EP0666013A1 - Element chauffant - Google Patents

Element chauffant

Info

Publication number
EP0666013A1
EP0666013A1 EP94924804A EP94924804A EP0666013A1 EP 0666013 A1 EP0666013 A1 EP 0666013A1 EP 94924804 A EP94924804 A EP 94924804A EP 94924804 A EP94924804 A EP 94924804A EP 0666013 A1 EP0666013 A1 EP 0666013A1
Authority
EP
European Patent Office
Prior art keywords
flange
heating element
protective tube
ceramic
element according
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Withdrawn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
EP94924804A
Other languages
German (de)
English (en)
Inventor
Anke BRANDSTÄDTER-SPRINGER
Ludwig Weiler
Hans Ammon
Fritz Hegewaldt
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.)
Alstom KK
Original Assignee
ABB Gadelius KK
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 ABB Gadelius KK filed Critical ABB Gadelius KK
Publication of EP0666013A1 publication Critical patent/EP0666013A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F27D11/00—Arrangement of elements for electric heating in or on furnaces
    • F27D11/02—Ohmic resistance heating
    • 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
    • H05B3/02—Details
    • H05B3/04—Waterproof or air-tight seals for heaters
    • 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
    • H05B3/64—Heating elements specially adapted for furnaces using ribbon, rod, or wire heater

Definitions

  • the invention relates to a heating element for a deglor oven according to the preamble of claim 1.
  • Deglor ovens are used for the glazing of ashes from waste incineration plants. Contaminants contained in the ash are evaporated and separated. The glazed components can be used as building materials or deposited. Deglor ovens operate at temperatures between 1300 ° C and 1500 ° C. For this purpose, each deglor oven is provided with heating elements in its ceiling area. The heating elements are surrounded on the outside by a protective tube made of ceramic. This tube is closed at its first end and open at the second end. The protective tubes used up to now have an outwardly directed flange at their open end, which is made from one piece together with the protective tube. These flanges are used to hold the protective tubes on the ceiling stones of the deglor furnace. Due to temperature fluctuations and corrosion to which the protective tubes are exposed, the ceramic tubes can be destroyed. This requires a complete replacement of the heating element, which is very time-consuming.
  • the invention has for its object to show a heating element in which the disadvantages of the known devices are excluded. This object is achieved by the features of claim 1.
  • the ceramic protective tube has at its open end a flange which is attached to the outer surface of the protective tube chemically or mechanically.
  • a ceramic protective tube can be produced more cost-effectively than protective tubes of the type described in the introduction.
  • the flange can be formed by a ceramic ring with a defined width or a metallic clamp.
  • the flange made of ceramic is permanently attached to the outer surface of the protective tube with a ceramic adhesive or putty.
  • a metal clamp as a flange instead of a ceramic ring.
  • a ceramic fleece is arranged as an intermediate layer between the metallic clamp and the protective tube. The clamp is attached to the outer surface of the protective tube using one or more screws.
  • a U-shaped heating element is arranged inside the protective tube. Its ends are led through a cover to the electrical connections to the outside.
  • the lid is made of ceramic or metal and serves as a holder for the U-shaped heating element.
  • the cover closes the interior of the protective tube and is placed on the upper edge of the protective tube or on the flange. Further features essential to the invention are characterized in the subclaims.
  • 1 is a heating element with a ceramic flange
  • FIG. 2 shows a heating element with a metallic flange.
  • Figure 1 shows a heating element 1, which is surrounded by a protective tube 2 and within which a heating rod 3 is arranged.
  • the protective tube 2 is formed as a tube closed on one side and is made of a ceramic material. A nitridic, oxidic or carbidic high-performance ceramic is preferably used for this.
  • the first end of the protective tube 2, which is closed by a round dome 2A, projects into a deglor oven 10.
  • the second open end of the protective tube is provided with a flange 4 on the outside.
  • This flange 4 is formed by a ceramic ring.
  • This ceramic ring is made of a nitridic, oxidic or carbidic high-performance ceramic.
  • the ring 4 can be produced from alpha aluminum oxide. With the aid of a silicate-ceramic or phosphate-ceramic adhesive 4 or a cement, this ring is permanently attached to the outside at the second end 2B of the protective tube 2.
  • the flange 4 is inserted into a U-shaped recess 11U of a ceiling stone 11 of the deglor furnace 10.
  • the U-shaped recess has an opening 11E, the diameter of which is selected so that the protective tube 2 can be arranged in such a way that it protrudes almost completely into the deglor oven 10.
  • the flange 4 of the protective tube 2 is placed on the lower boundary surface of the U-shaped recess 11U and serves as a holder for the heating element 1.
  • the flange 4 covers the opening 11E in the edge region and the inner region 10 I of the deglor furnace 10 closed to the outside.
  • a disk-shaped cover 2D made of ceramic or metal is placed on the protective tube 2.
  • the ends 3E of the U-shaped heating element 3 are inserted through it and lead to the outside to electrical connections (not shown here).
  • the two ends 3E of the heating element 3 are designed in such a way that they can be connected to the cover 2D, so that the heating element 3 is permanently attached.
  • the disk-shaped cover 2D is the one shown here Embodiment placed on .. ⁇ n upward facing edge of the protective tube 2.
  • the interior of the protective tube 2 is thereby closed to the outside.
  • the U-shaped heating element 3 is surrounded by the cover 2D over a length of about two thirds of its length by a fiber insulation 6.
  • FIG. 2 shows a further embodiment of the heating element 1 according to the invention.
  • This embodiment is preferably used when the protective tube 2 or the heating rod 3 arranged in it are longer than in the embodiment shown in FIG.
  • the heating element 1 shown in Figure 2 in turn has a protective tube 2, within which a U-shaped heating element 3 is arranged.
  • the second ends 3E of the heating element 3 are led through the disc-shaped cover 2D of the protective tube 2 to the outside and connected to electrical connections (not shown here).
  • the cover 2D is also placed on the edge of the protective tube 2.
  • the flange 4 arranged at the upper end of the protective tube 2 is formed by a metallic clamp 4 which is formed in one or more parts.
  • the parts of the clamp 4 are arranged around the upper outer end of the protective tube 2 and are permanently connected to one another by means of screws 4S.
  • a ceramic fleece 4V is arranged between the clamp 4 and the protective tube 2 and can additionally absorb compressive forces.
  • certain ceiling stones 11 are provided with passages 11E. The diameters of these passages 11E are adapted to the outer diameter of the protective tubes 2. This makes it possible to insert the protective tubes 2 through the ceiling stones 11 into the interior of the deglor furnace 10.
  • the protective tube 2 is held by its upper end attached flange 4, which in this case is formed by the metallic clamp. Since the second end 2E of the protective tube 2 is arranged outside the ceiling 10D of the deglor furnace, a metallic flange can be used to hold the heating element 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Details (AREA)
  • Resistance Heating (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Abstract

L'invention concerne un élément chauffant (1) pour un four Deglor (10), où la tige chauffante (3) est entourée d'un tube protecteur (2). Ce dernier (2) est pourvu d'un collet (4) qui assure son maintien et qui est formé par un anneau céramique ou un collier de serrage métallique. Ce collet (4) est relié de manière durable mécaniquement ou chimiquement à la surface extérieure du tube protecteur (2).
EP94924804A 1993-08-26 1994-07-26 Element chauffant Withdrawn EP0666013A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4328718A DE4328718A1 (de) 1993-08-26 1993-08-26 Heizelement
DE4328718 1993-08-26
PCT/EP1994/002463 WO1995006399A1 (fr) 1993-08-26 1994-07-26 Element chauffant

Publications (1)

Publication Number Publication Date
EP0666013A1 true EP0666013A1 (fr) 1995-08-09

Family

ID=6496083

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94924804A Withdrawn EP0666013A1 (fr) 1993-08-26 1994-07-26 Element chauffant

Country Status (5)

Country Link
US (1) US5605645A (fr)
EP (1) EP0666013A1 (fr)
JP (1) JPH08506929A (fr)
DE (1) DE4328718A1 (fr)
WO (1) WO1995006399A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4446530A1 (de) * 1994-12-24 1996-06-27 Abb Patent Gmbh Deglorofen
DE19529190A1 (de) * 1995-08-09 1997-02-13 Abb Patent Gmbh Deglorofen
DE19630529A1 (de) * 1996-07-29 1998-02-05 Abb Research Ltd Heizelement
KR101560373B1 (ko) 2012-12-05 2015-10-15 김노을 전극 유닛을 갖는 전극 보일러
JP6206793B2 (ja) * 2013-04-05 2017-10-04 東海高熱工業株式会社 加熱炉の発熱体取り付け構造
US11096250B2 (en) * 2014-10-31 2021-08-17 Ngk Spark Plug Co., Ltd. Ceramic heater and manufacturing method for same
CN109775960B (zh) * 2018-12-26 2024-03-15 洛阳西格马炉业股份有限公司 一种矿物棉用的加热系统及用其加热矿物棉的方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1459307A (en) * 1922-04-08 1923-06-19 Clemens A Laise Electric heating unit
US1618861A (en) * 1923-12-11 1927-02-22 Clark Engineering Corp Vacuum means for conserving lubricating oil of internal-combustion engines
US1517301A (en) * 1924-02-18 1924-12-02 Harvey F Mcmichael Liquid heater
US1662555A (en) * 1926-12-18 1928-03-13 Wojciechowski Edward Universal bottle heater
US1797712A (en) * 1929-10-09 1931-03-24 Clarence M Brodnax Electric heating unit
DE717668C (de) * 1937-06-12 1942-02-20 Siemens Planiawerke Ag Elektroofen mit elektrischen Widerstandsheizkoerpern
GB909031A (en) * 1958-01-22 1962-10-24 Wild Barfield Electr Furnaces Improvements in electric heating elements for furnaces
FR1392081A (fr) * 1964-03-19 1965-03-12 Pannier Corp Dispositif de raccordement des extrémités d'une bande d'impression en élastomère
FR1393081A (fr) 1964-05-12 1965-03-19 Morganite Thermal Designs Ltd Four électrique, notamment pour la fusion des métaux
US4205233A (en) * 1978-11-22 1980-05-27 Raytheon Company Automatic bucky lock
FR2559886B1 (fr) * 1984-02-16 1988-04-22 Electricite De France Dispositif de chauffage electrique comportant un element chauffant resistif
DE3736843A1 (de) * 1987-10-30 1989-05-11 Asea Brown Boveri Verfahren zum verbinden von metallischen und keramischen werkstoffen
DE4014246A1 (de) 1990-05-04 1991-11-07 Linn Horst Dipl Ing Fh Heizeinrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9506399A1 *

Also Published As

Publication number Publication date
DE4328718A1 (de) 1995-03-02
US5605645A (en) 1997-02-25
WO1995006399A1 (fr) 1995-03-02
JPH08506929A (ja) 1996-07-23

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