JPH01247711A - Supporting device for ceramic honeycomb member - Google Patents
Supporting device for ceramic honeycomb memberInfo
- Publication number
- JPH01247711A JPH01247711A JP63073810A JP7381088A JPH01247711A JP H01247711 A JPH01247711 A JP H01247711A JP 63073810 A JP63073810 A JP 63073810A JP 7381088 A JP7381088 A JP 7381088A JP H01247711 A JPH01247711 A JP H01247711A
- Authority
- JP
- Japan
- Prior art keywords
- ceramic honeycomb
- honeycomb member
- filling rate
- ceramic
- strength direction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 56
- 239000000463 material Substances 0.000 claims description 24
- 239000000835 fiber Substances 0.000 abstract description 5
- 239000003054 catalyst Substances 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 4
- 230000006378 damage Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は、たとえば自動車の排ガス浄化用触媒担体など
として用いられているセラミックハニカム部材を支持す
るための支持装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a support device for supporting a ceramic honeycomb member used, for example, as a catalyst carrier for purifying exhaust gas in automobiles.
（従来の技術）
周知のように、セラミックハニカム部材は、自動車の排
ガス浄化用触媒担体などに用いられている。このように
、排ガス浄化用触媒担体として用いた場合、セラミック
ハニカム部材は勿論のこと、この部材の周辺に位置する
部材も高温にさらされる。セラミックハニカム部材の熱
膨張量は極めて小さい。しかし１周辺に位置する構造材
は通常、金属材で形成されているので、この構造材の熱
膨張量は大きい。したがって、セラミックハニカム部材
を周辺建位置する構造材に直接固定すると、高温にさら
されたときにセラミックハニカム部材と構造材との間に
隙間が発生し、セラミックハニカム部材を良好に固定で
きないことになる。(Prior Art) As is well known, ceramic honeycomb members are used as catalyst carriers for purifying automobile exhaust gas. In this way, when used as a catalyst carrier for exhaust gas purification, not only the ceramic honeycomb member but also the members located around this member are exposed to high temperatures. The amount of thermal expansion of the ceramic honeycomb member is extremely small. However, since the structural members located around one are usually made of metal, the amount of thermal expansion of these structural members is large. Therefore, if a ceramic honeycomb member is directly fixed to surrounding structural members, a gap will occur between the ceramic honeycomb member and the structural member when exposed to high temperatures, making it impossible to properly fix the ceramic honeycomb member. .
このようなことから、従来は、第４図に示すようＫ、周
辺構造材、すなわち金属製の支持管１内にセラミックハ
ニカム部材２を配置するとともにセラミ７クハニ力ム部
材２の外周面と支持管１の内周面との間にセラミックフ
ァイバーマットなどで形成された熱膨張性の緩衛支持材
３を介在させてセラミックハニカム部材２を支持管１に
支持させるようにしている。したがって、セラミックハ
ニカム部材２は、支持管１との間の熱膨張差を吸収し得
る柔構造の緩衝支持材３によって支持されていることに
なる。For this reason, conventionally, as shown in FIG. The ceramic honeycomb member 2 is supported by the support tube 1 by interposing a thermally expandable support material 3 made of ceramic fiber mat or the like between the inner peripheral surface of the tube 1 and the support tube 1 . Therefore, the ceramic honeycomb member 2 is supported by the buffer support member 3 having a flexible structure capable of absorbing the difference in thermal expansion between the ceramic honeycomb member 2 and the support tube 1 .
しかしながら、上記のように構成された従来の。However, the conventional system configured as described above.
いわゆるセラミックハニカム部材の支持装置にあっては
次のような問題があった。すなわち、セラミックハニカ
ム部材２の周囲の支持管１とセラミックハニカム部材２
を連結する熱膨張性を有するセラミックファイバーマッ
トで形成された緩衝支持材３の弾性定数（ヤング率）は
１通常、セラミ７クハニカム部材２の異方性を考慮した
最小弾性定数よりもさらに小さな値である。このため、
第４図に示すように緩衝支持材３を周方向に均一に詰め
た場合、温度変動に伴なってセラミックハニカム部材２
には周辺より一様な圧力が作用し、セラミックハニカム
部材２が最低強度方向で破壊してしまう虞れがあった。The so-called supporting device for a ceramic honeycomb member has the following problems. That is, the support tube 1 around the ceramic honeycomb member 2 and the ceramic honeycomb member 2
The elastic constant (Young's modulus) of the buffer support material 3 formed of a thermally expandable ceramic fiber mat that connects the is 1. Normally, the elastic constant is smaller than the minimum elastic constant considering the anisotropy of the ceramic honeycomb member 2. It is. For this reason,
As shown in FIG. 4, when the buffer support material 3 is packed uniformly in the circumferential direction, the ceramic honeycomb member 2
Since a uniform pressure is applied from the periphery, there is a possibility that the ceramic honeycomb member 2 may be broken in the direction of the lowest strength.
すなわち、第５図に示すように４角形セル（たとえば２
００〜４００８ＥＬＬ／ＩＮ” ） Ｋよつて構成され
たセラミックハニカム部材２の場合、横断面内のθ＝Ｏ
°方向に比べθ＝４５°の対角線方向の引張強度は数分
の１と小さく、シかも圧縮強度は数１０分の１と非常に
弱い。このため、緩衝支持材３を介して支持しても対角
線方向に破壊する虞れがある。また。That is, as shown in FIG.
00 to 4008 ELL/IN") In the case of the ceramic honeycomb member 2 composed of K, θ=O in the cross section
The tensile strength in the diagonal direction at θ=45° is a few times smaller than that in the degree direction, and the compressive strength is very weak at a few tenths of a point. For this reason, even if it is supported through the buffer support material 3, there is a risk that it will break in the diagonal direction. Also.
コープイライト等のセラミックは一般に極端な脆性材料
であるため、局所応力の破壊に対する感度が高く、延性
材で形成されたハニカム部材に比べて拘束支持応力の方
向性などを考慮した支持が重要である。Ceramics such as copillite are generally extremely brittle materials, so they are highly sensitive to fractures due to local stress, and compared to honeycomb members made of ductile materials, support that takes into account the directionality of restraint support stress is important. .
（発明が解決しようとする課題）
上述の如く、セラミックハニカム部材はセル形状によっ
ては、弾性定数や強度に門して強い異方性を有し、均一
に周辺を拘束支持した場合には低強度方向において平均
強度よシ遥かに小さな応力で破壊してしまう虞れがある
。(Problems to be Solved by the Invention) As mentioned above, ceramic honeycomb members have strong anisotropy in terms of elastic constant and strength depending on the cell shape, and when the periphery is uniformly restrained and supported, the ceramic honeycomb member has low strength. There is a risk that it will break with a stress that is much smaller than the average strength in this direction.
そこで本発明は、セラミックハニカム部材の異方性を考
慮し、セラミックハニカム部材が平均強度よシ遥かに小
さい応力で破壊するのを防止できるセラミックハニカム
部材の支持装置を提供することを目的にしている。Therefore, an object of the present invention is to provide a support device for a ceramic honeycomb member that takes into consideration the anisotropy of the ceramic honeycomb member and can prevent the ceramic honeycomb member from breaking under stress that is much smaller than the average strength. .
（課題を解決するための手段）
上記目的を達成するために、本発明に係る支持装置では
、セラミックハニカム部材の高強度方向である側面と周
辺構造物との間に位置する部分の充填率に対して低強度
方向である側面と上記周辺構造物との間に位置する部分
の充填率が低い値に設定された緩衝支持材を使って支持
させている。(Means for Solving the Problems) In order to achieve the above object, in the support device according to the present invention, the filling rate of the portion located between the side surface, which is the high strength direction, of the ceramic honeycomb member and the surrounding structure is adjusted. On the other hand, a buffer support material whose filling rate is set to a low value is used to support the portion located between the side surface, which is the direction of low strength, and the peripheral structure.
（作用） 上記構造であると、高温下にさらされたとき。(effect) With the above structure, when exposed to high temperatures.
セラミックハニカム部材は、緩衝支持材における主とし
て充填率の高い部分、つまり熱膨張の大きい部分によっ
て周辺構造部に支持されるととＫなる。緩衝支持材にお
ける充填率の高い部分は、セラミ７クハニ力ム部材の高
強度方向、つまシ、前述し九〇＝０６，９０°１１８０
°、２７０’の方向に位置している。したがって、緩衝
支持材の熱膨張によってセラミックハニカム部材に繰シ
返し加わる拘束力は、セラミックハニカム部材の高強度
方向だけとなり、結局、セラミックハニカム部材の破壊
を防止することが可能となる。なお、緩衝支持材におけ
る充填率の低い部材は、ガスシール機能だけを発揮する
。The ceramic honeycomb member is supported by the surrounding structure mainly by the portion of the buffer support material with a high filling rate, that is, the portion with large thermal expansion. The portion with a high filling rate in the cushioning support material is the high strength direction of the ceramic 7 honeycomb member.
270'. Therefore, the restraining force that is repeatedly applied to the ceramic honeycomb member due to the thermal expansion of the buffer support material is applied only in the direction of high strength of the ceramic honeycomb member, and eventually it becomes possible to prevent the ceramic honeycomb member from breaking. Note that a member with a low filling rate in the buffer support material exhibits only a gas sealing function.
（実施例） 以下、図面を参照しながら実施例を説明する。(Example) Examples will be described below with reference to the drawings.
第１図は一実施例に係る支持装置を正面から見た図であ
り、第４図と同一部分は同一符号で示しである。したが
って１重複する部分の説明は省略する。FIG. 1 is a front view of a support device according to an embodiment, and the same parts as in FIG. 4 are designated by the same reference numerals. Therefore, explanation of the overlapping portion will be omitted.
この実施例が従来の装置と異なる点は、４・角形のセル
Ｐの組合せによって形成されたセラミックハニカム部材
２と金属製の支持管１との間に介挿される緩衝支持材１
１の構成にある。This embodiment differs from conventional devices in that a buffer support material 1 is inserted between a ceramic honeycomb member 2 formed by a combination of four and square cells P and a metal support tube 1.
It is in the configuration of 1.
緩衝支持材１１は、たとえばセラミックファイツク−マ
ットによって形成されている。そして、この緩衝支持材
１１は、セラミックハニカム部材２の高強度方向に当る
θ＝００，９０’、１８０’。The buffer support material 11 is formed of, for example, a ceramic phyte mat. This buffer support material 11 has θ=00, 90', 180' corresponding to the high strength direction of the ceramic honeycomb member 2.
２７０°の近傍に位置する部分１２の充填率よシ、セラ
ミツクツ・ニカム部材２の低強度方向に当るθ＝４５°
、１３５°、２２５°、３１５°の近傍に位置する部分
１３の充填率の方が小さい値に設定されている。このよ
うに、周方向に充填率が高い部分１２と充填率が低い部
分１３とを交互に分布させた緩衝支持材１１は、次のよ
うＫして形成されたものである。すなわち、第２図（ａ
） Ｋ示すように、低充填率のセラミックファイバー製
の帯状マット１４を用意し、この帯状マット１４の上面
に同マットと同じ材質のマットを裁断して形成した小マ
ット１５を、たとえば２枚ずつセラミックハニカム部材
２の周長を考慮に入れて一定間隔に載置し、これにプレ
ス板１６．１７でプレス加工を施して同図（ｂ）に示す
ように長手方向に高充填率の部分１２と低充填率の部分
１３とが交互に分布した緩衝支持材１１を形成したもの
である。The filling rate of the portion 12 located in the vicinity of 270° is θ = 45°, which corresponds to the low strength direction of the ceramic Nikum member 2.
, 135°, 225°, and 315°, the filling factors of the portions 13 are set to smaller values. The buffer support material 11 in which the portions 12 with a high filling rate and the portions 13 with a low filling rate are alternately distributed in the circumferential direction is formed as follows. That is, Fig. 2 (a
) As shown in K, a belt-shaped mat 14 made of ceramic fiber with a low filling rate is prepared, and on the upper surface of this belt-shaped mat 14, for example, two small mats 15 formed by cutting a mat made of the same material as the mat are placed. Taking the circumferential length of the ceramic honeycomb members 2 into consideration, they are placed at regular intervals and pressed using press plates 16 and 17 to form portions 12 with a high filling rate in the longitudinal direction, as shown in FIG. A buffer support material 11 is formed in which portions 13 with a low filling rate are alternately distributed.
このような構成であると、緩衝支持材１１の熱膨張に伴
なってセラミック／Ｓ−カム部材２に加わる力は、主と
して充填率の高い部分１２を介して加わシ、充填率の低
い部分１３を介して加わる力は極めて小さい。部分１２
はセラミツクツ１ニカム部材２の高強度方向に位置し、
また部分１３は低強度方向に位置している。したがって
、上述した熱膨張でセラミックハニカム部材２が破壊さ
れるのを確実に防止でき、しかもセラミックハニカム部
材２を確実に支持できることになる。なお、充填率の低
い部分１３は、支持と言うより、主としてガスシール機
能を発揮する。With such a configuration, the force applied to the ceramic/S-cam member 2 due to thermal expansion of the buffer support material 11 is mainly applied through the portion 12 with a high filling rate, and is applied through the portion 13 with a low filling rate. The force applied through it is extremely small. part 12
is located in the high-strength direction of ceramic shoes 1 nicham member 2,
Moreover, the portion 13 is located in the direction of low strength. Therefore, it is possible to reliably prevent the ceramic honeycomb member 2 from being destroyed by the above-mentioned thermal expansion, and moreover, it is possible to reliably support the ceramic honeycomb member 2. Note that the portion 13 with a low filling rate primarily functions as a gas seal rather than as a support.
第３図は別の実施例に係る支持装置を示している。この
実施例では、緩衝支持材１１ａにおけるセラミックハニ
カム部材２の高強度方向位置で。FIG. 3 shows a support device according to another embodiment. In this embodiment, the ceramic honeycomb member 2 is located at a high strength direction position in the buffer support material 11a.
かつ対向する２個所の位置だけに高充填率の部分１２を
分布させ、他の位置は低充填率の部分１３としている。In addition, high filling rate portions 12 are distributed only at two opposing positions, and low filling rate portions 13 are provided at other positions.
このように構成しても前記実施例と同様の効果が得られ
る。Even with this configuration, the same effects as in the embodiment described above can be obtained.
なお、上記各実施例においては、緩衝支持材をセラミッ
クファイバーマットで形成しているが、たとえげワイヤ
メ・シーなどで形成してもよい。In each of the above embodiments, the buffer support material is made of ceramic fiber mat, but it may also be made of wire mesh or the like.
以上のように、本発明によれば、セラミ７クハニ力ム部
材の異方性を考慮して、主としてその高強度方向である
側面で支持することができるので、セラミックハニカム
部材の破壊を防ぐことができる。As described above, according to the present invention, considering the anisotropy of the ceramic honeycomb member, it is possible to support the ceramic honeycomb member mainly on its side surface, which is the direction of high strength, thereby preventing destruction of the ceramic honeycomb member. Can be done.
第１図は一実施例に係る支持装置の正面図、第２図は同
装置に組込まれた緩衝支持材の製法を説明するための図
、第３図は別の実施例に係る支持装置の正面図、第４図
は従来の支持装置の正面図、第５図は同支持装置の問題
点を説明するための図である。
１・・・金属製の支持管、２・・・セラミツクツ）ニカ
ム部材、１１．Ｉｌａ・・・緩衝支持材、１２・・・充
填率の高い部分、１３・・・充填率の低い部分。
出願人代理人 弁理士 鈴 江 武 彦第３図FIG. 1 is a front view of a support device according to one embodiment, FIG. 2 is a diagram for explaining the manufacturing method of the buffer support material incorporated in the same device, and FIG. 3 is a front view of a support device according to another embodiment. FIG. 4 is a front view of a conventional support device, and FIG. 5 is a diagram for explaining problems with the support device. 1...Metal support tube, 2...Ceramics) Nikum member, 11. Ila...buffer support material, 12...portion with high filling rate, 13...portion with low filling rate. Applicant's agent Patent attorney Takehiko Suzue Figure 3
Claims (2)
カム部材を周辺構造物に対して支持固定するための支持
装置において、前記セラミックハニカム部材の高強度方
向である側面と前記周辺構造物との間に位置する部分の
充填率に対して低強度方向である側面と上記周辺構造物
との間に位置する部分の充填率が低い値に設定された緩
衝支持材を備えてなることを特徴とするセラミックハニ
カム部材の支持装置。(1) In a support device for supporting and fixing a ceramic honeycomb member having anisotropy in elastic constant and strength to a surrounding structure, a side surface of the ceramic honeycomb member in the high strength direction and the surrounding structure are connected. It is characterized by comprising a buffer support material whose filling rate is set to a low value in a portion located between the side surface and the surrounding structure, which is in a low strength direction with respect to a filling rate in a portion located in between. Support device for ceramic honeycomb members.
あることを特徴とする請求項１に記載のセラミックハニ
カム部材の支持装置。(2) The support device for a ceramic honeycomb member according to claim 1, wherein the buffer support material is a thermally expandable ceramic mat.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63073810A JPH01247711A (en) | 1988-03-28 | 1988-03-28 | Supporting device for ceramic honeycomb member |
| US07/470,434 US4985212A (en) | 1987-09-29 | 1990-01-24 | Support apparatus for a ceramic honeycomb element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63073810A JPH01247711A (en) | 1988-03-28 | 1988-03-28 | Supporting device for ceramic honeycomb member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01247711A true JPH01247711A (en) | 1989-10-03 |
Family
ID=13528889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63073810A Pending JPH01247711A (en) | 1987-09-29 | 1988-03-28 | Supporting device for ceramic honeycomb member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01247711A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007519509A (en) * | 2003-12-29 | 2007-07-19 | コーニング インコーポレイテッド | High strength thin wall honeycomb |
| JP2008261339A (en) * | 1996-06-18 | 2008-10-30 | 3M Co | Installation mat and contamination inhibition device |
| JP2009041468A (en) * | 2007-08-09 | 2009-02-26 | Nichias Corp | Catalytic converter, holding material for catalytic converter and its manufacturing method |
| WO2011099484A1 (en) * | 2010-02-09 | 2011-08-18 | ニチアス株式会社 | Retaining material for catalyst converter and manufacturing method of same |
| JP2011208519A (en) * | 2010-03-29 | 2011-10-20 | Nichias Corp | Holding material for catalytic converter, and method of manufacturing the same |
| WO2015056652A1 (en) * | 2013-10-15 | 2015-04-23 | イビデン株式会社 | Exhaust gas purification device |
| JP2020033935A (en) * | 2018-08-30 | 2020-03-05 | スリーエム イノベイティブ プロパティズ カンパニー | Holding material, manufacturing method thereof and pollution control device |
-
1988
- 1988-03-28 JP JP63073810A patent/JPH01247711A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008261339A (en) * | 1996-06-18 | 2008-10-30 | 3M Co | Installation mat and contamination inhibition device |
| JP2007519509A (en) * | 2003-12-29 | 2007-07-19 | コーニング インコーポレイテッド | High strength thin wall honeycomb |
| JP2009041468A (en) * | 2007-08-09 | 2009-02-26 | Nichias Corp | Catalytic converter, holding material for catalytic converter and its manufacturing method |
| US8197766B2 (en) | 2007-08-09 | 2012-06-12 | Nichias Corporation | Catalytic converter, holding material for catalytic converter and production method thereof |
| WO2011099484A1 (en) * | 2010-02-09 | 2011-08-18 | ニチアス株式会社 | Retaining material for catalyst converter and manufacturing method of same |
| GB2490076A (en) * | 2010-02-09 | 2012-10-17 | Nichias Corp | Retaining material for catalyst converter and manufacturing method of same |
| JPWO2011099484A1 (en) * | 2010-02-09 | 2013-06-13 | ニチアス株式会社 | Holding material for catalytic converter and method for producing the same |
| JP2011208519A (en) * | 2010-03-29 | 2011-10-20 | Nichias Corp | Holding material for catalytic converter, and method of manufacturing the same |
| WO2015056652A1 (en) * | 2013-10-15 | 2015-04-23 | イビデン株式会社 | Exhaust gas purification device |
| JPWO2015056652A1 (en) * | 2013-10-15 | 2017-03-09 | イビデン株式会社 | Exhaust gas purification device |
| JP2020033935A (en) * | 2018-08-30 | 2020-03-05 | スリーエム イノベイティブ プロパティズ カンパニー | Holding material, manufacturing method thereof and pollution control device |
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