EP0035944A1 - Furnace lining module, and method to maintain a winding against such a module - Google Patents

Furnace lining module, and method to maintain a winding against such a module Download PDF

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Publication number
EP0035944A1
EP0035944A1 EP81400352A EP81400352A EP0035944A1 EP 0035944 A1 EP0035944 A1 EP 0035944A1 EP 81400352 A EP81400352 A EP 81400352A EP 81400352 A EP81400352 A EP 81400352A EP 0035944 A1 EP0035944 A1 EP 0035944A1
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EP
European Patent Office
Prior art keywords
rod
winding
layers
module according
module
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Ceased
Application number
EP81400352A
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German (de)
French (fr)
Inventor
Jean Rouveyre
Alain Rouveyre
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Fours Mgr Sa Dite Ste
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Fours Mgr Sa Dite Ste
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Application filed by Fours Mgr Sa Dite Ste filed Critical Fours Mgr Sa Dite Ste
Publication of EP0035944A1 publication Critical patent/EP0035944A1/en
Ceased legal-status Critical Current

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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/62Heating elements specially adapted for furnaces
    • H05B3/66Supports or mountings for heaters on or in the wall or roof

Definitions

  • the present invention relates to modules made of fibrous materials, used for lining the walls of electric ovens, using, as heat emitter, resistors in extruded wire or in ribbon with small turns.
  • the modules sold are rectangular in shape with a square base and a variable height depending on the temperature of the hot surface.
  • Their assembly consists of a stack of small sections of fibrous layers (or of a ply with multiple plies), which are pressed, then strapped to maintain pressure.
  • the first solution limits the size of the ovens; the second complicates the lining and increases its thermal inertia and heat losses.
  • the invention overcomes these drawbacks, by making it possible to use only fibrous materials, which increases the thermal efficiency of the ovens and simplifies the positioning of the lining, by an oven lining module made up of layers of fibrous material, superimposed in a stack compressed in a direction of compression, characterized in that, among these layers, there is at least one which protrudes from the stack in a direction substantially perpendicular to that of compression by an uncompressed extension.
  • Figure 4 is a perspective view of a rod for holding in place a resistant winding.
  • a long sheet 1 of alumina fibers is folded in accordion fashion, so that the faces of the layers 2 formed are adjacent to each other and so that the third, ninth and fifteenth folds include a tube 3 made of alumina fibers or another material, possibly not very compressible and protrude horizontally from the stack in extensions forming three tubes 4 connecting the two layers from which they come and being on the laboratory side.
  • the stack instead of being constituted by an accordion-like tablecloth, is constituted by a succession of layers 2 not connected by folds, except in three places where the extensions of certain adjacent layers form strands 4.
  • FIG. 4 represents an element for perfecting the maintenance of the helical electrical resistances 6, when the modules line the walls subjected to vibrations.
  • This element consists of a rod 7 terminated on the one hand by a hook 8 in the form of a hook and on the other hand by a spiral winding 9 making it possible to mount the rod 7 in rotation on a winding 6 of electrical resistance.
  • the rod 7 and the winding 6 are made of metal wire of the same kind and same section.
  • the rod 7 is rotatably mounted on the winding 6 via the winding 9, the winding 6 is placed between the flange 4 and a layer being above that which protrudes, the rod 7 is rotated in one direction until the hook 8 stings in a layer and one continues to rotate the rod 7 in the same direction so as to anchor the hook in the layers following the direction of compression.

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  • Furnace Details (AREA)

Abstract

The electrical resistors (6) are carried by ledges set up between the stack of compressed layers of fibrous material and beading (4) which juts out from this stack and is not compressed. <IMAGE>

Description

La présente invention concerne des modules en matériaux fibreux, utilisés pour le garnissage des parois de fours électriques, employant, comme émetteur calorifique, des résistances en fil boudiné ou en ruban à petites spires.The present invention relates to modules made of fibrous materials, used for lining the walls of electric ovens, using, as heat emitter, resistors in extruded wire or in ribbon with small turns.

Les modules commercialisés sont de forme parallèlépipédique à base carrée et à hauteur variable en fonction de la température de la face chaude.The modules sold are rectangular in shape with a square base and a variable height depending on the temperature of the hot surface.

Leur assemblage consiste dans un empilage de petites sections de couches fibreuses (ou d'une nappe à plis multiples), lesquelles sont pressées, puis sanglées pour le maintien en pression.Their assembly consists of a stack of small sections of fibrous layers (or of a ply with multiple plies), which are pressed, then strapped to maintain pressure.

L'emploi de nappes en matériaux fibreux pour le garnissage des parois de fours électriques se heurte à la difficulté de l'implantation des résistances émettrices sur les faces verticales.The use of sheets of fibrous materials for lining the walls of electric ovens comes up against the difficulty of installing emitting resistors on the vertical faces.

Actuellement, on résout cette difficulté soit par l'inclusion, par moulage sous vide, des résistances dans la face chaude des blocs fibreux, soit par l'interposition de murets supports en matériaux réfractaires céramisés porteurs de tubes de même qualité sur lesquels est placé le fil résistant.Currently, this difficulty is solved either by the inclusion, by vacuum molding, of resistances in the hot face of the fibrous blocks, or by the interposition of low walls of refractory ceramized materials carrying tubes of the same quality on which is placed the resistant wire.

La première solution limite la dimension des fours ; la seconde complique le garnissage et en augmente l'inertie thermique et les déperditions calorifiques.The first solution limits the size of the ovens; the second complicates the lining and increases its thermal inertia and heat losses.

L'invention remédie à ces inconvénients, en permettant de n'utiliser que des matériaux fibreux, ce qui augmente le rendement thermique des fours et simplifie la mise en place du garnissage, par un module de garnissage de four constitué de couches en matière fibreuse, superposées en une pile comprimée suivant une direction de compression, caractérisé en ce que, parmi ces couches, il en est au moins une qui dépasse de la pile suivant une direction sensiblement perpendiculaire à celle de compression par un prolongement non comprimé.The invention overcomes these drawbacks, by making it possible to use only fibrous materials, which increases the thermal efficiency of the ovens and simplifies the positioning of the lining, by an oven lining module made up of layers of fibrous material, superimposed in a stack compressed in a direction of compression, characterized in that, among these layers, there is at least one which protrudes from the stack in a direction substantially perpendicular to that of compression by an uncompressed extension.

Ainsi se trouve réalisées entre les prolongements et la couche adjacente supérieure des corniches en pente, inclinées des prolongements vers la pile, sur lesquelles les résistances métalliques trouvent logement et support.Thus is made between the extensions and the upper adjacent layer of the sloping cornices, inclined extensions to the stack, on which the metal resistors find housing and support.

Suivant une variante préférée, on intercale dans la pile de couches une nappe de plus grande dimension pliée par moitié avec dépose à l'intérieur du pli d'une bande de fibre de même qualité ou d un tube céramique.According to a preferred variant, there is interposed in the stack of layers a sheet of larger dimension folded in half with depositing inside the fold of a strip of fiber of the same quality or of a ceramic tube.

Lors du pressage de l'ensemble dès couches multiples, s'effectuant seulement par la surface de couches de moindre dimension, il se forme un boudin sur la partie libre de compression des nappes en surlongueur. Ce boudin, en saillie de la face chaude, forme une gouttière dans laquelle peuvent être déposées les résistances boudinées, qui sont ainsi d'autant mieux maintenues que le tube céramique impose au boudin une forme arrondie et s'oppose à son affaisement.During the pressing of the assembly from multiple layers, effected only by the surface of smaller layers, a roll is formed on the free compression part of the plies in excess length. This tube, projecting from the hot face, forms a gutter in which can be deposited the coil resistances, which are thus all the better maintained as the ceramic tube imposes on the tube a rounded shape and opposes its collapse.

Aux dessins annexés, donnés uniquement à titre d'exemple :

  • Les figures 1 et 2 sont des vues en coupe de deux modules suivant l'invention avant compression.
  • La figure 3 est une vue en perspective de deux modules jointifs constituant une partie d'un garnissage de four à résistance électrique, et
In the accompanying drawings, given solely by way of example:
  • Figures 1 and 2 are sectional views of two modules according to the invention before compression.
  • Figure 3 is a perspective view of two adjoining modules forming part of a lining of an electric resistance oven, and

La figure 4 est une vue en perspective d'une tige de maintien en place d'un enroulement résistant.Figure 4 is a perspective view of a rod for holding in place a resistant winding.

Le long de la paroi P verticale d'un four, on plie en accordéon une longue nappe 1 en fibres d'alumine, de manière à ce que les faces des couches 2 formées soient adjacentes entre elles et à ce que les troisième, neuvième et quinzième plis incluent un tube 3 en fibres d'alumine ou en un autre matériau, éventuellement peu compressible et dépassent horizontalement de la pile en des prolongements formant trois boudins 4 raccordant les deux couches dont ils sont issus et se trouvant du côté du laboratoire.Along the vertical wall P of an oven, a long sheet 1 of alumina fibers is folded in accordion fashion, so that the faces of the layers 2 formed are adjacent to each other and so that the third, ninth and fifteenth folds include a tube 3 made of alumina fibers or another material, possibly not very compressible and protrude horizontally from the stack in extensions forming three tubes 4 connecting the two layers from which they come and being on the laboratory side.

A la figure 2 la pile, au lieu d'être constituée par une nappe en accordéon, est constituée par une succession de couches 2 non raccordées par des plis, sauf en trois endroits où les prolongements de certaines couches adjacentes forment des boudins 4.In FIG. 2, the stack, instead of being constituted by an accordion-like tablecloth, is constituted by a succession of layers 2 not connected by folds, except in three places where the extensions of certain adjacent layers form strands 4.

On place les piles dans une forme et on les comprime suivant la verticale. Puis à l'aide de sangles 5 (figure 3), on maintient la compression. Comme celle-ci ne s'exerce pas sur les boudins 4, chacun de ceux-ci reste décomprimé et crée entre lui et la couche supérieure adjacente à celle qui est munie du prolongement un logement pour une résistance 6 électrique.The piles are placed in a form and they are compressed vertically. Then using straps 5 (Figure 3), the compression is maintained. As this is not exerted on the tubes 4, each of these remains decompressed and creates between it and the upper layer adjacent to that which is provided with the extension a housing for an electrical resistance 6.

La figure 4 représente un élément pour parfaire le maintien des résistances 6 électriques hélicoïdales, lorsque les modules garnissent des parois soumises à des vibrations. Cet élément se compose d'une tige 7 terminée d'une part par un crochet 8 en forme d'hameçon et d'autre part par un enroulement 9 en spirale permettant de monter la tige 7 à rotation sur un enroulement 6 de résistance électrique. La tige 7 et l'enroulement 6 sont en fil métallique de même nature et de même section.FIG. 4 represents an element for perfecting the maintenance of the helical electrical resistances 6, when the modules line the walls subjected to vibrations. This element consists of a rod 7 terminated on the one hand by a hook 8 in the form of a hook and on the other hand by a spiral winding 9 making it possible to mount the rod 7 in rotation on a winding 6 of electrical resistance. The rod 7 and the winding 6 are made of metal wire of the same kind and same section.

Pour maintenir l'enroulement 6 contre la face verticale du module de garnissage, on monte la tige 7 à rotation sur l'enroulement 6 par l'intermédiaire de l'enroulement 9, on place l'enroulement 6 entre le boudin 4 et une couche se trouvant au-dessus de celle qui dépasse, on fait tourner la tige 7 dans un sens jusqu'à ce que le crochet 8 se pique dans une couche et on continue à faire tourner la tige 7 dans le même sens de manière à ancrer le crochet dans les couches suivant la direction de compression.To maintain the winding 6 against the vertical face of the packing module, the rod 7 is rotatably mounted on the winding 6 via the winding 9, the winding 6 is placed between the flange 4 and a layer being above that which protrudes, the rod 7 is rotated in one direction until the hook 8 stings in a layer and one continues to rotate the rod 7 in the same direction so as to anchor the hook in the layers following the direction of compression.

Claims (8)

1. Module de garnissage de four, constitué de couches en matière fibreuse, superposées en une pile, comprimée suivant une direction de compression, caractérisé en ce que, parmi ces couches, il en est au moins une qui dépasse de la pile suivant une direction sensiblement perpendiculaire à celle de compression par un prolongement non comprimé.1. Oven lining module, consisting of layers of fibrous material, superimposed in a stack, compressed in a compression direction, characterized in that, among these layers, there is at least one which protrudes from the stack in a direction substantially perpendicular to that of compression by an uncompressed extension. 2. Module suivant la revendication 1, caractérisé en ce que, parmi ces couches, il en est au moins deux, adjacentes, qui dépassent de la pile suivant une direction sensiblement perpendiculaire à celle de compression par un prolongement formant boudin qui raccorde ces deux couches l'une à l'autre.2. Module according to claim 1, characterized in that, among these layers, there are at least two, adjacent, which protrude from the stack in a direction substantially perpendicular to that of compression by an extension forming a rod which connects these two layers to each other. 3. Module suivant la revendication 2, caractérisé en ce que le boudin entoure un tube.3. Module according to claim 2, characterized in that the tube surrounds a tube. 4. Module suivant l'une des revendications 1 à 3, caractérisé par un enroulement de résistance électrique maintenu entre le prolongement et une couche se trouvant au-dessus de celle qui dépasse.4. Module according to one of claims 1 to 3, characterized by an electrical resistance winding maintained between the extension and a layer lying above that which protrudes. 5. Module suivant l'une des revendications 1 à 4 caractérisé par une tige, munie à l'une des extrémités d'un organe permettant de monter la tige à rotation sur un enroulement et à l'autre extrémité d'un crochet en forme d'hameçon accroché dans une couche.5. Module according to one of claims 1 to 4 characterized by a rod, provided at one end of a member for mounting the rotary rod on a winding and at the other end of a shaped hook hook hooked in a layer. 6. Module suivant la revendication 5, caractérisé en ce que la tige et l'enroulement sont en un fil métallique de même nature.6. Module according to claim 5, characterized in that the rod and the winding are made of a metallic wire of the same kind. 7. Module suivant la revendication 5 ou 6, caractérisé en ce que la tige et l'enroulement sont en un fil métallique de même section.7. Module according to claim 5 or 6, characterized in that the rod and the winding are in a metal wire of the same section. 8. Procédé pour maintenir un enroulement contre un module de garnissage suivant la revendication 5, 6 ou 7, caractérisé en ce qu'il consiste à monter la tige à rotation sur l'enroulement, à placer l'enroulement entre le prolongement et une couche se trouvant au-dessus de celle qui dépasse, à faire tourner la tige dans un sens jusqu'à ce que le crochet se pique dans une couche et à continuer à faire tourner la tige dans le même sens, notamment d'un quart de tour environ, de manière à ancrer le crochet dans les couchée.8. Method for maintaining a winding against a packing module according to claim 5, 6 or 7, characterized in that it consists in mounting the rod in rotation on the winding, in placing the winding between the extension and a layer lying above that which protrudes, in rotating the rod in one direction until the hook stings in a layer and continue to rotate the rod in the same direction, in particular by a quarter of a turn, so as to anchor the hook in the layers.
EP81400352A 1980-03-06 1981-03-06 Furnace lining module, and method to maintain a winding against such a module Ceased EP0035944A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8005048 1980-03-06
FR8005048A FR2477690B1 (en) 1980-03-06 1980-03-06 OVEN TRIMMING MODULE AND METHOD FOR MAINTAINING A WINDING AGAINST SUCH A MODULE

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EP0035944A1 true EP0035944A1 (en) 1981-09-16

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EP81400352A Ceased EP0035944A1 (en) 1980-03-06 1981-03-06 Furnace lining module, and method to maintain a winding against such a module

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FR (1) FR2477690B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0122069A1 (en) * 1983-03-16 1984-10-17 Arthur Hayes Improved heating chamber having electrical heating elements
EP0758191A2 (en) * 1995-08-09 1997-02-12 Abb K.K. Deglor furnace
CN100398966C (en) * 1999-12-01 2008-07-02 上海交通大学 Method for decreasing heat loss caused by grate bricks in industrial furnace
US20100163554A1 (en) * 2005-03-31 2010-07-01 Bharat Heavy Electricals Limited Rapid and homogenous heat treatment of large metallic sample using high power microwaves

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1690678A (en) * 1924-01-23 1928-11-06 American Metallurg Corp Electric resistance furnace
FR2216843A5 (en) * 1973-02-07 1974-08-30 Prod Refractaires Ste Gle
US4088825A (en) * 1976-08-04 1978-05-09 General Electric Company Electric furnace wall construction
FR2382662A1 (en) * 1977-03-04 1978-09-29 Sauder Industries METHOD AND APPARATUS FOR SUPPORTING ELEMENTS IN A THERMALLY INSULATED ENCLOSURE, IN PARTICULAR IN AN OVEN OR A REFRIGERATION COMPARTMENT
FR2388197A1 (en) * 1977-04-21 1978-11-17 Bertin & Cie Modules of aluminium silicate for insulating furnace walls - are built up from folded layers of fibres

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1690678A (en) * 1924-01-23 1928-11-06 American Metallurg Corp Electric resistance furnace
FR2216843A5 (en) * 1973-02-07 1974-08-30 Prod Refractaires Ste Gle
US4088825A (en) * 1976-08-04 1978-05-09 General Electric Company Electric furnace wall construction
FR2382662A1 (en) * 1977-03-04 1978-09-29 Sauder Industries METHOD AND APPARATUS FOR SUPPORTING ELEMENTS IN A THERMALLY INSULATED ENCLOSURE, IN PARTICULAR IN AN OVEN OR A REFRIGERATION COMPARTMENT
FR2388197A1 (en) * 1977-04-21 1978-11-17 Bertin & Cie Modules of aluminium silicate for insulating furnace walls - are built up from folded layers of fibres

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0122069A1 (en) * 1983-03-16 1984-10-17 Arthur Hayes Improved heating chamber having electrical heating elements
EP0758191A2 (en) * 1995-08-09 1997-02-12 Abb K.K. Deglor furnace
EP0758191A3 (en) * 1995-08-09 1997-05-28 Abb Kk Deglor furnace
CN100398966C (en) * 1999-12-01 2008-07-02 上海交通大学 Method for decreasing heat loss caused by grate bricks in industrial furnace
US20100163554A1 (en) * 2005-03-31 2010-07-01 Bharat Heavy Electricals Limited Rapid and homogenous heat treatment of large metallic sample using high power microwaves
US8344301B2 (en) * 2005-03-31 2013-01-01 Bharat Heavy Electricals Limited Rapid and homogenous heat treatment of large metallic sample using high power microwaves

Also Published As

Publication number Publication date
FR2477690B1 (en) 1985-08-09
FR2477690A1 (en) 1981-09-11

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