Power distribution cabinet for server room

Abstract

The invention relates to the technical field of power distribution cabinets, in particular to a power distribution cabinet for a server room, which comprises a liquid cooling assembly, a replacement assembly, a driving assembly and a current adjusting assembly, the two liquid cooling assemblies are oppositely arranged on the upper portion and the lower portion of the outer shell. The replacement assembly is connected with the liquid cooling assembly; the driving assembly is connected with the liquid cooling assembly; the flow adjusting assembly is arranged between the two groups of liquid cooling assemblies; the covering effect is improved through air cooling, heat exchange is carried out on gas after heat absorption and cooling water, cooling circulation is formed, when the temperature in the cabinet is lower than 40 DEG C, low-temperature gas carries out rotational flow diffusion movement, the covering effect and the heat absorption effect are improved, when the temperature in the cabinet is higher than 40 DEG C, the low-temperature gas vertically flows, the circulation speed is increased, and the heat absorption effect is improved. Turbulent flow is generated to take away heat quickly; the problems that when the power distribution cabinet is cooled in a liquid cooling mode, uniform heat dissipation of all space in the cabinet cannot be achieved, and the heat dissipation effect of the portion away from a pipeline is poor are solved.

Description

Technical Field

[0001] This invention relates to the field of power distribution cabinet technology, and specifically to a power distribution cabinet for server rooms. Background Technology

[0002] A power distribution cabinet is an electrical device used to distribute and control electrical energy. It mainly distributes the current from the high-voltage power grid to provide appropriate voltage and current to different devices. Power distribution cabinets for server rooms are power distribution equipment specifically designed for data centers and server rooms. Compared with power distribution cabinets used in ordinary places, power distribution cabinets used in server rooms have higher requirements for heat dissipation performance and protection level.

[0003] Server room power distribution cabinets need to operate continuously for extended periods, leading to heat buildup. Increased internal temperature increases resistance, increasing energy consumption and potentially damaging semiconductor devices. To ensure stable server operation, cooling is crucial. Current methods primarily involve ventilation holes, opening cabinet doors, or using fans for air cooling. However, air cooling is inefficient and allows dust to enter. Directly channeling air conditioning can cause condensation upon contact with components, compromising equipment safety and potentially causing electrical leakage. Existing technologies offer solutions to this problem, such as a server room power distribution cabinet (patent publication CN113851946B). This design incorporates liquid storage spaces on the side and top walls, using liquid cooling instead of air cooling. These spaces are interconnected, and the liquid absorbs heat, allowing for pump-driven replacement and continuous heat dissipation within the cabinet.

[0004] While existing technologies have solved the problems of low air cooling efficiency and the safety hazards caused by dust entering the distribution cabinet when the door is opened, the following issues still exist: When a space for storing heat-absorbing liquid is set up on the cabinet for heat dissipation, it can only quickly cool down the side walls of the distribution cabinet, while the cooling effect on components located in the center of the distribution cabinet will be greatly reduced; and when liquid cooling is achieved by running liquid through pipes inside the distribution cabinet, the limited arrangement of the liquid pipes makes it difficult to achieve uniform heat dissipation throughout the entire space of the distribution cabinet, which can still lead to localized overheating inside the distribution cabinet, resulting in unstable server operation.

[0005] In view of the above, in order to overcome the above technical problems, the present invention designs a power distribution cabinet for server room. Summary of the Invention

[0006] This invention provides a power distribution cabinet for server rooms, solving the problem that liquid cooling cannot achieve uniform heat dissipation throughout the entire cabinet space and that heat dissipation is poor in areas far from pipes. By combining liquid cooling with air cooling, the liquid cooling ring and its surface guide fins blow low-temperature gas toward electronic components, while air cooling increases the coverage effect and allows the heat-absorbing gas to exchange heat with the cooling water, forming a cooling cycle. When the temperature inside the cabinet is below 40 degrees Celsius, the low-temperature gas undergoes swirling diffusion motion, improving the coverage and heat absorption effects. When the temperature inside the cabinet is above 40 degrees Celsius, the low-temperature gas flows vertically, increasing the circulation speed and generating turbulence to quickly remove heat.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A power distribution cabinet for a server room includes an outer shell, and further includes a liquid cooling component, a displacement component, a drive component, and a flow regulating component. Two sets of liquid cooling components are arranged opposite each other on the upper and lower parts of the outer shell. The displacement component is connected to the liquid cooling component. The drive component is connected to the liquid cooling component; when the drive component is energized, it drives the two sets of liquid cooling components to rotate synchronously. When the two sets of liquid cooling components rotate, gas from the upper and lower parts of the outer shell flows towards the center and, after collision, flows between the displacement component and the outer shell. Two sets of flow regulating components are arranged, one below the liquid cooling component on the upper part of the outer shell and the other above the liquid cooling component on the lower part of the outer shell. When the temperature is below 40 degrees Celsius, the gas undergoes a swirling diffusion motion towards the center of the outer shell after passing through the flow regulating components; when the temperature is above 40 degrees Celsius, the gas undergoes a linear motion towards the center of the outer shell after passing through the flow regulating components.

[0009] The liquid cooling assembly includes a liquid storage ring, flow guide fins, and a rotary joint; the liquid storage rings in the two sets of liquid cooling assemblies are symmetrically installed in the upper and lower parts of the outer shell; the flow guide fins are arranged in a circumferential array on the liquid storage ring; the rotary joint is connected to the liquid storage ring; the displacement assembly includes a liquid storage plate, a water inlet pipe, and a water pump; the liquid storage plate is disposed in the outer shell, and a return channel is formed between the liquid storage plate and the outer shell, and the liquid storage plate and the liquid storage ring are connected through the rotary joint; the water inlet pipe is connected to the liquid storage plate; the water pump is connected to the water inlet pipe.

[0010] In the above scheme, the guide fins on the liquid storage ring can increase the heat absorption area. Through the rotation of the liquid storage ring, the guide fins can also guide the air inside the outer shell. The liquid storage ring at the top of the outer shell blows air downward through the guide fins, and the liquid storage ring at the bottom of the outer shell blows air upward through the guide fins. During the flow of low-temperature air, the entire interior of the outer shell can be evenly covered, so that the entire distribution cabinet can be evenly cooled. After the opposing airflows collide, they will diffuse to both sides of the outer shell and return to the position of the liquid storage ring through the return channel between the liquid storage plate and the outer shell. The turbulence formed after the collision of the convective airflows can accelerate the circulation speed, and some airflow will flow along the inner wall of the liquid storage plate to the four corners. After the flowing air absorbs heat from the electronic components inside the distribution cabinet, the air will transfer the heat to the water in the liquid storage plate and the liquid storage ring, realizing heat exchange circulation. Through the connection of the water pump and the liquid storage plate, the cooled water after absorbing heat can be replaced to ensure that the cooled water can always provide a cooling effect.

[0011] The liquid storage plate has an upward slot and a downward slot in the middle, and the liquid storage plate stores cooling water inside; the upward slots are symmetrically opened on both sides of the liquid storage plate and are inclined upward; the downward slots are opened in the opposite direction to the upward slots.

[0012] In the above scheme, by setting up the rising and falling slots, when the airflow from the upper and lower liquid storage rings collides and diffuses to both sides, the diffused airflow can pass through the rising and falling slots. In the return channel, part of the airflow rises and the other part falls. The rising airflow will flow to the upper liquid storage ring and be guided back to the middle of the outer shell by the upper liquid storage ring and the guide fins to form an upper circulation. The falling airflow will flow to the lower liquid storage ring and be guided back to the middle of the outer shell by the lower liquid storage ring and the guide fins to form a lower circulation. After absorbing heat as it flows over the surface of the electronic components, the airflow will flow to the return channel for cooling.

[0013] The flow guide fins include axial flow fins and centrifugal fins; the axial flow fins have an arc-shaped structure and are arranged in a circumferential array between the rotary joint and the liquid storage ring; the centrifugal fins have a vertical structure and are arranged between every two axial flow fins.

[0014] In the above scheme, the axial flow fins enable the gas to flow mainly in an axial manner, thereby ensuring that the upper and lower ends of the outer casing can generate opposing airflow and can also produce an air extraction effect in the return channel, ensuring the airflow circulation effect; in order to prevent the axial flow fins from failing to diffuse the gas to the four corners, the axial flow fins can centrifuge a portion of the gas, causing it to diffuse to the four corners of the liquid storage plate, thereby ensuring that all electronic components in the distribution cabinet can be covered by low-temperature air.

[0015] The drive assembly includes a drive motor, a connecting rod, and a drive gear; the drive motor is installed in the middle of the housing; the connecting rod connects the upper and lower rotary joints of the housing; the drive gear is installed on the connecting rod and meshes with the output gear of the drive motor.

[0016] In the above scheme, the motor driving force is transmitted to two rotary joints through the connecting rod, and the two liquid storage rings at the top and bottom of the outer shell can rotate synchronously through the rotary joints, so that the airflow in the upper and lower convection is equal, thereby ensuring that when they collide, they can diffuse to both sides and enter the return channel for circulation.

[0017] The flow control assembly includes a mounting plate, a thermal drive component, and flow control fins; the mounting plate is connected to the outer casing; the thermal drive component is connected to a connecting rod; and the flow control fins are arranged in a circumferential array between the mounting plate and the thermal drive component.

[0018] In the above scheme, the flow control component can change the airflow trend by changing the angle of the flow control fins when the temperature rises. When the temperature is below 40 degrees Celsius, the angle between the flow control fins and the horizontal plane is less than 45 degrees, so that the gas will swirl after passing through the circumferential array of flow control fins, thereby extending the gas flow path and allowing the gas to fully contact the electronic components, improving the heat absorption efficiency and thus better removing heat. When the temperature is above 40 degrees Celsius, the angle between the flow control fins and the horizontal plane is close to 90 degrees, so that the gas can flow in a near-straight line, thereby increasing the circulation speed and allowing the heat to be removed quickly.

[0019] The thermal drive component includes a mounting plate, a pressure ring, a thermal drive spring, a lifting spring, and a torsion spring. The mounting plate is connected to a connecting rod, and rotating slots are arranged in a circumferential array on the mounting plate. A pressure plate is provided at the tail of the flow-regulating fin. The pressure plate is rotatably mounted in the rotating slot and is perpendicular to the flow-regulating fin. The pressure ring is slidably mounted in the mounting plate. The thermal drive spring is connected between the pressure ring and the mounting plate. The lifting spring is connected between the pressure ring and the mounting plate and is sleeved on the outer ring of the thermal drive spring. The torsion spring is connected between the pressure plate and the rotating slot.

[0020] In the above scheme, the pressure ring can make the flow regulating fins rotate. When the temperature recovers, the lifting spring can reset the pressure ring to its original position. With the torsional force of the torsion spring, the angle between the flow regulating fins and the horizontal plane can be restored from 90 degrees to less than 45 degrees, so that the airflow can return to a rotating state to maintain the coverage effect on the parts in the distribution box.

[0021] The thermal drive spring is made of shape memory metal, and it spontaneously contracts when the temperature is above 40 degrees Celsius. The contraction force is greater than the sum of the lifting spring force and the torsion of all torsion springs.

[0022] In the above solution, the heat-driven spring can automatically contract when the temperature reaches 40 degrees Celsius, thereby changing the rotation angle of the flow regulating fins, so that the flow regulating fins can work normally. Moreover, the structure is simple and does not require the use of additional temperature sensing components and circuit control. On the one hand, it can save space and energy. On the other hand, compared with temperature sensing control circuit, it can ensure normal operation at higher temperatures, is less prone to failure, and improves safety performance.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] 1. Compared with existing server room power distribution cabinet devices, this invention combines air cooling and liquid cooling. Based on liquid cooling, the guide fins on the surface of the liquid cooling ring can quickly exchange heat with the air and drive the air in the upper and lower parts of the power distribution cabinet to flow towards the middle to form convection. After the convection collision, the air will move to both sides and return to the liquid cooling ring position through the return channel to form a flow cycle. During the circulation process, the low temperature air absorbs the heat generated by the electronic components and transfers the heat to the cooling water through contact with the liquid storage plate in the return channel, so that the power distribution cabinet can maintain a low temperature.

[0025] 2. This invention, by setting up a flow regulation component, allows the low-temperature gas flowing from the guide fins to the flow regulation fins to form a swirling diffusion trend on the surface of the flow regulation fins when the temperature inside the distribution cabinet is below 40 degrees Celsius. This extends the gas flow path, improves the coverage effect, and achieves all-round uniform heat dissipation inside the distribution cabinet. Furthermore, the gas can prolong the contact time with electronic components, fully absorbing heat and improving heat exchange efficiency. When the temperature inside the distribution cabinet is above 40 degrees Celsius, the low-temperature gas forms a vertical flow trend on the surface of the flow regulation fins. The convective gas will directly collide and rapidly diffuse to both sides, generating turbulence. At this time, the gas circulation speed will increase, thereby quickly carrying away heat and transferring it to the cooling water, ensuring that the distribution cabinet maintains a safe temperature.

[0026] 3. This invention, by equipping the surface of the liquid cooling ring with centrifugal and axial fins, enables the gas to move in a manner that is primarily axial flow with secondary radial flow when the liquid cooling ring rotates. This ensures normal circulation while also allowing some gas to be centrifuged and directed to the corners of the distribution cabinet, ensuring that all electronic components within the cabinet are covered by air cooling. Furthermore, the rotation of the liquid cooling ring enhances the fluidity of the liquid, and the contact between the centrifugal and axial fins and the surrounding air becomes more frequent and uniform during rotation. This helps to break the thermal boundary layer and improve heat transfer efficiency. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is an overall structural diagram of the present invention;

[0029] Figure 2 This is the front view of the present invention;

[0030] Figure 3 This is a cross-sectional view of the liquid storage plate of the present invention;

[0031] Figure 4 This is a schematic diagram of the connection structure between the liquid cooling component and the liquid storage plate of the present invention;

[0032] Figure 5 This is a schematic diagram of the liquid cooling component structure of the present invention;

[0033] Figure 6 This is a schematic diagram of the thermal drive component structure of the present invention;

[0034] Figure 7 This is a diagram showing the airflow state inside the outer casing of the present invention at temperatures below 40 degrees Celsius;

[0035] Figure 8 This is a diagram showing the airflow state inside the outer casing of the present invention at temperatures above 40 degrees Celsius;

[0036] In the diagram: 1. Outer shell; 11. Return channel; 2. Liquid cooling assembly; 21. Liquid storage ring; 22. Guide fins; 221. Axial flow fins; 222. Centrifugal fins; 23. Rotary joint; 3. Displacement assembly; 31. Liquid storage plate; 311. Rising slot; 312. Falling slot; 32. Water inlet pipe; 33. Water pump; 4. Drive assembly; 41. Drive motor; 42. Connecting rod; 43. Drive gear; 5. Flow regulating assembly; 51. Mounting plate; 52. Thermal drive component; 521. Mounting disc; 5211. Rotating slot; 522. Pressure ring; 523. Thermal drive spring; 524. Lifting spring; 525. Torsion spring; 53. Flow regulating fins; 531. Pressure plate. Detailed Implementation

[0037] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0038] Please see Figures 1 to 8 This invention provides a power distribution cabinet for server rooms, the technical solution of which is as follows:

[0039] As a specific embodiment of the present invention, refer to Figure 1 , Figure 7 and Figure 8 A power distribution cabinet for a server room includes an outer shell 1, and further includes a liquid cooling assembly 2, a displacement assembly 3, a drive assembly 4, and a flow regulating assembly 5. Two sets of liquid cooling assemblies 2 are arranged opposite each other at the upper and lower parts of the outer shell 1. The displacement assembly 3 is connected to the liquid cooling assembly 2. The drive assembly 4 is connected to the liquid cooling assembly 2, and when the drive assembly 4 is energized, it drives the two sets of liquid cooling assemblies 2 to rotate synchronously. When the two sets of liquid cooling assemblies 2 rotate, the gas in the upper and lower parts of the outer shell 1 flows towards the center and, after collision, flows between the displacement assembly 3 and the outer shell 1. Two sets of flow regulating assemblies 5 are arranged, one below the liquid cooling assembly 2 at the upper part of the outer shell 1 and the other above the liquid cooling assembly 2 at the lower part of the outer shell 1. When the temperature is below 40 degrees Celsius, the gas undergoes a swirling diffusion motion towards the center of the outer shell 1 after passing through the flow regulating assembly 5; when the temperature is above 40 degrees Celsius, the gas undergoes a linear motion towards the center of the outer shell 1 after passing through the flow regulating assembly 5.

[0040] As a specific embodiment of the present invention, refer to Figure 1 , Figure 2 and Figure 4The liquid cooling assembly 2 includes a liquid storage ring 21, flow guide fins 22, and a rotary joint 23; the liquid storage rings 21 in the two sets of liquid cooling assemblies 2 are symmetrically installed in the upper and lower parts of the outer shell 1; the flow guide fins 22 are arranged in a circumferential array on the liquid storage ring 21; the rotary joint 23 is connected to the liquid storage ring 21; the displacement assembly 3 includes a liquid storage plate 31, a water inlet pipe 32, and a water pump 33; the liquid storage plate 31 is disposed inside the outer shell 1, and a return channel 11 is formed between the liquid storage plate 31 and the outer shell 1, and the liquid storage plate 31 and the liquid storage... The rings 21 are connected by a rotary joint 23, which is made of high-strength alloy. The outside of the rotary joint 23 is connected to the liquid storage ring 21 through an alloy pipe, and its bottom is connected to the liquid storage plate 31. The connection between the rotary joint 23 and the liquid storage plate 31 can be connected by a sealed bearing to ensure sealing performance. Its structure is the same as the existing rotary joint structure, except that an alloy pipe is added at the connection between the rotary joint 23 and the liquid storage ring 21 to achieve the connection effect. The water inlet pipe 32 is connected to the liquid storage plate 31. The water pump 33 is connected to the water inlet pipe 32. The guide fins 22 on the liquid storage ring 21 can increase the heat absorption area. Through the rotation of the liquid storage ring 21, the guide fins 22 can also guide the air inside the outer shell 1. The liquid storage ring 21 at the top of the outer shell 1 blows air downward through the guide fins 22, and the liquid storage ring 21 at the bottom of the outer shell 1 blows air upward through the guide fins 22. During the flow of low-temperature air, the entire interior of the outer shell 1 can be evenly covered, so that the entire distribution cabinet can be evenly cooled. After the opposing airflows collide, they will diffuse to both sides of the outer shell 1 and return to the position of the liquid storage ring 21 through the return channel 11 between the liquid storage plate 31 and the outer shell 1. The collision of the convective airflows forms turbulence, which can accelerate the circulation speed, and some airflow will flow along the inner wall of the liquid storage plate 31. The air moves to the four corners; after the air absorbs heat from the electronic components in the distribution cabinet, it transfers the heat to the water in the liquid storage plate 31 and the liquid storage ring 21, thus achieving a heat exchange cycle; the water pump 33 is connected to the liquid storage plate 31, and an external water storage device can be connected to the water pump 33. After the cooling water in the liquid storage plate 31 absorbs heat, the water pump 33 delivers the external low-temperature cooling water to the liquid storage plate 31, and the water is discharged to the external water storage device through the water outlet pipe connected to the liquid storage plate 31. Alternatively, when the cooling water in the liquid storage plate 31 is higher than 40 degrees Celsius through the temperature sensor, the water pump 33 rotates to extract the water from the liquid storage plate 31. After extraction, the water pump 33 is connected to the water storage device to deliver the low-temperature cooling water to the liquid storage plate 31, ensuring that the cooling water can always provide a cooling effect.

[0041] As a specific embodiment of the present invention, refer to Figure 3 and Figure 4The liquid storage plate 31 has an upward groove 311 and a downward groove 312 in the middle. Cooling water is stored inside the liquid storage plate 31. The liquid storage plate 31 can be made of a metal material with good thermal conductivity, so that when the gas flows over the surface of the liquid storage plate 31, it can quickly transfer heat to the cooling water inside the liquid storage plate 31. The upward groove 311 is symmetrically opened on both sides of the liquid storage plate 31 and is inclined upward. The downward groove 312 is opened in the opposite direction to the upward groove 311. By setting up the rising slot 311 and the falling slot 312, when the airflow from the upper liquid storage ring 21 and the lower liquid storage ring 21 collides and diffuses to both sides, the diffused airflow can pass through the rising slot 311 and the falling slot 312. In the return channel 11, part of the airflow rises and the other part falls. The rising airflow will flow to the position of the upper liquid storage ring 21 and be guided again to the middle of the outer shell 1 by the upper liquid storage ring 21 and the guide fins 22 to form an upper circulation. The falling airflow will flow to the position of the lower liquid storage ring 21 and be guided again to the middle of the outer shell 1 by the lower liquid storage ring 21 and the guide fins 22 to form a lower circulation. After the airflow absorbs heat by flowing over the surface of the electronic component, it will flow to the return channel 11 for cooling.

[0042] As a specific embodiment of the present invention, refer to Figure 4 and Figure 5 The flow guide fins 22 include axial flow fins 221 and centrifugal fins 222. The axial flow fins 221 have an arc-shaped structure and are arranged in a circumferential array between the rotary joint 23 and the liquid storage ring 21. The centrifugal fins 222 have a vertical structure and are arranged between every two axial flow fins 221. The axial flow fins 221 enable the gas to flow mainly in an axial flow manner, thereby ensuring that the upper and lower ends of the outer casing 1 can generate opposing airflow and can also produce a suction effect on the air in the return channel 11, ensuring the airflow circulation effect. In order to prevent the axial flow fins 221 from failing to diffuse the gas to the four corners, the axial flow fins 221 can centrifuge a portion of the gas, causing it to diffuse to the four corners of the liquid storage plate 31, thereby ensuring that all electronic components in the distribution cabinet can be covered by low-temperature air.

[0043] As a specific embodiment of the present invention, refer to Figure 4The drive assembly 4 includes a drive motor 41, a connecting rod 42, and a drive gear 43. The drive motor 41 is installed in the middle of the outer casing 1, and the airflow flows towards the middle of the outer casing 1 to ensure that the heat generated by the drive motor 41 during long-term operation can be dissipated. The connecting rod 42 connects the upper and lower rotary joints 23 of the outer casing 1. The drive gear 43 is installed on the connecting rod 42 and meshes with the output gear of the drive motor 41. The motor drive force is transmitted to the two rotary joints 23 through the connecting rod 42, and the two liquid storage rings 21 at the upper and lower parts of the outer casing 1 can rotate synchronously through the rotary joints 23, so that the airflow in the upper and lower convection is equal, thereby ensuring that when they collide, they can diffuse to both sides and enter the return channel 11 for circulation.

[0044] As a specific embodiment of the present invention, refer to Figure 4 , Figure 7 and Figure 8 The flow control assembly 5 includes a mounting plate 51, a thermal drive component 52, and flow control fins 53. The mounting plate 51 is connected to the outer casing 1; the thermal drive component 52 is connected to the connecting rod 42; and the flow control fins 53 are arranged in a circumferential array between the mounting plate 51 and the thermal drive component 52. The flow control assembly 5 enables the airflow trend to change by altering the angle of the flow control fins 53 as the temperature rises. When the temperature is below 40 degrees Celsius, the angle between the flow control fins 53 and the horizontal plane is less than 45 degrees, causing the gas to swirl after passing through the circumferential array of flow control fins 53. This extends the gas flow path, allowing the gas to fully contact the electronic components, improving heat absorption efficiency, and thus better removing heat. When the temperature is above 40 degrees Celsius, the angle between the flow control fins 53 and the horizontal plane is close to 90 degrees, allowing the gas to flow in a near-straight line, thereby increasing the circulation speed and rapidly removing heat.

[0045] As a specific embodiment of the present invention, refer to Figure 4 and Figure 6The heat-driven component 52 includes a mounting plate 521, a pressure ring 522, a heat-driven spring 523, a lifting spring 524, and a torsion spring 525. The mounting plate 521 is connected to the connecting rod 42, and the inner radius of the mounting plate 521 is larger than the radius of the connecting rod 42, and it will not rotate with the connecting rod 42. The mounting plate 521 has a circumferential array of rotating grooves 5211. The tail of the flow-regulating fin 53 is provided with a pressure plate 531. The pressure plate 531 is rotatably installed in the rotating groove 5211, and the pressure plate 531 is perpendicular to the flow-regulating fin 53. The pressure ring 522 is slidably installed in the mounting plate 521. The heat-driven spring 523 is connected between the pressure ring 522 and the mounting plate 521. The lifting spring 524 is connected between the pressure ring 522 and the mounting plate 521, and is sleeved on the outer ring of the heat-driven spring 523. The torsion spring 525 is connected between the pressure plate 531 and the rotating groove 5211. The pressure ring 522 causes the flow-regulating fins 53 to rotate. When the temperature recovers, the lifting spring 524 returns the pressure ring 522 to its original position. Combined with the torsional force of the torsion spring 525, the angle between the flow-regulating fins 53 and the horizontal plane returns from 90 degrees to less than 45 degrees, allowing the airflow to return to a rotating state and maintain coverage of the components inside the distribution box. The heat-driven spring 523 is made of shape memory metal and spontaneously contracts when the temperature exceeds 40 degrees Celsius. The contraction force is greater than the sum of the elastic force of the lifting spring 524 and the torsional force of all the torsion springs 525. The heat-driven spring 523 automatically contracts when the temperature reaches 40 degrees Celsius, thereby changing the rotation angle of the flow-regulating fins 53, ensuring their normal operation. Its simple structure eliminates the need for additional temperature sensing components and circuit control, saving space and energy. Furthermore, compared to temperature-sensing control circuits, it ensures normal operation at higher temperatures, reducing the likelihood of malfunctions and improving safety.

[0046] Working process: When the drive motor 41 is powered on, it drives the liquid storage ring 21 to rotate through the drive gear 43. When the liquid storage rings 21 at the top and bottom of the outer shell 1 rotate, the gas at the top and bottom of the outer shell 1 flows towards the middle and absorbs the heat generated by the electronic components. After the convective gas collides, it diffuses to both sides and enters the return channel 11. After cooling in the return channel 11, it recirculates. When the temperature is higher than 40 degrees, the flow regulating fins 53 rotate to be perpendicular to the horizontal plane, so that the gas moves in a straight line towards the middle of the outer shell 1 after passing through the flow regulating fins 53. When the temperature is lower than 40 degrees, the flow regulating fins 53 rotate to be at an angle of less than 45 degrees to the horizontal plane, so that the gas moves in a swirling diffusion motion towards the middle of the outer shell 1 after passing through the flow regulating fins 53.

[0047] Specifically, when the drive motor 41 is energized, it drives the connecting rod 42 to rotate via the drive gear 43. The rotation of the connecting rod 42 causes the two liquid storage rings 21 at the upper and lower parts of the outer casing 1 to rotate synchronously. As the liquid storage rings 21 rotate, the guide fins 22 connected to them will force the gas to flow towards the middle of the outer casing 1. At this time, the gas at the upper part of the outer casing 1 will move downward and the gas at the lower part of the outer casing 1 will move upward, generating convection. The flow process will also carry away the heat generated by the electronic components. When the two airflows collide, they will diffuse to both sides, allowing some of the airflow to pass through the rising slot 311 in the return channel 1. One part of the airflow rises within the 11, while another part descends through the descending slot 312 within the return channel 11. As the gas flows within the return channel 11, the heat absorbed by the gas from the electronic components is transferred to the water in the liquid storage plate 31. Furthermore, under the guiding effect of the axial flow fins 221, the gas in the return channel 11 is drawn to the liquid storage ring 21 to form a flow circulation. When the water temperature in the liquid storage plate 31 and the liquid storage ring 21 rises above 40 degrees Celsius, the water in the liquid storage plate 31 and the liquid storage ring 21 is pumped away by the water pump 33 and then replaced with low-temperature cooling water, thereby maintaining the cooling effect continuously.

[0048] When the temperature inside the cabinet is below 40 degrees Celsius, the lifting spring 524 presses the pressure ring 522 against the highest point inside the mounting plate 521. At this time, the torsion spring 525 will cause the pressure plate 531 to form a 45-degree angle with the horizontal plane and press against the lower surface of the pressure ring 522. That is, the flow regulating fin 53 maintains a 45-degree angle with the horizontal plane. At this time, the gas guided by the flow guiding fin 22 to the flow regulating fin 53 will form a swirling diffusion trend on the surface of the flow regulating fin 53, ensuring that the low-temperature air can fully cover the electronic components inside the cabinet under low-temperature conditions, and extending the flow path of the low-temperature gas, thereby ensuring that the low-temperature gas flowing over the surface of the electronic components under low-temperature conditions... The body can effectively remove heat; when the temperature inside the cabinet is higher than 40 degrees Celsius, the heat drive spring 523 reaches the phase change temperature. At this time, the heat drive spring 523 contracts, overcoming the lifting force of the lifting spring 524 and the torsion force of the torsion spring 525 to pull the pressure ring 522 downward. At this time, the pressure plate 531 is pressed and parallel to the horizontal plane, and the flow regulating fins 53 form a 90-degree angle with the horizontal plane. At this time, the gas guided by the flow guiding fins 22 to the flow regulating fins 53 will pass through the surface of the flow regulating fins 53 and move in a straight line towards the middle of the outer shell 1, thereby increasing the circulation speed and quickly removing the heat generated by the electronic components to achieve the effect of rapid cooling.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as defined by the appended claims and their equivalents.

Claims

1. A power distribution cabinet for a server room, comprising an outer casing (1), characterized in that: It also includes a liquid cooling assembly (2), a displacement assembly (3), a drive assembly (4), and a flow regulating assembly (5); the liquid cooling assembly (2) is provided in two sets, which are arranged opposite to each other on the upper and lower parts of the outer shell (1); the displacement assembly (3) is connected to the liquid cooling assembly (2); the drive assembly (4) is connected to the liquid cooling assembly (2), and when the drive assembly (4) is powered on, it drives the two sets of liquid cooling assemblies (2) to rotate synchronously. When the two sets of liquid cooling assemblies (2) rotate, the gas in the upper and lower parts of the outer shell (1) flows towards the middle. After the collision, the gas flows between the displacement component (3) and the outer shell (1). The flow regulating component (5) is provided in two sets, which are respectively located below the liquid cooling component (2) at the top of the outer shell (1) and above the liquid cooling component (2) at the bottom of the outer shell (1). When the temperature is below 40 degrees Celsius, the gas undergoes a swirling diffusion motion toward the middle of the outer shell (1) after passing through the flow regulating component (5). When the temperature is above 40 degrees Celsius, the gas undergoes a straight motion toward the middle of the outer shell (1) after passing through the flow regulating component (5).

2. The power distribution cabinet for a server room according to claim 1, characterized in that: The liquid cooling assembly (2) includes a liquid storage ring (21), flow guide fins (22), and a rotary joint (23); the liquid storage rings (21) in the two sets of liquid cooling assemblies (2) are symmetrically installed in the upper and lower parts of the outer shell (1); the flow guide fins (22) are arranged in a circumferential array on the liquid storage ring (21); the rotary joint (23) is connected to the liquid storage ring (21); the displacement assembly (3) includes a liquid storage plate (31), a water inlet pipe (32), and a water pump (33); the liquid storage plate (31) is set in the outer shell (1), and a return channel (11) is formed between the liquid storage plate (31) and the outer shell (1), and the liquid storage plate (31) and the liquid storage ring (21) are connected through the rotary joint (23); the water inlet pipe (32) is connected to the liquid storage plate (31); the water pump (33) is connected to the water inlet pipe (32).

3. A power distribution cabinet for a server room according to claim 2, characterized in that: The liquid storage plate (31) has an upward slot (311) and a downward slot (312) in the middle, and the liquid storage plate (31) stores cooling water inside; the upward slot (311) is symmetrically opened on both sides of the liquid storage plate (31), and the upward slot (311) is opened at an angle upward; the downward slot (312) is opened in the opposite direction to the upward slot (311).

4. A power distribution cabinet for a server room according to claim 2, characterized in that: The flow guide fins (22) include axial flow fins (221) and centrifugal fins (222); the axial flow fins (221) are arc-shaped and are arranged in a circumferential array between the rotary joint (23) and the liquid storage ring (21); the centrifugal fins (222) are vertical and are arranged between two adjacent axial flow fins (221).

5. A power distribution cabinet for a server room according to claim 2, characterized in that: The drive assembly (4) includes a drive motor (41), a connecting rod (42), and a drive gear (43); the drive motor (41) is installed in the middle of the outer casing (1); the connecting rod (42) is connected between the upper rotary joint (23) and the lower rotary joint (23) of the outer casing (1); the drive gear (43) is installed on the connecting rod (42) and meshes with the output gear of the drive motor (41).

6. A power distribution cabinet for a server room according to claim 5, characterized in that: The flow control assembly (5) includes a mounting plate (51), a heat drive component (52), and flow control fins (53); the mounting plate (51) is connected to the outer shell (1); the heat drive component (52) is connected to the connecting rod (42); the flow control fins (53) are arranged in a circumferential array on the heat drive component (52).

7. A power distribution cabinet for a server room according to claim 6, characterized in that: The heat-driven component (52) includes a mounting plate (521), a pressure ring (522), a heat-driven spring (523), a lifting spring (524), and a torsion spring (525); the mounting plate (521) is connected to the connecting rod (42), and a rotating groove (5211) is formed in a circumferential array on the mounting plate (5211); a pressure plate (531) is provided at the tail of the flow-regulating fin (53); the pressure plate (531) is rotatably mounted in the rotating groove (5211), and the pressure plate is rotated. The plate (531) is perpendicular to the flow regulating fin (53); the pressure ring (522) is slidably installed in the mounting plate (521); the heat drive spring (523) is connected between the pressure ring (522) and the mounting plate (521); the lifting spring (524) is connected between the pressure ring (522) and the mounting plate (521) and is sleeved on the outer ring of the heat drive spring (523); the torsion spring (525) is connected between the pressure plate (531) and the rotating groove (5211).

8. A power distribution cabinet for a server room according to claim 7, characterized in that: The heat-driven spring (523) is made of shape memory metal. When the temperature is above 40 degrees Celsius, the heat-driven spring (523) spontaneously contracts, and the contraction force is greater than the sum of the elastic force of the lifting spring (524) and the torsion force of all the torsion springs (525).

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