Cooling device of server and using method of cooling device

Abstract

The invention relates to the technical field of server cooling, in particular to a server cooling device and a using method thereof.The server cooling device comprises a drawer-shaped server case, an air inlet is formed in the left side of the case, an air outlet is formed in the right side of the case, and a vortex fan is arranged in the air inlet. According to the cooling device of the server and the using method thereof, the dust concentration is detected by adopting a pure mechanical structure, and the failure risk of electronic elements in a severe environment is avoided; double heat dissipation modes are switched adaptively, air cooling and energy saving are achieved in a clean environment, circulating dust prevention is achieved in a dust environment, and electric appliance elements are adsorbed and fixed by means of contraction negative pressure of a heat dissipation system working medium. The independent negative pressure cavity design can stably conduct adsorption pressure, the fixing stability is guaranteed, the air bag is driven to expand through heat of the flexible copper pipe, and a pressurization environment is generated by combining a closed space formed by closing of the sealing baffle; the air pressure difference inside and outside the airtight ring is constructed through the constant-pressure pipe, the airtight ring is pushed to press the electric appliance element to the installation position, and the problem that traditional rigid fixation is loose is thoroughly solved.

Description

Technical Field

[0001] This invention relates to the field of server cooling technology, specifically to a server cooling device and its usage method. Background Technology

[0002] During server operation, core electrical components continuously generate a large amount of heat. If this heat cannot be dissipated in time, the component temperature will rise, affecting server stability, reducing component lifespan, and even causing malfunctions and data loss. Therefore, cooling devices are a critical component for servers. Currently, server cooling devices mainly use air cooling, liquid cooling, or a hybrid air-liquid cooling system, but there are still many issues that need improvement in practical applications.

[0003] In the process of developing existing server cooling devices, the inventors discovered the following problems with the existing technology: 1. Insufficient flexibility in switching heat dissipation modes. Most devices use a single heat dissipation mode or require manual intervention to switch modes, and cannot adaptively adjust according to the concentration of dust in the environment. In dusty industrial environments, the filter components of the air-cooled mode are prone to rapid clogging, resulting in a sharp drop in heat dissipation efficiency. The liquid-cooled mode has high energy consumption during long-term operation, making it difficult to balance energy saving and adaptability to different environments. 2. Poor reliability of core electrical components. Existing devices mostly use rigid connectors such as bolts to fix electrical components. Vibrations generated during server operation or bumps during transportation can easily cause the connectors to loosen, damaging the fit between the electrical components and the heat dissipation structure, thereby reducing the heat dissipation effect. If an additional drive-type fixing mechanism is added, it will increase the complexity of the device and energy consumption. 3. Poor dustproof sealing. The sealing structure of the air inlet and outlet in the air-cooled mode is rudimentary. Dust can easily enter the inside of the chassis through gaps and adhere to the surface of electrical components and heat dissipation components, which not only further reduces heat dissipation efficiency but also accelerates component aging and shortens the overall service life of the server.

[0004] In view of this, we propose a server cooling device and its usage method. Summary of the Invention

[0005] The purpose of this invention is to provide a server cooling device and its usage method, to solve the problems mentioned in the background art, such as poor adaptability of heat dissipation modes, insufficient reliability of core electrical components, poor coordination between heat dissipation and fixing systems, and inadequate dustproof sealing. To achieve the above objective, this invention provides the following technical solution: a server cooling device, comprising a drawer-shaped server chassis, wherein an air inlet is provided on the left side of the chassis and an air outlet is provided on the right side, and a vortex fan is installed inside the air inlet;

[0006] The air inlet is fitted with a horizontal sliding guide rail, the dust filter membrane is embedded in the guide rail to form a sliding fit, and the pressure sensor is fixed to the inner wall of the chassis, with its piston end in direct contact with the dust filter membrane.

[0007] The air inlet and air outlet are equipped with electric telescopic rods, gear and rack transmission mechanisms, rotating shafts and sealing baffles. The electric telescopic rods are electrically connected to the pressure sensors. The gear is fitted onto one end of the rotating shaft, and the rack is fixed to the output end of the electric telescopic rod. The rotating shaft and sealing baffles are rotated through the meshing of the gear and rack.

[0008] The chassis is equipped with a cold plate, which is laid horizontally and fixed to the bottom of the chassis. The core electrical components are assembled against the top surface of the cold plate.

[0009] A finned heat exchanger is fixed to the bottom of the chassis. The cold plate and the heat exchanger are connected by a flexible copper tube to form a closed loop. A micro gear pump is installed in the corner of the chassis to provide energy for the circulation of the working fluid in the pipeline.

[0010] Preferably, a hollow rubber seat is provided at the electrical component mounting position on the top surface of the cold plate. The rubber seat has an elastic sealing membrane inside, which divides the interior of the rubber seat into an independent negative pressure chamber and an external bonding chamber. The negative pressure chamber is connected to a copper air duct to form a closed negative pressure channel, and the external bonding chamber is bonded to the base of the electrical component.

[0011] One end of the copper air guide tube is connected to the negative pressure chamber of the rubber seat, and the other end is connected to the copper tube of the heat exchanger.

[0012] Preferably, the flexible copper tube is provided with an inflatable air bladder on the tube body located inside the chassis;

[0013] An airtight frame is fitted around the mounting position of the electrical components on the top surface of the cold plate, and an airtight ring is inlaid around the outer ring of the base of the electrical components. The airtight ring and the airtight frame are fitted together for sealing.

[0014] The cold plate inside the airtight frame is equipped with a constant pressure pipe that maintains air pressure balance with the outside.

[0015] Preferably, the pressure sensor is provided with a dustproof protective cover on its outer side.

[0016] Preferably, the sealing baffle is provided with an elastic sealing gasket at its edge.

[0017] Preferably, the cold plate is fixed to the bottom of the chassis via a detachable connector.

[0018] Preferably, the outer surface of the copper air duct is fitted with a heat insulation sleeve, and the heat insulation sleeve has a notch for installing the expansion airbag.

[0019] A method for using a server cooling device includes the following steps:

[0020] S1. The vortex fan generates airflow, which enters through the air inlet on the left side of the chassis. After being initially filtered by the dust filter membrane, it flows over the core electrical components and the surface of the cold plate, carrying away the heat generated by the operation of the electrical components.

[0021] After absorbing heat, the airflow is discharged from the right side of the chassis through the "left in, right out" air duct, achieving air cooling of the electrical components;

[0022] Under this condition, the dust concentration is low, there is no obvious accumulation of dust on the filter membrane, and no force is generated sufficient to push the piston of the pressure sensor. Therefore, the pressure sensor is not triggered, and the sealing baffle remains open.

[0023] S2. As dust accumulates on the surface of the dust filter membrane, the weight of the dust filter membrane increases and it slides along the guide rail, directly pushing the piston of the pressure sensor to move and triggering the pressure sensor. The pressure sensor outputs an electrical signal to control the electric telescopic rod to move. The electric telescopic rod drives the rack to move linearly, and through the meshing of the gear and rack, it drives the rotating shaft to rotate, which in turn drives the sealing baffles at the air inlet and outlet to rotate and close synchronously, completing the switch from air-cooling mode to internal circulation heat dissipation mode. At the same time, the vortex fan stops running and the micro gear pump starts.

[0024] S3. The micro gear pump drives the circulation of the working fluid in the pipeline. When the working fluid flows through the cold plate, it absorbs the heat generated by the electrical components and then flows along the flexible copper tube to the heat exchanger at the bottom of the chassis. The working fluid releases heat in the heat exchanger and, after cooling, flows back to the cold plate along the copper tube, forming a closed-loop internal circulation heat dissipation.

[0025] S4. The working fluid cools and contracts inside the heat exchanger, creating a negative pressure inside the copper tubes of the heat exchanger. This negative pressure is transmitted to the negative pressure chamber of the rubber seat through the copper air guide tube. After being stably conducted by the elastic sealing membrane, it generates an adsorption force on the electrical component base through the external bonding chamber, thereby achieving negative pressure adsorption and fixation of the electrical component.

[0026] S5. When the server is under high load, the temperature of the working fluid inside the flexible copper tube rises, and the heat is transferred to the expansion airbag, causing it to expand. Because the sealing baffle is closed, the inside of the chassis is a closed space. The expansion of the airbag compresses the space, creating a pressurized environment (high pressure outside the airtight ring). The constant pressure pipe inside the airtight frame keeps the inside of the airtight ring (the side of the electrical components) at normal pressure, forming a pressure difference between the inside and outside. This pressure difference pushes the airtight ring towards the electrical components, firmly pressing the electrical components into the installation position, achieving stable fixation.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0028] 1. Strong environmental adaptability and high reliability: The pure mechanical structure is used to detect dust concentration, avoiding the risk of electronic component failure in harsh environments; dual heat dissipation modes are adaptively switched, with air cooling for energy saving in clean environments and internal circulation for dust prevention in dusty environments, taking into account the needs of different working conditions.

[0029] 2. Negative pressure adsorption fixation, stability and energy saving: Relying on the negative pressure of the working fluid contraction of the heat dissipation system to adsorb and fix electrical components, no additional power source is required, and the energy utilization rate is high; the negative pressure chamber design of the rubber seat can stably transmit the adsorption pressure and ensure the fixation stability.

[0030] 3. Excellent compatibility with pressurized fixing: The flexible copper pipe of the internal circulation heat dissipation system drives the airbag to expand, and the closed space formed by the sealing baffle creates a pressurized environment; the constant pressure pipe creates a pressure difference between the inside and outside of the airtight ring, which pushes the airtight ring to press the electrical components toward the installation position. The pressure is stable and highly adaptable, completely solving the problem of loosening of traditional rigid fixing.

[0031] 4. Excellent dustproof effect and long service life: In dusty environments, the sealing baffle closes the air inlet and outlet, and together with the internal circulation closed structure and airtight ring seal, it completely blocks dust intrusion; reduces dust accumulation and loss of components, and extends the service life of the server. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0033] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0034] Figure 3 This is a schematic diagram of the three-dimensional structure inside the chassis of the present invention. Figure 1 ;

[0035] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0036] Figure 5 This is a schematic diagram of the three-dimensional structure inside the chassis of the present invention. Figure 2 ;

[0037] Figure 6 This is an exploded view of the air inlet, sealing baffle, and electric telescopic rod of the present invention;

[0038] Figure 7 For the present invention Figure 6 Enlarged view of point B in the middle;

[0039] Figure 8 This is a schematic diagram of the structure of the cold plate and heat exchanger of the present invention;

[0040] Figure 9 For the present invention Figure 8 Enlarged view of point C in the middle;

[0041] Figure 10 This is a three-dimensional structural cross-sectional view of the chassis, cold plate, and airtight frame of the present invention.

[0042] In the diagram: 1. Chassis; 2. Air inlet; 3. Air outlet; 4. Vortex fan; 5. Dust filter membrane; 6. Pressure sensor; 7. Electric telescopic rod; 8. Gear and rack transmission mechanism; 9. Shaft; 10. Sealing baffle; 11. Cold plate; 12. Heat exchanger; 13. Flexible copper tube; 14. Miniature gear pump; 15. Rubber seat; 16. Sealing membrane; 17. Negative pressure chamber; 18. External fitting chamber; 19. Copper air guide tube; 20. Inflatable airbag; 21. Airtight frame; 22. Airtight ring; 23. Constant pressure tube. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] Please see Figures 1 to 10 This invention provides a technical solution: a server cooling device, including a drawer-shaped server chassis 1. The drawer-shaped structure design facilitates the inspection, maintenance, and replacement of internal components and core electrical components, improving the ease of operation and maintenance. The chassis 1 has an air inlet 2 on the left and an air outlet 3 on the right. The symmetrical layout of the air inlets and outlets forms a smooth "left in, right out" airflow channel, ensuring efficient airflow within the chassis 1 and preventing local airflow stagnation. A vortex fan 4 is installed inside the air inlet 2. As the core power component of the air-cooled heat dissipation mode, the vortex fan 4 provides a stable and sufficient airflow, ensuring that the airflow quickly passes over the surface of the core electrical components and removes heat in a timely manner.

[0045] A horizontal sliding guide rail is installed on the inner side of the air inlet 2. The horizontal sliding guide rail is made of wear-resistant and low-friction coefficient material, which can provide stable guidance for the sliding of the dust filter membrane 5, while reducing wear during the sliding process and extending the service life of the component. The dust filter membrane 5 is embedded in the guide rail to form a sliding fit. This sliding fit structure allows the dust filter membrane 5 to be easily pulled out of the guide rail for cleaning or replacement, avoiding the dust filter membrane 5 from being blocked by long-term dust accumulation and affecting the ventilation effect. The pressure sensor 6 is fixed to the inner wall of the chassis 1, and its piston end is in direct contact with the dust filter membrane 5. The pressure sensor 6 can sense the weight change of the dust filter membrane 5 in real time. Through the direct contact between the piston end and the dust filter membrane 5, the accuracy of the weight signal transmission is ensured, providing a reliable signal basis for the subsequent switching of heat dissipation mode.

[0046] Electric telescopic rods 7, gear and rack transmission mechanisms 8, rotating shafts 9, and sealing baffles 10 are installed on both sides of the air inlet 2 and the air outlet 3. The electric telescopic rods 7 are electrically connected to the pressure sensor 6, forming a complete automatic control link to ensure that the actuators can be driven to move in time after the pressure sensor 6 is triggered. The gear is fitted on one end of the rotating shaft 9, and the rack is fixed to the output end of the electric telescopic rod 7. The rotating shaft 9 and the sealing baffle 10 are rotated through the meshing of the gear and rack. The gear and rack transmission mechanism 8 has the characteristics of precise transmission and high stability, which can ensure the accuracy of the rotation angle of the sealing baffle 10, realize the tight sealing or full opening of the air inlet and outlet, and ensure the reliability of switching between the two heat dissipation modes. At the same time, a sealing structure installation position is reserved at the assembly gap between the rotating shaft 9 and the chassis 1 to further improve the airtightness of the sealing baffle 10 after it is closed and avoid airflow leakage in the internal circulation heat dissipation mode.

[0047] A cold plate 11 is installed inside the chassis 1. The cold plate 11 is made of metal with a high thermal conductivity, which can quickly absorb the heat generated by the core electrical components. The cold plate 11 is laid horizontally and fixed to the bottom of the chassis 1. This laying method makes the cold plate 11 fit more tightly with the core electrical components, improving the heat conduction efficiency. The core electrical components are mounted on the top surface of the cold plate 11 to ensure that the heat generated by the electrical components can be directly and quickly transferred to the cold plate 11, avoiding the accumulation of heat on the surface of the electrical components.

[0048] A finned heat exchanger 12 is fixed to the bottom of the chassis 1. The finned structure increases the contact area between the heat exchanger 12 and the outside air, improves heat dissipation efficiency, and accelerates the dissipation of heat from the working fluid. The cold plate 11 and the heat exchanger 12 are connected by a flexible copper tube 13 to form a closed-loop pipeline. The flexible copper tube 13 has good flexibility and can adapt to the complex spatial layout inside the chassis 1, while facilitating the installation and debugging of the pipeline. A miniature gear pump 14 is installed in the corner of the chassis 1 to supply power for the circulation of the working fluid in the pipeline. The miniature gear pump 14 has the characteristics of small size, low noise, and stable power supply, which can ensure the continuous and stable circulation of the working fluid in the closed-loop pipeline and ensure the heat dissipation effect of the internal circulation heat dissipation mode.

[0049] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10As shown, a hollow rubber seat 15 is provided on the top surface of the cold plate 11 at the location where the electrical components are installed. The rubber seat 15 has good elasticity and sealing performance, which can buffer and protect the base of the electrical components, and at the same time prevent air leakage between the negative pressure chamber 17 and the external bonding chamber 18. An elastic sealing membrane 16 is provided inside the rubber seat 15. The elastic sealing membrane 16 can adapt to deformation under negative pressure, ensuring the sealing performance of the negative pressure chamber 17, and can stably transmit the negative pressure to the external bonding chamber 18. The sealing membrane 16 divides the interior of the rubber seat 15 into an independent negative pressure chamber 17 and an external bonding chamber 18. The negative pressure chamber 17 is connected to the copper air guide pipe 19 to form a closed negative pressure channel. The closed negative pressure channel can ensure that the negative pressure is not lost during transmission, ensuring the transmission efficiency of the negative pressure. The external bonding chamber 18 is bonded to the base of the electrical components. The bonding surface adopts a shape design adapted to the base of the electrical components to improve the tightness of the bonding and ensure that the adsorption force can be evenly applied to the base of the electrical components.

[0050] One end of the copper air guide tube 19 is connected to the negative pressure chamber 17 of the rubber seat 15, and the other end is matched with the copper tube of the heat exchanger 12. The copper air guide tube 19 has good thermal conductivity and sealing performance, which can quickly transmit the negative pressure generated in the copper tube of the heat exchanger 12, while avoiding negative pressure leakage. The joint adopts a sealed connection structure to further improve the airtightness of the connection part and ensure the stability of negative pressure transmission.

[0051] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, the flexible copper tube 13 is equipped with an expansion airbag 20 inside the casing 1. The expansion airbag 20 is made of a flexible material with high temperature resistance and good elasticity, which can adapt to the volume expansion and contraction caused by the temperature change of the working fluid, and at the same time has good sealing performance to avoid working fluid leakage. The expansion airbag 20 is positioned to avoid the bends of the pipeline, ensuring that the airbag is not obstructed by the pipeline layout when it expands.

[0052] An airtight frame 21 is fitted around the top surface of the cold plate 11 where electrical components are installed. The airtight frame 21 fits tightly against the top surface of the cold plate 11, forming a closed pressurized space to ensure that the pressure generated when the airbag expands can act on the airtight ring 22. The airtight ring 22 is inlaid on the outer ring of the electrical component base. The airtight ring 22 is made of elastic sealing material and can deform under the action of air pressure difference to further improve the sealing effect. The airtight ring 22 and the airtight frame 21 are matched and sealed. The two are precisely matched in size to ensure a tight fit and avoid pressure leakage under pressurized conditions.

[0053] The cold plate 11 inside the airtight frame 21 is equipped with a constant pressure pipe 23 to maintain air pressure balance with the outside. The constant pressure pipe 23 can adjust the air pressure inside the airtight ring 22 in real time to ensure that it always maintains a normal pressure state, thereby stabilizing the air pressure difference inside and outside the airtight ring 22 and ensuring the sealing effect of the airtight ring 22 on the electrical components. The constant pressure pipe 23 is equipped with a one-way ventilation structure to prevent external dust and impurities from entering the inside of the airtight ring 22 and affecting the normal operation of the electrical components.

[0054] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, the pressure sensor 6 is equipped with a dustproof protective cover on the outside. The dustproof protective cover is made of breathable material. Without affecting the normal operation of the pressure sensor 6, it can effectively block dust in the air from entering the interior of the pressure sensor 6, and prevent dust from adhering to the piston end or internal components of the sensor, thus affecting the detection accuracy and service life of the sensor.

[0055] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, the sealing baffle 10 has an elastic sealing gasket on its edge. The elastic sealing gasket is precisely matched with the edge of the air inlet and outlet. When the sealing baffle 10 is closed, the sealing gasket can fill the gap between the baffle and the air outlet 3, significantly improving the sealing effect and ensuring the sealing of the inside of the chassis 1 in the internal circulation heat dissipation mode, avoiding air leakage that would lead to a decrease in heat dissipation efficiency.

[0056] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, the cold plate 11 is fixed to the bottom of the chassis 1 by a detachable connector. The detachable connector adopts a standardized structural design, which facilitates the disassembly and replacement of the cold plate 11. When the cold plate 11 is damaged or needs maintenance, it can be quickly removed from the chassis 1, reducing maintenance costs and maintenance difficulty.

[0057] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10As shown, a heat-insulating sleeve is fitted on the outer surface of the copper air duct 19. The heat-insulating sleeve is made of a high-temperature resistant material with excellent heat insulation performance, which can effectively reduce the temperature loss inside the copper air duct 19 and ensure the stable formation of negative pressure. In addition, there is a notch on the heat-insulating sleeve for installing the expansion airbag 20. The size and shape of the notch are precisely matched with the expansion airbag 20, which not only ensures the normal installation and operation of the expansion airbag 20, but also ensures that the heat-insulating sleeve completely wraps around the copper air duct 19, thus ensuring the heat insulation effect.

[0058] A method for using a server cooling device includes the following steps:

[0059] S1. The vortex fan 4 generates airflow, which enters through the left air inlet 2 of the chassis 1. After initial filtration by the dust filter membrane 5, the dust filter membrane 5 effectively intercepts dust and impurities in the airflow, preventing dust from adhering to the surface of the core electrical components and affecting their heat dissipation performance and service life. The filtered airflow flows over the surface of the core electrical components and the cold plate 11, allowing for full contact with both surfaces and maximizing heat absorption. This removes the heat generated by the operation of the electrical components, achieving rapid heat transfer. The heat-absorbing airflow is then discharged from the right air outlet 3 of the chassis 1 along the "left in, right out" air duct. The discharged hot airflow quickly moves away from the device, preventing hot airflow backflow from affecting the heat dissipation effect and achieving air-cooled heat dissipation for the electrical components. Under this condition, the dust concentration is low, the dust filter membrane 5 has no significant accumulation, and there is no force sufficient to push the piston of the pressure sensor 6. The pressure sensor 6 is not triggered, and the sealing baffle 10 remains open, ensuring smooth airflow and stable operation of the air-cooled heat dissipation mode.

[0060] S2. As dust accumulates on the surface of the dust filter membrane 5, the weight of the dust filter membrane 5 gradually increases. When the weight of the accumulated dust reaches a preset threshold, the dust filter membrane 5 slides along the guide rail under the action of gravity, directly pushing the piston displacement of the pressure sensor 6 and triggering the pressure sensor 6. After the pressure sensor 6 is triggered, it immediately outputs an electrical signal and transmits it to the electric telescopic rod 7 to control the electric telescopic rod 7 to move. The electric telescopic rod 7 drives the rack to move linearly. Through the meshing transmission of the gear and rack, the linear motion is converted into the rotational motion of the rotating shaft 9, which in turn drives the sealing baffles 10 at the air inlet and outlet to rotate and close synchronously, completing the switch from the air-cooling mode to the internal circulation heat dissipation mode. This switching process does not require manual intervention, realizes automatic control, and improves the intelligence level of the device. At the same time, the vortex fan 4 stops running to avoid energy waste caused by the simultaneous operation of the air-cooling mode and the internal circulation mode. The micro gear pump 14 starts to provide power for the circulation of the working fluid in the internal circulation heat dissipation mode.

[0061] After the micro gear pump 14 starts, it drives the working fluid in the closed-loop pipeline to circulate continuously. When the working fluid flows through the cold plate 11, it can quickly absorb the heat conducted from the core electrical components by the cold plate 11, thereby cooling the cold plate 11. After absorbing heat, the working fluid flows along the flexible copper tube 13 to the heat exchanger 12 at the bottom of the chassis 1. During the flow, the heat carried by the working fluid will not be lost in large quantities. The working fluid exchanges heat fully with the outside air in the heat exchanger 12, releasing the heat it carries into the outside air. After being cooled, the working fluid flows back to the cold plate 11 along the copper tube, forming a closed-loop internal circulation heat dissipation. This circulation process can continuously cool the core electrical components, ensuring that the electrical components operate within a suitable temperature range.

[0062] S4. After the working fluid releases heat in the heat exchanger 12, its temperature decreases, causing it to cool and contract, resulting in a negative pressure inside the copper tubes of the heat exchanger 12. This negative pressure is quickly transmitted to the negative pressure chamber 17 of the rubber seat 15 through the copper air guide pipe 19. Since the negative pressure chamber 17, the air guide pipe, and the copper tubes of the heat exchanger 12 form a closed structure, the negative pressure is not lost during transmission. After the negative pressure is stably transmitted through the elastic sealing membrane 16, the sealing membrane 16 undergoes adaptive deformation, transmitting the negative pressure to the external bonding chamber 18. The external bonding chamber 18 generates a uniform adsorption force on the electrical component base, achieving negative pressure adsorption and fixation of the electrical component, preventing the electrical component from shifting due to vibration or other factors during device operation, and ensuring the stable operation of the electrical component.

[0063] S5. When the server is under high load, the heat generated by the core electrical components increases significantly, causing the temperature of the working fluid inside the flexible copper tube 13 to rise accordingly. The heat is quickly transferred to the expansion airbag 20, causing the airbag to expand due to heat. Since the sealing baffle 10 is in the closed state, a closed space is formed inside the chassis 1. The expanded airbag compresses the air in the closed space, generating a stable pressurized environment (high pressure outside the airtight ring 22). At the same time, the constant pressure pipe 23 inside the airtight frame 21 is continuously connected to the outside, so that the inside of the airtight ring 22 (the side of the electrical components) is always kept at a constant pressure, thereby forming a stable air pressure difference inside and outside the airtight ring 22. This air pressure difference pushes the airtight ring 22 towards the electrical components, firmly pressing the electrical components into the installation position, thereby further fixing the electrical components and ensuring that the electrical components can remain stable under high load and high vibration conditions. At the same time, it can also ensure the tight fit between the electrical components and the cold plate 11, improving the heat dissipation effect.

[0064] 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 preferred examples and are not intended to limit 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 claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A server cooling device, characterized in that, The chassis (1) includes a drawer-shaped enclosure, with an air inlet (2) on the left side and an air outlet (3) on the right side. A vortex fan (4) is installed inside the air inlet (2). The air inlet (2) is fitted with a horizontal sliding guide rail, the dust filter membrane (5) is embedded in the guide rail to form a sliding fit, and the pressure sensor (6) is fixed to the inner wall of the chassis (1), with its piston end directly contacting the dust filter membrane (5). The air inlet (2) and air outlet (3) are equipped with an electric telescopic rod (7), a gear and rack transmission mechanism (8), a rotating shaft (9) and a sealing baffle (10). The electric telescopic rod (7) is electrically connected to the pressure sensor (6). The gear is fitted onto one end of the rotating shaft (9), and the rack is fixed to the output end of the electric telescopic rod (7). The rotating shaft (9) and the sealing baffle (10) are rotated by the meshing of the gear and rack. A cold plate (11) is installed inside the chassis (1), and the cold plate (11) is laid horizontally and fixed to the bottom of the chassis (1). The core electrical components are assembled in contact with the top surface of the cold plate (11). A finned heat exchanger (12) is fixed to the bottom of the chassis (1). The cold plate (11) and the heat exchanger (12) are connected by a flexible copper tube (13) to form a closed loop. A micro gear pump (14) is installed in the corner of the chassis (1) to provide energy for the circulation of the working fluid in the pipeline.

2. The server cooling device according to claim 1, characterized in that: A hollow rubber seat (15) is provided at the electrical component mounting position on the top surface of the cold plate (11). An elastic sealing membrane (16) is provided inside the rubber seat (15). The sealing membrane (16) divides the interior of the rubber seat (15) into an independent negative pressure chamber (17) and an external fitting chamber (18). The negative pressure chamber (17) is connected to a copper air duct (19) to form a closed negative pressure channel. The external fitting chamber (18) is fitted to the electrical component base. One end of the copper air guide pipe (19) is connected to the negative pressure chamber (17) of the rubber seat (15), and the other end is connected to the copper tube of the heat exchanger (12).

3. The server cooling device according to claim 2, characterized in that: The flexible copper tube (13) is equipped with an inflatable airbag (20) on the tube body inside the chassis (1). An airtight frame (21) is fitted around the electrical component mounting position on the top surface of the cold plate (11), and an airtight ring (22) is inlaid around the base of the electrical component. The airtight ring (22) is adapted to seal the airtight frame (21). A constant pressure pipe (23) is provided on the cold plate (11) inside the airtight frame (21) to maintain air pressure balance with the outside.

4. The server cooling device according to claim 1, characterized in that: The pressure sensor (6) is provided with a dustproof protective cover on the outside.

5. A server cooling device according to claim 1, characterized in that: The sealing baffle (10) is provided with an elastic sealing gasket at its edge.

6. The server cooling device according to claim 1, characterized in that: The cold plate (11) is fixed to the bottom of the chassis (1) by a detachable connector.

7. A server cooling device according to claim 3, characterized in that: The outer surface of the copper air duct (19) is fitted with a heat insulation sleeve, and the heat insulation sleeve has a notch for installing the expansion airbag (20).

8. A method of using a server cooling device, comprising using the server cooling device as described in claim 3, characterized in that, Includes the following steps: S1. The vortex fan (4) generates airflow, which enters through the left air inlet (2) of the chassis (1). After being initially filtered by the dust filter membrane (5), it flows through the core electrical components and the surface of the cold plate (11), carrying away the heat generated by the operation of the electrical components. The airflow after absorbing heat is discharged from the right air outlet (3) of the chassis (1) along the "left in, right out" air duct, realizing the air cooling of the electrical components. Under this condition, the dust concentration is low, the dust filter membrane (5) does not accumulate significantly, and there is no force sufficient to push the piston of the pressure sensor (6). The pressure sensor (6) is not triggered, and the sealing baffle (10) remains open. S2. As dust accumulates on the surface of the dust filter membrane (5), the weight of the dust filter membrane (5) increases and it slides along the guide rail, directly pushing the piston displacement of the pressure sensor (6) and triggering the pressure sensor (6); the pressure sensor (6) outputs an electrical signal to control the electric telescopic rod (7) to move, the electric telescopic rod (7) drives the rack to move linearly, and drives the rotating shaft (9) to rotate through the gear and rack meshing transmission, thereby driving the sealing baffles (10) at the air inlet (2) and air outlet (3) to rotate and close synchronously, completing the switch from air cooling mode to internal circulation heat dissipation mode; at the same time, the vortex fan (4) stops running and the micro gear pump (14) starts; S3. The micro gear pump (14) drives the working fluid circulation in the pipeline. When the working fluid flows through the cold plate (11), it absorbs the heat generated by the electrical components and then flows along the flexible copper tube (13) to the heat exchanger (12) at the bottom of the chassis (1). The working fluid releases heat in the heat exchanger (12), and after cooling, it flows back to the cold plate (11) along the copper tube, forming a closed-loop internal circulation heat dissipation. S4. The working fluid cools and contracts in the heat exchanger (12), creating a negative pressure in the copper tube of the heat exchanger (12). This negative pressure is transmitted through the copper air guide tube (19) to the negative pressure chamber (17) of the rubber seat (15). After being stably conducted by the elastic sealing membrane (16), the external bonding chamber (18) generates an adsorption force on the electrical component base, thereby achieving negative pressure adsorption and fixation of the electrical component. S5. When the server is under high load, the temperature of the working fluid inside the flexible copper tube (13) rises, and the heat is transferred to the expansion airbag (20) to make it expand due to heat. Because the sealing baffle (10) is closed, the inside of the chassis (1) is a closed space. The expansion of the airbag compresses the space to create a pressurized environment (high pressure outside the airtight ring (22)). The constant pressure tube (23) in the airtight frame (21) keeps the inside of the airtight ring (22) (the side of the electrical components) at normal pressure, and a pressure difference is formed inside and outside. This pressure difference pushes the airtight ring (22) to move towards the electrical components, and firmly presses the electrical components into the installation position to achieve stable fixation.

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