EP2898196B1 - Silencieux et son procédé de fabrication - Google Patents

Silencieux et son procédé de fabrication Download PDF

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Publication number
EP2898196B1
EP2898196B1 EP13765997.5A EP13765997A EP2898196B1 EP 2898196 B1 EP2898196 B1 EP 2898196B1 EP 13765997 A EP13765997 A EP 13765997A EP 2898196 B1 EP2898196 B1 EP 2898196B1
Authority
EP
European Patent Office
Prior art keywords
pouch
sheathing
silencer
filling
glass
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.)
Active
Application number
EP13765997.5A
Other languages
German (de)
English (en)
Other versions
EP2898196A1 (fr
Inventor
Diederik Cuylits
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.)
Cuylits Holding GmbH
Original Assignee
Cuylits Holding 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
Priority claimed from DE102012018371.2A external-priority patent/DE102012018371B4/de
Priority claimed from DE201220103599 external-priority patent/DE202012103599U1/de
Application filed by Cuylits Holding GmbH filed Critical Cuylits Holding GmbH
Priority to PL13765997T priority Critical patent/PL2898196T3/pl
Publication of EP2898196A1 publication Critical patent/EP2898196A1/fr
Application granted granted Critical
Publication of EP2898196B1 publication Critical patent/EP2898196B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • G10K11/002—Devices for damping, suppressing, obstructing or conducting sound in acoustic devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/24—Silencing apparatus characterised by method of silencing by using sound-absorbing materials
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/02—Cross-sectional features
    • D10B2403/024—Fabric incorporating additional compounds
    • D10B2403/0242—Fabric incorporating additional compounds enhancing chemical properties
    • D10B2403/02421—Fabric incorporating additional compounds enhancing chemical properties containing particulate matter, e.g. powder or granulate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2310/00—Selection of sound absorbing or insulating material
    • F01N2310/02—Mineral wool, e.g. glass wool, rock wool, asbestos or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2310/00—Selection of sound absorbing or insulating material
    • F01N2310/14—Wire mesh fabric, woven glass cloth or the like
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4957—Sound device making

Definitions

  • the invention relates to a silencer with at least one bag and corresponding method for producing the aforementioned.
  • a muffler is a device for reducing noise emissions.
  • An absorption silencer contains porous material, usually rock wool, glass wool or glass fiber, which partially absorbs the sound energy, that is, converts it into heat. The effect of sound absorption is enhanced by the multiple reflection.
  • the invention particularly relates to such mufflers.
  • Such silencers for internal combustion engines, in particular of vehicles or trucks, have a perforated inner tube for passing the exhaust gases. This is done in an outer air, dirt and moisture-tight sheath, so that forms a cavity between the inner tube and sheath. This cavity is filled with a sound-absorbing or -absorb Schlour filling. The filling must be heat resistant. The filling of the cavity is complex and it is therefore resorted to prefabricated, flexible or more or less dimensionally stable elements with sound-insulating filling.
  • dimensionally stable glass fiber basalt wool and multicomponent moldings are known, which contain flammable components that retain their shape during the first use of the silencer.
  • Pouches are known for insertion into a muffler cavity intended for sound deadening or absorption, with a shell closed on all sides, with a sound-absorbing or absorbing filling, the envelope consisting of plastic films or meshes. After filling these are welded.
  • WO 2005/049982 revealed as well FR 2 906 307 A1 a pouch for insertion into a sound attenuator or cavity of a silencer having a knitted tubular casing and having a sound absorbing or absorbing filling, the casing being made of glass fibers. The filling is introduced into the shell and the shell is then closed at its ends. It is not disclosed to make certain 3D shapes.
  • DE 203 05 409 U discloses a bag for insertion into a muffler or cavity of a muffler having a tubular non-heat resistant envelope and having a sound absorbing or absorbing filling.
  • the filling is introduced into the shell and the shell is then closed at its ends. It is not disclosed to make certain 3D shapes. The shell burns during operation of the muffler.
  • US 6,068,082 discloses a lattice-like member for insertion into a sound attenuation or absorption cavity of a muffler having a heat resistant shell and having a sound absorbing or absorbing filling. The filling is introduced into the shell and the shell is then closed.
  • GB 2 267 731 discloses a flexible bag for insertion into a sound attenuation or absorption cavity of a muffler with a fusible envelope and with a sound absorbing or absorbing filling. It is disclosed, inter alia, to put the bag around the inner tube of the muffler.
  • a silencer in particular for internal combustion engines, preferably for vehicles or trucks, with a perforated inner tube for passing exhaust gases, an outer air, dirt and moisture-proof sheath and a cavity formed between inner tube and sheath has been developed according to the invention to the effect that at least one bag with a shell closed on all sides and with a sound-absorbing or absorbing filling in a cavity of the muffler intended for soundproofing or absorption, the envelope comprising intermeshed glass fibers, in particular a glass fiber knit, passing the filling through a loop in the envelope of the bag blown into the interior of the bag, and the closed on all sides Shell further comprising passages which are adapted to the outer cross section of the inner tube of the muffler, wherein the inner tube extends through the passage in the shell.
  • the proposed bag for insertion into a designated for sound damping or absorption cavity of a muffler initially comprises a closed-all side shell with an enclosed therein sound-absorbing or -absorb Schlour filling.
  • Under a closed shell according to the invention is not a dense, for example, water, dirt or pressure density understood, such as a film.
  • the term "closed” simply means that during transport, during normal handling, and when inserted into the cavity of the muffler, in the manufacture thereof, the envelope is impermeable to the filling placed therein.
  • the special feature of the invention consists in the fact that the sheath consists of glass fibers and the filling is blown through the envelope of the bag into the interior of the bag.
  • the all-sided closed envelope has bushings. This allows adaptation to the geometry in the interior of the cavity, for example at indentations.
  • the above-mentioned implementation in the shell can therefore absorb the indentation. It is therefore no manual adjustment by pressing / inserting individual bags needed.
  • the implementation is adapted to the outer cross section of the inner tube of the muffler. The bags can then simply be pushed over the inner tube. In the prior art, however, it was necessary to wrap individual bags around the inner tube or to lay several bags around the inner tube.
  • This aspect of the invention can be realized independently of the material used of the casing, that is to say also in the case of the above-mentioned bags known from the prior art, for example of plastic.
  • the mesh size or size of the meshed glass fibers is therefore to be chosen so that the components of the filling are initially well inflated by a mesh of the shell and the usually after blowing an enlarged volume having filling after blowing no longer through the mesh can fall out.
  • the mesh size is therefore preferably 2-9 mm, in particular 2.5-5 mm and in particular preferably 3 mm.
  • the sheath closed on all sides is produced by a single working method, in particular knitting, preferably on a flat knitting machine.
  • Flat knitting machines make it possible to produce complex structures, for example pullovers or closed pouches.
  • other, even higher temperature resistant threads can be used in the knitting process at desired locations.
  • fiberglass casings are made on circular knitting machines and therefore limited to tube shapes and must be closed manually or in a further step.
  • the sheath may preferably have over its length, width and / or height variable cross-sections, in particular steps, curves, bulges, constrictions and / or indentations. From the prior art, only comparatively simple, tubular or pillow-like forms have hitherto been known.
  • the filling is wholly or partly made of heat-resistant rovings, fibers or yarns.
  • Roving is a bundle, strand or multifilament yarn made of parallel filaments (continuous fibers), which is mainly used in the production of fiber reinforced plastics (FRP) or fiber reinforced plastics, a subgroup composites.
  • the cross-section of a roving is usually elliptical or rectangular.
  • rovings with a slight protective rotation eg 10 turns / m
  • Most commonly filaments of glass, aramid or carbon are grouped into rovings. These are easily inflated, for example by a mesh of the shell and increase their volume after blowing, so that they can not fall out through the mesh.
  • the filling is preferably made of glass or basalt materials.
  • the sheath and / or the filling are heat resistant in the range of 400-1300 ° C, preferably 450-1100 ° C.
  • the materials used are preferably E-glass, silica, glass fibers with Si0 2 content greater than 75%, ECR glass, S-glass, C glass.
  • the shape of the bag is adapted to the cavity of a muffler so that the cavity can be filled well without the need for manual stuffing or fitting.
  • FIG. 1 shows the bag 1 according to the invention for insertion into a designated for sound attenuation or absorption cavity of a muffler.
  • Its all-sided closed glass fiber sheath 2 is made by means of a working method on a flat knitting machine and was not sewn.
  • Inside the shell 2 is a sound-absorbing or -absorb Schlierenden filling 3. This was blown through the shell, so by a mesh of the sheath forming knit fabric into the interior of the bag.
  • the closed on all sides sheath 2 has inside a passage 21 for pushing through the inner tube of the muffler.
  • Their diameter is therefore adapted to the outer cross section of the inner tube of the muffler.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Exhaust Silencers (AREA)

Claims (9)

  1. Silencieux, en particulier pour des moteurs à combustion interne, de préférence pour des véhicules automobiles ou des poids-lourds, comprenant un tube intérieur perforé pour le passage des gaz d'échappement, une gaine extérieure étanche à l'air, à la poussière et à l'humidité, et une cavité formée entre le tube interne et la gaine,
    caractérisé en ce
    qu'au moins un sac (1) avec une enveloppe fermée de tous les côtés et (2) avec un garnissage (3) amortissant ou absorbant les sons est utilisé dans une cavité du silencieux prévue pour amortir ou absorber les sons, l'enveloppe (2) présentant des fibres de verre maillées, en particulier un tricot de fibres de verre, le garnissage (3) étant soufflé à l'intérieur du sac à travers une maille dans l'enveloppe (2) du sac (1) et
    l'enveloppe (2) fermée de tous les côtés présente en outre des passages (21) qui sont adaptés à la section transversale extérieure du tube interne du silencieux,
    le tube interne s'étendant à travers le passage dans l'enveloppe.
  2. Silencieux selon la revendication 1, caractérisé en ce que la taille des mailles des fibres de verre maillées de l'enveloppe (2) du sachet (1) est de 2 - 9 mm, en particulier de 2, 5 - 5 mm et particulièrement préférablement de 3 mm.
  3. Silencieux selon l'une quelconque des revendications précédentes, caractérisé en ce que l'enveloppe (2) du sac (1) est exempte de couture.
  4. Silencieux selon l'une quelconque des revendications précédentes, caractérisé en ce que l'enveloppe (2) du sachet (1), fermée de tous les côtés, est fabriquée par un procédé de travail unique, en particulier par tricotage, de préférence sur une machine à tricoter rectiligne.
  5. Silencieux selon l'une quelconque des revendications précédentes, caractérisé en ce que l'enveloppe (2) du sachet (1) présente une forme adaptée à la cavité et en particulier présente sur sa longueur, sa largeur et/ou sa hauteur des sections transversales variables, en particulier des gradins, des arrondis, des bombements, des rétrécissements et/ou des renfoncements.
  6. Silencieux selon l'une quelconque des revendications précédentes, caractérisé en ce que le garnissage de l'enveloppe (2) du sac (1) présente des rovings, des fibres ou des fils résistant à la chaleur, en particulier en verre ou en basalte, ou se compose de ceux-ci, de préférence l'enveloppe et/ou le garnissage étant résistants à la chaleur dans une plage de 400-1300°C, de préférence de 450-1100°C.
  7. Silencieux selon l'une quelconque des revendications précédentes, caractérisé en ce que le garnissage de l'enveloppe (2) du sac (1) présente en tant que matériaux du verre E, de la silice, des fibres de verre avec une teneur en SiO2 supérieure à 75 %, du verre ECR, du verre S, ou du verre C.
  8. Silencieux selon l'une quelconque des revendications précédentes, caractérisé en ce que la forme du sac (1) est adaptée à la cavité d'un silencieux.
  9. Procédé de fabrication d'un silencieux selon l'une quelconque des revendications 1 à 8, comprenant les étapes suivantes :
    - fabrication d'un sac destiné à être inséré dans une cavité du silencieux prévue pour l'amortissement ou l'absorption des sons, comprenant les étapes suivantes :
    - fabrication de l'enveloppe (2) du sac (1), fermée de tous les côtés, en fibres de verre, en particulier par un procédé de travail unique, en particulier par tricotage, sur une machine à tricoter rectiligne, aucune couture ne se produisant ;
    - soufflage d'un garnissage amortissant ou absorbant les sons à l'intérieur du sac (1) à travers une maille dans l'enveloppe (2) du sac (1), l'enveloppe (2) du sac, fermée de tous les côtés, présentant en outre des passages (21) qui sont adaptés à la section transversale extérieure du tube interne du silencieux, et
    le tube interne s'étendant à travers le passage dans l'enveloppe,
    - insertion du sac (1) dans la cavité formée entre le tube interne et la gaine du silencieux, en particulier à l'emplacement prévu pour le sac en question (1) auquel est adaptée la forme du sac (1).
EP13765997.5A 2012-09-18 2013-09-18 Silencieux et son procédé de fabrication Active EP2898196B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL13765997T PL2898196T3 (pl) 2012-09-18 2013-09-18 Tłumik i sposób jego wytwarzania

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102012018371.2A DE102012018371B4 (de) 2012-09-18 2012-09-18 Beutel zum Einsetzen in einen zur Schalldämpfung bestimmten Hohlraum eines Schalldämpfers
DE201220103599 DE202012103599U1 (de) 2012-09-20 2012-09-20 Beutel zum Einsetzen in einen zur Schalldämpfungbestimmten Hohlraum eines Schalldämpfers
PCT/EP2013/069345 WO2014044698A1 (fr) 2012-09-18 2013-09-18 Sac à insérer dans une cavité d'un silencieux destinée à atténuer les bruits

Publications (2)

Publication Number Publication Date
EP2898196A1 EP2898196A1 (fr) 2015-07-29
EP2898196B1 true EP2898196B1 (fr) 2017-07-26

Family

ID=49230724

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13765997.5A Active EP2898196B1 (fr) 2012-09-18 2013-09-18 Silencieux et son procédé de fabrication

Country Status (5)

Country Link
US (1) US9305536B2 (fr)
EP (1) EP2898196B1 (fr)
CN (1) CN104662268B (fr)
PL (1) PL2898196T3 (fr)
WO (1) WO2014044698A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10093437B2 (en) * 2015-05-20 2018-10-09 David Charles LODA High performance insulation packaging and disbursement system
US11325765B1 (en) 2021-04-30 2022-05-10 Blake Ian Goldsmith Audio equipment weighting device

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4421202A (en) * 1981-03-20 1983-12-20 Peabody Abc Corporation Sound attenuator
JPH0625542B2 (ja) * 1985-08-10 1994-04-06 日本ラインツ株式会社 排気筒包囲部材
DE3826707A1 (de) * 1988-08-05 1990-02-08 Gruenzweig & Hartmann Verfahren zum herstellen eines abgas-schalldaempfers
GB2267731A (en) 1992-06-10 1993-12-15 Lancaster Glass Fibre Sound absorber insert for an exhaust silencer.
EP1021289A4 (fr) * 1996-12-02 2000-12-06 Owens Corning Fiberglass Corp Produits d'isolation moules et procede de fabrication de ces produits utilisant une laine a fil continu
GB9723148D0 (en) * 1997-11-04 1998-01-07 Eurotex Thermal Engineering Li Sound muffling material and method of making thereof
US6068082A (en) * 1997-11-21 2000-05-30 D'amico, Jr.; John Muffler packing method and apparatus
US6585078B2 (en) * 2000-12-22 2003-07-01 Race Tools, Inc. Muffler insert
JP2003041923A (ja) * 2001-07-30 2003-02-13 Honda Motor Co Ltd 排気消音装置
US6581723B2 (en) * 2001-08-31 2003-06-24 Owens Corning Composites Sprl Muffler shell filling process, muffler filled with fibrous material and vacuum filling device
US6607052B2 (en) * 2001-09-12 2003-08-19 Owens Corning Composites Sprl Muffler shell filling process and muffler filled with fibrous material
WO2005049982A1 (fr) * 2003-11-21 2005-06-02 Vale S.R.L. Element tisse en forme de boudin servant a contenir un materiau insonorisant
US7165648B2 (en) * 2004-06-22 2007-01-23 Owens Corning Fiberglas Technology, Inc. Method for containing an acoustical material within an assembly
FR2906307B1 (fr) * 2006-09-26 2008-12-19 Faurecia Sys Echappement Dispositif d'echappement des gaz emanant d'un moteur a combustion interne de vehicule automobile.
US8191581B2 (en) * 2009-04-16 2012-06-05 Emcon Technologies, Llc Wire tube structure for exhaust component
US8985270B2 (en) * 2013-03-11 2015-03-24 Molded Acoustical Products Of Easton, Inc. Clean burn muffler packing with stitched fiberglass envelope

Non-Patent Citations (1)

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Also Published As

Publication number Publication date
EP2898196A1 (fr) 2015-07-29
PL2898196T3 (pl) 2017-12-29
WO2014044698A1 (fr) 2014-03-27
US20150235636A1 (en) 2015-08-20
US9305536B2 (en) 2016-04-05
CN104662268B (zh) 2018-12-04
CN104662268A (zh) 2015-05-27

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