EP3103114B1 - Absorbeur de bruit - Google Patents

Absorbeur de bruit Download PDF

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Publication number
EP3103114B1
EP3103114B1 EP15711641.9A EP15711641A EP3103114B1 EP 3103114 B1 EP3103114 B1 EP 3103114B1 EP 15711641 A EP15711641 A EP 15711641A EP 3103114 B1 EP3103114 B1 EP 3103114B1
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EP
European Patent Office
Prior art keywords
sound absorber
sound
absorber element
structural elements
absorber according
Prior art date
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Active
Application number
EP15711641.9A
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German (de)
English (en)
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EP3103114A1 (fr
Inventor
Vasile Lic. Dorolti
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Individual
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Individual
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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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general

Definitions

  • the invention relates to a sound absorber for free hanging in a room with a sound absorber element that forms a cavity, and with a frame holding the sound absorber element, which has at least one fastening point for the suspension of the sound absorber and at least two opposing contact surfaces, on each of which a face end of the The sound absorber element.
  • the invention is therefore based on the object of improving the sound reduction of a sound absorber in accordance with claim 1, proceeding from the prior art described at the outset.
  • this sound absorber should be easy to manufacture and cost-effective.
  • the invention achieves the stated problem in that the bottom-side cavity opening of the cavity of the sound absorber element is open to the outside of the sound absorber, the frame-shaped frame for this purpose running along the length of the sound absorber element and ending in a support surface for the bottom end of the sound absorber element.
  • the bottom cavity opening of the cavity of the sound absorber element is open to the outside of the sound absorber, the contact area between the sound absorbing material and the sound transporting gas can be increased considerably, especially if the frame-shaped frame for this purpose runs along the length of the sound absorber element and ends in a support surface for the bottom end of the sound absorber element .
  • the bottom-side cavity opening is open, preferably completely open, or left free or exposed, so that sound can penetrate unhindered or therefore without reflection into the cavity of the sound absorber element to dampen it.
  • the outer surface of the cavity is formed exclusively by parallel straight lines, for example solved in a structurally simple manner in that the sound absorber element is formed, for example, in the form of a mat.
  • the sound-transporting gas is thus in direct contact with the inside of the sound absorber element and thus both with the outer surface and with the inner surface of the sound absorber element, which can be used for a high level of sound absorption.
  • a frame-shaped frame only leads to a slight coverage of the inner and / or outer surface of the sound absorber element, which can increase the contact area between the sound absorber element and the sound-transporting gas and thus also the sound attenuation.
  • a stable sound absorber with significantly greater sound absorption capacity can be created in this way.
  • the sound absorber element is designed as a hollow cylinder, an efficient sound absorber can be created in a structurally simple and inexpensive manner.
  • a particular feature of hollow-cylindrical sound absorbers is that only sound absorber mats of a single type can suffice to form a cylindrical sound absorber element.
  • the sound absorber element has a cycloid, in particular hypocycloid, cross section
  • the sound absorption can be increased further by enlarging the inner surface of the sound absorber element.
  • hypocycloid-shaped cross-sections can be produced in a structurally simple manner, since the same mats as those used for hollow-cylindrical sound absorbers can be used.
  • deltoid-shaped cross-sections three-fold hypocycloids
  • astroid-shaped cross-sections four-fold hypocycloids
  • the desired shape of the sound absorber element with corresponding bending radii can be built up from simple flat mats.
  • a circular-cylindrical sound absorber element can be formed in the case of mats adjoining one another at the end. It is also conceivable to form a sound absorber element with a cycloid cross-section with the ends of the mats joined together.
  • the design of the support surfaces can ensure a flat joint between two mats that adjoin one another.
  • the surface of the sound absorber element covered by the frame can be kept small and the sound-absorbing effect can be increased.
  • the straight components are preferably made of metal, in particular stainless steel, aluminum or other metal alloys, but can also be made of plastic.
  • the straight structural elements enclose the respective mats at least in some areas in the joint, the stability and cohesion of the sound absorber element consisting of individual mats can be improved. This can be particularly noticeable in the case of sound absorber elements with a cycloid cross-section, since these can be held together in the joint via the straight structural elements. A robust and stable sound absorber can result in this way.
  • the straight components are rods, rails and / or profiles, the stability and rigidity of the frame can be further improved and made more efficient.
  • a sound absorber that is structurally easy to manufacture and yet stable can result if the straight components run on the outside of the sound absorber element.
  • the straight structural elements have openings for the formation of an acoustically open structure, reflections of the sound on the straight structural elements can be significantly reduced and the sound-absorbing effect of the sound absorber can be further improved.
  • Acoustically open structures can in this case be formed in particular by perforations, holes, slots or large-area recesses.
  • the sound absorber can be hung in a user-friendly manner by means of ropes, chains or the like guided through the eyelets.
  • the sound absorber can be suspended from a room ceiling.
  • a suspension of the sound absorber at a distance of at least 30 cm from the ceiling can prove to be particularly advantageous.
  • other suspension options such as flexible, mobile constructions with which the sound absorber or a plurality of sound absorbers are positioned in the vicinity of a noise source, are also conceivable.
  • Such mobile constructions can, under certain circumstances, be characterized by flexible acoustic shielding of special noise sources.
  • the frame has two U-profiles which form support surfaces and which each enclose one of the two end face ends of the sound absorber element, then this can be held securely by the two profiles. If simple mats are used to form the sound absorber element, the circular cylinder shape of the sound absorber element can be impressed by the U-profiles and can also be connected to the frame in a structurally simple manner.
  • the U-profiles and the straight components can be connected with all common fastening means, such as riveting, welding or gluing.
  • the sound absorption can be increased again if the sound absorbing element is closed on the ceiling side with sound absorbing material.
  • the sound absorber element has at least one cavity insert made of sound absorbing material that is detachably connected to the sound absorber, then the sound absorption of the sound absorber can be further increased while maintaining the compact design. In particular, this opens up the possibility of making an adjustment in the sound absorption, preferably for lower frequencies, such an adjustment being extremely manageable due to the cavity that is open to the outside.
  • the sound absorber is encompassed on the outside by a protective cover that can be detached from the sound absorber, it can be prevented that dust or dirt can penetrate into the sound absorber element and thus reduce its sound absorption capacity.
  • a textile fabric or knitted fabric can offer sufficiently good protection against dust.
  • textile covers can be exchanged in a simple manner and thus significantly increase the service life of the sound absorber.
  • a particularly stable sound absorber can be created in this way.
  • textile fabrics based on melamine resin can also prove to be particularly advantageous as a protective textile cover, since this can additionally improve the fire-retardant properties of the sound absorber.
  • Fig. 1 For example, a section through the front view of a sound absorber 1, which is suspended from the ceiling 2 of a room 3, is shown.
  • This sound absorber 1 is constructed from a sound absorber element 4 which forms a cavity 24, the sound absorber element 4 including the cavity 24 and which is held by a frame 5.
  • the frame 5 has two profiles 6, 7 which are curved to form a circle and which are designed as support surfaces 8, 9 for the opposite end faces 10, 11 of the sound absorber element 4.
  • the sound absorber element 4 is held on the frame 5 in the circular cylindrical shape specified by the support surfaces 8, 9.
  • this frame has 5 fastening points 12 for the suspension of the sound absorber 1.
  • the bottom-side cavity opening 13 of the cavity 24 of the sound absorber element 4 is open or exposed to the outside of the sound absorber 1.
  • the cavity 24 is therefore complete from the sound absorber element 4 and is essentially open to the outside without being tapered.
  • the surface 14, 15 of the sound absorber element 4 in contact with the sound-transporting gas is significantly enlarged, since the surface 14 on the inside is now also accessible for sound absorption in a barrier-free manner.
  • the frame-shaped frame 5 running along the length of the sound absorber element 4 only covers the sound-absorbing surface 15 of the sound absorber element to a small extent.
  • a plan view of a hollow cylindrical sound absorber 1 is shown.
  • Sound absorbers 100, 101 are shown, which have a cycolid-shaped cross section.
  • a sound absorber 100 with a threefold hypocycloid-shaped (deltoid-shaped) cross section is shown in FIG Fig. 5 shown.
  • a sound absorber 101 with a four-fold hypocycloid-shaped (astroid-shaped) cross section is shown in FIG Fig. 6 shown.
  • a hollow sound absorber 100 with a hypocycloid-shaped cross-section can form the inner surface 14 of the sound absorber 101 (cf. Fig. 4 ) increase significantly compared to hollow cylindrical sound absorbers 1, which leads to an overall more compact design.
  • a further advantage of the shown edging of the sound absorber element 4 results when one or more mats 21, 121 form the sound absorber element 4. With the aid of the border, these mats 21, 121 can be brought and held in the form of a circular-cylindrical sound absorber element 4, a flat end-face joint 22 being formed between two adjacent mats 21, 121. A simple and inexpensive sound absorber 1 with a larger sound-absorbing surface 14, 15 can thus be formed.
  • the frame 5 consists of four symmetrically arranged components 16 which run straight in the area of the sound absorber element 4. In general, however, it is also conceivable to provide more or fewer such straight components 16 on the frame 5. In this way, on the one hand, the covered surface 15 of the sound absorber element 4 is kept small and, on the other hand, an extremely simple and yet stable construction of the sound absorber 1 is possible.
  • the sound absorber 100 has lateral profiles 26 which enclose the mats 21, 121 and 122 in the respective joint 22.
  • the lateral U-shaped profiles 26 encompass the joint 22 along the longitudinal side of the sound absorber element 4 and thus guarantee the dimensional stability of the sound absorber element 4.
  • the straight components 16, in the exemplary embodiment in Fig. 1 are designed as rods 17. These rods 17 give the frame 5 more stability and rigidity while at the same time being of a lightweight construction.
  • These rods 17 are in particular mounted on the outside of the sound absorber element 4, whereby a simplified assembly can also be ensured.
  • any number (more or less) of straight structural elements 16, in a symmetrical or asymmetrical arrangement, are conceivable in order to form the jacket of the frame-shaped frame 5.
  • This frame jacket can be provided on the inside and / or outside of the sound absorber element 4.
  • the straight components 16 can have an acoustically open structure formed by openings 27.
  • the rods 17 located on the outside of the frame 5 can be perforated or holes, slots or large-area recesses exhibit. This makes it possible to prevent sound hitting the rods 17 from being reflected, but being absorbed by the sound absorber element 4 located behind it.
  • the rods 17 forming the frame 5 end at their upper, inwardly bent end in fastening points 12.
  • fastening points 12 can in particular, as in Fig. 2 shown, be formed by eyelets 18. These offer a simple yet reliable way of freely hanging the sound absorber 1 in the room 3.
  • the suspension can be carried out with the aid of ropes 19, chains, flexible tension elements or the like guided through the eyelets 18.
  • Other configurations of the fastening points 12 on the straight structural elements 16 are conceivable, but not shown.
  • Fig. 1 or the enlarged section in Fig. 3 show that the support surfaces 8, 9 of the frame are designed as U-profiles 6, 7. These U-profiles 6, 7 each enclose one of the two end face ends 10, 11 of the sound absorber element 4. As a result, the shape of the cross section can be imposed on the sound absorber element in a simple manner.
  • the upper 6 and lower U-profiles 7 are connected to one another via the rods 17 of the frame 5, which further increases the stability of the frame 5.
  • the screw connection 20 shown represents a connection between rods 17 and U-profile 6, 7 that is easy to achieve.
  • other connection techniques such as welding, soldering, riveting, gluing and the like are also conceivable.
  • a stable sound absorber 1 is guaranteed by this type of receptacle for the sound absorber element 4.
  • the top side of the hollow cylindrical sound absorber element 4 is closed in this exemplary embodiment. This prevents sound entering through the cavity opening 13 on the bottom side from exiting again on the ceiling side.
  • This ceiling side is closed with a sound-absorbing material 23, whereby the sound absorption is further improved.
  • a cavity insert 25 is provided in the cavity 24, as shown in FIG Fig. 1 can be seen.
  • the cavity insert 25 is made of sound-absorbing material 23 and detachably connected to the sound absorber 1, so that it can be removed from the sound absorber as required in order to adjust the sound absorption. It is conceivable that a plurality of cavity inserts 25 adjoining one another or spaced apart from one another are provided in order to further improve the sound absorption at certain frequencies, which, however, has not been shown in more detail in the figures.
  • the sound absorber 100 is completely encompassed by a textile protective cover 28, which protects the sound absorber element 4 from contamination.
  • the embodiments of sound absorbers 100, 101 according to Figures 4, 5 and 6th differ from the sound absorber 1 according to Fig. 1 essentially in cross-sectional shape.
  • the sound absorbers 100, 101 show hypocycloid-shaped cross-sections of the sound absorber element 4.
  • the mats 21, 121, 122, 123 do not abut one another at the end, but rather form a joint 22 at each end or at the end of their long sides, as shown in FIG the Fig. 5 and 6th can be seen.
  • the sound absorber 100 forms the sound absorber element 4 with three mats 21, 121, 122, whereas the sound absorber 101 simulates Fig. 6 four mats 21, 121, 122 and 123 are disclosed.
  • rods 17 of the straight structural elements 16 connect not only the upper and lower U-profiles 7 but also the side profiles 26, for which screw connections 30 are provided. A particularly mechanically rigid frame 5 is thus created.

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Architecture (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Building Environments (AREA)

Claims (15)

  1. Absorbeur acoustique à suspendre librement dans une pièce (3), avec un élément d'absorbeur acoustique (4) formant une cavité (24) et avec un bâti (5) retenant l'élément d'absorbeur acoustique (4) qui comporte au moins un point de fixation (12) pour suspendre l'absorbeur acoustique (1) et au moins deux surfaces d'appui (8, 9) qui se font face, sur chacune desquelles repose une extrémité de face frontale (10, 11) de l'élément d'absorbeur acoustique (4), caractérisé en ce que l'élément d'absorbeur acoustique (4) est composé d'une ou plusieurs nappes (21, 121, 122, 123) et en que l'ouverture (13) de la cavité (24) de l'élément d'absorbeur acoustique (4) du côté du sol est ouverte vers l'extérieur de l'absorbeur acoustique (1), le bâti (5) en forme de cadre s'étendant pour cela le long de l'élément d'absorbeur acoustique (4) et se finissant par une surface d'appui (9) pour l'extrémité de face frontale (11) du côté du sol de l'élément d'absorbeur acoustique (4).
  2. Absorbeur acoustique selon la revendication 1, caractérisé en ce que l'élément d'absorbeur acoustique (4) est en forme de cylindre creux ou présente une section en forme de cyloïde, en particulier d'hypocycloïde.
  3. Absorbeur acoustique selon la revendication 1 ou 2, caractérisé en ce que l'élément d'absorbeur acoustique (4) est composé de plusieurs nappes (21, 121, 122, 123) se raccordant les unes aux autres aux extrémités, en particulier sur la face frontale.
  4. Absorbeur acoustique selon la revendication 1, 2 ou 3, caractérisé en ce que le bâti (5) s'étend avec des éléments de construction droits (16) le long de l'élément d'absorbeur acoustique (4).
  5. Absorbeur acoustique selon la revendication 3 et 4, caractérisé en ce que les éléments de construction droits (16) renferment au moins par zones les nappes (21, 121, 122, 123) dans l'assemblage bout à bout (22) correspondant.
  6. Absorbeur acoustique selon la revendication 4 ou 5, caractérisé en ce que les éléments de construction droits (16) sont des barres (17), des rails et/ou des profilés (26).
  7. Absorbeur acoustique selon la revendication 4, 5 ou 6, caractérisé en ce que les éléments de construction droits (16) s'étendent sur l'extérieur de l'élément d'absorbeur acoustique (4).
  8. Absorbeur acoustique selon l'une des revendications 4 à 7, caractérisé en ce que les éléments de construction droits (16) présentent des ouvertures (27) pour former une structure ouverte aux sons.
  9. Absorbeur acoustique selon l'une des revendications 4 à 8, caractérisé en ce que les éléments de construction droits (16) se terminent en des points de fixation (12) pour la suspension.
  10. Absorbeur acoustique selon l'une des revendications 4 à 9, caractérisé en ce que les éléments de construction droits (16) présentent des œillets (18) qui forment les points de fixation (12).
  11. Absorbeur acoustique selon l'une des revendications 1 à 10, caractérisé en ce que le bâti (5) présente des profilés en U (6, 7) formant deux surfaces d'appui (8, 9) qui renferment chacune une des deux extrémités de face frontale (10, 11) de l'élément d'absorbeur acoustique (4).
  12. Absorbeur acoustique selon la revendication 4 et 11, caractérisé en ce que les deux profilés en U (6, 7) sont reliés l'un à l'autre par l'intermédiaire de éléments de construction droits (16) en particulier par des vissages (20).
  13. Absorbeur acoustique selon l'une des revendications 1 à 12, caractérisé en ce que l'élément d'absorbeur acoustique (4) creux est fermé du côté du plafond, en particulier avec du matériau absorbant les sons (23).
  14. Absorbeur acoustique selon l'une des revendications 1 à 13, caractérisé en ce que l'élément d'absorbeur acoustique (4) présente au moins un insert de cavité (25) en matériau absorbant les sons (23), relié de façon amovible à l'absorbeur acoustique (1, 100, 101).
  15. Absorbeur acoustique selon l'une des revendications 1 à 14, caractérisé en ce que l'absorbeur acoustique (4) est entouré sur l'extérieur par une enveloppe protectrice (28) qui peut être détachée de l'absorbeur acoustique (4).
EP15711641.9A 2014-02-04 2015-02-04 Absorbeur de bruit Active EP3103114B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50084/2014A AT515382B1 (de) 2014-02-04 2014-02-04 Schallabsorber
PCT/AT2015/050040 WO2015117176A1 (fr) 2014-02-04 2015-02-04 Absorbeur de bruit

Publications (2)

Publication Number Publication Date
EP3103114A1 EP3103114A1 (fr) 2016-12-14
EP3103114B1 true EP3103114B1 (fr) 2021-06-02

Family

ID=52726907

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15711641.9A Active EP3103114B1 (fr) 2014-02-04 2015-02-04 Absorbeur de bruit

Country Status (4)

Country Link
EP (1) EP3103114B1 (fr)
AT (1) AT515382B1 (fr)
ES (1) ES2886153T3 (fr)
WO (1) WO2015117176A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2706530A (en) * 1953-04-29 1955-04-19 Robert R Abrams Functional sound absorber and method of absorbing sound
FR1111836A (fr) * 1954-09-30 1956-03-05 Corps absorbant du son
US3819010A (en) * 1972-11-01 1974-06-25 Armstrong Cork Co Sound-absorbing wedge
US4319661A (en) * 1978-09-20 1982-03-16 The Proudfoot Company, Inc. Acoustic space absorber unit
DE3264790D1 (en) * 1981-11-19 1985-08-22 Gruenzweig & Hartmann Montage A body, used especially for sound absorption, e.g. in rooms, in the form of a cylindrical tube made of mineral fibres
US5444198A (en) * 1994-01-04 1995-08-22 Gallas; John M. Trap for controlling standing waves in rooms
DE20218251U1 (de) * 2002-11-25 2003-01-30 G & H Schallschutz Gmbh Vorrichtung zur Schallabsorption

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
ES2886153T9 (es) 2022-01-27
ES2886153T3 (es) 2021-12-16
EP3103114A1 (fr) 2016-12-14
WO2015117176A1 (fr) 2015-08-13
AT515382A1 (de) 2015-08-15
AT515382B1 (de) 2015-12-15

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