Self-adaptive GPU liquid cooling device and computing power server heat dissipation system

Abstract

According to the self-adaptive GPU liquid cooling device and the computing power server heat dissipation system, a liquid cooling plate is attached to a GPU, a channel is formed in the liquid cooling plate, and a cooling liquid inlet and a cooling liquid outlet are formed in the two ends; the limiting bracket is sleeved on the fixed shaft, is rotatably arranged in the liquid cooling plate and is close to the inlet, and the limiting bracket is provided with a limiting piece which extends outwards; the flow baffle is fixed in the channel through a rotating shaft and can dynamically abut against the limiting piece; and the other end of the spring is fixed. The flow velocity of cooling liquid adjusts the opening angle of the flow baffle along with the temperature change of the GPU, the spring pulls the flow baffle to reset when the flow velocity is reduced, and dynamic heat dissipation regulation and control are ensured. According to the scheme, cooling liquid flow rate adjustment and automatic reset design are combined, the sensitivity and efficiency of self-adaptive adjustment of the scheme are brought into full play, cost, stability and applicability are achieved, and an efficient heat dissipation solution is provided for high-performance GPU equipment.

Description

Technical Field

[0001] The present application relates to the field of server cooling and heat dissipation technology, and in particular to an adaptive GPU liquid cooling device and a computing power server heat dissipation system. Background Art

[0002] With the rapid development of technologies such as cloud computing, big data, and artificial intelligence, data centers have become the foundation of the modern digital world, responsible for processing and storing huge amounts of data. The computing needs of data centers have increased significantly, and the servers in data centers must cope with the growing computing needs, which directly leads to a significant increase in the energy consumption and heat generation of the server's internal hardware (such as GPU, CPU, etc.).

[0003] Traditional GPU cooling solutions usually use a combination of fans and heat sinks, but there are problems with high cooling noise and high energy consumption, which can no longer meet the needs of modern data centers. Although the GPU liquid cooling technology currently on the market has a good cooling effect, the problem of energy consumption still exists, and some even consume more energy. Therefore, on the basis of ensuring a good cooling effect, reducing energy consumption is a technical difficulty that needs to be solved urgently. Summary of the invention

[0004] In view of this, an adaptive GPU liquid cooling device and a computing server cooling system are provided to solve the problem of server cooling and heat dissipation performance.

[0005] According to one aspect of an embodiment of the present application, an adaptive GPU liquid cooling device is disclosed, comprising:

[0006] A liquid cooling plate, the liquid cooling plate is attached to the GPU; the two ends of the liquid cooling plate are respectively provided with a cooling liquid inlet and an outlet, and a cooling liquid circulation channel is opened inside;

[0007] A limiting bracket, the limiting bracket is sleeved on the fixed shaft and rotatably arranged in the liquid cooling plate near the inlet of the coolant, and the limiting bracket is provided with a limiting member extending outward;

[0008] a baffle plate, wherein the baffle plate is rotatably fixed in a channel opened inside the liquid cooling plate through a rotating shaft and can dynamically abut against the limiting member; and

[0009] A spring, one end of which is connected to the baffle plate and the other end of which is fixed;

[0010] The coolant enters the channel through the inlet of the liquid cooling plate, and the opening angle of the baffle is adjusted to adapt to the change of the coolant flow rate caused by the GPU temperature. The spring adapts to the decrease of the coolant flow rate to pull the baffle back.

[0011] According to one aspect of the embodiment of the present application, it also includes a fixing column, which is fixed inside the liquid cooling plate and arranged opposite to the baffle plate; the other end of the spring is connected to the fixing column.

[0012] According to one aspect of the embodiment of the present application, the other end of the spring is connected to the limiting bracket.

[0013] According to one aspect of the embodiment of the present application, it also includes a manually adjustable rotating shaft, which is coaxially arranged with the limiting bracket and nested in the limiting bracket.

[0014] According to one aspect of the embodiment of the present application, it further includes an in-place switch, wherein the in-place switch is disposed in the liquid cooling plate;

[0015] The fixed position of the in-position switch in the liquid cooling plate is the position where the baffle opening angle is the largest.

[0016] According to one aspect of the embodiment of the present application, the channel has a narrow opening near the inlet and a wide opening near the outlet.

[0017] According to one aspect of an embodiment of the present application, a channel inlet for a coolant is provided at the inlet, and N coolant pipe outlets are provided at the outlet, where N is greater than or equal to 2; the coolant flow rate at the pipe outlet is equal to 1 / N of the coolant flow rate at the pipe inlet.

[0018] According to one aspect of the embodiments of the present application, the channel is S-shaped or has a circuitous structure connected by multiple pipes.

[0019] According to one aspect of the embodiment of the present application, the number of the limiting members is at least 2, and the length gradient of the limiting members becomes longer along the direction of flow of the coolant.

[0020] A computing server heat dissipation system includes: a server chassis, a power supply arranged in the server chassis, and the above-mentioned adaptive GPU liquid cooling device, wherein the power supply provides electrical energy to the adaptive GPU liquid cooling device and drives the adaptive GPU liquid cooling device to dissipate heat for the GPU.

[0021] The adaptive GPU liquid cooling device and computing power server heat dissipation system, the liquid cooling plate is fitted with the GPU, and a channel is provided inside, with the coolant inlet and outlet at both ends; the limit bracket is sleeved on the fixed shaft, and can be rotatably set in the liquid cooling plate near the inlet, and the limit bracket is provided with a limit member extending outward; the baffle is fixed in the channel by a rotating shaft, and can dynamically abut the limit member; one end of the spring is connected to the baffle, and the other end is fixed. The coolant flow rate adjusts the opening angle of the baffle as the GPU temperature changes, and the spring pulls the baffle to reset when the flow rate decreases, ensuring dynamic heat dissipation regulation. This solution combines the coolant flow rate regulation with the automatic reset design, giving full play to the sensitivity and efficiency of the adaptive adjustment of this solution, with cost, stability and applicability, and provides an efficient heat dissipation solution for high-performance GPU equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and other objects, features and advantages of the present application will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

[0023] Figure 1 A top view of an adaptive GPU liquid cooling device according to an embodiment of the present application is shown.

[0024] Figure 2 is based on Figure 1 A schematic diagram of partial structural decomposition of an adaptive GPU liquid cooling device according to an embodiment.

[0025] Figure 3 is based on Figure 1 A partial enlarged view of the adaptive GPU liquid cooling device shown in the corresponding embodiment.

[0026] Figure 4 is based on Figure 1 The corresponding embodiment shows a partially enlarged view of the adaptive GPU liquid cooling device from another perspective.

[0027] Figure 5 is based on Figure 1 A partial three-dimensional schematic diagram of an adaptive GPU liquid cooling device according to an embodiment of the present invention.

[0028] Figure 6 A top view of an adaptive GPU liquid cooling device according to another embodiment of the present application is shown.

[0029] Figure 7 is based on Figure 6 A schematic diagram of partial structural decomposition of an adaptive GPU liquid cooling device according to an embodiment.

[0030] Figure 8 is based on Figure 6 A schematic diagram of partial structural decomposition of an adaptive GPU liquid cooling device at an angle shown in a corresponding embodiment.

[0031] Fig. 9 is based on Figure 6 A schematic diagram of partial structural decomposition of an adaptive GPU liquid cooling device from another angle shown in the corresponding embodiment.

[0032] Fig.10 is based on Figure 6 A partial enlarged view of the adaptive GPU liquid cooling device shown in the corresponding embodiment.

[0033] Fig.11 A schematic diagram of the structure of a computing power server according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0034] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that the description of the present application will be more comprehensive and complete and the concepts of the example embodiments will be fully conveyed to those skilled in the art. The accompanying drawings are only schematic illustrations of the present application and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and thus their repeated description will be omitted.

[0035] In addition, the described features, structures or characteristics may be combined in one or more example embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the example embodiments of the present application. However, those skilled in the art will appreciate that the technical solution of the present application may be practiced while omitting one or more of the specific details, or other methods, components, steps, etc. may be adopted. In other cases, known structures, methods, implementations or operations are not shown or described in detail to avoid obscuring the present application and making the various aspects of the present application obscure.

[0036] Combined with Figures 1 to 10 , an adaptive GPU liquid cooling device, comprising:

[0037] The liquid cooling plate 1 is attached to the GPU. The two ends of the liquid cooling plate 1 are respectively provided with a cooling liquid inlet 11 and an outlet 12, and a cooling liquid circulation channel 13 is opened inside.

[0038] Specifically, the liquid cooling plate 1 is one of the key heat dissipation components in the GPU liquid cooling device. The coolant in the liquid cooling plate 1 is directly guided to the GPU surface, and the heat generated on the GPU surface is efficiently transferred outward by heat exchange, thereby reducing the temperature of the GPU and ensuring its stable operation under high load. The liquid cooling plate 1 is usually made of a high thermal conductivity material (such as copper, aluminum or alloy) to ensure high heat conduction efficiency.

[0039] Furthermore, the liquid cooling plate 1 is designed as a rectangular parallelepiped structure, and a channel for the circulation of the coolant is provided inside. The channel 13 is designed as a microchannel, and is narrow near the coolant inlet 11 and wide near the coolant outlet. The trumpet-shaped channel 13 is designed to reduce the flow rate of the coolant, allowing the coolant to fully exchange heat with the GPU surface, thereby improving the heat dissipation efficiency. Of course, the channel 13 can be designed as an S-shaped structure or a circuitous structure connected by multiple pipes. This design increases the contact area between the coolant and the GPU surface, thereby improving the heat exchange efficiency.

[0040] In other embodiments, a channel inlet for cooling liquid is provided at the inlet 11, and N channel outlets for cooling liquid are provided at the outlet 12, where N is greater than or equal to 2 channel outlets. The design of multiple channel outlets can make the cooling liquid more widely distributed to various parts that need cooling, thereby achieving a more comprehensive and uniform cooling effect.

[0041] In addition, the coolant flow rate at the channel outlet is equal to 1 / N of the coolant flow rate at the pipe inlet. Compared with the single outlet design, this ingenious design can evenly distribute the coolant flow rate to the paths of different pipe outlets, which is not only conducive to the smooth discharge of the coolant, but also can effectively reduce the pressure loss in the channel, reduce the resistance requirements for the coolant circulation system, and allow the coolant to flow more smoothly in the device.

[0042] The limiting bracket 2 is sleeved on the fixed shaft 7 and rotatably arranged in the liquid cooling plate 1 near the inlet 11 of the cooling liquid. The limiting bracket 2 is provided with a limiting member 21 extending outward.

[0043] Specifically, the limit bracket 2 is cylindrical and hollow inside in a circular ring shape. The fixed shaft 7 is fixedly arranged in the liquid cooling plate 1 near the inlet 11 of the coolant and near the entrance of the channel 13 by various connection methods such as riveting and welding. The limit bracket 2 is sleeved on the fixed shaft 7 and can rotate, which enhances the operational flexibility and adaptability. In addition, a limit member 21 extending outward is provided on the outer surface of the cylindrical limit bracket 2. The limit member 21 is a sheet-like long strip structure, which can effectively limit the rotation position of the external component.

[0044] The baffle plate 5 is rotatably fixed in the channel 13 opened inside the liquid cooling plate 1 through the rotating shaft 8 , and can dynamically abut against the limiting member 21 .

[0045] Specifically, the baffle plate 5 is in the shape of a long strip, with one end close to the rotating shaft 8 being wider and gradually narrowing outward to the other end being thinner. Of course, the size of the baffle plate 5 is adjusted according to the actual scenario. In the application scenario of this embodiment, the baffle plate 5 forms a channel 13 with different opening angles by rotating around the rotating shaft 8, which is used to adjust the flow rate of the coolant and realize the function of blocking or guiding the coolant.

[0046] Spring 3, one end of spring 3 is connected to baffle 5, and the other end is fixed. Specifically, spring 3 is a thin-diameter spring with a small elastic coefficient, so that when the coolant flows and generates thrust, stress deformation is generated on spring 3. One end of spring 3 is fixed to the inner wall of liquid cooling plate 1 or limit bracket 2 to form a fixed end, and the other end of spring 3 is connected to baffle 5. When the thrust of coolant on baffle 5 becomes smaller, that is, the flow rate of coolant becomes smaller, spring 3 pulls baffle 5 back through the restoring force of spring 3 until the dynamic equilibrium point where the thrust of coolant on baffle 5 is equal to the restoring force of spring 3.

[0047] Furthermore, the initial dynamic equilibrium position of the spring 3 matches 1.2 times the lower limit of the GPU standby temperature. For example, the standby temperature of the GPU is 30 to 50 degrees, and 1.2 times the lower limit of the standby temperature, that is, 36 degrees, is selected as the equilibrium temperature. Taking the flow rate of the coolant corresponding to the equilibrium temperature as a reference, the thrust corresponding to the flow rate of the coolant is the tension of the spring 3 corresponding to the opening angle of the baffle 5, and the position is anchored as the initial dynamic equilibrium position of the spring 3. The lower limit of the standby temperature is selected to take into account the minimum coolant flow required when the GPU is running at the minimum standby level, to avoid waste of coolant resources, and to ensure heat dissipation performance. The setting of 1.2 times of the minimum temperature mainly takes into account the individual differences between different GPUs. Some minimum temperatures may be 27, 28 degrees or 32, 33 degrees, etc. Setting 1.2 times of the minimum temperature can not only cover the minimum temperature of most GPUs in standby state, but also allow the spring 3 to be in a properly tensioned state, that is, 1.2 times of the minimum temperature corresponds to a larger coolant flow rate, and a larger thrust to the baffle 5. The state of the spring 3 is slightly tensioned than the equilibrium state, so that the spring 3 can make corresponding changes when subjected to slight changes in force, and has a higher responsiveness, thereby adaptively and accurately adjusting the baffle 5 to the appropriate position.

[0048] Based on this, the coolant enters the channel through the inlet of the liquid cooling plate 1, and the opening angle of the baffle 5 is adjusted to adapt to the change in the coolant flow rate caused by the GPU temperature. The spring 3 adaptively reduces the coolant flow rate to pull the baffle 5 back, thereby realizing adaptive adjustment and cooling of the GPU.

[0049] In the adaptive GPU liquid cooling device using this solution, the liquid cooling plate 5 is fitted with the GPU, and a channel 13 is provided inside, with a coolant inlet 11 and an outlet 12 at both ends; the limit bracket 2 is sleeved on the fixed shaft 7, and can be rotatably set in the liquid cooling plate 1 near the inlet 11, and the limit bracket 2 is provided with a limit member 21 extending outward; the baffle is fixed in the channel by a rotating shaft, and can dynamically abut the limit member; one end of the spring is connected to the baffle, and the other end is fixed. The coolant flow rate adjusts the opening angle of the baffle 5 as the GPU temperature changes, and the spring 3 pulls the baffle 5 to reset when the flow rate decreases, ensuring dynamic heat dissipation regulation. This solution combines the coolant flow rate regulation with the automatic reset design, giving full play to the sensitivity and efficiency of the adaptive adjustment of this solution, and providing efficient heat dissipation for high-performance GPU equipment.

[0050] Furthermore, this solution, through the linkage design of the spring 3 and the baffle 5, cleverly utilizes the thrust of the coolant and the restoring force of the spring 3 to construct a dynamic adjustment mechanism, which has the characteristics of high sensitivity, low cost and strong reliability, and can adaptively provide efficient and stable coolant flow for the liquid cooling device, thereby improving the cooling efficiency.

[0051] In addition, this solution uses basic components such as the limit bracket 2, the baffle 5, and the spring 3, which has a simple structure and low manufacturing and maintenance costs. Accurate heat dissipation regulation reduces equipment loss caused by overheating and extends the service life of the GPU and the equipment.

[0052] In one embodiment, the adaptive GPU liquid cooling device further includes a fixing column 9 , which is fixed inside the liquid cooling plate 1 and arranged opposite to the baffle plate 5 ; the other end of the spring 3 is connected to the fixing column 9 .

[0053] Specifically, the fixing column 9 is firmly installed at a preset position inside the liquid cooling plate 1, and the position is relatively arranged with the baffle plate 5. The fixing column 9 is made of high-strength metal and has good strength and thermal conductivity to ensure that it can withstand the corresponding coolant and the force of the spring 3 without deformation or displacement during the operation of the liquid cooling device, and also has good thermal conductivity.

[0054] In addition, the spring 3 connected to the fixed column 9 has one end connected to the connecting piece 51 extending outward from the baffle 5, and the other end is firmly connected to the fixed column 9. The spring 3 can move relatively according to the pressure change of the coolant inside the liquid cooling device on the baffle 5, and flexibly expand and contract to make the baffle 5 in a suitable position, adaptively adjust the flow rate of the coolant, and improve the utilization efficiency of the coolant. In other embodiments, in addition to the other end of the spring 3 being connected to the fixed column 9, it can also be connected to the limit bracket 2 to achieve the same technical effect.

[0055] In one embodiment, the adaptive GPU liquid cooling device further includes a manually adjustable shaft 4 , which is coaxially arranged with the limiting bracket 2 and nested in the limiting bracket 2 .

[0056] Specifically, there is a close coaxial arrangement between the manual adjustment shaft 4 and the limit bracket 2, and part of the manual adjustment shaft 4 is nested in the limit bracket 2, and the two are meshed with each other through the internally arranged threaded structure, or a rubber pad is added to improve the sealing. In addition, the main part of the manual adjustment shaft 4 is arranged on the outside of the liquid cooling plate 1, which is convenient for the user to turn the manual adjustment shaft 4, and the internal limit bracket 2 can be easily adjusted without complicated disassembly or special tools, which improves the operating efficiency and reduces the operating difficulty. It also enables the liquid cooling device to be adjusted in a timely and flexible manner according to actual needs during operation, enhances the adaptability and controllability of the entire liquid cooling device to different working conditions, and improves the stability and safety of GPU operation.

[0057] As a metal component, spring 3 will inevitably experience metal fatigue after long-term use. This will cause the elastic coefficient K and elastic limit of spring 3 to change, and then cause the initially set dynamic balance position to change. The traditional treatment method is to replace the entire liquid cooling plate 1 or ignore it. Replacement will increase costs, while ignoring it will lose the green energy saving and efficient energy saving advantages of the adaptive GPU liquid cooling device.

[0058] Based on this, for the structural design in which one end of the spring 3 is connected to the limit bracket 2, the rotating shaft 9 is manually adjusted by the knob to drive the spring 3 to rotate and make it stretch and deform, so that the tension of the spring 3 and the pressure of the coolant on the baffle 5 are rebalanced, thereby effectively restoring the normal working state of the liquid cooling device. The ingenious design of the manually adjustable rotating shaft 9 greatly increases the service life of the liquid cooling device of this solution, improves the cost performance of the product, and has high economic value.

[0059] In one embodiment, a sensor (not shown) is provided at the position where the baffle 5 rotates to the warning position. The warning position corresponds to the coolant flow rate generated by heat exchange and other factors at the temperature when the GPU is running at the warning temperature (for example, set at 100 degrees). The coolant flow rate acts on the baffle 5 to rotate it to a specific position. The specific position is the warning position, and the sensor is set at this position. The corresponding sensor type can be a pressure sensor. When the GPU is overloaded, the heat generation increases rapidly. Correspondingly, the coolant flows faster to take away more heat, and the position of the baffle 5 that drives the baffle 5 to rotate also changes adaptively. When the baffle 5 rotates to the warning position, the sensor is triggered, and the system can perform an autonomous forced shutdown operation, or send a warning instruction to the user, so as to achieve effective protection of the computing power server, avoid its performance being affected by overheating and other problems, and thus extend its service life.

[0060] In other embodiments, the adaptive GPU liquid cooling device further includes an in-place switch 6, which is disposed in the liquid cooling plate 1; the fixed position of the in-place switch 6 in the liquid cooling plate 1 is the position where the opening angle of the baffle plate 5 is the largest. This setting is made in consideration of special working conditions, such as an instantaneous high temperature of the GPU (the instantaneous temperature reaches 120 degrees), or a "gushing" phenomenon of the coolant due to unknown factors, rather than the high temperature caused by the normal overload operation of the GPU. When encountering such special circumstances, the coolant often has a high-speed flow, which can easily cause the baffle plate 5 to instantly twist too much, and thus may cause damage to the liquid cooling plate 1. By setting the in-place switch 6, the baffle plate 5 can be limited when the above-mentioned special circumstances occur, that is, when the opening angle of the baffle plate 5 tends to be the largest, to prevent the baffle plate 5 from being damaged due to excessive twisting, and at the same time, it also protects the liquid cooling plate 1.

[0061] In one embodiment, in combination with Figures 6 to 10 The limiting member 21 has a long sheet-like streamlined structure with specific shape characteristics, and the limiting member 21 converges from the starting end to the extending end, and the end is provided with an arc chamfer.

[0062] Specifically, the streamlined stopper 21 has a "wing"-like side surface, and is relatively wide at the starting end connected to the stopper bracket 2. The design of this wide connection end can provide a more stable structural foundation for the stopper 21; the other end of the stopper 21 is narrow, and the end is a circular arc chamfer, which is in "point contact" with the baffle 5. Compared with the traditional "surface contact", it significantly reduces the friction noise generated when contacting the baffle 5, and improves the user experience during the use of the liquid cooling device. The long strip-shaped streamlined stopper 21 is conducive to guiding the smooth flow of the fluid, reducing the eddy current and energy loss caused by the sudden turn of the coolant fluid, and can guide the coolant to flow more smoothly through the liquid cooling plate, improving the heat exchange efficiency.

[0063] In other embodiments, the number of the limiters 21 is at least 2, and the length of the limiters 21 is gradually lengthened along the direction of the coolant flow. Specifically, at different positions of the limiter bracket 2, a plurality of limiters 21 similar to "fan blades" are extended outward perpendicular to the axis of the limiter bracket 2. The length of the limiter 21 (similar to the structure of the fan blade) is gradually lengthened successively, and the limiters 21 of different lengths can be used to adjust the initial opening angle of the baffle 5, and then adjust the initial flow rate of the coolant, to achieve the blocking or guiding function of different flow rates of the coolant, and adapt to the initial temperature state of different GPU liquid cooling. In addition, when the initial flow rate of the coolant, the impact force generated by the different flow rates of the coolant on the limiter 21 makes the limiter 21 rotate freely, so as to achieve adaptive adjustment of the different initial opening angles of the baffle 5. At the same time, the limiter 21 is gradually lengthened along the direction of the coolant flow, because it is the same as the coolant flow direction, it is more convenient and labor-saving to adjust by manually adjusting the shaft 4.

[0064] Combined with Fig.11 Based on the above-mentioned adaptive GPU liquid cooling device, a computing power server heat dissipation system is also provided, including: a server chassis 100, a power supply (not shown) arranged in the server chassis, and an adaptive GPU liquid cooling device 200 as mentioned above, the power supply provides electrical energy to the adaptive GPU liquid cooling device 200, and drives the adaptive GPU liquid cooling device to dissipate GPU heat.

[0065] It should be noted that, although several modules or units of the equipment for action execution are mentioned in the above detailed description, this division is not mandatory. In fact, according to the embodiments of the present application, the features and functions of two or more modules or units described above can be embodied in one module or unit. On the contrary, the features and functions of one module or unit described above can be further divided into being embodied by multiple modules or units.

[0066] In addition, although the steps of the method in the present application are described in a specific order in the drawings, this does not require or imply that the steps must be performed in this specific order, or that all the steps shown must be performed to achieve the desired results. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step, and / or one step may be decomposed into multiple steps, etc.

[0067] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the appended claims.

Claims

1. An adaptive GPU liquid cooling device, characterized in that: include: A liquid cooling plate, the liquid cooling plate is attached to the GPU; the two ends of the liquid cooling plate are respectively provided with a cooling liquid inlet and an outlet, and a cooling liquid circulation channel is opened inside; A limiting bracket, the limiting bracket is sleeved on the fixed shaft and rotatably arranged in the liquid cooling plate near the inlet of the coolant, and the limiting bracket is provided with a limiting member extending outward; A baffle plate, which is rotatably fixed in a channel opened inside the liquid cooling plate through a rotating shaft and can dynamically abut against the limiting member; as well as A spring, one end of which is connected to the baffle plate and the other end of which is fixed; The coolant enters the channel through the inlet of the liquid cooling plate, and the opening angle of the baffle is adjusted to adapt to the change of the coolant flow rate caused by the GPU temperature. The spring adapts to the decrease of the coolant flow rate to pull the baffle back.

2. The adaptive GPU liquid cooling device according to claim 1, characterized in that: It also includes a fixing column, which is fixed inside the liquid cooling plate and arranged opposite to the baffle plate; the other end of the spring is connected to the fixing column.

3. The adaptive GPU liquid cooling device according to claim 1, characterized in that: The other end of the spring is connected to the limiting bracket.

4. The adaptive GPU liquid cooling device according to claim 2 or 3, characterized in that: It also includes a manually adjustable rotating shaft, which is coaxially arranged with the limiting bracket and nested in the limiting bracket.

5. The adaptive GPU liquid cooling device according to claim 4, characterized in that: It also includes an in-place switch, which is arranged in the liquid cooling plate; The fixed position of the in-position switch in the liquid cooling plate is the position where the baffle opening angle is the largest.

6. The adaptive GPU liquid cooling device according to claim 4, characterized in that: The passage has a narrow opening near the inlet and a wide opening near the outlet.

7. The adaptive GPU liquid cooling device according to claim 6, characterized in that: A channel inlet for a coolant is provided at the inlet, and N coolant pipe outlets are provided at the outlet, where N is greater than or equal to 2; the coolant flow rate at the pipe outlet is equal to 1 / N of the coolant flow rate at the pipe inlet.

8. The adaptive GPU liquid cooling device according to claim 4, characterized in that: The channel is S-shaped or has a circuitous structure connected by a plurality of pipes.

9. The adaptive GPU liquid cooling device according to claim 4, characterized in that: The number of the limiting members is at least 2, and the length gradient of the limiting members becomes longer along the direction of coolant flow.

10. A heat dissipation system for a computing server, characterized in that: include: A server chassis, a power supply arranged in the server chassis, and an adaptive GPU liquid cooling device as described in claims 1 to 3, wherein the power supply provides electrical energy for the adaptive GPU liquid cooling device and drives the adaptive GPU liquid cooling device to dissipate heat for the GPU.

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