WO2006095373A1 - Petite structure de fibre de verre en forme de matelas et procede pour sa fabrication - Google Patents

Petite structure de fibre de verre en forme de matelas et procede pour sa fabrication Download PDF

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Publication number
WO2006095373A1
WO2006095373A1 PCT/IT2006/000013 IT2006000013W WO2006095373A1 WO 2006095373 A1 WO2006095373 A1 WO 2006095373A1 IT 2006000013 W IT2006000013 W IT 2006000013W WO 2006095373 A1 WO2006095373 A1 WO 2006095373A1
Authority
WO
WIPO (PCT)
Prior art keywords
glass fibre
reel
winder
tube
muffler
Prior art date
Application number
PCT/IT2006/000013
Other languages
English (en)
Inventor
Luigi Pianese
Original Assignee
Vale S.R.L.
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 Vale S.R.L. filed Critical Vale S.R.L.
Priority to AT06701623T priority Critical patent/ATE460569T1/de
Priority to DE602006012814T priority patent/DE602006012814D1/de
Priority to EP06701623A priority patent/EP1861592B1/fr
Publication of WO2006095373A1 publication Critical patent/WO2006095373A1/fr

Links

Classifications

    • 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
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • F01N1/04—Silencing apparatus characterised by method of silencing by using resonance having sound-absorbing materials in resonance chambers
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/002—Inorganic yarns or filaments
    • D04H3/004—Glass yarns or filaments
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
    • D04H3/07—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments otherwise than in a plane, e.g. in a tubular way
    • D04H3/073—Hollow cylinder shaped
    • 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/06—Inserting sound absorbing material into a chamber

Definitions

  • the present invention relates to the field of mufflers, specifically to mufflers for internal combustion engines.
  • the second method consists in the application of a semi-rigid, sound absorbing, and adequately pre-moulded mass, within the muffler, before the latter is hermetically closed.
  • both techniques have some drawbacks.
  • the first one is not easily carried out due to the complexity of the blowing operation and to the time required for filling the body of the muffler.
  • the second technique is decisively more expensive and therefore it is economically disadvantageous.
  • the object of the present invention is to propose a method of introducing a glass fibre inside a muffler of an internal combustion engine whose muffler has an internal structure defined as "multiple duct structure".
  • the inventive concept at the origin of the present invention is based on the principle of combining the advantages of the aforementioned techniques, without, however, be forced to accept their burdensome drawbacks. Therefore, the present invention intends to completely change the known techniques by providing a cheap product, that can be produced in large amounts with appropriate equipments and machines, and which further can be pre-packaged and is extremely easy to insert into the muffler before the latter is definitively closed.
  • the sound absorbing material i.e.
  • a first phase of the method consists in winding, around a rotating tube or a reel-winder with a specific shape, the thread of glass fibre which will form the final hank (skein) 1 to be introduced into the muffler.
  • Said tube or reel-winder set in rotation around its axis by an electric motor, will give rise to a reel of glass fibre thread, and the diameter of this reel will be correlated to the distance between the internal baffles of the muffler that contain the discharge gas ducts.
  • the length of the tube or reel-winder will be similar to the circumference of the total number of said (gas discharge) ducts to be soundproofed.
  • said squeezing of the sound- deadening mass is performed in order to allow an industrial sewing machine, of a type similar to the one used by shoemakers, to sew it in one or more parts, so that said mass will finally assume a substantially prismatic shape.
  • the object of this central sewing is to permit the handling of the glass fibre, by preventing the individual threads from falling down or getting entangled in an irregular manner before their introduction into the muffler and after their extraction from the tube on which they have been wound.
  • the product, sewed in this manner is ready to be introduced manually within the muffler, and it has a width and a length which are perfectly adapted to the space existing within the muffler to be soundproofed.
  • the muffler can be simply closed and this can be done indifferently using a covering or an embedding technique, both for moulded or rolled muffler types. This can be done because the sound absorbing material processed according to the present invention does not at all protrude from the outer contour of the baffles.
  • the present invention has the object to indicate a new, extremely practical, cheap and quick method of filling the mufflers of internal combustion engines with the sound deadening material.
  • Said sound- deadening material is formed exclusively of glass fibre, without any addition of adhesives, additives, or other polymers used for welding or sewing purposes, or for gluing purposes, in order to facilitate the handling of the material before its insertion in place.
  • adhesives, additives, or other polymers used for welding or sewing purposes, or for gluing purposes, in order to facilitate the handling of the material before its insertion in place.
  • These substances could in fact possibly give rise to toxic fumes at the elevated operation temperatures of the mufflers, or could require more complex manual operations in order to obtain a mattress-like structure of glass fibre to be introduced into the muffler.
  • the present invention in the form of its second embodiment, further improves the first embodiment by allowing the realisation of manufactured articles made of glass fibre, which are rapidly obtained and do not require any addition of other polymers or adhesives to render them handy before their introduction inside the muffler to be soundproofed.
  • this new result is achieved by performing a movement with a compressed air jet, both in the vertical and the horizontal - or diagonal - direction, to obtain a continuous or discontinuous "seam" ("sewing line”) produced in the latter case by an intermittent air jet, this seam being obtained on the product after its extraction from the tube or reel-winder on which it was previously wound.
  • this second embodiment of the present invention consists in a new method of manufacture of sound-absorbing mattress-like structures and it provides for various simple fabrication steps. The first of these steps is analogous to the corresponding one of the first embodiment and consists in winding a desired amount of glass fibre around a tube, or reel- winder, having a diameter equal to the distance between the baffles to be soundproofed.
  • the aforesaid tube, or reel- winder which will be completely wrapped by the glass fibre mass, due to the rotation imparted to it in a conventional manner by any kind of motor (not shown), will have a length equal to the total circumference of the ducts to be soundproofed.
  • the extraction ("unthreading") of the glass fibre mass thus wound around the tube or reel-winder will be facilitated by providing one or more slits on the tube, or by a superposition of lamellae or annular elements modifying (increasing) the diameter of the original tube.
  • the extraction operation could also be facilitated by realizing the reel-winder with a slight taper.
  • the second, innovative processing step which characterises the second embodiment and thereby renders it different from the first embodiment, consists in squeezing (compressing) the so obtained article of glass fibre while forcing the same to pass beneath one or more compressed air jets whose air pressure is within the region from 1 to 12 atmospheres (atm); the appropriate, selected value of pressure, depends on the Tex of the glass fibre which is comprised between 200 and 9600 Tex, and on the density of the fibre, all of which may vary according to the values specified by the customer.
  • These focalised (concentrated) compressed air jets cause a mutual entanglement between the individual threads of glass fibre, thereby rendering extremely handy the so obtained mattress-like structure of glass fibre.
  • This new method according to the second embodiment due to the velocity with which the glass fibre can be made to slide beneath the compressed air jet(s), further reduces the manpower required for the job.
  • This reduction allows to save one half of the required production time and it also increases safety on the production site, since the simple use of compressed air - acting as "glue” - in place of needles and adhesives makes the whole production extremely rapid, harmless, and cheap, due to the fact that no additional material is directly utilised in the product, apart from the glass fibre and compressed air.
  • the number of compressed air jets and their position is directly related to the size of the "small mattress" to be packaged, and as a general rule it may be stated that the greater its size, the greater will be the number of air jets required.
  • Fig. 1 shows a small mattress or mattress-like structure consisting of a glass fibre, processed according to the method corresponding to the first embodiment of the present invention, before its winding around the ducts of a muffler of an internal combustion engine;
  • Fig. 2 shows a muffler with three ducts, of an internal combustion engine, wherein the glass fibre sewed according to the first embodiment of the invention is wound between the two baffles; the mass of glass fibre (small mattress) is first fitted in the space between the individual ducts and then it is wound around them;
  • Fig. 3 shows a muffler of an internal combustion engine, on whose ducts there has been applied - so as to perfectly occupy the space between the two baffles - the glass fibre (small glass fibre mattress) processed according to the first embodiment of the present invention
  • Fig. 4 shows a small, sound-absorbing mattress, or mattress-like structure, made of glass fibre, processed according to the method of the second embodiment of the present invention (which does not include a sewing step), that is, subjecting the small mattress to the action of compressed air;
  • Fig. 5 is a perspective view of the muffler surrounded by the sound-deadening material (small mattress of glass fibre) which is wound around the muffler and is processed according to the second embodiment of the present invention; the figure shows the glass fibre and the ducts, besides the baffles between which the glass fibre is wound, the latter having a "welding line formed by compressed air".
  • the sound-deadening material small mattress of glass fibre
  • a glass fibre is wound around a tube or reel- winder (not shown) of adequate diameter; this manufacturing step does not differ from the corresponding one of the second embodiment of the invention. Therefore, the glass fibre (which then forms a "tube of glass fibre") is taken
  • the two embodiments (methods) according to the present invention differ from each other, because in one case (first embodiment), depending on the size of the squeezed small mattress of glass fibre, one or more seams (sewing lines) 4 (cf. Fig. 1-3, in which a single sewing line is present) will be provided on the small mattress 1, while in the other case (i.e. the second embodiment; cf. Figs. 4 and 5), the small mattress 1 ' will be "welded” by means of compressed air (causing mutual entanglement between individual threads of the fibre along the line indicated by 4').
  • first embodiment depending on the size of the squeezed small mattress of glass fibre, one or more seams (sewing lines) 4 (cf. Fig. 1-3, in which a single sewing line is present) will be provided on the small mattress 1, while in the other case (i.e. the second embodiment; cf. Figs. 4 and 5), the small mattress 1 ' will be "welded” by means of compressed air (causing mutual entanglement between individual thread
  • the small mattress or structure 1 or 1 ' can in both cases be easily handled by an operator, in order to realise a muffler for a vehicle with internal combustion engine, by winding the mattress on the ducts 2 (the latter are three in the illustrative drawings of Figs. 1-3 and 5). Notice that the space between the baffles 3 is entirely filled up by the glass fibre 1 or 1 ' :
  • the second embodiment further speeds up and facilitates the manufacturing process with respect to the background art
  • a particular advantage, shared by both embodiments, is that the mass of glass fibre (1 or 1') does not include additional materials other than a glass fibre.
  • the sewing 4 of the first embodiment is entirely performed with glass fibre threads.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Exhaust Silencers (AREA)
  • Nonwoven Fabrics (AREA)
  • Glass Compositions (AREA)

Abstract

La présente invention concerne un procédé pour remplir les silencieux de moteurs à combustion interne d'un matériau (1) absorbant le son. Le matériau (1) absorbant le son, normalement constitué de fibres de verre, est enroulé selon le procédé de l'invention autour d'un enrouleur ou simplement autour d'un tube dont le diamètre correspond à l'écart entre les parois absorbantes qui délimitent (confinent) les conduits (2) du silencieux. La longueur de l'enrouleur ou du tube est égale à la circonférence totale des conduits (2) autour desquels la fibre sera enroulée en vue d'obtenir une masse d'isolant phonique spécialement réalisée pour remplir tout le volume. La masse d'isolant phonique ainsi obtenue, après son extraction du tube ou de l'enrouleur sur lequel elle a été enroulée, sera d'abord comprimée puis cousue en une ou plusieurs de ses parties, pour en faciliter la manipulation.
PCT/IT2006/000013 2005-03-10 2006-01-12 Petite structure de fibre de verre en forme de matelas et procede pour sa fabrication WO2006095373A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT06701623T ATE460569T1 (de) 2005-03-10 2006-01-12 Kleine matratzenartige glasfaserstruktur und herstellungsverfahren dafür
DE602006012814T DE602006012814D1 (de) 2005-03-10 2006-01-12 Kleine matratzenartige glasfaserstruktur und herstellungsverfahren dafür
EP06701623A EP1861592B1 (fr) 2005-03-10 2006-01-12 Petite structure de fibre de verre en forme de matelas et procede pour sa fabrication

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000107A ITRM20050107A1 (it) 2005-03-10 2005-03-10 Materassino realizzato interamente in fibra di vetro.
ITRM2005A000107 2005-03-10

Publications (1)

Publication Number Publication Date
WO2006095373A1 true WO2006095373A1 (fr) 2006-09-14

Family

ID=36148700

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2006/000013 WO2006095373A1 (fr) 2005-03-10 2006-01-12 Petite structure de fibre de verre en forme de matelas et procede pour sa fabrication

Country Status (5)

Country Link
EP (1) EP1861592B1 (fr)
AT (1) ATE460569T1 (fr)
DE (1) DE602006012814D1 (fr)
IT (1) ITRM20050107A1 (fr)
WO (1) WO2006095373A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011012202A1 (de) * 2011-02-23 2012-08-23 Dbw Holding Gmbh Schalldämpfereinsatz für Kraftfahrzeuge und Verfahren zur Herstellung hiervon
WO2012113866A1 (fr) 2011-02-23 2012-08-30 Dbw Holding Gmbh Procédé de fabrication d'une matière de moulage à base de matériaux fibreux et dispositif correspondant
EP2602370B2 (fr) † 2011-12-07 2018-11-21 SO.LA.IS SOCIETA' LAVORAZIONE ISOLANTI S.r.l. Procédé et machine pour produire un insert destiné à amortir les sons pour pot d'échappement de système d'évacuation de gaz d'échappement d'un moteur à combustion interne
CN111434900A (zh) * 2019-01-14 2020-07-21 郑州宇通客车股份有限公司 一种可拆卸穿孔式消声器
US11725315B2 (en) * 2016-03-16 2023-08-15 So.La.Is.—Societa' Lavorazione Isolanti—S.R.L. Con Unico Socio Method for producing a fibrous mat for the acoustic and/or thermal insulation of a component of a motor vehicle

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104033212A (zh) * 2014-06-11 2014-09-10 成都科力夫科技有限公司 防积碳消声装置
ES2757807T3 (es) 2014-08-05 2020-04-30 So La Is Soc Lavorazione Isolanti S R L Con Unico Socio Método y máquina para producir una inserción estructurada para aislar, de forma acústica y térmica, partes de componentes de un vehículo
EP2990623B1 (fr) 2014-09-01 2018-11-07 ISOLITE GmbH Absorbeur acoustique

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB730911A (en) * 1952-01-30 1955-06-01 Tudor Ab Improved method and apparatus for manufacturing diaphragms and separators for electric cells
EP0074220A2 (fr) * 1981-08-26 1983-03-16 Lancaster Glass Fibre Limited Insertion pour silencieux
JPH09111912A (ja) * 1995-10-24 1997-04-28 Taisei Corp 工事現場用簡易防音壁と遮音方法
US6241043B1 (en) * 1998-05-01 2001-06-05 Johannes Ulrich Goertz Muffler insert and process for the production thereof
JP2003106133A (ja) * 2001-09-28 2003-04-09 Nippon Glass Fiber Kogyo Kk 内燃機関の消音器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB730911A (en) * 1952-01-30 1955-06-01 Tudor Ab Improved method and apparatus for manufacturing diaphragms and separators for electric cells
EP0074220A2 (fr) * 1981-08-26 1983-03-16 Lancaster Glass Fibre Limited Insertion pour silencieux
JPH09111912A (ja) * 1995-10-24 1997-04-28 Taisei Corp 工事現場用簡易防音壁と遮音方法
US6241043B1 (en) * 1998-05-01 2001-06-05 Johannes Ulrich Goertz Muffler insert and process for the production thereof
JP2003106133A (ja) * 2001-09-28 2003-04-09 Nippon Glass Fiber Kogyo Kk 内燃機関の消音器

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 08 29 August 1997 (1997-08-29) *
PATENT ABSTRACTS OF JAPAN vol. 2003, no. 08 6 August 2003 (2003-08-06) *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011012202A1 (de) * 2011-02-23 2012-08-23 Dbw Holding Gmbh Schalldämpfereinsatz für Kraftfahrzeuge und Verfahren zur Herstellung hiervon
WO2012113866A1 (fr) 2011-02-23 2012-08-30 Dbw Holding Gmbh Procédé de fabrication d'une matière de moulage à base de matériaux fibreux et dispositif correspondant
WO2012113867A1 (fr) 2011-02-23 2012-08-30 Dbw Holding Gmbh Élément de silencieux pour véhicules à moteur et procédé de fabrication correspondant
EP2678535A1 (fr) * 2011-02-23 2014-01-01 DBW Holding GmbH Procédé de fabrication d'une matière de moulage à base de matériaux fibreux et dispositif correspondant
DE102011012202B4 (de) * 2011-02-23 2014-09-25 Dbw Holding Gmbh Schalldämpfereinsatz für Kraftfahrzeuge und Verfahren zur Herstellung hiervon
EP2678534B1 (fr) * 2011-02-23 2017-12-06 DBW Holding GmbH Élément de silencieux pour véhicules à moteur et procédé de fabrication correspondant
EP2678535B1 (fr) * 2011-02-23 2018-06-27 DBW Holding GmbH Procédé de fabrication d'une matière de moulage à base de matériaux fibreux et dispositif correspondant
EP2602370B2 (fr) † 2011-12-07 2018-11-21 SO.LA.IS SOCIETA' LAVORAZIONE ISOLANTI S.r.l. Procédé et machine pour produire un insert destiné à amortir les sons pour pot d'échappement de système d'évacuation de gaz d'échappement d'un moteur à combustion interne
US11725315B2 (en) * 2016-03-16 2023-08-15 So.La.Is.—Societa' Lavorazione Isolanti—S.R.L. Con Unico Socio Method for producing a fibrous mat for the acoustic and/or thermal insulation of a component of a motor vehicle
CN111434900A (zh) * 2019-01-14 2020-07-21 郑州宇通客车股份有限公司 一种可拆卸穿孔式消声器

Also Published As

Publication number Publication date
EP1861592A1 (fr) 2007-12-05
EP1861592B1 (fr) 2010-03-10
DE602006012814D1 (de) 2010-04-22
ITRM20050107A1 (it) 2006-09-11
ATE460569T1 (de) 2010-03-15

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