Multi-layer immersion liquid cooling cabinet

Abstract

The utility model relates to a multi-layer immersion liquid cooling cabinet, and relates to the technical field of liquid cooling equipment, the multi-layer immersion liquid cooling cabinet comprises a cabinet body and a liquid cooling system, the cabinet body is internally provided with a plurality of drawer type equipment storage drawers, immersion cavities capable of placing electronic devices are formed in the equipment storage drawers, the liquid cooling system is provided with a main liquid inlet pipe and a main return pipe, and the main liquid inlet pipe and the main return pipe are communicated with each other. Each equipment storage drawer is connected with the main liquid inlet pipe through a branch liquid inlet pipe, and each equipment storage drawer is connected with the main return pipe through a branch return pipe, so that a cooling medium can flow into the immersion cavity through the branch liquid inlet pipe and flow out of the immersion cavity through the branch return pipe; each branch liquid inlet pipe is connected with a flow adjusting assembly capable of adjusting the flow of a cooling medium in series. The heat exchange effect in each equipment storage drawer can be adjusted according to needs, and the situation that the use effect of electronic devices is affected due to the fact that the heat exchange temperature is too low or too high is effectively avoided.

Description

Technical Field

[0001] This application relates to the field of liquid cooling equipment technology, and in particular to a multi-layer immersion liquid cooling cabinet. Background Technology

[0002] Liquid-cooled cabinets are a highly efficient heat dissipation solution widely used in data centers and other applications requiring efficient heat dissipation, especially in outdoor liquid-cooled cabinets, where they can achieve long-term high reliability and stability.

[0003] Chinese Patent CN118647175A discloses a multi-layer immersion liquid cooling system, including a cabinet with longitudinally arranged partitions. The liquid cooling zone employs at least two drawer-type liquid cooling chambers, each containing at least one motherboard slot, a low-voltage cable tray, a high-voltage cable tray, a network cable tray, a temperature sensor, and a flow pump. Each liquid cooling chamber has a return pipe and an inlet pipe at its upper and lower parts, respectively. The distribution chamber contains a filter, a booster pump, a liquid heat exchanger, and a flow valve connected in sequence. An industrial controller, a display screen, and a PDU power supply are located on the side walls of the liquid cooling chambers, while a power interface and an aviation connector are also located on the side walls of the distribution chambers. The flow rate of the cooling medium into each liquid cooling chamber is the same, resulting in uniform cooling effect in each chamber. However, when the number of electronic components in each chamber varies, the temperature in the chamber with fewer electronic components may be too low, while the temperature in the chamber with more electronic components may be too high, thus affecting the functionality of the electronic components. Utility Model Content

[0004] To address the issue of excessively low or high temperatures within the liquid cooling chambers of electronic devices when the number of devices in each chamber varies, thus affecting the functionality of the electronic devices, this application provides a multi-layer immersion liquid cooling cabinet.

[0005] The multi-layer immersion liquid-cooled cabinet provided in this application adopts the following technical solution:

[0006] A multi-layer immersion liquid-cooled cabinet includes a cabinet body and a liquid cooling system. The cabinet body has multiple drawer-type equipment storage drawers, each forming an immersion cavity capable of holding electronic devices. The liquid cooling system has a main inlet pipe and a main return pipe. Each equipment storage drawer is connected to the main inlet pipe via a branch inlet pipe, and each equipment storage drawer is connected to the main return pipe via a branch return pipe, so that the cooling medium can flow into the immersion cavity from the branch inlet pipe and flow out from the branch return pipe. Each branch inlet pipe is connected in series with a flow regulating component capable of adjusting the flow rate of the cooling medium.

[0007] By adopting the above technical solution, when the cooling medium enters the immersion chamber to exchange heat with the electronic device, the flow rate of the cooling medium in each immersion chamber is individually controlled by the flow regulation component, so that the heat exchange effect in each device storage drawer can be adjusted as needed, effectively avoiding the impact of excessively low or high heat exchange temperature on the use of electronic devices.

[0008] Preferably, the flow regulating assembly includes an electric flow regulating valve connected in series on the inlet pipe;

[0009] Each of the aforementioned branch return pipes is connected in series with a control valve.

[0010] By adopting the above technical solution, the electric flow regulating valve can dynamically adjust the flow rate of the cooling medium in the inlet pipe according to actual needs, ensuring that the heat exchange effect in each equipment storage drawer can be adjusted as needed, avoiding problems such as excessively high or low temperatures in some equipment storage drawers due to uneven cooling medium flow. This not only improves the overall heat dissipation efficiency of the system but also extends the service life of server electronic components; a control valve is installed on the return pipe, which closes when power is off to prevent cooling medium in the upper cavity from flowing into the lower cavity and causing leakage.

[0011] Preferably, each of the branch inlet pipes is connected to the main inlet pipe via a first elastic telescopic tube, and each of the branch return pipes is connected to the main return pipe via a second elastic telescopic tube.

[0012] By adopting the above technical solution, the connection method of the first elastic telescopic tube and the second elastic telescopic tube allows the inlet pipe and the return pipe to move flexibly in different positions, adapting to the pull-out action of the equipment storage drawer, ensuring smooth flow of cooling medium, reducing the risk of pipe deformation under stress, and improving the stability and reliability of the system.

[0013] Preferably, the inlet of the liquid inlet pipe is lower than the return outlet of the liquid return pipe.

[0014] By adopting the above technical solution, the flow channel of the cooling medium through the immersion chamber is optimized under the action of natural gravity, which improves heat exchange efficiency and reduces pump energy consumption. The design of the inlet being lower than the return outlet ensures that the cooling medium can fully cover the surface of electronic components under the action of gravity, further improving the heat dissipation effect and avoiding local overheating problems caused by uneven distribution of the cooling medium.

[0015] Preferably, each of the device storage drawers is provided with roller sets on both sides, and the cabinet is provided with guide rails that correspond one-to-one with the roller sets. The roller sets are inserted into the guide rails and can roll along the guide rails.

[0016] By adopting the above technical solution, each equipment storage drawer is equipped with rotatable roller sets on both sides, and the cabinet has guide rails that correspond one-to-one with the roller sets. The roller sets insert into the guide rails and can roll along the guide rails. This design makes the equipment storage drawers easier to pull out and push in, reduces friction, and improves operational convenience.

[0017] Preferably, the rear of the device storage drawer is provided with a blocking part, and the cabinet body can prevent the blocking part from sliding, so as to limit the device storage drawer from being completely pulled out of the cabinet body.

[0018] By adopting the above technical solution, a blocking part is provided at the rear of the device storage drawer, and the cabinet can prevent this blocking part from sliding, thereby effectively preventing the device storage drawer from completely detaching from the cabinet during the pulling process. This design not only improves the system's security but also ensures that the device storage drawer is more stable and reliable when maintaining and replacing servers.

[0019] Preferably, each of the device storage drawers is equipped with a display that can show the temperature and liquid level inside the immersion chamber.

[0020] By adopting the above technical solution, displays can be installed on the equipment storage drawers of each immersion chamber to show the temperature and liquid level inside the immersion chamber in real time. This not only helps to understand the working status and heat exchange effect of the servers in each immersion chamber in a timely manner.

[0021] Preferably, the cabinet is provided with a linear drive mechanism that corresponds one-to-one with each of the device storage drawers. The linear drive mechanism is connected to the device storage drawer so as to drive the device storage drawer to be pulled out or inserted into the cabinet.

[0022] By adopting the above technical solution, the automatic extraction and insertion of equipment storage drawers can be realized in multi-layer immersion liquid-cooled cabinets, improving the convenience of server maintenance and replacement.

[0023] Preferably, the linear drive mechanism includes a drive motor, a drive sleeve, and a drive screw. The drive motor is fixedly mounted on the cabinet, the drive sleeve is coaxially fixedly mounted on the output shaft of the drive motor, and the drive screw is fixedly mounted on the equipment storage drawer, inserted into the drive sleeve, and threadedly connected to the drive sleeve.

[0024] Preferably, the cabinet is equipped with a main drain pipe for an external drainage system, each of the equipment storage drawers is connected to a branch drain pipe, each branch drain pipe is connected to the main drain pipe through a third elastic telescopic pipe, and each branch drain pipe is equipped with a valve to control the opening and closing of the branch drain pipe.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. Each device storage drawer is connected to the main inlet pipe and the main return pipe through branch inlet pipes and branch return pipes. Each branch inlet pipe is equipped with a flow regulating component, which can individually control the heat exchange temperature in each immersion chamber, effectively avoiding the impact on the use of electronic devices due to excessively low or high heat exchange temperature.

[0027] 2. By using multi-layered equipment storage drawers to house electronic components, multiple servers can operate simultaneously, significantly improving the space utilization of the data center;

[0028] 3. The equipment storage drawers are equipped with roller sets on both sides, and the cabinet is equipped with corresponding guide rails, which makes it easy to pull out each immersion chamber, greatly improving the convenience of operation and maintenance. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of a multi-layer immersion liquid cooling cabinet according to an embodiment of this application.

[0030] Figure 2 This is a schematic diagram used to illustrate the structure of the immersion chamber.

[0031] Figure 3 It is an exploded view used to show the interaction between the roller assembly and the guide rail.

[0032] Explanation of reference numerals in the attached drawings: 1. Cabinet; 11. Equipment storage drawer; 111. Immersion chamber; 112. Slot; 113. Blocking part; 12. Rear chamber; 2. Liquid cooling system; 21. Booster pump; 22. Heat exchanger; 23. Liquid storage tank; 3. Electronic components; 41. Main inlet pipe; 42. Branch inlet pipe; 43. Main return pipe; 44. Branch return pipe; 45. First elastic telescopic pipe; 46. Second elastic telescopic pipe; 47. Main drain pipe; 48. Branch drain pipe; 49. Third elastic telescopic pipe; 5. Flow regulation assembly; 6. Display; 71. Roller assembly; 72. Guide rail; 73. Displacement laser sensor; 8. Linear drive mechanism; 81. Drive motor; 82. Drive sleeve; 83. Drive screw; 9. Control valve. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0034] This application discloses a multi-layer immersion liquid cooling cabinet.

[0035] Reference Figure 1 , Figure 2A multi-layer immersion liquid-cooled cabinet includes a cabinet body 1 and a liquid cooling system 2. The cabinet body 1 is made of sheet metal stamping. Multiple drawer-type device storage drawers 11 for placing electronic devices 3 are inserted into the cabinet body 1. The electronic devices include motherboards, servers and BBUs and other communication devices. A rear cavity 12 is formed at the rear of the cabinet body 1. In this embodiment, three device storage drawers 11 are arranged layer by layer. Each device storage drawer 11 has an immersion cavity 111 inside. The electronic devices 3 are arranged in the immersion cavity 111 through slots 112 fixedly set in the immersion cavity 111.

[0036] The liquid cooling system 2 in this embodiment includes a booster pump 21, a heat exchanger 22, and a liquid storage tank 23. The outlet end of the booster pump 21 is provided with a main inlet pipe 41, and the inlet end of the liquid storage tank 23 is fixedly connected with a main return pipe 43. Both the main inlet pipe 41 and the main return pipe 43 pass through the back of the cabinet 1 into the rear cavity 12. The booster pump 21, the heat exchanger 22, and the liquid storage tank 23 are connected by pipes. Each equipment storage drawer 11 is connected to the main inlet pipe 41 through a branch inlet pipe 42. The branch inlet pipe 42 is inserted into the equipment storage drawer 11 from the side, and the inlet of the branch inlet pipe 42 is located at the bottom of the immersion cavity 111. Each equipment storage drawer 11 is connected to the main return pipe 43 through a branch return pipe 44, so that the cooling medium can flow into the immersion cavity 111 through the branch inlet pipe 42 and flow out through the branch return pipe 44. The cooling medium in this embodiment is cooling water. The return pipe 44 is inserted into the device storage drawer 11 from the back, with its return port located in the middle of the immersion chamber 111. The design of the inlet of the inlet pipe 42 being lower than the return port of the return pipe 44 optimizes the flow path of the cooling medium through the immersion chamber 111 under natural gravity, improving heat exchange efficiency while reducing pump energy consumption. This design ensures that the cooling medium can fully cover the surface of the electronic device 3 under gravity, further enhancing heat dissipation and avoiding localized overheating caused by uneven distribution of the cooling medium.

[0037] Each branch inlet pipe 42 is connected in series with a flow regulating component 5 capable of adjusting the flow rate of the cooling medium. In this embodiment, the flow regulating component 5 is an electric flow regulating valve. The circulation path of the cooling medium is as follows: the cooling medium enters each immersion chamber 111 through the main inlet pipe 41 and the branch inlet pipes 42 from the booster pump 21, where it contacts and exchanges heat with the electronic devices 3 inside the immersion chamber 111. After heat exchange, the cooling medium flows into the main return pipe 43 through the branch return pipes 44. Each branch return pipe 44 is connected in series with a control valve 9, which includes, but is not limited to, a normally closed solenoid valve or a normally closed electric valve. When the power is off, the valve closes to prevent the cooling medium in the upper chamber from flowing into the lower chamber and causing leakage. The cooling medium in the main return pipe 43 flows back to the storage tank 23, then enters the heat exchanger 22 through a pipeline for heat exchange, and then flows back to the cabinet 1 again through the booster pump 21, thus realizing the circulation of the cooling medium.

[0038] When dealing with different numbers of electronic devices 3 in each device storage drawer 11, the flow rate of the cooling medium entering the immersion chamber 111 through the electric flow regulating valve is adjusted so that the heat exchange effect of the cooling medium on the electronic devices 3 meets the set temperature of the electronic devices 3. This allows the heat exchange effect in the device storage drawer 11 to be adjusted as needed, effectively avoiding the impact of excessively low or high heat exchange temperature on the use of the electronic devices 3.

[0039] Reference Figure 1 The equipment storage drawer 11 is fixedly equipped with a display 6 on the end wall outside the cabinet 1. The display 6 can be connected to the temperature sensor and liquid level sensor inside the equipment storage drawer 11 to intuitively display the cooling temperature and liquid level information of the cooling medium in the immersion chamber 111.

[0040] Reference Figure 3 Each equipment storage drawer 11 is rotatably connected to both sides by roller sets 71, each roller set 71 containing two rollers. The cabinet 1 is equipped with guide rails 72 corresponding to each roller set 71. Each guide rail 72 is set along the sliding direction of the equipment storage drawer 11. The roller sets 71 insert into the guide rails 72 and roll along them. This roller and guide rail design makes the equipment storage drawer 11 easier to pull out and push in, reducing friction and improving operational convenience. A displacement laser sensor 73 is installed at the bottom of the equipment storage drawer 11 to measure the sliding distance of the drawer, providing precise limits for pulling out and inserting the drawer.

[0041] Reference Figure 2Each device storage drawer 11 is fixedly provided with a blocking part 113 at the rear. The blocking part 113 extends downward toward the device storage drawer 11 and can interfere with the part below the exit of the cabinet 1. This can prevent the blocking part 113 from sliding, thereby limiting the complete removal of the device storage drawer 11 from the cabinet 1, improving the safety of the system, and ensuring that the device storage drawer 11 is more stable and reliable when maintaining and replacing servers.

[0042] Reference Figure 2 Each branch inlet pipe 42 is connected to the main inlet pipe 41 via a first elastic telescopic tube 45, and each branch return pipe 44 is connected to the main return pipe 43 via a second elastic telescopic tube 46. In this embodiment, the first elastic telescopic tube 45 and the second elastic telescopic tube 46 are spring tubes; in other embodiments, they can also be stainless steel tubes. When stainless steel tubes are used, a certain length of stainless steel tube is bent within the rear cavity 12. When the equipment storage drawer 11 is pulled out, the stainless steel tube straightens to accommodate the displacement of the equipment storage drawer 11. Through the telescopic action of the first elastic telescopic tube 45 and the second elastic telescopic tube 46, the branch inlet pipes 42 and the branch return pipes 44 can move flexibly in different positions to adapt to the pulling action of the equipment storage drawer 11, ensuring smooth flow of the cooling medium, reducing the risk of pipe deformation under stress, and improving the stability and reliability of the system.

[0043] Reference Figure 3 The cabinet 1 is equipped with a vertically arranged main drain pipe 47, which extends outside the cabinet 1 and connects to the external drainage system. Each equipment storage drawer 11 has a side-bottom connection to a branch drain pipe 48. Each branch drain pipe 48 is connected to the main drain pipe 47 via a third elastic telescopic tube 49. The third elastic telescopic tube 49 has the same structure as the first elastic telescopic tube 45. Each branch drain pipe 48 is equipped with a valve to control its opening and closing. The cooling medium within the immersion chamber 111 can be completely drained through the branch drain pipes 48.

[0044] Reference Figure 2The cabinet 1 is equipped with linear drive mechanisms 8 corresponding to the device storage drawers 11 one-to-one. In this embodiment, the linear drive mechanism 8 includes a drive motor 81, a drive sleeve 82, and a drive screw 83. In other embodiments, the linear drive mechanism 8 can also be an electric push rod. The drive motor 81 is fixedly installed on the outer wall of the cabinet 1, with its output shaft facing the device storage drawer 11 and inserted into the cabinet 1. The drive sleeve 82 is coaxially fixedly installed on one end of the drive motor 81 that is inserted into the cabinet 1. The drive screw 83 is fixedly installed on the device storage drawer 11 and inserted into the drive sleeve 82, and is threadedly connected to the drive sleeve 82. Through the bidirectional rotation of the drive motor 81, the device storage drawer 11 can be automatically pulled out and inserted in the multi-layer immersion liquid-cooled cabinet, improving the convenience of server maintenance and replacement.

[0045] The implementation principle of a multi-layer immersion liquid-cooled cabinet in this application embodiment is as follows: When the number of electronic devices 3 in each equipment storage drawer 11 is different, the flow rate of the cooling medium entering the immersion chamber 111 through the liquid inlet pipe 42 is adjusted by the electric flow regulating valve, so that the heat exchange effect of the cooling medium on the electronic devices 3 meets the set temperature of the electronic devices 3, and the heat exchange effect in the equipment storage drawer 11 can be adjusted as needed, effectively avoiding the use of electronic devices 3 due to excessively low or high heat exchange temperature.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A multi-layered submersion liquid-cooled cabinet, characterized by: The utility model relates to a liquid cooling system and equipment storage drawer, and belongs to the field of electronic equipment cooling.

2. The multi-layer immersion liquid cooling cabinet according to claim 1, characterized in that: The utility model discloses a liquid cooling system and equipment storage drawer, which comprises a cabinet (1) and a liquid cooling system (2), a plurality of drawer type equipment storage drawers (11) are arranged in the cabinet (1), an immersion cavity (111) capable of placing electronic devices (3) is formed in the equipment storage drawer (11), a main liquid inlet pipe (41) and a main return pipe (43) are arranged on the liquid cooling system (2), each equipment storage drawer (11) is connected with the main liquid inlet pipe (41) through a branch liquid inlet pipe (42), each equipment storage drawer (11) is connected with the main return pipe (43) through a branch return pipe (44), so that the cooling medium can flow into the immersion cavity (111) from the branch liquid inlet pipe (42) and flow out from the branch return pipe (44), and a flow regulating assembly (5) capable of regulating the flow of the cooling medium is connected in series on each branch liquid inlet pipe (42). The flow regulating assembly (5) comprises an electric flow regulating valve connected in series on the branch liquid inlet pipe (42).

3. The multi-layer immersion liquid cooling cabinet according to claim 1, characterized in that: A control valve (9) is connected in series on each branch return pipe (44).

4. The multi-layer immersion liquid cooling cabinet according to claim 1, characterized in that: Each branch liquid inlet pipe (42) and the main liquid inlet pipe (41) are connected through a first elastic expansion pipe (45), and each branch return pipe (44) and the main return pipe (43) are connected through a second elastic expansion pipe (46).

5. The multi-layered immersion liquid cooling cabinet of claim 1, wherein: The liquid inlet of the branch liquid inlet pipe (42) is lower than the return port of the branch return pipe (44).

6. The multi-layered immersion liquid cooling cabinet of claim 1, wherein: Roller sets (71) are rotatably arranged on both sides of each equipment storage drawer (11), guide rails (72) corresponding to the roller sets (71) are arranged on the cabinet (1), the roller sets (71) are inserted into the guide rails (72) and can roll along the guide rails (72).

7. The multi-layered immersion liquid cooling cabinet of claim 1, wherein: A blocking part (113) is arranged at the tail of the equipment storage drawer (11), the cabinet (1) can block the sliding of the blocking part (113), so that the equipment storage drawer (11) can be completely pulled out of the cabinet (1).

8. The multi-layered immersion liquid cooling cabinet of claim 1, wherein: A display (6) is arranged on each equipment storage drawer (11), and the display (6) can display the temperature and liquid level in the immersion cavity (111).

9. The multi-layer immersion liquid cooling cabinet according to claim 8, characterized in that: Linear drive mechanisms (8) corresponding to the equipment storage drawers (11) are arranged on the cabinet (1), the linear drive mechanisms (8) are connected with the equipment storage drawers (11) to drive the equipment storage drawers (11) to be pulled out of or inserted into the cabinet (1). The linear drive mechanism (8) comprises a drive motor (81), a drive sleeve (82) and a drive screw (83), the drive motor (81) is fixedly arranged on the cabinet (1), the drive sleeve (82) is coaxially fixedly arranged on the output shaft of the drive motor (81), the drive screw (83) is fixedly arranged on the equipment storage drawer (11) and is inserted into the drive sleeve (82) and is in threaded connection with the drive sleeve (82).

10. The multi-layer immersion liquid cooling cabinet of claim 8, wherein: The cabinet body (1) is provided with a main liquid discharge pipe (47) connected with an external drainage system, each equipment storage drawer (11) is connected with a branch liquid discharge pipe (48), each branch liquid discharge pipe (48) is connected with the main liquid discharge pipe (47) through a third elastic telescopic pipe (49), and each branch liquid discharge pipe (48) is provided with a valve to control the on-off of the branch liquid discharge pipe (48).

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