EP0044787A1 - Ofen mit austauschbaren Heizwänden zur Wärmebehandlung von Glasscheiben - Google Patents

Ofen mit austauschbaren Heizwänden zur Wärmebehandlung von Glasscheiben Download PDF

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Publication number
EP0044787A1
EP0044787A1 EP19810401146 EP81401146A EP0044787A1 EP 0044787 A1 EP0044787 A1 EP 0044787A1 EP 19810401146 EP19810401146 EP 19810401146 EP 81401146 A EP81401146 A EP 81401146A EP 0044787 A1 EP0044787 A1 EP 0044787A1
Authority
EP
European Patent Office
Prior art keywords
elements
wall
oven according
oven
fixed
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.)
Granted
Application number
EP19810401146
Other languages
English (en)
French (fr)
Other versions
EP0044787B1 (de
Inventor
Rolf Basten
Werner Pagel
Mario Roth
Walter Schamberg
Hans Peter Siemonsen
Josef Willems
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.)
Vegla Vereinigte Glaswerke GmbH
Saint Gobain Vitrage SA
Original Assignee
Vegla Vereinigte Glaswerke GmbH
Saint Gobain Vitrage SA
Saint Gobain Vitrage International SA
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 Vegla Vereinigte Glaswerke GmbH, Saint Gobain Vitrage SA, Saint Gobain Vitrage International SA filed Critical Vegla Vereinigte Glaswerke GmbH
Publication of EP0044787A1 publication Critical patent/EP0044787A1/de
Application granted granted Critical
Publication of EP0044787B1 publication Critical patent/EP0044787B1/de
Expired legal-status Critical Current

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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
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/14—Supports for linings
    • F27D1/145—Assembling elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B17/00—Furnaces of a kind not covered by any preceding group
    • F27B17/0016—Chamber type furnaces
    • 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
    • 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
    • F27D2001/0059—Construction elements of a furnace
    • F27D2001/0066—Movable or removable parts
    • 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
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0006—Electric heating elements or system
    • F27D2099/0008—Resistor heating
    • 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
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D2099/0058—Means for heating the charge locally
    • 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
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D2099/006—Auxiliary heating, e.g. in special conditions or at special times

Definitions

  • the invention relates to an oven for the thermal treatment of glass sheets, in particular an oven intended to bring these sheets to the bending and / or tempering temperature.
  • Such ovens generally consist of a frame in sections on which are fixed plates consisting of an insulating body carrying electrical heating elements.
  • the glass sheets can be treated in a horizontal position or in a vertical position.
  • they are conveyed either on a trolley which crosses the furnace, or directly on carrier rollers, or a gas cushion; the heating elements are arranged either in the roof of the oven, or under this roof.
  • the sheet is generally suspended from hanging clips supported by a mobile carriage on a rail located above the oven; the heating elements are then placed on the vertical walls of the oven opposite the glass sheets.
  • the interchangeable elements cover the entire wall, extending over the entire height of the oven; in horizontal direction their length is at least equal to the height. They therefore have large dimensions and a high weight because the insulating wall consists of a refractory material mounted in a frame of corresponding dimensions. Their replacement can only be done with great difficulty.
  • the object of the invention is to improve such an oven with interchangeable elements by making it possible to replace defective elements with a minimum of work and in a very short time.
  • the design of this oven will allow it to be mounted very simply; it will take into account the expansion of the wall elements and will allow them to be adjusted precisely.
  • the oven can be made of light materials and will therefore have, - because of its reduced mass, a low heat capacity, which will make it easier to adjust.
  • the oven according to the invention is such that at least one of its walls is made up of a set of elements of small dimension relative to the surface. of the wall, each of which is formed of a plate provided on its rear face with a support member, several of these elements being slidably fixed by their support member on the same carrier rail running all along the wall , a number of supporting rails supporting the corresponding wall elements being fixed on the framework of the furnace in a removable manner and adjustable in position.
  • the various wall elements may, because of their relatively small dimensions, be provided on their rear face with simple support members, and the faces along which the neighboring elements come into contiguous contact may be free of any projecting part. They can therefore be assembled without discontinuity to form the wall of the furnace, without however posing difficulties for their replacement because they are mobile, both in groups forming wall segments integral with a carrier rail, and individually along this rail. It is thus possible to separate the various segments from one another in order to remove one, after having freed from the frame the rail which supports it, without being hindered by the neighboring segments previously spaced apart or damaging the adjacent surfaces. On the carrier rail thus released, it is then possible to unlock the supports of the various elements and to slide them to release them.
  • the carrier rail After replacing the element (s) to be exchanged, the carrier rail is again placed on the frame of the oven. The position of the supporting rails and that of the elements on these rails are then adjusted so as to constitute by juxtaposition of the various elements a continuous wall.
  • a particularly advantageous version is obtained by the use of wall elements, the insulating part of which is a plate made of ceramic fibers.
  • the heating devices can then consist of radiant bodies suspended freely on supports fixed on the insulating plates or incorporated in whole or in part in the insulating plates.
  • Such ceramic fiber wall elements have the advantage that, given their very low weight, they can be provided with very simple support devices which leave their lateral faces completely free, thus making it possible to attach them to neighboring elements.
  • the furnace shown in the figures is a quenching furnace for glass sheets suspended from hanging clamps in which these sheets are heated to a temperature close to the softening point.
  • This oven has, in its roof, a slit-shaped passage through which the glass sheet is lowered into the oven, then raised out of the oven as soon as it has reached the desired temperature.
  • Such ovens can also be made in so-called "through” ovens.
  • the glass sheet hanger then moves along the roof slot, thereby transporting the glass sheet lengthwise from the oven.
  • the inlet and outlet walls may then also have a slot for the passage of the glass sheet.
  • the invention relates to the structure of the walls provided with these organs.
  • the oven shown in Figure 1 in its essential parts includes a steel frame composed of horizontal profiles, 1 at the bottom and 2 at the top, vertical profiles 3 at the corner of the large faces of the oven and the end walls. , and of transverse sections 4, connecting the two large faces.
  • a steel frame composed of horizontal profiles, 1 at the bottom and 2 at the top, vertical profiles 3 at the corner of the large faces of the oven and the end walls.
  • transverse sections 4 connecting the two large faces.
  • the assembly thus described composed of the metal frame and the parts of refractory material, sole, roof and end walls, forms a self-supporting structure; it constitutes the framework of the oven, and the heating walls which themselves do not contribute to the stability of the system are arranged between the elements of the framework.
  • the wall openings left free between the elements of the framework are filled with a set of rectangular or square wall elements 12, mounted contiguously. These elements carry, on the face facing the interior of the oven, heating resistors 13 which may be totally or partially incorporated therein, or be suspended from supports in front of this face; they consist of an insulating body of low specific weight and high insulating power.
  • the "FIBROTHAL” (registered trademark) heating modules from the company BULTEN-KANTHAL GmbH are used for this purpose, essentially consisting of a plate of ceramic fibers and which have a very low specific weight of 200 kg / m 3.
  • the heating elements of these modules are resistors incorporated in the front face of the insulating body. Because of their very low mass, the thermal inertia of these modules is extremely reduced, so that an oven made of such elements has a very short heating and cooling time, which makes precise temperature regulation easier. .
  • Each element 12 is provided with a support constituted by a tube 15 joined at one end to a metal plate 16 and at the other end to a sleeve 17.
  • the metal plate 16 is fixed to the wall element 12, preferably by means of a heat resistant lut, this directly on the rear part of the wall element as shown in FIGS. 1 and 4 or by means of an additional insulating body 18 as shown in FIG. 2.
  • the insulating power of the wall element is thus reinforced if necessary.
  • Several wall elements 12 provided with their supports are placed on a profiled support rail 22 by sliding the sleeves 17 of their support along the support rail. When the location of the sleeves on the rail 22 is correct, they are locked by a wing nut 23.
  • the support rails 22 are then arranged vertically against the frame of the furnace so that the wall elements 12 projecting in front of the rail 22 can be introduced at the corresponding location on the wall.
  • the supporting rails 22 can, as shown in FIG. 1, be fixed to the profiles 1 and 2 of the frame by means of screws 24 in slots 25 which allow them to be moved horizontally to ensure correct positioning of the elements wall 12.
  • FIG. 2 Another advantageous embodiment for fixing the vertical support rails 22 on the sections 1 and 2 of the framework of the furnace is shown in FIG. 2.
  • Each carrier rail is provided at its upper and lower ends with a rotary lock 28 actuated by a lever 29.
  • a rotary lock 28 actuated by a lever 29.
  • the bolt 30 of the lock 28 is pressed against the wing of the corresponding section 1 or 2, or else it is released from these profiles if one of the wall elements 12 superimposed on the rail 22 to form the wall segment must be removed for exchange or repair.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Tunnel Furnaces (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Furnace Details (AREA)
EP19810401146 1980-07-21 1981-07-20 Ofen mit austauschbaren Heizwänden zur Wärmebehandlung von Glasscheiben Expired EP0044787B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8015999A FR2487058A1 (fr) 1980-07-21 1980-07-21 Four a parois chauffantes interchangeables pour le traitement thermique de feuilles de verre
FR8015999 1980-07-21

Publications (2)

Publication Number Publication Date
EP0044787A1 true EP0044787A1 (de) 1982-01-27
EP0044787B1 EP0044787B1 (de) 1985-05-29

Family

ID=9244328

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810401146 Expired EP0044787B1 (de) 1980-07-21 1981-07-20 Ofen mit austauschbaren Heizwänden zur Wärmebehandlung von Glasscheiben

Country Status (7)

Country Link
EP (1) EP0044787B1 (de)
JP (1) JPS5751135A (de)
BR (1) BR8104668A (de)
DE (2) DE3128655C2 (de)
ES (1) ES504115A0 (de)
FR (1) FR2487058A1 (de)
YU (1) YU42021B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2561749A1 (fr) * 1984-03-23 1985-09-27 Gruenzweig & Hartmann Montage Structure de support pour l'isolation thermique d'installations telles que, notamment, generateurs de vapeur
DE3422342A1 (de) * 1984-03-23 1985-10-03 G + H Montage Gmbh, 6700 Ludwigshafen Stuetzkonstruktion fuer eine waermedaemmung
CN103727785A (zh) * 2014-01-17 2014-04-16 贵州渝黔实业有限公司 一种用于组装移动式隧道窑的组件及其组装方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0336879Y2 (de) * 1984-09-10 1991-08-05
ITRE20070024A1 (it) * 2007-02-27 2008-08-28 Sacmi Forni Spa '' forno a tunnel modulare, metodo e attrezzatura per il montaggio dello stesso ''
JP5599492B1 (ja) * 2013-06-03 2014-10-01 中外炉工業株式会社 スタッドボルト接続部材及び工業炉の内面改修方法
CN104120217B (zh) * 2014-07-10 2017-05-10 中石化南京工程有限公司 拼装式热处理加热炉及其建造方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3363889A (en) * 1966-07-21 1968-01-16 Loftus Engineering Corp Industrial furnace and oven wall
US3958519A (en) * 1975-02-18 1976-05-25 Merkle & Associates, Inc. High temperature furnace construction and hangers therefor
US4045924A (en) * 1975-12-15 1977-09-06 S. J. Agnew Furnace roof construction
US4083155A (en) * 1977-03-14 1978-04-11 Lampert Albert J Thermally insulated enclosure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3363889A (en) * 1966-07-21 1968-01-16 Loftus Engineering Corp Industrial furnace and oven wall
US3958519A (en) * 1975-02-18 1976-05-25 Merkle & Associates, Inc. High temperature furnace construction and hangers therefor
US4045924A (en) * 1975-12-15 1977-09-06 S. J. Agnew Furnace roof construction
US4083155A (en) * 1977-03-14 1978-04-11 Lampert Albert J Thermally insulated enclosure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2561749A1 (fr) * 1984-03-23 1985-09-27 Gruenzweig & Hartmann Montage Structure de support pour l'isolation thermique d'installations telles que, notamment, generateurs de vapeur
DE3422342A1 (de) * 1984-03-23 1985-10-03 G + H Montage Gmbh, 6700 Ludwigshafen Stuetzkonstruktion fuer eine waermedaemmung
CN103727785A (zh) * 2014-01-17 2014-04-16 贵州渝黔实业有限公司 一种用于组装移动式隧道窑的组件及其组装方法

Also Published As

Publication number Publication date
YU177681A (en) 1983-10-31
JPS649248B2 (de) 1989-02-16
DE3128655C2 (de) 1984-12-13
ES8205461A1 (es) 1982-06-16
DE3128655A1 (de) 1982-06-09
BR8104668A (pt) 1982-04-06
FR2487058B1 (de) 1982-10-08
JPS5751135A (en) 1982-03-25
DE3170708D1 (en) 1985-07-04
EP0044787B1 (de) 1985-05-29
YU42021B (en) 1988-04-30
FR2487058A1 (fr) 1982-01-22
ES504115A0 (es) 1982-06-16

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