EP0102465B1 - Dispositif d'ancrage du revêtement d'isolation d'un four électrique à résistances et de ses éléments de chauffage - Google Patents

Dispositif d'ancrage du revêtement d'isolation d'un four électrique à résistances et de ses éléments de chauffage Download PDF

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Publication number
EP0102465B1
EP0102465B1 EP83105996A EP83105996A EP0102465B1 EP 0102465 B1 EP0102465 B1 EP 0102465B1 EP 83105996 A EP83105996 A EP 83105996A EP 83105996 A EP83105996 A EP 83105996A EP 0102465 B1 EP0102465 B1 EP 0102465B1
Authority
EP
European Patent Office
Prior art keywords
holding device
furnace
extension
heating elements
electric resistance
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
Application number
EP83105996A
Other languages
German (de)
English (en)
Other versions
EP0102465A1 (fr
Inventor
Leo Saris
Hans Gürtler
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.)
Kanthal GmbH
Original Assignee
Kanthal GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kanthal GmbH filed Critical Kanthal GmbH
Priority to AT83105996T priority Critical patent/ATE19903T1/de
Publication of EP0102465A1 publication Critical patent/EP0102465A1/fr
Application granted granted Critical
Publication of EP0102465B1 publication Critical patent/EP0102465B1/fr
Expired legal-status Critical Current

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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/0003—Linings or walls
    • F27D1/0006—Linings or walls formed from bricks or layers with a particular composition or specific characteristics
    • F27D1/0009—Comprising ceramic fibre elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/0003—Linings or walls
    • F27D1/0036—Linings or walls comprising means for supporting electric resistances in the furnace
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/14—Supports for linings
    • F27D1/144—Supports for ceramic fibre materials

Definitions

  • the invention relates to a holding device made of high-temperature resistant material for an insulation of an electrical resistance furnace made of ceramic fiber material consisting of mats or molded parts, the outside of which is attached to structural elements of the furnace and the inside of which is attached to flanges of the holding device, wherein the holding device consists of a cup-like body with a bottom, a wall, the flange attached to the wall and facing outwards and an extension pointing towards the inside of the furnace, on which a holder for electrical resistance heating elements of the furnace is formed at a distance from the inner surface of the insulation , and wherein on the bottom of the holding device engages a means for releasably attaching the holding device to one of the structural elements of the furnace.
  • the holding device there consists of two of these cup-like bodies, the walls of which taper to a small extent and which are spaced apart from one another.
  • the annular space formed between the two flanges of both cup-like bodies serves to hold the electrical heating elements of the furnace with the advantage that the heating elements, which are very hot during operation, are kept at a distance from the inner surface of the insulation.
  • the heating elements can therefore be heated to a noticeably higher degree without the service life of the fiber material of the insulation suffering as a result.
  • the known holding device described can only be used on the side walls of the furnace.
  • the heating elements on the holding device do not find any reverberation on the furnace ceiling because they can only be placed on the cylindrical body between the two flanges of the holding device from above.
  • the invention is therefore based on the object of developing a holding device of the type mentioned at the outset such that the holding device can also be used on the ceiling of an electrical resistance furnace while maintaining its advantages.
  • the invention is characterized in that at least one passage opening serving as a holder for support tubes of the electrical resistance heating elements is formed in the extension of the holding device.
  • the heating elements are thus helically wound on support tubes in a known manner and the assembly consisting of the support tubes with the wound heating elements can now be inserted into the passage opening which is formed on the extension of the holding device.
  • the support tube with its heating element is thus held on all sides in the passage opening, so that the holding device according to the invention can be used not only advantageously on the side walls but also on the ceiling of such an oven, without any design changes.
  • the advantage remains that the actual heating element is held at a distance from the inner surface of the insulation made of the ceramic fiber material and the mats or molded parts forming the insulation are held with their inside on the flange of the holding device.
  • the extension can be hollow or solid. The same applies to the actual body of the holding device. If the extension is hollow, the support tubes with the heating elements can also be placed on the notches from above, which are formed by the openings in the wall of the hollow extension, provided that the holding device is used in the side wall of the furnace.
  • a hollow extension also requires less material, combined with a low heat capacity and low heat conduction. In some applications, however, it is advantageous if the extension - possibly including its solid body - because the holding device can then be subjected to higher mechanical loads.
  • extension is formed in one piece with the body, namely from high-temperature-resistant material, preferably from ceramic or metal.
  • the two parts can therefore not separate from each other even after a long period of operation, as is possible with the prior art described.
  • the extension is made separately from the actual body.
  • the extension has an inward-facing flange at one end which engages under the outward-facing flange of the body. As a result, both parts are permanently connected.
  • the support tubes mentioned for the electrical heating elements are usually profiled in a circular shape. There is therefore a particularly good hold of the support tube together with its heating coil if the passage opening has a circular cross section. If necessary, however, different cross sections can also be provided, for example oval or prism-shaped cross sections.
  • this can have a continuous transverse bore to form the passage opening.
  • the invention is based on all other contracting states with the exception of Italy a holding device with the features of the preamble of claim 1 applicable to these contracting states.
  • a holding device is described in the subsequently published WO 83/03517 (prior art under Article 54 (3) EPC).
  • the extension is massive there.
  • the invention is therefore characterized in that the extension is hollow.
  • the holding device shown consists of a body which, in the exemplary embodiments shown, tapers conically towards the outside of the furnace. Its outer surface is circular.
  • the body is pot-shaped, i.e. it has a wall and a floor. An all-round flange is formed on the free edge of the wall.
  • the floor has a circular or elongated hole for the passage of a fastener.
  • This fastener is a fastening pin or a fastening bolt. Its outer end with respect to the furnace is suitably connected to the stable structure of the furnace wall 7.
  • a fastening disc or fastening nut is pushed onto the fastening means and secures it at an adjustable distance on the bottom of the body.
  • the flange of the holding device lies either directly or via a washer on the inner surface of an insulating body 11 made of ceramic fiber material and thereby holds it against the furnace wall.
  • the body thus penetrates into a corresponding recess in the insulating body 11.
  • a plug made of insulating material can be inserted into the body in order to thermally protect the holding means.
  • An extension 13 is molded onto the body and has means for fastening support tubes 14 for electrical heating elements. These heating elements are shown in the figures as heating coils 15.
  • the support tube 14 with heating coil can therefore be attached to the side wall of a furnace or to the ceiling of the furnace.
  • the body together with its extension 13 is solid.
  • the extension has a continuous transverse bore similar to the passage opening mentioned for fastening the support pipes to the ceiling.
  • the body can also be held in the insulating body 11 in that its bottom rests on a support element, for example a grid, embedded in the insulating body 11.
  • a support element for example a grid
  • body and extension 13 shown The one-piece design of body and extension 13 shown is characterized by good durability. However, two-part or multi-part production can also be recommended for manufacturing reasons. Then the extension 13 has an inner flange which engages under the flange of the body. Other connections between the body and the extension 13 are also possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Furnace Details (AREA)
  • Resistance Heating (AREA)
  • Control Of Resistance Heating (AREA)

Claims (6)

1. Dispositif d'ancrage en matériau hautement réfractaire du revêtement d'isolation en forme de matelas ou de pièces façonnés d'un four à résistances électriques en céramique fibreuse, qui est fixé par son côté extérieur sur des éléments (7) de la structure du four et par son côté intérieur sur des brides du dispositif d'ancrage, le dispositif d'ancrage comprenant un corps en forme de godet avec un fond, une paroi, la bride fixée sur la paroi et orientée vers l'extérieur et un prolongement (13) dirigé vers l'intérieur du four, sur lequel est formé un support distant de la surface intérieure du revêtement d'isolation (11) et destiné à recevoir des éléments de chauffage électrique par résistance (15) du four, un moyen de fixation démontable du dispositif d'ancrage sur l'un des éléments. (7) de la structure du four étant engage dans le fond du dispositif d'ancrage, une ouverture de passage au moins servant de support pour des tubes porteurs (14) des éléments de chauffage électrique par résistance (15) étant ménagée dans le prolongement (13) du dispositif d'ancrage, caractérisé en ce que le prolongement (13) est creux.
2. Dispositif d'ancrage selon la revendication 1, caractérisé en ce que le prolongement (13) et le corps sont d'une seule pièce.
3. Dispositif d'ancrage selon la revendication 1, caractérisé en ce que le prolongement (13) comporte à l'une de ses extrémités une bride orientée vers l'intérieur qui s'engage sous la bride du corps orientée vers l'exterieur.
4. Dispositif d'ancrage selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'ouverture de passage est de section circulaire.
EP83105996A 1982-07-29 1983-06-20 Dispositif d'ancrage du revêtement d'isolation d'un four électrique à résistances et de ses éléments de chauffage Expired EP0102465B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83105996T ATE19903T1 (de) 1982-07-29 1983-06-20 Haltevorrichtung fuer die isolation eines elektrischen widerstandsofens sowie fuer dessen heizelemente.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3228319 1982-07-29
DE3228319A DE3228319C2 (de) 1982-07-29 1982-07-29 Haltevorrichtung für Matten oder Formteile aus keramischem Fasermaterial für einen Ofen

Publications (2)

Publication Number Publication Date
EP0102465A1 EP0102465A1 (fr) 1984-03-14
EP0102465B1 true EP0102465B1 (fr) 1986-05-21

Family

ID=6169607

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83105996A Expired EP0102465B1 (fr) 1982-07-29 1983-06-20 Dispositif d'ancrage du revêtement d'isolation d'un four électrique à résistances et de ses éléments de chauffage

Country Status (4)

Country Link
EP (1) EP0102465B1 (fr)
JP (1) JPS5946480A (fr)
AT (1) ATE19903T1 (fr)
DE (2) DE3228319C2 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0123165A1 (fr) * 1983-04-23 1984-10-31 Didier-Werke Ag Dispositif de fixation d'élément chauffant électrique aux modules de garnissage
DE3413215C2 (de) * 1984-04-07 1987-02-12 Nassheuer Industrieofenbau Und Elektrotechnik Gmbh & Co Kg, 5210 Troisdorf Befestigungsvorrichtung für elektrische Widerstandsheizleiter in einem Industrieofen
DE3344178C2 (de) * 1983-12-07 1986-01-23 Nassheuer Industrieofenbau Und Elektrotechnik Gmbh & Co Kg, 5210 Troisdorf Befestigungsvorrichtung für elektrische Widerstandsheizleiter in einem Industrieofen
DE3444974C1 (de) * 1984-12-10 1986-05-07 Nassheuer Industrieofenbau Und Elektrotechnik Gmbh & Co Kg, 5210 Troisdorf Befestigungsvorrichtung für elektrische Widerstandsheizleiter in einem Industrieofen
DE3419540C1 (de) * 1984-05-25 1985-11-28 Didier-Werke Ag, 6200 Wiesbaden Mehrlagiges Isolierbauteil
US4633636A (en) * 1985-01-22 1987-01-06 Alexander William E Retainer assembly
DE3803681C1 (fr) * 1988-02-06 1988-12-22 Roland Ing.(Grad.) 5828 Ennepetal De Abicht
DE3906986C1 (fr) * 1989-03-04 1990-07-19 Linn High Therm Gmbh, 8459 Hirschbach, De
US5282221A (en) * 1992-12-03 1994-01-25 Rolock, Inc. High temperature heating element standoff

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983003517A1 (fr) * 1982-04-02 1983-10-13 Haglund, John, Helge Dispositif de suspension pour elements de resistance dans des fours

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4030261A (en) * 1975-04-08 1977-06-21 The Babcock & Wilcox Company Ceramic cap for insulation anchor
GB1568603A (en) * 1977-01-15 1980-06-04 Carborundum Co Ltd Furnace linings
US4156792A (en) * 1977-09-14 1979-05-29 Bickley Furnaces Incorporated Electric furnace construction
FR2406793A1 (fr) * 1977-10-24 1979-05-18 Produits Refractaires Dispositif pour supporter un objet le long de la paroi interieure d'un four
FR2422919A1 (fr) * 1978-04-12 1979-11-09 Petroles Cie Techniques Nouveau procede de montage de coupelles refractaires d'immobilisation de panneaux de garnissage de fours a base de fibres ceramiques
JPS5777830A (en) * 1981-09-08 1982-05-15 Matsushita Electric Ind Co Ltd Steam oven

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983003517A1 (fr) * 1982-04-02 1983-10-13 Haglund, John, Helge Dispositif de suspension pour elements de resistance dans des fours

Also Published As

Publication number Publication date
DE3228319A1 (de) 1984-02-16
JPS5946480A (ja) 1984-03-15
DE3363583D1 (en) 1986-06-26
ATE19903T1 (de) 1986-06-15
EP0102465A1 (fr) 1984-03-14
DE3228319C2 (de) 1985-02-07

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