Cold air and cold water composite air conditioning unit and cold plate type liquid cooling combined system

Abstract

The utility model discloses a system combining a cold air and cold water compound type air conditioning unit and cold plate type liquid cooling. The system comprises an indoor tail end unit, an outdoor cold source end unit, a heat exchange unit and a water chilling unit. The indoor tail end unit comprises an air return channel arranged at a ceiling in the data center machine room, and the air return channel is provided with a plurality of machine room air return ports; a machine room air outlet is further formed in one end of the air return channel and communicates with the outdoor cold source end unit through a machine room air return pipeline. The machine room air inlet is formed in the wall of the data center machine room, and the machine room air inlet is communicated with the outdoor cold source end unit through a machine room air supply pipeline; the cold plate is arranged on a chip of a server in each cabinet; the heat exchange unit is connected with the outdoor cold source end unit and each cold plate; the water chilling unit is connected with the outdoor cold source end unit through a water chilling unit water supply pipe and a water chilling unit water return pipe. The system has the characteristics of low energy consumption and high energy efficiency ratio.

Description

Technical Field

[0001] The utility model belongs to the technical field of air conditioning systems, and in particular relates to a system combining a cold air and cold water composite air conditioning unit with a cold plate type liquid cooling. Background Art

[0002] With the development of technologies such as 5G, big data and artificial intelligence, the data center industry has been booming, but the energy density it brings is several times or even dozens of times that of traditional buildings. Faced with the high heat dissipation and year-round cooling needs of data centers, relying solely on traditional cooling systems such as air cooling, water cooling and direct expansion precision air conditioning not only cannot meet the cooling needs, but also brings high energy consumption problems. At present, as the industry's awareness of energy conservation becomes stronger and stronger, data center infrastructure has also begun to "reduce the burden". Most old and newly built data centers urgently need new technologies and new methods to solve the problem of high energy consumption in data centers, so as to achieve truly low PUE. Utility Model Content

[0003] The utility model aims to provide a system combining a cold air and cold water composite air conditioning unit with a cold plate type liquid cooling, the system having the characteristics of low energy consumption and high energy efficiency ratio.

[0004] The technical solution adopted by the utility model is a system combining a cold air and cold water composite air conditioning unit with a cold plate liquid cooling, including an indoor terminal unit, an outdoor cold source terminal unit, a heat exchange unit and a cold water unit;

[0005] The indoor terminal unit includes a return air duct arranged at the ceiling of the computer room in the data center, and a plurality of computer room return air outlets are arranged on the return air duct; a computer room exhaust outlet is also arranged at one end of the return air duct, and the computer room exhaust outlet is connected to the outdoor cold source terminal unit through the computer room return air duct; it also includes a computer room air inlet arranged on the wall of the computer room of the data center, and the computer room air inlet is connected to the outdoor cold source terminal unit through the computer room air supply duct; it also includes a cold plate arranged on the chip of the server in each cabinet;

[0006] The heat exchange unit is connected to the outdoor cold source end unit and each cold plate; the chiller is connected to the outdoor cold source end unit through a chiller water supply pipe and a chiller water return pipe.

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

[0008] The outdoor cold source terminal unit includes a unit housing, in which a first air duct and a second air duct which are independent of each other are arranged; a cold air preparation unit is arranged in the first air duct, and a cold water preparation unit is arranged in the second air duct; the first air duct is connected to the exhaust port of the computer room through the return air duct of the computer room, and the first air duct is connected to the air inlet of the computer room arranged on the wall of the computer room of the data center through the air supply duct of the computer room;

[0009] The cold air preparation unit is connected to the chiller through the water supply pipe of the chiller and the water return pipe of the chiller respectively; the cold air preparation unit and the cold water preparation unit are both connected to the heat exchange unit.

[0010] A return air outlet is provided on the top wall of the unit housing corresponding to the first air duct, and an air supply outlet is provided on the side wall of the unit housing corresponding to the first air duct; the machine room exhaust outlet is connected to the return air outlet through the machine room return air duct; the machine room air inlet is connected to the air supply outlet through the machine room supply air duct;

[0011] The cold air production unit includes a surface cooler A, a wet film cooling section, a surface cooler B, a fan and a filter A which are arranged in sequence in the first air duct according to the air flow direction; the filter A is arranged near the air supply port, and the surface cooler A is arranged near the return air port;

[0012] An exhaust port is provided on the top wall of the unit housing corresponding to the second air duct, and a fresh air grille port is provided on the side wall of the unit housing corresponding to the second air duct. The cold water preparation unit includes a filter B, a surface cooler C, a first baffle, a first filler direct evaporative cooling section, a second baffle and a second filler direct evaporative cooling section, which are arranged in sequence according to air circulation in the second air duct; the first filler direct evaporative cooling section is connected to the second filler direct evaporative cooling section through a sixth pipeline;

[0013] The second filler direct evaporative cooling section is located below the exhaust port, and the filter B is arranged near the fresh air grille air port; the first partition is provided with a first direct evaporative cooling section air inlet, and the second partition is provided with a second direct evaporative cooling section air inlet;

[0014] The heat exchange unit includes a heat exchanger, a water supply pipe and a return pipe; the water inlet of the surface cooler A is connected to the water supply pipe through the first pipe, and the water outlet of the surface cooler A is connected to the heat exchanger through the return pipe; the water inlet of the surface cooler C is connected to the first pipe through the second pipe, and the water outlet of the surface cooler C is connected to the return pipe through the third pipe; the second filler direct evaporative cooling section is connected to the heat exchanger through the water supply pipe; it also includes a coolant supply pipe and a coolant return pipe, one end of the coolant supply pipe is connected to the heat exchanger, and the other end of the coolant supply pipe is divided into a plurality of coolant supply branches, each of which is connected to the outlet of a cold plate; one end of the coolant return pipe is connected to the heat exchanger, and the other end of the coolant return pipe is divided into a plurality of coolant return branches, each of which is connected to the inlet of a cold plate;

[0015] The chiller includes a compressor, a condenser, an expansion valve and an evaporator which are connected in sequence through pipes to form a closed loop; the evaporator is connected to the water inlet of the surface cooler B through the water supply pipe of the chiller, and the evaporator is connected to the water outlet of the surface cooler B through the return pipe of the chiller.

[0016] The wet film cooling section includes a spray device A, a wet film and a first water tank which are arranged in sequence from top to bottom; the spray device A is connected to the first water tank through a fourth pipeline; and a circulating water pump A is arranged on the fourth pipeline.

[0017] The first filler direct evaporative cooling section includes a first filler direct evaporative cooling unit shell, the first partition is used as a side wall of the first filler direct evaporative cooling unit shell, a machine room return air outlet is arranged on the top wall of the first filler direct evaporative cooling unit shell, and a guide plate is arranged at the machine room return air outlet;

[0018] A water retaining plate A, a spray device B, a packing A and a water tank A are arranged on one side from top to bottom in the shell of the first packing direct evaporative cooling unit; the spray device B is connected with the water tank A through a fifth pipe, and a circulating water pump B is arranged on the fifth pipe; the return air outlet of the machine room is located on the side wall of the shell of the first packing direct evaporative cooling unit corresponding to the position between the packing A and the water tank A; the water tank A is connected with the second packing direct evaporative cooling section through a sixth pipe.

[0019] The second filler direct evaporative cooling section includes an axial flow fan, a water baffle B, a spray device C, a filler B and a water tank B arranged from top to bottom; the water tank A is connected to the spray device C through a sixth pipeline;

[0020] A circulating water pump C is provided on the sixth pipeline; the air inlet of the second direct evaporative cooling section is located at the second partition corresponding to the position between the filler B and the water tank B.

[0021] An exhaust fan is installed at the exhaust vent of the computer room.

[0022] The beneficial effects of the utility model are:

[0023] 1. In the utility model system, the outdoor cold source end unit adopts an integrated unit, which can be prefabricated, saving space, facilitating installation and shortening construction period; the cold source end of the liquid cooling primary side is a composite air conditioning unit that provides cold air and cold water functions; the liquid cooling secondary side end adopts cold plate liquid cooling, that is, a cold plate is attached to the electronic components with high heat flux density, and the heat of the chip is absorbed and taken away by the cooling liquid in the plate through heat conduction;

[0024] 2. In the system of the utility model, the cold water provided by the cold source end of the liquid cooling primary side exchanges heat with the coolant of the cold plate type liquid cooling. The liquid cooling can bear 70% of the heat of the server in the computer room, while the cold air provided by the cold source end serves as supplementary cooling for the computer room, bearing the remaining 30% of the load, while improving the comfort of the operation and maintenance personnel inside the computer room;

[0025] 3. In the utility model system, the outdoor cold source end unit uses the return air from the machine room to pass through the surface cooler A and the wet film cooling section for pre-cooling step by step, and then passes through the surface cooler B for further wet cooling, which can maximize the use of natural cold sources;

[0026] 4. In the utility model system, the fillers of the first direct evaporative cooling section and the second direct evaporative cooling section in the second air duct of the outdoor cold source end unit are in a ladder shape, which caters to the air flow direction, increases the contact area between the air and the filler, and makes the heat exchange between the air and the water more sufficient;

[0027] 5. In the system of the utility model, a guide plate is arranged at the exhaust port of the first direct evaporative cooling section in the second air duct to guide the fresh air to the first direct evaporative cooling section, thereby reducing the resistance of the airflow passing through the 90° turn.

[0028] 6. In the utility model system, the fillers used in the direct evaporative cooling section of the outdoor cold source end unit are all PVC fillers, which have the advantages of good hygroscopicity, low resistance, good flame retardancy, and long service life;

[0029] 7. In the utility model system, the cold water in the surface cooler B in the first air duct of the outdoor cold source end unit is provided by an external chiller, and the cold water temperature can be controlled according to actual needs;

[0030] 8. In the utility model system, the direct evaporative cooling section of the outdoor cold source end unit filler optimizes the water distribution method, adopts rotating water distribution and spiral nozzles to achieve uniform distribution of liquid on the heat source surface;

[0031] 9. In the utility model system, the outdoor cold source end unit unit is composed of two air ducts, the first air duct is used to produce cold air, and the second air duct is used to produce cold water, which not only utilizes the return air from the machine room but also avoids the mixing problem of airflow organization;

[0032] 10. In the utility model system, after the return air in the first air duct of the outdoor cold source end unit undergoes wet film heat exchange, the temperature is reduced and the moisture content is further increased, thus avoiding the static electricity problem caused by the excessive dryness of the air inside the machine room;

[0033] 11. The utility model system uses cold plate liquid cooling at the indoor terminal to cool the server chip. The cold plate is installed on the hot surface of the electronic components that need to be cooled. The heat generated by the components is transferred to the heat exchanger through the liquid cooling medium to avoid local hot spots to the greatest extent;

[0034] 12. The utility model system has multiple operation modes, which can adopt air cooling or liquid cooling. At the same time, the cold source end unit can flexibly control the start and stop operation according to the changes in the outdoor climate, so as to maximize the use of natural cold sources. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the system structure of the utility model combining a cold air and cold water composite air conditioning unit with a cold plate type liquid cooling;

[0036] Figure 2 The utility model is a structural schematic diagram of an outdoor cold source terminal unit and a cold water unit in a system combining a cold air and cold water composite air conditioning unit with a cold plate type liquid cooling.

[0037] In the figure, 1. air supply port, 2. filter A, 3. fan, 4. surface cooler B, 5. circulating water pump A, 6. first water tank, 7. spray device A, 8. wet film, 9. surface cooler A, 10. return air port, 11. fresh air grille port, 12. filter B, 13. surface cooler C, 14. circulating water pump B, 15. fifth pipeline, 16. packing A, 17. water baffle A, 18. spray device B, 19. guide plate, 20. circulating water pump C, 21. data center floor, 22. sixth pipeline, 23. spray device C, 24. packing B, 25. water baffle B, 26. axial flow fan, 27. exhaust port, 28. water tank A, 29. water tank B, 30. heat exchanger, 31. data center room, 32. server, 33. exhaust , 34. Machine room exhaust vent, 35. Coolant supply pipe, 36. Coolant return pipe, 37. Machine room air supply duct, 38. Evaporator, 39. Condenser, 40. Expansion valve, 41. Compressor, 42. Chiller, 43. Chiller water supply pipe, 44. Chiller return pipe, 45. Water supply pipe, 46. Return pipe, 47. Machine room return air vent, 48. Machine room return air duct, 49. First direct evaporative cooling section air inlet, 50. Second direct evaporative cooling section air inlet, 51. Machine housing, 52. Return air duct, 53. Machine room air inlet, 54. Second partition, 55. First duct, 56. Second duct, 57. Third duct, 58. Fourth duct, 59. First partition, 60. First filler direct evaporative cooling unit housing. DETAILED DESCRIPTION

[0038] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.

[0039] The utility model provides a system combining a cold air and cold water composite air conditioning unit with a cold plate type liquid cooling, such as Figure 1-2 As shown, it includes an indoor terminal unit, an outdoor cold source terminal unit, a heat exchange unit and a chiller 42;

[0040] The indoor terminal unit includes a return air duct 52 arranged at the ceiling of the data center computer room 31, and a plurality of computer room return air outlets 47 are arranged on the return air duct 52; a computer room exhaust outlet 34 is also arranged at one end of the return air duct 52, and the computer room exhaust outlet 34 is connected to the outdoor cold source terminal unit through the computer room return air duct 48; it also includes a computer room air inlet 53 arranged on the wall of the data center computer room 31, and the computer room air inlet 53 is connected to the outdoor cold source terminal unit through the computer room air supply duct 37; it also includes a cold plate arranged on the chip of the server in each cabinet 32; the cabinets 32 are all placed on the floor 21 of the data center;

[0041] The heat exchange unit is connected to the outdoor cold source unit and each cold plate; the chiller 42 is respectively connected to the outdoor cold source unit through the chiller water supply pipe 43 and the chiller water return pipe 44.

[0042] The outdoor cold source unit includes a unit housing 51, and an independent first air duct and second air duct are arranged inside the unit housing 51, which are used to produce cold air and cold water respectively;

[0043] A cold air production unit is arranged in the first air duct, and a cold water production unit is arranged in the second air duct; the first air duct is connected to the machine room exhaust port 34 through the machine room return air duct 48, and the first air duct is communicated with the machine room air inlet 53 arranged on the wall of the data center machine room 31 through the machine room supply air duct 37;

[0044] The cold air production unit is respectively connected to the chiller 42 through the chiller water supply pipe 43 and the chiller water return pipe 44; both the cold air production unit and the cold water production unit are connected to the heat exchange unit.

[0045] An air return port 10 is arranged on the top wall of the unit housing 51 corresponding to the first air duct, and an air supply port 1 is arranged on the side wall of the unit housing 51 corresponding to the first air duct; the machine room exhaust port 34 is connected to the air return port 10 through the machine room return air duct 48; the machine room air inlet 53 is connected to the air supply port 1 through the machine room supply air duct 37;

[0046] The cold air production unit includes a surface cooler A9, a wet film cooling section, a surface cooler B4, a fan 3 and a filter A2 arranged in sequence in the first air duct according to the air flow direction; the filter A2 is arranged close to the air supply port 1, and the surface cooler A9 is arranged close to the air return port 10; the high-temperature return air in the data center machine room 31 is sent into the unit through the machine room return air duct 48, cooled and then sent back into the machine room through the machine room supply air duct 37;

[0047] An exhaust port 27 is arranged on the top wall of the unit housing 51 corresponding to the second air duct, and a fresh air grille air inlet 11 is arranged on the side wall of the unit housing 51 corresponding to the second air duct, and fresh air is introduced by using a grille. The cold water production unit includes a filter B12, a surface cooler C13, a first partition 59, a first packing direct evaporation cooling section, a second partition 54 and a second packing direct evaporation cooling section arranged in sequence in the second air duct according to the air flow; the first packing direct evaporation cooling section is connected to the second packing direct evaporation cooling section through the sixth pipe 22; the cold water produced in the water tank B29 in the second packing direct evaporation cooling section is sent to the heat exchanger 30 to exchange heat with the high-temperature coolant flowing back from the end.

[0048] The second filler direct evaporative cooling section is located below the exhaust port 27, and the filter B12 is arranged near the fresh air grille air port 11; the first direct evaporative cooling section air inlet 49 is arranged on the first partition plate 59, and the second direct evaporative cooling section air inlet 50 is arranged on the second partition plate 54;

[0049] The heat exchange unit includes a heat exchanger 30, a water supply pipe 45 and a water return pipe 46; the water inlet of the surface cooler A9 is connected to the water supply pipe 45 through the first pipe 55, and the water outlet of the surface cooler A9 is connected to the heat exchanger 30 through the water return pipe 46; the water inlet of the surface cooler C13 is connected to the first pipe 55 through the second pipe 56, and the water outlet of the surface cooler C13 is connected to the water return pipe 46 through the third pipe 57; the second filler direct evaporative cooling section is connected to the heat exchanger 30 through the water supply pipe 45. The heat exchanger 30 is connected to the heat exchanger 30, and the other end of the coolant supply pipe 35 is divided into a plurality of coolant supply branches, each of which is connected to the outlet of a cold plate; one end of the coolant return pipe 36 is connected to the heat exchanger 30, and the other end of the coolant return pipe 36 is divided into a plurality of coolant return branches, each of which is connected to the inlet of a cold plate;

[0050] The chiller includes a compressor 41, a condenser 39, an expansion valve 40 and an evaporator 38 which are connected in sequence through pipes to form a closed loop; the evaporator 38 is connected to the water inlet of the surface cooler B4 through the chiller water supply pipe 43, and the evaporator 38 is connected to the water outlet of the surface cooler B4 through the chiller return pipe 44.

[0051] The wet film cooling section includes a spray device A7, a wet film 8 and a first water tank 6 which are arranged in sequence from top to bottom; the spray device A7 is connected to the first water tank 6 through a fourth pipeline 58; and a circulating water pump A5 is arranged on the fourth pipeline 58.

[0052] The first filler direct evaporative cooling section includes a first filler direct evaporative cooling unit shell 60, a first partition plate 59 is used as a side wall of the first filler direct evaporative cooling unit shell 60, a machine room return air outlet 47 is arranged on the top wall of the first filler direct evaporative cooling unit shell 60, and a guide plate 19 is arranged at the machine room return air outlet 47; the guide plate 19 guides the fresh air to the second direct evaporative cooling section;

[0053] A water retaining plate A17, a spraying device B18, a packing A16 and a water tank A28 are arranged on one side from top to bottom in the first packing direct evaporative cooling unit shell 60; the spraying device B18 is connected to the water tank A28 through the fifth pipe 15, and a circulating water pump B14 is arranged on the fifth pipe 15; the machine room return air outlet 47 is located on the side wall of the first packing direct evaporative cooling unit shell 60 corresponding to the position between the packing A16 and the water tank A28; the water tank A28 is connected to the second packing direct evaporative cooling section through the sixth pipe 22.

[0054] The second filler direct evaporative cooling section includes an axial flow fan 26, a water baffle B25, a spray device C23, a filler B24 and a water tank B29 arranged from top to bottom; the water tank A28 is connected to the spray device C23 through a sixth pipeline 22; a circulating water pump C20 is arranged on the sixth pipeline 22;

[0055] The air inlet 50 of the second direct evaporative cooling section is located at the second partition plate 54 corresponding to the position between the filler B24 and the water tank B29.

[0056] An exhaust fan 33 is provided at the exhaust port 34 of the machine room.

[0057] The fillers of the first direct evaporative cooling section and the second direct evaporative cooling section in the second air duct are in a ladder shape, which caters to the air flow direction and increases the contact area between the air and the fillers;

[0058] The first air duct in the outdoor cold source terminal unit is the process of producing cold air, that is, the return air of the data center computer room 31 is sent back to the inside of the data center computer room 31 after being pre-cooled by the surface cooler A9, cooled by the wet film 8 and supplemented by the surface cooler B4; the second air duct is the process of producing cold water, that is, the outdoor fresh air is first pre-cooled by the surface cooler C13, and then directly evaporates and cools twice, and the cold water finally produced is used as the indoor terminal cold source; the return air of the computer room in the first air duct is pre-cooled step by step by the surface cooler A9 and the wet film 8 cooling section, and then further iso-wet cooled by the surface cooler B4, which can maximize the use of natural cold sources; The cold water in the surface cooler B4 in the first air duct is provided by an external chiller 42; a part of the cold water produced at the cold source end of the liquid cooling secondary side is exchanged with the indoor terminal cooling liquid, and the other part is respectively led to the surface cooler A9 in the first air duct and the surface cooler C13 in the second air duct for primary air pre-cooling, and finally returns to the first direct evaporative cooling spray end in the second air duct; the cold air / cold water composite air-conditioning unit can produce cold water as the indoor terminal cold source, and can also use the return air from the computer room to produce low-temperature cold air, which not only supplements the cooling for the data center computer room 31, but also improves the comfort of the operation and maintenance personnel in the computer room.

[0059] The utility model is a system combining cold air and cold water composite air conditioning unit with cold plate liquid cooling. The outdoor cold source end unit consists of two parts: cold air production and cold water production. Its working principle is as follows:

[0060] 1. The working process of producing cold air is as follows:

[0061] The return air from the computer room in the first air duct enters the computer room return air duct 48 through the return air port 10 under the action of the exhaust fan 33 and is then sent to the interior of the unit. It first passes through the surface cooler A9 for primary pre-cooling, and the pre-cooled air is then cooled and humidified after passing through the wet film 8. Then, under the wet cooling action of the surface cooler B4 that passes cold water from the external chiller 42, the temperature is further reduced, and finally, it is sent to the interior of the data center computer room 31 through the air supply duct 37.

[0062] 2. The working process of making cold water is as follows:

[0063] The outdoor fresh air enters the unit from the grille air outlet 11 and is roughly filtered by the filter B12. It is first pre-cooled by the surface cooler C13. The pre-cooled air enters the first direct evaporative cooling section through the air duct. At this time, the water in the fifth pipe 15 is sprayed out through the spray device B18 under the action of the circulating water pump B14 and evenly spreads on the top of the filler A16. After the diffusion of gravity and capillary force, the surface of the filler A16 is filled with water film, and the excess water falls into the water tank A28. The air is acted upon by the axial flow fan 26, passes through the packing A 16 along the four sides of the unit, and directly contacts and exchanges heat with the water film on the surface of the packing, so that the temperature of the return water is reduced, and the water in the water tank A 28 is pumped by the circulating water pump C 20 to the sixth pipe 22 in the second direct evaporative cooling section to continue to exchange heat and moisture with the air. After the heat exchange, the cold water falls into the water tank B 29 and is sent to the surface cooler A 9 and the surface cooler C 13 through the water supply pipe 45, and the other part is sent to the heat exchanger 30 to exchange heat with the coolant, and then returns to the fifth pipe 15 of the first direct evaporative cooling section after the heat exchange, and the cycle repeats.

[0064] The outdoor cold source air conditioning units of this system are divided into three operating modes according to seasonal changes:

[0065] 1. In summer, the outdoor temperature is high and the wet-bulb temperature is also high. The unit operates in mixed mode. At this time, all modules in the outdoor cold source end unit operate at the same time. The cold air produced in the first air duct mainly plays a cooling role and can bear about 30% of the load in the computer room. The temperature of the cold air can be adjusted by the chiller.

[0066] 2. In winter, the external ambient temperature is much lower than the temperature inside the computer room. At this time, the module for producing cold water in the second air duct can stop running, and the return air from the computer room in the first air duct can be sent into the computer room after wet film cooling treatment.

[0067] 3. In the transition season, the external ambient temperature is relatively mild. At this time, the module for producing cold water in the second air duct of the unit is running, while the wet film cooling section and the chiller in the first air duct can be stopped. The return air from the machine room only needs to be pre-cooled by the surface cooler A9 before being sent to the machine room.

[0068] The utility model combines a cold air and cold water composite air conditioning unit with a cold plate liquid cooling system, which mainly uses cold plate liquid cooling under natural cooling to bear about 70% of the load of the computer room; air cooling is used as a supplement to bear the remaining 30% of the load, making full use of the natural cold source to cool the data center, thereby improving the energy utilization efficiency of the data center, reducing the PUE of the data center, and improving the comfort of the operation and maintenance personnel in the computer room.

[0069] Example 1

[0070] A system combining cold air and cold water composite air conditioning units with cold plate liquid cooling, such as Figure 1-2 As shown, it includes an indoor terminal unit, an outdoor cold source terminal unit, a heat exchange unit and a chiller 42;

[0071] The indoor terminal unit includes a return air duct 52 arranged at the ceiling of the data center computer room 31, and a plurality of computer room return air outlets 47 are arranged on the return air duct 52; a computer room exhaust outlet 34 is also arranged at one end of the return air duct 52, and the computer room exhaust outlet 34 is connected to the outdoor cold source terminal unit through the computer room return air duct 48; it also includes a computer room air inlet 53 arranged on the wall of the data center computer room 31, and the computer room air inlet 53 is connected to the outdoor cold source terminal unit through the computer room air supply duct 37; it also includes a cold plate arranged on the chip of the server in each cabinet 32; the cabinets 32 are all placed on the floor 21 of the data center;

[0072] The heat exchange unit is connected to the outdoor cold source end unit and each cold plate; the chiller 42 is connected to the outdoor cold source end unit through the chiller water supply pipe 43 and the chiller water return pipe 44 respectively.

[0073] Example 2

[0074] A system combining cold air and cold water composite air conditioning units with cold plate liquid cooling, such as Figure 1-2 As shown, it includes an indoor terminal unit, an outdoor cold source terminal unit, a heat exchange unit and a chiller 42;

[0075] The indoor terminal unit includes a return air duct 52 arranged at the ceiling of the data center computer room 31, and a plurality of computer room return air outlets 47 are arranged on the return air duct 52; a computer room exhaust outlet 34 is also arranged at one end of the return air duct 52, and the computer room exhaust outlet 34 is connected to the outdoor cold source terminal unit through the computer room return air duct 48; it also includes a computer room air inlet 53 arranged on the wall of the data center computer room 31, and the computer room air inlet 53 is connected to the outdoor cold source terminal unit through the computer room air supply duct 37; it also includes a cold plate arranged on the chip of the server in each cabinet 32; the cabinets 32 are all placed on the floor 21 of the data center;

[0076] The heat exchange unit is connected to the outdoor cold source end unit and each cold plate; the chiller 42 is connected to the outdoor cold source end unit through the chiller water supply pipe 43 and the chiller water return pipe 44 respectively.

[0077] The outdoor cold source terminal unit includes a unit housing 51, and the unit housing 51 is provided with a first air duct and a second air duct which are independent of each other and are used to produce cold air and cold water respectively;

[0078] A cold air production unit is provided in the first air duct, and a cold water production unit is provided in the second air duct; the first air duct is connected to the machine room exhaust port 34 through the machine room return air duct 48, and the first air duct is connected to the machine room air inlet 53 provided on the wall of the data center machine room 31 through the machine room air supply duct 37;

[0079] The cold air production unit is connected to the chiller 42 through the chiller water supply pipe 43 and the chiller water return pipe 44 respectively; the cold air production unit and the cold water production unit are both connected to the heat exchange unit.

[0080] Example 3

[0081] A system combining cold air and cold water composite air conditioning units with cold plate liquid cooling, such as Figure 1-2 As shown, it includes an indoor terminal unit, an outdoor cold source terminal unit, a heat exchange unit and a chiller 42;

[0082] The indoor terminal unit includes a return air duct 52 arranged at the ceiling of the data center computer room 31, and a plurality of computer room return air outlets 47 are arranged on the return air duct 52; a computer room exhaust outlet 34 is also arranged at one end of the return air duct 52, and the computer room exhaust outlet 34 is connected to the outdoor cold source terminal unit through the computer room return air duct 48; it also includes a computer room air inlet 53 arranged on the wall of the data center computer room 31, and the computer room air inlet 53 is connected to the outdoor cold source terminal unit through the computer room air supply duct 37; it also includes a cold plate arranged on the chip of the server in each cabinet 32; the cabinets 32 are all placed on the floor 21 of the data center;

[0083] The heat exchange unit is connected to the outdoor cold source end unit and each cold plate; the chiller 42 is connected to the outdoor cold source end unit through the chiller water supply pipe 43 and the chiller water return pipe 44 respectively.

[0084] The outdoor cold source terminal unit includes a unit housing 51, and the unit housing 51 is provided with a first air duct and a second air duct which are independent of each other and are used to produce cold air and cold water respectively;

[0085] A cold air production unit is provided in the first air duct, and a cold water production unit is provided in the second air duct; the first air duct is connected to the machine room exhaust port 34 through the machine room return air duct 48, and the first air duct is connected to the machine room air inlet 53 provided on the wall of the data center machine room 31 through the machine room air supply duct 37;

[0086] The cold air production unit is connected to the chiller 42 through the chiller water supply pipe 43 and the chiller water return pipe 44 respectively; the cold air production unit and the cold water production unit are both connected to the heat exchange unit.

[0087] A return air port 10 is provided on the top wall of the unit housing 51 corresponding to the first air duct, and an air supply port 1 is provided on the side wall of the unit housing 51 corresponding to the first air duct; the machine room exhaust port 34 is connected to the return air port 10 through the machine room return air duct 48; the machine room air inlet 53 is connected to the air supply port 1 through the machine room air supply duct 37;

[0088] The cold air production unit includes a surface cooler A9, a wet film cooling section, a surface cooler B4, a fan 3 and a filter A2 which are arranged in sequence in the first air duct according to the air flow direction; the filter A2 is arranged near the air supply port 1, and the surface cooler A9 is arranged near the return air port 10; the high-temperature return air in the data center computer room 31 is sent into the unit through the computer room return air duct 48, and is then sent to the inside of the computer room through the computer room supply air duct 37;

[0089] An exhaust port 27 is provided on the top wall of the unit shell 51 corresponding to the second air duct, and a fresh air grille port 11 is provided on the side wall of the unit shell 51 corresponding to the second air duct. Fresh air is introduced by the grille. The cold water preparation unit includes a filter B12, a surface cooler C13, a first partition plate 59, a first filler direct evaporative cooling section, a second partition plate 54 and a second filler direct evaporative cooling section, which are arranged in sequence according to air circulation in the second air duct; the first filler direct evaporative cooling section is connected to the second filler direct evaporative cooling section through a sixth pipeline 22; the cold water prepared in the water tank B29 in the second filler direct evaporative cooling section is sent to the heat exchanger 30 for heat exchange with the high-temperature coolant refluxed at the end.

Claims

1. A system combining cold air and cold water composite air conditioning units with cold plate liquid cooling, characterized in that: It includes an indoor terminal unit, an outdoor cold source terminal unit, a heat exchange unit and a chiller (42); The indoor terminal unit includes a return air duct (52) arranged on the ceiling of a data center computer room (31), and a plurality of computer room return air outlets (47) are arranged on the return air duct (52); a computer room exhaust outlet (34) is also arranged at one end of the return air duct (52), and the computer room exhaust outlet (34) is connected to the outdoor cold source terminal unit through a computer room return air duct (48); it also includes a computer room air inlet (53) arranged on the wall of the data center computer room (31), and the computer room air inlet (53) is connected to the outdoor cold source terminal unit through a computer room air supply duct (37); it also includes a cold plate arranged on the chip of the server in each cabinet (32); The heat exchange unit is connected to the outdoor cold source end unit and each cold plate; the chiller (42) is connected to the outdoor cold source end unit via a chiller water supply pipe (43) and a chiller water return pipe (44).

2. The system combining cold air and cold water composite air conditioning unit with cold plate liquid cooling according to claim 1, characterized in that: The outdoor cold source terminal unit comprises a machine housing (51), wherein the machine housing (51) is provided with a first air duct and a second air duct which are independent of each other; a cold air preparation unit is provided in the first air duct, and a cold water preparation unit is provided in the second air duct; the first air duct is connected to the machine room exhaust port (34) via a machine room return air duct (48), and the first air duct is connected to the machine room air inlet (53) provided on the wall of the data center machine room (31) via a machine room air supply duct (37); The cold air production unit is connected to the chiller (42) via a chiller water supply pipe (43) and a chiller water return pipe (44), respectively; the cold air production unit and the cold water production unit are both connected to the heat exchange unit.

3. The system combining cold air and cold water composite air conditioning unit with cold plate liquid cooling according to claim 2, characterized in that: A return air port (10) is provided on the top wall of the unit housing (51) corresponding to the first air duct, and an air supply port (1) is provided on the side wall of the unit housing (51) corresponding to the first air duct; the machine room air outlet (34) is connected to the return air port (10) via a machine room return air duct (48); and the machine room air inlet (53) is connected to the air supply port (1) via a machine room supply air duct (37); The cold air production unit comprises a surface cooler A (9), a wet film cooling section, a surface cooler B (4), a fan (3) and a filter A (2) which are arranged in sequence in the first air duct according to the air flow direction; the filter A (2) is arranged near the air supply port (1), and the surface cooler A (9) is arranged near the return air port (10); An exhaust port (27) is provided on the top wall of the unit housing (51) corresponding to the second air duct, and a fresh air grille port (11) is provided on the side wall of the unit housing (51) corresponding to the second air duct. The cold water preparation unit comprises a filter B (12), a surface cooler C (13), a first partition (59), a first filler direct evaporative cooling section, a second partition (54) and a second filler direct evaporative cooling section, which are arranged in sequence according to air circulation in the second air duct; the first filler direct evaporative cooling section is connected to the second filler direct evaporative cooling section via a sixth pipe (22); The second filler direct evaporative cooling section is located below the air outlet (27), and the filter B (12) is arranged close to the fresh air grille air outlet (11); the first partition plate (59) is provided with a first direct evaporative cooling section air inlet (49), and the second partition plate (54) is provided with a second direct evaporative cooling section air inlet (50); The heat exchange unit comprises a heat exchanger (30), a water supply pipe (45) and a water return pipe (46); the water inlet of the cooler A (9) is connected to the water supply pipe (45) through a first pipe (55), and the water outlet of the cooler A (9) is connected to the heat exchanger (30) through the water return pipe (46); the water inlet of the cooler C (13) is connected to the first pipe (55) through a second pipe (56), and the water outlet of the cooler C (13) is connected to the water return pipe (46) through a third pipe (57); the second filler direct evaporative cooling section is connected to the water supply pipe (45) through the water supply pipe (45). The cooling device is connected to the heat exchanger (30); and further comprises a cooling liquid supply pipe (35) and a cooling liquid return pipe (36); one end of the cooling liquid supply pipe (35) is connected to the heat exchanger (30); the other end of the cooling liquid supply pipe (35) is divided into a plurality of cooling liquid supply branch pipes, each of which is connected to a liquid outlet of a cold plate; one end of the cooling liquid return pipe (36) is connected to the heat exchanger (30); the other end of the cooling liquid return pipe (36) is divided into a plurality of cooling liquid return branch pipes, each of which is connected to a liquid inlet of a cold plate; The chiller comprises a compressor (41), a condenser (39), an expansion valve (40) and an evaporator (38) which are connected in sequence through pipelines to form a closed loop; the evaporator (38) is connected to a water inlet of a surface cooler B (4) through a water supply pipe (43) of the chiller, and the evaporator (38) is connected to a water outlet of the surface cooler B (4) through a water return pipe (44) of the chiller.

4. The system combining cold air and cold water composite air conditioning unit with cold plate liquid cooling according to claim 3, characterized in that: The wet film cooling section comprises a spray device A (7), a wet film (8) and a first water tank (6) arranged in sequence from top to bottom; the spray device A (7) is connected to the first water tank (6) via a fourth pipe (58); and a circulating water pump A (5) is arranged on the fourth pipe (58).

5. The system combining cold air and cold water composite air conditioning unit with cold plate type liquid cooling according to claim 3, characterized in that: The first filler direct evaporative cooling section comprises a first filler direct evaporative cooling unit shell (60); the first partition plate (59) is used as a side wall of the first filler direct evaporative cooling unit shell (60); a machine room return air outlet (47) is provided on the top wall of the first filler direct evaporative cooling unit shell (60); and a guide plate (19) is provided at the machine room return air outlet (47); A water retaining plate A (17), a spray device B (18), a filler A (16) and a water tank A (28) are arranged on one side from top to bottom in the first filler direct evaporative cooling unit shell (60); the spray device B (18) is connected to the water tank A (28) through a fifth pipe (15), and a circulating water pump B (14) is arranged on the fifth pipe (15); the water tank A (28) is connected to the second filler direct evaporative cooling section through a sixth pipe (22).

6. The system combining cold air and cold water composite air conditioning unit with cold plate type liquid cooling according to claim 5, characterized in that: The second filler direct evaporative cooling section comprises an axial flow fan (26), a water baffle B (25), a spray device C (23), a filler B (24) and a water tank B (29) arranged from top to bottom; the water tank A (28) is connected to the spray device C (23) via a sixth pipe (22); A circulating water pump C (20) is provided on the sixth pipeline (22).

7. The system combining cold air and cold water composite air conditioning unit with cold plate type liquid cooling according to claim 1, characterized in that: An exhaust fan (33) is provided at the machine room exhaust port (34).

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