EP0750777B1 - Folien-schallabsorber - Google Patents
Folien-schallabsorber 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
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)
- Laminated Bodies (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Accessory Devices And Overall Control Thereof (AREA)
Description
- durch Tiefziehen in den Boden- und Seitenflächen der Folien Platten unterschiedlicher Größe zu schaffen,
- durch Bevorzugung rechteckig langgestreckter anstelle von quadratischen Teilflächen innerhalb einer und derselben Platte eine höhere Zahl von Eigenfrequenzen anregbar zu machen,
- durch vielfache, kleinere und größere Verformungen sowie zusätzliche Masse-Einschlüsse in den tiefgezogenen Folien eine solche Vielfalt der Eigenschwingungen zu ermöglichen, daß praktisch alle interessierenden Frequenzanteile des zu dämpfenden Schallfeldes möglichst vollständig absorbiert werden können.
Claims (9)
- Folien-Schallabsorber, wobei mindestens zwei glatte, ebene, luftundurchlässige Folien (1) mit einem Flächengewicht m" von 0, 05 - 1 kg/m2 mit verschiedenem Abstand (D) zueinander und zu einer schallharten Rückwand (R) angeordnet sind, und der Abstand (D) zwischen den Folien 5 - 100 mm beträgt.
- Folien-Schallabsorber nach Anspruch 1,
dadurch gekennzeichnet,
daß die Folien mit steigendem Flächengewicht m" und etwa in gleichem Maße steigendem Abstand D zur Rückwand angeordnet sind. - Folien-Schallabsorber nach den Ansprüchen 1 - 2,
dadurch gekennzeichnet,
daß die Folien auf Abstandshalterungen oder Rahmen (2) aus Metall, Kunststoff, Verbundwerkstoffen am äußeren Rand befestigt sind. - Folien-Schallabsorber nach den Ansprüchen 1 - 3,
dadurch gekennzeichnet,
daß die freihängende Fläche der Folie etwa 0,1 ... - 1 m2 beträgt. - Folien-Schallabsorber nach den Ansprüchen 1 - 4,
dadurch gekennzeichnet,
daß die Folie aus Kunststoff, Acrylglas, Metall, z.B. Aluminium, oder Verbundwerkstoffen besteht. - Folien-Schallabsorber nach den Ansprüchen 1 - 5,
dadurch gekennzeichnet,
daß die Luftzwischenräume regelmäßig oder unregelmäßig kassettiert sind, wobei die Innenkassetten die schwingende Folie nicht behindern, andererseits aber die Schallausbreitung im Luftzwischenraum unterbinden, und die Wände (3) der Innenkassetten starr und aus dem gleichen oder verschiedenem Material ausgebildet sind. - Folien-Schallabsorber nach den Ansprüchen 1 - 6,
dadurch gekennzeichnet,
daß die äußerste Folie aus wasserundurchlässigem Gewebe, Tuch oder Kunststoffgewebe besteht. - Folien-Schallabsorber nach den Ansprüchen 1 - 7,
dadurch gekennzeichnet,
daß die äußere Folie gefärbt und/oder bedruckt ist. - Folien-Schallabsorber nach den Ansprüchen 1 - 8,
dadurch gekennzeichnet,
daß der Hohlraum, der durch die Folie (1), den Rahmen (2) und die Rückwand R gebildet ist, gasdicht ausgebildet ist.
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 (de) | 1994-03-15 | 1995-03-13 | Folien-schallabsorber |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0750777A1 EP0750777A1 (de) | 1997-01-02 |
EP0750777B1 true EP0750777B1 (de) | 1999-07-28 |
Family
ID=6512853
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95912132A Expired - Lifetime EP0750777B1 (de) | 1994-03-15 | 1995-03-13 | Folien-schallabsorber |
Country Status (8)
Country | Link |
---|---|
US (1) | US5750944A (de) |
EP (1) | EP0750777B1 (de) |
JP (1) | JPH09510303A (de) |
AT (1) | ATE182713T1 (de) |
DE (2) | DE4408782A1 (de) |
ES (1) | ES2135712T3 (de) |
GR (1) | GR3031089T3 (de) |
WO (1) | WO1995025325A1 (de) |
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 | Faist M Gmbh & Co Kg | Einrichtung zum Absorbieren und/oder Dämpfen von Schallwellen |
DE29815723U1 (de) * | 1997-09-04 | 1999-06-10 | Fraunhofer Ges Forschung | Reflexionsarmer Raum für den gesamten Hörbereich |
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 (de) | 1998-08-07 | 2001-01-17 | KAEFER Isoliertechnik GmbH & Co. KG | Schalldämpfungsmittel |
PL201313B1 (pl) | 1999-08-11 | 2009-03-31 | Entwicklungsgesellschaft Fuer | Element osłonowy lub kształtowy dla środków komunikacji |
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 |
JP2011039355A (ja) * | 2009-08-14 | 2011-02-24 | Riken Technos Corp | 吸音体および吸音構造 |
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 |
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 |
AU2015357086A1 (en) * | 2014-12-05 | 2017-06-08 | Eleda S.R.L. | Sound-absorbing element and system |
USD894429S1 (en) | 2018-04-13 | 2020-08-25 | Caimi Brevetti S.P.A. | Sound absorbing panel |
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 |
JP6925082B2 (ja) * | 2018-09-14 | 2021-08-25 | MT−Tec合同会社 | 自動車用吸音材 |
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 |
---|---|---|---|---|
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 |
DE2921050A1 (de) * | 1979-05-23 | 1980-11-27 | Fraunhofer Ges Forschung | Schallabsorbierendes bauelement aus kunststoff-folie |
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, 2300 Kiel, De | |
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 | Gerhardi & Cie Gmbh & Co Kg, 5880 Luedenscheid, De |
-
1994
- 1994-03-15 DE DE4408782A patent/DE4408782A1/de not_active Withdrawn
-
1995
- 1995-03-13 EP EP95912132A patent/EP0750777B1/de not_active Expired - Lifetime
- 1995-03-13 WO PCT/DE1995/000341 patent/WO1995025325A1/de active IP Right Grant
- 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
- 1995-03-13 US US08/704,715 patent/US5750944A/en not_active Expired - Fee Related
- 1995-03-13 JP JP7523775A patent/JPH09510303A/ja active Pending
- 1995-03-13 DE DE59506479T patent/DE59506479D1/de not_active Expired - Fee Related
-
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 |
---|---|
DE59506479D1 (de) | 1999-09-02 |
EP0750777A1 (de) | 1997-01-02 |
GR3031089T3 (en) | 1999-12-31 |
JPH09510303A (ja) | 1997-10-14 |
WO1995025325A1 (de) | 1995-09-21 |
ATE182713T1 (de) | 1999-08-15 |
DE4408782A1 (de) | 1995-09-21 |
US5750944A (en) | 1998-05-12 |
ES2135712T3 (es) | 1999-11-01 |
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