EP2054562A1 - Schalldämpfungsanordnung - Google Patents

Schalldämpfungsanordnung

Info

Publication number
EP2054562A1
EP2054562A1 EP06794322A EP06794322A EP2054562A1 EP 2054562 A1 EP2054562 A1 EP 2054562A1 EP 06794322 A EP06794322 A EP 06794322A EP 06794322 A EP06794322 A EP 06794322A EP 2054562 A1 EP2054562 A1 EP 2054562A1
Authority
EP
European Patent Office
Prior art keywords
micro
perforations
acoustic assembly
support
assembly according
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
EP06794322A
Other languages
English (en)
French (fr)
Other versions
EP2054562B1 (de
Inventor
Jean-Marc Scherrer
Christian Nocke
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.)
Brevetix SARL
Original Assignee
Brevetix SARL
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 Brevetix SARL filed Critical Brevetix SARL
Publication of EP2054562A1 publication Critical patent/EP2054562A1/de
Application granted granted Critical
Publication of EP2054562B1 publication Critical patent/EP2054562B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/0867—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements having acoustic absorption means on the visible surface
    • 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
    • E04B1/8409—Sound-absorbing elements sheet-shaped
    • 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
    • E04B2001/8263—Mounting of acoustical elements on supporting structure, e.g. framework or wall surface
    • E04B2001/8281—Flat elements mounted parallel to a supporting surface with an acoustically active air gap between the elements and the mounting surface

Definitions

  • the absorption spectrum that is to say the curve representing the variation of the absorption of the wall ⁇ g iobai e as a function of the sound frequency emitted is related to the diameter of the micro-perforations , and that, all the parameters being equal elsewhere, the cigiohaie absorption was better in the high frequencies when the diameters of the micro-perforations were greater. Conversely, for microperforations of smaller diameter absorption was improved in the low frequencies.
  • the present invention aims to provide an acoustic assembly for expanding the effective acoustic absorption band of an acoustic assembly using one or more walls pierced with microperforations, this acoustic assembly being intended to constitute for example a false wall of a room that is to say a partition or a ceiling, but also a lining of a vehicle etc. ..
  • the present invention thus relates to an acoustic absorbent assembly intended to constitute, within an enclosure, at least one wall element, this assembly comprising at least one support provided with micro-perforations whose diameter is less than 2 mm. characterized in that
  • the support extends substantially parallel to an adjacent wall
  • the acoustic assembly comprises at least two sets of micro-perforations distributing on said support.
  • the micro-perforations may be distributed on one or more supports.
  • the series of micro-perforations will have respective different surfaces and, when this absorbent assembly will have several supports, the series of micro-perforations may be identical on the two supports, are identical on each support but different from one medium to another, or different on each of the supports.
  • the acoustic assembly may also of course be constituted by at least two parallel flat or non-planar walls each comprising a combination of two series of microperforations, of different surfaces.
  • FIG. 2 is a schematic vertical sectional drawing of an example of an arrangement of a micro-perforated stretched fabric with respect to a ceiling
  • FIG. 3 is a graph showing the variation of the sound absorption of a micro-perforated fabric. perforated of the type shown in Figure 1 implemented according to Figure 2, depending on the sound frequency,
  • FIG. 4 is a schematic partial perspective view of a micro-perforated fabric according to the prior art and comprising larger microperforations and spacings than in the embodiment shown in FIG. 1.
  • FIG. 5 is a graph showing the variation of the sound absorption of a micro-perforated fabric of the type represented in FIG. 4 implemented according to FIG. 2, as a function of the sound frequency
  • FIGS. 6a and 6b are partial diagrammatic plan views of a micro-perforated fabric according to the invention which is provided with orifices of the same types as those respectively shown in Figures 1 and 4, respectively with a square mesh and a triangular mesh.
  • FIG. 7 is a graph showing the variation of the sound absorption of an acoustic assembly according to the invention consisting of a micro-perforated cloth of the type of that represented in FIGS. 6a and 6b implemented in an embodiment according to FIG. Figure 1, depending on the sound frequency.
  • FIG. 8 is a schematic vertical sectional drawing of an example of an arrangement of two micro-perforated canvases with respect to a ceiling
  • FIG. 9 is a graph showing the variation of the sound absorption of an acoustic assembly according to FIG. invention consisting of two micro-perforated superimposed and identical fabrics.
  • FIG. 10 is a graph showing the variation of the sound absorption of an acoustic assembly according to the invention consisting of two superimposed micro-perforated canvases, the diameter and the spacing of the microperforations being different.
  • FIGS. 6a and 6b show an acoustic absorbent assembly produced according to the invention and which consists of a single wall 3 formed of a thin polyvinyl chloride (PVC) cloth (0.17 mm) intended to to constitute a false ceiling of a room and which, for this purpose, is stretched at a distance D of 100 mm under the true ceiling 1 thereof as shown in Figure 1.
  • PVC polyvinyl chloride
  • FIG. 9 shows the acoustic absorption spectrum of such an assembly. It can also be seen that such an arrangement makes it possible to obtain a consequent absorption ⁇ of 0.5 in a range of frequencies extending from about 300 Hz up to 5000 Hz, or over a frequency range of about 4700 Hz.
  • the acoustic assembly also consists of two webs 3a and 3b of the same respective thicknesses and which are arranged as before.
  • the first web 3a is uniformly perforated by holes 0.2 mm in diameter which are distributed uniformly over its surface and are separated from each other by a distance of 2 mm.
  • the second fabric 3b is uniformly perforated by larger holes, 0.5 mm in diameter, which are distributed uniformly over its surface and which are separated from each other by a distance of 14 mm.
  • FIG. 10 shows the acoustic absorption spectrum of such an assembly. It can be seen that such an arrangement makes it possible to obtain a consequent absorption of 0.5 in a frequency range extending from about 150 Hz to 5000 Hz, ie over a frequency range of the order of 4850 Hz.
  • the present invention thus makes it possible to extend the range of frequencies that are absorbed by thin walls provided with micro-perforations.

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Electromagnetism (AREA)
  • Building Environments (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
EP06794322A 2006-08-10 2006-08-10 Schalldämpfungsanordnung Active EP2054562B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FR2006/001940 WO2008017737A1 (fr) 2006-08-10 2006-08-10 Ensemble acoustiquement absorbant

Publications (2)

Publication Number Publication Date
EP2054562A1 true EP2054562A1 (de) 2009-05-06
EP2054562B1 EP2054562B1 (de) 2013-02-13

Family

ID=37846045

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06794322A Active EP2054562B1 (de) 2006-08-10 2006-08-10 Schalldämpfungsanordnung

Country Status (3)

Country Link
EP (1) EP2054562B1 (de)
DK (1) DK2054562T3 (de)
WO (1) WO2008017737A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2970009B1 (fr) * 2010-12-30 2021-06-11 Normalu Ensemble acoustiquement absorbant
FR3000509B1 (fr) 2012-12-31 2015-01-16 Jean-Marc Scherrer Ensemble etanche et acoustiquement absorbant pour fausse paroi
FR3018384B1 (fr) * 2014-03-04 2016-03-11 Scherrer Jean Marc Ensemble d'absorption acoustique a hautes et basses frequences
US11608291B2 (en) 2016-11-04 2023-03-21 Corning Incorporated Micro-perforated panel systems, applications, and methods of making micro-perforated panel systems
EP3935021A1 (de) * 2019-03-04 2022-01-12 Corning Incorporated Mikroperforierte plattensysteme, anwendungen und verfahren zur herstellung von mikroperforierten plattensystemen

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1090617A (fr) * 1953-09-29 1955-04-01 Fibrociment Et Des Revetements Perfectionnements apportés aux matériaux de revêtement pour l'absorption du son
DE1738778U (de) * 1954-11-13 1957-01-31 Acieroid Fa Selbsttragende platte fuer bedachungen.
DE9320543U1 (de) 1993-04-20 1994-11-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eV, 80636 München Schallabsorbierendes Bauteil
DE4315759C1 (de) * 1993-05-11 1994-05-05 Fraunhofer Ges Forschung Schallabsorbierendes Glas- oder transparentes Kunstglasbauteil
US5700727A (en) 1995-07-24 1997-12-23 Micron Technology, Inc. Method of forming a thin film transistor
EP0816483A1 (de) 1996-06-27 1998-01-07 The Procter & Gamble Company Körnige Bleichmittelzusammensetzungen
DE19626676A1 (de) * 1996-07-03 1998-01-08 Kaefer Isoliertechnik Vorrichtung zur Verminderung von Schallpegeln in Gebäuden
US6617002B2 (en) * 1998-07-24 2003-09-09 Minnesota Mining And Manufacturing Company Microperforated polymeric film for sound absorption and sound absorber using same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008017737A1 *

Also Published As

Publication number Publication date
EP2054562B1 (de) 2013-02-13
DK2054562T3 (da) 2013-05-27
WO2008017737A1 (fr) 2008-02-14

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