Cooling liquid recovery system

Abstract

The utility model discloses a cooling liquid recovery system. The cooling liquid recovery system comprises a processing device, low-temperature water supply equipment, a condensing device, an air return device and a concentration detector, the processing device can control the low-temperature water supply equipment to be started according to the concentration signal when it is judged that the concentration of the gaseous cooling liquid is higher than a high standard threshold value, so that the low-temperature water supply equipment can start to generate low-temperature water with the temperature lower than the dew point temperature of the cooling liquid, and the low-temperature water can circulate in a condensation pipeline of the condensation device; therefore, gaseous cooling liquid flowing through the condensing device can be condensed into liquid cooling liquid. After the processing device controls the low-temperature water supply equipment to be started, the processing device can control the low-temperature water supply equipment to be closed according to the concentration signal when it is judged that the concentration of the gaseous cooling liquid is lower than a low standard threshold value.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of recovery systems, in particular to a kind of cooling liquid recovery system. BACKGROUND

[0002] Part of the existing AI server, is using immersion cooling equipment, for heat dissipation. Immersion cooling equipment is to set up in the cooling tank full of cooling liquid. Since cooling liquid volatilizes after being heated, it will enter the air in the factory building, thereby possibly generating bad influence on the health of relevant personnel in the factory building. UTILITY MODEL CONTENTS

[0003] The utility model discloses a kind of cooling liquid recovery system, mainly to improve the air in the factory building with immersion cooling equipment, there is cooling liquid after volatilization, thereby possibly generating bad influence on the health of relevant personnel in the factory building.

[0004] One embodiment of the utility model discloses a kind of cooling liquid recovery system, it is suitable for recycling a gaseous cooling liquid in a factory building, the ground of factory building is provided with at least one immersion cooling equipment, immersion cooling equipment includes a cooling tank, cooling tank is used to fill a liquid cooling liquid, the heat energy transferred by the product to be cooled in the cooling tank can be exchanged with liquid cooling liquid;Liquid cooling liquid can volatilize into gaseous cooling liquid;Cooling liquid recovery system includes: a processing device;Low-temperature water supply equipment, it is electrically connected processing device, low-temperature water supply equipment can be controlled by processing device, to generate a low-temperature water;Condensing equipment, it includes at least one condensing pipeline, condensing pipeline is set in a receiving tank lower than ground;Receiving tank is used to receive gaseous cooling liquid, low-temperature water flows in condensing pipeline, liquid cooling liquid in receiving tank can be converted into liquid cooling liquid after contacting condensing pipeline;Liquid cooling liquid in receiving tank can flow to a recovery bucket;Air return device, it is set in the factory building, air return device is used to make the air in the factory building, can cyclically pass through condensing equipment;At least one concentration detector, it is used to detect the concentration of gaseous cooling liquid in the factory building, and generate a concentration signal according to it;Wherein, processing device can determine whether the concentration of gaseous cooling liquid in the factory building is higher than a high threshold according to concentration signal;If it is determined that the concentration of gaseous cooling liquid is higher than high threshold, control low-temperature water supply equipment to start, so that low-temperature water supply equipment can start to generate low-temperature water with temperature lower than dew point temperature of gaseous cooling liquid, so that condensing pipeline of condensing equipment can circulate low-temperature water with temperature lower than dew point temperature within a preset time;Wherein, after processing device controls low-temperature water supply equipment to start, processing device can continue to determine whether the concentration of gaseous cooling liquid in the factory building is lower than a low threshold according to concentration signal;If it is determined that it is lower than low threshold, control low-temperature water supply equipment to close.

[0005] Optionally, the condensing device comprises at least one fan, and the processing device is electrically connected to the fan, and the processing device is capable of controlling the rotating speed of the fan according to the concentration signal, so that the rotating speed of the fan is inversely proportional to the concentration of the gaseous cooling liquid in the factory building.

[0006] Optionally, the cooling liquid recovery system further comprises a temperature detector, and the processing device is electrically connected to the temperature detector, and the temperature detector is used to detect a real-time temperature of the factory building to generate a temperature signal; the processing device is capable of judging whether the real-time temperature of the factory building is higher than a default high temperature according to the temperature signal; if it is judged that the real-time temperature is higher than the default high temperature, the processing device controls the low-temperature water supply device to start, so that the low-temperature water supply device can start to generate low-temperature water lower than the dew point temperature, and the condensing pipeline of the condensing device can circulate the low-temperature water lower than the dew point temperature within a preset time; wherein, after the processing device controls the low-temperature water supply device to start, the processing device is capable of continuously judging whether the real-time temperature of the factory building is lower than a default low temperature according to the temperature signal; if it is judged that the real-time temperature is lower than the default low temperature, the processing device controls the low-temperature water supply device to stop.

[0007] Optionally, the cooling liquid recovery system further comprises a humidity detector, and the processing device is electrically connected to the humidity detector, and the humidity detector is used to detect a real-time humidity of the factory building to generate a humidity signal; wherein, after the processing device controls the low-temperature water supply device to start, the processing device is capable of judging whether the real-time humidity of the factory building is lower than a preset humidity according to the humidity signal; if it is judged that the real-time humidity is lower than the preset humidity, the processing device controls the low-temperature water supply device to stop.

[0008] Optionally, the cooling liquid recovery system further comprises a return device, and the return device comprises at least one return pipeline, at least one pump and at least one filtering device; the return pipeline is used to connect the immersion cooling device and the recovery bucket; the pump is used to make the liquid in the recovery bucket flow into the cooling tank of the immersion cooling device through the return pipeline and the filtering device; and the filtering device is used to filter the non-liquid cooling liquid in the liquid flowing from the recovery bucket into the cooling tank.

[0009] Optionally, the density of the cooling liquid is greater than the density of water, the liquid cooling liquid in the recovery bucket is located at the bottom of the recovery bucket, and the water condensed and recovered from the factory building is located above the liquid cooling liquid in the recovery bucket; the dew point temperature of the gaseous cooling liquid is greater than 10 degrees Celsius; and the return pipeline of the return device is connected to the bottom of the recovery bucket.

[0010] Optionally, the recovery bucket is provided with a detector, and the processing device is electrically connected to the detector; the processing device is capable of judging the liquid level in the recovery bucket according to a detection signal generated by the detector; and when the processing device judges that the liquid level in the recovery bucket is higher than a preset height, the processing device controls the pump, so that the liquid in the recovery bucket flows into the cooling tank of the immersion cooling device through the filtering device.

[0011] Optionally, a flow rate controller is also installed between the condensation equipment and the low-temperature water supply equipment. The processing device is electrically connected to the flow rate controller. The processing device can control the flow rate controller according to the concentration signal so that the flow rate of the low-temperature water in the condensation pipeline is proportional to the concentration of the gaseous coolant in the plant.

[0012] Optionally, the coolant recovery system further includes at least one auxiliary ventilation device, which includes at least one air guide member and at least one exhaust fan. One end of the air guide member is located near a door of the immersion cooling equipment, and the other end of the air guide member is located near the condensing equipment. The exhaust fan is used to guide the air around the door to the condensing equipment. The processing device is electrically connected to the exhaust fan, and the processing device can control the exhaust fan to start when the door is opened; the processing device can control the exhaust fan to shut down after a preset time when the door is closed.

[0013] Optionally, the boiling point of the liquid coolant is below 50 degrees Celsius, and the dew point temperature of the gaseous coolant is above 10 degrees Celsius, and the density of the liquid coolant is greater than 1 kg / m³. 3 .

[0014] In summary, the coolant recovery system of this invention can be used to collect gaseous coolant from the air in factories equipped with immersion cooling equipment, thereby reducing the health risks to personnel in the factory due to the gaseous coolant.

[0015] To further understand the features and technical content of this utility model, please refer to the following detailed description and drawings of this utility model. However, these descriptions and drawings are only used to illustrate this utility model and are not intended to limit the scope of protection of this utility model in any way. Attached Figure Description

[0016] Figure 1 and Figure 2 These are schematic diagrams and block diagrams of the first embodiment of the coolant recovery system of this utility model.

[0017] Figure 3 and Figure 4 These are schematic diagrams and block diagrams of the second embodiment of the coolant recovery system of this utility model.

[0018] Figure 5 This is a schematic diagram of the third embodiment of the coolant recovery system of this utility model. Detailed Implementation

[0019] In the following description, if a specific drawing is indicated or shown in a specific drawing, it is only to emphasize that most of the relevant content mentioned in the following description appears in that specific drawing, but does not limit the following description to refer only to that specific drawing.

[0020] Please refer to the following: Figure 1 and Figure 2 These are block diagrams and schematic diagrams of the first embodiment of the coolant recovery system of this utility model. The coolant recovery system 100 of this utility model is suitable for recovering a gaseous coolant in a factory building C. At least one immersion cooling device A is installed on a floor C1 of the factory building C. The immersion cooling device A includes a cooling tank A1, which is filled with a liquid coolant D. The heat energy transferred by a product B to be cooled, which is placed in the cooling tank A1, can exchange heat with the liquid coolant D, and the liquid coolant D can evaporate into a gaseous coolant.

[0021] The coolant recovery system 100 includes: a processing unit 1, a cryogenic water supply unit 2, a condenser unit 3, a return air unit 4, and at least one concentration detector 5. The processing unit 1 is electrically connected to the cryogenic water supply unit 2 and the return air unit 4. The processing unit 1 can be, for example, various computers, servers, etc.

[0022] The cryogenic water supply device 2 is electrically connected to the processing device 1. The cryogenic water supply device 2 can be controlled by the processing device 1 to generate cryogenic water. The cryogenic water supply device 2 includes at least one inlet pipe 21 and at least one outlet pipe 22. The inlet pipe 21 and the outlet pipe 22 are connected to a condenser pipe (not shown) in a condenser 30 of the condenser device 3. The cryogenic water can enter the condenser pipe through the inlet pipe 21, absorb heat, and then flow back to the cryogenic water supply device 2 through the outlet pipe 22. The condenser pipe is located in a receiving tank C11 below ground level C1. The receiving tank C11 is used to receive gaseous coolant, and the liquid coolant D in the receiving tank C11 can be converted into liquid coolant D after contacting the condenser pipe. The liquid coolant D in the receiving tank C11 can flow to a recovery tank 31. In practice, the receiving tank C11 can be constructed by first digging a trench in the ground of the plant C, and then laying a material in the trench to facilitate the flow of liquid coolant D, thereby guiding the liquid coolant D to the recovery tank 31. The location of the receiving tank C11 in the plant C can be designed according to actual needs and is not limited here.

[0023] The condensing equipment 3 includes condensing pipes that can be designed according to actual needs. The condensing equipment 3 may also include an intake fan and / or an exhaust fan, thereby allowing a larger volume of air in the plant C to flow through the condensing pipes.

[0024] A return air device 4 is installed in plant C. The return air device 4 is used to circulate the air in plant C through the condenser 3. In practice, the return air device 4 may include multiple fans 41 and multiple airflow channels 42. One end of each airflow channel 42 is located near the receiving tank C11, and the other end of the airflow channel 42 may be located near the ceiling of plant C. Fans 41 may be installed at both ends of the airflow channel 42. The fan 41 near the receiving tank C11 guides the gas upwards along the airflow channel 42, while the fan 41 at the other end of each airflow channel 42 guides the gas in the airflow channel 42 out into plant C.

[0025] Concentration detector 5 is used to detect the concentration of gaseous coolant in plant C and generate a concentration signal 51 accordingly. Processing device 1 is electrically connected to concentration detector 5, and processing device 1 can determine whether the concentration of gaseous coolant in plant C is higher than a high threshold based on concentration signal 51.

[0026] If the processing device 1 determines, based on the concentration signal 51, that the concentration of the gaseous coolant is higher than the high threshold, the processing device 1 will control the low-temperature water supply device 2 to start, so that the low-temperature water supply device 2 can start generating low-temperature water with a temperature lower than the dew point temperature, so that the condenser pipe of the condenser device 3 can be circulated with low-temperature water with a temperature lower than the dew point temperature for a preset time.

[0027] After the processing device 1 controls the start of the low-temperature water supply equipment 2, the processing device 1 can continuously determine whether the concentration of the gaseous coolant in the plant C is lower than a low threshold value based on the concentration signal 51. When the processing device 1 determines that the concentration is lower than the low threshold value based on the concentration signal 51, the processing device 1 will control the low-temperature water supply equipment 2 to shut down.

[0028] As described above, by designing the concentration detector 5, the processing device 1 can control the low-temperature water supply equipment 2 to start only when the concentration of gaseous coolant in plant C is higher than the high threshold. After the low-temperature water supply equipment 2 is turned on, the processing device 1 will control the low-temperature water supply equipment 2 to shut down when the concentration of gaseous coolant in plant C is lower than the low threshold. This design can effectively save energy.

[0029] In an optional embodiment, the boiling point of the liquid coolant D is below 50 degrees Celsius, and the dew point temperature of the gaseous coolant is above 10 degrees Celsius, and the density of the liquid coolant D is greater than 1 kg / m³. 3Specifically, in the immersion cooling equipment A, the cooling tank A1 may contain a server. The coolant filled in the cooling tank A1 may be a fluorinated liquid. Since gaseous fluorinated liquid is denser than air, it will sink to the ground level C1. Because the receiving tank C11 is located below ground level C1, most of the gaseous fluorinated liquid will flow into the receiving tank C11. The dew point temperature of the fluorinated liquid is above 0 degrees Celsius. Therefore, when the gaseous fluorinated liquid comes into contact with the condenser pipes and transforms into liquid fluorinated liquid, the water vapor in the plant C has not yet condensed into liquid. Thus, the liquid in the receiving tank C11 is mostly liquid fluorinated liquid. In practice, a fluorinated liquid with an appropriate dew point temperature can be selected based on the normal operating temperature of the plant C, so that the temperature of the low-temperature water in the condenser pipes is lower than the dew point temperature but higher than the dew point temperature of the water vapor in the air of the plant C.

[0030] The specific gravity of liquid fluorinated liquid is greater than that of water. Therefore, after a period of sedimentation, the liquid fluorinated liquid flowing from the receiving tank C11 into the recovery tank 31 will settle at the bottom of the recovery tank 31, while the water condensed and recovered from the plant C is located above the liquid coolant D in the recovery tank 31.

[0031] In one variant embodiment, a flow rate controller 23 is further provided between the condensation device 3 and the cryogenic water supply device 2. The processing device 1 is electrically connected to the flow rate controller 23. The processing device 1 can control the flow rate controller 23 according to the concentration signal 51, so that the flow rate of the cryogenic water in the condensation pipe is proportional to the concentration of the gaseous coolant in the plant C. This design allows the gaseous coolant in the plant C to be converted into liquid coolant D, and can accelerate the decrease in the concentration of the gaseous coolant in the plant C.

[0032] In one variation, the condensing device 3 may further include at least one fan 41. The number of fans 41 included in the condensing device 3 can be designed according to actual needs; for example, the condensing device 3 may include an intake fan and / or an exhaust fan. The processing device 1 is electrically connected to the fan 41, and the processing device 1 can control the speed of the fan 41 according to the concentration signal 51, so that the speed of the fan 41 is inversely proportional to the concentration of the gaseous coolant in the plant C. This design can also accelerate the decrease of the concentration of the gaseous coolant in the plant C. The above two variations can also be combined to form a new embodiment.

[0033] In one embodiment, the coolant recovery system 100 further includes a return device 6, which includes at least one return pipe 61, at least one pump 62, and at least one filter device 63. The return pipe 61 is used to connect the immersion cooling device A and the recovery tank 31. The pump 62 is used to allow the liquid in the recovery tank 31 to enter the cooling tank A1 of the immersion cooling device A through the return pipe 61 and the filter device 63. The filter device 63 is used to filter out non-liquid coolant substances from the liquid entering the cooling tank A1 from the recovery tank 31. In the example where the specific gravity of the liquid coolant D is greater than that of water, the return pipe 61 of the return device 6 is connected to the bottom of the recovery tank 31, thereby ensuring that the liquid in the return pipe 61 is mostly liquid coolant D.

[0034] In one embodiment, the recycling bin 31 may also be equipped with a detector 32. The processing device 1 is electrically connected to the detector 32, and the processing device 1 can determine the liquid level in the recycling bin 31 based on a detection signal 321 generated by the detector 32. When the processing device 1 determines that the liquid level in the recycling bin 31 is higher than a preset height, it will control the pump 62 to allow the liquid in the recycling bin 31 to flow through the filter device 63 into the cooling tank A1 of the immersion cooling equipment A. Similarly, each cooling tank A1 may also be equipped with a detector, and the processing device 1 receives the detection signal transmitted by the detector in the cooling tank A1 and determines that the liquid level in the cooling tank A1 is lower than the preset height. The processing device 1 may also control the pump 62 to allow the liquid in the recycling bin 31 to flow through the filter device 63 into the cooling tank A1 of the immersion cooling equipment A.

[0035] Please refer to the following: Figure 3 and Figure 4 The figures shown are schematic diagrams and block diagrams of a second embodiment of the coolant recovery system of this utility model. One difference between this embodiment and the previous embodiment is that the coolant recovery system 100 further includes a temperature detector 7. The processing device 1 is electrically connected to the temperature detector 7, which is used to detect a real-time temperature of the plant C to generate a temperature signal 71. The processing device 1 can determine whether the real-time temperature of the plant C is higher than a default high temperature based on the temperature signal 71.

[0036] If the real-time temperature is determined to be higher than the default high temperature, the low-temperature water supply device 2 is activated so that it can start generating low-temperature water below the dew point temperature, and so that the condenser pipe of the condenser 3 can be circulated with low-temperature water below the dew point temperature of the gaseous coolant within a preset time.

[0037] After the processing device 1 controls the start of the low-temperature water supply equipment 2, the processing device 1 can continuously determine whether the real-time temperature in the plant C is lower than a default low temperature based on the temperature signal 71. If it is determined that the temperature is lower than the preset low temperature, the processing device 1 controls the low-temperature water supply equipment 2 to shut down.

[0038] One difference between this embodiment and the previous embodiment is that the coolant recovery system 100 also includes a humidity detector 8. The processing device 1 is electrically connected to the humidity detector 8. The humidity detector 8 is used to detect a real-time humidity of the plant C to generate a humidity signal 81.

[0039] After the processing device 1 controls the low-temperature water supply equipment 2 to start, the processing device 1 can determine whether the real-time humidity in the plant C is lower than a preset humidity based on the humidity signal 81. If it is determined that the humidity is lower than the preset humidity, the processing device 1 controls the low-temperature water supply equipment 2 to shut down.

[0040] As described above, specifically, the low-temperature water supply equipment 2 is kept on and continuously generates low-temperature water, which consumes a large amount of electrical energy. Therefore, through the design of the temperature detector 7 and / or humidity detector 8, the low-temperature water supply equipment 2 can be turned on only when specific conditions are met, and automatically turned off after the specific conditions are met. In this way, the overall power consumption of the coolant recovery system 100 can be greatly reduced.

[0041] It should be noted that in this embodiment, the factory C is equipped with both temperature detector 7 and humidity detector 8. However, in different embodiments, the factory C may be equipped with only temperature detector 7 (or humidity detector 8) and no humidity detector 8 (or temperature detector 7).

[0042] Please see Figure 5 This diagram illustrates a third embodiment of the coolant recovery system of this invention. The most significant difference between this embodiment and the previous embodiments is that the coolant recovery system 100 may further include at least one auxiliary ventilation device 9. The auxiliary ventilation device 9 includes at least one air guide member 91 and at least one exhaust fan 92. One end of the air guide member 91 is located adjacent to a door A2 of the immersion cooling device A, and the other end of the air guide member 91 is located adjacent to the condensing device 3. The exhaust fan 92 is used to guide the air around the door A2 to the condensing device 3. The air guide member 91 may be, for example, a duct or any component capable of guiding gas.

[0043] The processing device is electrically connected to the exhaust fan 92. The processing device can control the exhaust fan 92 to start when the hatch A2 is opened. The processing device can also control the exhaust fan 92 to shut down after a preset time when the hatch A2 is closed. Therefore, through the design of the auxiliary exhaust device 9, most of the gaseous coolant escaping from the cooling tank A1 can be quickly channeled into the receiving tank C11 of the condensation equipment 3 in real time, thereby significantly reducing the amount of gaseous coolant escaping into the plant C. This effectively controls the concentration of gaseous coolant in the plant C.

[0044] It should be noted that in different embodiments, the air guide component 91 may also be integrated into the immersion cooling device A, and the air guide component 91 may be a gas channel, with one opening of the gas channel adjacent to the hatch and the other opening of the gas channel facing the receiving groove C11.

[0045] In summary, the coolant recovery system of this invention can monitor the concentration of gaseous coolant in the factory using a concentration detector, and activate the low-temperature water equipment in a timely manner. This effectively collects the gaseous coolant that has evaporated into the factory, converts it into liquid coolant, and stores it in a recovery tank. This coolant recovery system can effectively control the concentration of gaseous coolant in the factory air, thereby preventing the gaseous coolant from affecting the health of personnel in the factory.

[0046] The above description is only an optional and feasible embodiment of the present utility model, and does not limit the patent scope of the present utility model. Therefore, all equivalent technical changes made based on the contents of the present utility model specification and drawings are included in the protection scope of the present utility model.

Claims

1. A coolant recovery system, characterized in that, The coolant recovery system is suitable for recovering a gaseous coolant in a factory building. At least one immersion cooling device is installed on the floor of the factory building. The immersion cooling device includes a cooling tank filled with a liquid coolant. The heat transferred by a product to be cooled, placed in the cooling tank, can exchange heat with the liquid coolant. The liquid coolant can evaporate into the gaseous coolant. The coolant recovery system includes: A processing device; A low-temperature water supply device is electrically connected to the processing device, and the low-temperature water supply device can be controlled by the processing device to generate low-temperature water; A condensation device includes at least one condensation pipe disposed in a receiving tank below the ground level; the receiving tank is used to receive the gaseous coolant, and the low-temperature water flows through the condensation pipe; the liquid coolant in the receiving tank, upon contact with the condensation pipe, can be converted into liquid coolant; the liquid coolant in the receiving tank can flow to a recovery tank; A return air device is installed in the plant, which is used to circulate the air in the plant through the condensation equipment. At least one concentration detector is used to detect the concentration of the gaseous coolant in the plant and generate a concentration signal accordingly; The processing device can determine whether the concentration of the gaseous coolant in the plant is higher than a high threshold based on the concentration signal. If the concentration of the gaseous coolant is higher than the high threshold, the device controls the low-temperature water supply equipment to start, so that the low-temperature water supply equipment can start generating low-temperature water with a temperature lower than the dew point temperature of the gaseous coolant, and so that the low-temperature water with a temperature lower than the dew point temperature can flow in the condensation pipe of the condensation equipment for a preset time. Wherein, after the processing device controls the low-temperature water supply equipment to start, the processing device can continuously determine whether the concentration of the gaseous coolant in the plant is lower than a low threshold value based on the concentration signal; if it is determined to be lower than the low threshold value, the processing device controls the low-temperature water supply equipment to shut down.

2. The coolant recovery system according to claim 1, characterized in that, The condensation equipment includes at least one fan, and the processing device is electrically connected to the fan. The processing device can control the speed of the fan according to the concentration signal so that the speed of the fan is inversely proportional to the concentration of the gaseous coolant in the plant.

3. The coolant recovery system according to claim 1, characterized in that, The coolant recovery system also includes a temperature detector, and the processing device is electrically connected to the temperature detector. The temperature detector is used to detect a real-time temperature of the plant to generate a temperature signal. The processing device can determine whether the real-time temperature of the plant is higher than a default high temperature based on the temperature signal. If the real-time temperature is determined to be higher than the default high temperature, the low-temperature water supply equipment is activated so that it can begin generating low-temperature water below the dew point temperature, ensuring that the condenser pipe of the condenser is circulated with low-temperature water below the dew point temperature for the preset time. After the processing device activates the low-temperature water supply equipment, it continuously determines whether the real-time temperature in the plant is lower than a default low temperature based on the temperature signal. If it determines that the temperature is lower than the default low temperature, the low-temperature water supply equipment is shut down.

4. The coolant recovery system according to claim 1, characterized in that, The coolant recovery system also includes a humidity detector. The processing device is electrically connected to the humidity detector, which is used to detect the real-time humidity of the plant to generate a humidity signal. After the processing device controls the low-temperature water supply equipment to start, the processing device can determine whether the real-time humidity in the plant is lower than a preset humidity based on the humidity signal. If it is determined that the humidity is lower than the preset humidity, the processing device controls the low-temperature water supply equipment to shut down.

5. The coolant recovery system according to claim 1, characterized in that, The coolant recovery system further includes a return device, which includes at least one return pipeline, at least one pump, and at least one filter. The return pipeline is used to connect the immersion cooling equipment and the recovery tank. The pump is used to allow the liquid in the recovery tank to enter the cooling tank of the immersion cooling equipment through the return pipeline and the filter. The filter is used to filter out substances that are not liquid coolant from the liquid entering the cooling tank from the recovery tank.

6. The coolant recovery system according to claim 5, characterized in that, The density of the coolant is greater than that of water. The liquid coolant in the recovery tank sinks to the bottom of the recovery tank, while the water condensed and recovered in the plant is above the liquid coolant in the recovery tank. The dew point temperature of the gaseous coolant is greater than 10 degrees Celsius. The return pipeline of the return device is connected to the vicinity of the bottom of the recovery tank.

7. The coolant recovery system according to claim 5, characterized in that, The recycling bin is equipped with a detector, and the processing device is electrically connected to the detector. The processing device can determine the liquid level in the recycling bin based on a detection signal generated by the detector. When the processing device determines that the liquid level in the recycling bin is higher than a preset height, it will control the pump to make the liquid in the recycling bin flow through the filter device into the cooling tank of the immersion cooling equipment.

8. The coolant recovery system according to claim 1, characterized in that, A flow rate controller is also provided between the condensation equipment and the low-temperature water supply equipment. The processing device is electrically connected to the flow rate controller. The processing device can control the flow rate controller according to the concentration signal so that the flow rate of the low-temperature water in the condensation pipeline is proportional to the concentration of the gaseous coolant in the plant.

9. The coolant recovery system according to claim 1, characterized in that, The coolant recovery system further includes at least one auxiliary ventilation device, which comprises at least one air guide member and at least one exhaust fan. One end of the air guide member is disposed near a door of the immersion cooling equipment, and the other end of the air guide member is disposed near the condensation equipment. The exhaust fan is used to guide the air around the hatch to the condensation device; wherein, the processing device is electrically connected to the exhaust fan, and the processing device can control the exhaust fan to start when the hatch is opened; the processing device can control the exhaust fan to turn off after a preset time when the hatch is closed.

10. The coolant recovery system according to claim 1, characterized in that, The liquid coolant has a boiling point below 50 degrees Celsius, and the gaseous coolant has a dew point temperature above 10 degrees Celsius. The density of the liquid coolant is greater than 1 kg / m³. 3 .

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