EP0341441B1 - Holding device for electrical heating conductors in an industrial furnace - Google Patents

Holding device for electrical heating conductors in an industrial furnace Download PDF

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Publication number
EP0341441B1
EP0341441B1 EP89106479A EP89106479A EP0341441B1 EP 0341441 B1 EP0341441 B1 EP 0341441B1 EP 89106479 A EP89106479 A EP 89106479A EP 89106479 A EP89106479 A EP 89106479A EP 0341441 B1 EP0341441 B1 EP 0341441B1
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EP
European Patent Office
Prior art keywords
anchor
anchor shaft
limb
anchors
insulating body
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.)
Expired - Lifetime
Application number
EP89106479A
Other languages
German (de)
French (fr)
Other versions
EP0341441A3 (en
EP0341441A2 (en
Inventor
Roland Ing. Grad. Abicht
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.)
ABICHT, ROLAND, ING. GRAD.
Original Assignee
Individual
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.)
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Publication of EP0341441A2 publication Critical patent/EP0341441A2/en
Publication of EP0341441A3 publication Critical patent/EP0341441A3/en
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Publication of EP0341441B1 publication Critical patent/EP0341441B1/en
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Expired - Lifetime legal-status Critical Current

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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 electrical, meandering heating conductors at a distance from the hot side of the side walls of an insulating body made of ceramic fibers in industrial furnaces, the heating elements in the areas of their upper and lower deflections of metallic anchors arranged on the insulating body, in particular made of wire sections. are held, the anchors also having console-like supports, which strut laterally from the anchor shafts and can be placed on the hot side of the insulating body, and the supports of the respective upper anchors are each formed by a downward-directed bend adjoining the anchor shaft.
  • each of the two legs of the load hook-like bends has a relatively large length in order to be able to hold the heating conductor even if the latter heats up to operating temperature, e.g. to 1000 ° C more.
  • the metallic anchors When the heating conductor is heated, the metallic anchors also heat up accordingly. It has been shown, however, that the e.g. Deformed to 1000 ° C and possibly more heated anchors already by their own weight that afterwards a correct and positionally secure mounting of the heating conductors is no longer possible, although the anchors consist of high-alloy, high-temperature-resistant metal.
  • the invention is based on the object of improving a device of the type specified in the preamble of claim 1 in such a way that at least while maintaining the advantages given in the prior art, a substantial simplification and reduction in price of the device itself and its manufacture and its assembly can be achieved.
  • the supports of the lower anchors are each designed as a straight rod running parallel from the anchor shaft to the leg, and furthermore the support designed as a rod is welded to the anchor shaft.
  • bracket-like support by a laterally striving folding of the anchor shaft.
  • a further advantageous embodiment in the sense of the object of the present invention is characterized in that an angle piece forming the support is fastened to the anchor shaft, one leg of the angle piece abutting the anchor shaft, the other angle piece leg, however, being aligned with the bent armature leg and arranged at a parallel distance.
  • the angle piece can advantageously be attached to the anchor shaft by welding.
  • the anchor on the anchor shaft Leg of the elbow has the anchor shaft encompassing brackets that can be integrally formed on the elbow.
  • Another one-piece design of the prescribed anchor is that a bend forming the support is arranged on the anchor shaft, which is followed by a section running approximately parallel to the anchor shaft towards the free end of the armature, from which the aforementioned bend opposes the one holding the heating conductor Leg is bent.
  • FIG. 1 two successive anchors 3, 3 'made of heat-resistant metal for holding the heating conductor are shown in an insulating body 1 made of ceramic fibers in the longitudinal extension of a meandering heating conductor 2.
  • the anchors each attack the bends of the heating conductor 2.
  • the shafts 4, 4 'of the anchors 3, 3' are directed at right angles to the hot side 5 of the insulating body 1 and are embedded in the insulating body 1 in a manner which is virtually non-detachable.
  • the legs 6, 6 ', on which the bends of the heat conductor 2 are supported or which overlap the bend of the heat conductor 2, are directed in opposite directions.
  • the leg 6 of the armature arranged at the top in FIG.
  • the leg 6 'of the armature 3' lying in the drawing figure 1 is so long that the heating conductor 2 heated to the operating temperature, the length of which increases in the process, can move along the leg 6 'and is still held securely.
  • the anchors 3,3 ' are made in one piece from wire sections of circular profile. Their shaft parts engaging in the insulating body 1 have protrusions, not shown, which project laterally and which secure the anchors 3, 3 'both against rotation about their longitudinal axis and in the direction of the longitudinal extent in the insulating body 1.
  • the anchors 3, 3 'each have a bracket-like support 8, 8' resting on the hot side 5.
  • the support 8 'of the lower armature 3' is designed as a straight rod which extends in the same direction as the leg 6 'of the armature 3' and is oriented in the same direction and welded to the armature shaft 4 '.
  • the shaft of the upper armature 3 has a bend which is directed downwards at right angles and which bears on the hot side 5 of the insulating body 1 and forms a bracket-like support 8, to which a section 9 running parallel to the armature shaft 4 adjoins the free end of the armature 3 , from which the leg 6 is bent.
  • the support 8' is formed by a right-angled angle piece 10 'welded to the anchor shaft 4'.
  • the elbow leg welded to the armature shaft 4 ' runs parallel to the armature shaft 4', while the other elbow leg is arranged in the same direction as the leg 6 'of the armature 3'.
  • a U-shaped angle piece 10 ' is welded to the armature 3' to form a support 8 ', both angle piece legs being oriented in the same direction as the leg 6' of the armature 3 '.
  • the support 8' is formed by folding the armature shaft 4 'in the same direction as the leg 6' of the armature 3 '.

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

Abstract

In a device for holding electrical, meandering heating conductors at a distance from the hot side of insulating bodies consisting of ceramic fibres in industrial furnaces, the heating conductors are held in the regions of their bends by metallic anchors arranged on the insulating bodies. In order to increase the shape stability of the anchors, the anchors (3) in each case have only one limb (6) which is braced laterally by the anchor shaft (4) and is arranged parallel at a distance from the hot side (5) of the insulating body (1). <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zur Halterung elektrischer, mäanderförmiger Heizleiter mit Abstand von der heißen Seite der Seitenwände eines Isolierkörpers aus keramischen Fasern in Industrieöfen, wobei die Heizleister in den Bereichen ihrer oberen und unteren Umlenkungen von am Isolierkörper angeordneten, metallischen Ankern, insbesondere aus Drahtabschnitten, gehalten werden, wobei zudem die Anker konsolartige, von den Ankerschäften seitlich abstrebende und an der heißen Seite des Isolierkörpers anlegbare Stützen haben und wobei die Stützen der jeweils oberen Anker durch jeweils eine an den Ankerschaft sich anschließende, nach unten zielende Abbiegung gebildet sind.The invention relates to a device for holding electrical, meandering heating conductors at a distance from the hot side of the side walls of an insulating body made of ceramic fibers in industrial furnaces, the heating elements in the areas of their upper and lower deflections of metallic anchors arranged on the insulating body, in particular made of wire sections. are held, the anchors also having console-like supports, which strut laterally from the anchor shafts and can be placed on the hot side of the insulating body, and the supports of the respective upper anchors are each formed by a downward-directed bend adjoining the anchor shaft.

Aus dem DE-GM 88 03 184 bekannte Anker aus hochwarmfestem Metall enden jeweils in einer lasthakenartigen, mit Abstand von der heißen Seite des Isolierkörpers angeordneten Umbiegung, wobei die Mäuler dieser lasthakenartigen Umbiegungen zweier in Längserstreckung des Heizleiters einander folgender Anker einander entgegengerichtet sind. Ferner bilden hierbei die an die Ankerschäfte sich anschließenden Abbiegungen der lasthakenartigen Umbiegungen an die heiße Seite des Isolierkörpers anlegbare Stützen. Zudem haben jeweils die beiden Schenkel der lasthakenartigen Umbiegungen eine relativ große Länge um auch dann die Heizleiter haltern zu können, wenn letztere sich infolge Erwärmung auf Betriebstemperatur, z.B. auf 1000°C mehr, gelängt haben.Known from DE-GM 88 03 184 anchors made of high-temperature-resistant metal each end in a load hook-like bend arranged at a distance from the hot side of the insulating body, the jaws of these load hook-like bends of two anchors following one another in the longitudinal extension of the heating conductor being opposed to one another. Furthermore, the bends of the load hook-like bends adjoining the anchor shafts form supports which can be placed on the hot side of the insulating body. In addition, each of the two legs of the load hook-like bends has a relatively large length in order to be able to hold the heating conductor even if the latter heats up to operating temperature, e.g. to 1000 ° C more.

Bei Erwärmung des Heizleiters erwärmen sich aber auch die metallischen Anker entsprechend. Hierbei hat sich aber gezeigt, daß sich die z.B. auf 1000°C und gegebenenfalls auch mehr erwärmte Anker schon durch ihr Eigengewicht verformen, daß danach eine lagerichtige und lagesichere Halterung der Heizleiter nicht mehr gegeben ist, obwohl die Anker aus hochlegiertem, hochwarmfestem Metall bestehen.When the heating conductor is heated, the metallic anchors also heat up accordingly. It has been shown, however, that the e.g. Deformed to 1000 ° C and possibly more heated anchors already by their own weight that afterwards a correct and positionally secure mounting of the heating conductors is no longer possible, although the anchors consist of high-alloy, high-temperature-resistant metal.

Der Erfindung liegt nun die Aufgabe zugrunde eine Vorrichtung der im Oberbegriff des Anspruches 1 angegebenen Art derart zu verbessern, daß mindestens unter Beibehaltung der beim Stand der Technik gegebenen Vorteile eine wesentliche Vereinfachung und Verbilligung der Vorrichtung selbst und deren Herstellung so wie deren Montage erreichbar ist.The invention is based on the object of improving a device of the type specified in the preamble of claim 1 in such a way that at least while maintaining the advantages given in the prior art, a substantial simplification and reduction in price of the device itself and its manufacture and its assembly can be achieved.

Die Lösung dieser Aufgabe kennzeichnet sich durch die im Patentanspruch 1 angegebenen Merkmale.The solution to this problem is characterized by the features specified in claim 1.

Auf diese Weise erhält man jeweils einstückige, einfache, materialsparende und preiswert herstellbare Anker mit am Isolierkörper unmittelbar anliegenden, konsolartigen Stützen, wobei letztere einem durch Schwerkraft bewirkten Abbiegen der aus dem Isolierkörper heraussragenden Ankerteile nach unten a priori entgegenwirken.In this way, one-piece, simple, material-saving and inexpensive to manufacture anchors with console-like supports lying directly against the insulating body are obtained, the latter counteracting a priori a downward gravitational deflection of the anchor parts projecting out of the insulating body.

Zur weiteren Materialersparnis ist es vorteilhaft, wenn die Stützen der unteren Anker jeweils als vom Ankerschaft zum Schenkel parallel verlaufender, gerader Stab ausgebildet sind, und ferner die als Stab ausgebildete Stütze am Ankerschaft angeschweißt ist.To further save material, it is advantageous if the supports of the lower anchors are each designed as a straight rod running parallel from the anchor shaft to the leg, and furthermore the support designed as a rod is welded to the anchor shaft.

Es ist auch möglich die konsolartig wirksame Stütze durch eine seitlich abstrebende Faltung des Ankerschaftes zu bilden.It is also possible to form the bracket-like support by a laterally striving folding of the anchor shaft.

Eine weitere im Sinne der Aufgabe vorliegender Erfindung vorteilhafte Ausgestaltung ist dadurch gekennzeichnet, daß am Ankerschaft ein die Stütze bildendes Winkelstück befestigt ist, wobei der eine Schenkel des Winkelstückes am Ankerschaft anliegt, der andere Winkelstückschenkel jedoch zum abgebogenen Ankerschenkel gleichgerichtet und mit parallelem Abstand angeordnet ist.A further advantageous embodiment in the sense of the object of the present invention is characterized in that an angle piece forming the support is fastened to the anchor shaft, one leg of the angle piece abutting the anchor shaft, the other angle piece leg, however, being aligned with the bent armature leg and arranged at a parallel distance.

Die Befestigung des Winkelstückes am Ankerschaft kann vorteilhafterweise durch Schweißen erfolgen. Es ist aber auch möglich, daß der am Ankerschaft anliegende Schenkel des Winkelstückes den Ankerschaft umfassende Klammern aufweist, die am Winkelstück angeformt sein können.The angle piece can advantageously be attached to the anchor shaft by welding. However, it is also possible that the anchor on the anchor shaft Leg of the elbow has the anchor shaft encompassing brackets that can be integrally formed on the elbow.

Eine andere einstückig herstellbare Gestaltung des vorgeschriebenen Ankers besteht darin, daß am Ankerschaft eine die Stütze bildende Abbiegung angeordnet ist, an die sich zum freien Ende des Ankers hin ein zum Ankerschaft etwa parallel verlaufender Abschnitt anschließt, von dem der vorgenannten Abbiegung entgegengerichtet der den Heizleiter halternde Schenkel abgebogen ist.Another one-piece design of the prescribed anchor is that a bend forming the support is arranged on the anchor shaft, which is followed by a section running approximately parallel to the anchor shaft towards the free end of the armature, from which the aforementioned bend opposes the one holding the heating conductor Leg is bent.

Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und im folgenden näher beschrieben.Embodiments of the invention are shown in the drawing and described in more detail below.

Es zeigt:

Fig. 1
einen Teil eines an der Seitenwandung eines Industrieofens gehalterten, elektrischen, mäanderförmigen Heizleiters;
Fig. 2 bis 4
weitere Ausführungsformen von Heizleiterhalterungen.
It shows:
Fig. 1
a part of an electrical, meandering heating conductor held on the side wall of an industrial furnace;
2 to 4
further embodiments of heating conductor holders.

Gemäß Figur 1 sind zwei in einem Isolierkörper 1 aus keramischen Fasern in Längserstreckung eines mäanderförmiger Heizleiters 2 aufeinanderfolgende Anker 3,3' aus hochwarmfestem Metall zur Halterung des Heizleiters dargestellt. Die Anker greifen jeweils an den Umbiegungen des Heizleiters 2 an.According to FIG. 1, two successive anchors 3, 3 'made of heat-resistant metal for holding the heating conductor are shown in an insulating body 1 made of ceramic fibers in the longitudinal extension of a meandering heating conductor 2. The anchors each attack the bends of the heating conductor 2.

Die Schäfte 4,4' der Anker 3,3' sind zur heißen Seite 5 des Isolierkörpers 1 rechtwinklig gerichtet und in den Isolierkörpers 1 quasi unlösbar eingebettet. An den aus dem Isolierkörper 1 herausragenden Schäften 4,4'der Anker 3,3' ist jeweils ein zur heißen Seite 5 des Isolierkörpers 1 parallel verlaufender und mit Abstand zur heißen Seite 5 angeordneter Schenkel 6,6' angeformt. Die Schenkel 6,6', auf welchen sich die Umbiegungen des Heizleiters 2 abstützen bzw. die die Umbiegung des Heizleiters 2 übergreifen, sind einander entgegengerichtet. Der Schenkel 6 des in Zeichnungsfigur 1 oben angeordneten Ankers ermöglicht das Einhängen des Heizleiters 2, wobei in der Gebrauchslage des Heizleiters 2 ein unbeabsichtigtes Lösen desselben erschwert und Relativverschiebungen des Heizleiters 2 zum in der Zeichnung unten befindlichen Anker 3' verhindert sind. Der Schenkel 6' des in Zeichnungsfigur 1 unten liegenden Ankers 3' ist so lang ausgebildet, daß der auf Betriebstemperatur erwärmte Heizleiter 2, dessen Länge sich dabei vergrößert, sich längs des Schenkels 6' verschieben kann und dabei noch sicher gehalten wird.The shafts 4, 4 'of the anchors 3, 3' are directed at right angles to the hot side 5 of the insulating body 1 and are embedded in the insulating body 1 in a manner which is virtually non-detachable. On the shafts 4, 4 ′ of the armature 3, 3 ′ projecting from the insulating body 1, a leg 6, 6 ′ running parallel to the hot side 5 of the insulating body 1 and spaced apart from the hot side 5 is formed. The legs 6, 6 ', on which the bends of the heat conductor 2 are supported or which overlap the bend of the heat conductor 2, are directed in opposite directions. The leg 6 of the armature arranged at the top in FIG. 1 enables the heating conductor 2 to be hooked in, wherein in the position of use of the heating conductor 2 it is difficult to unintentionally release the heating conductor and relative displacements of the heating conductor 2 to the armature 3 ′ located in the drawing below are prevented. The leg 6 'of the armature 3' lying in the drawing figure 1 is so long that the heating conductor 2 heated to the operating temperature, the length of which increases in the process, can move along the leg 6 'and is still held securely.

Die Anker 3,3' sind einstückig aus Drahtabschnitten kreisrunden Profils hergestellt. Ihre in den Isolierkörper 1 eingreifenden Schaftteile haben nicht dargestellte, seitlich vorstehende, die Anker 3,3' sowohl gegen Verdrehung um ihre Längsachse sichernde als in Richtung der Längserstreckung im Isolierkörper 1 fixierende Vorsprünge.The anchors 3,3 'are made in one piece from wire sections of circular profile. Their shaft parts engaging in the insulating body 1 have protrusions, not shown, which project laterally and which secure the anchors 3, 3 'both against rotation about their longitudinal axis and in the direction of the longitudinal extent in the insulating body 1.

Die Anker 3,3' haben jeweils eine an der heißen Seite 5 anliegende konsolartige Stütze 8,8'. Die Stütze 8' des unteren Ankers 3' ist als gerader, zum Schenkel 6' des Ankers 3' parallel verlaufender, gleichgerichteter und am Ankerschaft 4' angeschweißter Stab ausgebildet. Der Schaft des oberen Ankers 3 hat eine rechtwinklig nach unten zielende, an der heißen Seite 5 des Isolierkörpers 1 anliegende und eine konsolartig wirksame Stütze 8 bildende Abbiegung, an die sich zum freien Ende des Ankers 3 hin ein zum Ankerschaft 4 parallel verlaufender Abschnitt 9 anschließt, von dem der Schenkel 6 abgebogen ist.The anchors 3, 3 'each have a bracket-like support 8, 8' resting on the hot side 5. The support 8 'of the lower armature 3' is designed as a straight rod which extends in the same direction as the leg 6 'of the armature 3' and is oriented in the same direction and welded to the armature shaft 4 '. The shaft of the upper armature 3 has a bend which is directed downwards at right angles and which bears on the hot side 5 of the insulating body 1 and forms a bracket-like support 8, to which a section 9 running parallel to the armature shaft 4 adjoins the free end of the armature 3 , from which the leg 6 is bent.

Bei dem in Figur 2 gezeigten Anker 3' ist die Stütze 8' durch ein am Ankerschaft 4' angeschweißtes, recht-winkliges Winkelstück 10' gebildet. Dabei verläuft der am Ankerschaft 4' angeschweißte Winkelstück-Schenkel zum Ankerschaft 4' parallel, während der andere Winkelstück-Schenkel zum Schenkel 6' des Ankers 3' gleichgerichtet angeordnet ist.In the anchor 3 'shown in FIG. 2, the support 8' is formed by a right-angled angle piece 10 'welded to the anchor shaft 4'. The elbow leg welded to the armature shaft 4 'runs parallel to the armature shaft 4', while the other elbow leg is arranged in the same direction as the leg 6 'of the armature 3'.

Gemäß Figur 3 ist am Anker 3' zur Bildung einer Stütze 8' ein U-förmiges Winkelstück 10' angeschweißt, wobei beide Winkelstückschenkel zum Schenkel 6' des Ankers 3' gleichgerichtet sind.According to FIG. 3, a U-shaped angle piece 10 'is welded to the armature 3' to form a support 8 ', both angle piece legs being oriented in the same direction as the leg 6' of the armature 3 '.

Bei dem in Figur 4 dargestellten Anker 3' ist die Stütze 8' durch eine zum Schenkel 6' des Ankers 3' gleichgerichtete Faltung des Ankerschaftes 4' gebildet.In the armature 3 'shown in FIG. 4, the support 8' is formed by folding the armature shaft 4 'in the same direction as the leg 6' of the armature 3 '.

Claims (8)

  1. Device for holding meandering electric heating conductors (2) at a distance from the hot side (5) of the side walls of an insulating body (1) made from ceramic fibres in industrial furnaces, the heating conductors (2) being held in the regions of their upper and lower deflections by metallic anchors (3, 3'), in particular made from wire sections, arranged on the insulating body (1), it being the case in addition that the anchors (3, 3') have bracket-type supports (8, 8') which project laterally from the anchor shafts (4, 4') and can be placed against the hot side of the insulating body (1), and the supports (8) of the respective upper anchors (3) being formed by in each case one bend which adjoins the anchor shaft (4) and points downwards, characterized by the combination of the following features:
    a) The bend of the respective upper anchor (3) is constructed extending parallel to the hot side of the insulating body (1) and arranged bearing against the latter, and this bend is adjoined towards the free end of the anchor (3) by a section (9) which extends approximately parallel to the anchor shaft (4) and from which an upwardly pointing limb (6) is bent off in the direction opposite to the above-mentioned bend, and
    b) the respective lower anchors (3, 3') each have a downwardly pointing limb (6'), which is arranged on the free end of the anchor shaft (4') at a parallel distance from the hot side (5) of the insulating body (1), and a support (8') projecting transversely from the anchor shaft (4') and parallel to the limb (6').
  2. Device according to Claim 1, characterized in that the supports (8') of the lower anchors (3') are respectively constructed as a straight rod extending parallel to the limb (6') from the anchor shaft (4').
  3. Device according to Claim 2, characterized in that the support (8') constructed as a rod is welded to the anchor shaft (4').
  4. Device according to Claim 2, characterized in that the support (8') of a lower anchor ( 3 ' ) is respectively formed by folding the anchor shaft (4').
  5. Device according to Claim 1 or 2, characterized in that an angle (10') forming the support (8') is attached to the anchor shaft (4'), one limb of the angle (10') bearing against the anchor shaft (4') whereas the other angle limb is arranged at a parallel distance from the bent-away anchor limb (6').
  6. Device according to Claim 5, characterized in that the angle (10') is welded to the anchor (3').
  7. Device according to Claim 5, characterized in that the limb, bearing against the anchor shaft (4'), of the angle (10') has clips surrounding the anchor shaft (4').
  8. Device according to Claim 7, characterized by clips integrally formed on the angle (10').
EP89106479A 1988-05-13 1989-04-12 Holding device for electrical heating conductors in an industrial furnace Expired - Lifetime EP0341441B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3816420 1988-05-13
DE3816420A DE3816420A1 (en) 1988-05-13 1988-05-13 DEVICE FOR SUPPORTING ELECTRIC HEAT CONDUCTORS IN AN INDUSTRIAL STOVE

Publications (3)

Publication Number Publication Date
EP0341441A2 EP0341441A2 (en) 1989-11-15
EP0341441A3 EP0341441A3 (en) 1991-07-03
EP0341441B1 true EP0341441B1 (en) 1994-06-22

Family

ID=6354348

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89106479A Expired - Lifetime EP0341441B1 (en) 1988-05-13 1989-04-12 Holding device for electrical heating conductors in an industrial furnace

Country Status (3)

Country Link
EP (1) EP0341441B1 (en)
AT (1) ATE107830T1 (en)
DE (1) DE3816420A1 (en)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1638822A (en) * 1923-06-30 1927-08-16 Westinghouse Electric & Mfg Co Electric resistance furnace
US1767172A (en) * 1923-09-17 1930-06-24 Electric Furnace Co Resistor grid and method of supporting same
US4154975A (en) * 1977-03-04 1979-05-15 Sauder Industries, Inc. Method and apparatus for supporting electric heating elements in a furnace insulated with ceramic fiber
US4341916A (en) * 1980-10-30 1982-07-27 Manville Service Corporation Electric furnace insulation module
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
US4443881A (en) * 1982-06-01 1984-04-17 Northcutt Donald R Suspension system for electric heating elements
DE8803184U1 (en) * 1988-03-09 1988-05-05 Abicht, Roland, Ing.(grad.), 5828 Ennepetal Device for holding electrical heating conductors in industrial furnaces
DE3807721A1 (en) * 1988-03-09 1989-09-28 Abicht Roland DEVICE FOR SUPPORTING ELECTRIC HEAT CONDUCTORS IN INDUSTRIAL OVENS
DE8806344U1 (en) * 1988-05-13 1988-10-13 Abicht, Roland, Ing.(grad.), 5828 Ennepetal Device for holding electrical heating elements in an industrial furnace

Also Published As

Publication number Publication date
ATE107830T1 (en) 1994-07-15
EP0341441A3 (en) 1991-07-03
DE3816420C2 (en) 1990-05-17
EP0341441A2 (en) 1989-11-15
DE3816420A1 (en) 1989-11-23

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