EP2472018B1 - Schalldämmungsanordnung - Google Patents

Schalldämmungsanordnung Download PDF

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Publication number
EP2472018B1
EP2472018B1 EP11195991.2A EP11195991A EP2472018B1 EP 2472018 B1 EP2472018 B1 EP 2472018B1 EP 11195991 A EP11195991 A EP 11195991A EP 2472018 B1 EP2472018 B1 EP 2472018B1
Authority
EP
European Patent Office
Prior art keywords
micro
perforations
supports
assembly
acoustic assembly
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.)
Active
Application number
EP11195991.2A
Other languages
English (en)
French (fr)
Other versions
EP2472018A1 (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.)
Normalu SAS
Original Assignee
Normalu SAS
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 Normalu SAS filed Critical Normalu SAS
Priority to PL11195991T priority Critical patent/PL2472018T3/pl
Publication of EP2472018A1 publication Critical patent/EP2472018A1/de
Application granted granted Critical
Publication of EP2472018B1 publication Critical patent/EP2472018B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • E04B1/99—Room acoustics, i.e. forms of, or arrangements in, rooms for influencing or directing sound
    • 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
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/001—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by provisions for heat or sound insulation
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/30—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by edge details of the ceiling; e.g. securing to an adjacent wall
    • E04B9/303—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by edge details of the ceiling; e.g. securing to an adjacent wall for flexible tensioned membranes
    • 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
    • E04F13/002—Coverings or linings, e.g. for walls or ceilings made of webs, e.g. of fabrics, or wallpaper, used as coverings or linings
    • 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
    • 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
    • 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
    • G10K11/162—Selection of materials
    • G10K11/168—Plural layers of different materials, e.g. sandwiches
    • 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 present invention relates to an acoustically absorbent assembly intended to constitute a wall element arranged in an enclosure, such as for example an apartment, a concert hall, the passenger compartment of a vehicle etc., and making it possible to control the state of acoustic absorption thereof.
  • Z MPP r + i'm (impedance of the fabric)
  • Z air - jcot (( ⁇ ⁇ D / vs 0 cos ⁇ (air impedance)
  • Z ⁇ Z air ⁇ + Z mpp cos ⁇ ⁇
  • the absorption spectrum that is to say the curve representing the variation in the absorption of the aglobal wall as a function of the sound frequency emitted, is related to the diameter of the micro-perforations, and that , all parameters being equal, aglobal absorption was better in the high frequencies when the diameters of the micro-perforations were larger. Conversely, for micro-perforations of smaller diameter the absorption was improved in the low frequencies.
  • an acoustic absorbing assembly intended to constitute, inside an enclosure, at least one wall element, this assembly comprising one or two supports provided with micro-perforations whose diameter is less than 2mm, remarkable in that that the support or supports extend substantially parallel to an adjacent wall, and the acoustic assembly comprises at least two series of micro-perforations distributed on said support.
  • the acoustic assembly described above is less effective for the absorption of frequencies between 4000 and 8000 Hz.
  • the object of the present invention is to propose an acoustic assembly having an enlarged acoustic absorption band compared to the acoustic assemblies of the prior art, this acoustic assembly being intended to constitute, for example, a false wall of a room, ie a partition or a ceiling, but also an interior coating of a vehicle etc.
  • the present invention thus relates to an acoustic absorbent assembly intended to constitute, inside an enclosure, at least one wall element, this assembly comprising at least two supports provided with micro-perforations, remarkable in that said supports are superimposed.
  • said supports do not include several series of micro-perforations having different diameters.
  • the acoustic assembly may consist of two supports (rigid wall or stretched canvas) each provided with a series of orifices which are distributed evenly over the surface said supports by forming respective meshes either of square shape or of triangular shape.
  • This acoustic assembly retains its sound absorption capacity even when it is placed behind a support not comprising micro-perforations or when it frames a support not comprising micro-perforations.
  • an acoustic absorbing assembly intended to constitute, inside an enclosure, at least one wall element, this assembly comprising at least two superimposed supports provided with micro-perforations, characterized in that the assembly further comprises a support not comprising micro-perforations, said support being superimposed with the two supports provided with micro-perforations, not framed by the supports provided with micro-perforations and disposed on the visible side when the assembly is placed in the enclosure.
  • the visible element consists of the support not comprising micro-perforations. This is particularly advantageous, because it is thus possible to exploit the aesthetic virtues (for example printing, lacquering) of the support element not comprising micro-perforations.
  • the acoustic assembly according to the invention consists of at least three parallel supports each comprising a series of micro-perforations, as defined above, remarkable in that said supports are superimposed.
  • the acoustic assembly according to the invention consists of three parallel supports each comprising a series of micro-perforations, remarkable in that said supports are superimposed.
  • the support comprising a series of micro-perforations closest to the adjacent wall is preferably 50 mm from the support comprising a series of contiguous micro-perforations.
  • the support comprising a series of micro-perforations furthest from the adjacent wall is preferably 30 mm away from the support comprising a series of contiguous micro-perforations.
  • said supports extend substantially parallel to each other.
  • said supports are inscribed in planes forming between them an angle between 1 and 45 degrees.
  • the supports of the acoustic assembly according to the invention consist of stretched sheets, in particular made of polyvinyl chloride (PVC) films, the thickness of which will preferably be between 0.1 and 0.3 mm, but may also be formed of rigid elements.
  • PVC polyvinyl chloride
  • the supports of the acoustic assembly according to the invention consist of textiles or any other flexible or rigid material.
  • the distance between the different supports each comprising a series of micro-perforations is preferably between 10 and 90 mm and even more preferably between 20 and 60 mm.
  • the distance between the acoustic assembly according to the invention and said adjacent wall is preferably between 100 and 400 mm and even more preferably between 250 and 350 mm.
  • micro-perforations are circular in shape and are preferably distributed in a mesh of square, triangular or rectangular shape.
  • the micro-perforations have a diameter less than 2mm, even more preferably less than 1mm and quite preferentially less than or equal to 0.5mm.
  • the supports comprising a series of micro-perforations have a density of micro-perforations greater than 1000 micro-perforations / m 2 , more preferably greater than 30,000 micro-perforations / m 2 , even more preferably greater than 300,000 micro-perforations / m 2 and quite preferably greater than 400,000 micro-perforations / m 2 .
  • Those skilled in the art are able to determine the optimal density of micro-perforations as a function of. This can in particular be adapted according to the nature of the material constituting said support.
  • the supports used in the context of the present invention are advantageously provided with a peripheral border forming a harpoon. Said harpoon allows the supports according to the invention to be fixed to side members.
  • any other method of fixing said supports can be envisaged, among these we may notably mention clips and staples.
  • said spar is a heddle.
  • all the supports included in the acoustic assembly according to the invention are fixed on the same rail.
  • FIG. 1 a canvas 3, implemented in particular at figures 2 , 4 , 6 and 8 , which is provided with micro-perforations d1 which are regularly distributed over its entire surface (300,000 micro-perforations / m2). These perforations, which are circular, have a diameter of 0.2 mm.
  • the figures 2 and 4 present a first embodiment of the acoustic assembly 1 according to the invention.
  • This assembly comprises a support not comprising micro-perforations 2 (here a stretched PVC canvas) and two supports provided with micro-perforations 3 as described in figure 1 . All these supports extend substantially parallel to an adjacent wall and the supports provided with micro-perforations are placed between the support not comprising micro-perforations and an adjacent wall.
  • the spaces delimited by the supports are open to the outside.
  • the spaces delimited by the supports are closed.
  • FIG 3 a diagram showing the absorption spectrum obtained by the acoustic unit 1 shown in the figure 2 thus formed as a function of the applied sound frequency. It can thus be seen in this figure that the maximum absorption of this set is situated at a frequency of the order of 1000 Hz and that for an absorption of 0.5 this extends from a frequency of approximately 500 Hz up to approximately 2,500 Hz, or approximately a frequency interval of the order of 2000 Hz.
  • the figures 6 and 8 present another embodiment of the acoustic assembly 1 according to the invention.
  • This acoustic assembly consists of three parallel supports 3 each comprising a series of micro-perforations whose diameter is less than 2mm.
  • the spaces delimited by the supports 3 are open to the outside.
  • the spaces delimited by the supports 3 are closed.
  • FIG 7 a diagram showing the absorption spectrum obtained by the acoustic assembly 1 shown in the figure 6 thus formed as a function of the applied sound frequency. It can thus be seen in this figure that a maximum of absorption of this set is located at a frequency comprised 1000 Hz and 8000 Hz and that for an absorption of 0.5 this extends from a frequency of approximately 300 Hz up to approximately 8000 Hz, i.e. approximately a frequency interval of the order of 7300 Hz.
  • FIG 9 a diagram showing the absorption spectrum obtained by the acoustic assembly 1 shown in the figure 8 thus formed as a function of the applied sound frequency. It can thus be seen in this figure that the maximum absorption of this set 1 is situated at a frequency of the order of 2000 Hz and that for an absorption of 0.5 this extends from a frequency of approximately 140 Hz up to approximately 5000 Hz, i.e. approximately a frequency interval of the order of 4860 Hz.
  • the present invention therefore makes it possible to substantially extend the width of the sound spectrum for which the absorption obtained is effective.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Electromagnetism (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Building Environments (AREA)
  • Percussion Or Vibration Massage (AREA)

Claims (9)

  1. Schalldämpfende Anordnung (1), die dazu bestimmt ist, innerhalb eines abgeschlossenen Bereichs mindestens ein Wandelement zu bilden, wobei diese Anordnung (1) mindestens zwei übereinander angeordnete Träger (3) umfasst, die mit Mikroperforationen versehen sind, dadurch gekennzeichnet, dass die Anordnung (1) des Weiteren einen Träger (2) ohne Mikroperforationen umfasst, wobei dieser Träger und die beiden Träger mit Mikroperforationen übereinander angeordnet sind, er nicht von den mit Mikroperforationen versehenen Trägern eingerahmt wird und an der sichtbaren Seite angeordnet ist, wenn die Anordnung (1) im abgeschlossenen Bereich platziert wird.
  2. Schalldämpfende Anordnung (1) nach Anspruch 1, dadurch gekennzeichnet, dass sie aus mindestens drei parallelen Trägern (3) besteht, die jeweils eine Reihe von Mikroperforationen aufweisen, dadurch gekennzeichnet, dass die Träger (3) übereinander angeordnet sind.
  3. Schalldämpfende Anordnung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Träger aus gespannten Lagen, insbesondere aus Polyvinylchlorid (PVC)-Folien, bestehen.
  4. Schalldämpfende Anordnung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Träger aus Textilien oder anderen flexiblen oder starren Materialien bestehen.
  5. Schalldämpfende Anordnung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Abstand zwischen den Trägern (3) mit jeweils einer Reihe von Mikroperforationen 10 bis 90 mm beträgt.
  6. Schalldämpfende Anordnung (1) nach Anspruch 2, dadurch gekennzeichnet, dass die Mikroperforationen einen Durchmesser kleiner 2 mm haben.
  7. Schalldämpfende Anordnung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Mikroperforationen kreisförmig sind und vorzugsweise in einer quadratischen, dreieckigen oder rechteckigen Verknüpfung verteilt sind.
  8. Akustische Anordnung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Mikroperforationen einen Durchmesser kleiner 1 mm haben.
  9. Akustische Anordnung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Träger, die eine Reihe von Mikroperforationen umfassen, eine Mikroperforationsdichte von mehr als 1 000 Mikroperforationen/m2 haben.
EP11195991.2A 2010-12-30 2011-12-29 Schalldämmungsanordnung Active EP2472018B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11195991T PL2472018T3 (pl) 2010-12-30 2011-12-29 Akustyczny zespół pochłaniający

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1005190A FR2970009B1 (fr) 2010-12-30 2010-12-30 Ensemble acoustiquement absorbant

Publications (2)

Publication Number Publication Date
EP2472018A1 EP2472018A1 (de) 2012-07-04
EP2472018B1 true EP2472018B1 (de) 2020-03-25

Family

ID=44462003

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11195991.2A Active EP2472018B1 (de) 2010-12-30 2011-12-29 Schalldämmungsanordnung

Country Status (4)

Country Link
EP (1) EP2472018B1 (de)
ES (1) ES2790950T3 (de)
FR (1) FR2970009B1 (de)
PL (1) PL2472018T3 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
FR3028875B1 (fr) * 2014-11-26 2016-12-09 Normalu Structure a toiles tendues pour la realisation d'un faux plafond ou d'un caisson suspendu
WO2016087587A1 (en) 2014-12-05 2016-06-09 Eleda S.R.L. Sound-absorbing element and system
USD894429S1 (en) 2018-04-13 2020-08-25 Caimi Brevetti S.P.A. Sound absorbing panel
USD895158S1 (en) 2018-04-13 2020-09-01 Caimi Brevetti S.P.A. Sound absorbing panel
USD895159S1 (en) 2018-04-13 2020-09-01 Caimi Brevetti S.P.A. Sound absorbing panel
US20220148550A1 (en) * 2019-03-04 2022-05-12 Corning Incorporated Micro-perforated panel systems, applications, and methods of making micro-perforated panel systems

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK4379A (da) * 1979-01-04 1980-07-05 Daempa As Lydabsorberingsaggregat
DE4408782A1 (de) * 1994-03-15 1995-09-21 Fraunhofer Ges Forschung Folien-Schallabsorber
DE10022902A1 (de) * 1999-08-11 2001-03-08 Hp Chem Pelzer Res & Dev Ltd Bauteil mit hoher absorptiver Wirkung über einem breiten Frequenzbereich
DK2054562T3 (da) * 2006-08-10 2013-05-27 Brevetix Lydabsorberende indretning
FR2926099B1 (fr) * 2008-01-09 2010-03-19 Normalu Nappe pour parois tendues accoustiques etanches et partiellement translucides

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
FR2970009A1 (fr) 2012-07-06
EP2472018A1 (de) 2012-07-04
FR2970009B1 (fr) 2021-06-11
PL2472018T3 (pl) 2020-08-10
ES2790950T3 (es) 2020-10-30

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