WO2018045883A1 - Mixing chamber assembly - Google Patents

Mixing chamber assembly Download PDF

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Publication number
WO2018045883A1
WO2018045883A1 PCT/CN2017/099080 CN2017099080W WO2018045883A1 WO 2018045883 A1 WO2018045883 A1 WO 2018045883A1 CN 2017099080 W CN2017099080 W CN 2017099080W WO 2018045883 A1 WO2018045883 A1 WO 2018045883A1
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WO
WIPO (PCT)
Prior art keywords
hollow portion
fin
sub
mixing chamber
cavity
Prior art date
Application number
PCT/CN2017/099080
Other languages
French (fr)
Chinese (zh)
Inventor
王聪
孙小冈
彭宇
Original Assignee
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 WO2018045883A1 publication Critical patent/WO2018045883A1/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
    • 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
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/16—Chambers with particular shapes, e.g. spherical
    • 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
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea

Definitions

  • the invention relates to a mixing chamber assembly, belonging to the technical field of engine exhaust aftertreatment.
  • the uniformity of ammonia distribution in the exhaust aftertreatment system has an important impact on the overall performance and durability of the system. If the distribution of ammonia (NH 3 ) is uneven, the nitrogen oxide (NOx) conversion efficiency is too low, and if the urea injection amount is increased in order to satisfy the discharge performance, ammonia leakage contamination is likely to occur. At the same time, the urea droplets are easily deposited when they are exposed to a wall surface having a relatively low temperature, and when the crystal is severely formed, the exhaust pipe is blocked, resulting in a decrease in engine power performance. Increasing the mixing uniformity of ammonia molecules can effectively improve the urea utilization rate and reduce the urea injection amount, thereby reducing the risk of urea crystallization.
  • SCR system selective catalytic reduction system
  • a mixing chamber assembly for use in an engine exhaust aftertreatment device, the mixing chamber assembly including a cavity and a mounting hole for mounting a urea nozzle, the cavity a first sub-cavity for communicating with the first post-processing component, a second sub-cavity for communicating with the second post-processing component, and a first sub-cavity and the second sub-cavity a middle sub-cavity, wherein the first sub-cavity is located upstream of the exhaust gas flow direction than the second sub-cavity, and the urea nozzle is configured to inject urea droplets into the first sub-cavity
  • the mixing chamber assembly further includes a mixer located in the intermediate sub-cavity, the mixer is provided with a frame body and a plurality of fins disposed obliquely, wherein the frame body includes a first hollow portion in a substantially clockwise direction.
  • the mixer further comprising a first fin located in the first hollow portion, located in the second hollow Second fin in the department, located a third fin in the third hollow portion, a fourth fin located in the fourth hollow portion, a fifth fin located in the fifth hollow portion, and a sixth fin located in the sixth hollow portion,
  • the first fin, the second fin, the third fin, the fourth fin, the fifth fin, and the sixth fin are sequentially inclined in the hour hand direction.
  • the first hollow portion, the sixth hollow portion and the fifth hollow portion are arranged in a first row, and the second hollow portion, the third hollow portion and the fourth hollow portion are arranged in a row
  • the second row of the first row is parallel;
  • the first hollow portion and the second hollow portion are arranged in a first row, the sixth hollow portion and the third hollow portion are arranged in a second column, the fifth hollow portion and the fourth hollow portion The portions are arranged in a third column, wherein the second column is located between the first column and the third column.
  • the frame has a trapezoidal shape, and includes a first side, a second side, a third side and a fourth side connected to each other, wherein the first side is short
  • the third side is a long side.
  • the mixer includes a first partition wall erected on the second side edge and the fourth side edge, the first hollow portion, the sixth hollow portion, and the fifth The hollow portion is located at one side of the first partition wall, and the second hollow portion, the third hollow portion, and the fourth hollow portion are located on the other side of the first partition wall.
  • the mixer includes a plurality of second partition walls mounted on the first side, the first partition wall and the third side, and the second partition wall is provided with a third a sheet extending from one end of the third sheet, the sixth fin extending from the other end of the third sheet, the third fin and the sixth fin The tilt of the sheet is reversed.
  • the mixer includes a plurality of first plates erected on the second side and the second partition wall closest to the second side, the first wing The sheet extends from the first sheet.
  • the mixer includes a plurality of second plates erected on the second side and the second partition wall closest to the second side, the second wing The sheet extends from the second sheet.
  • the mixer includes a plurality of fourth plates erected on the fourth side wall and the second partition wall closest to the fourth side, the fourth wing The sheet extends from the fourth sheet.
  • the mixer includes a plurality of fifth plates erected on the fourth side wall and the second partition wall closest to the fourth side, the fifth wing The sheet extends from the fifth sheet.
  • the hour hand direction is a clockwise direction or a counterclockwise direction.
  • the mixing chamber assembly includes a main body portion and a cover plate that cooperates with the main body portion, the main body portion includes a side plate and a side wall extending from the side plate, the cover a plate is fixed on the side wall, the first sub-cavity, the second sub-cavity and the intermediate sub-cavity are formed by the main body portion and the cover plate; the cover plate includes the first sub-chamber a cavity communicating and corresponding to the first opening of the first after-treatment component and communicating with the second sub-cavity and corresponding to the first A second opening of the second processing component, the mounting aperture being located at a top end of the sidewall.
  • the mixing chamber assembly includes a baffle between the first post-processing component and the first sub-cavity, and the baffle is provided with a plurality of perforations.
  • the present invention provides a mixer of the above structure, and the urea droplets and the exhaust gas are mixed under the corresponding hollow portions and the turbulence of the fins, thereby improving the uniformity of mixing.
  • the flow of the gas flow in a limited space is increased, ensuring that the urea droplets are thoroughly mixed with the exhaust gas while ensuring that the urea droplets are sufficiently heated, thereby increasing the evaporation rate of the urea droplets, improving the uniformity of the distribution of the ammonia molecules, and reducing the crystallization of the urea. risk.
  • FIG. 1 is a perspective view of the mixing chamber assembly of the present invention assembled with a first aftertreatment component and a second aftertreatment component.
  • Figure 2 is a partial exploded perspective view of Figure 1 with the mixing chamber assembly separated.
  • Figure 3 is a partial exploded perspective view of the mixing chamber assembly of Figure 2 with the cover and baffle separated.
  • Figure 4 is a further exploded perspective view of Figure 3 with the mixer also separated.
  • Figure 5 is a perspective view of the mixing chamber assembly of Figure 2 at another angle.
  • Figure 6 is a front elevational view of the mixing chamber assembly of Figure 2.
  • Figure 7 is a side view of Figure 6.
  • Figure 8 is a perspective view of the mixing chamber assembly of Figure 2 with the cover removed and the baffle removed.
  • Figure 9 is a front elevational view of Figure 8.
  • Figure 10 is a perspective view of another angle of Figure 9 with the frame of the mixer removed.
  • Figure 11 is a perspective view of the mixer of Figure 8.
  • Figure 12 is a perspective view of another angle of Figure 11.
  • Figure 13 is a perspective view of another angle of Figure 12 .
  • Figure 14 is a perspective view of another angle of Figure 11 .
  • Figure 15 is a perspective view of another angle of Figure 14.
  • Figure 16 is an exploded perspective view of the mixer of Figure 8.
  • Figure 17 is an exploded perspective view of another angle of Figure 16;
  • the present invention discloses a mixing chamber assembly 100 for use in an engine exhaust aftertreatment device. Handle the exhaust of the engine.
  • the exhaust aftertreatment device may include a first aftertreatment component 200 located upstream of the mixing chamber assembly 100 and/or a second aftertreatment component 300 located downstream of the mixing chamber assembly 100.
  • the first aftertreatment component 200 may be an oxidation catalyst (DOC) or a combination of a DOC and a diesel particulate trap (DPF)
  • the second aftertreatment component 300 may be a selective catalytic reduction module (SCR).
  • DOC oxidation catalyst
  • DPF selective catalytic reduction module
  • SDPF DPF coated with an SCR catalyst can also be used in place of the DPF.
  • the shape of the exhaust aftertreatment device may be linear, U-shaped, Z-shaped, L-shaped, or the like.
  • DOC, DPF, SDPF, etc. can be designed as other types of catalysts or combinations according to actual needs, and details are not described herein again.
  • the mixing chamber assembly 100 includes a cavity 101 and a mixer 40 located within the cavity 101.
  • the cavity 101 includes a first sub-cavity 10, a second sub-cavity 20, and a middle sub-cavity 30 connecting the first sub-cavity 10 and the second sub-cavity 20.
  • the first sub-cavity 10 is located upstream of the exhaust gas flow direction than the second sub-cavity 20, and the mixer 40 is located in the intermediate sub-cavity 30.
  • the mixing chamber assembly 100 of the present invention includes a body portion 1 and a cover plate 2 that mates with the body portion 1.
  • the body portion 1 includes a side panel 11 and a side wall 12 extending from the side panel 11.
  • the cover plate 2 is fixed to the side wall 12 by, for example, welding.
  • the first sub-cavity 10, the second sub-cavity 20, and the intermediate sub-cavity 30 are formed by the main body portion 1 and the cover plate 2.
  • the side wall 12 is provided with a mounting hole 1213 for mounting a urea nozzle at a position near the top thereof.
  • the mounting hole 1213 is located at the upper left of the mixing chamber assembly 100, that is, at an angle to the center plane of the mixing chamber assembly 100.
  • the mixing chamber assembly 100 is provided with an inclined portion 50 between the first sub-cavity 10 and the second sub-cavity 20 in a thickness direction AA perpendicular to the exhaust gas flow direction to form a corresponding portion The neck 51 of the mixer 40.
  • the cover plate 2 includes a first plate portion 21 , a second plate portion 22 , and a tilt connecting the first plate portion 21 and the second plate portion 22 . Face 23.
  • the inclined surface portion 23 corresponds to the inclined portion 50.
  • the first plate portion 21 is provided with a first opening 211 communicating with the first sub-cavity 10 and corresponding to the first post-processing component 200
  • the second plate portion 22 is provided with the The second sub-cavity 20 is in communication and corresponds to the second opening 221 of the second after-treatment component 300.
  • the first opening 211 is an upstream exhaust inlet and the second opening 221 is a downstream exhaust outlet.
  • the mixer 40 is provided with a frame body 7 and a plurality of fins 8 disposed obliquely.
  • the frame body 7 includes a first hollow portion 71 and a second portion in a substantially clockwise direction.
  • the fin 8 is provided with a first fin 81 located in the first hollow portion 71, a second fin 82 located in the second hollow portion 72, and a portion located in the third hollow portion 73.
  • the hour hand direction is a counterclockwise direction indicated by an elliptical upper arrow, and of course, in other embodiments, it may be a clockwise direction.
  • the urea droplets and the exhaust gas are mixed under the corresponding hollow portions and the turbulence of the fins, thereby improving the uniformity of mixing and reducing the risk of urea crystallization.
  • the hollow portion divides the mixture of urea droplets and exhaust gas into approximately different regions, thereby improving the uniformity of the distribution.
  • the mixture can be formed into a swirling flow, thereby improving the uniformity of mixing. Referring to FIG. 9 and FIG. 10, the mixture is substantially formed on the inner and outer sides of the second sub-cavity 20 by the third fin 83 and the sixth fin 86 as shown in FIG. 9 and FIG.
  • the double swirl shown is shown to increase the mixing effect.
  • the first hollow portion 71, the sixth hollow portion 76, and the fifth hollow portion 75 are arranged in a first row, the second hollow portion 72, the third hollow portion 73, and the first The four hollow portions 74 are arranged in a second row parallel to the first row.
  • the first hollow portion 71 and the second hollow portion 72 are arranged in a first row, and the sixth hollow portion 76 and the third hollow portion 73 are arranged in a second column, and the fifth hollow portion 75 is The fourth hollow portions 74 are arranged in a third column, wherein the second column is located between the first column and the third column.
  • the frame body 7 is substantially trapezoidal, and includes a first side edge 701, a second side edge 702, a third side edge 703, and a fourth side edge 704 that are connected to each other.
  • the first side 701 is a short side
  • the third side 703 is a long side.
  • the mixer 40 includes a first partition wall 811 spanned on the second side 702 and the fourth side 704, the first hollow portion 71, the sixth hollow portion 76, and the fifth hollow portion 75. Located on one side of the first partition wall 811, the second hollow portion 72, the third hollow portion 73, and the fourth hollow portion 74 are located on the other side of the first partition wall 811.
  • the first partition wall 811 is provided with a vertical flat plate portion 8111 and a seventh fin 8112 extending in opposite directions from both ends of the flat plate portion 8111 and Eighth fin 8113.
  • the seventh fin 8112 has the same inclination direction as the first fin 81 and the second fin 82, and the eighth fin 8113 has the same inclination direction as the fourth fin 84 and the fifth fin 85.
  • the mixer 40 includes a plurality of second partition walls 821 spanned on the first side edge 701, the first partition wall 811 and the third side edge 703, and the second partition wall 821 is provided with a third plate 8211
  • the third fin 83 extends from one end of the third plate 8211 (for example, the front end in FIG. 16), and the sixth fin 86 is from the other end of the third plate 8211 (for example, FIG. 16
  • the rear end of the third fin 83 extends opposite to the oblique direction of the sixth fin 86.
  • the mixer 40 includes a plurality of first plates 810 spanned on the second side 702 and the second partition 821 closest to the second side 702, the first fins 81
  • the first plate 810 extends.
  • the mixer 40 includes a plurality of second plates 820 spanned on the second side 702 and the second partition 821 closest to the second side 702, the second fin 82 The second plate 820 extends.
  • the mixer 40 includes a plurality of fourth plates 840 spanned on the fourth side 704 and the second dividing wall 821 closest to the fourth side 704, the fourth fin 84
  • the fourth plate 840 extends.
  • the mixer 40 includes a plurality of fifth plates 850 mounted on the fourth side 704 and the second dividing wall 821 closest to the fourth side 704, the fifth fin 85 The fifth plate 850 extends.
  • the first plate 810, the second plate 820, the third plate 8211, the fourth plate 840, and the fifth plate 850 all extend in a lateral direction;
  • the 8111 extends longitudinally and is interdigitated with the transverse direction. Grooves are provided at the top ends of the frame body 7, the third plate piece 8211, and the flat plate portion 8111 for positioning corresponding plates.
  • the mixing chamber assembly 100 includes a baffle 6 between the first post-processing component 200 and the first sub-cavity 10 , and the baffle 6 is provided with a plurality of baffles 6 . Perforation 61.
  • the baffle 6 By providing the baffle 6, the deflection of the exhaust gas from the first after-treatment component 200 directly to the injected urea can be reduced, the mixing of the urea droplets and the exhaust gas can be improved, the evaporation rate of the urea droplets can be improved, and the ammonia distribution can be improved. Uniformity reduces the risk of urea crystallization.
  • the fins of the mixer 40 can also be arranged to be divided into inner and outer layers.
  • the direction of inclination of the fins of the inner layer is opposite to the direction of inclination of the fins of the outer layer, for example, the fins of the inner layer are inclined clockwise, and the fins of the outer layer are inclined counterclockwise, and vice versa.

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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 mixing chamber assembly (100) for use in an engine exhaust post-processing apparatus. The mixing chamber assembly (100) comprises a chamber (101) and a mounting hole (1213) used for mounting a urea nozzle. The chamber (101) comprises a first sub-chamber (10) used for communication with a first post-processing component (200), a second sub-chamber (20) used for communication with a second post-processing component (300), and an intermediate sub-chamber (30). The urea nozzle is used for spraying urea droplets into the first sub-chamber (10). The mixing chamber assembly (100) also comprises a mixer (40) located in the intermediate sub-chamber (30). The mixer (40) is provided with a frame (7) and several obliquely disposed fins (8). The frame (7) sequentially comprises several hollow parts (71, 72, 73, 74, 75, 76) and several fins (81, 82, 83, 84, 85, 86) located in the hollow parts (71, 72, 73, 74, 75, 76) approximately along the clockwise direction, the fins (81, 82, 83, 84, 85, 86) being sequentially oblique in the clockwise direction. Such configuration enhances the mixing between urea droplets and exhaust, improves the evaporation rate of the urea droplets, and reduces the risk of urea crystallization.

Description

混合腔组件Mixing chamber assembly
本申请要求了申请日为2016年9月7日、申请号为201610807090.4、发明名称为“混合腔组件”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。The present application claims priority to Chinese Patent Application No. Serial No. No. No. No. No. No. No. No. No. No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No
技术领域Technical field
本发明涉及一种混合腔组件，属于发动机排气后处理技术领域。The invention relates to a mixing chamber assembly, belonging 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。如果氨气(NH3)分布不均匀会导致氮氧化合物(NOx)转化效率过低，如果为了满足排放性能而增加尿素喷射量则易造成氨泄漏污染。同时尿素液滴在接触到温度较低的壁面时容易沉积，形成结晶严重时会堵塞排气管、导致发动机动力性能下降。提高氨气分子的混合均匀性可以有效提高尿素利用率，降低尿素喷射量从而降低尿素结晶的风险。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 distribution of ammonia (NH 3 ) is uneven, the nitrogen oxide (NOx) conversion efficiency is too low, and if the urea injection amount is increased in order to satisfy the discharge performance, ammonia leakage contamination is likely to occur. At the same time, the urea droplets are easily deposited when they are exposed to a wall surface having a relatively low temperature, and when the crystal is severely formed, the exhaust pipe is blocked, resulting in a decrease in engine power performance. Increasing the mixing uniformity of ammonia molecules can effectively improve the urea utilization rate and reduce the urea injection amount, thereby reducing the risk of urea crystallization.
因此，有必要提供一种能够提高氨气分子混合均匀性的混合腔组件以解决上述技术问题。Therefore, it is necessary to provide a mixing chamber assembly capable of improving the mixing uniformity of ammonia molecules 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能够使发动机的排气与尿素液滴混合均匀的混合腔组件。It is an object of the present invention to provide a mixing chamber assembly that is capable of mixing the exhaust of an engine with urea droplets.
为实现上述目的，本发明采用如下技术方案：一种混合腔组件，用于发动机排气后处理装置中，所述混合腔组件包括腔体以及用以安装尿素喷嘴的安装孔，所述腔体包括用以与第一后处理部件连通的第一子腔体、用以与第二后处理部件连通的第二子腔体以及连通所述第一子腔体与所述第二子腔体的中间子腔体，所述第一子腔体相较于所述第二子腔***于排气流动方向的上游，所述尿素喷嘴用以向所述第一子腔体内喷射尿素液滴，所述混合腔组件还包括位于所述中间子腔体内的混合器，所述混合器设有框体以及倾斜设置的若干翅片，其中所述框体内大致沿时针方向依次包括第一镂空部、第二镂空部、第三镂空部、第四镂空部、第五镂空部以及第六镂空部，所述混合器还设有位于所述第一镂空部内的第一翅片、位于所述第二镂空部内的第二翅片、位于所述第三镂空部内的第三翅片、位于所述第四镂空部内的第四翅片、位于所述第五镂空部内的第五翅片以及位于所述第六镂空部内的第六翅片，其中所述第一翅片、第二翅片、第三翅片、第四翅片、第五翅片以及第六翅片沿所述时针方向依次倾斜。 To achieve the above object, the present invention adopts the following technical solution: a mixing chamber assembly for use in an engine exhaust aftertreatment device, the mixing chamber assembly including a cavity and a mounting hole for mounting a urea nozzle, the cavity a first sub-cavity for communicating with the first post-processing component, a second sub-cavity for communicating with the second post-processing component, and a first sub-cavity and the second sub-cavity a middle sub-cavity, wherein the first sub-cavity is located upstream of the exhaust gas flow direction than the second sub-cavity, and the urea nozzle is configured to inject urea droplets into the first sub-cavity The mixing chamber assembly further includes a mixer located in the intermediate sub-cavity, the mixer is provided with a frame body and a plurality of fins disposed obliquely, wherein the frame body includes a first hollow portion in a substantially clockwise direction. a second hollow portion, a third hollow portion, a fourth hollow portion, a fifth hollow portion, and a sixth hollow portion, the mixer further comprising a first fin located in the first hollow portion, located in the second hollow Second fin in the department, located a third fin in the third hollow portion, a fourth fin located in the fourth hollow portion, a fifth fin located in the fifth hollow portion, and a sixth fin located in the sixth hollow portion, The first fin, the second fin, the third fin, the fourth fin, the fifth fin, and the sixth fin are sequentially inclined in the hour hand direction.
作为本发明进一步改进的技术方案，所述第一镂空部、第六镂空部以及第五镂空部排成第一行，所述第二镂空部、第三镂空部以及第四镂空部排成与所述第一行平行的第二行；As a further improved technical solution of the present invention, the first hollow portion, the sixth hollow portion and the fifth hollow portion are arranged in a first row, and the second hollow portion, the third hollow portion and the fourth hollow portion are arranged in a row The second row of the first row is parallel;
所述第一镂空部与所述第二镂空部排列成第一列，所述第六镂空部与所述第三镂空部排列成第二列，所述第五镂空部与所述第四镂空部排列成第三列，其中所述第二列位于所述第一列于所述第三列之间。The first hollow portion and the second hollow portion are arranged in a first row, the sixth hollow portion and the third hollow portion are arranged in a second column, the fifth hollow portion and the fourth hollow portion The portions are arranged in a third column, wherein the second column is located between the first column and the third column.
作为本发明进一步改进的技术方案，所述框体呈梯形，其包括相互连接的第一侧边、第二侧边、第三侧边以及第四侧边，其中所述第一侧边为短边，所述第三侧边为长边。As a further improvement of the technical solution of the present invention, the frame has a trapezoidal shape, and includes a first side, a second side, a third side and a fourth side connected to each other, wherein the first side is short The third side is a long side.
作为本发明进一步改进的技术方案，所述混合器包括架设在所述第二侧边与所述第四侧边上的第一分隔壁，所述第一镂空部、第六镂空部以及第五镂空部位于所述第一分隔壁的一侧，所述第二镂空部、第三镂空部以及第四镂空部位于所述第一分隔壁的另一侧。As a further improved technical solution of the present invention, the mixer includes a first partition wall erected on the second side edge and the fourth side edge, the first hollow portion, the sixth hollow portion, and the fifth The hollow portion is located at one side of the first partition wall, and the second hollow portion, the third hollow portion, and the fourth hollow portion are located on the other side of the first partition wall.
作为本发明进一步改进的技术方案，所述混合器包括架设在所述第一侧边、第一分隔壁以及第三侧边上的若干第二分隔壁，所述第二分隔壁设有第三板片，所述第三翅片自所述第三板片的一端延伸，所述第六翅片自所述第三板片的另一端延伸，所述第三翅片与所述第六翅片的倾斜方向相反。As a further improved technical solution of the present invention, the mixer includes a plurality of second partition walls mounted on the first side, the first partition wall and the third side, and the second partition wall is provided with a third a sheet extending from one end of the third sheet, the sixth fin extending from the other end of the third sheet, the third fin and the sixth fin The tilt of the sheet is reversed.
作为本发明进一步改进的技术方案，所述混合器包括架设在所述第二侧边以及最靠近所述第二侧边的那个第二分隔壁上的若干第一板片，所述第一翅片自所述第一板片延伸。As a further improved technical solution of the present invention, the mixer includes a plurality of first plates erected on the second side and the second partition wall closest to the second side, the first wing The sheet extends from the first sheet.
作为本发明进一步改进的技术方案，所述混合器包括架设在所述第二侧边以及最靠近所述第二侧边的那个第二分隔壁上的若干第二板片，所述第二翅片自所述第二板片延伸。As a further improved technical solution of the present invention, the mixer includes a plurality of second plates erected on the second side and the second partition wall closest to the second side, the second wing The sheet extends from the second sheet.
作为本发明进一步改进的技术方案，所述混合器包括架设在所述第四侧边以及最靠近所述第四侧边的那个第二分隔壁上的若干第四板片，所述第四翅片自所述第四板片延伸。As a further improved technical solution of the present invention, the mixer includes a plurality of fourth plates erected on the fourth side wall and the second partition wall closest to the fourth side, the fourth wing The sheet extends from the fourth sheet.
作为本发明进一步改进的技术方案，所述混合器包括架设在所述第四侧边以及最靠近所述第四侧边的那个第二分隔壁上的若干第五板片，所述第五翅片自所述第五板片延伸。As a further improved technical solution of the present invention, the mixer includes a plurality of fifth plates erected on the fourth side wall and the second partition wall closest to the fourth side, the fifth wing The sheet extends from the fifth sheet.
作为本发明进一步改进的技术方案，所述时针方向为顺时针方向或者逆时针方向。As a further improved technical solution of the present invention, the hour hand direction is a clockwise direction or a counterclockwise direction.
作为本发明进一步改进的技术方案，所述混合腔组件包括主体部以及与所述主体部相配合的盖板，所述主体部包括侧板以及自所述侧板延伸的侧壁，所述盖板固定在所述侧壁上，所述第一子腔体、第二子腔体以及中间子腔体由所述主体部以及所述盖板形成；所述盖板包括与所述第一子腔体连通且对应于所述第一后处理部件的第一开口以及与所述第二子腔体连通且对应于所述第 二后处理部件的第二开口，所述安装孔位于所述侧壁的顶端。As a further improved technical solution of the present invention, the mixing chamber assembly includes a main body portion and a cover plate that cooperates with the main body portion, the main body portion includes a side plate and a side wall extending from the side plate, the cover a plate is fixed on the side wall, the first sub-cavity, the second sub-cavity and the intermediate sub-cavity are formed by the main body portion and the cover plate; the cover plate includes the first sub-chamber a cavity communicating and corresponding to the first opening of the first after-treatment component and communicating with the second sub-cavity and corresponding to the first A second opening of the second processing component, the mounting aperture being located at a top end of the sidewall.
作为本发明进一步改进的技术方案，所述混合腔组件包括位于所述第一后处理部件以及所述第一子腔体之间的挡板，所述挡板设有若干穿孔。As a further improved technical solution of the present invention, the mixing chamber assembly includes a baffle between the first post-processing component and the first sub-cavity, and the baffle is provided with a plurality of perforations.
相较于现有技术，本发明通过设置上述这种结构的混合器，尿素液滴与排气在对应的镂空部以及翅片的扰流下进行混合，提高了混合的均匀性。另外，增加了气流在有限空间内的行程，确保尿素液滴与排气充分混合同时保证尿素液滴被充分加热，提高了尿素液滴蒸发率，提高氨气分子分布均匀性，降低尿素结晶的风险。Compared with the prior art, the present invention provides a mixer of the above structure, and the urea droplets and the exhaust gas are mixed under the corresponding hollow portions and the turbulence of the fins, thereby improving the uniformity of mixing. In addition, the flow of the gas flow in a limited space is increased, ensuring that the urea droplets are thoroughly mixed with the exhaust gas while ensuring that the urea droplets are sufficiently heated, thereby increasing the evaporation rate of the urea droplets, improving the uniformity of the distribution of the ammonia molecules, and reducing the crystallization of the urea. risk.
附图说明DRAWINGS
图1是本发明混合腔组件与第一后处理部件以及第二后处理部件组装在一起的立体示意图。1 is a perspective view of the mixing chamber assembly of the present invention assembled with a first aftertreatment component and a second aftertreatment component.
图2是图1的部分立体分解图，其中混合腔组件被分离出来。Figure 2 is a partial exploded perspective view of Figure 1 with the mixing chamber assembly separated.
图3是图2中混合腔组件的部分立体分解图，其中将盖板以及挡板分离出来。Figure 3 is a partial exploded perspective view of the mixing chamber assembly of Figure 2 with the cover and baffle separated.
图4是图3进一步的立体分解图，其中混合器也被分离出来。Figure 4 is a further exploded perspective view of Figure 3 with the mixer also separated.
图5是图2中混合腔组件另一角度的立体示意图。Figure 5 is a perspective view of the mixing chamber assembly of Figure 2 at another angle.
图6是图2中混合腔组件的主视图。Figure 6 is a front elevational view of the mixing chamber assembly of Figure 2.
图7是图6的侧视图。Figure 7 is a side view of Figure 6.
图8是图2中的混合腔组件去除盖板以及挡板之后的立体示意图。Figure 8 is a perspective view of the mixing chamber assembly of Figure 2 with the cover removed and the baffle removed.
图9是图8的主视图。Figure 9 is a front elevational view of Figure 8.
图10是图9另一角度的立体图，其中去除了混合器的框体。Figure 10 is a perspective view of another angle of Figure 9 with the frame of the mixer removed.
图11是图8中混合器的立体图。Figure 11 is a perspective view of the mixer of Figure 8.
图12是图11另一角度的立体图。Figure 12 is a perspective view of another angle of Figure 11.
图13是图12另一角度的立体图。Figure 13 is a perspective view of another angle of Figure 12 .
图14是图11另一角度的立体图。Figure 14 is a perspective view of another angle of Figure 11 .
图15是图14另一角度的立体图。Figure 15 is a perspective view of another angle of Figure 14.
图16是图8中混合器的立体分解图。Figure 16 is an exploded perspective view of the mixer of Figure 8.
图17是图16另一角度的立体分解图。Figure 17 is an exploded perspective view of another angle of Figure 16;
具体实施方式detailed description
请参图1至图17所示，本发明揭示了一种混合腔组件100，用于发动机排气后处理装置中以 处理发动机的排气。所述排气后处理装置可以包括位于所述混合腔组件100上游的第一后处理部件200及/或位于所述混合腔组件100下游的第二后处理部件300。其中，第一后处理部件200可以是氧化催化器(DOC)或者DOC与柴油颗粒捕集器(DPF)的组合，第二后处理部件300可以是选择性催化还原模块(SCR)。当然，在某些实施方式中，还可以用涂了SCR催化剂的DPF(SDPF)来代替DPF。排气后处理装置的形状可以为直线形、U形、Z形、L形等。另外，所属技术领域的技术人员可以理解，上述DOC、DPF、SDPF等可以根据实际需要设计为其他类型的催化器或者组合，在此不再赘述。Referring to Figures 1 to 17, the present invention discloses a mixing chamber assembly 100 for use in an engine exhaust aftertreatment device. Handle the exhaust of the engine. The exhaust aftertreatment device may include a first aftertreatment component 200 located upstream of the mixing chamber assembly 100 and/or a second aftertreatment component 300 located downstream of the mixing chamber assembly 100. Wherein, the first aftertreatment component 200 may be an oxidation catalyst (DOC) or a combination of a DOC and a diesel particulate trap (DPF), and the second aftertreatment component 300 may be a selective catalytic reduction module (SCR). Of course, in certain embodiments, DPF (SDPF) coated with an SCR catalyst can also be used in place of the DPF. The shape of the exhaust aftertreatment device may be linear, U-shaped, Z-shaped, L-shaped, or the like. In addition, those skilled in the art can understand that the above-mentioned DOC, DPF, SDPF, etc. can be designed as other types of catalysts or combinations according to actual needs, and details are not described herein again.
请参图2至图17所示，所述混合腔组件100包括腔体101以及位于所述腔体101内的混合器40。按照不同的分区，所述腔体101包括第一子腔体10、第二子腔体20以及连通所述第一子腔体10与所述第二子腔体20的中间子腔体30，其中，所述第一子腔体10相较于所述第二子腔体20位于排气流动方向的上游，所述混合器40位于所述中间子腔体30内。Referring to FIGS. 2-17, the mixing chamber assembly 100 includes a cavity 101 and a mixer 40 located within the cavity 101. According to different partitions, the cavity 101 includes a first sub-cavity 10, a second sub-cavity 20, and a middle sub-cavity 30 connecting the first sub-cavity 10 and the second sub-cavity 20. The first sub-cavity 10 is located upstream of the exhaust gas flow direction than the second sub-cavity 20, and the mixer 40 is located in the intermediate sub-cavity 30.
从结构上看，请参图5及图7所示，本发明的混合腔组件100包括主体部1以及与所述主体部1相配合的盖板2。所述主体部1包括侧板11以及自所述侧板11延伸的侧壁12。所述盖板2通过例如焊接的方式固定在所述侧壁12上。在本发明图示的实施方式中，所述第一子腔体10、第二子腔体20以及中间子腔体30由所述主体部1以及所述盖板2形成。Structurally, as shown in FIGS. 5 and 7, the mixing chamber assembly 100 of the present invention includes a body portion 1 and a cover plate 2 that mates with the body portion 1. The body portion 1 includes a side panel 11 and a side wall 12 extending from the side panel 11. The cover plate 2 is fixed to the side wall 12 by, for example, welding. In the illustrated embodiment of the invention, the first sub-cavity 10, the second sub-cavity 20, and the intermediate sub-cavity 30 are formed by the main body portion 1 and the cover plate 2.
具体地，请参图9所示，在本发明图示的实施方式中，所述侧壁12在靠近其顶部的位置设有用以安装尿素喷嘴的安装孔1213。所述安装孔1213位于所述混合腔组件100的左上方，即与混合腔组件100中心面成一定角度。Specifically, as shown in FIG. 9, in the illustrated embodiment of the present invention, the side wall 12 is provided with a mounting hole 1213 for mounting a urea nozzle at a position near the top thereof. The mounting hole 1213 is located at the upper left of the mixing chamber assembly 100, that is, at an angle to the center plane of the mixing chamber assembly 100.
请参图7所示，所述第一子腔体10与所述第二子腔体20相互偏移。在垂直于排气流动方向的厚度方向A-A上，所述混合腔组件100设有位于所述第一子腔体10与所述第二子腔体20之间的倾斜部50，以形成对应于所述混合器40的缩口51。Referring to FIG. 7, the first sub-cavity 10 and the second sub-cavity 20 are offset from each other. The mixing chamber assembly 100 is provided with an inclined portion 50 between the first sub-cavity 10 and the second sub-cavity 20 in a thickness direction AA perpendicular to the exhaust gas flow direction to form a corresponding portion The neck 51 of the mixer 40.
请参图2至图4所示，所述盖板2包括第一板片部21、第二板片部22以及连接所述第一板片部21与所述第二板片部22的倾面部23。所述倾面部23对应于所述倾斜部50。另外，所述第一板片部21设有与所述第一子腔体10连通且对应于第一后处理部件200的第一开口211，所述第二板片部22设有与所述第二子腔体20连通且对应于第二后处理部件300的第二开口221。在本发明图示的实施方式中，所述第一开口211为上游排气入口，所述第二开口221为下游排气出口。 Referring to FIG. 2 to FIG. 4 , the cover plate 2 includes a first plate portion 21 , a second plate portion 22 , and a tilt connecting the first plate portion 21 and the second plate portion 22 . Face 23. The inclined surface portion 23 corresponds to the inclined portion 50. In addition, the first plate portion 21 is provided with a first opening 211 communicating with the first sub-cavity 10 and corresponding to the first post-processing component 200, and the second plate portion 22 is provided with the The second sub-cavity 20 is in communication and corresponds to the second opening 221 of the second after-treatment component 300. In the illustrated embodiment of the invention, the first opening 211 is an upstream exhaust inlet and the second opening 221 is a downstream exhaust outlet.
请参图10至图17所示，所述混合器40设有框体7以及倾斜设置的若干翅片8，其中所述框体7内大致沿时针方向依次包括第一镂空部71、第二镂空部72、第三镂空部73、第四镂空部74、第五镂空部75以及第六镂空部76。所述翅片8设有位于所述第一镂空部71内的第一翅片81、位于所述第二镂空部72内的第二翅片82、位于所述第三镂空部73内的第三翅片83、位于所述第四镂空部74内的第四翅片84、位于所述第五镂空部75内的第五翅片85以及位于所述第六镂空部76内的第六翅片86，其中所述第一翅片81、第二翅片82、第三翅片83、第四翅片84、第五翅片85以及第六翅片86沿所述时针方向依次倾斜。请参图13所示，在本发明图示的实施方式中，所述时针方向为椭圆形上箭头所示的逆时针方向，当然在其他实施方式中也可以为顺时针方向。As shown in FIG. 10 to FIG. 17 , the mixer 40 is provided with a frame body 7 and a plurality of fins 8 disposed obliquely. The frame body 7 includes a first hollow portion 71 and a second portion in a substantially clockwise direction. The hollow portion 72, the third hollow portion 73, the fourth hollow portion 74, the fifth hollow portion 75, and the sixth hollow portion 76. The fin 8 is provided with a first fin 81 located in the first hollow portion 71, a second fin 82 located in the second hollow portion 72, and a portion located in the third hollow portion 73. a third fin 83, a fourth fin 84 located in the fourth hollow portion 74, a fifth fin 85 located in the fifth hollow portion 75, and a sixth fin located in the sixth hollow portion 76 The sheet 86, wherein the first fins 81, the second fins 82, the third fins 83, the fourth fins 84, the fifth fins 85, and the sixth fins 86 are sequentially inclined in the hour hand direction. Referring to FIG. 13, in the illustrated embodiment of the present invention, the hour hand direction is a counterclockwise direction indicated by an elliptical upper arrow, and of course, in other embodiments, it may be a clockwise direction.
通过设置这种结构混合器40，尿素液滴与排气在对应的镂空部以及翅片的扰流下进行混合，提高了混合的均匀性，降低了尿素结晶的风险。上述镂空部把尿素液滴与排气的混合物大概划分成不同的区域，从而提高了分布的均匀性。另外，通过设置沿同一方向倾斜的翅片，能够使混合物形成旋流，从而提高混合的均匀性。请结合图9及图10所示，混合物在第三翅片83以及第六翅片86的作用下，在所述第二子腔体20的内外两侧大致形成如图9及图10中箭头所示的双旋流，从而提高混合效果。By providing such a structural mixer 40, the urea droplets and the exhaust gas are mixed under the corresponding hollow portions and the turbulence of the fins, thereby improving the uniformity of mixing and reducing the risk of urea crystallization. The hollow portion divides the mixture of urea droplets and exhaust gas into approximately different regions, thereby improving the uniformity of the distribution. In addition, by providing fins inclined in the same direction, the mixture can be formed into a swirling flow, thereby improving the uniformity of mixing. Referring to FIG. 9 and FIG. 10, the mixture is substantially formed on the inner and outer sides of the second sub-cavity 20 by the third fin 83 and the sixth fin 86 as shown in FIG. 9 and FIG. The double swirl shown is shown to increase the mixing effect.
在本发明图示的实施方式中，所述第一镂空部71、第六镂空部76以及第五镂空部75排成第一行，所述第二镂空部72、第三镂空部73以及第四镂空部74排成与所述第一行平行的第二行。In the illustrated embodiment of the present invention, the first hollow portion 71, the sixth hollow portion 76, and the fifth hollow portion 75 are arranged in a first row, the second hollow portion 72, the third hollow portion 73, and the first The four hollow portions 74 are arranged in a second row parallel to the first row.
所述第一镂空部71与所述第二镂空部72排列成第一列，所述第六镂空部76与所述第三镂空部73排列成第二列，所述第五镂空部75与所述第四镂空部74排列成第三列，其中所述第二列位于所述第一列于所述第三列之间。The first hollow portion 71 and the second hollow portion 72 are arranged in a first row, and the sixth hollow portion 76 and the third hollow portion 73 are arranged in a second column, and the fifth hollow portion 75 is The fourth hollow portions 74 are arranged in a third column, wherein the second column is located between the first column and the third column.
在本发明图示的实施方式中，所述框体7大致呈梯形，其包括相互连接的第一侧边701、第二侧边702、第三侧边703以及第四侧边704，其中所述第一侧边701为短边，所述第三侧边703为长边。In the illustrated embodiment of the present invention, the frame body 7 is substantially trapezoidal, and includes a first side edge 701, a second side edge 702, a third side edge 703, and a fourth side edge 704 that are connected to each other. The first side 701 is a short side, and the third side 703 is a long side.
所述混合器40包括架设在所述第二侧边702与所述第四侧边704上的第一分隔壁811，所述第一镂空部71、第六镂空部76以及第五镂空部75位于所述第一分隔壁811的一侧，所述第二镂空部72、第三镂空部73以及第四镂空部74位于所述第一分隔壁811的另一侧。所述第一分隔壁811设有竖直的平板部8111以及自所述平板部8111的两端沿相反方向延伸的第七翅片8112以及 第八翅片8113。其中所述第七翅片8112与第一翅片81以及第二翅片82的倾斜方向相同，所述第八翅片8113与第四翅片84以及第五翅片85的倾斜方向相同。The mixer 40 includes a first partition wall 811 spanned on the second side 702 and the fourth side 704, the first hollow portion 71, the sixth hollow portion 76, and the fifth hollow portion 75. Located on one side of the first partition wall 811, the second hollow portion 72, the third hollow portion 73, and the fourth hollow portion 74 are located on the other side of the first partition wall 811. The first partition wall 811 is provided with a vertical flat plate portion 8111 and a seventh fin 8112 extending in opposite directions from both ends of the flat plate portion 8111 and Eighth fin 8113. The seventh fin 8112 has the same inclination direction as the first fin 81 and the second fin 82, and the eighth fin 8113 has the same inclination direction as the fourth fin 84 and the fifth fin 85.
所述混合器40包括架设在所述第一侧边701、第一分隔壁811以及第三侧边703上的若干第二分隔壁821，所述第二分隔壁821设有第三板片8211，所述第三翅片83自所述第三板片8211的一端(例如图16中的前端)延伸，所述第六翅片86自所述第三板片8211的另一端(例如图16中的后端)延伸，所述第三翅片83与所述第六翅片86的倾斜方向相反。The mixer 40 includes a plurality of second partition walls 821 spanned on the first side edge 701, the first partition wall 811 and the third side edge 703, and the second partition wall 821 is provided with a third plate 8211 The third fin 83 extends from one end of the third plate 8211 (for example, the front end in FIG. 16), and the sixth fin 86 is from the other end of the third plate 8211 (for example, FIG. 16 The rear end of the third fin 83 extends opposite to the oblique direction of the sixth fin 86.
所述混合器40包括架设在所述第二侧边702以及最靠近所述第二侧边702的那个第二分隔壁821上的若干第一板片810，所述第一翅片81自所述第一板片810延伸。The mixer 40 includes a plurality of first plates 810 spanned on the second side 702 and the second partition 821 closest to the second side 702, the first fins 81 The first plate 810 extends.
所述混合器40包括架设在所述第二侧边702以及最靠近所述第二侧边702的那个第二分隔壁821上的若干第二板片820，所述第二翅片82自所述第二板片820延伸。The mixer 40 includes a plurality of second plates 820 spanned on the second side 702 and the second partition 821 closest to the second side 702, the second fin 82 The second plate 820 extends.
所述混合器40包括架设在所述第四侧边704以及最靠近所述第四侧边704的那个第二分隔壁821上的若干第四板片840，所述第四翅片84自所述第四板片840延伸。The mixer 40 includes a plurality of fourth plates 840 spanned on the fourth side 704 and the second dividing wall 821 closest to the fourth side 704, the fourth fin 84 The fourth plate 840 extends.
所述混合器40包括架设在所述第四侧边704以及最靠近所述第四侧边704的那个第二分隔壁821上的若干第五板片850，所述第五翅片85自所述第五板片850延伸。The mixer 40 includes a plurality of fifth plates 850 mounted on the fourth side 704 and the second dividing wall 821 closest to the fourth side 704, the fifth fin 85 The fifth plate 850 extends.
请参图11至图17所示，所述第一板片810、第二板片820、第三板片8211、第四板片840以及第五板片850均呈横向延伸；所述平板部8111呈纵向延伸，且与所述横向相互交错。所述框体7、第三板片8211以及平板部8111的顶端均设置凹槽，用以定位对应的板片。Referring to FIG. 11 to FIG. 17, the first plate 810, the second plate 820, the third plate 8211, the fourth plate 840, and the fifth plate 850 all extend in a lateral direction; The 8111 extends longitudinally and is interdigitated with the transverse direction. Grooves are provided at the top ends of the frame body 7, the third plate piece 8211, and the flat plate portion 8111 for positioning corresponding plates.
请参图2至图6所示，所述混合腔组件100包括位于所述第一后处理部件200以及所述第一子腔体10之间的挡板6，所述挡板6设有若干穿孔61。通过设置挡板6能够降低从第一后处理部件200出来的排气直接对喷射出来的尿素产生的偏转，提高尿素液滴与排气的混合，提高了尿素液滴蒸发率，提高氨气分布均匀性，降低尿素结晶的风险。Referring to FIG. 2 to FIG. 6 , the mixing chamber assembly 100 includes a baffle 6 between the first post-processing component 200 and the first sub-cavity 10 , and the baffle 6 is provided with a plurality of baffles 6 . Perforation 61. By providing the baffle 6, the deflection of the exhaust gas from the first after-treatment component 200 directly to the injected urea can be reduced, the mixing of the urea droplets and the exhaust gas can be improved, the evaporation rate of the urea droplets can be improved, and the ammonia distribution can be improved. Uniformity reduces the risk of urea crystallization.
当然，可以理解，在其他实施方式中，还可以将混合器40的翅片设置为分为内外两层。优选地，内层的翅片的倾斜方向与外层的翅片的倾斜方向相反，例如内层的翅片沿顺时针倾斜，外层的翅片沿逆时针倾斜，反之亦然。Of course, it can be understood that in other embodiments, the fins of the mixer 40 can also be arranged to be divided into inner and outer layers. Preferably, the direction of inclination of the fins of the inner layer is opposite to the direction of inclination of the fins of the outer layer, for example, the fins of the inner layer are inclined clockwise, and the fins of the outer layer are inclined counterclockwise, and vice versa.
本文使用的例如“上”、“下”、“左”、“右”、“前”、“后”、等表示空间相对位置的术语是出于便于说明的目的来描述如附图中所示的一个特征相对于另一个特征的关系。可以理解，根据产品摆放位置的不同，空间相对位置的术语可以旨在包括除了图中所示方位以外的不同 方位，并不应当理解为对权利要求的限制。另外，本文使用的描述词“竖直”并非完全等同于沿着重力方向，允许有一定角度的倾斜。The terms "upper", "lower", "left", "right", "front", "rear", and the like, as used herein, are used to refer to the relative position of the space for the purpose of illustration. The relationship of one feature to another. It will be understood that the term relative to the spatial position may be intended to include a different orientation than that shown in the figures, depending on where the product is placed. The orientation should not be construed as limiting the claims. In addition, the descriptor "vertical" as used herein is not exactly equivalent to the direction of gravity, allowing for an angled tilt.
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 replaced by those skilled in the art without departing from the spirit and scope of the invention. It is intended to be included within the scope of the appended claims.

Claims (12)

  1. 一种混合腔组件，用于发动机排气后处理装置中，所述混合腔组件包括腔体以及用以安装尿素喷嘴的安装孔，所述腔体包括用以与第一后处理部件连通的第一子腔体、用以与第二后处理部件连通的第二子腔体以及连通所述第一子腔体与所述第二子腔体的中间子腔体，所述第一子腔体相较于所述第二子腔***于排气流动方向的上游，所述尿素喷嘴用以向所述第一子腔体内喷射尿素液滴，其特征在于：所述混合腔组件还包括位于所述中间子腔体内的混合器，所述混合器设有框体以及倾斜设置的若干翅片，其中所述框体内大致沿时针方向依次包括第一镂空部、第二镂空部、第三镂空部、第四镂空部、第五镂空部以及第六镂空部，所述混合器还设有位于所述第一镂空部内的第一翅片、位于所述第二镂空部内的第二翅片、位于所述第三镂空部内的第三翅片、位于所述第四镂空部内的第四翅片、位于所述第五镂空部内的第五翅片以及位于所述第六镂空部内的第六翅片，其中所述第一翅片、第二翅片、第三翅片、第四翅片、第五翅片以及第六翅片沿所述时针方向依次倾斜。A mixing chamber assembly for use in an engine exhaust aftertreatment device, the mixing chamber assembly including a cavity and a mounting hole for mounting a urea nozzle, the cavity including a first line for communicating with the first aftertreatment component a sub-cavity, a second sub-cavity for communicating with the second post-processing component, and a middle sub-cavity connecting the first sub-cavity and the second sub-cavity, the first sub-cavity The urea nozzle is configured to inject urea droplets into the first sub-cavity, in contrast to the second sub-cavity being located upstream of the exhaust gas flow direction, wherein the mixing chamber assembly further comprises a mixer in a middle sub-chamber, the mixer is provided with a frame body and a plurality of fins disposed obliquely, wherein the frame body includes a first hollow portion, a second hollow portion, and a third hollow portion in a substantially clockwise direction. a fourth hollow portion, a fifth hollow portion, and a sixth hollow portion, the mixer further comprising a first fin located in the first hollow portion, a second fin located in the second hollow portion, located at a third fin in the third hollow portion, a fourth fin in the fourth hollow portion, a fifth fin located in the fifth hollow portion, and a sixth fin located in the sixth hollow portion, wherein the first fin and the second fin The sheet, the third fin, the fourth fin, the fifth fin, and the sixth fin are sequentially inclined in the hour hand direction.
  2. 如权利要求1所述的混合腔组件，其特征在于：所述第一镂空部、第六镂空部以及第五镂空部排成第一行，所述第二镂空部、第三镂空部以及第四镂空部排成与所述第一行平行的第二行；The mixing chamber assembly according to claim 1, wherein said first hollow portion, said sixth hollow portion and said fifth hollow portion are arranged in a first row, said second hollow portion, said third hollow portion, and said The four hollow portions are arranged in a second row parallel to the first row;
    所述第一镂空部与所述第二镂空部排列成第一列，所述第六镂空部与所述第三镂空部排列成第二列，所述第五镂空部与所述第四镂空部排列成第三列，其中所述第二列位于所述第一列于所述第三列之间。The first hollow portion and the second hollow portion are arranged in a first row, the sixth hollow portion and the third hollow portion are arranged in a second column, the fifth hollow portion and the fourth hollow portion The portions are arranged in a third column, wherein the second column is located between the first column and the third column.
  3. 如权利要求2所述的混合腔组件，其特征在于：所述框体呈梯形，其包括相互连接的第一侧边、第二侧边、第三侧边以及第四侧边，其中所述第一侧边为短边，所述第三侧边为长边。The mixing chamber assembly of claim 2 wherein said frame is trapezoidal and includes first side, second side, third side and fourth side joined to each other, wherein said The first side is a short side and the third side is a long side.
  4. 如权利要求3所述的混合腔组件，其特征在于：所述混合器包括架设在所述第二侧边与所述第四侧边上的第一分隔壁，所述第一镂空部、第六镂空部以及第五镂空部位于所述第一分隔壁的一侧，所述第二镂空部、第三镂空部以及第四镂空部位于所述第一分隔壁的另一侧。A mixing chamber assembly according to claim 3, wherein said mixer comprises a first partition wall erected on said second side and said fourth side, said first hollow portion, said The sixth hollow portion and the fifth hollow portion are located on one side of the first partition wall, and the second hollow portion, the third hollow portion, and the fourth hollow portion are located on the other side of the first partition wall.
  5. 如权利要求4所述的混合腔组件，其特征在于：所述混合器包括架设在所述第一侧边、第一分隔壁以及第三侧边上的若干第二分隔壁，所述第二分隔壁设有第三板片，所述第三翅片自所述第三板片的一端延伸，所述第六翅片自所述第三板片的另一端延伸，所述第三翅片与所述第六 翅片的倾斜方向相反。A mixing chamber assembly according to claim 4, wherein said mixer comprises a plurality of second dividing walls mounted on said first side, said first dividing wall and said third side, said second The partition wall is provided with a third plate, the third fin extends from one end of the third plate, and the sixth fin extends from the other end of the third plate, the third fin With the sixth The fins are tilted in opposite directions.
  6. 如权利要求5所述的混合腔组件，其特征在于：所述混合器包括架设在所述第二侧边以及最靠近所述第二侧边的那个第二分隔壁上的若干第一板片，所述第一翅片自所述第一板片延伸。The mixing chamber assembly of claim 5 wherein said mixer includes a plurality of first sheets erected on said second side and the second dividing wall closest to said second side The first fin extends from the first sheet.
  7. 如权利要求6所述的混合腔组件，其特征在于：所述混合器包括架设在所述第二侧边以及最靠近所述第二侧边的那个第二分隔壁上的若干第二板片，所述第二翅片自所述第二板片延伸。A mixing chamber assembly according to claim 6 wherein said mixer includes a plurality of second plates mounted on said second side and on said second dividing wall closest to said second side The second fin extends from the second plate.
  8. 如权利要求7所述的混合腔组件，其特征在于：所述混合器包括架设在所述第四侧边以及最靠近所述第四侧边的那个第二分隔壁上的若干第四板片，所述第四翅片自所述第四板片延伸。A mixing chamber assembly according to claim 7 wherein said mixer includes a plurality of fourth plates erected on said fourth side and the second dividing wall closest to said fourth side The fourth fin extends from the fourth plate.
  9. 如权利要求8所述的混合腔组件，其特征在于：所述混合器包括架设在所述第四侧边以及最靠近所述第四侧边的那个第二分隔壁上的若干第五板片，所述第五翅片自所述第五板片延伸。A mixing chamber assembly according to claim 8 wherein said mixer includes a plurality of fifth plates erected on said fourth side and the second dividing wall closest to said fourth side The fifth fin extends from the fifth plate.
  10. 如权利要求1至9项中任意一项所述的混合腔组件，其特征在于：所述时针方向为顺时针方向或者逆时针方向。The mixing chamber assembly according to any one of claims 1 to 9, wherein the hour hand direction is a clockwise direction or a counterclockwise direction.
  11. 如权利要求10所述的混合腔组件，其特征在于：所述混合腔组件包括主体部以及与所述主体部相配合的盖板，所述主体部包括侧板以及自所述侧板延伸的侧壁，所述盖板固定在所述侧壁上，所述第一子腔体、第二子腔体以及中间子腔体由所述主体部以及所述盖板形成；所述盖板包括与所述第一子腔体连通且对应于所述第一后处理部件的第一开口以及与所述第二子腔体连通且对应于所述第二后处理部件的第二开口，所述安装孔位于所述侧壁的顶端。A mixing chamber assembly according to claim 10, wherein said mixing chamber assembly includes a body portion and a cover plate that cooperates with said body portion, said body portion including side panels and extending from said side panels a side wall, the cover plate is fixed on the side wall, the first sub-cavity, the second sub-cavity and the intermediate sub-cavity are formed by the main body portion and the cover plate; a first opening in communication with the first sub-cavity and corresponding to the first after-treatment component and a second opening in communication with the second sub-cavity and corresponding to the second after-treatment component A mounting hole is located at the top end of the side wall.
  12. 如权利要求10所述的混合腔组件，其特征在于：所述混合腔组件包括位于所述第一后处理部件以及所述第一子腔体之间的挡板，所述挡板设有若干穿孔。 The mixing chamber assembly of claim 10 wherein said mixing chamber assembly includes a baffle between said first aftertreatment component and said first subchamber, said baffle being provided with a plurality perforation.
PCT/CN2017/099080 2016-09-07 2017-08-25 Mixing chamber assembly WO2018045883A1 (en)

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