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EP0227927A1 - Tunnel kiln with undercar cooling - Google Patents

Tunnel kiln with undercar cooling Download PDF

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Publication number
EP0227927A1
EP0227927A1 EP86115658A EP86115658A EP0227927A1 EP 0227927 A1 EP0227927 A1 EP 0227927A1 EP 86115658 A EP86115658 A EP 86115658A EP 86115658 A EP86115658 A EP 86115658A EP 0227927 A1 EP0227927 A1 EP 0227927A1
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EP
European Patent Office
Prior art keywords
kiln
tunnel
undercarriage
cooling
cars
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
EP86115658A
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German (de)
French (fr)
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EP0227927B1 (en
EP0227927B2 (en
Inventor
Hans Lingl
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Hans Lingl Anlagenbau und Verfahrenstechnik GmbH and Co KG
Original Assignee
Hans Lingl Anlagenbau und Verfahrenstechnik GmbH and Co KG
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Application filed by Hans Lingl Anlagenbau und Verfahrenstechnik GmbH and Co KG filed Critical Hans Lingl Anlagenbau und Verfahrenstechnik GmbH and Co KG
Priority to AT86115658T priority Critical patent/ATE40461T1/en
Publication of EP0227927A1 publication Critical patent/EP0227927A1/en
Publication of EP0227927B1 publication Critical patent/EP0227927B1/en
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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
    • F27B9/14—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

Definitions

  • the invention relates to a method for cooling undercarriage of kiln cars in a tunnel kiln according to the preamble of method claim 1.
  • the invention further relates to a tunnel kiln for carrying out the method with a furnace channel formed by the kiln cars running closely on the side walls of the tunnel above the kiln car and one below the kiln car Undercarriage channel and with aprons arranged on the open carriages and moving in the direction of the foundation
  • the undercarriage duct formed by the kiln cars, the foundation and the side walls of a tunnel kiln must be cooled in order to dissipate the heat flowing through the car forming the sole of the combustion channel in order to prevent overheating, e.g. the kiln car wheels to prevent.
  • the undercarriage duct is usually cooled with air that is drawn through the undercarriage duct from the exit to the entry side of the furnace.
  • the combustion channel of the tunnel kiln is also flushed with gases in the same direction, so that a pressure drop arises in both channels from the exit to the entry side, which, however, is different due to the different resistances, so that false air flows between the channels, which is taken by suitable measures should be prevented.
  • the usual form of tunnel kiln construction in the ceramic industry to seal the wagon train is to provide aprons on the long sides of the wagons, which plunge into sand channels, in the base of the side walls of the kiln, so that closed barriers along the length of the kiln formed by the sand arise, which should prevent pressure equalization between the undercarriage duct and the combustion duct.
  • the car joints are sealed with cords made of elastic material (see Lingl brochure sheet F 045 / 3.7.82).
  • the disadvantage here is that the sand skirts can only have a relatively small immersion depth for structural and cost reasons, but that the sand, which - in order not to be removed - must be relatively coarse, is gas-permeable, so that the seal is only defective.
  • a kiln car sealing system in which the kiln cars are designed as a downwardly open box with all-round sheet metal aprons, the car train running in a liquid bath, so that a continuous hydraulic seal is created under the kiln car train, whereby the liquid is circulated for cooling.
  • a disadvantage of this system are the branching and lifting devices required at the furnace entrance and exit in order to lower or lift the furnace wagons into the tub filled with liquid.
  • Another disadvantage is the lack of gradation of the cooling capacity of the liquid in the continuous trough, so that e.g. in the heating zone of the furnace, where undercarriage cooling is neither necessary nor practical, heat is also removed from the combustion duct.
  • the object of the invention is to provide an undercarriage cooling of kiln cars in a tunnel kiln which enables the undercarriage to be cooled locally and in terms of intensity with the least possible amount of false air for the combustion duct and possibly heat recovery.
  • the advantages that can be achieved with the invention are, in particular, that the pressure drop between the combustion duct and the undercarriage duct is reduced, so that false air is largely avoided. They also consist in the fact that the undercarriage channel is divided into sections which can be cooled differently with heat recovery, via the cooling devices designed as heat exchangers.
  • the undercarriage sealing system created by the subdivision of the undercarriage channel into sections avoids a pressure drop in the longitudinal channel direction and avoids a pressure drop between the undercarriage channel and the combustion channel, so that there is no need for sand channels or similar sealants.
  • a section-by-section cooling of the undercarriage channel with different intensity is made possible.
  • the kiln cars can be transported inside and outside the tunnel kiln on the same level, so that the car circulation can be designed with conventional means and existing systems can be converted with the design according to the invention.
  • the wagon train 2 consisting of the kiln car 1 is tightly closed and track-bound, pushed through the tunnel kiln 3 and forms the lower end of the combustion duct 4, which runs through the wagon train 2 to the undercarriage duct 5 is separated.
  • the kiln cars 1 are provided at their ends with aprons 6, which seal against the oven walls 7 at a short distance.
  • the furnace foundation 8 is formed as a trough with partitions 9 at a distance A from one another which corresponds to the furnace advance or a multiple of the carriage advance when the furnace is pushed intermittently, the support walls 9 being raised to the level of the track head, so that at most a small distance between the apron 6 and partition 9 arises or the aprons 6 abut sealingly on the partitions 9.
  • the kiln car tracks 10 are supported with supports 11 for bridging the resulting chambers 12, in which cooling tubes 13 are arranged directly under the supports 11 in such a way that a natural circulation of the air in the chambers 12 occurs, which in sections is in chamber length or a multiple thereof Chamber length can be controlled in intensity.
  • Pressure compensation can take place between the combustion duct 4 and the undercarriage duct 5 in the absence of a gas seal.
  • the undercarriage duct 5 neither air is supplied nor discharged, so that the small remaining gap between the aprons 6 and the furnace walls 7 or partition walls 9 in the foundation there does not allow any significant longitudinal flow.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Tunnel Furnaces (AREA)
  • Processing Of Solid Wastes (AREA)
  • Furnace Details (AREA)

Abstract

Transverse sub-chambers are defined beneath a train of kiln cars. Pressure equalization is permitted with respect to the firing chamber thereabove but very little air will actually pass therebetween because there is no other substantial air passageway leading into or out of the sub-chamber. Rather, heat exchange cooling apparatus is employed in each sub-chamber so as to set up convention air currents within the sub-chamber to cool the underside of the kiln car. The heat exchanger units in different sub-chambers are preferably individually controllable so as to provide a controllable degree of undercar cooling as a function of location along the tunnel kiln.

Description

Die Erfindung betrifft ein Verfahren zur Unterwagenkühlung von Ofenwagen in einem Tunnelofen nach dem Oberbegriff des Verfahrensanspruchs 1. Die Erfindung betrifft ferner einen Tunnelofen zur Durchführung des Verfahrens mit einem durch die eng an den Tunneiseitenwänden laufenden Ofenwagen oberhalb der Ofenwagen gebildeten Brennkanal und einem unterhalb der Ofenwagen liegenden Unterwagenkanal und mit an den Offenwagen angeordneten, in Richtung des Fundamentes regenden SchürzenThe invention relates to a method for cooling undercarriage of kiln cars in a tunnel kiln according to the preamble of method claim 1. The invention further relates to a tunnel kiln for carrying out the method with a furnace channel formed by the kiln cars running closely on the side walls of the tunnel above the kiln car and one below the kiln car Undercarriage channel and with aprons arranged on the open carriages and moving in the direction of the foundation

Der durch die Ofenwagen, das Fundament und die Seitenwände eines Tunnelofens gebildete Unterwagenkanal muß gekühlt werden, um die die Sohle des Brennkanals bildenden Wagen durchströmende Wärme abzuführen, um ein Überhitzen, z.B. der Ofenwagenräder, zu verhindern. Das Kühlen des Unterwagenkanals erfolgt in der Regel mit Luft, die von der Ausfahrt-zur Einfahrtseite des Ofens hin durch des Unterwagenkanal gezogen wird. Der Brennkanal des Tunnelofens wird ebenfalls in gleicher Richtung von Gasen durchspült, so daß in beiden Kanälen von der Ausfahrt-zur Einfahrtseite hin ein Druckgefälle entsteht, das jedoch wegen der unterschiedlichen Widerstände unterschiedlich ist, so daß zwischen den Kanälen Falschluft strömt, was durch geeignete Maßnahmen verhindert werden soll.The undercarriage duct formed by the kiln cars, the foundation and the side walls of a tunnel kiln must be cooled in order to dissipate the heat flowing through the car forming the sole of the combustion channel in order to prevent overheating, e.g. the kiln car wheels to prevent. The undercarriage duct is usually cooled with air that is drawn through the undercarriage duct from the exit to the entry side of the furnace. The combustion channel of the tunnel kiln is also flushed with gases in the same direction, so that a pressure drop arises in both channels from the exit to the entry side, which, however, is different due to the different resistances, so that false air flows between the channels, which is taken by suitable measures should be prevented.

Die beim Tunnelofenbau in der keramischen Industrie gebräuchliche Form, den Wagenzug zu dichten, ist, an den Längsseiten der Wagen Schürzen vorzusehen, die in Sandrinnen, im Fußsockel der Seitenwände des Ofens eintauchen, so daß durch den Sand gebildete geschlossene Barrieren in der Länge des Ofens entstehen, die den Druckausgleich zwischen Unterwagenkanal und Brennkanal verhindern sollen. Die Wagenstöße werden mit Schnüren aus elastischem Material gedichtet (siehe Lingl-Prospektblatt F 045/3.7.82). Nachteilig ist hierbei jedoch, daß die Sandschürzen aus baulichen und Kostengründen nur eine relativ geringe Eintauchtiefe haben können, daß der Sand aber, der -um nicht fortgezogen zu werden -relativ grob sein muß, gasdurchlässig ist, so daß die Dichtung nur mangelhaft ist.The usual form of tunnel kiln construction in the ceramic industry to seal the wagon train is to provide aprons on the long sides of the wagons, which plunge into sand channels, in the base of the side walls of the kiln, so that closed barriers along the length of the kiln formed by the sand arise, which should prevent pressure equalization between the undercarriage duct and the combustion duct. The car joints are sealed with cords made of elastic material (see Lingl brochure sheet F 045 / 3.7.82). The disadvantage here, however, is that the sand skirts can only have a relatively small immersion depth for structural and cost reasons, but that the sand, which - in order not to be removed - must be relatively coarse, is gas-permeable, so that the seal is only defective.

Aus der EP-OS 0 086 693 ist ein Ofenwagendichsystem bekannt, bei dem die Ofenwagen als nach unten offener Kasten mit rundumlaufenden Blechschürzen ausgebildet sind, wobei der Wagenzug in einem Flüssigkeitsbad läuft, so daß einer durchgehende hydraulische Dichtung unter dem Ofenwagenzug entsteht, wobei die Flüssigkeit zur Kühlung umgewälzt wird. Nachteilig bei diesem System sind jedoch die an der Ofenein-und -ausfahrt erforderlichen Niederlaß-und Hubgeräte, um die Ofenwagen in die mit Flüssigkeit gefüllte Wanne abzusenken oder herauszuheben. Nachteilig ist auch die mangelnde Abstufung der Kühlleistung der Flüssigkeit in der durchgehenden Wanne, so daß z.B. in der Aufheizzone des Ofens, wo eine Unterwagenkühlung weder notwendig, noch zweckmäßig ist, ebenfalls Wärme aus dem Brennkanal abgeführt wird.From EP-OS 0 086 693 a kiln car sealing system is known, in which the kiln cars are designed as a downwardly open box with all-round sheet metal aprons, the car train running in a liquid bath, so that a continuous hydraulic seal is created under the kiln car train, whereby the liquid is circulated for cooling. A disadvantage of this system, however, are the branching and lifting devices required at the furnace entrance and exit in order to lower or lift the furnace wagons into the tub filled with liquid. Another disadvantage is the lack of gradation of the cooling capacity of the liquid in the continuous trough, so that e.g. in the heating zone of the furnace, where undercarriage cooling is neither necessary nor practical, heat is also removed from the combustion duct.

Aufgabe der Erfindung ist es, eine Unterwagenkühlung von Ofenwagen in einem Tunnelofen zu schaffen, die eine örtlich und in der Intensität unterschiedliche Kühlung der Unterwagen ermöglicht mit geringstmöglicher Falschluft für den Brennkanal und gegebenenfalls Wärmerückgewinnung.The object of the invention is to provide an undercarriage cooling of kiln cars in a tunnel kiln which enables the undercarriage to be cooled locally and in terms of intensity with the least possible amount of false air for the combustion duct and possibly heat recovery.

Diese Aufgabe wird durch das Verfahren nach Patentanspruch 1 gelöst. Ein zweckmäßiger Tunnelofen zur Durchführung des Verfahrens ist in den Ansprüchen 2 bis 6 gekennzeichnet.This object is achieved by the method according to claim 1. An expedient tunnel kiln for carrying out the method is characterized in claims 2 to 6.

Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, daß das Druckgefälle zwischen Brennkanal und Unterwagenkanal abgebaut wird, so daß Falschluft weitestgehend vermieden wird. Sie bestehen weiterhin darin, daß der Unterwagenkanal in Abschnitte unterteilt ist, die unterschiedlich gekühlt werden können mit Wärmerückgewinnung, über die als Wärmeaustauscher ausgebildeten Kühleinrichtungen. Das durch die Unterteilung des Unterwagenkanals in Abschnitte geschaffene Unterwagen-Dichtsystem vermeidet ein Druckgefälle in Kanallängsrichtung und vermeidet ein Druckgefälle zwischen Unterwagenkanal und Brennkanal, so daß sich Sandrinnen oder ähnliche Dichtmittel erübrigen. Eine Abschnittsweise, in der Intensität unterschiedliche Kühlung des Unterwagenkanals ist ermöglicht. Die Ofenwagen können inner-und außerhalb des Tunnelofens in gleicher Ebene transportiert werden, so daß der Wagenumlauf mit konventionallen Mitteln gestaltet werden kann und auch bestehende Anlagen mit der erfindungsgemäßen Gestaltung umrüstbar sind.The advantages that can be achieved with the invention are, in particular, that the pressure drop between the combustion duct and the undercarriage duct is reduced, so that false air is largely avoided. They also consist in the fact that the undercarriage channel is divided into sections which can be cooled differently with heat recovery, via the cooling devices designed as heat exchangers. The undercarriage sealing system created by the subdivision of the undercarriage channel into sections avoids a pressure drop in the longitudinal channel direction and avoids a pressure drop between the undercarriage channel and the combustion channel, so that there is no need for sand channels or similar sealants. A section-by-section cooling of the undercarriage channel with different intensity is made possible. The kiln cars can be transported inside and outside the tunnel kiln on the same level, so that the car circulation can be designed with conventional means and existing systems can be converted with the design according to the invention.

Eine beispielsweise Ausführungsform eines Tunnelofens nach der Erfindung wird im folgenden anhand der Zeichnungen näher beschrieben. Es zeigen

  • Fig. 1 schematisch eine Querschnittsansicht eines Tunnelofens,
  • Fig. 2 schematisch einen Längsschnitt durch den Tunnelofen mit Ofenwagenzug.
An example embodiment of a tunnel furnace according to the invention is described in more detail below with reference to the drawings. Show it
  • 1 schematically shows a cross-sectional view of a tunnel furnace,
  • Fig. 2 shows schematically a longitudinal section through the tunnel kiln with kiln car train.

Der aus dem Ofenwagen 1 bestehende Wagenzug 2 wird dicht geschlossen und gleisgebunden durch den Tunnelofen 3 geschoben und bildet den unteren Abschluß des Brennkanals 4, der durch den Wagenzug 2 zum Unterwagenkanal 5 getrennt ist. Die Ofenwagen 1 sind an ihren Enden mit Schürzen 6 versehen, die gegen die Ofenwände 7 in geringem Abstand geführt dichten. Eine Kragschicht 15 an den Seiten der Ofenwagen 1 aus weichen Isoliersteinen, in geringem Abstand zu einer Kragschicht 14 an den Ofenwänden 7, ist als Strahlungsbarriere vorgesehen. Das Ofenfundament 8 ist als Wanne augebildet mit Trennwänden 9 in einem Abstand A zueinander, der dem Ofenvorschub bzw. einem Vielfachen des Wagenvorschubs beim intermittierend geschobenen Ofen entspricht, wobei die Stützwände 9 bis auf Gleiskopfhöhe hochgezogen sind, so daß allenfalls ein geringer Abstand zwischen Schürze 6 und Trennwand 9 entsteht bzw. die Schürzen 6 an den Trennwänden 9 dichtend anliegen. Die Ofenwagengleise 10 werden mit Trägern 11 zur Überbrückung der so entstandenen Kammern 12 gestützt, in denen Kühlrohre 13 direkt unter den Trägern 11 so angeordnet sind, daß eine natürliche Umwälzung der Luft in den Kammern 12 entsteht, die dabei abschnittsweise in Kammerlänge oder einem Vielfachen der Kammerlänge in der Intensität gesteuert werden kann.The wagon train 2 consisting of the kiln car 1 is tightly closed and track-bound, pushed through the tunnel kiln 3 and forms the lower end of the combustion duct 4, which runs through the wagon train 2 to the undercarriage duct 5 is separated. The kiln cars 1 are provided at their ends with aprons 6, which seal against the oven walls 7 at a short distance. A cantilever layer 15 on the sides of the kiln car 1 made of soft insulating stones, at a short distance from a cantilever layer 14 on the furnace walls 7, is provided as a radiation barrier. The furnace foundation 8 is formed as a trough with partitions 9 at a distance A from one another which corresponds to the furnace advance or a multiple of the carriage advance when the furnace is pushed intermittently, the support walls 9 being raised to the level of the track head, so that at most a small distance between the apron 6 and partition 9 arises or the aprons 6 abut sealingly on the partitions 9. The kiln car tracks 10 are supported with supports 11 for bridging the resulting chambers 12, in which cooling tubes 13 are arranged directly under the supports 11 in such a way that a natural circulation of the air in the chambers 12 occurs, which in sections is in chamber length or a multiple thereof Chamber length can be controlled in intensity.

Zwischen Brennkanal 4 und Unterwagenkanal 5 kann mangels einer Gasdichtung ein Druckausgleich erfolgen. Im Unterwagenkanal 5 wird weder Luft zu-noch abgeführt, so daß der geringe verbleibende Spalt zwischen Schürzen 6 und Ofenwänden 7 bzw. Trennwänden 9 im Fundament dort keine nennenswerte Längströmung zuläßt.Pressure compensation can take place between the combustion duct 4 and the undercarriage duct 5 in the absence of a gas seal. In the undercarriage duct 5, neither air is supplied nor discharged, so that the small remaining gap between the aprons 6 and the furnace walls 7 or partition walls 9 in the foundation there does not allow any significant longitudinal flow.

Claims (6)

1. Verfahren zur Unterwagenkühlung von Ofenwagen in einem Tunnelofen mit Hilfe von Luft, dadurch gekennzeichnet, daß ein Druckausgleich zwischen dem durch Fundament, Seitenwände des Tunnelofens und den Ofenwagenunterteilen gebildeten Unterwagenkanal und dem oberhalb der Ofenwagen gebildeten Brennkanal zugelassen wird und der Unterwagenkanal quer zur Tunnelofenlängsrichtung bzw. zur Wagenvorschubsrichtung in Abschnitte unterteilt wird, in denen jeweils durch eine Kühleinrichtung eine die Unterseiten der Ofenwagen kühlende Konvektionsströmung erzeugt wird, deren Intensität und damit Kühlwirkung durch Steuerung der Kühleinrichtung in jedem Abschnitt eingestellt wird.1. A method for cooling the undercarriage of kiln cars in a tunnel kiln with the aid of air, characterized in that pressure equalization between the undercarriage channel formed by the foundation, side walls of the tunnel kiln and the kiln car lower parts and the combustion channel formed above the kiln car is permitted and the undercarriage channel is transverse to the longitudinal direction of the tunnel kiln or is divided into sections for the carriage feed direction, in each of which a cooling device generates a convection flow that cools the undersides of the kiln cars, the intensity and thus cooling effect of which is set by controlling the cooling device in each section. 2. Tunnelofen mit als Zug durchfahrbaren Ofenwagen zur Durchführung des Verfahrens nach Anspruch 1 mit einem durch die eng an den Tunnel-Seitenwänden laufenden Ofenwagen oberhalb der Ofenwagen gebildeten Brennkanal und einem unterhalb der Ofenwagen liegendem Unterwagenkanal und mit an den Ofenwagen angeordneten, in Richtung des Fundamentes ragenden Schürzen, dadurch gekennzeichnet, daß die Schürzen (6) nur an der Stirnseite mindestens eines der benachbarten Ofenwagen (1), gegen die Ofenwände (7) schleifend und mit allenfalls geringem Abstand zur Fundamentplatte (8) des Ofens - (3) herabreichend, angebracht sind und die Abschnitte des Unterwagenkanals in Ofenwagenlänge bilden und daß im Bereich der Fundamentplatte - (8) als Kühleinrichtungen Kühlrohre (13) angeordnet sind.2. Tunnel kiln with kiln cars that can be driven through as a train for carrying out the method according to claim 1 with a firing channel formed by the kiln cars running closely on the tunnel side walls above the kiln cars and an undercarriage channel lying below the kiln cars and with the kiln cars arranged in the direction of the foundation protruding aprons, characterized in that the aprons (6) only on the end face of at least one of the adjacent kiln cars (1), grinding against the kiln walls (7) and at most a short distance from the foundation plate (8) of the kiln - (3), are attached and form the sections of the undercarriage duct in the length of the kiln and that cooling pipes (13) are arranged in the region of the foundation plate - (8) as cooling devices. 3. Tunnelofen nach Anspruch 2, dadurch gekennzeichnet, daß das Fundament als Wanne ausgebildet ist, die durch die Trennwände (9) in einem Abstand (A), der dem Wagenvorschub bzw. dem Vielfachen des Wagenvorschubes beim untermittierend beschicktem Ofen entspricht, in Einzelwannen unterteilt ist, wobei in den Einzelwannen jeweils getrennt gesteuert speisbare Kühlrohre angeordnet sind.3. Tunnel furnace according to claim 2, characterized in that the foundation is designed as a trough which is divided into individual troughs by the partition walls (9) at a distance (A) which corresponds to the carriage advance or a multiple of the carriage advance in the intermittently charged furnace is, wherein separately controllable feed pipes are arranged in the individual tubs. 4. Tunnelofen nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Trennwände (9) bis auf Gieiskopfhöhe hochgezogen sind und die Schürzen (6) an die Trennwände (9) eng anstoßen.4. Tunnel furnace according to claim 2 or 3, characterized in that the partitions (9) are pulled up to the casting head height and the aprons (6) on the partitions (9) closely abut. 5. Tunnelofen nach den Ansprüchen 2 bis 4, dadurch gekennzeichnet, daß zwischen den Längsseiten der Ofenwagen (1) und den Ofenwänden (7) eine einen Druckausgleich zwischen Brennkanal (4) und Unterwagenkanal (5) zulassende Strahlungsbarriere (14, 15) vorgesehen ist.5. Tunnel furnace according to claims 2 to 4, characterized in that between the longitudinal sides of the furnace car (1) and the furnace walls (7) a pressure compensation between the combustion channel (4) and undercarriage channel (5) allowing radiation barrier (14, 15) is provided . 6. Tunnelofen nach Anspruch 5, dadurch gekennzeichnet, daß die Strahlungsbarriere aus wenigstens einer Kragschicht (15) aus weichen Isoliersteinen an den Längsseiten der Ofenwagen (1) - und aus wenigstens einer ebensolchen Kragschicht (14) an den Ofenwänden (7) besteht, wobei beide Kragschichten (14, 15) einen geringen Abstand zueinander haben.6. Tunnel furnace according to claim 5, characterized in that the radiation barrier consists of at least one cantilever layer (15) made of soft insulating stones on the long sides of the kiln car (1) - and at least one such cantilever layer (14) on the furnace walls (7), wherein both cantilever layers (14, 15) have a small distance from one another.
EP86115658A 1985-11-19 1986-11-11 Tunnel kiln with undercar cooling Expired - Lifetime EP0227927B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86115658T ATE40461T1 (en) 1985-11-19 1986-11-11 METHOD AND DEVICE FOR UNDERCARRIAGE COOLING OF FURNACE CARS IN TUNNEL FURNACES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3541015A DE3541015C1 (en) 1985-11-19 1985-11-19 Method and device for cooling undercarriage of kiln cars in tunnel kilns
DE3541015 1985-11-19

Publications (3)

Publication Number Publication Date
EP0227927A1 true EP0227927A1 (en) 1987-07-08
EP0227927B1 EP0227927B1 (en) 1989-01-25
EP0227927B2 EP0227927B2 (en) 1992-11-19

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EP86115658A Expired - Lifetime EP0227927B2 (en) 1985-11-19 1986-11-11 Tunnel kiln with undercar cooling

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US (1) US4722682A (en)
EP (1) EP0227927B2 (en)
AT (1) ATE40461T1 (en)
AU (1) AU579267B2 (en)
DE (1) DE3541015C1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
ES2031106T3 (en) * 1987-11-02 1992-12-01 Vogel & Noot Industrieanlagenbau Gesellschaft M.B.H. DEVICE FOR THE REFRIGERATION OF LOWER CHASSIS OF OVEN WAGONS IN OVENS-TUNNEL.
DE9103904U1 (en) * 1991-03-30 1992-07-30 Keller GmbH, 4530 Ibbenbüren Steel shell tunnel furnace
US7950921B1 (en) 2007-07-20 2011-05-31 Solution Dynamics, Llc Method and apparatus for cooling the underside of kiln cars
ITRE20080091A1 (en) * 2008-09-30 2010-04-01 Sacmi Forni Spa '' COOLING SYSTEM FOR CERAMIC PRODUCTS COOKING OVEN ''

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US1867318A (en) * 1930-02-26 1932-07-12 Walter A Hull Tunnel kiln
EP0086693A1 (en) * 1982-02-12 1983-08-24 ENTREPRISE HARTMANN PERE & FILS Sealing device for a tunnel oven, wagon and tunnel oven for this sealing device

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US2191438A (en) * 1939-03-21 1940-02-27 Walter R Breeler Furnace
US4069010A (en) * 1976-06-16 1978-01-17 Hendryx Engineers Incorporated Kiln for ceramic products
AU7092981A (en) * 1980-05-30 1981-12-03 Elektro-Dahlen A.B. Baking oven and cart with rotating surfaces
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US4560350A (en) * 1984-03-29 1985-12-24 Resco Products, Inc. End block
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

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1867318A (en) * 1930-02-26 1932-07-12 Walter A Hull Tunnel kiln
EP0086693A1 (en) * 1982-02-12 1983-08-24 ENTREPRISE HARTMANN PERE & FILS Sealing device for a tunnel oven, wagon and tunnel oven for this sealing device

Also Published As

Publication number Publication date
AU579267B2 (en) 1988-11-17
ATE40461T1 (en) 1989-02-15
EP0227927B1 (en) 1989-01-25
DE3541015C1 (en) 1986-09-11
EP0227927B2 (en) 1992-11-19
US4722682A (en) 1988-02-02
AU6551486A (en) 1987-05-21

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