EP2947161B1 - Flow application device - Google Patents

Flow application device Download PDF

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Publication number
EP2947161B1
EP2947161B1 EP14169078.4A EP14169078A EP2947161B1 EP 2947161 B1 EP2947161 B1 EP 2947161B1 EP 14169078 A EP14169078 A EP 14169078A EP 2947161 B1 EP2947161 B1 EP 2947161B1
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EP
European Patent Office
Prior art keywords
goods
plane
flow
outlet channels
arrangement
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Active
Application number
EP14169078.4A
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German (de)
French (fr)
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EP2947161A1 (en
Inventor
Michael Karges
Siegfried Wilden
Frank WILDEN
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Schwartz GmbH
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Schwartz GmbH
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Priority to EP14169078.4A priority Critical patent/EP2947161B1/en
Priority to PL14169078T priority patent/PL2947161T3/en
Priority to ES14169078T priority patent/ES2893427T3/en
Publication of EP2947161A1 publication Critical patent/EP2947161A1/en
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    • 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
    • C21D9/70—Furnaces for ingots, i.e. soaking pits
    • 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
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/767—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material with forced gas circulation; Reheating thereof
    • 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
    • C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B17/00—Furnaces of a kind not covered by any preceding group
    • F27B17/0016—Chamber type furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B17/00—Furnaces of a kind not covered by any preceding group
    • F27B17/0016—Chamber type furnaces
    • F27B17/0083—Chamber type furnaces with means for circulating the atmosphere
    • 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
    • F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/04—Circulating atmospheres by mechanical means
    • 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
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/663—Bell-type furnaces
    • 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
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/663—Bell-type furnaces
    • C21D9/673—Details, accessories, or equipment peculiar to bell-type furnaces

Definitions

  • the invention relates to a device for applying flow to a grid-like arrangement of goods.
  • grid-like arrangements of goods can be found, for example, in soaking furnaces, chamber furnaces and pusher furnaces, where the goods can be in the form of bars or bolts, for example.
  • the heating is usually carried out by means of a heated gas flow, for example by means of warm air.
  • the air is heated directly via burners, for example via gas burners, and blown into the deep furnace via a fan.
  • the only practicable reversible flow drive is an axial fan with appropriately selected blading, in which a reversal of the conveying direction of the gas flow can be achieved by changing the direction of rotation of the impeller.
  • axial fans With such axial fans, however, only relatively low pressures can be achieved, since their peripheral speed is only limited for reasons of strength, especially at high temperatures.
  • Axial fans are therefore only suitable for flow circuits with relatively low resistances, while at higher resistances, such as occur in a wide stack of grid-shaped good layers or in high rows of good compared to the width of the gaps, the pressure coefficients that can be achieved for an effective flow are high are too low.
  • the object of the invention is to create a device for applying flow to a grid-like arrangement of goods of the specified type, in which the uniformity of the heating of the goods is further increased.
  • a device is to be proposed which further optimizes the uniform flow of the material in a structurally simple manner.
  • a device for applying flow to a grid-shaped arrangement of goods with interstices that can be flowed through, with a gas volume flow blowing the goods by means of nozzles which are provided offset from one another on opposite sides of the goods, so that in the interstices a flow that changes in direction according to the staggered arrangement of the nozzles is characterized in that outlet channels for the gas volume flow are provided in at least one plane outside the extent of the goods, the goods being able to be set up on at least one post, and in that the outlet channels are arranged in two planes, a first plane of which in the longitudinal direction of extent of the item to be set up on the post is provided below the item and a second level in the longitudinal direction of the item to be set up on the post is provided above the item.
  • the gas flow through the gaps that can be flowed through is evened out, whereby the heat transfer between the gas flow and the good is evened out and ultimately the uniformity of the heating of the good is increased.
  • the speed of the blown gas flow does not fall below a critical value at any point and dead water areas are avoided.
  • the heat transfer to the product is homogenized, as a result of which equalization times can be saved and thus the required dwell time of the product in the device is minimized.
  • the outlet channels are dimensioned in such a way that the same gas volume flow that is supplied can be discharged via the outlet channels. This minimizes the risk of a jam or an extreme acceleration of the gas volume flow, which further increases the uniformity of the heating of the material.
  • the at least one plane of the outlet channels is provided essentially perpendicular to the surface of the grid-like arrangement of goods.
  • the plane of the outlet channels can be arranged essentially vertically above and / or below the product. With such a position of the outlet channels, the gas flow and thus the heating of the goods is further evened out and the construction is simplified.
  • the outlet channels are arranged in two planes, of which a first plane is provided in the longitudinal direction of extent of the goods below the goods and a second plane in the longitudinal direction of extent of the goods is provided above the goods.
  • the outlet channels are provided in the first plane essentially in the direction of the plane of the grid-like arrangement of goods and in a plane that is essentially perpendicular thereto.
  • the paths within the outlet channels are thereby shortened, as a result of which the gas flow within the device is further evened out.
  • the nozzles are arranged in register form in rows one above the other in the longitudinal direction of the goods.
  • the supplied gas flow is also made more uniform over the height of the goods within the device, which contributes to an even more uniform flow of the goods and thus to an even more uniform heating of the goods.
  • the upright can be flowed through in the direction of the blowing direction of the nozzles.
  • the upright can be flowed through in a direction essentially perpendicular to the blowing direction of the nozzles.
  • the heating of the goods is evened out by the flow through the upright. If the upright can be flowed through both in the direction of the blowing direction of the nozzles and essentially perpendicular to this, the heating of the goods is particularly evened out.
  • a method according to the invention for applying flow to a grid-shaped arrangement of goods with interstices that can be flowed through wherein a gas volume flow blows the material by means of nozzles which are provided offset from one another on opposite sides of the goods, so that in the interstices a flow that changes in direction according to the staggered arrangement of the nozzles is characterized by the fact that the same gas volume flow that is supplied is discharged via outlet channels.
  • the discharged gas volume flow is discharged via outlet channels arranged in two planes.
  • the first level is located below the item in the longitudinal direction of the item, while the second level is located above the item in the longitudinal direction of the item.
  • the gas volume flows discharged through the first and the second level in a ratio of approximately V ⁇ 1 : V ⁇ 2 ⁇ 1: 1 with a tolerance of approximately ⁇ 15%, in other words in a ratio of V. ⁇ 1 : V ⁇ 2 ⁇ 1: 0.85 to V ⁇ 1 : V ⁇ 2 ⁇ 1: 1.15.
  • the feed gas stream V to about 160 m 3 / s, the feed rate v to about 50 m / s, it is advantageously via the first is located below the material plane, a gas flow rate v 1 of approximately 80 m 3 / s are discharged at a flow velocity v 1 of at most approx. 15 m / s, while a substantially equal volume flow is discharged with substantially the same flow velocity v 2 via the second level above the goods.
  • Fig. 1 shows an ingot 111 with its dimensions height H, width B and thickness D.
  • Fig. 2 shows a basic representation of a deep furnace 100 according to the invention in a plan view.
  • the bars 111 are set up in the furnace chamber 122 in such a way that they stand in rows next to one another in the direction of their width B, whereby they form a planar arrangement of goods 111. Both in the plane of the grid-like arrangement of goods 111 and in a perpendicular direction thereto, the bars 111 form interstices 112 through which a flow can flow.
  • the furnace chamber 122 itself is also rectangular, with nozzles 120 being arranged on its end faces through which the bars 111 are blown with a gas stream will. In this case, the nozzles 120 are provided offset from one another on opposite sides of the bars 111, so that in the intermediate spaces 112 a throughflow that changes in direction is created in accordance with the offset arrangement of the nozzles 120.
  • a schematic representation of a section of a device according to the invention in the form of a deep furnace 100 is shown three-dimensionally.
  • bars 111 are arranged over a large area as goods to be heated, with gaps between the bars 111 through which flow can occur.
  • the bars 111 have a rectangular cross section and are each placed on a post 130.
  • a gas volume flow blows the bars 111 via nozzles 120 arranged one above the other in register, the nozzles 120 being provided offset from one another on opposite sides of the bars 111, so that in the gaps in the width direction of the bars the direction of the nozzles 120 changes according to the offset arrangement Flow arises.
  • Outlet channels 141, 151 for the gas volume flow are provided in a first level 140 below the uprights 130 and in a second level 150 above the bars 111.
  • the gas flow through the interstices through which the flow can flow is evened out, whereby the heat transfer between the gas flow and the bar 111 is evened out and ultimately the uniformity of the heating of the bars 111 is increased .
  • the speed v zu of the blown The gas flow does not drop below a critical value at any point and dead water areas are avoided.
  • the heat transfer to the bars 111 is homogenized, as a result of which equalization times can be saved and thus the required dwell time of the bars 111 in the deep furnace 100 is minimized.
  • the supplied gas volume flow V ⁇ Zu is fed to the nozzles 120 via chambers 122, which are located behind the nozzles 120 as seen from the furnace chamber 110.
  • the gas flow guided through the nozzles 120, which are arranged one above the other in register, is evened out by means of a nozzle protector 121 provided in the same direction behind the nozzles 120.
  • the outlet channels 141, 151 are dimensioned in such a way that the same gas volume flow V ⁇ Zu can be discharged via the outlet channels 141, 151 that is supplied. This minimizes the risk of a jam or an extreme acceleration of the gas volume flow, which further increases the uniformity of the heating of the ingots.
  • the uprights 130 have flow channels 131 in the blowing direction of the nozzles 120. As a result of the flow through the upright 130 as well, the heating of the bars 111 is evened out further. Furthermore, the posts 130 also have openings 132 essentially perpendicular to the blowing direction of the nozzles 120, through which gas can likewise flow. As a result, the heating of the ingot 111 is evened out to a particular extent.
  • the entire deep furnace is surrounded by insulation 160, as a result of which the energy consumption during operation is minimized and the temperature distribution in the furnace chamber 110 is homogenized.
  • the bars 111 have a rectangular cross-section, and they are placed on the posts 130 in the same direction, so that the interstices through which flow can occur.
  • the outlet channels 141 in the first plane 140 and the outlet channels 151 in the second plane 150 are provided essentially in the direction of the plane of the longer rectangular side of the cross section of the bars 111 and in a plane essentially perpendicular thereto.
  • the paths within the exhaust ducts are shortened as a result, as a result of which the gas flow within the device is further evened out.
  • the gas volume flows discharged through the first level 140 and the second level 150 have a ratio of approximately V ⁇ 1 : V ⁇ 2 ⁇ 1: 1.
  • the gas flow V ⁇ Zu is approximately 160 m 3 / s, with the supply speed v Zu is approx. 50 m / s.
  • a gas volume flow V ⁇ 1 of approximately 80 m 3 / s with a flow velocity v 1 of approximately 15 m / s is discharged via the first level 140 located below the bar 111, while via the second level located above the bar 111 150 likewise about 80 m 3 / s of gas with a flow velocity v 2 of about 15 m / s.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Details (AREA)
  • Tunnel Furnaces (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zur Strömungsbeaufschlagung einer rasterförmigen Gut-Anordnung. Solche rasterförmigen Gutanordnungen finden sich beispielsweise in Tieföfen, Kammeröfen und Stoßöfen, wobei das Gut beispielsweise in Form von Barren oder Bolzen vorliegen kann.The invention relates to a device for applying flow to a grid-like arrangement of goods. Such grid-like arrangements of goods can be found, for example, in soaking furnaces, chamber furnaces and pusher furnaces, where the goods can be in the form of bars or bolts, for example.

Beispielsweise werden für die Herstellung von Aluminiumbändern Aluminium-Walzbarren warm gewalzt. Dafür müssen die Barren auf eine Temperatur oberhalb der Rekristallisationstemperatur erwärmt werden. Walzbarren werden mit einer Dicke von circa 330 bis über 600 mm, einer Breite von circa 800 bis über 2200 mm und bis zu mehr als 8,5 Meter Länge geliefert. Bei der Erwärmung der Barren auf eine Temperatur oberhalb der Rekristallisationstemperatur kommt es zu einer Verfestigung des Aluminiums und zu einer dynamischen und statischen Entfestigung durch Erholung und Rekristallisation. Bei der notwendigen Erwärmung ist die Auflösung der Ausscheidungen der bestimmende Vorgang, wofür die entsprechende Temperatur und die Haltezeit die bestimmenden Parameter sind. Die Erwärmung erfolgt hauptsächlich über brennstoffbeheizte Kammer- bzw. Tieföfen im Bereich von 300 bis 620°C. Tiefofenanlagen ermöglichen eine vertikale Aufstellung der Barren. Vorteilig hierbei ist unter anderem die platzsparende Aufstellung, da die Barren in die Tiefe versenkt werden können. Die Chargierung erfolgt dann mittels Krananlagen.For example, aluminum billets are hot rolled for the production of aluminum strips. To do this, the bars must be heated to a temperature above the recrystallization temperature. Rolling slabs are supplied with a thickness of approx. 330 to over 600 mm, a width of approx. 800 to over 2200 mm and a length of more than 8.5 meters. When the ingots are heated to a temperature above the recrystallization temperature, the aluminum solidifies and there is a dynamic and static softening through recovery and recrystallization. In the case of the necessary heating, the dissolution of the precipitates is the determining process, for which the corresponding temperature and the holding time are the determining parameters. The heating takes place mainly via fuel-heated chamber or deep furnaces in the range of 300 to 620 ° C. Soaking furnace systems enable the bars to be set up vertically. One of the advantages of this is the space-saving installation, since the bars can be sunk into the depths. Charging is then carried out using crane systems.

Die Beheizung erfolgt üblicherweise mittels eines erhitzten Gasstroms, beispielsweise mittels Warmluft. Dabei wird die Luft über Brenner, beispielsweise über Gasbrenner, direkt erwärmt und über Gebläse in den Tiefofen eingeblasen.The heating is usually carried out by means of a heated gas flow, for example by means of warm air. The air is heated directly via burners, for example via gas burners, and blown into the deep furnace via a fan.

Wärmetechnisch handelt es sich um Anordnungen von flächenhaftem Gut mit durchströmbaren Zwischenraumen. Da es nicht möglich ist, solche Gutanordnungen symmetrisch zu durchströmen, ergibt sich bei der Wärmeübertragung mit erzwungener Konvektion stets das Problem der ungleichmäßigen Temperaturverteilung. Man ist daher vielfach gezwungen, mit Rücksicht auf den erforderlichen Temperaturausgleich wesentlich längere Haltezeiten zu fahren, als es aus metallurgischen Gründen erforderlich wäre. Bei Anlagen für höhere Leistungen versucht man, diesem Mangel durch Reversieren der Strömungsführung zu begegnen. Dies kann erreicht werden, in dem in den Strömungskanälen verstellbare Klappen eingebaut werden, wobei die Strömungsrichtung durch Verstellung der Klappen umgedreht werden kann. Solche "Reversierklappen" sind aber insbesondere dann sehr problematisch, wenn sie bei größeren Wärmebehandlungsanlagen mit höheren Temperaturen eingesetzt werden müssen. Denn in diesen Fällen können sich die Reversierklappen verziehen und dadurch verklemmen, wodurch es zu häufigen Störungen oder gar zu Betriebsunterbrechungen kommt. Als praktikabler reversierbarer Strömungsantrieb steht nur ein Axialventilator mit entsprechend gewählter Beschaufelung zur Verfügung, bei dem eine Umkehr der Förderrichtung der Gas-Strömung durch einen Wechsel der Drehrichtung des Schaufelrades erreicht werden kann. Mit solchen Axialventilatoren lassen sich jedoch nur relativ geringe Drücke erzielen, da aus Festigkeitsgründen, insbesondere bei hohen Temperaturen, ihre Umfangsgeschwindigkeit nur begrenzt ist. Deshalb eignen sich Axialventilatoren nur für Strömungskreisläufe mit relativ geringen Widerständen, während bei höheren Widerständen, wie sie gerade bei einem breiten Stapel aus rasterförmigen Gut-Lagen oder im Vergleich zur Breite der Lücken hohen Gut-Reihungen auftreten, die erreichbaren Druckzahlen für eine wirksame Durchströmung viel zu gering sind. Ein weiterer Nachteil von Axialventilatoren ist, dass sie bei Hochtemperaturanlagen aus lagerungstechnischen Gründen meist in eine Wand eingebaut werden müssen. Durch diesen unsymmetrischen Einbau ergeben sich für die beiden Drehrichtungen des Ventilatorrades trotz seiner entsprechenden Anpassung und Gestaltung unterschiedliche Leistungen. Die hierauf zurückzuführenden Unterschiede in der Wärmeübertragung können zwar im Prinzip durch entsprechend längere Behandlungszeit des Gutes ausgeglichen werden. Diese längeren Behandlungszeiten führen jedoch zu erhöhten Betriebs- und damit Herstellungskosten, sodass in aller Regel angestrebt wird, die Behandlungszeiten zu verkürzen.From a thermal point of view, it is an arrangement of two-dimensional goods with gaps that can be flowed through. Since it is not possible to flow through such material arrangements symmetrically, the problem of uneven temperature distribution always arises in the case of heat transfer with forced convection. One is therefore often forced, in consideration of the required temperature compensation, to run significantly longer holding times than would be necessary for metallurgical reasons. In systems for higher capacities, attempts are made to counteract this deficiency by reversing the flow guidance. This can be achieved in the adjustable flaps can be installed in the flow channels, whereby the flow direction can be reversed by adjusting the flaps. Such "reversing flaps" are particularly problematic when they have to be used in larger heat treatment systems with higher temperatures. In these cases, the reversing flaps can warp and jam, which can lead to frequent malfunctions or even to business interruptions. The only practicable reversible flow drive is an axial fan with appropriately selected blading, in which a reversal of the conveying direction of the gas flow can be achieved by changing the direction of rotation of the impeller. With such axial fans, however, only relatively low pressures can be achieved, since their peripheral speed is only limited for reasons of strength, especially at high temperatures. Axial fans are therefore only suitable for flow circuits with relatively low resistances, while at higher resistances, such as occur in a wide stack of grid-shaped good layers or in high rows of good compared to the width of the gaps, the pressure coefficients that can be achieved for an effective flow are high are too low. Another disadvantage of axial fans is that in high-temperature systems they usually have to be built into a wall for storage reasons. This asymmetrical installation results in different performances for the two directions of rotation of the fan wheel despite its corresponding adaptation and design. The differences in the heat transfer that can be traced back to this can in principle be compensated for by a correspondingly longer treatment time of the goods. However, these longer treatment times lead to increased operating and thus manufacturing costs, so that the aim is generally to shorten the treatment times.

Aus der deutschen Offenlegungsschrift DE 3710901 A1 ist eine Vorrichtung zur Strömungsbeaufschlagung von rasterförmigen Gutanordnungen mit durchströmbaren Zwischenräumen bekannt, wobei der von einem Ventilator geförderte Volumenstrom das Gut mittels Düsen bebläst, die auf einander gegenüberliegenden Seiten der rasterförmigen Gutanordnung versetzt zueinander vorgesehen sind, so dass in den Zwischenräumen eine entsprechend der versetzten Anordnung der Düsen in ihrer Richtung wechselnde Durchströmung entsteht. Dabei wird der Reversiereffekt durch eine geeignete Ausgestaltung von Strömungsantrieb und Strömungsführung erzielt. Denn mit den versetzt zu beiden Seiten des Gut-Stapels oder der Gut-Reihung angeordneten Düsen wird das Gut über relative schmale Zonen mit unterschiedlicher Strömungsrichtung, also im Gegenstrom, beaufschlagt. Auf diese Weise ergibt sich der gleiche Effekt wie bei einer Reversieranlage, ohne dass die Strömungsrichtung umgekehrt werden muss. Darüber hinaus ist aus der JP-S-62116726A ein Glühofen bekannt.From the German patent application DE 3710901 A1 a device is known for the application of flow to grid-shaped material arrangements with interstices through which flow is possible, the volume flow conveyed by a fan blowing the material by means of nozzles which are provided offset from one another on opposite sides of the grid-shaped material arrangement, so that in the interstices a corresponding to the staggered arrangement of the Nozzles in their direction alternating flow arises. The reversing effect is achieved by a suitable design of the flow drive and flow guidance. Because with the nozzles arranged offset on both sides of the stack of goods or the row of goods, the goods are acted upon via relatively narrow zones with different flow directions, that is, in countercurrent. This results in the same effect as with a reversing system without having to reverse the direction of flow. In addition, from the JP-S-62116726A known as an annealing furnace.

Aufgabe der Erfindung ist es, eine Vorrichtung zur Strömungsbeaufschlagung einer rasterförmigen Gutanordnung der angegebenen Gattung zu schaffen, bei der die Gleichmäßigkeit der Erwärmung des Guts weiter erhöht wird. Insbesondere soll eine Vorrichtung vorgeschlagen werden, die auf konstruktiv einfache Weise die gleichmäßige Strömungsbeaufschlagung des Gutes weiter optimiert. Darüber hinaus ist es Aufgabe der Erfindung, ein entsprechendes Verfahren anzugeben.The object of the invention is to create a device for applying flow to a grid-like arrangement of goods of the specified type, in which the uniformity of the heating of the goods is further increased. In particular, a device is to be proposed which further optimizes the uniform flow of the material in a structurally simple manner. In addition, it is an object of the invention to specify a corresponding method.

Erfindungsgemäß wird diese Aufgabe durch eine Vorrichtung und ein Verfahren mit den Merkmalen des jeweiligen unabhängigen Anspruches gelöst. Vorteilhafte Weiterbildungen sind Gegenstand der jeweiligen abhängigen Ansprüche.According to the invention, this object is achieved by an apparatus and a method having the features of the respective independent claim. Advantageous further developments are the subject of the respective dependent claims.

Eine erfindungsgemäße Vorrichtung zur Strömungsbeaufschlagung einer rasterförmigen Gutanordnung mit durchströmbaren Zwischenräumen, wobei ein Gasvolumenstrom das Gut mittels Düsen bebläst, die auf einander gegenüberliegenden Seiten des Gutes versetzt zueinander vorgesehen sind, so dass in den Zwischenräumen eine entsprechend der versetzten Anordnung der Düsen in ihrer Richtung wechselnde Durchströmung entsteht, zeichnet sich dadurch aus, dass Auslasskanäle für den Gasvolumenstrom in mindestens einer Ebene außerhalb der Ausdehnung des Gutes vorgesehen sind, wobei das Gut auf mindestens einem Steher aufstellbar ist, und dass die Auslasskanäle in zwei Ebenen angeordnet sind, wovon eine erste Ebene in Längsausdehnungsrichtung des auf dem Steher aufzustellenden Gutes unterhalb des Gutes und eine zweite Ebene in Längsausdehnungsrichtung des auf dem Steher aufzustellenden Gutes oberhalb des Gutes vorgesehen ist. Durch die gezielte Abfuhr des eingeblasenen Gasvolumenstroms über Auslasskanäle außerhalb der Ausdehnung des Gutes wird die Gasströmung durch die durchströmbaren Zwischenräume vergleichmäßigt, womit sich auch der Wärmeübergang zwischen Gasstrom und Gut vergleichmäßigt und letztlich die Gleichmäßigkeit der Erwärmung des Guts erhöht wird. Die Geschwindigkeit des eingeblasenen Gasstroms sinkt an keiner Stelle unter einen kritischen Wert und Totwassergebiete werden vermieden. Dadurch wird der Wärmeübergang auf das Gut homogenisiert, wodurch Ausgleichszeiten eingespart werden können und somit die erforderliche Verweildauer des Gutes in der Vorrichtung minimiert wird.A device according to the invention for applying flow to a grid-shaped arrangement of goods with interstices that can be flowed through, with a gas volume flow blowing the goods by means of nozzles which are provided offset from one another on opposite sides of the goods, so that in the interstices a flow that changes in direction according to the staggered arrangement of the nozzles is characterized in that outlet channels for the gas volume flow are provided in at least one plane outside the extent of the goods, the goods being able to be set up on at least one post, and in that the outlet channels are arranged in two planes, a first plane of which in the longitudinal direction of extent of the item to be set up on the post is provided below the item and a second level in the longitudinal direction of the item to be set up on the post is provided above the item. Through the targeted discharge of the blown gas volume flow via outlet channels outside the expansion of the material, the gas flow through the gaps that can be flowed through is evened out, whereby the heat transfer between the gas flow and the good is evened out and ultimately the uniformity of the heating of the good is increased. The speed of the blown gas flow does not fall below a critical value at any point and dead water areas are avoided. As a result, the heat transfer to the product is homogenized, as a result of which equalization times can be saved and thus the required dwell time of the product in the device is minimized.

In einer vorteilhaften Ausführungsform sind die Auslasskanäle so bemessen, dass der gleiche Gasvolumenstrom über die Auslasskanäle abgeführt werden kann, der zugeführt wird. Dadurch wird die Gefahr eines Staus oder einer extremen Beschleunigung des Gasvolumenstroms minimiert, wodurch die Gleichmäßigkeit der Erwärmung des Guts weiter erhöht wird.In an advantageous embodiment, the outlet channels are dimensioned in such a way that the same gas volume flow that is supplied can be discharged via the outlet channels. This minimizes the risk of a jam or an extreme acceleration of the gas volume flow, which further increases the uniformity of the heating of the material.

Es hat sich weiterhin als vorteilhaft erwiesen, wenn die mindestens eine Ebene der Auslasskanäle im Wesentlichen senkrecht zu der Fläche der rasterförmigen Gutanordnung vorgesehen ist. Beispielsweise kann die Ebene der Auslasskanäle im Wesentlichen senkrecht über und/oder unter dem Gut angeordnet sein. Durch eine solche Lage der Auslasskanäle wird die Gasströmung und damit die Erwärmung des Gutes weiter vergleichmäßigt und die Konstruktion vereinfacht.It has also proven to be advantageous if the at least one plane of the outlet channels is provided essentially perpendicular to the surface of the grid-like arrangement of goods. For example, the plane of the outlet channels can be arranged essentially vertically above and / or below the product. With such a position of the outlet channels, the gas flow and thus the heating of the goods is further evened out and the construction is simplified.

Erfindungsgemäß sind die Auslasskanäle in zwei Ebenen angeordnet, wovon eine erste Ebene in Längsausdehnungsrichtung des Gutes unterhalb des Gutes und eine zweite Ebene in Längsausdehnungsrichtung des Gutes oberhalb des Gutes vorgesehen ist. Durch die dadurch erfolgende Aufteilung des Gasstroms wird die Strömung und damit die Erwärmung des Gutes noch weiter vergleichmäßigt.According to the invention, the outlet channels are arranged in two planes, of which a first plane is provided in the longitudinal direction of extent of the goods below the goods and a second plane in the longitudinal direction of extent of the goods is provided above the goods. As a result of the division of the gas flow, the flow and thus the heating of the goods are evened out even further.

Weiterhin hat es sich als vorteilhaft erwiesen, wenn die Auslasskanäle in der ersten Ebene im Wesentlichen in Richtung der Ebene der rasterförmigen Gutanordnung sowie in einer im Wesentlichen hierzu senkrechten Ebene vorgesehen sind. Die Wege innerhalb der Auslasskanäle werden hierdurch verkürzt, wodurch die Gasströmung innerhalb der Vorrichtung weiter vergleichmäßigt wird.Furthermore, it has proven to be advantageous if the outlet channels are provided in the first plane essentially in the direction of the plane of the grid-like arrangement of goods and in a plane that is essentially perpendicular thereto. The paths within the outlet channels are thereby shortened, as a result of which the gas flow within the device is further evened out.

Sind die Auslasskanäle in der zweiten Ebene im Wesentlichen in Richtung der Ebene der rasterförmigen Gutanordnung sowie in einer im Wesentlichen hierzu senkrechten Ebene vorgesehen, führt dies zu einer weiteren Vergleichmäßigung der Gasströmung innerhalb der Vorrichtung.Are the outlet channels in the second plane essentially in the direction of the plane of the grid-like arrangement of goods and in a plane that is essentially perpendicular thereto Provided level, this leads to a further equalization of the gas flow within the device.

In einer vorteilhaften Ausführungsform sind die Düsen registerförmig in Reihen in Längsrichtung des Gutes übereinander angeordnet. Dadurch wird auch der zugeführte Gasstrom weiter über die Höhe des Gutes innerhalb der Vorrichtung vergleichmäßigt, was zu einer noch gleichmäßigeren Strömungsbeaufschlagung des Gutes und damit zu einer noch gelichmäßigeren Erwärmung des Gutes beiträgt.In an advantageous embodiment, the nozzles are arranged in register form in rows one above the other in the longitudinal direction of the goods. As a result, the supplied gas flow is also made more uniform over the height of the goods within the device, which contributes to an even more uniform flow of the goods and thus to an even more uniform heating of the goods.

Es hat sich weiterhin als vorteilhaft erwiesen, in der Vorrichtung mindestens einen Steher bereitzustellen, auf dem das Gut aufstellbar ist. Durch das Aufstellen des Gutes auf einen solchen Steher wird die Erwärmung des Gutes auch in dem Bereich, in dem es aufgestellt ist, vergleichmäßigt. Weiterhin ist es vorteilhaft, wenn für jedes Gut ein eigener Steher vorgesehen ist.It has also proven to be advantageous to provide at least one post in the device on which the item can be set up. By placing the item on such a post, the heating of the item is evened out in the area in which it is set up. It is also advantageous if a separate post is provided for each item.

In einer vorteilhaften Ausführungsform ist der Steher in Richtung der Blasrichtung der Düsen durchströmbar.In an advantageous embodiment, the upright can be flowed through in the direction of the blowing direction of the nozzles.

In einer weiteren vorteilhaften Ausführungsform ist der Steher in Richtung im Wesentlichen senkrecht zur Blasrichtung der Düsen durchströmbar. Durch die Durchströmung des Stehers wird die Erwärmung des Gutes weiter vergleichmäßigt. Ist der Steher sowohl in Richtung der Blasrichtung der Düsen als auch im Wesentlichen senkrecht hierzu durchströmbar, wird die Erwärmung des Gutes in besonderem Maße vergleichmäßigt.In a further advantageous embodiment, the upright can be flowed through in a direction essentially perpendicular to the blowing direction of the nozzles. The heating of the goods is evened out by the flow through the upright. If the upright can be flowed through both in the direction of the blowing direction of the nozzles and essentially perpendicular to this, the heating of the goods is particularly evened out.

Ein erfindungsgemäßes Verfahren zur Strömungsbeaufschlagung einer rasterförmigen Gutanordnung mit durchströmbaren Zwischenräumen, wobei ein Gasvolumenstrom das Gut mittels Düsen bebläst, die auf einander gegenüberliegenden Seiten des Gutes versetzt zueinander vorgesehen sind, so dass in den Zwischenräumen eine entsprechend der versetzten Anordnung der Düsen in ihrer Richtung wechselnde Durchströmung entsteht, zeichnet sich dadurch aus, dass der gleiche Gasvolumenstrom, der zugeführt wird, über Auslasskanäle abgeführt wird. Durch die gezielte Abfuhr des eingeblasenen Gasvolumenstroms über Auslasskanäle außerhalb der Ausdehnung des Gutes wird die Gasströmung durch die durchströmbaren Zwischenräume vergleichmäßigt, womit sich auch der Wärmeübergang zwischen Gasstrom und Gut vergleichmäßigt und letztlich die Gleichmäßigkeit der Erwärmung des Guts erhöht wird.A method according to the invention for applying flow to a grid-shaped arrangement of goods with interstices that can be flowed through, wherein a gas volume flow blows the material by means of nozzles which are provided offset from one another on opposite sides of the goods, so that in the interstices a flow that changes in direction according to the staggered arrangement of the nozzles is characterized by the fact that the same gas volume flow that is supplied is discharged via outlet channels. Through the targeted discharge of the blown gas volume flow via outlet channels outside the expansion of the material, the gas flow through the gaps that can be flowed through is evened out, whereby the heat transfer between the gas flow and the good is evened out and ultimately the uniformity of the heating of the good is increased.

Erfindungsgemäß wird der abgeführte Gasvolumenstrom über in zwei Ebenen angeordnete Auslasskanäle abgeführt. Durch die dadurch erfolgende Aufteilung des Gasstroms wird die Strömung und damit die Erwärmung des Gutes noch weiter vergleichmäßigt. Dabei befindet sich die erste Ebene in Längenrichtung des Gutes unterhalb des Gutes, während sich die zweite Ebene in Längenrichtung des Gutes oberhalb des Gutes befindet.According to the invention, the discharged gas volume flow is discharged via outlet channels arranged in two planes. As a result of the division of the gas flow, the flow and thus the heating of the goods are evened out even further. The first level is located below the item in the longitudinal direction of the item, while the second level is located above the item in the longitudinal direction of the item.

Es hat sich als vorteilhaft erwiesen, wenn die durch die erste und die zweite Ebene abgeführten Gasvolumenströme im Verhältnis von circa V˙1 : V˙2 ≈ 1 : 1 mit einer Toleranz von circa ± 15%, mit anderen Worten in einem Verhältnis von V˙1 : V˙2 ≈ 1 : 0,85 bis V˙1 : V˙2 ≈ 1 : 1,15, stehen. Beträgt beispielsweise der zugeführte Gasstrom V˙Zu ca. 160 m3/s, wobei die Zuführgeschwindigkeit vZu ca. 50 m/s beträgt, so wird vorteilhafter Weise über die erste, sich unterhalb des Gutes befindliche Ebene ein Gasvolumenstrom V˙1 von circa 80 m3/s mit einer Strömungsgeschwindigkeit v1 von höchstens circa 15 m/s abgeführt, während über die zweite, sich oberhalb des Gutes befindliche Ebene ein im Wesentlichen gleicher Volumenstrom mit im Wesentlichen gleicher Strömungsgeschwindigkeit v2 abgeführt wird.It has proven to be advantageous if the gas volume flows discharged through the first and the second level in a ratio of approximately V˙ 1 : V˙ 2 ≈ 1: 1 with a tolerance of approximately ± 15%, in other words in a ratio of V. ˙ 1 : V˙ 2 ≈ 1: 0.85 to V˙ 1 : V˙ 2 ≈ 1: 1.15. For example, if the feed gas stream V to about 160 m 3 / s, the feed rate v to about 50 m / s, it is advantageously via the first, is located below the material plane, a gas flow rate v 1 of approximately 80 m 3 / s are discharged at a flow velocity v 1 of at most approx. 15 m / s, while a substantially equal volume flow is discharged with substantially the same flow velocity v 2 via the second level above the goods.

Weitere Vorteile, Besonderheiten und zweckmäßige Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und den nachfolgenden Darstellungen eines bevorzugten Ausführungsbeispiels anhand der Abbildungen.Further advantages, special features and expedient developments of the invention emerge from the subclaims and the following representations of a preferred exemplary embodiment on the basis of the figures.

Die Abbildungen zeigen:

Fig. 1
einen Barren
Fig. 2
eine Prinzipdarstellung einer erfindungsgemäßen Vorrichtung in einer Draufsicht
Fig. 3
eine Prinzipdarstellung eines Ausschnitts einer erfindungsgemäßen Vorrichtung in dreidimensionaler Darstellung.
The pictures show:
Fig. 1
an ingot
Fig. 2
a schematic representation of a device according to the invention in a plan view
Fig. 3
a schematic representation of a section of a device according to the invention in three-dimensional representation.

Fig. 1 zeigt einen Barren 111 mit seinen Abmessungen Höhe H, Breite B und Dicke D. Fig. 1 shows an ingot 111 with its dimensions height H, width B and thickness D.

Fig. 2 zeigt eine Prinzipdarstellung eines erfindungsgemäßen Tiefofens 100 in einer Draufsicht. Die Barren 111 sind in der Ofenkammer 122 so aufgestellt, dass sie in Richtung ihrer Breite B in Reihen nebeneinander stehen, wobei sie eine flächenhafte Gutanordnung 111 bilden. Sowohl in der Ebene der rasterförmigen Gutanordnung 111 als auch in einer senkrechten Richtung hierzu bilden die Barren 111 durchströmbare Zwischenräume 112. Die Ofenkammer 122 selbst ist ebenfalls rechteckig ausgebildet, wobei an ihren Stirnseiten Düsen 120 angeordnet sind, durch die die Barren 111 mit einem Gasstrom beblasen werden. Dabei sind die Düsen 120 auf einander gegenüberliegenden Seiten der Barren 111 versetzt zueinander vorgesehen, so dass in den Zwischenräumen 112 eine entsprechend der versetzten Anordnung der Düsen 120 in ihrer Richtung wechselnde Durchströmung entsteht. Fig. 2 shows a basic representation of a deep furnace 100 according to the invention in a plan view. The bars 111 are set up in the furnace chamber 122 in such a way that they stand in rows next to one another in the direction of their width B, whereby they form a planar arrangement of goods 111. Both in the plane of the grid-like arrangement of goods 111 and in a perpendicular direction thereto, the bars 111 form interstices 112 through which a flow can flow. The furnace chamber 122 itself is also rectangular, with nozzles 120 being arranged on its end faces through which the bars 111 are blown with a gas stream will. In this case, the nozzles 120 are provided offset from one another on opposite sides of the bars 111, so that in the intermediate spaces 112 a throughflow that changes in direction is created in accordance with the offset arrangement of the nozzles 120.

In Fig. 3 ist eine Prinzipdarstellung eines Ausschnitts einer erfindungsgemäßen Vorrichtung in Form eines Tiefofens 100 dreidimensional dargestellt. In dem Tiefofen 100 sind Barren 111 als zu erwärmendes Gut flächenhaft angeordnet, wobei durchströmbare Zwischenräumen zwischen den Barren 111 entstehen. Die Barren 111 weisen einen rechteckigen Querschnitt auf und sind jeweils auf einen Steher 130 aufgesetzt. Über registerförmig übereinander angeordnete Düsen 120 bebläst ein Gasvolumenstrom die Barren 111, wobei die Düsen 120 auf einander gegenüberliegenden Seiten der Barren 111 versetzt zueinander vorgesehen sind, so dass in den Zwischenräumen in Breitenrichtung der Barren eine entsprechend der versetzten Anordnung der Düsen 120 in ihrer Richtung wechselnde Durchströmung entsteht. Auslasskanäle 141, 151 für den Gasvolumenstrom sind in einer ersten Ebene 140 unterhalb der Steher 130 und in einer zweiten Ebene 150 oberhalb der Barren 111 vorgesehen. Durch die gezielte Abfuhr des eingeblasenen Gasvolumenstroms über die Auslasskanäle 141, 151 außerhalb der Ausdehnung der Barren 111 wird die Gasströmung durch die durchströmbaren Zwischenräume vergleichmäßigt, womit sich auch der Wärmeübergang zwischen Gasstrom und Barren 111 vergleichmäßigt und letztlich die Gleichmäßigkeit der Erwärmung der Barren 111 erhöht wird. Die Geschwindigkeit vZu des eingeblasenen Gasstroms sinkt an keiner Stelle unter einen kritischen Wert und Totwassergebiete werden vermieden. Dadurch wird der Wärmeübergang auf die Barren 111 homogenisiert, wodurch Ausgleichszeiten eingespart werden können und somit die erforderliche Verweildauer der Barren 111 in dem Tiefofen 100 minimiert wird.In Fig. 3 a schematic representation of a section of a device according to the invention in the form of a deep furnace 100 is shown three-dimensionally. In the deep furnace 100, bars 111 are arranged over a large area as goods to be heated, with gaps between the bars 111 through which flow can occur. The bars 111 have a rectangular cross section and are each placed on a post 130. A gas volume flow blows the bars 111 via nozzles 120 arranged one above the other in register, the nozzles 120 being provided offset from one another on opposite sides of the bars 111, so that in the gaps in the width direction of the bars the direction of the nozzles 120 changes according to the offset arrangement Flow arises. Outlet channels 141, 151 for the gas volume flow are provided in a first level 140 below the uprights 130 and in a second level 150 above the bars 111. As a result of the targeted discharge of the blown gas volume flow via the outlet channels 141, 151 outside the extent of the bars 111, the gas flow through the interstices through which the flow can flow is evened out, whereby the heat transfer between the gas flow and the bar 111 is evened out and ultimately the uniformity of the heating of the bars 111 is increased . The speed v zu of the blown The gas flow does not drop below a critical value at any point and dead water areas are avoided. As a result, the heat transfer to the bars 111 is homogenized, as a result of which equalization times can be saved and thus the required dwell time of the bars 111 in the deep furnace 100 is minimized.

Der zugeführte Gasvolumenstrom V˙Zu wird über Kammern 122, die sich von der Ofenkammer 110 aus gesehen hinter den Düsen 120 befinden, den Düsen 120 zugeleitet. Dabei wird der durch die registerförmig übereinander angeordneten Düsen 120 geleitete Gasstrom über einen in gleicher Richtung hinter den Düsen 120 vorgesehenen Düsenschutz 121 vergleichmäßigt.The supplied gas volume flow V˙ Zu is fed to the nozzles 120 via chambers 122, which are located behind the nozzles 120 as seen from the furnace chamber 110. The gas flow guided through the nozzles 120, which are arranged one above the other in register, is evened out by means of a nozzle protector 121 provided in the same direction behind the nozzles 120.

Die Auslasskanäle 141, 151 sind so bemessen, dass der gleiche Gasvolumenstrom V˙Zu über die Auslasskanäle 141, 151 abgeführt werden kann, der zugeführt wird. Dadurch wird die Gefahr eines Staus oder einer extremen Beschleunigung des Gasvolumenstroms minimiert, wodurch die Gleichmäßigkeit der Erwärmung der Barren weiter erhöht wird.The outlet channels 141, 151 are dimensioned in such a way that the same gas volume flow V˙ Zu can be discharged via the outlet channels 141, 151 that is supplied. This minimizes the risk of a jam or an extreme acceleration of the gas volume flow, which further increases the uniformity of the heating of the ingots.

Die Steher 130 weisen Strömungskanäle 131 in Blasrichtung der Düsen 120 auf. Durch die Durchströmung auch des Stehers 130 wird die Erwärmung der Barren 111 weiter vergleichmäßigt. Weiterhin weisen die Steher 130 auch im Wesentlichen senkrecht zur Blasrichtung der Düsen 120 Öffnungen 132 auf, durch die ebenfalls Gas strömen kann. Dadurch wird die Erwärmung Barren 111 in besonderem Maße vergleichmäßigt.The uprights 130 have flow channels 131 in the blowing direction of the nozzles 120. As a result of the flow through the upright 130 as well, the heating of the bars 111 is evened out further. Furthermore, the posts 130 also have openings 132 essentially perpendicular to the blowing direction of the nozzles 120, through which gas can likewise flow. As a result, the heating of the ingot 111 is evened out to a particular extent.

Der gesamte Tiefofen ist von einer Isolierung 160 umgeben, wodurch der Energieverbrauch im Betrieb minimiert wird und die Temperaturverteilung in der Ofenkammer 110 homogenisiert wird.The entire deep furnace is surrounded by insulation 160, as a result of which the energy consumption during operation is minimized and the temperature distribution in the furnace chamber 110 is homogenized.

Die Barren 111 weisen einen rechteckigen Querschnitt auf, wobei sie in gleicher Richtung auf die Steher 130 aufgesetzt sind, so dass die durchströmbaren Zwischenräume entstehen. Die Auslasskanäle 141 in der ersten Ebene 140 sowie die Auslasskanäle 151 in der zweiten Ebene 150 sind im Wesentlichen in Richtung der Ebene der längeren Rechteckseite des Querschnitts der Barren 111 sowie in einer im Wesentlichen hierzu senkrechten Ebene vorgesehen. Die Wege innerhalb der Auslasskanäle werden hierdurch verkürzt, wodurch die Gasströmung innerhalb der Vorrichtung weiter vergleichmäßigt wird.The bars 111 have a rectangular cross-section, and they are placed on the posts 130 in the same direction, so that the interstices through which flow can occur. The outlet channels 141 in the first plane 140 and the outlet channels 151 in the second plane 150 are provided essentially in the direction of the plane of the longer rectangular side of the cross section of the bars 111 and in a plane essentially perpendicular thereto. The paths within the exhaust ducts are shortened as a result, as a result of which the gas flow within the device is further evened out.

Die durch die erste Ebene 140 und die zweite Ebene 150 abgeführten Gasvolumenströme stehen im Verhältnis von circa V˙1 : V˙2 ≈ 1 : 1. Der zugeführte Gasstrom V˙Zu beträgt ca. 160 m3/s, wobei die Zuführgeschwindigkeit vZu ca. 50 m/s beträgt. Über die erste, sich unterhalb der Barren 111 befindliche Ebene 140 wird ein Gasvolumenstrom V˙1 von circa 80 m3/s mit einer Strömungsgeschwindigkeit v1 von circa 15 m/s abgeführt, während über die zweite, sich oberhalb der Barren 111 befindliche Ebene 150 ebenfalls circa 80 m3/s Gas mit einer Strömungsgeschwindigkeit v2 von circa 15 m/s abgeführt werden.The gas volume flows discharged through the first level 140 and the second level 150 have a ratio of approximately V˙ 1 : V˙ 2 ≈ 1: 1. The gas flow V˙ Zu is approximately 160 m 3 / s, with the supply speed v Zu is approx. 50 m / s. A gas volume flow V˙ 1 of approximately 80 m 3 / s with a flow velocity v 1 of approximately 15 m / s is discharged via the first level 140 located below the bar 111, while via the second level located above the bar 111 150 likewise about 80 m 3 / s of gas with a flow velocity v 2 of about 15 m / s.

Die hier gezeigte Ausführungsform stellt nur ein Beispiel für die vorliegende Erfindung dar und darf daher nicht einschränkend verstanden werden. Alternative durch den Fachmann in Erwägung gezogene Ausführungsformen sind gleichermaßen vom Schutzbereich der vorliegenden Erfindung umfasst.The embodiment shown here represents only one example of the present invention and should therefore not be understood as restrictive. Alternative embodiments contemplated by those skilled in the art are equally encompassed by the scope of the present invention.

Bezugszeichenliste:List of reference symbols:

100100
Vorrichtung, TiefofenDevice, soaking furnace
110110
OfenkammerFurnace chamber
111111
Gut, Barren, GutanordnungGood, ingots, good arrangement
112112
durchströmbare ZwischenräumeInterstices through which air can flow
120120
Düsejet
121121
DüsenschutzNozzle protection
122122
Kammerchamber
130130
SteherUpright
131131
Strömungskanal durch einen SteherFlow channel through a post
132132
Öffnungopening
140140
erste Ebenefirst floor
141141
Auslasskanal in der ersten EbeneOutlet duct on the first level
150150
zweite Ebenesecond level
151151
Auslasskanal in der zweiten EbeneOutlet duct in the second level
160160
Isolierunginsulation
BB.
BarrenbreiteBar width
DD.
BarrendickeBar thickness
HH
BarrenhöheBar height
V˙ZuV˙zu
zugeführter Gasstromsupplied gas stream
V˙1V˙1
über die erste Ebene abgeführter GasvolumenstromGas volume flow discharged via the first level
V˙11V˙11
über die im Wesentlichen in Richtung der Ebene der rasterförmigen Gutanordnung angeordneten Auslasskanäle in der ersten Ebene abgeführte VolumenstromVia the outlet channels in the first plane, which are arranged essentially in the direction of the plane of the grid-like arrangement of goods
V˙12V˙12
durch die im Wesentlichen senkrecht zu der in Richtung der Ebene der rasterförmigen Gutanordnung angeordneten Auslasskanäle der ersten Ebene abgeführte Volumenstromby the volume flow discharged essentially perpendicular to the outlet channels of the first plane, which are arranged in the direction of the plane of the grid-like arrangement of goods
V˙2V˙2
über die zweite Ebene abgeführter GasvolumenstromGas volume flow discharged via the second level
V˙21V˙21
über die im Wesentlichen in Richtung der Ebene der rasterförmigen Gutanordnung angeordneten Auslasskanäle in der zweiten Ebene abgeführte VolumenstromVolume flow discharged via the outlet channels in the second plane, which are arranged essentially in the direction of the plane of the grid-like arrangement of goods
V˙22V˙22
durch die im Wesentlichen senkrecht zu der in Richtung der Ebene der rasterförmigen Gutanordnung angeordneten Auslasskanäle der zweiten Ebene abgeführte Volumenstromby the volume flow discharged essentially perpendicular to the outlet channels of the second plane which are arranged in the direction of the plane of the grid-like arrangement of goods
vZuvto
Geschwindigkeit des zugeführten GasstromsVelocity of the supplied gas flow
v1v1
Geschwindigkeit des über die erste Ebene abgeführten GasstromsSpeed of the gas flow discharged via the first level
v11v11
Geschwindigkeit des über die im Wesentlichen in Richtung der Ebene der rasterförmigen Gutanordnung angeordneten Auslasskanäle in der ersten Ebene abgeführten GasstromsSpeed of the gas flow discharged in the first plane via the outlet channels arranged essentially in the direction of the plane of the grid-like arrangement of goods
v12v12
Geschwindigkeit des über die im Wesentlichen senkrecht zu der in Richtung der Ebene der rasterförmigen Gutanordnung angeordneten Auslasskanäle in der ersten Ebene abgeführten GasstromsSpeed of the gas flow discharged in the first plane via the outlet channels arranged essentially perpendicularly to the outlet channels arranged in the direction of the plane of the grid-like arrangement of goods
v2v2
Geschwindigkeit des über die zweite Ebene abgeführten GasstromsSpeed of the gas flow discharged via the second level
v21v21
Geschwindigkeit des über die im Wesentlichen in Richtung der Ebene der rasterförmigen Gutanordnung angeordneten Auslasskanäle in der zweiten Ebene abgeführten GasstromsSpeed of the gas flow discharged in the second plane via the outlet channels arranged essentially in the direction of the plane of the grid-like arrangement of goods
v22v22
Geschwindigkeit des über die im Wesentlichen senkrecht zu der in Richtung der Ebene der rasterförmigen Gutanordnung angeordneten Auslasskanäle in der zweiten Ebene abgeführten GasstromsSpeed of the gas flow discharged in the second plane via the outlet channels arranged essentially perpendicularly to the outlet channels arranged in the direction of the plane of the grid-like arrangement of goods

Claims (12)

  1. Device (100) for applying a flow to a grid-like goods arrangement (111) having intermediate spaces which can be flowed through, a gas volume flow blowing the goods (111) by means of nozzles (120) which are provided on opposite sides of the goods (111) so as to be offset from one another, such that a through-flow which changes direction in accordance with the offset arrangement of the nozzles (120) is produced in the intermediate spaces, outlet channels (141, 151) for the gas volume flow being provided in at least one plane (140, 150) outside the extension of the goods (111), characterized in that the goods (111) can be placed on at least one upright (130), and in that the outlet channels (141, 151) are arranged in two planes, of which a first plane (140) is provided below the goods (111) in the longitudinal extension direction of the goods (111) to be placed on the upright (130), and a second plane (150) is provided above the goods (111) in the longitudinal extension direction of the goods (111) to be placed on the upright (130).
  2. Device (100) according to claim 1,
    characterized in that,
    the outlet channels (141, 151) are dimensioned such that the same gas volume flow V̇Zu which is supplied can be discharged via the outlet channels (141, 151).
  3. Device (100) according to either of the preceding claims,
    characterized in that,
    the at least one plane (140, 150) of the outlet channels (141, 151) is provided substantially perpendicularly to the surface of the grid-like goods arrangement (111).
  4. Device (100) according to any of the preceding claims,
    characterized in that,
    the outlet channels (141) in the first plane (140) are provided substantially in the direction of the plane of the grid-like goods arrangement (111) and in a plane which is substantially perpendicular thereto.
  5. Device (100) according to any of the preceding claims,
    characterized in that,
    the outlet channels (151) in the second plane (150) are provided substantially in the direction of the plane of the grid-like goods arrangement (111) and in a plane substantially perpendicular thereto.
  6. Device (100) according to any of the preceding claims,
    characterized in that,
    the nozzles (120) are arranged above one another in register in rows in the longitudinal direction of the goods (111).
  7. Device (100) according to any of the preceding claims,
    characterized in that,
    the upright (130) can be flowed through in the direction of the blowing direction of the nozzles (120).
  8. Device (100) according to any of the preceding claims,
    characterized in that,
    the upright (130) can be flowed through in the direction substantially perpendicular to the blowing direction of the nozzles (120).
  9. Method for applying a flow to a grid-like goods arrangement (111) having intermediate spaces which can be flowed through, a gas volume flow blowing the goods by means of nozzles (120) which are provided on opposite sides of the goods (111) so as to be offset from one another, such that a through-flow which changes direction in accordance with the offset arrangement of the nozzles (120) is produced in the intermediate spaces, characterized in that,
    the same gas volume flow V̇ Zu which is supplied is discharged via outlet channels (141, 151), and in that the outlet channels (141, 151) are arranged in two planes, of which a first plane (140) is provided below the goods (111) in the longitudinal extension direction of the goods (111) and a second plane (150) is provided above the goods (111) in the longitudinal extension direction of the goods (111).
  10. Method according to claim 9,
    characterized in that,
    the gas volume flows discharged through the first and second plane (140, 150) are in a ratio of approximately 1:0.85 to approximately 1:1.15, in particular in a ratio of approximately 1:1.
  11. Method according to either claim 9 or claim 10,
    characterized in that,
    the volume flow V̇ 11 discharged via the outlet channels (141) arranged substantially in the direction of the plane of the grid-like goods arrangement (111) in the first plane (140) is substantially the same as the volume flow V̇ 12 discharged through the outlet channels (141) of the first plane (140) that are arranged substantially perpendicularly to the direction of the plane of the grid-like goods arrangement (111).
  12. Method according to any of claims 9 to 11,
    characterized in that,
    the volume flow V̇ 21 discharged via the outlet channels (151) arranged substantially in the direction of the plane of the grid-like goods arrangement (111) in the second plane (150) is substantially the same as the volume flow V̇ 22 discharged through the outlet channels (151) of the second plane (150) that are arranged substantially perpendicularly to the direction of the plane of the grid-like goods arrangement (111).
EP14169078.4A 2014-05-20 2014-05-20 Flow application device Active EP2947161B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP14169078.4A EP2947161B1 (en) 2014-05-20 2014-05-20 Flow application device
PL14169078T PL2947161T3 (en) 2014-05-20 2014-05-20 Flow application device
ES14169078T ES2893427T3 (en) 2014-05-20 2014-05-20 Flow Application Device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14169078.4A EP2947161B1 (en) 2014-05-20 2014-05-20 Flow application device

Publications (2)

Publication Number Publication Date
EP2947161A1 EP2947161A1 (en) 2015-11-25
EP2947161B1 true EP2947161B1 (en) 2021-08-18

Family

ID=50732927

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14169078.4A Active EP2947161B1 (en) 2014-05-20 2014-05-20 Flow application device

Country Status (3)

Country Link
EP (1) EP2947161B1 (en)
ES (1) ES2893427T3 (en)
PL (1) PL2947161T3 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07813B2 (en) * 1985-11-13 1995-01-11 石川島播磨重工業株式会社 Annealing furnace
DE3710901A1 (en) * 1987-03-12 1988-09-29 Kramer Carl DEVICE FOR FLOWING ON SURFACE-GOOD GOODS IN ARRANGEMENT WITH FLOW-ROWING SPACES
JPH07268450A (en) * 1994-03-28 1995-10-17 Tokyo Gas Co Ltd Heating device
DE202004018563U1 (en) * 2004-12-01 2005-01-27 Ebner, Peter, Dipl.-Ing. Bell-type annealing furnace for heat treatment comprises hood connected to protective gas flow, preferably collecting chamber, suctioned from protective hood using radial fan

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
ES2893427T3 (en) 2022-02-09
PL2947161T3 (en) 2022-01-10
EP2947161A1 (en) 2015-11-25

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