EP0195765A2 - Verfahren und Einrichtung zum Aufhängen eines elektrischen Widerstandselements - Google Patents

Verfahren und Einrichtung zum Aufhängen eines elektrischen Widerstandselements Download PDF

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Publication number
EP0195765A2
EP0195765A2 EP86850096A EP86850096A EP0195765A2 EP 0195765 A2 EP0195765 A2 EP 0195765A2 EP 86850096 A EP86850096 A EP 86850096A EP 86850096 A EP86850096 A EP 86850096A EP 0195765 A2 EP0195765 A2 EP 0195765A2
Authority
EP
European Patent Office
Prior art keywords
profile
elements
suspension
fibre
blocks
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.)
Withdrawn
Application number
EP86850096A
Other languages
English (en)
French (fr)
Other versions
EP0195765A3 (de
Inventor
Lars Göran Johansson
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 AB
Original Assignee
Kanthal AB
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 AB filed Critical Kanthal AB
Publication of EP0195765A2 publication Critical patent/EP0195765A2/de
Publication of EP0195765A3 publication Critical patent/EP0195765A3/de
Withdrawn legal-status Critical Current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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C3/00—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids
    • H01C3/10—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids the resistive element having zig-zag or sinusoidal configuration

Definitions

  • This invention relates to a method and device for suspension of an electric resistance heating element.
  • the invention is in the first place intended to be used in industrial furnaces.
  • the resistance elements are usually meander shaped with a varying number of loops.
  • the number of loops is usually in the interval of 5 to 50.
  • the loops are attached vertically on the inner walls of the furnace. To avoid deformation of the elements during operation every single loop should have a support or attachment on the wall.
  • This invention relates to suspension of meander shaped electrical resistance elements on fibre board walls i.e. rigid blocks or boards of ceramic fibre material.
  • Suspension of the resistance elements on fibre blocks involve several problems. To give the elements sufficient support as well as reduce the local pressure on the fibre blocks every single meander loop should have a support separately attached to the fibre blocks. The number of supports in a furnace can therefore be very large.
  • One way to solve the problem of the limited capacity of the blocks to endure pressure is letting the suspension devices be fixed in the steel construction or plating which generally forms the outer wall of the furnace.
  • the suspension devices have, however, a much higher thermal conductivity than the insulation material in the walls and letting the suspension devices be fixed in the outer walls leads to heat losses from the furnace by this way.
  • a further disadvantage are the installation problems involved with such solutions.
  • Another way to suspend elements on fibre blocks is to build suspension devices e.g.
  • This invention aims at giving a simple suspension of the elements with the possibility to place these anywhere on the furnace walls eliminating at the same time the above problems.
  • the invention is distinguished by the characteristics indicated in the patent claims.
  • the resistance element (1) shown in fig. 1 is suspended on a number of suspension devices (2) which best consists of profiles of the same material as the resistance element.
  • the profiles can be given the shape as shown in figures 3 and 4d. Without any previous making of holes in the fibre blocks such a profile can then be stuck into the block and provide the suspension device for a meander loop.
  • the profiles should be stuck into the fibre block by at least 2!3 of their length. The distribution of the profiles is considerably facilitated by the fact that these do not need to be set out until the furnace is finished and the elements shall be placed on the profiles.
  • the ready elements can there be used as master component for the installation of the profiles.
  • the profiles should be stuck into the wall with a gradient of about 45° against the vertical plane as it is shown in figure 2. In figure 2 two profiles (2) are shown which support an element (1) each.
  • the profiles are stuck into the fiberblocks (3) forming the inner wall of a furnace.
  • the furnace wall is also provided with a further insulation (4) and an outer wall (5) of sheet metal.
  • profiles be designed with different cross-sections as shown in fig. 4 a-d.
  • the profile should be such that the outer edges were bent minimum 60° from each other i.e. the angle which in fig. 4a has been marked by v 1 shall be minimum 60°.
  • the angle V2 should be about 120° which corresponds to the outer edges having been bent 60° from each other.
  • Fig. 5 shows the design type of the invention which fits the element of strip shaped material.
  • a bridge (6) is fixed, e.g. by welding.
  • the profile is stuck into one of the fibre blocks (3) forming the furnace wall whereafter the resistance element (1) is suspended and supported by the bridge.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Resistance Heating (AREA)
  • Furnace Details (AREA)
  • Details Of Resistors (AREA)
EP86850096A 1985-03-22 1986-03-19 Verfahren und Einrichtung zum Aufhängen eines elektrischen Widerstandselements Withdrawn EP0195765A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8501418 1985-03-22
SE8501418A SE447044B (sv) 1985-03-22 1985-03-22 Sett vid, och profil for, upphengning av meanderformade elektriska motstandselement

Publications (2)

Publication Number Publication Date
EP0195765A2 true EP0195765A2 (de) 1986-09-24
EP0195765A3 EP0195765A3 (de) 1987-05-27

Family

ID=20359605

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86850096A Withdrawn EP0195765A3 (de) 1985-03-22 1986-03-19 Verfahren und Einrichtung zum Aufhängen eines elektrischen Widerstandselements

Country Status (3)

Country Link
EP (1) EP0195765A3 (de)
JP (1) JPS61277188A (de)
SE (1) SE447044B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2788402A1 (fr) * 1999-01-07 2000-07-13 Michel Crusot La suspension de resistances electriques dans des paves de fibreux souples

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1078639A (fr) * 1953-04-03 1954-11-19 Heurtey & Cie Dispositif d'accrochage notamment pour les éléments de chauffage à résistances dans les fours
FR1091227A (fr) * 1954-01-08 1955-04-08 Perfectionnement à la construction des parois de fours électriques
EP0052840A1 (de) * 1980-11-24 1982-06-02 Kennecott Corporation Halterungsanlage oder Abstützung für elektrische Heizelemente in Öfen oder Einrichtungen, die mit keramischen Fasern isoliert sind
DE3224612A1 (de) * 1981-07-06 1983-01-27 General Signal Corp., 06904 Stamford, Conn. Stuetzvorrichtung fuer elektrische widerstandselemente
FR2519748A1 (fr) * 1980-10-30 1983-07-18 Manville Service Corp Module et garnissage d'isolation de la paroi interne d'un four, support d'element chauffant electrique pour ce module et procede de pose de modules d'isolation
US4493089A (en) * 1983-03-21 1985-01-08 Refractory Poroducts Co. Electric furnace insulation

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1078639A (fr) * 1953-04-03 1954-11-19 Heurtey & Cie Dispositif d'accrochage notamment pour les éléments de chauffage à résistances dans les fours
FR1091227A (fr) * 1954-01-08 1955-04-08 Perfectionnement à la construction des parois de fours électriques
FR2519748A1 (fr) * 1980-10-30 1983-07-18 Manville Service Corp Module et garnissage d'isolation de la paroi interne d'un four, support d'element chauffant electrique pour ce module et procede de pose de modules d'isolation
EP0052840A1 (de) * 1980-11-24 1982-06-02 Kennecott Corporation Halterungsanlage oder Abstützung für elektrische Heizelemente in Öfen oder Einrichtungen, die mit keramischen Fasern isoliert sind
DE3224612A1 (de) * 1981-07-06 1983-01-27 General Signal Corp., 06904 Stamford, Conn. Stuetzvorrichtung fuer elektrische widerstandselemente
US4493089A (en) * 1983-03-21 1985-01-08 Refractory Poroducts Co. Electric furnace insulation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2788402A1 (fr) * 1999-01-07 2000-07-13 Michel Crusot La suspension de resistances electriques dans des paves de fibreux souples

Also Published As

Publication number Publication date
SE447044B (sv) 1986-10-20
SE8501418L (sv) 1986-09-23
SE8501418D0 (sv) 1985-03-22
EP0195765A3 (de) 1987-05-27
JPS61277188A (ja) 1986-12-08

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Inventor name: JOHANSSON, LARS GOERAN