CA2040076A1 - Sound absorbing panel - Google Patents

Sound absorbing panel

Info

Publication number
CA2040076A1
CA2040076A1 CA2040076A CA2040076A CA2040076A1 CA 2040076 A1 CA2040076 A1 CA 2040076A1 CA 2040076 A CA2040076 A CA 2040076A CA 2040076 A CA2040076 A CA 2040076A CA 2040076 A1 CA2040076 A1 CA 2040076A1
Authority
CA
Canada
Prior art keywords
resonators
helmholtz
sound absorbing
absorbing panel
different
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
CA2040076A
Other languages
French (fr)
Other versions
CA2040076C (en
Inventor
Michael Hiller
Reinhard Stief
Tarik Pamir Akyol
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
Individual
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 Individual filed Critical Individual
Publication of CA2040076A1 publication Critical patent/CA2040076A1/en
Application granted granted Critical
Publication of CA2040076C publication Critical patent/CA2040076C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0001—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular acoustical properties
    • B29K2995/0002—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular acoustical properties insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Building Environments (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

A sound absorbing panel includes Helmholtz-resonators of different resonance frequencies on a surface which is adapted to face a sound source. All Helmholtz-resonators located within the sphere of activity of a Helmholtz-resonator of a relatively lower resonance frequency have resonance frequencies which are mutually different and different from that of the lower frequency resonator. The Helmholtz-resonators cover the whole area of the panel. The walls of the resonators as well as the whole of the surface which supports the resonators is constructed as an absorber sheet. The openings of the resonators are kept uncovered. The resonators and the absorber sheet are made of the same material. The sound absorbing panel may be easily manufactured, provides an improved sound absorption and has small overall dimensions.
CA002040076A 1990-04-11 1991-04-09 Sound absorbing panel Expired - Fee Related CA2040076C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4011705.7 1990-04-11
DE4011705A DE4011705A1 (en) 1990-04-11 1990-04-11 AIR SOUND ABSORBING MOLDED PART

Publications (2)

Publication Number Publication Date
CA2040076A1 true CA2040076A1 (en) 1991-10-12
CA2040076C CA2040076C (en) 1995-11-14

Family

ID=6404204

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002040076A Expired - Fee Related CA2040076C (en) 1990-04-11 1991-04-09 Sound absorbing panel

Country Status (7)

Country Link
EP (1) EP0454949B1 (en)
JP (1) JP2522606B2 (en)
AT (1) ATE120576T1 (en)
CA (1) CA2040076C (en)
DE (2) DE4011705A1 (en)
DK (1) DK0454949T3 (en)
ES (1) ES2071844T3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5587564A (en) * 1994-04-27 1996-12-24 Firma Carl Freudenberg Noise damper
US5589242A (en) * 1992-12-10 1996-12-31 Firma Carl Freudenberg Housing Lining

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4226885C2 (en) * 1992-08-13 2001-04-19 Bayerische Motoren Werke Ag Sound absorption process for motor vehicles
DE4228169C1 (en) * 1992-08-25 1993-10-07 Freudenberg Carl Fa Sound absorbing cladding element
DE9215132U1 (en) * 1992-11-07 1993-04-15 Pelzer, Helmut, 5804 Herdecke Airborne sound absorbing molded part
DE4241518C1 (en) * 1992-12-10 1994-02-24 Freudenberg Carl Fa Fixed plastics cladding round wheel - is double-skinned forming chambers with indentations towards wheel in outer skin
DE4304628C2 (en) * 1993-02-16 1997-04-03 Freudenberg Carl Fa Sound absorbing housing lining
DE9312734U1 (en) * 1993-08-25 1995-01-05 FAIST Automotive GmbH & Co. KG, 86381 Krumbach Multi-layer soundproofing and damping component
DE9404621U1 (en) * 1994-03-18 1995-07-20 M. Faist GmbH & Co KG, 86381 Krumbach Sound absorbing molded body
DE4413009A1 (en) * 1994-04-15 1995-10-19 Naeher Georg Gmbh Sound absorbers for motor vehicles
DE4415983C2 (en) † 1994-05-06 1998-02-19 Continental Ag Device to be attached to the wheel arch of a motor vehicle and acting as a passive sound absorber
CZ286977B6 (en) * 1994-08-12 2000-08-16 Illbruck Gmbh Noise silencer
DE9414943U1 (en) * 1994-09-14 1996-01-18 M. Faist GmbH & Co KG, 86381 Krumbach Foil resonance absorber
CH690143A5 (en) * 1995-01-27 2000-05-15 Rieter Automotive Int Ag Lambda / 4 sound absorbers.
DE29605599U1 (en) * 1996-03-26 1997-07-31 M. Faist GmbH & Co KG, 86381 Krumbach Multi-layer, sound absorbing component
WO1999061221A1 (en) * 1998-05-22 1999-12-02 Rieter Automotive (International) Ag Method for producing a dual-shell component with integrated lambda/4 absorbers
DE19826745A1 (en) * 1998-06-16 1999-12-30 Continental Ag Damping element
GB2341353A (en) * 1998-09-11 2000-03-15 Rover Group Bulkhead assembly
EP1020846B1 (en) * 1999-01-14 2018-09-19 Nichias Corporation Sound absorbing structure
DE19910595A1 (en) * 1999-03-10 2000-09-21 Volkswagen Ag Airborne sound-absorbing molded part
DE19952689A1 (en) * 1999-11-02 2001-05-03 Cww Gerko Akustik Gmbh & Co Kg Soundproofing wall and use of the same
US6598701B1 (en) 2000-06-30 2003-07-29 3M Innovative Properties Company Shaped microperforated polymeric film sound absorbers and methods of manufacturing the same
EP1251062B1 (en) 2001-04-20 2006-06-14 Carcoustics Tech Center GmbH Underbody cowling
DE10228395C1 (en) * 2002-06-25 2003-12-04 Carcoustics Tech Ct Gmbh Acoustic insulation, for motor vehicles, has a shaped body from a deep drawn thermoplastic film, with a second component part to form a hollow zone with it and spacers from the body extend into the hollow
FR2847867B1 (en) * 2002-12-02 2005-08-19 Sofitec Sa SEALING AND SOUNDPROOFING SHEET FOR A BODY COMPONENT
DE20320100U1 (en) * 2003-12-23 2005-05-12 Carcoustics Tech Center Gmbh Airborne sound absorbing component
RU2268380C1 (en) * 2004-05-31 2006-01-20 Федеральное государственное унитарное предприятие Пермский завод "Машиностроитель" Method of producing sound-absorbing structure
EP1736298A1 (en) * 2005-06-17 2006-12-27 Rieter Technologies AG Method of manufacturing of a sound insulating body and sound insulating body
DE102005046087B3 (en) * 2005-09-26 2007-04-05 Carcoustics Tech Center Gmbh Sound insulating underfloor cladding for motor vehicles has plastic hollow body whose underside is formed to reduce air resistance and/or essentially smooth with soft wall region and at least one relatively hard wall region
DE102006018465A1 (en) * 2006-04-19 2007-10-25 Carcoustics Tech Center Gmbh Sound-insulating component for motor vehicles and method for its production
DE102006055336B4 (en) * 2006-11-23 2015-10-15 Federal-Mogul Sealing Systems Gmbh Protective shield for the thermal and acoustic shielding of components of an internal combustion engine
JP5315864B2 (en) * 2008-09-01 2013-10-16 ヤマハ株式会社 Car body structure and floor
FR2943594A1 (en) * 2009-03-24 2010-10-01 Peugeot Citroen Automobiles Sa Acoustic baffle i.e. wall shaped acoustic baffle, for use between engine and passenger compartment of motor vehicle, has cavity incompletely closed to form slit of small width, where slit serving as collar of resonator is zigzag in shape
FR2946278B1 (en) * 2009-06-03 2011-06-17 Mann & Hummel Gmbh METHOD FOR MANUFACTURING ACOUSTIC DEVICE OF PLASTIC MATERIAL BY EXTRUSION BLOWING
DE102012220769A1 (en) * 2012-11-14 2014-05-15 Federal-Mogul Sealing Systems Gmbh Protective shield for thermal and acoustic shielding
EP2939881A1 (en) 2014-04-29 2015-11-04 Autoneum Management AG Alternative Exterior Trim Part
EP2939828A1 (en) 2014-04-29 2015-11-04 Autoneum Management AG Exterior trim part
JP6416944B2 (en) * 2017-01-17 2018-10-31 フタバ産業株式会社 Suppression member
WO2018177573A1 (en) 2017-03-31 2018-10-04 Carcoustics Techconsult Gmbh Acoustically active plastic hollow body, and method for the production thereof
JP7132039B2 (en) 2018-08-30 2022-09-06 株式会社マーレ フィルターシステムズ Head cover for cylinder head of internal combustion engine
JP7028125B2 (en) 2018-09-25 2022-03-02 トヨタ車体株式会社 Sound absorption and insulation structure
CN110369006B (en) * 2019-08-02 2021-11-05 遵义医学院附属医院 A biological safety cabinet with noise reduction function
DE102022131500A1 (en) * 2022-11-29 2024-05-29 Bayerische Motoren Werke Aktiengesellschaft Underbody paneling for a motor vehicle, wheel house for a motor vehicle and motor vehicle

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1502314A (en) * 1974-04-08 1978-03-01 Lockheed Aircraft Corp Cellular sound absorptive structure
DE2649816A1 (en) * 1976-10-29 1978-05-11 Huebner Gummi & Kunststoff Sound-absorbing panel of soft, flexible, polyurethane foam - has integral skin and blind holes to improve noise absorption
DE2834683C2 (en) * 1978-08-08 1980-07-24 Optac Wilfrid Weltin, 6074 Roedermark Sound absorber
GB2038410B (en) * 1978-12-27 1982-11-17 Rolls Royce Acoustic lining utilising resonance
US4421811A (en) * 1979-12-21 1983-12-20 Rohr Industries, Inc. Method of manufacturing double layer attenuation panel with two layers of linear type material
JPS57140511U (en) * 1981-02-28 1982-09-03
DE3615360A1 (en) * 1986-05-06 1987-11-12 Stankiewicz Alois Dr Gmbh COMPONENT WITH ACOUSTIC PROPERTIES

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5589242A (en) * 1992-12-10 1996-12-31 Firma Carl Freudenberg Housing Lining
US5624518A (en) * 1992-12-10 1997-04-29 Firma Carl Freudenberg Method of making a housing liner
US5587564A (en) * 1994-04-27 1996-12-24 Firma Carl Freudenberg Noise damper

Also Published As

Publication number Publication date
JP2522606B2 (en) 1996-08-07
DK0454949T3 (en) 1995-08-28
EP0454949A3 (en) 1992-10-21
DE4011705A1 (en) 1991-10-17
EP0454949A2 (en) 1991-11-06
EP0454949B1 (en) 1995-03-29
JPH04225398A (en) 1992-08-14
DE59105025D1 (en) 1995-05-04
CA2040076C (en) 1995-11-14
ES2071844T3 (en) 1995-07-01
DE4011705C2 (en) 1992-07-23
ATE120576T1 (en) 1995-04-15

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