Water tank and cooling system

The water tank design with a balance chamber and adjusting member addresses the issue of diaphragm rupture by regulating pressure through coolant flow, ensuring continuous operation and protection against enclosure damage.

JP2026075048APending Publication Date: 2026-05-07FULIAN PRESION ELECTRONICS (TIANJIN) CO LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
FULIAN PRESION ELECTRONICS (TIANJIN) CO LTD
Filing Date
2025-09-05
Publication Date
2026-05-07

AI Technical Summary

Technical Problem

The existing water tanks used in cooling systems, which regulate pressure through a rubber diaphragm, are prone to rupture due to long-term use, leading to potential damage to the system and inability to maintain pressure regulation, which can harm connected servers.

Method used

A water tank design with a balance chamber and reservoir, equipped with an adjusting member, allows coolant to flow in and out to regulate pressure, preventing thermal expansion or contraction of the enclosure body, thus maintaining pressure equilibrium and protecting the system from damage.

Benefits of technology

The new design ensures continuous pressure regulation without diaphragm failure, enhancing reliability by preventing enclosure damage and rapid cooling of the system reservoir tank.

✦ Generated by Eureka AI based on patent content.

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Abstract

It provides a water tank with adjustable pressure and a cooling system. [Solution] The water tank includes a casing and a regulating member, the casing comprising a balance chamber, a liquid storage cavity, a first inlet, a first outlet, a second inlet, and a second outlet. The balance chamber and the liquid storage cavity are partitioned from each other, the first inlet and first outlet both communicate with the balance chamber, and the second inlet and second outlet both communicate with the liquid storage cavity. Cooling liquid in the system liquid storage tank flows into the balance chamber through the first inlet, reducing the pressure in the system liquid storage tank. The liquid storage cavity receives and stores cooled cooling liquid through the second inlet, cooling the balance chamber, and the cooling liquid is replenished in the system liquid storage tank through the second outlet. A regulating member is provided in the casing and communicates the balance chamber with the outside of the casing, regulating the pressure inside the balance chamber. The water tank regulates the pressure inside the balance chamber with the regulating member, maintaining equilibrium between the pressure in the balance chamber, the system liquid storage tank, and the outside of the casing, preventing thermal expansion or cold contraction of the casing.
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Description

Technical Field

[0001] This application belongs to the technical field of cooling systems, and particularly relates to a water tank and a cooling system.

Background Art

[0002] The water tank is connected to the system liquid storage tank via a pipe and regulates the pressure of the system liquid storage tank and the pipe. The current water tank has a sealed structure, and its interior is partitioned into two chambers of water and gas by a rubber diaphragm. When the pressure in the system liquid storage tank is greater than the pressure in the water tank, the liquid in the system liquid storage tank flows into the water tank through the pipe, and the rubber diaphragm deforms, thereby changing the proportion of water and gas in the water tank, and regulating the pressure in the water tank. However, the rubber diaphragm is prone to rupture after long-term use, which damages the water tank and makes it impossible to regulate the pressure in the water tank. When the water tank cannot regulate the pressure of the system liquid storage tank and the pipe, it is likely to cause damage to the server.

Summary of the Invention

[0003] In view of such a situation, there is a need to provide a water tank capable of regulating pressure.

[0004] Embodiments of this application provide a water tank for use in a cooling system. The cooling system includes a system reservoir tank, which stores a coolant that has absorbed heat. The water tank includes a casing and a regulating member, the casing comprising a balance chamber, a reservoir, a first inlet, a first outlet, a second inlet, and a second outlet. The balance chamber and the reservoir are partitioned from each other, the first inlet and the first outlet both communicate with the balance chamber, and the second inlet and the second outlet both communicate with the reservoir. The first inlet communicates with the system reservoir tank, allowing the coolant in the system reservoir tank to flow into the balance chamber through the first inlet to reduce the pressure in the system reservoir tank. The first outlet discharges the coolant from the balance chamber. The reservoir receives and stores the cooled coolant through the second inlet to cool the balance chamber. The second outlet communicates with the system liquid storage tank, so that the coolant in the liquid storage cavity is replenished into the system liquid storage tank through the second outlet. The adjustment member is provided in the housing and connects the balance chamber to the outside of the housing, and adjusts the pressure inside the balance chamber.

[0005] According to the water tank described above, when the system reservoir tank stores the coolant that has absorbed heat, the system reservoir tank expands due to thermal expansion, and the heat-absorbing coolant flows into the balance chamber through the first inlet, reducing the pressure inside the system reservoir tank and regulating the pressure within the system reservoir tank. After the heat-absorbing coolant flows into the balance chamber, regardless of the temperature of the heat-absorbing coolant, the regulating member adjusts the pressure inside the balance chamber, maintaining equilibrium between the balance chamber, the system reservoir tank, and the outside of the enclosure, preventing the balance chamber from expanding or contracting due to thermal expansion or contraction. This prevents damage to the system reservoir tank and the pipes connected to it, thus protecting the system reservoir tank. The enclosure, by storing the cooled coolant in the reservoir cavity, is advantageous in lowering the temperature of the balance chamber and regulating the pressure inside the balance chamber. The reservoir cavity replenishes the system reservoir tank with coolant through the second outlet, rapidly cooling the system reservoir tank and rapidly regulating the pressure inside the system reservoir tank. Compared to systems where pressure is regulated by the deformation of a rubber diaphragm inside the balance chamber, this system does not involve thermal expansion or cold contraction of the enclosure body. Therefore, there is no need to worry about damage to the enclosure body due to rubber diaphragm failure, and the water tank can continuously regulate pressure, resulting in high reliability.

[0006] In some embodiments, the balance chamber is located above the liquid storage cavity, and the adjustment member is located at the top of the box.

[0007] In some embodiments, the first inlet and the second outlet are provided at opposite ends of the box body.

[0008] In some embodiments, the box has a cubic shape that extends vertically.

[0009] In some embodiments, the water tank further comprises two first connecting members and two second connecting members. The first connecting members have a first passage, and both of the first connecting members are connected to the box body, and both of the first passages communicate with the balance chamber, corresponding to the first inlet and the first outlet, respectively. The first connecting members are for inserting a pipe, and the pipe communicates with the balance chamber through the first connecting members. The second connecting members have a second passage, and both of the second connecting members are connected to the box body, and both of the second passages communicate with the liquid storage cavity, corresponding to the second inlet and the second outlet, respectively. The second connecting members are for inserting a pipe, and the pipe communicates with the liquid storage cavity through the second connecting members.

[0010] In some embodiments, the first connecting member includes a body and a projection, the first passage is provided in the body, the outer diameter of the body is the same as the inner diameter of the pipe, and the projection is provided so as to surround the outer circumference of the body to increase friction between the pipe and the first connecting member.

[0011] In some embodiments, the adjusting member is a pressure regulating valve.

[0012] Embodiments of this application further provide a cooling system. The cooling system comprises a system liquid reservoir, a cooling tank, and the aforementioned water tank. The system liquid reservoir is for storing a cooling liquid that has absorbed heat, and the cooling tank is for storing a cooling liquid that has been cooled. The system liquid reservoir is in communication with the first inlet and the second outlet, and the cooling tank is in communication with the second inlet.

[0013] In the cooling system described above, the water tank is connected to the system liquid storage tank. When the system liquid storage tank stores coolant that has absorbed heat, the coolant flows into the water tank due to excessive pressure in the system liquid storage tank, releasing the pressure in the system liquid storage tank and protecting it. The cooling tank is connected to the water tank. The cooled coolant in the cooling tank can flow into the water tank before flowing into the system liquid storage tank, replenishing the water tank and the system liquid storage tank with cooled coolant, lowering the temperature of the water tank and the system liquid storage tank, reducing the pressure in the water tank and the system liquid storage tank, and preventing damage to the system liquid storage tank due to excessive pressure.

[0014] In some embodiments, the cooling system further comprises a cooling member. The cooling member communicates with the first outlet and the cooling tank, and the coolant in the balance chamber flows into the cooling member through the first outlet. The cooling member is for cooling the coolant, so that the coolant cooled by the cooling member flows into the cooling tank.

[0015] In some embodiments, the cooling system further comprises a water valve and a pipe. The pipe connects the system reservoir tank to the first inlet, the system reservoir tank to the second outlet, and the cooling tank to the second inlet. The water valve is attached to the pipe between the system reservoir tank and the second outlet and controls the flow direction of the coolant in the reservoir cavity. [Brief explanation of the drawing]

[0016] [Figure 1] This is a schematic diagram of a cooling system according to one embodiment of the present application. [Figure 2] This is a schematic local diagram of a cooling system according to one embodiment of the present application. [Figure 3] This is a schematic diagram of the structure of a water tank according to one embodiment of this application. [Figure 4] This is a front view of the water tank shown in Figure 3. [Figure 5] This is a schematic diagram of the local structure of the water tank shown in Figure 3. [Modes for carrying out the invention]

[0017] The embodiments of this application will be described in further detail below with reference to the attached drawings.

[0018] The technical scope of this application will be described below with reference to the attached drawings, but it is clear that the embodiments described are only some of the embodiments of this application, and not all of them.

[0019] Furthermore, when an element is described as being "connected" to another element, that element may be directly connected to the other element, or there may be other elements in between. When an element is described as being "mounted" on another element, that element may be directly mounted on the other element, or there may be other elements in between. In this application, unless otherwise specifically defined and limited, terms such as "attach," "connect," etc., should be understood in a broad sense, and may include, for example, permanent connection, detachable connection, or integral connection. The connection here may be mechanical, direct, indirect through an intermediate medium, or internal communication between two elements. Those skilled in the art will be able to understand the specific meaning of the above terms in this application, depending on the specific circumstances.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the field relating to this application. The terms used herein are for the purpose of describing specific embodiments and are not intended to limit this application.

[0021] In the description of the embodiments of the present application, technical terms such as "first" and "second" are used only to distinguish different objects, and should not be understood as indicating or implying relative importance, or indicating the number of technical features implied, a specific order or priority.

[0022] When described as "embodiment" in this specification, the specific features, structures or characteristics described together with the embodiment may be included in at least one embodiment of the present application. Even if this term appears in various places in the specification, it does not necessarily refer to the same embodiment. Unless they are contradictory to each other, various embodiments of the present application can be combined with each other.

[0023] Note that the dimensions such as the thickness, length, width of various components in the embodiments of the present application shown in the drawings, and the overall thickness, length, width, etc. of the integrated device are exemplary and do not limit the present application in any way.

[0024] The water tank is connected to the system liquid storage tank via a pipe and adjusts the pressure of the system liquid storage tank and the pipe. The current water tank has a sealed structure, and its interior is partitioned into two chambers of water and gas by a rubber diaphragm. When the pressure in the system liquid storage tank is greater than the pressure in the water tank, the liquid in the system liquid storage tank flows into the water tank through the pipe, and the rubber diaphragm deforms, changing the proportion of water and gas in the water tank, thereby adjusting the pressure in the water tank. However, the rubber diaphragm is likely to rupture after long-term use, which damages the water tank and makes it impossible to adjust the pressure in the water tank. When the water tank cannot adjust the pressure of the system liquid storage tank and the pipe, it is likely to cause damage to the server.

[0025] Embodiments of the present application provide a water tank whose pressure can be adjusted. The water tank is used in a cooling system, and the cooling system includes a system liquid storage tank that stores a coolant that has absorbed heat. The water tank includes a box body and an adjusting member. The box body includes a balance chamber, a liquid storage chamber, a first inlet, a first outlet, a second inlet, and a second outlet. The balance chamber and the liquid storage chamber are partitioned from each other. The first inlet and the first outlet both communicate with the balance chamber, and the second inlet and the second outlet both communicate with the liquid storage chamber. The first inlet communicates with the system liquid storage tank, and the coolant in the system liquid storage tank flows into the balance chamber through the first inlet, reducing the pressure in the system liquid storage tank. The first outlet is for discharging the coolant in the balance chamber. The liquid storage chamber receives and stores the cooled coolant through the second inlet and cools the balance chamber. The second outlet communicates with the system liquid storage tank, and the coolant in the liquid storage chamber is replenished into the system liquid storage tank through the second outlet. The adjusting member is provided on the box body, communicates the balance chamber with the outside of the box body, and adjusts the pressure in the balance chamber.

[0026] According to the water tank described above, when the system reservoir tank stores the coolant that has absorbed heat, the system reservoir tank expands due to thermal expansion, and the heat-absorbing coolant flows into the balance chamber through the first inlet, reducing the pressure inside the system reservoir tank and regulating the pressure within the system reservoir tank. After the heat-absorbing coolant flows into the balance chamber, regardless of the temperature of the heat-absorbing coolant, the regulating member adjusts the pressure inside the balance chamber, maintaining equilibrium between the balance chamber, the system reservoir tank, and the outside of the enclosure, preventing the balance chamber from expanding or contracting due to thermal expansion or contraction. This prevents damage to the system reservoir tank and the pipes connected to it, thus protecting the system reservoir tank. The enclosure, by storing the cooled coolant in the reservoir cavity, is advantageous in lowering the temperature of the balance chamber and regulating the pressure inside the balance chamber. The reservoir cavity replenishes the system reservoir tank with coolant through the second outlet, rapidly cooling the system reservoir tank and rapidly regulating the pressure inside the system reservoir tank. Compared to systems where pressure is regulated by the deformation of a rubber diaphragm inside the balance chamber, this system does not involve thermal expansion or cold contraction of the enclosure body. Therefore, there is no need to worry about damage to the enclosure body due to rubber diaphragm failure, and the water tank can continuously regulate pressure, resulting in high reliability.

[0027] The embodiments of this application will be described in further detail below with reference to the drawings.

[0028] As shown in Figure 1, an embodiment of the present application provides a cooling system 200 and a water tank 100. The cooling system 200 comprises a system liquid reservoir 210, a cooling tank 220, and a water tank 100. The system liquid reservoir 210 stores a coolant that has absorbed heat. The cooling tank 220 stores a cooled coolant. The cooling tank 220 communicates with the water tank 100, allowing the cooling tank 220 to supply the cooled coolant to the water tank 100. The system liquid reservoir 210 communicates with the water tank 100, allowing the water tank 100 to receive the coolant that has absorbed heat and regulate the pressure in the system liquid reservoir 210, and also allowing the water tank 100 to replenish the system liquid reservoir 210 with cooled coolant, thereby regulating the pressure in the system liquid reservoir 210 more quickly.

[0029] In some embodiments, the cooling system 200 is used in a server system, which includes a server 300 and a refrigerator. When the server 300 is in operation, it generates heat, and the low-temperature coolant produced by the refrigerator flows through the server 300, cooling it. The coolant that flows through the server 300 absorbs heat and its temperature rises, becoming a heat-absorbing coolant. The low-temperature coolant produced by the refrigerator is a cooled coolant.

[0030] After the coolant flows through the server 300 and absorbs heat, it flows into the system fluid tank 210, increasing the pressure inside the system fluid tank 210. Since the water tank 100 is connected to the system fluid tank 210, if the pressure inside the system fluid tank 210 becomes too high, the hot coolant in the system fluid tank 210 flows into the water tank 100, releasing the pressure in the system fluid tank 210. At the same time, since the water tank 100 is connected to the cooling tank 220, the cooled coolant in the cooling tank 220 flows into the water tank 100 before flowing into the system fluid tank 210, cooling both the water tank 100 and the system fluid tank 210, reducing the pressure inside both, preventing damage to the system fluid tank 210 due to excessive pressure, and improving the lifespan of the server 300 system.

[0031] As shown in Figure 2, the water tank 100 comprises a box 10 and an adjustment member 20. The box 10 includes a balance chamber 11 and a liquid storage cavity 12, which are separated from each other. The balance chamber 11 receives the coolant that has absorbed heat, reducing the pressure in the system liquid storage tank 210. The liquid storage cavity 12 stores the cooled coolant, cooling the balance chamber 11 and reducing the pressure in the balance chamber 11. The adjustment member 20 adjusts the pressure in the balance chamber 11.

[0032] As shown in Figure 3, the enclosure 10 further includes a first inlet 101 and a first outlet 102, both of which communicate with the balance chamber 11. The first inlet 101 communicates with the system liquid storage tank 210, allowing the coolant that has absorbed heat from the system liquid storage tank 210 to flow into the balance chamber 11 through the first inlet 101, thereby reducing the pressure in the system liquid storage tank 210. The first outlet 102 discharges the coolant from the balance chamber 11. The adjustment member 20 is provided in the enclosure 10 and communicates the balance chamber 11 with the outside of the enclosure 10, adjusting the pressure inside the balance chamber 11.

[0033] The enclosure 10 further includes a second inlet 103 and a second outlet 104, both of which communicate with the liquid storage chamber 12. The liquid storage chamber 12 receives and stores cooled coolant through the second inlet 103, replenishing the coolant in the liquid storage chamber 12 and cooling the balance chamber 11. The second outlet 104 communicates with the system liquid storage tank 210, and the coolant in the liquid storage chamber 12 is replenished into the system liquid storage tank 210 through the second outlet 104, lowering the temperature of the system liquid storage tank 210 and allowing the pressure inside the system liquid storage tank 210 to decrease more quickly.

[0034] When the system liquid storage tank 210 stores the coolant that has absorbed heat, the system liquid storage tank 210 expands due to thermal expansion, and the heat-absorbing coolant flows into the balance chamber 11, releasing the pressure in the system liquid storage tank 210, returning the system liquid storage tank 210 to its original state and providing a protective effect on the system liquid storage tank 210. At this time, if the pressure in the balance chamber 11 becomes greater than the pressure outside the box body 10, the adjustment member 20 discharges the gas in the balance chamber 11, releasing the pressure in the balance chamber 11. When the liquid storage cavity 12 replenishes the system liquid storage tank 210 with cooled coolant, the system liquid storage tank 210 cools down, releasing the pressure more quickly and returning to its original state. If the coolant in the liquid storage cavity 12 becomes insufficient, the cooling tank 220 replenishes the liquid storage cavity 12 with cooled coolant.

[0035] In some embodiments, the adjustment member 20 is a pressure regulating valve. The pressure regulating valve senses the pressure in the balance chamber 11, and if the pressure in the balance chamber 11 is greater than the pressure outside the box 10, the pressure regulating valve discharges the gas in the balance chamber 11, reducing the pressure in the balance chamber 11. If the pressure in the balance chamber 11 is less than the pressure outside the box 10, the pressure regulating valve allows outside gas to flow into the balance chamber 11, increasing the pressure in the balance chamber 11. Compared to the conventional method in which the balance chamber 11 regulates pressure by deformation of a rubber diaphragm, the box 10 equipped with the adjustment member 20 does not undergo thermal expansion or cold contraction, so there is no need to worry about damage to the box 10 due to breakage of the rubber diaphragm, and the reliability of the water tank 100 is high.

[0036] In some embodiments, referring to Figure 1, the cooling system 200 further includes a cooling member 230 to process the coolant discharged from the first outlet 102. The cooling member 230 communicates with the first outlet 102, and the coolant in the balance chamber 11 flows into the cooling member 230 through the first outlet 102, where the cooling member 230 cools the coolant. To recycle the coolant discharged from the first outlet 102, the cooling member 230 communicates with a cooling tank 220, and the coolant cooled by the cooling member 230 flows into the cooling tank 220, where the cooling tank 220 stores the cooled coolant for use as a reserve.

[0037] In some embodiments, referring to Figure 2, the coolant discharged from the first outlet 102 is discharged into a wastewater pipe for disposal.

[0038] In some embodiments, the cooling system 200 further includes a water valve 250 and a pipe 240. The pipe 240 connects the system liquid storage tank 210 to a first inlet 101, the system liquid storage tank 210 to a second outlet 104, and the cooling tank 220 to a second inlet 103. The water valve 250 is attached to the pipe 240 between the system liquid storage tank 210 and the second outlet 104 to control the flow direction of the coolant in the storage cavity 12 and prevent the coolant that has absorbed heat in the system liquid storage tank 210 from flowing into the storage cavity 12.

[0039] In some embodiments, to better control the flow of the coolant, a water valve 250 is installed in the pipe 240 between the system reservoir tank 210 and the first inlet 101, allowing or restricting the flow of coolant from the system reservoir tank 210 into the balance chamber 11.

[0040] In some embodiments, referring to Figure 1, a first outlet 102 is connected to a cooling member 230, and the cooling member 230 is connected to a cooling tank 220, both by pipes 240. The cooling member 230 cools the coolant, and the cooled coolant flows into the cooling tank 220 for storage. Water valves 250 can be installed in the pipes 240 between the first outlet 102 and the cooling member 230, and in the pipes 240 between the cooling member 230 and the cooling tank 220, to control the flow of the coolant.

[0041] In some embodiments, referring to Figures 3 and 4, the box body 10 has a cubic shape that extends vertically. This makes it easy to form two separate chambers, the balance chamber 11 and the liquid storage chamber 12, and makes it easy to control the size of the balance chamber 11 and the liquid storage chamber 12.

[0042] In some embodiments, the box 10 may be a cuboid, a rectangular prism, or a cylinder. The box 10 divides the balance chamber 11 and the liquid storage chamber 12 into two separate chambers, and since the box 10 is made of a non-deformable material, the size of the chambers of the balance chamber 11 and the liquid storage chamber 12 does not change. The size of the balance chamber 11 may be larger than the size of the liquid storage chamber 12, thereby allowing the balance chamber 11 to adjust the pressure of the system liquid storage tank 210 more quickly. The size of the liquid storage chamber 12 may also be larger than the size of the balance chamber 11, thereby allowing it to hold more cooled coolant. Specifically, the configuration can be selected according to the actual usage conditions.

[0043] In some embodiments, the balance chamber 11 is located above the liquid storage cavity 12, and the adjustment member 20 is located at the top of the box body 10. Since hot air always rises, placing the balance chamber 11 above the liquid storage cavity 12 prevents the liquid storage cavity 12 from obstructing the balance chamber 11, allowing the adjustment member 20 to release pressure from within the balance chamber 11 and quickly adjust the pressure within the balance chamber 11.

[0044] In some embodiments, the liquid storage chamber 12 may be installed to the left, right, or other location of the balance chamber 11. It is sufficient that the balance chamber 11 and the liquid storage chamber 12 are separated from each other, and the specific arrangement can be selected according to the actual usage conditions. For example, by installing the balance chamber 11 in a ring around the liquid storage chamber 12, the balance chamber 11 can be cooled down quickly.

[0045] In some embodiments, the first inlet 101 and the second outlet 104 are located at opposite ends of the box 10. The first inlet 101 and the first outlet 102 are located at the upper end of the box 10, and the first inlet 101 and the first outlet 102 are located on opposite sides of the box 10, allowing the balance chamber 11 to communicate with the system liquid storage tank 210 and the cooling member 230 via the pipe 240. The second inlet 103 and the second outlet 104 are located at the lower end of the box 10, and the second inlet 103 and the second outlet 104 are located on opposite sides of the box 10, allowing the liquid storage cavity 12 to communicate with the system liquid storage tank 210 and the cooling tank 220 via the pipe 240. When the coolant flows into the system storage tank 210 via the pipe 240 from one end of the storage cavity 12 away from the balance chamber 11, the coolant at the end away from the balance chamber 11 is less affected by the balance chamber 11, resulting in a lower temperature for the coolant supplied to the system storage tank 210, which is advantageous for cooling the system storage tank 210.

[0046] In some embodiments, referring to Figures 4 and 5, the water tank 100 further comprises two first connecting members 13 and two second connecting members 14. The first connecting members 13 have a first passage 1301. Both first connecting members 13 are connected to the box body 10, and the two first passages 1301 both communicate with the balance chamber 11, corresponding to a first inlet 101 and a first outlet 102, respectively. The first connecting members 13 are for inserting a pipe 240, which can communicate with the balance chamber 11 through the first connecting members 13. Here, the pipe 240 is connected to a system liquid reservoir 12 or a cooling member 230, and the system liquid reservoir tank 210 and the cooling member 230 can communicate with the balance chamber 11 via the pipe 240 and the first connecting members 13. Compared to a direct connection via the first inlet 101 or the first outlet 102, inserting the pipe 240 into the first connecting member 13 makes it less likely for the coolant to leak when flowing through the connection between the pipe 240 and the water tank 100.

[0047] In some embodiments, the second connecting member 14 has a second passage. Two second connecting members 14 are both connected to the box body 10, and the two second passages both communicate with the liquid storage cavity 12, corresponding to the second inlet 103 and the second outlet 104, respectively. The second connecting member 14 is for inserting a pipe 240, which can communicate with the liquid storage cavity 12 through the second connecting member 14. Here, the pipe 240 is connected to the system liquid storage cavity 12 or a cooling pipe, and the system liquid storage tank 210 and the cooling tank 220 can communicate with the liquid storage cavity 12 via the pipe 240 and the second connecting member 14. Compared to a direct connection via the second inlet 103 or the second outlet 104, inserting the pipe 240 into the second connecting member 14 reduces leakage of the cooling liquid as it flows through the connection between the pipe 240 and the water tank 100.

[0048] In some embodiments, the first connecting member 13 includes a body 131 and a projection 132. A first passage 1301 is provided in the body 131. The outer diameter of the body 131 is the same as the inner diameter of the pipe 240, and when the first connecting member 13 is inserted into the body 131, the pipe 240 fits onto the outer circumference of the body 131. The projection 132 is provided so as to surround the outer circumference of the body 131, increasing friction between the pipe 240 and the first connecting member 13, and preventing the pipe 240 from falling out of the body 131. The structure of the second connecting member 14 is the same as that of the first connecting member 13, and therefore will not be described again here.

[0049] The above description is merely a specific embodiment of the present application and does not limit the scope of protection of this application. Any modification or substitution within the technical scope disclosed in this application should be included within the scope of protection of this application. [Explanation of symbols]

[0050] 100: Water tank; 10: Box body; 11: Balance chamber; 12: Liquid storage cavity; 101: First inlet; 102: First outlet; 103: Second inlet; 104: Second outlet; 13: First connecting member; 1301: First passage; 131: Main body; 132: Protrusion; 14: Second connecting member

Claims

1. A water tank for a cooling system, wherein the cooling system includes a system liquid storage tank, the system liquid storage tank stores a cooling liquid that has absorbed heat, and the water tank includes a casing and an adjustment member. The box includes a balance chamber, a liquid storage cavity, a first inlet, a first outlet, a second inlet, and a second outlet, wherein the balance chamber and the liquid storage cavity are partitioned from each other, the first inlet and the first outlet both communicate with the balance chamber, the second inlet and the second outlet both communicate with the liquid storage cavity, the first inlet communicates with the system liquid storage tank, the coolant in the system liquid storage tank flows into the balance chamber through the first inlet to reduce the pressure in the system liquid storage tank, the first outlet is for discharging the coolant in the balance chamber, the liquid storage cavity receives and stores the cooled coolant through the second inlet to cool the balance chamber, the second outlet communicates with the system liquid storage tank, and the coolant in the liquid storage cavity is replenished into the system liquid storage tank through the second outlet. The water tank is characterized in that the adjustment member is provided in the box body, connects the balance chamber to the outside of the box body, and adjusts the pressure inside the balance chamber.

2. The water tank according to claim 1, characterized in that the balance chamber is provided above the liquid storage cavity and the adjustment member is provided at the top of the box.

3. The water tank according to claim 2, characterized in that the first inlet and the second outlet are provided at opposite ends of the box body.

4. The water tank according to claim 3, characterized in that the box body has a cubic shape extending in the vertical direction.

5. The water tank further comprises two first connecting members and two second connecting members, the first connecting members having a first passage, both first connecting members connected to the box body, and the two first passages both communicating with the balance chamber corresponding to the first inlet and the first outlet, respectively, the first connecting members are for inserting pipes, the pipes communicating with the balance chamber through the first connecting members, The water tank according to claim 1, characterized in that the second connecting member has a second passage, both of the second connecting members are connected to the box body, and both of the second passages communicate with the liquid storage cavity, corresponding to the second inlet and the second outlet, respectively, and the second connecting member is for inserting a pipe, and the pipe communicates with the liquid storage cavity through the second connecting member.

6. The water tank according to claim 5, characterized in that the first connecting member includes a main body and a projection, the first passage is provided in the main body, the outer diameter of the main body is the same as the inner diameter of the pipe, and the projection is provided so as to surround the outer circumference of the main body to increase friction between the pipe and the first connecting member.

7. The water tank according to claim 1, characterized in that the adjusting member is a pressure regulating valve.

8. A cooling system comprising a system liquid storage tank, a cooling tank, and a water tank according to any one of claims 1 to 7, The aforementioned system storage tank stores the cooling liquid that has absorbed heat. The aforementioned cooling tank stores the cooled coolant, A cooling system characterized in that the system liquid storage tank communicates with the first inlet and the second outlet, and the cooling tank communicates with the second inlet.

9. The cooling system according to claim 8, further comprising a cooling member, the cooling member communicating with the first outlet and the cooling tank, the cooling liquid in the balance chamber flowing into the cooling member through the first outlet, the cooling member being for cooling the cooling liquid, and the cooling liquid cooled by the cooling member flowing into the cooling tank.

10. The cooling system according to claim 8, further comprising a water valve and a pipe, wherein the pipe is for connecting the system liquid storage tank to the first inlet, the system liquid storage tank to the second outlet, and the cooling tank to the second inlet, and the water valve is attached to the pipe between the system liquid storage tank and the second outlet to control the flow direction of the cooling liquid in the liquid storage cavity.