EP0236810A2 - Construction pour l'atténuation du son par absorption - Google Patents
Construction pour l'atténuation du son par absorption Download PDFInfo
- 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
Links
- 238000013016 damping Methods 0.000 title abstract description 4
- 238000010521 absorption reaction Methods 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 19
- 230000003584 silencer Effects 0.000 claims description 12
- 238000010030 laminating Methods 0.000 claims description 10
- 238000003475 lamination Methods 0.000 claims description 6
- 239000000428 dust Substances 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract 2
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 239000004800 polyvinyl chloride Substances 0.000 description 3
- 229920000915 polyvinyl chloride Polymers 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011490 mineral wool Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000737 Duralumin Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000002557 mineral fiber Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000013464 silicone adhesive Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 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
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)
- 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)
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)
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)
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)
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)
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. |
-
1986
- 1986-02-21 DE DE3605684A patent/DE3605684C2/de not_active Expired - Fee Related
-
1987
- 1987-02-19 AT AT87102341T patent/ATE95935T1/de not_active IP Right Cessation
- 1987-02-19 DE DE87102341T patent/DE3787742D1/de not_active Expired - Fee Related
- 1987-02-19 EP EP87102341A patent/EP0236810B1/fr not_active Expired - Lifetime
Patent Citations (4)
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)
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)
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 |
DE3605684A1 (de) | 1987-08-27 |
EP0236810A3 (en) | 1988-01-27 |
EP0236810B1 (fr) | 1993-10-13 |
DE3605684C2 (de) | 1996-11-21 |
ATE95935T1 (de) | 1993-10-15 |
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