Immersed liquid cooling device

Abstract

The utility model discloses an immersion type liquid cooling device, relates to server liquid cooling technical field, the immersion type liquid cooling device comprises an immersion box body and a pipeline structure, the immersion box body is provided with an accommodation cavity with an open upper end, the accommodation cavity is divided into a plurality of cooling cavities arranged at intervals along the horizontal direction, and the pipeline structure is arranged in the accommodation cavity. Each cooling cavity is filled with cooling liquid and used for allowing hardware equipment to be placed in an immersed mode. The pipeline structure is used for being communicated with an external cold source, the pipeline structure is communicated with the multiple cooling cavities, and control valves are arranged at multiple correspondingly-formed connecting positions. According to the working condition information of each server, the state of each control valve is controlled, the control valve corresponding to the cooling cavity where the overheated server is located can be opened, the other control valves are closed, at the moment, the heat dissipation environment of the other servers is kept unchanged, and cooling liquid in the cooling cavity where the control valves are opened circulates, so that the heat dissipation effect is improved; therefore, the problem of downtime caused by overheating of the single-point server is avoided.

Description

Technical Field

[0001] This utility model relates to the field of server liquid cooling technology, and in particular to an immersion liquid cooling device. Background Technology

[0002] Compared to traditional air-cooled systems, immersion liquid cooling systems mean lower energy consumption and carbon emissions. Among them, single-phase immersion liquid cooling technology is becoming a future trend in data center technology development due to its high-efficiency cooling capacity and adaptability to high-power-density cabinets and data centers.

[0003] An immersion liquid-cooled CDU (Colant Distribution Unit) cools the servers inside the tank by controlling the circulation of coolant. Since the CDU controls the coolant flow into the tank based on the temperature information at the tank's inlet and outlet, if a server in the tank experiences a sudden and abnormal increase in CPU temperature, but the overall temperature at the tank's inlet and outlet remains relatively stable, that server may crash due to overheating. Utility Model Content

[0004] The main purpose of this invention is to propose an immersion liquid cooling device, which aims to adjust the cooling of each server individually based on the operating conditions of each server, thereby avoiding the problem of server overheating and subsequent downtime.

[0005] To achieve the above objectives, this utility model proposes an immersion liquid cooling device for cooling hardware equipment, the immersion liquid cooling device comprising:

[0006] An immersion chamber having an open upper cavity divided into multiple horizontally spaced cooling chambers, each filled with coolant for immersing hardware equipment; and...

[0007] The piping structure is used to connect to an external cold source. The piping structure is connected to multiple cooling chambers respectively, and control valves are provided at the corresponding multiple connection points.

[0008] In one embodiment, the immersion liquid cooling device further includes a plurality of diversion components, which are located in the plurality of cooling chambers and at the bottom of the cooling chambers. The plurality of diversion components are connected to the pipeline structure to divert the coolant transported by the pipeline structure and then transport it to the cooling chamber.

[0009] In one embodiment, each of the shunt components includes:

[0010] A support tube is located at the bottom of the corresponding cooling chamber and is connected to the piping structure; and,

[0011] Multiple branch pipes are arranged horizontally at intervals on the support pipe. The lower end of each branch pipe is connected to the support pipe, the upper end of each branch pipe is blocked, and multiple diversion holes are opened on the circumferential side of each branch pipe.

[0012] In one embodiment, each of the flow-dividing components has a flow guide pipe connected to each flow-dividing orifice to guide the coolant flow; and / or,

[0013] Each of the branch pipes includes a first pipe section and a second pipe section with successively increasing diameters, and the second pipe section is provided with the diversion hole.

[0014] In one embodiment, each of the cooling chambers is further provided with a flow equalization plate. The upper surface of the flow equalization plate is provided with a plurality of uniformly arranged through holes. The flow equalization plate divides the cooling chamber into a first cavity and a second cavity arranged in the vertical direction. The first cavity is used for immersion placement of hardware equipment, and the second cavity is connected to the pipeline structure.

[0015] In one embodiment, the immersion liquid cooling device further includes a plurality of diversion components connected to the piping structure, each of the diversion components being disposed within a corresponding second cavity.

[0016] In one embodiment, the piping structure includes a main liquid inlet pipe and a plurality of branch liquid inlet pipes. The plurality of branch liquid inlet pipes are arranged at intervals in the horizontal direction and are connected to the main liquid inlet pipe. The plurality of branch liquid inlet pipes are correspondingly connected to a plurality of cooling chambers. The main liquid inlet pipe is used to connect to an external cold source.

[0017] The control valves are correspondingly installed at the branch inlet pipes.

[0018] In one embodiment, the inner cavity of the immersion tank is open at the top and has a first cavity segment and a second cavity segment arranged sequentially in the vertical direction. The second cavity segment is divided into a liquid collection cavity and a mating cavity spaced apart in the horizontal direction. The mating cavity forms the receiving cavity. The liquid collection cavity is adjacent to a plurality of cooling cavities and communicates with the pipeline structure, so that the coolant in the plurality of cooling cavities can flow into the liquid collection cavity after overflowing from the upper end of the corresponding cooling cavity, and be led out to an external cold source by the pipeline structure.

[0019] In one embodiment, the upper end of the liquid collection chamber is provided with an end cap, the upper end surface of the end cap not exceeding the upper edge of the cooling chamber, and the upper end surface of the end cap having multiple openings corresponding to multiple cooling chambers for coolant to flow in; and / or,

[0020] The height of the liquid collection chamber is smaller than the height of the receiving chamber.

[0021] In one embodiment, the piping structure further includes a liquid outlet pipe, one end of which is connected to the liquid collection chamber and corresponds to the lower middle part of the liquid collection chamber, and the other end of which is used to connect to an external cold source.

[0022] In this invention, multiple servers of the hardware device are placed in multiple cooling chambers and immersed in coolant. The immersion chamber, piping structure, and external cold source form a coolant circulation path. This path passes through multiple cooling chambers, and the coolant inlets of the multiple cooling chambers are controlled to open or close by multiple control valves. Based on the operating conditions of each server, the state of each control valve is controlled. The control valve corresponding to the cooling chamber where an overheated server is located can be opened, while other control valves can be closed. At this time, the heat dissipation environment of other servers remains unchanged, while the coolant in the cooling chamber where the control valve is open will circulate, thereby increasing the heat dissipation effect and avoiding the problem of downtime caused by single-point server overheating. Attached Figure Description

[0023] 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 the structures shown in these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the structure of the first embodiment (at an angle) of the immersion liquid cooling device provided by this utility model;

[0025] Figure 2 for Figure 1 A schematic diagram of the submersible liquid cooling system (from another angle);

[0026] Figure 3 for Figure 1 A schematic diagram of the structure in which the intermediate cooling chamber and the flow distribution assembly are combined;

[0027] Figure 4 for Figure 1 Schematic diagram of the middle splitter component;

[0028] Figure 5 This is a schematic diagram of the control system of this utility model;

[0029] Figure 6 This is a schematic diagram of the server BMC module proposed in this utility model.

[0030] Explanation of icon numbers:

[0031] 100. Immersion liquid cooling device; 1. Immersion tank; 11. Cooling chamber; 111. First cavity; 112. Second cavity; 12. Liquid collection chamber; 13. End cap; 131. Opening; 2. Piping structure; 21. Main inlet pipe; 22. Branch inlet pipe; 23. Outlet pipe; 3. Diverting assembly; 31. Support pipe; 32. Branch pipe; 321. First pipe section; 322. Second pipe section; 33. Guide pipe; 4. Flow equalization plate; a. Control valve.

[0032] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] It should be noted that if the embodiments of this utility model involve directional indication, the directional indication is only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0035] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0036] Immersion liquid cooling systems generally consist of three parts: an outdoor cold source, a CDU module, and a tank. Current solutions involve the main control unit in the CDU determining the required flow rate for overall management by acquiring the temperature difference between the inlet and outlet liquids of the tank. This temperature difference is a fixed value set based on actual operating conditions. When the temperature difference exceeds this fixed value, it indicates that the coolant temperature entering the tank is too high. The main control unit then increases the overall flow rate into the tank's internal piping by adjusting the frequency of the circulating pump and the speed of the outdoor fan, thus achieving temperature control. Conversely, when the temperature difference is less than the fixed value, the main control unit reduces the overall flow rate into the tank's internal piping by adjusting the frequency of the circulating pump and the speed of the outdoor fan, achieving the same goal.

[0037] To ensure efficiency, a tank typically houses several or dozens of servers, all immersed in an inner chamber. When one of these servers experiences an anomaly that causes its CPU temperature to rise and requires more cooling, the CDU's control strategy, based on the entire server cluster, cannot identify anomalies in individual servers. It cannot respond quickly to servers requiring more cooling power, nor can it provide point-to-point cooling, potentially leading to a single server crashing due to overheating.

[0038] In view of this, the present invention provides an immersion liquid cooling device, which aims to adjust the cooling of each server individually according to the operating conditions of each server, so as to avoid the problem of server downtime caused by overheating of a single server.

[0039] Please refer to Figure 1 , Figure 2 and Figure 4 The immersion liquid cooling device 100 includes an immersion tank 1 and a piping structure 2. The immersion tank 1 has an open-top cavity, which is divided into multiple cooling chambers 11 arranged at intervals along the horizontal direction. Each cooling chamber 11 is filled with coolant for immersing hardware equipment. The piping structure 2 is used to connect to an external cold source. The piping structure 2 is connected to the multiple cooling chambers 11 respectively, and control valves a are provided at the corresponding connection points.

[0040] In the technical solution of this utility model, multiple servers of the hardware device are placed in multiple cooling chambers 11 and immersed in the coolant therein. The immersion chamber 1, the pipeline structure 2 and the external cold source form a coolant circulation path. This path passes through multiple cooling chambers 11. The coolant inlets of the multiple cooling chambers 11 are controlled to open or close by multiple control valves a. According to the operating condition information of each server, the state of each control valve a is controlled. The control valve a corresponding to the cooling chamber 11 where the overheated server is located can be opened, while other control valves a are closed. At this time, the heat dissipation environment of other servers remains unchanged, while the coolant in the cooling chamber 11 where the control valve a is opened will circulate, thereby increasing the heat dissipation effect and avoiding the downtime problem caused by single-point server overheating.

[0041] It should be noted that the receiving cavity can be divided into multiple independent cooling cavities 11 by partitions, or multiple groove-shaped structures can be designed and spliced ​​together to form an immersion box 1, in which case the inner cavity of each groove-shaped structure forms a single cooling cavity 11. This utility model does not limit this.

[0042] To ensure that the coolant, after flowing into the cooling chamber 11, is evenly distributed around the corresponding server, rather than being sprayed from a single point and causing uneven heat dissipation, in some embodiments, the immersion liquid cooling device 100 further includes multiple diversion components 3. These components are located within the multiple cooling chambers 11 and at the bottom of each chamber. Each diversion component 3 is connected to the piping structure 2 to divert the coolant supplied by the piping structure 2 into the cooling chambers 11. Specifically, the coolant introduced by the piping structure 2 first enters the diversion components 3, is diverted, and then discharged into the cooling chambers 11. It then gradually flows from the bottom of the cooling chambers 11 into the upper part, improving the uniformity of heat dissipation.

[0043] This utility model does not limit the specific structural form of the shunt component 3. In some embodiments, please refer to Figure 4 Each diversion component 3 includes a support pipe 31 and multiple branch pipes 32. The support pipe 31 is located at the bottom of the corresponding cooling chamber 11 and is connected to the piping structure 2. The multiple branch pipes 32 are arranged horizontally at intervals on the support pipe 31. The lower end of each branch pipe 32 is connected to the support pipe 31, and the upper end of each branch pipe 32 is sealed. Multiple diversion holes are opened on the circumferential side of each branch pipe 32. The coolant introduced by the piping structure 2 first enters the support pipe 31 and is diverted into the multiple branch pipes 32, thereby corresponding to multiple positions of the cooling chamber 11. Then, the end of each branch pipe 32 is diverted a second time to better achieve the effect of dispersed flow of coolant.

[0044] It should be understood that since the branch pipes 32 are distributed vertically and the pipe structure 2 is connected to the support pipe 31, the coolant is delivered from below. Therefore, when there is no coolant in the cooling chamber 11, the coolant flowing out of each diversion hole will naturally flow downwards under gravity and fall to the bottom of the cooling chamber 11. Only after the liquid level rises can the coolant flowing out of the diversion hole be ejected along its extension direction.

[0045] This utility model does not limit the arrangement of multiple branch pipes 32. They can be arranged according to the size of the cooling cavity 11. For example, they can be arranged in a row along the same straight line, or in two or more rows, or they can be arranged in a staggered manner. The connection line of multiple branch pipes 32 is wavy.

[0046] Furthermore, in each diversion component 3, a guide pipe 33 is connected to each diversion hole to guide the coolant flow. The guide pipe 33 has a certain length to prevent multiple diversion holes from converging and affecting the diversion effect when the coolant is discharged due to their close proximity. At the same time, when there is no coolant in the cooling chamber 11, the coolant can flow directly out along the guide pipe 33 and fall to the bottom of the cooling chamber 11, avoiding the coolant from flowing down while adhering to the outer surface of the pipe.

[0047] To increase the outflow velocity, in some embodiments, each branch pipe 32 includes a first pipe section 321 and a second pipe section 322 with successively increasing diameters, and a diversion hole is provided on the second pipe section 322. That is, the branch pipe 32 is composed of two columnar structures with different diameters, so that the coolant can first collect in the second pipe section 322 and then flow out, which can maintain the outflow rate and velocity of the liquid.

[0048] In this embodiment, multiple guide tubes 33 are inserted into the peripheral side of the second pipe section 322.

[0049] In other embodiments, the diversion component 3 can be configured as a liquid distribution plate with a cavity inside. The upper surface of the liquid distribution plate has multiple water outlet holes that are connected to the cavity and evenly distributed. The middle of the side of the liquid distribution plate has an interface that is connected to the cavity. The interface is connected to the pipeline structure 2, that is, the coolant flows in from the interface and flows out evenly through the multiple water outlets, and covers the bottom of the cooling cavity 11, thereby ensuring the uniform introduction of coolant and making the heat dissipation of the hardware device uniform.

[0050] Please refer to Figure 3 Each cooling chamber 11 is also equipped with a flow equalization plate 4. The upper surface of the flow equalization plate 4 has a plurality of evenly arranged through holes. The flow equalization plate 4 divides the cooling chamber 11 into a first cavity 111 and a second cavity 112 arranged in the vertical direction. The first cavity 111 is used for immersing the hardware equipment, and the second cavity 112 is connected to the piping structure 2. The coolant first fills the second cavity 112 and then flows evenly into the first cavity 111 through the plurality of through holes on the flow equalization plate 4, thereby making the heat dissipation of the hardware equipment uniform.

[0051] It should be understood that, please refer to Figure 3 When the immersion liquid cooling device 100 also includes multiple flow distribution components 3 connected to the piping structure 2, each flow distribution component 3 is disposed in a corresponding second cavity 112. This allows the flow distribution components 3 and the flow equalization plate 4 to cooperate with each other to improve the flow distribution effect.

[0052] Specifically, the piping structure 2 includes a main inlet pipe 21 and multiple branch inlet pipes 22. The branch inlet pipes 22 are arranged horizontally at intervals and are connected to the main inlet pipe 21. The branch inlet pipes 22 are connected to multiple cooling chambers 11. The main inlet pipe 21 is used to connect to an external cold source. Multiple control valves a are correspondingly installed at the multiple branch inlet pipes 22. This allows for pre-positioning of the flow to multiple cooling chambers 11, facilitating the installation of multiple control valves a.

[0053] Considering the discharge of coolant, in some embodiments, the inner cavity of the immersion tank 1 is open at the top, forming a first cavity segment and a second cavity segment arranged sequentially in the vertical direction. The second cavity segment is divided into a liquid collection cavity 12 and a mating cavity spaced apart in the horizontal direction. The mating cavity forms a receiving cavity. The liquid collection cavity 12 is adjacent to a plurality of cooling cavities 11 and communicates with the pipeline structure 2. The extending direction of the liquid collection cavity 12 is consistent with the arrangement direction of the plurality of cooling cavities 11. The liquid collection cavity 12 is communicated with the pipeline structure 2. Coolant in the pipeline structure 2 is introduced into multiple... In the cooling chamber 11, after the server is placed, the coolant in the cooling chamber 11 should be sufficient to completely submerge the server without overflowing. When coolant circulation is needed to further reduce the coolant temperature in the cooling chamber 11, adding more coolant will cause the liquid level to rise above the cooling chamber 11 until overflow. At this point, due to the first chamber section, the overflowing coolant will not flow out from the submerged housing 1. The coolant in multiple cooling chambers 11 overflows from the upper end of the corresponding cooling chamber 11 and flows into the collection chamber 12, where it is then discharged to the external cold source by the piping structure 2. This allows the coolant to enter from below, pass through the server, and exit from above. The collection chamber 12 serves to collect and converge the coolant. For example, the length of the collection chamber 12 extends along a second horizontal direction, while the length of each cooling chamber 11 extends along a first horizontal direction, and the multiple cooling chambers 11 are arranged along the second horizontal direction. Its dimension along the second horizontal direction should be related to the sum of the dimensions of the multiple cooling chambers 11 along the second direction, preferably they are equal, thereby ensuring that the coolant in each cooling chamber 11 can overflow and be collected synchronously.

[0054] It should be noted that the upper end of the liquid collection chamber 12 can be set to always be open. In this embodiment, the upper end of the liquid collection chamber 12 is provided with an end cap 13. The upper end surface of the end cap 13 is not higher than the upper edge of the cooling chamber 11. The upper end surface of the end cap 13 has multiple openings 131 corresponding to multiple cooling chambers 11 for coolant to flow in. It should be noted that the server is mounted on the corresponding cooling chamber 11 by means of a mounting ear. A mounting ear is also formed on the end wall of the cooling chamber 11 to cooperate with the server. The mounting ear formed on the cooling chamber 11 has a liquid outlet corresponding to the opening 131, thereby ensuring that the coolant flows out from the liquid outlet and flows into the liquid collection chamber 12. The projections of the liquid outlet and the opening 131 on the horizontal plane should at least partially coincide.

[0055] Furthermore, the height of the liquid collecting chamber 12 is smaller than that of the receiving chamber. Since the function of the liquid collecting chamber 12 is only to collect the coolant and then discharge it, its size only needs to be able to adapt to the inflow and outflow of the coolant. Simplifying the size is beneficial for the weight reduction and miniaturization of the equipment.

[0056] In this practical technical solution, an end cap 13 is provided on the upper end face of the liquid collection chamber 12, which is flush with the upper port of the cooling chamber 11, and the lower end of the liquid collection chamber 12 is higher than the lower end of the cooling chamber 11.

[0057] Furthermore, the piping structure 2 also includes a liquid outlet pipe 23. One end of the liquid outlet pipe 23 is connected to the liquid collection chamber 12 and corresponds to the lower middle part of the liquid collection chamber 12. The other end of the liquid outlet pipe 23 is used to connect to an external cold source. After the coolant flows in, it is discharged from the middle part of the liquid collection chamber 12.

[0058] Furthermore, the lower wall of the collection chamber 12 can be set to be inclined, sloping from the edge to the center, so that it can be guided to the outlet pipe 23.

[0059] Specifically, in this embodiment of the invention, coolant enters through the main inlet pipe 21. Multiple branch inlet pipes 22 are welded to the main inlet pipe 21. The ends of the branch inlet pipes 22 are connected to control valve a. Control valve a has an adjustable angle of 0–90° and is controlled by an electrical signal. The other end of control valve a is connected to the flow distribution assembly 3 via a flange or quick-connect fitting. It is worth noting that the connection method of both ends of control valve a is consistent. The flow distribution assembly 3 is welded and fixed to the bottom of the cooling chamber 11. Simultaneously, a flow equalization plate 4 is arranged above the flow distribution assembly 3 to distribute the coolant... The liquid is dispersed into multiple fluids, ensuring that each component flows smoothly and without obstruction, guaranteeing uniform liquid distribution and preventing temperature imbalance. Above the flow equalization plate 4 is the server, with its two mounting ears placed at the ports of the cooling chamber 11 and connected by self-tapping screws to ensure stable placement. Coolant supplied from the external cold source flows in from the flow distribution component 3 at the bottom of the cooling chamber 11, passes through the server from bottom to top, enters the liquid collection chamber 12 through the opening 131, and is discharged through the liquid outlet pipe 23, finally flowing to the external cold source to complete one heat exchange cycle.

[0060] The entire liquid cooling system consists of three parts: an outdoor cold source, a CDU module, and an immersion liquid cooling unit 100. Please refer to [link / reference needed]. Figure 5 The control process is as follows:

[0061] After the liquid cooling system is powered on, the CDU side calculates the overall flow rate of the liquid cooling system based on the temperature information of the liquid entering and exiting at both ends of the immersion liquid cooling device 100. By adjusting the speed of the circulating pump on the CDU side, the flow rate of the overall pipeline is adjusted. By obtaining the flow rate information fed back by the flow sensor, it is determined whether the current flow rate of the liquid cooling system can meet the heat dissipation requirements of the server group in the immersion liquid cooling device 100.

[0062] When the system is powered on, the control valve a of the immersion liquid cooling device 100 is in the fully open state by default to prevent excessive pipeline pressure due to excessive flow.

[0063] After the server powers on, the BMC module located within the server acquires temperature information of key components, primarily including CPU temperature, memory temperature, and other temperature information.

[0064] CPU Temperature Information: After the server powers on and the BMC module initializes, the BMC sends an IPMI (Intelligent Platform Management Interface) command to the ME (Intel Management Engine) module. The ME module is located within the PCH (Platform Controller Hub). After receiving the IPMI command from the BMC, the ME parses the command. If the command is to obtain CPU temperature information, the ME obtains the CPU temperature information fed back by the DTS (Digital Temperature Sensor) located inside the CPU through the PECI (Platform Environment Control Interface).

[0065] Memory temperature information: After the BMC is powered on and initialized, it communicates with the SPD (serial presence detect) chip located in the memory module through the I3C (Improved Inter Integrated Circuit) interface. The SPD chip can obtain the temperature information from the temperature sensor integrated on the memory module and store the data in the SPD chip.

[0066] After the BMC has acquired all the temperature information on the server motherboard, it compares the temperature information to find the component with the highest temperature at any given time.

[0067] The acquired temperature information is compared with the set threshold information, where the threshold information is an effective value set based on actual heat dissipation. When the acquired temperature information exceeds the set threshold information, it indicates that the currently entering coolant is insufficient to meet the heat dissipation requirements. The BMC controls the opening of control valve a through its internal control module, adjusting the angle of control valve a to increase the flow rate of coolant entering the cooling chamber 11, ensuring more heat exchange. Control valve a is an electrically controlled device with an effective rotation angle of 90 degrees. That is, when the angle is 0 degrees, the valve is in the closed state, and when the angle is 90 degrees, the valve is in the fully open state. Simultaneously, control valve a has control signals and position feedback signals. The control signal is used to control the opening angle of valve a. The control signal is a voltage input signal, corresponding to a voltage input of 2-10V. That is, when the input voltage is less than 2V, the control valve a is at 0 degrees, and when the input voltage is 10V, the control valve a is at 90 degrees. The position feedback signal is the angle information fed back by control valve a to the controller, allowing it to know the current opening information of control valve a. The specific connection is as follows:

[0068] Please refer to Figure 6The AO signal pin in the control module within the BMC module is connected to the control signal of the electric control valve a, and the AI ​​signal in the control module within the BMC module is connected to the feedback signal of the electric control valve a. When the angle of the electric valve needs to be adjusted, the control module outputs a voltage signal of 2-10V through the AO output pin. When the electric control valve a receives the voltage signal from the control module, it converts the voltage signal into the angle information to be controlled. The control correspondence is: angle information = maximum adjustment angle * input voltage / (maximum voltage - reference voltage). After the angle adjustment is completed, the electric control valve a feeds back the adjusted angle information to the controller module of the BMC through the feedback signal.

[0069] Correspondingly, if the temperature difference between the obtained temperature information and the threshold exceeds 5°C, the control valve a of the immersion liquid cooling device 100 is reduced to decrease the flow rate of coolant entering the cooling chamber 11; the 5°C standard is mainly to ensure sufficient heat dissipation margin and prevent frequent adjustment of the control valve a.

[0070] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An immersion liquid cooling device for cooling hardware equipment, characterized in that, The immersion liquid cooling device includes: An immersion chamber having an open upper cavity divided into multiple horizontally spaced cooling chambers, each filled with coolant for immersing hardware equipment; and... The piping structure is used to connect to an external cold source. The piping structure is connected to multiple cooling chambers respectively, and control valves are provided at the corresponding multiple connection points.

2. The immersion liquid cooling device as described in claim 1, characterized in that, The immersion liquid cooling device also includes multiple diversion components, which are located in the multiple cooling chambers and at the bottom of the cooling chambers. The multiple diversion components are connected to the pipeline structure to divert the coolant transported by the pipeline structure and then transport it to the cooling chamber.

3. The immersion liquid cooling device as described in claim 2, characterized in that, Each of the aforementioned splitter components includes: A support tube, located at the bottom of the corresponding cooling chamber and connected to the piping structure; and, Multiple branch pipes are arranged horizontally at intervals on the support pipe. The lower end of each branch pipe is connected to the support pipe, the upper end of each branch pipe is blocked, and multiple diversion holes are opened on the circumferential side of each branch pipe.

4. The immersion liquid cooling device as described in claim 3, characterized in that, In each of the aforementioned flow distribution components, a guide pipe is connected to each of the flow distribution holes to guide the coolant flow; and / or, Each of the branch pipes includes a first pipe section and a second pipe section with successively increasing diameters, and the second pipe section is provided with the diversion hole.

5. The immersion liquid cooling device as described in any one of claims 1 to 4, characterized in that, Each of the cooling chambers is further provided with a flow equalization plate. The upper surface of the flow equalization plate has a plurality of evenly arranged through holes. The flow equalization plate divides the cooling chamber into a first cavity and a second cavity arranged in the vertical direction. The first cavity is used for immersion of hardware equipment, and the second cavity is connected to the pipeline structure.

6. The immersion liquid cooling device as described in claim 5, characterized in that, The immersion liquid cooling device also includes multiple diversion components connected to the pipeline structure, each of which is disposed in the corresponding second cavity.

7. The immersion liquid cooling device as described in claim 1, characterized in that, The pipeline structure includes a main liquid inlet pipe and multiple branch liquid inlet pipes. The multiple branch liquid inlet pipes are arranged at intervals in the horizontal direction and are connected to the main liquid inlet pipe. The multiple branch liquid inlet pipes are connected to multiple cooling chambers respectively. The main liquid inlet pipe is used to connect to an external cold source. The control valves are correspondingly installed at the branch inlet pipes.

8. The immersion liquid cooling device as described in claim 1, characterized in that, The inner cavity of the immersion tank is open at the top and has a first cavity segment and a second cavity segment arranged sequentially in the vertical direction. The second cavity segment is divided into a liquid collection cavity and a mating cavity spaced apart in the horizontal direction. The mating cavity forms the receiving cavity. The liquid collection cavity is adjacent to a plurality of cooling cavities and is connected to the pipeline structure so that the coolant in the plurality of cooling cavities can flow into the liquid collection cavity after overflowing from the upper end of the corresponding cooling cavity, and then be led out to an external cold source by the pipeline structure.

9. The immersion liquid cooling device as described in claim 8, characterized in that, The upper end of the liquid collection chamber is provided with an end cap, the upper end surface of which is not higher than the upper edge of the cooling chamber. The upper end surface of the end cap has multiple openings corresponding to the multiple cooling chambers to allow coolant to flow in; and / or, The height of the liquid collection chamber is smaller than the height of the receiving chamber.

10. The immersion liquid cooling device as described in claim 8, characterized in that, The pipeline structure also includes a liquid outlet pipe, one end of which is connected to the liquid collection chamber and corresponds to the lower middle part of the liquid collection chamber, and the other end of which is used to connect to an external cold source.

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