Sectional type liquid cooling server heat dissipation water cooling plate

Abstract

The utility model discloses a sectional type liquid cooling server heat dissipation water cooling plate, which comprises a water cooling plate body, a water flow channel, a water inlet and a water outlet, the water flow channel is arranged in the water cooling plate body, the water flow channel is circularly distributed in the water cooling plate body in an S shape, one side of the water cooling plate body is provided with the water inlet and the water outlet, and the other side of the water cooling plate body is provided with the water inlet and the water outlet. Two ends of the water flow channel are respectively communicated with the water inlet and the water outlet; the water flow channel is formed by connecting multiple levels of capillary flow channels in series, a flow-equalizing and pressure-equalizing groove is longitudinally formed between every two adjacent sets of the multiple levels of capillary flow channels, and every two adjacent sets of the multiple levels of capillary flow channels are arranged in a staggered mode. The multi-stage capillary flow channel is formed by connecting at least two capillary flow channels in parallel, and the capillary flow channels are linear flow channels. A plurality of linear capillary runners are connected in parallel to form a multi-stage capillary runner, the multi-stage capillary runners are connected in series to form a water flow channel, the linear runners are beneficial to saving machining time and difficulty, meanwhile, turbulent flow is artificially increased due to staggered arrangement of adjacent runner groups, and the situation that the heat transfer efficiency is affected by the laminar flow effect generated by the simple linear runners is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation, and more particularly to a segmented liquid cooling server heat dissipation water cooling plate. Background Art

[0002] In today's era of continuous improvement in electronic device performance and the rapid development of high-density servers, the heat generated by these devices has become a key factor affecting their performance, stability, and lifespan. While traditional air cooling technology has addressed this issue to some extent, it is gradually becoming increasingly limited as chip thermal design power (TDP) continues to rise and devices pursue miniaturization and high performance. Liquid cooling, however, is becoming increasingly mainstream due to its advantages of high heat dissipation efficiency and low energy consumption, finding widespread application in numerous fields, including data centers, new energy, and 5G communications.

[0003] As a key branch of liquid cooling, water cooling offers exceptional heat dissipation, leveraging the fact that liquid dissipates heat much faster than air. A complete water cooling system typically consists of a water block, circulating fluid, a water pump, piping, and a water tank or heat exchanger. The water cooling plate (also known as a liquid cooling plate), a core component, plays a crucial role in the entire cooling system, absorbing heat from key heat-generating components such as the CPU, northbridge, and graphics card.

[0004] Although water-cooled heat dissipation technology has made significant progress, there are still some problems with the water-cooled plates in the prior art. In order to improve the heat dissipation performance of the water-cooled plate, the structure of the water-cooled plate has been optimized. Through complex flow channel design and structural design to enhance heat transfer, the heat dissipation efficiency has been improved, but the processing cost has also been increased. For example, the invention patent with patent application number 202311748975.8 discloses a multi-channel combined water-cooled plate, in which the water-cooling pipes include a water inlet pipe and a water outlet pipe. A connecting pipe is installed on the water inlet pipe and the water outlet pipe. A plurality of connected primary pipes and tertiary pipes are installed between the connecting pipes of the water inlet pipe and the water outlet pipe, and a connected secondary pipe is also installed on the primary pipe. The water flow is formed in the plate through multiple channels, so that it can form a certain density of coverage on the space inside the plate, thereby improving the heat dissipation efficiency. However, the multi-stage pipe structure is complex, the processing is difficult, and the processing cost is high. Utility Model Content

[0005] In order to obtain a water-cooling plate with excellent heat dissipation performance and low processing cost, the utility model proposes a segmented liquid-cooled server heat dissipation water-cooling plate, in which the water flow channel is composed of multiple levels of capillary flow channels connected in series, and adjacent multi-level capillary flow channels are staggered. The multi-level capillary flow channels are formed by connecting multiple straight capillary flow channels in parallel. The staggered arrangement of adjacent multi-level flow channel groups artificially increases turbulence. At the same time, the overall flow channel is straight, which reduces the difficulty and cost of flow channel processing.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A segmented liquid-cooled server heat dissipation water-cooling plate, comprising: a water-cooling plate body, a water flow channel, a water inlet, and a water outlet. A water flow channel is provided inside the water-cooling plate body, and the water flow channel is arranged in an S-shaped loop within the water-cooling plate body. The water inlet and the water outlet are provided on one side of the water-cooling plate body. One end of the water flow channel is connected to the water inlet, and the other end of the water flow channel is connected to the water outlet.

[0008] The water flow channel is formed by connecting multiple capillary channels in series, and a flow and pressure equalizing groove is longitudinally arranged between two adjacent groups of multi-stage capillary channels. The two adjacent groups of multi-stage capillary channels are staggered so that the flow channel positions between the two adjacent groups of multi-stage capillary channels are staggered.

[0009] The multi-stage capillary flow channel is formed by at least two capillary flow channels connected in parallel, and the capillary flow channel is a linear flow channel.

[0010] As a further improved technical solution of the present application, the multi-stage capillary flow channel is formed by five capillary flow channels connected in parallel.

[0011] As a further improved technical solution of the present application, the width of the flow and pressure equalizing groove is greater than or equal to the width of the capillary channel.

[0012] As a further improved technical solution of the present application, the water flow channel also includes a first-level water diversion chamber and a second-level water diversion chamber, and the first-level water diversion chamber is respectively arranged at the head end and the end end of the water flow channel; the second-level water diversion chamber is arranged in the bending area of ​​the water flow channel.

[0013] As a further improved technical solution of the present application, the cross-sections of the first-level water diversion chamber and the second-level water diversion chamber are rectangular.

[0014] As a further improved technical solution of the present application, the depth of the capillary flow channel is 15 mm. The depth of the capillary flow channel can be adjusted according to the water cooling heat dissipation power. As the depth decreases, the heat dissipation power decreases accordingly.

[0015] As a further improved technical solution of the present application, the length of the capillary flow channel is 60.5 mm, the width is 4 mm, and the width of the multi-stage capillary flow channel is 28 mm.

[0016] As a further improved technical solution of the present application, the water inlet and the water outlet are connected by a quick-insert connector or a threaded interface.

[0017] As a further improved technical solution of the present application, an arc protrusion for machining screw holes is provided on the multi-stage capillary flow channel.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] The present application provides a segmented liquid-cooled server heat dissipation water cold plate, which uses multiple stages of capillary flow channels connected in series to form an S-shaped water flow channel. The S-shaped water flow channel causes the coolant to form a turbulent mixing state during the flow process, breaking the laminar flow state of the coolant, and causing strong convection and disturbance inside the coolant. This turbulent mixing can accelerate heat transfer, allow the cold and hot fluids in the coolant to be fully mixed, and further improve the heat exchange efficiency.

[0020] The staggered arrangement of two adjacent sets of multi-stage capillary channels causes the flow channel positions between the two adjacent sets to be offset. If each flow channel of the multi-stage capillary channel is completely aligned, the liquid will easily flow preferentially along the shortest path with the least resistance (the capillary channel facing each other), resulting in insufficient liquid supply in other paths and a "short-circuiting effect." The staggered arrangement forces the liquid to diffuse laterally or redistribute to different capillary channels of the adjacent multi-stage capillary channel when flowing to the next multi-stage capillary channel in series. This helps the liquid to more evenly infiltrate and cover the multiple flow channels of the multi-stage capillary channel. By spatially offsetting the positions of multiple capillary channels in adjacent multi-stage capillary channels, the liquid is forced to diffuse laterally when flowing between layers, thereby significantly improving the uniformity of liquid distribution in the multi-stage capillary channel in series and maintaining efficient heat transfer.

[0021] In this solution, multiple straight capillary channels are connected in parallel to form multi-stage capillary channels. The straight channels are conducive to saving processing time. In this way, the processing difficulty and production time of the water-cooled plate are reduced. At the same time, the staggered arrangement of adjacent channel groups artificially increases turbulence, avoiding the laminar flow effect of simple straight channels that affects heat transfer efficiency.

[0022] A flow-equalizing and pressure-equalizing groove is longitudinally arranged between two adjacent groups of staggered multi-stage capillary flow channels. By combining the flow-equalizing and pressure-equalizing groove with the staggered arrangement, the staggered arrangement forces the liquid to diffuse laterally between the stages, but may aggravate flow turbulence; the flow-equalizing and pressure-equalizing groove provides a controlled buffer space for this diffusion, converting disordered diffusion into orderly distribution. The presence of the flow-equalizing and pressure-equalizing groove can ensure that the coolant flows at a stable speed and pressure in multiple capillary flow channels, avoiding the problem of local uneven heat dissipation caused by fluctuations in water flow speed and pressure, so that the water-cooling plate can always maintain stable heat dissipation performance during long-term operation, thereby extending the service life of electronic equipment and reducing the risk of equipment failure caused by unstable heat dissipation.

[0023] The first-level water distribution chamber set at the inlet and outlet of the S-shaped water flow channel allows the coolant entering and flowing out of the water-cooling plate body to be evenly diverted, while the second-level water distribution chamber allows the coolant to be evenly diverted when passing through the bending area of ​​the S-shaped water flow channel and then flow to the multi-stage capillary flow channel. This diversion design maintains the uniformity of coolant distribution in the entire S-shaped water flow channel, greatly increases the contact area between the coolant and the inner wall of the water-cooling plate, and enables the coolant to more fully absorb the heat transferred from the equipment to the water-cooling plate, significantly improving the heat exchange efficiency, effectively reducing the operating temperature of the electronic equipment, and ensuring its stable and efficient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is a schematic diagram of the three-dimensional structure of a segmented liquid-cooled server water cooling plate.

[0026] Figure 2 A side view of a segmented liquid-cooled server cooling water plate.

[0027] Figure 3 This is a schematic diagram of the internal structure of a segmented liquid-cooled server water cooling plate.

[0028] Figure 4 Schematic diagram of the staggered arrangement of two adjacent groups of multi-stage capillary channels at the water inlet.

[0029] Figure 5 for Figure 3 Schematic diagram of the locally enlarged structure at point A in the middle.

[0030] Figure 6 for Figure 3 Schematic diagram of the local enlarged structure at point B in the middle.

[0031] 100. Water-cooled plate body; 200. Water flow channel; 210. Multi-stage capillary flow channel; 211. Capillary flow channel; 220. Flow and pressure equalizing groove; 230. Primary water distribution cavity; 240. Secondary water distribution cavity; 250. Arc protrusion; 300. Water inlet; 400. Water outlet. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0033] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected", "connected", and "set" 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, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. The following describes an embodiment of this application based on its overall structure.

[0034] In addition, if there are descriptions involving "primary", "secondary", etc. in the embodiments of the present utility model, the descriptions of "primary", "secondary", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features.

[0035] See Figure 1-3 A segmented liquid cooling server heat dissipation water cooling plate includes: a water cooling plate body 100, a water flow channel 200, a water inlet 300, and a water outlet 400. The water flow channel 200 is arranged inside the water cooling plate body 100 in an S-shaped loop. The water inlet 300 and the water outlet 400 are arranged on one side of the water cooling plate body 100. One end of the water flow channel 200 is connected to the water inlet 300. The water flow channel 200 The other end is connected to the water outlet 400; the water flow channel 200 is composed of multi-stage capillary flow channels 210 connected in series, and a flow and pressure equalizing groove 220 is longitudinally arranged between two adjacent groups of multi-stage capillary flow channels 210, and the two adjacent groups of multi-stage capillary flow channels 210 are staggered, so that the flow channel positions between the two adjacent groups of multi-stage capillary flow channels 210 are staggered; the multi-stage capillary flow channel 210 is composed of at least two capillary flow channels 211 in parallel, and the capillary flow channel 211 is a straight flow channel.

[0036] In this embodiment, the water-cooling plate body 100 is made of a metal material with excellent thermal conductivity, such as pure copper, aluminum alloy, or a copper-aluminum composite. It is a flat plate that easily adheres to the surface of a heating device or heat exchanger. The water-cooling plate body 100 comprises an upper plate and a lower plate, brazed together to form a closed water flow channel 200.

[0037] The water flow channel 200 is composed of a multi-stage capillary flow channel 210 connected in series, and the multi-stage capillary flow channel 210 is composed of a plurality of linear capillary flow channels 211 connected in parallel. After the coolant enters the water inlet 300, it is diverted through the multi-stage capillary flow channel 210 to divide the water flow channel into multiple tributaries, and then passes through the equalizing flow and pressure trough 220 to enter the next multi-stage capillary flow channel 210 in series. In this embodiment, the two adjacent groups of multi-stage capillary flow channels 210 are staggered, so that the flow channel positions between the two adjacent groups of multi-stage capillary flow channels 210 are staggered.

[0038] A multi-stage capillary flow channel 210 is connected in series to form an S-shaped water flow channel 200. The S-shaped water flow channel 200 causes the coolant to form a turbulent mixing state during the flow process, breaking the laminar flow state of the coolant and causing strong convection and disturbance inside the coolant. This turbulent mixing can accelerate heat transfer, allowing the cold and hot fluids in the coolant to be fully mixed, and further improving the heat exchange efficiency.

[0039] In this solution, multiple straight capillary channels 211 are connected in parallel to form a multi-stage capillary channel 210. The straight channels are conducive to saving processing time. In this way, the processing difficulty and production time of the water-cooled plate are reduced. At the same time, the staggered arrangement of adjacent channel groups artificially increases turbulence, avoiding the laminar flow effect of simple straight channels that affects the heat transfer efficiency.

[0040] A flow-equalizing and pressure-equalizing groove 220 is longitudinally arranged between two adjacent groups of staggered multi-stage capillary channels 210. By combining the flow-equalizing and pressure-equalizing groove 220 with the staggered arrangement, the staggered arrangement forces the liquid to diffuse laterally between the stages, but may aggravate flow disorder; the flow-equalizing and pressure-equalizing groove 220 provides a controlled buffer space for such diffusion, converting disordered diffusion into orderly distribution. The presence of the flow-equalizing and pressure-equalizing groove 220 can ensure that the coolant flows at a stable speed and pressure in the multiple capillary channels 211, avoiding the problem of uneven local heat dissipation caused by fluctuations in water flow speed and pressure, so that the water-cooling plate can always maintain stable heat dissipation performance during long-term operation, thereby extending the service life of electronic equipment and reducing the risk of equipment failure caused by unstable heat dissipation.

[0041] In order to improve the cooling efficiency of the water cooling plate, the water flow channel 200 is formed by a multi-stage capillary flow channel 210 connected in series, and the multi-stage capillary flow channel 210 is formed by at least two linear capillary flow channels 211 connected in parallel. In this embodiment, Figure 3 As shown in FIG, the multi-stage capillary flow channel is formed by connecting five capillary flow channels in parallel.

[0042] In order to avoid the laminar flow effect caused by the simple straight flow channel affecting the heat transfer efficiency, two adjacent groups of multi-stage capillary flow channels 210 are staggered. The arrangement diagram of the two adjacent groups of multi-stage capillary flow channels 210 at the water inlet 300 is shown as follows: Figure 4As shown, the multi-stage capillary flow channel 210 is composed of 5 capillary flow channels 211 in parallel. After entering the water inlet 300, the coolant flows into the first group of 5 capillary flow channels 211 and then into the second group of 5 capillary flow channels 211. The flow direction of the coolant in the first group of 5 capillary flow channels 211 is shown by the blue arrow in the figure, and the flow direction of the coolant in the second group of 5 capillary flow channels 211 is shown by the red arrow in the figure. It can be seen from the direction of the blue arrow and the red arrow in the figure that the inlet of the 5 capillary flow channels 211 of the second group is offset in the vertical direction relative to the outlet of the 5 capillary flow channels 211 of the first group, and the 5 capillary flow channels of the two adjacent groups of multi-stage capillary flow channels 210 are not aligned in space.

[0043] The staggered arrangement of two adjacent sets of multi-stage capillary channels 210 causes the channel positions between the two adjacent sets of multi-stage capillary channels 210 to be offset. If each channel of the multi-stage capillary channels were perfectly aligned, the liquid would easily flow preferentially along the shortest path with the least resistance (the capillary channel facing each other), resulting in insufficient liquid supply in other paths and a "short-circuiting effect." However, the staggered arrangement forces the liquid to diffuse laterally or be redistributed to different capillary channels 211 of the adjacent multi-stage capillary channel 210 when flowing to the next multi-stage capillary channel 210 in series. This helps the liquid more evenly infiltrate and cover the multiple channels of the multi-stage capillary channel 210. By spatially offsetting the positions of the multiple capillary channels 211 in adjacent multi-stage capillary channels 210, the liquid is forced to diffuse laterally when flowing between layers, thereby significantly improving the uniformity of liquid distribution in the multi-stage capillary channels in series and maintaining efficient heat transfer.

[0044] A multi-stage capillary flow channel 210 is connected in series to form an S-shaped water flow channel 200. A flow-equalizing and pressure-equalizing groove 220 is provided between adjacent multi-stage capillary flow channels 210. In the S-shaped multi-stage capillary flow channels 210 connected in series, the flow-equalizing and pressure-equalizing groove 220 is a key transition structure connecting two adjacent groups of multi-stage capillary flow channels 210. Its core function is to solve the flow imbalance problem caused by sudden flow direction changes, uneven resistance, or local pressure drop when the multi-stage capillary flow channels 210 are connected in series by expanding the flow channel cross-sectional area and reconstructing the fluid path. In order to ensure that the coolant can achieve uniform flow rate and pressure in the flow-equalizing and pressure-equalizing groove 220, in this embodiment, the width of the flow-equalizing and pressure-equalizing groove 220 is greater than or equal to the width of the capillary flow channel 211.

[0045] The water flow channel 200 formed by the multi-stage capillary flow channel 210 in series is prone to flow velocity deviation at the coolant inlet and outlet and the bending area due to inertia, such as high flow velocity in the outer circle and low flow velocity in the inner circle, resulting in uneven distribution of the coolant when entering the next multi-stage capillary flow channel 210. In order to solve this problem, Figure 3As shown, in this embodiment, the water flow channel 200 also includes a primary water diversion chamber 230 and a secondary water diversion chamber 240. The primary water diversion chamber 230 is respectively arranged at the head end and the end end of the water flow channel 200, and the secondary water diversion chamber 240 is arranged in the bending area of ​​the water flow channel 200.

[0046] The first-level water distribution chamber 230 is used for global flow distribution, evenly distributing the inlet fluid to all branch flow channels (the head end), or summarizing the outflow fluid from each branch (the end); the second-level water distribution chamber 240 is used for local flow correction, eliminating the centrifugal effect of the S-shaped bend, resetting the fluid direction, and preventing uneven distribution.

[0047] The first-level water diversion chamber 230 is set at the head and end of the S-shaped water flow channel 200, that is, at the inlet and outlet of the coolant, so that the coolant entering and flowing out of the water-cooled plate body 100 can be evenly diverted, and the second-level water diversion chamber 240 allows the coolant to flow to the multi-stage capillary channel 210 after being evenly diverted when passing through the bending area of ​​the S-shaped water flow channel 200. This diversion design maintains the uniformity of the coolant distribution in the entire S-shaped water flow channel 200, greatly increases the contact area between the coolant and the inner wall of the water-cooled plate, and enables the coolant to more fully absorb the heat transferred from the equipment to the water-cooled plate, significantly improving the heat exchange efficiency, effectively reducing the operating temperature of the electronic equipment, and ensuring its stable and efficient operation.

[0048] Semicircular, semi-elliptical or trapezoidal are common water diversion chamber structures. In this embodiment, considering the difficulty of processing, the cross-sections of the first-level water diversion chamber and the second-level water diversion chamber are rectangular, such as Figure 5 、 Figure 6 The rectangular cavity can be directly formed by photolithography + etching (silicon / metal) or precision milling (copper / aluminum), without the need for complex surface processing, greatly reducing the processing difficulty and cost.

[0049] In another embodiment of the present application, the designed heat dissipation power is 10KW, and the depth of the horizontal linear capillary channel 211 is 15 mm. The depth of the capillary channel can be adjusted according to the water cooling heat dissipation power. As the depth decreases, the heat dissipation power decreases accordingly. A 4x diameter 4 mm milling cutter is used for processing, and 5 capillary channels are connected in parallel.

[0050] More specifically, the capillary flow channel 211 has a length of 60.5 mm and a width of 4 mm, and the width of the multi-stage capillary flow channel 210 is 28 mm.

[0051] In this embodiment, each capillary channel has a width of 4 mm and a length of 60.5 mm. Five capillary channels are connected in parallel to form a multi-stage capillary channel 210, each of which has a width of 28 mm and a length of 60.5 mm. The multi-stage capillary channels 210 are connected in series to form a water flow channel 200, which has a width of 28 mm and a length of 428 mm per section.

[0052] For ease of assembly, in this embodiment, the water inlet 300 and the water outlet 400 are connected using a quick-connect connector or a threaded connector. The water inlet 300 and the water outlet 400 are positioned on the same side of the water cooling plate body 100 and use a quick-connect connector or a threaded connector to facilitate connection to an external circulation pipeline.

[0053] like Figure 5 As shown, the multi-stage capillary flow channel 210 is provided with an arc protrusion 250 for processing screw holes. In this embodiment, the arc protrusion 250 is partially provided on the multi-stage capillary flow channel 210 for processing screw holes to prevent the screw holes from penetrating the capillary flow channel 211 and causing water leakage.

[0054] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A segmented liquid cooling server heat dissipation water cooling plate, characterized in that: include: A water-cooling plate body (100), a water flow channel (200), a water inlet (300), and a water outlet (400); a water flow channel (200) is provided inside the water-cooling plate body (100); the water flow channel (200) is arranged in an S-shaped loop inside the water-cooling plate body (100); the water inlet (300) and the water outlet (400) are provided on one side of the water-cooling plate body (100); one end of the water flow channel (200) is connected to the water inlet (300), and the other end of the water flow channel (200) is connected to the water outlet (400); The water flow channel (200) is formed by a series connection of multiple capillary flow channels (210), a flow and pressure equalizing groove (220) is longitudinally arranged between two adjacent groups of multi-stage capillary flow channels (210), and the two adjacent groups of multi-stage capillary flow channels (210) are staggered, so that the flow channel positions between the two adjacent groups of multi-stage capillary flow channels (210) are staggered; The multi-stage capillary flow channel (210) is formed by at least two capillary flow channels (211) connected in parallel, and the capillary flow channel (211) is a linear flow channel.

2. The segmented liquid cooling server heat dissipation water cooling plate according to claim 1, characterized in that: The multi-stage capillary flow channel (210) is formed by five capillary flow channels (211) connected in parallel.

3. The segmented liquid cooling server heat dissipation water cooling plate according to claim 2, characterized in that: The width of the flow and pressure equalizing groove (220) is greater than or equal to the width of the capillary flow channel (211).

4. The segmented liquid cooling server heat dissipation water cooling plate according to claim 3, characterized in that: The water flow channel (200) further comprises a primary water diversion chamber (230) and a secondary water diversion chamber (240), wherein the primary water diversion chamber (230) is respectively arranged at the head end and the tail end of the water flow channel (200); and the secondary water diversion chamber (240) is arranged in the bending region of the water flow channel (200).

5. The segmented liquid cooling server heat dissipation water cooling plate according to claim 4, characterized in that: The cross-sections of the first-level water diversion chamber (230) and the second-level water diversion chamber (240) are rectangular.

6. The segmented liquid cooling server heat dissipation water cooling plate according to claim 5, characterized in that: The depth of the capillary flow channel (211) is 15 mm. The depth of the capillary flow channel (211) can be adjusted according to the water cooling heat dissipation power. As the depth decreases, the heat dissipation power decreases accordingly.

7. The segmented liquid cooling server heat dissipation water cooling plate according to claim 6, characterized in that: The capillary flow channel (211) has a length of 60.5 mm and a width of 4 mm, and the multi-stage capillary flow channel (210) has a width of 28 mm.

8. The segmented liquid cooling server heat dissipation water cooling plate according to claim 1, characterized in that: The water inlet (300) and the water outlet (400) are connected using a quick-insert connector or a threaded interface.

9. The segmented liquid cooling server water cooling plate according to claim 1, characterized in that: A circular arc protrusion (250) for machining screw holes is provided on the multi-stage capillary flow channel (210).

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