EP0817164A1 - Geräuschabsorbierende Strukturen und daraus hergestellte Wände - Google Patents

Geräuschabsorbierende Strukturen und daraus hergestellte Wände Download PDF

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Publication number
EP0817164A1
EP0817164A1 EP97401411A EP97401411A EP0817164A1 EP 0817164 A1 EP0817164 A1 EP 0817164A1 EP 97401411 A EP97401411 A EP 97401411A EP 97401411 A EP97401411 A EP 97401411A EP 0817164 A1 EP0817164 A1 EP 0817164A1
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EP
European Patent Office
Prior art keywords
membrane
structure according
dissipation
frame
plates
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
EP97401411A
Other languages
English (en)
French (fr)
Other versions
EP0817164B2 (de
EP0817164B1 (de
Inventor
Jean-Claude Guilloud
Dominique Collin
Jacques Julliard
Christine Fumoux
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.)
Safran Aircraft Engines SAS
Bertin Technologies SAS
Original Assignee
Bertin et Cie SA
Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA
SNECMA SAS
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.)
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Publication date
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Application filed by Bertin et Cie SA, Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA, SNECMA SAS filed Critical Bertin et Cie SA
Publication of EP0817164A1 publication Critical patent/EP0817164A1/de
Application granted granted Critical
Publication of EP0817164B1 publication Critical patent/EP0817164B1/de
Publication of EP0817164B2 publication Critical patent/EP0817164B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects

Definitions

  • the invention generally relates to structures of noise absorption and walls formed by means of these structures and more particularly such light and compact structures, applicable especially in the aeronautical industry for equipment reactors, their nacelles and aircraft cabins, in the transportation industry, in the building, etc ...
  • the object of the present invention is to provide important improvements to these structures.
  • Its purpose is light structures of aforementioned type and whose acoustic impedances are modifiable, adjustable or controllable and likely to monitor changes in the noise sources to be absorbed.
  • a structure noise absorption including a support frame on which is stretched and fixed a waterproof membrane whose outside the frame receives acoustic waves, a gas such as air filling a volume delimited by the frame and the membrane, and means for energy dissipation housed in this volume, characterized in that the means of dissipation are of the type gas rolling, electrostatic type or type electromagnetic and are changeable, adjustable or controllable for modification or adaptation of the impedance acoustics of said structure with the characteristics of noise to absorb.
  • the structures according to the invention thanks to the their acoustic impedances can be changed or adjustable, can be designed or adjusted to absorb incident noise or to deflect it by reflection, by example according to the positions they occupy in a noise absorbing or protective wall the noise.
  • the energy dissipation means are of the rolling type gas and include plates arranged inside from the frame, a short distance from the membrane, and means modification of this distance.
  • the means at gas rolling dissipation include at least one gas flow passage connecting a closed chamber delimited inside the frame by the membrane at a another room located inside said structure.
  • this passage can be a conduit formed between two superimposed plates associated with means for modifying or adjusting the distance between them for modification or adjustment of the section of passage of the conduit.
  • the means dissipation to gas rolling include rods carried by the membrane and extending perpendicularly to it inside the frame in fixed tubes which are closed at their opposite end to the membrane and which delimit with the rods of the annular conduits of gas rolling.
  • the means of energy dissipation include electrode plates arranged parallel to the membrane at a distance therefrom, and to the minus another electrode formed on the membrane and connected with said plates to polarization means such as a direct current source associated with a electrical or electronic circuit comprising elements of energy dissipation by Joule effect.
  • the membrane may have one or more several metallized areas opposite the plates aforementioned electrodes, or it is made in one electrically charged plastic, in which case polarization means are not required.
  • the elements of energy dissipation by Joule effect include for example resistance electric, advantageously adjustable, the structure according to the invention then comprising means controlled from adjustment of the value of this resistance for adaptation acoustic impedance.
  • the means of energy dissipation are of the electromagnetic type and include electrical conductors moved by the membrane in relation to magnetic elements carried by the framework or constituted by it, the conductors aforementioned electrics comprising for example windings connected to the membrane or one or more circuits printed or deposited on the membrane.
  • a membrane can be used magnetic displaceable relative to a circuit electric.
  • each aforementioned structure is closed from tightly sealed and contains an expandable volume element and contractile such as a balloon or a bellows by example, filled with air and communicating with the outside by a static pressure equalization orifice, this element occupying a significant fraction of the volume of said structure.
  • an expandable volume element and contractile such as a balloon or a bellows by example
  • This feature compensates for influences of variations in pressure and external temperatures on the membrane of the structure noise absorption.
  • Each structure of the aforementioned type is intended to be juxtaposed and assembled to a plurality of structures of the same type to form a flat wall or curved, convex or concave in which the structures have similar or different acoustic impedances to absorb noise or deflect it by reflection according to cases.
  • the means of energy dissipation of at least some of the structures are associated with means for controlling, adjusting or themselves piloted by a system of data processing.
  • the noise absorption structure according to the invention includes essentially a thin, gas-tight membrane 10 which is stretched and fixed on the upper side of a frame support 12 whose upper part is formed with partitions perpendicular to the membrane and whose lower part 16 has a bottom wall 18 parallel to the membrane.
  • the membrane 10 can be produced in particular by plastic, elastomer, metal or any material to make a membrane sufficiently fine and flexible to be deformable by waves acoustic to absorb.
  • This membrane being fragile, acoustically transparent means (not shown) are designed to cover it and protect it from attack external mechanical, these means being for example constituted by a metallic fabric associated with a layer glass wool or the like.
  • the support frame 12 is made in all suitable rigid material, in particular of metal or plastic, depending on the application for which the structure according to the invention is intended.
  • the membrane 10 can be fixed on the frame 12 by its edges 20 folded over the periphery of the part upper part of the frame 12.
  • An entourage 22 can be attached to the periphery of the frame 12 as shown schematically in Figure 1 to ensure the connection of structures together, for example by means 24 attachment or assembly such as studs and dovetail grooves.
  • the structure according to the invention forms a waterproof enclosure
  • an element 26 liable to contract and expand according to pressure variations static and / or temperature outside the noise absorption structure according to the invention, this element 26 which may consist of a flexible balloon or a bellows connected to the outside by a passage or orifice 28 of static pressure equalization, crossing through example the bottom wall 18 of the frame 12.
  • This element 26 occupies a relatively significant volume delimited by frame 12 and the membrane 10, for example about a third of this volume.
  • the pressure or the gas temperature rises or falls so corresponding to the interior of element 26 and compensates at least partially the pressure variations at inside the structure, which makes it possible to membrane 10 almost insensitive to variations in external static pressure and temperature.
  • the elements 26 allow each structure to be adapted to The evolution of the static pressure in the duct.
  • the membrane 10 can be fixed by gluing on the upper peripheral part of the frame 12, as already indicated, as well as on the upper edges of the partitions internal 14 of frame 12.
  • the internal partitions 14 of the frame 12 can be replaced by studs 30 perpendicular to the membrane and on the ends which the membrane can be fixed by gluing.
  • the studs 30 can be carried by a perforated plate 32, by a grid, or by any other appropriate means.
  • the noise absorption structure according to the invention also includes means of dissipation of energy of which various embodiments are shown by way of example in FIGS. 4 to 13.
  • the means of dissipation are of the gas rolling type, (for example air).
  • the internal partitions 14 of the frame 12 delimit with the membrane 10 of the chambers 34 closed by a wall bottom 36 and which communicate with the lower volume of the frame 12 by a conduit 38 of relatively cross section small and relatively long compared to to its section, allowing energy dissipation by laminar gas flow.
  • conduit 38 is replaced by a channel 40 formed in hollow in the upper face of the bottom wall 36 to which is associated with a cover plate 42 which constitutes the upper wall of the channel 40.
  • An orifice 44 of the plate 42 connects the chamber 34 to the channel 40, while an orifice 46 of the bottom wall 36 connects the channel 40 at the lower volume of the frame 12.
  • the channel 40 can be formed in a spiral in the bottom wall 36 of the chamber 34.
  • the membrane 10 deforms and behaves like a very damped oscillator whose center frequency is a function of the voltage of the membrane, its density and thickness, among others.
  • the deformation of the membrane causes a laminar gas flow in the means of dissipation of energy constituted by the conduit 38 or the channel 40.
  • the acoustic impedance of a structure according to the invention is perfectly suited to the characteristics incident noise when it is completely absorbed, without reflection by the membrane.
  • the invention provides means for modify, adjust or control this impedance acoustic.
  • the means of energy dissipation include a channel 40 of the type shown in Figures 5 and 6, the modification or adjustment of the acoustic impedance can be obtained by variation of the cross section of channel 40.
  • the means of energy dissipation include a channel 40 of the type shown in Figures 5 and 6, the modification or adjustment of the acoustic impedance can be obtained by variation of the cross section of channel 40.
  • the means 50 being for example of the memory type of shape or piezoelectric type, controlled by a appropriate electrical circuit.
  • the membrane 10 carries rods 52 which extend to inside the support frame, perpendicular to the membrane, and which are engaged in tubes 54 carried by an intermediate wall 36 of the support frame, so that the displacement of the rods 52 in the tubes 54 caused by deformations of the membrane 10 results in a laminar gas flow in the tubes 54 and by a corresponding energy dissipation.
  • the energy dissipation means are also of the gas rolling type and comprise horizontal plates 56 arranged parallel to the membrane 10 and at a short distance from the latter inside the support frame, these plates 56 being carried by means 58 making it possible to modify the distance d between the membrane 10 and the plates 56.
  • these means 58 are carried by the intermediate wall 36 and include controlled shape memory elements by an appropriate electrical circuit 60.
  • the means of energy dissipation include electrode plates 62 arranged inside the frame of support, parallel to membrane 10 and low distance from it, and for example carried by the wall intermediate 36 of the support frame through dielectric elements 64.
  • the membrane 10 includes electrodes associated with the plates 62, such for example that metallized areas 66 of its surface, these areas 66 and the plates 62 being connected to the poles of a source 68 direct current through an element of energy dissipation such as electrical resistance 70 which is advantageously a variable resistance controlled by an appropriate means 72, the resistor 70 absorbing energy by Joule effect and the variation of its value to modify the acoustic impedance of the structure according to the invention.
  • holes 74 are drilled in the electrode plates 62 to avoid any effect of gas rolling between them and the membrane 10.
  • the electrostatic attraction exerted by plates 62 on the membrane plays the role of an anti-stiffness dynamic which opposes the stiffness of the gas contained in the structure. This reduces the total thickness (or height) of the structure and therefore its size.
  • the membrane 10 and / or the plates electrodes 62 could consist of an electret, such as a plastic like polyurethane or PVDF electrically charged in permanence, the polarization means of the electrodes then being deleted.
  • the means of energy dissipation are of the type electromagnetic.
  • the membrane 10 is connected, to inside the frame, to electrical windings 76 movable relative to magnetic elements 78 constituting for example the intermediate wall 34 of the support frame.
  • the parts 78 projecting towards the membrane may be drilled through holes 80.
  • magnetic elements 82 for example magnets permanent
  • electrical conductors 84 are carried by this last, by being constituted for example by one or more electrical circuits printed or deposited on the membrane. The displacement of these electrical conductors 84 in the magnetic field lines of the elements 80 results in energy dissipation.
  • the support frame 12 which can be made of magnetic material and constitute a magnet permanent whose field lines can be cut by the electrical conductors 84 of the membrane 10 for an energy dissipation effect.
  • a magnetic membrane that moves relative to a electrical circuit to dissipate energy.
  • the elementary noise absorption structures which have just been described can be assembled together to form flat, curved, concave or convex walls, of large dimension.
  • the elementary structures of FIGS. 4, 5, 8 and 9 may have dimensions, on the surface, of the order of 5 ⁇ 5 cm 2 and be combined to form a structure of the type of that represented in FIG. 1 having a surface of the order of 20 x 20 cm 2 , the heights of these structures generally being between 15 and 50 mm.
  • the acoustic impedances of elementary structures can be adjusted individually or in small groups of structures.
  • Adjusting the acoustic impedances makes it possible to have a well-adapted impedance for certain surface areas of a wall with maximum absorption of the incident noise, while other surface areas of the wall will have different impedances to partially absorb the noise. incident and partially reflect it in a determined direction.
  • the possibility of adjusting the acoustic impedance of each elementary structure provides a spatial evolution of acoustic characteristics of a wall.
  • the structures according to the invention such as those of Figure 2, adapt automatically at variations in static pressure external and for example to the evolution of the pressure static in a duct.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
EP97401411A 1996-06-28 1997-06-19 Geräuschabsorbierende Strukturen und daraus hergestellte Wände Expired - Lifetime EP0817164B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9608064 1996-06-28
FR9608064A FR2750527B1 (fr) 1996-06-28 1996-06-28 Structures d'absorption de bruit et parois constituees de ces structures

Publications (3)

Publication Number Publication Date
EP0817164A1 true EP0817164A1 (de) 1998-01-07
EP0817164B1 EP0817164B1 (de) 2001-11-28
EP0817164B2 EP0817164B2 (de) 2004-08-25

Family

ID=9493519

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97401411A Expired - Lifetime EP0817164B2 (de) 1996-06-28 1997-06-19 Geräuschabsorbierende Strukturen und daraus hergestellte Wände

Country Status (5)

Country Link
US (1) US6332027B1 (de)
EP (1) EP0817164B2 (de)
CA (1) CA2209302C (de)
DE (1) DE69708523T3 (de)
FR (1) FR2750527B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998022934A1 (en) * 1996-11-15 1998-05-28 Northrop Grumman Corporation Noise absorption system having active acoustic liner
EP0897176A1 (de) * 1997-08-14 1999-02-17 Thomson Marconi Sonar Sas Unterwasserschallabsorber

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6382603B1 (en) * 2001-02-08 2002-05-07 Lockheed Martin Corporation Ridged elastomer mount
ES2400912T3 (es) * 2004-08-06 2013-04-15 Niels Werner Larsen Método, dispositivo y sistema para modificar el tiempo de reverberación de una sala
US7992678B2 (en) 2005-05-12 2011-08-09 Pilaar James G Inflatable sound attenuation system
JP4782193B2 (ja) * 2005-05-13 2011-09-28 ラルセン、ニールス、ヴェルナー 空間の残響時間を変更する方法、装置、及びシステム
US7819221B1 (en) * 2005-09-27 2010-10-26 The United States Of America As Represented By The Secretary Of The Air Force Lightweight acoustic damping treatment
US8295505B2 (en) * 2006-01-30 2012-10-23 Sony Ericsson Mobile Communications Ab Earphone with controllable leakage of surrounding sound and device therefor
JP2008213547A (ja) * 2007-02-28 2008-09-18 Nissan Motor Co Ltd 騒音制御装置
RU2357109C1 (ru) * 2007-11-07 2009-05-27 Международный Научно-Исследовательский Институт Проблем Управления (Мниипу) Устройство и способ для воздействия на вихревые структуры в турбулентной воздушной струе
US20170040014A1 (en) * 2015-08-07 2017-02-09 Alcatel-Lucent Usa Inc. Acoustic Noise Attenuation Device, Assembly And Metamaterial Structure
CN110106999A (zh) * 2019-03-29 2019-08-09 深圳中天精装股份有限公司 一种装配式建筑吸音木隔墙及其设计方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2482663A1 (fr) * 1980-05-17 1981-11-20 Rolls Royce Revetement d'isolation acoustique a couches multiples
FR2715244A1 (fr) * 1994-01-19 1995-07-21 Bertin & Cie Procédé et dispositif d'absorption de l'énergie d'ondes acoustiques.

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4068736A (en) † 1975-04-14 1978-01-17 Tempmaster Corporation Method and device for reducing noise
DE2834823C2 (de) † 1978-08-09 1980-07-17 Messerschmitt-Boelkow-Blohm Gmbh, 8000 Muenchen Volumenändernde Resonatoren nach dem Tellerfeder-Prinzip
DE3615360A1 (de) † 1986-05-06 1987-11-12 Stankiewicz Alois Dr Gmbh Bauelement mit akustischen eigenschaften
DE4228356C2 (de) † 1992-08-26 1995-10-19 Daimler Benz Aerospace Ag Hohlraumresonator zur Lärmreduzierung
DE9414943U1 (de) † 1994-09-14 1996-01-18 Faist M Gmbh & Co Kg Folienresonanzabsorber
DE9418063U1 (de) † 1994-11-11 1995-01-19 Wilhelmi Werke Gmbh & Co Kg Bauelement zur Schall-Absorption
US5778081A (en) * 1996-03-04 1998-07-07 United Technologies Corp Active noise control using phased-array active resonators
JP3510427B2 (ja) * 1996-08-15 2004-03-29 三菱重工業株式会社 能動吸音壁

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2482663A1 (fr) * 1980-05-17 1981-11-20 Rolls Royce Revetement d'isolation acoustique a couches multiples
FR2715244A1 (fr) * 1994-01-19 1995-07-21 Bertin & Cie Procédé et dispositif d'absorption de l'énergie d'ondes acoustiques.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998022934A1 (en) * 1996-11-15 1998-05-28 Northrop Grumman Corporation Noise absorption system having active acoustic liner
EP0897176A1 (de) * 1997-08-14 1999-02-17 Thomson Marconi Sonar Sas Unterwasserschallabsorber

Also Published As

Publication number Publication date
FR2750527A1 (fr) 1998-01-02
DE69708523T2 (de) 2002-06-13
EP0817164B2 (de) 2004-08-25
DE69708523T3 (de) 2005-06-09
CA2209302A1 (fr) 1997-12-28
EP0817164B1 (de) 2001-11-28
CA2209302C (fr) 2010-12-14
FR2750527B1 (fr) 1998-08-21
DE69708523D1 (de) 2002-01-10
US6332027B1 (en) 2001-12-18

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