WO2019011038A1 - 喷嘴 - Google Patents

喷嘴 Download PDF

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Publication number
WO2019011038A1
WO2019011038A1 PCT/CN2018/084391 CN2018084391W WO2019011038A1 WO 2019011038 A1 WO2019011038 A1 WO 2019011038A1 CN 2018084391 W CN2018084391 W CN 2018084391W WO 2019011038 A1 WO2019011038 A1 WO 2019011038A1
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WO
WIPO (PCT)
Prior art keywords
nozzle
housing
housing portion
nozzle according
inlet plug
Prior art date
Application number
PCT/CN2018/084391
Other languages
English (en)
French (fr)
Inventor
杨振球
陈川
彭威波
宋红卫
Original Assignee
天纳克（苏州）排放系统有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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 WO2019011038A1 publication Critical patent/WO2019011038A1/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
    • F01N3/18—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 methods of operation; Control
    • F01N3/20—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 methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2066—Selective catalytic reduction [SCR]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • 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
    • F01N3/18—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 methods of operation; Control
    • F01N3/20—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 methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • 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
    • F01N2510/00—Surface coverings
    • F01N2510/02—Surface coverings for thermal insulation
    • 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
    • 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
    • F01N2610/11—Adding substances to exhaust gases the substance or part of the dosing system being cooled
    • 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
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus

Definitions

  • the invention relates to a nozzle, belonging to the technical field of engine exhaust aftertreatment.
  • the urea nozzle is mainly used for injecting atomized urea droplets into the exhaust gas, and the urea is converted into NH 3 and reacted with NOx to be converted into N 2 to reduce nitrogen oxide emissions.
  • the nozzle is often in a high-temperature use environment, on the one hand, the nozzle is easily burned by the high-temperature exhaust gas; on the other hand, the precipitated urea easily forms urea crystals, thereby clogging the nozzle. Therefore, research on the cooling device of the nozzle and the injection accuracy of the nozzle has become a technical problem that the technician needs to solve.
  • a nozzle including an inlet plug, a nozzle assembly mated with the inlet plug, and a water cooling jacket fixed to the outside of the nozzle assembly, wherein the total nozzle Forming a housing portion, a magnetic portion located in the housing portion, a nozzle coil at least partially located at a periphery of the magnetic portion, a valve needle portion located below the magnetic portion, and acting on the magnetic portion and the valve needle a spring between the portions, the magnetic portion being provided with a first channel in communication with the inlet plug, the valve needle portion including a base, a valve stem extending downward from the base portion, and an end of the valve stem a valve member, the valve needle portion being provided with a second channel in communication with the first channel, wherein one end of the spring is at least partially positioned in the first channel, and the other end of the spring is at least Partially positioned in the second channel; a first space is formed between the valve needle portion and the housing portion, and the
  • a filter net is disposed in the inlet plug.
  • the nozzle includes an expansion element at least partially located in the inlet plug and/or the housing portion, and the expansion element is provided to communicate the inlet plug and the first slot The perforation of the road.
  • the housing portion includes a first housing portion and a second housing portion, wherein the sleeve portion is inserted into the first housing and the second housing.
  • the inlet plug is provided with an enlarged portion at the bottom, the enlarged portion is provided with a first receiving cavity; and the sleeve portion is provided with an upward passing through the first housing portion. a raised portion having a second receiving cavity; the expansion member having a trapezoidal cross section including a top portion received in the first receiving cavity and at least partially inserted into the second receiving cavity The body part inside.
  • the nozzle assembly includes a first sealing ring that is sleeved around a periphery of the convex portion, and the convex portion is received in the first receiving body together with the first sealing ring In the cavity, the first sealing ring is radially sandwiched between the enlarged portion and the raised portion.
  • the nozzle assembly includes a limiting member that faces the first sealing ring toward the upper limit.
  • the magnetic portion is held in the sleeve portion by an interference fit, and the nozzle is further provided with a retaining ring for positioning the magnetic portion.
  • the second housing portion is provided with a receiving cavity for accommodating the nozzle coil, and the sleeve portion passes through the nozzle coil.
  • the third housing portion is provided with a sleeve that is sleeved on the sleeve portion and radially sandwiched between the sleeve portion and the second housing portion. Two sealing rings.
  • the second housing portion is welded to the third housing portion.
  • the base of the valve needle portion is located in the sleeve portion, and the valve stem extends downward beyond the second housing portion and further extends into the third housing portion. in.
  • the sealing member is a sealing ball.
  • the bottom end portion of the third housing portion is provided with a recess for receiving the valve seat and the swirling sheet.
  • the water cooling jacket is formed by stamping a metal sheet body, and the water cooling jacket is provided with a first cylindrical portion welded on the casing portion, and located in the first cylindrical shape. a second cylindrical portion below the portion and a step portion connecting the first cylindrical portion and the second cylindrical portion, wherein the diameter of the first cylindrical portion is larger than the diameter of the second cylindrical portion.
  • the nozzle further includes a mounting seat that is pressed against the step portion, and the mounting seat is provided with a fitting hole through which the second cylindrical portion passes.
  • the nozzle further includes a heat shield fixed to a periphery of the first cylindrical portion, and the heat shield is provided with a slope on a side of the inlet plug and the outlet plug board.
  • the mounting seat is provided with a plurality of extending mounting claws, and each mounting claw is provided with a mounting hole for the screw to pass through.
  • the heat shield is provided with a positioning hole
  • the mounting seat is provided with a positioning protrusion positioned in the positioning hole
  • the nozzle includes a casing sleeved on the inlet plug and fixed to the casing portion, the casing is provided with a notch; A connector to which the nozzle coils are connected, the connector passing through the gap.
  • the present invention accommodates the magnetic portion, the spring, and at least a portion of the valve needle portion in the sleeve portion, and extends the sleeve portion upward beyond the nozzle
  • the coil prevents the urea solution from penetrating into the nozzle coil, improving the reliability of the nozzle.
  • Figure 1 is a perspective view of a nozzle of the present invention.
  • Figure 2 is a perspective view of another angle of Figure 1.
  • Figure 3 is a plan view of Figure 1.
  • Fig. 4 is a front view of Fig. 1;
  • Fig. 5 is a bottom view of Fig. 1;
  • Figure 6 is a partial exploded perspective view of Figure 1 with the mount separated.
  • Figure 7 is a partial exploded perspective view of Figure 6 with the mount and the heat shield separated.
  • Figure 8 is an exploded perspective view showing the mounting block and the heat shield of Figure 7 with the inlet plug and the outlet plug separated.
  • Figure 9 is an exploded perspective view showing the inlet plug and the outlet plug of Figure 8 removed, wherein the water jacket is separated.
  • Fig. 10 is an exploded perspective view showing the water cooling jacket of Fig. 9 removed.
  • Figure 11 is a partially exploded perspective view of the nozzle assembly of Figure 10.
  • Fig. 12 is an exploded perspective view showing the third casing portion of Fig. 11 removed.
  • Figure 13 is an exploded perspective view of the third housing portion of Figure 11;
  • Figure 14 is a cross-sectional view taken along line A-A of Figure 3 .
  • Figure 15 is a cross-sectional view taken along line B-B of Figure 3 .
  • Figure 16 is a perspective view of a nozzle of the present invention in another embodiment.
  • Figure 17 is a partially exploded perspective view of Figure 14.
  • the present invention discloses a nozzle 100 for installation in an engine aftertreatment system to inject atomized urea droplets into the exhaust.
  • the nozzle 100 includes an inlet plug 1 , a nozzle assembly 2 mated with the inlet plug 1 , a water cooling jacket 3 fixed to the outside of the nozzle assembly 2 , and a casing 4 sleeved on the inlet plug 1 .
  • the mount 5 and the heat shield 6 for mounting the nozzle 100.
  • the inlet plug 1 is used to connect a urea pipe, which comprises a filter screen 11 for filtering the urea solution and an enlarged portion 12 at the bottom, and the enlarged portion 12 is provided with a first receiving cavity 121 (refer to FIG. 15 Show).
  • the nozzle assembly 2 includes a housing portion 21, a magnetic portion 22 located in the housing portion 21, and a nozzle coil 23 at least partially located at a periphery of the magnetic portion 22.
  • the valve needle portion 24 can move upward against the spring 25.
  • the housing portion 21 includes a first housing portion 7, a second housing portion 8, and a third housing portion 9.
  • the first housing portion 7 is at least partially inserted into the first receiving cavity 121.
  • the second housing portion 8 is provided with a housing chamber 81 for accommodating the nozzle coil 23 and a step portion 82 for soldering to the water jacket 3.
  • the third housing portion 9 includes a bottom end portion 91 and a sleeve portion 92 that protrudes upwardly from the bottom end portion 91, wherein the sleeve portion 92 is inserted into the first housing 7 and the second housing In body 8.
  • the magnetic portion 22, the spring 25, and at least a portion of the valve needle portion 24 are housed in the sleeve portion 92.
  • the sleeve portion 92 passes through the nozzle coil 23. Referring to FIG. 14, the arrangement is such that the urea solution can be prevented from penetrating into the nozzle coil 23 through the slit, thereby improving the reliability of the product.
  • the valve needle portion 24 is first fitted into the sleeve portion 92, and then the magnetic portion 22 is press-fitted into the sleeve portion 92 in an interference fit manner.
  • the gap between the needle portion 24 and the magnetic portion 22 can be accurately adjusted. This gap is used to move the valve needle portion 24 to open the nozzle 100.
  • the spring 25 is again loaded and restrained by the retaining ring 251.
  • the sleeve portion 92 is provided with a boss portion 93 that passes upward through the first housing portion 7, and the boss portion 93 is provided with a second receiving cavity 931.
  • the nozzle 100 comprises an expansion element 13 at least partially located in the inlet plug 1 and/or the housing portion 21.
  • the magnetic portion 22 is provided with a first channel 221 that communicates with the inlet plug 1.
  • the expansion element 13 is provided with a through hole 131 that communicates the inlet plug 1 and the first channel 221 .
  • the expansion member 13 has a trapezoidal cross section, and includes a top portion 132 received in the first receiving cavity 121 and at least partially inserted into the second receiving cavity 931.
  • the body portion 133 The expansion element 13 serves to absorb the expanded volume when the urea freezes, thereby protecting the nozzle 100 from freezing.
  • the nozzle assembly 2 includes a first sealing ring 26 that is sleeved around the periphery of the boss portion 93.
  • the boss portion 93 is received in the first receiving cavity 121 together with the first sealing ring 26.
  • the first sealing ring 26 is radially held between the enlarged portion 12 and the convex portion 93 to achieve sealing.
  • the nozzle assembly 2 includes a stop element 27 that is directed to the upper limit of the first seal ring 26.
  • the limiting element 27 is a metal limiting disc that is sleeved on the raised portion 93.
  • the third housing portion 9 is provided with a second sealing ring 94 that is sleeved on the sleeve portion 92 and radially sandwiched between the sleeve portion 92 and the second housing portion 8 . To achieve a seal.
  • the second housing portion 8 is welded to the third housing portion 9.
  • the valve needle portion 24 includes a base portion 241, a valve stem 242 extending downward from the base portion 241, and a seal 243 at the end of the valve stem 242.
  • the valve needle portion 24 is provided with a second channel 244 communicating with the first channel 221, wherein one end of the spring 25 is at least partially positioned in the first channel 221, the spring 25 The other end is at least partially positioned in the second channel 244.
  • the base portion 241 of the valve needle portion 24 is located in the sleeve portion 92, and the valve stem 242 extends downward beyond the second housing portion 8 and further into the third housing portion 9.
  • a first space 245 is formed between the valve needle portion 24 and the housing portion 21.
  • the valve stem 242 is provided with an opening 246 that communicates with the second channel 244 and the first space 245.
  • the housing portion 21 is further provided with a valve seat 247 that cooperates with the sealing member 243 and a swirling plate 248 that is formed separately from the valve seat 247 and abuts against the valve seat 247.
  • the seal 243 is a sealed ball.
  • the swirling sheet 248 is provided with a plurality of swirl grooves 2481 communicating with the first space 245.
  • the valve seat 247 is provided with an injection hole 2471. When the nozzle coil 23 is energized, the valve needle portion 24 moves upward against the spring 25, and the seal member 243 leaves the injection hole 2471 to effect ejection.
  • the bottom end portion 91 of the third housing portion 9 is provided with a recess 911 for receiving the valve seat 247 and the swirling piece 248.
  • a cooling cavity 30 is formed between the water jacket 3 and the nozzle assembly 2.
  • the nozzle 100 includes an inlet plug 31 and an outlet plug 32 that communicate with the cooling cavity 30.
  • the water jacket 3 is formed by stamping a metal sheet body, and the water jacket 3 is provided with a first cylindrical portion 33 welded to the casing portion and a second portion below the first cylindrical portion 33. a cylindrical portion 34 and a step portion 35 connecting the first cylindrical portion 33 and the second cylindrical portion 34, wherein the diameter of the first cylindrical portion 33 is larger than the diameter of the second cylindrical portion 34 .
  • the mount 5 is pressed against the step portion 35, and the mount 5 is provided with a fitting hole 51 through which the second cylindrical portion 34 passes.
  • the heat shield 6 is fixed to the outer periphery of the first cylindrical portion 33, and the heat shield 6 is provided with an inclined plate 61 on the side of the inlet plug 31 and the outlet plug 32.
  • the mounting seat 5 is provided with a plurality of extending mounting claws 52, and each mounting claw 52 is provided with a mounting hole 521 for a screw to pass through.
  • the heat shield 6 is provided with a positioning hole 62, and the mounting seat 5 is provided with a positioning protrusion 53 positioned in the positioning hole 62.
  • the casing 4 is fixed to the casing portion 21, and the casing 4 is provided with a notch 41; the nozzle 100 includes a connector 231 connected to the nozzle coil 23, and the connector 231 is worn. Pass the gap 41.

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

Abstract

一种喷嘴（100），其包括入口插头（1）、喷嘴总成（2）以及水冷套（3），其中喷嘴总成（2）包括壳体部（21）、磁性部（22）、喷嘴线圈（23）、阀针部（24）以及弹簧（25）。阀针部（24）包括基部（241）、阀杆（242）以及密封件（243）。阀针部（24）与壳体部（21）之间形成了第一空间（245），阀杆（242）设有连通第一空间（245）的开孔（246）。壳体部（21）还设有与密封件（243）相配合的阀座（247）以及与阀座（247）分开制作并贴靠在阀座（247）上的旋流片（248）。水冷套（3）与喷嘴总成（2）之间形成冷却腔体（30），喷嘴（100）包括与冷却腔体（30）相连通的进口插头（31）以及出口插头（32）。壳体部（21）包括向上延伸超过喷嘴线圈（23）的套筒部（92）。该喷嘴避免了尿素溶液渗入到喷嘴线圈中，提高了喷嘴的可靠性。

Description

喷嘴
本申请要求了申请日为2017年7月11日、申请号为201710562336.0、发明名称为“喷嘴”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，属于发动机尾气后处理的技术领域。
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，尿素喷嘴主要用于向排气中喷射雾化的尿素液滴，尿素转化为NH 3与NOx反应后转化为N 2，降低氮氧化物排放。
然而，由于喷嘴往往处于高温的使用环境下，一方面喷嘴容易被高温的排气烧坏；另一方面，析出的尿素容易形成尿素结晶，从而堵塞喷嘴。因此，对于喷嘴的冷却装置以及喷嘴的喷射精度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可靠性较高的喷嘴。
为实现上述目的，本发明采用如下技术方案：一种喷嘴，其包括入口插头、与所述入口插头相配合的喷嘴总成以及固定在所述喷嘴总成外部的水冷套，其中所述喷嘴总成包括壳体部、位于所述壳体部内的磁性部、至少部分位于所述磁性部外围的喷嘴线圈、位于所述磁性部下方的阀针部以及作用在所述磁性部与所述阀针部之间的弹簧，所述磁性部设有与所述入口插头相连通的第一槽道，所述阀针部包括基部、自所述基部向下延伸的阀杆以及位于所述阀杆末端的密封件，所述阀针部设有与所述第一槽道相连通的第二槽道，其中所述弹簧的一端至少部分定位在所述第一槽道中，所述弹簧的另一端至少部分定位在所述第二槽道中；所述阀针部与所述壳体部之间形成了 第一空间，所述阀杆设有连通所述第二槽道与所述第一空间的开孔；所述壳体部还设有与所述密封件相配合的阀座以及与所述阀座分开制作并贴靠在所述阀座上的旋流片，所述旋流片设有连通所述第一空间的若干旋流槽，所述阀座设有喷射孔，当给所述喷嘴线圈通电时，所述阀针部克服所述弹簧向上移动，所述密封件离开所述喷射孔以实现喷射；所述水冷套与所述喷嘴总成之间形成冷却腔体，所述喷嘴包括与所述冷却腔体相连通的进口插头以及出口插头，所述壳体部包括第三壳体部，所述第三壳体部包括底端部以及向上凸出所述底端部的套筒部，其中所述磁性部、所述弹簧以及至少部分所述阀针部均收容在所述套筒部中，所述套筒部向上延伸超过所述喷嘴线圈。
作为本发明进一步改进的技术方案，所述入口插头中设有过滤网。
作为本发明进一步改进的技术方案，所述喷嘴包括至少部分位于所述入口插头及/或所述壳体部中的膨胀元件，所述膨胀元件设有连通所述入口插头与所述第一槽道的穿孔。
作为本发明进一步改进的技术方案，所述壳体部包括第一壳体部以及第二壳体部，其中所述套筒部插入所述第一壳体与所述第二壳体中。
作为本发明进一步改进的技术方案，所述入口插头设有位于底部的扩大部，所述扩大部设有第一收容腔；所述套筒部设有向上穿过所述第一壳体部的凸起部，所述凸起部设有第二收容腔；所述膨胀元件具有呈梯形的横截面，其包括收容于所述第一收容腔内的顶部以及至少部分插入所述第二收容腔内的本体部。
作为本发明进一步改进的技术方案，所述喷嘴总成包括套接在所述凸起部外围的第一密封圈，所述凸起部连同所述第一密封圈被收容在所述第一收容腔中，所述第一密封圈径向卡持在所述扩大部与所述凸起部之间。
作为本发明进一步改进的技术方案，所述喷嘴总成包括向上限位所述第一密封圈的限位元件。
作为本发明进一步改进的技术方案，所述磁性部以过盈配合的方式卡持在所述套筒部中，所述喷嘴还设有用以定位所述磁性部的挡圈。
作为本发明进一步改进的技术方案，所述第二壳体部设有容纳所述喷嘴线圈的容纳腔，所述套筒部穿过所述喷嘴线圈。
作为本发明进一步改进的技术方案，所述第三壳体部设有套接在所述套筒部上且径向卡持在所述套筒部与所述第二壳体部之间的第二密封圈。
作为本发明进一步改进的技术方案，所述第二壳体部与所述第三壳体部焊接在一起。
作为本发明进一步改进的技术方案，所述阀针部的基部位于所述套筒部中，所述阀杆向下延伸超过所述第二壳体部并进一步延伸入所述第三壳体部中。
作为本发明进一步改进的技术方案，所述密封件为密封球。
作为本发明进一步改进的技术方案，所述第三壳体部的底端部设有收容所述阀座与所述旋流片的凹槽。
作为本发明进一步改进的技术方案，所述水冷套是由金属片体冲压形成的，所述水冷套设有焊接在所述壳体部上的第一筒状部、位于所述第一筒状部下方的第二筒状部以及连接所述第一筒状部与所述第二筒状部的台阶部，其中所述第一筒状部的直径大于所述第二筒状部的直径。
作为本发明进一步改进的技术方案，所述喷嘴还包括抵压在所述台阶部上的安装座，所述安装座设有供所述第二筒状部穿过的装配孔。
作为本发明进一步改进的技术方案，所述喷嘴还包括固定在所述第一筒状部外围的隔热罩，所述隔热罩设有位于所述进口插头以及所述出口插头旁侧的倾斜板。
作为本发明进一步改进的技术方案，所述安装座设有若干延伸的安装爪，每一个安装爪均设有用以供螺钉穿过的安装孔。
作为本发明进一步改进的技术方案，所述隔热罩设有定位孔，所述安装座设有定位在所述定位孔中的定位凸起。
作为本发明进一步改进的技术方案，所述喷嘴包括套接在所述入口插头上且与所述壳体部固定在一起的罩壳，所述罩壳设有一个缺口；所述喷嘴包括与所述喷嘴线圈相连的接插件，所述接插件穿过所述缺口。
相较于现有技术，本发明通过将所述磁性部、所述弹簧以及至少部分所述阀针部均收容在所述套筒部中，并使所述套筒部向上延伸超过所述喷嘴线圈，从而避免了尿素溶液渗入到喷嘴线圈中，提高了喷嘴的可靠性。
附图说明
图1是本发明喷嘴的立体示意图。
图2是图1另一角度的立体示意图。
图3是图1的俯视图。
图4是图1的主视图。
图5是图1的仰视图。
图6是图1的部分立体分解图，其中安装座被分离出来。
图7是图6进一步的部分立体分解图，其中安装座与隔热罩被分离出来。
图8是去除图7中安装座与隔热罩后的立体分解图，其中进口插头以及出口插头被分离出来。
图9是去除图8中进口插头以及出口插头后的立体分解图，其中水冷套被分离出来。
图10是去除图9中水冷套后的立体分解图。
图11是图10中喷嘴总成的部分立体分解图。
图12是去除图11中第三壳体部后的立体分解图。
图13是图11中第三壳体部的立体分解图。
图14是沿图3中A-A线的剖视图。
图15是沿图3中B-B线的剖视图。
图16是本发明喷嘴于另一实施方式中的立体示意图。
图17是图14的部分立体分解图。
具体实施方式
请参图1至图15所示，本发明揭示了一种喷嘴100，用以安装在发动机后处理系统中以向尾气中喷射雾化的尿素液滴。所述喷嘴100包括入口插头1、与所述入口插头1相配合的喷嘴总成2、固定在所述喷嘴总成2外部的水冷套3、套接在所述入口插头1上的罩壳4、用以将所述喷嘴100进行安装的安装座5以及隔热罩6。
所述入口插头1用以连接尿素管，其包括位于其中以对尿素溶液进行过滤的过滤网11以及位于底部的扩大部12，所述扩大部12设有第一收容腔121(参图15所示)。
请参图13及图14所示，所述喷嘴总成2包括壳体部21、位于所述壳体部21内的磁性部22、至少部分位于所述磁性部22外围的喷嘴线圈23、位于所述磁性部22下方的阀针部24以及作用在所述磁性部22与所述阀针部24之间的弹簧25。当给所述喷嘴线圈23通电时，所述阀针部24能够克服所述弹簧25向上移动。
在本发明图示的实施方式中，所述壳体部21包括第一壳体部7、第二壳体部8以及第三壳体 部9。所述第一壳体部7至少部分插入所述第一收容腔121内。所述第二壳体部8设有容纳所述喷嘴线圈23的容纳腔81以及用以与所述水冷套3相焊接的台阶部82。
所述第三壳体部9包括底端部91以及向上凸出所述底端部91的套筒部92，其中所述套筒部92插入所述第一壳体7与所述第二壳体8中。所述磁性部22、所述弹簧25以及至少部分所述阀针部24均收容在所述套筒部92中。所述套筒部92穿过所述喷嘴线圈23。请参图14所示，如此设置，能够避免尿素溶液通过缝隙渗透到喷嘴线圈23中，从而提高了产品的可靠性。组装时，首先将阀针部24装入套筒部92，然后将磁性部22以过盈配合的方式压入所述套筒部92中。在本发明图示的实施方式中，由于磁性部22在竖直方向上是可移动调节的，因此能够准确的调整阀针部24与磁性部22之间的间隙。这个间隙用以供阀针部24移动，以打开喷嘴100。在当所述磁性部22压装到位时，再将弹簧25装入，并通过挡圈251对其进行限位。
所述套筒部92设有向上穿过所述第一壳体部7的凸起部93，所述凸起部93设有第二收容腔931。所述喷嘴100包括至少部分位于所述入口插头1及/或所述壳体部21中的膨胀元件13。所述磁性部22设有与所述入口插头1相连通的第一槽道221。所述膨胀元件13设有连通所述入口插头1与所述第一槽道221的穿孔131。在本发明图示的实施方式中，所述膨胀元件13具有呈梯形的横截面，其包括收容于所述第一收容腔121内的顶部132以及至少部分插入所述第二收容腔931内的本体部133。所述膨胀元件13用以在尿素结冰时，吸收膨胀的体积，从而保护喷嘴100不被冻坏。
所述喷嘴总成2包括套接在所述凸起部93外围的第一密封圈26，所述凸起部93连同所述第一密封圈26被收容在所述第一收容腔121中，所述第一密封圈26径向卡持在所述扩大部12与所述凸起部93之间，以实现密封。所述喷嘴总成2包括向上限位所述第一密封圈26的限位元件27。在本发明图示的实施方式中，所述限位元件27是金属限位盘，其套接在所述凸起部93上。
所述第三壳体部9设有套接在所述套筒部92上且径向卡持在所述套筒部92与所述第二壳体部8之间的第二密封圈94，以实现密封。在本发明图示的实施方式中，所述第二壳体部8与所述第三壳体部9焊接在一起。
所述阀针部24包括基部241、自所述基部241向下延伸的阀杆242以及位于所述阀杆242末端的密封件243。所述阀针部24设有与所述第一槽道221相连通的第二槽道244，其中所述弹簧25的一端至少部分定位在所述第一槽道221中，所述弹簧25的另一端至少部分定位在所述第二 槽道244中。所述阀针部24的基部241位于所述套筒部92中，所述阀杆242向下延伸超过所述第二壳体部8并进一步延伸入所述第三壳体部9中。所述阀针部24与所述壳体部21之间形成了第一空间245。所述阀杆242设有连通所述第二槽道244与所述第一空间245的开孔246。所述壳体部21还设有与所述密封件243相配合的阀座247以及与所述阀座247分开制作并贴靠在所述阀座247上的旋流片248。在本发明图示的实施方式中，所述密封件243为密封球。所述旋流片248设有连通所述第一空间245的若干旋流槽2481。所述阀座247设有喷射孔2471。当给所述喷嘴线圈23通电时，所述阀针部24克服所述弹簧25向上移动，所述密封件243离开所述喷射孔2471以实现喷射。在本发明图示的实施方式中，所述第三壳体部9的底端部91设有收容所述阀座247与所述旋流片248的凹槽911。
所述水冷套3与所述喷嘴总成2之间形成冷却腔体30。所述喷嘴100包括与所述冷却腔体30相连通的进口插头31以及出口插头32。
所述水冷套3是由金属片体冲压形成的，所述水冷套3设有焊接在所述壳体部上的第一筒状部33、位于所述第一筒状部33下方的第二筒状部34以及连接所述第一筒状部33与所述第二筒状部34的台阶部35，其中所述第一筒状部33的直径大于所述第二筒状部34的直径。所述安装座5抵压在所述台阶部35上，所述安装座5设有供所述第二筒状部34穿过的装配孔51。所述隔热罩6固定在所述第一筒状部33的外围，所述隔热罩6设有位于所述进口插头31以及所述出口插头32旁侧的倾斜板61。
请参图7所示，在本发明的一种实施方式中，所述安装座5设有若干延伸的安装爪52，每一个安装爪52均设有用以供螺钉穿过的安装孔521。所述隔热罩6设有定位孔62，所述安装座5设有定位在所述定位孔62中的定位凸起53。
所述罩壳4与所述壳体部21固定在一起，所述罩壳4设有一个缺口41；所述喷嘴100包括与所述喷嘴线圈23相连的接插件231，所述接插件231穿过所述缺口41。
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 (20)

  1. 一种喷嘴，其包括入口插头、与所述入口插头相配合的喷嘴总成以及固定在所述喷嘴总成外部的水冷套，其中所述喷嘴总成包括壳体部、位于所述壳体部内的磁性部、至少部分位于所述磁性部外围的喷嘴线圈、位于所述磁性部下方的阀针部以及作用在所述磁性部与所述阀针部之间的弹簧，其特征在于：所述磁性部设有与所述入口插头相连通的第一槽道，所述阀针部包括基部、自所述基部向下延伸的阀杆以及位于所述阀杆末端的密封件，所述阀针部设有与所述第一槽道相连通的第二槽道，其中所述弹簧的一端至少部分定位在所述第一槽道中，所述弹簧的另一端至少部分定位在所述第二槽道中；所述阀针部与所述壳体部之间形成了第一空间，所述阀杆设有连通所述第二槽道与所述第一空间的开孔；所述壳体部还设有与所述密封件相配合的阀座以及与所述阀座分开制作并贴靠在所述阀座上的旋流片，所述旋流片设有连通所述第一空间的若干旋流槽，所述阀座设有喷射孔，当给所述喷嘴线圈通电时，所述阀针部克服所述弹簧向上移动，所述密封件离开所述喷射孔以实现喷射；所述水冷套与所述喷嘴总成之间形成冷却腔体，所述喷嘴包括与所述冷却腔体相连通的进口插头以及出口插头；所述壳体部包括第三壳体部，所述第三壳体部包括底端部以及向上凸出所述底端部的套筒部，其中所述磁性部、所述弹簧以及至少部分所述阀针部均收容在所述套筒部中，所述套筒部向上延伸超过所述喷嘴线圈。
  2. 如权利要求1所述的喷嘴，其特征在于：所述入口插头中设有过滤网。
  3. 如权利要求1所述的喷嘴，其特征在于：所述喷嘴包括至少部分位于所述入口插头及/或所述壳体部中的膨胀元件，所述膨胀元件设有连通所述入口插头与所述第一槽道的穿孔。
  4. 如权利要求3所述的喷嘴，其特征在于：所述壳体部包括第一壳体部以及第二壳体部，其中所述套筒部插入所述第一壳体与所述第二壳体中。
  5. 如权利要求4所述的喷嘴，其特征在于：所述入口插头设有位于底部的扩大部，所述扩大部设有第一收容腔；所述套筒部设有向上穿过所述第一壳体部的凸起部，所述凸起部设有第二收容腔；所述膨胀元件具有呈梯形的横截面，其包括收容于所述第一收容腔内的顶部以及至少部分插入所述第二收容腔内的本体部。
  6. 如权利要求5所述的喷嘴，其特征在于：所述喷嘴总成包括套接在所述凸起部外围的第一 密封圈，所述凸起部连同所述第一密封圈被收容在所述第一收容腔中，所述第一密封圈径向卡持在所述扩大部与所述凸起部之间。
  7. 如权利要求6所述的喷嘴，其特征在于：所述喷嘴总成包括向上限位所述第一密封圈的限位元件。
  8. 如权利要求4所述的喷嘴，其特征在于：所述磁性部以过盈配合的方式卡持在所述套筒部中，所述喷嘴还设有用以定位所述磁性部的挡圈。
  9. 如权利要求4所述的喷嘴，其特征在于：所述第二壳体部设有容纳所述喷嘴线圈的容纳腔，所述套筒部穿过所述喷嘴线圈。
  10. 如权利要求4所述的喷嘴，其特征在于：所述第三壳体部设有套接在所述套筒部上且径向卡持在所述套筒部与所述第二壳体部之间的第二密封圈。
  11. 如权利要求10所述的喷嘴，其特征在于：所述第二壳体部与所述第三壳体部焊接在一起。
  12. 如权利要求4所述的喷嘴，其特征在于：所述阀针部的基部位于所述套筒部中，所述阀杆向下延伸超过所述第二壳体部并进一步延伸入所述第三壳体部中。
  13. 如权利要求12所述的喷嘴，其特征在于：所述密封件为密封球。
  14. 如权利要求4所述的喷嘴，其特征在于：所述第三壳体部的底端部设有收容所述阀座与所述旋流片的凹槽。
  15. 如权利要求1至14项中任意一项所述的喷嘴，其特征在于：所述水冷套是由金属片体冲压形成的，所述水冷套设有焊接在所述壳体部上的第一筒状部、位于所述第一筒状部下方的第二筒状部以及连接所述第一筒状部与所述第二筒状部的台阶部，其中所述第一筒状部的直径大于所述第二筒状部的直径。
  16. 如权利要求15所述的喷嘴，其特征在于：所述喷嘴还包括抵压在所述台阶部上的安装座，所述安装座设有供所述第二筒状部穿过的装配孔。
  17. 如权利要求16所述的喷嘴，其特征在于：所述喷嘴还包括固定在所述第一筒状部外围的隔热罩，所述隔热罩设有位于所述进口插头以及所述出口插头旁侧的倾斜板。
  18. 如权利要求17所述的喷嘴，其特征在于：所述安装座设有若干延伸的安装爪，每一个安装爪均设有用以供螺钉穿过的安装孔。
  19. 如权利要求17所述的喷嘴，其特征在于：所述隔热罩设有定位孔，所述安装座设有定位在所述定位孔中的定位凸起。
  20. 如权利要求1所述的喷嘴，其特征在于：所述喷嘴包括套接在所述入口插头上且与所述壳体部固定在一起的罩壳，所述罩壳设有一个缺口；所述喷嘴包括与所述喷嘴线圈相连的接插件，所述接插件穿过所述缺口。
PCT/CN2018/084391 2017-07-11 2018-04-25 喷嘴 WO2019011038A1 (zh)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013037493A1 (de) * 2011-09-13 2013-03-21 Cummins Ltd. Elektromagnetisches dosierventil
EP2647803A1 (en) * 2012-04-05 2013-10-09 Delphi Technologies Holding S.à.r.l. Reagent dosing pump assembly with connector element
CN103764964A (zh) * 2011-08-30 2014-04-30 坦尼科汽车操作有限公司 具有磁通桥和磁通间隔的电磁控制式喷射器
CN105065095A (zh) * 2015-08-21 2015-11-18 南岳电控(衡阳)工业技术有限公司 一种尿素直喷喷嘴
CN205400862U (zh) * 2016-02-22 2016-07-27 天纳克（苏州）排放系统有限公司 喷嘴组件
JP2016217138A (ja) * 2015-05-14 2016-12-22 株式会社日本自動車部品総合研究所 冷却構造
CN106930808A (zh) * 2015-12-31 2017-07-07 天纳克（苏州）排放系统有限公司 集成装置、尾气后处理系统以及控制方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103764964A (zh) * 2011-08-30 2014-04-30 坦尼科汽车操作有限公司 具有磁通桥和磁通间隔的电磁控制式喷射器
WO2013037493A1 (de) * 2011-09-13 2013-03-21 Cummins Ltd. Elektromagnetisches dosierventil
EP2647803A1 (en) * 2012-04-05 2013-10-09 Delphi Technologies Holding S.à.r.l. Reagent dosing pump assembly with connector element
JP2016217138A (ja) * 2015-05-14 2016-12-22 株式会社日本自動車部品総合研究所 冷却構造
CN105065095A (zh) * 2015-08-21 2015-11-18 南岳电控(衡阳)工业技术有限公司 一种尿素直喷喷嘴
CN106930808A (zh) * 2015-12-31 2017-07-07 天纳克（苏州）排放系统有限公司 集成装置、尾气后处理系统以及控制方法
CN205400862U (zh) * 2016-02-22 2016-07-27 天纳克（苏州）排放系统有限公司 喷嘴组件

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