Immersed liquid cooling system

Abstract

An immersed liquid cooling system provided by the present invention comprises a liquid tank cabinet, an immersion structure, a heat dissipation cabinet, at least two liquid discharge branches, at least two solenoid valves and a liquid supplementing pipeline, the immersion structure is arranged in an accommodating cavity of the liquid tank cabinet, the immersion structure is provided with a liquid cooling tank and a plurality of liquid supplementing tanks, and at least two of the plurality of liquid supplementing tanks are communicated with the liquid cooling tank; the heat dissipation cabinet is provided with a heat exchange part and a heat exchange flow channel which exchanges heat with the heat exchange part; a liquid outlet of each liquid supplementing tank at least communicated with the liquid cooling tank is communicated with a liquid inlet of the heat exchange runner through each corresponding liquid outlet branch; an electromagnetic valve is arranged on each liquid discharging branch at least used for communicating the liquid supplementing tank with the heat exchange runner; the first end of the liquid supplementing pipeline communicates with the liquid outlet of the heat exchange runner, and the second end of the liquid supplementing pipeline communicates with the liquid supplementing opening of the liquid cooling groove. According to the invention, the problem that a plurality of node cases in a liquid cooling tank cannot be effectively cooled due to shutdown of a liquid cooling cabinet in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of immersion liquid cooling equipment, and in particular to an immersion liquid cooling system. Background Art

[0002] With the development of communication networks and cloud computing, the scale of data centers continues to expand, and heat consumption has increased dramatically. At present, refrigeration energy consumption accounts for 20%-30% of the energy consumption of data centers, and the energy consumption of cooling systems accounts for more than 20% of the energy consumption of data centers. Efficient cooling technology has become the key to energy saving in data centers. Immersion liquid cooling technology uses pure liquid as the cooling medium to achieve direct contact heat transfer with high thermal conductivity, and the cooling efficiency is much higher than that of air cooling and water cooling systems.

[0003] By placing multiple node chassis in the liquid cooling tank of the liquid cooling cabinet, heat dissipation of the multiple node chassis is achieved. However, when at least one of the multiple node chassis needs to be maintained or a pump body structure with a fault in the pipeline needs to be replaced, the liquid level of the liquid cooling tank drops after the node chassis is taken out of the liquid cooling tank, and the node chassis located at the highest position in the remaining node chassis in the liquid cooling tank cannot be effectively cooled, seriously affecting the operational reliability of the node chassis located at the highest position. In the latter, when the pump body structure is replaced, the liquid cooling cabinet needs to be shut down for replacement of the pump body structure, and the shutdown of the liquid cooling cabinet makes it impossible to effectively cool the multiple node chassis in the liquid cooling tank. Summary of the invention

[0004] The main purpose of the present invention is to provide an immersion liquid cooling system to solve the problem in the prior art that after the node chassis is taken out of the liquid cooling tank, the liquid level of the liquid cooling tank drops, and the node chassis located at the highest position in the remaining node chassis in the liquid cooling tank cannot be effectively cooled, which seriously affects the operation reliability of the node chassis located at the highest position. The latter requires the liquid cooling cabinet to be shut down for replacement of the pump body structure, and the shutdown of the liquid cooling cabinet makes it impossible to effectively cool multiple node chassis in the liquid cooling tank.

[0005] In order to achieve the above-mentioned purpose, the present invention provides an immersion liquid cooling system, including a liquid tank cabinet, an immersion structure, a heat dissipation cabinet, at least two drainage branches, at least two solenoid valves and a liquid replenishment pipeline, wherein the liquid tank cabinet has a accommodating cavity; the immersion structure is arranged in the accommodating cavity, the immersion structure has a liquid cooling tank and multiple liquid replenishment tanks, at least two of the multiple liquid replenishment tanks are connected to the liquid cooling tank, the liquid cooling tank is used to store multiple node chassis, and the liquid replenishment tank is used to temporarily store the coolant overflowed from the liquid cooling tank; the heat dissipation cabinet has a heat exchange part and a heat exchange flow channel for heat exchange with the heat exchange part; at least the drainage ports of each liquid replenishment tank connected to the liquid cooling tank are connected to the liquid inlet of the heat exchange flow channel through the corresponding drainage branches; at least each drainage branch used to connect the liquid replenishment tank and the heat exchange flow channel is provided with a solenoid valve to independently control each drainage branch; the first end of the liquid replenishment pipeline is connected to the liquid outlet of the heat exchange flow channel, and the second end of the liquid replenishment pipeline is connected to the liquid 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 liquid replenishment tank, and the slot of the liquid cooling tank is connected to the slot of the liquid replenishment tank through an overflow notch; the volumes of each liquid replenishment tank connected to the liquid cooling tank 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 liquid replenishment tank connected to the liquid cooling tank satisfy: V2>V1.

[0007] In an exemplary embodiment, the liquid replenishing port is located at the bottom side wall surface of the liquid cooling tank; and / or the liquid drain port is located at the bottom side wall surface of the liquid replenishing tank.

[0008] In an exemplary embodiment, the accommodating chamber includes a first accommodating space and a second accommodating space that are connected to each other, and the second accommodating space is located on at least a portion of the outer peripheral side of the first accommodating space, and two avoidance holes are opened on the wall surface of the accommodating chamber; the immersion structure is located in the first accommodating space; the first end of each drainage branch is connected to the corresponding drainage ports; the immersion liquid cooling system also includes a drainage trunk line, the second end of each drainage branch is connected to the first end of the drainage trunk line, and the second end of the drainage trunk line passes through the first avoidance hole setting; the first end of the liquid replenishment pipeline passes through the second avoidance hole setting.

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

[0010] In an exemplary embodiment, in the direction from the discharge port of the fluid replenishment tank to the liquid inlet of the heat exchange flow channel, 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 are sequentially arranged on each discharge branch; the immersion liquid cooling system also includes a control module, which is connected to the first hydraulic sensor signal, and / or the control module is connected to the first liquid temperature sensor signal; 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 discharge 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 discharge branch obtained by the first liquid temperature sensor.

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

[0012] In an exemplary embodiment, the immersion liquid cooling system also includes at least two liquid level sensors and a prompt module, wherein a liquid level sensor is provided in at least each liquid replenishment tank connected to the liquid cooling tank, and the liquid level sensor is connected to the control module signal; the prompt module is arranged on the outer surface of the liquid tank cabinet, and the prompt module is electrically connected to the control module to issue a prompt liquid replenishment indication according to the liquid level signal obtained by the liquid level sensor.

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

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

[0015] By applying the technical solution of the present invention, an immersion liquid cooling system is provided, comprising a liquid tank cabinet, an immersion structure, a heat dissipation cabinet, at least two drainage branches, at least two solenoid valves and a liquid replenishment pipeline, wherein the liquid tank cabinet has a accommodating cavity; the immersion structure is arranged in the accommodating cavity, the immersion structure has a liquid cooling tank and a plurality of liquid replenishment tanks, at least two of the plurality of liquid replenishment tanks are connected with the liquid cooling tank, the liquid cooling tank is used to store a plurality of node chassis, and the liquid replenishment tank is used to temporarily store the coolant overflowed from the liquid cooling tank; the heat dissipation cabinet has a heat exchange part and a heat exchange flow channel for heat exchange with the heat exchange part; at least the drainage ports of each liquid replenishment tank connected with the liquid cooling tank are connected with the liquid inlet of the heat exchange flow channel through the corresponding drainage branches; at least each drainage branch used to connect the liquid replenishment tank and the heat exchange flow channel is provided with a solenoid valve to independently control each drainage branch; the first end of the liquid replenishment pipeline is connected with the liquid outlet of the heat exchange flow channel, and the second end of the liquid replenishment pipeline is connected with the liquid replenishment port of the liquid cooling tank.

[0016] By connecting at least two of the multiple liquid replenishment tanks with the liquid cooling tank, after placing multiple node chassis in the liquid cooling tank, the coolant in the liquid cooling tank will overflow into the liquid replenishment tank, and the coolant will be transported to the heat exchange channel of the heat dissipation cabinet through the drainage branch. After the heat exchange operation of the heat exchange part, the high-temperature coolant is converted into low-temperature coolant, and then flows back to the liquid cooling tank through the liquid replenishment pipeline. In this cycle, the high-temperature coolant continuously flows into the heat exchange channel of the heat dissipation cabinet, and after the heat exchange operation of the heat exchange part, the high-temperature coolant is converted into low-temperature coolant, and then flows back to the liquid cooling tank through the liquid replenishment pipeline, ensuring that the temperature of the coolant in the liquid cooling tank can be kept as much as possible within the range that effectively dissipates heat for the node chassis.

[0017] Of course, after one of the multiple node chassis is extracted and leaves the liquid cooling tank, the liquid level of the coolant in the liquid cooling tank drops. At this time, the liquid level of the coolant in the replenishing tank is higher than the liquid level of the coolant in the liquid cooling tank. Since the replenishing pipeline continuously replenishes liquid into the liquid cooling tank, the liquid level of the coolant in the liquid cooling tank slowly recovers and rises, at least ensuring that the node chassis at the highest position among the remaining node chassis in the liquid cooling tank can still be immersed in the coolant, thereby ensuring the heat dissipation and cooling reliability of the remaining node chassis.

[0018] In addition, by providing solenoid valves on at least each drainage branch connecting the liquid replenishment tank and the heat exchange flow channel, each drainage branch can be independently controlled to ensure that when one of the multiple drainage branches is disconnected for maintenance, the solenoid valve on the drainage branch can be controlled separately to be disconnected, and the remaining drainage branches can operate normally, ensuring that the immersion liquid cooling system provided in the present application can always be in an operating state to effectively dissipate heat for multiple node chassis at all times. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

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

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

[0022] Figure 3 Shows Figure 2 Schematic diagram of the exploded structure of the immersion liquid cooling system;

[0023] Figure 4 Shows Figure 2 A schematic diagram of the internal structure of the immersion liquid cooling system in FIG. 1 , in which two enclosures of the liquid tank cabinet are omitted;

[0024] Figure 5 Shows Figure 4 A schematic diagram of the structure of a liquid tank cabinet of an immersion liquid cooling system in FIG. 1 , in which a schematic diagram of the structure of a state in which the coolant in the liquid cooling tank overflows into the liquid replenishing tank;

[0025] Figure 6 Shows Figure 4 A schematic diagram of the structure of a liquid tank cabinet of an immersion liquid cooling system in FIG. 1 , in which a schematic diagram of the structure of a state in which the liquid level of the liquid cooling tank is lowered due to lifting the node chassis;

[0026] Figure 7 Shows Figure 4 A schematic diagram of the structure of a liquid tank cabinet of an immersion liquid cooling system in the figure, in which the coolant in the liquid replenishment tank is replenished into the liquid cooling tank through the liquid replenishment pipeline, and a schematic diagram of the structure of the state in which the coolant level in the liquid cooling tank rises.

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

[0028] 10. liquid tank cabinet; 11. accommodating cavity; 111. second accommodating space; 12. cabinet body; 13. upper cover;

[0029] 20. Immersion structure; 21. Liquid cooling tank; 211. Liquid replenishing port; 22. Liquid replenishing tank; 221. Liquid draining port;

[0030] 30. heat dissipation cabinet; 40. drainage branch; 50. solenoid valve; 60. liquid replenishment pipeline; 70. overflow notch; 80. drainage trunk; 90. pump body structure; 100. first hydraulic pressure 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 pressure sensor; 2000, second liquid temperature sensor; 3000, liquid outlet of liquid tank cabinet; 4000, liquid inlet of liquid tank cabinet. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work 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 taken out of the liquid cooling tank, the liquid level of the liquid cooling tank drops, and the node chassis located at the highest position in the remaining node chassis in the liquid cooling tank cannot be effectively cooled, which seriously affects the operation reliability of the node chassis located at the highest position. When the pump body structure is replaced, the liquid cooling cabinet needs to be shut down for the replacement of the pump body structure, and the shutdown of the liquid cooling cabinet makes it impossible to effectively dissipate heat for 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 drainage branches 40, at least two solenoid valves 50 and a liquid replenishment pipeline 60, wherein the liquid tank cabinet 10 has a receiving cavity 11; the immersion structure 20 is arranged in the receiving cavity 11, the immersion structure 20 has a liquid cooling tank 21 and a plurality of liquid replenishment tanks 22, at least two of the plurality of liquid 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, and the liquid replenishment tank 22 is used to temporarily store the coolant overflowed from the liquid cooling tank 21 The heat dissipation cabinet 30 has a heat exchange part and a heat exchange channel for exchanging heat with the heat exchange part; at least the drain ports 221 of each liquid replenishing tank 22 connected to the liquid cooling tank 21 are connected to the liquid inlet of the heat exchange channel through the corresponding drain branches 40; at least each drain branch 40 used to connect the liquid replenishing tank 22 and the heat exchange channel is provided with a solenoid valve 50 to independently control each drain branch 40; the first end of the liquid replenishing pipeline 60 is connected to the liquid outlet of the heat exchange channel, and the second end of the liquid replenishing pipeline 60 is connected to the liquid replenishing port 211 of the liquid cooling tank 21.

[0035] By connecting at least two of the multiple liquid replenishing tanks 22 with the liquid cooling tank 21, after placing multiple node chassis in the liquid cooling tank 21, the coolant in the liquid cooling tank 21 will overflow into the liquid replenishing tank 22, and the coolant will be transported to the heat exchange channel of the heat dissipation cabinet 30 through the drainage branch 40. After the heat exchange operation of the heat exchange part, the high-temperature coolant is converted into a low-temperature coolant, and then flows back to the liquid cooling tank 21 through the liquid replenishing pipeline 60. In this cycle, the high-temperature coolant continuously flows into the heat exchange channel of the heat dissipation cabinet 30, and after the heat exchange operation of the heat exchange part, the high-temperature coolant is converted into a low-temperature coolant, and then flows back to the liquid cooling tank 21 through the liquid replenishing pipeline 60, ensuring that the temperature of the coolant in the liquid cooling tank 21 can be kept as much as possible within the range that effectively dissipates heat for the node chassis.

[0036] Of course, after one of the multiple node chassis is extracted and leaves the liquid cooling tank 21, the liquid level of the coolant in the liquid cooling tank 21 drops. At this time, the liquid level of the coolant in the liquid replenishing tank 22 is higher than the liquid level of the coolant in the liquid cooling tank 21. Since the liquid replenishing pipeline 60 continuously replenishes the liquid into the liquid cooling tank 21, the liquid level of the coolant in the liquid cooling tank 21 slowly recovers and rises, at least ensuring that the node chassis located at the highest position among the remaining node chassis in the liquid cooling tank 21 can still be immersed in the coolant, thereby ensuring the heat dissipation and cooling reliability of the remaining node chassis.

[0037] In addition, by providing an electromagnetic valve 50 on each drainage branch 40 that is at least used to connect the liquid replenishment tank 22 and the heat exchange flow channel, each drainage branch 40 can be independently controlled to ensure that when one of the multiple drainage branches 40 is disconnected for maintenance, the electromagnetic valve 50 on the drainage branch 40 can be individually controlled to be disconnected, and the remaining drainage branches 40 can operate normally, ensuring that the immersion liquid cooling system provided in the present application can always be in an operating state to effectively dissipate heat for multiple node chassis at all times.

[0038] It should be noted that, in a specific embodiment of the present application, there are two liquid 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 to the two liquid replenishment tanks 22, so that the present application can realize a dual water channel design and support independent control of the two drainage branches 40.

[0039] Optionally, the heat exchange part is a fan that blows air to remove the heat in the heat exchange channel, or the heat exchange part is cold water that exchanges heat with high-temperature coolant in the heat exchange channel to cool down.

[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 larger than the volume of a single liquid replenishing tank 22, and the notch of the liquid cooling tank 21 is connected to the notch of the liquid replenishing tank 22 through the overflow notch 70; the volumes of the liquid replenishing tanks 22 connected to the liquid cooling tank 21 are equal, the number of node chassis is N, and the volume V1 of N-1 node chassis and the sum of the volumes V2 of the liquid replenishing tanks 22 connected to the liquid cooling tank 21 satisfy: V2>V1. In this way, even if the chassis needs to be pulled out to only one node, it is still ensured that this node chassis can continue to operate and dissipate heat. In the case of actual samples, the volume of the left and right liquid replenishing tanks 22 will be designed according to the space size of the accommodating cavity 11 of the entire liquid tank cabinet 10 and the number of nodes that can be maintained at the same time, but at least the volume of the coolant that can be accommodated must be greater than the volume of one node chassis, so that at least a single node chassis can be maintained without stopping.

[0041] like Figures 3 to 7 As shown, the liquid replenishing port 211 is located at the bottom side wall of the liquid cooling tank 21; and / or, the liquid draining port 221 is located at the bottom side wall of the liquid replenishing tank 22. In this way, by setting the liquid replenishing port 211 to be located at the bottom side wall of the liquid cooling tank 21, and / or, the liquid draining port 221 is located at the bottom side wall of the liquid replenishing tank 22, the low-temperature coolant after the heat exchange operation enters the liquid cooling tank 21 from the bottom liquid replenishing port 211 and flows through the node chassis to absorb heat and then overflows into the liquid replenishing tank 22 on the side, and the high-temperature coolant flows from the liquid draining port 221 at the bottom of the liquid replenishing tank 22 through the liquid draining branch 40 into the heat exchange flow channel of the heat dissipation cabinet 30, and performs heat exchange operation through the heat exchange part, so that the low-temperature coolant continues to flow into the liquid cooling tank 21 to effectively dissipate heat for the node chassis therein.

[0042] like Figure 4 As shown, the accommodating chamber 11 includes a first accommodating space and a second accommodating space 111 that are connected, and the second accommodating space 111 is located on at least a portion of the outer peripheral side of the first accommodating space, and two avoidance holes are opened on the wall surface of the accommodating chamber 11; the immersion structure 20 is located in the first accommodating space; the first end of each drainage branch 40 is connected to the corresponding drainage port 221; the immersion liquid cooling system also includes a drainage trunk 80, and the second end of each drainage branch 40 is connected to the first end of the drainage trunk 80, and the second end of the drainage trunk 80 passes through the first avoidance hole setting; the first end of the liquid replenishment pipeline 60 passes through the second avoidance hole setting. In this way, by configuring the accommodating cavity 11 to include a first accommodating space and a second accommodating space 111 that are connected, the space in the accommodating cavity 11 is fully utilized, so that each drainage branch 40 is installed in the second accommodating space 111 through a support frame, and the vertical space of the second accommodating space 111 is fully utilized, ensuring that the overall volume of the accommodating cavity 11 of the liquid tank cabinet 10 will not cause the overall external volume of the liquid tank cabinet 10 to be too large due to the arrangement of each drainage branch 40.

[0043] It should be noted that, in the present application, the first avoidance hole mentioned above may be the liquid outlet 3000 of the liquid tank cabinet, and the second avoidance hole may be the liquid inlet 4000 of the liquid tank cabinet.

[0044] like Figure 1 and Figure 4 As shown, the immersion liquid cooling system further includes at least two pump structures 90, and each of the drainage branches 40 used to connect the liquid replenishing tank 22 and the heat exchange flow channel is provided with a pump structure 90, and each pump structure 90 is located downstream of the solenoid valve 50 on the corresponding drainage branch 40. In this way, the arrangement of the pump structure 90 plays a role in providing power for the circulation of the coolant in each drainage branch 40.

[0045] like Figure 1 As shown, in the direction from the discharge port 221 of the liquid replenishing tank 22 to the liquid inlet of the heat exchange flow channel, 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 are sequentially arranged on each discharge branch 40; the immersion liquid cooling system also includes a control module 500, which is connected to the first hydraulic sensor 100 signal, and / or the control module 500 is connected to the first liquid temperature sensor 200 signal; the control module 500 is control-connected to the solenoid valve 50, and the control module 500 adjusts the opening size of the solenoid valve 50 according to the hydraulic signal of the discharge branch 40 obtained by the first hydraulic sensor 100; and / or the control module 500 is control-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 discharge branch 40 obtained by the first liquid temperature sensor 200. The immersion liquid cooling system further includes a touch panel 700 , which is disposed on the outer surface of the 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 locating the solenoid valve 50 and the first check valve 400 provided on the drainage branch 40 at the head and the tail respectively, when any structural component on the above-mentioned drainage branch 40 needs to be replaced, the operator can close the solenoid valve 50 on the drainage branch 40 to be maintained by operating the touch panel 700, so that the pipeline between the solenoid valve 50 and the first check valve 400 of the drainage branch 40 is formed in a closed state, which is convenient for the subsequent maintenance or replacement of the various structural components on the drainage branch 40. In addition, the present application has two liquid replenishment tanks 22 and two drainage branches 40. When one drainage branch 40 is disconnected for maintenance, the other drainage branch 40 can still remain in operation, thereby achieving the purpose of maintaining components without shutting down.

[0046] It should be noted that, in the present application, the filter 300 is detachably connected to the drainage branch 40. In this way, the filter 300 can be easily disassembled and cleaned, thereby maintaining the cleanliness of the entire drainage branch 40.

[0047] like Figures 5 to 7 As shown, Figure 5 The schematic diagram of the structure of the state in which the coolant in the liquid cooling tank 21 overflows into the liquid replenishing tank 22 is shown. Figure 6 The schematic diagram of the structure of the state in which the liquid level of the liquid cooling tank is lowered due to lifting the node chassis is shown. Figure 7 The schematic diagram shows the state in which the coolant in the liquid replenishing tank 22 replenishes the coolant into the liquid cooling tank 21 through the liquid replenishing pipeline 60, and the liquid level of the coolant in the liquid cooling tank 21 rises. Figure 5 The horizontal line A in the figure indicates that the coolant in the liquid cooling tank 21 is flush with the coolant in the liquid replenishing tank 22. Figure 6 The horizontal dotted line B in FIG. 1 represents the position where the liquid level of the coolant in the liquid cooling tank 21 drops after a certain node chassis is lifted out of the liquid cooling tank 21. Figure 6 The horizontal dotted line C in the figure represents the liquid level of the coolant in the liquid replenishing tank 22. Figure 7 The horizontal line D in FIG. 2 represents the liquid level of the coolant in the liquid cooling tank 21 after the liquid is replenished. Figure 7 The horizontal line E in FIG. 2 represents the liquid level of the coolant in the liquid replenishing tank 22 after the liquid is drained.

[0048] Specifically, Figure 5 In the example, when the liquid cooling tank 21 is installed in the node chassis and operates normally, the liquid level of the coolant will be higher than the partition between the liquid cooling tank 21 and the liquid replenishing tank 22, so that the coolant will cross the left and right partitions and enter the two liquid replenishing tanks 22 on both sides. At this time, if the node chassis is maintained, the moment the node chassis is pulled up, such as Figure 6 As shown, the liquid level of the liquid cooling tank 21 will drop, and the liquid level of the liquid replenishing tank 22 is isolated by the partition. At the moment when the node chassis is pulled up, the liquid level of the coolant in the liquid replenishing tank 22 is higher than the liquid level of the coolant in the liquid cooling tank 21; Figure 7As shown, after a period of time after the node chassis is pulled up, the liquid in the replenishing tank 22 will circulate into the liquid cooling tank 21, and the liquid level of the liquid cooling tank 21 will first be replenished to the top height of the partition and then overflow to the replenishing tank 22, while the liquid level of the replenishing tank 22 will drop, which means that the original liquid vacancy in the liquid cooling tank 21 will be filled with the coolant in the replenishing tank 22. In this way, even if the cooling liquid is reduced due to node chassis maintenance or other reasons, the large-capacity designed replenishing tank 22 plays a key replenishing function, which can prioritize ensuring that the nodes in the liquid cooling tank 21 still obtain sufficient coolant for heat dissipation. A liquid level sensor 600 needs to be installed in the replenishing tank 22. When the liquid is reduced too much and affects the liquid outlet, an alarm will be issued on the touch panel 700 on the front of the tank cabinet 10 to remind the user to replenish the coolant.

[0049] Specifically, the immersion liquid cooling system further includes at least two liquid level sensors 600 and a prompt module, wherein at least each liquid replenishing tank 22 connected to the liquid cooling tank 21 is provided with a liquid level sensor 600, and the liquid level sensor 600 is connected to the control module 500 by signal; the prompt module is arranged on the outer surface of the liquid tank cabinet 10, and the prompt module is electrically connected to the control module 500, so as to issue a prompt liquid replenishment indication according to the liquid level signal obtained by the liquid level sensor 600. The immersion liquid cooling system further includes a touch panel 700, which is arranged on the outer surface of the liquid tank cabinet 10, and the touch panel 700 is electrically connected to the control module 500, and the control module 500 is controlled by the touch panel 700 to close and open the solenoid valve 50, and the prompt module is integrated at the touch panel 700.

[0050] Furthermore, if Figure 1 and Figure 2 As shown, the immersion liquid cooling system also includes a touch panel 700, which is arranged on the outer surface of the liquid tank cabinet 10, and the touch panel 700 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, and the prompt module is integrated in the touch panel 700.

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

[0052] like Figures 2 to 4 As shown, the tank cabinet 10 includes a cabinet body 12 and an upper cover 13. The upper cover 13 is disposed at the opening of the accommodating cavity 11, and the opening of the accommodating cavity 11 is disposed upward.

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

[0054] It should be noted that in the present application, the liquid cooling tank 21 must ensure that the internal node chassis can maintain a strong heat dissipation capability at all times. The continuously flowing liquid conducts heat energy and has a large specific heat capacity, which can ensure that the chip will not experience overheating failures when operating at high frequencies within a certain range. Therefore, dual-circuit liquid pump redundancy is an important function to ensure the operation of the entire liquid cooling tank. The additional configuration of the high-capacity liquid replenishment tank 22 can achieve the goal of maintaining the liquid level of the liquid cooling tank 21 when the node chassis is removed for maintenance, thereby ensuring that the heat dissipation of the remaining node chassis is not affected. By introducing liquid pump redundancy and a high-capacity liquid replenishment tank 22, the immersion liquid cooling system can greatly reduce the time that the node chassis is affected by overheating due to failures or maintenance, thereby ensuring that the liquid cooling tank 21 can continue to operate without stopping.

[0055] The present invention proposes an immersion liquid cooling system, in which the space for accommodating coolant in the replenishing tank 22 next to the liquid cooling tank 21 is enlarged. The replenishing tank 22 originally receives the coolant overflowing from the liquid cooling tank 21. In order to avoid sucking in air and discharging the liquid from the bottom pipeline, after the accommodating space is enlarged, in addition to the original function, when the liquid level of the liquid cooling tank 21 drops due to liquid loss or when the node is taken out for maintenance, the excess coolant in the replenishing tank 22 can be replenished into the liquid cooling tank 21 in time to ensure that the liquid level of the liquid cooling tank 21 remains unchanged. Various sensing and monitoring components and independent liquid pumps are respectively installed on the pipelines of the left and right replenishing tanks 22 to achieve redundant functions. When the liquid pump needs to be replaced and repaired, the solenoid valve on the pipeline can be closed to block the removal of the liquid pump on the single-side pipeline. The dual independent pipelines and dual independent liquid pumps can ensure the continuous operation of the liquid cooling tank.

[0056] The technical solution of the present invention is applied to provide an immersion liquid cooling system, including a liquid tank cabinet 10, an immersion structure 20, a heat dissipation cabinet 30, at least two drainage branches 40, at least two solenoid valves 50 and a liquid replenishment pipeline 60, wherein the liquid tank cabinet 10 has a receiving cavity 11; the immersion structure 20 is arranged in the receiving cavity 11, the immersion structure 20 has a liquid cooling tank 21 and a plurality of liquid replenishment tanks 22, at least two of the plurality of liquid 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, and the liquid replenishment tank 22 is used to temporarily store liquid cooled by the liquid cooling tank 21. The cooling liquid overflows from the tank 21; the heat dissipation cabinet 30 has a heat exchange part and a heat exchange channel for exchanging heat with the heat exchange part; at least the drain ports 221 of each replenishing tank 22 connected to the liquid cooling tank 21 are connected to the liquid inlet of the heat exchange channel through the corresponding drain branches 40; at least each drain branch 40 used to connect the replenishing tank 22 and the heat exchange channel is provided with a solenoid valve 50 to independently control each drain branch 40; the first end of the replenishing pipeline 60 is connected to the liquid outlet of the heat exchange channel, and the second end of the replenishing pipeline 60 is connected to the replenishing port 211 of the liquid cooling tank 21.

[0057] By connecting at least two of the multiple liquid replenishing tanks 22 with the liquid cooling tank 21, after placing multiple node chassis in the liquid cooling tank 21, the coolant in the liquid cooling tank 21 will overflow into the liquid replenishing tank 22, and the coolant will be transported to the heat exchange channel of the heat dissipation cabinet 30 through the drainage branch 40. After the heat exchange operation of the heat exchange part, the high-temperature coolant is converted into a low-temperature coolant, and then flows back to the liquid cooling tank 21 through the liquid replenishing pipeline 60. In this cycle, the high-temperature coolant continuously flows into the heat exchange channel of the heat dissipation cabinet 30, and after the heat exchange operation of the heat exchange part, the high-temperature coolant is converted into a low-temperature coolant, and then flows back to the liquid cooling tank 21 through the liquid replenishing pipeline 60, ensuring that the temperature of the coolant in the liquid cooling tank 21 can be kept as much as possible within the range that effectively dissipates heat for the node chassis.

[0058] Of course, after one of the multiple node chassis is extracted and leaves the liquid cooling tank 21, the liquid level of the coolant in the liquid cooling tank 21 drops. At this time, the liquid level of the coolant in the liquid replenishing tank 22 is higher than the liquid level of the coolant in the liquid cooling tank 21. Since the liquid replenishing pipeline 60 continuously replenishes the liquid into the liquid cooling tank 21, the liquid level of the coolant in the liquid cooling tank 21 slowly recovers and rises, at least ensuring that the node chassis located at the highest position among the remaining node chassis in the liquid cooling tank 21 can still be immersed in the coolant, thereby ensuring the heat dissipation and cooling reliability of the remaining node chassis.

[0059] In addition, by providing an electromagnetic valve 50 on each drainage branch 40 that is at least used to connect the liquid replenishment tank 22 and the heat exchange flow channel, each drainage branch 40 can be independently controlled to ensure that when one of the multiple drainage branches 40 is disconnected for maintenance, the electromagnetic valve 50 on the drainage branch 40 can be individually controlled to be disconnected, and the remaining drainage branches 40 can operate normally, ensuring that the immersion liquid cooling system provided in the present application can always be in an operating state to effectively dissipate heat for multiple node chassis at all times.

[0060] Beneficial effects brought by the technical solution of the present invention:

[0061] The immersion liquid cooling solution of the present application can greatly improve the maintainability and reliability of the liquid tank cabinet 10. The dual-water circuit liquid pump redundancy can replace damaged liquid pumps or sensors more quickly, especially when the filter needs to be cleaned at regular intervals, there is no need to shut down the entire cabinet to affect business. When the liquid level in the main liquid tank of the high-capacity replenishment tank 22 drops due to liquid leakage or when the node is removed for maintenance, the coolant in the replenishment tank 22 can be replenished into the main liquid tank in time to ensure that the liquid level height of the main liquid tank remains unchanged, avoiding affecting the heat dissipation of the immersed 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, the present invention can be used for all immersion tank cabinets, and has a wide range of applications;

[0063] Value of problem solving: Very high, the present invention can greatly improve the maintainability and reliability of the tank;

[0064] Cost saving: high, the present invention reduces the difficulty of tank operation and maintenance and the operating cost;

[0065] Advancedness: High. Although the embodiment of this proposal is a prior art, there is no existing solution to achieve this effect. In comparison, the concept of this proposal itself is advanced.

[0066] Innovation: High. The dual-waterway dual-liquid pump design proposed in this invention has no similar design in other competing products. The combination of solenoid valve and check valve can achieve rapid replacement of parts. Compared with existing solutions, it is an innovative design.

[0067] Feasibility: Very high. The feasibility of the embodiments is 100%, and they are all mass-producible designs.

[0068] What are the key technical points and protection points of this application?

[0069] The liquid tank cabinet 10 of the present application supports a dual-waterway liquid pump redundant structure, which enables the liquid tank to be maintained without shutting down the entire liquid tank cabinet and internal nodes when problems occur with components such as the liquid pump and need to be replaced, thereby increasing the maintainability and reliability of the system.

[0070] The liquid tank cabinet 10 of the present application supports the refilling function of the high-capacity refilling tank 22. Compared with the liquid tank of the existing solution, it can continuously maintain the heat dissipation capacity of the immersed node, will not cause overheating due to the reduction of cooling liquid, reduce the risk of shutdown, and increase the reliability of the system.

[0071] The immersion liquid cooling solution of the present application integrates innovative design and high reliability, covering an innovative immersion liquid cooling cabinet and its supporting liquid cooling server heat dissipation solution. It is the first to introduce two innovative solutions for the function of continuous operation of the immersion liquid tank and non-stop maintenance of the equipment. The design concept is superior to other current patents or products. Through the support of dual water circuit liquid pump redundancy and high-capacity liquid replenishment tank 22 replenishment function, the maintainability and reliability of the liquid tank can be greatly improved. It can be said that the present invention provides a solution to make up for the weaknesses of the current existing patents. In general, the present invention can be said to have better utilization value than other related inventions, and patents are needed to provide relevant protection.

[0072] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0073] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

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

[0075] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

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

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An immersion liquid cooling system, characterized in that: include: A liquid tank cabinet (10), wherein the liquid tank cabinet (10) has a receiving cavity (11); An immersion structure (20), the immersion structure (20) being arranged in the accommodating cavity (11), the immersion structure (20) comprising a liquid cooling tank (21) and a plurality of liquid replenishing tanks (22), at least two of the plurality of liquid replenishing tanks (22) being connected to the liquid cooling tank (21), the liquid cooling tank (21) being used to store a plurality of node chassis, and the liquid replenishing tank (22) being used to temporarily store cooling liquid overflowing from the liquid cooling tank (21); A heat dissipation cabinet (30), the heat dissipation cabinet (30) comprising a heat exchange portion and a heat exchange flow channel for exchanging heat with the heat exchange portion; At least two liquid discharge branches (40), at least the liquid discharge ports (221) of each of the liquid replenishing tanks (22) that are connected to the liquid cooling tank (21) are connected to the liquid inlet of the heat exchange flow channel through the corresponding liquid discharge branches (40); at least two solenoid valves (50), each of the liquid discharge branches (40) at least used to connect the liquid replenishing tank (22) and the heat exchange flow channel is provided with the solenoid valve (50) so as to independently control each of the liquid discharge branches (40); A liquid replenishing pipeline (60), wherein a first end of the liquid replenishing pipeline (60) is connected to a liquid outlet of the heat exchange flow channel, and a second end of the liquid replenishing pipeline (60) is connected to a liquid replenishing port (211) of the liquid cooling tank (21).

2. The immersion liquid cooling system according to claim 1, characterized in that: The volume of the liquid cooling groove (21) is greater than the volume of a single liquid replenishing groove (22), and the notch of the liquid cooling groove (21) is connected with the notch of the liquid replenishing groove (22) via an overflow notch (70); The volumes of the liquid replenishing tanks (22) connected to the liquid cooling tank (21) are all equal, the number of the node chassis is N, and the volume V1 of N-1 node chassis and the sum V2 of the volumes of the liquid replenishing tanks (22) connected to the liquid cooling tank (21) satisfy: V2>V1.

3. The immersion liquid cooling system according to claim 1, characterized in that: The liquid replenishing port (211) is located at the bottom side wall surface of the liquid cooling tank (21); and / or, The liquid discharge port (221) is located at the bottom side wall surface of the liquid replenishment tank (22).

4. The immersion liquid cooling system according to claim 1, characterized in that: The accommodating cavity (11) comprises a first accommodating space and a second accommodating space (111) which are connected, and the second accommodating space (111) is located at least partially on the outer periphery of the first accommodating space, and two avoidance holes are provided on the cavity wall surface of the accommodating cavity (11); The immersion structure (20) is located in the first accommodating space; The first end of each of the drainage branches (40) is in communication with the corresponding drainage ports (221); The immersion liquid cooling system also includes: A drainage main path (80), wherein the second end of each drainage branch path (40) is connected to the first end of the drainage main path (80), and the second end of the drainage main path (80) passes through the first avoidance hole; The first end of the liquid replenishing pipeline (60) passes through the second avoidance hole.

5. 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) at least for connecting the liquid replenishing tank (22) and the heat exchange flow channel, and each of the pump body structures (90) is located downstream of the solenoid valve (50) on the corresponding drainage branch (40).

6. The immersion liquid cooling system according to any one of claims 1 to 5, characterized in that: In the direction from the liquid discharge port (221) of the liquid replenishing tank (22) to the liquid inlet port of the heat exchange flow channel, each of the liquid discharge branches (40) is sequentially provided with the solenoid valve (50), the first hydraulic pressure 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), the control module (500) being signal-connected to the first hydraulic pressure sensor (100), and / or the control module (500) being signal-connected to the first liquid temperature sensor (200); The control module (500) is controllably connected to the solenoid valve (50), and the control module (500) adjusts the opening size of the solenoid valve (50) according to the hydraulic signal of the drainage branch (40) acquired by the first hydraulic sensor (100); and / or, The control module (500) is control-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 drainage branch (40) acquired by the first liquid temperature sensor (200).

7. The immersion liquid cooling system according to claim 6, characterized in that: The filter (300) is detachably connected to the drainage branch (40).

8. The immersion liquid cooling system according to claim 6, characterized in that: The immersion liquid cooling system also includes: at least two liquid level sensors (600), each of the liquid replenishing tanks (22) at least connected to the liquid cooling tank (21) being provided with the liquid level sensor (600), and the liquid level sensor (600) being connected to the control module (500) by signal; A prompt module is arranged on the outer surface of the liquid tank cabinet (10), and the prompt module is electrically connected to the control module (500) to issue a prompt for liquid replenishment according to the liquid level signal obtained by the liquid level sensor (600).

9. The immersion liquid cooling system according to claim 8, characterized in that: The immersion liquid cooling system also includes: A touch panel (700), wherein the touch panel (700) is arranged on the outer surface of the liquid tank cabinet (10), and the touch panel (700) is electrically connected to the control module (500), and the control module (500) is controlled by the touch panel (700) to close and open the solenoid valve (50), and the prompt module is integrated in the touch panel (700).

10. The immersion liquid cooling system according to any one of claims 1 to 5, characterized in that: In the direction from the liquid outlet of the heat exchange channel to the liquid replenishment port (211) of the liquid cooling tank (21), a second check valve (800), a flow meter (900), a second hydraulic pressure sensor (1000) and / or a second liquid temperature sensor (2000) are sequentially arranged on the liquid replenishment pipeline (60).

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