WO2011072406A1 - Particulate filter device - Google Patents

Particulate filter device Download PDF

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Publication number
WO2011072406A1
WO2011072406A1 PCT/CH2010/000144 CH2010000144W WO2011072406A1 WO 2011072406 A1 WO2011072406 A1 WO 2011072406A1 CH 2010000144 W CH2010000144 W CH 2010000144W WO 2011072406 A1 WO2011072406 A1 WO 2011072406A1
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WO
WIPO (PCT)
Prior art keywords
clamping rings
central portion
cap
inlet
outlet
Prior art date
Application number
PCT/CH2010/000144
Other languages
German (de)
French (fr)
Inventor
Jiri Kavena
Original Assignee
Baumot Ag
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 Baumot Ag filed Critical Baumot Ag
Publication of WO2011072406A1 publication Critical patent/WO2011072406A1/en

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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
    • 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
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • 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
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • F01N13/1827—Sealings specially adapted for exhaust systems
    • 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
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • F01N13/1844—Mechanical joints
    • 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
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1888—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells
    • F01N13/1894—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells the parts being assembled in longitudinal direction
    • 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
    • F01N2450/30—Removable or rechangeable blocks or cartridges, e.g. for filters
    • 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
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • 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
    • F01N3/26—Construction of thermal reactors

Definitions

  • the invention relates to a particulate filter device according to the preamble of the independent claim.
  • Modern internal combustion engines, especially diesel engines are now increasingly equipped with particulate filter devices that filter out unwanted particles from the exhaust gas streams generated by the engines.
  • a known particulate filter device suitable for such purposes is e.g. described in document WO 2005/059324 AI.
  • the inlet cap and the outlet cap are detachably connected to the central section by means of clamping rings.
  • the connection of the housing parts by means of clamping rings is structurally simple and very effective.
  • the inlet cap and the outlet cap are provided at their ends facing the central portion, each with an outwardly projecting peripheral annular flange.
  • the central portion is provided at its or near its axial ends, each with an outwardly projecting peripheral annular flange.
  • peripheral annular flange of the central portion abuts the peripheral ring of the inlet cap and the outlet cap.
  • clamping rings each overlap a pair of abutting peripheral annular flanges and press them axially against each other. In this way, can be dispensed with the use of special sealant.
  • the clamping rings each have two fixedly interconnected side walls which form between them a radially inwardly open peripheral channel, in each of which a pair of abutting peripheral ring flanges project.
  • the side walls of the clamping rings are inclined relative to the peripheral ring flanges so that, when the clamping rings are circumferentially reduced and the diameter rings are reduced, the peripheral ring flanges overlapped by the clamping rings are pressed axially against one another.
  • clamping rings are formed open and can be tightened by a turnbuckle in the circumferential direction.
  • FIG. 1 is a partially cutaway overall oblique view of an exemplary embodiment of the inventive particulate filter device
  • Fig. 4 and 5 each have an oblique view of a clamping ring and Fig. 6 is a sectional view of the detail VI of Fig. 3 in an enlarged view.
  • the particulate filter device shown in the drawing comprises in a known manner substantially a designated as a whole with G housing and housed in this particulate filter F. In the housing G may be further internals, but not for the understanding of the present invention is of concern are.
  • the housing G comprises a substantially tubular central section Z and an inlet cap E and an outlet cap A.
  • the inlet cap E is conical and has an inlet port ES of smaller diameter than the central section Z which is coaxial with the central section Z.
  • the outlet cap A is likewise conical and has a radial outlet outlet AS with respect to the central section Z, whose diameter is also smaller than that of the central section Z.
  • the inlet cap E and the outlet cap A are to be explained in more detail at each end of the central section Z in FIG Way releasably connected to the central portion Z releasably connected.
  • the particulate filter device is inserted into the exhaust line of an internal combustion engine, especially a diesel engine, wherein the particle-laden exhaust gas generated by the engine is introduced via the inlet port ES in the Pumblefiltervomchtung.
  • the particulate-free exhaust gas filtered in the particulate filter device is discharged via the outlet port AS into the exhaust system of the engine.
  • the assembly of the Pumblefiltervomchtung is normally carried out so that the actual particulate filter F and any other installations in the central portion Z of the housing G are used and then the inlet cap E and the outlet cap A are tightly connected to the central portion Z.
  • the central portion Z is extended at its or in the vicinity of its two axial ends radially outwardly, so that each results in an outwardly cantilevered peripheral annular flange 1 and 2 respectively.
  • the short pipe sections of the central section Z lying axially outside the peripheral ring flanges are designated by Z '.
  • the inlet cap E and the outlet cap A are provided at their ends facing the central portion Z with a peripheral annular flange 3 and 4, respectively.
  • the two clamping rings 10 each have two fixedly interconnected annular side walls 1 1 and 12, which form between them an inwardly open annular channel 13 with a radially inwardly widening open profile.
  • the profile may e.g. be essentially V-shaped.
  • the two clamping rings 10 are open in the circumferential direction and can each be pulled together in the circumferential direction by means of a turnbuckle 15.
  • the turnbuckles 15 are constructed in a manner known per se and have e.g. two attached to each one of the open ends of the clamping rings 10 abutment 16 for receiving a respective threaded nut 17 and a respective clamping screw 18, which latter interacts with the threaded nuts. By turning the clamping screws 18, the clamping rings 10 can be contracted or opened again in the circumferential direction.
  • the two side walls 1 1 1 and 12 of the clamping rings 10 surround the abutting memorisringflanschenproe lund 3 or 2 and 4 and are on these.
  • contraction of the clamping rings 10 in the circumferential direction and the diameter of the clamping rings 10 is reduced thereby the mutually abutting peripheral ring flanges 1 and 3 or 2 and 4 are pressed against each other so tightly that there is a sufficiently tight connection.
  • the inlet cap E and the outlet cap A are thereby stably fixed to the central portion Z of the housing G.
  • the circumferential annular flanges 1 and 2 of the central portion Z and the peripheral annular flanges 3 and 4 of the inlet cap E and the outlet cap A may also be shaped differently than in particular in FIG. It is only essential that the side walls 1 1 and 12 of the clamping rings 10 are slightly inclined relative to the peripheral ring flanges 1-4, so that when the clamping rings 10 contract in the circumferential direction and the resulting reduction in diameter results in a wedge effect, the adjacent annular flange pairs pressed axially against each other. It is understood that the central portion of the housing can be composed of two or more parts, which would then also held tightly by means of clamping rings. Finally, the inlet and outlet cap need not taper, but may be e.g. also have a substantially cylindrical shape.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Processes For Solid Components From Exhaust (AREA)

Abstract

A particulate filter device comprises a housing (G) and a particulate filter (F) accommodated therein. The housing (G) essentially comprises a tubular center section (Z) and an inlet flap (E) and an outlet flap (A) which inlet and outlet flaps (E, A) are arranged at respective axial ends of the tubular center section (Z) and taper away from the center section. The inlet flap (E) and the outlet flap (A) are detachably connected to the center section (Z) by means of retaining rings (10) in a sealing manner.

Description

Partikelfiltervorrichtung  particulate filter device
Die Erfindung betrifft eine Partikelfiltervorrichtung gemäss dem Oberbegriff des unabhängigen Anspruchs. The invention relates to a particulate filter device according to the preamble of the independent claim.
Moderne Verbrennungsmotoren, speziell Dieselmotoren werden heute vermehrt mit Partikelfiltervorrichtungen ausgestattet, welche unerwünschte Partikel aus den von den Motoren erzeugten Abgasströmen ausfiltern. Eine für solche Zwecke geeignete bekannte Partikelfiltervorrichtung ist z.B. im Dokument WO 2005/059324 AI beschrieben. Modern internal combustion engines, especially diesel engines are now increasingly equipped with particulate filter devices that filter out unwanted particles from the exhaust gas streams generated by the engines. A known particulate filter device suitable for such purposes is e.g. described in document WO 2005/059324 AI.
Aus Montagegründen ist es erforderlich, das Gehäuse der Partikelfiltervorrichtung aus zwei oder mehreren Teilen zusammenzusetzen. Dabei ergibt sich das Problem, einerseits eine stabile Verbindung zwischen den einzelnen Gehäuseteilen und anderseits eine ausreichende Dichtigkeit zu erreichen, wobei sowohl die Verbindungsfestigkeit als auch die Dichtigkeit über einen weiten Temperaturbereich gewährleistet sein muss. Gleichzeitig müssen diese Anforderungen schon allein aus Kostengründen mit möglichst geringem konstruktivem Aufwand erfüllt werden. For assembly reasons, it is necessary to assemble the housing of the particulate filter device of two or more parts. This results in the problem, on the one hand to achieve a stable connection between the individual housing parts and on the other hand, a sufficient tightness, with both the connection strength and the tightness must be ensured over a wide temperature range. At the same time, these requirements have to be fulfilled for cost reasons with the least possible constructive effort.
Ausgehend von einer Partikelfiltervorrichtung der gattungsgemässen Art besteht die Lösung dieser der Erfindung zugrundeliegenden Problematik in der erfindungs- gemässen Partikelfiltervorrichtung, wie sie im kennzeichnenden Teil des unabhängigen Anspruchs charakterisiert ist. Bevorzugte Ausführungsformen und Weiterbildungen der erfindungsgemässen Partikelfiltervorrichtung sind Gegenstand der abhängigen Ansprüche. Gemäss dem Hauptgedanken der Erfindung sind die Einlasskappe und die Auslasskappe mittels Spannringen lösbar mit dem Zentralabschnitt dichtend verbunden. Die Verbindung der Gehäuseteile mittels Spannringen ist konstruktiv einfach und sehr wirkungsvoll. Vorzugsweise sind dabei die Einlasskappe und die Auslasskappe an ihren dem Zentralabschnitt zugewandten Enden mit je einem auswärts ragenden Umfangsringflansch versehen. Ebenso ist der Zentralabschnitt an seinen oder in der Nähe seiner axialen Enden mit je einem auswärts ragenden Umfangsringflansch versehen. Je ein Umfangsringflansch des Zentralabschnitts liegt am Umfangsringflansch der Einlasskappe bzw. der Auslasskappe an. Und die Spannringe übergreifen je ein Paar aneinander anliegender Umfangsringflansche und pressen diese axial gegeneinander. Auf diese Weise kann auf den Einsatz spezieller Dichtungsmittel verzichtet werden. Based on a particulate filter device of the generic type, the solution to this problem underlying the invention in the inventive particulate filter device, as characterized in the characterizing part of the independent claim. Preferred embodiments and further developments of the particulate filter device according to the invention are the subject matter of the dependent claims. According to the main idea of the invention, the inlet cap and the outlet cap are detachably connected to the central section by means of clamping rings. The connection of the housing parts by means of clamping rings is structurally simple and very effective. Preferably, the inlet cap and the outlet cap are provided at their ends facing the central portion, each with an outwardly projecting peripheral annular flange. Likewise, the central portion is provided at its or near its axial ends, each with an outwardly projecting peripheral annular flange. Depending on a peripheral ring flange of the central portion abuts the peripheral ring of the inlet cap and the outlet cap. And the clamping rings each overlap a pair of abutting peripheral annular flanges and press them axially against each other. In this way, can be dispensed with the use of special sealant.
Gemäss einer bevorzugten Ausführungsform weisen die Spannringe je zwei fest miteinander verbundene Seitenwände auf, die zwischen sich einen radial nach innen offenen Umfangskanal bilden, in welchen je ein Paar aneinander anliegender Umfangs- ringflanschen hineinragen. According to a preferred embodiment, the clamping rings each have two fixedly interconnected side walls which form between them a radially inwardly open peripheral channel, in each of which a pair of abutting peripheral ring flanges project.
Besonders zweckmässig und vorteilhaft ist es dabei, wenn die Seitenwände der Spannringe relativ zu den Umfangsringflanschen geneigt verlaufen, so dass bei einer Umfangsverringerung und damit einhergehenden Durchmesserverringerung der Spannringe die von den Spannringen übergriffenen Umfangsringflansche axial ge- geneinander gepresst werden. It is particularly expedient and advantageous if the side walls of the clamping rings are inclined relative to the peripheral ring flanges so that, when the clamping rings are circumferentially reduced and the diameter rings are reduced, the peripheral ring flanges overlapped by the clamping rings are pressed axially against one another.
Ferner ist es konstruktiv besonders vorteilhaft, wenn die Spannringe offen ausgebildet sind und mittels eines Spannschlosses in Umfangsrichtung zusammengezogen werden können. Furthermore, it is structurally particularly advantageous if the clamping rings are formed open and can be tightened by a turnbuckle in the circumferential direction.
Im Folgenden wird die Erfindung anhand der Zeichnung näher erläutert. Es zeigen: In the following the invention will be explained in more detail with reference to the drawing. Show it:
Fig. 1 eine teilweise aufgeschnittene Gesamt-Schrägansicht eines Ausfuhrungsbeispiels der erfindungsgemässen Partikelfiltervorrichtung, 1 is a partially cutaway overall oblique view of an exemplary embodiment of the inventive particulate filter device,
Fig. 2 und 3 je eine Schrägansicht des Gehäuses der Partikelfiltervorrichtung, 2 and 3 each show an oblique view of the housing of the particulate filter device,
Fig. 4 und 5 je eine Schrägansicht eines Spannrings und Fig. 6 eine Schnittdarstellung des Details VI der Fig. 3 in vergrösserter Darstellung. Die in der Zeichnung dargestellte Partikelfiltervorrichtung umfasst in an sich bekannter Weise im Wesentlichen ein als Ganzes mit G bezeichnetes Gehäuse und einen in diesem untergebrachten Partikelfilter F. Im Gehäuse G können noch weitere Einbauten vorhanden sein, die jedoch für das Verständnis der vorliegenden Erfindung nicht von Belang sind. 4 and 5 each have an oblique view of a clamping ring and Fig. 6 is a sectional view of the detail VI of Fig. 3 in an enlarged view. The particulate filter device shown in the drawing comprises in a known manner substantially a designated as a whole with G housing and housed in this particulate filter F. In the housing G may be further internals, but not for the understanding of the present invention is of concern are.
Das Gehäuse G umfasst einen im Wesentlichen rohrförmigen Zentralabschnitt Z und eine Einlasskappe E sowie eine Auslasskappe A. Die Einlasskappe E ist konisch ausgebildet und weist einen zum Zentralabschnitt Z koaxialen Einlassstutzen ES geringeren Durchmessers als der Zentralabschnitt Z auf. Die Auslasskappe A ist ebenfalls konisch ausgebildet und weist einen bezüglich des Zentralabschnitts Z radialen Auslassstutzen AS auf, dessen Durchmesser ebenfalls geringer ist als der des Zentralabschnitts Z. Die Einlasskappe E und die Auslasskappe A sind an je einem Ende des Zentralabschnitts Z in noch näher zu erläuternder Weise dicht mit dem Zentralabschnitt Z lösbar verbunden. The housing G comprises a substantially tubular central section Z and an inlet cap E and an outlet cap A. The inlet cap E is conical and has an inlet port ES of smaller diameter than the central section Z which is coaxial with the central section Z. The outlet cap A is likewise conical and has a radial outlet outlet AS with respect to the central section Z, whose diameter is also smaller than that of the central section Z. The inlet cap E and the outlet cap A are to be explained in more detail at each end of the central section Z in FIG Way releasably connected to the central portion Z releasably connected.
Im praktischen Einsatz ist die Partikelfiltervorrichtung in die Auspuffleitung eines Verbrennungsmotors, speziell Dieselmotors eingesetzt, wobei das vom Motor erzeugte partikelbeladene Abgas über den Einlassstutzen ES in die Partikelfiltervomchtung eingeführt wird. Das in der Partikelfiltervorrichtung gefilterte, partikelfreie Abgas wird über den Auslassstutzen AS in das Auspuffsystem des Motors abgeführt. In practical use, the particulate filter device is inserted into the exhaust line of an internal combustion engine, especially a diesel engine, wherein the particle-laden exhaust gas generated by the engine is introduced via the inlet port ES in the Partikelfiltervomchtung. The particulate-free exhaust gas filtered in the particulate filter device is discharged via the outlet port AS into the exhaust system of the engine.
Der Zusammenbau der Partikelfiltervomchtung erfolgt normalerweise so, dass der eigentliche Partikelfilter F sowie allfällige weitere Einbauten in den Zentralabschnitt Z des Gehäuses G eingesetzt werden und dann die Einlasskappe E und die Auslass- kappe A dicht mit dem Zentralabschnitt Z verbunden werden. The assembly of the Partikelfiltervomchtung is normally carried out so that the actual particulate filter F and any other installations in the central portion Z of the housing G are used and then the inlet cap E and the outlet cap A are tightly connected to the central portion Z.
Um eine über weite Temperaturbereiche dichte Verbindung zwischen der Einlasskappe E bzw. der Auslasskappe A und dem Zentralabschnitt Z zu erreichen, sind diese drei Gehäuseteile gemäss der Erfindung speziell ausgebildet. Der Zentralabschnitt Z ist an seinen oder in der Nähe seiner beiden axialen Enden radial nach aussen erweitert, so dass sich je ein auswärts kragender Umfangsringflansch 1 bzw. 2 ergibt. Die axial ausserhalb der Umfangsringflansche liegenden kurzen Rohrabschnitte des Zent- ralabschnitts Z sind mit Z' bezeichnet. In gleicher Weise sind die Einlasskappe E und die Auslasskappe A an ihren dem Zentralabschnitt Z zugewandten Enden mit einem Umfangsringflansch 3 bzw. 4 ausgestattet. Im zusammengebauten Zustand des Gehäuses G liegen der Umfangsringflansch 1 des Zentralabschnitts Z und der Umfangsringflansch 3 der Einlasskappe E einerseits und der Umfangsringflansch 2 des Zent- ralabschnitts Z und der Umfangsringflansch 4 der Auslasskappe A anderseits dichtend aneinander. Zur Befestigung der Einlasskappe E und der Auslasskappe A am Zentralabschnitt Z sind zwei Spannringe 10 vorgesehen. In order to achieve a dense connection over a wide temperature range between the inlet cap E or the outlet cap A and the central section Z, these are three housing parts according to the invention specially designed. The central portion Z is extended at its or in the vicinity of its two axial ends radially outwardly, so that each results in an outwardly cantilevered peripheral annular flange 1 and 2 respectively. The short pipe sections of the central section Z lying axially outside the peripheral ring flanges are designated by Z '. In the same way, the inlet cap E and the outlet cap A are provided at their ends facing the central portion Z with a peripheral annular flange 3 and 4, respectively. In the assembled state of the housing G, the circumferential annular flange 1 of the central section Z and the peripheral annular flange 3 of the inlet cap E on the one hand and the peripheral annular flange 2 of the central section Z and the peripheral annular flange 4 of the outlet cap A are sealingly abutting one another. For fixing the inlet cap E and the outlet cap A at the central portion Z, two clamping rings 10 are provided.
Die beiden Spannringe 10 weisen je zwei fest miteinander verbundene ringförmige Seitenwände 1 1 und 12 auf, die zwischen sich einen nach innen offenen Ringkanal 13 mit einem sich radial einwärts erweiternden offenen Profil bilden. Das Profil kann z.B. im Wesentlichen V-förmig sein. Die beiden Spannringe 10 sind in Umfangsrich- tung offen und können je mittels eines Spannschlosses 15 in Umfangrichtung zusammengezogen werden. Die Spannschlösser 15 sind in an sich bekannter Weise auf- gebaut und weisen z.B. zwei an je einem der offenen Enden der Spannringe 10 befestigte Widerlager 16 zur Aufnahme je einer Gewindemutter 17 und je eine Spannschraube 18 auf, welch letztere mit den Gewindemuttern zusammenwirkt. Durch Verdrehen der Spannschrauben 18 können die Spannringe 10 in Umfangsrichtung zusammengezogen bzw. wieder geöffnet werden. The two clamping rings 10 each have two fixedly interconnected annular side walls 1 1 and 12, which form between them an inwardly open annular channel 13 with a radially inwardly widening open profile. The profile may e.g. be essentially V-shaped. The two clamping rings 10 are open in the circumferential direction and can each be pulled together in the circumferential direction by means of a turnbuckle 15. The turnbuckles 15 are constructed in a manner known per se and have e.g. two attached to each one of the open ends of the clamping rings 10 abutment 16 for receiving a respective threaded nut 17 and a respective clamping screw 18, which latter interacts with the threaded nuts. By turning the clamping screws 18, the clamping rings 10 can be contracted or opened again in the circumferential direction.
Die beiden Seitenwände 1 1 und 12 der Spannringe 10 umgreifen die aneinander anliegenden Umfangsringflanschenpaare lund 3 bzw. 2 und 4 und liegen auf diesen auf. Beim Zusammenziehen der Spannringe 10 in Umfangsrichtung verringert sich auch der Durchmesser der Spannringe 10. Dadurch werden die aneinander anliegenden Umfangsringflansche 1 und 3 bzw. 2 und 4 so fest gegen einander gepresst, dass sich eine ausreichend dichte Verbindung ergibt. Gleichzeitig werden dadurch die Einlasskappe E und die Auslasskappe A stabil am Zentralabschnitt Z des Gehäuses G befestigt. Durch die erfindungsgemässe Verbindung der einzelnen Teile des Gehäuses G mittels Spannringen und passend geformten Umfangsringflanschen an den Gehäuseteilen wird mit einfachsten Mitteln eine dichte Verbindung der Gehäuseteile erreicht, die auch grossen Temperaturschwankungen standhält und wobei auf spezielle Dichtungsmittel verzichtet werden kann. The two side walls 1 1 and 12 of the clamping rings 10 surround the abutting Umfangsringflanschenpaare lund 3 or 2 and 4 and are on these. When contraction of the clamping rings 10 in the circumferential direction and the diameter of the clamping rings 10 is reduced thereby the mutually abutting peripheral ring flanges 1 and 3 or 2 and 4 are pressed against each other so tightly that there is a sufficiently tight connection. At the same time, the inlet cap E and the outlet cap A are thereby stably fixed to the central portion Z of the housing G. The inventive connection of the individual parts of the housing G by means of clamping rings and appropriately shaped peripheral annular flanges on the housing parts is achieved with very simple means a tight connection of the housing parts, which withstands large temperature fluctuations and can be dispensed with special sealant.
Die Umfangsringflansche 1 und 2 des Zentralabschnitts Z und die Umfangsringflan- sche 3 und 4 der Einlasskappe E und der Auslasskappe A können auch anders als ins- besondere in Fig. 6 dargestellt geformt sein. Wesentlich ist lediglich, dass die Seitenwände 1 1 und 12 der Spannringe 10 relativ zu den Umfangsringflanschen 1-4 etwas geneigt verlaufen, so dass sich beim Zusammenziehen der Spannringe 10 in Um- fangsrichtung und der dadurch bewirkten Durchmesserreduktion eine Keilwirkung ergibt, welche die aneinanderliegenden Unfangsringflanschpaare axial gegeneinander presst. Es versteht sich, dass auch der Zentralabschnitt des Gehäuses aus zwei oder mehreren Teilen zusammengesetzt sein kann, welche dann ebenfalls mittels Spannringen dicht zusammengehalten würden. Und schliesslich müssen sich die Einlassund die Auslasskappe nicht verjüngen, sondern können z.B. auch eine im Wesentlichen zylindrische Gestalt aufweisen. The circumferential annular flanges 1 and 2 of the central portion Z and the peripheral annular flanges 3 and 4 of the inlet cap E and the outlet cap A may also be shaped differently than in particular in FIG. It is only essential that the side walls 1 1 and 12 of the clamping rings 10 are slightly inclined relative to the peripheral ring flanges 1-4, so that when the clamping rings 10 contract in the circumferential direction and the resulting reduction in diameter results in a wedge effect, the adjacent annular flange pairs pressed axially against each other. It is understood that the central portion of the housing can be composed of two or more parts, which would then also held tightly by means of clamping rings. Finally, the inlet and outlet cap need not taper, but may be e.g. also have a substantially cylindrical shape.

Claims

PatentansprUche Patent claims
1. Partikelfiltervorrichtung mit einem Gehäuse (G) und einem darin untergebrachten Partikelfilter (F), wobei das Gehäuse (G) im Wesentlichen einen rohrförmigen Zentralabschnitt (Z) und eine Einlasskappe (E) und eine Auslasskappe (A) umfasst, welche Einlass- und Auslasskappen (E, A) an je einem axialen Ende des rohrförmigen Zentralabschnitts (Z) angeordnet sind, dadurch gekennzeichnet, dass die Einlasskappe (E) und die Auslasskappe (A) mittels Spannringen (10) lösbar mit dem Zentralabschnitt (Z) dichtend verbunden sind. A particulate filter device comprising a housing (G) and a particulate filter (F) housed therein, the housing (G) comprising substantially a tubular central portion (Z) and an inlet cap (E) and an outlet cap (A) which inlet and Outlet caps (E, A) are arranged at each axial end of the tubular central portion (Z), characterized in that the inlet cap (E) and the outlet cap (A) by means of clamping rings (10) are releasably sealingly connected to the central portion (Z) ,
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Einlasskappe (E) und die Auslasskappe (A) an ihren dem Zentralabschnitt (Z) zugewandten Enden mit je einem auswärts ragenden Umfangsringflansch (3 bzw 4) versehen sind, dass der Zentralabschnitt (Z) an oder in der Nähe seiner axialen Enden mit je einem auswärts ragenden Umfangsringflansch (1, 2) versehen ist, dass je ein Umfangsringflansch (1 bzw. 2) des Zentralabschnitts (Z) am Umfangsringflansch (3 bzw. 4) der Einlasskap- pe (E) bzw. der Auslasskappe (A) anliegt, und dass die Spannringe (10) je ein Paar aneinander anliegender Umfangsringflansche (1, 3 bzw. 2, 4) übergreifen und axial gegeneinander pressen. 2. Device according to claim 1, characterized in that the inlet cap (E) and the outlet cap (A) at their the central portion (Z) facing ends each having an outwardly projecting peripheral annular flange (3 or 4) are provided, that the central portion (Z ) is provided at or in the vicinity of its axial ends with an outwardly projecting peripheral annular flange (1, 2), that per a Umfangsringflansch (1 or 2) of the central portion (Z) on the peripheral ring flange (3 or 4) of the inlet cap (E) and the outlet cap (A) is applied, and that the clamping rings (10) each engage over a pair of abutting peripheral annular flanges (1, 3 or 2, 4) and axially against each other.
3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die Spannringe (10) je zwei fest miteinander verbundene Seitenwände (1 1, 12) aufweisen, die zwischen sich einen radial nach innen offenen Umfangskanal (13) bilden, in welchen je ein Paar aneinander anliegender Umfangsringflanschen (1 , 3 bzw. 2, 4) hineinragen. 3. A device according to claim 2, characterized in that the clamping rings (10) each have two fixedly interconnected side walls (1 1, 12) which form between them a radially inwardly open peripheral channel (13), in each of which a pair together abut peripheral annular flanges (1, 3 and 2, 4) protrude.
4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Seitenwände (1 1, 12) der Spannringe (10) relativ zu den Umfangsringflanschen (1, 3 bzw. 2, 4) geneigt verlaufen, so dass bei einer Umfangsverringerung und damit einhergehenden Durchmesserverringerung der Spannringe (10) die von den Spannringen übergriffe- nen Umfangsringflansche (1 , 3 bzw. 2, 4) axial gegeneinander gepresst werden. 4. The device according to claim 3, characterized in that the side walls (1 1, 12) of the clamping rings (10) relative to the peripheral ring flanges (1, 3 or 2, 4) inclined, so that at a reduction in size and concomitant reduction in diameter the clamping rings (10) are axially pressed against each other by the circumferential ring flanges (1, 3 or 2, 4) which are overlapped by the clamping rings.
5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die Spannringe (10) offen ausgebildet sind und mittels eines Spannschlosses (15) in Umfangsrichtung zu- sammengezogen werden können. 5. Apparatus according to claim 4, characterized in that the clamping rings (10) are open and by means of a turnbuckle (15) in the circumferential direction to can be pulled together.
6. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass sich die Einlasskappe (E) und/oder die Auslasskappe (A) vom Zentralabschnitt (Z) weg verjüngen. 6. Device according to one of the preceding claims, characterized in that the inlet cap (E) and / or the outlet cap (A) tapering away from the central portion (Z).
PCT/CH2010/000144 2009-12-18 2010-06-02 Particulate filter device WO2011072406A1 (en)

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CH1945/09 2009-12-18
CH19452009 2009-12-18

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4367081A (en) * 1981-01-16 1983-01-04 Beckman Instruments, Inc. Particulate filter assembly
DE19959955A1 (en) * 1998-12-14 2000-06-21 Ecia Equip Composants Ind Auto Diesel engine exhaust gas purification system using catalyst and soot filtration sections, improves access to front and rear of particle filter to remove inevitable ash accumulations
US20060053779A1 (en) * 2004-09-08 2006-03-16 Belisle John I Joint for an engine exhaust system component
US20060191247A1 (en) * 2005-02-28 2006-08-31 Caterpillar Inc. Exhaust treatment device having submerged connecting flanges
WO2008128370A1 (en) * 2007-04-20 2008-10-30 Tehag Ag Device and method for connecting housing sections of soot particle filters
EP2110528A1 (en) * 2008-04-18 2009-10-21 Swenox AB Apparatus for treating an exhaust gas stream with removable module

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4367081A (en) * 1981-01-16 1983-01-04 Beckman Instruments, Inc. Particulate filter assembly
DE19959955A1 (en) * 1998-12-14 2000-06-21 Ecia Equip Composants Ind Auto Diesel engine exhaust gas purification system using catalyst and soot filtration sections, improves access to front and rear of particle filter to remove inevitable ash accumulations
US20060053779A1 (en) * 2004-09-08 2006-03-16 Belisle John I Joint for an engine exhaust system component
US20060191247A1 (en) * 2005-02-28 2006-08-31 Caterpillar Inc. Exhaust treatment device having submerged connecting flanges
WO2008128370A1 (en) * 2007-04-20 2008-10-30 Tehag Ag Device and method for connecting housing sections of soot particle filters
EP2110528A1 (en) * 2008-04-18 2009-10-21 Swenox AB Apparatus for treating an exhaust gas stream with removable module

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