A multi-directional uniform temperature distribution mechanism for a liquid-cooled server cabinet

Abstract

The utility model relates to electronic equipment thermal management technical field, concretely relates to a kind of liquid cooling server cabinet multidirectional uniform temperature shunt mechanism. Its U-shaped pipe is set up in ascending section and descending section, ascending section is connected with first outlet end, descending section is connected with second inlet end, branch short pipe is set up in the vertex of U-shaped pipe, through the setting of ascending section and descending section of U-shaped pipe, again through the use of branch short pipe cooperation, cooling liquid can be based on gravity and fluid pressure multidirectional shunt, this design utilizes fluid natural flow characteristics, reduces the dependence on pump, simultaneously through the first outlet end of high heat flow cold plate and ascending section intercommunication, the second outlet end of low heat flow cold plate is connected with first inlet end by water pipe, and the water pipe between high heat flow cold plate and low heat flow cold plate forms dynamic circulation path, make the supply of local area flow sufficient, and then reduce the problem that mechanism temperature difference expands, to guarantee the normal use of server.

Description

Technical Field

[0001] This utility model relates to the field of thermal management technology for electronic devices, and more specifically, to a multi-directional temperature distribution mechanism for a liquid-cooled server rack. Background Technology

[0002] The multi-directional temperature distribution mechanism of liquid-cooled server racks is a core design that optimizes the flow path and distribution method of coolant to achieve uniform heat dissipation. It adopts a multi-branch flow channel layout and combines flow control technology to ensure that the coolant evenly covers the heat-generating components from different directions, thereby ensuring the stability of server operation and extending the life of hardware.

[0003] In high-density server racks, different servers have different loads, and static flow distribution is difficult to adapt dynamically. Although existing mechanisms maintain flow balance by increasing the pump pressure in the cold plate, the liquid cooling system maintains a high pump pressure for a long time. Continuous high pressure may accelerate the aging of seals or micro-leakage, reduce the effective flow in local areas, and thus cause insufficient coolant flow in local areas. This further leads to an increase in the temperature difference of the mechanism, thereby affecting the use of the server. Utility Model Content

[0004] This utility model provides a multi-directional temperature distribution mechanism for a liquid-cooled server rack. It utilizes a U-shaped tube and water pipes to gravity-driven coolant circulation within high-heat-flow and low-heat-flow cooling plates, thereby solving the problems mentioned in the background art.

[0005] Maintaining high pump pressure for extended periods in a liquid cooling system can accelerate seal aging or cause micro-leakage, reducing effective flow in localized areas and leading to insufficient coolant flow in those areas. This further exacerbates the temperature difference within the system, thus affecting server performance.

[0006] To achieve the above objectives, the liquid-cooled server rack multi-directional temperature distribution mechanism includes a liquid-cooled server rack body. A liquid storage tank is provided on the top of the liquid-cooled server rack body, and the liquid storage tank stores coolant. High-heat flow cooling plates and low-heat flow cooling plates are respectively installed on the electronic components inside the liquid-cooled server rack body. A first outlet end and a first inlet end are provided on one side of the high-heat flow cooling plate. A second outlet end and a second inlet end are provided on the top of the low-heat flow cooling plate. A U-shaped tube is provided directly above the liquid storage tank. The U-shaped tube is arranged with an ascending section and a descending section. The ascending section is connected to the first outlet end, and the descending section is connected to the second inlet end. A branch short pipe is provided near the apex of the U-shaped tube. The second outlet end and the first inlet end are connected by a water pipe.

[0007] In the above technical solution, a U-shaped tube is installed directly above the storage tank. The tube consists of a continuous rising section and a falling section. The rising section is connected to the first outlet end of the high-temperature flow cooling plate, and the falling section is connected to the second inlet end of the low-temperature flow cooling plate. A branch pipe is provided at the apex of the U-shaped tube to introduce the high-temperature coolant into the storage tank. The second outlet end of the low-temperature flow cooling plate is connected to the first inlet end of the high-temperature flow cooling plate through a water pipe. This arrangement can form a closed loop path based on temperature difference and gravity. After the high-temperature liquid is heated and rises, it flows back to the storage tank through the branch pipe. The low-temperature liquid is distributed to the high-temperature flow cooling plate and the low-temperature flow cooling plate along the falling section under the drive of gravity, ultimately achieving dynamic flow matching and reducing dependence on forced pump pressure.

[0008] Based on this, the apex of the U-shaped tube is higher than the liquid level of the coolant in the storage tank. The high-temperature coolant enters the rising section from the first outlet end of the high-heat flow cooling plate, expands due to heat, and rises along the U-shaped tube to the apex. Then, under the action of gravity, it flows along the descending section to the low-heat flow cooling plate. The liquid level gradient formed by the height difference at the apex ensures that the coolant can complete the circulation without relying on external pump pressure. At the same time, it adapts to the heat dissipation needs of different areas through natural convection, reducing flow imbalance and temperature difference accumulation caused by static distribution. A check valve is installed inside the descending section near the branch short pipe. The check valve is used to restrict the flow direction of the coolant and prevent the low-temperature liquid from flowing back into the storage tank from the low-heat flow cooling plate. This design avoids backflow interference with circulation stability caused by gravity or pressure fluctuations by forcing unidirectional flow.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] By using the rising and falling sections of the U-shaped tube and the combined use of branch short pipes, the coolant can achieve multi-directional flow based on gravity and fluid pressure. This design utilizes the natural flow characteristics of the fluid to reduce dependence on pumps. At the same time, the first outlet end of the high-heat flow cooling plate is connected to the rising section, the second outlet end of the low-heat flow cooling plate is connected to the first inlet end through a water pipe, and the water pipe between the high-heat flow cooling plate and the low-heat flow cooling plate forms a dynamic circulation path, ensuring sufficient flow supply in local areas, thereby reducing the problem of temperature difference expansion in the mechanism and ensuring the normal operation of the server. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a front view schematic diagram of the liquid-cooled server rack body of this utility model;

[0013] Figure 3 This is an exploded view of a partial structure of the present invention;

[0014] Figure 4This is an exploded view of the U-shaped tube of this utility model.

[0015] The meanings of the labels in the diagram are as follows:

[0016] 1. Liquid-cooled server cabinet body; 2. Liquid storage tank; 3. U-shaped tube; 31. Rising section; 32. Falling section; 33. Branch short pipe; 34. Water pipe; 4. High-heat flow cooling plate; 41. First outlet end; 42. First inlet end; 5. Low-heat flow cooling plate; 51. Second outlet end; 52. Second inlet end. Detailed Implementation

[0017] 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.

[0018] Currently, maintaining high pump pressure in liquid cooling systems for extended periods can accelerate seal aging or cause micro-leakage, reducing effective flow in localized areas and leading to insufficient coolant flow. This further exacerbates the temperature difference within the system, impacting server performance. This invention provides a multi-directional temperature distribution mechanism for liquid-cooled server racks. (See [link to relevant documentation]). Figure 1 and Figure 2 As shown, the system includes a liquid-cooled server rack body 1. A coolant reservoir 2 is located on the top of the rack body 1, containing coolant. High-heat cooling plates 4 and low-heat cooling plates 5 are mounted on the electronic components inside the rack body 1. The high-heat cooling plate 4 has a first outlet 41 and a first inlet 42 on one side, while the low-heat cooling plate 5 has a second outlet 51 and a second inlet 52 on its top. Specifically, the high-heat cooling plate 4 is installed at the bottom of the high-power electronic components, and the low-heat cooling plate 5 is installed at the bottom of the low-power electronic components. On the side of the component, the top of the liquid-cooled server rack body 1 is equipped with a liquid storage tank 2 for storing coolant; the high-power electronic components inside the liquid-cooled server rack body 1 are cooled by a high heat flow cooling plate 4, and the low-power electronic components are cooled by a low heat flow cooling plate 5. The high heat flow cooling plate 4 is installed at the bottom of the high-power electronic components, and the low heat flow cooling plate 5 is installed on the side of the low-power electronic components. This arrangement can form a positional height difference, and the coolant can form a closed loop between the high heat flow cooling plate 4 and the low heat flow cooling plate 5 based on gravity and natural convection, thereby achieving dynamic heat dissipation balance.

[0019] Further, see Figure 3As shown, a temperature sensor is installed on the low-heat flow cooling plate 5 to monitor its temperature. The purpose of adding a temperature sensor to the low-heat flow cooling plate 5 is to monitor the actual temperature data of low-power electronic components in real time, providing direct feedback for the dynamic control of coolant circulation. By accurately obtaining the heat dissipation status of the low-heat flow cooling plate 5, it is ensured that the coolant flowing out of the low-heat flow cooling plate 5 will not flow to the high-heat flow cooling plate 4 at an excessively high temperature, thereby improving the overall heat dissipation balance and avoiding server performance fluctuations or hardware damage caused by local temperature anomalies.

[0020] Furthermore, see Figure 3 As shown, the high heat flow cooling plate 4 is provided with multiple fins. The fins significantly increase the contact area between the high heat flow cooling plate 4 and the coolant, thereby improving the heat dissipation efficiency of high heat power electronic components. The fins can accelerate the conduction of heat from electronic components to the coolant, and at the same time promote the generation of turbulence effect when the coolant flows, thereby enhancing the heat exchange rate.

[0021] Working principle: When the server is running, the high-heat flow cooling plate 4 absorbs the heat generated by the high-power electronic components, causing the internal coolant temperature to rise. The high-temperature, low-density liquid expands under heat and, under natural convection, flows from the first outlet end 41 into the rising section 31 of the U-shaped tube 3. After flowing along the rising section 31 to the apex of the U-shaped tube 3, the high-temperature liquid enters the storage tank 2 through the branch short pipe 33. After mixing with the existing coolant in the storage tank 2, its temperature decreases, and the liquid level rises. Due to the increased liquid level in the storage tank 2, a water level difference is formed between the liquid and the coolant in the low-heat flow cooling plate 5. At this time, the branch short pipe 3 connects the storage tank 2 and the low-heat flow cooling plate 5 to the descending section 32. The low-temperature liquid in the higher-level storage tank 2 is drawn towards the lower-level low-heat flow cooling plate 5 by a siphon effect. The low-temperature liquid is introduced into 33, rises, and flows towards the descending section 32. The structure of section 32 is in a descending direction. Under the influence of gravity, the cryogenic liquid flows along the descending section 32 and enters the low-temperature flow cooling plate 5 through the second inlet end 52. As cryogenic liquid is continuously introduced into the low-temperature flow cooling plate 5, the excess cryogenic liquid is squeezed out from the second outlet end 51 and, under the influence of gravity, flows through the water pipe 34 and the first inlet end 42 into the high-temperature flow cooling plate 4, thereby dissipating heat from the high-temperature flow cooling plate 4. The cryogenic liquid inside the low-temperature flow cooling plate 5 absorbs the heat conducted by the low-power electronic components and flows out from the second outlet end 51. The hot coolant also flows from the water pipe 34 to the high-temperature flow cooling plate 4. At this time, the temperature of the hot coolant is relatively low and it continues to absorb heat in the high-temperature flow cooling plate 4. Then, the above process is repeated to form a closed-loop heat dissipation, thereby continuously providing sufficient coolant for the high-temperature flow cooling plate 4 and the low-temperature flow cooling plate 5.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-directional temperature distribution mechanism for a liquid-cooled server rack, comprising a liquid-cooled server rack body (1), wherein a liquid storage tank (2) is provided on the top of the liquid-cooled server rack body (1), the liquid storage tank (2) stores coolant, and a high-heat flow cooling plate (4) and a low-heat flow cooling plate (5) are respectively installed on the electronic components inside the liquid-cooled server rack body (1), wherein a first outlet end (41) and a first inlet end (42) are provided on one side of the high-heat flow cooling plate (4), and a second outlet end (51) and a second inlet end (52) are provided on the top of the low-heat flow cooling plate (5), characterized in that: A U-shaped tube (3) is provided directly above the liquid storage tank (2). The U-shaped tube (3) is provided with an ascending section (31) and a descending section (32). The ascending section (31) is connected to the first outlet end (41), and the descending section (32) is connected to the second inlet end (52). A branch short tube (33) is provided near the top of the U-shaped tube (3). The second outlet end (51) and the first inlet end (42) are connected by a water pipe (34).

2. The multi-directional temperature distribution mechanism for liquid-cooled server racks according to claim 1, characterized in that: The apex of the U-shaped tube (3) is higher than the liquid level of the coolant in the storage tank (2).

3. The multi-directional temperature distribution mechanism for liquid-cooled server racks according to claim 1, characterized in that: A check valve is installed inside the descending section (32) near the branch pipe (33).

4. The multi-directional temperature distribution mechanism for liquid-cooled server racks according to claim 1, characterized in that: The high-heat cooling plate (4) is provided with multiple fins.

5. The multi-directional temperature distribution mechanism for liquid-cooled server racks according to claim 1, characterized in that: The high-heat flow cooling plate (4) is installed at the bottom of the high-power electronic component, and the low-heat flow cooling plate (5) is installed on the side of the low-power electronic component.

6. The multi-directional temperature distribution mechanism for liquid-cooled server racks according to claim 1, characterized in that: A temperature sensor is provided on the low-heat flow cooling plate (5) to monitor the temperature of the low-heat flow cooling plate (5).

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