A high shielding electromagnetic interference resistant power cabinet
By installing air intake components, baffles, and multi-stage airflow guiding structures in the power cabinet, a multi-area coverage airflow circulation is formed, which solves the problem of insufficient heat dissipation at the top of the high-shield electromagnetic interference power cabinet and achieves efficient heat dissipation and system stability throughout the entire area.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HANGZHOU FOSTER PRECISION SHEET METAL CO LTD
- Filing Date
- 2026-04-30
- Publication Date
- 2026-07-07
AI Technical Summary
Existing high-shield electromagnetic interference power cabinets have high heat dissipation requirements, but are limited by the waterproof sealing of the top and cannot be equipped with fans. In addition, they generally adopt a one-way direct ventilation channel design with limited coverage, which makes it difficult to effectively cool the top area of the cabinet.
The system employs an air intake component at the bottom of the cabinet and a spoiler at the top, along with an air diversion component that integrates acceleration and diversion functions along the air intake path. Combined with a multi-stage air diversion and directional air delivery mechanism, it forms a multi-area coverage air duct circulation structure, including the coordinated design of the air intake component, spoiler, air diversion plate, and exhaust component.
It significantly improves the heat exchange efficiency inside the high-shield power cabinet, especially in the top space, and realizes efficient, low-resistance, closed-loop intelligent heat dissipation throughout the entire area. It solves the heat dissipation bottleneck that prevents the addition of a fan at the top due to waterproof sealing limitations, and improves heat dissipation uniformity and system stability.
Smart Images
Figure CN122348451A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of power cabinet heat dissipation technology, and more specifically, to a power cabinet with high shielding and electromagnetic interference resistance. Background Technology
[0002] A search revealed a power cabinet with good heat dissipation performance disclosed in publication number CN112467548A, comprising a cabinet body and a cabinet door. The cabinet door and the cabinet body together form a cavity for accommodating components. A partition is provided inside the cabinet, dividing the cavity into a lower heat dissipation cavity and an upper component cavity. The partition has several connecting holes that connect the heat dissipation cavity and the component cavity. A fan assembly is provided inside the heat dissipation cavity, with air inlets on both the left and right sides. A guide plate is provided in the middle of the heat dissipation cavity, guiding the cold air flowing vertically from the left and right air inlets into vertically upward cold air. This allows the cold air to flow smoothly into the component cavity through the connecting holes, carrying away the heat inside the component cavity before flowing out from the air outlet on the right side of the component cavity. Due to the smooth and orderly flow of cold air, the heat dissipation effect of this invention is excellent.
[0003] The aforementioned patents still have shortcomings in practical use. Existing high-shield electromagnetic interference power cabinets have high requirements for internal heat dissipation performance, but their heat dissipation structure usually only adopts a one-way straight ventilation channel design, which has limited airflow circulation area and airflow coverage, making it difficult to effectively cool the top area of the cabinet. At the same time, due to the requirement for waterproof sealing at the top, it is impossible to add a cooling fan, which further aggravates the problem of heat accumulation at the top.
[0004] Based on this, the present invention discloses a power cabinet with high shielding and resistance to electromagnetic interference. Summary of the Invention
[0005] To address the problems raised in the background art regarding high-shield electromagnetic interference-resistant power cabinets, which have high heat dissipation requirements but are limited by the inability to install fans due to top waterproof sealing, and which generally employ a unidirectional direct ventilation duct design with limited coverage, making it difficult to effectively cool the top area of the cabinet, this invention provides a high-shield electromagnetic interference-resistant power cabinet. The cabinet includes a cabinet body and several energy storage batteries housed within it. A first ventilation mesh is located at the bottom of one side of the cabinet body, and an air inlet assembly is located on the first ventilation mesh within the cabinet body. Several air diversion components are arranged in a matrix on the air inlet assembly. A baffle is located at the top of the cabinet body. A second ventilation mesh is located on the side of the cabinet body away from the air inlet assembly, and an exhaust assembly is located on the second ventilation mesh within the cabinet body. Several air diversion components are arranged in a matrix on the exhaust assembly. The air intake assembly includes a first mounting cover fixedly connected to the cabinet body, on which a plurality of intake fans are fixedly connected in a matrix, and the output direction of the intake fans is towards the inside of the cabinet body; while the exhaust assembly includes a second mounting cover fixedly connected to the cabinet body, on which a plurality of exhaust fans are fixedly connected in a matrix, and the output direction of the exhaust fans is towards the outside of the cabinet body. Traditional cooling fans often have a unidirectional airflow, which limits the airflow circulation area and coverage range for cooling inside the power cabinet, making it difficult to cover more areas. This invention, however, draws in cold air through the air intake channel, first pressurizes it, and then makes it blow in multiple directions to cover multiple areas inside the power cabinet. Finally, it works with other structures to form a multi-area coverage airflow circulation structure. As a further improvement to this technical solution, the flow diversion assembly includes a flow diversion hood, and the baffle includes a baffle body with a plurality of grooves on the baffle body, and the grooves are smoothly connected to each other; moreover, the flow diversion assembly also includes a wind concentrator hood, which has a conical structure, and the diameter of the end of the wind concentrator hood away from the ventilation net is smaller than the diameter of the other end of the ventilation net, and this end is connected to a connecting pipe, and the connecting pipe has an avoidance opening, and the flow diversion hood is fixedly connected to the connecting pipe; It should be noted that the opening direction of the avoidance opening is directly opposite the air inlet of the air diversion hood, and the size is compatible. The radius of curvature of the air inlet of the air diversion hood gradually increases from the radius of curvature of the air outlet, and the opening direction of the air inlet of the air diversion hood gradually changes from the oblique connecting pipe to the oblique upward from the opening direction of the air outlet.
[0006] Based on this, in order to further improve the efficiency of guiding the cold airflow to the upper part of the cabinet and optimize the air duct structure, the present invention uses the airflow guiding component on the air intake component to guide and accelerate the airflow to the upper part of the cabinet, so that it is quickly blown toward the baffle. As a further improvement to this technical solution, a plurality of first guide plates are fixedly connected to one side of the cabinet above the air inlet assembly. The plurality of first guide plates are arranged at an angle and the surface of the first guide plates has an arc-shaped structure. Moreover, a plurality of guide hoods arranged in a matrix are fixedly connected between the first guide plates in the cabinet. The center point of the rectangle formed by the plurality of guide hoods is set opposite to the center point of the exhaust assembly. Secondly, it should be noted that the radius of curvature of the air inlet of the guide hood gradually increases from the radius of curvature of the air outlet to the radius of curvature of the air outlet. The direction from the air inlet to the air outlet of the guide hood gradually changes from facing the arc-shaped surface of the first guide plate to facing the exhaust assembly.
[0007] In another design, to facilitate the rapid dissipation of hot air that has passed through the baffle and undergone heat exchange, and because the flow rate of the cold air entering the air intake component is reduced after passing through the upper part of the cabinet, the exhaust area needs to be adjusted accordingly to improve heat exchange efficiency and circulation speed; at the same time, the air intake component blows directly towards the opposite cold air, which may be discharged after heat exchange. As a further improvement to this technical solution, the exhaust component is located diagonally above the air inlet component, and the several air diversion components on the exhaust component are divided into upper and lower groups and are centrally symmetrical to each other, while the air diversion components on the air inlet component and the air diversion components in the upper group on the exhaust component are mirror images of each other; secondly, a second guide plate is fixedly connected above the exhaust component in the cabinet, a third guide plate is fixedly connected below the exhaust component in the cabinet, and several sets of third ventilation nets are opened on the front of the cabinet; The tilt direction of the second guide plate is arranged in a convection direction with the orientation of the upper set of air intake hoods on the exhaust assembly. The tilt direction of the third guide plate is arranged in a convection direction with the orientation of the lower set of air intake hoods on the exhaust assembly.
[0008] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This highly shielded, electromagnetic interference-resistant power cabinet incorporates an air intake component on one side of the cabinet's bottom and a baffle plate on the top. Furthermore, an airflow guiding component with acceleration and diversion functions is integrated into the air intake path. This allows cool air to not only cover the bottom area laterally upon entering the cabinet but also be guided upwards to the upper part of the cabinet. Combined with the wave-shaped groove structure on the baffle plate surface, the airflow is further dispersed and diffused, effectively expanding the heat dissipation coverage of the top area. Compared to traditional unidirectional direct ventilation ducts that only cool localized areas, this design significantly improves the heat exchange efficiency inside the highly shielded power cabinet, especially in the difficult-to-heat-dissipate top space, thus solving the heat dissipation bottleneck caused by the inability to add a fan to the top due to waterproof sealing limitations.
[0009] 2. In this highly shielded, electromagnetic interference-resistant power cabinet, a first inclined arc-shaped guide plate is arranged above the air inlet side, and guide shrouds are arranged in a matrix between them. This allows the airflow, which is obliquely directed upwards by the air-guiding components, to be efficiently guided along the inner wall of the cabinet to the top central area. The guide shrouds adopt a streamlined structure with a narrow inlet, a wide outlet, and a gradually changing direction, which not only enhances the air-gathering effect but also achieves directional cooling of key heat-generating components in the upper and middle parts. This synergistic mechanism of multi-stage air guidance and directional air delivery overcomes the airflow dead zone problem caused by traditional direct fan blowing, enabling cool air to actively cover the middle and upper areas where energy storage batteries are densely distributed, significantly improving the overall heat dissipation uniformity and system stability.
[0010] 3. In this highly shielded, electromagnetic interference-resistant power cabinet, the exhaust fan is positioned diagonally above the intake fan, with symmetrically arranged airflow guiding components and baffles above and below it. This creates a three-dimensional circulating airflow channel within the cabinet, flowing from bottom to top and back to the exhaust port. Hot air from the upper part is turbulent and guided by the second baffle to the upper airflow guiding component for extraction, while the airflow after heat exchange at the bottom is guided by the third baffle to the lower airflow guiding component for discharge. The upper and lower exhaust paths complement each other, and the airflow direction matches the baffle structure. This combination of double-layer exhaust and symmetrical airflow not only accelerates the exhaust of hot air but also maintains a continuous and stable negative pressure circulation within the cabinet. Thus, without compromising electromagnetic shielding and waterproofing performance, it achieves efficient, low-resistance, and closed-loop intelligent heat dissipation throughout the entire area. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial structural cross-sectional view of the cabinet body of the present invention; Figure 3 This is a second partial structural cross-sectional view of the cabinet body of the present invention; Figure 4 This is a schematic diagram of the internal structure of the cabinet of the present invention; Figure 5 This is a schematic diagram of the air intake assembly of the present invention; Figure 6 This is a schematic diagram of the drainage component of the present invention; Figure 7 This is a schematic diagram of the structure of the first guide plate of the present invention; Figure 8 This is a schematic diagram of the structure of the air deflector of the present invention; Figure 9 This is a schematic diagram of the exhaust assembly of the present invention; Figure 10 This is a schematic diagram of the air duct configuration inside the cabinet of the present invention.
[0012] The meanings of the labels in the diagram are as follows: 1. Cabinet; 2. Energy storage battery; 3. First ventilation mesh; 4. Air intake assembly; 5. First air deflector; 6. Air deflector cover; 7. Baffle plate; 8. Second ventilation mesh; 9. Exhaust assembly; 10. Second air deflector; 11. Third air deflector; 12. Third ventilation mesh; 13. Air diversion assembly; 41. First mounting cover; 42. Inlet fan; 71. Spoiler body; 72. Groove; 91. Second mounting cover; 92. Exhaust fan; 131. Wind concentrator; 132. Connecting pipe; 133. Clearance opening; 134. Drainage hood. Detailed Implementation
[0013] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0014] Existing high-shield electromagnetic interference power cabinets have high heat dissipation requirements, but are limited by the waterproof seal on the top and cannot be equipped with fans. In addition, they generally adopt a one-way direct ventilation channel design with limited coverage, which makes it difficult to effectively cool the top area of the cabinet.
[0015] Therefore, this invention provides a highly shielded power cabinet that resists electromagnetic interference. See [link to relevant documentation]. Figures 1-4 As shown, it includes a cabinet 1 and several energy storage batteries 2 installed inside it. A first ventilation net 3 is installed at the bottom of one side of the cabinet 1. An air intake component 4 is installed on the first ventilation net 3 inside the cabinet 1. Several air diversion components 13 are arranged in a matrix on the air intake component 4. A baffle 7 is installed on the top of the cabinet 1. A second ventilation net 8 is installed on the side of the cabinet 1 away from the air intake component 4. An exhaust component 9 is installed on the second ventilation net 8 inside the cabinet 1. Several air diversion components 13 are arranged in a matrix on the exhaust component 9. The air intake assembly 4 includes a first mounting cover 41 fixedly connected inside the cabinet 1. Several air intake fans 42 are fixedly connected to the first mounting cover 41 in a matrix. The output direction of the air intake fans 42 is towards the inside of the cabinet 1. The exhaust assembly 9 includes a second mounting cover 91 fixedly connected inside the cabinet 1. Several exhaust fans 92 are fixedly connected to the second mounting cover 91 in a matrix. The output direction of the exhaust fans 92 is towards the outside of the cabinet 1.
[0016] During work, through Figure 4As shown, the air duct design and convection direction within the entire cabinet 1 are illustrated. Specifically, cool air is drawn in from the outside through the air intake assembly 4 located on the lower side of one side of the cabinet 1, i.e., several intake fans 42 on the first mounting cover 41. It should be noted that the first ventilation mesh 3, the second ventilation mesh 8, and the third ventilation mesh 12 in this invention are all cutoff waveguide window structures, combining ventilation, heat dissipation, and electromagnetic shielding functions. This is a mature existing technology and will not be elaborated further. The drawn-in cool air is then accelerated by the guiding assembly 13, with a portion blown to the opposite side to dissipate heat from the bottom of the cabinet 1, and another portion blown diagonally upwards to one side of the cabinet 1, ultimately reaching the top of the cabinet 1 to dissipate heat from the upper part of the cabinet 1. Furthermore, the airflow is turbulent by the baffle 7, causing the cool air to fluctuate in the upper part of the cabinet 1, increasing the effective heat dissipation coverage area of the upper space. Finally, the air flows to the vicinity of the exhaust assembly 9 and is drawn out of the cabinet 1 by the exhaust fans 92 on the second mounting cover 91, thus forming a cycle.
[0017] For details, see Figures 4-6 As shown, traditional cooling fans often have a unidirectional airflow direction, which limits the airflow circulation area and coverage range for heat dissipation inside the power cabinet, making it difficult to cover more areas. In contrast, this invention uses a method where the cold air drawn in through the air intake channel is first pressurized and then blown in multiple directions to cover multiple areas inside the power cabinet. Finally, it is combined with other structures to form a multi-area coverage airflow circulation structure. Specifically, the flow diversion assembly 13 includes a flow diversion hood 134, and the baffle 7 includes a baffle body 71. The baffle body 71 has several grooves 72, and the grooves 72 are smoothly connected to each other. The flow diversion assembly 13 also includes a wind concentrator hood 131, which has a conical structure. The diameter of the end of the wind concentrator hood 131 away from the ventilation net is smaller than that of the other end. The end of the wind concentrator hood 131 is connected to a connecting pipe 132. The connecting pipe 132 has an avoidance opening 133. The flow diversion hood 134 is fixedly connected to the connecting pipe 132. It should be noted that the opening direction of the clearance opening 133 is directly opposite to the air inlet of the air intake hood 134, and the sizes are compatible. The radius of curvature of the air inlet of the air intake hood 134 gradually increases from the radius of curvature of the air outlet, and the opening direction of the air inlet of the air intake hood 134 gradually changes from the oblique connecting pipe 132 to the oblique upward from the opening direction of the air outlet.
[0018] When working, combine Figure 4 and Figure 6As can be seen, due to the narrowing of the air outlet end of the air-concentrating shroud 131, according to Bernoulli's principle, the wind speed at the connecting pipe 132 will increase. Thus, the air blown out through the connecting pipe 132 will blow into the cabinet 1 at a higher speed. Then, through the design of the clearance opening 133 on the connecting pipe 132, and with the smooth connection of the air-guiding shroud 134 near the clearance opening 133, part of the cold air coming out of the connecting pipe 132 is blown forward to dissipate heat on the bottom of the cabinet 1, that is, the energy storage battery 2 and related electrical structures near the bottom of the cabinet 1 facing the area of the inlet fan 42. Part of the air is guided by the air-guiding shroud 134 and blown upward at an angle to cover the upper half of the cabinet 1. Furthermore, the structure of the air intake hood 134 meets the requirements of a streamlined design, which is conducive to airflow guidance. Secondly, its air inlet is narrow and its air outlet is wide, which further improves the airflow coverage area. In addition, the design of its opening direction changing from obliquely opposite to the connecting pipe 132 to obliquely upward can guide the cold air from the air outlet part of the connecting pipe 132 to the air intake hood 134 and guide it to the upper part of the cabinet 1.
[0019] Further, see Figure 4 and Figures 7-8 As shown, in order to further improve the efficiency of guiding the cold airflow to the upper part of the cabinet 1 and optimize the air duct structure, the present invention uses the airflow guiding component 13 on the air inlet component 4 to guide and accelerate the airflow to the upper part of the cabinet 1, so that it is quickly blown toward the baffle plate 7. Specifically, inside the cabinet 1, a number of first guide plates 5 are fixedly connected above the air inlet assembly 4 on one side. The first guide plates 5 are arranged at an angle and have an arc-shaped surface. In addition, inside the cabinet 1, a number of guide hoods 6 are fixedly connected between the first guide plates 5 in a matrix arrangement. The center point of the rectangle formed by the guide hoods 6 is set opposite to the center point of the exhaust assembly 9. Furthermore, it should be noted that the radius of curvature of the air inlet of the guide hood 6 gradually increases from the radius of curvature of the air outlet to the air outlet. The direction from the air inlet to the air outlet of the guide hood 6 changes from facing the arc-shaped surface of the first guide plate 5 to facing the exhaust assembly 9.
[0020] During operation, the airflow is guided by the air intake shroud 134 on the air intake assembly 4, causing a portion of the cold air drawn in by the intake fan 42 to be blown diagonally upwards and towards the inner wall of the cabinet 1. Thus, the several first guide plates 5 located on the air intake assembly 4, along with the arc-shaped structure on their surfaces, quickly guide the airflow adhering to the inner wall of the cabinet 1 to the top of the cabinet 1. Furthermore, the guide plate wall formed by the several first guide plates 5 is adapted to the dimensions of the side wall of the cabinet 1. During the flow to the top of the cabinet 1, in order to optimize the airflow coverage in the middle area of the upper part of the cabinet 1, this invention… Several air guide hoods 6 are added in a matrix layout along the airflow path. The overall design concept of the air guide hood 6 is similar to that of the air diverter hood 134, but there are also differences. First, its air inlet points to the first air guide plate 5. Second, its air outlet points directly to the opposite exhaust component 9, which facilitates direct heat exchange and extraction into the cabinet 1. Moreover, the opening direction changes gradually towards the central area of the upper part of the cabinet 1. This results in an air gathering area on the upper half of the air guide hood 6, which can increase its airflow efficiency and allow more airflow to pass through the air guide hood 6 and blow directly towards the central area of the upper part of the cabinet 1.
[0021] The airflow that ultimately flows to the spoiler 7 is affected by the design of several grooves 72 on the spoiler body 71, which gives the spoiler body 71 a wave-like structure. Figure 10 and Figure 4 As can be seen, the airflow is disturbed in a wave-like manner, which can cover more areas of the upper part of cabinet 1.
[0022] Furthermore, see Figure 4 and Figure 9 As shown, in order to facilitate the rapid dissipation of the hot air that has been turbulent down through the baffle 7 and has undergone heat exchange, and because the flow rate of the cold air entering through the air inlet assembly 4 is reduced after passing through the upper part of the cabinet 1, the exhaust area needs to be adjusted accordingly in order to improve heat exchange efficiency and circulation speed; at the same time, the air inlet assembly 4 blows directly towards the opposite cold air, which may be discharged after heat exchange. Specifically, the exhaust assembly 9 is located diagonally above the air inlet assembly 4, and the several air diversion components 13 on the exhaust assembly 9 are divided into two groups, upper and lower, and are centrally symmetrical to each other. The air diversion components 13 on the air inlet assembly 4 and the air diversion components 13 in the upper group on the exhaust assembly 9 are mirror images of each other. Secondly, a second guide plate 10 is fixedly connected above the exhaust assembly 9 inside the cabinet 1, and a third guide plate 11 is fixedly connected below the exhaust assembly 9 inside the cabinet 1. Several groups of third ventilation nets 12 are opened on the front of the cabinet 1. The tilt direction of the second guide plate 10 is arranged in a convection direction with the orientation of the upper set of air intake hoods 134 on the exhaust assembly 9. The tilt direction of the third guide plate 11 is arranged in a convection direction with the orientation of the lower set of air intake hoods 134 on the exhaust assembly 9.
[0023] When working, refer directly Figure 10 As can be seen from the air duct design within the entire cabinet 1, firstly, the intake fan 42 draws in cold air, then a portion blows directly towards the opposite direction to exchange heat with the electrical components at the bottom of the cabinet 1; another portion is guided by the airflow guide shroud 134 on the connecting pipe 132 and blows obliquely towards the upper part of the cabinet 1, pointing towards the inner wall of the cabinet 1. This airflow is accelerated by the first guide plate 5 and flows upwards towards the cabinet 1. During this process, some airflow is guided by the airflow guide shroud 6 and then flows directly towards the central area of the upper part of the cabinet 1; the remaining airflow blows towards the upper part of the cabinet 1 and the top baffle 7. The top airflow is turbulent by the wave-shaped structure of the baffle body 71, increasing the coverage area of the upper airflow; then it blows downwards, and during the downward blowing process, it is guided to the second guide plate 10, and the second guide plate 10 and the third guide plate 1 The structure of the first guide plate 5 is the same as that of the second guide plate 1, only the layout is different; several second guide plates 10 guide the airflow to the upper group of guide hoods 134 on the second mounting cover 91, and then it is extracted by the exhaust fan 92. The airflow guided by the guide hood 6 is also drawn out by the exhaust fan 92. Therefore, the upper group of guide hoods 134 on the second mounting cover 91 needs to be mirror symmetrical with the guide hoods 134 of the first mounting cover 41, while the lower group of guide hoods 134 on the second mounting cover 91 needs to be centrally symmetrical with the upper group of guide hoods 134. In this way, the lower group of guide hoods 134 will be guided by the third guide plate 11 to directly guide the airflow in the lower part of the cabinet 1 to the exhaust fan 92 for extraction. This part of the airflow comes from the airflow blown directly by the inlet fan 42 towards the opposite direction.
[0024] In summary, this solution integrates accelerated airflow diversion at the intake, multi-directional airflow in the middle, top turbulence diffusion, and double-layer symmetrical exhaust to construct a three-dimensional circulating air duct system covering the entire cabinet area. While meeting the top waterproofing requirements, it overcomes the technical defects of traditional unidirectional air ducts, such as limited heat dissipation area and insufficient top cooling. Furthermore, it effectively solves the problem that existing high-shielded electromagnetic shielding power cabinets, due to their high heat dissipation requirements, are limited by the inability to install fans due to top waterproofing and generally adopt a unidirectional direct ventilation duct design with limited coverage, making it difficult to effectively cool the top area of the cabinet.
[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A highly shielded, electromagnetic interference-resistant power cabinet, comprising a cabinet body (1) and a plurality of energy storage batteries (2) disposed therein, characterized in that: A first ventilation net (3) is provided on the bottom of one side of the cabinet (1). An air inlet assembly (4) is provided on the first ventilation net (3) inside the cabinet (1). Several air diversion assemblies (13) are arranged in a matrix on the air inlet assembly (4). A baffle plate (7) is provided on the top of the cabinet (1). A second ventilation net (8) is provided on the side of the cabinet (1) away from the air inlet assembly (4). An exhaust assembly (9) is provided on the second ventilation net (8) inside the cabinet (1). Several air diversion assemblies (13) are arranged in a matrix on the exhaust assembly (9). The flow-guiding component (13) includes a flow-guiding cover (134), and the baffle (7) includes a baffle body (71). The baffle body (71) has several grooves (72) and the grooves (72) are smoothly connected to each other. The exhaust assembly (9) has several drainage components (13) divided into two groups, upper and lower, which are symmetrical to each other. The drainage components (13) on the air intake assembly (4) and the drainage components (13) in the upper group on the exhaust assembly (9) are mirror images of each other.
2. The high-shield electromagnetic interference resistant power cabinet according to claim 1, characterized in that: The air intake assembly (4) includes a first mounting cover (41) fixedly connected inside the cabinet (1). Several air intake fans (42) are fixedly connected in a matrix on the first mounting cover (41). The output direction of the air intake fans (42) is towards the inside of the cabinet (1).
3. The high-shield electromagnetic interference resistant power cabinet according to claim 1, characterized in that: The exhaust assembly (9) includes a second mounting cover (91) fixedly connected inside the cabinet (1). Several exhaust fans (92) are fixedly connected in a matrix on the second mounting cover (91). The output direction of the exhaust fans (92) faces the outside of the cabinet (1).
4. The high-shield electromagnetic interference resistant power cabinet according to claim 1, characterized in that: The drainage component (13) also includes a wind-gathering hood (131), which has a conical structure. The diameter of the end of the wind-gathering hood (131) away from the ventilation net is smaller than the diameter of the other end of the wind-gathering hood (131), and the other end is connected to a connecting pipe (132). An avoidance opening (133) is provided on the connecting pipe (132), and the drainage hood (134) is fixedly connected to the connecting pipe (132).
5. The high-shield electromagnetic interference resistant power cabinet according to claim 4, characterized in that: The opening direction of the avoidance opening (133) is directly opposite to the air inlet of the air inlet of the air inlet hood (134), and the size is compatible. The radius of curvature of the air inlet of the air inlet hood (134) gradually increases to the radius of curvature of the air outlet. The opening direction of the air inlet of the air inlet of the air inlet hood (134) gradually changes from the oblique connecting pipe (132) to the oblique upward.
6. The high-shield electromagnetic interference resistant power cabinet according to claim 5, characterized in that: The exhaust assembly (9) is located diagonally above the air intake assembly (4).
7. The high-shield electromagnetic interference resistant power cabinet according to claim 6, characterized in that: A plurality of first guide plates (5) are fixedly connected to one side of the cabinet (1) above the air intake assembly (4). The plurality of first guide plates (5) are arranged at an angle and the surface of the first guide plates (5) is arc-shaped.
8. The high-shield electromagnetic interference resistant power cabinet according to claim 7, characterized in that: Inside the cabinet (1), between the first guide plates (5), there are several guide hoods (6) arranged in a matrix. The center point of the rectangle formed by the several guide hoods (6) is set opposite to the center point of the exhaust assembly (9).
9. The high-shield electromagnetic interference resistant power cabinet according to claim 8, characterized in that: The radius of curvature of the air inlet of the air guide shroud (6) gradually increases from the radius of curvature of the air outlet. The direction from the air inlet to the air outlet of the air guide shroud (6) gradually changes from the arc surface facing the first guide plate (5) to the air extraction assembly (9).
10. The high-shield electromagnetic interference resistant power cabinet according to claim 9, characterized in that: A second guide plate (10) is fixedly connected above the exhaust assembly (9) inside the cabinet (1), and a third guide plate (11) is fixedly connected below the exhaust assembly (9) inside the cabinet (1). Several sets of third ventilation nets (12) are opened on the front of the cabinet (1). The tilting direction of the second guide plate (10) is arranged in a convection direction with the orientation of the upper set of hoods (134) on the exhaust assembly (9); The tilt direction of the third guide plate (11) is arranged in a convection direction with the orientation of the lower set of hoods (134) on the exhaust assembly (9).