A modulated inductive device

Abstract

The application discloses a wave modulation inductance device, which comprises a device body, one side of the device body is provided with a containing cavity, the containing cavity is provided with a first wave modulation inductance and a second wave modulation inductance, the first wave modulation inductance and the second wave modulation inductance are arranged in parallel, and the same name ends of the first wave modulation inductance and the second wave modulation inductance are reversely connected in series. The application can improve the reliability and stability of the wave modulation inductance under high-power pulse current.

Description

Technical Field

[0001] This application belongs to the field of inductor technology, and specifically relates to a modulated inductor device. Background Technology

[0002] Electromagnetic forming, a typical high-speed forming technology, has been applied to bulging, welding, and hole strengthening of sheet and tube components. Electromagnetic forming utilizes a pulsed power supply to discharge a coil. The current passing through the coil creates a pulsed magnetic field in the space behind it. Under the influence of this magnetic field, eddy currents are induced in the metal workpiece, generating a pulsed electromagnetic force. The workpiece is then shaped under the drive of this electromagnetic force. Compared to other mechanical forming processes, electromagnetic forming avoids multiple forming steps and does not use cutting fluid.

[0003] An electromagnetic forming system typically includes a pulse power supply system, a drive coil, a metal workpiece, a forming die, and a pressing device. The pulse power supply generally consists of multiple capacitor banks. A signal is sent to the control system via a terminal to control the closing of a discharge switch, causing a pulsed current to flow through the drive coil. This current has a high amplitude, typically tens of kA, generating a high pulsed magnetic field near the metal workpiece. The eddy currents induced in the metal workpiece couple with the spatial magnetic field, producing an electromagnetic force that repels the drive coil, thus causing deformation of the metal workpiece.

[0004] In a capacitor-storage pulse power supply system, the tuning inductor is an important component for pulse current waveform adjustment. Its inductance value is closely related to the magnitude of the pulse current peak and the peak rise time, and it also plays the role of intermediate energy storage. The general requirements of the pulse power supply for the tuning inductor are: (1) Low self-loss: it should not consume too much energy and affect the output efficiency of the pulse power supply; (2) High energy density: the tuning inductor also plays the role of intermediate energy storage and should be able to withstand pulse currents with large peak values; (3) Low leakage flux: the operating peak current of the pulse power supply module is tens or even hundreds of kiloamperes, and a very high peak pulse magnetic field will be generated around the tuning inductor, which will interfere with the normal operation of surrounding electronic instruments and equipment; (4) Lightweight, small in size, and easy to assemble. In the existing pulse power supply system, the tuning inductor has certain limitations in meeting these requirements. The inductor's tolerance, safety and magnetic field shielding effect are still insufficient, and a mature and reliable solution needs to be designed. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this application is to provide a modulated wave inductor device that can effectively suppress electromagnetic interference, reduce electromagnetic force impact, and improve the reliability and stability of the modulated wave inductor under high-power pulse current.

[0006] To achieve the above objectives, this application provides the following technical solution: A tuning inductor device, the device comprising: a device body, a receiving cavity provided on one side of the device body, a first tuning inductor and a second tuning inductor disposed in the receiving cavity; the first tuning inductor and the second tuning inductor are arranged in parallel, and the same-name terminals of the first tuning inductor and the second tuning inductor are connected in reverse series.

[0007] Optionally, the first and second modulation inductors have the same structure, both including: An insulating outer cylinder and an insulating inner cylinder are fitted together, and the two ends of the insulating outer cylinder and the insulating inner cylinder are respectively sealed with a first insulating cover and a second insulating cover.

[0008] Optionally, a connecting post is provided between the first insulating cover and the second insulating cover.

[0009] Optionally, the outer insulating cylinder is flush with the upper and lower end faces of the inner insulating cylinder.

[0010] Optionally, the outer side of the insulating inner cylinder is provided with uniformly distributed grooves along the axial direction of the cylinder, and a solenoid is provided in the groove.

[0011] Optionally, the solenoid is a hollow square copper tube.

[0012] Optionally, a copper capillary wick is provided inside the solenoid.

[0013] Optionally, openings are provided on opposite sides of the insulating outer cylinder, and a first inductor lead and a second inductor lead are respectively provided in the openings. The first inductor lead and the second inductor lead are respectively fixedly connected to the two ends of the solenoid.

[0014] Optionally, the first inductor lead and the second inductor lead include any of the following lead-out methods: radially outward, axially, obliquely at a specific angle with reference to the X-axis in the XY plane of the cross section, and radially inward.

[0015] Optionally, the device further includes a shielding frame disposed outside the main body of the device.

[0016] Compared with the prior art, the beneficial effects of this application are as follows: (1) This application can improve the reliability and stability of the tuning inductor. By adopting a solenoid structure, thicker copper wire winding and insulating skeleton design, this invention enhances the heat dissipation performance of the inductor, improves the current carrying capacity, and effectively reduces the influence of eddy currents and electromagnetic forces, thereby improving the reliability and stability of the tuning inductor.

[0017] (2) This application can improve the efficiency and performance of the power supply system. By using thicker copper wire to wind and placing two tuning inductors in parallel, it not only reduces the resistance and increases the output efficiency of the high-power pulse power supply system, but also reduces the eddy currents and electromagnetic forces on the frame, further improving the performance of the power supply system.

[0018] (3) This application can enhance the withstand capability and safety of the inductor. By designing thicker copper wire and insulating skeleton, the present invention improves the current carrying capacity and resistance to electrodynamic impact of the inductor, ensures the stable operation of the inductor under high current pulse conditions, and enhances the safety of the system.

[0019] (4) This application can optimize the magnetic field shielding effect. By adopting a shielding frame with ferromagnetic shielding method, it effectively solves the problem of magnetic field shielding of low frequency components, further optimizes the performance of the system, and improves the overall reliability and stability of the system. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a modulation inductor device provided in one embodiment of this application; Figure 2 This is a schematic diagram of the structure of a tuning inductor provided in one embodiment of this application; Figure 3 yes Figure 2 The diagram shows the connection between the solenoid and the inner insulating cylinder in the tuning inductor. Figure 4 This is a schematic diagram of a solenoid. Figure 5 This is a schematic diagram of different lead-out methods for inductor leads; Figure 6 yes Figure 5 A columnar schematic diagram showing the resultant electromagnetic force on the lead wire under different lead-out methods; Figure 7 This is a schematic diagram of the distribution of the spatial magnetic field vector along the path BX around the tuning inductor provided in another embodiment of this application; Figure 8 This is a schematic diagram of the distribution of the spatial magnetic field vector along the path BY around the tuning inductor provided in another embodiment of this application; Figure 9 This is a schematic diagram of the electromagnetic force on the frame when using a single coil, provided in another embodiment of this application; Figure 10 This is a schematic diagram of the electromagnetic force on the frame when there are two coils, provided in another embodiment of this application; Figure 11 The magnetic field strength distribution on a 5mm thick low-carbon silicon steel shielding plate is shown. Figure 12 This is a diagram showing the magnetic field strength distribution at a distance of 80 mm from the shielding plate.

[0021] The annotations in the attached figures are explained as follows: 1. First modulation inductor; 1-1. First insulating cover; 1-2. Second insulating cover; 1-3. Connecting post; 1-4. Insulating outer cylinder; 1-5. Insulating inner cylinder; 1-6. Solenoid; 1-7. First lead-out piece; 1-8. Second lead-out piece; 2. Second modulation inductor; 3. Shielding frame; 4. Connecting copper busbar; 5. Main body of the device; 6. Insulating support components. Detailed Implementation

[0022] Specific embodiments of this application will now be described in detail with reference to the accompanying drawings. While specific embodiments of this application are shown in the drawings, it should be understood that this application can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of this application and to fully convey the scope of this application to those skilled in the art.

[0023] It should be noted that certain terms are used in the specification and claims to refer to specific components. Those skilled in the art will understand that different terms may be used to refer to the same component. This specification and claims do not distinguish components based on differences in terminology, but rather on differences in function. The terms "comprising" or "including" used throughout the specification and claims are open-ended and should be interpreted as "comprising but not limited to." The following descriptions in the specification are preferred embodiments for carrying out this application; however, these descriptions are for the purpose of understanding the general principles of the specification and are not intended to limit the scope of this application. The scope of protection of this application shall be determined by the appended claims.

[0024] To facilitate understanding of the embodiments of this application, the following will provide further explanation and description with reference to the accompanying drawings and specific embodiments, and the accompanying drawings do not constitute a limitation on the embodiments of this application.

[0025] Figure 1 This is a schematic diagram of the structure of a modulation inductor device provided in an exemplary embodiment of this application, as shown below. Figure 1 As shown, the device includes: a device body 5, a receiving cavity is provided on one side of the device body 5, a first tuning inductor 1 and a second tuning inductor 2 are provided in the receiving cavity, the first tuning inductor 1 and the second tuning inductor 2 are arranged in parallel, and the same-name terminals of the first tuning inductor 1 and the second tuning inductor 2 are connected in reverse series.

[0026] In this embodiment, the "same-name terminal" refers to the terminal where the first tuning inductor 1 and the second tuning inductor 2 have the same magnetic polarity. That is, when the first tuning inductor 1 and the second tuning inductor 2 carry current in the same direction, the magnetic field generated is in the same direction at the same terminal. The "same-name terminal in reverse series connection" means that when the first tuning inductor 1 and the second tuning inductor 2 are connected in series, the starting terminal of the first tuning inductor 1 is in the direction of the preceding power supply, and the starting terminal of the second tuning inductor 2 is in the direction of the load. This results in the currents in the two inductors flowing in opposite directions, and thus the magnetic fields generated are also in opposite directions. This creates a locally closed magnetic flux loop, effectively reducing external magnetic field leakage. Furthermore, reverse series connection allows for better control of the synthesized inductance value, maintaining a more stable shaping effect when the pulse current changes rapidly, which helps improve the accuracy of waveform control. If the first tuning inductor 1 and the second tuning inductor 2 are connected in series with the same terminal in the forward direction, the current in the two inductors will be in the same direction and the magnetic field will also be in the same direction, which will enhance the overall magnetic field strength and thus increase the leakage of the external magnetic field. This is not conducive to electromagnetic shielding, and will also bring higher eddy current losses and heat generation, resulting in a decrease in the life of the inductor.

[0027] Additionally, it should be noted that when the first tuning inductor 1 and the second tuning inductor 2 are arranged in parallel, the electromagnetic forces generated by the opposite currents flowing through the two inductors can cancel each other out, thereby greatly reducing the mechanical impact on the supporting structure. Furthermore, the parallel arrangement allows for a more uniform magnetic field distribution around the two inductors, and the magnetic flux lines can be locally closed, which is beneficial for achieving the magnetic shielding effect of ferromagnetic materials.

[0028] It should be further noted that if the first modulation inductor 1 and the second modulation inductor 2 are not arranged in a parallel configuration, the electromagnetic forces they generate will not be effectively canceled out, resulting in uneven stress on the first modulation inductor 1 and the second modulation inductor 2, or even vibration damage. Simultaneously, the non-parallel configuration will cause asymmetrical magnetic field distribution, easily triggering electromagnetic interference and thus reducing the overall magnetic shielding effect. Furthermore, the non-parallel configuration is also detrimental to optimizing the lead wire arrangement, potentially increasing the stress on the lead wires, affecting the electrical reliability and lifespan of the device, and thus weakening the overall device's control accuracy and stability of the pulse current waveform.

[0029] In another exemplary embodiment, the first modulation inductor 1 and the second modulation inductor 2 have the same structure, such as... Figure 2 As shown, the first tuning inductor 1 includes an insulating outer cylinder 1-4 and an insulating inner cylinder 1-5 that are sleeved together. The two ends of the insulating outer cylinder 1-4 and the insulating inner cylinder 1-5 are respectively sealed with a first insulating cover 1-1 and a second insulating cover 1-2.

[0030] In this embodiment, the insulating inner cylinder 1-5 and the insulating outer cylinder 1-4 are sleeved together to form a double-layer shell, which can improve the device's resistance to deformation under high electromagnetic force and external impact. In addition, the insulating cover makes the fit between the insulating inner cylinder 1-5 and the insulating outer cylinder 1-4 more stable, which helps to prevent the tuning inductor from loosening or resonating under pulse operation.

[0031] In another exemplary embodiment, a connecting post 1-3 is provided between the first insulating cover 1-1 and the second insulating cover 1-2.

[0032] In this embodiment, the connecting post 1-3 is disposed between the first insulating cover 1-1 and the second insulating cover 1-2, forming an internal support bracket between the first insulating cover 1-1 and the second insulating cover 1-2. This helps to enhance the overall mechanical strength and rigidity of the device and prevents the inner insulating cylinder 1-5 and the outer insulating cylinder 1-4 from deforming due to electromagnetic force or thermal expansion and contraction under strong pulse current. It also helps to fix and stabilize the winding structure, prevent the coil from loosening and shifting, and ensure the stability of the modulation inductor's performance.

[0033] In another exemplary embodiment, the insulating outer cylinder 1-4 is flush with the upper and lower end faces of the insulating inner cylinder 1-5.

[0034] In this embodiment, the outer insulating cylinder 1-4 and the inner insulating cylinder 1-5 are arranged flush, which helps to improve the structural symmetry and overall packaging accuracy of the inductor assembly. This allows the first insulating cover 1-1 and the second insulating cover 1-2 to be subjected to uniform stress, resulting in better sealing. Furthermore, this design facilitates the simultaneous positioning and fixing of the first insulating cover 1-1 and the second insulating cover 1-2 with the inner and outer cylinders, improving assembly efficiency and consistency, and reducing the possibility of internal stress concentration. Moreover, the flush arrangement also facilitates the uniform winding of the coil on the inner insulating cylinder 1-5 and ensures consistent electromagnetic performance of the winding throughout the entire axial direction, thereby improving the operational stability and reliability of the tuning inductor.

[0035] It should be noted that if the upper and lower surfaces of the insulating outer cylinder 1-4 and the insulating inner cylinder 1-5 are not flush, gaps or uneven stress may occur during the installation of the first insulating cover 1-1 and the second insulating cover 1-2. This not only affects the sealing performance of the package but may also cause the cylinder to crack or the insulation to fail due to stress concentration. Furthermore, it will lead to inconsistent starting and ending positions of the windings in the axial direction, resulting in uneven coil arrangement and unstable inductance distribution, which in turn affects the accuracy of the modulation current control.

[0036] In another exemplary embodiment, such as Figure 3 As shown, the outer side of the insulating inner cylinder 1-5 is provided with uniformly distributed grooves along the axial direction of the cylinder (not shown in the figure), and a solenoid 1-6 is provided in the groove.

[0037] In this embodiment, the groove adopts a 30° spiral angle design. Compared with the traditional horizontal arrangement, its advantage lies in that this design can significantly extend the cooling path of the coil, allowing heat to spread along a longer path. This helps to evenly diffuse heat in the axial and radial directions, thereby effectively increasing the overall heat dissipation area. Consequently, it can improve the working stability and service life of the tuning inductor under high-frequency pulse current environments. In addition, this design can also improve the space utilization of coil winding, allowing the coil to be wound more compactly on the insulating inner cylinder, thus helping to improve the tuning accuracy of the tuning inductor.

[0038] Furthermore, the groove body adopts a horizontal groove structure. Compared with the complex spiral groove, the horizontal groove can be formed by one-time transverse cutting on a CNC lathe or milling machine. The processing is simple and stable, which can significantly reduce the requirements for equipment and the dependence on the operator's technical level. The processing time can be reduced by about 30%, making it very suitable for large-scale mass production. More importantly, the straight groove wall of the horizontal groove facilitates uniform insulation treatment. A 0.1mm thick polyimide coating can be stably sprayed. Tests have shown that compared with the spiral curved surface structure, the coating uniformity can be improved by about 40%, which can significantly improve the insulation quality and effectively ensure the electrical isolation performance between the coil and the insulating cylinder, ensuring that the insulation resistance reaches more than 100MΩ, thereby improving the safety and reliability of the tuning inductor.

[0039] In another exemplary embodiment, such as Figure 4 As shown, the solenoids 1-6 are hollow square copper tubes.

[0040] In this embodiment, the hollow square copper tube design of solenoids 1-6 aims to balance conductivity, heat dissipation efficiency, and structural stability. Compared to traditional round copper wire or solid conductors, the hollow square copper tube has a larger surface area, significantly improving heat dissipation per unit length. This facilitates the rapid release of heat generated by high-frequency pulse currents, preventing excessive temperature rise and performance degradation. Simultaneously, the square cross-section allows for closer winding and smaller gaps between coils, improving space utilization and overall coil turn uniformity. This results in a more stable inductance distribution, aiding in precise pulse waveform control. Furthermore, the hollow structure reduces coil weight and electromagnetic inertia, improving high-frequency response characteristics, tuning efficiency, and overall device reliability. In summary, the application of hollow square copper tubes in tuning inductors not only optimizes thermal management and structural design but also enhances the electrical performance and dynamic response capabilities of tuning inductors.

[0041] In another exemplary embodiment, a copper capillary wick is provided inside the solenoid 1-6.

[0042] In this embodiment, the wick is fitted to the inner wall of solenoids 1-6, forming an annular cavity as the main flow channel. This main flow channel is filled with a low-boiling-point phase change medium, such as FC-72, to form a miniature phase change cooling system. When the tuning inductor operates, a large current flows through the copper tube, generating significant heat, causing the phase change medium to rapidly vaporize in the heating zone, forming steam. The steam then condenses into liquid on the surface of the wick. The heat released by condensation is carried away by the coolant flowing in the main flow channel, while the condensate flows back to the high-temperature zone driven by the capillary wick, forming a continuous liquid-vapor phase change cycle.

[0043] The above design achieves a dual cooling mechanism of "phase change enhancement + convective heat dissipation". On the one hand, the phase change vaporization process absorbs a large amount of latent heat, significantly improving the thermal conductivity per unit volume and rapidly suppressing local temperature rise; on the other hand, the wick promotes efficient condensate return, ensuring the heat source area is continuously covered by liquid and preventing hot spots from drying out. Simultaneously, the coolant flowing in the main channel can promptly remove the heat released from the condensation zone, thereby enhancing convective heat transfer efficiency.

[0044] Overall, by installing copper capillary wicks inside solenoids 1-6, not only can the heat dissipation performance of the solenoids be improved, effectively supporting long-term reliable operation under high-frequency and high-power pulse working environment, but the temperature rise control stability of the tuning inductor can also be further guaranteed.

[0045] In another exemplary embodiment, openings are provided on opposite sides of the insulating outer cylinder 1-4, and a first inductor lead 1-7 and a second inductor lead 1-8 are respectively provided in the openings. The first inductor lead 1-7 and the second inductor lead 1-8 are respectively fixedly connected to the two ends of the solenoid 1-6.

[0046] In this embodiment, the first inductor lead-out piece 1-7 and the second inductor lead-out piece 1-8 serve as a bridge between the internal winding of the inductor and the external terminal, ensuring that the pulse current can be transmitted to the external load or other components efficiently and with low loss. Their installation in the opening of the insulating outer cylinder effectively shortens the conductive path, reducing contact resistance and energy loss. Simultaneously, the lead-out piece arrangement facilitates standardized wiring and maintenance operations, improving assembly efficiency and engineering controllability.

[0047] In another exemplary embodiment, the first inductor lead-out piece 1-7 and the second inductor lead-out piece 1-8 include any of the following lead-out methods: radially outward, axially, obliquely at a specific angle with reference to the X-axis in the XY plane of the cross section, and radially inward.

[0048] In this embodiment, as Figure 5As shown, the first inductor lead and the second inductor lead adopt different methods to adapt to different structural layouts and electromagnetic environments. For example, different lead methods include leading outward radially (S1), leading outward axially (S2), leading out at a certain angle with the X-axis in the XY plane of the cross section (e.g., 30° (S4), 45° (S3), 60° (S5) degrees), and leading outward radially (S6).

[0049] To quantify the electromagnetic environment under different lead configurations, this application conducted electromagnetic simulation analysis. An 80kA DC current was assumed to flow through the inductor, with the current density assumed to be uniformly distributed along the cross-section, and external interference ignored. A length of 100mm was taken along the path from S1 to S5, and a length of 60mm (reaching the center) was taken along the path from S6. The magnetic flux density distribution along paths BX and BY was calculated, and the results are as follows. Figure 7 and Figure 8 As shown ( Figure 7 This is a schematic diagram showing the distribution of the spatial magnetic field vector along path BX around the tuning inductor. Figure 8 (This is a schematic diagram showing the distribution of the spatial magnetic field vector along path BY around the tuning inductor). Within a range of approximately 4mm to 20mm from the lead-out point, the radial magnetic flux density on path S6 is slightly higher than that on other paths; and when path S6 is more than 10mm from the lead-out point, its axial magnetic flux density reaches as high as 3.5T, significantly higher than that on other paths. Simulation results show that the lead-out method of the inductor leads has a significant impact on its reliability. When the inductor leads are led radially inward, the electromotive force on the lead wire is the greatest, resulting in the worst reliability; conversely, when the lead wire is led radially outward, the electromotive force is the smallest, resulting in the best reliability.

[0050] also, Figure 6 A bar chart showing the electromagnetic force on the leads under different lead-out methods is presented. Simulation results clearly show that when the leads are radially inward (S6), the electromagnetic force is the greatest, which easily leads to stress concentration and increased vibration in the conductor, posing a high risk of structural fatigue. Conversely, when the leads are radially outward (S1), the electromagnetic force on the conductor is the smallest, with less electromagnetic interference, optimal mechanical stability, and the highest reliability. Oblique leads at different angles (S3–S5) exhibit moderate performance, with the force gradually increasing as it deviates from the radial outward direction. Therefore, the S1 method is preferentially recommended in structural design to ensure the electrical stability and mechanical reliability of the inductor leads under high-intensity pulse environments.

[0051] In another exemplary embodiment, the device further includes a shielding frame 3 disposed outside the main body 5 of the device.

[0052] In this embodiment, the shielding frame 3 is fixedly connected to the device body 5 through the insulating support 6, and covers the axial and radial outer sides of the first tuning inductor 1 and the second tuning inductor 2 to form a magnetic shielding space.

[0053] By setting up a shielding frame, the low-frequency magnetic field around the tuning inductor can be effectively shielded, ensuring the electromagnetic compatibility and system stability of the device under strong pulsed current conditions. In pulsed operation, the tuning inductor generates a strong low-frequency magnetic field. Without shielding, this can easily interfere with surrounding sensitive circuits (such as charging and monitoring units), and may even cause malfunctions or performance degradation. The shielding frame can guide the magnetic flux into the ferromagnetic material to form a closed loop, significantly reducing magnetic field leakage. Simulation results show that it can reduce the interference magnetic field strength from 3367 Gs to less than 23 Gs, effectively meeting the shielding requirement of 100~150 Gs and ensuring the electromagnetic safety and stable operation of the system.

[0054] This application addresses, for example Figure 9 The existing structure shown is a single modulated inductor, and the design of this application is as follows: Figure 10 The magnetic force of the modified modulation inductor device shown in the figure was simulated. The calculations showed that when using... Figure 9 When a single tuning inductor is shown, the maximum electromagnetic force density on the frame is 3.03 × 10⁻⁶. 8 N / m 3 And when adopting such Figure 10 When the modulation inductor device shown is used, the maximum electromagnetic force density on the frame is 2.89 × 10⁻⁶. 6 N / m 3 Calculations show that, compared to Figure 9 The single modulation inductor shown uses, for example Figure 10 The tuning inductor device designed in this application can reduce eddy currents and electromagnetic forces on the frame by 99%.

[0055] Figure 11 and Figure 12 Simulation results of the magnetic shielding effect of the shielding frame are presented respectively. Figure 11 The magnetic field strength distribution diagram after setting a 5mm thick low-carbon silicon steel shielding plate shows that the peak magnetic field strength on the surface of the shielding plate reaches 3367Gs on the side near the discharge module. Figure 12 The image shows the magnetic field strength distribution at a distance of 80mm from the shielding plate (simulating the installation location of the charger or monitoring unit). It indicates that the magnetic field strength at this location has significantly decreased to below 23Gs, far below the shielding requirement of 100-150Gs. Simulation results demonstrate that the ferromagnetic material used in the shielding frame effectively guides and seals magnetic flux, significantly reducing the leakage of low-frequency magnetic fields generated during the operation of the tuning inductor, thereby ensuring the electromagnetic safety of other sensitive devices in the system.

[0056] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A modulation inductor device, characterized in that, The device includes: The device body has a receiving cavity on one side, and a first tuning inductor and a second tuning inductor are disposed in the receiving cavity. The first and second tuning inductors are arranged in parallel, and the same-name terminals of the first and second tuning inductors are connected in reverse series. The first and second modulation inductors have the same structure, both including: An insulating outer cylinder and an insulating inner cylinder are fitted together, and the two ends of the insulating outer cylinder and the insulating inner cylinder are respectively sealed with a first insulating cover and a second insulating cover; The outer insulating cylinder is flush with the upper and lower end faces of the inner insulating cylinder; The outer side of the insulating inner cylinder is provided with uniformly distributed grooves along the axial direction of the cylinder. The grooves adopt a 30° spiral angle and a horizontal groove structure. A solenoid is provided in the groove.

2. The apparatus according to claim 1, characterized in that, A connecting post is provided between the first insulating cover and the second insulating cover.

3. The apparatus according to claim 1, characterized in that, The outer insulating cylinder is flush with the upper and lower surfaces of the inner insulating cylinder.

4. The apparatus according to claim 1, characterized in that, The solenoid is a hollow square copper tube.

5. The apparatus according to claim 1 or 4, characterized in that, The solenoid is equipped with a copper capillary wick.

6. The apparatus according to claim 5, characterized in that, The insulating outer cylinder has openings on opposite sides, and a first inductor lead and a second inductor lead are respectively installed in the openings. The first inductor lead and the second inductor lead are respectively fixedly connected to the two ends of the solenoid.

7. The apparatus according to claim 6, characterized in that, The first inductor lead and the second inductor lead include any of the following lead-out methods: radially outward, axially, obliquely at a specific angle with reference to the X-axis in the XY plane of the cross section, and radially inward.

8. The apparatus according to claim 1, characterized in that, The device also includes a shielding frame disposed outside the main body of the device.

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