FR2745626A1 - Connector for two non-aligned rigid pipes discharging gas - Google Patents

Connector for two non-aligned rigid pipes discharging gas Download PDF

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Publication number
FR2745626A1
FR2745626A1 FR9602593A FR9602593A FR2745626A1 FR 2745626 A1 FR2745626 A1 FR 2745626A1 FR 9602593 A FR9602593 A FR 9602593A FR 9602593 A FR9602593 A FR 9602593A FR 2745626 A1 FR2745626 A1 FR 2745626A1
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FR
France
Prior art keywords
conduit
rigid
curved
bellows
section
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
FR9602593A
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French (fr)
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FR2745626B1 (en
Inventor
Alain Bredeka
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Automobiles Peugeot SA
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Automobiles Peugeot SA
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Filing date
Publication date
Application filed by Automobiles Peugeot SA filed Critical Automobiles Peugeot SA
Priority to FR9602593A priority Critical patent/FR2745626B1/en
Publication of FR2745626A1 publication Critical patent/FR2745626A1/en
Application granted granted Critical
Publication of FR2745626B1 publication Critical patent/FR2745626B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • 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
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • F01N13/1811—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration
    • F01N13/1816—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration the pipe sections being joined together by flexible tubular elements only, e.g. using bellows or strip-wound pipes
    • 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
    • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • F02M35/10144—Connections of intake ducts to each other or to another device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/10—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations
    • F16L27/107—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations the ends of the pipe being interconnected by a flexible sleeve
    • F16L27/11—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations the ends of the pipe being interconnected by a flexible sleeve the sleeve having the form of a bellows with multiple corrugations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L43/00—Bends; Siphons

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

The device comprises a curved conduit (4) having a bellows (5) for connecting two rigid pipes (7,8) which are not aligned. A guiding piece (9) is fitted on the curved conduit for guiding the gas which is being discharged through the pipes. The guide comprises an even surface which constitutes a prolongation of the upstream rigid pipe. The guide covers a major part of the bellows in the area (5a) located most remotely from the center of curvature (C). The guide comprises a tubular section (10) of the same section as the upstream rigid pipe, and a curved section (11) extending up to the beginning of the downstream rigid pipe.

Description

L'invention est relative à un dispositif de guidage d'un gaz s'écoulant dans un conduit courbe à soufflet. The invention relates to a device for guiding a gas flowing in a curved bellows duct.

Elle se rapporte plus particuliérement au raccordement de deux conduits rigides non alignés par un tel conduit courbe, celui-ci présentant une souplesse autorisant des déplacements relatifs entre les deux conduits rigides. It relates more particularly to the connection of two rigid ducts not aligned by such a curved duct, the latter having a flexibility allowing relative displacements between the two rigid ducts.

Le soufflet contribue à procurer au conduit courbe la souplesse requise mais provoque dans l'écoulement du gaz une perturbation généralement nuisible, notamment dans le cas du raccordement d'un filtre à air fixe d'un véhicule à un organe d'admission d'un moteur thermique porté élastiquement par ce véhicule. The bellows contributes to providing the required flexibility to the curved duct, but causes a generally harmful disturbance in the flow of gas, in particular in the case of the connection of a fixed air filter of a vehicle to an intake member of a heat engine resiliently carried by this vehicle.

L'invention vise à réduire cet inconvénient en adaptant dans le conduit à soufflet un moyen facilitant l'écoulement de gaz qui s'y écoule. The invention aims to reduce this drawback by adapting in the bellows duct a means facilitating the flow of gas which flows therein.

Elle concerne donc un dispositif pour le raccordement de deux conduits rigides non alignés, au moyen d'un conduit courbe à soufflet, caractérisé en ce que dans ce conduit courbe est agencée une pièce de guidage du gaz s'y écoulant, cette pièce étant constituée d'une portion de conduit lisse prolongeant celui des deux conduits rigides qui est en amont, et couvrant intérieurement au moins la majeure partie du soufflet dans sa zone la plus éloignée de son centre de courbure. It therefore relates to a device for connecting two rigid non-aligned conduits, by means of a curved bellows conduit, characterized in that in this curved conduit is arranged a part for guiding the gas flowing therein, this part being constituted a portion of smooth duct extending that of the two rigid conduits which is upstream, and internally covering at least the major part of the bellows in its zone furthest from its center of curvature.

Suivant quelques dispositions intéressantes de l'invention:
- la piéce de guidage comporte un tronçon tubulaire présentant la même section que le conduit rigide qu'il prolonge, et un tronçon en forme de chistera s'étendant jusqu'à proximité de l'autre conduit rigide;
- ce tronçon annulaire et le conduit rigide qu'il prolonge sont assemblés par emmanchement dans un embout tubulaire du conduit courbe;
- la pièce de guidage et le conduit courbe étant réalisés en matière plastique, ils sont assemblés de façon inamovible, notamment par collage, soudage ou surmoulage. According to some interesting features of the invention:
- The guide piece includes a tubular section having the same section as the rigid conduit which it extends, and a chistera-shaped section extending close to the other rigid conduit;
- This annular section and the rigid conduit which it extends are assembled by fitting into a tubular end piece of the curved conduit;
- The guide piece and the curved conduit being made of plastic, they are assembled in a non-removable manner, in particular by gluing, welding or overmolding.

Un mode de réalisation du dispositif selon l'invention est décrit ciaprès, avec référence aux dessins annexés, parmi lesquels:
- la figure 1 est une vue simplifiée partielle d'un moteur de véhicule équipé du dispositif;
- la figure 2 est une vue à plus grande échelle du dispositif, en coupe par un plan médian passant par la ligne centrale moyenne des conduits;
- la figure 3 est une vue en coupe suivant la ligne III-líí de la figure 2.An embodiment of the device according to the invention is described below, with reference to the accompanying drawings, among which:
- Figure 1 is a partial simplified view of a vehicle engine equipped with the device;
- Figure 2 is an enlarged view of the device, in section through a median plane passing through the mean central line of the conduits;
- Figure 3 is a sectional view along line III-líí of Figure 2.

On voit à la figure 1 un moteur 1 de véhicule dont un organe d'admission d'air 2 est relié à un filtre à air 3 par un conduit courbe 4 à soufflet 5. FIG. 1 shows a vehicle engine 1 of which an air intake member 2 is connected to an air filter 3 by a curved duct 4 with bellows 5.

Ce soufflet procure à ce conduit une souplesse permettant de légers déplacements relatifs entre le filtre et le moteur qui sont respectivement reliés à la structure 6 du véhicule, -de façon usuelle non représentée icide manière fixe pour le filtre et par des moyens élastiques pour le moteur.This bellows gives this duct flexibility allowing slight relative displacements between the filter and the engine which are respectively connected to the structure 6 of the vehicle, -usually not shown here in a fixed manner for the filter and by elastic means for the engine. .

Comme visible à la figure 2 le conduit courbe 4 raccorde un conduit rigide 7 d'entrée d'air dans l'organe 2, à un conduit rigide 8 amenant l'air provenant du filtre, comme indiqué par les flèches F. Ces conduits 8 et 7 sont ainsi respectivement disposés en amont et en aval du conduit courbe. As can be seen in FIG. 2, the curved duct 4 connects a rigid duct 7 for the entry of air into the member 2, to a rigid duct 8 bringing the air coming from the filter, as indicated by the arrows F. These ducts 8 and 7 are thus respectively arranged upstream and downstream of the curved conduit.

Cet écoulement d'air est guidé dans le conduit courbe 4 par une pièce rigide 9 comprenant un tronçon tubulaire 10 de même section que le conduit 8 auquel il est juxtaposé en le prolongeant, et un tronçon 11 en forme de chistera qui s'étend jusqu'à proximité du conduit 7 en couvrant intérieurement, sans la toucher, la majeure partie du soufflet 5 dans sa zone 5a la plus éloignée de son centre de courbure C. This air flow is guided in the curved duct 4 by a rigid piece 9 comprising a tubular section 10 of the same section as the duct 8 to which it is juxtaposed by extending it, and a section 11 in the form of a chistera which extends up to 'near the duct 7 by covering internally, without touching it, most of the bellows 5 in its zone 5a furthest from its center of curvature C.

Le tronçon tubulaire 10 et le conduit 8 sont assemblés par emmanchement dans un embout tubulaire 12 du conduit courbe 4, et par serrage de colliers 13 entourant cet embout.  The tubular section 10 and the conduit 8 are assembled by fitting into a tubular end piece 12 of the curved pipe 4, and by tightening collars 13 surrounding this end piece.

Le conduit 4 à soufflet est réalisé en matière souple de type élastomère, et la pièce de guidage 9 est de préférence réalisée en matière plastique dure et est fixée au conduit 4, avant raccordement aux conduits rigides 7 et 8, par un moyen inamovible tel que collage, soudage ou surmoulage. The bellows duct 4 is made of flexible material of elastomer type, and the guide piece 9 is preferably made of hard plastic material and is fixed to the duct 4, before connection to the rigid ducts 7 and 8, by a non-removable means such as bonding, welding or overmolding.

Grâce à cette pièce de guidage 9, I'air s'écoulant dans le conduit courbe 4, donc le long du tronçon 1 1 en forme de chistera, subit beaucoup moins de résistance et de turbulence nuisible que dans les dispositifs usuels, le long des plis du soufflet. II en résulte une meilleure alimentation en air pour le moteur 1. Thanks to this guide piece 9, the air flowing in the curved duct 4, therefore along the section 1 1 in the form of a chistera, undergoes much less resistance and harmful turbulence than in the usual devices, along the bellows folds. This results in a better air supply for the engine 1.

Des variantes du dispositif qui vient d'être décrit peuvent être envisagées, notamment quant au moyen de liaison entre la pièce de guidage et le conduit rigide en amont, et quant à la forme de cette pièce de guidage qui, pour assurer sa fonction, doit dans tous les cas être constituée d'une portion de conduit lisse prolongeant le conduit situé en amont et recouvrant intérieurement au moins la majeure partie du soufflet dans sa zone la plus éloignée de son centre de courbure.  Variants of the device which has just been described can be envisaged, in particular as regards the connection means between the guide part and the rigid conduit upstream, and as to the shape of this guide part which, to ensure its function, must in all cases be made up of a portion of smooth duct extending the duct situated upstream and internally covering at least the major part of the bellows in its zone furthest from its center of curvature.

Claims (4)

REVENDICATIONS 1 - Dispositif pour le raccordement de deux conduits rigides non alignés (7,8), au moyen d'un conduit courbe (4) à soufflet (5), caractérisé en ce que dans ce conduit courbe (4) est agencée une pièce (9) de guidage d'un gaz s'y écoulant, cette pièce (9) étant constituée d'une portion de conduit lisse prolongeant celui (8) des deux conduits rigides qui est en amont, et couvrant intérieurement au moins la majeure partie du soufflet dans sa zone (5a) la plus éloignée de son centre de courbure (C). 1 - Device for connecting two rigid non-aligned conduits (7,8), by means of a curved conduit (4) with bellows (5), characterized in that in this curved conduit (4) is arranged a part ( 9) for guiding a gas flowing therein, this part (9) consisting of a portion of smooth conduit extending that (8) of the two rigid conduits which is upstream, and internally covering at least the major part of the bellows in its zone (5a) furthest from its center of curvature (C). 2 - Dispositif selon la revendication 1, caractérisé en ce que la pièce de guidage (9) comporte un tronçon tubulaire (10) présentant la même section que le conduit rigide (8) qu'il prolonge, et un tronçon (11) en forme de chistera s'étendant jusqu'à proximité de l'autre conduit rigide (7). 2 - Device according to claim 1, characterized in that the guide piece (9) comprises a tubular section (10) having the same section as the rigid conduit (8) which it extends, and a section (11) in shape of chistera extending to near the other rigid conduit (7). 3 - Dispositif selon la revendication 2, caractérisé en ce que ce tronçon annulaire (10) et le conduit rigide (8) qu'il prolonge sont assemblés par emmanchement dans un embout tubulaire (12) du conduit courbe (4). 3 - Device according to claim 2, characterized in that this annular section (10) and the rigid conduit (8) which it extends are assembled by fitting into a tubular end piece (12) of the curved conduit (4). 4 - Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la pièce de guidage (9) et le conduit courbe (4) étant réalisés en matière plastique, ils sont assemblés de façon inamovible, notamment par collage, soudage ou surmoulage.  4 - Device according to any one of the preceding claims, characterized in that the guide piece (9) and the curved conduit (4) being made of plastic, they are assembled in a non-removable manner, in particular by gluing, welding or overmolding .
FR9602593A 1996-03-01 1996-03-01 DEVICE FOR GUIDING A GAS FLOWING IN A CURVED BELLOWS CONDUIT Expired - Fee Related FR2745626B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9602593A FR2745626B1 (en) 1996-03-01 1996-03-01 DEVICE FOR GUIDING A GAS FLOWING IN A CURVED BELLOWS CONDUIT

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FR9602593A FR2745626B1 (en) 1996-03-01 1996-03-01 DEVICE FOR GUIDING A GAS FLOWING IN A CURVED BELLOWS CONDUIT

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FR2745626A1 true FR2745626A1 (en) 1997-09-05
FR2745626B1 FR2745626B1 (en) 1998-04-17

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1132675A1 (en) * 2000-03-08 2001-09-12 Siemens Canada Limited Low restriction hose and seal assembly with bellows
EP1571388A1 (en) * 2004-03-03 2005-09-07 Jui-Fa HUANG Air intake pipe for a motor vehicle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2848111A1 (en) * 1978-11-06 1980-05-14 Interatom Multiple wall pipe bend for nuclear power plants - has similar interfitting curved lengths joining adjacent inner and outer lengths at opposite ends
FR2608726A1 (en) * 1986-12-23 1988-06-24 Wahl Michel Variable-angle pipeline bend
DE4216090A1 (en) * 1992-05-15 1993-11-18 Bischoff Erhardt Gmbh Co Kg Duo-pipe exhaust system for vehicle - uses sliding seat to form connection between two sections of inner pipe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2848111A1 (en) * 1978-11-06 1980-05-14 Interatom Multiple wall pipe bend for nuclear power plants - has similar interfitting curved lengths joining adjacent inner and outer lengths at opposite ends
FR2608726A1 (en) * 1986-12-23 1988-06-24 Wahl Michel Variable-angle pipeline bend
DE4216090A1 (en) * 1992-05-15 1993-11-18 Bischoff Erhardt Gmbh Co Kg Duo-pipe exhaust system for vehicle - uses sliding seat to form connection between two sections of inner pipe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1132675A1 (en) * 2000-03-08 2001-09-12 Siemens Canada Limited Low restriction hose and seal assembly with bellows
EP1571388A1 (en) * 2004-03-03 2005-09-07 Jui-Fa HUANG Air intake pipe for a motor vehicle

Also Published As

Publication number Publication date
FR2745626B1 (en) 1998-04-17

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