Air guide structure, cabinet, parallel connection assembly and electrical system

Abstract

This invention discloses an air guide structure, a cabinet, a parallel operation assembly, and an electrical system. The air guide structure is used in an electrical cabinet, which has an air outlet and an air inlet arranged sequentially from top to bottom. The air guide structure includes an air guide shroud; the air guide shroud is used to cover the air outlet and communicate with the air outlet to form an air guide cavity, and its bottom has several air passages; one end of each air passage is connected to the air guide cavity, and the other end is adapted to exhaust air in a direction away from the air inlet, and at least some of the air passages are adapted to drain water accumulated in the air guide cavity. The cabinet includes the electrical cabinet and the above-mentioned air guide structure. The parallel operation assembly and the electrical system both use the above-mentioned cabinet. The electrical cabinet of this invention has high protection and is not prone to hot airflow short circuits.

Description

Technical Field

[0001] This invention relates to the field of electrical technology, specifically to an air guide structure, cabinet, parallel assembly, and electrical system. Background Technology

[0002] In power equipment cabinets, especially converter cabinets, heat dissipation capacity has a significant impact on their service life and stability. Currently, the common heat dissipation solution in outdoor power equipment cabinets is air cooling. Many cabinets, based on the layout of the electrical components inside, often have air inlets and outlets arranged sequentially from top to bottom on the same side panel. To ensure the cabinet's protection, air inlets are fitted with louvers, and air outlets with louvers. These louvers are often angled outwards from top to bottom to prevent rainwater from entering the cabinet. However, this design can easily cause hot air exhausted from the outlet to re-enter the inlet, creating a hot airflow short circuit and thus affecting heat dissipation efficiency. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned defects or problems in the prior art and to provide an air guide structure, cabinet, parallel assembly and electrical system, wherein the electrical cabinet has high protection and is not prone to hot airflow short circuit.

[0004] To achieve the above objectives, the present invention and its preferred embodiments employ the following technical solutions, but the embodiments are not limited to the following solutions:

[0005] Technical Solution 1: An air guiding structure for an electrical cabinet, wherein the electrical cabinet is provided with an air outlet and an air inlet from top to bottom, and the air guiding structure includes an air guide hood; the air guide hood is used to cover the air outlet and form an air guiding cavity connected to the air outlet, and its bottom is provided with a plurality of air passages; one end of each air passage is connected to the air guiding cavity, and the other end is adapted to exhaust air in a direction away from the air inlet, and at least a portion of the air passages are adapted to drain water accumulated in the air guiding cavity.

[0006] Based on technical solution one, there is also technical solution two. In technical solution two, the bottom of the air guide hood is provided with a wind baffle extending in the horizontal direction, and each air passage is formed at the bottom end of the wind baffle and is suitable for exhausting air in the horizontal direction.

[0007] Based on technical solution two, there is also technical solution three. In technical solution three, the side of the air guide hood has several exhaust channels. One end of each exhaust channel is connected to the air guide cavity, and the other end is provided to exhaust air in a direction away from the air inlet. The output end of the air passage is away from the air outlet in a first direction.

[0008] Based on technical solution three, there is also technical solution four. In technical solution four, the side of the air guide hood is provided with a first air guide plate extending in a vertical direction. The first air guide plate is provided with a plurality of first exhaust ports that exhaust air upwards, and the first exhaust ports form an exhaust channel.

[0009] Based on technical solution four, technical solution five is also provided. In technical solution five, the air inlet and the air outlet are both opened along the first direction; the side of the air guide hood is also provided with a second air guide plate that is inclined relative to both the first direction and the vertical direction. The second air guide plate is provided with a plurality of upward exhaust vents, and the second exhaust vents form an exhaust channel.

[0010] Based on technical solution five, there is also technical solution six, which includes a first protective cotton, which is used to install at the air outlet.

[0011] Based on technical solution six, technical solution seven is also provided, which further includes a second protective cotton; the second protective cotton is disposed between the second air guide plate and the first protective cotton along the first direction and extends vertically to block rainwater from entering the first protective cotton; the second air guide plate is perpendicular to the second direction, and the projection of the second air guide plate along the second direction onto the second protective cotton is located in the middle of the second protective cotton.

[0012] Based on technical solution seven, technical solution eight is also provided. In technical solution eight, the air guide hood is further provided with a water guide plate that is inclined relative to both the first direction and the vertical direction. The water guide plate divides the air guide hood into an upper air passage cavity corresponding to the air outlet and a lower drainage cavity corresponding to the air passage channel. The first protective cotton and the second protective cotton are both located in the upper air passage cavity and have the same ventilation rate. The second protective cotton divides the upper air passage cavity along the first direction into an air outlet cavity away from the air outlet and a waterproof cavity close to the air outlet. The water guide plate is provided with a first water passage hole corresponding to the air outlet cavity and a second water passage hole corresponding to the waterproof cavity. The coverage rate of the first water passage hole on the bottom wall of the air outlet cavity is at least 70%, and the coverage rate of the second water passage hole on the bottom wall of the waterproof cavity is at least 70%. The length of the air outlet cavity along the first direction is at least twice the length of the waterproof cavity along the first direction.

[0013] Based on technical solution eight, technical solution nine is also provided. In technical solution nine, the side of the air guide hood near the air outlet is provided with a water-blocking part. The water-blocking part is adapted to cooperate with the first protective cotton to form a water-blocking cavity. The water-blocking part is adapted to extend into the electrical cabinet through the air outlet and is provided with a water-blocking plate extending vertically and opposite to the first protective cotton. The upper middle part of the water-blocking plate is provided with an exhaust port opposite to the air outlet, and the air passage area of ​​the exhaust port is at least 80% of the air passage area of ​​the air outlet. The bottom of the water-blocking part corresponding to the water-blocking cavity is also provided with a water-guiding plate that is inclined relative to both the vertical direction and the first direction. The water-guiding plate is provided with a first mounting part extending vertically corresponding to the first protective cotton. The first protective cotton extends vertically and is mounted on the first mounting part. The first mounting part is provided with a third water passage hole.

[0014] Based on technical solutions eight or nine, a technical solution ten is also provided. In technical solution ten, the first air guide plate includes a first air guide side plate perpendicular to the first direction and two second air guide side plates arranged parallel to each other and opposite to each other along a third direction perpendicular to the first direction. The second air guide plate is connected to the upper end of the first air guide side plate and the side ends of the two second air guide side plates. The first exhaust port of the first air guide side plate is at least partially located below the air outlet, and the coverage of the first exhaust port of the first air guide side plate is at least 85%. The first exhaust port of the second air guide side plate is located in its lower part, and the coverage of the second exhaust port of the second air guide plate is at least 85%.

[0015] Technical Solution Eleven: The present invention also provides a cabinet, including an electrical cabinet and an air guide structure as described in any one of Technical Solutions One to Ten. The electrical cabinet is provided with an air outlet and an air inlet from top to bottom. The air guide structure is installed at the air outlet and communicates with the air outlet to form an air guide cavity.

[0016] Technical solution 12: The present invention also provides a parallel assembly, including at least two cabinets as described in technical solution 11, wherein the air inlets and outlets of the electrical cabinets are opened along a horizontal first direction, and each electrical cabinet is adjacent to the other along a horizontal third direction perpendicular to the first direction.

[0017] Technical Solution Thirteen: The present invention also provides an electrical system, including a plurality of parallel-connected components arranged at intervals along a first direction. As described in Technical Solution Twelve, the electrical cabinet has two parallel and opposite side panels arranged along the first direction. Air outlets are symmetrically arranged on the two side panels, and at least one side panel has an air inlet located below the air outlet.

[0018] As can be seen from the above description of the present invention and its preferred embodiments, compared with the prior art, the technical solution of the present invention and its preferred embodiments have the following beneficial effects due to the adoption of the following technical means:

[0019] In technical solution one, the air guide hood is connected to the air outlet to form an air guide cavity. Several air passages are provided at the bottom of the air guide cavity. One end of each air passage is connected to the air guide cavity, and the other end is suitable for exhausting air in a direction away from the air inlet. At least some of the air passages are suitable for draining accumulated water from the air guide cavity. The air passages exhausting air in a direction away from the air inlet means that the hot air exhausted from the air passages will not enter the air inlet under the condition of no external interference. The direction away from the air inlet can be horizontal or upward (including vertical upward and inclined upward), as long as the hot air exhausted from the air passages does not enter the air inlet. Therefore, the hot air exhausted from the air outlet can be discharged through the air passages. Due to the low density of hot air, the hot air exhausted from the air passages flows upward and will not flow downward into the air inlet, thus avoiding short-circuiting of the hot air and ensuring the heat dissipation efficiency of the electrical cabinet. At least a portion of the air passage is designed to drain water from the air guide cavity. Therefore, this passage can promptly drain water from the air guide cavity when it is present, and can also serve as a passage to expel hot air from the cavity when it is dry. This prevents rainwater from entering the electrical cabinet through the air outlet, ensuring the cabinet's protection. When the air outlet is directly above the air inlet, the air guide cover also acts as a water-blocking structure for the air inlet, preventing rainwater from entering the electrical cabinet from the inlet. Thus, this technical solution not only prevents hot airflow from short-circuiting into the air inlet but also ensures the electrical cabinet's protection.

[0020] In technical solution two, a horizontally extending baffle is provided at the bottom of the air guide hood. This baffle, located at the lowest point of the air guide hood, ensures that water accumulated in the air guide cavity falls onto the horizontal baffle. The baffle also functions as a water-guiding structure, allowing water in the air guide cavity to flow smoothly through the baffle and then to the air passage for timely discharge. Furthermore, the air passage is designed for horizontal exhaust, ensuring that each passage is suitable for draining water from the air guide cavity. This facilitates timely water removal, especially when exhaust vents are located on the sides and / or top of the air guide hood, thus guaranteeing the protection of the electrical cabinet. The fact that each air passage is formed at the bottom of the baffle also facilitates manufacturing.

[0021] In technical solution three, the side of the air guide hood is also provided with several exhaust channels. One end of each exhaust channel is connected to the air guide cavity, and the other end is suitable for exhausting air in a direction away from the air inlet, which improves the air outlet efficiency of the air guide hood. Due to the upward flow of hot air, the hot airflow is more easily discharged from the side of the air guide cavity, that is, from the exhaust channel. Therefore, most of the hot air discharged from the air outlet of the electrical cabinet is discharged upward through the exhaust channel after passing through the air guide cavity, and a small portion of the hot air is discharged horizontally through the air passage, ensuring air outlet efficiency and minimizing the risk of hot air discharged through the air passage entering the air inlet, thus preventing short-circuiting of the hot airflow. The exhaust channel allows rainwater to enter the air guide cavity through it, and the rainwater entering the air guide cavity can be discharged horizontally through the air passage, thereby ensuring the protection of the electrical cabinet. Similarly, the hot air discharged from the exhaust channel can be discharged either horizontally or upward, as long as it enters the air inlet under the condition that there is no external interference. The output end of the air passage is moved away from the air outlet along the first direction so that the hot air or water discharged by the air passage is further away from the air inlet, thereby avoiding the intake of rainwater or hot air at the air inlet.

[0022] In technical solution four, the first air guide plate extends vertically, making it easy to manufacture. The first exhaust port exhausts air upwards, ensuring that even with external interference, the hot air exhausted from the first exhaust port is less likely to flow downwards into the air inlet, further preventing short-circuiting of the hot airflow. It should be understood that the upward exhaust port on the first air guide plate implies the presence of a channel at the first exhaust port that changes direction. This channel can be either a wind guide or an inclined air guide channel formed by the thickness of the first air guide plate itself.

[0023] In technical solution five, the second air guide plate ensures that most of the hot air discharged from the electrical cabinet's outlet is discharged upwards through the first and second exhaust vents after passing through the air guide cavity. Similarly, even with external interference, the hot air discharged from the second exhaust vent is less likely to flow downwards into the air inlet, further preventing short-circuiting of the hot airflow. Because the second air guide plate is inclined relative to both the first and vertical directions, it can also change the direction of rainwater flow, reducing the amount of rainwater entering the air guide cavity and slowing down the rainwater flow, thus further preventing water accumulation in the air guide cavity and ensuring the protection of the electrical cabinet. Furthermore, due to the inclined design of the second air guide plate, when setting up the upward-exhausting second exhaust vent, there is no need to set up an air guide channel like the vertically extending first air guide plate; instead, ventilation holes can be directly opened. Therefore, the ventilation rate of the second air guide plate is higher than that of the first air guide plate, and the inclined structure is more aesthetically pleasing and easily recognizable.

[0024] In technical solution six, the first protective cotton can prevent rainwater and dust from entering the electrical cabinet through the air outlet, further ensuring the protection of the electrical cabinet.

[0025] In technical solution seven, a second protective layer is installed, thus forming double protection to prevent rainwater and dust from entering the electrical cabinet through the air outlet, ensuring the cabinet's protective properties. Specifically, rainwater, after hitting the first air guide plate, flows downwards. A small portion of the rainwater entering the air guide cavity through the first exhaust vent is then discharged through the air passage. After hitting the second air guide plate, some rainwater changes direction and flows outside the air guide cover, while some enters the air guide cavity through the second exhaust vent, experiencing initial deceleration. Because the projection of the second air guide plate along the second direction onto the second protective layer is located in the middle of the second protective layer, not only are there always areas where the second protective layer retains minimal water seepage, ensuring its absorbency for rainwater, but also... Rainwater mainly falls in the middle of the second protective layer, thus its speed is greatly reduced and it undergoes a second deceleration after passing through the second protective layer. Most of the rainwater is absorbed by the second protective layer and flows downward until it enters the water passage. Furthermore, since the rainwater mainly falls in the middle of the second protective layer, even if a small amount of rainwater passes through the second protective layer, it will only continue to move downward and fall into the wind passage of the wind deflector. The first protective layer can still form the last line of defense to isolate the rainwater outside the electrical cabinet, thus ensuring the protection of the electrical cabinet, especially its waterproofness. Therefore, the rainwater encounters multiple obstacles on its way from the wind deflector to the air outlet, thereby achieving multiple decelerations and multiple protections for the rainwater, effectively ensuring the protection of the electrical cabinet.

[0026] In technical solution eight, the water guide plate allows rainwater entering the air outlet cavity to be discharged into the lower drainage cavity through the first water passage hole, while rainwater entering the waterproof cavity can be discharged into the lower drainage cavity in a timely manner through the second water passage hole, preventing water accumulation and ensuring the protection of the electrical cabinet. Specifically, after entering the air outlet cavity, rainwater is slowed down twice by the second protective cotton and flows downward along the second protective cotton. Some rainwater falls directly into the drainage cavity through the first water passage hole near the second protective cotton, while some rainwater flows downward along the slope of the water guide plate to the remaining first water passage holes further away from the second protective cotton and falls into the drainage cavity. The inclined setting of the water guide plate can basically change the direction of rainwater movement, causing it to flow downward at an angle. The first water passage hole on the water guide plate further changes the direction of rainwater movement, causing it to fall downward into the drainage cavity. Since the coverage of the first water passage hole on the bottom wall of the air outlet cavity is at least 70%, rainwater in the air outlet cavity can fall into the drainage cavity at multiple points simultaneously, ensuring timely drainage of rainwater. Furthermore, the length of the air outlet cavity along the first direction is at least twice the length of the waterproof cavity along the first direction. This allows for a higher air outlet rate and enables the second protective cotton and the water guide plate to work together effectively to change the direction of rainwater, preventing rainwater from entering the protective cavity. Similarly, when rainwater enters the waterproof cavity, the rainwater passing through the second protective cotton hits the water guide plate. The bottom wall of the protective cavity is positioned higher than the water guide plate, making it easier for rainwater on the bottom wall to slide downwards along the water guide plate and simultaneously fall into the drainage cavity through the second water passage hole, ensuring timely drainage. The inclined design of the water guide plate makes it easier for rainwater to flow downwards, away from the air outlet and the first protective cotton, preventing rainwater from entering the electrical cabinet. In addition, both the first and second protective cotton are located within the air passage cavity, allowing them to dry naturally under dry conditions, thus enabling recycling. The ventilation rates of the first and second protective cotton are consistent, ensuring protection while avoiding any impact on the air outlet effect.

[0027] In technical solution nine, as the above analysis shows, even if rainwater hits the first protective cotton, it will only hit the bottom of the first protective cotton. Therefore, rainwater that passes through the first protective cotton and enters the water-blocking cavity will only hit the lower part of the water-blocking plate, so that the upper middle part of the water-blocking plate can form an exhaust port opposite to the air outlet, which is conducive to the discharge of hot air. Even if rainwater falls into the water-blocking cavity, the rainwater in the water-blocking cavity can be discharged into the waterproof cavity through the third water passage of the first mounting part under the action of the water guide plate, and then discharged through the air passage. Therefore, the setting of the water-blocking cavity makes the rainwater undergo a deceleration before entering the electrical cabinet. Thus, the rainwater entering the electrical cabinet has to undergo at least four decelerations: the second air guide plate, the first protective cotton, the third protective cotton, and the water-blocking plate, achieving multiple deceleration and multiple protections. The water-blocking cavity forms the last line of defense to isolate the rainwater from the outside. Therefore, the above settings maximize the air outlet rate while improving the protection. In addition, the first protective cotton can be directly installed on the air guide cover through the first installation part, so during installation, only the air guide cover and the electrical cabinet need to be installed, making disassembly and assembly more convenient and easy to replace and maintain.

[0028] In technical solution ten, the first air guide plate includes a first air guide side plate and two second air guide side plates. The coverage of the first exhaust port of the first air guide side plate is at least 85%. The first exhaust port of the second air guide side plate is located in its lower part, and the coverage of the second exhaust port of the second air guide plate is at least 85%. Since the second air guide plate is connected to the upper end of the first air guide side plate and the side ends of the two second air guide side plates, the above structural arrangement ensures that the second exhaust port is located above each of the first exhaust ports, and the first air guide side plate is opposite to the air outlet. Due to the hot airflow... The upward airflow characteristic ensures that most of the hot air is discharged through the second exhaust port of the second air guide plate, then through the first exhaust port of the first air guide plate, then through the first exhaust port of the second air guide plate, and finally through the air passage at the bottom. This design not only gives the air guide hood high ventilation efficiency but also prevents hot airflow from interfering with each other when electrical cabinets are installed in parallel along a third direction. It also prevents upstream hot airflow from interfering with the air inlets of downstream cabinets when multiple electrical cabinets are spaced apart along the first direction. The first exhaust port of the first air guide plate is at least partially located below the exhaust port, allowing rainwater that cannot be discharged in time when there is excessive water accumulation in the drainage chamber to be discharged through this first exhaust port, thus preventing water accumulation and improving protection.

[0029] Technical solution eleven has the technical advantages of any one of technical solutions one through ten.

[0030] Technical solution twelve has the technical advantages of technical solution eleven. In addition, it ensures that when each electrical cabinet is adjacent to another electrical cabinet in a horizontal third direction perpendicular to the first direction, the hot airflow will not interfere with each other and cause a short circuit in the hot airflow.

[0031] Technical solution thirteen has the technical advantages of technical solution twelfth. In addition, when each parallel component is arranged along the first direction, the hot airflow from the upstream is less likely to interfere with the air inlet of the downstream cabinet, thereby reducing the footprint and ensuring heat dissipation efficiency. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments are briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of a parallel assembly according to an embodiment of the present invention, in which the air guide structure of one of the cabinets is hidden;

[0034] Figure 2 for Figure 1 Rear view;

[0035] Figure 3 for Figure 2 Sectional view along the AA direction;

[0036] Figure 4 This is a schematic diagram of the air guide structure according to an embodiment of the present invention;

[0037] Figure 5 In the first embodiment of the air guide structure of the present invention, Figure 4 A front view in the AA direction;

[0038] Figure 6 In the second embodiment of the air guide structure of the present invention, Figure 4 A front view in the AA direction;

[0039] Figure 7 This is the third embodiment of the air guide structure of the present invention. Figure 4 A front view in the AA direction;

[0040] Figure 8 This is the fourth embodiment of the air guide structure of the present invention. Figure 4 A front view in the AA direction;

[0041] Figure 9 This is a schematic diagram of the air guide structure of the present invention in a fourth embodiment where one of the second air guide side plates is hidden;

[0042] Figure 10 This is the fifth embodiment of the air guide structure in the present invention. Figure 4 A front view in the AA direction;

[0043] Figure 11 This is a schematic diagram showing the air guide structure of the present invention with one of the second air guide side plates hidden in the fifth embodiment;

[0044] Figure 12 This is a perspective view of the air guide structure in the fifth embodiment of the present invention;

[0045] Figure 13 This is a schematic diagram of the air guide shroud body in the fifth embodiment of the present invention.

[0046] Figure 14 This is a schematic diagram of the water-blocking part of the air guide shroud in the fifth embodiment of the air guide structure of the present invention.

[0047] Explanation of key figure labels:

[0048] Electrical cabinet 10; air outlet 11; air inlet 12;

[0049] 20. Wind guide hood; 21. Wind baffle; 211. First wind guide plate; 22. First exhaust port; 221. First wind guide side plate; 222. Second wind guide side plate; 223. Second wind guide plate; 23. Second exhaust port; 231. Water guide plate; 24. First water passage hole; 242. Second water passage hole; 25. Top plate; 26. First mounting part; 261. Third water passage hole; 27. Second mounting part; Body; 28. Mounting plate; 281. Water blocking part; 29. ​​Water blocking plate; 291. Ventilation port; 291. Water diversion plate; 292. Connecting plate; 30. First protective cotton; 40. Second protective cotton; 01. Upper air passage cavity; 011. Air outlet cavity; 012. Waterproof cavity; 013. Water blocking cavity; 02. Lower drainage cavity. Detailed Implementation

[0050] 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 preferred embodiments of the present invention and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0051] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and accompanying drawings of this invention is for distinguishing different objects and not for describing a specific order.

[0052] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this invention, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific scope of protection of this invention.

[0053] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this invention should be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection by other means or components.

[0054] In the claims, description and accompanying drawings of this invention, the terms "comprising," "having," and variations thereof are used to mean "including but not limited to."

[0055] See Figure 1-3 , Figure 1-3 A parallel assembly is shown, comprising at least two cabinets connected in a third direction along a horizontal plane, each cabinet including an electrical cabinet 10 and an air guide structure. Figure 2 The center represents the left and right directions.

[0056] The electrical cabinet 10 is roughly rectangular in shape, with two opposing side panels arranged along a first direction. Air outlets 11 are symmetrically arranged on the two side panels, and at least one side panel has an air inlet 12 located below the air outlet 11. Air guiding structures are installed at the air outlets 11, and waterproof louvers are provided at the air inlets 12. The number of air guiding structures is the same as the number of air outlets 11.

[0057] See Figure 4-5The air guiding structure includes an air guide hood 20. The air guide hood 20 is used to cover the air outlet 11 and form an air guiding cavity communicating with the air outlet 11. Its bottom is provided with several air passages 211. One end of each air passage 211 is connected to the air guiding cavity, and the other end is adapted to exhaust air in a direction away from the air inlet 12. At least a portion of the air passages 211 are adapted to drain accumulated water from the air guiding cavity. The air passages 211 exhaust air in a direction away from the air inlet 12, meaning that the hot air exhausted from the air passages 211 will not enter the air inlet 12 under conditions without external interference. The direction away from the air inlet 12 can be horizontal or upward (including vertical upward and inclined upward), as long as the hot air exhausted from the air passages 211 does not enter the air inlet 12.

[0058] It can be seen that the hot air discharged from the air outlet 11 can be discharged through the air passage 211. Due to the low density of the hot air, the hot air discharged from the air passage 211 flows upward and does not enter the air inlet 12 downward, thus avoiding short-circuiting of the hot air and ensuring the heat dissipation efficiency of the electrical cabinet 10. At least part of the air passage 211 is suitable for draining water accumulated in the air guide cavity. Therefore, when there is water in the air guide cavity, this part of the passage can drain the water in the air guide cavity in time. When there is no water in the air guide cavity, it can serve as the air passage 211 to discharge the hot air from the air guide cavity, thereby preventing rainwater from entering the electrical cabinet 10 through the air outlet 11 and ensuring the protection of the electrical cabinet 10. When the air outlet 11 is located directly above the air inlet 12, the air guide cover 20 can also serve as a water-blocking structure for the air inlet 12, thereby preventing rainwater from entering the electrical cabinet 10 from the air inlet 12.

[0059] In this embodiment, the output end of the air passage 211 is moved away from the air outlet 11 in the first direction so that the hot air or water discharged by the air passage 211 is further away from the air inlet 12, thereby avoiding the intake of rainwater or hot air at the air inlet 12.

[0060] See Figure 5 The bottom of the air guide hood 20 is provided with a wind baffle 21 extending in the horizontal direction, and each air passage 211 is formed at the bottom end of the wind baffle 21 and is adapted to exhaust air in the horizontal direction. Figure 5 In the middle, the wind deflector 21 includes a base plate and an L-shaped flap. The base plate has several air passage holes, which are arranged in a rectangular array on the side of the base plate away from the air outlet 11. Figure 5 (Right side of the middle) The flap includes an integrally connected horizontal section and a vertical section. The vertical section is connected to the lower surface of the base plate at the air passage hole, and the horizontal section forms an air passage gap with the lower surface of the base plate. In this way, the flap and the base plate cooperate to form an air passage channel 211.

[0061] Since the bottom of the air guide hood 20 is provided with a baffle plate 21 extending in the horizontal direction, the baffle plate 21 is located at the lowest position of the air guide hood 20, ensuring that the water in the air guide cavity falls on the horizontal baffle plate 21. The baffle plate 21 is also a water guiding structure, so that the water in the air guide cavity can flow smoothly through the baffle plate 21 to the air passage 211 for timely discharge. On this basis, the air passage 211 is suitable for exhausting air in the horizontal direction, so each air passage 211 is suitable for draining the water in the air guide cavity, so that the water in the air guide cavity can be discharged in time. Each air passage 211 is formed at the bottom end of the baffle plate 21, which is also easy to manufacture and process.

[0062] Although the structure of the above-mentioned air guide hood 20 can avoid short-circuiting of hot air and water accumulation to a certain extent, it still has the problem of low ventilation efficiency. The following will introduce an embodiment in which an exhaust channel is set on the side of the air guide hood 20 to increase the air outlet efficiency.

[0063] See also Figure 5 The side of the air guide hood 20 has several exhaust channels, one end of which is connected to the air guide cavity, and the other end is provided with a direction suitable for exhausting air away from the air inlet 12. Similarly, the hot air discharged from the exhaust channel can be discharged horizontally or upward, as long as it enters the air inlet under the condition that there are no external factors interfering.

[0064] Specifically, the side of the air guide shroud 20 is provided with a first air guide plate 22 extending vertically. The first air guide plate 22 has several upward-exhausting first air outlets 221, which form an exhaust channel. The upward exhaust of the first air outlets 221 on the first air guide plate 22 means that there is a channel for changing direction at the first air outlets 221. This channel can be either a wind guide or an inclined air guide channel formed by the thickness of the first air guide plate 22 itself. The vertical extension of the first air guide plate 22 makes it easy to manufacture. The upward exhaust of the first air outlets 221 ensures that even if there is external interference, the hot air exhausted from the first air outlets 221 is not likely to enter the air inlet 12 downwards, further preventing short-circuiting of the hot airflow.

[0065] As described above, although the first exhaust vent 221 can exhaust air upwards, the air outlet rate of the entire air guide cavity will still be affected to some extent due to the need to set up an air guide channel. On this basis, the present invention preferably also provides a second air guide plate 23 on the side of the air guide hood 20 that is inclined relative to both the first direction and the vertical direction. The air guide hood 20 is approximately a right trapezoid in shape. The second air guide plate 23 is provided with a plurality of upward exhaust vents 231, and the second exhaust vents 231 form an exhaust channel.

[0066] The second air guide plate 23 ensures that most of the hot air discharged from the air outlet 11 of the electrical cabinet 10 is discharged upwards through the first exhaust port 221 and the second exhaust port 231 after passing through the air guide cavity. Similarly, even with external interference, the hot air discharged from the second exhaust port 231 is less likely to enter the air inlet 12 downwards, further preventing short-circuiting of the hot airflow. Due to the inclined design of the second air guide plate 23, when the second air guide plate 23 is configured to discharge upwards through the second exhaust port 231, there is no need to set up an air guide channel like the vertically extending first air guide plate 22. Instead, ventilation holes can be directly opened. Therefore, the ventilation rate of the second air guide plate 23 is higher than that of the first air guide plate 22, and the inclined structure is more aesthetically pleasing and easier to identify.

[0067] In this embodiment, the first air guide plate 22 includes a first air guide side plate 222 perpendicular to the first direction and two second air guide side plates 223 arranged parallel to each other and opposite to each other along a third direction perpendicular to the first direction. The second air guide plates 23 are connected to the upper end of the first air guide side plate 222 and the side ends of the two second air guide side plates 223, so the first air guide side plate 222 and the second air guide side plate 223 both extend in the vertical direction; the top of the air guide cover 20 is a horizontal top plate 25. In this embodiment, the second air guide plate 23 is inclined outward from top to bottom relative to the side plate of the electrical cabinet 10.

[0068] The first exhaust port 221 of the first air guide side plate 222 is at least partially located below the air outlet 11. Figure 5 In the middle, the first exhaust port 221 at the bottom of the first air guide side plate 222 is located below the air outlet 11, see... Figure 4-5 The coverage of the first exhaust vent 221 on the first air guide side plate 222 is at least 85%, the first exhaust vent 221 on the second air guide side plate 223 is located in its lower part, and the coverage of the second exhaust vent 231 on the second air guide plate 23 is at least 85%. The first exhaust vents 221 on the first air guide plate 22 are arranged in a rectangular array, and the second exhaust vents 231 on the second air guide plate 23 are also arranged in a rectangular array. The airflow at the first exhaust port 221 of the vertically extending first air guide side plate 222 and second air guide side plate 223 can be discharged upwards. This can be achieved by setting an air guide part at the first exhaust port 221 or by using the thickness of the first air guide side plate 222 and second air guide side plate 223 to form an inclined air guide channel. In this embodiment, the first air guide side plate 222 includes a side plate body and a guide plate. Several air ports are opened on the side plate body. The guide plate is connected to the outer surface of the side plate body and cooperates with the outer surface of the side plate body to form an air guide channel. This air guide channel can discharge air upwards to form the first exhaust port 221. The structure of the second air guide side plate 223 is similar to that of the first air guide side plate 222, and will not be described in detail here.

[0069] In this embodiment, the arrangement of the first exhaust vent 221 and the second exhaust vent 231 allows rainwater to enter the air guide cavity through them. The rainwater entering the air guide cavity can then be discharged horizontally via the air passage 211, thus ensuring the protection of the electrical cabinet 10. Furthermore, since the second air guide plate 23 is inclined relative to both the first direction and the vertical direction, it can also change the direction of rainwater movement, thereby reducing the amount of rainwater entering the air guide cavity and slowing down the rainwater flow, further preventing water accumulation in the air guide cavity and ensuring the protection of the electrical cabinet 10. The first exhaust vent 221 of the first air guide side plate 222 is at least partially located below the air outlet 11, allowing rainwater that cannot be discharged in time when there is excessive water accumulation in the drainage cavity to be discharged through the first exhaust vent 221, thus preventing water accumulation and improving protection.

[0070] The exhaust channels of the first air guide plate 22 and the second air guide plate 23 allow the hot air in the air guide cavity to be discharged through multiple channels, improving the air outlet efficiency of the air guide hood 20. The hot air is more easily discharged from the side of the air guide cavity, that is, from the first exhaust port 221 and the second exhaust port 231. Therefore, most of the hot air discharged from the air outlet 11 of the electrical cabinet 10 is discharged upward through the first exhaust port 221 and the second exhaust port 231 after passing through the air guide cavity, and a small part of the hot air is discharged horizontally through the air passage 211, which ensures the air outlet efficiency and avoids the hot air discharged from the air passage 211 from entering the air inlet 12 to the greatest extent, thus avoiding short circuit of the hot air.

[0071] Furthermore, the structural arrangement of the first air guide plate 22 and the second air guide plate 23 makes the second exhaust port 231 located above each of the first exhaust ports 221, and the first air guide side plate 222 is opposite to the air outlet 11. Due to the upward flow of hot air, most of the hot air is discharged through the second exhaust port 231 of the second air guide plate 23, then through the first exhaust port 221 of the first air guide side plate 222, then through the first exhaust port 221 of the second air guide side plate 223, and finally through the air passage 211 at the bottom. This arrangement not only makes the air guide hood 20 have high ventilation efficiency, but also makes it less likely for the hot air to interfere with each other when the electrical cabinets 10 are connected in parallel along the third direction. It also makes it less likely for the upstream hot air to interfere with the air inlet 12 of the downstream cabinet when multiple electrical cabinets 10 are arranged at intervals along the first direction.

[0072] See Figure 6The wind deflector 20 is also equipped with a water guide plate 24 that is inclined relative to both the first direction and the vertical direction. The water guide plate 24 has water passage holes and divides the wind deflector 20 into an upper air passage chamber 01 corresponding to the air outlet 11 and a lower drainage chamber 02 corresponding to the air passage channel 211. The inclined setting of the water guide plate 24 can basically change the movement direction of rainwater, making it flow downwards, which is conducive to the rainwater flowing quickly to the baffle plate 291 and being discharged through the air passage channel 211.

[0073] The above describes the air guiding effect of the air guide cover 20 on the air outlet 11. Although the air guide cover 20 has a certain degree of protection, when the amount of rainwater is large, it may still enter the electrical cabinet 10 through the air outlet 11. The following further optimizes the protection of the air guiding structure by setting the first protective cotton 30.

[0074] Specifically, see Figure 7 The top plate 25 and the water guide plate 24 of the water guide cover are provided with first mounting parts 26 facing each other for mounting the first protective cotton 30. The first mounting parts 26 extend vertically and are close to the free ends of the top plate 25 and the water guide plate 24. Figure 7 (At the right end), the first mounting part 26 can be either a plate extending in the vertical direction or a groove with opposite openings.

[0075] The first protective cotton 30 is installed at the air outlet 11. The first protective cotton 30 extends vertically and is installed on the first mounting part 26. The first protective cotton 30 is located in the upper air passage cavity 01.

[0076] The first protective cotton 30 prevents rainwater and dust from entering the electrical cabinet 10 through the air outlet 11, further ensuring the protection of the electrical cabinet.

[0077] Although the first protective cotton 30 can prevent rainwater from entering the electrical cabinet 10 to a certain extent, when the amount of rainwater increases, the moisture content of the first protective cotton 30 may approach saturation, thus causing the protection to fail. The following further optimizes the protection of the air guide structure by setting a second protective cotton 40.

[0078] Specifically, see Figure 8-9 The top plate 25 and the water guide plate 24 of the water guide cover are provided with second mounting parts 27 for the installation of the second protective cotton 40. The second mounting parts 27 both extend in the vertical direction. The first mounting part 26 and the second mounting part 27 can be plates extending in the vertical direction or grooves with opposite openings.

[0079] The second protective cotton 40 is disposed between the second air guide plate 23 and the first protective cotton 30 along the first direction and extends vertically to prevent rainwater from entering the first protective cotton 30. The second protective cotton 40 extends vertically and is installed on the second mounting part 27. The second protective cotton 40 is located in the upper air passage cavity 01, and the second protective cotton 40 divides the upper air passage cavity 01 along the first direction into an air outlet cavity 011 away from the air outlet 11. Figure 8 (left side) and waterproof cavity 012 near air outlet 11 Figure 8 (Right side of the middle); see also Figure 9 The water guide plate 24 has a first water passage hole 241 corresponding to the air outlet cavity 011 and a second water passage hole 242 corresponding to the waterproof cavity 012. The first water passage hole 241 has a coverage rate of at least 70% on the bottom wall of the air outlet cavity 011, and the second water passage hole 242 has a coverage rate of at least 70% on the bottom wall of the waterproof cavity 012. Furthermore, the length of the air outlet cavity 011 along the first direction is at least twice the length of the waterproof cavity 012 along the first direction. In this embodiment, both the first water passage hole 241 and the second water passage hole 242 are arranged in a rectangular array on the water guide plate 24.

[0080] In this embodiment, the second air guide plate 23 is perpendicular to the second direction, and the projection of the second air guide plate 23 along the second direction onto the second protective cotton 40 is located in the middle of the second protective cotton 40.

[0081] The arrangement of the first protective cotton 30 and the second protective cotton 40 forms a double protection to prevent rainwater and dust from entering the electrical cabinet 10 through the air outlet 11, thus ensuring the protective performance of the electrical cabinet 10. Specifically, after rainwater hits the first air guide plate 22, it flows downwards. A small portion of the rainwater that enters the air guide cavity through the first exhaust vent 221 is discharged through the air passage 211. After rainwater hits the second air guide plate 23, some of the rainwater changes its direction of movement and flows outside the air guide cover 20, while some rainwater enters the air guide cavity through the second exhaust vent 231 and undergoes a first deceleration. Since the projection of the second air guide plate 23 along the second direction on the second protective cotton 40 is located at... The middle section of the second protective cotton 40 not only ensures minimal water seepage in certain areas, maintaining its absorbency for rainwater, but also causes rainwater to primarily fall within this section. Consequently, the rainwater's speed is significantly reduced after passing through the second protective cotton 40, undergoing a second deceleration. Most of the rainwater is absorbed by the second protective cotton 40 and flows downwards until it enters the water passage. Furthermore, because the rainwater primarily falls in the middle section of the second protective cotton 40, even if a small portion passes through it, it will continue to move downwards and fall into the wind passage 211 of the windbreak 21. Meanwhile, the first protective cotton 30... This still forms a final line of defense, isolating rainwater from the electrical cabinet 10, thus ensuring the electrical cabinet 10's protective properties, especially its waterproofness. When rainwater enters the air outlet chamber 011, it is decelerated twice by the second protective cotton 40 and flows downwards along the second protective cotton 40. Some rainwater falls directly into the drainage chamber through the first water passage 241 near the second protective cotton 40, while some rainwater flows downwards along the slope of the water guide plate 24 to the remaining first water passages 241 away from the second protective cotton 40 and falls into the drainage chamber. The inclined design of the water guide plate 24 can essentially change the direction of rainwater movement, causing it to flow downwards at an angle. The first water passage 241 further changes the direction of rainwater movement, causing it to fall downwards into the drainage chamber. Since the first water passage 241 has a coverage rate of at least 70% on the bottom wall of the air outlet chamber 011, rainwater in the air outlet chamber 011 can fall into the drainage chamber at multiple points simultaneously, ensuring timely discharge of rainwater. On this basis, the length of the air outlet chamber 011 along the first direction is at least twice the length of the waterproof chamber 012 along the first direction. On the one hand, this is conducive to setting a larger air outlet rate in the air outlet chamber 011. On the other hand, it also allows the second protective cotton 40 and the water guide plate 24 to work together well to change the direction of rainwater, thereby preventing rainwater from entering the protective chamber.Similarly, when rainwater enters the waterproof cavity 012, the rainwater passing through the second protective cotton 40 will hit the water guide plate 24. The bottom wall of the protective cavity is located at the high position of the water guide plate 24, so the rainwater on the bottom wall of the protective cavity can more easily slide down the water guide plate 24 and fall into the drainage cavity at multiple points through the second water passage hole 242, ensuring that the rainwater is discharged in time. That is, the inclined setting of the water guide plate 24 makes it easier for rainwater to flow downward, thus moving away from the air outlet 11 and away from the first protective cotton 30, preventing rainwater from entering the electrical cabinet 10. In addition, the first protective cotton 30 and the second protective cotton 40 are both located in the air passage cavity, making it easier for the first protective cotton 30 and the second protective cotton 40 to dry naturally under the condition of no rain, thereby realizing recycling.

[0082] Therefore, rainwater encounters multiple obstacles as it travels from the wind deflector 20 to the air outlet 11, resulting in multiple reductions in rainwater velocity and multiple layers of protection, effectively ensuring the protective performance of the electrical cabinet 10. The ventilation rates of the first protective cotton 30 and the second protective cotton 40 are consistent, ensuring protection while avoiding any impact on the airflow efficiency.

[0083] In extreme cases, rainwater may also enter the electrical cabinet 10 through the first protective cotton 30. Based on this, the following improvements have been made to the structure of the air guide shroud 20.

[0084] See Figure 10-14 The air guide cover 20 is also provided with a water-blocking part 29 on the side near the air outlet 11. The water-blocking part 29 is adapted to cooperate with the first protective cotton 30 to form a water-blocking cavity 013. The water-blocking part 29 is adapted to extend into the electrical cabinet 10 through the air outlet 11 and is provided with a water-blocking plate 291 extending vertically and opposite to the first protective cotton 30. The upper middle part of the water-blocking plate 291 is provided with a ventilation opening 2911 opposite to the air outlet 11 and the air passage area of ​​the ventilation opening 2911 is at least 80% of the air passage area of ​​the air outlet 11. The water-blocking part 29 is also provided with a water-guiding plate 292 that is inclined relative to both the vertical direction and the first direction at the bottom of the water-blocking cavity 013. The first mounting part 26 is provided with a third water passage hole 261.

[0085] In this embodiment, the air guide hood 20 includes a body 28 and a water-blocking part 29. The body 28 has a near-right-angled trapezoidal structure. The first air guide plate 22, the second air guide plate 23, and the water guide plate 24 are all formed inside the body 28. Correspondingly, the first protective cotton 30 and the second protective cotton 40 are both located inside the body 28. The body 28 has a mounting plate 281 extending vertically near the first mounting part 26. The water-blocking part 29 is a cylindrical structure with an opening facing the first protective cotton 30. The water-blocking part 29 also has a connecting plate 293 extending vertically at the edge of the opening of the cylindrical structure. By locking the connecting plate 293 to the mounting plate 281, the body 28 and the water-blocking part 29 can be connected. The water-guiding plate 292 and the water guide plate 24 are connected, and the inclination angle of the water-guiding plate 292 relative to the water guide plate 24 is basically the same or greater. In practical applications, it can also be locked to the side plate of the electrical cabinet 10 by the connecting plate 293.

[0086] As can be seen from the above analysis, even if rainwater hits the first protective cotton 30, it will only hit the bottom of the first protective cotton 30. Therefore, the rainwater that passes through the first protective cotton 30 and enters the water-blocking cavity 013 will only hit the lower part of the water-blocking plate 291, so that the upper middle part of the water-blocking plate 291 can form an exhaust port opposite to the air outlet 11, which is conducive to the discharge of hot air. Even if rainwater falls into the water-blocking cavity 013, the rainwater in the water-blocking cavity 013 can still be discharged through the third water passage hole 261 of the first mounting part 26 under the action of the water guide plate 292. The water-resistant cavity 012 allows rainwater to be discharged through the air passage 211. Therefore, the water-blocking cavity 013 ensures that rainwater undergoes a deceleration process before entering the electrical cabinet 10. Thus, rainwater entering the electrical cabinet 10 undergoes at least four deceleration processes: the second air guide plate 23, the first protective cotton 30, the third protective cotton, and the water-blocking plate 291. This achieves multiple deceleration and multiple protections, with the water-blocking cavity 013 forming the final line of defense to keep rainwater out. Therefore, the above design maximizes airflow while improving protection. Furthermore, the first protective cotton 30 can be directly mounted on the air guide cover 20 via the first mounting part 26. Therefore, installation only requires attaching the air guide cover 20 to the electrical cabinet 10, making disassembly and assembly more convenient and facilitating replacement and maintenance.

[0087] It should be understood that in other embodiments, if no exhaust channel is provided on the side and / or top of the air guide hood 20, then the air guide hood 20 does not need to be provided with a water guide plate 24, and the air guide structure does not need to be provided with a first protective cotton 30 and a second protective cotton 40.

[0088] The parallel assembly in this embodiment ensures that when each electrical cabinet 10 is horizontally adjacent to another electrical cabinet in a third direction, the hot airflow will not interfere with each other and cause a short circuit in the hot airflow.

[0089] Accordingly, the present invention also provides an electrical system comprising a plurality of parallel-connected components arranged at intervals along a first direction as described above. When each parallel-connected component is arranged along the first direction, the upstream hot airflow is less likely to interfere with the air inlet of the downstream cabinet, thereby reducing the floor space and ensuring heat dissipation efficiency.

[0090] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this invention, but does not constitute a limitation on the scope of protection of this invention. Modifications, equivalent substitutions, or other improvements to the embodiments of this invention or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this invention or the foregoing embodiments, in conjunction with common knowledge, general technical knowledge, and / or existing technology, should all be included within the scope of protection of this invention.

Claims

1. An air guiding structure for an electrical cabinet (10), the electrical cabinet (10) being rectangular in shape, wherein the electrical cabinet (10) is provided with an air outlet (11) and an air inlet (12) sequentially from top to bottom, characterized in that, The air guiding structure includes an air guide hood (20); the air guide hood (20) is used to cover the air outlet (11) and form an air guiding cavity communicating with the air outlet (11), and its bottom is provided with a plurality of air passages (211); one end of each air passage (211) is connected to the air guiding cavity, and the other end is adapted to exhaust air in a direction away from the air inlet (12) to avoid hot air entering the air inlet (12), and at least part of the air passages (211) is adapted to drain the water accumulated in the air guiding cavity.

2. The air guiding structure as described in claim 1, characterized in that, The bottom of the air guide hood (20) is provided with a wind baffle (21) extending in the horizontal direction, and each air passage (211) is formed at the bottom end of the wind baffle (21) and is adapted to exhaust air in the horizontal direction.

3. The air guiding structure as described in claim 2, characterized in that, The side of the air guide hood (20) has several exhaust channels, one end of each exhaust channel is connected to the air guide cavity, and the other end is provided to exhaust air in a direction away from the air inlet (12); the output end of the air passage (211) is away from the air outlet (11) in a first direction.

4. The air guiding structure as described in claim 3, characterized in that, The side of the air guide hood (20) is provided with a first air guide plate (22) extending in a vertical direction. The first air guide plate (22) is provided with a plurality of first exhaust ports (221) that exhaust air upwards, and the first exhaust ports (221) form an exhaust channel.

5. The air guiding structure as described in claim 4, characterized in that, The air inlet (12) and air outlet (11) are both opened along the first direction; the side of the air guide hood (20) is also provided with a second air guide plate (23) that is inclined relative to both the first direction and the vertical direction. The second air guide plate (23) is provided with a plurality of upward exhaust vents (231), and the second exhaust vents (231) form an exhaust channel.

6. The air guiding structure as described in claim 5, characterized in that, It also includes a first protective cotton (30), which is used to install at the air outlet (11).

7. The air guiding structure as described in claim 6, characterized in that, It also includes a second protective cotton (40), which is disposed between the second air guide plate (23) and the first protective cotton (30) along the first direction and extends vertically to block rainwater from entering the first protective cotton (30); the second air guide plate (23) is perpendicular to the second direction, and the projection of the second air guide plate (23) along the second direction on the second protective cotton (40) is located in the middle of the second protective cotton (40).

8. The air guiding structure as described in claim 7, characterized in that, The air guide hood (20) is also provided with a water guide plate (24) that is inclined relative to both the first direction and the vertical direction. The water guide plate (24) divides the air guide hood (20) into an upper air passage chamber (01) corresponding to the air outlet (11) and a lower drainage chamber (02) corresponding to the air passage channel (211). The first protective cotton (30) and the second protective cotton (40) are both located in the upper air passage chamber (01) and have the same ventilation rate. The second protective cotton (40) divides the upper air passage chamber (01) along the first direction into an air outlet chamber (011) away from the air outlet (11). The air outlet (11) and a waterproof cavity (012) near the air outlet (11) are provided with a first water passage hole (241) corresponding to the air outlet cavity (011) and a second water passage hole (242) corresponding to the waterproof cavity (012). The first water passage hole (241) has a coverage rate of at least 70% on the bottom wall of the air outlet cavity (011), and the second water passage hole (242) has a coverage rate of at least 70% on the bottom wall of the waterproof cavity (012). The length of the air outlet cavity (011) along the first direction is at least twice the length of the waterproof cavity (012) along the first direction.

9. The air guiding structure as described in claim 8, characterized in that, The air guide cover (20) is provided with a water-blocking part (29) on the side near the air outlet (11). The water-blocking part (29) is adapted to cooperate with the first protective cotton (30) to form a water-blocking cavity (013). The water-blocking part (29) is adapted to extend into the electrical cabinet (10) through the air outlet (11) and is provided with a water-blocking plate (291) extending vertically and opposite to the first protective cotton (30). The upper middle part of the water-blocking plate (291) is provided with a ventilation opening (2911) opposite to the air outlet (11). The air passage area of ​​11) is at least 80% of the air passage area of ​​the air outlet (11); the water baffle (29) is also provided with a water guide plate (292) that is inclined relative to both the vertical direction and the first direction at the bottom of the water baffle cavity (013); the water guide plate (24) is provided with a first mounting part (26) extending in the vertical direction corresponding to the first protective cotton (30), the first protective cotton (30) extends in the vertical direction and is mounted on the first mounting part (26), and the first mounting part (26) is provided with a third water passage hole (261).

10. A wind-guiding structure as described in claim 8 or 9, characterized in that, The first air guide plate (22) includes a first air guide side plate (222) perpendicular to the first direction and two second air guide side plates (223) arranged parallel to each other and opposite to each other along a third direction perpendicular to the first direction. The second air guide plate (23) is connected to the upper end of the first air guide side plate (222) and the side ends of the two second air guide side plates (223). The first exhaust port (221) of the first air guide side plate (222) is at least partially located below the air outlet (11), and the coverage of the first exhaust port (221) of the first air guide side plate (222) is at least 85%. The first exhaust port (221) on the second air guide side plate (223) is located in its lower part, and the coverage of the second exhaust port (231) on the second air guide plate (23) is at least 85%.

11. A server rack, characterized in that, The device includes an electrical cabinet (10) and a wind-guiding structure as described in any one of claims 1-10. The electrical cabinet (10) is rectangular. The electrical cabinet (10) is provided with an air outlet (11) and an air inlet (12) from top to bottom. The wind-guiding structure is installed at the air outlet (11) and communicates with the air outlet (11) to form a wind-guiding cavity.

12. A parallel operation component, characterized in that, The equipment includes at least two cabinets as described in claim 11, wherein the air inlets (12) and air outlets (11) of the electrical cabinets (10) are opened along a first horizontal direction, and each electrical cabinet (10) is adjacent to the other along a third horizontal direction perpendicular to the first direction.

13. An electrical system characterized in that, It includes several parallel assembly units arranged at intervals along a first direction, as described in claim 12. The electrical cabinet (10) is provided with two parallel and opposite side plates along the first direction. Air outlets (11) are symmetrically provided on the two side plates, wherein at least one side plate is provided with an air inlet (12) located below the air outlet (11).

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