Cooling liquid filtering structure and liquid cooling system

Abstract

The utility model discloses a cooling liquid filtering structure and an applicable liquid cooling system thereof. The cooling liquid filtering structure comprises a container body, an upper cover, a fluid inlet, a fluid outlet and a filtering assembly. The container body is used for containing cooling liquid and comprises an upper opening. The upper cover is detachably arranged above the container body and is configured to seal the upper opening. The fluid inlet is arranged below the container body, wherein the cooling liquid is allowed to flow into the container body from the lower part of the container body through the fluid inlet. The fluid outlet is formed in the side edge of the container body. The filter assembly vertically penetrates through the container body, the fluid inlet is communicated to the upper opening and the fluid outlet through the filter assembly, and cooling liquid in the container body is allowed to pass through the filter assembly and is discharged from the fluid outlet.

Description

Technical Field

[0001] This application relates to a filtration structure, and more particularly to a coolant filtration structure and a liquid cooling system applicable thereto, which, through piping design, prevents coolant overflow and leakage during maintenance and replacement of the filter components. Background Technology

[0002] Currently, due to the increasing heat generated by electronic components such as CPUs and GPUs in servers, traditional air cooling methods are no longer sufficient. Therefore, liquid cooling systems are gradually replacing air cooling systems for heat dissipation. Common liquid cooling systems typically use cold plates within the server for heat dissipation, and these cold plates utilize a microchannel structure for heat exchange. Since the size of the microchannels is usually less than 100 micrometers, liquid cooling systems are equipped with filters to purify the coolant, preventing impurities (particles) in the supplied coolant from clogging the cold plates.

[0003] Generally, before replacing or repairing an online filter in a cooling system, the system needs to be drained to prevent excessive coolant overflow during filter replacement. Furthermore, even if draining is not required when replacing filter components, the filter is still full of coolant during replacement, making it prone to overflow due to movement. Additionally, air can easily accumulate in water-cooled system filters, causing filter blockage.

[0004] In view of this, it is necessary to provide a coolant filtration structure and a suitable liquid cooling system, which can prevent coolant overflow and leakage when the filter components are replaced during maintenance through pipeline design, and solve the deficiencies of known technologies. Utility Model Content

[0005] The purpose of this application is to provide a coolant filtration structure and a liquid cooling system applicable thereto, which, through pipeline design, can prevent coolant overflow and leakage when maintaining or replacing filter components.

[0006] Another objective of this application is to provide a coolant filtration structure and its applicable liquid cooling system. The structural design maintains the liquid level within the coolant filtration structure below the height of the top opening, preventing leakage during internal filter component replacement or leakage due to overfilling. During the filling phase after replacement, the coolant effectively fills the internal space of the container body. The filter structure, with its top opening and cover, prevents leakage during filter replacement. Furthermore, the piping connecting the container body to the liquid cooling system does not need to be removed during filter component replacement or maintenance, thus reducing the risk of coolant overflow or leakage. On the other hand, the removable top cover allows for the installation of an vent valve, enabling the coolant flowing in from below to expel any accumulated air from inside the container body, easily filling the interior with coolant and preventing air blockage caused by a partially filled filter structure. The top cover also features a downward-facing protrusion corresponding to the top opening of the container body; when the top cover is sealed, the protrusion extends downward into the receiving space, displacing the coolant within. When the top cover is opened for filter component replacement or maintenance, the volume of the top cover protrusion removed from the receiving space is compensated by the liquid, further reducing the coolant level within the receiving space. This effectively lowers the liquid level and prevents coolant overflow and leakage. Of course, the shape and size of the protrusion can be adjusted according to actual application requirements. In some practical applications, the top cover and filter component are even directly connected to form an integrated structure, allowing the filter component to provide the same performance as a downward protrusion, lowering the liquid level when removed from the receiving space to prevent coolant overflow and leakage. The coolant filter structure uses a bottom-in, side-out piping design, allowing connection to the coolant transmission pipeline of the liquid cooling system, and is not limited to the connection location. The fluid inlet at the bottom of the container body can use any type of micro pump with a buffer tank to guide the fluid to the system main pump suction point or the reservoir. When replacing or maintaining the filter component, starting the system main pump or micro pump effectively lowers the coolant level and liquid pressure inside the filter structure. Pressure ranges, such as, but not limited to, positive pressure or vacuum, can prevent coolant leakage when the top cover of the filter structure is opened. It has practical industrial applicability.

[0007] To achieve the aforementioned objectives, this application provides a coolant filtration structure, including a container body, a top cover, a fluid inlet, a fluid outlet, and a filter assembly. The container body is used to contain coolant, and includes a top opening. The top cover is detachably disposed above the container body and configured to seal the top opening. The fluid inlet is disposed below the container body, allowing coolant to flow into the container body from below through the fluid inlet. The fluid outlet is disposed on one side of the container body. The filter assembly vertically penetrates the container body, with the fluid inlet connected to the top opening and the fluid outlet via the filter assembly, allowing coolant within the container body to pass through the filter assembly and be discharged from the fluid outlet.

[0008] In one embodiment, the top cover includes a boss that is spatially opposite to the upper opening and is received within the container body when the top cover seals the upper opening.

[0009] In one embodiment, the top cover includes a port, and the coolant filtration structure further includes an exhaust valve disposed on the top cover and connected to the container body through the port, configured to exhaust a gas inside the container body.

[0010] In one embodiment, when the top cover is removed from the upper opening, the coolant in the container body forms a liquid level lower than the upper opening, and the filter assembly is allowed to pass through the upper opening.

[0011] In one embodiment, the filter assembly is directly connected to the top cover to form an integral structure.

[0012] In one embodiment, the coolant filtration structure further includes a gasket, wherein the gasket is detachably disposed between the container body and the top cover, the container body and the top cover being connected by a sanitary clamp, and the gasket being clamped between the container body and the top cover.

[0013] To achieve the aforementioned objectives, this application further provides a liquid cooling system, including a water distribution unit, multiple coolant transmission pipelines, and multiple coolant filtration structures. The water distribution unit includes a system containment tank configured to temporarily store coolant. Multiple coolant transmission pipelines guide the coolant from the system containment tank to multiple heat dissipation modules for heat exchange before returning the coolant to the system containment tank. Multiple coolant filtration structures are respectively disposed on the multiple coolant transmission pipelines and configured to purify the coolant before it flows to the multiple heat dissipation modules. Each of the multiple coolant filtration structures includes a container body, a top cover, a fluid inlet, a fluid outlet, and a filter assembly. The container body includes a containment space and a top opening, wherein the containment space is configured to contain coolant and communicates outward through the top opening. The top cover is detachably disposed on the top of the container body and configured to seal the top opening. The fluid inlet is disposed at the bottom of the container body and communicates with the containment space, wherein coolant is allowed to flow into the containment space from the bottom of the container body through the fluid inlet. The fluid outlet is disposed on one side of the container body. The filter assembly is housed within the containment space through an opening at the top and is located between the fluid inlet and the fluid outlet. Coolant enters the containment space through the fluid inlet and then exits through the fluid outlet via the filter assembly.

[0014] In one embodiment, the liquid cooling system further includes a buffer tank, wherein the fluid inlets of multiple coolant filter structures are commonly coupled to the buffer tank, and the buffer tank is configured to collect the coolant in the accommodating space of the multiple coolant filter structures through the fluid inlets into the buffer tank when the multiple coolant transmission pipelines stop supplying coolant.

[0015] In one embodiment, the liquid cooling system further includes a micropump connected to a buffer tank, wherein the micropump is configured to transfer coolant from the buffer tank to a system main pump connection or system containment tank of the water distribution unit.

[0016] In one embodiment, the top cover includes a boss that is spatially opposite to the upper opening and is received within an accommodating space when the top cover seals the upper opening.

[0017] In one embodiment, the top cover includes a port, and the coolant filtration structure further includes an exhaust valve disposed on the top cover and connected to the accommodating space through the port, configured to exhaust a gas from the accommodating space.

[0018] In one embodiment, when the top cover is removed from the upper opening, the coolant forms a liquid level in the accommodating space that is lower than the upper opening, and the filter assembly is allowed to pass through the upper opening.

[0019] In one embodiment, the filter assembly is directly connected to the top cover to form an integral structure.

[0020] In one embodiment, the coolant filtration structure further includes a gasket, wherein the gasket is detachably disposed between the container body and the top cover, the container body and the top cover being connected by a sanitary clamp, and the gasket being clamped between the container body and the top cover. Attached Figure Description

[0021] The following detailed description of this application and the schematic diagrams of the embodiments are intended to enable those skilled in the art to better understand the above content, and are not intended to limit this application.

[0022] Figure 1 This is a schematic diagram showing the structure of the liquid cooling system according to the first embodiment of this application.

[0023] Figure 2 This is a schematic diagram showing the coolant filtration structure of the first embodiment of this application in the sealed state of the top cover.

[0024] Figure 3 This is a schematic diagram showing the coolant filtration structure of the first embodiment of this application in the open state of the top cover.

[0025] Figure 4 This is a schematic diagram illustrating the structure of the liquid cooling system according to the second embodiment of this application.

[0026] Figure 5 This is a perspective structural diagram showing the coolant filtration structure of the second embodiment of this application.

[0027] Figure 6 This is an exploded view showing the coolant filtration structure of the second embodiment of this application.

[0028] Figure 7This is a cross-sectional view showing the coolant filtration structure of the second embodiment of this application in the sealed state of the top cover.

[0029] Figure 8 This is a schematic diagram showing the coolant filtration structure of the second embodiment of this application in the open state of the top cover.

[0030] Figure 9 This is a schematic diagram showing the pipeline connection between multiple coolant filter structures and other components according to the second embodiment of this application.

[0031] Figure 10 This is a schematic diagram showing the piping connection of the buffer tank and the micro pump of the liquid cooling system according to the second embodiment of this application.

[0032] Explanation of reference numerals in the attached figures

[0033] 1.1a: Liquid cooling system

[0034] 2.2a: Coolant filtration structure,

[0035] 10: Container body,

[0036] 11: Storage space

[0037] 12: Opening at the top

[0038] 13: Sanitary clamps,

[0039] 20, 20a: Top cover,

[0040] 21: convex platform

[0041] 22: Opening,

[0042] 23: Exhaust valve

[0043] 24: Washers,

[0044] 30, 30a: Filter components,

[0045] 40: Fluid inlet,

[0046] 50: Fluid outlet

[0047] 6: Buffer groove

[0048] 60: Sub-takeover

[0049] 7: Coolant transfer piping

[0050] 8: Heat dissipation module

[0051] 9: Waterway distribution unit

[0052] 91: System housing slot

[0053] 92: Miniature pump,

[0054] F: Flow direction

[0055] L1, L2: Liquid level height

[0056] P: System main pump connection point

[0057] X, Y, Z: Axes. Detailed Implementation

[0058] Some typical embodiments embodying the features and advantages of this application will be described in detail in the following description. It should be understood that this application can have various variations in different ways, all of which do not depart from the scope of this application, and the descriptions and drawings herein are for illustrative purposes only and not for limiting this application. For example, if the following description of this application stating that a first feature is disposed on or above a second feature indicates that it includes embodiments where the first and second features are in direct contact, and also includes embodiments where additional features can be disposed between the first and second features, so that the first and second features may not be in direct contact. Furthermore, different embodiments in this application may use repeated reference numerals and / or designations. These repetitions are for simplification and clarity and are not intended to limit the relationships between the various embodiments and / or the described appearance structures. Moreover, to facilitate the description of the relationship between one component or feature in the drawings and another component(s) or feature(s), spatially related terms such as "upper," "lower," "top," "bottom," and similar terms may be used. In addition to the orientations illustrated in the accompanying drawings, spatially related terms are used to cover different orientations of the device in use or operation. The device may also be otherwise positioned (e.g., rotated 90 degrees or located in other orientations), and the descriptions of the spatially related terms used will be interpreted accordingly. Furthermore, when a component is referred to as "connected to" or "coupled to" another component, it may be directly connected to or coupled to the other component, or there may be intervening components. Although the numerical ranges and parameters of the broad scope of this application are approximate, the values ​​are stated as precisely as possible in specific examples. Additionally, it is understood that while terms such as "first," "second," etc., may be used in the claims to describe different components, these components should not be limited by these terms, and the components described accordingly in the embodiments are indicated by different component reference numerals. These terms are used to distinguish different components. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component without departing from the scope of the embodiments. The term "and / or" as thus used includes any or all combinations of one or more of the related listed items.

[0059] Figure 1 This is a schematic diagram showing the structure of the liquid cooling system according to the first embodiment of this application. Figure 2This is a schematic diagram showing the coolant filtration structure of the first embodiment of this application in the sealed state of the top cover. Figure 3 This is a schematic diagram showing the coolant filter structure of the first embodiment of this application in the open state of the top cover. (Reference) Figures 1 to 3 In this embodiment, this application provides a coolant filtration structure 2 for purifying coolant and a suitable liquid cooling system 1. The liquid cooling system 1 includes a reservoir and pumping unit (RPU) 9, at least one coolant transfer pipe 7, and at least one coolant filtration structure 2. The reservoir and pumping unit 9 includes a system reservoir 91 configured to temporarily store coolant. The coolant transfer pipe 7, regardless of the transfer method or path, can guide coolant from the system reservoir 91 to the heat dissipation module 8 for heat exchange and then guide the coolant back to the system reservoir 91. In this embodiment, the heat dissipation module 8 is, for example, a cold plate in a server, having microchannels smaller than 100 micrometers, which performs heat exchange through coolant flow, providing effective heat dissipation for the server. It is worth noting that the coolant filter structure 2 is connected to the coolant transmission pipe 7 and is configured to purify the coolant before it flows to the heat dissipation module 8, filtering out impurities such as those larger than 25 microns, so as to prevent the coolant supplied to the heat dissipation module 8 from being blocked by excessive impurities.

[0060] In this embodiment, the coolant filtration structure 2 further enhances ease of use and avoids leakage or overflow during maintenance through its piping design. The coolant filtration structure 2 includes a container body 10, a top cover 20, a fluid inlet 40, a fluid outlet 50, and a filter assembly 30. The container body 10 includes a receiving space 11 for containing coolant. In this embodiment, the container body 10 also includes an upper opening 12 through which the receiving space 11 can communicate outwards. The top cover 20 is detachably mounted on the top of the container body 10 by means of snaps, screws, or clamps, and is configured to seal the upper opening 12. The fluid inlet 40 is located below the container body 10, allowing coolant to flow from below the container body 10 into the receiving space 11 of the container body 10. The fluid outlet 50 is located on one side of the container body 10. The filter assembly 30 vertically penetrates the container body 10, is housed within the receiving space 11, and is arranged between the fluid inlet 40 and the fluid outlet 50. In this embodiment, the fluid inlet 40 is connected upward to the upper opening 12 through the filter assembly 30 or the accommodating space 11, and is also connected to the fluid outlet 50 to the side through the filter assembly 30 or the accommodating space 11, wherein the coolant in the container body 10 is allowed to pass through the filter assembly 30 and be discharged from the fluid outlet 50.

[0061] When the liquid cooling system 1 is operating, coolant is introduced into the coolant transmission pipe 7 through the lower fluid inlet 40, filtered by the filter assembly 30, and then discharged through the side fluid outlet 50, so that the purified coolant can be supplied to the heat dissipation module 8. The flow direction F of the coolant in the coolant filter structure 2 of this application is shown in the figure. It is worth noting that the flow channel of the coolant filter structure 2 adopts a design of lower inlet and side outlet, which can be arbitrarily connected to the coolant transmission pipe 7 of the liquid cooling system 1, and is not limited to the connection position. On the other hand, when the filter assembly 30 of the coolant filter structure 2 is replaced or repaired, the upper opening 12 of the container body 10 is designed to face upwards. After opening the top cover 20, the liquid level L1 in the coolant filter structure 2 can be kept below the height of the upper opening 12, avoiding leakage when replacing the internal filter assembly 30 or preventing leakage caused by full liquid.

[0062] In this embodiment, the upper cover 20 further includes a protrusion 21. The protrusion 21 is spatially relative to the upper opening 12. When the upper cover 20 seals the upper opening 12, the protrusion 21 protrudes downwards and is accommodated within the receiving space 11 of the container body 10. Since the upper cover 20 seals the upper opening 12 during operation of the liquid cooling system 1, the protrusion 21 extending downwards into the receiving space 11 can displace the coolant within the receiving space 11, maintaining the coolant level L1 within the receiving space 11 at no more than the height of the upper opening 12. Figure 2 As shown. When the top cover 20 is opened for replacement or maintenance of the filter assembly 30, the volume of the protrusion 21 of the top cover 20 that moves out of the accommodating space 11 is compensated by the liquid, so that the coolant in the container body 10 forms another liquid level L2 lower than the upper opening 12. At this time, the filter assembly 30 can be replaced or maintained through the upper opening 12. In other words, through the design of the protrusion 21, the liquid level of the coolant in the accommodating space 11 can be effectively lowered when the filter assembly 30 is replaced or maintained, thereby preventing coolant overflow and leakage. Of course, the shape and size of the protrusion 21 can be adjusted according to actual application requirements.

[0063] Figure 4 This is a schematic diagram illustrating the structure of the liquid cooling system according to the second embodiment of this application. Figure 5 This is a perspective structural diagram showing the coolant filtration structure of the second embodiment of this application. Figure 6 This is an exploded view showing the coolant filtration structure of the second embodiment of this application. Figure 7 This is a cross-sectional view showing the coolant filtration structure of the second embodiment of this application in the sealed state of the top cover. Figure 8 This is a schematic diagram showing the coolant filtration structure of the second embodiment of this application in the open state of the top cover. Figure 9 This is a schematic diagram showing the pipeline connection between multiple coolant filter structures and other components according to the second embodiment of this application. Figure 10This is a schematic diagram showing the piping connection of the buffer tank and micro pump of the liquid cooling system according to the second embodiment of this application. In this embodiment, the structures of the liquid cooling system 1a and the coolant filtration structure 2a are generally similar to those of... Figures 1 to 3 The liquid cooling system 1 and coolant filter structure 2 shown are labeled with the same component numbers to represent the same components, structures, and functions, and will not be described again here. Reference Figures 4 to 10 In this embodiment, the liquid cooling system 1a includes a water distribution unit 9, multiple coolant transmission pipelines 7, and multiple coolant filtration structures 2a. The multiple coolant transmission pipelines 7 guide coolant from the system receiving tank 91 to corresponding multiple heat dissipation modules 8 for heat exchange before returning the coolant to the system receiving tank 91. The multiple coolant filtration structures 2a are respectively arranged along the paths of the multiple coolant transmission pipelines 7 before guiding the coolant to the heat dissipation modules 8, to purify the coolant. In this embodiment, each of the multiple coolant filtration structures 2a includes a container body 10, a top cover 20a, a fluid inlet 40, a fluid outlet 50, and a filter assembly 30a. The filter assembly 30a is more directly connected to the top cover 20a to form an integrated structure. The coolant filtration structure 2a also includes a gasket 24, which is detachably disposed between the container body 10 and the top cover 20a. In addition, the container body 10 and the top cover 20a can be connected by a sanitary clamp 13, and the gasket 24 is clamped between the container body 10 and the top cover 20a.

[0064] When the liquid cooling system 1a is operating, coolant is introduced into the coolant through the lower fluid inlet 40 via the coolant transfer pipe 7, filtered by the filter assembly 30a, and then discharged through the side fluid outlet 50, allowing the purified coolant to be supplied to the heat dissipation module 8. When the coolant flows along the flow direction F from the lower inlet to the side outlet through the coolant filter structure 2a, the liquid level L1 in the accommodating space 11 is maintained at no more than the height of the upper opening 12. Since the boss 21 connected below the upper cover 20a and the filter assembly 30a are both accommodated in the accommodating space 11 when the upper opening 12 is sealed, the filter assembly 30a provides the same performance as the downward boss 21. When it moves out of the accommodating space 11, the coolant level L2 is lowered, thus preventing coolant overflow and leakage. Of course, this application is not limited to this.

[0065] In this embodiment, the upper cover 20a includes a through-hole 22, and the coolant filter structure 2a also includes an exhaust valve 23, which is disposed on the upper cover 20a and connected to the accommodating space 11 inside the container body 10 through the through-hole 22, configured to expel gas from inside the container body 10. With the exhaust valve 23 installed, when coolant enters the accommodating space 11 from the fluid inlet 40 below the container body 10, the flowing coolant fluid can expel the accumulated gas inside the container accommodating space 11, thereby easily filling the accommodating space 11 of the container body 10 with coolant and avoiding the air blockage problem caused by the filter structure not being fully filled. Of course, this application is not limited to this.

[0066] On the other hand, in this embodiment, the liquid cooling system 1a also includes a buffer tank 6, wherein the fluid inlets 40 of the multiple coolant filter structures 2a are coupled to the buffer tank 6 via branch pipes 60. Thus, when the multiple coolant transmission lines 7 stop supplying coolant, the buffer tank 6 can collect the coolant in the accommodating spaces 11 of the multiple coolant filter structures 2a through the fluid inlets 40 and collect it in the buffer tank 6. In this embodiment, the liquid cooling system 1a also includes a micro pump 92 connected to the buffer tank 6, wherein the micro pump 92 is configured to transfer coolant from the buffer tank 6 to a system main pump connection P or system accommodating tank 91 of the water distribution unit 9. When replacing or repairing the filter assembly 30a, starting the system main pump or the micro pump 92 can effectively reduce the coolant level L2 and liquid pressure inside each coolant filter structure 2a. The pressure range, such as, but not limited to, positive pressure or vacuum, can prevent coolant leakage when the top cover 20a of the coolant filter structure 2a is opened. Of course, in other embodiments, the fluid inlet 40 below the container body 10 may use any form of micro pump 92 with buffer tank 6 to guide the fluid to the system main pump suction port P or the system receiving tank 91. This application is not limited thereto, and will not be elaborated further.

[0067] In summary, this application provides a coolant filtration structure and a suitable liquid cooling system. Through piping design, coolant overflow and leakage can be avoided during filter component replacement and maintenance. The structural design maintains the coolant level within the filtration structure below the height of the top opening, preventing leakage during internal filter component replacement or leakage due to overfilling. During the filling phase after replacement, the coolant effectively fills the internal space of the container body. The filter structure, with its top opening and cap, prevents leakage when the filter structure is opened for replacement. Furthermore, the piping connecting the container body to the liquid cooling system does not need to be removed during filter component replacement or maintenance, thus reducing the risk of coolant overflow or leakage. On the other hand, the removable top cap allows for the installation of an vent valve, enabling the coolant flowing in from below to expel accumulated air from inside the container body, easily filling the container body with coolant and preventing air blockage caused by a partially filled filter structure. The top cover features a downward-facing protrusion corresponding to the opening at the top of the container body. When the top cover is sealed, the protrusion extends downward into the accommodating space, displacing the coolant within. When the top cover is opened for filter replacement or maintenance, the volume of the protrusion removed from the accommodating space is compensated by the liquid, further lowering the coolant level and effectively preventing coolant overflow and leakage. The shape and size of the protrusion can be adjusted according to actual application requirements. In some practical applications, the top cover and filter assembly are directly connected to form an integrated structure, allowing the filter assembly to provide the same performance as the downward-facing protrusion, lowering the liquid level when removed from the accommodating space to prevent coolant overflow and leakage. The coolant filter structure uses a bottom-in, side-out piping design, allowing connection to the coolant transmission pipeline of the liquid cooling system, and is not limited to any particular connection location. The fluid inlet at the bottom of the container body can be guided to the system's main pump suction point or reservoir using any type of micro-pump with a buffer tank. When replacing or repairing filter components, activating the system's main pump or micro pump effectively reduces the coolant level and pressure inside the filter structure. Pressure ranges, including but not limited to positive pressure or vacuum, prevent coolant leakage when the filter structure's top cover is opened. This technology is highly applicable in industrial settings.

[0068] This application may be modified in various ways by those skilled in the art, but none of them shall deviate from the scope of protection sought in the appended patent application.

Claims

1. A cooling liquid filtering structure, wherein, The container body includes an upper opening for receiving a coolant, an upper cover detachably disposed above the container body and configured to seal the upper opening, a fluid inlet disposed below the container body, wherein the coolant is allowed to flow into the container body from below the container body through the fluid inlet, a fluid outlet disposed at a side of the container body, and a filter assembly vertically penetrating the container body, wherein the fluid inlet is communicated to the upper opening and the fluid outlet through the filter assembly, and wherein the coolant in the container body is allowed to pass through the filter assembly and be discharged from the fluid outlet. The upper cover includes a boss accommodated in the container body when the upper cover seals the upper opening. The upper cover includes a through hole, and the coolant filtering structure further includes an exhaust valve disposed on the upper cover and communicated to the container body through the through hole and configured to discharge a gas in the container body. When the upper cover is detached from the upper opening, the coolant forms a liquid level in the container body lower than the upper opening, and the filter assembly allows the coolant to pass through the upper opening. Further comprising a gasket detachably disposed between the container body and the upper cover, the container body and the upper cover are connected by a sanitary clamp and the gasket is clamped between the container body and the upper cover. The water distribution unit includes a system accommodating groove configured to temporarily store a coolant, a plurality of coolant transmission pipelines for guiding the coolant from the system accommodating groove to a plurality of heat dissipation modules for heat exchange and then guiding the coolant back to the system accommodating groove, and a plurality of coolant filtering structures respectively disposed in the plurality of coolant transmission pipelines and configured to purify the coolant before the coolant is guided to the plurality of heat dissipation modules.

2. The cooling liquid filtering structure according to claim 1, wherein, Each of the plurality of coolant filtering structures includes a container body including an accommodating space and an upper opening, wherein the accommodating space is configured to accommodate the coolant and is communicated to the outside through the upper opening, an upper cover detachably disposed above the container body and configured to seal the upper opening, a fluid inlet disposed below the container body and communicated to the accommodating space, wherein the coolant is allowed to flow into the accommodating space from below the container body through the fluid inlet, a fluid outlet disposed at a side of the container body, and a filter assembly accommodated in the accommodating space through the upper opening and located between the fluid inlet and the fluid outlet, wherein the coolant enters the accommodating space from the fluid inlet, passes through the filter assembly and is discharged from the fluid outlet.

3. The cooling liquid filtering structure according to claim 1, wherein, Further comprising a buffer tank, wherein the fluid inlets of the plurality of coolant filtering structures are collectively coupled to the buffer tank, and the buffer tank is configured to collect the coolant in the accommodating spaces of the plurality of coolant filtering structures into the buffer tank through the fluid inlets when the plurality of coolant transmission pipelines stop conveying the coolant.

4. The cooling liquid filtering structure according to claim 1, wherein, ​ 5. The cooling liquid filtering structure according to claim 1, wherein, ​ 6. A liquid cooling system, wherein, ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 7. The liquid cooling system of claim 6, wherein, ​ 8. The liquid cooling system of claim 7, wherein, A micro pump is also connected to the buffer tank, wherein the micro pump is configured to deliver the coolant from the buffer tank to a system main pump connection of the waterway distribution unit or the system accommodation tank.

9. The liquid cooling system of claim 6, wherein, The upper cover includes a boss, which is spatially opposite to the upper opening and accommodated in the accommodation space when the upper cover seals the upper opening.

10. The liquid cooling system of claim 6, wherein, The upper cover includes a through hole, and the coolant filtering structure further includes an exhaust valve arranged on the upper cover and communicated to the accommodation space through the through hole and configured to exhaust a gas in the accommodation space.

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