EP0316595A1 - Carrier for a catalytic reactor for cleaning flue gas - Google Patents

Carrier for a catalytic reactor for cleaning flue gas Download PDF

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Publication number
EP0316595A1
EP0316595A1 EP88117307A EP88117307A EP0316595A1 EP 0316595 A1 EP0316595 A1 EP 0316595A1 EP 88117307 A EP88117307 A EP 88117307A EP 88117307 A EP88117307 A EP 88117307A EP 0316595 A1 EP0316595 A1 EP 0316595A1
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EP
European Patent Office
Prior art keywords
honeycomb body
jacket
tube
body according
carrier body
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.)
Withdrawn
Application number
EP88117307A
Other languages
German (de)
French (fr)
Inventor
Reinhold Dipl.-Ing.(Fh) Kuchelmeister
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.)
Mahle Behr GmbH and Co KG
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
Publication of EP0316595A1 publication Critical patent/EP0316595A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
    • F01N3/2853—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
    • B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/02—Fitting monolithic blocks into the housing
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/18—Methods or apparatus for fitting, inserting or repairing different elements by using quick-active type locking mechanisms, e.g. clips
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/20—Methods or apparatus for fitting, inserting or repairing different elements by mechanical joints, e.g. by deforming housing, tube, baffle plate or parts thereof
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/22—Methods or apparatus for fitting, inserting or repairing different elements by welding or brazing

Definitions

  • the innovation relates to a carrier body for a catalytic reactor for exhaust gas purification, in particular for internal combustion engines, consisting of a honeycomb body which is wound or folded from corrugated or from corrugated and smooth metal strips and is provided with a plurality of flow channels and which is held in a jacket tube.
  • Carrier bodies of this type are known (DE-OS 35 32 408).
  • the metallic honeycomb body is inserted axially into the casing tube and soldered or welded to it to secure it axially.
  • a problem with this type of production, especially when there are no cylindrical honeycomb bodies and jacket tubes, is the difficulty in bringing the honeycomb body with its outer circumference close to the jacket tube in order to be able to carry out good soldering subsequently.
  • the innovation is therefore based on the object of designing a carrier body in such a way that there is a simple possibility of production without the seating of the honeycomb body in the tubular casing being impaired.
  • the innovation consists in the fact that an elastically deformable, heat-resistant mat that envelops the honeycomb body is clamped between the circumference of the honeycomb body and the casing tube.
  • This configuration makes it possible to hold the honeycomb body under radial pressure in the casing tube, which does not yet bring about any deformation of the honeycomb body.
  • soldering can also be dispensed with in the case of such a carrier body, because the elastic forces and the frictional and positive engagement between the casing tube and the honeycomb body caused by the elastic deformation of the mat are sufficient, with appropriate dimensioning, to also solder the honeycomb body without soldering To keep the casing tube.
  • the mat is advantageously produced from a material which is known per se and swells with increasing temperature. This measure ensures a perfect hold of the honeycomb body in the jacket tube even at higher temperatures.
  • the sub-claims 3 to 5 characterize an embodiment in which, in a manner known per se, the jacket tube, which can be expanded radially by the division, is pressed in the radial direction from the outside onto the mat and onto the honeycomb body and is then fixed in its final shape.
  • claims 6 and 7 have the advantage that the jacket tube can be made stable for this type of manufacture. It is also advantageous that the sound insulation is improved by the arrangement of the beads.
  • FIG. 1 shows a cylindrical honeycomb body (1) constructed in a known manner by winding or also folding a corrugated or a corrugated and a smooth metal strip, which are provided with a plurality of flow channels (2), which are only indicated schematically here all run parallel to the axis (5) of the cylindrical honeycomb body (1).
  • This honeycomb body (1) is held in a likewise cylindrical jacket tube (3) in that a mat (4) made of an elastic but heat-resistant material is clamped between the jacket tube (3) and the outer periphery of the honeycomb body (1).
  • the mat (4) is therefore elastically radially together in the position shown by the outer casing tube (3) in turn presses and presses on the honeycomb body (1) without impairing its structure in the area of the outer circumference.
  • the size of the annular gap that remains in the end position between the honeycomb body (1) and the jacket tube (3) is matched to the thickness of the mat (4) and its elastic properties so that the honeycomb body (1) is sufficiently tight in the jacket tube (3) is guaranteed, but without fear of damage to the honeycomb body (1).
  • the casing tube (3) is placed radially from the outside onto the honeycomb body (1) wrapped with the mat (4).
  • the jacket tube is slit along a jacket line running parallel to the axis (5) and connected along this slot (8), which in the exemplary embodiment, as can be seen in particular in FIG. 2, occurs because the edges (6 and 7) of the two jacket parts to be joined together overlap in an overlap area (9).
  • the outer edge (6) is then or the like with the jacket part assigned to the edge (7) by means of a weld seam (13). firmly connected.
  • This connection process is preceded by the radial compression of the jacket, which is compressed from the position shown in dashed lines in FIG. 1, in which the edges (6 'and 7') are not yet in contact with one another, by a suitable device so that the assembly of the Edges (6 and 7) becomes possible.
  • FIG. 5 A particularly suitable way of closing the jacket (3 '), which is slotted along a jacket line, is shown in Fig. 5.
  • Fig. 5 A particularly suitable way of closing the jacket (3 '), which is slotted along a jacket line, is shown in Fig. 5.
  • an arrangement has been made which serves for the form-fitting closing of the jacket (3 ').
  • T-shaped protruding tabs (10) are provided, which engage in corresponding T-shaped recesses (11) on the edge (7) when the jacket (3 ') has reached the dimension during radial compression , which was determined to be sufficient for fastening the honeycomb body (1) while elastically deforming the mat (4).
  • a cover plate (17) can be provided on one of the two jacket parts, for example on the jacket part assigned to the edge (7) when closing the jacket (3 ') prevents radial escape of the mat (4).
  • Fig. 6 shows a modification of the carrier body of Fig. 1 insofar as here the jacket is constructed from two half-shells (3a and 3b), between which the honeycomb body (1 ') is clamped with the mat (4) enveloping it.
  • a connection according to FIG. 2 or any of the other possibilities shown can be provided at the two overlap points (9, 9a).
  • the two half-shells (3a and 3b) are provided with beads (12) which run in planes which are arranged perpendicular to the axis (5 ') of the honeycomb body (1'), which in this Case has an elliptical cross-section, which it can have from the beginning, or to which it is pressed starting from a cylindrical shape, in which correspondingly free spaces are included, when the half-shells (3a and 3b) are put on.
  • an excellent hold of the honeycomb body (1 ') is achieved in the jacket without soldering being necessary. In this way, the problems associated with the problem can be avoided accordingly reliable soldering of metallic honeycomb bodies in a metallic jacket tube.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

A carrier is described for a catalytic reactor for cleaning exhaust gas, particularly for internal-combustion engines. The carrier consists of a honeycomb body (1) which is wound or folded from corrugated, or corrugated and flat, metal strips and is provided with a plurality of flow channels (2), and which is held in a jacket tube (3). An elastically deformable, heat-resistant mat (4), surrounding the honeycomb body (1), is clamped between the circumference of the honeycomb body (1) and the metal tube (3). This mat permits temperature-dependent thermal expansions of the honeycomb body. <IMAGE>

Description

Die Neuerung bezieht sich auf einen Trägerkörper für einen ka­talytischen Reaktor zur Abgasreinigung, insbesondere für Ver­brennungskraftmaschinen, bestehend aus einem aus gewellten oder aus gewellten und glatten Metallbändern gewickelten oder gefal­teten, mit einer Vielzahl von Strömungskanälen versehenen Wa­benkörper, der in einem Mantelrohr gehalten ist.The innovation relates to a carrier body for a catalytic reactor for exhaust gas purification, in particular for internal combustion engines, consisting of a honeycomb body which is wound or folded from corrugated or from corrugated and smooth metal strips and is provided with a plurality of flow channels and which is held in a jacket tube.

Trägerkörper dieser Art sind bekannt (DE-OS 35 32 408). Bei der Herstellung solcher Bauformen wird der metallische Wabenkörper axial in das Mantelrohr eingeschoben und zur Axialsicherung mit diesem verlötet oder auch verschweißt. Ein Problem bei dieser Art der Herstellung ist, insbesondere wenn keine zylindrischen Wabenkörper und Mantelrohre vorliegen, die Schwierigkeit, den Wabenkörper mit seinem Außenumfang dicht an das Mantelrohr her­anzubringen, um anschließend eine gute Verlötung vornehmen zu können.Carrier bodies of this type are known (DE-OS 35 32 408). In the manufacture of such designs, the metallic honeycomb body is inserted axially into the casing tube and soldered or welded to it to secure it axially. A problem with this type of production, especially when there are no cylindrical honeycomb bodies and jacket tubes, is the difficulty in bringing the honeycomb body with its outer circumference close to the jacket tube in order to be able to carry out good soldering subsequently.

Bekannt ist es deshalb auch (DE-OS 28 56 030), anstelle des axialen Einschiebens in ein Mantelrohr, das Mantelrohr zu tei­len und unter radialem Druck auf den Wabenkörper aufzudrücken, ehe die Mantelrohrteile miteinander fest verbunden werden. Bei einer solchen Art der Herstellung tritt eine gewisse Verquet­schung des Umfanges des Wabenkörpers ein, durch die zwar ein enges Anliegen des Wabenkörpers am Mantelrohr erreicht werden kann, ein Großteil der im Wabenkörper gebildeten Strömungskanä­le aber zugedrückt werden kann, so daß die entsprechenden Flä­chen anschließend nicht mit der an der katalytischen Umsetzung teilnehmen können.It is therefore also known (DE-OS 28 56 030), instead of the axial insertion into a jacket tube, to divide the jacket tube and press it onto the honeycomb body under radial pressure before the jacket tube parts are firmly connected to one another. With such a type of production, there is a certain squeezing of the circumference of the honeycomb body, through which a close contact of the honeycomb body with the tubular casing can be achieved, but a large part of the flow channels formed in the honeycomb body can be squeezed, so that the corresponding areas are not subsequently included who can participate in the catalytic conversion.

Der Neuerung liegt daher die Aufgabe zugrunde, einen Trägerkör­per so auszubilden, daß eine einfache Herstellungsmöglichkeit besteht, ohne daß jedoch der Sitz des Wabenkörpers im Mantel­rohr beeinträchtigt wird.The innovation is therefore based on the object of designing a carrier body in such a way that there is a simple possibility of production without the seating of the honeycomb body in the tubular casing being impaired.

Ausgehend von der Überlegung, daß es vorteilhaft ist, den Um­fang des Wabenkörpers in einer Schutzschicht einzubetten, be­steht die Neuerung darin, daß zwischen dem Umfang des Wabenkör­pers und dem Mantelrohr eine elastisch verformbare, hitzebe­ständige und den Wabenkörper umhüllende Matte eingeklemmt ist. Diese Ausgestaltung erlaubt es, den Wabenkörper unter radialm Druck im Mantelrohr zu halten, der noch keine Verformung des Wabenkörpers mit sich bringt. Es hat sich gezeigt, daß bei ei­nem solchen Trägerkörper auch auf eine Verlötung verzichtet werden kann, weil die elastischen Kräfte und der durch die ela­stische Verformung der Matte bedingte Reib- und Formschluß zwi­schen Mantelrohr und Wabenkörper bei entsprechender Dimensio­nierung ausreicht, um den Wabenkörper auch lötlos im Mantelrohr zu halten.Based on the consideration that it is advantageous to embed the circumference of the honeycomb body in a protective layer, the innovation consists in the fact that an elastically deformable, heat-resistant mat that envelops the honeycomb body is clamped between the circumference of the honeycomb body and the casing tube. This configuration makes it possible to hold the honeycomb body under radial pressure in the casing tube, which does not yet bring about any deformation of the honeycomb body. It has been shown that soldering can also be dispensed with in the case of such a carrier body, because the elastic forces and the frictional and positive engagement between the casing tube and the honeycomb body caused by the elastic deformation of the mat are sufficient, with appropriate dimensioning, to also solder the honeycomb body without soldering To keep the casing tube.

Vorteilhaft wird dabei nach dem Merkmal des Anspruches 2 die Matte aus einem - an sich bekannten - bei zunehmender Tempera­tur aufquellenden Material hergestellt. Diese Maßnahme sichert auch bei höheren Temperaturen einen einwandfreien Halt des Wa­benkörpers im Mantelrohr.According to the feature of claim 2, the mat is advantageously produced from a material which is known per se and swells with increasing temperature. This measure ensures a perfect hold of the honeycomb body in the jacket tube even at higher temperatures.

Die Unteransprüche 3 bis 5 kennzeichnen eine Ausführungsform, bei der in an sich bekannter Weise das Mantelrohr, das sich durch die Teilung radial aufweiten läßt, in radialer Richtung von außen auf die Matte und auf den Wabenkörper aufgedrückt und anschließend in seiner Endform fixiert wird.The sub-claims 3 to 5 characterize an embodiment in which, in a manner known per se, the jacket tube, which can be expanded radially by the division, is pressed in the radial direction from the outside onto the mat and onto the honeycomb body and is then fixed in its final shape.

Die Merkmale der Ansprüche 6 und 7 bringen den Vorteil mit sich, daß das Mantelrohr für diese Art der Herstellung stabil ausgebildet sein kann. Vorteilhaft ist außerdem, daß die Schallisolation durch die Anordnung der Sicken verbessert wird.The features of claims 6 and 7 have the advantage that the jacket tube can be made stable for this type of manufacture. It is also advantageous that the sound insulation is improved by the arrangement of the beads.

Ausführungsbeispiele der Neuerung sind in der Zeichnung darge­stellt und werden im folgenden erläutert. Es zeigen:

  • Fig. 1 eine perspektivische schematische Darstellung einer ersten Ausführungsform der Neuerung mit einem in der Endform zylindrischen Mantelrohr,
  • Fig. 2 eine vergrößerte Detaildarstellung der Nahtstelle des Mantelrohres der Fig. 1,
  • Fig. 3 eine Variante der Nahtstelle eines Mantelrohres, ähnlich Fig. 1,
  • Fig. 4 eine weitere Möglichkeit der Ausbildung der Naht­stelle eines Mantelrohres, ähnlich Fig. 1,
  • Fig. 5 eine weitere Möglichkeit der Ausbildung der Ver­bindungsstelle an einem Mantelrohr, ähnlich Fig. 1 und
  • Fig. 6 eine perspektivische schematische Darstellung einer Ausführungsform der Neuerung mit einem Wabenkörper mit elliptischem Querschnitt.
Exemplary embodiments of the innovation are shown in the drawing and are explained below. Show it:
  • 1 is a perspective schematic representation of a first embodiment of the innovation with a cylindrical tubular casing in the final shape,
  • 2 is an enlarged detail view of the interface of the casing tube of FIG. 1,
  • 3 shows a variant of the interface of a casing tube, similar to FIG. 1,
  • 4 shows a further possibility of forming the interface of a casing tube, similar to FIG. 1,
  • Fig. 5 shows another way of forming the connection point on a jacket tube, similar to Fig. 1 and
  • Fig. 6 is a perspective schematic representation of an embodiment of the innovation with a honeycomb body with an elliptical cross section.

In der Fig. 1 ist ein in bekannter Weise durch Wickeln oder auch durch Falten eines gewellten oder eines gewellten und ei­nes glatten Metallbandes aufgebauter zylindrischer Wabenkörper (1) gezeigt, der mit einer Vielzahl, hier nur schematisch ange­deuteter Strömungskanäle (2) versehen sind, die alle parallel zur Achse (5) des zylindrischen Wabenkörpers (1) verlaufen. Dieser Wabenkörper (1) ist in einem ebenfalls zylindrischen Mantelrohr (3) dadurch gehalten, daß zwischen dem Mantelrohr (3) und dem äußeren Umfang des Wabenkörpers (1) eine Matte (4) aus einem elastischen, aber hitzebeständigen Material einge­klemmt ist. Die Matte (4) ist daher in der gezeigten Lage durch das außenliegende Mantelrohr (3) elastisch radial zusammenge­ drückt und drückt ihrerseits auf den Wabenkörper (1), ohne dessen Struktur im Bereich des Außenumfanges zu beeinträch­tigen. Die Größe des Ringspaltes, der zwischen dem Wabenkörper (1) und dem Mantelrohr (3) in der Endstellung verbleibt, wird so auf die Dicke der Matte (4) und deren Elastizitätseigen­schaften abgestimmt, daß ein ausreichend fester Sitz des Wa­benkörpers (1) im Mantelrohr (3) gewährleistet ist, ohne daß jedoch Beschädigungen des Wabenkörpers (1) befürchtet werden müssen.1 shows a cylindrical honeycomb body (1) constructed in a known manner by winding or also folding a corrugated or a corrugated and a smooth metal strip, which are provided with a plurality of flow channels (2), which are only indicated schematically here all run parallel to the axis (5) of the cylindrical honeycomb body (1). This honeycomb body (1) is held in a likewise cylindrical jacket tube (3) in that a mat (4) made of an elastic but heat-resistant material is clamped between the jacket tube (3) and the outer periphery of the honeycomb body (1). The mat (4) is therefore elastically radially together in the position shown by the outer casing tube (3) in turn presses and presses on the honeycomb body (1) without impairing its structure in the area of the outer circumference. The size of the annular gap that remains in the end position between the honeycomb body (1) and the jacket tube (3) is matched to the thickness of the mat (4) and its elastic properties so that the honeycomb body (1) is sufficiently tight in the jacket tube (3) is guaranteed, but without fear of damage to the honeycomb body (1).

Das Mantelrohr (3) ist beim gezeigten Ausführungsbeispiel radi­al von außen auf den mit der Matte (4) umwickelten Wabenkörper (1) aufgesetzt. Zu diesem Zweck ist das Mantelrohr längs einer parallel zur Achse (5) verlaufenden Mantellinie aufgeschlitzt und längs dieses Schlitzes (8) verbunden, was beim Ausführungs­beispiel, wie insbesondere aus Fig. 2 erkennbar ist, dadurch geschieht, daß die Kanten (6 und 7) der beiden aneinanderzufü­genden Mantelteile sich in einem Überlappungsbereich (9) über­decken. Die äußere Kante (6) wird dann mit dem der Kante (7) zugeordneten Mantelteil durch eine Schweißnaht (13) o.dgl. fest verbunden. Diesen Verbindungsvorgang vorausgegangen ist das ra­diale Zusammendrücken des Mantels, der aus der in der Fig. 1 gestrichelt gezeichneten Stellung, in der die Kanten (6′ und 7′) noch nicht aneinander anliegen, durch eine geeignete Vorrichtung soweit zusammengedrückt wird, daß das Zusammenfügen der Kanten (6 und 7) möglich wird.In the exemplary embodiment shown, the casing tube (3) is placed radially from the outside onto the honeycomb body (1) wrapped with the mat (4). For this purpose, the jacket tube is slit along a jacket line running parallel to the axis (5) and connected along this slot (8), which in the exemplary embodiment, as can be seen in particular in FIG. 2, occurs because the edges (6 and 7) of the two jacket parts to be joined together overlap in an overlap area (9). The outer edge (6) is then or the like with the jacket part assigned to the edge (7) by means of a weld seam (13). firmly connected. This connection process is preceded by the radial compression of the jacket, which is compressed from the position shown in dashed lines in FIG. 1, in which the edges (6 'and 7') are not yet in contact with one another, by a suitable device so that the assembly of the Edges (6 and 7) becomes possible.

Anstelle des Überlappens und Verschweißens der Kanten (6 und 7) wäre es auch möglich, an der einen Kante des Mantels (3′) eine flanschartig abragende Kante (14) zu bilden, die von einem Bör­delrand (15) übergriffen wird. Genauso ist es möglich, beide offenen Enden des Mantels (3′), so wie in Fig. 4 gezeigt, im Bereich des Schlitzes (8) mit je einem abragenden Randflansch (14′ bzw. 16) zu versehen und dann beide Flanschränder durch eine Schweißnaht (13) untereinander zu verbinden.Instead of overlapping and welding the edges (6 and 7), it would also be possible to form on one edge of the jacket (3 ') a flange-like protruding edge (14) which is overlapped by a flanged edge (15). It is also possible to provide both open ends of the jacket (3 '), as shown in Fig. 4, in the area of the slot (8) with a projecting edge flange (14' and 16) and then both flange edges by one To connect the weld seam (13) to each other.

Eine besonders geeignete Art und Weise des Verschließens des Mantels (3′), der längs einer Mantellinie geschlitzt ist, ist in Fig. 5 dargestellt. Hier ist im Bereich der freien Kanten (6 und 7), die zwischen sich den Schlitz (8) bilden, eine Anord­nung getroffen, die zum formschlüssigen Verschließens des Man­tels (3′) dient. Zu diesem Zweck sind an der Kante (6) T-förmig vorstehende Laschen (10) vorgesehen, die in entsprechende T­förmige Ausnehmungen (11) an der Kante (7) eingreifen, wenn der Mantel (3′) beim radialen Zusammendrücken das Maß erreicht hat, das zur Befestigung des Wabenkörpers (1) unter elastischer Ver­formung der Matte (4) als ausreichend bestimmt wurde. Um bei dieser Art der Herstellung ein Einklemmen der elastischen Matte (4) in dem Schlitz (8) zu verhindern, kann an einem der beiden Mantelteile, beispielsweise an dem der Kante (7) zugeordneten Mantelteil, ein Abdeckblech (17) vorgesehen sein, das beim Ver­schließen des Mantels (3′) ein radiales Ausweichen der Matte (4) verhindert.A particularly suitable way of closing the jacket (3 '), which is slotted along a jacket line, is shown in Fig. 5. Here, in the area of the free edges (6 and 7) which form the slot (8) between them, an arrangement has been made which serves for the form-fitting closing of the jacket (3 '). For this purpose, on the edge (6) T-shaped protruding tabs (10) are provided, which engage in corresponding T-shaped recesses (11) on the edge (7) when the jacket (3 ') has reached the dimension during radial compression , which was determined to be sufficient for fastening the honeycomb body (1) while elastically deforming the mat (4). In order to prevent jamming of the elastic mat (4) in the slot (8) in this type of production, a cover plate (17) can be provided on one of the two jacket parts, for example on the jacket part assigned to the edge (7) when closing the jacket (3 ') prevents radial escape of the mat (4).

Die Fig. 6 zeigt eine Abwandlung des Trägerkörpers der Fig. 1 insofern, als hier der Mantel aus zwei Halbschalen (3a und 3b) aufgebaut ist, zwischen denen der Wabenkörper (1′) mit der ihn umhüllenden Matte (4) verklemmt ist. An den beiden Überlap­pungsstellen (9, 9a) kann eine Verbindung gemäß Fig. 2 oder je­der der anderen dargestellten Möglichkeiten vorgesehen werden. Bei dieser Ausführungsform ist es vorteilhaft, wenn die beiden Halbschalen (3a und 3b) mit Sicken (12) versehen sind, die in Ebenen verlaufen, die senkrecht zu der Achse (5′) des Wabenkör­pers (1′) angeordnet sind, der in diesem Fall einen ellipti­schen Querschnitt aufweist, den er von Anfang an haben kann, oder zu dem er ausgehend von einer zylindrischen Form, in der entsprechend Freiräume enthalten sind, beim Aufsetzen der Halb­schalen (3a und 3b) gedrückt wird. Auch in diesem Fall wird ein ausgezeichneter Halt des Wabenkörpers (1′) im Mantel erreicht, ohne daß eine Verlötung notwendig ist. Auf diese Weise können auch die Probleme vermieden werden, die sich mit dem ausrei­ chend sicheren Verlöten metallischer Wabenkörper in einem me­tallischen Mantelrohr ergeben.Fig. 6 shows a modification of the carrier body of Fig. 1 insofar as here the jacket is constructed from two half-shells (3a and 3b), between which the honeycomb body (1 ') is clamped with the mat (4) enveloping it. A connection according to FIG. 2 or any of the other possibilities shown can be provided at the two overlap points (9, 9a). In this embodiment, it is advantageous if the two half-shells (3a and 3b) are provided with beads (12) which run in planes which are arranged perpendicular to the axis (5 ') of the honeycomb body (1'), which in this Case has an elliptical cross-section, which it can have from the beginning, or to which it is pressed starting from a cylindrical shape, in which correspondingly free spaces are included, when the half-shells (3a and 3b) are put on. In this case, too, an excellent hold of the honeycomb body (1 ') is achieved in the jacket without soldering being necessary. In this way, the problems associated with the problem can be avoided accordingly reliable soldering of metallic honeycomb bodies in a metallic jacket tube.

Claims (8)

1. Trägerkörper für einen katalytischen Reaktor zur Abgas­reinigung, insbesondere für Verbrennungskraftmaschinen, beste­hend aus einem aus gewellten oder aus gewellten und glatten Me­tallbändern gewickeltem oder gefaltetem, mit einer Vielzahl von Strömungskanälen (2) versehenen Wabenkörper (1), der in einem Mantelrohr (3) gehalten ist, dadurch gekennzeichnet, daß zwi­schen dem Umfang des Wabenkörpers (1) und dem Metallrohr (3) eine elastisch verformbare, hitzebeständige und den Wabenkörper (1) umhüllende Matte (4) eingeklemmt ist.1. Carrier body for a catalytic reactor for exhaust gas purification, in particular for internal combustion engines, consisting of a honeycomb body (1) which is wound or folded from corrugated or from corrugated and smooth metal strips and which is provided with a plurality of flow channels (2) and which is arranged in a casing tube (3). is held, characterized in that an elastically deformable, heat-resistant mat (4) enveloping the honeycomb body (1) is clamped between the circumference of the honeycomb body (1) and the metal tube (3). 2. Trägerkörper nach Anspruch 1, dadurch gekennzeichnet, daß die Matte (4) aus einem bei zunehmender Temperatur aufquel­lenden Material besteht.2. Carrier body according to claim 1, characterized in that the mat (4) consists of a material swelling with increasing temperature. 3. Trägerkörper nach Anspruch 1, dadurch gekennzeichnet, daß das Mantelrohr (3) mindestens längs einer Mantellinie ge­schlitzt und mit den Kanten (6, 7) der Mantelteile längs dieses Schlitzes (8) zur Rohrform zusammengesetzt ist.3. Carrier body according to claim 1, characterized in that the jacket tube (3) is slotted at least along a jacket line and is assembled with the edges (6, 7) of the jacket parts along this slot (8) to form a tube. 4. Trägerkörper nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die im Bereich des Schlitzes (8) an­ einandergrenzenden Kanten (6, 7) der Mantelteile sich gegen­seitig überlappen und an der Überlappungsstelle (9) verbunden sind.4. Support body according to one of claims 1 to 3, characterized in that in the region of the slot (8) mutually bordering edges (6, 7) of the jacket parts overlap one another and are connected at the overlap point (9). 5. Trägerkörper nach Anspruch 3, dadurch gekennzeichnet, daß die Kanten (6, 7) der Mantelteile mit formschlüssig inein­andergreifenden Laschen (10) und Ausnehmungen (11) versehen sind.5. Carrier body according to claim 3, characterized in that the edges (6, 7) of the casing parts with interlocking tabs (10) and recesses (11) are provided. 6. Trägerkörper nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Mantelrohr (3) mit Sicken (12) verse­hen ist.6. Support body according to one of claims 1 to 5, characterized in that the casing tube (3) is provided with beads (12). 7. Trägerkörper nach Anspruch 6, dadurch gekennzeichnet, daß die Sicken (12) in senkrecht zu der Achse des Mantelrohres (3) verlaufenden Ebenen liegen.7. Carrier body according to claim 6, characterized in that the beads (12) lie in planes extending perpendicular to the axis of the casing tube (3). 8. Trägerkörper nach den Ansprüchen 1 bis 3, dadurch ge­kennzeichnet, daß das Mantelrohr aus zwei Hälften (3a, 3b) zu­sammengesetzt ist.8. Carrier body according to claims 1 to 3, characterized in that the jacket tube is composed of two halves (3a, 3b).
EP88117307A 1987-11-18 1988-10-18 Carrier for a catalytic reactor for cleaning flue gas Withdrawn EP0316595A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8715289U 1987-11-18
DE8715289U DE8715289U1 (en) 1987-11-18 1987-11-18 Carrier body for a catalytic reactor for exhaust gas purification

Publications (1)

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EP0316595A1 true EP0316595A1 (en) 1989-05-24

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EP (1) EP0316595A1 (en)
JP (1) JPH0180620U (en)
DE (1) DE8715289U1 (en)

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EP0353056A2 (en) * 1988-07-28 1990-01-31 Ngk Insulators, Ltd. Honeycomb structure and method of producing the same
EP0467247A1 (en) * 1990-07-16 1992-01-22 Cummins Engine Company, Inc. Diesel particulate trap mounting system
US5149475A (en) * 1988-07-28 1992-09-22 Ngk Insulators, Ltd. Method of producing a honeycomb structure
GB2242841B (en) * 1990-04-13 1994-03-23 Gilardini Spa A catalytic converter for vehicles,particularly motor vehicles
EP0684097A1 (en) * 1994-05-21 1995-11-29 Firma Schmitz + Brill Method of manufacturing au element for the exhaust system of a motor vehicle
DE19905525C2 (en) * 1998-03-30 2001-11-22 Honda Motor Co Ltd Process for producing a metal catalyst carrier and metal catalyst carrier
CN110295980A (en) * 2018-03-22 2019-10-01 佛吉亚排放控制技术德国有限公司 Exhaust system component
CN111852636A (en) * 2019-04-29 2020-10-30 埃贝斯佩歇排气技术有限公司 Housing of an exhaust system, in particular for an internal combustion engine of a vehicle

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DE3817490C2 (en) * 1988-05-21 1996-07-04 Emitec Emissionstechnologie Support body for a catalytic reactor for exhaust gas purification
DE8811086U1 (en) * 1988-09-01 1988-10-20 Emitec Gesellschaft für Emissionstechnologie mbH, 53797 Lohmar Carrier body for a catalytic reactor for exhaust gas purification
DE3831616A1 (en) * 1988-09-17 1990-03-22 Sueddeutsche Kuehler Behr Process for the production of support bodies for catalytic reactors for exhaust gas purification
DE3833675A1 (en) * 1988-10-04 1990-04-05 Sueddeutsche Kuehler Behr Support body for a catalytic reactor for exhaust gas purification
ES2206769T3 (en) 1997-02-12 2004-05-16 Corning Incorporated MANUFACTURING PROCEDURE OF A CATALYTIC CONVERTER FOR USE IN AN INTERNAL COMBUSTION ENGINE.
DE102004014069A1 (en) * 2004-02-06 2005-08-25 Volkswagen Ag Exhaust gas cleaning device for combustion engines comprises a casing pipe made from sheet metal to hold an exhaust gas treatment body inside the pipe
DE102004015814A1 (en) * 2004-03-31 2005-10-20 Volkswagen Ag Exhaust gas purifying device for an internal combustion engine has an exhaust gas treatment unit (EGTU) and a tubular jacket made from a sheet metal plate for mounting the EGTU inside the jacket
DE102009035612A1 (en) * 2009-07-31 2011-02-03 Emitec Gesellschaft Für Emissionstechnologie Mbh Method for soldering a honeycomb body for vehicle with a combustion engine, comprises inserting the honeycomb body into a fixing means, soldering the honeycomb body and removing the fixing means from the honeycomb body
JP2019116869A (en) * 2017-12-27 2019-07-18 サクラ工業株式会社 Catalytic unit
JP6678691B2 (en) * 2018-02-27 2020-04-08 本田技研工業株式会社 Exhaust gas purification device

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0353056A2 (en) * 1988-07-28 1990-01-31 Ngk Insulators, Ltd. Honeycomb structure and method of producing the same
EP0353056A3 (en) * 1988-07-28 1991-03-13 Ngk Insulators, Ltd. Honeycomb structure and method of producing the same
US5098763A (en) * 1988-07-28 1992-03-24 Ngk Insulators, Ltd. Honeycomb structure
US5149475A (en) * 1988-07-28 1992-09-22 Ngk Insulators, Ltd. Method of producing a honeycomb structure
GB2242841B (en) * 1990-04-13 1994-03-23 Gilardini Spa A catalytic converter for vehicles,particularly motor vehicles
EP0467247A1 (en) * 1990-07-16 1992-01-22 Cummins Engine Company, Inc. Diesel particulate trap mounting system
EP0684097A1 (en) * 1994-05-21 1995-11-29 Firma Schmitz + Brill Method of manufacturing au element for the exhaust system of a motor vehicle
DE19905525C2 (en) * 1998-03-30 2001-11-22 Honda Motor Co Ltd Process for producing a metal catalyst carrier and metal catalyst carrier
CN110295980A (en) * 2018-03-22 2019-10-01 佛吉亚排放控制技术德国有限公司 Exhaust system component
CN111852636A (en) * 2019-04-29 2020-10-30 埃贝斯佩歇排气技术有限公司 Housing of an exhaust system, in particular for an internal combustion engine of a vehicle
US11168604B2 (en) * 2019-04-29 2021-11-09 Purem GmbH Housing, especially for an exhaust system of an internal combustion engine of a vehicle
CN111852636B (en) * 2019-04-29 2022-04-26 普瑞姆有限公司 Housing of an exhaust system, in particular for an internal combustion engine of a vehicle

Also Published As

Publication number Publication date
DE8715289U1 (en) 1988-01-14
JPH0180620U (en) 1989-05-30

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