Submerged liquid cooling device
Patent Information
- Application Number
- CN202611496872.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-09-23
- Publication Date
- 2026-11-03
AI Technical Summary
Existing immersion liquid cooling systems in data centers suffer from a lack of flexibility in the design of coolant distribution units, limited expansion capabilities, and increased leakage points due to the coolant distribution units being located outside the cabinet, thus affecting operational efficiency.
The coolant distribution unit is located inside the cabinet and connected to the first cavity through a detachable first check structure, reducing piping connections and enabling flexible expansion and hot-swappable maintenance of the coolant distribution unit, thereby reducing system leakage points.
It enhances the capacity expansion capability of the coolant distribution unit, reduces system leakage points, ensures business sustainability, and improves coolant circulation efficiency and system efficiency.
Smart Images
Figure CN123035649A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of liquid cooling technology, and in particular to an immersion liquid cooling device. Background Technology
[0002] With the rapid development of artificial intelligence, high-performance computing, and data center technologies, the power density of electronic devices is increasing at an unprecedented rate. Based on this, immersion liquid cooling technology is increasingly being used in data center heat dissipation solutions due to its extremely high heat exchange efficiency and excellent quiet performance.
[0003] However, existing immersion liquid cooling systems still face many challenges in practical applications. For example, the coolant distribution unit (CDU) design in many systems often lacks flexibility and has limited expansion capabilities. In scenarios where data center traffic grows dynamically, fixed-specification coolant distribution units are difficult to expand on demand, leading to excessive initial investment or difficulties in later modifications, failing to achieve optimal cost-effectiveness throughout the entire lifecycle. Furthermore, in traditional solutions, the coolant distribution unit is located outside the rack and needs to be connected to the rack interior via piping. As the number of pipes and interfaces increases, the number of leakage points in the entire system increases. Additionally, when a coolant distribution unit leaks, the system needs to be shut down for maintenance, significantly impacting work efficiency. Summary of the Invention
[0004] This application provides an immersion liquid cooling device that allows the coolant distribution unit to be flexibly expanded and increased in accordance with dynamic changes in heat dissipation demand, and can be hot-swapped for maintenance in case of failure. It also reduces system leakage points to ensure business sustainability.
[0005] This application provides an immersion liquid cooling device, including a cabinet, a heating element, and at least one coolant distribution unit; The cabinet includes a base plate, side plates, and a cover plate. The side plates are connected between the base plate and the cover plate to form a accommodating cavity for containing coolant. A first partition is provided in the accommodating cavity to divide the accommodating cavity into a first cavity and a second cavity. The first cavity is located at the bottom of the second cavity along a first direction. The heating element and the coolant distribution unit are respectively disposed in the second cavity. The first direction is the arrangement direction of the base plate and the cover plate. The first partition has multiple liquid supply holes and at least two connection holes. The number of connection holes is greater than or equal to the number of coolant distribution units. The coolant in the first cavity flows to the second cavity through the liquid supply holes. The connection holes are provided with a first check valve structure. The coolant distribution units are detachably connected to the first check valve structure. When the first check valve structure is disconnected from the coolant distribution unit, the connection hole is in a closed state. When the first check valve structure is connected to the coolant distribution unit, the connection hole is in a conductive state, so that the coolant distribution unit communicates with the first cavity.
[0006] The immersion liquid cooling device provided in this application arranges the coolant distribution unit inside the cabinet. The coolant distribution unit is connected to the first cavity through a first check valve, reducing the number of connecting pipes and helping to reduce leakage points in the system. The coolant inside the coolant distribution unit can enter the first cavity and then flow into the second cavity through the supply port, thereby controlling the coolant circulation volume. Since the number of connection ports is greater than or equal to the number of coolant distribution units in the cabinet, the coolant distribution units can be installed in the cabinet in advance, with only a portion of the coolant distribution units activated, or additional coolant distribution units can be added later as needed for heat dissipation, thus adjusting the number of operating coolant distribution units in the cabinet. Therefore, the immersion liquid cooling device in this application, by setting a first check valve that is detachably connected to the coolant distribution unit through the connection port, can flexibly adjust the number of coolant distribution units, effectively improving expansion capabilities. Furthermore, when the coolant distribution unit malfunctions and requires maintenance, it is only necessary to separate the coolant distribution unit from the first check structure, thereby closing the corresponding connection hole and starting the coolant distribution unit. This eliminates the need for the immersion liquid cooling device to stop working, achieving hot-swappable coolant distribution units and ensuring business sustainability.
[0007] In some possible implementations, the second cavity is provided with a second partition, which is connected to the side plate to divide the second cavity into a heat dissipation cavity and an overflow cavity arranged along a second direction. The heating element and the coolant distribution unit are disposed in the heat dissipation cavity, and the second direction is perpendicular to the first direction. The overflow cavity has an overflow port on the side facing the cover plate, and the overflow cavity is connected to the heat dissipation cavity through the overflow port; The overflow chamber is also provided with a first return port, and the coolant distribution unit is provided with a second return port, with the first return port and the second return port connected together.
[0008] In some possible implementations, the coolant distribution unit abuts against the second partition, the second return port is located on the side of the coolant distribution unit facing the second partition, and the first return port is directly opposite the second return port.
[0009] In some possible implementations, the second partition is provided with a sealing ring surrounding the first return port on the side facing the coolant distribution unit.
[0010] In some possible implementations, the first check structure includes a first housing, a first check plate, and a first check spring; The first housing has a first cavity inside, and the first housing has a first opening and a second opening communicating with the first cavity at both ends along the first direction, and the end of the first housing with the first opening is connected to the coolant distribution unit. The first check plate and the first check spring are disposed in the first cavity, and the first check plate is connected to the side of the first check spring facing the first opening; The first check plate can move relative to the first housing along the first direction. When the first check spring is in the initial state, the first check plate abuts against the inner wall of the first housing. When the first check spring is in the compressed state, there is a gap between the first check plate and the inner wall of the first housing.
[0011] In some possible implementations, the first housing passes through the connection hole, one end of the first housing having the second opening is located in the first cavity, and the second opening has a filter module.
[0012] In some possible implementations, the end of the first housing with the first opening is provided with an external thread, and the first housing is threadedly engaged with the coolant distribution unit through the external thread.
[0013] In some possible implementations, the bottom of the coolant distribution unit is also provided with a coolant inlet and outlet port, which is provided with a second check structure. When the second check structure is in a first state, the coolant inlet and outlet port is in a closed state, and when the second check structure is in a second state, the coolant inlet and outlet port is in a conductive state.
[0014] In some possible implementations, the second check structure includes a second housing, a second check plate, and a second check spring; The second housing has a second cavity inside. The second housing has a third opening and a fourth opening communicating with the second cavity at both ends along the first direction. The end of the second housing with the third opening is connected to the liquid inlet and exhaust outlet. The second check plate and the second check spring are disposed in the second cavity, and the second check plate is connected to the side of the second check spring near the fourth opening; The second check spring can move relative to the second housing along the first direction. When the second check spring is in the initial state, the second check plate abuts against the inner wall of the second housing. When the second check spring is in the compressed state, there is a gap between the second check plate and the inner wall of the second housing.
[0015] In some possible implementations, the cover plate is provided with a transparent viewing window and a monitoring screen. Attached Figure Description
[0016] Figure 1 This is a side view of the internal structure of the immersion liquid cooling device in an embodiment of this application; Figure 2 This is a top view of an immersion liquid cooling device in an embodiment of this application; Figure 3 This is a schematic diagram of one structure of the first partition in an embodiment of this application; Figure 4 This is a schematic diagram of a coolant distribution unit in one embodiment of this application; Figure 5 This is a schematic diagram of the structure of the immersion liquid cooling device cover plate when it is opened in an embodiment of this application; Figure 6 This is a cross-sectional structural diagram of the first check valve structure in an embodiment of this application; Figure 7 This is a schematic diagram of the coolant distribution unit from another angle in an embodiment of this application; Figure 8 This is a cross-sectional schematic diagram of the second check valve structure in an embodiment of this application.
[0017] In the picture: 100 - Cabinet; 110 - Base plate; 120 - Side plate; 130 - Cover plate; 131 - Transparent window; 132 - Monitoring screen; 200 - Coolant distribution unit; 210 - Second return port; 300 - First partition; 310 - Supply hole; 320 - Connection hole; 400 - First check valve structure; 410 - First housing; 411 - First opening; 412 - Second opening; 413 - External thread; 420 - First check valve plate; 430 - First check valve spring; 440 - Guide rod; 500 - Second partition; 600 - Second check valve structure; 610 - Second housing; 611 - Third opening; 612 - Fourth opening; 620 - Second check valve plate; 630 - Second check valve spring; S1 - First cavity; S2 - Second cavity; S21 - Overflow cavity; S22 - Heat dissipation cavity; R1 - Overflow port. Detailed Implementation
[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0019] refer to Figures 1 to 4 The immersion liquid cooling device in this embodiment may include a cabinet 100, a heating element (not shown in the figure), and at least one coolant distribution unit 200. The cabinet 100 includes a base plate 110, a side plate 120, and a cover plate 130. The side plate 120 is connected between the base plate 110 and the cover plate 130 to form a cabinet structure with a receiving cavity, wherein the receiving cavity can be used to hold coolant, and the heating element and the coolant distribution unit 200 are also respectively disposed in the receiving cavity.
[0020] The accommodating cavity is provided with a first partition 300, which can be used to divide the accommodating cavity into a first cavity S1 and a second cavity S2 arranged along a first direction. Here, the first direction can be regarded as the arrangement direction of the bottom plate 110 and the cover plate 130. The first cavity S1 is located at the bottom of the second cavity S2, and the heating element and the coolant distribution unit 200 are respectively disposed in the second cavity S2.
[0021] In this embodiment, the heating element can be an IT electronic device. There can be multiple heating elements, each fixed in a accommodating cavity and immersed in coolant.
[0022] The first partition 300 is provided with multiple liquid supply holes 310. The first cavity S1 and the second cavity S2 are connected through the liquid supply holes 310, allowing the coolant in the first cavity S1 to flow to the second cavity S2 through the liquid supply holes 310. The first partition 300 is also provided with at least two connection holes 320, each with a first check valve structure 420. The coolant distribution unit 200 is detachably connected to the first check valve structure 420. Specifically, when the first check valve structure 420 is connected to the coolant distribution unit 200, the connection hole 320 is in a conductive state, allowing the coolant distribution unit 200 to communicate with the first cavity S1, and the coolant in the coolant distribution unit 200 to flow into the first cavity S1 through the connection hole 320. When the first check valve structure 420 is disconnected from the coolant distribution unit 200, the connection hole 320 is in a closed state, breaking the communication between the first cavity S1 and the second cavity S2 at the connection hole 320.
[0023] In this embodiment, the coolant distribution unit 200 is arranged inside the cabinet and connected to the first cavity S1 via the first check structure 420, eliminating the need for connecting pipes and thus reducing leakage points in the system. The coolant distribution unit 200 is connected to the first cavity S1 via the first check structure 420, allowing coolant inside the coolant distribution unit 200 to enter the first cavity S1 and then flow into the second cavity S2 through the supply hole 310, thereby controlling the coolant circulation volume. Since the number of connection holes 320 is greater than or equal to the number of coolant distribution units 200 in the cabinet 100, when the number of connection holes 320 equals the number of coolant distribution units 200, multiple coolant distribution units 200 can be pre-installed in the cabinet 100, with some as spares. When the heat dissipation demand inside the cabinet 100 increases, the remaining coolant distribution units 200 are then activated. When the number of connection holes 320 exceeds the number of coolant distribution units 200, the heat exchange effect can be enhanced by adding more coolant distribution units 200 inside the cabinet 100 when the heat dissipation demand inside the cabinet 100 increases. Thus, by providing a first check valve structure 420 that is detachably connected to the coolant distribution unit 200 in the connection holes 320, the number of coolant distribution units 200 can be flexibly adjusted, effectively improving expansion capabilities and thus meeting the needs of business sustainability.
[0024] It is worth mentioning that when only some of the connection holes 320 are connected to the coolant distribution unit 200, the idle connection holes 320 are closed due to the presence of a first check valve 420. This prevents coolant flow between the first cavity S1 and the second cavity S2 through the idle connection holes 320, reducing disordered coolant flow. Furthermore, when one or more coolant distribution units 200 require maintenance, they can be disassembled from the first check valve 420. After disassembly, the first check valve 420 closes the connection holes 320. Meanwhile, the prepared coolant distribution units 200 connected to other connection holes 320 can be started, or a new coolant distribution unit 200 can be placed in the cabinet and connected to a prepared connection hole 320 to continue normal operation. This can also be understood as meaning that when performing maintenance on the coolant distribution unit 200, it is not necessary to stop the power supply to the immersion liquid cooling device, thereby realizing the hot-swappable operation of the coolant distribution unit 200.
[0025] like Figure 3As shown, since the first partition 300 is provided with both a liquid supply hole 310 and a connection hole 320, the connection hole 320 can be provided at one end of the first partition 300 in the length direction, and multiple liquid supply holes 310 can be provided at intervals along the length direction of the first partition 300, so that different numbers of liquid supply holes 310 can be designed according to different usage requirements.
[0026] In addition, such as Figure 2 As shown, the cover plate 130 may also be equipped with a transparent viewing window 131 and a monitoring screen 132, with the monitoring screen 132 located on the side of the cover plate 130 opposite to the base plate 110. It is electrically connected to each coolant distribution unit 200. Operators can not only observe the status inside the cabinet 100 through the transparent viewing window 131, but also control the working status of the coolant distribution units 200 through the monitoring screen 132.
[0027] refer to Figure 1 , Figure 4 and Figure 5 The second cavity S2 may also be provided with a second partition 500, which is connected to the side plate 120 to divide the second cavity S2 into a heat dissipation cavity S22 and an overflow cavity S21 arranged along the second direction. The heating element and the coolant distribution unit 200 are respectively disposed in the heat dissipation cavity S22, wherein the second direction is perpendicular to the first direction.
[0028] The end of the second partition 500 furthest from the first partition 300 is lower than the cover plate 130, so that there is a certain gap between the top of the overflow cavity S21 and the cover plate 130. An overflow port R1 is provided on the side of the overflow cavity S21 facing the cover plate 130. The overflow cavity S21 can communicate with the heat dissipation cavity S22 through the overflow port R1, so that the coolant in the heat dissipation cavity S22 can flow into the overflow cavity S21 through the overflow port R1. The overflow cavity S21 also has a first return port (not shown in the figure), and the coolant distribution unit 200 has a second return port 210. The first return port and the second return port 210 are connected, so that the coolant in the overflow cavity S21 can flow into the coolant distribution unit 200 through the first return port and the second return port 210.
[0029] In this embodiment, during normal operation of the immersion liquid cooling device, the temperature of the coolant that exchanges heat with the heating element in the heat dissipation cavity S22 rises gradually. It then flows into the overflow cavity S21 through the overflow port R1, and then into the coolant distribution unit 200 through the first return port and the second return port 210. The coolant distribution unit 200 can also be connected to an external cold source, which can enter the coolant distribution unit 200 to exchange heat with the circulating coolant inside, thereby lowering the coolant temperature. The cooled coolant flows into the first cavity S1 through the first check valve 420, and then back into the heat dissipation cavity S22 through the supply port 310. Thus, during the circulation process, the coolant in the cabinet 100 can exchange heat with the heating element, thereby achieving a heat dissipation effect on the heating element.
[0030] Understandably, by forming an overflow cavity S21 in the second cavity S2 and connecting the overflow cavity S21 to the coolant distribution unit 200, the coolant can be ensured to flow back to the coolant distribution unit 200 in an orderly and smooth manner, thereby improving the coolant circulation efficiency. Simultaneously, since the coolant temperature rises, placing the overflow port R1 at the top of the overflow cavity S21 can maximize the flow of high-temperature coolant into the overflow cavity S21, reducing the probability of medium- and low-temperature coolant flowing into the overflow cavity S21, thereby improving heat exchange efficiency.
[0031] In one optional embodiment, the coolant distribution unit 200 may be disposed in contact with the second partition 500. In this case, the second return port 210 may be disposed on the side of the coolant distribution unit 200 facing the second partition 500, and the first return port is disposed directly opposite the second return port 210. That is to say, the coolant distribution unit 200 and the overflow chamber S21 are directly connected through the first return port and the second return port 210, eliminating the need for connecting pipes between the two, thereby shortening the flow path of the coolant and thus improving the circulation efficiency of the coolant.
[0032] In conjunction with the design of the coolant distribution unit 200 in the aforementioned embodiment, where the outlet is connected to the connection hole 320 via the first check structure 420, the need for piping is eliminated. The coolant inside the coolant distribution unit 200 can directly flow into the first cavity S1 through the first check structure 420, thus effectively optimizing the flow path and distribution of the coolant. Therefore, the immersion liquid cooling device in this embodiment, through the optimized design of the first check structure 420, the overflow cavity S21, and the coolant distribution unit 200, can reduce the supply resistance of the coolant distribution unit 200, improve the efficiency of the circulating pump, effectively improve system efficiency, and ensure that the heat-generating elements are cooled efficiently and uniformly, thereby effectively avoiding localized overheating.
[0033] Furthermore, in this embodiment, a sealing ring (not shown in the figure) may be provided on the side of the second partition 500 facing the coolant distribution unit 200. This sealing ring may be arranged around the first return port. When the coolant distribution unit 200 abuts against the second partition 500, the coolant distribution unit 200 can press the sealing ring, thereby forming a good sealing connection between the coolant distribution unit 200 and the second partition 500, ensuring that the coolant in the overflow chamber S21 can only return to the coolant distribution unit 200 through the first return port and the second return port 210.
[0034] It should be noted that the size of the first return port can be greater than or equal to the size of the second return port 210. In this way, when the coolant distribution unit 200 comes into contact with the second partition 500, the second return port 210 can be completely located within the space enclosed by the sealing ring, thereby disconnecting the direct connection between the second return port 210 and the heat dissipation cavity S22.
[0035] In some embodiments, combined with Figure 3 , Figure 4 and Figure 6 The first check valve structure 420 may include a first housing 410, a first check valve plate 420, and a first check valve spring 430. The first housing 410 has a first cavity inside. The first housing 410 has a first opening 411 and a second opening 412 at both ends along a first direction, respectively. The first opening 411 and the second opening 412 communicate with the first cavity, so that the first housing 410 is in a through-hole state in the first direction. The first check valve plate 420 and the first check valve spring 430 are disposed within the first cavity. The first check valve plate 420 is connected to the side of the first check valve spring 430 facing the first opening 411. The first check valve spring 430 can extend and retract along the first direction to drive the first check valve plate 420 to move relative to the first housing 410 along the first direction.
[0036] When the first check spring 430 is in its initial state (i.e., the first check spring 430 is not subjected to external force or the force at both ends of the first check spring 430 is uniform), the first check plate 420 abuts against the inner wall of the first housing 410. In this state, the first opening 411 and the second opening 412 are separated by the first check plate 420, and the connecting hole 320 is closed, preventing coolant from flowing through the connecting hole 320. When the first check plate 420 moves down, causing the first check spring 430 to be in a compressed state, there is a gap between the first check plate 420 and the inner wall of the first housing 410, and the connecting hole 320 is open. At this time, coolant can flow from the first opening 411 through the gap between the first check plate 420 and the inner wall of the first housing 410 to the second opening 412.
[0037] In this embodiment, the coolant distribution unit 200 is connected to the end of the first housing 410 that has the first opening 411. When the coolant distribution unit 200 is turned on, the coolant in the coolant distribution unit 200 applies pressure to the first check plate 420, causing the first check spring 430 to be compressed. A gap exists between the first check plate 420 and the inner wall of the first housing 410, thereby enabling the coolant to flow from the coolant distribution unit 200 to the first cavity S1. When the coolant distribution unit 200 is separated from the first housing 410, the pressure applied to the first check plate 420 disappears, the first check spring 430 rebounds, causing the first check plate 420 to return to its initial position, thereby closing the connection hole 320.
[0038] In one optional embodiment, the portion of the first housing 410 near the first opening 411 can be a tapered structure, with the cross-sectional dimensions of the tapered structure gradually decreasing along the direction from the second opening 412 to the first opening 411. When the first check spring 430 is in its initial state, the cross-sectional dimensions of the first housing 410 corresponding to the first check plate 420 in this state are the same as or slightly smaller than the cross-sectional dimensions of the first check plate 420, so that there is no gap between the first check plate 420 and the inner wall of the first housing 410. When the first check plate 420 moves downward, causing the first check spring 430 to be compressed, the cross-sectional dimensions of the first housing 410 corresponding to the first check plate 420 in this state are larger than the cross-sectional dimensions of the first check plate 420, and there is a gap between the first check plate 420 and the inner wall of the first housing 410. Thus, by designing the shape of the first housing 410, the switching between the flow state and the check state of the first check structure 420 can be achieved.
[0039] Alternatively, in another optional embodiment, the cross-sectional shape of the first housing 410 is, for example, circular, and the cross-sectional shape of the first check plate 420 is also generally circular. Furthermore, the outer peripheral surface of the first check plate 420 is provided with multiple grooves, resulting in a partially circular structure. The first housing 410 has protrusions corresponding to the grooves. When the first check spring 430 is in its initial state, the protrusions engage with the grooves, thereby allowing the first check plate 420 to block the first opening 411 and the second opening 412, and the connecting hole 320 to be closed. When the first check plate 420 moves downward, the protrusions disengage from the grooves, and the protrusions and grooves are at different heights. A gap exists between the groove and the inner wall of the first housing 410, allowing coolant to flow through the groove. Thus, by designing the shape of the first check plate 420, the switching between the flow state and the check state of the first check structure 420 can be achieved.
[0040] Furthermore, such as Figure 6As shown, a guide rod 440 may also be provided inside the first housing 410, and a first check spring 430 is sleeved on the guide rod 440. When the first check spring 430 extends or retracts, the guide rod 440 can guide the first check spring 430, so that the first check spring 430 extends or retracts in a preset direction. In this way, since the first check spring 430 can extend or retract axially, during the synchronous movement of the first check plate 420 and the first check spring 430, it can be ensured that the first check plate 420 moves axially. When the first check spring 430 is in a compressed state, the gap between the first check plate 420 and the inner wall of the first housing 410 is evenly distributed, so as to optimize the flow path of the coolant and thus help reduce the supply resistance of the coolant distribution unit 200.
[0041] Specifically, when connecting the first housing 410 to the coolant distribution unit 200, the end of the first housing 410 with the first opening 411 may be provided with an external thread 413, and the outlet of the coolant distribution unit 200 may be provided with an internal thread. The first housing 410 can be threaded with the coolant distribution unit 200 through the external thread 413, thereby realizing a detachable connection between the coolant distribution unit 200 and the first housing 410. In this way, the assembly and disassembly of the first housing 410 and the coolant distribution unit 200 are simple to perform.
[0042] In addition, combined Figure 1 and Figure 6 The first housing 410 may also pass through the connecting hole 320. One end of the first housing 410 with a first opening 411 is located in the second cavity S2, and the other end of the first housing 410 with a second opening 412 is located in the first cavity S1. The second opening 412 may also be equipped with a filter module. When the coolant in the coolant distribution unit 200 flows into the first cavity S1 through the first housing 410, the filter module can filter the coolant to improve its cleanliness. A clean coolant reduces the risk of corrosion to the heating element during heat exchange.
[0043] In some embodiments, reference Figure 1 and Figure 7 The coolant distribution unit 200 is also provided with a coolant inlet and outlet port at the bottom. The coolant inlet and outlet port is provided with a second check structure 600. When the second check structure 600 is in the first state, the coolant inlet and outlet port is in the closed state. When the second check structure 600 is in the second state, the coolant inlet and outlet port is in the open state.
[0044] Understandably, when the coolant distribution unit 200 is not placed in the rack 100, the second check valve 600 is in its first state, preventing external moisture from entering the coolant distribution unit 200 through the inlet and outlet ports, thus ensuring the cleanliness of the coolant distribution unit 200. When the coolant distribution unit 200 is placed in the rack 100, the second check valve 600 is in its second state, the inlet and outlet ports are open, allowing air in the coolant distribution unit 200 to be expelled, and simultaneously, coolant in the heat dissipation cavity S22 can flow into the coolant distribution unit 200, facilitating the smooth immersion of the coolant distribution unit 200 into the heat dissipation cavity S22.
[0045] It should be noted that after the coolant distribution unit 200 is successfully immersed in the heat dissipation chamber S22, the second check valve structure 600 can abut against the first partition 300, so that the inlet and outlet ports are blocked by the first partition 300, and the coolant cannot flow into the coolant distribution unit 200 through the inlet and outlet ports. Subsequently, only the coolant in the overflow chamber S21 flows into the coolant distribution unit 200, ensuring good coolant circulation and facilitating the controller's control over the coolant circulation volume and circulation temperature.
[0046] Specifically, in combination Figure 7 and Figure 8 The second check structure 600 may include a second housing 610, a second check plate 620, and a second check spring 630. The second housing 610 has a second cavity inside. The second housing 610 has a third opening 611 and a fourth opening 612 at its two ends along a first direction, respectively. The third opening 611 and the fourth opening 612 communicate with the second cavity, so that the second housing 610 is in a through-hole state in the first direction. The second check plate 620 and the second check spring 630 are disposed within the second cavity. The second check plate 620 is connected to the side of the second check spring 630 facing the fourth opening 612. The second check spring 630 can extend and retract along the first direction to drive the second check plate 620 to move relative to the second housing 610 along the first direction.
[0047] When the second check spring 630 is in its initial state (i.e., the second check spring 630 is not subjected to external force or the force at both ends of the second check spring 630 is uniform), the second check plate 620 abuts against the inner wall of the second housing 610. In this state, the third opening 611 and the fourth opening 612 are separated by the second check plate 620, and the inlet and outlet ports are closed, preventing coolant from flowing through them. When the second check plate 620 moves downward, causing the second check spring 630 to be in a compressed state, a gap exists between the second check plate 620 and the inner wall of the second housing 610, and the inlet and outlet ports are open. At this time, coolant can flow from the second opening 412 through the gap between the second check plate 620 and the inner wall of the second housing 610 to the second opening 412.
[0048] In this embodiment, the inlet and outlet of the coolant distribution unit 200 are connected to the end of the second housing 610 where the third opening 611 is provided. When the coolant distribution unit 200 is placed in the cabinet 100, the coolant in the second cavity S2 applies pressure to the second check plate 620, causing the second check spring 630 to be compressed. A gap exists between the second check plate 620 and the inner wall of the second housing 610, thereby enabling the coolant to flow from the second cavity S2 to the coolant distribution unit 200. When the second housing 610 abuts against the first partition 300, the fourth opening 612 is blocked, thereby closing the inlet and outlet.
[0049] In one optional embodiment, the portion of the second housing 610 near the fourth opening 612 can be a tapered structure, with the cross-sectional dimensions of the tapered structure gradually decreasing along the direction from the third opening 611 to the fourth opening 612. When the second check spring 630 is in its initial state, the cross-sectional dimensions of the second housing 610 corresponding to the second check plate 620 in this state are the same as or slightly smaller than the cross-sectional dimensions of the second check plate 620, so that there is no gap between the second check plate 620 and the inner wall of the second housing 610. When the second check plate 620 moves downward, causing the second check spring 630 to be compressed, the cross-sectional dimensions of the second housing 610 corresponding to the second check plate 620 in this state are larger than the cross-sectional dimensions of the second check plate 620, and a gap exists between the second check plate 620 and the inner wall of the second housing 610. Thus, by designing the shape of the second housing 610, the switching between the flow state and the check state of the second check structure 600 can be achieved.
[0050] Alternatively, in another optional embodiment, the cross-sectional shape of the second housing 610 is, for example, circular, and the cross-sectional shape of the second check plate 620 is also generally circular. Furthermore, the outer peripheral surface of the second check plate 620 is provided with multiple grooves, resulting in a partially circular structure. The second housing 610 has protrusions corresponding to the grooves. When the second check spring 630 is in its initial state, the protrusions engage with the grooves, thereby allowing the second check plate 620 to block the second opening 412 and the exhaust port, keeping them closed. When the second check plate 620 moves downward, the protrusions disengage from the grooves, and the protrusions and grooves are at different heights. A gap exists between the groove and the inner wall of the second housing 610, allowing coolant to flow through the groove. Thus, by designing the shape of the second check plate 620, the switching between the flow state and the check state of the second check structure 600 can be achieved.
[0051] Obviously, those skilled in the art can make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the invention. Therefore, if these modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include these modifications and variations.
Claims
1. An immersion liquid cooling device, characterized in that, Includes a cabinet, heat-generating elements, and at least one coolant distribution unit; The cabinet includes a base plate, side plates, and a cover plate. The side plates are connected between the base plate and the cover plate to form a accommodating cavity for containing coolant. A first partition is provided in the accommodating cavity to divide the accommodating cavity into a first cavity and a second cavity. The first cavity is located at the bottom of the second cavity along a first direction. The heating element and the coolant distribution unit are respectively disposed in the second cavity. The first direction is the arrangement direction of the base plate and the cover plate. The first partition has multiple liquid supply holes and at least two connection holes. The number of connection holes is greater than or equal to the number of coolant distribution units. The coolant in the first cavity flows to the second cavity through the liquid supply holes. The connection holes are provided with a first check valve structure. The coolant distribution units are detachably connected to the first check valve structure. When the first check valve structure is disconnected from the coolant distribution unit, the connection hole is in a closed state. When the first check valve structure is connected to the coolant distribution unit, the connection hole is in a conductive state, so that the coolant distribution unit communicates with the first cavity.
2. The immersion liquid cooling device according to claim 1, characterized in that, The second cavity is provided with a second partition, which is connected to the side plate to divide the second cavity into a heat dissipation cavity and an overflow cavity arranged along a second direction. The heating element and the coolant distribution unit are disposed in the heat dissipation cavity, and the second direction is perpendicular to the first direction. The overflow cavity has an overflow port on the side facing the cover plate, and the overflow cavity is connected to the heat dissipation cavity through the overflow port; The overflow chamber is also provided with a first return port, and the coolant distribution unit is provided with a second return port, with the first return port and the second return port connected together.
3. The immersion liquid cooling device according to claim 2, characterized in that, The coolant distribution unit abuts against the second partition, the second return port is located on the side of the coolant distribution unit facing the second partition, and the first return port is directly opposite the second return port.
4. The immersion liquid cooling device according to claim 3, characterized in that, The second partition has a sealing ring surrounding the first return port on the side facing the coolant distribution unit.
5. The immersion liquid cooling device according to claim 1, characterized in that, The first check structure includes a first housing, a first check plate, and a first check spring; The first housing has a first cavity inside, and the first housing has a first opening and a second opening communicating with the first cavity at both ends along the first direction, and the end of the first housing with the first opening is connected to the coolant distribution unit. The first check plate and the first check spring are disposed in the first cavity, and the first check plate is connected to the side of the first check spring facing the first opening; The first check plate can move relative to the first housing along the first direction. When the first check spring is in the initial state, the first check plate abuts against the inner wall of the first housing. When the first check spring is in the compressed state, there is a gap between the first check plate and the inner wall of the first housing.
6. The immersion liquid cooling device according to claim 5, characterized in that, The first housing passes through the connection hole, and one end of the first housing with the second opening is located in the first cavity, and the second opening is provided with a filter module.
7. The immersion liquid cooling device according to claim 5 or 6, characterized in that, The first housing has an external thread at one end where the first opening is located, and the first housing is threadedly engaged with the coolant distribution unit through the external thread.
8. The immersion liquid cooling device according to claim 1, characterized in that, The bottom of the coolant distribution unit is also provided with a liquid inlet and a liquid outlet. The liquid inlet and liquid outlet are provided with a second check structure. When the second check structure is in the first state, the liquid inlet and liquid outlet are in the closed state. When the second check structure is in the second state, the liquid inlet and liquid outlet are in the open state.
9. The immersion liquid cooling device according to claim 8, characterized in that, The second check structure includes a second housing, a second check plate, and a second check spring; The second housing has a second cavity inside. The second housing has a third opening and a fourth opening communicating with the second cavity at both ends along the first direction. The end of the second housing with the third opening is connected to the liquid inlet and exhaust outlet. The second check plate and the second check spring are disposed in the second cavity, and the second check plate is connected to the side of the second check spring near the fourth opening; The second check spring can move relative to the second housing along the first direction. When the second check spring is in the initial state, the second check plate abuts against the inner wall of the second housing. When the second check spring is in the compressed state, there is a gap between the second check plate and the inner wall of the second housing.
10. The immersion liquid cooling device according to claim 1, characterized in that, The cover plate is equipped with a transparent viewing window and a monitoring screen.