Exhaust device and server liquid cooling system

Abstract

The utility model provides an exhaust device and a server liquid cooling system, and relates to the technical field of liquid cooling heat dissipation. The exhaust device comprises a first connecting pipe used for being connected with a first exhaust connector of the liquid inlet water segregator; the second connecting pipe is used for being connected with a second exhaust connector of the liquid outlet water segregator; the liquid collecting cavity comprises a liquid inlet and an air outlet, the liquid inlet is communicated with the first connecting pipe and the second connecting pipe, the liquid collecting cavity is arranged above the first connecting pipe and the second connecting pipe, and the air outlet is located above the liquid inlet.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of liquid cooling heat dissipation, and in particular to an exhaust device and a server liquid cooling system. BACKGROUND

[0002] The liquid cooling system comprises an inlet liquid distributor and an outlet liquid distributor. The distributors play an important role in distributing water paths to each case and then achieving server heat dissipation. However, when the cooling medium flows through the distributors, air bubbles are easily generated, so a corresponding exhaust mechanism is needed to exhaust the air. CONTENT OF THE UTILITY MODEL

[0003] To solve the above technical problems, the embodiments of the present application provide the following technical solutions.

[0004] The first aspect of the present application provides an exhaust device, comprising: a first connecting pipe for connecting a first exhaust interface of an inlet liquid distributor; a second connecting pipe for connecting a second exhaust interface of an outlet liquid distributor; a liquid collecting cavity, the liquid collecting cavity comprising an inlet and an outlet, the inlet being in communication with the first connecting pipe and the second connecting pipe, the liquid collecting cavity being arranged above the first connecting pipe and the second connecting pipe, and the outlet being above the inlet.

[0005] In some embodiments of the present application, the exhaust device further comprises: a fluid control assembly arranged between the first connecting pipe, the second connecting pipe and the liquid collecting cavity, for controlling the on-off between the first connecting pipe, the second connecting pipe and the liquid collecting cavity.

[0006] In some embodiments of the present application, the exhaust device further comprises: a three-way pipe line, the three-way pipe line being in communication with the first connecting pipe, the second connecting pipe and the liquid collecting cavity respectively.

[0007] In some embodiments of the present application, the fluid control assembly comprises a first valve and a second valve, the first valve being arranged between the first connecting pipe and the three-way pipe line, and the second valve being arranged between the second connecting pipe and the three-way pipe line.

[0008] In some embodiments of the present application, observation parts are arranged on the first connecting pipe, the second connecting pipe and the liquid collecting cavity respectively, and the observation parts are used for observing the interiors of the first connecting pipe, the second connecting pipe and the liquid collecting cavity.

[0009] In some embodiments of the present application, the exhaust device further comprises: a liquid level alarm device connected to the liquid collecting cavity for detecting the liquid level height in the liquid collecting cavity and sending an alarm signal; a control device, the control device being in communication connection with the liquid level alarm device and the first valve and the second valve respectively, the control device controlling the opening and closing of the first valve and the second valve according to the alarm signal; wherein the first valve and the second valve are electric valves.

[0010] In some embodiments of the present application, the first connecting pipe and the second connecting pipe are flexible pipes; and the first connecting pipe and the second connecting pipe are arranged in an arc shape along the upwardly inclined direction.

[0011] In some embodiments of the present application, the exhaust device further comprises an exhaust pipeline, one end of the exhaust pipeline is in communication with the gas outlet, and the other end of the exhaust pipeline is provided with a pipe clamp for controlling the opening and closing of the exhaust pipeline.

[0012] In some embodiments of the present application, a liquid discharge pipeline and a third valve are further included; the liquid discharge pipeline is in communication with the liquid collecting chamber and the liquid inlet distributor; and / or, the liquid discharge pipeline is in communication with the liquid collecting chamber and the liquid outlet distributor; wherein the connection of the liquid discharge pipeline to the liquid collecting chamber is arranged close to the liquid inlet, and the third valve is arranged on the liquid discharge pipeline for controlling the opening and closing of the liquid discharge pipeline.

[0013] The second aspect of the present application provides a liquid cooling system for a server, comprising: a liquid inlet distributor comprising a first exhaust interface; a liquid outlet distributor comprising a second exhaust interface, the liquid inlet distributor being in communication with the liquid outlet distributor for transmitting a cooling medium; and an exhaust device comprising: a first connecting pipe connected to the first exhaust interface; a second connecting pipe connected to the second exhaust interface; a liquid collecting chamber comprising a liquid inlet and a gas outlet, the liquid inlet being in communication with the first connecting pipe and the second connecting pipe, the liquid collecting chamber being arranged above the first connecting pipe and the second connecting pipe, and the gas outlet being arranged above the liquid inlet. BRIEF DESCRIPTION OF DRAWINGS

[0014] The above and other objects, features and advantages of the example embodiments of the present application will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which several embodiments of the present application are shown by way of example, and wherein like or corresponding elements refer to like or corresponding parts throughout the several figures, in which:

[0015] Figure 1 A structural schematic diagram of an exhaust device of an embodiment of the present application is schematically shown;

[0016] Figure 2 A structural schematic diagram of another embodiment of an exhaust device of an embodiment of the present application is schematically shown;

[0017] Figure 3 A structural schematic diagram of an exhaust device of an embodiment of the present application is schematically shown;

[0018] Figure 4 A structural schematic diagram of a liquid cooling system of an embodiment of the present application is schematically shown;

[0019] Figure 5 A structural schematic diagram of a liquid cooling system of an embodiment of the present application applied to a server cabinet is schematically shown.

[0020] BRIEF DESCRIPTION OF DRAWINGS

[0021] 1, first connecting pipe; 2, second connecting pipe; 3, liquid collecting cavity; 4, fluid control assembly; 401, first valve; 402, second valve; 5, three-way pipe; 6, observation part; 7, exhaust pipe; 8, pipe clamp; 9, liquid discharge pipe; 10, third valve; 11, third connecting pipe;

[0022] 100, liquid inlet distributor; 101, first exhaust interface; 102, output interface; 103, liquid inlet interface; 200, liquid outlet distributor; 201, second exhaust interface; 202, input interface; 203, liquid outlet interface; 300, server cabinet. DETAILED DESCRIPTION

[0023] The exemplary embodiments of the present application will be described herein below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the drawings, it is understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this application will be thoroughly and completely understood, and the scope of the present application will be adequately conveyed to those skilled in the art.

[0024] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be understood as the common meanings understood by those skilled in the art to which the present application belongs.

[0025] In a liquid cooling system, a pair of distributors are usually provided. One of the distributors is responsible for distributing cooling medium to each server, which is the liquid inlet distributor. The liquid inlet interface of the liquid inlet distributor is usually connected to the cooling medium supply source of the entire liquid cooling system, and the liquid inlet interface for achieving the heat dissipation function of the server is generally located on one side of the distributor, which can be the side or the bottom. The other distributor is connected to a plurality of servers and is responsible for collecting the cooling medium that absorbs the heat of each server, which is the liquid outlet distributor. The liquid outlet interface of the liquid outlet distributor is generally connected to the cooling liquid recovery device or circulating device of the entire liquid cooling system, and the liquid outlet interface is generally located on the bottom or side of the distributor. Then, the liquid outlet distributor will deliver the cooling medium that absorbs heat to the cooling device, and the cooling device will deliver the cooling medium back to each server through the distributor, achieving a server cooling cycle. However, bubbles may be generated when the cooling medium flows through the distributor, so a special exhaust mechanism is needed to exhaust the gas. The existing exhaust method is to use a transparent hose, insert the quick connector of the transparent hose into the quick connector part of the distributor, and then observe whether a large amount of liquid flows out of the transparent hose to determine the exhaust condition. After confirming that the gas has been exhausted, the screw is tightened to complete the entire exhaust operation process. However, this exhaust method not only has low exhaust efficiency, but also is complicated to operate.

[0026] Therefore, the exhaust device provided by the embodiment of the present application can simultaneously exhaust two water separators, and does not need to observe the exhaust condition at all times, thereby liberating hands and enabling personnel to simultaneously operate other equipment, and improving the exhaust efficiency.

[0027] Embodiment 1

[0028] The embodiment of the present application provides an exhaust device, as shown in the drawings, comprising: a first connecting pipe 1 used for connecting a first exhaust interface 101 of a liquid inlet water separator 100; a second connecting pipe 2 used for connecting a second exhaust interface 201 of a liquid outlet water separator 200; and a liquid collecting cavity 3, the liquid collecting cavity 3 comprising a liquid inlet and an exhaust outlet, the liquid inlet being in communication with the first connecting pipe 1 and the second connecting pipe 2, the liquid collecting cavity 3 being arranged above the first connecting pipe 1 and the second connecting pipe 2, and the exhaust outlet being located above the liquid inlet. Figure 1 One end of the first connecting pipe 1 is connected to the first exhaust interface 101 of the liquid inlet water separator 100, and the second connecting pipe 2 is also correspondingly connected to the second exhaust interface 201 of the liquid outlet water separator 200. In terms of the connecting means, a quick connector, a pipe clamp lock or a threaded connection or the like can be selected to ensure the stability and sealing of the connection. The liquid collecting cavity 3 is arranged at a position higher than the first connecting pipe 1 and the second connecting pipe 2, and can be fixed above the first connecting pipe 1 and the second connecting pipe 2 by means of a support, which can be an existing server cabinet 300 structure. The liquid collecting cavity 3 can be a cuboid or a column structure, and the liquid inlet of the liquid collecting cavity 3 can be located at the bottom of the liquid collecting cavity 3, and is in communication with the first connecting pipe 1 and the second connecting pipe 2 through a quick connector, a pipe clamp or the like, so as to ensure that the cooling medium possibly wrapped with bubbles discharged from the liquid inlet water separator 100 and the liquid outlet water separator 200 can smoothly flow into the liquid collecting cavity 3. Since the exhaust outlet of the liquid collecting cavity 3 is located above the liquid inlet, when the cooling medium flows into the liquid collecting cavity 3, the cooling medium will gradually gather at the bottom of the liquid collecting cavity 3 under the action of gravity, and the bubbles will slowly rise to the position of the exhaust outlet.

[0029] Compared with the traditional mode of manually observing the exhaust of a transparent hose, the exhaust device provided by the embodiment of the present application can simultaneously exhaust two water separators through the first connecting pipe 1 and the second connecting pipe 2, and can automatically separate the cooling medium from the gas by arranging the liquid collecting cavity 3 above the first connecting pipe 1 and the second connecting pipe 2, so that the gas naturally rises and gathers at the exhaust outlet to be discharged, without the need for manual continuous observation and complex operation, thereby greatly shortening the time required for exhaust and significantly improving the exhaust efficiency of the entire liquid cooling system.

[0030] In some embodiments, the exhaust device further comprises: a fluid control assembly 4 arranged between the first connecting pipe 1, the second connecting pipe 2 and the liquid collecting cavity 3, and used for controlling the on-off of the first connecting pipe 1, the second connecting pipe 2 and the liquid collecting cavity 3.

[0031] ​

[0032] The fluid control component 4 is positioned on the critical path connecting the first connecting pipe 1, the second connecting pipe 2, and the liquid collecting chamber 3. For example, the fluid control component 4 can be a solenoid valve, which is precisely matched to the system's operating state through circuit control. When a full venting operation is required, the control system sends an opening signal to the solenoid valve, at which point the solenoid valve opens the channel, allowing the passage between the first connecting pipe 1, the second connecting pipe 2, and the liquid collecting chamber 3 to be unobstructed.

[0033] Alternatively, a shut-off valve with manual control function can be used as the fluid control component 4. When venting is required, the operator can manually operate the shut-off valve to adjust it to a suitable opening degree to control the flow rate and speed of the cooling medium flowing into the liquid collection chamber 3.

[0034] The fluid control component 4 enables the exhaust device to precisely control the on / off state between the first connecting pipe 1, the second connecting pipe 2, and the liquid collection chamber 3 according to different operating stages and actual needs of the liquid cooling system. During the exhaust phase, the passage is opened to ensure that air bubbles can be smoothly discharged; after the exhaust operation is completed, the passage is immediately closed to prevent continuous discharge of cooling liquid and waste of resources. During normal system operation, the passage is also kept closed, thus effectively avoiding unnecessary media flow and potential risks. In this way, unnecessary media flow and potential risks are avoided, thereby optimizing the timing and efficiency of the entire exhaust process and improving the intelligence level of system operation.

[0035] In some embodiments, such as Figure 2 As shown, the bottom of the liquid collecting chamber 3 has two spaced-apart liquid inlets, and the first connecting pipe 1 and the second connecting pipe 2 are respectively connected to the two liquid inlets of the liquid collecting chamber 3. This separate connection method facilitates system maintenance and troubleshooting. If the first connecting pipe 1 or its connected inlet distributor 100 has a problem, such as blockage or leakage, it will not directly affect the normal operation of the second connecting pipe 2 and the outlet distributor 200, and vice versa. Moreover, when repairing or replacing a particular connecting pipe or distributor, only the corresponding passage needs to be closed, without stopping the operation of the entire liquid cooling system, thus improving system availability.

[0036] In some embodiments, such as Figure 1 As shown, the exhaust device also includes a three-way pipe 5, which is connected to the first connecting pipe 1, the second connecting pipe 2 and the liquid collection chamber 3 respectively.

[0037] The three ports of the tee pipe 5 are connected to the first connecting pipe 1, the second connecting pipe 2 and the liquid collecting cavity 3 respectively. For example, the tee pipe 5 can be made of high-quality corrosion-resistant and high-pressure metal or engineering plastic material, and the caliber of the tee pipe 5 is adapted to the interfaces of the first connecting pipe 1, the second connecting pipe 2 and the liquid collecting cavity 3. The tee pipe 5 is connected to the first connecting pipe 1, the second connecting pipe 2 and the liquid collecting cavity 3 by reliable connection methods such as welding, threaded connection or sealing glue connection to ensure the firmness and sealing of the connection. The liquid collecting cavity 3 can also be connected to the tee pipe 5 through the third connecting pipe 11, and the third connecting pipe 11 has the same structure as the first connecting pipe 1 or the second connecting pipe 2. During the exhaust process, the cooling medium containing bubbles discharged from the liquid inlet separator 100 flows into the tee pipe 5 through the first connecting pipe 1, and at the same time, similar cooling medium discharged from the liquid outlet separator 200 also converges into the tee pipe 5 through the second connecting pipe 2. Then, under the guidance of the tee pipe 5, the mixed cooling medium and bubbles flow smoothly into the liquid collecting cavity 3.

[0038] The tee pipe 5 provides a simple and efficient connection method, which integrates the first connecting pipe 1 and the second connecting pipe 2 with the liquid collecting cavity 3, avoids complex multi-connection layout, reduces the occupied space, and also reduces the connection nodes and potential leakage risk points, so that the transmission path of the cooling medium and bubbles is more direct and smooth, the fluid resistance is reduced, and the exhaust speed and the operation efficiency of the entire liquid cooling system are improved.

[0039] In some embodiments, the fluid control assembly 4 includes a first valve 401 and a second valve 402. The first valve 401 is arranged between the first connecting pipe 1 and the tee pipe 5, and the second valve 402 is arranged between the second connecting pipe 2 and the tee pipe 5.

[0040] The first valve 401 is installed between the first connecting pipe 1 and the tee pipe 5, and the second valve 402 is installed between the second connecting pipe 2 and the tee pipe 5. The first valve 401 and the second valve 402 can be electromagnetic valves or manual stop valves. The arrangement of the first valve 401 and the second valve 402 enables independent and precise control of the cooling medium flowing from the liquid inlet separator 100 and the liquid outlet separator 200 to the liquid collecting cavity 3. According to different operating stages and needs of the system, the opening degree of each valve can be flexibly adjusted to control the flow size and flow direction of the cooling medium, thereby optimizing the exhaust process, ensuring that the bubbles can be efficiently exhausted, and avoiding unnecessary waste or abnormal flow of the cooling medium. A valve can also be closed separately to isolate the corresponding separator and the exhaust device, which is convenient for targeted inspection and maintenance work.

[0041] In some embodiments, the first valve 401 and the second valve 402 can be one-way valves, which can ensure that the liquid and gas flow in a predetermined direction, for example, the liquid in the first connecting pipe 1 can flow to the liquid collection chamber 3, but cannot flow back into the first connecting pipe 1 or the second connecting pipe 2. Thus, the liquid or gas in the liquid collection chamber 3 cannot flow back into the first connecting pipe 1 or the second connecting pipe 2, and the cooling medium in the first connecting pipe 1 and the second connecting pipe 2 cannot mix with each other, which can disturb the preset cooling medium distribution and circulation path of the system.

[0042] In some embodiments, as shown in FIG. 6, the first connecting pipe 1, the second connecting pipe 2, and the liquid collection chamber 3 are respectively provided with observation parts 6 for observing the inside of the first connecting pipe 1, the second connecting pipe 2, and the liquid collection chamber 3. Figure 3

[0043] The observation part 6 of the first connecting pipe 1 and the second connecting pipe 2 can be a section of transparent hard plastic or glass pipe, which can be connected to the main body of the connecting pipe by, for example, threaded connection and sealing glue to ensure sealing. The length and diameter of the observation part 6 are adapted to the connecting pipe, and the installation position can be selected at a conspicuous position close to the water distributor or the tee pipe 5 for easy viewing by the operator. The observation part 6 of the liquid collection chamber 3 can be a transparent organic glass or tempered glass window embedded in the wall of the liquid collection chamber 3. The shape and size of the window are designed according to the structure of the liquid collection chamber 3, which can ensure a good observation field of view without affecting the overall strength and sealing of the liquid collection chamber 3.

[0044] The observation part 6 enables the operator to directly observe the inside of the first connecting pipe 1, the second connecting pipe 2, and the liquid collection chamber 3, and to master the information such as the content, size, and flow speed of the gas bubbles in the cooling medium in real time, so as to accurately judge the degassing process. For example, in the initial stage of degassing, if the gas bubbles in the connecting pipe are observed to be dense and flow rapidly, it indicates that the degassing is being carried out in large quantities. With the passage of time, the gas bubbles gradually decrease, become smaller, and flow slower, which can be inferred that the degassing is approaching the end, thereby helping to accurately determine the time node of opening and closing of the valves and improving the degassing efficiency and quality.

[0045] In some embodiments, the degassing device further comprises a liquid level alarm device connected to the liquid collection chamber 3 for detecting the liquid level in the liquid collection chamber 3 and sending an alarm signal; a control device in communication with the liquid level alarm device and the first valve 401 and the second valve 402, respectively, and controlling the opening and closing of the first valve 401 and the second valve 402 according to the alarm signal; wherein the first valve 401 and the second valve 402 are electric valves.

[0046] ​The liquid level alarm device is installed at a suitable position of the liquid collecting cavity 3, for example, a capacitive liquid level alarm is used, and a sensor probe part is installed in the liquid collecting cavity 3 based on the capacitive principle. When the liquid level changes, the capacitance value formed between the probe and the liquid will change. Because the dielectric constants of the liquid and the air are different, the height of the liquid level will cause the electric field distribution between the two poles of the capacitive sensor to change. By detecting the change of the capacitance value and comparing it with the preset capacitance threshold value, when the liquid level reaches the alarm value, an alarm signal will be triggered. Or a float ball liquid level alarm is used, and the float ball floats up and down with the rise and fall of the liquid level in the liquid collecting cavity 3, and when the liquid level reaches the set high or low position, the float ball triggers a micro switch through a connecting rod. For example, when the liquid level rises to the high position, the float ball floats up, the connecting rod drives the micro switch to act, and the alarm circuit is closed; when the liquid level falls to the low position, the float ball sinks, and the micro switch is also actuated, and different alarm signals are sent out.

[0047] The control device can be a programmable logic controller (PLC), a microcontroller (MCU), an industrial personal computer (IPC), or a CDU (Cooling Distribution Unit) in the liquid cooling system.

[0048] The liquid level alarm device and the control device are connected through wired or wireless communication, and the detected liquid level information is transmitted to the control device in real time. The electric first valve 401 and the second valve 402 are also connected with the control device to receive the instructions of the control device to realize the opening and closing. During the operation of the liquid cooling system, when the liquid level in the liquid collecting cavity 3 gradually rises due to the inflow of the cooling medium, once the liquid level reaches the upper limit height value preset by the liquid level alarm device, the liquid level sensor immediately sends an alarm signal to the control device. After receiving the signal, the control device quickly sends a closing instruction to the first valve 401 and the second valve 402 to prevent the cooling medium of the liquid inlet distributor 100 and the liquid outlet distributor 200 from continuing to flow into the liquid collecting cavity 3, and to prevent the liquid from overflowing.

[0049] Through the cooperation of the liquid level alarm device and the control device, automatic and accurate monitoring and control of the liquid level in the liquid collecting cavity 3 are realized. By responding to the change of the liquid level in time and controlling the opening and closing of the valve, the overflow of the cooling medium due to the high liquid level in the liquid collecting cavity 3 is effectively prevented, and the safety hazards such as equipment short circuit and corrosion caused by liquid leakage due to human operation errors or untimely operation are avoided. This not only improves the intelligent degree and self-adaptive ability of the exhaust device, but also optimizes the exhaust process and the operation efficiency of the whole liquid cooling system.

[0050] In some embodiments, the first connecting pipe 1 and the second connecting pipe 2 are flexible pipes; the first connecting pipe 1 and the second connecting pipe 2 are arranged in an arc shape along the direction of upward inclination.

[0051] The first connecting pipe 1 and the second connecting pipe 2 are made of soft pipe material, such as rubber hose or silica gel hose, which has corrosion resistance to cooling liquid and has certain flexibility and strength. The soft pipe material gives the first connecting pipe 1 and the second connecting pipe 2 great flexibility, which can be easily bent or folded, and can smoothly bypass various obstacles such as server cabinets and cable bridges, thereby effectively adapting to complex and variable space environments and significantly reducing the complexity of installation.

[0052] The upwardly inclined arc-shaped structure not only provides buffering for the liquid, but also facilitates the natural upward movement and smooth flow of the gas bubbles in the cooling medium to the liquid collecting cavity 3. Since the gas bubbles have a tendency to move upward in the liquid, this pipe layout provides a continuous upward channel for the gas bubbles, reducing the retention and accumulation of the gas bubbles in the pipe and accelerating the exhaust process. Moreover, the arc-shaped design is also conducive to the natural backflow of the residual cooling medium in the pipe to the water distributor or the liquid collecting cavity 3 under the action of gravity after the exhaust is completed, reducing the residual amount of the cooling medium in the pipe.

[0053] In some embodiments, the two ends of the first connecting pipe 1 and the second connecting pipe 2 can be connected to quick connectors respectively. During installation, one end of the first connecting pipe 1 is connected to the first exhaust interface 101 of the liquid inlet water distributor 100 through a quick connector, the other end extends in an upwardly inclined arc shape, and is connected to the three-way pipe 5 through a quick connector; the second connecting pipe 2 is also connected in the same way, one end of which is connected to the second exhaust interface 201 of the liquid outlet water distributor 200 through a quick connector, the other end extends in an upwardly inclined arc shape, and is connected to the three-way pipe 5 through a quick connector. Due to the provision of the quick connectors, the first connecting pipe 1 and the second connecting pipe 2 can be easily plugged in and out during installation, disassembly and maintenance, greatly improving the working efficiency of the exhaust device in assembly, repair and other aspects, and enhancing the maintainability and flexibility of the entire liquid cooling system.

[0054] In some embodiments, the exhaust device further comprises an exhaust pipe 7, one end of which is in communication with the gas outlet, and the other end of the exhaust pipe 7 is provided with a pipe clamp 8 for controlling the opening and closing of the exhaust pipe 7.

[0055] The exhaust pipe 7 can be made of rubber hose, silica gel hose, stainless steel pipe or special engineering plastic pipe with certain strength. One end of the exhaust pipe 7 is connected to the gas outlet of the liquid collecting cavity 3 in a sealed manner to ensure that the gas does not leak. At the other end of the exhaust pipe 7, a pipe clamp 8 is installed. The pipe clamp 8 can be a spiral pipe clamp 8, which can adjust the clamping degree of the clamp on the exhaust pipe 7 by rotating the adjusting nut, thereby controlling the opening and closing of the exhaust pipe 7.

[0056] When the liquid cooling system is in the initial exhaust stage, the pipe clamp 8 is opened, so that the gas gathered in the liquid collection chamber 3 around the gas outlet can be smoothly discharged. As the exhaust process continues, once it is observed that there are almost no bubbles in the exhaust pipeline 7, the pipe clamp 8 can be gradually tightened, gradually reducing the ventilation of the exhaust pipeline 7, until the pipe clamp 8 is finally completely closed, thereby preventing external air from flowing into the exhaust device and the liquid cooling system.

[0057] In addition, the exhaust pipeline 7 can be made of transparent material, so that if the cooling medium overflows from the liquid collection chamber 3, the exhaust pipeline 7 can provide a path for the liquid to flow out. When the operator detects liquid in the exhaust pipeline 7, the pipe clamp 8 can be locked in time, thereby effectively preventing further overflow of the cooling medium.

[0058] By providing the exhaust pipeline 7, when the exhaust device stops exhausting, the pipe clamp 8 closes the exhaust pipeline 7, which can effectively prevent external air from entering the liquid cooling system. External air may carry dust, moisture or other impurities, which may contaminate the cooling medium and affect its heat dissipation performance once it enters the system.

[0059] In some embodiments, the fluid control assembly 4 can use a waterproof and breathable membrane, which is arranged in the middle of the exhaust pipeline 7 or at the pipe clamp 8. For example, a high-molecular waterproof and breathable membrane with specific pore size and material properties is selected, which can allow gas molecules to pass freely, but can effectively block liquid water and small particles in the cooling liquid. When installed, if located in the middle of the exhaust pipeline 7, the waterproof and breathable membrane can be fixed in a specially designed membrane support, and then the support is connected to the exhaust pipeline 7 to ensure that the membrane is tightly attached to the inner wall of the exhaust pipeline 7, forming a good seal. When located at the pipe clamp 8, the waterproof and breathable membrane can be integrated into the structure of the pipe clamp 8, such as arranging a layer of waterproof and breathable membrane at the clamping part of the pipe clamp 8, so that gas can still pass through the membrane during the opening and closing adjustment process of the pipe clamp 8. During the operation of the liquid cooling system, when the gas in the liquid collection chamber 3 is discharged through the exhaust pipeline 7, the waterproof and breathable membrane allows the gas to escape smoothly, and once there is a tendency for the cooling liquid to overflow into the exhaust pipeline 7 due to abnormal conditions (such as exhaust device failure, excessive system pressure fluctuations, etc.), the waterproof and breathable membrane will prevent the cooling liquid from passing through, preventing it from leaking into the external environment.

[0060] In some embodiments, a liquid discharge pipeline 9 and a third valve 10 are further included; the liquid discharge pipeline 9 communicates the liquid collection chamber 3 and the liquid inlet distributor 100; and / or, the liquid discharge pipeline 9 communicates the liquid collection chamber 3 and the liquid outlet distributor 200; wherein the connection between the liquid discharge pipeline 9 and the liquid collection chamber 3 is arranged close to the liquid inlet, and the third valve 10 is arranged on the liquid discharge pipeline 9 to control the opening and closing of the liquid discharge pipeline 9.

[0061] The drain pipeline 9 can adopt a pipe material with good corrosion resistance and sealing performance, such as a PTFE pipe or a stainless steel pipe, etc. One end of the drain pipeline 9 is connected to a position close to the liquid inlet of the liquid collecting cavity 3, and the other end is connected to the liquid inlet distributor 100 or the liquid outlet distributor 200. The drain pipeline 9 can be connected to the liquid inlet interface 103 of the liquid inlet distributor 100 on one side, and / or connected to the liquid outlet interface 203 of the liquid outlet distributor 200 on the other side. The liquid inlet interface 103 and the liquid outlet interface 203 are respectively located at the bottom end of the liquid inlet distributor 100 and the liquid outlet distributor 200.

[0062] The liquid inlet interface 103 of the liquid inlet distributor 100 is the inlet of the cooling medium into the distributor, which is connected to the cooling liquid supply source (such as a cooling liquid storage tank, etc.) of the entire liquid cooling system. The liquid outlet interface 203 of the liquid outlet distributor 200 is generally connected to the cooling liquid recovery device or circulating device of the entire liquid cooling system, which can recover the cooling medium discharged from the server after absorbing heat.

[0063] When the liquid cooling system is not in operation, the other end of the drain pipeline 9 can be connected to the liquid inlet interface 103 and / or the liquid outlet interface 203 through a quick connector. The quick connector can realize quick connection and disconnection of the pipeline, and has good sealing performance, which can effectively prevent medium leakage.

[0064] Since the liquid collecting cavity 3 and the liquid inlet interface 103 and the liquid outlet interface 203 of the liquid inlet distributor 100 and the liquid outlet distributor 200 have a height difference, the liquid in the liquid collecting cavity 3 can enter the bottom of the liquid inlet distributor 100 and the liquid outlet distributor 200 through the liquid inlet interface 103 and / or the liquid outlet interface 203 under the action of gravity. Thus, the liquid in the liquid collecting cavity 3 can be recovered. The third valve 10 is installed on the drain pipeline 9, which can be an electromagnetic valve or a manual stop valve, etc.

[0065] Specifically, the drain pipeline 9 can simultaneously connect the liquid collecting cavity 3 and the liquid inlet distributor 100 and the liquid outlet distributor 200. At this time, the drain pipeline 9 will have branches, one branch is connected to the liquid inlet distributor 100, and the other branch is connected to the liquid outlet distributor 200, and an independent third valve 10 can be provided on each branch. In this way, the residual cooling medium in the liquid collecting cavity 3 can be recovered into the liquid inlet and liquid outlet distributors 200 respectively, so that the distribution of the cooling medium in the entire system is more uniform, which is convenient for subsequent recycling.

[0066] Alternatively, the drain pipeline 9 connects the liquid collecting cavity 3 and the liquid inlet distributor 100. When the liquid cooling system is working, the drain pipeline 9 is disconnected from the liquid inlet distributor 100, and then the cooling liquid supply source is connected to the liquid inlet interface 103. Under the action of the existing driving pump in the liquid cooling system, the recovered liquid in the liquid inlet distributor 100 and the liquid in the cooling liquid supply source can be distributed to each server.

[0067] Alternatively, the liquid discharge pipeline 9 is connected to the liquid collection chamber 3 and the liquid outlet distributor 200. When the liquid cooling system is working, the liquid discharge pipeline 9 is disconnected from the liquid outlet distributor 200, and then the cooling liquid supply source is connected to the liquid outlet interface 203. When the liquid cooling system is working, the recovered liquid in the liquid outlet distributor 200 is recovered to the cooling liquid recovery device together with the cooling medium in the server that absorbs heat. The recovered cooling medium is cooled or purified.

[0068] Alternatively, the liquid in the liquid collection chamber 3 can be recovered alone. The other end of the liquid discharge pipeline 9 is guided into a recovery bucket. The third valve 10 is opened, and the liquid in the liquid collection chamber 3 flows into the recovery bucket. Then, the liquid in the recovery bucket is selectively recovered to the cooling liquid supply source or the cooling liquid recovery device.

[0069] When the exhaust device completes the exhaust, a certain amount of cooling medium may remain in the liquid collection chamber 3. At this time, if it is necessary to recover the cooling medium or re-introduce it into the liquid cooling circulation system, the third valve 10 can be opened according to the control device or manual operation. The cooling medium in the liquid collection chamber 3 flows back to the liquid inlet distributor 100 or the liquid outlet distributor 200 under the action of gravity or system pressure difference through the liquid discharge pipeline 9. If the third valve 10 is an electromagnetic valve, it can be connected to the control device and automatically controlled according to the preset time, liquid level, and other conditions. If it is a manual stop valve, an operator can operate it on site according to the actual situation.

[0070] Through the liquid discharge pipeline 9 and the third valve 10, the remaining cooling medium in the liquid collection chamber 3 can be effectively recovered to the liquid distributor of the liquid cooling system, the cooling medium can be recycled, the waste of the cooling medium is reduced, and the operating cost of the liquid cooling system is reduced.

[0071] In some embodiments, the interface height at which the liquid collection chamber 3 is connected to the liquid discharge pipeline 9 is higher than the liquid inlet distributor 100 and the liquid outlet distributor 200. Because the interface height of the liquid collection chamber 3 is higher than the liquid distributors, the remaining cooling medium flows back to the liquid inlet distributor 100 or the liquid outlet distributor 200 under the action of gravity along the liquid discharge pipeline 9. The height difference of the interface at which the liquid collection chamber 3 is connected to the liquid discharge pipeline 9 utilizes the gravitational potential energy to provide a natural power for the backflow of the cooling medium, without the need for an additional power device (such as a pump) to drive, thereby reducing the energy consumption and equipment complexity of the system. Alternatively, the third valve 10 can be a one-way valve, so that the fluid in the liquid collection chamber 3 can flow to the liquid inlet distributor 100 or the liquid outlet distributor 200, but cannot flow back to the liquid collection chamber 3 in the opposite direction. Thus, the liquid in the liquid inlet distributor 100 or the liquid outlet distributor 200 cannot flow back to the liquid collection chamber 3.

[0072] Embodiment 2

[0073] The embodiment of the present application provides a server liquid cooling system, as shown inFigure 4 As shown, the system comprises: an inlet distributor 100, the inlet distributor 100 comprising a first exhaust interface 101; an outlet distributor 200, the outlet distributor 200 comprising a second exhaust interface 201, the inlet distributor 100 and the outlet distributor 200 being in communication for transmitting cooling medium; and an exhaust device, the exhaust device comprising: a first connecting pipe 1 connected to the first exhaust interface 101; a second connecting pipe 2 connected to the second exhaust interface 201; and a liquid collecting cavity 3, the liquid collecting cavity 3 comprising an inlet and an outlet, the inlet being in communication with the first connecting pipe 1 and the second connecting pipe 2, the liquid collecting cavity 3 being arranged above the first connecting pipe 1 and the second connecting pipe 2, and the outlet being above the inlet.

[0074] As shown, a plurality of servers are usually placed in a server cabinet 300, the server cabinet 300 can be a box type frame structure, the inlet distributor 100 and the outlet distributor 200 are respectively arranged on two side walls in the server cabinet 300, and the inlet distributor 100 and the outlet distributor 200 are fixedly connected to the server cabinet 300 in the vertical direction. Figure 5

[0075] The plurality of cooling medium output interfaces 102 of the inlet distributor 100 are arranged towards the inside of the server cabinet 300, and can be connected to the cooling liquid inlets of the servers through flexible pipes resistant to corrosion of the cooling liquid, such as silica gel hoses or polytetrafluoroethylene pipes. The inlet distributor 100 can accurately deliver the cooling medium into the heat dissipation channels of the plurality of servers, thereby achieving heat dissipation support for the servers.

[0076] The plurality of input interfaces 202 of the outlet distributor 200 are also arranged towards the inside of the server cabinet 300, and are connected to the cooling liquid outlets of the servers through similar flexible pipes resistant to corrosion of the cooling liquid. Quick connectors, threaded connections and sealing washers can be used to ensure the sealing of the connections, so that the cooling medium that has absorbed heat from the servers and flows out of the heat dissipation channels of the servers can smoothly return to the outlet distributor 200, thereby completing the medium return process in a heat dissipation cycle.

[0077] The output interfaces 102 of the inlet distributor 100 are used to distribute and deliver the cooling medium to the servers, thereby ensuring the supply of cooling liquid required for heat dissipation of the servers. The first exhaust interface 101 is used to exhaust air bubbles that may be mixed into the cooling medium before the cooling medium enters the servers. The output interfaces 102 are distributed on the side of the distributor, which is convenient for connecting to external pipes and can distribute the flow direction of the cooling liquid to each server. The first exhaust interface 101 is arranged on the top of the distributor, which is conducive to the natural aggregation of air bubbles around it, facilitates exhaust, and avoids air bubbles entering the servers together with the cooling medium, thereby affecting the heat dissipation effect.

[0078] ​The liquid inlet 103 of the liquid inlet distributor 100 is the entrance of the cooling medium into the distributor, and is connected to the cooling liquid supply source (such as a cooling liquid storage tank, etc.) of the whole liquid cooling system. The liquid inlet 103 is arranged at the bottom end of the distributor, so that the cooling liquid can flow in under the pressure of the pump. The first gas outlet 101 is arranged higher than the liquid inlet 103 and the liquid outlet 102, so that when the cooling liquid flows from the liquid inlet 103, the gas bubbles generated during the process of flowing in the distributor and being ready to be distributed from the liquid outlet 102 can float to the high position of the first gas outlet 101, and are easily discharged, so as to ensure that the cooling liquid output to the server contains as few gas bubbles as possible.

[0079] Similarly, the layout of the liquid outlet distributor 200 can refer to the structural layout of the liquid inlet distributor 100.

[0080] The first gas outlet 101 of the liquid inlet distributor 100 is connected to the gas discharge device through the first connecting pipe 1. The second gas outlet 201 of the liquid outlet distributor 200 is connected to the gas discharge device through the second connecting pipe 2. The liquid collecting cavity 3 of the gas discharge device is fixedly arranged above the server cabinet 300, and an opening is arranged on the top plate of the server cabinet 300. The first connecting pipe 1 and the second connecting pipe 2 are arranged in the server cabinet 300, and are connected to the first gas outlet 101 and the second gas outlet 201 respectively and pass through the opening to be connected to the liquid inlet of the liquid collecting cavity 3.

[0081] When the server liquid cooling system starts to operate, the cooling medium enters the heat dissipation circuit of the server under the distribution of the liquid inlet distributor 100, and in this process, air may be mixed to form gas bubbles. After the cooling medium containing the gas bubbles flows out of the server, it passes through the liquid outlet distributor 200 and then enters the liquid collecting cavity 3 through the second connecting pipe 2. At the same time, the gas bubbles in the liquid inlet distributor 100 also enter the liquid collecting cavity 3 through the first connecting pipe 1. In the liquid collecting cavity 3, the cooling medium sinks to the bottom under the action of gravity, and the gas bubbles rise and gather near the gas outlet and are discharged.

[0082] By arranging the gas discharge device, the two distributors can be discharged at the same time, and the cooling medium and the gas can be automatically separated in the liquid collecting cavity 3. The gas naturally rises and gathers at the gas outlet to be discharged, without the need for continuous manual observation and complex operation, which greatly shortens the time required for gas discharge and significantly improves the gas discharge efficiency of the whole liquid cooling system.

[0083] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which shall be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An exhaust device characterized by, The exhaust device comprises: a first connecting pipe for connecting a first exhaust interface of a liquid inlet distributor; a second connecting pipe for connecting a second exhaust interface of a liquid outlet distributor; a liquid collecting cavity, the liquid collecting cavity comprising a liquid inlet and an exhaust outlet, the liquid inlet being in communication with the first connecting pipe and the second connecting pipe, the liquid collecting cavity being arranged above the first connecting pipe and the second connecting pipe, and the exhaust outlet being located above the liquid inlet.

2. The exhaust apparatus according to claim 1, characterized by Further comprising: a fluid control assembly arranged between the first connecting pipe, the second connecting pipe and the liquid collecting cavity for controlling the on-off of the first connecting pipe, the second connecting pipe and the liquid collecting cavity.

3. The exhaust apparatus according to claim 2, characterized by Further comprising: a three-way pipe in communication with the first connecting pipe, the second connecting pipe and the liquid collecting cavity respectively.

4. The exhaust device according to claim 3, wherein: the fluid control assembly comprises a first valve and a second valve, the first valve being arranged between the first connecting pipe and the three-way pipe, and the second valve being arranged between the second connecting pipe and the three-way pipe.

5. The exhaust device according to claim 4, wherein: observation parts are arranged on the first connecting pipe, the second connecting pipe and the liquid collecting cavity respectively for observing the interiors of the first connecting pipe, the second connecting pipe and the liquid collecting cavity.

6. The exhaust apparatus according to claim 4, characterized by Further comprising: a liquid level alarm device connected to the liquid collecting cavity for detecting the liquid level in the liquid collecting cavity and sending an alarm signal; a control device in communication connection with the liquid level alarm device and the first valve and the second valve respectively, the control device controlling the opening and closing of the first valve and the second valve according to the alarm signal; wherein the first valve and the second valve are electric valves.

7. The exhaust device according to claim 1, wherein: the first connecting pipe and the second connecting pipe are flexible pipes; the first connecting pipe and the second connecting pipe are arranged in an arc shape along an upwardly inclined direction.

8. The exhaust apparatus according to claim 1, characterized by Further comprising: an exhaust pipe in communication with the exhaust outlet at one end, the other end of the exhaust pipe being provided with a pipe clamp for controlling the on-off of the exhaust pipe.

9. The exhaust device according to claim 1, wherein: further comprising a liquid discharge pipe and a third valve; the liquid discharge pipe is in communication with the liquid collecting cavity and the liquid inlet distributor; and / or the liquid discharge pipe is in communication with the liquid collecting cavity and the liquid outlet distributor; wherein the connection between the liquid discharge pipe and the liquid collecting cavity is arranged close to the liquid inlet, and the third valve is arranged on the liquid discharge pipe for controlling the on-off of the liquid discharge pipe.

10. A server liquid cooling system, characterized by, The exhaust device comprises: a liquid inlet distributor comprising a first exhaust interface; a liquid outlet distributor comprising a second exhaust interface, the liquid inlet distributor and the liquid outlet distributor being in communication for transmitting cooling medium; and ​ The exhaust device comprises a first connecting pipe connected to the first exhaust interface, a second connecting pipe connected to the second exhaust interface, and a liquid collecting cavity comprising a liquid inlet and an air outlet, wherein the liquid inlet is communicated with the first connecting pipe and the second connecting pipe, the liquid collecting cavity is arranged above the first connecting pipe and the second connecting pipe, and the air outlet is located above the liquid inlet.

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