EP3196091B1 - Air flow control device - Google Patents

Air flow control device Download PDF

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Publication number
EP3196091B1
EP3196091B1 EP17152039.8A EP17152039A EP3196091B1 EP 3196091 B1 EP3196091 B1 EP 3196091B1 EP 17152039 A EP17152039 A EP 17152039A EP 3196091 B1 EP3196091 B1 EP 3196091B1
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EP
European Patent Office
Prior art keywords
air
shutter
capture device
conduit
obturator
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EP17152039.8A
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German (de)
French (fr)
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EP3196091A1 (en
Inventor
Huu-Thi Do
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Alstom Transport Technologies SAS
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Alstom Transport Technologies SAS
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D27/00—Heating, cooling, ventilating, or air-conditioning

Definitions

  • the present invention relates to an air intake device provided with an air flow control device of the type comprising an air line defining an air intake mouth in a direction of air circulation, an air pipe shutter, mounted movable relative to the pipe between a rest position and an at least partially closed position of the pipe, a means for returning the shutter to its rest position, and a shutter actuation flap, providing an exposed wall in the direction of air circulation.
  • the air capture device is installed for example on a railway vehicle.
  • An air intake device supplies air to a ventilation system or an air conditioning system.
  • the ventilation system or the air conditioning system makes it possible to renew the air or in an enclosed space.
  • This device has its air supply highly dependent on the force and direction of the wind, as well as the direction and speed of the vehicle.
  • the air intake device is then subjected to sudden variations in air flow, causing either blockage or suffocation of the air treatment system.
  • the document US 2,749,833 reveals a mechanical control system for an air intake device.
  • the control system obstructs the outlet of an air line with a pivoting shutter. This shutter is actuated by a pivoting flap disposed inside the pipe.
  • a mechanical reminder system prevents inadvertent clicking of the shutter and regulates the air flow.
  • the presence of the mechanical control system torments the flow of the air flow.
  • An object of the invention is to provide an air intake device regulated in flow rate, having a slightly turbulent air flow.
  • the invention relates to an air intake device of the aforementioned type, characterized in that it comprises an actuating flap external to the air duct.
  • a railway vehicle 12 comprises on its roof an air intake device 13.
  • the device 13 is rigidly fixed to the roof of the rail vehicle 12 by means of a base 14 comprising, for example, four support legs 15.
  • the support feet 15 delimit an air stream between the device 13 and the roof of the rail vehicle 12.
  • the air intake device 13 comprises a rectangular housing 16 comprising side walls 18, a bottom 20 and a cover 22.
  • the air capture device 13 comprises a pipe 24, passing through the housing 16 right through longitudinally.
  • the air duct 24 is of parallelepiped shape.
  • the pipe 24 extends longitudinally along an axis X-X substantially parallel to the direction of advance of the rail vehicle 12.
  • the pipe 24 opens out on either side of the device 13. It defines an interior volume 26.
  • a rectangular intake mouth 28 defines an air inlet in the interior volume 26 of the device 13.
  • the inlet mouth 28 has a width of between 2 cm and 15 cm, and preferably a width of 5 cm. It has a height of between 2 cm and 10 cm, and preferably a height of 4 cm.
  • the intake opening 28 opens towards the front of the device considering the direction of advance of the vehicle.
  • a protective grid is rigidly fixed to the device 13 opposite the intake mouth 28.
  • An outlet orifice 32 delimits an air outlet, from the internal volume 26 of the device 13 towards an air conditioning equipment not shown.
  • the outlet orifice 32 has a width of between 2 cm and 15 cm, and preferably a height of 5 cm. It has a height of between 2 cm and 13 cm, and preferably a height of 4 cm.
  • a shutter 36 is mounted movable relative to the pipe 24, opposite the intake mouth 28. It can be moved between a rest position and a partially closed position of the pipe 24.
  • the shutter 36 is movable in rotation around a horizontal shaft 38, substantially perpendicular to the axis X-X.
  • the shutter 36 is retractable by a rotational movement behind a cap 40 extending the cover 22.
  • the shutter 36 is disposed adjacent to the inlet mouth 28.
  • the front wall 42 has the shape of a cylinder portion. It is exposed to the direction of air circulation as defined in line 24.
  • the ventral wall 44 of the shutter is a bumpy surface whose convexity is turned towards the internal volume 26 of the air duct.
  • This surface is cylindrical and has a generatrix perpendicular to the axis X-X and parallel to the shaft 38.
  • the front wall 42 of the shutter 36 and the inner surface of the cap 40 have an identical radius of curvature.
  • the radius of curvature of the front wall 42 of the shutter and of the cap 40 has a value between 2 cm and 10 cm, and preferably a value of 4 cm.
  • the radius of curvature of the ventral wall 44 is between 4 cm and 40 cm and preferably substantially equal to 10 cm.
  • the shutter 36 is movable through an orifice 46 arranged in the upper surface of the pipe 24.
  • the shutter 36 In its rest position, the shutter 36 is retracted out of the pipe 24 through the orifice 46, between the pipe 24 and the housing 16.
  • the shutter 36 then extends by its ventral wall 44 the upper surface of the pipe 24.
  • the shutter 36 projects into the pipe 24, thereby reducing the cross-section thereof.
  • the shaft 38 is external to the internal volume 26 of the pipe 24. It advantageously extends in the thickness of the upper wall delimiting the pipe 24. It crosses the shutter 36 and is held in position, overhanging the pipe 24 by extensions 48 of the two side walls delimiting the pipe 24.
  • the ends of the shaft 38 open out, through the extensions 48, into lateral compartments adjacent to the pipe 24 delimited by the housing 16.
  • An actuating flap 50 external to the pipe 24, is connected to the shutter 36 for its actuation. It comprises a plate 52 arranged transversely to the air stream, and link arms 54 passing through the bottom 20 of the housing 16 through slots arranged in the lateral compartments.
  • the slots allow the movement of the actuating flap 50.
  • the arms 54 are rigidly connected by their upper ends to the pivoting shaft 38 ensuring a rigid connection between the flap 50 and the shutter 36.
  • each arm 54 is integral with the plate 52 which opposes the direction of air circulation.
  • the plate 52 is located between the roof of the rail vehicle 12 and the base 14 of the air intake device. It extends parallel to the shutter 36.
  • the plate 52 is rectangular in shape.
  • the width of the plate 52 is between 2 cm and 10 cm, and is preferably close to a value of 5 cm. Its height is between 1 cm and 10 cm, and is preferably close to a value of 2 cm.
  • the arms 54 of the actuating flap 50 are rigidly linked to a return means 56.
  • the return means 56 outside the pipe 24, comprises a counterweight 58 carried by a counterweight support 60 secured to the arm 54.
  • the counterweight support 60 is located on the arm 54 between the shaft 38 and the plate 52.
  • the counterweight support 60 and the counterweight 58 are outside the pipe 24. They are contained in the lateral compartment adjacent to the air pipe 24.
  • the counterweight support 60 is, for example, of the general shape of a disc portion. This disc portion extends in the direction of the outlet mouth 32.
  • the figure 3 illustrates the device 13 in its rest position in which the flap 50 is not subjected to any air flow.
  • This rest position is characterized by the angle ⁇ rest , defined by the angle formed by the orientation of the arms 54 with the vertical axis of gravity.
  • the convex surface 44 extends the upper wall of the conduit 24 and forms a transverse lobe projecting over the entire width of the conduit 24, locally reducing its section and in particular its height.
  • the figure 4 illustrates the device 13 in one of its operating positions.
  • the maximum travel of the shutter is minus 45 degrees, and preferably 30 degrees.
  • the shutter 36 In this operating position, the shutter 36 is retracted only partially behind the cover 40.
  • the front wall 42 of the shutter 36 is partially exposed to the direction of circulation of the air perceived by the rail vehicle 12. It partially seals the air inlet 28 in the device 13.
  • the front wall 42 of the shutter 36 completely closes the air intake mouth 28 in the device 13.
  • the external environment subjects the rail vehicle 12 to a direction of air circulation.
  • the air circulating in the air stream exerts a force on the plate 52.
  • the force exerted by the air on the plate 52 rotates the shaft 38, causing the shutter 36 and the counterweights 58 in a circular pendulum movement around the axis 38.
  • the device 13 then leaves the rest position defined by the angle ⁇ rest .
  • the angular displacement of the counterweight 58 generates a moment of return of the shutter 36 on the shaft 38.
  • the shutter 36 finds a position of equilibrium in which the forces exerted on the shaft 38 by the circulation of air on the actuating flap 50, the return force of the counterweight 58 and the weights of the flap actuation 50 and shutter 36 are balanced.
  • the shutter 36 partially obstructs the inlet mouth 28 of the air line 24, regulating the air flow therein.
  • the embossed ventral wall 44 of the shutter 36 guides the air from the inlet mouth 30 to the current section of the pipe 24 while ensuring a laminar air flow in the pipe 24.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air-Flow Control Members (AREA)
  • Air-Conditioning For Vehicles (AREA)

Description

La présente invention concerne un dispositif de captation d'air muni d'un dispositif de contrôle de débit d'air du type comprenant une conduite d'air délimitant une bouche d'admission d'air suivant un sens de circulation de l'air, un obturateur de la conduite d'air, monté déplaçable par rapport à la conduite entre une position de repos et une position d'obturation au moins partielle de la conduite, un moyen de rappel de l'obturateur vers sa position de repos, et un volet d'actionnement de l'obturateur, offrant une paroi exposée suivant le sens de circulation de l'air.The present invention relates to an air intake device provided with an air flow control device of the type comprising an air line defining an air intake mouth in a direction of air circulation, an air pipe shutter, mounted movable relative to the pipe between a rest position and an at least partially closed position of the pipe, a means for returning the shutter to its rest position, and a shutter actuation flap, providing an exposed wall in the direction of air circulation.

Le dispositif de captation d'air est installé par exemple sur un véhicule ferroviaire.The air capture device is installed for example on a railway vehicle.

Un dispositif de captation d'air permet d'alimenter en air un système de ventilation ou bien un système de conditionnement d'air. Le système de ventilation ou le système de conditionnement d'air permet de renouveler l'air ou dans un espace clos.An air intake device supplies air to a ventilation system or an air conditioning system. The ventilation system or the air conditioning system makes it possible to renew the air or in an enclosed space.

Ce dispositif voit son alimentation en air dépendre fortement de la force et de la direction du vent, ainsi que de la direction et de la vitesse du véhicule. Le dispositif de captation d'air est alors soumis à de brusques variations de débit d'air, entraînant soit un engorgement soit une asphyxie du système de traitement d'air.This device has its air supply highly dependent on the force and direction of the wind, as well as the direction and speed of the vehicle. The air intake device is then subjected to sudden variations in air flow, causing either blockage or suffocation of the air treatment system.

Le document US 2 749 833 dévoile un système de contrôle mécanique d'un dispositif de captation d'air. Le système de contrôle obstrue l'orifice de sortie d'une conduite d'air à l'aide d'un obturateur pivotant. Cet obturateur est actionné par un volet pivotant disposé à l'intérieur de la conduite. Un système de rappel mécanique évite le claquement intempestif de l'obturateur et régule le débit d'air.The document US 2,749,833 reveals a mechanical control system for an air intake device. The control system obstructs the outlet of an air line with a pivoting shutter. This shutter is actuated by a pivoting flap disposed inside the pipe. A mechanical reminder system prevents inadvertent clicking of the shutter and regulates the air flow.

La présence du système de contrôle mécanique tourmente l'écoulement du flux d'air.The presence of the mechanical control system torments the flow of the air flow.

Un but de l'invention est de fournir un dispositif de captation d'air régulé en débit, présentant un flux d'air peu tourmenté.An object of the invention is to provide an air intake device regulated in flow rate, having a slightly turbulent air flow.

A cet effet, l'invention a pour objet un dispositif de captation d'air du type précité, caractérisé en ce qu'il comprend un volet d'actionnement extérieur à la conduite d'air.To this end, the invention relates to an air intake device of the aforementioned type, characterized in that it comprises an actuating flap external to the air duct.

Suivant des modes particuliers de réalisation, le dispositif de captation d'air selon l'invention comprend l'une ou plusieurs des caractéristiques suivantes, prise(s) isolément ou suivant toute combinaison techniquement possible :

  • une coiffe derrière laquelle l'obturateur est escamoté en position de repos ;
  • l'obturateur comporte au moins une surface bossée ;
  • le dispositif comporte des pieds de support du dispositif et le volet comprend une plaque disposée entre les pieds ;
  • le moyen de rappel inclut au moins un contrepoids ;
  • le dispositif comporte un boitier traversé de part en part par la conduite, le ou chaque contrepoids étant situé entre le boitier et la conduite ;
  • l'obturateur est mobile en regard de la bouche d'admission, et
  • le dispositif comporte une grille de protection fixée en regard de la bouche d'admission.
According to particular embodiments, the air intake device according to the invention comprises one or more of the following characteristics, taken alone or according to any technically possible combination:
  • a cap behind which the shutter is retracted into the rest position;
  • the shutter comprises at least one embossed surface;
  • the device comprises feet for supporting the device and the shutter comprises a plate disposed between the feet;
  • the return means includes at least one counterweight;
  • the device comprises a box traversed right through by the pipe, the or each counterweight being located between the box and the pipe;
  • the shutter is movable opposite the intake port, and
  • the device comprises a protective grid fixed opposite the intake port.

L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple, et faite en se référant aux dessins annexés, sur lesquels :

  • la figure 1 est une vue en perspective d'un véhicule ferroviaire comportant un dispositif de captation d'air, selon l'invention ;
  • la figure 2 est une vue en coupe partielle du dispositif de captation d'air de la figure 1 ;
  • la figure 3 est une vue de côté de la coupe du dispositif de captation d'air de la figure 2, selon l'invention, en position de repos ; et
  • la figure 4 est une vue de côté de la coupe du dispositif de captation d'air, en position d'obturation.
The invention will be better understood on reading the description which follows, given solely by way of example, and made with reference to the appended drawings, in which:
  • the figure 1 is a perspective view of a railway vehicle comprising an air intake device, according to the invention;
  • the figure 2 is a partial sectional view of the air intake device of the figure 1 ;
  • the figure 3 is a side view of the section of the air intake device of the figure 2 , according to the invention, in the rest position; and
  • the figure 4 is a side view of the section of the air intake device, in the closed position.

En référence à la figure 1, un véhicule ferroviaire 12 comporte sur son toit un dispositif de captation d'air 13.With reference to the figure 1 , a railway vehicle 12 comprises on its roof an air intake device 13.

Le dispositif 13 est fixé rigidement au toit du véhicule ferroviaire 12 par l'intermédiaire d'un socle 14 comprenant, par exemple, quatre pieds de support 15.The device 13 is rigidly fixed to the roof of the rail vehicle 12 by means of a base 14 comprising, for example, four support legs 15.

Les pieds de support 15 délimitent une veine d'air entre le dispositif 13 et le toit du véhicule ferroviaire 12.The support feet 15 delimit an air stream between the device 13 and the roof of the rail vehicle 12.

Le dispositif de captation d'air 13 comprend un boîtier 16 parallélépipédique comprenant des parois latérales 18, un fond 20 et un couvercle 22.The air intake device 13 comprises a rectangular housing 16 comprising side walls 18, a bottom 20 and a cover 22.

En référence à la figure 2, le dispositif de captation d'air 13 comporte une conduite 24, traversant le boîtier 16 de part en part longitudinalement.With reference to the figure 2 , the air capture device 13 comprises a pipe 24, passing through the housing 16 right through longitudinally.

Avantageusement, la conduite d'air 24 est de forme parallélépipédique.Advantageously, the air duct 24 is of parallelepiped shape.

La conduite 24 s'étend longitudinalement selon un axe X-X sensiblement parallèle à la direction d'avancement du véhicule ferroviaire 12. La conduite 24 est débouchante de part et d'autre du dispositif 13. Elle définit un volume intérieur 26.The pipe 24 extends longitudinally along an axis X-X substantially parallel to the direction of advance of the rail vehicle 12. The pipe 24 opens out on either side of the device 13. It defines an interior volume 26.

Une bouche d'admission rectangulaire 28 délimite une entrée d'air dans le volume intérieur 26 du dispositif 13.A rectangular intake mouth 28 defines an air inlet in the interior volume 26 of the device 13.

La bouche d'admission 28 possède une largeur comprise entre 2 cm et 15 cm, et de préférence une largeur de 5 cm. Elle a une hauteur comprise entre 2 cm et 10 cm, et de préférence une hauteur de 4 cm.The inlet mouth 28 has a width of between 2 cm and 15 cm, and preferably a width of 5 cm. It has a height of between 2 cm and 10 cm, and preferably a height of 4 cm.

La bouche d'admission 28 s'ouvre vers l'avant du dispositif en considérant le sens d'avancement du véhicule.The intake opening 28 opens towards the front of the device considering the direction of advance of the vehicle.

Avantageusement, une grille de protection est fixée rigidement au dispositif 13 en regard de la bouche d'admission 28.Advantageously, a protective grid is rigidly fixed to the device 13 opposite the intake mouth 28.

Un orifice de sortie 32 délimite une sortie d'air, depuis le volume intérieur 26 du dispositif 13 vers un équipement de conditionnement d'air non représenté.An outlet orifice 32 delimits an air outlet, from the internal volume 26 of the device 13 towards an air conditioning equipment not shown.

L'orifice de sortie 32 possède une largeur comprise entre 2 cm et 15 cm, et de préférence une hauteur de 5 cm. Il a une hauteur comprise entre 2 cm et 13 cm, et de préférence une hauteur de 4 cm.The outlet orifice 32 has a width of between 2 cm and 15 cm, and preferably a height of 5 cm. It has a height of between 2 cm and 13 cm, and preferably a height of 4 cm.

Un obturateur 36 est monté mobile par rapport à la conduite 24, en regard de la bouche d'admission 28. Il est déplaçable entre une position de repos et une position d'obturation partielle de la conduite 24.A shutter 36 is mounted movable relative to the pipe 24, opposite the intake mouth 28. It can be moved between a rest position and a partially closed position of the pipe 24.

L'obturateur 36 est mobile en rotation autour d'un arbre horizontal 38, sensiblement perpendiculaire à l'axe X-X. L'obturateur 36 est escamotable par un mouvement de rotation derrière une coiffe 40 prolongeant le couvercle 22.The shutter 36 is movable in rotation around a horizontal shaft 38, substantially perpendicular to the axis X-X. The shutter 36 is retractable by a rotational movement behind a cap 40 extending the cover 22.

L'obturateur 36 est disposé de manière adjacente à la bouche d'admission 28.The shutter 36 is disposed adjacent to the inlet mouth 28.

Il comporte une paroi frontale 42 tournée vers la bouche d'admission 28 et une paroi ventrale 44 tournée vers le volume intérieur 26.It has a front wall 42 facing the inlet mouth 28 and a ventral wall 44 facing the interior volume 26.

La paroi frontale 42 a la forme d'une portion de cylindre. Elle est exposée au sens de circulation de l'air tel que défini dans la conduite 24.The front wall 42 has the shape of a cylinder portion. It is exposed to the direction of air circulation as defined in line 24.

La paroi ventrale 44 de l'obturateur est une surface bossée dont la convexité est tournée vers le volume intérieur 26 de la conduite d'air. Cette surface est cylindrique et a une génératrice perpendiculaire à l'axe X-X et parallèle à l'arbre 38.The ventral wall 44 of the shutter is a bumpy surface whose convexity is turned towards the internal volume 26 of the air duct. This surface is cylindrical and has a generatrix perpendicular to the axis X-X and parallel to the shaft 38.

Avantageusement, la paroi frontale 42 de l'obturateur 36 et la surface intérieure de la coiffe 40 ont un rayon de courbure identique.Advantageously, the front wall 42 of the shutter 36 and the inner surface of the cap 40 have an identical radius of curvature.

Le rayon de courbure de la paroi frontale 42 de l'obturateur et de la coiffe 40 possède une valeur comprise entre 2 cm et 10 cm, et de préférence une valeur de 4 cm.The radius of curvature of the front wall 42 of the shutter and of the cap 40 has a value between 2 cm and 10 cm, and preferably a value of 4 cm.

Le rayon de courbure de la paroi ventrale 44 est compris entre 4 cm et 40 cm et de préférence sensiblement égal à 10 cm.The radius of curvature of the ventral wall 44 is between 4 cm and 40 cm and preferably substantially equal to 10 cm.

L'obturateur 36 est mobile au travers d'un orifice 46 aménagé dans la surface supérieure de la conduite 24.The shutter 36 is movable through an orifice 46 arranged in the upper surface of the pipe 24.

Dans sa position de repos, l'obturateur 36 est escamoté hors de la conduite 24 au travers de l'orifice 46, entre la conduite 24 et le boîtier 16.In its rest position, the shutter 36 is retracted out of the pipe 24 through the orifice 46, between the pipe 24 and the housing 16.

L'obturateur 36 prolonge alors par sa paroi ventrale 44 la surface supérieure de la conduite 24.The shutter 36 then extends by its ventral wall 44 the upper surface of the pipe 24.

Dans sa position d'obturation partielle, l'obturateur 36 fait saillie dans la conduite 24 réduisant ainsi la section de celle-ci.In its partially closed position, the shutter 36 projects into the pipe 24, thereby reducing the cross-section thereof.

L'arbre 38 est extérieur au volume intérieur 26 de la conduite 24. Il s'étend avantageusement dans l'épaisseur de la paroi supérieure délimitant la conduite 24. Il traverse l'obturateur 36 et est maintenu en position, en surplomb de la conduite 24 par des prolongements 48 des deux parois latérales délimitant la conduite 24.The shaft 38 is external to the internal volume 26 of the pipe 24. It advantageously extends in the thickness of the upper wall delimiting the pipe 24. It crosses the shutter 36 and is held in position, overhanging the pipe 24 by extensions 48 of the two side walls delimiting the pipe 24.

Les extrémités de l'arbre 38 sont débouchantes, au travers des prolongements 48, dans des compartiments latéraux adjacents à la conduite 24 délimités par le boîtier 16.The ends of the shaft 38 open out, through the extensions 48, into lateral compartments adjacent to the pipe 24 delimited by the housing 16.

Un volet d'actionnement 50, extérieur à la conduite 24, est relié à l'obturateur 36 pour son actionnement. Il comprend une plaque 52 disposée transversalement à la veine d'air, et des bras de liaison 54 traversant le fond 20 du boîtier 16 au travers de fentes aménagées dans les compartiments latéraux.An actuating flap 50, external to the pipe 24, is connected to the shutter 36 for its actuation. It comprises a plate 52 arranged transversely to the air stream, and link arms 54 passing through the bottom 20 of the housing 16 through slots arranged in the lateral compartments.

Les fentes permettent le déplacement du volet d'actionnement 50.The slots allow the movement of the actuating flap 50.

Les bras 54 sont reliés rigidement par leurs extrémités supérieures à l'arbre pivotant 38 assurant une liaison rigide entre le volet 50 et l'obturateur 36.The arms 54 are rigidly connected by their upper ends to the pivoting shaft 38 ensuring a rigid connection between the flap 50 and the shutter 36.

L'extrémité inférieure de chaque bras 54 est solidaire de la plaque 52 qui s'oppose au sens de circulation de l'air.The lower end of each arm 54 is integral with the plate 52 which opposes the direction of air circulation.

La plaque 52 est située entre le toit du véhicule ferroviaire 12 et le socle 14 du dispositif de captation d'air. Elle s'étend parallèlement à l'obturateur 36.The plate 52 is located between the roof of the rail vehicle 12 and the base 14 of the air intake device. It extends parallel to the shutter 36.

La plaque 52 est de forme rectangulaire.The plate 52 is rectangular in shape.

La largeur de la plaque 52 est comprise entre 2 cm et 10 cm, et est de préférence proche d'une valeur de 5 cm. Sa hauteur est comprise entre 1 cm et 10 cm, et est de préférence proche d'une valeur de 2 cm.The width of the plate 52 is between 2 cm and 10 cm, and is preferably close to a value of 5 cm. Its height is between 1 cm and 10 cm, and is preferably close to a value of 2 cm.

Les bras 54 du volet d'actionnement 50 sont liés rigidement à un moyen de rappel 56.The arms 54 of the actuating flap 50 are rigidly linked to a return means 56.

Le moyen de rappel 56, extérieur à la conduite 24, comprend un contrepoids 58 porté par un support de contrepoids 60 solidaire du bras 54.The return means 56, outside the pipe 24, comprises a counterweight 58 carried by a counterweight support 60 secured to the arm 54.

Le support de contrepoids 60 est situé sur le bras 54 entre l'arbre 38 et la plaque 52.The counterweight support 60 is located on the arm 54 between the shaft 38 and the plate 52.

Le support de contrepoids 60 et le contrepoids 58 sont extérieurs à la conduite 24. Ils sont contenus dans le compartiment latéral adjacent à la conduite d'air 24.The counterweight support 60 and the counterweight 58 are outside the pipe 24. They are contained in the lateral compartment adjacent to the air pipe 24.

Le support de contrepoids 60 est, par exemple, de la forme générale d'une portion de disque. Cette portion de disque s'étend en direction de la bouche de sortie 32.The counterweight support 60 is, for example, of the general shape of a disc portion. This disc portion extends in the direction of the outlet mouth 32.

La figure 3 illustre le dispositif 13 dans sa position de repos dans laquelle le volet 50 n'est soumis à aucun flux d'air. Cette position de repos est caractérisée par l'angle αrepos, défini par l'angle formé par l'orientation des bras 54 avec l'axe vertical de la gravité.The figure 3 illustrates the device 13 in its rest position in which the flap 50 is not subjected to any air flow. This rest position is characterized by the angle α rest , defined by the angle formed by the orientation of the arms 54 with the vertical axis of gravity.

Dans cette position de repos, l'obturateur 36 est totalement hors de la conduite 24 et est escamoté derrière la coiffe 40.In this rest position, the shutter 36 is completely out of the pipe 24 and is retracted behind the cover 40.

Dans cette position, la surface convexe 44 prolonge la paroi supérieure du conduit 24 et forme un lobe transversal saillant sur toute la largeur de la conduite 24, réduisant localement sa section et notamment sa hauteur.In this position, the convex surface 44 extends the upper wall of the conduit 24 and forms a transverse lobe projecting over the entire width of the conduit 24, locally reducing its section and in particular its height.

La figure 4 illustre le dispositif 13 dans une de ses positions de fonctionnement.The figure 4 illustrates the device 13 in one of its operating positions.

Le débattement maximal de l'obturateur est de moins 45 degrés, et de préférence de 30 degrés.The maximum travel of the shutter is minus 45 degrees, and preferably 30 degrees.

Dans cette position de fonctionnement, l'obturateur 36 est escamoté seulement partiellement derrière la coiffe 40. La paroi frontale 42 de l'obturateur 36 est exposée partiellement au sens de circulation de l'air perçu par le véhicule ferroviaire 12. Elle obture partiellement la bouche d'admission 28 de l'air dans le dispositif 13.In this operating position, the shutter 36 is retracted only partially behind the cover 40. The front wall 42 of the shutter 36 is partially exposed to the direction of circulation of the air perceived by the rail vehicle 12. It partially seals the air inlet 28 in the device 13.

Dans une variante, la paroi frontale 42 de l'obturateur 36 obture totalement la bouche d'admission 28 de l'air dans le dispositif 13.In a variant, the front wall 42 of the shutter 36 completely closes the air intake mouth 28 in the device 13.

En fonctionnement, l'environnement extérieur soumet le véhicule ferroviaire 12 à un sens de circulation de l'air.In operation, the external environment subjects the rail vehicle 12 to a direction of air circulation.

Une partie de l'air circulant autour du véhicule ferroviaire 12 est captée par le dispositif de captation d'air 13 et s'engouffre dans la conduite 24 sous l'action du déplacement du véhicule.Part of the air circulating around the rail vehicle 12 is captured by the air capture device 13 and rushes into line 24 under the action of the movement of the vehicle.

L'air circulant dans la veine d'air exerce un effort sur la plaque 52.The air circulating in the air stream exerts a force on the plate 52.

L'effort exercé par l'air sur la plaque 52 fait pivoter l'arbre 38, entrainant l'obturateur 36 et les contrepoids 58 dans un mouvement circulaire de balancier autour de l'axe 38.The force exerted by the air on the plate 52 rotates the shaft 38, causing the shutter 36 and the counterweights 58 in a circular pendulum movement around the axis 38.

Le dispositif 13 quitte alors la position de repos définie par l'angle αrepos.The device 13 then leaves the rest position defined by the angle α rest .

Le déplacement angulaire du contrepoids 58 génère un moment de rappel de l'obturateur 36 sur l'arbre 38.The angular displacement of the counterweight 58 generates a moment of return of the shutter 36 on the shaft 38.

L'obturateur 36 trouve une position d'équilibre dans laquelle les efforts exercés sur l'arbre 38 par la circulation de l'air sur le volet d'actionnement 50, l'effort de rappel du contrepoids 58 et les poids du volet d'actionnement 50 et de l'obturateur 36 s'équilibrent.The shutter 36 finds a position of equilibrium in which the forces exerted on the shaft 38 by the circulation of air on the actuating flap 50, the return force of the counterweight 58 and the weights of the flap actuation 50 and shutter 36 are balanced.

L'obturateur 36 obstrue partiellement la bouche d'admission 28 de la conduite d'air 24, régulant le débit d'air dans celle-ci.The shutter 36 partially obstructs the inlet mouth 28 of the air line 24, regulating the air flow therein.

La paroi ventrale bossée 44 de l'obturateur 36 guide l'air depuis la bouche d'admission 30 jusqu'à la section courante de la conduite 24 en assurant un flux d'air laminaire dans la conduite 24.The embossed ventral wall 44 of the shutter 36 guides the air from the inlet mouth 30 to the current section of the pipe 24 while ensuring a laminar air flow in the pipe 24.

Grâce à l'invention, il est possible de réguler un dispositif de captation d'air 13 en débit et présentant un flux d'air non tourmenté à l'orifice de sortie 32 de la conduite 24, par la présence unique de l'obturateur 36 à l'entrée de la conduite 24.Thanks to the invention, it is possible to regulate an air intake device 13 in flow rate and having a non-turbulent air flow at the outlet orifice 32 of the pipe 24, by the unique presence of the shutter 36 at the entrance to line 24.

Claims (8)

  1. An air capture device (13) provided with a device for controlling air flow of the type comprising:
    - an air conduit (24) delimiting an air admission mouth (28) along a circulation direction of the air,
    - an obturator (36) of the air conduit (24), movably mounted relatively to the conduit (24) between a rest position and an at least partial obturation position of the conduit (24),
    - a means (56) for returning the obturator (36) to its rest position,
    - a flap (50) for actuating the obturator (36), providing an exposed wall along the circulation direction of the air,
    characterized in that the actuation flap (50) is outside the air conduit (24).
  2. The air capture device (13) according to claim 1, wherein it includes a cap (40) behind which the obturator (36) is retracted in a rest position.
  3. The air capture device (13) according to any of the preceding claims, wherein the obturator (36) includes at least one humped surface (44).
  4. The air capture device (13) according to any of the preceding claims, wherein it includes legs (15) for supporting the device (13) and the flap (50) comprises a plate (52) positioned between the legs (15).
  5. The air capture device (13) according to any of the preceding claims, wherein the return means (56) includes at least one counterweight (58).
  6. The air capture device (13) according to claim 5, wherein it includes a casing (16) crossed right through by the conduit (24), said or each counterweight (58) being located between the casing (16) and the conduit (24).
  7. The air capture device (13) according to any of the preceding claims, wherein the obturator (36) is movable relatively to the admission mouth (28).
  8. The air capture device (13) according to any of the preceding claims, wherein it includes a protective grid attached facing the admission mouth (28).
EP17152039.8A 2016-01-19 2017-01-18 Air flow control device Active EP3196091B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1650414A FR3046751B1 (en) 2016-01-19 2016-01-19 AIR CAPTATION DEVICE

Publications (2)

Publication Number Publication Date
EP3196091A1 EP3196091A1 (en) 2017-07-26
EP3196091B1 true EP3196091B1 (en) 2020-05-06

Family

ID=55650538

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17152039.8A Active EP3196091B1 (en) 2016-01-19 2017-01-18 Air flow control device

Country Status (3)

Country Link
EP (1) EP3196091B1 (en)
ES (1) ES2804905T3 (en)
FR (1) FR3046751B1 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE519302A (en) * 1952-04-21 1900-01-01
DE102013213664A1 (en) * 2013-07-12 2015-01-15 Siemens Aktiengesellschaft vehicle

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3196091A1 (en) 2017-07-26
FR3046751B1 (en) 2018-02-16
ES2804905T3 (en) 2021-02-09
FR3046751A1 (en) 2017-07-21

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