EP1906125B1 - Ofen mit Rahmen - Google Patents

Ofen mit Rahmen Download PDF

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Publication number
EP1906125B1
EP1906125B1 EP07291029A EP07291029A EP1906125B1 EP 1906125 B1 EP1906125 B1 EP 1906125B1 EP 07291029 A EP07291029 A EP 07291029A EP 07291029 A EP07291029 A EP 07291029A EP 1906125 B1 EP1906125 B1 EP 1906125B1
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EP
European Patent Office
Prior art keywords
flue
tiles
kiln
supports
conduit
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.)
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Application number
EP07291029A
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English (en)
French (fr)
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EP1906125A1 (de
Inventor
Philippe Hatton
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Ceric SARL
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Ceric SARL
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Publication date
Application filed by Ceric SARL filed Critical Ceric SARL
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Classifications

    • 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
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types

Definitions

  • the present invention relates generally to furnaces used for cooking products such as earthenware or ceramic products.
  • furnaces are usually in the form of a tunnel of great length crossed by trolleys carrying the products to be cooked.
  • Circulation of fluid, air or any other suitable gas creates a gaseous stream ensuring the ventilation and heating of the products for cooking.
  • the temperature, the hygrometric degree, the speed of movement of the gas stream are continuously monitored in order to ensure a good quality treatment of the products to be cooked.
  • said gas stream enters the chamber through wells or slots in the wall thereof, in the vault or in the side walls.
  • Means, such as fans, are arranged in the ventilation circuit, usually outside the enclosure, to ensure the circulation of the gas stream.
  • the present invention aims to provide a device for creating a gas circulation in a baking oven, said device being more particularly adapted to be implemented in tunnel furnaces usually called gantry ovens.
  • tunnel furnaces usually called gantry ovens.
  • These furnaces owe their name to inverted U-shaped gantries, consisting of a horizontal beam and two feet, arranged next to each other to form an external framework of the tunnel furnace intended to carry the elements constituting the enclosure of the furnace.
  • the gantries arranged outside the furnace, above the upper wall thereof, are constituted by metal profiles.
  • Supports for fastening the refractory wall of the furnace are carried by said gantries.
  • suspension pieces carried by the horizontal beam of each gantry constitute a support similar to a globally inverted T-shaped beam arranged horizontally.
  • Interjoists are positioned perpendicular to said supports, resting on the heels vis-à-vis two adjacent supports one of the other.
  • the side walls of the oven are made in a similar manner by supports fixed on the feet of the porticoes between which are interjoists.
  • An insulating coating is placed on the outer surfaces of the furnace chamber interjoists to reduce heat loss to the outside of the useful space, or laboratory oven.
  • suspension parts and interjoists are for example made of refractory materials.
  • the gantry furnace of the kind comprising a plurality of gantries arranged parallel to each other and defining the bays of the furnace, and supports fixed to said gantries between which are positioned interlocks constituting the walls of the furnace, is characterized in that at least some interjoists are constituted by a plug of axis parallel to said supports.
  • a gantry furnace of known type comprises a plurality of inverted U-shaped metal gantries 1 consisting of a horizontal beam 11 and two legs 13. These gantries 1 are positioned one after the other. parallel to the others and constitute an external framework of the furnace for supporting the elements constituting the enclosure of the furnace.
  • Two porticos 1 neighbors one of the other define between them a span 10 of the oven.
  • Each horizontal beam 11 of gantry carries, by the implementation of fastening means 12, a plurality of suspension parts 200 positioned next to each other.
  • Said suspension pieces 200 constitute a horizontal support 2 similar to a beam with inverted T-shaped section.
  • the sole 21 of such a support 2 is wider than the core 20 and forms on either side of this core 20 a support 23 extending longitudinally over the entire length of said support 2.
  • Entrevous 3 generally parallelepiped are positioned between two supports 2 adjacent to each other being oriented perpendicular to said supports 2. Said intervous shown in the drawing have protruding edges 32 placed on the supports 23 vis-à-vis the supports 2.
  • An insulating coating 34 covers the upper faces of interjoists 3.
  • some intervous 3 are constituted by a plug 4 of generally rectangular section.
  • Said bush 4 replace the interjoists 3 and are positioned in the same manner as the latter, next to each other in the width of the oven, being placed on the supports 23 of the supports 2.
  • Said plugs 4 positioned next to one another in a span constitute a transverse duct 45 extending parallel to said supports 2.
  • said transverse duct 45 constituted by the invention, forms a passage in which it is possible to circulate a gaseous fluid for improving ventilation of rooms during cooking.
  • the transverse duct 45 extends over at least a portion of the length of the supports 2 between which it is positioned, its length is defined by the number of plugs 4 positioned next to each other.
  • the plugs 4 extend entirely between the webs 20 of the supports 2, and above the soles 21 of said supports 2 to provide a conduit 45 of the largest possible section.
  • the bushlets 4 comprise a lower part extending between the flanges 21.
  • the plugs 4 are made of refractory material.
  • Different types of plugs 4 are provided to fulfill different functions in the ventilation system and constitute a family of elements from which the designer of the oven chooses according to the flow of the predetermined gaseous fluid to be obtained.
  • FIGS. figures 2 and 3 Two embodiments and assembly of a fan are shown in FIGS. figures 2 and 3 for example.
  • distribution bushels are visible on the figure 3 they have at least one orifice 41 in their lower face facing the furnace laboratory.
  • remotely controllable shutters are disposed in front of the orifices 41 of said distribution plugs 401 in order to allow adjustment of the size of the free passage.
  • End bushings 402 are also shown in the drawing, these bushlets 402 have one end closed by a transverse wall 42 defining the end of the conduit 45.
  • bushels may be added to this family, for example a single plug 403 which constitutes a transverse conduit portion 45 but does not have any particular element or a shutter plug in which a flap, possibly adjustable from the outside, reduces the section of the transverse duct 45.
  • the transverse duct 45 formed by the plugs 4 is used to suck the gaseous fluid present in the furnace laboratory and return it to said laboratory at different points along said duct.
  • the fan 5 is chosen so as to suck the gaseous fluid present in the laboratory through the opening 40 of the plug-fan 400 and to discharge it through the openings 41 of the distribution bushings 401, or vice versa.
  • transverse duct portions 45 are created if necessary in the same bay by placing end plugs 402 at the appropriate locations along the supports 2, a transverse duct 45 in two parts is represented by way of example at the figure 3 .
  • the side walls of the furnace have a constitution similar to that of the vault and comprise fastening pieces 600 fixed to the feet 13 of the frames 1 in order to form vertical supports 6 between which are positioned interjoists 3 identical to those used in the vault.
  • a vertical duct 46 is constituted in at least one longitudinal wall of the furnace and connected, if necessary to the transverse duct 45 disposed in the same bay.
  • a vertical duct 46 is made in the same way as a transverse duct 45 according to the invention, replacing the interjoists 3 of a span by bushels 4 selected from the bushel family as a function of the gaseous fluid circulation to be ensured. .
  • a wedge bush 405 provides the connection between a transverse duct 45 and a vertical duct 46.
  • the implementation of the bushings 4 according to the invention makes it possible to better regulate the circulation of gaseous currents around the parts to be treated by adapting the position of the openings in the transverse and / or vertical ducts.
  • openings 41 are positioned along the vertical ducts 46 at selected heights in order to ensure a privileged circulation of the gaseous currents at the level of the load carried by the wagons or at the level of adapted zones provided in the spaces. lower of said wagons.
  • the transverse conduits 45 and vertical 46 are connected to external fluid distribution means and can then be used to remove gaseous fluid circulating in the oven and replace it by injecting air, or any other gaseous fluid.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Details (AREA)
  • Baking, Grill, Roasting (AREA)
  • Manufacturing And Processing Devices For Dough (AREA)
  • Electric Ovens (AREA)
  • Electric Stoves And Ranges (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Tunnel Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Cookers (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Constitution Of High-Frequency Heating (AREA)

Claims (10)

  1. Portalofen der Art mit einer Mehrzahl von Portalen (1), die parallel zueinander angeordnet sind und Ofenabteile festlegen, und mit Stützen (2, 6), die an den Portalen (1) befestigt und zwischen denen Einschübe (3) angebracht sind, welche die Wände des Ofens bilden, dadurch gekennzeichnet, daß wenigstens einige der Einschübe (3) von einem Hohlstein (4) mit einer zu den Stützen (2, 6) parallelen Achse gebildet sind.
  2. Ofen nach Anspruch 1, dadurch gekennzeichnet, daß die Hohlsteine (4) in einem Ofenabteil nebeneinander angebracht sind und einen quer (45) und/oder vertikal (46) verlaufenden Kanal bilden, der parallel zu den Stützen (2, 6) verläuft.
  3. Ofen nach Anspruch 2, dadurch gekennzeichnet, daß der Kanal (45) über zumindest einen Abschnitt der Länge der Stützen (2, 6), zwischen denen er angebracht ist, verläuft.
  4. Ofen nach Anspruch 2 oder Anspruch 3, dadurch gekennzeichnet, daß ein quer verlaufender Kanal (45) an mindestens einen vertikal verlaufenden Kanal (46) angeschlossen ist.
  5. Ofen nach einem vorhergehenden Anspruch, dadurch gekennzeichnet, daß der Hohlstein (4) einen allgemein rechtwinkeligen Querschnitt aufweist.
  6. Ofen nach einem vorhergehenden Anspruch, dadurch gekennzeichnet, daß die Hohlsteine (4) von unterschiedlicher Art sind, z. B. Ventilations-Hohlstein, Verteiler-Hohlstein, Endstein, einfacher Hohlstein, Klappen-Hohlstein, ...
  7. Ofen nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß ein Eckstein die Verbindung zwischen dem quer verlaufenden Kanal (45) und einem vertikal verlaufenden Kanal (46) gewährleistet.
  8. Ventilationsverfahren für einen Portalofen nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß man
    - quer (45) und/oder vertikal (46) verlaufende Kanäle in zumindest einigen der Ofenabteile ausbildet, indem man Einschübe in Form von Hohlsteinen (4) anbringt, und
    - ein gasförmiges Fluid zwischen der Ofeneinfassung und diesen quer (45) und/oder vertikal (46) verlaufenen Kanälen zirkulieren läßt.
  9. Ventilationsverfahren für einen Portalofen gemäß Anspruch 8, dadurch gekennzeichnet, daß eine vorbestimmte Zirkulation von gasförmigem Fluid erreicht wird, indem man die Hohlsteine, die zur Bildung jedes Kanals (45, 46) vorgesehen sind, aus einer Familie auswählt, die z. B. Ventilations-Hohlsteine (400), Verteiler-Hohlsteine (401), Endsteine (402), einfache Hohlsteine (403), Klappen-Hohlsteine, Ecksteine, ... umfaßt.
  10. Ventilationsverfahren für einen Portalofen gemäß Anspruch 8 oder Anspruch 9, dadurch gekennzeichnet, daß man zumindest einige der quer und/oder vertikal verlaufenden Kanäle an externe Fluidverteilungsmittel anschließt.
EP07291029A 2006-09-27 2007-08-22 Ofen mit Rahmen Active EP1906125B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0608498A FR2906354B1 (fr) 2006-09-27 2006-09-27 "four portique"

Publications (2)

Publication Number Publication Date
EP1906125A1 EP1906125A1 (de) 2008-04-02
EP1906125B1 true EP1906125B1 (de) 2009-10-28

Family

ID=37744641

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07291029A Active EP1906125B1 (de) 2006-09-27 2007-08-22 Ofen mit Rahmen

Country Status (5)

Country Link
US (1) US7950922B2 (de)
EP (1) EP1906125B1 (de)
AT (1) ATE447152T1 (de)
DE (1) DE602007002965D1 (de)
FR (1) FR2906354B1 (de)

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2255617A (en) * 1940-07-20 1941-09-09 Clarence B Hoak Annealing apparatus and method
US2634694A (en) * 1948-08-18 1953-04-14 Detrick M H Co Suspended arch tile structure
US3045616A (en) * 1959-12-30 1962-07-24 United States Steel Corp Suspended refractory roof
US3240173A (en) * 1963-07-01 1966-03-15 Chicago Fire Brick Co Cantilever structure for furnace roof
US3589316A (en) * 1969-07-18 1971-06-29 Levi S Longenecker Panelized suspended roof for reverberatory furnace
US3789780A (en) * 1972-12-29 1974-02-05 L Longenecker Suspended roof and end wall construction for reverberatory furnace
US4413572A (en) * 1983-03-07 1983-11-08 George P. Reintjes Company, Inc. Adjustable support assembly for open hearth furnace
US4474497A (en) * 1983-04-14 1984-10-02 Combustion Engineering, Inc. Furnace maintenance platform
US4493641A (en) * 1984-01-09 1985-01-15 Gladd Industries, Inc. Bake oven with manifold
US5062249A (en) * 1989-07-20 1991-11-05 Smagner John D Furnace crown means and method
US5357540A (en) * 1992-08-28 1994-10-18 Merkle Engineers Inc. High temperature industrial furnace roof structure
US6427610B1 (en) * 2000-10-11 2002-08-06 Merkle Engineers, Inc. High temperature industrial furnace roof structure
FR2834549B1 (fr) * 2002-01-09 2005-06-24 Ceric Perfectionnement aux plaques de cuisson en ceramique

Also Published As

Publication number Publication date
FR2906354B1 (fr) 2008-12-05
US20080076085A1 (en) 2008-03-27
ATE447152T1 (de) 2009-11-15
EP1906125A1 (de) 2008-04-02
US7950922B2 (en) 2011-05-31
DE602007002965D1 (de) 2009-12-10
FR2906354A1 (fr) 2008-03-28

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