EP0750777B1 - Film amortisseur de bruit - Google Patents
Film amortisseur de bruit Download PDFInfo
- Publication number
- EP0750777B1 EP0750777B1 EP95912132A EP95912132A EP0750777B1 EP 0750777 B1 EP0750777 B1 EP 0750777B1 EP 95912132 A EP95912132 A EP 95912132A EP 95912132 A EP95912132 A EP 95912132A EP 0750777 B1 EP0750777 B1 EP 0750777B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- foil
- sound absorber
- absorber according
- foils
- sound
- Prior art date
- 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 - Lifetime
Links
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 55
- 239000011888 foil Substances 0.000 title claims abstract description 41
- 239000000463 material Substances 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 2
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 230000000630 rising effect Effects 0.000 claims 1
- 239000002759 woven fabric Substances 0.000 claims 1
- 239000010408 film Substances 0.000 description 33
- 238000005452 bending Methods 0.000 description 5
- 238000013016 damping Methods 0.000 description 4
- 239000002985 plastic film Substances 0.000 description 4
- 229920006255 plastic film Polymers 0.000 description 4
- 239000004800 polyvinyl chloride Substances 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 229920000915 polyvinyl chloride Polymers 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000002557 mineral fiber Substances 0.000 description 2
- 230000003584 silencer Effects 0.000 description 2
- 241001136792 Alle Species 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000009304 pastoral farming Methods 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000004936 stimulating effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
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
- G10K11/162—Selection of materials
- G10K11/168—Plural layers of different materials, e.g. sandwiches
Definitions
- PVC has in common with many other plastics that it - even when used indoors - is not permanently UV-resistant and therefore discolored can occur.
- the market is reacting for reasons of environmental protection reluctant to all PVC products today. In some countries the use is of PVC in large quantities in buildings also for fire protection reasons prohibited.
- the object of the invention is therefore to provide a film absorber that is simple is easy to manufacture. According to the invention, this is done by the film absorber solved according to claim 1. Advantageous configurations are in the Subclaims marked.
- the film absorber according to the invention avoids the cup-shaped formations whole and only consists of several (preferably: 3) completely flat foils, the front a reverberant rear wall (e.g. a very heavy component) in a row (preferably: all arranged parallel to each other and to the wall).
- the slides can from any material, e.g. Plastic or metal. Your transverse dimensions are largely, e.g. freely selectable according to the respective installation case. According to Figure 2, their acoustic properties are essentially determined by their basis weights m "and distances D to each other and to the wall.
- the shape and design of the between the foils and the Cavities formed on the wall and the type of fastening of the foils on spacers or frame for attaching the absorbers to the rear wall only subordinate acoustic role. Since the absorber according to the invention its effectiveness is not essentially due to the internal damping in the film material by stimulating bending deformations at kinks, edges and supports and also hardly from the friction between contact surfaces or from the friction vibrating air particles on fine fibers or in narrow pores he was previously not possible in terms of material selection and shape Adaptation of the acoustic design to the respective application. Here if it is designed for the same sound spectrum, it requires approximately the same depth and approximately the same basis weight as the known film absorbers.
- the film absorber according to the invention according to Figure 2 is similar to that according to DE 27 58 041, DE 29 21 050 or DE 32 33 654, a complex resonance system. With its low resistance, similar to the conventional film absorber (cf. Fuchs, H.V .; Ackermann, U .; Frommhold, W .: Development by non-porous absorbers for technical sound insulation. Building Physics 11 (1989), Pp. 28-36) enables it with a relatively small number of resonance mechanisms (Preferred: 3) unexpected broadband activity.
- Figure 3 shows the simplest example of a single film Resonance system an important principle of optimization of the absorber according to the invention.
- the film should be used for broadband attenuation at high frequencies have the smallest possible basis weight m "and not approximately (with a larger one m ”) prefer a correspondingly smaller distance
- Absorbing frequencies optimally should not just be the basis weight be enlarged, but at the same time the thickness D of the air cushion. So you can achieve that the simplest single-shell construction for low frequencies with needs significantly less depth than a homogeneous porous or fibrous absorber.
- Foil absorbers by attaching foil 1 in front of foil 2 in Figure 4 shifts the part of the damping curve that falls to low frequencies by 1 - 2 thirds.
- Figure 5 shows a calculation result for three foils of the same weight with a total depth of 100 mm.
- the comparison with measurements in the so-called impedance tube with a cross section of 200 x 200 mm 2 shows very good agreement up to the measuring limit of 1200 Hz ( Figure 6).
- the deficiency of the flat film absorber can be solved by a simple cassette the large air cushions in the hall and in larger rooms make up for the generally dominant oblique sound.
- a simple cassette the large air cushions in the hall and in larger rooms make up for the generally dominant oblique sound.
- the air gaps according to Figure 10 with a regular (e.g. honeycomb-shaped) or irregular (e.g. consisting of crumpled foils) Subdivide the grid structure in such a way that partial spaces of size less cm arise.
- the cassette can be made from partitions Plastic or metal are used, but the foils should not be the inner cassette touch or do not lie on. You can on the side edges of the film absorber be hung or fastened yourself.
- Such optimization at high Frequencies is e.g.
- the film absorbers according to the invention can be staggered in series arranged mass / spring systems consisting of thin foils with air gaps make almost any broadband absorbent, in particular then, if one (seen in the direction of sound incidence) basis weights m "of the foils increases and the distances D between them to the wall also increased.
- the cavity resonator through the film 1, the side frame 2 or spacers and the rear wall R is formed is advantageous designed to be gastight.
- the film absorber according to the invention can be acoustically broadband design and manufacture significantly cheaper and because of the closed Make the surface easier to maintain.
- Metals or composites can also be very robust and design a broadband absorber for technical soundproofing, the whole without sensitive fibrous or porous materials.
- the flat, completely flat and smooth design of the film absorber according to the invention offers significant advantages in terms of deposits and cleaning.
- the film absorber according to the invention - similar to silencers made of homogeneous mineral wool - elementary as desired and in modular construction, preferred together with the reverberant rear wall as a sound absorbing component Manufacture with the required rigidity in freely selectable dimensions.
- Another embodiment e.g. for swimming pools, can be as facing the room first film, get a waterproof, thin cloth.
- a special one resistant variant can also be the first film to use new, extremely tear-resistant, use thin plastic fabric.
- the film absorber according to the invention offers a variety not previously known for sound absorbers, which is used accommodates in room acoustics.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Building Environments (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Laminated Bodies (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Accessory Devices And Overall Control Thereof (AREA)
Claims (9)
- Absorbeur sonore en feuilles comportant au moins deux feuilles (1), lisses, planes, imperméables ayant une densité de surface (m") comprise entre 0,05 et 1 kg/m2, avec une distance (D) différente et une paroi arrière dure (R) vis-à-vis du son, la distance (D) entre les feuilles étant comprise entre 5 et 100 mm.
- Absorbeur sonore en feuilles selon la revendication 1,
caractérisé en ce que
les feuilles sont disposées avec une densité de surface (m") croissante et une masse croissant sensiblement de la même mesure, à la distance (D) par rapport à la paroi arrière. - Absorbeur sonore en feuilles selon les revendications 1 et 2,
caractérisé en ce que
les feuilles sont fixées sur des supports d'écartement ou des châssis (2) en métal, en matière plastique, en matière composite, au niveau du bord extérieur. - Absorbeur sonore en feuilles selon les revendications 1 à 3,
caractérisé en ce que
la surface libre de la feuille représente entre environ 0,1 et 1 m2. - Absorbeur sonore en feuilles selon les revendications 1 à 4,
caractérisé en ce que
la feuille est en matière plastique, en verre acrylique, en métal comme par exemple de l'aluminium ou en matière composite. - Absorbeur sonore en feuilles selon les revendications 1 à 5,
caractérisé en ce que
les espaces intermédiaires d'air sont en forme de caissons réguliers ou irréguliers, les caissons internes ne gênant pas la feuille oscillante et, par ailleurs, interdisent le développement du son dans l'espace intermédiaire d'air, les parois (3) des caissons internes étant rigides et sont réalisées dans des matériaux identiques ou différents. - Absorbeur sonore en feuilles selon l'une des revendications 1 à 6,
caractérisé en ce que
la feuille extérieure est un tissu, une toile ou un tissu de matière synthétique, imperméable à l'eau. - Absorbeur sonore en feuilles selon l'une des revendications 1 à 7,
caractérisé en ce que
la feuille extérieure est teintée et/ou imprimée. - Absorbeur sonore en feuilles selon l'une des revendications 1 à 8,
caractérisé en ce que
la cavité délimitée par la feuille (1), le châssis (2) et la paroi arrière (R) est étanche aux gaz.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI9530271T SI0750777T1 (en) | 1994-03-15 | 1995-03-13 | Foil sound absorber |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4408782A DE4408782A1 (de) | 1994-03-15 | 1994-03-15 | Folien-Schallabsorber |
DE4408782 | 1994-03-15 | ||
PCT/DE1995/000341 WO1995025325A1 (fr) | 1994-03-15 | 1995-03-13 | Film amortisseur de bruit |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0750777A1 EP0750777A1 (fr) | 1997-01-02 |
EP0750777B1 true EP0750777B1 (fr) | 1999-07-28 |
Family
ID=6512853
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95912132A Expired - Lifetime EP0750777B1 (fr) | 1994-03-15 | 1995-03-13 | Film amortisseur de bruit |
Country Status (8)
Country | Link |
---|---|
US (1) | US5750944A (fr) |
EP (1) | EP0750777B1 (fr) |
JP (1) | JPH09510303A (fr) |
AT (1) | ATE182713T1 (fr) |
DE (2) | DE4408782A1 (fr) |
ES (1) | ES2135712T3 (fr) |
GR (1) | GR3031089T3 (fr) |
WO (1) | WO1995025325A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005002621B3 (de) * | 2005-01-20 | 2006-06-14 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Hermetisch abgeschlossenes Modul zur Schalldämpfung |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19626676A1 (de) * | 1996-07-03 | 1998-01-08 | Kaefer Isoliertechnik | Vorrichtung zur Verminderung von Schallpegeln in Gebäuden |
DE29617845U1 (de) * | 1996-10-14 | 1998-02-12 | M. Faist GmbH & Co. KG, 86381 Krumbach | Einrichtung zum Absorbieren und/oder Dämpfen von Schallwellen |
DE29815712U1 (de) * | 1997-09-04 | 1999-04-01 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eV, 80636 München | Schallabsorber |
DE19750102A1 (de) | 1997-11-12 | 1999-06-02 | Stankiewicz Gmbh | Gasdurchströmte Leitung mit Schallabsorptionswirkung |
DE19754107C1 (de) | 1997-12-05 | 1999-02-25 | Fraunhofer Ges Forschung | Schallabsorber |
DE19901607C2 (de) * | 1998-08-07 | 2001-03-08 | Kaefer Isoliertechnik | Schalldämpfungsmittel |
EP0978600A3 (fr) | 1998-08-07 | 2001-01-17 | KAEFER Isoliertechnik GmbH & Co. KG | Dispositif atténuateur de bruits |
JP2003507753A (ja) * | 1999-08-11 | 2003-02-25 | エイチピー−ケミー ペルザー リサーチ アンド ディベロップメント リミテッド | 広い周波数範囲にわたって高い吸収効果を有する構成部品 |
DE19944474C2 (de) * | 1999-09-16 | 2001-10-31 | Infineon Technologies Ag | Abschirmung äußerer Anregungen bei der Vermessung schwingungsfähiger Halbleitermembranen |
DE10037001B4 (de) * | 2000-07-29 | 2004-06-09 | Carl Heinz Niemeyer | Schalldämpfungselement für Strömungsmittel |
JP4050632B2 (ja) * | 2003-02-24 | 2008-02-20 | 株式会社神戸製鋼所 | 吸音構造体 |
JP2004264374A (ja) * | 2003-02-24 | 2004-09-24 | Kobe Steel Ltd | 薄膜を用いた吸音構造 |
JP2010085818A (ja) * | 2008-10-01 | 2010-04-15 | Inoac Corp | 吸音材 |
JP5632595B2 (ja) * | 2009-08-14 | 2014-11-26 | リケンテクノス株式会社 | 吸音体および吸音構造 |
JP2011039357A (ja) * | 2009-08-14 | 2011-02-24 | Riken Technos Corp | 吸音体および吸音構造 |
JP2011039355A (ja) * | 2009-08-14 | 2011-02-24 | Riken Technos Corp | 吸音体および吸音構造 |
FR2970009B1 (fr) * | 2010-12-30 | 2021-06-11 | Normalu | Ensemble acoustiquement absorbant |
CN102820029B (zh) * | 2012-08-24 | 2014-06-18 | 广州市泰力高复合材料有限公司 | 一种消音结构 |
US20160075108A1 (en) * | 2013-05-08 | 2016-03-17 | Hervey Tremblay | Acoustic insulating panel |
US10508453B2 (en) * | 2014-12-05 | 2019-12-17 | Eleda S.R.L. | Sound-absorbing element and system |
USD895159S1 (en) | 2018-04-13 | 2020-09-01 | Caimi Brevetti S.P.A. | Sound absorbing panel |
USD895158S1 (en) | 2018-04-13 | 2020-09-01 | Caimi Brevetti S.P.A. | Sound absorbing panel |
USD894429S1 (en) | 2018-04-13 | 2020-08-25 | Caimi Brevetti S.P.A. | Sound absorbing panel |
WO2020054050A1 (fr) * | 2018-09-14 | 2020-03-19 | MT-Tec合同会社 | Matériau d'absorption sonore automobile |
DE102021114238A1 (de) | 2021-06-01 | 2022-12-01 | Allgaier Werke Gmbh | Schallabsorber für industrielle Maschinen |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2921050A1 (de) * | 1979-05-23 | 1980-11-27 | Fraunhofer Ges Forschung | Schallabsorbierendes bauelement aus kunststoff-folie |
DE2758041C2 (de) * | 1977-12-24 | 1985-10-31 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München | Verwendung eines aus mindestens zwei übereinander angeordneten Folien, insbesondere Kunststoffolien, bestehenden Bauelements |
DE3032269A1 (de) * | 1980-08-27 | 1982-04-08 | Hoechst Ag, 6000 Frankfurt | Resonatorschallabsorptionselement |
DE3233654C2 (de) * | 1982-09-10 | 1986-01-16 | Ewald Dörken AG, 5804 Herdecke | Schallabsorbierendes Bauelement |
DE3404208A1 (de) * | 1984-02-07 | 1985-08-08 | Siemens AG, 1000 Berlin und 8000 München | Magnetplattenspeicher mit in einem federnd ausgebildeten gehaeuse beidseitig gelagerten plattenstapel |
DE3408411A1 (de) * | 1984-03-08 | 1985-09-19 | Rütgerswerke AG, 6000 Frankfurt | Selbstklebendes entdroehnungselement |
US4607466A (en) * | 1984-05-29 | 1986-08-26 | Allred John C | Method and apparatus for controlling reverberation of sound in enclosed environments |
DE3504208A1 (de) * | 1985-02-07 | 1986-08-07 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München | Schalldaempfer-box |
US4832147A (en) * | 1987-06-19 | 1989-05-23 | E. I. Dupont De Nemours And Company | Sound reduction membrane |
FR2640068B1 (fr) * | 1988-12-07 | 1991-01-25 | Cnim | Procede de fabrication de structures composites pour l'absorption du bruit et structures composites obtenues par ledit procede |
DE8903942U1 (de) * | 1989-03-31 | 1989-05-24 | HDW-Isoliertechnik GmbH, 24149 Kiel | Isolierstoffplatte |
DE4123509C2 (de) * | 1991-07-16 | 1993-10-07 | Continental Ag | Elastische Entdröhnbelagsbahn für Wände von schallabgebenden Gehäusen und seine Verwendung |
DE9301234U1 (de) * | 1992-02-20 | 1993-03-18 | Lydall Gerhardi GmbH & Co.KG, 58511 Lüdenscheid | Wärme- und Schallisolationsformteil |
-
1994
- 1994-03-15 DE DE4408782A patent/DE4408782A1/de not_active Withdrawn
-
1995
- 1995-03-13 WO PCT/DE1995/000341 patent/WO1995025325A1/fr active IP Right Grant
- 1995-03-13 DE DE59506479T patent/DE59506479D1/de not_active Expired - Fee Related
- 1995-03-13 JP JP7523775A patent/JPH09510303A/ja active Pending
- 1995-03-13 EP EP95912132A patent/EP0750777B1/fr not_active Expired - Lifetime
- 1995-03-13 US US08/704,715 patent/US5750944A/en not_active Expired - Fee Related
- 1995-03-13 ES ES95912132T patent/ES2135712T3/es not_active Expired - Lifetime
- 1995-03-13 AT AT95912132T patent/ATE182713T1/de not_active IP Right Cessation
-
1999
- 1999-08-26 GR GR990402172T patent/GR3031089T3/el unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005002621B3 (de) * | 2005-01-20 | 2006-06-14 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Hermetisch abgeschlossenes Modul zur Schalldämpfung |
Also Published As
Publication number | Publication date |
---|---|
WO1995025325A1 (fr) | 1995-09-21 |
DE4408782A1 (de) | 1995-09-21 |
JPH09510303A (ja) | 1997-10-14 |
DE59506479D1 (de) | 1999-09-02 |
ES2135712T3 (es) | 1999-11-01 |
US5750944A (en) | 1998-05-12 |
ATE182713T1 (de) | 1999-08-15 |
EP0750777A1 (fr) | 1997-01-02 |
GR3031089T3 (en) | 1999-12-31 |
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