JPH09201537A - Metal catalyst carrier in catalytic converter and its preparation - Google Patents
Metal catalyst carrier in catalytic converter and its preparationInfo
- Publication number
- JPH09201537A JPH09201537A JP8013052A JP1305296A JPH09201537A JP H09201537 A JPH09201537 A JP H09201537A JP 8013052 A JP8013052 A JP 8013052A JP 1305296 A JP1305296 A JP 1305296A JP H09201537 A JPH09201537 A JP H09201537A
- Authority
- JP
- Japan
- Prior art keywords
- catalyst carrier
- metal catalyst
- corrugated
- winding direction
- rows
- 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.)
- Pending
Links
- 239000003054 catalyst Substances 0.000 title claims abstract description 72
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 68
- 239000002184 metal Substances 0.000 title claims abstract description 68
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 11
- 238000004804 winding Methods 0.000 claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 claims abstract description 13
- 230000010363 phase shift Effects 0.000 claims description 4
- 239000011295 pitch Substances 0.000 description 12
- 230000008646 thermal stress Effects 0.000 description 6
- 238000003466 welding Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 238000005304 joining Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009751 slip forming Methods 0.000 description 3
- 238000005219 brazing Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- 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、触媒コンバータに
用いられる金属触媒担体とその製造方法に関する。TECHNICAL FIELD The present invention relates to a metal catalyst carrier used in a catalytic converter and a method for producing the same.
【０００２】[0002]
【従来の技術】従来、例えば車両排気系には、エンジン
から排出された排ガスを浄化する触媒コンバータが装着
されているが、触媒担体として、図７に示すように帯状
に裁断した薄肉な金属製の波板１と平板３とを交互に重
ねて、これらを多重に巻回したハニカム構造の金属触媒
担体５が広く使用されており、斯かる金属触媒担体５に
貴金属触媒の担持処理を施した後、これを触媒容器に収
納して車両排気系に装着することで排ガスの浄化を図っ
ている。2. Description of the Related Art Conventionally, for example, a vehicle exhaust system is equipped with a catalytic converter for purifying exhaust gas emitted from an engine. As a catalyst carrier, a thin metal member cut into strips as shown in FIG. The corrugated plate 1 and the flat plate 3 are alternately used and the metal catalyst carrier 5 having a honeycomb structure in which the corrugated plates 1 and 3 are wound in multiple layers is widely used. The metal catalyst carrier 5 is subjected to a noble metal catalyst supporting treatment. After that, this is housed in a catalyst container and attached to a vehicle exhaust system to purify exhaust gas.
【０００３】ところで、従来、金属触媒担体５の製造に
当たり、波板１と平板３の相対移動をなくしてフィルム
アウト現象を防止するため、波板１と平板３の当接部分
を溶接又はロー材で接合したり、金属触媒担体５をダイ
ス等の加圧治具で緊締加圧し、これを真空状態で加熱し
て波板１と平板３を一体に拡散接合させる等の方法が採
られている。By the way, conventionally, in the production of the metal catalyst carrier 5, in order to prevent the film-out phenomenon by eliminating the relative movement of the corrugated plate 1 and the flat plate 3, the contact portion between the corrugated plate 1 and the flat plate 3 is welded or brazed. And the metal catalyst carrier 5 is clamped with a pressure jig such as a die and heated in a vacuum state to integrally diffuse and bond the corrugated plate 1 and the flat plate 3 to each other. .
【０００４】[0004]
【発明が解決しようとする課題】而して、上述したよう
に従来の金属触媒担体５にあっては、波板１と平板３を
多層に接合して排ガスが通過するセル７を形成している
が、平板３を使用する分だけ重量が重くなり、又、波板
１は高温の排ガスによる熱応力を吸収できるが、平板３
は熱応力を吸収し難く、更に波板１と平板３の接合箇所
に応力歪みが発生して破断や脱落を引き起こす虞があっ
た。As described above, in the conventional metal catalyst carrier 5, the corrugated plate 1 and the flat plate 3 are joined in multiple layers to form the cell 7 through which exhaust gas passes. However, the corrugated plate 1 can absorb the thermal stress due to the high temperature exhaust gas because the weight of the flat plate 3 is increased.
It is difficult to absorb thermal stress, and stress distortion may occur at the joint between the corrugated plate 1 and the flat plate 3 to cause breakage or drop.
【０００５】又、排ガスが層流となってセル７をストレ
ートに通り抜けていくため、排ガスと貴金属触媒との接
触が直線的で触媒効率が悪いといった欠点も指摘されて
いる。更に又、金属触媒担体の製造上、波板１と平板３
との溶接やロー付け，拡散接合による接合作業は面倒
で、コストが嵩むといった欠点も指摘されていた。尚、
特開平５−１３８０４０号公報には、波形が所定ピッチ
で連続的に形成された金属製の波板が交互に位置するよ
うに多層に組み付けられて、全体がハニカム構造をなす
触媒コンバータの金属触媒担体であって、当該波板が全
体の軸方向に於て複数列に区画され、区画された各列の
波形のピッチが隣接する相互間でずれている金属触媒担
体が開示されている。Further, it has been pointed out that the exhaust gas forms a laminar flow and passes straight through the cell 7, so that the contact between the exhaust gas and the noble metal catalyst is linear and the catalyst efficiency is poor. Furthermore, in manufacturing the metal catalyst carrier, the corrugated plate 1 and the flat plate 3 are used.
It has been pointed out that the welding work such as welding, brazing, and diffusion welding is troublesome and the cost is high. still,
Japanese Unexamined Patent Publication No. 5-138040 discloses a metal catalyst for a catalytic converter in which metal corrugated plates, in which corrugations are continuously formed at a predetermined pitch, are assembled in multiple layers so that the corrugated plates are alternately located, and which has a honeycomb structure as a whole. A metal catalyst carrier is disclosed which is a carrier in which the corrugated plate is divided into a plurality of rows in the entire axial direction, and the pitches of the corrugations of the divided rows are different from each other.
【０００６】而して、斯かる金属触媒担体にあっては、
平板を使用しない分だけ軽量化が図れると共に、図７に
示す金属触媒担体５に比し通過する排ガスに乱流が発生
するため、触媒効率を向上させることが可能となる。然
し、斯様に区画された各列の波形のピッチが、隣接する
相互間でずれた波板を多重に巻回した場合、巻回された
波板相互が重合してしまう箇所が多く生じ、触媒効率
上、必ずしも好ましいものとはいえなかった。Thus, in such a metal catalyst carrier,
As the flat plate is not used, the weight can be reduced and turbulent flow is generated in the exhaust gas passing therethrough as compared with the metal catalyst carrier 5 shown in FIG. 7, so that the catalyst efficiency can be improved. However, when the corrugated pitch of each row thus divided is wound multiple corrugated plates displaced from each other adjacent to each other, there are many places where the wound corrugated plates overlap each other, It was not always preferable in terms of catalyst efficiency.
【０００７】本発明は斯かる実情に鑑み案出されたもの
で、製造工程での接合作業を不要とすると共に、軽量化
を図り触媒効率の向上を図った触媒コンバータの金属触
媒担体とその製造方法を提供することを目的とする。The present invention has been devised in view of the above circumstances, and eliminates the need for joining work in the manufacturing process, reduces the weight, and improves the catalytic efficiency of a metal catalyst carrier for a catalytic converter and its manufacture. The purpose is to provide a method.
【０００８】[0008]
【課題を解決するための手段】斯かる目的を達成するた
め、請求項１に係る触媒コンバータの金属触媒担体は、
巻回方向へ区画した複数列に、隣接する各列と位相をず
らせて波形が所定ピッチで連続する薄肉な帯状の金属製
の波板と、巻回方向へ区画した複数列に波形が所定ピッ
チで連続し、隣接する各列の波形の位相のずれを上記波
板と異にした薄肉な帯状の金属製の波板を、交互に重ね
て多重に巻回したものである。In order to achieve such an object, a metal catalyst carrier of a catalytic converter according to claim 1 is
A thin strip-shaped corrugated metal plate in which the corrugations are continuous in a predetermined pitch in a plurality of rows divided in the winding direction, and the corrugations are arranged in a predetermined pitch in the plurality of rows divided in the winding direction. The corrugated plate made of metal and having a thin band shape in which the phase difference between the corrugated waveforms of adjacent columns is different from that of the corrugated plate is alternately superposed and wound in multiple layers.
【０００９】そして、請求項２に係る金属触媒担体の製
造方法は、巻回方向へ区画した複数列に、隣接する各列
と位相をずらせて波形が所定ピッチで連続する薄肉な帯
状の金属製の波板と、巻回方向へ区画した複数列に波形
が所定ピッチで連続し、隣接する各列の波形の位相のず
れを上記波板と異にした薄肉な帯状の金属製の波板とを
形成し、これらを交互に重ね乍ら、多重に巻回していく
ことを特徴とする。In the method for producing a metal catalyst carrier according to a second aspect, a plurality of rows partitioned in the winding direction are made of a thin strip-shaped metal in which the waveform is continuous at a predetermined pitch by shifting the phase from each adjacent row. And a corrugated plate made of a thin strip-shaped metal in which corrugations are continuous at a predetermined pitch in a plurality of rows partitioned in the winding direction, and the phase shift of corrugations in adjacent rows is different from that of the corrugated board. Is formed, and these are alternately piled up and wound in multiple layers.
【００１０】（作用）請求項１に係る発明によれば、交
互に位置する各波板の波形の端部が相互に噛み合って波
板相互の相対移動を防止する。又、金属触媒担体に触媒
の担持処理を施した後、これを触媒容器に収納して車両
排気系に装着することで排ガスの浄化が図られるが、排
ガスは各波形の端部で分岐し広く拡散して、触媒表面と
接触し乍ら金属触媒担体を流下することとなる。(Operation) According to the first aspect of the invention, the corrugated ends of the corrugated plates that are alternately positioned mesh with each other to prevent relative movement of the corrugated plates. Also, after the catalyst is loaded on the metal catalyst carrier, it is housed in the catalyst container and installed in the vehicle exhaust system to purify the exhaust gas, but the exhaust gas is branched at the end of each waveform and widely spread. When it diffuses and comes into contact with the catalyst surface, the metal catalyst carrier flows down.
【００１１】そして、請求項２に係る発明方法によれ
ば、波板を交互に重ね乍ら多重に巻回していけば、交互
に位置する各波板の波形の端部が相互に噛み合って波板
の相対移動を防止するので、波板相互を接合することな
く作業性よく金属触媒担体が製造されることとなる。According to the second aspect of the present invention, if the corrugated plates are alternately superposed and wound in multiple layers, the corrugated end portions of the corrugated plates located alternately are meshed with each other to form a wave. Since the plates are prevented from moving relative to each other, the metal catalyst carrier can be manufactured with good workability without joining the corrugated plates to each other.
【００１２】[0012]
【発明の実施の形態】以下、本発明の実施形態を図面に
基づき詳細に説明する。図１は請求項１に係る金属触媒
担体の一実施形態の概略斜視図、又、図２はその要部拡
大正面図を示し、本実施形態に係る金属触媒担体９は、
波板と平板を多重に巻回した図７の金属触媒担体と異な
り、２枚の薄肉な帯状の金属（例えば、Ｆｅ−Ｃｒ−Ａ
ｌ合金）製の波板１１，１３を交互に重ね、これらを多
重に巻回して構成されている。Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a schematic perspective view of an embodiment of a metal catalyst carrier according to claim 1, and FIG. 2 is an enlarged front view of a main part thereof, showing a metal catalyst carrier 9 according to the present embodiment.
Unlike the metal catalyst carrier of FIG. 7 in which a corrugated plate and a flat plate are wound in multiple layers, two thin band-shaped metals (for example, Fe-Cr-A
(1 alloy) corrugated sheets 11 and 13 are alternately stacked and wound in multiple layers.
【００１３】而して、波板１１は、図３及び図４に示す
ように巻回方向（図中、矢印Ａ方向）へ複数の列１５に
区画されると共に、各列１５は互いに分離せず、図中、
１５ａで示す部位で連結した構造となっている。そし
て、各列１５には、夫々、隣接する各列１５と位相θ1
をずらして同一形状の波形１１ａが同一ピッチで連続し
て形成されている。As shown in FIGS. 3 and 4, the corrugated plate 11 is divided into a plurality of rows 15 in the winding direction (direction of arrow A in the drawings), and the rows 15 are separated from each other. No, in the figure,
It has a structure in which it is connected at the site indicated by 15a. Then, each column 15 has a phase θ 1 with each adjacent column 15.
The waveforms 11a having the same shape are continuously formed at the same pitch by shifting the positions.
【００１４】又、波板１３も同じく巻回方向へ上記波板
１１と同数列に区画されて、波板１１と同様、各列が互
いに分離せずに連結した構造となっており、図５に示す
ように各列には、夫々、隣接する各列と位相θ2 （θ1
＜θ2 ）をずらして波板１１と同一形状の波形１３ａが
同一ピッチで連続して形成されている。そして、上記両
波板１１，１３が交互に重なり合い乍ら多重に巻回され
て本実施形態に係る金属触媒担体９が形成されており、
斯かる構造によれば排ガス通路が複雑となると共に、交
互に位置する各波板１１，１３の波形１１ａ，１３ａの
端部が相互に噛み合って、波板１１，１３の相対移動が
防止されることとなる。Further, the corrugated sheet 13 is also divided into the same number of rows as the corrugated sheet 11 in the winding direction, and like the corrugated sheet 11, each row is connected without being separated from each other. As shown in, each column has a phase θ 2 (θ 1 (θ 1
Waveforms 13a having the same shape as the corrugated plate 11 are continuously formed at the same pitch by shifting <θ 2 ). The corrugated plates 11 and 13 are alternately overlapped and wound in multiple layers to form the metal catalyst carrier 9 according to the present embodiment.
According to such a structure, the exhaust gas passage becomes complicated, and the ends of the corrugated plates 11a and 13a of the corrugated plates 11 and 13 that are alternately positioned mesh with each other to prevent relative movement of the corrugated plates 11 and 13. It will be.
【００１５】本実施形態に係る金属触媒担体９はこのよ
うに構成されており、当該金属触媒担体９は、請求項２
に係る発明方法の一実施形態によって以下の如く製造さ
れる。図６は金属触媒担体９の製造方法を示す概略図を
示し、図中、１７，１９は波板１１，１３を成形する金
属薄鋼板からなる板材で、当該板材１７，１９が、夫
々、回転する一対のコルゲート加工ギヤ２１，２３に連
続的に供給されて、板材１７，１９に対し波形１１ａ，
１３ａの成形が行われる。The metal catalyst carrier 9 according to the present embodiment is configured in this way, and the metal catalyst carrier 9 is defined by claim 2.
It is manufactured as follows by one embodiment of the invented method according to the present invention. FIG. 6 is a schematic view showing a method for producing the metal catalyst carrier 9, in which 17 and 19 are plate materials made of a metal thin steel plate for forming the corrugated plates 11 and 13, and the plate materials 17 and 19 are respectively rotated. Are continuously supplied to the pair of corrugated gears 21 and 23, and the corrugated 11a,
Molding of 13a is performed.
【００１６】而して、図示しないが各コルゲート加工ギ
ヤ２１，２３は複数枚のギヤが積層して、対となるギヤ
が互いに噛合した構造となっており、斯かるコルゲート
加工ギヤ２１，２３により板材１７，１９を加工するこ
とで、隣接する各列と位相をずらせて波形１１ａ，１３
ａが所定ピッチで連続する波板１１，１３が成形される
こととなる。Although not shown, each of the corrugated gears 21 and 23 has a structure in which a plurality of gears are laminated and a pair of gears mesh with each other. By processing the plate materials 17 and 19, the phases are shifted from the adjacent rows to form the waveforms 11a and 13a.
Corrugated plates 11 and 13 in which a is continuous at a predetermined pitch are formed.
【００１７】そして、上述の如く成形された波板１１，
１３が重ねられ、これらの端部が巻取芯部２５に固定さ
れる。そして、一方の波板１３にテンション付加ロール
２７を介して張力を作用させ乍ら巻取芯部２５を回転さ
せることで、波板１１，１３が多重に巻回されて本実施
形態に係る金属触媒担体９が製造されることとなる。
尚、本実施形態に於ても、巻回した波板１１，１３がば
らけるのを防止するため、波板１１，１３が多重に巻回
されて所定径になった処で最外周の波板１１，１３を金
属触媒担体９にスポット溶接した後、両波板１１，１３
を切断することは従来と同様である。Then, the corrugated sheet 11 formed as described above,
13 are piled up, and these ends are fixed to the winding core portion 25. Then, by applying tension to one of the corrugated plates 13 through the tension applying roll 27 to rotate the winding core portion 25, the corrugated plates 11 and 13 are wound in multiple layers, and the metal according to the present embodiment is wound. The catalyst carrier 9 will be manufactured.
Also in this embodiment, in order to prevent the wound corrugated plates 11 and 13 from coming apart, when the corrugated plates 11 and 13 are wound in multiple layers to have a predetermined diameter, the outermost corrugated corrugations are formed. After spot welding the plates 11 and 13 to the metal catalyst carrier 9, the corrugated plates 11 and 13
The cutting of is similar to the conventional one.
【００１８】このように、本実施形態に係る金属触媒担
体９は、巻回方向へ区画した複数の列１５に、隣接する
各列１５と位相をずらせて波形１１ａが所定ピッチで連
続する波板１１と、巻回方向へ区画した複数列に波形１
３ａが所定ピッチで連続し、隣接する各列の波形１３ａ
の位相のずれを上記波板１１と異にした波板１３を多重
に巻回したものであるから、交互に位置する各波板１
１，１３の波形１１ａ，１３ａの端部が相互に噛み合っ
て、波板１１，１３相互の相対移動を防止する。As described above, in the metal catalyst carrier 9 according to this embodiment, a plurality of rows 15 partitioned in the winding direction are corrugated in which the waveforms 11a are continuous at a predetermined pitch by shifting the phase from the adjacent rows 15. 11 and corrugated 1 in multiple rows divided in the winding direction
3a are continuous at a predetermined pitch, and waveforms 13a in adjacent columns
Since the corrugated plates 13 having different phase shifts from the corrugated plates 11 are wound in multiple layers, the corrugated plates 1 which are alternately positioned are
The ends of the corrugations 11a and 13a of 1 and 13 mesh with each other to prevent relative movement between the corrugated plates 11 and 13.
【００１９】従って、本実施形態に係る金属触媒担体９
によれば、フィルムアウト現象が生ずることがなくな
り、その結果、製造工程に於て、従来の如き溶接，ロー
付け，拡散接合等の接合が不要となって、コストの低廉
化が可能となる。Therefore, the metal catalyst carrier 9 according to the present embodiment
According to the method, the film-out phenomenon does not occur, and as a result, the conventional welding, brazing, diffusion bonding and the like are unnecessary in the manufacturing process, and the cost can be reduced.
【００２０】又、上記金属触媒担体９に触媒の担持処理
を施した後、これを触媒容器に収納して車両排気系に装
着することで排ガスの浄化が図られるが、本実施形態に
よれば、図７に示す金属触媒担体５に比し排ガスの通路
が複雑となり、排ガスは各波形１１ａ，１３ａの端部で
分岐し広く拡散して、触媒表面と接触し乍ら金属触媒担
体９を流下することとなる。Further, after the metal catalyst carrier 9 is loaded with a catalyst, it is housed in a catalyst container and mounted in a vehicle exhaust system to purify exhaust gas. According to this embodiment, As compared with the metal catalyst carrier 5 shown in FIG. 7, the exhaust gas passage becomes more complicated, and the exhaust gas branches at the ends of the corrugations 11a and 13a and spreads widely to flow down the metal catalyst carrier 9 while coming into contact with the catalyst surface. Will be done.
【００２１】従って、本実施形態に係る金属触媒担体９
によれば、図７に示す従来例に比し触媒との接触時間が
多くなるため、浄化効率の向上が図れると共に、排ガス
が金属触媒担体９内部で自由に且つ広く拡散できるた
め、流速分布による浄化性能の偏りが生じないといった
利点を有する。又、特開平５−１３８０４０号公報に開
示された金属触媒担体にあっては、巻回された波板相互
が重合してしまう箇所が多く生じるため、触媒効率上、
必ずしも好ましいものとはいえなかったが、本実施形態
によれば波板１１，１３相互が重合することもない。Therefore, the metal catalyst carrier 9 according to the present embodiment
According to this, since the contact time with the catalyst is longer than that in the conventional example shown in FIG. 7, the purification efficiency can be improved, and the exhaust gas can freely and widely diffuse inside the metal catalyst carrier 9, so that the flow rate distribution It has an advantage that the purification performance is not biased. Further, in the metal catalyst carrier disclosed in Japanese Patent Laid-Open No. 5-138040, there are many places where the wound corrugated sheets are polymerized with each other.
Although not necessarily preferable, according to the present embodiment, the corrugated plates 11 and 13 do not overlap with each other.
【００２２】加えて、本実施形態に係る金属触媒担体９
は従来の如き平板が不要となるため、従来に比し金属触
媒担体９全体の軽量化が可能となり、その結果、金属触
媒担体９が低熱容量となって昇温時間が短縮でき、エン
ジン始動後のエミッション低減に効果を有する。然も、
既述したように、波板は高温の排ガスによる熱応力を吸
収できるが、平板は熱応力を吸収し難いため、平板を用
いた金属触媒担体では波板と平板の接合箇所に応力歪み
が発生して破断や脱落を引き起こす虞があったが、本実
施形態では平板を使用しないため、熱応力の吸収に優れ
破断や脱落を引き起こす虞もない。In addition, the metal catalyst carrier 9 according to this embodiment
Does not require a flat plate as in the conventional case, the weight of the metal catalyst carrier 9 as a whole can be reduced as compared with the conventional case, and as a result, the metal catalyst carrier 9 has a low heat capacity and the temperature rising time can be shortened. Has the effect of reducing the emission of. Of course,
As described above, corrugated sheets can absorb thermal stress due to high-temperature exhaust gas, but flat sheets do not easily absorb thermal stress.Therefore, stress distortion occurs at the joint between corrugated sheet and flat sheet in a metal catalyst carrier that uses flat sheets. However, since the flat plate is not used in the present embodiment, the thermal stress is excellently absorbed, and there is no fear of causing breakage or loss.
【００２３】そして、本実施形態に係る金属触媒担体９
の製造方法によれば、上述の如き優れた効果を有する金
属触媒担体９を、波板１１，１３相互を接合することな
く製造できるので、従来に比しコストを抑えて作業性よ
く金属触媒担体９を製造することが可能となった。Then, the metal catalyst carrier 9 according to the present embodiment
According to the manufacturing method of 1, the metal catalyst carrier 9 having the above-mentioned excellent effects can be manufactured without bonding the corrugated plates 11 and 13 to each other. 9 can be manufactured.
【００２４】尚、上記実施形態では、波板１１，１３の
波形１１ａ，１３ａを同一形状としたが、相互の波形の
形状を代えてよいことは勿論である。In the above embodiment, the corrugations 11a and 13a of the corrugated plates 11 and 13 have the same shape, but it goes without saying that the corrugated shapes may be changed.
【００２５】[0025]
【発明の効果】以上述べたように、請求項１に係る触媒
コンバータの金属触媒担体によれば、巻回した波板相互
が重合することがなく、又、排ガスが広く拡散して触媒
表面と接触し乍ら金属触媒担体を流下するため、従来に
比し触媒との接触時間が多くなって浄化効率の向上が図
れると共に、排ガスが金属触媒担体内部で自由且つ広く
拡散できるため、流速分布による浄化性能の偏りが生じ
ないといった利点を有する。As described above, according to the metal catalyst carrier of the catalytic converter of claim 1, the wound corrugated plates do not polymerize with each other, and the exhaust gas widely diffuses to the catalyst surface. Since the metal catalyst carrier flows down after coming into contact with the catalyst, the contact time with the catalyst is longer than in the conventional case, so that the purification efficiency can be improved and the exhaust gas can diffuse freely and widely inside the metal catalyst carrier. It has an advantage that the purification performance is not biased.
【００２６】更に又、本発明によれば、従来の如き平板
が不要となるため、金属触媒担体全体の軽量化が可能と
なり、その結果、低熱容量となって昇温時間が短縮で
き、エンジン始動後のエミッション低減に効果を有する
と共に、熱応力の吸収に優れ破断や脱落を引き起こす虞
もない。そして、請求項２に係る製造方法によれば、上
述の如き優れた効果を有する金属触媒担体を、波板相互
を接合することなく製造することができるので、コスト
を抑えて作業性よく製造することが可能となった。Furthermore, according to the present invention, since a flat plate as in the prior art is not required, the weight of the metal catalyst carrier as a whole can be reduced, and as a result, the heat capacity can be reduced and the temperature rise time can be shortened to start the engine. It has the effect of reducing the emission later, and is excellent in absorbing thermal stress, and there is no fear of causing breakage or falling off. Further, according to the manufacturing method of the second aspect, the metal catalyst carrier having the above-mentioned excellent effects can be manufactured without joining the corrugated plates to each other, so that the cost can be suppressed and the workability can be improved. It has become possible.
【図１】請求項１に係る金属触媒担体の一実施形態の概
略斜視図である。FIG. 1 is a schematic perspective view of an embodiment of a metal catalyst carrier according to claim 1.
【図２】図１に示す金属触媒担体の要部拡大正面図であ
る。FIG. 2 is an enlarged front view of an essential part of the metal catalyst carrier shown in FIG.
【図３】波板の部分拡大斜視図である。FIG. 3 is a partially enlarged perspective view of a corrugated plate.
【図４】波板の部分拡大正面図である。FIG. 4 is a partially enlarged front view of a corrugated plate.
【図５】波板の部分拡大正面図である。FIG. 5 is a partially enlarged front view of a corrugated plate.
【図６】金属触媒担体の製造方法を示す概略図である。FIG. 6 is a schematic view showing a method for producing a metal catalyst carrier.
【図７】従来の金属触媒担体の製造方法を示す概略図で
ある。FIG. 7 is a schematic view showing a conventional method for producing a metal catalyst carrier.
９ 金属触媒担体 １１，１３ 波板 １１ａ，１３ａ 波形 ２１，２３ コルゲート加工ギヤ ２７ テンション付加ロール 9 metal catalyst carrier 11,13 corrugated plate 11a, 13a corrugated 21,23 corrugated gear 27 tensioning roll
Claims (2)
隣接する各列（１５）と位相をずらせて波形（１１ａ）
が所定ピッチで連続する薄肉な帯状の金属製の波板（１
１）と、 巻回方向へ区画した複数列に波形（１３ａ）が所定ピッ
チで連続し、隣接する各列の波形（１３ａ）の位相のず
れを上記波板（１１）と異にした薄肉な帯状の金属製の
波板（１３）を、 交互に重ねて多重に巻回してなることを特徴とする触媒
コンバータの金属触媒担体。1. A plurality of rows (15) divided in the winding direction,
Waveform (11a) with the phase shifted from each adjacent column (15)
Thin corrugated metal plates (1
1) and the waveform (13a) continues in a plurality of rows divided in the winding direction at a predetermined pitch, and the phase shift of the waveform (13a) in each adjacent row is different from that of the corrugated plate (11). A metal catalyst carrier for a catalytic converter, characterized in that a band-shaped metal corrugated plate (13) is alternately laminated and wound in multiple layers.
隣接する各列（１５）と位相をずらせて波形（１１ａ）
が所定ピッチで連続する薄肉な帯状の金属製の波板（１
１）と、 巻回方向へ区画した複数列に波形（１３ａ）が所定ピッ
チで連続し、隣接する各列の波形（１３ａ）の位相のず
れを上記波板（１１）と異にした薄肉な帯状の金属製の
波板（１３）とを形成し、 これらを交互に重ね乍ら、多重に巻回していくことを特
徴とする触媒コンバータの金属触媒担体の製造方法。2. A plurality of rows (15) divided in the winding direction,
Waveform (11a) with the phase shifted from each adjacent column (15)
Thin corrugated metal plates (1
1) and a plurality of rows partitioned in the winding direction, the waveform (13a) is continuous at a predetermined pitch, and the phase shift of the waveform (13a) of each adjacent row is different from that of the corrugated plate (11). A method for producing a metal catalyst carrier for a catalytic converter, comprising forming a strip-shaped metal corrugated plate (13), alternately stacking these and winding them in multiple layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8013052A JPH09201537A (en) | 1996-01-29 | 1996-01-29 | Metal catalyst carrier in catalytic converter and its preparation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8013052A JPH09201537A (en) | 1996-01-29 | 1996-01-29 | Metal catalyst carrier in catalytic converter and its preparation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09201537A true JPH09201537A (en) | 1997-08-05 |
Family
ID=11822367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8013052A Pending JPH09201537A (en) | 1996-01-29 | 1996-01-29 | Metal catalyst carrier in catalytic converter and its preparation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09201537A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001015877A1 (en) * | 1999-08-30 | 2001-03-08 | Ngk Insulators, Ltd. | Corrugated wall honeycomb structure and production method thereof |
| JP2008264596A (en) * | 2007-04-16 | 2008-11-06 | Showa Aircraft Ind Co Ltd | Catalyst carrier for cleaning exhaust gas |
| JP6340101B1 (en) * | 2017-02-28 | 2018-06-06 | 新日鉄住金マテリアルズ株式会社 | Catalyst support substrate and catalyst support |
-
1996
- 1996-01-29 JP JP8013052A patent/JPH09201537A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001015877A1 (en) * | 1999-08-30 | 2001-03-08 | Ngk Insulators, Ltd. | Corrugated wall honeycomb structure and production method thereof |
| US7655195B1 (en) | 1999-08-30 | 2010-02-02 | Ngk Insulators, Ltd. | Undulated-wall honeycomb structure and manufacturing method thereof |
| JP2008264596A (en) * | 2007-04-16 | 2008-11-06 | Showa Aircraft Ind Co Ltd | Catalyst carrier for cleaning exhaust gas |
| JP6340101B1 (en) * | 2017-02-28 | 2018-06-06 | 新日鉄住金マテリアルズ株式会社 | Catalyst support substrate and catalyst support |
| WO2018159007A1 (en) * | 2017-02-28 | 2018-09-07 | 新日鉄住金マテリアルズ株式会社 | Base for supporting catalyst and catalyst support |
| US10378412B2 (en) | 2017-02-28 | 2019-08-13 | Nippon Steel Chemical & Material Co., Ltd. | Metal substrate for catalytic converter and catalyst carrier |
| TWI742197B (en) * | 2017-02-28 | 2021-10-11 | 日商日鐵化學材料股份有限公司 | Base material and catalyst carrier for supporting catalyst |
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