CN202090995U - Slice-type silencer - Google Patents
Slice-type silencer Download PDFInfo
- Publication number
- CN202090995U CN202090995U CN2011202073282U CN201120207328U CN202090995U CN 202090995 U CN202090995 U CN 202090995U CN 2011202073282 U CN2011202073282 U CN 2011202073282U CN 201120207328 U CN201120207328 U CN 201120207328U CN 202090995 U CN202090995 U CN 202090995U
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- Prior art keywords
- silencer
- strip
- type silencer
- noise
- perforation
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- 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.)
- Expired - Fee Related
Links
- 230000003584 silencer Effects 0.000 title claims abstract description 32
- 239000011358 absorbing material Substances 0.000 claims description 9
- 238000013016 damping Methods 0.000 claims description 3
- 230000030279 gene silencing Effects 0.000 abstract description 11
- 238000010521 absorption reaction Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 abstract 2
- 238000005192 partition Methods 0.000 abstract 1
- 229920000742 Cotton Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
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Abstract
The utility model discloses a slice-type silencer. A silencer slice of the silencer includes a blocking silencing part (2) filled with sound absorption material (1); the silencer slice is provided with a perforation silencing part (3) arranged with the blocking silencing part (2) in parallel or side by side and formed between a partition board (5) and a perforation face plate (4); and the perforation silencing part (3) actually is a resonant cavity. When noise enters the silencer from a windward opening, high-frequency and mid-frequency noise is absorbed by the sound absorption material, and low-frequency noise is absorbed by the resonant cavity, so that the noise reduction of the silencer is achieved, and the noise reduction function of the silencer is improved.
Description
Technical field
The utility model belongs to man-made noise and administers the field, is specifically related to a kind of strip-type silencer.
Background technique
In man-made noise is administered, widely-used strip-type silencer is eliminated air inlet, the exhaust sound of various venting gas appliance, the structure of the strip-type silencer that generally uses is mainly filling porous property sound-absorbing material in the silencing apparatus cavity at present, when noise is propagated in porous sound-absorbing material or sound absorption structure, dissipate because of friction changes into heat energy with acoustic energy, thereby reach the purpose of noise elimination noise reduction.
The sound absorbing capabilities of the strip-type silencer of said structure depends primarily on the performance of porous sound-absorbing material, and sound absorbing capabilities preferably sound-absorbing material nothing more than being exactly glass fibre, this glass fibre has good sound absorbing capabilities to high band noise more than the 315Hz and Mid Frequency noise, and it is relatively poor for the low-frequency range noise sound absorbing capabilities that is lower than 315Hz, and in real productive life, the noise of human influence's maximum normally is lower than the low-frequency range noise of 315Hz, it is not good to overcome strip-type silencer low frequency anti-acoustic capability, is the problem that presses for solution in the man-made noise improvement field always.
The model utility content
At above-mentioned deficiency, the utility model provides a kind of strip-type silencer that can reduce high band noise, Mid Frequency noise and low-frequency range noise simultaneously.
The utility model is to realize by such technological scheme: a kind of strip-type silencer, its anechoic sheet comprises that inside is filled with the resistance noise reduction part of sound-absorbing material, on with respect to the windward side direction, this anechoic sheet is provided with and resistance noise reduction part is arranged in parallel or side by side and by the perforation muffling part that forms between dividing plate and the perforated panel, dividing plate is used for resistance noise reduction part and perforation muffling part are separated, that is the real resonant cavity of this perforation muffling part, for forming between perforated panel and the dividing plate.
For further improving the performance that this strip-type silencer is eliminated the low-frequency range noise, the punching rate of described perforated panel is generally 1～2%, and the aperture is generally less than 1mm.Can carry out precise design as requested, final thickness, punching rate and the aperture of determining described perforated panel, promptly, this perforated panel can also be improved the performance of eliminating the low-frequency range noise deeply by the chamber that is designed to different resonant cavities, aforementioned perforated panel is preferably the micropunch panel, i.e. the less panel in aperture.
The two ends of described anechoic sheet are provided with wind scooper, and the radius of arc R of wind scooper that is positioned at the windward side is greater than the radius of arc r of the wind scooper that is positioned at outlet air surface, thereby in the air channel of silencing apparatus, form the air channel of a gradual change area, further reduce the windage of silencing apparatus.
The dividing plate that is provided with between resistance noise reduction part and the perforation muffling part can adopt metal foil or other material dividing plates.
Further, be bonded with damping plate on the described dividing plate.
The cross section of described strip-type silencer is the gradual change cross section, and promptly anechoic sheet is rendered as a kind of torpedo structure, and the windward side is an orthodrome, and outlet air surface is little circular arc, from the windward side of silencing apparatus to outlet air surface for becoming big structure gradually; Perhaps, the section of anechoic sheet is rendered as diamond structure, and is promptly small in ends, broad in the middle, to reduce windage.
The strip-type silencer that the utility model provides is in its anechoic sheet, be provided with resistance noise reduction part side by side or the perforation muffling part that is arranged in juxtaposition, and this perforation muffling part is real in forming resonant cavity between perforated panel and the dividing plate, therefore, the high band and the Mid Frequency noise that enter the silencing apparatus from the windward side are absorbed by the efficient sound absorption cotton in the resistance noise reduction part, the low-frequency range noise is absorbed by aforementioned resonant cavity, reduce high band noise, Mid Frequency noise and low-frequency range noise simultaneously, overcome the difficult problem that existing strip-type silencer can't reduce the low-frequency range noise; And, the two ends of this chip silencing apparatus are provided with wind scooper, make strip-type silencer be torpedo shape or rhombus by the design to wind scooper, promptly its section is the gradual change shape, thus the windage of effectively reducing, experimental results show that, when flow velocity between sheet was big, this gradually changing cross section can reduce 1/3 with the uniform section windage of traditional strip-type silencer, has good energy-saving effect, whole strip-type silencer is simple in structure, is beneficial at industrial market and applies.
Description of drawings
Fig. 1 is the structural drawing of strip-type silencer among the utility model embodiment 1.
Fig. 2 is the enlarged view of I portion among Fig. 1.
Fig. 3 is the structural drawing of strip-type silencer among the embodiment 2.
Embodiment
In order to be expressly understood the purpose of this utility model, technological scheme and beneficial effect more, below in conjunction with accompanying drawing the utility model is described further, but protection domain of the present utility model is not limited in following examples.
Embodiment 1: as depicted in figs. 1 and 2, a kind of strip-type silencer, its anechoic sheet comprises that inside is filled with the resistance noise reduction part 2 of sound-absorbing material 1, described sound-absorbing material 1 is that efficient sound absorption is cotton, to eliminate high band and Mid Frequency noise, on with respect to the windward side direction, this anechoic sheet is provided with and resistance noise reduction part 2 is arranged in parallel or side by side and by the perforation muffling part 3 that forms between dividing plate 5 and the perforated panel 4, to bore a hole muffling part 3 of dividing plate 5 separates with resistance noise reduction part 2, and this perforation muffling part 3 is the resonant cavity of formation between perforated panel 4 and the dividing plate 5; The two ends of described anechoic sheet are provided with wind scooper 6, and the radius of arc R of wind scooper 6 that is positioned at the windward side is greater than the radius of arc r of the wind scooper 7 that is positioned at outlet air surface; Be bonded with damping plate on the described dividing plate 5; The cross section of described strip-type silencer is the gradual change cross section, to reduce windage.
When noise enters silencing apparatus from the windward side, high band noise wherein and Mid Frequency noise are absorbed by the sound-absorbing material in the resistance noise reduction part 2, and the low-frequency range noise is perforated the resonant cavity absorption that forms between muffling part 3 and the dividing plate 5, thereby reaches the purpose of the noise of absorbing high-frequency section, Mid Frequency and low-frequency range simultaneously.
Embodiment 2: referring to Fig. 3, difference between present embodiment and the embodiment 1 is, on with respect to the windward side direction, resistance noise reduction part 2 is arranged in the two ends of anechoic sheet, promptly be positioned at windward side and outlet air surface, perforation muffling part 3 is positioned at the centre of two resistance noise reduction parts 2, and all the other structures are identical with embodiment 1 with working principle, do not give unnecessary details at this.
The present invention can also be provided with the arrangement mode of resistance noise reduction part and perforation muffling part as required; arrange such as staggered form; this case is given an example with above-mentioned two kinds of arrangement modes; be intended to for understanding technological scheme provided by the invention better, but not with the protection domain restriction not in the above-described embodiments.
Claims (4)
1. strip-type silencer, its anechoic sheet comprises that inside is filled with the resistance noise reduction part (2) of sound-absorbing material (1), it is characterized in that: on respect to the windward side direction, this anechoic sheet is provided with and resistance noise reduction part (2) is arranged in parallel or side by side and by the perforation muffling part (3) that forms between dividing plate (5) and the perforated panel (4).
2. strip-type silencer as claimed in claim 1 is characterized in that: the two ends of described anechoic sheet are provided with wind scooper (6), and the radius of arc R of wind scooper (6) that is positioned at the windward side is greater than the radius of arc r of the wind scooper that is positioned at outlet air surface (7).
3. strip-type silencer as claimed in claim 1 or 2 is characterized in that: described dividing plate is bonded with damping plate on (5).
4. strip-type silencer as claimed in claim 3 is characterized in that: the cross section of described strip-type silencer is the gradual change cross section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202073282U CN202090995U (en) | 2011-06-20 | 2011-06-20 | Slice-type silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202073282U CN202090995U (en) | 2011-06-20 | 2011-06-20 | Slice-type silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202090995U true CN202090995U (en) | 2011-12-28 |
Family
ID=45366068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202073282U Expired - Fee Related CN202090995U (en) | 2011-06-20 | 2011-06-20 | Slice-type silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202090995U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256830A (en) * | 2013-05-27 | 2013-08-21 | 四川正升声学科技有限公司 | Sheet type silencer with adjustable through-flow area |
| CN104008748A (en) * | 2014-05-06 | 2014-08-27 | 北京绿创声学工程设计研究院有限公司 | Shuttle type sheet silencer |
| CN108007231A (en) * | 2017-12-21 | 2018-05-08 | 巴尔的摩冷却系统（苏州）有限公司 | A kind of air outlet micropore plate muffler for crossflow cooling tower |
| CN109488832A (en) * | 2018-12-12 | 2019-03-19 | 华电重工股份有限公司 | A kind of strip-type silencer |
| CN109488833A (en) * | 2018-12-12 | 2019-03-19 | 华电重工股份有限公司 | A kind of strip-type silencer |
| CN112712785A (en) * | 2020-12-29 | 2021-04-27 | 北京航天益森风洞工程技术有限公司 | Silencer suitable for high-speed wind tunnel stable section |
-
2011
- 2011-06-20 CN CN2011202073282U patent/CN202090995U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256830A (en) * | 2013-05-27 | 2013-08-21 | 四川正升声学科技有限公司 | Sheet type silencer with adjustable through-flow area |
| CN103256830B (en) * | 2013-05-27 | 2015-02-04 | 四川正升声学科技有限公司 | Sheet type silencer with adjustable through-flow area |
| CN104008748A (en) * | 2014-05-06 | 2014-08-27 | 北京绿创声学工程设计研究院有限公司 | Shuttle type sheet silencer |
| CN108007231A (en) * | 2017-12-21 | 2018-05-08 | 巴尔的摩冷却系统（苏州）有限公司 | A kind of air outlet micropore plate muffler for crossflow cooling tower |
| CN109488832A (en) * | 2018-12-12 | 2019-03-19 | 华电重工股份有限公司 | A kind of strip-type silencer |
| CN109488833A (en) * | 2018-12-12 | 2019-03-19 | 华电重工股份有限公司 | A kind of strip-type silencer |
| CN109488833B (en) * | 2018-12-12 | 2024-04-23 | 华电重工股份有限公司 | A plate type muffler |
| CN112712785A (en) * | 2020-12-29 | 2021-04-27 | 北京航天益森风洞工程技术有限公司 | Silencer suitable for high-speed wind tunnel stable section |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Wenjiang District 611130 of Sichuan city of Chengdu province Chengdu Strait science and Technology Industry Development Park Haike Road West No. 57 Patentee after: Positive ascension environment Polytron Technologies Inc Address before: 611130, No. 388, Taiwan Avenue, Wenjiang Strait science and Technology Park, Sichuan, Chengdu Patentee before: Sichuan Zhengsheng Acoustic Technology Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20180620 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |