EP0236810B1 - Construction pour l'atténuation du son par absorption - Google Patents

Construction pour l'atténuation du son par absorption Download PDF

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Publication number
EP0236810B1
EP0236810B1 EP87102341A EP87102341A EP0236810B1 EP 0236810 B1 EP0236810 B1 EP 0236810B1 EP 87102341 A EP87102341 A EP 87102341A EP 87102341 A EP87102341 A EP 87102341A EP 0236810 B1 EP0236810 B1 EP 0236810B1
Authority
EP
European Patent Office
Prior art keywords
film
absorption
damping structure
damping
supporting structure
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
EP87102341A
Other languages
German (de)
English (en)
Other versions
EP0236810A3 (en
EP0236810A2 (fr
Inventor
Reinhard Dipl.-Phys. Raackow
Alois Strasser
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.)
DIPL.-ING. WREDE & NIEDECKEN VERWALTUNG GMBH
Original Assignee
Dipl-Ing Wrede & Niedecken Verwaltung GmbH
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6294675&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0236810(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Dipl-Ing Wrede & Niedecken Verwaltung GmbH filed Critical Dipl-Ing Wrede & Niedecken Verwaltung GmbH
Priority to AT87102341T priority Critical patent/ATE95935T1/de
Publication of EP0236810A2 publication Critical patent/EP0236810A2/fr
Publication of EP0236810A3 publication Critical patent/EP0236810A3/de
Application granted granted Critical
Publication of EP0236810B1 publication Critical patent/EP0236810B1/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

Definitions

  • the invention relates to an absorption silencer backdrop.
  • Such absorption silencers are suitable for the damping of sound waves in flowing gases containing moisture dust, which tends to stick.
  • an absorption silencer backdrop which has an absorption plate held by a backdrop frame, the absorption material being coated with a binder in order to stabilize the fibers on the surface of the absorption material.
  • the AU-A-407 054 also shows an absorption silencer backdrop.
  • a thin material such as a film, is applied directly to the surface of the absorption material.
  • the object of the present invention is to dampen the sound waves in a moist and dusty flowing gas in a wide frequency range, the associated Absorption muffler backdrop should also be used in moist gases that tend to stick to dust, without the effectiveness of the muffler being reduced due to the deposits of dust particles.
  • the absorption silencer backdrop is described by the features of claim 1.
  • the absorption silencer backdrop according to the invention comprises, as is customary in the case of such backdrops, a backdrop frame which can consist, for example, of metal, such as steel or aluminum, or of plastic.
  • a backdrop frame which can consist, for example, of metal, such as steel or aluminum, or of plastic.
  • the usual precautions can be taken on the link frame (profile frame), which facilitate the assembly and sealing of the silencer link at the place of action; it can contain, for example, bores with or without threads, mounting brackets, rails, seals, such as, for example, rubber-elastic or spring-elastic sealing lips.
  • the absorption material which usually consists of rock, mineral or glass wool, is located within the backdrop frame; other absorption materials are conceivable, but mostly less inexpensive. The absorption material is held down by a support structure without being firmly connected to it.
  • a film is firmly connected to the support structure.
  • This film can be glued to the support structure.
  • the laminating film and the support structure can also consist of one piece; the laminating film can be provided with a support structure during the manufacturing process, for example with ribs and the like.
  • the support structure should not only hold down the absorbent material, it also has the task of the lamination film with the it is firmly connected to give sufficient support, for example to prevent destruction by excessive fluttering of the film at high flow velocities of the gas in which the sound waves are to be damped.
  • the support structure can consist of the same material as the laminating film, but it can also consist of one or more other materials. Examples of usable materials are metals and their alloys, such as. As aluminum, aluminum alloy such as duralumin and steels, and their mixtures.
  • the support structure can for example have the shape of a perforated plate, a grid or one or more strips or ribs. The support structure should only cover a small proportion of the inner surface of the film. If it is not provided with a support structure during its manufacturing process, the laminating film can, for example, be glued, welded or sintered onto the support structure.
  • the laminating film In order to achieve good sound absorption, the laminating film must be largely transparent to the sound waves to be damped.
  • the laminating film can be a thin metal film, but it can also consist of plastic, for example polyethylene, PVC or PTFE.
  • plastic for example polyethylene, PVC or PTFE.
  • the film is essentially smooth on the gas side in order not to promote the agglomeration of sticky particles on its surface. In the same sense, bumps on the gas side, such as screw or rivet heads resting on the film, should be avoided. So that the sound waves can penetrate the absorption material largely unhindered, the film is only firmly connected to the support structure with a small part of its surface facing away from the gas side.
  • the Foil coated on the gas side or chemically or physically modified for example to increase their corrosion resistance or their liability-repellent effect.
  • FIGS. 1a, b A special embodiment of the device according to the invention is outlined in FIGS. 1a, b.
  • the film 1 is an approximately 50 ⁇ m thick PTFE film.
  • the film is attached to a 3 mm thick perforated plate 2 made of PVC using a silicone adhesive.
  • the absorption silencer backdrop has the outer dimensions 1000 mm x 1000 mm.
  • Each of the two perforated plates has 52 circular openings 5 of 118 mm in diameter.
  • the absorption material 4 consists of mineral wool, the backdrop frame 3 made of aluminum.
  • the perforated plates are connected to the backdrop frame by rivets (Fig.1a), the joints are sealed with sealing compound.
  • the insertion loss of silencers (cf. VDI 2567) with the described scenes corresponds to the insertion loss of silencers with scenes, the absorption material of which is covered with a similar film, but is held on the outside by a grille.
  • the backdrop described was used for 2 1/2 years in humid air containing PVC dust or the like. Flow rate operated. There was no significant dust deposit on the backdrop. The insertion loss did not change.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Building Environments (AREA)
  • Laminated Bodies (AREA)
  • Exhaust Silencers (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)

Claims (8)

  1. Dispositif amortisseur de bruit par absorption, comportant un matériau d'absorption (4) maintenu par un cadre (3), faisant le pourtour et recouvert par une construction support (2) et une feuille (1) sur les surfaces qui ne sont pas maintenues par le cadre du dispositif (3), présentant les caractéristiques suivantes :
    1.1 - La construction support (2) est reliée au cadre du dispositif (3) et disposée de telle façon qu'elle maintient en place le matériau d'absorption (4), sans lui être ainsi rigidement reliée,
    1.2 - sur la face de la construction support (2) sur laquelle, après montage du dispositif amortisseur de bruit par absorption, se trouve le lieu d'action d'un gaz en écoulement, la feuille (1) est reliée rigidement à la construction support (2),
    1.3 - la construction support (2) est configurée de telle façon qu'elle ne recouvre qu'une petite partie de la surface intérieure de la feuille (1),
    1.4 - la face extérieure de la feuille (1) est lisse.
  2. Dispositif amortisseur de bruit par absorption selon la revendication 1, dont la construction support (2) est constituée par une plaque pourvue d'orifices.
  3. Dispositif amortisseur de bruit par absorption selon la revendication 1 ou 2, dans lequel la construction support (2) se présente sous la forme d'une plaque perforée ou d'une grille, ou se présente sous la forme de bandes ou de nervures.
  4. Dispositif amortisseur de bruit par absorption selon l'une des revendications 1 à 3, dans lequel la feuille (1) et la construction support (2) sont fabriquées d'une seule pièce.
  5. Dispositif amortisseur de bruit par absorption selon l'une des revendications 1 à 4, dans lequel le cadre de coulisse (3) est en acier, aluminium ou matière synthétique.
  6. Dispositif amortisseur de bruit par absorption selon l'une des revendications 1 à 5, dans lequel la feuille (1) est collée ou soudée sur la construction support (2).
  7. Dispositif amortisseur de bruit par absorption selon l'une des revendications 1 à 6, dans lequel la feuille (1) est une feuille métallique mince ou une feuille en matière synthétique.
  8. Dispositif amortisseur de bruit par absorption selon l'une des revendications 1 à 7, dans lequel la feuille (1) est pourvue d' un revêtement, côté gaz.
EP87102341A 1986-02-21 1987-02-19 Construction pour l'atténuation du son par absorption Expired - Lifetime EP0236810B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87102341T ATE95935T1 (de) 1986-02-21 1987-02-19 Absorptionsschalldaempferkulisse.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3605684 1986-02-21
DE3605684A DE3605684C2 (de) 1986-02-21 1986-02-21 Absorptionsschalldämpferkulisse

Publications (3)

Publication Number Publication Date
EP0236810A2 EP0236810A2 (fr) 1987-09-16
EP0236810A3 EP0236810A3 (en) 1988-01-27
EP0236810B1 true EP0236810B1 (fr) 1993-10-13

Family

ID=6294675

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87102341A Expired - Lifetime EP0236810B1 (fr) 1986-02-21 1987-02-19 Construction pour l'atténuation du son par absorption

Country Status (3)

Country Link
EP (1) EP0236810B1 (fr)
AT (1) ATE95935T1 (fr)
DE (2) DE3605684C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10122617C1 (de) * 2001-05-10 2002-06-20 Lta Lufttechnische Komponenten Schalldämpferkulisse für Anlagen der Lüftungstechnik

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0531698B1 (fr) * 1991-09-12 1998-09-02 Luwa Aktiengesellschaft Ecran amortisseur de son
AUPO910697A0 (en) * 1997-09-11 1997-10-02 Hrl Technology Pty Ltd Improved sound attenuating device
DE102009034463A1 (de) 2009-07-22 2011-02-03 Filtro Klimatechnik Gmbh Schalldämpfungskörper
GB2621015A (en) * 2023-06-06 2024-01-31 Pineapple Contracts Unlimited Wall panel

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2630056A1 (de) * 1975-07-30 1977-02-17 Industrial Acoustics Co Schalldaempfer
FR2420080A1 (fr) * 1978-03-14 1979-10-12 Ciat Sa Perfectionnements aux dispositifs d'amortissement phonique notamment pour canalisations d'air ou autre gaz
CH640074A5 (en) * 1978-11-09 1983-12-15 Keller Alfred Sound-absorbing body and method for the manufacture thereof
DE8303575U1 (de) * 1983-02-09 1983-06-09 Gerb-Akustik Consult GmbH, 4300 Essen Vorrichtung zur daempfung der geraeusche in kuehltuermenund grossgeblaesen.
US4553631A (en) * 1983-05-19 1985-11-19 United Mcgill Corporation Sound absorption method and apparatus

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Merkblatt "Relaxationsschalldämpfer-Elemente Typ F" vom 05.04.1980, Firma G+H Montage, D-6700 Ludwigshafen *
Merkblatt "Relaxationsschalldämpfer-Elemente Typ R" vom 06.11.1980, Firma G+H Montage, D-6700 Ludwigshafen *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10122617C1 (de) * 2001-05-10 2002-06-20 Lta Lufttechnische Komponenten Schalldämpferkulisse für Anlagen der Lüftungstechnik

Also Published As

Publication number Publication date
DE3787742D1 (de) 1993-11-18
DE3605684A1 (de) 1987-08-27
EP0236810A3 (en) 1988-01-27
EP0236810A2 (fr) 1987-09-16
DE3605684C2 (de) 1996-11-21
ATE95935T1 (de) 1993-10-15

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