EP0742322B1 - Schalldämpfungsvorrichtung - Google Patents

Schalldämpfungsvorrichtung Download PDF

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Publication number
EP0742322B1
EP0742322B1 EP96105780A EP96105780A EP0742322B1 EP 0742322 B1 EP0742322 B1 EP 0742322B1 EP 96105780 A EP96105780 A EP 96105780A EP 96105780 A EP96105780 A EP 96105780A EP 0742322 B1 EP0742322 B1 EP 0742322B1
Authority
EP
European Patent Office
Prior art keywords
sound
set forth
absorber
attenuator
sound attenuator
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
EP96105780A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0742322A1 (de
Inventor
Wolfgang Friedl
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.)
Metzeler Schaum GmbH
Original Assignee
Metzeler Schaum GmbH
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 Metzeler Schaum GmbH filed Critical Metzeler Schaum GmbH
Publication of EP0742322A1 publication Critical patent/EP0742322A1/de
Application granted granted Critical
Publication of EP0742322B1 publication Critical patent/EP0742322B1/de
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
    • E04B1/8409—Sound-absorbing elements sheet-shaped
    • 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
    • E04B1/99—Room acoustics, i.e. forms of, or arrangements in, rooms for influencing or directing sound
    • 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
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8461—Solid slabs or blocks layered
    • 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

Definitions

  • the invention relates to a sound damping device, in particular for attachment to space-limiting surfaces, with a first damping element for low sound frequencies and a second damping element for high sound frequencies, the first damping element comprises a plate absorber and a spacer and that Spacer for the spaced arrangement of the plate absorber to a space-limiting area is arranged on one side of the plate absorber, the second Damping element a porous arranged on the other side of the plate absorber Has absorber and wherein the spacer and the porous Absorbers consist of a synthetic foam.
  • wind tunnel systems are also sound attenuation devices for attachment to space-limiting surfaces such as walls and ceilings known.
  • Flat-shaped sound damping devices are also known, which are also attached to the walls and ceilings of acoustic rooms become.
  • Such flat silencers include basically a porous absorber and a Helmholtz resonator.
  • US-A 2,169,370 is a flat sound absorbing Article discloses a first damping element for low sound frequencies and a second damping element for high sound frequencies includes.
  • the first damping element is a spacer spaced from a surface on which the sound absorbing Article is attached, arranged. Thus, between the damping elements and created a cavity in the surface.
  • the first Damping element is a membrane, while the second damping element consists of porous material.
  • FR-A 1,352,581 also describes a soundproofing article, in which two damping elements are provided. These damping elements are attached to a wall using a spacer. Due to this construction, the spacer through the damping element and the wall enclosed a cavity.
  • FR.A.1352581 represents a sound attenuation device which has the features of the preamble of claim 1.
  • the invention is the Task based on a sound absorption device of the aforementioned Kind in such a way, so that this little in depth Space consumed and sound-absorbing over a wide-walled frequency range works. In addition, it should be simple and inexpensive be producible.
  • a sound damping device especially for attachment to space-limiting Proposed areas where the plastic foam of the spacer and the porous absorber is an open-cell synthetic foam is and that a sheath laterally surrounding the spacer is provided.
  • Sound damping devices become space-consuming wedge structures avoided.
  • the sound attenuation device according to the invention is constructed particularly simply from two damping elements, wherein the first damping element for absorption below 500 Hz lying sound frequencies. That on the first damping element arranged second damping element dampens overlying Sound frequencies due to friction and other energy losses.
  • the invention Acoustic device is characterized by a compact design and especially with a smooth surface out. Space losses are kept low. When using in wind tunnel systems are due to the inventive design the flow losses previously caused by the wedge structures decreased.
  • the spacer element frame-shaped and the arranged on the spacer Panel absorber encloses with the wall or ceiling surface Cavity.
  • the design of the sound attenuation device with a cavity lying towards the space-limiting surface particularly good attenuation of low sound frequencies.
  • the plate absorber made of a flexible material. This will reduce noise in the low frequency range further improved.
  • the plate absorber is a closed plastic film, especially a film made of polyurethane.
  • the thickness is of the plate absorber between 20 ⁇ m and 200 ⁇ m.
  • the spacer element made of an open-cell synthetic foam, e.g. Polyurethane or melamine resin foam.
  • the thickness of the spacer element is about 100 mm.
  • An advantageous embodiment of the invention provides that the side cover is made of sheet metal.
  • porous absorber made of an open-cell synthetic foam, such as polyurethane or melamine resin foam.
  • a perforated film intended.
  • Such a film provides the absorption characteristics the sound attenuation device for high frequencies is not impaired.
  • a perforated area portion of the perforated film is from 20 to 80% advantageous.
  • the porous absorber is in the essentially cuboid and has a thickness of about 130 mm on.
  • Figure 1 shows a sound damping device 1, which on a space-limiting Surface 6 (wall or ceiling) is attached.
  • the silencing device 1 comprises two damping elements.
  • the first damping element for low sound frequencies has one frame-shaped spacer 2 and one on the spacer 2 arranged plate absorber 3.
  • the spacer element 2 is on the space-limiting surface 6, for example by gluing appropriate.
  • the spacer 2 consists of a Foam, in particular an open-cell foam, such as Polyurethane or melamine resin foam.
  • the plate absorber 3 consists of a flexible material, advantageously from a plastic film.
  • the spacer element 2 can, as shown in the figure, laterally from be surrounded by a sheath 7.
  • a sheath 7 for example a thin metal or sheet metal strip or the like can, the absorption quality of the first damping element further improved, and there is a differentiation from adjacent other soundproofing devices.
  • the second damping element of the sound damping device according to the invention 1 is directly on the plate absorber 3, for example by gluing, attached and essentially comprises one porous absorber 4 made of foam, in particular from an open cell Plastic foam such as polyurethane or melamine resin foam.
  • the porous surface can face the sound Absorber 4, as shown, a film 8 provided with holes 9 exhibit.
  • the perforated surface portion of this perforated film 8 is 20 up to 80%. A proportion of perforated area has been found to be particularly advantageous proven from 30 to 50%.
  • the thickness of the spacer element 2 is approximately 100 mm, that of the porous Absorbers 4 about 130 mm. Since the serving as plate absorber 3 Plastic film a maximum of only 200 ⁇ m, advantageously only 50 ⁇ m thick, the entire soundproofing device has a thickness of only about 230 mm. So compared to the others usual about 1 m long substructures a significant gain in space connected so that the acoustic rooms to be damped by equipment with sound attenuation devices according to the invention offer more space, or be built smaller from the outset can. An application of the sound attenuation device according to the invention in wind tunnel systems is a good option because surface running parallel to the space-limiting surface Flow losses are kept low.
  • the sound damping device dampens sound in a broadband frequency range in accordance with the results of a measurement series shown below.
  • the degree of sound absorption was determined in accordance with DIN 52212.
  • the thickness of the porous absorber 4 made of Basotect was 130 mm
  • the thickness of the plate absorber 3 was 50 ⁇ m
  • the thickness of the enclosed cavity 5 was 100 mm.
  • the test area was 9.8 m 2
  • the measured reverberation room had a volume of 210 m 3 .
  • the sound absorption coefficient ⁇ s was measured over the frequency f in Hz.
  • the degree of sound absorption ⁇ s is consistently greater than 1 over a wide frequency range from 200 Hz to 5000 Hz. Only below approximately 180 Hz does the degree of sound absorption fall below 1.

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Building Environments (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
EP96105780A 1995-05-08 1996-04-11 Schalldämpfungsvorrichtung Expired - Lifetime EP0742322B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19516819 1995-05-08
DE19516819A DE19516819C2 (de) 1995-05-08 1995-05-08 Schalldämpfungsvorrichtung

Publications (2)

Publication Number Publication Date
EP0742322A1 EP0742322A1 (de) 1996-11-13
EP0742322B1 true EP0742322B1 (de) 1999-06-16

Family

ID=7761346

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96105780A Expired - Lifetime EP0742322B1 (de) 1995-05-08 1996-04-11 Schalldämpfungsvorrichtung

Country Status (10)

Country Link
EP (1) EP0742322B1 (ja)
JP (1) JP3046242B2 (ja)
KR (1) KR100229250B1 (ja)
CN (1) CN1075150C (ja)
CZ (1) CZ125896A3 (ja)
DE (2) DE19516819C2 (ja)
ES (1) ES2135132T3 (ja)
MY (1) MY112640A (ja)
SK (1) SK57596A3 (ja)
TW (1) TW315396B (ja)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10151474B4 (de) * 2000-10-18 2006-07-13 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Schallabsorber mit streifenförmiger schalldichter Abdeckung
DE10118187C2 (de) * 2001-04-11 2003-03-27 Siemens Ag Einrichtung zum Gestalten der Akustik eines Raumes
DE102004025352A1 (de) * 2004-05-19 2005-12-22 Schako Klima Luft Ferdinand Schad Kg Zweigniederlassung Kolbingen Wand
JP3580810B1 (ja) * 2004-05-27 2004-10-27 川崎重工業株式会社 超低周波音用吸音装置
WO2008055825A1 (de) * 2006-11-07 2008-05-15 Basf Se Verfahren zum schützen von brennbaren substraten und zur herstellung von verbundschichtmaterialien mit offenzelligen aminoplastharzschaumstoffen
EP2333181B1 (de) * 2009-12-04 2013-03-20 Phoneon GmbH Akustische Komponente zum Beeinflussen von Schall in einem Raum
DE102014207852A1 (de) 2013-04-26 2014-10-30 Holzwerke Ladenburger GmbH & Co. KG Akustikabsorber-Bauelement
CN104538018A (zh) * 2014-12-25 2015-04-22 东南大学 封闭空腔有源结构声控制方法
JP7373360B2 (ja) * 2019-10-31 2023-11-02 日本音響エンジニアリング株式会社 音響調整構造体
WO2022222984A1 (en) * 2021-04-23 2022-10-27 The Hong Kong University Of Science And Technology Ultra-low frequency acoustic absorber

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2169370A (en) * 1936-12-19 1939-08-15 Johns Manville Sound-absorbing article
FR1352581A (fr) * 1963-04-03 1964-02-14 Dalle d'insonorisation en des matières synthétiques à l'état de mousse, et procédé de fabrication de cette dalle
DE1195066B (de) * 1962-07-06 1965-06-16 Hans Helmut Pfaffenholz Dipl I Elastisches Element
DE2408028B2 (de) * 1974-02-20 1978-05-11 Fa. Carl Freudenberg, 6940 Weinheim Schallschluckplatte
CH683855A5 (de) * 1991-07-24 1994-05-31 Zdzislaw Pregowski Schallabsorptionsplatte.
WO1994024382A1 (de) * 1993-04-20 1994-10-27 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Unterdecke

Also Published As

Publication number Publication date
CN1075150C (zh) 2001-11-21
KR100229250B1 (ko) 1999-11-01
KR960042518A (ko) 1996-12-21
SK57596A3 (en) 1996-12-04
DE19516819A1 (de) 1996-11-14
EP0742322A1 (de) 1996-11-13
CN1143143A (zh) 1997-02-19
DE19516819C2 (de) 1999-05-27
JPH09111906A (ja) 1997-04-28
MY112640A (en) 2001-07-31
TW315396B (ja) 1997-09-11
ES2135132T3 (es) 1999-10-16
JP3046242B2 (ja) 2000-05-29
DE59602222D1 (de) 1999-07-22
CZ125896A3 (en) 1996-11-13

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