EP3555370B1 - Élément de construction absorbant le son à profilés d'étouffement et paroi d'insonorisation - Google Patents

Élément de construction absorbant le son à profilés d'étouffement et paroi d'insonorisation Download PDF

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Publication number
EP3555370B1
EP3555370B1 EP17826166.5A EP17826166A EP3555370B1 EP 3555370 B1 EP3555370 B1 EP 3555370B1 EP 17826166 A EP17826166 A EP 17826166A EP 3555370 B1 EP3555370 B1 EP 3555370B1
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EP
European Patent Office
Prior art keywords
sound
absorbing
profile
inlet surface
profiles
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Active
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EP17826166.5A
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German (de)
English (en)
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EP3555370A1 (fr
Inventor
Ronald Tschiersch
Christian Hoppe
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Liaver GmbH and Co KG
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Liaver GmbH and Co KG
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Publication of EP3555370A1 publication Critical patent/EP3555370A1/fr
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    • 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
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
    • E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
    • E01F8/0029—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement with porous surfaces, e.g. concrete with porous fillers
    • 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
    • E04B2001/8461—Solid slabs or blocks layered

Definitions

  • the present invention relates to a sound-absorbing component which preferably has a plate-like basic shape but can also be produced in other shapes.
  • the sound-absorbing component comprises an absorber layer and extinction profiles embedded therein, completely enclosed in the material of the absorber layer, which also affect the acoustic properties of the component and contribute in a particularly surprising way to increasing the absorption effect.
  • a panel element for a noise protection wall which is composed of several layers of material.
  • a carrier layer is formed by interconnected wooden boards, on which a continuous layer of rock wool or comparable fiber material is applied in the direction of the sound source.
  • This noise-absorbing layer is covered over the entire surface by another layer made of a cement-bound, porous material.
  • the material and manufacturing costs for such plate elements are high.
  • the overall thickness of the sheet element must be chosen to be large if useful absorption properties are to be achieved.
  • this panel element only shows suitable absorption properties in certain frequency ranges, since significant frequency ranges are either already reflected on the continuous cover layer or cannot be sufficiently absorbed by the enclosed stone wool layer, so that there is an undesirable reflection of the sound on the rear wooden wall.
  • the enclosed stone wool is also sensitive to moisture, so that the panel elements either have to be sealed at great expense or the sound-absorbing properties decrease over time.
  • the structural element produced according to this has a concrete support plate to which facing shells are attached on one or two sides, the sintered expanded glass contain.
  • sintered expanded glass is generally weather-resistant, it is very susceptible to mechanical stress.
  • the facing shell made of sintered expanded glass on the outside of the sound-absorbing component is therefore already damaged by moderate mechanical stress, which can already occur during the assembly process.
  • the EP 0 548 856 B1 shows a privacy and noise protection wall with a supporting structure.
  • heavily profiled sound-absorbing profiles are attached to a concrete supporting wall.
  • the sound-absorbing profiles consist of no-fines lean concrete and have individual cavities, some of which protrude into the lean concrete layer of the sound-absorbing profiles. To improve sound insulation, these cavities can be filled with mineral wool.
  • a disadvantage of this arrangement is the significant profiling of the outwardly directed surface of the sound-absorbing profile, which leads to improved absorption properties, but makes use in strong air currents, for example in the immediate vicinity of railway tracks for high-speed trains, impossible. This also results in a large overall wall thickness and weight.
  • a sound-absorbing wall element which has a base layer made of concrete.
  • a large depression is worked into the base layer, in which a covering layer of individual plate-shaped elements consisting of no-fines porous Concrete is used.
  • the no-fines concrete slabs improve the absorption properties, while the mechanical stability of the underlying base course is impaired.
  • flat sound absorption panels are located between the no-fines concrete elements and the base layer.
  • the intermediate sound absorbing panels fill substantially the entire area in the cavity, except for minor bare areas at the edges of the individual no-fines concrete slabs.
  • a sound-absorbing hollow-core building board which can be used in particular as a wall panel.
  • the wall panel includes an external Helmholtz acoustic resonator comprising a front skin and a back skin and a perimeter structure disposed between the spaced skins.
  • the front skin faces a sound source and has openings to allow sound waves to enter a cavity located between the skins.
  • the wall panel includes a plurality of internal Helmholtz acoustic resonators located within the cavity.
  • WO 85/02640 A1 describes a sound-absorbing component with an outer wall and an inner wall. Both walls are separated from each other by an air space. Furthermore, the component has spherical or hemispherical resonators spaced apart from one another with resonator necks. The resonator necks couple between the air space and the resonators. The resonators have cavities.
  • the DE 25 24 906 A1 describes a protective wall against noise emissions.
  • the protective wall includes a load-bearing, at the same time sound-insulating reinforced concrete wall and an absorption layer, which are connected to each other by gluing or needling.
  • the absorption layer consists of open-pored plates made of plastic-bonded elastomer fibers reinforced with fabric inserts.
  • the reinforced concrete wall has a profile with grooves in the border area to the absorption layer. The grooves can be partially or fully filled with a secondary absorbent material. Alternatively, the absorption material can also be applied only as a covering in the grooves. Softened, fine-pored and open-pored foams are preferably suitable as secondary absorption materials.
  • a sound-absorbing component which is also suitable for outdoor use.
  • This component comprises a sound-absorbing cover layer and sound-absorbing elements embedded therein with an increased degree of absorption compared to the cover layer.
  • the directed toward the sound source surface of the top layer is flat, the Sound absorber elements are arranged at a distance from one another and an absorption surface of the sound absorber elements lies in a plane parallel to the cover layer. In this plane, the area occupied by the sound absorber elements is smaller than the area not occupied by sound absorber elements.
  • the sound-absorbing material of the sound-absorbing elements is expensive, so that the overall costs of the component are still relatively high, although they are already significantly cheaper in comparison to older arrangements. In addition, the introduction of the sound absorbing elements is technologically demanding.
  • One object of the present invention is therefore, based on the prior art mentioned, to provide a further improved sound-absorbing component which, above all, is inexpensive and easy to produce, preferably based on porous sound-absorbing materials.
  • the component should preferably meet the environmental influences and conditions of use outside and still have a significantly improved degree of absorption than previous solutions, especially in the frequency range between 250 and 2,000 Hz, in order to be able to use the sound-absorbing component efficiently in noise protection.
  • a further object is seen in the provision of an improved noise protection wall.
  • the present invention is based on the surprising finding that the sound absorption in an absorber layer can be improved dramatically by shaped and with Profiles made of hard and therefore not sound-absorbing material, provided with numerous sound inlet openings, are inserted into the absorber layer.
  • the improvement in absorption is particularly noticeable in absorption layers made of simple, relatively poorly absorbent materials.
  • the phenomenon used by the invention can be explained by the fact that reflection, diffraction and superimposition of the sound waves occur at the profile edges and in the interior of the profile, which ultimately lead to the sound energy being extinguished.
  • the cancellation profiles By using the cancellation profiles, the resulting paths of the sound waves in the absorber material can be significantly extended, which also improves the absorption effect.
  • the sound-absorbing component according to the invention has a sound-absorbing absorber layer with a sound entry surface and a plurality of cancellation profiles completely enclosed in the absorber layer and arranged at a distance from one another.
  • Each extinction profile consists of a sound-reflecting material, for example sheet steel, aluminum or plastic, and delimits a partially open profile interior which has an open side facing away from the sound entry surface. The interior of the profile is completely or partially filled with the material of the absorber layer.
  • the cancellation profile preferably has at least one inlet surface with numerous sound inlet openings and at least a closed reflection surface adjoining the inlet surface.
  • the sound inlet openings can preferably be distributed regularly but also irregularly in the inlet area.
  • the reflection surface and the open side of the extinction profile are further away from the sound entry surface of the absorber layer than the inlet surface.
  • the reflection surface can run perpendicular to the sound entry surface or parallel to it or at an acute or obtuse angle. The goal is to let the paths of the reflected sound waves run as long as possible in the absorber material.
  • the inlet surface of the extinction profile runs at a distance and parallel to the sound entry surface.
  • Advantageous modifications use inlet surfaces instead, which run at an angle to the sound entry surface, in particular at an angle of 45° to the sound entry surface. Reflective surfaces running at an angle to the inlet surface preferably adjoin the inlet surface on both sides.
  • An expedient embodiment of the sound-absorbing component is characterized in that the area of all cancellation profiles projected onto the sound entry area is smaller than the area portion of the sound entry area not occupied by the projected area. In alternative embodiments, these areas are approximately in the same or an inverse relationship, the resulting absorption properties also depending on the material used in the absorption layer.
  • the cancellation profile has at least one collar surface which is parallel or runs at an angle to the sound entry surface and extends outside the profile interior.
  • the collar surface can run at an obtuse angle or at an acute angle to the sound entry surface.
  • the collar surface also has acoustic effects and, as a result of reflections on it, lengthens the paths (and thus the transit time) of the reflected sound waves in the absorber material.
  • the collar area is also used to position the extinction profile during the manufacturing process. Finally, the collar area can improve the static properties of the sound-absorbing component, so that its mechanical stability increases.
  • the open side of the extinction profile is further away from the sound entry surface than from the rear side of the absorber layer opposite the sound entry surface.
  • the distance between the sound entry surface of the profiles and the back of the absorber layer is preferably between 10 and 30 mm, particularly preferably between 15 and 25 mm.
  • Advantageous embodiments of the sound-absorbing component use cancellation profiles with a U-shaped, V-shaped, hat-shaped or truncated pyramid-shaped cross section. Other cross-sectional shapes are also possible.
  • the sound inlet openings on the inlet surface are preferably designed as perforations, ie the openings are distributed essentially uniformly over the inlet surface, with the sound inlet openings preferably occupying 5% to 20% of the surface area of the inlet surface.
  • the sound inlet openings preferably have a circular shape with an opening diameter of between 6 and 10 mm. Alternatively, however, elongated slots with edge lengths in the range (5-10) ⁇ (10-30) mm or other shapes can be used for the sound inlet openings.
  • a preferred design of the sound-absorbing component uses an absorber layer with a thickness of 40 to 80 mm, preferably 50 to 70 mm, in particular 60 mm.
  • the absorber layer preferably consists of porous absorber material, in particular expanded glass, expanded clay, pumice, aggregate, wood concrete, mineral fibers or a mixture of these materials.
  • the materials can be held together by a binder, e.g. cement, polyurethane, epoxy resins or others.
  • the absorber layer is preferably a porous absorber and preferably consists of no-fines material.
  • the profile interior of the extinction profile expediently has a cross-sectional area of between 600 and 3000 mm 2 . It is particularly advantageous if the extinction profiles have a height extending in the thickness of the absorber layer that is greater than their width, which leads to good absorption results in particular when the absorber layer has a thickness of more than 60 mm.
  • a preferred embodiment is characterized in that the sound entry surface of the absorber layer directed in the direction of the sound source is flat.
  • acoustic boundary surface effects that promote the absorption effect occur at the boundary surfaces between absorbing materials and reflecting materials is important for the invention.
  • sound wave diffraction, phase shift, superimposition of sound waves and absorption occur on extended travel paths on.
  • higher absorption values, broadband absorption and an increase in absorption in the low-frequency range can be achieved in a targeted manner.
  • boundary surfaces exist between successive layers of different materials (air - absorber layer in the cancellation profile) and along the aforementioned diffraction edges of cancellation profiles placed in an absorber layer.
  • the sound waves arriving there are diffracted, with the diffracted portion of the sound wave being superimposed on the sound waves to be absorbed in order to achieve partial or, in the best case, complete cancellation of the sound waves , resulting in a significantly increased absorption rate.
  • boundary lines are also referred to below as diffraction edges.
  • the cancellation profile consists of a sound-reflecting material.
  • the sound waves which have first passed a path in the absorber layer, penetrate into the cancellation profile via the numerous sound inlet openings in the inlet surface, and/or e.g. B. after reflection at the interface to the carrier layer via the open side of the profile facing away from the sound entry surface. Due to the numerous extinction profiles running side by side, preferably parallel to one another, there are also sound reflections between the profiles. The diffraction edges mentioned are formed particularly effectively at the interfaces between the absorber layer and the extinction profile.
  • the design according to the invention thus allows the production of slim, smooth, weather-resistant, impact-resistant, sound-absorbing components using inexpensive materials as the absorber layer and with inexpensive extinction profiles, while completely dispensing with expensive, highly absorbent, sensitive materials.
  • the components according to the invention can thus be used particularly advantageously for sound absorption on railway lines, where there is regularly only a short distance to high-speed trains, so that strong air turbulence and high noise pollution occur.
  • the sound-absorbing components according to the invention are also suitable for the subsequent implementation of soundproofing measures on and in buildings that were not originally optimized with regard to sound absorption.
  • the extinction profiles in the absorber layer particularly preferably occupy an area of 30% to 70% and have a height of 25% to 80% of the thickness of the absorber layer. Furthermore, it is essential for the invention that the individual extinction profiles are arranged at a distance from one another, so that as many of the diffraction edges and reflection surfaces mentioned arise as possible.
  • a particularly preferred embodiment uses extinction profiles that cover an area of about 50% of the area of the absorber layer. It has proven useful to use U-shaped extinction profiles with a width of about 30 to 60 mm, which has a collar surface on both edges have a width of 15 to 25 mm and maintain an axis distance of 200 to 350 mm from each other. This leads to an optimized absorption rate at frequencies in the range between 250 and 2,000 Hz. This design leads to a targeted improvement in the absorption rate, especially for requirements in rail traffic (cf. e.g. guidelines for noise protection systems on railway lines - RLE).
  • the absorber layer and the carrier layer particularly preferably adjoin one another without leaving cavities, optionally mediated by an adhesive layer if the absorber layer and the carrier layer are glued together.
  • other materials with good or moderate absorbency can also be used.
  • auxiliary and connecting means can also be used for the connection between the optionally provided carrier layer and the absorber layer, in particular retaining clamps, frame elements or mechanical connecting elements, as are known to the person skilled in the art.
  • Alternate embodiments may use less sound absorbing materials.
  • the absorber layer can be flat on its sound entry surface facing the sound source or it can also have a profile if this is useful for the respective application. However, high total absorption values can also be achieved with a flat surface.
  • the cancellation profile is preferably made of sheet steel or zinc with a thickness of ⁇ 1mm or another hard material, e.g. B. plastic or fiber cement.
  • the support layer that may be provided consists particularly preferably of non-sound-absorbing material with a high load-bearing capacity, for example concrete or masonry. In modified versions, however, materials with a low degree of absorption are also suitable for the carrier layer.
  • the present invention also proposes a soundproofing wall which is characterized in that it has a carrier layer to which a multiplicity of sound-absorbing components according to the invention are attached.
  • support structures can be used to hold and/or connect the individual sound-absorbing components.
  • the absorber layer preferably has a thickness of between 5 and 10 cm.
  • a connection of the sound-absorbing component to a carrier layer for constructing a soundproofing wall preferably has a total thickness of between 8 and 12 cm.
  • the absorber layer 01 is formed over the entire area and in practice has a thickness of 60 mm, for example.
  • the absorber layer has a sound entry surface 02 through which sound waves 03 can enter.
  • the absorber layer 01 has a rear side 04, which is preferably parallel to the sound entry surface opposite.
  • a plurality of extinction profiles 05 which are completely surrounded by the material of the absorber layer, are embedded in the absorber layer 01.
  • Each cancellation profile 05 consists of a sound-reflecting material, for example thin sheet metal, plastic or the like.
  • the cancellation profile 05 has at least one open side and preferably one or more inlet surfaces 06 with numerous sound inlet openings 07.
  • the inlet surface 06 runs at the in 1
  • the cancellation profile shown on the right is parallel to the sound entry surface 02 of the absorber layer 01, but can also be at an angle to it.
  • a first inlet surface runs parallel to the sound entry surface 02 and second inlet surfaces 06b run perpendicular to the first inlet surface.
  • the extinction profile 05 preferably has at least one closed reflection surface 08, which adjoins the inlet surface 06.
  • the reflective surface 08 can, for. B. approximately perpendicular to the sound entry surface 02 of the absorber layer 01 (right profile in 1 ) or as a collar surface that runs parallel to the sound entry surface 02 of the absorber layer 01 (right profile in 1 ) or at an angle of about 45° to the sound entry surface 02 (left profile in 1 ) lies.
  • the cancellation profile describes a profile interior 09, which has an open side facing away from the sound entry surface.
  • the profile interior 09 is completely or partially filled with the material of the absorber layer (right profile in 1 ). This in 1
  • the left profile shown is integrated into the absorber layer in a manner not according to the invention.
  • the deletion profiles 05 can be placed next to each other on one level or with a plane offset to each other (as in 1 shown) can be arranged.
  • FIG. 1 shows two U-shaped extinction profiles 05 completely enclosed in the absorber layer 01, each of which has lateral collar surfaces 08.
  • the collar surfaces act as reflection surfaces 08 and also serve to mechanically hold the extinction profiles in the absorber layer.
  • cancellation profiles are shown with a truncated pyramid-shaped cross section, the profile interior of which is filled with material from the absorber layer.
  • These two profiles shown as examples only have a collar surface on one side.
  • the 2 also shows a carrier layer 10 on which the absorber layer 01 is attached.
  • the backing layer 10 consists of a hard, sound-reflecting material.
  • the absorber layer 01 is particularly preferably 50 to 70 mm thick, with a thickness of 60 mm being well suited for the production of absorption panels that are retrofitted to existing walls or the like, while thicknesses above 60 mm are suitable for the construction of noise protection walls are particularly suitable.
  • the distance a between the back 04 and the erasure profiles is preferably 15 to 25 mm.
  • the lateral distance between the extinction profiles is preferably between 200 and 350 mm, based on their respective longitudinal axes.
  • the cancellation profile shown there on the right has an essentially triangular cross-section, the inlet surface 06 is at an angle of approximately 45° to the sound entry surface 02, a reflection surface 08 shaped as a collar surface runs approximately parallel to the sound entry surface 02 and another reflection surface 08 runs at an angle of approximately 45° to the sound entry surface 02.
  • the cancellation profile shown on the left has three inlet surfaces 06, two of them at an angle of approximately 45° to the sound entry surface 02, and the reflection surfaces 08, which are designed as collar surfaces, run approximately parallel to the sound entry surface 02.
  • the cancellation profile shown there on the right has an essentially U-shaped cross section, the collar surfaces 08 on both sides lie at an angle of approximately 45° to the sound entry surface 02, all surfaces of the profile act as reflection surfaces.
  • the extinction profile shown on the left is hollow and is therefore integrated into the absorber layer in a manner which is not according to the invention.
  • the collar surfaces run approximately parallel to the sound entry surface 02.
  • FIG. 5 shows an exemplary cancellation profile 05 both in cross section and in plan view.
  • the Figures 6 to 9 show several measurement curves of the course of the absorption coefficient ⁇ over the frequency f, the special effect of the components according to the invention being visible from the comparison of the curves.
  • FIG. 6 shows a measurement curve of the absorption coefficient ⁇ over the frequency f of an absorber layer consisting only of expanded glass (grain size 1-2 mm) with a layer thickness of 60 mm. Evaluated according to EN 1793-1, the attenuation in this case is 11.3 dB. In comparison, shows 7 a measurement curve of the absorption coefficient ⁇ over the frequency f of the same absorber layer made of expanded glass, several extinction profiles (made of sheet metal, hat-shaped cross-section, hollow profile interior) being integrated in a manner not according to the invention. It can be seen that, particularly in the frequency range from about 250 Hz to about 2000 Hz, there is a significant increase in the absorption coefficient, which proves the effectiveness of the design according to the invention. Evaluated according to EN 1793-1, it complies with the test setup 7 to an attenuation of 14.2 dB, which corresponds to an increase of 26%.
  • a preferred application is a noise protection wall that is composed of numerous sound-absorbing components.
  • sound-absorbing components can be used for sound absorption in vehicles, ships or aircraft.
  • the sound-absorbing components can be specially shaped for this purpose, for example to follow the contours of car bodies.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Claims (10)

  1. Élément de construction absorbant le son, en particulier pour l'extérieur, comprenant une couche absorbante absorbant le son (01) comportant une surface d'entrée de son (02) et plusieurs profilés d'extinction (05) complètement encastrés dans la couche absorbante (01) et espacés les uns des autres, le profilé d'extinction (05) étant composé d'un matériau réfléchissant le son et possédant un intérieur de profilé (09) qui présente une face ouverte détournée de la surface d'entrée de son (02), caractérisé en ce que l'intérieur du profilé (09) est rempli totalement ou partiellement du matériau de la couche absorbante.
  2. Élément de construction absorbant le son selon la revendication 1, caractérisé en ce que le profilé d'extinction (05) présente au moins une surface d'entrée (06) dotée de nombreuse ouvertures d'entrée de son (07) et au moins une surface de réflexion fermée (08) se raccordant à la surface d'entrée, la surface de réflexion (08) et la face ouverte du profilé de distinction (05) étant plus espacées de la surface d'entrée de son (02) que la surface d'entrée (06) .
  3. Élément de construction absorbant le son selon la revendication 2, caractérisé en ce que la surface d'entrée (06) du profilé d'extinction (05) s'étend à distance et parallèlement à la surface d'entrée de son (02), et que des surfaces de réflexion (08) s'étendant bilatéralement se raccordent en angle à la surface d'entrée (06).
  4. Élément de construction absorbant le son selon la revendication 2, caractérisé en ce que les ouvertures d'entrée de son (07) perforent la surface d'entrée (06) et occupent une proportion de surface représentant 5 à 20 % de la surface d'entrée.
  5. Élément de construction absorbant le son selon une des revendications 1 à 4, caractérisé en ce que le profilé d'extinction (05) présente au moins une surface de collerette (08) qui s'étend parallèlement ou en angle par rapport à la surface d'entrée de son (02) et en dehors de l'intérieur du profilé (09).
  6. Élément de construction absorbant le son selon une des revendications 1 à 5, caractérisé en ce que la face ouverte des profilés d'extinction (05) est plus éloignée de la surface d'entrée de son (02) que d'une face arrière (04) opposée à la surface d'entrée de son (02) de la couche absorbante (01), la distance (a) jusqu'à la face arrière (04) de la couche absorbante (01) étant de préférence de 15 à 25 mm.
  7. Élément de construction absorbant le son selon une des revendications 1 à 6, caractérisé en ce que le profilé d'extinction (05) possède une section transversale en forme de U, en forme de V, en forme de chapeau ou en forme de tronc pyramidal.
  8. Élément de construction absorbant le son selon une des revendications 1 à 7, caractérisé en ce que la couche absorbante (01) possède une épaisseur de 50 à 70 mm et est composée d'un matériau absorbant poreux, en particulier de verre expansé, d'argile expansée, de pierre ponce, d'agrégat, de béton de bois, de fibres minérales ou d'un mélange de ces matériaux.
  9. Élément de construction absorbant le son selon une des revendications 1 à 8, caractérisé en ce que l'intérieur du profilé (09) possède une surface de section transversale de 600 à 3000 mm2.
  10. Paroi d'isolation phonique comportant une couche porteuse (10), caractérisé en ce que, au niveau de la couche porteuse (10), de nombreux éléments de construction absorbant le son selon une des revendications 1 à 9 sont posés.
EP17826166.5A 2016-12-19 2017-12-13 Élément de construction absorbant le son à profilés d'étouffement et paroi d'insonorisation Active EP3555370B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016124755.3A DE102016124755B3 (de) 2016-12-19 2016-12-19 Schallabsorbierendes Bauelement mit Löschungsprofilen sowie Schallschutzwand
PCT/EP2017/082596 WO2018114522A1 (fr) 2016-12-19 2017-12-13 Élément de construction absorbant le son à profilés d'étouffement et paroi d'insonorisation

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EP3555370A1 EP3555370A1 (fr) 2019-10-23
EP3555370B1 true EP3555370B1 (fr) 2022-11-16

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EP17826166.5A Active EP3555370B1 (fr) 2016-12-19 2017-12-13 Élément de construction absorbant le son à profilés d'étouffement et paroi d'insonorisation

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US (1) US11455978B2 (fr)
EP (1) EP3555370B1 (fr)
CN (1) CN110100060B (fr)
AU (1) AU2017380760B2 (fr)
DE (1) DE102016124755B3 (fr)
WO (1) WO2018114522A1 (fr)

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Publication number Priority date Publication date Assignee Title
US12203266B2 (en) * 2022-12-02 2025-01-21 Wiswong Technolgoy Corporation Construction combination with acoustic absorbing device

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US20190348018A1 (en) 2019-11-14
EP3555370A1 (fr) 2019-10-23
WO2018114522A1 (fr) 2018-06-28
AU2017380760A1 (en) 2019-07-11
CN110100060B (zh) 2022-10-28
DE102016124755B3 (de) 2018-02-15
US11455978B2 (en) 2022-09-27
CN110100060A (zh) 2019-08-06

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