EP0511149A1 - Noise suppression device, especially for ventilation systems - Google Patents

Noise suppression device, especially for ventilation systems Download PDF

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Publication number
EP0511149A1
EP0511149A1 EP92500041A EP92500041A EP0511149A1 EP 0511149 A1 EP0511149 A1 EP 0511149A1 EP 92500041 A EP92500041 A EP 92500041A EP 92500041 A EP92500041 A EP 92500041A EP 0511149 A1 EP0511149 A1 EP 0511149A1
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EP
European Patent Office
Prior art keywords
soundproofing
panels
carcass
elements
rigid
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.)
Withdrawn
Application number
EP92500041A
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German (de)
French (fr)
Inventor
Pedro Galofre Perrerons
Francisco Javier Magrans Fontrodona
Javier Arranz Serrat
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NOISETEC SA
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NOISETEC SA
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Publication date
Application filed by NOISETEC SA filed Critical NOISETEC SA
Publication of EP0511149A1 publication Critical patent/EP0511149A1/en
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • 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

Definitions

  • the present invention relates to a soundproofing device which is specially designed to dampen the noise occurring in ventilation systems, air conditioning and the like, and which causes good attenuation of this noise at relatively low production costs.
  • Soundproofing devices are known for ventilation systems and the like, which comprise a metal carcass, generally of substantially parallelepiped shape and open on two opposite sides, and several rigid soundproofing elements which consist of envelopes whose walls are perforated metal plates which have been filled with an absorbent material, for example fiberglass. These soundproofing elements are fixed parallel to each other, inside the carcass, by welding or by means of rivets, so that between each pair of elements, a duct of rectangular section is formed in the direction of the air flow.
  • Devices of this type are of a relatively complex assembly, since they require welds or rivets, and in addition, the soundproofing elements require the rigid metal structure mentioned to support the absorbent material, which incurs additional material and labor costs.
  • the ducts serving for the passage of ventilation air are straight, which prevents good attenuation of the high frequency components of the noise which is transmitted by the ventilation system, since the sound at high frequencies shows no diffraction.
  • the present invention aims to remedy the drawbacks mentioned, by presenting a soundproofing device, especially for ventilation systems and the like, which is of a simple structure and of reduced cost and which improves in at the same time the attenuation of the high frequency components of the noise produced by the ventilation equipment and which is propagated through the ducts.
  • the subject of the invention is a soundproofing device, in particular for ventilation systems, of the type comprising a metal carcass and several soundproofing elements arranged inside this carcass, characterized in that it comprises ways to guide arranged inside the carcass and in that the soundproofing elements comprise several rigid molded panels, made of a soundproofing material, which are provided with coupling means with said guide means.
  • the rigid molded panels comprise a plate forming an undulation which delimits a cavity bounded by two lateral surfaces and the coupling means consist of rigid fins which extend outward from the ends of the sign.
  • two rows of panels and panel parts mate in each pair of guide means, these panels and panel parts having their concavities which face each other, thus forming said soundproofing elements, while between each pair of contiguous soundproofing elements, a non-rectilinear conduit is formed, serving for the passage of air, the shape and thickness of which depend on the relative arrangement of the panels and panel parts.
  • This arrangement has the advantage that the non-rectilinear conduits used for the passage of air allow better absorption of sound at high frequencies.
  • the guide means comprise several sections, made of a rigid plastic material, which have a flat face for attachment to an interior surface of the carcass and which comprise, on the opposite face, several pairs of projections separated from each other by a distance to accommodate the fins of the panels, while allowing them to slide.
  • the profiles can be fixed to the corresponding surface in various ways, for example by means of an adhesive substance.
  • FIGS 1, 2 and 3 show a panel 1 and a half of panel 2 (obtained by cutting this panel 1) which is used to make a device according to the invention.
  • the panel 1 is a rigid molded panel which comprises a plate 3 forming a corrugation which delimits a cavity bounded by two lateral surfaces 4.
  • This panel 1 also comprises, according to a preferred embodiment, a rigid fin 5 which extends outwards from the ends of the panel 1.
  • the soundproofing device of the invention comprises a carcass 6, shown in FIG. 4, which is provided, on its two bases 7, with guides 8 such as those which can be seen in FIG. 6.
  • Soundproofing elements 9 are arranged inside the shell 6, each of these elements being formed by two rows of panels 1 and 2 which are introduced by sliding them, one behind the other, in each corresponding pair of guides 8, with the concavities of the panels 1 and 2 facing each other.
  • Some of the elements 9 can consist of a single row of panels 1 and 2 when these elements are in contact with the side walls of the carcass 6, as shown in FIGS. 4 and 5.
  • the soundproofing elements 9 have a sinusoidal shape and have a uniform thickness, thus forming between two successive elements of the conduits 10 which are intended for the passage of air and which are also sinusoidal and of uniform thickness.
  • Figure 6 shows in section a soundproofing element 9 and we can see in this figure how the panels 1 and 2 are fixed between two guides 8 corresponding.
  • a cover 11 is provided which is fixed to the carcass by known means and which serves to supplement these elements.
  • the guides 8 are constituted by profiles of rigid plastic material 8 which have a flat face 12 allowing their fixing on a base 7 of the carcass 6 and which, on the opposite face 14, are provided with several pairs of projections 13, the projections of each pair being spaced apart by a distance making it possible to accommodate the fins 5 of the panels 1 and 2, while allowing their sliding.
  • the rigid plastic profiles 8 can be fixed to the base 7 by means of various known systems, advantageously by means of an adhesive substance.
  • the soundproofing device of the invention turns out to be of a simpler assembly and it makes it possible to remove a large part of the non-absorbent materials which were necessary until now, so that their cost is significantly reduced.
  • the soundproofing device described is placed for example at the outlet of a ventilation system, with the soundproofing elements 9 and the conduits 10 parallel to the air flow, so that the air and the sound produced by the mechanical elements of the ventilation system, run through the non-rectilinear conduits 10.
  • the sound is absorbed by the soundproofing elements 9 thanks to the characteristics of the material and, moreover, because of the shape of the conduits 10, I must necessarily meet the panels 1 and 2 of soundproofing material which constitute the elements 9
  • the sound absorption effect is particularly improved compared to the prior art insofar as they are respected the high frequency components of sound, which do not exhibit diffraction, and this is why they do not deviate from a trajectory which is straight; in this case, the known rectilinear conduits are inoperative, since these high-frequency components do not meet the walls of the conduit.
  • the direction of propagation is interrupted by the panels 1 and 2 which constitute the walls of the conduits, which has the result that the high frequency components are also damped.
  • the materials used for panels 1 and 2 may for example be fiberglass, rock wool, cotton fiber, or any other soundproofing material.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Duct Arrangements (AREA)

Abstract

This device is of the type comprising a metal casing (6) and a plurality of soundproofing elements (9) placed inside this casing (6). According to the invention, it comprises guiding means arranged inside the casing (6) and the soundproofing elements (9) comprise a plurality of moulded rigid panels (1), made from a soundproofing material, which are provided with means for coupling with the said guiding means. <IMAGE>

Description

La présente invention concerne un dispositif d'insonorisation qui est conçu spécialement pour amortir le bruit se produisant dans les systèmes de ventilation, d'air conditionné et analogues, et qui provoque une bonne atténuation de ce bruit moyennant des frais de réalisation relativement réduits.The present invention relates to a soundproofing device which is specially designed to dampen the noise occurring in ventilation systems, air conditioning and the like, and which causes good attenuation of this noise at relatively low production costs.

On connaît des dispositifs d'insonorisation, pour systèmes de ventilation et analogues, qui comprennent une carcasse métallique, généralement de forme sensiblement parallélépipédique et ouverte sur deux côtés opposés, et plusieurs éléments rigides d'insonorisation qui sont constitués d'enveloppes dont les parois sont des plaques métalliques perforées qu'on a remplies d'un matériau absorbant, par exemple de fibre de verre. Ces éléments d'insonorisation sont fixés parallélement entre eux, à l'intérieur de la carcasse, par soudure ou au moyen de rivets, de manière telle qu'entre chaque paire d'éléments, il se forme un conduit de section rectangulaire dans le sens du flux d'air.Soundproofing devices are known for ventilation systems and the like, which comprise a metal carcass, generally of substantially parallelepiped shape and open on two opposite sides, and several rigid soundproofing elements which consist of envelopes whose walls are perforated metal plates which have been filled with an absorbent material, for example fiberglass. These soundproofing elements are fixed parallel to each other, inside the carcass, by welding or by means of rivets, so that between each pair of elements, a duct of rectangular section is formed in the direction of the air flow.

Les dispositifs de ce type sont d'un montage relativement complexe, étant donné qu'ils nécessitent des soudures ou des rivets, et qu'en outre, les éléments d'insonorisation nécessitent la structure métallique rigide mentionnée pour soutenir le matériau absorbant, ce qui entraîne des frais supplémentaires en matériaux et en main-d'oeuvre.Devices of this type are of a relatively complex assembly, since they require welds or rivets, and in addition, the soundproofing elements require the rigid metal structure mentioned to support the absorbent material, which incurs additional material and labor costs.

Par ailleurs, dans les dispositifs utilisés, les conduits servant pour le passage de l'air de ventilation sont rectilignes, ce qui empêche une bonne atténuation des composantes à haute fréquence du bruit qui est transmis par le système de ventilation, étant donné que le son à hautes fréquences ne présente pas de diffraction.Furthermore, in the devices used, the ducts serving for the passage of ventilation air are straight, which prevents good attenuation of the high frequency components of the noise which is transmitted by the ventilation system, since the sound at high frequencies shows no diffraction.

C'est pourquoi la présente invention a pour but de remédier aux inconvénients mentionnés, en présentant un dispositif d'insonorisation, spécialement pour des systèmes de ventilation et analogues, qui soit d'une structure simple et d'un coût réduit et qui améliore en même temps l'atténuation des composantes à haute fréquence du bruit que produisent les équipements de ventilation et qui se propage par les conduits.This is why the present invention aims to remedy the drawbacks mentioned, by presenting a soundproofing device, especially for ventilation systems and the like, which is of a simple structure and of reduced cost and which improves in at the same time the attenuation of the high frequency components of the noise produced by the ventilation equipment and which is propagated through the ducts.

A cet effet, l'invention a pour objet un dispositif d'insonorisation, notamment pour systèmes de ventilation, du type comprenant une carcasse métallique et plusieurs éléments d'insonorisation disposés à l'intérieur de cette carcasse, caractérisé en ce qu'il comporte des moyens de guidage disposés à l'intérieur de la carcasse et en ce que les éléments d'insonorisation comprennent plusieurs panneaux rigides moulés, en un matériau d'insonorisation, qui sont pourvus de moyens d'accouplement avec lesdits moyens de guidage.To this end, the subject of the invention is a soundproofing device, in particular for ventilation systems, of the type comprising a metal carcass and several soundproofing elements arranged inside this carcass, characterized in that it comprises ways to guide arranged inside the carcass and in that the soundproofing elements comprise several rigid molded panels, made of a soundproofing material, which are provided with coupling means with said guide means.

D'une manière avantageuse, les panneaux rigides moulés comprennent une plaque formant une ondulation qui délimite une cavité limitée par deux surfaces latérales et les moyens d'accouplement sont constitués par des ailettes rigides qui s'étendent vers l'extérieur à partir des extrémités du panneau.Advantageously, the rigid molded panels comprise a plate forming an undulation which delimits a cavity bounded by two lateral surfaces and the coupling means consist of rigid fins which extend outward from the ends of the sign.

De cette manière, il n'est besoin d'aucun type de cadre rigide pour soutenir le matériau d'insonorisation et les panneaux s'accouplent à la carcasse d'une façon simple, ce qui permet de réaliser le dispositif à frais réduits.In this way, there is no need for any type of rigid frame to support the soundproofing material and the panels couple to the carcass in a simple manner, which makes it possible to produce the device at reduced cost.

Suivant une réalisation préférée, deux rangées de panneaux et de parties de panneau s'accouplent dans chaque paire de moyens de guidage, ces panneaux et parties de panneau ayant leurs concavités qui se font face, formant ainsi lesdits éléments d'insonorisation, tandis qu'entre chaque paire d'éléments d'insonorisation contigus, il se forme un conduit, non rectiligne et servant pour le passage de l'air, dont la forme et l'épaisseur dépendent de la disposition relative des panneaux et parties de panneau.According to a preferred embodiment, two rows of panels and panel parts mate in each pair of guide means, these panels and panel parts having their concavities which face each other, thus forming said soundproofing elements, while between each pair of contiguous soundproofing elements, a non-rectilinear conduit is formed, serving for the passage of air, the shape and thickness of which depend on the relative arrangement of the panels and panel parts.

Cette disposition présente l'avantage que les conduits non rectilignes servant pour le passage de l'air permettent une meilleure absorption du son aux hautes fréquences.This arrangement has the advantage that the non-rectilinear conduits used for the passage of air allow better absorption of sound at high frequencies.

D'une manière avantageuse, les moyens de guidage comprennent plusieurs profilés, en une matière plastique rigide, qui présentent une face plane en vue de leur fixation sur une surface intérieure de la carcasse et qui comportent, sur la face opposée, plusieurs paires de saillies séparées l'une de l'autre d'une distance permettant de loger les ailettes des panneaux, tout en leur permettant de glisser.Advantageously, the guide means comprise several sections, made of a rigid plastic material, which have a flat face for attachment to an interior surface of the carcass and which comprise, on the opposite face, several pairs of projections separated from each other by a distance to accommodate the fins of the panels, while allowing them to slide.

Les profilés peuvent se fixer sur la surface correspondante de diverses manières, par exemple au moyen d'une substance adhésive.The profiles can be fixed to the corresponding surface in various ways, for example by means of an adhesive substance.

De cette manière, il ne s'avère pas nécessaire de fixer des guides métalliques sur la carcasse avec des joints soudés ou rivetés.In this way, it is not necessary to fix metal guides on the carcass with welded or riveted joints.

D'autres caractéristiques et avantages de l'invention ressortiront de la description qui va suivre, à titre d'exemple non limitatif et en regard des dessins annexés sur lesquels :

  • la figure 1 est une vue en perspective d'un panneau destiné à un dispositif suivant un mode de réalisation pratique conforme à l'invention,
  • la figure 2 est une vue en section droite du panneau de la figure 1,
  • la figure 3 est une vue en perspective d'un panneau tel que celui de la figure 1, coupé en son milieu suivant la direction longitudinale, ,
  • la figure 4 est une vue en perspective de deux éléments d'insonorisation disposés dans la carcasse, qui est partiellement en coupe, et formant une partie d'un dispositif d'insonorisation conforme à l'invention,
  • la figure 5 est une coupe du dispositif de la figure 4 suivant un plan horizontal,
  • la figure 6 est un détail d'une section suivant la ligne A-A de la figure 5,
  • la figure 7 est une vue en élévation d'un profilé de guidage suivant une réalisation préférée de l'invention et
  • la figure 8 est une vue en perspective d'un détail de la base de la carcasse du dispositif de la figure 4, base sur laquelle on a appliqué des profilés de guidage tels que celui de la figure 7.
Other characteristics and advantages of the invention will emerge from the description which follows, by way of nonlimiting example and with reference to the appended drawings in which:
  • FIG. 1 is a perspective view of a panel intended for a device according to a practical embodiment in accordance with the invention,
  • FIG. 2 is a cross-section view of the panel of FIG. 1,
  • FIG. 3 is a perspective view of a panel such as that of FIG. 1, cut in its middle in the longitudinal direction,,
  • FIG. 4 is a perspective view of two soundproofing elements arranged in the carcass, which is partially in section, and forming part of a soundproofing device according to the invention,
  • FIG. 5 is a section through the device in FIG. 4 along a horizontal plane,
  • FIG. 6 is a detail of a section along the line AA of FIG. 5,
  • FIG. 7 is an elevation view of a guide profile according to a preferred embodiment of the invention and
  • FIG. 8 is a perspective view of a detail of the base of the carcass of the device of FIG. 4, base on which guide profiles such as that of FIG. 7 have been applied.

Les figures 1, 2 et 3 représentent un panneau 1 et une moitié de panneau 2 (obtenue en coupant ce panneau 1) qu'on utilise pour réaliser un dispositif conforme à l'invention. Le panneau 1 est un panneau rigide moulé qui comprend une plaque 3 formant une ondulation qui délimite une cavité limitée par deux surfaces latérales 4.Figures 1, 2 and 3 show a panel 1 and a half of panel 2 (obtained by cutting this panel 1) which is used to make a device according to the invention. The panel 1 is a rigid molded panel which comprises a plate 3 forming a corrugation which delimits a cavity bounded by two lateral surfaces 4.

Ce panneau 1 comprend aussi, suivant une réalisation préférée, une ailette 5 rigide qui s'étend vers l'extérieur à partir des extrémités du panneau 1.This panel 1 also comprises, according to a preferred embodiment, a rigid fin 5 which extends outwards from the ends of the panel 1.

Le dispositif d'insonorisation de l'invention comprend une carcasse 6, représentée à la figure 4, qui est pourvue, sur ses deux bases 7, de guides 8 tels que ceux qu'on peut voir à la figure 6.The soundproofing device of the invention comprises a carcass 6, shown in FIG. 4, which is provided, on its two bases 7, with guides 8 such as those which can be seen in FIG. 6.

Des éléments d'insonorisation 9 sont disposés à l'intérieur de la caracasse 6, chacun de ces éléments étant formé de deux rangées de panneaux 1 et 2 que l'on introduit en les faisant glisser, l'un derrière l'autre, dans chaque paire correspondante de guides 8, avec les concavités des panneaux 1 et 2 se faisant face.Soundproofing elements 9 are arranged inside the shell 6, each of these elements being formed by two rows of panels 1 and 2 which are introduced by sliding them, one behind the other, in each corresponding pair of guides 8, with the concavities of the panels 1 and 2 facing each other.

Certains des éléments 9 peuvent être constitués par une rangée unique de panneaux 1 et 2 lorsque ces éléments sont en contact avec les parois latérales de la carcasse 6, ainsi que cela est représenté aux figures 4 et 5.Some of the elements 9 can consist of a single row of panels 1 and 2 when these elements are in contact with the side walls of the carcass 6, as shown in FIGS. 4 and 5.

Si on introduit les panneaux comme le montrent les figures 4 et 5, les éléments d'insonorisation 9 présentent une forme sinusoïdale et ont une épaisseur uniforme, formant ainsi entre deux éléments successifs des conduits 10 qui sont destinés au passage de l'air et qui sont aussi sinusoïdaux et d'épaisseur uniforme.If the panels are introduced as shown in FIGS. 4 and 5, the soundproofing elements 9 have a sinusoidal shape and have a uniform thickness, thus forming between two successive elements of the conduits 10 which are intended for the passage of air and which are also sinusoidal and of uniform thickness.

En prévoyant d'autres combinaisons de panneaux 1 et de panneaux 2, on peut obtenir des éléments d'insonorisation 9, et/ou des conduits 10, qui présentent d'autres formes, également non rectilignes, mais d'épaisseur variable.By providing other combinations of panels 1 and panels 2, it is possible to obtain soundproofing elements 9, and / or conduits 10, which have other shapes, also not straight, but of variable thickness.

La figure 6 représente en section un élément d'insonorisation 9 et on peut constater sur cette figure la manière dont les panneaux 1 et 2 se trouvent fixés entre deux guides 8 correspondants.Figure 6 shows in section a soundproofing element 9 and we can see in this figure how the panels 1 and 2 are fixed between two guides 8 corresponding.

A chaque extrémité des éléments d'insonorisation 9, il est prévu un couvercle 11 qui est fixé à la carcasse par des moyens connus et qui sert à compléter ces éléments.At each end of the soundproofing elements 9, a cover 11 is provided which is fixed to the carcass by known means and which serves to supplement these elements.

Dans la réalisation préférée qui est représentée aux figures 7 et 8, les guides 8 sont constitués par des profilés en matière plastique rigide 8 qui présentent une face plane 12 permettant leur fixation sur une base 7 de la carcasse 6 et qui, sur la face opposée 14, sont pourvus de plusieurs paires de saillies 13, les saillies de chaque paire étant espacées d'une distance permettant de loger les ailettes 5 des panneaux 1 et 2, tout en autorisant leur glissement.In the preferred embodiment which is represented in FIGS. 7 and 8, the guides 8 are constituted by profiles of rigid plastic material 8 which have a flat face 12 allowing their fixing on a base 7 of the carcass 6 and which, on the opposite face 14, are provided with several pairs of projections 13, the projections of each pair being spaced apart by a distance making it possible to accommodate the fins 5 of the panels 1 and 2, while allowing their sliding.

Les profilés en matière plastique rigide 8 peuvent se fixer sur la base 7 au moyen de divers systèmes connus, avantageusement au moyen d'une substance adhésive.The rigid plastic profiles 8 can be fixed to the base 7 by means of various known systems, advantageously by means of an adhesive substance.

Ainsi qu'il découle de la description qui précède, le dispositif d'insonorisation de l'invention se trouve être d'un montage plus simple et il permet de supprimer une grande partie des matériaux non absorbants qui étaient nécessaires jusqu'à présent, de sorte que leur coût se trouve notablement réduit.As follows from the above description, the soundproofing device of the invention turns out to be of a simpler assembly and it makes it possible to remove a large part of the non-absorbent materials which were necessary until now, so that their cost is significantly reduced.

Le dispositif d'insonorisation décrit se place par exemple à la sortie d'un système de ventilation, avec les éléments d'insonorisation 9 et les conduits 10 parallèles au flux d'air, de telle façon que l'air, et le son produit par les éléments mécaniques du système de ventilation, parcourent les conduits non rectilignes 10. Le son est amorti par les éléments d'insonorisation 9 grâce aux caractéristiques du matériau et, par ailleurs, du fait de la forme des conduits 10, Je son doit nécessairement rencontrer les panneaux 1 et 2 de matériau d'insonorisation qui constituent les éléments 9The soundproofing device described is placed for example at the outlet of a ventilation system, with the soundproofing elements 9 and the conduits 10 parallel to the air flow, so that the air and the sound produced by the mechanical elements of the ventilation system, run through the non-rectilinear conduits 10. The sound is absorbed by the soundproofing elements 9 thanks to the characteristics of the material and, moreover, because of the shape of the conduits 10, I must necessarily meet the panels 1 and 2 of soundproofing material which constitute the elements 9

L'effet d'absorption acoustique se trouve particulièrement amélioré par rapport à l'état de la technique dans la mesure où sont respectées les composantes à haute fréquence du son, qui ne présentent pas de diffraction, et c'est pourquoi elles ne dévient pas d'une trajectoire qui est droite ; dans ce cas, les conduits rectilignes connus sont inopérants, étant donné que ces composantes à haute fréquence ne rencontrent pas les parois du conduit. Dans le dispositif de l'invention, la direction de propagation est interrompue par les panneaux 1 et 2 qui constituent les parois des conduits, ce qui a pour résultat que les composantes à haute fréquence sont amorties aussi.The sound absorption effect is particularly improved compared to the prior art insofar as they are respected the high frequency components of sound, which do not exhibit diffraction, and this is why they do not deviate from a trajectory which is straight; in this case, the known rectilinear conduits are inoperative, since these high-frequency components do not meet the walls of the conduit. In the device of the invention, the direction of propagation is interrupted by the panels 1 and 2 which constitute the walls of the conduits, which has the result that the high frequency components are also damped.

Les matériaux employés pour les panneaux 1 et 2 peuvent par exemple être de la fibre de verre, de la laine de roche, de la fibre de coton, ou tout autre matériau d'insonorisation.The materials used for panels 1 and 2 may for example be fiberglass, rock wool, cotton fiber, or any other soundproofing material.

La forme et la taille des différents éléments du dispositif de l'invention, en particulier des panneaux 1 et 2 et de la carcasse 6, ainsi que tout autre détail qui n'affecte pas le caractère essentiel de l'invention, seront indépendants de l'objet de l'invention.The shape and size of the various elements of the device of the invention, in particular of the panels 1 and 2 and of the carcass 6, as well as any other detail which does not affect the essential character of the invention, will be independent of the object of the invention.

Claims (6)

Dispositif d'insonorisation, notamment pour systèmes de ventilation, du type comprenant une carcasse métallique (6) et plusieurs éléments d'insonorisation (9) disposés à l'intérieur de cette carcasse (6), caractérisé en ce qu'il comporte des moyens de guidage (8) disposés à l'intérieur de la carcasse (6) et en ce que les éléments d'insonorisation (9) comprennent plusieurs panneaux rigides moulés (1), en un matériau d'insonorisation, qui sont pourvus de moyens d'accouplement (5) avec lesdits moyens de guidage (8).Soundproofing device, in particular for ventilation systems, of the type comprising a metal carcass (6) and several soundproofing elements (9) arranged inside this carcass (6), characterized in that it comprises means guide (8) arranged inside the carcass (6) and in that the soundproofing elements (9) comprise several rigid molded panels (1), made of a soundproofing material, which are provided with means 'coupling (5) with said guide means (8). Dispositif d'insonorisation suivant la revendication 1, caractérisé en ce que les panneaux rigides moulés (1) comprennent une plaque (3) formant une ondulation qui délimite une cavité limitée par deux surfaces latérales (4).Soundproofing device according to claim 1, characterized in that the rigid molded panels (1) comprise a plate (3) forming a corrugation which delimits a cavity bounded by two lateral surfaces (4). Dispositif d'insonorisation suivant l'une quelconque des revendications 1 et 2, caractérisé en ce que les moyens d'accouplement (5) sont constitués par des ailettes rigides (5) qui s'étendent vers l'extérieur à partir des extrémités des panneaux (1).Soundproofing device according to either of Claims 1 and 2, characterized in that the coupling means (5) consist of rigid fins (5) which extend outwards from the ends of the panels (1). Dispositif d'insonorisation suivant l'une quelconque des revendications 1 à 3, caractérisé en ce que deux rangées de panneaux (1) et de parties de panneau (2) s'accouplent dans chaque paire de moyens de guidage (8), ces panneaux et parties de panneau ayant leurs concavités qui se font face, formant ainsi lesdits éléments d'insonorisation (9), tandis qu'entre chaque paire d'éléments d'insonorisation (9) contigus, il se forme un conduit (10), non rectiligne et servant pour le passage de l'air, dont la forme et l'épaisseur dépendent de la disposition relative des panneaux (1) et parties de panneau (2).Soundproofing device according to any one of Claims 1 to 3, characterized in that two rows of panels (1) and panel parts (2) are coupled in each pair of guide means (8), these panels and panel parts having their concavities facing each other, thereby forming said soundproofing elements (9), while between each pair of contiguous soundproofing elements (9), a conduit (10) is formed, not rectilinear and serving for the passage of air, the shape and thickness of which depend on the relative arrangement of the panels (1) and parts of the panel (2). Dispositif d'insonorisation suivant l'une quelconque des revendications 1, 3 et 4, caractérisé en ce que les moyens de guidage (8) comprennent plusieurs profilés (8), en une matière plastique rigide, qui présentent une face plane (12) en vue de leur fixation sur une surface intérieure (7) de la carcasse (6) et qui comportent,sur la face opposée (14), plusieurs paires de saillies (13) séparées l'une de l'autre d'une distance permettant de loger les ailettes (5) des panneaux (1), tout en leur permettant de glisser.Soundproofing device according to any one of claims 1, 3 and 4, characterized in that the guide means (8) comprise several profiles (8), made of a rigid plastic material, which have a flat face (12) in view of their attachment to an inner surface (7) of the carcass (6) and which comprise, on the opposite face (14), several pairs of projections (13) separated from each other by a distance allowing accommodate the fins (5) of the panels (1), while allowing them to slide. Dispositif d'insonorisation suivant la revendication 5, caractérisé en ce que les profilés (8) se fixent sur la surface correspondante de diverses manières, par exemple au moyen d'une substance adhésive.Soundproofing device according to claim 5, characterized in that the profiles (8) are fixed to the corresponding surface in various ways, for example by means of an adhesive substance.
EP92500041A 1991-04-24 1992-04-20 Noise suppression device, especially for ventilation systems Withdrawn EP0511149A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9105074A FR2675936B1 (en) 1991-04-24 1991-04-24 SOUNDPROOFING DEVICE, PARTICULARLY FOR VENTILATION SYSTEMS.
FR9105074 1991-04-24

Publications (1)

Publication Number Publication Date
EP0511149A1 true EP0511149A1 (en) 1992-10-28

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ID=9412219

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Application Number Title Priority Date Filing Date
EP92500041A Withdrawn EP0511149A1 (en) 1991-04-24 1992-04-20 Noise suppression device, especially for ventilation systems

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EP (1) EP0511149A1 (en)
ES (1) ES2036458B1 (en)
FR (1) FR2675936B1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0916906A2 (en) * 1997-11-10 1999-05-19 Stifab Farex AB A sound absorber for ventilation ducts
EP0921358A2 (en) * 1997-11-03 1999-06-09 Stifab Farex AB A baffel for sound absorbers
WO2006071166A1 (en) * 2004-12-29 2006-07-06 Fläkt Woods AB Baffle sound damper
FR2899992A1 (en) * 2006-04-12 2007-10-19 Ae2S Sarl Aeroacoustic screen for e.g. air conditioner, has perforated panels made of noise absorbing material, where openings are cut in staggered rows for each pair of panels and constitute baffle for passage of air
WO2010131021A1 (en) * 2009-05-11 2010-11-18 Russell Wheeler A ventilation duct and baffle element

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE521579A (en) *
DE3544022A1 (en) * 1985-12-13 1987-06-19 Wakofix Montagebau Gmbh & Co K Sound damper for smoke-exhaust and venting ducts

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3219339C1 (en) * 1982-05-22 1983-02-03 Metzeler Schaum Gmbh, 8940 Memmingen Flat element for airborne sound absorption

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE521579A (en) *
DE3544022A1 (en) * 1985-12-13 1987-06-19 Wakofix Montagebau Gmbh & Co K Sound damper for smoke-exhaust and venting ducts

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0921358A2 (en) * 1997-11-03 1999-06-09 Stifab Farex AB A baffel for sound absorbers
EP0921358A3 (en) * 1997-11-03 1999-06-23 Stifab Farex AB A baffel for sound absorbers
EP0916906A2 (en) * 1997-11-10 1999-05-19 Stifab Farex AB A sound absorber for ventilation ducts
EP0916906A3 (en) * 1997-11-10 1999-06-23 Stifab Farex AB A sound absorber for ventilation ducts
WO2006071166A1 (en) * 2004-12-29 2006-07-06 Fläkt Woods AB Baffle sound damper
FR2899992A1 (en) * 2006-04-12 2007-10-19 Ae2S Sarl Aeroacoustic screen for e.g. air conditioner, has perforated panels made of noise absorbing material, where openings are cut in staggered rows for each pair of panels and constitute baffle for passage of air
WO2010131021A1 (en) * 2009-05-11 2010-11-18 Russell Wheeler A ventilation duct and baffle element

Also Published As

Publication number Publication date
FR2675936B1 (en) 1993-08-20
ES2036458B1 (en) 1994-01-16
FR2675936A1 (en) 1992-10-30
ES2036458R (en) 1993-06-16
ES2036458A2 (en) 1993-05-16

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