminate the noise
The problem of device soundproof effect can not get both with ventilation effect.
Brief description of the drawings
Come to carry out the present invention detailed description below in conjunction with accompanying drawing.It should be appreciated, however, that accompanying drawing has been provided only more
Understand the present invention well, they should not be interpreted as limitation of the present invention.
Fig. 1 is the structural representation of the present invention；
Fig. 2 is Fig. 1 A-A to sectional view.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1 and Figure 2, the present invention includes a rectangular housing 1, and spaced set has some muffling units 2 in housing 1,
Cross section of each muffling unit 2 along airflow direction is pointed at both ends, middle wide fusiformis.
In a preferred embodiment, muffling unit 2 includes the perforation protection slab 21 that a cross section is in fusiformis, and perforates
Some supports 22 are provided with protection slab 21.
In a preferred embodiment, the inside of muffling unit 2 can be filled or unfilled with resistive sound absorption according to particular use
Material, generally when protection slab 21 of perforating is microwell plate or ultra micro orifice plate, inside need not fill resistive sound-absorbing material, rely primarily on
The resistance acoustically effective of muffling unit 2；And when protection slab 21 of perforating only plays mask effect, inside needs to fill resistive sound absorption material
Material 23.In the present embodiment, resistive sound-absorbing material 23 uses unit weight as 48kg/m3Centrifugally glass-wool.
In a preferred embodiment, perforation protection slab 21 uses thickness as 0.8mm,Punching rate is
30% zinc-plated perforated plate, and the inner side of protection slab 21 tiling plain weave alkali-free hydrophobic glass silk cloth of perforating.
In a preferred embodiment, housing 1 uses galvanized steel plain sheet of the thickness for 1.2mm.
It is the laboratory test results of straight chip type silencer of the invention and traditional below：
The shuttle-type chip sound deadening capacity test result of table one
The traditional straight chip type silencer sound deadening capacity test result of table two
The resistance coefficient of table three contrasts
It can be intuitive to see by above laboratory test results, resistance of the present invention compared to traditional straight chip type silencer
Power reduces 40% or so, but average sound deadening capacity only reduces 1.8dB.As can be seen here, the present invention is not changing the situation of flow area
Under, significantly reduce silencer and enter/the drag losses of exhaust outlet；Meanwhile obtain and approximately eliminated the noise with traditional straight chip type silencer
Effect.
The various embodiments described above are merely to illustrate the present invention, wherein the structure of each part, connected mode and manufacture craft etc. are all
It can be varied from, every equivalents carried out on the basis of technical solution of the present invention and improvement, should not exclude
Outside protection scope of the present invention.
Claims (9)
1. a kind of shuttle-type strip-type silencer, it is characterised in that the silencer includes a rectangular housing, is equidistantly set in the housing
Some muffling units are equipped with, cross section of each muffling unit along airflow direction is pointed at both ends, middle wide fusiformis, adjacent
A long and narrow ventilating path for being similar to Venturi tube is formed between two muffling units.
2. a kind of shuttle-type strip-type silencer as claimed in claim 1, it is characterised in that the muffling unit includes a cross section
In the perforation protection slab of fusiformis, and some supports are provided with the perforation protection slab.
3. a kind of shuttle-type strip-type silencer as claimed in claim 1, it is characterised in that according to specific inside the muffling unit
Purposes is filled or unfilled with resistive sound-absorbing material.
4. a kind of shuttle-type strip-type silencer as claimed in claim 2, it is characterised in that according to specific inside the muffling unit
Purposes is filled or unfilled with resistive sound-absorbing material.
5. a kind of shuttle-type strip-type silencer as described in claim 3 or 4, it is characterised in that the resistive sound-absorbing material uses
Unit weight is 48kg/m3Centrifugally glass-wool.
6. a kind of shuttle-type strip-type silencer as described in claim 2 or 4, it is characterised in that the perforation protection slab is using thick
Spend for 0.8mm, aperturePunching rate be 30% zinc-plated perforated plate, and it is described perforation protection slab on the inside of tiling plain weave without
Alkali hydrophobic glass silk cloth.
7. a kind of shuttle-type strip-type silencer as claimed in claim 1 or 2 or 3 or 4, it is characterised in that the housing is using thick
Spend the galvanized steel plain sheet for 1.2mm.
8. a kind of shuttle-type strip-type silencer as claimed in claim 5, it is characterised in that the housing uses thickness as 1.2mm
Galvanized steel plain sheet.
9. a kind of shuttle-type strip-type silencer as claimed in claim 6, it is characterised in that the housing uses thickness as 1.2mm
Galvanized steel plain sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410189122.XA CN104008748B (en) | 2014-05-06 | 2014-05-06 | A kind of shuttle-type strip-type silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410189122.XA CN104008748B (en) | 2014-05-06 | 2014-05-06 | A kind of shuttle-type strip-type silencer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104008748A CN104008748A (en) | 2014-08-27 |
| CN104008748B true CN104008748B (en) | 2017-12-26 |
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ID=51369376
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410189122.XA Active CN104008748B (en) | 2014-05-06 | 2014-05-06 | A kind of shuttle-type strip-type silencer |
Country Status (1)
| Country | Link |
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| CN (1) | CN104008748B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488833B (en) * | 2018-12-12 | 2024-04-23 | 华电重工股份有限公司 | Sheet type muffler |
| CN110595052B (en) * | 2019-09-20 | 2022-03-18 | 宁波源海博创科技有限公司 | Silencer with adjustable and excellent performance adapting to air inlet parameters |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1584976A (en) * | 2003-08-18 | 2005-02-23 | 上海电力设计院有限公司 | Anti-noise laminated material and louvers therefrom |
| CN202090995U (en) * | 2011-06-20 | 2011-12-28 | 四川正升声学科技有限公司 | Slice-type silencer |
| CN102522079B (en) * | 2012-01-10 | 2014-06-11 | 厦门嘉达环保建造工程有限公司 | Impedance compound right-angled muffler |
| CN102629739A (en) * | 2012-04-10 | 2012-08-08 | 上海交通大学 | Thin noise reduction structure capable of naturally ventilating for indoor substation |
| CN202746297U (en) * | 2012-06-29 | 2013-02-20 | 无锡杰尔压缩机有限公司 | Sound elimination structure of fan filtering sound eliminator |
| CN102829650A (en) * | 2012-07-20 | 2012-12-19 | 浙江东发环保工程有限公司 | Sound eliminating and noise lowering device of large-sized natural ventilation cooling tower in thermal power plant |
| CN203232692U (en) * | 2013-05-23 | 2013-10-09 | 龙泉市砩矿有限责任公司 | Sound absorption and insulation cover |
| CN103471418B (en) * | 2013-09-23 | 2015-04-29 | 北京中亚康源环保工程有限公司 | Noise control device for air outlet of large machine ventilation cooling tower |
| CN103471419A (en) * | 2013-09-23 | 2013-12-25 | 北京中亚康源环保工程有限公司 | Directional exhaust noise attenuation system of large machine ventilation cooling tower |
| CN103471420B (en) * | 2013-09-23 | 2015-03-18 | 北京中亚康源环保工程有限公司 | Noise control device for air inlet of large machine ventilation cooling tower |
| CN203532197U (en) * | 2013-10-15 | 2014-04-09 | 上海市安装工程集团有限公司 | Sound elimination plate of resistive plate type sound eliminator |
| CN204087782U (en) * | 2014-05-06 | 2015-01-07 | 北京绿创声学工程设计研究院有限公司 | Shuttle-type strip-type silencer |
-
2014
- 2014-05-06 CN CN201410189122.XA patent/CN104008748B/en active Active
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| Publication number | Publication date |
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| CN104008748A (en) | 2014-08-27 |
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