Immersed liquid cooling device and system

Abstract

The utility model relates to the technical field of heat dissipation of electronic equipment, in particular to an immersed liquid cooling device and system, a circulation module in the immersed liquid cooling device is connected with a first opening and a second opening on an immersed box body to form a circulation channel of cooling liquid, and the temperature of the cooling liquid at the upper end of the immersed box body is higher after a load is heated, so that the cooling liquid can be cooled. The circulating module pumps out the upper cooling liquid with higher temperature from the first opening and then sends back to immerse the lower part of the box body from the second opening, so that the cooling liquid can continuously and circularly flow around the load, the long-time accumulation of the upper high-temperature cooling liquid is avoided, the uniform distribution of heat is promoted, and the temperature difference of the cooling liquid at the upper end and the lower end of the load is reduced; the condition that the temperatures of the cooling liquid at the upper end and the lower end of the load are inconsistent is effectively improved, the load is located in the cooling liquid environment with the relative uniform temperature, performance consistency of all parts of the load can be kept, the performance reduction or fault risk caused by temperature difference is reduced, and the load can better exert the extreme performance.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation technology for electronic devices, and in particular to an immersion liquid cooling device and system. Background Technology

[0002] The core of artificial intelligence technology lies in large-scale data processing and complex algorithm calculations, leading to a surge in the computational load and a significant increase in power consumption of information technology (IT) devices. For example, NVIDIA's latest B200 graphics processing unit (GPU) chip has a power consumption of 1000W. This high power density presents a heat dissipation challenge, as excessively high temperatures can severely affect the performance and stability of IT devices, and may even cause hardware damage.

[0003] Currently, data centers typically use immersion cooling systems to dissipate heat from the load. However, a significant issue with existing immersion cooling technologies is the uneven temperature distribution of the coolant caused by load heat. Due to the upward conduction of heat, the coolant between the surface and the top of the load absorbs more heat dissipated from the load, resulting in a noticeable temperature increase. Conversely, the coolant between the bottom and the bottom of the load receives relatively less heat and remains at a lower temperature. This temperature difference between the upper and lower parts of the load causes different parts of the load to operate under varying thermal environments. This uneven temperature distribution leads to performance fluctuations, ultimately affecting the overall stability and reliability of the equipment.

[0004] Therefore, overcoming the shortcomings of the existing technology is an urgent problem to be solved in this technical field. Utility Model Content

[0005] The technical problem to be solved by this invention is how to make the upper and lower ends of the load work in a coolant environment with a small temperature difference.

[0006] The present invention adopts the following technical solution:

[0007] In a first aspect, an immersion liquid cooling device is provided, comprising: an immersion chamber 1 and a circulation module 2; the immersion chamber 1 is filled with coolant, and a load is disposed below the surface of the coolant in the immersion chamber 1; a first opening 10 and a second opening 11 are provided on the side of the immersion chamber 1; the first opening 10 is at a first preset distance from the bottom surface of the chamber, and the second opening 11 is at a second preset distance from the bottom surface of the chamber, wherein the first preset distance is greater than the second preset distance; the input end of the circulation module 2 is connected to the first opening 10, and the output end of the circulation module 2 is connected to the second opening 11; the circulation module 2 is used to circulate the coolant at the upper end of the load to the lower end of the load.

[0008] Preferably, the circulation module 2 includes a first water pump 20 and a first ball valve 21; the input end of the first water pump 20 is connected to the first opening 10, the output end of the first water pump 20 is connected to one end of the first ball valve 21, and the other end of the first ball valve 21 is connected to the second opening 11.

[0009] Preferably, the load is disposed between the first opening 10 and the second opening 11.

[0010] Preferably, a condenser 3 is provided above the surface of the coolant in the immersion tank 1.

[0011] Preferably, the immersion liquid cooling device further includes an external water module 4, which includes a first water tank 40, a second water tank 41, a second water pump 42, and a second ball valve 43.

[0012] One end of the second water pump 42 is connected to the first water tank 40, and the other end of the second water pump 42 is connected to one end of the second ball valve 43. The other end of the second ball valve 43 is connected to one end of the pipe flowing through the condenser 3, and the other end of the pipe flowing through the condenser 3 is connected to the second water tank 41.

[0013] Preferably, a first temperature sensor 44 is provided on the pipeline between the other end of the second ball valve 43 and one end of the pipe flowing through the condenser 3; and a second temperature sensor 45 is provided on the pipeline between the other end of the pipe flowing through the condenser 3 and the second water tank 41.

[0014] Preferably, a pressure sensor 12 and an exhaust valve 13 are also provided above the surface of the coolant on the immersion tank 1.

[0015] Preferably, the immersion liquid cooling device further includes a first thermocouple 5, a second thermocouple 6, and a third thermocouple 7; the first thermocouple 5 is disposed above the surface of the coolant in the immersion tank 1, the second thermocouple 6 is disposed between the surface of the coolant in the immersion tank 1 and the upper end of the load, and the third thermocouple 7 is disposed between the lower end of the load and the bottom surface of the coolant.

[0016] Preferably, a closed sight glass 14 is provided on the immersion tank 1.

[0017] In a second aspect, an immersion liquid cooling system is provided, including a load and an immersion liquid cooling device as described in the first aspect, wherein the load is disposed below the liquid level of the coolant in the immersion tank 1.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] In this invention, the circulation module 2 is connected to the first opening 10 and the second opening 11 on the immersion tank 1, forming a coolant circulation channel. As the coolant temperature at the upper end of the load is high after the load heats up, the circulation module 2 draws the higher-temperature upper coolant out of the first opening 10 and sends it back to the lower part of the immersion tank 1 through the second opening 11. This allows the coolant to circulate continuously around the load, preventing the high-temperature coolant at the upper end from accumulating for a long time, promoting uniform heat distribution, and reducing the temperature difference between the upper and lower ends of the load. This effectively improves the situation of inconsistent coolant temperatures at the upper and lower ends of the load, placing the load in a relatively uniform coolant environment. This helps maintain the consistency of performance of each part of the load, reduces the risk of performance degradation or failure due to temperature differences, and allows the load to better perform at its peak. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of an immersion liquid cooling device provided in an embodiment of the present invention;

[0022] Figure 2 This is another structural schematic diagram of an immersion liquid cooling device provided in an embodiment of the present utility model;

[0023] Figure 3 This is a more specific structural schematic diagram of an immersion liquid cooling device provided in an embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of the structure of an immersion liquid cooling system provided in an embodiment of the present invention.

[0025] In all the accompanying drawings, the same reference numerals denote the same structure, wherein:

[0026] Immersion tank 1, first opening 10, second opening 11, pressure sensor 12, exhaust valve 13, sight glass 14, circulation module 2, first water pump 20, first ball valve 21, condenser 3, external water module 4, first water tank 40, second water tank 41, second water pump 42, second ball valve 43, first temperature sensor 44, second temperature sensor 45, first thermocouple 5, second thermocouple 6, third thermocouple 7. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0028] Unless the context otherwise requires, throughout the specification and claims, the term "comprising" is interpreted as openly inclusive, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples" are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples; that is, although they may be incorporated into embodiments or examples using the above terms for reasons such as order and position, it does not limit them to be incorporated in combination by a single embodiment or example.

[0029] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more. Furthermore, for example, the description may use the prefix "A" or "B" to describe the same type of nouns as two independent entities. In this case, the features defined with "A" and "B" are used only to distinguish between similar entities and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features.

[0030] In describing some embodiments, the terms "coupled," "coupled," and "connected," and their derivative expressions, may be used. For example, the term "connected" may be used in describing some embodiments to indicate that two or more components have direct physical or electrical contact with each other. Similarly, the term "coupled" may be used in describing some embodiments to indicate that two or more components have direct physical or electrical contact. However, the terms "connected" or "coupled" may also refer to two or more components that do not have direct contact with each other but still cooperate or interact with each other, such as "optical coupling" or "wireless connection." The embodiments disclosed herein are not necessarily limited to the scope of this invention.

[0031] Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0032] Example 1:

[0033] To address the problems of existing technologies, this embodiment provides an immersion liquid cooling device, such as... Figure 1 As shown, it includes: an immersion tank 1 and a circulation module 2; the immersion tank 1 is filled with coolant, and the load is positioned below the surface of the coolant in the immersion tank 1; the side of the immersion tank 1 is provided with a first opening 10 and a second opening 11; the first opening 10 is a first preset distance from the bottom surface of the tank, and the second opening 11 is a second preset distance from the bottom surface of the tank, the first preset distance being greater than the second preset distance; the input end of the circulation module 2 is connected to the first opening 10, and the output end of the circulation module 2 is connected to the second opening 11; the circulation module 2 is used to circulate the coolant from the upper end of the load to the lower end of the load.

[0034] The immersion tank 1 is a relatively enclosed structure, and all connections between the immersion tank 1 and other structures are equipped with sealing structures to effectively prevent coolant leakage and interference from external impurities, ensuring the stability of coolant performance. The load is completely submerged below the coolant surface, guaranteeing comprehensive and direct thermal contact and rapidly transferring the heat generated by the load to the coolant.

[0035] In one embodiment, the coolant is a non-conductive substance with high heat transfer efficiency. To allow the coolant at the top of the load to circulate through the first opening 10 to the second opening 11 for heat exchange between the coolant at the top and bottom of the load, the load is positioned between the first opening 10 and the second opening 11.

[0036] In one embodiment, refer to Figure 1 A closed sight glass 14 is provided on the immersion tank 1, through which the level of coolant in the immersion tank 1 can be observed in real time. A coolant replenishment port (not shown in the figure) is also provided on the immersion tank 1. When the level of coolant observed through the sight glass 14 is lower than the height of the first opening, coolant needs to be replenished through the replenishment port. In one embodiment, a scale line matching the first opening 10 can be provided on the sight glass 14. When the level of coolant in the immersion tank 1 is observed to be lower than this scale line, coolant needs to be replenished through the replenishment port. More specific details are not described in this embodiment.

[0037] The circulation module 2 is the core component of the entire liquid cooling device. Through its input terminal connected to the first opening 10, it draws high-temperature coolant from the top of the load. The coolant at this location absorbs more heat due to its proximity to the top of the load, resulting in a relatively high temperature. It is then returned to the immersion tank 1 through the second opening 11. The high-temperature coolant enters from the bottom of the load, gradually balancing the temperature of the coolant at both ends, creating a more uniform and stable thermal environment for the load. This improves the load's performance and ensures its efficient and stable operation. In one embodiment, the determination of the first and second preset distances needs to be designed based on the volume of the load and its actual heat generation; this embodiment does not impose specific limitations.

[0038] In one embodiment, such as Figure 2 As shown, the circulation module 2 includes a first water pump 20 and a first ball valve 21; the input end of the first water pump 20 is connected to the first opening 10, the output end of the first water pump 20 is connected to one end of the first ball valve 21, and the other end of the first ball valve 21 is connected to the second opening 11.

[0039] The first water pump 20 is connected to the first opening 10 of the immersion tank 1. Through its operation, it generates suction to extract the coolant with a higher temperature at the upper end of the load in the immersion tank 1. This coolant is then circulated through corresponding pipelines to the second opening 11, thus circulating the relatively high-temperature coolant at the upper end of the load to the lower-temperature coolant at the lower end. The first ball valve 21 controls the direction and flow rate of the coolant. By opening and closing the ball valve, the flow of coolant into the immersion tank 1 can be flexibly controlled. During system startup, shutdown, or maintenance, closing the first ball valve 21 prevents coolant flow, facilitating operation. In one embodiment, the first ball valve 21 can also control the coolant flow rate by adjusting its opening degree. When the heat generated by the load changes, the opening degree of the ball valve can be adjusted according to actual needs, thereby regulating the coolant circulation volume for better cooling. For example, when the temperature difference between the coolant at the upper and lower ends of the load is large, the opening of the first ball valve 21 can be appropriately increased to increase the flow rate of the coolant and accelerate the heat exchange efficiency of the coolant at the upper and lower ends of the load, so that the temperature difference between the coolant at the upper and lower ends of the load meets the requirements; when the heat generated by the load is small, the opening of the first ball valve 21 can be reduced to decrease the flow rate of the coolant and save energy.

[0040] It is worth noting that the first ball valve 21 can also be located at any position on the pipeline between the first opening 10 and the second opening 11.

[0041] To improve the heat exchange efficiency of the coolant at both ends of the load, based on the principle of heat transfer in liquids, theoretically, the coolant temperature is highest at the center of the upper load. Therefore, the input end of the first water pump 20 is not only connected to the first opening 10, but also extends through a corresponding pipeline to the coolant at the center of the upper load to extract the coolant with the highest temperature at the upper load. Similarly, the other end of the first ball valve 21 is not only connected to the second opening 11, but also needs to extend through a pipeline to the coolant at the center of the lower load to circulate the coolant from the upper load to the center of the lower load for better heat exchange with the stable, lower-temperature coolant at the lower load. It is worth noting that the sealing of the immersion tank 1 must be ensured when setting up the pipeline.

[0042] In summary, during normal operation, the first water pump 20 operates continuously, and the first ball valve 21 maintains an appropriate opening, allowing the coolant to circulate along the designed path, continuously transferring the coolant with a higher temperature at the upper end of the load to the lower end of the load, thereby balancing the temperature of the coolant at both ends of the load and solving the problem of performance being affected by inconsistent temperatures at the upper and lower ends of the load in the prior art.

[0043] To achieve the phase change immersion liquid cooling effect, refer to Figure 2 A condenser 3 is provided above the surface of the coolant in the immersion tank 1.

[0044] In this process, the coolant in the submerged chamber 1 heats up during the absorption of heat from the load, causing it to evaporate. When the vapor rises and comes into contact with the low-temperature surface of the condenser 3, it liquefies upon contact with the cold surface and drips back into the coolant. This effectively reduces coolant evaporation loss, maintains a relatively stable coolant level, and eliminates the need for coolant replenishment if the submerged chamber 1 remains sealed. This ensures the long-term stable operation of the liquid cooling system, reduces maintenance costs, and prevents insufficient coolant from affecting the cooling effect.

[0045] In one embodiment, the condenser 3 may be provided with a phase change material so that when hot steam comes into contact with the condenser 3, the phase change material in the condenser 3 undergoes a phase change, thereby absorbing the heat of the hot steam and condensing the hot steam back into a liquid state and dripping it back into the liquid coolant.

[0046] The condenser 3 can also dissipate heat through an external structure, such as in one embodiment. Figure 3As shown, the immersion liquid cooling device also includes an external water module 4, which includes a first water tank 40, a second water tank 41, a second water pump 42, and a second ball valve 43. One end of the second water pump 42 is connected to the first water tank 40, and the other end of the second water pump 42 is connected to one end of the second ball valve 43. The other end of the second ball valve 43 is connected to one end of the pipe flowing through the condenser 3, and the other end of the pipe flowing through the condenser 3 is connected to the second water tank 41.

[0047] The second ball valve 43 can also be installed at any position on the pipeline between the first water tank 40 and one end of the pipeline flowing through the condenser 3.

[0048] In one embodiment, one end of the second water pump 42 is connected to the bottom of the first water tank 40 so that the second water pump 42 can transfer all the water in the first water tank 40 to the condenser 3 and flow to the second water tank 41.

[0049] The second water pump 42 draws water from the first water tank 40. Driven by the second water pump 42, the water gains pressure energy and begins to flow in the pipeline. In the first direction (from the first water tank 40 to the second water tank 41), the water passes through the second ball valve 43 and flows into the pipeline connected to the condenser 3. During its flow through the condenser 3, the water absorbs heat from the surface of the condenser 3, enabling the condenser 3 to continuously condense the hot steam generated by the evaporation of the coolant. Because water has a high specific heat capacity, it can absorb a large amount of heat, thereby effectively reducing the temperature of the condenser 3. The hot water, having absorbed heat, continues to flow and eventually flows into the second water tank 41 for natural cooling. This completes one external water circulation cycle, achieving the cooling of the condenser 3.

[0050] In one embodiment, the second water pump 42 is a bidirectional water pump. After all the water in the first water tank 40 flows into the second water tank 41, the conduction direction of the second water pump 42 is changed (i.e., the second direction) so that the water in the second water tank 41 flows through the condenser 3 and exchanges heat before flowing back to the first water tank 40. This completes the second external water circulation and achieves the cooling of the condenser 3.

[0051] To save energy and avoid the second water pump 42 from continuously operating at high power, in one embodiment, refer to Figure 3 A first temperature sensor 44 is installed on the pipeline between the other end of the second ball valve 43 and one end of the pipe flowing through the condenser 3; a second temperature sensor 45 is installed on the pipeline between the other end of the pipe flowing through the condenser 3 and the second water tank 41. In one embodiment, a flow meter 46 is also installed between the first water tank 40 and one end of the pipe flowing through the condenser 3, the flow meter 46 being used to monitor the flow rate in the pipeline.

[0052] The first temperature sensor 44 and the second temperature sensor 45 measure the water temperature at different locations. These two temperature values ​​allow for the acquisition of the temperature change of the water flowing through the condenser 3, which is then used to set the operating efficiency of the water pump. Specifically, this includes:

[0053] The first temperature sensor 44 measures the water temperature T1 before it enters the condenser 3, and the second temperature sensor 45 measures the water temperature T2 after it flows out of the condenser 3. The difference between the two is calculated as T = T2 - T1. The temperature difference T reflects the amount of heat absorbed by the water in the condenser 3.

[0054] If T is large, it indicates that there is a lot of heat exchange in condenser 3, requiring the second water pump 42 to operate at a higher efficiency to allow water to circulate faster in the system, thereby removing more heat and ensuring the cooling effect of condenser 3. If T is small, it indicates that there is less heat exchange in condenser 3, in which case the water pump efficiency can be appropriately reduced to decrease the water circulation speed and save energy. The water pump efficiency is automatically adjusted by comparing the value of T with a set threshold. For example, when T exceeds the upper threshold, the speed or frequency of the second water pump 42 is increased to improve its efficiency; when T is below the lower threshold, the speed or frequency of the second water pump 42 is reduced to decrease its efficiency. Through the aforementioned feedback mechanism, the system can dynamically adjust the efficiency of the second water pump 42 according to the actual heat exchange requirements, ensuring the cooling effect of condenser 3 while achieving rational energy utilization. It is worth noting that the above method is existing technology, and more specific details will not be described in this embodiment.

[0055] To ensure the safety of the device, in one embodiment, reference continues to be made to... Figure 3 A pressure sensor 12 and an exhaust valve 13 are also installed above the coolant level in the immersion tank 1. The pressure sensor 12 is used to obtain the pressure of the gas in the immersion tank 1. If the obtained pressure is greater than the safe value, the pressure can be released through the exhaust valve 13 to prevent the immersion tank 1 from becoming too high and exploding.

[0056] In one embodiment, refer to Figure 3 The immersion liquid cooling device further includes a first thermocouple 5, a second thermocouple 6, and a third thermocouple 7; the first thermocouple 5 is disposed above the surface of the coolant in the immersion tank 1, the second thermocouple 6 is disposed between the surface of the coolant in the immersion tank 1 and the upper end of the load, and the third thermocouple 7 is disposed between the lower end of the load and the bottom surface of the coolant.

[0057] The immersion chamber 1 is provided with corresponding openings to extend the temperature detection ends of the first thermocouple 5, the second thermocouple 6 and the third thermocouple 7 to their respective positions.

[0058] The first thermocouple 5 is primarily used to measure the temperature of the space at the top of the enclosure. This helps to understand the coolant evaporation and the overall thermal environment inside the enclosure. If the temperature at this location is too high, it may indicate excessive coolant evaporation or that the enclosure's heat dissipation performance needs improvement, requiring further inspection of the condenser 3's operating status or the enclosure's insulation performance.

[0059] The second thermocouple 6 is located between the coolant level in the immersion chamber 1 and the top of the load. Since the heat generated by the load will raise the temperature of the surrounding coolant, the second thermocouple 6 can monitor the temperature change of the coolant around the top of the load in real time. If this temperature is too high, it may cause a decrease in the performance of the top of the load or even a malfunction. In this case, it is necessary to check the coolant circulation or whether the heat dissipation design of the load is reasonable.

[0060] The third thermocouple 7 is used to measure the temperature of the coolant near the lower end of the load. By comparing the temperature measured by the second thermocouple 6, the temperature difference of the coolant at the upper and lower ends of the load can be directly understood. If the temperature difference is too large, it indicates that the cooling at the upper and lower ends of the load is uneven, which may be due to problems with the flow distribution of the coolant, such as poor coolant flow at the upper end of the load, leading to heat accumulation. This requires adjusting the parameters of the circulation module 2 or optimizing the internal structural design of the immersion tank 1 to ensure that the coolant can flow evenly and achieve good heat dissipation.

[0061] By working in concert with three thermocouples, the temperature distribution of the coolant and load in the immersion liquid cooling system can be fully assessed, allowing for the timely detection of potential temperature anomalies and ensuring the stable operation of the liquid cooling system and the performance of the load.

[0062] In this embodiment, the circulation module 2 is connected to the first opening 10 and the second opening 11 on the immersion tank 1 to form a coolant circulation channel. Since the coolant temperature at the upper end of the load is high after the load heats up, the circulation module 2 draws the higher-temperature upper coolant out of the first opening 10 and sends it back to the lower part of the immersion tank 1 through the second opening 11. This allows the coolant to circulate continuously around the load, preventing the high-temperature coolant at the upper end from accumulating for a long time, promoting uniform heat distribution, and reducing the temperature difference between the upper and lower ends of the load. This effectively improves the situation of inconsistent coolant temperatures at the upper and lower ends of the load, placing the load in a relatively uniform coolant environment. This helps maintain the consistency of performance of each part of the load, reduces the risk of performance degradation or failure due to temperature differences, and allows the load to better perform at its peak.

[0063] Example 2:

[0064] To further illustrate the immersion liquid cooling device in Example 1, this example proposes an immersion liquid cooling system, such as... Figure 4 As shown, it includes a load and an immersion liquid cooling device as described in Example 1, wherein the load is disposed below the liquid level of the coolant in the immersion tank 1.

[0065] In this embodiment, the circulation module 2 is connected to the first opening 10 and the second opening 11 on the immersion tank 1 to form a coolant circulation channel. Since the coolant temperature at the upper end of the load is high after the load heats up, the circulation module 2 draws the higher-temperature upper coolant out of the first opening 10 and sends it back to the lower part of the immersion tank 1 through the second opening 11. This allows the coolant to circulate continuously around the load, preventing the high-temperature coolant at the upper end from accumulating for a long time, promoting uniform heat distribution, and reducing the temperature difference between the upper and lower ends of the load. This effectively improves the situation of inconsistent coolant temperatures at the upper and lower ends of the load, placing the load in a relatively uniform coolant environment. This helps maintain the consistency of performance of each part of the load, reduces the risk of performance degradation or failure due to temperature differences, and allows the load to better perform at its peak.

[0066] For the specific structure of the immersion liquid cooling device, please refer to Embodiment 1, which will not be repeated in this embodiment.

[0067] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An immersion liquid cooling device, characterized by, The immersion tank (1) and the circulation module (2); the immersion tank (1) is provided with cooling liquid, the load is arranged below the liquid level of the cooling liquid in the immersion tank (1); the side of the immersion tank (1) is provided with a first opening (10) and a second opening (11); the first opening (10) is a first preset distance from the bottom surface of the tank, the second opening (11) is a second preset distance from the bottom surface of the tank, and the first preset distance is greater than the second preset distance; The input end of the circulation module (2) is connected with the first opening (10), and the output end of the circulation module (2) is connected with the second opening (11); The circulation module (2) is used for circulating the cooling liquid at the upper end of the load to the lower end of the load. The circulation module (2) comprises a first water pump (20) and a first ball valve (21); the input end of the first water pump (20) is connected with the first opening (10), the output end of the first water pump (20) is connected with one end of the first ball valve (21), and the other end of the first ball valve (21) is connected with the second opening (11).

2. The liquid submersion cooling device of claim 1, wherein, The load is arranged between the first opening (10) and the second opening (11).

3. The liquid submersion cooling device of claim 1, wherein, The immersion tank (1) is provided with a condenser (3) above the liquid level of the cooling liquid.

4. The liquid submersion cooling device of claim 1, wherein, The immersion liquid cooling device further comprises an external water module (4), the external water module (4) comprises a first water tank (40), a second water tank (41), a second water pump (42) and a second ball valve (43); 5. The liquid submersion cooling device of claim 4, wherein, One end of the second water pump (42) is connected with the first water tank (40), the other end of the second water pump (42) is connected with one end of the second ball valve (43), and the other end of the second ball valve (43) is connected with one end of the pipeline flowing through the condenser (3), and the other end of the pipeline flowing through the condenser (3) is connected with the second water tank (41). A first temperature sensor (44) is arranged on the pipeline between the other end of the second ball valve (43) and one end of the pipeline flowing through the condenser (3); a second temperature sensor (45) is arranged on the pipeline between the other end of the pipeline flowing through the condenser (3) and the second water tank (41).

6. The liquid submersion cooling device of claim 5, wherein, A pressure sensor (12) and an exhaust valve (13) are further arranged above the liquid level of the cooling liquid on the immersion tank (1).

7. The liquid submersion cooling device of claim 1, wherein, The immersion liquid cooling device further comprises a first thermocouple (5), a second thermocouple (6) and a third thermocouple (7); the first thermocouple (5) is arranged above the liquid level of the cooling liquid in the immersion tank (1), the second thermocouple (6) is arranged between the liquid level of the cooling liquid and the upper end of the load in the immersion tank (1), and the third thermocouple (7) is arranged between the lower end of the load and the bottom surface of the cooling liquid.

8. The liquid submersion cooling device of claim 1, wherein, A closed sight glass (14) is arranged on the immersion tank (1).

9. The liquid submersion cooling device of claim 1, wherein, The immersion liquid cooling device comprises a load and any one of claims 1-9, and the load is arranged below the liquid level of the cooling liquid in the immersion tank (1).

10. An immersion liquid cooling system, characterized by, ​

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