High-ripple suppression type equipment low-noise linear power supply structure based on novel frequency amplification element and method of high-ripple suppression type equipment low-noise linear power supply structure

Abstract

The invention relates to the technical field of power supply equipment, in particular to a high-ripple suppression type equipment low-noise linear power supply structure based on a novel frequency amplification element and a method of the high-ripple suppression type equipment low-noise linear power supply structure based on the novel frequency amplification element. The flow guide system comprises a flow guide plate which is arranged on the inner wall of the box body and has an L-shaped cross section, a driver arranged below the flow guide plate, a transmission assembly arranged in the flow guide plate and a sealing insertion plate sliding in the flow guide plate. The lifting plate is driven by the driver to control the flow guide blades and the sealing insertion plate in a linkage mode, and external airflow is automatically guided to the drying filter element for dehumidification treatment in the equipment starting stage. The process that wet air makes contact with the low-temperature component is actively intervened from the airflow inlet end, the condensation forming condition is effectively damaged, and the electrical safety of the medical high-voltage power supply in key scenes such as carrying and restarting is improved.

Description

Low-noise linear power supply structure and method for high-ripple suppression devices based on novel frequency amplification elements Technical Field

[0001] This invention relates to the field of power supply technology, and more specifically, to a low-noise linear power supply structure and method for high ripple suppression devices based on novel frequency amplification elements. Background Technology

[0002] In high-end medical electronic devices, especially precision signal processing systems based on novel frequency amplification elements, the purity of the core power supply unit directly determines the performance limit of the entire system. These devices extract and process weak biological signals using high-gain, wide-bandwidth frequency amplification elements. Any noise and ripple introduced by the power supply will be amplified along with the useful signal, leading to a deterioration in the system's signal-to-noise ratio, image artifacts, or measurement errors. Therefore, providing ultra-low noise, high ripple suppression linear power supplies has become a crucial prerequisite for ensuring the clinical diagnostic capabilities of these devices.

[0003] Patent application CN202411252148.4 discloses a highly hermetically tight SIP frequency converter suitable for microwave communication. It includes a microwave communication device packaged on a device carrier board, comprising at least a frequency conversion receiving channel and a pulse transmitting channel; and a sealed isolation cover assembled on the device carrier board, sealing the microwave communication device thereon, and forming at least a frequency conversion receiving channel cavity and a pulse transmitting channel cavity on the device carrier board through the sealed isolation cover. This enables miniaturization and high-precision packaging of the frequency converter.

[0004] However, existing medical high-voltage power supplies rely mainly on passive protection or static balancing to address the risk of condensation caused by sudden changes in ambient temperature, lacking adaptive control and dehumidification mechanisms for intake airflow. Condensation droplets can easily form conductive paths between high-voltage terminals, causing leakage, while moisture can lead to circuit corrosion and deterioration of insulation materials. More importantly, the electrical instability caused by condensation can be directly coupled to the power output, significantly increasing output noise and ripple, undermining the core capability of low-noise linear power supplies to provide pure and stable energy for precision medical equipment.

[0005] In view of this, we propose a low-noise linear power supply structure and method for high ripple suppression devices based on novel frequency amplification elements. Summary of the Invention

[0006] The purpose of this invention is to provide a low-noise linear power supply structure and method for high ripple suppression equipment based on a novel frequency amplification element. By driving the lifting plate with a driver to control the guide vanes and sealing plate in a linkage manner, the external airflow is automatically directed to the drying filter for dehumidification during the equipment startup phase, thereby solving the problems mentioned in the background art.

[0007] To achieve the above objectives, in one aspect, the present invention provides the following technical solution: a low-noise linear power supply structure for high ripple suppression devices based on novel frequency amplification elements, comprising a power supply box with a built-in flow guiding system, wherein the power supply box includes a drying filter element inserted into the inner wall of the box; the flow guiding system includes a flow guiding plate disposed on the inner wall of the box and having an L-shaped transverse cross-section, a driver disposed below the flow guiding plate, a transmission assembly disposed inside the horizontal section of the flow guiding plate, and a sealing insert plate sliding on one side of the transmission assembly, wherein the sealing insert plate has a protruding rod at its bottom corner; the transmission assembly includes a lifting plate driven by the driver, The system comprises a pair of vertically mounted actuating frames at both ends of the top surface of a lifting plate, several levers mounted on the outer walls of the actuating frames, several guide vanes rotating between the pair of actuating frames, and connecting rods mounted at both ends of the guide vanes. The vertical end plate of the lifting plate has an inclined guide groove, and the connecting rods have grooves that slide and engage with the levers. In this configuration, when the lifting plate moves the pair of actuating frames, the levers rotate the connecting rods 90° via the grooves to adjust the fixed angle of the guide vanes. Simultaneously, the protruding rod moves along the guide groove trajectory, causing the sealing plate to move forward, guiding the airflow into the drying filter element for dehumidification before entering the housing.

[0008] In the technical solution of the present invention, the power supply box further includes a side plate fixedly connected to the inside of the front opening of the box body by bolts, a heat dissipation fan fixedly connected to the side plate by screws, a set of symmetrically distributed positioning frames fixedly connected to the inner wall of the box body by screws, and a slot integrally formed on the box body.

[0009] In the technical solution of the present invention, a number of regularly distributed ventilation holes are provided on the outer wall of the rear section of the box, and the power supply box also includes a top cover and a bottom cover that are fixedly connected to the outer walls of the upper and lower ends of the box by screws.

[0010] In the above setup, the power supply box provides the structural foundation and protection for the entire power supply. Its internal components work together to achieve basic heat dissipation, structural positioning, and preliminary moisture pretreatment, laying the foundation for subsequent precise environmental adaptation and control.

[0011] In the technical solution of the present invention, the horizontal section of the guide plate is provided with a plurality of parallel plate surface slots, the guide plate is integrally formed with inner protruding strips on the left and right sides of the plurality of plate surface slots, and the guide plate is provided with a sliding groove that runs through the front and back on the left side of the plurality of plate surface slots.

[0012] In the technical solution of the present invention, a plurality of limiting protrusions are integrally formed on the outer wall of the inner protrusion strip, an outer protrusion frame that restricts the placement area of ​​the dryer filter element is integrally formed on the vertical section of the guide plate, and a plurality of regularly distributed air guide grilles are integrally formed at the end slot of the vertical section of the guide plate.

[0013] In the above setup, the guide plate forms the core framework of the airflow organization. Its various slots and molding structures precisely define the movement space of the transmission components and the installation position of the dryer filter element, serving as a static carrier for realizing intelligent switching of the air duct.

[0014] In the technical solution of the present invention, the actuator includes a sleeve, a valve core that slides inside the sleeve, a spring disposed below the valve core, a push rod disposed on the top of the valve core and moving therewith, a coil sleeved on the outside of the sleeve, and a bracket sleeved on the end of the sleeve and snapped and fixed to the inner wall of the housing.

[0015] In the technical solution of the present invention, the elastic force provided by the spring pushes the valve core to move upward, and the push rod is snapped and fixed to the top of the valve core and its top end extends above the sleeve.

[0016] In the above setup, the driver serves as the power source and control core of the entire flow guiding system. Its electromagnetic drive and spring reset design ensures the reliability and reversibility of the mechanism's operation, providing power support for activating the anti-condensation mode on demand.

[0017] In the technical solution of the present invention, the lifting plate is snapped and fixed to the top of the top rod, and a fixing rod is heat-fused to the top surface of both the left and right ends of the lifting plate. The actuating frame is snapped and fixed to the end of the fixing rod and slidably connected to the outside of the limiting protrusion. The lever is heat-fused to the actuating frame.

[0018] In the technical solution of the present invention, the guide vane is rotatably connected to the inside of the slot on the plate surface. In its natural state, the guide vane is horizontally placed inside the slot on the plate surface, and the connecting rod is snapped and fixed to the end round rod of the guide vane.

[0019] In the above configuration, the transmission component and the sealing plate are ingeniously linked to synchronously convert the linear motion of the driver into the angle adjustment of the guide vanes and the opening and closing of the air duct, thus realizing reliable switching between the two modes of dehumidification and normal heat dissipation with a single power source.

[0020] On the other hand, the present invention also provides a method for using a low-noise linear power supply structure for high-ripple suppression devices based on a novel frequency amplification element. Using the aforementioned low-noise linear power supply structure for high-ripple suppression devices based on a novel frequency amplification element includes the following steps: S1. First, environmental risk assessment and system activation are performed: When the power supply box is transferred from a low-temperature environment to a warm environment and started, the temperature and humidity sensor built into the power supply box detects that the ambient dew point temperature is close to the temperature of the cold components inside the device, and the control system sends a start signal to the coil of the driver; S2. Subsequently, the coil is energized to generate an electromagnetic field, driving the valve core to move downwards against the spring force; the valve core, through the push rod, causes the lifting plate to make a precise vertical displacement; S3. Next, the lifting plate, through the fixed rod, drives the two side actuating frames to move downwards along the path defined by the limiting protrusions; the lever fixed on the actuating frame is embedded in the slot of each connecting rod, and through the interaction between the inclined surface and the slot wall, the linear displacement is converted into rotational torque, driving all guide vanes to rotate synchronously by 90°, switching from the horizontal storage position to the vertical guide position; at the same time, the protrusion fixed to the bottom of the sealing insert plate is embedded in the guide groove of the lifting plate; the guide... The specific trajectory design of the groove ensures that during the descent of the lifting plate, the convex rod is pushed laterally, causing the sealing plate to slide forward along the groove, completing the air duct switching; S4, after the sealing plate moves forward to the working position, the original direct ventilation duct closes and the dehumidification duct opens, forcing the airflow path to change direction and requiring it to flow through the drying filter; after the cooling fan starts, external air is drawn in through the vents of the housing under negative pressure and passes through the guide plate, penetrating the drying filter; at this time, water molecules in the air are captured by the adsorption material inside the filter, reducing the absolute humidity and dew point temperature; S5, the dehumidified and dried cold air... Air is evenly guided into the high-voltage circuit area inside the power supply box through the air guide grille; since the dew point temperature of this air is lower than the surface temperature of the internal cold components, the thermodynamic conditions for condensation formation are destroyed, thus effectively preventing high-voltage creepage and short-circuit risks during the critical power-on stage; S6, when the system determines that the internal temperature is uniform and the condensation risk is eliminated, the driver is de-energized; the spring releases its stored energy, pushing the valve core and all linkage mechanisms to move in the opposite direction, the guide vanes rotate back to horizontal retraction, the sealing plate retracts and resets, the air duct returns to low-resistance straight-through mode, and the system enters normal heat dissipation operation.

[0021] Compared with existing technologies, the beneficial effects of this invention are: 1. This high-ripple suppression, low-noise linear power supply structure and method for high-frequency amplification components, through a driver-driven lifting plate linkage control of the guide vanes and sealing inserts, automatically directs external airflow to the drying filter for dehumidification during the equipment startup phase. By actively intervening in the process of humid air contacting low-temperature components from the airflow inlet, it effectively disrupts the conditions for condensation formation, improving the electrical safety of medical high-voltage power supplies in critical scenarios such as handling and restarting.

[0022] 2. This low-noise linear power supply structure and method for high ripple suppression equipment based on novel frequency amplification elements achieves multi-functional collaborative control under a single power source through precise mechanical linkage and trajectory design. The cooperation between the guide groove and the protruding rod ensures that the movement of the sealing plate and the rotation of the guide vanes are strictly synchronized, ensuring seamless and reliable sealing during the air duct switching process. This integrated design not only reduces the number of actuators and lowers system complexity, but also has a self-resetting capability, facilitating integration into existing medical power supply systems. Attached Figure Description

[0023] Figure 1 is one of the overall structural schematic diagrams of the present invention; Figure 2 is another overall structural schematic diagram of the present invention; Figure 3 is a disassembled overall structural schematic diagram of the present invention; Figure 4 is a partial structural schematic diagram of the present invention; Figure 5 is a partial cross-sectional schematic diagram of the power supply box in the present invention; Figure 6 is an enlarged schematic diagram of part A in Figure 5 of the present invention; Figure 7 is a structural schematic diagram of the flow guiding system in the present invention; Figure 8 is a structural schematic diagram of the flow guiding plate in the present invention; Figure 9 is an enlarged schematic diagram of part B in Figure 8 of the present invention; Figure 10 is a cross-sectional schematic diagram of the driver in the present invention; Figure 11 is a structural schematic diagram of the transmission assembly in the present invention; Figure 12 is one of the partial structural schematic diagrams of the transmission assembly in the present invention; Figure 13 is another partial structural schematic diagram of the transmission assembly in the present invention; Figure 14 is a structural schematic diagram of the sealing insert plate in the present invention; Figure 15 is a bottom view assembly schematic diagram of a portion of the flow guiding system in the present invention. Figure; Figure reference numerals: 100, Power supply box; 110, Box body; 111, Vent hole; 120, Side panel; 130, Cooling fan; 140, Positioning frame; 150, Slot; 160, Dryer filter; 170, Top cover; 180, Bottom cover; 200, Airflow guiding system; 210, Airflow guide plate; 211, Plate surface slot; 212, Slide groove; 213, Inner protrusion; 214, Limiting protrusion; 215, Outer protrusion frame; 21 6. Air guide grille; 220. Actuator; 221. Sleeve; 222. Valve core; 223. Spring; 224. Push rod; 225. Coil; 226. Bracket; 230. Transmission assembly; 231. Lifting plate; 2310. Guide groove; 232. Fixing rod; 233. Actuating frame; 234. Actuating lever; 235. Guide vane; 236. Connecting rod; 2360. Actuating groove; 240. Sealing insert plate; 241. Protruding rod. Detailed Implementation

[0024] The technical solutions of this invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0025] Please refer to Figures 1-6. This embodiment provides a technical solution: a low-noise linear power supply structure for high ripple suppression devices based on novel frequency amplification elements, including a power supply box 100 with a built-in current guiding system 200.

[0026] Specifically, the power supply box 100 includes a side plate 120 fixed to the inside of the front opening of the box body 110 by bolts, a cooling fan 130 fixed to the side plate 120 by screws, a set of symmetrically distributed positioning frames 140 fixed to the inner wall of the box body 110 by screws, a slot 150 integrally formed on the box body 110, and a drying filter element 160 inserted into the inner wall of the box body 110.

[0027] Furthermore, the rear outer wall of the enclosure 110 is provided with a number of regularly distributed ventilation holes 111, and the power supply box 100 also includes a top cover 170 and a bottom cover 180 that are fixedly connected to the upper and lower outer walls of the enclosure 110 by screws.

[0028] Furthermore, after the cooling fan 130 on the side panel 120 is turned on, external air flows into the housing 110 through the vent 111 under negative pressure, and cools and dissipates heat in the high-voltage circuit area inside the housing 110. The positioning frame 140 is used to cooperate with the structure in the airflow system 200 to form a drying air duct. The slot 150 is used to provide a placement space for the structure in the airflow system 200. The drying filter element 160 is used to filter moisture in the air.

[0029] Furthermore, after the power supply box 100 is assembled, the bottom cover 180 houses a low-noise linear power supply structure, which is the core power supply unit specifically designed for high-ripple suppression devices based on novel frequency amplification components in medical electronic systems. The power supply has a built-in frequency-sensitive detection network system that can identify specific noise components within the device's operating frequency band. Through a tunable active filter network, it provides additional deep suppression of ripple at these critical frequency points, ensuring that the power supply maintains ultra-low noise characteristics in the most sensitive frequency bands of the device.

[0030] In the above setup, the power supply box 100 provides the structural foundation and protection for the entire power supply. Its internal components work together to achieve basic heat dissipation, structural positioning, and preliminary moisture pretreatment, laying the foundation for subsequent precise environmental adaptation and control.

[0031] Please refer to Figures 7-9. In this embodiment, the flow guiding system 200 includes a flow guiding plate 210 disposed on the inner wall of the housing 110 and having an L-shaped transverse cross section, a driver 220 disposed below the flow guiding plate 210, a transmission assembly 230 disposed inside the horizontal section of the flow guiding plate 210, and a sealing insert plate 240 sliding on one side of the transmission assembly 230.

[0032] Specifically, the horizontal section of the guide plate 210 has several parallel grooves 211, and the guide plate 210 has an integrally formed inner protrusion strip 213 on the left and right sides of the grooves 211. The guide plate 210 has a through groove 212 on the left side of the grooves 211.

[0033] Furthermore, a number of limiting protrusions 214 are integrally formed on the outer wall of the inner protrusion strip 213, an outer protrusion frame 215 is integrally formed on the vertical section of the guide plate 210 to limit the placement area of ​​the dryer filter element 160, and a number of regularly distributed air guide grilles 216 are integrally formed at the end slot of the vertical section of the guide plate 210.

[0034] Furthermore, the slots 211 and grooves 212 on the guide plate 210 provide placement space for the structures in the transmission assembly 230, the limiting protrusions 214 on the inner protrusion 213 are used to limit the movement range of the structures in the transmission assembly 230, and the air guide grille 216 is used to guide the dried airflow into the interior of the housing 110.

[0035] In the above configuration, the guide plate 210 constitutes the core framework of the airflow organization. The various slots and molding structures on it precisely define the movement space of the transmission component 230 and the installation position of the drying filter element 160, serving as a static carrier for realizing intelligent switching of the air duct.

[0036] Please refer to Figure 10. In this embodiment, the driver 220 includes a sleeve 221, a valve core 222 that slides inside the sleeve 221, a spring 223 disposed below the valve core 222, a push rod 224 disposed on the top of the valve core 222 and moving therewith, a coil 225 sleeved on the outside of the sleeve 221, and a bracket 226 sleeved on the end of the sleeve 221 and snapped and fixed to the inner wall of the housing 110.

[0037] Specifically, the elastic force provided by the spring 223 pushes the valve core 222 to move upward, and the push rod 224 is snapped and fixed to the top of the valve core 222, with its top end extending above the sleeve 221.

[0038] Furthermore, after the coil 225 is energized to generate an electromagnetic field, it drives the valve core 222 to move downward against the elastic force of the spring 223, thereby driving the push rod 224 to move synchronously.

[0039] In the above configuration, the driver 220 serves as the power source and control core of the entire flow guiding system. Its electromagnetic drive and spring 223 reset design ensure the reliability and reversibility of the mechanism's operation, providing power guarantee for the on-demand activation of the anti-condensation mode.

[0040] Please refer to Figures 11-15. In this embodiment, the transmission assembly 230 includes a lifting plate 231 driven by a driver 220, a pair of actuating frames 233 vertically fixed to both ends of the top surface of the lifting plate 231, several levers 234 disposed on the outer wall of the actuating frames 233, several guide vanes 235 rotating between the pair of actuating frames 233, and connecting rods 236 disposed at the left and right ends of the guide vanes 235. An inclined guide groove 2310 is provided on the vertical plate at the end of the lifting plate 231, and the front end of the guide groove 2310 is inclined upward. A groove 2360 is provided on the connecting rod 236 to slide and engage with the levers 234. A protruding rod 241 is provided at the bottom corner of the sealing insert plate 240.

[0041] When the lifting plate 231 moves a pair of toggle frames 233, the lever 234 drives the connecting rod 236 to rotate 90° through the toggle groove 2360 to adjust the fixed angle of the guide vane 235; at the same time, the protruding rod 241 moves along the trajectory of the guide groove 2310, driving the sealing insert plate 240 to move forward, guiding the airflow into the drying filter element 160 for dehumidification, and then into the interior of the box 110.

[0042] Specifically, the lifting plate 231 is snapped and fixed to the top of the top rod 224. The top surfaces of both ends of the lifting plate 231 are heat-fused to a fixing rod 232. The toggle frame 233 is snapped and fixed to the end of the fixing rod 232 and slidably connected to the outside of the limiting protrusion 214. The lever 234 is heat-fused to the toggle frame 233.

[0043] Furthermore, the guide vane 235 is rotatably connected to the inside of the slot 211 on the plate surface. In its natural state, the guide vane 235 is horizontally placed inside the slot 211 on the plate surface, and the connecting rod 236 is snapped and fixed to the end round rod of the guide vane 235.

[0044] Furthermore, after the lifting plate 231 moves down, the fixed rod 232 drives the two side actuation frames 233 to move down along the path defined by the limiting protrusion 214; the actuation rod 234 fixed on the actuation frame 233 is embedded in the actuation groove 2360 of each connecting rod 236, and through the interaction between the inclined surface and the groove wall, the linear displacement is converted into rotational torque, driving all guide vanes 235 to rotate synchronously by 90°, switching from the horizontal storage position to the vertical guide position.

[0045] Furthermore, the protruding rod 241 fixed to the bottom of the sealing insert plate 240 is embedded in the guide groove 2310 of the lifting plate 231; the specific trajectory design of the guide groove 2310 makes the protruding rod 241 pushed laterally during the descent of the lifting plate 231, causing the sealing insert plate 240 to slide forward along the slide groove 212 to complete the air duct switching.

[0046] In the above configuration, the transmission component 230 and the sealing plate 240 are ingeniously linked to synchronously convert the linear motion of the driver 220 into the angle adjustment of the guide vane 235 and the opening and closing of the air duct, thus realizing reliable switching between the two modes of dehumidification and normal heat dissipation with a single power source.

[0047] The method of using the high ripple suppression low-noise linear power supply structure for high-ripple suppression devices based on novel frequency amplification elements of the present invention includes the following steps: S1. First, environmental risk assessment and system activation are performed: When the power supply box 100 is transferred from a low-temperature environment to a warm environment and started, when the temperature and humidity sensor built into the power supply box 100 detects that the ambient dew point temperature is close to the temperature of the cold components inside the device, the control system sends a start signal to the coil 225 of the driver 220; S2. Subsequently, the coil 225 is energized to generate an electromagnetic field, driving the valve core 222 to overcome the spring 223. The elastic force moves downward; the valve core 222, through the push rod 224, causes the lifting plate 231 to produce a precise vertical displacement; S3, then, the lifting plate 231, through the fixed rod 232, drives the two side actuating frames 233 to move downward along the path defined by the limiting protrusion 214; the lever 234 fixed on the actuating frame 233 is embedded in the actuating groove 2360 of each connecting rod 236, and through the interaction between the inclined surface and the groove wall, the linear displacement is converted into rotational torque, driving all guide vanes 235 to rotate synchronously by 90°, switching from the horizontal storage position to the vertical guide position; at the same time, the protruding rod 241 fixed at the bottom of the sealing insert plate 240 is embedded in the guide groove 2310 of the lifting plate 231; The specific trajectory design of the guide groove 2310 ensures that during the descent of the lifting plate 231, the protruding rod 241 is pushed laterally, causing the sealing insert plate 240 to slide forward along the slide groove 212, completing the air duct switching; S4, after the sealing insert plate 240 moves forward to the working position, the original direct ventilation duct closes and the dehumidification duct opens, forcing the airflow path to change direction and requiring it to flow through the drying filter element 160; after the cooling fan 130 starts, external air is drawn in through the vent 111 of the housing 110 under negative pressure and passes through the guide plate 210, penetrating the drying filter element 160; at this time, water molecules in the air are captured by the adsorption material inside the filter element, reducing the absolute humidity of the air and lowering the dew point temperature; S5 The dehumidified, dry, and cold air is evenly introduced into the high-voltage circuit area inside the power supply box 100 through the air guide grille 216. Since the dew point temperature of this air is lower than the surface temperature of the internal cold components, the thermodynamic conditions for condensation formation are destroyed, thereby effectively preventing high-voltage creepage and short-circuit risks during the critical stage of power-on. S6. When the system determines that the internal temperature is uniform and the condensation risk is eliminated, the driver 220 is de-energized. The spring 223 releases its stored energy, pushing the valve core 222 and all linkage mechanisms to move in the opposite direction. The guide vane 235 rotates back to its horizontal position, the sealing plate 240 retracts and resets, the air duct returns to the low-resistance straight-through mode, and the system enters the normal heat dissipation operation state.

[0048] The foregoing description of specific exemplary embodiments of the invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the invention, as well as various different choices and variations. The scope of the invention is intended to be defined by the specification and its equivalents.

Claims

1. A low-noise linear power supply structure for high-ripple suppression devices based on novel frequency amplification elements, characterized in that: The device includes a power supply box with a built-in airflow guiding system. The power supply box includes a drying filter element inserted into the inner wall of the box. The airflow guiding system includes an L-shaped airflow guide plate disposed on the inner wall of the box, a driver disposed below the airflow guide plate, a transmission assembly disposed inside the horizontal section of the airflow guide plate, and a sealing insert plate sliding on one side of the transmission assembly. The sealing insert plate has a protruding rod at its bottom corner. The transmission assembly includes a lifting plate driven by the driver, a pair of vertically fixed to both ends of the top surface of the lifting plate, several levers disposed on the outer wall of the levers, several guide vanes rotating between the pair of levers, and connecting rods disposed at the left and right ends of the guide vanes. The vertical plate at the end of the lifting plate has an inclined guide groove, and the connecting rod has a slot that slides and engages with the lever. When the lifting plate moves the pair of levers, the lever drives the connecting rod to rotate 90° through the slot to adjust the fixed angle of the guide vanes. At the same time, the protruding rod moves along the trajectory of the guide groove, causing the sealing insert plate to move forward, guiding the airflow into the drying filter element for dehumidification, and then into the box.

2. The low-noise linear power supply structure for high-ripple suppression devices based on novel frequency amplification elements according to claim 1, characterized in that: The power supply box also includes a side plate that is bolted to the inside of the front opening of the box, a cooling fan that is screwed to the side plate, a set of symmetrically distributed positioning frames that are screwed to the inner wall of the box, and a slot integrally formed on the box.

3. The low-noise linear power supply structure for high ripple suppression devices based on novel frequency amplification elements according to claim 2, characterized in that: The rear outer wall of the enclosure has several regularly distributed ventilation holes. The power supply box also includes a top cover and a bottom cover that are fixedly connected to the upper and lower outer walls of the enclosure by screws.

4. The low-noise linear power supply structure for high ripple suppression devices based on novel frequency amplification elements according to claim 3, characterized in that: The horizontal section of the guide plate has several parallel grooves. The guide plate has an integrally formed inner protrusion strip on the left and right sides of the grooves. The guide plate has a through groove on the left side of the grooves.

5. The low-noise linear power supply structure for high ripple suppression devices based on novel frequency amplification elements according to claim 4, characterized in that: The outer wall of the inner convex strip is integrally formed with several limiting protrusions, the vertical section of the guide plate is integrally formed with an outer convex frame that limits the placement area of ​​the dryer filter element, and the end slot of the vertical section of the guide plate is integrally formed with several regularly distributed air guide grilles.

6. The low-noise linear power supply structure for high-ripple suppression devices based on novel frequency amplification elements according to claim 5, characterized in that: The actuator includes a sleeve, a valve core that slides within the sleeve, a spring located below the valve core, a push rod located on top of the valve core and moving with it, a coil sleeved on the outside of the sleeve, and a bracket sleeved on the end of the sleeve and fixedly engaged with the inner wall of the housing.

7. The low-noise linear power supply structure for high ripple suppression devices based on novel frequency amplification elements according to claim 6, characterized in that: The spring provides elastic force to push the valve core upward, and the push rod is snapped and fixed to the top of the valve core with its top end extending above the sleeve.

8. The low-noise linear power supply structure for high ripple suppression devices based on novel frequency amplification elements according to claim 7, characterized in that: The lifting plate is snapped and fixed to the top of the top rod. Fixed rods are heat-fused to the top surfaces of both ends of the lifting plate. The actuating frame is snapped and fixed to the end of the fixed rod and slidably connected to the outside of the limiting protrusion. The lever is heat-fused to the actuating frame.

9. The low-noise linear power supply structure for high ripple suppression devices based on novel frequency amplification elements according to claim 8, characterized in that: The guide vane is rotatably connected to the inside of the slot on the plate. In its natural state, the guide vane is placed horizontally inside the slot on the plate, and the connecting rod is snapped and fixed to the end round rod of the guide vane.

10. A method of using a low-noise linear power supply structure for high-ripple suppression devices based on a novel frequency amplification element, comprising the low-noise linear power supply structure for high-ripple suppression devices based on a novel frequency amplification element as described in claim 9, characterized in that... Includes the following steps: S1. First, environmental risk assessment and system activation are performed: When the power supply box is transferred from a low-temperature environment to a warm environment and started, the built-in temperature and humidity sensor detects that the ambient dew point temperature is close to the temperature of the cold components inside the equipment, and the control system sends a start signal to the coil of the driver; S2. Subsequently, the coil is energized to generate an electromagnetic field, driving the valve core to move downward against the spring force; the valve core, through the push rod, causes the lifting plate to make a precise vertical displacement; S3. Next, the lifting plate, through the fixed rod, drives the two side actuating frames to move downward along the path defined by the limiting protrusions; the levers fixed on the actuating frames are embedded in the lever grooves of each connecting rod, and through the interaction between the inclined surface and the groove wall, the linear displacement is converted into rotational torque, driving all guide vanes to rotate synchronously by 90°, switching from the horizontal storage position to the vertical guide position; at the same time, the protrusion fixed to the bottom of the sealing insert plate is embedded in the guide groove of the lifting plate; the specific trajectory design of the guide groove makes the protrusion pushed laterally during the descent of the lifting plate, driving the sealing insert plate to slide forward along the slide groove, completing the process. S4. After the sealing plate moves forward to the working position, the original direct ventilation duct closes and the dehumidification duct opens, forcing the airflow path to change direction and requiring it to flow through the drying filter. After the cooling fan starts, external air is drawn in through the vents of the housing under negative pressure and passes through the guide plate, penetrating the drying filter. At this time, water molecules in the air are captured by the adsorption material in the filter, reducing the absolute humidity and dew point temperature. S5. The dehumidified dry cold air is evenly introduced into the high-voltage circuit area inside the power supply box through the air guide grille. Since the dew point temperature of this air is lower than the surface temperature of the internal cold components, the thermodynamic conditions for condensation formation are destroyed, thus effectively preventing high-voltage creepage and short-circuit risks during the critical power-on stage. S6. When the system determines that the internal temperature is uniform and the condensation risk is eliminated, the driver is de-energized. The spring releases its stored energy, pushing the valve core and all linkage mechanisms to move in the opposite direction. The guide vanes rotate back to their horizontal position, the sealing plate retracts and resets, the air duct returns to the low-resistance direct-flow mode, and the system enters the normal heat dissipation operation state.

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