WO2010045664A2 - Heat exchanger for an annealing furnace for exchanging heat between two fluids - Google Patents

Heat exchanger for an annealing furnace for exchanging heat between two fluids Download PDF

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Publication number
WO2010045664A2
WO2010045664A2 PCT/AT2009/000391 AT2009000391W WO2010045664A2 WO 2010045664 A2 WO2010045664 A2 WO 2010045664A2 AT 2009000391 W AT2009000391 W AT 2009000391W WO 2010045664 A2 WO2010045664 A2 WO 2010045664A2
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WO
WIPO (PCT)
Prior art keywords
heat exchanger
profile
fluids
heat
profile tube
Prior art date
Application number
PCT/AT2009/000391
Other languages
German (de)
French (fr)
Other versions
WO2010045664A3 (en
Inventor
Peter Ebner
Andreas Sauschlager
Original Assignee
Ebner Industrieofenbau Gesellschaft M.B.H.
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 Ebner Industrieofenbau Gesellschaft M.B.H. filed Critical Ebner Industrieofenbau Gesellschaft M.B.H.
Priority to EP09740624.3A priority Critical patent/EP2342522B1/en
Priority to CN2009801417902A priority patent/CN102187173B/en
Priority to MX2011004231A priority patent/MX2011004231A/en
Priority to RU2011120166/06A priority patent/RU2493526C2/en
Priority to CA2741095A priority patent/CA2741095A1/en
Priority to JP2011532463A priority patent/JP2012506025A/en
Priority to US12/998,427 priority patent/US20110308780A1/en
Priority to BRPI0919799A priority patent/BRPI0919799A2/en
Publication of WO2010045664A2 publication Critical patent/WO2010045664A2/en
Priority to ZA2011/02683A priority patent/ZA201102683B/en
Publication of WO2010045664A3 publication Critical patent/WO2010045664A3/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
    • F28F1/16—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means being integral with the element, e.g. formed by extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/04—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of sheet metal
    • 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
    • F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
    • F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B5/14—Arrangements of heating devices
    • 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
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/004—Systems for reclaiming waste heat
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • F28D7/12—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically the surrounding tube being closed at one end, e.g. return type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor

Definitions

  • the invention relates to a heat exchanger for an annealing furnace for exchanging heat between two fluids having a tubular, on its outer shell heat exchanger ribs having profile on at least one end face a connection flange with at least one flow opening for one of the two fluids, in particular a hot gas heard.
  • both the heat treatment and the optionally necessary subsequent cooling takes place under a protective gas, usually nitrogen or hydrogen or a mixture of these gases.
  • a protective gas usually nitrogen or hydrogen or a mixture of these gases.
  • the heat supply or discharge is usually carried out over high-temperature resistant heat exchanger made of cast materials or ceramic.
  • These heat exchangers or recuperators are traversed by hot gases, in particular fuel gases or the like, wherein the hot gas gives off the heat to the heat exchanger and this in turn the heat over its outer cooling fins, for example, in a space or the like.
  • the invention has for its object to provide a heat exchanger for an annealing furnace, which is suitable for imaging highly dynamic temperature fluctuations, as may be required in particular during the heat treatment of Glühgut.
  • the profile is a profile tube made of a folded sheet metal, which are aligned in the profile tube longitudinal direction heat exchanger ribs from the corrugated profile, in particular of the wave flanks of the folded sheet.
  • a particularly simple and cost-effective way of producing a heat exchanger suitable for an annealing furnace which can realize particularly dynamic temperature fluctuations in the annealing furnace with a particularly low material usage and thus low weight just because of its lower internal heat storage capacity.
  • the fact that the profile is a profile tube made of folded sheet increases not only the cherries (2004), as is the case in the prior art, but also the heat exchanger inner surface, whereby the energy contained in the hot gas is better utilized on the one hand and on the other hand at compared to the prior art equal heat exchangers higher heat energy flows can be realized.
  • the invention is based on the advantage that now smaller and lighter heat exchangers can be used. Due to the small wall thickness of the heat exchanger according to the invention, the heat conductivity of the heat exchanger material can be practically neglected and increases the efficiency of the heat exchanger by a significant factor.
  • the heat exchanger ribs on the Profilrohrmantel inside and / or on the Profilrohrmantel outside could be associated with turbulizers, the improved heat transfer by the fluid flow imprinting turbulence to have.
  • the profile tube at the two end faces may be associated with a connection flange with at least one flow opening for one of the two profiles, and in operation the heat exchanger flows through the heat carrier fluid in the axial direction.
  • the profile tube at one of the two end faces may be a connection flange with at least one flow opening for one of the two fluids, wherein the other of the two end faces is completed.
  • a coaxial to the profile axis fluid pipe is provided which extends through the connecting flange and protrudes in the direction of the closed end face.
  • the heat carrier fluid can be discharged to and from the heat exchanger, which in turn can be discharged from the heat exchanger through a coaxial opening in the connection flange or introduced into the heat exchanger. This makes it possible to realize annealing furnaces with heat exchangers requiring only little space.
  • the flow opening of a heat exchanger according to the invention is preferably associated with a flame tube of a burner, which optionally with - A -
  • FIG. 1 shows a heat exchanger according to the invention in longitudinal section
  • Fig. 2 shows the heat exchanger of Figure 1 in section along the line N-II of Fig. 1
  • Fig. 3 shows a design variant of the heat exchanger of FIG. 1 in a partially sectioned longitudinal section
  • Fig. 4 the Heat exchanger of Fig. 1 in an enlarged oblique view.
  • a heat exchanger 1 for an annealing furnace for exchanging heat between two fluids, a hot gas flowing through the heat exchanger inside and an internal annealing furnace to be heated by the heat exchanger comprises a connection flange 4 with at least one flow opening 8 for one of the two fluids, into which flow opening 8 on at least one end face 3 optionally a flame tube of a burner can be used.
  • the heat exchanger 1 is formed by a profile, which according to the invention is a profile tube 5 made of folded sheet metal whose profile tube longitudinal direction, parallel to the profile tube axis 6, aligned heat exchanger ribs 7 are formed by the wave profile, in particular of the wave flanks of the folded sheet.
  • the profiled tube 5 has at both end faces a connection flange 4, each with at least one flow opening 8 for one of the two fluids, which flows through the profile tube 5 in operation in the direction of the profile tube axis 9.
  • the embodiment of FIG. 3 belongs to the profile tube 5 at one of the two end faces a connection flange 4 with a flow opening 8 for one of the two fluids and is the other of the two end faces with a cover plate 10 completed.
  • a fluid pipe 11 which is coaxial to the profile tube axis 9 is provided which projects through the connection flange 4 and protrudes in the direction of the closed end side, to the end plate 10.
  • the hot gas is introduced through the fluid pipe 11 into the heat exchanger 1 and leaves it through a coaxial annular gap between the fluid pipe 11 and the connection flange 4 through the flow opening 8.
  • the heat exchanger 1 is made by folding sheet metal with welded end pieces, wherein the folding takes place without stretching on the longitudinal sides of the profile surfaces.

Abstract

The invention relates to a heat exchanger (1) for an annealing furnace for exchanging heat between two fluids, having a tubular profile, which comprises heat exchanger ribs on the outer shell thereof and which on at least one end face (3) is associated with a connecting flange (4) having at least one flow opening (8) for one of the two fluids, particularly a hot gas. In order to create advantageous design conditions, according to the invention the profile is a profile tube made of a folded metal sheet, the heat exchanger ribs (7) of which oriented in the profile tube longitudinal direction are formed by the undulated profile, particularly by the undulation flanks, of the folded metal sheet.

Description

Wärmetauscher für einen Glühofen zum Wärmetausch zwischen zwei Fluiden Heat exchanger for an annealing furnace for heat exchange between two fluids
Technisches GebietTechnical area
Die Erfindung betrifft einen Wärmetauscher für einen Glühofen zum Wärmetausch zwischen zwei Fluiden mit einem rohrförmigen, an seinem Außenmantel Wärmetauscherrippen aufweisenden Profil, dem an wenigstens einer Stirnseite ein Anschlussflansch mit wenigstens einer Strömungsöffnung für eines der beiden Fluide, insbesondere ein Heißgas, zugehört.The invention relates to a heat exchanger for an annealing furnace for exchanging heat between two fluids having a tubular, on its outer shell heat exchanger ribs having profile on at least one end face a connection flange with at least one flow opening for one of the two fluids, in particular a hot gas heard.
Stand der TechnikState of the art
Bei der Wärmebehandlung von metallischem Glühgut erfolgt sowohl die Wärmebehandlung als auch die gegebenenfalls notwendige nachfolgende Abkühlung unter einem Schutzgas, meist Stickstoff oder Wasserstoff bzw. einem Gemisch dieser Gase. Um dabei stets eine ordnungsgemäße, von Verunreinigungen und von eine Oxidation bewirkenden Stoffen, freie Schutzgasatmosphäre gewährleisten zu können, erfolgt die Wärmezu- bzw. Abfuhr bislang üblicherweise über hochtemperaturfeste Wärmetauscher aus Gussmaterialien oder aus Keramik. Diese Wärmetauscher bzw. Rekuperatoren werden von Heißgasen, insbesondere von Brenngasen oder dgl. durchströmt, wobei das Heißgas die Wärme an den Wärmetauscher abgibt und dieser die Wärme wiederum über seine äußeren Kühlrippen beispielsweise in einen Glühraum oder dgl. abgiebt. Bei den bekannten, aus Stahlrohren aufgebauten Wärmetauschern geschieht dies dadurch, dass diese Rohre an ihrem Außenmantel Kühlrippen zur Vergrößerung der Oberfläche aufweisen. Von Nachteil ist bei den bekannten Wärmetauschern allerdings, dass diese aus massivem hitzebestän- digem Material, wie insbesondere Guss oder Keramik, gefertigt werden, was nicht nur die Aufheizzeit des Wärmetauschers auf Grund seiner großen thermischen Masse erhöht, sondern auch das Aufprägen von besonders starken dynamischen Temperaturschwankungen auf Grund des großen Wärmespeichervermögens verhindert und den Wirkungsgrad einer Anlage verringert.In the heat treatment of metallic Glühgut both the heat treatment and the optionally necessary subsequent cooling takes place under a protective gas, usually nitrogen or hydrogen or a mixture of these gases. In order to always be able to ensure a proper, by impurities and oxidation causing substances, free inert gas atmosphere, the heat supply or discharge is usually carried out over high-temperature resistant heat exchanger made of cast materials or ceramic. These heat exchangers or recuperators are traversed by hot gases, in particular fuel gases or the like, wherein the hot gas gives off the heat to the heat exchanger and this in turn the heat over its outer cooling fins, for example, in a space or the like. In the known, made of steel tubes heat exchangers, this is done by having these tubes on their outer jacket cooling fins to increase the surface area. A disadvantage of the known heat exchangers, however, is that they are made of solid heat-resistant digem material, in particular cast or ceramic, are manufactured, which not only increases the heat-up time of the heat exchanger due to its large thermal mass, but also prevents the imposition of particularly strong dynamic temperature fluctuations due to the large heat storage capacity and reduces the efficiency of a plant.
Ausgehend von einem Stand der Technik der eingangs geschilderten Art liegt der Erfindung die Aufgabe zugrunde, einen Wärmetauscher für einen Glühofen zu schaffen, der zur Abbildung hoch dynamischer Temperaturschwankungen, wie sie insbesondere bei der Wärmebehandlung von Glühgut erforderlich sein können, geeignet ist.Based on a prior art of the type described, the invention has for its object to provide a heat exchanger for an annealing furnace, which is suitable for imaging highly dynamic temperature fluctuations, as may be required in particular during the heat treatment of Glühgut.
Darstellung der ErfindungPresentation of the invention
Die Erfindung löst diese Aufgabe dadurch, dass das Profil ein Profilrohr aus einem gefalteten Blech ist, dessen in Profilrohrlängsrichtung ausgerichtete Wärmetauscherrippen vom Wellprofil, insbesondere von den Wellenflanken, des gefalteten Bleches gebildet sind.The invention solves this problem in that the profile is a profile tube made of a folded sheet metal, which are aligned in the profile tube longitudinal direction heat exchanger ribs from the corrugated profile, in particular of the wave flanks of the folded sheet.
Mit der Erfindung wird eine besonders einfache und kostengünstige Möglichkeit zur Fertigung eines für einen Glühofen geeigneten Wärmetauscher geschaffen, der bei besonders geringem Materialeinsatz und somit geringem Gewicht eben aufgrund seines geringeren inneren Wärmespeichervermögens besonders dynamische Temperaturschwankungen im Glühofen realisieren kann. Dadurch, dass das Profil ein Profilrohr aus gefaltetem Blech ist, vergrößert sich beim erfindungsgemäßen Wärmetauscher nicht nur die Wärmetauscheraußenmantelfläche, wie dies beim Stand der Technik der Fall ist, sondern auch die Wärmetauscherinnenmantelfläche, wodurch die im Heißgas enthaltene Energie einerseits besser ausgenutzt wird und anderseits bei gegenüber dem Stand der Technik gleich großen Wärmetauschern höhere Wärmeenergieströme realisiert werden können. Sind gegenüber dem Stand der Technik gleiche Energiemengen zu transportieren, liegt der Erfindung der Vorteil zugrunde, dass nunmehr kleinere und leichtere Wärmetauscher zum Einsatz kommen können. Aufgrund der geringen Wandstärke des erfindungsgemäßen Wärmetauschers kann das Wärmeleitvermögen des Wärmetauschermaterials praktisch vernachlässigt werden und erhöht sich der Wirkungsgrad des Wärmetauschers um einen bedeutenden Faktor.With the invention, a particularly simple and cost-effective way of producing a heat exchanger suitable for an annealing furnace is provided which can realize particularly dynamic temperature fluctuations in the annealing furnace with a particularly low material usage and thus low weight just because of its lower internal heat storage capacity. The fact that the profile is a profile tube made of folded sheet, increases not only the Wärmetauscheraußenmantelfläche in the heat exchanger according to the invention, as is the case in the prior art, but also the heat exchanger inner surface, whereby the energy contained in the hot gas is better utilized on the one hand and on the other hand at compared to the prior art equal heat exchangers higher heat energy flows can be realized. If compared to the prior art to transport the same amount of energy, the invention is based on the advantage that now smaller and lighter heat exchangers can be used. Due to the small wall thickness of the heat exchanger according to the invention, the heat conductivity of the heat exchanger material can be practically neglected and increases the efficiency of the heat exchanger by a significant factor.
Um die im Heißgas enthaltene Energie besser ausnutzen zu können bzw. um den Wärmeübergang zwischen den Fluiden und dem Wärmetauscher zu verbessern, könnten den Wärmetauscherrippen an der Profilrohrmantelinnenseite und/oder an der Profilrohrmantelaußenseite Wirbulatoren zugeordnet sein, die einen verbesserten Wärmeübergang durch dem Fluidstrom aufprägende Turbulenzen zufolge haben.In order to better exploit the energy contained in the hot gas or to improve the heat transfer between the fluids and the heat exchanger, the heat exchanger ribs on the Profilrohrmantel inside and / or on the Profilrohrmantel outside could be associated with turbulizers, the improved heat transfer by the fluid flow imprinting turbulence to have.
Im einfachsten Fall kann dem Profilrohr an den beiden Stirnseiten ein Anschlussflansch mit wenigstens einer Strömungsöffnung für eines der beiden Profile zugehören und wird der Wärmetauscher im Betrieb von dem Wärmeträ- gerfluid in axialer Richtung durchströmt.In the simplest case, the profile tube at the two end faces may be associated with a connection flange with at least one flow opening for one of the two profiles, and in operation the heat exchanger flows through the heat carrier fluid in the axial direction.
Alternativ dazu kann dem Profilrohr an einer der beiden Stirnseiten ein Anschlussflansch mit wenigstens einer Strömungsöffnung für eines der beiden Fluide zugehören, wobei die andere der beiden Stirnseiten abgeschlossen ist. Besonders vorteilhafte Konstruktionsverhältnisse ergeben sich dabei, wenn ein zu der Profilachse koaxiales Fluidrohr vorgesehen ist, das den Anschlussflansch durchragt und in Richtung der abgeschlossenen Stirnseite vorragt. Durch dieses Fluidrohr kann das Wärmeträgerfluid ein bzw. aus dem Wärmetauscher ausgebracht werden, welches durch eine koaxiale Öffnung im Anschlussflansch wiederum aus dem Wärmetauscher ausgebracht bzw. in den Wärmetauscher eingebracht werden kann. Damit lassen sich Glühöfen mit nur besonders wenig Raum beanspruchenden Wärmetauschern realisieren.Alternatively, the profile tube at one of the two end faces may be a connection flange with at least one flow opening for one of the two fluids, wherein the other of the two end faces is completed. Particularly advantageous construction conditions arise when a coaxial to the profile axis fluid pipe is provided which extends through the connecting flange and protrudes in the direction of the closed end face. Through this fluid pipe, the heat carrier fluid can be discharged to and from the heat exchanger, which in turn can be discharged from the heat exchanger through a coaxial opening in the connection flange or introduced into the heat exchanger. This makes it possible to realize annealing furnaces with heat exchangers requiring only little space.
Der Strömungsöffnung eines erfindungsgemäßen Wärmetauschers ist vorzugsweise ein Flammrohr eines Brenners zugeordnet, der gegebenenfalls mit - A -The flow opening of a heat exchanger according to the invention is preferably associated with a flame tube of a burner, which optionally with - A -
einem Teil der vorgewärmten Wärmetauscherabluft, also einem Teil des aus dem Wärmetauscher austretenden Heißgases, praktisch zur Nachverbrennung, betrieben wird.a part of the preheated heat exchanger exhaust air, so a part of the exiting the heat exchanger hot gas, practically for afterburning, is operated.
Kurze Beschreibung der ZeichnungShort description of the drawing
In der Zeichnung ist die Erfindung anhand eines Ausführungsbeispieles schematisch dargestellt. Es zeigenIn the drawing, the invention is illustrated schematically using an exemplary embodiment. Show it
Fig. 1 einen erfindungsgemäßen Wärmetauscher im Längsschnitt, Fig. 2 den Wärmetauscher aus Fig. 1 im Schnitt nach der Linie N-Il aus Fig. 1 , Fig. 3 eine Konstruktionsvariante des Wärmetauschers aus Fig. 1 in teilgeschnittenem Längsschnitt und Fig. 4 den Wärmetauscher aus Fig. 1 in vergrößerter Schrägansicht.1 shows a heat exchanger according to the invention in longitudinal section, Fig. 2 shows the heat exchanger of Figure 1 in section along the line N-II of Fig. 1, Fig. 3 shows a design variant of the heat exchanger of FIG. 1 in a partially sectioned longitudinal section and Fig. 4 the Heat exchanger of Fig. 1 in an enlarged oblique view.
Weg zur Ausführung der ErfindungWay to carry out the invention
Ein Wärmetauscher 1 für einen Glühofen zum Wärmeaustausch zwischen zwei Fluiden, einem das Wärmetauscherinnere durchströmenden Heißgas 2 und einem vom Wärmetauscher aufzuwärmenden Glühofen inneren, umfasst an wenigstens einer Stirnseite 3 einen Anschlussflansch 4 mit wenigstens einer Strömungsöffnung 8 für eines der beiden Fluide, in welche Strömungsöffnung 8 gegebenenfalls ein Flammrohr eines Brenners eingesetzt sein kann. Der Wärmetauscher 1 wird von einem Profil gebildet, das erfindungsgemäß ein Profilrohr 5 aus gefaltetem Blech ist, dessen in Profilrohrlängsrichtung, parallel zur Profilrohrachse 6, ausgerichtete Wärmetauscherrippen 7 vom Wellenprofil, insbesondere von den Wellenflanken, des gefalteten Bleches gebildet sind.A heat exchanger 1 for an annealing furnace for exchanging heat between two fluids, a hot gas flowing through the heat exchanger inside and an internal annealing furnace to be heated by the heat exchanger, comprises a connection flange 4 with at least one flow opening 8 for one of the two fluids, into which flow opening 8 on at least one end face 3 optionally a flame tube of a burner can be used. The heat exchanger 1 is formed by a profile, which according to the invention is a profile tube 5 made of folded sheet metal whose profile tube longitudinal direction, parallel to the profile tube axis 6, aligned heat exchanger ribs 7 are formed by the wave profile, in particular of the wave flanks of the folded sheet.
Gemäß dem Ausführungsbeispiel nach den Fig. 1 und 2 gehört dem Profilrohr 5 an beiden Stirnseiten ein Anschlussflansch 4 mit je wenigstens einer Strömungsöffnung 8 für eines der beiden Fluide zu, welches das Profilrohr 5 im Betrieb in Richtung der Profilrohrachse 9 durchströmt. Gemäß dem Ausführungsbeispiel nach Fig. 3 gehört dem Profilrohr 5 an einer der beiden Stirnseiten ein Anschlussflansch 4 mit einer Strömungsöffnung 8 für eines der beiden Fluide zu und ist die andere der beiden Stirnseiten mit einem Abschlussblech 10 abgeschlossen. Des Weiteren ist ein zur Profilrohrachse 9 koaxiales Fluidrohr 11 vorgesehen, das den Anschlussflansch 4 durchragt und in Richtung der abgeschlossenen Stirnseite, zum Abschlussblech 10, hin vorragt. Das Heißgas wird durch das Fluidrohr 11 in den Wärmetauscher 1 eingebracht und verlässt diesen durch einen koaxialen Ringspalt zwischen dem Fluidrohr 11 und dem Anschlussflansch 4 durch die Strömungsöffnung 8.According to the embodiment according to FIGS. 1 and 2, the profiled tube 5 has at both end faces a connection flange 4, each with at least one flow opening 8 for one of the two fluids, which flows through the profile tube 5 in operation in the direction of the profile tube axis 9. According to the embodiment of FIG. 3 belongs to the profile tube 5 at one of the two end faces a connection flange 4 with a flow opening 8 for one of the two fluids and is the other of the two end faces with a cover plate 10 completed. Furthermore, a fluid pipe 11 which is coaxial to the profile tube axis 9 is provided which projects through the connection flange 4 and protrudes in the direction of the closed end side, to the end plate 10. The hot gas is introduced through the fluid pipe 11 into the heat exchanger 1 and leaves it through a coaxial annular gap between the fluid pipe 11 and the connection flange 4 through the flow opening 8.
Der Wärmetauscher 1 wird durch Faltung von Blech mit angeschweißten Endstücken gefertigt, wobei die Faltung ohne Dehnung an den Längsseiten der Profilflächen erfolgt. The heat exchanger 1 is made by folding sheet metal with welded end pieces, wherein the folding takes place without stretching on the longitudinal sides of the profile surfaces.

Claims

P a t e n t a n s p r ü c h e : Patent claim:
1. Wärmetauscher für einen Glühofen zum Wärmetausch (1) zwischen zwei Fluiden mit einem rohrförmigen, an seinem Außenmantel Wärmetauscherrippen aufweisenden Profil, dem an wenigstens einer Stirnseite (3) ein Anschlussflansch (4) mit wenigstens einer Strömungsöffnung (8) für eines der beiden Fluide, insbesondere ein Heißgas, zugehört, dadurch gekennzeichnet, dass das Profil ein Profilrohr (5) aus einem gefalteten Blech ist, dessen in Profilrohrlängsrichtung ausgerichtete Wärmetauscherrippen (7) vom Wellenprofil des gefalteten Bleches gebildet sind.1. A heat exchanger for an annealing furnace for heat exchange (1) between two fluids having a tubular, on its outer shell heat exchanger ribs having profile on at least one end face (3) a connection flange (4) with at least one flow opening (8) for one of the two fluids , in particular a hot gas, listened to, characterized in that the profile is a profile tube (5) made of a folded sheet metal, whose heat exchanger ribs (7) oriented in the profile tube longitudinal direction are formed by the wave profile of the folded sheet.
2. Wärmetauscher nach Anspruch 1 , dadurch gekennzeichnet, dass den Wärmetauscherrippen (7) an der Profilrohrmantelinnenseite und/oder an der Profilrohrmantelaußenseite Wirbulatoren zugeordnet sind.2. Heat exchanger according to claim 1, characterized in that the heat exchanger ribs (7) are assigned to the Profilrohrmantelinnenseite and / or on the Profilrohrmantelmantel outside swirlers.
3. Wärmetauscher nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass dem Profilrohr (5) an beiden Stirnseiten ein Anschlussflansch (4) mit je wenigstens einer Strömungsöffnung (8) für eines der beiden Fluide zugehört.3. Heat exchanger according to claim 1 or 2, characterized in that the profile tube (5) on both end faces a connection flange (4) with at least one flow opening (8) for one of the two fluids listened.
4. Wärmetauscher nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass dem Profilrohr (5) an einer der beiden Stirnseiten ein Anschlussflansch (4) mit wenigstens einer Strömungsöffnung (8) für eines der beiden Fluide zugehört und dass die andere der beiden Stirnseiten abgeschlossen ist.4. Heat exchanger according to claim 1 or 2, characterized in that the profile tube (5) at one of the two end faces a connection flange (4) with at least one flow opening (8) for one of the two fluids listened to and that the other of the two end faces is completed ,
5. Wärmetauscher nach Anspruch 4, dadurch gekennzeichnet, dass ein zur Profilrohrachse (9) koaxiales Fluidrohr (11) vorgesehen ist, das den Anschlussflansch (4) durchragt und in Richtung der abgeschlossenen Stirnseite vorragt. 5. Heat exchanger according to claim 4, characterized in that a profile tube to the axis (9) coaxial fluid pipe (11) is provided, which projects through the connecting flange (4) and protrudes in the direction of the closed end side.
PCT/AT2009/000391 2008-10-20 2009-10-09 Heat exchanger for an annealing furnace for exchanging heat between two fluids WO2010045664A2 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
EP09740624.3A EP2342522B1 (en) 2008-10-20 2009-10-09 Annealing furnace with heat exchanger
CN2009801417902A CN102187173B (en) 2008-10-20 2009-10-09 Heat exchanger for an annealing furnace for exchanging heat between two fluids
MX2011004231A MX2011004231A (en) 2008-10-20 2009-10-09 Heat exchanger for an annealing furnace for exchanging heat between two fluids.
RU2011120166/06A RU2493526C2 (en) 2008-10-20 2009-10-09 Heat-exchanger of annealing furnace for heat exchange between two fluid media
CA2741095A CA2741095A1 (en) 2008-10-20 2009-10-09 A heat exchanger for an annealing furnace for exchanging heat between two fluids
JP2011532463A JP2012506025A (en) 2008-10-20 2009-10-09 Heat exchanger for an annealing furnace to exchange heat between two fluids
US12/998,427 US20110308780A1 (en) 2008-10-20 2009-10-09 Heat exchanger for an annealing furnace for exchanging heat between two fluids
BRPI0919799A BRPI0919799A2 (en) 2008-10-20 2009-10-20 Heat exchanger for an annealing furnace for heat exchange between two fluids.
ZA2011/02683A ZA201102683B (en) 2008-10-20 2011-04-11 A heat exchanger for an annealing furnace for exchanging heat between two fluids

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA1641/2008 2008-10-20
AT0164108A AT507422B1 (en) 2008-10-20 2008-10-20 HEAT EXCHANGER FOR A HEAT EXCHANGER FOR HEAT EXCHANGE BETWEEN TWO FLUIDS

Publications (2)

Publication Number Publication Date
WO2010045664A2 true WO2010045664A2 (en) 2010-04-29
WO2010045664A3 WO2010045664A3 (en) 2011-04-28

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PCT/AT2009/000391 WO2010045664A2 (en) 2008-10-20 2009-10-09 Heat exchanger for an annealing furnace for exchanging heat between two fluids

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US (1) US20110308780A1 (en)
EP (1) EP2342522B1 (en)
JP (1) JP2012506025A (en)
KR (1) KR20110076949A (en)
CN (1) CN102187173B (en)
AT (1) AT507422B1 (en)
BR (1) BRPI0919799A2 (en)
CA (1) CA2741095A1 (en)
MX (1) MX2011004231A (en)
RU (1) RU2493526C2 (en)
TW (1) TW201027019A (en)
WO (1) WO2010045664A2 (en)
ZA (1) ZA201102683B (en)

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ZA201102683B (en) 2012-06-27
CA2741095A1 (en) 2010-04-29
TW201027019A (en) 2010-07-16
EP2342522B1 (en) 2013-11-20
US20110308780A1 (en) 2011-12-22
JP2012506025A (en) 2012-03-08
MX2011004231A (en) 2011-06-17
KR20110076949A (en) 2011-07-06
RU2493526C2 (en) 2013-09-20
RU2011120166A (en) 2012-11-27
EP2342522A2 (en) 2011-07-13
CN102187173B (en) 2013-04-03
BRPI0919799A2 (en) 2016-05-03
CN102187173A (en) 2011-09-14
AT507422B1 (en) 2010-05-15
WO2010045664A3 (en) 2011-04-28
AT507422A4 (en) 2010-05-15

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