WO2017084550A1 - 喷嘴组件 - Google Patents

喷嘴组件 Download PDF

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Publication number
WO2017084550A1
WO2017084550A1 PCT/CN2016/105818 CN2016105818W WO2017084550A1 WO 2017084550 A1 WO2017084550 A1 WO 2017084550A1 CN 2016105818 W CN2016105818 W CN 2016105818W WO 2017084550 A1 WO2017084550 A1 WO 2017084550A1
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WO
WIPO (PCT)
Prior art keywords
cooling
passage
nozzle
nozzle assembly
seat
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PCT/CN2016/105818
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English (en)
French (fr)
Inventor
樊高峰
彭威波
杨振球
宋红卫
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天纳克（苏州）排放系统有限公司
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Application filed by 天纳克（苏州）排放系统有限公司 filed Critical 天纳克（苏州）排放系统有限公司
Publication of WO2017084550A1 publication Critical patent/WO2017084550A1/zh

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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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M53/00—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
    • F02M53/04—Injectors with heating, cooling, or thermally-insulating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for

Definitions

  • the invention relates to a nozzle assembly and belongs to the technical field of engine exhaust aftertreatment.
  • the nozzle mainly comprises a urea nozzle and a fuel nozzle, wherein the urea nozzle is used for injecting an atomized urea solution into the exhaust gas, and the urea is converted into NH3 and reacted with NOx to be converted into N2 to reduce nitrogen oxides. Emissions; fuel nozzles are used to inject fuel compounds, and the high temperatures generated by their combustion can promote DPF regeneration.
  • a nozzle assembly including a nozzle and a cooling jacket surrounding the periphery of the nozzle, the cooling jacket including a cooling seat and an end cover at a lower end of the cooling seat,
  • the cooling seat is provided with a body portion, the body portion is provided with a mounting surface, a convex portion extending downward beyond the mounting surface, a first passage located beside the convex portion, and a side of the convex portion a second channel on the side, the first channel being spaced apart from the second channel, wherein the first channel is for communicating with a liquid inlet tube; the end cap is sealed at a periphery of the convex portion to form cooling a cavity that communicates the first passage with the second passage; the cooling seat further includes an outlet cavity in communication with the second passage for communicating with the outlet tube.
  • the cooling cavity has a ring shape, and the liquid discharge cavity is also annular and located above the second channel.
  • the first passage is located at one side of the convex portion, and the second passage is located at the other side of the convex portion to oppose the first passage.
  • the cooling seat is a machined piece, and the end cover is separately manufactured from the cooling seat and fixed together by welding.
  • the end cap is in the shape of a bowl, and includes a bottom end surface at the bottom and a surrounding side, and the cooling cavity is formed between the convex portion and the end cover.
  • the bottom end surface is provided with an opening, the convex The openings correspond to the openings and seal their joints by welding, the nozzles being exposed to the openings.
  • the cooling seat includes a side surface surrounding the periphery of the convex portion; the end cover has a flat shape, and includes a bottom end surface at the bottom, and the bottom end surface is provided with an opening.
  • the raised portions correspond to the openings and seal their joints by welding, the nozzles being exposed to the openings.
  • the first passage penetrates the mounting surface downward
  • the second passage also penetrates the mounting surface downward
  • the end cover covers the first passage and the first The periphery of the second channel.
  • the convex portion further includes a plurality of annular ribs at a periphery thereof and extending into the cooling cavity.
  • the cooling jacket further includes a cylindrical portion extending upward from the body portion, the body portion further comprising a positioning cylinder extending upward into the cylindrical portion; the cooling jacket further Included is a sealing disk that cooperates with the positioning cylinder, the sealing disk is provided with a through hole, the positioning cylinder is at least partially inserted into the through hole and seals their joint by welding, the sealing disk is welded
  • the inner side of the cylindrical portion; the inner side of the cylindrical portion, the outer side of the positioning cylinder, the upper portion of the main body portion, and the lower portion of the sealing disk collectively form the liquid discharge chamber.
  • the positioning cylinder is provided with a first receiving cavity
  • the protruding portion is provided with a second receiving cavity communicating with the first receiving cavity
  • the diameter of the first receiving cavity is larger than
  • the second receiving cavity has a diameter to form a step to position the nozzle.
  • the second channel includes a first through hole penetrating the mounting surface downward and a second through hole penetrating the body portion upward, the first through hole and the first through hole
  • the two through holes are displaced from each other in the vertical direction but are connected to each other.
  • the cooling jacket includes a cover body connected to an upper end of the cooling seat and configured to position the nozzle, and the cover body is welded on the cooling seat or detachably connected to the cover body Said cooling seat.
  • the cover body is detachably coupled to the cooling seat by bolts.
  • the nozzle is a urea nozzle or a fuel nozzle.
  • the body portion is provided with a mounting flange, and the mounting surface is a bottom surface of the mounting flange; the mounting flange is integrally machined with the body portion, or The mounting flange is partially formed with the body and fixed together by welding.
  • the present invention forms a cooling cavity by providing an end cover fixed at the lower end of the cooling seat, and connects the first passage and the second passage through the cooling cavity, thereby flowing the coolant.
  • the direction is clear, and good heat exchange can be achieved, and the cooling effect is better.
  • Figure 1 is a perspective view of a nozzle assembly of the present invention.
  • Figure 2 is a perspective view of another angle of Figure 1.
  • Figure 3 is an exploded perspective view of the nozzle assembly of the present invention.
  • Figure 4 is an exploded perspective view of another angle of Figure 3.
  • Figure 5 is a partial perspective assembled view of Figure 3.
  • Figure 6 is a partial cross-sectional view of Figure 3.
  • Figure 7 is a cross-sectional view taken along line A-A of Figure 1.
  • Figure 8 is a cross-sectional view taken along line B-B of Figure 7.
  • Figure 9 is a schematic cross-sectional view taken along line C-C of Figure 7.
  • Figure 10 is a schematic cross-sectional view taken along line A-A of Figure 1, and showing the flow direction of the coolant.
  • the present invention discloses a nozzle assembly 100 that includes a nozzle 1 and a cooling jacket 2 that surrounds the periphery of the nozzle 1.
  • the nozzle 1 can be a urea nozzle or a fuel nozzle.
  • the nozzle 1 includes a magnetic coil, a movable spool, a valve seat that mates with the spool, and the like.
  • the valve seat is provided with an injection hole 11. Since the structure of the nozzle 1 can be known to those skilled in the art, for example, reference can be made to the Chinese invention patent of the publication number CN 102108891B, which is not described herein again.
  • the cooling jacket 2 includes a cooling seat 3, an end cover 4 at a lower end of the cooling seat 3, a sealing disk 5 fixed in the cooling seat 3, and a cover 6 connected to an upper end of the cooling seat 3.
  • the cooling seat 3 includes a body portion 31 , a cylindrical portion 32 extending upward from the body portion 31 , a liquid inlet pipe 33 connected to the body portion 31 , and a liquid discharge. Tube 34.
  • the inlet pipe 33 and the outlet pipe 34 communicate with the cooling liquid phase of the engine, and the present invention cools the nozzle 1 by circulating a coolant of the engine.
  • the body portion 31 is provided with a mounting surface 311, a convex portion 312 extending downward beyond the mounting surface 311, a first passage 313 located at one side of the convex portion 312 and communicating with the liquid inlet tube 33. a second passage 314 on the other side of the raised portion 312 and a positioning barrel 315 extending upward into the cylindrical portion 32.
  • the body portion 31 is provided with a mounting flange 316 at the bottom, which is the bottom surface of the mounting flange 316.
  • the cooling seat 3 is a machined part for ease of manufacture.
  • the mounting flange 316 and the cooling base 3 are integrally machined.
  • the mounting flange 316 and the cooling seat 3 may also be different components and then soldered together.
  • the raised portion 312 includes a plurality of annular ribs 3121 at the periphery thereof to increase the contact area with the cooling liquid and improve the nozzle cooling effect.
  • the first channel 313 is spaced apart from the second channel 314, wherein the first channel 313 extends downward through the mounting surface 311, and the second channel 314 also extends downward through the mounting surface 311.
  • the second passage 314 includes a first through hole 3141 extending downward through the mounting surface 311 and a second through hole 3142 extending upward through the body portion 31.
  • the first through hole 3141 and the second through hole 3142 are mutually displaced in the vertical direction, but are in communication with each other. In this way, the first through hole 3141 and the second through hole 3142 can be simultaneously fabricated from the upper and lower directions, and the processing is convenient.
  • the positioning cylinder 315 is provided with a first receiving cavity 3151, and the protruding portion 312 is provided with a second receiving cavity 3121 communicating with the first receiving cavity 3151.
  • the diameter of the first receiving cavity 3151 is larger than the first
  • the diameter of the two receiving chambers 3121 is shaped It is stepped to position the nozzle 1.
  • the end cap 4 is fabricated separately from the cooling seat 3 and secured together by welding.
  • the end cap 4 is substantially bowl-shaped and includes a bottom end surface 41 at the bottom and a surrounding side surface 42.
  • the bottom end surface 41 is provided with an opening 411 to which the nozzle 1 is exposed.
  • the raised portions 312 correspond to the openings 411 and seal their joints by soldering.
  • the end cap 4 is sealed at a periphery of the boss portion 312 to form a cooling cavity 317 between the end cap 4 and the boss portion 312, and the cooling cavity 317 sets the first passage 313 Communication with the second channel 314 is achieved.
  • the end cover 4 covers the periphery of the first passage 313 and the second passage 314, and seals the first passage 313 and the second passage 314 therein.
  • a plurality of annular ribs 3121 of the convex portion 312 extend into the cooling cavity 317 to increase the contact area with the cooling liquid and improve the nozzle cooling effect.
  • alternative embodiments include at least the side surface 42 shown in FIGS. 6 and 7 being integrally machined with the body portion 31.
  • the end cap 4 has a flat shape and includes only the bottom end surface 41. This embodiment can also achieve the object of the present invention.
  • the sealing disk 5 is provided with through holes 51 which are at least partially inserted into the through holes 51 and seal their joints by welding. At the same time, the sealing disk 5 is welded to the inner side of the cylindrical portion 32. An inner side of the cylindrical portion 32, an outer side of the positioning cylinder 315, an upper portion of the main body portion 31, and a lower portion of the sealing disk 5 collectively form an outlet chamber 318.
  • the second through hole 3142 of the second passage 314 is in communication with the liquid discharge chamber 318, and the liquid outlet tube 34 is also in communication with the liquid discharge chamber 318.
  • the cylindrical portion 32 is provided with a plurality of through holes 321 so as to dissipate heat from the coil of the nozzle 1 by air.
  • the cover 6 is welded to the cooling base 3 or the cover 6 is detachably connected to the cooling base 3. In the illustrated embodiment of the invention, the cover 6 is detachably connected to the cooling base 3 by bolts 7. This arrangement facilitates disassembly and maintenance of the nozzle assembly 100 of the present invention.
  • the coolant of the engine enters the first passage 313 from the inlet pipe 33; secondly, enters the cooling cavity 317 again, at this time
  • the high temperature at the bottom of the nozzle 1 exchanges heat with the coolant to cool the nozzle 1; then, the coolant enters the outlet chamber 318 along the second passage 314; finally, the coolant flows out of the outlet
  • the tube 34 is newly returned to the engine cooling system.
  • the bottom of the nozzle 1 is the location where cooling is most needed because it is in direct contact with the high temperature exhaust.
  • the flow direction of the cooling liquid is relatively clear, so that good heat exchange can be achieved, and the cooling effect is good.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

一种喷嘴组件（100），其包括喷嘴（1）以及包覆在所述喷嘴（1）外围的冷却套（2），所述冷却套（2）包括冷却座（3）以及位于所述冷却座（3）下端的端盖（4），所述冷却座（3）设有本体部（31），所述本体部（31）设有安装面（311）、向下延伸超出所述安装面（311）的凸起部（312）、位于所述凸起部（312）旁侧的第一通道（313）以及位于所述凸起部（312）旁侧的第二通道（314），其中所述第一通道（313）用以与进液管（33）连通；所述端盖（4）密封在所述凸起部（312）的外围以形成冷却腔体（317），所述冷却腔体（317）将所述第一通道（313）与所述第二通道（314）实现连通；所述冷却座（3）还包括与所述第二通道（314）连通且用以与出液管（34）连通的出液腔体（318）。如此设置，使冷却液的流动方向比较明确，能够实现良好的热交换，冷却效果较好。

Description

喷嘴组件
本申请要求了申请日为2015年11月18日、申请号为201520921129.6、发明名称为“喷嘴组件”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。
技术领域
本发明涉及一种喷嘴组件，属于发动机排气后处理技术领域。
背景技术
内燃机尤其是柴油机排气中，含有大量的氮氧化物和颗粒物，对大气造成严重污染，危害人类的身体健康。降低氮氧化物和颗粒物的排放，已刻不容缓，各国都有具体的环保法规来对此进行规范。随着人类对大气保护意识的增强，国内外颁布的相关法律法规逐渐严格，对此，需要采用尾气后处理技术来净化处理内燃机尾气。
在发动机排气后处理技术领域，喷嘴主要包括尿素喷嘴以及燃料喷嘴，其中尿素喷嘴用于向排气中喷射雾化的尿素溶液，尿素转化为NH3与NOx反应后转化为N2，降低氮氧化物排放；燃料喷嘴用以喷射燃料化合物，其燃烧产生的高温能够促使DPF再生。
然而，由于喷嘴往往处于高温的使用环境下，因此，对于喷嘴的冷却装置的研究成为技术人员需要解决的技术问题。
发明内容
本发明的目的在于提供一种冷却效果较好的喷嘴组件。
为实现上述目的，本发明采用如下技术方案：一种喷嘴组件，其包括喷嘴以及围绕在所述喷嘴外围的冷却套，所述冷却套包括冷却座以及位于所述冷却座下端的端盖，所述冷却座设有本体部，所述本体部设有安装面、向下延伸超出所述安装面的凸起部、位于所述凸起部旁侧的第一通道以及位于所述凸起部旁侧的第二通道，所述第一通道与所述第二通道间隔设置，其中所述第一通道用以与进液管连通；所述端盖密封在所述凸起部的外围以形成冷却腔体，所述冷却腔体将所述第一通道与所述第二通道实现连通；所述冷却座还包括与所述第二通道连通且用以与出液管连通的出液腔体。
作为本发明进一步改进的技术方案，所述冷却腔体呈环形，所述出液腔体也呈环形且位于所述第二通道的上方。
作为本发明进一步改进的技术方案，所述第一通道位于所述凸起部的一侧，所述第二通道位于所述凸起部的另一侧以与所述第一通道相对。
作为本发明进一步改进的技术方案，所述冷却座是机加工件，所述端盖与所述冷却座分开制作，并通过焊接的方式固定在一起。
作为本发明进一步改进的技术方案，所述端盖呈碗状，其包括位于底部的底端面以及环绕的侧面，所述冷却腔体形成在所述凸起部与所述端盖之间，所述底端面设有开口，所述凸 起部对应于所述开口并通过焊接对它们的连接处进行密封，所述喷嘴暴露于所述开口。
作为本发明进一步改进的技术方案，所述冷却座包括环绕在所述凸起部外围的侧面；所述端盖呈平板状，其包括位于底部的底端面，所述底端面设有开口，所述凸起部对应于所述开口并通过焊接对它们的连接处进行密封，所述喷嘴暴露于所述开口。
作为本发明进一步改进的技术方案，所述第一通道向下贯穿所述安装面，所述第二通道也向下贯穿所述安装面，所述端盖覆盖所述第一通道以及所述第二通道的外围。
作为本发明进一步改进的技术方案，所述凸起部还包括位于其外围且延伸入所述冷却腔体内的若干环状凸条。
作为本发明进一步改进的技术方案，所述冷却套还包括自所述本体部向上延伸的筒状部，所述本体部还包括向上延伸入所述筒状部内的定位筒；所述冷却套还包括与所述定位筒相配合的密封盘，所述密封盘设有通孔，所述定位筒至少部分插入所述通孔内并通过焊接对它们的连接处进行密封，所述密封盘焊接在所述筒状部的内侧；所述筒状部的内侧、所述定位筒的外侧、所述本体部的上方以及所述密封盘的下方共同形成了所述出液腔体。
作为本发明进一步改进的技术方案，所述定位筒设有第一收容腔，所述凸起部设有与所述第一收容腔连通的第二收容腔，所述第一收容腔的直径大于所述第二收容腔的直径以形成阶梯状以定位所述喷嘴。
作为本发明进一步改进的技术方案，所述第二通道包括向下贯穿所述安装面的第一通孔以及向上贯穿所述本体部的第二通孔，所述第一通孔与所述第二通孔在竖直方向上相互错位，但是相互连通。
作为本发明进一步改进的技术方案，所述冷却套包括连接于所述冷却座上端且用以定位所述喷嘴的盖体，所述盖体焊接在所述冷却座上或者可拆卸地连接于所述冷却座。
作为本发明进一步改进的技术方案，所述盖体通过螺栓可拆卸地连接于所述冷却座。
作为本发明进一步改进的技术方案，所述喷嘴为尿素喷嘴或者燃料喷嘴。
作为本发明进一步改进的技术方案，所述本体部设有安装法兰，所述安装面即为所述安装法兰的底面；所述安装法兰与所述本体部一体机加工而成，或者所述安装法兰与所述本体部分开制作并通过焊接的方式固定在一起。
相较于现有技术，本发明通过设置固定在所述冷却座下端的端盖，形成了冷却腔体，并通过冷却腔体将第一通道与第二通道连通起来，从而使冷却液的流动方向比较明确，能够实现良好的热交换，冷却效果较好。
附图说明
图1是本发明喷嘴组件的立体示意图。
图2是图1另一角度的立体示意图。
图3是本发明喷嘴组件的立体分解图。
图4是图3另一角度的立体分解图。
图5是图3的部分立体组装图。
图6是图3的部分剖面示意图。
图7是沿图1中A-A线的剖面示意图。
图8是沿图7中B-B线的剖面示意图。
图9是沿图7中C-C线的剖面示意图。
图10是沿图1中A-A线的剖面示意图，且标明了冷却液的流动方向。
具体实施方式
请参图1至图9所示，本发明揭示了一种喷嘴组件100，其包括喷嘴1以及围绕在所述喷嘴1外围的冷却套2。所述喷嘴1可以为尿素喷嘴或者燃料喷嘴。所述喷嘴1包括磁性线圈、能够移动的阀芯、与所述阀芯相配合的阀座等。所述阀座上设有喷射孔11。由于所述喷嘴1的结构能够被所述技术领域的技术人员知晓，例如可参考公告号为CN 102108891B的中国发明专利，在此不再赘述。
所述冷却套2包括冷却座3、位于所述冷却座3下端的端盖4、固定于所述冷却座3内的密封盘5以及连接于所述冷却座3上端的盖体6。
请参图3至图7所示，所述冷却座3包括本体部31、自所述本体部31向上延伸的筒状部32、连接于所述本体部31上的进液管33与出液管34。在本发明图示的实施方式中，所述进液管33与所述出液管34与发动机的冷却液相通，本发明通过循环发动机的冷却液对所述喷嘴1进行冷却。
所述本体部31设有安装面311、向下延伸超出所述安装面311的凸起部312、位于所述凸起部312的一侧且用以与进液管33连通的第一通道313、位于所述凸起部312的另一侧的第二通道314、以及向上延伸入所述筒状部32内的定位筒315。
所述本体部31设有位于底部的安装法兰316，所述安装面311即为所述安装法兰316的底面。在本发明图示的实施方式中，所述冷却座3是机加工件以便于制造。在本发明图示的实施方式中，所述安装法兰316与所述冷却座3是一体机加工而成的。当然，在其他实施方式中，所述安装法兰316与所述冷却座3也可以是不同的元件，然后焊接固定在一起。
所述凸起部312包括位于其外围的若干环状凸条3121，以增加与冷却液的接触面积，提高喷嘴冷却效果。所述第一通道313与所述第二通道314间隔设置，其中所述第一通道313向下贯穿所述安装面311，所述第二通道314也向下贯穿所述安装面311，如此设置，便于机加工。具体地，在本发明图示的实施方式中，所述第二通道314包括向下贯穿所述安装面311的第一通孔3141以及向上贯穿所述本体部31的第二通孔3142，所述第一通孔3141与所述第二通孔3142在竖直方向上相互错位，但是相互连通。如此设置，可以从上、下两个方向同时制作所述第一通孔3141与所述第二通孔3142，加工方便。
所述定位筒315设有第一收容腔3151，所述凸起部312设有与所述第一收容腔3151连通的第二收容腔3121，所述第一收容腔3151的直径大于所述第二收容腔3121的直径以形 成阶梯状以定位所述喷嘴1。
在本发明图示的实施方式中，所述端盖4与所述冷却座3分开制作，并通过焊接的方式固定在一起。请参图6及图7所示，所述端盖4大致呈碗状，其包括位于底部的底端面41以及环绕的侧面42。所述底端面41设有开口411，所述喷嘴1暴露于所述开口411。请参图7所示，所述凸起部312对应于所述开口411，并通过焊接对它们的连接处进行密封。所述端盖4密封在所述凸起部312的外围以在所述端盖4与所述凸起部312之间形成冷却腔体317，所述冷却腔体317将所述第一通道313与所述第二通道314实现连通。所述端盖4覆盖所述第一通道313以及所述第二通道314的外围，将所述第一通道313以及所述第二通道314密封在其内部。请参图7所示，所述凸起部312的若干环状凸条3121延伸入所述冷却腔体317内，以增加与冷却液的接触面积，提高喷嘴冷却效果。
当然，可以理解，可选择的实施方式至少还包括将图6及图7中所示的侧面42设置为与所述本体部31一体机加工而成。此时，所述端盖4为平板状，只包括所述底端面41。这种实施方式，同样能够实现本发明的目的。
请参图6及图7所示，所述密封盘5设有通孔51，所述定位筒315至少部分插入所述通孔51内，并通过焊接对它们的连接处进行密封。同时，所述密封盘5焊接在所述筒状部32的内侧。所述筒状部32的内侧、所述定位筒315的外侧、所述本体部31的上方以及所述密封盘5的下方共同形成了一个出液腔体318。所述第二通道314的第二通孔3142与所述出液腔体318连通，所述出液管34与所述出液腔体318亦连通。
所述筒状部32设有若干贯穿的散热孔321，以利用空气对所述喷嘴1的线圈进行散热。
所述盖体6焊接在所述冷却座3上，或者所述盖体6可拆卸地连接于所述冷却座3。在本发明图示的实施方式中，所述盖体6通过螺栓7可拆卸地连接于所述冷却座3。如此设置，便于拆卸和维修本发明的喷嘴组件100。
请参图10所示，工作时，首先，发动机的冷却液从所述进液管33进入到所述第一通道313中；其次，再进入到所述冷却腔体317内，此时所述喷嘴1的底部的高温与冷却液进行热交换，以冷却所述喷嘴1；然后，冷却液沿着所述第二通道314进入所述出液腔体318；最后，冷却液流出所述出液管34从新回到发动机冷却系统中。
喷嘴1的底部是最需要冷却的位置，因为该处直接与高温的排气接触。本发明的喷嘴组件100中，冷却液的流动方向比较明确，从而能够实现良好的热交换，冷却效果较好。
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。

Claims (15)

  1. 一种喷嘴组件，其包括喷嘴以及围绕在所述喷嘴外围的冷却套，其特征在于：所述冷却套包括冷却座以及位于所述冷却座下端的端盖，所述冷却座设有本体部，所述本体部设有安装面、向下延伸超出所述安装面的凸起部、位于所述凸起部旁侧的第一通道以及位于所述凸起部旁侧的第二通道，所述第一通道与所述第二通道间隔设置，其中所述第一通道用以与进液管连通；所述端盖密封在所述凸起部的外围以形成冷却腔体，所述冷却腔体将所述第一通道与所述第二通道实现连通；所述冷却座还包括与所述第二通道连通且用以与出液管连通的出液腔体。
  2. 如权利要求1所述的喷嘴组件，其特征在于：所述冷却腔体呈环形，所述出液腔体也呈环形且位于所述第二通道的上方。
  3. 如权利要求1所述的喷嘴组件，其特征在于：所述第一通道位于所述凸起部的一侧，所述第二通道位于所述凸起部的另一侧以与所述第一通道相对。
  4. 如权利要求1所述的喷嘴组件，其特征在于：所述冷却座是机加工件，所述端盖与所述冷却座分开制作，并通过焊接的方式固定在一起。
  5. 如权利要求4所述的喷嘴组件，其特征在于：所述端盖呈碗状，其包括位于底部的底端面以及环绕的侧面，所述冷却腔体形成在所述凸起部与所述端盖之间，所述底端面设有开口，所述凸起部对应于所述开口并通过焊接对它们的连接处进行密封，所述喷嘴暴露于所述开口。
  6. 如权利要求4所述的喷嘴组件，其特征在于：所述冷却座包括环绕在所述凸起部外围的侧面；所述端盖呈平板状，其包括位于底部的底端面，所述底端面设有开口，所述凸起部对应于所述开口并通过焊接对它们的连接处进行密封，所述喷嘴暴露于所述开口。
  7. 如权利要求5所述的喷嘴组件，其特征在于：所述第一通道向下贯穿所述安装面，所述第二通道也向下贯穿所述安装面，所述端盖覆盖所述第一通道以及所述第二通道的外围。
  8. 如权利要求5所述的喷嘴组件，其特征在于：所述凸起部还包括位于其外围且延伸入所述冷却腔体内的若干环状凸条。
  9. 如权利要求1所述的喷嘴组件，其特征在于：所述冷却套还包括自所述本体部向上延伸的筒状部，所述本体部还包括向上延伸入所述筒状部内的定位筒；所述冷却套还包括与所述定位筒相配合的密封盘，所述密封盘设有通孔，所述定位筒至少部分插入所述通孔内并通过焊接对它们的连接处进行密封，所述密封盘焊接在所述筒状部的内侧；所述筒状部的内侧、所述定位筒的外侧、所述本体部的上方以及所述密封盘的下方共同形成了所述出液腔体。
  10. 如权利要求9所述的喷嘴组件，其特征在于：所述定位筒设有第一收容腔，所述凸起部设有与所述第一收容腔连通的第二收容腔，所述第一收容腔的直径大于所述第二收容腔的直径以形成阶梯状以定位所述喷嘴。
  11. 如权利要求1所述的喷嘴组件，其特征在于：所述第二通道包括向下贯穿所述安装面的第一通孔以及向上贯穿所述本体部的第二通孔，所述第一通孔与所述第二通孔在竖直方向上相互错位，但是相互连通。
  12. 如权利要求1所述的喷嘴组件，其特征在于：所述冷却套包括连接于所述冷却座上端且用以定位所述喷嘴的盖体，所述盖体焊接在所述冷却座上或者可拆卸地连接于所述冷却座。
  13. 如权利要求12所述的喷嘴组件，其特征在于：所述盖体通过螺栓可拆卸地连接于所述冷却座。
  14. 如权利要求1所述的喷嘴组件，其特征在于：所述喷嘴为尿素喷嘴或者燃料喷嘴。
  15. 如权利要求1所述的喷嘴组件，其特征在于：所述本体部设有安装法兰，所述安装面即为所述安装法兰的底面；所述安装法兰与所述本体部一体机加工而成，或者所述安装法兰与所述本体部分开制作并通过焊接的方式固定在一起。
PCT/CN2016/105818 2015-11-18 2016-11-15 喷嘴组件 WO2017084550A1 (zh)

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