Immersion liquid cooling units and data centers

Abstract

This invention relates to the field of server technology and discloses an immersion liquid cooling unit and a data center. The immersion liquid cooling unit includes an outer frame structure, an inner tank structure, inlet and outlet liquid pipes, and a server body. The outer frame structure includes an outer frame and side panels. The bottom of the outer frame has a first through-hole, and the side wall of the outer frame has a second through-hole. The side panels are correspondingly arranged with the second through-hole and are detachably connected to the side wall of the outer frame. The inner tank structure is disposed inside the outer frame. A gap is provided between the inner tank structure and the outer frame structure. The inlet and outlet liquid pipes are disposed in the gap between the outer frame structure and the inner tank structure and communicate with the inner tank structure. The inlet and outlet liquid pipes are used to connect to an underground cold source pipeline through the first through-hole or to an above-ground cold source pipeline through the second through-hole. The server body is disposed inside the inner tank structure. This invention enables flexible configuration according to different data center sites, infrastructure equipment, and budgets.

Description

Technical Field

[0001] This invention relates to the field of server technology, and more specifically to immersion liquid cooling units and data centers. Background Technology

[0002] With the continuous development of information technology, the demand for computing power in data centers is showing an increasing trend. When the rack power of data centers rises to over 15kW, traditional cooling methods such as room-level air conditioning and in-row air conditioning are insufficient to meet the growing cooling demands. Immersion liquid cooling technology, as a highly efficient and energy-saving cooling method, has become the development direction of new high-performance data centers due to its extreme energy efficiency and high reliability. However, when faced with different site conditions, budget constraints, and different application scenarios in data centers, the flexibility of server configuration has certain limitations. This not only weakens the adaptability of servers in different environments but also makes it difficult to meet the diverse needs of data centers. Summary of the Invention

[0003] In view of this, the present invention provides an immersion liquid cooling unit and a data center to solve the problem that server cooling systems lack sufficient design flexibility, which limits the adaptability of servers in different application scenarios and makes it difficult to meet diverse needs.

[0004] In a first aspect, the present invention provides an immersion liquid cooling unit, comprising an outer frame structure, an inner tank structure, inlet and outlet liquid pipes, and a server body; the outer frame structure includes an outer frame and side plates, a first through-hole is provided at the bottom of the outer frame, and a second through-hole is provided on the side wall of the outer frame; the side plates are correspondingly arranged with the second through-hole and are detachably connected to the side wall of the outer frame; the inner tank structure is disposed within the outer frame; a gap is provided between the inner tank structure and the outer frame structure; the inlet and outlet liquid pipes are disposed within the gap between the outer frame structure and the inner tank structure and communicate with the inner tank structure; the inlet and outlet liquid pipes are used to connect to an underground cold source pipe through the first through-hole, or to an above-ground cold source pipe through the second through-hole; the server body is disposed within the inner tank structure.

[0005] Because the bottom of the outer frame has a first through-hole, the inlet and outlet liquid pipes can be connected to the underground cold source pipes through the first through-hole, ensuring that the inlet and outlet liquid pipes are not exposed during use. This allows multiple immersion liquid cooling units to be arranged closely adjacent to each other, saving space. It is suitable for large data centers with complete immersion liquid cooling infrastructure planning, underground pipe networks, and a pursuit of low PUE (Power Usage Effectiveness) and low TCO (Total Cost of Ownership), requiring uninterrupted server operation and extremely high reliability. Because the side wall of the outer frame has a second through-hole, and the side plate is correspondingly set to the second through-hole and detachably connected to the side wall of the outer frame, the inlet and outlet liquid pipes are also not exposed. When the inlet and outlet liquid pipes are connected to the above-ground cold source pipes, the corresponding side plate can be removed, allowing the inlet and outlet liquid pipes to be connected to the above-ground cold source pipes through the second through-hole. This is suitable for medium and small-scale liquid cooling without floor-mounted underfloor piping deployments, enabling flexible configuration according to different data center site, infrastructure equipment, and budget.

[0006] In one optional embodiment, there are two sets of inlet and outlet pipelines, which are spaced apart; and the inlet and outlet pipelines are equipped with switch valves.

[0007] By configuring two sets of inlet and outlet liquid lines, redundancy is achieved. If one set fails, the other can continue operating normally, enhancing server reliability, reducing data center operational risks, and minimizing downtime maintenance costs. Furthermore, the presence of on / off valves on the inlet and outlet lines allows for flexible configuration, enabling either the connection of only one set to the external cooling source for optimal resource allocation and utilization, or the simultaneous activation of both sets to further enhance the cooling efficiency of the liquid cooling unit. This versatile configuration fully meets the specific needs of immersion liquid cooling units in various application scenarios, providing strong support for the stable operation of the data center.

[0008] In one optional embodiment, the inner liner structure further includes a return liquid chamber, which protrudes from one side of the inner liner structure, and both sets of inlet and outlet liquid pipes are located on the side where the return liquid chamber is located, and below the return liquid chamber.

[0009] By setting up a return liquid tank, coolant storage can be supported, ensuring that the liquid cooling circulation is not affected even when the server body is removed for maintenance or upgrades, thus guaranteeing the continuous and stable operation of the data center. The return liquid tank is protruding on one side of the inner tank structure, and the inlet and outlet pipes are located below the return liquid tank, which improves the space utilization rate inside the outer frame structure and optimizes the spatial layout.

[0010] In one optional embodiment, the bottom of the return liquid chamber is provided with a liquid outlet, and the inner liner structure also includes a filter box, which is located at the bottom of the return liquid chamber, and the liquid outlet is located at the location of the filter box and communicates with the filter box.

[0011] By installing a filter box, particulate matter can be effectively intercepted, preventing it from entering the inlet and outlet pipelines from the outlet. This avoids blockage caused by the accumulation of particulate matter in the pipeline, thereby ensuring stable pipeline pressure differential and smooth flow.

[0012] In one alternative embodiment, the inner liner structure further includes a filter frame disposed on top of the return liquid compartment.

[0013] By setting up a filter screen, particulate matter can be effectively intercepted, preventing it from entering the inlet and outlet pipelines from the outlet. This avoids blockage caused by the accumulation of particulate matter in the pipeline, thereby ensuring stable pipeline pressure differential and smooth flow.

[0014] In one alternative embodiment, the inner liner structure further includes a support assembly disposed inside the inner liner structure, comprising a first support and a second support, the first support and the second support being detachably connected to two inner sidewalls of the inner liner structure respectively; the two ends of the server body are respectively connected to the first support and the second support.

[0015] By setting up the bracket assembly, the server body can be securely installed in the inner shell structure. Since both the first and second brackets can be detachably connected to the inner wall of the inner shell structure, when it is necessary to replace the server body of different specifications, it is only necessary to remove the original first or second bracket as needed and replace it with a new bracket of the corresponding specifications to complete the installation and replacement of server bodies of different specifications. This reduces the adjustments made to the inner shell structure itself when replacing the server body and improves the convenience and efficiency of operation.

[0016] In one alternative embodiment, the inner liner structure further includes a first filling plate located inside the inner liner structure, adjacent to the server body, and detachably connected to the inner sidewall of the inner liner structure.

[0017] By setting up a first filler plate, the amount of coolant used in the inner tank structure can be effectively reduced while ensuring that the server body is completely submerged. This not only improves cooling efficiency but also saves resources. Furthermore, since the first filler plate is fixed to the inner wall of the inner tank structure using a detachable connection method, when it is necessary to replace the server body with a different size, it is only necessary to remove the original first filler plate and replace it with a new first filler plate of the corresponding size according to the specifications of the new server body. This reduces the adjustments and modifications made to the inner tank structure itself during the replacement process.

[0018] In one alternative embodiment, the inner liner structure further includes a second filling plate located inside the inner liner structure, adjacent to the server body, and detachably connected to the bottom wall of the inner liner structure.

[0019] By installing a second filler plate, the amount of coolant used in the inner tank structure can be effectively reduced while ensuring that the server body is completely submerged. This not only improves cooling efficiency but also saves resources. Furthermore, since the second filler plate is fixed to the bottom wall of the inner tank structure using a detachable connection method, when it is necessary to replace the server body with a different size, it is only necessary to remove the original second filler plate and replace it with a new second filler plate of the corresponding size according to the specifications of the new server body. This reduces the adjustments and modifications made to the inner tank structure itself during the replacement process.

[0020] In one optional embodiment, the inner liner structure further includes a sealing strip, a connection status indicator light, and a limit switch; the sealing strip is located at the top opening of the inner liner structure and is fixed to the inner liner structure; the limit switch is located below the sealing strip and is fixed to the inner wall of the inner liner structure; the connection status indicator light is located below the sealing strip, adjacent to the limit switch, electrically connected to the limit switch, and fixed to the inner wall of the inner liner structure; the immersion liquid cooling unit further includes an upper cover assembly, which includes a cover plate and an observation window; one side of the cover plate is hinged to the inner liner structure, and the other side has a connection position for connecting to the inner liner structure and a separation position for separating from the inner liner structure; and the side of the cover plate facing the inner liner structure has a protrusion; when the other side of the cover plate is in the connection position, the protrusion abuts against the limit switch, and the limit switch controls the connection status indicator light to be in a first indicating state; when the other side of the cover plate is in the separation position, the protrusion separates from the limit switch, and the limit switch controls the connection status indicator light to be in a second indicating state; the observation window is located on the cover plate.

[0021] By incorporating a sealing strip, when the other side of the cover plate is connected to the inner tank structure, the sealing strip on the surface of the inner tank structure is pressed tightly, forming a sealed cavity between the cover plate and the inner tank structure. This prevents the coolant inside the inner tank structure from evaporating and also prevents external impurities from entering the inner tank structure, thus ensuring the purity of the coolant and the stable operation of the system. Because a limit switch is located below the sealing strip, the protrusion on the cover plate will only contact the limit switch when the cover plate and the inner tank structure are completely sealed, ensuring that the limit switch is activated only when the cover plate is correctly closed. Since the limit switch is electrically connected to the connection status indicator light, the status of the connection status indicator light can be observed to visually determine whether the cover plate is properly closed. Furthermore, an observation window is provided on the cover plate, which not only facilitates observation of the connection status indicator light to ensure normal system operation but also meets the needs for real-time observation of the server's main operating status and real-time monitoring of the coolant status within the inner tank structure.

[0022] In one alternative embodiment, the top cover assembly further includes a reflux channel disposed on the cover plate, located on the side where the cover plate is hinged to the inner liner structure, and the distance between the reflux channel wall and the cover plate gradually decreases as it approaches the side where the cover plate is hinged to the inner liner structure.

[0023] Because the return channel is located on the side where the cover plate and the inner liner structure are hinged, when the cover plate is opened, the condensed liquid on it can naturally flow back into the return channel. As the distance between the channel wall and the cover plate gradually decreases towards the side where the cover plate and the inner liner structure are hinged, it ensures that when the cover plate is closed again, the coolant accumulated in the return channel can smoothly flow back into the inner liner structure. This effectively avoids the outflow of coolant, thereby reducing coolant waste and preventing potential pollution of the surrounding environment by coolant. It improves resource utilization efficiency and protects the cleanliness and safety of the environment.

[0024] Secondly, the present invention also provides a data center, including a liquid cooling distribution unit and the above-mentioned immersion liquid cooling unit, wherein the two sides of the immersion liquid cooling unit are respectively connected to two sets of liquid cooling distribution units.

[0025] By connecting two independent liquid cooling distribution units to both sides of the immersion liquid cooling unit, redundant configuration of the liquid cooling distribution unit is achieved. When one set of liquid cooling distribution units needs to be inspected or maintained, it can be switched to the other set of liquid cooling distribution units to continue to provide cooling services to the immersion liquid cooling unit, thereby ensuring that the continuous operation of the server body is not affected. This not only improves the reliability and stability of the system, but also provides greater operational flexibility and convenience for inspection and maintenance.

[0026] In one optional embodiment, the liquid cooling distribution unit includes a housing assembly, a liquid storage box, a heat exchanger, and at least two submersible pumps; the liquid storage box is disposed within the housing assembly; and the bottom of the liquid storage box is connected to the liquid outlet pipe of the submersible liquid cooling unit via an inlet pipe; the heat exchanger is disposed within the housing assembly, located below the liquid storage box, and is used to connect to an external cold source; and the heat exchanger is connected to the liquid storage box via a secondary side inlet pipe, and connected to the liquid inlet pipe of the submersible liquid cooling unit via a secondary side outlet pipe; at least two submersible pumps are disposed within the liquid storage box.

[0027] Because the heat exchanger is installed below the liquid storage box, the design volume of the liquid cooling distribution unit is mainly limited by the size of the heat exchanger, effectively reducing the overall volume of the liquid cooling distribution unit and making it more compact. The setting of at least two submersible pumps ensures that even if one submersible pump fails, the other submersible pump can immediately take over and continue to provide stable liquid circulation to the system, thereby greatly improving the reliability and stability of the entire liquid cooling system and enhancing the system's fault tolerance and continuous operation capability.

[0028] In one optional embodiment, a set of liquid-cooled distribution units is connected to two sets of immersion liquid-cooled units, which are respectively arranged on both sides of the liquid-cooled distribution unit; the inlet pipe includes an inlet main pipe, a first inlet branch pipe and a second inlet branch pipe; the inlet main pipe is connected to a liquid storage box; the first inlet branch pipe and the second inlet branch pipe are respectively arranged on both sides of the inlet main pipe and are respectively connected to the liquid outlet pipes of the two adjacent sets of immersion liquid-cooled units; the secondary side water outlet pipe includes a water outlet main pipe, a first water outlet branch pipe and a second water outlet branch pipe; the water outlet main pipe is connected to a heat exchanger; the first water outlet branch pipe and the second water outlet branch pipe are respectively arranged on both sides of the water outlet main pipe and are respectively connected to the liquid inlet pipes of the two adjacent sets of immersion liquid-cooled units.

[0029] By setting up the first inlet branch pipe, the second inlet branch pipe, the first outlet branch pipe, and the second outlet branch pipe, a set of liquid cooling distribution units can be connected to two sets of immersion liquid cooling units at the same time. This not only improves the flexibility of the liquid cooling system, but also ensures that the coolant can flow efficiently and orderly between the liquid cooling distribution unit and the immersion liquid cooling unit, thereby meeting the cooling needs in complex application scenarios. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of the present invention, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1This is a schematic diagram illustrating the deployment of an immersion liquid cooling unit and a liquid cooling distribution unit according to an embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram illustrating another deployment of the immersion liquid cooling unit and the liquid cooling distribution unit according to an embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram illustrating another deployment of the immersion liquid cooling unit and the liquid cooling distribution unit according to an embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram showing the deployment of the immersion liquid cooling unit and the underground cold source pipeline in an embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of the inner liner structure according to an embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of the outer frame structure according to an embodiment of the present invention;

[0037] Figure 7 This is a schematic diagram of the outer frame structure according to an embodiment of the present invention;

[0038] Figure 8 This is a perspective view of the inner liner structure according to an embodiment of the present invention;

[0039] Figure 9 This is a schematic diagram of the internal structure of the inner liner structure according to an embodiment of the present invention;

[0040] Figure 10 This is a schematic diagram of the internal structure of the inner liner structure from another perspective according to an embodiment of the present invention;

[0041] Figure 11 This is a schematic diagram of the internal structure of the inner liner structure from another perspective according to an embodiment of the present invention.

[0042] Figure 12 This is a schematic diagram of the upper cover assembly according to an embodiment of the present invention;

[0043] Figure 13 This is a schematic diagram of the overall structure of the immersion liquid cooling unit according to an embodiment of the present invention;

[0044] Figure 14 This is a schematic diagram of the connection between the liquid cooling distribution unit and the two sets of immersion liquid cooling units in an embodiment of the present invention;

[0045] Figure 15 This is a schematic diagram of the overall structure of the liquid-cooled distribution unit according to an embodiment of the present invention;

[0046] Figure 16 This is a schematic diagram of the internal structure of the liquid-cooled distribution unit according to an embodiment of the present invention;

[0047] Figure 17 This is a schematic diagram of the installation structure of a submersible pump according to an embodiment of the present invention;

[0048] Figure 18 This is a schematic diagram of the connection between the liquid storage box and the heat exchanger in an embodiment of the present invention.

[0049] Explanation of reference numerals in the attached figures:

[0050] 1. Outer frame structure; 101. Outer frame; 102. Side panel; 103. Roller support; 104. Fixing bracket; 105. Fixing plate; 106. Cable management plate; 107. Power distribution unit; 108. Filter adapter frame; 2. Inner tank structure; 201. Return liquid tank; 202. Filter box; 203. Filter screen frame; 204. Support assembly; 2041. First support; 2042. Second support; 205. First filling plate; 206. 2. Filler plate; 207. Sealing strip; 208. Connection status indicator light; 209. Limit switch; 210. Liquid distribution main pipe; 211. Flow equalization pipe; 212. Metal hose; 213. Exhaust valve; 214. Drain valve; 215. Fiber optic connector; 216. Electrical connector; 217. Desiccant box; 218. First liquid level gauge; 219. Second liquid level gauge; 220. Liquid level sensor; 3. Inlet and outlet pipes; 301. Inlet pipe; 30 2. Liquid outlet pipeline; 4. Server main body; 5. Top cover assembly; 501. Cover plate; 502. Observation window; 503. Return channel; 504. Pneumatic support rod; 505. Handle; 506. Locking buckle; 6. Liquid cooling distribution unit; 6011. Shell frame; 6012. First mounting plate; 6013. Second mounting plate; 6014. Fixing box; 6015. First mounting bracket; 6016. Second mounting bracket; 6017. Third mounting bracket; 6018. Display screen; 6019. Electrical control box; 602. Liquid storage box; 603. Inlet pipe; 6031. Main inlet pipe; 6032. First inlet branch pipe; 6033. Second inlet branch pipe; 604. Heat exchanger; 605. Secondary side water inlet pipe; 606. Secondary side water outlet pipe; 6061. Main outlet pipe; 6062. First outlet branch pipe; 6063. Second outlet branch pipe; 607. Submersible pump; 608. Primary side circulation pipe. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] The following is combined Figures 1 to 18 The following describes embodiments of the present invention.

[0053] According to an embodiment of the present invention, an immersion liquid cooling unit is provided, comprising an outer frame structure 1, an inner tank structure 2, inlet and outlet liquid pipes 3, and a server body 4; the outer frame structure 1 includes an outer frame 101 and a side plate 102, the bottom of the outer frame 101 is provided with a first through-hole, and the side wall of the outer frame 101 is provided with a second through-hole; the side plate 102 is correspondingly provided with the second through-hole and is detachably connected to the side wall of the outer frame 101; the inner tank structure 2 is disposed inside the outer frame 101; a gap is provided between the inner tank structure 2 and the outer frame structure 1; the inlet and outlet liquid pipes 3 are disposed in the gap between the outer frame structure 1 and the inner tank structure 2 and communicate with the inner tank structure 2; the inlet and outlet liquid pipes 3 are used to connect to an underground cold source pipe through the first through-hole, or to an above-ground cold source pipe through the second through-hole; the server body 4 is disposed inside the inner tank structure 2.

[0054] Because the bottom of the outer frame 101 is provided with a first through-hole, the inlet and outlet liquid pipes 3 can be connected to the underground cold source pipes through the first through-hole, so that the inlet and outlet liquid pipes 3 are not exposed when in use, allowing multiple immersion liquid cooling units to be arranged closely adjacent to each other, saving space. It is suitable for use in large data centers with complete immersion liquid cooling infrastructure planning, underground pipe networks, pursuing low PUE (a metric for evaluating the energy efficiency of data centers), low TCO (total cost), requiring uninterrupted operation of servers, and demanding extremely high reliability. Because the outer frame 101 has a second through-hole on its side wall, and the side plate 102 is correspondingly set to the second through-hole and detachably connected to the side wall of the outer frame 101, the inlet and outlet liquid pipes 3 are not exposed. When the inlet and outlet liquid pipes 3 are connected to the ground cold source pipes, the corresponding side plate 102 can be removed, so that the inlet and outlet liquid pipes 3 can be connected to the ground cold source pipes through the second through-hole. This is suitable for medium and small-scale liquid cooling underfloor piping solutions and allows for flexible configuration based on different data center sites, infrastructure equipment, and budgets.

[0055] In a specific embodiment, four side panels 102 are provided, and the four side panels 102 are respectively connected to the four side walls of the outer frame 101 by quick-release buckles or quick-release screws; the bottom of the outer frame 101 is provided with four roller support feet 103; the outer frame 101 is provided with structural components such as fixing bracket 104, fixing plate 105 and cable management plate 106, the fixing bracket 104 is used to fix the power distribution unit 107; the fixing plate 105 is used to fix the network port adapter 108.

[0056] Specifically, the inner liner structure 2 can be assembled as an independent integral structure into the outer frame 101 component.

[0057] In one embodiment, there are two sets of inlet and outlet liquid lines 3, which are spaced apart; and the inlet and outlet liquid lines 3 are equipped with switch valves.

[0058] By configuring two sets of inlet / outlet liquid lines 3, redundancy is achieved. If one set of inlet / outlet liquid lines 3 fails, the other set can still operate normally, enhancing server reliability, reducing data center operational risks, and minimizing costs associated with downtime maintenance. Furthermore, because the inlet / outlet liquid lines 3 are equipped with on / off valves, it is possible to choose to open only one set of inlet / outlet liquid lines 3 to connect to the external cold source, achieving rational resource allocation and utilization; or to simultaneously activate both sets of inlet / outlet liquid lines 3 to further improve the heat dissipation efficiency of the liquid cooling unit. This versatile configuration fully meets the specific needs of immersion liquid cooling units in different application scenarios, providing strong support for the stable operation of the data center.

[0059] In a specific implementation, the inlet and outlet pipeline 3 includes an inlet pipeline 301 and an outlet pipeline 302. The inlet pipeline 301 is equipped with an inlet ball valve, and the outlet pipeline 302 is equipped with a return ball valve.

[0060] In one embodiment, the inner liner structure 2 further includes a return liquid chamber 201, which protrudes from one side of the inner liner structure 2, and both sets of inlet and outlet liquid pipes 3 are located on the side where the return liquid chamber 201 is located, and below the return liquid chamber 201.

[0061] By setting up the return liquid tank 201, the coolant can be stored, ensuring that the liquid cooling circulation is not affected even when the server body 4 is removed for maintenance or upgrades, thus guaranteeing the continuous and stable operation of the data center. The return liquid tank 201 is protruding on one side of the inner liner structure 2, and the inlet and outlet pipes 3 are located below the return liquid tank 201, which improves the space utilization rate inside the outer frame structure 1 and optimizes the space layout.

[0062] In one embodiment, the bottom of the return liquid chamber 201 is provided with a liquid outlet, and the inner liner structure 2 also includes a filter box 202. The filter box 202 is located at the bottom of the return liquid chamber 201, and the liquid outlet is located at the location of the filter box 202 and communicates with the filter box 202.

[0063] By setting up the filter box 202, particulate matter can be effectively intercepted, preventing it from entering the inlet and outlet pipes 3 from the outlet. This avoids the blockage caused by the accumulation of particulate matter in the pipes, thereby ensuring the stability of the pipe pressure differential and the smooth flow.

[0064] In one embodiment, the inner liner structure 2 further includes a filter frame 203, which is disposed on top of the return liquid chamber 201.

[0065] By setting up the filter screen 203, particulate matter can be effectively intercepted and prevented from entering the inlet and outlet pipes 3 from the outlet. This avoids the blockage caused by the accumulation of particulate matter in the pipes, thereby ensuring the stability of the pipe pressure difference and the smooth flow.

[0066] In a specific implementation, the filter frame 203 is connected to the return liquid chamber 201 via a quick-release structure, and can be replaced periodically.

[0067] Specifically, filter box 202 and filter frame 203 can filter particles larger than 0.5mm.

[0068] In one embodiment, the inner liner structure 2 further includes a support assembly 204, which is disposed inside the inner liner structure 2 and includes a first support 2041 and a second support 2042. The first support 2041 and the second support 2042 are detachably connected to the two inner sidewalls of the inner liner structure 2, respectively. The two ends of the server body 4 are connected to the first support 2041 and the second support 2042, respectively.

[0069] By setting the bracket assembly 204, the server body 4 can be securely installed in the inner shell structure 2. Since the first bracket 2041 and the second bracket 2042 can be detachably connected to the inner wall of the inner shell structure 2, when it is necessary to replace the server body 4 of different specifications, it is only necessary to remove the original first bracket 2041 or the second bracket 2042 as needed and replace it with a new bracket of the corresponding specification to complete the installation and replacement of the server body 4 of different specifications. This reduces the adjustments made to the inner shell structure 2 itself when replacing the server body 4 and improves the convenience and efficiency of operation.

[0070] In one embodiment, the inner liner structure 2 further includes a first filling plate 205, which is located inside the inner liner structure 2, adjacent to the server body 4, and detachably connected to the inner sidewall of the inner liner structure 2.

[0071] By setting the first filling plate 205, the amount of coolant used in the inner tank structure 2 can be effectively reduced while ensuring that the server body 4 is completely submerged. This not only improves cooling efficiency but also saves resources. Furthermore, since the first filling plate 205 is fixed to the inner wall of the inner tank structure 2 using a detachable connection method, when it is necessary to replace the server body 4 with a different size, it is only necessary to remove the original first filling plate 205 and replace it with a new first filling plate 205 of the corresponding size according to the specifications of the new server body 4. This reduces the adjustments and modifications made to the inner tank structure 2 itself during the replacement process.

[0072] In one embodiment, the inner liner structure 2 further includes a second filling plate 206, which is located inside the inner liner structure 2, adjacent to the server body 4, and detachably connected to the bottom wall of the inner liner structure 2.

[0073] By setting the second filling plate 206, the amount of coolant used in the inner tank structure 2 can be effectively reduced while ensuring that the server body 4 is completely submerged. This not only improves cooling efficiency but also saves resources. Furthermore, since the second filling plate 206 is fixed to the bottom wall of the inner tank structure 2 using a detachable connection method, when it is necessary to replace the server body 4 with a different size, it is only necessary to remove the original second filling plate 206 and replace it with a new second filling plate 206 of the corresponding size according to the specifications of the new server body 4. This reduces the adjustments and modifications made to the inner tank structure 2 itself during the replacement process.

[0074] In a specific embodiment, the inner liner structure 2 includes a liquid distribution main pipe 210 and multiple sets of flow equalization pipes 211. The liquid distribution main pipe 210 is fixed on the inner wall of the inner liner structure 2. Both ports of the liquid distribution main pipe 210 are located at the top of the inner liner structure 2 and are respectively connected to two liquid inlet pipes 301. The port of the liquid distribution main pipe 210 is located on the side where the return liquid chamber 201 is located, above the return liquid chamber 201. The bottom of the return liquid chamber 201 is provided with a through hole, one end of the liquid inlet pipe 301 is located below the return liquid chamber 201, and the other end passes through the through hole and connects to the port of the liquid distribution main pipe 210. The pipe body of the liquid distribution main pipe 210 extends from the top of the inner liner structure 2 to the bottom of the inner liner structure 2. Multiple sets of flow equalization pipes 211 are arranged sequentially at intervals at the bottom of the inner liner structure 2 and are connected to the liquid distribution main pipe 210. The flow equalization pipes 211 are provided with multiple drain ports.

[0075] Specifically, the liquid inlet pipe 301 is connected to the liquid distribution main pipe 210 via a metal flexible hose 212.

[0076] In a specific embodiment, the liquid distribution main pipe 210 includes two first branch pipes, two second branch pipes, and two third branch pipes. The two first branch pipes are located at the top of the inner liner structure 2 and are respectively arranged on the two inner side walls of the inner liner structure 2 along the first direction. One end of the first branch pipe is connected to the corresponding liquid inlet pipe 301, and the other end extends along the second direction to the middle position of the inner side wall. The two second branch pipes are respectively arranged on the two inner side walls of the inner liner structure 2 along the first direction. One end of the second branch pipe is connected to the corresponding first branch pipe, and the other end extends along the third direction to the bottom of the inner liner structure 2. The third branch pipe is arranged at the bottom of the inner liner structure 2, and both ends are connected to the two second branch pipes respectively. Multiple sets of flow equalization pipes 211 are arranged sequentially at intervals along the first direction, and flow equalization pipes 211 are provided on both sides of the third branch pipe along the second direction.

[0077] Specifically, the second branch pipe is provided with two first filling plates 205 on both sides along the second direction; the flow equalization pipe 211 is provided with two second filling plates 206 on both sides along the first direction.

[0078] In a specific implementation, an exhaust valve 213 is provided at the top of the first branch pipe to facilitate the removal of residual gas in the liquid distribution main pipe 210.

[0079] In a specific implementation, the bottom of the inner liner structure 2 is provided with a drain valve 214, which can drain all the coolant in the inner liner structure 2, and at the same time replenish the coolant in the inner liner structure 2.

[0080] In one embodiment, the inner liner structure 2 further includes a sealing strip 207, a connection status indicator 208, and a limit switch 209; the sealing strip 207 is located at the top opening of the inner liner structure 2 and is fixed to the inner liner structure 2; the limit switch 209 is located below the sealing strip 207 and is fixed to the inner wall of the inner liner structure 2; the connection status indicator 208 is located below the sealing strip 207, adjacent to the limit switch 209, electrically connected to the limit switch 209, and fixed to the inner wall of the inner liner structure 2; the immersion liquid cooling unit also includes an upper cover assembly 5, which includes a cover plate 501 and an observation window 502. The cover plate 501 is hinged to the inner liner structure 2 on one side, and has a connection position for connecting to the inner liner structure 2 and a separation position for separating from the inner liner structure 2 on the other side; and the cover plate 501 has a protrusion on the side facing the inner liner structure 2; when the other side of the cover plate 501 is in the connection position, the protrusion abuts against the limit switch 209, and the limit switch 209 controls the connection status indicator light 208 to be in the first indication state; when the other side of the cover plate 501 is in the separation position, the protrusion separates from the limit switch 209, and the limit switch 209 controls the connection status indicator light 208 to be in the second indication state; the observation window 502 is provided on the cover plate 501.

[0081] By setting a sealing strip 207, when the other side of the cover plate 501 is connected to the inner liner structure 2, the sealing strip 207 on the surface of the inner liner structure 2 is pressed tightly, and the cover plate 501 and the inner liner structure 2 can form a closed cavity, preventing the coolant inside the inner liner structure 2 from evaporating, and also preventing external impurities from entering the inner liner structure 2, thereby ensuring the purity of the coolant and the stable operation of the system; since a limit switch 209 is set below the sealing strip 207, the protrusion on the cover plate 501 will only contact the limit switch 209 after the cover plate 501 and the inner liner structure 2 are completely sealed, ensuring that only The limit switch 209 will only be activated when the cover plate 501 is properly closed. Since the limit switch 209 is electrically connected to the connection status indicator 208, the status of the connection status indicator 208 can be used to visually determine whether the cover plate 501 is properly closed. The observation window 502 on the cover plate 501 not only facilitates the observation of the status of the connection status indicator 208 at any time to ensure the normal operation of the system, but also meets the needs for real-time observation of the operation of the server body 4 and real-time monitoring of the coolant status in the inner tank structure 2.

[0082] In a specific implementation, the observation window 502 can be a transparent glass window.

[0083] In a specific implementation, the cover plate 501 is provided with two pneumatic support rods 504. The two pneumatic support rods 504 are arranged opposite to each other on both sides of the cover plate 501, and are adjacent to the side of the cover plate 501 that is hinged to the inner liner structure 2. The two ends of the pneumatic support rods 504 are respectively connected to the cover plate 501 and the inner liner assembly. By providing the pneumatic support rods 504, mechanical assistance can be provided to facilitate the operator to open and close the cover plate 501.

[0084] In a specific implementation, a handle 505 is also provided on the cover plate 501. The handle 505 is located away from the side where the cover plate 501 is hinged to the inner liner structure 2, so as to facilitate the operator to open and close the cover plate 501.

[0085] In a specific implementation, one side of the cover plate 501 is connected to the inner liner structure 2 via a hinge, and the other side is connected to the outer wall of the outer frame structure 1 via a locking buckle 506.

[0086] In a specific implementation, when the cover plate 501 is closed, the protrusion presses against the limit switch 209, and the connection status indicator 208 turns blue-green. When the cover plate 501 is open, the protrusion and the limit switch 209 are separated, and the connection status indicator 208 turns white.

[0087] Specifically, the sealing strip 207 is detachably installed on the inner liner structure 2, and the sealing strip 207 can be maintained or replaced when the cover plate 501 is opened.

[0088] In a specific implementation, the inner wall of the inner liner structure 2 is equipped with a fiber optic connector 215 and an electrical connector 216 to support field access of fiber optic cables and cables.

[0089] In a specific implementation, the inner tank structure 2 includes a liquid phase zone and a gas phase zone arranged sequentially. The gas phase zone is located on the side near the opening of the inner tank structure 2, and the server body 4 is located in the liquid phase zone. The connection status indicator light 208 and the limit switch 209 are both located in the gas phase zone, and a desiccant box 217 is provided in the gas phase zone. By providing the desiccant box 217, moisture or excess water that may enter the inner tank structure 2 can be absorbed and removed, ensuring that the coolant does not contain water exceeding the saturation point during use, keeping the coolant in a dry state, and avoiding adverse effects of moisture on the cooling effect and system stability.

[0090] In a specific implementation, the inner tank structure 2 is provided with a first liquid level gauge 218, and the return liquid tank 201 is provided with a second liquid level gauge 219. The operator can directly observe the liquid level of the coolant in the inner tank structure 2 and the liquid level in the return liquid tank 201 through the observation window 502 to determine whether coolant needs to be added.

[0091] In a specific implementation, the inner tank structure 2 is also equipped with a liquid level sensor 220. The liquid level sensor 220 is connected to the liquid cooling distribution unit 6 or the host computer. The control system can accurately adjust the height of the coolant in the inner tank structure 2 according to the liquid level data of the liquid level sensor 220.

[0092] In one embodiment, the top cover assembly 5 further includes a reflux groove 503, which is disposed on the cover plate 501, located on the side where the cover plate 501 is hinged to the inner liner structure 2, and the distance between the reflux groove 503 and the cover plate 501 on the side opposite to the cover plate 501 gradually decreases as it approaches the side where the cover plate 501 is hinged to the inner liner structure 2.

[0093] Since the return channel 503 is located on the side where the cover plate 501 is hinged to the inner liner structure 2, when the cover plate 501 is opened, the condensed liquid on it can naturally flow back into the return channel 503. As the distance between the side wall of the return channel 503 and the cover plate 501 gradually decreases towards the side where the cover plate 501 is hinged to the inner liner structure 2, it ensures that when the cover plate 501 is closed again, the coolant accumulated in the return channel 503 can smoothly flow back into the inner liner structure 2. This effectively avoids the outflow of coolant, thereby reducing coolant waste and preventing potential pollution of the surrounding environment by coolant. It improves resource utilization efficiency and protects the cleanliness and safety of the environment.

[0094] According to an embodiment of the present invention, another aspect provides a data center, including a liquid cooling distribution unit 6 and the above-mentioned immersion liquid cooling unit, wherein the two sides of the immersion liquid cooling unit are respectively connected to two sets of liquid cooling distribution units 6.

[0095] By connecting two independent liquid cooling distribution units 6 to both sides of the immersion liquid cooling unit, redundant configuration of the liquid cooling distribution units 6 is achieved. When one set of liquid cooling distribution units 6 needs to be inspected or maintained, it can be switched to the other set of liquid cooling distribution units 6 to continue to provide cooling services to the immersion liquid cooling unit, thereby ensuring that the continuous operation of the server body 4 is not affected. This not only improves the reliability and stability of the system, but also provides greater operational flexibility and convenience for inspection and maintenance.

[0096] In one embodiment, the liquid cooling distribution unit 6 includes a housing assembly, a liquid storage box 602, a heat exchanger 604, and at least two sets of submersible pumps 607. The liquid storage box 602 is disposed within the housing assembly, and the bottom of the liquid storage box 602 is connected to the liquid outlet pipe 302 of the immersion liquid cooling unit via an inlet pipe 603. The heat exchanger 604 is disposed within the housing assembly, located below the liquid storage box 602, and is used to connect to an external cold source. The heat exchanger 604 is connected to the liquid storage box 602 via a secondary side water inlet pipe 605, and is connected to the liquid inlet pipe 301 of the immersion liquid cooling unit via a secondary side water outlet pipe 606. At least two sets of submersible pumps 607 are disposed within the liquid storage box 602.

[0097] Since the heat exchanger 604 is installed below the liquid storage box 602, the design volume of the liquid cooling distribution unit 6 is mainly limited by the size of the heat exchanger 604, effectively reducing the overall volume of the liquid cooling distribution unit 6 and making it more compact. The setting of at least two sets of submersible pumps 607 ensures that even if one set of submersible pumps 607 fails, the other set of submersible pumps 607 can immediately take over and continue to provide stable liquid circulation to the system, thereby greatly improving the reliability and stability of the entire liquid cooling system and enhancing the system's fault tolerance and continuous operation capability.

[0098] In one embodiment, a set of liquid-cooled distribution units 6 is connected to two sets of immersion liquid-cooled units, which are respectively arranged on both sides of the liquid-cooled distribution unit 6; the inlet pipe 603 includes an inlet main pipe 6031, a first inlet branch pipe 6032, and a second inlet branch pipe 6033; the inlet main pipe 6031 is connected to the liquid storage box 602; the first inlet branch pipe 6032 and the second inlet branch pipe 6033 are respectively arranged on both sides of the inlet main pipe 6031 and are respectively connected to the liquid outlet pipes 302 of the two adjacent sets of immersion liquid-cooled units; the secondary side water outlet pipe 606 includes a water outlet main pipe 6061, a first water outlet branch pipe 6062, and a second water outlet branch pipe 6063; the water outlet main pipe 6061 is connected to the heat exchanger 604; the first water outlet branch pipe 6062 and the second water outlet branch pipe 6063 are respectively arranged on both sides of the water outlet main pipe 6061 and are respectively connected to the liquid inlet pipes 301 of the two adjacent sets of immersion liquid-cooled units.

[0099] By configuring the first inlet branch pipe 6032, the second inlet branch pipe 6033, the first outlet branch pipe 6062, and the second outlet branch pipe 6063, a set of liquid cooling distribution units 6 can be connected to two sets of immersion liquid cooling units simultaneously. This not only improves the flexibility of the liquid cooling system but also ensures that the coolant can flow efficiently and orderly between the liquid cooling distribution unit 6 and the immersion liquid cooling units, thereby meeting the cooling requirements in complex application scenarios.

[0100] Preferably, a temperature sensor is provided on the outlet pipe 302, and the temperature sensor is communicatively connected to the liquid cooling distribution unit 6 corresponding to the inlet and outlet pipes 3. When the temperature sensor detects that the temperature of the coolant in the corresponding outlet pipe 302 is lower than a preset value, the power of the liquid cooling distribution unit 6 connected to the outlet pipe 302 can be reduced; when the temperature sensor detects that the temperature of the coolant in the corresponding outlet pipe 302 is higher than the preset value, the power of the liquid cooling distribution unit 6 connected to the outlet pipe 302 can be increased. This realizes automatic and flexible adjustment of the power of the liquid cooling distribution unit 6, which not only ensures the efficient operation of the liquid cooling system, but also optimizes the use of energy, avoids unnecessary energy consumption, accurately responds to the actual cooling needs of the server motherboard, and effectively ensures the stable operation of the immersion liquid cooling unit.

[0101] In one embodiment of this example, such as Figure 1 As shown, the data center is equipped with one set of immersion liquid cooling units and two sets of liquid cooling distribution units 6. The two sides of the immersion liquid cooling unit are connected to the two sets of liquid cooling distribution units 6 respectively, forming a 1+1 redundancy of the liquid cooling distribution units 6.

[0102] In another embodiment of this example, such as Figure 2As shown, the data center is equipped with multiple sets of immersion liquid cooling units and multiple sets of liquid cooling distribution units 6. An immersion liquid cooling unit is provided between two adjacent sets of liquid cooling distribution units 6. The liquid cooling distribution unit 6 located between two sets of immersion liquid cooling units is connected to both adjacent sets of immersion liquid cooling units. The liquid cooling distribution unit 6 located at the end is connected to a set of adjacent immersion liquid cooling units, forming N+1 redundancy of the liquid cooling distribution unit 6. The inlet pipe 603 of the liquid cooling distribution unit 6 between two adjacent groups of immersion liquid cooling units includes an inlet main pipe 6031, a first inlet branch pipe 6032, and a second inlet branch pipe 6033; the first inlet branch pipe 6032 and the second inlet branch pipe 6033 are respectively connected to the liquid outlet pipes 302 of the two adjacent groups of immersion liquid cooling units; the secondary side water outlet pipe 606 includes a water outlet main pipe 6061, a first water outlet branch pipe 6062, and a second water outlet branch pipe 6063; the first water outlet branch pipe 6062 and the second water outlet branch pipe 6063 are respectively connected to the liquid inlet pipes 301 of the two adjacent groups of immersion liquid cooling units; the inlet pipe 603 of the liquid cooling distribution unit 6 located at the end is connected to the liquid outlet pipe 302 of the adjacent immersion liquid cooling unit, and the secondary side water outlet pipe 606 is connected to the liquid inlet pipe 301 of the adjacent immersion liquid cooling unit.

[0103] In another embodiment of this example, such as Figure 3 As shown, the data center is equipped with multiple sets of immersion liquid cooling units and multiple sets of liquid cooling distribution units 6. Each side of an immersion liquid cooling unit is connected to two sets of liquid cooling distribution units 6 respectively; and each set of liquid cooling distribution units 6 is connected to a set of immersion liquid cooling units. The inlet pipe 603 of the liquid cooling distribution unit 6 is connected to the outlet pipe 302 of the adjacent immersion liquid cooling unit, and the secondary side outlet pipe 606 is connected to the inlet pipe 301 of the adjacent immersion liquid cooling unit, forming N+N redundancy of the liquid cooling distribution unit 6.

[0104] In another embodiment of this example, such as Figure 4 As shown, the data center is equipped with an underground pipe network, and there are multiple sets of immersion liquid cooling units. All sets of immersion liquid cooling units are connected to the underground cold source pipes through the first through-hole; the multiple sets of immersion liquid cooling units form a cluster arrangement.

[0105] In a specific embodiment, the liquid cooling distribution unit 6 is disposed on the side of the immersion liquid cooling unit along a first direction; the housing assembly includes a housing frame 6011, a second mounting plate 6013 of two first mounting plates 6012; the heat exchanger 604 is connected to an external cold source through a primary side circulation pipe 608, and the second mounting plate 6013 is installed on one side of the housing frame 6011 along a second direction; the primary side circulation pipe 608 extends along the second direction to the side away from the second mounting plate 6013; the two first mounting plates 6012 are detachably connected to both sides of the housing frame 6011 along the first direction, respectively. When the liquid cooling distribution unit 6 is connected to the pipes of the immersion liquid cooling unit, it is only necessary to remove the first mounting plate 6012 adjacent to the immersion liquid cooling unit, so as to realize the parallel cabinet with the immersion liquid cooling unit. When the immersion liquid cooling unit is connected to the liquid cooling distribution unit 6, the pipes will not leak during use.

[0106] In a specific embodiment, the housing frame 6011 is provided with a fixing box 6014, a first mounting bracket 6015, a second mounting bracket 6016, and a third mounting bracket 6017; the fixing box 6014 is located on the top of the housing frame 6011 and is used to fix the display screen 6018; the first mounting bracket 6015 is used to fix the heat exchanger 604; the second mounting bracket 6016 is used to fix the liquid storage box 602; and the third mounting bracket 6017 is used to fix the electrical control box 6019.

[0107] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. An immersion liquid-cooled unit, characterized by, The application relates to an outdoor server cabinet. The outdoor server cabinet comprises an outer frame structure (1) and an inner container structure (2). The outer frame structure (1) comprises an outer frame (101) and a side plate (102). The bottom of the outer frame (101) is provided with a first through hole, and the side wall of the outer frame (101) is provided with a second through hole. The side plate (102) is arranged correspondingly to the second through hole and is detachably connected to the side wall of the outer frame (101). The inner container structure (2) is arranged in the outer frame (101). The gap is formed between the inner container structure (2) and the outer frame structure (1). The inlet and outlet liquid pipeline (3) is arranged in the gap between the outer frame structure (1) and the inner container structure (2) and communicates with the inner container structure (2). The inlet and outlet liquid pipeline (3) is used for connecting with an underground cold source pipeline through the first through hole or connecting with an aboveground cold source pipeline through the second through hole.

2. The immersion liquid-cooled unit of claim 1, wherein, The server main body (4) is arranged in the inner container structure (2). The inlet and outlet liquid pipeline (3) is provided with two groups of inlet and outlet liquid pipelines (3) which are arranged at intervals. The inlet and outlet liquid pipeline (3) is provided with a switch valve. The inner container structure (2) further comprises a liquid return bin (201) which is arranged on one side of the inner container structure (2). The two groups of inlet and outlet liquid pipelines (3) are arranged on the same side of the liquid return bin (201) and below the liquid return bin (201). The bottom of the liquid return bin (201) is provided with a liquid outlet. The inner container structure (2) further comprises a filter box (202) which is arranged at the bottom of the liquid return bin (201). The liquid outlet is arranged at the position of the filter box (202) and communicates with the filter box (202). The inner container structure (2) further comprises a filter screen frame (203) which is arranged at the top of the liquid return bin (201). The inner container structure (2) further comprises a support assembly (204) which is arranged in the inner container structure (2) and comprises a first support (2041) and a second support (2042). The two ends of the server main body (4) are connected with the first support (2041) and the second support (2042) respectively. The inner container structure (2) further comprises a first filling plate (205) which is arranged in the inner container structure (2) and adjacent to the server main body (4) and detachably connected with the inner side wall of the inner container structure (2). The inner container structure (2) further comprises a second filling plate (206) which is arranged in the inner container structure (2) and adjacent to the server main body (4) and detachably connected with the bottom wall of the inner container structure (2).

3. The immersion liquid-cooled unit of claim 1, wherein, The inner container structure (2) further comprises a sealing strip (207), a connection state indicator lamp (208) and a limit switch (209); the sealing strip (207) is located at the top opening of the inner container structure (2) and is fixed on the inner container structure (2); the limit switch (209) is located below the sealing strip (207) and is fixed on the inner side wall of the inner container structure (2); the connection state indicator lamp (208) is arranged below the sealing strip (207), is arranged adjacent to the limit switch (209), is electrically connected with the limit switch (209), and is fixed on the inner side wall of the inner container structure (2); The immersion liquid cooling unit further comprises an upper cover assembly (5), and the upper cover assembly (5) comprises: A cover plate (501) is hingedly connected to one side of the inner container structure (2), has a connection position connected with the inner container structure (2) and a separation position separated from the inner container structure (2) on the other side, and a protrusion is arranged on the side of the cover plate (501) facing the inner container structure (2); When the other side of the cover plate (501) is in the connection position, the protrusion abuts against the limit switch (209), and the limit switch (209) controls the connection state indicator lamp (208) to be in a first indication state; when the other side of the cover plate (501) is in the separation position, the protrusion is separated from the limit switch (209), and the limit switch (209) controls the connection state indicator lamp (208) to be in a second indication state; An observation window (502) is arranged on the cover plate (501).

4. The immersion liquid-cooled unit of claim 3, wherein, The upper cover assembly (5) further comprises a backflow groove (503) arranged on the cover plate (501) and located on the side of the cover plate (501) hingedly connected to the inner container structure (2), and gradually decreasing in distance between the groove wall on the side of the cover plate (501) opposite to the hingedly connected side and the cover plate (501) towards the side of the cover plate (501) hingedly connected to the inner container structure (2).

5. A data center, characterized by, The immersion liquid cooling unit of any one of claims 1 to 4 is connected with two groups of liquid cooling distribution units (6) on two sides respectively.

6. The data center of claim 5, wherein, The liquid cooling distribution unit (6) comprises: A housing assembly; A liquid storage box (602) arranged in the housing assembly; and a bottom of the liquid storage box (602) is connected with a liquid outlet pipeline (302) of the immersion liquid cooling unit through an inflow pipe (603); A heat exchanger (604) arranged in the housing assembly and located below the liquid storage box (602) and used for being connected with an external cold source; the heat exchanger (604) is connected with the liquid storage box (602) through a secondary side water inlet pipeline (605) and connected with an liquid inlet pipeline (301) of the immersion liquid cooling unit through a secondary side water outlet pipeline (606); At least two groups of submersible pumps (607) arranged in the liquid storage box (602).

7. The data center of claim 6, wherein, A group of the liquid cooling distribution units (6) are connected with two groups of the immersed liquid cooling units, and the two groups of the immersed liquid cooling units are respectively arranged on two sides of the liquid cooling distribution unit (6); The inflow pipe (603) comprises an inflow main pipe (6031), a first inflow branch pipe (6032) and a second inflow branch pipe (6033); the inflow main pipe (6031) is connected with the liquid storage box (602); the first inflow branch pipe (6032) and the second inflow branch pipe (6033) are respectively arranged on two sides of the inflow main pipe (6031) and are respectively connected with the liquid outlet pipelines (302) of the two adjacent groups of the immersed liquid cooling units; The secondary side water outlet pipeline (606) comprises a water outlet main pipe (6061), a first water outlet branch pipe (6062) and a second water outlet branch pipe (6063); the water outlet main pipe (6061) is connected with the heat exchanger (604); the first water outlet branch pipe (6062) and the second water outlet branch pipe (6063) are respectively arranged on two sides of the water outlet main pipe (6061) and are respectively connected with the liquid inlet pipelines (301) of the two adjacent groups of the immersed liquid cooling units.

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