EP0283869A2 - Device to expose to a gas stream objects with flat surfaces in a position which can be traversed - Google Patents

Device to expose to a gas stream objects with flat surfaces in a position which can be traversed Download PDF

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Publication number
EP0283869A2
EP0283869A2 EP88103834A EP88103834A EP0283869A2 EP 0283869 A2 EP0283869 A2 EP 0283869A2 EP 88103834 A EP88103834 A EP 88103834A EP 88103834 A EP88103834 A EP 88103834A EP 0283869 A2 EP0283869 A2 EP 0283869A2
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EP
European Patent Office
Prior art keywords
flow
blow
nozzles
channels
stack
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP88103834A
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German (de)
French (fr)
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EP0283869A3 (en
EP0283869B1 (en
Inventor
Carl Prof. Dr.-Ing. Cramer
Reinhard Prof. Dr.-Ing. Grundmann
Bernhard Dipl.-Ing. Hilge
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3A Composites International AG
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Alusuisse Lonza Services Ltd
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Publication date
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Priority to AT88103834T priority Critical patent/ATE78581T1/en
Publication of EP0283869A2 publication Critical patent/EP0283869A2/en
Publication of EP0283869A3 publication Critical patent/EP0283869A3/en
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Publication of EP0283869B1 publication Critical patent/EP0283869B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • 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
    • 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
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/06—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated
    • F27B9/10—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated heated by hot air or gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/22—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace on rails, e.g. under the action of scrapers or pushers
    • 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

Definitions

  • the invention relates to a device for the flow application of flat material in an arrangement with flowable spaces between the type specified in the preamble of claim 1.
  • Areal goods are understood to mean, in particular, plates, laminated cores, ingots and sheets which are produced from metallic, but also from non-metallic materials, for example from ceramics.
  • These areal goods can either be arranged in stacks with clear spaces between them or in the form of rows, i.e. the two-dimensional goods are arranged vertically next to each other.
  • flat goods also includes layers of bars, profiles or narrow bars or stacks of baskets which are filled with bulk goods or small good parts.
  • the goods to be treated form at least one horizontal position or can be positioned vertically with a small width dimension relative to the height and have spaces that can be flowed through.
  • 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 leads to frequent malfunctions or even business interruptions.
  • axial fans Another disadvantage of axial fans is that they usually have to be installed in a wall in high-temperature systems for storage reasons. This asymmetrical installation results in different outputs for the two directions of rotation of the fan wheel despite its corresponding adaptation and design. The differences in the heat transfer due 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.
  • the invention is therefore based on the object of providing a device for the flow application of flat material of the type specified, in which the disadvantages mentioned above do not occur.
  • the advantages achieved with the invention are based on the fact that the reversing effect required for uniform flow application of the stack of a flat material or the series of flat material elements is achieved by a suitable design of the flow drive and flow guidance. Because with the blow-out channels or nozzles arranged offset on both sides of the stack of goods or the series of goods, the material is conveyed over relatively narrow zones with different flow directions, that is to say in the Countercurrent. In this way, the same effect results as in a reversing system, without the flow direction having to be reversed. This effect can be enhanced by moving the stack of goods back and forth during the blowing in the longitudinal direction, that is to say perpendicular to the blowing devices. Since the stack of goods is introduced into the device in the same direction, the charging device, which is generally present anyway, is suitable for this, at most with a small modification.
  • the "universal blow chamber” constructed in this way can be operated with particularly high gas capacity flows because of its favorable flow design, which means that a uniform temperature can be achieved in the material to be heated, for example in heat treatment systems; moreover, the residence time of the goods can be shortened and the efficiency of the entire system can be increased, so that overall the operating costs are reduced. And finally, the inner housing can be constructed in a simple manner from many identical parts, so that a particularly cost-effective production is possible.
  • four bars 12 arranged one above the other to form a stack in the case illustrated by way of example are to be formed by means of suitable spacers, e.g. simple square profiles, kept at a distance, are acted upon by a gas flow for the purpose of heat treatment.
  • a radial fan 14 is arranged vertically above the stack of bars 12 and conveys its volume flow into a housing 16 which blows out on two sides. From this housing 16, which opens into a collecting channel or box 17 on each blow-out side, blow-out channels 18 are supplied which are offset from one another on the two sides of the stack from the bars 12. In the embodiment shown, two blow-out channels 18 are provided on each side of the stack of goods, the other half of the housing 16 with the blow-out channels 18 being arranged in a rotationally symmetrical manner as shown in FIG. 2.
  • each return flow space 20 has a blow-out channel 18 in the center on the other side of the stack of goods 12.
  • the treatment gas which has passed through the intermediate spaces between the layers of the material stack 12 (see FIG. 1, where the direction of flow is indicated by the arrows), is removed from the treatment space and fed to the suction space 22 of the radial fan 14 through the return flow spaces 20.
  • blow-out ducts 18, which serve as inflow ducts, are dimensioned such that a uniform inflow velocity is achieved over the entire duct length, that is to say over the entire height of the stack of goods 12.
  • blow-out channels 18 are provided with a strong side contraction, for example in accordance with a Borda inlet, as shown in FIG. when the outlet cross section of the blow-out channels 18 tapers suddenly in the flow direction. This allows the otherwise occurring expansion of the emerging jet during inflation to be limited to the long sides of the material, that is to say the bars 12.
  • the treatment gas flows downward from the radial fan 14 arranged vertically above the stack of goods 12, then through the outlet ducts into the spaces 13 between individual bars 12 of the stack and finally on the opposite side through the backflow spaces 20 back into the suction chamber 22 of the radial fan 14, so that, as is customary in systems of this type, a closed circuit results.
  • Heating or cooling devices for the circulated gas stream can either in the collecting channels 17 or at the ends of the two-way blowing fan housing 16 on the fan pressure side or in the suction chamber 22 on the fan suction side. Such devices are not shown in the figures since their embodiment is generally known.
  • FIG. 5 shows a cross section through such a device, with bars 32 placed on edge on a suitable support or transport construction, indicated by the I-profiles 40, forming a good series and therefore appearing in the figure in plan view as a rectangular area.
  • the spatial arrangement of the bars 32 can be seen in particular from FIG. 7, in which the gaps 33 between the bars forming the good row 32 are also shown.
  • the gaps are formed, for example, by placing the bars in the middle of so-called shoes, designated 40 in FIGS will.
  • a flow channel 35 supplies three rows of nozzles 34 aligned with three adjacent gaps 33. Between the flow channels 35, large spaces are created due to the curved or cranked shape of the outer nozzle tubes 36 b.
  • the nozzles 34 are arranged offset on the upper flow channel 35 a and the lower flow channel opposite this net, so that the gaps in question are mutually partially flowed through from above and partly from below.
  • a fan can be provided to supply only one pair of flow channels 35 a and 35 b, or several pairs.
  • the gas flow takes place in a closed circuit, as shown with the schematic flow arrows in FIG.
  • the arrangement of heating or cooling devices the same basic considerations apply as for the previously described embodiment of the device for the flow loading of material stacks.
  • a further equalization of the flow loading can be achieved in that the flat material, in particular a stack of goods, is moved back and forth in an oscillating movement in the direction of its horizontal longitudinal axis during the blowing; the amplitude of this back and forth movement is adjusted so that it corresponds to the division of the blowing device, for example the blowing device 18 in the embodiment according to FIGS. 1 to 4.
  • the intermediate layers or spacers or the transverse frame supports in the described embodiments should also be matched to the division of the blowing device in order to achieve a very homogeneous flow admission.
  • the mutually directed gas flows in the interstices of the good locations can thereby be largely distinguished from one another, since mixing with the opposing neighboring flows is largely avoided; this in turn allows the flow velocity in the channel formed in this way, viewed in the direction of flow, to be maintained longer.
  • FIG. 9a shows two views of a stack of plates, ingots and sheets, the individual, horizontal layers being separated from one another by intermediate layers and thereby forming intermediate spaces, as can be seen in the illustration on the right.
  • FIG. 9b shows a stack of goods, in which the three upper layers are formed by bolts and rods and the lower layer by narrow bars. This position is held by mutually supported frames, which are shown in the right view of Figure 9b without the good.
  • FIG. 9c finally shows several horizontal layers formed by baskets which are stacked on top of one another; these baskets are filled with bulk goods or small parts.
  • the horizontal layers are also arranged so that there are gaps between the individual basket layers.
  • These stacks can e.g. B. be built on a charging device 50 shown in FIG. 10 in the manner of a bogie and be driven into the device with this. With the help of appropriate facilities, e.g. Hydraulic cylinders 51, which are arranged on one or both end faces of the device 10, the material stack 12 is moved back and forth between the two end positions 19a and 19b covering the division of the blow box 18.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Drying Of Solid Materials (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Tunnel Furnaces (AREA)
  • Furnace Details (AREA)
  • Meat, Egg Or Seafood Products (AREA)

Abstract

A device for acting upon a stack of a laminar objects or a row of laminar object elements with a fluid stream, in particular a gas stream, such as can be used for heat treatment of laminar objects with a large width extent of the stack in relation to the height of the individual object layers, or of a row of object elements which are high in relation to their thickness, has a radial fan, arranged above the object stack or the object row, with a housing blowing out on two sides, which housing supplies blow-out channels, which are arranged in each case at the sides of the object stack and staggered in relation to one another, or flow channels which are situated above and below the object row and equipped with nozzles arranged in a staggered manner. The volume flow supplied from the radial fan is thus blown alternately against the corresponding part of the side surface of the object stack and thus also through the intermediate spaces, between the individual layers of the object stack, contained in this side surface, or, in the case of the object row, alternately from above and below into the gaps between the object elements, as a result of which uniform action upon the object stack from both sides and in the case of the object row from above and below is achieved, which would otherwise only be possible by reversing the flow. <IMAGE>

Description



Die Erfindung betrifft eine Vorrichtung zur Strömungsbeaufschlagung von flächenhaftem Gut in Anordnung mit durchströmbaren Zwischenräumen der im Oberbegriff des Anspruchs 1 angegebenen Gattung.The invention relates to a device for the flow application of flat material in an arrangement with flowable spaces between the type specified in the preamble of claim 1.

Unter "flächenhaften Gütern" werden insbesondere Platten, Blechpakete, Barren und Tafeln verstanden, die aus metallischen, aber auch aus nicht-me­tallischen Werkstoffen, bspw. aus Keramik, hergestellt werden."Areal goods" are understood to mean, in particular, plates, laminated cores, ingots and sheets which are produced from metallic, but also from non-metallic materials, for example from ceramics.

Diese flächenhaften Güter können entweder in Stapeln mit durchströmbaren Zwischenräumen oder in Form von Reihungen angeordnet werden, d.h. die flä­chenhaften Güter werden senkrecht im Abstand nebeneinander angeordnet.These areal goods can either be arranged in stacks with clear spaces between them or in the form of rows, i.e. the two-dimensional goods are arranged vertically next to each other.

Außerdem fallen unter den Begriff "flächenhafte Güter" auch Lagen von Stan­gen, Profilen oder schmalen Barren owie Stapel von Körben, die mit Schütt­gut oder kleinen Gutteilen gefüllt sind.In addition, the term "flat goods" also includes layers of bars, profiles or narrow bars or stacks of baskets which are filled with bulk goods or small good parts.

Wesentlich ist also nur, daß die zu behandelnden Güter minestens eine hori­zontale Lage bilden oder mit relativ zur Höhe kleiner Breitenabmessung vertikal gestellt werden können und durchströmbare Zwischenräume aufweisen.It is therefore only essential that the goods to be treated form at least one horizontal position or can be positioned vertically with a small width dimension relative to the height and have spaces that can be flowed through.

Zur Wärmebehandlung von flächenhaften Gütern, die in breiten Lagen zu Sta­peln oder Reihungen angeordnet sind, werden üblicherweise Anlagen verwendet, bei denen mittels eines geeigneten Strömungsantriebs ein Gasstrom durch den Stapel oder die Reihung hindurch gefördert wird. Um bei dieser Art der Strömungsbeaufschlagung Unsymmetrien in der Wärmebehandlung, insbesondere durch Voreilen der Temperatur auf der Eintrittsseite der Strömung gegenüber der Temperatur auf der Austrittsseite, zu unterdrücken, sind solche Anlagen üblicherweise mit reversierfähigen Strömungsantrieben, also Antrieben mit umkehrbarer Strömungsrichtung, oder mit komplizierten Klappensteuerungen zur Umkehr der Strömungsrichtung versehen.For the heat treatment of flat goods which are arranged in stacks or rows in broad layers, systems are usually used in which a gas flow is conveyed through the stack or the row by means of a suitable flow drive. In order to suppress asymmetries in heat treatment with this type of flow application, in particular by leading the temperature on the inlet side of the flow compared to the temperature on the outlet side, such systems are usually equipped with reversible flow drives, i.e. drives with reversible flow direction, or with complicated flap controls for Reverse flow direction.

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.However, 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 leads to frequent malfunctions or even business interruptions.

Als praktikabler reversierbarer Strömungantrieb 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 Wider­ ständen, wie sie gerade bei einem breiten Stapel aus flächenhaften Gut-Lagen oder im Vergleich zur Breite der Lücken hohen Gut-Reihungen auftreten, die erreichbaren Druckzahlen für eine wirksame Durchströmung viel zu gering sind.As a practicable reversible flow drive, there is only one axial fan with appropriately selected blading available, 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, in particular at high temperatures. Therefore, axial fans are only suitable for flow circuits with relatively low resistances, while with higher resistances If, as is the case with a wide stack of two-dimensional layers of good or high rows of good compared to the width of the gaps, the achievable pressure figures are far too low for an effective flow.

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 längere Be­handlungszeiten führen jedoch zu erhöhten Betriebs- und damit Herstellungs­kosten, so daß in aller Regel angestrebt wird, die Behandlungszeiten zu verkürzen.Another disadvantage of axial fans is that they usually have to be installed in a wall in high-temperature systems for storage reasons. This asymmetrical installation results in different outputs for the two directions of rotation of the fan wheel despite its corresponding adaptation and design. The differences in the heat transfer due 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.

Der Erfindung liegt deshalb die Aufgabe zugrunde, eine Vorrichtung zur Strö­mungsbeaufschlagung von flächenhaftem Gut der angegebenen Gattung zu schaffen, bei der die oben erwähnten Nachteile nicht auftreten.The invention is therefore based on the object of providing a device for the flow application of flat material of the type specified, in which the disadvantages mentioned above do not occur.

Insbesondere soll eine Vorrichtung vorgeschlagen werden, die auf kon­struktiv einfache Weise die gleichmäßige Strömungsbeaufschlagung des Gutes gewährleitet.In particular, a device is to be proposed that ensures the uniform flow of the material in a structurally simple manner.

Dies wird erfindungsgemäß durch die im kennzeichnenden Teil des Anpruchs 1 angegebenen Merkmale erreicht.This is achieved according to the invention by the features specified in the characterizing part of claim 1.

Zweckmäßige Ausführungsformen werden durch die Merkmale der Unteransprüche definiert.Appropriate embodiments are defined by the features of the subclaims.

Die mit der Erfindung erzielten Vorteile beruhen darauf, daß der zur gleich­mäßigen Strömungsbeaufschlagung des Stapels eines flächenhaften Gutes oder der Reihung flächenhafter Gutelemente erforderliche Reversiereffekt durch eine geeignete Ausgestaltung von Strömungsantrieb und Strömungsführung erzielt wird. Denn mit den versetzt zu beiden Seiten des Gut-Stapels oder der Gut-Reihung angeordneten Ausblasekanälen oder 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. Dieser Effekt kann noch dadurch versträrkt werden, daß der Gut­stapel während der Beblasung in Längsrichtung, also senkrecht zu den Bebla­sungseinrichtungen, hin- und herbewegt wird. Da der Gutstapel in der glei­chen Richtung in die Vorrichtung eingebracht wird, eignet sich, allenfalls mit kleinen Modifikation, hierzu die in der Regel ohnehin vorhandene Chargiervorrichtung.The advantages achieved with the invention are based on the fact that the reversing effect required for uniform flow application of the stack of a flat material or the series of flat material elements is achieved by a suitable design of the flow drive and flow guidance. Because with the blow-out channels or nozzles arranged offset on both sides of the stack of goods or the series of goods, the material is conveyed over relatively narrow zones with different flow directions, that is to say in the Countercurrent. In this way, the same effect results as in a reversing system, without the flow direction having to be reversed. This effect can be enhanced by moving the stack of goods back and forth during the blowing in the longitudinal direction, that is to say perpendicular to the blowing devices. Since the stack of goods is introduced into the device in the same direction, the charging device, which is generally present anyway, is suitable for this, at most with a small modification.

Durch den Fortfall der Notwendigkeit eine Strömungsreversierung ist die Verwendung von Radialventilatoren möglich, wodurch sich die mit Axialventi­latoren verbundenen, oben erläuterten Nachteile vermeiden lassen.By eliminating the need for a flow reversal, the use of radial fans is possible, as a result of which the disadvantages explained above associated with axial fans can be avoided.

Die so aufgebaute "Universalblaskammer" kann wegen ihrer strömungstechnisch günstigen Gestaltung mit besonders hohen Gas-Kapazitätsströmen betrieben werden, wodurch sich, bspw. bei Wärmebehandlungsanlagen, eine gleichmäßige Temperatur im Wärmgut erzielen läßt; außerdem kann dadurch die Verweilzeit des Gutes abgekürzt und damit der Wirkungsgrad der Gesamtanlage erhöht wer­den, so daß sich insgesamt eine Senkung der Betriebskosten ergibt. Und schließlich läßt sich das Innengehäuse in einfacher Weise aus vielen, gleichartigen Teilen aufbauen, so daß eine besonders kostengünstige Ferti­gung möglich ist.The "universal blow chamber" constructed in this way can be operated with particularly high gas capacity flows because of its favorable flow design, which means that a uniform temperature can be achieved in the material to be heated, for example in heat treatment systems; moreover, the residence time of the goods can be shortened and the efficiency of the entire system can be increased, so that overall the operating costs are reduced. And finally, the inner housing can be constructed in a simple manner from many identical parts, so that a particularly cost-effective production is possible.

Die Erfindung wird im folgenden anhand von je einem Ausführungsbeispiel einer Vorrichtung zur Strömungsbeaufschlagung eines Gut-Stapels und einer Vorrichtung zur Strömungsbeaufschagung einer Gut-Reihung unter Bezugnahme auf die beiliegenden, schematischen Zeichnungen näher erläutert. Es zeigen

  • Fig. 1 einen Querschnitt durch eine Vorrichtung zur Beaufschlagung eines Stapels eines flächenhaften Gutes mit einer Gas-Strömung,
  • Fig. 2 einen Horizontalschnitt durch die Vorrichtung nach Figur 1 entlang der in Figur 1 eingetragenen Schnittebene B-B
  • Fig. 3 einen Vertikalschnitt durch einen Ausblaskanal nach Figur 1 in vergrößertem Maßstab
  • Fig. 4 einen horizontalen Schnitt durch einen Ausblaskanal der Vor­richtung nach Figur 1 in vergrößertem Maßstab
  • Fig. 5 einen Querschnitt einer Vorrichtung zur Strömungsbeaufschlagung von hochkant gestellten Barren,
  • Fig. 6 einen Horizontalschnitt durch die Vorrichtung nach Figur 5 längs der in dieser Figur eingetragenen, an der Mittellinie hori­zontal versetzten Schnittlinie A-A,
  • Fig. 7 einen Längsmittelschnitt durch die Vorrichtung nach Figur 5,
  • Fig. 8 im vergrößerten Maßstab einen Querschnitt durch einen Strömungs­kanal der Vorrichtung nach Figur 5 mit aufgesetzten Düsenrohren,und
  • Fig. 9 verschiedene Anordnungen von flächenhaften Gütern.
  • Fig. 10 die schematische Darstellung einer Vorrichtung gemäß Figur 1 mit einer Einrichtung zum Hin- und Herbewegen des Gut-Stapels während der Beblasung.
The invention is explained in more detail below with the aid of an exemplary embodiment of a device for the flow application of a stack of goods and a device for the flow application of a series of goods with reference to the accompanying schematic drawings. Show it
  • 1 shows a cross section through a device for applying a gas flow to a stack of a flat good,
  • 2 shows a horizontal section through the device according to FIG. 1 along the section plane BB entered in FIG. 1
  • 3 shows a vertical section through a blow-out duct according to FIG. 1 on an enlarged scale
  • 4 shows a horizontal section through a blow-out duct of the device according to FIG. 1 on an enlarged scale
  • 5 shows a cross section of a device for the flow application of bars placed on edge,
  • 6 shows a horizontal section through the device according to FIG. 5 along the section line AA entered in this figure and horizontally offset at the center line, FIG.
  • 7 shows a longitudinal central section through the device according to FIG. 5,
  • Fig. 8 on an enlarged scale a cross section through a flow channel of the device of Figure 5 with nozzle pipes attached, and
  • Fig. 9 different arrangements of areal goods.
  • 10 shows the schematic representation of a device according to FIG. 1 with a device for moving the stack of goods back and forth during the blowing.

Mit der aus den Figuren 1 und 2 ersichtlichen, insgesamt durch das Bezugs­zeichen 10 angedeuteten Vorrichtung sollen in dem beispielhaft dargestellten Fall vier zu einem Stapel übereinander angeordnete Barren 12, die mittels geeigneter Abstandshalter, z.B. einfacher Vierkantprofile, auf Distanz ge­halten werden, durch einen Gasstrom zum Zwecke der Wärmebehandlung beauf­schlagt werden.With the device shown in FIGS. 1 and 2, indicated overall by reference numeral 10, four bars 12 arranged one above the other to form a stack in the case illustrated by way of example are to be formed by means of suitable spacers, e.g. simple square profiles, kept at a distance, are acted upon by a gas flow for the purpose of heat treatment.

Lotrecht über dem Stapel von Barren 12 ist ein Radialventilator 14 ange­ordnet, der seinen Volumenstrom in ein zweiseitig ausblasendes Gehäuse 16 fördert. Von diesem Gehäuse 16, das auf jeder Ausblaseseite in einen Sammel­kanal oder -kasten 17 mündet, werden Ausblaskanäle 18 versorgt, die auf den beiden Seiten des Stapels aus den Barren 12 einander versetzt gegenüberlie­gen. Bei der dargestellten Ausführungsform sind auf jeder Seite des Gutsta­pels zwei Ausblaskanäle 18 vorgesehen, wobei gemäß der Darstellung in Figur 2 die andere Hälfte des Gehäuses 16 mit den Ausblaskanälen 18 drehsymme­trisch hierzu angeordnet ist.A radial fan 14 is arranged vertically above the stack of bars 12 and conveys its volume flow into a housing 16 which blows out on two sides. From this housing 16, which opens into a collecting channel or box 17 on each blow-out side, blow-out channels 18 are supplied which are offset from one another on the two sides of the stack from the bars 12. In the embodiment shown, two blow-out channels 18 are provided on each side of the stack of goods, the other half of the housing 16 with the blow-out channels 18 being arranged in a rotationally symmetrical manner as shown in FIG. 2.

Zwischen den beiden Ausblaskanälen 18 liegen Rückströmräume 20, die räum­lich so angeordnet sind, daß jedem Rückstromraum 20 ein Ausblaskanal 18 mittig auf der anderen Seite des Gut-Stapels 12 gegenüber liegt. Durch die Rückströmräume 20 wird das Behandlungsgas, das die Zwischenräume zwischen den Schichten des Gut-Stapels 12 (siehe Figur 1, wo die Strömungsrichtung durch die Pfeile angedeutet ist) passiert hat, aus den Behandlungsraum ab- und dem Ausaugraum 22 des Radialventilators 14 zugeführt.Between the two blow-out channels 18 there are return flow spaces 20 which are spatially arranged in such a way that each return flow space 20 has a blow-out channel 18 in the center on the other side of the stack of goods 12. The treatment gas, which has passed through the intermediate spaces between the layers of the material stack 12 (see FIG. 1, where the direction of flow is indicated by the arrows), is removed from the treatment space and fed to the suction space 22 of the radial fan 14 through the return flow spaces 20.

Die als Zuströmkanäle dienenen Ausblaskanäle 18 sind derart dimensioniert, daß über die gesamte Kanallänge, also über die gesamte Höhe des Gut-Stapels 12, eine gleichmäßige Anströmgeschwindigkeit erzielt wird. Hierzu dient in vorteilhafter Weise das im Ausblasquerschnitt der Ausblaskanäle 18 angeord­nete Umlenkgitter 19, das in Figur 3 vergrößert dargestellt ist und die Strömungsumlenkung insbesondere durch den infolge des Coanda-Effekts an den Außenflächen der zylindrischen Leitschaufeln 23 entstehenden Unterdruck bewirkt.The blow-out ducts 18, which serve as inflow ducts, are dimensioned such that a uniform inflow velocity is achieved over the entire duct length, that is to say over the entire height of the stack of goods 12. The deflecting grille 19 arranged in the blow-out cross section of the blow-out channels 18, which is shown enlarged in FIG. 3 and which causes the flow deflection in particular due to the negative pressure which arises on the outer surfaces of the cylindrical guide vanes 23 as a result of the Coanda effect, advantageously serves this purpose.

In Abhängigkeit von der Beschaffenheit des Gut-Stapels 12 kann es zweckmä­ßig sein, wenn die Ausblaskanäle 18 entsprechend der Darstellung in Figur 4 mit einer starken Seitenkontraktion, bspw. entsprechend einem Borda-Ein­lauf, versehen sind, d.h. wenn der Auslaßquerschnitt der Ausblaskanäle 18 sich in Strömungsrichtung sprunghaft verjüngt. Dadurch läßt sich die sonst auftretende Aufweitung des austretenden Strahls beim Aufblasen auf die langen Seiten des Gutes, also der Barren 12, begrenzen.Depending on the nature of the material stack 12, it may be expedient if the blow-out channels 18 are provided with a strong side contraction, for example in accordance with a Borda inlet, as shown in FIG. when the outlet cross section of the blow-out channels 18 tapers suddenly in the flow direction. This allows the otherwise occurring expansion of the emerging jet during inflation to be limited to the long sides of the material, that is to say the bars 12.

Wie man insbesondere au Figur 2 erkennt, strömt das Behandlungsgas von dem lotrecht über dem Gut-Stapel 12 angeordneten Radialventilator 14 nach unten, dann durch die Aublaskanäle in die Zwischenräume 13 zwischen en einzelnen Barren 12 des Stapels und schließlich auf der gegenüberliegenden Seite durch die Rückströmräume 20 in den Ansaugraum 22 des Radialventilators 14 zurück, so daß sich, wie in derartigen Anlagen üblich, ein geschlossener Kreislauf ergibt. Heiz- oder Kühleinrichtungen für den im Kreislauf umge­wälzten Gasstrom können entweder in den Sammelkanälen 17 bzw. an den Enden des zweiseitig ausblasenden Ventilatorgehäuses 16 auf der Ventilatordruck­seite oder im Ansaugraum 22 auf der Ventilatorsaugseite angeordnet werden. Derartige Einrichtungen sind, da in ihrer Ausführungsform allgemein bekannt, in den Figuren nicht dargestellt.As can be seen in particular from FIG. 2, the treatment gas flows downward from the radial fan 14 arranged vertically above the stack of goods 12, then through the outlet ducts into the spaces 13 between individual bars 12 of the stack and finally on the opposite side through the backflow spaces 20 back into the suction chamber 22 of the radial fan 14, so that, as is customary in systems of this type, a closed circuit results. Heating or cooling devices for the circulated gas stream can either in the collecting channels 17 or at the ends of the two-way blowing fan housing 16 on the fan pressure side or in the suction chamber 22 on the fan suction side. Such devices are not shown in the figures since their embodiment is generally known.

Bei der Beschreibung einer beispielhaften Ausführungsform einer Vorrichtung zur Strömungsbeaufschlagung einer Gutreihung wird auch wieder vom Anwen­dungsfall der Wärmebehandlung von Barren, z. B. in der Leichmetallindu­strie, ausgegangen. Figur 5 zeigt einen Querschnitt durch eine solche Vor­richtung, wobei hochkant gestellte Barren 32 auf einer geeigneten Stütz- oder Transport-Konstruktion, angedeutet durch die I-Profile 40, eine Gut-­Reihung bilden und daher in der Figur in der Draufsicht als Rechteckfläche erscheinen. Die räumliche Anordnung der Barren 32 ist insbesondere aus Fi­gur 7 ersichtlich, in der auch die Lücken 33 zwischen den die Gut-Reihung 32 bildenden Barren dargestellt sind.In the description of an exemplary embodiment of a device for the flow application of a series, the application of the heat treatment of bars, e.g. B. in the light metal industry. FIG. 5 shows a cross section through such a device, with bars 32 placed on edge on a suitable support or transport construction, indicated by the I-profiles 40, forming a good series and therefore appearing in the figure in plan view as a rectangular area. The spatial arrangement of the bars 32 can be seen in particular from FIG. 7, in which the gaps 33 between the bars forming the good row 32 are also shown.

Bei einer Vorrichtung, durch welche die Barren 32 auf Transportschienen 40 gestoßen werden, also einem sogenannten "Stoßofen" wird die Bildung der Lücken z.B. dadurch erreicht, daß die Barren jeweils mittig auf sogenannten Schuhen, in den Figuren 5 und 7 mit 40 bezeichnet, aufgestellt werden. Die Länge der dicht aneinander anliegenden Schuhe, die auf den als Schienen dienenden Profilen 40 durch den Ofen gestoßen werden, bestimmt die Teilung der Reihung und die Lückenbreite ergibt sich aus: Teilung minus Barrendicke. Da die Transportbewegung je Stoßvorgang immer um die gleiche Schuhlänge fortschrei­tet, bleibt die Lage der Lücken im Ofen immer die gleiche. Daher können Strömungskanäle 35 a oberhalb und 35 b unterhalb der Gut-Reihung angeordnet werden, an denen auf die Lücken 33 ausgerichtete Düsen 34 befestigt sind. Im in den Figuren 5 bis 8 dargestellten Beispiel versorgt ein Strömungskanal 35 jeweils drei auf drei benachbarte Lücken 33 ausgerichtete Reihen von Düsen 34. Zwischen den Strömungskanälen 35 entstehen folglich bedingt durch die gebogene oder gekröpfte Form der jeweils äußeren Düsenrohre 36 b groß dimen­sionierte Freiräume. Die Düsen 34 sind am oberen Strömungskanal 35 a und dem diesem gegenüberliegenden unteren Strömungskanal jeweils versetzt angeord­ net, so daß die betreffenden Lücken wechselseitig teilweise von oben und teilweise von unten durchströmt werden. Bei einer Vorrichtung mit Trans­port des Gutes, wie oben beschrieben, empfiehlt es sich, die Düsen zusätz­lich von Strömungskanalpaar zu Strömungskanalpaar zu versetzen, weil sich dann in Verbindung mit der Gutbewegung ein weiterer, der Vergleichmäßigung dienender Beaufschlagungswechsel ergibt. Diese Anordnung ist in Figur 6 im rechten Halbschnitt für die zwei Düsengruppierungen 35 aa und 35 ab der beiden oberen Strömungskanäle gezeigt. Es kann aber auch bei Vorrichtungen mit dem beschriebenen Stoß-Transport des Gutes zweckmäßig sein, die Strö­mungsrichtung in einer Lücke jeweils gleich,aber von Lücke zu Lücke unter­schiedlich zu wählen. Dies ist insbesondere dann vorteilhaft, wenn bei innerhalb einer Lücke wechselnder Strömungsrichtung bei relativ zur Lücken­breite langen Strömungswegen zu starke Vermischung zwischen gegengerichteten Strömen auftreten würde. Je nach Gestaltung der Vorrichtung kann ein Venti­lator zur Versorgung nur eines Strömungskanalpaares 35 a und 35 b oder auch mehrere Paare vorgesehen werden.In the case of a device through which the bars 32 are pushed onto transport rails 40, that is to say a so-called "push furnace", the gaps are formed, for example, by placing the bars in the middle of so-called shoes, designated 40 in FIGS will. The length of the closely fitting shoes, which are pushed through the furnace on the profiles 40 serving as rails, determines the division of the sequence and the gap width results from: division minus bar thickness. Since the transport movement always progresses by the same shoe length per impact process, the position of the gaps in the furnace always remains the same. Therefore, flow channels 35 a above and 35 b below the Gut-order can be arranged, on which nozzles 34 aligned with the gaps 33 are attached. In the example shown in FIGS. 5 to 8, a flow channel 35 supplies three rows of nozzles 34 aligned with three adjacent gaps 33. Between the flow channels 35, large spaces are created due to the curved or cranked shape of the outer nozzle tubes 36 b. The nozzles 34 are arranged offset on the upper flow channel 35 a and the lower flow channel opposite this net, so that the gaps in question are mutually partially flowed through from above and partly from below. In the case of a device with transport of the goods, as described above, it is advisable to move the nozzles additionally from pair of flow channels to pair of flow channels, because then in connection with the movement of the goods, a further change in loading serves to equalize. This arrangement is shown in FIG. 6 in the right half section for the two nozzle groups 35 aa and 35 from the two upper flow channels. However, it can also be expedient for devices with the described shock transport of the material to select the flow direction in a gap in each case the same, but different from gap to gap. This is particularly advantageous if, in the case of a flow direction changing within a gap, excessive flow mixing between opposite flows would occur with flow paths that are long relative to the gap width. Depending on the design of the device, a fan can be provided to supply only one pair of flow channels 35 a and 35 b, or several pairs.

Die Rückströmung des mit den Düsen 34 in die Lücken 33 eingeblasenen Gas­stromes erfolgt auf der jeweils den Düsen gegenüberliegenden Seite der Gut-Reihung 32 aus den Freiräumen 38 a und 38 b. Der Gasstrom vermischt sich teilweise mit dem aus den benachbarten Düsengruppen ausgeblasenen Gas in­folge der Vermischungstendenz von Gas-Freistrahlen. Durch diese Strahlin­duktion wird zur Beaufschlagung des Gutes ein größeres Gasvolumen in Gewe­gung gesetzt als es der Ventilator fördert, was wiederum der Gleichmäßig­keit der Beaufschlagung förderlich ist. Zur Erzielung von Freistrahlen mit möglichst großer Kernlänge können, wie in Figur 8 gezeigt, in die Enden der Düsenrohre 36 gut gerundete Mündungsstücke oder Düsen eingesetzt werden. Auch bei der Ausführungsform der Vorrichtung zur Strömungsbeaufschlagung einer Gut-Reihung erfolgt die Gasströmung, wie mit den schematischen Strö­mungspfeilen in Figur 5 gezeigt, im geschlossenen Kreislauf. Für den Ven­tilatoreinbau, die Anordnung von Heiz- oder Kühleinrichtungen gelten die gleichen grundsätzlichen Erwägungen, wie für die zuvor beschriebene Aus­führungsform der Vorrichtung zur Strömungsbeaufschlagung von Gut-Stapeln.The backflow of the gas stream blown into the gaps 33 with the nozzles 34 takes place on the side of the product series 32 opposite the nozzles from the free spaces 38 a and 38 b. The gas flow partly mixes with the gas blown out of the neighboring nozzle groups due to the mixing tendency of free gas jets. As a result of this jet induction, a larger gas volume is set in motion than the fan promotes, which in turn promotes the uniformity of the action. To achieve free jets with the largest possible core length, as shown in FIG. 8, well-rounded mouthpieces or nozzles can be inserted into the ends of the nozzle tubes 36. In the embodiment of the device for the flow application of a good series, the gas flow takes place in a closed circuit, as shown with the schematic flow arrows in FIG. For the installation of fans, the arrangement of heating or cooling devices, the same basic considerations apply as for the previously described embodiment of the device for the flow loading of material stacks.

Der wesentliche Vorteil dieser Vorrichtung, nämlich der Wechsel der Strö­mungsrichtung in dem Freiräumen zwischen den Gut-Elementen oder Gut-Lagen in relativ zu den Abmessungen des Gutes kleinen Abständen und dadurch bedingt, eine Vergleichmäßigung der Strömungsbeaufschlagung, wird aus beiden Aus­führungsbeispielen deutlich. Näturlich trifft dies auch für andere Gut-Sta­pel, z.B. Lagen von Rohren, Stangen oder Profilen und andere Gut-Reihungen, z.B. in Gestellen oder einem Stachelband gehaltenen Platten oder Tafeln zu, so daß sich für eine solche Vorrichtung ein weiterer Einsatzbereich ergibt.The main advantage of this device, namely the change in the flow direction in the free space between the good elements or good layers in small distances relative to the dimensions of the good and, as a result, an equalization of the flow loading, becomes clear from both exemplary embodiments. Naturally, this also applies to other stacks of goods, e.g. Layers of pipes, rods or profiles and other rows of goods, e.g. plates or plates held in racks or a barbed tape, so that there is a further area of application for such a device.

Eine weitere Vergleichmäßigung der Strömungsbeaufschlagung läßt sich dadurch erzielen, daß das flächenhafte Gut, insbesondere ein Gutstapel, während der Beblasung in Richtung seiner horizontalen Längsachse in einer Oszillations­bewegung hin- und herbewegt wird; die Amplitude dieser Hin- und Herbewegung wird so angepaßt, daß sie der Teilung der Beblasungseinrichtung, bspw. der Beblasungseinrichtung 18 bei der Ausführungsform nach den Figuren 1 bis 4, entspricht.A further equalization of the flow loading can be achieved in that the flat material, in particular a stack of goods, is moved back and forth in an oscillating movement in the direction of its horizontal longitudinal axis during the blowing; the amplitude of this back and forth movement is adjusted so that it corresponds to the division of the blowing device, for example the blowing device 18 in the embodiment according to FIGS. 1 to 4.

Zum gleichen Zweck sollten auch die Zwischenlagen oder Abstandshalter oder die querverlaufenden Gestellstützen bei den beschriebenen Ausführungsformen auf die Teilung der Beblaseinrichtung abgestimmt sein, um eine sehr homo­gene Strömungsbeaufschlagung zu erzielen. Außerdem lassen sich dadurch die wechselseitig gerichteten Gasströme in den Zwischenräumen der Gutlagen weit­gehend gegeneinander abgrenzen, da die Vermischung mit den gegengerichteten Nachbarströmen weitgehend vermieden wird; dadurch läßt sich wiederum die Strömungsgeschwindigkeit im derart gebildeten Kanal, in Strömungsrichtung betrachtet, länger erhalten.For the same purpose, the intermediate layers or spacers or the transverse frame supports in the described embodiments should also be matched to the division of the blowing device in order to achieve a very homogeneous flow admission. In addition, the mutually directed gas flows in the interstices of the good locations can thereby be largely distinguished from one another, since mixing with the opposing neighboring flows is largely avoided; this in turn allows the flow velocity in the channel formed in this way, viewed in the direction of flow, to be maintained longer.

Figur 9a zeigt zwei Ansichten eines Stapels von Platten, Barren und Tafeln, wobei die einzelnen, horizontalen Lagen durch Zwischenlagen voneinander ge­trennt sind und dadurch Zwischenräume bilden, wie man in der rechten Dar­stellung erkennt.FIG. 9a shows two views of a stack of plates, ingots and sheets, the individual, horizontal layers being separated from one another by intermediate layers and thereby forming intermediate spaces, as can be seen in the illustration on the right.

Figur 9b zeigt einen Gut-Stapel, bei dem die drei oberen Lagen durch Bolzen und Stangen und die untere Lage durch schmale Barren gebildet werden. Diese Lage werden durch aufeinander abgestützte Gestelle gehalten, die in der rechten Ansicht von Figur 9b ohne das Gut dargestellt sind.FIG. 9b shows a stack of goods, in which the three upper layers are formed by bolts and rods and the lower layer by narrow bars. This position is held by mutually supported frames, which are shown in the right view of Figure 9b without the good.

Figur 9c zeigt schließlich mehrere horizontale, durch Körbe gebildeten La­gen, die aufeinandergestapelt sind; diese Körbe sind mit Schüttgut oder kleinen Gutteilen gefüllt.FIG. 9c finally shows several horizontal layers formed by baskets which are stacked on top of one another; these baskets are filled with bulk goods or small parts.

Die horizontalen Lagen sind ebenfalls so angeordnet, daß zwischen den ein­zelnen Korb-Lagen Zwischenräume entstehen. Diese Stapel können z. B. auf eine in Fig. 10 dargestellte Chargiereinrichtung 50 nach Art eines Herdwa­gens aufgebaut werden und mit dieser in die Vorrichtung eingefahren werden. Mit Hilfe entsprechender Einrichtungen, z.B. Hydraulikzylinder 51, die an einer oder beiden Stirnseiten der Vorrichtung 10 angeordnet sind, wird der Gutstapel 12 zwischen den beiden, die Teilung der Blaskasten 18 überdecken­den Endlagen 19a und 19b hin- und herbewegt.The horizontal layers are also arranged so that there are gaps between the individual basket layers. These stacks can e.g. B. be built on a charging device 50 shown in FIG. 10 in the manner of a bogie and be driven into the device with this. With the help of appropriate facilities, e.g. Hydraulic cylinders 51, which are arranged on one or both end faces of the device 10, the material stack 12 is moved back and forth between the two end positions 19a and 19b covering the division of the blow box 18.

Claims (18)

1. Vorrichtung zur Strömungsbeaufschlagung von flächenhaftem Gut in An­ordnung mit durchströmbaren Zwischenräumen (a) mit mindestens einem Radialventilator,
dadurch gekennzeichnet, daß b) der von dem bzw. jedem Radialventilator (14) geförderte Volumenstrom das Gut (12, 32) mittels Düsen (34) oder Ausblaskanälen (18) bebläst, c) die auf einander gegenüberliegenden Seiten des flächenhaften Gutes (12, 32) versetzt zueinander vorgesehen sind, d) so daß in den Zwischenräumen (13, 33) eine entsprechend der versetzten Anordnung der Düsen (34) oder Ausblaskanäle (18) in ihrer Richtung wech­selnde Durchströmung entsteht. 1. Device for the flow application of flat material in an arrangement with flowable spaces (a) with at least one radial fan,
characterized in that b) the volume flow conveyed by the or each radial fan (14) blows the material (12, 32) by means of nozzles (34) or blow-out channels (18), c) the mutually opposite sides of the flat material (12, 32) are provided offset from one another, d) so that in the spaces (13, 33) a flow corresponding to the staggered arrangement of the nozzles (34) or blow-out channels (18) occurs in their direction. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß
e) der oberhalb des flächenhaften Gutes (12, 32) angeordnet Radialven­tilator (14) nach zwei einander gegenüberliegenden Seiten in Sammel­kanäle (17) zur Versorgung der Düsen (34) oder der Ausblaskanäle (18) fördert.2. Device according to claim 1, characterized in that
e) the radial fan (14) arranged above the flat material (12, 32) promotes on two opposite sides in collecting channels (17) for supplying the nozzles (34) or the blow-out channels (18). 3. Vorrichtung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet,daß
f) der Radialventilator (14) mit einem zweiseitig ausblasenden Spiralge­häuse (16) ausgerüstet ist.3. Device according to one of claims 1 or 2, characterized in that
f) the radial fan (14) is equipped with a spiral casing (16) which blows out on both sides. 4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet,daß
g) jeweils neben den einzelnen Ausblaskanälen (18) auf den beiden Seiten des gestapelten flächenhaften Gutes (12) Rückströmräume (20) angeordnet sind.4. Device according to one of claims 1 to 3, characterized in that
g) return flow chambers (20) are arranged next to the individual blow-out channels (18) on both sides of the stacked flat material (12). 5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß
h) die Rückströmräume (20) den vom gegenüberliegenden Ausblaskanal (18) ausgeblasenen Volumenstrom nach Durchströmen des Gut-Stapels (12) sammeln und dem Ansaugbereich (22) des Radialventilators (14) zuführen.5. The device according to claim 4, characterized in that
h) the return flow spaces (20) collect the volume flow blown out by the opposite blow-out duct (18) after flowing through the material stack (12) and feed it to the suction area (22) of the radial fan (14). 6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß
i) die Ausblaskanäle (18) in ihrer Austrittsebene mit einem Umlenkgitter (19) versehen sind.6. Device according to one of claims 1 to 5, characterized in that
i) the outlet ducts (18) are provided with a deflection grille (19) in their exit plane. 7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß
j) jedes Umlenkgitter (19) die Strömung unter Ausnutzung des Wandstrahl­effektes durch den an zylindrisch gewölbten Gitterelementen (23) ent­stehenden Unterdruck umlenkt.7. The device according to claim 6, characterized in that
j) each deflecting grille (19) deflects the flow by utilizing the wall jet effect through the negative pressure created on cylindrically curved grating elements (23). 8. Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß
k) sich der Querschnitt jedes Ausblaskanals (18) vom Eintritt zum Auslaß hin verringert.8. Device according to one of claims 1 to 7, characterized in that
k) the cross section of each blow-out channel (18) decreases from the inlet to the outlet. 9. Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß
l) die Ausblaskanäle (18) durch blendenartige Schürzen (24) auf beiden Längsseiten eine starke Seitenkontraktion der austretenden Strömung ähn­lich einer Borda-Mündung erzeugen und damit die Aufweitung des auf das gestapelte Gut (12) aufgeblasenen Strahls reduzieren.9. Device according to one of claims 1 to 8, characterized in that
l) the blow-out channels (18) generate a strong side contraction of the emerging flow similar to a Borda mouth by means of diaphragm-like aprons (24) on both long sides and thus reduce the expansion of the jet inflated onto the stacked material (12). 10. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet,daß
m) bei Beblasung einer Gut-Reihung (32) oberhalb und unterhalb des Gutes (32) Strömungskanäle (35 a) und (35 b) mit versetzt angebrachten und auf die Zwischenräume (33) zwischen den einzelnen Gutelementen ausgerichteten Düsen (34) angeordnet sind.10. Device according to one of claims 1 to 3, characterized in that
m) when blowing a series of goods (32) above and below the goods (32) flow channels (35 a) and (35 b) are arranged with staggered nozzles (34) aligned with the gaps (33) between the individual material elements . 11. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß
n) die Düsen (34) nicht nur auf den beiden, einander gegenüberliegenden Strömungskanälen (35 a) und (35 b), sondern auch auf benachbarten Strö­mungskanälen (35 aa, 35 bb) gegeneinander versetzt sind.11. The device according to claim 10, characterized in that
n) the nozzles (34) are not only offset from one another on the two flow channels (35 a) and (35 b) lying opposite one another, but also on adjacent flow channels (35 aa, 35 bb). 12. Vorrichtung nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß
o) mehrere Reihen von Düsen (34) durch einen Strömungskanal (35 a, 35 b) versorgt werden.12. The device according to one of claims 1 to 11, characterized in that
o) several rows of nozzles (34) are supplied through a flow channel (35 a, 35 b). 13. Vorrichtung nach einem der Ansprüche 1 bis 3 und 10 bis 12, dadurch ge­kennzeichnet, daß
p) die Düsen aus geraden (36 a) oder gebogenen Rohren (36 b) mit gerundeten Mündungsstücken (37) bestehen, deren lichter Durchmesser kleiner als der­jenige der Rohre (36 a, 36 b) ist.13. The device according to one of claims 1 to 3 and 10 to 12, characterized in that
p) the nozzles consist of straight (36 a) or curved tubes (36 b) with rounded mouth pieces (37), the clear diameter of which is smaller than that of the tubes (36 a, 36 b). 14. Vorrichtung nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß
q) das flächenhafte Gut (12, 32) während der Beblasung in Richtung seiner horizontalen Längsachse hin- und herbewegbar ist.14. Device according to one of claims 1 to 13, characterized in that
q) the flat material (12, 32) can be moved back and forth during the blowing in the direction of its horizontal longitudinal axis. 15. Vorrichtung nach Anspruch 14, dadurch gekennzeichnet, daß
r) die Amplitude der Hin- und Herbewegung des Gutes (12, 32) der Teilung der Ausblaskanäle (18) oder der Düsen (34) entspricht.15. The apparatus according to claim 14, characterized in that
r) the amplitude of the back and forth movement of the goods (12, 32) corresponds to the division of the blow-out channels (18) or the nozzles (34). 16. Vorrichtung nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, daß
s) die Zwischenlagen zwischen dem flächenhaften Gut auf die Teilung der Ausblaskanäle (18) oder Düsen (34) abgestimmt sind und die wechselseitig gerichteten Gasströme in den Zwischenräumen der Gutlagen gegeneinander abgrenzen.16. The device according to one of claims 1 to 15, characterized in that
s) the intermediate layers between the two-dimensional material are matched to the division of the blow-out channels (18) or nozzles (34) and the mutually directed gas flows in the intermediate spaces of the good layers are delimited from one another. 17. Vorrichtung nach Anspruch 16, dadurch gekennzeichnet, daß
t) die Abstandshalter oder die querverlaufenden Gestellstützen zwischen den einzelnen Gutlagen auf die Teilung der Düsen (34) bzw. der Ausblaskanäle (18) abgestimmt sind.17. The apparatus according to claim 16, characterized in that
t) the spacers or the transverse frame supports between the individual material layers are matched to the division of the nozzles (34) or the blow-out channels (18). 18. Vorrichtung nach einem der Ansprüche 1 bis 17, dadurch gekennzeichnet, daß
u) die Strömungsrichtung in einem Gutzwischenraum jeweils gleich ist aber von Zwischenraum zu Zwischenraum wechselt.18. Device according to one of claims 1 to 17, characterized in that
u) the direction of flow in a space between goods is the same but changes from one space to another.
EP88103834A 1987-03-12 1988-03-10 Device to expose to a gas stream objects with flat surfaces in a position which can be traversed Expired - Lifetime EP0283869B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88103834T ATE78581T1 (en) 1987-03-12 1988-03-10 DEVICE FOR STREAMING FLAT GOODS IN ARRANGEMENT WITH INTERMEDIATE SPACES THROUGH FLOW.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3708062 1987-03-12
DE3708062 1987-03-12
DE19873710901 DE3710901A1 (en) 1987-03-12 1987-04-01 DEVICE FOR FLOWING ON SURFACE-GOOD GOODS IN ARRANGEMENT WITH FLOW-ROWING SPACES
DE3710901 1987-04-01

Publications (3)

Publication Number Publication Date
EP0283869A2 true EP0283869A2 (en) 1988-09-28
EP0283869A3 EP0283869A3 (en) 1990-03-14
EP0283869B1 EP0283869B1 (en) 1992-07-22

Family

ID=25853428

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88103834A Expired - Lifetime EP0283869B1 (en) 1987-03-12 1988-03-10 Device to expose to a gas stream objects with flat surfaces in a position which can be traversed

Country Status (2)

Country Link
EP (1) EP0283869B1 (en)
DE (2) DE3710901A1 (en)

Cited By (5)

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EP0652412A1 (en) * 1993-11-05 1995-05-10 Schmitz + Apelt LOI Industrieofenanlagen GmbH Industrial furnace for the thermic treatment of a load in a treatment chamber
EP2322673A3 (en) * 2009-11-13 2011-07-27 Ipsen International GmbH Method and device for guiding the flow in industrial oven used in the thermoforming of metallic materials/workpieces
EP2947161A1 (en) * 2014-05-20 2015-11-25 Schwartz GmbH Flow application device
EP3404349A1 (en) * 2017-05-17 2018-11-21 Automation, Press and Tooling, A.P. & T. Aktiebolag Convection furnace
CN114959200A (en) * 2022-04-27 2022-08-30 兴化市天泰合金制品科技有限公司 Heat treatment device for machining wear-resistant, corrosion-resistant and heat-resistant materials

Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
DE3938684A1 (en) * 1989-11-22 1991-05-23 Wagner Max Novokeram Drying chamber for ceramic products - has air distributor with separate compartments connected to internal ducts
DE102008020040A1 (en) * 2007-10-22 2009-04-23 Otto Junker Gmbh Furnace system i.e. roller hearth furnace system, for convective thermal treatment of copper flat coil, has radial ventilator arranged at blowing out side of heating unit in U-shaped flow channel system surrounding channel cross-section
DE102009048797B3 (en) * 2009-10-08 2011-03-03 Wieland-Werke Ag Heat treatment plant comprises a processing chamber and a circulating device for circulating hot gas in a heating circuit supplying heating or cooling gas to processing chamber, where flow channels are arranged into processing chamber

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JPS60141820A (en) * 1983-12-28 1985-07-26 Kurosaki Rokougiyou Kk Heating device by alternate ejection of hot air
US4626661A (en) * 1984-04-16 1986-12-02 Lincoln Manufacturing Company, Inc. Air delivery system for an impingement food preparation oven
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0652412A1 (en) * 1993-11-05 1995-05-10 Schmitz + Apelt LOI Industrieofenanlagen GmbH Industrial furnace for the thermic treatment of a load in a treatment chamber
EP2322673A3 (en) * 2009-11-13 2011-07-27 Ipsen International GmbH Method and device for guiding the flow in industrial oven used in the thermoforming of metallic materials/workpieces
EP2947161A1 (en) * 2014-05-20 2015-11-25 Schwartz GmbH Flow application device
EP3404349A1 (en) * 2017-05-17 2018-11-21 Automation, Press and Tooling, A.P. & T. Aktiebolag Convection furnace
CN114959200A (en) * 2022-04-27 2022-08-30 兴化市天泰合金制品科技有限公司 Heat treatment device for machining wear-resistant, corrosion-resistant and heat-resistant materials
CN114959200B (en) * 2022-04-27 2023-02-03 兴化市天泰合金制品科技有限公司 Heat treatment device for machining wear-resistant, corrosion-resistant and heat-resistant materials

Also Published As

Publication number Publication date
DE3710901C2 (en) 1991-01-24
DE3872905D1 (en) 1992-08-27
DE3710901A1 (en) 1988-09-29
EP0283869A3 (en) 1990-03-14
EP0283869B1 (en) 1992-07-22

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