WO2023019492A1 - 一种双稳态电磁阀 - Google Patents

一种双稳态电磁阀 Download PDF

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Publication number
WO2023019492A1
WO2023019492A1 PCT/CN2021/113392 CN2021113392W WO2023019492A1 WO 2023019492 A1 WO2023019492 A1 WO 2023019492A1 CN 2021113392 W CN2021113392 W CN 2021113392W WO 2023019492 A1 WO2023019492 A1 WO 2023019492A1
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Prior art keywords
electromagnet
ring magnet
hole
valve
fixed ring
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PCT/CN2021/113392
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English (en)
French (fr)
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韩冬
卢方
郑哲
郇泉
刘毅
龚国芳
杨华勇
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浙江大学
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Priority to PCT/CN2021/113392 priority Critical patent/WO2023019492A1/zh
Publication of WO2023019492A1 publication Critical patent/WO2023019492A1/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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • 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

  • the invention belongs to the field of electromagnetic valve equipment, and in particular relates to a bistable electromagnetic valve.
  • Solenoid valve is widely used in various fluid control systems because of its simple structure and working principle.
  • the structure of a traditional solenoid valve is shown in FIG. 1 , which mainly includes a valve body 11 , a return spring 12 , an electromagnetic coil 13 , a push rod 14 , a valve port 15 and an armature 16 .
  • the ejector rod of the solenoid valve pushes against the conical valve port under the action of the spring force, so that the valve port is closed.
  • the magnetic force generated by the coil attracts the armature to move upward against the spring force, and the valve port is opened.
  • the solenoid valve continues to energize the solenoid valve to keep the solenoid valve open until the electromagnetic suction disappears when the power is turned off, and the ejector pin presses the valve port again under the action of the spring force to close the valve.
  • the existing solenoid valve uses a mechanical spring as a recovery mechanism. To keep the valve open, the coil must be continuously energized so that the ejector rod can always press the spring, so that the valve port is unobstructed.
  • mechanical springs introduce two major drawbacks. First, with the increase of the opening times of the solenoid valve, the mechanical spring will inevitably fail. The force is reduced, so that the valve port seal is not firm. Second, the energy consumption is large. Only continuous energization can keep the valve open. In many cases, the valve is opened for a long time, and the disadvantage of energy consumption is more obvious. Moreover, long-term energization will cause serious copper loss and cause serious heat generation in the valve. In addition, the structure of the spring and the ejector rod is not conducive to the miniaturization of the solenoid valve, and the traditional solenoid valve is obviously not suitable for occasions with high space requirements.
  • the present invention adopts a bistable structure based on a magnetic spring to solve the above-mentioned defects.
  • Technical scheme of the present invention is as follows:
  • the invention provides a bistable electromagnetic valve, which includes an air inlet pipe, a valve body and an air outlet pipe; a cylindrical cavity is arranged in the valve body, and the air inlet pipe and the air outlet pipe are respectively connected to two ends of the cylindrical cavity;
  • a fixed ring magnet, a moving assembly and an electromagnet are sequentially arranged in the cylindrical cavity from the air inlet end to the air outlet end;
  • the fixed ring magnet is fixedly arranged at the air inlet end, and an inner hole communicating with the air inlet pipe is provided in the center ,
  • the electromagnet is fixed at the gas outlet, and the moving component can move between the fixed ring magnet and the electromagnet along the axial direction of the cylindrical cavity;
  • the moving assembly includes a non-magnetically conductive current flow part and a moving ring magnet connected to each other, wherein when the non-magnetic conductive current flow part is in close contact with the fixed ring magnet, its top surface can block the inner hole of the fixed ring magnet; There is a gap between the side of the magnetic conduction flow part and the wall surface of the cylindrical cavity; a number of flow side holes are provided on the side, and the bottom surface of the non-magnetic conduction flow part is provided with a vent hole connected to the flow side hole, and the moving The center of the ring magnet is provided with an inner hole communicating with the air hole;
  • the electromagnet includes an electromagnet end cover, a sealing cover, a cylindrical iron core and a coil, wherein the center of the cylindrical iron core is provided with an inner hole connected to the air outlet pipe; the cylindrical iron core is provided with a sealing cover Positioning shoulder, the center of the electromagnet end cover is provided with a through hole, which is installed on the end of the cylindrical iron core facing the inside of the valve body, the sealing cover is sleeved on the cylindrical iron core, and it abuts against the cylindrical iron core.
  • the sealing cover of the core is located at the shoulder, and the sealing cover is in sealing connection with the cylinder of the valve body; the coil is wound on the cylindrical iron core, and is located between the end cover of the electromagnet and the sealing cover.
  • the cylindrical cavity is provided with a fixed ring magnet installation hole on the side of the air intake end, where the fixed ring magnet is installed and the inner diameter of the inner hole is the same as the inner diameter of the air intake pipe.
  • valve body is provided with a square wiring hole through which the wiring of the electromagnet passes, and after the final assembly is completed, the hole is sealed.
  • the non-magnetic conduction current flow member includes a plurality of side surfaces uniformly distributed along the circumferential direction, each side is provided with a flow side hole.
  • the top of the moving ring magnet is provided with an installation groove for the non-magnetic conduction current-passing part, and the non-magnetic conduction current-passing part is installed in this groove, and the two are fixedly connected as a whole.
  • a sealing coating process hole is provided on the top surface of the non-magnetic conduction flow part, and a sealing material is coated in the hole to enhance the sealing effect when the valve is closed.
  • the electromagnet end cover is made of non-magnetic conductive material, which may be non-magnetic conductive metal or non-metal.
  • the beneficial effects of the present invention include:
  • the invention adopts the moving assembly to seal the valve port under the attraction of the fixed ring magnet, so that the valve keeps the normally closed state.
  • the moving component moves away from the valve port and sticks to the cylindrical iron core of the electromagnet, and the valve opens. Since the moving assembly can maintain a stable state at the upper limit position (close to the fixed ring magnet) and the lower limit position (close to the iron core of the electromagnet), the structure is a bistable structure. Therefore, even if the power is cut off when the moving assembly sticks to the cylindrical iron core of the electromagnet, the moving assembly will stay on the cylindrical iron core to keep the valve open. When the valve needs to be closed, it is only necessary to apply a reverse current to the electromagnet.
  • the moving component is repelled and returns to the initial position. After returning to the initial position, the moving component is in another stable state, that is, under the attraction of the fixed ring magnet Even if the electromagnet is de-energized, the moving component can stop at the initial position and make the valve close again. Therefore, the present invention can realize long-time opening and closing of the valve without long-time power supply.
  • the magnetic spring has the characteristic of variable stiffness, that is, the closer the ring magnet is to the cylindrical magnet, the greater the equivalent stiffness between them, and when the distance between the two is 0, its stiffness is much greater than that of the mechanical spring, so Not prone to failure.
  • the annular magnet replaces the ejector rod, which greatly reduces the size of the solenoid valve, which is beneficial to the miniaturization of the solenoid valve.
  • the invention aims at the problems of low reliability, high energy consumption and difficulty in miniaturization of traditional solenoid valves.
  • Two ring magnets and one electromagnet are combined to form a bistable structure, and a magnetic spring replaces the combination of a mechanical spring and a push rod, which not only improves The reliability of the solenoid valve is improved, and the energy consumption and size of the solenoid valve are also reduced. In tiny electronic systems, the invention has great application potential.
  • Figure 1 is a schematic structural diagram of a traditional solenoid valve
  • Fig. 2 is the exterior view of the bistable electromagnetic valve of the present invention
  • Fig. 3 is the explosion diagram of the bistable electromagnetic valve of the present invention.
  • Fig. 4 is the valve body structural diagram of bistable electromagnetic valve of the present invention.
  • Fig. 5 is the installation and sectional view of the mobile assembly of the present invention.
  • Fig. 6 is a schematic diagram of other forms of mobile components of the present invention.
  • Fig. 7 is the schematic diagram of electromagnet of the present invention.
  • Fig. 8 is a working principle diagram of the present invention.
  • the bistable electromagnetic valve proposed in this embodiment mainly includes an inlet pipe 1 , a valve body 2 and an outlet pipe 3 .
  • the valve body is connected with the intake pipe (integrated or fixed), and a fixed ring magnet 4 is installed near the inlet, and a moving assembly 5 containing the ring magnet can move axially in the cylindrical cavity in the valve body.
  • the intake pipe 1 is arranged at one end of the valve body, and a fixed ring magnet mounting hole 22 is arranged near the intake pipe, where the fixed ring magnet is installed and its inner hole diameter is the same as the inner diameter of the intake pipe, so Gas can enter the inner cavity of the valve through the air inlet pipe and the fixed ring magnet.
  • the end of the valve body (close to the outlet) is provided with a square wiring hole 21, through which the wiring of the electromagnet will pass. After the final assembly is completed, the hole needs to be sealed.
  • the moving assembly 5 is composed of a non-magnetic conduction flow element 51 and a moving ring magnet 52 fixedly assembled.
  • the top of the non-magnetic conduction flow part 51 is provided with a sealing coating process hole 511, which can be coated with sealing material to enhance the sealing effect when the valve is closed;
  • the top of the mobile ring magnet 52 is provided with a mounting groove for a non-magnetic conduction current flow piece, and the non-magnetic conduction flow flow piece is installed in this groove, and the two are fixedly connected as a whole, that is, a mobile assembly, which can be installed in the fixed ring magnet and Free movement between electromagnets.
  • the vent hole at the bottom of the non-magnetic conduction flow part communicates with the inner hole of the moving ring magnet, so gas can flow in from the flow side hole 512 of the non-magnetic conduction flow part and flow out from the inner hole of the moving ring magnet.
  • the structural form of the moving assembly of the present invention is not limited to the one shown in Figure 5 (double overflow side holes), and may also have other structural forms, as shown in Figure 6 .
  • Figure 6(b) and Figure 6(c) respectively show the moving assembly with three flow side holes and four flow side holes, the increase of flow side holes will help reduce the flow resistance and increase the flow.
  • the electromagnet 6 is composed of an electromagnet end cover 61 , a sealing cover 63 , a cylindrical iron core 64 and a winding coil 62 .
  • the cylindrical iron core 64 acts to bind the magnetic field lines generated by the energized coil 62 to enhance its magnetic coupling to the moving components, and its inner hole allows the airflow channel to pass through it.
  • the cylindrical iron core 64 is provided with a sealing cover positioning shoulder 641, the electromagnet end cover 61 is installed on one end of the cylindrical iron core, and the sealing cover 63 is installed on the sealing cover positioning shoulder 641 of the cylindrical iron core 64. , the electromagnet end cover and sealing cover are all fixedly connected with the cylindrical iron core, and finally the coil 62 is wound between them.
  • FIG 8 The working principle diagram of the solenoid valve of the present invention is shown in Figure 8.
  • the valve When the valve is in a non-working state (the coil is not energized), the moving assembly 5 is attracted by the fixed ring magnet 4 and is in close contact with it, thereby blocking the air port (fixed ring magnet 4). The inner hole of the magnet), resulting in the blockage of the air flow passage, and the valve is in a normally closed state ( Figure 8a).
  • the electromagnet When the valve is in working condition (the coil is energized), the electromagnet generates a stronger attractive force to force the moving assembly away from the stationary ring magnet, making the air port open.
  • the electromagnet of the present invention replaces the mechanical spring of the traditional solenoid valve with a non-linear magnetic spring, and applies a magnetic bistable structure to the solenoid valve. It only needs to give an instantaneous current signal to realize the long-term opening and closing of the valve, which greatly reduces the The energy consumption of the solenoid valve and the heating of the energized coil are reduced.
  • the invention utilizes the cooperation of two ring magnets and electromagnets to control the on-off of the valve port, which can minimize the size of the electromagnetic valve.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

一种双稳态电磁阀，包括进气管(1)、阀体(2)和出气管(3)；阀体(2)内设有圆柱空腔，圆柱空腔内从进气端到出气端方向顺次设置有固定环形磁铁(4)、移动组件(5)和电磁铁(6)；移动组件(5)可沿圆柱空腔轴向方向在固定环形磁铁(4)和电磁铁(6)之间移动。移动组件(5)可在固定环形磁铁(4)的吸引下封住阀口，使阀保持常闭状态；阀通电时，在电磁铁(6)的吸引下，移动组件(5)远离阀口(15)而贴向电磁铁(6)的圆筒铁芯(64)，阀开启。该电磁阀是一个双稳态结构，提高了电磁阀的可靠性，降低了电磁阀的能耗与尺寸，可用于微小电子系统。

Description

一种双稳态电磁阀 技术领域
本发明属于电磁阀设备领域，具体涉及一种双稳态电磁阀。
背景技术
电磁阀因其结构、工作原理简单而被广泛应用于各种流体控制系统中。传统电磁阀的结构如图1所示，主要包括阀体11、恢复弹簧12、电磁线圈13、顶杆14、阀口15以及衔铁16组成。未通电时，电磁阀的顶杆在弹簧力的作用下顶向锥形阀口，使阀口关闭。通电时，线圈产生的磁力吸引衔铁克服弹簧力向上运动，使阀口打开。持续通电使电磁阀保持开启状态，直到断电时电磁吸力消失，顶杆在弹簧力的作用下再次压紧阀口，使阀关闭。
现有的电磁阀采用机械弹簧作为恢复机构，若要使阀保持开启状态，必须给线圈持续通电，使顶杆能够始终压紧弹簧，从而让阀口通畅。然而，机械弹簧带来了两个主要缺陷。其一，随着电磁阀开启次数的增加，机械弹簧不可避免地会发生失效，主要表现为弹簧刚度的变化，弹簧刚度随其伸缩次数的增加而逐渐降低，这将导致顶杆压紧阀口的力减小，使阀口密封不牢靠。其二，能量消耗大。持续通电才能使阀保持开启状态，在很多场合，阀的开启时间较长，能耗的缺点更为显著，而且长时间通电会导致铜损严重，使阀产生严重的发热现象。此外，弹簧与顶杆的结构很不利于电磁阀的小型化，在空间尺寸要求较高的场合，传统电磁阀明显不适用。
发明内容
本发明采用了基于磁弹簧的双稳态结构恰好解决了上述的缺陷。本发明的技术方案如下：
本发明提供了一种双稳态电磁阀，其包括进气管、阀体和出气管；所述阀体内设有圆柱空腔，进气管和出气管分别连接圆柱空腔的两端；
所述圆柱空腔内从进气端到出气端方向顺次设置有固定环形磁铁、移动组件 和电磁铁；其中固定环形磁铁固定设置在进气端，其中心设有与进气管相通的内孔，电磁铁固定设置在出气端，移动组件可沿圆柱空腔轴向方向在固定环形磁铁和电磁铁之间移动；
所述移动组件包括相互连接的非导磁过流件和移动环形磁铁，其中，非导磁过流件在与固定环形磁铁紧密接触时，其顶面可封堵固定环形磁铁的内孔；非导磁过流件的侧面与圆柱空腔壁面间设有空隙；侧面上设有若干过流侧孔，非导磁过流件的底面设有与所述过流侧孔连通的通气孔，移动环形磁铁中心设有与所述通气孔连通的内孔；
所述电磁铁包括电磁铁端盖、密封盖、圆筒形铁芯和线圈，其中，圆筒形铁芯的中心设有与出气管相连的内孔；圆筒铁芯上设有一个密封盖定位凸肩，电磁铁端盖中心设有通孔，其安装在圆筒形铁芯朝向阀体内部的一端，密封盖套设在圆筒形铁芯上，且其抵接在圆筒形铁芯的密封盖定位凸肩处，密封盖与阀体圆柱密封连接；线圈绕在圆筒形铁芯上，且其位于电磁铁端盖和密封盖之间。
进一步的，所述圆柱空腔位于进气端侧设有固定环形磁铁安装孔，固定环形磁铁安装在此处且其内孔直径与进气管的内径相同。
进一步的，所述阀体设有一个方形接线孔，电磁铁的接线从此穿出，在最后装配完成以后，对该孔进行密封处理。
进一步的，所述非导磁过流件包括多个沿周向均匀分布的侧面，每个侧面上设有一个过流侧孔。
进一步的，所述移动环形磁铁的顶部设有一个非导磁过流件的安装槽，非导磁过流件安装在此槽中，两者固连成为一个整体。
进一步的，所述非导磁过流件的顶面设有一个密封涂层工艺孔，孔中涂有密封材料，增强阀关闭时的密封效果。
进一步的，电磁铁端盖是非导磁材料，可以是非导磁的金属、非金属。阀开启以后，在断电情况下，移动组件是靠圆筒铁芯的吸引力而稳定的。
与现有技术相比，本发明的有益效果包括：
本发明采用了移动组件可在固定环形磁铁的吸引下封住阀口，使阀保持常闭状态。阀通电时，在电磁铁的吸引下，移动组件远离阀口而贴向电磁铁的圆筒铁芯，阀开启。由于移动组件在上极限位置(靠近固定环形磁铁)和下极限位置(靠 近电磁铁的铁芯)都能保持稳定状态，故该结构是一个双稳态结构。因此，当移动组件贴上电磁铁的圆筒铁芯的时候即使断电，移动组件也将停留在圆筒铁芯上使阀仍然保持开启。而阀需要关闭时，只需给电磁铁施加一个反向电流，此时移动组件被排斥而回到初始位置，回到初始位置之后，移动组件处于另一个稳态，即在固定环形磁铁的吸引下即使电磁铁断电，移动组件也能停在初始位置，使阀再次关闭。因此，本发明不需要长时间的供电就能实现阀的长时间开启和关闭。而且，磁弹簧相较于机械弹簧有着变刚度的特性，即环形磁铁越靠近圆柱磁铁，它们之间的等效刚度越大，且当两者距离为0时其刚度远远大于机械弹簧，因此不容易发生失效。最后，环形磁铁取代了顶杆大大减小了电磁阀的尺寸，有利于电磁阀的小型化。
本发明针对传统电磁阀可靠性低、能耗大和难以小型化的问题，将两个环形磁铁与一个电磁铁结合组成双稳态结构，用磁弹簧取代了机械弹簧与顶杆的组合，不仅提高了电磁阀的可靠性，同时也降低了电磁阀的能耗与尺寸。在微小电子系统中，本发明具有极大的应用潜力。
附图说明
图1为传统电磁阀结构示意图；
图2为本发明双稳态电磁阀的外观图；
图3为本发明双稳态电磁阀的爆炸图；
图4为本发明双稳态电磁阀的阀体结构图；
图5为本发明移动组件安装与剖视图；
图6为本发明其他形式的移动组件示意图；
图7为本发明电磁铁示意图；
图8为本发明工作原理图。
图中，1-进气管，2-阀体，3-出气管，4-固定环形磁铁，5-移动组件，6-电磁铁，21-方形接线孔，22-固定环形磁铁安装孔，51-非导磁过流件，52-移动环形磁铁，511-密封涂层工艺孔，512-过流侧孔，521-非导磁过流件安装槽，61-电磁铁端盖，62-线圈，63-密封盖，64-圆筒形铁芯，641-密封盖定位凸肩，11阀体，12-恢复弹簧，13-电磁线圈，14-顶杆，15-阀口，16-衔铁。
具体实施方式
下面将结合本发明实施例中的附图，对本发明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发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，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，都属于本发明保护的范围。
需要说明，本发明实施例中所有方向性指示(诸如上、下、左、右、前、后……)仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
如图2和3所示，本实施例提出的双稳态电磁阀主要包括进气管1、阀体2和出气管3。阀体与进气管相连接(一体式或者固连)，在靠近进口处安装有一个固定环形磁铁4，一个包含环形磁铁的移动组件5可在阀体内的圆柱空腔中沿轴向移动。阀体的底部还留有一个电磁铁6的安装空间，出气管与电磁铁的内孔相连。
如图4所示，进气管1设在阀体的一端，靠近进气管处设有一个固定环形磁铁安装孔22，固定环形磁铁安装在此处且其内孔直径与进气管的内径相同，因此气体可经过进气管和固定环形磁铁进入阀体内腔。在阀体的末端(靠近出口处)设有一个方形接线孔21，电磁铁的接线将从此穿出，在最后装配完成以后，需要对该孔进行密封处理。
如图5所示，移动组件5由一个非导磁过流件51和一个移动环形磁铁52固连装配而成。非导磁过流件51的顶部设有一个密封涂层工艺孔511，可在此孔中涂上密封材料，以增强阀关闭时的密封效果；非导磁过流件51的两侧各设有一个过流侧孔512，两个过流侧孔与非导磁过流件底部的通气孔相交，形成了一个‘T’形的过流通道。移动环形磁铁52的顶部设有一个非导磁过流件的安装槽，非导磁过流件安装在此槽中，两者固连成为一个整体，即移动组件，它可在固定环形磁铁和电磁铁之间自由移动。非导磁过流件底部的通气孔与移动环形磁铁的内孔相通，因此，气体可从非导磁过流件的过流侧孔512流入，从移动环形磁铁的内孔中流出。
需要说明的是，本发明的移动组件结构形式不限于图5展示的一种(双过流 侧孔)，还可以有其他结构形式，如图6所示。图6(b)、图6(c)分别展示的是三过流侧孔和四过流侧孔的移动组件，过流侧孔的增加将有利于减小过流阻力和增加流量。
如图6和7所示，电磁铁6由电磁铁端盖61、一个密封盖63、一个圆筒形铁芯64和一个缠绕线圈62组成。圆筒形铁芯64起着束缚通电线圈62产生的磁力线以增强其对移动组件的磁力耦合的作用，其内孔则允许气流通道从其内部经过。圆筒铁芯64上设有一个密封盖定位凸肩641，电磁铁端盖61安装在圆筒形铁芯的一端，密封盖63安装在圆筒形铁芯64的密封盖定位凸肩641处，电磁铁端盖和密封盖与圆筒形铁芯皆为固连，最后在它们之间缠绕线圈62。
本发明电磁阀的工作原理图如图8所示，当阀处于非工作状态(线圈未通电)时，移动组件5受固定环形磁铁4的吸引而与其紧贴，从而堵住了气口(固定环形磁铁的内孔)，导致气流通道被阻断，阀处于常闭状态(图8a)。当阀处于工作状态(线圈通电)时，电磁铁产生一个更为强的吸引力迫使移动组件远离固定环形磁铁，使得气口打开。移动组件离开固定环形磁铁一段距离后会进入电磁铁的势阱内并快速贴紧电磁铁端盖，此时无需再通电，阀也能保持最大开启状态(图8b)。(由于距离的原因，在此处移动组件受到圆筒铁芯的吸引力大于来自固定环形磁铁的吸引力)气流经过进气管和固定环形磁铁进入阀体内腔后，经由移动组件的“T”形过流通道和圆筒铁芯，从出气管流出。当阀需要关闭时，只需给线圈通入反向电流，移动组件将受到来自电磁铁的排斥力向固定环形磁铁运动直至重新把气孔堵住，此时阀断电，移动环形磁铁也能单靠固定环形磁铁的吸引力而牢牢地堵住通气孔，使阀恢复常闭状态(图8c)。
本发明电磁铁用非线性磁弹簧取代传统电磁阀的机械弹簧，并将磁性双稳态结构运用于电磁阀当中，只需给瞬时电流信号即可实现阀的长时间开启和关闭，极大地减小了电磁阀的能耗以及通电线圈的发热。本发明利用两个环形磁铁和电磁铁的配合来控制阀口的通断，可以最大限度的缩小电磁阀尺寸。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对本发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明的保护范围应以所附权利要求为准。

Claims (7)

  1. 一种双稳态电磁阀，其特征在于，包括进气管、阀体和出气管；所述阀体内设有圆柱空腔，进气管和出气管分别连接圆柱空腔的两端；
    所述圆柱空腔内从进气端到出气端方向顺次设置有固定环形磁铁、移动组件和电磁铁；其中固定环形磁铁固定设置在进气端，其中心设有与进气管相通的内孔，电磁铁固定设置在出气端，移动组件可沿圆柱空腔轴向方向在固定环形磁铁和电磁铁之间移动；
    所述移动组件包括相互连接的非导磁过流件和移动环形磁铁，其中，非导磁过流件在与固定环形磁铁紧密接触时，其顶面可封堵固定环形磁铁的内孔；非导磁过流件的侧面与圆柱空腔壁面间设有空隙；侧面上设有若干过流侧孔，非导磁过流件的底面设有与所述过流侧孔连通的通气孔，移动环形磁铁中心设有与所述通气孔连通的内孔；
    所述电磁铁包括电磁铁端盖、密封盖、圆筒形铁芯和线圈，其中，圆筒形铁芯的中心设有与出气管相连的内孔；圆筒铁芯上设有一个密封盖定位凸肩，电磁铁端盖中心设有通孔，其安装在圆筒形铁芯朝向阀体内部的一端，密封盖套设在圆筒形铁芯上，且其抵接在圆筒形铁芯的密封盖定位凸肩处，密封盖与阀体圆柱密封连接；线圈绕在圆筒形铁芯上，且其位于电磁铁端盖和密封盖之间。
  2. 根据权利要求1所述的双稳态电磁阀，其特征在于，所述圆柱空腔位于进气端侧设有固定环形磁铁安装孔，固定环形磁铁安装在此处且其内孔直径与进气管的内径相同。
  3. 根据权利要求1所述的双稳态电磁阀，其特征在于，所述阀体设有一个方形接线孔，电磁铁的接线从此穿出，在最后装配完成以后，对该孔进行密封处理。
  4. 根据权利要求1所述的双稳态电磁阀，其特征在于，所述非导磁过流件包括多个沿周向均匀分布的侧面，每个侧面上设有一个过流侧孔。
  5. 根据权利要求1所述的双稳态电磁阀，其特征在于，所述移动环形磁铁的顶部设有一个非导磁过流件的安装槽，非导磁过流件安装在此槽中，两者固连成为一个整体。
  6. 根据权利要求1所述的双稳态电磁阀，其特征在于，所述非导磁过流件的顶面设有一个密封涂层工艺孔，孔中涂有密封材料，增强阀关闭时的密封效果。
  7. 根据权利要求1所述的双稳态电磁阀，其特征在于，所述电磁铁端盖采用非导磁材料。
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