CN108665886A - A kind of ultra-thin perforation plate absorbing body of rigidity with resonance sound-absorbing structure - Google Patents
A kind of ultra-thin perforation plate absorbing body of rigidity with resonance sound-absorbing structure Download PDFInfo
- Publication number
- CN108665886A CN108665886A CN201810501164.0A CN201810501164A CN108665886A CN 108665886 A CN108665886 A CN 108665886A CN 201810501164 A CN201810501164 A CN 201810501164A CN 108665886 A CN108665886 A CN 108665886A
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- China
- Prior art keywords
- stepped cavity
- rigidity
- absorbing
- ultra
- sound
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- 239000000463 material Substances 0.000 claims abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000004411 aluminium Substances 0.000 claims abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 3
- 229910052802 copper Inorganic materials 0.000 claims abstract description 3
- 239000010949 copper Substances 0.000 claims abstract description 3
- 229910052742 iron Inorganic materials 0.000 claims abstract description 3
- 239000010959 steel Substances 0.000 claims abstract description 3
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000004080 punching Methods 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 7
- 239000011358 absorbing material Substances 0.000 abstract description 5
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 239000011148 porous material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Building Environments (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention discloses a kind of ultra-thin perforation plate absorbing bodies of rigidity with resonance sound-absorbing structure, characterized in that including perforated plate and backboard bottom liner；For the one side of the perforated plate towards sound source, another side is opposite with backboard bottom liner；Stepped cavity, including the first stepped cavity and the second stepped cavity are provided between the perforated plate and backboard bottom liner；Second stepped cavity is located at the both sides of the first stepped cavity, and the thickness of the second stepped cavity is not more than the thickness of the first stepped cavity；The thickness of the stepped cavity is 0.06mm 0.26mm；The material selection metallic aluminium or iron or steel or copper of the perforated plate and backboard bottom liner.The advantageous effect that the present invention is reached：The ultra-thin perforation plate absorbing body of the rigidity with resonance sound-absorbing structure of the present invention, the problem of not only solving traditional sound-absorbing material environmental pollution and harm to the human body, also solve conventional punch plate sound absorption effect difference and sound sucting band as single-frequency or extremely narrow problem.
Description
Technical field
The present invention relates to a kind of ultra-thin perforation plate absorbing bodies of rigidity with resonance sound-absorbing structure, belong to noise abatement technology
Field.
Background technology
Noise pollution is one of modern times four greatly pollution, body to people and all causes serious harm at heart.According to
1970《Law clinic education》Investigation display noise be the main reason for causing worker at heart with physiological maladies.Cause
This noise abatement problem increasingly causes the common concern of people, how to drop back noise and also becomes the focus of people's research.
Traditional sound-absorbing material mainly has sound-absorbing porous material and resonance sound-absorbing structure two major classes.Porous material includes mainly
Foam and fiber, but this two classes material is unsuitable for the foam and fibre that work under the adverse circumstances such as high temperature and humidity, and tiny
Dimension can also pollute air, do harm to huamn body after falling off.
Resonance sound-absorbing structure is broadly divided into film resonant structure, thin plate resonant structure and conventional punch plate resonant structure.It is thin
Film and thin plate resonant structure normally only have preferable sound absorption effect in frequency range minimum near the resonant frequency, usually only use
Make the noise reduction of specific frequency noise；Conventional punch plate is also to reach sound absorption by resonance, sound sucting band also relative narrower, and
And need to be added sound-absorbing porous material after plate to enhance sound absorbing performance.
Invention content
To solve the deficiencies in the prior art, it is super that the purpose of the present invention is to provide a kind of rigidity with resonance sound-absorbing structure
Thin perforation plate absorbing body solves the problems, such as traditional sound-absorbing material pollution, sound absorption effect difference and single-frequency sound absorption.
In order to realize that above-mentioned target, the present invention adopt the following technical scheme that：
The ultra-thin perforation plate absorbing body of a kind of rigidity with resonance sound-absorbing structure, characterized in that including perforated plate and backboard bottom liner；
For the one side of the perforated plate towards sound source, another side is opposite with backboard bottom liner；It is provided between the perforated plate and backboard bottom liner
Stepped cavity, including the first stepped cavity and the second stepped cavity；Second stepped cavity is located at the two of the first stepped cavity
Side, and the thickness of the second stepped cavity is not more than the thickness of the first stepped cavity；The thickness of the stepped cavity is 0.06mm-
0.26mm；The material selection metallic aluminium or iron or steel or copper of the perforated plate and backboard bottom liner.
A kind of ultra-thin perforation plate absorbing body of rigidity with resonance sound-absorbing structure above-mentioned, characterized in that the perforated plate
With the material selection metallic aluminium of backboard bottom liner.
A kind of ultra-thin perforation plate absorbing body of rigidity with resonance sound-absorbing structure above-mentioned, characterized in that the perforated plate
Using the rigid metal perforated plate of 3mm-7mm thickness, the aperture of perforation is 3mm-6mm, punching rate 10%-22%.
A kind of ultra-thin perforation plate absorbing body of rigidity with resonance sound-absorbing structure above-mentioned, characterized in that the perforated plate
Acoustic impedance with backboard bottom liner is 300 times or more of aeroacoustics impedance, and sound wave impinges perpendicularly on air and backboard bottom at this time
Lining reflected at interfaces coefficient can reach 99.5% or more, you can perforated plate and backboard bottom liner are considered as rigid material.
A kind of ultra-thin perforation plate absorbing body of rigidity with resonance sound-absorbing structure above-mentioned, characterized in that the backboard bottom
Lining uses 1.5mm-4mm rigid metal plates.
The ultra-thin perforation plate absorbing body of a kind of rigidity with resonance sound-absorbing structure above-mentioned, characterized in that the ladder is empty
The distribution of chamber has symmetry.
The ultra-thin perforation plate absorbing body of a kind of rigidity with resonance sound-absorbing structure above-mentioned, characterized in that the ladder is empty
Intracavitary fills air.
A kind of ultra-thin perforation plate absorbing body of rigidity with resonance sound-absorbing structure above-mentioned, characterized in that first rank
The width of terraced cavity accounts for the 6%-75% of entire stepped cavity width.
The advantageous effect that the present invention is reached：1）The ultra-thin perforated plate of the rigidity with resonance sound-absorbing structure of the present invention absorbs
Body, the problem of not only solving traditional sound-absorbing material environmental pollution and harm to the human body, also solve the sound absorption of conventional punch plate
Effect difference and sound sucting band are single-frequency or extremely narrow problem；2）There is no the requirement of Special complex to material in the design of the present invention,
It only needs it relative to air rigidity, and rigid structure is conducive to sustainable recycling, while being not required in cavity
Fill any artificial or natural sound-absorbing material；3）Due to environmental protection, rigidity, good assimilation effect and wideband, dropped eliminating the noise
Grade of making an uproar fields have broad application prospects.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is the structural schematic diagram cross section of the present invention；
Fig. 3 is the absorption coefficient of the invention that preferably aluminium is obtained as material.
Attached drawing meaning explanation：
1- backboard bottom liners, 2- perforated plates, the first stepped cavities of 3-, the second stepped cavities of 4-.
Claims (7)
1. a kind of ultra-thin perforation plate absorbing body of rigidity with resonance sound-absorbing structure, characterized in that including perforated plate and backboard bottom
Lining；For the one side of the perforated plate towards sound source, another side is opposite with backboard bottom liner；It is arranged between the perforated plate and backboard bottom liner
There are stepped cavity, including the first stepped cavity and the second stepped cavity；Second stepped cavity is located at the first stepped cavity
Both sides, and the thickness of the second stepped cavity is not more than the thickness of the first stepped cavity；The thickness of the stepped cavity is 0.06mm-
0.26mm；The material selection metallic aluminium or iron or steel or copper of the perforated plate and backboard bottom liner.
2. the ultra-thin perforation plate absorbing body of a kind of rigidity with resonance sound-absorbing structure according to claim 1, characterized in that
The perforated plate uses the rigid metal perforated plate of 3mm-7mm thickness, and the aperture of perforation is 3mm-6mm, punching rate 10%-22%.
3. the ultra-thin perforation plate absorbing body of a kind of rigidity with resonance sound-absorbing structure according to claim 1, characterized in that
The acoustic impedance of the perforated plate and backboard bottom liner is 300 times or more of aeroacoustics impedance.
4. the ultra-thin perforation plate absorbing body of a kind of rigidity with resonance sound-absorbing structure according to claim 1, characterized in that
The backboard bottom liner uses 1.5mm-4mm rigid metal plates.
5. the ultra-thin perforation plate absorbing body of a kind of rigidity with resonance sound-absorbing structure according to claim 1, characterized in that
The distribution of the stepped cavity has symmetry.
6. the ultra-thin perforation plate absorbing body of a kind of rigidity with resonance sound-absorbing structure according to claim 1, characterized in that
Air is filled in the stepped cavity.
7. the ultra-thin perforation plate absorbing body of a kind of rigidity with resonance sound-absorbing structure according to claim 1, characterized in that
The width of first stepped cavity accounts for the 6%-75% of entire stepped cavity width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810501164.0A CN108665886B (en) | 2018-05-23 | 2018-05-23 | Rigid ultrathin perforated plate absorber with resonance sound absorption structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810501164.0A CN108665886B (en) | 2018-05-23 | 2018-05-23 | Rigid ultrathin perforated plate absorber with resonance sound absorption structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108665886A true CN108665886A (en) | 2018-10-16 |
| CN108665886B CN108665886B (en) | 2024-05-14 |
Family
ID=63777529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810501164.0A Active CN108665886B (en) | 2018-05-23 | 2018-05-23 | Rigid ultrathin perforated plate absorber with resonance sound absorption structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108665886B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111916041A (en) * | 2020-08-13 | 2020-11-10 | 哈尔滨工程大学 | Broadband sound absorption and insulation structure for perforated metamaterial and perforated plate |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002089110A1 (en) * | 2001-04-27 | 2002-11-07 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Silencer |
| WO2005116409A1 (en) * | 2004-05-28 | 2005-12-08 | Silentor Holding A/S | Combination silencer |
| US20120247867A1 (en) * | 2010-01-08 | 2012-10-04 | Jun Yang | Composite sound-absorbing device with built in resonant cavity |
| CN103072589A (en) * | 2011-12-13 | 2013-05-01 | 白国锋 | Micro-perforated plate cavity resonance sound absorption device for high-speed train baggage rack |
| JP2013200426A (en) * | 2012-03-23 | 2013-10-03 | Toshiba Corp | Sound absorption structure and electrical equipment with sound absorption structure |
| CN104700827A (en) * | 2013-12-06 | 2015-06-10 | 香港大学深圳研究院 | Broadband perforated-plate sound-absorbing structure |
| CN204435583U (en) * | 2014-12-11 | 2015-07-01 | 深圳市科德声学技术有限公司 | Two cavity wedge absorber |
| CN205194322U (en) * | 2015-10-30 | 2016-04-27 | 东南大学 | Broadband microperforated panel acoustic absorber based on cycle temper back of body chamber |
| CN105803965A (en) * | 2016-04-28 | 2016-07-27 | 中国铁道科学研究院 | Wideband sound absorption unit plate |
| RU168058U1 (en) * | 2016-02-18 | 2017-01-17 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Петрозаводский государственный университет" | MEASURED FORK-MARKER |
| CN208298546U (en) * | 2018-05-23 | 2018-12-28 | 南京邮电大学 | A kind of ultra-thin perforation plate absorbing body of rigidity with resonance sound-absorbing structure |
-
2018
- 2018-05-23 CN CN201810501164.0A patent/CN108665886B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002089110A1 (en) * | 2001-04-27 | 2002-11-07 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Silencer |
| WO2005116409A1 (en) * | 2004-05-28 | 2005-12-08 | Silentor Holding A/S | Combination silencer |
| US20120247867A1 (en) * | 2010-01-08 | 2012-10-04 | Jun Yang | Composite sound-absorbing device with built in resonant cavity |
| CN103072589A (en) * | 2011-12-13 | 2013-05-01 | 白国锋 | Micro-perforated plate cavity resonance sound absorption device for high-speed train baggage rack |
| JP2013200426A (en) * | 2012-03-23 | 2013-10-03 | Toshiba Corp | Sound absorption structure and electrical equipment with sound absorption structure |
| CN104700827A (en) * | 2013-12-06 | 2015-06-10 | 香港大学深圳研究院 | Broadband perforated-plate sound-absorbing structure |
| CN204435583U (en) * | 2014-12-11 | 2015-07-01 | 深圳市科德声学技术有限公司 | Two cavity wedge absorber |
| CN205194322U (en) * | 2015-10-30 | 2016-04-27 | 东南大学 | Broadband microperforated panel acoustic absorber based on cycle temper back of body chamber |
| RU168058U1 (en) * | 2016-02-18 | 2017-01-17 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Петрозаводский государственный университет" | MEASURED FORK-MARKER |
| CN105803965A (en) * | 2016-04-28 | 2016-07-27 | 中国铁道科学研究院 | Wideband sound absorption unit plate |
| CN208298546U (en) * | 2018-05-23 | 2018-12-28 | 南京邮电大学 | A kind of ultra-thin perforation plate absorbing body of rigidity with resonance sound-absorbing structure |
Non-Patent Citations (2)
| Title |
|---|
| T. A. STARKEY 等: "Thin structured rigid body for acoustic absorption", APPLIED PHYSICS LETTERS, pages 1 - 4 * |
| 苑改红;王宪成;侯培中;: "提高穿孔板吸声性能的实验研究", 天津工程师范学院学报, no. 02, 28 June 2006 (2006-06-28), pages 31 - 33 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111916041A (en) * | 2020-08-13 | 2020-11-10 | 哈尔滨工程大学 | Broadband sound absorption and insulation structure for perforated metamaterial and perforated plate |
| CN111916041B (en) * | 2020-08-13 | 2022-08-02 | 哈尔滨工程大学 | Broadband sound absorption and insulation structure for perforated metamaterial and perforated plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108665886B (en) | 2024-05-14 |
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