A high voltage power supply capable of reducing noise

Abstract

This invention provides a high-voltage power supply capable of reducing noise, relating to the field of high-voltage power supply technology. It includes a housing, which is a cylindrical structure open at both ends, with a front end plate and a rear end plate at each end; a mounting plate, providing a mounting base for a circuit board, connected to the front end plate and inserted into the housing along its axial direction, with a vibration filtering component between the mounting plate and the front end plate; and a shock-absorbing component, disposed on the inner wall of the housing and comprising two sets that cooperate with both sides of the mounting plate, including two shock-absorbing strips spaced apart on the upper and lower sides of the mounting plate, each strip having an inner cavity. The two shock-absorbing strips are configured to expand when the rear end plate and front end plate are assembled with the housing, contacting the mounting plate to form a shock-absorbing structure. This application achieves multiple vibration suppression through the synergistic effect of the vibration filtering component and the expandable shock-absorbing component, reducing the mechanical noise of the high-voltage power supply during operation from the source, thus achieving a noise reduction effect.

Description

Technical Field

[0001] This invention relates to the field of high-voltage power supply technology, and in particular to a high-voltage power supply capable of reducing noise. Background Technology

[0002] High-voltage power supplies are widely used in various fields such as industrial production, medical equipment, and scientific research experiments. During operation, the electrical components on the internal circuit board vibrate, and this vibration is transmitted to the outer casing through the connection structure. At the same time, the outer casing itself is prone to resonance at the operating frequency, thus generating significant mechanical noise.

[0003] In existing technologies, most methods for reducing high-voltage power supply noise involve passive vibration damping, such as attaching vibration damping pads to the inner wall of the casing, placing simple rubber pads between the circuit board and the casing, or installing a vibration-filtering casing. These methods can only passively absorb some vibration energy and cannot suppress vibration transmission and casing resonance at the source, thus having limited noise reduction effects.

[0004] Meanwhile, most existing vibration damping components are fixed structures, making installation inconvenient. In addition, the heat dissipation structure and vibration damping structure of existing high-voltage power supplies are independent of each other, with low integration, and the airflow for heat dissipation is prone to generating secondary noise.

[0005] Furthermore, the air intake structure design of existing high-voltage power supplies is unreasonable, which easily leads to concentrated airflow and generates additional noise. Therefore, there is an urgent need for a high-voltage power supply that can actively suppress vibration, is easy to install, provides reliable shock absorption, and also takes into account heat dissipation and noise reduction. Summary of the Invention

[0006] The purpose of this invention is to solve the above-mentioned problems by providing a high-voltage power supply that can reduce noise.

[0007] To achieve the above objectives, the technical solution of the present invention is: a high-voltage power supply capable of reducing noise, comprising: The outer shell is a cylindrical structure open at both ends, with a front end plate and a rear end plate at each end; The mounting plate provides a mounting base for the circuit board, is connected to the front-end plate and is inserted into the housing along the axial direction of the housing, and a vibration filtering component is provided between it and the front-end plate. The shock-absorbing assembly is disposed on the inner side wall of the housing and includes two sets that cooperate with both sides of the mounting plate. It includes two shock-absorbing strips spaced apart on the upper and lower sides of the mounting plate. The shock-absorbing strips have an inner cavity. The two shock-absorbing strips are configured to expand when the rear end plate and the front end plate are assembled and connected with the housing, and to contact the mounting plate to form a shock-absorbing structure.

[0008] Furthermore, the two shock absorbers are configured such that when the rear end plate and / or the front end plate are separated from the housing and the two shock absorbers are in a free state, the distance between the sides of the two shock absorbers that are close to each other is not less than the thickness of the mounting plate.

[0009] Furthermore, along its own length, the damping strip has an inner cavity, and the damping assembly further includes: Rigid cylinder, connected to the outer shell; The bladder is housed inside a rigid cylinder and communicates with the inner cavities of the two damping strips. Both the bladder and the inner cavities are filled with a flowing medium. An extrusion component that engages with a rigid cylinder guide and whose end abuts against the bladder body.

[0010] Furthermore, filter components are provided on both opposite side walls of the outer casing. Each filter component includes a body, and a mounting groove is provided on the side of the body near the inner side of the outer casing. The two shock-absorbing strips are respectively provided on the two sides of the mounting groove.

[0011] Furthermore, on both sides of the mounting groove, the main body is provided with a first air passage and a second air passage, and the external airflow can flow into the outer shell along the extension direction of the first air passage and the second air passage. The two shock-absorbing strips are thermally coupled to the two side walls of the mounting groove.

[0012] Furthermore, the rear end face of the main body near the rear end plate is spaced apart from the rear end plate, and the rigid cylinder is disposed on the rear end face of the main body. The rear end face is also provided with an air outlet 1 that communicates with the first air passage. The trajectory of the airflow in the first air passage flowing out through the air outlet 1 at least partially overlaps with the rigid cylinder.

[0013] Furthermore, an air outlet is provided at one end of the second air duct near the front end plate; On the side opposite to the mounting groove, the main body is provided with a filter groove, and a filter element is installed in the filter groove; Along the axial direction of the outer shell, the bottom of the filter tank is provided with a plurality of vent holes 1 that communicate with the second air passage, and the side wall of the main body is provided with a group of air inlets 1 that correspond to the vent holes 1.

[0014] Furthermore, two slots are provided on each of the two side walls of the outer shell, and side plates that are inserted into the slots are provided on the upper and lower sides of the main body.

[0015] Furthermore, each of the four edges of the outer shell is provided with a through hole along its axis, and countersunk holes are provided at both ends of the through hole. One of the front and rear plates is provided with a threaded cylinder that is inserted and positioned in conjunction with a countersunk hole, and the other is provided with an insert cylinder that is inserted and positioned in conjunction with a countersunk hole. It also includes a screw rod that passes through the insertion cylinder and the insertion hole in sequence and is then threadedly connected to the threaded cylinder.

[0016] Furthermore, the mounting plate is fixedly connected to a connecting plate, and four sets of vibration filtering assemblies are respectively arranged between the four corners of the connecting plate and the four corners of the front end plate. The vibration filtering assemblies include: A rubber pin is mounted on the front end plate and has an elastic surface opposite to the front end plate. Screw one is fixedly connected to the front end plate; The connecting plate is provided with a positioning hole for insertion and positioning with a rubber pin and a clearance hole for the screw to pass through; the end of the screw passing through the clearance hole is threaded with a nut, and a compression spring is provided between the nut and the connecting plate.

[0017] The high-voltage power supply disclosed in this invention, which can reduce noise, has the following advantages compared with the prior art: Through the synergistic effect of the vibration filtering components and the expandable shock absorption components, multiple vibration suppressions are achieved, while the shell resonance is suppressed and airflow noise is avoided. This reduces the mechanical noise and airflow noise of the high-voltage power supply at the source, solving the problem of limited noise reduction effect in existing technologies.

[0018] 2. The air duct structure is used to specifically cool the damping strips and the bladder, avoiding the failure of the damping components due to high temperature and ensuring the long-term stable operation of the damping assembly; the cooperation between the expandable damping strips, the extrusion parts, and the bladder enables active control of the clamping force, ensuring reliable clamping and no reduction in damping effect; the dual buffer design of the vibration filtering assembly further enhances the vibration suppression effect and ensures the stability of the equipment operation.

[0019] 3. The free-state time-distance design of the shock-absorbing strips facilitates the installation of the connecting plate. The plug-in structure of the filter components and the housing, as well as the precise positioning and connection structure of the front and rear end plates, all enable quick disassembly and installation, facilitating filter replacement, shock-absorbing component maintenance, and internal electrical component repair, thereby improving maintenance efficiency.

[0020] 4. The shock absorption components, filter components, and heat dissipation structure are integrated into the design, taking into account noise reduction, heat dissipation, and filtration functions, and avoiding mutual interference between the various structures; the overall structural design is reasonable, the manufacturing cost is moderate, it is suitable for various high-voltage power supply application scenarios, and it is highly practical. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a high-voltage power supply capable of reducing noise according to the present invention. Figure 1 .

[0022] Figure 2 This is a schematic diagram of the overall structure of a high-voltage power supply capable of reducing noise according to the present invention. Figure 2 .

[0023] Figure 3 This is a top view schematic diagram of a high-voltage power supply capable of reducing noise according to the present invention.

[0024] Figure 4 This is a schematic diagram of the structure of a high-voltage power supply hidden back-end board that can reduce noise according to the present invention.

[0025] Figure 5 for Figure 4 The diagram shows a partially enlarged structural schematic at point A in this invention.

[0026] Figure 6 This is a schematic diagram of the structure of a high-voltage power supply with a hidden back-end plate and housing that can reduce noise, according to the present invention.

[0027] Figure 7 This is an exploded structural diagram of the front-end board and connecting plate in a high-voltage power supply capable of reducing noise according to the present invention.

[0028] Figure 8 for Figure 7 The diagram shows a partially enlarged structural schematic at point B in this invention.

[0029] Figure 9 This is a schematic diagram of the assembly structure of the front-end board, the back-end board, and a filter component in this invention.

[0030] Figure 10 This is a schematic diagram of the outer shell structure in this invention. Figure 1 .

[0031] Figure 11 This is a schematic diagram of the outer shell structure in this invention. Figure 2 .

[0032] Figure 12 This is a cross-sectional view of the outer shell in this invention.

[0033] Figure 13 This is a partial structural diagram of the filter assembly and the housing in this invention.

[0034] Figure 14 This is a cross-sectional view of the filter assembly and housing when they are installed together in this invention.

[0035] Figure 15 for Figure 14 A magnified schematic diagram of the local structure at point C is shown.

[0036] Figure 16 This is a schematic diagram of the structure of the filter component in this invention.

[0037] Figure 17 This is a schematic diagram showing the disassembled structure of the filter frame and filter elements in the filter assembly of the present invention.

[0038] Figure 18 This is a cross-sectional schematic diagram of the filtering component in this invention.

[0039] Figure 19This is a schematic diagram of the mating structure of the mounting plate and the connecting plate.

[0040] In the diagram: 1. Outer shell; 10. Front end plate; 100. Air inlet group one; 101. Air inlet group two; 102. Insertion hole; 1020. Countersunk hole; 104. Threaded cylinder; 105. Mounting cylinder; 106. Rubber pin post; 1060. Elastic surface; 107. Screw one; 108. Compression spring; 109. Nut; 11. Rear end plate; 110. Insertion cylinder; 12. Fan; 13. Screw two; 14. Slot; 140. Limiting end face; 2. Mounting plate; 21. Connecting plate; 210. Positioning hole; 211. Clearance hole; 3. Filter assembly; 30. Mounting slot; 31. First air passage; 310. Air outlet one; 311. Ventilation hole group one; 32. Filter groove; 33. Second air passage; 330. Ventilation hole group two; 35. Filter element; 331. Air outlet two; 34. Side plate; 4. Shock absorption assembly; 40. Shock absorption strip; 400. Inner cavity; 401. Pressing protrusion; 41. Rigid cylinder; 42. Extrusion element; 43. Bag body; 7. Circuit board; 9. Airflow. Detailed Implementation

[0041] The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the invention in a schematic manner, and therefore only show the components relevant to the invention. Example 1

[0042] The existing high-voltage power supply casing 1 is mostly a split structure with insufficient structural strength. When it is working, the high-frequency vibration generated by the components on the circuit board 7 is easily transmitted to the casing 1 and resonance is likely to occur. In addition, the circuit board 7 is directly and rigidly connected to the front end board 10, and the vibration generated by the electrical components will be directly transmitted to the casing 1, resulting in a large amount of noise.

[0043] refer to Figures 1 to 6 , Figure 9 , Figure 12 This application provides a high-voltage power supply capable of reducing noise, including a housing 1, a mounting plate 2, and a shock-absorbing assembly 4, with the specific structure as follows: Outer shell 1: It adopts a cylindrical structure with open ends and is made of high-strength metals such as aluminum alloy and stainless steel. The cylindrical structure can effectively disperse vibration stress and improve the overall structural rigidity. The front end plate 10 and the rear end plate 11 are detachably connected to the two ends of the outer shell 1, respectively. The connection method can be threaded connection, snap connection, etc., which is convenient for disassembly and maintenance. After connection, the front end plate 11 and the outer shell 1 form a high-strength organic whole, which can effectively suppress the generation of resonance and effectively suppress the transmission of internal noise to the outside.

[0044] Mounting plate 2: As the mounting base for circuit board 7, it is made of rigid plate. Mounting plate 2 is connected to front end plate 10 and forms a plug-in fit with the inside of housing 1 along the axial direction of housing 1 to ensure that mounting plate 2 is installed firmly. A vibration filtering component is provided between mounting plate 2 and front end plate 10. The vibration filtering component is used to isolate the vibration generated by electrical components on circuit board 7 and reduce the vibration directly transmitted to front end plate 10 and housing 1.

[0045] Vibration damping component 4: It is set on the inner side wall of the outer shell 1, and there are two sets in total. They cooperate with the two sides of the mounting plate 2 respectively. Each set of vibration damping component 4 includes two damping strips 40 that are spaced apart on the upper and lower sides of the mounting plate 2. The damping strips 40 are made of elastic material (such as rubber) and have an inner cavity 400. The two damping strips 40 are configured to expand when the rear end plate 11 and the front end plate 10 are assembled and connected with the outer shell 1. After expansion, they contact the mounting plate 2 to form a vibration damping structure for the mounting plate 2 and realize vibration suppression.

[0046] In this embodiment, with the above-described configuration, when the front end plate 10 and the rear end plate 11 are mounted onto the outer casing 1, the two damping strips 40 of each damping assembly 4 expand, clamping and positioning the mounting plate 2 to form a damping structure. When the high-voltage power supply is working, the electrical components on the circuit board 7 vibrate, and the vibration is first transmitted to the mounting plate 2. The vibration filtering assembly between the mounting plate 2 and the front end plate 10 performs preliminary filtering of the vibration, absorbing some of the vibration energy and suppressing the transmission of vibration to the front end plate 10. At the same time, after the front end plate 10 and the rear end plate 11 are assembled with the outer casing 1, the two damping strips 40 expand and contact the mounting plate 2 to form an elastic clamp. When the mounting plate 2 vibrates, the damping strips 40 absorb the vibration energy through their own elastic deformation, while suppressing the transmission of vibration to the outer casing 1. In addition, the high-strength structure of the cylindrical outer casing 1 can change its own natural frequency, avoiding resonance at the operating frequency of the high-voltage power supply and reducing noise generation from the source. This application achieves dual suppression of vibration through the synergistic effect of the vibration filtering component and the vibration damping component 4, effectively reducing the transmission of vibration of the circuit board 7 to the housing 1; the structural design of the cylindrical housing 1 suppresses the resonance of the housing 1, further reducing noise; the overall structural design is reasonable and can reduce the mechanical noise of the high voltage power supply at the source. Example 2

[0047] To ensure the vibration damping effect and support effect of the damping strips 40 on the mounting plate 2, it is necessary to ensure effective contact and support between the two damping strips 40 and the mounting plate 2 during high-voltage power supply assembly. This requires a sufficiently small gap between the two damping strips 40. If the gap is too small, it will obstruct the mounting plate 2 during insertion, making installation inconvenient and potentially damaging the damping strips 40 or the mounting plate 2. If the gap is too large, it may affect the clamping effect during operation. Therefore, the gap between the damping strips 40 in their free state needs to be reasonably limited, balancing installation convenience and vibration damping reliability.

[0048] Based on Embodiment 1, the improvement of this embodiment is that the two damping strips 40 are configured such that when the rear end plate 11 and / or the front end plate 10 are separated from the outer shell 1, that is, when either or both of the front and rear end plates 11 are not fixedly connected to the outer shell 1, the two damping strips 40 are in a free, unexpanded state. At this time, the distance between the sides of the two damping strips 40 that are close to each other is not less than the thickness of the mounting plate 2. Preferably, the distance between the two damping strips 40 in the free state is 0.5-2mm larger than the thickness of the mounting plate 2, which can avoid interference during installation and ensure that the mounting plate 2 can be tightly clamped after expansion. With the above configuration, when assembling the high-voltage power supply, the rear end plate 11 and / or the front end plate 10 are separated from the outer shell 1. At this time, the two damping strips 40 are in a free state. Since their spacing is not less than the thickness of the mounting plate 2, the front end plate 10 and the mounting plate 2 are inserted together between the two damping strips 40. Then the rear end plate 11 is installed. After the front end plate 10 and the rear end plate 11 are assembled with the outer shell 1, the damping strips 40 expand and the spacing decreases, thereby tightly clamping the mounting plate 2 and playing a damping role.

[0049] The above-mentioned setup effectively solves the problem of inconvenient installation of mounting plate 2, reduces installation difficulty, and improves installation efficiency. At the same time, it ensures that the shock-absorbing strip 40 can reliably clamp the mounting plate 2 when it is working, ensuring that the shock absorption effect is not diminished, and taking into account both installation convenience and shock absorption reliability.

[0050] refer to Figures 13 to 15 The shock-absorbing strips 40 have evenly spaced pressing protrusions 401 on their facing sides. When the shock-absorbing strips 40 expand, they contact and press against the mounting plate 2 through the pressing protrusions 401. Example 3

[0051] For details, please refer to Figures 14 to 16 The specific structure of the shock-absorbing component 4 is as follows: along the length of the shock-absorbing strip 40, an inner cavity 400 is provided inside the shock-absorbing strip 40; the shock-absorbing component 4 also includes a rigid cylinder 41, a bladder 43, and an extruder 42; wherein, the rigid cylinder 41 is detachably fixed to the inner wall of the outer shell 1. As a specific implementation, it can be directly fixed to the inner wall of the outer shell 1 by screws. The material is selected as rigid metal, rigid plastic, etc., to ensure structural stability; the bladder 43 is disposed inside the rigid cylinder 41. The bladder 43 is integrally disposed with the two shock-absorbing strips 40 and communicates with the inner cavity 400 of the shock-absorbing strips 40. The inner cavity 400 of the bladder 43 and the shock-absorbing strips 40 are both filled with a flowing medium (such as silicone oil, inert gas), preferably silicone oil; the extruder 42 is guided and cooperated with the rigid cylinder 41. The end of the extruder 42 abuts against the bladder 43. The extruder 42 can move along the axial direction of the rigid cylinder 41 to apply extrusion force to the bladder 43.

[0052] When the front end plate 10 and the rear end plate 11 are assembled with the outer shell 1, the rear end plate 11 applies an axial thrust to the extruder 42, and the extruder 42 moves along the rigid cylinder 41, thereby extruding the flowing medium inside the bladder 43. Under pressure, the flowing medium flows into the inner cavity 400 of the two damping strips 40 through the connecting channel, causing the damping strips 40 to expand and clamp the mounting plate 2. When the high voltage power supply is working, the mounting plate 2 vibrates, and the vibration is transmitted to the damping strips 40. After the damping strips 40 are squeezed, reciprocating flow occurs inside, consuming vibration energy. At the same time, the elastic deformation of the damping strips 40 also absorbs some vibration energy, achieving double damping. When it is necessary to remove the mounting plate 2, the front and rear end plates 11 are removed, the pressure of the extruder 42 disappears, the flowing medium inside the bladder 43 flows back, and the damping strips 40 return to a free state, making it easy to remove the mounting plate 2.

[0053] Through the above-mentioned setup, the expansion of the damping strip 40 is actively controlled. By assembling and linking the front and rear end plates 11, the clamping force of the damping strip 40 is automatically adjusted to ensure reliable clamping. The flow of the fluid medium can actively consume vibration energy and improve the damping effect. At the same time, the expansion and contraction of the damping strip 40 can be flexibly switched, taking into account both installation convenience and damping reliability, and further reducing the noise caused by vibration transmission. Example 4

[0054] As a specific implementation method, the existing structure has the shock-absorbing component 4 as an independent component from other parts, which is not conducive to the integration and optimization of the overall structure. In order to improve the integration of the internal space of the high-voltage power supply, this application further optimizes the structure based on the above implementation method. Specifically, filter components 3 are provided on the opposite side walls of the outer shell 1. The filter component 3 includes a body, which is made of a rigid material that is resistant to high temperature and corrosion. Preferably, it is made of metal. A mounting groove 30 is provided on the side of the body near the inner side of the outer shell 1. The size of the mounting groove 30 is adapted to the width of the mounting plate 2. Two shock-absorbing strips 40 are respectively fixedly installed on the two sides of the mounting groove 30 to ensure that the shock-absorbing strips 40 are precisely aligned with the two sides of the mounting plate 2.

[0055] On both sides of the housing, there are air inlets corresponding to the filter assembly 3. A fan 12 is installed on the rear plate 11. When the fan 12 is working, it draws the gas inside the housing outward. The external airflow 9 flows into the housing 1 through the filter assembly 3 to dissipate heat from the internal components. At the same time, the filter assembly 3 has a mounting groove 30 on its body, which provides a stable mounting base for the shock absorber strip 40. The mounting groove 30 can accurately position the shock absorber strip 40, ensuring that the two shock absorber strips 40 correspond to the two sides of the mounting plate 2 and avoiding misalignment. When the mounting plate 2 is inserted, it is inserted along the extension direction of the mounting groove 30. The mounting groove 30 also serves as a guide, making it easy to install the mounting plate 2 accurately. The shock absorber strip 40 is set on both sides of the mounting groove 30, which can achieve uniform clamping from both sides of the mounting plate 2, ensuring uniform distribution of shock absorption force and improving the shock absorption effect. In addition, the filter assembly 3 is set on both sides, which allows the airflow 9 to enter from both sides of the housing 1, improving the uniformity of heat dissipation.

[0056] In a specific implementation, the damping strip 40 can be fixed by adhesive bonding, or an insertable rib can be provided on the side wall of the mounting groove 30. The rib surface has a mating groove that engages with the insertable rib to achieve a detachable connection, facilitating future replacement of the damping strip 40. This configuration not only achieves precise positioning of the damping strip 40, avoiding misalignment, but also integrates the filter assembly 3 and the damping assembly 4, improving the overall structural integration. Example 5

[0057] Understandably, to ensure that the damping strip 40 fully clamps the mounting plate 2, the bladder 43 will be fully compressed during initial installation to allow the damping strip 40 to fully expand. However, due to the large amount of heat generated during high-voltage power supply operation, the internal temperature of the housing rises. Since the damping strip 40 is made of rubber, its internal flow medium will expand under high temperature conditions. This expansion will further increase the damping strip 40's internal flow medium. Within a certain range of expansion, the sidewall of the mounting groove 30 will provide a certain limit to the damping strip 40. The effect is that the clamping force of the damping strip 40 on the mounting plate 2 will increase, further increasing the clamping force. At this time, the deformation of the damping strip 40 will decrease when the mounting plate 2 vibrates, and the vibration filtering effect will be reduced. If the damping strip 40 expands excessively, causing it to deform beyond the limit of the mounting groove 30, the damping strip 40 will lose its constraint and expand further. In this case, due to the loss of constraint, the clamping force applied by the damping strip 40 to the mounting plate 2 will be reduced, affecting the reliability of vibration damping. Moreover, after excessive expansion, the side wall of the damping strip 40 will rub against the edges or other parts of the mounting groove 30, reducing its service life. In order to reduce or even avoid the occurrence of the above situations, based on the above implementation method, refer to Figures 16 to 18Two filter components 3 are symmetrically arranged inside the housing. Inside the filter component 3, on both sides of the mounting groove 30, a first air passage 31 and a second air passage 33 are respectively provided. Both the first air passage 31 and the second air passage 33 extend axially along the outer shell 1. A first group of vent holes 311 connecting to the filter groove 32 is provided on the side wall of the first air passage 31, and a second group of vent holes 330 connecting to the vent groove is provided on the side wall of the second air passage 33. When the fan 12 is working, the external airflow 9 can flow into the interior of the outer shell 1 along the extending direction of the first air passage 31 and the second air passage 33. Specifically, the airflow direction of the airflow 9 inside the first air passage 31 and the second air passage 33 is as follows: Figure 18 As shown, when the airflow 9 flows through, it can exchange heat with the two side walls of the mounting groove 30, keeping it within a small temperature range from room temperature. At the same time, the two damping strips 40 are thermally coupled to the two side walls of the mounting groove 30, which can be achieved by using thermally conductive adhesive, embedded connection, or other methods. The heat generated by the damping strips 40 will be transferred to the side walls of the mounting groove 30 and then carried away by the airflow 9, thereby cooling the damping strips 40 and preventing the damping strips 40 from overheating and suppressing the excessive expansion of the fluid inside the damping strips 40.

[0058] By adopting the above-mentioned configuration, targeted cooling of the damping strip 40 is achieved, which effectively reduces the excessive deformation and decrease in clamping force caused by excessive expansion of the internal fluid of the damping strip 40 under high temperature environment, and ensures the working reliability of the damping component 4. Example 6

[0059] It is understandable that, since the bladder 43 is also located inside the shell and is in the high-temperature environment inside the shell, when the bladder 43 expands due to heat, the internal flow medium will be forced to flow into the damping strip 40 due to the constraint of the rigid cylinder 41 and the extrusion member 42, which may also lead to excessive expansion of the damping strip 40. To address the above problems, based on the above embodiment, refer to... Figure 14 , Figure 15 In this embodiment, the rigid cylinder 41 is mounted on the main body, and the rigid cylinder 41 can contact the main body for heat exchange. Meanwhile, on the rear end face of the main body, an air outlet 310 communicating with the first air passage 31 is provided, and a group of vent holes 311 is located at the end of the first air passage 31 near the front end plate 10, allowing the airflow 9 within the first air passage 31 to flow along... Figure 18 The airflow 9 flows out from the outlet 310 in the direction shown. The direction of the outflowing airflow 9 corresponds to that of the rigid cylinder 41, ensuring that the airflow 9 in the first air passage 31 flows out through the outlet 310 and its flow trajectory at least partially overlaps with that of the rigid cylinder 41, so that it can directly blow on the rigid cylinder 41 that contains the bladder 43.

[0060] With the above configuration, after the external airflow 9 enters the first air passage 31, it extends along the first air passage 31 to the rear end face of the main body and flows out through the air outlet 310. Since the air outlet 310 faces the rigid cylinder 41, the airflow 9 directly blows on the rigid cylinder 41 after it flows out. As a heat-conducting component, the rigid cylinder 41 has a relatively low temperature of airflow 9, which can effectively suppress the excessive heating of the rigid cylinder 41 and the bladder 43, and achieve targeted cooling of the bladder 43. At the same time, the rear end face of the main body and the rear end plate 11 are spaced apart, providing space for the airflow 9 to flow, ensuring that the airflow 9 can smoothly blow on the rigid cylinder 41, improving the cooling effect, and avoiding excessive expansion of the shock-absorbing strip 40 caused by excessive expansion of the flowing medium in the bladder 43. In this embodiment, the entire structure of the shock-absorbing component 4 is integrated and installed on the main body of the filter component 3, which is conducive to the overall disassembly of the main body of the filter component 3 and the shock-absorbing component 4, improving the convenience of maintenance. Example 7

[0061] In the prior art, the noise generated during the flow of airflow 9 is also one of the ways in which high-voltage power supply noise is generated. In order to effectively reduce the flow noise of airflow 9 and take into account the flow direction of airflow 9 in the second air passage 33, we continue to refer to Figure 6 , Figure 18 Based on the above embodiments, in this embodiment, an air outlet 331 is provided at one end of the second air passage 33 near the front end plate 10. The air outlet 331 faces the inside of the outer shell 1 to ensure that the airflow 9 can flow into the front end area of ​​the outer shell 1. A filter groove 32 is provided on the side of the main body opposite to the mounting groove 30. A filter element 35 (such as a filter screen or filter cotton) is installed in the filter groove 32 to filter dust and impurities in the external airflow 9. Along the axial direction of the outer shell 1, a plurality of vent holes are provided at intervals at the bottom of the filter groove 32. The plurality of vent holes form a vent hole group 311. The vent holes are connected to the second air passage 33. At the same time, an air inlet group 100 corresponding to the vent holes is provided at intervals on the side wall of the main body. The air inlet group 100 is composed of a plurality of air inlets that are evenly spaced apart to divert the airflow 9.

[0062] With the above configuration, the external airflow 9 first enters the filter tank 32 through the air inlet group 100 on the side wall of the main body. The multiple air inlets of the air inlet group 100 achieve airflow 9 diversion and avoid excessive concentration of airflow 9. After entering the filter tank 32, the airflow 9 is filtered by the filter element 35 to remove dust and impurities. Then, it enters the second air passage 33 through the vent hole at the bottom of the filter tank 32 and flows along the second air passage 33 to the air outlet 331, and finally flows into the front end area of ​​the outer shell 1. At the same time, the cooling fan 12 is installed on the rear end plate 11. When the fan 12 is working, it forms a negative pressure, so that the airflow 9 can flow from the front end to the rear end through the shell, achieving comprehensive heat dissipation inside the shell.

[0063] The air inlet assembly 100 achieves airflow 9 diversion, avoiding the noise generated by concentrated airflow 9 flowing in, and further improving the noise reduction effect; at the same time, it can ensure that the airflow 9 in the second air passage 33 can flow roughly along the axial direction of the shell, ensuring the heat exchange requirements of the damping strip 40 and ensuring the reliability of the damping assembly 4.

[0064] It should be noted that the reference Figure 1 , Figure 2 On the side wall of the outer casing 1, there is an air inlet group 100 corresponding to the air vent group 311 and an air inlet group 2 101 corresponding to the air vent group 330. Example 8

[0065] Understandably, since both the filter element 35 of filter assembly 3 and the shock-absorbing strip 40 of shock-absorbing assembly 4 are consumables, they require maintenance or replacement after a predetermined working cycle. Integrating the main bodies of shock-absorbing assembly 4 and filter assembly 3 facilitates future maintenance and replacement of both. (Reference) Figure 10 , Figure 11 Based on the above embodiment, two slots 14 are provided opposite to each other on the side walls of both sides of the outer casing 1. The slots 14 extend axially along the outer casing 1, and the end of the slot 14 near the front end plate 10 is open, while the end near the rear end plate 11 is closed and a limiting end face 140 is provided; Reference Figure 14 , Figure 16 , Figure 17 Side plates 34 are provided on both the upper and lower sides of the filter assembly 3 body. The size of the side plates 34 is adapted to the size of the slot 14. The side plates 34 and the slot 14 form a plug-in fit, so that the filter assembly 3 can be inserted into or pulled out of the outer shell 1 along the extension direction of the slot 14.

[0066] When installing the filter assembly 3, the shock-absorbing component 4 is first integrated onto the main body and inserted into the slot 14 on the side wall of the outer shell 1. It is inserted axially along the slot 14. After the end plate abuts against the limiting end face 140, the end of the filter assembly 3 is flush with the end of the shell near the front plate 10. This method facilitates the limiting of the filter assembly 3 by the front plate 10 and the limiting end face 140 after the front plate 10 is installed. When it is necessary to disassemble the filter assembly 3, simply remove the front plate 10, pull out the mounting plate 2 and the circuit board 7, and then pull the main body axially along the slot 14 to pull out the filter assembly 3. The operation is convenient. Example 9

[0067] To improve the connection strength between the outer casing 1 and the front end plate 10 and rear end plate 11, and to improve the positioning accuracy during connection, the connection structure between the front end plate 10, rear end plate 11 and the outer casing 1 is optimized based on any of the above embodiments. (Reference) Figure 4 , Figures 6 to 12At each of the four edges of the outer casing 1, a through hole 102 is provided along its axis. At both ends of the through hole 102, a countersunk hole 1020 is provided. The countersunk hole 1020 is used to accommodate the ends of the threaded cylinder 104 and the plug-in cylinder 110, preventing them from protruding outwards. One of the front plate 10 and the rear plate 11 is provided with a threaded cylinder 104 that is inserted and positioned in conjunction with the countersunk hole 1020, and the other is provided with a plug-in cylinder 110 that is inserted and positioned in conjunction with the countersunk hole 1020. The dimensions of the threaded cylinder 104 and the plug-in cylinder 110 are adapted to the countersunk hole 1020. It also includes a second screw 13, which passes through the plug-in cylinder 110 and the through hole 102 in sequence, and is threadedly connected to the threaded cylinder 104 to realize the fixed connection between the front plate 10, the rear plate 11 and the outer casing 1. Through the above-mentioned configuration, the countersunk hole 1020, the threaded cylinder 104, and the plug-in cylinder 110 achieve precise positioning of the front end plate 10 and the rear end plate 11, avoiding installation deviations. On the one hand, it can ensure that the extrusion force of the extrusion component 42 on the bladder 43 is uniform; on the other hand, it can improve the overall structural strength of the connection between the outer shell 1 and the front and rear end plates, and further suppress the resonance of the outer shell 1. Example 10

[0068] As a preferred embodiment, refer to Figure 7 , Figure 8 , Figure 19 Specifically, the connecting plate 21 and the mounting plate 2 are fixedly connected by riveting. The mounting plate 2 is used to mount the circuit board 7. Four sets of vibration filtering components are respectively set between the four corners of the connecting plate 21 and the four corners of the front end plate 10 to ensure uniform force distribution and to provide a mounting connection foundation for the connecting plate 21. The vibration filtering components include rubber pins 106, screws 107, nuts 109, and compression springs 108. The end face of the front end plate 10 is provided with a mounting cylinder 105. One end of the rubber pin 106 is inserted and fixed in the mounting cylinder 105 and is set on the front end plate 10. The rubber pin 106 is provided with an elastic surface 10 opposite to the front end plate 10. 60. The elastic surface 1060 is used to contact the connecting plate 21 to achieve elastic buffering; the screw 107 is fixedly connected to the front end plate 10, and the screw 107 is set perpendicular to the front end plate 10; the connecting plate 21 is provided with a positioning hole 210 and a clearance hole 211. The diameter of the clearance hole 211 is not less than the outer diameter of the screw 107. The positioning hole 210 is inserted and positioned with the rubber pin 106, and the clearance hole 211 allows the screw 107 to pass through; the end of the screw 107 passing through the clearance hole 211 is threaded with a nut 109. A compression spring 108 is provided between the nut 109 and the connecting plate 21. The compression spring 108 is sleeved on the screw 107 and is in a compressed state.

[0069] When installing the connecting plate 21, align the positioning hole 210 with the rubber pin 106 and insert it to position the connecting plate 21. After the screw 107 passes through the clearance hole 211, put on the compression spring 108 and tighten the nut 109 to compress the compression spring 108. The compression spring 108 applies elastic pressure to the connecting plate 21, making the connecting plate 21 and the elastic surface 1060 of the rubber pin 106 in close contact, thus installing the connecting plate 21 and the mounting plate 2. When the high-voltage power supply is working, the vibration generated by the circuit board 7 is transmitted to the connecting plate 21. After the connecting plate 21 is vibrated, it will have a slight displacement. At this time, the compression spring 108 will undergo elastic deformation. The rubber pin 106 absorbs some of the vibration energy, and the elastic surface 1060 of the rubber pin 106 also undergoes elastic deformation, further filtering the vibration. Under the dual action, the vibration is effectively suppressed, preventing the vibration from being transmitted to the front plate 10 and the outer shell 1. In this embodiment, the synergistic action of the compression spring 108 and the rubber pin 106 achieves dual filtering and buffering of vibration, effectively absorbing high-frequency vibration, with a significant vibration filtering effect, further reducing the noise caused by vibration transmission. At the same time, the positioning effect of the rubber pin 106 and the elastic pressing effect of the compression spring 108 ensure that the connecting plate 21 is installed firmly, improving the stability of the overall structure.

[0070] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A high-voltage power supply capable of reducing noise, characterized in that, include: The outer shell (1) is a cylindrical structure with open ends, and the two ends are respectively provided with a front end plate (10) and a rear end plate (11). Mounting plate (2) provides mounting base for circuit board (7), is connected to front end plate (10) and is inserted into housing (1) along housing (1) axis, and a vibration filtering component is provided between it and front end plate (10); The shock-absorbing assembly (4) is disposed on the inner side wall of the outer shell (1) and includes two sets that cooperate with the two sides of the mounting plate (2). It includes two shock-absorbing strips (40) spaced apart on the upper and lower sides of the mounting plate (2). The shock-absorbing strips (40) are provided with an inner cavity (400). The two shock-absorbing strips (40) are configured to expand when the front end plate (10) and the rear end plate (11) are assembled and connected with the outer shell (1) to form a shock-absorbing structure in contact with the mounting plate (2). When the rear end plate (11) or / and the front end plate (10) are separated from the outer shell (1) and the two shock-absorbing strips (40) are in a free state, the distance between the sides of the two shock-absorbing strips (40) that are close to each other is not less than the thickness of the mounting plate (2).

2. The high-voltage power supply capable of reducing noise according to claim 1, characterized in that, Along its length, the damping strip (40) has an inner cavity (400), and the damping assembly (4) further includes: A rigid cylinder (41) is connected to the outer shell (1); The bladder (43) is set inside the rigid cylinder (41) and communicates with the inner cavity (400) of the two damping strips (40). Both the bladder (43) and the inner cavity (400) are filled with a flowing medium. The extrusion piece (42) is guided and engaged with the rigid cylinder (41) and its end abuts against the bladder (43).

3. A high-voltage power supply capable of reducing noise according to claim 1, characterized in that, Filter components (3) are provided on the opposite side walls of the outer shell (1). The filter components (3) include a body. The side of the body near the inner side of the outer shell (1) is provided with a mounting groove (30). The two shock-absorbing strips (40) are respectively located on the two sides of the mounting groove (30).

4. A high-voltage power supply capable of reducing noise according to claim 3, characterized in that, Located on both sides of the mounting slot (30), the main body is provided with a first air passage (31) and a second air passage (33), and the external airflow can flow into the outer shell (1) along the extension direction of the first air passage (31) and the second air passage (33). The two shock-absorbing strips (40) are thermally coupled to the two side walls of the mounting groove (30).

5. A high-voltage power supply capable of reducing noise according to claim 4, characterized in that, The rear end face of the main body near the rear end plate (11) is spaced apart from the rear end plate (11). The rigid cylinder (41) is disposed on the rear end face of the main body. The rear end face is also provided with an air outlet (310) that communicates with the first air passage (31). The trajectory of the airflow in the first air passage (31) flowing out through the air outlet (310) at least partially overlaps with the rigid cylinder (41).

6. A high-voltage power supply capable of reducing noise according to claim 4, characterized in that, The second air duct (33) has an air outlet (331) at one end near the front end plate (10); On the side opposite to the mounting groove (30), the main body is provided with a filter groove (32), and a filter element (35) is installed in the filter groove (32). Along the axial direction of the outer shell (1), the bottom of the filter groove (32) is provided with a plurality of vent holes that communicate with the second air passage (33), and the side wall of the body is provided with an air inlet group (100) corresponding to the vent holes.

7. A high-voltage power supply capable of reducing noise according to claim 6, characterized in that, The outer shell (1) has two opposing slots (14) on both sides of its sidewalls, and the upper and lower sides of the body have side plates (34) that are inserted into the slots (14).

8. A high-voltage power supply capable of reducing noise according to claim 7, characterized in that, The four edges of the outer shell (1) are provided with insertion holes (102) through their axes, and countersunk holes (1020) are provided at both ends of the insertion holes (102). One of the front end plate (10) and the rear end plate (11) is provided with a threaded cylinder (104) that is inserted and positioned in conjunction with the countersunk hole (1020), and the other is provided with an insert cylinder (110) that is inserted and positioned in conjunction with the countersunk hole (1020). It also includes a screw rod (13) that passes through the insertion tube (110) and the insertion hole (102) in sequence and is threadedly connected to the threaded tube (104).

9. A high-voltage power supply capable of reducing noise according to claim 1, characterized in that, The mounting plate (2) is fixedly connected to a connecting plate (21). Four sets of vibration filtering components are provided between the four corners of the connecting plate (21) and the four corners of the front end plate (10). The vibration filtering components include: A rubber pin (106) is provided on the front end plate (10) and has an elastic surface (1060) opposite to the front end plate (10). Screw 1 (107) is fixedly connected to the front end plate (10); The connecting plate (21) is provided with a positioning hole (210) for inserting and positioning with the rubber pin (106) and a clearance hole (211) for the screw (107) to pass through; the end of the screw (107) passing through the clearance hole (211) is threaded with a nut (109), and a compression spring (108) is provided between the nut (109) and the connecting plate (21).

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