CN103334506A - Wedge absorber - Google Patents
Wedge absorber Download PDFInfo
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- CN103334506A CN103334506A CN2013102706043A CN201310270604A CN103334506A CN 103334506 A CN103334506 A CN 103334506A CN 2013102706043 A CN2013102706043 A CN 2013102706043A CN 201310270604 A CN201310270604 A CN 201310270604A CN 103334506 A CN103334506 A CN 103334506A
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- wedge absorber
- wedge
- sound absorption
- sound
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Abstract
The invention discloses a wedge absorber, which comprises a protecting surface and a sound absorption material filled in the protecting surface, wherein the protecting surface comprises a flexible fiber felt, a metal perforation board and a tripolycyanamide sponge layer. According to the wedge absorber, in comparison with the wedge absorber in the prior art, the wedge absorber has the advantages of high intensity, non-ignitibility, artistic appearance, and capability of greatly reducing reflection of high-frequency voice and ensuring a good acoustics environment.
Description
Technical field
The present invention relates to the acoustic technique field, and be particularly related to a kind of wedge absorber.
Background technology
Sound attenuation room is that acoustics is tested employed specialized laboratory, its be widely used in automobile, Aero-Space, household electrical appliance, computer and communicate by letter, every field such as industrial products, product is carried out noise testing and acoustics feature measurement.In this enclosure space of sound attenuation room, set up free found field, make that the sound wave in this space can infinitely extend to all directions, even the acoustic energy of sound source radiation " freedom " is propagated, both reflections of clear do not have the environment interference of noise yet.In order to reach described sound attenuation room condition, often at the strong sound absorption material of indoor each interface configuration, the sound wave that is incident in the interface is almost absorbed fully in the certain frequency scope, require sound absorption coefficient to be not less than 99% usually.Sound absorption material configuration mode the most commonly used at present is the wedge absorber structure.
Wedge absorber is used transition principle gradually, does porosity (or fibroid) material tapered or the wedgelike sound absorber.Thereby when sound wave during from most advanced and sophisticated incident, because the transition nature gradually of sound absorbing layer, the acoustic impedance of material and the acoustic impedance of air can be mated preferably, sound wave can better be propagated in the sound absorber, and absorbed efficiently.
More existing wedge absorbers by framework, be filled in the sound absorption material in the framework and be coated on the outer armour layer of framework and constitute, shortcoming such as its armour layer often adopts flexible gauze material to make, and it exists intensity low, and fire line is weak.And also have some wedge absorbers to adopt perforated metal panel to replace flexible gauze material to make the mask of wedge absorber, though it has good fireproof, intensity height, advantage such as attractive in appearance, but it has bigger reflex to high-frequency sound, can cause adverse effect to acoustic enviroment.
For this reason, produce the advantage that both has wedge absorber in the prior art, also avoid the wedge absorber of shortcoming of the prior art to become the industry problem demanding prompt solution.
Summary of the invention
The present invention is intended to solve in the prior art, and wedge absorber intensity is low, fire line is weak, to technical problems such as the broken surround fields of sound reflection.
In view of this, the invention provides a kind of wedge absorber, comprise mask and be filled in the interior sound absorption material of mask, it is characterized in that described mask comprises: flexible fiber felt, perforated metal panel and melamine layer.
Further, described melamine spongy layer is Atria poly cyanamid spongy layer.
Further, described melamine spongy layer is arranged at the tip of described wedge absorber.
Further, described sound absorption material is the cotton layer of sound absorption.
In sum, wedge absorber provided by the invention, wedge absorber in the prior art not only has intensity height, non-ignitibility, advantage such as attractive in appearance, and has greatly subdued the reflection to high-frequency sound, has ensured good acoustic enviroment.
Description of drawings
Figure 1 shows that the structural representation of the wedge absorber that one embodiment of the invention provides.
The specific embodiment
In prior art, the wedge absorber that adopts in the anechoic chamber is because the deficiency in the design causes wedge absorber to have technical problems such as intensity is low, poor fire, high-frequency sound reflections affect acoustic enviroment.The present invention is designed to composite construction with the mask of wedge absorber, comprise: flexible fiber felt, perforated metal panel and fire lagging, thereby reached both have the intensity height, non-ignitibility, advantage such as attractive in appearance, and greatly subdued reflection to high-frequency sound, ensured good acoustic enviroment.
For purpose of the present invention, feature are become apparent, below in conjunction with accompanying drawing the specific embodiment of the present invention is further described.
See also Fig. 1, it is depicted as the structural representation of the wedge absorber that one embodiment of the invention provides.
This wedge absorber comprises mask 100 and is filled in the interior sound absorption material 200 of mask that wherein said mask 100 comprises: flexible fiber felt 110, perforated metal panel 120 and melamine layer 130.
Wedge absorber with above-mentioned mask, owing to adopt perforated metal panel 120 as mask, so its intensity height, and owing to be provided with flexible fiber felt 110 at perforated metal panel 120, thereby avoided high-frequency sound directly to propagate on the perforated metal panel 120 and produced the high-frequency sound reflection, in addition, mask is also taked melamine layer 130, makes it have excellent fireproof performance.
In embodiments of the present invention, described melamine spongy layer 130 is Atria poly cyanamid spongy layer.
Further, described melamine spongy layer 130 is arranged at the tip of described wedge absorber.Because the cotton layer of sound absorption is more open, the wedge absorber tip can't be filled closely knit, adopts 130 to be easy to moulding, has remedied this defective.
In embodiments of the present invention, described sound absorption material 200 is the cotton layer of sound absorption.Yet the present invention is not as limit, and those skilled in the art also can adopt other sound absorption materials.
In sum, the wedge absorber that the embodiment of the invention provides, wedge absorber in the prior art not only has intensity height, non-ignitibility, advantage such as attractive in appearance, and has greatly subdued the reflection to high-frequency sound, has guaranteed good acoustic enviroment.
Though the present invention discloses as above with preferred embodiment; so it is not in order to limit the present invention; have in the technical field under any and know the knowledgeable usually; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when looking claims person of defining.
Claims (4)
1. wedge absorber comprises mask and is filled in sound absorption material in the mask, it is characterized in that described mask comprises: flexible fiber felt, perforated metal panel, and melamine spongy layer.
2. wedge absorber according to claim 1 is characterized in that, described melamine spongy layer is Atria poly cyanamid spongy layer.
3. wedge absorber according to claim 1 is characterized in that, described melamine spongy layer is arranged at the tip of described wedge absorber.
4. wedge absorber according to claim 1 is characterized in that, described sound absorption material is the cotton layer of sound absorption.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102706043A CN103334506A (en) | 2013-06-28 | 2013-06-28 | Wedge absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102706043A CN103334506A (en) | 2013-06-28 | 2013-06-28 | Wedge absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103334506A true CN103334506A (en) | 2013-10-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102706043A Pending CN103334506A (en) | 2013-06-28 | 2013-06-28 | Wedge absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103334506A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882138A (en) * | 2015-04-01 | 2015-09-02 | 中国科学院金属研究所 | Sound-absorbing structure of porous foam silicon carbide sound-absorbing material |
| CN105089167A (en) * | 2015-09-02 | 2015-11-25 | 上海声望声学科技股份有限公司 | Novel metal sound absorbing wedge |
| CN114810605A (en) * | 2021-01-22 | 2022-07-29 | 上海海立电器有限公司 | Silencing piece and rotor type compressor comprising same |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201317983Y (en) * | 2008-12-03 | 2009-09-30 | 上海声望声学工程有限公司 | Acoustic-wedge |
| CN201689670U (en) * | 2010-02-12 | 2010-12-29 | 张荣初 | Flame-retardant environment-friendly porous sound-absorbing material component |
| CN101967858A (en) * | 2010-08-30 | 2011-02-09 | 北京科奥克声学技术有限公司 | Wedge absorber of metal orifice plate |
| US20120018247A1 (en) * | 2010-07-20 | 2012-01-26 | Hendrik David Gideonse | Wedge-shaped acoustic diffuser and method of installation |
| CN202401607U (en) * | 2011-12-30 | 2012-08-29 | 上海声望声学工程有限公司 | Sound adsorption wedge |
| CN202420816U (en) * | 2011-12-13 | 2012-09-05 | 中国空气动力研究与发展中心设备设计及测试技术研究所 | Acoustic corner flow deflector |
| CN203846630U (en) * | 2013-06-28 | 2014-09-24 | 上海声望声学工程有限公司 | Sound absorption wedge |
-
2013
- 2013-06-28 CN CN2013102706043A patent/CN103334506A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201317983Y (en) * | 2008-12-03 | 2009-09-30 | 上海声望声学工程有限公司 | Acoustic-wedge |
| CN201689670U (en) * | 2010-02-12 | 2010-12-29 | 张荣初 | Flame-retardant environment-friendly porous sound-absorbing material component |
| US20120018247A1 (en) * | 2010-07-20 | 2012-01-26 | Hendrik David Gideonse | Wedge-shaped acoustic diffuser and method of installation |
| CN101967858A (en) * | 2010-08-30 | 2011-02-09 | 北京科奥克声学技术有限公司 | Wedge absorber of metal orifice plate |
| CN202420816U (en) * | 2011-12-13 | 2012-09-05 | 中国空气动力研究与发展中心设备设计及测试技术研究所 | Acoustic corner flow deflector |
| CN202401607U (en) * | 2011-12-30 | 2012-08-29 | 上海声望声学工程有限公司 | Sound adsorption wedge |
| CN203846630U (en) * | 2013-06-28 | 2014-09-24 | 上海声望声学工程有限公司 | Sound absorption wedge |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882138A (en) * | 2015-04-01 | 2015-09-02 | 中国科学院金属研究所 | Sound-absorbing structure of porous foam silicon carbide sound-absorbing material |
| CN105089167A (en) * | 2015-09-02 | 2015-11-25 | 上海声望声学科技股份有限公司 | Novel metal sound absorbing wedge |
| CN114810605A (en) * | 2021-01-22 | 2022-07-29 | 上海海立电器有限公司 | Silencing piece and rotor type compressor comprising same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 200336, room 607-608, Tian Rui building, 31 Shuangliu Road, Shanghai, Changning District Applicant after: SHANGHAI SWAT ACOUSTICS TECHNOLOGY CO., LTD. Address before: 200335, room 31, 608 Shuangliu Road, Shanghai, Changning District Applicant before: Shanghai Shengwang Acoustics Engineering Co., Ltd. |
|
| COR | Change of bibliographic data | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20131002 |