EP0750777B1 - Film amortisseur de bruit - Google Patents

Film amortisseur de bruit Download PDF

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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
Application number
EP95912132A
Other languages
German (de)
English (en)
Other versions
EP0750777A1 (fr
Inventor
Helmut Fuchs
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Priority to SI9530271T priority Critical patent/SI0750777T1/xx
Publication of EP0750777A1 publication Critical patent/EP0750777A1/fr
Application granted granted Critical
Publication of EP0750777B1 publication Critical patent/EP0750777B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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)

  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. 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.
  6. 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.
  7. 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.
  8. Absorbeur sonore en feuilles selon l'une des revendications 1 à 7,
    caractérisé en ce que
    la feuille extérieure est teintée et/ou imprimée.
  9. 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.
EP95912132A 1994-03-15 1995-03-13 Film amortisseur de bruit Expired - Lifetime EP0750777B1 (fr)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

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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

Cited By (1)

* Cited by examiner, † Cited by third party
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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