JP4863366B2 - Element case of reformer - Google Patents

Element case of reformer Download PDF

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JP4863366B2
JP4863366B2 JP2006161689A JP2006161689A JP4863366B2 JP 4863366 B2 JP4863366 B2 JP 4863366B2 JP 2006161689 A JP2006161689 A JP 2006161689A JP 2006161689 A JP2006161689 A JP 2006161689A JP 4863366 B2 JP4863366 B2 JP 4863366B2
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dish
partition plate
container forming
element case
reformer
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JP2007326764A (en
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勇 武長
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株式会社長府製作所
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    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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Description

本発明は、燃料電池用の改質器のエレメントの構造に関する。   The present invention relates to the structure of a reformer element for a fuel cell.

都市ガス又はＬＰガス（以下「都市ガス等」という。）を利用して発電を行う燃料電池では、都市ガス等から水素を生成し、生成された水素と空気を反応させることによって発電を行う。この際、都市ガスから水素を生成する際に改質器が使用される。改質器は、都市ガス等と水を触媒の存在下で反応させて水素の生成を行う。   In a fuel cell that generates power using city gas or LP gas (hereinafter referred to as “city gas”), power is generated by generating hydrogen from the city gas and reacting the generated hydrogen with air. At this time, a reformer is used when producing hydrogen from city gas. The reformer reacts city gas and water with water in the presence of a catalyst to generate hydrogen.

改質器をその形状により分類すると、円筒型改質器と平板型改質器とに分けられる。円筒型改質器は、円筒形のケース（反応容器）内に触媒その他の反応装置を収容したものである（例えば、特許文献１，２参照）。従来の改質器の殆どは、この円筒型改質器が使用されている。一方、平板型改質器は、相対向する平坦な広面を有する中空扁平箱状のケース（反応容器）内に触媒その他の反応装置を収容したものである（例えば、特許文献３参照）。以下、本明細書においては、平板型改質器を取り扱う。   If the reformers are classified according to their shapes, they can be divided into cylindrical reformers and flat plate reformers. The cylindrical reformer contains a catalyst and other reaction devices in a cylindrical case (reaction vessel) (see, for example, Patent Documents 1 and 2). Most of the conventional reformers use this cylindrical reformer. On the other hand, a flat plate type reformer is one in which a catalyst and other reaction devices are accommodated in a hollow flat box-like case (reaction vessel) having flat and wide surfaces facing each other (see, for example, Patent Document 3). Hereinafter, in this specification, a flat plate type reformer is handled.

図７は、特許文献３に記載の平板型改質器である。平板型改質器１００は、改質触媒や酸化触媒が充填された複数のエレメントケース１０１〜１１０、断熱材１１１〜１１３、排熱回収用熱交換器１１４、及びヒータ１１５〜１１８を備えている。   FIG. 7 shows a flat plate reformer described in Patent Document 3. The flat plate reformer 100 includes a plurality of element cases 101 to 110 filled with a reforming catalyst and an oxidation catalyst, heat insulating materials 111 to 113, a heat exchanger 114 for exhaust heat recovery, and heaters 115 to 118. .

この平板型改質器１００は、原料ガスを水と触媒下で反応させることにより、原料ガスを改質し、水素リッチな変成処理ガスを生成する装置である。原料処理ガスは、まず、エレメントケース１０６→１０５→１０４（右側室）の順に送られて、加熱されると共に各ケース内の脱硫触媒により脱硫が行われる。その後、改質を行うエレメントケース１０２の右側室（改質処理室）に送入される。   The flat plate reformer 100 is a device that reforms a raw material gas by reacting the raw material gas with water under a catalyst to generate a hydrogen-rich shift gas. The raw material processing gas is first sent in the order of the element case 106 → 105 → 104 (right chamber), heated, and desulfurized by the desulfurization catalyst in each case. After that, it is sent to the right chamber (reforming treatment chamber) of the element case 102 for reforming.

一方、ファン１１９により導入される空気は、排熱回収用熱交換器１１４において、燃料電池１２２からの排ガスと共に加熱され、熱供給のために改質を行うエレメントケース１０２の左側室（燃焼室）に送入される。燃焼室において、排ガスが燃焼されてエレメントケース１０２の右側室（改質処理室）への与熱がされる。その後、エレメントケース１０１の左側室を通って原料水へ与熱した後、エレメントケース１０８の右側室を通って変成処理ガスに予熱し、さらに排熱回収用熱交換器１１４を通ってファン１１９から送入される空気と燃料電池１２２からの排ガスに与熱した後に排出される。   On the other hand, the air introduced by the fan 119 is heated together with the exhaust gas from the fuel cell 122 in the exhaust heat recovery heat exchanger 114 and is reformed for heat supply in the left chamber (combustion chamber) of the element case 102. To be sent to. In the combustion chamber, the exhaust gas is combusted to heat the right chamber (reforming treatment chamber) of the element case 102. Thereafter, the raw material water is heated through the left side chamber of the element case 101, then preheated to the transformation gas through the right side chamber of the element case 108, and further from the fan 119 through the exhaust heat recovery heat exchanger 114. The heated air and exhaust gas from the fuel cell 122 are heated and discharged.

また、ポンプ１２０により送水される原料水は、熱交換器１２１で加熱された後、エレメントケース１０１の右側室内に送られてヒータ１１５と前述の燃焼ガスにより加熱され気化される。生成される水蒸気は、エレメントケース１０４の右側室に送入され、原料ガスと混合された後に、改質を行うエレメントケース１０２の右側室に送入される。エレメントケース１０２の右側室内には改質触媒が充填されており、水蒸気と原料ガスとを反応させることにより、水素ガスと一酸化炭素を生成する。改質により生成された水素リッチな変成処理ガスは、エレメントケース１０３→１０４（左側室）→１０７→１０８（左側室）→１０９→１１０の順に送られて、各ケース内の改質触媒の存在下でさらに改質が行われる。そして、燃料電池１２２内のセルスタックに送られて発電が行われる。   In addition, the raw water supplied by the pump 120 is heated by the heat exchanger 121 and then sent to the right chamber of the element case 101 where it is heated and vaporized by the heater 115 and the combustion gas described above. The generated steam is fed into the right chamber of the element case 104, mixed with the raw material gas, and then fed into the right chamber of the element case 102 for reforming. The right side chamber of the element case 102 is filled with a reforming catalyst, and hydrogen gas and carbon monoxide are generated by reacting water vapor with the raw material gas. The hydrogen-rich shift gas generated by the reforming is sent in the order of the element case 103 → 104 (left chamber) → 107 → 108 (left chamber) → 109 → 110, and the presence of the reforming catalyst in each case Further reforming takes place below. And it is sent to the cell stack in the fuel cell 122 to generate power.

エレメントケース１０１，１０２，１０４〜１１０は、平坦な広面を有する中空板状のケースであり、中央に左右の室を離隔する仕切板（伝熱板）が設けられている。図８にエレメントケース１０２の外観斜視図を示す。   The element cases 101, 102, and 104 to 110 are hollow plate-like cases having a flat wide surface, and a partition plate (heat transfer plate) that separates the left and right chambers is provided at the center. FIG. 8 shows an external perspective view of the element case 102.

エレメントケース１０２は、２つの皿状容器形成部材１３１ａ，１３１ｂが開口面を向かい合わせ、仕切板１３２を挟んで衝合された構成を有する。皿状容器形成部材１３１ａ，１３１ｂの周縁には鍔部１３３ａ，１３３ｂが形成されている。仕切板１３２は、この鍔部１３３ａ，１３３ｂの間に挟持されている。仕切板１３２を挟んで右側の皿状容器形成部材１３１ａの内部に形成される室が改質処理室１３４、左側の皿状容器形成部材１３１ｂの内部に形成される室が燃焼室１３５である。   The element case 102 has a configuration in which two dish-like container forming members 131a and 131b face each other with the opening surfaces facing each other and sandwich the partition plate 132 therebetween. On the periphery of the dish-like container forming members 131a and 131b, flanges 133a and 133b are formed. The partition plate 132 is sandwiched between the flanges 133a and 133b. A chamber formed inside the right dish-like container forming member 131a across the partition plate 132 is a reforming process chamber 134, and a chamber formed inside the left-side dish-like container forming member 131b is a combustion chamber 135.

改質処理室１３４の上部には、改質触媒の投入及び原料ガスの供給を行うための送入管１３６が取り付けられており、送入管１３６の側方に分岐して、原料ガスを供給するための原料ガス供給口１３７が設けられている。また、送入管１３６の上端開口部は、触媒投入口１３８となっており、ここから改質処理室１３４内に改質触媒を投入する。
特開２００３−１５１６０７号公報 特開平９−３０９７０２号公報 特開２００４−５９３５９号公報 An inlet pipe 136 for supplying the reforming catalyst and supplying the raw material gas is attached to the upper part of the reforming processing chamber 134 and branches to the side of the inlet pipe 136 to supply the raw material gas. A raw material gas supply port 137 is provided. The upper end opening of the feed pipe 136 serves as a catalyst inlet 138 from which the reforming catalyst is introduced into the reforming treatment chamber 134.
JP 2003-151607 A JP-A-9-309702 JP 2004-59359 A

上述のような平板型改質器のエレメントケースを製造する場合、皿状容器形成部材１３１ａ，１３１ｂに仕切板１３２を挟持した状態で、鍔部１３３ａ，１３３ｂの外周四方の端面を溶接する。   When manufacturing the element case of the flat plate type reformer as described above, the end faces of the outer peripheral four sides of the flanges 133a and 133b are welded with the partition plate 132 sandwiched between the dish-like container forming members 131a and 131b.

しかしながら、溶接時において、皿状容器形成部材１３１ａ，１３１ｂや仕切板１３２が入熱により膨張し歪みが発生する問題がある。この歪みにより、仕切板１３２の左右の室の容積が変わる。室の容積が変わると、各室内に投入される触媒の量や燃焼室の容積が変わり、設計通りの改質性能・燃焼性能を得ることができないという問題が生じる。   However, at the time of welding, there is a problem that the dish-shaped container forming members 131a and 131b and the partition plate 132 are expanded due to heat input and distortion occurs. Due to this distortion, the volume of the left and right chambers of the partition plate 132 changes. When the volume of the chamber changes, the amount of catalyst introduced into each chamber and the volume of the combustion chamber change, resulting in a problem that the reforming performance and combustion performance as designed cannot be obtained.

そこで、本発明の目的は、製造の際に生じる、皿状容器形成部材や仕切板の歪みを防止することが可能な改質器のエレメントケースを提供することにある。   Accordingly, an object of the present invention is to provide an element case for a reformer capable of preventing distortion of a dish-shaped container forming member and a partition plate that occurs during production.

本発明に係る改質器のエレメントケースの第１の構成は、扁平皿形に形成され開口部周縁に鍔部が形成された第１及び第２の皿状容器形成部材を、開口面を向かい合わせた状態で前記鍔部同士を合致させ、扁平箱を構成してなる外側ケースと、前記両皿状容器形成部材の前記鍔部に挟持され、前記外側ケースの内部空間を左右に仕切る仕切板と、を備えた改質器のエレメントケースであって、前記鍔部により挟持された前記仕切板の周縁部分よりも内側の領域に、凹凸部が形成されていることを特徴とする。 The first structure of the element case of the reformer according to the present invention is such that the first and second dish-like container forming members formed in a flat dish shape and having a flange formed on the periphery of the opening face the opening surface. The outer case formed by matching the flanges in the combined state to form a flat box, and the partition plate sandwiched between the flanges of the both dish-shaped container forming members and partitioning the inner space of the outer case to the left and right And an uneven portion is formed in a region inside the peripheral portion of the partition plate sandwiched between the flanges.

この構成によれば、エレメントケースを製造するにあたり、第１及び第２の皿状容器形成部材に仕切板を挟持して鍔部外縁を溶接するときに、入熱により仕切板又は両皿状容器形成部材が膨張しても、仕切板の周縁部分よりも内側の領域に形成された凹凸部が、仕切板や両皿状容器形成部材の体積膨張を吸収する。また、凹凸部の曲折部分が力骨（リブ）として機能し、平坦部の曲げに対する強度が補強され、仕切板や両皿状容器形成部材の撓みが防止される。これにより、エレメントケースの製造時に、仕切板や両皿状容器形成部材の撓みによるケースの歪みを防止することができる。
According to this configuration, when manufacturing the element case, when the partition plate is sandwiched between the first and second dish-shaped container forming members and the outer edge of the buttock is welded, the partition plate or both dish-shaped containers are heated. Even if the forming member expands, the concavo-convex portion formed in the region inside the peripheral portion of the partition plate absorbs the volume expansion of the partition plate and the both-plate shaped container forming member. Further, the bent portion of the concavo-convex portion functions as a skeleton (rib), the strength against bending of the flat portion is reinforced, and bending of the partition plate and the both dish-like container forming members is prevented. Thereby, at the time of manufacture of an element case, distortion of a case by the bending of a partition plate or a both-plate-shaped container formation member can be prevented.

本発明に係る改質器のエレメントケースの第２の構成は、前記第１の構成において、前記凹凸部がリブであることを特徴とする。   A second configuration of the element case of the reformer according to the present invention is characterized in that, in the first configuration, the uneven portion is a rib.

これにより、両皿状容器形成部材や仕切板の平坦領域の曲げに対する強度が補強され、仕切板や両皿状容器形成部材の撓みが防止される。従って、エレメントケースの製造時に、仕切板や両皿状容器形成部材の撓みによるケースの歪みを防止することができる。   Thereby, the intensity | strength with respect to the bending of the flat area | region of a both plate-shaped container formation member or a partition plate is reinforced, and the bending of a partition plate or a both plate-shaped container formation member is prevented. Therefore, it is possible to prevent the case from being distorted due to the bending of the partition plate and the both-plate-like container forming member during the manufacture of the element case.

本発明に係る改質器のエレメントケースの第３の構成は、前記第１又は２の構成において、前記凹凸部は、前記仕切板により仕切られた前記外側ケース内の左右の内部空間の体積が等しくなるように形成されていることを特徴とする。

According to a third configuration of the element case of the reformer according to the present invention, in the first or second configuration, the uneven portion has a volume of left and right internal spaces in the outer case partitioned by the partition plate. It is formed so that it may become equal.

この構成により、仕切板の両側の外側ケース内の室の容積は、仕切板の凹凸部によって変化しないため、設計通りの容積が得られる。従って、各室内に投入される触媒の量は、仕切板の凹凸部の影響で変化することがないため、設計通りの改質性能を得ることができる。   With this configuration, the volume of the chamber in the outer case on both sides of the partition plate is not changed by the uneven portions of the partition plate, so that the designed volume can be obtained. Therefore, the amount of the catalyst put into each chamber does not change due to the influence of the uneven portions of the partition plate, so that the reforming performance as designed can be obtained.

本発明に係る改質器のエレメントケースの第４の構成は、前記第１乃至３の何れかの構成において、前記鍔部により挟持された前記仕切板の周縁部分よりも内側の領域に形成された前記凹凸部の少なくとも１つは、その外側周縁が、前記周縁部分の至近位置となるように形成されていることを特徴とする。   According to a fourth configuration of the element case of the reformer according to the present invention, in any one of the first to third configurations, the reformer element case is formed in a region inside the peripheral portion of the partition plate sandwiched by the flange portion. Further, at least one of the concavo-convex portions is formed such that an outer peripheral edge thereof is a position close to the peripheral edge portion.

この構成により、凹凸部を仕切板の位置決めのためのリブとしての役割も持たせることができる。すなわち、凹凸部により仕切板のずれが規制されるため、仕切板を両皿状容器形成部材に挟んだ状態で溶接する際に、仕切板が位置ずれを起こすことを防止できる。   With this configuration, the uneven portion can also serve as a rib for positioning the partition plate. That is, since the displacement of the partition plate is regulated by the uneven portion, it is possible to prevent the partition plate from being displaced when welding with the partition plate sandwiched between both dish-shaped container forming members.

以上のように、本発明によれば、仕切板の周縁部分よりも内側の領域や両皿状容器形成部材の皿底部の平坦領域には凹凸部を形成したことにより、エレメントケースの製造時に、仕切板や両皿状容器形成部材の撓みによるケース容積の変化を防止することができる。これにより、エレメントケースの製造不良を減少させ、歩留まりを改善することができる。   As described above, according to the present invention, by forming an uneven portion in the inner region of the peripheral portion of the partition plate and the flat region of the dish bottom of both dish-shaped container forming members, when manufacturing the element case, It is possible to prevent a change in the case volume due to bending of the partition plate and the both dish-shaped container forming members. Thereby, the manufacturing defect of an element case can be reduced and a yield can be improved.

以下、本発明を実施するための最良の形態について、図面を参照しながら説明する。   The best mode for carrying out the present invention will be described below with reference to the drawings.

図１は、平板型改質器の全体構成を表す斜視図である。平板型改質器１は、複数の扁平箱状のエレメントケース２〜１１が広面を向かい合わせた状態で重ね合わせて配置されている。各エレメントケース２〜１１の間は、原料ガス、空気、水、又は変成処理ガスが送られる配管により接続される。   FIG. 1 is a perspective view showing the overall configuration of a flat plate reformer. The flat plate reformer 1 is arranged such that a plurality of flat box-shaped element cases 2 to 11 are overlapped with their wide surfaces facing each other. The element cases 2 to 11 are connected by piping through which raw material gas, air, water, or modified gas is sent.

図２は、図１のエレメントケースの一つを取り出したものである。図３は、図２のエレメントケースの分解斜視図である。   FIG. 2 shows one of the element cases shown in FIG. FIG. 3 is an exploded perspective view of the element case of FIG.

エレメントケース２０は、仕切板２３を挟んで２つの扁平皿形の皿状容器形成部材２１，２２が、皿開口面を向かい合わせた状態で衝合されている。皿状容器形成部材２１，２２の周縁部には、鍔部２１ａ，２２ａが形成されている。鍔部２１ａ，２２ａは、皿状容器形成部材２１，２２の周縁を折り曲げて、鍔面が皿状容器形成部材２１，２２の皿底面（広面）２１ｂ，２２ｂに対して平行な面となるように形成されている。   In the element case 20, two flat dish-shaped container forming members 21 and 22 are abutted with the partition opening 23 facing each other across the partition plate 23. On the peripheral edge of the dish-like container forming members 21 and 22, flanges 21a and 22a are formed. The flange portions 21a and 22a bend the peripheral edges of the dish-like container forming members 21 and 22 so that the saddle surfaces are parallel to the dish bottom surfaces (wide surfaces) 21b and 22b of the dish-like container forming members 21 and 22. Is formed.

鍔部２１ａ，２２ａの外郭辺は同型であり、また、仕切板２３の外郭辺は鍔部２１ａ，２２ａの外郭辺とほぼ同型乃至は鍔部２１ａ，２２ａの外郭辺よりも僅かに大きく形成されている。これら鍔部２１ａ，２２ａの外郭辺及び仕切板２３の外郭辺は、溶接により溶着されている。仕切板２３は、皿状容器形成部材２１，２２により形成されるエレメントケース２０の室内を左右の室に離隔するとともに、左右の室間で伝熱を行うためのものである。   The outer sides of the flanges 21a and 22a are the same type, and the outer side of the partition plate 23 is substantially the same as the outer sides of the flanges 21a and 22a or slightly larger than the outer sides of the flanges 21a and 22a. ing. The outer sides of the flanges 21a and 22a and the outer side of the partition plate 23 are welded together by welding. The partition plate 23 separates the chamber of the element case 20 formed by the dish-shaped container forming members 21 and 22 into left and right chambers and conducts heat between the left and right chambers.

また、皿状容器形成部材２１，２２の皿底面２１ｂ，２２ｂの中央には、円形の触媒充填口２４が形成されている。触媒充填口２４は、皿状容器形成部材２１，２２と仕切板２３とで形成される室内に触媒を投入するための穴である。   A circular catalyst filling port 24 is formed at the center of the dish bottom surfaces 21b and 22b of the dish-shaped container forming members 21 and 22. The catalyst filling port 24 is a hole for introducing the catalyst into the chamber formed by the dish-like container forming members 21 and 22 and the partition plate 23.

皿状容器形成部材２１，２２の皿内には、それぞれ２つの通気性仕切部材２５，２５が設けられている。通気性仕切部材２５，２５は、皿状容器形成部材２１，２２の対向する２つの短辺の付近に、各短辺に平行に設置されている。通気性仕切部材２５，２５は、パンチングメタルにより構成されており、通気性が確保されている。この通気性仕切部材２５，２５は、短辺の側壁に形成されるガス通気口２６から触媒が溢れ出さないように皿内に触媒を保持するとともに、ガス通気口２６から送入されるガスを一様な流れとして触媒に送入するための空間を作る役割を担う。   Two breathable partition members 25 and 25 are provided in the dishes of the dish-like container forming members 21 and 22, respectively. The air-permeable partition members 25 and 25 are installed in parallel with each short side in the vicinity of two opposing short sides of the dish-like container forming members 21 and 22. The air-permeable partition members 25 and 25 are made of punched metal, and air permeability is ensured. The air-permeable partition members 25 and 25 hold the catalyst in the dish so that the catalyst does not overflow from the gas vent 26 formed on the side wall of the short side, and the gas fed from the gas vent 26. It plays the role of creating a space for feeding the catalyst as a uniform flow.

本実施例１においては、皿状容器形成部材２１の皿底面２１ｂには、凹凸状のリブ２１ｃ，２１ｄが３つずつ形成されている。リブ２１ｃ，２１ｄは皿底面２１ｂをプレス加工することにより形成されている。リブ２１ｃは、皿底面２１ｂの内側から外側に（皿内から見て）凹状に形成されたリブであり、リブ２１ｄは、皿底面２１ｂの外側から内側に（皿内から見て）凸状に形成されたリブである。リブ２１ｃ，２１ｄはすべて同形であり、リブ２１ｃにより皿底面２１ｂ内に形成される凹溝状の空間の体積と、リブ２１ｄにより皿底面２１ｂ内に形成される凸状体の体積とは等しい。   In the first embodiment, three concave and convex ribs 21 c and 21 d are formed on the dish bottom surface 21 b of the dish-shaped container forming member 21. The ribs 21c and 21d are formed by pressing the dish bottom surface 21b. The rib 21c is a rib formed in a concave shape from the inside of the dish bottom surface 21b (as viewed from inside the dish), and the rib 21d is a convex shape from the outside to the inside (as viewed from inside the dish) of the dish bottom surface 21b. It is the formed rib. The ribs 21c and 21d are all the same shape, and the volume of the concave groove-shaped space formed in the dish bottom 21b by the rib 21c is equal to the volume of the convex body formed in the dish bottom 21b by the rib 21d.

同様に、皿状容器形成部材２２の皿底面２２ｂには、同型の凹凸状のリブ２２ｃ，２２ｄが３つずつ形成されている。   Similarly, three concave and convex ribs 22 c and 22 d of the same type are formed on the dish bottom surface 22 b of the dish-shaped container forming member 22.

さらに、仕切板２３の鍔部２１ａ，２２ａにより挟持される周縁部分よりも内側の平坦領域２３ａには、凹凸状のリブ２３ｂ，２３ｃが３つずつ形成されている。リブ２３ｂ，２３ｃは仕切板２３をプレス加工することにより形成されている。
リブ２３ｂは、仕切板２３の表側から裏側に凹状に形成されたリブであり、リブ２３ｃは、仕切板２３の裏側から表側に凹状に形成されたリブである。リブ２３ｂ，２３ｃはすべて同形であり、リブ２３ｂの体積と、リブ２３ｃの体積とは等しい。 Further, three uneven ribs 23b and 23c are formed in the flat region 23a on the inner side of the peripheral portion sandwiched between the flange portions 21a and 22a of the partition plate 23. The ribs 23b and 23c are formed by pressing the partition plate 23.
The rib 23b is a rib formed in a concave shape from the front side to the back side of the partition plate 23, and the rib 23c is a rib formed in a concave shape from the back side of the partition plate 23 to the front side. The ribs 23b and 23c are all the same shape, and the volume of the rib 23b is equal to the volume of the rib 23c.

このエレメントケース２０を組み立てる場合、仕切板２３の周縁付近を、皿状容器形成部材２１，２２の鍔部２１ａ，２２ａにより挟持して、この状態で鍔部２１ａ，２２ａ及び仕切板２３の外縁端部を溶接する。この際、入熱により皿状容器形成部材２１，２２の皿底面２１ｂ，２２ｂ及び仕切板２３の平坦領域２３ａが膨張するが、リブ２１ｃ，２１ｄ、リブ２２ｃ，２２ｄ、及びリブ２３ｂ，２３ｃによって部材の膨張による力が吸収される。また、各リブは、皿状容器形成部材２１，２２の皿底面２１ｂ，２２ｂ及び仕切板２３の平坦領域２３ａを、撓み方向の力に対して補強する力骨としても作用し、皿底面２１ｂ，２２ｂ及び仕切板２３の歪みを防止する。従って、エレメントケース２０の製造時に、仕切板２３や両皿状容器形成部材２１，２２の歪みによるエレメントケース２０の容積の変化を防止することができる。   When the element case 20 is assembled, the vicinity of the periphery of the partition plate 23 is sandwiched between the flange portions 21a and 22a of the dish-like container forming members 21 and 22, and the outer edge ends of the flange portions 21a and 22a and the partition plate 23 in this state. Weld the parts. At this time, the bottom surfaces 21b and 22b of the dish-like container forming members 21 and 22 and the flat region 23a of the partition plate 23 expand due to heat input, but the members are formed by the ribs 21c and 21d, the ribs 22c and 22d, and the ribs 23b and 23c. The force due to the expansion of is absorbed. Each rib also acts as a skeleton for reinforcing the dish bottom surfaces 21b, 22b of the dish-like container forming members 21, 22 and the flat region 23a of the partition plate 23 against the force in the bending direction, The distortion of 22b and the partition plate 23 is prevented. Therefore, when the element case 20 is manufactured, it is possible to prevent a change in the volume of the element case 20 due to distortion of the partition plate 23 and the dish-like container forming members 21 and 22.

尚、本実施例で、各リブ（リブ２１ｃ，２１ｄ、リブ２２ｃ，２２ｄ、及びリブ２３ｂ，２３ｃ）の数は３としたが、本発明においては、リブの本数は特にこれに限られるものではない。また、リブの形状についても、図２，３に示したような形状に限られるものではなく、同形である必要もない。   In this embodiment, the number of ribs (ribs 21c, 21d, ribs 22c, 22d, and ribs 23b, 23c) is three. However, in the present invention, the number of ribs is not particularly limited to this. Absent. Also, the shape of the rib is not limited to the shape shown in FIGS. 2 and 3 and need not be the same shape.

図４は、本発明の実施例２に係るエレメントケースの断面図である。図５は、図４の皿状容器形成部材２１，２２の（ａ）正面図、（ｂ）Ａ−Ａ線矢視断面図、及び（ｃ）Ｂ−Ｂ線矢視断面図である。また、図６は、図４の仕切板２３の（ａ）正面図、（ｂ）Ａ−Ａ線矢視断面図、（ｃ）Ｂ−Ｂ線矢視断面図、及び（ｄ）Ｃ−Ｃ線矢視断面図である。   FIG. 4 is a cross-sectional view of an element case according to Embodiment 2 of the present invention. 5A is a front view, FIG. 5B is a cross-sectional view taken along line AA, and FIG. 5C is a cross-sectional view taken along line BB. Moreover, FIG. 6: (a) Front view of the partition plate 23 of FIG. 4, (b) AA arrow sectional drawing, (c) BB arrow sectional drawing, (d) CC FIG.

図４〜図６において、エレメントケース２０、皿状容器形成部材２１，２２、鍔部２１ａ，２２ａ、仕切板２３、及び触媒充填口２４は、図２，図３と同様であり、説明は省略する。   4 to 6, the element case 20, the dish-like container forming members 21 and 22, the flanges 21a and 22a, the partition plate 23, and the catalyst filling port 24 are the same as those in FIGS. To do.

本実施例２のエレメントケース２０においては、皿状容器形成部材２１，２２は、皿底面に凸部３１及び凹部３２が形成されている。凸部３１は、皿底面の外縁からその内側にかけて凹部３２を取り囲んで一定の幅Ｌ１で形成されている。   In the element case 20 of the second embodiment, the dish-like container forming members 21 and 22 are formed with a convex part 31 and a concave part 32 on the dish bottom surface. The convex portion 31 surrounds the concave portion 32 from the outer edge of the dish bottom surface to the inside thereof, and is formed with a certain width L1.

また、仕切板２３の板面には、周辺凹部４１、凸部４２、中央凹部４３、及び４つの凸状リブ４４が形成されている。仕切板２３の板面外縁から中央に向かって、平坦領域２３ａ、周辺凹部４１、凸部４２、中央凹部４３の順で形成されている。周辺凹部４１は、その外周が、４隅に切り欠きを持った矩形状であり、その４隅の切り欠き部分には、それぞれ凸状リブ４４が形成されている。この周辺凹部４１及び凸状リブ４４は、その外側周縁が、鍔部２１ａ，２２ａにより挟持された仕切板２３の周縁部分（すなわち平坦部分２３ａ）の至近位置となるように形成されている。このように形成することで、図４に示したように、周辺凹部４１及び凸状リブ４４の外側周縁が、皿状容器形成部材２１，２２の鍔部２１ａ，２２ａ内側の凹状の部分にちょうど嵌合し、皿状容器形成部材２１，２２と仕切板２３との位置決めが容易となる。   In addition, a peripheral concave portion 41, a convex portion 42, a central concave portion 43, and four convex ribs 44 are formed on the plate surface of the partition plate 23. A flat region 23 a, a peripheral concave portion 41, a convex portion 42, and a central concave portion 43 are formed in this order from the outer peripheral edge of the partition plate 23 toward the center. The outer periphery of the peripheral recess 41 has a rectangular shape with cutouts at four corners, and convex ribs 44 are formed at the cutout portions of the four corners. The peripheral concave portion 41 and the convex rib 44 are formed so that the outer peripheral edges thereof are close to the peripheral portion (that is, the flat portion 23a) of the partition plate 23 sandwiched between the flange portions 21a and 22a. By forming in this way, as shown in FIG. 4, the outer peripheral edges of the peripheral concave portion 41 and the convex rib 44 are exactly the concave portions inside the flange portions 21 a and 22 a of the dish-like container forming members 21 and 22. The plate-shaped container forming members 21 and 22 and the partition plate 23 can be easily positioned.

平板型改質器の全体構成を表す斜視図である。It is a perspective view showing the whole structure of a flat type reformer. 図１のエレメントケースの一つを取り出したものである。1. One of the element cases in FIG. 1 is taken out. 図２のエレメントケースの分解斜視図である。It is a disassembled perspective view of the element case of FIG. 本発明の実施例２に係るエレメントケースの断面図である。It is sectional drawing of the element case which concerns on Example 2 of this invention. 図４の皿状容器形成部材の（ａ）正面図、（ｂ）Ａ−Ａ線矢視断面図、及び（ｃ）Ｂ−Ｂ線矢視断面図である。It is (a) front view, (b) AA arrow directional cross-sectional view, and (c) BB line arrow directional cross-sectional view of the plate-shaped container formation member of FIG. 図４の仕切板の（ａ）正面図、（ｂ）Ａ−Ａ線矢視断面図、（ｃ）Ｂ−Ｂ線矢視断面図、及び（ｄ）Ｃ−Ｃ線矢視断面図である。5A is a front view, FIG. 4B is a cross-sectional view taken along line AA, FIG. 4C is a cross-sectional view taken along line BB, and FIG. 5D is a cross-sectional view taken along line CC. . 特許文献３に記載の平板型改質器である。This is a flat plate reformer described in Patent Document 3. 特許文献３に記載のエレメントケース１０２の外観斜視図を示す図である。It is a figure which shows the external appearance perspective view of the element case 102 of patent document 3. FIG.

符号の説明Explanation of symbols

１ 平板型改質器
２〜１１ エレメントケース
２０ エレメントケース
２１，２２ 皿状容器形成部材
２１ａ，２２ａ 鍔部
２１ｂ，２２ｂ 皿底面
２１ｃ，２１ｄ，２２ｃ，２２ｄ，２３ｂ，２３ｃ リブ
２３ 仕切板
２３ａ 平坦領域
２４ 触媒充填口
２５ 通気性仕切部材
２６ ガス通気口
３１ 凸部
３２ 凹部
４１ 周辺凹部
４２ 凸部
４３ 中央凹部
４４ 凸状リブ


DESCRIPTION OF SYMBOLS 1 Flat type reformer 2-11 Element case 20 Element case 21, 22 Dish-shaped container formation member 21a, 22a Gutter part 21b, 22b Dish bottom face 21c, 21d, 22c, 22d, 23b, 23c Rib 23 Partition plate 23a Flat area 24 Catalyst filling port 25 Breathable partition member 26 Gas vent port 31 Convex part 32 Concave part 41 Peripheral concave part 42 Convex part 43 Central concave part 44 Convex rib


Claims (2)

扁平皿形に形成され開口部周縁に鍔部が形成された第１及び第２の皿状容器形成部材を、開口面を向かい合わせた状態で前記鍔部同士を合致させ、扁平箱を構成してなる外側ケースと、
前記両皿状容器形成部材の前記鍔部に挟持され、前記外側ケースの内部空間を左右に仕切る仕切板と、を備えた改質器のエレメントケースであって、
前記鍔部により挟持された前記仕切板の周縁部分よりも内側の領域に、凹凸部が形成されており、
前記凹凸部は、その外側周縁が、前記第１又は第２の皿状容器形成部材の前記鍔部内側の凹状の部分にちょうど嵌合するように形成されていることを特徴とする改質器のエレメントケース。 A flat box is formed by matching the first and second dish-shaped container forming members formed in a flat dish shape and having a flange on the periphery of the opening, with the opening faces facing each other. An outer case,
A partition plate sandwiched between the flanges of the both dish-shaped container forming members and partitioning the inner space of the outer case into left and right, and a reformer element case,
An uneven portion is formed in a region inside the peripheral portion of the partition plate sandwiched between the flange portions,
The reformer is characterized in that an outer peripheral edge thereof is formed so as to fit exactly into a concave portion inside the flange of the first or second dish-like container forming member. Element case. 前記凹凸部は、前記仕切板により仕切られた前記外側ケース内の左右の内部空間の体積が等しくなるように形成されていることを特徴とする請求項１記載の改質器のエレメントケース。 The uneven portion may reformer element case according to claim 1, wherein the volume of the left and right of the inner space of the said partition said outer casing partitioned by plate is formed to be equal.
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