EP0579542B1 - Caisson isolant acoustique - Google Patents

Caisson isolant acoustique Download PDF

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Publication number
EP0579542B1
EP0579542B1 EP93401819A EP93401819A EP0579542B1 EP 0579542 B1 EP0579542 B1 EP 0579542B1 EP 93401819 A EP93401819 A EP 93401819A EP 93401819 A EP93401819 A EP 93401819A EP 0579542 B1 EP0579542 B1 EP 0579542B1
Authority
EP
European Patent Office
Prior art keywords
waveguide
acoustic
glazing
cavity
orifices
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
EP93401819A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0579542A1 (fr
Inventor
Mohamed Ali Hamdi
Hamid 20 Rue Du Fond Pernant Bouhioui
Marc Rehfeld
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.)
Saint Gobain Vitrage SA
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Saint Gobain Vitrage SA
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Filing date
Publication date
Application filed by Saint Gobain Vitrage SA filed Critical Saint Gobain Vitrage SA
Publication of EP0579542A1 publication Critical patent/EP0579542A1/fr
Application granted granted Critical
Publication of EP0579542B1 publication Critical patent/EP0579542B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/67—Units comprising two or more parallel glass or like panes permanently secured together characterised by additional arrangements or devices for heat or sound insulation or for controlled passage of light
    • E06B3/6707—Units comprising two or more parallel glass or like panes permanently secured together characterised by additional arrangements or devices for heat or sound insulation or for controlled passage of light specially adapted for increased acoustical insulation

Definitions

  • the invention relates to the sound insulation of a planar box with multiple walls and more particularly insulating glass.
  • Insulating glass consisting of two or more glass sheets associated together through a spacer frame that keeps them at a certain distance from each other by trapping between them a gas slide, dry air in general, are used in the majority of cases to improve the thermal insulation of premises or even possibly transport vehicles earthly.
  • a difficult-to-use means for glazing intended to equip windows but common in interior partitions or in railway vehicles consists in increasing the thickness of the air space. But it is only for air thicknesses of several centimeters (5 or 6) that the effect is appreciable which prohibits to produce such variants in insulating glazing sealed.
  • the problem which the invention sets for itself is to solve is to provide insulating glass made of glasses usual monolithic but with improved performance, without the manufacturing cost and weight increasing too much.
  • the invention is also given the task - more generally, to provide a simple and inexpensive solution to problem of sound insulation of watertight boxes double or multiple walls filled with gas and / or air.
  • This system since it is tuned on one frequency, acts mainly in a domain around it, but, on the other frequencies, either it acts only little, or even it acts negatively. Furthermore, the volume of the resonator must be a significant fraction of that of the cavity proper - of the order of 15% - which for example for a glazing of 1 m 2 with an air gap of 12 mm thickness requires installing several "bottles" at the periphery of the glazing, the total capacity of which is almost 2 liters: this solution is not suitable for the usual conditions for manufacturing insulating glazing or, in general, for the sound insulation of boxes of comparable thickness.
  • connection resonator-interior of the box is not made by pipes as in the case general of Helmoltz resonators, but by a continuous link.
  • Requirement of patent DE-A-34 01 996 thus proposes a glazing whose glasses have different thicknesses and are mechanically separated from each other.
  • a cavity of very large section was made which allows, taking into account its volume and the characteristics of the continuous slit which connect it inside the glazing, to tune the resonator to improve the insulation at a given frequency.
  • the invention does not use to improve performance acoustics of a box or the principle of resonators Helmoltz located outside the box or that of sound absorption by a suitable material located between the plates, at the periphery of the internal space.
  • the invention provides a method for increasing the acoustic isolation of a box comprising at least one flat cavity made up of two substantially parallel plates assembled at their periphery using a frame interlayer, the cavity being filled with gas and / or air, according to claim 1.
  • the disagreement between acoustic and mechanical waves is evaluated by calculating the energy coupling coefficients between acoustic and mechanical modes and these are these coefficients which are minimized.
  • the waveguide is integrated to the insulating frame of the insulating glass.
  • the realization preferred of the invention comprises a waveguide and a frame spacers which consist of a single profile comprising two compartments in communication by a narrow slot along their entire length, the outer compartment containing the desiccant.
  • the profile constituting the waveguide and the intermediate frame is obtained by folding a sheet thin aluminum.
  • a preferred way of carrying out the invention provides that the communication ports between the waveguide and the cavity each constitute a set whose width is, at least locally, close to that of the waveguide.
  • the orifices are preferably located in the middle of the sides and they're made up of a series of equidistant circles.
  • the principle of the invention is as follows: to increase the sound insulation of a box made of two parallel plates, separated by a small space and connected at their periphery by a frame, thus achieving a cavity, it is proposed to produce on the periphery of the box a section waveguide (A) which communicates with the blade air or gas trapped between the two walls, by through section openings placed at appropriate places.
  • the main role of this waveguide being to detune the acoustic and mechanical waves which arise respectively in the air or gas space and on the walls when the double wall box system is subjected to an incident sound field.
  • the principle of the method therefore consists in seeking the characteristic dimensions of the waveguide so that minimize the energy coupling coefficients.
  • the method is as follows: from a given basic structure, for example insulating glass comprising two separate 4 mm thick glass plates by a 12 mm air gap, we imagine a guide compatible with the characteristics of the structure.
  • insulating glass comprising two separate 4 mm thick glass plates by a 12 mm air gap
  • the calculation dictates the elements A, s and the position of the openings which, a priori, will give the best results while remaining compatible with the final product.
  • the result of this modeling of the materialized box by the curve of the sound reduction index depending on the frequency allows to judge the effect provided by the selected waveguide.
  • the calculation allows to modify iteratively one, two, or three of the parameters A, s and position of the openings which define the guide so as to improve the weakening index, the experience allows to check the validity of the result acoustics of the new box - waveguide assembly.
  • double glazing 4 (12) 4 made of two float glass plates 4 mm thick separated by a 12 mm air gap and assembled with an aluminum frame filled with a desiccant (molecular sieve) and bonded using butyl and polysulfide.
  • the glazing dimensions were 1.23 x 1.48 m 2 .
  • FIG. 1 we see the glazing 1 with its glasses 2 and its peripheral profile 3,
  • the waveguide is shown at 6 in FIGS. 1 and 2. It is materialized by four walls: the internal surfaces 7 and 8 of the glasses, the internal wall 9 of the intermediate frame and for the fourth wall, we used the outer face 10 of a profile 11 identical to the profile of the frame. This profile is glued between the two glasses like the profile of the frame. It is cut into sections of length such that they leave between them the connection orifices defined above, that is to say with an area of 54 mm 2 for the orifice 12 of the corners and 480 mm 2 for those 13 from the middle of the sides. The profiles are empty but their ends are blocked.
  • the glazing of the second example was carried out in the conditions for industrial mass production.
  • a profile was produced by folding aluminum strip, intended to constitute the interlayer of insulating glazing.
  • This profile has a double role, on the one hand it must play the usual role of an insulating glazing frame and on the other hand, it also incorporates the waveguide of the invention.
  • the section of the profile is shown in Figure 4. We see at 16 the compartment reserved for desiccant and fixing the corners at the four corners of the glazing. In 17, the waveguide was formed. We have chosen here a section of 150 mm 2 .
  • the glazing prototype was produced with 4 mm glass in the same dimensions as before: 1.23 x 1.48 m 2 .
  • the energy coupling coefficients between the acoustic and mechanical modes were calculated and then, by calculation, we examined how the choice of the position, the shape and the section of the openings in the streamlined managed to minimize these coefficients.
  • the position retained for the openings was in the middle of the four sides of the glazing, the corners being assembled at a bevel at 18, FIG. 3 without being waterproof.
  • the shape of the orifices has been determined by a series of circles 19 almost tangent to each other. It is important that their diameter is close to the thickness of the profile. Another important criterion is the total length occupied by all of the circles 19 in the middle of the sides of the glazing. This must be at least 2% and at most 25% of the side length. Optimization provided as a number of juxtaposed circular openings, the number 4 for both the side of 1.23 m in length and that of 1.48 m.
  • the profile shown in Figure 4 has a special feature interesting: we designed it with a communication orifice between the two rooms.
  • the partition wall 20 does not come into contact with the perpendicular wall 21 put leaves a space 22 of, for example, 0.2 mm free.
  • This passage allows the desiccant (not shown) filling the compartment 16 to act through the compartment 17 and openings 19 on the internal space 23 of the glazing insulation which it always keeps dry.
  • the tests were carried out according to ISO 140 in two reverberant chambers of respective volumes 62 and 86 m 3 .
  • FIG. 5 The results are shown in FIG. 5.
  • the frequencies (in kHz) are seen on the abscissa and the acoustic attenuation indices are shown on the ordinate.
  • Curve 14 represents the results of traditional insulating glazing 4 (12) 4 filled with air while curve 15 shows those of glazing of the same dimensions, still in 4 (12) 4, but with the waveguide peripheral of FIGS. 3 and 4. It can be seen that between 200 Hz and 2500 Hz, the glazing of the invention is greater by a value between 2 and 5 dB than an ordinary glazing.
  • the general shape of the curve shows that the effect does not manifest itself at a localized frequency as is the case with Helmholtz resonators but over a wide band of the audible spectrum.
  • the waveguide produces its effect perfectly by coming disrupt the coupling that the air gap usually performs between the first and the second plate.
  • the function of the guide is to allow the sound wave to circulate, this is why it is important that the number of communication holes between the cavity and the guide do is not too important which would hinder this free movement.
  • Examples 1 and 2 of making the boxes of the invention use transparent glass plates but, of course, the acoustic results are not not dependent on the nature of this material. Plates of sheet metal or any other material with a module of similar elasticity would have led to results comparable.
  • the invention proposes an unexpected solution and far removed not only from systems that act on the plates themselves (thicknesses, laminated sets, special resins) but even of those which act on the cavity (resonators Helmholtz or peripheral absorbents). Compared to these other treatments it has the advantage of being cheap, easy to use in industry and aesthetically discreet.

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Building Environments (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Connection Or Junction Boxes (AREA)
  • Load-Bearing And Curtain Walls (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Refrigerator Housings (AREA)
  • Casings For Electric Apparatus (AREA)
  • Toys (AREA)
  • Stringed Musical Instruments (AREA)
  • Electromechanical Clocks (AREA)
EP93401819A 1992-07-16 1993-07-15 Caisson isolant acoustique Expired - Lifetime EP0579542B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR929208772A FR2693754B1 (fr) 1992-07-16 1992-07-16 Caisson isolant acoustique.
FR9208772 1992-07-16

Publications (2)

Publication Number Publication Date
EP0579542A1 EP0579542A1 (fr) 1994-01-19
EP0579542B1 true EP0579542B1 (fr) 1999-11-17

Family

ID=9431938

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93401819A Expired - Lifetime EP0579542B1 (fr) 1992-07-16 1993-07-15 Caisson isolant acoustique

Country Status (11)

Country Link
US (1) US5598669A (ja)
EP (1) EP0579542B1 (ja)
JP (1) JP3270580B2 (ja)
AT (1) ATE186762T1 (ja)
CA (1) CA2100615C (ja)
DE (1) DE69327020T2 (ja)
DK (1) DK0579542T3 (ja)
ES (1) ES2141141T3 (ja)
FI (1) FI933218A (ja)
FR (1) FR2693754B1 (ja)
NO (1) NO309347B1 (ja)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69405881T2 (de) * 1994-02-11 1998-03-19 Autostrade Concess Const Schalldämpfender strassenbelag und verfahren zu dessen herstellung
GB2313871A (en) * 1996-06-07 1997-12-10 British Aerospace Aircraft window noise attenuation
FR2794792B1 (fr) * 1999-06-08 2001-08-31 Saint Gobain Vitrage Vitrage isolant acoustique a guide d'onde cloisonne
DK199901146A (da) * 1999-08-20 2001-04-10 Vkr Holding As Isolationsrude
FR2808474B3 (fr) * 2000-05-03 2002-05-31 Saint Gobain Vitrage Vitrage feuillete a proprietes de resistance mecanique et d'isolation acoustique
JP4736278B2 (ja) * 2001-08-29 2011-07-27 旭硝子株式会社 複層ガラス
DE202004000659U1 (de) * 2004-01-17 2004-04-15 Heinrich Gillet Gmbh Schalldämpfer für Kraftfahrzeuge mit Verbrennungsmotor
US20070039258A1 (en) * 2005-08-19 2007-02-22 Walker John R Iii Adjustable attachment system
US20080029336A1 (en) * 2006-06-10 2008-02-07 Patrick Sigler Acoustic panel
US7987644B2 (en) 2006-09-15 2011-08-02 Enclos Corporation Curtainwall system
US8136630B2 (en) * 2007-06-11 2012-03-20 Bonnie Schnitta Architectural acoustic device
US8006442B2 (en) * 2007-07-02 2011-08-30 The Hong Kong Polytechnic University Double-glazed windows with inherent noise attenuation
US8006802B2 (en) * 2008-09-02 2011-08-30 Yamaha Corporation Acoustic structure and acoustic room
JP5691197B2 (ja) * 2009-03-06 2015-04-01 ヤマハ株式会社 音響構造体、プログラムおよび設計装置
JP6382141B2 (ja) * 2015-03-26 2018-08-29 日本板硝子株式会社 複層ガラス
EP3192959A1 (en) * 2016-01-12 2017-07-19 AGC Glass Europe Method to produce insulating glass units and insulating glass units
EP3192960A1 (en) * 2016-01-12 2017-07-19 AGC Glass Europe Insulating glass unit and methods to produce it
US9850657B2 (en) * 2016-02-25 2017-12-26 Steelcase Inc. Acoustic panel for partition wall assembly
FR3122689B1 (fr) * 2021-05-07 2024-01-19 Saint Gobain Dispositifs perforés et vitrages les comprenant

Family Cites Families (21)

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US621542A (en) * 1899-03-21 sheppard
US2597097A (en) * 1943-01-11 1952-05-20 Libbey Owens Ford Glass Co Multiple glazing unit
DE1509275A1 (de) * 1963-02-12 1969-01-23 Eberspaecher J Mehrscheibenverglasung
DE1659661C3 (de) * 1965-05-11 1974-06-06 Deutsche Tafelglas Ag Detag, 8510 Fuerth Doppelglasscheibe mit Metall-Randprofil und Randdämpfung
DE2034998C3 (de) * 1970-07-15 1974-01-17 Deutsche Tafelglas Ag Detag, 8510 Fuerth Unter Verwendung von Verbundglasscheiben hergestellte schalldämmende Doppelglasscheibe aus zwei am Rande durch ein abdichtendes Profil miteinander verbundenen Scheiben
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DE2748223C2 (de) * 1977-10-27 1982-12-09 DCL Glass Consult GmbH, 8000 München Isolierglaseinheit mit mindestens zwei parallelen Glasscheiben, bei der längs der Innenfläche des Dicht- und Verbindungsorgans wenigstens ein Hohlprofilteil angeordnet ist, dessen Querschnitt einen inneren, Schalldämmaterial enthaltenden Hohlraum bildet, der mit dem die Gasfüllung enthaltenden Innenraum zwischen den Glasscheiben in Verbindung steht
DE2803740C3 (de) * 1978-01-28 1982-10-28 Friedrich Holve, Profilzieherei und Metallwarenfabrik, KG, 8570 Hemer Mehrscheiben-Isolierglas
GB2077834B (en) * 1980-06-17 1984-06-06 Leith Glazing Co Ltd A multiple pane assembly
CA1165627A (en) * 1980-10-23 1984-04-17 Hans W. Petersen Spacer bar
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Also Published As

Publication number Publication date
CA2100615C (fr) 2005-06-21
DE69327020T2 (de) 2000-07-13
FI933218A (fi) 1994-01-17
CA2100615A1 (fr) 1994-01-17
ATE186762T1 (de) 1999-12-15
DK0579542T3 (da) 2000-05-15
EP0579542A1 (fr) 1994-01-19
FR2693754A1 (fr) 1994-01-21
FI933218A0 (fi) 1993-07-15
DE69327020D1 (de) 1999-12-23
US5598669A (en) 1997-02-04
NO932501L (no) 1994-01-17
JPH06167983A (ja) 1994-06-14
JP3270580B2 (ja) 2002-04-02
NO932501D0 (no) 1993-07-08
FR2693754B1 (fr) 1994-09-02
NO309347B1 (no) 2001-01-15
ES2141141T3 (es) 2000-03-16

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