Liquid-cooled server equipment and liquid cooling devices

Abstract

The present invention relates to the technical field of server liquid cooling, and discloses liquid-cooled server equipment and a liquid cooling device, including a cabinet, a circulation module installed on the outer surface of the cabinet, a plurality of mainboards installed inside the cabinet, a plurality of cold plates installed on each mainboard, the plurality of cold plates and the mainboards are interconnected through interconnecting pipes, a microchannel is opened inside each cold plate, and a spiral overturning component is provided inside the cold plate for preventing scale from clogging the microchannel and improving the mixing effect of the cooling medium. The present invention utilizes the interaction between the water-based cooling medium and the blades and the turbine sleeve to achieve effective suppression of scale formation, that is, when the water-based cooling medium flows through the blades, it is blocked and guided, resulting in an overturning tendency, and continuously impacts the inner wall of the microchannel under the action of the tangential force. This dynamic process effectively prevents the residue of scale, ensures the purity and fluidity of the cooling medium, and thus maintains efficient heat dissipation performance.

Description

Technical Field

[0001] The present invention relates to the technical field of server liquid cooling, and in particular to liquid cooling server equipment and a liquid cooling device. Background Art

[0002] A liquid-cooled server is a device that uses liquid cooling technology to reduce the server temperature. It indirectly contacts the heat dissipation components through a liquid medium, effectively absorbing and removing the generated heat, thereby maintaining the normal operation of the server.

[0003] However, the liquid cooling devices in existing liquid-cooled servers still face some challenges: First, water-based cooling media are widely popular due to their low cost, environmental friendliness and good thermal conductivity. However, water-based cooling media are prone to scale, which will cause increased thermal resistance. For this reason, current technology has adopted the dual measures of installing filters and regular cleaning. However, although the filter can intercept scale and other impurities to a certain extent, it itself has the potential risk of clogging. During the continuous operation of the liquid cooling system, once the filter is clogged, it will significantly reduce the circulation of the cooling medium, thereby weakening the heat dissipation efficiency. The server will generate a lot of heat energy during operation. If this heat cannot be discharged in time, the internal temperature of the server will rise sharply, directly threatening the safety of the hardware.

[0004] At the same time, regular cleaning of the filter and the entire liquid cooling system is also a complicated task, which requires considerable manpower, material resources and time costs. In addition, the operator must operate with caution during the cleaning process to ensure that no damage is caused to the system, and the cleaning timing must be accurately grasped. Otherwise, it will not only affect the server's operating time, but also cause new problems due to incomplete scale cleaning.

[0005] On the other hand, adding chemical substances such as scale inhibitors to water-based cooling media is also accompanied by many disadvantages. These additives tend to increase thermal resistance because the complex chemical composition they contain will change the physical and chemical properties of the cooling medium. Specifically, additives will cause the viscosity of the cooling medium to increase, thereby reducing its fluidity. In liquid cooling systems, the fluidity of the cooling medium is crucial for the effective transfer of heat. When the fluidity weakens, the heat transfer efficiency will also decrease. This is actually equivalent to increasing thermal resistance, further affecting the heat dissipation effect.

[0006] Secondly, water-based cooling media are prone to generate bubbles during the circulation process. These bubbles have a multi-faceted negative impact on the overall performance of the liquid cooling system. To address this problem, existing technologies usually add defoaming agents to inhibit the generation and accumulation of bubbles. However, due to the inevitable presence of numerous bends in the cold plate flow channel and pipeline design, these bends constitute a complex flow environment in fluid dynamics. Even with the addition of defoaming agents, it is difficult to completely eliminate the bubble retention phenomenon at the bends.

[0007] First, these trapped bubbles significantly disrupt the cooling medium's normal flow path, causing eddies and turbulence as the fluid flows through bends. This increases flow resistance and reduces the cooling medium's overall flow rate. This reduced flow rate directly impacts the efficiency of heat convection, preventing the timely and effective removal of heat generated by the server. This in turn causes localized temperature increases and exacerbates the formation of hotspots.

[0008] Secondly, the presence of bubbles also destroys the direct contact between the cooling medium and the cold plate, forming a layer of insulating air film, which actually constitutes an additional thermal resistance. This air film hinders the direct conduction of heat from the server components to the cooling medium, resulting in a significant reduction in heat dissipation efficiency. Especially under high-load operation, the heat generated by the server surges, and the insulating effect of the bubbles will further aggravate the accumulation of heat, making the system face a higher risk of thermal runaway.

[0009] In addition, bubbles may also accelerate the deterioration of the cooling medium. Due to the surface tension of bubbles, they easily absorb impurities and particles in the water, forming a dirt layer, which not only further increases the thermal resistance, but also promotes corrosion and microbial growth, posing a threat to the long-term reliability of the cooling medium and liquid cooling system.

[0010] To this end, the present invention proposes liquid cooling server equipment and a liquid cooling device. Summary of the Invention

[0011] The object of the present invention is to provide a liquid cooling server device and a liquid cooling device to solve the problems raised in the above background technology.

[0012] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: liquid-cooled server equipment and liquid cooling devices, including a cabinet, a circulation module installed on the outer surface of the cabinet, a number of mainboards installed inside the cabinet, a number of cold plates installed on each of the mainboards, the several cold plates and the mainboards are interconnected through interconnecting pipes, a microchannel is opened inside each of the cold plates, and a spiral turning assembly is provided inside the cold plate for preventing scale from clogging the microchannel and improving the mixing effect of the cooling medium. The spiral turning assembly includes a number of turbine sleeves, and the outer surface of each turbine sleeve is fixedly connected with blades arranged equidistantly in a ring shape.

[0013] The blades are used to pass the flow of the cooling medium and drive themselves to rotate through the impact force, so that the cooling medium has a tendency to continuously overturn, and further the cooling medium is evenly mixed in the microchannel, and the residual scale is reduced through its own overturning tendency.

[0014] The scroll sleeve is used to carry the rotational motion of the blades and assist the blades in exerting an overturning tendency on the cooling medium under the tendency of its own rotation.

[0015] Preferably, the spiral overturning assembly also includes a plurality of fixing rings, and every two of the fixing rings are arranged as a group. A group of the fixing rings is provided inside each cold plate, and every two of the fixing rings are respectively provided on both sides of the cold plate. The outer surface of each of the fixing rings is fixedly connected to a plurality of fixing rods, and the end of the fixing rod away from the fixing ring is fixedly connected to the inner wall of the cold plate. The plurality of turbine sleeves are rotatably connected to the outer surfaces of the plurality of fixing rings, and the turbine sleeves on the outer surface of each fixing ring are distributed in an annular equidistant arrangement, and each of the fixing rings is arranged in an annular equidistant arrangement and has a plurality of holes opened through it.

[0016] Preferably, the outer surface of each blade is symmetrically provided with linear grooves, the outer surface of each turbine sleeve is symmetrically provided with grooves, and a connecting piece is movably connected between every two grooves.

[0017] Preferably, the connecting parts each include two support seats and a curved head connecting rod, the two support seats are respectively rotatably connected to two grooves on the outer surface of the turbine sleeve, and the curved head connecting rod is rotatably connected between the two support seats.

[0018] Preferably, the bottom of the inter-connecting pipe at the bend is fixedly connected with a spiral guide ring.

[0019] Preferably, a fluid disturbance component is provided inside the microchannel, and the fluid disturbance component includes a plurality of micro-fins, and the plurality of micro-fins are fixedly connected to the inner wall of the microchannel, a plurality of diversion rings are fixedly connected to the inner wall of the microchannel, a plurality of confluence sleeves are fixedly connected to the inner wall of the microchannel, and a plurality of spoilers are fixedly connected to the inner wall of the microchannel.

[0020] Preferably, the micro-fins are all arranged in a spiral pattern, and the micro-fins are only arranged on straight lines within the micro-channel.

[0021] Preferably, the diverter rings are all arranged in the transition area between the bend and the straight line of the microchannel, and the diverter rings are close to the direction in which the cooling medium advances.

[0022] Preferably, the merging sleeves are arranged in the transition area between the bend and the straight line of the microchannel, and the merging sleeves are away from the diverter ring, and the cross-sectional area of ​​the merging sleeves gradually shrinks toward the side where the cooling medium advances.

[0023] Preferably, the spoilers are all arranged at the bends of the microchannels, and the spoilers are all arranged in a trapezoidal shape, and the spoilers are inclined toward the bending direction.

[0024] Preferably, the circulation module includes: a water pump, a liquid storage tank, and an input pipe and an output pipe.

[0025] Preferably, the mainboard includes at least one display core.

[0026] Preferably, coolant is stored in the liquid storage tank.

[0027] Preferably, the circulation module is electrically started and shut down by an external controller.

[0028] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention utilizes the interaction between the water-based cooling medium and the blades and turbine sleeves to effectively inhibit the formation of scale. That is, when the water-based cooling medium flows through the blades, it is blocked and guided, resulting in an overturning tendency, and continuously impacts the inner wall of the microchannel under the action of tangential force. This dynamic process effectively prevents the residue of scale, ensures the purity and fluidity of the cooling medium, thereby maintaining efficient heat dissipation performance. In addition, the good thermal conductivity of the water-based cooling medium ensures the stable operation of the server under high load, reduces energy consumption, and is in line with the concept of green energy saving.

[0029] Compared with the traditional liquid cooling system method of relying on filters and regular cleaning to deal with scale problems, the innovative mechanism of the present invention reduces maintenance costs and operational complexity. The filters in the traditional method have the risk of clogging and the cleaning process is cumbersome. This solution achieves self-cleaning of scale through structural design, without the need for frequent manual intervention, greatly improving the stability and reliability of the system.

[0030] Among them: during the rotation of the turbine sleeve and the blades, the connecting piece is driven to rotate around the fixed ring. This action expands the overturning area and further enhances the mixing and cleaning effect of the water-based cooling medium.

[0031] Among them: Since the multiple holes are set in multiple positions and do not move, the water-based cooling medium will lag when flowing through its own guiding effect. The multiple holes allow the cooling medium to form a more uniform flow field when flowing through, reducing the possibility of local overheating and hot spot formation, and providing a more stable operating environment for the server.

[0032] Among them: the blades and the straight grooves on their surfaces help guide the flow of the cooling medium and reduce the formation of turbulence and eddies. This design not only reduces flow resistance, but also improves the flow rate and heat dissipation efficiency of the cooling medium, allowing the server to maintain low temperature and stable operation even under high load.

[0033] Among them: fixing a spiral guide ring at the bottom of the bend of the interconnecting pipe can form a spiral fluid, effectively reducing the retention of bubbles and the formation of vortexes at the bend, which not only improves the flow efficiency of the cooling medium but also reduces the flow resistance. In particular, setting a spiral guide ring close to the cold plate can utilize higher kinetic energy to reduce energy loss and further improve the heat dissipation effect.

[0034] While achieving the above-mentioned beneficial effects, the present invention also has the following advantages: First, since the water-based cooling medium passes through the spiral overturning component during the flow process and is fully mixed under the dual trends of spiral and overturning, the cooling medium can enter the microchannel evenly, realizing effective heat transfer and uniform distribution.

[0035] Secondly, the water-based cooling medium first contacts the blades. This design effectively reduces the impact and vibration on the cold plate and extends the service life of the server hardware.

[0036] Thirdly, since the spiral overturning components are set on both sides of the cold plate, the spiral overturning components on the other side can simultaneously reduce the scale formation in the interconnecting pipe. This double-sided design achieves comprehensive suppression of scale and further improves the purity and fluidity of the cooling medium.

[0037] 2. In response to the problem that water-based cooling media are prone to generate bubbles during the circulation process, the fluid disturbance component of the present invention achieves effective control of bubble generation and retention. The fluid disturbance component not only promotes the uniform flow of the cooling medium, but also significantly improves the heat dissipation efficiency. Specifically, the diverter ring ensures the uniform distribution of the cooling medium before flowing through the bend, the spoiler effectively breaks the retention state of the bubbles, and the converging sleeve accelerates the discharge of bubbles through its special design, thereby reducing the impact of bubbles on heat dissipation performance. The combined effect of these improvements significantly improves the overall performance of the liquid cooling system, reduces flow resistance, improves the convection transfer efficiency of heat, and effectively prevents local temperature rise and the formation of hot spots.

[0038] Compared with the existing method of relying on defoaming agents to inhibit bubble generation and accumulation, the present invention introduces a series of innovative structures to achieve effective control of bubble generation and retention without the need to add additional chemicals. This not only reduces maintenance costs and operational complexity, but also avoids the potential impact of chemicals on the cooling medium and liquid cooling system. At the same time, the structural design of the present invention is more sophisticated and efficient, and can better adapt to complex flow environments, providing the server with more stable, safe and efficient heat dissipation performance. In summary, this solution has shown significant advantages and potential in solving the problem of bubbles in water-based cooling media.

[0039] ‌In which: In the microchannel, the micro-fins are arranged in a spiral and are only set in straight lines. It utilizes the fluid dynamics effect generated by the spiral arrangement to promote the uniform mixing and flow of the cooling medium. At the same time, because the micro-fins only exist in straight lines, flow interference generated at bends is avoided, further reducing the retention of bubbles and the formation of vortices.

[0040] Among them: the converging sleeves are all arranged in the transition area between the bend and the straight line of the microchannel, and away from the diverter ring. The special feature is that the cross-sectional area gradually shrinks towards the side where the cooling medium moves forward, that is, the big end enters and the small end exits. This design allows the cooling medium to be subjected to a gradually enhanced guiding effect when flowing through the converging sleeve, accelerates the discharge of bubbles and the convergence of fluids, and reduces the negative impact of bubbles on heat dissipation performance.

[0041] Among them: at the bends of the microchannel, the spoilers are all set to be trapezoidal and inclined toward the bend direction. The trapezoidal design allows the spoilers to divide the fluid without generating excessive flow resistance, ensuring smooth flow of the fluid, while the inclined direction design enables the spoilers to better guide the fluid through the bends, reducing the retention of bubbles and the formation of vortices. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a front perspective schematic diagram of the main structure of the present invention.

[0043] Figure 2 It is a rear perspective schematic diagram of the main structure of the present invention.

[0044] Figure 3 It is a partial three-dimensional schematic diagram of the main structure of the present invention.

[0045] Figure 4 It is a three-dimensional schematic diagram of the mainboard of the present invention.

[0046] Figure 5 It is a partially cutaway perspective diagram of the spiral overturning of the present invention.

[0047] Figure 6 For the present invention Figure 5 Enlarged three-dimensional schematic diagram of the structure at point A in the middle.

[0048] Figure 7 For the present invention Figure 5 Enlarged three-dimensional schematic diagram of the structure at point B in the middle.

[0049] Figure 8 For the present invention Figure 5 Enlarged three-dimensional schematic diagram of the structure at point C in the middle.

[0050] Figure 9 It is a schematic sectional perspective view of the fluid disturbance component of the present invention.

[0051] Figure 10 For the present invention Figure 9 Enlarged three-dimensional schematic diagram of the structure at point D in the middle.

[0052] In the figure: 11, cabinet; 12, circulation module; 13, main board; 14, cold plate; 141, interconnecting pipe; 142, microchannel.

[0053] 2. Spiral overturning assembly; 21. Spiral guide ring; 22. Fixed ring; 23. Turbine sleeve; 24. Blade; 25. Linear groove; 26. Multi-hole; 27. Connector.

[0054] 3. Fluid disturbance component; 31. Micro fins; 32. Diverter ring; 33. Merging sleeve; 34. Spoiler. DETAILED DESCRIPTION

[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0056] It should be noted that the circulation module 12 includes: a water pump, a storage tank, an input pipe and an output pipe. The water pump is fixedly connected to the outer surface of the cabinet 11, the liquid storage tank is installed above the water pump, the output pipe is fixedly connected between the output end of the water pump and the cold plate 14 directly in front of the cabinet 11, and the input pipe is fixedly connected between the input end of the water pump and the cold plate 14 directly behind the cabinet 11. Coolant is stored in the liquid storage tank, and the circulation module 12 is electrically controlled to start and stop by an external controller.

[0057] The structure and working principle of the circulation module 12 belong to the prior art and will not be described in detail later.

[0058] Example 1, please refer to Figures 1 to 7 As shown, the liquid-cooled server equipment and the liquid cooling device include a cabinet 11, a circulation module 12 is installed on the outer surface of the cabinet 11, a number of main boards 13 are installed inside the cabinet 11, a number of cold plates 14 are installed on each main board 13, the several cold plates 14 and the main boards 13 are interconnected through interconnecting pipes 141, a microchannel 142 is opened inside each cold plate 14, and a spiral turning assembly 2 is provided inside the cold plate 14 for preventing scale from clogging the microchannel 142 and improving the mixing effect of the cooling medium. The spiral turning assembly 2 includes a number of vortex sleeves 23, and the outer surface of each vortex sleeve 23 is fixedly connected with blades 24 arranged in an annular shape and at equal intervals.

[0059] The blades 24 are used to pass the flow of the cooling medium and drive themselves to rotate through the impact force, so that the cooling medium has a tendency to continuously overturn, and further makes the cooling medium evenly mixed in the microchannel 142, and reduces the residual scale through its own overturning tendency.

[0060] The scroll sleeve 23 is used to carry the rotational motion of the blades 24 and assist the blades 24 in exerting an overturning tendency on the cooling medium under the tendency of its own rotation.

[0061] Please refer to Figures 6 to 8 As shown, the spiral overturning assembly 2 also includes several fixing rings 22, every two fixing rings 22 are arranged as a group, each cold plate 14 is provided with a group of fixing rings 22, and every two fixing rings 22 are respectively arranged on both sides of the cold plate 14, the outer surface of each fixing ring 22 is fixedly connected to several fixing rods, and the end of the fixing rod away from the fixing ring 22 is fixedly connected to the inner wall of the cold plate 14, and several scroll sleeves 23 are rotatably connected to the outer surfaces of the several fixing rings 22, and the scroll sleeves 23 on the outer surface of each fixing ring 22 are distributed in an annular equidistant arrangement, the outer surface of each blade 24 is symmetrically provided with straight grooves 25, each fixing ring 22 is arranged in an annular equidistant arrangement and is penetrated by a plurality of holes 26, the outer surface of each scroll sleeve 23 is symmetrically provided with grooves, and a connecting piece 27 is movably connected between every two grooves, and the bottom of the bending part of the interconnecting pipe 141 is fixedly connected to the spiral guide ring 21.

[0062] It should be noted that the connecting parts 27 include two support seats and a curved head connecting rod. The two support seats are respectively rotatably connected to the two grooves on the outer surface of the turbine sleeve 23. The curved head connecting rods are rotatably connected between the two support seats. The main board 13 includes at least one display core.

[0063] Specifically, the operator starts the circulation module 12 electrically controlled by the external controller. At this time, the water pump starts under the instruction of the controller, and it draws coolant from the liquid storage tank. The coolant stored in the liquid storage tank provides the necessary medium for the entire cooling process. The water pump transports the coolant to the cold plate 14 through the output pipe.

[0064] When the coolant enters the cold plate 14, it will first pass through the guidance of the spiral guide ring 21 fixedly connected to the bottom of the bend of the interconnecting tube 141. According to the principles of fluid mechanics, the spiral shape of the spiral guide ring 21 changes the flow direction of the coolant, forming a spiral fluid. The spiral fluid has unique flow characteristics, that is, it contains axial flow and circumferential rotational flow components.

[0065] The spiral fluid then impacts the surface of the blade 24. Under the tangential force and the tendency of the spiral fluid to rotate itself, a torque is generated on the blade 24. When the tangential velocity component of the spiral fluid contacts the surface of the blade 24, according to Newton's second law, the spiral fluid generates a tangential force. This tangential force causes the blade 24 to rotate around its central axis. Since the blade 24 is fixedly connected to the outer surface of the vortex sleeve 23, the rotation of the blade 24 drives the vortex sleeve 23 to rotate synchronously on the fixed ring 22.

[0066] Every two volutes 23 are connected by a connector 27. When one volute 23 rotates, the remaining volutes 23 will also rotate synchronously through the connecting action of the connector 27. During the rotation of the volute 23, the connector 27 will be affected by the torque and force transmitted from the adjacent volute 23. Due to the rotatable connection structure of the connector 27, it can effectively transmit such force and torque, making the rotation of multiple volutes 23 more coordinated and consistent. This coordinated rotation will produce a larger range of disturbance effects on the surrounding coolant, thereby helping to improve and expand the overturning tendency of the cooling medium.

[0067] When the blade 24 rotates, it will generate a force perpendicular to the surface of the blade 24 on the spiral fluid. According to the momentum theorem, this force will change the momentum direction of the fluid micro-clusters, so that the fluid obtains an upward or downward vertical velocity component on the basis of the original spiral flow, thereby generating an overturning trend. This overturning trend causes the coolant to continuously mix in the microchannel 142.

[0068] Secondly, when the coolant hits the blade 24, part of the coolant will diffuse to the surrounding under the action of the impact force, and part of it will be distributed on the surface of the fixed ring 22. Since the porous 26 does not move, this part of the fluid entering the porous 26 has hysteresis. This hysteresis will cause a speed difference between this part of the fluid and the surrounding fast-flowing fluid, thereby further disrupting the flow state of the fluid and helping to expand the overturning effect of the cooling medium.

[0069] The linear grooves 25 on the surface of the blades 24 can also change the flow path of the coolant after it hits the blades 24. When the coolant hits the blades 24, part of the coolant will flow along the shape of the linear grooves 25, which will form a more complex flow field structure around the blades 24. This complex flow field structure will enhance the mixing effect of the coolant and further increase the overturning tendency.

[0070] When a fluid with an overturning tendency flows in the microchannel 142, it plays an important role in reducing scale. The formation of scale is often due to the gradual deposition of impurities in the water on the heated surface. The overturned fluid can flush away the impurity particles that may be deposited on the inner wall of the microchannel 142 through the scouring effect of the tangential force. This tangential force is like a brush, constantly cleaning the inner wall surface, preventing the deposition of impurities, and thus reducing the formation of scale.

[0071] Furthermore, when the coolant impacts the blades 24, in addition to producing the aforementioned cooling and scale-reducing effects, it also reduces vibration. From a dynamic perspective, the impact of the coolant generates an impact force, which the blades 24 and their associated structures absorb and disperse during rotation. According to the law of conservation of energy, the energy of the impact force is converted into other forms of energy, such as rotational kinetic energy and thermal energy, of the blades 24 and their connecting structures. This reduces vibration caused by the impact force, improves the stability of the entire spiral overturning assembly 2, and further reduces the negative impact of vibration on the underlying mainboard 13.

[0072] Finally, after the coolant has undergone the above series of flows and actions in the cold plate 14, it will be transported to another cold plate 14 through the interconnecting pipe 141 to continue heat exchange and the above various action processes. Finally, the coolant returns to the water pump again through the input pipe, completing a circulation process. During this circulation process, the coolant continuously absorbs the heat generated by the motherboard 13, thereby cooling the motherboard 13 and ensuring the normal operation of the liquid-cooled server equipment.

[0073] Example 2: Based on Example 1, please refer to Figure 9 and Figure 10 As shown, a fluid disturbance component 3 is provided inside the microchannel 142, and the fluid disturbance component 3 includes a plurality of micro-fins 31, and the plurality of micro-fins 31 are fixedly connected to the inner wall of the microchannel 142, a plurality of diverter rings 32 are fixedly connected to the inner wall of the microchannel 142, a plurality of confluence sleeves 33 are fixedly connected to the inner wall of the microchannel 142, and a plurality of spoilers 34 are fixedly connected to the inner wall of the microchannel 142.

[0074] It should be noted that the micro-fins 31 are all arranged in a spiral arrangement, and the micro-fins 31 are only arranged at the straight line in the microchannel 142. The diverter rings 32 are all arranged in the transition area between the bend and the straight line of the microchannel 142, and the diverter rings 32 are close to the direction of advance of the cooling medium. The merging sleeves 33 are all arranged in the transition area between the bend and the straight line of the microchannel 142, and the merging sleeves 33 are away from the diverter rings 32. At the same time, the cross-sectional area of ​​the merging sleeves 33 gradually shrinks toward the side where the cooling medium advances. The spoilers 34 are all arranged at the bend of the microchannel 142, and the spoilers 34 are all set to be trapezoidal, and the spoilers 34 are inclined toward the bending direction.

[0075] Specifically, based on the workflow of Example 1, the coolant enters the microchannel 142 inside the cold plate 14 under the guidance of the spiral overturning component 2 to cool the main board 13. When the coolant flows in the microchannel 142, it will first contact the micro-fins 31, and the micro-fins 31 are spirally arranged and located in a straight line within the microchannel 142. From the perspective of heat exchange, the spirally arranged micro-fins 31 increase the contact area between the coolant and the inner wall of the microchannel 142. According to Fourier's law, the increase in contact area helps to improve the heat conduction efficiency. In terms of fluid mechanics, the presence of the micro-fins 31 will disturb the flow of the coolant. This disturbance causes the coolant to form more tiny vortices during the flow process. According to the principle of energy dissipation, these tiny vortices help to break the laminar boundary layer of the coolant, thereby enhancing the heat transfer process.

[0076] As the coolant flows, it reaches the transition area between the bend and the straight line of the microchannel 142, and first encounters the diverter ring 32. The diverter ring 32 is close to the direction of the cooling medium, and its function is to divert the coolant. When the coolant flows through the diverter ring 32, due to the guiding effect of the diverter ring 32, the coolant will be divided into different streams. This process can be understood from the continuity equation of the fluid, that is, the diverter ring 32 changes the flow path of the coolant, so that the originally more concentrated flow beam is dispersed, which helps to carry out the fluid mechanics process more evenly at the bend later.

[0077] Next, the coolant reaches the bend of the microchannel 142 and interacts with the spoiler 34, which is set in a trapezoidal shape and tilted in the bend direction. From the perspective of fluid mechanics, when the coolant flows through the spoiler 34, due to the inclined surface of the spoiler 34, the coolant will be subjected to a force perpendicular to the inclined surface. According to Newton's second law, this force perpendicular to the inclined surface will change the flow direction of the coolant, causing the coolant to produce a turbulent flow phenomenon at the bend. The generation of turbulence helps to break the stable flow field structure that may be formed at the bend and avoid the generation of bubbles due to uneven flow field. At the same time, the trapezoidal shape of the spoiler 34 causes the flow velocity of the coolant to change at different positions when it flows through. The coolant flow velocity near the trapezoidal hypotenuse is faster, while the coolant flow velocity near the trapezoidal base is relatively slow. This flow velocity difference further enhances the turbulence effect.

[0078] On the other side of the bend, the merging sleeve 33 is located in the transition area between the bend and the straight line of the microchannel 142 and is away from the diverter ring 32. The cross-sectional area of ​​the merging sleeve 33 gradually shrinks toward the side where the cooling medium advances, and the main function of the merging sleeve 33 is to converge. After the coolant passes through the turbulence of the spoiler 34, the coolant of different streams converges again at the merging sleeve 33. From the principle of fluid mechanics, the merging sleeve 33 with a gradually shrinking cross-sectional area will increase the flow rate of the coolant. According to Bernoulli's principle, in the steady flow of incompressible fluid, the increase in flow rate will lead to a decrease in pressure. This change in pressure helps to discharge the bubbles present at the bend.

[0079] Assuming that there are bubbles at the bend, the pressure decreases due to the increase in flow rate at the merging sleeve 33, and the coolant pressure around the bubble will be greater than the pressure inside the bubble. According to the relationship between pressure difference and force, this pressure difference will generate a force pointing to the inside of the bubble, causing the bubble to be compressed and carried out of the bend with the flow of coolant. At the same time, the converging effect of the merging sleeve 33 enables the coolant to re-form a more stable flow field after passing through the bend, avoiding residual bubbles due to the complex flow at the bend.

[0080] Through a series of processes such as diversion by the diverter ring 32, disturbance by the spoiler 34 and convergence by the converging sleeve 33, bubbles are effectively prevented from existing in the microchannel 142, ensuring that the coolant can efficiently cool the mainboard 13 and ensure the stable operation of the entire liquid cooling device.

[0081] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0082] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A liquid cooling server device and a liquid cooling device, comprising a cabinet (11), wherein a circulation module (12) is installed on the outer surface of the cabinet (11), a plurality of mainboards (13) are installed inside the cabinet (11), a plurality of cold plates (14) are installed on each mainboard (13), the plurality of cold plates (14) and the mainboards (13) are interconnected through interconnecting pipes (141), and a microchannel (142) is opened inside each cold plate (14), characterized in that: A spiral overturning assembly (2) is provided inside the cold plate (14) for preventing scale from clogging the microchannel (142) and improving the mixing effect of the cooling medium. The spiral overturning assembly (2) includes a plurality of scroll sleeves (23). The outer surface of each scroll sleeve (23) is fixedly connected with blades (24) arranged in an annular manner and at equal intervals. The blades (24) are used to pass the flow of the cooling medium and drive themselves to rotate through the impact force, so that the cooling medium has a tendency to continuously overturn, and further the cooling medium is uniformly mixed in the microchannel (142), and the residual scale is reduced through the overturning tendency of the blades themselves; The vortex sleeve (23) is used to carry the rotational movement of the blade (24) and assist the blade (24) in exerting an overturning tendency on the cooling medium under the tendency of its own rotation; The spiral overturning assembly (2) further comprises a plurality of fixing rings (22), wherein each two fixing rings (22) are arranged as a group, a group of fixing rings (22) is arranged inside each cold plate (14), and each two fixing rings (22) are respectively arranged on both sides of the cold plate (14), the outer surface of each fixing ring (22) is fixedly connected to a plurality of fixing rods, and one end of the fixing rod away from the fixing ring (22) is fixedly connected to the inner wall of the cold plate (14), a plurality of vortex sleeves (23) are rotatably connected to the outer surfaces of the plurality of fixing rings (22), and the vortex sleeves (23) on the outer surface of each fixing ring (22) are distributed in an annular equidistant arrangement, and each fixing ring (22) is provided with a plurality of multi-holes (26) arranged in an annular equidistant arrangement; The outer surface of each blade (24) is symmetrically provided with a linear groove (25), the outer surface of each vortex sleeve (23) is symmetrically provided with a groove, and a connecting piece (27) is movably connected between each two grooves.

2. The liquid cooling server equipment and liquid cooling device according to claim 1, characterized in that: The connecting members (27) each include two support seats and a curved head connecting rod, the two support seats are respectively rotatably connected to two grooves on the outer surface of the turbine sleeve (23), and the curved head connecting rod is rotatably connected between the two support seats.

3. The liquid cooling server equipment and liquid cooling device according to claim 1, characterized in that: The bottom of the bend of the interconnecting pipe (141) is fixedly connected with a spiral guide ring (21).

4. The liquid cooling server equipment and liquid cooling device according to claim 1, characterized in that: A fluid disturbance component (3) is provided inside the microchannel (142), and the fluid disturbance component (3) includes a plurality of microfins (31), and the plurality of microfins (31) are fixedly connected to the inner wall of the microchannel (142), a plurality of diversion rings (32) are fixedly connected to the inner wall of the microchannel (142), a plurality of confluence sleeves (33) are fixedly connected to the inner wall of the microchannel (142), and a plurality of spoilers (34) are fixedly connected to the inner wall of the microchannel (142).

5. The liquid cooling server equipment and liquid cooling device according to claim 4, characterized in that: The micro-fins (31) are all arranged in a spiral pattern, and the micro-fins (31) are only arranged on straight lines within the micro-channel (142).

6. The liquid cooling server equipment and liquid cooling device according to claim 4, characterized in that: The diverter rings (32) are all arranged in the transition area between the bend and the straight line of the microchannel (142), and the diverter rings (32) are close to the direction in which the cooling medium advances.

7. The liquid cooling server equipment and liquid cooling device according to claim 4, characterized in that: The merging sleeves (33) are all arranged in the transition area between the bend and the straight line of the microchannel (142), and the merging sleeves (33) are away from the diverter ring (32). At the same time, the cross-sectional area of ​​the merging sleeves (33) gradually shrinks toward the side where the cooling medium advances.

8. The liquid cooling server equipment and liquid cooling device according to claim 4, characterized in that: The spoilers (34) are all arranged at the bends of the microchannels (142), and the spoilers (34) are all arranged in a trapezoidal shape, while the spoilers (34) are inclined toward the bending direction.

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