EP0680031A3 - Acoustic damping element - Google Patents

Acoustic damping element Download PDF

Info

Publication number
EP0680031A3
EP0680031A3 EP94117818A EP94117818A EP0680031A3 EP 0680031 A3 EP0680031 A3 EP 0680031A3 EP 94117818 A EP94117818 A EP 94117818A EP 94117818 A EP94117818 A EP 94117818A EP 0680031 A3 EP0680031 A3 EP 0680031A3
Authority
EP
European Patent Office
Prior art keywords
molded part
resonators
sound source
perforated plate
damping element
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
EP94117818A
Other languages
German (de)
French (fr)
Other versions
EP0680031A2 (en
EP0680031B1 (en
Inventor
Reinhard Stief
Gerhard Dr. Müller-Broll
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.)
Carl Freudenberg KG
Original Assignee
Carl Freudenberg KG
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 Carl Freudenberg KG filed Critical Carl Freudenberg KG
Publication of EP0680031A2 publication Critical patent/EP0680031A2/en
Publication of EP0680031A3 publication Critical patent/EP0680031A3/en
Application granted granted Critical
Publication of EP0680031B1 publication Critical patent/EP0680031B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Duct Arrangements (AREA)
  • Building Environments (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Exhaust Silencers (AREA)

Abstract

Luftschalldämpfer, umfassend ein plattenförmiges Formteil (1) aus polymerem Werkstoff mit zumindest zwei Kammern (2, 3), die als Resonatoren (4, 5) mit voneinander abweichenden Resonanzfrequenzen ausgebildet sind, wobei die Resonatoren (4, 5) das gesamte Formteil (1) im wesentlichen flächig überdecken. Das Formteil (1) besteht aus einem geschlossenzelligen Werkstoff. Die Resonatoren (4, 5) sind durch im wesentlichen topfförmige, in Richtung der Schallquelle (6) offene Vorwölbungen (7) gebildet, wobei das Formteil (1) auf der der Schallquelle (6) zugewandten Seite von einer Lochplatte (8) überdeckt ist, die im Bereich einer jeden Kammer (2, 3) mit zumindest zwei Durchbrechungen (9, 10) versehen ist. Das Formteil (1) und die Lochplatte (8) sind trennbar miteinander verbunden. Air silencer, comprising a plate-shaped molded part (1) made of polymeric material with at least two chambers (2, 3) which are designed as resonators (4, 5) with mutually different resonance frequencies, the resonators (4, 5) covering the entire molded part (1 ) cover essentially flat. The molded part (1) consists of a closed-cell material. The resonators (4, 5) are formed by essentially cup-shaped protrusions (7) which are open in the direction of the sound source (6), the molded part (1) being covered by a perforated plate (8) on the side facing the sound source (6) which is provided in the area of each chamber (2, 3) with at least two openings (9, 10). The molded part (1) and the perforated plate (8) are separably connected to one another.

EP94117818A 1994-04-27 1994-11-11 Acoustic damping element Expired - Lifetime EP0680031B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4414566A DE4414566C2 (en) 1994-04-27 1994-04-27 Air silencer
DE4414566 1994-04-27

Publications (3)

Publication Number Publication Date
EP0680031A2 EP0680031A2 (en) 1995-11-02
EP0680031A3 true EP0680031A3 (en) 1995-11-15
EP0680031B1 EP0680031B1 (en) 1999-06-16

Family

ID=6516487

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94117818A Expired - Lifetime EP0680031B1 (en) 1994-04-27 1994-11-11 Acoustic damping element

Country Status (4)

Country Link
US (1) US5587564A (en)
EP (1) EP0680031B1 (en)
JP (1) JP2986711B2 (en)
DE (1) DE4414566C2 (en)

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JP2848587B2 (en) * 1995-10-23 1999-01-20 株式会社神戸製鋼所 Sound-absorbing damping material
GB9522724D0 (en) * 1995-11-06 1996-01-10 Acts Ltd A noise attenuator for an induction system or an exhaust system
DE19620375A1 (en) * 1996-05-21 1997-11-27 Polymer Chemie Gmbh Sound absorbing and damping component
TW345603B (en) * 1996-05-29 1998-11-21 Gmundner Fertigteile Gmbh A noise control device for tracks
US6015026A (en) * 1997-06-06 2000-01-18 Owens-Corning Fiberglas Technology, Inc. Acoustical diffuser assembly and method of installation
DE19804567C2 (en) * 1998-02-05 2003-12-11 Woco Franz Josef Wolf & Co Gmbh Surface absorber for sound waves and use
DE29803675U1 (en) * 1998-03-03 1999-07-15 M. Faist GmbH & Co KG, 86381 Krumbach Soundproofing shield
JP2000330571A (en) * 1999-05-21 2000-11-30 Nok Vibracoustic Kk Sound absorbing structure
JP2001282249A (en) * 2000-03-30 2001-10-12 Nok Vibracoustic Kk Sound absorbing material
JP2002029330A (en) * 2000-07-18 2002-01-29 Nok Vibracoustic Kk Sound absorption structure
US7395898B2 (en) * 2004-03-05 2008-07-08 Rsm Technologies Limited Sound attenuating structures
EP1607544B1 (en) * 2004-06-17 2009-04-15 Heimbach GmbH & Co. KG Sound damping arrangement for a wall, ceiling or floor covering
KR100571539B1 (en) * 2004-06-30 2006-04-24 김배영 Sound absorption block and method of constructing it
CN101175887B (en) * 2006-04-27 2011-04-13 铃木政夫 Acoustical shield device
US7520370B2 (en) * 2006-05-17 2009-04-21 William Orlin Gudim Combination acoustic diffuser and absorber and method of production thereof
JP5326472B2 (en) * 2007-10-11 2013-10-30 ヤマハ株式会社 Sound absorption structure
EP2085962A2 (en) * 2008-02-01 2009-08-05 Yamaha Corporation Sound absorbing structure and vehicle component having sound absorbing properties
US20090223738A1 (en) * 2008-02-22 2009-09-10 Yamaha Corporation Sound absorbing structure and vehicle component having sound absorption property
JP5194972B2 (en) * 2008-04-09 2013-05-08 トヨタ紡織株式会社 Soundproof material
JP5245641B2 (en) * 2008-08-20 2013-07-24 ヤマハ株式会社 Sound absorbing structure
DE102009034463A1 (en) 2009-07-22 2011-02-03 Filtro Klimatechnik Gmbh Airborne sound absorbing device, particularly for use in air conditioning units, comprises sound absorbing bodies arranged in air flow channel or housing, where cover is designed at end of front side of sound absorbing body
US8424637B2 (en) * 2010-01-08 2013-04-23 Richard L. Lenz, Jr. Systems and methods for providing an asymmetric cellular acoustic diffuser
ITRA20100013A1 (en) * 2010-05-04 2011-11-05 Simone Meneghel "FRANGI-ONDA SOUND INSULATION PANEL"
EP2691947A2 (en) * 2011-03-29 2014-02-05 Katholieke Universiteit Leuven Vibro-acoustic attenuation or reduced energy transmission
CN107103898A (en) 2011-10-06 2017-08-29 Hrl实验室有限责任公司 High bandwidth anti-resonance vibration film
WO2013098384A1 (en) * 2011-12-31 2013-07-04 Saint-Gobain Performance Plastics Chaineux Optimized pattern of a damping layer for wall, floor, and ceiling constructions
US8474574B1 (en) * 2012-02-29 2013-07-02 Inoac Corporation Sound absorbing structure
US11021870B1 (en) * 2013-03-14 2021-06-01 Hrl Laboratories, Llc Sound blocking enclosures with antiresonant membranes
WO2014185271A1 (en) * 2013-05-16 2014-11-20 株式会社トヨックス Radiation element and heat conduction member
US8857563B1 (en) 2013-07-29 2014-10-14 The Boeing Company Hybrid acoustic barrier and absorber
US8869933B1 (en) * 2013-07-29 2014-10-28 The Boeing Company Acoustic barrier support structure
WO2016026424A1 (en) * 2014-08-20 2016-02-25 The Hong Kong University Of Science And Technology Vibration damped sound shield
GB201415874D0 (en) * 2014-09-08 2014-10-22 Sonobex Ltd Acoustic Attenuator
TWI625446B (en) * 2015-06-18 2018-06-01 德克薩斯大學體系董事會 Resonator, resonator array for damping acoustic energy from source in liquid and noise abatement system
US9630575B2 (en) * 2015-09-30 2017-04-25 GM Global Technology Operations LLC Panel assembly with noise attenuation system
WO2018101164A1 (en) * 2016-11-29 2018-06-07 富士フイルム株式会社 Soundproofing structure
JP6636471B2 (en) 2017-02-16 2020-01-29 株式会社ニフコ Sound absorber and sound absorbing structure
US10741159B2 (en) 2017-09-10 2020-08-11 Douglas Peter Magyari Acoustic-absorber system and method
JP2019194743A (en) * 2019-08-19 2019-11-07 株式会社リコー Electrical apparatus
DE102019128209B4 (en) * 2019-10-18 2023-02-02 Daniel Mohr Sound-absorbing device with knobbed foil composite and use
US11812221B2 (en) 2020-01-21 2023-11-07 Adbm Corp. System and method for simultaneously attenuating high-frequency sounds and amplifying low-frequency sounds produced by underwater acoustic pressure source

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2904125A (en) * 1953-05-08 1959-09-15 Emhart Mfg Co Straight through silencer
EP0246464A1 (en) * 1986-05-14 1987-11-25 Pape, Hans Sound-absorbing layer for a wall or covering
EP0317380A1 (en) * 1987-10-27 1989-05-24 Thomson-Csf Lining with low sound reflectivity
EP0454949A2 (en) * 1990-04-11 1991-11-06 Firma Carl Freudenberg Air-conducted sound absorbing element

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US2124463A (en) * 1935-11-16 1938-07-19 Woodall Industries Inc Sound insulation
US2887173A (en) * 1957-05-22 1959-05-19 G A Societa Per Azioni Sa Sound absorbing and insulating panel
US3269484A (en) * 1963-09-24 1966-08-30 Lighter Stephen Acoustic absorbing structure
DE2632290C3 (en) * 1976-07-17 1980-02-14 Messerschmitt-Boelkow-Blohm Gmbh, 8000 Muenchen Sound reduction through resonating resonators
DE2921050A1 (en) * 1979-05-23 1980-11-27 Fraunhofer Ges Forschung SOUND ABSORBING COMPONENT MADE OF PLASTIC FILM
US4242398A (en) * 1979-01-16 1980-12-30 Teijin Limited Fibrous shaped article having non-level surface
WO1984002998A1 (en) * 1983-01-20 1984-08-02 Irbit Holding Ag Acoustic absorption for alveolar material
CH671848B (en) * 1986-05-16 1989-09-29
US4821841A (en) * 1987-06-16 1989-04-18 Bruce Woodward Sound absorbing structures
DE8803634U1 (en) * 1988-03-17 1988-04-28 Gebrüder Trox, Gesellschaft mit beschränkter Haftung, 4133 Neukirchen-Vluyn Silencers for flowing gases in ventilation and air conditioning systems
CH678201A5 (en) * 1989-03-17 1991-08-15 Lignoform Formsperrholz Ag

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2904125A (en) * 1953-05-08 1959-09-15 Emhart Mfg Co Straight through silencer
EP0246464A1 (en) * 1986-05-14 1987-11-25 Pape, Hans Sound-absorbing layer for a wall or covering
EP0317380A1 (en) * 1987-10-27 1989-05-24 Thomson-Csf Lining with low sound reflectivity
EP0454949A2 (en) * 1990-04-11 1991-11-06 Firma Carl Freudenberg Air-conducted sound absorbing element

Also Published As

Publication number Publication date
DE4414566A1 (en) 1995-11-02
JPH0844370A (en) 1996-02-16
EP0680031A2 (en) 1995-11-02
EP0680031B1 (en) 1999-06-16
JP2986711B2 (en) 1999-12-06
DE4414566C2 (en) 1997-11-20
US5587564A (en) 1996-12-24

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