EP3103114A1 - Absorbeur de bruit - Google Patents

Absorbeur de bruit

Info

Publication number
EP3103114A1
EP3103114A1 EP15711641.9A EP15711641A EP3103114A1 EP 3103114 A1 EP3103114 A1 EP 3103114A1 EP 15711641 A EP15711641 A EP 15711641A EP 3103114 A1 EP3103114 A1 EP 3103114A1
Authority
EP
European Patent Office
Prior art keywords
sound absorber
sound
absorber element
absorber according
frame
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.)
Granted
Application number
EP15711641.9A
Other languages
German (de)
English (en)
Other versions
EP3103114B1 (fr
Inventor
Vasile Lic. Dorolti
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP3103114A1 publication Critical patent/EP3103114A1/fr
Application granted granted Critical
Publication of EP3103114B1 publication Critical patent/EP3103114B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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 forming a cavity, and with a sound absorber element holding frame having at least one attachment point for the suspension of the sound absorber and at least two opposite bearing surfaces, on each of which a front end of the Sound absorber element abut.
  • Cylindrical sound absorbers are known from EP142651 1 A1. At the upper and lower ends of a hollow cylindrical Schallabsorberelements a cover is mounted, which together form a frame by means of a central rod to mechanically stabilize the sound absorbing element and to provide a suspension. Disadvantageously, such sound absorbers do not achieve the required sound reduction.
  • the invention is therefore based on the object, starting from the above-described prior art, to improve a sound absorber in its sound reduction.
  • this sound absorber should be easy to manufacture in production and be inexpensive.
  • the invention solves this problem by the bottom-side cavity opening of the cavity of the sound absorber element is open to the outside of the sound absorber, for which purpose the frame-shaped frame extends along the longitudinal side of the sound absorber element and ends in a support surface for the bottom end side end of the sound absorber element.
  • the contact surface between sound-absorbing material and sound-transporting gas can be considerably increased, in particular if the frame-shaped frame extends along the sound absorber element along the longitudinal side and ends in a bearing surface for the bottom end side of the sound absorber element ,
  • the bottom-side cavity opening is open, preferably completely open or released or released, whereby sound without hindrance or so without reflection can penetrate into the cavity of the sound absorber element to its attenuation.
  • the lateral surface of the cavity is formed exclusively by parallel straight lines, for example structurally simply released, in which the sound absorber element is, for example, mat-shaped.
  • the sound-transporting gas is thus in direct contact with the inside of the sound-absorbing element and thus with both the outside surface and the inside surface of the sound-absorbing element, which can be used for a high level of soundproofing.
  • a frame-shaped frame only leads to a small coverage of the inner and / or outer surface of the sound absorber element, which can increase the contact surface between the sound absorber element and sound-transporting gas and thus the sound attenuation.
  • a stable sound absorber with significantly greater sound absorption capacity can thus be created.
  • the sound absorber element is formed as a hollow cylinder, an efficient sound absorber can be created in a structurally simple and cost-effective manner.
  • hollow cylindrical sound absorbers only sound absorber mats of a single type can be sufficient to form a cylindrical sound absorber element.
  • the sound absorber element has a cycloid-shaped, in particular hypocycloidal, 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 used for hollow cylindrical sound absorbers can be used.
  • deltoid-shaped cross sections threefold hypocycloids
  • astroid-shaped cross sections quaddrivalent hypocycloids
  • the desired shape of the sound absorber element can be constructed from simple flat mats.
  • a circular-cylindrical sound absorber element can be formed in frontally adjoining mats. It is also conceivable with combined ends of the mats to form a sound absorber element with a cycloid-shaped cross section. Furthermore, it can be ensured by the design of the bearing surfaces for a flat impact between two adjoining mats.
  • the covered by the frame surface of the sound absorbing element can be kept small and the sound-absorbing effect can be increased.
  • the straight structural elements are preferably made of metal, in particular of stainless steel, aluminum or other metal alloys, but can also be made of plastic.
  • the stability and cohesion of the sound absorbing element consisting of individual mats can be improved.
  • This can be distinguished in particular with sound absorber elements with a cycloid-shaped 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.
  • a structurally simple to produce and yet stable sound absorber may result if the straight components on the sound absorber element run outside.
  • Sound-open structures may in this case be formed in particular by perforations, holes, slots or large-area recesses.
  • the sound absorber can be hung easy to handle on guided through the eyelets ropes, chains or the like.
  • the suspension of the sound absorber can take place on a ceiling.
  • a suspension of the sound absorber at a distance of at least 30 cm to the ceiling prove to be particularly advantageous.
  • other possibilities of suspension such as flexible, mobile structures with which the sound absorber or a plurality of sound absorbers in the vicinity of a noise source is positioned, are conceivable.
  • Such mobile designs may be distinguished by a flexible acoustic shielding of special noise sources.
  • U-profiles and the straight components are connected by screw connections, a cost-effective sound absorber can also be created by the use of standardized components.
  • the U-profiles and the straight components can be connected to all common fastening means, such as by riveting, welding or gluing.
  • the sound absorption can be further increased if the sound absorber element is closed on the ceiling side with sound-absorbing material.
  • the sound absorber element has at least one cavity insert of sound-absorbing material detachably connected to the sound absorber, the sound absorption of the sound absorber can be further increased while maintaining the compact design.
  • this opens up the possibility of making an adaptation in the sound absorption, preferably for lower frequencies, such an adaptation is extremely manageable due to the outwardly open cavity feasible.
  • a textile fabric or knitted fabric can provide a sufficiently good dust protection.
  • textile sheaths can be exchanged in a simple manner and thus significantly increase the life of the sound absorber.
  • a particularly stable sound absorber can be created in this way.
  • melamine resin-based textile fabrics may also prove to be particularly advantageous as a textile protective covering, since in addition the fire-retarding properties of the sound absorber can be improved.
  • FIG. 1 is a sectional view of a sound absorber according to a first embodiment
  • FIG. 2 is a partially torn-away plan view of the sound absorber of FIG. 1 and FIG. 3 is an enlarged partial view of FIG. 1,
  • FIG. 4 is an enlarged partial view of another sound absorber with deltoid-shaped cross section according to a second embodiment
  • FIG. 5 is a partially torn plan view of the sound absorber shown in Fig. 4,
  • FIG. 6 is a partially torn-off plan view of a sound absorber with astroiden- shaped cross section according to a third embodiment.
  • This sound absorber 1 is constructed from a sound absorber element 4, which forms a cavity 24, wherein the sound absorber element 4 comprises the cavity 24, and which is held by a frame 5.
  • the frame 5 has two profiles 6, 7 bent into a circle, which are designed as bearing 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 form predetermined by the support surfaces 8, 9.
  • this frame has 5 attachment points 12 for the suspension of the sound absorber.
  • 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 by the sound absorbing element 4 includes and opens to the outside substantially unrestrained.
  • the surface 14, 15 of the sound absorber element 4 which is in contact with the sound-transporting gas is thus markedly enlarged, since now the surface 14 on the inside for the purpose of sound absorption is also accessible without any obstacles.
  • the frame-shaped frame 5 which runs along the longitudinal side of the sound absorber element 4 conceals the sound-absorbing surface 15 of the sound-absorbing element only to a small extent.
  • FIG. 2 a plan view of a hollow cylindrical sound absorber 1 is shown.
  • sound absorbers 100, 101 are also shown which have a zycolidenförmigen cross-section.
  • a sound absorber 100 with a threefold hypocycloidal (deltoid) cross section is shown in FIG. 5.
  • a sound absorber 101 having a four-fold hypocycloid-shaped (astroid-shaped) cross-section is shown in FIG.
  • a hollow sound absorber 100 with a hypocycloid-shaped cross-section can significantly increase the inner surface 14 of the sound absorber 101 (compare FIG. 4) compared to hollow-cylindrical sound absorbers 1, which leads to an overall more compact construction.
  • a further advantage of the enclosure of the sound absorber element 4 shown results when one or more mats 21, 121 form the sound absorber element 4.
  • these mats 21, 121 can be brought and held in the form of a circular cylindrical sound absorbing element 4, wherein between two juxtaposed mats 21, 121, a planar end-side joint 22 is formed.
  • a simple and inexpensive sound absorber 1 with a larger sound-absorbing surface 14, 15 can be formed.
  • the frame 5 consists of four symmetrically arranged components 16 which are straight in the area of the sound absorption element 4.
  • the covered surface 15 of the sound absorber element 4 is kept small and on the other hand an extremely simple, yet stable construction of the sound absorber 1 possible.
  • the sound absorber 100 has lateral profiles 26 which surround the mats 21, 121 and 122 in the respective joint 22.
  • the lateral U-shaped profiles 26 surround 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 embodiment in Fig. 1, are designed as rods 17.
  • the frame 5 acquires more stability and rigidity, while at the same time being lighter in construction.
  • These rods 17 are in particular mounted on the outside of the sound absorbing element 4, whereby in addition a simplified assembly can be ensured.
  • any number (more or less) of straight components 16, in symmetrical or asymmetric arrangement, are conceivable to form the shell of the frame-shaped frame 5 therewith.
  • This frame jacket can be provided inside and / or outside to the sound absorber element 4.
  • the straight components 16 may have a sound-open structure formed by openings 27. This can be perforated about the outside, on the frame 5 rods 17 or holes, slots or large recesses exhibit. As a result, it can be prevented that sound impinging on the rods 17 is reflected, but is absorbed by the sound absorber element 4 lying behind it.
  • attachment points 12 may be formed by eyelets 18 in particular, as shown in Fig. 2. These offer a simple yet reliable way to hang the sound absorber 1 in the room 3 free.
  • the suspension can be carried out with the aid of cables 19 guided through the eyelets 18, chains, flexible tension elements or the like.
  • Other embodiments of the attachment points 12 on the straight components 16 are conceivable, but not shown.
  • Fig. 1 and the enlarged detail shown in Fig. 3 show that the bearing surfaces 8, 9 of the frame are designed as U-profiles 6, 7. These U-profiles 6, 7 each include one of the two end faces 10, 1 1 of the sound absorber element 4 a. 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-profile 7 are connected to each other via the rods 17 of the frame 5, which further increases the stability of the frame 5.
  • the illustrated screw 20 represents an easy to betechnikstelligende connection between rods 17 and U-profile 6, 7.
  • other joining techniques such as welding, soldering, riveting, gluing and the like are conceivable.
  • a stable sound absorber 1 is ensured by this type of recording for the sound absorber element 4.
  • the ceiling side of the hollow cylindrical sound absorber element 4 is closed in this embodiment. This prevents the sound entering through the bottom-side cavity opening 13 from escaping 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 can be seen in Fig. 1.
  • the cavity insert 25 is made of sound-absorbing material 23 and releasably connected to the sound absorber 1, so that this can be removed as needed, the sound absorber to make an adjustment of the sound absorption. It is conceivable that a plurality of adjoining or spaced-apart, cavity inserts 25 are provided in order to further improve the sound absorption at certain frequencies, which has not been shown in detail in the figures.
  • the sound absorber 100 is completely covered by a textile protective cover 28 which protects the sound absorber element 4 from contamination.
  • the exemplary embodiments of sound absorbers 100, 101 according to FIGS. 4, 5 and 6 differ from the sound absorber 1 according to FIG. 1 essentially in the cross-sectional form.
  • 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 on the front side, but instead form a joint 22 at the end or at the end of their longitudinal sides, as shown in FIG of FIGS. 5 and 6 can be seen.
  • the sound absorber 100 according to FIGS. 4 and 5 forms the sound absorber element 4 with three mats 21, 121, 122, whereas the sound absorber 101 according to FIG. 6 discloses four mats 21, 121, 122 and 123.
  • the straight components 16 of the sound absorbers 100, 101 after the Figures 4, 5 and 6 additionally lateral profiles 26 which hold together the mats 21, 121, 122, 123 along their respective abutment 22.
  • these U-shaped profiles 26 grasp the mats 21, 121, 122, 123 in the respective joint 22 along the longitudinal side of the sound absorber element 4.

Landscapes

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

Abstract

L'invention concerne un absorbeur de bruit (1, 100, 101) destiné à être suspendu librement dans une pièce (3) et comprenant un élément absorbeur de bruit (4) qui forme une cavité (24), un châssis (5) qui soutient l'élément absorbeur de bruit (4) et qui présente au moins un point de fixation (12) pour suspendre l'absorbeur de bruit (1) et au moins deux surfaces d'appui (8, 9) opposées, sur lesquelles porte respectivement une extrémité frontale (10, 11) de l'élément absorbeur de bruit (4). Afin d'obtenir un haut niveau d'absorption sonore, l'ouverture de la cavité (13) ménagée au fond de la cavité (24) de l'élément absorbeur de bruit (4) est ouverte vers l'extérieur de l'absorbeur de bruit (1), le châssis (5) en forme de cadre, à cet effet, s'étendant longitudinalement le long de l'élément absorbeur de bruit (4) et se terminant dans une surface d'appui (9) de l'extrémité frontale (11) située au fond de l'élément absorbeur de bruit (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 true EP3103114A1 (fr) 2016-12-14
EP3103114B1 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 (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2015117176A1 *

Also Published As

Publication number Publication date
ES2886153T9 (es) 2022-01-27
ES2886153T3 (es) 2021-12-16
AT515382B1 (de) 2015-12-15
EP3103114B1 (fr) 2021-06-02
WO2015117176A1 (fr) 2015-08-13
AT515382A1 (de) 2015-08-15

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