TW202347673A - Immersion water cooling system and method thereof - Google Patents

Abstract

An immersion water cooling system for a server cabinet is provided. The cooling system includes a plurality of server boxes, a cooling tank and a plurality of liquid pipes. The server box includes an electronic device immersed in the cooling liquid. The electronic device generates heat energy during operation and part of the cooling liquid evaporates into hot vapor. The cooling tank is connected to a plurality of server boxes and includes a condenser and a water storage part. The condenser is connected to a vent hole of the server box and condenses the hot vapor from the server box to form a cooling liquid. The water storage part stores the cooling liquid from the condenser, and a first end and a second end of the liquid pipe are respectively connected to the bottom of the water storage part and the bottom of the server box. The cooling liquid in the water storage part and the cooling liquid in the server box maintain the same liquid level.

Description

Immersion water cooling system and cooling method

This case relates to a water cooling system and its cooling method, especially an immersion water cooling system and its cooling method.

With the rapid development of technologies requiring high-speed computing such as 5th Generation mobile networks (5G), artificial intelligence, and the metaverse, the heat dissipation requirements for electronic components are becoming increasingly high. In addition, the consumption required for the heat dissipation process Energy sources are also receiving more and more attention.

One of the existing ways to dissipate heat from electronic components is to use high-speed operation of fans to generate air convection to remove the heat energy generated by electronic components. However, the heat dissipation method that uses air convection to remove hot air not only fails to save energy, but also creates huge noise. pollute. If the electronic components are immersed in cooling liquid for cooling so that the cooling liquid evaporates into vapor to remove the heat energy generated by the electronic components, and then the condensation technology is used to condense the vapor back into the cooling liquid, an additional water pump or water valve is required to control the condensation. Liquid circulation between the cooling liquid and the cooling liquid in which the electronic components are immersed.

Therefore, how to develop an immersion water cooling system and its cooling method that can improve the above-mentioned conventional technology is an urgent need at present.

The purpose of this case is to provide an immersion water cooling system and its cooling method, in which the cooling liquid in the server box and the cooling liquid in the water storage part are connected through a liquid connecting pipe to maintain the same liquid level. In this way, the cooling liquid that has been condensed in the water storage part can naturally flow back to the server box, without the need for additional water pumps or water valves to control the flow of cooling liquid.

According to the concept of this case, this case provides an immersion water cooling system for server cabinets. The immersion water cooling system includes a plurality of server boxes, cooling barrels and a plurality of liquid communication pipes. Each server box contains a cooling liquid, and each server box contains an electronic device immersed in the cooling liquid. The electronic device in at least one server box generates heat during operation, causing part of the cooling liquid to evaporate into heat. steam. The cooling tank is connected to a plurality of server boxes and includes a condenser and a water storage part. The condenser is connected to the exhaust hole of each server box, and the condenser condenses the hot vapor from the server box to form a cooling liquid. The water storage part is connected to the condenser, and the water storage part stores the cooling liquid from the condenser. The first end of each liquid communication pipe is connected to the bottom position of the water storage part, and the second end of each liquid communication pipe is connected to the bottom position of the corresponding server box. The cooling liquid in the water storage part passes through Each liquid communication pipe flows into each server box respectively. The cooling liquid in the water reservoir and the cooling liquid in each server box are maintained at the same liquid level.

According to the concept of this case, this case provides a cooling method for an immersion water cooling system, which includes: providing cooling liquid, a plurality of server boxes, cooling barrels, and a plurality of liquid communication pipes, part of which is contained in a plurality of servers. In the server box, another part of the cooling liquid is contained in the cooling tank. The cooling tank is connected to a plurality of server boxes and a plurality of liquid communication pipes; a plurality of electronic devices are immersed in the corresponding plurality of servers respectively. Cooling liquid in the box, wherein each server box also includes a vapor space disposed above the cooling liquid, and the vapor space of each server box is connected to the cooling barrel; running at least one server box Electronic device, in which the electronic device generates heat energy during operation to evaporate part of the cooling liquid in the server box into a hot vapor and flows to the vapor space; the condenser in the cooling tank condenses the liquid from the server box Hot steam is used to form a cooling liquid, wherein the cooling liquid flows into a water storage part of the cooling tank through a plurality of copper tubes of the condenser; and a bottom position of the water storage part is connected to each server through a plurality of liquid communication pipes A bottom position of the box allows the cooling liquid in the water storage part to flow into each server box through each liquid communication pipe, wherein the cooling liquid in the water storage part and the cooling liquid in each server box are maintained at the same level. the liquid level.

Some typical embodiments embodying the features and advantages of this case will be described in detail in the following description. It should be understood that this case can have various changes in different aspects without departing from the scope of this case, and the descriptions and illustrations are essentially for illustrative purposes and are not intended to limit this case.

Figure 1 is a schematic diagram of the system architecture of the immersion water-cooling system of the preferred embodiment of this case. As shown in Figure 1, the immersion water-cooling system 1 of this case includes cooling liquid L, a plurality of server boxes 2, and cooling barrels 3 and a plurality of liquid communication pipes 4. Part of the cooling liquid L is contained in a plurality of server boxes 2 , and another part of the cooling liquid L is contained in the cooling barrel 3 . Each server box 2 includes an electronic device 20 immersed in the cooling liquid L in the server box 2. Each server box 2 also includes a vapor space S disposed above the cooling liquid L, and each The vapor space S of a server box 2 is connected to the cooling barrel 3 . The electronic device 20 in at least one server box 2 generates heat during operation, causing part of the cooling liquid L to evaporate into hot vapor g and flow to the vapor space S. The electronic device 20 may be, for example, but not limited to a server. It should be noted that each server box 2 is a pressure-sealed box to prevent hot steam g from leaking. In some embodiments, the cooling liquid L is a non-conductive liquid and has a boiling point between 50°C and 60°C. Each server box 2 also includes an exhaust hole 21 , which is connected to the cooling barrel 3 and is structured to allow the hot steam g to flow to the cooling barrel 3 through the exhaust hole 21 . The cooling tank 3 includes a condenser 30 and a water storage part 31. The condenser 30 condenses the hot steam g from the server box 2 to form the cooling liquid L. The water storage part 31 is connected to the condenser 30, and the water storage part 31 stores Cooling liquid L from condenser 30. The water storage part 31 has a bottom position 32. Each server box 2 has a bottom position 22. Each liquid communication tube 4 has a first end 40 and a second end 41 respectively. The first end of each liquid communication tube 4 40 are respectively connected to the bottom position 32 of the water storage part 31, and the second end 41 of each liquid communication pipe 4 is respectively connected to the bottom position 22 of the corresponding server box 2. The bottom position 32 of the water storage part 31 is higher than the bottom position 22 of each server box 20 relative to the ground, so that the cooling liquid L in the water storage part 31 flows into each server box through each liquid communication pipe 4 Body 2. The cooling liquid L of the water storage part 31 and the cooling liquid L of each server box 2 are connected through a plurality of liquid connecting pipes 4 to maintain the same liquid level T. It should be noted that in this case, the liquid level T is It is the measured level of the cooling liquid L in the server box 2 and the water storage part 31, so the liquid level T has a measurement error range. Thereby, the cooling liquid that has been condensed in the water storage part can naturally flow back to the server box, without the need for additional water pumps or water valves to control the flow of cooling liquid.

In some embodiments, the immersion water cooling system 1 further includes an air pressure balance device 5 . The air pressure balance device 5 is connected to the cooling barrel 3 and is configured to adjust the air pressure in the cooling barrel 3 . The air pressure balancing device 5 includes, but is not limited to, a balloon or bellows that can expand or contract. In some embodiments, the air pressure balance device 5 adjusts the air pressure in the cooling barrel 3 through the expansion or contraction of the balloon or bellows. For example, when the server box 2 generates hot steam g too fast, the condenser 30 of the cooling barrel 3 cannot condense the hot steam g in time, which causes the hot steam g to accumulate in the cooling barrel 3 and cause the cooling barrel to collapse. The air pressure in tank 3 is too high. At this time, the air pressure balance device 5 can adjust the air pressure in the cooling barrel 3 through the expansion of the balloon or the bellows, so as to prevent the cooling barrel 3 from being deformed and causing damage.

In some embodiments, the immersion water-cooling system 1 shown in Figure 1 can also be used in server cabinets, as shown in Figure 2. Figure 2 shows another preferred embodiment of the case. The immersion water-cooling system is used for server cabinets. Side view of the three-dimensional structure of the machine cabinet. In this embodiment, the immersion water cooling system 1 is used in the server cabinet 10. The air pressure balance device 5 of the immersion water cooling system 1 includes an air box 50 and a connected connecting pipe 51. In some embodiments, the air box 50 and the corresponding The number of connecting pipes 51 is not limited to one. The connecting pipe 51 is connected to the cooling barrel 3. When the air pressure in the cooling barrel 3 is too large, the air pressure balance device 5 will expand part of the cooling barrel 3 through the relaxation of the wind box 50. The hot steam g is sucked into the air box 50 through the connecting pipe 51, whereby the air pressure in the cooling barrel 3 can be adjusted.

Please refer to Figures 2 and 3 at the same time. Figure 3 is a schematic three-dimensional structural diagram of the condenser of the immersion water cooling system in Figure 2. In this embodiment, the condenser 30 includes a first condenser tube 36 , a second condenser tube 37 , a plurality of bent and wound copper tubes 33 , a hot water output tube 34 and a cold water input tube 35 , wherein the first condenser tube 36 is connected At the first end 331 of each copper pipe 33, the second condensation pipe 37 is connected to the second end 332 of each copper pipe 33, and the first condensation pipe 36 and the second condensation pipe 37 are respectively connected to the hot water output pipe 34. And cold water input pipe 35. In addition, the cold water input pipe 35 is also connected to an external cooling tower (not shown), and the cooling water tower supplies cold water (or other condensed liquid, etc.) to the condenser 30 through the cold water input pipe 35 . Cold water is injected into the second condenser pipe 37 through the cold water input pipe 35 (as shown by the dotted arrow in Figure 2). The cold water flows through the second condenser pipe 37 into a plurality of copper pipes 33. The outer wall of the copper pipe 33 is caused by the cold water flowing through it. The temperature drops, causing the hot vapor g from the server box 2 to condense into the cooling liquid L when it contacts the outer wall of the copper tube 33 . At the same time, the heat energy lost by the hot steam g during the condensation process is conducted to the inside of the copper tube 33 to heat up the cold water and turn it into hot water, and the hot water is discharged through the first condensation pipe 36 and the hot water output pipe 34 (as shown in Figure 2 Indicated by the solid arrow). In some embodiments, the condenser 3 further includes a plurality of mounting brackets 38 connected to a plurality of copper pipes 33 . The mounting brackets 38 are structured to fix the condenser 3 in the cooling barrel 3 .

Figure 4 is a flow chart of the cooling method of the immersion water-cooling system in the preferred embodiment of this case. The cooling method of the immersion water-cooling system in this case is applicable to the aforementioned immersion water-cooling system 1. As shown in Figure 4, the cooling method of the immersion water cooling system in this case includes the following steps. In step S1, cooling liquid L, a plurality of server boxes 2, cooling barrels 3 and a plurality of liquid communication pipes 4 are provided, part of the cooling liquid L is accommodated in the plurality of server boxes 2, and the other part is The cooling liquid L is contained in the cooling tank 3 , and the cooling tank 3 is connected to a plurality of server boxes 2 and a plurality of liquid communication pipes 4 . In step S2, the plurality of electronic devices 20 are respectively immersed in the cooling liquid L in the corresponding plurality of server boxes 2, where each server box 2 also includes a vapor space S disposed above the cooling liquid L, And the vapor space S of each server box 2 is connected to the cooling barrel 3 . In step S3, the electronic device 20 in at least one server box 2 is operated. The heat energy generated by the electronic device 20 during operation causes part of the cooling liquid L in the server box 2 to evaporate into hot vapor g and flow to Vapor space S. In step S4, the hot vapor g from the server box 2 is condensed by the condenser 30 of the cooling barrel 3 to form a cooling liquid L. The cooling liquid L flows into the cooling liquid through the plurality of copper tubes 33 of the condenser 30. The water storage part 31 of the bucket 3. In step S5 , the bottom position 32 of the water storage part 31 is connected to the bottom position 22 of each server box 2 through a plurality of liquid communication pipes 4 . In step S6 , the bottom position 32 of the water storage part 31 is set higher than the bottom position 22 of each server box 2 relative to the ground, so that the cooling liquid L in the water storage part 31 flows in through each liquid communication pipe 4 . 2 per server box. The cooling liquid L in the water reservoir 31 and the cooling liquid L in each server box 2 are maintained at the same liquid level T through the plurality of liquid connecting pipes 4 .

In some embodiments, the cooling method of the immersion water cooling system in this case further includes the step of providing an air pressure balance device 5 , where the air pressure balance device 5 is connected to the cooling barrel 3 and is configured to adjust the air pressure in the cooling barrel 3 .

In some embodiments, the cooling method of the immersion water cooling system in this case also includes the following steps: increasing the number of operating multiple electronic devices 20 to increase the hot steam g received by the condenser 30 to increase the air pressure in the cooling barrel 3 and the air pressure balance device 5 connected to the cooling barrel 3 absorbs the hot steam g in the cooling barrel 3 and expands, so that the air pressure in the cooling barrel 3 is maintained within a constant pressure range.

In some embodiments, the cooling method of the immersion water-cooling system in this case also includes the following steps: reducing the number of operating electronic devices 20 to reduce the hot steam g received by the condenser 30 to increase the air pressure in the cooling barrel 3 decrease; and the air pressure balance device 5 contracts to release the gas in the gas balance device 3 to the cooling barrel 3, so that the air pressure in the cooling barrel 3 is maintained within a constant pressure range.

To sum up, this case provides an immersion water cooling system and its cooling method, in which the cooling liquid in the server box and the cooling liquid in the water storage part are connected through a liquid connecting pipe to maintain the same liquid level. In this way, the cooling liquid that has been condensed in the water storage part can naturally flow back to the server box, without the need for additional water pumps or water valves to control the flow of cooling liquid.

It should be noted that the above are only preferred embodiments proposed to illustrate this case. This case is not limited to the embodiments described. The scope of this case is determined by the scope of the attached patent application. Moreover, this case may be modified in various ways by those who are familiar with this technology, but it will not deviate from the intended protection within the scope of the attached patent application.

1: Immersion water cooling system 10:Server cabinet 2:Server box 20: Electronic devices 21:Exhaust hole 22:The bottom position of the server box 3: Cooling barrel tank 30:Condenser 31: Water storage department 32: The bottom position of the water storage part 33:Copper pipe 331:The first end of the copper tube 332: The second end of the copper tube 34: Hot water output pipe 35:Cold water input pipe 36: First condenser tube 37:Second condenser tube 38:Mounting rack 4: Liquid communication tube 40: The first end of the liquid communication tube 41: The second end of the liquid communication tube 5: Air pressure balance device 50: Bellows 51:Connecting pipe L: cooling liquid g: hot steam S: steam space T: liquid level S1, S2, S3, S4, S5, S6: steps

Figure 1 is a schematic diagram of the system architecture of the immersion water cooling system in the preferred embodiment of this case.

Figure 2 is a side view of the three-dimensional structure of an immersion water-cooling system used in a server cabinet according to another preferred embodiment of this case.

Figure 3 is a schematic three-dimensional structural diagram of the condenser in the immersion water cooling system in Figure 2.

Figure 4 is a flow chart of the cooling method of the immersion water cooling system in the preferred embodiment of this case.

1: Immersion water cooling system

2:Server box

20: Electronic devices

21:Exhaust hole

22:The bottom position of the server box

3: Cooling barrel tank

30:Condenser

31: Water storage department

32: The bottom position of the water storage part

4: Liquid communication tube

40: The first end of the liquid communication tube

41: The second end of the liquid communication tube

5: Air pressure balance device

L: cooling liquid

g: hot steam

T: liquid level

Claims (12)

An immersion water cooling system for server cabinets containing: A plurality of server boxes, wherein each server box contains a cooling liquid, and each server box contains an electronic device immersed in the cooling liquid, and the electronic device in at least one server box When the device is in operation, it generates heat energy to evaporate part of the cooling liquid into hot vapor; A cooling tank, connected to a plurality of server boxes, including: a condenser connected to an exhaust hole of each server box, wherein the condenser condenses the hot vapor from the server box to form the cooling liquid; and a water storage part connected to the condenser, wherein the water storage part stores the cooling liquid from the condenser; and A plurality of liquid communication tubes, wherein a first end of each liquid communication tube is connected to a bottom position of the water storage part, and a second end of each liquid communication tube is connected to the corresponding server. A bottom position of the box; The cooling liquid in the water storage part flows into each of the server boxes through each of the liquid communication pipes; The cooling liquid in the water storage part and the cooling liquid in each server box are maintained at the same liquid level. The immersion water cooling system of claim 1 further includes an air pressure balance device, wherein the air pressure balance device is connected to the cooling barrel and is configured to regulate an air pressure in the cooling barrel. The immersion water cooling system of claim 2, wherein the air pressure balance device includes a balloon or a bellows, and the balloon or the bellows adjusts the air pressure in the cooling tank by contraction or relaxation. The immersion water cooling system of claim 1, wherein the cooling liquid is a non-conductive liquid and has a boiling point between 50°C and 60°C. The immersion water-cooling system of claim 1, wherein the condenser includes a first condenser tube, a second condenser tube, a plurality of copper tubes, a hot water output tube and a cold water input tube, each of the copper tubes Each copper tube has a first end and a second end, and each copper tube is bent and wound. The first condenser tube is connected to the first end of each copper tube, and the second condenser tube is connected to each The second end of the copper pipe, the first condenser pipe and the second condenser pipe are connected to the hot water output pipe and the cold water input pipe respectively. The immersion water cooling system of claim 5, wherein a cold water is injected into the second condenser pipe through the cold water input pipe, and the cold water flows into the plurality of copper pipes through the second condenser pipe, and each of the copper pipes An outer wall of the tube is cooled by the cold water circulating, so that the hot vapor from the server box condenses into the cooling liquid when it contacts the outer wall of each copper tube, wherein the hot vapor is condensed during the condensation process. The lost heat energy is conducted to the inside of each copper tube, causing the cold water in each copper tube to heat up and turn into hot water. The hot water is discharged through the first condensation pipe and the hot water output pipe. The immersion water cooling system of claim 1, wherein the bottom position of the water storage part is higher than the bottom position of each server box relative to a ground, so that the cooling liquid in the water storage part The liquid flows into each server box respectively through each liquid communication pipe. A cooling method for an immersion water cooling system, including: A cooling liquid, a plurality of server boxes, a cooling tank and a plurality of liquid communication pipes are provided, part of the cooling liquid is contained in the plurality of server boxes, and the other part of the cooling liquid is contained in the In the cooling barrel tank, the cooling barrel tank is connected to the plurality of server boxes and the plurality of liquid communication pipes; A plurality of electronic devices are respectively immersed in the cooling liquid in a plurality of corresponding server boxes, wherein each server box also includes a vapor space disposed above the cooling liquid, and each server box The vapor space of the body is connected to the cooling barrel; Operate the electronic device in at least one of the server boxes, wherein the electronic device generates a thermal energy during operation to evaporate the cooling liquid in a portion of the server box into a hot vapor and flow to the vapor space; A condenser of the cooling barrel condenses the hot vapor from the server box to form the cooling liquid, wherein the cooling liquid flows into a water storage of the cooling barrel through a plurality of copper tubes of the condenser Department; and A bottom position of the water storage part is connected to a bottom position of each server box through the plurality of liquid communication pipes, so that the cooling liquid in the water storage part flows in through each of the liquid communication pipes. Each server box, The cooling liquid in the water storage part and the cooling liquid in each server box are maintained at the same liquid level. The cooling method of the immersion water cooling system as described in request item 8 also includes: An air pressure balancing device is provided, wherein the air pressure balancing device is connected to the cooling barrel and is configured to regulate an air pressure in the cooling barrel. The cooling method of the immersion water cooling system as described in claim 9 also includes: Increase the number of operating the plurality of electronic devices to increase the hot steam received by the condenser to increase the air pressure in the cooling barrel; and The air pressure balance device connected to the cooling barrel absorbs the hot vapor in the cooling barrel and expands it, so that the air pressure in the cooling barrel is maintained within a constant pressure range. The cooling method of the immersion water cooling system as described in claim 10 also includes: Reduce the number of operating the plurality of electronic devices to reduce the hot steam received by the condenser to reduce the air pressure in the cooling barrel; and The air pressure balance device contracts to release a gas in the gas balance device to the cooling barrel, so that the gas pressure in the cooling barrel is maintained within the constant air pressure range. The cooling method of the immersion water cooling system as described in request item 8 also includes: By arranging the bottom position of the water storage part to be higher than the bottom position of each server box relative to a ground, the cooling liquid in the water storage part flows into each server through each liquid communication pipe. The server box.

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