WO2023236568A1 - 电子膨胀阀 - Google Patents

电子膨胀阀 Download PDF

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Publication number
WO2023236568A1
WO2023236568A1 PCT/CN2023/075055 CN2023075055W WO2023236568A1 WO 2023236568 A1 WO2023236568 A1 WO 2023236568A1 CN 2023075055 W CN2023075055 W CN 2023075055W WO 2023236568 A1 WO2023236568 A1 WO 2023236568A1
Authority
WO
WIPO (PCT)
Prior art keywords
mounting hole
electronic expansion
valve body
hard seal
expansion valve
Prior art date
Application number
PCT/CN2023/075055
Other languages
English (en)
French (fr)
Inventor
张积友
徐冠军
陈勇好
Original Assignee
浙江盾安人工环境股份有限公司
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.)
Filing date
Publication date
Application filed by 浙江盾安人工环境股份有限公司 filed Critical 浙江盾安人工环境股份有限公司
Publication of WO2023236568A1 publication Critical patent/WO2023236568A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators

Definitions

  • the present application relates to the technical field of electronic expansion valves, specifically, to an electronic expansion valve.
  • the present application provides an electronic expansion valve to solve the problem in the prior art that the soft seal between the installation hole and the valve body component is prone to failure.
  • this application provides an electronic expansion valve, including: a coil assembly, the coil assembly has a mounting hole; a valve body assembly, part of the valve body assembly penetrates into the mounting hole; a hard seal, the hard seal is provided with a mounting hole In the gap between the inner wall of the valve body and the outer wall of the valve body assembly, the hard seal fits the valve body assembly and the mounting hole in a sealing manner.
  • the hard seal is disposed on the inner wall of the installation hole, the radial dimension of the hard seal is D1, the radial dimension of the installation hole is D3, and D3-D1 ⁇ 0.2mm.
  • the radial dimension of the hard seal is D1
  • the outer diameter of the portion of the valve body assembly that seals with the hard seal is D2, and D2 ⁇ D1.
  • the hard seal has a first chamfer on a side facing the coil assembly, and the hard seal has a second chamfer on a side facing the valve body assembly, wherein the first chamfer is on the hard seal.
  • the radial width of the seal is L1, L1 ⁇ (D3-D1)/2.
  • valve body assembly includes an interconnected sleeve and a valve body part, the sleeve part penetrates into the installation hole, the hard seal is an annular boss, and the annular boss is located between the inner wall of the installation hole and the outer wall of the sleeve, An annular boss is provided in the mounting hole toward the valve The inner wall of one end of the body is in sealing fit with the outer wall of the sleeve, or the annular boss is provided on the outer wall of the sleeve facing the valve body and is in sealing fit with the inner wall of the mounting hole.
  • the coil assembly includes a plastic housing and a coil part arranged in the plastic housing.
  • the plastic housing has a mounting hole, and the hard seal and the plastic housing are an integral structure.
  • the coil assembly includes a plastic shell and a coil part.
  • the plastic shell includes an injection molded shell and an annular member connected to each other.
  • the coil part is located in the cavity of the injection molded shell.
  • the injection molded shell has a first through hole
  • the annular member has a second through hole.
  • the first through hole and the second through hole form a mounting hole
  • the hard sealing member is arranged on the inner wall of the second through hole
  • the hard sealing member and the ring member are an integral structure.
  • the annular member includes a first annular plate and a second annular plate disposed on the first annular plate.
  • the outer diameter of the second annular plate is smaller than The outer diameter of the first annular plate, the second annular plate is located in the first installation groove, the first annular plate and the injection molded shell are in contact;
  • the plastic shell also includes a first limiting structure provided on the injection molded shell, and the annular member also includes The second limiting structure is provided on the first annular plate, and the first limiting structure and the second limiting structure are limitedly matched.
  • the first limiting structure includes a first positioning protrusion and a first positioning groove provided on the injection molded shell; the second limiting structure is located on a side of the first annular plate facing the second annular plate, and the second limiting structure It includes a second positioning protrusion and a second positioning groove provided on the first annular plate; wherein the second positioning protrusion is provided in the first positioning groove, and the first positioning protrusion is provided in the second positioning groove.
  • the coil assembly includes an injection molded shell, the injection molded shell has a first through hole and a first mounting slot arranged around the first through hole, the first through hole and the first mounting slot constitute a mounting hole, and the valve body assembly includes an interconnected sleeve.
  • the pipe and the valve body part, the casing part passes through the first installation groove and is inserted into the first through hole, and the hard seal is set on the outer wall of the casing, or the hard seal and the casing are an integrated structure, and the hard seal is The sealing member is sealingly matched with the inner wall of the first installation groove.
  • the electronic expansion valve also includes a protective cover, which is connected to the coil assembly.
  • the protective cover includes a blocking head, and the blocking head blocks an opening of the installation hole.
  • the coil assembly includes a plastic housing and a coil part disposed in the plastic housing.
  • the plastic housing has a second installation groove provided around the installation hole.
  • the protective cover also includes an annular limiting plate provided around the blocking head. One end of the head is inserted into the second installation groove, and the annular limiting plate is in contact with the plastic housing; the coil assembly also includes a third limiting structure provided on the plastic housing, and the protective cover also includes a third limiting structure provided on the annular limiting plate.
  • Four limit structures, the third limit structure and the fourth limit structure have limited cooperation.
  • the coil assembly includes a plastic housing and a coil part arranged in the plastic housing, and the protective cover and the plastic housing are an integral structure.
  • the protective cover has an integrated structure, and the protective cover also includes a protective sleeve connected to the blocking head.
  • the protective sleeve has a first accommodation cavity, the coil assembly is arranged in the first accommodation cavity, and the blocking head has a second accommodation cavity.
  • the two accommodation chambers are connected with the installation holes.
  • an electronic expansion valve which includes: a coil component, the coil component has a mounting hole; a valve body component, part of the valve body component penetrates into the mounting hole; and a hard seal, which is provided in the installation hole.
  • the hard sealing member seals with the valve body assembly and the mounting hole. Adopt this plan and pass Do not block one end of the mounting hole of the coil assembly with the hard seal to prevent debris from entering the coil assembly from one end of the mounting hole during the operation of the electronic expansion valve, causing failure of the coil assembly, and ensuring the reliability of the electronic expansion valve. .
  • this solution uses a hard sealing fit in which the valve body component and the annular boss directly seal and fit.
  • this solution avoids It eliminates the problem that the soft seal is not resistant to high temperatures and is prone to wear and tear, resulting in seal failure, which in turn leads to the failure of the electronic expansion valve. It ensures the sealing between the valve body component and the coil component and improves the reliability of the electronic expansion valve.
  • Figure 1 shows a schematic structural diagram of an electronic expansion valve provided in Embodiment 1 of the present application
  • Figure 2 shows an enlarged view of position A in Figure 1;
  • Figure 3 shows a schematic structural diagram of the coil assembly, protective cover and annular boss in Figure 1;
  • Figure 4 shows an enlarged view of position C in Figure 3;
  • Figure 5 shows a schematic structural diagram of the coil assembly, protective cover and annular boss provided in Embodiment 2 of the present invention
  • Figure 6 shows an enlarged view of position B in Figure 5;
  • Figure 7 shows a schematic structural view of the ring member in Figure 5;
  • Figure 8 shows a schematic structural diagram of an electronic expansion valve provided in Embodiment 3 of the present invention.
  • Figure 9 shows an enlarged view of position D in Figure 8.
  • Figure 10 shows a schematic structural diagram of the coil assembly, protective cover and annular boss provided in Embodiment 4 of the present invention
  • Figure 11 shows a schematic structural diagram of the coil assembly, protective cover and annular boss provided in the fifth embodiment of the present invention.
  • Embodiment 1 of the present application provides an electronic expansion valve, including: a coil assembly 10, the coil assembly 10 has a mounting hole 11; a valve body assembly 40, the valve body assembly 40 is partially inserted and installed Inside the hole 11; the hard seal 30 is disposed in the gap between the inner wall of the mounting hole 11 and the outer wall of the valve body assembly 40. The hard seal 30 seals with the valve body assembly 40 and the mounting hole 11.
  • one end of the mounting hole 11 of the coil assembly 10 is blocked by the hard seal 30 to prevent debris from entering the coil assembly 10 from one end of the mounting hole 11 during the operation of the electronic expansion valve.
  • the reliability of the electronic expansion valve is ensured.
  • this solution adopts a hard sealing fit in which the valve body assembly 40 and the hard sealing member 30 are directly sealed and matched. Compared with the prior art method of using a soft sealing member to seal the gap between the valve body assembly and the mounting hole, this solution The solution avoids seal failure due to problems such as the soft seal being not resistant to high temperatures and easy to wear, which in turn leads to the failure of the electronic expansion valve. It ensures the sealing between the valve body assembly 40 and the coil assembly 10 and improves the reliability of the electronic expansion valve.
  • the hard seal 30 is disposed on the inner wall of the mounting hole 11.
  • the radial dimension of the hard seal 30 is D1
  • the radial dimension of the mounting hole 11 is D3, and D3-D1 ⁇ 0.2mm.
  • the dimensions of D1 and D3 are limited to ensure the stability of the seal between the hard seal 30 and the valve body assembly 40 while ensuring the reliability of the assembly of the coil assembly 10 and the valve body assembly 40. This avoids the situation where the coil assembly 10 and the valve body assembly 40 are difficult to assemble due to interference or accuracy when D1 and D3 are similar or D3 is less than D1, thereby ensuring the reliability of the electronic expansion valve.
  • the radial dimension of the hard seal 30 is D1
  • the outer diameter of the portion of the valve body assembly 40 that seals with the hard seal 30 is D2, and D2 ⁇ D1.
  • the dimensions of D1 and D2 are limited to further ensure the stability of the seal between the hard seal 30 and the valve body assembly 40 and the reliability of the assembly of the coil assembly 10 and the valve body assembly 40 .
  • the hard seal 30 has a first chamfer 31 on the side facing the coil assembly 10
  • the hard seal 30 has a second chamfer 32 on the side facing the valve body assembly 40
  • the radial width of the first chamfer 31 on the hard seal 30 is L1, L1 ⁇ (D3-D1)/2.
  • the valve body assembly 40 includes an interconnected sleeve 41 and a valve body portion 42.
  • the sleeve 41 partially penetrates into the installation hole 11.
  • the hard seal 30 is an annular boss located on the inner wall of the installation hole 11 and Between the outer walls of the sleeve 41, an annular boss is provided on the inner wall of one end of the mounting hole 11 facing the valve body part 42 and sealingly fits with the outer wall of the sleeve 41, or an annular boss is provided on the inner wall of the sleeve 41 facing the valve body part 42 The outer wall of one side is sealed and matched with the inner wall of the mounting hole 11. This arrangement facilitates the processing and arrangement of the annular boss, and facilitates the sealing of the gap between the sleeve 41 and the coil assembly 10 by the annular boss.
  • the annular boss can also be provided on the outer circumference of the sleeve 41 and be integrated with the sleeve 41 , or, in electronic expansion valves with other structures, the annular boss can also be provided on the outer circumference of the valve body 42 surface and is integrally provided with the valve body portion 42 .
  • the coil assembly 10 includes a plastic housing 12 and a coil portion 13 disposed inside the plastic housing 12.
  • the plastic housing 12 has a mounting hole 11, and the hard seal 30 and the plastic housing 12 are integrated. structure. This arrangement facilitates the processing of the hard seal 30 .
  • the electronic expansion valve also includes a protective cover 20 , which is connected to the coil assembly 10 .
  • the protective cover 20 includes a blocking head 21 , and the blocking head 21 blocks an opening of the mounting hole 11 .
  • the protective cover 20 by providing the protective cover 20 , water stains flowing in from the upper opening of the coil assembly 10 are prevented from flowing into the coil portion 13 along the gap between the sleeve 41 and the mounting hole 11 , or fluid is prevented from flowing from the upper opening of the coil assembly 10
  • the opening directly enters the coil part 13, causing corrosion of the coil stator shell and stator plate, eventually leading to product failure, ensuring the reliability of the electronic expansion valve.
  • the coil assembly 10 includes a plastic housing 12 and a coil portion 13 disposed inside the plastic housing 12 .
  • the plastic housing 12 has a second mounting groove arranged around the mounting hole 11 .
  • the protective cover 20 also includes a plastic housing 12 surrounding the mounting hole 11 .
  • the plug 21 is provided with an annular limiting plate 22, one end of the plugging head 21 is inserted into the second installation groove, and the annular limiting plate 22 is in contact with the plastic housing 12;
  • the coil assembly 10 also includes a third element provided on the plastic housing 12.
  • the protective cover 20 also includes a fourth limiting structure 23 provided on the annular limiting plate 22.
  • the third limiting structure 14 and the fourth limiting structure 23 are limitedly matched.
  • the blocking head 21 is inserted into the second installation groove and limitedly matched with the second installation groove to facilitate the installation and positioning of the protective cover 20.
  • the protective cover 20 and the plastic housing 12 pass through the third limiting structure.
  • the limited cooperation between 14 and the fourth limiting structure 23 further improves the positioning accuracy of the protective cover 20 and the plastic housing 12 and ensures the installation reliability and connection stability of the protective cover 20 and the plastic housing 12 .
  • the third limiting structure 14 includes a third positioning protrusion and a third positioning groove provided on the plastic housing 12
  • the fourth limiting structure 23 includes a third positioning groove provided on the annular limiting plate 22
  • the fourth positioning protrusion and the fourth positioning groove, the third positioning protrusion and the fourth positioning protrusion are annular protrusions
  • the third positioning groove and the fourth positioning groove are annular grooves
  • the third positioning protrusion is arranged on The fourth positioning groove is in limited cooperation with the fourth positioning groove
  • the fourth positioning protrusion is arranged in the third positioning groove and is limited in cooperation with the third positioning groove.
  • a third positioning groove is provided between the two third positioning protrusions, there are two fourth positioning grooves, and the fourth positioning protrusion is provided between the two fourth positioning grooves. ; Or there are two third positioning grooves, the third positioning protrusion is provided between the two third positioning grooves, the number of the fourth positioning protrusions is two, and the fourth positioning groove is provided between the two fourth positioning protrusions. .
  • This arrangement facilitates the positioning connection between the protective cover 20 and the plastic housing 12 and ensures the reliability and stability of the connection between the plastic housing 12 and the protective cover 20 .
  • the numbers of the third positioning protrusions, the fourth positioning protrusions, the third positioning grooves, and the fourth positioning grooves can be adjusted according to the actual situation.
  • the second embodiment of the present invention provides an electronic expansion valve.
  • the coil assembly 10 includes a plastic housing 12 and a coil part 13.
  • the plastic housing 12 It includes an injection molded shell 121 and a ring member 122 connected to each other.
  • the coil part 13 is located in the cavity of the injection molded shell 121.
  • the injection molded shell 121 has a first through hole.
  • 122 has a second through hole.
  • the first through hole and the second through hole form the mounting hole 11.
  • the hard seal 30 is disposed on the inner wall of the second through hole.
  • the hard seal 30 and the annular member 122 are an integral structure. With this arrangement, the hard seal 30 and the annular member 122 are integrally formed, which facilitates the processing of the hard seal 30 .
  • the injection molding shell 121 and the ring member 122 are provided separately, and the ring member 122 and the injection molding shell 121 are welded and connected.
  • the annular member 122 includes a first annular plate 1221 and a second annular plate 1222 provided on the first annular plate 1221.
  • the outer diameter of the two annular plates 1222 is smaller than the outer diameter of the first annular plate 1221.
  • the second annular plate 1222 is located in the first installation groove, and the first annular plate 1221 is in contact with the injection molded shell 121; the plastic shell 12 also includes an injection molded
  • the first limiting structure 123 on the shell 121 and the annular member 122 also include a second limiting structure 1223 provided on the first annular plate 1221.
  • the first limiting structure 123 and the second limiting structure 1223 are limitedly matched.
  • the second annular plate 1222 of the annular member 122 is disposed in the first installation groove and is limitedly matched with the first installation groove to facilitate the installation and positioning of the annular member 122.
  • the first annular plate 1221 and the injection molded shell 121 By abutting and limiting the first limiting structure 123 and the second limiting structure 1223, the positioning accuracy of the ring member 122 is further improved, ensuring the reliability of installation and the stability of the connection between the ring member 122 and the injection molded shell 121.
  • the injection molded shell 121 and the first limiting structure 123 are integrated, and the ring member 122 and the second limiting structure 1223 are integrated.
  • the injection molded shell 121 and the ring member 122 are connected through a welding process.
  • the first limiting structure 123 includes a first positioning protrusion and a first positioning groove provided on the injection molded shell 121; the second limiting structure 1223 is located on the side of the first annular plate 1221 facing the second annular plate 1222,
  • the second limiting structure 1223 includes a second positioning protrusion 12231 and a second positioning groove 12232 provided on the first annular plate 1221; wherein, the second positioning protrusion 12231 is provided in the first positioning groove, and the first positioning protrusion 12231 is provided in the first positioning groove.
  • the positioning of the injection molded shell 121 and the first annular plate 1221 is completed through the limited cooperation between the positioning protrusion and the positioning groove, thereby improving the installation accuracy and positioning reliability.
  • the first positioning protrusion 12231 and the second positioning protrusion 12231 are both annular protrusions
  • the first positioning groove and the second positioning groove 12232 are both annular grooves.
  • the first positioning protrusion is provided between the two first positioning grooves
  • the second positioning groove 12232 is provided between the two second positioning protrusions 12231, further ensuring injection molding.
  • the numbers of the first positioning protrusion, the second positioning protrusion 12231, the first positioning groove and the second positioning groove 12232 can be adjusted according to the actual situation.
  • the third embodiment of the present invention provides an electronic expansion valve.
  • the coil assembly 10 includes an injection molding shell 121, and the injection molding shell 121 has a first through hole and a A first mounting groove is provided around the first through hole.
  • the first through hole and the first mounting groove constitute the mounting hole 11.
  • the valve body assembly 40 includes a sleeve 41 and a valve body portion 42 connected to each other.
  • the sleeve 41 partially passes through the first mounting slot.
  • An installation groove is passed through the first through hole, and the hard seal 30 is sleeved on the outer wall of the casing 41, or the hard seal 30 and the casing 41 are an integral structure, and the hard seal 30 and the first installation groove are The inner wall sealing fit.
  • the hard seal 30 and the sleeve 41 can be processed and arranged in one piece, which facilitates the rapid processing of the hard seal 30.
  • the hard seal 30 and the sleeve 41 can be processed separately and fixedly connected, so that the hard seal can be ensured at the same time.
  • 30 and casing 41 are structurally strong degree, the hard seal 30 is arranged in the first installation groove and sealingly cooperates with the first installation groove, ensuring the sealing effect of the hard seal 30 on the gap between the installation hole 11 and the sleeve 41 and ensuring the reliability of the seal.
  • the fourth embodiment of the present invention provides an electronic expansion valve.
  • the coil assembly 10 includes a plastic housing 12 and a coil part 13 disposed in the plastic housing 12.
  • the protective cover 20 and the plastic housing 12 are of an integrated structure. This arrangement facilitates the processing of the protective cover 20 .
  • Embodiment 5 of the present invention provides an electronic expansion valve.
  • the protective cover 20 is an integrated structure, and the protective cover 20 also includes a protective cover connected to the blocking head 21.
  • the protective sleeve 24 has a first accommodation cavity, the coil assembly 10 is arranged in the first accommodation cavity, the blocking head 21 has a second accommodation cavity, and the second accommodation cavity is connected with the installation hole 11 .
  • the overall protection of the coil assembly 10 is achieved through the protective cover 20, which improves the reliability of the coil assembly 10 and ensures the performance of the electronic expansion valve.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

一种电子膨胀阀，包括：线圈组件（10），线圈组件具有安装孔（11）；阀体组件（40），阀体组件部分穿入安装孔内；硬密封件（30），硬密封件设置在安装孔的内壁和阀体组件的外壁之间的间隙内，硬密封件和阀体组件、安装孔均密封配合。该电子膨胀阀采用阀体组件和硬密封件直接密封配合的硬密封配合，避免了由于软密封不耐高温、易磨损等问题导致密封失效，进而导致电子膨胀阀失效的情况，保证阀体组件和线圈组件之间的密封性，提高电子膨胀阀的可靠性。

Description

电子膨胀阀
本申请要求于2022年6月6日提交至中国国家知识产权局、申请号为202210631689.2、发明创造名称为“电子膨胀阀”的专利申请的优先权。
技术领域
本申请涉及电子膨胀阀技术领域，具体而言，涉及一种电子膨胀阀。
背景技术
电子膨胀阀安装孔与阀体组件装配后，安装孔和阀体组件表面之间存在较大间隙，导致水渍等污染物易沿着阀体组件与安装孔之间的间隙流入线圈组件内，造成线圈组件的定子外壳和定子极板锈蚀，最终导致产品失效。
针对上述情况，现有技术中的电子膨胀阀通常采用密封圈等软密封件对阀体组件和安装孔之间的间隙进行密封，但软密封件不耐高温，易磨损，电子膨胀阀在工作过程中一直处于振动状态，易出现密封圈磨损导致密封失效的情况；同时，线圈组件的内部温度会随工作升高，高温会对密封位置的密封圈产生影响，导致密封圈高温失效、寿命减短的情况。
申请内容
本申请提供了一种电子膨胀阀，以解决现有技术中的安装孔和阀体组件之间的软密封易失效的问题。
为了解决上述问题，本申请提供了一种电子膨胀阀，包括：线圈组件，线圈组件具有安装孔；阀体组件，阀体组件部分穿入安装孔内；硬密封件，硬密封件设置安装孔的内壁和阀体组件的外壁之间的间隙内，硬密封件和阀体组件、安装孔均密封配合。
进一步地，硬密封件设置在安装孔的内壁上，硬密封件的径向尺寸为D1，安装孔的径向尺寸为D3，D3-D1＜0.2mm。
进一步地，硬密封件的径向尺寸为D1，阀体组件与硬密封件密封配合的部分的外径为D2，D2≤D1。
进一步地，在安装孔的轴线方向上，硬密封件朝向线圈组件的一侧具有第一倒角，硬密封件朝向阀体组件的一侧具有第二倒角，其中，第一倒角在硬密封件的径向宽度为L1，L1＜(D3-D1)/2。
进一步地，阀体组件包括相互连接的套管和阀体部，套管部分穿入安装孔内，硬密封件为环形凸台，环形凸台位于安装孔的内壁和套管的外壁之间，环形凸台设置在安装孔朝向阀 体部一端的内壁上并和套管的外壁密封配合，或，环形凸台设置在套管朝向阀体部一侧的外壁上并和安装孔的内壁密封配合。
进一步地，线圈组件包括塑封壳体和设置在塑封壳体内的线圈部，塑封壳体具有安装孔，硬密封件和塑封壳体为一体结构。
进一步地，线圈组件包括塑封壳体和线圈部，塑封壳体包括相互连接的注塑壳和环形件，线圈部位于注塑壳的腔体内，注塑壳具有第一通孔，环形件具有第二通孔，第一通孔和第二通孔组成安装孔，硬密封件设置在第二通孔的内壁上，硬密封件和环形件为一体结构。
进一步地，注塑壳朝向环形件的一端具有围绕安装孔设置的第一安装槽，环形件包括第一环形板和设置在第一环形板上的第二环形板，第二环形板的外径小于第一环形板的外径，第二环形板位于第一安装槽内，第一环形板和注塑壳抵接；塑封壳体还包括设置在注塑壳上的第一限位结构，环形件还包括设置在第一环形板上的第二限位结构，第一限位结构和第二限位结构限位配合。
进一步地，第一限位结构包括设置在注塑壳上的第一定位凸起和第一定位槽；第二限位结构位于第一环形板朝向第二环形板的一侧，第二限位结构包括设置在第一环形板上的第二定位凸起和第二定位槽；其中，第二定位凸起设置在第一定位槽内，第一定位凸起设置在第二定位槽内。
进一步地，线圈组件包括注塑壳，注塑壳具有第一通孔和围绕第一通孔设置的第一安装槽，第一通孔和第一安装槽组成安装孔，阀体组件包括相互连接的套管和阀体部，套管部分穿过第一安装槽并穿设在第一通孔内，硬密封件套设在套管的外壁上，或，硬密封件和套管为一体结构，硬密封件和第一安装槽的内壁密封配合。
进一步地，电子膨胀阀还包括防护罩，防护罩和线圈组件连接，防护罩包括封堵头，封堵头封堵安装孔的一个开口。
进一步地，线圈组件包括塑封壳体和设置在塑封壳体内的线圈部，塑封壳体具有围绕安装孔设置的第二安装槽，防护罩还包括围绕封堵头设置的环形限位板，封堵头的一端插入第二安装槽，环形限位板和塑封壳体抵接；线圈组件还包括设置在塑封壳体上的第三限位结构，防护罩还包括设置在环形限位板上的第四限位结构，第三限位结构和第四限位结构限位配合。
进一步地，线圈组件包括塑封壳体和设置在塑封壳体内的线圈部，防护罩和塑封壳体为一体结构。
进一步地，防护罩为一体结构，防护罩还包括和封堵头连接的防护套，防护套具有第一容纳腔，线圈组件设置在第一容纳腔内，封堵头具有第二容纳腔，第二容纳腔和安装孔连通。
应用本申请的技术方案，提供了一种电子膨胀阀，包括：线圈组件，线圈组件具有安装孔；阀体组件，阀体组件部分穿入安装孔内；硬密封件，硬密封件设置在安装孔的内壁和阀体组件的外壁之间的间隙内，硬密封件和阀体组件、安装孔均密封配合。采用该方案，通过 硬密封件别对线圈组件的安装孔的一端进行封堵，避免在电子膨胀阀的工作过程中有杂物从安装孔的一端进入线圈组件导致线圈组件失效的情况，保证电子膨胀阀的可靠性。进一步地，本方案采用阀体组件和环形凸台直接密封配合的硬密封配合，相对于现有技术中采用软密封件对阀体组件和安装孔之间的间隙进行密封的方式，本方案避免了由于软密封不耐高温、易磨损等问题导致密封失效，进而导致电子膨胀阀失效的情况，保证阀体组件和线圈组件之间的密封性，提高电子膨胀阀的可靠性。
附图说明
构成本申请的一部分的说明书附图用来提供对本申请的进一步理解，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1示出了本申请的实施例一提供的电子膨胀阀的结构示意图；
图2示出了图1中A位置的放大图；
图3示出了图1中线圈组件、防护罩和环形凸台的结构示意图；
图4示出了图3中C位置的放大图；
图5示出了本实用新型的实施例二提供的线圈组件、防护罩和环形凸台的结构示意图；
图6示出了图5中B位置的放大图；
图7示出了图5中环形件的结构示意图；
图8示出了本实用新型的实施例三提供的电子膨胀阀的结构示意图；
图9示出了图8中D位置的放大图；
图10示出了本实用新型的实施例四提供的线圈组件、防护罩和环形凸台的结构示意图；
图11示出了本实用新型的实施例五提供的线圈组件、防护罩和环形凸台的结构示意图。
其中，上述附图包括以下附图标记：
10、线圈组件；11、安装孔；12、塑封壳体；121、注塑壳；122、环形件；1221、第一环形板；1222、第二环形板；1223、第二限位结构；12231、第二定位凸起；12232、第二定位槽；123、第一限位结构；13、线圈部；14、第三限位结构；
20、防护罩；21、封堵头；22、环形限位板；23、第四限位结构；24、防护套；
30、硬密封件；31、第一倒角；32、第二倒角；
40、阀体组件；41、套管；42、阀体部。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本申请及其应用或使用的任何限制。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
如图1至图4所示，本申请的实施例一提供了一种电子膨胀阀，包括：线圈组件10，线圈组件10具有安装孔11；阀体组件40，阀体组件40部分穿入安装孔11内；硬密封件30，硬密封件30设置在安装孔11的内壁和阀体组件40的外壁之间的间隙内，硬密封件30和阀体组件40、安装孔11均密封配合。
在本实施例中，通过硬密封件30对线圈组件10的安装孔11的一端进行封堵，避免在电子膨胀阀的工作过程中有杂物从安装孔11一端进入线圈组件10导致线圈组件10失效的情况，保证电子膨胀阀的可靠性。进一步地，本方案采用阀体组件40和硬密封件30直接密封配合的硬密封配合，相对于现有技术中采用软密封件对阀体组件和安装孔之间的间隙进行密封的方式，本方案避免了由于软密封不耐高温、易磨损等问题导致密封失效，进而导致电子膨胀阀失效的情况，保证阀体组件40和线圈组件10之间的密封性，提高电子膨胀阀的可靠性。
如图2所示，硬密封件30设置在安装孔11的内壁上，硬密封件30的径向尺寸为D1，安装孔11的径向尺寸为D3，D3-D1＜0.2mm。在本实施例中，对D1和D3的尺寸进行限定，在保证硬密封件30和阀体组件40之间密封的稳定性的同时，保证了线圈组件10和阀体组件40装配的可靠性，避免D1和D3相近或D3小于D1时线圈组件10和阀体组件40由于干涉或精度的影响导致不易装配的情况，保证电子膨胀阀的可靠性。
具体地，硬密封件30的径向尺寸为D1，阀体组件40与硬密封件30密封配合的部分的外径为D2，D2≤D1。在本实施例中，对D1和D2的尺寸进行限定，进一步保证了硬密封件30和阀体组件40之间密封的稳定性以及线圈组件10和阀体组件40装配的可靠性。具体地，在D2＝D1时，硬密封件30和阀体组件40之间的密封效果最佳。
进一步地，在安装孔11的轴线方向上，硬密封件30朝向线圈组件10的一侧具有第一倒角31，硬密封件30朝向阀体组件40的一侧具有第二倒角32，其中，第一倒角31在硬密封件30的径向宽度为L1，L1＜(D3-D1)/2。在本实施例中，通过对第一倒角31的尺寸进行限定，保证硬密封件30和阀体组件40之间的密封效果的同时，提高了硬密封件30的结构强度，保证硬密封件30密封的可靠性和稳定性。
具体地，阀体组件40包括相互连接的套管41和阀体部42，套管41部分穿入安装孔11内，硬密封件30为环形凸台，环形凸台位于安装孔11的内壁和套管41的外壁之间，环形凸台设置在安装孔11朝向阀体部42一端的内壁上并和套管41的外壁密封配合，或，环形凸台设置在套管41朝向阀体部42一侧的外壁上并和安装孔11的内壁密封配合。这样设置，便于环形凸台的加工和设置，便于环形凸台对套管41和线圈组件10之间间隙的密封。
可选地，环形凸台还可以设置在套管41的外周面上并和套管41一体设置，或，在其他结构的电子膨胀阀中，环形凸台还可以设置在阀体部42的外周面上并和阀体部42一体设置。
如图3和图4所示，线圈组件10包括塑封壳体12和设置在塑封壳体12内的线圈部13，塑封壳体12具有安装孔11，硬密封件30和塑封壳体12为一体结构。这样设置，便于硬密封件30的加工。
具体地，电子膨胀阀还包括防护罩20，防护罩20和线圈组件10连接，防护罩20包括封堵头21，封堵头21封堵安装孔11的一个开口。
在本实施例中，通过设置防护罩20，避免了从线圈组件10上部开口流入的水渍沿着套管41与安装孔11之间的间隙流入线圈部13中，或流体从线圈组件10上部开口直接进入线圈部13中，从而造成线圈定子外壳和定子极板锈蚀，最终导致产品失效的情况，保证了电子膨胀阀的可靠性。
如图3所示，线圈组件10包括塑封壳体12和设置在塑封壳体12内的线圈部13，塑封壳体12具有围绕安装孔11设置的第二安装槽，防护罩20还包括围绕封堵头21设置的环形限位板22，封堵头21的一端插入第二安装槽，环形限位板22和塑封壳体12抵接；线圈组件10还包括设置在塑封壳体12上的第三限位结构14，防护罩20还包括设置在环形限位板22上的第四限位结构23，第三限位结构14和第四限位结构23限位配合。
在本实施例中，通过封堵头21插入第二安装槽内并和第二安装槽限位配合，以便于防护罩20的安装定位，防护罩20和塑封壳体12通过第三限位结构14和第四限位结构23限位配合，进一步提高了防护罩20和塑封壳体12的定位精度，保证防护罩20和塑封壳体12安装的可靠性和连接的稳定性。
具体地，如图3所示，第三限位结构14包括设置在塑封壳体12上的第三定位凸起和第三定位槽，第四限位结构23包括设置在环形限位板22上的第四定位凸起和第四定位槽，第三定位凸起和第四定位凸起均为环形凸起，第三定位槽和第四定位槽均为环形槽，第三定位凸起设置在第四定位槽内并和第四定位槽限位配合，第四定位凸起设置在第三定位槽内并和第三定位槽限位配合。其中，第三定位凸起为两个，第三定位槽设置在两个第三定位凸起之间，第四定位槽为两个，第四定位凸起设置在两个第四定位槽之间；或第三定位槽为两个，第三定位凸起设置在两个第三定位槽之间，第四定位凸起为两个，第四定位槽设置在两个第四定位凸起之间。这样设置，便于实现防护罩20和塑封壳体12的定位连接，保证塑封壳体12和防护罩20连接的可靠性和稳定性。
可选地，第三定位凸起、第四定位凸起、第三定位槽、第四定位槽的数量可根据实际情况进行调整。
如图5至图7所示，本实用新型的实施例二提供了一种电子膨胀阀，与上述实施例不同之处在于，线圈组件10包括塑封壳体12和线圈部13，塑封壳体12包括相互连接的注塑壳121和环形件122，线圈部13位于注塑壳121的腔体内，注塑壳121具有第一通孔，环形件 122具有第二通孔，第一通孔和第二通孔组成安装孔11，硬密封件30设置在第二通孔的内壁上，硬密封件30和环形件122为一体结构。这样设置，硬密封件30和环形件122一体加工成型，便于对硬密封件30的加工。具体地，注塑壳121和环形件122分体设置，环形件122和注塑壳121焊接连接。
具体地，注塑壳121朝向环形件122的一端具有围绕安装孔11设置的第一安装槽，环形件122包括第一环形板1221和设置在第一环形板1221上的第二环形板1222，第二环形板1222的外径小于第一环形板1221的外径，第二环形板1222位于第一安装槽内，第一环形板1221和注塑壳121抵接；塑封壳体12还包括设置在注塑壳121上的第一限位结构123，环形件122还包括设置在第一环形板1221上的第二限位结构1223，第一限位结构123和第二限位结构1223限位配合。
在本实施例中，环形件122的第二环形板1222设置在第一安装槽内并和第一安装槽限位配合，以便于环形件122的安装定位，第一环形板1221和注塑壳121通过第一限位结构123和第二限位结构1223抵接并限位配合，进一步提高了环形件122定位精度，保证环形件122和注塑壳121安装的可靠性和连接的稳定性。
可选地，注塑壳121和第一限位结构123为一体，环形件122和第二限位结构1223为一体。注塑壳121和环形件122通过焊接工艺连接。
进一步地，第一限位结构123包括设置在注塑壳121上的第一定位凸起和第一定位槽；第二限位结构1223位于第一环形板1221朝向第二环形板1222的一侧，第二限位结构1223包括设置在第一环形板1221上的第二定位凸起12231和第二定位槽12232；其中，第二定位凸起12231设置在第一定位槽内，第一定位凸起设置在第二定位槽12232内。这样设置，通过定位凸起和定位槽的限位配合完成对注塑壳121和第一环形板1221的定位，提高安装的精度和定位的可靠性。具体地，如图3所示，本实施例中的第一定位凸起和第二定位凸起12231均为环形凸起，第一定位槽和第二定位槽12232均为环形槽，第一定位槽和第二定位凸起12231均为两个，第一定位凸起设置在两个第一定位槽之间，第二定位槽12232设置在两个第二定位凸起12231之间，进一步保证注塑壳121和第一环形板1221连接的可靠性和稳定性。
可选地，第一定位凸起、第二定位凸起12231、第一定位槽和第二定位槽12232的数量可根据实际情况进行调整。
如图8和图9所示，本实用新型的实施例三提供了一种电子膨胀阀，与上述实施例不同之处在于，线圈组件10包括注塑壳121，注塑壳121具有第一通孔和围绕第一通孔设置的第一安装槽，第一通孔和第一安装槽组成安装孔11，阀体组件40包括相互连接的套管41和阀体部42，套管41部分穿过第一安装槽并穿设在第一通孔内，硬密封件30套设在套管41的外壁上，或，硬密封件30和套管41为一体结构，硬密封件30和第一安装槽的内壁密封配合。这样设置，硬密封件30和套管41可一体加工设置，便于对硬密封件30的快速加工，或，硬密封件30和套管41可分体加工并固定连接，便于同时保证硬密封件30和套管41的结构强 度，硬密封件30设置在第一安装槽内并和第一安装槽密封配合，保证了硬密封件30对安装孔11和套管41之间间隙的密封效果，保证密封的可靠性。
如图10所示，本实用新型的实施例四提供了一种电子膨胀阀，与上述实施例不同之处在于，线圈组件10包括塑封壳体12和设置在塑封壳体12内的线圈部13，防护罩20和塑封壳体12为一体结构。这样设置，便于对防护罩20的加工。
如图11所示，本实用新型的实施例五提供了一种电子膨胀阀，与上述实施例不同之处在于，防护罩20为一体结构，防护罩20还包括和封堵头21连接的防护套24，防护套24具有第一容纳腔，线圈组件10设置在第一容纳腔内，封堵头21具有第二容纳腔，第二容纳腔和安装孔11连通。这样设置，通过防护罩20实现对线圈组件10整体的保护，提高了线圈组件10的可靠性，保证电子膨胀阀的性能。
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (14)

  1. 一种电子膨胀阀，其特征在于，包括：
    线圈组件(10)，所述线圈组件(10)具有安装孔(11)；
    阀体组件(40)，所述阀体组件(40)部分穿入所述安装孔(11)内；
    硬密封件(30)，所述硬密封件(30)设置在所述安装孔(11)的内壁和所述阀体组件(40)的外壁之间的间隙内，所述硬密封件(30)和所述阀体组件(40)、所述安装孔(11)均密封配合。
  2. 根据权利要求1所述的电子膨胀阀，其特征在于，所述硬密封件(30)设置在所述安装孔(11)的内壁上，所述硬密封件(30)的径向尺寸为D1，所述安装孔(11)的径向尺寸为D3，D3-D1＜0.2mm。
  3. 根据权利要求2所述的电子膨胀阀，其特征在于，所述硬密封件(30)的径向尺寸为D1，所述阀体组件(40)与所述硬密封件(30)密封配合的部分的外径为D2，D2≤D1。
  4. 根据权利要求2所述的电子膨胀阀，其特征在于，在所述安装孔(11)的轴线方向上，所述硬密封件(30)朝向所述线圈组件(10)的一侧具有第一倒角(31)，所述硬密封件(30)朝向所述阀体组件(40)的一侧具有第二倒角(32)，其中，所述第一倒角(31)在所述硬密封件(30)的径向宽度为L1，L1＜(D3-D1)/2。
  5. 根据权利要求1所述的电子膨胀阀，其特征在于，所述阀体组件(40)包括相互连接的套管(41)和阀体部(42)，所述套管(41)部分穿入所述安装孔(11)内，所述硬密封件(30)为环形凸台，所述环形凸台位于所述安装孔(11)的内壁和所述套管(41)的外壁之间，所述环形凸台设置在所述安装孔(11)朝向所述阀体部(42)一端的内壁上并和所述套管(41)的外壁密封配合，或，所述环形凸台设置在所述套管(41)朝向所述阀体部(42)一侧的外壁上并和所述安装孔(11)的内壁密封配合。
  6. 根据权利要求1所述的电子膨胀阀，其特征在于，所述线圈组件(10)包括塑封壳体(12)和设置在所述塑封壳体(12)内的线圈部(13)，所述塑封壳体(12)具有所述安装孔(11)，所述硬密封件(30)和所述塑封壳体(12)为一体结构。
  7. 根据权利要求1所述的电子膨胀阀，其特征在于，所述线圈组件(10)包括塑封壳体(12)和线圈部(13)，所述塑封壳体(12)包括相互连接的注塑壳(121)和环形件(122)，所述线圈部(13)位于所述注塑壳(121)的腔体内，所述注塑壳(121)具有第一通孔，所述环形件(122)具有第二通孔，所述第一通孔和所述第二通孔组成所述安装孔(11)，所述硬密封件(30)设置在所述第二通孔的内壁上，所述硬密封件(30)和所述环形件(122)为一体结构。
  8. 根据权利要求7所述的电子膨胀阀，其特征在于，所述注塑壳(121)朝向所述环形件(122)的一端具有围绕所述安装孔(11)设置的第一安装槽，所述环形件(122)包括第一环形板(1221)和设置在所述第一环形板(1221)上的第二环形板(1222)，所述第二环形板 (1222)的外径小于所述第一环形板(1221)的外径，所述第二环形板(1222)位于所述第一安装槽内，所述第一环形板(1221)和所述注塑壳(121)抵接；所述塑封壳体(12)还包括设置在所述注塑壳(121)上的第一限位结构(123)，所述环形件(122)还包括设置在所述第一环形板(1221)上的第二限位结构(1223)，所述第一限位结构(123)和所述第二限位结构(1223)限位配合。
  9. 根据权利要求8所述的电子膨胀阀，其特征在于，所述第一限位结构(123)包括设置在所述注塑壳(121)上的第一定位凸起和第一定位槽；所述第二限位结构(1223)位于所述第一环形板(1221)朝向所述第二环形板(1222)的一侧，所述第二限位结构(1223)包括设置在所述第一环形板(1221)上的第二定位凸起(12231)和第二定位槽(12232)；其中，所述第二定位凸起(12231)设置在所述第一定位槽内，所述第一定位凸起设置在所述第二定位槽(12232)内。
  10. 根据权利要求1所述的电子膨胀阀，其特征在于，所述线圈组件(10)包括注塑壳(121)，所述注塑壳(121)具有第一通孔和围绕所述第一通孔设置的第一安装槽，所述第一通孔和所述第一安装槽组成所述安装孔(11)，所述阀体组件(40)包括相互连接的套管(41)和阀体部(42)，所述套管(41)部分穿过所述第一安装槽并穿设在所述第一通孔内，所述硬密封件(30)套设在所述套管(41)的外壁上，或，所述硬密封件(30)和所述套管(41)为一体结构，所述硬密封件(30)和所述第一安装槽的内壁密封配合。
  11. 根据权利要求1所述的电子膨胀阀，其特征在于，所述电子膨胀阀还包括防护罩(20)，所述防护罩(20)和所述线圈组件(10)连接，所述防护罩(20)包括封堵头(21)，所述封堵头(21)封堵所述安装孔(11)的一个开口。
  12. 根据权利要求11所述的电子膨胀阀，其特征在于，所述线圈组件(10)包括塑封壳体(12)和设置在所述塑封壳体(12)内的线圈部(13)，所述塑封壳体(12)具有围绕所述安装孔(11)设置的第二安装槽，所述防护罩(20)还包括围绕所述封堵头(21)设置的环形限位板(22)，所述封堵头(21)的一端插入所述第二安装槽，所述环形限位板(22)和所述塑封壳体(12)抵接；所述线圈组件(10)还包括设置在所述塑封壳体(12)上的第三限位结构(14)，所述防护罩(20)还包括设置在所述环形限位板(22)上的第四限位结构(23)，所述第三限位结构(14)和所述第四限位结构(23)限位配合。
  13. 根据权利要求11所述的电子膨胀阀，其特征在于，所述线圈组件(10)包括塑封壳体(12)和设置在所述塑封壳体(12)内的线圈部(13)，所述防护罩(20)和所述塑封壳体(12)为一体结构。
  14. 根据权利要求11所述的电子膨胀阀，其特征在于，所述防护罩(20)为一体结构，所述防护罩(20)还包括和所述封堵头(21)连接的防护套(24)，所述防护套(24)具有第一容纳腔，所述线圈组件(10)设置在所述第一容纳腔内，所述封堵头(21)具有第二容纳腔，所述第二容纳腔和所述安装孔(11)连通。
PCT/CN2023/075055 2022-06-06 2023-02-08 电子膨胀阀 WO2023236568A1 (zh)

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US3972505A (en) * 1975-04-04 1976-08-03 Skinner Precision Industries, Inc. Control valve
JP2001343085A (ja) * 2000-03-31 2001-12-14 Saginomiya Seisakusho Inc 電動弁用防水コイル
CN110701356A (zh) * 2018-07-09 2020-01-17 浙江三花智能控制股份有限公司 电子膨胀阀
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