WO2021253985A1 - 电子膨胀阀 - Google Patents

电子膨胀阀 Download PDF

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Publication number
WO2021253985A1
WO2021253985A1 PCT/CN2021/089391 CN2021089391W WO2021253985A1 WO 2021253985 A1 WO2021253985 A1 WO 2021253985A1 CN 2021089391 W CN2021089391 W CN 2021089391W WO 2021253985 A1 WO2021253985 A1 WO 2021253985A1
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Prior art keywords
limiting
magnetic rotor
expansion valve
electronic expansion
matching hole
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PCT/CN2021/089391
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English (en)
French (fr)
Inventor
詹少军
徐冠军
陈勇好
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浙江盾安人工环境股份有限公司
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Publication of WO2021253985A1 publication Critical patent/WO2021253985A1/zh

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    • 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
    • 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

Definitions

  • This application relates to the technical field of electronic expansion valves, and in particular to an electronic expansion valve.
  • the connecting parts matched with the magnetic rotor and the screw in the existing electronic expansion valve are usually of powder metallurgy structure, and the cost of such a process is relatively high.
  • the welding position of the connector is black when welding with other parts, the welding strength is insufficient, and the welding quality is difficult to identify. Therefore, it is necessary to optimize the electronic expansion valve to reduce costs and improve quality.
  • This application provides an electronic expansion valve to reduce the manufacturing cost of the electronic expansion valve.
  • an electronic expansion valve which includes: a magnetic rotor;
  • the connecting member is an injection molding structure; a limiting member, the limiting member and the connecting member in a limiting fit, the limiting member has a second matching hole, the second matching hole and the first matching hole Correspondingly provided; a screw, the screw passes through the first matching hole, and the screw is fixedly connected to the inner wall of the second matching hole; the guide shaft is fixedly arranged on the inner wall of the magnetic rotor, the The guide shaft extends in the magnetic rotor along the axial direction of the magnetic rotor.
  • the guide shaft and the magnetic rotor are an integral structure.
  • the connecting member includes a plate body and a boss provided on the plate body, the first matching hole is located on the plate body, and the boss is in position-limiting fit with the limiting member.
  • the boss has a limiting groove, at least a part of the limiting member is disposed in the limiting groove, and the outer circumferential surface of the limiting member is in a limiting fit with the inner circumferential surface of the limiting groove .
  • the outer peripheral surface of the limiting member is composed of a plurality of planes and/or arc surfaces, and the shape of the inner peripheral surface of the limiting groove matches the shape of the outer peripheral surface of the limiting member.
  • the limiting member and the limiting groove are interference fit.
  • the screw passes through the second matching hole, and the outer wall of the screw is welded to the inner wall of the second matching hole.
  • the connecting member is made of polyether plastic.
  • the limiting member is a flat plate stamping and forming structure.
  • the outer peripheral surface of the connecting piece is composed of a plurality of planes and/or arc surfaces
  • the inner wall of the magnetic rotor has an annular groove
  • the peripheral edge of the connecting piece is arranged in the annular groove
  • the The annular bottom wall of the annular groove matches the shape of the outer peripheral surface of the connecting piece.
  • the electronic expansion valve includes a magnetic rotor, a connecting piece, a limiting piece, a screw and a guide shaft, wherein at least a part of the connecting piece is fixedly arranged in the magnetic rotor and connected
  • the connecting piece has a first mating hole, and the connecting piece is of an injection molding structure; the limiting piece and the connecting piece are in a limiting fit; the limiting piece has a second matching hole, and the second matching hole is set corresponding to the first matching hole; the screw passes through the first
  • the screw is fixedly connected to the inner wall of the second matching hole;
  • the guide shaft is fixedly arranged on the inner wall of the magnetic rotor, and the guide shaft extends in the magnetic rotor along the axial direction of the magnetic rotor.
  • the connecting piece is an injection molding structure, and the connecting piece and the limiting piece are matched in position.
  • the manufacturing cost of a single part can be reduced, and the connecting piece and the limiting piece No welding is required, which can reduce assembly costs.
  • the guide shaft is fixedly arranged on the inner wall of the magnetic rotor, which is convenient for processing and assembly.
  • Figure 1 shows a schematic structural diagram of an electronic expansion valve provided by an embodiment of the present application
  • Figure 2 shows another view of the electronic expansion valve in Figure 1;
  • FIG. 3 shows a schematic diagram of part of the structure in FIG. 1;
  • Figure 4 shows a schematic diagram of the connector in Figure 1;
  • FIG. 5 shows a schematic diagram of the structure of the limiting member in FIG. 1.
  • Magnetic rotor 20. Connector; 21. First matching hole; 22. Plate body; 23. Boss; 24. Limit slot; 25. Process hole; 30. Limit part; 31. Second matching hole ; 40, screw; 50, guide shaft.
  • the embodiment of the present application provides an electronic expansion valve, including: a magnetic rotor 10; a connecting piece 20, at least a part of the connecting piece 20 is fixedly arranged in the magnetic rotor 10, and the connecting piece 20 has a first fit Hole 21, the connecting member 20 is an injection molding structure; the limiting member 30, the limiting member 30 and the connecting member 20 are in position-limiting cooperation, the limiting member 30 has a second matching hole 31, the second matching hole 31 and the first matching hole 21 Corresponding arrangement; screw 40, screw 40 passes through the first matching hole 21, and the screw 40 is fixedly connected to the inner wall of the second matching hole 31; the guide shaft 50 is fixedly arranged on the inner wall of the magnetic rotor 10, the guide shaft 50 is along the The axial direction of the magnetic rotor 10 extends inside the magnetic rotor 10.
  • the electronic expansion valve includes a magnetic rotor 10, a connecting piece 20, a limiting piece 30, a screw 40 and a guide shaft 50, wherein at least a part of the connecting piece 20 is fixedly arranged
  • the connecting piece 20 has a first mating hole 21, and the connecting piece 20 is an injection molding structure
  • the hole 31 is arranged corresponding to the first matching hole 21
  • the screw 40 passes through the first matching hole 21, and the screw 40 is fixedly connected to the inner wall of the second matching hole 31
  • the guide shaft 50 is fixedly arranged on the inner wall of the magnetic rotor 10, and the guide
  • the moving shaft 50 extends in the magnetic rotor 10 along the axial direction of the magnetic rotor 10.
  • the connecting piece 20 is an injection molding structure, and the connecting piece 20 and the limiting piece 30 are in position-limiting cooperation.
  • the manufacturing cost of a single part can be reduced, and the connecting piece There is no need to weld the 20 and the limit piece 30, which can reduce the assembly cost.
  • Fixing the guide shaft 50 on the inner wall of the magnetic rotor 10 can facilitate processing and assembly.
  • the guide shaft 50 and the magnetic rotor 10 are an integral structure. Setting the guide shaft 50 and the magnetic rotor 10 as an integral structure can reduce the number of parts, facilitate manufacturing and assembly, and help reduce costs.
  • the connecting member 20 includes a plate body 22 and a boss 23 provided on the plate body 22.
  • the first matching hole 21 is located on the plate body 22, and the boss 23 is in position-limiting cooperation with the limiting member 30.
  • the above arrangement can facilitate the cooperation between the boss 23 and the limiting member 30.
  • process holes 25 on the board, so that the amount of material can be reduced.
  • the peripheral edge of the lower end of the first mating hole 21 is chamfered to facilitate penetration of the screw 40.
  • the plate body 22 has a third matching hole, the third matching hole communicates with the first matching hole 21, the diameter of the third matching hole is larger than the diameter of the first matching hole 21, and the third matching hole is located in the first matching hole. Between 21 and the limit piece 30. Solder can be placed in the third matching hole to facilitate the welding of the screw 40 and the limiting member 30.
  • the boss 23 has a limiting groove 24, at least a part of the limiting member 30 is disposed in the limiting groove 24, and the outer circumferential surface of the limiting member 30 is in a limiting fit with the inner circumferential surface of the limiting groove 24.
  • the limit member 30 and the connecting member 20 can be limited in the circumferential direction.
  • the limiting member 30 and the limiting groove 24 are interference fit to improve the connection strength.
  • the limiting member 30 can be assembled into the limiting groove 24 by pressing, so that the process is simple, the operation is convenient, and the production cost is low.
  • the outer circumferential surface of the limiting member 30 is composed of multiple flat surfaces and/or arc surfaces, and the shape of the inner circumferential surface of the limiting groove 24 matches the shape of the outer circumferential surface of the limiting member 30.
  • the limiting member 30 and the limiting slot 24 are interference fit. This can increase the strength of the connection between the two.
  • the limiting member 30 may be press-fitted in the limiting groove 24.
  • the screw 40 passes through the second matching hole 31, and the outer wall of the screw 40 is welded to the inner wall of the second matching hole 31.
  • the screw 40 and the limiting member 30 can be reliably fixed. In this way, there is no need to fix the screw 40 and the connecting piece 20, and there is no need to weld the limit piece 30 and the connecting piece 20, so that the three can be reliably fixed and easy to assemble.
  • the screw 40 includes a first rod section and a second rod section that are connected to each other, the diameter of the first rod section is smaller than the diameter of the second rod section, and the first rod section passes through the first matching hole 21 and the second matching hole. 31.
  • the step between the first rod section and the second rod section abuts the connecting piece 20 to realize the axial limit and positioning of the two.
  • the connecting member 20 is made of polyether plastic. Using this material has high strength and low cost.
  • the limiting member 30 is a flat plate stamping and forming structure.
  • the limit piece 30 is formed by stamping from a flat plate, which is easy to process, high in efficiency and low in cost.
  • the outer peripheral surface of the connecting member 20 is composed of a plurality of planes and/or arc surfaces
  • the inner wall of the magnetic rotor 10 has an annular groove
  • the peripheral edge of the connecting member 20 is arranged in the annular groove.
  • the annular bottom wall matches the shape of the outer peripheral surface of the connecting member 20.
  • the electronic expansion valve provided in the present application includes a magnetic rotor 10, a connecting member 20, a limiting member 30, a screw 40 and a guide shaft 50, wherein at least a part of the connecting member 20 is fixedly arranged in the magnetic rotor 10, and the connecting member 20 has a first A matching hole 21, the connecting member 20 is an injection molding structure; the limiting member 30 is in a limiting fit with the connecting member 20, the limiting member 30 has a second matching hole 31, and the second matching hole 31 is arranged corresponding to the first matching hole 21;
  • the screw 40 passes through the first matching hole 21, and the screw 40 is fixedly connected to the inner wall of the second matching hole 31;
  • the guide shaft 50 is fixedly arranged on the inner wall of the magnetic rotor 10, and the guide shaft 50 is located along the axial direction of the magnetic rotor 10.
  • the magnetic rotor 10 extends inside.
  • the connecting piece 20 is an injection molding structure, and the connecting piece 20 and the limiting piece 30 are in position-limiting cooperation.
  • the manufacturing cost of a single part can be reduced, and the connecting piece There is no need to weld the 20 and the limit piece 30, which can reduce the assembly cost.
  • Fixing the guide shaft 50 on the inner wall of the magnetic rotor 10 can facilitate processing and assembly.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

一种电子膨胀阀，包括磁转子（10）、连接件（20）、限位件（30）、螺杆（40）和导动轴（50），其中，连接件（20）固定设置在磁转子（10）内，连接件（20）具有第一配合孔（21），连接件（20）为注塑成型结构；限位件（30）与连接件（20）限位配合，限位件（30）具有第二配合孔（31），第二配合孔（31）与第一配合孔（21）对应设置；螺杆（40）穿过第一配合孔（21），且螺杆（40）与第二配合孔（31）的内壁固定连接；导动轴（50）固定设置在磁转子（10）的内壁上，导动轴（50）沿磁转子（10）的轴向在磁转子（10）内延伸。

Description

电子膨胀阀 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
现有的电子膨胀阀中的与磁转子和螺杆配合的连接件通常为粉末冶金结构，此种工艺成本较高。并且，因粉末冶金材料特性原因，连接件在与其他零件焊接时焊接位置发黑，焊接强度不足，焊接质量难识别。因此有必要对电子膨胀阀进行优化，以降低成本，提高质量。
申请内容
本申请提供了一种电子膨胀阀，以降低电子膨胀阀的制造成本。
为了实现上述目的，本申请提供了一种电子膨胀阀，包括：磁转子；连接件，所述连接件的至少一部分固定设置在所述磁转子内，所述连接件具有第一配合孔，所述连接件为注塑成型结构；限位件，所述限位件与所述连接件限位配合，所述限位件具有第二配合孔，所述第二配合孔与所述第一配合孔对应设置；螺杆，所述螺杆穿过所述第一配合孔，且所述螺杆与所述第二配合孔的内壁固定连接；导动轴，固定设置在所述磁转子的内壁上，所述导动轴沿所述磁转子的轴向在所述磁转子内延伸。
进一步地，所述导动轴和所述磁转子为一体结构。
进一步地，所述连接件包括板体和设置在所述板体上的凸台，所述第一配合孔位于所述板体上，所述凸台与所述限位件限位配合。
进一步地，所述凸台具有限位槽，所述限位件的至少一部分设置在所述限位槽内，所述限位件的外周面与所述限位槽的内周面限位配合。
进一步地，所述限位件的外周面由多个平面和/或弧面组成，所述限位槽的内周面的形状与所述限位件的外周面的形状匹配。
进一步地，所述限位件与所述限位槽过盈配合。
进一步地，所述螺杆穿过所述第二配合孔，所述螺杆的外壁与所述第二配合孔的内壁焊接。
进一步地，所述连接件由聚醚类塑料制成。
进一步地，所述限位件为平板冲压成型结构。
进一步地，所述连接件的外周面由多个平面和/或弧面组成，所述磁转子的内壁上具有环形凹槽，所述连接件的周缘设置在所述环形凹槽内，所述环形凹槽的环形底壁与所述连接件的外周面的形状匹配。
应用本申请的技术方案，提供了一种电子膨胀阀，电子膨胀阀包括磁转子、连接件、限位件、螺杆和导动轴，其中，连接件的至少一部分固定设置在磁转子内，连接件具有第一配合孔，连接件为注塑成型结构；限位件与连接件限位配合，限位件具有第二配合孔，第二配合孔与第一配合孔对应设置；螺杆穿过第一配合孔，且螺杆与第二配合孔的内壁固定连接；导动轴固定设置在磁转子的内壁上，导动轴沿磁转子的轴向在磁转子内延伸。采用该方案，连接件为注塑成型结构，并且连接件与限位件限位配合，与现有的粉末冶金结构的连接件相比，可以降低单个零件的制造成本，并且连接件与限位件无需焊接，可以降低装配成本。将导动轴固定设置在磁转子的内壁上，可便于加工和装配。
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提供的电子膨胀阀的结构示意图；
图2示出了图1中的电子膨胀阀的另一视图；
图3示出了图1中的部分结构的示意图；
图4示出了图1中的连接件的示意图；
图5示出了图1中的限位件的结构示意图。
其中，上述附图包括以下附图标记：
10、磁转子；20、连接件；21、第一配合孔；22、板体；23、凸台；24、限位槽；25、工艺孔；30、限位件；31、第二配合孔；40、螺杆；50、导动轴。
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。
如附图所示，本申请的实施例提供了一种电子膨胀阀，包括：磁转子10；连接件20，连接件20的至少一部分固定设置在磁转子10内，连接件20具有第一配合孔21，连接件20为注塑成型结构；限位件30，限位件30与连接件20限位配合，限位件30具有第二配合孔31， 第二配合孔31与第一配合孔21对应设置；螺杆40，螺杆40穿过第一配合孔21，且螺杆40与第二配合孔31的内壁固定连接；导动轴50，固定设置在磁转子10的内壁上，导动轴50沿磁转子10的轴向在磁转子10内延伸。
应用本申请的技术方案，提供了一种电子膨胀阀，电子膨胀阀包括磁转子10、连接件20、限位件30、螺杆40和导动轴50，其中，连接件20的至少一部分固定设置在磁转子10内，连接件20具有第一配合孔21，连接件20为注塑成型结构；限位件30与连接件20限位配合，限位件30具有第二配合孔31，第二配合孔31与第一配合孔21对应设置；螺杆40穿过第一配合孔21，且螺杆40与第二配合孔31的内壁固定连接；导动轴50固定设置在磁转子10的内壁上，导动轴50沿磁转子10的轴向在磁转子10内延伸。采用该方案，连接件20为注塑成型结构，并且连接件20与限位件30限位配合，与现有的粉末冶金结构的连接件20相比，可以降低单个零件的制造成本，并且连接件20与限位件30无需焊接，可以降低装配成本。将导动轴50固定设置在磁转子10的内壁上，可便于加工和装配。
在本实施例中，导动轴50和磁转子10为一体结构。将导动轴50和磁转子10设置为一体结构，可以减少零件数量，便于制造和装配，有利于降低成本。
在本实施例中，连接件20包括板体22和设置在板体22上的凸台23，第一配合孔21位于板体22上，凸台23与限位件30限位配合。通过上述设置可便于凸台23与限位件30的配合。
可选地，板体上具有工艺孔25，这样可以减少材料用量。第一配合孔21的下端的周缘具有倒角，以便于穿入螺杆40。
可选地，板体22上具有第三配合孔，第三配合孔与第一配合孔21连通，第三配合孔的直径大于第一配合孔21的直径，第三配合孔位于第一配合孔21和限位件30之间。第三配合孔中可放置焊料以便于螺杆40与限位件30的焊接。
在本实施例中，凸台23具有限位槽24，限位件30的至少一部分设置在限位槽24内，限位件30的外周面与限位槽24的内周面限位配合。通过上述设置可实现限位件30和连接件20在周向的限位。可选地，限位件30与限位槽24过盈配合，以提高连接强度。限位件30可通过压装的方式装配到限位槽24内，这样工艺简单，便于操作，生产成本低。
在本实施例中，限位件30的外周面由多个平面和/或弧面组成，限位槽24的内周面的形状与限位件30的外周面的形状匹配。通过上述设置可以便于实现限位件30和连接件20在周向的限位，防止两者在周向发生相对移动。
在本实施例中，限位件30与限位槽24过盈配合。这样可以提高两者的连接强度。具体地，可以将限位件30压装在限位槽24内。
在本实施例中，螺杆40穿过第二配合孔31，螺杆40的外壁与第二配合孔31的内壁焊接。这样可实现螺杆40与限位件30的可靠固定。并且这样无需将螺杆40与连接件20固定连接，无需将限位件30与连接件20焊接，就能实现三者的可靠固定，便于装配。
可选地，螺杆40包括相互连接的第一杆段和第二杆段，第一杆段的直径小于第二杆段的直径，第一杆段穿过第一配合孔21和第二配合孔31，第一杆段和第二杆段之间的台阶与连接件20抵接，以实现两者的轴向限位和定位。
具体地，连接件20由聚醚类塑料制成。采用此种材料，强度高，成本低。
在本实施例中，限位件30为平板冲压成型结构。由平板冲压成型限位件30，便于加工，效率高，成本低。
在本实施例中，连接件20的外周面由多个平面和/或弧面组成，磁转子10的内壁上具有环形凹槽，连接件20的周缘设置在环形凹槽内，环形凹槽的环形底壁与连接件20的外周面的形状匹配。采用上述设置可实现连接件20和磁转子10的可靠连接，并且避免了两者在周向发生相对运动。
本申请提供的电子膨胀阀包括磁转子10、连接件20、限位件30、螺杆40和导动轴50，其中，连接件20的至少一部分固定设置在磁转子10内，连接件20具有第一配合孔21，连接件20为注塑成型结构；限位件30与连接件20限位配合，限位件30具有第二配合孔31，第二配合孔31与第一配合孔21对应设置；螺杆40穿过第一配合孔21，且螺杆40与第二配合孔31的内壁固定连接；导动轴50固定设置在磁转子10的内壁上，导动轴50沿磁转子10的轴向在磁转子10内延伸。采用该方案，连接件20为注塑成型结构，并且连接件20与限位件30限位配合，与现有的粉末冶金结构的连接件20相比，可以降低单个零件的制造成本，并且连接件20与限位件30无需焊接，可以降低装配成本。将导动轴50固定设置在磁转子10的内壁上，可便于加工和装配。
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 (10)

  1. 一种电子膨胀阀，其特征在于，包括：
    磁转子(10)；
    连接件(20)，所述连接件(20)的至少一部分固定设置在所述磁转子(10)内，所述连接件(20)具有第一配合孔(21)，所述连接件(20)为注塑成型结构；
    限位件(30)，所述限位件(30)与所述连接件(20)限位配合，所述限位件(30)具有第二配合孔(31)，所述第二配合孔(31)与所述第一配合孔(21)对应设置；
    螺杆(40)，所述螺杆(40)穿过所述第一配合孔(21)，且所述螺杆(40)与所述第二配合孔(31)的内壁固定连接；
    导动轴(50)，固定设置在所述磁转子(10)的内壁上，所述导动轴(50)沿所述磁转子(10)的轴向在所述磁转子(10)内延伸。
  2. 根据权利要求1所述的电子膨胀阀，其特征在于，所述导动轴(50)和所述磁转子(10)为一体结构。
  3. 根据权利要求1所述的电子膨胀阀，其特征在于，所述连接件(20)包括板体(22)和设置在所述板体(22)上的凸台(23)，所述第一配合孔(21)位于所述板体(22)上，所述凸台(23)与所述限位件(30)限位配合。
  4. 根据权利要求3所述的电子膨胀阀，其特征在于，所述凸台(23)具有限位槽(24)，所述限位件(30)的至少一部分设置在所述限位槽(24)内，所述限位件(30)的外周面与所述限位槽(24)的内周面限位配合。
  5. 根据权利要求4所述的电子膨胀阀，其特征在于，其特征在于，所述限位件(30)的外周面由多个平面和/或弧面组成，所述限位槽(24)的内周面的形状与所述限位件(30)的外周面的形状匹配。
  6. 根据权利要求4所述的电子膨胀阀，其特征在于，所述限位件(30)与所述限位槽(24)过盈配合。
  7. 根据权利要求1所述的电子膨胀阀，其特征在于，所述螺杆(40)穿过所述第二配合孔(31)，所述螺杆(40)的外壁与所述第二配合孔(31)的内壁焊接。
  8. 根据权利要求1所述的电子膨胀阀，其特征在于，所述连接件(20)由聚醚类塑料制成。
  9. 根据权利要求1所述的电子膨胀阀，其特征在于，所述限位件(30)为平板冲压成型结构。
  10. 根据权利要求1所述的电子膨胀阀，其特征在于，所述连接件(20)的外周面由多个平面和/或弧面组成，所述磁转子(10)的内壁上具有环形凹槽，所述连接件(20)的周缘 设置在所述环形凹槽内，所述环形凹槽的环形底壁与所述连接件(20)的外周面的形状匹配。
PCT/CN2021/089391 2020-06-17 2021-04-23 电子膨胀阀 WO2021253985A1 (zh)

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