EP3907341B1 - Corps acoustique pour éléments de plafond permettant de réduire le temps de réverbération du son - Google Patents

Corps acoustique pour éléments de plafond permettant de réduire le temps de réverbération du son Download PDF

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Publication number
EP3907341B1
EP3907341B1 EP21167192.0A EP21167192A EP3907341B1 EP 3907341 B1 EP3907341 B1 EP 3907341B1 EP 21167192 A EP21167192 A EP 21167192A EP 3907341 B1 EP3907341 B1 EP 3907341B1
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EP
European Patent Office
Prior art keywords
acoustic
acoustic element
ceiling
sound
cut
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP21167192.0A
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German (de)
English (en)
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EP3907341C0 (fr
EP3907341A1 (fr
Inventor
Karl Friedrich Enderes
Bernhard Leitner
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Green Code GmbH
Original Assignee
Green Code GmbH
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Publication date
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Publication of EP3907341C0 publication Critical patent/EP3907341C0/fr
Publication of EP3907341B1 publication Critical patent/EP3907341B1/fr
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B5/326—Floor structures wholly cast in situ with or without form units or reinforcements with hollow filling elements
    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/48—Special adaptations of floors for incorporating ducts, e.g. for heating or ventilating
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
    • E04B2001/848—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
    • E04B2001/848—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element
    • E04B2001/8485—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element the opening being restricted, e.g. forming Helmoltz resonators

Definitions

  • the invention relates to an acoustic body for ceiling elements to reduce the reverberation time of sound.
  • the invention further relates to an acoustic ceiling, comprising a first cover surface, a second cover surface spaced therefrom and at least one acoustic body arranged between the two cover surfaces.
  • the invention further relates to a method for producing such an acoustic ceiling.
  • an acoustic body can locally modify the parameters absorption, diffusion and/or reflection in such a way that the propagation behavior, amplitude and/or frequency distribution of sound in the room is changed.
  • porous materials such as fleece or ceiling coverings are known as acoustic bodies, but these reduce usable space, are associated with additional costs, make it difficult to install temperature control devices and / or loudspeakers, reduce the aesthetic appearance of the room and have a limited service life.
  • the disadvantage of the state of the art is that the acoustic bodies with their structural design only generate sound through interaction with damping materials, whereby an effective reduction in the reverberation time can only be achieved to a limited extent.
  • the acoustic bodies are subsequently stored in an already manufactured acoustic ceiling, as the acoustic bodies would otherwise absorb water and/or concrete.
  • by inserting the acoustic bodies into the spatial boundaries there is no possibility of connecting the acoustic bodies to one another or to piping, since the acoustic bodies are tied to the conditions of the spatial boundary.
  • the objectively technical object of the present invention is therefore to provide an acoustic body that is improved compared to the prior art, as well as an acoustic ceiling and a method for producing an acoustic ceiling, in which the disadvantages of the prior art are at least partially eliminated, and which are characterized in particular by a offer effective reduction of the reverberation time of sound and a flexible and comfortable integration into installation activities into a coherent assembly process.
  • the acoustic body has at least one first acoustic element and at least one second acoustic element, with at least one connecting device being provided with which the two acoustic elements can be releasably connected to one another, the first acoustic element having at least one sound inlet opening and at least one sound outlet opening spaced therefrom , the second acoustic element has at least one sound inlet opening and a top surface spaced therefrom, and the two acoustic elements can be connected to one another by means of the at least one connecting device in such a way that the at least one sound outlet opening of the at least one first Acoustic element can be brought at least partially into an overlap with the at least one sound inlet opening of the at least one second acoustic element.
  • This two-part embodiment of the acoustic body allows the at least one acoustic element to be connected to a first concrete layer, with insulation elements, connections and/or piping being able to be installed particularly conveniently afterwards. After the concrete layer has hardened, a fitter can enter the unfinished acoustic ceiling and carry out the installation work flexibly and without time pressure.
  • acoustic body After the acoustic body has been assembled, it is possible to separate the two acoustic elements again via the connecting device in order, for example, to introduce modified insulation elements or to modify installation elements. Furthermore, a combination with other noise-reducing components to acoustically optimize a building is particularly easy to achieve.
  • the at least one first acoustic element can be adapted to a variety of geometric configurations of the at least one second acoustic element, whereby only a modified second acoustic element has to be placed on the already existing first acoustic element if the requirements for the acoustic ceiling change.
  • the acoustic body is therefore versatile and flexible in use.
  • Reducing the sound in the room through the acoustic body is beneficial for the well-being of people in the room and, due to the lower decibel level, increases both the psychological well-being and the quality of communication.
  • a noise level can be reduced by the acoustic body in such a way that a risk to hearing - especially in a workplace where people are exposed to increased noise exposure - is effectively reduced. Both the reverberation time of sound and the amplitude of the sound can be greatly reduced by sound absorption generated by the acoustic body.
  • an acoustic ceiling comprising a first cover surface, a second cover surface spaced therefrom and at least one acoustic body made of plastic arranged between the two cover surfaces, which has at least one sound inlet opening and which is designed as such an acoustic body, the at least a sound inlet opening is connected to the first cover surface via at least one sound-conducting recess arranged in the acoustic ceiling.
  • the acoustic bodies can also be installed in wall or floor elements, with the acoustic ceiling being provided by an acoustic wall or an acoustic floor.
  • the acoustic body is made of plastic, the risk of concrete and/or splash water penetrating undesirably into the at least one acoustic body and/or the acoustic body bursting due to the concreting pressure is eliminated.
  • the sound-conducting recess in combination with the acoustic body, forms a Helmholtz resonator, with short- and medium-wave frequencies up to 2000 Hz in particular being absorbed particularly favorably by a formed cavity.
  • a recess with a smaller cross section than the acoustic body results in particularly effective filtering of sound frequencies in the Helmholtz resonator formed thereby.
  • the at least partially overlapping ensures that sound entering the acoustic ceiling from the room via the sound-conducting recess is passed on to the at least one acoustic body, with the sound being dampened in the acoustic body and only a fraction of the sound being reflected back into the room.
  • the at least one second acoustic element has at least one latching device on the at least one inner side surface, preferably in the form of a knob, and the at least one first acoustic element on the at least one outer side surface has at least one receiving means, preferably corresponding to the at least one latching device, preferably in the form of a groove, into which the at least one latching device can be snapped or snapped.
  • the arrangement of the locking device in the receiving means requires an acoustic body, which is splash-proof, and results in a fixed positioning of the two acoustic elements, which can be solved in a user-friendly manner if necessary. This prevents concrete from entering the acoustic body.
  • the at least one first acoustic element can be connected or connected to the at least one second acoustic element in a watertight, form-fitting and/or non-positive manner.
  • the two acoustic elements are connected in a form-fitting manner, an acoustic body with a particularly strong connection is generated. If the two acoustic elements are connected in a force-fitting manner, undesirable slipping of the two acoustic elements of the acoustic body is prevented.
  • the acoustic body can also be water-repellent and/or designed in such a way that at least splash water does not enter the acoustic body.
  • At least one stacking device preferably in the form of a vertical strut, is arranged on the at least one inner side surface of the at least one second acoustic element, over which at least two second acoustic elements can be stacked or are stacked.
  • At least one stacking device preferably in the form of a vertical strut, is arranged on at least one inner side surface of the at least one first acoustic element, over which at least two first acoustic elements can be stacked or stacked.
  • the at least one stacking device enables efficient transport of a plurality of first acoustic elements and/or second acoustic elements, which can be arranged one above the other via the stacking device in a space-saving manner, and/or a secure positioning of several acoustic elements during transport.
  • the at least one stacking device prevents the second acoustic elements from jamming and/or enables the stacking to be released in a force-saving manner, since the formation of a negative pressure between the second acoustic elements is reduced.
  • the at least one stacking device prevents the formation of negative pressure or suction between the first acoustic elements and/or the second acoustic elements, whereby the acoustic elements can be removed individually from a stack.
  • the at least one second acoustic element has at least one indentation, wherein an underside of the at least one indentation can be arranged or is arranged on the at least one first acoustic element, in particular when the two acoustic elements are connected via the connecting device.
  • the at least one indentation makes it easier to stack several second acoustic elements, since the at least one indentation acts as a guide.
  • the underside of the at least one indentation offers a defined storage position of the at least one second acoustic element on the at least one first acoustic element, in particular when connected via the at least one connecting device.
  • manufacturing inaccuracies in the production of the two acoustic elements can be compensated for by the at least one indentation.
  • a snug seating of the at least one second acoustic element on the at least one first acoustic element is promoted by the at least one indentation.
  • the at least one bulge serves as a saponification element, with the strength and/or rigidity of the acoustic body being increased, and larger loads - for example by a concrete layer located on the acoustic body - being able to be absorbed and/or transmitted by the acoustic body.
  • At least one spacing device preferably completely encircling the at least one outer side surface, is arranged on the at least one outer side surface of the at least one first acoustic element, wherein the at least one Distance device is spaced from a bottom of the at least one first acoustic element.
  • the at least one spacing device When the at least one first acoustic element is inserted into a concrete layer, the at least one spacing device provides an indicator of how far the at least one first acoustic element has already sunk into the concrete layer. Furthermore, the at least one spacing device can require a correct and/or precise alignment of the at least one first acoustic element in the concrete layer in order to be able to ensure sufficient anchoring in the concrete layer.
  • the at least one spacing device can be designed, for example, as a lip.
  • the at least one spacing device can be cohesively connected to the at least one first acoustic element or can be present as a separate component.
  • the at least one spacing device can generally be arranged on the at least one outside surface or on the at least one inside surface.
  • the at least one spacing device creates resistance when inserted into the concrete layer, which results in a more comfortable installation of the acoustic body and/or a defined enclosure of the at least one first acoustic element with concrete.
  • the at least one outer surface of the at least one first acoustic element and/or the at least one inner surface of the at least one second acoustic element have an angle in the range of 2° to 15°, particularly preferably between 6° and 10°, includes.
  • At least one positioning means preferably in the form of a magnet, a metal plate, a nail plate and/or a tool holder the at least one first acoustic element and / or the at least one second acoustic element is arranged.
  • Positioning can be done manually or, for example, using a robot.
  • the at least one first acoustic element and/or the at least one second acoustic element has a substantially rectangular cross-sectional shape.
  • the rectangular cross-sectional shape particularly favors the arrangement of the acoustic bodies in acoustic ceilings with rectangular recesses.
  • cross-sectional shape can also be circular, oval, or polygonal.
  • a side length of the at least one first acoustic element has at least 250 mm, preferably at least 350 mm.
  • the at least one first acoustic element has proven to be particularly advantageous when used in particularly extensive acoustic ceilings.
  • the at least one second acoustic element particularly preferably also has a side length of at least 250 mm.
  • At least one bulge preferably in the form of a stiffening strut, and/or at least one pipe connection, preferably in the form of a predetermined breaking point, to be arranged on the top surface and/or any outside surface 9 that may be present.
  • the technical effect of the at least one bulge is increased rigidity and/or strength of the acoustic body.
  • an arrangement of reinforcement on the acoustic body is favored since the at least one bulge can serve as a guide for orientation of the reinforcement.
  • an area within the predetermined breaking point can, for example, be removed and a pipe inserted into the pipe connection.
  • the lateral play can be in the range from 0.1 mm to 0.5 mm, particularly preferably in the range from 0.2 mm to 0.3 mm.
  • This lateral play has proven to be an optimal compromise between effective waterproofing and comfortable assembly of the acoustic body.
  • the at least one first acoustic element and/or the at least one second acoustic element is formed, preferably entirely, from plastic, preferably produced via injection molding, 3D printing or vacuum drawing.
  • a particularly light and/or splash-proof acoustic body with sufficient rigidity and/or strength can be created.
  • complex geometries can be integrated into the acoustic body in a cost- and/or material-friendly manner.
  • the acoustic bodies made of plastic particularly preferably have a load capacity of 200 kg.
  • acoustic bodies made of chipboard or wood are also conceivable.
  • reinforcing elements can be produced in a particularly time-saving manner, whereby a concreting pressure of over 50 kN/m 2 can be compensated for with a plastic wall thickness of essentially 3 mm of the acoustic body.
  • At least one insulating element preferably in the form of fleece, foamed plastic, inorganic porous materials and/or organic porous materials, within the acoustic body and/or at least in some areas, preferably completely, within the at least one inner side surface of the at least one first acoustic element is arranged.
  • Sound can be reduced particularly effectively - in particular through absorption - using at least one insulating element in the acoustic body.
  • a material of the at least one insulating element is generally arbitrary. Porous materials have proven to be particularly beneficial in terms of noise reduction. In addition, porous materials have a lower specific density. Particularly preferably, the at least one insulating element is made of non-combustible fibers made of mineral substances. Furthermore, with the at least one insulating element, classic insulation of the acoustic ceiling in the area of the acoustic body can be dispensed with, since heat conduction through the acoustic body is effectively reduced by the at least one insulating element.
  • the at least one acoustic body is designed separately from the acoustic ceiling.
  • the requirements of the acoustic ceiling can be addressed in a particularly favorable manner through a structural design of the acoustic body and/or an adaptation to existing requirements can be carried out.
  • the at least one acoustic body encloses at least one recess, preferably exactly two recesses, particularly preferably exactly four recesses.
  • the acoustic ceiling comprises reinforcement, preferably in the form of cross reinforcement, and/or an air conditioning device.
  • the acoustic bodies are designed in such a way that the acoustic bodies can be integrated into any ceiling element.
  • the use of an air conditioning system and cross reinforcement with acoustic bodies in ceiling elements creates a stable acoustic ceiling, which enables a pleasant feeling of space.
  • the air conditioning device is to be understood as meaning any heating systems and/or cooling systems which can reduce and/or increase the temperature of a room and/or a ceiling element, in particular in a regulating manner.
  • the reinforcement comprises transverse struts and longitudinal struts, with the at least one recess being arranged between the transverse struts and longitudinal struts and/or the air conditioning device comprising pipe sections, with the at least one recess being arranged between the pipe sections.
  • the reinforcement creates a stable acoustic ceiling. If the recesses are arranged between the transverse and longitudinal struts, sound is generated from the room directly into the acoustic body, without a reflection being generated on the transverse and longitudinal struts back into the room.
  • the acoustic ceiling comprises lattice girders with lower chords and upper chords, with the at least one acoustic body being arranged between the upper chords.
  • the two-part embodiment has the positive effect that the acoustic ceiling can be prefabricated in the factory and then the partially manufactured acoustic ceiling can be delivered to a construction site with at least one first acoustic element already integrated, whereby time resources can be saved on the construction site and / or installation work, which can only be done on site at the construction site, can be carried out on the construction site to produce the acoustic ceiling.
  • the at least one recess body is arranged on the concreting platform via at least one magnet, preferably by at least one gauge and/or at least one robot.
  • the magnet can be designed as a permanent magnet or as an electromagnet, preferably activated via a button.
  • the electromagnet can comprise an actuating element accessible from a top side of the electromagnet, the electromagnet being able to be arranged in two operating positions, the electromagnet being at a first distance from the concreting platform in a first operating position and a changed distance from the concreting platform in a second operating position Concreting platform has.
  • the actuating element is provided to move the electromagnets from the first to the second operating position or vice versa.
  • the at least one recess body is laterally enclosed with 8 cm to 15 cm of concrete before the at least one first acoustic element is inserted into the concrete.
  • the at least one magnet is arranged between the concreting platform and the recess body.
  • a magnet can also be arranged as a receiving aid on an upper side of the recess body for positioning the recess body.
  • the at least one magnet prevents the at least one recess body from slipping undesirably. If the acoustic ceiling is lifted from the concreting platform to form the recesses, the recess bodies remain located on the concreting platform due to the magnetic connection to the concreting platform.
  • a lighting element or a ventilation device is arranged on the concreting platform instead of a recess body and/or a line connection, a ceiling box, a lattice girder or reinforcement is arranged on or next to the recess bodies and/or acoustic bodies.
  • the lighting element can also be arranged instead of the lighting element and/or above the at least one recess element.
  • the at least one recess in the acoustic ceiling thus formed can be equipped with a variety of functions.
  • the line connection can, for example, connect the acoustic bodies in series and include an electronics line and/or a ventilation pipe for connection to a vent.
  • At least one insulating element is introduced into the at least one first acoustic element before the at least one second acoustic element is put on.
  • the at least one insulation element can be flexibly adapted to the conditions such as piping between the acoustic bodies.
  • At least one second acoustic element has been placed at least one line connection, preferably in the form of a power connection, a pipe connection and/or a ventilation connection, is arranged between two second acoustic elements and/or between an acoustic body and a ventilation device or ceiling box.
  • the arrangement of the at least one line connection, the pipe connection between the two second acoustic elements and/or between the acoustic body and the ventilation device or ceiling box can also take place before the at least one second acoustic element is put on.
  • At least one further reinforcement is arranged above the at least one second acoustic element before enclosing the at least one second acoustic element.
  • the at least one further reinforcement makes a particularly stable acoustic ceiling possible, with a load of the acoustic ceiling - in particular via stiffening struts - being able to be distributed to a large number of acoustic bodies.
  • the at least one recess body is removed, preferably before the at least one second acoustic element is surrounded with concrete, to form the at least one sound-conducting recess, it being preferably provided that in a subsequent method step at least one cover body, preferably in the form of plastic, coarse-grain acoustic paint and / or open-pored outer cladding, in an area around which at least one sound-conducting recess and / or in which at least one sound-conducting recess is arranged.
  • the at least one recess body can have a dent on the top to make it easier to detach it from the acoustic ceiling, especially with compressed air.
  • the at least one cover body creates an acoustic ceiling with an aesthetically pleasing appearance.
  • the cover bodies can reduce sound before entering the acoustic body and/or before re-entering the room, thereby reducing the reverberation time.
  • Fig. 1a to Fig. 1c show three ceiling elements 26a from the prior art.
  • the acoustic bodies 1 in question can be used as an acoustic ceiling 26 according to the invention in each of these ceiling elements 26a.
  • An example is the acoustic ceiling 26 for the in Fig. 1c illustrated embodiment shown; However, this should not be seen as limiting to this exemplary embodiment.
  • Fig. 1a shows a ceiling element 26a with reinforcement 30 with cross struts 32a and longitudinal struts 32b as well as lattice girders 34 with upper chords 36 and lower chords 35.
  • Fig. 1b shows a ceiling element 26a with cross reinforcement, the cross struts 32a and longitudinal struts 32b of the reinforcement 30 having an increased thickness and a changed positioning relative to one another to increase the stability of the ceiling element 26a.
  • Fig. 1c shows a ceiling element 26a with a reinforcement 30 and an air conditioning device 31 with pipe sections 33.
  • a heating and cooling system is integrated in the ceiling element 26a, heat or cold being quickly released to a room through the pipe sections 33 via the ceiling element 26 can.
  • Fig. 2 shows an acoustic ceiling 26 with a reinforcement 30 in the form of a cross reinforcement, lattice girders 34, an air conditioning device 31 and a large number of acoustic bodies 1.
  • a reinforcement 30 in the form of a cross reinforcement
  • lattice girders 34 lattice girders 34
  • an air conditioning device 31 a large number of acoustic bodies 1.
  • the acoustic bodies 1 are shown in the side view located above and not shown in the top view located below.
  • the acoustic ceiling 26 comprises a first cover surface 27, a second cover surface 28 spaced therefrom and acoustic bodies 1 made of plastic 24 arranged between the two cover surfaces 27, 28.
  • the acoustic bodies 1 each have a sound inlet opening 5, the sound inlet opening 5 having two in the acoustic ceiling 26 arranged sound-conducting recesses 29 are connected to the first cover surface 27.
  • the acoustic bodies 1 are formed separately from the acoustic ceiling 26 and the acoustic bodies 1 each enclose two recesses 29.
  • a number of recesses 29 enclosed by the acoustic body 1 are generally any.
  • the acoustic body 1 can also enclose exactly four recesses 29, for example.
  • the reinforcement 30 includes transverse struts 32a and longitudinal struts 32b, with the recesses 29 being arranged between the transverse struts 31 and longitudinal struts 32.
  • the air conditioning device 31 includes pipe sections 33, with the recesses 29 being arranged between the pipe sections 33.
  • the lattice girders 34 include lower chords 35 and upper chords 36, with the acoustic bodies 1 being arranged between the upper chords 36 and the lower chords 35 of separate lattice girders 34.
  • Fig. 3a shows a first acoustic element 2, with stacking devices 14 in the form of a vertical strut being arranged on the inside surfaces 10 of the first acoustic element 2, over which a large number of first acoustic elements 2 can be stacked.
  • the first acoustic element 2 has a rectangular cross-sectional shape 20.
  • Fig. 3b shows the first acoustic element 2 from a bottom 16 in a perspective view, with a spacing device 17 which runs completely around the outer side surfaces 9 being arranged on the outer side surfaces 9 of the first acoustic element 2.
  • the spacing device 17 is spaced from the underside 16 of the first acoustic element 2.
  • Fig. 3c shows an enlarged detail Fig. 3b , whereby it can be seen that a region of the outer side surfaces 9 of the first acoustic element 2 can be inserted into concrete via the spacing device 17 and a second acoustic element 3 can be connected to the first acoustic element 2 via receiving means 13 of the first acoustic element 2.
  • Fig. 4a shows a second acoustic element 3, wherein the second acoustic element 3 has indentations 15, with an underside 16 of the indentations 15 a first acoustic element 2 can be arranged when the two acoustic elements 2, 3 are connected via the connecting device 4.
  • a bulge 22 in the form of a stiffening strut is arranged on a top surface 7.
  • pipe connections 23 are arranged in the form of a predetermined breaking point, on which line connections 44 can be arranged on the second acoustic element 3 by breaking out the predetermined breaking points.
  • Fig. 4b shows the second acoustic element 3 from an underside in a perspective view, with stacking devices 14 in the form of a vertical strut being arranged on the inner side surfaces 10 of the second acoustic element 3, over which a large number of second acoustic elements 3 can be stacked.
  • Fig. 4c shows an enlarged detail Fig. 4b , whereby it can be seen that a connection to a first acoustic element 2 can be established via latching devices 12.
  • Fig. 5 shows two stacked second acoustic elements 3 in a side view located above in a sectional view in the direction of the arrow of the top view of the second acoustic element 3 located below.
  • the indentations 15 are guided into one another and the two second acoustic elements 3 contact each other via the stacking devices 4.
  • the stacking devices 4 create When the stacking is broken, there is essentially no negative pressure between the two second acoustic elements 3.
  • Fig. 6 shows the second acoustic element with a rectangular cross-sectional shape 20 in a top view located on the left and a sectional view located on the right in the direction of the arrow.
  • the inner side surfaces 10 of the second acoustic element 3 enclose an angle 18 of essentially 18°.
  • the outer side surfaces 9 of the first acoustic element 2 generally have an identical angle 18 as the inner side surfaces 19 of the second acoustic element 3.
  • a latching device 12 can be seen in the form of a knob, which is materially connected to the inner side surface 19 of the second acoustic element 3.
  • the latching device 12 can also be applied to the inside surface 19 in another way.
  • Fig. 7a shows a second acoustic element 3 in a higher embodiment than Fig. 4a .
  • Both exemplary embodiments of the second acoustic element 3 can be used with the first acoustic element 2 Fig. 3a to form an acoustic body 1.
  • Fig. 7b differs from Fig. 7a only in that the second acoustic element is shown in a top view.
  • the bulge 22 is designed in a cross shape for reasons of strength.
  • the indentations 15 are arranged below the bulge 22 and extend to the top surface 7.
  • Fig. 8 shows an acoustic body 1 for ceiling elements 26a for reducing the reverberation time of sound, the acoustic body 1 having a first acoustic element 2 and a second acoustic element 3, a connecting device 4 being provided with which the two acoustic elements 2, 3 can be releasably connected to one another.
  • the side view is shown in section in the direction of the arrow.
  • the first acoustic element 2 has a sound inlet opening 5 and a sound outlet opening 6 spaced therefrom.
  • the second acoustic element 3 has a sound inlet opening 5 and a cover surface 7 spaced therefrom.
  • the two acoustic elements 2, 3 are connected to one another by means of the connecting device 4 in such a way that the sound outlet opening 6 of the first acoustic element 2 overlaps 8 with the sound inlet opening 5 of the second acoustic element 3. Sound is conducted from the first acoustic element 2 into the second acoustic element 3 up to the top surface 7.
  • the two acoustic elements 2, 3 have outer side surfaces 9 and inner side surfaces 10, the second acoustic element 3 with the inner side surfaces 10 of the second acoustic element 3 being placed over the outer side surfaces 9 of the first acoustic element 2 with a lateral clearance 11 of essentially 0.2 mm.
  • first acoustic element 2 with the inner side surfaces 10 of the first acoustic element 2 can also be slipped over the outer side surfaces 9 of the second acoustic element 3 or can be slipped over without play.
  • the first acoustic element 2 and the second acoustic element 3 are made entirely of plastic 24.
  • the two acoustic elements 2, 3 are manufactured via injection molding. In general, the two acoustic elements 2, 3 can also be manufactured by 3D printing or vacuum drawing.
  • the second acoustic element 3 has latching devices 12 in the form of a knob on the inside surfaces 10 and the first acoustic element 2 has receiving means 13 corresponding to the latching devices 12 on the outside surfaces 9 in the form of a groove into which the latching devices 12 are latched.
  • the first acoustic element 2 is connected to the second acoustic element 3 in a form-fitting and non-positive manner.
  • a side length 21 of the first acoustic element 2 is essentially 350 mm.
  • Fig. 10a-10f Explain in the schematically illustrated side views on the right a method for producing an acoustic ceiling 26, with a schematically illustrated top view on the left being shown to illustrate the process steps.
  • Fig. 10a shows that the recess bodies 37 are arranged on the concreting platform 38 by a robot 41 via two magnets 40.
  • the recess bodies 37 have positioning means 19 in the form of a metal plate.
  • a lighting element 42 and a ventilation device 43 are arranged on the concreting platform 38 instead of a recess body 37.
  • Fig. 10b shows that lattice girders 34 and reinforcement 30 are arranged next to the recess bodies 37.
  • Fig. 10c shows that concrete 39 encloses the recess bodies 37 and the ventilation device 43 in some areas and the lighting element 42 at least in some areas.
  • Fig. 10d shows that the first acoustic elements 2 are inserted in areas into the not yet hardened concrete 39 (visible on the right).
  • the concrete 39 is then hardened.
  • the ceiling element 26a can, for example, be transported to the construction site, with the recess bodies being removed.
  • the recess bodies 1 are generally removed before the second acoustic elements 3 are surrounded with concrete 39 to form the sound-conducting recesses 29.
  • a line connection 44 in the form of a piping is arranged on the ventilation device 43 and Insulation elements 25 inserted into the first acoustic elements 2 (visible on the left).
  • the recess bodies 37 have already been removed, with sound-conducting recesses 29 and the ventilation device 43 being visible in a top view.
  • the lighting device 42 was also indicated; However, the lighting device 42 can generally be covered with concrete 39 at least in some areas.
  • another line connection 44 such as a power connection to the lighting device 42, can also be arranged.
  • Insulating elements 25 are inserted into the first acoustic elements 2, the insulating element 25 being adapted to a geometry of the ventilation device 43.
  • the insulating element 25 is arranged in the form of fleece within the acoustic body 1 completely within the inner side surfaces 10 of the first acoustic element 2.
  • the insulating element 25 acts as a heat insulator and can increase the reduction of sound.
  • a cover body 45 in the form of plastic has already been arranged in a sound-conducting recess 29.
  • coarse-grained acoustic paint and/or open-pored outer cladding can also be arranged in an area around the at least one sound-conducting recess 29 in a downstream process step.
  • Fig. 10e shows that second acoustic elements 3 are placed over the first acoustic elements 2, with a connection between the two acoustic elements 2, 3 being established via a connecting device 4 to form the acoustic body 1.
  • Positioning means 19 in the form of a metal plate are on the second acoustic elements 3 for positioning second acoustic elements 3 arranged.
  • the first acoustic elements 2 can also have positioning means 19 - for example in the form of a magnet 30 or a tool holder.
  • line connections 44 in the form of a power connection, a pipe connection and a ventilation connection are arranged between two second acoustic elements 3 and between an acoustic body 1 and the ventilation device 43.
  • a ceiling box can be integrated via the line connection 44.
  • Fig. 10f shows that before enclosing the second acoustic elements 3 with concrete 39, a further reinforcement 30 is arranged on the acoustic bodies 1 and the reinforcement 30 is enclosed together with the acoustic bodies 1 with concrete 39 to form the acoustic ceiling 26, with the not yet hardened concrete being shaken and is cured.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Building Environments (AREA)

Claims (15)

  1. Corps acoustique (1) pour des éléments de plafond (26a) pour réduire un temps de réverbération du son, dans lequel le corps acoustique (1) présente au moins un premier élément acoustique (2) et au moins un deuxième élément acoustique (3), dans lequel au moins un dispositif de liaison (4) est prévu, avec lequel les deux éléments acoustiques (2, 3) peuvent être reliés l'un à l'autre de manière amovible, le premier élément acoustique (2) présente au moins une ouverture d'entrée du son (5) et au moins une ouverture de sortie du son (6) tenue à distance de celle-ci, le deuxième élément acoustique (3) présente au moins une ouverture d'entrée du son (5) et une surface couvrante (7) tenue à distance de celle-ci, et les deux éléments acoustiques (2, 3) peuvent être reliés l'un à l'autre au moyen de l'au moins un dispositif de liaison (4) de telle manière que l'au moins une ouverture de sortie de son (6) de l'au moins un premier élément acoustique (2) peut être amenée au moins par endroits en chevauchement (8) avec l'au moins une ouverture d'entrée de son (5) de l'au moins un deuxième élément acoustique (3), dans lequel les deux éléments acoustiques (2, 3) présentent au moins une surface latérale extérieure (9) et au moins une surface latérale intérieure (10), caractérisé en ce que
    l'au moins un deuxième élément acoustique (3) présente, sur l'au moins une surface latérale intérieure (10), au moins un dispositif d'enclenchement (12) et l'au moins un premier élément acoustique (2) présente sur l'au moins une surface latérale extérieure (9) au moins un moyen de réception (13), dans lequel l'au moins un dispositif d'enclenchement (12) peut être enclenché ou est enclenché, dans lequel l'au moins un deuxième élément acoustique (3) peut être enfilé ou est enfilé par-dessus l'au moins un premier élément acoustique (2).
  2. Corps acoustique (1) selon la revendication 1, dans lequel
    l'au moins un premier élément acoustique (2) peut être enfilé ou est enfilé avec l'au moins une surface latérale intérieure (10) de l'au moins un premier élément acoustique (2) par-dessus l'au moins une surface latérale extérieure (9) de l'au moins un deuxième élément acoustique (3), en particulier avec un jeu latéral (11) ou sans jeu.
  3. Corps acoustique selon la revendication 2, dans lequel
    - l'au moins un dispositif d'enclenchement (12) est présent sous la forme d'une protubérance et le moyen de réception (13) est réalisé de manière à correspondre à l'au moins un dispositif d'enclenchement (12) et/ou sous la forme d'une rainure,
    - au moins un dispositif d'empilement (14), de préférence sous la forme d'une entretoise verticale, par l'intermédiaire duquel au moins deux deuxièmes éléments acoustiques (3) peuvent être empilés ou sont empilés, est disposé sur l'au moins une surface latérale intérieure (10) de l'au moins un deuxième élément acoustique (3),
    - au moins un dispositif d'empilement (14), de préférence sous la forme d'une entretoise verticale, par l'intermédiaire duquel au moins deux premiers éléments acoustiques (2) peuvent être empilés ou sont empilés, est disposé sur au moins une surface latérale intérieure (10) de l'au moins un premier élément acoustique (2), et/ou
    - le jeu latéral (11) se situe dans la plage de 0,1 mm à 0,5 mm, de manière particulièrement préférée dans la plage de 0,2 mm à 0,3 mm.
  4. Corps acoustique (1) selon l'une quelconque des revendications précédentes 1 à 3, dans lequel l'au moins un premier élément acoustique (2) peut être relié ou est relié de manière étanche à l'eau, par complémentarité e forme et/ou à force à l'au moins un deuxième élément acoustique (3) et/ou l'au moins un deuxième élément acoustique (3) présente au moins une dentelure concave (15), dans lequel un côté inférieur (16) de l'au moins une dentelure concave (15) peut être disposé ou est disposé sur l'au moins un premier élément acoustique (2), en particulier lors d'une liaison des deux éléments acoustiques (2, 3) par l'intermédiaire du dispositif de liaison (4).
  5. Corps acoustique (1) selon l'une quelconque des revendications 2 à 4, dans lequel au moins un système d'écartement (17) s'étendant en périphérie de préférence totalement autour de l'au moins une surface latérale extérieure (9) est disposé sur l'au moins une surface latérale extérieure (9) de l'au moins un premier élément acoustique (2), dans lequel l'au moins un système d'écartement (17) est tenu à distance d'un côté inférieur (16) de l'au moins un premier élément acoustique (2) et/ou l'au moins une surface latérale extérieure (9) de l'au moins un premier élément acoustique (2) et/ou l'au moins une surface latérale intérieure (10) de l'au moins un deuxième élément acoustique (3) forment un angle (18) dans la plage de 2° à 15°, de manière particulièrement préférée entre 6° et 10°.
  6. Corps acoustique (1) selon l'une quelconque des revendications 1 à 5, dans lequel
    - au moins un moyen de positionnement (19), de préférence sous la forme d'un aimant (40), d'une plaque métallique, d'un disque à clous et/ou d'un logement porte-outil, est disposé sur l'au moins un premier élément acoustique (2) et/ou sur l'au moins un deuxième élément acoustique (3),
    - l'au moins un premier élément acoustique (2) et/ou l'au moins un deuxième élément acoustique (3) présentent une forme de section transversale (20) sensiblement rectangulaire,
    - une longueur latérale (21) de l'au moins un premier élément acoustique (2) présente au moins 250 mm, de préférence au moins 350 mm, et/ou
    - au moins une dentelure convexe (22), de préférence sous la forme d'une entretoise de renfort, et/ou un raccord de tube (23), de préférence sous la forme d'un point de rupture théorique, sont disposés sur la surface couvrante (7) et/ou une surface latérale extérieure (9) éventuellement présente.
  7. Corps acoustique (1) selon l'une quelconque des revendications 1 à 6, dans lequel l'au moins un premier élément acoustique (2) et/ou l'au moins un deuxième élément acoustique (3) sont réalisés de préférence en totalité à partir de matière plastique (24), de préférence sont fabriqués par coulée par injection, par impression 3D ou par emboutissage sous vide.
  8. Corps acoustique (1) selon l'une quelconque des revendications 2 à 7, dans lequel au moins un élément isolant (25), de préférence sous la forme d'un non-tissé, d'une matière plastique expansée, de matériaux poreux inorganiques et/ou de matériaux poreux organiques, est disposé à l'intérieur du corps acoustique (1) et/ou au moins par endroits, de préférence en totalité, à l'intérieur de l'au moins une surface latérale intérieure (10) de l'au moins un premier élément acoustique (2).
  9. Plafond acoustique (26), comprenant une première surface couvrante (27), une deuxième surface couvrante (28) tenue à distance de celle-ci et au moins un corps acoustique (1) en matière plastique (24) disposé entre les deux surfaces couvrantes (27, 28), lequel présente au moins une ouverture d'entrée de son (5) et lequel est réalisé selon l'une quelconque des revendications précédentes, dans lequel l'au moins une ouverture d'entrée de son (5) est reliée à la première surface couvrante (27) par l'intermédiaire d'au moins un évidement (29) conducteur de son disposé dans le plafond acoustique (26).
  10. Plafond acoustique (26) selon la revendication 9, dans lequel
    - l'au moins un corps acoustique (1) est réalisé de manière séparée du plafond acoustique (26),
    - l'au moins un corps acoustique (1) renferme au moins un évidement (29), de manière préférée précisément deux évidements (29), de manière particulièrement préférée précisément quatre évidements (29),
    - le plafond acoustique (26) comprend une armature (30), de préférence sous la forme d'une armature croisée, et/ou un système de climatisation (31), et/ou
    - le plafond acoustique (26) comprend des supports de grille (34) avec des membrures inférieures (35) et des membrures supérieures (36), dans lequel l'au moins un corps acoustique (1) est disposé entre les membrures supérieures (36).
  11. Plafond acoustique (2) selon la revendication 10, dans lequel l'armature (30) comprend des entretoises transversales (32a) et des entretoises longitudinales (32b), dans lequel l'au moins un évidement (29) est disposé entre les entretoises transversales (31) et les entretoises longitudinales (32) et/ou le système de climatisation (31) comprend des tronçons de conduits tubulaires (33), dans lequel l'au moins un évidement (29) est disposé entre les tronçons de conduits tubulaires (33).
  12. Procédé de fabrication d'un plafond acoustique (26) selon l'une quelconque des revendications 9 à 11, caractérisé par les étapes de procédé à effectuer de préférence dans un ordre chronologique :
    - au moins un corps d'évidement (37) est disposé sur une plateforme de bétonnage (38) pour réaliser l'au moins un évidement (29) conducteur de son,
    - l'au moins un corps d'évidement (37) est entouré au moins par endroits de béton (39),
    - l'au moins un corps acoustique (1) est inséré dans le béton (39) qui n'a pas encore durci, dans lequel l'au moins une ouverture d'entrée de son (5) chevauche au moins par endroits l'au moins un corps d'évidement (37), et
    - l'au moins un corps acoustique (1) est entouré au moins par endroits de béton (39).
  13. Procédé selon la revendication 12, dans lequel l'au moins un corps acoustique (1) est réalisé selon l'une quelconque des revendications 1 à 8, et dans lequel
    - l'au moins un premier élément acoustique (2) est inséré dans le béton (39) qui n'a pas encore durci, par l'intermédiaire d'au moins deux corps d'évidement (37),
    - le béton (39) est éventuellement durci,
    - l'au moins un deuxième élément acoustique (3) est placé sur l'au moins un premier élément acoustique (2), et
    - l'au moins un deuxième élément acoustique (3) et/ou l'au moins un premier élément acoustique (2) sont entourés au moins par endroits de béton (39).
  14. Procédé selon la revendication 12 ou 13, dans lequel
    - l'au moins un corps d'évidement (37) est disposé sur la plateforme de bétonnage (38) par l'intermédiaire d'au moins un aimant (40), de préférence par au moins un enseignement et/ou au moins un robot (41),
    - un élément d'éclairage (42) ou un système d'aération (43) est disposé en lieu et place d'un corps d'évidement (37) sur la plateforme de bétonnage (38) et/ou un raccord de conduit (44), un boîtier de plafond, un support de grille (34) et/ou une armature (30) est disposé/disposée sur ou à côté des corps d'évidement (37) et/ou des corps acoustiques (1), et/ou
    - au moins un élément isolant (25) est introduit dans l'au moins un premier élément acoustique (3) avant de placer l'au moins un deuxième élément acoustique (3).
  15. Procédé selon la revendication 13, dans lequel
    - après le placement de l'au moins un deuxième élément acoustique (3), au moins un raccord de conduit (44), de préférence sous la forme d'un raccord de courant, d'un raccord tubulaire et/ou d'un raccord d'aération, est disposé entre deux éléments acoustiques (3) et/ou entre un corps acoustique (1) et un dispositif d'aération (43) ou un boîtier de plafond,
    - au moins une autre armature (30) est disposée au-dessus de l'au moins un deuxième élément acoustique (3) avant d'entourer l'au moins un deuxième élément acoustique (3), et/ou
    - l'au moins un corps d'évidement (1), est retiré, de préférence avant d'entourer l'au moins un deuxième élément acoustique (3) de béton (39), pour former l'au moins un évidement (29) conducteur de son, dans lequel il est prévu de préférence qu'au moins un corps de recouvrement (45), de préférence sous la forme de matière plastique, de couleur acoustique à gros grains et/ou d'habillage extérieur à pores ouverts, est disposé dans une zone autour de l'au moins un évidement conducteur de son (29) et/ou dans l'au moins un évidement conducteur de son (29) lors d'une étape de procédé située en aval.
EP21167192.0A 2020-05-04 2021-04-07 Corps acoustique pour éléments de plafond permettant de réduire le temps de réverbération du son Active EP3907341B1 (fr)

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ATA50377/2020A AT522885B1 (de) 2020-05-04 2020-05-04 Akustikkörper, insbesondere für Deckenelemente, zur Reduktion einer Nachhallzeit von Schall

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EP4223951B1 (fr) * 2022-02-03 2025-10-29 Saqib Hashim Aziz Système multifonctionel et procédé de réalisation d'éléments structuraux, ainsi que leur procédé d'optimisation

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Publication number Priority date Publication date Assignee Title
US3442058A (en) * 1968-05-31 1969-05-06 Eng Collaborative Ltd The Concrete floor construction with duct-forming voids
FR2395366A1 (fr) * 1977-06-22 1979-01-19 Babu Jean Pierre Element prefabrique double de coffrage et parement pour la construction de dalles de plafond en beton
JP2004100383A (ja) * 2002-09-12 2004-04-02 Yoshida Komuten:Kk 型枠合板残材を有効利用したボイドスラブの構築方法
BE1015117A5 (nl) * 2002-09-23 2004-10-05 Belvi Nv Prefabelement en werkwijze voor het vervaardigen ervan.
DE102010025445A1 (de) 2010-02-13 2011-08-18 Bühler, Armin, 87733 Schallabsorbierender Baukörper
ES2356546B2 (es) * 2010-06-28 2011-09-14 Alberto Alarcón García Un forjado o elemento estructural similar aligerado por el que pueden discurrir instalaciones registrables.
IT201600083287A1 (it) * 2016-08-08 2018-02-08 T P S S R L Elemento di alleggerimento per l'edilizia.
DE102016118298B8 (de) * 2016-09-28 2018-01-18 Heinze Gruppe Verwaltungs Gmbh Betondecke, Bausatz zur Herstellung einer Betondecke und Verfahren zur Herstellung einer Betondecke
CN107268990A (zh) * 2017-06-27 2017-10-20 徐焱 一种加底盖的塑料模壳
AU2019101738B4 (en) * 2018-07-02 2021-02-11 Neumann Steel Pty Ltd A void forming module and system therefor

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HUE065404T2 (hu) 2024-05-28
AT522885B1 (de) 2021-03-15
EP3907341C0 (fr) 2023-11-22
PL3907341T3 (pl) 2024-04-22
EP3907341A1 (fr) 2021-11-10

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