JP-2026075048-A - Water tank and cooling system

JP2026075048AJP 2026075048 AJP2026075048 AJP 2026075048AJP-2026075048-A

Abstract

[Problem] To provide a water tank and cooling system with adjustable pressure. [Solution] The water tank includes a box and a regulating member, the box 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 box and communicates the balance chamber with the outside of the box, 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 inside the balance chamber, the system liquid storage tank, and the outside of the box, preventing thermal expansion or cold contraction of the box. [Selection Diagram] Figure 1

Inventors

▲セン▼ 金翰
劉宗麟
丁 ▲いく▼嘉
白家南

Assignees

富聯精密電子（天津）有限公司

Dates

Publication Date: 20260507
Application Date: 20250905
Priority Date: 20241021

Claims (10)

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.
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 body.
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-shaped structure.
The water tank according to claim 3, characterized in that the box-shaped body has a cubic shape extending vertically.
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.
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, thereby increasing friction between the pipe and the first connecting member.
The water tank according to claim 1, characterized in that the adjusting member is a pressure regulating valve.
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.
The cooling system further comprises 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, as described in claim 8.
The cooling system further comprises a water valve and a pipe, the pipe being for connecting the system liquid reservoir tank to the first inlet, the system liquid reservoir tank to the second outlet, and the cooling tank to the second inlet, and the water valve being attached to the pipe between the system liquid reservoir tank and the second outlet to control the flow direction of the cooling liquid in the reservoir cavity, as described in claim 8.

Description

This application belongs to the technical field of cooling systems, and more particularly to water tanks and cooling systems. The water tank is connected to the system fluid tank via a pipe, regulating the pressure in both the system fluid tank and the pipe. The current water tank has a sealed structure, with its interior divided into two chambers—one for water and one for gas—by a rubber diaphragm. When the pressure in the system fluid tank is greater than the pressure in the water tank, the liquid from the system fluid tank flows into the water tank through the pipe, deforming the rubber diaphragm and changing the ratio of water to gas within the water tank, thereby regulating the pressure. However, the rubber diaphragm is prone to rupture with prolonged use, damaging the water tank and preventing it from regulating pressure. When the water tank can no longer regulate the pressure in the system fluid tank and pipe, it is likely to cause damage to the server. Considering these circumstances, it is necessary to provide a water tank with adjustable pressure. Embodiments of this application provide a water tank for use in a cooling system. The cooling system includes a system storage 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 storage cavity, a first inlet, a first outlet, a second inlet, and a second outlet. The balance chamber and the storage cavity 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 storage cavity. The first inlet communicates with the system storage tank, allowing the coolant in the system storage tank to flow into the balance chamber through the first inlet to reduce the pressure in the system storage tank. The first outlet discharges the coolant from the balance chamber. The storage cavity receives and stores the cooled coolant through the second inlet to cool the balance chamber. The second outlet communicates with the system fluid storage tank, ensuring that the coolant in the fluid storage chamber is replenished into the system fluid 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, regulating the pressure within the balance chamber. 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 thermal expansion or contraction of the balance chamber. This prevents damage to the system reservoir tank and the pipes connected to it, thus protecting the system reservoir tank. The enclosure, by storing cooled coolant in its 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 within it. Compared to systems where pressure is regulated by the deformation of a rubber diaphragm inside the balance chamber, this system eliminates the risk of damage to the enclosure due to rubber diaphragm failure, as the enclosure does not undergo thermal expansion or cold contraction. This allows the water tank to continuously regulate pressure, resulting in high reliability. 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. In some embodiments, the first inlet and the second outlet are located at opposite ends of the box. In some embodiments, the box has a cubic shape extending vertically. 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, both of which are connected to the box body, and both of the first passages communicate with the balance chamber, corresponding to the first inlet and 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, both of which are connected to the box body, and both of the secon