Directional heat dissipation power distribution cabinet with adjustable air deflector

Abstract

The invention discloses a directional heat dissipation power distribution cabinet with adjustable air deflectors, which relates to the technical field of equipment for power distribution cabinets and comprises a cabinet body and a heat dissipation unit arranged in the cabinet body. The heat dissipation unit comprises a directional heat dissipation assembly used for carrying out fixed-point jet cooling on key heating elements, an air guide assembly used for optimizing overall airflow organization in the cabinet, and a water cooling assembly used for carrying out pre-cooling on cooling airflow of the directional heat dissipation assembly. The directional heat dissipation assembly comprises a fan at least arranged on the top wall in the cabinet body, an air supply pipe communicated with an outlet of the fan, and an annular air pipe arranged in the power distribution cabinet and communicated with the air supply pipe. Through cooperation of the directional heat dissipation assembly and the water cooling assembly, air blown out of the air blowing pipe at the tail end of the telescopic air column is no longer ambient temperature air but low-temperature cold air cooled in advance through the liquid cooling system. According to the pre-cooling type directional air supply mechanism, the heat dissipation efficiency and the limit capacity of air cooling are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of equipment technology for power distribution cabinets, specifically to a directional heat dissipation power distribution cabinet with an adjustable air guide plate. Background Technology

[0002] In modern industry and data center sectors, power distribution cabinets, as core units for power distribution and control, have increasingly higher power densities in their integrated components such as frequency converters, servo drives, and high-power switching power supplies. The large amount of heat generated during operation leads to a harsh temperature environment inside the cabinet. High temperatures can directly cause component performance degradation, shortened lifespan, and the risk of malfunctions, threatening the stability and safety of the entire power system.

[0003] For example, a high-efficiency heat dissipation and energy-saving low-voltage distribution cabinet, as disclosed in Chinese Patent Publication No. "CN218242741U", includes a cabinet body with a door rotatably connected by hinges. A set of heat dissipation vents is provided on both side walls of the cabinet body. Two heat-conducting plates are symmetrically and fixedly connected inside the cabinet. An air inlet communicating with the heat-conducting plates is provided at the top of the right side wall of the cabinet, and an air inlet pipe is matched inside the air inlet. A first bracket is fixedly connected inside the air inlet pipe. This utility model, through the first and second fan blades, can simultaneously supply and exhaust air to the low-voltage distribution cabinet, accelerating the exchange of air between the low-voltage distribution cabinet and the outside environment. It can efficiently dissipate heat from the low-voltage distribution cabinet, preventing heat accumulation inside, reducing the aging rate of internal components, and improving service life. Through temperature sensors and a central controller, the first and second motors can be intelligently controlled to shut down when cooling is not required, making it more energy-efficient and environmentally friendly.

[0004] For example, a heat dissipation distribution cabinet, as disclosed in Chinese Patent Publication No. "CN222637984U", belongs to the field of distribution cabinet technology. It includes a cabinet body, an air intake box installed on one side of the cabinet body, an exhaust box installed on the other side of the cabinet body, a cabinet door that rotates on the front of the cabinet body, a filter mechanism installed inside the air intake box, and multiple first fans installed through the top of the air intake box. This utility model, through the arrangement of the air intake box, exhaust box, first fans, second fans, air inlet, and exhaust outlet, allows air to be supplied to the interior of the cabinet through the first fans and air inlet during use. Simultaneously, the second fans and exhaust outlet can extract hot air from inside the cabinet, creating air circulation within the cabinet and completing the heat dissipation of the internal components. During use, the filter mechanism can also filter the air blown in by the first fans, preventing dust from entering the interior of the cabinet.

[0005] The aforementioned patents and existing power distribution cabinets rely solely on simple fan blades for heat dissipation. This fan-driven cooling only creates widespread turbulence within the cabinet. Due to the lack of airflow directionality, a significant amount of cooling air is wasted on air circulation in non-critical areas, failing to provide effective targeted cooling. Therefore, this invention proposes a power distribution cabinet with adjustable air guide plates for directional heat dissipation. Summary of the Invention

[0006] The purpose of this invention is to provide a directional heat dissipation distribution cabinet with an adjustable air guide plate, in order to solve the problem mentioned in the background art that existing distribution cabinets only use simple fan blades for heat dissipation. The fan heat dissipation only creates a large-scale turbulence inside the cabinet. Due to the lack of airflow directionality, a large amount of cooling air is consumed in the air circulation of non-critical areas, and it cannot provide effective targeted cooling.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A directional heat dissipation power distribution cabinet with an adjustable air guide plate includes a cabinet body and a heat dissipation unit disposed therein. The heat dissipation unit includes a directional heat dissipation component for targeted jet cooling of key heat-generating components, an air guide component for optimizing the overall airflow organization inside the cabinet, and a water-cooling component for pre-cooling the cooling airflow of the directional heat dissipation component. The directional heat dissipation component includes at least a fan installed on the top wall of the cabinet, an air supply pipe connected to the fan outlet, and an annular air duct installed inside the distribution cabinet and connected to the air supply pipe. Multiple downward air guide pipes are evenly distributed on the annular air duct, and each air guide pipe is connected to an adjustable telescopic air column at its end. Multiple air blowing pipes are installed at different heights on the telescopic air column.

[0008] Optionally, the telescopic air column is a telescopic sleeve structure, comprising at least two relatively sliding tube sections, and is fixed by a locking device.

[0009] Optionally, the water-cooling assembly includes a water-cooling box, a liquid pump, and a liquid-cooling cover located on the rear side of the cabinet. The input end of the liquid pump is connected to the water-cooling box. An annular liquid path is formed inside the liquid-cooling cover. The annular air duct is embedded in the annular liquid path, so that the airflow flowing through the annular air duct exchanges heat with the coolant in the annular liquid path.

[0010] Optionally, the liquid cooling cover is connected to the water cooling tank and the liquid pump through a liquid inlet pipe and a liquid return pipe to form a closed coolant circulation loop.

[0011] Optionally, the air guiding assembly includes a fan blade fixing plate fixed to the inner side wall of the cabinet, and multiple air guiding plates arranged in a linear array along the vertical direction are rotatably connected between the two fan blade fixing plates. A fan plate drive motor is mounted on one side of the fan blade fixing plate through a motor fixing plate. A rotating rod is fixedly connected to the output end of the fan plate drive motor, and the end of the rotating rod is fixedly connected to the fan blade fixing plate on the same side. A connecting rod corresponding to the air guiding plate is fixedly sleeved on the rotating rod, and the end of each connecting rod away from the rotating rod is connected together through a connecting rod.

[0012] Optionally, vertical profile steel plates are provided at the four corners of the cabinet, and mounting plates for installing electrical components are provided on them, with several ventilation holes on the mounting plates.

[0013] Optionally, a cooling fan is provided at the bottom of the cabinet.

[0014] Optionally, the cabinet is equipped with a temperature detection module, which includes multiple temperature sensors evenly distributed above the mounting plate.

[0015] Optionally, a central controller is also included, which is electrically connected to the fan, the fan plate drive motor, the liquid pump, and the temperature sensor inside the cabinet, and is used to automatically control the coordinated operation of each component based on temperature information.

[0016] The beneficial effects of this invention are: Through the coordinated operation of the directional heat dissipation component and the water-cooling component, the annular liquid path of the water-cooling component tightly wraps around the annular air duct of the directional heat dissipation component. This allows the heat of the air driven by the fan and about to be delivered to the heat source to be efficiently exchanged and absorbed by the coolant within the annular liquid path as it flows through the annular air duct. Therefore, the air blown out from the blower at the end of the telescopic air column is no longer ambient temperature air, but rather low-temperature cold air pre-cooled by the liquid cooling system. This "pre-cooled directional air delivery" mechanism fundamentally improves the heat dissipation efficiency and ultimate capacity of forced air cooling, deeply integrating the advantages of traditional air cooling and liquid cooling. It can directly, accurately, and efficiently cool local high heat flux density components, solving the key bottlenecks of insufficient heat dissipation capacity and uncontrollable airflow temperature in traditional power distribution cabinets that rely solely on air cooling. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of a directional heat dissipation power distribution cabinet with an adjustable air guide plate according to the present invention. Figure 2 This is a schematic diagram of the structure of the present invention after the cabinet door has been removed; Figure 3 This is a structural schematic diagram of the present invention from another perspective after the cabinet door has been removed; Figure 4 This is a schematic diagram of the heat dissipation unit of the present invention; Figure 5 This is a schematic diagram of the directional heat dissipation component of the present invention; Figure 6 This is a schematic diagram of the structure of the water-cooling component of the present invention; Figure 7 This is a front view of the water-cooling assembly of the present invention; Figure 8 This is a schematic diagram of the air guide assembly of the present invention.

[0019] The numbers on the map are: 1. Cabinet; 2. Directional heat dissipation components; 201. Fan; 202. Air supply duct; 203. Circular air duct; 204. Air guide duct; 205. Telescopic air column; 206. Air blowing duct; 3. Air guide assembly; 301. Fan blade fixing plate; 302. Air guide plate; 303. Motor fixing plate; 304. Fan drive motor; 305. Rotating rod; 306. Connecting rod; 307. Connecting rod; 4. Water-cooled components; 401. Water-cooled box; 402. Liquid pump; 403. Infusion pipe; 404. Liquid cooling cover; 405. Circular liquid circuit; 406. Return pipe; 5. Profiled steel plate; 6. Mounting plate; 7. Cooling fan. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0021] Example 1: As attached Figure 1 To be continued Figure 8 As shown, the present invention provides a directional heat dissipation power distribution cabinet with an adjustable air guide plate, including a cabinet body 1 and a heat dissipation unit disposed therein. The heat dissipation unit includes a directional heat dissipation component 2 for targeted jet cooling of key heat-generating components, an air guide component 3 for optimizing the overall airflow organization inside the cabinet, and a water cooling component 4 for pre-cooling the cooling airflow of the directional heat dissipation component 2. The directional heat dissipation component 2 includes a fan 201 installed at least on the top wall of the cabinet 1, an air supply duct 202 connected to the outlet of the fan 201, and an annular air duct 203 installed inside the distribution cabinet and connected to the air supply duct 202. Multiple downward-discharging air guides 204 are evenly distributed on the annular air duct 203. Each air guide duct 204 is connected to an adjustable-length telescopic air column 205. Multiple air blowing pipes 206 are installed at different heights along the body of the telescopic air column 205. Specifically, the fan 201 acts as the air source, pumping external or cabinet-internal air into the air supply duct 202 and distributing it to the annular air duct 203. The airflow then enters the telescopic air column 205 through each air guide duct 204. The adjustable length of the telescopic air column 205 allows the user to lower or raise the entire air column and its air blowing pipes 206 according to the actual layout and height of the components inside the cabinet, bringing the air outlet as close as possible to the heat source and greatly reducing the loss of air pressure and cooling capacity during transit. Meanwhile, multiple air ducts 206 set at different heights in the tube body enable a single air column unit to cover multiple heating points in a vertical space.

[0022] In one embodiment of the present invention, the telescopic air column 205 is a telescopic sleeve structure, comprising at least two relatively sliding tube sections, which are fixed by a locking device. Specifically, the telescopic air column 205 adopts a sleeve design, and the length is adjusted by the relative sliding between the tube sections. When cooling is required for heating elements at different heights, the position of the tube sections is adjusted so that the air blower 206 is aligned with the target area. Finally, the position is fixed by the locking device. The airflow enters the telescopic air column 205 from the annular air duct 203 through the air guide pipe 204, and is then directionally ejected from the air blower 206 at different heights, forming precise cooling in the vertical direction.

[0023] It should be further explained that the locking device can be a combination of a spiral fastening ring with a handle or a spring pin and a positioning hole, which facilitates manual adjustment and fixation. For automation, it can also be replaced with a screw-slider mechanism driven by a small motor for electric extension and retraction. Rubber or silicone sealing rings should be installed between each section of the tube to ensure airtightness and prevent pressure leakage from causing insufficient airflow in the remote blowing pipe 206.

[0024] like Figure 4-7As shown, in one embodiment of the present invention, the water-cooling assembly 4 includes a water-cooling box 401, a liquid pump 402, and a liquid-cooling cover 404 disposed on the rear side of the cabinet 1. The input end of the liquid pump 402 is connected to the water-cooling box 401. An annular liquid passage 405 is formed inside the liquid-cooling cover 404, and an annular air duct 203 is embedded in the annular liquid passage 405, so that the airflow flowing through the annular air duct 203 exchanges heat with the coolant in the annular liquid passage 405. Specifically, the liquid pump 402 pumps out the low-temperature coolant in the water-cooling box 401 and delivers it to the annular liquid passage 405 of the liquid-cooling cover 404 through the pipeline. At the same time, the air to be cooled driven by the fan 201 flows through the annular air duct 203 embedded in the annular liquid passage 405. Since the pipe wall of the annular air duct 203 is in direct contact with the coolant, efficient heat exchange occurs, so that the air flowing through the pipe is pre-cooled before being sent out. The air blown out from the air duct 206 is no longer ambient temperature air, but low-temperature cold air processed by the liquid cooling system. This "pre-cooling" technology greatly improves the heat dissipation efficiency and extreme capabilities of air cooling, and solves the bottleneck of insufficient heat dissipation capacity of pure air cooling when facing extremely high heat flux density.

[0025] It should be further noted that the annular duct 203 is preferably made of copper or aluminum alloy with good thermal conductivity, and can be tightly bonded to the inner wall of the annular liquid channel 405 using thermally conductive silicone or by brazing to maximize heat exchange efficiency. The liquid cooling cover 404 is made of aluminum.

[0026] In one embodiment of the present invention, the liquid cooling cover 404 is connected to the water cooling tank 401 and the liquid pump 402 via the inlet pipe 403 and the return pipe 406, forming a closed coolant circulation loop. Specifically, this closed loop ensures the continuous circulation and reuse of the coolant. The coolant carrying heat flows out from the annular liquid path 405 and returns to the water cooling tank 401 via the return pipe 406.

[0027] It should be further noted that the water-cooled tank 401 should be equipped with a liquid filling port with a sealing cap (not shown in the figure), a drain valve located at the bottom (not shown in the figure), and a liquid level observation window (not shown in the figure). The coolant can be deionized water. To further improve the heat dissipation capacity, a water-cooled secondary radiator (not shown in the figure) is connected in series in this circuit to finally dissipate the heat in the liquid circuit to the external environment.

[0028] In one embodiment of the present invention, a temperature detection module is provided inside the cabinet 1, which includes multiple temperature sensors evenly distributed above the mounting plate 6. Specifically, the temperature detection module constitutes the sensing and feedback network of the entire intelligent heat dissipation system. Its core principle is to achieve real-time, panoramic monitoring of the thermal field inside the cabinet through distributed temperature measurement, providing an accurate data foundation for the intelligent decision-making of the central controller.

[0029] Provide closed-loop control feedback signals: The reading of each temperature sensor is a feedback signal. The central controller continuously collects these signals and compares them with preset safe temperature thresholds. When the temperature at a certain point exceeds the threshold, it can trigger the corresponding telescopic air column 205 in the directional heat dissipation component 2 to move to that area for targeted enhanced cooling.

[0030] When the temperature sensor sends the collected temperature data to the central controller, the central controller compares the collected temperature data with the preset safe temperature threshold. If the collected temperature data is higher than the preset safe temperature threshold, the central controller controls the directional heat dissipation component 2 and the water cooling component 4 to cool the inside of the cabinet 1. At the same time, it also controls the air guide plate 302 to rotate at a certain angle and adjusts the power of the liquid pump 402 of the water cooling component 4 and the speed of the fan 201 to accelerate the air flow rate inside the cabinet 1 and achieve rapid cooling inside the cabinet 1.

[0031] Once the temperature drops to a safe range, the central controller can instruct the system to reduce heat dissipation power or return to standby mode, achieving on-demand heat dissipation and energy saving.

[0032] In one embodiment of the present invention, when the overall internal temperature or temperature of a large area of ​​the cabinet 1 is higher than a preset safe temperature threshold, the air guide plate 302 can be controlled to open upward at 45 degrees, connecting the interior of the cabinet 1 with the external environment, accelerating the airflow inside the cabinet 1, and allowing the internal heat of the cabinet 1 to dissipate quickly, thus achieving rapid cooling of the cabinet 1. When the internal temperature of the cabinet 1 drops to the preset safe temperature threshold, the angle between the air guide plate 302 and the cabinet 1 is gradually reduced. When the internal temperature of the cabinet 1 is much lower than the preset safe temperature threshold, the air guide plate 302 is completely closed, isolating the interior of the cabinet 1 from the external environment. If the interior of the cabinet 1 is in contact with the external environment for a long time, it may accelerate the aging of the electronic components inside the cabinet 1. Therefore, the air in the external environment contains a certain amount of moisture, and when the moisture comes into contact with the electronic components inside the cabinet 1, the electronic components will undergo a certain degree of oxidation. If the contact is prolonged, it will reduce the service life of the electronic components.

[0033] like Figure 8As shown, in one embodiment of the present invention, the air guide assembly 3 includes a fan blade fixing plate 301 fixed to the inner side wall of the cabinet 1. Multiple air guide plates 302 arranged in a linear array along the vertical direction are rotatably connected between the two fan blade fixing plates 301. A fan plate drive motor 304 is installed on one side of the fan blade fixing plate 301 through a motor fixing plate 303. A rotating rod 305 is fixedly connected to the output end of the fan plate drive motor 304, and the end of the rotating rod 305 is fixedly connected to the fan blade fixing plate 301 on the same side. A connecting rod 306 corresponding to the air guide plate 302 is fixedly sleeved on the rotating rod 305. The end of each connecting rod 306 away from the rotating rod 305 is connected together through a connecting rod 307. Specifically, the core working principle of this air guide assembly 3 is to directly increase the heat dissipation by increasing the effective ventilation area. When the temperature sensor inside the cabinet detects that the ambient temperature exceeds the preset threshold, the central controller will send a command to the air vane drive motor 304. When the air vane drive motor 304 starts, it drives the rotating rod 305 to rotate. The rotation of the rotating rod 305 drives all the connecting rods 306 on it to move synchronously. The connecting rods 306 then pull or push the adjusting arms of all the air guide plates 302 through the common connecting rod 307. Since the connecting rod 307 is rigid and linked with all the air guide plates 302, it synchronously drives all the air guide plates 302 to rotate and open to the outside of the cabinet 1.

[0034] Heat dissipation mechanism: Normal / Low Temperature State: The air guide plate 302 is in the closed state, flush with the cabinet wall, maintaining the basic airtightness of the cabinet 1 and preventing a large amount of dust and foreign objects from entering.

[0035] High-Temperature Enhanced Heat Dissipation: The air guide plate 302 rotates outward and opens, directly forming a large additional ventilation opening on the side wall of cabinet 1. This opening significantly improves airflow between the inside and outside of the cabinet. Hot air inside the cabinet can be more smoothly exhausted through the newly opened outlet, while cool air outside can enter more effectively from the bottom or other inlets, significantly enhancing natural convection cooling through the chimney effect. Simultaneously, when the bottom cooling fan 7 is operating, the opening of the air guide plate 302 provides a lower-resistance exhaust channel for hot air, preventing excessive positive pressure inside the cabinet, greatly improving fan efficiency, and enhancing the forced air cooling effect.

[0036] like Figure 1As shown, in one embodiment of the present invention, vertical profile steel plates 5 are provided at the four corners of the interior of the cabinet 1, and mounting plates 6 for installing electrical components are provided on them. The mounting plates 6 have several ventilation holes, and a cooling fan 7 is provided at the bottom of the cabinet 1. Specifically, the cooling fan 7 acts as an active air source, drawing in cooling air from outside the cabinet 1 and forcibly blowing this airflow upwards. The ventilation holes on the mounting plates 6 allow the cooling airflow from the cooling fan 7 to directly penetrate the mounting plates 6 and blow towards the bottom housing or heat dissipation base of the electrical components 8 fixed thereon, effectively dissipating heat from the bottom of the components.

[0037] In one embodiment of the present invention, a central controller is also included. The central controller is electrically connected to the fan 201, the fan drive motor 304, the liquid pump 402 and the temperature sensor inside the cabinet, and is used to automatically control the coordinated operation of each component based on temperature information.

[0038] In use, when the central controller determines that the collected temperature data is higher than the preset safe temperature threshold, and identifies the location of the temperature sensor that is above the preset safe temperature threshold, the positions of the telescopic air column 205 and the air duct 206 are adjusted to the location of the temperature sensor whose temperature data is above the preset safe temperature threshold. In addition, the central controller controls the opening of the air guide plate 302 to connect the interior of the cabinet 1 with the external environment. At the same time, the central controller turns on the liquid pump 402 and the fan 201. The fan 201 delivers the gas used for heat dissipation to the annular air duct 203 located in the annular liquid circuit 405. The coolant in the annular liquid circuit 405 absorbs the heat in the gas used for heat dissipation, reducing the temperature of the gas used for heat dissipation. Finally, the air duct 206 cools the location of the temperature sensor whose temperature data is above the preset safe temperature threshold. When the real-time temperature data is lower than the preset safe temperature threshold, the central controller closes the air guide plate 302 and simultaneously turns off the liquid pump 402 and the fan 201, ending the cooling process of the cabinet 1.

[0039] Example 2: This example is basically the same as the previous example, except that the directional heat dissipation distribution cabinet with adjustable air guide plate is specially adapted to the centralized power distribution and control system of high-power DC fast charging piles in new energy electric vehicle charging stations. The core feature of this scenario is that multiple DC charging modules with output power of up to 60-120kW and corresponding AC power distribution, filtering and control systems need to be densely installed in the cabinet. These devices will generate instantaneous and highly concentrated heat loads when working, which puts extreme demands on the dynamic response speed and local hot spot handling capabilities of the heat dissipation system. Therefore, this embodiment has made targeted optimizations based on the general structure: First, in terms of control strategy, the central controller has a pre-set database of charging module power-heat generation curves, and is logically bound to each telescopic air column 205 and the corresponding temperature sensor group. When the system receives a command through the communication interface that a charging module is about to start high-power output, the controller can proactively call the prediction model before the temperature sensor actually detects the temperature rise, and in advance instruct the telescopic air column 205 corresponding to the module to descend to the preset optimal height, while simultaneously starting the liquid cooling circulation of the corresponding branch and fine-tuning the angle of the local air guide plate 302, thereby constructing a "predictive" directional heat dissipation field, realizing near synchronization between heat dissipation action and heat generation process, effectively avoiding the risk of instantaneous overheating caused by the lag of traditional temperature feedback control; Second, in terms of hardware enhancement, in order to cope with the stable high heat flow generated by continuous high current operation, the annular liquid circuit 405 in this embodiment... Spiral guide fins are added to the inner wall to significantly increase the contact area and turbulence between the coolant and the annular air duct 203. The capacity of the water-cooled box 401 is designed to be more than twice that of a conventional power distribution cabinet. It is also equipped with dual liquid pumps 402, one for use and one for backup, to ensure that the coolant temperature rise can still be controlled within the allowable range when the ambient temperature exceeds 40°C in the summer and all charging modules are running at full load. This ensures that the airflow ejected from the blower duct 206 is always low-temperature air that has been efficiently pre-cooled. In addition, for the heat conducted through the mounting plate 6 at the bottom of the charging module, this embodiment specifically stipulates that the mounting plate 6 is made of aluminum-magnesium alloy with a high thermal conductivity, and high-performance phase change thermally conductive pads are filled at the interface between the mounting plate 6 and the module housing. This allows the heat at the bottom of the module to be quickly diffused laterally to the entire mounting plate 6 area, and then effectively carried away by the forced airflow provided by the bottom cooling fan 7, which continuously rises from the bottom through the vent holes. This forms an effective supplement and synergy with the top directional air cooling.

[0040] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A directional heat dissipation distribution cabinet with an adjustable air guide plate, characterized in that, It includes a cabinet (1) and a heat dissipation unit disposed therein. The heat dissipation unit includes a directional heat dissipation component (2) for point-spray cooling of key heat-generating components, an air guide component (3) for optimizing the overall airflow organization inside the cabinet, and a water cooling component (4) for pre-cooling the cooling airflow of the directional heat dissipation component (2). The directional heat dissipation component (2) includes a fan (201) installed at least on the top wall of the cabinet (1), an air supply pipe (202) connected to the outlet of the fan (201), and an annular air duct (203) installed inside the power distribution cabinet and connected to the air supply pipe (202). The annular air duct (203) has multiple downward air outlet ducts (204) evenly distributed on it. Each duct (204) is connected to an adjustable telescopic air column (205) at its end. The telescopic air column (205) has multiple air blowing pipes (206) at different heights.

2. The directional heat dissipation distribution cabinet with adjustable air guide plate according to claim 1, characterized in that: The telescopic air column (205) is a telescopic sleeve structure, comprising at least two relatively sliding tube sections, and is fixed by a locking device.

3. A directional heat dissipation distribution cabinet with an adjustable air guide plate according to claim 1, characterized in that: The water-cooling assembly (4) includes a water-cooling box (401), a liquid pump (402), and a liquid-cooling cover (404) located on the rear side of the cabinet (1). The input end of the liquid pump (402) is connected to the water-cooling box (401). An annular liquid path (405) is formed inside the liquid-cooling cover (404). An annular air duct (203) is embedded in the annular liquid path (405), so that the airflow flowing through the annular air duct (203) exchanges heat with the coolant in the annular liquid path (405).

4. A directional heat dissipation distribution cabinet with an adjustable air guide plate according to claim 3, characterized in that: The liquid cooling cover (404) is connected to the water cooling box (401) and the liquid pump (402) through the liquid inlet pipe (403) and the liquid return pipe (406) to form a closed coolant circulation loop.

5. A directional heat dissipation distribution cabinet with an adjustable air guide plate according to claim 4, characterized in that: The air guide assembly (3) includes a fan blade fixing plate (301) fixed to the inner wall of the cabinet (1). Multiple air guide plates (302) arranged in a linear array along the vertical direction are rotatably connected between the two fan blade fixing plates (301). A fan plate drive motor (304) is installed on one side of the fan blade fixing plate (301) through a motor fixing plate (303). A rotating rod (305) is fixedly connected to the output end of the fan plate drive motor (304), and the end of the rotating rod (305) is fixedly connected to the fan blade fixing plate (301) on the same side. A connecting rod (306) corresponding to the air guide plate (302) is fixedly sleeved on the rotating rod (305). The end of each connecting rod (306) away from the rotating rod (305) is connected together through a connecting rod (307).

6. A directional heat dissipation distribution cabinet with an adjustable air guide plate according to claim 5, characterized in that: Vertical profile steel plates (5) are provided at the four corners of the cabinet (1), and mounting plates (6) for installing electrical components are provided on them. Several ventilation holes are provided on the mounting plates (6).

7. A directional heat dissipation distribution cabinet with an adjustable air guide plate according to claim 6, characterized in that: The bottom of the cabinet (1) is equipped with a cooling fan (7).

8. A directional heat dissipation distribution cabinet with an adjustable air guide plate according to claim 7, characterized in that: The cabinet (1) is equipped with a temperature detection module, which includes multiple temperature sensors evenly distributed above the mounting plate (6).

9. A directional heat dissipation distribution cabinet with an adjustable air guide plate according to claim 1, characterized in that: It also includes a central controller, which is electrically connected to the fan (201), the fan drive motor (304), the liquid pump (402) and the temperature sensor inside the cabinet, and is used to automatically control the coordinated operation of each component based on temperature information.

Images