EP1876308B1 - Dispositif absorbant le bruit - Google Patents

Dispositif absorbant le bruit Download PDF

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Publication number
EP1876308B1
EP1876308B1 EP07405185A EP07405185A EP1876308B1 EP 1876308 B1 EP1876308 B1 EP 1876308B1 EP 07405185 A EP07405185 A EP 07405185A EP 07405185 A EP07405185 A EP 07405185A EP 1876308 B1 EP1876308 B1 EP 1876308B1
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EP
European Patent Office
Prior art keywords
core
sound
channels
holes
absorbing device
Prior art date
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Active
Application number
EP07405185A
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German (de)
English (en)
Other versions
EP1876308A2 (fr
EP1876308A3 (fr
Inventor
Robert Bähler
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.)
Akustik & Raum AG
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Akustik & Raum AG
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Publication of EP1876308A3 publication Critical patent/EP1876308A3/fr
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B1/86—Sound-absorbing elements slab-shaped

Definitions

  • the present invention falls within the field of acoustics; It relates to a sound absorbing device comprising a plate-shaped core having a first and a second surface and a number of side surfaces connecting these surfaces, wherein a first coating and a second coating at least partially cover the first and second surfaces of the core, respectively the first and / or the second coating is or are provided with grid-like arranged holes. Furthermore, the invention relates to a method for producing a sound-absorbing device.
  • Such sound-absorbing devices are for example from the EP 1 431 472 A1 known. They are used, for example, for covering walls and ceilings and, in addition to the sound-absorbing effect, they also meet the requirements in terms of aesthetics. Since the hole diameters are very small, the holes in the coatings are no longer perceptible to a viewer at a distance from the sound-absorbing devices, so that only the structure of a coating material is perceived. If the coating is formed, for example, from a wood veneer, the viewer perceives only the wood structure or the grain, which in addition to the desired acoustic properties and the aesthetic effect is achieved.
  • the object of the invention for the device is now to develop a sound-absorbing device to the effect that its static strength is increased with respect to a torsionally stiff as possible installation and that compared to the known sound-absorbing devices, the Schallabsorbtionstell is improved.
  • the object of the method for producing a sound-absorbing device according to the invention is that the production is simplified and thus more cost-effective.
  • the gist of the invention resides in the fact that in a core of the device at least partially a number of substantially parallel aligned grooves are arranged which penetrate the two surfaces of the core, with holes in the coatings opening into the grooves. It should be emphasized that the grooves in the core of the device can be in operative connection with the holes in the coatings directly and over the entire groove opening, wherein the core of the device and the coating can initially be provided independently of each other before they are joined together.
  • the inventive device has an improved sound absorption behavior.
  • the grooves are arranged perpendicular to the first and second coating, since the milling of the grooves in the core is thus easily possible. Without the idea of the invention but it is also conceivable that the grooves can be driven at an angle to the surfaces of the core in the same.
  • the core has a number of struts, which are also groove-free, so that the core is divided by the number of struts in several areas with grooves.
  • the core consists of a chipboard, wherein the chipboard is produced by means of extrusion of wood chips, and the wood chips forming the chipboard can be aligned in planes.
  • the core is made according to its use of other materials; location-dependent conditions may be, for example, a particular static stability or fire resistance. According to these specifications, the material used can be selected without departing from the spirit of the invention.
  • the first and second coatings of wood veneer whose wood fibers are aligned parallel to the grooves. This increases the torsional rigidity.
  • Particularly advantageous acoustic effects occur when the grid-like arranged holes are about 1.1 mm or smaller and the mutual distances of the holes are 10 mm or less.
  • the core here is to be seen in that the components of the sound-absorbing device can be provided independently of each other and only then connected to each other. This simplifies the manufacturing process because the grid-like holes in the coatings are merely driven into the same and these holes can be in operative connection with the grooves provided in the core after assembly.
  • Fig.1 shows a spatial representation of a sound-absorbing device according to the invention with a plate-shaped core 2, which has a first and a second surface 1a, 1b, which are connected to one another via side surfaces 5.
  • the surfaces 1a, 1b are provided with a first and / or a second coating 4a, 4b, which have holes 6 arranged in the manner of a grid.
  • AA is shown a section line through the core of the device.
  • the Fig. 2 shows now in a sectional view along the line AA the Fig. 1 the inner structure of the core 2.
  • This core 2 has a number of grooves 3, which penetrate the core 2 perpendicular to the sectional plane. Furthermore, the core has an edge region 8, which delimits the core in the manner of a frame to the side surfaces 5.
  • struts 7 are provided in the core 2, which divide the core into areas with and without grooves 3.
  • the holes 6 stand with the grooves 3 ( Fig. 2 ) directly in operative connection.
  • the holes 6 in the form of a micro perforation have a size of 1.1 mm or smaller, typically 0.55 mm, and are approximately 10 mm or less, typically arranged 3 mm adjacent to one another.
  • the grooves 3 are chosen about 3mm wide; the perforated surface of the coatings 4a, 4b coming into operative connection with the grooves 3 constitutes 50-70% of the total perforated coating 4a, 4b.
  • the core 2 may be made of a chipboard by extrusion, in which the grooves 3 are introduced by means of milling. During extrusion, the use of wood shavings creates levels in which the wood shavings are arranged.
  • the grooves 3 are milled in the core 2 with respect to a statically stiffer device perpendicular to the planes of the wood chips.
  • the coatings 4a, 4b may be made of wood veneer whose wood fibers are aligned parallel to the grooves 3 of the core 2. By means of a gluing process, the coatings 4a, 4b are glued to the surfaces 1a, 1b, the holes 6 not being closed towards the grooves 3.
  • the core 2 and the coatings 4a, 4b are provided independently of one another according to a method according to the invention and then glued together.
  • inventive sound-absorbing device is not limited to the described embodiment.
  • inventive sound-absorbing device is not limited to the described embodiment.
  • materials used can be chosen according to the location of use, for example, to achieve a desired fire resistance or a certain static stiffness.

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  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
  • Filters And Equalizers (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Laminated Bodies (AREA)

Claims (10)

  1. Dispositif absorbant le bruit, comprenant une âme (2) en forme de plaque avec une première et une deuxième surfaces (1a, 1b) et avec un certain nombre de faces latérales (5) reliant ces surfaces (1a, 1b), sachant qu'un premier revêtement (4a) et un deuxième revêtement (4b) recouvrent respectivement au moins pour partie la première et la deuxième surfaces (1a, 1b) de l'âme (2), et sachant que le premier revêtement et/ou le deuxième revêtement (4a, 4b) est ou sont pourvus de trous (6) disposés à la façon d'un quadrillage, sachant que l'âme (2) est pourvue au moins pour partie d'un certain nombre de rainures (3) orientées essentiellement en parallèle, qui traversent les deux surfaces (1a, 1b) de l'âme (2), sachant que les trous (6) dans les revêtements (4a, 4b) débouchent dans les rainures (3), caractérisé en ce que les trous (6) disposés à la façon d'un quadrillage se présentent sous la forme d'une micro-perforation d'environ 1,1 mm ou moins, typiquement de 0,55 mm, et en ce que les espacements mutuels des trous (6) sont égaux à 10 mm ou moins, typiquement à 3 mm, et en ce que les rainures (3) sont choisies d'une largeur d'environ 3 mm, de sorte qu'une surface perforée des revêtements (4a, 4b) qui entre en liaison fonctionnelle avec les rainures (3) occupe 50 à 70 % de la totalité du revêtement perforée (4a, 4b).
  2. Dispositif absorbant le bruit selon la revendication 1, caractérisé en ce que les rainures (3) sont disposées perpendiculairement au premier et au deuxième revêtements (4a, 4b).
  3. Dispositif absorbant le bruit selon la revendication 1 ou 2, caractérisé en ce que l'âme (2) présente le long des faces latérales (5) une région de bord du genre cadre (8) qui est dépourvue de rainures (3).
  4. Dispositif absorbant le bruit selon l'une des revendications précédentes, caractérisé en ce que l'âme (2) présente une entretoise (7) ou un certain nombre d'entretoises (7) qui est ou qui sont dépourvues de rainures (3), de sorte que l'âme (2) est divisée par l'entretoise (7) ou par les entretoises (7) en plusieurs régions pourvues de rainures (3).
  5. Dispositif absorbant le bruit selon l'une des revendications précédentes, caractérisé en ce que l'âme (2) est constituée d'un panneau de particules.
  6. Dispositif absorbant le bruit selon la revendication 5, caractérisé en ce que le panneau de particules peut être fabriqué par extrusion à partir de particules de bois, sachant que les particules de bois formant le panneau de particules peuvent être orientées en plans.
  7. Dispositif absorbant le bruit selon la revendication 6, caractérisé en ce que les rainures (3) sont disposées perpendiculairement aux plans formés par les particules de bois.
  8. Dispositif absorbant le bruit selon l'une des revendications précédentes, caractérisé en ce que le premier revêtement et/ou le deuxième revêtement (4a, 4b) sont constitués de placage en bois.
  9. Dispositif absorbant le bruit selon la revendication 8, caractérisé en ce que le placage en bois est constitué de fibres de bois qui sont orientées parallèlement aux rainures (3).
  10. Procédé de fabrication d'un dispositif absorbant le bruit selon l'une des revendications précédentes, caractérisé en ce que, à la suite d'un processus d'extrusion de l'âme (2), un certain nombre de rainures (3) orientées essentiellement en parallèle et d'une largeur d'environ 3 mm sont fraisées dans cette âme (2), en ce que le premier revêtement et/ou le deuxième revêtement (4a, 4b) est ou sont, avec un dispositif à poinçonner, perforés de telle sorte qu'ils présentent des trous (6) disposés à la façon d'un quadrillage, sachant que les trous (6) disposés à la façon d'un quadrillage se présentent sous la forme d'une micro-perforation d'environ 1,1 mm ou moins, typiquement de 0,55 mm, et que les espacements mutuels des trous (6) sont égaux à 10 mm ou moins, typiquement à 3 mm, et en ce que le premier et le deuxième revêtements (4a, 4b) sont ensuite assemblés aux surfaces (1a, 1b) de l'âme (2) de telle sorte que les trous (6) dans les revêtements (4a, 4b) débouchent dans les rainures (3), et qu'une surface perforée des revêtements (4a, 4b) qui entre en liaison fonctionnelle avec les rainures (3) occupe 50 à 70 % de la totalité du revêtement perforé (4a, 4b).
EP07405185A 2006-07-07 2007-06-29 Dispositif absorbant le bruit Active EP1876308B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH11012006 2006-07-07

Publications (3)

Publication Number Publication Date
EP1876308A2 EP1876308A2 (fr) 2008-01-09
EP1876308A3 EP1876308A3 (fr) 2008-01-23
EP1876308B1 true EP1876308B1 (fr) 2009-05-27

Family

ID=38556683

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07405185A Active EP1876308B1 (fr) 2006-07-07 2007-06-29 Dispositif absorbant le bruit

Country Status (4)

Country Link
EP (1) EP1876308B1 (fr)
AT (1) ATE432394T1 (fr)
DE (1) DE502007000763D1 (fr)
DK (1) DK1876308T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH700728B1 (de) 2007-07-13 2010-10-15 Albers & Co Akustikelemente.
CH706394A2 (de) 2012-04-26 2013-10-31 Akustik & Raum Ag Schallabsorbierendes Element.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3447996A (en) * 1965-06-10 1969-06-03 Max Himmelheber Stratified wood composition panel
DE202004018241U1 (de) * 2004-11-24 2006-04-06 Fritz Egger Gmbh & Co Deckschicht und Paneel mit schallabsorbierenden Eigenschaften

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USB100265I5 (fr) * 1963-08-20
DE19839973A1 (de) * 1998-09-02 2000-03-23 Fraunhofer Ges Forschung Plattenförmiges Bauelement
EP1321593A3 (fr) * 2001-12-21 2004-04-07 Diaplan Liegenschaftsverwaltungs GmbH Panneau pour élément de paroi de rebond ou élément acoustique
AT413121B (de) * 2004-02-24 2005-11-15 Lenz Nenning Gmbh Schalldämmendes paneel
ITRM20040499A1 (it) * 2004-10-13 2005-01-13 Polyeuro S P A Elemento per l'isolamento termico di spazi abitativi ed edifici in genere.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3447996A (en) * 1965-06-10 1969-06-03 Max Himmelheber Stratified wood composition panel
DE202004018241U1 (de) * 2004-11-24 2006-04-06 Fritz Egger Gmbh & Co Deckschicht und Paneel mit schallabsorbierenden Eigenschaften

Also Published As

Publication number Publication date
DK1876308T3 (da) 2009-08-31
EP1876308A2 (fr) 2008-01-09
EP1876308A3 (fr) 2008-01-23
ATE432394T1 (de) 2009-06-15
DE502007000763D1 (de) 2009-07-09

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