EP0816774B1 - Apparatus for sealing a ventilation, in particular fire or exhaust damper and method of manufacturing the housing and the damper of the apparatus - Google Patents

Apparatus for sealing a ventilation, in particular fire or exhaust damper and method of manufacturing the housing and the damper of the apparatus Download PDF

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Publication number
EP0816774B1
EP0816774B1 EP97420099A EP97420099A EP0816774B1 EP 0816774 B1 EP0816774 B1 EP 0816774B1 EP 97420099 A EP97420099 A EP 97420099A EP 97420099 A EP97420099 A EP 97420099A EP 0816774 B1 EP0816774 B1 EP 0816774B1
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EP
European Patent Office
Prior art keywords
plate
tunnel
thickness
holes
blade
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP97420099A
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German (de)
French (fr)
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EP0816774A1 (en
Inventor
Roland Mayencon
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Aldes Aeraulique SA
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Aldes Aeraulique SA
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/1406—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by sealing means
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/12—Hinged dampers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/33—Responding to malfunctions or emergencies to fire, excessive heat or smoke
    • F24F11/35—Responding to malfunctions or emergencies to fire, excessive heat or smoke by closing air passages

Definitions

  • the present invention relates to a shutter device a ventilation duct, in particular a fire damper or a damper Smoke.
  • the subject of the invention is a method of manufacturing the tunnel and the blade. of the device.
  • a fire damper has a frame or tunnel which can be mounted as a surface or inside a duct, this rectangular tunnel for mounting a shutter blade likely, in a first position, to be oriented perpendicularly at the opening of the tunnel, to let the air through and, in a second position, to be pivoted to a closed position in order to close the tunnel and therefore the most airtight ventilation duct possible.
  • Different solutions are known to cause the passage of the blade from its open position to its closed position. These solutions will not be discussed, as they do not the subject of the invention.
  • the blade has a shape rectangular, and the tunnel is equipped with positioning stops against which bear on the blade in the closed position. These stops are brought back into the tunnel and fixed by gluing, screwing, riveting, etc. Given the pivoting of the blade, these stops can only be partial, and be offset to allow the support of the blade in position of closing. This results in significant games requiring the presence of complex seals to ensure satisfactory sealing.
  • the seals used are intumescent seals, arranged inside the tunnel, i.e. made from materials capable of swelling under the effect of a rise in temperature.
  • GB 1 418 142 discloses all the features of the preamble to the claim 1.
  • This document relates to a ventilation, in particular of the passenger compartment of an automobile, comprising a opening in the dashboard, in which a annular body.
  • a ring in which is pivotally mounted, around a diametrical axis, a disc shutter.
  • Two 180 ° recesses each open into the two faces of the disc, which correspond to projecting parts that has the ring, and which form stops for the disc while ensuring a tight closure of the duct.
  • Such a device does not pose a problem of realization in synthetic material.
  • the object of the invention is to provide a device for closing off simple structure, made from a small number of parts produced in difficult-to-shape materials, such as materials refractory, and in which the seal at closure can be obtained with a minimum of specific sealing elements.
  • the very structure of the blade and the tunnel respectively allows, in the closed position of the blade, almost a seal perfect, even in the absence of joints, due to the shapes complementary to the blade and the tunnel.
  • the characteristics of the blade and the tunnel allow an easy and precise obtaining of these rooms.
  • the tunnel comprises, in its zones between the ends of the ribs, two coaxial recesses opening opposite forming bearings for the axis of rotation of the blade.
  • two coaxial holes opening into two opposite walls of the thickness of the blade, each intended to receive a pin forming a part of the axis of rotation, shorter than the hole, two lights being provided in a lateral face of the blade, which communicate with the two holes to allow, using a tool, to slide the pins axially in the holes to pass them from a retracted position in the holes to a position engaged in the tunnel recesses or vice versa.
  • seals such as flexible materials or rigid, or intumescent joints, can be used to perfect the seal in the closed position.
  • the fire damper according to one embodiment of the invention comprises a tunnel 2 of square shape, intended to be fixed opposite an opening to be closed, or to the interior of a duct designated by the general reference 3 in FIG. 6.
  • a the interior of this tunnel 2 is pivotally mounted a shutter blade 4 of generally square shape, around an axis arranged at mid-length of the opening 5 which delimits the tunnel.
  • This blade 4 is pivotable between a open position, shown in Figure 1, in which it allows the air passage, and a closed position, in which it is located in the plan of the tunnel opening.
  • the blade 4 is formed by a shaped part parallelepiped, having, on one of its faces, a recess rectangular 6 thick corresponding to half the thickness of the blade, extending along three edges thereof, between two areas of mounting of the blade pivot axis designated by the reference general 7.
  • This rectangular recess 6 extends along three edges of the blade over a length slightly less than half the perimeter of it.
  • This blade comprises, on the other hand, and opening onto its other face, a recess 8 symmetrical with the recess 6 with respect to the axis of rotation of the blade, provided on the other half of the perimeter.
  • the opening of the tunnel has two symmetrical rectangular ribs 9 and 10 from each other with respect to the axis of rotation 7 of the blade 4, and each spanning half the thickness of the tunnel, the distance between the corresponding ends of the two ribs 9 and 10 being substantially equal to the thickness of the blade.
  • the blade 4 is made from two identical elements 4a and 4b, each of thickness corresponding to half the thickness of the blade, and assembled head to tail.
  • the tunnel is also made from two identical elements 2a and 2b, each of thickness corresponding to half the thickness of the tunnel, and assembled head to tail.
  • the tunnel 2 has two coaxial recesses 14 opening into the interior faces of the tunnel. These recesses 14 are used for mounting bearings for the axis.
  • the blade 4 includes, for its part, a bore delimiting two coaxial holes 15a, 15b intended for the mounting of two pins 16a, 16b forming the axis of rotation 7.
  • the length of each of pins 16a, 16b is less than the length of corresponding holes 15a, 15b.
  • the pins can therefore slide to be retracted inside the holes to allow mounting or disassembly of the blade 4.
  • each blade has a light 17 opening into a hole 15a, 15b, and each pin present at the at least one recess 18 allowing it to be actuated in translation by through a tool passing through the light 17.
  • the two pins 16a, 16b are first of all in the retracted position in the holes 15a, 15b.
  • the blade 4 is positioned inside the tunnel 2.
  • the pins are then actuated outwards to be engaged in the recesses 14 in the tunnel.
  • To disassemble the blade proceed conversely.
  • Figure 7 is a perspective view of another valve general circular shape, having the same structure, and in which the same elements are designated by the references of the embodiment Figures 1 to 6, increased by 100.
  • this fire damper ensures excellent sealing properties, however, provision should be made mounting of seals which can be fixed respectively on the tunnel and / or on the blade.
  • valve could have a shape not square but rectangular or circular, or that the invention could relate not to a valve fire stop, but another device for sealing a flue ventilation, such as a smoke exhaust damper.

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  • Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Air-Flow Control Members (AREA)
  • Duct Arrangements (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Lift Valve (AREA)
  • Check Valves (AREA)

Abstract

A shutter consists of a plate (4) which pivots inside a surround (2). The plate is made from two identical halves (4a, 4b), fitted together face to face with overlapping edges, and its surround is made from two rectangular members, each having a thickness equivalent to half the plate and joined together to form stops for the plate edges. In a variant of the design the plate and surround can be circular in shape. The plate has spindles it diametrically-opposite edges which engage with matching holes in the surround and allow the shutter to turn about a central pivot for opening and closing. Seals can be included to make the shutter airtight.

Description

La présente invention a pour objet un dispositif d'obturation d'un conduit de ventilation, notamment clapet coupe-feu ou volet de désenfumage.The present invention relates to a shutter device a ventilation duct, in particular a fire damper or a damper Smoke.

En outre, l'invention a pour objet un procédé de fabrication du tunnel et de la lame du dispositif.Furthermore, the subject of the invention is a method of manufacturing the tunnel and the blade. of the device.

Pour des raisons de sécurité, il est impératif d'équiper les installations de ventilation de clapets coupe-feu afin d'éviter la propagation du feu par les conduits de ventilation, lorsqu'un incendie se déclare à l'intérieur du local ventilé. Un clapet coupe-feu comporte un cadre ou tunnel qui peut être monté en applique ou à l'intérieur d'un conduit, ce tunnel de forme rectangulaire servant au montage d'une lame d'obturation susceptible, dans une première position, d'être orienté perpendiculairement à l'ouverture du tunnel, pour laisser passer l'air et, dans une seconde position, d'être pivoté vers une position de fermeture afin d'obturer le tunnel et par suite le conduit de ventilation de la façon la plus étanche possible. Différentes solutions sont connues pour provoquer le passage de la lame de sa position d'ouverture à sa position de fermeture. Ces solutions ne seront pas évoquées, dans la mesure où elles ne font pas l'objet de l'invention. Généralement, la lame possède une forme rectangulaire, et le tunnel est équipé de butées de positionnement contre lesquelles vient prendre appui la lame en position de fermeture. Ces butées sont rapportées dans le tunnel et fixées par collage, vissage, rivetage, etc. Compte tenu du pivotement de la lame, ces butées ne peuvent être que partielles, et être décalées pour permettre l'appui de la lame en position de fermeture. Il en résulte des jeux importants nécessitant la présence de joints complexes pour assurer une étanchéité satisfaisante. Généralement, les joints utilisés sont des joints intumescents, disposés à l'intérieur du tunnel, c'est-à-dire réalisés à partir de matériaux susceptibles de gonfler sous l'effet d'une élévation de température.For security reasons, it is imperative to equip the ventilation systems for fire dampers to prevent spread fire through the ventilation ducts, when a fire breaks out in inside the ventilated room. A fire damper has a frame or tunnel which can be mounted as a surface or inside a duct, this rectangular tunnel for mounting a shutter blade likely, in a first position, to be oriented perpendicularly at the opening of the tunnel, to let the air through and, in a second position, to be pivoted to a closed position in order to close the tunnel and therefore the most airtight ventilation duct possible. Different solutions are known to cause the passage of the blade from its open position to its closed position. These solutions will not be discussed, as they do not the subject of the invention. Generally, the blade has a shape rectangular, and the tunnel is equipped with positioning stops against which bear on the blade in the closed position. These stops are brought back into the tunnel and fixed by gluing, screwing, riveting, etc. Given the pivoting of the blade, these stops can only be partial, and be offset to allow the support of the blade in position of closing. This results in significant games requiring the presence of complex seals to ensure satisfactory sealing. Usually, the seals used are intumescent seals, arranged inside the tunnel, i.e. made from materials capable of swelling under the effect of a rise in temperature.

Outre leur complexité de réalisation, ces clapets coupe-feu ne permettent pas l'obtention immédiate et simple d'une bonne étanchéité en position de fermeture, notamment à chaud.In addition to their complexity of construction, these fire dampers do not not allow immediate and simple obtaining of a good seal in closed position, especially hot.

Le document GB 1 418 142 divulgue toutes les caractéristiques du préambule de la revendication 1. Ce document concerne un dispositif de ventilation, notamment de l'habitacle d'une automobile, comportant une ouverture ménagée dans le tableau de bord, dans laquelle est monté un corps annulaire. Dans ce corps annulaire est disposé un anneau, dans lequel est monté pivotant, autour d'un axe diamétral, un disque obturateur. Deux évidements ménagés chacun sur 180° débouchent dans les deux faces du disque, qui correspondent à des parties en saillie que comporte l'anneau, et qui forment butées pour le disque tout en assurant une fermeture étanche du conduit. Un tel dispositif, de petites dimensions, ne pose pas de problème de réalisation en matière synthétique.GB 1 418 142 discloses all the features of the preamble to the claim 1. This document relates to a ventilation, in particular of the passenger compartment of an automobile, comprising a opening in the dashboard, in which a annular body. In this annular body is arranged a ring, in which is pivotally mounted, around a diametrical axis, a disc shutter. Two 180 ° recesses each open into the two faces of the disc, which correspond to projecting parts that has the ring, and which form stops for the disc while ensuring a tight closure of the duct. Such a device, of small dimensions, does not pose a problem of realization in synthetic material.

Le but de l'invention est de fournir un dispositif d'obturation de structure simple, réalisé à partir d'un faible nombre de pièces réalisées dans des matériaux difficiles à façonner, tels que des matériaux réfractaires, et dans lequel l'étanchéité à la fermeture puisse être obtenue avec un minimum d'éléments spécifiques d'étanchéité.The object of the invention is to provide a device for closing off simple structure, made from a small number of parts produced in difficult-to-shape materials, such as materials refractory, and in which the seal at closure can be obtained with a minimum of specific sealing elements.

A cet effet, le dispositif d'obturation d'un conduit de ventilation, comprenant

  • un tunnel destiné à être fixé en regard d'une ouverture à obturer,
  • et dans lequel est monté pivotante une lame, autour d'un axe de rotation disposé à mi-longueur de l'ouverture,
  • de telle sorte qu'en position ouverte, la lame est perpendiculaire au plan de l'ouverture,
   dispositif dans lequel :
  • la lame est constituée par une pièce, comportant un perçage délimitant deux trous coaxiaux destinés au montage de deux broches formant l'axe de rotation à mi-longueur et au milieu de son épaisseur,
  • la lame présentant,
    • d'une part, sur l'une de ses faces, un premier évidement rectangulaire d'épaisseur correspondant sensiblement à la moitié de l'épaisseur de la lame, s'étendant le long d'un bord de celle-ci entre les deux trous, sur une longueur légèrement inférieure à la moitié du périmètre et,
    • d'autre part, sur son autre face, un second évidement symétrique du premier par rapport à l'axe de rotation de la lame, et ménagé sur l'autre moitié du périmètre, et
  • l'ouverture du tunnel présentant des dimensions correspondant respectivement à celles de la lame augmentées des jeux fonctionnels, et
  • le tunnel comportant deux nervures rectangulaires symétriques l'une de l'autre par rapport à l'axe de rotation de la lame,
    • et s'étendant chacune sur sensiblement la moitié de l'épaisseur du tunnel qui est elle-même sensiblement égale à l'épaisseur de la lame,
    • la distance entre les extrémités en regard des deux nervures du tunnel étant sensiblement égale à l'épaisseur de la lame,
   est caractérisé en ce que
  • la lame est réalisée à partir de deux éléments identiques, chacun d'épaisseur correspondant à la moitié de l'épaisseur de la lame, et assemblés tête-bêche l'un à l'autre,
  • et/ou le tunnel est réalisé à partir de deux éléments identiques, chacun d'épaisseur correspondant à la moitié de l'épaisseur du tunnel, et assemblés tête-bêche l'un à l'autre.
To this end, the device for closing a ventilation duct, comprising
  • a tunnel intended to be fixed opposite an opening to be closed,
  • and in which a blade is pivotally mounted, about an axis of rotation disposed midway along the opening,
  • so that in the open position, the blade is perpendicular to the plane of the opening,
device in which:
  • the blade is formed by a part, comprising a bore delimiting two coaxial holes intended for the mounting of two pins forming the axis of rotation at mid-length and in the middle of its thickness,
  • the blade presenting,
    • on the one hand, on one of its faces, a first rectangular recess of thickness corresponding substantially to half the thickness of the blade, extending along an edge of the latter between the two holes , over a length slightly less than half the perimeter and,
    • on the other hand, on its other face, a second recess symmetrical with the first with respect to the axis of rotation of the blade, and formed on the other half of the perimeter, and
  • the opening of the tunnel having dimensions corresponding respectively to those of the blade increased by the functional clearances, and
  • the tunnel comprising two rectangular ribs symmetrical to each other with respect to the axis of rotation of the blade,
    • and each extending over substantially half the thickness of the tunnel which is itself substantially equal to the thickness of the blade,
    • the distance between the opposite ends of the two ribs of the tunnel being substantially equal to the thickness of the blade,
is characterized in that
  • the blade is made from two identical elements, each of thickness corresponding to half the thickness of the blade, and assembled head to tail to each other,
  • and / or the tunnel is made from two identical elements, each of thickness corresponding to half the thickness of the tunnel, and assembled head to tail to one another.

La structure même respectivement de la lame et du tunnel permet, en position de fermeture de la lame, une étanchéité quasiment parfaite, même en l'absence de joints, en raison des formes complémentaires de la lame et du tunnel. En outre, les caractéristiques de la lame et du tunnel permettent une obtention facile et précise de ces pièces.The very structure of the blade and the tunnel respectively allows, in the closed position of the blade, almost a seal perfect, even in the absence of joints, due to the shapes complementary to the blade and the tunnel. In addition, the characteristics of the blade and the tunnel allow an easy and precise obtaining of these rooms.

Avantageusement, le tunnel comporte, dans ses zones comprises entre les extrémités des nervures, deux évidements coaxiaux débouchant en vis-à-vis formant paliers pour l'axe de rotation de la lame.Advantageously, the tunnel comprises, in its zones between the ends of the ribs, two coaxial recesses opening opposite forming bearings for the axis of rotation of the blade.

Avantageusement, dans l'épaisseur de la lame sont ménagés deux trous coaxiaux, débouchant dans deux parois opposées de l'épaisseur de la lame, destinés chacun à recevoir une broche formant une partie de l'axe de rotation, de longueur inférieure à celle du trou, deux lumières étant ménagées dans une face latérale de la lame, qui communiquent avec les deux trous pour permettre, à l'aide d'un outil, de faire coulisser axialement les broches dans les trous pour les faire passer d'une position escamotée dans les trous à une position engagée dans les évidements du tunnel ou inversement.Advantageously, in the thickness of the blade are provided two coaxial holes, opening into two opposite walls of the thickness of the blade, each intended to receive a pin forming a part of the axis of rotation, shorter than the hole, two lights being provided in a lateral face of the blade, which communicate with the two holes to allow, using a tool, to slide the pins axially in the holes to pass them from a retracted position in the holes to a position engaged in the tunnel recesses or vice versa.

Différents types de joints, tels que des matériaux souples ou rigides, ou encore des joints intumescents, peuvent être utilisés pour parfaire l'étanchéité en position de fermeture.Different types of seals, such as flexible materials or rigid, or intumescent joints, can be used to perfect the seal in the closed position.

De toute façon, l'invention sera bien comprise à l'aide de la description qui suit, en référence au dessin schématique annexé représentant, à titre d'exemple, deux formes d'exécution de ce dispositif, dans le cas d'un clapet coupe-feu :

  • Figure 1 est une vue en perspective d'un premier clapet en position ouverte ;
  • Figure 2 est une vue d'une plaque de matériau réfractaire à partir de laquelle est réalisé ce clapet ;
  • Figure 3 est une vue de la plaque de figure 2 en cours de découpe ;
  • Figure 4 est une vue en perspective éclatée des principaux éléments constitutifs de ce clapet ;
  • - Figures 5 et 6 en sont deux vues en coupe respectivement selon la ligne V-V de figure 6 et la ligne VI-VI de figure 5;
  • Figure 7 est une vue en perspective d'un second clapet de forme circulaire.
    • Anyway, the invention will be clearly understood with the aid of the description which follows, with reference to the appended schematic drawing representing, by way of example, two embodiments of this device, in the case of a valve. firewall :
  • Figure 1 is a perspective view of a first valve in the open position;
  • Figure 2 is a view of a plate of refractory material from which is made this valve;
  • Figure 3 is a view of the plate of Figure 2 during cutting;
  • Figure 4 is an exploded perspective view of the main components of this valve;
  • - Figures 5 and 6 are two sectional views respectively along the line VV of Figure 6 and the line VI-VI of Figure 5;
  • Figure 7 is a perspective view of a second circular valve.

    • Le clapet coupe-feu selon une forme d'exécution de l'invention, comporte un tunnel 2 de forme carrée, destiné à être fixé en regard d'une ouverture à obturer, ou à l'intérieur d'un conduit désigné par la référence générale 3 à la figure 6. A l'intérieur de ce tunnel 2 est montée pivotante une lame d'obturation 4 de forme générale carrée, autour d'un axe disposé à mi-longueur de l'ouverture 5 que délimite le tunnel. Cette lame 4 est pivotante entre une position d'ouverture, représentée à la figure 1, dans laquelle elle permet le passage d'air, et une position de fermeture, dans laquelle elle est située dans le plan de l'ouverture du tunnel.The fire damper according to one embodiment of the invention comprises a tunnel 2 of square shape, intended to be fixed opposite an opening to be closed, or to the interior of a duct designated by the general reference 3 in FIG. 6. A the interior of this tunnel 2 is pivotally mounted a shutter blade 4 of generally square shape, around an axis arranged at mid-length of the opening 5 which delimits the tunnel. This blade 4 is pivotable between a open position, shown in Figure 1, in which it allows the air passage, and a closed position, in which it is located in the plan of the tunnel opening.

    La lame 4 est constituée par une pièce de forme parallélépipédique, présentant, sur l'une de ses faces, un évidement rectangulaire 6 d'épaisseur correspondant à la moitié de l'épaisseur de la lame, s'étendant le long de trois bords de celui-ci, entre deux zones de montage de l'axe de pivotement de la lame désigné par la référence générale 7. Cet évidement rectangulaire 6 s'étend le long de trois bords de la lame sur une longueur légèrement inférieure à la moitié du périmètre de celle-ci. Cette lame comporte, d'autre part, et débouchant sur son autre face, un évidement 8 symétrique de l'évidement 6 par rapport à l'axe de rotation de la lame, ménagée sur l'autre moitié du périmètre. L'ouverture du tunnel comporte deux nervures rectangulaires 9 et 10, symétriques l'une de l'autre par rapport à l'axe de rotation 7 de la lame 4, et s'étendant chacune sur la moitié de l'épaisseur du tunnel, la distance entre les extrémités correspondantes des deux nervures 9 et 10 étant sensiblement égale à l'épaisseur de la lame.The blade 4 is formed by a shaped part parallelepiped, having, on one of its faces, a recess rectangular 6 thick corresponding to half the thickness of the blade, extending along three edges thereof, between two areas of mounting of the blade pivot axis designated by the reference general 7. This rectangular recess 6 extends along three edges of the blade over a length slightly less than half the perimeter of it. This blade comprises, on the other hand, and opening onto its other face, a recess 8 symmetrical with the recess 6 with respect to the axis of rotation of the blade, provided on the other half of the perimeter. The opening of the tunnel has two symmetrical rectangular ribs 9 and 10 from each other with respect to the axis of rotation 7 of the blade 4, and each spanning half the thickness of the tunnel, the distance between the corresponding ends of the two ribs 9 and 10 being substantially equal to the thickness of the blade.

    Pour obtenir cette structure, la lame 4 est réalisée à partir de deux éléments 4a et 4b identiques, chacun d'épaisseur correspondant à la moitié de l'épaisseur de la lame, et assemblés tête-bêche l'un à l'autre. Le tunnel est également réalisé à partir de deux éléments identiques 2a et 2b, chacun d'épaisseur correspondant à la moitié de l'épaisseur du tunnel, et assemblés tête-bêche l'un à l'autre. Dans ces conditions, la fabrication de ce clapet est très simple, dans la mesure où il est possible, si le clapet est réalisé en un matériau réfractaire, de partir d'une plaque parallélépipédique 12, possédant les dimensions extérieures du clapet et une épaisseur égale à la moitié de l'épaisseur du clapet. Il est procédé à une découpe 13 simultanée de la plaque dans toute son épaisseur pour former une demi-lame 4a, 4b et un demi-tunnel 2a et 2b, la découpe 13 délimitant deux zones 13a, 13b de largeurs différentes. Il est ainsi possible d'obtenir des éléments 2a, 2b, 4a, 4b qu'il convient ensuite d'assembler tête-bêche deux à deux. Il est également possible de partir de plaques de plus grandes dimensions d'épaisseur, égale à la moitié de l'épaisseur du tunnel et de la lame, et dans lesquelles sont découpées, suivant les dimensions, et dans un souci d'optimisation, plusieurs tunnels et plusieurs lames.To obtain this structure, the blade 4 is made from two identical elements 4a and 4b, each of thickness corresponding to half the thickness of the blade, and assembled head to tail. The tunnel is also made from two identical elements 2a and 2b, each of thickness corresponding to half the thickness of the tunnel, and assembled head to tail. Under these conditions, the manufacture of this valve is very simple, as far as possible, if the valve is made of a refractory material, from a parallelepiped plate 12, having the external dimensions of the valve and an equal thickness at half the thickness of the valve. It is cut 13 simultaneous of the plate in its entire thickness to form a half-blade 4a, 4b and a half-tunnel 2a and 2b, the cutout 13 delimiting two zones 13a, 13b of different widths. It is thus possible to obtain elements 2a, 2b, 4a, 4b which must then be assembled head to tail two by two. It is also possible to start from more plates large thickness dimensions, equal to half the thickness of the tunnel and of the blade, and from which are cut, according to the dimensions, and for the sake of optimization, several tunnels and several blades.

    Le tunnel 2 comporte deux évidements coaxiaux 14 débouchant dans les faces intérieures du tunnel. Ces évidements 14 servent au montage de paliers pour l'axe. La lame 4 comprend, pour sa part, un perçage délimitant deux trous coaxiaux 15a, 15b destinés au montage de deux broches 16a, 16b formant l'axe de rotation 7. La longueur de chacune des broches 16a, 16b est inférieure à la longueur des trous 15a, 15b correspondants. Les broches peuvent donc coulisser pour être escamotées à l'intérieur des trous en vue de permettre le montage ou le démontage de la lame 4. A cet effet, chaque lame présente une lumière 17 débouchant dans un trou 15a, 15b, et chaque broche présente au moins un évidement 18 permettant son actionnement en translation par l'intermédiaire d'un outil traversant la lumière 17. En pratique, les deux broches 16a, 16b se trouvent tout d'abord en position escamotée dans les trous 15a, 15b. La lame 4 est positionnée à l'intérieur du tunnel 2. Les broches sont alors actionnées vers l'extérieur pour être engagées dans les évidements 14 du tunnel. Pour démonter la lame, il convient de procéder de façon inverse.The tunnel 2 has two coaxial recesses 14 opening into the interior faces of the tunnel. These recesses 14 are used for mounting bearings for the axis. The blade 4 includes, for its part, a bore delimiting two coaxial holes 15a, 15b intended for the mounting of two pins 16a, 16b forming the axis of rotation 7. The length of each of pins 16a, 16b is less than the length of corresponding holes 15a, 15b. The pins can therefore slide to be retracted inside the holes to allow mounting or disassembly of the blade 4. For this purpose, each blade has a light 17 opening into a hole 15a, 15b, and each pin present at the at least one recess 18 allowing it to be actuated in translation by through a tool passing through the light 17. In practice, the two pins 16a, 16b are first of all in the retracted position in the holes 15a, 15b. The blade 4 is positioned inside the tunnel 2. The pins are then actuated outwards to be engaged in the recesses 14 in the tunnel. To disassemble the blade, proceed conversely.

    La figure 7 est une vue en perspective d'un autre clapet de forme générale circulaire, possédant la même structure, et dans lequel les mêmes éléments sont désignés par les références de la forme d'exécution des figures 1 à 6, augmentées de 100.Figure 7 is a perspective view of another valve general circular shape, having the same structure, and in which the same elements are designated by the references of the embodiment Figures 1 to 6, increased by 100.

    Quoique la structure de ce clapet coupe-feu assure d'excellentes propriétés d'étanchéité, il convient toutefois de prévoir le montage de joints qui peuvent être fixés respectivement sur le tunnel et/ou sur la lame. Although the structure of this fire damper ensures excellent sealing properties, however, provision should be made mounting of seals which can be fixed respectively on the tunnel and / or on the blade.

    Comme il va de soi, l'invention ne se limite pas à la seule forme d'exécution de ce clapet coupe-feu décrite ci-dessus à titre d'exemple. C'est ainsi notamment que le clapet pourrait avoir une forme non pas carrée mais rectangulaire ou circulaire, ou encore que l'invention pourrait concerner non pas un clapet coupe-feu, mais un autre dispositif d'obturation d'un conduit de ventilation, tel qu'un volet de désenfumage.It goes without saying that the invention is not limited to the single form of execution of this fire damper described above by way of example. This is how in particular the valve could have a shape not square but rectangular or circular, or that the invention could relate not to a valve fire stop, but another device for sealing a flue ventilation, such as a smoke exhaust damper.

    Claims (5)

    1. Shutter device for a ventilation duct comprising:
      a tunnel (2) meant to be placed facing an opening to be shut,
      and in which is fitted a plate (4) which pivots about a rotation axis (7) placed halfway along the opening,
      in such a way that, in the open position, the plate is perpendicular to the plane of the opening,
      a device wherein:
      the plate (4) is made up of a part having a drilling which demarcates two concentric holes (15a, 15b) intended for mounting two spindles (16a, 16b) forming the rotation axis (7) halfway along and in the middle of its thickness,
      the plate (4) having:
      on the one hand, on one of its surfaces, a first rectangular recess (6) with a thickness substantially corresponding to half the thickness of the plate, extending along one edge of the latter between the two holes (15a, 15b) over a length slightly less than half of the perimeter, and
      on the other hand, on its other surface, a second recess (8) symmetrical with the first in relation to the rotation axis of the plate and provided on the other half of the perimeter, and
      the opening (5) of the tunnel having measurements which respectively correspond to those of the plate (4) increased by operating clearances, and
      the tunnel (2) comprising two rectangular ribs (9, 10) symmetrical the one with the other in relation to the rotation axis (7) of the plate,
      and each extending over substantially half the thickness of the tunnel which is itself substantially equal to the thickness of the plate,
      the distance between the ends facing the two ribs (9, 10) of the tunnel being substantially equal to the thickness of the plate,
      is characterised in that:
      the plate (4) is made from two identical elements (4a, 4b), each with a thickness corresponding to half the thickness of the plate and fitted to one another head to tail,
      and/or the tunnel (2) is made from two identical elements (2a, 2b), each having a thickness corresponding to half the thickness of the tunnel and fitted to one another head to tail.
    2. Device according to claim 1, characterised in that the tunnel (2) comprises, in its areas located between the ends of the ribs (9, 10), two coaxial recesses (14) which open out opposite each other, forming bearings for the rotation axis of the plate.
    3. Device according to claim 2, characterised in that in the thickness of the plate (4), two coaxial holes (15a, 15b) are provided opening out in the two opposite thickness surfaces of the plate, each meant to receive a spindle (16a, 16b) forming a part of the rotation axis (7), with a length less than that of the hole, two ports (17) being provided in a lateral surface of the plate (4) which communicate with the two holes (15a, 15b) to make it possible, with the help of a tool, to make the spindles (16a, 16b) slide axially in the holes to cause them to move from a retracted position in the holes to a position inserted in the recesses (14) of the tunnel, or vice versa.
    4. Device according to any of claims 1 to 3, characterised in that it comprises seals.
    5. Method of manufacturing the tunnel (2) and the plate (4) of the shutter device of a ventilation duct according to claim 1, characterised in that it consists, starting from two plates (12) of refractory material having external measurements corresponding to those of the tunnel and a thickness corresponding to half that of the plate, in making a cutting (13) of the two plates in their entire thickness to form two half plates and two half tunnels, the cutting comprising two successive areas (13a, 13b) of different widths, then assembling head to tail the two half tunnels and the two half plates in order to obtain respectively the tunnel and the plate.
    EP97420099A 1996-06-24 1997-06-24 Apparatus for sealing a ventilation, in particular fire or exhaust damper and method of manufacturing the housing and the damper of the apparatus Expired - Lifetime EP0816774B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    FR9608148A FR2750200B1 (en) 1996-06-24 1996-06-24 DEVICE FOR SEALING A VENTILATION DUCT, IN PARTICULAR A FIRE-RESISTANT VALVE OR SMOKE FLAP
    FR9608148 1996-06-24

    Publications (2)

    Publication Number Publication Date
    EP0816774A1 EP0816774A1 (en) 1998-01-07
    EP0816774B1 true EP0816774B1 (en) 2002-04-03

    Family

    ID=9493575

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP97420099A Expired - Lifetime EP0816774B1 (en) 1996-06-24 1997-06-24 Apparatus for sealing a ventilation, in particular fire or exhaust damper and method of manufacturing the housing and the damper of the apparatus

    Country Status (7)

    Country Link
    EP (1) EP0816774B1 (en)
    AT (1) ATE215683T1 (en)
    DE (1) DE69711501T2 (en)
    ES (1) ES2172756T3 (en)
    FR (1) FR2750200B1 (en)
    HK (1) HK1007900A1 (en)
    PT (1) PT816774E (en)

    Families Citing this family (7)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US6991536B2 (en) 2000-12-01 2006-01-31 Kent Tooling And Components Limited Air flow controller and fire damper in an air flow duct
    GB0029381D0 (en) * 2000-12-01 2001-01-17 Tri Air Innovations Ltd Air flow controller and fire damper in air flow duct
    FR2843032B1 (en) * 2002-08-02 2005-01-21 Aldes Aeraulique DEVICE FOR FILLING A VENTILATION PIPE, IN PARTICULAR A FIREWALL CLUTCH OR A DISENGAGING PIPE
    DE20314559U1 (en) * 2003-09-19 2003-12-04 Bbh Betriebseinrichtungen Ag Electrically powered fire damper
    IT1391497B1 (en) * 2008-10-28 2011-12-23 Mp3 S R L FIRE RESISTANT DAMPER WITH HOUSINGS FOR THE PIN MADE FROM THE UNION OF TWO TUBULAR ELEMENTS AND ASSEMBLY METHOD OF THE ABOVE SHUTTER CUTTER
    BE1018315A5 (en) 2009-04-06 2010-08-03 Rf Technologies Nv FIRE-RESISTANT VENTILATION VALVE.
    FR2994990B1 (en) * 2012-08-31 2014-08-29 Atlantic Climatisation Et Ventilation DESENFUMING COMPONENT

    Family Cites Families (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB1418142A (en) * 1973-03-12 1975-12-17 Smiths Industries Ltd Ventilators
    US4372197A (en) * 1980-11-14 1983-02-08 Acme Engineering & Manufacturing Corporation Cold weather inlet for ventilating systems
    FR2504233A1 (en) * 1981-04-21 1982-10-22 Alsthom Cgee Butterfly valve for duct - has helical periphery and valve seat for air tight seal

    Also Published As

    Publication number Publication date
    FR2750200B1 (en) 1998-08-07
    EP0816774A1 (en) 1998-01-07
    HK1007900A1 (en) 1999-04-30
    FR2750200A1 (en) 1997-12-26
    ATE215683T1 (en) 2002-04-15
    DE69711501D1 (en) 2002-05-08
    DE69711501T2 (en) 2002-10-31
    ES2172756T3 (en) 2002-10-01
    PT816774E (en) 2002-07-31

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