CN1068798C - 交叉排列的微观结构 - Google Patents

交叉排列的微观结构 Download PDF

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CN1068798C
CN1068798C CN95195288A CN95195288A CN1068798C CN 1068798 C CN1068798 C CN 1068798C CN 95195288 A CN95195288 A CN 95195288A CN 95195288 A CN95195288 A CN 95195288A CN 1068798 C CN1068798 C CN 1068798C
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microstructure
honeycomb ceramics
described honeycomb
intersects
thin plate
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CN1158577A (zh
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汉斯·博德
乌多·马丁
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Vitesco Technologies Lohmar Verwaltungs GmbH
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Emitec Gesellschaft fuer Emissionstechnologie mbH
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    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
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    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
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    • 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
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    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
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    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
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    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
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    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
    • F01N3/2807—Metal other than sintered metal
    • F01N3/281—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates
    • F01N3/2821—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates the support being provided with means to enhance the mixing process inside the converter, e.g. sheets, plates or foils with protrusions or projections to create turbulence
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    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
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    • F01N3/28—Construction of catalytic reactors
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    • 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
    • F01N2330/323—Corrugations of saw-tooth or triangular form
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/30—Honeycomb supports characterised by their structural details
    • F01N2330/38—Honeycomb supports characterised by their structural details flow channels with means to enhance flow mixing,(e.g. protrusions or projections)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/30—Honeycomb supports characterised by their structural details
    • F01N2330/44—Honeycomb supports characterised by their structural details made of stacks of sheets, plates or foils that are folded in S-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
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    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/1234—Honeycomb, or with grain orientation or elongated elements in defined angular relationship in respective components [e.g., parallel, inter- secting, etc.]
    • 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
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    • Y10T428/1241—Nonplanar uniform thickness or nonlinear uniform diameter [e.g., L-shape]
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    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
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    • Y10T428/1241—Nonplanar uniform thickness or nonlinear uniform diameter [e.g., L-shape]
    • Y10T428/12417—Intersecting corrugating or dimples not in a single line [e.g., waffle form, etc.]

Abstract

本发明涉及一种金属蜂窝体，它有许多由金属薄板(3、4)构成的通道(2)，流体(F)可沿一个流动方向(R)流过通道(2)，薄板(3、4)至少有一部分具有有至少一种基本的宏观结构，这一宏观结构形成通道(2)并确定了蜂窝的形状。至少部分薄板(3、4)在至少局部区域内设有附加的微观结构。此微观结构与流动方向(R)成一个角度(α)延伸，并隔开间距地彼此相继。微观结构(5)设计为它们互相交叉。

Description

交叉排列的微观结构
本发明涉及一种金属蜂窝体，它有许多由金属薄板构成的通道，流体可沿一个流动方向流过通道，薄板至少有一部分具有至少一种基本的宏观结构，这一宏观结构形成通道并确定了蜂窝的形状，其中，至少部分薄板在至少局部区域内设有附加的微观结构，此微观结构与流动方向成一个角度地延伸，并间隔距离地彼此相继。
由EP0454712B1已知这样一种金属蜂窝体。
按EP0454712B1制作的蜂窝体的工作令人极为满意。
鉴于金属蜂窝体设有起催化作用的含贵金属的表面，所以力求尽最大可能减少贵金属的含量，从而能降低催化器的造价。
以此为出发点，本发明的目的是进一步改进已知的蜂窝体，提高蜂窝体的催化效果。
按本发明通过权利要求1特征部分所述之特征达到此目的。有利的进一步设计是从属权利要求的内容。
出人意外地得到了证实，使微观结构互相交叉，产生了附加的流动技术方面的效果。此流动技术方面的效果指的是，互相交叉的微观结构强化了边缘流与核流的混合。因而改善了气体与各流动通道起催化作用的表面之间有利的质量转移。无论是产物的排出还是将离析物输往有效的催化表面都得到了改善，因为现在流动本身有一个朝表面方向的分量，所以，这一流动分量促进了向起催化作用的表面的传输。
业已证实，流动效果取决于交叉点的位置。
取决于交叉点所在的位置，可发生非常强烈的混合。若微观结构在波峰上相交，则导致流动有强烈的缠结特性。
还可以这样来影响流动特性，即，将微观结构的交角设计得比较小。两个微观结构之间的流动不可能是平稳的，所以在流动的内部发生强烈的搅动。
按本发明，由波纹形和平整的金属薄板卷绕而成的蜂窝体中，平整的薄板也有微观结构，这种微观结构沿薄板纵向延伸。一种横向于薄板纵向延伸的微观结构的设计，迄今在生产工艺中没有实现，因为卷绕这样一种平整薄板所需要的力很大，这就要求使用能产生较大的力量的工具，以便完成薄板的卷绕。此外，发现薄板起皱。
采用在平整薄板上设计交叉结构的建议，现在便可以不用费更大的力量来卷绕此平整的薄板，与此同时达到了改善混合的目的。此外，还提高了蜂窝体的稳定性。微观结构的横断面形状，例如可与在EP0454712B1中介绍的一致。
由下面对实施例的说明给出其他的优点和特征。其中：
图1带有微观结构的波纹形薄板；
图2带有微观结构的波纹形薄板第二种实施形式；以及
图3带有微观结构的平整薄板。
金属框架结构由许多通过薄板3、4形成的通道2构成，流体F可沿流动方向R流过通道2。薄板3设计成波纹形的。
薄板4是平的。波纹形薄板和平整的薄板彼此交替排列。
波纹形薄板3设有微观结构5。微观结构5涉及的是在波纹形薄板3中交叉的条状冲压印痕。由图1可见，微观结构5在波峰6上相交。
图2表示了另一种实施形式。与图1所示实施形式的区别在于，微观结构5不仅在波峰6上而且也在波谷7内和侧边8上相交。
交叉的波纹结构设计成与流动方向成一个角度α。
图3表示了平整的薄板4。在平整的薄板4中设有交叉的微观结构5。
平整薄板的交叉的微观结构，使之允许卷绕一个热体，迄今它只在有沿卷绕方向延伸的结构中才有可能。
还可以这样来设计一种热体，即，将具有微观结构的波纹形薄板与具有微观结构的平整薄板组合在一起。

Claims (10)

1．具有许多由金属薄板(3、4)构成的通道(2)的金属蜂窝体，流体(F)可沿一个流动方向(R)流过通道(2)，薄板(3、4)至少有一部分具有至少一种基本的宏观结构，这一宏观结构形成通道(2)并确定了蜂窝的形状，其中，至少部分薄板(3、4)至少在局部区域内设有附加的微观结构，以及，此微观结构与流动方向(R)成一个角度(α)延伸，并隔开间距地彼此相继，其特征为：微观结构(5)互相交叉。
2．按照权利要求1所述之蜂窝体包括交替的平整和波纹形薄板(4或3)层，其特征为：波纹形薄板(3)设有微观结构(5)。
3．按照权利要求2所述之蜂窝体，其特征为：微观结构(5)在波峰(6)上相交。
4．按照权利要求2所述之蜂窝体，其特征为：微观结构(5)在波谷(7)内相交。
5．按照权利要求2所述之蜂窝体，其特征为：微观结构(5)在波纹形薄板(3)的一个或两个侧边(8)上相交。
6．按照权利要求2所述之蜂窝体，其特征为：微观结构在波峰(6)上和波谷(7)内相交。
7．按照权利要求2所述之蜂窝体，其特征为：微观结构在波峰(6)上以及在至少一个侧边(8)上相交。
8．按照权利要求2所述之蜂窝体，其特征为：微观结构在波谷(7)内以及在至少一个侧边(8)上相交。
9．按照权利要求2所述之蜂窝体，其特征为：微观结构在波峰(6)上、在波谷(7)内以及在至少一个侧边(8)上相交。
10．按照权利要求2所述之蜂窝体，其特征为：在平整的薄板(4)上设有微观结构(5)。
CN95195288A 1994-09-26 1995-09-22 交叉排列的微观结构 Expired - Fee Related CN1068798C (zh)

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DEP4434363.9 1994-09-26
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EP0784507B1 (de) 2000-01-26
CN1158577A (zh) 1997-09-03
AU3609595A (en) 1996-04-19
BR9509164A (pt) 1997-11-25
EP0784507A1 (de) 1997-07-23
TW314572B (zh) 1997-09-01
WO1996009893A1 (de) 1996-04-04
DE59507708D1 (de) 2000-03-02
TW319807B (zh) 1997-11-11
ES2143075T3 (es) 2000-05-01
KR970706064A (ko) 1997-11-03
WO1996009892A1 (de) 1996-04-04
KR970706065A (ko) 1997-11-03
MY114005A (en) 2002-07-31
JPH10506053A (ja) 1998-06-16
JPH10506321A (ja) 1998-06-23
KR100229363B1 (ko) 1999-11-01
JP3926382B2 (ja) 2007-06-06
RU2153933C2 (ru) 2000-08-10
US5795658A (en) 1998-08-18
BR9509031A (pt) 1998-06-23
EP0783370A1 (de) 1997-07-16

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