Submerged liquid cooling liquid level control structure based on overflow detection

By installing a detection and control module and a liquid level control module on one side of the liquid cooling tank, the overflow status is detected by float and switch, and the liquid pump and alarm are automatically controlled. This solves the problem of non-real-time liquid level monitoring in the immersion liquid cooling system and realizes real-time liquid level control and automatic overflow handling.

CN224569467UActive Publication Date: 2026-07-28ZHEJIANG XINHAN INTELLIGENT TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG XINHAN INTELLIGENT TECHNOLOGY CO LTD
Filing Date
2025-10-21
Publication Date
2026-07-28

AI Technical Summary

Technical Problem

Existing immersion liquid cooling systems lack real-time liquid level monitoring, which can easily lead to coolant overflow. Furthermore, the automatic control has low precision and complex logic, posing a risk of false triggering or missed triggering, resulting in coolant waste and equipment failure.

Method used

A detection and control module, an alarm, and a liquid level control module are installed on one side of the liquid-cooled tank. The overflow status is detected by a float and a switch, and the operation of the liquid pump and the alarm is automatically controlled to achieve real-time control of the liquid level.

Benefits of technology

It enables real-time monitoring and control of coolant level, avoids overflow, reduces coolant waste and equipment failure risk, and improves system reliability and response speed.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to liquid cooling heat dissipation technical field especially for the immersion liquid cooling liquid level control structure based on overflow detection, including liquid cooling box body and the box cover of fixed connection at the top of liquid cooling box body, the side of liquid cooling box body is fixedly connected with detection control module, alarm and liquid level control module respectively, detection control module can realize the detection of liquid cooling box body overflow state, and through the switch in its inside according to the overflow state of liquid cooling box body respectively control alarm and liquid level control module work, wherein: Detection control module includes standpipe. The utility model is through installing detection control module, alarm and liquid level control module on the side of liquid cooling box body, and detection control module can realize the real -time detection of liquid level in liquid cooling box body, can automatically control alarm and liquid level control module work when cooling liquid overflow, realizes the real -time regulation and control of cooling liquid liquid level, solved the problem that present stage device does not have liquid level control function.
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Description

Technical Field

[0001] This utility model relates to the field of liquid cooling technology, specifically to an immersion liquid cooling level control structure based on overflow detection. Background Technology

[0002] As electronic devices evolve towards higher power and higher density, traditional air cooling is no longer sufficient to meet the demands for efficient heat dissipation. Immersion liquid cooling, with its advantages of high heat dissipation efficiency and low noise, is gradually becoming the mainstream cooling method. However, existing immersion liquid cooling systems have the following problems in actual operation: First, the coolant level lacks a real-time monitoring mechanism. When the equipment generates heat, causing the coolant to expand thermally, or when excessive replenishment is performed, coolant overflow is likely to occur. This not only wastes coolant but may also seep into the equipment, causing short circuits, corrosion, and other malfunctions. Second, some level control structures rely solely on manual inspection, resulting in delayed response and an inability to promptly handle sudden overflow problems, while also incurring high labor costs. Third, a few structures with automatic control functions suffer from low detection accuracy and complex control logic. For example, when using pressure sensors to detect the liquid level, they are easily affected by changes in coolant temperature, leading to false triggering or missed triggering, resulting in insufficient reliability. These shortcomings necessitate improvements. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides an immersion liquid cooling level control structure based on overflow detection. By installing a detection and control module, an alarm, and a level control module on one side of the liquid cooling tank, the detection and control module can realize real-time detection of the liquid level in the liquid cooling tank. When the coolant overflows, it can automatically control the alarm and the level control module to work, thereby realizing real-time control of the coolant level and solving the problem that the current devices do not have the function of level control.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] An immersion liquid cooling level control structure based on overflow detection includes a liquid cooling tank and a cover fixedly connected to the top of the liquid cooling tank. A detection and control module, an alarm, and a level control module are fixedly connected to one side of the liquid cooling tank. The detection and control module can detect the overflow status of the liquid cooling tank and control the alarm and level control module respectively according to the overflow status of the liquid cooling tank through an internal switch. The detection and control module includes a vertical pipe and a horizontal pipe connected to the bottom of the vertical pipe. The horizontal pipe is connected to a detection port on one side of the liquid cooling tank. A float is movably installed inside the vertical pipe, and a lever is fixedly connected to the upper surface of the float. A screw is used to connect the vertical pipe to the outer wall. The unit is fixedly connected to a mounting bracket, which extends into the vertical pipe and has a switch installed at the corresponding position of the toggle block. The liquid level control module includes a pump and a storage tank fixedly connected to one side of the liquid cooling tank. A pumping pipe connects the inlet of the pump to the liquid cooling tank, and a connecting pipe connects the outlet of the pump to the inlet of the storage tank. The switch is electrically connected to the pump and the alarm of the liquid level control module. When the coolant overflows and the liquid level in the liquid cooling tank rises, the float in the vertical pipe moves upward with the liquid level, causing the toggle block to contact the switch, triggering the switch and controlling the pump to start to draw excess coolant from the liquid cooling tank into the storage tank. At the same time, the alarm is activated to issue a warning signal.

[0008] Furthermore, the float comprises a lightweight aluminum layer and a foam filling layer, the foam filling layer being wrapped inside the lightweight aluminum layer, and the outer diameter of the float being adapted to the inner diameter of the vertical pipe, ensuring that the float moves stably up and down along the inner wall of the vertical pipe.

[0009] Furthermore, two stop plates are symmetrically fixedly connected to the inner side of the vertical pipe. The two stop plates are horizontal and spaced apart, located directly below the float, which not only limits the downward movement of the float but also does not obstruct the coolant flow channel inside the vertical pipe.

[0010] Furthermore, one side of the horizontal tube is integrally formed with a raised edge, which is fixedly connected to the outer wall of the liquid cooling box by bolts, and a sealing gasket is provided at the connection between the raised edge and the liquid cooling box.

[0011] Furthermore, the bottom of the storage box is connected to a drain pipe, and a valve is installed on the drain pipe.

[0012] Furthermore, two symmetrically distributed handles are fixedly connected to the upper surface of the box cover, and a liquid inlet pipe is connected to the box cover, with a protective cap on the top of the liquid inlet pipe.

[0013] Furthermore, heat dissipation fins are provided on both sides of the liquid-cooled box at equal intervals.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides an immersion liquid cooling level control structure based on overflow detection, which has the following beneficial effects:

[0016] This invention relates to a detection and control module, an alarm, and a liquid level control module installed on one side of a liquid cooling tank. The detection and control module consists of a vertical pipe, a horizontal pipe, a float, a lever, a switch, and a mounting bracket. The horizontal pipe is connected to the detection port of the liquid cooling tank, allowing coolant to flow within both the horizontal and vertical pipes. When coolant overflows, the float rises with the liquid level, causing the lever to contact the switch. The switch is electrically connected to the alarm and the pump, controlling both to activate. The alarm sounds an alarm, and the pump removes excess coolant from the tank and transfers it to a storage tank. This real-time control of the coolant level within the liquid cooling tank prevents overflow and provides excellent performance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is an internal cross-sectional view of the detection and control module in this utility model;

[0019] Figure 3 This is an internal cross-sectional view of the float in this utility model;

[0020] Figure 4 This is a schematic diagram of the liquid level control module in this utility model.

[0021] In the diagram: 1. Liquid-cooled housing; 2. Detection and control module; 201. Vertical pipe; 202. Horizontal pipe; 203. Raised edge; 204. Stop plate; 205. Float block; 2051. Lightweight aluminum layer; 2052. Foam filling layer; 206. Toggle block; 207. Switch; 208. Mounting bracket; 3. Housing cover; 4. Handle; 5. Liquid inlet pipe; 6. Alarm device; 7. Heat dissipation fins; 8. Liquid level control module; 801. Liquid pump; 802. Storage tank; 803. Drain pipe; 804. Connecting pipe; 805. Liquid extraction pipe. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example

[0024] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, an embodiment of the present invention proposes an immersion liquid cooling level control structure based on overflow detection, including a liquid cooling tank 1 and a tank cover 3 fixedly connected to the top of the liquid cooling tank 1. A detection control module 2, an alarm 6, and a liquid level control module 8 are fixedly connected to one side of the liquid cooling tank 1. The detection control module 2 can detect the overflow state of the liquid cooling tank 1, and control the alarm 6 and the liquid level control module 8 to work according to the overflow state of the liquid cooling tank 1 through its internal switch 207. The detection control module 2 includes a vertical pipe 201 and a horizontal pipe 202 connected to the bottom of the vertical pipe 201. The horizontal pipe 202 is connected to the detection port on one side of the liquid cooling tank 1. A float 205 is movably arranged inside the vertical pipe 201, and a lever 206 is fixedly connected to the upper surface of the float 205. The outer wall of the vertical pipe 201 is connected to...

[0025] A mounting bracket 208 is bolted to the liquid level control module 8. The mounting bracket 208 extends into the vertical pipe 201 and a switch 207 is installed at the position corresponding to the toggle block 206. The liquid level control module 8 includes a pump 801 and a storage tank 802 fixedly connected to one side of the liquid cooling box 1. A pumping pipe 805 is connected between the inlet of the pump 801 and the liquid cooling box 1, and a connecting pipe 804 is connected between the outlet of the pump 801 and the inlet of the storage tank 802. The switch 207 is electrically connected to the pump 801 and the alarm 6 of the liquid level control module 8. When the coolant overflows and the liquid level in the liquid cooling box 1 rises, the float 205 in the vertical pipe 201 moves up with the liquid level, causing the toggle block 206 to contact the switch 207, triggering the switch 207 and controlling the pump 801 to start to draw excess coolant from the liquid cooling box 1 into the storage tank 802. At the same time, the alarm 6 is activated to issue a warning signal.

[0026] It should be noted that the liquid-cooled tank 1 is the main part of the device. The coolant in the liquid-cooled tank 1 flows into the horizontal pipe 202 through the detection port, and then enters the vertical pipe 201, realizing real-time synchronization between the liquid level in the vertical pipe 201 and the liquid level in the liquid-cooled tank 1. When the coolant shows an overflow tendency due to thermal expansion or excessive replenishment, the liquid level in the liquid-cooled tank 1 rises, and the liquid level in the vertical pipe 201 rises synchronously. The float 205 in the vertical pipe 201 rises with the liquid level due to buoyancy, driving the toggle block 206 at its top to move upward. When the liquid level reaches the overflow threshold, the toggle block 206 contacts the switch 207 on the mounting bracket 208, triggering the switch 207 to generate an electrical signal, and the switch 206... 07 transmits electrical signals to the alarm 6 and the liquid level control module 8's pump 801 respectively. On the one hand, the alarm 6 starts after receiving the signal, issuing a warning through sound and light to remind the staff to pay attention to the abnormal liquid level. On the other hand, the pump 801 starts, extracting excess coolant from the liquid cooling tank 1 through the extraction pipe 805, and then transporting it to the storage tank 802 for temporary storage through the connecting pipe 804. When the liquid level in the liquid cooling tank 1 drops to a safe range, the float 205 in the vertical pipe 201 moves down, the toggle block 206 separates from the switch 207, the switch 207 resets, and the pump 801 and the alarm 6 stop working, completing one liquid level control cycle.

[0027] like Figure 2 and Figure 3 As shown, in some embodiments, the float 205 includes a lightweight aluminum layer 2051 and a foam filling layer 2052. The foam filling layer 2052 is wrapped inside the lightweight aluminum layer 2051, and the outer diameter of the float 205 is adapted to the inner diameter of the vertical tube 201 to ensure that the float 205 moves stably up and down along the inner wall of the vertical tube 201.

[0028] It should be noted that the foam filling layer 2052 inside the float 205 has an extremely low density, providing sufficient buoyancy to ensure that the float 205 can flexibly rise and fall with changes in the coolant level. The outer lightweight aluminum layer 2051 enhances the structural strength of the float 205, preventing damage from collisions or compression during long-term up-and-down movement and extending its service life. The outer diameter of the float 205 is precisely matched with the inner diameter of the vertical tube 201, ensuring that the outer wall of the float 205 always fits against the inner wall of the vertical tube 201 when it moves within the vertical tube 201, preventing offset, tilting, or jamming. This ensures that the float 205 moves stably up and down along the inner wall of the vertical tube 201, thereby ensuring that the toggle block 206 can accurately contact or separate from the switch 207, avoiding detection and triggering errors.

[0029] like Figure 2 As shown, in some embodiments, two stop plates 204 are symmetrically fixedly connected to the inner side of the vertical pipe 201. The two stop plates 204 are horizontal and spaced apart, located directly below the float 205, which not only limits the downward movement of the float 205, but also does not block the coolant flow channel inside the vertical pipe 201.

[0030] It should be noted that when the liquid level in the liquid-cooled tank 1 drops to the minimum safe value, the float 205 moves down until it contacts the two horizontally spaced stop plates 204. The stop plates 204 support the float 205 to prevent it from moving down excessively due to gravity and blocking the connection between the horizontal pipe 201 and the vertical pipe 202, thus avoiding affecting the subsequent liquid level synchronization and detection functions.

[0031] like Figure 1 and Figure 2 As shown, in some embodiments, a flange 203 is integrally formed on one side of the horizontal tube 202. The flange 203 is fixedly connected to the outer wall of the liquid cooling box 1 by bolts, and a sealing gasket is provided at the connection between the flange 203 and the liquid cooling box 1.

[0032] It should be noted that the integrally formed protrusion 203 on one side of the horizontal tube 202 increases the contact area with the outer wall of the liquid cooling box 1. The protrusion 203 is fixed to the liquid cooling box 1 by bolts, which has good stability and is easy to disassemble and assemble. By setting a sealing gasket, it can prevent the leakage of coolant.

[0033] like Figure 4 As shown, in some embodiments, the bottom of the storage box 802 is connected to a drain pipe 803, and a valve is installed on the drain pipe 803.

[0034] It should be noted that when the coolant in the storage tank 802 reaches a certain amount, the staff can open the valve on the drain pipe 803 to discharge the coolant through the drain pipe 803. After filtration, testing and other treatments, the coolant can be returned to the liquid cooling box 1 for recycling, thereby reducing operating costs.

[0035] like Figure 1 As shown, in some embodiments, two symmetrically distributed handles 4 are fixedly connected to the upper surface of the box cover 3, and a liquid inlet pipe 5 is connected to the box cover 3, with a protective cap provided on the top of the liquid inlet pipe 5.

[0036] It should be noted that the two symmetrically distributed handles 4 on the cover 3 provide the staff with a point of force to easily open or close the cover 3, which facilitates the inspection, maintenance or replacement of coolant for the equipment inside the liquid cooling box 1. The cover 3 is connected to a liquid inlet pipe 5 for easy addition of coolant. The top of the liquid inlet pipe 5 is equipped with a protective cap for safety protection.

[0037] like Figure 1 As shown, in some embodiments, heat dissipation fins 7 are provided on both sides of the liquid cooling box 1 at equal intervals.

[0038] It should be noted that the heat dissipation fins 7 can assist the liquid cooling housing 1 in heat dissipation, thus serving the purpose of auxiliary heat dissipation.

[0039] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An immersion liquid cooling level control structure based on overflow detection, comprising a liquid cooling tank (1) and a tank cover (3) fixedly connected to the top of the liquid cooling tank (1), characterized in that: A detection and control module (2), an alarm (6), and a liquid level control module (8) are fixedly connected to one side of the liquid cooling tank (1). The detection and control module (2) can detect the overflow state of the liquid cooling tank (1) and control the alarm (6) and the liquid level control module (8) to work according to the overflow state of the liquid cooling tank (1) through its internal switch (207). The detection control module (2) includes a vertical tube (201) and a horizontal tube (202) connected to the bottom of the vertical tube (201). The horizontal tube (202) is connected to the detection port on one side of the liquid cooling box (1). A float (205) is movably arranged on the inner side of the vertical tube (201), and a lever (206) is fixedly connected to the upper surface of the float (205). A mounting bracket (208) is fixedly connected to the outer wall of the vertical tube (201) by bolts. The mounting bracket (208) extends into the vertical tube (201) and a switch (207) is installed at the position corresponding to the lever (206). The liquid level control module (8) includes a pump (801) and a storage tank (802) fixedly connected to one side of the liquid cooling box (1). The inlet of the pump (801) is connected to the liquid cooling box (1) by a pumping pipe (805), and the outlet of the pump (801) is connected to the inlet of the storage tank (802) by a connecting pipe (804). The switch (207) is connected to the pump of the liquid level control module (8). (801) The alarm (6) is electrically connected; when the coolant overflows and the liquid level in the liquid-cooled tank (1) rises, the float (205) in the vertical pipe (201) moves up with the liquid level, causing the toggle block (206) to contact the switch (207), triggering the switch (207) and controlling the pump (801) to start to draw the excess coolant in the liquid-cooled tank (1) to the storage tank (802), and at the same time controlling the alarm (6) to start and issue an alarm signal.

2. The immersion liquid cooling level control structure based on overflow detection according to claim 1, characterized in that: The float (205) includes a lightweight aluminum layer (2051) and a foam filling layer (2052). The foam filling layer (2052) is wrapped inside the lightweight aluminum layer (2051), and the outer diameter of the float (205) is matched with the inner diameter of the vertical pipe (201) to ensure that the float (205) moves stably up and down along the inner wall of the vertical pipe (201).

3. The immersion liquid cooling level control structure based on overflow detection according to claim 1, characterized in that: The inner side of the vertical pipe (201) is symmetrically fixed with two stop plates (204). The two stop plates (204) are horizontal and spaced apart, located directly below the float (205). This not only limits the downward movement of the float (205) but also does not obstruct the coolant flow channel inside the vertical pipe (201).

4. The immersion liquid cooling level control structure based on overflow detection according to claim 1, characterized in that: The horizontal tube (202) has an integrally formed flange (203) on one side. The flange (203) is fixedly connected to the outer wall of the liquid cooling box (1) by bolts, and a sealing gasket is provided at the connection between the flange (203) and the liquid cooling box (1).

5. The immersion liquid cooling level control structure based on overflow detection according to claim 1, characterized in that: The bottom of the storage box (802) is connected to a drain pipe (803), and a valve is installed on the drain pipe (803).

6. The immersion liquid cooling level control structure based on overflow detection according to claim 1, characterized in that: The upper surface of the box cover (3) is fixedly connected with two symmetrically distributed handles (4), and the box cover (3) is connected to an inlet pipe (5), with a protective cap on the top of the inlet pipe (5).

7. The immersion liquid cooling level control structure based on overflow detection according to claim 1, characterized in that: The liquid-cooled box (1) is provided with heat dissipation fins (7) that are evenly distributed on both sides.