Liquid Cooling Heat Dissipation Device and Control Method

Abstract

The present application discloses a liquid cooling heat dissipation device and a control method, relating to the technical field of liquid cooling heat dissipation. The liquid cooling heat dissipation device includes a heat insulation cover, a heat conducting plate, a cooling structure and a control system. By arranging a plurality of heat conducting areas on the heat conducting plate, the partition management of heat is realized, and the pertinence and efficiency of heat dissipation are improved; a plurality of spraying areas are correspondingly arranged on the cooling structure, and each heat conducting area can be matched with at least one spraying area; a temperature detection mechanism is correspondingly arranged on each heat conducting area, which can monitor the temperature data of each heat conducting area in real time. By setting the control system to dynamically adjust and control the corresponding spraying area to spray an appropriate amount of coolant according to the temperature data of each heat conducting area, the technical problem that the uneven distribution of heat inside the server affects the overall efficiency of the heat dissipation system can be solved, the accurate and efficient cooling of the heat conducting area can be realized, and the accurate heat dissipation can be achieved according to the heat difference generated at different positions of the component to be cooled, and the technical effect of ensuring the uniformity of heat dissipation can be achieved.

Description

Technical Field

[0001] This application relates to the technical field of liquid cooling heat dissipation, and particularly to a liquid cooling heat dissipation device and a control method. Background Art

[0002] The current server spray cooling system mainly consists of a phase change heat transfer module and an atomization injection module to form a collaborative heat dissipation system. Its working principle is based on the physical property that a large amount of heat is absorbed during the phase change process of the cooling medium from liquid to gas on the heated surface, so as to achieve the heat energy dissipation of server components. In the related art, the server expands the effective spray coverage area through the distributed layout of array-type atomizing nozzles to enhance the overall cooling capacity. However, during the actual operation, due to the uneven distribution of heat inside the server, the heat difference is significant in different areas on the surface of the same object, with some areas having concentrated heat while others being relatively low. This uneven heat distribution affects the overall efficiency of the heat dissipation system. Summary of the Invention

[0003] This application provides a liquid cooling heat dissipation device and a control method to at least solve the problem that the uneven distribution of heat inside the server in the related art affects the overall efficiency of the heat dissipation system.

[0004] This application provides a liquid cooling heat dissipation device, including a heat insulation cover, a heat conduction plate, a cooling structure, and a control system; the heat insulation cover is adapted to cover the outer periphery of the component to be cooled; the heat conduction plate is arranged on the heat insulation cover and is in heat conduction cooperation with the component to be cooled; and the heat conduction plate is divided into multiple heat conduction areas; a temperature detection mechanism is correspondingly arranged on one heat conduction area; the cooling structure is arranged on the heat insulation cover; it includes multiple spray areas, at least one heat conduction area corresponds to one spray area, and the spray area is adapted to spray coolant towards the corresponding heat conduction area; the control system is communicatively connected to the temperature detection mechanism and the spray area, and controls the corresponding spray area to spray coolant according to the temperature data of the temperature detection mechanism.

[0005] This application also provides a control method for the above liquid cooling heat dissipation device, including the following steps:

[0006] Obtain the temperature data of the temperature detection mechanism;

[0007] Control the corresponding spray area to spray coolant according to the temperature data.

[0008] With this application, since a heat conduction plate is arranged to conduct heat with the component to be cooled, the heat generated by the component to be cooled during operation can be efficiently transferred to the heat conduction plate; by arranging a plurality of heat conduction areas on the heat conduction plate, each heat conduction area respectively undertakes the task of conducting heat from different positions of the component to be cooled, realizing the zonal management of heat, dissipating heat in a targeted manner, and improving the heat dissipation efficiency; and a plurality of spray areas are correspondingly arranged on the cooling structure, and each heat conduction area can be matched with at least one spray area; since a temperature detection mechanism is correspondingly arranged on each heat conduction area, the temperature data of each heat conduction area can be monitored in real time, and by setting a control system to dynamically adjust and control the corresponding spray area to spray an appropriate amount of coolant according to the temperature data of each heat conduction area, the technical problem in the related art that the heat distribution inside the server is uneven, affecting the overall efficiency of the heat dissipation system can be solved. It not only realizes the accurate and efficient cooling of the heat conduction area, but also achieves the accurate heat dissipation according to the heat difference generated by different positions of the component to be cooled, effectively ensuring the technical effect of uniform heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0010] Figure 1 FIG. is a schematic diagram of the overall structure of a liquid cooling heat dissipation device provided by an embodiment of the present application;

[0011] Figure 2 FIG. is a schematic exploded view of the liquid cooling heat dissipation device provided by an embodiment of the present application;

[0012] Figure 3 FIG. is a schematic diagram of the structure of a liquid storage tank provided by an embodiment of the present application;

[0013] Figure 4 FIG. is a schematic diagram of the structure of a cooling structure provided by an embodiment of the present application;

[0014] Figure 5 FIG. is a schematic diagram of the structure of a condenser provided by an embodiment of the present application;

[0015] Figure 6 FIG. is a schematic diagram of the structure of a sliding component and a cleaning cylinder provided by an embodiment of the present application;

[0016] Figure 7 FIG. is a general architecture diagram of a control system provided by an embodiment of the present application;

[0017] Figure 8 FIG. is a flowchart of a control method provided by an embodiment of the present application.

[0018] Among them, the above-mentioned attached drawings include the following reference numerals:

[0019] 1. Heat insulation cover; 2. Component to be cooled; 3. Heat conduction plate; 31. Heat conduction area; 32. Temperature detection mechanism; 4. Cooling structure; 41. Fixed frame; 42. Liquid storage bin; 421. Liquid supply area; 422. Spraying area; 423. Spraying holes; 43. First valve; 44. Pumping module; 45. Condenser; 451. Liquid inlet; 452. Inclined plate; 453. Filter screen; 454. Housing; 455. Condensing pipe; 46. Cleaning cylinder; 47. Sliding assembly; 471. Slide rail; 472. Slide block; 5. Support structure; 51. Support seat; 52. Connection assembly; 521. Rotating rod; 522. Sliding rod; 523. First magnetic attraction joint; 524. Second magnetic attraction joint. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the attached drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.

[0021] It should be noted that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. The terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. The terms "parallel", "perpendicular", "equal" include the described situations and situations similar to the described situations, and the range of the similar situations is within an acceptable deviation range, where the acceptable deviation range is determined by those of ordinary skill in the art considering the measurements being discussed and the errors associated with the measurements of specific quantities (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallel and approximate parallel, and the acceptable deviation range of approximate parallel can be, for example, within 5° deviation; "perpendicular" includes absolute perpendicular and approximate perpendicular, and the acceptable deviation range of approximate perpendicular can also be, for example, within 5° deviation. "Equal" includes absolute equality and approximate equality, and the acceptable deviation range of approximate equality can be, for example, that the difference between the two equal ones is less than or equal to 5% of either of them. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0022] In order to enable those skilled in the art of the present technology to better understand the solution of the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0023] Embodiments of the present application provide a liquid-cooled heat dissipation device and a control method. The device will be described in detail in combination with the structure and working principle of the liquid-cooled heat dissipation device.

[0024] According to an embodiment of the present invention, on the one hand, a liquid-cooled heat dissipation device is provided, such as Figure 1 and Figure 2As shown in the figure, it includes a heat shield 1, a heat conducting plate 3, a cooling structure 4 and a control system; the heat shield 1 is adapted to cover the outer periphery of the component to be cooled 2; the heat conducting plate 3 is arranged on the heat shield 1 and is in heat conduction cooperation with the component to be cooled 2; and the heat conducting plate 3 is divided into a plurality of heat conduction zones 31; a temperature detection mechanism 32 is correspondingly arranged on one heat conduction zone 31; the cooling structure 4 is arranged on the heat shield 1; it includes a plurality of spraying zones 422, at least one heat conduction zone 31 corresponds to one spraying zone 422, and the spraying zone 422 is adapted to spray a coolant onto the corresponding heat conduction zone 31; the control system is communicatively connected to the temperature detection mechanism 32 and the spraying zone 422, and controls the corresponding spraying zone 422 to spray the coolant according to the temperature data of the temperature detection mechanism 32.

[0025] Through the present application, since the heat conducting plate 3 is arranged in heat conduction cooperation with the component to be cooled 2, the heat generated by the component to be cooled 2 during operation can be efficiently transferred to the heat conducting plate 3; by arranging a plurality of heat conduction zones 31 on the heat conducting plate 3, each heat conduction zone 31 respectively undertakes the heat conduction task of different positions of the component to be cooled 2, realizing the zonal management of heat, dissipating heat in a targeted manner, and improving the heat dissipation efficiency; and a plurality of spraying zones 422 are correspondingly arranged on the cooling structure 4, and at least one spraying zone 422 can be matched with each heat conduction zone 31; since a temperature detection mechanism 32 is correspondingly arranged on each heat conduction zone 31, the temperature data of each heat conduction zone 31 can be monitored in real time, and by arranging a control system to dynamically adjust and control the corresponding spraying zone 422 to spray an appropriate amount of coolant according to the temperature data of each heat conduction zone 31, the technical problem in the related art that the heat distribution inside the server is uneven, affecting the overall efficiency of the heat dissipation system can be solved. It not only realizes the accurate and efficient cooling of the heat conduction zone 31, but also achieves the accurate heat dissipation according to the heat difference generated at different positions of the component to be cooled 2, effectively ensuring the uniformity of heat dissipation.

[0026] In a specific embodiment, a sealed connection method is adopted between the heat conducting plate 3, the heat shield 1 and the cooling structure 4, which can form a closed fluid isolation environment, ensuring that the coolant sprayed during the operation of the cooling structure 4 is completely restricted between the heat conducting plate 3, the heat shield 1 and the cooling structure 4, avoiding the contact of the component to be cooled 2 due to coolant leakage or splashing, thereby while ensuring the cooling efficiency, effectively preventing the component to be cooled 2 from suffering performance attenuation or structural damage due to accidental contact with the coolant, not only ensuring the stability of heat exchange, but also improving the operation reliability of the system through the physical isolation mechanism.

[0027] In a specific embodiment, the temperature detection mechanism 32 is a flexible film temperature sensor.

[0028] In a specific embodiment, the component to be cooled 2 can be an integrated circuit of a server.

[0029] In one embodiment, the cooling structure 4 includes a fixing frame 41 and a liquid storage chamber 42; the fixing frame 41 is arranged on the heat insulation cover 1; the liquid storage chamber 42 is fixed to the side of the fixing frame 41; as Figure 3 shown, the liquid storage chamber 42 includes a liquid supply area 421 and a spraying area 422 that communicate with each other. The spraying area 422 is arranged on the side close to the heat conducting plate 3, and a plurality of spraying holes 423 are provided on the side of the spraying area 422 close to the heat conducting plate 3; a first valve 43 is arranged between the spraying area 422 and the liquid supply area 421. The first valve 43 is communicatively connected with the control system, and the control system controls the valve opening of the corresponding first valve 43 according to the temperature data of the temperature detection mechanism 32.

[0030] By providing the fixing frame 41, it helps to fix the liquid storage chamber 42; by providing the liquid supply area 421 on the liquid storage chamber 42 to supply the cooling liquid to the spraying area 422, and spraying holes 423 are provided on the side of the spraying area 422 close to the heat conducting plate 3. After the cooling liquid in the liquid supply area 421 supplies the spraying area 422, the cooling liquid in the spraying area 422 is sprayed onto the heat conducting plate 3 through the spraying holes 423 to dissipate heat from the corresponding heat conducting area 31 on the heat conducting plate 3; and because a first valve 43 is arranged between the spraying area 422 and the liquid supply area 421, the control system calculates the required flow rate of the cooling liquid for the heat conducting area 31 according to the temperature data of the heat conducting area 31, and then controls the valve opening of the first valve 43 to ensure that the cooling liquid can be sprayed onto the heat conducting plate 3 at the most appropriate flow rate, which not only ensures the heat dissipation effect but also avoids waste of the cooling liquid; it not only improves the heat dissipation efficiency but also realizes the refined management of the heat dissipation process through intelligent control.

[0031] In a specific embodiment, the fixing frame 41 is made of a transparent material, which is convenient for observing the internal situation of the cooling structure 4.

[0032] In a specific embodiment, the side of the fixing frame 41 close to the heat conducting plate 3 is coated with a 2-μm-thick fluoropolymer as a hydrophobic layer; the side of the liquid storage chamber 42 close to the heat conducting plate 3 is coated with a 2-μm-thick fluoropolymer as a hydrophobic layer.

[0033] In a specific embodiment, there are two liquid storage chambers 42, and the two liquid storage chambers 42 are respectively arranged oppositely on both sides of the fixing frame 41 along the first direction. Specifically, each liquid storage chamber 42 is provided with one or more spraying areas 422, and the number of spraying areas 422 provided on each liquid storage chamber 42 is not limited. One, two or three spraying areas 422 can be provided on one liquid storage chamber 42; when there are multiple spraying areas 422, the multiple spraying areas 422 are arranged in sequence along the second direction, and the multiple spraying areas 422 are all connected to the liquid supply area 421. Each spraying area 422 is correspondingly provided with a first valve 43; specifically, each spraying area 422 is correspondingly arranged with a heat conducting area 31.

[0034] In a specific embodiment, the first valve 43 is a solenoid valve.

[0035] In a specific embodiment, a plurality of spray holes 423 are uniformly arranged on the side wall of the spray area 422. When the coolant is delivered into the spray area 422, it will be uniformly ejected outward in a stable and consistent state through these uniformly arranged spray holes 423, forming a large number of fine spray particles. The spray particles quickly absorb heat and evaporate when contacting the heat conducting plate 3, taking away a large amount of heat, so that the temperature of the corresponding heat conducting area 31 can be rapidly reduced.

[0036] In one embodiment, the cooling structure 4 includes a fixed frame 41 and a liquid storage chamber 42; the fixed frame 41 is arranged on the heat insulation cover 1; the liquid storage chamber 42 is fixed on the side of the fixed frame 41; it includes a liquid supply area 421 and a spray area 422, and the spray area 422 is arranged on the side close to the heat conducting plate 3; the liquid supply area 421 is adapted to be connected to an external coolant storage.

[0037] By connecting the liquid supply area 421 to an external coolant storage, when the coolant in the liquid supply area 421 decreases due to evaporation or use, the external coolant storage can replenish new coolant to the liquid supply area 421 to maintain the coolant volume in the liquid supply area 421 within a suitable range; since the coolant may have a reduced heat dissipation performance due to factors such as temperature rise and impurity accumulation after long-term use, when the temperature of the coolant in the liquid supply area 421 is too high or the performance does not meet the heat dissipation requirements, the coolant in the liquid supply area 421 can be replaced as a whole, so as to ensure that the coolant in the liquid storage chamber 42 always maintains the best working state and ensure that the liquid storage chamber 42 can continuously and stably supply suitable coolant.

[0038] In one embodiment, the liquid storage chamber 42 abuts against the heat conducting plate 3, and a second valve is provided at the water outlet of the liquid storage chamber 42; a pressure detection mechanism is provided in the liquid storage chamber 42, and the control system is communicatively connected to the second valve and the pressure detection mechanism. The control system controls the valve opening of the second valve according to the temperature data of the temperature detection mechanism 32 adjacent to the liquid storage chamber 42, the pressure data in the pressure detection mechanism, and the pressure difference before and after the valve of the second valve.

[0039] Since the liquid storage chamber 42 is in contact with the heat conduction plate 3, the heat of the heat conduction plate 3 can be conducted to the liquid storage chamber 42. Through the circulating flow of the coolant inside the liquid storage chamber 42, the heat can be further taken away and dissipated into the external environment, thereby realizing further heat dissipation of the heat conduction plate 3. And a second valve is provided at the water outlet of the liquid storage chamber 42. The control system controls the valve opening of the second valve according to the temperature data of the temperature detection mechanism 32 adjacent to the liquid storage chamber 42, the pressure data in the pressure detection mechanism, and the pressure difference before and after the valve of the second valve, so as to realize the control of the flow of the coolant in the liquid storage chamber 42 according to the temperature of the heat conduction plate 3, and can realize the dynamic balance of temperature - pressure - flow.

[0040] In a specific embodiment, the second valve is a solenoid valve.

[0041] In one embodiment, the cooling structure 4 further includes a pumping module 44, and the pumping module 44 is connected between the liquid supply area 421 and the external coolant storage.

[0042] By providing the pumping module 44, continuous and sufficient power support can be provided for the flow of the coolant in the liquid supply area 421.

[0043] In one embodiment, the cooling structure 4 further includes a plurality of cleaning modules, and the cleaning modules correspond to the spraying areas 422 one by one, and the cleaning modules are adapted to clean the spraying holes 423.

[0044] In practical applications, since impurities or scale are likely to accumulate in the spraying holes 423, which may lead to blockage. By providing corresponding cleaning modules for the spraying areas 422, the dirt and blockages in the spraying holes 423 can be removed in time, effectively preventing the occurrence of blockage problems in the spraying holes 423. This not only ensures the unobstructedness of the spraying holes 423, but also ensures the smooth spraying of the entire spraying area 422, making the spraying effect more uniform and stable.

[0045] In one embodiment, the cleaning module is an ultrasonic vibration module.

[0046] By setting the cleaning module as an ultrasonic vibration module, through generating high-frequency ultrasonic vibrations, it can penetrate into the interior of the spraying holes 423, efficiently peel off and remove the dirt, scale and impurities attached to the inner walls of the spraying holes 423. This not only enhances the cleaning effect and realizes the deep cleaning of the spraying holes 423, but also avoids the mechanical damage that the traditional cleaning method may cause to the spraying holes 423, thus ensuring the stable long-term use performance of the spraying holes 423 and extending their service life.

[0047] In a specific embodiment, the control system is communicatively connected to the ultrasonic vibration module. Whenever the timing of the control system reaches the first preset time interval, a control signal is automatically triggered to control the ultrasonic vibration module to start running. After receiving the control instruction, the ultrasonic vibration module will continuously work for the duration of the second preset time to complete the established cleaning task, ensuring that the ultrasonic vibration module can perform periodic operations at precise time intervals and realizing the regular cleaning of the spray holes 423.

[0048] Specifically, the first preset time and the second preset time are not limited. The first preset time can be 24 hours, 48 hours, or 36 hours; the second preset time can be 5 seconds, 10 seconds, or 15 seconds.

[0049] In a specific embodiment, a prediction system based on digital twin is used to predict the clogging risk of the spray holes 423 through pressure fluctuation spectrum analysis. When it is determined that there is a clogging risk in the spray holes 423, the control system controls the cleaning module to start and clean the spray holes 423.

[0050] In one embodiment, as Figure 4 shown, the cooling structure 4 further includes a condenser 45. The condenser 45 is located above the heat conducting plate 3 and is disposed within the fixed frame 41; the condenser 45 includes a liquid inlet 451 and a liquid outlet. The liquid inlet 451 is oriented towards the heat conducting plate 3, and the liquid outlet is connected to the liquid storage chamber 42.

[0051] Since the condenser 45 is located above the heat conducting plate 3 and the liquid inlet 451 of the condenser 45 is oriented towards the heat conducting plate 3, when the coolant absorbs heat on the heat conducting plate 3 and is converted into a gaseous state, it rises and directly enters the interior of the condenser 45; inside the condenser 45, through heat exchange, the gaseous coolant gradually releases the heat it carries and condenses back into a liquid form, and then the liquid coolant flows into the liquid storage chamber 42 connected to the liquid outlet of the condenser 45, realizing the recovery and reuse of the coolant.

[0052] In a specific embodiment, the liquid outlet is connected to the liquid supply area 421 of the liquid storage chamber 42. The coolant flowing out of the liquid outlet flows into the liquid supply area 421 of the liquid storage chamber 42, providing a reliable guarantee for subsequent recycling or secondary cooling treatment, avoiding affecting the coolant flow rate in the spray area 422 of the liquid storage chamber 42, and ensuring the precise control of the drainage flow rate in the spray area 422.

[0053] In one embodiment, as Figure 5 shown, the condenser 45 includes an inclined plate 452. The liquid outlet is disposed on the inclined plate 452, and the distance between the inclined plate 452 and the heat conducting plate 3 gradually decreases in the direction close to the liquid storage chamber 42.

[0054] Since the liquid outlet is provided on the inclined plate 452, and along the direction close to the liquid storage bin 42, the distance between the inclined plate 452 and the heat conducting plate 3 gradually decreases, which can guide the flow direction of the coolant, so that the coolant flowing out of the liquid outlet can flow along the surface of the inclined plate 452 towards the liquid storage bin 42, thus effectively ensuring the stability and reliability of the coolant recovery process.

[0055] In a specific embodiment, the condenser 45 further includes a housing 454 and a plurality of condenser tubes 455. The inclined plate 452 is fixed to the top of the fixed frame 41, and the housing 454 is fixed to the inclined plate 452. The plurality of condenser tubes 455 are arranged at intervals in sequence along the second direction. And the condenser tubes 455 extend along the first direction and are fixed inside the housing 454. The housing 454 includes a bottom plate, the bottom plate is arranged on the side close to the heat conducting plate 3, and a plurality of through holes are provided on the bottom plate, and the plurality of through holes are uniformly arranged on the bottom plate. The through holes serve as the liquid inlets 451, and the gaseous coolant enters the condenser 45 through the through holes and is cooled by the condenser tubes 455 inside the condenser 45.

[0056] In a specific embodiment, the condenser tubes 455 are copper tubes, and the gaseous coolant condenses into a liquid state after contacting the copper tubes.

[0057] In a specific embodiment, there are two inclined plates 452, and the two inclined plates 452 are respectively arranged in one-to-one correspondence with the two liquid storage bins 42 to realize the design of a two-way diversion structure. Specifically, one ends of the two inclined plates 452 are connected to each other, and the other ends are respectively connected to their corresponding liquid storage bins 42. And a first drainage groove is provided on the inclined plate 452, and the first drainage groove starts from the intersection end of the inclined plate 452, penetrates through the connection part of the inclined plate 452 and the housing 454 along the slope direction of the inclined surface, extends to the other end of the inclined plate 452 to form a liquid outlet and is connected to the liquid supply area 421 of the liquid storage bin 42, ensuring that even when the housing 454 is connected to the inclined plate 452, the liquid coolant attached to the inclined plate 452 can also flow along the first drainage groove into the corresponding liquid storage bin 42, realizing the orderly collection and recycling of the liquid coolant.

[0058] In a specific embodiment, there is no limit to the number of the first drainage grooves. One or more first drainage grooves can be provided. When there are multiple first drainage grooves, the extending directions of the multiple first drainage grooves are exactly the same, and a uniform interval distance is maintained between adjacent first drainage grooves. Through this equidistant and parallel layout method, it not only ensures the uniform distribution of the coolant on the surface of the inclined plate 452, but also avoids the fluid disorder phenomenon caused by uneven spacing of the first drainage grooves, ensuring the orderly diversion of the coolant.

[0059] In a specific embodiment, thin film piezoresistive sensors are arranged on both of the two inclined plates 452.

[0060] In a specific embodiment, a fluorinated polymer with a thickness of 2 μm is coated on the surface of the inclined plate 452 as a hydrophobic layer, so that the coolant attached to the inclined plate 452 forms spherical droplets and rolls off quickly, effectively avoiding the retention of the coolant on the surface of the inclined plate 452 and improving the recovery efficiency of the coolant attached to the inclined plate 452.

[0061] In a specific embodiment, the originally gaseous coolant enters the condenser 45 and gradually turns into a liquid under the cooling effect of the condenser tube 455. The liquefied coolant may adhere to the top inclined plate 452, the outer wall of the condenser tube 455, and the inner wall of the housing 454. The coolant attached to the inclined plate 452 will flow towards the liquid outlet along the first drainage groove provided on the inclined plate 452 and enter the liquid storage bin 42 for recycling. For the coolant attached to the outer wall of the condenser tube 455 and the inner wall of the housing 454, as it accumulates continuously, when the accumulation amount exceeds the critical value that the surface adhesion can bear, under the influence of gravity, the liquid coolant will drip from the outer wall of the condenser tube 455 and the inner wall of the housing 454 and finally fall onto the bottom plate of the condenser 45 housing 454. Since there are through holes on the bottom plate for the gaseous coolant to enter the condenser tube 455, there is a risk that the liquid coolant dripping onto the bottom plate will flow back to the heat conducting plate 3 through these through holes. Therefore, the through holes are set as inverted cones with a larger upper part and a smaller lower part, that is, the diameter of the through hole near the condenser tube 455 is larger, and the diameter of the through hole near the heat conducting plate 3 is smaller, making full use of the surface tension characteristics of the liquid: when a water droplet forms at the edge of the orifice of the through hole, due to the small diameter of the orifice of the through hole and the gradual narrowing downwards, the surface tension of the liquid will produce a hindering effect, making it difficult for the water droplet to fall further, thus effectively preventing the water droplet from dripping onto the lower heat conducting plate 3. At the same time, the larger upper aperture reduces the possibility of water droplets accumulating above the orifice, further reducing the risk of water droplets flowing back through the through hole and dripping onto the heat conducting plate 3.

[0062] In a specific embodiment, a fluorinated polymer with a thickness of 2 μm is coated on the outer wall of the condenser tube 455 and the inner wall of the housing 454 as a hydrophobic layer, so that the coolant attached to the outer wall of the condenser tube 455 and the inner wall of the housing 454 forms spherical droplets and rolls off quickly, effectively avoiding the retention of the coolant on the outer wall of the condenser tube 455 and the inner wall of the housing 454 and improving the recovery efficiency of the coolant attached to the outer wall of the condenser tube 455 and the inner wall of the housing 454.

[0063] In a specific embodiment, an annular flange structure is provided on the outer periphery of the through hole near the condenser tube 455 to form a physical barrier, which can prevent the coolant accumulated on the bottom plate from flowing directly into the through hole along the bottom plate surface, thereby further avoiding the coolant flowing back to the heat conducting plate 3 through the through hole.

[0064] In a specific embodiment, to ensure that the gaseous coolant can smoothly enter the condenser 45 through the through-holes, the bottom surface of the bottom plate close to the heat conducting plate 3 is horizontally arranged.

[0065] Preferably, a liquid collecting groove is provided on the side wall of the housing 454, and a guiding inclined surface is provided on one side of the bottom plate close to the condenser tube 455. The side of the guiding inclined surface close to the liquid collecting groove is smoothly connected to the inner side wall of the liquid collecting groove to form a continuous guiding path; along the direction close to the liquid collecting groove, the distance between the guiding inclined surface and the bottom surface of the bottom plate gradually decreases. When the coolant accumulates on the bottom plate, under the guiding action of the guiding inclined surface, the coolant can smoothly flow along this gradually decreasing inclined surface and finally flow into the liquid collecting groove, thereby ensuring the reasonable flow and effective collection of the coolant inside the housing 454.

[0066] Specifically, since along the direction close to the liquid collecting groove, the distance between the guiding inclined surface and the bottom surface of the bottom plate gradually decreases, when the liquid level height in the liquid collecting groove is higher than the inner side wall of the liquid collecting groove, under the action of the guiding inclined surface, the coolant in the liquid collecting groove also preferentially accumulates on the side of the guiding inclined surface close to the liquid collecting groove, avoiding the spread of the overflowing coolant to other positions of the bottom plate, and further reducing the risk of the coolant on the bottom plate flowing to the heat conducting plate 3 through the through-holes.

[0067] In a specific embodiment, the liquid collecting groove and the liquid supply area 421 of the liquid storage bin 42 are used to convey the liquid through a pneumatic diaphragm pump; the inner side wall of the liquid collecting groove is lower than the outer side wall of the liquid collecting groove, and the outer side wall of the liquid collecting groove can be fixedly connected to the inclined plate 452; a liquid discharge port is provided on the outer side wall of the liquid collecting groove, the water inlet end of the pneumatic diaphragm pump is connected to the liquid discharge port of the liquid collecting groove, and the water outlet end is connected to the liquid supply area 421 of the liquid storage bin 42. Through the power action of the pneumatic diaphragm pump, it can ensure that the coolant in the liquid collecting groove is stably conveyed to the liquid supply area 421 of the liquid storage bin 42 in a one-way flow manner.

[0068] In a specific embodiment, a liquid level sensor is provided on the liquid collecting groove. The liquid level sensor can be installed on the inner side wall of the liquid collecting groove or on the outer side wall of the liquid collecting groove to directly sense the actual height of the liquid in the liquid collecting groove, and the installation height of the liquid level sensor is less than the height of the inner side wall of the liquid collecting groove; both the liquid level sensor and the pneumatic diaphragm pump are connected to the control system. When the liquid level sensor detects that the liquid in the liquid collecting groove reaches the preset height, it will immediately send a liquid level signal to the control system. After receiving this signal, the control system controls the pneumatic diaphragm pump to start running, and the pneumatic diaphragm pump pumps the coolant in the liquid collecting groove into the corresponding liquid supply area 421 of the liquid storage bin 42, thereby effectively preventing the overflow of the coolant in the liquid collecting groove.

[0069] In a specific embodiment, there may be two liquid collection tanks, which are oppositely arranged on both sides of the housing 454 and respectively form independent circulation units with the corresponding two liquid storage tanks 42. A liquid level sensor is provided in each liquid collection tank, and a pneumatic diaphragm pump is separately configured. There are two guiding inclined surfaces, which are respectively arranged in one-to-one correspondence with the two liquid collection tanks; specifically, one ends of the two guiding inclined surfaces are connected to each other, and the other ends are respectively connected to the corresponding liquid collection tanks; preferably, a second drainage groove may be provided on the guiding inclined surface, and the second drainage groove extends from one end of the guiding inclined surface to the other end and communicates with the liquid collection tank, realizing the orderly collection of the liquid coolant on the guiding inclined surface.

[0070] In a specific embodiment, the number of the second drainage grooves is not limited, and there may be one or more second drainage grooves. When there are multiple second drainage grooves, the extending directions of the multiple second drainage grooves are completely the same, and a uniform interval distance is maintained between adjacent second drainage grooves. Through this equidistant and parallel layout method, it not only ensures the uniform distribution of the coolant on the guiding inclined surface, but also avoids the fluid disorder phenomenon caused by uneven spacing of the second drainage grooves, ensuring the orderly diversion of the coolant.

[0071] Specifically, one or more second drainage grooves may be provided between two adjacent rows of through holes.

[0072] In another implementation manner of this embodiment, it is also possible that liquid collecting grooves are provided on the side walls around the housing 454, and the four liquid collecting grooves are in fluid communication through an internal communication channel. While maintaining the compactness of the housing 454, the total liquid collecting volume is effectively expanded. A liquid level sensor is installed in only one of the liquid collecting grooves. Through the characteristic of the four-groove communication, this liquid level sensor can obtain the liquid level data of all the liquid collecting grooves in real time, ensuring both the monitoring accuracy and simplifying the system structure and saving costs. Specifically, a single pump can be set between the liquid storage bin 42 and the liquid collecting groove; one of the liquid collecting grooves forms a fluid path with a liquid storage bin 42 through a pneumatic diaphragm pump. When the liquid level sensor detects that the liquid in the liquid collecting groove reaches the preset height, it will immediately send a liquid level signal to the control system; after receiving this signal, the control system controls the pneumatic diaphragm pump to start running, and the pneumatic diaphragm pump pumps the coolant in the liquid collecting groove into the liquid supply area 421 of the liquid storage bin 42 connected to the liquid collecting groove, thus effectively preventing the overflow of the coolant in the liquid collecting groove; the liquid level balance of the whole system is achieved through single-pump pumping and discharging. Or a double-pump setting can be adopted between the liquid storage bin 42 and the liquid collecting groove, and two pneumatic diaphragm pumps form a one-to-one correspondence with two liquid storage bins 42; when the liquid level sensor detects that the liquid in the liquid collecting groove reaches the preset height, it will immediately send a liquid level signal to the control system. After receiving this signal, the control system controls the two pneumatic diaphragm pumps to start running simultaneously, and the two pneumatic diaphragm pumps respectively pump the coolant in the liquid collecting groove into the corresponding liquid supply areas 421 of the liquid storage bins 42, thus effectively preventing the overflow of the coolant in the liquid collecting groove, and more efficient liquid level regulation is achieved through the coordinated operation of the two pumps.

[0073] Specifically, when there are four liquid collecting grooves, four guiding inclined surfaces can also be correspondingly extended, and the four guiding inclined surfaces correspond to the four liquid collecting grooves one by one.

[0074] In a specific implementation manner, a 2-μm-thick fluorinated polymer is coated on the guiding inclined surface as a hydrophobic layer, so that the coolant on the guiding inclined surface forms spherical shapes and rolls down quickly, effectively avoiding the retention phenomenon of the coolant on the guiding inclined surface and improving the recovery efficiency of the coolant on the guiding inclined surface.

[0075] In one embodiment, the condenser 45 further includes a filter screen 453, and the filter screen 453 is arranged at the connection between the liquid outlet and the liquid storage bin 42.

[0076] By setting the filter screen 453, when the coolant flows through the filter screen 453, various impurities, particulate matters, etc. mixed in it are effectively intercepted, so as to ensure that the coolant entering the interior of the liquid storage bin 42 has a high cleanliness, realizing the pre-filtering treatment of the coolant flowing from the condenser 45 to the liquid storage bin 42, reducing the risk of blockage of the spray holes 423 or the liquid outlet of the liquid storage bin 42 caused by impurity accumulation, extending the service life of the entire cooling structure 4, and reducing the frequency of fault maintenance caused by blockage.

[0077] In one embodiment, the cooling structure 4 further includes a cleaning cylinder 46. The cleaning cylinder 46 is disposed on the side of the heat conducting plate 3 away from the heat insulating cover 1, is slidably connected within the fixed frame 41, and is slidably engaged with the heat insulating cover 1 and the heat conducting plate 3.

[0078] Since the cleaning cylinder 46 is slidably connected within the fixed frame 41 and is slidably engaged with the heat insulating cover 1 and the heat conducting plate 3, as the cleaning cylinder 46 slides within the fixed frame 41, the cleaning of the heat insulating cover 1 and the heat conducting plate 3 can be achieved, avoiding excessive residue of the coolant on the heat conducting plate 3, realizing the effective maintenance of the heat insulating cover 1 and the heat conducting plate 3, and avoiding the risk of performance degradation caused by problems such as coolant residue.

[0079] In one embodiment, as Figure 6 shown, the cooling structure 4 further includes a sliding assembly 47. The sliding assembly 47 includes a slide rail 471 and a slider 472; the slide rail 471 is disposed on the side wall of the fixed frame 41 and extends along a first direction; the slider 472 is slidably connected to the slide rail 471, and the cleaning cylinder 46 is connected to the slider 472. The cleaning cylinder 46 extends along a second direction, and the first direction is perpendicular to the second direction.

[0080] Since the slider 472 is slidably connected, and the cleaning cylinder 46 is fixedly connected to the slider 472, through the slider 472 as an intermediary, the sliding fit relationship between the cleaning cylinder 46 and the slide rail 471 is indirectly realized. Since the slide rail 471 is disposed on the side wall of the fixed frame 41, when the slider 472 slides along the slide rail 471, the cleaning cylinder 46 fixedly connected thereto also realizes a sliding movement within the internal space of the fixed frame 41, ensuring that the cleaning cylinder 46 can perform cleaning or wiping operations along a predetermined path.

[0081] In an implementation manner of this embodiment, there are two sets of sliding assemblies 47. The two sets of sliding assemblies 47 are respectively disposed on both sides of the fixed frame 41 along the second direction; the two slide rails 471 are respectively disposed on the two side walls of the fixed frame 41 along the second direction; and both ends of the cleaning cylinder 46 are respectively connected to the two sliders 472 in a rotatable connection manner, enabling the cleaning cylinder 46 to rotate freely during the process of sliding along the slide rail 471 with the slider 472; when driving the slider 472 to slide within the slide rail 471, the cleaning cylinder 46 moves accordingly and forms a rolling fit with the surfaces of the heat insulating cover 1 and the heat conducting plate 3, realizing the cleaning of the surfaces of the heat insulating cover 1 and the heat conducting plate 3.

[0082] In a specific embodiment, the slider 472 includes a sliding end and a rotating end connected in sequence, the sliding end is slidably connected to the slide rail 471, the rotating end is disposed adjacent to the slide rail 471, and a through hole is disposed on the rotating end, and the two ends of the cleaning cylinder 46 respectively pass through the through holes of the two sliders 472 and are respectively connected to the two limit blocks; specifically, the rotating end can be located above the slide rail 471 or below the slide rail 471. In another embodiment, the cleaning cylinder 46 can also include a rotating shaft and a cleaning sleeve, the rotating shaft is fixedly connected to the slider 472, the cleaning sleeve is sleeved on the outer periphery of the rotating shaft, and is rotatably matched with the rotating shaft.

[0083] In another implementation of the present embodiment, the sliding assembly 47 is provided with a group of slide rails 471 fixed on the top walls relative to the fixed frame 41 and the heat conducting plate 3; the slider 472 is fixedly connected to the side of the cleaning cylinder 46 facing away from the heat conducting plate 3, and when the driving slider 472 slides in the slide rail 471, the cleaning cylinder 46 moves accordingly and forms a sliding fit with the surfaces of the heat insulation cover 1 and the heat conducting plate 3, thereby cleaning the surfaces of the heat insulation cover 1 and the heat conducting plate 3.

[0084] In a specific embodiment, there is no limitation on the driving method for driving the slider 472 to slide on the slide rail 471. Specifically, the slide rail 471 is an electric slide rail 471, and the electric slide rail 471 is communicated with the control system. The control system realizes the back and forth sliding of the slider 472 by controlling the start and stop of the electric slide rail 471.

[0085] In a specific embodiment, when the cooling structure 4 needs to be replaced or repaired, the two electric slide rails 471 are started, and the two sliders 472 drive the cleaning cylinder 46 to move along the two electric slide rails 471. During the movement of the cleaning cylinder 46, the cleaning cylinder 46 is in close contact with the heat insulation cover 1 and the heat conduction plate 3, and the surfaces of the heat insulation cover 1 and the heat conduction plate 3 are wiped clean to ensure that the surfaces of the heat insulation cover 1 and the heat conduction plate 3 are clean and free of coolant residue. After cleaning, the integrated heat insulation cover 1, the heat conduction plate 3 and the cooling structure 4 can be disassembled to effectively avoid accidental outflow of coolant due to coolant residue during the disassembly process, thereby causing pollution to the external environment.

[0086] In a specific embodiment, the cleaning cylinder 46 is a sponge cylinder. By setting the cleaning cylinder 46 as a sponge cylinder, due to the soft texture of the sponge, during the cleaning process, when the sponge cylinder contacts and moves with the surfaces of the heat insulation cover 1 and the heat conduction plate 3, it can effectively avoid damage to the surfaces of the heat insulation cover 1 and the heat conduction plate 3 due to friction or collision, thereby protecting the integrity of the heat insulation cover 1 and the heat conduction plate 3; and because the sponge also has good water absorption, it can quickly and fully absorb the coolant remaining on the surfaces of the heat insulation cover 1 and the heat conduction plate 3, ensuring that the surfaces of the heat insulation cover 1 and the heat conduction plate 3 are clean and dry.

[0087] In another embodiment, a driving member such as a cylinder or a hydraulic cylinder may be provided at the end of the slide rail 471. The driving end of the driving member is connected to the slider 472, and the driving member is communicatively connected to the control system. The control system controls the driving member to drive the slider 472 to slide along the slide rail 471. Alternatively, the slide rail 471 is configured as a lead screw structure, and the slide rail 471 is threadedly connected to the lead screw structure; the end of the lead screw structure is fixedly connected to the driving end of the driving motor; the driving motor is communicatively connected to the control system, and the control system drives the driving motor to rotate forward or backward to drive the slider 472 to move back and forth on the lead screw structure.

[0088] In a specific embodiment, the control system periodically controls the slider 472 to slide along the slide rail 471 to achieve periodic cleaning of the surfaces of the heat shield 1 and the heat conducting plate 3 by the cleaning cylinder 46, ensuring that the overall performance of the cooling structure 4 is always in the best state.

[0089] In one embodiment, a support structure 5 is further included. One end of the support structure 5 is fixedly connected to the side of the piece to be cooled 2, and the other end of the support structure 5 is connected to the fixed frame 41.

[0090] By connecting the support structure 5 to the fixed frame 41, reliable support for the cooling structure 4 is achieved, effectively dispersing its weight, preventing it from exerting excessive pressure on the piece to be cooled 2 below due to its own excessive weight, and avoiding possible deformation, damage, etc. of the piece to be cooled 2 under excessive pressure. The stability of the relative position and contact state between the piece to be cooled 2 and the cooling structure 4 is maintained, ensuring the cooling effect of the cooling structure 4 on the piece to be cooled 2, providing a stable and safe working environment for the piece to be cooled 2 and the cooling structure 4, guaranteeing the safety and normal operation of the piece to be cooled 2 and the cooling structure 4, and ensuring that the entire cooling structure 4 can continuously provide cooling services for the piece to be cooled 2.

[0091] In one embodiment of the present embodiment, one end of the support structure 5 is fixedly connected to one side of the piece to be cooled 2 along the first direction and is spaced apart from the piece to be cooled 2; the other end is fixedly connected to the side of the fixed frame 41 facing away from the piece to be cooled 2, or the other end is fixedly connected to one side of the piece to be cooled 2 along the second direction, or the other end is fixedly connected to one side of the piece to be cooled 2 along the first direction.

[0092] In another embodiment of the present embodiment, one end of the support structure 5 is fixedly connected to one side of the piece to be cooled 2 along the second direction and is spaced apart from the piece to be cooled 2; the other end is fixedly connected to the side of the fixed frame 41 facing away from the piece to be cooled 2, or the other end is fixedly connected to one side of the piece to be cooled 2 along the second direction, or the other end is fixedly connected to one side of the piece to be cooled 2 along the first direction.

[0093] In another implementation of this embodiment, one end of the support structure 5 is fixed to the side of the fixed frame 41 away from the piece to be cooled 2 and is spaced from the fixed frame 41; the other end is fixed to the side of the fixed frame 41 away from the piece to be cooled 2, or the other end is fixed to one side of the piece to be cooled 2 along the second direction, or the other end is fixed to one side of the piece to be cooled 2 along the first direction.

[0094] In one embodiment, as Figure 1 and Figure 2 shown, the support structure 5 includes a support base 51 and a connection assembly 52; the support base 51 is spaced from the piece to be cooled 2 along the second direction; one end of the connection assembly 52 is connected to the support base 51, and the other end extends along the second direction and is connected to the fixed frame 41.

[0095] In one embodiment, the connection assembly 52 includes a rotating rod 521 and a sliding rod 522; the rotating rod 521 is fixedly connected to the support base 51; the sliding rod 522 is slidably connected to the rotating rod 521 along the second direction and is detachably connected to the fixed frame 41.

[0096] Through the sliding connection between the sliding rod 522 and the rotating rod 521, it can be dynamically adapted according to the actual distance between the support base 51 and the piece to be cooled 2. When the installation environment inside the server changes, or due to the layout differences of the pieces to be cooled 2 with different models and specifications and other components inside the server, resulting in different requirements for the distance between the support base 51 and the piece to be cooled 2, the sliding connection between the sliding rod 522 and the rotating rod 521 can achieve distance adjustment to meet the requirements of the actual distance; whether in a small server with a narrow space and a compact layout or in a large server with a relatively spacious space and a more dispersed component layout, it can be adjusted according to the actual situation to ensure that the distance between the support base 51 and the piece to be cooled 2 reaches the optimal state; enabling the support structure 5 to better adapt to different installation environments, not only providing a stable and reliable support for the piece to be cooled 2 to ensure its normal and efficient operation, but also providing sufficient space and convenient conditions for the layout and installation of other components inside the server.

[0097] In a specific implementation, the rotating rod 521 includes a first rod body and a second rod body. The first rod body extends along the third direction, and both ends are respectively connected to the support base 51 and the second rod body; the second rod body extends along the second direction; the sliding rod 522 extends along the second direction, one end is slidably connected to the second rod body, and the other end is detachably connected to the fixed frame 41. The third direction is perpendicular to each of the first direction and the second direction.

[0098] In a specific implementation, the first rod body and the second rod body are connected by a first arc-shaped rod.

[0099] In one embodiment, the sliding rod 522 is magnetically connected to the fixed frame 41.

[0100] By magnetically connecting the sliding rod 522 to the fixed frame 41, the complex installation steps required by traditional fasteners are simplified. Precise positioning and fixation between the two can be achieved without the aid of professional tools, and the installation and disassembly between the two are facilitated, improving the overall assembly efficiency and the convenience of later maintenance.

[0101] In a specific embodiment, a first magnetic connector 523 is provided on the fixed frame 41, and a second magnetic connector 524 is provided on the sliding rod 522. The magnetic connection between the fixed frame 41 and the sliding rod 522 is achieved through the cooperation of the first magnetic connector 523 and the second magnetic connector 524.

[0102] In a specific embodiment, the sliding rod 522 includes a third rod body and a second magnetic connector 524, and the third rod body and the second magnetic connector 524 are connected by a second arc-shaped rod.

[0103] According to an embodiment of the present invention, on the other hand, a control method is also provided for the above liquid cooling and heat dissipation device, including the following steps:

[0104] Obtain the temperature data of the temperature detection mechanism 32;

[0105] Control the corresponding spray area 422 to spray the coolant according to the temperature data.

[0106] In one embodiment, controlling the corresponding spray area 422 to spray the coolant according to the temperature data includes the following steps:

[0107] Obtain the first deviation amount between the temperature data and the preset target temperature, perform fuzzy proportional-integral-derivative calculation, and obtain the first output amount;

[0108] Control the valve opening of the corresponding first valve 43 according to the first output amount.

[0109] By obtaining the temperature data of the temperature detection mechanism 32 in real time and dynamically adjusting the coolant injection amount of the corresponding spray area 422, precise temperature control and efficient cooling can be achieved: the system responds quickly according to the temperature deviation, enhances the injection intensity to avoid thermal damage when the equipment overheats, and automatically reduces the flow rate to prevent overcooling when approaching the target temperature, realizing the on-demand supply of coolant and reducing energy consumption and resource waste.

[0110] In a specific embodiment, the calculation formula of the first output amount is:

[0111]

[0112] In the formula:

[0113] : The first deviation amount between the temperature data and the preset target temperature;

[0114] : Proportional gain;

[0115] : Integral gain;

[0116] : Derivative gain.

[0117] In a specific embodiment, it is necessary to first obtain the actual flow rate data of the first valve 43, and combine it with the first output to automatically adjust the valve opening of the first valve 43.

[0118] In a specific embodiment, the calculation formula for the actual flow rate data of the first valve 43 is:

[0119]

[0120] In the formula:

[0121] : The valve flow coefficient of the first valve 43;

[0122] : The pressure difference before and after the valve of the first valve 43;

[0123] SG: Fluid specific gravity;

[0124] f(T): The correction function of temperature to fluid viscosity / density.

[0125] In one embodiment, the following steps are further included:

[0126] Obtain the pressure data of the pressure detection mechanism in the liquid storage tank 42 and the pressure difference before and after the valve of the second valve;

[0127] Control the valve opening of the second valve according to the temperature data of the temperature detection mechanism 32, the pressure data in the pressure detection mechanism, and the pressure difference before and after the valve of the second valve.

[0128] By collecting the temperature data of the temperature detection mechanism 32, the pressure data of the pressure detection mechanism, and the pressure difference before and after the valve of the second valve in real time, and jointly controlling the valve opening of the second valve, efficient and accurate system regulation can be achieved: the temperature data ensures that the exchange speed of the coolant in the liquid storage tank 42 matches the heat dissipation requirement of the heat conduction plate 3, the pressure data maintains the pressure balance inside the liquid storage tank 42, combines the valve pressure difference of the second valve to dynamically compensate the flow rate, optimizes the exchange efficiency of the coolant, and avoids frequent opening and closing of the valve of the second valve or extreme pressure difference impact through pressure-temperature linkage control.

[0129] In one embodiment, the valve opening of the second valve is controlled according to the temperature data of the temperature detection mechanism 32, the pressure data in the pressure detection mechanism, and the pressure difference before and after the second valve, including the following steps:

[0130] Calculate the average temperature of the heat conducting plate 3 corresponding to the liquid storage tank 42 according to the temperature data;

[0131] Calculate the temperature-compensated pressure value according to the average temperature and the pressure data;

[0132] Perform feedforward compensation calculation according to the temperature-compensated pressure value and obtain a second output;

[0133] Calculate the water flow rate data at the water outlet of the liquid storage tank 42 according to the pressure difference before and after the second valve;

[0134] Obtain a second deviation between the preset flow rate data and the water flow rate data, perform fuzzy proportional-integral-derivative calculation, and obtain a third output;

[0135] Control the valve opening of the second valve according to the second output and the third output.

[0136] In a specific embodiment, the calculation formula for the temperature-compensated pressure value is:

[0137]

[0138] Where:

[0139] : The original pressure value;

[0140] T: The temperature data detected by the current temperature detection mechanism 32 minus the calibration reference temperature of the temperature detection mechanism 32;

[0141] α: Temperature compensation coefficient.

[0142] In a specific embodiment, the calibration reference temperature of the temperature detection mechanism 32 needs to be set according to the actual situation, and specifically can be 16 °C.

[0143] In a specific embodiment, the temperature compensation coefficient needs to be calibrated according to the manual of the temperature detection mechanism 32.

[0144] In a specific embodiment, the calculation formula for the water flow rate data is:

[0145]

[0146] Where:

[0147] : The valve flow coefficient of the second valve;

[0148] : Differential pressure before and after the valve of the second valve;

[0149] SG: Specific gravity of the fluid;

[0150] f(T): Correction function of temperature for fluid viscosity / density.

[0151] In a specific embodiment, the correction function of temperature for fluid viscosity / density needs to be calibrated according to experiments.

[0152] In a specific embodiment, the calculation formula for the second output quantity is:

[0153]

[0154] Where:

[0155] : Feedforward gain coefficient;

[0156] : Compensated pressure change;

[0157] : Reference pressure value;

[0158] β: Temperature compensation coefficient;

[0159] T: Temperature data detected by the current temperature detection mechanism 32 minus the calibration reference temperature of the temperature detection mechanism 32.

[0160] In a specific embodiment, the temperature compensation coefficient needs to be calibrated according to experiments.

[0161] In a specific embodiment, the calculation formula for the third output quantity is:

[0162]

[0163] Where:

[0164] : Second deviation between the preset flow data and the water outlet flow data;

[0165] : Proportional gain;

[0166] : Integral gain;

[0167] : Derivative gain.

[0168] In a specific embodiment, the calculation formula for the valve opening of the second valve is:

[0169]

[0170] In a specific embodiment, as Figure 7 shown, the liquid cooling device forms a circulation system with an external coolant reservoir, and both the liquid cooling device and the external coolant reservoir establish two-way data communication with the computer; the computer serves as a central node, driving the local display to operate through a video interface respectively, and at the same time realizing remote data transmission via a wireless module; in this architecture, both the display and the wireless module are connected to an independent cloud, realizing a full-link intelligent control system from hardware heat dissipation management to human-computer interaction and then to cloud integration.

[0171] In a specific embodiment, as Figure 8 shown, the specific implementation steps are as follows:

[0172] Power on;

[0173] The control system performs self-check;

[0174] The temperature detection mechanism 32 and the pressure detection mechanism perform self-check; the spray holes 423 perform self-cleaning;

[0175] Obtain the temperature data of each temperature detection mechanism 32, the pressure data of the pressure detection mechanism, the valve flow coefficient and the pressure difference before and after the valve of the first valve 43, the valve flow coefficient and the pressure difference before and after the valve of the second valve;

[0176] Calculate the actual flow data of the first valve 43 according to the pressure difference before and after the second valve; obtain the first deviation amount between the temperature data and the preset target temperature, perform fuzzy proportional-integral-derivative calculation, and obtain the first output amount; control the valve opening of the corresponding first valve 43 according to the first output amount;

[0177] At the same time, according to the temperature data, calculate the average temperature of the heat conduction plate 3 corresponding to the liquid storage tank 42; calculate the temperature-compensated pressure value according to the average temperature and the pressure data; perform feedforward compensation calculation according to the temperature-compensated pressure value, and obtain the second output amount; calculate the water flow data at the water outlet of the liquid storage tank 42 according to the pressure difference before and after the second valve; obtain the second deviation amount between the preset flow data and the water flow data, perform fuzzy proportional-integral-derivative calculation, and obtain the third output amount; control the valve opening of the second valve according to the second output amount and the third output amount;

[0178] Then judge whether the pressure in the liquid storage tank 42 exceeds the limit value; if the pressure in the liquid storage tank 42 exceeds the limit value, adjust the valve opening of the second valve; update the display screen; if the pressure in the liquid storage tank 42 does not exceed the limit value, update the display screen;

[0179] Upload data to the cloud;

[0180] Determine whether the continuous working duration of the system is greater than or equal to forty-eight hours; if the continuous working duration of the system is greater than or equal to forty-eight hours, conduct self-checks on the temperature detection mechanism 32 and the pressure detection mechanism again; perform self-cleaning on the spray holes 423, and continue to execute the above steps in sequence; if the continuous working duration of the system is less than forty-eight hours; delay for 10 milliseconds; then obtain the temperature data of each temperature detection mechanism 32, the pressure data of the pressure detection mechanism, the valve flow coefficient and the pressure difference before and after the valve of the first valve 43, and the valve flow coefficient and the pressure difference before and after the valve of the second valve again, and continue to execute the above steps in sequence.

[0181] The above has introduced in detail a liquid cooling heat dissipation device and a control method provided by the present application. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present application, several improvements and modifications can still be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A liquid cooling and heat dissipation device, characterized in that, Comprising: A heat shield (1), adapted to cover the outer periphery of a component to be cooled (2); A heat conducting plate (3), disposed on the heat shield (1) and in heat conducting cooperation with the component to be cooled (2); and the heat conducting plate (3) is divided into a plurality of heat conducting zones (31); one temperature detection mechanism (32) is correspondingly disposed on one of the heat conducting zones (31); A cooling structure (4), disposed on the heat shield (1); comprising a plurality of spraying zones (422), at least one of the heat conducting zones (31) corresponds to at least one of the spraying zones (422), and the spraying zones (422) are adapted to spray a coolant onto the corresponding heat conducting zones (31); A control system, communicatively connected to the temperature detection mechanism (32) and the spraying zones (422), and controlling the corresponding spraying zones (422) to spray the coolant according to the temperature data of the temperature detection mechanism (32); the cooling structure (4) includes a liquid storage bin (42), the liquid storage bin (42) includes a liquid supply zone (421) and the spraying zones (422) that communicate with each other, the spraying zones (422) are disposed on a side close to the heat conducting plate (3), and a plurality of spraying holes (423) are provided on a side of the spraying zones (422) close to the heat conducting plate (3); A first valve (43) is provided between the spraying zones (422) and the liquid supply zone (421), the first valve (43) is communicatively connected to the control system, and the control system controls the valve opening of the corresponding first valve (43) according to the temperature data of the temperature detection mechanism (32).

2. The liquid cooling and heat dissipation device according to claim 1, wherein The cooling structure (4) includes: A fixing frame (41), disposed on the heat shield (1); A liquid storage bin (42), fixed to the side surface of the fixing frame (41).

3. The liquid cooling and heat dissipation device according to claim 1, characterized in that The cooling structure (4) includes: A fixing frame (41), disposed on the heat shield (1); A liquid storage bin (42), fixed to the side surface of the fixing frame (41); including a liquid supply zone (421) and the spraying zones (422), the spraying zones (422) are disposed on a side close to the heat conducting plate (3); the liquid supply zone (421) is adapted to be connected to an external coolant storage.

4. The liquid cooling heat dissipation device according to claim 3, characterized in that, The liquid storage bin (42) abuts against the heat conducting plate (3), and a second valve is provided at the water outlet of the liquid storage bin (42); a pressure detection mechanism is provided in the liquid storage bin (42), the control system is communicatively connected to the second valve and the pressure detection mechanism, and the control system controls the valve opening of the second valve according to the temperature data of the temperature detection mechanism (32) adjacent to the liquid storage bin (42), the pressure data in the pressure detection mechanism, and the pressure difference before and after the valve of the second valve.

5. The liquid cooling heat dissipation device according to claim 3, characterized in that, The cooling structure (4) further includes a pumping module (44), and the pumping module (44) is connected between the liquid supply zone (421) and the external coolant storage.

6. The liquid cooling heat dissipation device according to claim 2, characterized in that, The cooling structure (4) further includes a plurality of cleaning modules, the cleaning modules correspond to the spraying zones (422) one by one, and the cleaning modules are adapted to clean the spraying holes (423).

7. The liquid cooling heat dissipation device according to claim 6, wherein The cleaning module is an ultrasonic vibration module.

8. The liquid cooling and heat dissipation device according to any one of claims 2 to 7, characterized in that The cooling structure (4) further comprises a condenser (45), the condenser (45) being located above the heat conducting plate (3) and arranged in the fixing frame (41); the condenser (45) comprises a liquid inlet (451) and a liquid outlet, the liquid inlet (451) being arranged towards the heat conducting plate (3), and the liquid outlet being connected to the liquid storage tank (42).

9. The liquid cooling and heat dissipation device according to claim 8, wherein, The condenser (45) comprises an inclined plate (452), the liquid outlet is arranged on the inclined plate (452), and the distance between the inclined plate (452) and the heat conduction plate (3) gradually decreases in a direction approaching the liquid storage tank (42).

10. The liquid cooling and heat dissipation device according to claim 8, characterized in that, The condenser (45) further comprises a filter screen (453), wherein the filter screen (453) is arranged at the connection between the liquid outlet and the liquid storage tank (42).

11. The liquid cooling heat dissipation device according to any one of claims 2 to 7, 9 or 10, characterized in that, The cooling structure (4) further comprises a cleaning cylinder (46), which is arranged on a side of the heat conducting plate (3) away from the heat insulating cover (1), is slidably connected in the fixing frame (41), and is slidably matched with the heat insulating cover (1) and the heat conducting plate (3).

12. The liquid cooling heat dissipation device according to claim 11, wherein, The cooling structure (4) further comprises a sliding assembly (47), wherein the sliding assembly (47) comprises: A slide rail (471) is arranged on a side wall of the fixing frame (41) and extends along a first direction; The sliding block (472) is slidably connected to the sliding rail (471), and the cleaning cylinder (46) is connected to the sliding block (472); the cleaning cylinder (46) extends along a second direction, and the first direction is perpendicular to the second direction.

13. The liquid cooling and heat dissipation device according to any one of claims 2 to 7, 9, 10 or 12, characterized in that, It also comprises a supporting structure (5), one end of the supporting structure (5) is fixed to the side of the part to be cooled (2), and the other end is connected to the fixing frame (41).

14. The liquid cooling and heat dissipation device according to claim 13, wherein, The support structure (5) comprises: A support seat (51) is arranged spaced apart from the part to be cooled (2) along the second direction; A connecting component (52) having one end connected to the supporting seat (51) and the other end extending along the second direction and connected to the fixing frame (41).

15. The liquid cooling heat dissipation device according to claim 14, wherein The connection component (52) comprises: A rotating rod (521) fixedly connected to the support seat (51); The sliding rod (522) is slidably connected to the rotating rod (521) along the second direction, and is detachably connected to the fixing frame (41).

16. The liquid cooling and heat dissipation device according to claim 15, characterized in that The sliding rod (522) is magnetically connected to the fixing frame (41).

17. A control method, characterized in that The liquid cooling device according to any one of claims 1 to 16 comprises the following steps: Acquiring temperature data from a temperature detection mechanism (32); The corresponding spraying area (422) is controlled to spray the cooling liquid according to the temperature data.

18. The control method according to claim 17, wherein, The step of controlling the corresponding spraying area (422) to spray the cooling liquid according to the temperature data comprises the following steps: Obtaining a first deviation between the temperature data and a preset target temperature, performing a fuzzy proportional-integral-differential calculation, and obtaining a first output; The valve opening of the corresponding first valve (43) is controlled according to the first output amount.

19. The control method according to claim 17, characterized in that, The following steps are also included: Obtaining pressure data of a pressure detection mechanism in the liquid storage tank (42) and a pressure difference before and after the second valve; Control the valve opening of the second valve according to the temperature data of the temperature detection mechanism (32), the pressure data in the pressure detection mechanism, and the pressure difference before and after the second valve.

20. The control method according to claim 19, wherein Controlling the valve opening of the second valve according to the temperature data of the temperature detection mechanism (32), the pressure data in the pressure detection mechanism, and the pressure difference before and after the second valve includes the following steps: Calculate the average temperature of the heat conducting plate (3) corresponding to the liquid storage tank (42) according to the temperature data. Calculate the temperature-compensated pressure value according to the average temperature and the pressure data. Perform a feedforward compensation calculation according to the temperature-compensated pressure value and obtain a second output. Calculate the water flow rate data at the water outlet of the liquid storage tank (42) according to the pressure difference before and after the second valve. Obtain a second deviation amount between the preset flow rate data and the water flow rate data, perform a fuzzy proportional-integral-derivative calculation, and obtain a third output. Control the valve opening of the second valve according to the second output and the third output.

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