CN121854647A - A bistable electromagnetic three-way valve - Google Patents
A bistable electromagnetic three-way valveInfo
- Publication number
- CN121854647A CN121854647A CN202610258401.XA CN202610258401A CN121854647A CN 121854647 A CN121854647 A CN 121854647A CN 202610258401 A CN202610258401 A CN 202610258401A CN 121854647 A CN121854647 A CN 121854647A
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- valve
- permanent magnet
- port
- driving element
- core
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Abstract
The invention discloses a bistable electromagnetic three-way valve, which comprises a valve body, wherein a valve cavity is arranged in the valve body and is communicated with a first connector through a first valve port, the valve cavity is communicated with a second connector through a second valve port, the valve cavity is also communicated with a third connector on the valve body, a movable permanent magnetic valve core is arranged in the valve cavity, a coil matched with the permanent magnetic valve core is arranged on the outer side of the valve body, and a driving element is arranged between the first valve port and the first connector. Compared with the prior art, the coil provides 2-direction driving force for the permanent magnet valve core by changing the current direction, and the permanent magnet valve core can be driven to move up and down by smaller driving force by means of the suction force of the driving element and the fluid pressure in the valve cavity, so that energy conservation is facilitated. And secondly, the attractive force between the driving element and the permanent magnet valve core is utilized to maintain the sealing of the first valve port, and the sealing of the second valve port is maintained through the fluid pressure in the valve cavity, so that the self-holding of 2 working states is realized, the current is not required to be maintained, and the further energy saving is facilitated.
Description
Technical Field
The invention relates to the technical field of electromagnetic three-way valves, in particular to a bistable electromagnetic three-way valve.
Background
In the pneumatic massage seat, an electromagnetic three-way valve is responsible for controlling the inflation and the decompression of the massage air bag. The air bag is inflated when the electromagnetic valve is electrified, and is directly depressurized when the electromagnetic valve is disconnected, so that the air bag does not have the pressure maintaining capability. Therefore, if the air bag is required to keep an inflated state, the electromagnetic valve needs to be continuously electrified, so that not only is the energy consumption higher, but also the coil is seriously heated, copper loss is increased during long-term operation, and the temperature rise problem is further aggravated.
In addition, due to the limitation of heating of the coil, the traditional electromagnetic three-way valve is difficult to realize continuous energization and pressure maintaining for a long time. If the system needs pressure maintaining function, an independent electromagnetic pressure relief valve is usually added, but this will bring problems of cost rise and overall energy consumption increase of the system.
Disclosure of Invention
The invention provides a bistable electromagnetic three-way valve, which is used for solving the problems that the existing electromagnetic three-way valve needs continuous energization, pressure maintaining, high energy consumption and complex structure.
The invention provides a bistable electromagnetic three-way valve, which comprises a valve body, wherein a valve cavity is arranged in the valve body and is communicated with a first joint through a first valve port, the valve cavity is communicated with a second joint through a second valve port, the valve cavity is also communicated with a third joint on the valve body, a movable permanent magnet valve core is arranged in the valve cavity, a coil matched with the permanent magnet valve core is arranged on the outer side of the valve body, a driving element is arranged between the first valve port and the first joint, when the permanent magnet valve core seals the first valve port, the attractive force F 1 of the driving element on the permanent magnet valve core is larger than the acting force F 2 of fluid in the first joint on the permanent magnet valve core, when the coil is positively electrified, the coil exerts a driving force F 5 towards the second valve port so as to enable the permanent magnet valve core to move towards the second valve port, when the permanent magnet valve core seals the second valve port, the attractive force F 3 of the driving element on the permanent magnet valve core is smaller than the acting force F 4 exerted by fluid in the valve cavity on the permanent magnet valve core, when the coil is reversely electrified, and the coil exerts a driving force F6257 towards the first valve core towards the first valve port so as to enable the permanent magnet valve core to move towards the first valve port.
Preferably, the driving element is made of a magnetic material.
Preferably, the driving element is made of ferromagnetic material.
Preferably, a guide part is arranged in the valve cavity, the permanent magnet valve core is in sliding connection with the guide part, a first channel is arranged at the guide part of the valve cavity, and the third joint is communicated with the valve cavity through the first channel.
Preferably, the valve body comprises an upper valve body and a lower valve body which are detachably connected, the first valve port is arranged on the lower valve body, the second valve port is arranged on the upper valve body, the second joint is arranged on the upper valve body, and a sealing ring is arranged between the upper valve body and the lower valve body.
Preferably, the upper end and the lower end of the permanent magnet valve core are respectively provided with a sealing part, and the sealing parts are used for sealing the first valve port or the second valve port.
Preferably, the sealing part is provided with a sealing surface matched with the first valve port or the second valve port, and the sealing surface is a plane or a conical surface.
Preferably, the first joint is arranged transversely, and the driving element is fixed in the first joint.
Preferably, the driving element is U-shaped, the first valve port, the second valve port and the coil are all positioned in the driving element, the lower end of the driving element is clamped with the valve body, and the upper end of the driving element is attached to the valve body.
Preferably, one end of the first connector is provided with a guide section, the other end of the first connector is provided with a sealing section matched with the guide section, and the guide section and the sealing section are sealed through an O-shaped ring.
Compared with the prior art, the coil provides 2-direction driving force for the permanent magnet valve core by changing the current direction, and the permanent magnet valve core can be driven to move up and down by smaller driving force by means of the suction force of the driving element and the fluid pressure in the valve cavity, so that energy conservation is facilitated. And secondly, the attractive force between the driving element and the permanent magnet valve core is utilized to maintain the sealing of the first valve port, and the sealing of the second valve port is maintained through the fluid pressure in the valve cavity, so that the self-holding of 2 working states is realized, the current is not required to be maintained, and the further energy saving is facilitated. The invention has the advantages of simple structure, high reliability and low power consumption.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a first embodiment of the present invention;
FIG. 2 is a first cross-sectional schematic view of FIG. 1;
FIG. 3 is a second cross-sectional schematic view of FIG. 1;
FIG. 4 is a third cross-sectional schematic view of FIG. 1;
FIG. 5 is a schematic diagram of a second embodiment of the present invention;
FIG. 6 is a schematic diagram of a bistable electromagnetic three-way valve of the present invention mounted in parallel;
FIG. 7 is a diagram of the present invention.
Reference numerals:
1. Valve body, 11, valve cavity, 12, first valve port, 13, second valve port, 14, first connector, 15, second connector, 16, third connector, 17, guide portion, 18, first channel, 2, permanent magnet valve core, 21, sealing portion, 3, coil, 4, driving element, 5, sealing ring, 6, contact pin, 100, upper valve body, 200, lower valve body.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1 and 2, this embodiment provides a bistable electromagnetic three-way valve, including a valve body 1, a valve cavity 11 is provided in the valve body 1, the valve cavity 11 is communicated with a first joint 14 through a first valve port 12, the valve cavity 11 is communicated with a second joint 15 through a second valve port 13, the valve cavity 11 is also communicated with a third joint 16 on the valve body 1, a movable permanent magnet valve core 2 is provided in the valve cavity 11, a coil 3 matched with the permanent magnet valve core 2 is provided at the outer side of the valve body 1, a driving element 4 is provided between the first valve port 12 and the first joint 14, the driving element 4 is used for applying attractive force to the permanent magnet valve core 2, when the permanent magnet valve core 2 seals the first valve port 12, attractive force F 1 of the driving element 4 to the permanent magnet valve core 2 is larger than force F 2 applied to the permanent magnet valve core 2 by fluid in the first joint 14, when the coil 3 is electrified forward, the coil 3 applies driving force F 5 towards the direction of the permanent magnet valve core 2 to the second valve port 13 so as to enable the permanent magnet valve core 2 to move towards the second valve port 13, when the permanent magnet valve core 2 seals the second valve port 13, a driving element 4 applies attractive force to the permanent magnet valve core 2 to seal the second valve port 13, and when the driving element 4 applies attractive force F5672 to the permanent magnet valve core 2 to the first coil 5372 is smaller than the first coil 5372 and applies force F to the first coil 3 to the first valve core 2 when the first coil is electrified to the first valve core 2 and the direction is opposite to the direction.
In the invention, the coil 3 applies a driving force F 5 to the permanent magnet valve core 2 to drive the permanent magnet valve core 2 to move towards the second valve port 13 to seal the second valve port 13, when the permanent magnet valve core 2 seals the second valve port 13, the first joint 14 is communicated with the valve cavity 11, the pressure in the valve cavity 11 is the same as the pressure in the first joint 14, the coil 3 is powered off, and the driving element 4 is far away from the permanent magnet valve core 2, so that the attractive force to the permanent magnet valve core 2 is reduced to the minimum, the attractive force F 3 of the driving element 4 to the permanent magnet valve core 2 is smaller than the acting force F 4 of fluid in the valve cavity 11 to the permanent magnet valve core 2, namely, the permanent magnet valve core 2 can maintain the sealing to the second valve port 13 through the fluid pressure in the valve cavity 11, the coil 3 is not required to be always electrified, and the energy consumption is saved. In the process, the acting force F 2 applied to the permanent magnet valve core 2 by the fluid in the first connector 14 is utilized to help the coil 3 to push the permanent magnet valve core 2, so that the coil 3 only needs to provide a smaller driving force F 5, and the energy consumption is further saved.
The coil 3 applies a driving force F 6 to the permanent magnet valve core 2 to drive the permanent magnet valve core 2 to move towards the first valve port 12 to seal the first valve port 12, when the permanent magnet valve core 2 seals the first valve port 12, the second joint 15 is communicated with the valve cavity 11, the coil 3 is powered off, the driving element 4 is close to the permanent magnet valve core 2, so that the attractive force to the permanent magnet valve core 2 is maximized, the attractive force F 1 of the driving element 4 to the permanent magnet valve core 2 is larger than the acting force F 2 of fluid in the first joint 14 to the permanent magnet valve core 2, namely the permanent magnet valve core 2 can maintain sealing to the first valve port 12 through the attractive force of the driving element 4, the coil 3 is not required to be electrified all the time, and energy consumption is saved. In the process, the attractive force F 3 of the driving element 4 to the permanent magnet valve core 2 is utilized to help the coil 3 to push the permanent magnet valve core 2, so that the coil 3 only needs to provide a smaller driving force F 6, and the energy consumption is further saved.
The invention adopts the permanent magnet as the moving valve core, and adjusts the stress direction of the valve core by adjusting the current direction, thereby realizing bistable state, needing no current maintenance and having simple overall structure.
The working principle of the invention is that the sealing area of the permanent magnet valve core 2 and the first valve port 12 is S1, the sealing area of the permanent magnet valve core 2 and the second valve port 13 is S2, and at the moment, the permanent magnet valve core 2 receives acting force F 2 =S1×P1 exerted by gas, wherein P1 is the air pressure in the first joint 14, and F 1＞F2 is arranged, so that the permanent magnet valve core 2 can maintain the sealing of the first valve port 12. When the coil 3 is electrified in the forward direction, an upward driving force F 5 is generated on the permanent magnet valve core 2, so that F 2+F5＞F1 and the permanent magnet valve core 2 move upwards, the first valve port 12 is opened, and the second valve port 13 is closed.
At this time, since the first valve port 12 is opened, the air pressure in the valve cavity 11 is the same as the air pressure in the first connector 14, so that the permanent magnetic valve core 2 receives an upward acting force F 4 =s2×p1 exerted by the air in the valve cavity 11, and since the permanent magnetic valve core 2 is far away from the driving element 4, the attraction of the driving element 4 to the permanent magnetic valve core 2 is small, so that F 3＜F4 can make the permanent magnetic valve core 2 maintain the sealing to the second valve port 13.
When the coil 3 is reversely electrified, a downward driving force F 6 is generated on the permanent magnet valve core 2, so that F 6+F3＞F4 and the permanent magnet valve core 2 move downward, the second valve port 13 is opened, and the first valve port 12 is closed.
As another embodiment of the invention the pressure in the first joint 14 is greater than the pressure in the valve chamber 11, the first joint 15 and the third joint 16, respectively. The driving element 4 should be arranged at one side of the high pressure inlet to realize the maximum holding force when the first valve port 12 is closed and the minimum restoring force when the second valve port 13 is closed, in this embodiment, the high pressure gas is in the first joint 14, when the second valve port 13 is closed and the first valve port 12 is opened, the gas in the first joint 14 flows into the third joint 16 to realize the air intake, and when the first valve port 12 is closed and the second valve port 13 is opened, the gas in the third joint 16 flows into the second joint 15 to realize the air leakage.
As a further embodiment of the invention the driving element 4 is made of a magnetic material, for example the driving element 4 may be a ferromagnetic metal sheet or a permanent magnet.
As another embodiment of the invention the driving element 4 is made of ferromagnetic material, in particular the driving element 4 is a ferromagnetic metal sheet. The attractive force between the ferromagnetic metal and the permanent magnet valve core 2 is sharply reduced along with the increase of the distance, which is favorable for realizing F 1＞F2 and F 3＜F4 in a small stroke range and reducing the product size, and secondly, only attractive force between the ferromagnetic metal and the permanent magnet iron core can be generated, so that the possibility of stress direction errors caused by direction installation errors can be avoided.
As another embodiment of the invention, referring to fig. 4, a guiding part 17 is arranged in the valve cavity 11, the permanent magnet valve core 2 is slidably connected with the guiding part 17, a first channel 18 is arranged at the guiding part 17 of the valve cavity 11, and the third joint 16 is communicated with the valve cavity 11 through the first channel 18. Specifically, the guide portion 17 is a guide post fixed on a cavity wall of the valve cavity 11, and the guide post and the first channel 18 are multiple, and the first channel 18 is located between the two guide posts.
In one embodiment of the valve body 1, the valve body 1 comprises an upper valve body 100 and a lower valve body 200 which are detachably connected, a first valve port 12 is arranged on the lower valve body 200, a second valve port 13 is arranged on the upper valve body 100, a second joint 15 is arranged on the upper valve body 100, a permanent magnet valve core 2 is arranged below the upper valve body 100, and a sealing ring 5 is arranged between the upper valve body 100 and the lower valve body 200.
As another embodiment of the present invention, the upper end and the lower end of the permanent magnet valve core 2 are respectively provided with a sealing part 21, and the sealing part 21 is used for sealing the first valve port 12 or the second valve port 13.
As another embodiment of the invention, the sealing part 21 is provided with a sealing surface matched with the first valve port 12 or the second valve port 13, and the sealing surface is a plane or a conical surface, namely, the sealing part 21 seals the first valve port 12 and the second valve port 13 in an end surface sealing or conical surface sealing mode.
As another embodiment of the present invention, referring to fig. 3, the third joint 16 is disposed vertically, the upper end of the third joint 16 is located outside the lower end of the valve chamber 11, and the third joint 16 communicates with the first passage 18 across the first joint 14. The third joint 16 is always communicated with the valve cavity 11 no matter where the permanent magnet valve core 2 is located.
As a further embodiment of the invention, the first joint 14 is arranged transversely, the driving element 4 is fixed in the first joint 14, and the driving element 4 is provided with a through hole adapted to the first valve port 12.
As another embodiment of the invention, referring to fig. 6, one end of the first joint 14 is provided with a guide section, and the other end of the first joint 14 is provided with a sealing section cooperating with the guide section. The guide section of the first joint 14 of one bistable electromagnetic three-way valve can be inserted into the sealing section of the first joint 14 of the other bistable electromagnetic three-way valve, then the guide section and the sealing section are sealed by arranging an O-shaped ring, and a plurality of bistable electromagnetic three-way valves are conveniently installed in parallel and sealed through the structural design.
As another embodiment of the invention, a contact pin 6 is arranged on the valve body 1.
Example two
This embodiment is substantially the same as the first embodiment except that:
In another embodiment of the invention, referring to fig. 1, the driving element 4 is U-shaped, the first valve port 12, the second valve port 13 and the coil 3 are all positioned in the driving element 4, the lower end of the driving element 4 is clamped with the valve body 1, and the upper end of the driving element 4 is attached to the valve body 1. The coil 3 is wrapped in the driving element 4, so that magnetic force lines can be closed, driving force of a product can be improved, and the size of the product can be reduced.
The invention is used for massaging the front end of the air bag of the seat to perform the functions of air inflation and pressure relief of the air bag. The device can also be used for oxygenerator seeds to switch the flow channels of 2 molecular sieves.
The invention has the advantages of simple structure, high reliability and low power consumption. The method comprises the following steps:
The coil 3 does not need to be electrified for a long time, so that the risk of heating and burning of the coil 3 (such as high humidity, vibration and corrosion) is reduced.
Low power consumption, no need of holding current, low duty ratio, and being in line with the trend of energy saving and environmental protection.
The continuous power-off pressure maintaining device has the advantages of being simple in structure, capable of achieving continuous power-off pressure maintaining function without adding an electromagnetic pressure relief valve, simplifying the number of valve members of a system, unifying the specification and the model of the valve members of the system, and reducing the cost and the power consumption of the system.
The invention can adjust the working pressure interval of the product by setting the surface magnetism of the permanent magnet valve core 2.
It should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the technical solution described in the above-mentioned embodiments may be modified or some technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solution of the embodiments of the present invention.
Claims (10)
1. A bistable electromagnetic three-way valve is characterized by comprising a valve body, wherein a valve cavity is arranged in the valve body and is communicated with a first connector through a first valve port, the valve cavity is communicated with a second connector through a second valve port, the valve cavity is also communicated with a third connector on the valve body, a movable permanent magnet valve core is arranged in the valve cavity, a coil matched with the permanent magnet valve core is arranged on the outer side of the valve body, a driving element is arranged between the first valve port and the first connector, when the permanent magnet valve core seals the first valve port, attractive force F 1 of the driving element on the permanent magnet valve core is larger than the acting force F 2 of fluid in the first connector on the permanent magnet valve core, when the coil is positively electrified, the coil exerts a driving force F 5+F2﹥F1 towards the second valve port so as to enable the permanent magnet valve core to move towards the second valve port, when the permanent magnet valve core seals the second valve port, attractive force F 3 of the driving element on the permanent magnet valve core is smaller than acting force F 4 exerted by fluid in the valve cavity on the permanent magnet valve core, when the coil is reversely electrified, and when the coil is electrified reversely, the coil exerts a driving force F6257 towards the first valve core towards the first valve port so as to enable F to move towards the first valve port.
2. The bistable electromagnetic three-way valve of claim 1, wherein said driving element is made of magnetic material.
3. The bistable electromagnetic three-way valve of claim 2, wherein said driving element is made of ferromagnetic material.
4. The bistable electromagnetic three-way valve of claim 3, wherein a guide part is arranged in the valve cavity, the permanent magnet valve core is in sliding connection with the guide part, the valve cavity is provided with a first channel at the guide part, and the third joint is communicated with the valve cavity through the first channel.
5. The bistable electromagnetic three-way valve of claim 4, wherein said valve body comprises an upper valve body and a lower valve body that are removably coupled, said first valve port is disposed on the lower valve body, said second valve port is disposed on the upper valve body, said second connector is disposed on the upper valve body, and a seal ring is disposed between said upper valve body and said lower valve body.
6. The bistable electromagnetic three-way valve of claim 5, wherein the upper and lower ends of the permanent magnet valve core are respectively provided with a sealing part, and the sealing part is used for sealing the first valve port or the second valve port.
7. The bistable electromagnetic three-way valve of claim 6, wherein said sealing portion is provided with a sealing surface cooperating with either the first port or the second port, said sealing surface being planar or conical.
8. The bistable electromagnetic three-way valve of claim 1, wherein said first joint is laterally disposed and said actuating member is secured within said first joint.
9. The bistable electromagnetic three-way valve of claim 8, wherein the driving element is U-shaped, the first valve port, the second valve port and the coil are all positioned in the driving element, the lower end of the driving element is clamped with the valve body, and the upper end of the driving element is attached to the valve body.
10. The bistable electromagnetic three-way valve of claim 9, wherein one end of said first joint is provided with a guide section, the other end of said first joint is provided with a sealing section matched with the guide section, and the guide section and the sealing section are sealed by an O-ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202610258401.XA CN121854647A (en) | 2026-03-04 | 2026-03-04 | A bistable electromagnetic three-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202610258401.XA CN121854647A (en) | 2026-03-04 | 2026-03-04 | A bistable electromagnetic three-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN121854647A true CN121854647A (en) | 2026-04-14 |
Family
ID=99382322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202610258401.XA Pending CN121854647A (en) | 2026-03-04 | 2026-03-04 | A bistable electromagnetic three-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN121854647A (en) |
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2026
- 2026-03-04 CN CN202610258401.XA patent/CN121854647A/en active Pending
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