JP2004202358A

JP2004202358A - Part of exhaust gas cleaning apparatus and method for manufacturing the part

Info

Publication number: JP2004202358A
Application number: JP2002374113A
Authority: JP
Inventors: Keiichi Shimizu; 慶一志水; Hirobumi Tashiro; 博文田代
Original assignee: Toyo Kohan Co Ltd
Current assignee: Toyo Kohan Co Ltd
Priority date: 2002-12-25
Filing date: 2002-12-25
Publication date: 2004-07-22
Anticipated expiration: 2022-12-25
Also published as: JP4297685B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a part of an exhaust gas cleaning apparatus in which a hollow body having a meshed cross section is used and which can be manufactured easily at a low cost. <P>SOLUTION: The hollow body 5 having the meshed cross section is formed by spirally winding a finned perforated metal plate 1 on which a plurality of holes 3 are formed by bending fins toward one side of a long-length flat belt-like sheet metal. The body 5 is inserted into a cylindrical body 16 having a through-hole 18 at the bottom 21 or on the partition wall and joined to the body 16 to obtain the objective part of the exhaust gas cleaning apparatus. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、自動車のエンジン等の内燃機関から排出される排ガスを浄化する装置に用いるのに最適なフィン付き多孔金属板とその製造方法およびこのフィン付き多孔金属板を用いた担体やフィルタ等の排ガス浄化装置用部品並びにこの排ガス浄化装置用部品の製造方法に関する。
【０００２】
【従来の技術】
自動車のエンジンや発電機等の内燃機関の排ガス浄化装置には、耐熱性のステンレス鋼板等の金属鋼からなる円筒状のケーシング内に、同金属鋼材からなる円柱状のハニカム体を嵌入したメタル担体が使用されている。
【０００３】
このような構成の従来のメタル担体は、一般的には、帯状の金属薄板からなる平薄板と、この平薄板に波付け加工した波薄板とを重ねた状態で渦巻き状に巻取って製造したハニカム体を、円筒状の金属ケーシングに嵌入し、その後、前記網目状断面を有する有空体の平薄板と波薄板との接触部、およびハニカム体とケーシングとを蝋付け、溶接、拡散接合などの方法により接合して製造されている。更に、各種の触媒をコートして、浄化機能を有する排ガス浄化装置とされる。
【０００４】
【発明が解決しようとする課題】
しかしながら、このような構成のメタル担体の製造方法において、平薄板と波薄板を重ねた状態で渦巻き状に巻取る作業は、両薄板の曲げ弾性が異なることや、前記平薄板と波薄板との接触部分における摩擦係数の関係等から、安定した作業が行なえず、製造するのが極めて困難であった。
【０００５】
例えば、中間部品として製造されるハニカム体の軸方向両端部において、平薄板および波薄板の巻取り力が異なって作用した場合、渦巻き状に巻取られたハニカム体は適正な円柱形状とならずに、当該ハニカム体の軸方向における一端側はその巻取りの中心部を筍状に突出するとともに、他端部は擂り鉢状に凹入した形状（筍状）となるといった問題（巻回時の巻きズレ問題）があった。
【０００６】
そこで、本発明は、網目状断面を有する有空体からなる排ガス浄化装置用部品並びにその製造方法を安価且つ容易なものとして提供することを目的とするものである。
【０００７】
【課題を解決するための手段】
前述した目的を達成するため、本発明の排ガス浄化装置用部品は、長尺な平帯状の金属薄板から片面側へフィンを折曲することにより複数の孔が形成されてなるフィン付き多孔金属板を渦巻き状に巻回して形成された網目状断面を有する有空体を、底部あるいは隔壁に貫通孔を有する円筒状筒体に嵌合あるいは、さらに有空体と円筒状筒体と接合してなることを特徴とし、または、前記孔は前記金属薄板からフィンをいずれかの面側へ折曲して形成されてなることを特徴とする。また、前記貫通孔は、円状、楕円形、正方形、長方形、菱形あるいは多角形であることが望ましい。
【０００８】
また、本発明の排ガス浄化装置用部品は、長尺な平帯状の金属薄板から片面側へフィンを折曲することにより複数の孔が形成されてなるフィン付き多孔金属板を渦巻き状に巻回して形成された網目状断面を有する有空体に、貫通棒を該フィン付き多孔金属板の最外周面から該網目状断面の中心を通過して貫通しており、天部及び底部のない円筒状筒体に該有空体を嵌合し、該円筒状筒体の側面と該貫通棒とを接合してなることを特徴とし、または、前記孔は前記金属薄板からフィンをいずれかの面側へ折曲して形成されてなることを特徴とする。この場合、前記フィン付き多孔金属板は、長尺な平帯状の金属薄板上に略Ｕ字状の切込み線を複数形成し、前記各切込み線に基づいて形成された舌片部を当該金属薄板のいずれかの面側へそれぞれ選択的に折曲させて前記折り曲げ方向へ突出するフィンを形成するとともに、前記切込み線に囲繞された部分を開口させて、前記フィンを備えた孔を形成することが望ましい。
【０００９】
本発明の排ガス浄化装置用部品の製造方法は、フィン付き多孔金属板を渦巻き状に巻回して形成された網目状断面を有する有空体を収納する円筒状筒体内に有してなる排ガス浄化装置用部品の製造方法であって、長尺な平帯状の金属薄板から片面側へフィンを折曲することにより複数の孔が形成されてなるフィン付き多孔金属板を収納する円筒状筒体の内径寸法よりも小径な渦巻き状に巻回し、次いで、底部あるいは隔壁に貫通孔を有する円筒状筒体に勘合し、該円筒状筒体の内面と有空体とを接合してなることを特徴とし、または、前記孔は前記金属薄板からフィンをいずれかの面側へ折曲して形成されてなることを特徴とする。この場合、前記フィン付き多孔金属板は、長尺な平帯状の金属薄板上に略Ｕ字状の切込み線を複数形成し、前記各切込み線に基づいて形成された舌片部を当該金属薄板のいずれかの面側へそれぞれ選択的に折曲させて前記折り曲げ方向へ突出するフィンを形成するとともに、前記切込み線に囲繞された部分を開口させて、前記フィンを備えた孔を形成することが望ましい。
【００１０】
また、本発明の排ガス浄化装置用部品の製造方法は、フィン付き多孔金属板を渦巻き状に巻回して形成された網目状断面を有する有空体を収納する円筒状筒体内に有してなる排ガス浄化装置用部品の製造方法であって、長尺な平帯状の金属薄板から片面側へフィンを折曲することにより複数の孔が形成されてなるフィン付き多孔金属板を渦巻き状に巻回し、前記フィン付き多孔金属板の少なくとも一部および／または前記網目状断面を有する有空体の一部を接合することにより円柱状の網目状断面を有する有空体を形成し、次いで、底部２１あるいは隔壁に貫通孔を有する円筒状筒体に嵌合し、該円筒状筒体の内面と有空体とを接合してなることを特徴とし、または、前記孔は前記金属薄板からフィンをいずれかの面側へ折曲して形成されてなることを特徴とする。
【００１１】
【発明の実施の形態】
まず、本発明の排ガス浄化装置用部品の実施形態について、図１０および図１１を用いて説明する。
【００１２】
本発明の排ガス浄化装置用部品１５は、主に、自動車のエンジン等の内燃機関から排出される排ガスを浄化するための装置であり、担体やフィルタとして用いられるものである。その基本的な構成は、従来例において記載したような金属板からなる円筒状の円筒状筒体１６内に円柱形状の有空体５を嵌入した構成となっている。
【００１３】
そして、本発明の排ガス浄化装置用部品１５は、前述の製造方法によって作製された前記フィン付き多孔金属板１（図１参照）を用いて形成した有空体５を円筒状筒体１６内に有する構成とされている。
【００１４】
次に、２つの実施形態を説明する。
【００１５】
第１の実施形態は、図１０および図１に示すように、フィン付き多孔金属板１のフィン付き孔３のフィン８を金属薄板２の同一面側に突出させたフィン付き多孔金属板１のみを渦巻き状に巻回して形成した、円柱形状の有空体５を用いたものである。
【００１６】
このフィン付き多孔金属板１は、長尺な平帯状に形成された金属薄板２（金属箔を含む。以下、同じ）に、その片面側へ突出するフィン８を備えた孔３（以下、「フィン付き孔」）が形成されているものである。フイン３があることで、そのフィン長さにより、間隔を自由に調整することが可能となる。この金属薄板２に使う金属として、鉄−ニッケル−クロム合金、鉄−ニッケル合金、鉄−クロム−アルミニウム合金、あるいは鉄−クロム合金で表現される一般的なステンレスが適用できる。ここで、形成とは、例えば、フィン付き孔３のみが規則性を以て配列形成されている場合、フィンを備えない孔４（以下、「フィン無し孔」）との関係において何らかの規則性を以て整列形成されている場合の他、規則性を有しないように無作為に形成されている場合をも含む。
【００１７】
このように、フィン付き孔３、フィン無し孔４など、多数の孔を設けているため、排ガス浄化装置としてしようした場合、暖気運転が短くてすむ。
【００１８】
図１乃至図３に示すフィン付き多孔金属板１は、後に渦巻き状に巻回され、後述する排ガス浄化装置用部品に嵌入されるものであり、前述した金属薄板２には、フィン付き孔３とフィン無し孔４とが網目状断面を有する有空体５（以下、有空体５という。図１０参照）の巻回方向に交互に配列形成されて、列Ｌが構成されている。この列Ｌは、図３に示すように、隣位する列Ｌに形成されたフィン付き孔３同士またはフィン無し孔４同士が隣り合わないように調整して、複数本を近接させて形成されており、幅Ｒが構成されている。そして、前記平帯状の金属薄板２には、この幅Ｒが所定間隔を設けて複数形成されている。
【００１９】
ここで、前記フィン無し孔４は、孔の整列方向に対し直交するようにして形成された細いライン状の孔部６である。そして、フィン付き孔３の孔部７の形状は略矩形状とされており、この略矩形状の孔部７は金属薄板２の同一面側に突出するフィン８を備えている。前記フィン８は平面状の小片であり、その面を前記巻回方向に指向させるようにして形成されるものであって、本実施形態においては、前記孔部７を構成する四辺のうち、前述の巻回方向上流側の一辺に連設されている。
【００２０】
なお、前記フィン８の連接辺は、孔部７の巻回方向上流側に限るものではなく、下流側の一辺であってもよい。また、例えば、図４に示すように、巻回方向上流側の一辺にフィン８を連設させて備える孔６と、巻回方向下流側の一辺にフィン８を連設させて備える孔部７とを規則的に同一の列Ｌ上に配列させてもよい。さらには、各列Ｌの各種孔の配列は異なるものであってもよい。
【００２１】
上記以外のフィン付き多孔金属板１は、長尺な平帯状の金属薄板２のいずれかの面へ突出するフィン付き孔３が整列形成されているものである。
【００２２】
前述のように、この場合においても、フィン付き孔３とフィン無し孔４の配列、さらに、フィン付き孔３においてはフィン８の連接辺を孔部７の上流側の一辺とするフィン付き孔３Ａと下流側の一辺とするフィン付き孔３Ｂの配列、そして、そのフィン８を金属薄板２の一方の面に突出させたフィン付き孔３Ｃと他方の面に突出させたフィン付き孔３Ｄの配列は規則性を有していてもよいし、無作為であってもよい。
【００２３】
図５には、フィン付き多孔金属板１として、前記フィン付き孔３とフィン無し孔４とが前記有空体５の巻回方向に交互に配列形成されており、さらに、前記フィン付き孔３は、フィン８の連接辺を孔部７の上流側の一辺とし、そのフィン８を金属薄板２の一方の面に突出させたフィン付き孔３Ｃと他方の面に突出させたフィン付き孔３Ｄとが交互に配列されているフィン付き多孔金属板１を示している。
【００２４】
次に、このフィン付き多孔金属板１の製造方法について説明する。
【００２５】
基本的には、図６に示すように、前述した２つのフィン付き多孔金属板１に形成された、前記フィン無し孔４については、長尺な平帯状の金属薄板２上に細いライン状の孔６を穿孔する。また、前記フィン付き孔３については、略Ｕ字状の切込み線を形成し、前記各切込み線に基づいて形成された舌片部９を前記切込み線の両端部を最短距離で結ぶ仮想線部分（図６に一点鎖線で示す）で当該金属薄板２のいずれかの面側へそれぞれ選択的に折曲させて前記折り曲げ方向へ突出するフィン８を形成するとともに、前記切込み線に囲繞された部分を開口させてフィン付き孔３の孔部７を形成する。
【００２６】
より詳しくは、図７および図８に示すように、前記略Ｕ字状の切込み線を形成するとともに前記切込み線に基づいて形成された舌片部９を前記切込み線の両端部を最短距離で結ぶ仮想線部分をもって当該金属薄板２の当該穿孔ローラ１０の配設側と反対側となる外側へ折曲させうる突起状刃材１１（以下、フィン付き孔用刃材１１Ａ）、および、細いライン状の孔６を穿孔しうる突起状刃材１１（以下、フィン無し孔用刃材１１Ｂ）を、同一の列Ｌ上の前記孔の配列および前記幅Ｒの配列に従って外周面に設けた穿孔ローラ１０と、前記穿孔ローラ１０と対向し、前記穿孔ローラ１０に形成された前記フィン付き孔用刃材１１Ａとこの突起状刃材１１により折曲された前記舌片部９、およびフィン無し孔用刃材１１Ｂを一時的に収容可能とする複数の溝部１２を外周面に設けた受けローラ１３との間に長尺な平帯状の金属薄板２を連続的に供給し、前記両ローラ１０，１３を回転駆動させる。そして、前記フィン無し孔用刃材１１Ｂを用いて前記金属薄板２にフィン無し孔４を穿孔する。また、フィン付き孔用刃材１１Ａを用いて前記金属薄板２に略Ｕ字状の切り込み線を形成して前記切込み線に基づいて形成された前記舌片部９を当該金属薄板２の前記穿孔ローラ１０の外側へ折曲してフィン８を形成するとともに、前記切込み線に囲繞された部分を開口させて孔部７を形成する。
【００２７】
この製造方法により、最初に記述したフィン付き多孔金属板１に示した、フィン付き孔３のフィン８を金属薄板２の同一面側に突出させたフィン付き多孔金属板１を簡単かつ効率的に形成することができる。
【００２８】
また、後で記述したフィン付き多孔金属板１に示した、フィン付き孔３のフィン８を金属薄板２の両面側に突出させたフィン付き多孔金属板１は以下のようにして製造することができる。
【００２９】
すなわち、図９に示すように、対向させて配置された一対のローラ１４Ａ，１４Ｂのうち、一方のローラ１４Ａの外周面に、略Ｕ字状の切込み線を形成するとともに前記切込み線に基づいて形成された舌片部９を前記切込み線の両端部を最短距離で結ぶ仮想線部分をもって当該金属薄板２の前記ローラ１４Ａの外側へ折曲させうるフィン付き孔用刃材１１Ａ、および、細いライン状の貫通孔を穿孔しうるフィン無し孔用刃材１１Ｂを、同一の列Ｌ上の前記孔６，７の配列および前記幅Ｒの配列に従って配設するとともに、当該外周面に、他方のローラ１４Ｂの外周面に形成された各突起状刃材１１Ａ，１１Ｂおよびフィン付き孔用刃材１１Ａにより折曲された前記舌片部９を一時的に収容可能とする複数の溝部１２を形成する。
【００３０】
また、他方のローラ１４Ｂの外周面にも、前記両突起状刃材１１Ａ，１１Ｂを形成するとともに、当該外周面に、前記一方のローラ１１Ａの外周面に形成された両突起状刃材１１Ａ，１１Ｂおよびフィン付き孔用刃材１１Ａにより折曲された前記舌片部９を一時的に収容可能とする複数の溝部１２を形成する。
【００３１】
なお、いずれか一方のローラ１４Ａ，１４Ｂには、前記フィン無し孔用刃材１１Ｂは配設を省略することも可能である。
【００３２】
そして、この一対のローラ１４Ａ，１４Ｂ間に長尺な平帯状の金属薄板２を連続的に供給し、前記両ローラ１４Ａ，１４Ｂを回転駆動させる。そして、前記フィン無し孔用刃材１１Ｂを用いて前記金属薄板２にフィン無し孔４を穿孔するとともに、前記フィン付き孔用刃材１１Ａによって金属薄板２に略Ｕ字状の切り込み線を形成して、前記切込み線に基づいて形成された前記舌片部９を金属薄板２の当該突起状刃材１１が形成されたローラの配設側の外側へ折曲してフィン８を形成するとともに、前記切込み線に囲繞された部分を開口させて孔を形成する。
【００３３】
この製造方法により、後に記述したフィン付き多孔金属板１に示した、フィン付き孔３のフィン８を金属薄板２の両面に突出させたフィン付き多孔金属板１を簡単かつ効率的に形成することができる。
【００３４】
以上のようにして作られたフィン付き多孔金属板１を用いて、次に示すように有空体を作る。
【００３５】
この有空体５は、図１０に示すように、前記フィン付き多孔金属板１の本体部分を壁として渦巻き状に形成され、内燃機関の排ガスの排出方向の上流側および下流側を開口させた排ガス流通経路１７を有している。前記排ガス流通経路１７内には、フィン付き多孔金属板１に形成された複数のフィン付き孔３のフィン８が、前記渦巻き状の排ガス流通経路１７を分断するように突出し、位置している。
【００３６】
また、排ガス浄化装置用部品の第２の実施形態は、図１１に示すように、後記のフィン付き多孔金属板１に示した、フィン付き孔３のフィン８を金属薄板２の両面側に突出させたフィン付き多孔金属板１のみを渦巻き状に巻回して形成した有空体５を用いたものである。
【００３７】
この有空体５は、前記フィン付き多孔金属板１の本体部分を壁として渦巻き状に形成され、内燃機関の排ガスの排出方向の上流側および下流側を開口させた排ガス流通経路１７を有している。前記排ガス流通経路１７は、第１の実施形態と同じく、その流通経路を渦巻き状に巻回された金属薄板２の本体部分からなる壁によって挟まれており、この経路内には、フィン付き多孔金属板１に形成された複数のフィン付き孔３のフィン８が、当該排ガス流通経路１７を構成する両壁側から、前記渦巻き状の排ガス流通経路１７を分断するように突出し、位置している。
【００３８】
このようにして作成した有空体５は、このままでは、使用時筍状となり好ましくない。これを防止する方法として、図１２に示すように、渦巻き状に巻回して形成された網目状断面を有する有空体５を、底部２１あるいは隔壁が貫通孔１８を有する円筒状筒体１６内に嵌合し、該有空体５と円筒状筒体１６とを溶接等で接合する。接合は、複数の貫通孔１８を有する円筒状筒体１６と、そこに接する有空体５とを接合するのが望ましい。接合方法は、公知の方法で良く、例えば抵抗溶接、レーザー溶接等を用いることができる。円筒状筒体１６は、深絞り加工法、絞りしごき加工法、薄肉化深絞り加工法あるいは接合による加工法などによって、成形されたものであることが望ましい。また、前記貫通孔１８の形は、円状、楕円形、正方形、長方形、菱形あるいは多角形など公知の形状が適用できる。
【００３９】
また、図１３に示すように、有空体５を固定する別の方法として、フィン付き多孔金属板１を渦巻き状に巻回して形成された網目状断面を有する有空体５に、線状のものを該フィン付き多孔金属板１の最外周面から該網目状断面の中心を通過して貫通しており、天部２０及び底部２１のない円筒状筒体１６内に該有空体５を収納し、該円筒状筒体１６の側面と該貫通棒１９を接合する方法がある。線状のものを貫通することにより、該有空体５が筍状とならない。
【００４０】
このように構成された排ガス浄化装置用部品１５においては、内燃機関の排ガスの排出方向上流側から当該排ガス浄化装置用部品１５内に流入した排ガスは、その流通経路を渦巻き状に巻回されたフィン付き多孔金属板１の本体部分からなる壁と前記排ガス流通経路１７内に位置するフィン８とによって通過経路を多様に分岐されつつ通過し、また、一部の排ガスは、前記フィン付き多孔金属板１に形成されたフィン無し孔４あるいはフィン付き孔３の開口部から、フィン付き多孔金属板１を隔てて隣接する排ガス流通経路１７内にその通過経路を変更しつつ、当該有空体５内を通過して、排ガスの排出方向下流側へ抜けることとなる。また、排ガスの圧力等によっても、有空体５は筍状とならないため、その機能を長期維持できる。
【００４１】
そして、内燃機関の排ガスは、当該排ガス浄化装置用部品１５内の通過時に、例えば不完全燃焼による「すす」等を担持させたり、濾し取ったりすることができることはいうまでもない。
【００４２】
続いて、本発明の排ガス浄化装置用部品１５の製造方法について説明する。
【００４３】
まず、前記フィン付き多孔金属板１は、円筒状筒体１６内に嵌入する前に、円筒状筒体１６の内径寸法よりも小径な渦巻き状に、多少きつめに巻回して、有空体５を作る。そして、図１３に示すように、貫通棒１９を有空体の最外周面から挿入して、有空体の中心部を通って、反対の最外周面から出てくるようにして、前記円筒状筒体１６内に有空体５をしっかりと位置させ、固定する。
【００４４】
また、前記有空体５を収納する別の方法として、図１２に示すように、円筒状筒体１６は、天部２０が開口していて、底部２１あるいは隔壁に貫通孔１８を作る。貫通孔１８の形は、円状、楕円形、正方形、長方形、菱形あるいは多角形など公知の形状が適用できる。この円筒状筒体１６内に、有空体５を嵌合し、あるいはさらに円筒状筒体１６の底部２１とそれに接する有空体５とを接合する。接合する方法は、抵抗溶接など公知の方法が適用できる。嵌合前の有空体５を作る場合、前記フィン付き多孔金属板１の巻回の程度は、円筒状筒体１６内で解放され、自由状態となったときに、前記フィン８の先端部が、その弾性力により対向する金属薄板２の裏面に当接するような巻回とする。
【００４５】
そして、このように１枚のフィン付き多孔金属板１のみを巻回して有空体５を構成する場合、異なる２枚の金属板を重ねたものを渦巻き状に巻回する場合と比較して、従来の問題点の１つであった巻回時の巻きズレ問題は、より解消することができるものとなった。すなわち、表裏のフィンにより、有空体５が筍状になるのを防ぐことができる。また、円筒状筒体１６に、有空体５を固定するため、使用時でも、筍状になるのを防ぐことができる。
【００４６】
さらに、前述のうち後記のフィン付き多孔金属板１に示した、フィン付き孔３のフィン８を金属薄板２の両面側に突出させたフィン付き多孔金属板１を用いて有空体５を形成する場合、巻回した状態において隣位するフィン付き多孔金属板１からそれぞれ同一の排ガス流通経路１７内に突出するフィン８のうち、いくつかがその先端部をつきあわせて咬み合うことで、従来の問題点の１つであった巻回時の巻きズレ問題は完全に防止することができるものとなった。
【００４７】
なお、前記有空体５は、前記フィン付き多孔金属板１の巻回方向における両側辺に、適当間隔で、巻回した状態において隣位するフィン付き多孔金属板１間を一定に保つための接合用突起を形成しておき、巻回された前記フィン付き多孔金属板１の外周に位置する端辺を１周回内側に位置する金属薄板２に予め接合させる際に、この接合用突起部を以て、渦巻きの中間部分においても接合させることも可能である。さらにまた、接合方法によって、例えば蝋付けのような場合には、前記フィン８の先端部を直接、対向するフィン付き多孔金属板１に接合させることも可能である。
【００４８】
このような排ガス浄化装置用部品１５は、従来品が平箔と波箔との２枚の金属箔を用い、これらを重ねて渦巻き状とした構成であったのに比較して、用いる金属板も１枚の多孔金属薄板２のみでよいので、材料コストも削減することができ、安価なものとなる。また、本実施形態の有空体５に用いられるフィン付き多孔金属板１は平帯状の薄板であるので巻回もしやすく、その製造工程における製造コストも削減することができるという利点を有するものとなる。
【００４９】
なお、前記の内、後で述べたフィン付き多孔金属板１は、長尺な平帯状の金属薄板２とを重ね合わせて渦巻き状に巻回して有空体５を形成することも可能である。その場合、この有空体５を通過する排気は、長尺な平帯状の金属薄板２により挟まれた構内において、フィン付き多孔金属板１の本体部分からなる壁と前記排ガス流通経路１７内に位置するフィン８とによって通過経路を多様に分岐されつつ通過し、また、一部の排ガスは、前記フィン付き多孔金属板１に形成されたフィン無し孔４あるいはフィン付き孔３の開口部から、このフィン付き多孔金属板１を隔てて隣接する排ガス流通経路１７内にその通過経路を変更しつつ、当該有空体５の網目内を通過して、排ガスの排出方向下流側へ抜けることとなる。
【００５０】
なお、本発明は、前述した実施の形態に限定されるものではなく、必要に応じて種々の変更が可能である。基本的には蝋付けはしなくてもよいが、端面の一部に必要に応じて行っても差し支えない。また、触媒は公知のものを使用することができ、例えば活性アルミナからなる担持層に、白金、パラジウムなどの触媒を担持させたものを使用することができる。
【００５１】
【発明の効果】
以上説明したように、本発明の多孔性基板を用いた網目状断面を有する有空体を有する排ガス浄化装置用部品は、フィン付き多孔金属板の本体部分で排ガスの流通経路を形成し、フィンを備えた孔の前記フィンを排ガスの流通経路内に突出させて配置させることで、前記孔を通過する経路をも含めて、前記排ガス流通経路内の通過経路を多岐に亘らせることができ、当該網目状断面を有する有空体と排ガスとの接触面積を大きくして、排ガスの浄化を行なうことができる。そして、このような構成の排ガス浄化装置用部品は、基本的には、前記フィン付き多孔金属板１枚で、網目状断面を有する有空体を形成することができるので、従来品と比較して安価なものとなる。
【００５２】
そして、本発明の排ガス浄化装置用部品の製造方法によれば、排ガス浄化装置用部品に嵌入される網目状断面を有する有空体に用いるフィン付き多孔金属板は平帯状の１枚の金属薄板であるので巻回もしやすく、その製造工程における製造コストも削減することができ、また、従来の巻きズレ問題も解消することができる。
【００５３】
このように、本発明は、網目状断面を有する有空体を用いた排ガス浄化装置用部品並びにその製造方法を、経済的で容易なものとして提供することができるという効果を奏する。
【図面の簡単な説明】
【図１】本発明のフィン付き多孔金属板１の第１実施形態の要部を示す斜視拡大図
【図２】図１のフィン付き多孔金属板１の要部を示す断面拡大図
【図３】図１のフィン付き多孔金属板１の構成を示す要部平面図
【図４】フィン付き孔におけるフィンの連接辺を示す拡大説明図
【図５】本発明のフィン付き多孔金属板の第２実施形態の要部を示す断面拡大図
【図６】フィン付き孔およびフィン無し孔の拡大斜視図
【図７】本発明のフィン付き多孔金属板の製造方法に用いる穿孔ローラの突起状刃材、受けローラの溝部およびフィン付き多孔金属板の位置関係を示す拡大説明図
【図８】図１のフィン付き多孔金属板の製造方法に用いる穿孔ローラおよび受けローラの要部概念図
【図９】図５のフィン付き多孔金属板の製造方法に用いる穿孔ローラおよび受けローラの要部概念図
【図１０】図１のフィン付き多孔金属板を用いた網目状断面を有する有空体の一断面における構成を示す拡大図
【図１１】図５のフィン付き多孔金属板を用いた網目状断面を有する有空体の一断面における構成を示す拡大図
【図１２】フィン付き多孔金属板を用いた網目状断面を有する有空体を収納する円筒状筒体の一実施例
【図１３】フィン付き多孔金属板を用いた網目状断面を有する有空体を収納した円筒状筒体の他の一実施例における断面図
【符号の説明】
１フィン付き多孔金属板
２金属薄板
３フィン付き孔
３Ａフィンの連接辺を孔の上流側の一辺とするフィン付き孔
３Ｂフィンの連接辺を孔の下流側の一辺とするフィン付き孔
３Ｃフィンを金属薄板の一方の面に突出させたフィン付き孔
３Ｄフィンを金属薄板の他方の面に突出させたフィン付き孔
４フィン無し孔
５（網目状断面を有する）有空体
６（フィン無し孔の）孔部
７（フィン付き孔の）孔部
８フィン
９舌片部
１０穿孔ローラ
１１突起状刃材
１１Ａフィン付き孔用刃材
１１Ｂフィン無し孔用刃材
１２溝部
１３受けローラ
１４Ａ、１４Ｂローラ
１５排ガス浄化装置用部品
１６円筒状筒体
１７排ガス流通経路
１８貫通孔
１９貫通棒
２０天部
２１底部
Ｌ列
Ｒ幅[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a finned porous metal plate and a method for producing the finned porous metal plate which are most suitable for use in a device for purifying exhaust gas discharged from an internal combustion engine such as an automobile engine, and a carrier and a filter using the finned porous metal plate. The present invention relates to a component for an exhaust gas purification device and a method for producing the component for an exhaust gas purification device.
[0002]
[Prior art]
An exhaust gas purifying device for an internal combustion engine such as an automobile engine or a generator includes a metal carrier in which a cylindrical honeycomb body made of the same metal steel is fitted into a cylindrical casing made of a metal steel such as a heat-resistant stainless steel plate. Is used.
[0003]
A conventional metal carrier having such a configuration is generally manufactured by winding a flat thin plate made of a strip-shaped metal thin plate and a corrugated thin plate corrugated on the flat thin plate in a spiral shape. The honeycomb body is fitted into a cylindrical metal casing, and thereafter, the contact portion between the flat sheet and the corrugated sheet of the hollow body having the mesh cross section, and the honeycomb body and the casing are brazed, welded, diffusion-bonded, and the like. It is manufactured by joining according to the method described above. Further, various types of catalysts are coated to provide an exhaust gas purifying apparatus having a purifying function.
[0004]
[Problems to be solved by the invention]
However, in the method of manufacturing a metal carrier having such a configuration, the work of spirally winding a flat thin plate and a corrugated thin plate in a state where the flat thin plate and the corrugated thin plate are stacked is different in bending elasticity between the two thin plates, and the flat thin plate and the corrugated thin plate Due to the relationship of the friction coefficient in the contact portion and the like, stable work could not be performed, and it was extremely difficult to manufacture.
[0005]
For example, when the winding force of the flat thin plate and the corrugated thin plate acts differently at both ends in the axial direction of the honeycomb body manufactured as an intermediate component, the spirally wound honeycomb body does not have an appropriate cylindrical shape. In addition, one end in the axial direction of the honeycomb body protrudes in the form of a bamboo shoot at the center of its winding, and the other end has a mortar-shaped concave shape (bamboo shoot-like shape). Problem).
[0006]
Therefore, an object of the present invention is to provide a component for an exhaust gas purifying device composed of an air body having a mesh-shaped cross section and a method for manufacturing the same as an inexpensive and easy component.
[0007]
[Means for Solving the Problems]
In order to achieve the above-described object, a component for an exhaust gas purifying apparatus of the present invention includes a finned porous metal plate having a plurality of holes formed by bending fins from a long flat band-shaped metal sheet to one side. A hollow body having a mesh-shaped cross section formed by spirally winding a cylindrical body having a through hole in the bottom or the partition wall, or further joined with the hollow body and the cylindrical body Alternatively, the hole is formed by bending a fin from the thin metal plate to any surface side. Preferably, the through-hole is circular, elliptical, square, rectangular, rhomboid or polygonal.
[0008]
Also, the exhaust gas purification device component of the present invention is a spirally wound finned porous metal plate having a plurality of holes formed by bending a fin from a long flat band-shaped metal thin plate to one side. A hollow body having a mesh-shaped cross section formed by passing a penetrating rod through the center of the mesh-shaped cross section from the outermost peripheral surface of the finned perforated metal plate, and having no top and bottom portions The hollow body is fitted into the hollow body, and the side surface of the cylindrical body and the through rod are joined to each other. It is characterized by being formed to bend to the side. In this case, the finned perforated metal plate is formed by forming a plurality of substantially U-shaped cut lines on a long flat band-shaped thin metal plate, and attaching the tongue piece formed based on each of the cut lines to the metal thin plate. Forming a fin protruding in the bending direction by selectively bending each of the fins to any one of the surfaces, and forming a hole provided with the fin by opening a portion surrounded by the cut line. Is desirable.
[0009]
A method for manufacturing a component for an exhaust gas purifying apparatus according to the present invention is directed to an exhaust gas purifying apparatus having a hollow cylindrical body accommodating a hollow body having a mesh-shaped cross section formed by spirally winding a finned porous metal plate. A method of manufacturing a component for an apparatus, comprising: forming a cylindrical tubular body for accommodating a finned porous metal plate having a plurality of holes formed by bending a fin from a long flat band-shaped metal thin plate to one side. It is wound in a spiral shape having a diameter smaller than the inner diameter, and then fitted into a cylindrical cylinder having a through hole at the bottom or the partition wall, and the inner surface of the cylindrical cylinder and the hollow body are joined. Alternatively, the hole is formed by bending a fin from the thin metal plate to any surface side. In this case, the finned perforated metal plate is formed by forming a plurality of substantially U-shaped cut lines on a long flat band-shaped thin metal plate, and attaching the tongue piece formed based on each of the cut lines to the metal thin plate. Forming a fin protruding in the bending direction by selectively bending each of the fins to any one of the surfaces, and forming a hole provided with the fin by opening a portion surrounded by the cut line. Is desirable.
[0010]
In addition, the method for manufacturing a component for an exhaust gas purifying device of the present invention includes a hollow cylindrical body for accommodating a hollow body having a mesh-shaped cross section formed by spirally winding a finned porous metal plate. A method for manufacturing a component for an exhaust gas purifying apparatus, wherein a finned porous metal plate having a plurality of holes formed by bending fins from a long flat metal thin plate to one side is spirally wound. By joining at least a part of the finned porous metal plate and / or a part of the hollow body having the mesh cross section, a hollow body having a cylindrical mesh cross section is formed. Alternatively, it is characterized by being fitted to a cylindrical cylinder having a through hole in a partition wall, and joining an inner surface of the cylindrical cylinder and an aired body. Bent to the side of the face And wherein the Rukoto.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
First, an embodiment of a component for an exhaust gas purification device of the present invention will be described with reference to FIGS.
[0012]
The exhaust gas purifying device component 15 of the present invention is a device mainly for purifying exhaust gas discharged from an internal combustion engine such as an automobile engine, and is used as a carrier or a filter. The basic configuration is such that a cylindrical hollow body 5 is fitted into a cylindrical cylindrical body 16 made of a metal plate as described in the conventional example.
[0013]
The exhaust gas purifying device component 15 of the present invention includes the hollow body 5 formed by using the finned porous metal plate 1 (see FIG. 1) manufactured by the above-described manufacturing method in a cylindrical tubular body 16. Configuration.
[0014]
Next, two embodiments will be described.
[0015]
In the first embodiment, as shown in FIGS. 10 and 1, only the finned perforated metal plate 1 in which the fins 8 of the finned holes 3 of the finned perforated metal plate 1 project to the same surface side of the thin metal plate 2. Is formed in a spiral shape, and a cylindrical hollow body 5 is used.
[0016]
The finned perforated metal plate 1 has a hole 3 (hereinafter, referred to as “a metal plate 2 (including a metal foil, the same applies hereinafter)) provided with a fin 8 protruding to one side thereof. Finned hole ") is formed. The presence of the fins 3 makes it possible to freely adjust the interval depending on the fin length. As a metal used for the metal sheet 2, a general stainless steel expressed by an iron-nickel-chromium alloy, an iron-nickel alloy, an iron-chromium-aluminum alloy, or an iron-chromium alloy can be applied. Here, the formation means, for example, that when only the finned holes 3 are arranged and formed with regularity, they are aligned and formed with some regularity in relation to the holes 4 having no fins (hereinafter, “finless holes”). In addition to the case where it is formed, the case where it is formed at random so as not to have regularity is included.
[0017]
As described above, since a large number of holes such as the finned hole 3 and the finless hole 4 are provided, when the exhaust gas purifying apparatus is used, the warm-up operation is short.
[0018]
The finned perforated metal plate 1 shown in FIGS. 1 to 3 is wound later into a spiral shape and fitted into a component for an exhaust gas purifying device described later. The finless holes 4 are arranged alternately in the winding direction of the hollow bodies 5 having a mesh-like cross section (hereinafter, referred to as hollow bodies 5; see FIG. 10) to form a row L. As shown in FIG. 3, the row L is formed by adjusting a plurality of finned holes 3 or finless holes 4 formed in the adjacent row L so that they are not adjacent to each other. And the width R is configured. A plurality of the widths R are formed on the flat strip-shaped metal sheet 2 at predetermined intervals.
[0019]
Here, the finless hole 4 is a thin line-shaped hole 6 formed so as to be orthogonal to the alignment direction of the holes. The shape of the hole 7 of the finned hole 3 is substantially rectangular, and the substantially rectangular hole 7 has a fin 8 protruding on the same surface side of the thin metal plate 2. The fin 8 is a flat small piece, and is formed so that its surface is directed in the winding direction. In the present embodiment, among the four sides forming the hole 7, In the winding direction on the upstream side.
[0020]
The connecting side of the fin 8 is not limited to the upstream side in the winding direction of the hole 7 but may be one side on the downstream side. Also, for example, as shown in FIG. 4, a hole 6 provided with a fin 8 connected to one side on the upstream side in the winding direction and a hole 7 provided with a fin 8 connected on one side on the downstream side in the winding direction. May be regularly arranged on the same column L. Furthermore, the arrangement of the various holes in each row L may be different.
[0021]
The finned perforated metal plate 1 other than those described above is one in which the finned holes 3 protruding to any surface of the long flat band-shaped thin metal plate 2 are formed.
[0022]
As described above, also in this case, the arrangement of the finned holes 3 and the finless holes 4, and further, in the finned holes 3, the finned holes 3 </ b> A having the connecting side of the fins 8 as one side on the upstream side of the hole 7. And the arrangement of the finned holes 3B as one side on the downstream side, and the arrangement of the finned holes 3C having the fins 8 protruding on one surface of the metal sheet 2 and the finned holes 3D having the other surface protruding. It may have regularity or may be random.
[0023]
In FIG. 5, as the finned porous metal plate 1, the finned holes 3 and the finless holes 4 are alternately arranged in the winding direction of the hollow body 5, and the finned holes 3 are formed. Is a finned hole 3C in which the connecting side of the fin 8 is one side on the upstream side of the hole 7 and the fin 8 is projected on one surface of the metal sheet 2 and a finned hole 3D which is projected on the other surface. Indicates the finned perforated metal plate 1 in which are alternately arranged.
[0024]
Next, a method for manufacturing the finned porous metal plate 1 will be described.
[0025]
Basically, as shown in FIG. 6, the finless holes 4 formed in the two finned porous metal plates 1 described above are formed on a long flat band-shaped thin metal plate 2 by a thin line. Hole 6 is drilled. In addition, the finned hole 3 forms a substantially U-shaped cut line, and an imaginary line portion that connects the tongue piece 9 formed based on each cut line to both ends of the cut line at the shortest distance. (Indicated by a dashed line in FIG. 6), the fins 8 are selectively bent toward any one of the surfaces of the metal sheet 2 to form fins 8 protruding in the bending direction, and a portion surrounded by the cut lines. Is formed to form the hole 7 of the finned hole 3.
[0026]
More specifically, as shown in FIGS. 7 and 8, the substantially U-shaped cut line is formed, and the tongue piece 9 formed based on the cut line is connected to both ends of the cut line at the shortest distance. A protruding blade material 11 (hereinafter referred to as a finned hole blade material 11A) that can be bent outward with the imaginary line portion to be connected to the metal sheet 2 opposite to the side where the perforation roller 10 is provided, and a thin line Roller provided with a protruding blade material 11 (hereinafter referred to as a finless hole blade material 11B) capable of perforating a hole 6 in an outer peripheral surface in accordance with the arrangement of the holes on the same row L and the arrangement of the width R. 10, the blade member 11A for the hole with fins formed on the roller 10 and facing the punching roller 10, the tongue piece 9 bent by the protruding blade material 11, and the hole for the finless hole. The blade material 11B can be temporarily stored. Continuously feeding an elongate flat strip of sheet metal 2 between the receiving roller 13 provided with a plurality of grooves 12 on the outer peripheral surface, rotationally driven the both rollers 10 and 13. Then, a finless hole 4 is formed in the metal sheet 2 using the finless hole blade material 11B. Further, a substantially U-shaped cut line is formed in the metal sheet 2 using the finned hole blade material 11A, and the tongue piece 9 formed based on the cut line is perforated in the metal sheet 2. The fin 8 is formed by bending the roller 10 to the outside, and a hole 7 is formed by opening a portion surrounded by the cut line.
[0027]
According to this manufacturing method, the finned perforated metal plate 1 having the fins 8 of the finned holes 3 projected on the same surface side of the thin metal plate 2 as shown in the first described finned perforated metal plate 1 can be simply and efficiently manufactured. Can be formed.
[0028]
Further, the finned perforated metal plate 1 shown in the finned perforated metal plate 1 described later, in which the fins 8 of the finned holes 3 protrude on both sides of the thin metal plate 2, can be manufactured as follows. it can.
[0029]
That is, as shown in FIG. 9, a substantially U-shaped cut line is formed on the outer peripheral surface of one of the pair of rollers 14A and 14B arranged opposite to each other, and based on the cut line. A finned hole blade material 11A that can bend the formed tongue piece 9 to the outside of the roller 14A of the thin metal plate 2 with an imaginary line part connecting both ends of the cut line at the shortest distance, and a thin line A blade material 11B for a finless hole capable of punching a through hole is disposed in accordance with the arrangement of the holes 6 and 7 on the same row L and the arrangement of the width R, and the other roller is provided on the outer peripheral surface. A plurality of grooves 12 are formed to temporarily accommodate the tongue piece 9 bent by the respective protruding blades 11A, 11B and the finned hole blade 11A formed on the outer peripheral surface of the 14B.
[0030]
The two-projection blades 11A and 11B are also formed on the outer peripheral surface of the other roller 14B, and the two-projection blades 11A and 11B formed on the outer peripheral surface of the one roller 11A are formed on the outer peripheral surface. A plurality of grooves 12 are formed to temporarily accommodate the tongue piece 9 bent by 11B and the finned hole blade material 11A.
[0031]
The finless hole blade 11B may be omitted from one of the rollers 14A and 14B.
[0032]
Then, the long flat band-shaped thin metal plate 2 is continuously supplied between the pair of rollers 14A and 14B, and the two rollers 14A and 14B are driven to rotate. Then, a finless hole 4 is formed in the thin metal plate 2 by using the finless hole blade material 11B, and a substantially U-shaped cut line is formed in the metal thin plate 2 by the finned hole blade material 11A. Then, the tongue piece 9 formed based on the cut line is bent outward of the thin metal plate 2 on the side where the roller on which the protruding blade material 11 is formed is formed to form the fin 8, A hole is formed by opening a portion surrounded by the score line.
[0033]
According to this manufacturing method, the finned perforated metal plate 1 shown in the finned perforated metal plate 1 described later, in which the fins 8 of the finned holes 3 protrude from both sides of the thin metal plate 2, can be formed simply and efficiently. Can be.
[0034]
Using the finned perforated metal plate 1 produced as described above, a hollow body is produced as shown below.
[0035]
As shown in FIG. 10, the hollow body 5 is formed in a spiral shape with the main body portion of the finned porous metal plate 1 as a wall, and has an opening on the upstream side and the downstream side in the exhaust gas discharge direction of the internal combustion engine. An exhaust gas distribution path 17 is provided. In the exhaust gas flow passage 17, the fins 8 of the plurality of finned holes 3 formed in the finned porous metal plate 1 project and are located so as to divide the spiral exhaust gas flow passage 17.
[0036]
Further, in the second embodiment of the exhaust gas purifying device component, as shown in FIG. 11, the fins 8 of the finned holes 3 shown in the finned porous metal plate 1 described later project to both sides of the thin metal plate 2. A hollow body 5 formed by spirally winding only the finned perforated metal plate 1 is used.
[0037]
The hollow body 5 is formed in a spiral shape with the main body of the finned porous metal plate 1 as a wall, and has an exhaust gas flow path 17 having openings on the upstream and downstream sides in the exhaust gas discharge direction of the internal combustion engine. ing. As in the first embodiment, the exhaust gas flow path 17 is sandwiched by a wall made of a main body of the thin metal plate 2 wound in a spiral shape. The fins 8 of the plurality of finned holes 3 formed in the metal plate 1 protrude from both walls constituting the exhaust gas flow path 17 so as to divide the spiral exhaust gas flow path 17 and are positioned. .
[0038]
The empty body 5 created in this way is not preferable as it is in a bamboo shoot shape when used. As a method of preventing this, as shown in FIG. 12, a hollow body 5 having a mesh-like cross section formed by spirally winding is placed in a cylindrical tubular body 16 having a bottom portion 21 or a partition wall having a through hole 18. And the hollow body 5 and the cylindrical tubular body 16 are joined by welding or the like. For joining, it is desirable to join the cylindrical body 16 having a plurality of through holes 18 and the hollow body 5 in contact therewith. The joining method may be a known method, for example, resistance welding, laser welding, or the like can be used. It is preferable that the cylindrical tubular body 16 is formed by a deep drawing method, a drawing and ironing method, a thinning deep drawing method, a joining processing method, or the like. The shape of the through hole 18 may be a known shape such as a circle, an ellipse, a square, a rectangle, a rhombus, or a polygon.
[0039]
As shown in FIG. 13, as another method of fixing the hollow body 5, a hollow body 5 having a mesh-like cross section formed by spirally winding the finned porous metal plate 1 is formed by a linear method. From the outermost peripheral surface of the perforated metal plate 1 with fins, passing through the center of the mesh-like cross section, and into the hollow cylindrical body 16 without the top portion 20 and the bottom portion 21, And the side wall of the cylindrical body 16 is joined to the through-rod 19. By penetrating through the linear object, the hollow body 5 does not form a bamboo shoot.
[0040]
In the exhaust gas purifying device component 15 configured as described above, the exhaust gas that has flowed into the exhaust gas purifying device component 15 from the exhaust gas upstream direction of the exhaust gas of the internal combustion engine is spirally wound around the flow path. The finned porous metal plate 1 and the fins 8 located in the exhaust gas flow path 17 pass through the passage path while being branched in various ways by the wall composed of the main body portion. From the opening of the finless hole 4 or the finned hole 3 formed in the plate 1, while changing the passage through the finned porous metal plate 1 into the adjacent exhaust gas flow passage 17 across the finned porous metal plate 1, And passes through the exhaust gas to the downstream side in the exhaust gas discharge direction. In addition, the hollow body 5 does not form a bamboo shoot due to the pressure of the exhaust gas or the like, so that its function can be maintained for a long time.
[0041]
It goes without saying that the exhaust gas of the internal combustion engine can carry, for example, "soot" or the like due to incomplete combustion or be filtered off when passing through the exhaust gas purification device component 15.
[0042]
Next, a method for manufacturing the exhaust gas purification device component 15 of the present invention will be described.
[0043]
First, the finned porous metal plate 1 is wound slightly tightly into a spiral shape having a diameter smaller than the inner diameter of the cylindrical tubular body 16 before being fitted into the cylindrical tubular body 16 so as to form a hollow body. Make 5. Then, as shown in FIG. 13, the penetration rod 19 is inserted from the outermost peripheral surface of the hollow body, passes through the center of the hollow body, and emerges from the opposite outermost peripheral surface. The hollow body 5 is firmly positioned and fixed in the cylindrical body 16.
[0044]
In addition, as another method for storing the empty body 5, as shown in FIG. 12, the cylindrical tubular body 16 has a top portion 20 opened, and a through hole 18 is formed in a bottom portion 21 or a partition wall. As the shape of the through hole 18, a known shape such as a circle, an ellipse, a square, a rectangle, a rhombus, or a polygon can be applied. The hollow body 5 is fitted into the cylindrical body 16, or the bottom 21 of the cylindrical body 16 and the hollow body 5 in contact therewith are joined. As a joining method, a known method such as resistance welding can be applied. When the hollow body 5 before fitting is made, the degree of winding of the finned porous metal plate 1 is released within the cylindrical tubular body 16 and when the free state is established, the tip of the fin 8 However, the winding is made so as to abut against the back surface of the metal sheet 2 facing by the elastic force.
[0045]
When the hollow body 5 is formed by winding only one finned perforated metal plate 1 in this manner, compared with a case where a stack of two different metal plates is spirally wound. In addition, the problem of winding misalignment at the time of winding, which was one of the conventional problems, can be further solved. That is, the front and back fins can prevent the hollow body 5 from forming a bamboo shoot. In addition, since the hollow body 5 is fixed to the cylindrical tubular body 16, it can be prevented from becoming bamboo-like even during use.
[0046]
Further, the hollow body 5 is formed by using the finned porous metal plate 1 in which the fins 8 of the finned holes 3 are projected on both sides of the thin metal plate 2 as shown in the finned porous metal plate 1 described later. In this case, some of the fins 8 protruding into the same exhaust gas flow path 17 from the adjacent finned porous metal plate 1 in the wound state in the wound state, and some of the fins 8 are brought into contact with each other with their tips being engaged with each other. The problem of winding misalignment during winding, which was one of the problems described above, can be completely prevented.
[0047]
The hollow body 5 is provided on both sides in the winding direction of the finned porous metal plate 1 at appropriate intervals to maintain a constant distance between the adjacent finned porous metal plates 1 in the wound state. A joining projection is formed, and when the edge located at the outer periphery of the wound finned perforated metal plate 1 is joined in advance to the metal sheet 2 located at the inner side of one turn, the joining projection is used. It is also possible to join at the middle part of the spiral. Furthermore, depending on the joining method, for example, in the case of brazing, it is possible to directly join the tip of the fin 8 to the opposed finned porous metal plate 1.
[0048]
Such a component 15 for an exhaust gas purifying apparatus uses a metal plate in comparison with a conventional product in which two metal foils of a flat foil and a corrugated foil are used, and these are stacked to form a spiral. Since only one porous metal sheet 2 is required, the material cost can be reduced and the cost is low. Further, the finned porous metal plate 1 used for the hollow body 5 of the present embodiment is a flat band-shaped thin plate, so that it can be easily wound, and has an advantage that the manufacturing cost in the manufacturing process can be reduced. Become.
[0049]
In addition, among the above, the finned perforated metal plate 1 described later can be formed into a hollow body 5 by superposing a long flat metal thin plate 2 and spirally winding it. . In this case, the exhaust gas passing through the hollow body 5 is transferred to the wall composed of the main body portion of the finned porous metal plate 1 and the exhaust gas flow path 17 in a yard sandwiched by the long flat metal thin plates 2. The exhaust gas passes through the passage route while being branched in various ways by the located fins 8, and a part of the exhaust gas passes through the openings of the finless holes 4 or the finned holes 3 formed in the finned porous metal plate 1. While passing through the exhaust gas flow path 17 adjacent to the fin-attached porous metal plate 1 and changing the path of the fin-attached porous metal plate 1, the metal sheet 1 passes through the mesh of the air-filled body 5 and escapes downstream in the exhaust gas discharge direction. .
[0050]
Note that the present invention is not limited to the above-described embodiment, and various changes can be made as necessary. Basically, it is not necessary to perform brazing, but it is possible to perform brazing on a part of the end face as needed. A known catalyst can be used. For example, a catalyst in which a catalyst such as platinum or palladium is supported on a support layer made of activated alumina can be used.
[0051]
【The invention's effect】
As described above, the exhaust gas purification device component having an air body having a mesh-shaped cross section using the porous substrate of the present invention forms a flow path of exhaust gas in the main body portion of the finned porous metal plate, By disposing the fins of the holes provided with the protruding portions in the exhaust gas flow path, it is possible to diversify the passage paths in the exhaust gas flow path, including the paths passing through the holes. The exhaust gas can be purified by increasing the contact area between the air having the mesh-shaped cross section and the exhaust gas. In addition, the exhaust gas purifying device component having such a configuration can basically form a hollow body having a mesh-shaped cross-section by using the single finned perforated metal plate. And inexpensive.
[0052]
According to the method for manufacturing an exhaust gas purification device component of the present invention, the finned perforated metal plate used for the hollow body having a mesh-shaped cross section to be fitted into the exhaust gas purification device component is a flat metal sheet. Therefore, winding is easy, the manufacturing cost in the manufacturing process can be reduced, and the conventional problem of winding misalignment can be solved.
[0053]
As described above, the present invention has an effect that it is possible to provide an exhaust gas purification device component using a hollow body having a mesh-shaped cross section and a method for manufacturing the same, as being economical and easy.
[Brief description of the drawings]
FIG. 1 is an enlarged perspective view showing a main part of a finned perforated metal plate 1 according to a first embodiment of the present invention.
FIG. 2 is an enlarged sectional view showing a main part of the finned perforated metal plate 1 of FIG.
FIG. 3 is a main part plan view showing the configuration of the finned perforated metal plate 1 of FIG. 1;
FIG. 4 is an enlarged explanatory view showing a connecting edge of a fin in a finned hole;
FIG. 5 is an enlarged cross-sectional view showing a main part of a second embodiment of a finned perforated metal plate of the present invention.
FIG. 6 is an enlarged perspective view of a finned hole and a finless hole.
FIG. 7 is an enlarged explanatory view showing a positional relationship among a protruding blade material of a punching roller, a groove portion of a receiving roller, and a finned porous metal plate used in the method for manufacturing a finned porous metal plate of the present invention.
FIG. 8 is a conceptual diagram of a main part of a punching roller and a receiving roller used in the method for manufacturing the finned perforated metal plate of FIG.
9 is a conceptual diagram of a main part of a punching roller and a receiving roller used in the method for manufacturing the finned perforated metal plate of FIG.
FIG. 10 is an enlarged view showing a configuration in one section of a hollow body having a mesh-like section using the finned perforated metal plate of FIG. 1;
FIG. 11 is an enlarged view showing a configuration in one section of a hollow body having a mesh-shaped section using the finned perforated metal plate of FIG. 5;
FIG. 12 is an embodiment of a cylindrical tubular body containing a hollow body having a mesh-shaped cross section using a finned perforated metal plate;
FIG. 13 is a cross-sectional view of another embodiment of a cylindrical tubular body containing a hollow body having a mesh-shaped cross section using a finned porous metal plate.
[Explanation of symbols]
1 Finned perforated metal plate
2 Metal sheet
3 Finned hole
3A Finned hole with the connecting side of the fin as one side on the upstream side of the hole
3B Finned hole with the connecting side of the fin as one side on the downstream side of the hole
Finned hole with 3C fin protruding from one side of a thin metal plate
Finned holes with 3D fins protruding from the other side of the sheet metal
4 Finless hole
5 Empty body (having mesh cross section)
6 Holes (of finless holes)
7 Holes (of finned holes)
8 fins
9 Tongue piece
10 Perforation roller
11 Projecting blade material
11A Blade material for holes with fins
11B Blade material for finless hole
12 groove
13 Receiving roller
14A, 14B roller
15 Parts for exhaust gas purification equipment
16 Cylindrical cylindrical body
17 Exhaust gas distribution route
18 Through hole
19 Penetrating rod
20 Tenbu
21 bottom
L column
R width

Claims

A hollow body having a mesh-shaped cross section formed by spirally winding a finned porous metal plate having a plurality of holes formed by bending fins from a long flat band-shaped thin metal plate to one side. Is fitted or further joined to a cylindrical tubular body having a through-hole at the bottom or the partition wall.

It has a mesh-shaped cross-section formed by spirally winding a finned perforated metal plate in which a plurality of holes are formed by bending fins from a long flat band-shaped thin metal plate to either side. A component for an exhaust gas purifying device, characterized in that the hollow body is fitted or further joined to a cylindrical tubular body having a through hole at the bottom or a partition wall.

The exhaust gas purifying device component according to claim 1, wherein the through hole has a circular shape, an elliptical shape, a square shape, a rectangular shape, a diamond shape, or a polygonal shape.

A hollow body having a mesh-shaped cross section formed by spirally winding a finned porous metal plate having a plurality of holes formed by bending fins from a long flat band-shaped thin metal plate to one side. A penetrating rod penetrates through the center of the mesh-shaped cross section from the outermost peripheral surface of the finned porous metal plate, and fits the hollow body into a cylindrical cylinder having no top and bottom. A part for an exhaust gas purifying apparatus, wherein a side surface of the cylindrical tubular body and the penetrating rod are joined.

It has a mesh-shaped cross-section formed by spirally winding a finned perforated metal plate in which a plurality of holes are formed by bending fins from a long flat band-shaped thin metal plate to either side. A through rod is passed through the hollow body from the outermost peripheral surface of the finned perforated metal plate through the center of the mesh-like cross section, and the hollow body is fitted to a cylindrical cylinder having no top and bottom. A part for an exhaust gas purifying device, wherein a side surface of the cylindrical tubular body and the penetrating rod are joined.

The finned porous metal plate has a plurality of substantially U-shaped cut lines formed on a long flat band-shaped thin metal plate, and a tongue piece formed based on each of the cut lines is formed by any one of the thin metal plates. Forming a fin protruding in the bending direction by selectively bending each side to the surface side, and opening a portion surrounded by the cut line to form a hole having the fin. The exhaust gas purifying device component according to claim 2 or 5, wherein

A method for manufacturing a component for an exhaust gas purifying apparatus, comprising a cylindrical body containing a hollow body having a mesh-like cross section formed by spirally winding a finned porous metal plate, the method comprising: By winding the fins from the flat band-shaped thin metal plate to one surface side, the fins are wound into a spiral shape having a diameter smaller than the inner diameter of the cylindrical tubular body that houses the finned porous metal plate formed with a plurality of holes, and then A method for manufacturing a component for an exhaust gas purifying apparatus, comprising: fitting a cylindrical body having a through hole at a bottom or a partition wall; and joining an inner surface of the cylindrical body and an aired body.

A method for manufacturing a component for an exhaust gas purifying apparatus, comprising a cylindrical body containing a hollow body having a mesh-like cross section formed by spirally winding a finned porous metal plate, the method comprising: A fin is bent from a flat band-shaped thin metal plate to any surface side to form a spiral having a diameter smaller than the inner diameter of a cylindrical tube housing a finned porous metal plate having a plurality of holes formed therein. Turning, and then fitting into a cylindrical tubular body having a through hole at the bottom or the partition wall, and joining the inner surface of the cylindrical tubular body and the hollow body to manufacture a component for an exhaust gas purifying apparatus, Method.

The finned porous metal plate has a plurality of substantially U-shaped cut lines formed on a long flat band-shaped thin metal plate, and a tongue piece formed based on each of the cut lines is formed by any one of the thin metal plates. Forming a fin protruding in the bending direction by selectively bending each side to the surface side, and opening a portion surrounded by the cut line to form a hole having the fin. A method for producing a component for an exhaust gas purifying apparatus according to claim 8.

A method for manufacturing a component for an exhaust gas purifying apparatus, comprising a cylindrical body containing a hollow body having a mesh-shaped cross section formed by spirally winding a finned porous metal plate, the method comprising: A finned porous metal plate having a plurality of holes formed by bending a fin from a flat metal thin plate to one surface side is spirally wound, and at least a part of the finned porous metal plate and / or Forming a hollow body having a cylindrical mesh cross section by joining a part of the hollow body having a mesh cross section, and then fitting into a cylindrical tubular body having a through hole in the bottom or the partition wall, A method for manufacturing a component for an exhaust gas purifying apparatus, comprising joining an inner surface of the cylindrical body and an air body.

A method for manufacturing a component for an exhaust gas purifying apparatus, comprising a cylindrical body containing a hollow body having a mesh-shaped cross section formed by spirally winding a finned porous metal plate, the method comprising: A finned porous metal plate having a plurality of holes formed by bending a fin from the flat band-shaped metal thin plate to any surface side is spirally wound, and at least a part of the finned porous metal plate and And / or joining a part of the hollow body having the mesh cross section to form a hollow body having a columnar mesh cross section, and then fitting the hollow body having a through hole in the bottom or the partition wall. A method for manufacturing a component for an exhaust gas purifying device, comprising joining an inner surface of the cylindrical body and a hollow body.