WO2023098577A1 - 膨胀阀线圈结构以及膨胀阀 - Google Patents

膨胀阀线圈结构以及膨胀阀 Download PDF

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Publication number
WO2023098577A1
WO2023098577A1 PCT/CN2022/134248 CN2022134248W WO2023098577A1 WO 2023098577 A1 WO2023098577 A1 WO 2023098577A1 CN 2022134248 W CN2022134248 W CN 2022134248W WO 2023098577 A1 WO2023098577 A1 WO 2023098577A1
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WO
WIPO (PCT)
Prior art keywords
expansion valve
coil structure
pole plate
electromagnetic pole
valve coil
Prior art date
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PCT/CN2022/134248
Other languages
English (en)
French (fr)
Inventor
张积友
陈勇好
郑利峰
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.)
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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 EP22900382.7A priority Critical patent/EP4421414A1/en
Priority to KR1020247018165A priority patent/KR20240091248A/ko
Publication of WO2023098577A1 publication Critical patent/WO2023098577A1/zh
Priority to US18/676,655 priority patent/US20240309962A1/en

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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
    • 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
    • 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
    • F16K27/029—Electromagnetically actuated 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
    • F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
    • 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
    • F16K51/00—Other details not peculiar to particular types of valves or cut-off apparatus
    • 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
    • F25B41/345—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by solenoids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/081—Magnetic constructions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/128—Encapsulating, encasing or sealing
    • 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 solenoid valves, in particular to an expansion valve coil structure and the expansion valve.
  • the materials used for processing the coil structure of the expansion valve are usually coated with anti-rust materials on the surface.
  • the anti-rust layer on the material surface of the stator shell and the electrode plate is partially destroyed, and there are still multiple exposed surfaces formed by processing, resulting in the anti-rust of the formed expansion valve coil structure ability is greatly reduced.
  • an expansion valve coil structure and an expansion valve with enhanced anti-rust capability and comprehensive anti-rust are provided.
  • the expansion valve coil structure includes a stator shell and an electromagnetic pole plate, the stator shell and the electromagnetic pole plate are arranged oppositely; the stator shell and the electromagnetic pole plate are both It includes a plurality of processed exposed surfaces; the surface of the stator casing, the surface of the electromagnetic pole plate, and each of the processed exposed surfaces are respectively covered with an antirust layer.
  • Such setting can ensure that each exposed surface of the formed stator shell and electromagnetic pole plate is covered with an anti-rust layer, effectively improving the anti-rust ability of the stator shell and electromagnetic pole plate, thereby enhancing the anti-rust ability of the expansion valve coil structure , and improve the service life of the expansion valve coil structure.
  • the thickness of the antirust layer is 2 ⁇ m-30 ⁇ m.
  • the anti-rust layer has little influence on the magnetic permeability of the electromagnetic pole plate, and the anti-rust effect is better.
  • the thickness of the anti-rust layer can be selected from 2 ⁇ m to 30 ⁇ m. At this time, the requirements for machining accuracy are lower, and the machining difficulty is reduced.
  • the antirust layer has a thickness of 8 ⁇ m-16 ⁇ m.
  • the anti-rust layer is coated on the surface of the stator shell, the surface of the electromagnetic pole plate, and each of the exposed processing surfaces by means of plating or coating.
  • the plating or coating process is simple, and can cover each surface with an anti-rust layer evenly, especially for hidden holes such as hole walls and bending corners location, the process enables effective coating of concealed locations.
  • the stator shell is processed to form a plurality of first claw poles spaced along its circumference
  • the electromagnetic pole plate is correspondingly processed to form second claw poles spaced along its circumference.
  • One of the first claw poles and the plurality of second claw poles are disposed opposite to each other and inserted in sequence at intervals, and surround an inner hole forming the coil structure of the expansion valve.
  • the processed exposed surface includes each surface of the first claw pole and the second claw pole.
  • Such an arrangement can effectively enhance the antirust performance of the first claw pole and the second claw pole.
  • a plurality of first positioning holes are opened on the stator shell, and the walls of each connecting hole are respectively covered with the anti-rust layer.
  • an escape opening is provided on the circumferential side wall of the stator housing, and each surface of the escape opening is covered with the antirust layer.
  • a plurality of second positioning holes and a plurality of third positioning holes are opened on the electromagnetic pole plate, and the walls of each of the second positioning holes and the third positioning holes are respectively covered with The above-mentioned anti-rust layer.
  • the present application also provides an expansion valve, which includes a coil structure, and the coil structure adopts the coil structure described in any one of the above items.
  • Fig. 1 is a schematic structural diagram of a stator housing in an embodiment of the present application.
  • Fig. 2 is a schematic structural diagram of an electromagnetic pole plate in an embodiment of the present application.
  • Fig. 3 is a cross-sectional view of an expansion valve coil structure in an embodiment of the present application.
  • Fig. 4 is a schematic structural diagram of an expansion valve in an embodiment of the present application.
  • Fig. 5 is a cross-sectional view of an expansion valve in an embodiment of the present application.
  • expansion valve coil structure 10
  • stator shell 11, first claw pole; 12, avoidance opening; 14, first positioning hole; 20, electromagnetic pole plate; 21, second claw pole; 22, ear 23.
  • Coil bobbin 31. Insertion part; 40.
  • a component when a component is said to be “mounted on” another component, it may be directly mounted on another component or there may be an intervening component.
  • a component When a component is said to be “set on” another component, it may be set directly on the other component or there may be an intervening component at the same time.
  • a component When a component is said to be “fixed” to another component, it may be directly fixed to the other component or there may be an intervening component at the same time.
  • the present application provides an expansion valve 200, which is mainly composed of a valve body (not shown in the figure) and a coil structure.
  • the expansion valve coil structure 100 includes a stator housing 10 and an electromagnetic pole plate 20, and the stator housing 10 and the electromagnetic pole plate 20 are arranged opposite to each other.
  • the stator shell 10 and the electromagnetic pole plate 20 are the main components of the expansion valve coil structure 100 .
  • the surface of the material used to form the stator shell and the electromagnetic pole plate has an anti-rust coating before processing. After processing and forming, the anti-rust layer on the surface of the raw material is damaged, and there are many processed cuts and cut surfaces on the formed stator shell and electromagnetic pole plate. There is no anti-rust layer on the exposed surface of each process, so the stator shell and the electromagnetic pole plate are easy to rust, and the coil cannot be effectively protected, which affects the service life and use effect of the expansion valve 200 .
  • the stator housing 10 and the electromagnetic pole plate 20 all include a plurality of processed exposed surfaces 50; the surface of the stator housing 10, the surface of the electromagnetic pole plate 20, each processed exposed surface The surfaces 50 are respectively covered with antirust layers 60 .
  • anti-rust treatment is carried out on the processed stator shell 10 and electromagnetic pole plate 20, and the processed exposed surface 50 on the stator shell 10 and electromagnetic pole plate 20 is covered with an anti-rust layer 60 to achieve comprehensive anti-rust protection.
  • the anti-rust ability of the stator shell 10 and the electromagnetic pole plate 20 can be effectively improved, thereby enhancing the anti-rust ability of the expansion valve coil structure 100 and increasing the service life of the expansion valve coil structure 100 .
  • a plurality of first claw poles 11 distributed along its circumferential direction are processed and formed on the stator housing 10, and second claw poles 21 are formed on the electromagnetic pole plate 20 correspondingly distributed along its circumferential direction, and many A first claw pole 11 and a plurality of second claw poles 21 are disposed opposite to each other and inserted in sequence at intervals, and surround the inner hole 40 forming the expansion valve coil structure 100 .
  • the processed exposed surface 50 includes each surface of the first claw pole 11 and the second claw pole 21 .
  • a plurality of first claw poles 11 and second claw poles 21 are respectively processed and formed on the stator housing 10 and the electromagnetic pole plate 20, thereby causing damage to the anti-rust layer 60 in the raw material, and additional cutting surfaces or cuts are generated through processing, which is important for The cut surfaces and/or notches formed after the first claw pole 11 and the second claw pole 21 are covered with the anti-rust layer 60 , which improves the anti-rust capability of the first claw pole 11 and the second claw pole 21 .
  • the expansion valve coil structure 100 also includes a bobbin 30, the coil 70 is wound on the bobbin 30 to form a coil winding, the coil winding is located between the stator shell 10 and the electromagnetic pole plate 20, and the first claw pole 11 and the second claw pole 21 It is located in the coil winding, so that the wound coil 70 surrounds the inner hole 40 of the expansion valve coil structure 100 .
  • the stator housing 10 is provided with a plurality of first positioning holes 14 , and the positioning protrusions on the coil bobbin 30 extend into the first positioning holes 14 to realize the positioning between the coil bobbin and the stator housing 10 .
  • the walls of each first positioning hole 14 are respectively covered with an antirust layer 60 , that is, the processed exposed surface 50 includes the surface of the hole wall of the first positioning hole 14 . In this way, the stator case 10 can be protected from the details, preventing the connection of the stator case 10 and the coil frame 30 from rusting, which affects the connection stability and service life of the stator case 10 and the coil frame 30 .
  • the circumvention port 12 is provided on the circumferential side wall of the stator housing 10, when assembling, the stator housing 10 covers the coil frame 30 and the electromagnetic pole plate 20, and the avoidance hole is used for the coil frame 30
  • the part protruding from the stator shell 10 passes through, for example, the coil frame 30 has a protruding wire insertion part 31 , and the electromagnetic pole plate 20 has a protruding ear part 22 .
  • each surface of the avoidance port 12 is covered with an anti-rust layer 60, that is, the processed exposed surface 50 includes the processed surface of the avoidance port 12, thereby preventing the partial position of the stator housing 10 from rusting and strengthening the antirust capability of the stator housing 10 .
  • the electromagnetic pole plate 20 is provided with a plurality of second positioning holes 23 and a plurality of third positioning holes 24, and on the hole wall of each second positioning hole 23 and third positioning hole 24 Covered with anti-rust layer 60 respectively, that is, the processed exposed surface 50 includes the hole wall surfaces of the second positioning hole 23 and the third positioning hole 24 .
  • the expansion valve coil structure 100 includes two coil bobbins 30, two electromagnetic pole plates 20 are located between the two coil bobbins 30, and the second pole claws on the two electromagnetic pole plates 20 are arranged opposite to each other, wherein the second positioning hole 23 is used to cooperate with the positioning protrusion on the adjacent electromagnetic pole plate 20 to realize the mutual positioning between the two electromagnetic pole plates 20, and the third positioning hole 24 is used to cooperate with the positioning protrusion on the coil bobbin 30 to realize both The mutual positioning between them makes the corresponding two coil bobbins 30 relatively fixed, preventing the coil bobbin 30 and the electromagnetic pole plate 20 from shifting.
  • the second positioning holes 23 and the third positioning holes 24 are alternately arranged so that the positioning positions are evenly distributed and the positioning is more stable.
  • a plurality of second positioning holes 23 and a plurality of third positioning holes 24 are arranged along the circumferential direction of the electromagnetic pole plate 20 to ensure that all directions of the electromagnetic pole plate 20 can be fixed to prevent the electromagnetic pole plate 20 from shift.
  • the anti-rust layer 60 is coated on the surface of the stator housing 10 , the surface of the electromagnetic pole plate 20 , and each processed exposed surface 50 by means of plating or coating.
  • the plating or coating process is simple, and can cover each surface with antirust layer 60 evenly, especially for hole walls, bending corners And other hidden positions, this process can effectively coat hidden positions.
  • the manner of processing the anti-rust layer 60 is not limited to the above description.
  • the thickness of the antirust layer 60 is 2 ⁇ m-30 ⁇ m.
  • the thickness of the antirust layer 60 in the present application is 2 ⁇ m-30 ⁇ m, and within this range, the antirust layer 60 has less influence on the magnetic permeability of the electromagnetic pole plate 20.
  • the thickness of the anti-rust layer 60 is not limited to the above-mentioned thickness, and the thickness of the anti-rust layer can also be determined according to actual applications.
  • the thickness of the anti-rust layer 60 is 8 ⁇ m-16 ⁇ m, thus, the influence of the anti-rust layer 60 on the magnetic permeability of the electromagnetic pole plate 20 can be ignored.
  • the antirust layer 60 is zinc plating, nickel plating, tin plating, chrome plating, etc. Of course, it can also be other antirust materials, such as alloy plating.
  • the corresponding anti-rust layer is mainly selected according to the application environment. For example, in the environment of organic acid, the anti-rust layer can be tin plating; when electrochemical corrosion occurs, the plated metal at the anode is continuously lost to protect the base metal, and the stator The shell 10 and the electromagnetic pole plate 20 play the role of electrochemical protection.
  • one or more layers of anti-rust layer can be provided, and the material of each layer of anti-rust layer can be the same or different, for example, firstly, the surface of the stator shell is coated with zinc coating, and then coated with hardness Higher chrome plating etc.
  • the stator shell 10 and the electromagnetic pole plate 20 are made of non-austenitic stainless steel.
  • Such a design can further improve the corrosion resistance of the product without affecting the magnetic permeability of the product.
  • the non-austenitic stainless steel has better strength properties, so that the first claw pole 11 and the second claw pole 21 are not easily deformed, and the influence of claw pole deformation on the operating performance can be avoided.
  • the thickness of the claw poles can be further reduced, which is beneficial to miniaturization of the expansion valve 200 .

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

Abstract

一种膨胀阀线圈结构(100)以及膨胀阀(200)。膨胀阀线圈结构(100)包括定子外壳(10)和电磁极板(20)，定子外壳(10)和电磁极板(20)相对设置；定子外壳(10)和电磁极板(20)上均具有多个加工裸露面(50)；定子外壳(10)的表面、电磁极板(20)的表面、每个加工裸露面(50)上分别覆有防锈层(60)。膨胀阀(200)包括线圈结构。

Description

膨胀阀线圈结构以及膨胀阀
相关申请
本申请要求2021年11月30日申请的，申请号为202122989503.4，发明名称为“膨胀阀线圈结构以及膨胀阀”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
本申请涉及电磁阀技术领域，特别是涉及一种膨胀阀线圈结构以及膨胀阀。
背景技术
相关技术中，加工膨胀阀线圈结构所采用的材料通常表面均涂覆有防锈材料。将对应的材料进行加工形成定子外壳和电磁极板后，定子外壳和电极板的材料表面的防锈层部分被破坏，并且还存在多个加工形成的裸露面，导致成型膨胀阀线圈结构防锈能力大大减弱。
发明内容
根据本申请的各种实施例，提供一种防锈能力增强、防锈全面的膨胀阀线圈结构以及膨胀阀。
本申请提供的一种膨胀阀线圈结构，所述膨胀阀线圈结构包括定子外壳和电磁极板，所述定子外壳和所述电磁极板相对设置；所述定子外壳和所述电磁极板上均包括多个加工裸露面；所述定子外壳的表面、所述电磁极板的表面、每个所述加工裸露面上分别覆有防锈层。
如此设置，可以确保成型后的定子外壳和电磁极板的每个裸露面上均覆有防锈层，有效提高定子外壳和电磁极板的防锈能力，从而增强膨胀阀线圈结构的防锈能力，并提高膨胀阀线圈结构的使用寿命。
在其中一个实施例中，所述防锈层的厚度为2μm-30μm。
在该厚度范围内，防锈层对电磁极板的导磁性能影响较小，并且防锈效果较佳。综合考虑导磁性能和防锈效果以及加工工艺，防锈层的厚度可选为2μm-30μm。此时，对加工精度的要求较低，加工难度降低。
在其中一个实施例中，所述防锈层的厚度为8μm-16μm。
如此设置，防锈层对电磁极板的导磁性能的影响可以忽略不计。
在其中一个实施例中，所述防锈层通过镀覆或涂覆的方式覆于所述定子外壳的表面、所述电磁极板的表面、以及每个所述加工裸露面上。
通过镀覆或涂覆的方式于各个表面上添加防锈层，镀覆或涂覆工艺简单，且对每个表面都能够均匀的覆盖防锈层，尤其是针对孔壁，折弯角落等隐蔽位置，该工艺能够对隐蔽位置进行有效涂覆。
在其中一个实施例中，所述定子外壳上加工形成多个沿其周向间隔分布的第一爪极，所述电磁极板上对应的加工形成沿其周向间隔分布第二爪极，多个所述第一爪极和多个所述第二爪极相对设置且依次间隔插装设置，并围设形成所述膨胀阀线圈结构的内孔。
在其中一个实施例中，所述加工裸露面包括所述第一爪极和所述第二爪极的每个表面。
如此设置，有效增强第一爪极和所述第二爪极的防锈性能。
在其中一个实施例中，所述定子外壳上开设有多个第一定位孔，每个所述连接孔的孔壁上分别覆有所述防锈层。
在其中一个实施例中，所述定子外壳的周向侧壁上开设避让口，所述避让口的每个表面均覆有所述防锈层。
在其中一个实施例中，所述电磁极板上开设有多个第二定位孔和多个第三定位孔，每个所述第二定位孔和第三定位孔的孔壁上分别覆有所述防锈层。
本申请还提供一种膨胀阀，包括线圈结构，所述线圈结构采用如上任一项所述的线圈结构。
本申请的一个或多个实施例的细节在下面的附图和描述中提出。本申请的其它特征、目的和优点将从说明书、附图以及权利要求书变得明显。
附图说明
为了更好地描述和说明这里公开的那些发明的实施例和/或示例，可以参考一幅或多幅附图。用于描述附图的附加细节或示例不应当被认为是对所公开的发明、目前描述的实施例和/或示例以及目前理解的这些发明的最佳模式中的任何一者的范围的限制。
图1为本申请一个实施例中的定子外壳的结构示意图。
图2为本申请一个实施例中的电磁极板的结构示意图。
图3为本申请一个实施例中的膨胀阀线圈结构的剖视图。
图4为本申请一个实施例中的膨胀阀的结构示意图。
图5为本申请一个实施例中的膨胀阀的剖视图。
图中，100、膨胀阀线圈结构；10、定子外壳；11、第一爪极；12、避让口；14、第一定位孔；20、电磁极板；21、第二爪极；22、耳部；23、第二定位孔；24、第三定位孔；30、线圈骨架；31、插线部；40、内孔；50、加工裸露面；60、防锈层；70、线圈；200、膨胀阀。
具体实施方式
下面将结合本申请实施方式中的附图，对本申请实施方式中的技术方案进行清楚、完整地描述，显然，所描述的实施方式仅仅是本申请一部分实施方式，而不是全部的实施方式。基于本申请中的实施方式，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施方式，都属于本申请保护的范围。
需要说明的是，当组件被称为“装设于”另一个组件，它可以直接装设在另一个组件上或者也可以存在居中的组件。当一个组件被认为是“设置于”另一个组件，它可以是直接设置在另一个组件上或者可能同时存在居中组件。当一个组件被认为是“固定于”另一个组件，它可以是直接固定在另一个组件上或者可能同时存在居中组件。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的实施方式的目的，不是旨在于限制本申请。本文所使用的术语“或/及”包括一个或多个相关的所列项目的任意的和所有的组合。
参阅图3-图5，本申请提供一种膨胀阀200，该膨胀阀主要由阀体(图中未示出)和线圈结构构成。其中，膨胀阀线圈结构100包括定子外壳10和电磁极板20，定子外壳10和电磁极板20相对设置。
定子外壳10和电磁极板20是膨胀阀线圈结构100的主要组成构件，然而，在现有技术中，加工前，用于加工形成定子外壳和电磁极板的材料表面已有防锈镀层。在加工成型之后，原材料表面的防锈层遭受破坏，成型的定 子外壳和电磁极板上存在多个加工的切口以及切面等加工裸露面。各个加工裸露面无防锈层，导致定子外壳和电磁极板较易生锈，无法有效的防护线圈，影响膨胀阀200的使用寿命以及使用效果。
由此，参阅图1和图2，在本申请中，定子外壳10和电磁极板20上均包括多个加工裸露面50；定子外壳10的表面、电磁极板20的表面、每个加工裸露面50上分别覆有防锈层60。
本申请通过对加工成型后的定子外壳10和电磁极板20进行防锈处理，在定子外壳10和电磁极板20上的加工裸露面50上覆盖防锈层60，实现全面的防锈保护，能够有效提高定子外壳10和电磁极板20的防锈能力，从而增强膨胀阀线圈结构100的防锈能力，并提高膨胀阀线圈结构100的使用寿命。
参阅图1和图2，定子外壳10上加工形成多个沿其周向间隔分布的第一爪极11，电磁极板20上对应的加工形成沿其周向间隔分布第二爪极21，多个第一爪极11和多个第二爪极21相对设置且依次间隔插装设置，并围设形成膨胀阀线圈结构100的内孔40。
在其中一个实施例中，加工裸露面50包括第一爪极11和第二爪极21的每个表面。在定子外壳10和电磁极板20上分别加工形成多个第一爪极11和第二爪极21，从而导致破坏原材料中的防锈层60，并且通过加工额外产生了切面或切口等，对第一爪极11和第二爪极21加工后形成的切面和/或切口均覆盖防锈层60，提高第一爪极11和第二爪极21的防锈能力。
膨胀阀线圈结构100还包括线圈骨架30，线圈70绕设在线圈骨架30上构成线圈绕组，线圈绕组位于定子外壳10和电磁极板20之间，并且第一爪极11和第二爪极21位于线圈绕组内，以使得绕设的线圈70围设在膨胀阀线圈结构100的内孔40外。
参阅图1，定子外壳10上开设有多个第一定位孔14，线圈骨架30上的定位凸起伸入第一定位孔14内能够实现线圈骨架与定子外壳10之间的定位。在一些实施例中，每个第一定位孔14的孔壁上分别覆有防锈层60，即加工裸露面50包括第一定位孔14的孔壁表面。如此，可以从细节处防护定子外壳10，防止定子外壳10和线圈骨架30的连接处生锈，影响定子外壳10和线圈骨架30的连接稳定性和使用寿命。
请继续参阅图1和图3，定子外壳10的周向侧壁上开设避让口12，装配时，定子外壳10罩设至线圈骨架30以及电磁极板20，避让孔用于供线圈骨架30上凸出于定子外壳10的部分穿过，例如线圈骨架30上具有凸出的插线部31，电磁极板20上凸出的耳部22。并且，在避让口12的每个表面上均覆有防锈层60，即加工裸露面50包括避让口12的加工表面，从而防止定子外壳10局部位置生锈，加强定子外壳10的防锈能力。
另外，请参阅图2和图3，电磁极板20上开设有多个第二定位孔23和多个第三定位孔24，每个第二定位孔23和第三定位孔24的孔壁上分别覆有防锈层60，即加工裸露面50包括第二定位孔23和第三定位孔24的孔壁表面。膨胀阀线圈结构100中包括两个线圈骨架30，两块电磁极板20位于两个线圈骨架30之间，且两个电磁极板20上的第二极爪相背设置，其中第二定位孔23用于与相邻的电磁极板20上的定位凸起配合实现两个电磁极板20之间的相互定位作用，第三定位孔24用于线圈骨架30上的定位凸起配合实现两者之间的相互定位，从而使得对应的两个线圈骨架30相对固定不动，防止线圈骨架30和电磁极板20移位。
在其中一个实施例中，第二定位孔23和第三定位孔24间隔交错设置，以使得定位位置分布均匀，定位更稳定。
在其中一个实施例中，多个第二定位孔23和多个第三定位孔24沿着电磁极板20的周向排布，确保电磁极板20各个方位均能够固定，防止电磁极板20移位。
在其中一个实施例中，防锈层60通过镀覆或涂覆的方式覆于定子外壳10的表面、电磁极板20的表面、每个加工裸露面50上。通过镀覆或涂覆的方式于各个表面上添加防锈层60，镀覆或涂覆工艺简单，且对每个表面都能够均匀的覆盖防锈层60，尤其是针对孔壁，折弯角落等隐蔽位置，该工艺能够对隐蔽位置进行有效涂覆。当然，在其他实施例中，防锈层60加工的方式不局限于以上所述。
在其中一个实施例中，防锈层60的厚度为2μm-30μm，当防锈层60厚度＜2μm时，生产过程中表面镀层受损失去防锈作用，而镀层厚度＞30μm时，镀层厚度偏大，容易造成镀层起泡脱落，失去防锈作用。因此，本申请中防锈层60的厚度为2μm-30μm，在该范围内，防锈层60对电磁极板20的导磁性能影响较小，当然，防锈层60的厚度越厚，防锈层60涂覆或者电镀涂覆在工序精度要求更低，从而降低产品加工成本。当然，在其他实施例中，防锈层的厚度也不局限于所述的厚度，也可以根据实际应用确定防锈层厚度。
更优的，防锈层60的厚度为8μm-16μm，如此，防锈层60对电磁极板20的导磁性能的影响可以忽略不计。
另外，防锈层60为锌镀层、镍镀层、锡镀层、铬镀层等，当然，也可以是其他防锈材料，例如合金镀层。主要根据应用环境选择有对应防锈层，例如，在有机酸环境下，防锈层可选为锡镀层；当发生电化学腐蚀时，处于阳极的镀层金属不断损耗以保护基体金属，进而对定子外壳10和电磁极板20起到电化学保护的作用。
在其中一个实施例中，防锈层可以设置一层或多层，且每层防锈层的材料可以相同也可以不同，例如，首先在定子外壳的表面镀覆锌镀层，接着再镀覆硬度较高的铬镀层等。
在其中一个实施例中，定子外壳10和电磁极板20采用非奥氏体不锈钢制成。如此设计，在不影响产品导磁能力的基础上，能进一步提高产品的抗腐蚀能力。非奥氏体不锈钢包括较好的强度性能，使得第一爪极11、第二爪极21不易变形，可避免爪极变形对于作动性能的影响。另外，还可进一步减薄爪极的厚度，有利于实现膨胀阀200小型化。
此外，需要说明的是，使用“第一”、“第二”等词语来限定零部件，仅仅是为了便于对相应零部件进行区别，如没有另行声明，上述词语并没有特殊含义，因此不能理解为对本申请保护范围的限制。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (10)

  1. 一种膨胀阀线圈结构，所述膨胀阀线圈结构包括定子外壳和电磁极板，所述定子外壳和所述电磁极板相对设置；
    其特征在于，所述定子外壳和所述电磁极板上均具有多个加工裸露面；所述定子外壳的表面、所述电磁极板的表面、每个所述加工裸露面上分别覆有防锈层。
  2. 根据权利要求1所述膨胀阀线圈结构，其中，所述防锈层的厚度为2μm-30μm。
  3. 根据权利要求2所述膨胀阀线圈结构，其中，所述防锈层的厚度为8μm-16μm。
  4. 根据权利要求1所述膨胀阀线圈结构，其中，所述防锈层通过镀覆或涂覆的方式覆于所述定子外壳的表面、所述电磁极板的表面、每个所述加工裸露面上。
  5. 根据权利要求1所述膨胀阀线圈结构，其中，所述定子外壳上加工形成多个沿其周向间隔分布的第一爪极，所述电磁极板上对应的加工形成多个沿其周向间隔分布第二爪极，多个所述第一爪极和多个所述第二爪极相对设置且依次间隔插装设置，并围设形成所述膨胀阀线圈结构的内孔。
  6. 根据权利要求5所述膨胀阀线圈结构，其中，所述加工裸露面包括所述第一爪极和所述第二爪极的每个表面。
  7. 根据权利要求1所述膨胀阀线圈结构，其中，所述定子外壳上开设有多个第一定位孔，每个所述第一定位孔的孔壁上分别覆有所述防锈层。
  8. 根据权利要求1所述膨胀阀线圈结构，其中，所述定子外壳的周向侧壁上开设避让口，所述避让口的每个表面均覆有所述防锈层。
  9. 根据权利要求1所述膨胀阀线圈结构，其中，所述电磁极板上开设有多个第二定位孔和多个第三定位孔，每个所述第二定位孔和每个所述第三定位孔的孔壁上分别覆有所述防锈层。
  10. 一种膨胀阀，包括线圈结构，其特征在于，所述线圈结构采用如权利要求1-9任一项所述的线圈结构。
PCT/CN2022/134248 2021-11-30 2022-11-25 膨胀阀线圈结构以及膨胀阀 WO2023098577A1 (zh)

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