WO2023019491A1 - 一种低功耗的双稳态电磁阀 - Google Patents

一种低功耗的双稳态电磁阀 Download PDF

Info

Publication number
WO2023019491A1
WO2023019491A1 PCT/CN2021/113391 CN2021113391W WO2023019491A1 WO 2023019491 A1 WO2023019491 A1 WO 2023019491A1 CN 2021113391 W CN2021113391 W CN 2021113391W WO 2023019491 A1 WO2023019491 A1 WO 2023019491A1
Authority
WO
WIPO (PCT)
Prior art keywords
coil
valve
valve body
electromagnet
iron core
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2021/113391
Other languages
English (en)
French (fr)
Inventor
韩冬
卢方
郑哲
高超
刘毅
龚国芳
杨华勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang University
Original Assignee
Zhejiang University
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 Zhejiang University filed Critical Zhejiang University
Priority to PCT/CN2021/113391 priority Critical patent/WO2023019491A1/zh
Publication of WO2023019491A1 publication Critical patent/WO2023019491A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

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
    • 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings 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
    • 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 with low power consumption.
  • Solenoid valve is widely used in various fluid control systems because of its simple structure and working principle.
  • the structure of a conventional solenoid valve is shown in FIG. 1 , which mainly includes a valve body 61 , a return spring 62 , an electromagnetic coil 63 , a push rod 64 , a valve port 65 and an armature 66 .
  • 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 coils of traditional solenoid valves usually use a single set of coils. If you want to increase the electromagnetic force, you can only use the method of increasing the energized voltage. In tiny electronic devices, the voltage is limited ( ⁇ 5V). Once the required voltage exceeds this limit, a booster circuit must be introduced, which will increase the size of the entire system, which is not conducive to the miniaturization of tiny electronic devices.
  • the present invention just solves the above defects by adopting a bistable structure based on a magnetic spring and changing the configuration of a traditional electromagnetic coil, and provides a low power consumption bistable solenoid valve.
  • the invention provides a bistable electromagnetic valve with low power consumption, which includes a valve body, an inlet joint located at the inlet end of the valve body, and an electromagnet assembly located at the outlet end of the valve body;
  • the middle part of the inlet joint is provided with an air inlet, and the end of the inlet joint facing the inside of the valve body is provided with a connecting ring;
  • the valve body has a front cavity and an inner cavity, and the front cavity and the inner cavity are separated by a flow layer;
  • the inner cavity is composed of a moving ring magnet movement cavity close to the flow layer and an electromagnet installation cavity close to the outlet;
  • the moving ring magnet is provided with a moving ring magnet in the moving cavity.
  • the moving ring magnet can move axially in the moving ring magnet moving cavity. When the moving ring magnet is against the flow layer, it can completely block the flow hole; the electromagnet The assembly is installed in the electromagnet installation cavity;
  • the electromagnet assembly includes an electromagnet end cover, a sealing end cover, a cylindrical iron core and a coil, wherein the center of the cylindrical iron core is provided with an air outlet; the cylindrical iron core is provided with a sealing cover positioning protrusion There is a through hole in the center of the electromagnet end cover, which is installed on the end of the cylindrical iron core facing the inside of the valve body.
  • the sealing end cover is sleeved on the cylindrical iron core, and it abuts against the cylindrical iron core.
  • the sealing cover is located at the shoulder, and the sealing end cover is sealed with the valve body; the coil is wound on the cylindrical iron core, and it is located between the electromagnet end cover and the sealing end cover.
  • the outer diameter of the connecting ring matches the inner diameter of the front cavity, and the inlet joint is sealed and installed at the inlet end of the valve body through the connecting ring.
  • valve body is provided with a rectangular groove near the outlet end, through which the wiring of the coil passes, and after the final assembly is completed, the hole is sealed.
  • flow holes there are multiple flow holes, which are typical but not limited.
  • the number of flow holes can be selected as 2, 3, 4, 5, 6, etc.;
  • the flow layer is evenly distributed in the circumferential direction.
  • the shape of the flow hole can be fan-shaped, square, circular, etc., as long as the flow hole can be blocked by the moving ring magnet and can provide sufficient flow when the valve is opened.
  • the shape selection is preferably a shape that is easy to process.
  • the coil is composed of multi-layer coils, the outer coil is sheathed on the periphery of the inner coil, and the innermost coil is sheathed on the cylindrical iron core; the coils of each layer are connected in parallel.
  • the electromagnet end cover is made of non-magnetic conductive material.
  • the beneficial effects of the present invention include:
  • the moving ring magnet of the present invention can seal the valve port by blocking the flow hole, so that the valve can be kept in a normally closed state.
  • the valve When the valve is energized, under the attraction of the electromagnet assembly, the moving ring magnet is away from the valve port and attached to the end cover of the electromagnet, the front cavity and the inner cavity are connected, and the valve is opened. Since the moving ring magnet can maintain a stable state at the upper limit position (close to the fixed cylindrical magnet) and the lower limit position (close to the cylindrical iron core), the structure is a bistable structure.
  • the present invention only needs instantaneous (tens of milliseconds) power supply to realize long-term opening and closing of the valve, and the power consumption is extremely low.
  • 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 present invention replaces the single-set coil configuration of the traditional solenoid valve with parallel double-set coils, effectively reducing the energizing voltage required by the valve, which greatly improves the adaptability of the small solenoid valve in tiny electronic systems.
  • the present invention combines a fixed cylindrical magnet, a moving ring magnet and an electromagnet assembly to form a bistable structure, and replaces it with a magnetic spring
  • the combination of mechanical spring and ejector rod is replaced by double (or multiple) coils instead of the single coil configuration of the traditional solenoid valve, which not only improves the reliability of the solenoid valve, reduces the energy consumption and size of the solenoid valve, but also effectively The voltage required for valve operation is reduced.
  • the invention has great adaptability and 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 low power consumption of the present invention
  • Fig. 3 is the explosion diagram of electromagnetic valve of the present invention.
  • Fig. 4 is a structural diagram of the inlet joint of the present invention.
  • Fig. 5 is a valve body structure and a sectional view of the present invention.
  • Fig. 6 is an exploded view of the electromagnet assembly of the present invention.
  • Fig. 7 is the energization diagram of a single group of coils and a double group of coils
  • Fig. 8 is a working principle diagram of the present invention.
  • the low power consumption bistable solenoid valve proposed in this embodiment mainly includes a valve body 2, an inlet joint 1 at the inlet end of the valve body and an electromagnet assembly 3 at the outlet end of the valve body.
  • an air inlet is provided in the middle of the inlet joint 1, and a connecting ring 11 is provided at the end of the inlet joint toward the inside of the valve body;
  • the valve body has a front cavity and an inner cavity, and the front cavity and the inner cavity Separated by the flow layer 21;
  • the flow layer 21 is provided with a flow hole 211 connecting the front cavity and the inner cavity, the end face of the connecting ring 11 is in contact with the flow layer 21, and the inner ring diameter of the connecting ring 11 is smaller Large, the space wrapped by the inner ring of the connecting ring constitutes the front cavity, because the diameter of the inner ring of the connecting ring 11 is relatively large, it does not block the flow hole;
  • the middle part of the flow layer 21 is provided with a fixed cylindrical magnet mounting hole 212, and the installation A fixed cylindrical magnet 4 is arranged in the hole;
  • the inner cavity is composed of a moving ring magnet movement cavity 22 close to the flow layer 21 and an electromagnet installation cavity 23 close to the outlet end;
  • a moving ring magnet 5 is arranged in the moving ring magnet moving cavity 22, and the middle part of the moving ring magnet 5 is hollow, and it can move axially in the moving ring magnet moving cavity, and the moving ring magnet 5 abuts against the When the flow layer 21, the flow hole 211 can be completely blocked; the electromagnet assembly 3 is installed in the electromagnet installation cavity 23;
  • described electromagnet assembly 3 comprises electromagnet end cover 31, sealing end cover 35, cylindrical iron core 34 and coil, wherein, the center of cylindrical iron core is provided with air outlet;
  • the iron core is provided with a sealing cover positioning shoulder 341, and the center of the electromagnet end cover 31 is provided with a through hole, which is installed on the end of the cylindrical iron core facing the inside of the valve body, and the sealing end cover 35 is sleeved on the cylindrical iron. core, and it abuts against the positioning shoulder of the sealing cover of the cylindrical iron core, and the sealing end cover is sealed with the valve body;
  • the coil is wound on the cylindrical iron core, and it is located between the electromagnet end cover and the sealing end between covers.
  • the outer diameter of the connecting ring matches the inner diameter of the front cavity, and the inlet joint is sealed and installed at the inlet end of the valve body through the connecting ring.
  • valve body is provided with a rectangular groove 24 near the outlet end, through which the wiring of the coil passes, and after the final assembly is completed, the hole is sealed.
  • the flow holes are evenly arranged along the circumference of the flow layer 21 .
  • the flow holes are fan-shaped flow holes, and there are four in total.
  • the coil consists of multi-layer coils, the outer coil is sheathed on the periphery of the inner coil, and the innermost coil is sheathed on the cylindrical iron core; the coils of each layer are connected in parallel.
  • the coil includes an outer coil and an inner coil, and the inner coil is sleeved between the outer coil and the cylindrical iron core; the outer coil and the inner coil are connected in parallel.
  • the double-set coil configuration adopted by the present invention can effectively reduce the operating voltage of the valve without weakening the valve performance.
  • the coil energization diagram of a traditional solenoid valve is shown in Figure 7(a). Assuming that the power supply is a constant voltage source, its voltage is U. According to the theory of electromagnetism, the expression of the magnetic field strength H of the magnetic field generated by the DC energized coil is as follows:
  • N is the number of turns of the electrified coil
  • I is the current of the energized coil, the unit is A;
  • Le is the effective magnetic path length of the test sample, in m.
  • Fig. 7 (b) is the energization diagram of the double-set coil proposed by the present invention.
  • the current passing through the inner and outer coils of the double coil is:
  • the energizing voltage of the double coil is only half of the energizing voltage of the single coil. Because in small electronic devices, button batteries are usually used as the power supply, and its voltage is small ( ⁇ 5V). If you want to use a higher voltage, you usually need to use a booster circuit, and adding a booster circuit will increase the size of the entire system. .
  • the solenoid valve using double sets of coils proposed by the present invention can perfectly solve this problem, and the required voltage can be reduced by half only by changing the coil configuration of the traditional solenoid valve.
  • the electromagnet coil can also have more sets, such as 3 sets of coils and multiple sets of coils, the voltage will be further reduced, but as the voltage decreases, the total current will continue to increase, considering the copper wire The current density is limited, and the number of coil groups cannot be increased indefinitely.
  • 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 ring magnet 5 is attracted by the fixed cylindrical magnet 4 and approaches it, thereby blocking the valve in the valve body.
  • the fan-shaped flow hole of the valve causes the airflow channel to be blocked and the valve is in a normally closed state ( Figure 8a).
  • the electromagnet When the valve is in the working state (the coil is energized), the electromagnet generates a stronger attractive force to force the moving ring magnet away from the fixed cylindrical magnet, so that the fan-shaped flow hole is opened.
  • the invention can improve the service life of the solenoid valve, reduce energy consumption and minimize the volume of the solenoid valve. It has great application prospects in small fluid control systems with large space constraints.
  • the use of parallel double sets of coils effectively reduces the energization voltage required by the valve, which will improve the adaptability of small solenoid valves in tiny electronic systems.
  • 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 replaces the single coil of the traditional electromagnetic valve with parallel double coils, which can effectively reduce the energizing voltage required by the valve, which will greatly expand the application of the small electromagnetic valve in the micro electronic system.

Landscapes

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

Abstract

一种低功耗的双稳态电磁阀，其包括阀体（2）、位于阀体（2）进口端的进口接头（1）和位于阀体（2）出口端的电磁铁装配体（3）；阀体（2）内部通过一个固定圆柱磁铁（4）、一个环形磁铁（5）与一个电磁铁装配体（3）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，用双组（或多组）线圈取代传统电磁阀的单组线圈配置，不仅提高了电磁阀的可靠性、降低了电磁阀的能耗与尺寸，还有效地降低了阀工作所需的电压。在微小电子系统中，这种双稳态电磁阀具有极大的适应性和应用潜力。

Description

一种低功耗的双稳态电磁阀 技术领域
本发明属于电磁阀设备领域，具体涉及一种低功耗的双稳态电磁阀。
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61、恢复弹簧62、电磁线圈63、顶杆64、阀口65以及衔铁66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，传统电磁阀的线圈通常采用的是单组线圈，如要提升电磁力，只能采用增大通电电压的方法，而在微小电子设备当中，电压是受限制的(<5V)，阀所需电压一旦超过这个限制，就必须引入升压电路，这将造成整个系统的体积增大，不利于微小电子设备的小型化。
发明内容
本发明通过采用基于磁弹簧的双稳态结构以及改变传统电磁线圈的配置恰好解决了上述的缺陷，提供了一种低功耗的双稳态电磁阀。
本发明的技术方案如下：
本发明提供了一种低功耗的双稳态电磁阀，其包括阀体、位于阀体进口端的进口接头和位于阀体出口端的电磁铁装配体；
所述进口接头中部设有进气孔，进口接头朝向阀体内侧的一端设有连接环；所述阀体内具有前腔和内腔，前腔和内腔由过流层隔开；其中过流层上设有连通前腔和内腔的过流孔，连接环的端面与过流层抵接，且连接环不封堵过流孔；
过流层中部设有固定圆柱磁铁安装孔，安装孔内设置有固定圆柱磁铁；所述内腔由靠近过流层的移动环形磁铁运动腔和靠近出口端的电磁铁安装腔组成；
所述移动环形磁铁运动腔内设置有移动环形磁铁，移动环形磁铁可在移动环形磁铁运动腔内沿轴向移动，移动环形磁铁抵靠过流层时，可完全封堵过流孔；电磁铁装配体安装在电磁铁安装腔内；
所述电磁铁装配体包括电磁铁端盖、密封端盖、圆筒形铁芯和线圈，其中，圆筒形铁芯的中心设有出气孔；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，密封端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，密封端盖与阀体密封连接；线圈绕在圆筒形铁芯上，且其位于电磁铁端盖和密封端盖之间。
进一步的，连接环外径与前腔内径匹配，通过所述连接环将进口接头密封安装在阀体进口端。
进一步的，所述阀体靠出口端设有一个矩形槽，线圈的接线从此穿出，在最后装配完成以后，对该孔进行密封处理。
进一步的，所述过流孔有多个，典型而非限定的，所述过流孔的数量可以选择为2个、3个、4个、5个、6个等等；过流孔沿过流层的周向均匀布置。
进一步的，所述过流孔的形状可以为扇形、方形、圆形等等，只要过流孔能被移动环形磁铁抵靠时封堵，并在阀开启时能提供足够的流量即可，在形状选择上优选为便于加工的形状。
进一步的，所述线圈包括多层线圈组成，外层线圈套设在内层线圈外围，最内层线圈套设在圆筒形铁芯上；各层线圈并联连接。
进一步的，所述电磁铁端盖是非导磁材料。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：
本发明移动环形磁铁在固定圆柱磁铁的吸引下可通过封堵过流孔从而封住阀口，使阀保持常闭状态。阀通电时，在电磁铁装配体的吸引下，移动环形磁铁远离阀口而贴向电磁铁端盖，前腔和内腔连通，阀开启。由于移动环形磁铁在上极限位置(靠近固定圆柱磁铁)和下极限位置(靠近圆筒形铁芯)都能保持稳定状态，故该结构是一个双稳态结构。因此，当移动环形磁铁贴上电磁铁装配体的时候即使断电，其也将在圆筒铁芯的吸引下停留在电磁铁端盖上使阀仍然保持开启。而阀需要关闭时，只需给电磁铁装配体施加一个瞬时的反向电流，此时移动环形磁铁被排斥而回到初始位置封堵过流孔，回到初始位置之后，移动环形磁铁处于另一个稳态，即在固定圆柱磁铁的吸引下即使电磁铁断电，移动环形磁铁也能停在初始位置，使阀再次关闭。因此，本发明只需瞬时(几十毫秒)供电就能实现阀的长时间开启和关闭，功耗极低。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。此外，本发明采用并联的双组线圈取代了传统电磁阀的单组线圈配置有效地降低了阀所需的通电电压，这极大地提高了小型电磁阀在微小电子系统中的适应性。
本发明针对传统电磁阀可靠性低、能耗大和在微小电子设备中适应性差的问题，将一个固定圆柱磁铁、一个移动环形磁铁与一个电磁铁装配体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，用双组(或多组)线圈取代传统电磁阀的单组线圈配置，不仅提高了电磁阀的可靠性、降低了电磁阀的能耗与尺寸，还有效地降低了阀工作所需的电压。在微小电子系统中，本发明具有极大的适应性和应用潜力。
附图说明
图1为传统电磁阀结构示意图；
图2为本发明低功耗的双稳态电磁阀的外观图；
图3为本发明电磁阀的爆炸图；
图4为本发明进口接头的结构图；
图5为本发明阀体结构与剖视图；
图6为本发明电磁铁装配体的爆炸图；
图7为单组线圈与双组线圈通电图；
图8为本发明工作原理图。
图中，1-进口接头，2-阀体，3-电磁铁装配体，4-固定圆柱磁铁，5-移动环形磁铁，11-连接环，21-过流层211-过流孔，212-固定圆柱磁铁安装孔，22-移动环形磁铁运动腔，23-电磁铁安装腔，24-矩形槽，31-电磁铁端盖，32-外层线圈，33-内层线圈，34-圆筒形铁芯，35-密封端盖，341-密封盖定位凸肩，61阀体，62-恢复弹簧，63-电磁线圈，64-顶杆，65-阀口，66-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，本实施例提出的低功耗的双稳态电磁阀主要包括阀体2、位于阀体进口端的进口接头1和位于阀体出口端的电磁铁装配体3。
如图4和5所示，所述进口接头1中部设有进气孔，进口接头朝向阀体内侧的一端设有连接环11；所述阀体内具有前腔和内腔，前腔和内腔由过流层21隔开；其中过流层21上设有连通前腔和内腔的过流孔211，连接环11的端面与过流层21抵接，且连接环11的内圈直径较大，连接环的内圈所包裹的空间即构成了前腔，因连接环11内圈直径较大，其不封堵过流孔；过流层21中部设有固定圆柱磁铁安装孔212，安装孔内设置有固定圆柱磁铁4；所述内腔由靠近过流层21的移动环形磁铁运动腔22和靠近出口端的电磁铁安装腔23组成；
如图5所示，所述移动环形磁铁运动腔22内设置有移动环形磁铁5，移动环形磁铁5中部中空，其可在移动环形磁铁运动腔内沿轴向移动，移动环形磁铁5抵靠过流层21时，可完全封堵过流孔211；电磁铁装配体3安装在电磁铁安装腔23内；
如图6所示，所述电磁铁装配体3包括电磁铁端盖31、密封端盖35、圆筒形铁芯34和线圈，其中，圆筒形铁芯的中心设有出气孔；圆筒铁芯上设有一个密封盖定位凸肩341，电磁铁端盖31中心设有通孔，其安装在圆筒形铁芯朝向阀体内部的一端，密封端盖35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，密封端盖与阀体密封连接；线圈绕在圆筒形铁芯上，且其位于电磁铁端盖和密封端盖之间。
在本发明的一个具体实施例中，连接环外径与前腔内径匹配，通过所述连接环将进口接头密封安装在阀体进口端。
在本发明的一个具体实施例中，所述阀体靠出口端设有一个矩形槽24，线圈的接线从此穿出，在最后装配完成以后，对该孔进行密封处理。
在本发明的一个具体实施例中，所述过流孔沿过流层21的周向均匀布置。所述过流孔为扇形过流孔，共有4个。
所述线圈包括多层线圈组成，外层线圈套设在内层线圈外围，最内层线圈套设在圆筒形铁芯上；各层线圈并联连接。在本发明的一个具体实施例中，所述线圈包括外层线圈和内层线圈，内层线圈套设在外层线圈和圆筒形铁芯之间；外层线圈和内层线圈并联连接。
相比于传统电磁阀的单组线圈配置，本发明采用的双组线圈配置可以在不削弱阀性能的情况下有效地降低阀的工作电压。传统电磁阀的线圈通电图如图7(a)所示，假设电源是恒定的电压源，其电压为U，根据电磁学理论，直流通电线圈产生的磁场的磁场强度H的表达式如下为：
Figure PCTCN2021113391-appb-000001
式中，N为通电线圈的匝数；
I为通电线圈的电流，单位为A；
Le为测试样品的有效磁路长度，单位为m。
因此，直流通电线圈的磁场强度H与安匝数N·I成正比。图7(b)是本发明提出的双组线圈的通电图，与图7(a)中的单组线圈相比，双组线圈的电源也为U，且双组线圈的总匝数N 2(内层线圈匝数N 内与外层线圈匝数N 外之和)与单组线圈的匝数N 1相同。即N 1＝N 2＝N 内+N 外，并且N 内＝N 外。若单组线圈与双组线圈采用相同电阻率的铜线，则单组线圈的电阻R 1等于双组线圈内外线圈 的电阻之和，即R 1＝R 2＝R 内+R 外，且R 内＝R 外，则R 1＝R 2＝2R 内＝2R 外。因此，通过单组线圈中的电流I 1为：
Figure PCTCN2021113391-appb-000002
通过双组线圈内层和外层线圈中的电流为：
Figure PCTCN2021113391-appb-000003
联立上面几个式子，可得：I 1＝0.5I 内＝0.5I 外
因此，在相同电压下，双组线圈并联产生磁场的磁场强度H 2＝2H 1。反过来说，在产生相同磁场强度的磁场条件下，双组线圈的通电电压仅为单组线圈通电电压的一半。由于在小型电子设备当中，通常采用纽扣电池作为电源，其电压较小(<5V)，若要使用较高的电压，通常需要采用升压电路，而加入升压电路会增大整个系统的体积。本发明所提出的采用双组线圈的电磁阀可完美的解决这一问题，仅改变传统电磁阀的线圈配置，即可将所需电压降低一半。
需要说明的是，电磁铁线圈还可以有更多的组数，如3组线圈和多组线圈，电压将进一步降低，但随着电压降低，总的电流将会持续升高，考虑到铜线的电流密度限制，线圈的组数不能无限增加。
本发明该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，移动环形磁铁5受固定圆柱磁铁4的吸引而与其靠近，从而堵住了阀体中的扇形过流孔，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环形磁铁远离固定圆柱磁铁，使得扇形过流孔打开。移动环形磁铁离开固定圆柱磁铁一段距离后会进入电磁铁装配体3的势阱内并快速贴紧电磁铁端盖31，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)，气流经过扇形过流孔进入阀体内腔后，经由移动环形磁铁的内孔、电磁铁端盖的中部通孔和圆筒形铁芯34，从出口流出。当阀需要关闭时，只需给线圈通入反向电流，移动环形磁铁5将受到来自电磁铁装配体的排斥力向固定圆柱磁铁4运动直至重新把扇形过流孔堵住，此时阀断电，移动环形磁铁也能单靠固定圆柱磁铁的吸引力而牢牢地堵住阀口(扇形通气孔)，使阀恢复常闭状态(图8c)。
本发明能提高电磁阀的使用寿命，减少能耗并最大限度地缩小电磁阀的体积。在空间尺寸限制较大的小型流体控制系统中有非常大的应用前景。采用并联的双组线圈有效地降低了阀所需的通电电压，这将提高小型电磁阀在微小电子系统中的适应性。
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。本发明利用并联的双组线圈取代传统电磁阀的单组线圈，可有效地减小阀所需的通电电压，这将极大地拓展小型电磁阀在微小电子系统中的应用。
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. 一种低功耗的双稳态电磁阀，其特征在于，包括阀体、位于阀体进口端的进口接头和位于阀体出口端的电磁铁装配体；
    所述进口接头中部设有进气孔，进口接头朝向阀体内侧的一端设有连接环；所述阀体内具有前腔和内腔，前腔和内腔由过流层隔开；其中过流层上设有连通前腔和内腔的过流孔，连接环的端面与过流层抵接，且连接环不封堵过流孔；
    过流层中部设有固定圆柱磁铁安装孔，安装孔内设置有固定圆柱磁铁；所述内腔由靠近过流层的移动环形磁铁运动腔和靠近出口端的电磁铁安装腔组成；
    所述移动环形磁铁运动腔内设置有移动环形磁铁，移动环形磁铁可在移动环形磁铁运动腔内沿轴向移动，移动环形磁铁抵靠过流层时，可完全封堵过流孔；电磁铁装配体安装在电磁铁安装腔内；
    所述电磁铁装配体包括电磁铁端盖、密封端盖、圆筒形铁芯和线圈，其中，圆筒形铁芯的中心设有出气孔；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，密封端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，密封端盖与阀体密封连接；线圈绕在圆筒形铁芯上，且其位于电磁铁端盖和密封端盖之间。
  2. 根据权利要求1所述低功耗的双稳态电磁阀，其特征在于，连接环外径与前腔内径匹配，通过所述连接环将进口接头密封安装在阀体进口端。
  3. 根据权利要求1所述低功耗的双稳态电磁阀，其特征在于，所述阀体靠出口端设有一个矩形槽，线圈的接线从此穿出，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所述低功耗的双稳态电磁阀，其特征在于，所述过流孔有多个，沿过流层的周向均匀布置。
  5. 根据权利要求4所述低功耗的双稳态电磁阀，其特征在于，所述过流孔为扇形过流孔。
  6. 根据权利要求1所述低功耗的双稳态电磁阀，其特征在于，所述线圈包括多层线圈组成，外层线圈套设在内层线圈外围，最内层线圈套设在圆筒形铁芯上；各层线圈并联连接。
  7. 根据权利要求1所述低功耗的双稳态电磁阀，其特征在于，所述电磁铁端 盖采用非导磁材料。
PCT/CN2021/113391 2021-08-19 2021-08-19 一种低功耗的双稳态电磁阀 Ceased WO2023019491A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2021/113391 WO2023019491A1 (zh) 2021-08-19 2021-08-19 一种低功耗的双稳态电磁阀

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2021/113391 WO2023019491A1 (zh) 2021-08-19 2021-08-19 一种低功耗的双稳态电磁阀

Publications (1)

Publication Number Publication Date
WO2023019491A1 true WO2023019491A1 (zh) 2023-02-23

Family

ID=85239394

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/113391 Ceased WO2023019491A1 (zh) 2021-08-19 2021-08-19 一种低功耗的双稳态电磁阀

Country Status (1)

Country Link
WO (1) WO2023019491A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116220926A (zh) * 2023-03-24 2023-06-06 泰兴市苏林机械有限公司 燃气调压阀与电磁阀组合控制总成及多燃料通机动力
CN116982542A (zh) * 2023-09-27 2023-11-03 青岛地质工程勘察院(青岛地质勘查开发局) 一种高陡岩质边坡绿化防护结构及方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85201056U (zh) * 1985-04-01 1986-02-26 南京大学 双稳态电磁阀
EP1054200A2 (de) * 1999-05-17 2000-11-22 SCHROTT, Harald Bistabiles elektromagnetisches Ventil
EP1217272A1 (fr) * 2000-12-19 2002-06-26 Fluid Automation Systems S.A. Electrovanne
CN101424348A (zh) * 2007-10-29 2009-05-06 浙江三花制冷集团有限公司 双稳态电磁阀
CN102075058A (zh) * 2010-12-31 2011-05-25 卢小平 一种电磁装置及其应用
CN206478247U (zh) * 2017-02-23 2017-09-08 湖南财经工业职业技术学院 电磁阀
US20190249792A1 (en) * 2018-02-12 2019-08-15 Rausch & Pausch Gmbh Magnetic valve and method for manufacturing a magnetic valve

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85201056U (zh) * 1985-04-01 1986-02-26 南京大学 双稳态电磁阀
EP1054200A2 (de) * 1999-05-17 2000-11-22 SCHROTT, Harald Bistabiles elektromagnetisches Ventil
EP1217272A1 (fr) * 2000-12-19 2002-06-26 Fluid Automation Systems S.A. Electrovanne
CN101424348A (zh) * 2007-10-29 2009-05-06 浙江三花制冷集团有限公司 双稳态电磁阀
CN102075058A (zh) * 2010-12-31 2011-05-25 卢小平 一种电磁装置及其应用
CN206478247U (zh) * 2017-02-23 2017-09-08 湖南财经工业职业技术学院 电磁阀
US20190249792A1 (en) * 2018-02-12 2019-08-15 Rausch & Pausch Gmbh Magnetic valve and method for manufacturing a magnetic valve

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116220926A (zh) * 2023-03-24 2023-06-06 泰兴市苏林机械有限公司 燃气调压阀与电磁阀组合控制总成及多燃料通机动力
CN116982542A (zh) * 2023-09-27 2023-11-03 青岛地质工程勘察院(青岛地质勘查开发局) 一种高陡岩质边坡绿化防护结构及方法
CN116982542B (zh) * 2023-09-27 2023-12-15 青岛地质工程勘察院(青岛地质勘查开发局) 一种高陡岩质边坡绿化防护结构及方法

Similar Documents

Publication Publication Date Title
CN113669462B (zh) 一种低功耗的双稳态电磁阀
JP5979790B2 (ja) パイロット式電磁弁
CN101709806B (zh) 一种微型自锁电磁阀
US6405757B1 (en) Low power solenoid valve assembly
CN114110205B (zh) 一种双稳态电磁三通阀
CN107387844B (zh) 一种无摩擦比例阀磁路结构
CN113669461A (zh) 一种双稳态电磁阀
EP2171731B1 (en) A magnetic actuator and a valve comprising such an actuator
CN106979371B (zh) 一种电磁阀
CN106763991B (zh) 一种微型电磁式比例流量调节阀
CN105042160A (zh) 一种微小电磁阀推力器
CN106895194B (zh) 小型高压自锁阀
US6290203B1 (en) Pilot operated valve assembly
CN113324044B (zh) 一种电磁阀
CN108916454B (zh) 大行程衔铁密封型节能电磁阀
CN114001178B (zh) 具有双稳态结构的瓶盖一体电磁双阀
CN107246497B (zh) 自保持式电磁阀
CN215110538U (zh) 一种新型电磁阀
WO2023019492A1 (zh) 一种双稳态电磁阀
CN101551024A (zh) 一体结构的双稳态电磁阀
CN201117554Y (zh) 多功能水流开关
JP3426160B2 (ja) 流量調節弁
US5597013A (en) Electromagnetic control ball valve
CN102148085B (zh) 一种采用电磁装置控制行程和速度的方法及电磁装置
CN212429907U (zh) 阀执行机构和调节阀

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21953738

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21953738

Country of ref document: EP

Kind code of ref document: A1