CN114110205B - Bistable electromagnetic three-way valve - Google Patents
Bistable electromagnetic three-way valve Download PDFInfo
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- CN114110205B CN114110205B CN202111241177.7A CN202111241177A CN114110205B CN 114110205 B CN114110205 B CN 114110205B CN 202111241177 A CN202111241177 A CN 202111241177A CN 114110205 B CN114110205 B CN 114110205B
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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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
- F16K11/044—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with movable valve members positioned between valve seats
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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
- F16K31/0603—Multiple-way valves
- F16K31/0624—Lift valves
- F16K31/0627—Lift valves with movable valve member positioned between seats
Abstract
The invention discloses a bistable electromagnetic three-way valve. The bistable electromagnetic three-way valve comprises an electromagnet core, an electromagnet coil, a valve body and an inlet valve pipe. The valve body is internally provided with a fixed annular magnet, a movable cylindrical magnet and a movable annular magnet, and the working states of the valve port and the valve are switched by the movement of the two movable magnets. The electromagnetic valve is in a bi-stable state structure formed by combining an electromagnet core, a fixed annular magnet, a movable cylindrical magnet and a movable annular magnet, and can maintain the state without extra energy consumption under the stable state. Two removal magnets are intercoupled, coordinated motion under the drive of electro-magnet, have banned the combination of mechanical spring with the ejector pin with the magnetic spring, have not only improved electromagnetism three-way valve's reliability, simultaneously also greatly reduced electromagnetism three-way valve's energy consumption and size. In addition, the present invention implements two modes of operation using one structure. The invention has great application potential in a tiny electronic system.
Description
Technical Field
The invention belongs to the field of design of electromagnetic three-way valves, and particularly relates to a bistable electromagnetic three-way valve.
Background
The electromagnetic three-way valve is an electromagnetic valve with three valve ports, and has simple structure and working principle, so that the electromagnetic three-way valve is widely applied to various fluid control systems. The structure of a traditional electromagnetic three-way valve is shown in figure 1 and mainly comprises a valve body, a recovery spring, an electromagnetic coil, a mandril, a valve port, an armature and other components. When the power is not on, the ejector rod of the electromagnetic valve pushes the upper conical valve port under the action of the spring force, so that the upper valve port is closed, and the three-way valve is communicated with the lower path. When the power is on, the magnetic force generated by the coil attracts the armature to move downwards against the spring force, so that the upper valve port is opened. The electromagnetic valve keeps an open state on the upper path by continuous energization until the electromagnetic suction force disappears when the power is off, and the push rod compresses the upper valve port again under the action of the spring force to seal the upper path and communicate the lower path.
The existing electromagnetic three-way valve adopts a mechanical spring as a recovery device, which brings two defects, one of which is that the energy consumption is large, a coil generates heat seriously, the electromagnetic three-way valve inevitably has a working position and can be maintained only by keeping electrifying, the energy consumption defect is obvious, and the copper loss is increased after the electromagnetic three-way valve is electrified for a long time, so that the coil generates heat. Secondly, the mechanical spring has a certain fatigue limit, and the mechanical spring is easy to lose efficacy along with the increase of switching times, which is mainly represented by the change of the rigidity of the spring, and the rigidity is reduced along with the increase of the expansion times, so that the force for pressing the valve port is reduced, and the sealing performance of the valve port is poor. The use of the ejector rod limits the miniaturization of the electromagnetic three-way valve and is not suitable for a system with limited space and compact requirement. In addition, the structure of the electromagnetic three-way valve is fixed after the electromagnetic three-way valve is manufactured, and only one passage switching mode can be realized.
Disclosure of Invention
The invention adopts the bistable structure based on the magnetic spring to just solve the defects, and realizes the switching and the switching of two different access modes by different magnet installation methods.
The technical scheme of the invention is as follows:
the invention provides a bistable electromagnetic three-way valve, which comprises a valve body consisting of an upper valve body, a middle valve body and a lower valve body, wherein the side edge of the middle valve body is provided with an inlet valve pipe, the bottom of the lower valve body is provided with a valve port A, an electromagnet coil is wound on the upper valve body, an electromagnet core is installed in the electromagnet coil, the center of the electromagnet core is perforated, one section of the electromagnet core extends out of the upper valve body, and the extending end of the electromagnet core is used as a valve port C of the valve body;
the bottom of the upper valve body is provided with a central packaging hole, and a first central overflowing hole communicated with the valve port C is arranged in the central packaging hole;
the upper part of the middle valve body is provided with a movable cylindrical magnet hole and a movable annular magnet hole which are arranged along the axial direction of the valve body; the movable cylindrical magnet hole and the movable annular magnet hole are separated from each other through the annular wall surface; the top of the circular wall surface is arranged in the central packaging hole and is attached to the inner wall surface of the central packaging hole; the bottom of the movable cylindrical magnet hole is communicated with the fixed annular magnet mounting hole through a second central overflowing hole, a fixed annular magnet is arranged in the fixed annular magnet mounting hole, a through hole is formed in the center of the fixed annular magnet, the second central overflowing hole is communicated with the valve cavity of the lower valve body through the through hole, and the bottom of the movable annular magnet hole is communicated with the valve cavity of the lower valve body through surrounding overflowing holes;
a valve cavity is arranged in the lower valve body and is communicated with the valve port A;
the movable cylindrical magnet hole is internally provided with a movable cylindrical magnet, the movable annular magnet hole is internally provided with a movable annular magnet, the movable cylindrical magnet and the movable annular magnet can move up and down in the respective holes along the axial direction of the valve body, and the movable cylindrical magnet and the movable annular magnet can respectively block the second central overflowing hole and the surrounding overflowing holes when being positioned at respective lower stable positions; when the movable annular magnet is located at the upper stable position, the inlet valve pipe can be communicated with the surrounding overflowing holes, and when the movable cylindrical magnet is located at the upper stable position, the first central overflowing hole is not blocked.
As a preferred scheme of the invention, the side of the movable cylindrical magnet is notched, the side of the bottom of the first central overflowing hole is notched, and the notched position is the position of the side notch of the movable cylindrical magnet; when the moving cylindrical magnet is located at the top position of the stroke, the first central overflowing hole is communicated with the moving cylindrical magnet hole through the notch and the cut.
Optionally, the moving cylindrical magnet and the moving annular magnet are installed in the same direction of magnetic poles.
Optionally, the moving cylindrical magnet and the moving annular magnet are installed in opposite directions according to the magnetic pole direction.
The invention can realize the long-time opening and closing of the valve without long-time power supply. Second, magnetic springs have a variable stiffness characteristic compared to mechanical springs, i.e., the closer the moving magnet is to the fixed magnet, the greater the equivalent stiffness between them, and thus failure is less likely to occur. And the movable magnet replaces an ejector rod, so that the size of the electromagnetic valve is greatly reduced, and the electromagnetic valve is favorably miniaturized. Finally, two different working modes are realized through different placing directions of the two movable magnets.
Aiming at the problems of low reliability, high energy consumption, difficulty in miniaturization and fixed working mode of the traditional electromagnetic three-way valve, the electromagnetic three-way valve adopts a bistable structure formed by combining an electromagnet, a fixed magnet and two movable magnets, the two movable magnets are mutually coupled and cooperatively move under the driving of the electromagnet, and the combination of a mechanical spring and an ejector rod is replaced by a magnetic spring, so that the reliability of the electromagnetic three-way valve is improved, and the energy consumption and the size of the electromagnetic three-way valve are reduced. In addition to this, two operation modes are realized using one structure. The invention has great application potential in a tiny electronic system.
Drawings
FIG. 1 is a schematic diagram of a conventional electromagnetic three-way valve;
FIG. 2 is a schematic external view of a bistable electromagnetic three-way valve in an embodiment;
FIG. 3 is an overall exploded view of a bistable electromagnetic three-way valve in an embodiment;
FIG. 4 is an assembly diagram of a valve body and an electromagnet on a bistable electromagnetic three-way valve in the embodiment;
FIG. 5 is a schematic structural diagram of a valve body in a bistable electromagnetic three-way valve in an embodiment;
FIG. 6 is a schematic structural diagram of a lower valve body of the bistable electromagnetic three-way valve in the embodiment;
FIG. 7 is a schematic view of a moving cylindrical magnet according to an embodiment;
FIG. 8 is a schematic diagram of the operation of the on-off three-way valve in the embodiment;
FIG. 9 is a schematic diagram of the operation of the two-position three-way valve in the embodiment.
In the figure, a-armature, b-coil, C-ejector rod, d-valve body, e-restoring spring, 1-electromagnet core, 2-electromagnet coil, 3-valve body, 4-inlet valve tube, 5-moving cylindrical magnet, 6-moving annular magnet, 7-fixed annular magnet, 12-valve port C, 31-upper valve body, 32-middle valve body, 33-lower valve body, 311-first central overflow hole, 312-central packaging hole, 313-connecting mounting hole, 321-moving annular magnet hole, 322-moving cylindrical magnet hole, 323-connecting column, 324-fixed annular magnet mounting hole, 325-connecting hole, 326-second central overflow hole, 327-surrounding overflow hole, 331-valve cavity, 332-mounting connecting column, 333-valve port A.
Detailed Description
The invention will be further illustrated and described with reference to specific embodiments. The technical features of the embodiments of the present invention can be combined correspondingly without mutual conflict.
The general diagram of the bistable three-way electromagnetic valve designed in this embodiment is shown in fig. 2, and mainly includes an electromagnet core 1, an electromagnet coil 2, a valve body 3, and an inlet valve pipe 4.
The explosion diagram of the three-way valve is shown in fig. 3 and comprises an electromagnet iron core 1, an electromagnet coil 2, a valve body 3, an inlet valve pipe 4, a movable cylindrical magnet 5, a movable annular magnet 6 and a fixed annular magnet 7. The electromagnet core is made into a cylindrical shape, so that the structure is more compact. For installation convenience, the valve body is divided into three parts, namely an upper valve body 31, a middle valve body 32 and a lower valve body 33, which can be connected into a whole in a respective connection mode. The upper valve body is made into a hub shape, so that the positioning and the installation of an electromagnet coil are convenient, the middle valve body is connected with the inlet valve pipe 4 (integrated or fixedly connected), a space for placing a movable annular magnet and a movable cylindrical magnet is reserved at the upper part of the middle valve body, the annular magnet and the cylindrical magnet can axially move in a cylindrical cavity in the valve body, an installation space for fixing the annular magnet is reserved at the bottom of the middle valve body, and an inlet valve port 333 is reserved at the lower part of the lower valve body.
In a preferred embodiment of the present invention, the upper valve body and the electromagnet core are assembled as shown in fig. 4, and the upper valve body 31 is formed in a hub shape in appearance to facilitate mounting and fixing of the electromagnet coil 2. The cylindrical electromagnet core 1 serves to bind the magnetic lines of force generated by the electromagnet coil 2 to enhance the magnetic coupling thereof to the moving magnet, and the bore thereof allows the fluid to flow. The bottom of the upper valve body is provided with a central packaging hole 312, a first central overflowing hole 311 is arranged in the central packaging hole 312, and the side edge of the first central overflowing hole 311 is provided with a groove, so that the change of a fluid overflowing channel is relaxed, and the poor flowing condition caused by the sudden change of a flow channel is favorably reduced. The valve body connecting mode is shown, and the bottom periphery of the upper valve body is provided with a mounting hole 313 which is matched and connected with a mounting connecting column 332 on the top periphery of the middle valve body. (alternatively, a bonding process may be used, or a one-piece valve body may be made).
Preferably, the magnetic attraction generated by electrifying the electromagnet core can enable the movable cylindrical magnet 5 or the movable annular magnet 6 to move upwards after departing from the lower stable position; the moving cylindrical magnet 5 or the moving annular magnet 6 can move downwards from the upper stable position by the magnetic repulsion force generated by electrifying the electromagnet iron core. Preferably, the magnetic attraction generated when the electromagnet core is not energized can maintain the moving cylindrical magnet 5 or the moving annular magnet 6 in the upper stable position.
In a preferred embodiment of the present invention, the structure of the valve body is shown in fig. 5, the upper side of the interior is provided with a moving ring magnet hole 321 and a moving cylinder magnet hole 322 arranged along the axial direction of the valve body for respectively placing the moving ring magnet 6 and the moving cylinder magnet 5, the moving cylinder magnet hole and the moving ring magnet hole are separated from each other by a circular ring wall surface; the top of the circular ring-shaped wall surface is arranged in the central packaging hole 312 and firmly props against the central packaging hole (the movable cylindrical magnet hole and the movable annular magnet hole are not communicated at the top), and the top of the circular ring-shaped wall surface is attached to the inner wall surface of the central packaging hole 312; the inlet valve pipe 4 is arranged at one side of the middle valve body, a group of surrounding overflowing holes 327 are arranged around the bottom of the middle valve body, when the movable annular magnet is located at the lower stable position, the inlet valve pipe is separated from the surrounding overflowing holes, the flow channel is closed, when the movable annular magnet is located at the upper stable position, the inlet valve pipe is communicated with the surrounding overflowing holes, and fluid flows into or out of the valve body through the inlet valve pipe and the surrounding overflowing holes. The middle valve body has a second central overflow aperture 326 in the center thereof which is closed when the moving cylindrical magnet is in the lower stable position and which is open when the moving cylindrical magnet is in the upper stable position. The bottom of the middle valve body is provided with a fixed ring magnet mounting hole 324, the fixed ring magnet is mounted at the position, the diameter of the inner hole of the fixed ring magnet is the same as that of the second central overflowing hole 326 of the middle valve body, and therefore fluid can enter and exit the inner cavity of the middle valve body through the second central overflowing hole and the fixed ring magnet. When the movable cylindrical magnet is located at the lower stable position, the hole is closed to block the flow channel, and when the movable cylindrical magnet is located at the upper stable position, the hole is opened to communicate with the flow channel. The four-way overflowing hole of the invention is not limited to the one (four-ring overflowing hole) shown in fig. 5, and can also have other shapes (such as circular holes) or numbers, and the increase of the area of the overflowing hole is beneficial to reducing the overflowing resistance and increasing the flow.
Fig. 6 illustrates the structure of the lower valve body, with the lower portion of the lower valve body being an inlet port 333 from which fluid can flow into or out of the valve chamber.
In a preferred embodiment of the present invention, the moving cylindrical magnet 5 is shown in fig. 7, and has a side cut to allow fluid to flow through it, and is installed on the same side as the central through-flow hole slot in the bottom of the upper valve body.
The bistable electromagnetic three-way valve has two working modes: a switch mode and a path switching mode.
When the movable cylindrical magnet and the movable annular magnet are installed in the same direction of the magnetic pole direction, the movable cylindrical magnet and the movable annular magnet move in the same direction, and the three-way valve is in an opening state and a closing state, so that the function of one-way fluid flow division and two-way or two-way fluid flow confluence and one-way fluid flow can be realized. As shown in fig. 8, when the valve is in a non-operating state (the electromagnet coil 2 is not energized), the moving cylindrical magnet 5 and the moving annular magnet 6 are attracted by the fixed annular magnet 7 to be located at a lower stable position, so that the second central overflowing hole and the surrounding overflowing holes are closed (the inlet valve pipe 4 and the second central overflowing hole 326 of the valve body are blocked), and the valve is in a normally closed state (fig. 8 a). When the valve is in a working state (the electromagnet coil 2 is electrified), the movable cylindrical magnet 5 and the movable annular magnet 6 are mutually coupled and cooperatively move under the action of the electromagnet core 2, so that the movable cylindrical magnet and the movable annular magnet are far away from the fixed annular magnet and reach an upper stable position. The moving magnet leaves the fixed ring magnet for a distance and then enters the potential well of the electromagnet and is quickly attached to the end cover of the iron core of the electromagnet, and at the moment, the valve can be kept in an open state without being electrified again (fig. 8 b). (where the moving magnet is attracted by the cylindrical core more than the stationary ring magnet due to distance). At this time, the inlet valve pipe 4 is communicated with the valve cavity of the lower valve body through the surrounding overflowing holes, and the valve cavity of the lower valve body is communicated with the valve port C through the middle valve body second central overflowing hole 326 and the ㄣ -shaped overflowing channel and the electromagnet core central through hole by the notch on the side edge of the movable cylindrical magnet. When the valve needs to be closed, only the electromagnet coil needs to be switched on with reverse current, the movable cylindrical magnet and the movable annular magnet move towards the fixed annular magnet under the action of repulsive force from the electromagnet iron core until the second central overflowing hole and the surrounding overflowing holes are blocked again, at the moment, the valve is powered off, and the movable cylindrical magnet and the movable annular magnet can also firmly block the corresponding overflowing holes by means of attractive force of the fixed annular magnet alone, so that the valve is recovered to a normally closed state (figure 8 a).
When the movable cylindrical magnet and the movable annular magnet are reversely installed according to the magnetic pole direction, the movable cylindrical magnet and the movable annular magnet move in a staggered mode, and at the moment, the three-way valve can achieve conversion between an AB valve port passage (wherein a B valve port refers to the inlet valve pipe 4) and an AC valve port passage. The working principle is as shown in fig. 9, when the electromagnet coil is energized in the forward direction, under the action of the electromagnet core, the moving annular magnet is attracted to reach the upper stable position, the moving cylindrical magnet is repelled to reach the lower stable position, the second central overflowing hole 326 is closed, the surrounding overflowing holes 327 are opened, the channels between the ports AB are communicated (fig. 9a), and at this time, the valve can also keep the state without energizing. When the electromagnet coil is reversely electrified, the movable annular magnet is repelled to reach the lower stable position, the movable cylindrical magnet is attracted to reach the upper stable position, the second middle overflowing hole 326 is opened, the surrounding overflowing holes 327 and the ports B are closed, the channels between the ports AC are communicated (fig. 9B), at the moment, the power is off, and the movable magnet can also keep the state under the action of the electromagnet core and the fixed annular magnet.
The structure is a bistable structure since the moving magnets (moving ring magnet and moving cylindrical magnet) are stable in both the lower extreme position (close to the fixed ring magnet) and the upper extreme position (close to the iron core of the electromagnet). Therefore, even if power is cut off when the moving magnet moves to the corresponding position, the moving magnet stays in the vicinity so that the valve still maintains the operating state at that time. Therefore, the invention can realize the long-time opening and closing of the valve without long-time power supply. Second, magnetic springs have a variable stiffness characteristic compared to mechanical springs, i.e., the closer the moving magnet is to the fixed magnet, the greater the equivalent stiffness between them, and thus failure is less likely to occur. And the movable magnet replaces an ejector rod, so that the size of the electromagnetic valve is greatly reduced, and the electromagnetic valve is favorably miniaturized. Finally, two different working modes are realized through different placing directions of the two movable magnets.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A bistable electromagnetic three-way valve is characterized by comprising a valve body (3) consisting of an upper valve body (31), a middle valve body (32) and a lower valve body (33), wherein an inlet valve pipe (4) is arranged at the side edge of the middle valve body (32), a valve port A (333) is arranged at the bottom of the lower valve body (33), an electromagnet coil (2) is wound on the outer ring of the upper valve body (31), an electromagnet iron core (1) is installed in the electromagnet iron core, the center of the electromagnet iron core (1) is perforated, one section of the electromagnet iron core extends out of the upper valve body (31), and the extending end of the electromagnet iron core serves as a valve port C (12) of the valve body;
a central packaging hole (312) is formed in the bottom of the upper valve body (31), and a first central overflowing hole (311) communicated with the valve port C (12) is formed in the central packaging hole (312);
the upper part of the middle valve body (32) is provided with a movable cylindrical magnet hole (322) and a movable annular magnet hole (321) which are arranged along the axial direction of the valve body; the movable cylindrical magnet hole and the movable annular magnet hole are separated from each other through the annular wall surface; the top of the circular wall surface is arranged in the central packaging hole (312) and is attached to the inner wall surface of the central packaging hole (312); the bottom of the movable cylindrical magnet hole is communicated with a fixed annular magnet mounting hole (324) through a second central through-flow hole (326), a fixed annular magnet (7) is arranged in the fixed annular magnet mounting hole (324), a through hole is formed in the center of the fixed annular magnet, the through hole enables the second central through-flow hole (326) to be communicated with a valve cavity (331) of the lower valve body, and the bottom of the movable annular magnet hole is communicated with the valve cavity (331) of the lower valve body through surrounding through-flow holes (327);
a valve cavity (331) is arranged in the lower valve body and is communicated with the valve port A (333);
a moving cylindrical magnet (5) is arranged in the moving cylindrical magnet hole (322), a moving annular magnet (6) is arranged in the moving annular magnet hole (321), the moving cylindrical magnet (5) and the moving annular magnet (6) can move up and down in the respective holes along the axial direction of the valve body, and when the moving cylindrical magnet (5) and the moving annular magnet (6) are located at the respective lower stable positions, the second central overflowing hole (326) and the surrounding overflowing holes (327) can be respectively blocked; when the movable annular magnet (6) is located at the upper stable position, the inlet valve pipe (4) can be communicated with the surrounding overflowing holes (327), and when the movable cylindrical magnet (5) is located at the upper stable position, the first central overflowing hole (311) is not blocked.
2. The bistable electromagnetic three-way valve according to claim 1, characterized in that the moving cylindrical magnet (5) is notched at the side, the first central overflowing hole (311) is notched at the bottom side, and the notched position is the moving cylindrical magnet side notched position; when the moving cylindrical magnet (5) is located at the top position of the stroke, the first central overflowing hole (311) is communicated with the moving cylindrical magnet hole (322) through the notch and the cut.
3. The bistable electromagnetic three-way valve according to claim 1, characterized in that the magnetic attraction force generated by the electromagnet core is capable of moving the mobile cylindrical magnet (5) or the mobile ring magnet (6) upwards out of the lower stable position; the moving cylindrical magnet (5) or the moving annular magnet (6) can move downwards from the upper stable position by the magnetic repulsion force generated by electrifying the electromagnet core.
4. Bistable electromagnetic three-way valve according to claim 1, characterized in that the magnetic attraction generated in the non-energized state of the electromagnet core is such as to maintain the mobile cylindrical magnet (5) or the mobile annular magnet (6) in the upper stable position.
5. The bistable electromagnetic three-way valve of claim 1 wherein said upper valve body is shaped in the form of a hub to facilitate the mounting and securing of the solenoid coil, and the solenoid core is shaped in the form of a cylinder with an internal bore that allows fluid flow; the upper valve body is connected with the middle valve body in a matching way or made into an integrated valve body, and the middle valve body is connected with the lower valve body in a matching way or made into an integrated valve body.
6. Bistable electromagnetic three-way valve according to claim 1, characterized in that said perimetrical overflowing holes (327) are more than one, which are uniformly arranged around the bottom of the mobile annular magnet hole.
7. The bistable electromagnetic three-way valve of claim 1, wherein said moving cylindrical magnet and said moving ring magnet are mounted with their magnetic poles oriented in the same direction.
8. The bistable electromagnetic three-way valve of claim 1 wherein said moving cylindrical magnet and said moving ring magnet are mounted in opposite magnetic pole orientations.
9. A bistable operation method of the bistable electromagnetic three-way valve according to claim 7, characterized in that:
when the electromagnet coil is not electrified, the movable cylindrical magnet and the movable annular magnet are attracted by the fixed annular magnet and are positioned at the lower stable position, so that the second central overflowing hole and the surrounding overflowing holes are respectively sealed, a channel between the inlet valve pipe and the second central overflowing hole is blocked, and the valve is in a normally closed state;
when the electromagnet coil is electrified, the movable cylindrical magnet and the movable annular magnet are mutually coupled and move cooperatively under the action of the electromagnet, so that the movable cylindrical magnet and the movable annular magnet are far away from the fixed annular magnet and reach an upper stable position, the inlet valve pipe is communicated with the valve cavity of the lower valve body through the surrounding through-holes, and the valve cavity of the lower valve body is communicated with the valve port C through the second central through-hole and the first central through-hole; the movable magnet leaves the fixed annular magnet for a certain distance and then enters the potential well of the electromagnet core and is quickly attached to the electromagnet core end cover, at the moment, the valve does not need to be electrified, and the valve can also be kept in an open state;
when the electromagnetic three-way valve needs to be changed from an opening state to a closing state, only the electromagnet coil needs to be led in reverse current, the movable cylindrical magnet and the movable annular magnet move towards the fixed annular magnet under the action of repulsive force from the electromagnet iron core until the second central overflowing hole and the surrounding overflowing holes are blocked again, and at the moment, even if the power is cut off, the electromagnetic three-way valve can be in a normally closed state.
10. A bistable operation method of the bistable electromagnetic three-way valve according to claim 8, characterized in that:
when the electromagnet coil is electrified in the positive direction, under the action of the electromagnet iron core, the movable annular magnet is attracted to reach the upper stable position, the movable cylindrical magnet is repelled to reach the lower stable position, the second central overflowing hole is closed, the surrounding overflowing holes are opened, and the inlet valve pipe is communicated with the valve port A through the surrounding overflowing holes and the valve cavity of the lower valve body; at the moment, the electromagnetic three-way valve can also keep the state without electrifying;
when the electromagnet coil is reversely electrified, the movable annular magnet is repelled to reach the lower stable position, the movable cylindrical magnet is attracted to reach the upper stable position, the second central overflowing hole is opened, the surrounding overflowing holes are closed by the movable annular magnet, the valve port A passes through the valve cavity of the lower valve body, and the second central overflowing hole and the first central overflowing hole are communicated with the valve port C; at this time, the electromagnetic three-way valve can maintain the state without being energized.
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| CN202111241177.7A CN114110205B (en) | 2021-10-25 | 2021-10-25 | Bistable electromagnetic three-way valve |
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| CN113324044A (en) * | 2021-07-07 | 2021-08-31 | 杭州气味王国科技有限公司 | Novel electromagnetic valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4513890B2 (en) * | 2008-04-03 | 2010-07-28 | トヨタ自動車株式会社 | solenoid valve |
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| CH679327A5 (en) * | 1989-07-18 | 1992-01-31 | Honeywell Lucifer Sa | Solenoid valve - has hollow cylindrical plug containing coil, and fixed and movable magnetic cores which move plug against return springs |
| CN103807463A (en) * | 2014-02-14 | 2014-05-21 | 中国电子科技集团公司第四十五研究所 | Diluting and discharging valve of highly corrosive high temperature chemical liquids |
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| CN114110205A (en) | 2022-03-01 |
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