JPH09317456A - Catalyst device for honeycomb body - Google Patents
Catalyst device for honeycomb bodyInfo
- Publication number
- JPH09317456A JPH09317456A JP8133677A JP13367796A JPH09317456A JP H09317456 A JPH09317456 A JP H09317456A JP 8133677 A JP8133677 A JP 8133677A JP 13367796 A JP13367796 A JP 13367796A JP H09317456 A JPH09317456 A JP H09317456A
- Authority
- JP
- Japan
- Prior art keywords
- honeycomb body
- cylinder
- catalyst device
- outer cylinder
- slit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003054 catalyst Substances 0.000 title claims abstract description 113
- 239000011888 foil Substances 0.000 claims abstract description 38
- 229910052751 metal Inorganic materials 0.000 claims description 107
- 239000002184 metal Substances 0.000 claims description 107
- 239000000463 material Substances 0.000 claims description 22
- 238000005452 bending Methods 0.000 claims description 9
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 239000012779 reinforcing material Substances 0.000 claims description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 238000005485 electric heating Methods 0.000 abstract description 11
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 25
- 239000000919 ceramic Substances 0.000 description 22
- 230000004308 accommodation Effects 0.000 description 7
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 230000008602 contraction Effects 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 6
- 238000011144 upstream manufacturing Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000005219 brazing Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000010411 electrocatalyst Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はハニカム体を用いた
触媒装置に関し、特に、金属製のハニカム体を触媒担体
とし、これを金属外筒内に中間筒を介して収容してなる
ハニカム体を用いた触媒装置の構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a catalyst device using a honeycomb body, and more particularly to a honeycomb body in which a metal honeycomb body is used as a catalyst carrier and is housed in a metal outer cylinder via an intermediate cylinder. The structure of the catalyst device used.
【０００２】[0002]
【従来の技術】車両に搭載された内燃機関から排出され
る排気ガス中にはＨＣ（炭化水素）、ＣＯ（一酸化炭
素）やＮＯx(窒素酸化物) 等の有害物質が含まれている
ので、内燃機関の排気通路には一般に排気ガスを浄化す
る排気ガス浄化装置としての触媒コンバータが設けられ
ている。ところが、この触媒コンバータに使用される三
元触媒は、触媒の温度が低い時 (不活性状態) には排気
ガス中の有害物質の浄化率が低いことが知られている。
したがって、内燃機関の冷間始動後の触媒が不活性の状
態では排気ガスの浄化が十分に行なえなかった。2. Description of the Related Art Exhaust gas discharged from an internal combustion engine mounted on a vehicle contains harmful substances such as HC (hydrocarbon), CO (carbon monoxide) and NOx (nitrogen oxide). In general, a catalytic converter as an exhaust gas purifying device for purifying exhaust gas is provided in an exhaust passage of an internal combustion engine. However, it is known that the three-way catalyst used in this catalytic converter has a low purification rate of harmful substances in exhaust gas when the temperature of the catalyst is low (inactive state).
Therefore, when the catalyst is inactive after the cold start of the internal combustion engine, the exhaust gas cannot be sufficiently purified.
【０００３】そこで、触媒担体に金属を使用し、内燃機
関の始動時や触媒が不活性状態の時にこの金属担体に通
電することにより、金属触媒担体自体を発熱させて短時
間に触媒活性化温度（３００〜４００℃）まで上昇させ
るようにした電気加熱式触媒装置が提案されている。電
気加熱式触媒装置は、図１１に示すように、内燃機関の
排気ガス通路に接続された筒状のケーシング（以後外筒
という）１内に、通電することによって発熱する電気加
熱式触媒担体２と主触媒担体３を所定間隔を隔てて直列
に配設して構成されているものである。電気加熱式触媒
担体２には中心電極６が設けられており、この中心電極
６は電極部８Ａを介して外筒１の外部に引き出されてい
る。そして、この電極部８Ａと外筒１の一部に設けられ
た外部電極８Ｂとの間にはバッテリ９とスイッチＳＷが
接続されており、スイッチＳＷがオンされた時に電気加
熱式触媒担体２に通電が行われて発熱する。Therefore, when a metal is used as the catalyst carrier and the metal carrier is energized when the internal combustion engine is started or the catalyst is in an inactive state, the metal catalyst carrier itself is heated to generate a catalyst activation temperature in a short time. An electrically heated catalyst device has been proposed which is designed to be heated to (300 to 400 ° C.). As shown in FIG. 11, the electrically heated catalyst device is an electrically heated catalyst carrier 2 which generates heat when energized in a cylindrical casing (hereinafter referred to as an outer cylinder) 1 connected to an exhaust gas passage of an internal combustion engine. And the main catalyst carrier 3 are arranged in series at a predetermined interval. A central electrode 6 is provided on the electrically heated catalyst carrier 2, and the central electrode 6 is drawn out of the outer cylinder 1 via an electrode portion 8A. A battery 9 and a switch SW are connected between the electrode portion 8A and an external electrode 8B provided on a part of the outer cylinder 1, and when the switch SW is turned on, the electrically heated catalyst carrier 2 is connected. Electricity is generated and heat is generated.
【０００４】電気加熱式触媒担体２は、図１２(a) に示
すように、波板状の金属箔４（以後波箔４と言う）と、
平板状の金属箔５（以後平箔５と言う）とを重ね合わせ
てそれぞれの長手方向の端部を中心電極６に接合した
後、波箔４と平箔５とを重ねた状態のまま中心電極６の
周りに巻回し、巻き締めた構造の渦巻状の金属箔積層体
（以後ハニカム体と言う）７として構成している。この
ような波箔４と平箔５には一般に、アルミニウムを含有
する鉄系合金（例えば、２０％Ｃｒ−５％Ａｌ−７５％
Ｆｅ）等の、厚さ５０μｍ程度の箔材を使用すれば良
い。As shown in FIG. 12 (a), the electrically heated catalyst carrier 2 comprises a corrugated metal foil 4 (hereinafter referred to as corrugated foil 4).
After stacking a flat metal foil 5 (hereinafter referred to as a flat foil 5) and joining the longitudinal ends of each to the center electrode 6, the center of the corrugated foil 4 and the flat foil 5 in the stacked state A spiral metal foil laminate (hereinafter referred to as a honeycomb body) 7 having a structure in which it is wound around the electrode 6 and tightened is formed. Such corrugated foil 4 and flat foil 5 are generally iron-based alloys containing aluminum (for example, 20% Cr-5% Al-75%).
A foil material having a thickness of about 50 μm such as Fe) may be used.
【０００５】図１２(b) は金属製の波箔４と平箔５で構
成したハニカム体７の一方の端面を示すものである。波
箔４と平箔５とを重ねて中心電極６の周りに巻回した結
果、ハニカム体７には波箔４と平箔５との間の空隙によ
り形成された軸線方向の通路Ｐが中心電極６の周りに渦
巻き状に並んでいる。また、波箔４と平箔５の表面には
排気浄化触媒を担持させてある。従って、図１１のスイ
ッチＳＷをオンしてハニカム体７に通電を行って触媒活
性化温度まで昇温させた状態で、前述の通路Ｐを排気ガ
スが流れることにより、排気中の有害成分が触媒と接触
して排気ガスが浄化される。FIG. 12 (b) shows one end face of a honeycomb body 7 composed of a metallic corrugated foil 4 and a flat foil 5. As a result of stacking the corrugated foil 4 and the flat foil 5 and winding the corrugated foil 4 around the center electrode 6, the honeycomb body 7 has the axial passage P formed by the gap between the corrugated foil 4 and the flat foil 5 as the center. The electrodes 6 are arranged spirally around the electrode 6. An exhaust gas purification catalyst is carried on the surfaces of the corrugated foil 4 and the flat foil 5. Therefore, when the switch SW of FIG. 11 is turned on to energize the honeycomb body 7 to raise the temperature to the catalyst activation temperature, the exhaust gas flows through the above-mentioned passage P, so that the harmful components in the exhaust gas are And exhaust gas is purified.
【０００６】このように構成された電気加熱式触媒装置
は、排気ガス通路を流れる高温で高速の排気ガスとの接
触、機関稼働中の加熱、機関停止中の冷却の熱サイク
ル、金属製の外筒から外部への熱の放出、及びハニカム
体７と外筒１との熱容量差等により、外筒１とハニカム
体７との間に熱応力が発生し、ハニカム体７に亀裂が生
じ、電気加熱式触媒担体としての機能の低下を招くこと
がある。The electrically heated catalyst device thus constructed has a contact with high-temperature and high-speed exhaust gas flowing through the exhaust gas passage, heating during engine operation, cooling heat cycle during engine stop, and metal outer casing. Thermal stress is generated between the outer cylinder 1 and the honeycomb body 7 due to heat release from the cylinder to the outside, a difference in heat capacity between the honeycomb body 7 and the outer cylinder 1, etc. The function as a heating type catalyst carrier may be deteriorated.
【０００７】このような問題は、主触媒担体３が電気加
熱式触媒のハニカム体７と同様の金属製のハニカム体を
触媒担体としたメタル担体で構成されている場合にも発
生し、この場合の対策として、ハニカム体と外筒との間
に撓み部をもつ中間筒を介在させた構成のメタル担体
が、特開平３−１５７１３９号公報に提案されている。
しかしながら、この提案の中間筒は、その上流側端面で
の径方向、周方向へのメタル担体の大きな膨張を緩衝す
ることができず、メタル担体が損傷を受ける恐れが残っ
ていた。Such a problem also occurs when the main catalyst carrier 3 is composed of a metal carrier having a metal honeycomb body similar to the honeycomb body 7 of the electrically heated catalyst as a catalyst carrier. As a measure against the above, Japanese Patent Laid-Open No. 3-157139 proposes a metal carrier having a structure in which an intermediate cylinder having a bending portion is interposed between a honeycomb body and an outer cylinder.
However, the proposed intermediate cylinder cannot buffer large expansion of the metal carrier in the radial direction and the circumferential direction at the upstream end face, and there is a possibility that the metal carrier may be damaged.
【０００８】そこで、この改良として、中間筒２の排気
ガスの流れる方向に上流側と下流側とから交互に撓み溝
２０を設けて、中間筒２の両端部に撓み部２１を形成
し、撓み部２１の上流側端部２２の外周面を外筒３の内
周面にロウ付けにより接合し、撓み部２１の下流側端部
２３の内周面をハニカム体１の外周面にロウ付けにより
接合する排気ガス浄化触媒用メタル担体が、特開平６−
７９１８１号公報に提案されている。この提案のメタル
担体は、中間筒２が交互に片持ち状にハニカム体１と外
筒３に接合されているので、ハニカム体１の膨張、収縮
の動きが妨げられず、熱応力の発生が防止されている。Therefore, as an improvement, bending grooves 20 are alternately provided from the upstream side to the downstream side in the exhaust gas flowing direction of the intermediate cylinder 2, and the bending portions 21 are formed at both ends of the intermediate cylinder 2 to bend the intermediate cylinder 2. The outer peripheral surface of the upstream end 22 of the portion 21 is joined to the inner peripheral surface of the outer cylinder 3 by brazing, and the inner peripheral surface of the downstream end 23 of the flexible portion 21 is brazed to the outer peripheral surface of the honeycomb body 1. A metal carrier for an exhaust gas purifying catalyst to be joined is disclosed in JP-A-6-
It is proposed in Japanese Patent No. 79181. In the proposed metal carrier, since the intermediate cylinders 2 are alternately joined to the honeycomb body 1 and the outer cylinder 3 in a cantilever manner, the expansion and contraction movements of the honeycomb body 1 are not hindered, and thermal stress is not generated. It is prevented.
【０００９】[0009]
【発明が解決しようとする課題】しかしながら、特開平
６−７９１８１号公報に提案のメタル担体は、メタル担
体が主触媒担体のように全長の長いものには非常に効果
を発揮するが、電気加熱式触媒装置のように全長の短い
ものには、その構造上緩衝機能発揮しにくくなるという
問題点があった。即ち、特開平６−７９１８１号公報に
提案の中間筒は、中間筒の緩衝機能を受け持つ自由長が
長ければ緩衝機能を十分に発揮できるが、自由長が短い
と撓み部の変形量が小さくなるために、緩衝機能が十分
に発揮できないのである。従って、特開平６−７９１８
１号公報に提案の中間筒の構造を電気加熱式触媒装置の
ハニカム体と外筒との間に使用してもその緩衝効果は期
待できないことになる。However, the metal carrier proposed in Japanese Unexamined Patent Publication No. 6-79181 is very effective when the metal carrier has a long total length such as the main catalyst carrier. There is a problem in that a buffer device having a short total length, such as an electrocatalyst device, has difficulty in exerting a buffer function due to its structure. That is, the intermediate cylinder proposed in Japanese Patent Laid-Open No. 6-79181 can sufficiently exhibit the cushioning function if the free length of the intermediate cylinder is long, but the shorter the free length, the smaller the deformation amount of the bending portion becomes. Therefore, the buffer function cannot be fully exerted. Therefore, JP-A-6-7918
Even if the structure of the intermediate cylinder proposed in Japanese Patent No. 1 is used between the honeycomb body of the electrically heated catalyst device and the outer cylinder, the buffering effect cannot be expected.
【００１０】これを図１３を用いて更に詳しく説明す
る。図１３は、特開平６−７９１８１号公報に提案の中
間筒２を、外筒３とハニカム体１との間に模式的に描い
たものである。特開平６−７９１８１号公報に提案の中
間筒２は、中間筒２の上流側端部２２の外筒３との接合
部と、中間筒２の下流側端部２４のハニカム体１との接
合部との間の部分が自由に動けるクッション部となって
いる。そして、このクッション部の長さＦは、ハニカム
体１の全長Ｌが長ければ長い程大きくすることができ
る。この場合には、クッション部は緩衝機能を十分に発
揮できる。一方、電気加熱式触媒装置のように、ハニカ
ム体１の全長Ｌが非常に短い場合は、クッション部の長
さＦも短くなり、クッション部の変形量が小さくなって
緩衝効果が期待できないのである。This will be described in more detail with reference to FIG. FIG. 13 schematically shows the intermediate cylinder 2 proposed in Japanese Patent Laid-Open No. 6-79181 between the outer cylinder 3 and the honeycomb body 1. The intermediate cylinder 2 proposed in Japanese Unexamined Patent Application Publication No. 6-79181 joins the joining part of the upstream end 22 of the intermediate cylinder 2 with the outer cylinder 3 and the honeycomb body 1 of the downstream end 24 of the intermediate cylinder 2. The part between and is a cushion that can move freely. The length F of the cushion portion can be increased as the total length L of the honeycomb body 1 is increased. In this case, the cushion portion can sufficiently exhibit the cushioning function. On the other hand, when the total length L of the honeycomb body 1 is very short as in the electrically heated catalyst device, the cushion portion length F is also shortened, and the cushion portion deformation amount is small, so that the cushioning effect cannot be expected. .
【００１１】なお、中間筒２の上流側端部２２の位置を
ハニカム体１の全長Ｌ（幅）を越えて設定することも可
能であるが、外筒３との接合部位置もハニカム体１の全
長Ｌ（幅）を外して設定しなければならず、例えば、ハ
ニカム体１に近接して別のハニカム体を設置したりする
ことができず、スペース上不利となってしまうといった
問題がある。Although it is possible to set the position of the upstream end 22 of the intermediate cylinder 2 beyond the total length L (width) of the honeycomb body 1, the position of the joint with the outer cylinder 3 is also the honeycomb body 1. Must be set by removing the total length L (width) thereof, and for example, another honeycomb body cannot be installed in the vicinity of the honeycomb body 1, which is disadvantageous in terms of space. .
【００１２】そこで、本発明は、電気加熱式触媒のハニ
カム体のような、全長の短いハニカム体を使用するハニ
カム体を用いた触媒装置に対して、外筒とハニカム体と
の間に発生した半径方向への熱膨張を有効に緩衝するこ
とができる中間筒を備えたハニカム体を用いた触媒装置
を提供することを目的としている。また、本発明の他の
目的は、ハニカム体を構成する平箔と波箔とのずれであ
るスコーピングを防止するための絶縁性のリテーナを備
える電気加熱式触媒装置において、リテーナの保持部材
を別に設けることなく、中間筒の一部で代用することが
できる電気加熱式触媒装置を提供することにある。Therefore, the present invention has occurred between the outer cylinder and the honeycomb body for the catalyst device using the honeycomb body using the honeycomb body of the short length such as the honeycomb body of the electrically heated catalyst. An object of the present invention is to provide a catalyst device using a honeycomb body provided with an intermediate cylinder capable of effectively buffering thermal expansion in the radial direction. Further, another object of the present invention is to provide a retainer holding member in an electric heating type catalyst device including an insulating retainer for preventing scoping, which is a deviation between a flat foil and a corrugated foil forming a honeycomb body. An object of the present invention is to provide an electrically heated catalyst device that can be substituted by a part of the intermediate cylinder without separately providing it.
【００１３】[0013]
【課題を解決するための手段】前記目的を達成する請求
項１に記載の発明は、内燃機関の排気通路に設置され、
波板状の金属箔と平板状の金属箔とを重ね合わせた積層
金属箔を用いて円柱状のハニカム体を形成し、このハニ
カム体を触媒担体として金属外筒内に中間筒を介して収
容してなるハニカム体を用いた触媒装置において、中間
筒を、外側筒と内側筒とを備えた二重筒とし、この二重
筒の外側筒と内側筒は、長尺の耐熱性金属板をその長手
方向に沿ってＵ字状に折り曲げた後に、円筒状に成形し
て形成し、折り曲げる前の金属板には、その両端部から
幅方向に互い違いに切り込みを入れてスリットを所定間
隔で形成しておき、この金属板を折り曲げた時に、スリ
ットとこのスリットを設けることによって形成される金
属片とが互いに対向するようにし、外側筒を金属外筒に
接合し、内側筒をハニカム体に接合したことを特徴とし
ている。The invention according to claim 1 for achieving the above object is installed in an exhaust passage of an internal combustion engine,
A cylindrical honeycomb body is formed by using a laminated metal foil in which a corrugated metal foil and a flat metal foil are stacked, and the honeycomb body is housed as a catalyst carrier in a metal outer cylinder via an intermediate cylinder. In the catalyst device using the honeycomb body, the intermediate cylinder is a double cylinder including an outer cylinder and an inner cylinder, and the outer cylinder and the inner cylinder of the double cylinder are long heat-resistant metal plates. After being bent into a U shape along its longitudinal direction, it is formed into a cylindrical shape, and the metal plate before bending is formed with slits at predetermined intervals by staggering the widthwise direction from both ends of the metal plate. Then, when this metal plate is bent, the slit and the metal piece formed by providing this slit are made to face each other, the outer cylinder is bonded to the metal outer cylinder, and the inner cylinder is bonded to the honeycomb body. It is characterized by having done.
【００１４】また、請求項２に記載の発明は、請求項１
の発明において、外側筒に形成されたスリットの先端部
が内側筒に回り込むようにスリットを形成すると共に、
内側筒に形成されたスリットの先端部が外側筒に回り込
むようにスリットを形成したことを特徴としている。ま
た、請求項３に記載の発明は、請求項１の発明におい
て、二重筒に形成されたスリットの幅が、これに対向す
る金属片の幅よりも大きくなるように設定したことを特
徴としている。The invention described in claim 2 is the same as claim 1
In the invention of, while forming the slit so that the tip of the slit formed in the outer cylinder goes around the inner cylinder,
The slit is formed so that the tip of the slit formed in the inner cylinder goes around the outer cylinder. The invention according to claim 3 is characterized in that, in the invention according to claim 1, the width of the slit formed in the double cylinder is set to be larger than the width of the metal piece facing the slit. There is.
【００１５】更に、請求項４に記載の発明は、請求項１
から３の何れか１項に記載の発明において、金属製のハ
ニカム体の中心部を、他の部位との絶縁を保った状態で
導電体によって金属外筒の外部に引き出して一方の電極
とし、金属外筒を他方の電極として、これら２つの電極
間に通電を行うことにより、ハニカム体を加熱できるよ
うにして、ハニカム体を用いた触媒装置を電気加熱式触
媒装置としたことを特徴としている。Further, the invention according to claim 4 is the same as claim 1.
In the invention described in any one of 1 to 3, the central portion of the honeycomb body made of metal is drawn out to the outside of the metal outer cylinder by a conductor in a state of maintaining insulation from other portions to form one electrode, The metal outer cylinder is used as the other electrode, and the honeycomb body can be heated by energizing the two electrodes so that the catalyst device using the honeycomb body is an electrically heated catalyst device. .
【００１６】請求項５に記載の発明は、請求項４に記載
の発明において、折り曲げ部分がハニカム体の排気下流
側端部から突出するように二重筒を形成し、この突出部
分にハニカム体を支持する絶縁性のリテーナを保持させ
たことを特徴としている。請求項６に記載の発明は、請
求項１から５の何れか１項に記載の発明において、折り
曲げ部分に空間を設け、この空間内に耐熱性金属線から
成る補強材を挿通したことを特徴としている。According to a fifth aspect of the invention, in the invention according to the fourth aspect, a double cylinder is formed such that the bent portion projects from the exhaust downstream end of the honeycomb body, and the honeycomb body is formed on this protruding portion. It is characterized by holding an insulative retainer that supports the. The invention according to claim 6 is the invention according to any one of claims 1 to 5, characterized in that a space is provided in the bent portion, and a reinforcing material made of a heat-resistant metal wire is inserted into the space. I am trying.
【００１７】請求項７に記載の発明は、請求項１から６
の何れか１項に記載の発明において、二重筒の外側筒と
内側筒との間に、耐熱性の緩衝材を挿入したことを特徴
としている。請求項１に記載の発明によれば、中間筒を
耐熱性金属板を折り曲げて二重筒にし、外側筒と内側筒
の両方に排気ガスの流れる方向にスリットを設けたこと
により、中間筒の全長が短くても、外筒とハニカム体と
の間に発生した半径方向への熱膨張を有効に緩衝するこ
とができる。The invention described in claim 7 is from claim 1 to claim 6.
In the invention described in any one of 1, the heat-resistant cushioning material is inserted between the outer cylinder and the inner cylinder of the double cylinder. According to the invention as set forth in claim 1, the heat resistant metal plate is bent to form a double cylinder, and slits are provided in both the outer cylinder and the inner cylinder in the direction of exhaust gas flow. Even if the total length is short, the thermal expansion in the radial direction generated between the outer cylinder and the honeycomb body can be effectively buffered.
【００１８】請求項２に記載の発明によれば、外側筒と
内側筒に形成されたスリットの先端部が折り曲げ部を経
由して対向する筒側にまで延長されているので、撓み領
域が大きく、緩衝作用が増す。請求項３に記載の発明に
よれば、スリットの幅が対向する金属片の幅よりも大き
いので、金属片が対向するスリットの中まで移動するこ
とができ、金属片の半径方向への移動量が大きくとれる
ので、ハニカム体の半径方向への熱膨張を更に有効に緩
衝することができる。According to the invention as set forth in claim 2, since the tip portions of the slits formed in the outer cylinder and the inner cylinder are extended to the opposing cylinder side via the bent portion, the bending region is large. , The buffer action is increased. According to the invention of claim 3, since the width of the slit is larger than the width of the facing metal piece, the metal piece can move into the facing slit, and the amount of movement of the metal piece in the radial direction. As a result, the thermal expansion of the honeycomb body in the radial direction can be more effectively buffered.
【００１９】請求項４に記載の発明によれば、金属製の
ハニカム体の中心部に接続する電極と、金属外筒間に通
電を行うことによってハニカム体を加熱できるようにし
たので、ハニカム体を用いた触媒装置を電気加熱式触媒
装置とすることができる。請求項５に記載の発明によれ
ば、電気加熱式触媒装置においてハニカム体の排気下流
側端部から突出する中間筒の部分にハニカム体を支持す
る絶縁性のリテーナを保持させたので、リテーナ保持部
材が不要となる。According to the invention described in claim 4, since the honeycomb body can be heated by energizing the electrode connected to the central portion of the metal honeycomb body and the metal outer cylinder, the honeycomb body can be heated. The catalyst device using can be an electrically heated catalyst device. According to the invention described in claim 5, in the electrically heated catalyst device, the insulating retainer for supporting the honeycomb body is held in the portion of the intermediate cylinder protruding from the exhaust downstream end of the honeycomb body. No member is needed.
【００２０】請求項６に記載の発明によれば、折り曲げ
部分に設けた空間内に耐熱性金属線から成る補強材を挿
通したので、リテーナから受ける力を補強材で受けるこ
とができるので、リテーナの保持力が向上する。請求項
７に記載の発明によれば、外側筒と内側筒との間に耐熱
性の緩衝材を挿入したので、緩衝材によって確実にハニ
カム体の熱収縮、膨張を吸収できる。According to the sixth aspect of the present invention, since the reinforcing member made of the heat resistant metal wire is inserted into the space provided in the bent portion, the reinforcing member can receive the force received from the retainer. The holding power of is improved. According to the invention described in claim 7, since the heat-resistant cushioning material is inserted between the outer cylinder and the inner cylinder, the cushioning material can reliably absorb the thermal contraction and expansion of the honeycomb body.
【００２１】[0021]
【発明の実施の形態】以下添付図面を用いて本発明の実
施形態を具体的な実施例に基づいて詳細に説明する。な
お、ここではハニカム体を用いた触媒装置の実施例とし
て、電気加熱式触媒装置を例にとって説明し、図１１，
図１２で既に説明した電気加熱式触媒装置に使用される
部材と同じ部材には同じ符号を付して説明する。Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. It should be noted that, as an example of the catalyst device using the honeycomb body, an electrically heated catalyst device will be described as an example, and FIG.
The same members as those used in the electrically heated catalyst device described with reference to FIG.
【００２２】図１は本発明の第１の実施例の電気加熱式
触媒装置１０の構成を示す組立斜視図、及び、この電気
加熱式触媒装置１０に使用する中間筒４０の作製手順を
説明する説明図を組み合わせた図である。また、図２
(a) は図１の電気加熱式触媒装置１０の組立後の中間筒
４０の取付状態を説明する排気ガスの流れに沿った方向
の断面図であり、図２(b) は図２(a) のＡ−Ａ線におけ
る断面図である。FIG. 1 is an assembly perspective view showing the construction of an electrically heated catalyst device 10 according to a first embodiment of the present invention, and a procedure for producing an intermediate cylinder 40 used in this electrically heated catalyst device 10 will be described. It is the figure which combined the explanatory view. FIG.
2A is a sectional view taken along the flow of exhaust gas for explaining a mounting state of the intermediate cylinder 40 after assembly of the electrically heated catalyst device 10 of FIG. 1, and FIG. 3] is a cross-sectional view taken along line AA in FIG.
【００２３】図１に示すように、電気加熱式触媒装置１
０は、金属製の外筒１１の内部に、中間筒４０を介して
図１２で説明した波箔４と平箔５とから構成されるハニ
カム体７が挿入されて構成される。中間筒４０の高さは
ハニカム体７の高さと略等しく形成されている。ハニカ
ム体７の中央部には中心電極６があり、この中心電極６
は図２(a) に示すリード部６Ａによって外筒１１の外周
面に設けられたホルダ８Ｃを貫通する電極部８Ａに接続
されている。電極部８Ａと外筒１１の所定箇所に設けら
れた外部電極８Ｂとの間にはバッテリ９とスイッチＳＷ
が設けられており、スイッチＳＷのオンによってハニカ
ム体７が通電される。As shown in FIG. 1, an electrically heated catalyst device 1
0 is configured by inserting the honeycomb body 7 including the corrugated foil 4 and the flat foil 5 described in FIG. 12 into the inside of the metal outer cylinder 11 via the intermediate cylinder 40. The height of the intermediate cylinder 40 is formed to be substantially equal to the height of the honeycomb body 7. The central electrode 6 is provided in the center of the honeycomb body 7.
Is connected to an electrode portion 8A penetrating a holder 8C provided on the outer peripheral surface of the outer cylinder 11 by a lead portion 6A shown in FIG. 2 (a). A battery 9 and a switch SW are provided between the electrode portion 8A and the external electrode 8B provided at a predetermined position of the outer cylinder 11.
Is provided, and the honeycomb body 7 is energized by turning on the switch SW.
【００２４】中間筒４０は外側筒４１と内側筒４２から
構成されており、外側筒４１と内側筒４２の間には、図
２(a) に示すように空間４３が設けられている。この中
間筒４０は、図１に示すような長尺の耐熱性金属板４４
を、その中心線Ｆ−Ｆに沿ってＵ字状に折り曲げること
によって作ることができる。この時、折り曲げる前の長
尺の耐熱性金属板４４には、その長手方向に沿った両端
部から幅方向に互い違いに切り込みを入れてスリット４
５を所定間隔で形成しておく。このスリット４５の形成
に際しては、金属板４４を折り曲げた時に、スリット４
５とこれに隣接するスリット４５の間に形成される金属
片４６とが互いに対向するようにする。また、この実施
例では、スリット４５は金属板４４の中心線Ｆ−Ｆを越
えて反対側の端部側まで切り込まれている。The intermediate cylinder 40 is composed of an outer cylinder 41 and an inner cylinder 42, and a space 43 is provided between the outer cylinder 41 and the inner cylinder 42 as shown in FIG. 2 (a). This intermediate cylinder 40 is made of a long heat-resistant metal plate 44 as shown in FIG.
Can be made by bending it in a U-shape along its center line FF. At this time, the long heat-resistant metal plate 44 before being bent is provided with slits in which slits are staggered in the width direction from both ends along the longitudinal direction.
5 are formed at predetermined intervals. When forming the slit 45, the slit 4 is formed when the metal plate 44 is bent.
5 and the metal piece 46 formed between the slits 45 adjacent thereto are arranged to face each other. Further, in this embodiment, the slit 45 is cut to the opposite end side beyond the center line FF of the metal plate 44.
【００２５】このようにスリット４５と金属片４６が形
成された長尺の耐熱性金属板４４を、その中心線Ｆ−Ｆ
に沿ってＵ字状に折り曲げると、図１の右下部に示す断
面Ｕ字状の棒状体４４′が出来上がる。そして、この断
面Ｕ字状の棒状体４４′を、ハニカム体７の外径に等し
い円弧Ｃに沿って折り曲げて円筒状に成形すると、外側
筒４１と内側筒４２とを備えた中間筒４０が形成され
る。断面Ｕ字状の棒状体４４′を折り曲げて円筒状とす
る場合に、棒状体４４′の両端部は接合しても良いが、
近接させるだけで接合しなくても良い。The long heat-resistant metal plate 44 having the slit 45 and the metal piece 46 formed in this manner is attached to the center line FF thereof.
A U-shaped rod-shaped body 44 'having a U-shaped cross section shown in the lower right portion of FIG. When this rod-shaped body 44 'having a U-shaped cross section is bent along an arc C equal to the outer diameter of the honeycomb body 7 to form a cylindrical shape, an intermediate cylinder 40 having an outer cylinder 41 and an inner cylinder 42 is obtained. It is formed. When the rod-shaped body 44 'having a U-shaped cross section is bent into a cylindrical shape, both ends of the rod-shaped body 44' may be joined.
It is not necessary to join them only by bringing them close to each other.
【００２６】この中間筒４０は、外筒１１とハニカム体
７との間に挿入した状態で、外側筒４１が外筒１１にロ
ー付け等により接合され、内側筒４２がハニカム体７に
ロー付け等により接合されている。図２(a) における４
９は外側筒４１と内側筒４２のロー付け部を示す。この
ように、中間筒４０が外筒１１とハニカム体７との間に
挿入された電気加熱式触媒装置１０では、図２(b) に示
すように、ハニカム体７と外筒１１との間に空間４３が
形成されている。よって、ハニカム体７が熱膨張して径
方向に膨張しても、この膨張が空間４３によって緩衝さ
れる。また、中間筒４０の外側筒４１と内側筒４２の各
金属片４６の間には、間隙ａのスリット４５が設けられ
ている。従って、ハニカム体７が熱変形して周方向に収
縮しても、この収縮をスリット４５によって緩衝するこ
とができる。The intermediate cylinder 40 is inserted between the outer cylinder 11 and the honeycomb body 7, and the outer cylinder 41 is joined to the outer cylinder 11 by brazing or the like, and the inner cylinder 42 is brazed to the honeycomb body 7. Are joined together. 4 in Figure 2 (a)
Reference numeral 9 denotes a brazed portion of the outer cylinder 41 and the inner cylinder 42. Thus, in the electrically heated catalyst device 10 in which the intermediate cylinder 40 is inserted between the outer cylinder 11 and the honeycomb body 7, as shown in FIG. A space 43 is formed in the space. Therefore, even if the honeycomb body 7 thermally expands and expands in the radial direction, this expansion is buffered by the space 43. In addition, a slit 45 having a gap a is provided between each metal piece 46 of the outer cylinder 41 and the inner cylinder 42 of the intermediate cylinder 40. Therefore, even if the honeycomb body 7 is thermally deformed and contracts in the circumferential direction, the contraction can be buffered by the slit 45.
【００２７】このように、図１，図２のように構成した
第１の実施例の電気加熱式触媒装置１０では、ハニカム
体７と外筒１１との間に二重筒構成の中間筒４０が配置
されているので、排気ガスの流れ方向の全長が短いハニ
カム体７に対しても、そのケーシングである外筒１１と
ハニカム体７との間に発生した半径方向、或いは周方向
への熱収縮を有効に緩衝することができ、ハニカム体７
の熱収縮による損傷を防止することができる。As described above, in the electrically heated catalyst device 10 of the first embodiment configured as shown in FIGS. 1 and 2, the intermediate tube 40 having a double tube structure is provided between the honeycomb body 7 and the outer tube 11. Are arranged, the heat generated in the radial direction or in the circumferential direction between the honeycomb body 7 and the outer cylinder 11 which is the casing of the honeycomb body 7 having a short total length in the exhaust gas flow direction is also provided. The shrinkage can be effectively buffered, and the honeycomb body 7
It is possible to prevent damage due to heat shrinkage.
【００２８】図３(a) から図３(d) は図１，図２の電気
加熱式触媒装置１０の中間筒４０を作製する長尺の耐熱
性金属板４４のその他の実施例を示すものである。図３
(a) に示す長尺の耐熱性金属板４４ａでは、スリット４
５が金属板４４ａの中心線Ｆ−Ｆを越えて反対側の端部
側まで大きく切り込まれている。この例では、金属板４
４ａをＵ字状に折り曲げた時に、外側筒４１のスリット
４５の先端部が内側筒４２側に回り込んでいると共に、
内側筒４２のスリット４５の先端部が外側筒４１側に回
り込んでいる。この結果、図３(a) に示す長尺の耐熱性
金属板４４ａから作製される中間筒４０は、ハニカム体
７の周方向の収縮に対して緩衝能力が高い。FIGS. 3 (a) to 3 (d) show another embodiment of the long heat-resistant metal plate 44 for producing the intermediate cylinder 40 of the electrically heated catalyst device 10 of FIGS. Is. FIG.
In the long heat-resistant metal plate 44a shown in (a), the slit 4
5 is largely cut beyond the center line F-F of the metal plate 44a to the opposite end side. In this example, the metal plate 4
When 4a is bent into a U-shape, the tip end of the slit 45 of the outer cylinder 41 wraps around to the inner cylinder 42 side, and
The tip end of the slit 45 of the inner cylinder 42 wraps around the outer cylinder 41. As a result, the intermediate cylinder 40 made of the long heat-resistant metal plate 44a shown in FIG. 3 (a) has a high cushioning ability against the shrinkage of the honeycomb body 7 in the circumferential direction.
【００２９】図３(b) に示す長尺の耐熱性金属板４４ｂ
では、切り込みが金属板４４ａの中心線Ｆ−Ｆの手前で
終わっており、スリット４５の長さが短い例である。こ
の例の長尺の耐熱性金属板４４ｂから作製される中間筒
４０は、Ｕ字状に折り曲げた時のばね力が大きいので、
ハニカム体７の径方向の収縮に対して緩衝能力が高い。A long heat-resistant metal plate 44b shown in FIG. 3 (b)
In the example, the cut ends before the center line FF of the metal plate 44a and the length of the slit 45 is short. Since the intermediate cylinder 40 made from the long heat-resistant metal plate 44b of this example has a large spring force when bent into a U shape,
It has a high cushioning ability against the radial contraction of the honeycomb body 7.
【００３０】図３(c) と図３(d) に示す長尺の耐熱性金
属板４４ｃ，４４ｄでは、スリット４５の幅Ｘが、金属
板４４ｃ，４４ｄをＵ字状に折り曲げた時に、これに対
向する金属片４６の幅Ｙよりも大きくなるように、スリ
ット４５が形成されている。これらの実施例では、例え
ば、スリット４５の幅Ｘと金属片４６の幅Ｙの差は、図
１〜図３(b) におけるスリット４５の幅ａの２倍の２ａ
となっている。そして、図３(c) の例では一方側のスリ
ット４５の先端部が、金属板４４ｃの中心線Ｆ−Ｆを越
えて反対側の端部側まで大きく切り込まれており、他方
側のスリット４５の先端部が、金属板４４ｃの中心線Ｆ
−Ｆの手前で終わっている。また、図３(d) の例では両
方側のスリット４５の先端部が、金属板４４ｃの中心線
Ｆ−Ｆの手前で終わっている。In the long heat-resistant metal plates 44c and 44d shown in FIGS. 3 (c) and 3 (d), the width X of the slit 45 is larger when the metal plates 44c and 44d are bent in a U shape. The slit 45 is formed so as to be larger than the width Y of the metal piece 46 opposed to the. In these embodiments, for example, the difference between the width X of the slit 45 and the width Y of the metal piece 46 is 2a, which is twice the width a of the slit 45 in FIGS. 1 to 3B.
It has become. In the example of FIG. 3 (c), the leading end of the slit 45 on one side is largely cut to the end side on the other side beyond the center line FF of the metal plate 44c, and the slit on the other side is cut. 45 is the center line F of the metal plate 44c.
-It ends before F. Further, in the example of FIG. 3D, the tip ends of the slits 45 on both sides end before the center line FF of the metal plate 44c.
【００３１】図４は、図１，図２で説明した中間筒４０
を、図３(c), (d)の長尺の耐熱性金属板４４ｃ，４４ｄ
を使用して作製した時の、図２(b) と同じ部位の断面図
である。この図から分かるように、内側筒４２の金属片
４６に対向する外側筒４１の部位には、金属片４６の幅
Ｙよりも広い幅Ｘのスリット４５が位置している。そし
て、前述のように、スリット４５の幅Ｘは、金属片４６
の幅Ｙの両側に長さａずつ広くなっている。FIG. 4 shows the intermediate cylinder 40 described with reference to FIGS.
3C and 3D, the long heat-resistant metal plates 44c and 44d
FIG. 3 is a cross-sectional view of the same portion as that in FIG. As can be seen from this figure, a slit 45 having a width X wider than the width Y of the metal piece 46 is located at a portion of the outer cylinder 41 facing the metal piece 46 of the inner cylinder 42. Then, as described above, the width X of the slit 45 is determined by the metal piece 46.
The width a is widened by a length a on both sides.
【００３２】従って、図３(c) ，(d) のように形成され
た長尺の耐熱性金属板４４ｃ，４４ｄを使用して中間筒
４０が作製された場合は、ハニカム体７が膨張すると、
内側筒４２の金属片４６は、外側筒４１のスリット４５
内に入り込む状態まで変形することができる。また、金
属片４６がスリット４５内に入り込んだ場合でも、その
両側には距離ａだけの余裕がある。従って、図３(c) ，
(d) の耐熱性金属板４４ｃ，４４ｄを使用して形成した
中間筒４０が組み込まれた電気加熱式触媒装置１０で
は、外筒１１とハニカム体７との間に発生した半径方
向、或いは周方向への熱膨張に対して余裕をもってこれ
を吸収することができるので、ハニカム体７と外筒１１
の熱収縮に対する緩衝度が大きく、ハニカム体７の損傷
の防止に対して更に有効である。Therefore, when the intermediate cylinder 40 is manufactured by using the long heat-resistant metal plates 44c and 44d formed as shown in FIGS. 3C and 3D, when the honeycomb body 7 expands. ,
The metal piece 46 of the inner cylinder 42 corresponds to the slit 45 of the outer cylinder 41.
It can be deformed to the state of entering. Further, even if the metal piece 46 enters the slit 45, there is a margin of the distance a on both sides thereof. Therefore, as shown in FIG.
In the electrically heated catalyst device 10 in which the intermediate cylinder 40 formed by using the heat-resistant metal plates 44c and 44d of (d) is incorporated, the radial direction or the circumference generated between the outer cylinder 11 and the honeycomb body 7 is increased. Since the thermal expansion in the direction can be absorbed with a sufficient margin, the honeycomb body 7 and the outer cylinder 11 can be absorbed.
Has a large buffering force against the heat shrinkage, and is more effective in preventing damage to the honeycomb body 7.
【００３３】図５(a) は第１の実施例の変形実施例を示
すものであり、図２のＢ部を拡大して示している。この
変形実施例は、電気加熱式触媒装置１０の中間筒４０の
外側筒４１と内側筒４２との間の空間４３に緩衝材４７
が挿入されたものである。緩衝材４７は、例えば、図５
(b) に示すように、細い耐熱性の金属ワイヤ（例えば直
径０．１〜０．５ｍｍ程度の金属ワイヤ）をメリヤス編
みしたものを集合させてプレス型等によって所定密度に
成型したものから構成すれば良い。この緩衝材４７と中
間筒４０の外側筒４１と内側筒４２とは接合されていて
も、接合されていなくても良いこのように、中間筒４０
の外側筒４１と内側筒４２との間の空間４３に緩衝材４
７が挿入されると、確実にハニカム体７の熱収縮、熱膨
張を吸収することができる。また、電気加熱式触媒装置
１０では、中間筒４０がハニカム体７と外筒１１とを電
気的に接続する役割を果たしているので、緩衝材４７は
必ずしも導電体である必要がなく、セラミック繊維等の
非導電体でも良い。このように、中間筒４０に電気の導
通部を受け持ってもらえるので、緩衝材４７の材質選定
の自由度が増す。FIG. 5 (a) shows a modification of the first embodiment, in which the portion B of FIG. 2 is shown enlarged. In this modified embodiment, a cushioning material 47 is provided in the space 43 between the outer cylinder 41 and the inner cylinder 42 of the intermediate cylinder 40 of the electrically heated catalyst device 10.
Is inserted. The cushioning material 47 is, for example, as shown in FIG.
As shown in (b), it is composed of thin heat-resistant metal wires (for example, metal wires with a diameter of 0.1 to 0.5 mm) knitted and assembled into a predetermined density by a press die or the like. Just do it. The cushioning material 47 and the outer cylinder 41 and the inner cylinder 42 of the intermediate cylinder 40 may or may not be bonded to each other.
In the space 43 between the outer cylinder 41 and the inner cylinder 42 of the
When 7 is inserted, it is possible to reliably absorb the thermal contraction and thermal expansion of the honeycomb body 7. Further, in the electrically heated catalyst device 10, since the intermediate cylinder 40 plays a role of electrically connecting the honeycomb body 7 and the outer cylinder 11, the cushioning material 47 does not necessarily have to be a conductor, and a ceramic fiber or the like. It may be a non-conductive material. In this way, since the intermediate cylinder 40 is in charge of the electrical conduction portion, the degree of freedom in selecting the material of the cushioning material 47 increases.
【００３４】図６は本発明の第２の実施例の電気加熱式
触媒装置１０′の構成を示すものであり、図６(a) は第
１の実施例の電気加熱式触媒装置１０の図２(a) と同じ
部位の断面図を示しており、図６(b) は図６(a) の中間
筒４０′の構成を説明する部分拡大組立斜視図である。
ここで、第２の実施例の電気加熱式触媒装置１０′の構
成を説明する前に、図１０を用いてハニカム体７をリテ
ーナと保持部材とで保持した構成の従来の電気加熱式触
媒装置１００の一例の構成を説明する。FIG. 6 shows the construction of an electrically heated catalyst device 10 'according to the second embodiment of the present invention, and FIG. 6 (a) is a diagram of the electrically heated catalyst device 10 according to the first embodiment. 2 (a) is a sectional view of the same portion as FIG. 2 (a), and FIG. 6 (b) is a partially enlarged perspective view illustrating the structure of the intermediate cylinder 40 'of FIG. 6 (a).
Here, before explaining the structure of the electrically heated catalyst device 10 'of the second embodiment, a conventional electrically heated catalyst device having a structure in which the honeycomb body 7 is held by a retainer and a holding member using FIG. An example of the configuration of 100 will be described.
【００３５】この例の従来の電気加熱式触媒装置１００
においては、図１０(a) ，(b) に示すように、外筒１１
の中にハニカム体７が直接収容されている点を除き、そ
の中心電極６がリード部６Ａを介して外筒１１の側面に
設けられたホルダ８Ｃを介して電極部８Ａに接続されて
いる点は本発明と同じである。一方、従来の電気加熱式
触媒装置１００では、ハニカム体７の排気ガスの流れの
下流側の端面が、絶縁性のリテーナであるセラミックス
バー２２で支持されていた。セラミックスバー２２は断
面が長方形の角柱状をしており、２本のセラミックスバ
ー２２がハニカム体７の排気下流側の端面を横切るよう
に配置されていた。そして、このセラミックスバー２２
は、外筒１１に固着された保持部材２０の収容溝１３に
その両端部が保持されていた。また、２本のセラミック
スバー２２の長さは、２つの収容溝１３間に掛け渡され
た時に、外筒１１の内周面に届かない長さに形成されて
いた。The conventional electrically heated catalyst device 100 of this example
In FIG. 10, as shown in FIGS. 10 (a) and 10 (b), the outer cylinder 11
The center electrode 6 is connected to the electrode portion 8A through a lead portion 6A and a holder 8C provided on the side surface of the outer cylinder 11 except that the honeycomb body 7 is directly housed inside. Is the same as the present invention. On the other hand, in the conventional electrically heated catalyst device 100, the end face of the honeycomb body 7 on the downstream side of the flow of the exhaust gas is supported by the ceramic bar 22 which is an insulating retainer. The ceramics bar 22 had a rectangular prism shape in cross section, and two ceramics bars 22 were arranged so as to cross the end face on the exhaust downstream side of the honeycomb body 7. And this ceramic bar 22
Both ends were held in the housing groove 13 of the holding member 20 fixed to the outer cylinder 11. Further, the length of the two ceramic bars 22 is formed so as not to reach the inner peripheral surface of the outer cylinder 11 when the ceramic bars 22 are hung between the two housing grooves 13.
【００３６】本発明の第２の実施例の電気加熱式触媒装
置１０′は、セラミックスバー２２によってハニカム体
７の排気下流側の端面を支持するように構成された従来
の電気加熱式触媒装置１００を改良したものであり、こ
の保持部材２０を、中間筒４０で代用することによって
部品点数を減らすようにしたものである。従って、第２
の実施例では、図６(a) ，(b) に示すように、第１の実
施例の中間筒４０が排気下流側に延長されて、延長部４
０Ｅを備えた中間筒４０′が形成されている。この延長
部４０Ｅにおける耐熱性金属板４４の折り曲げ部分ＲＵ
は、ハニカム体７の排気下流側端部から突出する位置に
ある。そして、この中間筒４０′の延長部４０Ｅに、図
６(b) に示すように収容穴４８が、中間筒４０′の外側
筒４１と内側筒４２とを貫通して形成され、この収容穴
４８にハニカム体７を支持するセラミックスバー２２の
両端部が保持されるようになっている。図６(a) におけ
る４９は外側筒４１と内側筒４２のロー付け部を示す。The electrically heated catalyst device 10 ′ of the second embodiment of the present invention is a conventional electrically heated catalyst device 100 configured to support the end face of the honeycomb body 7 on the downstream side of exhaust gas by the ceramic bar 22. The holding member 20 is replaced by the intermediate cylinder 40 to reduce the number of parts. Therefore, the second
In this embodiment, as shown in FIGS. 6 (a) and 6 (b), the intermediate cylinder 40 of the first embodiment is extended to the exhaust downstream side, and the extension portion 4
An intermediate cylinder 40 'with 0E is formed. Bent portion RU of heat-resistant metal plate 44 in this extension portion 40E
Is at a position projecting from the exhaust downstream end of the honeycomb body 7. Then, as shown in FIG. 6 (b), an accommodation hole 48 is formed in the extension portion 40E of the intermediate cylinder 40 'so as to penetrate the outer cylinder 41 and the inner cylinder 42 of the intermediate cylinder 40'. Both ends of the ceramic bar 22 that supports the honeycomb body 7 are held by 48. Reference numeral 49 in FIG. 6A indicates a brazed portion of the outer cylinder 41 and the inner cylinder 42.
【００３７】このように、第２の実施例の電気加熱式触
媒装置１０′では、ハニカム体７を排気下流側で支持す
るセラミックスバー２２が、中間筒４０′の延長部４０
Ｅに設けられた収容穴４８に保持されている。従って、
セラミックスバー２２を保持するために従来必要であっ
た保持部材２０が不要となるので、部品点数を減らすこ
とができる。As described above, in the electrically heated catalyst device 10 'of the second embodiment, the ceramic bar 22 for supporting the honeycomb body 7 on the exhaust downstream side is provided with the extension portion 40 of the intermediate cylinder 40'.
It is held in the accommodation hole 48 provided in E. Therefore,
Since the holding member 20 conventionally required for holding the ceramics bar 22 is not required, the number of parts can be reduced.
【００３８】図７は第２の実施例における中間筒４０′
の変形実施例を示すものである。前述の実施例では、耐
熱性金属板４４がハニカム体７の排気下流側端部から突
出する部分の折り曲げ部ＲＵがＵ字状に折り曲げられて
中間筒４０′が形成されていた。一方、この実施例で
は、図７(a) に示すように、耐熱性金属板４４がハニカ
ム体７の排気下流側端部から突出する部分において略Ｊ
字状に折り曲げられて折り曲げ部ＲＪが形成されてい
る。そして、図７(b) に示すように、折り曲げ部分ＲＪ
の終端部分に収容穴４８が、外側筒４１と内側筒４２と
を貫通して形成されている。FIG. 7 shows an intermediate cylinder 40 'in the second embodiment.
FIG. In the above-described embodiment, the bent portion RU of the portion of the heat-resistant metal plate 44 protruding from the exhaust downstream end of the honeycomb body 7 is bent in a U shape to form the intermediate cylinder 40 '. On the other hand, in this embodiment, as shown in FIG. 7 (a), the heat-resistant metal plate 44 is substantially J at the portion protruding from the exhaust downstream end of the honeycomb body 7.
The bent portion RJ is formed by being bent in a letter shape. Then, as shown in FIG. 7 (b), the bent portion RJ
An accommodation hole 48 is formed at the terminal end of the penetrating the outer cylinder 41 and the inner cylinder 42.
【００３９】このように、耐熱性金属板４４が略Ｊ字状
に折り曲げられていると、この折り曲げ部ＲＪへの応力
集中を避けることができる。また、折り曲げ部ＲＪが回
り込んだ部分に収容穴４８が形成されていると、セラミ
ックスバー２２と収容穴４８との引っ掛かり代が大きく
なり、セラミックスバー２２の脱落が起きにくくなる。As described above, when the heat-resistant metal plate 44 is bent into a substantially J-shape, it is possible to avoid stress concentration on the bent portion RJ. Further, when the accommodation hole 48 is formed in the portion around the bent portion RJ, the catching margin between the ceramic bar 22 and the accommodation hole 48 becomes large, and the ceramic bar 22 is less likely to fall off.
【００４０】図８(a) は本発明の第３の実施例の電気加
熱式触媒装置１０″の構成を示すものであり、この第３
の実施例も、セラミックスバー２２によってハニカム体
７の排気下流側の端面を支持するように構成された電気
加熱式触媒装置１０″である。第３の実施例において
も、セラミックスバー２２を中間筒４０″の延長部４０
Ｅに保持させることによって部品点数を減らすようにし
ている。図８(a) における４９は外側筒４１と内側筒４
２のロー付け部を示す。FIG. 8 (a) shows the structure of an electrically heated catalyst device 10 "according to the third embodiment of the present invention.
The embodiment is also an electric heating type catalyst device 10 ″ configured to support the end face of the honeycomb body 7 on the exhaust downstream side by the ceramics bar 22. Also in the third embodiment, the ceramics bar 22 is provided with an intermediate tube. 40 "extension 40
By holding E, the number of parts is reduced. In FIG. 8A, 49 is an outer cylinder 41 and an inner cylinder 4.
2 shows the brazing part.
【００４１】第３の実施例では、ハニカム体７の排気下
流側に延長された耐熱性金属板４４は、図７の実施例と
同様に略Ｊ字状に折り曲げられ、図８(b) に示すよう
に、折り曲げ部ＲＪを持つ中間筒４０″が形成されてい
る。そして、この中間筒４０″の折り曲げ部ＲＪの内部
空間には、１本のワイヤメッシュロープ５０が挿通され
ている。そして、中間筒４０″の延長部４０Ｅに、中間
筒４０″の外側筒４１と内側筒４２とを貫通して設けら
れるセラミックスバー２２の収容穴４８は、図８(c) に
示すように、中間筒４０″の折り曲げ部ＲＪの内部空間
を挿通するワイヤメッシュロープ５０の上端部が露出す
るように形成されている。従って、収容穴４８に挿通さ
れたセラミックスバー２２の端部は、ワイヤメッシュロ
ープ５０の上に載置されるようになっている。In the third embodiment, the heat-resistant metal plate 44 extended to the exhaust gas downstream side of the honeycomb body 7 is bent into a substantially J shape in the same manner as in the embodiment of FIG. 7, and as shown in FIG. 8 (b). As shown, an intermediate cylinder 40 ″ having a bent portion RJ is formed. Then, one wire mesh rope 50 is inserted into the internal space of the bent portion RJ of the intermediate cylinder 40 ″. Then, the accommodating hole 48 of the ceramic bar 22 which is provided in the extension portion 40E of the intermediate cylinder 40 ″ through the outer cylinder 41 and the inner cylinder 42 of the intermediate cylinder 40 ″ is, as shown in FIG. 8 (c), The wire mesh rope 50 is inserted so as to expose the upper end portion of the wire mesh rope 50 that is inserted through the inner space of the bent portion RJ of the intermediate tube 40 ″. It is designed to be placed on the rope 50.
【００４２】このように、第３の実施例の電気加熱式触
媒装置１０″では、ハニカム体７を排気下流側で支持す
るセラミックスバー２２が、中間筒４０″の延長部４０
Ｅに設けられた収容穴４８の中のワイヤメッシュロープ
５０に保持されている。従って、セラミックスバー２２
を保持するために従来必要であった保持部材２０が不要
となるので、部品点数を減らすことができる。また、ワ
イヤメッシュロープ５０の上にセラミックスバー２２が
載置されることにより、セラミックスバー２２の保持に
クッション性を持たせることができ、ハニカム体７の熱
膨張や組み付け交差によるセラミックスバー２２の遊び
やガタが少なくなり、振動等によるセラミックスバー２
２や収容穴４８の破損や磨耗を低減することができる。As described above, in the electrically heated catalyst device 10 "of the third embodiment, the ceramic bar 22 for supporting the honeycomb body 7 on the exhaust downstream side is provided with the extension portion 40 of the intermediate cylinder 40".
It is held by the wire mesh rope 50 in the accommodation hole 48 provided in E. Therefore, the ceramic bar 22
Since the holding member 20 which has been conventionally required for holding the above is unnecessary, the number of parts can be reduced. Further, by placing the ceramics bar 22 on the wire mesh rope 50, it is possible to provide the ceramics bar 22 with a cushioning property, and the honeycomb bar 7 is expanded by the thermal expansion and the assembly bar intersects. Ceramic bar 2 due to less vibration and vibration
It is possible to reduce damage and wear of the housing 2 and the housing hole 48.
【００４３】図９(a) は図６(a) に示した第２の実施例
の電気加熱式触媒装置１０′の中間筒４０′の外側筒４
１と内側筒４２との間に緩衝材４７を挿入した変形実施
例の構成を示す部分拡大断面図である。また、図９(b)
は図８(a) に示した第３の実施例の電気加熱式触媒装置
１０″の中間筒４０″の外側筒４１と内側筒４２との間
に緩衝材４７を挿入した変形実施例の構成を示す部分拡
大断面図である。緩衝材４７には、図５(b) で説明した
細い耐熱性の金属ワイヤをメリヤス編みしたものを集合
させてプレス型等によって所定密度に成型したものを使
用すれば良い。また、この緩衝材４７と中間筒４０の外
側筒４１と内側筒４２とは接合されていても、接合され
ていなくても良いこのように、中間筒４０の外側筒４１
と内側筒４２との間の空間４３に緩衝材４７が挿入され
ると、確実にハニカム体７の熱収縮、熱膨張を吸収する
ことができる。FIG. 9A shows the outer cylinder 4 of the intermediate cylinder 40 'of the electrically heated catalyst device 10' of the second embodiment shown in FIG. 6A.
It is a partial expanded sectional view which shows the structure of the modified example which inserted the buffer material 47 between 1 and the inner side cylinder 42. FIG. Also, FIG. 9 (b)
8A is a configuration of a modified embodiment in which a cushioning material 47 is inserted between the outer cylinder 41 and the inner cylinder 42 of the intermediate cylinder 40 ″ of the electrically heated catalyst device 10 ″ of the third embodiment shown in FIG. 8A. It is a partial expanded sectional view showing. As the cushioning material 47, the thin heat-resistant metal wires described in FIG. 5 (b), which are knitted by knitting, may be assembled and formed into a predetermined density by a press die or the like. Further, the cushioning material 47 and the outer cylinder 41 and the inner cylinder 42 of the intermediate cylinder 40 may or may not be bonded to each other.
When the cushioning material 47 is inserted into the space 43 between the inner cylinder 42 and the inner cylinder 42, it is possible to reliably absorb the thermal contraction and thermal expansion of the honeycomb body 7.
【００４４】以上、電気加熱式触媒装置を例にとってハ
ニカム体を用いた触媒装置を説明したが、本発明は電気
加熱式触媒装置以外の、全長の短いハニカム体を金属担
体としたハニカム体を用いた触媒装置にも有効に適用で
きる。また、全長の長いハニカム体を金属担体としたハ
ニカム体を用いた触媒装置に対しては、中間筒の全長を
長く形成するか、或いは、中間筒を複数個使用すること
によって対応することができる。Although the catalyst device using the honeycomb body has been described above by taking the electric heating type catalyst device as an example, the present invention uses a honeycomb body using a short length honeycomb body as a metal carrier, other than the electric heating type catalyst device. It can be effectively applied to the conventional catalyst device. Further, a catalyst device using a honeycomb body having a long-length honeycomb body as a metal carrier can be handled by forming the intermediate cylinder to have a long total length or using a plurality of intermediate cylinders. .
【００４５】[0045]
【発明の効果】以上説明したように、本発明の第１の発
明によれば、波箔と平箔とからなるハニカム体を金属外
筒内に中間筒を介して収容し、このハニカム体に通電を
行って加熱する電気加熱式触媒装置において、中間筒を
耐熱性金属板を折り曲げて二重筒にし、外側筒と内側筒
の両方に排気ガスの流れる方向にスリットを設けたこと
により、中間筒の全長が短くても、外筒とハニカム体と
の間に発生した半径方向への熱膨張を有効に緩衝するこ
とができるという効果がある。As described above, according to the first aspect of the present invention, a honeycomb body composed of corrugated foil and flat foil is housed in a metal outer cylinder via an intermediate cylinder, and this honeycomb body is In an electrically heated catalyst device that heats by energizing, the middle cylinder is made into a double cylinder by bending a heat-resistant metal plate, and slits are provided in both the outer cylinder and the inner cylinder in the direction in which exhaust gas flows. Even if the total length of the cylinder is short, there is an effect that the thermal expansion in the radial direction generated between the outer cylinder and the honeycomb body can be effectively buffered.
【００４６】また、本発明の第２の発明によれば、ハニ
カム体を金属外筒内に中間筒を介して収容し、このハニ
カム体をリテーナと保持部材とで保持する電気加熱式触
媒装置において、ハニカム体の排気下流側端部から突出
する中間筒の部分にハニカム体を支持する絶縁性のリテ
ーナを保持させたので、リテーナ保持部材が不要とな
り、部品点数を減らすことができるという効果がある。Further, according to the second aspect of the present invention, in an electrically heated catalyst device in which a honeycomb body is housed in a metal outer cylinder via an intermediate cylinder and the honeycomb body is held by a retainer and a holding member. Since the insulating retainer that supports the honeycomb body is held in the portion of the intermediate cylinder that projects from the exhaust downstream end of the honeycomb body, there is no need for a retainer holding member, and the number of parts can be reduced. .
【００４７】更に、本発明の第３の発明によれば、ハニ
カム体を金属外筒内に中間筒を介して収容し、このハニ
カム体をリテーナと保持部材とで保持する電気加熱式触
媒装置において、ハニカム体の排気下流側端部から突出
する中間筒の折り曲げ部分に空間を設け、この空間内に
耐熱性金属線から成るクッション性を持つ補強材を挿通
し、この補強材にハニカム体を支持する絶縁性のリテー
ナを保持させたので、リテーナ保持部材が不要となり部
品点数を減らすことができると共に、ハニカム体の変形
や組み付け交差によるリテーナの遊びやガタを少なし
て、リテーナや中間筒の破損や磨耗を低減することがで
きるという効果がある。Further, according to the third aspect of the present invention, in an electrically heated catalyst device in which a honeycomb body is housed in a metal outer cylinder via an intermediate cylinder and the honeycomb body is held by a retainer and a holding member. A space is provided in the bent portion of the intermediate cylinder protruding from the exhaust downstream end of the honeycomb body, and a reinforcing material having a cushioning property made of a heat-resistant metal wire is inserted into the space, and the honeycomb material is supported by the reinforcing material. Since it retains an insulating retainer that does not require a retainer holding member, the number of parts can be reduced. There is an effect that abrasion and wear can be reduced.
【図１】本発明の第１の実施例の電気加熱式触媒装置の
構成を示す組立斜視図、及び、中間筒の作製手順を説明
する説明図を組み合わせた図である。FIG. 1 is a view in which an assembled perspective view showing a configuration of an electrically heated catalyst device according to a first embodiment of the present invention and an explanatory view for explaining a manufacturing procedure of an intermediate cylinder are combined.
【図２】(a) は図１の電気加熱式触媒装置における中間
筒の取付状態を説明する電気加熱式触媒装置の排気ガス
の流れに沿った方向の断面図、(b) は(a) のＡ−Ａ線に
おける断面図である。FIG. 2 (a) is a cross-sectional view of the electrically heated catalyst device of FIG. 1 illustrating a mounting state of an intermediate cylinder in a direction along an exhaust gas flow of the electrically heated catalyst device, and FIG. 3 is a cross-sectional view taken along line AA of FIG.
【図３】(a) から(d) は図１の電気加熱式触媒装置の中
間筒を作製する長尺の耐熱性金属板の４つの実施例を示
す、長尺の耐熱性金属板の平面図である。3 (a) to 3 (d) are planes of a long heat-resistant metal plate showing four examples of the long heat-resistant metal plate for producing the intermediate cylinder of the electrically heated catalyst device of FIG. It is a figure.
【図４】図２(a) の中間筒を、図３(c) ，(d) の長尺の
耐熱性金属板を使用して作製した時の図２(b) と同じ部
位の断面図である。FIG. 4 is a sectional view of the same portion as FIG. 2 (b) when the intermediate cylinder of FIG. 2 (a) is manufactured using the long heat-resistant metal plate of FIGS. 3 (c) and (d). Is.
【図５】(a) は第１の実施例の電気加熱式触媒装置の中
間筒の外側筒と内側筒との間に緩衝材を挿入した変形実
施例の構成を示す部分拡大断面図、(b) は(a) の緩衝材
の一例の部分拡大図である。FIG. 5 (a) is a partially enlarged cross-sectional view showing the configuration of a modified embodiment in which a cushioning material is inserted between the outer cylinder and the inner cylinder of the intermediate cylinder of the electrically heated catalyst device of the first embodiment, b) is a partially enlarged view of an example of the cushioning material of (a).
【図６】(a) は本発明の第２の実施例の電気加熱式触媒
装置の構成を示す排気ガスの流れに沿った方向の断面
図、(b) は(a) の中間筒の構成を説明する部分拡大組立
斜視図である。6 (a) is a sectional view in the direction along the flow of exhaust gas showing the configuration of the electrically heated catalyst device of the second embodiment of the present invention, and FIG. 6 (b) is the configuration of the intermediate cylinder of FIG. 6 (a). It is a partial expansion assembly perspective view explaining.
【図７】(a) は図６の第２の実施例の電気加熱式触媒装
置における中間筒の別の形状を示す断面図、(b) は(a)
のように折り曲げた中間筒の要部拡大斜視図である。7 (a) is a cross-sectional view showing another shape of the intermediate cylinder in the electrically heated catalyst device of the second embodiment of FIG. 6, (b) is (a).
FIG. 6 is an enlarged perspective view of a main part of the intermediate tube bent as described above.
【図８】(a) は本発明の第３の実施例の電気加熱式触媒
装置の構成を示す排気ガスの流れに沿った方向の断面
図、(b) は(a) の中間筒の構成を説明する部分拡大組立
斜視図、(c) は(a) の要部拡大断面図である。8 (a) is a sectional view taken along the direction of exhaust gas flow showing the configuration of an electrically heated catalyst device according to a third embodiment of the present invention, and FIG. 8 (b) is a configuration of the intermediate cylinder of (a). FIG. 3C is an enlarged perspective view of a partially enlarged assembly for explaining the above, and FIG.
【図９】(a) は図６(a) の第２の実施例の電気加熱式触
媒装置の中間筒の外側筒と内側筒との間に緩衝材を挿入
した変形実施例の構成を示す部分拡大断面図、(b) は図
８(a) の第３の実施例の電気加熱式触媒装置の中間筒の
外側筒と内側筒との間に緩衝材を挿入した変形実施例の
構成を示す部分拡大断面図である。9 (a) shows the structure of a modified embodiment in which a cushioning material is inserted between the outer cylinder and the inner cylinder of the intermediate cylinder of the electrically heated catalyst device of the second embodiment of FIG. 6 (a). FIG. 8B is a partially enlarged sectional view showing the structure of a modified embodiment in which a cushioning material is inserted between the outer cylinder and the inner cylinder of the intermediate cylinder of the electrically heated catalyst device of the third embodiment shown in FIG. 8A. It is a partial expanded sectional view shown.
【図１０】(a) はハニカム体をリテーナと保持部材とで
保持した構成の従来の電気加熱式触媒装置の一例の排気
ガスの流れに沿った方向の断面図、(b) は(a) のＤ−Ｄ
線における断面図である。FIG. 10 (a) is a cross-sectional view taken along the direction of exhaust gas flow of an example of a conventional electrically heated catalyst device in which a honeycomb body is held by a retainer and a holding member, and FIG. 10 (b) is shown in FIG. D-D
It is sectional drawing in a line.
【図１１】従来の電気加熱式触媒装置の構造例を示す側
断面説明図である。FIG. 11 is a side cross-sectional explanatory view showing a structural example of a conventional electrically heated catalyst device.
【図１２】(a) は公知のハニカム体の形成方法を説明す
る説明図、(b) は(a) のようにして巻かれたハニカム体
の一方の端面の概要を示す説明図である。FIG. 12 (a) is an explanatory view for explaining a known method for forming a honeycomb body, and FIG. 12 (b) is an explanatory view for showing an outline of one end face of the honeycomb body wound as in (a).
【図１３】特開平６−７９１８１号公報に提案の中間筒
の機能を模式的に示す説明図である。FIG. 13 is an explanatory diagram schematically showing the function of an intermediate cylinder proposed in Japanese Patent Laid-Open No. 6-79181.
１…ケーシング（外筒） ２…電気加熱式触媒担体 ３…主触媒担体 ４…波箔（波板状の金属箔） ５…平箔（平板状の金属箔） ６…中心電極 ７…ハニカム体（金属箔積層体） ８Ａ…電極部 １０…第１の実施例の電気加熱式触媒装置 １０′…第２の実施例の電気加熱式触媒装置 １０″…第３の実施例の電気加熱式触媒装置 １１…外筒 １１Ｅ…延長部 １２…金属筒 １３…収容溝 ２２…セラミックスバー ４０，４０′，４０″…中間筒 ４０Ｅ…中間筒の延長部 ４１…外側筒 ４２…内側筒 ４３…空間 ４４…耐熱性金属板 ４５…スリット ４６…緩衝材 ４８…収容穴 ５０…ロープ DESCRIPTION OF SYMBOLS 1 ... Casing (outer cylinder) 2 ... Electric heating type catalyst carrier 3 ... Main catalyst carrier 4 ... Corrugated foil (corrugated metal foil) 5 ... Flat foil (planar metal foil) 6 ... Center electrode 7 ... Honeycomb body (Metal foil laminated body) 8A ... Electrode part 10 ... Electric heating type catalyst device of the first embodiment 10 '... Electric heating type catalyst device of the second embodiment 10 "... Electric heating type catalyst of the third embodiment Device 11 ... Outer cylinder 11E ... Extension 12 ... Metal cylinder 13 ... Housing groove 22 ... Ceramics bar 40, 40 ', 40 "... Intermediate cylinder 40E ... Extension of intermediate cylinder 41 ... Outer cylinder 42 ... Inner cylinder 43 ... Space 44 ... Heat-resistant metal plate 45 ... Slit 46 ... Cushioning material 48 ... Accommodation hole 50 ... Rope
Claims (7)
の金属箔と平板状の金属箔とを重ね合わせた積層金属箔
を用いて円柱状の金属製のハニカム体を形成し、このハ
ニカム体を触媒担体として金属外筒内に中間筒を介して
収容してなるハニカム体を用いた触媒装置において、 前記中間筒を、外側筒と内側筒とを備えた二重筒とし、 この二重筒の外側筒と内側筒は、長尺の耐熱性金属板を
その長手方向に沿ってＵ字状に折り曲げた後に、円筒状
に成形して形成し、 折り曲げる前の前記金属板には、その両端部から幅方向
に互い違いに切り込みを入れてスリットを所定間隔で形
成しておき、前記金属板を折り曲げた時に、前記スリッ
トとこのスリットを設けることによって形成される金属
片とが互いに対向するようにし、 前記外側筒を前記金属外筒に接合し、前記内側筒を前記
ハニカム体に接合したことを特徴とするハニカム体を用
いた触媒装置。1. A cylindrical metal honeycomb body is formed by using a laminated metal foil which is installed in an exhaust passage of an internal combustion engine and which is formed by superposing a corrugated metal foil and a flat metal foil. In a catalyst device using a honeycomb body in which a honeycomb body is housed in a metal outer cylinder via an intermediate cylinder as a catalyst carrier, the intermediate cylinder is a double cylinder including an outer cylinder and an inner cylinder. The outer cylinder and the inner cylinder of the heavy cylinder are formed by bending a long heat-resistant metal plate into a U shape along its longitudinal direction and then forming it into a cylindrical shape. The slits are formed at predetermined intervals by staggering notches in the width direction from both ends thereof, and when the metal plate is bent, the slit and the metal piece formed by providing the slit face each other. The outer tube into the gold Joined to the outer cylinder, the catalyst device using the honeycomb body, characterized in that it has joined the inner tubular in said honeycomb body.
媒装置において、 前記外側筒に形成されたスリットの先端部が前記内側筒
に回り込むように前記スリットを形成すると共に、前記
内側筒に形成されたスリットの先端部が前記外側筒に回
り込むように前記スリットを形成したことを特徴とする
ハニカム体を用いた触媒装置。2. The catalyst device using the honeycomb body according to claim 1, wherein the slit is formed so that a tip end portion of a slit formed in the outer cylinder goes around the inner cylinder, and the inner cylinder is provided with the slit. A catalyst device using a honeycomb body, characterized in that the slit is formed so that a tip portion of the formed slit wraps around the outer cylinder.
媒装置において、 前記二重筒に形成されたスリットの幅が、これに対向す
る前記金属片の幅よりも大きくなるように設定したこと
を特徴とするハニカム体を用いた触媒装置。3. The catalyst device using the honeycomb body according to claim 1, wherein a width of a slit formed in the double cylinder is set to be larger than a width of the metal piece facing the slit. A catalyst device using a honeycomb body.
ニカム体を用いた触媒装置において、 前記金属製のハニカム体の中心部を、他の部位との絶縁
を保った状態で導電体によって前記金属外筒の外部に引
き出して一方の電極とし、 前記金属外筒を他方の電極として、 これら２つの電極間に通電を行うことにより、前記ハニ
カム体を加熱できるようにして、前記ハニカム体を用い
た触媒装置を電気加熱式触媒装置としたことを特徴とす
るハニカム体を用いた触媒装置。4. The catalyst device using the honeycomb body according to claim 1, wherein the central portion of the metallic honeycomb body is electrically conductive while being insulated from other portions. The honeycomb body can be heated by pulling it out of the metal outer cylinder by the body to form one electrode, and the metal outer cylinder as the other electrode so that the honeycomb body can be heated. A catalyst device using a honeycomb body, wherein the catalyst device using the body is an electrically heated catalyst device.
媒装置において、 前記折り曲げ部分が前記ハニカム体の排気下流側端部か
ら突出するように前記二重筒を形成し、この突出部分に
前記ハニカム体を支持する絶縁性のリテーナを保持させ
たことを特徴とするハニカム体を用いた触媒装置。5. The catalyst device using the honeycomb body according to claim 4, wherein the double cylinder is formed so that the bent portion projects from an exhaust downstream end of the honeycomb body, and the projecting portion has A catalyst device using a honeycomb body, characterized in that an insulating retainer for supporting the honeycomb body is held.
ニカム体を用いた触媒装置において、 前記折り曲げ部分に空間を設け、この空間内に耐熱性金
属線から成る補強材を挿通したことを特徴とするハニカ
ム体を用いた触媒装置。6. The catalyst device using the honeycomb body according to claim 1, wherein a space is provided in the bent portion, and a reinforcing material made of a heat resistant metal wire is inserted into the space. A catalyst device using a honeycomb body.
ニカム体を用いた触媒装置において、 前記二重筒の外側筒と内側筒との間に、耐熱性の緩衝材
を挿入したことを特徴とするハニカム体を用いた触媒装
置。7. A catalyst device using the honeycomb body according to claim 1, wherein a heat-resistant cushioning material is inserted between the outer cylinder and the inner cylinder of the double cylinder. A catalyst device using a honeycomb body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13367796A JP3239755B2 (en) | 1996-05-28 | 1996-05-28 | Catalyst device using honeycomb body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13367796A JP3239755B2 (en) | 1996-05-28 | 1996-05-28 | Catalyst device using honeycomb body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09317456A true JPH09317456A (en) | 1997-12-09 |
| JP3239755B2 JP3239755B2 (en) | 2001-12-17 |
Family
ID=15110310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13367796A Expired - Fee Related JP3239755B2 (en) | 1996-05-28 | 1996-05-28 | Catalyst device using honeycomb body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3239755B2 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998045583A1 (en) * | 1997-04-10 | 1998-10-15 | Mitsubishi Chemical Corporation | Catalyst converter |
| WO2002023020A1 (en) * | 2000-09-13 | 2002-03-21 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Honeycomb body having a segmented sheathing tube |
| WO2003014544A1 (en) * | 2001-08-02 | 2003-02-20 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Contraction limiter for a honeycomb body |
| JP2010209876A (en) * | 2009-03-12 | 2010-09-24 | Toyota Motor Corp | Exhaust emission control device |
| WO2012025979A1 (en) * | 2010-08-23 | 2012-03-01 | トヨタ自動車株式会社 | Electric heating catalyst |
| KR20140144252A (en) * | 2012-04-02 | 2014-12-18 | 존슨 맛쎄이 퍼블릭 리미티드 컴파니 | Wire standoffs for stackable structural reactors |
| CN104335001A (en) * | 2012-04-02 | 2015-02-04 | 庄信万丰股份有限公司 | Wire standoffs for stackable structural reactors |
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| TW521082B (en) | 2000-09-12 | 2003-02-21 | Kuraray Co | Polyamide resin composition |
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1996
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Cited By (22)
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|---|---|---|---|---|
| WO1998045583A1 (en) * | 1997-04-10 | 1998-10-15 | Mitsubishi Chemical Corporation | Catalyst converter |
| WO2002023020A1 (en) * | 2000-09-13 | 2002-03-21 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Honeycomb body having a segmented sheathing tube |
| GB2386083A (en) * | 2000-09-13 | 2003-09-10 | Emitec Emissionstechnologie | Honeycomb body having a segmented sheathing tube |
| US8147763B2 (en) | 2001-08-02 | 2012-04-03 | Emitec Gesellschaft Fuer Emissionstechnologie Mbh | Honeycomb body having a contraction limiter |
| WO2003014544A1 (en) * | 2001-08-02 | 2003-02-20 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Contraction limiter for a honeycomb body |
| JP2004537414A (en) * | 2001-08-02 | 2004-12-16 | エミテク・ゲゼルシャフト・フュール・エミシオーンテクノロギー・ミット・ベシュレンクテル・ハフツング | Shrinkage limit for honeycomb elements |
| CN1314886C (en) * | 2001-08-02 | 2007-05-09 | 排放技术有限公司 | Contraction limiter for honeycomb body |
| JP4716654B2 (en) * | 2001-08-02 | 2011-07-06 | エミテク・ゲゼルシャフト・フュール・エミシオーンテクノロギー・ミット・ベシュレンクテル・ハフツング | Shrinkage restriction for honeycomb elements |
| JP2010209876A (en) * | 2009-03-12 | 2010-09-24 | Toyota Motor Corp | Exhaust emission control device |
| JP5590127B2 (en) * | 2010-08-23 | 2014-09-17 | トヨタ自動車株式会社 | Electric heating catalyst |
| WO2012025979A1 (en) * | 2010-08-23 | 2012-03-01 | トヨタ自動車株式会社 | Electric heating catalyst |
| KR20140144252A (en) * | 2012-04-02 | 2014-12-18 | 존슨 맛쎄이 퍼블릭 리미티드 컴파니 | Wire standoffs for stackable structural reactors |
| CN104335001A (en) * | 2012-04-02 | 2015-02-04 | 庄信万丰股份有限公司 | Wire standoffs for stackable structural reactors |
| JP2015512333A (en) * | 2012-04-02 | 2015-04-27 | ジョンソン、マッセイ、パブリック、リミテッド、カンパニーＪｏｈｎｓｏｎ Ｍａｔｔｈｅｙ Ｐｕｂｌｉｃｌｉｍｉｔｅｄ Ｃｏｍｐａｎｙ | Wire standoffs for stackable structural reactors |
| EP2834586B1 (en) * | 2012-04-02 | 2019-02-27 | Johnson Matthey Public Limited Company | Wire standoffs for stackable structural reactors |
| CN109954450A (en) * | 2012-04-02 | 2019-07-02 | 庄信万丰股份有限公司 | Wire rod support for stackable configurations reactor |
| CN109954450B (en) * | 2012-04-02 | 2022-06-17 | 庄信万丰股份有限公司 | Wire mount for stackable structural reactor |
| KR20190093511A (en) * | 2018-02-01 | 2019-08-09 | 포르시아 쥐스뗌 데샤피망 | Heater with facilitated handling for the exhaust gas purification device of a vehicle |
| CN110107382A (en) * | 2018-02-01 | 2019-08-09 | 富尔西亚排气***公司 | The heater for facilitating manipulation of off-gas cleaning equipment for vehicle |
| JP2019157852A (en) * | 2018-02-01 | 2019-09-19 | フォルシア システム デシャップマン | Heater easy in operability for exhaust emission control device of vehicle |
| US10731530B2 (en) | 2018-02-01 | 2020-08-04 | Faurecia Systems D'echappement | Heater with facilitated handling for the exhaust gas purification device of a vehicle |
| CN110107382B (en) * | 2018-02-01 | 2021-01-26 | 富尔西亚排气***公司 | Heater for an exhaust gas purification device of a vehicle, which is easy to handle |
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