Liquid collection device

Abstract

A liquid collection device, which relates to the technical field of cold-plate-type liquid cooling. The liquid collection device comprises a cold plate and a liquid collection tank. Specifically, the liquid collection tank is configured to be arranged at the periphery of a joint, which is connected to the cold plate, and the liquid collection tank is provided with a liquid collection port; the liquid collection port is arranged to face at least part of a pipeline assembly which is connected to the joint, and the liquid collection port covers positions where the joint and the at least part of the pipeline assembly are located, such that a liquid-cooling working medium leaking from the at least part of the pipeline assembly and from the junction of the joint and the cold plate can be collected into the liquid collection tank. The liquid collection device can collect liquids leaked at pipelines and the junction of the cold plate and the joint due to the factors of the structures themselves, connection defects, etc., thereby meeting requirements of a server for liquid leakage protection, and thus improving the operating safety of the server.

Description

Liquid collecting device

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on January 19, 2024, with application number 202420144179.7 and utility model name “A Liquid Collection Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of cold plate liquid cooling, and in particular to a liquid collecting device. Background Art

[0003] At present, with the development of server motherboard cooling technology, cold plate liquid cooling technology has become the mainstream cooling technology for servers.

[0004] In the existing system, the cold plate liquid cooling device includes a cold plate, a liquid guide pipe and a joint. The liquid guide pipe is connected to the cold plate through the joint to supply liquid cooling medium to the cold plate, so that the cold plate contacts the motherboard and other heat-generating components to achieve heat dissipation of the motherboard.

[0005] Typically, this connector is a pagoda connector, which inserts into the liquid-carrying tubing through a multi-stage pagoda structure and forms a sealed connection. However, due to inevitable defects in the product processing and installation process, there is still a risk of leakage. Furthermore, the liquid-carrying tubing itself also has a certain risk of leakage, which poses a significant threat to the server's hardware and data security. Currently, most solutions to prevent such leakage use a liquid storage cannula. This is achieved by installing a liquid storage cannula outside the liquid-carrying tubing and connector to store any leaks within the cannula.

[0006] However, in the process of implementing this application, the inventors discovered that the prior art has at least the following problems:

[0007] The installation of the liquid storage sleeve is complicated, and the direct connection of the liquid storage sleeve to the joint is prone to leakage. The leaked liquid will flow out of the liquid storage sleeve, resulting in poor leak prevention effect and failure to meet the leak prevention requirements of the server. In addition, due to the existence of internal pressure, when the leaked liquid stored in the liquid storage sleeve reaches a certain amount, the liquid storage sleeve will also have a certain risk of leakage.

[0008] Therefore, it is necessary for those skilled in the art to provide a liquid collecting device that can collect leaked liquid generated by the pipelines and their connections at the cold plate position to meet the leakage prevention requirements of the server.

[0009] Summary of the Invention

[0010] The purpose of the present application is to provide a liquid collecting device that can collect leaked liquid generated by the pipelines and their connections at the cold plate position to meet the leakage prevention requirements of the server.

[0011] To achieve the above-mentioned purpose, the present application provides a liquid collection device, including a cold plate and a liquid collection tank, which is used to be arranged on the outer periphery of the joint connected to the cold plate. The liquid collection tank is provided with a liquid collection port, which is arranged toward at least part of the pipeline assembly connected to the joint, and the liquid collection port covers the joint and at least part of the pipeline assembly, so that liquid cooling medium leaked from at least part of the pipeline assembly and the connection between the joint and the cold plate can be collected in the liquid collection tank.

[0012] In some embodiments, the liquid collecting tank is provided separately from the cold plate, and the liquid collecting tank is provided outside the cold plate.

[0013] In some embodiments, the liquid collecting device further comprises a ring, which is disposed around the outer circumference of the joint, and the ring and the cold plate together form a liquid collecting tank.

[0014] In some embodiments, the cold plate includes a heated plate and a cover plate arranged on the heated plate, the ring is arranged around the cover plate, and a sealing ring is provided between the ring and the cover plate to seal the gap between the ring and the cover plate, the outer wall of the cover plate is provided with a mounting groove, the sealing ring is installed in the mounting groove, and the depth of the mounting groove is less than the thickness of the sealing ring.

[0015] In some embodiments, the liquid collecting device further comprises a liquid collecting pan, which is arranged on the cold plate and has a through hole for the joint to pass through;

[0016] The liquid collecting tray includes an annular protrusion structure, which protrudes in a direction close to at least a portion of the pipeline assembly to form a liquid collecting trough;

[0017] The liquid collecting tray further comprises a connecting plate, the annular protrusion structure is arranged on the connecting plate, and the connecting plate is connected to the cold plate.

[0018] In some embodiments, the pipeline assembly includes a liquid guiding pipeline and a leak-proof outer tube located outside the liquid guiding pipeline, and the inner wall of the leak-proof outer tube is provided with a leak-proof detection band.

[0019] In some embodiments, the cold plate includes a heated plate and a cover plate disposed on the heated plate, and the liquid collecting tank is a groove disposed on the cover plate.

[0020] In some embodiments, a guide structure is also included. The guide structure is arranged on the joint and cooperates with at least part of the pipeline assembly. The guide structure extends into the liquid collecting tank, so that the leaked liquid flowing out of at least part of the pipeline assembly is guided by the guide structure and flows into the liquid collecting tank.

[0021] In some embodiments, an outer cover is further included, which is arranged on the liquid collecting tank to prevent the liquid cooling medium in the liquid collecting tank from leaking out.

[0022] In some embodiments, a liquid pumping mechanism is further included, which is connected to the liquid collecting tank to extract the liquid cooling medium in the liquid collecting tank. The liquid pumping mechanism includes:

[0023] a liquid extraction pipe, one end of which extends into the liquid collecting tank;

[0024] A liquid extraction component connected to a liquid extraction pipe to extract the liquid cooling medium in the liquid collecting tank through the liquid extraction pipe;

[0025] A liquid leakage detection component is provided in the liquid collecting tank to detect the amount of liquid cooling medium in the liquid collecting tank;

[0026] The control component is electrically connected to the leakage detection component and the liquid extraction component to control the liquid extraction component to open and extract the liquid cooling medium in the liquid collection tank when the amount of liquid cooling medium in the liquid collection tank exceeds the warning amount.

[0027] In contrast to the above background technology, the liquid collection device provided in the embodiments of the present application includes a cold plate, and further includes a liquid collection tank. Specifically, the liquid collection tank is arranged on the periphery of a joint connected to the cold plate, and the liquid collection tank is provided with a liquid collection port, which is arranged toward at least a portion of the pipeline assembly connected to the joint, and the liquid collection port covers the location of the joint and at least a portion of the pipeline assembly, so that liquid cooling medium leaking from at least a portion of the pipeline assembly and the connection between the joint and the cold plate can be collected in the liquid collection tank.

[0028] It can be seen that, on the one hand, the liquid collection port of the liquid collection tank can cover the joint connected to the cold plate and at least part of the pipeline assembly, so that the liquid cooling medium leaked from at least part of the pipeline assembly can be collected by the liquid collection tank, thereby ensuring that the leakage above the cold plate will not leak out; on the other hand, the liquid collection tank is arranged on the periphery of the joint. Even if the liquid cooling medium leaks at the connection position between the joint and the cold plate, under the action of the internal pressure of the joint and the cold plate, the leaked liquid cooling medium will eventually enter the liquid collection tank, thereby ensuring that the leakage at the location of the cold plate will not leak out. Based on this, the liquid collection device provided in the embodiment of the present application can collect leakage caused by structural factors, connection defects, etc. in the pipeline and the connection position between the cold plate and the joint, so as to meet the server's requirements for leakage protection and thereby improve the safety of server operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0030] FIG1 is a schematic structural diagram of a liquid collecting device in an embodiment of the present application;

[0031] FIG2 is a top view of the liquid collecting device shown in FIG1 ;

[0032] FIG3 is a cross-sectional view of the liquid collecting device shown in FIG1 ;

[0033] FIG4 is a schematic diagram of the assembled outer cover of the liquid collecting device in an embodiment of the present application.

[0034] in:

[0035] 1-cold plate, 11-heating plate, 12-cover plate, 2-liquid collecting tank, 21-liquid collecting port, 3-connector, 31-flow guiding structure, 4-pipeline assembly, 41-flow guiding pipeline, 42-leak-proof outer tube, 5-encirclement, 6-outer cover, 7-liquid extraction mechanism. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0037] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0038] It should be noted that the directional terms such as "upper end, lower end, left side, right side" described below are all defined based on the drawings in the specification.

[0039] Please refer to Figures 1 to 4, Figure 1 is a structural schematic diagram of the liquid collecting device in an embodiment of the present application; Figure 2 is a top view of the liquid collecting device shown in Figure 1; Figure 3 is a cross-sectional view of the liquid collecting device shown in Figure 1; Figure 4 is a schematic diagram of the outer cover of the liquid collecting device in an embodiment of the present application after assembly.

[0040] The liquid collection device provided in the embodiment of the present application includes a cold plate 1, which includes a heated plate 11 and a cover plate 12. The heated plate 11 and the cover plate 12 are connected to form a liquid cooling chamber for accommodating liquid cooling medium. The heated plate 11 is used to contact the working parts of the server, such as the motherboard, to achieve heat dissipation for the motherboard.

[0041] Furthermore, the liquid collection device also includes a liquid collection tank 2. Specifically, the liquid collection tank 2 is used to be arranged on the periphery of the joint 3 connected to the cold plate 1. The liquid collection tank 2 is provided with a liquid collection port 21. The liquid collection port 21 is arranged toward at least a portion of the pipeline assembly 4 connected to the joint 3. In addition, the liquid collection port 21 covers the location where the joint 3 and at least a portion of the pipeline assembly 4 are located, so that liquid cooling medium leaking from at least a portion of the pipeline assembly 4 and the connection between the joint 3 and the cold plate 1 can be collected in the liquid collection tank 2.

[0042] Among them, the pipeline assembly 4 includes an internal liquid guiding pipeline 41 and a leak-proof outer tube 42 located outside the liquid guiding pipeline 41. A accommodating cavity for storing leaked liquid is formed between the leak-proof outer tube 42 and the liquid guiding pipeline 41. In addition, the inner wall of the leak-proof outer tube 42 is also provided with a leak-proof detection belt.

[0043] It should be noted that the leak-proof outer tube 42 can be an integral tube so as to be directly sleeved on the liquid guiding line 41. However, this will make the leak-proof detection tape inside the leak-proof outer tube 42 inconvenient to install. Based on this, it is preferred that the leak-proof outer tube 42 include a transparent tape rolled into a tubular shape and a self-sealing strip connecting the transverse edges of the transparent tape along the extension direction, so as to constrain the transparent tape into a tubular structure through the self-sealing strip. Of course, in addition to the above-mentioned self-sealing strips, the connection of the transverse edges of the transparent tape can also be other ways, such as snapping, gluing, etc. It should be emphasized that since the leaked liquid is generally in a low-pressure state after entering the leak-proof outer tube 42, the connection strength of the above-mentioned connection method can meet the needs. Of course, the transparent tape can also be a non-transparent tape, but the transparent tape is easier to observe.

[0044] Preferably, a liquid collecting tank 2 is provided below at least part of the piping assembly 4 connected to the joint 3, so that the liquid collecting tank 2 can be used to receive the liquid cooling medium leaked from at least part of the piping assembly 4, and the liquid collecting tank 2 can be used to collect the liquid cooling medium leaked from the connection between the joint 3 and the cold plate 1.

[0045] It should be noted that the liquid-cooling medium leaked from at least part of the pipeline assembly 4 mainly includes two parts. One part is the liquid-cooling medium leaked from the crack of the leak-proof outer tube 42 (cracks formed due to its own structure or connection defects, etc.), and this part of the liquid-cooling medium directly drips into the liquid collecting tank 2; the other part is the liquid-cooling medium leaked from the end opening of the leak-proof outer tube 42 (for example, leakage caused by connection defects between the liquid guide pipe 41 and the joint 3). Since there is a gap between the end of the leak-proof outer tube 42 and the joint 3, the liquid-cooling medium leaked from the end opening of the leak-proof outer tube 42 can flow along the outer wall of the joint 3 to the liquid collecting tank 2.

[0046] It can be seen that, on the one hand, the liquid collecting port 21 of the liquid collecting tank 2 can cover the joint 3 and at least part of the pipeline assembly 4 connected to the cold plate 1. In this way, the liquid cooling medium leaked from at least part of the pipeline assembly 4 can be collected by the liquid collecting tank 2, thereby ensuring that the leakage at the position above the cold plate 1 will not leak out; on the other hand, the liquid collecting tank 2 is arranged on the periphery of the joint 3. Even if the liquid cooling medium leaks at the connection position between the joint 3 and the cold plate 1, under the action of the internal pressure of the joint 3 and the cold plate 1, the leaked liquid cooling medium will eventually enter the liquid collecting tank 2, thereby ensuring that the leakage at the position of the cold plate 1 will not leak out.

[0047] In this way, the liquid collection device provided in the embodiment of the present application can collect leakage caused by structural factors, connection defects, etc. in the pipeline and the connection position between the cold plate 1 and the joint 3, so as to meet the server's requirements for leakage protection and thereby improve the safety of the server operation.

[0048] As can be seen from the above, in order to facilitate liquid collection, the above-mentioned liquid collection tank 2 can be set outside the cold plate 1, such as above the cold plate 1, or inside the cold plate 1, such as inside the cover plate 12 of the cold plate 1.

[0049] In some embodiments, the liquid collecting tank 2 is provided separately from the cold plate 1 , and the liquid collecting tank 2 is provided outside the cold plate 1 .

[0050] It is understood that the sump 2 is provided separately from the cold plate 1. That is, a separate structure with the sump 2 can be provided on the cold plate 1. This arrangement does not affect the structure of the cold plate 1, and the cold plate 1 can be mass-produced independently. Furthermore, the separate arrangement has the advantage that if the sump 2 is damaged or needs to be replaced, it can be directly replaced without disassembling the cold plate 1, greatly improving assembly and disassembly efficiency.

[0051] In this embodiment, the liquid collecting tank 2 can be formed by both the liquid collecting structure and the cold plate 1, or can be formed by a single liquid collecting structure, as described below:

[0052] When the liquid collecting tank 2 is formed by the liquid collecting structure and the cold plate 1 , the liquid collecting device further includes a ring 5 . The ring 5 is arranged around the outer periphery of the joint 3 . The ring 5 and the cold plate 1 together form the liquid collecting tank 2 .

[0053] Specifically, the ring 5 can be positioned around the cover plate 12. To ensure a tight seal between the ring 5 and the cover plate 12, a sealing ring is provided between the ring 5 and the cover plate 12 to seal the gap between them. For example, a mounting groove can be provided on the outer wall of the cover plate 12, into which the sealing ring is mounted, with the depth of the groove being less than the thickness of the sealing ring. This allows the sealing ring to be compressed due to its elasticity once installed, thereby sealing the gap between the ring 5 and the cover plate 12.

[0054] In this case, the cover plate 12 of the cold plate 1 serves as the bottom surface of the liquid collecting tank 2 , and the enclosure 5 is a closed-loop fence structure serving as the side surface of the liquid collecting tank 2 , thereby forming a liquid collecting tank 2 capable of collecting leaked liquid.

[0055] When the liquid collecting tank 2 is formed by a separate liquid collecting structure, the liquid collecting device also includes a liquid collecting pan, which is arranged on the cold plate 1. The liquid collecting pan is provided with a through hole for the connector 3 to pass through. The connector 3 is connected to the cold plate 1 after passing through the through hole. At the same time, the liquid collecting pan includes an annular protrusion structure, which protrudes in a direction close to at least part of the pipeline assembly 4 to form the liquid collecting tank 2.

[0056] On the basis of the above, the liquid collecting tray further comprises a connecting plate, the annular protrusion structure is provided on the connecting plate, and the connecting plate is connected to the cold plate 1. The connecting plate and the cold plate 1 can be connected by detachable connecting parts (screws or bolts).

[0057] In this case, the connecting plate serves as the bottom surface of the liquid collecting tank 2, and the annular protrusion structure is a closed-loop fence structure, serving as the side surface of the liquid collecting tank 2, thereby forming the liquid collecting tank 2 capable of collecting leaked liquid.

[0058] In some embodiments, the liquid collecting tank 2 and the cold plate 1 are an integrated structure, and the liquid collecting tank 2 is disposed inside the cold plate 1 .

[0059] Specifically, the cold plate 1 includes a heated plate 11 and a cover plate 12 disposed on the heated plate 11. The cover plate 12 is provided with a recessed area or groove that is recessed away from at least a portion of the pipe assembly 4. Thus, the liquid collection tank 2 can be a groove disposed on the cover plate 12. The gap between the connector 3 and the cold plate 1 can communicate with the groove, allowing any liquid coolant leaking from the gap between the connector 3 and the cold plate 1 to flow into the groove, ensuring that no liquid leaks out and affects the safe operation of the server's working components.

[0060] In order to facilitate the diversion of the liquid cooling medium leaking from the end opening of the leak-proof outer tube 42, the liquid collecting device also includes a diversion structure 31. The diversion structure 31 is arranged on the joint 3 and cooperates with at least part of the pipeline assembly 4 (for the case where the pipeline assembly 4 is set on one side of the joint 3, the diversion structure 31 and the pipeline assembly 4 are located on the same side of the joint 3). The diversion structure 31 extends into the liquid collecting tank 2, so that the leaked liquid flowing out from the end opening of the leak-proof outer tube 42 is guided by the diversion structure 31 and then flows into the liquid collecting tank 2.

[0061] It is understandable that, due to the gap between the end of the leak-proof outer tube 42 and the joint 3, the liquid cooling medium leaking from the end opening of the leak-proof outer tube 42 can flow along the outer wall of the joint 3 into the liquid collecting tank 2. To this end, a guide structure 31 is provided on the outer wall of the joint 3. The guide structure 31 can be a guide groove, which can be a linear structure or a curved structure, provided that it can ensure that the leaked liquid flowing out of the end opening of the leak-proof outer tube 42 is guided into the liquid collecting tank 2.

[0062] In order to prevent the leaked liquid in the liquid collecting tank 2 from leaking out, the liquid collecting device further includes an outer cover 6, which is arranged on the liquid collecting tank 2 to prevent the liquid cooling medium in the liquid collecting tank 2 from leaking out.

[0063] The outer cover 6 can be connected to the top of the liquid collecting tank 2 through a detachable connecting component (screws, bolts, etc.). The outer cover 6 can cover the liquid collecting port 21 to prevent the liquid cooling medium in the liquid collecting tank 2 from leaking out of the liquid collecting port 21.

[0064] Of course, the outer cover 6 is provided with slots for the pipe assembly 4 to pass through, so as to facilitate the connection between the pipe assembly 4 and the cold plate 1 .

[0065] In order to further meet the server leakage protection requirements, the liquid collection device also includes a liquid pumping mechanism 7, which is connected to the liquid collection tank 2. The liquid pumping mechanism 7 is used to extract the liquid cooling medium in the liquid collection tank 2 and concentrate the liquid cooling medium in the liquid collection structure outside the cold plate 1 to prevent the liquid cooling medium in the liquid collection tank 2 from exceeding the warning amount.

[0066] Specifically, the liquid extraction mechanism 7 includes a liquid extraction pipe, a liquid extraction assembly, a liquid leakage detection component, and a control component. One end of the liquid extraction pipe extends into the liquid collection tank 2. The liquid extraction assembly is connected to the liquid extraction pipe, and the liquid extraction assembly extracts the liquid cooling medium in the liquid collection tank 2 through the liquid extraction pipe. The liquid leakage detection component is provided in the liquid collection tank 2 to detect the amount of liquid cooling medium in the liquid collection tank 2. The control component is electrically connected to the liquid leakage detection component and the liquid extraction assembly. The control component is used to control the liquid extraction assembly to open and extract the liquid cooling medium in the liquid collection tank 2 into the liquid collection structure outside the cold plate 1 when the amount of liquid cooling medium in the liquid collection tank 2 exceeds the warning amount.

[0067] That is to say, by adopting the above-mentioned liquid pumping mechanism 7, the liquid cooling medium in the liquid collecting tank 2 can be pumped out when the amount of the liquid cooling medium in the liquid collecting tank 2 reaches a certain value, thereby facilitating the protection of the server equipment.

[0068] In some embodiments, the leakage detection element can be a leakage detection sensor, which can be a sheet-like structure. The sheet-like structure of the leakage detection element entirely covers the bottom surface of the liquid collection tank 2. In this way, when liquid cooling medium appears at any position in the liquid collection tank 2, the leakage detection element can detect it in real time and feed the detected data back to the control component.

[0069] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0070] The above is a detailed introduction to the liquid collection device provided by the present application. This article uses specific examples to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the scheme of the present application and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A liquid collection device, comprising a cold plate, characterized in that, It further includes a liquid collecting tank which is used to be arranged on the outer periphery of the joint connected to the cold plate. The liquid collecting tank is provided with a liquid collecting port which faces at least part of the pipeline components connected to the joint, and the liquid collecting port covers the joint and at least part of the pipeline components, so that the liquid cooling working medium leaked from at least part of the pipeline components, as well as the connection part between the joint and the cold plate, can be collected into the liquid collecting tank.

2. The liquid collecting device according to claim 1, wherein The liquid collecting tank is separately arranged from the cold plate and is arranged outside the cold plate.

3. The liquid collecting device according to claim 2, characterized in that, The liquid collecting device further includes a surrounding ring which surrounds the outer periphery of the joint, and the surrounding ring and the cold plate together form the liquid collecting tank.

4. The liquid collecting device according to claim 3, wherein, The cold plate includes a heat receiving plate and a cover plate arranged on the heat receiving plate. The surrounding ring is arranged around the cover plate, and a sealing ring is arranged between the surrounding ring and the cover plate to seal the gap between the surrounding ring and the cover plate. An installation groove is arranged on the outer wall of the cover plate, and the sealing ring is installed in the installation groove, and the depth of the installation groove is less than the thickness of the sealing ring.

5. The liquid collecting device according to claim 2, characterized in that, The liquid collecting device further includes a liquid collecting tray which is arranged on the cold plate, and the liquid collecting tray is provided with a through hole for the joint to pass through; The liquid collecting tray includes an annular convex structure which protrudes towards the direction close to at least part of the pipeline components to form the liquid collecting tank; The liquid collecting tray further includes a connecting plate, the annular convex structure is arranged on the connecting plate, and the connecting plate is connected to the cold plate.

6. The liquid collection device according to claim 1, wherein, The pipeline components include a liquid guiding pipeline and a leak-proof outer pipe located outside the liquid guiding pipeline, and a leak-proof detection belt is arranged on the inner wall of the leak-proof outer pipe.

7. The liquid collecting device according to claim 1, wherein, The cold plate includes a heat receiving plate and a cover plate arranged on the heat receiving plate, and the liquid collecting tank is a groove arranged on the cover plate.

8. The liquid collecting device according to any one of claims 1-7, characterized in that, It further includes a diversion structure which is arranged on the joint and cooperates with at least part of the pipeline components, and the diversion structure extends into the liquid collecting tank, so that the leaked liquid flowing out from at least part of the pipeline components flows into the liquid collecting tank after being diverted by the diversion structure.

9. The liquid collecting device according to any one of claims 1-7, characterized in that It further includes an outer cover which covers the liquid collecting tank to prevent the liquid cooling working medium in the liquid collecting tank from leaking out.

10. The liquid collecting device according to any one of claims 1-7, characterized in that, It further includes a liquid pumping mechanism which is connected to the liquid collecting tank to pump out the liquid cooling working medium in the liquid collecting tank. The liquid pumping mechanism includes: a liquid pumping pipe, one end of which extends into the liquid collecting tank; a liquid pumping component which is connected to the liquid pumping pipe to pump out the liquid cooling working medium in the liquid collecting tank through the liquid pumping pipe; a leak liquid detection part which is arranged in the liquid collecting tank to detect the amount of the liquid cooling working medium in the liquid collecting tank; a control component which is electrically connected to the leak liquid detection part and the liquid pumping component to control the liquid pumping component to start and pump out the liquid cooling working medium in the liquid collecting tank when the amount of the liquid cooling working medium in the liquid collecting tank exceeds the warning amount.

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