JPH05237396A - Catalyst device with metal carrier capable of electric heating - Google Patents
Catalyst device with metal carrier capable of electric heatingInfo
- Publication number
- JPH05237396A JPH05237396A JP4042564A JP4256492A JPH05237396A JP H05237396 A JPH05237396 A JP H05237396A JP 4042564 A JP4042564 A JP 4042564A JP 4256492 A JP4256492 A JP 4256492A JP H05237396 A JPH05237396 A JP H05237396A
- Authority
- JP
- Japan
- Prior art keywords
- metal foil
- carrier
- catalyst
- flat
- flat metal
- 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.)
- Withdrawn
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 182
- 239000002184 metal Substances 0.000 title claims abstract description 182
- 239000003054 catalyst Substances 0.000 title claims abstract description 61
- 238000005485 electric heating Methods 0.000 title abstract 2
- 239000011888 foil Substances 0.000 claims abstract description 131
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 2
- 230000004913 activation Effects 0.000 abstract description 8
- 239000000463 material Substances 0.000 description 17
- 238000002485 combustion reaction Methods 0.000 description 7
- 238000000746 purification Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 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
- 230000004323 axial length Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000012041 precatalyst Substances 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 238000010792 warming 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
- F01N3/18—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 methods of operation; Control
- F01N3/20—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 methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
- F01N3/2013—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means
- F01N3/2026—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means directly electrifying the catalyst substrate, i.e. heating the electrically conductive catalyst substrate by joule effect
-
- 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
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/30—Honeycomb supports characterised by their structural details
- F01N2330/32—Honeycomb supports characterised by their structural details characterised by the shape, form or number of corrugations of plates, sheets or foils
- F01N2330/322—Corrugations of trapezoidal form
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えば内燃機関の排気
浄化装置として使用するのに適した、通電加熱可能な金
属担体触媒装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal carrier catalyst device capable of being electrically heated, which is suitable for use as, for example, an exhaust gas purification device of an internal combustion engine.
【０００２】[0002]
【従来の技術】例えば内燃機関の排気ガスにはＮＯｘ、
ＣＯ、ＨＣ等の有害な物質が含まれているので、排気ガ
スを触媒装置に導き、これらの有害物質を触媒を用いて
酸化或いは還元することによって無害化（浄化）するこ
とが一般に行われているが、そのような触媒装置に使用
される触媒の一種として、ステンレス鋼のような耐熱性
合金からなる平坦なリボンと、同じく波状のリボンの各
細片を重ね合わせて、それらの全ての接触部分を蝋接
し、これを螺旋状に巻いて全体に多数の小さなチャンネ
ル部分を有する円板状に形成したものを触媒担体とな
し、その表面に白金やパラジウム等の貴金属を電気メッ
キ等によって薄く被覆した触媒を用いることは公知であ
る（例えば、特公昭４７−４８１０９号公報参照）。2. Description of the Related Art For example, NOx is contained in exhaust gas of an internal combustion engine,
Since harmful substances such as CO and HC are contained, it is generally performed to guide exhaust gas to a catalyst device and detoxify (purify) these harmful substances by oxidizing or reducing them using a catalyst. However, as a kind of catalyst used in such a catalytic device, a flat ribbon made of a heat-resistant alloy such as stainless steel is overlapped with strips of a corrugated ribbon, and all of them are in contact with each other. The part is brazed and spirally wound to form a disk with a large number of small channel parts, which is used as a catalyst carrier, and its surface is thinly coated with a precious metal such as platinum or palladium by electroplating. It is known to use the above catalyst (see, for example, Japanese Patent Publication No. 47-48109).
【０００３】内燃機関の冷間始動時には、排気浄化装置
の触媒も温度が低下しているから、その触媒が排気ガス
の保有している熱、或いは排気ガス中のＨＣやＣＯを酸
化処理する際に発生する熱等によって加熱されて、触媒
の温度が数百度の活性化温度に達するまでは排気浄化の
機能が十分に発揮されない。そこで、触媒を加熱して急
速に活性化温度に到達させる手段として、前記のような
金属担体を用いた触媒の場合は、機関始動時に金属担体
自体に直接通電して発熱させ、触媒の温度を急速に上昇
させるという触媒暖機方法も従来から試みられている。When the internal combustion engine is cold-started, the temperature of the catalyst of the exhaust gas purifying apparatus is also lowered, so that when the catalyst oxidizes heat contained in the exhaust gas or HC or CO in the exhaust gas. The exhaust gas purification function is not sufficiently exerted until the temperature of the catalyst reaches an activation temperature of several hundreds of degrees by being heated by heat generated in the exhaust gas. Therefore, as a means for heating the catalyst to rapidly reach the activation temperature, in the case of a catalyst using a metal carrier as described above, when the engine is started, the metal carrier itself is directly energized to generate heat and the temperature of the catalyst is changed. A catalyst warming method of rapidly raising the temperature has also been attempted.
【０００４】図５はそのような触媒装置の構成例を具体
的に示したもので、金属担体触媒装置１はケーシングを
兼ねた外筒２の中に触媒の骨格となるハニカム状の金属
担体３を収容しており、金属担体３は、帯状の平坦な金
属箔４と波状の金属箔５の各一端が中心電極６に取り付
けられた上で、中心電極６の周りに交互に複数組程度巻
き付けられてハニカム状に構成されている。実際には、
中心電極６に巻き付ける前に、平坦な金属箔４と波状の
金属箔５を重ね合わせて、それらの接触部分の一部分或
いは全部を溶接或いは蝋接等の方法によって接合するこ
とにより、予め二重構造の帯状体７を形成しておき、そ
の帯状体７の一端を中心電極６に取り付けてそれに巻き
付けるという方法をとることもある。FIG. 5 specifically shows an example of the structure of such a catalyst device. In a metal carrier catalyst device 1, a honeycomb-shaped metal carrier 3 serving as a skeleton of a catalyst is provided in an outer cylinder 2 which also serves as a casing. The metal carrier 3 has a strip-shaped flat metal foil 4 and a corrugated metal foil 5 each having one end attached to the center electrode 6, and a plurality of sets alternately wound around the center electrode 6. And is formed in a honeycomb shape. actually,
Before being wound around the center electrode 6, the flat metal foil 4 and the corrugated metal foil 5 are overlapped, and a part or all of their contact portions are joined by a method such as welding or brazing, thereby forming a double structure in advance. The band 7 may be formed in advance, one end of the band 7 may be attached to the center electrode 6 and wound around the center electrode 6.
【０００５】中心電極６の周りに巻き付けられた平坦な
金属箔４及び波状の金属箔５の外周端（或いは帯状体７
の外周端）は、接地電極を兼ねている外筒２に接続さ
れ、中心電極６と外筒２との間にバッテリー等の電源８
が接続されて、平坦な金属箔４と波状の金属箔５とが形
成する並列回路に電流を流し、それらによって構成され
る金属担体３自体を直接に発熱させる。積層される帯状
体７の層間は酸化物等の絶縁材によって絶縁されてお
り、層間に電流が流れるのを阻止している。なお図５に
おいて、９はスイッチ、１０は中心電極６を支持する導
電性の支持棒を示しており、支持棒１０は外筒２の孔を
絶縁体を介して通過している。この場合は、平坦な金属
箔４と波状の金属箔５の材料であるステンレス鋼等の固
有の電気抵抗が、ジュール熱を発生させるために利用さ
れており、触媒担体自体が電気的なヒータを兼ねること
になるから、触媒担体と別にヒータ等を設けて加熱する
場合に比べて、電源８から供給される電力が無駄なく触
媒を加熱することに利用されるという利点がある。[0005] The flat metal foil 4 and the corrugated metal foil 5 wound around the center electrode 6 have outer peripheral edges (or strips 7).
The outer peripheral end) is connected to the outer cylinder 2 which also serves as a ground electrode, and a power source 8 such as a battery is provided between the center electrode 6 and the outer cylinder 2.
Are connected to each other, and a current is caused to flow in a parallel circuit formed by the flat metal foil 4 and the corrugated metal foil 5, and the metal carrier 3 itself constituted by them is directly heated. The layers of the laminated strips 7 are insulated from each other by an insulating material such as an oxide to prevent a current from flowing between the layers. In FIG. 5, 9 is a switch, 10 is a conductive support rod that supports the center electrode 6, and the support rod 10 passes through the hole of the outer cylinder 2 via an insulator. In this case, the electric resistance peculiar to the flat metal foil 4 and the corrugated metal foil 5 such as stainless steel is used to generate Joule heat, and the catalyst carrier itself serves as an electric heater. Therefore, there is an advantage that the electric power supplied from the power source 8 is used for heating the catalyst without waste, as compared with the case where a heater or the like is provided separately from the catalyst carrier for heating.
【０００６】[0006]
【発明が解決しようとする課題】通電加熱可能な金属担
体触媒装置１においては、平坦な金属箔４と波状の金属
箔５が電気的な並列回路を構成するが、波状の金属箔５
はその名の通り波状に曲折しているから、対応する平坦
な金属箔４に比べてその全長が著しく長くなり、それに
応じて電気抵抗の値も大きくなるにもかかわらず、従来
は平坦な金属箔４と波状の金属箔５とを同じ材質で、し
かも同じ厚さ、幅の材料によって製作していたため、暖
機を行う際にそれらの並列回路に電源８を接続して通電
すると、電流は全長の短い平坦な金属箔４の方により多
く流れ、波状の金属箔５の方に流れる電流が比較的少な
くなる結果、波状の金属箔５の発熱量が平坦な金属箔４
の発熱量を下回り、温度の上昇が不十分になって、全体
に均一な温度分布が得られないという問題があった。し
かしながら、電流量を増やして全体に発熱量を増加させ
ると、平坦な金属箔４を流れる電流量が過大になり、部
分的な温度差によって金属担体内に損傷を生じる恐れが
あり、電源の容量の制約もあるので、電流量を増大させ
ることはできない。In the metal carrier catalyst device 1 capable of being electrically heated, the flat metal foil 4 and the corrugated metal foil 5 form an electrical parallel circuit. However, the corrugated metal foil 5 is used.
As its name suggests, it is bent in a wave shape, so its total length is significantly longer than that of the corresponding flat metal foil 4, and the electric resistance value is correspondingly large. Since the foil 4 and the corrugated metal foil 5 are made of the same material and have the same thickness and width, when the power source 8 is connected to the parallel circuit to carry on the warm-up, the electric current becomes A larger amount of current flows in the flat metal foil 4 having a shorter overall length, and a smaller amount of current flows in the wavy metal foil 5. As a result, the amount of heat generated by the wavy metal foil 5 is flat.
There is a problem in that the temperature rise is insufficient and the temperature rise is insufficient, and a uniform temperature distribution cannot be obtained throughout. However, if the amount of current is increased to increase the amount of heat generation as a whole, the amount of current flowing through the flat metal foil 4 becomes excessive, which may cause damage to the inside of the metal carrier due to a partial temperature difference. Since there is also a restriction of, the amount of current cannot be increased.
【０００７】平坦な金属箔と波状の金属箔の発熱量及び
温度が異なる結果、図５に矢印で示したように内燃機関
の排気ガス１１が流入すると、触媒の活性化温度に到達
している平坦な金属箔４に接触した排気ガス１１は、金
属担体３の表面に被覆されている触媒物質の存在の下に
酸化或いは還元されることによって浄化され、無害の排
気１２となって流出するが、それよりも低温の波状の金
属箔５に接触した排気ガス１１は、波状の金属箔５が時
間的に遅れて活性化温度に達するまでは、浄化されない
ままで排出されることになる。従って、通電加熱可能な
金属担体触媒装置であっても、暖機中においては排出さ
れる排気の中に未処理の排気ガスが混入して、触媒装置
全体としての浄化性能が悪化することがある。As a result of the difference in calorific value and temperature between the flat metal foil and the corrugated metal foil, when the exhaust gas 11 of the internal combustion engine flows in as shown by the arrow in FIG. 5, the activation temperature of the catalyst is reached. The exhaust gas 11 contacting the flat metal foil 4 is purified by being oxidized or reduced in the presence of the catalytic substance coated on the surface of the metal carrier 3, and flows out as harmless exhaust gas 12. The exhaust gas 11 contacting the corrugated metal foil 5 having a temperature lower than that is discharged without being purified until the corrugated metal foil 5 reaches the activation temperature with a time delay. Therefore, even with a metal-supported catalyst device that can be electrically heated, untreated exhaust gas may be mixed into the exhaust gas during warm-up, and the purification performance of the entire catalyst device may deteriorate. ..
【０００８】本発明は、従来から知られている通電加熱
可能な金属担体触媒装置において起こり得るこの問題に
対処して、それを解決するための簡単で且つ有効な手段
を提供することを、発明が解決しようとする課題とする
ものである。SUMMARY OF THE INVENTION The present invention provides a simple and effective means for addressing and solving this problem that may occur in conventionally known electrically-heatable metal-supported catalyst devices. Is a problem to be solved.
【０００９】[0009]
【課題を解決するための手段】本発明の通電加熱可能な
金属担体触媒装置は、平坦な金属箔と波状の金属箔の一
端を棒状の中心電極の周りに取り付け、それらが交互に
重なり合うように前記中心電極の周りに渦巻き状に巻き
付けることにより、ハニカム状に形成された金属担体を
備えている金属担体触媒装置において、前記平坦な金属
箔と前記波状の金属箔の電気抵抗の値が、実質的に同じ
大きさになるように構成されていることを特徴とする。In the metal-supported catalyst device of the present invention which can be electrically heated, one end of a flat metal foil and one end of a corrugated metal foil are attached around a rod-shaped center electrode so that they are alternately superposed. By spirally winding around the center electrode, in a metal carrier catalyst device including a metal carrier formed in a honeycomb shape, the electric resistance values of the flat metal foil and the wavy metal foil are substantially It is characterized in that they have the same size.
【００１０】[0010]
【作用】波状の金属箔はそれと重ね合わせられる平坦な
金属箔よりも必然的に長くなるが、本発明においては、
それぞれの電気抵抗の値が実質的に同じ大きさになるよ
うに構成するので、それらを電気的に並列接続すること
によって、それらに流れる電流の値を実質的に同じ大き
さにすることができる。従って、暖機時に通電したとき
の両者の発熱量は同じになり、金属担体内部において部
分的に温度上昇の遅速の差が生じることがなく均一に温
度上昇するので、電流量を多少増加する等によって無理
なく温度上昇速度を高めることが可能になり、触媒は迅
速に活性化温度に到達して浄化機能を発揮することがで
きる。The corrugated metal foil inevitably becomes longer than the flat metal foil laminated with it, but in the present invention,
Since the respective electric resistances are configured to have substantially the same magnitude, the values of the currents flowing through them can be made substantially the same magnitude by electrically connecting them in parallel. .. Therefore, the amount of heat generated by both is the same when energized during warm-up, and the temperature rises evenly within the metal carrier without any difference in the slowness of temperature rise. As a result, the temperature rising rate can be increased without difficulty, and the catalyst can quickly reach the activation temperature and exert the purification function.
【００１１】[0011]
【実施例】本発明の第１実施例を図１〜図４に示す。図
５に示した従来技術による金属担体触媒装置１の各部分
と実質的に同様な部分については、同じ名称を与えると
共に、同じ参照符号を付して対照を容易にしている。図
４に示すように、通電加熱可能な金属担体触媒装置１
は、接地電極を兼ねている外筒２の内部に形成された触
媒の金属担体３と、それに付帯する部分からなってい
る。図示例の外筒２は、ケーシング２’とは別体の、金
属担体３と同じ軸方向長さを有する薄肉の金属リングで
ある。ケーシング２’の内部の下流側には別の大きな主
触媒担体１３が収容されており、金属担体３が担持する
触媒は、主触媒担体１３の暖機を促進するための前置触
媒としての働きをする。つまり、始動時には比較的小型
の金属担体３に通電することによって、金属担体３の温
度を急速に触媒の活性化温度まで上昇させ、早期に排気
ガスの浄化作用を行わせることによって、その際に放出
される熱を主触媒担体１３に与えて、その暖機を促進す
るように構成されている。この場合、主触媒担体１３は
どのような形式、材質のものであってもよい。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention is shown in FIGS. Portions substantially similar to those of the metal-supported catalyst device 1 according to the prior art shown in FIG. 5 are given the same names and the same reference numerals to facilitate the comparison. As shown in FIG. 4, a metal-supported catalyst device 1 capable of electrically heating
Is composed of a catalyst metal carrier 3 formed inside the outer cylinder 2 which also serves as a ground electrode, and a portion incidental thereto. The outer cylinder 2 in the illustrated example is a thin metal ring that is separate from the casing 2 ′ and has the same axial length as the metal carrier 3. Another large main catalyst carrier 13 is housed on the downstream side inside the casing 2 ′, and the catalyst carried by the metal carrier 3 serves as a pre-catalyst for promoting warm-up of the main catalyst carrier 13. do. That is, by energizing the relatively small metal carrier 3 at the time of starting, the temperature of the metal carrier 3 is rapidly raised to the activation temperature of the catalyst, and the exhaust gas purification action is performed at an early stage. The heat released is given to the main catalyst carrier 13 to accelerate the warm-up thereof. In this case, the main catalyst carrier 13 may be of any type and material.
【００１２】図１に示すように、第１実施例における金
属担体３は、比較的薄い平坦な金属箔４と、それよりも
厚い波状の金属箔５から構成されている点が特徴であ
る。具体的な数値例をあげると、厚さｔa が３０μｍに
なるまで圧延した帯状の平坦な金属箔４と、同じ材料か
らなる厚さｔb が５０μｍの帯状の長い金属箔を歯車の
ように噛み合う工具の間を通して波状に成形した金属箔
５とを用意し、予めそれらを重ね合わせて、接触してい
る部分の例えば鎖線１４で示す箇所をレーザ溶接等の方
法によって相互に接合して、二重構造の帯状体７を形成
した後、複数組の帯状体７の各一端を、図２に示すよう
に棒状の中心電極６の周りに均等に取り付けて、全ての
帯状体７が中心電極６の上に積層されるように巻き上
げ、それを外筒２内に嵌め込んで外周縁を外筒２の内面
に密着させることにより、図３に示すようなハニカム状
の金属担体３を構成する。この際に、適度の張力が平坦
な金属箔４に生じるように中心電極６にトルクをかけ
て、帯状体７が巻き締められた状態に保持するのが、ス
コーピング現象を防止するために望ましい。金属担体３
はケーシング２’の中に嵌入されて定位置に固定され、
中心電極６が電源８に通じる支持棒１０に螺着されるこ
とによって電気的にも接続される。As shown in FIG. 1, the metal carrier 3 in the first embodiment is characterized in that it is composed of a relatively thin flat metal foil 4 and a corrugated metal foil 5 thicker than the flat metal foil 4. As a specific numerical example, a strip-shaped flat metal foil 4 rolled to a thickness t a of 30 μm and a strip-shaped long metal foil made of the same material and having a thickness t b of 50 μm are formed like a gear. A metal foil 5 formed in a wave shape is prepared between the meshing tools, the metal foils 5 are superposed on each other in advance, and the portions in contact with each other, for example, the portions indicated by chain lines 14 are joined to each other by a method such as laser welding. After forming the strip-shaped bodies 7 having a heavy structure, one end of each of the plurality of sets of strip-shaped bodies 7 is evenly attached around the rod-shaped center electrode 6 as shown in FIG. It is rolled up so as to be laminated on top of it, and it is fitted into the outer cylinder 2 and the outer peripheral edge is brought into close contact with the inner surface of the outer cylinder 2 to form a honeycomb-shaped metal carrier 3 as shown in FIG. At this time, in order to prevent the scoping phenomenon, it is desirable to apply a torque to the center electrode 6 so that an appropriate tension is generated in the flat metal foil 4 and hold the band-shaped body 7 in a wound state. .. Metal carrier 3
Is fitted into the casing 2'and fixed in place,
The center electrode 6 is also electrically connected by being screwed to the support rod 10 which is connected to the power supply 8.
【００１３】金属箔４及び５は、その材料としてステン
レス鋼のような耐熱性、耐蝕性に優れた金属を用いるこ
とが望ましく、例えば、２０％のクローム及び５％のア
ルミニウムと残部が鉄からなる鉄系合金等を使用するこ
とができる。The metal foils 4 and 5 are preferably made of a metal having excellent heat resistance and corrosion resistance, such as stainless steel. For example, 20% chrome and 5% aluminum and the balance iron. An iron-based alloy or the like can be used.
【００１４】第１実施例の場合は、このような材質の板
状材料を比較的薄くなるまで圧延した平坦な金属箔４
と、それよりも厚いが同じ材質の板状材料を成形した波
状の金属箔５から金属担体３を構成している。具体的に
は前述のように厚さｔa が３０μｍの板状材料を帯状に
裁断して平坦な金属箔４とすると共に、波状の金属箔５
の方は平坦な金属箔４よりも厚い、厚さｔb が５０μｍ
の板状材料を使用するとしたが、これらの数値は、図１
に示すような金属担体３の形状において、波状の金属箔
５の一つの波を構成する金属箔の長さＬb を３．７５ｍ
ｍ、それに対応する平坦な金属箔４の長さＬa （波状の
金属箔５の波長）を２．５ｍｍにとったことから算出さ
れたものである。In the case of the first embodiment, a flat metal foil 4 obtained by rolling a plate-like material of such a material until it becomes relatively thin
The metal carrier 3 is composed of a corrugated metal foil 5 formed by molding a plate-shaped material which is thicker than the above but the same material. Specifically, as described above, a plate-like material having a thickness ta of 30 μm is cut into a band shape to form a flat metal foil 4, and a corrugated metal foil 5 is formed.
Is thicker than the flat metal foil 4 and has a thickness t b of 50 μm.
It is assumed that the plate-shaped material of Fig. 1 is used.
In the shape of the metal carrier 3 as shown in FIG. 3, the length L b of the metal foil forming one wave of the wavy metal foil 5 is 3.75 m.
m, and the length L a (wavelength of the corrugated metal foil 5) of the flat metal foil 4 corresponding thereto is set to 2.5 mm.
【００１５】第１実施例の場合に限らず一般的に言え
ば、平坦な金属箔４の材質によって定まる比抵抗の値を
ｒa ，その幅をＷa とし、波状の金属箔５の材質によっ
て定まる比抵抗の値をｒb 、その幅をＷb とすると、波
状の金属箔５の波長、即ち１つの周期の長さに対応する
平坦な金属箔４の長さＬa の電気抵抗Ｒa の値は、比抵
抗ｒa 及び長さＬa に比例すると共に断面積（幅Ｗb ×
厚さｔa ）に反比例することから、 Ｒa ＝（ｒa ・Ｌa ）／（Ｗa ・ｔa ） …(1) であり、また、その波長に含まれる波状の金属箔５の実
際の長さＬb の電気抵抗Ｒb の値は，同じ理由から、 Ｒb ＝（ｒb ・Ｌb ）／（Ｗb ・ｔb ） …(2) であるから、サンプルとして１個の波毎の平坦な金属箔
４の抵抗値Ｒa と波状の金属箔５の抵抗値Ｒb をとり、
それらの値を等しくして、並列接続状態においてそれら
に流れる電流を等しくすることにより、結果的に平坦な
金属箔４と波状の金属箔５の全体の発熱量を等しくする
ためには、 （ｒa ・Ｌa ）／（Ｗa ・ｔa ）＝（ｒb ・Ｌb ）／（Ｗb ・ｔb ） …(3) という条件式を満足する必要がある。Not limited to the case of the first embodiment, generally speaking, the value of the specific resistance determined by the material of the flat metal foil 4 is r a , the width thereof is W a, and depending on the material of the corrugated metal foil 5. Letting the value of the specific resistance be r b and the width thereof be W b , the electrical resistance R a of the length L a of the flat metal foil 4 corresponding to the wavelength of the wavy metal foil 5, that is, the length of one cycle. Is proportional to the specific resistance r a and the length L a, and the cross-sectional area (width W b ×
Since it is inversely proportional to the thickness t a ), R a = (r a · L a ) / (W a · t a ) ... (1) and the actual shape of the wavy metal foil 5 included in the wavelength is For the same reason, the value of the electric resistance R b of the length L b is R b = (r b · L b ) / (W b · t b ) ... (2) Therefore, one wave is used as a sample. taking the resistance value R b of the resistance value R a and corrugated metal foil 5 of flat metal foils 4 for each,
In order to equalize the total heat generation amounts of the flat metal foil 4 and the corrugated metal foil 5 by equalizing their values and equalizing the currents flowing through them in the parallel connection state, (r a · L a ) / (W a · t a ) = (r b · L b ) / (W b · t b ) ... (3) It is necessary to satisfy the conditional expression.
【００１６】第１実施例の場合は、平坦な金属箔４と波
状の金属箔５の材質及び幅をそれぞれ同じとしたから、
(3) の条件式は、簡単に、 Ｌa ／ｔa ＝Ｌb ／ｔb …(4) となり、この式から ｔa ＝ｔb ・Ｌa ／Ｌb …(5) ｔb ＝ｔa ・Ｌb ／Ｌa …(6) を得るので、波状の金属箔５の波形形状によって決まる
Ｌa ／Ｌb 或いはその逆数Ｌb ／Ｌa に対して、主とし
て強度の面から決めた一方の金属箔の厚さｔa 又はｔb
の値を乗算すれば、他方の金属箔の厚さが直ちに求めら
れる。前述の厚さｔa 及びｔb の具体的な数値は、この
ようにして求められたものである。In the case of the first embodiment, since the flat metal foil 4 and the corrugated metal foil 5 are made of the same material and have the same width,
Expression (3) is easily, L a / t a = L b / t b ... (4) next, t a = t b · L a / L b ... (5) From this equation t b = t Since a · L b / L a (6) is obtained, one is determined mainly from the standpoint of strength with respect to L a / L b or its reciprocal L b / L a determined by the corrugated shape of the corrugated metal foil 5. Thickness of the metal foil of t a or t b
By multiplying by the value of, the thickness of the other metal foil is immediately determined. The specific numerical values of the thicknesses t a and t b described above are obtained in this way.
【００１７】金属担体３はその表面に触媒物質が被覆さ
れていて、図４に示すように、触媒装置１の入口１５が
図示しない内燃機関の排気通路に接続されることによ
り、機関の排気ガスがハニカム状の金属担体３の孔を通
過するときに、排気ガスに含まれるＨＣやＣＯ等の有害
な物質を無害化するのに役立つ。機関の冷間始動時等に
おいては、金属担体３の温度も低く触媒が活性化されて
いないので、急速に金属担体３の温度を上昇させるため
に、中心電極６を電源８であるバッテリーの＋極に、外
筒２を同じく−極に接続して金属担体３に直接電流を流
し、ジュール熱を発生させて触媒を加熱する。金属担体
３を直接発熱させるので、熱が無駄なく利用され、比較
的少ない電力によって短時間内に触媒を活性化させ、排
気ガスの浄化作用を開始することができる。そして、そ
れによって発生する熱を加えた排気ガスの熱によって、
下流側の主触媒担体１３の温度も比較的早く上昇し、正
常な排気ガスの浄化作用を営むことができるようにな
る。The surface of the metal carrier 3 is coated with a catalytic substance, and as shown in FIG. 4, the inlet 15 of the catalytic device 1 is connected to an exhaust passage of an internal combustion engine (not shown), whereby exhaust gas of the engine is exhausted. Is useful for detoxifying harmful substances such as HC and CO contained in the exhaust gas when passing through the holes of the honeycomb-shaped metal carrier 3. When the engine is cold started, the temperature of the metal carrier 3 is also low and the catalyst is not activated. Therefore, in order to rapidly raise the temperature of the metal carrier 3, the center electrode 6 is connected to the + of the battery which is the power source 8. The outer cylinder 2 is also connected to the negative pole of the pole and an electric current is directly applied to the metal carrier 3 to generate Joule heat to heat the catalyst. Since the metal carrier 3 is directly heated, the heat can be used without waste, and the catalyst can be activated within a short time with a relatively small amount of electric power to start the exhaust gas purifying action. And by the heat of the exhaust gas, which adds the heat generated by it,
The temperature of the main catalyst carrier 13 on the downstream side also rises relatively quickly, and a normal exhaust gas purification action can be performed.
【００１８】機関の始動時等において通電加熱される金
属担体３内では、平坦な金属箔４と波状の金属箔５の電
気抵抗の値を第１実施例のような手段によって等しくし
ているために、２種類の金属箔４及び５が並列に接続さ
れている状態で同じ熱量を発生するので、金属担体３内
において温度上昇に遅速の差が生じることがなく、均等
に温度上昇して、それらに担持された触媒が一様に活性
化される。従って、暖機を行っている状態でも、金属担
体３の触媒による排気ガスの浄化機能は早くから十分に
発揮され、未処理の排気ガスを放出する時間が短くな
る。In the metal carrier 3 which is electrically heated when the engine is started, the flat metal foil 4 and the corrugated metal foil 5 have the same electric resistance value by means as in the first embodiment. In addition, since the same amount of heat is generated in a state where the two kinds of metal foils 4 and 5 are connected in parallel, there is no difference in slow speed in the temperature rise in the metal carrier 3, and the temperature rises evenly, The catalysts carried on them are uniformly activated. Therefore, even in the warm-up state, the exhaust gas purifying function of the catalyst of the metal carrier 3 is sufficiently exerted from an early stage, and the time for releasing the untreated exhaust gas is shortened.
【００１９】第１実施例の場合は、平坦な金属箔４の厚
さｔa を波状の金属箔５の厚さｔbよりも薄くして、そ
の抵抗値を相対的に高めることにより温度差の問題に対
処しているが、平坦な金属箔４と波状の金属箔５からな
る帯状体７を中心電極６の周りに巻き付けて、更にトル
クをかけて巻き締めるときでも、平坦な金属箔４には張
力が作用するだけであるから、厚さｔa が小さくても強
度上の問題はない。むしろ、平坦な金属箔４の厚さｔa
を薄くすることによって、金属担体３全体の重量を軽減
することができるという別の利点が出てくる。[0019] In the case of the first embodiment, the temperature difference by the thickness t a of the flat metal foils 4 made thinner than the thickness t b of the corrugated metal foil 5, relatively increasing the resistance However, even when the strip-shaped body 7 including the flat metal foil 4 and the corrugated metal foil 5 is wound around the center electrode 6 and further tightened with a torque, the flat metal foil 4 is the since only tension acts, the thickness t a is no problem on the strength even smaller. Rather, the thickness t a of the flat metal foil 4
Another advantage is that the weight of the metal carrier 3 as a whole can be reduced by reducing the thickness.
【００２０】図６は本発明の第２実施例を示したもので
ある。この例では、平坦な金属箔４の幅Ｗa に対して波
状の金属箔５の幅Ｗb を小さく取ることによって、両者
の電気抵抗値を揃えている。この方法によって両者の抵
抗値を等しくすることができることは、前記(3) の条件
式から明らかである。そこで例えば、 （ｒa ・Ｌa ）／（Ｗa ・ｔa ）＝（ｒb ・Ｌb ）／（Ｗb ・ｔb ） …(3) において、平坦な金属箔４と波状の金属箔５の材質が同
じであって比抵抗ｒa とｒb が等しく、厚さｔa とｔb
も同じである場合には、 Ｌa ／Ｗa ＝Ｌb ／Ｗb …(7) となるから、 Ｗa ＝Ｗb ・Ｌa ／Ｌb …(8) Ｗb ＝Ｗa ・Ｌb ／Ｌa …(9) が得られ、前述のように、波状の金属箔５の形状によっ
てＬa ／Ｌb 或いはその逆数であるＬb ／Ｌa の値が決
まるので、更にどちらか一方の金属箔４又は５の幅Ｗa
又はＷb を決めることによって、同じ抵抗値をもたらす
他方の金属箔５又は４の幅Ｗb 又はＷa の値が直ちに算
出される。FIG. 6 shows a second embodiment of the present invention. In this example, by taking small width W b of the corrugated metal foil 5 with respect to the width W a of the flat metal foils 4 are aligned electrical resistance therebetween. It is clear from the conditional expression (3) that the resistance values of both can be made equal by this method. Therefore, for example, in (r a · L a ) / (W a · t a ) = (r b · L b ) / (W b · t b ) ... (3), the flat metal foil 4 and the corrugated metal foil are 5 material is the same and equal specific resistance r a and r b, the thickness t a and t b
In the case are the same, L a / W a = L b / W b ... because made (7), W a = W b · L a / L b ... (8) W b = W a · L b / L a (9) is obtained, and as described above, the value of L a / L b or its reciprocal L b / L a is determined depending on the shape of the corrugated metal foil 5. Width W a of metal foil 4 or 5
Alternatively, by determining W b , the value of the width W b or W a of the other metal foil 5 or 4 which gives the same resistance value is immediately calculated.
【００２１】具体的な数値を挙げると、第１実施例の場
合と同様に、波状の金属箔５の波長Ｌa が２．５ｍｍ
で、その実際の長さＬb が３．７５ｍｍであるとし、波
状の金属箔５の幅Ｗb を４０ｍｍに選んだときは、前記
(8) 式によって、 Ｗa ＝Ｗb ・Ｌa ／Ｌb ＝４０×２．５÷３．７５＝２６．６６ となるので、平坦な金属箔４の幅Ｗa を２７ｍｍ程度に
とればよい。平坦な金属箔４の幅Ｗa を変えることはき
わめて簡単に行い得るから、第２実施例は非常に容易に
実施することができるという利点がある。To give specific numerical values, as in the case of the first embodiment, the wavelength L a of the corrugated metal foil 5 is 2.5 mm.
When the actual length L b is 3.75 mm and the width W b of the corrugated metal foil 5 is 40 mm,
According to the equation (8), W a = W b · L a / L b = 40 × 2.5 ÷ 3.75 = 26.66, so if the width W a of the flat metal foil 4 is set to about 27 mm. Good. Since it is extremely easy to change the width W a of the flat metal foil 4, the second embodiment has an advantage that it can be carried out very easily.
【００２２】さらに、第２実施例では、波状の金属箔５
の上流側のみに、この波状の金属箔５よりも幅の狭い平
坦な金属箔４を設けているので、この平坦な金属箔４に
よって、波状の金属箔５の特に上流側においては、波状
の金属箔５の下流側よりも発熱量が大きくなる。その結
果、触媒担体の上流側に設けられる図示しない内燃機関
から排出された未燃ガスは、触媒担体の高温となった上
流側の部分によって効率よく燃焼し、排出ガスの完全燃
焼を容易にすると共に、触媒担体に担持されている触媒
の活性化も容易に達成させることができる。Further, in the second embodiment, the corrugated metal foil 5 is used.
Since the flat metal foil 4 having a width narrower than the wavy metal foil 5 is provided only on the upstream side of the wavy metal foil, the flat metal foil 4 allows the wavy metal foil 5 to have a wavy shape, particularly on the upstream side. The calorific value is larger than that on the downstream side of the metal foil 5. As a result, the unburned gas discharged from the internal combustion engine (not shown) provided upstream of the catalyst carrier is efficiently burned by the high temperature upstream portion of the catalyst carrier, facilitating complete combustion of the exhaust gas. At the same time, activation of the catalyst supported on the catalyst carrier can be easily achieved.
【００２３】第２実施例の変形として、図７に示した第
３実施例では、平坦な金属箔４に比較的大きな窓孔状の
スリット１６を設けることによって、平坦な金属箔４の
平均的な幅を減少させて、第２実施例の場合と同じよう
な作用効果をあげている。平坦な金属箔４と波状の金属
箔５の幅、厚さ、及び材質が同じであれば、一つの目安
として、スリット１６を設けることにより、平坦な金属
箔４の面積を３５％程度減少させれば（６５％程度残せ
ば）、平坦な金属箔４と波状の金属箔５の抵抗値を同程
度に揃えることができる。第３実施例の利点としては、
実施が容易であることの他に、第２実施例と違って、ハ
ニカム状の金属担体３の両端部に平坦な金属箔４が残る
ので、機械的な強度が向上するという点も見逃せない。As a modification of the second embodiment, in the third embodiment shown in FIG. 7, a relatively large window-hole-shaped slit 16 is provided in the flat metal foil 4 so that the flat metal foil 4 can be averaged. The width is reduced to obtain the same effect as that of the second embodiment. If the flat metal foil 4 and the corrugated metal foil 5 have the same width, thickness, and material, the slit 16 is provided as one guide to reduce the area of the flat metal foil 4 by about 35%. If so (leaving about 65%), the resistance values of the flat metal foil 4 and the corrugated metal foil 5 can be made equal to each other. The advantage of the third embodiment is that
In addition to being easy to carry out, unlike the second embodiment, since flat metal foils 4 remain at both ends of the honeycomb-shaped metal carrier 3, it is also notable that the mechanical strength is improved.
【００２４】第２実施例の別の変形として、図８に示し
た第４実施例では、平坦な金属箔４に多数の孔１７を設
けることによって、同じような作用効果をあげている。
孔１７を設けることによる面積の減少率の目安は、第３
実施例において述べたのと同様な条件下では、やはり３
５％程度である。第４実施例の利点は、孔１７を設ける
ための設備や作業工程が、第３実施例においてスリット
１６を設けるよりも更に簡単になるという点にあり、そ
の他の点は第３実施例と同様である。As another modification of the second embodiment, in the fourth embodiment shown in FIG. 8, a large number of holes 17 are provided in the flat metal foil 4 to achieve the same effect.
The standard of the reduction rate of the area by providing the holes 17 is the third
Under the same conditions as described in the example, again 3
It is about 5%. The advantage of the fourth embodiment is that the equipment and work process for providing the holes 17 are simpler than the provision of the slits 16 in the third embodiment, and other points are the same as in the third embodiment. Is.
【００２５】更に、第５実施例として、図示してはいな
いが、平坦な金属箔４の材料と波状の金属箔５の材料と
を異なるものとし、比抵抗ｒa と比抵抗ｒb の間に差を
与えることによって、２つの金属箔４及び５の抵抗値を
揃えることができる。このようなことが可能であること
は、前記(3) の条件式から明らかである。例えば、(3)
式において、平坦な金属箔４と波状の金属箔５の幅
Ｗa 、Ｗb 及び厚さｔa 、ｔb がそれぞれ同じであれ
ば、(3) 式は簡単に、 ｒa ・Ｌa ＝ｒb ・Ｌb …(10) となるから、 ｒa ＝ｒb ・Ｌb ／Ｌa …(11) ｒb ＝ｒa ・Ｌa ／Ｌb …(12) が得られ、前述のように波状の金属箔５の形状によって
Ｌa ／Ｌb 或いはその逆数のＬb ／Ｌa の値が決まるの
で、比抵抗ｒa 及びｒb のとるべき値も決まり、ステン
レス鋼等の中から、そのような値の比抵抗を示す特定の
組成の材料を２種類選択すればよいことになる。耐熱性
及び耐蝕性のあるステンレス鋼に属するものでも、特定
の含有物質を増減するとか、異種の物質を一方に加える
等の操作を行うことによって比抵抗を変化させることが
できるので、外見的には従来の金属担体３と同じであっ
ても、平坦な金属箔４と波状の金属箔５の抵抗値が実質
的に等しく、本発明の作用効果を奏するものを製作する
ことができる。Further, as a fifth embodiment, although not shown, the material of the flat metal foil 4 and the material of the corrugated metal foil 5 are made different, and the specific resistance r a and the specific resistance r b are different from each other. The resistance values of the two metal foils 4 and 5 can be made uniform by giving a difference to. It is clear from the conditional expression (3) that this is possible. For example, (3)
In the formula, if the widths W a and W b and the thicknesses t a and t b of the flat metal foil 4 and the corrugated metal foil 5 are the same, the formula (3) can be simply expressed as r a · L a = Since r b · L b (10), r a = r b · L b / L a (11) r b = r a · L a / L b (12) is obtained, as described above. Since the value of L a / L b or its reciprocal L b / L a is determined by the shape of the corrugated metal foil 5, the values to be taken for the specific resistances r a and r b are also determined. It is only necessary to select two kinds of materials having a specific composition showing such a specific resistance. Even if it belongs to heat-resistant and corrosion-resistant stainless steel, the specific resistance can be changed by performing an operation such as increasing or decreasing a specific contained substance or adding a different type of substance to one side. Although the same as the conventional metal carrier 3, the flat metal foil 4 and the corrugated metal foil 5 have substantially the same resistance value, and the one having the effect of the present invention can be manufactured.
【００２６】以上に説明した第１実施例〜第５実施例
は、それぞれ単独に実施することができるほか、２つ或
いはそれ以上のものを組み合わせて実施することもでき
る。図９に示した第６実施例は、平坦な金属箔４にスリ
ット１６と孔１７を共に設けた例であって、図中の破線
は、平坦な金属箔４に対して接合される波状の金属箔５
の溶接点を例示したものである。The first to fifth embodiments described above can be carried out independently, or in combination of two or more. The sixth embodiment shown in FIG. 9 is an example in which the slit 16 and the hole 17 are both provided in the flat metal foil 4, and the broken line in the figure indicates a wavy shape that is joined to the flat metal foil 4. Metal foil 5
Is an example of the welding points of.
【００２７】[0027]
【発明の効果】本発明によれば、簡単な手段によって金
属担体を構成する平坦な金属箔と波状の金属箔の発熱量
を均等に揃え、金属担体内に均一な温度分布を実現する
ことができるので、金属担体全体の温度を無理なく急上
昇させることが可能になり、触媒の暖機過程において浄
化機能をむらなく高めて、迅速に触媒を活性化させるこ
とができる。その結果、未処理のガスを放出する期間及
び量が減少し、金属担体触媒装置の浄化性能を向上させ
て、信頼性も高めることができる。According to the present invention, the calorific values of the flat metal foil and the corrugated metal foil forming the metal carrier can be made uniform by a simple means to realize a uniform temperature distribution in the metal carrier. As a result, the temperature of the entire metal carrier can be raised rapidly without any difficulty, the purifying function can be evenly enhanced in the catalyst warm-up process, and the catalyst can be rapidly activated. As a result, the period and amount of untreated gas released are reduced, the purification performance of the metal-supported catalyst device can be improved, and the reliability can be improved.
【図１】本発明の第１実施例における金属担体の一部を
拡大して示す正面図である。FIG. 1 is an enlarged front view showing a part of a metal carrier according to a first embodiment of the present invention.
【図２】金属担体を展開して示す斜視図である。FIG. 2 is a perspective view showing a developed metal carrier.
【図３】完成した金属担体の斜視図である。FIG. 3 is a perspective view of a completed metal carrier.
【図４】付帯部分を含む金属担体触媒装置の全体構造を
例示する縦断面図である。FIG. 4 is a vertical cross-sectional view illustrating the overall structure of a metal-supported catalyst device including an accessory portion.
【図５】従来の金属担体触媒装置の問題点を示す縦断面
図である。FIG. 5 is a vertical sectional view showing a problem of a conventional metal-supported catalyst device.
【図６】本発明の第２実施例として金属担体の一部を示
す斜視図である。FIG. 6 is a perspective view showing a part of a metal carrier as a second embodiment of the present invention.
【図７】本発明の第３実施例として金属担体の一部を示
す斜視図である。FIG. 7 is a perspective view showing a part of a metal carrier as a third embodiment of the present invention.
【図８】本発明の第４実施例として金属担体の一部を示
す斜視図である。FIG. 8 is a perspective view showing a part of a metal carrier as a fourth embodiment of the present invention.
【図９】本発明の第６実施例として金属担体の一部を示
す斜視図である。FIG. 9 is a perspective view showing a part of a metal carrier as a sixth embodiment of the present invention.
１…金属担体触媒装置 ２…外筒 ２’…ケーシング ３…金属担体 ４…平坦な金属箔 ５…波状の金属箔 ６…中心電極 ７…帯状体 ８…電源 １１…排気ガス １３…主触媒担体 １６…スリット １７…孔 DESCRIPTION OF SYMBOLS 1 ... Metal carrier catalyst device 2 ... Outer cylinder 2 '... Casing 3 ... Metal carrier 4 ... Flat metal foil 5 ... Wavy metal foil 6 ... Center electrode 7 ... Strip 8 ... Power supply 11 ... Exhaust gas 13 ... Main catalyst carrier 16 ... Slit 17 ... Hole
フロントページの続き (72)発明者 渡辺 聖彦 愛知県西尾市下羽角町岩谷14番地 株式会 社日本自動車部品総合研究所内 (72)発明者 吉永 融 愛知県西尾市下羽角町岩谷14番地 株式会 社日本自動車部品総合研究所内 (72)発明者 篠原 幸弘 愛知県西尾市下羽角町岩谷14番地 株式会 社日本自動車部品総合研究所内 (72)発明者 吉▲崎▼ 康二 愛知県豊田市トヨタ町１番地 トヨタ自動 車株式会社内 (72)発明者 小倉 義次 愛知県豊田市トヨタ町１番地 トヨタ自動 車株式会社内Front page continuation (72) Inventor Yoshihiko Watanabe 14 Iwatani Shimohakaku-cho, Nishio-shi, Aichi Japan Auto Parts Research Institute, Inc. (72) Inventor Toru Yoshinaga 14 Iwatani Shimohakaku-cho, Nishio-shi, Aichi Japan Automobile Co., Ltd. Parts Research Laboratory (72) Inventor Yukihiro Shinohara 14 Iwatani, Shimohakaku-cho, Nishio-shi, Aichi Japan Auto Parts Research Institute (72) Inventor Yoshi ▲ ▼ ▼ Koji 1 Toyota-cho, Aichi Prefecture Toyota Automobile Incorporated (72) Inventor Yoshitsugu Ogura 1 Toyota-cho, Toyota-shi, Aichi Toyota Automobile Co., Ltd.
Claims (2)
状の中心電極の周りに取り付け、それらが交互に重なり
合うように前記中心電極の周りに渦巻き状に巻き付ける
ことにより、ハニカム状に形成された金属担体を備えて
いる金属担体触媒装置において、前記平坦な金属箔と前
記波状の金属箔の電気抵抗の値が、実質的に同じ大きさ
になるように構成されていることを特徴とする通電加熱
可能な金属担体触媒装置。1. A honeycomb shape is formed by attaching one ends of a flat metal foil and a corrugated metal foil around a rod-shaped center electrode and spirally winding them around the center electrode so that they overlap with each other. In the metal-supported catalyst device including the metal support, the electric resistance values of the flat metal foil and the corrugated metal foil are configured to have substantially the same magnitude. A metal-supported catalyst device capable of electrically heating.
りも狭くされていることによって、前記平坦な金属箔と
前記波状の金属箔の電気抵抗の値が、実質的に同じ大き
さになるように構成されていることを特徴とする請求項
１に記載された通電加熱可能な金属担体触媒装置。2. The flat metal foil has a width smaller than that of the corrugated metal foil, so that the electric resistance values of the flat metal foil and the corrugated metal foil are substantially the same. The metal-supported catalyst device according to claim 1, wherein the metal-supported catalyst device is capable of being electrically heated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4042564A JPH05237396A (en) | 1992-02-28 | 1992-02-28 | Catalyst device with metal carrier capable of electric heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4042564A JPH05237396A (en) | 1992-02-28 | 1992-02-28 | Catalyst device with metal carrier capable of electric heating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05237396A true JPH05237396A (en) | 1993-09-17 |
Family
ID=12639550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4042564A Withdrawn JPH05237396A (en) | 1992-02-28 | 1992-02-28 | Catalyst device with metal carrier capable of electric heating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05237396A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5529759A (en) * | 1993-12-21 | 1996-06-25 | Toyota Jidosha Kabushiki Kaisha | Electrically heated catalytic converter for an engine |
| US5672324A (en) * | 1995-02-17 | 1997-09-30 | Nippon Soken, Inc. | Electrically heatable honeycomb body of a catalytic converter equipped in an exhaust system of an internal combustion engine |
| DE102011051605A1 (en) * | 2011-07-06 | 2013-01-24 | Dbk David + Baader Gmbh | Heating device used for heating relatively large volume of e.g. intake air of internal combustion engine, has heat conductor strips that are repeatedly deflected transversely to longitudinal extension direction |
-
1992
- 1992-02-28 JP JP4042564A patent/JPH05237396A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5529759A (en) * | 1993-12-21 | 1996-06-25 | Toyota Jidosha Kabushiki Kaisha | Electrically heated catalytic converter for an engine |
| US5672324A (en) * | 1995-02-17 | 1997-09-30 | Nippon Soken, Inc. | Electrically heatable honeycomb body of a catalytic converter equipped in an exhaust system of an internal combustion engine |
| DE102011051605A1 (en) * | 2011-07-06 | 2013-01-24 | Dbk David + Baader Gmbh | Heating device used for heating relatively large volume of e.g. intake air of internal combustion engine, has heat conductor strips that are repeatedly deflected transversely to longitudinal extension direction |
| DE102011051605A8 (en) * | 2011-07-06 | 2013-02-28 | Dbk David + Baader Gmbh | heater |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4540283B2 (en) | Exhaust gas purification device with heating element | |
| US4976929A (en) | Electrically heated catalytic converter | |
| US5149508A (en) | Parallel path catalytic converter | |
| US5170624A (en) | Composite catalytic converter | |
| JP3334898B2 (en) | Exhaust gas purification device | |
| US5240682A (en) | Reinforced corrugated thin metal foil strip useful in a catalytic converter core, a catalytic converter core containing said strip and an electrically heatable catalytic converter containing said core | |
| JPH08103664A (en) | Honeycomb body and catalytic converter having catalyst carrier consisting of the honeycomb body | |
| US5651088A (en) | Resistive honeycomb heater having locally quickly heated regions for use in an exhaust gas purification system | |
| JP2997805B2 (en) | Honeycomb heater and exhaust gas purification device using the same | |
| JP3334897B2 (en) | Exhaust gas purification device | |
| JPH05237396A (en) | Catalyst device with metal carrier capable of electric heating | |
| JPH0681638A (en) | Electrically heated catalyst device | |
| JPH05220405A (en) | Electrothermal type metal carrier catalyst device | |
| EP0604868A1 (en) | Electrically heating catalytic apparatus | |
| JPH03245851A (en) | Metal support of catalytic converter and its preparation | |
| JPH0780321A (en) | Electric heating metal honeycomb body | |
| JPH05220404A (en) | Electrothermal type metal carrier catalyst device | |
| JPH03246315A (en) | Catalutic comverter | |
| JP3269646B2 (en) | Exhaust gas purification device | |
| JP3193426B2 (en) | Exhaust gas purification device | |
| JP3260898B2 (en) | Electrically heated catalytic converter | |
| JPH0719035A (en) | Partially heating type catalytic converter | |
| JPH07289914A (en) | Core element useful for converter of combination electric heating-ignition type | |
| JPH06218287A (en) | Exhaust gas purifying device | |
| JPH05168946A (en) | Energized thermal catalytic device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990518 |