WO2006077119A1 - Boite d'amortisseur de bruit - Google Patents

Boite d'amortisseur de bruit Download PDF

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Publication number
WO2006077119A1
WO2006077119A1 PCT/EP2006/000454 EP2006000454W WO2006077119A1 WO 2006077119 A1 WO2006077119 A1 WO 2006077119A1 EP 2006000454 W EP2006000454 W EP 2006000454W WO 2006077119 A1 WO2006077119 A1 WO 2006077119A1
Authority
WO
WIPO (PCT)
Prior art keywords
metal sheets
module
module according
sound
fastened
Prior art date
Application number
PCT/EP2006/000454
Other languages
German (de)
English (en)
Inventor
Helmut V. Fuchs
Norbert Rambausek
Karlheinz Bay
Peter BRANDSTÄTT
Original Assignee
Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
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 Förderung der angewandten Forschung e.V. filed Critical Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
Priority to EP06700875A priority Critical patent/EP1839296A1/fr
Publication of WO2006077119A1 publication Critical patent/WO2006077119A1/fr

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
    • E04B1/86—Sound-absorbing elements slab-shaped
    • 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
    • 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

Definitions

  • the invention relates to a silencer box, which is designed as a hermetically sealed module for soundproofing with completely smooth, a cavity enclosing surface.
  • a silencer box which consists of a honeycomb structure within a frame / a tub, which are closed on one or both sides each with a perforated and a smooth unperforated membrane (Figure 2). At the edge of this built without any damping material membrane absorber in turn occurs the connection of the two membrane elements with the frame of the tub conspicuous in appearance.
  • EP 0750777 describes a film absorber constructed from a plurality of planar layers at a distance from each other.
  • the mounting of the foils and the regular or irregular cassetting to be arranged between the foils and a rigid wall boundary led to a very non-uniform appearance if one wanted to manufacture functional muffler boxes according to this construction manual.
  • cuboid silencer backdrop with sound absorbing filling is known.
  • Such cuboid silencer scenes are to be installed in gas channels or shafts for damping the flow noise. They include a sound-absorbing filling and a skin with which the filling is circumferentially covered and bound on all sides of the box. To the four are attached to the corners of the filling L-shaped corner reinforcement elements present stiffening the filling and the silencer backdrop.
  • the skin may consist of a foil strip or a glue binding.
  • Corner reinforcing elements can be designed as sheet metal angles, whose two legs are each provided with at least one claw element. With the claw element, the sheet metal angles are pressed into the filling with bias.
  • a novel muffler box in which the vibrating plates, membranes or foils do not rest on a frame, tub or otherwise Substructure be attached, but even by appropriate shaping and intermediate damping materials as spacers and the outer Form and at the same time form the soundproof frame.
  • It can be a hermetically sealed module for sound attenuation with completely smooth, a cavity enclosing surface form.
  • two quadrangular metal sheets are present, which in each case in at least two opposite edges bent in the same direction edges, wherein the two metal sheets are arranged enclosing a cavity. At the edges of the metal sheets there is a fastened or fastened connection between the metal sheets.
  • the resulting module is easy to handle and has a defined and limited installation depth.
  • a completed module can be designed visually appealing and thus be used in places where known sound absorbers do not meet the design requirements.
  • At least one further quadrangular metal sheet of the aforementioned kind is present. This holds the module, which has two enclosing a cavity metal sheets, from one side. This forms another cavity.
  • a further embodiment provides that the metal sheets have different basis weights.
  • the basis weights increase inwardly from the outer surface.
  • fastened or fastened connection is only positive. But it is also possible, the fastened or fastened connection is realized by gluing and / or screwing and / or riveting.
  • the cavities forming are at least partially filled with porous and / or fibrous damping material. This results in a constant depth of sound improved sound absorption.
  • Damping material are filled, that vibrations on the cavities enclosing surfaces, evoked by a sound field occurring on the
  • Damping material are transferable, and in the damping material by high internal friction into heat are convertible.
  • FIG 1 Conventionally constructed absorber for technical sound insulation
  • FIG. 1 Membrane absorber according to EP 0213 163 consisting of tub, honeycomb structure and perforated membrane
  • Figure 3 Square inner cable for soundproofing according to DE 43 12 883
  • Figure 4 composite plate resonator according to EP 0 811 097, consisting of vibrating plate, damping material, adhesive compound, rigid 'rear wall
  • Figure 6 View of a silencer box
  • Figure 7 Single-sided staggered constructed silencer box, preferably with porous / fibrous absorber in the interstices 9 to 11 with 12 to 14 increasing basis weight of the metal moldings
  • FIG. 8 Detail drawing of a corner point
  • Figure 9 flow channel with deflection and passive sound-absorbing deflection vanes in combination with the completed module according to the invention for broadband sound attenuation
  • the self-contained, completely hermetically sealed with a completely smooth surface compact absorber module 17 consists in the simplest case of 2, each double folded sheet metal plates 12, enclosing a cavity, so glued to the in Fig. 5, for example, 20 mm wide drawn bends, be screwed or riveted that an externally completely smooth-surfaced scenery, cassette or box is formed (Figure 6), the only at some of their preferably rectangular edges show at most tiny joints that easily by means of sealing material or filler, durable and, z. B. Also in connection with a surface coating all surfaces, virtually invisible can be closed. Alternatively, you can, also in conjunction with a decorative
  • the interior space 9, 10, 11 is filled with a material that participates in the various plate vibrations, but with high internal friction that the vibrations are converted into heat.
  • this damping material must have a certain flexibility, but - in contrast to conventional artificial mineral fibers or soft foams - does not need air movement on thin fibers or in small open pores to act as a damping.
  • the movement received by the plates can take place underneath and against one another due to the friction of layers of the filling material.
  • the inner Helmholtz resonator is omitted, compared to EP 0811097 certain bending waves on the vibrating plate and the attenuation of bent around the edges of the vibrating plate and thus penetrating into the damping material airborne sound waves omitted.
  • the basic module of the new product (FIG. 6) can be broadened and improved in its area of effect by further mass / spring systems of one or more sides on the other mass / spring systems: If successively lighter metal sheets, membranes or Foils set at a variable distance, the appearance remains basically the same. However, since the lower frequency components of the sound field pass the lighter panels almost unhindered and stimulate the heavier panel arranged behind it to resonate and thus absorb, creating an almost arbitrarily broadband effective sound absorber, if only enough (from the sound entry to the basic module of higher to ever lower frequencies, differently tuned) resonators one behind the other under a common cover accommodates, which at the same time the the most highly tuned resonator, which in turn forms everything around the closing envelope.
  • FIG. 9 shows an arrangement in which the silencer modules according to the invention are used in combination with a deflection 15.
  • the deflection 15 the flow coming from the right is deflected downwards.
  • Passive sound-absorbing deflecting vanes 16 are used for this purpose.
  • the inflowing gas first flows past the modules 17, with which an attenuation mainly of the low frequencies takes place.

Landscapes

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

Abstract

L'invention concerne un module (12, 13, 14) hermétiquement fermé pour l'isolation phonique, ce module comportant une surface complètement lisse enfermant une cavité, deux feuilles de tôle quadrangulaires comportant sur au moins deux bords opposés des arêtes repliées dans la même direction. Les deux feuilles de tôle confinent une cavité (9, 10, 11) et leurs bords comportent une liaison fixée entre les feuilles de tôle.
PCT/EP2006/000454 2005-01-20 2006-01-19 Boite d'amortisseur de bruit WO2006077119A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06700875A EP1839296A1 (fr) 2005-01-20 2006-01-19 Boite d'amortisseur de bruit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510002621 DE102005002621B3 (de) 2005-01-20 2005-01-20 Hermetisch abgeschlossenes Modul zur Schalldämpfung
DE102005002621.4 2005-01-20

Publications (1)

Publication Number Publication Date
WO2006077119A1 true WO2006077119A1 (fr) 2006-07-27

Family

ID=36117642

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/000454 WO2006077119A1 (fr) 2005-01-20 2006-01-19 Boite d'amortisseur de bruit

Country Status (3)

Country Link
EP (1) EP1839296A1 (fr)
DE (1) DE102005002621B3 (fr)
WO (1) WO2006077119A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010006090A1 (de) * 2010-01-28 2011-08-18 Mühlbauer AG, 93426 Schalldämmende Maschinenverkleidung
DE102018207940B4 (de) 2018-05-18 2022-12-29 FRENGER SYSTEMEN BV Heiz- & Kühltechnik Gesellschaft mit beschränkter Haftung Strahlflächenaufbau mit Absorptionseinrichtung
DE202019104064U1 (de) * 2019-07-23 2019-08-02 Frenger Systemen BV Heiz- und Kühltechnik GmbH Strahlflächenaufbau mit Absorptionskörper

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3934382A (en) * 1974-02-27 1976-01-27 Gartung Clifford W Modular sound-absorbing screens
DE2513946A1 (de) * 1975-03-29 1976-10-14 Trox Gmbh Geb Kulissenschalldaempfer
US4068736A (en) * 1975-04-14 1978-01-17 Tempmaster Corporation Method and device for reducing noise
US4102095A (en) * 1977-01-17 1978-07-25 Pleion Corporation Modular screen assembly
DE2834267A1 (de) * 1978-08-04 1980-02-28 Colt Int Gmbh Schalldaempfer
WO2003002955A1 (fr) * 2001-06-28 2003-01-09 Kkdk A/S Procede et systeme permettant de modifier un environnement acoustique

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4408782A1 (de) * 1994-03-15 1995-09-21 Fraunhofer Ges Forschung Folien-Schallabsorber
DE19506511C2 (de) * 1995-02-24 1998-08-27 Fraunhofer Ges Forschung Plattenresonator
DE19700767A1 (de) * 1997-01-11 1998-07-23 Solidux Ges Fuer Schallschutz Quaderförmige Schalldämpferkulisse mit schallabsorbierender Füllung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3934382A (en) * 1974-02-27 1976-01-27 Gartung Clifford W Modular sound-absorbing screens
DE2513946A1 (de) * 1975-03-29 1976-10-14 Trox Gmbh Geb Kulissenschalldaempfer
US4068736A (en) * 1975-04-14 1978-01-17 Tempmaster Corporation Method and device for reducing noise
US4102095A (en) * 1977-01-17 1978-07-25 Pleion Corporation Modular screen assembly
DE2834267A1 (de) * 1978-08-04 1980-02-28 Colt Int Gmbh Schalldaempfer
WO2003002955A1 (fr) * 2001-06-28 2003-01-09 Kkdk A/S Procede et systeme permettant de modifier un environnement acoustique

Also Published As

Publication number Publication date
DE102005002621B3 (de) 2006-06-14
EP1839296A1 (fr) 2007-10-03

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