Electromagnetic valve and shunt conduction system

Abstract

This invention relates to an electromagnetic valve and a flow-diverting system. The electromagnetic valve includes a valve body, a magnetic valve core disposed within the valve body, and a coil wound around the outer periphery of the valve body. A coil separator ring is provided on the outer periphery of the valve body. A wire is wound from one side of the coil separator ring, then, after changing its winding direction through the coil separator ring, is wound again on the other side of the coil separator ring to form the coil. A flow-guiding cavity is provided axially within the valve body, and the magnetic valve core is slidably disposed within the flow-guiding cavity. When the coil is energized, both ends of the magnetic valve core simultaneously generate a coaxial force to drive the magnetic valve core to move axially within the flow-guiding cavity. The electromagnetic valve and flow-diverting system of this invention feature a fast valve core response and good sealing performance.

Description

Technical Field

[0001] This invention relates to the field of solenoid valve technology, and more specifically, to a solenoid valve and a flow diversion system. Background Technology

[0002] Solenoid valves, as indispensable actuators in the field of automation control, are widely used in comfort systems, fluid transportation, precision instruments, automobile manufacturing, and many other fields. Their core working principle involves generating an electromagnetic field through an energized coil, which drives a magnetic valve core within the valve body to slide axially, thereby controlling the flow path. The magnitude of the electromagnetic force acting on the valve core directly determines its movement response sensitivity and sealing performance, making it a core factor affecting the reliability of the solenoid valve. In existing technologies, solenoid valve coils often employ a unidirectional winding structure, resulting in an uneven magnetic field distribution and limited magnetic field strength after energization. This allows only a single-sided axial driving force to be applied to the magnetic valve core, leading to insufficient effective force on the valve core under unit current input conditions. On one hand, this results in a weak force between the valve core and the port within the valve body, preventing the valve core from tightly fitting against the port and causing poor sealing. On the other hand, insufficient force on the valve core directly leads to poor movement response sensitivity. Summary of the Invention

[0003] The purpose of this invention is to provide a solenoid valve and a flow diversion system, wherein the solenoid valve has a fast valve core response speed and good sealing performance.

[0004] An electromagnetic valve includes a valve body, a magnetic valve core disposed within the valve body, and a coil wound around the periphery of the valve body. A coil separator ring is provided on the periphery of the valve body. A wire is wound from one side of the coil separator ring, then, after changing its winding direction through the coil separator ring, is wound again on the other side of the coil separator ring to form the coil. A flow guide cavity is provided axially within the valve body, and the magnetic valve core is slidably disposed within the flow guide cavity. When the coil is energized, both ends of the magnetic valve core simultaneously generate a coaxial force to drive the magnetic valve core to move axially within the flow guide cavity.

[0005] In this solution, the winding direction of the conductor is changed by a coil separator ring, creating a structure where the coil is wound in different directions on both sides. When energized, this allows the magnetic valve core to generate a coaxial force simultaneously at both ends. Compared to existing technologies where the valve core is only stressed on one side, this significantly increases the effective axial driving force of the magnetic valve core per unit current, solving the problem of insufficient driving force. On one hand, sufficient driving force allows the magnetic valve core to effectively overcome friction during movement, quickly and tightly fitting onto the port, completely solving the problems of poor sealing and media leakage, and improving the reliability of the solenoid valve. On the other hand, the increased driving force accelerates the sliding speed of the magnetic valve core within the guide cavity, avoiding action delays and jamming, significantly improving the sensitivity of the magnetic valve core's movement response, enhancing the control accuracy of the control system, and expanding the application range of solenoid valves in precision control. Simultaneously, it eliminates the need to increase the current or enlarge the coil to increase the driving force, avoiding drawbacks such as increased energy consumption, coil aging, and bulky structure, thus balancing energy efficiency and miniaturization requirements.

[0006] Furthermore, the coil separating ring is a flange protruding around the outer periphery of the valve body, and the flange is provided with a reversing structure that can change the winding direction of the coil.

[0007] In this design, the coil separator ring is a flange surrounding the valve body, integrally formed with the valve body. Its simple structure and convenient manufacturing process effectively separate the coil, ensuring clear winding areas on both sides and preventing uneven magnetic field distribution caused by tangled winding. The reversing structure on the flange enables smooth reversal during wire winding, ensuring precise opposite winding directions on both sides of the coil. This ensures that the magnetic field generated after the coil is energized forms a coaxial force at both ends of the magnetic valve core, preventing magnetic field cancellation due to unsmooth reversal or winding deviation, thus guaranteeing the stability of the driving force enhancement effect. Simultaneously, the flange structure provides a certain degree of limit to the coil, preventing axial displacement during operation and ensuring stable relative positions between the coil and the magnetic valve core, further guaranteeing the reliability and consistency of the solenoid valve's operation.

[0008] Furthermore, the commutation structure includes a commutation notch provided on the flange, the commutation notch being used for commutation during wire winding, so that the winding directions of the wires on both sides of the coil separator ring are opposite.

[0009] In this design, the reversing notch structure is simple and has low processing costs. It can be directly cut on the flange without the need for additional complex components, facilitating mass production. During wire winding, the reversing notch enables smooth reversal, making operation convenient and allowing precise control of the winding directions on both sides of the coil. This ensures that the magnetic field generated after the coil is energized forms a driving force in the same direction at both ends of the magnetic valve core, guaranteeing an enhanced driving force. Simultaneously, the reversing notch provides some limitation and guidance for the wire, preventing deviation and entanglement during reversal, ensuring the regularity of the winding, and thus guaranteeing the uniformity of the coil's magnetic field distribution. This further improves the stability of the valve core under stress, indirectly improving the valve core's movement response sensitivity and sealing performance, while also reducing the operational difficulty during winding and increasing production efficiency.

[0010] Furthermore, the commutation structure includes a commutation protrusion disposed on the flange, the commutation protrusion being used for commutation during wire winding, so that the winding directions of the wires on both sides of the coil separator ring are opposite.

[0011] In this scheme, the commutation structure adopts a raised structure, which can also play a stable guiding and limiting role for the wound wire, preventing the wire from slipping or deviating during the commutation process, ensuring the consistency and accuracy of the winding direction on both sides of the coil, thereby ensuring the stability of the magnetic field distribution after the coil is energized, so that the two ends of the magnetic valve core obtain a uniform and stable coaxial force, and improving the stability and reliability of the driving force.

[0012] Furthermore, the outer periphery of the valve body is provided with a wire groove, the coil separator ring is disposed in the wire groove, the coil is wound in the wire groove, and the coil separator ring divides the coil into a first winding part and a second winding part. The first winding part and the second winding part achieve opposite winding directions through the reversing structure.

[0013] In this design, grooves are provided around the valve body to precisely position and limit the coil, preventing loosening or displacement during winding and ensuring the regularity of the coil winding. This keeps the relative positions of the coil, valve body, and magnetic valve core stable, ensuring the magnetic field acts precisely on the magnetic valve core. A coil separator ring is placed within the grooves to precisely divide the coil into a first winding section and a second winding section, clearly defining the boundaries between the two winding areas and preventing winding crossings or confusion. This ensures that the first and second winding sections wind in opposite directions, thereby guaranteeing that the magnetic field generated when the coil is energized forms a unidirectional driving force at both ends of the magnetic valve core, maximizing the valve core driving force per unit current.

[0014] Furthermore, the axis of the coil coincides with the axis of the magnetic valve core, and the two ends of the coil in the axial direction cover the axial movement range of the magnetic valve core.

[0015] In this design, the coil axis coincides with the magnetic valve core axis, ensuring that the magnetic field generated by the coil after energization is evenly distributed around the outer periphery of the magnetic valve core. This results in uniform force on both ends of the magnetic valve core, with consistent magnitude and direction, preventing uneven force distribution due to magnetic field deviation. This, in turn, prevents the magnetic valve core from jamming during movement, improving the smoothness and responsiveness of its movement. The axial ends of the coil cover the axial movement range of the magnetic valve core, meaning that regardless of the position the magnetic valve core moves within the guide cavity, both ends remain within the magnetic field range generated by the coil. This ensures a continuous and stable coaxial force, guaranteeing sufficient driving force throughout the movement and preventing a decrease in driving force due to the magnetic valve core moving outside the magnetic field range. This ensures timely and stable response of the magnetic valve core, improving the control accuracy and operational reliability of the solenoid valve.

[0016] Furthermore, when the magnetic valve core moves axially within the flow guiding cavity, the two end faces of the magnetic valve core are respectively located within the axial regions of the flow guiding cavity corresponding to the first winding portion and the second winding portion.

[0017] In this solution, during the entire axial movement of the magnetic valve core, its two end faces always correspond to the magnetic field regions of the first winding part and the second winding part, respectively. This ensures that both ends of the valve core are continuously subjected to the coaxial force generated by the first winding part and the second winding part, maximizing the stability and sufficiency of the force on the magnetic valve core, avoiding fluctuations in the driving force of the magnetic valve core, and preventing problems such as delayed movement, jamming, or poor sealing caused by a sudden drop in driving force.

[0018] Furthermore, the valve body is also provided with a first channel and a second channel that are connected to the flow guide cavity. After the coil is energized, the magnetic valve core moves axially along the flow guide cavity under electromagnetic drive, thereby blocking the first channel or the second channel.

[0019] In this solution, the setting of the first and second channels enables the solenoid valve to control the on / off state of two different channels. Sufficient electromagnetic driving force allows the valve core to move quickly and accurately to the preset position, realizing the rapid blocking or opening of the first or second channel. This solves the problem of insufficient valve core driving force leading to incomplete channel sealing and media leakage in the prior art, and significantly improves the reliability of channel on / off control.

[0020] Furthermore, the sidewall of the flow guiding cavity is provided with a plurality of guide protrusions, the guide protrusions extend along the axial direction of the flow guiding cavity, the outer peripheral side of the magnetic valve core slides in cooperation with the guide protrusions, and a flow channel is formed between the outer peripheral side of the magnetic valve core and the sidewall of the flow guiding cavity through the gap between adjacent guide protrusions. The valve body is also provided with a third channel communicating with the flow channel.

[0021] In this design, the guide protrusions precisely guide the magnetic valve core, ensuring smooth axial sliding within the flow guide cavity. This prevents the valve core from tilting or shifting, reduces the contact area between the valve core and the sidewall of the flow guide cavity, lowers sliding friction, and further enhances the responsiveness of the valve core movement. It also prevents valve core jamming and delayed action caused by excessive friction. The gaps between adjacent guide protrusions form flow channels that connect to the third channel, enabling multi-channel media delivery or diversion control.

[0022] Based on the same technical concept, a flow diversion and conduction system is designed, including the aforementioned solenoid valve.

[0023] Compared with existing technologies, the beneficial effects of this invention are as follows: By changing the winding direction of the wire through the coil separator ring, the coil forms a structure with different winding directions on both sides. After energization, the magnetic valve core can generate a coaxial force simultaneously at both ends. Compared with the structure of the valve core in the prior art where the force is only on one side, this significantly increases the effective axial driving force of the magnetic valve core under unit current, solving the problem of insufficient driving force of the magnetic valve core. On the one hand, sufficient driving force allows the magnetic valve core to effectively overcome the friction during movement, quickly and tightly fitting onto the port, completely solving the problems of poor sealing and media leakage, and improving the reliability of the solenoid valve. On the other hand, the increased driving force can accelerate the sliding speed of the magnetic valve core in the guide cavity, avoiding action delay and jamming, significantly improving the movement response sensitivity of the magnetic valve core, improving the control accuracy of the control system, and expanding the application range of the solenoid valve in the field of precision control. At the same time, it eliminates the need to increase the current and enlarge the coil to increase the driving force, avoiding the disadvantages of increased energy consumption, coil aging, and bulky structure, thus taking into account both energy saving and miniaturization requirements. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the solenoid valve according to an embodiment of the present invention.

[0025] Figure 2 This is a front view of the solenoid valve according to an embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram of the coil winding direction of the solenoid valve according to an embodiment of the present invention.

[0027] Figure 4 This is an axial sectional view of the solenoid valve according to an embodiment of the present invention.

[0028] Figure 5 This is a radial sectional view of the solenoid valve according to an embodiment of the present invention.

[0029] Figure 6 A schematic diagram showing the current direction and magnetic pole direction of the first winding portion and the second winding portion when a first direction current is input to the coil of this embodiment of the invention.

[0030] Figure 7 This is a schematic diagram showing the force on the magnetic valve core when a first-direction current is input to the coil in an embodiment of the present invention.

[0031] Figure 8 This is a schematic diagram showing the current direction and magnetic pole direction of the first winding portion and the second winding portion when a second direction current is input to the coil in an embodiment of the present invention.

[0032] Figure 9 This is a schematic diagram showing the force on the magnetic valve core when a second-direction current is input to the coil in an embodiment of the present invention.

[0033] Figure 10 Another schematic diagram showing the force on the magnetic valve core when a second directional current is input to the coil in an embodiment of the present invention.

[0034] Figure 11 Another schematic diagram showing the force on the magnetic valve core when a first-direction current is input to the coil in an embodiment of the present invention.

[0035] Figure 12 This is another structural schematic diagram of the solenoid valve according to an embodiment of the present invention.

[0036] Figure 13 This is a schematic diagram of an elastic element disposed within the flow guiding cavity according to an embodiment of the present invention.

[0037] Figure 14 This is a schematic diagram of a magnetic suction element installed on the valve body according to an embodiment of the present invention.

[0038] Explanation of icon numbers: 1. Valve body; 11. Coil separator ring; 12. Flow guide cavity; 121. Guide protrusion; 13. Reversing notch; 14. Reversing protrusion; 15. Wire groove; 16. First channel; 17. Second channel; 18. Third channel; 19. Guide protrusion; 110. Power connection point; 111. Flow channel; 2. Magnetic valve core; 3. Coil; 31. First winding section; 32. Second winding section; 4. Elastic components; 5. Magnetic components. Detailed Implementation

[0039] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0040] Solenoid valves, as indispensable actuators in the field of automation control, are widely used in comfort systems, fluid transportation, precision instruments, automobile manufacturing, and many other fields. Their core working principle involves generating an electromagnetic field through an energized coil, which drives a magnetic valve core within the valve body to slide axially, thereby controlling the flow path. The magnitude of the electromagnetic force acting on the valve core directly determines its movement response sensitivity and sealing performance, making it a core factor affecting the reliability of the solenoid valve. In existing technologies, solenoid valve coils often employ a unidirectional winding structure, resulting in an uneven magnetic field distribution and limited magnetic field strength after energization. This allows only a single-sided axial driving force to be applied to the magnetic valve core, leading to insufficient effective force on the valve core under unit current input conditions. On one hand, this results in a weak force between the valve core and the port within the valve body, preventing the valve core from tightly fitting against the port and causing poor sealing. On the other hand, insufficient force on the valve core directly leads to poor movement response sensitivity.

[0041] To address the aforementioned technical problems, this application provides a solenoid valve that significantly increases the effective axial driving force on the magnetic valve core under unit current. This solenoid valve can be used for flow control of media such as gas and liquid. The structure of the solenoid valve is described below using the control of gas flow as an example. Example 1

[0042] like Figures 1 to 5 As shown, this embodiment provides a solenoid valve, including a valve body 1, a magnetic valve core 2 disposed within the valve body 1, and a coil 3 wound around the outer periphery of the valve body 1. The valve body 1 has a flow guide cavity 12 along its axial direction, and a first channel 16, a second channel 17, and a third channel 18 connected to the flow guide cavity 12. The first channel 16 and the second channel 17 are respectively located at both ends of the axial direction of the flow guide cavity 12, and their axes coincide. The third channel 18 is located beside the first channel 16. The first channel 16 is an air inlet channel for connecting to an external air source; the second channel 17 is an exhaust channel for discharging gas; and the third channel 18 is a channel communicating with an external gas-using device for gas delivery. In other possible embodiments, the positions of the first channel 16, the second channel 17, and the third channel 18 can be adaptively adjusted according to the actual application scenario, and the specific positions are not uniquely limited.

[0043] The magnetic valve core 2 is slidably disposed within the flow guiding cavity 12. Multiple guide protrusions 121 are circumferentially provided on the sidewall of the flow guiding cavity 12, extending axially along the flow guiding cavity 12. The outer periphery of the magnetic valve core 2 slides in cooperation with the guide protrusions 121, and a flow channel 111 is formed between the outer periphery of the magnetic valve core 2 and the sidewall of the flow guiding cavity 12 through the gap between adjacent guide protrusions 121. The first channel 16, the second channel 17, and the third channel 18 are all connected to the flow channel 111, realizing multi-channel medium transport or diversion control. The number of guide protrusions 121 is preferably 3-6, evenly distributed along the sidewall of the flow guiding cavity 12.

[0044] The guide protrusion 121 can accurately guide the magnetic valve core 2, ensuring that the magnetic valve core 2 slides smoothly along the axis in the flow guide cavity 12, avoiding tilting or offset of the magnetic valve core 2, reducing the contact area between the magnetic valve core 2 and the side wall of the flow guide cavity 12, reducing sliding friction, further improving the response sensitivity of the magnetic valve core 2, and avoiding the magnetic valve core 2 from jamming or delaying action due to excessive friction.

[0045] The magnetic valve core 2 has two position states, namely the first position state (e.g., Figure 7 (as shown) and second position state (as shown) Figure 9 (As shown). When the magnetic valve core 2 is in the first position, its end face near the first channel 16 abuts against the port of the first channel 16, achieving a seal on the first channel 16. When the magnetic valve core 2 is in the second position, its end face near the second channel 17 abuts against the port of the second channel 17, achieving a seal on the second channel 17. When the magnetic valve core 2 is in the first position, the third channel 18 is connected to the second channel 17 through the flow channel 111, allowing gas from the external gas-using device to be discharged through the second channel 17, thus realizing the exhaust function of the solenoid valve. When the magnetic valve core 2 is in the second position, the first channel 16 is connected to the third channel 18 through the flow channel 111, allowing external gas to be supplied to the third channel 18 through the first channel 16 and the flow channel 111, thereby realizing the gas supply function of the solenoid valve.

[0046] like Figure 6 and Figure 7 As shown, in this embodiment, a first directional current can be passed through the coil 3, and the magnetic valve core 2 is subjected to an axial force pointing towards the first channel 16 under electromagnetic action, so that the magnetic valve core 2 is in a first position state.

[0047] like Figure 13As shown, in another embodiment, an elastic element 4, such as a spring, can be provided in the flow guiding cavity 12. One end of the elastic element 4 is fixed in the flow guiding cavity 12 near the second channel 17, and the other end abuts against the end face of the magnetic valve core 2 near the second channel 17, so that the magnetic valve core 2 is normally in the first position state.

[0048] like Figure 14 As shown, in another embodiment, a magnetic attractor 5 can also be provided on the valve body 1 to apply a magnetic attraction force to the magnetic valve core 2 so that the magnetic valve core 2 is in a first position state.

[0049] like Figure 8 and Figure 9 As shown, when the coil 3 is supplied with a current in the second direction, the magnetic valve core 2 is subjected to an axial force pointing towards the second channel 17 under electromagnetic action, thereby driving the magnetic valve core 2 to move along the flow guide cavity 12 towards the second channel 17. The end face of the magnetic valve core 2 near the second channel 17 abuts against the port of the second channel 17, thereby sealing the second channel 17.

[0050] It should be noted that the first direction is specifically counterclockwise (viewed from the end face where the second channel 17 of valve body 1 is located), such as... Figure 6 The arrow on the right side points in a clockwise direction (when viewed from the end face where the second channel 17 of valve body 1 is located). Figure 6 The arrows on the left side of the middle point indicate that the first and second directions are opposite to each other.

[0051] like Figure 2 and Figure 3 As shown, the outer periphery of the valve body 1 is provided with a wire groove 15, and the coil 3 is wound in the wire groove 15. The wire groove 15 is provided with a coil separator ring 11. After the wire is wound from one side of the coil separator ring 11, the winding direction is changed by the coil separator ring 11 and then the wire is wound on the other side of the coil separator ring 11 to form the coil 3. After the coil 3 is energized, the two ends of the magnetic valve core 2 generate a coaxial force simultaneously to drive the magnetic valve core 2 to move axially in the flow guide cavity 12. The coil separator ring 11 divides the coil 3 into a first winding part 31 and a second winding part 32. The first winding part 31 and the second winding part 32 achieve opposite winding directions through a reversing structure, and the first winding part 31 and the second winding part 32 have the same number of turns.

[0052] It should be noted that the valve body 1 is also equipped with two electrical connection points 110, which are electrically connected to an external power source to supply power to the coil 3. After one end of the wire is connected to one electrical connection point 110, it begins to wind within the wire groove 15. After winding in the first winding section 31, the wire is reversed by a reversing structure and continues winding. After winding in the second winding section 32, the wire passes through the reversing structure and connects to the other electrical connection point 110. It should be noted that the two electrical connection points 110 are identical; one is the starting connection point and the other is the ending connection point. During winding, the two electrical connection points 110 are selected as either the starting or ending connection point according to actual needs.

[0053] A groove 15 is provided on the outer periphery of the valve body 1, which can accurately position and limit the coil 3, preventing loosening or displacement during coil 3 winding, ensuring the regularity of coil 3 winding, and maintaining the stable relative position of coil 3 with valve body 1 and magnetic valve core 2, ensuring that the magnetic field can accurately act on magnetic valve core 2. The coil separator ring 11 is set in the groove 15, which can accurately divide the coil 3 into a first winding part 31 and a second winding part 32, making the boundary between the two winding areas clear, avoiding winding crossing and confusion, and ensuring that the first winding part 31 and the second winding part 32 are wound in opposite directions. This ensures that the magnetic field generated by the coil 3 after being energized can form a driving force in the same direction at both ends of the magnetic valve core 2, maximizing the driving force of the magnetic valve core 2 under unit current.

[0054] The axis of coil 3 coincides with the axis of magnetic valve core 2, and both ends of coil 3 cover the axial movement range of magnetic valve core 2. This coincidence ensures that the magnetic field generated by coil 3 after energization is evenly distributed around the outer periphery of magnetic valve core 2, resulting in uniform force on both ends of magnetic valve core 2. This prevents uneven force distribution due to magnetic field deviation, thus preventing jamming during movement and improving the smoothness and responsiveness of magnetic valve core 2. The fact that both ends of coil 3 cover the axial movement range of magnetic valve core 2 means that regardless of its position within the guide cavity 12, both ends of magnetic valve core 2 remain within the magnetic field range generated by coil 3. This ensures a continuous and stable coaxial force, guaranteeing sufficient driving force throughout movement and preventing a decrease in driving force due to movement exceeding the magnetic field range. This ensures timely and stable response of magnetic valve core 2, improving the control accuracy and reliability of the solenoid valve.

[0055] like Figure 7 and Figure 9 As shown, the magnetic pole of the magnetic valve core 2 near the first channel 16 is the S pole, and the magnetic pole of the end near the second channel 17 is the N pole.

[0056] like Figure 6 and Figure 7 As shown, when a first-direction current is input to coil 3, the current in the second winding section 32 is the first-direction current. The winding direction of the first winding section 31 is opposite to that of the second winding section 32, therefore the current in the first winding section 31 is the second-direction current. At this time, the magnetic field generated by the first winding section 31 has the N pole near the end of the first channel 16 and the S pole near the end of the coil separator ring 11; the magnetic field generated by the second winding section 32 has the N pole near the end of the second channel 17 and the S pole near the end of the coil separator ring 11; the S pole of the magnetic valve core 2 is located within the magnetic field of the first winding section 31, and this magnetic field exerts a force on the magnetic valve core 2 pointing towards the first channel 16; the N pole of the magnetic valve core 2 is located within the magnetic field of the second winding section 32, and this magnetic field exerts a force on the magnetic valve core 2 pointing towards the first channel 16; thus, when a first-direction current is input to coil 3, the magnetic forces of the two magnetic fields on the magnetic valve core 2 are superimposed. The effective axial force on the magnetic valve core 2 under unit current is increased, which increases the force exerted by the end face of the magnetic valve core 2 near the port of the first channel 16, thereby improving the sealing performance of the first channel 16.

[0057] like Figure 8 and Figure 9 As shown, when a second-direction current is input into coil 3, the current in the second winding section 32 is the second-direction current. The direction of the first winding section 31 is opposite to that of the second winding section 32, therefore the current direction of the first winding section 31 is the first direction. At this time, the magnetic field generated by the first winding section 31 has the S pole near the end of the first channel 16 and the N pole near the end of the coil separator ring 11; the magnetic field generated by the second winding section 32 has the S pole near the end of the second channel 17 and the N pole near the end of the coil separator ring 11; the S pole of the magnetic valve core 2 is located in the magnetic field of the first winding section 31, and this magnetic field exerts a force on the magnetic valve core 2 pointing towards the second channel 17; the N pole of the magnetic valve core 2 is located in the magnetic field of the second winding section 32, and this magnetic field exerts a force on the magnetic valve core 2 pointing towards the second channel 17; thus, when a second-direction current is input into coil 3, the magnetic forces of the two magnetic fields on the magnetic valve core 2 are superimposed. The effective axial force on the magnetic valve core 2 under unit current is increased, thereby driving the magnetic valve core 2 to move rapidly along the flow guide cavity 12 toward the second channel 17. The end face of the magnetic valve core 2 near the second channel 17 abuts against the port of the second channel 17, which increases the force exerted by the end face of the magnetic valve core 2 near the second channel 17 against the port of the second channel 17, thus improving the sealing performance of the second channel 17.

[0058] It should be noted that, as Figure 10 and Figure 11As shown, in another embodiment, the magnetic core 2 has an N pole at the end near the first channel 16 and a 2 pole at the end near the second channel 17. When the first channel 16 is blocked, the coil 3 receives a second directional current. The magnetic field generated by the first winding portion 31 has an S pole at the end near the first channel 16 and an N pole at the end near the coil separator ring 11; the magnetic field generated by the second winding portion 32 has an S pole at the end near the second channel 17 and an N pole at the end near the coil separator ring 11. When the second channel 17 is blocked, the coil 3 receives a first directional current. The magnetic field generated by the first winding portion 31 has an N pole at the end near the first channel 16 and an S pole at the end near the coil separator ring 11; the magnetic field generated by the second winding portion 32 has an N pole at the end near the second channel 17 and an S pole at the end near the coil separator ring 11.

[0059] It should be noted that when the magnetic valve core 2 moves axially within the flow guiding cavity 12, its two end faces are respectively located within the axial regions of the flow guiding cavity 12 corresponding to the first winding portion 31 and the second winding portion 32. Throughout the entire axial movement, the two end faces of the magnetic valve core 2 always correspond to the magnetic field regions of the first winding portion 31 and the second winding portion 32, ensuring that the two ends of the magnetic valve core 2 are continuously subjected to the coaxial force generated by the first winding portion 31 and the second winding portion 32. This maximizes the stability and sufficiency of the force on the magnetic valve core 2, avoids fluctuations in the driving force of the magnetic valve core 2, and prevents problems such as delayed movement, jamming, or loose sealing caused by a sudden drop in driving force.

[0060] like Figure 1 and Figure 2 As shown, the coil separating ring 11 is a flange protruding from the outer periphery of the valve body 1. The flange is integrally formed with the valve body 1 and is higher than the wire groove 15. The flange has a reversing structure that can change the winding direction of the coil 3. The coil separating ring 11 is a flange protruding from the outer periphery of the valve body 1 and is integrally formed with the valve body 1. It has a simple structure and is easy to process. It can effectively separate the coil 3, ensure that the winding areas on both sides of the coil 3 are clear, and avoid uneven magnetic field distribution caused by winding chaos. The reversing structure on the flange can realize smooth reversal when the wire is wound, ensure that the winding directions on both sides of the coil 3 are precisely opposite, and thus ensure that the magnetic field generated by the coil 3 after being energized can form a coaxial force at both ends of the magnetic valve core 2. It avoids the magnetic field from canceling each other due to unsmooth reversal or winding deviation, and ensures the stability of the driving force enhancement effect. At the same time, the flange structure can play a certain limiting role for the coil 3, prevent the coil 3 from axial displacement during operation, ensure the relative position stability of the coil 3 and the magnetic valve core 2, and further ensure the reliability and consistency of the solenoid valve operation.

[0061] like Figure 1and Figure 2 As shown, the commutation structure is a commutation notch 13 provided on the flange. The commutation notch 13 is used for commutation during wire winding, so that the winding directions of the wires on both sides of the coil separator ring 11 are opposite. The size of the commutation notch 13 is designed according to the wire diameter, and its size is at least twice the wire diameter. At the same time, the shape of the commutation notch 13 can be set as U-shaped, inverted V-shaped, etc., so as to hook the wire to achieve commutation during winding. In addition, the number of commutation notches 13 is designed according to the actual winding requirements, and one, two or more can be set. In this embodiment, two are set, and the two commutation notches 13 are symmetrically arranged.

[0062] The reversing notch 13 has a simple structure and low processing cost. It can be directly opened on the flange without the need for additional complex components, facilitating mass production. During wire winding, the reversing notch 13 enables smooth reversal, making operation convenient. It can precisely control the winding direction on both sides of the coil 3 to be opposite, ensuring that the magnetic field generated by the coil 3 after energization forms a driving force in the same direction at both ends of the magnetic valve core 2, guaranteeing the driving force enhancement effect. At the same time, the reversing notch 13 can also limit and guide the wire, preventing the wire from deviating or tangling during reversal, ensuring the regularity of the winding, thereby ensuring the uniformity of the magnetic field distribution of the coil 3, further improving the stability of the magnetic valve core 2 under force, indirectly improving the movement response sensitivity and sealing performance of the magnetic valve core 2, while reducing the operational difficulty during the winding process and improving production efficiency.

[0063] like Figure 11 As shown, in another embodiment, the commutation structure is a commutation protrusion 14 disposed on the flange. The commutation protrusion 14 is used for commutation during wire winding, so that the winding directions of the wires on both sides of the coil separator ring 11 of the coil 3 are opposite. The commutation protrusion 14 is cylindrical and integrally formed with the flange, and its number is consistent with the commutation notch 13. The commutation structure adopts a protrusion structure, which can also play a stable guiding and limiting role for the wound wires, and can prevent the wires from slipping or deviating during the commutation process, ensuring the consistency and accuracy of the winding direction on both sides of the coil 3, thereby ensuring the stability of the magnetic field distribution after the coil 3 is energized, so that the two ends of the magnetic valve core 2 obtain a uniform and stable coaxial force, and improve the stability and reliability of the driving force.

[0064] It should be noted that in this embodiment, the magnetic valve core 2 is a one-piece permanent magnet with a cylindrical shape. In other possible embodiments, the magnetic valve core 2 can also be configured as a composite, i.e., an iron part in the middle with magnets at both ends of the iron part. In addition, to further enhance the sealing performance, sealing gaskets can be provided at both ends of the magnetic valve core 2, and sealing protrusions that cooperate with the sealing gaskets can be provided at the ports of the first channel 16 and the second channel 17. The sealing protrusions are annular.

[0065] In summary, by changing the winding direction of the wires through the coil separator ring 11, the coil 3 forms a structure with different winding directions on both sides. After energization, the magnetic valve core 2 can generate coaxial forces simultaneously at both ends. Compared with the existing technology where the valve core is only subjected to force on one side, this significantly increases the effective axial driving force of the magnetic valve core 2 per unit current, solving the problem of insufficient driving force of the magnetic valve core 2. On the one hand, sufficient driving force allows the magnetic valve core 2 to effectively overcome friction during movement, quickly and tightly fitting onto the port, completely solving the problems of poor sealing and media leakage, and improving the reliability of the solenoid valve. On the other hand, the increased driving force can accelerate the sliding speed of the magnetic valve core 2 in the guide cavity 12, avoiding action delay and jamming, significantly improving the movement response sensitivity of the magnetic valve core 2, improving the control accuracy of the control system, and expanding the application range of the solenoid valve in the field of precision control. At the same time, it eliminates the need to increase the current and enlarge the coil 3 to increase the driving force, avoiding the disadvantages of increased energy consumption, coil 3 aging, and bulky structure, thus taking into account both energy saving and miniaturization requirements. Example 2

[0066] This embodiment provides a diversion and conduction system, including the solenoid valve of Embodiment 1, as well as an external air source, an external air-consuming device, and a control module. The external air source is connected to the first channel 16 of the solenoid valve, and the external air-consuming device is connected to the third channel 18 of the solenoid valve. The control module is electrically connected to the power connection point 110 of the solenoid valve and is used to control the direction and on / off of the current flowing through the coil 3, thereby controlling the air supply and exhaust status of the solenoid valve and realizing the medium supply and discharge control of the external air-consuming device.

[0067] In the description of this invention, it should be understood that terms such as "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0068] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0069] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A solenoid valve, characterized in that, The device includes a valve body, a magnetic valve core disposed within the valve body, and a coil wound around the outer periphery of the valve body. A coil separator ring is provided on the outer periphery of the valve body. After a wire is wound from one side of the coil separator ring, the winding direction is changed through the coil separator ring, and the wire continues to be wound on the other side of the coil separator ring to form the coil. A flow guiding cavity is provided along its axial direction within the valve body, and the magnetic valve core is slidably disposed within the flow guiding cavity. When the coil is energized, both ends of the magnetic valve core simultaneously generate a coaxial force to drive the magnetic valve core to move axially within the flow guiding cavity.

2. The solenoid valve according to claim 1, characterized in that, The coil separator ring is a flange protruding around the outer periphery of the valve body, and the flange is provided with a reversing structure that can change the winding direction of the coil.

3. The solenoid valve according to claim 2, characterized in that, The commutation structure includes a commutation notch provided on the flange. The commutation notch is used to commutate the winding direction of the wires during winding, so that the winding directions of the wires on both sides of the coil separator ring are opposite.

4. The solenoid valve according to claim 2, characterized in that, The commutation structure includes a commutation protrusion disposed on the flange. The commutation protrusion is used to commutate the winding direction of the wires during winding, so that the winding direction of the wires on both sides of the coil separator ring is opposite.

5. The solenoid valve according to claim 2, characterized in that, The outer circumference of the valve body is provided with a wire groove, the coil separator ring is disposed in the wire groove, the coil is wound in the wire groove, and the coil separator ring divides the coil into a first winding part and a second winding part. The first winding part and the second winding part achieve opposite winding directions through the reversing structure.

6. The solenoid valve according to claim 5, characterized in that, The axis of the coil coincides with the axis of the magnetic valve core, and the two ends of the coil in the axial direction cover the axial movement range of the magnetic valve core.

7. The solenoid valve according to claim 6, characterized in that, When the magnetic valve core moves axially within the flow guiding cavity, the two end faces of the magnetic valve core are respectively located within the axial regions of the flow guiding cavity corresponding to the first winding portion and the second winding portion.

8. The solenoid valve according to claim 5, characterized in that, The valve body is also provided with a first channel and a second channel that are connected to the flow guide cavity. When the coil is energized, the magnetic valve core moves axially along the flow guide cavity under electromagnetic drive, thereby blocking the first channel or the second channel.

9. The solenoid valve according to claim 8, characterized in that, The sidewall of the flow guide cavity is provided with a plurality of guide protrusions, which extend along the axial direction of the flow guide cavity. The outer peripheral side of the magnetic valve core slides in cooperation with the guide protrusions. A flow channel is formed between the outer peripheral side of the magnetic valve core and the sidewall of the flow guide cavity through the gap between adjacent guide protrusions. The valve body is also provided with a third channel that communicates with the flow channel.

10. A current shunting and conduction system, characterized in that, Includes the solenoid valve as described in any one of claims 1 to 9.

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