WO2017055124A1 - Schallabsorbierendes element - Google Patents
Schallabsorbierendes element Download PDFInfo
- Publication number
- WO2017055124A1 WO2017055124A1 PCT/EP2016/072165 EP2016072165W WO2017055124A1 WO 2017055124 A1 WO2017055124 A1 WO 2017055124A1 EP 2016072165 W EP2016072165 W EP 2016072165W WO 2017055124 A1 WO2017055124 A1 WO 2017055124A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sound
- facing
- openings
- absorbing element
- support plate
- Prior art date
Links
- 230000000694 effects Effects 0.000 claims abstract description 9
- 230000006641 stabilisation Effects 0.000 claims description 35
- 238000011105 stabilization Methods 0.000 claims description 35
- 238000003801 milling Methods 0.000 claims description 13
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- 238000000034 method Methods 0.000 claims description 7
- 239000011094 fiberboard Substances 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 229910052602 gypsum Inorganic materials 0.000 claims description 3
- 239000010440 gypsum Substances 0.000 claims description 3
- 239000011120 plywood Substances 0.000 claims description 3
- 229920002522 Wood fibre Polymers 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims description 2
- 239000004922 lacquer Substances 0.000 claims description 2
- 229920003002 synthetic resin Polymers 0.000 claims description 2
- 239000000057 synthetic resin Substances 0.000 claims description 2
- 239000002025 wood fiber Substances 0.000 claims description 2
- 239000006096 absorbing agent Substances 0.000 abstract description 3
- 230000000087 stabilizing effect Effects 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 description 22
- 230000008901 benefit Effects 0.000 description 16
- 230000009467 reduction Effects 0.000 description 9
- 238000000576 coating method Methods 0.000 description 5
- 238000005253 cladding Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
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- 238000004026 adhesive bonding Methods 0.000 description 2
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- 230000002349 favourable effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
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- 230000001070 adhesive effect Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B1/86—Sound-absorbing elements slab-shaped
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B2001/8457—Solid slabs or blocks
- E04B2001/8461—Solid slabs or blocks layered
-
- 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
-
- 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
- E04B2001/849—Groove or slot type openings
-
- 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
- E04B2001/8495—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element the openings going through from one face to the other face of the element
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
- E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
- E04F13/0867—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements having acoustic absorption means on the visible surface
Definitions
- the present invention relates to a sound absorbing member and a method of manufacturing a sound absorbing member.
- the acoustics often play an important role in the furnishing of public areas, especially in public buildings, but also in the home and furniture industry.
- suitable sound-absorbing elements for the cladding of walls should be provided, which should ensure the intended purpose corresponding acoustic properties of the room.
- the sound absorbing elements are typically subject to a number of requirements, e.g. good absorption values, low cost, sufficient mechanical stability, good aesthetics, ease of installation, adequate fire protection properties, etc.
- Sound-absorbing elements which comprise a carrier plate with through-holes, a perforated cover layer on the front side of the carrier plate and a porous absorption layer, such as fleece, on the back side of the carrier plate.
- the carrier plate and the cover layer with the holes serve as sound-permeable layers for protection against eyes and eyes, wherein the sound absorption is achieved by the absorption layer on the back of the carrier plate.
- Helmholtz resonators constitute, in which the mass of air in the holes with the sound field respond and the incident sound energy is converted into kinetic energy of the air mass se.
- Helmholtz resonators may not require a separate porous absorption layer, but may be combined with such.
- a better appearance of the sound-absorbing element can be achieved by a microperforated cover layer.
- a sound absorbing device having a plate-shaped core and first and second surfaces.
- a first coating and a second coating cover the first and second surfaces of the core, respectively.
- the first and the second coating are provided with grid-like arranged holes.
- the core is provided with a number of substantially parallel aligned grooves which penetrate the two surfaces of the core. By means of bonding, the coatings are glued to the surfaces, wherein a part of the holes of the coatings open into the grooves of the core.
- For an improved static behavior of the core along a frame-like edge region is designed groove-free.
- a further improvement of the torsional stiffness is achieved in that the core has a number of struts, which are also groove-free, so that the core is divided by the number of struts in several areas with grooves.
- the cover layers arranged on both sides of the core against bending and twisting.
- WO201 3/1 59240 shows a resonator with a cover layer with a microperforation; a carrier layer having a plurality of through openings such as in particular holes or slits; and an intermediate layer holding the cover layer spaced from the support layer, the intermediate layer being configured to establish a communicating connection to enhance the sound absorbing effect between the microperforation of the cover layer and openings of the support layer.
- the top layer is retained on the interim ⁇ rule layer to the support layer in particular stable spaced, with a cohesive connection such as an adhesive bond between the outer layer and the intermediate layer and is provided between the intermediate layer and the backing layer.
- the intermediate layer is particularly sound-permeable, so that there is an acoustically effective, communicating connection between the micro-perforation of the cover layer and the openings of the carrier layer and the sound-absorbing effect of the microperforation of the cover layer and the openings of the carrier layer is created.
- a reduction of the openings of the carrier plate is disadvantageous for the sound absorption, since that part of the incident sound, which does not hit an opening, is reflected again.
- the holes of the cover layer which do not open into an opening of the support plate, do not contribute to the sound absorption, since the sound passing through the holes is reflected by the support plate again.
- a sound-absorbing element comprises a support plate with a sound-facing surface and a sound surface facing away from the sound, and a stabilization layer with micro-perforation-forming holes arranged on the sound-facing surface of the support plate.
- the carrier plate has sound-facing openings on the sound-facing surface and sound-remote openings on the sound-facing surface, wherein the sound-facing and sound facing away from openings communicating via channels and the majority of the surfaces of the sound-facing openings is greater than the surfaces of the sound-emitting openings.
- a portion of the holes forming the micro-perforation are communicatively connected to a plurality of the sound-facing openings for the acoustically active effect, in particular for the formation of Helmholtz resonators and microabsorbers.
- the sound-absorbing element is usually applied to the lining of the inside of a room to the walls, so that the sound-emitting surface of the support plate to the wall and the sound-facing surface of the support plate are oriented towards the room.
- the sound-absorbing element but can also be hanging on the ceiling of a room or free-standing, z. B. as a partition mounted.
- the on the sound-facing surface of the Support plate arranged stabilization layer which is visible from a person who is in the room, serves both for stabilization and for optical coverage of the support plate.
- the micro-perforation advantageously ensures both the transmission of the incident sound and a good visual appearance, since the holes of the micro-perforation are visible to the naked eye only at a short distance, e.g. B. under 50-60 cm, are visible.
- the IViikroperforation has the advantage that a visually disturbing Moire effect can be avoided.
- the sound-facing and sound-emitting openings and the channels of the carrier plate are generated in one step from the sound-facing surface of the carrier plate ago.
- the sound-facing and / or sound-emitting surface of the support plate is planar formed such that the channels each communicating with each other independent sound-facing openings, each communicating with each other independent sound-emitting openings. This has an advantageous effect on the mechanical stability of the carrier plate.
- the channels which connect the sound-facing and the sound-facing openings communicating, usually have in the cross-section perpendicular to the support plate a varying profile and open at the sound-facing and the sound-facing surface in the respective sound away and sound facing openings.
- the openings may be larger than at openings of conventional support plates, in which the channels perpendicular to the support plate in cross section have a constant profile without the mechanical stability of the support plate is reduced, since the loss of mechanical stability due to the smaller area of the openings is compensated on the sound-emitting surface of the carrier plate.
- the openings on the sound-emitting surface of the support surface may be smaller than in conventional openings, without affecting the sound absorption of the sound-absorbing element, since the smaller sound-emitting openings is compensated by the larger area of the openings on the sound-facing surface.
- the configuration of the channels and the sound-facing and sound-facing openings sufficient mechanical stability can be ensured such that can be dispensed with an additional stabilizing edge without openings and thus the openings uniformly over the entire carrier plate can be arranged distributed.
- This is advantageous in that a cutting of the carrier plate in the application of sound ⁇ absorbent member usually does not lead to a reduction in the mechanical stability or a reduction of the absorption characteristics due to blanks, which would cut off an edge or cut around a periphery thereof ,
- the configuration of the channels and the sound-facing and sound-facing openings further offers the advantage that a stabilization layer on the sound ⁇ facing surface of the support plate is sufficient to provide sufficient mechanical stability, in particular torsional stiffness of the sound-absorbing element.
- a stabilization layer on the sound ⁇ facing surface of the support plate is sufficient to provide sufficient mechanical stability, in particular torsional stiffness of the sound-absorbing element.
- two stabilization layers are required to ensure a comparable mechanical stability.
- the reduction to a stabilization layer is advantageous for the reduction of manufacturing costs. Since the micro-perforation forming holes of the stabilization layer usually by suitable piercing methods, such as. B. punching or z. B. with a suitable laser, the reduction to a stabilization layer can also further reduce the cost, which is another advantage.
- the number of holes of the microperforation of the stabilization layer, which communicates with openings on the sound-absorbing th surface are connected and acoustically active can be increased without greatly affecting the mechanical stability of the support plate, which optimally affects the sound absorption.
- This is in comparison to conventional sound-absorbing elements, in which an increase in the number of communicating with openings of the carrier plate holes of the micro perforation with constant microperforation usually accompanied by an increase in the openings and thus a reduction in mechanical stability, advantageous.
- the channels preferably form Helmholtz resonators and microabsorbers with optimum sound absorption properties by means of the wall of the space or a cover on the sound-facing surface of the carrier plate and the holes of the micro-perforation of the stabilization layer.
- the mutual compensatory effect of the optimal sound absorption by the larger surface of the sound-facing openings and the sufficient mechanical stability by the smaller surface of the soundproof openings allows the production of sound-absorbing elements, which have a smaller thickness compared to conventional sound-absorbing elements with comparable sound absorption and mechanical stability , which has a favorable effect on the manufacturing costs.
- the channels may be formed perpendicular to the support plate axially symmetrical, preferably frusto-conical.
- axisymmetric means rotational symmetry with respect to an axis, wherein the rotational symmetry may also include discrete rotations.
- the channels have circular cross-sections with a diameter tapering along the channels.
- the diameter of the channels decreases from the sound-facing surface of the carrier plate toward the sound-deflecting surface of the carrier plate, which increases the mechanical stability without reducing the sound-facing open area.
- the diameter of the channels can be tapered continuously and / or gradually.
- the sound-facing openings preferably have diameters between 4 mm and 9 mm, more preferably between 5 mm and 8 mm, particularly preferably 6 mm. In embodiments with circular cross-sections of the channels, the sound-facing openings preferably have diameters between 6 mm and 10 mm, more preferably between 7 mm and 9 mm, particularly preferably 8 mm.
- the channels have depressions, preferably cone depressions, more preferably spot depressions.
- the channels are formed as stepped holes.
- the reductions offer the advantage that the surface of the sound-facing openings can be increased without greatly impairing the mechanical stability of the support plate.
- the sound absorption properties of the sound-absorbing element can be optimized in a flexible manner.
- the depressions have a depth of at least 2 mm. In further embodiments, the depressions have a depth between 2 mm and 6 mm.
- the depressions preferably have a depth of at least 1 2.5% of the thickness of the carrier plate, more preferably of at least 1 6.5% of the thickness of the carrier plate.
- the channels can be formed symmetrically symmetrical, preferably pyramidal truncated.
- the sound-facing and sound-facing openings are slit-shaped and the channels perpendicular to the support plate symmetrical plane, preferably formed part circle segment.
- This form of channels has the advantage that it can be made in a simple and cost-effective manner by a milling machine, as will be explained below.
- the radius of the pitch circle segment is chosen so that the Helmholtz resonator formed by the channel and the holes of the M icroperforation and Microabsorber can provide sufficient sound absorption.
- the pitch circle segment is understood as meaning the sectional area between a circle segment and a rectangle lying on the base line of the circle segment.
- the part-circle-segment-shaped channels are understood as three-dimensional bodies, which have a thickness of the slot-shaped openings and a projection of a partial circle segment.
- a number of channels of circular cross-section and a number of channels are plane-symmetrical, preferably circular-segment-shaped. Accordingly, a number of sound-facing openings may be circular and a number of sound-facing openings may be slit-shaped.
- the channels are arranged offset from one another.
- the staggered arrangement of the channels in the carrier plate has the advantage that localized weak points in the carrier plate can be avoided and the general mechanical stability of the carrier plate can be increased. Since the incident sound can usually be assumed to be uniform over a sound absorbing element, the offset arrangement of the channels does not adversely affect the sound absorption characteristics of the element.
- a non-woven layer and / or a M ineralfaserwolle für arranged on the sound-emitting surface of the support plate has the advantage that the carrier plate and the stabilization ons harsh, which in particular by the formation of the Helmholtz resonators and M ikroabsorbern preferably represent reactive absorber, can be combined with passive absorbers such as a nonwoven layer and / or a M ineralfaserwolle für and so the sound absorption properties can be further optimized.
- the sound remote openings have a length of between 40 mm and 70 mm, more preferably 60 mm or before ⁇ preferably 50 mm, and have a width between 2 mm and 4.5 mm, white ⁇ ter preferably between 2.5 mm and 4.5 mm, more preferably 3 mm or preferably 4 mm.
- the M take ikroperforation forming holes between 2. 1% and 6.6%, more preferably 2.5%, more preferably 6%, more before Trains t ⁇ 3% or 4.5% of the area of the stabilization layer a.
- the sound-eliminating openings occupy between 1 0% and 20%, more preferably between 1 0% and 1 5%, more preferably 1 2%, or even more preferably 1 4% of the area of the carrier plate.
- the sound-facing openings occupy between 20% and 30%, more preferably 25%, or even more preferably 28.5% of the area of the backing plate.
- the sound-emitting openings take the sound-emitting openings between 20% and 50%, preferably between 23% and 47%, more preferably between 26% and 32% of the area of the carrier plate.
- the sound-facing openings occupy between 30% and 60%, preferably between 40% and 55%, more preferably between 46% and 53%, of the surface of the carrier plate.
- the lengths and / or widths and / or diameters of the sound-facing and / or the sound-facing openings can be varied.
- the distances between the sound-facing and / or the sound-facing openings along axes of the support plate can be varied.
- the variation of the lengths and / or widths and / or diameters of the sound-deflecting and / or the sound-facing openings and / or the distances between the sound-deflecting openings and / or the sound-facing openings makes it possible to produce various open areas of the sound-absorbing element.
- a carrier plate may be equipped with sound-deflecting and sound-facing openings as follows: The width of the sound-remote openings is 4 mm, the length 60 mm.
- the sound-emitting openings are each spaced with 1 20 mm from each other.
- the proportion of the surface of the sound-emitting openings on the surface of the support plate is 1 2.5%.
- the proportion of the surface of the sound-facing openings on the surface of the support plate is 25%.
- the ratio of the areas of the surfaces of the sound-facing away from the sound-facing surfaces is 1: 2.
- a carrier plate can be equipped with sound-deflecting and sound-facing openings as follows:
- the width of the soundproof openings is 3.50 mm, the length 60 mm.
- the distance of the sound-facing openings along a transverse axis of the support plate is in each case 1 0 mm.
- the sound-emitting openings are each spaced with 1 20 mm from each other.
- the proportion of the surface of the sound-emitting openings on the surface of the support plate is 1 2.96%.
- the proportion of the surface of the sound-facing openings on the surface of the support plate is 25.93%.
- the ratio of the areas of the surfaces of the sound-facing away from the sound-facing surfaces is 1: 2.
- a carrier plate can be equipped with sound-deflecting and sound-facing openings as follows:
- the width of the sound-remote openings is 3 mm, the length 70 mm.
- the distance of the sound-facing openings along a transverse axis of the support plate is in each case 1 0 mm.
- the sound-emitting openings are each spaced at 1 00 mm apart.
- the proportion of the surface of the sound- deposited openings on the surface of the support plate is 1 6. 1 5%.
- the proportion of the surface of the sound-facing openings on the surface of the support plate is 23.08%.
- the ratio of the areas of the surfaces of the sound-turned away to the sound-facing surfaces is 1: 1 .43.
- a support plate having channels of circular cross-sections may be provided with remote sound and sound-facing Publ ⁇ voltages as follows:
- the diameter of the openings facing away from sound is 6 mm.
- the distance of the sound-emitting openings along a transverse axis of the support plate is 7 mm, wherein each along the transverse axis successive sound-emitting openings along a longitudinal axis of the support plate are offset by 7 mm.
- Mutually unopposed along the transverse axis successive sound-emitting openings thus have a distance of 1 4 mm.
- the diameter of the sound-facing openings is 8 mm.
- the proportion of the surface of the sound-emitting openings on the surface of the support plate is 28.84%.
- the proportion of sound-facing openings on the surface of the support plate is 5 1 .26%.
- the ratio of the areas of the surfaces of the sound-facing to the sound-facing surfaces is 1: 1 .77.
- the number of holes 1 0'204.
- the ratio of the sum of the surfaces of the sound-facing openings and the sum of the surfaces of the sound-emitting openings of the Support plate x 1, where x preferably between 1. 1 and 2.5, more preferably between 1 .4 and 2.2, more preferably 1 .77 or more preferably 2.
- At least one edge of the sound-absorbing element has a first connection element and at least one further edge of the element has a second connection element, so that the element can be connected to a further element via the first and the second connection element.
- the first connection element may be a comb and the second connection element may be a groove, so that the element can be connected to a further element by a comb-groove connection.
- the connection elements may be designed as click-lock elements, so that the sound-absorbing elements can be connected to one another by a click-lock mechanism. This has the advantage that the sound-absorbing element can be a modular element which can be used as required, e.g. can be put together to make a wall cladding without having to cut the elements to size.
- connection elements are formed so that the joints between the sound-absorbing elements at a sufficient distance, z. B. greater than 2 m, unrecognizable to the eye. This has the advantage that from a sufficient distance a panel with the sound-absorbing elements can appear visually seamless.
- the stabilization layer comprises a plywood.
- the stabilization layer comprises a synthetic resin.
- the stabilization layer comprises a lacquer.
- the stabilization layer comprises a laminate.
- the laminate may be a continuous pressure laminate (CPL).
- CPL continuous pressure laminate
- the micro-perforation forming holes have a diameter between 250 ⁇ and 550 ⁇ , more preferably 300 ⁇ or preferably 500 ⁇ on.
- This dimensioning has the advantage that the holes forming the micro-perforation are both acoustically active and also sufficiently small that they are spaced at a sufficient distance, eg. B. greater than 50-60 cm, unrecognizable to the eye and thus can form a visually pleasing surface.
- the carrier plate consists of pressboard.
- the carrier plate is made of gypsum fiber. These materials have the advantage of being easy to process and inexpensive.
- the carrier plate is made of wood fibers.
- the carrier plate may be configured as a medium density fiberboard (M DF) or as a high density fiberboard (HDF).
- the invention relates to a method for producing a sound-absorbing element according to the present disclosure, characterized in that the sound-facing and sound-facing openings and the channels are each generated in one step from the sound-facing surface of the carrier plate ago.
- the sound-facing and sound-facing openings and the channels are milled by a milling machine in the support plate, wherein the inner Fräsform the channels at least partially corresponds to the Fräsblatt and the openings and channels by a consecutive up / down and / or longitudinal movement milled the milling blade and / or the sound-absorbing element.
- milling blades are arranged on one shaft or a plurality of spaced-apart shafts of a milling machine.
- the carrier plate to be processed is guided in the feed direction, on the shaft or the shafts which are perpendicular to the feed direction. hen and are aligned parallel to the surface of the carrier plate.
- the support plate is brought by means of a feed device, not shown in the area of the shaft / n or Fräsbi decisivter. These are in a parked position. These can then be delivered, whereby the openings of the carrier plate are milled. Thereafter, these are brought back into the parked position and the carrier plate is advanced by one step. By repeating this process, the entire support plate can be provided with openings.
- the milling blades can be arranged in a method with a milling machine with a shaft at twice the distance of the slot-shaped openings of the support plate. The openings can then be milled offset with the Frästryn this one shaft.
- the acoustically and sonically facing openings and channels are preferably drilled.
- the reductions are generated in the same step as the channels.
- FIG. 1 shows a perspective view of an embodiment of a sound-absorbing element from the sound-facing side
- FIG. 2 shows a perspective view of the sound-absorbing element from FIG. 1 from the sound-remote side;
- FIG. 1 shows a perspective view of an embodiment of a sound-absorbing element from the sound-facing side
- FIG. 2 shows a perspective view of the sound-absorbing element from FIG. 1 from the sound-remote side
- Fig. 3 is a sectional view of the sound-absorbing element along the
- Fig. 4 is a sectional view of the sound-absorbing element along the
- FIG. 5 shows a perspective view of a further embodiment of a sound-absorbing element from the sound-facing side
- FIG. 6 is an illustration of an arrangement of sound-facing and sound-facing openings of another embodiment of the carrier plate from the sound-facing side;
- FIG. 7 shows a perspective view of a further embodiment of a sound-absorbing element from the sound-facing side.
- Figure 1 shows a perspective view of an embodiment of a sound-absorbing element 1 from the sound-facing side with a view of the Sound-facing surface of the support plate 1 2.
- the sound-absorbing element comprises a stabilization layer 1 1 and a support plate 1 2.
- a part of the stabilization layer 1 1 schematically shown cut out.
- the stabilization layer 1 1 is on the sound-facing surface of the support plate 1 2, z. B. by gluing, attached.
- the rear sound-facing surface is not visible in the figure.
- the support plate 1 2 has sound-facing openings 1 2 1 on the sound-facing surface and sound-emitting openings 1 22 on the sound-emitting surface, which are communicatively connected by channels 1 23.
- the surface of the sound-facing openings 1 2 1 is larger than the surface of the sound-emitting openings 1 22, so that in the perspective view shown from the sound side facing the side walls 1 23 1 of the channels 1 23 are visible.
- the stabilization layer 1 1 has a microperforation-forming holes 1 1 1 on. A portion of the holes 1 1 1 communicates with the sound-facing openings 1 2 1 communicating.
- the sound-absorbing element 1 shown is designed to be open on the surface facing away from the sound, ie no additional layer is applied to the surface of the support plate 1 2 facing away from the sound. When cladding a wall with the sound-absorbing element 1 shown, the wall closes the sound-emitting opening
- the sound-facing opening 1 2 1 and the holes 1 1 1 1 Helmholtz resonators and microabsorber are formed.
- the sound-facing openings 1 2 1 are arranged offset from each other, which is favorable to the me- chanical stability of the support plate 1 2 affects.
- the stabilization layer 1 1 consists eg of plywood.
- the support plate 1 2 is for example a gypsum fiber board.
- the sound-facing and sound-emitting openings 1 2 1, 1 22 and the channels 1 23 are milled using a milling machine in the support plate 1 2.
- FIG. 2 shows a perspective view of the sound-absorbing element 1 from FIG. 1 from the side facing away from the sound, with a view of the sound-deflecting surface of the carrier plate 1 2.
- the sound-deflecting openings 12 are clearly visible.
- the sound-facing openings 1 2 1 are covered by the stabilization layer 1 1, wherein the micro-perforation forming holes are not shown in this figure.
- a longitudinal edge of the sound-absorbing element 1 is shown cut so that the part-circle segment-shaped channels 1 23 are visible.
- the sound-facing openings 1 2 1 are communicatively connected to the sound-emitting openings 1 22 through the channels 1 23, which is achieved by the pitch circle segment shape of the channels 1 23, that the surface of the sound-facing openings 1 21 is greater than the surface of the sound-emitting openings 1 22 ,
- FIG. 3 shows a sectional view of the sound-absorbing element 1 along the section line AA in FIG. 1.
- the sides of the channels 1 23 extend perpendicular to the support plate 1 2 and communicate communicating the sound-facing openings 1 2 1 with the sound-emitting openings 1 22.
- the stabilization layer 1 1 is not shown in the figure for the sake of simplicity. Due to the part-circle segment-shaped channels 1 23, which arranged offset are, in this sectional view, each second channel 1 23 through the support plate 1 2 shown continuously.
- FIG. 4 shows a sectional illustration of the sound-absorbing element 1 along the section line B-B in FIG. 1.
- the channels 1 23 are formed part-circle segment-shaped.
- the pitch circle segments correspond to the shapes of the milling blades of the milling machine, which dive into the support plate 1 2 during milling such that the channels shown 1 23 with the sound-facing and sound-facing openings 1 2 1, 1 22 are milled out of the support plate 1 2.
- the configuration of the channels 1 23 which connect the sound-facing and sound-deflecting openings 1 21, 1 22 makes possible the configuration in which the surface of the sound-facing openings 1 2 1 is larger than the area of the sound-facing openings 1 is 22.
- FIG. 5 shows a perspective view of a further embodiment of a sound-absorbing element 1 'from the sound-facing side.
- the sound-absorbing element 1 ' comprises a stabilization layer 1 1' and a support plate 1 2 '.
- a part of the stabilization layer 1 1 ' is shown schematically cut out in the figure.
- the stabilization layer 1 1 ' is on the sound-facing surface of the support plate 1 2', z. B. by gluing, attached.
- the support plate 1 2 ' has sound-facing openings 1 2 1' on the sound-facing surface and sound-emitting openings 1 22 'on the sound-emitting surface, which passes through channels 123 'communicatively connected.
- the channels 123 ' are formed as holes with circular cross-sections and along the channels 123' tapered diameter.
- the tapered diameters along the channels 123 ' are achieved by depressions 124' which emanate from the sound-facing openings 121 'and open into cylindrical portions of the channels 123'.
- the support plate 12 ' is shown cut at a corner so that two channels 123' are shown cut in the direction along the channels 123 '.
- the countersinks 124 ' are designed as conical countersinks.
- the support plate 12' is partially cut out at the height of the depressions 124 '.
- the depressions 124 ' result in that the surfaces of the sound-facing openings 121' are each larger than the surfaces of the sound-eliminating openings 122 '.
- the stabilization layer 11' has a micro-perforation-forming holes 111 '. A portion of the holes 111 'is communicatively connected to the sound-facing openings 121'.
- the sound-absorbing element 1 'shown is shown open on the surface facing away from the sound, that is, no additional layer is applied to the surface of the support plate 12' facing away from the sound.
- the wall closes the sound-deflecting openings 122', so that through the wall, the sound-deflecting opening 122 ', the channel 123', the sound-facing opening 121 'and the holes 111' Helmholtz Resonators and microabsorbers are formed.
- the sound-facing openings 121 ', the channels 123' and the sound-emitting openings are arranged over the support plate 12' in a regular non-offset pattern, ie successive sound-facing openings 121 'or openings 122' remote from the sound lie on the same transverse axis or longitudinal axis of the support plate 12 '.
- FIG. 6 shows a representation of an arrangement of sound-facing openings 121 "and sound-deflecting openings 122" and channels 123 "of a further embodiment of the support panel from the sound-facing side
- the sound-facing openings 121" and the sound-remote openings 122 are communicatively connected by channels 123" , From the sound-facing openings 121 ", there are depressions 124", which respectively open into cylindrical sections of the channels 123 ".
- the sound-facing openings 121" are circular in shape with a diameter d.
- the sound-deflecting openings 122 "and the channels 123" are formed with a diameter d 'circular.
- the surfaces of the sound-facing openings 121" are each larger than the surfaces of the sound-deflecting openings 122 "The sound-facing openings 121" and with them the channels 123 "as well as the sound-remote Openings 122 "are arranged offset to one another in a grid.
- the transverse direction x of the support plate are each a series of sound-facing openings 121 "at intervals a to each other, in each case between two sound-facing openings 121", which are arranged in the x-direction at a distance a to each other, another sound-facing opening 121 "by a '/ 2 is offset in the longitudinal direction y of the carrier plate.
- a a '.
- the sound-absorbing element 1''' comprises a stabilization layer 11 '' and a carrier plate 1 2 '''.
- a part of the stabilization layer 1 1 "' is shown schematically cut out in the figure
- the stabilization layer 1 1"' is on the sound-facing surface of the
- the carrier plate 1 2 “'has sound-facing openings 1 2 1"' on the surface facing the sound and sound-removed openings 1 22 "'on the surface facing away from the sound, which pass through channels 1 23"'.
- the channels 1 23 "' are formed as stepped holes 1 24"' with circular Ouerten and along the channels 1 23 "'tapered diameter.
- the tapered diameters along the channels 1 23 "' are achieved by the stepped holes 1 24"', which divide the channels respectively into two cylindrical sections of different diameters, the cylindrical section which opens into the sound-facing openings 1 2 1 "' , Has a larger diameter than the cylindrical portion which opens into the sound-emitting openings 1 22 ".
- the support plate 1 2 "' is shown cut at one corner, so that two channels 1 23"' are shown cut in the direction along the channels 1 23 "'
- the support plate 12"' partially cut out cut shown.
- the stepped bores 124 "'cause the surfaces of the sound-facing openings 121"' to be larger than the areas of the sound-eliminating openings 122 "'.
- the stabilization layer 11"' has microperforation-forming holes 111 "'"'is communicatively connected to the sound-facing openings 121''.
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Electromagnetism (AREA)
- Building Environments (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH00406/18A CH713133B1 (de) | 2015-09-29 | 2016-09-19 | Schallabsorbierendes Element. |
DE112016004408.9T DE112016004408A5 (de) | 2015-09-29 | 2016-09-19 | Schallabsorbierendes element |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1440/15 | 2015-09-29 | ||
CH01440/15A CH711582A1 (de) | 2015-09-29 | 2015-09-29 | Schallabsorbierendes Element. |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017055124A1 true WO2017055124A1 (de) | 2017-04-06 |
Family
ID=56958924
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2016/072165 WO2017055124A1 (de) | 2015-09-29 | 2016-09-19 | Schallabsorbierendes element |
Country Status (3)
Country | Link |
---|---|
CH (2) | CH711582A1 (de) |
DE (1) | DE112016004408A5 (de) |
WO (1) | WO2017055124A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110005086A (zh) * | 2019-03-29 | 2019-07-12 | 广州市五羊艺冠声学材料有限公司 | 一种超微孔吸音板 |
CN113488013A (zh) * | 2021-07-30 | 2021-10-08 | 中国人民解放军海军工程大学 | 宽频带折叠背腔微穿孔吸声结构 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1972563A (en) * | 1933-01-31 | 1934-09-04 | Irvin Richard | Acoustic construction |
GB896941A (en) * | 1957-11-12 | 1962-05-23 | Tentest Company Ltd | Improvements in building boards or panels |
US3177970A (en) * | 1961-01-21 | 1965-04-13 | Gomma Antivibranti Applic | Sound-absorbing panels with tapered holes therethrough |
DE202005021353U1 (de) * | 2004-12-22 | 2007-09-27 | Knauf Gips Kg | Lochplatte auf Basis von Gips |
WO2013159240A1 (de) * | 2012-04-26 | 2013-10-31 | Akustik & Raum Ag | Schallabsorbierendes element |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2952382T3 (es) * | 2011-10-01 | 2023-10-31 | Dukta Gmbh | Elemento de absorción acústica |
CN202390946U (zh) * | 2011-11-25 | 2012-08-22 | 广州丽音建筑材料有限公司 | 带有亥姆霍兹式共振腔的吸声板 |
DE102012105321A1 (de) * | 2012-06-19 | 2013-12-19 | Knauf Gips Kg | Schallabsorbierende Platte zur Raumgestaltung sowie zugehöriges Herstellungsverfahren |
-
2015
- 2015-09-29 CH CH01440/15A patent/CH711582A1/de not_active Application Discontinuation
-
2016
- 2016-09-19 DE DE112016004408.9T patent/DE112016004408A5/de active Pending
- 2016-09-19 CH CH00406/18A patent/CH713133B1/de unknown
- 2016-09-19 WO PCT/EP2016/072165 patent/WO2017055124A1/de active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1972563A (en) * | 1933-01-31 | 1934-09-04 | Irvin Richard | Acoustic construction |
GB896941A (en) * | 1957-11-12 | 1962-05-23 | Tentest Company Ltd | Improvements in building boards or panels |
US3177970A (en) * | 1961-01-21 | 1965-04-13 | Gomma Antivibranti Applic | Sound-absorbing panels with tapered holes therethrough |
DE202005021353U1 (de) * | 2004-12-22 | 2007-09-27 | Knauf Gips Kg | Lochplatte auf Basis von Gips |
WO2013159240A1 (de) * | 2012-04-26 | 2013-10-31 | Akustik & Raum Ag | Schallabsorbierendes element |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110005086A (zh) * | 2019-03-29 | 2019-07-12 | 广州市五羊艺冠声学材料有限公司 | 一种超微孔吸音板 |
CN113488013A (zh) * | 2021-07-30 | 2021-10-08 | 中国人民解放军海军工程大学 | 宽频带折叠背腔微穿孔吸声结构 |
Also Published As
Publication number | Publication date |
---|---|
CH713133B1 (de) | 2020-05-29 |
CH711582A1 (de) | 2017-03-31 |
DE112016004408A5 (de) | 2018-07-26 |
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