Anti-splashing device and liquid cooling system

By designing a splash-proof device in the liquid cooling device, and using the cooperation of multi-stage foldable doors and elastic parts, the problem of coolant spraying when the joints of the liquid cooling device are separated is solved, and effective protection and convenient operation of the equipment are achieved.

CN223053315UActive Publication Date: 2025-07-01SHENZHEN ENVICOOL SMART CONNECTION TECH CO LTD
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Patent Information

Application Number
CN202421543964.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-28
Publication Date
2025-07-01
Estimated Expiration
2034-06-28

AI Technical Summary

Technical Problem

Existing liquid-cooling devices may cause coolant to eject when the connectors are separated, damaging electronic components on the equipment.

Method used

A splash-proof device is designed, including a housing, a multi-stage foldable door and an elastic member, to avoid the splash of coolant by automatically opening and closing of the multi-stage foldable door.

Benefits of technology

It effectively reduces the risk of coolant spraying onto the equipment, ensures stable operation of the equipment, and is convenient to operate.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an anti-splashing device which comprises a shell, a multi-stage foldable door and an elastic piece, a through hole is formed in the shell, one side of the multi-stage foldable door is hinged to the interior of the shell, and the elastic piece is connected with the multi-stage foldable door and the shell. Under the action of the elastic force of the elastic piece, the multi-stage foldable door can abut against the inner wall of the shell so as to close the through hole, and the multi-stage foldable door is turned over in the direction away from the through hole under the action of the external force so as to open the through hole. In the specific application process, the butt joint structure of the two connectors can be contained in the shell, and when cooling liquid is splashed at the connectors, the cooling liquid can be limited in the shell, so that the cooling liquid is prevented from leaking to equipment needing to be cooled. When the tail end of the multi-stage foldable door makes contact with the connector in the shell, the tail end of the multi-stage foldable door can rotate reversely to avoid, and by means of the multi-stage foldable door, the risk that due to the fact that the height space of the shell is limited, the shell is blocked and cannot rotate during opening can be avoided.
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Description

Technical Field

[0001] The utility model relates to the technical field of liquid cooling, and particularly relates to a splash-proof device and a liquid cooling system. Background Art

[0002] Some electronic devices generate a large amount of heat during operation. To ensure their stable operation, heat dissipation treatment is required. For example, a server generates a large amount of heat during operation. Currently, a liquid cooling device can be used to cool it to ensure the stable operation of the server.

[0003] The working principle of the existing liquid cooling device is as follows: The coolant is transported to the liquid cooling part through the liquid cooling pipeline. The liquid cooling part exchanges heat with the device, and the coolant after heat exchange then flows out of the liquid cooling part. In this way, the cooling of the device can be achieved through circulation.

[0004] In the process of implementing the present invention, the inventor found that there are at least the following problems in the prior art:

[0005] Since the liquid cooling device has a structure that realizes pipeline docking through joints, when the joints are separated, there may be a risk of liquid spraying. If the liquid sprays onto the device, it will have an adverse impact on the electronic components on the device.

[0006] Therefore, how to provide a splash-proof device is a technical problem that those skilled in the art need to solve currently. Summary of the Utility Model

[0007] The purpose of the utility model is to provide a splash-proof device and a liquid cooling system, which can effectively reduce the risk of coolant spraying onto the device.

[0008] To achieve the above purpose, the utility model provides the following technical solutions:

[0009] A splash-proof device includes: a housing, a multi-stage foldable door, and an elastic member. A through hole is provided on the housing. One side of the multi-stage foldable door is hinged inside the housing. The elastic member is connected to the multi-stage foldable door and the housing. Under the action of its elastic force, the elastic member presses the multi-stage foldable door against the inner wall of the housing to close the through hole, and the multi-stage foldable door flips in the direction away from the through hole under the action of an external force to open the through hole.

[0010] In some technical solutions, the multi-stage foldable door includes a first door panel and a second door panel. One side of the first door panel is hinged to the inside of the housing through a first hinge shaft. The elastic member is a first torsion spring, and the first torsion spring is sleeved on the first hinge shaft. Two ends of the first torsion spring are respectively connected to the housing and the first door panel. The second door panel is hinged to one side of the first door panel away from the first hinge shaft through a second hinge shaft, and the second door panel and the first door panel are also connected through a second torsion spring.

[0011] In some technical solutions, the second torsion spring is installed on the second hinge shaft, the first door panel or the second door panel.

[0012] In some technical solutions, an installation post is provided on one side of the first door panel facing away from the through hole. The second torsion spring is sleeved on the installation post. A fixing portion is provided on one side of the second door panel facing away from the through hole. One end of the second torsion spring is connected to the first door panel, and the other end is connected to the fixing portion.

[0013] In some technical solutions, the anti-splash device further includes a pressing rod and a connecting rod. Two ends of the connecting rod are respectively hinged to the pressing rod and the multi-stage foldable door. A guiding hole is further provided on one side of the housing where the through hole is provided. A guiding rod extending out of the guiding hole is provided on the pressing rod. The guiding rod can move relative to the guiding hole. When the guiding rod is externally squeezed, it will drive the multi-stage foldable door to flip towards the inside of the housing through the connecting rod.

[0014] In some technical solutions, a plurality of the through holes are provided on the housing, and a plurality of groups of foldable door assemblies corresponding to the through holes one by one are provided inside the housing. Each group of foldable door assemblies includes two relatively arranged multi-stage foldable doors, and each multi-stage foldable door is respectively hinged to the pressing rod through a connecting rod.

[0015] In some technical solutions, a drain port is provided on one side of the bottom of the housing, and the drain port is communicated with the inner cavity of the housing.

[0016] In some technical solutions, a protruding portion extending outwards is provided on one side of the housing, and the drain port is provided at the bottom of the protruding portion.

[0017] In some technical solutions, the housing includes a bottom case and an upper cover. The upper cover is detachably connected to the bottom case. The through hole is provided on the upper cover. One end of the multi-stage foldable door is hinged to one side wall of the bottom case, and the other end is hinged to one side wall of the upper cover.

[0018] A liquid cooling system includes the anti-splash device according to any one of the above.

[0019] Compared with the prior art, the above technical solution has at least the following advantages:

[0020] When installing the anti-splash device provided by the present utility model, the joint of the server coolant delivery pipe moves towards the direction of the multi-stage foldable door. Under the pressure action of the joint of the server coolant delivery pipe, the multi-stage foldable door can be gradually opened until it reaches the docking position with the joint of the coolant delivery pipe of the manifold. At this time, the docking structure of the two joints will be accommodated in the housing. When coolant splashes at the joint, the coolant will be restricted within the housing to prevent the coolant from leaking onto the equipment to be cooled.

[0021] After the joint of the server coolant delivery pipe is pulled out from the coolant delivery pipe of the manifold, the multi-stage foldable door automatically resets under the elastic force of the elastic member to close the through hole, thereby achieving the purpose of preventing the coolant from spraying out of the through hole. Moreover, when opening the through hole, it can be achieved by relying on the movement of the joint of the server coolant delivery pipe without any other additional operations. Therefore, it has the advantage of convenient operation.

[0022] In addition, since a multi-stage foldable door is adopted, when the end of the multi-stage foldable door contacts the joint of the coolant delivery pipe of the manifold in the housing, the end of the multi-stage foldable door will rotate in the reverse direction to avoid. As the joint of the server coolant delivery pipe continues to extend, the multi-stage foldable door will continue to rotate until the end of the multi-stage foldable door moves past the joint of the coolant delivery pipe of the manifold. At this time, the two joints can be docked, that is, by adopting a multi-stage foldable door, the risk of being unable to rotate due to the obstruction of touching the joint of the coolant delivery pipe of the manifold when opening due to the limited height space of the housing can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0024] Figure 1 Schematic diagram of the three-dimensional structure of an anti-splash device provided by a specific embodiment of the present utility model;

[0025] Figure 2 Exploded structure diagram of an anti-splash device provided by a specific embodiment of the present utility model;

[0026] Figure 3 Structure diagram of the anti-splash device with the upper cover removed when in the open state;

[0027] Figure 4 Schematic structural diagram after removing the upper cover when the splash-proof device is in the closed state;

[0028] Figure 5 Front view structural diagram after removing the upper cover when the splash-proof device is in the open state.

[0029] The reference numerals are as follows:

[0030] 10 - housing, 101 - through hole, 102 - guiding hole, 103 - drain opening, 11 - bottom shell, 111 - front plate, 112 - bottom plate, 113 - lower left plate, 114 - lower right plate, 12 - upper cover, 121 - rear plate, 122 - top plate, 123 - upper left plate, 124 - upper right plate;

[0031] 20 - multi-stage foldable door, 21 - elastic member, 22 - first door panel, 221 - installation part, 222 - installation post, 23 - second door panel, 231 - fixing part, 24 - second torsion spring, 25 - first hinge shaft, 26 - second hinge shaft;

[0032] 30 - pressure bar, 31 - cross bar, 32 - vertical bar;

[0033] 40 - connecting rod;

[0034] 50 - joint of the coolant delivery pipeline of the water distributor. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Please refer to Figures 1 to 5, an anti-splash device provided by an embodiment of the present utility model includes: a housing 10, a multi-stage foldable door 20, and an elastic member 21. A through hole 101 is provided on the housing 10. One side of the multi-stage foldable door 20 is hinged inside the housing 10. For example, a through hole 101 for the joint of the first pipeline to penetrate can be provided on the top of the housing 10 (referring to the orientation shown in the attached drawing), and an installation hole for the joint of the second pipeline to penetrate can be provided on the bottom of the housing 10 (referring to the orientation shown in the attached drawing). The second pipeline can also be pre-fixed in the installation hole. The elastic member 21 is connected to the multi-stage foldable door 20 and the housing 10. Under the action of its elastic force, the elastic member 21 can press the multi-stage foldable door 20 against the inner wall of the housing 10 to close the through hole 101, and the multi-stage foldable door 20 flips in the direction away from the through hole 101 under the action of an external force to open the through hole 101.

[0037] In specific applications, the joint of the second pipeline can be passed through the installation hole and extended into the housing 10. The first pipeline can be selected as the server coolant delivery pipeline, and the second pipeline can be selected as the manifold coolant delivery pipeline. During installation, the joint of the server coolant delivery pipeline moves towards the multi-stage foldable door 20. Under the pressure of the joint of the server coolant delivery pipeline, the multi-stage foldable door 20 can be gradually opened until it reaches the docking position with the joint 50 of the manifold coolant delivery pipeline. At this time, the docking structure of the two joints will be accommodated in the housing 10. When coolant splashes at the joint, the coolant will be restricted within the housing 10 to prevent the coolant from leaking onto the equipment to be cooled. After the joint of the server coolant delivery pipeline is pulled out from the manifold coolant delivery pipeline, the multi-stage foldable door 20 automatically resets under the elastic force of the elastic member 21 to close the through hole 101, thereby achieving the purpose of preventing the coolant from spraying out of the through hole 101. Moreover, when opening the through hole 101, it can be achieved by relying on the movement of the joint of the server coolant delivery pipeline without any additional operations, so it has the advantage of convenient operation. In addition, since the multi-stage foldable door 20 is used, when the end of the multi-stage foldable door 20 contacts the joint 50 of the manifold coolant delivery pipeline inside the housing 10, the end of the multi-stage foldable door 20 will rotate in the reverse direction to avoid it. As the joint of the server coolant delivery pipeline continues to extend, the multi-stage foldable door 20 will continue to rotate until the end of the multi-stage foldable door 20 moves past the joint 50 of the manifold coolant delivery pipeline. At this time, the two joints can be docked, that is, by using the multi-stage foldable door 20, the risk of being unable to rotate due to the obstruction of touching the joint 50 of the manifold coolant delivery pipeline when opening can be avoided due to the limited height space of the housing 10. The joints of the first pipeline and the second pipeline are generally blind plug joints, and the two joints are used in pairs.

[0038] In some embodiments, such as Figures 3 to 5As shown, the multi-stage foldable door 20 includes a first door panel 22 and a second door panel 23. One side of the first door panel 22 is hinged to the inside of the housing 10 through a first hinge shaft 25. The elastic member 21 is a first torsion spring, and the first torsion spring is sleeved on the first hinge shaft 25. The two ends of the first torsion spring are respectively connected to the housing 10 and the first door panel 22. For example, an installation portion 221 can be provided on the back surface of the first door panel 22. One end of the first torsion spring is connected to the installation portion 221, and the other end of the first torsion spring is hooked inside the housing 10. The second door panel 23 is hinged to the side of the first door panel 22 away from the first hinge shaft 25 through a second hinge shaft 26. The second door panel 23 is also connected to the first door panel 22 through a second torsion spring 24, and the second door panel 23 can rotate relative to the first door panel 22 around the second hinge shaft 26. When the joint of the server coolant delivery pipe is not connected, under the torsion of the first torsion spring, the first door panel 22 is pressed against the inner top surface of the housing 10 (with the orientation shown in the attached drawing as a reference), and the second door panel 23 is also pressed against the inner top surface of the housing 10 under the action of the second torsion spring 24. When the joint of the server coolant delivery pipe is connected, if the second door panel 23 contacts the joint 50 of the manifold coolant delivery pipe, as the joint of the server coolant delivery pipe continues to extend, the second door panel 23 will rotate in the reverse direction until the second door panel 23 moves past the joint 50 of the manifold coolant delivery pipe, so that the two joints can be docked. Therefore, by the way that the second door panel 23 can rotate relative to the first door panel 22, the problem that the joint inside the housing 10 interferes with the multi-stage foldable door 20 and the joint docking cannot be achieved can be effectively avoided. Therefore, the advantage of the multi-stage foldable door 20 is to avoid the risk of touching the top end of the joint inside the housing 10 when the door is opened due to the limited height space of the housing 10. In addition, the foldability of the multi-stage foldable door 20 can greatly reduce the space required by the housing 10, thereby reducing the occupation of the internal space of the liquid-cooled cabinet.

[0039] In some embodiments, the second torsion spring 24 is installed on the second hinge shaft 26, the first door panel 22 or the second door panel 23. For example, when the second torsion spring 24 is installed on the first door panel 22, an installation post 222 can be provided on the side of the first door panel 22 away from the through hole 101. The second torsion spring 24 is sleeved on the installation post 222. The installation post 222 is preferably an L-shaped structure, and the installation post 222 can be integrally formed on the first door panel 22. The second torsion spring 24 is sleeved on the column parallel to the first door panel 22 on the installation post 222. A fixing portion 231 is provided on the side of the second door panel 23 away from the through hole 101. One end of the second torsion spring 24 is connected to the first door panel 22, and the other end is connected to the fixing portion 231. By arranging the second torsion spring 24 on the side of the first door panel 22 away from the through hole 101, the tightness of the contact between the multi-stage foldable door 20 and the inner top surface of the housing 10 can be effectively ensured.

[0040] In some embodiments, such asFigure 2 and Figure 3 As shown in Figure 3 , the anti - splash device further includes a pressure rod 30 and a connecting rod 40. The two ends of the connecting rod 40 are respectively hinged to the pressure rod 30 and the multi - stage foldable door 20. For example, the connecting rod 40 is located below the multi - stage foldable door 20 in the closed state. Specifically, a hinge shaft can be provided on one side of the lower surface of the first door panel 22 of the multi - stage foldable door 20. The hinge shaft is parallel to the plane where the first door panel 22 is located. One end of the connecting rod 40 is hinged to the hinge shaft, and the other end of the connecting rod 40 is hinged to the structure of the pressure rod 30 located below the multi - stage foldable door 20. To ensure the smooth movement of the pressure rod 30 relative to the housing 10, a guide hole 102 is further provided on one side of the housing 10 where the through - hole 101 is provided. A guide rod extending out of the guide hole 102 is provided on the pressure rod 30, and the guide rod can move relative to the guide hole 102. When the guide rod is externally squeezed, it will drive the multi - stage foldable door 20 to flip towards the inside of the housing 10 through the connecting rod 40. For example, during the docking process of two pipelines, the server can move towards the direction of the housing 10. When the server contacts the pressure rod 30, as the server continues to push forward, the pressure rod 30 will be pushed into the housing 10. During this process, the pressure rod 30 will drive the multi - stage foldable door 20 to open the through - hole 101 through the connecting rod 40. At the same time, the joint of the server coolant delivery pipeline will extend into the housing 10 from the through - hole 101 to dock with the joint 50 of the coolant delivery pipeline of the manifold in the housing 10. When the server moves away from the housing 10, the two joints separate. At this time, the two joints are still inside the housing 10. Therefore, the coolant that can be sprayed can be stored in the housing 10 to prevent the coolant from splashing on the server. After the joint of the server coolant delivery pipeline moves out of the housing 10, the multi - stage foldable door 20 resets under the action of the elastic member 21 to close the through - hole 101.

[0041] In some embodiments, a plurality of through - holes 101 are provided on the housing 10. For example Figure 1 as shown in Figure 1 , two through - holes 101 are provided on the upper surface of the housing 10. A plurality of sets of foldable door assemblies corresponding to the through - holes 101 one - to - one are provided in the housing 10. Each set of foldable door assemblies includes two relatively arranged multi - stage foldable doors 20, that is, the foldable door assembly is of an opposed - opening structure. Each multi - stage foldable door 20 is respectively hinged to the pressure rod 30 through a connecting rod 40. As Figure 4 shown in Figure 4 , the pressure rod 30 includes a cross - bar 31 and two vertical rods 32 located at both ends of the cross - bar 31. The cross - bar 31 and the vertical rods 32 are preferably integrally formed. The cross - bar 31 is located at the side position below the multi - stage foldable door 20. When the foldable door is opened, the cross - bar 31 will not block the rotation of the multi - stage foldable door 20, that is, the end of the multi - stage foldable door 20 can rotate to the position below the cross - bar 31. Two sets of foldable door assemblies are located between the two vertical rods 32. When the server pushes the two vertical rods 32, the opening of four multi - stage foldable doors 20 can be realized, so the operation is relatively convenient.

[0042] In some embodiments, a drain port 103 is provided on one side of the bottom of the housing 10. The drain port 103 is in communication with the inner cavity of the housing 10. That is, the coolant splashed at the two joints can be discharged from the drain port 103 on the side of the housing 10. A water receiving tank can be provided below the drain port 103, and then it can be uniformly discharged to a designated position through an external water receiving pipe and a water receiving tray. Among them, a protruding portion extending outward can be provided on one side of the housing 10. The protruding portion can be integrally formed with the housing 10, and the drain port 103 is provided at the bottom of the protruding portion.

[0043] In some embodiments, as Figure 1 and Figure 2 shown, the housing 10 includes a bottom case 11 and an upper cover 12. The upper cover 12 is detachably connected to the bottom case 11. For example, detachable connection methods such as snap connection or screws can be used for connection. The through hole 101 is provided on the upper cover 12, and the mounting hole is provided on the bottom case 11. One end of the multi-stage foldable door 20 is hinged to one side wall of the bottom case 11, and the other end is hinged to one side wall of the upper cover 12. For example, as shown in 1 and Figure 2 shown, the housing 10 is a cuboid hollow shell structure. The bottom case 11 includes a front plate 111, a bottom plate 112, a lower left plate 113, and a lower right plate 114. The upper cover 12 includes a rear plate 121, a top plate 122, an upper left plate 123, and an upper right plate 124. The through hole 101 and the guide hole 102 are both provided on the top plate 122. In addition, a positioning hole can be provided at the position between the two through holes 101 on the top plate 122. Correspondingly, a positioning pin corresponding to the positioning hole is provided on the server to ensure the accuracy of their positions. After the upper cover 12 is buckled on the bottom case 11, a cuboid hollow shell structure can be formed. The advantage of this structure is that it is convenient for both ends of the multi-stage foldable door 20 to be hinged on the front plate 111 and the rear plate 121 of the housing 10.

[0044] The embodiment of the present utility model also provides a liquid cooling system, which includes the anti-splash device provided in any one of the above embodiments, and also includes a coolant distribution and collection pipeline and a server coolant pipeline. The joints of the coolant distribution and collection pipeline and the joints of the server coolant pipeline penetrate into the housing for docking. The beneficial effects of the liquid cooling system can refer to the above anti-splash device, which will not be elaborated here.

[0045] It should be noted that the coolant delivery pipelines of the manifold include a supply main pipeline and a return main pipeline. The supply main pipeline and the return main pipeline can be respectively arranged in the liquid cooling cabinet in a vertically installed manner. The supply main pipeline and the return main pipeline respectively include a pipe body and a plurality of male end joints spaced apart on the pipe body (the male end joints have a self-sealing function, that is, when the male end joint is separated from the female end joint, the male end joint can cut off its own flow channel under the cooperation of the movable valve core and the sealing structure inside it). The pipe body can be used to connect the external liquid cooling pipeline to form a complete liquid cooling circulation loop, and the male end joint can be used to connect the female end joint of the aforementioned branch pipeline (which also has a self-sealing function). The function of the supply main pipeline is to distribute the low-temperature coolant transported from the external liquid cooling pipeline to each branch pipeline, and the branch pipeline transports the low-temperature coolant to the liquid cooling terminal (such as a cold plate) for cooling the equipment (such as a server) to meet the continuous heat dissipation requirements of the equipment. The function of the return main pipeline is to collect the high-temperature coolant flowing out from each liquid cooling terminal and transport it to the external liquid cooling pipeline to realize the return water of the liquid cooling system.

[0046] It should also be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0047] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0048] The above has introduced in detail an anti-splash device and a liquid cooling system provided by the present utility model. Specific examples are used herein to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A splash prevention device, characterized in that: include: A shell (10), a multi-stage foldable door (20) and an elastic member (21), wherein the shell (10) is provided with a through hole (101), one side of the multi-stage foldable door (20) is hinged in the shell (10), the elastic member (21) is connected to the multi-stage foldable door (20) and the shell (10), and the elastic member (21) presses the multi-stage foldable door (20) against the inner wall of the shell (10) under the action of its elastic force to close the through hole (101), and the multi-stage foldable door (20) flips in a direction away from the through hole (101) under the action of an external force to open the through hole (101).

2. The splash protection device according to claim 1, characterized in that: The multi-stage foldable door (20) comprises a first door panel (22) and a second door panel (23); one side of the first door panel (22) is hinged in the housing (10) via a first hinge shaft (25); the elastic member (21) is a first torsion spring; the first torsion spring is sleeved on the first hinge shaft (25); two ends of the first torsion spring are respectively connected to the housing (10) and the first door panel (22); the second door panel (23) is hinged to a side of the first door panel (22) away from the first hinge shaft (25) via a second hinge shaft (26); the second door panel (23) is also connected to the first door panel (22) via a second torsion spring (24).

3. The splash protection device according to claim 2, characterized in that: The second torsion spring (24) is mounted on the second hinge shaft (26), the first door panel (22) or the second door panel (23).

4. The splash protection device according to claim 3, characterized in that: A mounting column (222) is provided on the side of the first door panel (22) facing away from the through hole (101); the second torsion spring (24) is sleeved on the mounting column (222); a fixing portion (231) is provided on the side of the second door panel (23) facing away from the through hole (101); one end of the second torsion spring (24) is connected to the first door panel (22), and the other end is connected to the fixing portion (231).

5. The splash prevention device according to any one of claims 1 to 4, characterized in that: The splash prevention device further comprises a pressure rod (30) and a connecting rod (40), the two ends of the connecting rod (40) being hinged to the pressure rod (30) and the multi-stage foldable door (20) respectively, the shell (10) being provided with a guide hole (102) on one side of the through hole (101), the pressure rod (30) being provided with a guide rod extending from the guide hole (102), the guide rod being movable relative to the guide hole (102), and when the guide rod is squeezed by an external force, the multi-stage foldable door (20) is driven to flip toward the inside of the shell (10) through the connecting rod (40).

6. The splash protection device according to claim 5, characterized in that: The shell (10) is provided with a plurality of through holes (101), and the shell (10) is provided with a plurality of groups of foldable door assemblies corresponding one to one to the through holes (101), each group of the foldable door assemblies comprising two multi-stage foldable doors (20) arranged opposite to each other, and each of the multi-stage foldable doors (20) is hingedly connected to the pressure rod (30) via a connecting rod (40).

7. The splash protection device according to claim 1, characterized in that: A drainage port (103) is provided on one side of the bottom of the shell (10), and the drainage port (103) is communicated with the inner cavity of the shell (10).

8. The splash protection device according to claim 7, characterized in that: A protruding portion extending outward is provided on one side of the housing (10), and the drainage port (103) is provided at the bottom of the protruding portion.

9. The splash protection device according to claim 1, characterized in that: The housing (10) comprises a bottom shell (11) and an upper cover (12); the upper cover (12) is detachably connected to the bottom shell (11); the through hole (101) is provided on the upper cover (12); one end of the multi-stage foldable door (20) is hinged to a side wall of the bottom shell (11), and the other end is hinged to a side wall of the upper cover (12).

10. A liquid cooling system, characterized in that: The invention comprises the anti-splash device according to any one of claims 1 to 9.