Liquid cooling system

Abstract

The utility model provides a liquid cooling system, and relates to the technical field of heat exchange. The liquid cooling system comprises a power element, a heat exchanger and a liquid cooling tank, and the power element, the heat exchanger and the liquid cooling tank are connected through pipelines to form a liquid cooling circulation loop. The heat exchanger is provided with an exhaust hole, and the position of the exhaust hole is higher than the preset liquid level of the heat exchanger. The problem that the heat exchange efficiency of the liquid cooling circulation system is reduced due to bubbles can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange, and in particular to a liquid cooling system. Background Art

[0002] Liquid cooling system is a highly efficient heat dissipation technology that completely or partially immerses electronic equipment in coolant, utilizing the high thermal conductivity and large specific surface area of the liquid to absorb heat.

[0003] Immersion liquid cooling systems typically fully or partially immerse servers, data centers, and other electronic equipment in a liquid cooling tank filled with heat transfer media. Because servers and other electronic equipment require enclosure and maintenance, the cooling tank is often not sealed or even left open, preventing the heat transfer media from circulating in a vacuum environment. Consequently, fluctuations in the heat transfer media's flow rate, liquid surface impact, temperature, and pressure can easily lead to the formation of bubbles within the heat exchanger, which can affect the heat transfer efficiency of the liquid cooling system. Utility Model Content

[0004] The purpose of the utility model is to provide a liquid cooling system, which can improve the problem of reduced heat exchange efficiency of the liquid cooling circulation system caused by bubbles.

[0005] The embodiment of the present utility model is achieved as follows:

[0006] The utility model provides a liquid cooling system, comprising a power element, a heat exchanger and a liquid cooling tank, wherein the power element, the heat exchanger and the liquid cooling tank are connected by a pipeline to form a liquid cooling circulation loop;

[0007] The heat exchanger is provided with an exhaust hole, and the exhaust hole is arranged at a position higher than a preset liquid level height of the heat exchanger.

[0008] In an optional embodiment, the liquid cooling system further includes a liquid storage tank and a bypass pipe;

[0009] The liquid storage tank is connected to the liquid cooling circulation loop through a pipeline, and the liquid storage tank is configured to cool the liquid;

[0010] One end of the bypass pipe is connected to the exhaust hole, and the other end of the bypass pipe is connected to the liquid storage tank;

[0011] The liquid storage tank is provided with an exhaust structure.

[0012] In an optional embodiment, the exhaust structure is an exhaust pipe provided in the liquid storage tank, one end of the exhaust pipe is connected to the liquid storage tank, and the other end is configured to be connected to the external environment.

[0013] In an optional embodiment, the outlet of the power element is connected to the inlet of the heat exchanger through a pipe, the outlet of the heat exchanger is connected to the inlet of the liquid cooling tank through a pipe, the outlet of the liquid cooling tank is connected to the inlet of the liquid storage tank through a drain pipe, and the outlet of the liquid storage tank is connected to the inlet of the power element through a pipe to form a liquid cooling circulation loop, and the power element can allow the coolant to circulate along the liquid cooling circulation loop.

[0014] In an optional embodiment, the exhaust structure further includes a connecting pipe, one end of which is in communication with the liquid storage tank, and the other end of which extends upward and is configured to communicate with the external environment;

[0015] The bypass pipe is connected to the side wall of the connecting pipe and communicates with the connecting pipe. The gas transported by the bypass pipe can be discharged to the external environment through the connecting pipe, and the coolant transported by the bypass pipe can flow back to the liquid storage tank through the connecting pipe.

[0016] In an optional embodiment, the drainage pipe is provided with a first interface, a second interface, a third interface and a fourth interface in order from bottom to top in the height direction;

[0017] The first interface is connected to the inlet of the liquid storage tank, the second interface is connected to the outlet of the liquid cooling tank, the end of the connecting pipe away from the liquid storage tank is connected to the third interface, and the fourth interface is configured to communicate with the external environment.

[0018] In an optional embodiment, there are multiple heat exchangers, and the multiple heat exchangers are connected between the power element and the liquid cooling tank in parallel and / or in series;

[0019] All heat exchangers are equipped with exhaust holes at the highest position;

[0020] The bypass pipeline includes a main pipeline and a plurality of branch pipelines arranged on the main pipeline. The plurality of branch pipelines are connected to the plurality of exhaust holes in a one-to-one correspondence. The main pipeline is connected to the connecting pipeline.

[0021] In an optional embodiment, the heat exchanger includes a heat exchanger body, a manifold structure, and an exhaust component;

[0022] The heat exchanger body is provided with a plurality of flow channels, and the flow collecting structure is provided on the heat exchanger body;

[0023] The manifold structure has independent liquid inlet and outlet channels;

[0024] The inlets of all flow channels are connected to the liquid inlet channel, and the outlets of all flow channels are connected to the liquid outlet channel;

[0025] The inlet of the heat exchanger is arranged on the manifold structure and is communicated with the liquid inlet channel; the outlet of the heat exchanger is arranged on the manifold structure and is communicated with the liquid outlet channel;

[0026] The top wall of the collecting structure is provided with a first connecting hole and a second connecting hole, the first connecting hole is connected to the liquid inlet channel, and the second connecting hole is connected to the liquid outlet channel. The exhaust component is installed on the collecting structure, the exhaust hole is provided in the exhaust structure, and the first connecting hole and the second connecting hole are both connected to the exhaust hole.

[0027] In an optional embodiment, the inlet of the heat exchanger is arranged near the top of the heat exchanger, and the outlet of the heat exchanger is arranged near the bottom of the heat exchanger.

[0028] In an optional embodiment, the liquid cooling system further comprises a container and a fan;

[0029] The container is provided with installation notches and fixing notches;

[0030] The heat exchanger is installed in the installation notch, the fan is installed in the fixed notch, and the fan is configured to dissipate heat from the heat exchanger;

[0031] The power components and liquid cooling tank are installed in the container.

[0032] The beneficial effects of the embodiments of the present utility model are:

[0033] This application provides a vent above the preset liquid level in the heat exchanger. The vent allows the top of the heat exchanger's liquid level to communicate with the external atmospheric pressure. This allows bubbles formed within the coolant in the heat exchanger to quickly rise to the liquid surface due to the pressure differential and buoyancy, preventing them from flowing with the heat exchange medium. This reduces bubbles in the circulation loop and improves heat exchange efficiency. When bubbles floating on the liquid surface burst, the air can be discharged through the vent. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 A schematic diagram of the connection of a liquid cooling system provided in an embodiment of the present utility model;

[0036] Figure 2 A schematic diagram of the connection of the liquid cooling system without the heat exchanger provided in an embodiment of the present utility model;

[0037] Figure 3 for Figure 2 A in the middle is an enlarged schematic diagram;

[0038] Figure 4 A schematic structural diagram of a liquid storage tank of a liquid cooling system provided by an embodiment of the present utility model;

[0039] Figure 5 A schematic structural diagram of a heat exchanger of a liquid cooling system provided in an embodiment of the present utility model;

[0040] Figure 6 A schematic cross-sectional view of a heat exchanger of a liquid cooling system according to an embodiment of the present invention;

[0041] Figure 7 for Figure 6 The enlarged schematic diagram of point B in the middle;

[0042] Figure 8 This is a structural schematic diagram of a liquid cooling system provided in an embodiment of the present utility model arranged in a container.

[0043] Icons: 100-liquid cooling system; 111-power element; 113-liquid cooling tank; 115-container; 117-fan; 130-heat exchanger; 131-exhaust hole; 133-bypass pipe; 135-main pipe; 137-branch pipe; 139-heat exchanger body; 141-collecting structure; 143-exhaust component; 145-liquid inlet channel; 147-liquid outlet channel; 148-first connecting hole; 149-second connecting hole; 150-liquid storage tank; 151-exhaust pipe; 153-connecting pipe; 170-drainage pipe; 171-first interface; 173-second interface; 175-third interface; 177-fourth interface. DETAILED DESCRIPTION

[0044] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0046] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0047] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0048] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0049] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0050] Example

[0051] Figures 1 to 8 The present invention provides a liquid cooling system 100, comprising a power element 111, a heat exchanger 130, and a liquid cooling tank 113. The power element 111, the heat exchanger 130, and the liquid cooling tank 113 are connected by a pipe to form a liquid cooling circulation loop. The heat exchanger 130 is provided with an exhaust hole 131, which is positioned above a preset liquid level in the heat exchanger 130.

[0052] In this embodiment, the heat exchanger 130 is provided with a vent 131. This creates a pressure differential within the heat exchanger 130, with higher pressure at the bottom and lower pressure at the top. This allows bubbles formed within the heat exchanger 130 to quickly rise to the liquid surface due to the pressure differential and buoyancy, preventing them from flowing with the heat exchange medium. This reduces bubbles in the circulation loop and improves heat exchange efficiency. When bubbles floating on the liquid surface burst, the air can be discharged through the vent 131.

[0053] It should be noted that the preset liquid level height of the heat exchanger 130 refers to the liquid level position of the coolant in the heat exchanger set when the heat exchanger 130 is in normal use. The exhaust hole 131 is set at a position higher than the preset liquid level height of the heat exchanger 130. It can also be understood that the position of the exhaust hole is above the coolant level when the heat exchanger is in normal use.

[0054] Generally, the exhaust hole 131 is set at the highest position of the heat exchanger 130, such as the top wall. Of course, the positions of other exhaust holes 131 in the present application can also be set according to implementation requirements, as long as they are not lower than the height of the liquid level.

[0055] Furthermore, the liquid cooling system 100 includes a liquid storage tank 150 and a bypass pipe 133. The liquid storage tank 150 is connected to the liquid cooling circuit via a pipe and is configured to store coolant. One end of the bypass pipe 133 communicates with the exhaust hole 131, and the other end of the bypass pipe 133 is connected to the liquid storage tank 150. The liquid storage tank 150 is provided with an exhaust structure.

[0056] In this embodiment, a liquid storage tank 150 is provided, and the air outlet is connected to the liquid storage tank 150 via a bypass pipe 133. Furthermore, an exhaust structure is provided in the liquid storage tank 150. This allows bubbles floating on the liquid surface in the heat exchanger 130 to be discharged into the liquid storage tank along the bypass pipe 133, thereby avoiding affecting the heat exchange of the heat exchanger 130. However, bubbles discharged into the liquid storage tank 150 will burst after a period of stagnancy due to changes in pressure, temperature, etc. Therefore, the exhaust structure is provided in the liquid storage tank 150. This allows the air to be discharged through the exhaust structure after the bubbles burst.

[0057] In this embodiment, the exhaust structure is an exhaust pipe 151 provided in the liquid storage tank 150 . One end of the exhaust pipe 151 is connected to the liquid storage tank 150 , and the other end is configured to be connected to the external environment.

[0058] In this embodiment, the exhaust pipe 151 is provided so that the liquid storage tank 150 can be conveniently connected to the external environment for exhaust.

[0059] Specifically, the liquid storage tank 150 is disposed below the liquid cooling tank 113, and the exhaust pipe 151 extends from one side of the liquid storage tank 150 to the top of the liquid cooling tank 113, then bends inwardly and extends to the top of the liquid cooling tank 113. This arrangement prevents coolant dripping from the exhaust pipe 151 into the liquid cooling tank 113, while also allowing the liquid storage tank 150 to be connected to the external environment.

[0060] In this embodiment, the outlet of the power element 111 is connected to the inlet of the heat exchanger 130 through a pipe, the outlet of the heat exchanger 130 is connected to the inlet of the liquid cooling tank 113 through a pipe, the outlet of the liquid cooling tank 113 is connected to the inlet of the liquid storage tank 150 through a drain pipe 170, and the outlet of the liquid storage tank 150 is connected to the inlet of the power element 111 through a pipe, forming a liquid cooling circulation loop, and the power element 111 can make the coolant circulate along the liquid cooling circulation loop.

[0061] In this embodiment, the power element 111, the heat exchanger 130, the liquid cooling tank 113 and the liquid storage tank 150 are sequentially connected in the above manner, so that the bubbles formed in the heat exchanger 130 will not flow through the liquid cooling tank 113, thereby improving the heat exchange efficiency of the coolant in the liquid cooling tank 113.

[0062] Figures 1 to 8 In this embodiment, the exhaust structure further includes a connecting pipe 153. One end of the connecting pipe 153 is connected to the liquid storage tank 150, and the other end extends upward and is configured to communicate with the external environment. The bypass pipe 133 is connected to the side wall of the connecting pipe 153 and is in communication with the connecting pipe 153. The gas transported by the bypass pipe 133 can be discharged to the external environment through the connecting pipe 153, and the coolant transported by the bypass pipe 133 can be returned to the liquid storage tank 150 through the connecting pipe 153.

[0063] Because the bypass pipe 133 carries both liquid coolant, bubbles, and gas, this embodiment provides a connecting pipe 153 in the liquid storage tank 150 to connect the connecting pipe 153 to the external environment. The bypass pipe 133 is then connected to the connecting pipe 153. This allows the substances carried in the bypass pipe 133 to undergo gas-liquid separation after flowing through the connecting pipe 153. The gas is directly discharged from the top opening of the connecting pipe 153, while the liquid and bubbles are allowed to flow back into the liquid storage tank 150 under the action of gravity, thereby achieving gas-liquid separation in the connecting pipe 153.

[0064] Of course, in some embodiments of the present application, the bypass pipe 133 may also be directly connected to the liquid storage tank 150 , so that both gas and liquid enter the liquid storage tank 150 , and the gas is then discharged through the exhaust pipe 151 .

[0065] In this embodiment, the drainage pipe 170 is provided with a first port 171, a second port 173, a third port 175, and a fourth port 177 in the order from bottom to top in the height direction. The first port 171 is connected to the inlet of the liquid storage tank 150, the second port 173 is connected to the outlet of the liquid cooling tank 113, the end of the connecting pipe 153 away from the liquid storage tank 150 is connected to the third port 175, and the fourth port 177 is configured to communicate with the external environment.

[0066] In this embodiment, a fourth interface 177 connected to the outside is set at the top of the drainage pipe 170, and the connecting pipe 153 is connected to the third interface 175. The gas in the liquid storage tank 150 can be discharged to the drainage pipe through the connecting pipe 153 and then discharged from the fourth interface 177, which can further realize gas-liquid separation and save pipeline length.

[0067] Of course, in some other embodiments of the present application, the top end of the connecting pipe 153 may also be directly connected to the external environment.

[0068] Figures 1 to 8 In this embodiment, the fourth interface 177 is located higher than the liquid level in the liquid cooling tank 113 , so that the cooling liquid from overflowing from the fourth interface 177 can be avoided in the event of a system failure.

[0069] In this embodiment, there are multiple heat exchangers 130, and the multiple heat exchangers are connected in parallel between the power element 111 and the liquid cooling tank 113. An exhaust hole 131 is provided at the highest position of all heat exchangers 130. The bypass pipe 133 includes a main pipe 135 and a plurality of branch pipes 137 provided on the main pipe 135. The plurality of branch pipes 137 are connected to the plurality of exhaust holes 131 one by one, and the main pipe 135 is connected to the connecting pipe 153. In this way, the bubbles generated in all the heat exchangers 130 can be converged into the main pipe 135 through the branch pipes 137, and then flow to the connecting pipe 153 through the main pipe 135. After being diverted by the connecting pipe 153, the gas can be discharged through the fourth interface 177 of the exhaust and liquid discharge pipe 170, and the liquid flows back to the liquid storage tank 150 through the connecting pipe 153. Bubbles are also more likely to burst during the flow process.

[0070] Of course, in some other embodiments of the present application, a plurality of heat exchangers 130 may also be connected between the power element 111 and the liquid cooling tank 113 in a series or series plus parallel manner.

[0071] Figures 1 to 8In this embodiment, the heat exchanger 130 includes a heat exchanger body 139, a collecting structure 141 and an exhaust component 143. The heat exchanger body 139 is provided with a plurality of flow channels, and the collecting structure 141 is provided on the heat exchanger body 139. The collecting structure 141 has mutually independent liquid inlet flow channels 145 and liquid outlet flow channels 147. The inlets of all flow channels are connected to the liquid inlet flow channels 145, and the outlets of all flow channels are connected to the liquid outlet flow channels 147. The inlet of the heat exchanger 130 is provided on the collecting structure 141 and is connected to the liquid inlet flow channel 145; the outlet of the heat exchanger 130 is provided on the collecting structure 141 and is connected to the liquid outlet flow channel 147. The top wall of the collecting structure 141 is provided with a first connecting hole 148 and a second connecting hole 149. The first connecting hole 148 is connected to the liquid inlet channel 145, and the second connecting hole 149 is connected to the liquid outlet channel 147. The exhaust component 143 is installed on the collecting structure 141, and the exhaust hole 131 is provided on the exhaust component 143, and the first connecting hole 148 and the second connecting hole 149 are both connected to the exhaust hole 131.

[0072] In this embodiment, a first connecting hole 148 connected to the liquid inlet channel 145 and a second connecting hole 149 connected to the liquid outlet channel 147 are provided at the top of the collecting structure 141 of the heat exchanger 130, and an exhaust component 143 is provided in the collecting structure 141 so that the exhaust holes 131 provided in the exhaust component 143 are all connected. In this way, the bubbles in the liquid inlet channel 145 and the liquid outlet channel 147 will respectively converge from the first connecting hole 148 and the second connecting hole 149 to the exhaust hole 131, and flow along the bypass pipe 133.

[0073] In this embodiment, the flow channels of the heat exchanger body are arranged along the width of the heat exchanger body and in at least two rows along the thickness. Coolant for the power components 111 is fed into the cooling channels. The liquid flows along the ends of the inner channels, then flows through the rear channels to the outflow channels, where it is then discharged and supplied to the cooling tank 113.

[0074] Furthermore, a set of heat exchanger bodies 139 is provided on each side of the header. That is, each heat exchanger 130 has two sets of heat exchanger bodies 139, allowing the header to be shared. The heat exchanger bodies 139 are air-cooled, with liquid flow channels inside and air-cooling channels outside.

[0075] In this embodiment, the inlet of the heat exchanger 130 is arranged near the top of the heat exchanger 130, and the outlet of the heat exchanger 130 is arranged near the bottom of the heat exchanger 130. That is, the inlet of the heat exchanger 130 is arranged on one side of the top of the liquid inlet channel 145, and the outlet of the heat exchanger 130 is arranged on one side of the bottom of the liquid outlet channel 147. The pressure at the top of the liquid inlet channel 145 is low, and bubbles formed by the impact of the liquid surface during liquid supply will float on the liquid surface, and bubbles in the coolant can also quickly float to the liquid surface. The outlet position has a low pressure, and there will be relatively few bubbles, or even no bubbles. This can further reduce the bubbles in the coolant supplied to the liquid cooling tank 113, thereby improving the heat exchange efficiency of the liquid cooling tank 113.

[0076] Figures 1 to 8 In this embodiment, the liquid cooling system 100 further includes a container 115 and a fan 117. The container 115 is provided with a mounting notch and a fixing notch. The heat exchanger 130 is mounted in the mounting notch, and the fan 117 is mounted in the fixing notch. The fan 117 is configured to dissipate heat from the heat exchanger 130. The power element 111 and the liquid cooling tank 113 are disposed within the container 115.

[0077] Furthermore, there are six sets of heat exchangers 130. Mounting notches are provided on both sidewalls of the container 115 in the width direction, with three sets arranged side by side on each side. The power element 111 is a pump, and the inlets of the six sets of heat exchangers 130 are connected in parallel to the pump outlets via pipes. Of course, in other embodiments of the present application, the number of heat exchangers 130 can be selected based on heat exchange requirements. When the number of heat exchangers 130 is small, the mounting notches can also be provided on one sidewall of the container 115.

[0078] In this embodiment, a fixed notch is provided at the top of the container 115. Multiple sets of fans 117 are installed in the fixed notch. The operation of the fans 117 creates a negative pressure within the container 115, drawing air outside the container 115 into the container 115 through the air duct of the heat exchanger 130, thereby cooling the heat exchanger 130.

[0079] In this embodiment, there are four liquid cooling tanks 113, which are arranged in two rows within container 115 via support racks. The four liquid cooling tanks 113 are connected in parallel to the outlet of heat exchanger 130. Of course, in other embodiments of the present application, the number of liquid cooling tanks 113 can be selected based on actual needs. Alternatively, the tanks 113 can be placed directly in container 115 without support racks.

[0080] In this embodiment, there are two liquid storage tanks 150, which are disposed at the bottom layers of the two support frames, respectively. The outlets of the liquid cooling tanks 113 on the corresponding support frames are connected to the liquid storage tanks 150. The connecting pipe 153 can be connected to one of the liquid storage tanks 150, or to both of the liquid storage tanks 150. The two liquid storage tanks 150 are connected by a connecting pipe, thereby balancing the liquid levels of the coolant in the two liquid storage tanks 150. Of course, in other embodiments of the present application, the number of liquid storage tanks 150 can also be selected according to actual needs, for example, one or more.

[0081] In summary, the liquid cooling system 100 provided in this embodiment provides a vent 131 in the heat exchanger 130. This creates a pressure differential within the heat exchanger 130, with higher pressure at the bottom and lower pressure at the top. This allows bubbles formed within the heat exchanger 130 to quickly rise to the liquid surface due to the pressure differential and buoyancy, preventing them from flowing with the heat exchange medium. This reduces bubbles in the circulation loop and improves heat exchange efficiency. When bubbles floating on the liquid surface burst, the air can be discharged through the vent 131.

[0082] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A liquid cooling system, characterized in that: The invention comprises a power element (111), a heat exchanger (130) and a liquid cooling tank (113), wherein the power element (111), the heat exchanger (130) and the liquid cooling tank (113) are connected via a pipeline to form a liquid cooling circulation loop; The heat exchanger (130) is provided with an exhaust hole (131), and the exhaust hole (131) is provided at a position higher than a preset liquid level of the heat exchanger (130).

2. The liquid cooling system according to claim 1, characterized in that The liquid cooling system further includes a liquid storage tank (150) and a bypass pipe (133); The liquid storage tank (150) is connected to the liquid cooling circulation loop via a pipeline, and the liquid storage tank (150) is configured to store cooling liquid; One end of the bypass pipe (133) is in communication with the exhaust hole (131), and the other end of the bypass pipe (133) is connected to the liquid storage tank (150); The liquid storage tank (150) is provided with an exhaust structure.

3. The liquid cooling system according to claim 2, characterized in that: The exhaust structure is an exhaust pipe (151) provided on the liquid storage tank (150), one end of the exhaust pipe (151) is in communication with the liquid storage tank (150), and the other end is configured to be in communication with the external environment.

4. The liquid cooling system according to claim 2 or 3, characterized in that: The outlet of the power element (111) is connected to the inlet of the heat exchanger (130) through a pipeline, the outlet of the heat exchanger (130) is connected to the inlet of the liquid cooling tank (113) through a pipeline, the outlet of the liquid cooling tank (113) is connected to the inlet of the liquid storage tank (150) through a drainage pipeline (170), and the outlet of the liquid storage tank (150) is connected to the inlet of the power element (111) through a pipeline, forming the liquid cooling circulation loop, and the power element (111) can allow the coolant to circulate along the liquid cooling circulation loop.

5. The liquid cooling system according to claim 4, characterized in that: The exhaust structure further comprises a connecting pipe (153), one end of which is in communication with the liquid storage tank (150), and the other end of which extends upward and is configured to be in communication with the external environment; The bypass pipe (133) is connected to the side wall of the connecting pipe (153) and communicates with the connecting pipe (153). The gas transported by the bypass pipe (133) can be discharged to the external environment through the connecting pipe (153), and the cooling liquid transported by the bypass pipe (133) can flow back into the liquid storage tank (150) through the connecting pipe (153).

6. The liquid cooling system according to claim 5, characterized in that: The drainage pipe (170) is provided with a first interface (171), a second interface (173), a third interface (175) and a fourth interface (177) in sequence from bottom to top in the height direction; The first interface (171) is connected to the inlet of the liquid storage tank (150), the second interface (173) is connected to the outlet of the liquid cooling tank (113), the end of the connecting pipe (153) away from the liquid storage tank (150) is connected to the third interface (175), and the fourth interface (177) is configured to be connected to the external environment.

7. The liquid cooling system according to claim 6, characterized in that: There are multiple heat exchangers (130), and the multiple heat exchangers are connected between the power element (111) and the liquid cooling tank (113) in parallel and / or series. The exhaust hole (131) is provided at the highest position of all the heat exchangers (130); The bypass pipe (133) includes a main pipe (135) and a plurality of branch pipes (137) arranged on the main pipe (135), the plurality of branch pipes (137) are connected to the plurality of exhaust holes (131) in a one-to-one correspondence, and the main pipe (135) is connected to the connecting pipe (153).

8. The liquid cooling system according to claim 7, characterized in that: The heat exchanger (130) includes a heat exchanger body (139), a flow collecting structure (141) and an exhaust component (143); The heat exchanger body (139) is provided with a plurality of flow channels, and the flow collecting structure (141) is provided on the heat exchanger body (139); The fluid collecting structure (141) has a liquid inlet channel (145) and a liquid outlet channel (147) that are independent of each other; The inlets of all the flow channels are connected to the liquid inlet channel (145), and the outlets of all the flow channels are connected to the liquid outlet channel (147); The inlet of the heat exchanger (130) is arranged on the manifold structure (141) and is in communication with the liquid inlet channel (145); the outlet of the heat exchanger (130) is arranged on the manifold structure (141) and is in communication with the liquid outlet channel (147); The top wall of the collecting structure (141) is provided with a first connecting hole (148) and a second connecting hole (149), the first connecting hole (148) is connected to the liquid inlet channel (145), and the second connecting hole (149) is connected to the liquid outlet channel (147), the exhaust component (143) is installed on the collecting structure (141), the exhaust hole (131) is provided on the exhaust component (143), and the first connecting hole (148) and the second connecting hole (149) are both connected to the exhaust hole (131).

9. The liquid cooling system according to claim 8, characterized in that: The inlet of the heat exchanger (130) is arranged near the top of the heat exchanger (130), and the outlet of the heat exchanger (130) is arranged near the bottom of the heat exchanger (130).

10. The liquid cooling system according to claim 9, characterized in that: The liquid cooling system further includes a container (115) and a fan (117); The container (115) is provided with an installation notch and a fixing notch; The heat exchanger (130) is installed in the installation notch, the fan (117) is installed in the fixing notch, and the fan (117) is configured to dissipate heat for the heat exchanger (130); The power element (111) and the liquid cooling tank (113) are arranged in the container (115).

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