EP0929738B1 - Corps alveole a isolation thermique, de preference pour pot catalytique - Google Patents

Corps alveole a isolation thermique, de preference pour pot catalytique Download PDF

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Publication number
EP0929738B1
EP0929738B1 EP97910300A EP97910300A EP0929738B1 EP 0929738 B1 EP0929738 B1 EP 0929738B1 EP 97910300 A EP97910300 A EP 97910300A EP 97910300 A EP97910300 A EP 97910300A EP 0929738 B1 EP0929738 B1 EP 0929738B1
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EP
European Patent Office
Prior art keywords
insulating sheet
honeycomb body
body according
sheet layers
honeycomb
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.)
Expired - Lifetime
Application number
EP97910300A
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German (de)
English (en)
Other versions
EP0929738A1 (fr
Inventor
Rolf BRÜCK
Peter Hirth
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
Emitec Gesellschaft fuer Emissionstechnologie mbH
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Filing date
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Publication of EP0929738A1 publication Critical patent/EP0929738A1/fr
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Publication of EP0929738B1 publication Critical patent/EP0929738B1/fr
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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
    • 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
    • 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
    • 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
    • F01N3/2864—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 the mats or gaskets comprising two or more insulation layers
    • 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/14—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having thermal insulation
    • 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
    • F01N2330/04—Methods of manufacturing
    • 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
    • F01N2330/321—Honeycomb supports characterised by their structural details characterised by the shape, form or number of corrugations of plates, sheets or foils with two or more different kinds of corrugations in the same substrate
    • 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
    • Y10T428/1234—Honeycomb, or with grain orientation or elongated elements in defined angular relationship in respective components [e.g., parallel, inter- secting, etc.]
    • 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]
    • Y10T428/12417—Intersecting corrugating or dimples not in a single line [e.g., waffle form, etc.]
    • 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
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24149—Honeycomb-like
    • 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
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24149—Honeycomb-like
    • Y10T428/24165—Hexagonally shaped cavities

Definitions

  • the present invention relates to a honeycomb body with a plurality of Honeycomb according to the features of the preamble of claim 1.
  • Ein Such a honeycomb body is known from EP-A-0 229 352.
  • a coating applied to the walls of the honeycomb catalytic material enables the conversion of exhaust gases from internal combustion engines.
  • honeycomb walls are made of metal, for example.
  • One way of Production of honeycomb bodies with such honeycomb walls involves soldering. Suitable types of soldering are, for example, from WO 89/07488 known.
  • thermal radiation protection consists of one or more sheet layers, which are arranged outside a casing tube. In doing so uses the same sheet metal layers as the honeycomb structure within the Form the casing tube.
  • WO 96/07021 describes one catalytic reactor for the conversion of exhaust gases, both within and also has thermal insulation outside a jacket. As Examples of such insulation are an air gap and an insulating mat called.
  • the present invention has for its object a honeycomb body to develop so that he has little heat loss to the environment.
  • the honeycomb body according to the invention is characterized in that it has a Thermal insulation with a plurality of stacked and / or wound Has insulating sheet layers, which are mutually through in the insulating sheet layers support trained microstructures so that between the insulating sheet layers There are gaps.
  • the microstructures have roughly a height of 15 ⁇ m to 250 ⁇ m. They are much lower than the structures known from EP 0 229 352 for the formation of exhaust gas flowable honeycomb channels. Microstructures of this height are out WO 96/09892 known in which they are laminar for thorough mixing flowing exhaust gas in the honeycomb-like channels have been proposed are.
  • the properties such microstructures but used in a completely different way.
  • the greater stack density has another advantage.
  • suitable Formation of microstructures e.g. so that this narrow sharp-edged Have ridges, the contact surface between each considerably reduce two layers of insulating sheet. This means that heat can also be transported be significantly reduced due to heat conduction.
  • the insulating sheet layers surround the honeycombs as closed as possible.
  • honeycomb bodies for the Use as an exhaust gas catalyst carrier are naturally openings for the Keep entry and exit of exhaust gas clear.
  • thermal insulation is also used Protection of heat-sensitive objects in the vicinity of a honeycomb body used. The thermal insulation only partially surrounds the honeycombs, so that a thermal insulation effect in, seen from the honeycomb, limited solid angle ranges is achieved.
  • a honeycomb body according to the invention are the insulating sheet layers of the thermal insulation at least partially with each other technically connected, preferably soldered.
  • One advantage is that thus achievable mechanical stability of the thermal insulation.
  • the honeycombs have metallic honeycomb walls on.
  • Adjacent insulation sheet layers are metallic, solder connections can Honeycombs with each other and from honeycombs with insulating sheet layers at the same time the same soldering process.
  • honeycomb walls other materials, such as ceramic, used for the honeycomb walls, or combined different materials.
  • materials such as ceramic, used for the honeycomb walls, or combined different materials.
  • a special design is achieved by using a green ceramic with a variety of honeycomb insulation sheet layers and then the ceramic is fired. In a variant of it keep the insulating sheet layers on the green ceramic due to their microstructures firmly, as these are pressed into the green ceramic.
  • a honeycomb body according to the invention which in suitably equipped with catalytically active material themselves for converting exhaust gases from an internal combustion engine, in particular of an Otto engine.
  • the exhaust gas temperature of such engines is typically above 800 ° C.
  • a honeycomb body for this purpose must Corrosion processes at these temperatures over thousands of operating hours withstand.
  • the thermal insulation is not that high Exposed to temperatures like the honeycomb walls. With good insulation reach at most similar insulating sheet layers to the honeycomb walls high temperatures.
  • the thermal insulation also does not come into contact with the honeycomb body with corrosive gases, in particular in an embodiment in which the Thermal insulation against any gas entry into the gaps is completed is.
  • the insulating sheet layers of the thermal insulation are in a different embodiment Parts of a continuous sheet metal strip that is spirally wound.
  • the thermal insulation has exactly two metal strips on, the microstructures being formed in at least one.
  • the two metal strips are in a spiral winding with each other devoured.
  • Such a winding can be produced, for example, by that the two metal strips are first placed on top of each other then one end to each other and / or to another part of the honeycomb body, e.g. attached to a casing tube and then wound.
  • Other variants use more than two metal strips. Spiral windings are advantageous, among other things, because they are particularly easy to manufacture. But it can also be ring-shaped in itself closed insulation sheet layers are used.
  • the honeycombs are at least partially heatable. Due to the thermal insulation, the heated area can be without substantial heat losses quickly to a desired operating temperature to be brought. The thermal insulation helps to conserve the energy source, e.g. a battery of a motor vehicle.
  • the thermal insulation has end faces, where edges of a plurality of the insulating sheet layers lie. Will one The face of such a honeycomb body, for example, has air flowing against it, then an undesirable cooling effect by an air flow through the Interstices occur.
  • the Insulation sheet layers therefore close to the face or faces at least partially interconnected so that an air flow, or a different gas flow, between the gaps and the environment of the Thermal insulation is obstructed or blocked.
  • the insulation sheet layers soldered to each other near the front they are on the end face with a filling compound or it is an additional End piece attached to the front.
  • the efficiency of thermal insulation is increased in that the gaps All or part of the air between the insulating sheet layers and are evacuated. Except for the decrease in total thermal conductivity is therefore also the entry of corrosive gases into the Prevents thermal insulation.
  • the heat radiation within the heat insulation and / or the heat radiation from the honeycomb body to the outside is further reduced by at least part of the insulating sheet layers of the thermal insulation, in particular at least one outer layer of insulating sheet, equipped with a surface are that have an emissivity less than 0.1.
  • these layers of insulating sheet consist of one material the desired emission properties, in another embodiment lies on the surface a layer of material made of another material exists, as the majority of the insulating sheet layer otherwise.
  • the layer can, for example, have been evaporated.
  • Figure 1 is a preferred embodiment 1 of an inventive Honeycomb body shown.
  • the core consists of a large number of honeycombs 2, which are formed by coiled, smooth and corrugated sheet layers.
  • the Honeycombs form the end faces 10 connecting channels.
  • the core is from a cylindrical jacket tube 6, which in turn from the thermal insulation 43 is included.
  • the heat insulation 43 has in the embodiment Layers of insulating sheet metal, one 4 smooth and another 34 is microstructured on both sides 5.
  • Figure 1 shows a snapshot a point in time just before the two insulating sheet layers 4 and 34 completely to be wrapped around the core.
  • FIG 2 shows a honeycomb body with a core as in Figure 1, of an inner jacket tube 6 is included.
  • the outside of the inside Jacket tube 6 subsequent heat insulation 3 has in relation to Diameter of the core has a much greater thickness than that in the figure 1 shown embodiment.
  • the heat insulation 3 is from a second, outer jacket tube 6 comprises.
  • FIG. 23 A special structure of thermal insulation 23 can be seen in FIG.
  • the insulating sheet layers 24 are part of a continuous spiral wound Sheet metal strip 11 with microstructures 5, which are on the inner side of the Raise sheet metal strip 11.
  • the sheet metal strip 11 is at its beginning 8 connected to the casing tube 6. At its end 9 it is at another Section attached by itself.
  • FIG. 4 shows another possible construction of thermal insulation
  • the structure is similar to that in FIG. 1, but here the microstructures 5 run the sheet metal strip 11 in a direction approximately parallel to the channels, while in the example of FIG. 1 they run approximately transversely to it.
  • the Thermal insulation 33 exists, in contrast to thermal insulation 23 in FIG 3, from two metal strips 11; 12, one of which is 12 smooth, i.e. no Has microstructures 5.
  • the insulating sheet layer 14 has approximately the same on its microstructure 5 Thick as usual. Such a microstructure is created, for example by stamping or bending the insulating sheet layer 14. Another possibility the creation of microstructures consists in the application of additional Material on an insulating sheet layer.
  • the insulating sheet layer 14 is layered built up.
  • the thinner anti-emission layer 15 forms a continuous one Surface on one side of the insulating sheet layer 14. It is from the base material 16 worn.
  • An anti-emission layer 15 can e.g. are applied galvanically to the base material 16.
  • FIG. 6 shows an insulating sheet layer 34 in which the microstructures 5 have a Have a group of parallel ridges running in a line-like manner. The ridges rise alternately on both sides of the Isolierblechlage 34. The microstructures 5 meet perpendicularly on the front Edge 10 of the insulating sheet layer 34.
  • an insulating sheet layer 44 shown in FIG Microstructures 5 is due to the direction of intersection Ridges mechanically particularly stable. You can, depending of the desired bending radius, possibly only bend in certain directions and wrap it around a honeycomb core. As the ridges follow raise exactly one side of the insulating sheet layer 44, the insulating sheet layer 44 on the other side advantageously with insulating sheet layers 14; 24; 34; 44 combined, which also have microstructures. The combination with Insulating sheet layers without microstructures would become one on one side undesirable large-area contact.
  • the Combination with insulating sheet layers 14; 24; 34 their overall picture of microstructures themselves regarding the shape, the crossing angle and / or the Distance of the microstructures from the overall picture of the insulating sheet layer 44 differs.
  • microstructures can be prevented an insulating sheet layer in the microstructures of another insulating sheet layer can intervene positively.
  • Figure 8 shows an insulating sheet layer with microstructures 5, which are suitable for a favorable combination with that in FIG 7 insulating sheet layer shown is suitable.
  • FIGS. 9 and 10 pieces of each are in a partial section Honeycomb core and thermal insulation 43; 53 shown.
  • the Transition from core to thermal insulation 43; 53 takes place via a Insulating sheet layer 4 without microstructures (FIG. 9) or via an insulating sheet layer 34 with microstructures (Figure 10).
  • the insulating sheet layers 4; 34 each form a stack, but with a different stacking sequence.
  • all of the insulating sheet layers 34 are microstructured on two sides.
  • Figure 9 have the insulating sheet layers 34 with the microstructures at least an insulating sheet layer 4 without microstructures as the next following neighbor.
  • Circular cross sections shown in figures are by no means the only ones Possibilities for the shape of a honeycomb body according to the invention. Examples for other shapes there is a conical spatial shape or a polygonal one Cross-section.
  • a thermal insulation 3; 23; 33; 43; 53 with microstructured Insulating sheet layers can also be relative to other than shown in the figures Arrange honeycomb 2. For example, it can only enclose the honeycombs 2 on one side, or there may also be honeycombs 2 outside of it.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Catalysts (AREA)
  • Laminated Bodies (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

L'invention concerne un corps alvéolé comportant une pluralité d'alvéoles et une isolation thermique (43) comportant une pluralité de couches de tôles isolantes (4; 34) empilées et/ou enroulées qui se soutiennent mutuellement par des microstructures (5) formées dans les couches de tôles isolantes (34), de manière à créer des espaces entre lesdites couches de tôles isolantes (4; 34). Les microstructures (5) ont une hauteur comprise entre 10 et 250 νm. Il ne se produit ainsi que peu de déperdition de chaleur au niveau de l'environnement.

Claims (12)

  1. Corps alvéolaire avec une pluralité d'alvéoles et avec une isolation thermique (3 ; 23 ; 33 ; 43 ; 53) d'une multiplicité de couches de tôles isolantes (4 ; 7 ; 14 ; 24 ; 34 ; 44) empilées et/ou enroulées, caractérisé en ce que les couches de tôles isolantes (4 ; 7 ; 14 ; 24 ; 34 ; 44) se supportent entre elles par des microstructures (5) réalisées dans les couches de tôles isolantes (14 ; 24 ; 34 ; 44), afin qu'il y ait des interstices entre les couches de tôles isolantes (4 ; 7 ; 14 ; 24 ; 34 ; 44), les microstructures (5) ayant une hauteur de 15 µm à 250 µm.
  2. Corps alvéolaire selon la revendication 1, caractérisé en ce que l'isolation thermique (3 ; 23 ; 33 ; 43 ; 53) n'entoure les alvéoles (2) que partiellement.
  3. Corps alvéolaire selon la revendication 1 ou 2, caractérisé en ce qu'il est un convertisseur pour la transformation catalytique de gaz d'échappement, notamment de gaz d'échappement de machines à combustion interne, notamment de moteurs à allumage par étincelle.
  4. Corps alvéolaire selon la revendication 1, 2 ou 3, caractérisé en ce que les couches de tôles isolantes (4 ; 7 ; 14 ; 24 ; 34 ; 44) sont au moins partiellement reliées entre elle par technique de jointoiement, de préférence brasées.
  5. Corps alvéolaire selon l'une des revendications 1 à 4, caractérisé en ce que les alvéoles (2) présentent des parois métalliques d'alvéoles qui sont formées par des couches de tôles enroulées, lisses ou ondulées.
  6. Corps alvéolaire selon la revendication 5, caractérisé en ce que les parois métalliques d'alvéoles sont au moins partiellement reliées entre elles par technique de jointoiement, de préférence brasées.
  7. Corps alvéolaire selon la revendication 5 ou 6, caractérisé en ce que le matériau des parois métalliques d'alvéoles et le matériau des couches de tôles isolantes (4 ; 7 ; 14 ; 24 ; 34 ; 44) diffèrent, le premier notamment étant résistant à la corrosion à des températures au-dessus de 800°C et le dernier étant moins résistant à la corrosion.
  8. Corps alvéolaire selon l'une des revendication 5 à 7, caractérisé en ce qu'une partie des parois d'alvéoles est reliée par technique de jointoiement, de préférence par brasage, avec au moins une des couches de tôles isolantes (4 ; 7 ; 14 ; 24 ; 34 ; 44).
  9. Corps alvéolaire selon l'une des revendications 1 à 8, caractérisé en ce qu'il présente un tube d'enveloppe (6) à l'intérieur duquel se trouvent les alvéoles (2).
  10. Corps alvéolaire selon l'une des revendications 1 à 7, caractérisé en ce qu'il présente un tube d'enveloppe (6) et que l'isolation thermique (3 ; 23 ; 33 ; 43 ; 53) se trouve à l'extérieur du tube d'enveloppe (6).
  11. Corps alvéolaire selon l'une des revendications 1 à 10, caractérisé en ce que la couche de tôle isolante d'extrémité (7) est plus épaisse que les couches de tôles isolantes (4 ; 14 ; 24 ; 34 ; 44) se trouvant à l'intérieur de celle-ci.
  12. Corps alvéolaire selon l'une des revendications 1 à 8, caractérisé en ce qu'il présente un tube d'enveloppe (6) à l'intérieur duquel se trouve l'isolation thermique.
EP97910300A 1996-10-04 1997-09-17 Corps alveole a isolation thermique, de preference pour pot catalytique Expired - Lifetime EP0929738B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19641049A DE19641049A1 (de) 1996-10-04 1996-10-04 Wabenkörper mit Wärmeisolierung, vorzugsweise für einen Abgaskatalysator
DE19641049 1996-10-04
PCT/EP1997/005098 WO1998015724A1 (fr) 1996-10-04 1997-09-17 Corps alveole a isolation thermique, de preference pour pot catalytique

Publications (2)

Publication Number Publication Date
EP0929738A1 EP0929738A1 (fr) 1999-07-21
EP0929738B1 true EP0929738B1 (fr) 2001-05-23

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EP97910300A Expired - Lifetime EP0929738B1 (fr) 1996-10-04 1997-09-17 Corps alveole a isolation thermique, de preference pour pot catalytique

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US (1) US6040064A (fr)
EP (1) EP0929738B1 (fr)
JP (1) JP4166832B2 (fr)
KR (1) KR100495790B1 (fr)
CN (1) CN1082133C (fr)
AU (1) AU4775097A (fr)
DE (2) DE19641049A1 (fr)
ES (1) ES2158516T3 (fr)
MY (1) MY121648A (fr)
TW (1) TW384345B (fr)
WO (1) WO1998015724A1 (fr)

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JP3811349B2 (ja) * 2000-12-18 2006-08-16 本田技研工業株式会社 排ガス浄化用ハニカム構造体の製造装置
JP2002305157A (ja) * 2000-12-28 2002-10-18 Tokyo Electron Ltd ハニカム構造断熱体及び熱再利用システム
DE10293166D2 (de) 2001-07-19 2004-07-01 Emitec Emissionstechnologie Feder-Dämpfer-System eines Wabenkörpers und dessen Herstellung
DE10137878A1 (de) * 2001-08-02 2003-02-27 Emitec Emissionstechnologie Abgaskatalysator mit Dehnungen ausgleichender Lagerung
JP2003080083A (ja) * 2001-09-14 2003-03-18 Calsonic Kansei Corp メタル触媒担体
US7476366B2 (en) * 2002-04-18 2009-01-13 Emitec Gesellschaft Fuer Emissionstechnologie Mbh Catalyst carrier body with corrugated casing and process for producing the same
US7366340B1 (en) * 2004-06-22 2008-04-29 Reflect Scientific (Dba) Miralogix Method and system for optically determining perpendicularity of end surface of part formed from parallel channels
WO2006034243A2 (fr) * 2004-09-17 2006-03-30 0783963 Bc Ltd. Systemes et dispositifs de traitement d'hydrocarbures pour moteurs et equipement a combustion
KR100948356B1 (ko) * 2004-11-23 2010-03-22 조나단 제이 페인스테인 제트 충돌 열전달 반응기
EP1690589A1 (fr) * 2005-02-10 2006-08-16 Tzong-Yih Lee Convertisseur catalytique actif
DE102005017725A1 (de) * 2005-04-15 2006-10-19 Emitec Gesellschaft Für Emissionstechnologie Mbh Wabenkörper mit Doppelmantelrohr
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DE102008019999A1 (de) 2008-04-21 2009-10-22 J. Eberspächer GmbH & Co. KG Luftspaltisolierter Abgaskrümmer
JP5679645B2 (ja) * 2009-02-03 2015-03-04 カルソニックカンセイ株式会社 金属触媒担体及びその製造方法
DE102009018825A1 (de) * 2009-04-24 2010-10-28 Emitec Gesellschaft Für Emissionstechnologie Mbh Blechlage mit Anti-Diffusionsstrukturen und metallischer Wabenkörper mit mindestens einer solchen Blechlage
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JP2001501705A (ja) 2001-02-06
US6040064A (en) 2000-03-21
TW384345B (en) 2000-03-11
EP0929738A1 (fr) 1999-07-21
AU4775097A (en) 1998-05-05
CN1232526A (zh) 1999-10-20
KR20000048541A (ko) 2000-07-25
ES2158516T3 (es) 2001-09-01
DE59703615D1 (de) 2001-06-28
CN1082133C (zh) 2002-04-03
WO1998015724A1 (fr) 1998-04-16
KR100495790B1 (ko) 2005-06-17
JP4166832B2 (ja) 2008-10-15
MY121648A (en) 2006-02-28
DE19641049A1 (de) 1998-04-09

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