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EP0697051B1 - Faux plafond - Google Patents

Faux plafond Download PDF

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Publication number
EP0697051B1
EP0697051B1 EP94915072A EP94915072A EP0697051B1 EP 0697051 B1 EP0697051 B1 EP 0697051B1 EP 94915072 A EP94915072 A EP 94915072A EP 94915072 A EP94915072 A EP 94915072A EP 0697051 B1 EP0697051 B1 EP 0697051B1
Authority
EP
European Patent Office
Prior art keywords
false ceiling
holes
ceiling
panels
air
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.)
Expired - Lifetime
Application number
EP94915072A
Other languages
German (de)
English (en)
Other versions
EP0697051A1 (fr
Inventor
Helmut Fuchs
Dietmar Eckoldt
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.)
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
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 Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Priority to SI9430031T priority Critical patent/SI0697051T1/xx
Priority claimed from PCT/EP1994/001227 external-priority patent/WO1994024382A1/fr
Publication of EP0697051A1 publication Critical patent/EP0697051A1/fr
Application granted granted Critical
Publication of EP0697051B1 publication Critical patent/EP0697051B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/001—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by provisions for heat or sound insulation
    • 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
    • E04B2001/8263—Mounting of acoustical elements on supporting structure, e.g. framework or wall surface
    • E04B2001/8281—Flat elements mounted parallel to a supporting surface with an acoustically active air gap between the elements and the mounting surface
    • 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
    • E04B2001/8423—Tray or frame type panels or blocks, with or without acoustical filling
    • E04B2001/8433—Tray or frame type panels or blocks, with or without acoustical filling with holes in their face
    • 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
    • E04B2001/8423—Tray or frame type panels or blocks, with or without acoustical filling
    • E04B2001/8442—Tray type 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
    • 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

Definitions

  • the invention relates to a false ceiling, as is known from Frick, O. et al "Baukonstru proceedingsslehre", Part 1., Teubner, Stuttgart 1992 and EP 0023618 A1.
  • a sound-absorbing building board is known with a sound-absorbing layer on perforated metal plates with a perforation area fraction ⁇ of 4 - 40%, which would allow the sound to pass through practically undamped if a sound-absorbing layer were not attached in front of the perforated plate on the room side, or how shown on page 2, paragraph 2, according to the state of the art, behind the perforated plate.
  • the sound-absorbing layer consists of a fibrous carrier in the form of a fleece or fabric.
  • Substructures "suspended" from massive, load-bearing floor ceilings are used as preferably light, largely industrially prefabricated, dry and easy to install ceiling systems on a large scale and with a wide range of variants.
  • ceiling cladding and suspended ceilings take on both decorative and constructional functions.
  • the UD installed as cladding at a certain distance from the solid ceiling, the UD often helps to meet various building physics requirements for the building with regard to thermal insulation, fire protection and sound insulation. However, it is also suitable as a facing for the lighting, room design and room acoustic adaptation of individual rooms to their individual use. Finally, larger voids between the raw ceiling and the UD also serve for the hidden laying / integration of pipelines, cable connections, outlets and inlets of the various building services systems.
  • Figure 1 shows a conventional reactive absorber according to Frick et al, with a) a plate resonator, b) a Helmholtz resonator and figure c) the degree of absorption.
  • the UD is not only used for decorative and acoustic purposes, but also as a (low-pressure) ventilation ceiling, (radiation) heating ceiling or (surface) cooling ceiling, it should also take on other technical functions at the same time, then the acoustically unavoidable fibrous / porous damping material as a serious disadvantage: It would not only hinder assembly and installation, but also maintenance and operation of the systems. Therefore, there is an urgent need for UD systems that meet the spatial and building acoustic requirements without the use of porous absorbers and at the same time meet the structural requirements better than conventional acoustic ceilings.
  • H. 1, pp. 1-11 come without porous / fibrous material. But you still need 5-10 cm deep hollow chambers. Due to their three-shell structure on a relatively narrow-meshed (10-20 cm) honeycomb structure, they are also much too complex and expensive as a UD component for normal acoustic ceilings. The latter come at most as completely closed metal cassettes in the Ceiling cavity or as an integrated UD component to supplement the absorption at low frequencies in rooms with special room acoustic requirements.
  • the object of the invention is to provide a fiber-free acoustic false ceiling that absorbs broadband.
  • the new ceiling tile absorber can be used as a UD by means of length-variable suspensions or substructures suspended from the solid ceiling in all areas of application listed under 1. and equipped with all the properties and functions specified under 1. and 2. without the disadvantages mentioned under 4. having.
  • Fiber-free UD as a sound-absorbing boundary of the ceiling cavity as a sound-transmitting channel, which, in the manner of the damping mechanisms described under (b), executes damped vibrations excited and damped by the channel-side sound field in a wide frequency range and thus helps to reduce longitudinal transmission to the neighboring room.
  • the UD component made of flat, micro-perforated ceiling panels with high density on the room side enables complete industrial prefabrication.
  • the extremely small holes allow complete privacy, the visual impression of a closed ceiling area and possibilities for decorative loosening of the ceiling.
  • the fiber-free plate components can be used to create almost any shape Train reflectors for lighting, outlets and inlets for ventilation and radiators for heating, without having to forego their acoustic effectiveness.
  • the UD components offer ideal conditions for assembly, disassembly and reassembly and are completely and inexpensively traceable due to their simple, homogeneous construction.
  • the UD components also meet a very current trend in cooling of administrative buildings and assembly facilities in summer: with so-called "Chilled ceilings" made of largely standardized metallic components can save the high fan output, which can easily account for 50 % of the operating costs in conventional air conditioning systems. This also helps to reduce CO 2 emissions and eliminates an often very annoying source of drafts, noise pollution and allergies in living and working spaces.
  • thermal insulation e.g.
  • the distance between the cooling lamella and insulation, lamella thickness, hole diameter and number of holes per m 2 can be coordinated so that an optimal adaptation to the reverberation time of the room or the emission spectrum of the sound sources installed in it.
  • the fiber-free, micro-perforated UD components also offer clear advantages over conventional systems when it comes to heating and ventilation ceilings.
  • FIGS. 8, 9, 10 is to be explained in relation to the prior art according to FIGS. 1 to 7.
  • Figure 1 shows reactive absorbers.
  • Figure 1a shows a plate resonator, in which the plate vibrates as a mass in front of the air cushion as a spring, but porous material is required, for example, as edge damping in order to achieve a somewhat broadband damping behavior as in Figure 1c.
  • Figure 2 manages to excite a large number of different plate vibrations at different frequencies in a very complex bucket structure in such a way that an overall broadband absorption spectrum at medium frequencies is achieved, even without the use of porous material.
  • 15 is the cover membrane
  • 16 is the porous material with a waterproof cover 17 or mechanical protection 18.
  • Below the cover membrane 15 is the perforated membrane 14 and the rear wall 12 is spaced therefrom.
  • Both the cover membrane, perforated membrane and rear wall are vibrating components, so no rigid plates. The membranes are excited to vibrate and thereby extract the energy from the sound.
  • the holes in the perforated membrane 14 fluctuate between 3-10 mm.
  • 13 represents the walls of the honeycomb structure, 11 is the cavity that is usually filled with air.
  • This membrane absorber can also be manufactured as a module, wherein the membranes 12, 14, 15 and 13 can consist of plastic or metal.
  • porous absorbers It is also known to cover large-volume porous absorbers with perforated plates, but the perforated plates are only intended to provide mechanical protection.
  • porous absorbers are e.g. pressed mineral fiber boards, which are placed behind suspended ceilings, often for practical reasons these fiber boards are glued with a thin aluminum foil or wrapped in plastic film. Since it is known that the penetration of the sound waves into the passive absorber is largely prevented, the film is made “sound-permeable" by "needling" with a large number of small holes.
  • Figure 6 shows the absorption spectrum from Maa, D.-Y. "Theory and design of microperforated panel sound absorbing constructions". Scientia Sinica 18 (1975), H. 1, 55-71, a micro-perforated plate being arranged in front of a rigid wall. However, this theoretical investigation has never found any technical application.
  • the false ceiling according to the invention relates to at least one micro-perforated sheet or a micro-perforated plate made of plastic in front of a non-vibrating wall 5 or rear wall 7, which does not require any sound-absorbing elements or additional porous or fibrous damping materials in the air gap.
  • the air in the holes in the false ceiling only transmits the sound vibrations of the sound waves hitting the perforated sheets into the damping material behind. Only there is the sound energy converted into heat by friction on the fibers or in the pores of the insulating material, thereby reducing the sound energy.
  • the false ceiling according to the invention is simple to manufacture, easy to install and not expensive, since it consists only of the finely perforated perforated sheets and the lateral boundary surfaces of the air space and the flat rear wall or plate.
  • the holes with a diameter of preferably 0.4-0.8 mm do not serve as "breakthroughs" for the unimpeded penetration of the sound energy into the air space between the ceiling and ceiling.
  • the extremely small perforation area fraction of a maximum of 3%, preferably ⁇ 2%, for the purpose according to the invention would be even less suitable for the (passive) transmission of sound energy from the room into the intermediate space than the perforations according to the prior art, since these perforation surface areas between 15 - have 50%.
  • the air in the holes of the microperforated perforated sheet according to the invention acts as a very special mass-spring vibration system, which (reactively) can be excited to vibrations in the frequency range of interest by the sound field impinging on the microperforated perforated sheet becomes.
  • the tuning to the respective frequency range takes place through a very targeted choice of the geometric parameters, in particular the thickness of the perforated plates, the thickness of the air gap, the diameter of the holes, the spacing of the holes, the shape of the holes, the proportion of perforation in the total area of the perforated plate and the shape of the perforated plate .
  • the choice of hole geometry not only determines the frequency range of the absorption, but also the effectiveness of the absorber in this frequency range.
  • the necessary damping is not achieved by attaching additional porous or fibrous "swallowing substances" as shown in Fig. 1a or Fig. 7, but entirely by friction of the air particles in the narrow holes on their walls.
  • the desired frequency range and the required friction can be optimally adjusted to the respective application, so that an almost complete absorption of the incident sound energy is possible.
  • the plates are so thick and stable that they cannot be excited to vibrate by the impinging sound waves.
  • the plate if it were designed to vibrate, as shown in Figure 8, would at best oscillate as a spring-mass system at very low frequencies and only in a narrow band, in accordance with the dashed curve 1, and thereby absorb.
  • the microperforation, curve 2, causes a relatively broadband absorption at medium and higher frequencies as shown in Figure 8, because only the lighter air in the holes as a mass resonates with the air in the cavity as a spring.
  • Arranged rigid micro-perforated plates can, as shown in Figure 9, achieve an even broader absorption curve without additional damping material having to be introduced, or having to vibrate solid parts in the manner of a resonator.
  • Fig. 10a-e shows the false ceiling according to the invention, wherein Fig. 10e shows the false ceiling as a module, which is then installed in a cassette shape under the ceiling as a false ceiling.
  • Fig. 10 denote the flat micro-perforated plate made of sheet metal or hard plastic with holes 4 and 7, a flat oscillatable plate as the rear wall of the module.
  • 3b is the rigid frame of the module and 11 the voids or spaces that are filled with air.
  • 3 are suspensions and 3a e.g. Beams or a substructure for supporting the false ceiling or facing shell. Since the panels or modules are supplied in units of approximately 1 square meter, different distances between the ceiling D and the rear wall can be realized via the suspensions 3 or substructure 3a, thereby broadening the absorption spectrum.
  • 2 are stiffeners of the plates 1, 6, which of course can also be arranged over the entire length and width of the plate so that it does not vibrate.
  • Figure 11 shows the spectrum of a micro-perforated plate made of aluminum with a plate thickness of 0.15 mm, hole diameter 0.16 mm, hole spacing 1.2 mm and thickness of the air layer in the space between plate and back wall or ceiling of 600 mm and one by hole diameter and distance given hole area proportion p of 1.4%.
  • ⁇ hole area / total area, D the air layer thickness in the space and K m a constant that is proportional to the hole diameter multiplied by the root of f
  • the parameters plate thickness, hole area percentage can then be used or the number of holes for a certain hole diameter and air gap D vary within certain limits.
  • a broadening of the spectrum is also obtained when the plate is slightly curved downwards, for example with a plate width of 1000 mm and a curvature of 60-80 mm.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Claims (7)

  1. Faux plafond destiné à des pièces situées dans des bâtiments, conçus pour absorber les ondes sonores et composés de plaques (1),
    - qui peuvent être suspendues à une distance (D) du plafond brut (5) par des suspentes (7) de longueurs variables ou par l'intermédiaire de structures sous plafond (3a),
    - qui sont suffisamment rigides pour ne pas vibrer et qui sont percées d'une multitude de trous (4) répartis régulièrement ou non, présentant un diamètre inférieur à 2 mm avec un taux d'occupation superficielle inférieur à 3 %,
    caractérisé en ce que
    l'air situé dans les trous (4) constitue, avec l'air situé dans les volumes creux (11) situés au-dessus, un système ressort-masse, sans que du matériau amortisseur de sons poreux ou fibreux, soit fixé dans les volumes creux (11).
  2. Faux plafond selon la revendication 1,
    caractérisé en ce que
    les trous (4) ont un diamètre d allant de 0,1 à 1 mm, de préférence 0,2 à 0,8 mm, et leur taux d'occupation superficielle est inférieur à 2 %.
  3. Faux plafond selon la revendication 1,
    caractérisé en ce que
    il comporte plusieurs plaques (1, 6) disposées les unes derrière les autres, à des distances D croissantes, par rapport au plafond.
  4. Faux plafond selon les revendications 1 à 3,
    caractérisé en ce que
    les plaques (1, 6) sont en métal, en matière plastique, en matériau composite ou en bois.
  5. Faux plafond selon les revendications 1 à 4,
    caractérisé en ce que
    le faux plafond, pour éviter son fléchissement, est équipé de raidisseurs.
  6. Faux plafond selon les revendications 1 à 5,
    caractérisé en ce que
    les plaques (1, 6) sont bombées vers le bas.
  7. Faux plafond selon les revendications 1 à 6,
    caractérisé en ce que
    les plaques (1, 6) associées à un cadre latéral (3b) et une paroi arrière (7), forment un module.
EP94915072A 1993-04-20 1994-04-20 Faux plafond Expired - Lifetime EP0697051B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9430031T SI0697051T1 (en) 1993-04-20 1994-04-20 False ceiling

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4312885A DE4312885A1 (de) 1993-04-20 1993-04-20 Unterdecke
DE4312885 1993-04-20
PCT/EP1994/001227 WO1994024382A1 (fr) 1993-04-20 1994-04-20 Faux plafond

Publications (2)

Publication Number Publication Date
EP0697051A1 EP0697051A1 (fr) 1996-02-21
EP0697051B1 true EP0697051B1 (fr) 1997-01-02

Family

ID=6485917

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94915072A Expired - Lifetime EP0697051B1 (fr) 1993-04-20 1994-04-20 Faux plafond

Country Status (9)

Country Link
US (1) US5740649A (fr)
EP (1) EP0697051B1 (fr)
JP (1) JPH09502490A (fr)
CN (1) CN1074492C (fr)
AT (1) ATE147118T1 (fr)
DE (2) DE4312885A1 (fr)
DK (1) DK0697051T3 (fr)
ES (1) ES2098938T3 (fr)
GR (1) GR3022213T3 (fr)

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DE19730355C1 (de) * 1997-07-15 1999-03-18 Fraunhofer Ges Forschung Schallabsorber in Lüftungskanälen
EP1146178A2 (fr) 2000-04-14 2001-10-17 FAIST Automotive GmbH & Co. KG Elément de construction pour murs, planchers et plafonds à large spectre d'absorbtion sonore
DE10019543A1 (de) * 2000-04-20 2001-10-31 Fraunhofer Ges Forschung Zuluftelement
WO2012149659A2 (fr) 2011-05-04 2012-11-08 H.D.S Technology Ag Construction de délimitation d'espace, son procédé de fabrication et élément pour ladite construction

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DE19754107C1 (de) * 1997-12-05 1999-02-25 Fraunhofer Ges Forschung Schallabsorber
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WO2007053878A1 (fr) 2005-11-08 2007-05-18 Resmed Ltd Ensemble nasal
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US9254370B2 (en) 2006-11-14 2016-02-09 Resmed Limited Frame and vent assembly for mask assembly
DE502007004772D1 (de) * 2007-01-29 2010-09-30 Albers & Co Akustikelemente
JP5326472B2 (ja) * 2007-10-11 2013-10-30 ヤマハ株式会社 吸音構造
DE202007017699U1 (de) * 2007-12-19 2009-02-26 VS Vereinigte Spezialmöbelfabriken GmbH & Co. KG Trennwandelement
US20090181242A1 (en) * 2008-01-11 2009-07-16 Enniss James P Exterior window film
JP5402025B2 (ja) * 2008-02-01 2014-01-29 ヤマハ株式会社 吸音構造および音響室
EP2085962A2 (fr) * 2008-02-01 2009-08-05 Yamaha Corporation Structure absorbant les sons et composant de véhicule doté de propriétés absorbant les sons
CN101787750B (zh) * 2009-12-18 2011-04-20 杭州电子科技大学 基于铁电材料的吸声减噪装置
US8999509B2 (en) 2011-04-27 2015-04-07 Cpfilms Inc. Weather resistant exterior film composite
CN104299608A (zh) * 2013-07-17 2015-01-21 青钢金属建材(上海)有限公司 吸音减噪组件及其方法
CN105161089B (zh) * 2015-06-17 2019-10-15 成都斯铂润音响设备有限公司 一种吸声装置
JP2019535619A (ja) 2016-11-04 2019-12-12 コーニング インコーポレイテッド 微細穿孔板システム、用途、および微細穿孔板システムを作る方法
JP6591697B2 (ja) * 2016-11-29 2019-10-16 富士フイルム株式会社 防音構造
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DE3032269A1 (de) * 1980-08-27 1982-04-08 Hoechst Ag, 6000 Frankfurt Resonatorschallabsorptionselement
US4529637A (en) * 1983-08-24 1985-07-16 Hankel Keith M Acoustical material
SU1308728A1 (ru) * 1985-08-30 1987-05-07 Центральный Научно-Исследовательский И Проектный Институт Типового И Экспериментального Проектирования Комплексов И Зданий Культуры,Спорта И Управления Им.Б.С.Мезенцева Светопроницаемый подвесной потолок
DE3705916C2 (de) * 1987-02-25 1996-06-13 Profil Vertrieb Gmbh Unterkonstruktionen für gewölbte Abhängedecken
JP2805630B2 (ja) * 1989-03-20 1998-09-30 三晃金属工業株式会社 吸音断熱屋根及び天井構造

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19730355C1 (de) * 1997-07-15 1999-03-18 Fraunhofer Ges Forschung Schallabsorber in Lüftungskanälen
EP1146178A2 (fr) 2000-04-14 2001-10-17 FAIST Automotive GmbH & Co. KG Elément de construction pour murs, planchers et plafonds à large spectre d'absorbtion sonore
DE10019543A1 (de) * 2000-04-20 2001-10-31 Fraunhofer Ges Forschung Zuluftelement
DE10019543C2 (de) * 2000-04-20 2002-03-07 Fraunhofer Ges Forschung Zuluftelement
WO2012149659A2 (fr) 2011-05-04 2012-11-08 H.D.S Technology Ag Construction de délimitation d'espace, son procédé de fabrication et élément pour ladite construction
US9273870B2 (en) 2011-05-04 2016-03-01 H.D.S. Technology Ag Room enclosure assembly, method for producing same and element therefor

Also Published As

Publication number Publication date
DK0697051T3 (da) 1997-01-20
GR3022213T3 (en) 1997-04-30
CN1121364A (zh) 1996-04-24
DE59401480D1 (de) 1997-02-13
ATE147118T1 (de) 1997-01-15
ES2098938T3 (es) 1997-05-01
JPH09502490A (ja) 1997-03-11
DE4312885A1 (de) 1994-10-27
CN1074492C (zh) 2001-11-07
US5740649A (en) 1998-04-21
EP0697051A1 (fr) 1996-02-21

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