WO2017084549A1 - Mixer and mixing components thereof - Google Patents

Mixer and mixing components thereof Download PDF

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Publication number
WO2017084549A1
WO2017084549A1 PCT/CN2016/105817 CN2016105817W WO2017084549A1 WO 2017084549 A1 WO2017084549 A1 WO 2017084549A1 CN 2016105817 W CN2016105817 W CN 2016105817W WO 2017084549 A1 WO2017084549 A1 WO 2017084549A1
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WO
WIPO (PCT)
Prior art keywords
plate
inclined portion
mixer
downstream
exhaust direction
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PCT/CN2016/105817
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French (fr)
Chinese (zh)
Inventor
殷雷
郑祥
赵治国
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天纳克（苏州）排放***有限公司
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Application filed by 天纳克（苏州）排放***有限公司 filed Critical 天纳克（苏州）排放***有限公司
Publication of WO2017084549A1 publication Critical patent/WO2017084549A1/en

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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
    • 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

Definitions

  • the invention relates to a mixer and a mixing assembly thereof, and belongs to the technical field of engine exhaust aftertreatment.
  • the uniformity of ammonia distribution in the exhaust aftertreatment system (eg, selective catalytic reduction system, SCR system) has an important impact on the overall performance and durability of the system. If the ammonia distribution is uneven, it will lead to excessive ammonia in the local area and easy to cause ammonia leakage, while in other thin ammonia regions, the nitrogen oxide (NOx) conversion efficiency is too low. Uneven distribution of ammonia over a long period of time can result in uneven aging of the catalyst, thereby affecting the overall performance of the catalyst. In addition, the uneven distribution of urea droplets may cause the local tube wall or mixed structure temperature to be too low to form crystallization, which may block the exhaust pipe when severe, resulting in a decrease in engine power performance.
  • SCR system selective catalytic reduction system
  • the present invention adopts the following technical solution: a mixer for mixing urea droplets with exhaust gas of an engine, the mixer including a support portion and at least one plate fixed to the support portion a sheet comprising an inclined portion extending obliquely downstream of the exhaust direction, the inclined portion for achieving sufficient mixing of the urea droplets with the exhaust of the engine, the sheet further comprising further from the inclined portion A tail fin that extends horizontally downstream of the exhaust direction.
  • the plate comprises a plate portion, the inclined portion is formed from the plate portion; the plate is a plurality of plates arranged in a stack, the plurality of plates
  • the first plate includes a first plate-shaped portion extending horizontally, a first inclined portion extending obliquely from the first plate-shaped portion toward a downstream side of the exhausting direction, and An inclined portion further extends to the first tail extending horizontally downstream of the exhaust direction.
  • the first plate portion is provided with a plurality of first fins formed by upward punching, and the first fins are displayed in three rows along the exhaust direction.
  • the first inclined portion extends completely beyond the support portion, and the first tail portion is parallel to the first plate portion.
  • the plurality of plates comprise a second plate below the first plate, the second plate comprises a second plate portion extending horizontally, from the second a second inclined portion that extends obliquely downstream of the exhaust direction and a second tail that extends horizontally downstream from the second inclined portion toward the exhaust direction.
  • the second plate portion is wider than the first plate portion, and the second plate portion is provided with a plurality of second fins formed by upward punching, the second fins They are displayed in two rows along the exhaust direction.
  • the second inclined portion completely extends beyond the support portion, the second tail fin is parallel to the second plate portion, and the first tail wing is located in a vertical direction Between the first plate portion and the second plate portion.
  • the plurality of plates comprise a third plate below the second plate, the third plate comprising a horizontally extending third plate portion, from the third a third inclined portion that extends obliquely downstream of the exhaust direction and a third tail that extends horizontally downstream from the third inclined portion toward the exhaust direction.
  • the third plate portion is not provided with a fin, the third inclined portion extends beyond the support portion, and the third tail portion is parallel to the third plate portion
  • the second empennage extends beyond the first empennage in the exhaust direction, and the first empennage extends beyond the third empennage in the exhaust direction.
  • the plurality of plates comprise a fourth plate below the third plate, the fourth plate comprises a fourth plate portion extending horizontally, from the fourth a fourth inclined portion that extends obliquely downstream of the exhaust direction and a fourth tail that extends horizontally downstream from the fourth inclined portion toward the exhaust direction.
  • the fourth plate portion is not provided with fins, the fourth inclined portion extends beyond the support portion, and the fourth tail portion is parallel to the fourth plate portion
  • the second empennage extends beyond the fourth empennage in the exhaust direction, and the fourth empennage extends beyond the third empennage in the exhaust direction.
  • the third inclined portion is different from the extending oblique direction of the fourth inclined portion; the third inclined portion is provided with an opening at the middle, and the fourth inclined portion extends through The opening intersects the third inclined portion with the fourth inclined portion.
  • the first inclined portion, the second inclined portion, and the third inclined portion both extend in a lower right corner direction, and the fourth inclined portion extends in an upper right corner direction.
  • the plurality of plates comprise a fifth plate below the fourth plate, the fifth plate comprising a fifth plate portion extending horizontally, from the fifth a fifth inclined portion extending obliquely downstream of the exhaust portion in the exhaust direction and a fifth tail extending horizontally downstream from the fifth inclined portion toward the exhaust direction, the fifth inclined portion being rightward
  • the angular direction extends and is parallel to the fourth inclined portion.
  • the fifth plate portion is not provided with a fin, and the fifth inclined portion at least partially extends beyond the support portion, the fifth tail portion and the fifth plate portion parallel.
  • the mixer further includes a horizontal plate fixed on the support portion and located under the fifth plate, the horizontal plate including a side protruding from the support portion a first protruding portion and a second protruding portion protruding from the other side of the supporting portion, the first protruding portion including a first inclined piece protruding in a lower left direction and the first inclined piece located at the first inclined piece a rear portion and a bent portion extending upward from both sides of the first protruding portion; the second protruding portion includes a second inclined piece that protrudes in an upper right direction.
  • the invention also relates to a mixing assembly comprising a mixing tube, a mixer located within the mixing tube, and a mixing element located within the mixing tube and downstream of the mixer, wherein the mixer is the aforementioned mixer
  • the mixing element is another mixer or an open cell separator.
  • the present invention allows a smooth flow of airflow by adding a horizontal tail to the plate of the mixer, reduces backflow, reduces the risk of forming a liquid film, and is difficult to form urea crystals.
  • Figure 1 is a perspective view of a mixing assembly of the present invention in a first embodiment.
  • Fig. 2 is an exploded perspective view of Fig. 1;
  • Figure 3 is an exploded perspective view of another angle of Figure 2.
  • Figure 4 is a perspective view of the mixer of the present invention in the first embodiment.
  • Figure 5 is a front elevational view of Figure 4.
  • Figure 6 is a cross-sectional view taken along an angle of Figure 4.
  • Figure 7 is a left side view of Figure 4.
  • Figure 8 is a right side view of Figure 4.
  • Figure 9 is a partially exploded perspective view of the mixer of the present invention.
  • Figure 10 is an exploded view of the sheet and the cross plate of the mixer of the present invention.
  • Figure 11 is a perspective view of the mixing element of the present invention in the first embodiment.
  • Figure 12 is a front elevational view of Figure 11;
  • Figure 13 is a cross-sectional view taken along an angle of Figure 11;
  • Figure 14 is a left side view of Figure 11;
  • Figure 15 is a partially exploded perspective view of the mixing element of the present invention.
  • Figure 16 is a perspective view of the mixing assembly of the present invention in a second embodiment.
  • Figure 17 is an exploded perspective view of Figure 16 .
  • Figure 18 is a perspective view of the mixer of the present invention in the second embodiment.
  • Figure 19 is an exploded view of the sheet and the cross plate of the mixer of the present invention.
  • Figure 20 is a front elevational view of the mixer of the present invention.
  • Figure 21 is a cross-sectional view taken along an angle of Figure 18;
  • Figure 22 is a left side view of Figure 18;
  • Figure 23 is a right side view of Figure 18;
  • Figure 24 is a comparison of the addition of the tail fin and the addition of the tail fin.
  • the present invention discloses a mixing assembly 100 comprising a mixing tube 1, a mixer 2 located in the mixing tube 1, and a mixer located in the mixing tube 1 and located in the mixer. 2 downstream mixing elements.
  • the mixing element is another mixer 3.
  • the mixing pipe 1 is provided with a urea nozzle mounting portion 11 for mounting a urea nozzle (not shown), and the mixer 2 and the other mixer 3 are located downstream of the urea nozzle mounting portion 11.
  • an oxidation catalyst (DOC) and/or a diesel particulate trap (DPF) may be disposed upstream of the mixing assembly 100.
  • a selective catalytic reduction (SCR) may be disposed downstream of the mixing assembly 100.
  • the urea nozzle sprays the atomized urea solution into the mixing tube, and the exhaust gas and the urea droplets are first mixed by the mixer 2 and mixed for a second time by the mixing element.
  • the homogeneous mixture after mixing is subjected to selective catalytic reduction (SCR) to cause a reaction to reduce the content of nitrogen oxides.
  • the mixer 2 is used to mix urea droplets with the exhaust of the engine.
  • the mixer 2 includes a support portion 20 and at least one plate fixed to the support portion 20.
  • a sheet is feasible.
  • the plate is a plurality of plates which are stacked, and the plate includes a first plate 21, a second plate 22, and a second layer which are sequentially stacked in a vertical direction.
  • the three sheets 23, the fourth sheets 24, and the fifth sheets 25 are provided.
  • the first plate 21 includes a first plate portion 211 extending horizontally in the support portion 20 and a first inclined portion extending obliquely from the first plate portion 211 toward the downstream of the exhaust direction. 212 and a first tail 213 extending horizontally from the first inclined portion 212 to the downstream of the exhaust direction.
  • the first plate portion 211 is provided with a plurality of first fins 2111 formed by upward punching, and the first fins 2111 are displayed in three rows along the exhaust direction.
  • the first inclined portion 212 extends completely beyond the support portion 20 , and the first tail 213 is parallel to the first plate portion 211 .
  • the second plate 22 includes a second plate portion 221 extending horizontally in the support portion 20 and a second inclined portion extending obliquely from the second plate portion 221 toward the downstream of the exhaust direction. 222 and a second tail 223 extending horizontally from the second inclined portion 222 to the downstream of the exhaust direction.
  • the second plate portion 221 is wider than the first plate portion 211, and the second plate portion 221 is provided with a plurality of second fins 2211 formed by upward pressing, and the second fins 2211 are along the row
  • the gas direction is displayed in two rows. Referring to FIG. 6, the second inclined portion 222 extends completely beyond the support portion 20, the second tail 223 is parallel to the second plate portion 221, and the first tail 213 is in a vertical direction.
  • the upper portion is located between the first plate portion 211 and the second plate portion 221 .
  • the third plate 23 includes a third plate portion 231 extending horizontally in the support portion 20 and a third inclined portion extending obliquely from the third plate portion 231 toward the downstream of the exhaust direction. 232 and a third tail 233 extending horizontally from the third inclined portion 232 to the downstream of the exhaust direction.
  • the third plate portion 231 is not provided with fins.
  • the third inclined portion 232 partially extends beyond the support portion 20, the third tail 233 is parallel to the third plate portion 231; the second tail 223 extends beyond the first in the exhaust direction
  • the tail fin 213 extends beyond the third tail 233 in the exhaust direction.
  • the fourth plate 24 includes a fourth plate portion 241 extending horizontally in the support portion 20 and a fourth inclined portion extending obliquely from the fourth plate portion 241 toward the downstream of the exhaust direction. 242 and a fourth tail fin 243 extending horizontally from the fourth inclined portion 242 to the downstream of the exhaust direction.
  • the fourth plate portion 241 is not provided with fins, the fourth inclined portion 242 partially extends beyond the support portion 20, and the fourth tail portion 243 is parallel to the fourth plate portion 241;
  • the two tail fins 223 extend beyond the fourth tail fin 243 in the exhaust direction, and the fourth tail fin 243 extends beyond the third tail fin 233 in the exhaust direction.
  • the third inclined portion 232 is different from the extending oblique direction of the fourth inclined portion 242; the third inclined portion 232 is provided with an opening 2321 located in the middle, and the fourth inclined portion 242 extends through the opening 2321
  • the third inclined portion 232 and the fourth inclined portion 242 are formed to intersect.
  • the fifth plate 25 includes a fifth plate portion 251 extending horizontally in the support portion 20 and a fifth inclined portion extending obliquely from the fifth plate portion 251 toward the downstream of the exhaust direction. 252 and a fifth tail 253 extending horizontally from the fifth inclined portion 252 to the downstream of the exhaust direction, the fifth inclined portion 252 extending in the upper right direction and parallel to the fourth inclined portion 242 .
  • the fifth plate portion 251 is not provided with fins, and the fifth inclined portion 252 at least partially extends beyond the support portion 20, and the fifth tail portion 253 is parallel to the fifth plate portion 251.
  • the first inclined portion 213 , the second inclined portion 222 , and the third inclined portion 232 all extend in a right lower corner direction, the fourth inclined portion 242 and the fifth inclined portion.
  • the portion 252 extends in the upper right direction.
  • the mixer 2 further includes a horizontal plate 26 fixed on the support portion 20 and located below the fifth plate 25 .
  • the cross plate 26 includes a first protrusion 261 that protrudes from one side (for example, the left side) of the support portion 20 and a second protrusion that protrudes from the other side (for example, the right side) of the support portion 20 Part 262.
  • the first protruding portion 261 includes a first inclined piece 2611 protruding in a lower left direction and a bent portion extending rearward of the first inclined piece 2611 and extending upward from both sides of the first protruding portion 261
  • the second protrusion 262 includes a second inclined piece 2621 that protrudes in the upper right direction.
  • the first plate-shaped portion 211 to the fifth plate-like portion 251 are collectively referred to as a plate-like portion; the first inclined portion 212 to the fifth inclined portion 252 are collectively referred to as an inclined portion; the first rear wing 213 to the first The five-tailed wing 253 is collectively referred to as the tail.
  • the plate-like portion extends horizontally, the turbulence formed by the exhaust gas and/or the urea droplets is small, and in some embodiments, the plate-shaped portion may not be provided.
  • the mixture of urea droplets and exhaust gas directs the mixture to the inclined portion under the action of the first fin 2111, the second fin 2211, and the plate portion.
  • the inclined portion forms a crossover of the mixture behind the inclined portion to achieve thorough mixing of the urea droplets with the exhaust gas.
  • the inclined portion has a function of spoiler to uniformly mix the mixture.
  • the inclination angles, directions, and positional relationship of the first inclined portion 212 to the fifth inclined portion 252 are obtained by optimization by means of CFD.
  • the direction, the length, and the positional relationship between the first and second tail fins 213 to 253 are also the regions of the present invention. Different from the existing technology.
  • the mixer of the present invention having a tail fin and the mixer without the tail fin were tested under the following conditions.
  • the present invention allows a smooth flow of airflow by adding a horizontal tail to the plate of the mixer 1, reducing backflow, reducing the risk of forming a liquid film, and making it difficult to form urea crystals.
  • the other mixer 3 includes a second support portion 30 and a plurality of plates fixed in the second support portion 30.
  • the sheet includes a sixth sheet 31, a seventh sheet 32, an eighth sheet 33, a ninth sheet 34, and a tenth sheet 35 which are sequentially laminated in the vertical direction.
  • Each of the plates is provided with a plurality of fins and an inclined portion extending from the second support portion.
  • the present invention also discloses a mixing assembly 200 comprising a mixing tube 1, a mixer 4 located in the mixing tube 1, and a mixing tube 1 located in the mixing tube 1 and located in the mixing Mixing element downstream of the device 4.
  • the mixing element is an apertured partition 5.
  • the same reference numerals denote the same structures.

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

Abstract

A mixer (2) and a mixing assembly (100) thereof for mixing urea droplets with engine exhaust gas. Said mixer (2) comprises: a support (20) and a plurality of plates (21, 22, 23, 24, 25) fixed to the support and arranged in a stacked manner, the plate comprising a plate-like portion (211, 221, 231, 241, 251) and an inclined portion (212, 222, 232, 242, 252) extending obliquely from the plate-like portion toward the downstream direction of the exhaust gas; said inclined portion is for achieving sufficient mixing of the urea droplets with the exhaust gas of the engine; and said plate further comprises a tail fin (213, 223, 233, 243, 253) extending horizontally from said inclined portion toward the said downstream direction of the exhaust gas. With such arrangement, gas flow can pass smoothly through the mixer, thereby decreasing backflow, reducing the risk of forming a liquid film, and hence not easy to form urea crystals.

Description

混合器及其混合组件Mixer and its hybrid components
本申请要求了申请日为2015年11月18日、申请号为201520921054.1、发明名称为“混合器及其混合组件”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。Priority is claimed on Japanese Patent Application No. 201520921054.1, the entire disclosure of which is hereby incorporated herein in
技术领域Technical field
本发明涉及一种混合器及其混合组件，属于发动机排气后处理技术领域。The invention relates to a mixer and a mixing assembly thereof, and belongs to the technical field of engine exhaust aftertreatment.
背景技术Background technique
研究表明排气后处理***(例如选择性催化还原***，SCR***)管路中氨分布的均匀程度对***的整体性能和耐久性能有重要的影响。如果氨分布不均匀会导致局部区域氨过多从而易造成氨泄漏，而在另一些氨稀薄区域造成氮氧化合物(NOx)转化效率过低。长时间氨的不均匀分布会导致催化剂老化不均匀，从而影响催化剂的整体性能。另外，尿素液滴的不均匀分布会造成局部管壁或混合结构温度过低，形成结晶，严重时会堵塞排气管、导致发动机动力性能下降。Studies have shown that the uniformity of ammonia distribution in the exhaust aftertreatment system (eg, selective catalytic reduction system, SCR system) has an important impact on the overall performance and durability of the system. If the ammonia distribution is uneven, it will lead to excessive ammonia in the local area and easy to cause ammonia leakage, while in other thin ammonia regions, the nitrogen oxide (NOx) conversion efficiency is too low. Uneven distribution of ammonia over a long period of time can result in uneven aging of the catalyst, thereby affecting the overall performance of the catalyst. In addition, the uneven distribution of urea droplets may cause the local tube wall or mixed structure temperature to be too low to form crystallization, which may block the exhaust pipe when severe, resulting in a decrease in engine power performance.
为了降低结晶的风险，业界已经提出了增加混合器的方案。2013年12月17日公告的美国专利US 8,607,555 B2揭示了一种混合器，其包括位于***的环状框体以及固定于所述框体内的若干板片。每一板片包括沿排气方向延伸凸出所述框体的倾斜片。这些倾斜片用以将排气与雾化的尿素溶液进行混合。但是，这种结构的混合器存在某些缺点。例如，当雾化的尿素溶液流过这些倾斜片时，会在倾斜片的背面形成回流。由于回流所产生的低压或者负压将在倾斜片的背面形成液膜。总所周知，液膜与尿素结晶具有密不可分的关系。特别是在大流量的工况下，这种液膜极容易形成尿素结晶。In order to reduce the risk of crystallization, the industry has proposed a scheme to increase the mixer. U.S. Patent No. 8,607,555 B2, issued on Dec. 17, 2013, which is incorporated herein incorporated by reference in its entirety in its entire entire entire entire entire entire entire entire entire entire entire entire entire entire portion Each of the sheets includes an inclined piece that protrudes in the exhaust direction and protrudes from the frame. These inclined sheets are used to mix the exhaust gas with the atomized urea solution. However, mixers of this construction have certain disadvantages. For example, when an atomized urea solution flows through the inclined sheets, a backflow is formed on the back surface of the inclined sheets. A low pressure or a negative pressure due to reflow will form a liquid film on the back side of the inclined sheet. It is well known that liquid membranes are inextricably linked to urea crystals. Especially in the case of large flow conditions, this liquid film is extremely easy to form urea crystals.
因此，有必要提供一种新型的混合器及其混合组件，以解决上述技术问题。Therefore, it is necessary to provide a novel mixer and a hybrid assembly thereof to solve the above technical problems.
发明内容Summary of the invention
本发明的目的在于提供一种不易形成尿素结晶的混合器及其混合组件。It is an object of the present invention to provide a mixer which is less prone to form urea crystals and a mixing assembly therefor.
为实现上述目的，本发明采用如下技术方案：一种混合器，用以将尿素液滴与发动机的排气进行混合，所述混合器包括支撑部以及固定于所述支撑部上的至少一个板片，所述板片包括向排气方向的下游倾斜延伸的倾斜部，所述倾斜部用以实现尿素液滴与发动机的排气的充分混合，所述板片还包括自所述倾斜部进一步向所述排气方向的下游水平延伸的尾翼。In order to achieve the above object, the present invention adopts the following technical solution: a mixer for mixing urea droplets with exhaust gas of an engine, the mixer including a support portion and at least one plate fixed to the support portion a sheet comprising an inclined portion extending obliquely downstream of the exhaust direction, the inclined portion for achieving sufficient mixing of the urea droplets with the exhaust of the engine, the sheet further comprising further from the inclined portion A tail fin that extends horizontally downstream of the exhaust direction.
作为本发明进一步改进的技术方案，所述板片包括板状部，所述倾斜部是自所述板状部延伸而成；所述板片为层叠设置的若干板片，所述若干板片包括第一板片，所述第一板片包括水平延伸的第一板状部、自所述第一板状部向所述排气方向的下游倾斜延伸的第一倾斜部以及自所述第一倾斜部进一步向所述排气方向的下游水平延伸的第一尾翼。As a further improvement of the technical solution of the present invention, the plate comprises a plate portion, the inclined portion is formed from the plate portion; the plate is a plurality of plates arranged in a stack, the plurality of plates The first plate includes a first plate-shaped portion extending horizontally, a first inclined portion extending obliquely from the first plate-shaped portion toward a downstream side of the exhausting direction, and An inclined portion further extends to the first tail extending horizontally downstream of the exhaust direction.
作为本发明进一步改进的技术方案，所述第一板状部设有向上冲压形成的若干第一翅片，这些第一翅片沿所述排气方向陈列为三排。 As a further improved technical solution of the present invention, the first plate portion is provided with a plurality of first fins formed by upward punching, and the first fins are displayed in three rows along the exhaust direction.
作为本发明进一步改进的技术方案，所述第一倾斜部完全延伸超出所述支撑部，所述第一尾翼与所述第一板状部平行。As a further improvement of the present invention, the first inclined portion extends completely beyond the support portion, and the first tail portion is parallel to the first plate portion.
作为本发明进一步改进的技术方案，所述若干板片包括位于所述第一板片下方的第二板片，所述第二板片包括水平延伸的第二板状部、自所述第二板状部向所述排气方向的下游倾斜延伸的第二倾斜部以及自所述第二倾斜部进一步向所述排气方向的下游水平延伸的第二尾翼。As a further improvement of the technical solution of the present invention, the plurality of plates comprise a second plate below the first plate, the second plate comprises a second plate portion extending horizontally, from the second a second inclined portion that extends obliquely downstream of the exhaust direction and a second tail that extends horizontally downstream from the second inclined portion toward the exhaust direction.
作为本发明进一步改进的技术方案，所述第二板状部比所述第一板状部宽，所述第二板状部设有向上冲压形成的若干第二翅片，这些第二翅片沿所述排气方向陈列为两排。As a further improvement of the present invention, the second plate portion is wider than the first plate portion, and the second plate portion is provided with a plurality of second fins formed by upward punching, the second fins They are displayed in two rows along the exhaust direction.
作为本发明进一步改进的技术方案，所述第二倾斜部完全延伸超出所述支撑部，所述第二尾翼与所述第二板状部平行，所述第一尾翼在竖直方向上位于所述第一板状部与所述第二板状部之间。As a further improved technical solution of the present invention, the second inclined portion completely extends beyond the support portion, the second tail fin is parallel to the second plate portion, and the first tail wing is located in a vertical direction Between the first plate portion and the second plate portion.
作为本发明进一步改进的技术方案，所述若干板片包括位于所述第二板片下方的第三板片，所述第三板片包括水平延伸的第三板状部、自所述第三板状部向所述排气方向的下游倾斜延伸的第三倾斜部以及自所述第三倾斜部进一步向所述排气方向的下游水平延伸的第三尾翼。As a further improvement of the technical solution of the present invention, the plurality of plates comprise a third plate below the second plate, the third plate comprising a horizontally extending third plate portion, from the third a third inclined portion that extends obliquely downstream of the exhaust direction and a third tail that extends horizontally downstream from the third inclined portion toward the exhaust direction.
作为本发明进一步改进的技术方案，所述第三板状部未设有翅片，所述第三倾斜部部分延伸超出所述支撑部，所述第三尾翼与所述第三板状部平行；所述第二尾翼沿所述排气方向超出所述第一尾翼，所述第一尾翼沿所述排气方向超出所述第三尾翼。As a further improvement of the technical solution of the present invention, the third plate portion is not provided with a fin, the third inclined portion extends beyond the support portion, and the third tail portion is parallel to the third plate portion The second empennage extends beyond the first empennage in the exhaust direction, and the first empennage extends beyond the third empennage in the exhaust direction.
作为本发明进一步改进的技术方案，所述若干板片包括位于所述第三板片下方的第四板片，所述第四板片包括水平延伸的第四板状部、自所述第四板状部向所述排气方向的下游倾斜延伸的第四倾斜部以及自所述第四倾斜部进一步向所述排气方向的下游水平延伸的第四尾翼。As a further improvement of the technical solution of the present invention, the plurality of plates comprise a fourth plate below the third plate, the fourth plate comprises a fourth plate portion extending horizontally, from the fourth a fourth inclined portion that extends obliquely downstream of the exhaust direction and a fourth tail that extends horizontally downstream from the fourth inclined portion toward the exhaust direction.
作为本发明进一步改进的技术方案，所述第四板状部未设有翅片，所述第四倾斜部部分延伸超出所述支撑部，所述第四尾翼与所述第四板状部平行；所述第二尾翼沿所述排气方向超出所述第四尾翼，所述第四尾翼沿所述排气方向超出所述第三尾翼。As a further improved technical solution of the present invention, the fourth plate portion is not provided with fins, the fourth inclined portion extends beyond the support portion, and the fourth tail portion is parallel to the fourth plate portion The second empennage extends beyond the fourth empennage in the exhaust direction, and the fourth empennage extends beyond the third empennage in the exhaust direction.
作为本发明进一步改进的技术方案，所述第三倾斜部与所述第四倾斜部的延伸倾斜方向不同；所述第三倾斜部设有位于中间的开口，所述第四倾斜部延伸穿过所述开口，使所述第三倾斜部与所述第四倾斜部形成交叉。As a further improved technical solution of the present invention, the third inclined portion is different from the extending oblique direction of the fourth inclined portion; the third inclined portion is provided with an opening at the middle, and the fourth inclined portion extends through The opening intersects the third inclined portion with the fourth inclined portion.
作为本发明进一步改进的技术方案，所述第一倾斜部、所述第二倾斜部以及所述第三倾斜部均向右下角方向延伸，所述第四倾斜部向右上角方向延伸。According to a further improvement of the present invention, the first inclined portion, the second inclined portion, and the third inclined portion both extend in a lower right corner direction, and the fourth inclined portion extends in an upper right corner direction.
作为本发明进一步改进的技术方案，所述若干板片包括位于所述第四板片下方的第五板片，所述第五板片包括水平延伸的第五板状部、自所述第五板状部向所述排气方向的下游倾斜延伸的第五倾斜部以及自所述第五倾斜部进一步向所述排气方向的下游水平延伸的第五尾翼，所述第五倾斜部向右上角方向延伸，且平行于所述第四倾斜部。 As a further improved technical solution of the present invention, the plurality of plates comprise a fifth plate below the fourth plate, the fifth plate comprising a fifth plate portion extending horizontally, from the fifth a fifth inclined portion extending obliquely downstream of the exhaust portion in the exhaust direction and a fifth tail extending horizontally downstream from the fifth inclined portion toward the exhaust direction, the fifth inclined portion being rightward The angular direction extends and is parallel to the fourth inclined portion.
作为本发明进一步改进的技术方案，所述第五板状部未设有翅片，所述第五倾斜部至少部分延伸超出所述支撑部，所述第五尾翼与所述第五板状部平行。As a further improved technical solution of the present invention, the fifth plate portion is not provided with a fin, and the fifth inclined portion at least partially extends beyond the support portion, the fifth tail portion and the fifth plate portion parallel.
作为本发明进一步改进的技术方案，所述混合器还包括固定于所述支撑部上且位于所述第五板片下方的横板，所述横板包括凸出所述支撑部的一侧的第一凸出部以及凸出所述支撑部的另一侧的第二凸出部，所述第一凸出部包括向左下方向凸出的第一倾斜片以及位于所述第一倾斜片的后方且自所述第一凸出部的两侧向上延伸的弯折部；所述第二凸出部包括向右上方向凸出的第二倾斜片。As a further improved technical solution of the present invention, the mixer further includes a horizontal plate fixed on the support portion and located under the fifth plate, the horizontal plate including a side protruding from the support portion a first protruding portion and a second protruding portion protruding from the other side of the supporting portion, the first protruding portion including a first inclined piece protruding in a lower left direction and the first inclined piece located at the first inclined piece a rear portion and a bent portion extending upward from both sides of the first protruding portion; the second protruding portion includes a second inclined piece that protrudes in an upper right direction.
本发明还涉及一种混合组件，其包括混合管、位于所述混合管内的混合器以及位于所述混合管内且位于所述混合器下游的混合元件，其中，所述混合器为前述的混合器，所述混合元件为另一混合器或者开孔隔板。The invention also relates to a mixing assembly comprising a mixing tube, a mixer located within the mixing tube, and a mixing element located within the mixing tube and downstream of the mixer, wherein the mixer is the aforementioned mixer The mixing element is another mixer or an open cell separator.
相较于现有技术，本发明通过在混合器的板片上增加水平的尾翼，从而使气流能够平稳的通过，减少了回流，降低了形成液膜的风险，不易形成尿素结晶。Compared with the prior art, the present invention allows a smooth flow of airflow by adding a horizontal tail to the plate of the mixer, reduces backflow, reduces the risk of forming a liquid film, and is difficult to form urea crystals.
附图说明DRAWINGS
图1是本发明混合组件在第一实施方式中的立体示意图。BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a mixing assembly of the present invention in a first embodiment.
图2是图1的立体分解图。Fig. 2 is an exploded perspective view of Fig. 1;
图3是图2另一角度的立体分解图。Figure 3 is an exploded perspective view of another angle of Figure 2.
图4是本发明的混合器在第一实施方式中的立体示意图。Figure 4 is a perspective view of the mixer of the present invention in the first embodiment.
图5是图4的主视图；Figure 5 is a front elevational view of Figure 4;
图6是沿图4中某一角度的剖视图；Figure 6 is a cross-sectional view taken along an angle of Figure 4;
图7是图4的左视图；Figure 7 is a left side view of Figure 4;
图8是图4的右视图；Figure 8 is a right side view of Figure 4;
图9是本发明的混合器的部分立体分解图。Figure 9 is a partially exploded perspective view of the mixer of the present invention.
图10是本发明的混合器的板片以及横板的分解图；Figure 10 is an exploded view of the sheet and the cross plate of the mixer of the present invention;
图11是本发明的混合元件在第一实施方式中的立体示意图。Figure 11 is a perspective view of the mixing element of the present invention in the first embodiment.
图12是图11的主视图；Figure 12 is a front elevational view of Figure 11;
图13是沿图11中某一角度的剖视图；Figure 13 is a cross-sectional view taken along an angle of Figure 11;
图14是图11的左视图；Figure 14 is a left side view of Figure 11;
图15是本发明的混合元件的部分立体分解图。Figure 15 is a partially exploded perspective view of the mixing element of the present invention.
图16是本发明混合组件在第二实施方式中的立体示意图。Figure 16 is a perspective view of the mixing assembly of the present invention in a second embodiment.
图17是图16的立体分解图。Figure 17 is an exploded perspective view of Figure 16 .
图18是本发明的混合器在第二实施方式中的立体示意图。Figure 18 is a perspective view of the mixer of the present invention in the second embodiment.
图19是本发明的混合器的板片以及横板的分解图；Figure 19 is an exploded view of the sheet and the cross plate of the mixer of the present invention;
图20是本发明的混合器的主视图；Figure 20 is a front elevational view of the mixer of the present invention;
图21是沿图18中某一角度的剖视图； Figure 21 is a cross-sectional view taken along an angle of Figure 18;
图22是图18的左视图；Figure 22 is a left side view of Figure 18;
图23是图18的右视图；Figure 23 is a right side view of Figure 18;
图24是未添加尾翼以及添加尾翼的对比图。Figure 24 is a comparison of the addition of the tail fin and the addition of the tail fin.
具体实施方式detailed description
请参图1至图3所示，本发明揭示一种混合组件100，其包括混合管1、位于所述混合管1内的混合器2以及位于所述混合管1内且位于所述混合器2下游的混合元件。请参图2及图3所示，在本发明的第一实施方式中，所述混合元件为另一混合器3。所述混合管1上设有尿素喷嘴安装部11用以安装尿素喷嘴(未图示)，所述混合器2以及另一混合器3均位于所述尿素喷嘴安装部11的下游。可以理解的是，当将本发明的混合组件100安装于尾气后处理***中时，在所述混合组件100的上游可以设置有氧化催化器(DOC)及/或柴油颗粒捕集器(DPF)，在所述混合组件100的下游可以设置有选择性催化还原(SCR)。Referring to Figures 1 to 3, the present invention discloses a mixing assembly 100 comprising a mixing tube 1, a mixer 2 located in the mixing tube 1, and a mixer located in the mixing tube 1 and located in the mixer. 2 downstream mixing elements. Referring to FIG. 2 and FIG. 3, in the first embodiment of the present invention, the mixing element is another mixer 3. The mixing pipe 1 is provided with a urea nozzle mounting portion 11 for mounting a urea nozzle (not shown), and the mixer 2 and the other mixer 3 are located downstream of the urea nozzle mounting portion 11. It will be appreciated that when the mixing assembly 100 of the present invention is installed in an exhaust aftertreatment system, an oxidation catalyst (DOC) and/or a diesel particulate trap (DPF) may be disposed upstream of the mixing assembly 100. A selective catalytic reduction (SCR) may be disposed downstream of the mixing assembly 100.
工作时，尿素喷嘴将雾化的尿素溶液喷入混合管，排气与尿素液滴通过混合器2进行第一次混合，并通过混合元件进行第二次混合。作为本发明的一种实施方式，混合之后的均匀的混合物流经选择性催化还原(SCR)使之发生反应，以降低氮氧化物的含量。In operation, the urea nozzle sprays the atomized urea solution into the mixing tube, and the exhaust gas and the urea droplets are first mixed by the mixer 2 and mixed for a second time by the mixing element. As an embodiment of the present invention, the homogeneous mixture after mixing is subjected to selective catalytic reduction (SCR) to cause a reaction to reduce the content of nitrogen oxides.
请参图4至图10所示，所述混合器2用以将尿素液滴与发动机的排气进行混合。所述混合器2包括支撑部20以及固定于所述支撑部20上的至少一个板片。当本发明的混合器2应用于空气辅助式的尿素喷射***中时，一个板片是可行的。当然，在本发明图示的实施方式中，所述板片为层叠设置的若干板片，所述板片包括沿竖直方向依次层叠设置的第一板片21、第二板片22、第三板片23、第四板片24以及第五板片25。Referring to Figures 4 to 10, the mixer 2 is used to mix urea droplets with the exhaust of the engine. The mixer 2 includes a support portion 20 and at least one plate fixed to the support portion 20. When the mixer 2 of the present invention is applied to an air-assisted urea injection system, a sheet is feasible. Of course, in the illustrated embodiment of the present invention, the plate is a plurality of plates which are stacked, and the plate includes a first plate 21, a second plate 22, and a second layer which are sequentially stacked in a vertical direction. The three sheets 23, the fourth sheets 24, and the fifth sheets 25 are provided.
所述第一板片21包括位于所述支撑部20内且水平延伸的第一板状部211、自所述第一板状部211向所述排气方向的下游倾斜延伸的第一倾斜部212以及自所述第一倾斜部212进一步向所述排气方向的下游水平延伸的第一尾翼213。所述第一板状部211设有向上冲压形成的若干第一翅片2111，这些第一翅片2111沿所述排气方向陈列为三排。所述第一倾斜部212完全延伸超出所述支撑部20，所述第一尾翼213与所述第一板状部211平行。The first plate 21 includes a first plate portion 211 extending horizontally in the support portion 20 and a first inclined portion extending obliquely from the first plate portion 211 toward the downstream of the exhaust direction. 212 and a first tail 213 extending horizontally from the first inclined portion 212 to the downstream of the exhaust direction. The first plate portion 211 is provided with a plurality of first fins 2111 formed by upward punching, and the first fins 2111 are displayed in three rows along the exhaust direction. The first inclined portion 212 extends completely beyond the support portion 20 , and the first tail 213 is parallel to the first plate portion 211 .
所述第二板片22包括位于所述支撑部20内且水平延伸的第二板状部221、自所述第二板状部221向所述排气方向的下游倾斜延伸的第二倾斜部222以及自所述第二倾斜部222进一步向所述排气方向的下游水平延伸的第二尾翼223。所述第二板状部221比所述第一板状部211宽，所述第二板状部221设有向上冲压形成的若干第二翅片2211，这些第二翅片2211沿所述排气方向陈列为两排。请参图6所示，所述第二倾斜部222完全延伸超出所述支撑部20，所述第二尾翼223与所述第二板状部221平行，所述第一尾翼213在竖直方向上位于所述第一板状部211与所述第二板状部221之间。The second plate 22 includes a second plate portion 221 extending horizontally in the support portion 20 and a second inclined portion extending obliquely from the second plate portion 221 toward the downstream of the exhaust direction. 222 and a second tail 223 extending horizontally from the second inclined portion 222 to the downstream of the exhaust direction. The second plate portion 221 is wider than the first plate portion 211, and the second plate portion 221 is provided with a plurality of second fins 2211 formed by upward pressing, and the second fins 2211 are along the row The gas direction is displayed in two rows. Referring to FIG. 6, the second inclined portion 222 extends completely beyond the support portion 20, the second tail 223 is parallel to the second plate portion 221, and the first tail 213 is in a vertical direction. The upper portion is located between the first plate portion 211 and the second plate portion 221 .
所述第三板片23包括位于所述支撑部20内且水平延伸的第三板状部231、自所述第三板状部231向所述排气方向的下游倾斜延伸的第三倾斜部232以及自所述第三倾斜部232进一步向所述排气方向的下游水平延伸的第三尾翼233。所述第三板状部231未设有翅片， 所述第三倾斜部232部分延伸超出所述支撑部20，所述第三尾翼233与所述第三板状部231平行；所述第二尾翼223沿所述排气方向超出所述第一尾翼213，所述第一尾翼213沿所述排气方向超出所述第三尾翼233。The third plate 23 includes a third plate portion 231 extending horizontally in the support portion 20 and a third inclined portion extending obliquely from the third plate portion 231 toward the downstream of the exhaust direction. 232 and a third tail 233 extending horizontally from the third inclined portion 232 to the downstream of the exhaust direction. The third plate portion 231 is not provided with fins. The third inclined portion 232 partially extends beyond the support portion 20, the third tail 233 is parallel to the third plate portion 231; the second tail 223 extends beyond the first in the exhaust direction The tail fin 213 extends beyond the third tail 233 in the exhaust direction.
所述第四板片24包括位于所述支撑部20内且水平延伸的第四板状部241、自所述第四板状部241向所述排气方向的下游倾斜延伸的第四倾斜部242以及自所述第四倾斜部242进一步向所述排气方向的下游水平延伸的第四尾翼243。所述第四板状部241未设有翅片，所述第四倾斜部242部分延伸超出所述支撑部20，所述第四尾翼243与所述第四板状部241平行；所述第二尾翼223沿所述排气方向超出所述第四尾翼243，所述第四尾翼243沿所述排气方向超出所述第三尾翼233。所述第三倾斜部232与所述第四倾斜部242的延伸倾斜方向不同；所述第三倾斜部232设有位于中间的开口2321，所述第四倾斜部242延伸穿过所述开口2321，使所述第三倾斜部232与所述第四倾斜部242形成交叉。The fourth plate 24 includes a fourth plate portion 241 extending horizontally in the support portion 20 and a fourth inclined portion extending obliquely from the fourth plate portion 241 toward the downstream of the exhaust direction. 242 and a fourth tail fin 243 extending horizontally from the fourth inclined portion 242 to the downstream of the exhaust direction. The fourth plate portion 241 is not provided with fins, the fourth inclined portion 242 partially extends beyond the support portion 20, and the fourth tail portion 243 is parallel to the fourth plate portion 241; The two tail fins 223 extend beyond the fourth tail fin 243 in the exhaust direction, and the fourth tail fin 243 extends beyond the third tail fin 233 in the exhaust direction. The third inclined portion 232 is different from the extending oblique direction of the fourth inclined portion 242; the third inclined portion 232 is provided with an opening 2321 located in the middle, and the fourth inclined portion 242 extends through the opening 2321 The third inclined portion 232 and the fourth inclined portion 242 are formed to intersect.
所述第五板片25包括位于所述支撑部20内且水平延伸的第五板状部251、自所述第五板状部251向所述排气方向的下游倾斜延伸的第五倾斜部252以及自所述第五倾斜部252进一步向所述排气方向的下游水平延伸的第五尾翼253，所述第五倾斜部252向右上角方向延伸，且平行于所述第四倾斜部242。所述第五板状部251未设有翅片，所述第五倾斜部252至少部分延伸超出所述支撑部20，所述第五尾翼253与所述第五板状部251平行。The fifth plate 25 includes a fifth plate portion 251 extending horizontally in the support portion 20 and a fifth inclined portion extending obliquely from the fifth plate portion 251 toward the downstream of the exhaust direction. 252 and a fifth tail 253 extending horizontally from the fifth inclined portion 252 to the downstream of the exhaust direction, the fifth inclined portion 252 extending in the upper right direction and parallel to the fourth inclined portion 242 . The fifth plate portion 251 is not provided with fins, and the fifth inclined portion 252 at least partially extends beyond the support portion 20, and the fifth tail portion 253 is parallel to the fifth plate portion 251.
请参图6所示，所述第一倾斜部213、所述第二倾斜部222以及所述第三倾斜部232均向右下角方向延伸，所述第四倾斜部242以及所述第五倾斜部252向右上角方向延伸。Referring to FIG. 6 , the first inclined portion 213 , the second inclined portion 222 , and the third inclined portion 232 all extend in a right lower corner direction, the fourth inclined portion 242 and the fifth inclined portion. The portion 252 extends in the upper right direction.
另外，请参图4至图6以及图9至图10所示，所述混合器2还包括固定于所述支撑部20上且位于所述第五板片25下方的横板26。所述横板26包括凸出所述支撑部20的一侧(例如左侧)的第一凸出部261以及凸出所述支撑部20的另一侧(例如右侧)的第二凸出部262。所述第一凸出部261包括向左下方向凸出的第一倾斜片2611以及位于所述第一倾斜片2611的后方且自所述第一凸出部261的两侧向上延伸的弯折部2612；所述第二凸出部262包括向右上方向凸出的第二倾斜片2621。In addition, referring to FIG. 4 to FIG. 6 and FIG. 9 to FIG. 10 , the mixer 2 further includes a horizontal plate 26 fixed on the support portion 20 and located below the fifth plate 25 . The cross plate 26 includes a first protrusion 261 that protrudes from one side (for example, the left side) of the support portion 20 and a second protrusion that protrudes from the other side (for example, the right side) of the support portion 20 Part 262. The first protruding portion 261 includes a first inclined piece 2611 protruding in a lower left direction and a bent portion extending rearward of the first inclined piece 2611 and extending upward from both sides of the first protruding portion 261 The second protrusion 262 includes a second inclined piece 2621 that protrudes in the upper right direction.
为了便于描述，在本发明中，第一板状部211至第五板状部251统称为板状部；第一倾斜部212至第五倾斜部252统称为倾斜部；第一尾翼213至第五尾翼253统称为尾翼。其中，因为所述板状部呈水平延伸，所以其对排气及/或尿素液滴所形成的扰流较小，在某些实施方式中，可以不设置所述板状部。For convenience of description, in the present invention, the first plate-shaped portion 211 to the fifth plate-like portion 251 are collectively referred to as a plate-like portion; the first inclined portion 212 to the fifth inclined portion 252 are collectively referred to as an inclined portion; the first rear wing 213 to the first The five-tailed wing 253 is collectively referred to as the tail. Wherein, since the plate-like portion extends horizontally, the turbulence formed by the exhaust gas and/or the urea droplets is small, and in some embodiments, the plate-shaped portion may not be provided.
使用时，尿素液滴与排气的混合物在所述第一翅片2111、第二翅片2211以及板状部的作用下，将混合物导引到所述倾斜部。所述倾斜部将混合物在倾斜部的后方形成交叉，实现尿素液滴与排气充分混合。In use, the mixture of urea droplets and exhaust gas directs the mixture to the inclined portion under the action of the first fin 2111, the second fin 2211, and the plate portion. The inclined portion forms a crossover of the mixture behind the inclined portion to achieve thorough mixing of the urea droplets with the exhaust gas.
所述倾斜部具有扰流的功能以将混合物混合均匀。所述第一倾斜部212至所述第五倾斜部252的倾斜角度、方向以及相互之间的位置关系是借助于CFD，优化之后得到的。另外，所述第一尾翼213至所述第五尾翼253的方向、长度以及相互之间的位置关系也是本发明区 别于现有技术的地方。The inclined portion has a function of spoiler to uniformly mix the mixture. The inclination angles, directions, and positional relationship of the first inclined portion 212 to the fifth inclined portion 252 are obtained by optimization by means of CFD. In addition, the direction, the length, and the positional relationship between the first and second tail fins 213 to 253 are also the regions of the present invention. Different from the existing technology.
将本发明具有尾翼的混合器以及不具有尾翼的混合器在如下工况下进行实验。The mixer of the present invention having a tail fin and the mixer without the tail fin were tested under the following conditions.
Figure PCTCN2016105817-appb-000001
Figure PCTCN2016105817-appb-000001
实验结果如下：The experimental results are as follows:
Figure PCTCN2016105817-appb-000002
Figure PCTCN2016105817-appb-000002
请参图24所示，本发明通过在混合器1的板片上增加水平的尾翼，从而使气流能够平稳的通过，减少了回流，降低了形成液膜的风险，不易形成尿素结晶。Referring to Fig. 24, the present invention allows a smooth flow of airflow by adding a horizontal tail to the plate of the mixer 1, reducing backflow, reducing the risk of forming a liquid film, and making it difficult to form urea crystals.
请参图11至图15所示，另一混合器3与所述混合器2类似，但是没有设置尾翼。另一混合器3包括第二支撑部30以及固定于所述第二支撑部30内的若干板片。所述板片包括沿竖直方向依次层叠的第六板片31、第七板片32、第八板片33、第九板片34以及第十板片35。每一板片设有若干翅片以及延伸出所述第二支撑部的倾斜部。Referring to Figures 11 through 15, another mixer 3 is similar to the mixer 2, but no tail is provided. The other mixer 3 includes a second support portion 30 and a plurality of plates fixed in the second support portion 30. The sheet includes a sixth sheet 31, a seventh sheet 32, an eighth sheet 33, a ninth sheet 34, and a tenth sheet 35 which are sequentially laminated in the vertical direction. Each of the plates is provided with a plurality of fins and an inclined portion extending from the second support portion.
请参图16至图23所示，本发明还揭示一种混合组件200，其包括混合管1、位于所述混合管1内的混合器4以及位于所述混合管1内且位于所述混合器4下游的混合元件。在本发明的第二实施方式中，所述混合元件为开孔隔板5。在本发明实施方式的描述中，同样的标号代表同样的结构。鉴于混合器4与混合器2大致相同，且本领域技术人员能够通过观察附图清楚的知晓两者之间的差异，在此不再赘述。Referring to Figures 16 to 23, the present invention also discloses a mixing assembly 200 comprising a mixing tube 1, a mixer 4 located in the mixing tube 1, and a mixing tube 1 located in the mixing tube 1 and located in the mixing Mixing element downstream of the device 4. In a second embodiment of the invention, the mixing element is an apertured partition 5. In the description of the embodiments of the present invention, the same reference numerals denote the same structures. In view of the fact that the mixer 4 and the mixer 2 are substantially identical, and those skilled in the art can clearly understand the difference between the two by observing the drawings, no further details are provided herein.
另外，以上实施例仅用于说明本发明而并非限制本发明所描述的技术方案，对本说明书的理解应该以所属技术领域的技术人员为基础，尽管本说明书参照上述的实施例对本发明已进行了详细的说明，但是，本领域的普通技术人员应当理解，所属技术领域的技术人员仍然可以对本发明进行修改或者等同替换，而一切不脱离本发明的精神和范围的技术方案及其改 进，均应涵盖在本发明的权利要求范围内。 In addition, the above embodiments are only for illustrating the present invention and are not intended to limit the technical solutions described in the present invention. The understanding of the present specification should be based on those skilled in the art, although the present specification has been carried out with reference to the above embodiments. DETAILED DESCRIPTION OF THE INVENTION However, those skilled in the art should understand that the invention may be modified or equivalently substituted without departing from the spirit and scope of the invention. It is intended to be included within the scope of the appended claims.

Claims (17)

  1. 一种混合器，用以将尿素液滴与发动机的排气进行混合，所述混合器包括支撑部以及固定于所述支撑部上的至少一个板片，所述板片包括向排气方向的下游倾斜延伸的倾斜部，所述倾斜部用以实现尿素液滴与发动机的排气的充分混合，其特征在于：所述板片还包括自所述倾斜部进一步向所述排气方向的下游水平延伸的尾翼。A mixer for mixing urea droplets with exhaust gas of an engine, the mixer including a support portion and at least one plate fixed to the support portion, the plate including the exhaust direction a slope extending obliquely downstream, the inclined portion for achieving sufficient mixing of the urea droplets with the exhaust of the engine, characterized in that the sheet further includes a downstream from the inclined portion further toward the exhaust direction Horizontally extending tail.
  2. 如权利要求1所述的混合器，其特征在于：所述板片包括板状部，所述倾斜部是自所述板状部延伸而成；所述板片为层叠设置的若干板片，所述若干板片包括第一板片，所述第一板片包括水平延伸的第一板状部、自所述第一板状部向所述排气方向的下游倾斜延伸的第一倾斜部以及自所述第一倾斜部进一步向所述排气方向的下游水平延伸的第一尾翼。The mixer according to claim 1, wherein said plate comprises a plate portion, said inclined portion being formed from said plate portion; said plate being a plurality of plates stacked in a stack, The plurality of plates include a first plate, the first plate including a first plate portion extending horizontally, and a first inclined portion extending obliquely from the first plate portion toward a downstream of the exhaust direction And a first tail extending horizontally from the first inclined portion to the downstream of the exhaust direction.
  3. 如权利要求2所述的混合器，其特征在于：所述第一板状部设有向上冲压形成的若干第一翅片，这些第一翅片沿所述排气方向陈列为三排。The mixer according to claim 2, wherein said first plate portion is provided with a plurality of first fins formed by upward punching, and said first fins are displayed in three rows along said exhaust direction.
  4. 如权利要求2所述的混合器，其特征在于：所述第一倾斜部完全延伸超出所述支撑部，所述第一尾翼与所述第一板状部平行。A mixer according to claim 2, wherein said first inclined portion extends completely beyond said support portion, said first tail portion being parallel to said first plate portion.
  5. 如权利要求2所述的混合器，其特征在于：所述若干板片包括位于所述第一板片下方的第二板片，所述第二板片包括水平延伸的第二板状部、自所述第二板状部向所述排气方向的下游倾斜延伸的第二倾斜部以及自所述第二倾斜部进一步向所述排气方向的下游水平延伸的第二尾翼。A mixer according to claim 2, wherein said plurality of plates comprise a second plate below said first plate, said second plate comprising a second plate portion extending horizontally, a second inclined portion that extends obliquely downstream from the second plate portion toward the exhaust direction and a second tail portion that extends horizontally further from the second inclined portion toward the downstream of the exhaust direction.
  6. 如权利要求5所述的混合器，其特征在于：所述第二板状部比所述第一板状部宽，所述第二板状部设有向上冲压形成的若干第二翅片，这些第二翅片沿所述排气方向陈列为两排。The mixer according to claim 5, wherein said second plate portion is wider than said first plate portion, and said second plate portion is provided with a plurality of second fins formed by upward punching. These second fins are displayed in two rows along the exhaust direction.
  7. 如权利要求5所述的混合器，其特征在于：所述第二倾斜部完全延伸超出所述支撑部，所述第二尾翼与所述第二板状部平行，所述第一尾翼在竖直方向上位于所述第一板状部与所述第二板状部之间。A mixer according to claim 5, wherein said second inclined portion extends completely beyond said support portion, said second rear wing is parallel to said second plate portion, and said first rear wing is vertical Located between the first plate portion and the second plate portion in the straight direction.
  8. 如权利要求5所述的混合器，其特征在于：所述若干板片包括位于所述第二板片下方的第三板片，所述第三板片包括水平延伸的第三板状部、自所述第三板状部向所述排气方向的下游倾斜延伸的第三倾斜部以及自所述第三倾斜部进一步向所述排气方向的下游水平延伸的第三尾翼。A mixer according to claim 5, wherein said plurality of plates comprise a third plate below said second plate, said third plate comprising a third plate portion extending horizontally, a third inclined portion that extends obliquely from the third plate portion toward the downstream of the exhaust direction and a third tail portion that extends horizontally from the third inclined portion to the downstream of the exhaust direction.
  9. 如权利要求8所述的混合器，其特征在于：所述第三板状部未设有翅片，所述第三倾斜部部分延伸超出所述支撑部，所述第三尾翼与所述第三板状部平行；所述第二尾翼沿所述排气方向超出所述第一尾翼，所述第一尾翼沿所述排气方向超出所述第三尾翼。A mixer according to claim 8, wherein said third plate portion is not provided with fins, said third inclined portion extending beyond said support portion, said third tail portion and said first The three slabs are parallel; the second empennage extends beyond the first empennage in the exhaust direction, and the first empennage extends beyond the third empennage in the exhaust direction.
  10. 如权利要求8所述的混合器，其特征在于：所述若干板片包括位于所述第三板片下方的第四板片，所述第四板片包括水平延伸的第四板状部、自所述第四板状部向所述排气方向的下游倾斜延伸的第四倾斜部以及自所述第四倾斜部进一步向所述排气方向的下游水平 延伸的第四尾翼。A mixer according to claim 8 wherein said plurality of panels comprise a fourth panel below said third panel, said fourth panel comprising a fourth panel extending horizontally, a fourth inclined portion extending obliquely from the fourth plate portion toward the downstream of the exhaust direction and a downstream level further from the fourth inclined portion toward the exhaust direction Extended fourth tail.
  11. 如权利要求10所述的混合器，其特征在于：所述第四板状部未设有翅片，所述第四倾斜部部分延伸超出所述支撑部，所述第四尾翼与所述第四板状部平行；所述第二尾翼沿所述排气方向超出所述第四尾翼，所述第四尾翼沿所述排气方向超出所述第三尾翼。A mixer according to claim 10, wherein said fourth plate portion is not provided with fins, said fourth inclined portion extends beyond said support portion, said fourth tail portion and said first The four slabs are parallel; the second empennage extends beyond the fourth empennage in the exhaust direction, and the fourth empennage extends beyond the third empennage in the exhaust direction.
  12. 如权利要求11所述的混合器，其特征在于：所述第三倾斜部与所述第四倾斜部的延伸倾斜方向不同；所述第三倾斜部设有位于中间的开口，所述第四倾斜部延伸穿过所述开口，使所述第三倾斜部与所述第四倾斜部形成交叉。The mixer according to claim 11, wherein said third inclined portion is different from an extending oblique direction of said fourth inclined portion; said third inclined portion is provided with an opening in the middle, said fourth The inclined portion extends through the opening such that the third inclined portion and the fourth inclined portion intersect.
  13. 如权利要求11所述的混合器，其特征在于：所述第一倾斜部、所述第二倾斜部以及所述第三倾斜部均向右下角方向延伸，所述第四倾斜部向右上角方向延伸。The mixer according to claim 11, wherein said first inclined portion, said second inclined portion, and said third inclined portion both extend in a lower right corner direction, said fourth inclined portion to an upper right corner The direction extends.
  14. 如权利要求13所述的混合器，其特征在于：所述若干板片包括位于所述第四板片下方的第五板片，所述第五板片包括水平延伸的第五板状部、自所述第五板状部向所述排气方向的下游倾斜延伸的第五倾斜部以及自所述第五倾斜部进一步向所述排气方向的下游水平延伸的第五尾翼，所述第五倾斜部向右上角方向延伸，且平行于所述第四倾斜部。A mixer according to claim 13 wherein said plurality of panels comprise a fifth panel below said fourth panel, said fifth panel comprising a fifth panel extending horizontally, a fifth inclined portion extending obliquely from the fifth plate portion toward the downstream of the exhaust direction, and a fifth tail portion extending horizontally from the fifth inclined portion to the downstream of the exhaust direction, the first The five inclined portions extend in the upper right corner direction and are parallel to the fourth inclined portion.
  15. 如权利要求14所述的混合器，其特征在于：所述第五板状部未设有翅片，所述第五倾斜部至少部分延伸超出所述支撑部，所述第五尾翼与所述第五板状部平行。A mixer according to claim 14 wherein said fifth plate portion is not provided with fins, said fifth inclined portion extending at least partially beyond said support portion, said fifth tail portion being said The fifth plate-like portion is parallel.
  16. 如权利要求14所述的混合器，其特征在于：所述混合器还包括固定于所述支撑部上且位于所述第五板片下方的横板，所述横板包括凸出所述支撑部的一侧的第一凸出部以及凸出所述支撑部的另一侧的第二凸出部，所述第一凸出部包括向左下方向凸出的第一倾斜片以及位于所述第一倾斜片的后方且自所述第一凸出部的两侧向上延伸的弯折部；所述第二凸出部包括向右上方向凸出的第二倾斜片。A mixer according to claim 14 wherein said mixer further comprises a transverse plate secured to said support portion and below said fifth plate, said transverse plate comprising said support a first protruding portion on one side of the portion and a second protruding portion protruding from the other side of the supporting portion, the first protruding portion including a first inclined piece protruding in a lower left direction and located at the a bent portion extending rearward of the first inclined piece and extending from both sides of the first protruding portion; the second protruding portion includes a second inclined piece that protrudes in an upper right direction.
  17. 一种混合组件，其包括混合管、位于所述混合管内的混合器以及位于所述混合管内且位于所述混合器下游的混合元件，其特征在于：所述混合器为权利要求1至16项中任意一项所述的混合器，所述混合元件为另一混合器或者开孔隔板。 A mixing assembly comprising a mixing tube, a mixer located within the mixing tube, and a mixing element located within the mixing tube and downstream of the mixer, wherein the mixer is in accordance with claims 1 to 16. In the mixer of any of the preceding claims, the mixing element is another mixer or an apertured separator.
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