WO2023019491A1 - Électrovanne bistable à faible consommation d'énergie - Google Patents

Électrovanne bistable à faible consommation d'énergie Download PDF

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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
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WO
WIPO (PCT)
Prior art keywords
coil
valve
valve body
electromagnet
iron core
Prior art date
Application number
PCT/CN2021/113391
Other languages
English (en)
Chinese (zh)
Inventor
韩冬
卢方
郑哲
高超
刘毅
龚国芳
杨华勇
Original Assignee
浙江大学
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 浙江大学 filed Critical 浙江大学
Priority to PCT/CN2021/113391 priority Critical patent/WO2023019491A1/fr
Publication of WO2023019491A1 publication Critical patent/WO2023019491A1/fr

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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
    • 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.

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

Abstract

L'invention concerne une électrovanne bistable à faible consommation d'énergie, comprenant un corps de vanne (2), un raccord d'entrée (1) qui est situé au niveau d'une extrémité d'entrée du corps de vanne (2), et un ensemble électroaimant (3) qui est situé au niveau d'une extrémité de sortie du corps de vanne (2). L'intérieur du corps de vanne (2) forme une structure bistable au moyen de la combinaison d'un aimant cylindrique fixe (4), d'un aimant annulaire (5) et de l'ensemble électroaimant (3). Un ressort magnétique est utilisé pour remplacer une combinaison d'un ressort mécanique et d'une tige d'éjecteur, et des bobines double (ou multiples) sont utilisées pour remplacer des configurations de bobine unique d'électrovannes classiques, ce qui permet non seulement d'améliorer la fiabilité d'une électrovanne et de réduire la consommation d'énergie et la taille de l'électrovanne, mais également de réduire efficacement la tension requise pour le fonctionnement de la vanne. Dans des microsystèmes électroniques, l'électrovanne bistable selon l'invention présente une grande adaptabilité et un potentiel d'application élevé.
PCT/CN2021/113391 2021-08-19 2021-08-19 Électrovanne bistable à faible consommation d'énergie WO2023019491A1 (fr)

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Application Number Priority Date Filing Date Title
PCT/CN2021/113391 WO2023019491A1 (fr) 2021-08-19 2021-08-19 Électrovanne bistable à faible consommation d'énergie

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Application Number Priority Date Filing Date Title
PCT/CN2021/113391 WO2023019491A1 (fr) 2021-08-19 2021-08-19 Électrovanne bistable à faible consommation d'énergie

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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 (fr) * 1999-05-17 2000-11-22 SCHROTT, Harald Vanne électromagnétique bistable
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 (fr) * 1999-05-17 2000-11-22 SCHROTT, Harald Vanne électromagnétique bistable
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 (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

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