EP0524566A1 - Sound absorbing panel - Google Patents

Sound absorbing panel Download PDF

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Publication number
EP0524566A1
EP0524566A1 EP92112326A EP92112326A EP0524566A1 EP 0524566 A1 EP0524566 A1 EP 0524566A1 EP 92112326 A EP92112326 A EP 92112326A EP 92112326 A EP92112326 A EP 92112326A EP 0524566 A1 EP0524566 A1 EP 0524566A1
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EP
European Patent Office
Prior art keywords
sound absorption
absorption
plate
panel
panel according
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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.)
Withdrawn
Application number
EP92112326A
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German (de)
French (fr)
Inventor
Zdzislaw Pregowski
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Individual
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Individual
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Publication date
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Publication of EP0524566A1 publication Critical patent/EP0524566A1/en
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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
    • 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
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
    • E04B2001/848—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element

Definitions

  • the invention relates to a sound absorption plate, such as those used in particular to dampen the noise caused by machines in factory halls and other closed rooms.
  • a soundproof wall intended primarily for use on roads is known (BE-A-892 899), in which a damping layer is attached behind a front panel with downward-facing slats and at a distance from a retaining wall.
  • Such walls are primarily intended to act as a shield.
  • Their sound absorption capacity is relatively low, so that due to their high reflection values, they are not particularly suitable for use in closed rooms. In terms of design, too, they are more adapted for use outdoors.
  • the invention has for its object to improve the sound absorption ability of known soundproofing panels or walls and thus to provide a sound absorption panel which is also suitable for use in closed rooms.
  • the invention as characterized in the claims, not only creates sound absorption panels with generally very favorable absorption values, it also offers the possibility of adapting such panels to specific requirements. In addition, it specifies prefabricated elements from which sound absorption panels according to the invention can be produced particularly easily.
  • the sound absorption plate is preferably constructed from prefabricated plate elements which, for. B. rectangular, in particular square, or can also be triangular or hexagonal and which are usually arranged next to and on top of each other in a tile-like manner on an already existing or also for this purpose wall, so that they cover the wall without gaps.
  • the plate elements themselves can each be provided with a rear wall, in which case said wall is not required.
  • the sound absorption panel according to the invention can of course also be manufactured or cut on site, but the construction from prefabricated elements is particularly economical.
  • the plate element has a perforated plate 1 with a regular, for. B. square, grid-forming holes 2, each having a diameter of 3 - 20 mm and a distance of 8 - 30 mm from their nearest neighbors. It is made of hard material, preferably Plastic or metal.
  • a damping layer 3 made of mineral wool, foam, preferably open-pore, or other sound-absorbing material is attached on the perforated plate 1. Their thickness is between 5 and 50 mm. The damping layer 3 can be closed off on the back as well as on the front by acoustic paper.
  • the partition walls 4a, b are straight and intersect at the center of the plate element. They run parallel to its sides.
  • the partition walls can e.g. B. run diagonally or form a variety of patterns. They are preferably arranged in such a way that partition walls of adjacent plate elements adjoin one another at the edges thereof.
  • the subdivision significantly improves sound absorption. It has also been shown that the course of the absorption curve depends on the subdivision. In particular, it shifts to lower frequencies when the volumes of the absorption chambers are increased. This law can be used to adapt the properties of sound absorption panels according to the invention to the respective requirements.

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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)

Abstract

A panel element for constructing a sound-absorbing panel has a perforated plate (1) of metal or plastic with holes (2) of 3 to 20 mm in diameter, which are arranged in a square or other regular pattern at intervals of 8 to 30 mm, on which an insulating layer (3) of 5 to 50 mm in thickness of mineral wall or open-cell foam is fastened. To improve the sound absorption, the panel element is provided with dividing walls (4a, 4b) which run transversely to the plane of the panel, cross at the centre point of the panel element and are arranged in such a way that dividing walls of neighbouring panel elements adjoin one another. They divide an absorption space, between 50 and 300 mm deep, lying between the insulating layer (3) and a wall arranged behind the panel element, in absorption chambers of 300 to 1000 mm in diameter. <IMAGE>

Description

Die Erfindung betrifft eine Schallabsorptionsplatte, wie sie insbesondere zur Dämpfung des durch Maschinen verursachten Lärms in Fabrikshallen und anderen geschlossenen Räumen eingesetzt werden.The invention relates to a sound absorption plate, such as those used in particular to dampen the noise caused by machines in factory halls and other closed rooms.

Es ist eine allerdings vor allem zum Einsatz an Strassen gedachte Schallschutzwand bekannt (BE-A-892 899), bei welcher hinter einer Frontplatte mit nach unten weisenden Lamellen und mit Abstand vor einer Stützmauer eine Dämpfungsschicht angebracht ist. Derartige Wände sollen vor allem als Abschirmung wirken. Ihre Schallabsorptionsfähigkeit ist verhältnismässig gering, sodass sie sich wegen hoher Reflexionswerte besonders für die Verwendung in geschlossenen Räumen wenig eignen. Auch bezüglich der Bauart sind sie eher an den Einsatz in Aussenräumen angepasst.However, a soundproof wall intended primarily for use on roads is known (BE-A-892 899), in which a damping layer is attached behind a front panel with downward-facing slats and at a distance from a retaining wall. Such walls are primarily intended to act as a shield. Their sound absorption capacity is relatively low, so that due to their high reflection values, they are not particularly suitable for use in closed rooms. In terms of design, too, they are more adapted for use outdoors.

Der Erfindung liegt die Aufgabe zugrunde, die Schallabsorptionsfähigkeit bekannter Schallschutzplatten oder -wände zu verbessern und damit eine auch für den Einsatz in geschlossenen Räumen geeignete Schallabsorptionsplatte zu schaffen.The invention has for its object to improve the sound absorption ability of known soundproofing panels or walls and thus to provide a sound absorption panel which is also suitable for use in closed rooms.

Die Erfindung, wie sie in den Ansprüchen gekennzeichnet ist, schafft nicht nur Schallabsorptionsplatten mit allgemein sehr günstigen Absorptionswerten, sie bietet auch die Möglichkeit, solche Platten an bestimmte Anforderungen anzupassen. Ausserdem gibt sie vorgefertigte Elemente an, aus denen erfindungsgemässe Schallabsorptionsplatten besonders einfach hergestellt werden können.The invention, as characterized in the claims, not only creates sound absorption panels with generally very favorable absorption values, it also offers the possibility of adapting such panels to specific requirements. In addition, it specifies prefabricated elements from which sound absorption panels according to the invention can be produced particularly easily.

Im folgenden wird die Erfindung anhand von Zeichnungen, welche nur einen Ausführungsweg darstellen, näher erläutert. Es zeigen

Fig. 1a
eine Seitenansicht eines Plattenelements zum Aufbau einer erfindungsgemässen Schallabsorptionsplatte,
Fig. 1b
eine Rückansicht des Plattenelements nach Fig. 1a und
Fig. 2
das Resultat von Schallabsorptionsmessungen an einer erfindungsgemässen Schallabsorptionsplatte.
The invention is explained in more detail below with reference to drawings, which only represent one embodiment. Show it
Fig. 1a
2 shows a side view of a plate element for constructing a sound absorption plate according to the invention,
Fig. 1b
a rear view of the plate member of FIGS. 1a and
Fig. 2
the result of sound absorption measurements on a sound absorption plate according to the invention.

Die Schallabsorptionsplatte ist vorzugsweise aus vorgefertigten Plattenelementen aufgebaut, welche z. B. rechteckig, insbesondere quadratisch, oder auch drei- oder sechseckig sein können und welche gewöhnlich an einer schon bestehenden oder auch zu diesem Zweck errichteten Wand fliesenartig neben- und übereinander angeordnet sind, sodass sie die Wand lückenlos bedecken. Natürlich können auch die Plattenelemente selber jeweils mit einer Rückwand versehen sein, in welchem Fall die besagte Wand nicht erforderlich ist.The sound absorption plate is preferably constructed from prefabricated plate elements which, for. B. rectangular, in particular square, or can also be triangular or hexagonal and which are usually arranged next to and on top of each other in a tile-like manner on an already existing or also for this purpose wall, so that they cover the wall without gaps. Of course, the plate elements themselves can each be provided with a rear wall, in which case said wall is not required.

Die erfindungsgemässe Schallabsorptionsplatte kann selbstverständlich auch an Ort und Stelle gefertigt oder zugeschnitten werden, der Aufbau aus vorgefertigten Elementen ist jedoch besonders ökonomisch.The sound absorption panel according to the invention can of course also be manufactured or cut on site, but the construction from prefabricated elements is particularly economical.

Das Plattenelement weist eine Lochplatte 1 auf mit ein regelmässiges, z. B. quadratisches, Raster bildenden Löchern 2, welche jeweils einen Durchmesser von 3 - 20 mm und einen Abstand von 8 - 30 mm von ihren nächsten Nachbarn haben. Sie besteht aus hartem Material, vorzugsweise Kunststoff oder Metall. An der Lochplatte 1 ist eine Dämpfungsschicht 3 aus Mineralwolle, Schaumstoff, vorzugsweise offenporigem, oder anderem schallabsorbierendem Material befestigt. Ihre Dicke beträgt zwischen 5 und 50 mm. Die Dämpfungsschicht 3 kann auf der Rückseite wie auch auf der Vorderseite durch akustisches Papier abgeschlossen sein.The plate element has a perforated plate 1 with a regular, for. B. square, grid-forming holes 2, each having a diameter of 3 - 20 mm and a distance of 8 - 30 mm from their nearest neighbors. It is made of hard material, preferably Plastic or metal. On the perforated plate 1, a damping layer 3 made of mineral wool, foam, preferably open-pore, or other sound-absorbing material is attached. Their thickness is between 5 and 50 mm. The damping layer 3 can be closed off on the back as well as on the front by acoustic paper.

Daran schliessen quer zur Plattenebene verlaufende Unterteilungswände 4a,b aus hartem Material wie Kunststoff oder Metall an, welche den zwischen Dämpfungsschicht und Wand liegenden Absorptionsraum in Absorptionskammern mit einem maximalen Durchmesser von zwischen 300 und 1000 mm und einer Tiefe von 50 bis 300 mm unterteilen.This is followed by subdivision walls 4a, b made of hard material such as plastic or metal, which divide the absorption space between the damping layer and the wall into absorption chambers with a maximum diameter of between 300 and 1000 mm and a depth of 50 to 300 mm.

Die Unterteilungswände 4a,b sind gerade ausgebildet und kreuzen sich im Mittelpunkt des Plattenelements. Sie verlaufen parallel zu dessen Seiten.The partition walls 4a, b are straight and intersect at the center of the plate element. They run parallel to its sides.

Selbstverständlich sind auch andere Lösungen möglich. Die Unterteilungswände können z. B. diagonal verlaufen oder verschiedenste Muster bilden. Vorzugsweise sind sie so angeordnet, dass Unterteilungswände benachbarter Plattenelemente an den Rändern derselben aneinander anschliessen.Of course, other solutions are also possible. The partition walls can e.g. B. run diagonally or form a variety of patterns. They are preferably arranged in such a way that partition walls of adjacent plate elements adjoin one another at the edges thereof.

Durch die Unterteilung wird eine wesentliche Verbesserung der Schallabsorption erzielt. Es hat sich auch gezeigt, dass der Verlauf der Absorptionskurve von der Unterteilung abhängt. Insbesondere verschiebt sich dieselbe zu tieferen Frequenzen, wenn die Volumina der Absorptionskammern vergrössert werden. Diese Gesetzmässigkeit lässt sich dazu benutzen, die Eigenschaften erfindungsgemässer Schallabsorptionsplatten auf die jeweiligen Anforderungen abzustimmen.The subdivision significantly improves sound absorption. It has also been shown that the course of the absorption curve depends on the subdivision. In particular, it shifts to lower frequencies when the volumes of the absorption chambers are increased. This law can be used to adapt the properties of sound absorption panels according to the invention to the respective requirements.

Ein erfindungsgemässes quadratisches Plattenelement gemäss Fig. 1a,b von 200 mm Seitenlänge, mit einer Lochplatte 1 aus 0,8 mm dickem Aluminium, deren Löcher 2 jeweils einen Durchmesser von 4 mm aufweisen und ein quadratisches Raster bilden, bei dem die Mittelpunkte benachbarter Löcher einen Abstand von 15 mm aufweisen und bei welcher die Dämpfungsschicht 3 aus Mineralwolle besteht und 25 mm dick ist, während der Absorptionsraum eine Tiefe von 70 mm aufweist, erbrachte bei Messung im Rohr die in Fig. 2 dargestellte Absorptionskurve.A square plate element according to the invention according to Fig. 1a, b of 200 mm side length, with a perforated plate 1 made of 0.8 mm thick aluminum, the holes 2 each have a diameter of 4 mm and form a square grid, in which the centers of adjacent holes one Have a distance of 15 mm and at which the damping layer 3 consists of mineral wool and is 25 mm thick, while the absorption space has a depth of 70 mm, the measurement curve in the tube produced the absorption curve shown in FIG. 2.

Claims (12)

Schallabsorptionsplatte mit einer durchbrochenen Frontplatte aus hartem Material, hinter der eine Dämpfungsschicht (3) aus schallabsorbierendem Material angebracht ist, welche mit Abstand einer Wand vorgelagert ist, sodass hinter ihr ein Absorptionsraum frei bleibt, dadurch gekennzeichnet, dass der Absorptionsraum senkrecht zur Plattenebene in Absorptionskammern mit jeweils einem maximalen Durchmesser von höchstens 1000 mm unterteilt ist.Sound absorption plate with an openwork front plate made of hard material, behind which a damping layer (3) made of sound-absorbing material is attached, which is placed in front of a wall at a distance so that an absorption space remains free behind it, characterized in that the absorption space is perpendicular to the plate plane in absorption chambers is divided into a maximum diameter of at most 1000 mm. Schallabsorptionsplatte nach Anspruch 1, dadurch gekennzeichnet, dass die Absorptionskammern jeweils einen Mindestdurchmesser von 300 mm aufweisen.Sound absorption panel according to claim 1, characterized in that the absorption chambers each have a minimum diameter of 300 mm. Schallabsorptionsplatte nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Absorptionskammern jeweils eine Tiefe von zwischen 50 mm und 300 mm aufweisen.Sound absorption panel according to claim 1 or 2, characterized in that the absorption chambers each have a depth of between 50 mm and 300 mm. Schallabsorptionsplatte nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Absorptionskammern rechteckig ausgebildet sind.Sound absorption panel according to one of claims 1 to 3, characterized in that the absorption chambers are rectangular. Schallabsorptionsplatte nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass Dämpfungsschicht (3) eine Dicke von zwischen 5 mm und 50 mm aufweist.Sound absorption panel according to one of claims 1 to 4 , characterized in that the damping layer (3) has a thickness of between 5 mm and 50 mm. Schallabsorptionsplatte nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Dämpfungsschicht (3) aus Mineralwolle oder offenporigem Schaumstoff besteht.Sound absorption panel according to one of claims 1 to 5, characterized in that the damping layer (3) consists of mineral wool or open-cell foam. Schallabsorptionsplatte nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Frontplatte als Lochplatte (1) ausgebildet ist.Sound absorption plate according to one of claims 1 to 6, characterized in that the front plate is designed as a perforated plate (1). Schallabsorptionsplatte nach Anspruch 7, dadurch gekennzeichnet, dass die Löcher (2) jeweils einen Durchmesser von zwischen 3 mm und 20 mm aufweisen.Sound absorption panel according to claim 7, characterized in that the holes (2) each have a diameter of between 3 mm and 20 mm. Schallabsorptionsplatte nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass die Löcher (2) in einem Abstand von zwischen 8 mm und 30 mm regelmässig angeordnet sind.Sound absorption panel according to claim 7 or 8, characterized in that the holes (2) are regularly arranged at a distance of between 8 mm and 30 mm. Schallabsorptionsplatte nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, dass die Lochplatte (1) aus Kunststoff oder Metall besteht.Sound absorption plate according to one of claims 7 to 9, characterized in that the perforated plate (1) consists of plastic or metal. Plattenlement zum Aufbau einer Schallabsorptionsplatte nach einem der Ansprüche 1 bis 10 durch fliesenartige Anordnung mehrerer gleichartiger Plattenelemente, dadurch gekennzeichnet, dass es im Anschluss an die Dämpfungsschicht (3) derart quer zur Plattenebene verlaufende Unterteilungswände (4a, 4b) aufweist, dass Unterteilungswände benachbarter Plattenelemente aneinander anschliessen.Panel element for the construction of a sound absorption panel according to one of claims 1 to 10 by tile-like arrangement of several similar panel elements, characterized in that it has, after the damping layer (3), dividing walls (4a, 4b) which run transversely to the panel plane in such a way that dividing walls of adjacent panel elements adjoin one another connect. Plattenelement nach Anspruch 11, dadurch gekennzeichnet, dass es rechteckig ausgebildet ist und zwei gerade, einander in seinem Mittelpunkt kreuzende Unterteilungswände (4a, 4b) aufweist.Plate element according to claim 11, characterized in that it is rectangular and has two straight dividing walls (4a, 4b) crossing each other at its center.
EP92112326A 1991-07-24 1992-07-18 Sound absorbing panel Withdrawn EP0524566A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2211/91 1991-07-24
CH221191A CH683855A5 (en) 1991-07-24 1991-07-24 Sound absorbing plate.

Publications (1)

Publication Number Publication Date
EP0524566A1 true EP0524566A1 (en) 1993-01-27

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EP92112326A Withdrawn EP0524566A1 (en) 1991-07-24 1992-07-18 Sound absorbing panel

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2283803A (en) * 1993-11-09 1995-05-17 Marconi Gec Ltd Noise emission reduction
EP0742322A1 (en) * 1995-05-08 1996-11-13 Metzeler Schaum Gmbh Sound damping device
US6213721B1 (en) * 1993-11-09 2001-04-10 Thomson Marconi Sonar Limited Noise emission reduction
WO2001071116A1 (en) 2000-03-20 2001-09-27 Newmat, S.A. Flexible sheet fabrics for tensile structures, method for making same, tensile false ceilings comprising same
WO2003008237A1 (en) * 2001-07-17 2003-01-30 Faist Automotive Gmbh & Co. Kg Soundproofing element
FR2913703A1 (en) * 2007-03-15 2008-09-19 Arpegy Sarl ACOUSTIC CORRECTION PANEL AND CEILING EQUIPPED WITH SUCH A PANEL
EP2784233A1 (en) 2013-03-25 2014-10-01 Organoid Technologies GmbH Acoustic panel

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202011005671U1 (en) 2011-04-28 2012-07-31 Markus Brühwiler Sound absorption system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE857271C (en) * 1949-07-15 1952-11-27 Gyproc Products Ltd Sound-absorbing cladding panel
US3166149A (en) * 1965-01-19 Damped-resonator acoustical panels
DE1264021B (en) * 1962-12-01 1968-03-21 Gruenzweig & Hartmann A G Sound absorbing wall
BE892899A (en) * 1982-04-19 1982-08-16 Cbr Cementbedrijven Nv Sectional concrete acoustic screen - has quadrilateral self supporting solid sections with supports for adjacent sections

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3166149A (en) * 1965-01-19 Damped-resonator acoustical panels
DE857271C (en) * 1949-07-15 1952-11-27 Gyproc Products Ltd Sound-absorbing cladding panel
DE1264021B (en) * 1962-12-01 1968-03-21 Gruenzweig & Hartmann A G Sound absorbing wall
BE892899A (en) * 1982-04-19 1982-08-16 Cbr Cementbedrijven Nv Sectional concrete acoustic screen - has quadrilateral self supporting solid sections with supports for adjacent sections

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2283803A (en) * 1993-11-09 1995-05-17 Marconi Gec Ltd Noise emission reduction
GB2283803B (en) * 1993-11-09 1997-05-14 Marconi Gec Ltd Noise emission reduction
US6213721B1 (en) * 1993-11-09 2001-04-10 Thomson Marconi Sonar Limited Noise emission reduction
EP0742322A1 (en) * 1995-05-08 1996-11-13 Metzeler Schaum Gmbh Sound damping device
WO2001071116A1 (en) 2000-03-20 2001-09-27 Newmat, S.A. Flexible sheet fabrics for tensile structures, method for making same, tensile false ceilings comprising same
WO2003008237A1 (en) * 2001-07-17 2003-01-30 Faist Automotive Gmbh & Co. Kg Soundproofing element
FR2913703A1 (en) * 2007-03-15 2008-09-19 Arpegy Sarl ACOUSTIC CORRECTION PANEL AND CEILING EQUIPPED WITH SUCH A PANEL
WO2008129174A1 (en) * 2007-03-15 2008-10-30 Arpegy Panel for correcting acoustic properties and ceiling equipped with such a panel
EP2784233A1 (en) 2013-03-25 2014-10-01 Organoid Technologies GmbH Acoustic panel

Also Published As

Publication number Publication date
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