SE506670C2 - Catalyst mounting arrangement - Google Patents

Catalyst mounting arrangement

Info

Publication number
SE506670C2
SE506670C2 SE9501556A SE9501556A SE506670C2 SE 506670 C2 SE506670 C2 SE 506670C2 SE 9501556 A SE9501556 A SE 9501556A SE 9501556 A SE9501556 A SE 9501556A SE 506670 C2 SE506670 C2 SE 506670C2
Authority
SE
Sweden
Prior art keywords
monolith
casing
gap
housing
attached
Prior art date
Application number
SE9501556A
Other languages
Swedish (sv)
Other versions
SE9501556L (en
SE9501556D0 (en
Inventor
Sven Melker Nilsson
Original Assignee
Sven Melker Nilsson
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20398107&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=SE506670(C2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sven Melker Nilsson filed Critical Sven Melker Nilsson
Priority to SE9501556A priority Critical patent/SE506670C2/en
Publication of SE9501556D0 publication Critical patent/SE9501556D0/en
Priority to PCT/SE1996/000499 priority patent/WO1996034188A1/en
Priority to JP8532022A priority patent/JPH11504094A/en
Priority to DE69629196T priority patent/DE69629196T2/en
Priority to EP96911153A priority patent/EP0840840B1/en
Priority to ES96911153T priority patent/ES2203689T3/en
Priority to KR1019970707550A priority patent/KR19990008026A/en
Priority to CN96193516A priority patent/CN1084429C/en
Priority to AU54120/96A priority patent/AU5412096A/en
Publication of SE9501556L publication Critical patent/SE9501556L/en
Publication of SE506670C2 publication Critical patent/SE506670C2/en

Links

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
    • F01N3/2842—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration specially adapted for monolithic supports, e.g. of honeycomb type
    • 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

Abstract

The invention concerns a carrier arrangement for catalytic converters comprising a catalyst body (1) consisting of a monolith (3) formed of carrier members desined to support a catalytic material, and of a metal casing (2, 9) enclosing the monolith (3). The interior width of the casing (2, 9) exceeds that of the monlith (3) whereby a gap (6, 11) forms between the casing (2, 9) and the monolith (3). This gap (6, 11) is bridged at least in the area of a section (7, 10) extending circumferentially around the monolith (3), the monolith (3) being attached to the casing (2, 9) along said section (7, 10).

Description

506 10 15 20 25 30 35 2 i så nära beröring med avgaserna och dessutom har mycket större godstjocklek, värmes upp och expanderar lång- sammare. Monolitens expansion vid uppvärmningen hindras på detta sätt av höljet, och stora radiella tryckkrafter uppkommer, som skapar deformationer i monoliten. Vid uppnående av ovannämnda höga temperaturer minskar även metallens hàllfasthet väsentligt, ofta ned till omkring 10% av dess hàllfasthet vid rumstemperatur, vilket för- värrar nämnda deformationer och ytterligare reducerar monolitens livslängd. 506 10 15 20 25 30 35 2 in such close contact with the exhaust gases and in addition has a much greater wall thickness, heats up and expands more slowly. The expansion of the monolith during heating is prevented in this way by the casing, and large radial compressive forces arise, which create deformations in the monolith. When the above-mentioned high temperatures are reached, the strength of the metal also decreases significantly, often down to about 10% of its strength at room temperature, which aggravates said deformations and further reduces the life of the monolith.

När motorn stänges av, och avgaserna svalnar, gäller det omvända, d v s monolitens band svalnar snabbare än det omgivande, tjockare höljet. Därigenom kan stora drag- krafter uppkomma mellan monolitens yttersta parti och höljet.When the engine is switched off, and the exhaust gases cool down, the reverse is true, ie the band of the monolith cools down faster than the surrounding, thicker housing. As a result, large tensile forces can arise between the outermost portion of the monolith and the casing.

Fastsättningen av metallmonoliter i sina höljen är av ovan beskriven orsak ett mycket stort problem. Många olika lösningar har föreslagits och provats men oftast med dåligt resultat. Det finns utföranden som fungerar och som utvecklats av exempelvis det tyska företaget Emmitec GMBH, men dessa utföranden är relativt komplicerade och dyra.The fixing of metal monoliths in their casings is a very big problem for the reason described above. Many different solutions have been proposed and tried, but often with poor results. There are designs that work and have been developed by, for example, the German company Emmitec GMBH, but these designs are relatively complicated and expensive.

Gemensamt för alla dessa lösningar är att de gäller för monoliter, där metallbanden i de olika skikten samman- fogats genom lödning, varvid det yttersta skiktet lödes fast i den omslutande manteln.Common to all these solutions is that they apply to monoliths, where the metal strips in the various layers are joined together by soldering, whereby the outermost layer is soldered to the enclosing sheath.

Genom föreliggande uppfinning har fastsättnings- problemet lösts på ett enkelt, säkert och ekonomiskt sätt.Through the present invention, the fastening problem has been solved in a simple, safe and economical way.

Arrangemanget fungerar på metallmonoliter, som lötts ihop på ovan angivet sätt men också pá metallmonoliter som sammanfogats på annat sätt utan lödning. Det som utmärker detta fästarrangemang framgår av efterföljande patentkrav.The arrangement works on metal monoliths, which are soldered together in the manner specified above, but also on metal monoliths that are joined together in another way without soldering. What characterizes this fastening arrangement is stated in the following claims.

Uppfinningen skall i det följande närmare beskrivas med hänvisning till de bifogade ritningarna, på vilka fig 1 visar i bruten vy ett schematiskt längdsnitt genom en katalysatorkropp, fig 2 på samma sätt schematiskt ett längdsnitt genom en katalysatorkropp med en variant på fästarrangemanget enligt uppfinningen och fig 3 i större 10 15 20 25 30 35 670 3 skala en del av infästningen enligt uppfinningen.The invention will be described in more detail below with reference to the accompanying drawings, in which Fig. 1 shows in broken view a schematic longitudinal section through a catalyst body, Fig. 2 similarly schematically a longitudinal section through a catalyst body with a variant of the fastening arrangement according to the invention and Fig. 3 on a larger scale part of the attachment according to the invention.

I fig 1 visas ett grundutförande av uppfinningen. En katalysatorkropp 1 består av ett metallhölje 2, som om- sluter en s k monolit 3. Denna består i sin tur av bärar- element för katalytiskt material, och dessa utgöres av kring varandra lindade, omväxlande plana och vàgiga metallband 4 för bildande av genomströmningskanaler 5 genom katalysatorkroppen 1. Monoliten 3 har en vidd eller diameter, som är något mindre än höljets 2 invändiga vidd.Fig. 1 shows a basic embodiment of the invention. A catalyst body 1 consists of a metal casing 2, which encloses a so-called monolith 3. This in turn consists of support elements for catalytic material, and these consist of alternately wound, alternating flat and wavy metal strips 4 for forming flow channels 5. through the catalyst body 1. The monolith 3 has a width or diameter which is slightly smaller than the internal width of the housing 2.

Härvid bildas mellan höljet 2 och monoliten 3 en spalt 6, som är olika stor inom olika temperaturområden.In this case, a gap 6 is formed between the casing 2 and the monolith 3, which is of different size within different temperature ranges.

Enligt uppfinningen är höljet 2 försett med åtminstone ett, i det på ritningen visade utförandet tvâ inpressade partier 7, vid vilka spalten 6 runt om monoliten 3 är eliminerad. Vid dessa partier 7 är höljet 2 och monoliten 3 sammanfästa vid varandra, lämpligen endast på enstaka ställen 8, genom t ex lödning eller svetsning.According to the invention, the housing 2 is provided with at least one, in the embodiment shown in the drawing, two pressed-in portions 7, in which the gap 6 around the monolith 3 is eliminated. At these portions 7 the casing 2 and the monolith 3 are fastened to each other, suitably only in individual places 8, by eg soldering or welding.

När monoliten 3 av genom densamma strömmande avgaser upphettas, expanderar monoliten 3 snabbare än höljet 2, dels beroende på monolitens 3 mer omedelbara kontakt med de varma avgaserna, dels genom att höljet 2 har större godstjocklek. Denna expansion kan nu ske i huvudsak fritt så när som på vid de inpressade partierna 7, där en viss deformation av monolitens 3 yttersta band 4 kommer att ske. Utefter huvuddelen av monolitens 3 yta kommer således inga tryckkrafter att uppstå. När höljet 2 och monoliten 3 åter svalnar, kan monoliten 3 åter krympa och på så sätt på nytt öppna en spalt 6.When the monolith 3 is heated by exhaust gases flowing through it, the monolith 3 expands faster than the casing 2, partly due to the more immediate contact of the monolith 3 with the hot exhaust gases, and partly because the casing 2 has a greater wall thickness. This expansion can now take place substantially freely except at the pressed-in portions 7, where a certain deformation of the outermost band 4 of the monolith 3 will take place. Thus, no compressive forces will arise along the main part of the surface of the monolith 3. When the casing 2 and the monolith 3 cool down again, the monolith 3 can shrink again and thus re-open a gap 6.

Genom att monoliten 3 endast utsättes för lokala smärre deformationer vid de inpressade partierna 7 och i övrigt kan expandera och kontrahera fritt, kan kataly- satorkroppen 1 arbeta intakt under längre tid än vad som hittills varit möjligt, varigenom således dess livslängd ökar.Because the monolith 3 is only exposed to local minor deformations at the pressed-in portions 7 and can otherwise expand and contract freely, the catalyst body 1 can operate intact for a longer time than has hitherto been possible, thus increasing its service life.

Ytterligare förbättring kan man uppnå genom att låta ett eller ett par av de yttersta banden 4 ej vara hop- fogade med de innanför belägna banden utefter hela sin sne sin 10 15 20 25 30 35 4 axiella längd. De kan i stället vara hopfogade på ett litet avstånd i sidled från infästningsställena 8. Då monoliten 3 avkyles, och en kontraktion uppstår, blir därmed dragkrafterna vid infästningsställena 8 ej så markanta, därför att de yttersta banden 4 tillàtes att fjädra mellan sina sammanbindningsställen.Further improvement can be achieved by not allowing one or a pair of the outermost bands 4 to be joined to the inner bands along their entire axis along their axial length. Instead, they can be joined at a small distance laterally from the attachment points 8. When the monolith 3 cools, and a contraction occurs, the tensile forces at the attachment points 8 do not become so marked, because the outermost bands 4 are allowed to spring between their connection points.

I fig 2 och 3 visas en variant av fästarrangemanget enligt uppfinningen. Såsom hölje tjänar här ett avgasrör 9. Monoliten 3 är vid detta utförande vid varje ände försedd med en runtom gående och utanför monolitens 3 respektive ände sig sträckande krage 10, som är fäst vid avgasröret 9. Vid monoliten 3 är kragarna 10 på samma sätt som vid utförandet i fig 1 lämpligen endast fästa på några enskilda ställen 11. Kragarna 10 överbryggar en spalt 11 mellan avgasröret 9 och monoliten 3, vilken således vid uppvärmning och avkylning har förhållandevis fritt utrymme att expandera respektive kontrahera, samtidigt som den är väl förankrad inne i avgasröret 9.Figures 2 and 3 show a variant of the fastening arrangement according to the invention. An exhaust pipe 9 serves here as a housing. In this embodiment, the monolith 3 is provided at each end with a collar 10 extending around and outside the respective end of the monolith 3, which is attached to the exhaust pipe 9. At the monolith 3, the collars 10 are in the same way as in the embodiment in Fig. 1 suitably only fasten in a few individual places 11. The collars 10 bridge a gap 11 between the exhaust pipe 9 and the monolith 3, which thus when heated and cooled has relatively free space to expand and contract, while it is well anchored inside the exhaust pipe 9.

Uppfinningen är icke begränsad till de visade och beskrivna utförandena utan kan varieras på flera sätt inom ramen för efterföljande patentkrav. Exempelvis kan spalten 6 i stället för inpressningarna 7 elimineras genom inför- ande av ett eller flera mellanlägg mellan höljet 2 och monoliten 3.The invention is not limited to the embodiments shown and described but can be varied in several ways within the scope of the appended claims. For example, instead of the indentations 7, the gap 6 can be eliminated by inserting one or more spacers between the housing 2 and the monolith 3.

Claims (5)

10 15 20 25 30 35 m <:> o\ c» -1 o 5 PATENTKRAV10 15 20 25 30 35 m <:> o \ c »-1 o 5 PATENTKRAV 1. Fästarrangemang för katalysatorer med en kataly- satorkropp (1), som är uppbyggd av en monolit (3) av bärarelement för katalytiskt material, vilka bärarelement utgöres av kring varandra lindade, omväxlande plana och Vågiga metallband (4) för bildande av genomströmnings- kanaler (5) genom katalysatorkroppen (1), och ett monoliten (3) omslutande metallhölje (2,9) med större godstjocklek än metallbanden (4), k ä n n e t e c k n a t d ä r a V, att höljets (2,9) invändiga Vidd är större än monolitens (3) Vidd, så att en spalt (6,ll) bildas mellan höljet (2,9) och monliten (3), och att denna spalt (6,ll) överbryggas vid åtminstone ett parti (7,l0) runtom monoliten (3), vid Vilket parti (7,l0) monoliten (3) är fäst vid höljet (2,9).Fastening arrangement for catalysts with a catalyst body (1), which is built up of a monolith (3) of support elements for catalytic material, which support elements consist of mutually wound, alternating planes and corrugated metal strips (4) for forming a flow-through channels (5) through the catalyst body (1), and a monolithic (3) enclosing metal casing (2,9) with a greater wall thickness than the metal strips (4), characterized in that the inner width of the casing (2,9) is larger than the width of the monolith (3), so that a gap (6, 11) is formed between the housing (2,9) and the monolith (3), and that this gap (6, 11) is bridged at at least one portion (7, 10) around the monolith (3), at which portion (7, 10) the monolith (3) is attached to the casing (2,9). 2. Arrangemang enligt kravet 1, k ä n n e t e c k - n a t d ä r a V, att spalten (6) överbryggas vid nämnda parti (7) genom radiell inpressning av höljet (2).Arrangement according to claim 1, characterized in that the gap (6) is bridged at said portion (7) by radial pressing of the housing (2). 3. Arrangemang enligt kravet l, k ä n n e t e c k - n a t d ä r a V, att monoliten (3) vid nämnda parti (7) är fäst vid höljet (2) endast på några ställen (8) runt denna.Arrangement according to claim 1, characterized in that the monolith (3) at said portion (7) is attached to the housing (2) only in a few places (8) around it. 4. Arrangemang enligt kravet 1, k ä n n e t e c k - n a t d ä r a V, att monoliten (3) vid Varje ände är försedd med en runtom monoliten (3) sig sträckande krage (10), och höljet (9) samt är fäst vid detta.Arrangement according to claim 1, characterized in that the monolith (3) is provided at each end with a collar (10) extending around the monolith (3), and the housing (9) and is attached thereto. . 5. Arrangemang enligt kravet 4, k ä n n e t e c k - som överbryggar spalten (ll) mellan monoliten (3) n a t d ä r a V, att kragen (10) är fäst vid monoliten (3) endast pá några ställen (12) runt denna.Arrangement according to claim 4, characterized by bridging the gap (ll) between the monolith (3) n a t h e r a V, that the collar (10) is attached to the monolith (3) only in some places (12) around it.
SE9501556A 1995-04-27 1995-04-27 Catalyst mounting arrangement SE506670C2 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
SE9501556A SE506670C2 (en) 1995-04-27 1995-04-27 Catalyst mounting arrangement
AU54120/96A AU5412096A (en) 1995-04-27 1996-04-18 A catalyst carrier arrangement
CN96193516A CN1084429C (en) 1995-04-27 1996-04-18 Catalyst carrier arrangement
DE69629196T DE69629196T2 (en) 1995-04-27 1996-04-18 CATALYST ARRANGEMENT
JP8532022A JPH11504094A (en) 1995-04-27 1996-04-18 Catalyst support device
PCT/SE1996/000499 WO1996034188A1 (en) 1995-04-27 1996-04-18 A catalyst carrier arrangement
EP96911153A EP0840840B1 (en) 1995-04-27 1996-04-18 A catalyst carrier arrangement
ES96911153T ES2203689T3 (en) 1995-04-27 1996-04-18 CATALYST SUPPORT ASSEMBLY.
KR1019970707550A KR19990008026A (en) 1995-04-27 1996-04-18 Catalyst carrier device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9501556A SE506670C2 (en) 1995-04-27 1995-04-27 Catalyst mounting arrangement

Publications (3)

Publication Number Publication Date
SE9501556D0 SE9501556D0 (en) 1995-04-27
SE9501556L SE9501556L (en) 1996-10-28
SE506670C2 true SE506670C2 (en) 1998-01-26

Family

ID=20398107

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9501556A SE506670C2 (en) 1995-04-27 1995-04-27 Catalyst mounting arrangement

Country Status (9)

Country Link
EP (1) EP0840840B1 (en)
JP (1) JPH11504094A (en)
KR (1) KR19990008026A (en)
CN (1) CN1084429C (en)
AU (1) AU5412096A (en)
DE (1) DE69629196T2 (en)
ES (1) ES2203689T3 (en)
SE (1) SE506670C2 (en)
WO (1) WO1996034188A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1096542C (en) * 1997-03-21 2002-12-18 凯米拉梅塔尔卡特公司 Improvements in catalytic reactors
EP1012454B1 (en) * 1997-03-21 2004-01-14 Kemira Metalkat Oy Improvements in catalytic reactors
SE9704265L (en) * 1997-11-21 1998-10-19 Nilcon Eng Ab Catalyst with cam flange for clamping
SE522537C2 (en) 2000-03-21 2004-02-17 Kemira Metalkat Oy Catalyst support with jacket
DE60206308T2 (en) * 2001-02-12 2006-03-16 Ecocat Oy Process for producing a corrugated sheet reactor packing
JP5080306B2 (en) * 2008-02-14 2012-11-21 エコキャット オサケユイチア Improved catalytic reactor
DE102018201738A1 (en) * 2018-02-05 2019-08-08 Continental Automotive Gmbh Catalyst and process for its preparation

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE44582T1 (en) * 1985-07-25 1989-07-15 Interatom BRACKET FOR A METALLIC EXHAUST CATALYST SUPPORT BODY AND METHOD OF MANUFACTURE.
JPH0721855Y2 (en) * 1987-07-10 1995-05-17 日産自動車株式会社 Catalytic converter device
DE8812762U1 (en) * 1988-10-11 1989-06-29 Emitec Emissionstechnologie
DE3926072C2 (en) * 1989-08-07 1994-01-13 Emitec Emissionstechnologie Exhaust gas purification catalyst with elastic elements to compensate for longitudinal expansion
DE3930680A1 (en) * 1989-09-14 1991-03-28 Behr Gmbh & Co Radial and axial movements of expanding exhaust purifier - matrix in housing are permitted by fixed and mobile supports incorporating spring strips
JPH0634927B2 (en) * 1989-11-16 1994-05-11 トヨタ自動車株式会社 Metal carrier for exhaust gas purification catalyst

Also Published As

Publication number Publication date
KR19990008026A (en) 1999-01-25
CN1182468A (en) 1998-05-20
EP0840840A1 (en) 1998-05-13
WO1996034188A1 (en) 1996-10-31
DE69629196D1 (en) 2003-08-28
DE69629196T2 (en) 2004-02-19
JPH11504094A (en) 1999-04-06
AU5412096A (en) 1996-11-18
ES2203689T3 (en) 2004-04-16
EP0840840B1 (en) 2003-07-23
CN1084429C (en) 2002-05-08
SE9501556L (en) 1996-10-28
SE9501556D0 (en) 1995-04-27

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