CN101967858A - Wedge absorber of metal orifice plate - Google Patents
Wedge absorber of metal orifice plate Download PDFInfo
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- CN101967858A CN101967858A CN2010102662696A CN201010266269A CN101967858A CN 101967858 A CN101967858 A CN 101967858A CN 2010102662696 A CN2010102662696 A CN 2010102662696A CN 201010266269 A CN201010266269 A CN 201010266269A CN 101967858 A CN101967858 A CN 101967858A
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- perforated plate
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Abstract
The invention relates to a wedge absorber of a metal orifice plate for building an anechoic chamber with a free sound field, which is widely applied to researching and measuring products such as automobiles and parts, mobiles and communication products, home appliances and audio devices and the like and further used for scientific research of the voice and language system. The surface layer of the wedge absorber is a metal orifice plate filled with sound-absorbing materials and coated by an acoustically transparent cloth layer. The bottom panel, end panel and wedge-shaped panel of the surface layer are connected with each other by welding, riveting or seaming. Wedge pothooks are fixed on peripheral edges of the bottom panel and hanged in a wall chute on the wall space. The invention is free from keel, light, firm in appearance, nondeformable, convenient to install, easy to disassemble and more environmental-friendly, does not overflow fiber and has the advantages of good acoustical characteristic, color matching and easy cleaning.
Description
Technical field
The present invention relates to a kind of wedge absorber, especially a kind of metal perforated plate surface layer wedge absorber that is used for sound attenuation room.
Background technology
Wedge absorber is a main member of building sound attenuation room.Sound attenuation room is a room with free found field, and free found field is a kind of approximate sound field of having only the sound source direct sound and not having the obstruction reflected sound and be not subjected to the outdoor environment influence of noise.The length difference of wedge absorber can obtain different cut-off frequency, and the long more cut-off frequency of the length of wedge absorber is just low more, and the architectural space that is used to build sound attenuation room is also just big more.The different of wedge absorber surface material and internal construction can obtain different visions and result of use, also influence the efficient of producing and installing simultaneously.Sound attenuation room is widely used in fields such as vehicle complete vehicle and component, communication product, audio-visual equipment, household electrical appliance, power equipment, electronic instrument, language analysis as the acoustical laboratory of acoustics or electroacoustic measurement and experiment.
The wedge absorber that generally uses at present is the glass wool wedge, promptly do skeleton with steel wire, cotton or other sound absorption material of inner filling glass, the outer glass wool cloth that coats, surface materials such as plastic window screening or textile cloth, this is a kind of traditional wedge absorber way, characteristics are to make by hand easily, material cost and processing cost are low, and shortcoming is the external surface out-of-flatness, dull coloring, waterproof and anti-dust performance are poor, easy cleaning not, application life is short, installation difficulty is big, do not re-assembly fast after quick detachable, can not industrialized mass production, large-scale wedge easy deformation and internal glass fibers are excessive easily.
Though have flat and the surperficial sound absorber of wedge metal comes out, different because of its internal structure and surface configuration, its physical characteristic and acoustic characteristic are also different.With wedge metal surface wedge absorber, owing to be subjected to the frame construction restriction, not only complex structure, appearance are not attractive in appearance, form is heavy, cost is high, installation is inconvenient, and also the acoustical behavior to the sound attenuation room special frequency channel has certain influence.
Summary of the invention
The metal perforated plate wedge absorber that the purpose of this invention is to provide a kind of rational in infrastructure, in light weight, specious, long service life, easy for installation, specious and suitable industrialized mass production.
The technical solution used in the present invention is: a kind of metal perforated plate wedge absorber, comprise surface layer and sound absorption material, and surface layer is coated on the external surface of sound absorption material.Also comprise wedge hook and wall chute, described surface layer is constituted by metal perforated plate and by bottom panel, end plates and wedge panel, bottom panel be shaped as square or rectangle, the bottom of end plates and top are respectively rectangle and taper, wedge panel is that middle mind-set both sides bend and form with the drift angle limit, its underpart and top are respectively rectangle and taper, and wedge panel is extended with crimp and fixedlys connected with end plates at side, and wedge panel is fixedlyed connected with bottom panel on the base respectively with end plates; The hook of many row's wedges is fixed on the dual-side of base plate, and the wall chute of corresponding row's number with the wedge hook is fixed on the metope, and the metal perforated plate wedge absorber is articulated on the wall chute by the wedge hook.
Between wedge panel and the end plates, wedge panel and end plates are respectively welding, riveted joint or seaming with fixedly connected mode between the bottom panel and are connected.
The wall chute is made of C type shape.
Coat or be bonded with the entrant sound layer of cloth between surface layer and the sound absorption material.
Advantage of the present invention is:
1, rational in infrastructure, light weight: form because the wedge panel of relative accounting area maximum is bent by whole punched steel plate, bottom panel, end plates and wedge panel all are extended with flange, and connected mode each other is staking, welding or snap-in, make the globality of wedge absorber strong, firm in structure, do not need internal steel keel or framework, so weigh light, technology are simple and make the precision height.
2, easy for installation, quick detachable: owing to, be convenient to the large tracts of land Fast Installation of wedge absorber, and improved installation quality having adopted the rational metal of structure that rack and metal installation suspension member are installed.
3, specious, be convenient to clean: because the perforated metal panel surface layer made by the equipment unification, its finished product not only uniform specification, line angle is clearly demarcated, shape is strong, and makes the surfacing of different colours easily, realizes collocation of colour.Also after falling dust is arranged or after using for many years, carry out dust suction, scouring or spray color again easily.
4, antipollution, more environmental protection: owing to adopt the metal perforated plate surface layer, pitch-row is even, quality is hard, is subjected to the protection of entrant sound layer of cloth again, and the internal glass fibers sound absorption material is difficult for excessive, and the steel surfacing also has more fireproof performance than surface layers such as glass wool cloths.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the two sharp wedge absorber wedge panel figure of the present invention.
Fig. 3 is the two sharp wedge absorber end plates figure of the present invention.
Fig. 4 is the two sharp wedge absorber bottom panel figure of the present invention.
Fig. 5 is a wall chute structural representation of the present invention.
Fig. 6 is a surface layer inner surface fixed support element structure schematic diagram of the present invention.
Fig. 7 is the vertical and staggered scheme of installation of horizontal direction for wedge absorber of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is done to describe in further detail.
As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, a kind of metal perforated plate wedge absorber comprises surface layer and sound absorption material 1, and surface layer is coated on the external surface of sound absorption material, also comprises wedge hook 2 and wall chute 3.Surface layer is constituted by metal perforated plate and by bottom panel 4, end plates 5 and wedge panel 6, bottom panel 4 be shaped as square or rectangle, the bottom of end plates 5 and top are respectively rectangle and taper, wedge panel 6 is that middle mind-set both sides bend and form with the drift angle limit, its underpart and top are respectively rectangle and taper, wedge panel is extended with crimp and fixedlys connected with end plates at side, and wedge panel is fixedlyed connected with bottom panel on the base respectively with end plates.Coat or be bonded with entrant sound layer of cloth 7 between surface layer and the sound absorption material 1.Between wedge panel 6 and the end plates 5, wedge panel 6 and end plates 5 are respectively welding, riveted joint or seaming with fixedly connected mode between the bottom panel 4 and are connected.The perforated percentage of metal perforated plate is 20%-45%, and the aperture of metal perforated plate is 2-6mm.
The length and the base portion cavity sum of wedge absorber commonly used are equivalent to 1/4 of cut-off frequency wavelength.The length of wedge is divided into tip (wedge portion) length and base portion (wedge block) length, the tip of wedge is long more, its cut-off frequency is low more, the base portion of wedge absorber is to having very big absorption less than the following low frequency of 200Hz, can leave certain cavity between wedge absorber base portion and the metope, be used to adjust resonance frequency, improve low frequency characteristic and fixed installation suspension member.For example, the length of 120Hz cut-off frequency wedge absorber and base portion cavity sum are about 700mm, and the length of 50Hz cut-off frequency wedge absorber and base portion cavity sum are about 1700mm.The floor space of wedge absorber commonly used is 400*400mm, 600*600mm or 800*800mm, and requiring of its length and corresponding cut-off frequency is corresponding, and wedge absorber can be two points, unicuspid or tricuspid, can also be abnormal shape.
For example, making cut-off frequency is the two sharp wedge absorbers of metal perforated plate of 120Hz cut-off frequency, and its external dimensions is 400*400*650 (H) mm, the long 100mm of base portion, by the long 550mm in tip that base portion extends, bottom cavity is 50mm, and wedge absorber length and base portion cavity sum are 700mm.When the production blanking, select the punched steel plate of area for use greater than 400*400mm, perforated percentage is 23%, steel plate thickness 0.8mm, the aperture is 0.25mm, four limits are done inside flange and are handled and form bottom panel 4; Select the punched steel plate of area greater than 400*1300mm for use, fold the plane acute angle from alignment both sides, center, the 550mm strong point folds the obtuse angle, plane on the distance pinnacle, and two long limits and two minor faces are done inside flange respectively and handled and form wedge panel 6; Select the punched steel plate of the wide 200mm in base, the long 100mm of base portion, tip long 550 for use, the base is done inside flange and is handled and form end plates 5, through to staking, seaming or the welding of a square bottom surface plate, four end plates and two wedge panel, in process, fill the environmental protection super glass wool again and coat entrant sound layer of cloth 7 and form a complete two sharp wedge absorber in end face, bottom surface.Wherein the entrant sound layer of cloth is a glass wool cloth, can change or increase other anti-overflow, moisture-proof film layer when needing.Because interconnecting between each surface of above-mentioned wedge absorber is reasonable, steel plate is thinner, makes that weight is light and it is easy to make.
As Fig. 3, Fig. 4, Fig. 5, shown in Figure 7, many row's wedges hook 2 is fixed on the dual-side of base plate, the wall chute 3 of corresponding row's number with the wedge hook is fixed on the metope, and the metal perforated plate wedge absorber is articulated on the wall chute by the wedge hook, and wall chute 3 is made of C type shape.For attractive in appearance and satisfy acoustic characteristic, wedge absorber can be according to the broken line on pinnacle parallel or vertical interlaced be fixed on the metope.When making the wedge absorber that vertically mounts, divide upper and lower two rows fixing totally 4 wedge hooks 2 with the limit of fixedlying connected of wedge panel in bottom panel; When the wedge absorber that production technique mounts, divide upper and lower two rows fixing totally 4 wedge hooks 2 with the limit of fixedlying connected between the end plates in bottom panel; Consider vertical and that level is installed is universal, each wedge can fix above-mentioned two kinds totally 8 wedges link up with.When mounting wedge absorber, the wall chute 3 that elder generation is made of C type shape in the wall horizontal fixed, can be public between adjacent two row's wedge absorbers row's wall chute, two row's wedge hooks with each wedge absorber back side slip into respectively in the corresponding wall chute again, and the back side of wedge absorber and metope keep the spacing of 50mm altogether.
When end wedge absorber area, because its volume is big, weight is heavier, can be divided into two unicuspid wedges with two wedges and makes during greater than 800mm more than or equal to 600*600mm, length, by connector two unicuspid wedges are merged into a two sharp wedge again.Accordingly, the quantity of wedge hook and wall chute also suitably increases, and is fixed on the firm degree of sound attenuation room wall and end face to guarantee wedge absorber.
As shown in Figure 6, the inner surface of bottom panel 4 is fixed with supporting member 8.For the bigger wedge absorber of volume, because its deadweight is heavier, can be as required at the inner surface fixed L type or the C type supporting member of wedge absorber, this supporting member can connect into frame construction, makes it firm in structure and not sagging for a long time.
According to the needs of metope area and moulding, the metal perforated plate wedge absorber can be made as unicuspid, two point or tricuspid wedge, can also be made as special-shaped wedge.
The part wedge absorber can be sprayed into different colors, to reach specious effect.
Because the present invention is rational in infrastructure, easy for installation and make easily, suitable low-cost batch process the in batches can obtain after the installation that profile is strong, line angle is clearly demarcated and robust effect, has simultaneously than glass wool cloth or the better acoustic characteristic of window screening cloth cover.
Claims (10)
1. metal perforated plate wedge absorber, comprise surface layer and sound absorption material (1), surface layer is coated on the external surface of sound absorption material, it is characterized in that: also comprise wedge hook (2) and wall chute (3), described surface layer is a metal perforated plate and by bottom panel (4), end plates (5) and wedge panel (6) constitute, bottom panel (4) be shaped as square or rectangle, the bottom and the top of end plates (5) are respectively rectangle and taper, wedge panel (6) is that middle mind-set both sides bend and form with the drift angle limit, its underpart and top are respectively rectangle and taper, wedge panel is extended with crimp and fixedlys connected with end plates at side, and wedge panel is fixedlyed connected with bottom panel on the base respectively with end plates; Many row's wedge hooks (2) are fixed on the dual-side of base plate, and the wall chute (3) of corresponding row's number with the wedge hook is fixed on the metope, and the metal perforated plate wedge absorber is articulated on the wall chute by the wedge hook.
2. metal perforated plate wedge absorber according to claim 1 is characterized in that: between wedge panel (6) and the end plates (5), wedge panel and end plates are respectively welding, riveted joint or seaming with fixedly connected mode between the bottom panel (4) and are connected.
3. metal perforated plate wedge absorber according to claim 1 is characterized in that: described wall chute (3) is made of C type shape.
4. metal perforated plate wedge absorber according to claim 1 is characterized in that: coat or be bonded with entrant sound layer of cloth (7) between described surface layer and the sound absorption material (1).
5. metal perforated plate wedge absorber according to claim 1 is characterized in that: the perforated percentage of described metal perforated plate is 20%-45%.
6. metal perforated plate wedge absorber according to claim 1 is characterized in that: the feature perforated percentage of described metal perforated plate is 23%.
7. metal perforated plate wedge absorber according to claim 1 is characterized in that: the aperture of described metal perforated plate is 2-6mm.
8. metal perforated plate wedge absorber according to claim 1 is characterized in that: the characteristic aperture of described metal perforated plate is 2.5mm.
9. metal perforated plate wedge absorber according to claim 1 is characterized in that: the inner surface of described bottom panel (4) is fixed with supporting member (8).
10. metal perforated plate wedge absorber according to claim 1 is characterized in that: described metal perforated plate wedge absorber is unicuspid, two point or tricuspid wedge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102662696A CN101967858A (en) | 2010-08-30 | 2010-08-30 | Wedge absorber of metal orifice plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102662696A CN101967858A (en) | 2010-08-30 | 2010-08-30 | Wedge absorber of metal orifice plate |
Publications (1)
| Publication Number | Publication Date |
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| CN101967858A true CN101967858A (en) | 2011-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102662696A Pending CN101967858A (en) | 2010-08-30 | 2010-08-30 | Wedge absorber of metal orifice plate |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102864846A (en) * | 2012-09-04 | 2013-01-09 | 北京科奥克声学技术有限公司 | Metal sound insulation low-frequency acoustical board |
| CN103334506A (en) * | 2013-06-28 | 2013-10-02 | 上海声望声学工程有限公司 | Wedge absorber |
| CN103452199A (en) * | 2013-09-13 | 2013-12-18 | 苏州岸肯电子科技有限公司 | Sound-absorbing wedge |
| CN103469909A (en) * | 2013-08-14 | 2013-12-25 | 苏州岸肯电子科技有限公司 | Sound-absorbing wedge |
| CN104464710A (en) * | 2014-11-21 | 2015-03-25 | 南京航空航天大学 | Acoustic sandwich panel |
| CN104998964A (en) * | 2015-06-19 | 2015-10-28 | 江苏英思达科技有限公司 | Manufacturing method for metal noise reduction wedge |
| CN105155704A (en) * | 2015-06-19 | 2015-12-16 | 江苏英思达科技有限公司 | Double-layer metal wedge and manufacturing method thereof |
| CN107119811A (en) * | 2017-06-09 | 2017-09-01 | 苏州岸肯电子科技有限公司 | High acoustic absorptivity sound absorption wedge |
| CN107217749A (en) * | 2017-07-24 | 2017-09-29 | 苏州岸肯电子科技有限公司 | A kind of wedge absorber of adjustable cavity height |
| CN111719722A (en) * | 2020-07-20 | 2020-09-29 | 上海泛德声学工程有限公司 | Suspension structure |
| CN111809754A (en) * | 2020-07-20 | 2020-10-23 | 上海泛德声学工程有限公司 | Manufacturing method of sound-absorbing wedge perforated metal plate shell |
| 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 |
| CN115288592A (en) * | 2022-06-28 | 2022-11-04 | 成都建筑材料工业设计研究院有限公司 | Building window screen with noise reduction function and manufacturing method thereof |
-
2010
- 2010-08-30 CN CN2010102662696A patent/CN101967858A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102864846A (en) * | 2012-09-04 | 2013-01-09 | 北京科奥克声学技术有限公司 | Metal sound insulation low-frequency acoustical board |
| CN103334506A (en) * | 2013-06-28 | 2013-10-02 | 上海声望声学工程有限公司 | Wedge absorber |
| CN103469909A (en) * | 2013-08-14 | 2013-12-25 | 苏州岸肯电子科技有限公司 | Sound-absorbing wedge |
| CN103452199A (en) * | 2013-09-13 | 2013-12-18 | 苏州岸肯电子科技有限公司 | Sound-absorbing wedge |
| CN104464710A (en) * | 2014-11-21 | 2015-03-25 | 南京航空航天大学 | Acoustic sandwich panel |
| CN105155704B (en) * | 2015-06-19 | 2018-05-29 | 江苏英思达科技有限公司 | A kind of double-level-metal wedge and preparation method thereof |
| CN104998964A (en) * | 2015-06-19 | 2015-10-28 | 江苏英思达科技有限公司 | Manufacturing method for metal noise reduction wedge |
| CN105155704A (en) * | 2015-06-19 | 2015-12-16 | 江苏英思达科技有限公司 | Double-layer metal wedge and manufacturing method thereof |
| CN104998964B (en) * | 2015-06-19 | 2017-07-04 | 江苏英思达科技有限公司 | A kind of preparation method of metal noise reduction wedge |
| CN107119811A (en) * | 2017-06-09 | 2017-09-01 | 苏州岸肯电子科技有限公司 | High acoustic absorptivity sound absorption wedge |
| CN107217749A (en) * | 2017-07-24 | 2017-09-29 | 苏州岸肯电子科技有限公司 | A kind of wedge absorber of adjustable cavity height |
| CN111719722A (en) * | 2020-07-20 | 2020-09-29 | 上海泛德声学工程有限公司 | Suspension structure |
| CN111809754A (en) * | 2020-07-20 | 2020-10-23 | 上海泛德声学工程有限公司 | Manufacturing method of sound-absorbing wedge perforated metal plate shell |
| 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 |
| CN114810605B (en) * | 2021-01-22 | 2025-02-11 | 上海海立电器有限公司 | Silencer and rotor compressor including the same |
| CN115288592A (en) * | 2022-06-28 | 2022-11-04 | 成都建筑材料工业设计研究院有限公司 | Building window screen with noise reduction function and manufacturing method thereof |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20110209 |