EP0236810A2 - Construction pour l'atténuation du son par absorption - Google Patents

Construction pour l'atténuation du son par absorption Download PDF

Info

Publication number
EP0236810A2
EP0236810A2 EP87102341A EP87102341A EP0236810A2 EP 0236810 A2 EP0236810 A2 EP 0236810A2 EP 87102341 A EP87102341 A EP 87102341A EP 87102341 A EP87102341 A EP 87102341A EP 0236810 A2 EP0236810 A2 EP 0236810A2
Authority
EP
European Patent Office
Prior art keywords
film
support structure
absorption
absorption material
backdrop
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.)
Granted
Application number
EP87102341A
Other languages
German (de)
English (en)
Other versions
EP0236810B1 (fr
EP0236810A3 (en
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
Wacker Chemie AG
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
Family has litigation
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(A2) "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, Wacker Chemie AG 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, the absorption material of which is held down by a support structure, this support structure being laminated on its side facing away from the absorption material by a film.
  • the silencer baffles according to the invention are suitable for damping sound waves in flowing gases containing moist dust which tends to stick.
  • the object of the present invention was to dampen the sound waves in a moist and dusty flowing gas in a wide frequency range. Another object of the present invention was to dampen the sound waves in a damp gas containing sticky dust without reducing the effectiveness of the muffler due to deposits on the muffler or due to the wear through of the lamination with incrustation of external support devices is reduced by relative movement between the film and the support device.
  • the absorption silencer backdrop according to the invention is, as is customary in the case of such backdrops, held by a profile frame which can be made, for example, of metal, such as steel or aluminum, or of plastic.
  • the usual precautions can be taken on the profile frame to 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 stone, mineral or glass wool; other absorption materials are conceivable, but mostly less inexpensive. The absorption material is held down by the support structure mentioned.
  • 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 from the outset during its manufacturing process, for example with ribs and the like. If the latter is the case, it is preferred that the laminating film is provided on only one side with the support structure, namely on the side facing away from the gas side.
  • 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 hold, 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. Limited movements of the film for self-cleaning and acoustic transparency are desirable.
  • 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 production process, the laminating film can, for example, be glued, welded or sintered onto the support structure. 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. When choosing the suitable material, the temperature and the chemical behavior of the gases in which the sound is to be damped must be taken into account.
  • the film should be essentially smooth on the gas side so as not to promote the agglomeration of sticky particles on its surface.
  • the film should only be 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 anti-adhesion effect.
  • 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, 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 moist 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)
  • Building Environments (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Laminated Bodies (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Exhaust Silencers (AREA)
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 true EP0236810A2 (fr) 1987-09-16
EP0236810A3 EP0236810A3 (en) 1988-01-27
EP0236810B1 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 (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0531698A2 (fr) * 1991-09-12 1993-03-17 Luwa Aktiengesellschaft Ecran amortisseur de son et cassette pour écran amortisseur de son
EP1021686A1 (fr) * 1997-09-11 2000-07-26 HRL Technology Pty. Ltd. Dispositif ameliore pour attenuer le son
GB2621015A (en) * 2023-06-06 2024-01-31 Pineapple Contracts Unlimited Wall panel

Families Citing this family (2)

* 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
DE102009034463A1 (de) 2009-07-22 2011-02-03 Filtro Klimatechnik Gmbh Schalldämpfungskörper

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU407054A (en) * 1954-10-22 1955-12-01 Thorp Clive Cowdrey Improved means for securing surfacing or roofing materials orthe like to building structures
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
DE3417874A1 (de) * 1983-05-19 1984-11-22 United McGill Corp., Groveport, Ohio Schallschluckplatte und schallschluckverfahren

Family Cites Families (2)

* 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
DE8303575U1 (de) * 1983-02-09 1983-06-09 Gerb-Akustik Consult GmbH, 4300 Essen Vorrichtung zur daempfung der geraeusche in kuehltuermenund grossgeblaesen.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU407054A (en) * 1954-10-22 1955-12-01 Thorp Clive Cowdrey Improved means for securing surfacing or roofing materials orthe like to building structures
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
DE3417874A1 (de) * 1983-05-19 1984-11-22 United McGill Corp., Groveport, Ohio Schallschluckplatte und schallschluckverfahren

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 (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0531698A2 (fr) * 1991-09-12 1993-03-17 Luwa Aktiengesellschaft Ecran amortisseur de son et cassette pour écran amortisseur de son
EP0531698A3 (en) * 1991-09-12 1993-06-16 Luwa Aktiengesellschaft Sound-damping screen and cassette for sound-damping screen
EP1021686A1 (fr) * 1997-09-11 2000-07-26 HRL Technology Pty. Ltd. Dispositif ameliore pour attenuer le son
EP1021686A4 (fr) * 1997-09-11 2001-08-08 Hrl Technology Pty Ltd Dispositif ameliore pour attenuer le son
GB2621015A (en) * 2023-06-06 2024-01-31 Pineapple Contracts Unlimited Wall panel

Also Published As

Publication number Publication date
DE3787742D1 (de) 1993-11-18
EP0236810B1 (fr) 1993-10-13
ATE95935T1 (de) 1993-10-15
DE3605684A1 (de) 1987-08-27
DE3605684C2 (de) 1996-11-21
EP0236810A3 (en) 1988-01-27

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