WO2015091776A1 - Control valve having a sealing segment with reduced opening - Google Patents

Control valve having a sealing segment with reduced opening Download PDF

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Publication number
WO2015091776A1
WO2015091776A1 PCT/EP2014/078435 EP2014078435W WO2015091776A1 WO 2015091776 A1 WO2015091776 A1 WO 2015091776A1 EP 2014078435 W EP2014078435 W EP 2014078435W WO 2015091776 A1 WO2015091776 A1 WO 2015091776A1
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WO
WIPO (PCT)
Prior art keywords
segment
valve
angular
sealing
free ends
Prior art date
Application number
PCT/EP2014/078435
Other languages
French (fr)
Inventor
Emmanuel Talon
Benoît MAURICE
Laurent SOUYRI
Original Assignee
Valeo Systemes Thermiques
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Filing date
Publication date
Application filed by Valeo Systemes Thermiques filed Critical Valeo Systemes Thermiques
Publication of WO2015091776A1 publication Critical patent/WO2015091776A1/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/04Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor
    • F16K5/0442Spindles and actuating means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/072Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members
    • F16K11/076Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members with sealing faces shaped as surfaces of solids of revolution
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/08Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
    • F16K11/085Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug

Definitions

  • the invention relates to a control valve for a fluid circulation circuit, in particular for a cooling circuit of a motor vehicle engine.
  • the invention relates to a control valve for a fluid circulation circuit, comprising a valve body in a fixing face from which opens a blind axial bore having a bottom wall and a peripheral wall in which at least two open lateral openings.
  • Said bore receives an axially rotatable plug capable of occupying at least two angular positions to open / close said lateral orifices according to its angular position to allow / interrupt the distribution of the fluid through said lateral orifices.
  • Said plug comprises an axial hub rotatably mounted in the bore, an angular portion shaped sealing portion cylindrical casing of predetermined height surrounding said hub and integral in rotation with said hub.
  • Said plug further comprises a return member, for example a spring-shaped rod which is interposed between the two free ends of said angular segment-forming cylindrical envelope portion to exert a transverse elastic return force between said free ends in order to deform said segment radially outwardly to ensure a plating of said sealing segment against the wall of the bore.
  • the bore opens into an attachment face of the valve body via an axial orifice which usually constitutes an inlet for the fluid, while the lateral orifices constitute outlet for the fluid, the distribution of the fluid through the outlet channels being controlled according to the angular position taken by the plug.
  • This known control valve finds a particular application in the cooling circuits of motor vehicle thermal engines.
  • the axial orifice, forming a fluid inlet is connected to a cooling fluid inlet coming from the heat engine, while lateral orifices forming a fluid outlet are respectively connected to branches of the circuit.
  • This circuit comprises for example a first branch which contains a cooling radiator of the engine, a second branch which constitutes a bypass of the cooling radiator and a third branch which contains a heater for heating the passenger compartment.
  • control valve described in the application WO-A1-2005/124205 comprises a plug having a hub surrounded by a sealing segment in the form of an angular section of cylindrical envelope which is also integral in rotation with said hub.
  • the seal offered by the segment between the different exit routes must comply with specifications limiting tolerated leakage rates.
  • the plating of the segment against the inner wall of the bore is determined by the force exerted by the ring between the so-called vertical edges of the two free ends of said sealing segment.
  • the object of the invention is to improve the situation and proposes for this purpose a control valve for a fluid circulation circuit, comprising an axially rotating plug, said plug having a sealing segment, in the form of an angular portion of cylindrical shell, and a resilient return member configured to separate from one another two free ends of the sealing segment, said segment having an angular portion, said active, to open / close lateral openings of a body of the valve according to the angular position of said plug so as to allow / interrupt the distribution of the fluid through said lateral orifices, said sealing segment extending angularly beyond said active portion so that the forces exerted by the return member on the segment have a corresponding tangential component.
  • the return member By limiting the active part of the segment, it optimizes the actuation of the valve. In addition, by extending this active part it is avoided that the return member exerts on the so-called vertical edges of the two free ends of said sealing segment efforts oriented substantially radially, as in the case of a segment of 180 °. On the contrary, the return member of the plug according to the invention exerts a force on the segment having a component perpendicular to this direction, that is to say orthoradial. In this way, the plating of the segment is favored and thus the watertightness.
  • said active angular portion extends over at most 180 °
  • the sealing segment extends angularly over at least 233 °
  • said segment comprises an angular portion, said to be inactive, prolonging said active angular portion,
  • said active portion and said inactive portion are made in continuity of material, one of said free ends laterally bordering said active portion and / or the other edge laterally of said inactive portion,
  • said return member comprises a spring-shaped rod which is interposed between the two free ends of said angular segment-shaped cylindrical envelope portion in order to exert a transverse elastic return force between said free ends,
  • said ring has substantially the shape of a U having a transverse branch on either side of which are arranged two so-called vertical parallel branches which are displaced in spacing by the transverse branch,
  • said so-called vertical branches are received in corresponding receiving gutters of the sealing segment which extend along so-called vertical edges of the two free ends of said sealing segment,
  • said ring is made of a metal wire of which each branch has a cylindrical section
  • the receiving gutters of the segment are shaped in angular portion of cylinder of corresponding radius, the so-called vertical branches of the rod have a length (I) of reception in the gutters which makes it possible to exert on said gutters a return force in spacing, the result of which has a point of application which is at a distance of half a height the segment of not more than 20% of a total height (H) of the segment,
  • the wire rod is made of spring steel
  • valve body has a blind axial bore comprising a bottom wall and a peripheral wall in which the lateral orifice (s) open out,
  • said return member is configured to press said segment against said side wall of the valve body
  • valve body has a fixing face at which said bore opens
  • said plug comprises an axial hub rotatably mounted in the bore
  • said hub being in the form of a finger
  • said segment is integral in rotation with said hub.
  • FIG. 1 is a perspective view of a rotary valve plug
  • FIG. 2 is a cross-sectional view of the segment and the associated rod of the valve of Figure 1;
  • FIG. 3 is a perspective view of a segment and an associated rod of a valve according to the invention.
  • FIG. 4 is a cross-sectional view of the segment and associated rod of FIG. 3.
  • FIG. 1 shows a control valve 10 for a fluid circulation circuit, in particular a coolant circulation circuit of a motor vehicle.
  • a valve 10 is for example intended to be attached to an engine block of a vehicle, and to be connected to different bodies of the vehicle requiring a supply of coolant.
  • the valve 10 here comprises a valve body 12 having a fixing face 14 on the associated engine block (not shown) of the vehicle.
  • the face 14 is for example a rectified face.
  • a blind axial bore 16 of the body 12 opens into the face 14.
  • the bore 16 comprises a bottom wall (not shown) and a peripheral wall 20 into which at least two lateral orifices (no shown) associated with valve conduits connected to different members of the vehicle.
  • the ducts 22, 24 may, in a non-limiting manner of the invention, be associated with an engine cooling radiator, a bypass of the cooling radiator, or a heater for heating the passenger compartment of the vehicle.
  • the derivation may include other exchangers.
  • the bore 16 receives a plug 26 mounted axially rotatable about an axial direction "A".
  • This plug 26 is able to occupy at least two angular positions to open / close the lateral orifices to allow / interrupt the distribution of the fluid through said lateral orifices and consequently through the conduits 22, 24.
  • the control of the angular position of the bushel will be advantageously configured to allow it to occupy any desired angular positions between two end positions.
  • the plug 26 essentially comprises a hub 28 and a sealing segment 30 in the form of an angular portion of cylindrical envelope, which surrounds said hub 28 and which is rotationally integral with said hub 28.
  • the segment 30 comprises a peripheral wall 31.
  • the hub 28 comprises a radial arm 32 whose end 34 is received in a notch formed on the surface of an inner periphery 38 of the segment 30.
  • the hub is rotated by an axis 22 and is fixed at the end of this axis 22 by means of a nut 23.
  • the plug 26 comprises a return member comprising here a rod 40 forming a spring which is interposed between the two free ends 41, 43 of said angular portion of cylindrical envelope.
  • the ring 40 is able to exert a transverse elastic return force between the free ends 41, 43 in order to deform the segment 30 radially outwards in order to ensure that said sealing segment 30 is pressed against the wall 20 of the bore 16 .
  • the rod 40 has substantially the shape of a U having a transverse branch 42 on either side of which are arranged two parallel vertical said branches 44, 46 which are fixed in gutters corresponding receiving means 48, 50 of the sealing segment 30.
  • the gutters 48, 50 extend along so-called vertical edges of the two free ends 41, 43 of the sealing segment 30.
  • the segment 30 in the form of an angular portion of envelope extends in an angular coverage "a" of substantially 180 °.
  • the so-called vertical parallel branches 44 and 46 of the ring 40 biased by the central branch 42, bias the ends 41, 43 of the segment 30 through the gutters 48, 50 in the radial direction.
  • FIG. 2 shows the forces Fi, F 2 exerted on the ends 41, 43 of the segment 30.
  • the forces F- ⁇ , F 2 are here purely radial.
  • FIG. 2 the deformation of the outer periphery 31 of the segment 30 under the action of the forces F ⁇ F 2 is shown in dashed lines .
  • the forces F- ⁇ , F 2 purely radial, tend to cause a shrinkage "R" of the periphery, in particular at a middle portion 33 of the segment 30.
  • This shrinkage "R” causes a detachment of the segment 30 in the bore 16. It follows a leakage and leaks within the valve 10.
  • the invention overcomes this disadvantage by proposing a valve 10 of the type described above, the angular coverage is extended to change the orientation of the forces exerted by the branches 44, 46 said vertical rush.
  • the invention proposes a valve 10 of the type described above, characterized in that the angular portion of the angular portion of the cylindrical envelope extends angularly along an angular coverage "a" of moreover 180 °, that is to say with a reduced opening, so that the forces Fi, F 2 exerted by the ring 40 on the segment 30 have a corresponding tangential component ⁇ , T 2 which ensures the plating of said segment 30 on the inner wall 20 of the bore 16.
  • each force F- ⁇ , F 2 exerted by the ring 40 on the segment 30 forms an angle " ⁇ " with the radius n, r 2 of the segment 30 passing through the point of application of the force Fi, F 2 considered, that is to say by the center of the corresponding branch 44, 46 of the ring 40.
  • This angle depends on the opening angle "a" of the segment 30.
  • each force F- ⁇ , F 2 is decomposed into a normal component Ni, N 2 and a tangential or orthoradial component Ti, T 2.
  • the angle " ⁇ " is at least 30 °, which corresponds to an angle "a from a minimum of 233 °. For example, for an angle "a" coverage of 270 °, we arrive at an angle " ⁇ " of
  • FIG. 3 illustrates an embodiment of the invention according to which the sealing segment 42 in the form of an angular portion of a cylindrical envelope has an angular coverage "a" of 233 °. That is, to limit the angular amplitude of the movements of the plug, said segment 30 has a so-called active angular portion to open / close the lateral orifices of the body of the lower valve to its total angular amplitude, for example equal to or less than 180 °. In other words, it is sufficient that the plug is actuated on 180 ° only, or less, to allow / interrupt the distribution of the fluid through said lateral orifices according to the angular position of said plug.
  • Said lateral orifices are positioned accordingly, in particular by arranging them at different axial heights.
  • said segment 30 comprises an angular portion, said inactive, extending said active angular portion.
  • Said active portion and said inactive portion are made here in continuity of material but said inactive portion may be made of any other material, or even be in the form of a simple frame configured to allow a support of said return member , in particular said rod.
  • one 41 of said free ends laterally borders said active portion and the other 43 laterally borders said inactive portion.
  • said inactive portion may, however, be partially or entirely vis-à-vis a side opening of the bore for discharging the valve in case of failure.
  • the so-called vertical branches 44, 46 of the ring 40 have a length "I" of reception in the gutters 48, 50 which makes it possible to exert on said gutters 48, 50 a retraction force in spacing, the resultant has an application point which is distant from a mid-height 52 of the segment of at most 20% of a total height "H" of the segment 30.
  • the rod 40 is made of a wire of which each leg 42, 44, 46 has a section cylindrical, and the gutters 48, 50 for receiving the segment 20 are shaped in angular portion of cylinder of corresponding radius.
  • the wire rod 40 is preferably made of spring steel.
  • said transverse branch 42 is situated in a plane substantially orthogonal to the direction followed by said so-called vertical branches 44, 46.
  • Said spring may further comprise connection portions between said transverse branch 42 and said so-called vertical branches 44 , 46.
  • Said connecting portions advantageously have a double curvature allowing the ring to exit gutters 48, 50 by limiting the forces exerted by said ring on the segment 30 at this level. The invention thus makes it possible to optimize the plating of the segment 30 of a valve 10 of the type described above while limiting its range of angular displacement.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Multiple-Way Valves (AREA)

Abstract

The invention relates to a control valve for a fluid-circulation circuit, comprising a valve body including a bore into which at least two side openings lead and which receives a rotary barrel capable of occupying at least two angular positions such as to open/close said openings, said barrel including an axial hub, a sealing segment (30) in the form of an angular portion of a cylindrical shell surrounding said hub and linked to the hub, and a retaining ring (40) inserted between the two free ends (41, 43) of the segment (30) such as to ensure that said segment (30) is urged into the bore, said retaining ring (40) being U-shaped and including a transverse arm (40) and two so-called vertical parallel arms (44, 46) held in receiving grooves (48, 50) formed along so-called vertical edges of the two free ends (41, 43) of the segment (30), characterised in that the sealing segment (30) in the form of an angular portion of a cylindrical shell extends angularly beyond an active portion of said segment.

Description

VANNE DE COMMANDE AVEC SEGMENT D'ETANCHEITE D'OUVERTURE  CONTROL VALVE WITH OPENING SEAL SEGMENT
REDUITE  SCALED DOWN
L'invention concerne une vanne de commande pour un circuit de circulation de fluide, en particulier pour un circuit de refroidissement d'un moteur thermique de véhicule automobile. The invention relates to a control valve for a fluid circulation circuit, in particular for a cooling circuit of a motor vehicle engine.
Plus particulièrement, l'invention concerne une vanne de commande pour un circuit de circulation de fluide, comprenant un corps de vanne dans une face de fixation duquel débouche un alésage axial borgne comportant une paroi de fond et une paroi périphérique dans laquelle débouchent au moins deux orifices latéraux. Ledit alésage reçoit un boisseau axialement rotatif apte à occuper au moins deux positions angulaires pour ouvrir/fermer lesdits orifices latéraux en fonction de sa position angulaire pour autoriser/interrompre la distribution du fluide au travers desdits orifices latéraux. More particularly, the invention relates to a control valve for a fluid circulation circuit, comprising a valve body in a fixing face from which opens a blind axial bore having a bottom wall and a peripheral wall in which at least two open lateral openings. Said bore receives an axially rotatable plug capable of occupying at least two angular positions to open / close said lateral orifices according to its angular position to allow / interrupt the distribution of the fluid through said lateral orifices.
Ledit boisseau comporte un moyeu axial monté rotatif dans l'alésage, un segment d'étanchéité en forme de portion angulaire d'enveloppe cylindrique de hauteur déterminée entourant ledit moyeu et solidaire en rotation dudit moyeu. Ledit boisseau comprend en outre un organe de rappel, par exemple un jonc formant ressort qui est interposé entre les deux extrémités libres de ladite portion angulaire d'enveloppe cylindrique formant segment pour exercer un effort de rappel élastique transversal entre lesdites extrémités libres afin de déformer ledit segment radialement vers l'extérieur pour assurer un plaquage dudit segment d'étanchéité contre la paroi de l'alésage. Said plug comprises an axial hub rotatably mounted in the bore, an angular portion shaped sealing portion cylindrical casing of predetermined height surrounding said hub and integral in rotation with said hub. Said plug further comprises a return member, for example a spring-shaped rod which is interposed between the two free ends of said angular segment-forming cylindrical envelope portion to exert a transverse elastic return force between said free ends in order to deform said segment radially outwardly to ensure a plating of said sealing segment against the wall of the bore.
On connaît déjà, d'après la demande de brevet internationale WO-A1 -2005/124205, une vanne de commande de ce type que l'on peut qualifier aussi de "vanne rotative" étant donné que le boisseau tourne autour d'un axe de rotation et est reçu dans l'alésage aménagé dans le corps de vanne. It is already known, according to the international patent application WO-A1-2005/124205, a control valve of this type that can also be described as "rotary valve" since the bushel rotates about an axis of rotation and is received in the bore formed in the valve body.
Dans cette vanne de commande connue, l'alésage débouche dans une face de fixation du corps de vanne par l'intermédiaire d'un orifice axial qui constitue habituellement une voie d'entrée pour le fluide, tandis que les orifices latéraux constituent des voies de sortie pour le fluide, la distribution du fluide au travers des voies de sortie étant contrôlée en fonction de la position angulaire prise par le boisseau. Cette vanne de commande connue trouve une application particulière dans les circuits de refroidissement de moteurs thermiques de véhicules automobiles. Dans ce cas, l'orifice axial, formant entrée de fluide, est relié à une arrivée de fluide de refroidissement en provenance du moteur thermique, tandis que des orifices latéraux, formant sortie de fluide, sont reliés respectivement à des branches du circuit. Ce circuit comprend par exemple une première branche qui contient un radiateur de refroidissement du moteur, une deuxième branche qui constitue une dérivation du radiateur de refroidissement et une troisième branche qui contient un aérotherme pour le chauffage de l'habitacle. In this known control valve, the bore opens into an attachment face of the valve body via an axial orifice which usually constitutes an inlet for the fluid, while the lateral orifices constitute outlet for the fluid, the distribution of the fluid through the outlet channels being controlled according to the angular position taken by the plug. This known control valve finds a particular application in the cooling circuits of motor vehicle thermal engines. In this case, the axial orifice, forming a fluid inlet, is connected to a cooling fluid inlet coming from the heat engine, while lateral orifices forming a fluid outlet are respectively connected to branches of the circuit. This circuit comprises for example a first branch which contains a cooling radiator of the engine, a second branch which constitutes a bypass of the cooling radiator and a third branch which contains a heater for heating the passenger compartment.
La vanne de commande décrite dans la demande WO-A1 -2005/124205 comprend un boisseau comportant un moyeu entouré d'un segment d'étanchéité en forme de tronçon angulaire d'enveloppe cylindrique qui est par ailleurs solidaire en rotation dudit moyeu. The control valve described in the application WO-A1-2005/124205 comprises a plug having a hub surrounded by a sealing segment in the form of an angular section of cylindrical envelope which is also integral in rotation with said hub.
L'étanchéité offerte par le segment entre les différentes voies de sortie doit obéir à un cahier des charges limitant les débits de fuite tolérés. Pour cela, le placage du segment contre la paroi interne de l'alésage est déterminé par l'effort exercé par le jonc entre les bords dits verticaux des deux extrémités libres dudit segment d'étanchéité. The seal offered by the segment between the different exit routes must comply with specifications limiting tolerated leakage rates. For this, the plating of the segment against the inner wall of the bore is determined by the force exerted by the ring between the so-called vertical edges of the two free ends of said sealing segment.
Dans cette vanne connue, le segment s'étend sur près de 270° et nécessite donc d'actionner le boisseau sur une large amplitude angulaire pour décrire l'ensemble des lois de commande désirées. Pour remédier à cet inconvénient, il a tout d'abord été envisagé par le déposant de limiter l'envergure angulaire de la vanne mais celui-ci s'est alors rendu compte que l'étanchéité offerte par le boisseau diminuait. In this known valve, the segment extends over nearly 270 ° and therefore requires actuating the plug over a wide angular amplitude to describe all the desired control laws. To remedy this drawback, it was first considered by the applicant to limit the angular span of the valve but it then realized that the seal offered by the bushel decreased.
L'invention a pour but d'améliorer la situation et propose à cet effet une vanne de commande pour un circuit de circulation de fluide, comprenant un boisseau axialement rotatif, ledit boisseau comportant un segment d'étanchéité, en forme de portion angulaire d'enveloppe cylindrique, et un organe de rappel élastique configuré pour écarter l'une de l'autre deux extrémités libres du segment d'étanchéité, ledit segment présentant une portion angulaire, dite active, pour ouvrir/fermer des orifices latéraux d'un corps de la vanne en fonction de la position angulaire dudit boisseau de manière à autoriser/interrompre la distribution du fluide au travers desdits orifices latéraux, ledit segment d'étanchéité s'étendant angulairement au-delà de ladite portion active pour que les efforts exercés par l'organe de rappel sur le segment présentent une composante tangentielle correspondante. En limitant la partie active du segment, on optimise l'actionnement de la vanne. En outre, en prolongeant cette partie active on évite que l'organe de rappel exerce sur les bords dits verticaux des deux extrémités libres dudit segment d'étanchéité des efforts orientés sensiblement radialement, comme dans le cas d'un segment de 180°. Au contraire, l'organe de rappel du boisseau conforme à l'invention exerce un effort sur le segment présentant une composante perpendiculaire à cette direction, c'est-à-dire orthoradiale. On favorise de la sorte le placage du segment et donc l'étanchéité. The object of the invention is to improve the situation and proposes for this purpose a control valve for a fluid circulation circuit, comprising an axially rotating plug, said plug having a sealing segment, in the form of an angular portion of cylindrical shell, and a resilient return member configured to separate from one another two free ends of the sealing segment, said segment having an angular portion, said active, to open / close lateral openings of a body of the valve according to the angular position of said plug so as to allow / interrupt the distribution of the fluid through said lateral orifices, said sealing segment extending angularly beyond said active portion so that the forces exerted by the return member on the segment have a corresponding tangential component. By limiting the active part of the segment, it optimizes the actuation of the valve. In addition, by extending this active part it is avoided that the return member exerts on the so-called vertical edges of the two free ends of said sealing segment efforts oriented substantially radially, as in the case of a segment of 180 °. On the contrary, the return member of the plug according to the invention exerts a force on the segment having a component perpendicular to this direction, that is to say orthoradial. In this way, the plating of the segment is favored and thus the watertightness.
Selon d'autres caractéristiques de l'invention : - ladite portion angulaire active s'étend sur 180° au plus, According to other characteristics of the invention: said active angular portion extends over at most 180 °,
- le segment d'étanchéité s'étend angulairement sur au moins 233°,  the sealing segment extends angularly over at least 233 °,
- ledit segment comprend une portion angulaire, dite inactive, prolongeant ladite portion angulaire active,  said segment comprises an angular portion, said to be inactive, prolonging said active angular portion,
- ladite portion active et ladite portion inactive sont réalisées en continuité de matière, - l'une desdites extrémités libres borde latéralement ladite portion active et/ou l'autre borde latéralement ladite portion inactive,  said active portion and said inactive portion are made in continuity of material, one of said free ends laterally bordering said active portion and / or the other edge laterally of said inactive portion,
- ledit organe de rappel comprend un jonc formant ressort qui est interposé entre les deux extrémités libres de ladite portion angulaire d'enveloppe cylindrique formant segment pour exercer un effort de rappel élastique transversal entre lesdites extrémités libres,  said return member comprises a spring-shaped rod which is interposed between the two free ends of said angular segment-shaped cylindrical envelope portion in order to exert a transverse elastic return force between said free ends,
- ledit jonc présente sensiblement la forme d'un U comportant une branche transversale de part et d'autre de laquelle sont agencées deux branches dites verticales parallèles qui sont rappelées en écartement par la branche transversale,  said ring has substantially the shape of a U having a transverse branch on either side of which are arranged two so-called vertical parallel branches which are displaced in spacing by the transverse branch,
- lesdites branches dites verticales sont reçues dans des gouttières de réception correspondantes du segment d'étanchéité qui s'étendent le long de bords dits verticaux des deux extrémités libres dudit segment d'étanchéité,  said so-called vertical branches are received in corresponding receiving gutters of the sealing segment which extend along so-called vertical edges of the two free ends of said sealing segment,
- ledit jonc est réalisé en un fil métallique dont chaque branche présente une section cylindrique,  said ring is made of a metal wire of which each branch has a cylindrical section,
- les gouttières de réception du segment sont conformées en portion angulaire de cylindre de rayon correspondant, - les branches dites verticales du jonc présentent une longueur (I) de réception dans les gouttières qui permet d'exercer sur lesdites gouttières un effort de rappel en écartement dont la résultante présente un point d'application qui est distant d'une mi-hauteur du segment d'au plus 20% d'une hauteur totale (H) du segment, the receiving gutters of the segment are shaped in angular portion of cylinder of corresponding radius, the so-called vertical branches of the rod have a length (I) of reception in the gutters which makes it possible to exert on said gutters a return force in spacing, the result of which has a point of application which is at a distance of half a height the segment of not more than 20% of a total height (H) of the segment,
- le jonc en fil métallique est réalisé en acier à ressort, - the wire rod is made of spring steel,
- ledit corps de vanne présente un alésage axial borgne comportant une paroi de fond et une paroi périphérique dans laquelle débouchent le ou les orifices latéraux,  said valve body has a blind axial bore comprising a bottom wall and a peripheral wall in which the lateral orifice (s) open out,
- ledit alésage reçoit ledit boisseau,  said bore receives said bushel,
- ledit organe de rappel est configuré pour plaquer ledit segment contre ladite paroi latérale du corps de la vanne,  said return member is configured to press said segment against said side wall of the valve body,
- ledit corps de vanne présente une face de fixation au niveau de laquelle débouche ledit alésage,  said valve body has a fixing face at which said bore opens,
- ledit boisseau comprend un moyeu axial monté rotatif dans l'alésage,  said plug comprises an axial hub rotatably mounted in the bore,
- ledit moyeu se présentant sous la forme d'un doigt,  said hub being in the form of a finger,
- ledit segment est solidaire en rotation dudit moyeu. said segment is integral in rotation with said hub.
D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui suit pour la compréhension de laquelle on se reportera aux dessins annexés dans lesquels : Other features and advantages of the invention will appear on reading the detailed description which follows for the understanding of which reference will be made to the appended drawings in which:
- la figure 1 est une vue en perspective d'une vanne rotative à boisseau; - Figure 1 is a perspective view of a rotary valve plug;
- la figure 2 est une vue en coupe transversale du segment et du jonc associé de la vanne de la figure 1 ; - Figure 2 is a cross-sectional view of the segment and the associated rod of the valve of Figure 1;
- la figure 3 est une vue en perspective d'un segment et d'un jonc associé d'une vanne selon l'invention ; - Figure 3 is a perspective view of a segment and an associated rod of a valve according to the invention;
- la figure 4 est une vue en coupe transversale du segment et du jonc associé de la figure 3. FIG. 4 is a cross-sectional view of the segment and associated rod of FIG. 3.
Dans la description qui va suivre, des chiffres de référence identiques désignent des pièces identiques ou ayant des fonctions similaires. In the following description, like reference numerals designate like parts or having similar functions.
On a représenté à la figure 1 une vanne de commande 10 pour un circuit de circulation de fluide, notamment un circuit de circulation de liquide de refroidissement d'un véhicule automobile. Une telle vanne 10 est par exemple destinée à être fixée à un bloc moteur d'un véhicule, et à être reliée à différents organes du véhicule nécessitant une alimentation en liquide de refroidissement. FIG. 1 shows a control valve 10 for a fluid circulation circuit, in particular a coolant circulation circuit of a motor vehicle. Such a valve 10 is for example intended to be attached to an engine block of a vehicle, and to be connected to different bodies of the vehicle requiring a supply of coolant.
La vanne 10 comporte ici un corps de vanne 12 comportant une face 14 de fixation sur le bloc moteur associé (non représenté) du véhicule. La face 14 est par exemple une face rectifiée. Un alésage 16 axial borgne du corps 12 débouche dans la face 14. Comme l'illustre la figure 1 , l'alésage 16 comporte une paroi de fond (non représentée) et une paroi périphérique 20 dans laquelle débouchent au moins deux orifices latéraux (non représentés) associés à des conduits de la vanne reliés à différents organes du véhicule. Ainsi, à titre d'exemple et de manière non limitative de l'invention, au moins deux orifices (non représentés) associés à des conduits 22, 24, visibles à la figure 1 , débouchent dans la paroi périphérique 20 de l'alésage 16. Les conduits 22, 24 peuvent, de manière non limitative de l'invention, être associés à un radiateur de refroidissement du moteur, une dérivation du radiateur de refroidissement, ou encore un aérotherme pour le chauffage de l'habitacle du véhicule. La dérivation pourra comprendre d'autres échangeurs. The valve 10 here comprises a valve body 12 having a fixing face 14 on the associated engine block (not shown) of the vehicle. The face 14 is for example a rectified face. A blind axial bore 16 of the body 12 opens into the face 14. As illustrated in FIG. 1, the bore 16 comprises a bottom wall (not shown) and a peripheral wall 20 into which at least two lateral orifices (no shown) associated with valve conduits connected to different members of the vehicle. Thus, by way of example and in a nonlimiting manner of the invention, at least two orifices (not shown) associated with conduits 22, 24, visible in FIG. 1, open into the peripheral wall 20 of the bore 16 The ducts 22, 24 may, in a non-limiting manner of the invention, be associated with an engine cooling radiator, a bypass of the cooling radiator, or a heater for heating the passenger compartment of the vehicle. The derivation may include other exchangers.
L'alésage 16 reçoit un boisseau 26 monté axialement rotatif autour d'une direction axiale "A". The bore 16 receives a plug 26 mounted axially rotatable about an axial direction "A".
Ce boisseau 26 est apte à occuper au moins deux positions angulaires pour ouvrir/fermer les orifices latéraux pour autoriser/interrompre la distribution du fluide au travers desdits orifices latéraux et par conséquent à travers les conduits 22, 24. La commande de la position angulaire du boisseau sera avantageusement configurée pour lui permettre d'occuper toutes positions angulaires voulues entre deux positions de fin de course. This plug 26 is able to occupy at least two angular positions to open / close the lateral orifices to allow / interrupt the distribution of the fluid through said lateral orifices and consequently through the conduits 22, 24. The control of the angular position of the bushel will be advantageously configured to allow it to occupy any desired angular positions between two end positions.
Comme l'illustre la figure 1 , le boisseau 26 comporte pour l'essentiel un moyeu 28 et un segment d'étanchéité 30 en forme de portion angulaire d'enveloppe cylindrique, qui entoure ledit moyeu 28 et qui est solidaire en rotation dudit moyeu 28. Le segment 30 comporte une paroi périphérique 31 . A cet effet, de manière non limitative de l'invention, le moyeu 28 comporte un bras radial 32 dont une extrémité 34 est reçue dans une encoche formée à la surface d'une périphérie interne 38 du segment 30. Le moyeu est entraîné en rotation par un axe 22 et est fixé à l'extrémité de cet axe 22 par l'intermédiaire d'un écrou 23. As illustrated in FIG. 1, the plug 26 essentially comprises a hub 28 and a sealing segment 30 in the form of an angular portion of cylindrical envelope, which surrounds said hub 28 and which is rotationally integral with said hub 28. The segment 30 comprises a peripheral wall 31. For this purpose, in a nonlimiting manner of the invention, the hub 28 comprises a radial arm 32 whose end 34 is received in a notch formed on the surface of an inner periphery 38 of the segment 30. The hub is rotated by an axis 22 and is fixed at the end of this axis 22 by means of a nut 23.
Le boisseau 26 comporte un organe de rappel comprenant ici un jonc 40 formant ressort qui est interposé entre les deux extrémités libres 41 , 43 de ladite portion angulaire d'enveloppe cylindrique. Le jonc 40 est apte à exercer un effort de rappel élastique transversal entre les extrémités libres 41 , 43 afin de déformer le segment 30 radialement vers l'extérieur pour assurer un plaquage dudit segment 30 d'étanchéité contre la paroi 20 de l'alésage 16. The plug 26 comprises a return member comprising here a rod 40 forming a spring which is interposed between the two free ends 41, 43 of said angular portion of cylindrical envelope. The ring 40 is able to exert a transverse elastic return force between the free ends 41, 43 in order to deform the segment 30 radially outwards in order to ensure that said sealing segment 30 is pressed against the wall 20 of the bore 16 .
Comme l'illustrent les figures 1 et 2, le jonc 40 présente sensiblement la forme d'un U comportant une branche transversale 42 de part et d'autre de laquelle sont agencées deux branches dites verticales parallèles 44, 46 qui sont fixées dans des gouttières de réception correspondantes 48, 50 du segment d'étanchéité 30. As illustrated in Figures 1 and 2, the rod 40 has substantially the shape of a U having a transverse branch 42 on either side of which are arranged two parallel vertical said branches 44, 46 which are fixed in gutters corresponding receiving means 48, 50 of the sealing segment 30.
Les gouttières 48, 50, s'étendent le long de bords dits verticaux des deux extrémités libres 41 , 43 du segment d'étanchéité 30. The gutters 48, 50 extend along so-called vertical edges of the two free ends 41, 43 of the sealing segment 30.
Comme l'illustre la figure 2, le segment 30 en forme de portion angulaire d'enveloppe s'étend suivant une couverture angulaire "a" de sensiblement 180°. Dans cette configuration, les branches dites verticales parallèles 44 et 46 du jonc 40, sollicités par la branche centrale 42, sollicitent les extrémités 41 , 43 du segment 30 par l'intermédiaire des gouttières 48, 50 selon la direction radiale. As illustrated in FIG. 2, the segment 30 in the form of an angular portion of envelope extends in an angular coverage "a" of substantially 180 °. In this configuration, the so-called vertical parallel branches 44 and 46 of the ring 40, biased by the central branch 42, bias the ends 41, 43 of the segment 30 through the gutters 48, 50 in the radial direction.
Sur la figure 2, on a représenté les efforts Fi, F2 exercés sur les extrémités 41 , 43 du segment 30. Les efforts F-ι, F2 sont ici purement radiaux. FIG. 2 shows the forces Fi, F 2 exerted on the ends 41, 43 of the segment 30. The forces F-ι, F 2 are here purely radial.
Cette conception présente l'inconvénient, compte tenu du jeu fonctionnel du segment 30 dans l'alésage 16, de déformer le segment 30. This design has the disadvantage, given the functional clearance of the segment 30 in the bore 16, to deform the segment 30.
Sur la figure 2, on a représenté en pointillés la déformée de la périphérie externe 31 du segment 30 sous l'action des efforts F^ F2. Comme on peut le voir, les efforts F-ι, F2, purement radiaux, tendent à provoquer un retrait "R" de la périphérie, notamment au niveau d'une partie médiane 33 du segment 30. Ce retrait "R" provoque un décollement du segment 30 dans l'alésage 16. Il s'ensuit un défaut d'étanchéité et des fuites au sein de la vanne 10. In FIG. 2, the deformation of the outer periphery 31 of the segment 30 under the action of the forces F ^ F 2 is shown in dashed lines . As can be seen, the forces F-ι, F 2 , purely radial, tend to cause a shrinkage "R" of the periphery, in particular at a middle portion 33 of the segment 30. This shrinkage "R" causes a detachment of the segment 30 in the bore 16. It follows a leakage and leaks within the valve 10.
L'invention remédie à cet inconvénient en proposant une vanne 10 du type décrit précédemment dont la couverture angulaire est étendue pour modifier l'orientation des efforts exercés par les branches 44, 46 dites verticales du jonc. Dans ce but, l'invention propose une vanne 10 du type décrit précédemment, caractérisée en ce que ce que le segment 30 d'étanchéité en forme de portion angulaire d'enveloppe cylindrique s'étend angulairement suivant une couverture angulaire " a " de plus de 180°, c'est-à-dire avec une ouverture réduite, pour que les efforts Fi, F2 exercés par le jonc 40 sur le segment 30 présentent une composante tangentielle correspondante ΤΊ, T2 qui permet d'assurer le placage dudit segment 30 sur la paroi interne 20 de l'alésage 16. The invention overcomes this disadvantage by proposing a valve 10 of the type described above, the angular coverage is extended to change the orientation of the forces exerted by the branches 44, 46 said vertical rush. For this purpose, the invention proposes a valve 10 of the type described above, characterized in that the angular portion of the angular portion of the cylindrical envelope extends angularly along an angular coverage "a" of moreover 180 °, that is to say with a reduced opening, so that the forces Fi, F 2 exerted by the ring 40 on the segment 30 have a corresponding tangential component ΤΊ, T 2 which ensures the plating of said segment 30 on the inner wall 20 of the bore 16.
En effet, chaque effort F-ι, F2 exercé par le jonc 40 sur le segment 30 forme un angle "β" avec le rayon n, r2 du segment 30 passant par le point d'application de l'effort Fi, F2 considéré, c'est-à-dire par le centre de la branche 44, 46 correspondante du jonc 40.Indeed, each force F-ι, F 2 exerted by the ring 40 on the segment 30 forms an angle "β" with the radius n, r 2 of the segment 30 passing through the point of application of the force Fi, F 2 considered, that is to say by the center of the corresponding branch 44, 46 of the ring 40.
Cet angle dépend de l'angle " a" d'ouverture du segment 30. This angle depends on the opening angle "a" of the segment 30.
De ce fait chaque effort F-ι, F2 se décompose en une composante normale N-i, N2 et une composante tangentielle ou orthoradiale T-i, T2. As a result, each force F-ι, F 2 is decomposed into a normal component Ni, N 2 and a tangential or orthoradial component Ti, T 2.
Pour que le rapport des composantes tangentielles ΤΊ, T2 aux composantes normales N2 soit optimal et assure un placage du jonc 30, il est avantageux que l'angle " β " soit de minimum 30°, ce qui correspond à un angle " a " de minimum 233°. Par exemple, pour un angle " a " de couverture de 270°, on parvient à un angle " β " deIn order for the ratio of the tangential components ΤΊ, T 2 to the normal components N 2 to be optimal and to ensure that the ring 30 is plating, it is advantageous for the angle "β" to be at least 30 °, which corresponds to an angle "a from a minimum of 233 °. For example, for an angle "a" coverage of 270 °, we arrive at an angle "β" of
45°. 45 °.
La figure 3 illustre un mode de réalisation de l'invention selon lequel le segment d'étanchéité 42 en forme de portion angulaire d'enveloppe cylindrique présente une couverture angulaire " a " de 233°. Cela étant, pour limiter l'amplitude angulaire des mouvements du boisseau, ledit segment 30 présente une portion angulaire, dite active, pour ouvrir/fermer les orifices latéraux du corps de la vanne inférieur à son amplitude angulaire totale, par exemple égale ou inférieur à 180°. Autrement dit, il suffit que le boisseau soit actionné sur 180° seulement, ou moins, pour autoriser/interrompre la distribution du fluide au travers desdits orifices latéraux en fonction de la position angulaire dudit boisseau. Lesdits orifices latéraux sont positionnés en conséquence, notamment en les disposant à différentes hauteur axiales. Encore autrement dit, ledit segment 30 comprend une portion angulaire, dite inactive, prolongeant ladite portion angulaire active. Ladite portion active et ladite portion inactive sont réalisées ici en continuité de matière mais ladite portion inactive pourra encore être réalisée en tout autre matériau, voire se présenter sous la forme d'une simple armature configurée pour permettre un prise d'appui dudit organe de rappel, en particulier dudit jonc. FIG. 3 illustrates an embodiment of the invention according to which the sealing segment 42 in the form of an angular portion of a cylindrical envelope has an angular coverage "a" of 233 °. That is, to limit the angular amplitude of the movements of the plug, said segment 30 has a so-called active angular portion to open / close the lateral orifices of the body of the lower valve to its total angular amplitude, for example equal to or less than 180 °. In other words, it is sufficient that the plug is actuated on 180 ° only, or less, to allow / interrupt the distribution of the fluid through said lateral orifices according to the angular position of said plug. Said lateral orifices are positioned accordingly, in particular by arranging them at different axial heights. In other words, said segment 30 comprises an angular portion, said inactive, extending said active angular portion. Said active portion and said inactive portion are made here in continuity of material but said inactive portion may be made of any other material, or even be in the form of a simple frame configured to allow a support of said return member , in particular said rod.
Pour revenir à l'exemple de réalisation illustré, l'une 41 desdites extrémités libres borde latéralement ladite portion active et l'autre 43 borde latéralement ladite portion inactive. II est à noter que ladite partie inactive pourra cependant se trouver partiellement ou en totalité en vis-à-vis d'une ouverture latérale de l'alésage destinée à une décharge de la vanne en cas de défaillance. To return to the exemplary embodiment illustrated, one 41 of said free ends laterally borders said active portion and the other 43 laterally borders said inactive portion. It should be noted that said inactive portion may, however, be partially or entirely vis-à-vis a side opening of the bore for discharging the valve in case of failure.
Par ailleurs il est avantageux pour assurer un placage satisfaisant du segment 30 dans l'alésage que les efforts F-ι, F2 s'exercent sensiblement à mi-hauteur du segment 30. Furthermore, it is advantageous to ensure satisfactory plating of the segment 30 in the bore that the forces F-ι, F 2 are exerted substantially halfway up the segment 30.
Aussi, conformément à cet aspect de l'invention, comme l'illustre la figure 3, les branches dites verticales 44, 46 du jonc 40 présentent une longueur "I" de réception dans les gouttières 48, 50 qui permet d'exercer sur lesdites gouttières 48, 50 un effort de rappel en écartement dont la résultante présente un point d'application qui est distant d'une mi-hauteur 52 du segment d'au plus 20% d'une hauteur totale "H" du segment 30. Also, in accordance with this aspect of the invention, as illustrated in FIG. 3, the so-called vertical branches 44, 46 of the ring 40 have a length "I" of reception in the gutters 48, 50 which makes it possible to exert on said gutters 48, 50 a retraction force in spacing, the resultant has an application point which is distant from a mid-height 52 of the segment of at most 20% of a total height "H" of the segment 30.
Il sera compris que dans le mode de réalisation préféré de l'invention, le jonc 40 est réalisé en un fil métallique dont chaque branche 42, 44, 46 présente une section cylindrique, et les gouttières 48, 50 de réception du segment 20 sont conformées en portion angulaire de cylindre de rayon correspondant. It will be understood that in the preferred embodiment of the invention, the rod 40 is made of a wire of which each leg 42, 44, 46 has a section cylindrical, and the gutters 48, 50 for receiving the segment 20 are shaped in angular portion of cylinder of corresponding radius.
Enfin, on remarquera que pour conférer à la branche transversale 42 l'élasticité voulue, le jonc 40 en fil métallique est réalisé de préférence en acier à ressort. Finally, it will be noted that in order to give the transverse branch 42 the desired elasticity, the wire rod 40 is preferably made of spring steel.
Par ailleurs, ici, ladite branche transversale 42 est située dans un plan sensiblement orthogonale à la direction suivie par lesdites branches dites verticales 44, 46. Ledit ressort pourra en outre comprendre des portions de raccordement entre ladite branche transversale 42 et lesdites branches dites verticales 44, 46. Lesdites portions de raccordement présentent avantageusement une double courbure permettant au jonc de sortir des gouttières 48, 50 en limitant les efforts exercés par ledit jonc sur le segment 30 à ce niveau. L'invention permet donc d'optimiser le placage du segment 30 d'une vanne 10 du type décrit précédemment tout en limitant son amplitude de déplacement angulaire. Moreover, here, said transverse branch 42 is situated in a plane substantially orthogonal to the direction followed by said so-called vertical branches 44, 46. Said spring may further comprise connection portions between said transverse branch 42 and said so-called vertical branches 44 , 46. Said connecting portions advantageously have a double curvature allowing the ring to exit gutters 48, 50 by limiting the forces exerted by said ring on the segment 30 at this level. The invention thus makes it possible to optimize the plating of the segment 30 of a valve 10 of the type described above while limiting its range of angular displacement.

Claims

Revendications claims
1 . Vanne (10) de commande pour un circuit de circulation de fluide, comprenant un boisseau (26) axialement rotatif, ledit boisseau (26) comportant un segment d'étanchéité (30), en forme de portion angulaire d'enveloppe cylindrique, et un organe de rappel élastique configuré pour écarter l'une de l'autre deux extrémités libres (41 , 43) du segment d'étanchéité, ledit segment présentant une portion angulaire, dite active, pour ouvrir/fermer des orifices latéraux d'un corps de la vanne en fonction de la position angulaire dudit boisseau de manière à autoriser/interrompre la distribution du fluide au travers desdits orifices latéraux, ledit segment d'étanchéité (30) s'étendant angulairement au-delà de ladite portion active pour que les efforts (F^ F2) exercés par l'organe de rappel sur le segment (30) présentent une composante tangentielle correspondante (ΤΊ, T2). 1. A control valve (10) for a fluid circulation circuit, comprising an axially rotating plug (26), said plug (26) having a sealing segment (30), in the form of an angular portion of a cylindrical envelope, and a resilient return member configured to separate from one another two free ends (41, 43) of the sealing segment, said segment having an angular portion, so-called active, to open / close lateral ports of a body of the valve as a function of the angular position of said plug so as to allow / interrupt the distribution of the fluid through said lateral orifices, said sealing segment (30) extending angularly beyond said active portion so that the forces ( F ^ F 2 ) exerted by the return member on the segment (30) have a corresponding tangential component (ΤΊ, T 2 ).
2. Vanne (10) selon la revendication 1 dans laquelle ladite portion angulaire active s'étend sur 180° au plus. 2. Valve (10) according to claim 1 wherein said active angular portion extends over 180 ° at most.
3. Vanne (10) selon l'une quelconque des revendications précédentes dans laquelle le segment d'étanchéité (30) s'étend angulairement sur au moins 233°. 3. Valve (10) according to any one of the preceding claims wherein the sealing segment (30) extends angularly over at least 233 °.
4. Vanne (10) selon l'une quelconque des revendications précédentes dans laquelle ledit segment comprend une portion angulaire, dite inactive, prolongeant ladite portion angulaire active. 4. Valve (10) according to any one of the preceding claims wherein said segment comprises an angular portion, said inactive, extending said active angular portion.
5. Vanne (10) selon la revendication précédente dans laquelle ladite portion active et ladite portion inactive sont réalisées en continuité de matière. 5. Valve (10) according to the preceding claim wherein said active portion and said inactive portion are made in continuity of material.
6. Vanne (10) selon l'une quelconque des revendications 4 ou 5 dans laquelle l'une (41 ) desdites extrémité libres borde latéralement ladite portion active et/ou l'autre (43) borde latéralement ladite portion inactive. 6. Valve (10) according to any one of claims 4 or 5 wherein one (41) of said free end laterally borders said active portion and / or the other (43) laterally borders said inactive portion.
7. Vanne (10) selon l'une quelconque des revendications précédentes dans laquelle ledit organe de rappel comprend un jonc (40) formant ressort qui est interposé entre les deux extrémités libres (41 , 43) de ladite portion angulaire d'enveloppe cylindrique formant segment (30) pour exercer un effort de rappel élastique transversal entre lesdites extrémités libres (41 , 43). 7. Valve (10) according to any one of the preceding claims wherein said return member comprises a rod (40) forming a spring which is interposed between the two free ends (41, 43) of said angular portion of cylindrical envelope forming segment (30) for exerting a transverse elastic return force between said free ends (41, 43).
8. Vanne (10) selon la revendication précédente dans laquelle ledit jonc (40) présente sensiblement la forme d'un U comportant une branche transversale (42) de part et d'autre de laquelle sont agencées deux branches dites verticales parallèles (44, 46) qui sont rappelées en écartement par la branche transversale (42). 8. Valve (10) according to the preceding claim wherein said rod (40) has substantially the shape of a U having a transverse branch (42) on either side of which are arranged two so-called vertical parallel branches (44, 46) which are biased apart by the transverse branch (42).
9. Vanne (10) selon la revendication précédentes dans laquelle lesdites branches dites verticales sont reçues dans des gouttières (48, 50) de réception correspondantes du segment (30) d'étanchéité qui s'étendent le long de bords dits verticaux (41 , 43) des deux extrémités libres dudit segment d'étanchéité (30). 9. Valve (10) according to the preceding claim wherein said so-called vertical branches are received in corresponding gutters (48, 50) of the corresponding segment (30) of sealing which extend along so-called vertical edges (41, 43) of the two free ends of said sealing segment (30).
10. Vanne (10) de commande selon la revendication 9 dans laquelle ledit jonc (40) est réalisé en un fil métallique dont chaque branche (42, 44, 46) présente une section cylindrique, et en ce les gouttières (48, 50) de réception du segment (30) sont conformées en portion angulaire de cylindre de rayon correspondant. 10. Control valve (10) according to claim 9 wherein said rod (40) is made of a wire whose each leg (42, 44, 46) has a cylindrical section, and in that the gutters (48, 50) for receiving the segment (30) are shaped as an angular portion of a cylinder of corresponding radius.
1 1 . Vanne (10) selon l'une quelconque des revendications 9 ou 10 dans laquelle les branches dites verticales (42, 44) du jonc (40) présentent une longueur (I) de réception dans les gouttières (48, 50) qui permet d'exercer sur lesdites gouttières (48, 50) un effort de rappel en écartement dont la résultante présente un point d'application qui est distant d'une mi-hauteur (52) du segment (30) d'au plus 20% d'une hauteur totale (H) du segment (30). 1 1. Valve (10) according to any one of claims 9 or 10 wherein the so-called vertical branches (42, 44) of the rod (40) have a length (I) of reception in the gutters (48, 50) which allows exerting on said gutters (48, 50) a spaced apart return force whose resultant has an application point which is at a distance of half a height (52) from the segment (30) of at most 20% of a total height (H) of the segment (30).
12. Vanne (10) de commande selon l'une quelconque des revendications 7 à 1 1 dans laquelle le jonc (40) est réalisé en acier à ressort. 12. Control valve (10) according to any one of claims 7 to 1 1 wherein the rod (40) is made of spring steel.
PCT/EP2014/078435 2013-12-19 2014-12-18 Control valve having a sealing segment with reduced opening WO2015091776A1 (en)

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FR1363009A FR3015616B1 (en) 2013-12-19 2013-12-19 CONTROL VALVE WITH REDUCED OPENING SEAL SEGMENT
FR1363009 2013-12-19

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3489389A (en) * 1964-11-13 1970-01-13 Airborne Mfg Co Rotary shutoff valve
WO2002061312A2 (en) * 2001-02-01 2002-08-08 Wahler Metalúrgica Ltda. Water flow control valve
WO2005124205A1 (en) * 2004-05-17 2005-12-29 Valeo Systemes Thermiques Control valve with sealing segment for fluid circulation circuit
WO2006045172A1 (en) * 2004-10-29 2006-05-04 Wahler Metalurgica Ltda Seal assembly

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3489389A (en) * 1964-11-13 1970-01-13 Airborne Mfg Co Rotary shutoff valve
WO2002061312A2 (en) * 2001-02-01 2002-08-08 Wahler Metalúrgica Ltda. Water flow control valve
WO2005124205A1 (en) * 2004-05-17 2005-12-29 Valeo Systemes Thermiques Control valve with sealing segment for fluid circulation circuit
WO2006045172A1 (en) * 2004-10-29 2006-05-04 Wahler Metalurgica Ltda Seal assembly

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FR3015616B1 (en) 2016-06-10

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