JPS63315150A - Catalyst carrier for exhaust gas of car - Google Patents
Catalyst carrier for exhaust gas of carInfo
- Publication number
- JPS63315150A JPS63315150A JP62152150A JP15215087A JPS63315150A JP S63315150 A JPS63315150 A JP S63315150A JP 62152150 A JP62152150 A JP 62152150A JP 15215087 A JP15215087 A JP 15215087A JP S63315150 A JPS63315150 A JP S63315150A
- Authority
- JP
- Japan
- Prior art keywords
- metal
- brazing
- pipes
- pipe
- casing
- 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 19
- 239000002184 metal Substances 0.000 claims abstract description 29
- 238000005260 corrosion Methods 0.000 claims abstract description 5
- 230000007797 corrosion Effects 0.000 claims abstract description 5
- 238000005219 brazing Methods 0.000 abstract description 7
- 238000003466 welding Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 3
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 2
- 239000010935 stainless steel Substances 0.000 abstract description 2
- 238000011144 upstream manufacturing Methods 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 241000264877 Hippospongia communis Species 0.000 description 10
- 230000000694 effects Effects 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
- F01N3/2807—Metal other than sintered metal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
- F01N3/2842—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration specially adapted for monolithic supports, e.g. of honeycomb type
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Catalysts (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、自動車のエンジンから排出される排ガスを浄
化するための触媒装置に用いる触媒担体であって、薄金
属材により構成するメタルハニカムの改良に関する。Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a catalyst carrier for use in a catalyst device for purifying exhaust gas emitted from an automobile engine, which is a catalyst carrier made of a metal honeycomb made of a thin metal material. Regarding improvements.
（従来の技術）
従来メタルハニカムとしては、例えば特開昭５４−２５
３２１、同５５−１４５５３７等に示されるように薄い
波形と平面状の金属シートを重ね、これを渦巻き状に巻
いた波板式のものが一般である。また多数の細管を溶接
により一体とした細管式のものは、特開昭５２−２４８
１．６により知られている。(Prior art) As a conventional metal honeycomb, for example, Japanese Patent Application Laid-Open No. 54-25
As shown in No. 321, No. 55-145537, etc., a corrugated sheet type is generally used, in which thin corrugated and flat metal sheets are layered and wound in a spiral shape. In addition, a thin tube type in which many thin tubes are integrated by welding is disclosed in Japanese Patent Application Laid-Open No. 52-248.
1.6.
このようなメタルハニカムは、熱伝導が良好でエンジン
始動直後から触媒作用を奏することができ、機械的強度
が大で破損しに＜＜、ケーシング材と同一熱膨張率であ
、るためケーシング内での保持が容易である、等の利点
をもっている。This type of metal honeycomb has good heat conduction and can perform a catalytic action immediately after the engine starts, has high mechanical strength and is resistant to breakage, and has the same coefficient of thermal expansion as the casing material, so it can be used inside the casing. It has the advantage of being easy to hold.
（発明が解決しようとする問題点）
メタルハニカムは、前記の利点をもつがなお改良すべき
難点もある。例えば、前記の波板式のものにおいては、
渦巻きの巻き始めの位置すなわち渦巻きの中心部におい
て、巻き芯を用いたあとに空洞が形成され、ここを通る
ガスは触媒による処理を受けることができない。また触
媒を付着させる際に、波板と平板の結合部の狭い空間又
は波板の曲率半径の小さい部分に触媒の溜まりができ、
平坦部には薄く付着する傾向があり触媒の有効利用がで
きなかった。更に、前記の細管式のものにおいては、各
細管を溶接により一体にすることにしているので、この
細管は溶接可能の寸法であることを要し、このような寸
法の細管であれば内径も大きいため、細管内面の触媒と
流通するガスの接触が不十分になるおそれがある。(Problems to be Solved by the Invention) Although metal honeycombs have the above-mentioned advantages, there are still disadvantages that should be improved. For example, in the corrugated plate type mentioned above,
At the beginning of the spiral, that is, at the center of the spiral, a cavity is formed after the winding core is used, and the gas passing through this cavity cannot be treated by the catalyst. In addition, when attaching the catalyst, the catalyst may accumulate in the narrow space at the joint between the corrugated plate and the flat plate or in the area where the radius of curvature of the corrugated plate is small.
The catalyst tended to adhere thinly to flat areas, making it impossible to utilize the catalyst effectively. Furthermore, in the above-mentioned capillary type, each capillary tube is welded together, so this capillary tube must have a size that allows welding, and if the capillary tube has such dimensions, the inner diameter will also be small. Because of their large size, there is a risk that contact between the catalyst on the inner surface of the capillary and the flowing gas may become insufficient.
（問題点を解決するための手段）
本発明は、細管として注射針のような極めて細い金属管
の使用を可能とし、これにより排ガスと触媒の接触を良
好にするようにしたもので、その手段は、耐食性をもつ
金属製の多数の細管を相互にろう付けすることにより結
束してメタルハニカムを構成し、該メタルハニカムを筒
状のケーシング内にろう付けしたを特徴とする。(Means for Solving the Problems) The present invention makes it possible to use an extremely thin metal tube like a syringe needle as the thin tube, thereby improving the contact between the exhaust gas and the catalyst. is characterized in that a large number of corrosive-resistant metal thin tubes are brazed together to form a metal honeycomb, and the metal honeycomb is brazed inside a cylindrical casing.
（作 用）
前記の手段により、多数の細管は空洞を生じることなく
密に一体結合され、ケーシング内に確実に保持される。(Function) By the means described above, a large number of thin tubes are tightly and integrally connected without creating any cavities, and are securely held within the casing.
そして溶接によるもののように管肉に変化を与えないか
ら、細管形状が変化せず排ガスの流通を阻害することな
く浄化作用を行なう。In addition, unlike welding, the tube wall does not change, so the shape of the thin tube does not change and the purifying action is performed without obstructing the flow of exhaust gas.
（実施例） 以下本発明の実施例を図面によって説明する。(Example) Embodiments of the present invention will be described below with reference to the drawings.
第１図、第２図において、（１）は円筒状をなすケーシ
ングで、その上流及び下流側に流入管（２）及び流出管
（３）が連結される。ケーシング（１）内には触媒担体
としてのメタルハニカム（４）が固定されており、該ハ
ニカム（４）は、第３図に示すように、ステンレス鋼製
の多数の細管（５）、（５）・・・を金属ろう（６）で
相互にろう付けすることにより管相互の隙間を完全に埋
めて一体に結束したものである。In FIGS. 1 and 2, (1) is a cylindrical casing, and an inflow pipe (2) and an outflow pipe (3) are connected to the upstream and downstream sides of the casing (1). A metal honeycomb (4) as a catalyst carrier is fixed inside the casing (1), and as shown in FIG. )... are brazed to each other with metal solder (6) to completely fill the gaps between the tubes and bind them together.
細管（５）としては、ステンレス鋼の如き耐食金属を用
い、注射針に使用されるような外径１〜１．２ｍｍ、肉
厚５０１Ｌｍ程度の管材が使用される。The thin tube (5) is made of a corrosion-resistant metal such as stainless steel, and has an outer diameter of 1 to 1.2 mm and a wall thickness of about 501 Lm, such as those used for injection needles.
この細管（５）の結束、ケーシング（１）への取付けは
例えば第４図に示す手段により行なうことができる。同
図において（１０は案内筒で、一端にテーパ状の案内面
（１１）、他端に段状のケーシングの嵌合部Ｃ＋ａを備
える。This thin tube (5) can be bound and attached to the casing (1) by the means shown in FIG. 4, for example. In the figure, (10 is a guide cylinder, which has a tapered guide surface (11) at one end and a stepped casing fitting part C+a at the other end.
ケーシング（１）を嵌合部（１？に嵌め、多数の細管（
５）の外面の長手方向の一部又は全部にペースト状又は
粉状の金属ろう材を付着させておき、これをまとめて案
内筒ｌ′ＩＯ内に案内面（１１を経て押込み、嵌合部ｑ
ｂにはケーシング（１）を嵌合して、ピストン形の押具
（１３１を案内面ａ′Ｄから押込み、細管（５）群をケ
ーシング（１）内に押出し圧入する。Fit the casing (1) into the fitting part (1?) and insert a large number of thin tubes (
Paste or powder metal brazing material is adhered to part or all of the longitudinal direction of the outer surface of 5), and it is pushed together into the guide tube l'IO through the guide surface (11), and the fitting part q
The casing (1) is fitted into the casing (1), and the piston-shaped pusher (131 is pushed in from the guide surface a'D to push and press fit the group of thin tubes (5) into the casing (1).
次にこのケーシング（１）を炉中に入れて加熱後冷却す
ると、細管相互及びケーシング（１）は一体にろう付け
される。したがってメタルハニカム（４）が形成される
と同時にケーシング（１）への固定が行なわれる。しか
し、このような手段に代えて、ケーシング外でメタルハ
ニカムのみを作り、これをケーシング内にろう付けする
ようにしてもよい。またケーシングの断面形状は円形に
限らず楕円形など任意の形状とすることができる。Next, this casing (1) is placed in a furnace, heated and cooled, and the thin tubes and the casing (1) are brazed together. Therefore, the metal honeycomb (4) is formed and fixed to the casing (1) at the same time. However, instead of such means, only a metal honeycomb may be made outside the casing and brazed into the casing. Further, the cross-sectional shape of the casing is not limited to a circle, but can be any shape such as an ellipse.
（発明の効果）
本発明は、以上のように細管を金属ろうで隙間なく結束
するから、前記波板式のように排ガスが素通りする空隙
が生じない。そして溶接により結束するもののように管
肉を溶融することがないから、極めて細い管や肉厚の小
さい管を使用することができる。(Effects of the Invention) In the present invention, as described above, the thin tubes are bound together with metal solder without any gaps, so unlike the corrugated sheet type, there are no gaps through which exhaust gas can pass through. Furthermore, since the tube wall does not melt as in the case of binding by welding, extremely thin tubes or tubes with small wall thickness can be used.
このような細管を使用することにより、細管を通る排ガ
スは細管内面に付着させた触媒と充分に接触して無害化
の反応を行なうことができ、また薄肉の管の使用が可能
であるので、全断面積に対する通気面積の比率を大きく
することができ、小容積であっても高い処理能力をもた
せることができる。By using such a capillary, the exhaust gas passing through the capillary can sufficiently contact the catalyst attached to the inner surface of the capillary to carry out a detoxifying reaction, and thin-walled pipes can be used. The ratio of the ventilation area to the total cross-sectional area can be increased, and even a small volume can have a high processing capacity.
更に、管内面は曲率が一定であるから、触媒を均一に付
着させることができ、触媒の有効利用ができる。Furthermore, since the inner surface of the tube has a constant curvature, the catalyst can be deposited uniformly and the catalyst can be used effectively.
したがって、触媒装置を小型軽量にすることが可能にな
り、高価な耐食性金属の使用量を減少することができる
と共に、車体における触媒装置取付空間が小さくて済み
、取付手段も簡単になるというすぐれた効果を生じる。Therefore, the catalyst device can be made smaller and lighter, the amount of expensive corrosion-resistant metal used can be reduced, and the space for installing the catalyst device in the vehicle body is small, and the installation method is also simple. produce an effect.
第１図は本考案の実施例の縦断面図、第２図は第１図の
ｎ−ｎ線断面図、第３図（ａ）、（ｂ）は要部の拡大断
面図及び端面図、第４図は細管圧入手段の説明図である
。
（１）・・・ケーシング
（４）・・・メタルハニカム
（５）・・・細 管FIG. 1 is a longitudinal sectional view of an embodiment of the present invention, FIG. 2 is a sectional view taken along line nn in FIG. FIG. 4 is an explanatory diagram of the thin tube press-fitting means. (1)...Casing (4)...Metal honeycomb (5)...Thin tube
Claims (1)
ことにより結束してメタルハニカムを構成し、該メタル
ハニカムを筒状のケーシング内にろう付けしたを特徴と
する自動車排ガス用触媒担体。A catalyst carrier for automobile exhaust gas, characterized in that a large number of thin tubes made of corrosion-resistant metal are brazed together to form a metal honeycomb, and the metal honeycomb is brazed inside a cylindrical casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62152150A JPS63315150A (en) | 1987-06-18 | 1987-06-18 | Catalyst carrier for exhaust gas of car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62152150A JPS63315150A (en) | 1987-06-18 | 1987-06-18 | Catalyst carrier for exhaust gas of car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63315150A true JPS63315150A (en) | 1988-12-22 |
Family
ID=15534124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62152150A Pending JPS63315150A (en) | 1987-06-18 | 1987-06-18 | Catalyst carrier for exhaust gas of car |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63315150A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995007143A1 (en) * | 1993-09-09 | 1995-03-16 | Usui Kokusai Sangyo Kaisha, Ltd. | Metallic carrier |
| WO1995007142A1 (en) * | 1993-09-09 | 1995-03-16 | Usui Kokusai Sangyo Kaisha, Ltd. | Metallic carrier |
| US5628975A (en) * | 1989-02-06 | 1997-05-13 | Nippon Shokubai Kagaku Kogyo Co., Ltd. | Method for purifying exhaust gas from a diesel engine |
| JP2009297674A (en) * | 2008-06-16 | 2009-12-24 | Nakagawa Sangyo Kk | Metal carrier for exhaust gas purifying catalyst |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4984983A (en) * | 1972-12-20 | 1974-08-15 | ||
| JPS6245345A (en) * | 1985-08-19 | 1987-02-27 | シーメンス、アクチエンゲゼルシヤフト | Selective bonding of metal catalyst carrier |
-
1987
- 1987-06-18 JP JP62152150A patent/JPS63315150A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4984983A (en) * | 1972-12-20 | 1974-08-15 | ||
| JPS6245345A (en) * | 1985-08-19 | 1987-02-27 | シーメンス、アクチエンゲゼルシヤフト | Selective bonding of metal catalyst carrier |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5628975A (en) * | 1989-02-06 | 1997-05-13 | Nippon Shokubai Kagaku Kogyo Co., Ltd. | Method for purifying exhaust gas from a diesel engine |
| WO1995007143A1 (en) * | 1993-09-09 | 1995-03-16 | Usui Kokusai Sangyo Kaisha, Ltd. | Metallic carrier |
| WO1995007142A1 (en) * | 1993-09-09 | 1995-03-16 | Usui Kokusai Sangyo Kaisha, Ltd. | Metallic carrier |
| GB2295100A (en) * | 1993-09-09 | 1996-05-22 | Usui Kokusai Sangyo Kk | Metallic carrier |
| GB2295558A (en) * | 1993-09-09 | 1996-06-05 | Usui Kokusai Sangyo Kk | Metallic carrier |
| GB2295558B (en) * | 1993-09-09 | 1997-08-27 | Usui Kokusai Sangyo Kk | Metallic support |
| GB2295100B (en) * | 1993-09-09 | 1997-08-27 | Usui Kokusai Sangyo Kk | Metallic carrier |
| US5780386A (en) * | 1993-09-09 | 1998-07-14 | Usui Kokusai Sangyo Kaisha, Ltd. | Metallic support |
| JP2009297674A (en) * | 2008-06-16 | 2009-12-24 | Nakagawa Sangyo Kk | Metal carrier for exhaust gas purifying catalyst |
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