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ES2391336B1 - ACOUSTIC PANEL AND ACOUSTIC CLOSURE. - Google Patents

ACOUSTIC PANEL AND ACOUSTIC CLOSURE. Download PDF

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Publication number
ES2391336B1
ES2391336B1 ES201031627A ES201031627A ES2391336B1 ES 2391336 B1 ES2391336 B1 ES 2391336B1 ES 201031627 A ES201031627 A ES 201031627A ES 201031627 A ES201031627 A ES 201031627A ES 2391336 B1 ES2391336 B1 ES 2391336B1
Authority
ES
Spain
Prior art keywords
grooves
panel
acoustic
rear face
face
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.)
Expired - Fee Related
Application number
ES201031627A
Other languages
Spanish (es)
Other versions
ES2391336A1 (en
Inventor
Joan Rivas Delgado
Jesús URIOL CHAVARRIGA
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.)
Maderclass Sa
Original Assignee
Alims 2000 S L
ALIMS 2000 SL
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 Alims 2000 S L, ALIMS 2000 SL filed Critical Alims 2000 S L
Priority to ES201031627A priority Critical patent/ES2391336B1/en
Priority to ES201390047A priority patent/ES2421461B1/en
Priority to PCT/IB2011/054949 priority patent/WO2012059899A2/en
Publication of ES2391336A1 publication Critical patent/ES2391336A1/en
Application granted granted Critical
Publication of ES2391336B1 publication Critical patent/ES2391336B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82Heat, 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
    • E04B1/84Sound-absorbing elements
    • E04B1/86Sound-absorbing elements slab-shaped
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82Heat, 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
    • E04B1/84Sound-absorbing elements
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82Heat, 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
    • E04B1/84Sound-absorbing elements
    • E04B2001/8457Solid slabs or blocks
    • E04B2001/8476Solid slabs or blocks with acoustical cavities, with or without acoustical filling
    • E04B2001/848Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element
    • E04B2001/849Groove or slot type openings
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82Heat, 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
    • E04B1/84Sound-absorbing elements
    • E04B2001/8457Solid slabs or blocks
    • E04B2001/8476Solid slabs or blocks with acoustical cavities, with or without acoustical filling
    • E04B2001/848Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element
    • E04B2001/8495Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element the openings going through from one face to the other face of the element

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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

Panel acústico y cerramiento acústico.#Comprende una pluralidad de ranuras (2) en la cara frontal (1a) y una pluralidad de ranuras (3) en la cara posterior (1b), determinando las ranuras (3) una pluralidad de perforaciones (4) en el panel (1), y se caracteriza por el hecho de que dichas ranuras (2) presentan una anchura comprendida entre 2 y 4 mm, una profundidad comprendida entre 5 y 11 mm, y están separadas una distancia comprendida entre 9 y 14 mm, y dichas ranuras (3) presentan una anchura comprendida entre 8 y 12 mm y una profundidad comprendida entre 5 y 11 mm, y por el hecho de que el área de intersección de las ranuras (3) determina una tasa de perforación del panel 1 igual o inferior al 15%, poseyendo cada una de las ranuras (3) de la cara posterior (1b) un porcentaje de superficie libre de perforaciones (4) igual o superior al 75%, de modo que dichas ranuras (3) de la cara posterior (1b) configuran cavidades (5) de absorción. Acoustic panel and acoustic enclosure # Includes a plurality of grooves (2) on the front face (1a) and a plurality of grooves (3) on the rear face (1b), the grooves (3) determining a plurality of perforations (4) ) on the panel (1), and is characterized by the fact that said grooves (2) have a width between 2 and 4 mm, a depth between 5 and 11 mm, and a distance between 9 and 14 are separated mm, and said grooves (3) have a width between 8 and 12 mm and a depth between 5 and 11 mm, and by the fact that the intersection area of the grooves (3) determines a perforation rate of the panel 1 equal to or less than 15%, each of the grooves (3) of the rear face (1b) having a percentage of surface free of perforations (4) equal to or greater than 75%, so that said grooves (3) of the rear face (1b) configure cavities (5) for absorption.

Description

La presente invención se refiere a un panel acústico absorbente y a un cerramiento acústico que comprende dicho panel acústico. The present invention relates to an absorbent acoustic panel and an acoustic enclosure comprising said acoustic panel.

ANTECEDENTES DE LA INVENCIÓN BACKGROUND OF THE INVENTION

Son conocidos paneles acústicos que comprenden una pluralidad de perforaciones para absorber el sonido, que se extienden desde la cara visible de los Acoustic panels are known which comprise a plurality of perforations to absorb the sound, which extend from the visible face of the

1 O paneles hasta la cara posterior. Estos paneles van montados sobre perfiles de soporte que están fijados a los techos o paredes determinando una cámara de aire que alberga por detrás del panel un material absorbente como la lana de roca. 1 O panels to the back side. These panels are mounted on support profiles that are fixed to the ceilings or walls determining an air chamber that houses behind the panel an absorbent material such as rock wool.

El coeficiente de absorción acústica del panel varía en función del porcentaje de perforación, siendo este coeficiente superior cuanto mayor es la 15 superficie perforada del perfil. The acoustic absorption coefficient of the panel varies depending on the percentage of perforation, this coefficient being higher the larger the perforated surface of the profile.

Los cerramientos acústicos actuales que incluyen paneles acústicos absorbentes como los descritos requieren de la presencia de una cámara de aire para obtener un coeficiente de absorción acústica aceptable. Current acoustic enclosures that include absorbent acoustic panels such as those described require the presence of an air chamber to obtain an acceptable acoustic absorption coefficient.

Sin embargo, la provisión de la mencionada cámara de aire presenta el 2 O inconveniente de que comporta una pérdida de espacio útil del recinto en el que se lleva a cabo el cerramiento acústico. However, the provision of the aforementioned air chamber has the disadvantage that it entails a loss of useful space of the enclosure in which the acoustic enclosure is carried out.

Por otro lado, la fijación de los paneles en los mencionados cerramientos acústicos resulta laboriosa, puesto que debe de realizarse evitando que las perforaciones sean taponadas por los perfiles de soporte para no disminuir la eficacia On the other hand, the fixation of the panels in the mentioned acoustic enclosures is laborious, since it must be done avoiding that the perforations are plugged by the support profiles so as not to diminish the effectiveness

2 5 acústica. Además, cuando el grado de absorción acústica que se desea es elevado, debe de recurrirse a paneles con tasas de perforación elevadas que hacen que el panel resulte muy frágil. 2 5 acoustic. In addition, when the desired degree of sound absorption is high, panels with high perforation rates should be used which make the panel very fragile.

3 O DESCRIPCIÓN DE LA INVENCIÓN 3 OR DESCRIPTION OF THE INVENTION

El objetivo de la presente invención es resolver los inconvenientes mencionados, desarrollando un panel y un cerramiento acústico que presentan las ventajas que se describirán a continuación. The objective of the present invention is to solve the aforementioned drawbacks, developing a panel and an acoustic enclosure that have the advantages that will be described below.

De acuerdo con este objetivo, según un pnmer aspecto la presente In accordance with this objective, according to a pnmer aspect this

invención proporciona un panel acústico absorbente que comprende una pluralidad de ranuras en la cara frontal y una pluralidad de ranuras en la cara posterior, determinando las ranuras de la cara posterior una pluralidad de perforaciones en el panel, en las áreas de intersección con las ranuras de la cara frontal, caracterizándose el panel por el The invention provides an absorbent acoustic panel comprising a plurality of grooves in the front face and a plurality of grooves in the rear face, the grooves of the rear face determining a plurality of perforations in the panel, in the areas of intersection with the grooves of the front face, the panel being characterized by the

5 hecho de que; 5 fact that;

--
dichas ranuras de la cara frontal presentan una anchura comprendida entre 2 y 4 mm, una profundidad comprendida entre 5 y 11 mm, y están separadas una distancia comprendida entre 9 y 14 mm, y said grooves of the front face have a width between 2 and 4 mm, a depth between 5 and 11 mm, and are separated by a distance between 9 and 14 mm, and

--
dichas ranuras de la cara posterior presentan una anchura comprendida said grooves of the back face have a width comprised

1 O entre 8 y 12 mm y una profundidad comprendida entre 5 y 11 mm, y por el hecho de que; -el área de intersección de las ranuras de la cara posterior con las ranuras 1 O between 8 and 12 mm and a depth between 5 and 11 mm, and by the fact that; -the area of intersection of the grooves of the back face with the grooves

de la cara frontal determina una tasa de perforación del panel igual o inferior al 15%, poseyendo cada una de las ranuras de la cara posterior un porcentaje de superficie libre 15 de perforaciones igual o superior al 75%, de modo que dichas ranuras de la cara posterior configuran cavidades de absorción de sonido en el propio panel. of the front face determines a perforation rate of the panel equal to or less than 15%, each of the grooves of the back face having a percentage of perforation free surface 15 equal to or greater than 75%, so that said grooves of the rear face set up sound absorption cavities in the panel itself.

Sorprendentemente, se ha observado que el área no perforada de las ranuras de la cara posterior del panel determina cavidades en el propio panel que aportan propiedades absorbentes. Gracias a ello, se consigue un panel muy eficaz Surprisingly, it has been observed that the unperforated area of the grooves of the rear panel face determines cavities in the panel itself that provide absorbent properties. Thanks to this, a very effective panel is achieved

2 O desde el punto de vista acústico sin necesidad de recurrir a una tasa de perforación elevada, por lo que, además, el panel es muy resistente y rápido de fabricar. De acuerdo con el mismo objetivo, según un segundo aspecto, la presente invención proporciona un cerramiento acústico desprovisto de cámara de aire que incluye el panel reivindicado. 2 Or from the acoustic point of view without the need to resort to a high drilling rate, so that, in addition, the panel is very resistant and quick to manufacture. According to the same objective, according to a second aspect, the present invention provides an acoustic enclosure devoid of an air chamber that includes the claimed panel.

25 Sorprendentemente, se ha observado que el panel acústico de la presente invención garantiza una buena absorción acústica sin necesidad de recurrir a una cámara de aire, por lo que dicho panel puede montarse directamente sobre una pared o techo sin perder eficacia acústica. Surprisingly, it has been observed that the acoustic panel of the present invention guarantees a good acoustic absorption without resorting to an air chamber, whereby said panel can be mounted directly on a wall or ceiling without losing acoustic efficiency.

Gracias a ello, se proporciona un cerramiento acústico desprovisto de 3 O cámara de aire que resulta muy útil para instalar en recintos de reducidas dimensiones en los que hasta ahora no era posible instalar cerramiento acústico alguno. Thanks to this, an acoustic enclosure devoid of 3 O air chamber is provided, which is very useful for installation in small enclosures in which until now it was not possible to install any acoustic enclosure.

Según una realización preferida, preferiblemente las ranuras de la cara posterior poseen una superficie libre de perforaciones igual o superior al 82% y, ventajosamente, las ranuras de la cara posterior se extienden longitudinalmente en la According to a preferred embodiment, preferably the grooves of the rear face have a perforation-free surface equal to or greater than 82% and, advantageously, the grooves of the rear face extend longitudinally in the


3 5 cara posterior del panel en forma de ondas sinusoidales.

3 5 back side of the panel in the form of sine waves.

Se ha observado, que las ranuras en forma de ondas sinusoidales permiten configurar unas cavidades de absorción en el panel que resultan muy eficaces desde el punto de vista acústico. It has been observed that the grooves in the form of sine waves allow to configure absorption cavities in the panel that are very effective from the acoustic point of view.

Ventajosamente, dichas ondas sinusoidales son continuas. Sin embargo, 5 alternativamente, dichas ondas sinusoidales pueden ser discontinuas. De este modo, el panel gana en resistencia. Advantageously, said sine waves are continuous. However, alternatively, said sine waves can be discontinuous. In this way, the panel gains in resistance.

Preferentemente, dichas ranuras en forma de ondas sinusoidales están dispuestas sustancialmente paralelas y separadas entre sí una distancia ( x) comprendida entre 35 mm y 70 mm, siendo esta distancia (x) la distancia entre senos Preferably, said grooves in the form of sine waves are arranged substantially parallel and separated from each other by a distance (x) between 35 mm and 70 mm, this distance (x) being the distance between breasts

1 O o crestas de dos ondas contiguas. 1 O or crests of two contiguous waves.

Otra vez preferentemente, dichas ondas sinusoidales presentan una longitud de onda comprendida entre 30 mm y 50 mm y una amplitud de onda comprendida entre 40 mm y 60 mm. Again preferably, said sine waves have a wavelength between 30 mm and 50 mm and a wavelength between 40 mm and 60 mm.

Ventajosamente, la profundidad de las ranuras de la cara posterior varia a Advantageously, the depth of the grooves of the rear face varies from

15 lo largo de la longitud del panel de forma complementaria con la profundidad de las ranuras de la cara frontal, de modo que se obtiene un plano ondulado en el interior del panel. 15 along the length of the panel in addition to the depth of the grooves of the front face, so that a wavy plane is obtained inside the panel.

Este plano interior ondulado mejora todavía más la eficacia acústica del panel. 20 Otra vez ventajosamente, las ranuras de la cara frontal están practicadas en una capa de material ignifugo, preferiblemente, un material que incluye magnesio. This wavy interior plane further improves the acoustic efficiency of the panel. Again advantageously, the grooves of the front face are made of a layer of flame retardant material, preferably a material that includes magnesium.

BREVE DESCRIPCIÓN DE LOS DIBUJOS BRIEF DESCRIPTION OF THE DRAWINGS

2 5 Para mayor comprensión de cuanto se ha expuesto se acompañan unos dibujos en los que, esquemáticamente y sólo a título de ejemplo no limitativo, se representa un caso práctico de realización. 2 5 For a better understanding of what has been exposed, some drawings are attached in which, schematically and only by way of non-limiting example, a practical case of realization is represented.

En dichos dibujos, la figura 1 muestra una vista en planta del panel acústico por la cara vista 3 O que incluye ranuras frontales. la figura 2 muestra una vista en planta del panel acústico por la cara oculta In said drawings, Figure 1 shows a plan view of the acoustic panel from the face 3O which includes front grooves. Figure 2 shows a plan view of the acoustic panel by the hidden face

que incluye ranuras posteriores en forma de ondas sinusoidales. la figura 3 muestra una sección de la figura l. la figura 4 muestra una vista en perspectiva del panel por su cara oculta. which includes posterior grooves in the form of sine waves. Figure 3 shows a section of Figure 1. Figure 4 shows a perspective view of the panel by its hidden face.


la figura 5 muestra una vista en perspectiva del panel por su cara vista.

Figure 5 shows a perspective view of the panel from its face.

la figura 6 muestra una vista en planta de una realización del panel que incluye ranuras posteriores en forma de ondas sinusoidales discontinuas. Figure 6 shows a plan view of an embodiment of the panel that includes posterior grooves in the form of discontinuous sine waves.

la figura 7 es una representación gráfica del coeficiente de absorción acústica práctico en función de la frecuencia de sonido aplicada a un cerramiento 5 acústico con cámara de aire, que incluye los paneles de la realización de las figuras 1 a Figure 7 is a graphic representation of the practical acoustic absorption coefficient as a function of the sound frequency applied to an acoustic enclosure 5 with air chamber, which includes the panels of the embodiment of Figures 1 a

5. 5.

la figura 8 es una representación gráfica del coeficiente de absorción acústica práctico en función de la frecuencia de sonido aplicada a un cerramiento acústico desprovisto de cámara de aire, que incluye los paneles de la realización de las Figure 8 is a graphical representation of the practical acoustic absorption coefficient as a function of the sound frequency applied to an acoustic enclosure devoid of an air chamber, which includes the panels for the realization of the

1 O figuras 1 a 5. 1 or figures 1 to 5.

DESCRIPCIÓN DE UNA REALIZACIÓN PREFERIDA DESCRIPTION OF A PREFERRED EMBODIMENT

A continuación se describe una realización preferida del panel de la 15 presente invención que incluye ranuras 3 en la cara posterior en forma de ondas sinusoidales. Next, a preferred embodiment of the panel of the present invention is described which includes grooves 3 on the rear face in the form of sine waves.

Tal y como muestran las figuras, el panel 1 de la presente invención incluye una pluralidad de ranuras 2 frontales que se extienden longitudinalmente en la cara frontal 1 a, y una pluralidad de ranuras 3 posteriores que se extienden también As the figures show, the panel 1 of the present invention includes a plurality of front grooves 2 that extend longitudinally on the front face 1 a, and a plurality of rear grooves 3 that also extend

2 O longitudinalmente en la cara posterior 1 b del panel 1, en forma de ondas sinusoidales. Las áreas de intersección de las ranuras 3 posteriores con las ranuras 2 frontales determinan una pluralidad de perforaciones 4 destinadas a absorber la energía acústica. Sin embargo, tal y como se ha descrito, en el panel 1 de la presente 2 Or longitudinally on the rear face 1 b of panel 1, in the form of sine waves. The intersection areas of the rear grooves 3 with the front grooves 2 determine a plurality of perforations 4 intended to absorb acoustic energy. However, as described, in panel 1 of this

2 5 invención el área perforada nunca supera el 15% de la superficie total del panel 1, poseyendo cada una de las ranuras 3 de la cara posterior un porcentaje de superficie libre de perforaciones igual o superior al 75%, de modo que dichas ranuras de la cara posterior configuran cavidades 5 de absorción de sonido en el propio panel. In the invention, the perforated area never exceeds 15% of the total surface of the panel 1, each of the grooves 3 of the rear face having a percentage of perforation-free surface equal to or greater than 75%, so that said grooves of the rear face configure sound absorption cavities 5 in the panel itself.

Gracias a ello, el panel 1 de la presente invención es muy eficaz desde el 3 O punto de vista acústico sin necesidad de recurrir a una tasa de perforación elevada, por lo que es muy resistente y rápido de fabricar. Thanks to this, the panel 1 of the present invention is very effective from the acoustic 3 O point of view without resorting to a high perforation rate, so it is very resistant and quick to manufacture.

Otra ventaja del panel 1 de la presente invención radica en el hecho de que garantiza una buena absorción acústica sin necesidad de recurrir a una cámara de aire, por lo que dicho panel 1 puede montarse directamente sobre una pared o techo sin Another advantage of the panel 1 of the present invention lies in the fact that it guarantees a good sound absorption without resorting to an air chamber, whereby said panel 1 can be mounted directly on a wall or ceiling without


3 5 perder eficacia.

3 5 lose effectiveness.

Gracias a ello, se proporciOna un cerramiento acústico desprovisto de cámara de aire que resulta muy útil para instalar en recintos de reducidas dimensiones en los que hasta ahora no era posible instalar cerramiento acústico alguno. Thanks to this, an acoustic enclosure devoid of an air chamber was provided, which is very useful for installation in small enclosures in which until now it was not possible to install any acoustic enclosure.

A continuación se describe un ensayo comparativo de absorción acústica 5 en sala reverberante según la norma UNE-EN ISO 354:2004, de una muestra de paneles 1 de la presente invención montados con y sin cámara de aire. A comparative acoustic absorption test 5 in reverberant room according to the UNE-EN ISO 354: 2004 standard of a sample of panels 1 of the present invention mounted with and without an air chamber is described below.

En el ensayo realizado los paneles 1 están compuestos de tablero aglomerado de fibras de densidad media (DM) de 16 mm de espesor, recubiertos de una chapa de bambú de 1 mm por su cara 1 a frontal y un velo negro autoadhesivo de In the test carried out, the panels 1 are composed of 16 mm thick medium density fiberboard (DM) chipboard, covered with a 1 mm bamboo sheet on its front face 1 and a self-adhesive black veil of

1 O fibra de vidrio por su cara 1 b posterior. Los paneles ensayados son los que se muestran en las figuras 1 a 5 adjuntas. Estos paneles 1 presentan unas ranuras 2 frontales con una anchura de 3,2 mm, una profundidad de 9 mm, las cuales están separadas unas de otras una distancia de 11,7 mm. Las ranuras 3 posteriores, en forma de ondas continuas, tienen una 1 O fiberglass on its face 1 b back. The panels tested are those shown in the attached figures 1 to 5. These panels 1 have front slots 2 with a width of 3.2 mm, a depth of 9 mm, which are separated from each other a distance of 11.7 mm. The rear 3 slots, in the form of continuous waves, have a

15 anchura y profundidad de 8 mm, una longitud de onda de 43,3 mm, una amplitud de onda de 49,6 mm, y están separadas unas de otras una distancia de 38 mm, siendo esta distancia la distancia (x) entre senos o crestas de dos ondas contiguas. La tasa de perforación de los paneles 1 ensayados es del 10%, poseyendo las ranuras 3 posteriores un porcentaje de superficie sin perforaciones del 76%. 15 width and depth of 8 mm, a wavelength of 43.3 mm, a wavelength of 49.6 mm, and are separated from each other a distance of 38 mm, this distance being the distance (x) between breasts or crests of two contiguous waves. The perforation rate of the panels 1 tested is 10%, with the subsequent grooves 3 having a percentage of surface area without perforations of 76%.

20 Los paneles 1 van montados sobre rastreles de madera de 40 mm que crean el espacio suficiente para albergar una lana de roca del mismo espesor y densidad de aproximadamente 40 Kg/m3. 20 Panels 1 are mounted on 40 mm wooden battens that create enough space to house a rock wool of the same thickness and density of approximately 40 Kg / m3.

El ensayo se ha realizado con los paneles 1 montados en dos configuraciones distintas: 2 5 -Directamente sobre una superficie reflectante con una capa de lana mineral de 40 mm de espesor (ensayo sin cámara aire). Con una cámara de aire de 40 cm de profundidad con una capa de lana mineral de 40 mm de espesor (ensayo con cámara de aire). En el ensayo sin cámara de aire, los paneles 1 se han colocado The test was carried out with panels 1 mounted in two different configurations: 2 5 -Directly on a reflective surface with a layer of mineral wool 40 mm thick (test without air chamber). With an air chamber 40 cm deep with a layer of mineral wool 40 mm thick (air chamber test). In the test without an air chamber, panels 1 have been placed

3 O directamente sobre el suelo de la sala de ensayo sellando los laterales de la muestra entera mediante un marco perimetral reflectante de madera, con objeto de impedir el paso de la energía acústica por los lados de la muestra y que actúe sólo la cara supenor. En el ensayo con cámara de aire, los paneles 1 se han colocado sobre unos 3 Or directly on the floor of the test room by sealing the sides of the entire sample by means of a reflective wooden perimeter frame, in order to prevent the passage of acoustic energy through the sides of the sample and that only the upper face acts. In the test with air chamber, panels 1 have been placed on


3 5 soportes para crear una cámara de 40 cm de profundidad entre la lana de roca y el

3 5 brackets to create a 40 cm deep chamber between the rock wool and the

suelo de la sala de ensayo. Igualmente, se han sellado los laterales de la muestra mediante un marco perimetral reflectante de madera, con objeto de impedir el paso de la energía acústica por los lados de la muestra y que actúe sólo la cara superior. floor of the rehearsal room. Likewise, the sides of the sample have been sealed by a reflective wooden perimeter frame, in order to prevent the passage of acoustic energy through the sides of the sample and that only the upper face acts.

Las mediciones realizadas han permitido calcular el coeficiente de absorción acústica práctico ocP y el coeficiente de absorción acústica ponderado ocw de los paneles 1, así como asignar una clase de absorción acústica a los paneles 1 (ver resultados adjuntos y figuras 7 y 8). The measurements made have allowed to calculate the practical acoustic absorption coefficient ocP and the weighted acoustic absorption coefficient ocw of panels 1, as well as assigning a sound absorption class to panels 1 (see attached results and figures 7 and 8).

RESULTADOS DEL ENSAYO CON CÁMARA CHAMBER TEST RESULTS

Coef. de absorción acústica práctico, ttp Coef absorption practical acoustics, ttp

Free. (Hz) Free (Hz)
CXp CXp

125 125
0,60 0.60

250 250
0,75 0.75

500 500
0,80 0.80

1000 1000
0190 0190

2000 2000
0185 0185

4000 4000
0,75 0.75

1 one
~deabs sonrllquot;a ponder.rdo (a .J 0,85 ~ deabs sonrllquot; a ponder.rdo (a .J 0.85

1 one
Fmma -- Fmma -

1 one
Cfasea,. B {0 ..80 a 0.85} Cfasea ,. B {0 ..80 to 0.85}

RESULTADOS DEL ENSAYO SIN CÁMARA CHAMBER-FREE TEST RESULTS

Coef. de absorción acústica práctico1 Coef Practical sound absorption1

a11 a11

Free. (Hz) Free (Hz)
CXp CXp

125 125
0,20 0.20

250 250
0,55 0.55

500 500
0,95 0.95

1000 1000
0,95 0.95

2000 2000
0,70 0.70

4000 4000
0,65 0.65

~deabs~~(aw} ~ deabs ~~ (aw}

0,.750, .75


1

one

foJma foJma

e (0.60 a 0.75)e (0.60 to 0.75)

Cli:n!e«w Cli: n! E «w

Claims (8)

REIVINDICACIONES l. Panel (1) acústico absorbente que comprende una pluralidad de ranuras l. Acoustic absorbent panel (1) comprising a plurality of grooves (2) en la cara frontal (la) y una pluralidad de ranuras (3) en la cara posterior (lb), 5 determinando las ranuras (3) de la cara posterior ( 1 b) una pluralidad de perforaciones (2) on the front face (la) and a plurality of grooves (3) on the rear face (lb), 5 determining the grooves (3) of the rear face (1 b) a plurality of perforations (4) en el panel (1), en las áreas de intersección con las ranuras (2) de la cara frontal (la), caracterizado por el hecho de que; -dichas ranuras (2) de la cara frontal (la) presentan una anchura comprendida entre 2 y 4 mm, una profundidad comprendida entre 5 y 11 mm, y están 1 O separadas una distancia comprendida entre 9 y 14 mm, y -dichas ranuras (3) de la cara posterior (1 b) presentan una anchura (4) in the panel (1), in the areas of intersection with the grooves (2) of the front face (the), characterized by the fact that; - said grooves (2) of the front face (the) have a width between 2 and 4 mm, a depth between 5 and 11 mm, and are separated by a distance between 9 and 14 mm, and - said grooves (3) of the rear face (1 b) have a width comprendida entre 8 y 12 mm y una profundidad comprendida entre 5 y 11 mm, y por el hecho de que; -el área de intersección de las ranuras (3) de la cara posterior ( 1 b) con las between 8 and 12 mm and a depth between 5 and 11 mm, and by the fact that; -the area of intersection of the grooves (3) of the rear face (1 b) with the 15 ranuras (2) de la cara frontal (la) determina una tasa de perforación del panell igual o inferior al 15%, poseyendo cada una de las ranuras (3) de la cara posterior (lb) un porcentaje de superficie libre de perforaciones ( 4) igual o superior al 75%, de modo que dichas ranuras (3) de la cara posterior (1 b) configuran cavidades (5) de absorción de sonido en el propio panel (1 ). 15 grooves (2) of the front face (la) determines a perforation rate of the panell equal to or less than 15%, each of the grooves (3) of the back face (lb) having a percentage of surface free of perforations ( 4) equal to or greater than 75%, so that said slots (3) on the rear face (1 b) configure sound absorption cavities (5) on the panel itself (1). 2. Panel según la reivindicación 1, en el que dichas ranuras (3) de la cara posterior (lb) se extienden longitudinalmente en la cara posterior (lb) del panel (1) en forma de ondas sinusoidales. 2. Panel according to claim 1, wherein said grooves (3) of the rear face (lb) extend longitudinally on the rear face (lb) of the panel (1) in the form of sine waves. 25 3. Panel según la reivindicación 2, en el que dichas ondas sinusoidales son continuas. 3. Panel according to claim 2, wherein said sine waves are continuous. 4. Panel según la reivindicación 2, en el que dichas ondas sinusoidales son 4. Panel according to claim 2, wherein said sine waves are discontinuas. 30 discontinuous 30
5. 5.
Panel según cualquiera de las reivindicaciones 2 a 4, en el que dichas ranuras (3) en forma de ondas sinusoidales están dispuestas sustancialmente paralelas y separadas entre sí una distancia (x) comprendida entre 35 mm y 70 mm, siendo esta distancia (x) la distancia entre senos o crestas de dos ondas contiguaso Panel according to any of claims 2 to 4, wherein said grooves (3) in the form of sine waves are arranged substantially parallel and separated from each other a distance (x) between 35 mm and 70 mm, this distance (x) being the distance between breasts or crests of two contiguous waves
6. 6.
Panel 1 según cualquiera de las reivindicaciones 2 a 5, en el que las ondas sinusoidales que determinan dichas ranuras (3) presentan una longitud de onda comprendida entre 30 mm y 50 mm y una amplitud de onda comprendida entre 40 mm y60mm. Panel 1 according to any of claims 2 to 5, wherein the sine waves determining said grooves (3) have a wavelength between 30 mm and 50 mm and a wavelength between 40 mm and 60 mm.
7. Panel según cualquiera de las reivindicaciones anteriores, en el que la profundidad de las ranuras (3) de la cara posterior (1 b) varía a lo largo de la longitud del panel (1) de forma complementaria con la profundidad de las ranuras (2) de la cara frontal (la), de modo que se obtiene un plano ondulado en el interior del panel (1). 7. Panel according to any of the preceding claims, wherein the depth of the grooves (3) of the rear face (1 b) varies along the length of the panel (1) in addition to the depth of the grooves (2) of the front face (the), so that a wavy plane is obtained inside the panel (1). 8. Panel 1 según cualquiera de las reivindicaciones anteriores en el que las ranuras (2) de la cara frontal (la) están practicadas en una capa de material ignifugo, preferiblemente, un material que incluye magnesio. 8. Panel 1 according to any of the preceding claims wherein the grooves (2) of the front face (the) are made of a layer of flame retardant material, preferably a material that includes magnesium. 15 9. Cerramiento acústico que comprende un panel (1) acústico según cualquiera de las reivindicaciones anteriores, caracterizado por el hecho de que está desprovisto de cámara de aire. 15. Acoustic enclosure comprising an acoustic panel (1) according to any of the preceding claims, characterized in that it is devoid of an air chamber. 10. Cerramiento según la reivindicación 9, que comprende un material 10. Enclosure according to claim 9, comprising a material
2 O acústico absorbente entre dicho panel (1) acústico y una pared o techo sobre el que está montado el panel (1) acústico.

2 Or absorbent acoustic between said acoustic panel (1) and a wall or ceiling on which the acoustic panel (1) is mounted.
ES201031627A 2010-11-05 2010-11-05 ACOUSTIC PANEL AND ACOUSTIC CLOSURE. Expired - Fee Related ES2391336B1 (en)

Priority Applications (3)

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ES201031627A ES2391336B1 (en) 2010-11-05 2010-11-05 ACOUSTIC PANEL AND ACOUSTIC CLOSURE.
ES201390047A ES2421461B1 (en) 2010-11-05 2011-11-07 ACOUSTIC PANEL AND ACOUSTIC CLOSURE
PCT/IB2011/054949 WO2012059899A2 (en) 2010-11-05 2011-11-07 Acoustic panel and acoustic enclosure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES201031627A ES2391336B1 (en) 2010-11-05 2010-11-05 ACOUSTIC PANEL AND ACOUSTIC CLOSURE.

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PL3754128T3 (en) 2019-06-18 2022-06-06 SWISS KRONO Tec AG Acoustic panel with offset grooves
CN110685816A (en) * 2019-10-31 2020-01-14 玉柴联合动力股份有限公司 Marine engine protective cover and manufacturing method thereof

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB924960A (en) * 1960-03-02 1963-05-01 Howard Arnold Garrood Improvements in acoustic panels
CH683112A5 (en) * 1991-03-20 1994-01-14 Arthur Fries A disc-shaped element, in particular for sound absorption systems, and sound absorber system.
DE29805952U1 (en) * 1998-04-01 1998-07-02 Lech, Jerzy, Dipl.-Ing., 52078 Aachen Soundproofing interior or exterior wall cladding
ITBO20020216A1 (en) * 2002-04-22 2003-10-22 Pream SOUND ABSORBING PANEL AND RELATED METHOD OF REALIZATION
AT413121B (en) * 2004-02-24 2005-11-15 Lenz Nenning Gmbh MUFFLING PANEL
DE202004016448U1 (en) * 2004-10-23 2004-12-23 Rießler, Markus Sound insulating panel has first slot structure in front side and second slot structure in rear side, and rear side along panel edge has encompassing edge section not broken by second slot structure
US20070193175A1 (en) * 2006-02-21 2007-08-23 Ta-Chung Hao Structure of decoration acoustic board
US7721847B2 (en) * 2007-03-27 2010-05-25 9 Wood, Inc. Acoustic panel

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ES2391336A1 (en) 2012-11-23
WO2012059899A2 (en) 2012-05-10
ES2421461R1 (en) 2014-08-13
ES2421461B1 (en) 2015-05-20
WO2012059899A3 (en) 2012-10-26

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