JPH04222636A - Metal carrier for exhaust gas purifying catalyst - Google Patents
Metal carrier for exhaust gas purifying catalystInfo
- Publication number
- JPH04222636A JPH04222636A JP2406516A JP40651690A JPH04222636A JP H04222636 A JPH04222636 A JP H04222636A JP 2406516 A JP2406516 A JP 2406516A JP 40651690 A JP40651690 A JP 40651690A JP H04222636 A JPH04222636 A JP H04222636A
- Authority
- JP
- Japan
- Prior art keywords
- honeycomb body
- cylinder
- outer cylinder
- intermediate cylinder
- metal carrier
- 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
- 239000002184 metal Substances 0.000 title claims description 27
- 239000003054 catalyst Substances 0.000 title claims description 11
- 238000000746 purification Methods 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 4
- 230000008646 thermal stress Effects 0.000 abstract description 20
- 230000008602 contraction Effects 0.000 abstract description 11
- 238000005476 soldering Methods 0.000 abstract 1
- 238000005219 brazing Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 229910019589 Cr—Fe Inorganic materials 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、内燃機関の排気ガス浄
化触媒に用いられるメタル担体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal carrier used in an exhaust gas purification catalyst for an internal combustion engine.
【０００２】0002
【従来の技術】排気ガス浄化触媒のメタル担体として、
平板と波板とを重ねてロール状に巻いてハニカム体を形
成し、そのハニカム体を金属製外筒に収納したものが知
られている。このメタル担体ではハニカム体の平板と波
板、および外筒とハニカム担体とは通常ろう付けによっ
て一体的に接合されている。このメタル担体のハニカム
体のハニカム通路表面にはアルミナなどからなる触媒担
持層が形成され、その触媒担持層に金属触媒が担持され
て排気ガスの浄化触媒とされる。そして内燃機関の排気
通路に設置されて、排気ガスに含まれるＨＣ，ＣＯ，Ｎ
ＯＸ を浄化する。なお、限られた体積中にできるだけ
多くのハニカム通路の面積を確保するのが好ましいこと
から、平板および波板の厚さは強度を維持できる範囲で
できるだけ薄くされている。[Prior art] As a metal carrier for exhaust gas purification catalyst,
It is known that a honeycomb body is formed by stacking a flat plate and a corrugated plate and winding them into a roll, and that the honeycomb body is housed in a metal outer cylinder. In this metal carrier, the flat plate and the corrugated plate of the honeycomb body, and the outer cylinder and the honeycomb carrier are usually integrally joined by brazing. A catalyst support layer made of alumina or the like is formed on the honeycomb passage surface of the honeycomb body of the metal carrier, and a metal catalyst is supported on the catalyst support layer to serve as an exhaust gas purification catalyst. It is installed in the exhaust passage of an internal combustion engine to prevent HC, CO, and N contained in the exhaust gas.
Purify OX. Note that since it is preferable to secure as much area as possible for the honeycomb passages in a limited volume, the thicknesses of the flat plate and the corrugated plate are made as thin as possible within a range that maintains strength.
【０００３】ところで、ハニカム体を通過する排気ガス
は、ハニカム体の外周部に比べて中心部ほど流速が大き
い。したがって、メタル担体では、高温の排気ガスとの
接触、触媒反応による発熱、および外筒からの外気への
熱放出により、中心部ほど高温で外周部ほど低温となる
温度分布が生じる。この温度分布によりハニカム体と外
筒との膨張および収縮量に差が生じるがハニカム体の径
方向および軸方向の膨張および収縮の動きは外筒で規制
されていること、またハニカム体を構成する平板と波板
の板厚は一般に外筒の板厚よりもかなり小さいことから
、ハニカム体に熱応力が作用する。そして膨張・収縮の
繰り返しによりハニカム体の外周部近傍の平板および波
板が塑性変形して金属疲労が生じ、最終的にはハニカム
体の平板および波板に破断が生じる場合があった。[0003] Incidentally, the flow velocity of exhaust gas passing through a honeycomb body is greater at the center than at the outer periphery of the honeycomb body. Therefore, in the metal carrier, due to contact with high-temperature exhaust gas, heat generation due to catalytic reaction, and heat release from the outer cylinder to the outside air, a temperature distribution occurs in which the temperature is higher at the center and lower at the outer periphery. This temperature distribution causes a difference in the amount of expansion and contraction between the honeycomb body and the outer cylinder, but it is important to note that the expansion and contraction movements of the honeycomb body in the radial and axial directions are regulated by the outer cylinder. Since the plate thicknesses of the flat plate and the corrugated plate are generally much smaller than the plate thickness of the outer cylinder, thermal stress acts on the honeycomb body. Repeated expansion and contraction causes plastic deformation of the flat plates and corrugated plates near the outer periphery of the honeycomb body, resulting in metal fatigue, and eventually the flat plates and corrugated plates of the honeycomb body may break.
【０００４】0004
【発明が解決しようとする課題】上記したような不具合
を回避するために、実開昭６２−１９４４３６号公報に
は、ハニカム体の一端部のみを外筒と接合し他端部は接
合しない自由端としたメタル担体が開示されている。こ
のメタル担体によればハニカム体の軸方向の膨張・収縮
は殆ど規制されないが、接合されている一端部では肝心
な径方向の膨張・収縮は従来と同様に外筒で規制されて
いるため、その部分で平板および波板に破断が起きる恐
れがある。[Problems to be Solved by the Invention] In order to avoid the above-mentioned problems, Japanese Utility Model Application Publication No. 62-194436 discloses a method that allows only one end of the honeycomb body to be joined to the outer cylinder and the other end not to be joined. An edge metal carrier is disclosed. According to this metal carrier, the axial expansion and contraction of the honeycomb body is hardly regulated, but at the one end where it is joined, the important radial expansion and contraction is regulated by the outer cylinder as in the conventional case. There is a risk that the flat plate and corrugated plate will break at that point.
【０００５】また、実開昭６３−７７６３４号公報には
、ハニカム体の平板の厚さを波板より厚くしたメタル担
体が開示されている。このメタル担体では平板により剛
性が確保されているので膨張・収縮の量が小さくなり、
波板に全体に略均一に変形するので、局部的な変形によ
る破断が防止される。しかしながら平板を厚くすること
により排気通路内における平板の抵抗が大きくなり、排
気性能、圧力損失に対して不利となる。[0005] Furthermore, Japanese Utility Model Application Publication No. 63-77634 discloses a metal carrier in which the thickness of the flat plate of the honeycomb body is thicker than that of the corrugated plate. In this metal carrier, rigidity is ensured by the flat plate, so the amount of expansion and contraction is small.
Since the corrugated plate deforms substantially uniformly throughout, breakage due to local deformation is prevented. However, by increasing the thickness of the flat plate, the resistance of the flat plate in the exhaust passage increases, which is disadvantageous in terms of exhaust performance and pressure loss.
【０００６】これらの問題を解消するために本出願人は
、先にスリットを設け撓み部を形成した中間筒をハニカ
ム体と外筒に結合することにより、熱応力を緩和して破
断を防止したメタル担体を出願した（特願平１−２９８
１６５号、実願平２−８４８９３号）。本願発明は上記
の先願の改良に関するもので、上記のメタル担体が高温
にさらされるというさらに厳しい使用条件においても熱
応力によるハニカム体の破断をより確実に防止すること
を目的とする。[0006] In order to solve these problems, the present applicant has combined an intermediate cylinder, in which a slit has been previously provided and a flexible portion is formed, to the honeycomb body and the outer cylinder, thereby alleviating thermal stress and preventing breakage. Filed an application for metal carrier (patent application No. 1-298)
No. 165, Utility Application No. 2-84893). The present invention relates to an improvement on the prior application, and aims to more reliably prevent the honeycomb body from breaking due to thermal stress even under severe usage conditions in which the metal carrier is exposed to high temperatures.
【０００７】[0007]
【課題を解決するための手段】本発明の排気ガス浄化触
媒用メタル担体は、平板と波板とを重ねてロール状に巻
いて形成されたハニカム体と、ハニカム体の外周に同軸
的に配置された外筒と、該ハニカム体と該外筒との間に
介在する中間筒とよりなり、該中間筒は波形形状の板で
形成され該波形の波頂部でハニカム体および外筒に接触
しその面の一部で接合されていることを特徴とする。[Means for Solving the Problems] The metal carrier for an exhaust gas purification catalyst of the present invention includes a honeycomb body formed by stacking a flat plate and a corrugated plate and winding them into a roll, and disposing coaxially around the outer periphery of the honeycomb body. and an intermediate cylinder interposed between the honeycomb body and the outer cylinder, the intermediate cylinder being formed of a corrugated plate and contacting the honeycomb body and the external cylinder at the crests of the corrugations. It is characterized by being joined at a part of its surface.
【０００８】ハニカム体は、平板と波板とを重ねた状態
でロール状に巻いて形成されている。波板は、通常平板
を波形状に曲折して形成され、通常平板と同材質で同一
板厚を有している。この平板および波板は、従来と同様
にたとえばＡｌ−Ｃｒ−Ｆｅ合金、ステンレス鋼などか
ら形成される。そして上記したように限られた体積中に
できるだけ多くのハニカム通路の面積を確保することが
好ましいことから、板厚はたとえば、０．０５ｍｍなど
比較的薄いものが用いられる。このハニカム体は、たと
えば波板の頂部にろう材が塗布された状態で平板と重ね
てロール状に巻き上げられて形成され、その後加熱され
る。これにより平板と波板とはろう付けされて一体的に
接合される。また、拡散接合により一体化することもで
きる。[0008] A honeycomb body is formed by stacking a flat plate and a corrugated plate and winding them into a roll shape. A corrugated plate is usually formed by bending a flat plate into a wave shape, and is made of the same material and has the same thickness as the flat plate. The flat plate and the corrugated plate are made of Al--Cr--Fe alloy, stainless steel, etc., as in the past. As described above, since it is preferable to secure as much area as possible for the honeycomb passages in a limited volume, a relatively thin plate having a thickness of, for example, 0.05 mm is used. This honeycomb body is formed by, for example, applying a brazing material to the top of a corrugated plate, stacking it on a flat plate and rolling it up into a roll, and then heating the corrugated plate. As a result, the flat plate and the corrugated plate are brazed and integrally joined. Alternatively, they can be integrated by diffusion bonding.
【０００９】外筒は、たとえばフェライト系ステンレス
鋼など従来と同様のものを用いることができ、その板厚
は従来と同様、通常１〜２ｍｍ程度である。本発明の最
大の特徴は、外筒とハニカム体の間に介在する中間筒に
ある。この中間筒はたとえば、ステンレス鋼材で板厚が
通常０．１〜０．５ｍｍのものを波形形状に成形した後
、円筒状に形成されたものである。この波形状は、この
部分にも触媒を担持することを考えればハニカム体の波
形状に対して波高さ０．５〜３倍、ピッチ０．５〜３倍
程度が好ましい。[0009] The outer cylinder can be made of the same materials as conventional ones, such as ferritic stainless steel, and its plate thickness is usually about 1 to 2 mm, as in the conventional case. The greatest feature of the present invention lies in the intermediate cylinder interposed between the outer cylinder and the honeycomb body. This intermediate cylinder is, for example, formed into a cylindrical shape after forming a stainless steel material having a plate thickness of usually 0.1 to 0.5 mm into a corrugated shape. This wave shape is preferably about 0.5 to 3 times the wave height and 0.5 to 3 times the pitch of the wave shape of the honeycomb body, considering that the catalyst is also supported in this portion.
【００１０】中間筒は、軸に垂直な平面で切断した同一
横断面上において外筒、ハニカム体とが一体的に接合さ
れることはなく、軸方向でそれぞれ異なる位置で接合さ
れている。これによりハニカム体の径方向および軸方向
の膨張・収縮の動きが外筒で規制され、熱応力の発生が
防止されるのでハニカム体の破断が確実に防止できる。[0010] In the intermediate cylinder, the outer cylinder and the honeycomb body are not integrally joined on the same cross section cut along a plane perpendicular to the axis, but are joined at different positions in the axial direction. As a result, expansion and contraction movements of the honeycomb body in the radial and axial directions are regulated by the outer cylinder, and generation of thermal stress is prevented, so that breakage of the honeycomb body can be reliably prevented.
【００１１】中間筒にスリットを設け撓み部を形成して
ハニカム体と外筒に結合した場合には、高温に曝される
というさらに厳しい使用条件となると、スリットを設け
た撓み部からハニカム体の破損が起きる。これはスリッ
トを設け撓み部を形成した中間筒とハニカム体の接合部
を詳細にみれば、ハニカム箔と中間筒の温度差、剛性の
違いあるいは膨張係数の違いなどにより熱応力が発生す
る。この熱応力が小さい時はハニカム体の変形で緩和さ
れるが、高温となり熱応力が変形で緩和できなくなると
ハニカム体は破断ないしは破損する。スリットでこれを
回避するにはスリットの数を増して一箇所当たりの変形
量を小さくすることが考えられるが、その場合には軸方
向の強度の低下が大きくなり中間筒の破断が発生するの
で好ましくない。[0011] When the honeycomb body and the outer cylinder are connected by providing a slit in the intermediate cylinder to form a flexible part, if the use conditions are more severe such as exposure to high temperatures, the honeycomb body can be removed from the flexible part provided with the slit. Damage occurs. If we look in detail at the joint between the honeycomb body and the intermediate tube, which has slits and bends, thermal stress is generated due to the difference in temperature, rigidity, or expansion coefficient between the honeycomb foil and the intermediate tube. When this thermal stress is small, it is relieved by the deformation of the honeycomb body, but when the temperature reaches a high temperature and the thermal stress cannot be relieved by deformation, the honeycomb body breaks or breaks. To avoid this with slits, it is possible to increase the number of slits and reduce the amount of deformation per point, but in that case, the strength in the axial direction will decrease significantly and breakage of the intermediate cylinder will occur. Undesirable.
【００１２】そこで中間筒全体を波形形状にして熱応力
による変形を波形状の変形で分散緩和してハニカム体の
破断を防止することができる。そして中間筒の波頂部で
ハニカム体および外筒とに結合させる。これにより中間
筒のスリットを多くした場合と同様に変形を分散できる
効果がある。さらにこの中間筒は波形状で連続した断面
形状となるので断面積を広くとることができ軸方向の強
度を確保することができる。そしてハニカム体と外筒と
は軸方向に同一位置で接合されていないので軸方向、径
方向への動きを自由にして熱応力による破断を防ぐこと
ができる。[0012] Therefore, by forming the entire intermediate cylinder into a wave shape, deformation caused by thermal stress can be dispersed and alleviated by the wave shape deformation, thereby preventing breakage of the honeycomb body. Then, the crest of the intermediate cylinder is connected to the honeycomb body and the outer cylinder. This has the effect of dispersing deformation in the same way as when increasing the number of slits in the intermediate cylinder. Further, since this intermediate cylinder has a continuous wave-shaped cross-sectional shape, it can have a large cross-sectional area and ensure strength in the axial direction. Since the honeycomb body and the outer cylinder are not joined at the same position in the axial direction, they can freely move in the axial direction and the radial direction, thereby preventing breakage due to thermal stress.
【００１３】[0013]
【作用】本発明のメタル担体は、中間筒を波形形状とし
ハニカム体には内側の波頂部で接合され、外筒とは外側
の波頂部で結合されている。このため、ハニカム体が熱
により膨張したさいは中間筒の波形状の変形してこれを
吸収し、冷却による収縮は中間筒の波形状が剛性を利用
して元の形状に戻ることができる。このため板厚の薄い
ハニカム体が熱応力により破断するのが防止できる。[Operation] In the metal carrier of the present invention, the intermediate cylinder has a corrugated shape and is joined to the honeycomb body at the inner wave crest, and is connected to the outer cylinder at the outer wave crest. Therefore, when the honeycomb body expands due to heat, the wavy shape of the intermediate tube deforms to absorb this expansion, and when it contracts due to cooling, the wavy shape of the intermediate tube can return to its original shape using its rigidity. Therefore, it is possible to prevent the thin honeycomb body from breaking due to thermal stress.
【００１４】ハニカム体と外筒とは同一横断面で中間筒
を介しても接合されていないので、ハニカム体の軸方向
の膨張・収縮の動きは、外筒より剛性の低い中間筒の軸
方向の変形により吸収される。すなわち、このメタル担
体によれば、ハニカム体と外筒とは直接接合されておら
ず、ハニカム体は軸方向および径方向に自由に膨張・収
縮できるので、熱応力が発生するのが確実に防止され、
ハニカム体の破断が防止されるため耐久性が著しく向上
する。[0014] Since the honeycomb body and the outer cylinder have the same cross section and are not joined through the intermediate cylinder, the axial expansion and contraction movement of the honeycomb body is caused by the axial direction of the intermediate cylinder, which has lower rigidity than the outer cylinder. It is absorbed by the deformation of. In other words, according to this metal carrier, the honeycomb body and the outer cylinder are not directly joined, and the honeycomb body can freely expand and contract in the axial and radial directions, thereby reliably preventing thermal stress from occurring. is,
Since the honeycomb body is prevented from breaking, durability is significantly improved.
【００１５】[0015]
【実施例】以下、実施例により具体的に説明する。図１
および図２に本発明の一実施例の排気ガス浄化触媒用メ
タル担体の構成斜視図と部分断面図を示す。このメタル
担体は、ハニカム体１と、外筒２と、中間筒３とより構
成される。[Examples] Hereinafter, the present invention will be explained in detail using examples. Figure 1
FIG. 2 shows a structural perspective view and a partial sectional view of a metal carrier for an exhaust gas purification catalyst according to an embodiment of the present invention. This metal carrier is composed of a honeycomb body 1, an outer cylinder 2, and an intermediate cylinder 3.
【００１６】ハニカム体１は、板厚０．０５ｍｍのＡｌ
−Ｃｒ−Ｆｅ合金製平板１０と、この平板１０を波状に
曲折して形成した波板１１とから構成されている。そし
て平板１０と波板１１とを重ね、平板１０を表側にして
ロール状に巻いて形成されている。なお、波板１１に頂
部と平板１０との間にはろう材が介在し、平板１０と波
板１１とはろう付けにより一体的に接合されている。The honeycomb body 1 is made of Al having a thickness of 0.05 mm.
It is composed of a -Cr-Fe alloy flat plate 10 and a corrugated plate 11 formed by bending this flat plate 10 into a wave shape. The flat plate 10 and the corrugated plate 11 are stacked on top of each other and rolled into a roll with the flat plate 10 facing up. Note that a brazing material is interposed between the top of the corrugated plate 11 and the flat plate 10, and the flat plate 10 and the corrugated plate 11 are integrally joined by brazing.
【００１７】外筒２はステンレス鋼から形成され、板厚
１．５ｍｍの円筒状をなしている。中間筒３は、板厚０
．１ｍｍのステンレス鋼を波高さを波板１１の１倍、ピ
ッチを波板１１の１．５倍に成形して円筒状に形成した
ものである。この中間筒３の内側の波頂の一端部３１が
ハニカム体１に、外側の波頂の他端部３２が外筒２にろ
う付け部４により接合されている。The outer cylinder 2 is made of stainless steel and has a cylindrical shape with a plate thickness of 1.5 mm. The intermediate cylinder 3 has a plate thickness of 0.
．． It is formed into a cylindrical shape by molding 1 mm stainless steel so that the wave height is 1 times that of the corrugated sheet 11 and the pitch is 1.5 times that of the corrugated sheet 11. One end 31 of the inner wave crest of this intermediate cylinder 3 is joined to the honeycomb body 1, and the other end 32 of the outer wave crest is joined to the outer cylinder 2 by a brazing part 4.
【００１８】このように構成されたメタル担体は、熱に
よりハニカム体１が径方向に膨張すると、中間筒３の波
形状が変形してその拡径の動きは妨げない。また、ハニ
カム体１と外筒２および中間筒３は、同一横断面におい
てはろう付け部４により接合されていない。したがって
、ハニカム体１の軸方向の膨張・収縮の動きは外筒２お
よびハニカム体１に接合されていない部分の中間筒３で
吸収され、ハニカム体１に熱応力が作用するのが防止さ
れる。したがって、高温下においても熱応力の発生が抑
制され、ハニカム体１の破断が防止できる。
（実施例２）
本実施例では中間筒３の外筒２とハニカム体１との接合
位置を変更した以外は実施例１と同じである。図３の側
断面に示すように外筒２と中間筒３との接合を中央部３
３でおこない中間筒３とハニカム体１との接合を両端部
４でおこなった構成である。このように構成されたメタ
ル担体は、実施例１と同様に熱によりハニカム体１が径
方向に膨張すると、中間筒３の波形状が変形してその拡
径の動きは妨げない。また、ハニカム体１と外筒２およ
び中間筒３は、同一横断面においてはろう付け部４で接
合されていない。したがって、ハニカム体１の軸方向の
膨張・収縮の動きは外筒２およびハニカム体１に接合さ
れていない部分の中間筒３で吸収され、ハニカム体１に
熱応力が作用するのが防止される。したがって、この場
合も高温下においても熱応力の発生が抑制され、ハニカ
ム体１の破断が防止できる。In the metal carrier constructed in this way, when the honeycomb body 1 expands in the radial direction due to heat, the wave shape of the intermediate tube 3 is deformed, and its diameter expansion movement is not hindered. Further, the honeycomb body 1, the outer cylinder 2, and the intermediate cylinder 3 are not joined by the brazing portion 4 in the same cross section. Therefore, the movement of expansion and contraction in the axial direction of the honeycomb body 1 is absorbed by the outer cylinder 2 and the intermediate cylinder 3 that is not joined to the honeycomb body 1, and thermal stress is prevented from acting on the honeycomb body 1. . Therefore, generation of thermal stress is suppressed even under high temperatures, and breakage of the honeycomb body 1 can be prevented. (Example 2) This example is the same as Example 1 except that the joining position between the outer cylinder 2 of the intermediate cylinder 3 and the honeycomb body 1 was changed. As shown in the side cross section of FIG.
3, and the intermediate cylinder 3 and the honeycomb body 1 are joined at both ends 4. In the metal carrier configured in this manner, when the honeycomb body 1 expands in the radial direction due to heat, the wave shape of the intermediate cylinder 3 is deformed and the movement of the diameter expansion is not hindered, as in the first embodiment. Moreover, the honeycomb body 1, the outer cylinder 2, and the intermediate cylinder 3 are not joined by the brazing part 4 in the same cross section. Therefore, the movement of expansion and contraction in the axial direction of the honeycomb body 1 is absorbed by the outer cylinder 2 and the intermediate cylinder 3 that is not joined to the honeycomb body 1, and thermal stress is prevented from acting on the honeycomb body 1. . Therefore, in this case as well, generation of thermal stress is suppressed even at high temperatures, and breakage of the honeycomb body 1 can be prevented.
【００１９】[0019]
【発明の効果】本発明ではハニカム体と外筒との間に波
形形状の中間筒を介在させて、中間筒の波頂部で接触す
るハニカム体および外筒と接合されたメタル担体である
。このため高温時にハニカム体に加わる熱応力は波形形
状の中間筒の変形・回復により緩和されて外筒に一定の
強度で保持することができる。たとえば、熱によりハニ
カム体が膨張すると中間筒の波形が広がり拡径する。
また冷却時にハニカム体が収縮すると中間筒の剛性によ
り波形がもとにもどり、縮径してハニカム体をがたのな
いように保持する。したがって、ハニカム体が熱応力に
より破断することがなく厳しい条件にさらされても耐久
性に優れている。According to the present invention, a corrugated intermediate tube is interposed between the honeycomb body and the outer tube, and the metal carrier is joined to the honeycomb body and the outer tube, which come into contact with each other at the crests of the waves of the intermediate tube. Therefore, the thermal stress applied to the honeycomb body at high temperatures is alleviated by the deformation and recovery of the corrugated intermediate cylinder, and the honeycomb body can be held at a constant strength in the outer cylinder. For example, when the honeycomb body expands due to heat, the waveform of the intermediate cylinder expands and its diameter increases. Further, when the honeycomb body contracts during cooling, the waveform returns to its original shape due to the rigidity of the intermediate cylinder, and the diameter is reduced to hold the honeycomb body without rattling. Therefore, the honeycomb body does not break due to thermal stress and has excellent durability even when exposed to severe conditions.
【図１】実施例のメタル担体の構成を説明する斜視図。FIG. 1 is a perspective view illustrating the structure of a metal carrier of an example.
【図２】実施例１のメタル担体の構成を説明する部分側
面図。FIG. 2 is a partial side view illustrating the structure of the metal carrier of Example 1.
【図３】実施例２のメタル担体の構成を説明する部分側
面図。FIG. 3 is a partial side view illustrating the structure of a metal carrier of Example 2.
１：ハニカム体、 ２：外筒、 ３：中間筒、
４：ろう付け部、１０：平板、 １１：
波板、 ３１：一端部、 ３２：他端部、1: Honeycomb body, 2: Outer cylinder, 3: Intermediate cylinder,
4: Brazing part, 10: Flat plate, 11:
Corrugated plate, 31: one end, 32: other end,
Claims (1)
て形成されたハニカム体と、ハニカム体の外周に同軸的
に配置された外筒と、該ハニカム体と該外筒との間に介
在する中間筒とよりなり、該中間筒は波形形状の板で形
成され該波形の波頂部でハニカム体および外筒に接触し
その面の一部で接合されていることを特徴とする排気ガ
ス浄化触媒用メタル担体。Claim 1: A honeycomb body formed by stacking a flat plate and a corrugated plate and winding them into a roll, an outer cylinder coaxially arranged around the outer periphery of the honeycomb body, and a space between the honeycomb body and the outer cylinder. and an intermediate cylinder interposed in the exhaust cylinder, and the intermediate cylinder is formed of a corrugated plate, and the crest of the corrugation contacts the honeycomb body and the outer cylinder, and is joined to the honeycomb body and the outer cylinder at a part of the surface. Metal carrier for gas purification catalyst.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2406516A JP2832397B2 (en) | 1990-12-26 | 1990-12-26 | Metal carrier for exhaust gas purification catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2406516A JP2832397B2 (en) | 1990-12-26 | 1990-12-26 | Metal carrier for exhaust gas purification catalyst |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04222636A true JPH04222636A (en) | 1992-08-12 |
| JP2832397B2 JP2832397B2 (en) | 1998-12-09 |
Family
ID=18516145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2406516A Expired - Fee Related JP2832397B2 (en) | 1990-12-26 | 1990-12-26 | Metal carrier for exhaust gas purification catalyst |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2832397B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0999218A (en) * | 1995-10-04 | 1997-04-15 | Nippon Steel Corp | Diffusion-joined metallic carrier for catalyst having high bonding strength and its production |
| WO2002023020A1 (en) * | 2000-09-13 | 2002-03-21 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Honeycomb body having a segmented sheathing tube |
| JP2002517670A (en) * | 1998-06-05 | 2002-06-18 | エミテック ゲゼルシヤフト フユア エミツシオンス テクノロギー ミツト ベシユレンクテル ハフツング | Honeycomb body device |
| WO2003087548A1 (en) | 2002-04-18 | 2003-10-23 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Catalyst support body with corrugated sleeve and method for production thereof |
| WO2003087549A1 (en) * | 2002-04-18 | 2003-10-23 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Calibrated catalyst carrier element comprising a corrugated sheath and method for the production thereof |
| US7404254B2 (en) | 2002-04-18 | 2008-07-29 | Emitec Gesellschaft Fuer Emissions Technologie Mbh | Calibrated catalyst carrier body with corrugated casing and method for manufacturing the same |
| US7476366B2 (en) | 2002-04-18 | 2009-01-13 | Emitec Gesellschaft Fuer Emissionstechnologie Mbh | Catalyst carrier body with corrugated casing and process for producing the same |
| JP2014166603A (en) * | 2013-02-28 | 2014-09-11 | Ihi Corp | Reactor |
-
1990
- 1990-12-26 JP JP2406516A patent/JP2832397B2/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0999218A (en) * | 1995-10-04 | 1997-04-15 | Nippon Steel Corp | Diffusion-joined metallic carrier for catalyst having high bonding strength and its production |
| JP2002517670A (en) * | 1998-06-05 | 2002-06-18 | エミテック ゲゼルシヤフト フユア エミツシオンス テクノロギー ミツト ベシユレンクテル ハフツング | Honeycomb body device |
| 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 |
| DE10217259A1 (en) * | 2002-04-18 | 2003-11-13 | Emitec Emissionstechnologie | Catalyst carrier body with corrugated jacket and process for its production |
| WO2003087549A1 (en) * | 2002-04-18 | 2003-10-23 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Calibrated catalyst carrier element comprising a corrugated sheath and method for the production thereof |
| WO2003087548A1 (en) | 2002-04-18 | 2003-10-23 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Catalyst support body with corrugated sleeve and method for production thereof |
| CN100347420C (en) * | 2002-04-18 | 2007-11-07 | 排放技术有限公司 | Catalyst support body with corrugated sleeve and method for production thereof |
| CN100356043C (en) * | 2002-04-18 | 2007-12-19 | 排放技术有限公司 | Calibrated catalyst carrier body with corrugated casing and method for manufacturing the same |
| US7404254B2 (en) | 2002-04-18 | 2008-07-29 | Emitec Gesellschaft Fuer Emissions Technologie Mbh | Calibrated catalyst carrier body with corrugated casing and method for manufacturing the same |
| US7476366B2 (en) | 2002-04-18 | 2009-01-13 | Emitec Gesellschaft Fuer Emissionstechnologie Mbh | Catalyst carrier body with corrugated casing and process for producing the same |
| KR100913877B1 (en) * | 2002-04-18 | 2009-08-26 | 에미텍 게젤샤프트 퓌어 에미시온스테크놀로기 엠베하 | Calibrated catalyst carrier element comprising a corrugated sheath and method for the production thereof |
| US7943096B2 (en) | 2002-04-18 | 2011-05-17 | Emitec Gesellschaft Fuer Emissionstechnologie Mbh | Calibrated catalyst carrier body with corrugated casing |
| JP2014166603A (en) * | 2013-02-28 | 2014-09-11 | Ihi Corp | Reactor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2832397B2 (en) | 1998-12-09 |
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