CN107299847A - 调节尾气阻力的无黑烟尾气过滤器 - Google Patents

调节尾气阻力的无黑烟尾气过滤器 Download PDF

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CN107299847A
CN107299847A CN201610233846.9A CN201610233846A CN107299847A CN 107299847 A CN107299847 A CN 107299847A CN 201610233846 A CN201610233846 A CN 201610233846A CN 107299847 A CN107299847 A CN 107299847A
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black smoke
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华玉娣
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    • 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
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
    • F01N3/0222—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being monolithic, e.g. honeycombs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • 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
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
    • F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
    • 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
    • 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
    • F01N2250/00—Combinations of different methods of purification
    • F01N2250/04—Combinations of different methods of purification afterburning and catalytic conversion
    • 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
    • F01N2250/00—Combinations of different methods of purification
    • F01N2250/06—Combinations of different methods of purification afterburning and filtering
    • 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
    • F01N2330/06—Ceramic, e.g. monoliths
    • 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
    • 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
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/10—Carbon or carbon oxides
    • 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
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    • F01N2570/14—Nitrogen oxides

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Abstract

本发明涉及一种调节尾气阻力的无黑烟尾气过滤器。它包括过滤箱（1）、备用载体（9）、盖板（10）、支撑板（11）、压簧（12）和轴（8），所述过滤箱（1）内设置有过滤网（2）和陶瓷蜂窝载体（3），过滤网（2）上设置有斜向的压折（2.1）和纵向的压凸（2.2）。本发明一种调节尾气阻力的无黑烟尾气过滤器，在过滤网和陶瓷蜂窝载体两级过滤下，将主要成分为CO、HC、NOx的尾气，反应成CO2、H2O、N2和O2，同时隔壁上的微孔能有效过滤废气中的黑烟颗粒，并在催化剂涂层的作用下黑烟颗粒会被燃烧掉，过滤箱内的压力可以随时调整，保证了发动机的稳定运行。

Description

调节尾气阻力的无黑烟尾气过滤器
技术领域
本发明涉及一种调节尾气阻力的无黑烟尾气过滤器，用于汽车尾气净化。属于汽车设备技术领域。
背景技术
目前，普通的汽车尾气过滤器，很多都是经过简单的过滤直接排出，而配备柴油发动机的汽车，其尾气中含有黑烟颗粒，现有的尾气过滤器不能有效过滤黑烟颗粒，这样会造成环境污染。
尾气过滤器进行处理后才能排放，长时间使用后，有一些不可再生的杂质会附着在过滤载体的内壁上，增大尾气排放的阻力，如此会造成发动机的功率下降，有安全隐患。
发明内容
本发明的目的在于克服上述不足，提供了一种调节尾气阻力的无黑烟尾气过滤器，此尾气过滤器在过滤汽车尾气中的CO、HC、NOx有害气体的同时也能过滤黑烟颗粒，并在高温下黑烟颗粒会逐步燃烧而氧化；过滤箱内的压力可以随时调整，使得尾气排放通畅，不会影响发动机的功率。
本发明的目的是这样实现的：
一种调节尾气阻力的无黑烟尾气过滤器，包括过滤箱，其特点是：所述过滤箱内设置有过滤网和陶瓷蜂窝载体，过滤网上设置有斜向的压折和纵向的压凸，所述过滤箱包括第一圆弧边、第二圆弧边、第一斜边和第二斜边，所述第一圆弧边、第二斜边、第二圆弧边和第一斜边依次首尾相连，相连处采用圆角过渡，所述陶瓷蜂窝载体沿轴线方向密布有气孔，所述气孔的一端为开口，另一端设置有封堵面，所述封堵面和开口间隔布置，所述相邻两个气孔设置有隔壁，隔壁上开有呈蜂窝状的微孔，隔壁上涂覆有催化剂涂层，所述尾气过滤器还包括备用载体、盖板、支撑板、压簧和轴，备用载体与陶瓷蜂窝载体并排布置，轴的一端通过支撑板与过滤箱相抵，轴的另一端与盖板连接，盖板与备用载体的尾气出口端配合，压簧套设在轴上，其一端与盖板相抵，另一端与过滤箱的内壁相抵。
本发明一种调节尾气阻力的无黑烟尾气过滤器，其气孔的孔数为600孔/平方英寸。
本发明一种调节尾气阻力的无黑烟尾气过滤器，其隔壁的厚度为0.13~0.14mm。
与现有技术相比，本发明的有益效果是：
本发明一种调节尾气阻力的无黑烟尾气过滤器，在过滤网和陶瓷蜂窝载体两级过滤下，将主要成分为CO、HC、NOx的尾气，反应成CO2、H2O、N2和O2，同时隔壁上的微孔能有效过滤废气中的黑烟颗粒，并在催化剂涂层的作用下黑烟颗粒会被燃烧掉，进一步提高了尾气净化效果，当过滤箱内的压力超过允许值时，此压力会顶开盖板，尾气从备用载体排出，从而解决了尾气排放阻力大的问题，使得发动机稳定运行。
附图说明
图1为本发明一种调节尾气阻力的无黑烟尾气过滤器的结构示意图。
图2为图1的左视图。
图3为本发明的陶瓷蜂窝载体的截面示意图。
图4为本发明的陶瓷蜂窝载体的部分轴向截面图。
图5为本发明的陶瓷蜂窝载体的隔壁的结构示意图。
图6为本发明的过滤网的结构示意图。
图7为本发明的过滤网的展开图。
图8为图6中A的放大图。
图9为图1中B的放大图。
图中：
过滤箱1，
第一圆弧边1.1，
第二圆弧边1.2，
第一斜边1.3，
第二斜边1.4，
过滤网2，
压折2.1，
压凸2.2，
陶瓷蜂窝载体3，
气孔3.1，
封堵面3.2，
隔壁3.3，
微孔3.4，
催化剂涂层3.5
开口3.6，
尾气进口4，
尾气出口5，
尾气6，
气流通道7，
轴8，
备用载体9，
盖板10，
支撑板11，
压簧12。
具体实施方式
参见图1-9，本发明涉及一种调节尾气阻力的无黑烟尾气过滤器，它包括过滤箱1、过滤网2和陶瓷蜂窝载体3，过滤箱1的左端为尾气进口4，右端为尾气出口5，所述过滤网2和陶瓷蜂窝载体3设置在过滤箱1内，过滤网2设置在靠近尾气进口4处。
所述过滤网2采用不锈钢材料制成，过滤网2上设置有斜向的压折2.1和纵向的压凸2.2，图7为过滤网2的展开图，途中横向为过滤网2卷起来时的轴向，纵向为过滤网2卷起来时的径向，使用时，将过滤网2卷绕后安装在过滤箱1内，压折2.1和过滤网2本体形成气流通道7，气流通道7交汇处形成多个菱形扩张槽，并且每隔一段距离由压凸2.2形成一个隔断，当发动机尾气吹向气流通道7时，一部分沿气流通道7分流，一部分透过过滤网2本体过滤，沿气流通道7分流的部分尾气在经过扩张槽和隔断时会产生不同程度的紊流，形成多个方向的分流，使尾气中的黑烟颗粒能够充分捕集在过滤网2本体上，当黑烟颗粒捕集到一定量时，在发动机排气的高温下会燃烧形成CO2，从而实现过滤器再生的功能。
所述过滤箱1包括第一圆弧边1.1、第二圆弧边1.2、第一斜边1.3和第二斜边1.4，所述第一圆弧边1.1、第二斜边1.4、第二圆弧边1.2和第一斜边1.3依次首尾相连，相连处采用圆角过渡，所述陶瓷蜂窝载体3的形状与过滤箱1对应，且陶瓷蜂窝载体3沿轴线方向密布有气孔3.1，所述气孔3.1的一端为开口3.6，另一端设置有封堵面3.2，所述封堵面3.2和开口3.6间隔布置，所述相邻两个气孔3.1设置有隔壁3.3，隔壁3.3上开有呈蜂窝状的微孔3.4，隔壁3.3上涂覆有催化剂涂层3.5。
其中，气孔3.1的孔数为600孔/平方英寸，隔壁3.3的厚度为0.13~0.14mm。
所述过滤器还包括备用载体9、盖板10、支撑板11、压簧12和轴8，备用载体9与陶瓷蜂窝载体3并排布置，轴8的一端通过支撑板11与过滤箱1相抵，轴8的另一端与盖板10连接，盖板10与备用载体9的尾气出口配合，压簧12套设在轴8上，其一端与盖板10相抵，另一端与过滤箱1的内壁相抵。
正常情况下，盖板10封住备用载体9的尾气出口，当过滤箱1内的压力超过允许值时，此压力会顶开盖板10，尾气从备用载体9排出，从而解决了尾气排放阻力大的问题，使得发动机稳定运行。
工作原理：本发明采用堇青石质制作成蜂窝陶瓷载体，并内置在柴油机尾气净化器内，柴油发动机排出的带有黑烟颗粒的废气尾气进口4进入，经过过滤网2的一级过滤，然后进入陶瓷蜂窝载体3进行二级过滤，从气孔3.1的开口3.6进入，由于气孔3.1在一端是开口3.6，而在另一端则是封堵面3.2，因此废气会通过带有微孔3.4的隔壁3.3，然后从相邻气孔3.1的开口3.6排出，由于黑烟颗粒的直径较微孔3.4大，因此废气中的黑烟颗粒将被过滤捕捉在隔壁3.3上，气流则从微孔3.4穿过。
所述催化剂涂层3.5含有贵金属的活性稀土，主要成份有Pt、Pd、Rh、Al2O3、Ce、La、Zr、Cu、Mn ，柴油燃烧的废气（主要为CO、HC、NOx等有害气体）穿过微孔3.4时，涂覆在隔壁3.3上的催化剂涂层3.5将增强CO、HC、NOx三种气体的活性，促使其进行一定的氧化-还原化学反应，其中CO在高温下氧化成无色无毒的二氧化碳气体，HC化合物在高温下分解成水（H2O）和二氧化碳，NOx还原成氮气和氧气。
当柴油机排气温度达到375 摄氏度时，在催化剂涂层3.5的作用下，隔壁3.3上的黑烟颗粒会逐步燃烧而氧化，黑烟颗粒的净化率约达到85% 以上，当反应温度达到500 摄氏度时催化剂和黑烟颗粒反应从而完全燃烧掉（催化燃烧），此时黑烟颗粒的净化率可达90% 以上。

Claims (3)

1.一种调节尾气阻力的无黑烟尾气过滤器，包括过滤箱（1），其特征在于：所述过滤箱（1）内设置有过滤网（2）和陶瓷蜂窝载体（3），过滤网（2）上设置有斜向的压折（2.1）和纵向的压凸（2.2），所述过滤箱（1）包括第一圆弧边（1.1）、第二圆弧边（1.2）、第一斜边（1.3）和第二斜边（1.4），所述第一圆弧边（1.1）、第二斜边（1.4）、第二圆弧边（1.2）和第一斜边（1.3）依次首尾相连，相连处采用圆角过渡，所述陶瓷蜂窝载体（3）沿轴线方向密布有气孔（3.1），所述气孔（3.1）的一端为开口（3.6），另一端设置有封堵面（3.2），所述封堵面（3.2）和开口（3.6）间隔布置，所述相邻两个气孔（3.1）设置有隔壁（3.3），隔壁（3.3）上开有呈蜂窝状的微孔（3.4），隔壁（3.3）上涂覆有催化剂涂层（3.5），所述尾气过滤器还包括备用载体（9）、盖板（10）、支撑板（11）、压簧（12）和轴（8），备用载体（9）与陶瓷蜂窝载体（3）并排布置，轴（8）的一端通过支撑板（11）与过滤箱（1）相抵，轴（8）的另一端与盖板（10）连接，盖板（10）与备用载体（9）的尾气出口端配合，压簧（12）套设在轴（8）上，其一端与盖板（10）相抵，另一端与过滤箱（1）的内壁相抵。
2.根据权利要求1所述的一种调节尾气阻力的无黑烟尾气过滤器，其特征在于：所述气孔（3.1）的孔数为600孔/平方英寸。
3.根据权利要求1或2所述的一种调节尾气阻力的无黑烟尾气过滤器，其特征在于：所述隔壁（3.3）的厚度为0.13~0.14mm。
CN201610233846.9A 2016-04-16 2016-04-16 调节尾气阻力的无黑烟尾气过滤器 Pending CN107299847A (zh)

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