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 PDFInfo
- 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
- Authority
- EP
- European Patent Office
- Prior art keywords
- rod
- winding
- layers
- module according
- module
- 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.)
- Ceased
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/62—Heating elements specially adapted for furnaces
- H05B3/66—Supports 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
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
- 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
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
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
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
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
Claims (8)
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 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0035944A1 true EP0035944A1 (en) | 1981-09-16 |
Family
ID=9239388
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP81400352A Ceased EP0035944A1 (en) | 1980-03-06 | 1981-03-06 | Furnace lining module, and method to maintain a winding against such a module |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0035944A1 (en) |
FR (1) | FR2477690B1 (en) |
Cited By (4)
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)
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 |
-
1980
- 1980-03-06 FR FR8005048A patent/FR2477690B1/en not_active Expired
-
1981
- 1981-03-06 EP EP81400352A patent/EP0035944A1/en not_active Ceased
Patent Citations (5)
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)
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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Legal Events
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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 |
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AK | Designated contracting states |
Designated state(s): AT BE CH DE GB IT NL SE |
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17P | Request for examination filed |
Effective date: 19811002 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
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18R | Application refused |
Effective date: 19831202 |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: ROUVEYRE, JEAN Inventor name: ROUVEYRE, ALAIN |