JPS6360319B2 - - Google Patents
Info
- Publication number
- JPS6360319B2 JPS6360319B2 JP14517684A JP14517684A JPS6360319B2 JP S6360319 B2 JPS6360319 B2 JP S6360319B2 JP 14517684 A JP14517684 A JP 14517684A JP 14517684 A JP14517684 A JP 14517684A JP S6360319 B2 JPS6360319 B2 JP S6360319B2
- Authority
- JP
- Japan
- Prior art keywords
- ceramic
- heat exchanger
- fluid flow
- flow path
- string
- 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.)
- Expired
Links
- 239000000919 ceramic Substances 0.000 claims description 28
- 239000012530 fluid Substances 0.000 claims description 18
- 239000003566 sealing material Substances 0.000 claims description 12
- 229910010293 ceramic material Inorganic materials 0.000 claims description 5
- 239000011162 core material Substances 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/04—Constructions of heat-exchange apparatus characterised by the selection of particular materials of ceramic; of concrete; of natural stone
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は高温の排ガスからの熱回収を効率良く
行うことができる大型のセラミツクス製熱交換器
に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a large-sized ceramic heat exchanger that can efficiently recover heat from high-temperature exhaust gas.
（従来の技術）
各種工業炉等から排出される排ガスからの熱回
収は省エネルギーの観点から広く行われていると
ころであり、特に高温の排ガスからの熱回収用と
して耐熱性に優れたセラミツクス製の熱交換器が
開発されている。このようなセラミツクス製熱交
換器の多くは内部に隔壁を介して加熱流体流路と
被加熱流体流路とが形成されたセラミツクス製の
熱交換体を用いたものであるが、セラミツクス製
造技術上の制限から大型の熱交換体を一体に製造
することができぬため、止むを得ず小型の熱交換
体を接合面にアスベスト板等のシール材を介在さ
せて接合したものが用いられていた。(Prior art) Heat recovery from exhaust gas discharged from various industrial furnaces, etc. is widely practiced from the perspective of energy conservation. An exchanger has been developed. Many of these ceramic heat exchangers use a ceramic heat exchanger body in which a heated fluid flow path and a heated fluid flow path are formed through partition walls, but due to ceramic manufacturing technology, Because it was not possible to manufacture large heat exchangers in one piece due to the limitations of .
（発明が開決しようとする問題点）
ところがこのような従来のセラミツクス製熱交
換器は、アスベスト板の耐熱限界を越える800℃
以上の温度条件下では使用できないうえ、セラミ
ツクス製の熱交換体の表面に凹凸があるために接
合面を完全にシールすることが不可能であり、５
％以上のガスリークを生じて高い熱交換効率を得
ることができないものであつた。従つて、800℃
以上の高温で使用でき、ガスリークが少なく高い
熱交換効率を達成できるセラミツクス製熱交換器
が求められていた。(Problems to be solved by the invention) However, such conventional ceramic heat exchangers have a temperature of 800℃, which exceeds the heat resistance limit of asbestos plates.
It cannot be used under the above temperature conditions, and the surface of the ceramic heat exchanger is uneven, making it impossible to completely seal the joint surface.
% or more gas leakage occurred, making it impossible to obtain high heat exchange efficiency. Therefore, 800℃
There is a need for a ceramic heat exchanger that can be used at higher temperatures and achieves high heat exchange efficiency with little gas leakage.
（問題点を解決するための手段）
本発明はこのような従来の問題点を解決するた
めに完成されたものであり、内部に加熱流体流路
と被加熱流体流路とが形成されたセラミツクス製
の熱交換体の複数個を、互いの接合面間に未焼成
セラミツクス質からなる紐状シール材を介在させ
てケーシング内に配設したことを特徴とするもの
である。(Means for Solving the Problems) The present invention was completed in order to solve these conventional problems, and it provides a ceramic material having a heating fluid flow path and a heated fluid flow path formed therein. The heat exchanger is characterized in that a plurality of heat exchangers made of aluminum are disposed in a casing with a string-like sealing material made of unfired ceramic interposed between their joint surfaces.
（実施例）
次に本発明を図示の実施例について詳細に説明
すれば、１は対向する両側面及び下面に開口部を
有する金属製のケーシングであり、２は該ケーシ
ング１内に配設された複数個のセラミツクス製の
熱交換体である。各熱交換体２は第２図に拡大し
て示すように、押出し成形法等により成形された
断面多角形のセラミツクス質のハニカム構造体の
貫通孔の端面を一列置きに好ましくは同質のセラ
ミツクス質で封孔したうえ、この封孔された貫通
孔を該貫通孔の軸線に垂直な側面方向から穿孔し
て幅広の貫通孔を形成したものである。この幅広
の貫通孔は加熱流体流路３となり、封孔されてい
ない貫通孔はこれに直交する被加熱流体流路４と
して用いられるものである。前述したように、こ
のようなセラミツクス製の熱交換体２は製造技術
上の制限から大型のものを一体に製造できぬた
め、その複数個を加熱流体流路３が開孔する接合
面５，５間の周縁部に未焼成セラミツクス質から
なる紐状シール材６を環状に介在させてケーシン
グ１内に配設して所要の大きさとする。紐状シー
ル材６は加熱流体流路３が開孔しているため幅が
狭くなつている熱交換体２の接合面５の周縁部を
シールするに適したものであり、未焼成セラミツ
クス質の芯材７を断面Ｕ字状のセラミツクス繊維
体８で包んだものとすることが好ましい。芯材７
は磁器、アルミナ、ムライト、コージライト、
SiC、Si3N4等の熱交換器の使用温度条件下で固
化する性質を有する任意の未焼成セラミツクス質
を使用でき、熱交換体２と同材質とすることが熱
膨張率が等しい等の理由により最も好ましいもの
である。セラミツクス繊維体８は芯材７と熱交換
体２との間に適度の弾力性を与えることによりガ
スリークを更に低下させるためのものであり、熱
交換器の使用条件によりセラミツクス繊維やガラ
ス繊維等を適宜選択して使用するものである。こ
のような紐状シール材６は第１図に示すように熱
交換体２相互の接合面５の周縁部に環状に配置さ
れるほか、熱交換体２とケーシング１との接合面
にも配置してもよい。(Embodiment) Next, the present invention will be described in detail with reference to the illustrated embodiment. 1 is a metal casing having openings on both opposing sides and a lower surface; 2 is a metal casing disposed within the casing 1; This is a heat exchanger made of multiple ceramics. As shown in an enlarged view in FIG. 2, each heat exchanger 2 is made of a ceramic honeycomb structure having a polygonal cross section formed by extrusion molding, etc., and the end surfaces of the through holes are preferably made of the same ceramic material. The sealed through hole is then drilled from the side surface perpendicular to the axis of the through hole to form a wide through hole. This wide through hole serves as a heated fluid flow path 3, and the unsealed through hole is used as a heated fluid flow path 4 perpendicular to this through hole. As mentioned above, such a ceramic heat exchanger 2 cannot be manufactured in one large piece due to limitations in manufacturing technology, so a plurality of the ceramic heat exchangers 2 are connected to the joint surface 5 where the heating fluid flow path 3 is opened. A string-shaped sealing material 6 made of unfired ceramic is interposed in an annular manner at the peripheral edge between the casings 1 and 5, and is disposed within the casing 1 to a desired size. The string-shaped sealing material 6 is suitable for sealing the peripheral edge of the joint surface 5 of the heat exchanger 2, which has a narrow width due to the opening of the heated fluid flow path 3, and is made of unfired ceramic material. It is preferable that the core material 7 is wrapped in a ceramic fiber body 8 having a U-shaped cross section. Core material 7
are porcelain, alumina, mullite, cordierite,
Any unfired ceramic material that has the property of solidifying under the operating temperature conditions of the heat exchanger, such as SiC, Si 3 N 4 , etc., can be used, and it is preferable to use the same material as the heat exchanger 2 because the coefficient of thermal expansion is the same, etc. It is the most preferred one for several reasons. The ceramic fiber body 8 is used to further reduce gas leakage by providing appropriate elasticity between the core material 7 and the heat exchange body 2. Ceramic fibers, glass fibers, etc. may be used depending on the usage conditions of the heat exchanger. It is to be selected and used as appropriate. As shown in FIG. 1, such a string-shaped sealing material 6 is arranged in a ring shape around the periphery of the joint surface 5 between the heat exchangers 2, and also on the joint surface between the heat exchanger 2 and the casing 1. You may.
（作用）
このように構成されたものは、例えばケーシン
グ１の側面から高温の排ガスを内部に送り込むと
ともに下面から空気のような被加熱流体をケーシ
ング１内に送り込めば、排ガスはケーシング１内
の熱交換体２の加熱流体流路３を貫流しつつ同一
の熱交換体２の被加熱流体流路４内を貫流する被
加熱流体を加熱することは従来のものと同様であ
る。しかし、本発明の熱交換器は熱交換体２の接
合面５，５間に介在している紐状シール材６が未
焼成セラミツクス質からなるため800℃をはるか
に越える高温に耐え、また、組立時においては紐
状シール材６が可撓性を有するうえ、紐状シール
材６は板状シール材よりも変形し易いので接合面
５によくなじんで変形し、接合面５と紐状シール
材６との接触部全体に均一なシール圧を発生させ
てガスリークをよく防止するものである。即ち、
熱交換体２の内部を1000mmAqの空気で満して接
合面５からのリーク量を実測したところ、従来の
アスベスト板からなるシール材を用いたものは
7.5Nm3／Ｈでリーク率が５％であつたのに対し
て本実施例のもののリーク率はわずかに0.6％で
あり、リーク率が大幅に減少したことが確認され
た。このような未焼成セラミツクス質からなる紐
状シール材６は使用時の高温により仮焼状態とな
つて固化するがシール効果は何等変化することは
なく、リーク率の減少により熱交換効率は数％の
向上を見た。なお、以上の説明ではハニカム構造
体の幅向の貫通孔を加熱流体流路３とし、封孔さ
れていない貫通孔を被加熱流体流路４としたが、
両者を逆にしてもよいことは言うまでもない。(Function) With this structure, for example, if high-temperature exhaust gas is sent into the inside of the casing 1 from the side surface, and a heated fluid such as air is sent into the casing 1 from the bottom surface, the exhaust gas will flow inside the casing 1. Heating the heated fluid flowing through the heated fluid flow path 3 of the heat exchanger 2 and flowing through the heated fluid flow path 4 of the same heat exchanger 2 is similar to the conventional method. However, in the heat exchanger of the present invention, since the string-like sealing material 6 interposed between the joint surfaces 5, 5 of the heat exchanger body 2 is made of unfired ceramic, it can withstand high temperatures far exceeding 800°C. During assembly, the string-like sealing material 6 is flexible and deforms more easily than the plate-like sealing material, so it deforms and conforms well to the joint surface 5, so that the joint surface 5 and the string-like seal A uniform sealing pressure is generated over the entire contact area with the material 6, thereby effectively preventing gas leakage. That is,
When the inside of the heat exchanger 2 was filled with air of 1000 mmAq and the amount of leakage from the joint surface 5 was measured, it was found that
While the leak rate was 5% at 7.5 Nm 3 /H, the leak rate in this example was only 0.6%, confirming that the leak rate was significantly reduced. Although the string-like sealing material 6 made of such unfired ceramic becomes calcined and solidified due to the high temperature during use, the sealing effect does not change in any way, and the heat exchange efficiency decreases by several percent due to the decrease in the leakage rate. I saw an improvement in In the above explanation, the through holes in the width direction of the honeycomb structure were referred to as heated fluid flow paths 3, and the unsealed through holes were referred to as heated fluid flow paths 4.
It goes without saying that the two may be reversed.
（発明の効果）
本発明は以上の説明からも明らかなように800
℃以上の高温で使用できるものであり、また、ガ
スリークを大幅に減少させて熱交換効率を向上さ
せることができたものである。更に本発明はガス
リーク防止のために接触面に大きいシール圧を与
えても紐状シール材の可塑性によつてシール圧が
均等に分散されるので従来のように局部的に高い
圧力が生じて熱交換体が破損することがなく、ま
た、セラミツクス製の熱交換体をガスリークをほ
とんど生ずることなく接合することができるので
任意の大きさの熱交換器を製造することができる
利点を有するものである。よつて、本発明は従来
のこの種のセラミツクス製の熱交換器の問題点を
解決したものとして、産業の発展に寄与するとこ
ろ極めて大なものである。(Effect of the invention) As is clear from the above explanation, the present invention
It can be used at high temperatures of ℃ or higher, and can significantly reduce gas leaks and improve heat exchange efficiency. Furthermore, in the present invention, even if a large sealing pressure is applied to the contact surface to prevent gas leakage, the sealing pressure is evenly distributed due to the plasticity of the string-like sealing material. This method has the advantage that heat exchangers of any size can be manufactured because the exchanger will not be damaged and ceramic heat exchangers can be joined with almost no gas leakage. . Therefore, the present invention solves the problems of conventional heat exchangers made of ceramics of this kind, and contributes to the development of industry in an extremely large manner.
第１図は本発明の一部切欠斜視図、第２図は要
部の一部切欠斜視図である。
１：ケーシング、２：熱交換体、３：加熱流体
流路、４：被加熱流体流路、５：接合面、６：紐
状シール材、７：芯材、８：セラミツクス繊維
体。
FIG. 1 is a partially cutaway perspective view of the present invention, and FIG. 2 is a partially cutaway perspective view of the main part. DESCRIPTION OF SYMBOLS 1: Casing, 2: Heat exchange body, 3: Heated fluid flow path, 4: Heated fluid flow path, 5: Joint surface, 6: String sealing material, 7: Core material, 8: Ceramic fiber body.
Claims (1)
が形成されたセラミツクス製の熱交換体２の複数
個を、互いの接合面５，５間に未焼成セラミツク
ス質からなる紐状シール材６を介在させてケーシ
ング１内に配設したことを特徴とするセラミツク
ス製熱交換器。 ２ 紐状シール材６が未焼成セラミツクス質の芯
材７をセラミツクス繊維体８で包んだものである
特許請求の範囲第１項記載のセラミツクス製熱交
換器。 ３ 熱交換体２が直交流型のものである特許請求
の範囲第１項または第２項記載のセラミツクス製
熱交換器。[Scope of Claims] 1. A plurality of heat exchangers 2 made of ceramics each having a heating fluid flow path 3 and a heated fluid flow path 4 formed therein are bonded between the joint surfaces 5, 5 of an unfired ceramic body. 1. A heat exchanger made of ceramics, characterized in that it is disposed within a casing 1 with a string-like sealing material 6 made of a ceramic material interposed therebetween. 2. The ceramic heat exchanger according to claim 1, wherein the string-like sealing material 6 is a core material 7 made of unfired ceramics wrapped in a ceramic fiber body 8. 3. The ceramic heat exchanger according to claim 1 or 2, wherein the heat exchanger 2 is of a cross-flow type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14517684A JPS6124996A (en) | 1984-07-12 | 1984-07-12 | Heat exchanger made of ceramics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14517684A JPS6124996A (en) | 1984-07-12 | 1984-07-12 | Heat exchanger made of ceramics |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6124996A JPS6124996A (en) | 1986-02-03 |
| JPS6360319B2 true JPS6360319B2 (en) | 1988-11-24 |
Family
ID=15379188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14517684A Granted JPS6124996A (en) | 1984-07-12 | 1984-07-12 | Heat exchanger made of ceramics |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6124996A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2246539A2 (en) | 2009-04-23 | 2010-11-03 | NGK Insulators, Ltd. | Ceramics heat exchanger and production method thereof |
| WO2011071161A1 (en) | 2009-12-11 | 2011-06-16 | 日本碍子株式会社 | Heat exchanger |
| WO2012133405A1 (en) | 2011-03-29 | 2012-10-04 | 日本碍子株式会社 | Heat exchange member and heat exchanger |
| WO2012169622A1 (en) | 2011-06-10 | 2012-12-13 | 日本碍子株式会社 | Heat exchange member, manufacturing method therefor, and heat exchanger |
-
1984
- 1984-07-12 JP JP14517684A patent/JPS6124996A/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2246539A2 (en) | 2009-04-23 | 2010-11-03 | NGK Insulators, Ltd. | Ceramics heat exchanger and production method thereof |
| WO2011071161A1 (en) | 2009-12-11 | 2011-06-16 | 日本碍子株式会社 | Heat exchanger |
| WO2012133405A1 (en) | 2011-03-29 | 2012-10-04 | 日本碍子株式会社 | Heat exchange member and heat exchanger |
| WO2012169622A1 (en) | 2011-06-10 | 2012-12-13 | 日本碍子株式会社 | Heat exchange member, manufacturing method therefor, and heat exchanger |
| US10527369B2 (en) | 2011-06-10 | 2020-01-07 | Ngk Insulators, Ltd. | Heat exchanger element, manufacturing method therefor, and heat exchanger |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6124996A (en) | 1986-02-03 |
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