DE3717356C1 - Tunnel furnace for baking shaped ceramic products - Google Patents

Tunnel furnace for baking shaped ceramic products

Info

Publication number
DE3717356C1
DE3717356C1 DE3717356A DE3717356A DE3717356C1 DE 3717356 C1 DE3717356 C1 DE 3717356C1 DE 3717356 A DE3717356 A DE 3717356A DE 3717356 A DE3717356 A DE 3717356A DE 3717356 C1 DE3717356 C1 DE 3717356C1
Authority
DE
Germany
Prior art keywords
cooling
kiln
furnace
side walls
tunnel
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 - Lifetime
Application number
DE3717356A
Other languages
German (de)
Inventor
Gregor Buschermoehle
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.)
Keller HCW GmbH
Original Assignee
Keller Ofenbau 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 Keller Ofenbau GmbH filed Critical Keller Ofenbau GmbH
Priority to DE3717356A priority Critical patent/DE3717356C1/en
Application granted granted Critical
Publication of DE3717356C1 publication Critical patent/DE3717356C1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/26—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace on or in trucks, sleds, or containers
    • F27B9/262—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace on or in trucks, sleds, or containers on or in trucks
    • 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
    • F27D9/00—Cooling of furnaces or of charges therein

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Tunnel Furnaces (AREA)

Abstract

In a tunnel furnace for baking shaped ceramic products, an under-waggon cooling system is provided for the furnace waggons running through the tunnel furnace. The under-waggon cooling system is active in an under-waggon duct formed by foundation bottom, furnace walls and steel frame of the furnace waggons, an air flow cooling the steel frames. Moreover, cooling ducts, running longitudinally in the under-waggon duct on both sides of the wheels carrying the furnace wagons, are arranged on the foundation bottom, the cooling ducts being subdivided into individually controllable air ducts. The side walls, of the cooling ducts, lying close to the wheels consist in each case of a metal sheet with a high degree of conductivity. The cooling ducts are also arranged in the region of the side walls between foundation bottom and side walls.

Description

Die Erfindung bezieht sich auf einen Tunnelofen zum Brennen von keramischen Formlingen nach dem Oberbegriff des Anspruchs 1.The invention relates to a tunnel kiln for burning Ceramic moldings according to the preamble of claim 1.

Ein Tunnelofen dieser Art ist aus der DE-PS 36 04 501 bekannt. Hier wird die Unterwagenkühlung durch an den Ofenwagen angeordneten, in Richtung des Fundamentbodens ragenden Schürzen, die an der Stirn­ seite der Ofenwagen gegen die Ofenwände schleifend und mit einem geringen Abstand zum Boden des Fundamentes des Tunnelofens herab­ reichend angebracht sind und dabei Abschnitte des Unterwagenkanals in Ofenwagenlänge bilden, erreicht. Weiterhin ist im Kühlbereich des Tunnelofens der Fundamentboden, einen vertieften Unterwagenkanal in Form einer Wanne unterhalb des Bereichs der Schürzen bildend, abgesenkt und in dem vertieften Unterwagenkanal ist eine die Unter­ seiten der Ofenwagen beaufschlagende Kühleinrichtung angeordnet.A tunnel kiln of this type is known from DE-PS 36 04 501. Here the undercarriage cooling is arranged on the kiln car, Aprons protruding towards the base of the foundation on the forehead side of the kiln car grinding against the kiln walls and with one close to the bottom of the foundation of the tunnel furnace are adequately attached and sections of the undercarriage channel in kiln car length, reached. Furthermore is in the cooling area the foundation floor of the tunnel kiln, a recessed undercarriage channel in the form of a tub below the apron area, lowered and in the recessed undercarriage channel is the lower arranged on the side of the kiln car cooling device.

Damit diese bekannte Unterwagenkühlung wirksam werden kann, ist es erforderlich, daß die Ofenwagen mit Schürzen versehen werden müssen. Der Arbeits- und der Materialaufwand sind deshalb außerordentlich groß. Außerdem ist es nicht möglich, bestimmte Stellen der Unterwagen­ teile der Ofenwagen dort besonders zu kühlen, z.B. im Bereich der Räder, notwendig ist.So that this known undercarriage cooling can take effect, it is required that the kiln cars must be provided with aprons. The labor and material costs are therefore extraordinary large. It is also not possible to locate certain parts of the undercarriage to particularly cool parts of the kiln car there, e.g. in the field of Wheels, is necessary.

Der Erfindung liegt die Aufgabe zugrunde, einen Tunnelofen nach dem Oberbegriff des Anspruchs 1 derart weiterzubilden, so daß die Unter­ wagenkühlung auch ohne Anordnung von bis zum Fundamentboden reichende, am Ofenwagen anzuordnende Schürzen wirksam ist und daß die Unterwagen­ kühlung je nach Temperaturanfall in den Stahlgestellen des Ofenwagens steuerbar ist.The invention has for its object a tunnel kiln after Develop the preamble of claim 1 so that the sub wagon cooling even without arrangement of reaching to the foundation floor aprons to be arranged on the kiln car is effective and that the undercarriage cooling depending on the temperature rise in the steel frames of the kiln car is controllable.

Diese Aufgabe wird erfindungsgemäß durch den kennzeichnenden Teil des Anspruchs 1 gelöst. Weitere Ausgestaltungen der Erfindung sind den Unteransprüchen zu entnehmen.This object is achieved by the characterizing part of claim 1 solved. Further refinements of the invention are can be found in the subclaims.

Da die Ofenwagen ohne bis zum Fundamentboden reichende Schürzen ver­ wendet werden, ist der Aufwand geringer gehalten. Since the kiln cars have no aprons reaching to the foundation floor the effort is kept to a minimum.  

Durch die indirekte Kühlung des gesamten Tunnelofens werden die Stahlgestelle der Ofenwagen von der Einfahrt in den Ofen bis zur Ausfahrt aus dem Ofen derart kühl gehalten, daß Beschädigungen an den Ofenwagen nicht auftreten.The indirect cooling of the entire tunnel furnace means that Steel frames of the kiln cars from the entrance to the kiln Exit from the oven kept so cool that damage to the Kiln car does not occur.

Da die Kühlkanäle auch im Bereich der Ofenwände angeordnet sein können, wird eine Wärmeableitung zum Begehkanal und zum Fundament­ boden unterbunden.Since the cooling channels are also arranged in the area of the furnace walls heat dissipation to the walkway and the foundation floor prevented.

Da die Kühlkanäle in einzelne Luftkanäle unterteilt sind, kann die Kühlung dort intensiver betrieben werden, wo dies erforderlich ist, um z.B. die Räder besonders vor Hitze zu schützen.Since the cooling channels are divided into individual air channels, the Cooling can be operated more intensively where necessary to e.g. protect the wheels from heat.

Es ist auch möglich, in die durch die Anordnung der Kühlkanäle ge­ bildeten Kanäle, die die Räder der Ofenwagen aufnehmen, und zwar in die sogenannten Radkanäle Kühlluft einzuleiten, um die besonders empfindlichen Radlager kühl zu halten.It is also possible in the ge by the arrangement of the cooling channels formed channels that accommodate the wheels of the kiln cars in to introduce the so-called wheel ducts cooling air to the particularly to keep sensitive wheel bearings cool.

Die schematische Zeichnung stellt ein Ausführungsbeispiel des Er­ findungsgegenstandes im Querschnitt durch den Tunnelofen dar.The schematic drawing represents an embodiment of the Er in cross-section through the tunnel furnace.

Im Tunnelofen (1), der aus einem Fundamentboden (2), Ofenwänden (3, 4) und einer Decke (5) gebildet ist, werden die Ofenwagen (6) hindurch­ geführt, die die zu brennenden keramischen Formlinge tragen.In the tunnel kiln ( 1 ), which is formed from a foundation floor ( 2 ), kiln walls ( 3 , 4 ) and a ceiling ( 5 ), the kiln cars ( 6 ) are carried, which carry the ceramic moldings to be burned.

Der Ofenwagen (6) besteht aus einem Wagenaufbau, einem die Unter­ wagenteile enthaltenden Stahlgestell (8), den am Stahlgestell (8) an­ geordneten Rädern (9, 10) und einem am Stahlgestell (8) angeordneten Mitnehmer (11) zum Angriff einer für den Transport der Ofenwagen durch den Tunnelofen (1) erforderliche Einschubmaschine (nicht dargestellt).The kiln car ( 6 ) consists of a car body, a steel frame ( 8 ) containing the under car parts, the steel frame ( 8 ) on ordered wheels ( 9 , 10 ) and a steel frame ( 8 ) arranged driver ( 11 ) for attacking a the transport of the kiln cars through the tunnel kiln ( 1 ) required plug-in machine (not shown).

Die Ofenwagen (6) teilen den Innenraum des Tunnelofens (1) in einen ober­ halb der Ofenwagen (6) gelegenen Brennkanal (12) und einen unterhalb der Stahlgestelle (8) befindlichen Unterwagenkanal (13).The kiln car ( 6 ) divide the interior of the tunnel kiln ( 1 ) into an upper half of the kiln car ( 6 ) located combustion channel ( 12 ) and a below the steel frame ( 8 ) located undercarriage channel ( 13 ).

Im Unterwagenkanal (13) sind beidseitig der Räder (9, 10) längs des Tun­ nelofens (1) verlaufende Kühlkanäle (14, 15, 16) auf dem Fundament­ boden (2) angeordnet, in denen Kühlluft längs der Stahlgestelle (8) transportiert wird, die die Stahlgestelle (8) und die Räder (9, 10) indirekt über die gesamte Tunnelofenlänge kühlt.In the undercarriage duct ( 13 ) on both sides of the wheels ( 9 , 10 ) along the Tun nelofens ( 1 ) extending cooling ducts ( 14 , 15 , 16 ) are arranged on the foundation floor ( 2 ), in which cooling air is transported along the steel frames ( 8 ) , which cools the steel frames ( 8 ) and the wheels ( 9 , 10 ) indirectly over the entire length of the tunnel furnace.

Die beiden seitlichen Kühlkanäle (14, 16), die auch die Seitenwände (3, 4) untergreifen können, reichen bis zur Unterseite der Stahl­ gestelle (8), während der mittlere Kühlkanal (15) bis zum Mitneh­ mer (11) reicht.The two side cooling channels ( 14 , 16 ), which can also reach under the side walls ( 3 , 4 ), extend to the underside of the steel frames ( 8 ), while the middle cooling channel ( 15 ) extends to the driver ( 11 ).

Die Kühlkanäle (14, 15, 16) sind in einzelne Luftkanäle (17, 18, 19) un­ terteilt, wodurch sich die Möglichkeit ergibt, die Luftkanäle (17, 18, 19) jeweils gesondert zu steuern, indem in einem oder mehreren Luftkanälen kältere Luft als in den übrigen Luftkanälen transportiert wird, und zwar zu den Stellen, an denen eine höhere Temperatur herrscht. Es ist auch möglich, in den einzelnen Luftkanälen (17, 18, 19) die Strömungsgeschwindigkeit der Luft zu variieren.The cooling channels ( 14 , 15 , 16 ) are subdivided into individual air channels ( 17 , 18 , 19 ), which results in the possibility of controlling the air channels ( 17 , 18 , 19 ) separately in each case by adding colder air in one or more air channels Air is transported than in the other air ducts to the places where the temperature is higher. It is also possible to vary the flow velocity of the air in the individual air channels ( 17 , 18 , 19 ).

Die nahe der Räder (9, 10) liegenden Seitenwände (20, 21, 22, 23) der Kühlkanäle (14, 15, 16) können jeweils aus einem stark wärmeleitenden Blech bestehen, wodurch eine intensivere Kühlung besonders im Be­ reich der Räder (9, 10) eintritt.The near the wheels ( 9 , 10 ) lying side walls ( 20 , 21 , 22 , 23 ) of the cooling channels ( 14 , 15 , 16 ) can each consist of a highly heat-conductive sheet, whereby more intensive cooling especially in the loading area of the wheels ( 9 , 10 ) occurs.

Auch in die Radkanäle (24, 25) kann, wenn erforderlich, Kühlluft eingeleitet werden.If necessary, cooling air can also be introduced into the wheel ducts ( 24 , 25 ).

Claims (3)

1. Tunnelofen zum Brennen von keramischen Formlingen, mit einer Unter­ wagenkühlung von durch den Tunnelofen laufenden Ofenwagen, die in einem durch Fundamentboden, Ofenwände und Stahlgestell der Ofen­ wagen gebildeten Unterwagenkanal wirksam ist, indem eine Luft­ strömung die Stahlgestelle kühlt, dadurch gekennzeichnet, daß im Unterwagenkanal (13) beidseitig der die Ofenwagen (6) tra­ genden Räder (9, 10) längslaufende Kühlkanäle (14, 15, 16) auf dem Fundamentboden (2) angeordnet sind und daß die Kühlkanäle (14, 15, 16) in einzeln steuerbare Luftkanäle (17, 18, 19) unterteilt sind.1. tunnel kiln for firing ceramic moldings, with an undercarriage cooling of kiln cars running through the tunnel kiln, which is effective in an undercarriage channel formed by the foundation floor, kiln walls and steel frame of the kiln by an air flow cooling the steel frames, characterized in that in Undercarriage channel ( 13 ) on both sides of the kiln car ( 6 ) carrying wheels ( 9 , 10 ) longitudinal cooling channels ( 14 , 15 , 16 ) are arranged on the foundation floor ( 2 ) and that the cooling channels ( 14 , 15 , 16 ) in individually controllable Air channels ( 17 , 18 , 19 ) are divided. 2. Tunnelofen nach Anspruch 1, dadurch gekennzeichnet, daß die nahe der Räder (9, 10) der Ofenwagen (6) liegenden Seitenwände (20, 21, 22, 23) der Kühlkanäle (14, 15, 16) jeweils aus einem stark wärmeleitenden Blech bestehen.2. Tunnel furnace according to claim 1, characterized in that the near the wheels ( 9 , 10 ) of the kiln car ( 6 ) lying side walls ( 20 , 21 , 22 , 23 ) of the cooling channels ( 14 , 15 , 16 ) each have a highly heat-conducting Made of sheet metal. 3. Tunnelofen nach Anspruch 1, dadurch gekennzeichnet, daß die seitlich gelegenen Kühlkanäle (14, 16) auch im Bereich der Seitenwände (3, 4) zwischen Fundamentboden (2) und Seiten­ wände (3, 4) angeordnet sind.3. Tunnel furnace according to claim 1, characterized in that the laterally located cooling channels ( 14 , 16 ) in the region of the side walls ( 3 , 4 ) between the foundation floor ( 2 ) and side walls ( 3 , 4 ) are arranged.
DE3717356A 1987-05-22 1987-05-22 Tunnel furnace for baking shaped ceramic products Expired - Lifetime DE3717356C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE3717356A DE3717356C1 (en) 1987-05-22 1987-05-22 Tunnel furnace for baking shaped ceramic products

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3717356A DE3717356C1 (en) 1987-05-22 1987-05-22 Tunnel furnace for baking shaped ceramic products

Publications (1)

Publication Number Publication Date
DE3717356C1 true DE3717356C1 (en) 1988-09-22

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ID=6328221

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3717356A Expired - Lifetime DE3717356C1 (en) 1987-05-22 1987-05-22 Tunnel furnace for baking shaped ceramic products

Country Status (1)

Country Link
DE (1) DE3717356C1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9103904U1 (en) * 1991-03-30 1992-07-30 Keller GmbH, 4530 Ibbenbüren Steel shell tunnel furnace
EP0937958A1 (en) * 1998-02-12 1999-08-25 Keller GmbH Process and installation for cooling under the wagon and heat utilisation in a tunnel furnace

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1408351B1 (en) * 1958-02-28 1969-10-02 Aluminium Co Process for burning carbon electrodes in tunnel ovens
DE3604501C1 (en) * 1986-02-13 1993-01-14 Hans Lingl Anlagenbau Und Verfahrenstechnik Gmbh & Co Kg, 7910 Neu-Ulm Method and device for cooling undercarriage of kiln cars in a tunnel kiln

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1408351B1 (en) * 1958-02-28 1969-10-02 Aluminium Co Process for burning carbon electrodes in tunnel ovens
DE3604501C1 (en) * 1986-02-13 1993-01-14 Hans Lingl Anlagenbau Und Verfahrenstechnik Gmbh & Co Kg, 7910 Neu-Ulm Method and device for cooling undercarriage of kiln cars in a tunnel kiln

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9103904U1 (en) * 1991-03-30 1992-07-30 Keller GmbH, 4530 Ibbenbüren Steel shell tunnel furnace
EP0937958A1 (en) * 1998-02-12 1999-08-25 Keller GmbH Process and installation for cooling under the wagon and heat utilisation in a tunnel furnace

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Legal Events

Date Code Title Description
8100 Publication of the examined application without publication of unexamined application
D1 Grant (no unexamined application published) patent law 81
8363 Opposition against the patent
8366 Restricted maintained after opposition proceedings
8305 Restricted maintenance of patent after opposition
D3 Patent maintained restricted (no unexamined application published)
8380 Miscellaneous part iii

Free format text: SPALTE 2, ZEILE 44 "HOHLGESTELL" AENDERN IN "STAHLGESTELL"

8320 Willingness to grant licences declared (paragraph 23)
8327 Change in the person/name/address of the patent owner

Owner name: KELLER HCW GMBH, 49479 IBBENBUEREN, DE

8339 Ceased/non-payment of the annual fee