Submerged liquid cooling system

Abstract

The application provides an immersion liquid cooling system, which comprises a liquid tank cabinet, an immersion structure, a heat dissipation cabinet, at least two liquid discharge branches, at least two electromagnetic valves and a liquid supplement pipeline. The immersion structure is arranged in a containing cavity of the liquid tank cabinet. The immersion structure has a liquid cooling tank and a plurality of liquid supplement tanks. At least two of the plurality of liquid supplement tanks are communicated with the liquid cooling tank. The heat dissipation cabinet has a heat exchange part and a heat exchange flow channel which exchanges heat with the heat exchange part. The liquid discharge ports of the liquid supplement tanks which are communicated with the liquid cooling tank are communicated with the liquid inlet ports of the heat exchange flow channel through the corresponding liquid discharge branches. The electromagnetic valves are arranged on the liquid discharge branches which are used for communicating the liquid supplement tanks and the heat exchange flow channel. The first end of the liquid supplement pipeline is communicated with the liquid outlet port of the heat exchange flow channel, and the second end of the liquid supplement pipeline is communicated with the liquid supplement port of the liquid cooling tank. The application solves the problem that the liquid cooling tank cannot effectively dissipate heat for a plurality of node cabinets in the liquid cooling tank due to the shutdown of the liquid cooling cabinet in the prior art.

Description

Technical Field

[0001] This invention relates to the field of immersion liquid cooling equipment technology, and more specifically, to an immersion liquid cooling system. Background Technology

[0002] With the development of communication networks and cloud computing, data centers are expanding in scale and experiencing a dramatic increase in heat consumption. Currently, cooling energy consumption accounts for 20%-30% of data center energy consumption, and the energy consumption of cooling systems accounts for more than 20% of the total energy consumption of data centers. Therefore, efficient cooling technology has become crucial for energy conservation in data centers. Immersion liquid cooling technology uses pure liquid as the cooling medium to achieve direct contact heat transfer with high thermal conductivity, resulting in cooling efficiency far exceeding that of air-cooled and water-cooled systems.

[0003] By placing multiple node chassis within the liquid cooling tank of a liquid-cooled cabinet, heat dissipation is achieved for all node chassis. However, when maintenance or replacement of a faulty pump structure is required for at least one of the multiple node chassis, the liquid level in the tank drops after the chassis is removed, making it impossible to effectively dissipate heat to the highest-positioned node chassis within the tank. This severely impacts the operational reliability of the highest-positioned node chassis. Furthermore, replacing the pump structure requires shutting down the liquid-cooled cabinet, which prevents effective heat dissipation for the multiple node chassis within the liquid cooling tank. Summary of the Invention

[0004] The main objective of this invention is to provide an immersion liquid cooling system to solve the problem in the prior art where, after the node chassis is removed from the liquid cooling tank, the liquid level in the tank drops, making it impossible to effectively dissipate heat from the node chassis located at the highest position among the remaining node chassis in the liquid cooling tank. This severely affects the operational reliability of the node chassis located at the highest position. Furthermore, when the pump structure needs to be replaced, the liquid cooling cabinet must be shut down before the pump structure can be replaced, and the shutdown of the liquid cooling cabinet results in the inability to effectively dissipate heat from multiple node chassis in the liquid cooling tank.

[0005] To achieve the above objectives, the present invention provides an immersion liquid cooling system, comprising a liquid tank cabinet, an immersion structure, a heat dissipation cabinet, at least two drain branches, at least two solenoid valves, and a replenishment pipeline. The liquid tank cabinet has a receiving cavity; the immersion structure is disposed within the receiving cavity and includes a liquid cooling tank and multiple replenishment tanks. At least two of the replenishment tanks are connected to the liquid cooling tank. The liquid cooling tank is used to store multiple node chassis, and the replenishment tanks are used to temporarily store coolant overflowing from the liquid cooling tank. The heat dissipation cabinet has a heat exchange section and a heat exchange channel for heat exchange with the heat exchange section. The drain ports of at least one replenishment tank connected to the liquid cooling tank are connected to the inlets of the heat exchange channels via corresponding drain branches. Solenoid valves are installed on at least one drain branch connecting the replenishment tank and the heat exchange channel to independently control each drain branch. The first end of the replenishment pipeline is connected to the outlet of the heat exchange channel, and the second end of the replenishment pipeline is connected to the replenishment port of the liquid cooling tank.

[0006] In an exemplary embodiment, the volume of the liquid cooling tank is greater than the volume of a single replenishment tank, and the opening of the liquid cooling tank is connected to the opening of the replenishment tank through an overflow notch; the volumes of each replenishment tank connected to the liquid cooling tank are equal, the number of node chassis is N, and the volume V1 of the N-1 node chassis and the sum of the volumes V2 of each replenishment tank connected to the liquid cooling tank satisfy the following condition: V2 > V1.

[0007] In one exemplary embodiment, the liquid replenishment port is located on the bottom side wall of the liquid cooling tank; and / or, the liquid drain port is located on the bottom side wall of the liquid replenishment tank.

[0008] In an exemplary embodiment, the receiving cavity includes a first receiving space and a second receiving space that are connected to each other, and the second receiving space is located on at least a portion of the outer periphery of the first receiving space. Two clearance holes are formed on the cavity wall of the receiving cavity. The immersion structure is located within the first receiving space. The first end of each drain branch is connected to the corresponding drain port. The immersion liquid cooling system also includes a drain main, and the second end of each drain branch is connected to the first end of the drain main. The second end of the drain main extends through the first clearance hole. The first end of the replenishment pipe extends through the second clearance hole.

[0009] In one exemplary embodiment, the immersion liquid cooling system further includes at least two pump structures, with a pump structure provided on each drain branch for connecting the replenishment tank and the heat exchange channel, and each pump structure is located downstream of the solenoid valve on the corresponding drain branch.

[0010] In an exemplary embodiment, along the direction from the drain outlet of the replenishment tank to the inlet of the heat exchange channel, each drain branch is sequentially equipped with a solenoid valve, a first hydraulic sensor and / or a first liquid temperature sensor, a filter, a pump body structure, and a first check valve; the immersion liquid cooling system further includes a control module, which is signal-connected to the first hydraulic sensor, and / or, the control module is signal-connected to the first liquid temperature sensor; the control module is control-connected to the solenoid valve, and the control module adjusts the opening size of the solenoid valve according to the hydraulic signal of the drain branch obtained by the first hydraulic sensor; and / or, the control module is control-connected to the solenoid valve, and the control module adjusts the opening size of the solenoid valve according to the temperature signal of the drain branch obtained by the first liquid temperature sensor.

[0011] In one exemplary embodiment, the filter is detachably connected to the drain branch.

[0012] In an exemplary embodiment, the immersion liquid cooling system further includes at least two liquid level sensors and an indication module. Each replenishment tank connected to the liquid cooling tank is equipped with a liquid level sensor, and the liquid level sensor is signal-connected to the control module. The indication module is located on the outer surface of the liquid tank cabinet and is electrically connected to the control module to issue a replenishment indication based on the liquid level signal obtained by the liquid level sensor.

[0013] In one exemplary embodiment, the immersion liquid cooling system further includes a touch panel disposed on the outer surface of the liquid tank cabinet and electrically connected to the control module. The touch panel is used to control the control module to close and open the solenoid valve, and a prompt module is integrated on the touch panel.

[0014] In an exemplary embodiment, a second check valve, a flow meter, a second hydraulic sensor, and / or a second liquid temperature sensor are sequentially arranged on the liquid supply pipeline in the direction from the outlet of the heat exchange channel to the supply port of the liquid cooling tank.

[0015] The present invention provides an immersion liquid cooling system, comprising a liquid tank cabinet, an immersion structure, a heat dissipation cabinet, at least two drain branches, at least two solenoid valves, and a replenishment pipeline. The liquid tank cabinet has a receiving cavity; the immersion structure is disposed within the receiving cavity and includes a liquid cooling tank and multiple replenishment tanks. At least two of the replenishment tanks are connected to the liquid cooling tank. The liquid cooling tank is used to store multiple node chassis, and the replenishment tanks are used to temporarily store coolant overflowing from the liquid cooling tank. The heat dissipation cabinet has a heat exchange section and a heat exchange channel for heat exchange with the heat exchange section. The drain ports of at least each replenishment tank connected to the liquid cooling tank are connected to the inlets of the heat exchange channels via corresponding drain branches. Solenoid valves are installed on at least each drain branch connecting the replenishment tanks and the heat exchange channels to independently control each drain branch. The first end of the replenishment pipeline is connected to the outlet of the heat exchange channel, and the second end of the replenishment pipeline is connected to the replenishment port of the liquid cooling tank.

[0016] By connecting at least two of the multiple replenishment tanks to the liquid cooling tank, after multiple node chassis are placed in the liquid cooling tank, the coolant in the liquid cooling tank overflows into the replenishment tank and is then transported to the heat exchange channels of the heat dissipation cabinet through the drain branch. After heat exchange in the heat exchange section, the high-temperature coolant becomes low-temperature coolant and flows back to the liquid cooling tank through the replenishment pipe. This cycle ensures that the high-temperature coolant continuously flows into the heat exchange channels of the heat dissipation cabinet, and after heat exchange in the heat exchange section, the high-temperature coolant becomes low-temperature coolant and then flows back to the liquid cooling tank through the replenishment pipe. This ensures that the temperature of the coolant in the liquid cooling tank can always be kept within a range that effectively dissipates heat from the node chassis.

[0017] Of course, after one of the node chassis is removed from the liquid cooling tank, the coolant level in the liquid cooling tank drops. At this time, the coolant level in the replenishment tank is higher than that in the liquid cooling tank. As the replenishment pipeline continuously replenishes the liquid cooling tank, the coolant level in the liquid cooling tank slowly recovers and rises. This ensures that the node chassis at the highest position among the remaining node chassis in the liquid cooling tank can still be submerged in coolant, thereby ensuring the reliability of heat dissipation and cooling for the remaining node chassis.

[0018] Furthermore, by installing solenoid valves on each drain branch, at least those used to connect the replenishment tank and the heat exchange channel, each drain branch can be independently controlled. This ensures that when one of the multiple drain branches needs to be disconnected for maintenance, only the solenoid valve on that drain branch needs to be disconnected, while the remaining drain branches can continue to operate normally. This ensures that the immersion liquid cooling system provided in this application can always be in operation to effectively dissipate heat for multiple node chassis at all times. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0020] Figure 1 A schematic flow diagram of an immersion liquid cooling system according to an optional embodiment of the present invention is shown;

[0021] Figure 2 A schematic diagram of the liquid tank cabinet of an immersion liquid cooling system according to an optional embodiment of the present invention is shown;

[0022] Figure 3 It shows Figure 2 A schematic diagram of the exploded structure of the immersion liquid cooling system in the image;

[0023] Figure 4 It shows Figure 2 The diagram shows the internal structure of the immersion liquid cooling system. The two side panels of the liquid tank cabinet are omitted in the diagram.

[0024] Figure 5 It shows Figure 4 A schematic diagram of the liquid tank cabinet of the immersion liquid cooling system, showing the state of coolant overflowing from the liquid cooling tank to the replenishment tank.

[0025] Figure 6 It shows Figure 4 The diagram shows the structure of the liquid tank cabinet of the immersion liquid cooling system. The diagram shows the state of the liquid tank with a lower liquid level due to the lifting of the node cabinet.

[0026] Figure 7 It shows Figure 4 The diagram shows the structure of the liquid tank cabinet of the immersion liquid cooling system. In this diagram, the coolant in the replenishment tank is replenished to the liquid cooling tank through the replenishment pipeline, and the liquid level in the liquid cooling tank rises.

[0027] The above figures include the following reference numerals:

[0028] 10. Liquid tank cabinet; 11. Receiving cavity; 111. Second receiving space; 12. Cabinet body; 13. Top cover;

[0029] 20. Immersion structure; 21. Liquid cooling tank; 211. Liquid inlet; 22. Liquid inlet tank; 221. Liquid outlet;

[0030] 30. Heat dissipation cabinet; 40. Drainage branch; 50. Solenoid valve; 60. Replenishment pipeline; 70. Overflow notch; 80. Drainage main; 90. Pump body structure; 100. First hydraulic sensor; 200. First liquid temperature sensor; 300. Filter; 400. First check valve;

[0031] 500, Control module; 600, Liquid level sensor; 700, Touch panel; 800, Second check valve; 900, Flow meter; 1000, Second hydraulic sensor; 2000, Second liquid temperature sensor; 3000, Liquid outlet of liquid tank cabinet; 4000, Liquid inlet of liquid tank cabinet. Detailed Implementation

[0032] 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, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0033] like Figures 1 to 7 As shown, in order to solve the problem in the prior art that after the node chassis is removed from the liquid cooling tank, the liquid level in the liquid cooling tank drops, making it impossible to effectively dissipate heat from the node chassis located at the highest position in the liquid cooling tank, which seriously affects the operational reliability of the node chassis located at the highest position, and that when the pump body structure needs to be replaced, the liquid cooling cabinet needs to be shut down before the pump body structure can be replaced, and the shutdown of the liquid cooling cabinet makes it impossible to effectively dissipate heat from multiple node chassis in the liquid cooling tank, the present invention provides an immersion liquid cooling system.

[0034] The immersion liquid cooling system includes a liquid tank cabinet 10, an immersion structure 20, a heat dissipation cabinet 30, at least two drain branches 40, at least two solenoid valves 50, and a replenishment pipeline 60. The liquid tank cabinet 10 has a receiving cavity 11. The immersion structure 20 is disposed within the receiving cavity 11 and has a liquid cooling tank 21 and multiple replenishment tanks 22. At least two of the replenishment tanks 22 are connected to the liquid cooling tank 21. The liquid cooling tank 21 is used to store multiple node chassis, and the replenishment tanks 22 are used to temporarily store the coolant overflowing from the liquid cooling tank 21. The heat dissipation cabinet 30 has a heat exchange section and a heat exchange channel for heat exchange with the heat exchange section; the drain ports 221 of each replenishment tank 22 that is connected to the liquid cooling tank 21 are connected to the inlet of the heat exchange channel through corresponding drain branches 40; each drain branch 40 that connects the replenishment tank 22 and the heat exchange channel is equipped with a solenoid valve 50 to independently control each drain branch 40; the first end of the replenishment pipe 60 is connected to the outlet of the heat exchange channel, and the second end of the replenishment pipe 60 is connected to the replenishment port 211 of the liquid cooling tank 21.

[0035] By connecting at least two of the multiple replenishment tanks 22 to the liquid cooling tank 21, after multiple node chassis are placed in the liquid cooling tank 21, the coolant in the liquid cooling tank 21 overflows into the replenishment tanks 22 and is transported to the heat exchange channel of the heat dissipation cabinet 30 through the drain branch 40. After heat exchange in the heat exchange section, the high-temperature coolant becomes low-temperature coolant and flows back to the liquid cooling tank 21 through the replenishment pipe 60. This cycle ensures that the high-temperature coolant continuously flows into the heat exchange channel of the heat dissipation cabinet 30, and after heat exchange in the heat exchange section, the high-temperature coolant becomes low-temperature coolant and then flows back to the liquid cooling tank 21 through the replenishment pipe 60. This ensures that the temperature of the coolant in the liquid cooling tank 21 can always be kept within a range that effectively dissipates heat from the node chassis.

[0036] Of course, after one of the node chassis is removed from the liquid cooling tank 21, the coolant level in the liquid cooling tank 21 drops. At this time, the coolant level in the replenishment tank 22 is higher than the coolant level in the liquid cooling tank 21. As the replenishment pipe 60 continuously replenishes the liquid cooling tank 21, the coolant level in the liquid cooling tank 21 slowly recovers and rises. This ensures that the node chassis at the highest position among the remaining node chassis in the liquid cooling tank 21 can still be submerged in coolant, thereby ensuring the reliability of heat dissipation and cooling for the remaining node chassis.

[0037] Furthermore, by providing solenoid valves 50 on each drain branch 40 that connects the replenishment tank 22 and the heat exchange channel, each drain branch 40 can be independently controlled. This ensures that when one of the drain branches 40 is disconnected for maintenance, the solenoid valve 50 on that drain branch 40 can be disconnected individually, while the remaining drain branches 40 can operate normally. This ensures that the immersion liquid cooling system provided in this application can always be in operation to effectively dissipate heat for multiple node chassis at all times.

[0038] It should be noted that, in a specific embodiment of this application, there are two replenishment tanks 22, both of which are connected to the liquid cooling tank 21, and there are two drainage branches 40, which correspond one-to-one with the two replenishment tanks 22, so that this application can realize a dual water path design and support independent control of the two drainage branches 40.

[0039] Alternatively, the heat exchange section can be a fan blowing air to remove heat from the heat exchange channel, or the heat exchange section can be a cold water exchanged with a high-temperature coolant in the heat exchange channel for cooling.

[0040] It should be noted that in this application, the volume of a single node chassis is calculated first, assuming that the liquid cooling tank 21 can accommodate N node chassis, such as... Figure 3 , Figures 5 to 7As shown, the volume of the liquid cooling tank 21 is greater than the volume of a single replenishment tank 22, and the opening of the liquid cooling tank 21 is connected to the opening of the replenishment tank 22 through an overflow notch 70. The volumes of each replenishment tank 22 connected to the liquid cooling tank 21 are equal. The number of node chassis is N, and the volume V1 of the N-1 node chassis and the sum of the volumes V2 of each replenishment tank 22 connected to the liquid cooling tank 21 satisfy the condition: V2 > V1. This ensures that even if only one node chassis remains, it can still continue to operate and dissipate heat. In the case of the actual sample, the volume of the left and right replenishment tanks 22 will be designed according to the space size of the entire liquid tank cabinet 10's cavity 11 and the number of nodes that can be maintained simultaneously. However, it is necessary to ensure that the volume of coolant that can be contained is greater than the volume of one node chassis, so that the system can operate without stopping when maintaining at least a single node chassis.

[0041] like Figures 3 to 7 As shown, the liquid inlet 211 is located on the bottom side wall of the liquid cooling tank 21; and / or, the drain outlet 221 is located on the bottom side wall of the liquid replenishment tank 22. Thus, by setting the liquid inlet 211 to be located on the bottom side wall of the liquid cooling tank 21, and / or the drain outlet 221 to be located on the bottom side wall of the liquid replenishment tank 22, the low-temperature coolant after heat exchange enters the liquid cooling tank 21 from the bottom liquid inlet 211 and flows through the node chassis to absorb heat before overflowing into the adjacent liquid replenishment tank 22. The high-temperature coolant flows from the drain outlet 221 at the bottom of the liquid replenishment tank 22 through the drain branch 40 into the heat exchange channel of the heat dissipation cabinet 30, and undergoes heat exchange through the heat exchange section, thereby becoming low-temperature coolant that continues to flow into the liquid cooling tank 21 to effectively dissipate heat from the node chassis inside.

[0042] like Figure 4 As shown, the receiving cavity 11 includes a first receiving space and a second receiving space 111 that are connected to each other, and the second receiving space 111 is located on at least part of the outer periphery of the first receiving space. Two clearance holes are opened on the cavity wall of the receiving cavity 11. The immersion structure 20 is located in the first receiving space. The first end of each drain branch 40 is connected to the corresponding drain port 221. The immersion liquid cooling system also includes a drain main 80. The second end of each drain branch 40 is connected to the first end of the drain main 80. The second end of the drain main 80 is provided to pass through the first clearance hole. The first end of the replenishment pipe 60 is provided to pass through the second clearance hole. In this way, by setting the receiving cavity 11 into a structure that includes a first receiving space and a second receiving space 111 that are connected, the space inside the receiving cavity 11 is fully utilized, so that each drain branch 40 is mounted in the second receiving space 111 through a support frame, making full use of the vertical space of the second receiving space 111, and ensuring that the overall volume of the receiving cavity 11 of the liquid tank cabinet 10 will not be too large due to the setting of each drain branch 40.

[0043] It should be noted that, in this application, the first clearance through hole mentioned above can be the liquid outlet 3000 of the liquid tank cabinet, and the second clearance through hole can be the liquid inlet 4000 of the liquid tank cabinet.

[0044] like Figure 1 and Figure 4 As shown, the immersion liquid cooling system also includes at least two pump structures 90. Each drain branch 40 connecting the replenishment tank 22 and the heat exchange channel is equipped with a pump structure 90, and each pump structure 90 is located downstream of the solenoid valve 50 on the corresponding drain branch 40. Thus, the pump structures 90 provide power for the circulation of coolant in each drain branch 40.

[0045] like Figure 1 As shown, in the direction from the drain port 221 of the replenishment tank 22 to the inlet of the heat exchange channel, each drain branch 40 is sequentially equipped with a solenoid valve 50, a first hydraulic sensor 100 and / or a first liquid temperature sensor 200, a filter 300, a pump body structure 90, and a first check valve 400. The immersion liquid cooling system also includes a control module 500, which is signal-connected to the first hydraulic sensor 100 and / or to the first liquid temperature sensor 200. The control module 500 is also control-connected to the solenoid valve 50, and adjusts the opening size of the solenoid valve 50 according to the hydraulic signal of the drain branch 40 obtained by the first hydraulic sensor 100. The control module 500 is also control-connected to the solenoid valve 50, and adjusts the opening size of the solenoid valve 50 according to the temperature signal of the drain branch 40 obtained by the first liquid temperature sensor 200. The immersion liquid cooling system also includes a touch panel 700, which is located on the outer surface of the liquid tank cabinet 10 and is electrically connected to the control module 500. The touch panel 700 is used to control the control module 500 to close and open the solenoid valve 50. In this way, by placing the solenoid valve 50 and the first check valve 400 on the drain branch 40 at the head and tail respectively, when any structural component on the drain branch 40 needs to be replaced, the operator can close the solenoid valve 50 on the drain branch 40 to be maintained by operating the touch panel 700. This makes the pipeline between the solenoid valve 50 and the first check valve 400 in the drain branch 40 closed, which facilitates the subsequent maintenance or replacement of the structural components on the drain branch 40. In addition, this application has two replenishment tanks 22 and two drain branches 40. When one drain branch 40 is disconnected for maintenance, the other drain branch 40 can still be kept running, so as to achieve the purpose of maintenance without stopping the machine.

[0046] It should be noted that in this application, the filter 300 is detachably connected to the drain branch 40. This facilitates the disassembly and cleaning of the filter 300, thereby maintaining the cleanliness of the entire drain branch 40.

[0047] like Figures 5 to 7 As shown, Figure 5 This diagram shows the structure of the coolant overflowing from the liquid cooling tank 21 to the replenishment tank 22. Figure 6 This diagram illustrates the state of the liquid cooling tank as the node chassis is lifted, causing the liquid level to drop. Figure 7 This diagram illustrates the structure where coolant in the replenishment tank 22 is supplied to the liquid cooling tank 21 via the replenishment pipe 60, and the coolant level in the liquid cooling tank 21 rises. Figure 5 Horizontal line A indicates that the coolant in liquid cooling tank 21 and the coolant in replenishment tank 22 are level. Figure 6 The horizontal dashed line B in the diagram indicates the position where the coolant level in the liquid cooling tank 21 drops after a certain node chassis is removed from the liquid cooling tank 21. Figure 6 The horizontal dashed line C in the figure represents the coolant level in the replenishment tank 22. Figure 7 The horizontal line D in the diagram indicates the coolant level in the liquid cooling tank 21 after replenishment. Figure 7 The horizontal line E in the figure indicates the coolant level in the replenishment tank 22 after the draining process.

[0048] Specifically, Figure 5 In the process of normal operation after the node chassis is installed, the liquid cooling tank 21 will have a coolant level higher than the partition between the liquid cooling tank 21 and the replenishment tank 22. This allows the coolant to pass over the partitions and enter the two replenishment tanks 22 on either side. If maintenance is performed on the node chassis at this time, the coolant level will drop as the node chassis is lifted. Figure 6 As shown, the liquid level in liquid cooling tank 21 will drop, while the liquid level in replenishment tank 22, due to the isolation of the baffle, will be higher than the liquid level in liquid cooling tank 21 at the moment the node chassis is lifted; as shown Figure 7As shown, after the node chassis is raised, the liquid in the replenishment tank 22 will circulate into the liquid cooling tank 21 after a period of time. The liquid level in the liquid cooling tank 21 will be replenished to the top height of the partition before overflowing into the replenishment tank 22, while the liquid level in the replenishment tank 22 will drop. This means that the liquid shortage in the liquid cooling tank 21 will be filled by the coolant in the replenishment tank 22. In this way, even if the coolant is reduced due to node chassis maintenance or other reasons, the large-capacity replenishment tank 22 plays a key replenishment function, which can ensure that the nodes in the liquid cooling tank 21 still receive enough coolant for heat dissipation. A liquid level sensor 600 needs to be installed in the replenishment tank 22. When the liquid decreases too much and affects the outlet, an alarm will be triggered on the touch panel 700 on the front of the liquid tank cabinet 10 to remind you to replenish the coolant.

[0049] Specifically, the immersion liquid cooling system also includes at least two liquid level sensors 600 and an indication module. Each replenishment tank 22 connected to the liquid cooling tank 21 is equipped with a liquid level sensor 600, and the liquid level sensors 600 are signal-connected to the control module 500. The indication module is located on the outer surface of the liquid tank cabinet 10 and is electrically connected to the control module 500 to issue a replenishment indication based on the liquid level signal acquired by the liquid level sensors 600. The immersion liquid cooling system also includes a touch panel 700, which is located on the outer surface of the liquid tank cabinet 10 and is electrically connected to the control module 500. The touch panel 700 controls the control module 500 to close and open the solenoid valve 50. The indication module is integrated into the touch panel 700.

[0050] Furthermore, such as Figure 1 and Figure 2 As shown, the immersion liquid cooling system also includes a touch panel 700, which is located on the outer surface of the liquid tank cabinet 10 and is electrically connected to the control module 500. The touch panel 700 controls the control module 500 to close and open the solenoid valve 50. The prompt module is integrated at the touch panel 700.

[0051] like Figure 1 As shown, in the direction from the outlet of the heat exchange channel to the replenishment port 211 of the liquid cooling tank 21, the replenishment pipeline 60 is sequentially equipped with a second check valve 800, a flow meter 900, a second hydraulic sensor 1000 and / or a second liquid temperature sensor 2000.

[0052] like Figures 2 to 4 As shown, the liquid tank cabinet 10 includes a cabinet body 12 and a top cover 13. The top cover 13 covers the opening of the receiving cavity 11, and the opening of the receiving cavity 11 is set upward.

[0053] It should be noted that in this application, the pump body structure 90 is a liquid pump.

[0054] It should be noted that in this application, the liquid cooling tank 21 must ensure that the internal node chassis can maintain a strong heat dissipation capacity at all times. The continuous flow of liquid conducts heat energy and has a large specific heat capacity, which can ensure that the chip will not overheat and fail during high-frequency operation within a certain range. Therefore, the redundancy of the dual water pump is an important function to ensure the operation of the overall liquid cooling tank. The additional high-capacity replenishment tank 22 can maintain the liquid level of the liquid cooling tank 21 when the node chassis is removed for maintenance, ensuring that the heat dissipation of the other node chassis is not affected. Through the introduction of liquid pump redundancy and high-capacity replenishment tank 22, this immersion liquid cooling system can significantly reduce the time that the node chassis is affected by overheating during failure or maintenance, ensuring that the liquid cooling tank 21 can continue to operate without interruption.

[0055] This invention proposes an immersion liquid cooling system. By increasing the space of the replenishment tank 22 next to the liquid cooling tank 21 to accommodate coolant, the replenishment tank 22, which originally receives coolant overflowing from the liquid cooling tank 21, is enlarged to prevent air from being drawn in and causing liquid to leak out from the bottom pipe. In addition to its original function, when the liquid level in the liquid cooling tank 21 drops due to liquid loss or maintenance of the nodes, the excess coolant in the replenishment tank 22 can be replenished into the liquid cooling tank 21 in a timely manner, ensuring that the liquid level in the liquid cooling tank 21 remains constant. Various sensing and monitoring components and independent liquid pumps are installed on the pipes exiting from the left and right replenishment tanks 22 to achieve redundancy. When the liquid pump needs to be replaced or repaired, the solenoid valve on the pipe can be closed to block the removal of the liquid pump on one side of the pipe. The dual independent pipes and dual independent liquid pumps ensure the continuous operation of the liquid cooling tank.

[0056] The present invention provides an immersion liquid cooling system, comprising a liquid tank cabinet 10, an immersion structure 20, a heat dissipation cabinet 30, at least two drain branches 40, at least two solenoid valves 50, and a replenishment pipeline 60. The liquid tank cabinet 10 has a receiving cavity 11; the immersion structure 20 is disposed within the receiving cavity 11, and the immersion structure 20 has a liquid cooling tank 21 and multiple replenishment tanks 22. At least two of the multiple replenishment tanks 22 are connected to the liquid cooling tank 21. The liquid cooling tank 21 is used to store multiple node chassis, and the replenishment tanks 22 are used to temporarily store liquid-cooled components. The coolant overflows from the tank 21; the heat dissipation cabinet 30 has a heat exchange section and a heat exchange channel for heat exchange with the heat exchange section; the drain ports 221 of each replenishment tank 22 that is connected to the liquid cooling tank 21 are connected to the inlet of the heat exchange channel through corresponding drain branches 40; each drain branch 40 that connects the replenishment tank 22 and the heat exchange channel is equipped with a solenoid valve 50 to independently control each drain branch 40; the first end of the replenishment pipe 60 is connected to the outlet of the heat exchange channel, and the second end of the replenishment pipe 60 is connected to the replenishment port 211 of the liquid cooling tank 21.

[0057] By connecting at least two of the multiple replenishment tanks 22 to the liquid cooling tank 21, after multiple node chassis are placed in the liquid cooling tank 21, the coolant in the liquid cooling tank 21 overflows into the replenishment tanks 22 and is transported to the heat exchange channel of the heat dissipation cabinet 30 through the drain branch 40. After heat exchange in the heat exchange section, the high-temperature coolant becomes low-temperature coolant and flows back to the liquid cooling tank 21 through the replenishment pipe 60. This cycle ensures that the high-temperature coolant continuously flows into the heat exchange channel of the heat dissipation cabinet 30, and after heat exchange in the heat exchange section, the high-temperature coolant becomes low-temperature coolant and then flows back to the liquid cooling tank 21 through the replenishment pipe 60. This ensures that the temperature of the coolant in the liquid cooling tank 21 can always be kept within a range that effectively dissipates heat from the node chassis.

[0058] Of course, after one of the node chassis is removed from the liquid cooling tank 21, the coolant level in the liquid cooling tank 21 drops. At this time, the coolant level in the replenishment tank 22 is higher than the coolant level in the liquid cooling tank 21. As the replenishment pipe 60 continuously replenishes the liquid cooling tank 21, the coolant level in the liquid cooling tank 21 slowly recovers and rises. This ensures that the node chassis at the highest position among the remaining node chassis in the liquid cooling tank 21 can still be submerged in coolant, thereby ensuring the reliability of heat dissipation and cooling for the remaining node chassis.

[0059] Furthermore, by providing solenoid valves 50 on each drain branch 40 that connects the replenishment tank 22 and the heat exchange channel, each drain branch 40 can be independently controlled. This ensures that when one of the drain branches 40 is disconnected for maintenance, the solenoid valve 50 on that drain branch 40 can be disconnected individually, while the remaining drain branches 40 can operate normally. This ensures that the immersion liquid cooling system provided in this application can always be in operation to effectively dissipate heat for multiple node chassis at all times.

[0060] The beneficial effects of the technical solution of this invention are as follows:

[0061] The immersion liquid cooling solution of this application can significantly improve the maintainability and reliability of the liquid tank cabinet 10. The dual-channel liquid pump redundancy can replace damaged liquid pumps or sensors more quickly. In particular, when the filter needs to be cleaned periodically, the entire cabinet does not need to be shut down to avoid business disruption. When the liquid level in the main liquid tank drops due to liquid leakage or when the node is removed for maintenance, the coolant in the high-capacity replenishment tank 22 can be replenished into the main liquid tank in time to ensure that the liquid level in the main liquid tank remains unchanged and avoid affecting the heat dissipation of the immersion node. Through these two features, the operation of the overall liquid cooling tank can be guaranteed, which has better application advantages than other competing products.

[0062] Potential market: High. This invention can be used in all immersion tank cabinets, and its application scope and level are very wide.

[0063] Value in solving the problem: Very high. This invention can greatly improve the maintainability and reliability of liquid tanks.

[0064] Cost savings: High. This invention reduces the difficulty of liquid tank maintenance and operating costs.

[0065] Advancedness: High. Although the embodiments of this proposal are existing technologies, no existing solution achieves this effect. In comparison, the concept of this proposal itself is advanced.

[0066] Innovation: High. The dual-water-path dual-liquid pump design proposed in this invention has not been seen in other competing products. The combination of solenoid valve and check valve can achieve quick replacement of parts. Compared with existing solutions, it is an innovative design.

[0067] Feasibility: Very high. All embodiments are 100% feasible and are mass-producible designs.

[0068] What are the key technical points and areas to be protected in this application?

[0069] The liquid tank cabinet 10 of this application supports a dual-circuit liquid pump redundancy structure, which allows the liquid tank to be maintained without shutting down the entire liquid tank cabinet and its internal nodes when problems occur and components such as liquid pumps need to be replaced, thereby increasing the maintainability and reliability of the system.

[0070] The liquid tank cabinet 10 of this application supports the liquid replenishment function of the high-capacity liquid replenishment tank 22. Compared with the liquid tank of the existing solution, it can continuously maintain the heat dissipation capacity of the immersion node, and will not cause overheating due to the reduction of coolant, thereby reducing the risk of shutdown and increasing the reliability of the system.

[0071] This application's immersion liquid cooling solution integrates innovative design and high reliability, encompassing an innovative immersion liquid cooling cabinet and its supporting liquid-cooled server heat dissipation solution. It pioneered two innovative design concepts for the continuous operation of the immersion liquid tank without downtime during equipment maintenance, surpassing other current patents or products. Through the support of dual-channel liquid pump redundancy and a high-capacity replenishment tank 22, the maintainability and reliability of the liquid tank can be greatly improved. In short, this invention provides a solution that addresses the weaknesses of existing patents. Overall, this invention has greater utilization value than other related inventions and deserves patent protection.

[0072] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0073] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0074] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0075] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0076] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0077] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An immersion liquid cooling system, characterized in that, include: Liquid tank cabinet (10), the liquid tank cabinet (10) having a receiving cavity (11); An immersion structure (20) is disposed in the receiving cavity (11). The immersion structure (20) has a liquid cooling tank (21) and a plurality of replenishment tanks (22). At least two of the plurality of replenishment tanks (22) are connected to the liquid cooling tank (21). The liquid cooling tank (21) is used to store a plurality of node chassis. The replenishment tanks (22) are used to temporarily store the coolant overflowing from the liquid cooling tank (21). A heat dissipation cabinet (30) has a heat exchange section and a heat exchange flow channel that exchanges heat with the heat exchange section. At least two drain branches (40) and the drain ports (221) of each of the replenishment tanks (22) connected to the liquid cooling tank (21) are connected to the inlet of the heat exchange channel through the corresponding drain branches (40); At least two solenoid valves (50) are provided on each of the drain branches (40) that connect the replenishment tank (22) and the heat exchange channel, so as to independently control each of the drain branches (40). The replenishment pipeline (60) has its first end connected to the outlet of the heat exchange channel and its second end connected to the replenishment port (211) of the liquid cooling tank (21). The volume of the liquid cooling tank (21) is greater than the volume of a single replenishment tank (22), and the opening of the liquid cooling tank (21) is connected to the opening of the replenishment tank (22) through an overflow notch (70). The volumes of each of the replenishment tanks (22) connected to the liquid cooling tank (21) are equal. The number of node chassis is N. The volume V1 of N-1 node chassis and the sum of the volumes V2 of each of the replenishment tanks (22) connected to the liquid cooling tank (21) satisfy the following: V2 > V1. The receiving cavity (11) includes a first receiving space and a second receiving space (111) that are connected to each other, and the second receiving space (111) is located on at least part of the outer periphery of the first receiving space. Two clearance holes are provided on the cavity wall surface of the receiving cavity (11). The immersion structure (20) is located within the first accommodating space; The first end of each of the drainage branches (40) is connected to the corresponding drainage port (221); The immersion liquid cooling system also includes: The second end of each of the drainage branches (40) is connected to the first end of the drainage main (80), and the second end of the drainage main (80) extends through the first clearance through hole. The first end of the replenishment pipeline (60) extends through the second clearance through hole; Among them, each of the replenishing tanks (22) connected to the liquid cooling tank (21) is located on the outer surface of the liquid cooling tank (21), and each of the replenishing tanks (22) is isolated by a partition. When the liquid level of the coolant in the liquid cooling tank (21) is higher than the partition, the coolant in the liquid cooling tank (21) overflows to each of the replenishing tanks (22).

2. The immersion liquid cooling system according to claim 1, characterized in that, The liquid replenishment port (211) is located on the bottom side wall of the liquid cooling tank (21); and / or, The drain port (221) is located on the bottom side wall of the replenishment tank (22).

3. The immersion liquid cooling system according to claim 1, characterized in that, The immersion liquid cooling system also includes: At least two pump body structures (90) are provided on each of the drainage branches (40) that connect the replenishment tank (22) and the heat exchange channel, and each of the pump body structures (90) is located downstream of the solenoid valve (50) on the corresponding drainage branch (40).

4. The immersion liquid cooling system according to any one of claims 1 to 3, characterized in that, In the direction from the drain port (221) of the replenishment tank (22) to the inlet of the heat exchange channel, each of the drain branches (40) is sequentially provided with the solenoid valve (50), the first hydraulic sensor (100) and / or the first liquid temperature sensor (200), the filter (300), the pump body structure (90), and the first check valve (400). The immersion liquid cooling system also includes: A control module (500) is connected to the first hydraulic sensor (100) via signal, and / or the control module (500) is connected to the first liquid temperature sensor (200) via signal; The control module (500) is connected to the solenoid valve (50) and adjusts the opening size of the solenoid valve (50) according to the hydraulic signal of the drain branch (40) obtained by the first hydraulic sensor (100); and / or, The control module (500) is connected to the solenoid valve (50) and the control module (500) adjusts the opening size of the solenoid valve (50) according to the temperature signal of the drain branch (40) obtained by the first liquid temperature sensor (200).

5. The immersion liquid cooling system according to claim 4, characterized in that, The filter (300) is detachably connected to the drain branch (40).

6. The immersion liquid cooling system according to claim 4, characterized in that, The immersion liquid cooling system also includes: At least two liquid level sensors (600) are provided in each of the replenishment tanks (22) that are connected to the liquid cooling tank (21), and the liquid level sensors (600) are signal connected to the control module (500). The prompting module is located on the outer surface of the liquid tank cabinet (10) and is electrically connected to the control module (500) to issue a prompting liquid replenishment instruction based on the liquid level signal obtained by the liquid level sensor (600).

7. The immersion liquid cooling system according to claim 6, characterized in that, The immersion liquid cooling system also includes: A touch panel (700) is disposed on the outer surface of the liquid tank cabinet (10) and is electrically connected to the control module (500). The touch panel (700) is used to control the control module (500) to close and open the solenoid valve (50). The prompt module is integrated on the touch panel (700).

8. The immersion liquid cooling system according to any one of claims 1 to 3, characterized in that, In the direction from the outlet of the heat exchange channel to the replenishment port (211) of the liquid cooling tank (21), the replenishment pipeline (60) is sequentially provided with a second check valve (800), a flow meter (900), a second hydraulic sensor (1000) and / or a second liquid temperature sensor (2000).

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