EP0331880A1 - Device for supporting electrical heating conductors in industrial furnaces - Google Patents

Device for supporting electrical heating conductors in industrial furnaces Download PDF

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Publication number
EP0331880A1
EP0331880A1 EP89100701A EP89100701A EP0331880A1 EP 0331880 A1 EP0331880 A1 EP 0331880A1 EP 89100701 A EP89100701 A EP 89100701A EP 89100701 A EP89100701 A EP 89100701A EP 0331880 A1 EP0331880 A1 EP 0331880A1
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EP
European Patent Office
Prior art keywords
heating conductor
anchors
armature
heating
deflections
Prior art date
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Granted
Application number
EP89100701A
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German (de)
French (fr)
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EP0331880B1 (en
Inventor
Roland Ing. Grad. Abicht
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ABICHT, ROLAND, ING. GRAD.
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Individual
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Priority to AT89100701T priority Critical patent/ATE96973T1/en
Publication of EP0331880A1 publication Critical patent/EP0331880A1/en
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    • 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 invention relates to a device for holding meandering electrical heating conductors on the hot side of thermally insulating shaped bodies made of ceramic fibers, the heating conductors being held in the areas of their deflections by anchors which are arranged on the shaped bodies.
  • the mouths of two adjacent anchors arranged one behind the other in the longitudinal direction of a heating conductor are opposed to one another directed.
  • the distance between the aforementioned hook-shaped anchors is selected so that the meandering heating conductor can be subsequently attached to the anchors already fastened in the molded body.
  • the object of the invention is to increase the position of the heating conductor with simple means and measures without complicating the anchors acting on the deflections.
  • the solution to this problem is characterized by heat conductor holders arranged between the deflections of the heating conductors and at a distance from the deflections, anchored in the shaped bodies and engaging at least on the sides of the heating conductors facing away from the hot side of the shaped bodies.
  • the heating conductors are only partially or no longer removed from the anchors detected heat conductor deflections are now fixed in the correct position by the heat conductor brackets acting between the heat conductor deflections.
  • the latter prevent that the relatively long sections of the heating conductors located between the heating conductor deflections can bend towards the inside of the furnace, which among other things results in a reduction in the risk of damage to the heating conductors, for example when loading and / or emptying the industrial furnace.
  • heat conductor holders are releasably anchored to the shaped bodies.
  • heat conductor brackets in an electrically insulated manner, at least in the areas of the points which engage the heat conductor, so that electrical short circuits of the heat conductor are avoided by the heat conductor brackets.
  • a preferred design of the heating conductor mounts is characterized in that the latter consist of at least one anchor fastened to the molded body and one bolt fastened to the anchor, the bolts preferably also being detachably fastened to their anchors.
  • a particularly favorable embodiment is characterized in claim 6, wherein the bars can preferably also be held by means of two anchors engaging on the bar ends, so that only one bar would be required for a heating conductor.
  • the anchors of the heating conductor holders are designed to be insertable between two adjacent, straight heating conductor sections, so that the above-mentioned heating conductor holders can also be subsequently arranged on shaped bodies already equipped with heating conductors.
  • the anchors and bolts can be screwed together releasably.
  • a preferred variant is characterized in that the bolts are releasably connected with their anchors in the manner of a bayonet lock.
  • Another variant is characterized by anchors which are firmly inserted into the molded body and on which the bolts are adjustably mounted about the longitudinal axis of the anchors.
  • the elongate heating conductor sections located between the deflections of the heating conductors are each at least non-positively clamped between a bolt and an abutment arranged on an armature, in particular made of electrical insulating material.
  • a variant which is preferred under certain circumstances is characterized in claim 17.
  • a meandering electrical heating conductor 2 is arranged in front of the hot side of a molded body 1 made of ceramic fibers, the feed lines of which are led through the molded body 1 to the outside.
  • the mouths of two anchors 3, which follow one another in the longitudinal extension of the meandering heating conductor 2, are directed in opposite directions.
  • the vertical distance of the armatures 3 from one another is dimensioned such that the heating conductor 2 can first be suspended in the lower armature 3 and then in the upper armature 3.
  • the latter include the heating conductor deflections in each case by more than 180 °.
  • a further heating conductor holder is provided at a distance from the heating conductor deflections 4.
  • This heating conductor holder consists of an elongated bar 5 made of hard ceramic, which engages on the sides of the heating conductor facing away from the hot molded body side, which extends at right angles to the straight heating conductor sections located between the heating conductor deflections 4 and extends over the entire heating conductor 2.
  • the end parts of the bolt 5 are each held with a bolt-like, cylindrical armature 6 made of steel.
  • the latter are each detachably connected to a sleeve 7 made of ceramic, fixed in the molded body 1, in the manner of a bayonet lock.
  • the sleeve 7 has an oval clear cross-section, so that the armature 6 can be pulled out of the position shown in FIG. 3 from the sleeve 7 by rotating through 90 °, in order to be able, for example, to replace the heating conductor 2.
  • the armature 3 and possibly also the armature 6 according to FIG. 9 have a wave-shaped shaft part 8 which is dimensioned such that the upper and lower wave crests on the wall of a cylindrical one according to FIGS. 5 and 6 Support bore 9 without play, so that on the one hand the armature 6 is inevitably held in the correct position relative to the bore 9.
  • the shaft part 8 remains when it is inserted into the bore 9 filled with heat-resistant adhesive 10 over its entire length by the adhesive 10.
  • laterally striving projections 11 and 12 can be integrally formed on the latter, as shown in FIG. 6, which laterally center the armature 3 in the bore 9.
  • FIG. 7 and 8 show a further embodiment of a heating conductor holder, the latch 5 of which engages two adjacent, straight heating conductor sections.
  • a bolt-like anchor 6 engages through the elongated bolt 5 and, like that of FIG. 3, is detachably connected in a bayonet-lock-like manner to a sleeve 7 which is arranged in the molded body 1 in a non-releasable manner.
  • the latch 5 is made of hard ceramic and has a molded-on connecting piece 13 which engages between the two straight heating conductor sections in order to rule out electrical short circuits between the aforementioned heating conductor sections.
  • the outer diameter of the sleeve 7 is smaller than the distance between the two aforementioned heat conductor sections, so that this heat conductor holder can also be attached to a molded body 1 without manipulation.
  • a sleeve-like insert 14 which is supported on the hot side of the molded body 1 and between which and the bolt 5 the aforementioned heating conductor sections are non-positively clamped, is attached to the armature 6, which has a hammer head engaging the bolt 5 with a key attachment .
  • an anchor 6 is permanently attached to the molded body 1. Its end part protruding from the molded body 1 ends in a right-angled bend 15 which is inserted through an elongated opening 16 in the bolt 5 corresponding to the bend 15 can be.
  • the bolt 5 on the armature 6 is rotatable about its longitudinal axis.
  • the opening 16 extends in the direction of its longitudinal extent at right angles to the longitudinal extent of the bolt 5, so that after the bolt 5 has been fitted onto the anchor 6 and the bolt 5 has been rotated by 90 °, the bend 15 on the side facing away from the hot side of the molded body 1 of the bolt 5 supports and then clamps the heat conductor sections between them and an insert 14 'non-positively and releasably.
  • the insert 14 ' has an integrally formed and engaging socket 13 between the straight heating conductor sections.
  • the bar 5 can also extend beyond more than two straight heating conductor sections.
  • the bolt-like anchors 6 can also be designed as a screw and can be arranged to engage directly in the molded body 1. It is also possible to manufacture an anchor 6 and a bolt 5 in one piece from ceramic.

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  • Resistance Heating (AREA)
  • Furnace Details (AREA)

Abstract

In a device for supporting meandering electrical heating conductors on the hot side of thermally insulating moulded bodies, consisting of ceramic fibres, in industrial furnaces, the heating conductors are supported by anchors in the regions of their bends, which anchors are arranged on the moulded bodies. In order to increase the positional security it is proposed that heating conductor supports be provided which are arranged between the bends (4) of the heating conductors (2) and at a distance from the bends (4), said supports being anchored in the moulded bodies (1) and engaging at least on the sides of the heating conductors (2) facing away from the hot side of the moulded bodies (1). <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zur Halterung mäanderförmiger, elektrischer Heiz­leiter an der heißen Seite von thermisch iso­lierenden Formkörpern aus keramischen Fasern, wobei die Heizleiter in den Bereichen ihrer Umlenkungen von Ankern gehalten werden, die an den Formkörpern angeordnet sind.The invention relates to a device for holding meandering electrical heating conductors on the hot side of thermally insulating shaped bodies made of ceramic fibers, the heating conductors being held in the areas of their deflections by anchors which are arranged on the shaped bodies.

Aus der betrieblichen Praxis ist es bekannt, mäanderförmige Heizleiter in den Bereichen ihrer Umlenkungen an hakenförmigen Ankern zu haltern.It is known from operational practice to hold meandering heating conductors in the areas of their deflections on hook-shaped anchors.

Dabei sind die Mäuler zweier benachbarter, in Längserstreckung eines Heizleiters hinter­einander angeordneter Anker einander entgegen­ gerichtet. Zudem ist der Abstand der vorge­nannten, hakenförmigen Anker so gewählt, daß der mäanderförmige Heizleiter an die bereits im Formkörper befestigten Anker nachträglich ange­hängt werden kann.The mouths of two adjacent anchors arranged one behind the other in the longitudinal direction of a heating conductor are opposed to one another directed. In addition, the distance between the aforementioned hook-shaped anchors is selected so that the meandering heating conductor can be subsequently attached to the anchors already fastened in the molded body.

Hierbei besteht aber der Nachteil, daß die Lage­sicherheit eines Heizleiters, insbesondere bei Anordnung des Heizleiters an der Ofendecke, zu­mindest gefährdet ist, weil sich der Heizleiter infolge Erwärmung bleibend verlängert und dann die Heizleiter-Umlenkungen aus den hakenförmigen Ankern herausrutschen können.However, there is the disadvantage that the positional safety of a heating conductor, in particular when the heating conductor is arranged on the furnace ceiling, is at least endangered because the heating conductor is permanently lengthened as a result of heating and the heating conductor deflections can then slide out of the hook-shaped anchors.

Aufgabe der Erfindung ist es nun mit einfachen Mitteln und Maßnahmen die Lagesicherheit der Heizleiter zu erhöhen, ohne die an den Umlenkungen angreifenden Anker zu komplizieren.The object of the invention is to increase the position of the heating conductor with simple means and measures without complicating the anchors acting on the deflections.

Die Lösung dieser Aufgabe kennzeichnet sich durch zwischen den Umlenkungen der Heizleiter und mit Abstand von den Umlenkungen angeordnete, in den Formkörpern verankerte und mindestens an den der heißen Seite der Formkörper abgewandten Seiten der Heizleiter angreifende Heizleiter-Halterungen.The solution to this problem is characterized by heat conductor holders arranged between the deflections of the heating conductors and at a distance from the deflections, anchored in the shaped bodies and engaging at least on the sides of the heating conductors facing away from the hot side of the shaped bodies.

Durch diese Maßnahmen werden die Heizleiter auch bei nur teilweise oder nicht mehr von den Ankern erfaßten Heizleiter-Umlenkungen nunmehr von den zwischen den Heizleiter-Umlenkungen angreifenden Heizleiter-Halterungen lagerichtig fixiert. Zudem verhindern letztere, daß die zwischen den Heiz­leiter-Umlenkungen befindlichen und relativ langen Abschnitte der Heizleiter sich zum Ofeninneren hin durchbiegen können, woraus unter anderem eine Verringerung der Gefahr einer Beschädigung der Heiz­leiter z.B. beim Beschicken und/oder Entleeren des Industrieofens resultiert.Through these measures, the heating conductors are only partially or no longer removed from the anchors detected heat conductor deflections are now fixed in the correct position by the heat conductor brackets acting between the heat conductor deflections. In addition, the latter prevent that the relatively long sections of the heating conductors located between the heating conductor deflections can bend towards the inside of the furnace, which among other things results in a reduction in the risk of damage to the heating conductors, for example when loading and / or emptying the industrial furnace.

Ferner ist es vorteilhaft, wenn die Heizleiter-­Halterungen an den Formkörpern lösbar verankert sind.It is also advantageous if the heat conductor holders are releasably anchored to the shaped bodies.

Hierdurch ist es möglich, die Heizleiter auszuwechseln.This makes it possible to replace the heating conductor.

Zudem ist es vorteilhaft, die Heizleiter-Halterungen zumindest in den Bereichen der am Heizleiter an­greifenden Stellen elektrisch isoliert auszubilden, so daß elektrische Kurzschlüsse des Heizleiters durch die Heizleiter-Halterungen vermieden werden.In addition, it is advantageous to design the heat conductor brackets in an electrically insulated manner, at least in the areas of the points which engage the heat conductor, so that electrical short circuits of the heat conductor are avoided by the heat conductor brackets.

Eine bevorzugte Gestaltung der Heizleiter-Halterungen ist dadurch gekennzeichnet, daß letztere aus mindestens einem am Formkörper befestigten Anker und einem am Anker gehalterten Riegel bestehen, wobei vorzugs­weise zudem die Riegel an ihren Ankern lösbar be­festigt sind.A preferred design of the heating conductor mounts is characterized in that the latter consist of at least one anchor fastened to the molded body and one bolt fastened to the anchor, the bolts preferably also being detachably fastened to their anchors.

Hierzu ist eine besonders günstige Ausführungs­form im Anspruch 6 gekennzeichnet, wobei vorzugs­weise ferner die Riegel mittels zweier an den Riegelenden angreifender Anker gehaltert sein können, so daß für einen Heizleiter nur ein Riegel erforderlich wäre.For this purpose, a particularly favorable embodiment is characterized in claim 6, wherein the bars can preferably also be held by means of two anchors engaging on the bar ends, so that only one bar would be required for a heating conductor.

Eine bevorzugte Ausführungsform, die bei einfacher Riegelform eine hohe Lagesicherheit der Heizleiter auch bei Verwendung von gewölbten Formkörpern sicher­stellt, ist im Anspruch 7 offenbart.A preferred embodiment, which ensures a high positional stability of the heating conductors even when using curved shaped bodies, is disclosed in claim 7.

Bei alledem ist es noch vorteilhaft, wenn die Anker der Heizleiter-Halterungen zwischen zwei benach­barten, geraden Heizleiter-Abschnitten hindurch­steckbar ausgebildet sind, so daß vorgenannte Heizleiter-Halterungen ohne Manipulationen auch nachträglich an bereits mit Heizleitern bestückten Formkörpern angeordnet werden können.In all of this, it is also advantageous if the anchors of the heating conductor holders are designed to be insertable between two adjacent, straight heating conductor sections, so that the above-mentioned heating conductor holders can also be subsequently arranged on shaped bodies already equipped with heating conductors.

Dabei können die Anker und Riegel lösbar mit­einander verschraubt werden.The anchors and bolts can be screwed together releasably.

Hierzu kennzeichnet sich eine bevorzugte Variante dadurch, daß die Riegel mit ihren Ankern bajonett­verschlußartig lösbar verbunden sind.For this purpose, a preferred variant is characterized in that the bolts are releasably connected with their anchors in the manner of a bayonet lock.

Hierzu ist eine bevorzugte Ausführungsform im Anspruch 11 offenbart.For this purpose, a preferred embodiment is disclosed in claim 11.

Es ist aber auch möglich, die Anker jeweils mit einer im Formkörper befestigten Buchse lösbar, insbesondere bajonettverschlußartig zu verbinden.However, it is also possible to releasably connect the anchors to a socket fastened in the molded body, in particular in the manner of a bayonet lock.

Eine weitere Variante kennzeichnet sich durch in den Formkörper fest eingefügte Anker, an welchen die Riegel um die Längsachse der Anker einstellbar gelagert sind.Another variant is characterized by anchors which are firmly inserted into the molded body and on which the bolts are adjustably mounted about the longitudinal axis of the anchors.

Zur weiteren Erhöhung der Lagesicherheit ist es vorteilhaft, wenn die zwischen den Umlenkungen der Heizleiter befindlichen, länglichen Heiz­leiter-Abschnitte jeweils zwischen einem Riegel und einem an einem Anker angeordneten Wider­lager, insbesondere aus elektrischem Isolierstoff zumindest kraftschlüssig einspannbar ausgebildet ist.To further increase the positional security, it is advantageous if the elongate heating conductor sections located between the deflections of the heating conductors are each at least non-positively clamped between a bolt and an abutment arranged on an armature, in particular made of electrical insulating material.

Bei in die Formkörper fest eingefügten Ankern ist es vorteilhaft, die Anker wie in den Ansprüchen 15 und 16 offenbart auszubilden und anzuordnen.In the case of anchors firmly inserted into the molded body, it is advantageous to design and arrange the anchors as disclosed in claims 15 and 16.

Eine unter Umständen bevorzugte Variante ist hierzu im Anspruch 17 gekennzeichnet.A variant which is preferred under certain circumstances is characterized in claim 17.

Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden im folgenden näher erläutert.Embodiments of the invention are shown in the drawings and are explained in more detail below.

Es zeigen

  • Fig. 1 einen Formkörper mit einem angefügten Heizleiter, und zwar in Richtung auf die heiße Formkörperseite gesehen,
  • Fig. 2 desgleichen im Schnitt II-II der Fig. 1 gesehen,
  • Fig. 3 weitere Einzelheiten in Richtung der Linie III-III der Fig. 1 gesehen,
  • Fig. 4 einen Querschnitt gem. der Linie IV-IV der Fig. 3 gesehen,
  • Fig. 5 einen montierten Heizleiter-Anker in der Vorderansicht
  • Fig. 6 desgleichen von oben gesehen,
  • Fig. 7 eine weitere Heizleiter-Halterung im Längs­schnitt,
  • Fig. 8 desgleichen in Richtung auf die heiße Form­körperseite gesehen,
  • Fig. 9 eine weitere Ausführungsform einer Heiz­leiter-Halterung im Längsschnitt,
  • Fig.10 desgleichen in Richtung auf die heiße Formkörperseite gesehen.
Show it
  • 1 is a molded body with an attached heat conductor, namely in the direction of the hot molded body side,
  • 2 also seen in section II-II of FIG. 1,
  • 3 seen further details in the direction of line III-III of FIG. 1,
  • Fig. 4 shows a cross section. seen the line IV-IV of Fig. 3,
  • Fig. 5 shows an assembled heating conductor anchor in the front view
  • 6 likewise seen from above,
  • 7 shows a further heating conductor holder in longitudinal section,
  • 8 likewise seen in the direction of the hot molded body side,
  • 9 shows a further embodiment of a heating conductor holder in longitudinal section,
  • 10 also seen in the direction of the hot molded body side.

Gemäß der Figuren 1 und 2 ist vor der heißen Seite eines Formkörpers 1 aus keramischen Fasern ein mäanderförmiger, elektrischer Heiz­leiter 2 angeordnet, dessen Zuleitungen durch den Formkörper 1 nach außen hindurchgeführt sind.According to FIGS. 1 and 2, a meandering electrical heating conductor 2 is arranged in front of the hot side of a molded body 1 made of ceramic fibers, the feed lines of which are led through the molded body 1 to the outside.

Zur Halterung des Heizleiters 2 am Formkörper 1 sind mehrere, im Formkörper fixierte, haken­förmige Anker 3 aus Stahl vorgesehen, die den Heizleiter 2 in seinen Bereichen der Heiz­leiter-Umlenkungen 4 angreifen. Die Mäuler jeweils zweier, in Längserstreckung des mäander­förmigen Heizleiters 2 einander folgender Anker 3 sind einander entgegengerichtet.To hold the heating conductor 2 on the molded body 1, a plurality of hook-shaped anchors 3 made of steel, which are fixed in the molded body and which engage the heating conductor 2 in its areas of the heating conductor deflections 4, are provided. The mouths of two anchors 3, which follow one another in the longitudinal extension of the meandering heating conductor 2, are directed in opposite directions.

Zudem ist der vertikale Abstand der Anker 3 voneinander so bemessen, daß der Heizleiter 2 zunächst in die unteren Anker 3 und dann in die oberen Anker 3 eingehängt werden kann.In addition, the vertical distance of the armatures 3 from one another is dimensioned such that the heating conductor 2 can first be suspended in the lower armature 3 and then in the upper armature 3.

Um ein unbeabsichtigtes Aushängen des Heizleiters 2 aus den oberen Ankern 3 zu erschweren, umfassen letztere die Heizleiter-Umlenkungen jeweils um mehr als 180°. Zur weiteren Erhöhung der Lagesicherheit, insbesondere bei Anordnung der Heizleiter an der Ofendecke, ist eine weitere Heizleiter-Halterung mit Abstand von den Heizleiter-Umlenkungen 4 vor­gesehen.In order to make it difficult to unintentionally unhook the heating conductor 2 from the upper anchors 3, the latter include the heating conductor deflections in each case by more than 180 °. To further increase the positional security, in particular when the heating conductors are arranged on the furnace ceiling, a further heating conductor holder is provided at a distance from the heating conductor deflections 4.

Diese Heizleiter-Halterung besteht aus einem an den der heißen Formkörperseite abgewandten Seiten des Heizleiters angreifenden, länglichen Riegel 5 aus Hartkeramik, der sich zu den zwischen den Heiz­leiter-Umlenkungen 4 befindlichen, geraden Heiz­leiter-Abschnitten rechtwinklig erstreckt und über den gesamten Heizleiter 2 reicht.This heating conductor holder consists of an elongated bar 5 made of hard ceramic, which engages on the sides of the heating conductor facing away from the hot molded body side, which extends at right angles to the straight heating conductor sections located between the heating conductor deflections 4 and extends over the entire heating conductor 2.

Die Endteile des Riegels 5 sind jeweils mit einem bolzenartigen, zylindrischen Anker 6 aus Stahl gehaltert. Letztere sind jeweils mit einer im Form­körper 1 fixierten Hülse 7 aus Keramik bajonett­verschlußartig lösbar verbunden.The end parts of the bolt 5 are each held with a bolt-like, cylindrical armature 6 made of steel. The latter are each detachably connected to a sleeve 7 made of ceramic, fixed in the molded body 1, in the manner of a bayonet lock.

Die Hülse 7 hat einen ovalen lichten Querschnitt, so daß der Anker 6 durch Drehen um 90° aus der in Fig. 3 gezeigten Lage aus der Hülse 7 herausgezogen werden kann, um z.B. den Heizleiter 2 auswechseln zu können.The sleeve 7 has an oval clear cross-section, so that the armature 6 can be pulled out of the position shown in FIG. 3 from the sleeve 7 by rotating through 90 °, in order to be able, for example, to replace the heating conductor 2.

Gemäß der Fig. 5 und 6 haben die Anker 3 und gegebenenfalls auch die Anker 6 gemäß Fig. 9 einen wellenförmigen Schaftteil 8, der so bemessen ist, daß sich gemäß der Fig. 5 und 6 die oberen und unteren Wellenberge an der Wand einer zylin­drischen Bohrung 9 spiellos abstützen, so daß einerseits der Anker 6 relativ zur Bohrung 9 zwangsläufig lagerichtig gehalten wird. Anderer­seits bleibt der Schaftteil 8 beim Einstecken in die mit hitzefestem Kleber 10 angefüllte Bohrung 9 über seine gesamte Länge vom Kleber 10 umfaßt.According to FIGS. 5 and 6, the armature 3 and possibly also the armature 6 according to FIG. 9 have a wave-shaped shaft part 8 which is dimensioned such that the upper and lower wave crests on the wall of a cylindrical one according to FIGS. 5 and 6 Support bore 9 without play, so that on the one hand the armature 6 is inevitably held in the correct position relative to the bore 9. On the other hand, the shaft part 8 remains when it is inserted into the bore 9 filled with heat-resistant adhesive 10 over its entire length by the adhesive 10.

Zur weiteren Erhöhung der zwangsläufig lage­richtigen Anordnung des Ankers 3 können an letzteren, wie aus der Fig. 6 ersichtlich, seit­lich abstrebende Vorsprünge 11 und 12 angeformt sein, die den Anker 3 in der Bohrung 9 seitlich zentrieren.To further increase the inevitably correct arrangement of the armature 3, laterally striving projections 11 and 12 can be integrally formed on the latter, as shown in FIG. 6, which laterally center the armature 3 in the bore 9.

In den Fig. 7 und 8 ist eine weitere Ausführungs­form einer Heizleiter-Halterung dargestellt, deren Riegel 5 an zwei benachbarten, geraden Heizleiter-­Abschnitten angreift. Durch den länglichen Riegel 5 greift ein bolzenartiger Anker 6, der wie der der Fig. 3 mit einer im Formkörper 1 unlösbar ange­ordneten Hülse 7 bajonettverschlußartig lösbar ver­bunden ist.7 and 8 show a further embodiment of a heating conductor holder, the latch 5 of which engages two adjacent, straight heating conductor sections. A bolt-like anchor 6 engages through the elongated bolt 5 and, like that of FIG. 3, is detachably connected in a bayonet-lock-like manner to a sleeve 7 which is arranged in the molded body 1 in a non-releasable manner.

Der Riegel 5 besteht aus Hartkeramik und hat einen angeformten, zwischen die beiden geraden Heizleiter-Abschnitte eingreifenden Stutzen 13, um elektrische Kurzschlüsse zwischen den vor­genannten Heizleiter-Abschnitten auszuschließen. Der Außendurchmesser der Hülse 7 ist kleiner als der Abstand zwischen den beiden vorge­nannten Heizleiter-Abschnitten, so daß diese Heizleiter-Halterung an einen Formkörper 1 auch nachträglich ohne Manipulationen ange­bracht werden kann.The latch 5 is made of hard ceramic and has a molded-on connecting piece 13 which engages between the two straight heating conductor sections in order to rule out electrical short circuits between the aforementioned heating conductor sections. The outer diameter of the sleeve 7 is smaller than the distance between the two aforementioned heat conductor sections, so that this heat conductor holder can also be attached to a molded body 1 without manipulation.

Zudem ist auf den Anker 6, der einen am Riegel 5 angreifenden Hammerkopf mit einem Schlüssel­ansatz aufweist, eine hülsenartige Beilage 14 aufgesteckt, die sich an der heißen Seite des Formkörpers 1 abstützt und zwischen welcher und dem Riegel 5 die vorgenannten Heizleiter-Ab­schnitte kraftschlüssig eingespannt sind.In addition, a sleeve-like insert 14, which is supported on the hot side of the molded body 1 and between which and the bolt 5 the aforementioned heating conductor sections are non-positively clamped, is attached to the armature 6, which has a hammer head engaging the bolt 5 with a key attachment .

Gemäß der Fig. 9 und 10 ist ein Anker 6 im Formkörper 1 unlösbar befestigt. Sein aus dem Formkörper 1 herausragender Endteil endet in einer rechtwinkligen Umbiegung 15, welche durch einen der Umbiegung 15 entsprechenden, läng­lichen Durchbruch 16 im Riegel 5 hindurchgesteckt werden kann. Zudem ist der Riegel 5 auf dem Anker 6 um seine Längsachse verdrehbar ausge­bildet. Der Durchbruch 16 erstreckt sich in Richtung seiner Längserstreckung rechtwinklig zur Längserstreckung des Riegels 5, so daß nach dem Aufstecken des Riegels 5 auf den Anker 6 und Verdrehen des Riegels 5 um 90° sich die Um­biegung 15 an der der heißen Seite des Form­körpers 1 abgewandten Seite des Riegels 5 ab­stützt und dann die Heizleiter-Abschnitte zwischen sich und einer Beilage 14′ kraftschlüssig und lösbar einspannt. Auch hier bestehen der Riegel 5 und die Beilage 14′ aus Keramik. Um elektrische Kontakte der Heizleiter-Abschnitte mit dem metallischen Anker 6 anzuschließen, hat hier die Beilage 14′ einen angeformten und zwischen die geraden Heizleiter-Abschnitte eingreifenden Stutzen 13.9 and 10, an anchor 6 is permanently attached to the molded body 1. Its end part protruding from the molded body 1 ends in a right-angled bend 15 which is inserted through an elongated opening 16 in the bolt 5 corresponding to the bend 15 can be. In addition, the bolt 5 on the armature 6 is rotatable about its longitudinal axis. The opening 16 extends in the direction of its longitudinal extent at right angles to the longitudinal extent of the bolt 5, so that after the bolt 5 has been fitted onto the anchor 6 and the bolt 5 has been rotated by 90 °, the bend 15 on the side facing away from the hot side of the molded body 1 of the bolt 5 supports and then clamps the heat conductor sections between them and an insert 14 'non-positively and releasably. Here too, the bolt 5 and the insert 14 'made of ceramic. In order to connect electrical contacts of the heating conductor sections with the metallic armature 6, here the insert 14 'has an integrally formed and engaging socket 13 between the straight heating conductor sections.

Der Riegel 5 kann auch über mehr als zwei gerade Heizleiter-Abschnitte hinausreichen.The bar 5 can also extend beyond more than two straight heating conductor sections.

Unter Umständen können die bolzenartigen Anker 6 auch als Schraube ausgebildet und in den Form­körper 1 unmittelbar eingreifend angeordnet werden.
Es ist auch möglich, einen Anker 6 und einen Riegel 5 einstückig aus Keramik herzustellen.Under certain circumstances, the bolt-like anchors 6 can also be designed as a screw and can be arranged to engage directly in the molded body 1.
It is also possible to manufacture an anchor 6 and a bolt 5 in one piece from ceramic.

Claims (17)

1. Vorrichtung zur Halterung mäanderförmiger, elektrischer Heizleiter an der heißen Seite von thermisch isolierenden Formkörpern aus keramischen Fasern in Industrieöfen, wobei die Heizleiter in den Bereichen ihrer Um­lenkungen von Ankern gehalten werden, die an den Formkörpern angeordnet sind, gekennzeichnet durch zwischen den Umlenkungen (4) der Heiz­leiter (2) und mit Abstand von den Umlenkungen (4) angeordnete, in den Formkörpern (1) ver­ankerte und mindestens an den der heißen Seite der Formkörper (1) abgewandten Seiten der Heizleiter (2) angreifende Heizleiter-Halte­rungen.1.Device for holding meandering electrical heating conductors on the hot side of thermally insulating shaped bodies made of ceramic fibers in industrial furnaces, the heating conductors being held in the areas of their deflections by anchors which are arranged on the shaped bodies, characterized by between the deflections (4 ) the heat conductor (2) and at a distance from the deflections (4), anchored in the shaped bodies (1) and at least on the hot side of the shaped bodies (1) facing away from the heat conductors (2) engaging heat conductor brackets. 2. Vorrichtung nach Anspruch 1, dadurch gekenn­zeichnet, daß die Heizleiter-Halterungen an den Formkörpern (1) lösbar verankert sind.2. Device according to claim 1, characterized in that the heat conductor holders are releasably anchored to the shaped bodies (1). 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Heizleiter-Halterungen zumindest in den Bereichen der am Heizleiter (2) angreifenden Stellen elektrisch isoliert ausgebildet sind.3. Device according to claim 1 or 2, characterized in that the heating conductor holders are electrically isolated at least in the areas of the points engaging the heating conductor (2). 4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Heizleiter-­Halterungen aus mindestens einem am Formkörper (1) befestigten Anker (6) und einem am Anker (6) gehalterten Riegel ( 5) bestehen.4. Device according to one of claims 1 to 3, characterized in that the heating conductor brackets consist of at least one on the molded body (1) attached armature (6) and on the armature (6) bolt (5). 5. Vorrichtung nach Anspruch 4, dadurch gekenn­zeichnet, daß die Riegel (5) an ihren Ankern (6) lösbar befestigt sind.5. The device according to claim 4, characterized in that the bars (5) on their anchors (6) are releasably attached. 6. Vorrichtung nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß die Riegel (5) über mehrere gegebenenfalls alle an die Heizleiterumlenkungen (4) sich anschließenden Abschnitte der Heizleiter (2) sich erstreckend ausgebildet sind.6. The device according to claim 4 or 5, characterized in that the bars (5) over several optionally all of the heating conductor deflections (4) adjoining sections of the heating conductor (2) are formed extending. 7. Vorrichtung nach einem der Ansprüche 4 bis 6, gekennzeichnet durch an ihren Ankern (6) und relativ zu diesem drehbar gelagerte Riegel (5), die in der Sperrlage zu den an die Heizleiter-­Umlenkungen (4) sich anschließenden Abschnitte der Heizleiter (2) quer gerichtet sind.7. Device according to one of claims 4 to 6, characterized by on its anchors (6) and relative to this rotatably mounted bolt (5), which in the locked position to the heating conductor deflections (4) adjoining sections of the heating conductor ( 2) are directed transversely. 8. Vorrichtung nach einem der Ansprüche 4 bis 7, dadurch gekennzeichnet, daß die Anker (6) der Heizleiter-Halterungen zwischen zwei benach­barte gerade Heizleiterabschnitte hindurch­steckbar ausgebildet sind.8. Device according to one of claims 4 to 7, characterized in that the armature (6) of the heating conductor holders between two adjacent straight heating conductor sections are designed to be inserted. 9. Vorrichtung nach einem der Ansprüche 4 bis 8, gekennzeichnet durch mit den Ankern (6) ver­schraubte Riegel (5).9. Device according to one of claims 4 to 8, characterized by bolts (5) screwed to the anchors (6). 10. Vorrichtung nach einem der Ansprüche 4 bis 8, dadurch gekennzeichnet, daß die Riegel (5) mit ihren Ankern (6) bajonettverschlußartig lösbar verbunden sind.10. Device according to one of claims 4 to 8, characterized in that the bolts (5) with their anchors (6) are releasably connected in a bayonet-type lock. 11. Vorrichtung nach einem der Ansprüche 4 bis 10, dadurch gekennzeichnet, daß die Anker (6) an ihren freien, aus den Formkörpern (1) heraus­ragenden Endteilen seitlich abstrebende Vor­sprünge (15) aufweisen, die Riegel (5) je einen dem Profil des Ankers und der seitlichen Vor­sprünge (15) entsprechende Durchsteck-Durch­brüche (16) haben und daß letztere in Rich­tung ihrer größten Weite in der Sperrstellung der Riegel (5) zur Längserstreckung der Riegel (5) quer, insbesondere rechtwinklig gerichtet sind.11. Device according to one of claims 4 to 10, characterized in that the armatures (6) on their free, from the shaped bodies (1) projecting end parts laterally strutting projections (15), the bolt (5) each one the profile of The anchor and the lateral projections (15) have corresponding through-openings (16) and that the latter are directed transversely, in particular at right angles, in the direction of their greatest width in the locked position of the bolts (5) for the longitudinal extension of the bolts (5). 12. Vorrichtung nach einem der Ansprüche 4 bis 11, dadurch gekennzeichnet, daß die Anker (8) jeweils mit einer im Formkörper (1) be­festigten Buchse (7) lösbar, insbesondere bajonettverschlußartig verbunden sind.12. The device according to one of claims 4 to 11, characterized in that the armatures (8) are each detachably connected, in particular with a bayonet lock, to a socket (7) fastened in the molded body (1). 13. Vorrichtung nach einem der vorherigen An­sprüche, gekennzeichnet durch in die Form­körper (1) fest eingefügte Anker (6), an welchen die Riegel (5) um die Längsachse der Anker (6) einstellbar gelagert sind.13. Device according to one of the preceding claims, characterized in that in the molded body (1) fixedly inserted armature (6), on which the bars (5) about the longitudinal axis of the armature (6) are adjustably mounted. 14. Vorrichtung nach einem der Ansprüche 4 bis 13, dadurch gekennzeichnet, daß die zwischen den Umlenkungen (4) der Heizleiter (2) be­findlichen, länglichen Abschnitte der Heiz­leiter (2) jeweils zwischen einem Riegel (5) und einem an einem Anker (6) angeordneten Widerlager (14), insbesondere aus elek­trischem Isolierstoff zumindest kraftschlüssig einspannbar ausgebildet sind.14. Device according to one of claims 4 to 13, characterized in that between the deflections (4) of the heating conductor (2) located, elongated sections of the heating conductor (2) each between a bar (5) and one on an anchor (6 ) arranged abutments (14), in particular made of electrical insulating material, are at least non-positively clamped. 15. Vorrichtung nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß die Anker (3,6) in zylindrische Bohrungen (9) der Formkörper (1) eingesteckte und mittels hitzebeständigem Kleber (10) fixierte Schaftteile (8) haben, ferner die Querschnitte der vorgenannten Schaftteile (8) jeweils kleiner als der lichte Querschnitt einer zylindrischen Bohrung (9) ausgebildet sind, zudem die vorgenannten Schaftteile (8) wellen­förmig ausgebildet sind sowie sich mit ihren Wellenbergen an diametral einander gegenüberliegenden Wänden der Bohrungen (9) abstützen.15. The device according to one of the preceding claims, characterized in that the armature (3,6) in have cylindrical bores (9) of the shaped bodies (1) inserted and fixed by means of heat-resistant adhesive (10) shaft parts (8), furthermore the cross sections of the aforementioned shaft parts (8) are each smaller than the clear cross section of a cylindrical bore (9), also the aforementioned shaft parts (8) are of wave-shaped design and are supported with their wave crests on diametrically opposite walls of the bores (9). 16. Vorrichtung nach Anspruch 15, dadurch gekenn­zeichnet, daß die vorgenannten Schaftteile (8) der Anker (6) gegenüber den Wellenbergen um die Schaftlängsachse um ca. 90° verdreht angeordnete, zur Bohrungswand hin abstrebende und an letztere sich abstützende, insbesondere angeformte Vor­sprünge (11,12) haben.16. The apparatus according to claim 15, characterized in that the aforementioned shaft parts (8) of the armature (6) with respect to the wave crests about the longitudinal axis of the shaft arranged rotated by about 90 °, striving towards the bore wall and supported on the latter, in particular molded projections ( 11.12). 17. Vorrichtung nach Anspruch 15, dadurch gekenn­zeichnet, daß die Anker (6) wendelförmige Schaftteile (8) haben, wobei der Wendel-Außen-­Durchmesser jeweils der lichten Weite einer Formkörper-Bohrung (9) entspricht.17. The apparatus according to claim 15, characterized in that the armatures (6) have helical shaft parts (8), the outer diameter of the helix corresponding in each case to the inside width of a shaped body bore (9).
EP89100701A 1988-03-09 1989-01-17 Device for supporting electrical heating conductors in industrial furnaces Expired - Lifetime EP0331880B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89100701T ATE96973T1 (en) 1988-03-09 1989-01-17 DEVICE FOR SUPPORTING ELECTRIC HEATING CABLES IN INDUSTRIAL FURNACES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3807721 1988-03-09
DE3807721A DE3807721A1 (en) 1988-03-09 1988-03-09 DEVICE FOR SUPPORTING ELECTRIC HEAT CONDUCTORS IN INDUSTRIAL OVENS

Publications (2)

Publication Number Publication Date
EP0331880A1 true EP0331880A1 (en) 1989-09-13
EP0331880B1 EP0331880B1 (en) 1993-11-03

Family

ID=6349246

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Application Number Title Priority Date Filing Date
EP89100701A Expired - Lifetime EP0331880B1 (en) 1988-03-09 1989-01-17 Device for supporting electrical heating conductors in industrial furnaces

Country Status (3)

Country Link
EP (1) EP0331880B1 (en)
AT (1) ATE96973T1 (en)
DE (1) DE3807721A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0341441A2 (en) * 1988-05-13 1989-11-15 Abicht, Roland, Ing. grad. Holding device for electrical heating conductors in an industrial furnace
US20100278208A1 (en) * 2007-12-05 2010-11-04 Sandvik Intellectual Property Ab Fastening means for terminals for electrical resistance elements
JP2016531379A (en) * 2013-06-14 2016-10-06 サンドビック株式会社 Molybdenum disilicide ceramic heating element holding structure

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US1459801A (en) * 1923-06-26 Electric furnace
FR683770A (en) * 1928-10-23 1930-06-17 Thomson Houston Comp Francaise Improvements to electric ovens and their heating systems
US1767172A (en) * 1923-09-17 1930-06-24 Electric Furnace Co Resistor grid and method of supporting same
US1861947A (en) * 1931-02-07 1932-06-07 Westinghouse Electric & Mfg Co Resistor support
FR2152048A5 (en) * 1971-09-02 1973-04-20 Wilson Eng Co Inc Lee
DE2646890B1 (en) * 1976-10-16 1978-02-02 Degussa VACUUM FURNACE WITH GRAPHITE HEATING
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
US4443881A (en) * 1982-06-01 1984-04-17 Northcutt Donald R Suspension system for electric heating elements
US4573164A (en) * 1984-02-16 1986-02-25 Combustol Industria E Comercio Ltda. Support for electrical resistances of ovens or kilns with ceramic mantle thermal insulation
DE8803184U1 (en) * 1988-03-09 1988-05-05 Abicht, Roland, Ing.(Grad.), 5828 Ennepetal, De

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US1588611A (en) * 1921-06-25 1926-06-15 Westinghouse Electric & Mfg Co Electric furnace
SE8002541L (en) * 1980-04-02 1981-10-03 Bulten Kanthal Ab DEVICE FOR PREPARATION OF ELECTRICAL RESISTANCE ELEMENTS
BR8007655A (en) * 1980-11-24 1982-07-27 Carborundum Sa SUPPORT DEVICE OR SUPPORT FOR ELECTRIC HEATING ELEMENTS IN OVENS AND IN EQUIPMENT, ISOLATED WITH CERAMIC FIBER

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Publication number Priority date Publication date Assignee Title
US1459801A (en) * 1923-06-26 Electric furnace
US1767172A (en) * 1923-09-17 1930-06-24 Electric Furnace Co Resistor grid and method of supporting same
FR683770A (en) * 1928-10-23 1930-06-17 Thomson Houston Comp Francaise Improvements to electric ovens and their heating systems
US1861947A (en) * 1931-02-07 1932-06-07 Westinghouse Electric & Mfg Co Resistor support
FR2152048A5 (en) * 1971-09-02 1973-04-20 Wilson Eng Co Inc Lee
DE2646890B1 (en) * 1976-10-16 1978-02-02 Degussa VACUUM FURNACE WITH GRAPHITE HEATING
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
US4443881A (en) * 1982-06-01 1984-04-17 Northcutt Donald R Suspension system for electric heating elements
US4573164A (en) * 1984-02-16 1986-02-25 Combustol Industria E Comercio Ltda. Support for electrical resistances of ovens or kilns with ceramic mantle thermal insulation
DE8803184U1 (en) * 1988-03-09 1988-05-05 Abicht, Roland, Ing.(Grad.), 5828 Ennepetal, De

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0341441A2 (en) * 1988-05-13 1989-11-15 Abicht, Roland, Ing. grad. Holding device for electrical heating conductors in an industrial furnace
EP0341441A3 (en) * 1988-05-13 1991-07-03 Abicht, Roland, Ing. grad. Holding device for electrical heating conductors in an industrial furnace
US20100278208A1 (en) * 2007-12-05 2010-11-04 Sandvik Intellectual Property Ab Fastening means for terminals for electrical resistance elements
US8494026B2 (en) * 2007-12-05 2013-07-23 Sandvik Intellectual Property Ab Fastening means for terminals for electrical resistance elements
JP2016531379A (en) * 2013-06-14 2016-10-06 サンドビック株式会社 Molybdenum disilicide ceramic heating element holding structure
US10251217B2 (en) 2013-06-14 2019-04-02 Sandvik Kk Molybdenum disilicide-based ceramic heating element holding structure

Also Published As

Publication number Publication date
EP0331880B1 (en) 1993-11-03
DE3807721C2 (en) 1989-12-21
ATE96973T1 (en) 1993-11-15
DE3807721A1 (en) 1989-09-28

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