EP0098211A1 - Casing with an automatically operated flap for a duct such as a fire-place flue gas duct - Google Patents

Casing with an automatically operated flap for a duct such as a fire-place flue gas duct Download PDF

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Publication number
EP0098211A1
EP0098211A1 EP83401295A EP83401295A EP0098211A1 EP 0098211 A1 EP0098211 A1 EP 0098211A1 EP 83401295 A EP83401295 A EP 83401295A EP 83401295 A EP83401295 A EP 83401295A EP 0098211 A1 EP0098211 A1 EP 0098211A1
Authority
EP
European Patent Office
Prior art keywords
valve
axis
jack
carriage
sliding element
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.)
Withdrawn
Application number
EP83401295A
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German (de)
French (fr)
Inventor
André Lacour
Gilbert André Dufois
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sebico Ste
Original Assignee
Sebico Ste
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Filing date
Publication date
Application filed by Sebico Ste filed Critical Sebico Ste
Publication of EP0098211A1 publication Critical patent/EP0098211A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B1/00—Stoves or ranges
    • F24B1/18—Stoves with open fires, e.g. fireplaces
    • F24B1/185—Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion
    • F24B1/189—Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion characterised by air-handling means, i.e. of combustion-air, heated-air, or flue-gases, e.g. draught control dampers 
    • F24B1/1895—Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion characterised by air-handling means, i.e. of combustion-air, heated-air, or flue-gases, e.g. draught control dampers  flue-gas control dampers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L11/00—Arrangements of valves or dampers after the fire
    • F23L11/005—Arrangements of valves or dampers after the fire for closing the flue during interruption of burner function
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2213/00—Chimneys or flues
    • F23J2213/50—Top cover

Definitions

  • the subject of the invention is a sheath intended especially but not exclusively to be placed between the outlet of the chimney of the chimneys and the first bushel of the flue.
  • valve mounted at this point pivoting about a horizontal axis between a closed position and an open position of the draft.
  • This valve and its axis are installed either directly in the masonry at the birth of the flue after the drain, or in a simple metal frame embedded in the masonry.
  • This classic valve is manually operated for opening and closing. However, for obvious safety reasons, the valve should only be closed when the fire is completely out. Since, after a vigil, the fire actually only goes out during the night, there is a tendency to leave the valve open so that, after the fire has gone out, the hot air from the room is evacuated through the chimney and that the cold morning air enters very easily.
  • the main object of the invention is to provide a valve sheath whose valve can be operated by hand if desired, but can also operate automatically upon opening and especially upon closing; in other words, the valve of a sheath according to the invention is automatically put in the closed position when the fire has gone out in the hearth or as soon as it has cooled considerably to the point of extinguishing soon.
  • a sheath according to the invention comprises a frame designed to contain and guide in rotation the end parts of an axis to which a closing valve is fixed; a housing is provided on at least one side of this frame outside the volume swept by the valve; an automatic control device comprising a cylinder sensitive to heat against the action of a return spring is disposed in this housing and coupled with an end part of the axis of the valve in order to pivot the latter in the direction of opening as a result of heating and in the direction of closing as a result of cooling.
  • Any heat-sensitive cylinder sufficiently expandable when it is heated, can be used in a sheath according to the invention.
  • An example of such a heat-sensitive cylinder can be found in this sheath, referring to the 1st French addition certificate No. 81 13404. But other cylinders may also be suitable as is will show further.
  • the sheath of the invention comprises two frames with combined geometric axes, spaced in an axial direction, and cooperating with each other so as to limit between them an annular, rectangular volume, one of the sides of which constitutes the housing of the automatic control device.
  • One of the frames preferably the lower frame in the position of use of the sheath, is used for mounting the valve; it is advantageous to choose as the housing of the control device one of the sides of the annular volume where one of the extreme parts of the axis of the valve is located.
  • This end part of the axis has a non-revolution profile and it is coupled, by simple interlocking, with a rotary bar, at least one wing of which is engaged in a slot of a sliding element. The latter is pushed in the direction of opening of the valve by the heat-sensitive cylinder and in the direction of closing of the valve by the return spring.
  • the sliding element is provided with a cable making it possible to pull it to its valve opening position when the jack is not heated.
  • a means for locking the valve in the open position when the sliding element has been moved using the cable and it is also provided, in an exemplary embodiment of the invention, that the heat-sensitive cylinder has a greater stroke -to- the opening stroke of the valve, which allows it to make inactive the locking means so that, during cooling, the sliding element closes the valve.
  • the automatic control device comprises a sliding carriage on which is mounted and guided in movement the sliding element.
  • This last element has a slot in which is engaged a wing of the operating bar of the valve axis; it is connected to the smoothing carriage q by a spring and a locking actuator actuated by a spring is arranged between the carriage and the sliding element to lock the latter relative to the carriage, when this element occupies its valve opening position.
  • the sliding carriage is provided at one end with a traction cable and at the opposite end it is pressed against a cylinder sensitive to heat under the effect of a return spring.
  • This carriage has a stroke greater than that of the sliding element when it is pushed by the jack which heats up and, during this stroke, it pushes the locking pallet to a rest position, so that, during the cooling of the cylinder, the return spring returns the carriage and the sliding element to their rest position which corresponds to the closing of the valve.
  • a sheath 1 comprises a first frame 2 in which a valve 3 is pivotally mounted about an axis 4 between a closed position ( Figure 1) and an open position ( Figure 2).
  • This sheath 1 further comprises a second frame 5 identical to the frame 2 and spaced from the latter in an axial direction along their common geometrical axis, so as to form between them a volume 6.
  • a volume 6 In FIGS. 1 and 2 one of the short sides of the second frame 5 is torn off to show the volume 6. The latter is open on the passage where the valve 3 is located.
  • the two frames 2 and 5 are superimposed and rest on each other by their outer peripheral edge 7.
  • the latter is mounted, for sliding, inside a fixed guide body 14 and it is subjected on the one hand to the thrust d 'a cylinder 15 sensitive to heat which moves it to a position in which the bar 10 puts the valve 3 in the open position, on the other hand to the opposing force of a return spring 16 which tends to bring this element sliding 13 to a position in which the bar 10 puts the valve 3 in the closed position.
  • a cable 17 is attached to the sliding element 13 either directly as in the example in FIGS. 5 to 7, or indirectly as in the example in FIGS. 3 and 4, so that one can, by pulling by hand on this cable 17, put the valve 3 in the open position.
  • FIGS. 3 and 4 describe a preferred embodiment of a device 8 for automatic control of the valve 3.
  • the fixed body 14 has two opposite side walls 14A, 14B between which the axis 9 is supported so that it can rotate at least 90 °.
  • a first pair of 18 of longitudinal guide grooves and a second pair 19 of longitudinal grooves are hollowed out; these two pairs 18 and 19 are spaced apart from each other in the longitudinal direction.
  • the grooves 18, 19 serve to guide in sliding a sliding carriage 20 which has one end 21 to which the cable 17 is attached and to which is hooked one end of the return spring 16.
  • the other end of this spring 16 is hooked to the fixed body 14.
  • the second end 22 of the carriage 20 is pressed by the effect of the spring 16 against a sensitive jack 15. heat. composed of two units mounted in series and supported by the fixed body 14.
  • a transverse axis 26 around which is freely rotatably mounted a locking pallet 27 which has a first end 27A intended to meet a stop face 13A provided on the sliding element 13.
  • the pallet 27 has a second end 27B intended to be encountered and pushed back by a cam 28 provided on a longitudinal wall 29 which forms part of the carriage 20.
  • a return spring 30 wound around the axis 26 applies the first end 27A against the element 13 .
  • the jack 15 In the rest position of the device described here, visible in FIGS. 3 and 4, the jack 15 is in the state of retraction and the springs 16 and 25 retain the sliding carriage 20 and the sliding element 13 at the end of their close travel. of the jack 15.
  • a wing 10A of the bar 10 is engaged dans.la slot 12 of sliding isolation 13, the valve 3 being in the closed position.
  • a fixed transverse pin 31 which serves as a stop for the bar 10 when the latter has pivoted sufficiently in the clockwise direction indicated by an arrow F in FIG. 4 so that the valve 3 found in its fully open position.
  • the slot 12 has an end portion 12A enlarged to the dimension of the bar 10 with an end face inclined according to the position thereof which corresponds to the closing of the flap. Then a ramp 12B acts during the movement of the element 13 on a wing 10A to rotate the bar 10 and put it in the open position of the flap 3, after which the slot 12 has an elongated part 12C narrowed in width to l size of the bar 10 after pivoting 90 °. The narrowed portion 12C maintains over its entire length the bar 10 and the flap 3 in the open position.
  • the jack 15 is chosen to produce this effect of automatic opening of the valve 3 when the temperature in the sheath 1 goes from 25 ° to 35 ° C.
  • the shutter 3 can be opened manually by acting on the cable 17 to which is attached a chain 32 provided with a handle 33 ( Figures 1 and 2).
  • the sliding element 13 is moved directly and the slot 12 causes the flap 3 to open by its profile.
  • the cylinder 1 5 holds the element 13 and moves it even further by heating up further, the valve 3 being held in the open state.
  • traction on the cable 17 causes the carriage 20 and the the element 13 by means of the springs 25 until the cam 28 meets the end 27B of the locking pallet 27 whose end 27A then has the possibility of pivoting and of being placed in front of the face of stop 13A of the element 13.
  • the cable 17 can be released; the valve 3 remains in the open state since the sliding element 13 cannot go back because of the locking pallet 27 which retains it.
  • the jack 15 heats up, it meets the carriage 20 and pushes it beyond this position while the springs 25 are elongating and the grooves 23, 24 slide relative to the element 13. During this movement the cam 28 exceeds the branch 27B.
  • the spring 16 is a compression spring which relaxes; when the inclined face of the end part 12A meets a wing 10A of the bar 10, it rotates it by 90 ° and closes the valve 3.
  • the spring 16 is a tension spring which tightens; when the sliding element 13 is encountered and driven by the terminal end of the grooves 23, 24, the cam 28 meets the branch 27B of the pallet 27 and it pivots the latter against its return spring 30 in a direction which moves the l opposite end 27A of the sliding element 13. The latter therefore accompanies the carriage 20 to its initial position visible in FIG. 4, by closing the valve 3.
  • the sheath of the invention is not limited to the preferred use. which has been described above. We can install it. sheath of the invention in any gas passage duct which must be able to circulate freely in the event of a rise in temperature, such as in horticultural greenhouses during sunshine hours, or in the garbage can sheaths in the event of heating, or in the flue gas exhaust flues in case of fire. etc ..., the sheath having the advantage of closing the conduit after cooling, which is particularly useful not only in greenhouses but in most uses.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Mechanically-Actuated Valves (AREA)

Abstract

The casing comprises a first frame (2), in which the customary flap (3) is mounted pivotably about an axis (4) and a second frame (5) at a distance from the first in the axial direction in order to limit with it a rectangular annular volume (6) which is open to the passage of the flue gases and serves as housing for a device (8) for automatic operation of the flap (3), this device (8) comprising a heat-sensitive jack (15) associated with a return spring for opening the flap (3) when it heats up and to close it when it cools down as soon as the fire goes out in the hearth.

Description

Gaine avec clapet à commande automatique pour conduit tel que conduit de fumée des cheminées à âtres.Duct with automatic control valve for flue such as chimney for chimneys with hearths.

L'invention a pour objet une gaine destinée spécialement mais non exclusivement à être placée entre la sortie de l'avaloir des cheminées à âtre et le premier boisseau du conduit de fumée.The subject of the invention is a sheath intended especially but not exclusively to be placed between the outlet of the chimney of the chimneys and the first bushel of the flue.

Dans les cheminées classiques, il existe à cet endroit un clapet monté pivotant autour d'un axe horizontal entre une position de fermeture et une position d'ouverture du tirage. Ce clapet et son axe sont installés soit directement dans la maçonnerie à la naissance du conduit de fumée après l'avaloir, soit dans un simple cadre métallique noyé dans la maçonnerie.In conventional chimneys, there is a valve mounted at this point pivoting about a horizontal axis between a closed position and an open position of the draft. This valve and its axis are installed either directly in the masonry at the birth of the flue after the drain, or in a simple metal frame embedded in the masonry.

Ce clapet classique est manoeuvré manuellement pour son ouverture et pour sa fermeture. Or, pour des raisons évidentes de sécurité, on ne doit fermer le clapet que lorsque le feu est complètement éteint. Comme, après une veillée, le feu ne s'éteint en réalité que pendant la nuit, on a tendance à laisser le clapet ouvert de sorte que, après extinction du feu, l'air chaud de la pièce est évacué par la cheminée et que l'air froid du matin y pénètre très facilement.This classic valve is manually operated for opening and closing. However, for obvious safety reasons, the valve should only be closed when the fire is completely out. Since, after a vigil, the fire actually only goes out during the night, there is a tendency to leave the valve open so that, after the fire has gone out, the hot air from the room is evacuated through the chimney and that the cold morning air enters very easily.

L'invention a pour but principal d'apporter une gaine à clapet dont le clapet peut être manoeuvré à la main si on le désire, mais peut aussi fonctionner automatiquement à l'ouverture et surtout à la fermeture ; autrement dit, le clapet d'une gaine conforme à l'invention est mis automatiquement en position de fermeture quand le feu s'est éteint dans l'âtre ou dès qu'il s'est fortement refroidi au point de s'éteindre prochainement.The main object of the invention is to provide a valve sheath whose valve can be operated by hand if desired, but can also operate automatically upon opening and especially upon closing; in other words, the valve of a sheath according to the invention is automatically put in the closed position when the fire has gone out in the hearth or as soon as it has cooled considerably to the point of extinguishing soon.

Une gaine conforme à l'invention comprend un cadre conçu pour contenir et guider en rotation les parties extrêmes d'un axe auquel est fixé un clapet de fermeture ; un logement est ménagé sur un côté au moins de ce cadre en dehors du volume balayé par le clapet ; un dispositif de commande automatique comprenant un vérin sensible à la chaleur contre l'action d'un ressort de rappel est disposé dans ce logement et accouplé avec une partie extrême de l'axe du clapet afin de faire pivoter ce dernier dans le sens de l'ouverture par suite d'un échauffement et dans le sens de la fermeture par suite d'un refroidissement.A sheath according to the invention comprises a frame designed to contain and guide in rotation the end parts of an axis to which a closing valve is fixed; a housing is provided on at least one side of this frame outside the volume swept by the valve; an automatic control device comprising a cylinder sensitive to heat against the action of a return spring is disposed in this housing and coupled with an end part of the axis of the valve in order to pivot the latter in the direction of opening as a result of heating and in the direction of closing as a result of cooling.

Tout vérin sensible à la chaleur, suffisamment expensible quand il est échauffé, peut être utilisé dans une gaine conforme à l'invention. On trouvera un exemple d'un tel vérin sensible à la chaleur, et pouvant servir dans la présente gaine, en se reportant au 1er certificat d'addition français N° 81 13404. Mais d'autres vérins peuvent convenir aussi ainsi qu'on le montrera plus loin.Any heat-sensitive cylinder, sufficiently expandable when it is heated, can be used in a sheath according to the invention. An example of such a heat-sensitive cylinder can be found in this sheath, referring to the 1st French addition certificate No. 81 13404. But other cylinders may also be suitable as is will show further.

De préférence, la gaine de l'invention comprend deux cadres à axes géométriques confondus, espacés en sens axial, et coopérant l'un avec l'autre de façon à limiter entre eux un volume annulaire, rectangulaire, dont l'un des côtés constitue le logement du dispositif de commande automatique.Preferably, the sheath of the invention comprises two frames with combined geometric axes, spaced in an axial direction, and cooperating with each other so as to limit between them an annular, rectangular volume, one of the sides of which constitutes the housing of the automatic control device.

L'un des cadres, de préférence le cadre inférieur en position d'utilisation de la gaine, sert au montage du clapet ; il est avantageux de choisir comme logement du dispositif de commande un des côtés du volume annulaire où se trouve une des parties extrêmes de l'axe du clapet.One of the frames, preferably the lower frame in the position of use of the sheath, is used for mounting the valve; it is advantageous to choose as the housing of the control device one of the sides of the annular volume where one of the extreme parts of the axis of the valve is located.

Cette partie extrême de l'axe a un profil non de révolution et elle est accouplée, par simple emboîtement, avec une barrette tournante dont une aile au moins est engagée dans une fente d'un élément coulissant. Ce dernier est poussé dans le sens de l'ouverture du clapet par le vérin sensible à la chaleur et dans le sens de la fermeture du clapet par le ressort de rappel.This end part of the axis has a non-revolution profile and it is coupled, by simple interlocking, with a rotary bar, at least one wing of which is engaged in a slot of a sliding element. The latter is pushed in the direction of opening of the valve by the heat-sensitive cylinder and in the direction of closing of the valve by the return spring.

De préférence, l'élément coulissant est muni d'un câble permettant de le tirer à sa position d'ouverture du clapet quand le vérin n'est pas échauffé.Preferably, the sliding element is provided with a cable making it possible to pull it to its valve opening position when the jack is not heated.

De préférence encore, il est prévu un moyen de verrouillage du clapet en position d'ouverture quand l'élément coulissant a été déplacé à l'aide du câble et il est prévu aussi, dans un exemple de réalisation de l'invention, que le vérin sensible à la chaleur possède une course supérieure -à- la course d'ouverture du clapet, ce qui lui permet de rendre inactif le moyen de verrouillage afin que, pendant le refroidissement l'élément coulissant referme le clapet.More preferably, there is provided a means for locking the valve in the open position when the sliding element has been moved using the cable and it is also provided, in an exemplary embodiment of the invention, that the heat-sensitive cylinder has a greater stroke -to- the opening stroke of the valve, which allows it to make inactive the locking means so that, during cooling, the sliding element closes the valve.

Selon un mode préféré de réalisation de l'invention, le dispositif de commande automatique comprend un chariot glissant sur lequel est monté et guidé en déplacement l'élément coulissant. Ce dernier élément présente une fente dans laquelle est engagée une aile de la barrette de manoeuvre de l'axe du clapet ; il est relié au chariot qlissant par un ressort et une palette de verrouillage actionnée par un ressort est disposée entre le chariot et l'élément coulissant pour verrouiller ce dernier par rapport au chariot, quand cet élément occupe sa position d'ouverture du clapet. De plus, le chariot glissant est muni à une extrémité d'un câble de traction et à l'extrémité opposée il est appuyé contre un vérin sensible à la chaleur sous l'effet d'un ressort de rappel. Ce chariot a une course supérieure à celle de l'élément coulissant quand il est poussé par le vérin qui s'échauffe et, pendant cette course, il repousse la palette de verrouillage à une position de repos, de sorte que, pendant le refroidissement du vérin, le ressort de rappel ramène le chariot et 'l'élément coulissant à leur position de repos qui correspond à la fermeture du clapet.According to a preferred embodiment of the invention, the automatic control device comprises a sliding carriage on which is mounted and guided in movement the sliding element. This last element has a slot in which is engaged a wing of the operating bar of the valve axis; it is connected to the smoothing carriage q by a spring and a locking actuator actuated by a spring is arranged between the carriage and the sliding element to lock the latter relative to the carriage, when this element occupies its valve opening position. In addition, the sliding carriage is provided at one end with a traction cable and at the opposite end it is pressed against a cylinder sensitive to heat under the effect of a return spring. This carriage has a stroke greater than that of the sliding element when it is pushed by the jack which heats up and, during this stroke, it pushes the locking pallet to a rest position, so that, during the cooling of the cylinder, the return spring returns the carriage and the sliding element to their rest position which corresponds to the closing of the valve.

On donnera maintenant uniquement à titre d'exemple, et sans intention limitative, une description d'un mode préféré de réalisation de l'invention et d'une variante du dispositif de commande automatique. On se reportera aux dessins annexés dans lesquels :

  • -la figure 1 est une vue de dessus en perspective, avec une partie arrachée, d'une gaine conforme à l'invention, le clapet étant en position de fermeture,
  • - la figure 2 est une vue analogue à la précédente avec le clapet en position d'ouverture,
  • - la figure 3 est une vue agrandie du dispositif de manoeuvre automatique du clapet monté dans la gaine des figures 1 et 2,
  • - la figure 4 est une vue de côté du dispositif de la figure 3,
  • - la figure 5 est une vue en coupe longitudinale d'une variante du dispositif de manoeuvre selon l'invention,
  • - les figures 6 et 7 sont des vues analogues à la figure 5, montrant le dispositif de manoeuvre à deux positions différentes de fonctionnement .
A description will now be given only by way of example, and without limitation, of a preferred embodiment of the invention and of a variant of the automatic control device. Reference is made to the appended drawings in which:
  • FIG. 1 is a perspective view from above, with a part cut away, of a sheath according to the invention, the valve being in the closed position,
  • FIG. 2 is a view similar to the previous one with the valve in the open position,
  • FIG. 3 is an enlarged view of the device for automatically operating the valve mounted in the sheath of FIGS. 1 and 2,
  • FIG. 4 is a side view of the device in FIG. 3,
  • FIG. 5 is a view in longitudinal section of a variant of the operating device according to the invention,
  • - Figures 6 and 7 are views similar to Figure 5, showing the operating device at two different operating positions.

Une gaine 1 conforme à l'invention comprend un premier cadre 2 dans lequel un clapet 3 est monté pivotant autour d'un axe 4 entre une position de fermeture (figure 1) et une position d'ouverture (figure 2). Cette gaine 1 comprend encore un second cadre 5 identique au cadre 2 et espacé de ce dernier en sens axial le long de leur axe géométrique commun, de manière à ménager entre eux un volume 6. Sur les figures 1 et 2 un des petits côtés du second cadre 5 est arraché pour montrer le volume 6. Ce dernier est ouvert sur le passage où se trouve le clapet 3. Les deux cadres 2 et 5 sont superposés et reposent'l'un sur l'autre par leur bord périphérique extérieur 7.A sheath 1 according to the invention comprises a first frame 2 in which a valve 3 is pivotally mounted about an axis 4 between a closed position (Figure 1) and an open position (Figure 2). This sheath 1 further comprises a second frame 5 identical to the frame 2 and spaced from the latter in an axial direction along their common geometrical axis, so as to form between them a volume 6. In FIGS. 1 and 2 one of the short sides of the second frame 5 is torn off to show the volume 6. The latter is open on the passage where the valve 3 is located. The two frames 2 and 5 are superimposed and rest on each other by their outer peripheral edge 7.

De cette façon, on obtient une gaine facile à construire et à mettre en place au-dessus de l'avaloir d'une cheminée ; en même temps on dispose d'un volume 6 dans lequel on trouve facilement un logement pour un dispositif 8 de manoeuvre automatique du clapet 3, du c8té droit ou.. gauche. Il est évident que la gaine 1 pourrait être constituée d'une autre manière pour présenter un logement destiné à recevoir le dispositif 8 ; l'existence d'un volume annulaire rectangulaire 6 n'est pas nécessaire à la réalisation du logement du dispositif 8. Avec l'exemple de réalisation décrit ici, on choisit comme logement un des côtés où est guidée en rotation une des parties extrêmes de l'axe 4 du clapet 3.In this way, one obtains a sheath easy to build and to put in place above the flue of a chimney; at the same time there is a volume 6 in which there is easily a housing for a device 8 for automatic operation of the valve 3, of the right or .. left side. It is obvious that the sheath 1 could be constituted in another way to present a housing intended to receive the device 8; the existence of a rectangular annular volume 6 is not necessary for the realization of the housing of the device 8. With the embodiment described here, one chooses as housing one of the sides where one of the extreme parts of axis 4 of valve 3.

On donne à cette partie extrême un profil non de révolution, en y faisant apparaître deux méplats opposés, par exemple, de façon à l'accoupler facilement, par simple emboîtement,avec un arbre 9(figures 3 et 4) portant une barrette à deux ailes 10A. Dans cet arbre 9 est ménagée une encoche 11 apte à recevoir l'extrémité méplate de l'axe 4. Cette encoche 11 est visible seulement sur les figures 3 et 4. Dans l'exemple illustré par ces figures, une seule aile 10A est engagée dans une fente 12 d'un élément coulissant 13. Dans l'exemple illustré par les figures 5 à 7, les deux ailes 10A sont engagées dans la fente 12 de l'élément coulissant 13. Ce dernier est monté, pour coulisser, à l'intérieur d'un corps fixe de guidage 14 et il est soumis d'une part à la poussée d'un vérin 15 sensible à la chaleur qui le déplace à une position dans laquelle la barrette 10 met le clapet 3 en position d'ouverture, d'autre part à la force antagoniste d'un ressort de rappel 16 qui tend à ramener cet élément coulissant 13 à une position dans laquelle la barrette 10 met le clapet 3 en position de fermeture.This end part is given a non-revolution profile, by showing there two opposite flats, for example, so as to easily couple it, by simple interlocking, with a shaft 9 (Figures 3 and 4) carrying a bar with two wings 10A. In this shaft 9 is provided a notch 11 capable of receiving the flat end of the axis 4. This notch 11 is visible only in Figures 3 and 4. In the example illustrated by these figures, a single wing 10A is engaged in a slot 12 of a sliding element 13. In the example illustrated by Figures 5 to 7 , the two wings 10A are engaged in the slot 12 of the sliding element 13. The latter is mounted, for sliding, inside a fixed guide body 14 and it is subjected on the one hand to the thrust d 'a cylinder 15 sensitive to heat which moves it to a position in which the bar 10 puts the valve 3 in the open position, on the other hand to the opposing force of a return spring 16 which tends to bring this element sliding 13 to a position in which the bar 10 puts the valve 3 in the closed position.

Un câble 17 est attaché à l'élément coulissant 13 soit directement comme dans l'exemple des figures 5 à 7, soit indirectement comme dans l'exemple des figures 3 et 4, afin que l'on puisse, en tirant à la main sur ce câble 17, mettre le clapet 3 en position d'ouverture.A cable 17 is attached to the sliding element 13 either directly as in the example in FIGS. 5 to 7, or indirectly as in the example in FIGS. 3 and 4, so that one can, by pulling by hand on this cable 17, put the valve 3 in the open position.

On se reportera maintenant plus spécialement aux figures 3 et 4 pour décrire un exemple préféré de réalisation d'un dispositif 8 de commande automatique du clapet 3.Reference will now be made more specifically to FIGS. 3 and 4 to describe a preferred embodiment of a device 8 for automatic control of the valve 3.

.Le corps fixe 14 présente deux parois latérales opposées 14A, 14B entre lesquelles l'axe 9 est supporté pour pouvoir tourner de 90° au moins. Dans ces parois 14A, 14B, sont creusées une première paire de 18 de rainures longitudinales de guidage et une seconde paire 19 de rainures longitudinales ; ces deux paires 18 et 19 sont espacées l'une de l'autre en sens longitudinal..The fixed body 14 has two opposite side walls 14A, 14B between which the axis 9 is supported so that it can rotate at least 90 °. In these walls 14A, 14B, a first pair of 18 of longitudinal guide grooves and a second pair 19 of longitudinal grooves are hollowed out; these two pairs 18 and 19 are spaced apart from each other in the longitudinal direction.

Les rainures 18, 19 servent à guider en coulissement un chariot glissant 20 qui a une extrémité 21 à laquelle est attaché le câble 17 et à laquelle est accrochée une extrémité du ressort de rappel 16. L'autre extrémité de ce ressort 16 est accrochée au corps fixe 14. La seconde extrémité 22 du chariot 20 est appuyé par l'effet du ressort 16 contre un vérin 15 sensible. à la chaleur.composé de deux unités montées en série et soutenues par le corps fixe 14.The grooves 18, 19 serve to guide in sliding a sliding carriage 20 which has one end 21 to which the cable 17 is attached and to which is hooked one end of the return spring 16. The other end of this spring 16 is hooked to the fixed body 14. The second end 22 of the carriage 20 is pressed by the effect of the spring 16 against a sensitive jack 15. heat. composed of two units mounted in series and supported by the fixed body 14.

Dans le chariot 20 sont ménagées deux paires successives de rainures longitudinales 23, 24 dans lesquelles est tenu et guidé en coulissement l'élément coulissant 13. Deux ressorts de traction 25 disposés symétriquement de part et d'autre de l'élément coulissant 13 relient ce dernier à l'extrémité 21 du chariot glissant 20 à laquelle est fixé le câble 17.In the carriage 20 are formed two successive pairs of longitudinal grooves 23, 24 in which the sliding element 13 is held and guided in sliding. Two tension springs 25 arranged symmetrically on either side of the sliding element 13 connect this the latter at the end 21 of the sliding carriage 20 to which the cable 17 is fixed.

Entre les parois 14A, 14B est fixé un axe transversal 26 autour duquel est montée libre en rotation une palette de verrouillage 27 qui a une première extrémité 27A destinée à rencontrer une face d'arrêt 13A prévue sur l'élément coulissant 13. La palette 27 a une seconde extrémité 27B destinée à être rencontrée et repoussée par une came 28 prévue sur une paroi longitudinale 29 qui fait partie du chariot 20. Un ressort de rappel 30 enroulé autour de l'axe 26 applique la première extrémité 27A contre l'élément 13.Between the walls 14A, 14B is fixed a transverse axis 26 around which is freely rotatably mounted a locking pallet 27 which has a first end 27A intended to meet a stop face 13A provided on the sliding element 13. The pallet 27 has a second end 27B intended to be encountered and pushed back by a cam 28 provided on a longitudinal wall 29 which forms part of the carriage 20. A return spring 30 wound around the axis 26 applies the first end 27A against the element 13 .

En position de repos du dispositif décrit ici, visible sur les figures 3 et 4, le vérin 15 est en état de rétraction et les ressorts 16 et 25 retiennent le chariot glissant 20 et l'élément coulissant 13 à l'extrémité de leur course proche du vérin 15. Une aile 10A de la barrette 10 est engagée dans.la fente 12 de Isolément coulissant 13, le clapet 3 étant en position de fermeture.In the rest position of the device described here, visible in FIGS. 3 and 4, the jack 15 is in the state of retraction and the springs 16 and 25 retain the sliding carriage 20 and the sliding element 13 at the end of their close travel. of the jack 15. A wing 10A of the bar 10 is engaged dans.la slot 12 of sliding isolation 13, the valve 3 being in the closed position.

Il existe aussi entre les parois latérales 14A, 14B, une broche transversale fixe 31 qui sert de butée à la barrette 10 quand celle-ci a pivoté suffisamment dans le sens horaire indiqué par une flèche F sur la figure 4 pour que le clapet 3 se trouve à sa position de pleine ouverture.There is also between the side walls 14A, 14B, a fixed transverse pin 31 which serves as a stop for the bar 10 when the latter has pivoted sufficiently in the clockwise direction indicated by an arrow F in FIG. 4 so that the valve 3 found in its fully open position.

Le fonctionnement du dispositif de l'invention est le suivant.The operation of the device of the invention is as follows.

Dans l'un ou l'autre exemple de réalisation, quand le vérin 15 est échauffé et se dilate, il pousse l'élément coulissant 13,contre l'effet du ressort de rappel 16, directement dans le cas de l'exemple des figures 5 à 7, indirectement par l'intermédiaire du chariot glissant 20 dans le cas de l'exemple.des figures 3 et 4.In either embodiment, when the cylinder 15 is heated and expands, it pushes the sliding element 13, against the effect of the return spring 16, directly in the case of the example in the figures 5 to 7, indirectly via the sliding carriage 20 in the case of the example. Of FIGS. 3 and 4.

Dans le cas des figures 5 à 7, la fente 12 a une partie extrême 12A élargie à la dimension de la barrette 10 avec une face terminale inclinée selon la position de celle-ci qui correspond à la fermeture du volet. Ensuite une rampe 12B agit pendant le déplacement de l'élément 13 sur une aile 10A pour faire pivoter la barrette 10 et la mettre en position d'ouverture du volet 3, après quoi la fente 12 présente une partie allongée 12C rétrécie en largeur à l'encombrement de la barrette 10 après pivotement de 90°. La partie rétrécie 12C maintient sur toute sa longueur la barrette 10 et le volet 3 en position d'ouverture.In the case of FIGS. 5 to 7, the slot 12 has an end portion 12A enlarged to the dimension of the bar 10 with an end face inclined according to the position thereof which corresponds to the closing of the flap. Then a ramp 12B acts during the movement of the element 13 on a wing 10A to rotate the bar 10 and put it in the open position of the flap 3, after which the slot 12 has an elongated part 12C narrowed in width to l size of the bar 10 after pivoting 90 °. The narrowed portion 12C maintains over its entire length the bar 10 and the flap 3 in the open position.

Dans le cas des figures 3 et 4, quand le vérin 15 se dilate, le chariot 20 est repoussé le long d'une première course pendant laquelle l'élément coulissant 13 est entraîné par l'intermédiaire des ressorts 25. Pendant ce mouvement, la barrette 10 est manoeuvrée par le déplacement de la fente 12. Après une rotation de 90° qui ouvre le clapet 3, cette barrette 10 rencontre la broche fixe 31 de sorte que l'élément 13 est arrêté en déplacement. Le chariot 20 peut être poussé plus loin que le vérin 15, pendant que les ressorts 25 s'allongent grâce aux rainures longitudinales 23, 24 qui lui permettent une course morte par rapport à l'élément 13.In the case of FIGS. 3 and 4, when the jack 15 expands, the carriage 20 is pushed back along a first stroke during which the sliding element 13 is driven by means of the springs 25. During this movement, the bar 10 is operated by the displacement of the slot 12. After a rotation of 90 ° which opens the valve 3, this bar 10 meets the fixed pin 31 so that the element 13 is stopped in movement. The carriage 20 can be pushed further than the jack 15, while the springs 25 are elongated by virtue of the longitudinal grooves 23, 24 which allow it to travel idle relative to the element 13.

Le vérin 15 est choisi pour produire cet effet d'ouverture automatique du clapet 3 quand, la température dans la gaine 1 passe de 25° à 35°C.The jack 15 is chosen to produce this effect of automatic opening of the valve 3 when the temperature in the sheath 1 goes from 25 ° to 35 ° C.

Pour obtenir un meilleur tirage de la cheminée, dès l'allumage, on peut ouvrir manuellement le volet 3 en agissant sur le câble 17 auquel est accrochée une chaînette 32 munie d'une poignée 33 (figures 1 et 2). Quand on tire sur le câble 17, dans l'exemple des figures 5 à 7, on déplace directement l'élément coulissant 13 et la fente 12 provoque par son-profil l'ouverture du volet 3. Dès que le vérin a été échauffé à 35°C (température qui est atteinte rapidement dans la gaine 1) le vérin 15 maintient l'élément 13 et le déplace même plus loin en s'échauffant davantage, le clapet 3 étant tenu en état d'ouverture.To obtain a better draft from the chimney, upon ignition, the shutter 3 can be opened manually by acting on the cable 17 to which is attached a chain 32 provided with a handle 33 (Figures 1 and 2). When the cable 17 is pulled, in the example of FIGS. 5 to 7, the sliding element 13 is moved directly and the slot 12 causes the flap 3 to open by its profile. As soon as the jack has been heated to 35 ° C (temperature which is quickly reached in the sheath 1) the cylinder 1 5 holds the element 13 and moves it even further by heating up further, the valve 3 being held in the open state.

Dans l'exemple des figures 3 et 4, une traction sur le câble 17 provoque le déplacement du chariot 20 et de l'élément 13 par l'intermédiaire des ressorts 25 jusqu'à ce que la came 28 rencontre l'extrémité 27B de la palette de verrouillage 27 dont l'extrémité 27A a alors la possibilité de pivoter et de se placer devant la face d'arrêt 13A de l'élément 13. On peut lâcher le câble 17 ; le clapet 3 reste en état d'ouverture puisque l'élément coulissant 13 ne peut pas revenir en arrière à cause de la palette de verrouillage 27 qui le retient. Ensuite, quand .le vérin 15 s'échauffe, il rencontre le chariot 20 et le pousse au-delà de cette position pendant que les ressorts 25 s'allongent et que les rainures 23, 24 glissent par rapport à l'élément 13. Pendant ce mouvement la came 28 dépasse la branche 27B.In the example of FIGS. 3 and 4, traction on the cable 17 causes the carriage 20 and the the element 13 by means of the springs 25 until the cam 28 meets the end 27B of the locking pallet 27 whose end 27A then has the possibility of pivoting and of being placed in front of the face of stop 13A of the element 13. The cable 17 can be released; the valve 3 remains in the open state since the sliding element 13 cannot go back because of the locking pallet 27 which retains it. Then, when the jack 15 heats up, it meets the carriage 20 and pushes it beyond this position while the springs 25 are elongating and the grooves 23, 24 slide relative to the element 13. During this movement the cam 28 exceeds the branch 27B.

Quand le feu s'éteint, le vérin 15 se refroidit et se rétracte et le ressort de rappel 16 remet l'élément coulissant 13 à sa position initiale de fermeture du clapet 3.When the fire goes out, the jack 15 cools and retracts and the return spring 16 returns the sliding element 13 to its initial position for closing the valve 3.

Dans le cas des figures 5 à 7, le ressort 16 est un ressort de compression qui se détend ; quand la face inclinée de la partie extrême 12A recontre une aile 10A de la barrette 10,elle la fait pivoter de 90° et ferme le clapet 3.In the case of FIGS. 5 to 7, the spring 16 is a compression spring which relaxes; when the inclined face of the end part 12A meets a wing 10A of the bar 10, it rotates it by 90 ° and closes the valve 3.

Dans le cas des figures 3 et 4, le ressort 16 est un ressort de traction qui se resserre ; quand l'élément coulissant 13 est rencontré et entrainé par l'extrémité terminale des rainures 23, 24, la came 28 rencontre la branche 27B de la palette 27 et elle fait pivoter cette dernière contre son ressort de rappel 30 dans un sens qui éloigne l'extrémité opposée 27A de l'élément coulissant 13. Ce dernier accompagne donc le chariot 20 à sa position initiale visible sur la figure 4 , en fermant le clapet 3.In the case of Figures 3 and 4, the spring 16 is a tension spring which tightens; when the sliding element 13 is encountered and driven by the terminal end of the grooves 23, 24, the cam 28 meets the branch 27B of the pallet 27 and it pivots the latter against its return spring 30 in a direction which moves the l opposite end 27A of the sliding element 13. The latter therefore accompanies the carriage 20 to its initial position visible in FIG. 4, by closing the valve 3.

On remarquera que grâce à sa faculté d'ouvrir et de fermer automatiquement, en manoeuvrant un clapet, un conduit de passage d'un gaz se chauffant et se refroidissant, la gaine de l'invention n'est pas limitée à l'utilisation préférée qui a été décrite ci dessus. On peut installer la. gaine de l'invention dans tout conduit de passage d'un gaz qui doit pouvoir circuler librement en cas d'élévation de la température comme dans les serres horticoles pendant les heures d'ensoleillement, ou dans les gaines de vide- ordures en cas d'échauffement ou encore dans le conduit des trappes d'évacuation des fumées en cas d'incendie. etc..., la gaine ayant l'avantage de refermer seille le conduit après refroidissement, ce qui est particulièrement utile non seulement dans les serres mais dans la plupart des usages.It will be noted that, thanks to its ability to open and automatically close, by maneuvering a valve, a conduit for the passage of a heating and cooling gas, the sheath of the invention is not limited to the preferred use. which has been described above. We can install it. sheath of the invention in any gas passage duct which must be able to circulate freely in the event of a rise in temperature, such as in horticultural greenhouses during sunshine hours, or in the garbage can sheaths in the event of heating, or in the flue gas exhaust flues in case of fire. etc ..., the sheath having the advantage of closing the conduit after cooling, which is particularly useful not only in greenhouses but in most uses.

Claims (9)

1. Gaine à clapet pour conduit de gaz se chauffant et se refroidissant constituée par un cadre (2) supportant un axe (4) de pivotement d'un clapet (3) qui est relié à un corps sensible à la chaleur, caractérisée en ce que ce cadre (2) présente sur un côté un logement (6) dans lequel est disposé le corps sensible à la chaleur, ce dernier étant constitué par un dispositif (8) comprenant un vérin (15) sensible à la chaleur accouplé à l'axe (4) du clapet (3) pour mettre celui-ci en position d'ouverture en s'échauffant et un ressort de rappel (16) agissant sur ce même axe (4) pour fermer le clapet (3) pendant le refroidissement.1. Sheath with valve for heating and cooling gas pipe constituted by a frame (2) supporting an axis (4) of pivoting of a valve (3) which is connected to a body sensitive to heat, characterized in that that this frame (2) has on one side a housing (6) in which is disposed the heat-sensitive body, the latter being constituted by a device (8) comprising a jack (15) heat-sensitive coupled to the axis (4) of the valve (3) to put it in the open position by heating and a return spring (16) acting on the same axis (4) to close the valve (3) during cooling. 2. Gaine selon la revendication 1 caractérisée en ce qu'elle comprend un deuxième cadre (5) disposé coaxia- lement au premier cadre (2) et espacé en sens axial de celui--ci pour ménager avec lui un volume annulaire rectangulaire (6) dont un côté sert de logement au dispositif (8).2. Sheath according to claim 1 characterized in that it comprises a second frame (5) disposed coaxially with the first frame (2) and spaced in the axial direction thereof to provide with it a rectangular annular volume (6 ) one side of which serves as a housing for the device (8). 3. Gaine selon la revendication 2 caractérisée en ce que les deux cadres (2,5) sont superposés et reposent dans un plan par leurs bords périphériques extérieurs (7), le volume annulaire (6) étant ouvert sur le passage contenant le clapet (3).3. Sheath according to claim 2 characterized in that the two frames (2,5) are superimposed and rest in a plane by their outer peripheral edges (7), the annular volume (6) being open on the passage containing the valve ( 3). 4. Gaine selon l'une quelconque des revendications 1 à 3 caractérisée en ce que le dispositif (8) de manoeuvre automatique est placé sur un des côtés du cadre (2) où une partie extrême de l'axe (4) du volet (3) est guidée en rotation.4. Sheath according to any one of claims 1 to 3 characterized in that the device (8) for automatic operation is placed on one of the sides of the frame (2) where an end part of the axis (4) of the flap ( 3) is guided in rotation. 5. Gaine selon la revendication 4 caractérisée en ce que ladite partie extrême de l'axe (4) a un profil non de révolution et le dispositif (8) comprend un corps fixe (14) contenant le vérin (15) et le ressort de rappel (16) et supportant un axe (9) accouplé en rotation par simple emboîtement avec la partie extrême de l'axe (4), ce même axe (9) portant une barrette tournante (10) dont une aile (lOA) au moins est engagée dans une fente (12) d'un élément coulissant (13) monté déplaçable à l'intérieur du corps fixe (14) sous l'effet du vérin (15) ou du ressort de rappel (16).5. Sheath according to claim 4 characterized in that said end part of the axis (4) has a non-revolution profile and the device (8) comprises a fixed body (14) containing the jack (15) and the spring of return (16) and supporting an axis (9) coupled in rotation by simple interlocking with the end part of the axis (4), this same axis (9) carrying a rotary bar (10) including at least one wing (LOA) is engaged in a slot (12) of a sliding element (13) mounted displaceable inside the fixed body (14) under the effect of the jack (15) or the return spring (16). 6. Gaine selon la revendication 5, caractérisée en ce que la fente (12) a un profil avec une partie élargie (12A) à face terminale inclinée, une rampe inclinée (12B) agissant sur une aile (10A) de la barrette (10), une partie allongée et rétrécie (12C) maintenant la barrette (10) en position d'ouverture du clapet (3).6. Sheath according to claim 5, characterized in that the slot (12) has a profile with an enlarged part (12A) with inclined end face, an inclined ramp (12B) acting on a wing (10A) of the bar (10 ), an elongated and narrowed portion (12C) holding the bar (10) in the open position of the valve (3). 7. Gaine selon la revendication 5, caractérisée en ce que l'élément coulissant (13) est monté coulissant grâce à des rainures de guidage (23,24) dans un chariot glissant (20), auquel il est relié par des ressorts (25), ce chariot (20) étant monté glissant grâce à des rainures de guidage (18,19) dans le corps fixe (14) et étant appliqué par le ressort de rappel (16) contre le vérin (15) sensible à la chaleur, une broche (31) montée fixe dans le corps fixe (14) servant de butée pour limiter la rotation de la barrette (10) en position d'ouverture du clapet (3) pendant le glissement du chariot (20) par rapport à l'élément coulissant (13).7. Sheath according to claim 5, characterized in that the sliding element (13) is slidably mounted by means of guide grooves (23,24) in a sliding carriage (20), to which it is connected by springs (25 ), this carriage (20) being slidably mounted by means of guide grooves (18,19) in the fixed body (14) and being applied by the return spring (16) against the jack (15) sensitive to heat, a spindle (31) fixedly mounted in the fixed body (14) serving as a stop to limit the rotation of the bar (10) in the valve open position (3) during the sliding of the carriage (20) relative to the sliding element (13). 8. Gaine selon la revendication 6, caractérisée en ce qu'un.câble (17) est fixé à l'élément coulissant (13) et le vérin(15) a une course supérieure à la course dudit élément. (13) nécessaire à l'ouverture du clapet (3).8. Sheath according to claim 6, characterized in that a cable (17) is fixed to the sliding element (13) and the jack (15) has a stroke greater than the stroke of said element. (13) necessary to open the valve (3). 9. Gaine selon la revendication 7, caractérisée en ce qu'un câble (17) est fixé à l'extrémité (21) du chariot (20) opposée à son extrémité (22) appliquée contre le vérin (15), tandis qu'une palette de verrouillage (27) est montée pivotante à l'intérieur du corps fixe (14) sous l'effet d'un ressort de rappel (30), cette palette (27) étant apte à immobiliser l'élément coulissant (13) contre l'effet des ressorts (25) et étant repoussée hors de cette position par une came (28) faisant partie du chariot glissant (20), ce dernier ayant une course supérieure à la course de l'élément coulissant (13) nécessaire à l'ouverture du clapet (3).9. Sheath according to claim 7, characterized in that a cable (17) is fixed to the end (21) of the carriage (20) opposite its end (22) applied against the jack (15), while a locking pallet (27) is pivotally mounted inside the fixed body (14) under the effect of a return spring (30), this pallet (27) being able to immobilize the sliding element (13) against the effect of the springs (25) and being pushed out of this position by a cam (28) forming part of the sliding carriage (20), the latter having a stroke greater than the stroke of the sliding element (13) necessary to the opening of the valve (3).
EP83401295A 1982-06-30 1983-06-22 Casing with an automatically operated flap for a duct such as a fire-place flue gas duct Withdrawn EP0098211A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8211496 1982-06-30
FR8211496A FR2529637B1 (en) 1982-06-30 1982-06-30 SHEATH WITH AUTOMATICALLY CONTROLLED VALVE FOR DUCT SUCH AS SMOKE DUCT FOR FIREPLACES AT ATRES

Publications (1)

Publication Number Publication Date
EP0098211A1 true EP0098211A1 (en) 1984-01-11

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EP83401295A Withdrawn EP0098211A1 (en) 1982-06-30 1983-06-22 Casing with an automatically operated flap for a duct such as a fire-place flue gas duct

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EP (1) EP0098211A1 (en)
FR (1) FR2529637B1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH364882A (en) * 1957-06-13 1962-10-15 Von Blanquet Otto Dr Exhaust gas safety device for gas-heated devices
FR1429027A (en) * 1965-03-31 1966-02-18 Exhaust gas valve incorporated in a downward flaring hood, especially for gas heaters
DE1784091A1 (en) * 1968-07-06 1971-07-22 Trox Gmbh Geb Fire protection flap, in particular for installation in the ventilation ducts of ships
FR2376935A1 (en) * 1977-01-06 1978-08-04 Sort Andre Pivoting chain controlled chimney flap - locates in flue on horizontal axis offset from its centre line and regulates passage of air
FR2509440A2 (en) * 1981-07-08 1983-01-14 Dufois Gilbert Automatic flue damper for open fire - has actuator with several heat sensors to control damper plate

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH364882A (en) * 1957-06-13 1962-10-15 Von Blanquet Otto Dr Exhaust gas safety device for gas-heated devices
FR1429027A (en) * 1965-03-31 1966-02-18 Exhaust gas valve incorporated in a downward flaring hood, especially for gas heaters
DE1784091A1 (en) * 1968-07-06 1971-07-22 Trox Gmbh Geb Fire protection flap, in particular for installation in the ventilation ducts of ships
FR2376935A1 (en) * 1977-01-06 1978-08-04 Sort Andre Pivoting chain controlled chimney flap - locates in flue on horizontal axis offset from its centre line and regulates passage of air
FR2509440A2 (en) * 1981-07-08 1983-01-14 Dufois Gilbert Automatic flue damper for open fire - has actuator with several heat sensors to control damper plate

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FR2529637B1 (en) 1986-02-28
FR2529637A1 (en) 1984-01-06

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