CN105386840A - 导流板三元催化排气管 - Google Patents

导流板三元催化排气管 Download PDF

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Publication number
CN105386840A
CN105386840A CN201510832110.9A CN201510832110A CN105386840A CN 105386840 A CN105386840 A CN 105386840A CN 201510832110 A CN201510832110 A CN 201510832110A CN 105386840 A CN105386840 A CN 105386840A
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Prior art keywords
outlet pipe
pipe body
guide plate
exhaust pipe
element catalytic
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CN201510832110.9A
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杨云逸
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CHONGQING XINZHUOHUI AUTOMOBILE PURIFIER Co Ltd
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CHONGQING XINZHUOHUI AUTOMOBILE PURIFIER Co Ltd
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Priority to CN201510832110.9A priority Critical patent/CN105386840A/zh
Publication of CN105386840A publication Critical patent/CN105386840A/zh
Pending legal-status Critical Current

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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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/082—Other arrangements or adaptations of exhaust conduits of tailpipe, e.g. with means for mixing air with exhaust for exhaust cooling, dilution or evacuation
    • 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
    • F01N2370/00—Selection of materials for exhaust purification
    • F01N2370/02—Selection of materials for exhaust purification used in catalytic reactors
    • 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
    • F01N3/101—Three-way catalysts
    • 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
    • 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
    • F01N3/2825—Ceramics
    • 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
    • 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
    • F01N3/2825—Ceramics
    • F01N3/2828—Ceramic multi-channel monoliths, e.g. honeycombs

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

本发明申请公开了一种导流板三元催化排气管。方案为：包括排气管本体，排气管本体的一端为进气孔，另一端为排气孔，排气管本体内靠近进气孔设有过滤层，排气管本体内过滤层至排气孔之间设有导流板，导流板面积大于排气管本体横截面积的一半，导流板在排气管本体内径向交错设置，导流板之间设置有水平的三元催化层。本发明申请意在提供一种导流板三元催化排气管，以解决现有技术中由于过滤板设置在管道内壁上，无法使得全部尾气都经过过滤板，使得过滤效果有限的问题。

Description

导流板三元催化排气管
技术领域
本发明涉及一种导流板三元催化排气管。
背景技术
汽车尾气不仅气味怪异，而且令人头昏、恶心，影响人的身体健康。在车辆不多的情况下，大气的自净能力尚能化解汽车排出的尾气。但随着汽车数量的急剧增加，交通拥堵成了家常便饭，汽车本应具备的便捷、舒适、高效的优势逐渐被过多的车辆所抵消。“汽车灾难”已经形成，由此带来的汽车尾气更是害人不浅。为了减少汽车的废气污染，降低尾气排放，几十年来汽车制造厂商一直在寻找有效的方式降低排放污染，但是尾气处理依旧非常困难。
针对上述问题，公开号为CN204386702U的专利文件公开了一种汽车尾气净化器，其技术方案为：包括排气管本体道，排气管本体道下端设置有与排气管本体道相通的两个分管道，在排气管本体道内径向设置有数个半隔板，所述半隔板为扇形半隔板，所述扇形半隔板面积为排气管本体道横截面面积的一半；在半隔板上方、与排气管本体道内壁固接有陶瓷蜂窝过滤板；在分管道内设置有过滤塞，所述过滤塞上设置有数个过滤细管，所述过滤塞为活性炭过滤塞；所述过滤细管的方向为分管道的轴向方向。
在上述专利文件的技术方案中，通过扇形半隔板改变尾气气流方向并通过设置在半隔板上方、排气管本体道内壁上的陶瓷蜂窝过滤板对尾气进行净化和过滤。但是，由于过滤板设置在管道内壁上，扇形半隔板在改变尾气气流方向时无法使全部尾气都经过过滤板，过滤效果有限。
发明内容
本发明意在提供一种导流板三元催化排气管，以解决现有技术中由于过滤板设置在管道内壁上，无法使得全部尾气都经过过滤板，使得过滤效果有限的问题。
本方案中的导流板三元催化排气管，基础方案为：包括排气管本体，排气管本体的一端为进气孔，另一端为排气孔，排气管本体内靠近进气孔设有过滤层，排气管本体内过滤层至排气孔之间设有导流板，导流板面积大于排气管本体横截面积的一半，导流板在排气管本体内径向交错设置，导流板之间设置有水平的三元催化层。
工作原理及有益效果：工作时，尾气由进气孔进入排气管本体，经排气管本体内的三元催化层过滤后由排气孔排出。与现有技术不同的是，首先，在靠近排气孔处设有过滤层，能对尾气内的颗粒进行过滤，避免了颗粒物污染三元催化层。另外，尾气在经过导流板时，由于导流板面积大于排气管本体横截面积的一半，且导流板在排气管本体内上下交错设置，尾气会经由上下交错的导流板与排气管本体形成的空隙转折流动，所以，全部尾气经导流板之间设置的三元催化层催化过滤。延长尾气流动的行程，增长了三元催化层催化过滤的时间，提高了净化效果。
方案2，作为对基础方案的改进，所述过滤层与导流板之间留有间隙。优点是，经过滤层过滤层的尾气进入间隙内能保证气压均匀，使尾气气流均匀稳定地通过三元催化层。
方案3，作为对基础方案的改进，所述导流板在排气管本体内沿轴向均匀设置。优点是，保证每层三元催化层都能有足够的氧化时间，提高催化过滤效果。
方案4，作为对基础方案的改进，所述三元催化层的载体为陶瓷蜂窝板。优点是，方便易得，价格低廉。
方案5，作为对方案4的改进，所述三元催化层的催化剂为氧化铝。优点是，方便易得，价格低廉。
附图说明
图1为本发明导流板三元催化排气管实施例的结构示意图。
具体实施方式
下面通过具体实施方式对本发明作进一步详细的说明：
说明书附图中的附图标记包括：排气管本体10、过滤层20、导流板30、三元催化层40。
实施例
如图1所示，导流板三元催化排气管，方案为：包括排气管本体10，排气管本体10的一端为进气孔，另一端为排气孔，排气管本体10内靠近进气孔设有过滤层20，排气管本体10内过滤层20至排气孔之间设有导流板30，导流板30面积大于排气管本体10横截面积的一半，导流板30在排气管本体10内径向交错设置，导流板30之间设置有水平的三元催化层40。
另外，在本实施例中，过滤层20与导流板30之间留有间隙。优点是，经过滤层20过滤层的尾气进入间隙内能保证气压均匀，使尾气气流均匀稳定的通过三元催化层40。导流板30在排气管本体10内沿轴向均匀设置。优点是，保证每层三元催化层40都能有足够的氧化时间，提高过滤效果。三元催化层40的载体为陶瓷蜂窝板，三元催化层的催化剂为氧化铝。优点是，方便易得，价格低廉。
工作时，尾气由进气孔进入排气管本体10，经排气管本体10内的三元催化层40过滤后由排气孔排出。与现有技术不同的是，首先，在靠近排气孔处设有过滤层20，能对尾气内的颗粒进行过滤，避免了颗粒物污染三元催化层40。另外，尾气在经过导流板30时，由于导流板30面积大于排气管本体10横截面积的一半，且导流板30在排气管本体10内上下交错设置，尾气会经由上下交错的导流板30与排气管本体10形成的空隙转折流动，所以，全部尾气经导流板30之间设置的三元催化层40催化过滤。延长的尾气流动的行程，增长了三元催化层40催化过滤的时间，提高了净化效果。
以上所述的仅是本发明的实施例，方案中公知的具体结构和/或特性等常识在此未作过多描述。应当指出，对于本领域的技术人员来说，在不脱离本发明结构的前提下，还可以作出若干变形和改进，这些也应该视为本发明的保护范围，这些都不会影响本发明实施的效果和专利的实用性。本申请要求的保护范围应当以其权利要求的内容为准，说明书中的具体实施方式等记载可以用于解释权利要求的内容。

Claims (5)

1.导流板三元催化排气管，包括排气管本体，所述排气管本体的一端为进气孔，另一端为排气孔，其特征在于，所述排气管本体内靠近进气孔设有过滤层，所述排气管本体内过滤层至排气孔之间设有导流板，所述导流板面积大于排气管本体横截面积的一半，所述导流板在排气管本体内径向交错设置，所述导流板之间设置有水平的三元催化层。
2.根据权利要求1所述的导流板三元催化排气管，其特征在于：所述过滤层与导流板之间留有间隙。
3.根据权利要求1所述的导流板三元催化排气管，其特征在于：所述导流板在排气管本体内沿轴向均匀间隔设置。
4.根据权利要求1所述的导流板三元催化排气管，其特征在于：所述三元催化层的载体为陶瓷蜂窝板。
5.根据权利要求4所述的导流板三元催化排气管，其特征在于：所述三元催化层的催化剂为氧化铝。
CN201510832110.9A 2015-11-25 2015-11-25 导流板三元催化排气管 Pending CN105386840A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108104911A (zh) * 2017-12-17 2018-06-01 斯凯伦动力设备科技（兴化）有限公司 一种内燃式发电机用废气排放处理装置
CN108404582A (zh) * 2018-05-05 2018-08-17 中科天工电气控股有限公司 一种具有高效循环效率的泄压装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108104911A (zh) * 2017-12-17 2018-06-01 斯凯伦动力设备科技（兴化）有限公司 一种内燃式发电机用废气排放处理装置
CN108404582A (zh) * 2018-05-05 2018-08-17 中科天工电气控股有限公司 一种具有高效循环效率的泄压装置

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