EP1906125B1 - Frame furnace - Google Patents

Frame furnace Download PDF

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Publication number
EP1906125B1
EP1906125B1 EP07291029A EP07291029A EP1906125B1 EP 1906125 B1 EP1906125 B1 EP 1906125B1 EP 07291029 A EP07291029 A EP 07291029A EP 07291029 A EP07291029 A EP 07291029A EP 1906125 B1 EP1906125 B1 EP 1906125B1
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EP
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Prior art keywords
flue
tiles
kiln
supports
conduit
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German (de)
French (fr)
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EP1906125A1 (en
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Philippe Hatton
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Ceric SARL
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Ceric SARL
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types

Definitions

  • the present invention relates generally to furnaces used for cooking products such as earthenware or ceramic products.
  • furnaces are usually in the form of a tunnel of great length crossed by trolleys carrying the products to be cooked.
  • Circulation of fluid, air or any other suitable gas creates a gaseous stream ensuring the ventilation and heating of the products for cooking.
  • the temperature, the hygrometric degree, the speed of movement of the gas stream are continuously monitored in order to ensure a good quality treatment of the products to be cooked.
  • said gas stream enters the chamber through wells or slots in the wall thereof, in the vault or in the side walls.
  • Means, such as fans, are arranged in the ventilation circuit, usually outside the enclosure, to ensure the circulation of the gas stream.
  • the present invention aims to provide a device for creating a gas circulation in a baking oven, said device being more particularly adapted to be implemented in tunnel furnaces usually called gantry ovens.
  • tunnel furnaces usually called gantry ovens.
  • These furnaces owe their name to inverted U-shaped gantries, consisting of a horizontal beam and two feet, arranged next to each other to form an external framework of the tunnel furnace intended to carry the elements constituting the enclosure of the furnace.
  • the gantries arranged outside the furnace, above the upper wall thereof, are constituted by metal profiles.
  • Supports for fastening the refractory wall of the furnace are carried by said gantries.
  • suspension pieces carried by the horizontal beam of each gantry constitute a support similar to a globally inverted T-shaped beam arranged horizontally.
  • Interjoists are positioned perpendicular to said supports, resting on the heels vis-à-vis two adjacent supports one of the other.
  • the side walls of the oven are made in a similar manner by supports fixed on the feet of the porticoes between which are interjoists.
  • An insulating coating is placed on the outer surfaces of the furnace chamber interjoists to reduce heat loss to the outside of the useful space, or laboratory oven.
  • suspension parts and interjoists are for example made of refractory materials.
  • the gantry furnace of the kind comprising a plurality of gantries arranged parallel to each other and defining the bays of the furnace, and supports fixed to said gantries between which are positioned interlocks constituting the walls of the furnace, is characterized in that at least some interjoists are constituted by a plug of axis parallel to said supports.
  • a gantry furnace of known type comprises a plurality of inverted U-shaped metal gantries 1 consisting of a horizontal beam 11 and two legs 13. These gantries 1 are positioned one after the other. parallel to the others and constitute an external framework of the furnace for supporting the elements constituting the enclosure of the furnace.
  • Two porticos 1 neighbors one of the other define between them a span 10 of the oven.
  • Each horizontal beam 11 of gantry carries, by the implementation of fastening means 12, a plurality of suspension parts 200 positioned next to each other.
  • Said suspension pieces 200 constitute a horizontal support 2 similar to a beam with inverted T-shaped section.
  • the sole 21 of such a support 2 is wider than the core 20 and forms on either side of this core 20 a support 23 extending longitudinally over the entire length of said support 2.
  • Entrevous 3 generally parallelepiped are positioned between two supports 2 adjacent to each other being oriented perpendicular to said supports 2. Said intervous shown in the drawing have protruding edges 32 placed on the supports 23 vis-à-vis the supports 2.
  • An insulating coating 34 covers the upper faces of interjoists 3.
  • some intervous 3 are constituted by a plug 4 of generally rectangular section.
  • Said bush 4 replace the interjoists 3 and are positioned in the same manner as the latter, next to each other in the width of the oven, being placed on the supports 23 of the supports 2.
  • Said plugs 4 positioned next to one another in a span constitute a transverse duct 45 extending parallel to said supports 2.
  • said transverse duct 45 constituted by the invention, forms a passage in which it is possible to circulate a gaseous fluid for improving ventilation of rooms during cooking.
  • the transverse duct 45 extends over at least a portion of the length of the supports 2 between which it is positioned, its length is defined by the number of plugs 4 positioned next to each other.
  • the plugs 4 extend entirely between the webs 20 of the supports 2, and above the soles 21 of said supports 2 to provide a conduit 45 of the largest possible section.
  • the bushlets 4 comprise a lower part extending between the flanges 21.
  • the plugs 4 are made of refractory material.
  • Different types of plugs 4 are provided to fulfill different functions in the ventilation system and constitute a family of elements from which the designer of the oven chooses according to the flow of the predetermined gaseous fluid to be obtained.
  • FIGS. figures 2 and 3 Two embodiments and assembly of a fan are shown in FIGS. figures 2 and 3 for example.
  • distribution bushels are visible on the figure 3 they have at least one orifice 41 in their lower face facing the furnace laboratory.
  • remotely controllable shutters are disposed in front of the orifices 41 of said distribution plugs 401 in order to allow adjustment of the size of the free passage.
  • End bushings 402 are also shown in the drawing, these bushlets 402 have one end closed by a transverse wall 42 defining the end of the conduit 45.
  • bushels may be added to this family, for example a single plug 403 which constitutes a transverse conduit portion 45 but does not have any particular element or a shutter plug in which a flap, possibly adjustable from the outside, reduces the section of the transverse duct 45.
  • the transverse duct 45 formed by the plugs 4 is used to suck the gaseous fluid present in the furnace laboratory and return it to said laboratory at different points along said duct.
  • the fan 5 is chosen so as to suck the gaseous fluid present in the laboratory through the opening 40 of the plug-fan 400 and to discharge it through the openings 41 of the distribution bushings 401, or vice versa.
  • transverse duct portions 45 are created if necessary in the same bay by placing end plugs 402 at the appropriate locations along the supports 2, a transverse duct 45 in two parts is represented by way of example at the figure 3 .
  • the side walls of the furnace have a constitution similar to that of the vault and comprise fastening pieces 600 fixed to the feet 13 of the frames 1 in order to form vertical supports 6 between which are positioned interjoists 3 identical to those used in the vault.
  • a vertical duct 46 is constituted in at least one longitudinal wall of the furnace and connected, if necessary to the transverse duct 45 disposed in the same bay.
  • a vertical duct 46 is made in the same way as a transverse duct 45 according to the invention, replacing the interjoists 3 of a span by bushels 4 selected from the bushel family as a function of the gaseous fluid circulation to be ensured. .
  • a wedge bush 405 provides the connection between a transverse duct 45 and a vertical duct 46.
  • the implementation of the bushings 4 according to the invention makes it possible to better regulate the circulation of gaseous currents around the parts to be treated by adapting the position of the openings in the transverse and / or vertical ducts.
  • openings 41 are positioned along the vertical ducts 46 at selected heights in order to ensure a privileged circulation of the gaseous currents at the level of the load carried by the wagons or at the level of adapted zones provided in the spaces. lower of said wagons.
  • the transverse conduits 45 and vertical 46 are connected to external fluid distribution means and can then be used to remove gaseous fluid circulating in the oven and replace it by injecting air, or any other gaseous fluid.

Abstract

In a gantry furnace having several parallel gantries (1) defining the span of the furnace, supports (2, 6) fixed to the gantries and blocks (3) positioned between the supports to form the furnace walls, at least some of the blocks form a flue (4) with an axis parallel to the supports. An independent claim is included for a method for ventilating the gantry furnace, involving (a) forming transverse and/or vertical channels (45, 46) across at least some of the spans of the furnace by positioning blocks in the form of a flue (4) and (b) circulating gas between the furnace chamber and the channels.

Description

La présente invention concerne d'une manière générale les fours mis en oeuvre pour la cuisson de produits tels que des produits en terre ou en céramique.The present invention relates generally to furnaces used for cooking products such as earthenware or ceramic products.

Ces fours se présentent usuellement sous la forme d'un tunnel de grande longueur traversé par des chariots portant les produits à cuire.These furnaces are usually in the form of a tunnel of great length crossed by trolleys carrying the products to be cooked.

Une circulation de fluide, de l'air ou tout autre gaz approprié, crée un courant gazeux assurant la ventilation et le chauffage des produits en vue de leur cuisson. La température, le degré hygrométrique, la vitesse de déplacement du courant gazeux sont continuellement surveillés afin d'assurer un traitement de bonne qualité des produits à cuire. De manière usuelle, ledit courant gazeux entre dans l'enceinte en traversant des puits ou des fentes pratiqués dans la paroi de celle-ci, dans la voûte ou dans les murs latéraux. Des moyens, tels que des ventilateurs, sont disposés dans le circuit de ventilation, usuellement à l'extérieur de l'enceinte, pour assurer la circulation du courant gazeux.Circulation of fluid, air or any other suitable gas creates a gaseous stream ensuring the ventilation and heating of the products for cooking. The temperature, the hygrometric degree, the speed of movement of the gas stream are continuously monitored in order to ensure a good quality treatment of the products to be cooked. Usually, said gas stream enters the chamber through wells or slots in the wall thereof, in the vault or in the side walls. Means, such as fans, are arranged in the ventilation circuit, usually outside the enclosure, to ensure the circulation of the gas stream.

Le problème qui se pose dans ces enceintes tient au fait qu'il est très difficile d'obtenir une circulation uniforme du courant gazeux autour de chacun des produits présents dans l'enceinte.The problem that arises in these chambers is that it is very difficult to obtain a uniform flow of the gas stream around each of the products present in the enclosure.

De nombreuses propositions ont été faites afin d'améliorer la circulation du courant gazeux en ajoutant des ventilateurs, des déflecteurs,... mais aucune n'a donné totalement satisfaction.Many proposals have been made to improve the circulation of the gas stream by adding fans, deflectors, ... but none has given complete satisfaction.

La présente invention tend à proposer un dispositif destiné à créer une circulation gazeuse dans un four de cuisson, ledit dispositif étant plus particulièrement adapté à être mis en oeuvre dans les fours tunnels usuellement dénommés fours portiques. Ces fours doivent leur appellation aux portiques en U inversés, constitués d'une poutre horizontale et de deux pieds, disposés les uns à côté des autres pour former une ossature externe du four tunnel destinée à porter les éléments constituant l'enceinte du four.The present invention aims to provide a device for creating a gas circulation in a baking oven, said device being more particularly adapted to be implemented in tunnel furnaces usually called gantry ovens. These furnaces owe their name to inverted U-shaped gantries, consisting of a horizontal beam and two feet, arranged next to each other to form an external framework of the tunnel furnace intended to carry the elements constituting the enclosure of the furnace.

Les portiques disposés à l'extérieur du four, au-dessus de la paroi supérieure de celui-ci, sont constitués par des profilés métalliques.The gantries arranged outside the furnace, above the upper wall thereof, are constituted by metal profiles.

Des supports destinés à l'accrochage de la paroi réfractaire du four sont portés par lesdits portiques.Supports for fastening the refractory wall of the furnace are carried by said gantries.

Dans la voûte des fours portiques, des pièces de suspension, portées par la poutre horizontale de chaque portique constituent un support semblable à une poutrelle globalement en forme de T inversé disposée horizontalement. Des entrevous sont positionnés perpendiculairement auxdits supports, en appui sur les talons en vis-à-vis de deux supports voisins l'un de l'autre.In the vault of the gantry furnaces, suspension pieces carried by the horizontal beam of each gantry constitute a support similar to a globally inverted T-shaped beam arranged horizontally. Interjoists are positioned perpendicular to said supports, resting on the heels vis-à-vis two adjacent supports one of the other.

Les parois latérales du four sont réalisées de manière semblable par des supports fixés sur les pieds des portiques entre lesquels sont positionnés des entrevous.The side walls of the oven are made in a similar manner by supports fixed on the feet of the porticoes between which are interjoists.

Un revêtement isolant est posé sur les faces externes à l'enceinte du four des entrevous pour réduire les pertes de chaleur vers l'extérieur de l'espace utile, ou laboratoire, du four.An insulating coating is placed on the outer surfaces of the furnace chamber interjoists to reduce heat loss to the outside of the useful space, or laboratory oven.

Les pièces de suspension et les entrevous sont par exemple réalisés en matériaux réfractaires.The suspension parts and interjoists are for example made of refractory materials.

Selon l'invention le four portique du genre comportant une pluralité de portiques disposés parallèlement les uns aux autres et définissant des travées du four, et des supports fixés auxdits portiques entre lesquels sont positionnés des entrevous constituant les parois du four, est caractérisé en ce que certains au moins des entrevous sont constitués par un boisseau d'axe parallèle auxdits supports.According to the invention the gantry furnace of the kind comprising a plurality of gantries arranged parallel to each other and defining the bays of the furnace, and supports fixed to said gantries between which are positioned interlocks constituting the walls of the furnace, is characterized in that at least some interjoists are constituted by a plug of axis parallel to said supports.

Le four selon l'invention est encore remarquable en ce que :

  • lesdits boisseaux sont positionnés les uns à côté des autres dans une travée et constituent un conduit transversal et/ou vertical s'étendant parallèlement auxdits supports,
  • le conduit s'étend sur au moins une partie de la longueur des supports entre lesquels il est positionné,
  • un conduit transversal est raccordé à au moins un conduit vertical,
  • le boisseau est de section globalement rectangulaire,
  • lesdits boisseaux sont de différents types, par exemple boisseau-ventilateur, boisseau de distribution, boisseau d'extrémité, boisseau simple, boisseau à volet, ...
  • un boisseau de distribution comporte au moins un obturateur disposé devant un orifice,
  • un boisseau de coin assure la liaison entre un conduit transversal et un conduit vertical.
The oven according to the invention is still remarkable in that:
  • said plugs are positioned next to one another in a span and constitute a transverse and / or vertical duct extending parallel to said supports,
  • the duct extends over at least a portion of the length of the supports between which it is positioned,
  • a transverse duct is connected to at least one vertical duct,
  • the bushel is of generally rectangular section,
  • said bushels are of different types, for example bushel-fan, bushel dispenser, end bushel, single bushel, shutter bushel, ...
  • a distribution valve comprises at least one shutter disposed in front of an orifice,
  • a wedge bushel ensures the connection between a transverse duct and a vertical duct.

L'invention concerne également un procédé de ventilation d'un four portique selon l'invention, caractérisé en ce que :

  • on forme des conduits transversaux et/ou verticaux dans certaines au moins des travées du four en positionnant des entrevous en forme de boisseau,
  • on fait circuler un fluide gazeux entre l'enceinte du four et lesdits conduits transversaux et/ou verticaux.
The invention also relates to a ventilation method of a portal kiln according to the invention, characterized in that:
  • transverse and / or vertical ducts are formed in at least some of the bays of the furnace by positioning bush-shaped interjoists,
  • a gaseous fluid is circulated between the enclosure of the furnace and said transverse and / or vertical ducts.

Le procédé de ventilation d'un four portique selon l'invention est encore remarquable en ce que :

  • une circulation du fluide gazeux prédéterminée est obtenue en choisissant les boisseaux destinés à constituer chaque conduit parmi une famille comportant par exemple des boisseaux-ventilateur, boisseaux de distribution, boisseaux d'extrémité, boisseaux simple, boisseaux à volet, boisseaux de coin...,
  • certains au moins des conduits transversaux et/ou verticaux sont raccordés à des moyens externes de distribution de fluide.
The ventilation method of a portal kiln according to the invention is still remarkable in that:
  • a circulation of the predetermined gaseous fluid is obtained by selecting the plugs intended to constitute each duct from a family comprising, for example, bushel-fans, distribution bushings, end bushels, single bushel, shutter bushel, wedge bushel ... ,
  • at least some of the transverse and / or vertical ducts are connected to external fluid distribution means.

L'invention sera mieux comprise grâce à la description qui va suivre donnée à titre d'exemple non limitatif en référence aux dessins annexés dans lesquels :

  • la figure 1 est une vue en coupe partielle de la voûte d'un four portique, globalement limitée à une travée,
  • la figure 2 est une vue similaire à la figure 1 pour un four portique dans lequel l'invention est mise en oeuvre suivant une première forme de réalisation, la coupe étant faite au niveau d'un boisseau-ventilateur,
  • la figure 3 est une vue partielle en perspective d'un four portique dans lequel l'invention est mise en oeuvre suivant une seconde forme de réalisation.
The invention will be better understood from the following description given by way of nonlimiting example with reference to the accompanying drawings in which:
  • the figure 1 is a partial sectional view of the vault of a gantry furnace, generally limited to a span,
  • the figure 2 is a view similar to the figure 1 for a gantry furnace in which the invention is implemented according to a first embodiment, the section being made at a bushel-fan,
  • the figure 3 is a partial perspective view of a gantry furnace in which the invention is implemented according to a second embodiment.

Comme représenté sur la figure 1, une four portique de type connu comporte une pluralité de portiques 1 métalliques en forme de U inversé, constitués d'une poutre horizontale 11 et de deux pieds 13. Ces portiques 1 sont positionnés les uns parallèlement aux autres et constituent une ossature externe du four destinée à supporter les éléments constituant l'enceinte du four.As shown on the figure 1 , a gantry furnace of known type comprises a plurality of inverted U-shaped metal gantries 1 consisting of a horizontal beam 11 and two legs 13. These gantries 1 are positioned one after the other. parallel to the others and constitute an external framework of the furnace for supporting the elements constituting the enclosure of the furnace.

Deux portiques 1 voisins l'un de l'autre définissent entre eux une travée 10 du four.Two porticos 1 neighbors one of the other define between them a span 10 of the oven.

Chaque poutre horizontale 11 de portique porte, par la mise en oeuvre de moyens de fixation 12, une pluralité de pièces de suspension 200 positionnées les unes à côté des autres.Each horizontal beam 11 of gantry carries, by the implementation of fastening means 12, a plurality of suspension parts 200 positioned next to each other.

Lesdites pièces de suspension 200 constituent un support horizontal 2 semblable à une poutrelle à section en forme de T inversé. La semelle 21 d'un tel support 2 est plus large que l'âme 20 et forme de part et d'autre de cette âme 20 un appui 23 s'étendant longitudinalement sur toute la longueur dudit support 2.Said suspension pieces 200 constitute a horizontal support 2 similar to a beam with inverted T-shaped section. The sole 21 of such a support 2 is wider than the core 20 and forms on either side of this core 20 a support 23 extending longitudinally over the entire length of said support 2.

Des entrevous 3 globalement parallélépipédiques sont positionnés entre deux supports 2 voisins l'un de l'autre en étant orientés perpendiculairement auxdits supports 2. Lesdits entrevous représentés au dessin comportent des bords dépassants 32 posés sur les appuis 23 en vis-à-vis des supports 2.Entrevous 3 generally parallelepiped are positioned between two supports 2 adjacent to each other being oriented perpendicular to said supports 2. Said intervous shown in the drawing have protruding edges 32 placed on the supports 23 vis-à-vis the supports 2.

Un revêtement isolant 34 recouvre les faces supérieures des entrevous 3.An insulating coating 34 covers the upper faces of interjoists 3.

Suivant l'invention, certains entrevous 3 sont constitués par un boisseau 4 de section globalement rectangulaire.According to the invention, some intervous 3 are constituted by a plug 4 of generally rectangular section.

Lesdits boisseaux 4 remplacent les entrevous 3 et sont positionnés de la même manière que ces derniers, les uns à côté des autres dans la largeur du four, en étant posés sur les appuis 23 des supports 2.Said bush 4 replace the interjoists 3 and are positioned in the same manner as the latter, next to each other in the width of the oven, being placed on the supports 23 of the supports 2.

Lesdits boisseaux 4 positionnés les uns à côté des autres dans une travée constituent un conduit transversal 45 s'étendant parallèlement auxdits supports 2.Said plugs 4 positioned next to one another in a span constitute a transverse duct 45 extending parallel to said supports 2.

Comme on aura pu le comprendre, ledit conduit transversal 45 constitué grâce à l'invention, forme un passage dans lequel il est possible de faire circuler un fluide gazeux destiné à améliorer la ventilation des pièces en cours de cuisson.As will have been understood, said transverse duct 45 constituted by the invention, forms a passage in which it is possible to circulate a gaseous fluid for improving ventilation of rooms during cooking.

Le conduit transversal 45 s'étend sur au moins une partie de la longueur des supports 2 entre lesquels il est positionné, sa longueur est définie par le nombre de boisseaux 4 positionnés les uns à côté des autres.The transverse duct 45 extends over at least a portion of the length of the supports 2 between which it is positioned, its length is defined by the number of plugs 4 positioned next to each other.

Dans l'exemple de réalisation représenté au dessin, les boisseaux 4 s'étendent en totalité entre les âmes 20 des supports 2, et au-dessus des semelles 21 desdits supports 2 afin de proposer un conduit 45 de la plus grande section possible.In the embodiment shown in the drawing, the plugs 4 extend entirely between the webs 20 of the supports 2, and above the soles 21 of said supports 2 to provide a conduit 45 of the largest possible section.

Suivant une variante de réalisation non représentée au dessin, les boisseaux 4 comportent une partie inférieure s'étendant entre les semelles 21.According to an alternative embodiment not shown in the drawing, the bushlets 4 comprise a lower part extending between the flanges 21.

Comme les autres éléments de la voûte, pièces de suspension 200 et entrevous 3, les boisseaux 4 sont réalisés en matière réfractaire.Like the other elements of the vault, suspension parts 200 and interjoists 3, the plugs 4 are made of refractory material.

Différents types de boisseaux 4 sont prévus afin de remplir différentes fonctions dans le système de ventilation et constituent une famille d'éléments parmi lesquels le concepteur du four choisit en fonction de la circulation du fluide gazeux prédéterminée qui doit être obtenue.Different types of plugs 4 are provided to fulfill different functions in the ventilation system and constitute a family of elements from which the designer of the oven chooses according to the flow of the predetermined gaseous fluid to be obtained.

Il a par exemple été représenté au dessin un boisseau-ventilateur 400 dans lequel est positionné un ventilateur 5 aspirant ou refoulant le courant gazeux à travers une ouverture 40 de leur face inférieure tournée vers le laboratoire du four, c'est-à-dire vers l'espace dans lequel circulent les produits à cuire. Ledit ventilateur est entraîné par des moyens 50 représentés schématiquement au dessin, et porté par les portiques 1 par la mise en oeuvre de moyens 51. Deux formes de réalisation et de montage d'un ventilateur sont représentées aux figures 2 et 3 à titre d'exemple.It has for example been represented in the drawing a bushel-fan 400 in which is positioned a fan 5 sucking or pushing the gas stream through an opening 40 of their lower face facing the laboratory of the oven, that is to say to the space in which the products to be cooked circulate. Said fan is driven by means 50 shown schematically in the drawing, and carried by the gantries 1 by the implementation of means 51. Two embodiments and assembly of a fan are shown in FIGS. figures 2 and 3 for exemple.

Des boisseaux de distribution 401 sont visibles sur la figure 3, ils présentent au moins une orifice 41 dans leur face inférieure tournée vers le laboratoire du four. Dans un exemple de réalisation non représenté au dessin, des obturateurs pouvant être commandés à distance sont disposés devant les orifices 41 desdits boisseaux de distribution 401 afin de permettre le réglage de la dimension du passage libre.401 distribution bushels are visible on the figure 3 they have at least one orifice 41 in their lower face facing the furnace laboratory. In an exemplary embodiment not shown in the drawing, remotely controllable shutters are disposed in front of the orifices 41 of said distribution plugs 401 in order to allow adjustment of the size of the free passage.

Des boisseaux d'extrémité 402 sont également représentés au dessin, ces boisseaux 402 ont une extrémité fermée par une paroi transversale 42 définissant l'extrémité du conduit 45.End bushings 402 are also shown in the drawing, these bushlets 402 have one end closed by a transverse wall 42 defining the end of the conduit 45.

D'autres boisseaux peuvent être ajoutés à cette famille, par exemple un boisseau simple 403 qui constitue une portion de conduit transversal 45 mais ne présente pas d'élément particulier ou un boisseau à volet dans lequel un volet, éventuellement réglable de l'extérieur, permet de réduire la section du conduit transversal 45.Other bushels may be added to this family, for example a single plug 403 which constitutes a transverse conduit portion 45 but does not have any particular element or a shutter plug in which a flap, possibly adjustable from the outside, reduces the section of the transverse duct 45.

Le conduit transversal 45 formé par les boisseaux 4 est mis en oeuvre pour aspirer le fluide gazeux présent dans le laboratoire du four et le renvoyer vers ledit laboratoire en des points différents le long dudit conduit.The transverse duct 45 formed by the plugs 4 is used to suck the gaseous fluid present in the furnace laboratory and return it to said laboratory at different points along said duct.

Le ventilateur 5 est choisi de manière à aspirer le fluide gazeux présent dans le laboratoire à travers l'ouverture 40 du boisseau-ventilateur 400 et à le refouler par les ouvertures 41 des boisseaux de distribution 401, ou inversement.The fan 5 is chosen so as to suck the gaseous fluid present in the laboratory through the opening 40 of the plug-fan 400 and to discharge it through the openings 41 of the distribution bushings 401, or vice versa.

Deux ou plusieurs parties de conduit transversal 45 sont crées si nécessaire dans une même travée en disposant des boisseaux d'extrémité 402 aux emplacements adaptés le long des supports 2, un conduit transversal 45 en deux parties est représenté à titre d'exemple à la figure 3.Two or more transverse duct portions 45 are created if necessary in the same bay by placing end plugs 402 at the appropriate locations along the supports 2, a transverse duct 45 in two parts is represented by way of example at the figure 3 .

Comme visible au dessin, et plus précisément sur la figure 3, les parois latérales du four ont une constitution semblable à celle de la voûte et comportent des pièces d'accrochage 600 fixées aux pieds 13 des portiques 1 afin de constituer des supports verticaux 6 entre lesquels sont positionnés des entrevous 3 identiques à ceux mis en oeuvre dans la voûte.As visible in the drawing, and more precisely on the figure 3 , the side walls of the furnace have a constitution similar to that of the vault and comprise fastening pieces 600 fixed to the feet 13 of the frames 1 in order to form vertical supports 6 between which are positioned interjoists 3 identical to those used in the vault.

Suivant l'invention, dans une travée du four, un conduit vertical 46 est constitué dans au moins une paroi longitudinale du four et raccordé, si nécessaire au conduit transversal 45 disposé dans la même travée.According to the invention, in a span of the furnace, a vertical duct 46 is constituted in at least one longitudinal wall of the furnace and connected, if necessary to the transverse duct 45 disposed in the same bay.

Un conduit vertical 46 est réalisé de la même manière qu'un conduit transversal 45 selon l'invention, en remplaçant les entrevous 3 d'une travée par des boisseaux 4 choisis parmi la famille de boisseaux en fonction de la circulation de fluide gazeux à assurer.A vertical duct 46 is made in the same way as a transverse duct 45 according to the invention, replacing the interjoists 3 of a span by bushels 4 selected from the bushel family as a function of the gaseous fluid circulation to be ensured. .

Un boisseau de coin 405 assure la liaison entre un conduit transversal 45 et un conduit vertical 46.A wedge bush 405 provides the connection between a transverse duct 45 and a vertical duct 46.

Comme on aura pu le comprendre, la mise en oeuvre des boisseaux 4 selon l'invention permet de régler au mieux la circulation des courants gazeux autour des pièces à traiter en adaptant la position des ouvertures dans les conduits transversaux et/ou verticaux.As will have been understood, the implementation of the bushings 4 according to the invention makes it possible to better regulate the circulation of gaseous currents around the parts to be treated by adapting the position of the openings in the transverse and / or vertical ducts.

Parmi la famille d'éléments de boisseaux, plusieurs boisseaux de distribution 401 dont la ou les ouvertures 41 ont des sections différentes peuvent être proposés.Among the family of bush elements, several distribution bushings 401 whose opening or openings 41 have different sections may be proposed.

A titre d'exemple, des ouvertures 41 sont positionnées le long des conduits verticaux 46 à des hauteurs choisies afin d'assurer une circulation privilégiée des courants gazeux au niveau de la charge portée par les wagons ou au niveau de zones adaptées prévues dans les espaces inférieurs desdits wagons.For example, openings 41 are positioned along the vertical ducts 46 at selected heights in order to ensure a privileged circulation of the gaseous currents at the level of the load carried by the wagons or at the level of adapted zones provided in the spaces. lower of said wagons.

Suivant une forme de mise en oeuvre de l'invention non représentée au dessin, les conduits transversaux 45 et verticaux 46 sont raccordés à des moyens externes de distribution de fluide et peuvent alors être utilisés pour retirer du fluide gazeux circulant dans le four et le remplacer en injectant de l'air, ou tout autre fluide gazeux.According to one embodiment of the invention not shown in the drawing, the transverse conduits 45 and vertical 46 are connected to external fluid distribution means and can then be used to remove gaseous fluid circulating in the oven and replace it by injecting air, or any other gaseous fluid.

Pour certaines cuissons, il est également possible d'utiliser ces conduits pour prévoir une injection de produits gazeux ou solides, etc.For some cooking, it is also possible to use these ducts to provide an injection of gaseous or solid products, etc.

Claims (10)

  1. Gantry kiln of the kind comprising a plurality of gantries (1) which are arranged parallel to one another and define bays of the kiln, and supports (2, 6) which are fixed to the said gantries (1) and between which case-bay tiles (3) constituting the walls of the kiln are positioned, characterised in that at least some of the case-bay tiles (3) are constituted by a flue tile (4) with an axis which is parallel to the said supports (2, 6).
  2. Kiln according to claim 1, characterised in that the said flue tiles (4) are positioned side by side within a bay and constitute a transverse conduit (45) and/or a vertical conduit (46) which extends parallel to the said supports (2, 6).
  3. Kiln according to claim 2, characterised in that the conduit (45) extends over at least part of the length of the supports (2, 6) between which it is positioned.
  4. Kiln according to claim 2 or according to claim 3, characterised in that a transverse conduit (45) is linked up to at least one vertical conduit (46).
  5. Kiln according to any of the preceding claims, characterised in that the flue tile (4) is of a section which is rectangular overall.
  6. Kiln according to any of the preceding claims, characterised in that the said flue tiles (4) are of different types, for example a fan flue tile (400), a distributing flue tile (401), an end flue tile (402), a plain flue tile (403), a shutter-type flue tile, etc.
  7. Kiln according to any of claims 2 to 6, characterised in that a corner flue tile (405) provides the link between the transverse conduit (45) and a vertical conduit (46).
  8. Method of ventilating a gantry kiln according to any of claims 1 to 7, characterised in that:
    - transverse conduits (45) and/or vertical conduits (46) are formed in at least some of the bays of the kiln by positioning case-bay tiles in the form of a flue tile (4);
    - a gaseous fluid is caused to circulate between the enclosure of the kiln and the said transverse conduits (45) and/or vertical conduits (46).
  9. Method of ventilating a gantry kiln according to claim 8, characterised in that a predetermined circulation of the gaseous fluid is obtained by choosing the flue tiles intended to constitute each conduit (45, 46) from a family comprising, for example, fan flue tiles (400), distributing flue tiles (401), end flue tiles (402), plain flue tiles (403), shutter-type flue tiles, corner flue tiles (405), etc.
  10. Method of ventilating a gantry kiln according to claim 8 or according to claim 9, characterised in that at least some of the transverse conduits and/or vertical conduits are linked up to external fluid-distributing means.
EP07291029A 2006-09-27 2007-08-22 Frame furnace Active EP1906125B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0608498A FR2906354B1 (en) 2006-09-27 2006-09-27 "PORTIC OVEN"

Publications (2)

Publication Number Publication Date
EP1906125A1 EP1906125A1 (en) 2008-04-02
EP1906125B1 true EP1906125B1 (en) 2009-10-28

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ID=37744641

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07291029A Active EP1906125B1 (en) 2006-09-27 2007-08-22 Frame furnace

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US (1) US7950922B2 (en)
EP (1) EP1906125B1 (en)
AT (1) ATE447152T1 (en)
DE (1) DE602007002965D1 (en)
FR (1) FR2906354B1 (en)

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2255617A (en) * 1940-07-20 1941-09-09 Clarence B Hoak Annealing apparatus and method
US2634694A (en) * 1948-08-18 1953-04-14 Detrick M H Co Suspended arch tile structure
US3045616A (en) * 1959-12-30 1962-07-24 United States Steel Corp Suspended refractory roof
US3240173A (en) * 1963-07-01 1966-03-15 Chicago Fire Brick Co Cantilever structure for furnace roof
US3589316A (en) * 1969-07-18 1971-06-29 Levi S Longenecker Panelized suspended roof for reverberatory furnace
US3789780A (en) * 1972-12-29 1974-02-05 L Longenecker Suspended roof and end wall construction for reverberatory furnace
US4413572A (en) * 1983-03-07 1983-11-08 George P. Reintjes Company, Inc. Adjustable support assembly for open hearth furnace
US4474497A (en) * 1983-04-14 1984-10-02 Combustion Engineering, Inc. Furnace maintenance platform
US4493641A (en) * 1984-01-09 1985-01-15 Gladd Industries, Inc. Bake oven with manifold
US5062249A (en) * 1989-07-20 1991-11-05 Smagner John D Furnace crown means and method
US5357540A (en) * 1992-08-28 1994-10-18 Merkle Engineers Inc. High temperature industrial furnace roof structure
US6427610B1 (en) * 2000-10-11 2002-08-06 Merkle Engineers, Inc. High temperature industrial furnace roof structure
FR2834549B1 (en) * 2002-01-09 2005-06-24 Ceric IMPROVEMENT TO CERAMIC COOKTOP PLATES

Also Published As

Publication number Publication date
DE602007002965D1 (en) 2009-12-10
FR2906354B1 (en) 2008-12-05
EP1906125A1 (en) 2008-04-02
US7950922B2 (en) 2011-05-31
ATE447152T1 (en) 2009-11-15
US20080076085A1 (en) 2008-03-27
FR2906354A1 (en) 2008-03-28

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