WO2022037104A1 - 电子膨胀阀 - Google Patents

电子膨胀阀 Download PDF

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Publication number
WO2022037104A1
WO2022037104A1 PCT/CN2021/089392 CN2021089392W WO2022037104A1 WO 2022037104 A1 WO2022037104 A1 WO 2022037104A1 CN 2021089392 W CN2021089392 W CN 2021089392W WO 2022037104 A1 WO2022037104 A1 WO 2022037104A1
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WO
WIPO (PCT)
Prior art keywords
matching hole
expansion valve
guide shaft
electronic expansion
limiting
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Application number
PCT/CN2021/089392
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English (en)
French (fr)
Inventor
詹少军
楼金强
杨辉
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
Priority to JP2022567514A priority Critical patent/JP2023533106A/ja
Priority to KR1020237001465A priority patent/KR20230022303A/ko
Publication of WO2022037104A1 publication Critical patent/WO2022037104A1/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
    • F16K1/02—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 with screw-spindle
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the present application relates to the technical field of electronic expansion valves, and in particular, to an electronic expansion valve.
  • the connecting parts that cooperate with the magnetic rotor and the screw are usually powder metallurgy structures, and the cost of this process is relatively high.
  • the welding position of the connector is black when it is welded 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 the cost and improve the quality.
  • the present application provides an electronic expansion valve to reduce the manufacturing cost of the electronic expansion valve.
  • an electronic expansion valve comprising: a magnetic rotor; a connector, at least a part of the connector is fixedly arranged in the magnetic rotor, the connector is an injection molding structure, and
  • the connecting piece includes a plate body and a protruding column arranged on the plate body, the plate body has a first matching hole; a limiter has spaced limit holes and a second matching hole, so The second matching hole is arranged corresponding to the first matching hole, and the protruding column is inserted into the limiting hole; the screw rod passes through the first matching hole, and the screw rod is connected to the The inner wall of the second matching hole is fixedly connected; the guide shaft is fixedly arranged in the magnet rotor, and the guide shaft extends in the magnet rotor along the axial direction of the magnet rotor.
  • a plurality of the protruding posts there are a plurality of the protruding posts, a plurality of the protruding posts are arranged around the first matching hole, there are a plurality of the limiting holes, and a plurality of the limiting holes are arranged around the second matching hole , a plurality of the protruding posts and the plurality of the limiting holes are connected in a one-to-one correspondence.
  • the plate body includes a flat plate and a convex plate protruding from the flat plate, the size of the convex plate in the radial direction of the screw is smaller than the size of the flat plate, and the convex column is located on the convex plate. board.
  • the guide shaft and the flat plate are connected, and the guide shaft and the convex plate are respectively located on both sides of the flat plate.
  • the guide shaft is fixedly connected with the plate body.
  • the guide shaft is an injection molding structure.
  • connecting piece and the guide shaft are of an integral structure.
  • the connector and the guide shaft are made of polyphenylene sulfide.
  • the limiting member and the screw rod are made of metal, and the connecting member and the limiting member are connected by fusion riveting.
  • the screw rod passes through the second matching hole, and the outer wall of the screw rod is welded with the inner wall of the second matching hole.
  • an electronic expansion valve includes a magnetic rotor, a connecting piece, a limit piece, a screw rod and a guide shaft. At least a part of the connecting piece is fixedly arranged in the magnetic rotor.
  • the connecting piece is: The injection molding structure, the connecting piece includes a plate body and a convex column arranged on the plate body, the plate body has a first matching hole; the limiter has spaced limit holes and a second matching hole, and the second matching hole is connected with the first matching hole.
  • the matching holes are correspondingly arranged, and the protruding column is arranged in the limiting hole; the screw rod passes through the first matching hole, and the screw rod is fixedly connected with the inner wall of the second matching hole; the guiding shaft is fixedly arranged in the magnetic rotor, and the guiding shaft is along the magnetic The axial direction of the rotor extends within the magnetic rotor.
  • the connecting piece is an injection molding structure, and the connecting piece and the limiting piece are connected through the cooperation of the convex column and the limiting hole. Compared with the existing connecting piece of powder metallurgy structure, the manufacturing cost of a single part can be reduced. , and the connecting piece and the limiting piece do not need to be welded, which can reduce the assembly cost.
  • FIG. 1 shows a schematic structural diagram of an electronic expansion valve provided by an embodiment of the present application
  • Figure 2 shows a perspective view of the electronic expansion valve in Figure 1;
  • Fig. 3 shows the schematic diagram of the partial structure in Fig. 1;
  • Fig. 4 shows the schematic diagram of the connector and the guide shaft in Fig. 1;
  • FIG. 5 shows a schematic structural diagram of the limiting member in FIG. 1 .
  • an embodiment of the present application provides an electronic expansion valve, including: a magnetic rotor 10; , the connecting member 20 includes a plate body 22 and a convex column 27 arranged on the plate body 22, the plate body 22 has a first matching hole 21; the limiting member 30, the limiting member 30 has spaced limit holes 32 and second The matching hole 31 and the second matching hole 31 are arranged corresponding to the first matching hole 21 , and the protruding post 27 is inserted in the limiting hole 32 ; the screw rod 40 , the screw rod 40 passes through the first matching hole 21 , and the screw rod 40 is matched with the second matching hole 21 .
  • the inner wall of the hole 31 is fixedly connected; the guide shaft 50 is fixedly arranged in the magnet rotor 10 , and the guide shaft 50 extends in the magnet rotor 10 along the axial direction of the magnet rotor 10 .
  • the connecting piece 20 is an injection molding structure, and the connecting piece 20 and the limiting piece 30 are connected through the cooperation of the protruding post 27 and the limiting hole 32.
  • the multiple protruding posts 27 there are multiple protruding posts 27 , the multiple protruding posts 27 are arranged around the first matching hole 21 , there are multiple limiting holes 32 , and the multiple limiting holes 32 are arranged around the second matching hole 31 .
  • the protruding posts 27 are connected to the plurality of limiting holes 32 in a one-to-one correspondence. In this way, the connection strength of the connecting member 20 and the limiting member 30 can be improved through the cooperation of the plurality of protruding posts 27 and the plurality of limiting holes 32 .
  • the plate body 22 includes a flat plate and a convex plate protruding from the flat plate.
  • the size of the convex plate in the radial direction of the screw 40 is smaller than that of the flat plate, and the convex column 27 is located on the convex plate. In this way, the thickness of the central region of the plate body 22 is relatively large, and after being matched with the screw rod 40 , the stability of the screw rod 40 can be improved.
  • the guide shaft 50 is fixedly connected to the plate body 22 .
  • the guide shaft 50 may also be fixedly arranged on the inner wall of the magnet rotor 10 .
  • the guide shaft 50 is connected to the flat plate, and the guide shaft 50 and the convex plate are respectively located on two sides of the flat plate.
  • the guide shaft 50 is an injection molding structure. In this way, the guide shaft 50 is made of non-metallic material, which can reduce the cost.
  • the connecting member 20 and the guide shaft 50 are integrally formed. This not only reduces the manufacturing cost, but also improves the structural strength of the connector 20 and the guide shaft 50 .
  • the connecting member 20 and the guide shaft 50 are made of polyphenylene sulfide (PPS).
  • PPS polyphenylene sulfide
  • the polyphenylene sulfide material has relatively high strength and high temperature resistance, which can reduce costs while meeting performance requirements.
  • the limiting member 30 and the screw rod 40 are made of metal, and the connecting member 20 and the limiting member 30 are connected by fusion riveting. In this way, the problems of blackening of welding between the connecting member 20 and the limiting member 30, insufficient welding strength, and difficulty in identifying the welding quality can be avoided.
  • the screw rod 40 passes through the second matching hole 31 , and the outer wall of the screw rod 40 is welded with the inner wall of the second matching hole 31 .
  • the limiting member 30 and the screw rod 40 are welded between stainless steel, and the welding is reliable, the strength is high, and the welding quality can be identified.
  • the limiting member 30 can be stamped and formed from a plate, which is simple in processing, low in cost and strong in manufacturability.
  • process holes on the plate body which can reduce the amount of material.
  • the peripheral edge of the lower end of the first fitting hole 21 is chamfered to facilitate penetration of the screw rod 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. 21 and the limiter 30. Solder can be placed in the third matching hole to facilitate the welding of the screw 40 and the limiting member 30 .
  • 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 segment and the second rod segment abuts against the connecting piece 20 to achieve axial limit and positioning of the two.

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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)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

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），连接件（20）的至少一部分固定设置在磁转子（10）内，连接件（20）为注塑成型结构，连接件（20）包括板体（22）和设置在板体（22）上的凸柱（27），板体（22）具有第一配合孔（21）；限位件（30）具有间隔开的限位孔（32）和第二配合孔（31），第二配合孔（31）与第一配合孔（21）对应设置，凸柱（27）穿设在限位孔（32）内；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）内，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）通过凸柱（27）和限位孔（32）的配合实现连接，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。

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，所述连接件为注塑成型结构，所述连接件包括板体和设置在所述板体上的凸柱，所述板体具有第一配合孔；限位件，所述限位件具有间隔开的限位孔和第二配合孔，所述第二配合孔与所述第一配合孔对应设置，所述凸柱穿设在所述限位孔内；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内，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，所述凸柱为多个，多个所述凸柱围绕所述第一配合孔设置，所述限位孔为多个，多个所述限位孔围绕所述第二配合孔设置，多个所述凸柱和多个所述限位孔一一对应连接。
进一步地，所述板体包括平板和凸出设置在所述平板上的凸板，在所述螺杆的径向上所述凸板的尺寸小于所述平板的尺寸，所述凸柱位于所述凸板上。
进一步地，所述导动轴和所述平板连接，所述导动轴和所述凸板分别位于所述平板的两侧。
进一步地，所述导动轴与所述板体固定连接。
进一步地，所述导动轴为注塑成型结构。
进一步地，所述连接件和所述导动轴为一体结构。
进一步地，所述连接件和所述导动轴由聚苯硫醚制成。
进一步地，所述限位件和所述螺杆由金属制成，所述连接件和所述限位件熔铆连接。
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。
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，连接件的至少一部分固定设置在磁转子内，连接件为注塑成型结构，连接件包括板体和设置在板体上的凸柱，板体具有第一配合孔；限位件具有间隔开的限位孔和第二配合孔，第二配合孔与第一配合孔对应设置，凸柱穿设在限位孔内；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内，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通过凸柱和限位孔的配合实现连接，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。
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中的电子膨胀阀的立体图；
图3示出了图1中的部分结构的示意图；
图4示出了图1中的连接件和导动轴的示意图；
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；27、凸柱；30、限位件；31、第二配合孔；32、限位孔；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为注塑成型结构，连接件20包括板体22和设置在板体22上的凸柱27，板体22具有第一配合孔21；限位件30，限位件30具有间隔开的限位孔32和第二配合孔31，第二配合孔31与第一配合孔21对应设置，凸柱27 穿设在限位孔32内；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内，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通过凸柱27和限位孔32的配合实现连接，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20与限位件30无需焊接，可以降低装配成本。
在本实施例中，凸柱27为多个，多个凸柱27围绕第一配合孔21设置，限位孔32为多个，多个限位孔32围绕第二配合孔31设置，多个凸柱27和多个限位孔32一一对应连接。这样通过多个凸柱27和多个限位孔32配合，可以提高连接件20和限位件30的连接强度。
具体地，板体22包括平板和凸出设置在平板上的凸板，在螺杆40的径向上凸板的尺寸小于平板的尺寸，凸柱27位于凸板上。这样板体22的中部区域厚度较大，在与螺杆40配合后，可提高螺杆40的稳定性。
在本实施例中，导动轴50与板体22固定连接。或者，在未图示出的实施例中，导动轴50也可以固定设置在磁转子10的内壁上。
具体地，导动轴50和平板连接，导动轴50和凸板分别位于平板的两侧。
在本实施例中，导动轴50为注塑成型结构。这样导动轴50由非金属材料制成，可以降低成本。
具体地，连接件20和导动轴50为一体结构。这样既降低了制造成本，又提高了连接件20和导动轴50的结构强度。
在本实施例中，连接件20和导动轴50由聚苯硫醚(PPS)制成。聚苯硫醚材料强度比较高，并且耐高温，这样在满足性能要求的同时可以降低成本。
在本实施例中，限位件30和螺杆40由金属制成，连接件20和限位件30熔铆连接。这样可避免连接件20和限位件30焊接发黑，焊接强度不足，及焊接质量难识别问题。
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。这样限位件30与螺杆40为不锈钢间焊接，焊接可靠，强度高，焊接质量可识别。
其中，限位件30可由板材冲压成型，加工简单，成本低，可制造性强。
可选地，板体上具有工艺孔，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。
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。
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)为注塑成型结构，所述连接件(20)包括板体(22)和设置在所述板体(22)上的凸柱(27)，所述板体(22)具有第一配合孔(21)；
    限位件(30)，所述限位件(30)具有间隔开的限位孔(32)和第二配合孔(31)，所述第二配合孔(31)与所述第一配合孔(21)对应设置，所述凸柱(27)穿设在所述限位孔(32)内；
    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)内，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，所述凸柱(27)为多个，多个所述凸柱(27)围绕所述第一配合孔(21)设置，所述限位孔(32)为多个，多个所述限位孔(32)围绕所述第二配合孔(31)设置，多个所述凸柱(27)和多个所述限位孔(32)一一对应连接。
  3. 根据权利要求1所述的电子膨胀阀，其特征在于，所述板体(22)包括平板和凸出设置在所述平板上的凸板，在所述螺杆(40)的径向上所述凸板的尺寸小于所述平板的尺寸，所述凸柱(27)位于所述凸板上。
  4. 根据权利要求3所述的电子膨胀阀，其特征在于，所述导动轴(50)和所述平板连接，所述导动轴(50)和所述凸板分别位于所述平板的两侧。
  5. 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)与所述板体(22)固定连接。
  6. 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)为注塑成型结构。
  7. 根据权利要求1所述的电子膨胀阀，其特征在于，所述连接件(20)和所述导动轴(50)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，所述连接件(20)和所述导动轴(50)由聚苯硫醚制成。
  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)和所述螺杆(40)由金属制成，所述连接件(20)和所述限位件(30)熔铆连接。
  10. 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。
PCT/CN2021/089392 2020-08-19 2021-04-23 电子膨胀阀 WO2022037104A1 (zh)

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