Direct-expansion air-cooled / water-cooled composite air-conditioning system for liquid cooling of intelligent computing center

Abstract

The utility model discloses a direct expansion type air-cooling / water-cooling composite air-conditioning system for liquid cooling of an intelligent computing center. The direct expansion type air-cooling / water-cooling composite air-conditioning system comprises a fan unit, a water machine unit and a heat exchange module, the heat exchange module is connected with the water machine unit through a cooling water supply pipe I and a cooling water return pipe I; the fan unit is communicated with the cooling water supply pipe I through a cooling water supply pipe II and is communicated with the cooling water return pipe I through a cooling water return pipe II; the water machine unit is also communicated with the cooling water supply pipe II through a cooling water supply pipe III, and is also communicated with the cooling water return pipe I through a cooling water return pipe III; the air return channel is arranged at the top in the intelligent calculation center machine room; the cold air channel is formed below a floor in the intelligent calculation center machine room; an air return opening is formed in the side, facing the interior of the machine room, of the air return channel and provided with an air return grille. The system has the characteristic of simultaneously providing cold air and cold water for the intelligent computing center machine room.

Description

Technical Field

[0001] The utility model belongs to the technical field of air conditioning systems, and relates to a direct expansion air-cooled / water-cooled composite air conditioning system for liquid cooling of an intelligent computing center. Background Art

[0002] As technology advances, especially in high-performance computing and electronic devices, the power density of components continues to increase, resulting in higher heat loads. This growing demand has driven the development of more efficient cooling technologies, especially in key areas such as servers, supercomputers, electric vehicles, and 5G communication equipment.

[0003] Traditional air cooling technology relies on ambient air as a heat dissipation medium, and its efficiency is limited by the ambient temperature of the surrounding environment, and it is not sufficient to handle high heat output in compact or enclosed spaces. Although liquid cooling technology can provide higher heat dissipation efficiency, it has high initial investment and maintenance costs and requires complex piping and pumping systems.

[0004] Traditional mechanical refrigeration systems use high-energy-consuming components, such as compressors and condensers. In addition, they cannot fully utilize natural cooling sources during year-round operation. Therefore, pure compression refrigeration systems consume a lot of electricity for the intelligent computing center and cannot achieve high efficiency and energy saving. In addition, traditional mechanical refrigeration systems also have problems such as high maintenance costs and high noise, which brings certain difficulties to the management and maintenance of the intelligent computing center. Utility Model Content

[0005] The purpose of the utility model is to provide a direct expansion air-cooled / water-cooled composite air-conditioning system for liquid cooling of the intelligent computing center, which has the characteristics of providing cold air and cold water to the computer room of the intelligent computing center at the same time, while ensuring the low temperature requirements in the computer room while minimizing the number of equipment.

[0006] The technical solution adopted by the utility model is a direct expansion air-cooled / water-cooled composite air-conditioning system for liquid cooling of an intelligent computing center, including a fan unit, a water unit and a heat exchange module; the heat exchange module is connected to the water unit through a cooling water supply pipe Ⅰ and a cooling water return pipe Ⅰ; the fan unit is connected to the cooling water supply pipe Ⅰ through a cooling water supply pipe Ⅱ, and the fan unit is connected to the cooling water return pipe Ⅰ through a cooling water return pipe Ⅱ; the water unit is also connected to the cooling water supply pipe Ⅱ through a cooling water supply pipe Ⅲ, and the water unit is also connected to the cooling water return pipe Ⅰ through a cooling water return pipe Ⅲ; the heat exchange module is connected to the cooling water supply pipe Ⅱ through a cooling water supply pipe Ⅲ, and the cooling water return pipe Ⅰ through a cooling water return pipe Ⅲ The water pipe network is connected to the liquid inlet of several immersion liquid cooling cabinets in the computer room of the intelligent computing center, and the heat exchange module is connected to the liquid outlet of several immersion liquid cooling cabinets in the computer room of the intelligent computing center through the drainage pipe network; it also includes a return air duct arranged at the top of the computer room of the intelligent computing center and a cold air duct formed under the floor of the computer room of the intelligent computing center; a return air outlet is provided on the side of the return air duct facing the computer room, and a return air grille is provided at the return air outlet; several cold air outlets are provided on the floor of the computer room of the intelligent computing center; the return air duct is connected to the fan unit through the exhaust duct; the cold air duct is connected to the fan unit through the supply air duct.

[0007] The utility model is also characterized in that:

[0008] The fan unit includes a first unit housing, in which an upper air duct and a lower air duct which are parallel to each other and arranged up and down are arranged;

[0009] An air inlet of the fan unit is arranged on the top wall of the first unit shell corresponding to the upper air duct, and an air outlet of the fan unit is arranged on the side wall of the first unit shell corresponding to the upper air duct; a first end of the exhaust duct is connected to the air inlet of the fan unit, a second end of the exhaust duct is connected to the air outlet of the return air duct, and a fan V is arranged at the air outlet of the return air duct; a first end of the air supply duct is connected to the air outlet of the fan unit, and a second end of the air supply duct is connected to the air inlet of the cold air duct;

[0010] In the upper air duct between the air inlet and the air outlet of the fan unit, a surface cooler I, a wet film humidification and cooling section, an evaporator, a fan I and a water baffle I are arranged in sequence according to the air flow direction; the water inlet of the surface cooler I is connected to the cooling water supply pipe I through the cooling water supply pipe II, and the water outlet of the surface cooler I is connected to the cooling water return pipe I through the cooling water return pipe II; an expansion valve is also arranged in the upper air duct;

[0011] A fresh air inlet and an exhaust port I are respectively arranged on two adjacent side walls of the first unit housing corresponding to the lower air duct, and a compressor, a condenser and a fan II are arranged in sequence in the lower channel between the fresh air inlet and the exhaust port I according to the air flow direction;

[0012] The evaporator, expansion valve, condenser and compressor are connected in sequence through pipelines to form a closed loop.

[0013] The wet film humidification and cooling section comprises a water distribution unit I, a wet film and a water tank I which are arranged in sequence from top to bottom; the water distribution unit I is connected with the water tank I through a first pipe, and a water pump I is arranged on the first pipe.

[0014] The water machine unit includes a second machine unit shell, a water machine unit fresh air inlet is arranged on the side wall of the second machine unit shell, and an exhaust port II is arranged on the top wall of the second machine unit shell; a direct evaporative cooling chiller II is arranged below the exhaust port II, and a partition, a direct evaporative cooling chiller I and a surface cooler II are arranged on one side of the direct evaporative cooling chiller II in sequence from near to far; an air inlet of the direct evaporative cooling chiller II is arranged on the partition;

[0015] The direct evaporative cooling chiller II includes a fan IV, a water baffle III, a water distribution unit III, a filler II and a water tank II arranged in sequence from top to bottom;

[0016] The direct evaporative cooling chiller I includes a third unit shell, a plurality of vents are arranged on the top wall of the third unit shell, each vent is provided with an arc-shaped guide plate, and an air inlet of the direct evaporative cooling chiller I is also arranged on the side wall of the third unit shell; a water baffle II, a water distribution unit II, a filler I and a water tank III are arranged in the third unit shell from top to bottom;

[0017] The water distribution unit II is connected with the cooling water return pipe I;

[0018] The water distribution unit III is connected to the water tank III through a second pipeline, and a water pump III is also provided on the second pipeline;

[0019] The first end of the cooling water supply pipe III is connected to the cooling water supply pipe II, and the second end of the cooling water supply pipe III is connected to the water inlet of the surface cooler II;

[0020] The first end of the cooling water return pipe III is communicated with the cooling water return pipe I, and the second end of the cooling water return pipe III is connected to the water outlet of the surface cooler II.

[0021] The water supply network includes a water supply pipeline of the liquid cooling unit and a plurality of water supply branches. The first end of the water supply pipeline of the liquid cooling unit is connected to the heat exchange module, and the second end of the water supply pipeline of the liquid cooling unit is connected to the liquid inlets of a plurality of immersion liquid cooling cabinets through a plurality of water supply branches. A check valve is provided on each water supply branch.

[0022] The drainage network includes a liquid cooling unit drainage pipe and several drainage branches. The first end of the liquid cooling unit drainage pipe is connected to the heat exchange module, and the second end of the liquid cooling unit drainage pipe is connected to the liquid outlets of several immersion liquid cooling cabinets through several drainage branches.

[0023] A fluorine pump is installed on the water supply pipeline of the liquid cooling unit.

[0024] A water pump II is provided on the compressor water supply pipeline.

[0025] A water pump IV is also provided on the cooling water supply pipe I.

[0026] The beneficial effects of the utility model are:

[0027] (1) The plate-and-tube evaporative condenser used in the air-conditioning system of the utility model has efficient heat transfer performance and structural advantages. This type of evaporative condenser has a high heat transfer coefficient and can achieve effective heat exchange under low temperature difference conditions, thereby significantly reducing energy consumption. Its structural design is compact and small in size, which effectively reduces heat loss, while reducing the demand for insulation materials and further optimizing overall energy efficiency. The plate-and-tube evaporative condenser is designed to be non-scaling and clogging and has a self-cleaning function, which reduces the need for regular cleaning and maintenance and reduces operating costs. The air-conditioning system has the characteristic of providing both cold air and cold water to the computer room of the intelligent computing center, minimizing the number of equipment while ensuring the low temperature requirements in the computer room.

[0028] (2) A surface cooler is provided at the air inlet of the direct evaporative cooling chiller I in the air conditioning system of the utility model. The air is first pre-cooled by the surface cooler and then enters the direct evaporative cooling chiller I. This design makes full use of cooling water to cool the fresh air, achieving energy saving and high efficiency. Compared with traditional refrigeration devices, the refrigeration device of the utility model can reduce energy consumption and further reduce the temperature of the cold water produced, which helps to reduce operating costs;

[0029] (3) The fan unit in the air conditioning system of the utility model can provide cold air and cold water for the intelligent computing center at the same time. When the ambient temperature is high, the compressor can be turned on to reduce the return air of the intelligent computing center to the required temperature; when the outdoor ambient temperature is low, the compressor can be turned off, and the cooling water in the water tank II and the filler II of the direct evaporative cooling chiller II are used for cooling. The whole unit can be operated under low energy consumption, achieving efficient cooling while reducing energy consumption;

[0030] (4) The utility model air conditioning system adopts an immersion liquid cooling cabinet on the intelligent computing center side, so that the chip is in direct contact with the refrigerant, which greatly improves the heat transfer efficiency and transfers the heat to the heat exchange module through the fluorine pump. The refrigerant also effectively protects the various chips inside the cabinet, which is also more conducive to the operation and maintenance of the intelligent computing center;

[0031] (5) The heat exchange module of the air conditioning system of the utility model is a plate-and-tube evaporative condenser. This heat exchanger utilizes the difference in boiling points between the two different refrigerants inside and outside the tube to perform phase change heat transfer in a countercurrent manner, thereby improving the heat exchange efficiency. Compared with traditional refrigeration devices, the refrigeration device of the utility model has higher heat exchange efficiency and lower energy consumption, which helps to reduce operating costs and improve the energy efficiency ratio of the equipment;

[0032] (6) The intelligent computing center computer room of the utility model air conditioning system adopts the lower floor to supply air and the upper roof grille to return air, which effectively replaces the indoor air. Due to the temperature difference, the indoor air refrigeration cycle can be spontaneously replaced under the action of density difference and temperature difference.

[0033] (7) The fresh air inlet of the air conditioning system of the utility model is on the same side of the unit. The fresh air from the air inlet on one side enters the compressor side to take away the heat of the condenser, and the fresh air from the fresh air inlet of the water machine unit on the other side enters the water machine side to produce cold water. The fresh air on both sides does not mix with each other, which greatly enhances the heat dissipation efficiency of the condenser and the efficiency of producing cold water on the water machine side. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the structure of a direct expansion air-cooled / water-cooled composite air-conditioning system for liquid cooling of an intelligent computing center of the utility model;

[0035] In the figure, 1. water retaining plate Ⅰ, 2. fan Ⅰ, 3. evaporator, 4. wet film, 5. water distribution unit Ⅰ, 6. water pump Ⅰ, 7. surface cooler Ⅰ, 8. fresh air outlet, 9. compressor, 10. condenser, 11. fan Ⅱ, 12. exhaust outlet Ⅰ, 13. fresh air inlet of water machine unit, 14. surface cooler Ⅱ, 15. water pump Ⅱ, 16. water retaining plate Ⅱ, 17. guide plate, 18. water distribution unit Ⅱ, 19. packing Ⅰ, 20. Water pump Ⅲ, 21. Water pump Ⅳ, 22. Filler Ⅱ, 23. Water distribution unit Ⅲ, 24. Water baffle Ⅲ, 25. Fan Ⅳ, 26. Exhaust port Ⅱ, 27. Expansion valve, 28. Heat exchange module, 29. Fan Ⅴ, 30. Immersed liquid cooling cabinet, 31. Fluorine pump, 32. Check valve, 33. Return air grille, 34. Cold air channel, 35. Liquid cooling unit water supply pipeline, 36. Liquid cooling unit drainage pipeline , 37. Air supply duct, 38. Exhaust duct, 39. Cooling water supply pipe Ⅰ, 40. Cooling water return pipe Ⅰ, 41. Compressor drainage pipe, 42. Compressor water supply pipe, 43. Fan unit, 44. Water unit, 45. Intelligent computing center room, 46. Direct evaporative cooling chiller Ⅰ, 47. Direct evaporative cooling chiller Ⅱ, 48. Water tank Ⅲ, 49. Water supply branch pipe, 50. Cooling water supply Water pipe II, 51. Cooling water return pipe II, 52. Return air channel, 53. Drain branch pipe, 54. Cold air outlet, 55. Air inlet of fan unit, 56. Air outlet of fan unit, 57. Cooling water supply pipe III, 58. Cooling water return pipe III, 59. Water tank I, 60. Partition, 61. Water tank II, 62. Air inlet of direct evaporative cooling chiller II, 63. Air inlet of direct evaporative cooling chiller I. DETAILED DESCRIPTION

[0036] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.

[0037] The utility model provides a direct expansion air-cooling / water-cooling composite air conditioning system for liquid cooling of an intelligent computing center, such as Figure 1 As shown, it includes a fan unit 43, a water machine unit 44 and a heat exchange module 28; through the fan unit 43 and the water machine unit 44, cold water and cold air can be produced for the computer room of the intelligent computing center at the same time.

[0038] The heat exchange module 28 is connected to the water machine unit 44 through the cooling water supply pipe Ⅰ39 and the cooling water return pipe Ⅰ40; the fan unit 43 is connected to the cooling water supply pipe Ⅰ39 through the cooling water supply pipe Ⅱ50, and the fan unit 43 is connected to the cooling water return pipe Ⅰ40 through the cooling water return pipe Ⅱ51; the water machine unit 44 is also connected to the cooling water supply pipe Ⅱ50 through the cooling water supply pipe Ⅲ57, and the water machine unit 44 is also connected to the cooling water return pipe Ⅰ40 through the cooling water return pipe Ⅲ58; the heat exchange module 28 is connected to the liquid inlet of several immersion liquid cooling cabinets 30 in the intelligent computing center computer room 45 through the water supply network The heat exchange module 28 is connected to the liquid outlet of several immersion liquid cooling cabinets 30 in the intelligent computing center computer room 45 through the drainage network; it also includes a return air duct 52 arranged at the top of the intelligent computing center computer room 45, and a cold air duct 34 formed under the floor of the intelligent computing center computer room 45; the return air duct 52 is provided with a return air outlet on the side facing the computer room, and a return air grille 33 is provided at the return air outlet; several cold air outlets 54 are provided on the floor of the intelligent computing center computer room 45; the return air duct 52 is connected to the fan unit 43 through the exhaust duct 38; the cold air duct 34 is connected to the fan unit 43 through the supply air duct 37.

[0039] The fan unit 43 includes a first unit housing, in which an upper air duct and a lower air duct are arranged parallel to each other and arranged up and down;

[0040] A fan unit air inlet 55 is provided on the top wall of the first unit housing corresponding to the upper air duct, and a fan unit air outlet 56 is provided on the side wall of the first unit housing corresponding to the upper air duct; a first end of the exhaust duct 38 is connected to the fan unit air inlet 55, and a second end of the exhaust duct 38 is connected to the air outlet of the return air duct 52, and a fan V29 is provided at the air outlet of the return air duct 52; a first end of the air supply duct 37 is connected to the fan unit air outlet 56, and a second end of the air supply duct 37 is connected to the air inlet of the cold air duct 34;

[0041] In the upper air duct between the air inlet 55 and the air outlet 56 of the fan unit, a surface cooler Ⅰ7, a wet film humidification and cooling section, an evaporator 3, a fan Ⅰ2 and a water baffle Ⅰ1 are arranged in sequence according to the air flow direction; the water inlet of the surface cooler Ⅰ7 is connected to the cooling water supply pipe Ⅰ39 through the cooling water supply pipe Ⅱ50, and the water outlet of the surface cooler Ⅰ7 is connected to the cooling water return pipe Ⅰ40 through the cooling water return pipe Ⅱ51; an expansion valve 27 is also arranged in the upper air duct;

[0042] A fresh air inlet 8 and an exhaust port Ⅰ12 are respectively arranged on two adjacent side walls of the first unit shell corresponding to the lower air duct; a compressor 9, a condenser 10 and a fan Ⅱ11 are arranged in sequence in the lower channel between the fresh air inlet 8 and the exhaust port Ⅰ12 according to the air flow direction; the compressor 9 is connected to the condenser 10 through a compressor drain pipe 41; the compressor 9 is connected to the expansion valve 27 through a compressor water supply pipe 42.

[0043] The evaporator 3, the expansion valve 27, the condenser 10 and the compressor 9 are connected in sequence through pipelines to form a closed loop.

[0044] The wet film humidification and cooling section includes a water distribution unit Ⅰ5, a wet film 4 and a water tank Ⅰ59 arranged in sequence from top to bottom; the water distribution unit Ⅰ5 is connected to the water tank Ⅰ59 through a first pipe, and a water pump Ⅰ6 is arranged on the first pipe. The water distribution unit Ⅰ5 includes a water distribution pipe Ⅰ and a plurality of nozzles arranged on the water distribution pipe Ⅰ, and the water distribution pipe Ⅰ is connected to the first pipe.

[0045] A compression refrigeration unit is added to the fan unit part, and the evaporator 3 part is placed in the return air processing section 45 of the intelligent computing center computer room, and the condenser 10 is placed in the fresh air section.

[0046] The water machine unit 44 includes a second machine housing, a water machine unit fresh air inlet 13 is arranged on the side wall of the second machine housing, and an exhaust port II 26 is arranged on the top wall of the second machine housing; a direct evaporative cooling chiller II 47 is arranged below the exhaust port II 26, and a partition 60, a direct evaporative cooling chiller I 46 and a surface cooler II 14 are arranged on one side of the direct evaporative cooling chiller II 47 in sequence from near to far; an air inlet 62 of the direct evaporative cooling chiller II is arranged on the partition 60;

[0047] The direct evaporative cooling chiller II 47 includes a fan IV 25, a water baffle III 24, a water distribution unit III 23, a filler II 22 and a water tank II 61 which are arranged in sequence from top to bottom; the air inlet 62 of the direct evaporative cooling chiller II is located on the partition 60 corresponding to the filler II 22 and the water tank II 61, and the bottom of the filler II 22 can be a beveled surface to facilitate the entry of gas.

[0048] The direct evaporative cooling chiller I 46 includes a third unit shell, a plurality of vents are arranged on the top wall of the third unit shell, each vent is provided with an arc-shaped guide plate 17, and a direct evaporative cooling chiller I air inlet 63 is also arranged on the side wall of the third unit shell; a water baffle II 16, a water distribution unit II 18, a filler I 19 and a water tank III 48 are arranged in sequence from top to bottom in the third unit shell;

[0049] The water distribution unit II 18 is connected to the cooling water return pipe I 40; the water distribution unit II 18 includes a water distribution pipe II and a plurality of nozzles arranged on the water distribution pipe II, and the water distribution pipe II is connected to the cooling water return pipe I 40;

[0050] The water distribution unit III23 is connected to the water tank III48 through a second pipe, and a water pump III20 is also arranged on the second pipe; the water distribution unit III23 includes a water distribution pipe III and a plurality of nozzles arranged on the water distribution pipe III, and the water distribution pipe III is connected to the second pipe.

[0051] The air inlet 63 of the direct evaporative cooling chiller I is located on the side wall of the third unit shell corresponding to between the filler I19 and the water tank III48. The bottom of the filler I19 can be a beveled surface to facilitate the entry of gas.

[0052] The first end of the cooling water supply pipe III 57 is connected to the cooling water supply pipe II 50, and the second end of the cooling water supply pipe III 57 is connected to the water inlet of the surface cooler II 14;

[0053] The first end of the cooling water return pipe III58 is communicated with the cooling water return pipe I40 , and the second end of the cooling water return pipe III58 is connected to the water outlet of the surface cooler II14 .

[0054] The water supply network includes a liquid cooling unit water supply pipeline 35 and a plurality of water supply branches 49. The first end of the liquid cooling unit water supply pipeline 35 is connected to the heat exchange module 28, and the second end of the liquid cooling unit water supply pipeline 35 is connected to the liquid inlets of a plurality of immersion liquid cooling cabinets 30 through a plurality of water supply branches 49. A check valve 32 is provided on each water supply branch 49.

[0055] The drainage network includes a liquid cooling unit drainage pipe 36 and a plurality of drainage branches 53. The first end of the liquid cooling unit drainage pipe 36 is connected to the heat exchange module 28. The second end of the liquid cooling unit drainage pipe 36 is connected one by one to the liquid outlets of a plurality of immersion liquid cooling cabinets 30 through a plurality of drainage branches 53.

[0056] The heat exchange module 28 is a plate-and-tube type evaporative condenser;

[0057] A fluorine pump 31 is provided on the water supply pipe 35 of the liquid cooling unit.

[0058] A water pump II 15 is provided on the compressor water supply pipe 40 .

[0059] A water pump IV21 is also provided on the cooling water supply pipe I39.

[0060] The return air of the intelligent computing center computer room adopts the form of floor air supply and top-floor air return.

[0061] In the direct expansion air-cooled / water-cooled composite air-conditioning system for liquid cooling of the intelligent computing center of the utility model, the evaporator and the compression refrigeration unit are arranged separately, so that the cooling effect is more significant. The cabinets in the computer room 45 of the intelligent computing center adopt immersion liquid cooling cabinets, which can provide an effective solution to the high energy consumption of the intelligent computing center. At the same time, this system also provides cold air and cold water to the intelligent computing center at the same time. This design makes the heat dissipation more uniform, effectively reduces the energy consumption of the intelligent computing center, and improves the heat exchange efficiency. The intelligent computing center in the air-conditioning system uses floor air supply and roof grille return air to effectively replace the indoor air of the intelligent computing center. This not only improves the cooling effect, but also reduces energy consumption, so that the performance of the entire system is optimized.

[0062] The working principle of the direct expansion air-cooling / water-cooling composite air-conditioning system for liquid cooling of the intelligent computing center of the utility model is as follows:

[0063] The heat dissipation system of the utility model is divided into two modes according to the outdoor temperature:

[0064] (1) When the outdoor ambient temperature is low

[0065] exist Figure 1 In the fan unit 43 shown, when the compressor 9 stops running, the surface cooler Ⅰ7 and the wet film 4 can be used to cool the return air of the intelligent computing center room 45. When the pressure head of the heat exchange module 28 is insufficient, the fluorine pump 31 is turned on to provide power for the heat exchange module 28. Under the action of the fluorine pump 31, the refrigerant gas coming out of the heat exchange module 28 first enters the immersion liquid cooling cabinet 30 through the liquid cooling unit water supply pipe 35 to dissipate heat for the chip, and then flows back to the heat exchange module 28 through the liquid cooling unit drainage pipe 36 to complete the heat exchange, and the cycle is repeated continuously.

[0066] On the side of the water machine unit 44, the outside air passes through the fresh air inlet 13 of the water machine unit and is pre-cooled by the surface cooler II 14, and then enters the direct evaporative cooling chiller I 46 to produce cold water through the direct evaporative cooling principle. The produced cold water is pressurized and transported to the water distribution unit III 23 by the water pump III 20. The outside air leaves the direct evaporative cooling chiller I 46 and then enters the direct evaporative cooling chiller II 47 to produce cold water again and transports the cold water to the surface cooler I 7 and the heat exchange module 28 through the water pump IV 21. The outside air is finally discharged to the outside from the exhaust port II 26.

[0067] The airflow direction in the intelligent computing center room 45 is as follows Figure 1 In the intelligent computing center room 45, the airflow enters the intelligent computing center room 45 through the cold air channel 34 to exchange heat with the outer casing of the immersion liquid cooling cabinet 30 to take away the heat, and then transports it back to the fan unit 43 through the return air grille 33 and the fan V29, and repeats the cycle continuously.

[0068] (2) When the outdoor ambient temperature is high

[0069] exist Figure 1 In the fan unit 43 shown, when the compressor 9 is turned on, the surface cooler Ⅰ7, the wet film 4 and the evaporator 3 can be used to cool the return air of the intelligent computing center room 45. The fresh air entering the condenser 10 side through the fresh air inlet 8 flows through the condenser 10 to take away the heat of the condenser 10 and the hot air is discharged to the outside by the fan Ⅱ11 and the exhaust outlet Ⅰ12.

[0070] At the same time, when the pressure head of the refrigeration device is insufficient, the fluorine pump 31 is turned on to provide power for the device. Under the action of the fluorine pump 31, the refrigerant gas coming out of the heat exchange module 28 first enters the immersion liquid cooling cabinet 30 through the liquid cooling unit water supply pipe 35 to dissipate heat for the chip, and then flows back to the heat exchange module 28 through the liquid cooling unit drainage pipe 36 to complete the heat exchange, and the cycle is repeated continuously.

[0071] At the same time, the working process of the water machine unit 44 and the intelligent computing center room 45 is the same as when the outdoor ambient temperature is low, and cooling continues.

[0072] The utility model discloses a direct expansion air-cooling / water-cooling composite air-conditioning system for liquid cooling of the intelligent computing center, which minimizes energy consumption while ensuring the low temperature requirement in the computer room.

[0073] The direct expansion air-cooled / water-cooled composite air conditioning system for liquid cooling of the intelligent computing center of this utility model adopts a combination of liquid cooling and air cooling, aiming to utilize the high efficiency of liquid cooling and the economy of air cooling. This hybrid system can dynamically adjust the cooling strategy according to actual needs, for example, using air cooling under basic operating conditions and switching to liquid cooling under high load or high temperature conditions, thereby achieving the best balance between cost and efficiency.

[0074] Example 1

[0075] Direct expansion air-cooling / water-cooling composite air conditioning system for liquid cooling of intelligent computing center, such as Figure 1 As shown, it includes a fan unit 43, a water machine unit 44 and a heat exchange module 28; through the fan unit 43 and the water machine unit 44, cold water and cold air can be produced for the computer room of the intelligent computing center at the same time.

[0076] The heat exchange module 28 is connected to the water machine unit 44 through the cooling water supply pipe Ⅰ39 and the cooling water return pipe Ⅰ40; the fan unit 43 is connected to the cooling water supply pipe Ⅰ39 through the cooling water supply pipe Ⅱ50, and the fan unit 43 is connected to the cooling water return pipe Ⅰ40 through the cooling water return pipe Ⅱ51; the water machine unit 44 is also connected to the cooling water supply pipe Ⅱ50 through the cooling water supply pipe Ⅲ57, and the water machine unit 44 is also connected to the cooling water return pipe Ⅰ40 through the cooling water return pipe Ⅲ58; the heat exchange module 28 is connected to the liquid inlet of several immersion liquid cooling cabinets 30 in the intelligent computing center computer room 45 through the water supply network The heat exchange module 28 is connected to the liquid outlet of several immersion liquid cooling cabinets 30 in the intelligent computing center computer room 45 through the drainage network; it also includes a return air duct 52 arranged at the top of the intelligent computing center computer room 45, and a cold air duct 34 formed under the floor of the intelligent computing center computer room 45; the return air duct 52 is provided with a return air outlet on the side facing the computer room, and a return air grille 33 is provided at the return air outlet; several cold air outlets 54 are provided on the floor of the intelligent computing center computer room 45; the return air duct 52 is connected to the fan unit 43 through the exhaust duct 38; the cold air duct 34 is connected to the fan unit 43 through the supply air duct 37.

[0077] The fan unit 43 includes a first unit housing, in which an upper air duct and a lower air duct are arranged parallel to each other and arranged up and down;

[0078] A fan unit air inlet 55 is provided on the top wall of the first unit housing corresponding to the upper air duct, and a fan unit air outlet 56 is provided on the side wall of the first unit housing corresponding to the upper air duct; a first end of the exhaust duct 38 is connected to the fan unit air inlet 55, and a second end of the exhaust duct 38 is connected to the air outlet of the return air duct 52, and a fan V29 is provided at the air outlet of the return air duct 52; a first end of the air supply duct 37 is connected to the fan unit air outlet 56, and a second end of the air supply duct 37 is connected to the air inlet of the cold air duct 34;

[0079] In the upper air duct between the air inlet 55 and the air outlet 56 of the fan unit, a surface cooler Ⅰ7, a wet film humidification and cooling section, an evaporator 3, a fan Ⅰ2 and a water baffle Ⅰ1 are arranged in sequence according to the air flow direction; the water inlet of the surface cooler Ⅰ7 is connected to the cooling water supply pipe Ⅰ39 through the cooling water supply pipe Ⅱ50, and the water outlet of the surface cooler Ⅰ7 is connected to the cooling water return pipe Ⅰ40 through the cooling water return pipe Ⅱ51; an expansion valve 27 is also arranged in the upper air duct;

[0080] A fresh air inlet 8 and an exhaust port Ⅰ12 are respectively arranged on two adjacent side walls of the first unit shell corresponding to the lower air duct; a compressor 9, a condenser 10 and a fan Ⅱ11 are arranged in sequence in the lower channel between the fresh air inlet 8 and the exhaust port Ⅰ12 according to the air flow direction; the compressor 9 is connected to the condenser 10 through a compressor drain pipe 41; the compressor 9 is connected to the expansion valve 27 through a compressor water supply pipe 42.

[0081] The evaporator 3, the expansion valve 27, the condenser 10 and the compressor 9 are connected in sequence through pipelines to form a closed loop.

[0082] The wet film humidification and cooling section includes a water distribution unit Ⅰ5, a wet film 4 and a water tank Ⅰ59 arranged in sequence from top to bottom; the water distribution unit Ⅰ5 is connected to the water tank Ⅰ59 through a first pipeline, and a water pump Ⅰ6 is arranged on the first pipeline.

[0083] Example 2

[0084] Direct expansion air-cooling / water-cooling composite air conditioning system for liquid cooling of intelligent computing center, such as Figure 1 As shown, it includes a fan unit 43, a water machine unit 44 and a heat exchange module 28; through the fan unit 43 and the water machine unit 44, cold water and cold air can be produced for the computer room of the intelligent computing center at the same time.

[0085] The heat exchange module 28 is connected to the water machine unit 44 through the cooling water supply pipe Ⅰ39 and the cooling water return pipe Ⅰ40; the fan unit 43 is connected to the cooling water supply pipe Ⅰ39 through the cooling water supply pipe Ⅱ50, and the fan unit 43 is connected to the cooling water return pipe Ⅰ40 through the cooling water return pipe Ⅱ51; the water machine unit 44 is also connected to the cooling water supply pipe Ⅱ50 through the cooling water supply pipe Ⅲ57, and the water machine unit 44 is also connected to the cooling water return pipe Ⅰ40 through the cooling water return pipe Ⅲ58; the heat exchange module 28 is connected to the liquid inlet of several immersion liquid cooling cabinets 30 in the intelligent computing center computer room 45 through the water supply network The heat exchange module 28 is connected to the liquid outlet of several immersion liquid cooling cabinets 30 in the intelligent computing center computer room 45 through the drainage network; it also includes a return air duct 52 arranged at the top of the intelligent computing center computer room 45, and a cold air duct 34 formed under the floor of the intelligent computing center computer room 45; the return air duct 52 is provided with a return air outlet on the side facing the computer room, and a return air grille 33 is provided at the return air outlet; several cold air outlets 54 are provided on the floor of the intelligent computing center computer room 45; the return air duct 52 is connected to the fan unit 43 through the exhaust duct 38; the cold air duct 34 is connected to the fan unit 43 through the supply air duct 37.

[0086] The fan unit 43 includes a first unit housing, in which an upper air duct and a lower air duct are arranged parallel to each other and arranged up and down;

[0087] A fan unit air inlet 55 is provided on the top wall of the first unit housing corresponding to the upper air duct, and a fan unit air outlet 56 is provided on the side wall of the first unit housing corresponding to the upper air duct; a first end of the exhaust duct 38 is connected to the fan unit air inlet 55, and a second end of the exhaust duct 38 is connected to the air outlet of the return air duct 52, and a fan V29 is provided at the air outlet of the return air duct 52; a first end of the air supply duct 37 is connected to the fan unit air outlet 56, and a second end of the air supply duct 37 is connected to the air inlet of the cold air duct 34;

[0088] In the upper air duct between the air inlet 55 and the air outlet 56 of the fan unit, a surface cooler Ⅰ7, a wet film humidification and cooling section, an evaporator 3, a fan Ⅰ2 and a water baffle Ⅰ1 are arranged in sequence according to the air flow direction; the water inlet of the surface cooler Ⅰ7 is connected to the cooling water supply pipe Ⅰ39 through the cooling water supply pipe Ⅱ50, and the water outlet of the surface cooler Ⅰ7 is connected to the cooling water return pipe Ⅰ40 through the cooling water return pipe Ⅱ51; an expansion valve 27 is also arranged in the upper air duct;

[0089] A fresh air inlet 8 and an exhaust port Ⅰ12 are respectively arranged on two adjacent side walls of the first unit shell corresponding to the lower air duct; a compressor 9, a condenser 10 and a fan Ⅱ11 are arranged in sequence in the lower channel between the fresh air inlet 8 and the exhaust port Ⅰ12 according to the air flow direction; the compressor 9 is connected to the condenser 10 through a compressor drain pipe 41; the compressor 9 is connected to the expansion valve 27 through a compressor water supply pipe 42.

[0090] Example 3

[0091] Direct expansion air-cooling / water-cooling composite air conditioning system for liquid cooling of intelligent computing center, such as Figure 1 As shown, it includes a fan unit 43, a water machine unit 44 and a heat exchange module 28; through the fan unit 43 and the water machine unit 44, cold water and cold air can be produced for the computer room of the intelligent computing center at the same time.

[0092] The heat exchange module 28 is connected to the water machine unit 44 through the cooling water supply pipe Ⅰ39 and the cooling water return pipe Ⅰ40; the fan unit 43 is connected to the cooling water supply pipe Ⅰ39 through the cooling water supply pipe Ⅱ50, and the fan unit 43 is connected to the cooling water return pipe Ⅰ40 through the cooling water return pipe Ⅱ51; the water machine unit 44 is also connected to the cooling water supply pipe Ⅱ50 through the cooling water supply pipe Ⅲ57, and the water machine unit 44 is also connected to the cooling water return pipe Ⅰ40 through the cooling water return pipe Ⅲ58; the heat exchange module 28 is connected to the liquid inlet of several immersion liquid cooling cabinets 30 in the intelligent computing center computer room 45 through the water supply network The heat exchange module 28 is connected to the liquid outlet of several immersion liquid cooling cabinets 30 in the intelligent computing center computer room 45 through the drainage network; it also includes a return air duct 52 arranged at the top of the intelligent computing center computer room 45, and a cold air duct 34 formed under the floor of the intelligent computing center computer room 45; the return air duct 52 is provided with a return air outlet on the side facing the computer room, and a return air grille 33 is provided at the return air outlet; several cold air outlets 54 are provided on the floor of the intelligent computing center computer room 45; the return air duct 52 is connected to the fan unit 43 through the exhaust duct 38; the cold air duct 34 is connected to the fan unit 43 through the supply air duct 37.

[0093] The fan unit 43 includes a first unit housing, in which an upper air duct and a lower air duct are arranged parallel to each other and arranged up and down;

[0094] A fan unit air inlet 55 is provided on the top wall of the first unit housing corresponding to the upper air duct, and a fan unit air outlet 56 is provided on the side wall of the first unit housing corresponding to the upper air duct; a first end of the exhaust duct 38 is connected to the fan unit air inlet 55, and a second end of the exhaust duct 38 is connected to the air outlet of the return air duct 52, and a fan V29 is provided at the air outlet of the return air duct 52; a first end of the air supply duct 37 is connected to the fan unit air outlet 56, and a second end of the air supply duct 37 is connected to the air inlet of the cold air duct 34;

[0095] In the upper air duct between the air inlet 55 and the air outlet 56 of the fan unit, a surface cooler Ⅰ7, a wet film humidification and cooling section, an evaporator 3, a fan Ⅰ2 and a water baffle Ⅰ1 are arranged in sequence according to the air flow direction; the water inlet of the surface cooler Ⅰ7 is connected to the cooling water supply pipe Ⅰ39 through the cooling water supply pipe Ⅱ50, and the water outlet of the surface cooler Ⅰ7 is connected to the cooling water return pipe Ⅰ40 through the cooling water return pipe Ⅱ51; an expansion valve 27 is also arranged in the upper air duct;

[0096] A fresh air inlet 8 and an exhaust port Ⅰ12 are respectively arranged on two adjacent side walls of the first unit shell corresponding to the lower air duct; a compressor 9, a condenser 10 and a fan Ⅱ11 are arranged in sequence in the lower channel between the fresh air inlet 8 and the exhaust port Ⅰ12 according to the air flow direction; the compressor 9 is connected to the condenser 10 through a compressor drain pipe 41; the compressor 9 is connected to the expansion valve 27 through a compressor water supply pipe 42.

[0097] The evaporator 3, the expansion valve 27, the condenser 10 and the compressor 9 are connected in sequence through pipelines to form a closed loop.

[0098] The wet film humidification and cooling section includes a water distribution unit Ⅰ5, a wet film 4 and a water tank Ⅰ59 arranged in sequence from top to bottom; the water distribution unit Ⅰ5 is connected to the water tank Ⅰ59 through a first pipeline, and a water pump Ⅰ6 is arranged on the first pipeline.

Claims

1. A direct expansion air-cooling / water-cooling composite air conditioning system for liquid cooling of the intelligent computing center, characterized in that: The invention comprises a fan unit (43), a water unit (44) and a heat exchange module (28); the heat exchange module (28) is connected to the water unit (44) through a cooling water supply pipe I (39) and a cooling water return pipe I (40); the fan unit (43) is connected to the cooling water supply pipe I (39) through a cooling water supply pipe II (50), and the fan unit (43) is connected to the cooling water return pipe I (40) through a cooling water return pipe II (51); the water unit (44) is also connected to the cooling water supply pipe II (50) through a cooling water supply pipe III (57), and the water unit (44) is also connected to the cooling water return pipe I (40) through a cooling water return pipe III (58); the heat exchange module (28) is connected to a plurality of cooling water pipes in the intelligent computing center computer room (45) through a water supply network. The heat exchange module (28) is connected to the liquid inlet of several immersion liquid cooling cabinets (30), and the heat exchange module (28) is connected to the liquid outlet of several immersion liquid cooling cabinets (30) in the intelligent computing center computer room (45) through a drainage pipe network; it also includes a return air duct (52) arranged at the top of the intelligent computing center computer room (45), and a cold air duct (34) formed under the floor of the intelligent computing center computer room (45); the return air duct (52) is provided with a return air outlet on one side facing the computer room, and a return air grille (33) is provided at the return air outlet; a plurality of cold air outlets (54) are provided on the floor of the intelligent computing center computer room (45); the return air duct (52) is connected to the fan unit (43) through an exhaust duct (38); and the cold air duct (34) is connected to the fan unit (43) through an air supply duct (37).

2. The direct expansion air-cooling / water-cooling composite air conditioning system for liquid cooling of the intelligent computing center according to claim 1 is characterized in that: The fan unit (43) comprises a first unit housing, wherein an upper air duct and a lower air duct which are parallel to each other and arranged up and down are arranged in the first unit housing; A fan unit air inlet (55) is provided on the top wall of the first unit shell corresponding to the upper air duct, and a fan unit air outlet (56) is provided on the side wall of the first unit shell corresponding to the upper air duct; a first end of the exhaust duct (38) is connected to the fan unit air inlet (55), a second end of the exhaust duct (38) is connected to the air outlet of the return air duct (52), and a fan V (29) is provided at the air outlet of the return air duct (52); a first end of the supply air duct (37) is connected to the fan unit air outlet (56), and a second end of the supply air duct (37) is connected to the air inlet of the cold air duct (34); An upper air duct located between an air inlet (55) of the fan unit and an air outlet (56) of the fan unit is provided with a surface cooler I (7), a wet film humidification and cooling section, an evaporator (3), a fan I (2) and a water baffle I (1) in sequence according to the air flow direction; a water inlet of the surface cooler I (7) is connected to a cooling water supply pipe I (39) via a cooling water supply pipe II (50), and a water outlet of the surface cooler I (7) is connected to a cooling water return pipe I (40) via a cooling water return pipe II (51); an expansion valve (27) is also provided in the upper air duct; A fresh air inlet (8) and an exhaust port I (12) are respectively arranged on two adjacent side walls of the first unit housing corresponding to the lower air duct, and a compressor (9), a condenser (10) and a fan II (11) are arranged in sequence in the lower channel between the fresh air inlet (8) and the exhaust port I (12) according to the air flow direction; The evaporator (3), the expansion valve (27), the condenser (10) and the compressor (9) are connected in sequence via pipelines to form a closed loop.

3. The direct expansion air-cooling / water-cooling composite air conditioning system for liquid cooling of the intelligent computing center according to claim 2 is characterized in that: The wet film humidification and cooling section comprises a water distribution unit I (5), a wet film (4) and a water tank I (59) which are arranged in sequence from top to bottom; the water distribution unit I (5) is connected to the water tank I (59) through a first pipe, and a water pump I (6) is arranged on the first pipe.

4. The direct expansion air-cooling / water-cooling composite air conditioning system for liquid cooling of the intelligent computing center according to claim 2, characterized in that: The water machine unit (44) comprises a second machine unit shell, a water machine unit fresh air inlet (13) is arranged on the side wall of the second machine unit shell, and an exhaust port II (26) is arranged on the top wall of the second machine unit shell; a direct evaporative cooling chiller II (47) is arranged below the exhaust port II (26), and a partition (60), a direct evaporative cooling chiller I (46) and a surface cooler II (14) are arranged on one side of the direct evaporative cooling chiller II (47) in order from near to far; an air inlet (62) of the direct evaporative cooling chiller II is arranged on the partition (60); The direct evaporative cooling chiller II (47) includes a fan IV (25), a water retaining plate III (24), a water distribution unit III (23), a filler II (22) and a water tank II (61) which are arranged in order from top to bottom; The direct evaporative cooling chiller I (46) comprises a third unit shell, a plurality of vents are arranged on the top wall of the third unit shell, each vent is provided with an arc-shaped guide plate (17), and a direct evaporative cooling chiller I air inlet (63) is also arranged on the side wall of the third unit shell; a water baffle II (16), a water distribution unit II (18), a filler I (19) and a water tank III (48) are arranged in the third unit shell from top to bottom; the water distribution unit II (18) is connected to the cooling water return pipe I (40); The water distribution unit III (23) is connected to the water tank III (48) via a second pipe, and a water pump III (20) is also provided on the second pipe; The first end of the cooling water supply pipe III (57) is connected to the cooling water supply pipe II (50), and the second end of the cooling water supply pipe III (57) is connected to the water inlet of the surface cooler II (14); The first end of the cooling water return pipe III (58) is connected to the cooling water return pipe I (40), and the second end of the cooling water return pipe III (58) is connected to the water outlet of the surface cooler II (14).

5. The direct expansion air-cooling / water-cooling composite air conditioning system for liquid cooling of the intelligent computing center according to claim 2, characterized in that: The water supply network comprises a liquid cooling unit water supply pipeline (35) and a plurality of water supply branches (49); a first end of the liquid cooling unit water supply pipeline (35) is connected to the heat exchange module (28); a second end of the liquid cooling unit water supply pipeline (35) is connected to the liquid inlets of a plurality of immersion liquid cooling cabinets (30) through a plurality of water supply branches (49); and a check valve (32) is provided on each water supply branch (49); The drainage pipe network comprises a liquid cooling unit drainage pipe (36) and a plurality of drainage branches (53); a first end of the liquid cooling unit drainage pipe (36) is connected to the heat exchange module (28); and a second end of the liquid cooling unit drainage pipe (36) is connected one by one to liquid outlets of a plurality of immersion liquid cooling cabinets (30) through the plurality of drainage branches (53).

6. The direct expansion air-cooling / water-cooling composite air conditioning system for liquid cooling of the intelligent computing center according to claim 5, characterized in that: A fluorine pump (31) is provided on the water supply pipeline (35) of the liquid cooling unit.

7. The direct expansion air-cooling / water-cooling composite air conditioning system for liquid cooling of an intelligent computing center according to claim 4, characterized in that: The cooling water return pipe I (40) is provided with a water pump II (15).

8. The direct expansion air-cooling / water-cooling composite air conditioning system for liquid cooling of an intelligent computing center according to claim 4, characterized in that: The cooling water supply pipe I (39) is also provided with a water pump IV (21).

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