EP0186801A2 - Support matrix, in particular for a catalytic exhaust converter - Google Patents

Support matrix, in particular for a catalytic exhaust converter Download PDF

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Publication number
EP0186801A2
EP0186801A2 EP85115376A EP85115376A EP0186801A2 EP 0186801 A2 EP0186801 A2 EP 0186801A2 EP 85115376 A EP85115376 A EP 85115376A EP 85115376 A EP85115376 A EP 85115376A EP 0186801 A2 EP0186801 A2 EP 0186801A2
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EP
European Patent Office
Prior art keywords
corrugated
smooth
carrier matrix
metal foil
foils
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
EP85115376A
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German (de)
French (fr)
Other versions
EP0186801A3 (en
EP0186801B1 (en
Inventor
Manfred Dr. Nonnenmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vitesco Technologies Lohmar Verwaltungs GmbH
Original Assignee
Behr GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
Priority to AT85115376T priority Critical patent/ATE44305T1/en
Publication of EP0186801A2 publication Critical patent/EP0186801A2/en
Publication of EP0186801A3 publication Critical patent/EP0186801A3/en
Application granted granted Critical
Publication of EP0186801B1 publication Critical patent/EP0186801B1/en
Expired legal-status Critical Current

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Classifications

    • B01J35/56—
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
    • F01N3/2807—Metal other than sintered metal
    • F01N3/281—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
    • F01N3/2807—Metal other than sintered metal
    • F01N3/281—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates
    • F01N3/2821—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates the support being provided with means to enhance the mixing process inside the converter, e.g. sheets, plates or foils with protrusions or projections to create turbulence
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/02—Metallic plates or honeycombs, e.g. superposed or rolled-up corrugated or otherwise deformed sheet metal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/30—Honeycomb supports characterised by their structural details
    • F01N2330/32—Honeycomb supports characterised by their structural details characterised by the shape, form or number of corrugations of plates, sheets or foils
    • F01N2330/322—Corrugations of trapezoidal form
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12333—Helical or with helical component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/1241—Nonplanar uniform thickness or nonlinear uniform diameter [e.g., L-shape]

Definitions

  • the invention relates to a carrier matrix according to the preamble of claim 1.
  • the invention is therefore based on the object of avoiding these disadvantages and of creating a support matrix of the type mentioned at the outset which permits good utilization of the catalyst material with a simple production method.
  • the new foils can be stacked on top of one another in a simple manner without having to take into account the shape of the corrugations or the profile of the corrugations.
  • the new film is excellently suited for the production of wound carrier matrices because the continuous smooth metal strip can absorb the tensile stress used during winding, and the corrugated strip that is also continuously adjacent to the smooth metal strip with offset corrugated sections because of its continuous arrangement over the entire width of the smooth strip but also cannot be deformed and undesirably deformed during the winding process.
  • Corrugated metal strips of the type listed in claim 1 have a high intrinsic stability.
  • a radial gas balance in the can be relatively easily Reach carrier matrix bodies between the individual layers or windings if openings are made in the smooth band.
  • a connection of the flow channel sections formed by the corrugated strip can be established between the flow channels lying underneath and above.
  • the laterally adjacent channels formed by the corrugations are also connected to one another, so that a good gas balance is achieved during the flow.
  • the corrugated sections have corrugations with a trapezoidal cross section, which is in each case such that the smaller of the two parallel sides of the trapezoid each form the sides closed by the corrugated strip and the larger sides the open sides of the corrugated strip.
  • This trapezoidal cross section results in an extremely good stability of the corrugated tape, which is important when winding the matrix.
  • a smooth metal foil 1 is shown, which consists for example of a thin steel sheet.
  • This metal foil 1 is provided with openings 2 at certain intervals, which can be stamped, for example.
  • the openings 2 shown are rectangular. Of course you can too differently shaped openings, for example round openings, can be provided.
  • a metal strip Adjacent to the smooth metal foil 1, a metal strip, for example made of the same material but formed as a corrugated strip 3, is provided, which also consists of a single continuous sheet metal strip, but which, for example, was passed through a pair of rollers provided with projections and recesses, so that the Expressions and incisions arise which become clear in Fig. 1.
  • the corrugated strip 3 consists of a plurality of partial corrugated strips 3a, 3b, 3c etc. which are arranged one behind the other in the flow direction 4 and run transversely to the flow direction 4, and which are each designed identically to one another, but each about a quarter of the wavelength a transversely to Flow direction are offset from each other.
  • each corrugated tape 3 is enclosed on both sides after a winding process by a smooth tape 1, so that thereby the aforementioned closed flow channels 5 are formed, but from layer to layer or from winding to winding over the openings 2 are also connected to one another.
  • the corrugated sections 3a, 3b, 3c which are firmly attached to one another, each have because a trapezoidal cross-section, the smaller side 7 of the trapezoid each forming the closed part of the corrugated strip and the larger side 8 of the two parallel sides of the trapezoid forming the open side of the corrugated strip.
  • a wound carrier matrix can be produced in a particularly simple manner with the two films shown in FIG. 1. It can then be soldered in a manner known per se and then coated with catalyst material. The wound foils are, likewise in a known manner, pushed into a tubular housing with a circular or oval cross section before the soldering process.

Abstract

Beschrieben wird eine Trägermatrix für einen katalytischen Reaktor zur Abgasreinigung von Brennkraftmaschinen, die aus abwechselnd aneinander grenzenden glatten und gewellten Metallfolien besteht. Die gewellte Metallfolie ist dabei aus aneinanderhängenden Wellteilstücken gebildet, die in Strömungsrichtung hintereinander, aber quer dazu versetzt angeordnet sind. Die glatte Metallfolie liegt jeweils an den Scheiteln der gewellten Metallfolie an. Dadurch lassen sich die Folien ohne Rücksicht auf die Form der Wellungen aufeinanderschichten. Die neue Folie eignet sich besonders zum Wickeln einer Trägermatrix, weil das glatte Metallband die beim Wickeln aufgewendete Zugspannung aufnehmen kann.A carrier matrix for a catalytic reactor for exhaust gas purification of internal combustion engines is described, which consists of alternating smooth and corrugated metal foils. The corrugated metal foil is formed from mutually attached corrugated sections, which are arranged one behind the other in the flow direction, but offset transversely thereto. The smooth metal foil lies against the tops of the corrugated metal foil. As a result, the foils can be stacked without regard to the shape of the corrugations. The new film is particularly suitable for winding a carrier matrix because the smooth metal band can absorb the tensile stress used during winding.

Description

Die Erfindung betrifft eine Trägermatrix nach dem Oberbegriff des Schutzanspruches 1.The invention relates to a carrier matrix according to the preamble of claim 1.

Es ist bekannt (DE-OS 29 02 779), die Matrix für einen katalytischen Reaktor zur Abgasreinigung aus verschiedenen Folien durch Wickeln derselben herzustellen, wobei beispielsweise jeweils glatte Metallfolien und Metallwellbänder abwechselnd aneinandergelegt und zusammen aufgewickelt werden. Diese Metallfolien werden anschließend verlötet. In einem weiteren Arbeitsvorgang werden sie mit Katalysatormaterial beschichtet. Die Wellbänder zwischen den glatten Folien bilden bei einer solchen Matrix Durchgangskanäle für das Abgas, wobei durch Schrägstellen mit mehrerer hintereinander angeordneter Wellbänder auch die Turbulenz des durchströmenden Abgases im Bereich zwischen zwei glatten Folien erhöht werden kann. Bekannt ist es auch (DE-PS 27 33 640), die glatten Metallfolien jeweils mit Ausprägungen oder Vorsprüngen zu versehen, die in öffnungen in der Wellfolie eingreifen und sich beim Schichten oder Wickeln verhaken, so daß ein gegenseitiges Verrutschen der einzelnen Lagen vermieden und so unter Umständen ein Lötvorgang nicht notwendig wird. Nachteilig ist bei solchen Bauarten, daß beim Wickeln oder beim Schichten auf eine gegenseitige Ausrichtung der aufeinanderzubringenden Schichten geachtet werden muß, was den Herstellungsprozeß aufwendig macht. Trotzdem kann aber nicht in allen Fällen sichergestellt werden, daß die einzelnen Lagen in jeder Matrix in gleicher Weise aufeinandergefügt sind. Dies kann dazu führen, daß in verschiedenen Trägermatrixen unterschiedlich wirksame Katalysatorflächen vorliegen, was im Hinblick auf Ausnutzung dieses Katalysatormateriales unerwünscht ist. Schließlich besteht auch noch ein Nachteil insofern, als solchermaßen aus glatten Folien mit dazwischenliegenden Wellbändern hergestellte Katalysatorkörper zwar für eine Erhöhung der Turbulenz innerhalb der einzelnen, von den glatten Metallfolien eingegrenzten Durchströmungskanäle sorgen, daß in radialer Richtung aber nahezu kein Gasausgleich folgen kann, der im Hinblick auf eine Ausnützung des Katalysatormateriales aber ebenfalls erwünscht ist. Vorgeschlagen wurde deshalb auch schon (DE-P 33 47 086.3), unmittelbar aufeinanderzuschichtende Metallfolien in der Art von Turbulenzblechen auszubilden, wie sie bei Wärmetauschern eingesetzt werden. Solche Bauarten weisen in herstellungstechnischer Hinsicht aber gewisse Nachteile auf.It is known (DE-OS 29 02 779) to produce the matrix for a catalytic reactor for exhaust gas purification from various foils by winding the same, for example smooth metal foils and corrugated metal strips being alternately placed next to one another and wound up together. These metal foils are then soldered. In a further operation, they are coated with catalyst material. In such a matrix, the corrugated strips between the smooth foils form through-channels for the exhaust gas, whereby the inclination with several corrugated strips arranged one behind the other can also increase the turbulence of the exhaust gas flowing through in the region between two smooth foils. It is also known (D E -P S 27 33 640) to provide the smooth metal foils with embossments or protrusions, which engage in openings in the corrugated foil and get caught during layering or winding, so that the individual layers do not slip against one another and so a soldering process may not be necessary. A disadvantage of such designs is that care must be taken to ensure that the layers to be brought into mutual alignment during winding or layering, which makes the manufacturing process complex. Nevertheless, it cannot be guaranteed in all cases that the individual layers in each matrix are assembled in the same way. This can lead to the presence of differently effective catalyst areas in different support matrices, which is undesirable with regard to the utilization of this catalyst material. Finally, there is also a disadvantage in that catalyst bodies produced in this way from smooth foils with intervening corrugated strips increase the turbulence within the individual flow channels delimited by the smooth metal foils, but that virtually no gas compensation can follow in the radial direction, but this is also desirable with regard to utilization of the catalyst material . It has therefore already been proposed (DE-P 33 47 086.3) to form metal foils which are to be layered directly on top of one another in the manner of turbulence sheets as are used in heat exchangers. Such types have certain disadvantages in terms of manufacturing technology.

Der Erfindung liegt daher die Aufgabe zugrunde, diese Nachteile zu vermeiden und eine Trägermatrix der eingangs genannten Art zu schaffen, die eine gute Ausnutzung des Katalysatormateriales bei einfacher Herstellungsweise erlaubt.The invention is therefore based on the object of avoiding these disadvantages and of creating a support matrix of the type mentioned at the outset which permits good utilization of the catalyst material with a simple production method.

Zur Lösung dieser Aufgabe werden die Merkmale des Schutzanspruches 1 vorgesehen. Die neuen Folien lassen sich in einfacher Weise aufeinanderschichten, ohne daß Rücksicht auf die Form der Wellungen oder auf das Profil derselben genommen werden muß. Die neue Folie eignet sich in ausgezeichneter Weise zur Herstellung von gewickelten Trägermatrixen, weil das durchgehende glatte Metallband die beim Wickeln aufgewendete Zugspannung aufnehmen kann, das ebenfalls durchgehend an das glatte Metallband angrenzende Wellband mit versetzten Wellteilstücken wegen seiner über die ganze Breite des glatten Bandes durchgehenden Anordnung aber beim Wickelvorgang auch nicht unzulässig und unerwünscht verformt werden kann. Metallwellbänder der im Anspruch 1 aufgeführten Art weisen nämlich eine hohe Eigenstabilität auf.To achieve this object, the features of claim 1 are provided. The new foils can be stacked on top of one another in a simple manner without having to take into account the shape of the corrugations or the profile of the corrugations. The new film is excellently suited for the production of wound carrier matrices because the continuous smooth metal strip can absorb the tensile stress used during winding, and the corrugated strip that is also continuously adjacent to the smooth metal strip with offset corrugated sections because of its continuous arrangement over the entire width of the smooth strip but also cannot be deformed and undesirably deformed during the winding process. Corrugated metal strips of the type listed in claim 1 have a high intrinsic stability.

Trotz der Verwendung des durchgehenden glatten Bandes läßt sich in relativ einfacher Weise ein radialer Gasausgleich in dem Trägermatrixkörper auch zwischen den einzelnen Schichten oder Wicklungen erreichen, wenn in dem glatten Band öffnungen angebracht sind. Auf diese Weise kann eine Verbindung der vom Wellband gebildeten Strömungskanalteilstücke zwischen darunterliegenden und darüberliegenden Strömungskanälen hergestellt werden. Auch die seitlich aneinandergrenzenden, von den Wellungen gebildeten Kanäle stehen untereinander in Verbindung, so daß ein guter Gasausgleich bei der Durchströmung erreicht wird. Schließlich hat es sich als besonders vorteilhaft erwiesen,wenn die Wellteilstücke Wellungen mit trapezförmigen Querschnitt aufweisen, der jeweils so liegt, daß die kleineren der beiden parallelen Seiten des Trapezes jeweils die vom Wellband abgeschlossenen Seiten und die größeren Seiten die offenen Seiten des Wellbandes bilden. Dieser Trapezquerschnitt ergibt eine außerordentlich gute Stabilität des Wellbandes, was beim Wickeln der Matrix bedeutsam ist.Despite the use of the continuous smooth band, a radial gas balance in the can be relatively easily Reach carrier matrix bodies between the individual layers or windings if openings are made in the smooth band. In this way, a connection of the flow channel sections formed by the corrugated strip can be established between the flow channels lying underneath and above. The laterally adjacent channels formed by the corrugations are also connected to one another, so that a good gas balance is achieved during the flow. Finally, it has proven to be particularly advantageous if the corrugated sections have corrugations with a trapezoidal cross section, which is in each case such that the smaller of the two parallel sides of the trapezoid each form the sides closed by the corrugated strip and the larger sides the open sides of the corrugated strip. This trapezoidal cross section results in an extremely good stability of the corrugated tape, which is important when winding the matrix.

Die Erfindung ist in der Zeichnung anhand von einem Ausführungsbeispiel dargestellt und wird im folgenden erläutert. Es zeigen:

  • Fig. 1 eine schematische perspektivische Teilansicht von zwei neuen Metallfolien, die zur Herstellung einer Trägermatrix für einen Abgaskatalysator verwendbar sind und
  • Fig. 2 die schematische Darstellung einer gewickelten Matrix, die unter Verwendung der beiden in Fig. 1 gezeigten Metallfolien hergestellt ist.
The invention is illustrated in the drawing using an exemplary embodiment and is explained below. Show it:
  • Fig. 1 is a schematic perspective partial view of two new metal foils that can be used to produce a support matrix for an exhaust gas catalyst and
  • Fig. 2 is a schematic representation of a wound matrix, which is produced using the two metal foils shown in Fig. 1.

In der Fig. 1 ist eine glatte Metallfolie 1 gezeigt, die beispielsweise aus einem dünnen Stahlblech besteht. Diese Metallfolie 1 ist in bestimmten Abständen mit öffnungen 2 versehen, die beispielsweise eingestanzt sein können. Die dargestellten öffnungen 2 sind rechteckig ausgebildet. Natürlich können auch anders geformte öffnungen, beispielsweise runde öffnungen, vorgesehen werden.In Fig. 1, a smooth metal foil 1 is shown, which consists for example of a thin steel sheet. This metal foil 1 is provided with openings 2 at certain intervals, which can be stamped, for example. The openings 2 shown are rectangular. Of course you can too differently shaped openings, for example round openings, can be provided.

Angrenzend an die glatte Metallfolie 1 ist ein beispielsweise aus dem gleichen Material bestehendes, aber als Wellband 3 ausgebildetes Metallband vorgesehen, das zwar ebenfalls aus einem einzigen durchgehenden Blechstreifen besteht, der jedoch beispielsweise durch ein mit Vorsprüngen und Aussparungen versehenes Walzenpaar hindurchgeführt wurde, so daß die Ausprägungen und Einschnitte entstehen, die in Fig. 1 deutlich werden. Das Wellband 3 besteht aufgrund dieser Ausbildung aus einer Vielzahl von in der Strömungsrichtung 4 hintereinander angeordneten und quer zur Strömungsrichtung 4 verlaufenden Teilwellstreifen 3a, 3b, 3c usw., die jeweils untereinander gleich ausgebildet sind, aber jeweils etwa um ein Viertel der Wellenlänge a quer zur Strömungsrichtung gegeneinander versetzt sind. Dadurch ergeben sich jeweils Strömungskanalteilstücke 5 gleicher Länge in der Strömungsrichtung 4, die aber so gegeneinander versetzt sind, daß ihre jeweils schräg nach unten verlaufenden Wände 3a' 3b', 3c' etwa in der Mitte des vorhergehenden bzw. des nachfolgenden Strömungskanalteilstückes 5 stehen. Das bei der fertiggestellten Trägermatrix in Richtung des Pfeiles 4 strömende Abgas wird daher bei Durchströmung der Wellteilstücke 3a, 3b, 3c stets auf Strömungswiderstände treffen und in seiner Strömungsrichtung abgelenkt, so daß die Turbulenz des durchströmenden Gases und damit auch die Wirksamkeit der Matrix erhöht wird.Adjacent to the smooth metal foil 1, a metal strip, for example made of the same material but formed as a corrugated strip 3, is provided, which also consists of a single continuous sheet metal strip, but which, for example, was passed through a pair of rollers provided with projections and recesses, so that the Expressions and incisions arise which become clear in Fig. 1. Due to this design, the corrugated strip 3 consists of a plurality of partial corrugated strips 3a, 3b, 3c etc. which are arranged one behind the other in the flow direction 4 and run transversely to the flow direction 4, and which are each designed identically to one another, but each about a quarter of the wavelength a transversely to Flow direction are offset from each other. This results in flow channel sections 5 of the same length in the flow direction 4, but which are offset from one another in such a way that their walls 3a '3b', 3c ', each running obliquely downwards, are approximately in the middle of the preceding or subsequent flow channel section 5. The exhaust gas flowing in the direction of arrow 4 in the finished carrier matrix will therefore always encounter flow resistances when flowing through the corrugated sections 3a, 3b, 3c and will be deflected in its flow direction, so that the turbulence of the gas flowing through and thus also the effectiveness of the matrix will be increased.

Aus Fig. 2 wird deutlich, daß jedes Wellband 3 jeweils auf beiden Seiten nach einem Wicklungsvorgang von einem glatten Band 1 eingeschlossen ist, so daß dadurch die vorher erwähnten geschlossenen Strömungskanäle 5 gebildet werden, die aber von Schicht zu Schicht oder von Wicklung zu Wicklung über die öffnungen 2 auch untereinander in Verbindung stehen.From Fig. 2 it is clear that each corrugated tape 3 is enclosed on both sides after a winding process by a smooth tape 1, so that thereby the aforementioned closed flow channels 5 are formed, but from layer to layer or from winding to winding over the openings 2 are also connected to one another.

Wie den Fig. 1 und 2 zu entnehmen ist, besitzen die Wellteilstücke 3a, 3b, 3c, die untereinander fest aneinanderhängen, jeweils einen trapezförmigen Querschnitt, wobei die kleinere Seite 7 des Trapezes jeweils den geschlossenen Teil des Wellbandes und die größere Seite 8 der beiden parallelen Seiten des Trapezes die offene Seite des Wellbandes bildet. Es entstehen so jeweils durch schräge Wände stabil nach unten abgestützte Brücken an der Seite 7 des Trapezes, die, da sie mit den benachbarten Brücken der angrenzenden Wellteilstücke einstückig zusammenhängen, für eine große Stabilität des Wellbandes 3 sorgen. Dies führt dazu, daß sich das glatte Band 1 und das Wellband 3 in besonders guter Weise für die Herstellung einer Trägermatrix durch Wickeln eignen, wie sie in Fig. 2 gezeigt ist. Das glatte Metallband 1 nimmt nämlich dann die beim Wickeln aufzubringende Zugkraft auf, ohne daß das jeweils zwischen zwei glatten Bändern 1 liegende Wellband 3 wegen seiner großen Stabilität in unerwünschter Weise zusammengedrückt wird. Eine gewickelte Trägermatrix läßt sich mit den beiden in Fig. 1 gezeigten Folien auf besonders einfache Weise herstellen. Sie kann anschließend in an sich bekannter Weise verlötet und dann mit Katalysatormaterial beschichtet werden. Die aufgewickelten Folien werden, ebenfalls in bekannter Weise, vor dem Lötvorgang in ein rohrförmiges Gehäuse mit kreisrundem oder mit ovalem Querschnitt geschoben. Beim Aufeinanderschichten der in Fig. 1 gezeigten Folie lassen sich natürlich auch rechteckige Trägerkörper herstellen.As can be seen in FIGS. 1 and 2, the corrugated sections 3a, 3b, 3c, which are firmly attached to one another, each have because a trapezoidal cross-section, the smaller side 7 of the trapezoid each forming the closed part of the corrugated strip and the larger side 8 of the two parallel sides of the trapezoid forming the open side of the corrugated strip. This results in bridges on the side 7 of the trapezoid which are supported downwards by sloping walls and which, since they are integral with the adjacent bridges of the adjacent corrugated sections, ensure great stability of the corrugated strip 3. This leads to the fact that the smooth band 1 and the corrugated band 3 are particularly well suited for the production of a carrier matrix by winding, as shown in FIG. 2. The smooth metal strip 1 then absorbs the tensile force to be applied during winding without the corrugated strip 3 lying between two smooth strips 1 being undesirably compressed because of its great stability. A wound carrier matrix can be produced in a particularly simple manner with the two films shown in FIG. 1. It can then be soldered in a manner known per se and then coated with catalyst material. The wound foils are, likewise in a known manner, pushed into a tubular housing with a circular or oval cross section before the soldering process. When the film shown in FIG. 1 is stacked on top of one another, it is of course also possible to produce rectangular carrier bodies.

Claims (4)

1. Trägermatrix, insbesondere für einen katalytischen Reaktor zur Abgasreinigung von Brennkraftmaschinen, bestehend aus abwechselnd aneinander grenzenden glatten und gewellten Metallfolien, die gewickelt, geschichtet oder gefaltet sind, dadurch gekennzeichnet, daß die gewellte Metallfolie (3) aus aneinander hängenden Wellteilstücken (3a, 3b, 3c) besteht, die in Strömungsrichtung (4) hintereinander, aber quer dazu versetzt angeordnet sind und daß jeweils eine glatte Metallfolie (1) an den Scheiteln (7) der gewellten Metallfolie (3) anliegt.1. Carrier matrix, in particular for a catalytic reactor for exhaust gas purification of internal combustion engines, consisting of alternating adjacent smooth and corrugated metal foils, which are wound, layered or folded, characterized in that the corrugated metal foil (3) from contiguous corrugated sections (3a, 3b , 3c), which are arranged one behind the other in the direction of flow (4) but offset transversely thereto and in that a smooth metal foil (1) lies against the apexes (7) of the corrugated metal foil (3). 2. Trägermatrix nach Anspruch 1, dadurch gekennzeichnet, daß das glatte Metallband (1) mit öffnungen (2) versehen ist.2. Carrier matrix according to claim 1, characterized in that the smooth metal strip (1) is provided with openings (2). 3. Trägermatrix nach Anspruch 1, dadurch gekennzeichnet, daß die Wellteilstücke (3a, 3b, 3c) Wellungen mit trapezförmigem Querschnitt aufweist, wobei die kleineren (7) der beiden parallelen Seiten (7, 8) des Trapezes jeweils die vom Wellband abgeschlossenen Stege und die größeren Seiten (8) die offenen Seiten des Wellteilstückes (3a, 3b, 3c) bilden.3. Carrier matrix according to claim 1, characterized in that the corrugated sections (3a, 3b, 3c) have corrugations with a trapezoidal cross section, the smaller (7) of the two parallel sides (7, 8) of the trapezoid each having the webs closed by the corrugated tape and the larger sides (8) form the open sides of the corrugated section (3a, 3b, 3c). 4. Trägermatrix nach Anspruch 3, dadurch gekennzeichnet, daß die Wellteilstücke (3a, 3b, 3c) einstückig aneinanderhängen.4. Carrier matrix according to claim 3, characterized in that the corrugated sections (3a, 3b, 3c) hang together in one piece.
EP85115376A 1984-12-29 1985-12-04 Support matrix, in particular for a catalytic exhaust converter Expired EP0186801B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85115376T ATE44305T1 (en) 1984-12-29 1985-12-04 CARRIER MATRIX, IN PARTICULAR FOR A CATALYTIC REACTOR FOR EXHAUST GAS PURIFICATION.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8438260U 1984-12-29
DE19848438260U DE8438260U1 (en) 1984-12-29 1984-12-29 CARRIER MATRIX, ESPECIALLY FOR A CATALYTIC REACTOR FOR EXHAUST GAS PURIFICATION

Publications (3)

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EP0186801A2 true EP0186801A2 (en) 1986-07-09
EP0186801A3 EP0186801A3 (en) 1987-09-30
EP0186801B1 EP0186801B1 (en) 1989-06-28

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EP85115376A Expired EP0186801B1 (en) 1984-12-29 1985-12-04 Support matrix, in particular for a catalytic exhaust converter

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US (1) US4665051A (en)
EP (1) EP0186801B1 (en)
JP (1) JPH0328913Y2 (en)
AT (1) ATE44305T1 (en)
DE (2) DE8438260U1 (en)

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WO1991001178A1 (en) * 1989-07-18 1991-02-07 Emitec Gesellschaft Für Emissionstechnologie Mbh Honeycomb body with internal flow-conducting surfaces, in particular catalyst body for motor vehicles
WO1991001807A1 (en) * 1989-07-27 1991-02-21 Emitec Gesellschaft Für Emissionstechnologie Mbh Honeycomb body with internal inflow edges, in particular catalyst body for motor vehicles
FR2695326A1 (en) * 1992-09-08 1994-03-11 Strasbourg Ecole Nale Sup Arts Metallic matrix of catalytic reactor for the treatment of combustion gases.
US5328774A (en) * 1990-08-06 1994-07-12 Emitec Gesellschaft Fur Emissionstechnologie Mbh Monolithic metal honeycomb body with varying number of channels
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US4803189A (en) * 1986-05-12 1989-02-07 Interatom Gmbh Catalyst carrier of metallic honeycomb having a supporting wall and a method for producing the same
US4946822A (en) * 1986-05-12 1990-08-07 Interatom Gmbh Catalyst carrier body having a supporting wall and a method for producing the same
US4842954A (en) * 1986-11-20 1989-06-27 Emitec Gesellschaft Fur Emissionstechnologie Mbh Metal catalyst carrier body, blank for producing the body
EP0316596A2 (en) * 1987-11-13 1989-05-24 Emitec Gesellschaft für Emissionstechnologie mbH Process and apparatus for producing a carrier body for a catalytic reactor
EP0316596A3 (en) * 1987-11-13 1989-07-12 Emitec Gesellschaft für Emissionstechnologie mbH Process and apparatus for producing a carrier body for a catalytic reactor
US4958428A (en) * 1987-11-13 1990-09-25 Suddeutsche Kuhlerfabrik Julius Fr. Behr Gmbh & Co. Kg Process and an arrangement for producing a supporting body for a catalytic reactor
FR2625257A1 (en) * 1987-12-24 1989-06-30 Sotralentz Sa DEVICE FOR THE CATALYTIC TREATMENT OF COMBUSTION GASES OF AN AUTOMOTIVE ENGINE AND METHOD FOR MANUFACTURING A CATALYST CARTRIDGE FOR SUCH A DEVICE
DE8811086U1 (en) * 1988-09-01 1988-10-20 Sueddeutsche Kuehlerfabrik Julius Fr. Behr Gmbh & Co Kg, 7000 Stuttgart, De
EP0375986A1 (en) * 1988-12-30 1990-07-04 Emitec Gesellschaft für Emissionstechnologie mbH Carrier for a catalytic reactor for the purification of exhaust gases
US5403559A (en) * 1989-07-18 1995-04-04 Emitec Gesellschaft Fuer Emissionstechnologie Device for cleaning exhaust gases of motor vehicles
WO1991001178A1 (en) * 1989-07-18 1991-02-07 Emitec Gesellschaft Für Emissionstechnologie Mbh Honeycomb body with internal flow-conducting surfaces, in particular catalyst body for motor vehicles
WO1991001807A1 (en) * 1989-07-27 1991-02-21 Emitec Gesellschaft Für Emissionstechnologie Mbh Honeycomb body with internal inflow edges, in particular catalyst body for motor vehicles
US5130208A (en) * 1989-07-27 1992-07-14 Emitec Gesellschaft Fuem Emisstonstechnologie Mbh Honeycomb body with internal leading edges, in particular a catalyst body for motor vehicles
US5045403A (en) * 1989-07-27 1991-09-03 Emitec Gesellschaft Fur Emissionstechnologie Mbh Honeycomb body with internal leading edges, in particular a catalyst body for motor vehicles
US5328774A (en) * 1990-08-06 1994-07-12 Emitec Gesellschaft Fur Emissionstechnologie Mbh Monolithic metal honeycomb body with varying number of channels
FR2695326A1 (en) * 1992-09-08 1994-03-11 Strasbourg Ecole Nale Sup Arts Metallic matrix of catalytic reactor for the treatment of combustion gases.
EP0587074A1 (en) * 1992-09-08 1994-03-16 Sotralentz S.A. Device for mixing and swirling gases and liquids, especially for catalysts of motor vehicles
WO1994026411A1 (en) * 1993-05-13 1994-11-24 Siemens Aktiengesellschaft Plate-type catalytic converter
US5820832A (en) * 1993-05-13 1998-10-13 Siemens Aktiengesellschaft Plate-type catalytic converter
WO2002040156A2 (en) * 2000-11-15 2002-05-23 Nissan Motor Co., Ltd. Metallic catalyst carrier
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Also Published As

Publication number Publication date
EP0186801A3 (en) 1987-09-30
JPS61115139U (en) 1986-07-21
US4665051A (en) 1987-05-12
DE8438260U1 (en) 1985-04-11
DE3571263D1 (en) 1989-08-03
ATE44305T1 (en) 1989-07-15
JPH0328913Y2 (en) 1991-06-20
EP0186801B1 (en) 1989-06-28

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