[go: up one dir, main page]

EP0044787A1 - Furnace with interchangeable heating walls for the heat treatment of glass sheets - Google Patents

Furnace with interchangeable heating walls for the heat treatment of glass sheets Download PDF

Info

Publication number
EP0044787A1
EP0044787A1 EP19810401146 EP81401146A EP0044787A1 EP 0044787 A1 EP0044787 A1 EP 0044787A1 EP 19810401146 EP19810401146 EP 19810401146 EP 81401146 A EP81401146 A EP 81401146A EP 0044787 A1 EP0044787 A1 EP 0044787A1
Authority
EP
European Patent Office
Prior art keywords
elements
wall
oven according
oven
fixed
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.)
Granted
Application number
EP19810401146
Other languages
German (de)
French (fr)
Other versions
EP0044787B1 (en
Inventor
Rolf Basten
Werner Pagel
Mario Roth
Walter Schamberg
Hans Peter Siemonsen
Josef Willems
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.)
Vegla Vereinigte Glaswerke GmbH
Saint Gobain Vitrage SA
Original Assignee
Vegla Vereinigte Glaswerke GmbH
Saint Gobain Vitrage SA
Saint Gobain Vitrage International SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Vegla Vereinigte Glaswerke GmbH, Saint Gobain Vitrage SA, Saint Gobain Vitrage International SA filed Critical Vegla Vereinigte Glaswerke GmbH
Publication of EP0044787A1 publication Critical patent/EP0044787A1/en
Application granted granted Critical
Publication of EP0044787B1 publication Critical patent/EP0044787B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/14—Supports for linings
    • F27D1/145—Assembling elements
    • 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
    • F27B17/00—Furnaces of a kind not covered by any of groups F27B1/00 - F27B15/00
    • F27B17/0016—Chamber type furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/14—Supports for linings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D2001/0059—Construction elements of a furnace
    • F27D2001/0066—Movable or removable parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0006—Electric heating elements or system
    • F27D2099/0008—Resistor heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D2099/0058—Means for heating the charge locally
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D2099/006—Auxiliary heating, e.g. in special conditions or at special times

Definitions

  • the invention relates to an oven for the thermal treatment of glass sheets, in particular an oven intended to bring these sheets to the bending and / or tempering temperature.
  • Such ovens generally consist of a frame in sections on which are fixed plates consisting of an insulating body carrying electrical heating elements.
  • the glass sheets can be treated in a horizontal position or in a vertical position.
  • they are conveyed either on a trolley which crosses the furnace, or directly on carrier rollers, or a gas cushion; the heating elements are arranged either in the roof of the oven, or under this roof.
  • the sheet is generally suspended from hanging clips supported by a mobile carriage on a rail located above the oven; the heating elements are then placed on the vertical walls of the oven opposite the glass sheets.
  • the interchangeable elements cover the entire wall, extending over the entire height of the oven; in horizontal direction their length is at least equal to the height. They therefore have large dimensions and a high weight because the insulating wall consists of a refractory material mounted in a frame of corresponding dimensions. Their replacement can only be done with great difficulty.
  • the object of the invention is to improve such an oven with interchangeable elements by making it possible to replace defective elements with a minimum of work and in a very short time.
  • the design of this oven will allow it to be mounted very simply; it will take into account the expansion of the wall elements and will allow them to be adjusted precisely.
  • the oven can be made of light materials and will therefore have, - because of its reduced mass, a low heat capacity, which will make it easier to adjust.
  • the oven according to the invention is such that at least one of its walls is made up of a set of elements of small dimension relative to the surface. of the wall, each of which is formed of a plate provided on its rear face with a support member, several of these elements being slidably fixed by their support member on the same carrier rail running all along the wall , a number of supporting rails supporting the corresponding wall elements being fixed on the framework of the furnace in a removable manner and adjustable in position.
  • the various wall elements may, because of their relatively small dimensions, be provided on their rear face with simple support members, and the faces along which the neighboring elements come into contiguous contact may be free of any projecting part. They can therefore be assembled without discontinuity to form the wall of the furnace, without however posing difficulties for their replacement because they are mobile, both in groups forming wall segments integral with a carrier rail, and individually along this rail. It is thus possible to separate the various segments from one another in order to remove one, after having freed from the frame the rail which supports it, without being hindered by the neighboring segments previously spaced apart or damaging the adjacent surfaces. On the carrier rail thus released, it is then possible to unlock the supports of the various elements and to slide them to release them.
  • the carrier rail After replacing the element (s) to be exchanged, the carrier rail is again placed on the frame of the oven. The position of the supporting rails and that of the elements on these rails are then adjusted so as to constitute by juxtaposition of the various elements a continuous wall.
  • a particularly advantageous version is obtained by the use of wall elements, the insulating part of which is a plate made of ceramic fibers.
  • the heating devices can then consist of radiant bodies suspended freely on supports fixed on the insulating plates or incorporated in whole or in part in the insulating plates.
  • Such ceramic fiber wall elements have the advantage that, given their very low weight, they can be provided with very simple support devices which leave their lateral faces completely free, thus making it possible to attach them to neighboring elements.
  • the furnace shown in the figures is a quenching furnace for glass sheets suspended from hanging clamps in which these sheets are heated to a temperature close to the softening point.
  • This oven has, in its roof, a slit-shaped passage through which the glass sheet is lowered into the oven, then raised out of the oven as soon as it has reached the desired temperature.
  • Such ovens can also be made in so-called "through” ovens.
  • the glass sheet hanger then moves along the roof slot, thereby transporting the glass sheet lengthwise from the oven.
  • the inlet and outlet walls may then also have a slot for the passage of the glass sheet.
  • the invention relates to the structure of the walls provided with these organs.
  • the oven shown in Figure 1 in its essential parts includes a steel frame composed of horizontal profiles, 1 at the bottom and 2 at the top, vertical profiles 3 at the corner of the large faces of the oven and the end walls. , and of transverse sections 4, connecting the two large faces.
  • a steel frame composed of horizontal profiles, 1 at the bottom and 2 at the top, vertical profiles 3 at the corner of the large faces of the oven and the end walls.
  • transverse sections 4 connecting the two large faces.
  • the assembly thus described composed of the metal frame and the parts of refractory material, sole, roof and end walls, forms a self-supporting structure; it constitutes the framework of the oven, and the heating walls which themselves do not contribute to the stability of the system are arranged between the elements of the framework.
  • the wall openings left free between the elements of the framework are filled with a set of rectangular or square wall elements 12, mounted contiguously. These elements carry, on the face facing the interior of the oven, heating resistors 13 which may be totally or partially incorporated therein, or be suspended from supports in front of this face; they consist of an insulating body of low specific weight and high insulating power.
  • the "FIBROTHAL” (registered trademark) heating modules from the company BULTEN-KANTHAL GmbH are used for this purpose, essentially consisting of a plate of ceramic fibers and which have a very low specific weight of 200 kg / m 3.
  • the heating elements of these modules are resistors incorporated in the front face of the insulating body. Because of their very low mass, the thermal inertia of these modules is extremely reduced, so that an oven made of such elements has a very short heating and cooling time, which makes precise temperature regulation easier. .
  • Each element 12 is provided with a support constituted by a tube 15 joined at one end to a metal plate 16 and at the other end to a sleeve 17.
  • the metal plate 16 is fixed to the wall element 12, preferably by means of a heat resistant lut, this directly on the rear part of the wall element as shown in FIGS. 1 and 4 or by means of an additional insulating body 18 as shown in FIG. 2.
  • the insulating power of the wall element is thus reinforced if necessary.
  • Several wall elements 12 provided with their supports are placed on a profiled support rail 22 by sliding the sleeves 17 of their support along the support rail. When the location of the sleeves on the rail 22 is correct, they are locked by a wing nut 23.
  • the support rails 22 are then arranged vertically against the frame of the furnace so that the wall elements 12 projecting in front of the rail 22 can be introduced at the corresponding location on the wall.
  • the supporting rails 22 can, as shown in FIG. 1, be fixed to the profiles 1 and 2 of the frame by means of screws 24 in slots 25 which allow them to be moved horizontally to ensure correct positioning of the elements wall 12.
  • FIG. 2 Another advantageous embodiment for fixing the vertical support rails 22 on the sections 1 and 2 of the framework of the furnace is shown in FIG. 2.
  • Each carrier rail is provided at its upper and lower ends with a rotary lock 28 actuated by a lever 29.
  • a rotary lock 28 actuated by a lever 29.
  • the bolt 30 of the lock 28 is pressed against the wing of the corresponding section 1 or 2, or else it is released from these profiles if one of the wall elements 12 superimposed on the rail 22 to form the wall segment must be removed for exchange or repair.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Tunnel Furnaces (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Furnace Details (AREA)

Abstract

1. A furnace for heat treatment of glass sheets, particularly for heating these sheets to the temperature required for curving and/or tempering, formed of a framework comprising, especially, intersecting sections to which are fixed wall elements formed of an insulating body carrying electric heating members, the furnace being characterised in that at least one of its walls comprises an assembly of elements (12) of small dimensions relative to the surface area of the wall, each element (12) being formed of a plate provided on its rear surface with a support (15, 16, 17), a plurality of these elements (12) being fixed to slide, by their support (15, 16, 17) on a common carrying rail (22) running along the wall, and a certain number of carrying rails (22) supporting the corresponding wall elements (12) being fixed dismountably and adjustable in position, outside the furnace, on its framework, transversely to the sections of the framework with which they make contact.

Description

L'invention concerne un four pour le traitement thermique de feuilles de verre, en particulier un four destiné à porter ces feuilles à la température de bombage et/ou de trempe. De tels fours sont généralement constitués d'une ossature en profilés sur laquelle sont fixées des plaques constituées d'un corps isolant porteur d'organes de chauffage électrique.The invention relates to an oven for the thermal treatment of glass sheets, in particular an oven intended to bring these sheets to the bending and / or tempering temperature. Such ovens generally consist of a frame in sections on which are fixed plates consisting of an insulating body carrying electrical heating elements.

Les feuilles de verre peuvent y être traitées en position horizontale ou en position verticale. Dans le premier cas, elles sont acheminées soit sur un chariot qui traverse le four, soit directement sur des rouleaux porteurs, soit un coussin gazeux ; les organes chauffants sont disposés soit dans la voûte du four, soit sous cette voûte.The glass sheets can be treated in a horizontal position or in a vertical position. In the first case, they are conveyed either on a trolley which crosses the furnace, or directly on carrier rollers, or a gas cushion; the heating elements are arranged either in the roof of the oven, or under this roof.

Dans le second cas, la feuille est généralement suspendue à des pinces d'accrochage supportées par un chariot mobile sur un rail situé au-dessus du four ; les organes chauffants sont alors placés sur les parois verticales du four en face des feuilles de verre.In the second case, the sheet is generally suspended from hanging clips supported by a mobile carriage on a rail located above the oven; the heating elements are then placed on the vertical walls of the oven opposite the glass sheets.

Il est connu de fabriquer de tels fours de traitement en assemblant, de manière appropriée, une série d'éléments démontables ajustés côte à côte (DE PS 856 499). Pour effectuer les travaux indispensables de réparation ou d'entretien, on peut désolidariser les éléments endommagés, les enlever du four puis les remettre en place après que les travaux nécessaires ont été effectués.It is known to manufacture such treatment ovens by assembling, as appropriate, a series of dismountable elements adjusted side by side (DE PS 856 499). To carry out the essential repair or maintenance work, the damaged elements can be separated, removed from the oven and then put back in place after the necessary work has been carried out.

Dans les fours connus, les éléments interchangeables couvrent l'ensemble de la paroi, s'étendant sur toute la hauteur du four ; en direction horizontale leur longueur est au moins égale à la hauteur. Ils ont donc des dimensions importantes et un poids élevé car la paroi isolante est constituée d'un matériau réfractaire monté dans un cadre de dimensions correspondantes. Leur remplacement ne peut s'effectuer qu'avec de grosses difficultés.In known ovens, the interchangeable elements cover the entire wall, extending over the entire height of the oven; in horizontal direction their length is at least equal to the height. They therefore have large dimensions and a high weight because the insulating wall consists of a refractory material mounted in a frame of corresponding dimensions. Their replacement can only be done with great difficulty.

L'invention a pour objet de perfectionner un tel four à éléments interchangeables en permettant de remplacer les éléments défectueux avec un minimum de travail et dans un temps très court. En outre, la conception de ce four permettra de le monter très simplement ; elle tiendra compte des dilatations des éléments de parois et permettra de régler leur position avec précision. Enfin, le four pourra être construit en matériaux légers et possédera ainsi, -à cause de sa masse réduite, une faible capacité calorifique, ce qui en facilitera le règlage.The object of the invention is to improve such an oven with interchangeable elements by making it possible to replace defective elements with a minimum of work and in a very short time. In addition, the design of this oven will allow it to be mounted very simply; it will take into account the expansion of the wall elements and will allow them to be adjusted precisely. Finally, the oven can be made of light materials and will therefore have, - because of its reduced mass, a low heat capacity, which will make it easier to adjust.

Le four selon l'invention est tel qu'une de ses parois au moins est constituée d'un ensemble d'éléments de petite dimension par rapport à la surface. de la paroi, dont chacun est formé d'une plaque munie sur sa face arrière d'un organe de support, plusieurs de ces éléments étant fixés de manière coulissante par leur organe de support sur un même rail porteur courant tout le long de la paroi, un certain nombre de rails porteurs supportant les éléments de paroi correspondants étant fixés sur l'ossature du four de manière démontable et réglable en position.The oven according to the invention is such that at least one of its walls is made up of a set of elements of small dimension relative to the surface. of the wall, each of which is formed of a plate provided on its rear face with a support member, several of these elements being slidably fixed by their support member on the same carrier rail running all along the wall , a number of supporting rails supporting the corresponding wall elements being fixed on the framework of the furnace in a removable manner and adjustable in position.

Cette solution est excellente .sous l'aspect de l'interchangeabilité des éléments de paroi. Les divers éléments de paroi peuvent, à cause de leurs dimensions relativement faibles, être munis sur leur face arrière d'organes de support simples, et les faces le long desquelles les éléments voisins viennent en contact jointif être exemptes de toute pièce en saillie. Ils peuvent donc s'assembler sans discontinuité pour former la paroi du four, sans pourtant poser de difficultés pour leur remplacement car ils sont mobiles, tant par groupes formant des segments de paroi solidaires d'un rail porteur, qu'individuellement le long de ce rail. On peut ainsi écarter l'un de l'autre les divers segments pour en retirer un, après avoir libéré de l'ossature le rail qui le supporte, sans être gêné par les segments voisins préalablement écartés ni détériorer les surfaces adjacentes. Sur le rail porteur ainsi dégagé, on peut alors débloquer les supports des divers éléments et les faire coulisser pour les dégager.This solution is excellent. Under the aspect of the interchangeability of the wall elements. The various wall elements may, because of their relatively small dimensions, be provided on their rear face with simple support members, and the faces along which the neighboring elements come into contiguous contact may be free of any projecting part. They can therefore be assembled without discontinuity to form the wall of the furnace, without however posing difficulties for their replacement because they are mobile, both in groups forming wall segments integral with a carrier rail, and individually along this rail. It is thus possible to separate the various segments from one another in order to remove one, after having freed from the frame the rail which supports it, without being hindered by the neighboring segments previously spaced apart or damaging the adjacent surfaces. On the carrier rail thus released, it is then possible to unlock the supports of the various elements and to slide them to release them.

Après remplacement du ou des éléments à échanger, le rail porteur est de nouveau mis en place sur l'ossature du four. La position des rails porteurs et celle des éléments sur ces rails sont alors ajustées de manière à constituer par juxtaposition des divers éléments une paroi continue.After replacing the element (s) to be exchanged, the carrier rail is again placed on the frame of the oven. The position of the supporting rails and that of the elements on these rails are then adjusted so as to constitute by juxtaposition of the various elements a continuous wall.

Une version particulièrement avantageuse est obtenue par l'emploi d'éléments de paroi dont la partie isolante est une plaque constituée de fibres céramiques. Les dispositifs chauffants peuvent alors être constitués de corps radiants suspendus librement sur des supports fixés sur les plaques isolantes ou encore incorporés en tout ou en partie dans les plaques isolantes. De tels éléments de parois en fibres céramiques ont l'avantage que, compte tenu de leur poids très réduit, ils peuvent être munis de dispositifs supports très simples qui laissent complètement libres leurs faces latérales, permettant ainsi de les accoler aux éléments voisins.A particularly advantageous version is obtained by the use of wall elements, the insulating part of which is a plate made of ceramic fibers. The heating devices can then consist of radiant bodies suspended freely on supports fixed on the insulating plates or incorporated in whole or in part in the insulating plates. Such ceramic fiber wall elements have the advantage that, given their very low weight, they can be provided with very simple support devices which leave their lateral faces completely free, thus making it possible to attach them to neighboring elements.

D'autres caractéristiques ou avantages de ce nouveau type de fours apparaîtront dans la description détaillée suivante établie en relation avec les figures qui montrent :

  • Figure 1 : une vue perspective avec coupe transversale d'un four à fosse pour le chauffage de feuilles de verre en position verticale.
  • Figure 2 : à plus grande échelle, une coupe montrant la structure et la fixation d'une paroi du four.
  • Figure 3 : une vue latérale d'un four ayant la structure représentée figures 1 et 2.
  • Figure 4 : une variante de support pour un élément de paroi.
Other characteristics or advantages of this new type of ovens will appear in the following detailed description established in relation to the figures which show:
  • Figure 1: a perspective view with cross section of a pit oven for heating glass sheets in a vertical position.
  • Figure 2: on a larger scale, a section showing the structure and fixing of a wall of the oven.
  • Figure 3: a side view of an oven having the structure shown in Figures 1 and 2.
  • Figure 4: a variant of support for a wall element.

Le four représenté sur les figures est un four de trempe de feuilles de verre suspendues à des pinces d'accrochage dans lequel ces feuilles sont réchauffées à une température voisine du point de ramollissement. Ce four présente, dans son toit, un passage en forme de fente à travers lequel la feuille de verre est descendue dans le four, puis remontée hors du four dès qu'elle a atteint la température désirée.The furnace shown in the figures is a quenching furnace for glass sheets suspended from hanging clamps in which these sheets are heated to a temperature close to the softening point. This oven has, in its roof, a slit-shaped passage through which the glass sheet is lowered into the oven, then raised out of the oven as soon as it has reached the desired temperature.

De tels fours peuvent être également réalisés en fours dits "traversants". Le dispositif de suspension de la feuille de verre se déplace alors le long de la fente du toit, transportant ainsi la feuille de verre dans le sens de la longueur du four. Les parois d'entrée et de sortie peuvent alors présenter, elles aussi, une fente pour le passage de la feuille de verre.Such ovens can also be made in so-called "through" ovens. The glass sheet hanger then moves along the roof slot, thereby transporting the glass sheet lengthwise from the oven. The inlet and outlet walls may then also have a slot for the passage of the glass sheet.

Dans tous les cas, seules les parois du four parallèles aux grandes surfaces de la feuille de verre sont munies d'organes chauffants. L'invention se rapporte à la structuré des parois munies de ces organes.In all cases, only the walls of the oven parallel to the large surfaces of the glass sheet are provided with heating elements. The invention relates to the structure of the walls provided with these organs.

Le four représenté figure 1 dans ses parties essentielles comprend une charpente en acier composée de profilés horizontaux, 1 à la partie inférieure et 2 à la partie supérieure, de profilés verticaux 3 à l'angle des grandes faces du four et des parois d'extrémité, et de profilés transversaux 4, raccordant les deux grandes faces. A l'intérieur de cette charpente et sur les profilés 1 est placée la sole 7, en matériau réfractaire. Les parois d'extrémité sont constituées d'un mur 8 en matériau réfractaire. Des blocs réfractaires 9 constituent le toit du four mais ménagent entre eux une fente pour permettre l'introduction de la feuille de verre.The oven shown in Figure 1 in its essential parts includes a steel frame composed of horizontal profiles, 1 at the bottom and 2 at the top, vertical profiles 3 at the corner of the large faces of the oven and the end walls. , and of transverse sections 4, connecting the two large faces. Inside laughing of this frame and on the profiles 1 is placed the sole 7, made of refractory material. The end walls consist of a wall 8 made of refractory material. Refractory blocks 9 constitute the roof of the furnace but form between them a slot to allow the introduction of the glass sheet.

L'ensemble ainsi décrit, composé de la charpente métallique et des parties en matière réfractaire, sole, toit et parois d'extrémité, forme une structure autoporteuse ; il constitue l'ossature du four, et les parois chauffantes qui, elles, ne contribuent pas à la stabilité du système sont disposées entre les éléments de l'ossature.The assembly thus described, composed of the metal frame and the parts of refractory material, sole, roof and end walls, forms a self-supporting structure; it constitutes the framework of the oven, and the heating walls which themselves do not contribute to the stability of the system are arranged between the elements of the framework.

Les ouvertures de paroi laissées libres entre les éléments de l'ossature sont remplies par un ensemble d'éléments de parois rectangulaires ou carrés 12, montés jointifs. Ces éléments portent, sur la face tournée vers l'intérieur du four, des résistances chauffantes 13 qui peuvent y être totalement ou partiellement incorporées, ou se trouver suspendues à des supports devant cette face ; ils sont constitués d'un corps isolant de faible poids spécifique et de pouvoir isolant élevé.The wall openings left free between the elements of the framework are filled with a set of rectangular or square wall elements 12, mounted contiguously. These elements carry, on the face facing the interior of the oven, heating resistors 13 which may be totally or partially incorporated therein, or be suspended from supports in front of this face; they consist of an insulating body of low specific weight and high insulating power.

Dans une version préférée, on utilise à cet effet les modules de chauffage "FIBROTHAL" (marque déposée) de la société BULTEN-KANTHAL GmbH, constitués essentiellement d'une plaque de fibres céramiques et qui présentent un très faible poids spécifique, de 200kg/m3. Les organes chauffants de ces modules sont des résistances incorporées dans la face avant du corps isolant. A cause de leur masse très faible, l'inertie thermique de ces modules est extrêmement réduite si bien qu'un four constitué de tels éléments présente un temps très court de chauffage et de refroidissement, ce qui rend plus facile une régulation précise de la température.In a preferred version, the "FIBROTHAL" (registered trademark) heating modules from the company BULTEN-KANTHAL GmbH are used for this purpose, essentially consisting of a plate of ceramic fibers and which have a very low specific weight of 200 kg / m 3. The heating elements of these modules are resistors incorporated in the front face of the insulating body. Because of their very low mass, the thermal inertia of these modules is extremely reduced, so that an oven made of such elements has a very short heating and cooling time, which makes precise temperature regulation easier. .

Chaque élément 12 est muni d'un support constitué par un tube 15 réuni à une extrémité à une plaque métallique 16 et à l'autre extrémité à un manchon 17.Each element 12 is provided with a support constituted by a tube 15 joined at one end to a metal plate 16 and at the other end to a sleeve 17.

La plaque métallique 16 est fixée à l'élément de paroi 12, de préférence au moyen d'un lut résistant à la chaleur, ceci directement sur la partie arrière de l'élément de paroi ainsi qu'il est représenté sur les figures 1 et 4 ou par l'intermédiaire d'un corps isolant 18 supplémentaire ainsi qu'il est représenté figure 2. Le pouvoir isolant de l'élément de paroi se trouve ainsi renforcé s'il en est besoin.The metal plate 16 is fixed to the wall element 12, preferably by means of a heat resistant lut, this directly on the rear part of the wall element as shown in FIGS. 1 and 4 or by means of an additional insulating body 18 as shown in FIG. 2. The insulating power of the wall element is thus reinforced if necessary.

Pour éviter ou réduire les pertes de chaleur par conduction le long du tube 15, on peut constituer une barrière thermique en subdivisant le tube 15 en deux parties réunies par une pièce intermédiaire 20 (figure 4) en un matériau de très faible conductivité thermique.To avoid or reduce heat loss by conduction along the tube 15, one can constitute a thermal barrier by dividing the tube 15 into two parts joined by an intermediate piece 20 (Figure 4) in a material of very low thermal conductivity.

Plusieurs éléments de paroi 12 munis de leurs supports sont mis en place sur un rail porteur profilé 22 en faisant glisser les manchons 17 de leur support le long du rail porteur. Lorsque l'emplacement des manchons sur le rail 22 est correct, ils sont bloqués par un écrou à oreilles 23. Les rails porteurs 22 sont alors disposés verticalement contre le cadre du four de manière que les éléments de paroi 12 en saillie devant le rail 22 puissent être introduits à l'emplacement correspondant de la paroi. Les rails porteurs 22 peuvent, ainsi qu'il est représenté figure 1, être fixés aux profilés 1 et 2 de l'ossature au moyen de vis 24 dans des lumières 25 qui permettent de les déplacer horizontalement pour assurer une mise en place correcte des éléments de paroi 12.Several wall elements 12 provided with their supports are placed on a profiled support rail 22 by sliding the sleeves 17 of their support along the support rail. When the location of the sleeves on the rail 22 is correct, they are locked by a wing nut 23. The support rails 22 are then arranged vertically against the frame of the furnace so that the wall elements 12 projecting in front of the rail 22 can be introduced at the corresponding location on the wall. The supporting rails 22 can, as shown in FIG. 1, be fixed to the profiles 1 and 2 of the frame by means of screws 24 in slots 25 which allow them to be moved horizontally to ensure correct positioning of the elements wall 12.

Une autre forme avantageuse de réalisation pour la fixation des rails porteurs verticaux 22 sur les profilés 1 et 2 de l'ossature du four est représentée figure 2.Another advantageous embodiment for fixing the vertical support rails 22 on the sections 1 and 2 of the framework of the furnace is shown in FIG. 2.

Chaque rail porteur est muni à ses extrémités supérieure et inférieure d'un verrou rotatif 28 actionné par un levier 29. En tournant le levier 29, on presse le pêne 30 du verrou 28 contre l'aile du profilé 1 ou 2 correspondant, ou bien on le dégage de ces profilés si l'un des éléments de parois 12 superposés sur le rail 22 pour former segment de paroi doit être retiré aux fins d'échange ou de réparation.Each carrier rail is provided at its upper and lower ends with a rotary lock 28 actuated by a lever 29. By turning the lever 29, the bolt 30 of the lock 28 is pressed against the wing of the corresponding section 1 or 2, or else it is released from these profiles if one of the wall elements 12 superimposed on the rail 22 to form the wall segment must be removed for exchange or repair.

Sans qu'il soit besoin d'en donner une description plus complète, il est à remarquer que l'on pourrait également, dans le cadre de l'invention, construire des parois utilisant deux, voire plus de deux couches de matériaux réfractaires, en quinconçant leurs éléments. Il suffit que les supports des éléments de la couche interne, pour at--teindre les rails correspondants, traversent la couche externe à l'emplacement des joints entre les éléments de cette dernière, à travers des dégagements pratiqués sur les côtés des éléments en question.Without the need to give a more complete description, it should be noted that one could also, within the framework of the invention, build walls using two, or even more than two layers of refractory materials, staggering their elements. It is sufficient that the supports of the elements of the internal layer, to reach the corresponding rails, pass through the external layer at the location of the joints between the elements of the latter, through clearances made on the sides of the elements in question. .

Claims (11)

1. Four pour le traitement thermique de feuilles de verre, en particulier pour le chauffage de ces feuilles à la température de bombage et/ou de trempe, constitué d'une ossature sur laquelle sont fixés des éléments de parois formés d'un corps isolant porteur d'organes de chauffage électrique, ce four étant caractérisé en ce qu'une de ses parois au moins est constituée d'un ensemble d'éléments (12) de petites dimensions par rapport à la surface de la paroi, chaque élément (12) étant formé d'une plaque munie sur sa face arrière d'un support (15, 16, 17), plusieurs de ces éléments (12) étant fixés de manière coulissante par leur support (15, 16, 17) sur un même rail porteur (22) qui court le long de la paroi et un certain nombre de rails porteurs (22) supportant les éléments correspondants de paroi (12) étant fixés sur l'ossature du four de manière démontable et réglable en position.1. Oven for the heat treatment of glass sheets, in particular for heating these sheets to the bending and / or tempering temperature, consisting of a framework on which wall elements are formed formed of an insulating body carrying electric heating elements, this oven being characterized in that at least one of its walls consists of a set of elements (12) of small dimensions relative to the surface of the wall, each element (12 ) being formed of a plate provided on its rear face with a support (15, 16, 17), several of these elements (12) being slidably fixed by their support (15, 16, 17) on the same rail carrier (22) which runs along the wall and a number of carrier rails (22) supporting the corresponding wall elements (12) being fixed on the framework of the furnace in a removable manner and adjustable in position. 2. Four selon la revendication 1, caractérisé en ce que les éléments de paroi sont montés simplement jointifs.2. Oven according to claim 1, characterized in that the wall elements are mounted simply contiguous. 3. Four selon une des revendications 1 et 2, caractérisé en ce que les parties de paroi constituées d'éléments démontables (12) sont limitées par des parties fixes (7, 8, 9).3. Oven according to one of claims 1 and 2, characterized in that the wall parts made of removable elements (12) are limited by fixed parts (7, 8, 9). 4. Four selon l'une des revendications 1 et 3, caractérisé en ce que les rails porteurs (22) sont fixés sur les profilés (1, 2) de l'ossature du four par un organe presseur à levier.4. Oven according to one of claims 1 and 3, characterized in that the support rails (22) are fixed on the profiles (1, 2) of the frame of the oven by a lever pressing member. 5. Four selon l'une des revendications 1 à 4, caractérisé en ce que les supports fixés sur les éléments de paroi (12) comprennent un manchon (17) coulissant sur le rail porteur (22) où il peut être bloqué à la position désirée.5. Oven according to one of claims 1 to 4, characterized in that the supports fixed to the wall elements (12) comprise a sleeve (17) sliding on the carrier rail (22) where it can be locked in position desired. 6. Four selon l'une des revendications 1 à 5, caractérisé en ce que le support est fixé à l'élément de paroi par une plaque métallique (16) collée sur cet élément et reliée à un tube (15).6. Oven according to one of claims 1 to 5, characterized in that the support is fixed to the wall element by a metal plate (16) bonded to this element and connected to a tube (15). 7. Four selon la revendication 6, caractérisé en ce qu'un corps isolant (18) dont les dimensions extérieures sont celles de l'élément de paroi (12) est fixé sur la partie arrière pour porter la plaque métallique (16).7. Oven according to claim 6, characterized in that an insulating body (18) whose external dimensions are those of the wall element (12) is fixed on the rear part to carry the metal plate (16). 8. Four selon l'une des revendications 1 à 7, caractérisé en ce que le support (15, 16, 17) comprend une pièce intermédiaire (20) présentant une faible conductivité thermique.8. Oven according to one of claims 1 to 7, characterized in that the support (15, 16, 17) comprises an intermediate part (20) having a low thermal conductivity. 9. Four selon l'une des revendications 1 à 8, à parois chauffantes verticales, caractérisé par la juxtaposition de segments de parois formés d'éléments (12) montés le long d'un rail porteur (22) disposé verticalement.9. Oven according to one of claims 1 to 8, with vertical heating walls, characterized by the juxtaposition of wall segments formed of elements (12) mounted along a carrier rail (22) arranged vertically. 10. Four selon l'une des revendications 1 à 9, caractérisé en ce que les corps isolants des éléments de paroi (12) sont constitués de fibres céramiques de faible poids spécifique et de pouvoir isolant élevé.10. Oven according to one of claims 1 to 9, characterized in that the insulating bodies of the wall elements (12) consist of ceramic fibers of low specific weight and high insulating power. 11. Four selon l'une des revendications précédentes, caractérisé en ce qu'il possède au moins une paroi composée de plusieurs couches d'éléments quinconcés.11. Oven according to one of the preceding claims, characterized in that it has at least one wall composed of several layers of staggered elements.
EP19810401146 1980-07-21 1981-07-20 Furnace with interchangeable heating walls for the heat treatment of glass sheets Expired EP0044787B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8015999 1980-07-21
FR8015999A FR2487058A1 (en) 1980-07-21 1980-07-21 OVEN WITH INTERCHANGEABLE HEATING WALLS FOR THE THERMAL TREATMENT OF GLASS SHEETS

Publications (2)

Publication Number Publication Date
EP0044787A1 true EP0044787A1 (en) 1982-01-27
EP0044787B1 EP0044787B1 (en) 1985-05-29

Family

ID=9244328

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810401146 Expired EP0044787B1 (en) 1980-07-21 1981-07-20 Furnace with interchangeable heating walls for the heat treatment of glass sheets

Country Status (7)

Country Link
EP (1) EP0044787B1 (en)
JP (1) JPS5751135A (en)
BR (1) BR8104668A (en)
DE (2) DE3128655C2 (en)
ES (1) ES504115A0 (en)
FR (1) FR2487058A1 (en)
YU (1) YU42021B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2561749A1 (en) * 1984-03-23 1985-09-27 Gruenzweig & Hartmann Montage SUPPORT STRUCTURE FOR THERMAL INSULATION OF PLANTS SUCH AS, IN PARTICULAR, STEAM GENERATORS
DE3422342A1 (en) * 1984-03-23 1985-10-03 G + H Montage Gmbh, 6700 Ludwigshafen SUPPORT CONSTRUCTION FOR THERMAL INSULATION
CN103727785A (en) * 2014-01-17 2014-04-16 贵州渝黔实业有限公司 Assembly and assembling method for assembling mobile tunnel kiln
CN118206275A (en) * 2024-05-22 2024-06-18 安徽亿晶包装科技有限公司 Batch quenching clamp for glass cosmetic bottle production

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0336879Y2 (en) * 1984-09-10 1991-08-05
ITRE20070024A1 (en) * 2007-02-27 2008-08-28 Sacmi Forni Spa '' MODULAR TUNNEL OVEN, METHOD AND EQUIPMENT FOR ASSEMBLING THE SAME ''
JP5599492B1 (en) * 2013-06-03 2014-10-01 中外炉工業株式会社 Stud bolt connection member and method for repairing the inner surface of an industrial furnace
CN104120217B (en) * 2014-07-10 2017-05-10 中石化南京工程有限公司 Assembly type thermal treatment heating furnace and constructing method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3363889A (en) * 1966-07-21 1968-01-16 Loftus Engineering Corp Industrial furnace and oven wall
US3958519A (en) * 1975-02-18 1976-05-25 Merkle & Associates, Inc. High temperature furnace construction and hangers therefor
US4045924A (en) * 1975-12-15 1977-09-06 S. J. Agnew Furnace roof construction
US4083155A (en) * 1977-03-14 1978-04-11 Lampert Albert J Thermally insulated enclosure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3363889A (en) * 1966-07-21 1968-01-16 Loftus Engineering Corp Industrial furnace and oven wall
US3958519A (en) * 1975-02-18 1976-05-25 Merkle & Associates, Inc. High temperature furnace construction and hangers therefor
US4045924A (en) * 1975-12-15 1977-09-06 S. J. Agnew Furnace roof construction
US4083155A (en) * 1977-03-14 1978-04-11 Lampert Albert J Thermally insulated enclosure

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2561749A1 (en) * 1984-03-23 1985-09-27 Gruenzweig & Hartmann Montage SUPPORT STRUCTURE FOR THERMAL INSULATION OF PLANTS SUCH AS, IN PARTICULAR, STEAM GENERATORS
DE3422342A1 (en) * 1984-03-23 1985-10-03 G + H Montage Gmbh, 6700 Ludwigshafen SUPPORT CONSTRUCTION FOR THERMAL INSULATION
CN103727785A (en) * 2014-01-17 2014-04-16 贵州渝黔实业有限公司 Assembly and assembling method for assembling mobile tunnel kiln
CN118206275A (en) * 2024-05-22 2024-06-18 安徽亿晶包装科技有限公司 Batch quenching clamp for glass cosmetic bottle production

Also Published As

Publication number Publication date
JPS649248B2 (en) 1989-02-16
FR2487058A1 (en) 1982-01-22
DE3170708D1 (en) 1985-07-04
JPS5751135A (en) 1982-03-25
YU177681A (en) 1983-10-31
DE3128655C2 (en) 1984-12-13
ES8205461A1 (en) 1982-06-16
YU42021B (en) 1988-04-30
DE3128655A1 (en) 1982-06-09
BR8104668A (en) 1982-04-06
FR2487058B1 (en) 1982-10-08
EP0044787B1 (en) 1985-05-29
ES504115A0 (en) 1982-06-16

Similar Documents

Publication Publication Date Title
EP0044787B1 (en) Furnace with interchangeable heating walls for the heat treatment of glass sheets
FR2612917A1 (en) METHOD AND APPARATUS FOR PROFILING GLASS SHEETS, IN PARTICULAR ICE FOR MOTOR VEHICLES
EP0709343B1 (en) Furnace for continuously heating up glass-sheets to their bending and/or tempering temperature
FR2478066A1 (en) METHOD AND DEVICE FOR FORMING GLASS SHEETS USING A DEFORMABLE VACUUM MOLD
EP0240418B1 (en) Method and apparatus for shaping glass
EP0415826B1 (en) Apparatus for bending glass-sheets in a horizontal position
EP0939744B1 (en) Device for cooling convex glass sheets
FR2515166A1 (en) Deformable box mould for shaping glass sheets - has slidable thin plates between flexible opposed sheets
FR2465692A1 (en) METHOD AND DEVICE FOR SHAPING GLASS SHEETS USING MOLDS OF DIFFERENT SHAPES
FR2594114A1 (en) CONVEYOR ROLLER FOR A ROLLER CARRIER IN A GLASS SHEET TREATMENT FACILITY
FR2546506A1 (en) SUPPORT WITH DEFORMABLE DEPRESSION, EQUIPPED WITH HELICAL SPRING SPRINGS, FOR FORMING GLASS SHEETS
EP0044788B1 (en) Furnace for the heating of vertically suspended glass sheets
FR2546503A1 (en) MULTI-CHAMBER VACUUM SUPPORT, USED FOR FORMING GLASS SHEETS, WITH MEANS FOR ISOLATING NEIGHBORING VACUUM CHAMBERS
EP0404677B1 (en) Apparatus for tempering glass-sheets by contact
FR2944345A1 (en) OVEN COMPRISING A THERMAL BARRIER
EP0928284B1 (en) Roller-hearth kiln for heating glazing sheets
EP0048645B1 (en) Electric heating furnace with low thermal inertia
EP0170585A1 (en) Temperature-homogenizing device for continuously moving metallic products
EP2200946B1 (en) Tempering furnace and method comprising several devices for blowing a fluid on the face of a thin member of the glazing type
FR2552754A1 (en) PROCESS FOR PROVIDING COMPLICATED SHAPES TO GLASS SHEETS USING A SPECIAL LIFTING MOLD
FR2714903A1 (en) Rapid cooling of hot glass sheets
FR2606400A1 (en) USE OF A BOMBAGE / TEMPERATURE INSTALLATION FOR THE MANUFACTURE OF GLAZED PLANS OR OF A NON-BOMB GENERAL WAY ON THIS INSTALLATION
EP0148804B1 (en) Oven with beams for the continuous or intermittent fast heating of ceramic articles
FR2888772A1 (en) Infra red radiation welding device for assembling two pieces, has infrared radiation source at preset distance from welding surfaces of pieces while heating surfaces, and masks provided between source and corresponding pieces
FR3111888A1 (en) Bending form of glass sheets comprising a heating circuit and a cooling circuit

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE DE GB IT LU NL SE

17P Request for examination filed

Effective date: 19820712

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: VEGLA VEREINIGTE GLASWERKE GMBH

Owner name: SAINT-GOBAIN VITRAGE

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): BE DE GB IT LU NL SE

REF Corresponds to:

Ref document number: 3170708

Country of ref document: DE

Date of ref document: 19850704

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19860401

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19920618

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19920624

Year of fee payment: 12

Ref country code: BE

Payment date: 19920624

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19920629

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19920731

Year of fee payment: 12

EPTA Lu: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19930720

Ref country code: GB

Effective date: 19930720

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19930721

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19930731

BERE Be: lapsed

Owner name: VEGLA VEREINIGTE GLASWERKE G.M.B.H.

Effective date: 19930731

Owner name: SAINT-GOBAIN VITRAGE

Effective date: 19930731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19940201

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19930720

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
EUG Se: european patent has lapsed

Ref document number: 81401146.6

Effective date: 19940210