EP1425505B1 - Conduite pour fluide, notamment sous forme de tuyau souple d'aspiration d'air non filtre dans un filtre a air de vehicule - Google Patents

Conduite pour fluide, notamment sous forme de tuyau souple d'aspiration d'air non filtre dans un filtre a air de vehicule Download PDF

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Publication number
EP1425505B1
EP1425505B1 EP02777066A EP02777066A EP1425505B1 EP 1425505 B1 EP1425505 B1 EP 1425505B1 EP 02777066 A EP02777066 A EP 02777066A EP 02777066 A EP02777066 A EP 02777066A EP 1425505 B1 EP1425505 B1 EP 1425505B1
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EP
European Patent Office
Prior art keywords
fluid guide
opening
guide according
fluid
components
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.)
Revoked
Application number
EP02777066A
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German (de)
English (en)
Other versions
EP1425505A1 (fr
Inventor
Anton Wolf
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.)
Woco Industrietechnik GmbH
Original Assignee
Woco Industrietechnik 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
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Application filed by Woco Industrietechnik GmbH filed Critical Woco Industrietechnik GmbH
Publication of EP1425505A1 publication Critical patent/EP1425505A1/fr
Application granted granted Critical
Publication of EP1425505B1 publication Critical patent/EP1425505B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10314—Materials for intake systems
    • F02M35/10321—Plastics; Composites; Rubbers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • F02M35/10137—Flexible ducts, e.g. bellows or hoses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10301—Flexible, resilient, pivotally or movable parts; Membranes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10314—Materials for intake systems
    • F02M35/10334—Foams; Fabrics; Porous media; Laminates; Ceramics; Coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/1034—Manufacturing and assembling intake systems
    • F02M35/10354—Joining multiple sections together
    • F02M35/1036—Joining multiple sections together by welding, bonding or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1205—Flow throttling or guiding
    • F02M35/1238—Flow throttling or guiding by using secondary connections to the ambient, e.g. covered by a membrane or a porous member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1272—Intake silencers ; Sound modulation, transmission or amplification using absorbing, damping, insulating or reflecting materials, e.g. porous foams, fibres, rubbers, fabrics, coatings or membranes
    • 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
    • G10K11/161—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general in systems with fluid flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/045—Constructional details of the heat exchangers, e.g. pipes, plates, ribs, insulation, materials, or manufacturing and assembly
    • F02B29/0475—Constructional details of the heat exchangers, e.g. pipes, plates, ribs, insulation, materials, or manufacturing and assembly the intake air cooler being combined with another device, e.g. heater, valve, compressor, filter or EGR cooler, or being assembled on a special engine location
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/1034—Manufacturing and assembling intake systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • F05C2225/08—Thermoplastics

Definitions

  • the invention relates to a fluid guide with at least two members of acoustically im essential dense material and at least one opening for sound attenuation, wherein between two adjacent members an impedance change, in particular in the form of a Impedanzsprunges, the flow resistance of the flowing through the fluid guide Fluids is present.
  • Resonators require some Place, in places, they cover a volume of a few liters, and increase bypass tubes with their up to 30cm also the cost of materials.
  • In the continuing search for simple and effective sound-reducing raw air hoses is also the use of porous materials in the Rohluftschlauchtechnik for discussion.
  • JP 60050265 A discloses a porous pipe socket sintered from aluminum powder, which is connected via a piece of hose with an air filter.
  • the porous, permeable Pipe socket is characterized by a significantly reduced sound level at a constant Air supply efficiency.
  • the pipe socket has the disadvantage of higher Material costs.
  • EP 0 837 238 A2 discloses the use of a porous, moldable, sound-absorbing Materials taught with which the air filter or its leads are lined inside can.
  • An additional interconnected inner wall also entails an increased additional cost for material and production.
  • EP 0 818 648 B1 discloses the use of a porous strip material for producing a Tube known.
  • a tape is wound helically and in the form of a Glued hose and used for sound insulation in the air line in the engine compartment.
  • a porous material a woven plastic is used in practice, which in addition the actually shaping processing process additionally the production of the woven Bandes is expensive.
  • a generic fluid guide is known from GB 2 364 352 A.
  • the known Fluid guide are straight, perforated rigid elements with openings and between each arranged flexible elements, wherein the flexible elements in the manner of a wave pipe section can be trained.
  • the introduction of openings in the straight elements must be done in coordination with the geometry of said elements, which relatively zeitund is costly to obtain a desired sound attenuation.
  • Object of the present invention is therefore the generic fluid guide such develop further that the disadvantages of the prior art are overcome, in particular to provide a Rohluftschlauch, which is extremely inexpensive to manufacture and and also has a high degree of sound-reducing properties.
  • This object is achieved in that the at least one opening in the Range of impedance change between two adjacent members is arranged.
  • a plurality of openings along the circumference of the fluid guide are arranged, and / or each opening is formed substantially rectangular.
  • the total area of the opening or the openings essentially the cross-sectional area of the fluid guide, in particular in the area whose Lufteinsaugendes or its Heilausla litdes corresponds.
  • each opening be punched and / or with an open-pored, porous protective fabric is covered.
  • the members are made of a plastic, in particular polypropylene, preferably in an injection molded or blown are.
  • the protective fabric is a plastic fleece, in particular Polypropylene is, wherein preferably the protective fabric glued to the members or is welded.
  • the members a bellows between comprise two substantially dimensionally stable regions, preferably between the a substantially dimensionally stable area and the bellows on the one hand and the bellows and the other substantially dimensionally stable region, on the other hand, each at least one Opening is arranged.
  • the one substantially dimensionally stable area with a Radiator connection piece is connected or formed, and / or the other substantially dimensionally stable area is connected or formed with an air filter connection piece, for Installation in the engine compartment of a motor vehicle.
  • a device according to the invention is characterized by at least one Curvature, preferably in the one substantially dimensionally stable region, and / or at least a recess, preferably in the other substantially dimensionally stable area.
  • the invention is thus based on the finding that openings in the wall, for example one in the engine compartment of a motor vehicle between the radiator and a Air filter mounted Roh Kunststoffschlauches, especially before and after in the Rohluftschlauch integrated members, where an impedance change of the flow resistance occurs, significantly to reduce the resulting during engine operation sound level before all of the noise at Rohlufteinsaugende, so contribute to the radiator.
  • openings in the wall for example one in the engine compartment of a motor vehicle between the radiator and a Air filter mounted Rohluftschlauches, especially before and after in the Rohluftschlauch integrated members, where an impedance change of the flow resistance occurs, significantly to reduce the resulting during engine operation sound level before all of the noise at Rohlufteinsaugende, so contribute to the radiator.
  • a raw air hose it is essentially a ⁇ / 4 resonator, in which by the inventive Insertion of openings Sound absorption by reflection and / or interference takes place.
  • the dimensioning of the openings is essentially a compromise solution between a
  • the members of the Rohluftschlauchs in particular in the form of a bellows between two im essential dimensionally stable areas are made for manufacturing reasons of a Plastic, such as polypropylene, blown out in a, so that then simply stamped the openings can be. Furthermore, it is favorable for the production, the protective material the openings on the members Medsch doen. This results in a total cost and in the Däm colfung extremely effective Rohluftschlauch.
  • FIG. 1 shows a Rohluftschlauch 1 according to the invention, as in a motor vehicle between a cooler and an air filter (each not shown) can be installed.
  • a plastic Rohluftschlauch 1 has between substantially acoustically dense and dimensionally stable regions 2, 3, at the respective ends 4, 5 a cooler connection piece 6 and an air filter connection piece 7 are located, a flexible Bellows 8 on.
  • the air filter connection piece 7 facing dimensionally stable area 2 is additionally embossed by a curvature 9, while the opposite, the radiator connection piece 6 facing, dimensionally stable area 3 a recess 10 to facilitate the final assembly in the engine compartment (not shown) of the motor vehicle has.
  • each adhesive zone 12, 12 ' serves to prevent the ingress of To prevent dirt particles in the Rohluftschlauch 1 by passing over the openings 11, 11 ' in the region of the adhesive zone 12, 12 ', an air-permeable nonwoven by means of adhesive beads (both not shown) is applied.
  • This fleece which is also made of a plastic may alternatively be welded to the walls of the Rohluftschlauches.

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  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Pipe Accessories (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Exhaust Silencers (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Filtering Materials (AREA)

Abstract

L'invention concerne une conduite (1) pour fluide comportant au moins deux éléments (2, 3, 8) de construction, en matériau sensiblement étanche aux bruits, et au moins un orifice (11, 11') pour dissiper le son. Entre les deux éléments de construction voisins, l'impédance de la résistance à l'écoulement du fluide traversant la conduite varie, notamment sous forme d'un saut d'impédance. L'invention est caractérisée en ce que l'orifice, dans la zone de variation d'impédance, est situé entre les deux éléments de construction voisins.

Claims (9)

  1. Conduite pour fluide (1), comprenant au moins deux éléments de construction (2, 3, 8) formés d'un matériau pratiquement acoustiquement étanche et au moins une ouverture (11, 11') pour l'atténuation du bruit, sachant qu'entre deux éléments de construction (2, 8, 8, 3) voisins est réalisée une modification d'impédance, en particulier réalisée sous la forme d'un saut impédance, de la résistance à l'écoulement du fluide s'écoulant à travers la conduite pour fluide (1), caractérisée en ce que
    la au moins une ouverture (11, 11') est disposée dans la zone de la modification d'impédance, entre deux éléments de construction (2, 3, 8) voisins.
  2. Conduite pour fluide selon la revendication 1, caractérisée en ce que plusieurs ouvertures (11, 11') sont disposées le long de la périphérie de la conduite pour fluide (1) et/ou chaque ouverture (11, 11') est réalisée de façon sensiblement rectangulaire.
  3. Conduite pour fluide selon la revendication 1 ou 2, caractérisée en ce que la surface totale de l'ouverture (11, 11') ou des ouvertures (11, 11') correspond pratiquement à l'aire de la section transversale de la conduite pour fluide (1), en particulier, dans la zone de son extrémité d'aspiration d'air (4) ou de son extrémité d'évacuation d'air (5).
  4. Conduite pour fluide selon l'une des revendications précédentes, caractérisée en ce que chaque ouverture (11, 11') est obtenue par découpage par estampage et/ou est couverte d'un tissu protecteur poreux, à pores ouverts.
  5. Conduite pour fluide selon l'une des revendications précédentes, caractérisée en ce que les éléments de construction (2, 3, 8) sont fabriqués en matière synthétique, en particulier en polypropylène, de préférence, moulés par injection ou soufflés.
  6. Conduite pour fluide selon la revendication 4 ou 5, caractérisée en ce que le tissu protecteur est un matelas de matière synthétique, en particulier en polypropylène, de préférence le tissu protecteur étant collé ou soudé aux éléments de construction (2, 3, 8).
  7. Conduite pour fluide selon l'une des revendications précédentes, caractérisée en ce que les éléments de construction (2, 3, 8) comprennent un soufflet (8) placé entre deux zones (2, 3) à forme pratiquement stable, ou, de préférence entre une zone (2, 3) à forme pratiquement stable et ledit soufflet (8), d'une part, ainsi que le soufflet (8) et l'autre zone (2, 3) à forme pratiquement stable et, d'autre part, est chaque fois ménagée au moins une ouverture (11, 11').
  8. Conduite pour fluide selon la revendication 7, caractérisée en ce qu'une première (2) à forme pratiquement stable est reliée à, ou conformée en, une tubulure de raccordement de radiateur (7), et/ou l'autre zone (3) à forme pratiquement stable est reliée à, ou conformée en, une tubulure de raccordement de filtre à air (6), pour le montage dans le compartiment moteur d'un véhicule automobile.
  9. Conduite pour fluide selon la revendication 7 ou 8, caractérisée par au moins une incurvation (9), de préférence dans la zone (2) à forme pratiquement stable, et/ou au moins un évidement (10), de préférence dans l'autre zone (3) à forme pratiquement stable.
EP02777066A 2001-09-12 2002-09-11 Conduite pour fluide, notamment sous forme de tuyau souple d'aspiration d'air non filtre dans un filtre a air de vehicule Revoked EP1425505B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10144972 2001-09-12
DE10144972A DE10144972C1 (de) 2001-09-12 2001-09-12 Fluidführung, insbesondere in Form eines Rohluftschlauchs zum Einsaugen von Rohluft in einen Luftfilter eines Kraftfahrzeuges
PCT/EP2002/010204 WO2003023217A1 (fr) 2001-09-12 2002-09-11 Conduite pour fluide, notamment sous forme de tuyau souple d'aspiration d'air non filtre dans un filtre a air de vehicule

Publications (2)

Publication Number Publication Date
EP1425505A1 EP1425505A1 (fr) 2004-06-09
EP1425505B1 true EP1425505B1 (fr) 2005-05-11

Family

ID=7698801

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02777066A Revoked EP1425505B1 (fr) 2001-09-12 2002-09-11 Conduite pour fluide, notamment sous forme de tuyau souple d'aspiration d'air non filtre dans un filtre a air de vehicule

Country Status (4)

Country Link
US (1) US7249652B2 (fr)
EP (1) EP1425505B1 (fr)
DE (2) DE10144972C1 (fr)
WO (1) WO2003023217A1 (fr)

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US7249652B2 (en) 2007-07-31
DE50203102D1 (de) 2005-06-16
EP1425505A1 (fr) 2004-06-09
US20040262076A1 (en) 2004-12-30
WO2003023217A1 (fr) 2003-03-20
WO2003023217B1 (fr) 2004-01-08
DE10144972C1 (de) 2003-05-15

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