A modular dual-cooling-source data center cooling system combined with fresh air

Abstract

The present invention discloses a modular dual-cooling-source data center cooling system combined with fresh air, which includes a fresh air treatment section module, a mixed air section module, a water evaporation refrigeration section module, and a mechanical refrigeration section module; it has prominent advantages such as convenient assembly, low maintenance volume, high reliability, and low energy consumption. On the basis of ensuring a clean environment in the data center, it realizes a slightly positive pressure in the protected space. The system can automatically adjust the configuration of the cooling source according to the actual situation of the natural environment, achieving the maximum energy saving.

Description

Technical Field

[0001] The present invention relates to a cooling device for a data center, specifically a modular dual-cooling-source data center cooling system combined with fresh air. Background Art

[0002] The atmosphere contains a large amount of corrosive gases (such as H2S, HCL, SOx, NOx, etc.) and dust particles. In a data center, there are a large number of data processing devices. If the outdoor air directly enters the indoor air without treatment, these precision instruments will suffer serious corrosion, affecting their normal use. In addition, the data center has higher requirements for dust than other ordinary environments.

[0003] Since a data center is for data exchange and storage, it will emit a large amount of heat energy, and air flow is required to take away this heat energy to prevent server downtime. Due to the particularity of the data center, the air flow temperature cannot be too low or too high. If it is too low, condensation will occur, easily causing short circuits in each data module; if the heat cannot be taken away when it is too high, it will also affect the operation of the data module.

[0004] A data center generally operates throughout the year, and the equipment generates heat throughout the year, and its heat needs to be taken away. Since the natural temperature difference is large throughout the four seasons of the year, it is completely possible to directly exchange heat with nature by utilizing the large temperature difference between the four seasons and day and night in nature; at the same time, the evaporation refrigeration can be utilized due to the relatively low water content in the air in the north to achieve the goal of high efficiency and energy saving.

[0005] Currently, the cooling equipment for data centers is basically separated from fresh air. The fresh air is responsible for the positive pressure environment of the data center, and the cooling equipment is solved by full return air through water evaporation or mechanical refrigeration (direct expansion and water cooling). This situation is not conducive to achieving maximum energy saving according to the temperature difference between seasons and day and night, nor is it conducive to adjusting the temperature difference according to the dryness and wetness of the four seasons to achieve the purpose of energy saving. On the one hand, for mechanical refrigeration, when the environmental temperature is low, refrigeration is not good for the compression refrigeration system, and the compressor cannot work in harsh conditions, while at this time, the natural low-temperature environment can actually be used for cooling; on the other hand, in autumn, the climate is dry, and water is easy to evaporate and absorb heat to cool down, so the natural dryness and wetness can be used to adjust the temperature difference.

[0006] Patent 2019101562507, "Data Center Air Conditioning System Combining Mechanical Refrigeration System and Natural Cooling Method", describes that after heat exchange with the outside world using water or ethylene glycol as the primary or secondary medium, it then flows through pipelines to the data center and exchanges heat with the indoor air of the data center. There are problems such as a complex pipeline system, no direct utilization of the temperature difference between the four seasons and day and night in nature, the need to exchange heat with water or ethylene glycol, reducing the heat exchange efficiency. And there is also the problem of pipeline leakage, bringing irreparable losses to the data center. In addition, the slightly positive pressure environment required by the data center still needs to be maintained by an additional fresh air fan, increasing equipment and maintenance costs.

[0007] Therefore, developing a modular dual-cooling-source data center cooling system combined with fresh air can solve such problems. Summary of the Invention

[0008] The object of the present invention is to provide a modular dual-cooling-source data center cooling system combined with fresh air to solve the above problems, providing a fresh air treatment section module, a mixed air section module, a water evaporation refrigeration section module, and a mechanical refrigeration section module. The present invention has the characteristics of combining fresh air and air conditioning, reducing the one-time investment and maintenance costs; making full use of the day-night temperature difference and the dry-wet conditions in all seasons of the fresh air in the slightly positive pressure environment required by the data center for adjustment, with high energy efficiency; modular combination, simple and convenient installation, avoiding low-temperature compressor refrigeration, and high reliability; adopting a self-cleaning filter, reducing the labor and the cost of filter replacement and maintenance; directly sending air with appropriate temperature and humidity into the data center through the air duct system, avoiding the installation and maintenance of complex pipeline systems and excessive equipment, realizing a slightly positive pressure in the protection space on the basis of ensuring the cleanliness of the data center environment, and the system can automatically adjust the configuration of the cooling source according to the actual situation of the natural environment to maximize energy conservation.

[0009] The technical solution provided by the present invention includes a fresh air treatment section module, a mixed air section module, a water evaporation refrigeration section module, and a mechanical refrigeration section module; the fresh air treatment section module includes a fresh air treatment box, a first air inlet provided on one side of the fresh air treatment box, a first air outlet provided on the other side of the fresh air treatment box, a first air valve provided at the first air inlet, a self-cleaning filter device provided in the fresh air treatment box and near the first air inlet, a chemical filter provided in the fresh air treatment box and near the output end of the self-cleaning filter device, and a medium-effect physical filter provided in the fresh air treatment box and near the first air outlet; the mixed air section module includes a mixed air box, a second air inlet provided on one side of the mixed air box and matching with the first air outlet, a second air outlet provided on the other side of the mixed air box, a first fan provided in the mixed air box and near the second air inlet, a high-efficiency physical filter provided in the mixed air box on the other side of the first fan and near the second air outlet, a return air inlet provided on the top of the mixed air box and near the second air inlet, a second air valve provided at the return air inlet, a return air duct with one end connected to the return air inlet, a second fan provided at the top of the other end of the return air duct, and a third air valve provided at the second fan; the water evaporation refrigeration section module includes a water evaporation refrigeration box, a third air inlet provided on one side of the water evaporation refrigeration box and matching with the second air outlet, a third air outlet provided on the other side of the water evaporation refrigeration box, and a water evaporation refrigeration system provided in the water evaporation refrigeration box between the third air inlet and the third air outlet; the mechanical refrigeration section module includes a mechanical refrigeration box, a fourth air inlet provided on one side of the mechanical refrigeration box and matching with the third air outlet, a left compartment and a right compartment provided in the mechanical refrigeration box, an evaporation device provided in the right compartment and near the fourth air inlet, and a condensation device provided in the left compartment and on the other side of the evaporation device.

[0010] Preferably, the self-cleaning filter device includes a ventilation duct with one end connected to the first air inlet and the other end near the input end of the chemical filter, a dust collection box provided in the ventilation duct and with an opening facing the input end of the ventilation duct, two sets of bending blades provided in the ventilation duct and with the tails connected to the relative position of the input of the dust collection box and inclined inward, a zigzag air flow path defined between adjacent bending blades, a guide plate provided between the two sets of bending blades, and a third fan with an input end connected to the output end of the dust collection box and an output end penetrating the ventilation duct.

[0011] Preferably, the bending blades and the dust collection box are arranged in a V-shaped structure.

[0012] Preferably, the input end of the zigzag air flow path is opposite to the input end direction of the ventilation duct.

[0013] Preferably, the bending angle of the bending blades is [angle value 1]-[angle value 2] degrees.

[0014] Preferably, the water evaporation refrigeration system includes a first heat preservation water tank disposed at the inner bottom of the water evaporation refrigeration box and near the third air inlet end, a heat exchanger disposed in the water evaporation refrigeration box and on top of the first heat preservation water tank, an aluminum pipe disposed on the heat exchanger, a first circulating water pump disposed in the water evaporation refrigeration box and with its input end connected to the first heat preservation water tank, a first water delivery pipe with one end connected to the output end of the first circulating water pump and the other end located above the heat exchanger, a plurality of first sprayers disposed on the lower surface of the first water delivery pipe and above the heat exchanger, a fourth blower disposed on the top of the water evaporation refrigeration box and above the first water delivery pipe, a water tank support frame disposed at the inner bottom of the water evaporation refrigeration box and on one side of the first heat preservation water tank, a second heat preservation water tank disposed on the water tank support frame, a humidifier disposed on the second heat preservation water tank, a wet film disposed on the second heat preservation water tank, a second sprayer disposed on the wet film, a second circulating water pump disposed in the second heat preservation water tank, a second water delivery pipe with one end connected to the second circulating water pump and the other end connected to the second sprayer, a first diversion pipe with one end connected to the first heat preservation water tank and the other end connected to the second heat preservation water tank, a first solenoid valve disposed on the first diversion pipe and near the first heat preservation water tank, a first solenoid valve disposed on the first diversion pipe and near the second heat preservation water tank, and first grilles disposed on both sides of the first heat preservation water tank in the water evaporation refrigeration box.

[0015] Preferably, the first heat preservation water tank is provided with a first sewage outlet, and the second heat preservation water tank is provided with a second sewage outlet.

[0016] Preferably, the evaporation device of the mechanical refrigeration section module includes a water collecting tray disposed at the inner bottom of the right compartment and near the fourth air inlet, a second diversion pipe with one end connected to the water collecting tray and the other end connected to the first heat preservation water tank, an evaporator disposed in the right compartment and with its bottom connected to the top of the water collecting tray, an air outlet disposed at the other side of the water collecting tray at the bottom of the right compartment and below the evaporator, an air delivery pipe with one end connected to the air outlet, and an expansion throttle valve disposed at the input end of the evaporator.

[0017] Preferably, the condensation device of the mechanical refrigeration section module includes a compressor disposed at the inner bottom of the left compartment, a condenser disposed in the left compartment and above the compressor, a first refrigerant connection pipe with one end connected to the output end of the evaporator and the other end connected to the input end of the compressor, a first refrigerant connection pipe with one end connected to the output end of the compressor and the other end connected to the input end of the condenser, the output end of the condenser directly communicating with the right compartment and connected to the expansion throttle valve in the right compartment, a fifth blower disposed on the top of the left compartment and above the condenser, and a second grille disposed at the bottom of the left compartment.

[0018] Advantages of the present invention: The present invention has a reasonable and simple structure, low production cost, convenient installation, and complete functions. The present invention has the characteristics of a combination of fresh air and air conditioning, reducing the one-time investment and maintenance cost; making full use of the day-night temperature difference and the dry-wet conditions in all seasons of the fresh air in the slightly positive pressure environment required by the data center for adjustment, with high energy efficiency; modular combination, simple and convenient installation, avoiding low-temperature compressor refrigeration, and high reliability; adopting a self-cleaning filter, reducing labor and filter replacement and maintenance costs; directly sending air with appropriate temperature and humidity into the data center through the air duct system, avoiding the installation and maintenance of complex pipeline systems and excessive equipment, achieving a slightly positive pressure in the protective space on the basis of ensuring the cleanliness of the data center environment, and the system can automatically adjust the configuration of the cold source according to the actual situation of the natural environment to maximize energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] For ease of explanation, the present invention will be described in detail by the following specific embodiments and the accompanying drawings.

[0020] Figure 1 is the schematic diagram of the present invention;

[0021] Figure 2 is the schematic diagram of the fresh air treatment section module of the present invention;

[0022] Figure 3 is the schematic diagram of the air mixing section module of the present invention;

[0023] Figure 4 is the schematic diagram of the evaporative cooling section module of the present invention;

[0024] Figure 5 is the schematic diagram of the mechanical refrigeration section of the present invention.

[0025] 1 - Fresh air treatment box; 2 - First air inlet; 3 - First air outlet; 4 - First air valve; 5 - Chemical filter; 6 - Medium - efficiency physical filter; 7 - Air mixing box; 8 - Second air inlet; 9 - Second air outlet; 10 - First fan; 11 - High - efficiency physical filter; 12 - Return air inlet; 13 - Second air valve; 14 - Return air duct; 15 - Second fan; 16 - Third air valve; 17 - Water evaporation refrigeration box; 18 - Third air inlet; 19 - Third air outlet; 20 - Mechanical refrigeration box; 21 - Fourth air inlet; 22 - Left compartment; 23 - Right compartment; 24 - Ventilation duct; 25 - Dust collection box; 26 - Bent blade; 27 - Zigzag air flow path; 28 - Third fan; 29 - Insulated water tank; 30 - Heat exchanger; 31 - Aluminum pipe; 32 - Circulation water pump; 33 - First water delivery pipe; 34 - First sprayer; 35 - Fourth fan; 36 - Water tank support frame; 37 - Humidifier; 38 - Wet film; 39 - Second water delivery pipe; 40 - Second sprayer; 41 - First guide pipe; 42 - First solenoid valve; 43 - Second solenoid valve; 44 - First grille; 45 - First sewage outlet; 46 - Second sewage outlet; 47 - Water collection tray; 48 - Second guide pipe; 49 - Evaporator; 50 - Air supply outlet; 51 - Air supply duct; 52 - Compressor; 53 - First refrigerant connection pipe; 54 - Condenser; 55 - Fifth fan; 56 - Second refrigerant connection pipe; 57 - Expansion throttle valve; 58 - Second grille; 59 - Deflector; 60 - Second insulated water tank; 61 - Second circulation water pump. Detailed implementation mode

[0026] Such as Figures 1 to 5As shown in the figure, the following technical solutions are adopted in this specific embodiment: it includes a fresh air treatment section module, a mixed air section module, a water evaporation refrigeration section module, and a mechanical refrigeration section module; for the fresh air treatment section module, it includes a fresh air treatment box 1, a first air inlet 2 arranged on one side of the fresh air treatment box 1, a first air outlet 3 arranged on the other side of the fresh air treatment box 1, a first air valve 4 arranged at the first air inlet 2, a self-cleaning filter device arranged in the fresh air treatment box 1 and close to the first air inlet 2, a chemical filter 5 arranged in the fresh air treatment box 1 and close to the output end of the self-cleaning filter device, and a medium-efficiency physical filter 6 arranged in the fresh air treatment box 1 and close to the first air outlet 3; for the mixed air section module, it includes a mixed air box 7, a second air inlet 8 arranged on one side of the mixed air box 7 and matching with the first air outlet 3, a second air outlet 9 arranged on the other side of the mixed air box 7, a first fan 10 arranged in the mixed air box 7 and close to the second air inlet 8, a high-efficiency physical filter 11 arranged in the mixed air box 7 on the other side of the first fan 10 and close to the second air outlet 9, a return air inlet 12 arranged on the top of the mixed air box 7 and close to the second air inlet 8, a second air valve 13 arranged at the return air inlet 12, a return air duct 14 with one end connected to the return air inlet 12, a second fan 15 arranged at the top of the other end of the return air duct 14, and a third air valve 16 arranged at the second fan 15; for the water evaporation refrigeration section module, it includes a water evaporation refrigeration box 17, a third air inlet 18 arranged on one side of the water evaporation refrigeration box 17 and matching with the second air outlet 9, a third air outlet 19 arranged on the other side of the water evaporation refrigeration box 17, and a water evaporation refrigeration system arranged in the water evaporation refrigeration box 17 between the third air inlet 18 and the third air outlet 19; for the mechanical refrigeration section module, it includes a mechanical refrigeration box 20, a fourth air inlet 21 arranged on one side of the mechanical refrigeration box 20 and matching with the third air outlet 19, a left compartment 22 and a right compartment 23 arranged in the mechanical refrigeration box 20, an evaporation device arranged in the right compartment 23 and close to the fourth air inlet 21, and a condensation device arranged in the left compartment 22 on the other side of the evaporation device.

[0027] Among them, the self-cleaning filtration device includes a ventilation duct 24 with one end connected to the first air inlet 2 and the other end close to the input end of the chemical filter 5, a dust collection box 25 arranged in the ventilation duct 24 and opening towards the input end of the ventilation duct 24, two groups of bending blades 26 arranged in the ventilation duct 24 with their tails connected to the relative position of the input of the dust collection box 25 and inclined inward, a zigzag air flow channel 27 defined between adjacent bending blades 26, a baffle plate 59 arranged between the two groups of bending blades 26, a third fan 28 with its input end connected to the output end of the dust collection box 25 and its output end passing through the ventilation duct 24; the bending blades 26 and the dust collection box 25 are connected in a V-shaped structure; the input end of the zigzag air flow channel 27 is opposite to the input end direction of the ventilation duct 24; the bending angle of the bending blades 26 is 60 degrees to 150 degrees; the water evaporation refrigeration system includes a first heat preservation water tank 29 arranged at the bottom inside the water evaporation refrigeration box 17 and close to the third air inlet 18 end, a heat exchanger 30 arranged inside the water evaporation refrigeration box 17 and on top of the first heat preservation water tank 29, an aluminum pipe 31 arranged on the heat exchanger 30, a first circulating water pump 32 arranged inside the water evaporation refrigeration box 17 with its input end connected to the first heat preservation water tank 29, a first water delivery pipe 33 with one end connected to the output end of the first circulating water pump 32 and the other end above the heat exchanger 30, a plurality of first sprayers 34 arranged on the lower surface of the first water delivery pipe 33 and above the heat exchanger 30, a fourth fan 35 arranged on top of the water evaporation refrigeration box 17 and above the first water delivery pipe 33, a water tank support frame 36 arranged at the bottom inside the water evaporation refrigeration box 17 and on one side of the first heat preservation water tank 29, a second heat preservation water tank 60 arranged on the water tank support frame 36, a humidifier 37 arranged on the second heat preservation water tank 60, a wet film 38 arranged on the second heat preservation water tank 60, a second sprayer 40 arranged on the wet film 38, a second circulating water pump 61 arranged in the second heat preservation water tank 60, a second water delivery pipe 39 with one end connected to the second circulating water pump 61 and the other end connected to the second sprayer 40, a first guide pipe 41 with one end connected to the first heat preservation water tank 29 and the other end connected to the second heat preservation water tank 60, a first solenoid valve 42 arranged on the first guide pipe 41 and close to the first heat preservation water tank 29, a first solenoid valve 42 arranged on the first guide pipe 41 and close to the second heat preservation water tank 60, first grilles 44 arranged on both sides of the first heat preservation water tank 29 inside the water evaporation refrigeration box 17; a first sewage outlet 45 is provided on the first heat preservation water tank 29, and a second sewage outlet 46 is provided on the second heat preservation water tank 60;The evaporation device of the mechanical refrigeration section module includes a water collecting tray 47 disposed at the bottom inside the right compartment 23 and near the No. 4 air inlet 21, a second guide pipe 48 having one end connected to the water collecting tray 47 and the other end connected to the first heat preservation water tank 29, an evaporator 49 disposed inside the right compartment 23 with its bottom connected to the top of the water collecting tray 47, an air outlet 50 disposed on the other side of the water collecting tray 47 at the bottom of the right compartment 23 and below the evaporator 49, an air supply pipe 51 having one end connected to the air outlet 50, and an expansion throttle valve 57 disposed at the input end of the evaporator 49; the condensation device of the mechanical refrigeration section module includes a compressor 52 disposed at the bottom inside the left compartment 22, a condenser 54 disposed inside the left compartment 22 and above the compressor 52, a first refrigerant connection pipe 53 having one end connected to the output end of the evaporator 49 and the other end connected to the input end of the compressor 52, a first refrigerant connection pipe 56 having one end connected to the output end of the compressor 52 and the other end connected to the input end of the condenser 54, the output end of the condenser 54 directly communicating with the right compartment 23 and connected to the expansion throttle valve 57 inside the right compartment 23, a fifth fan 55 disposed at the top of the left compartment 22 and above the condenser 54, and a second grille 58 disposed at the bottom of the left compartment 22.;

[0028] The usage state of the present invention is: Example

[0029] As Figure 1 shown, a modular dual-cooling-source data center cooling system combined with fresh air mainly consists of a fresh air treatment section, a mixing section, a water evaporation refrigeration section, and a mechanical refrigeration section. Each section module can be separately fabricated and then combined, or can be fabricated integrally.

[0030] As Figure 1 , 2, 3 shown, when the system starts to work, the first fan 10 in the mixing section module is turned on to draw air from the external environment. The external air flow (fresh air) a1 first slowly passes through the first air valve 4 and enters the self-cleaning filter device. After most of the dust is separated here, it then passes through the chemical filter 5 and the medium-efficiency physical filter 6. The fresh air flow is purified and becomes a clean air flow a2 that comes out from the first air outlet 3 of the fresh air treatment section and then enters the mixing section.

[0031] In the self-cleaning filter device, the dust separated from the air flow a1 is discharged outward through the third fan 28.

[0032] In the chemical filter 5, the harmful gases in the air flow react with the impregnating material in the chemical filter 5 to generate non-toxic and harmless gases, and then enter the medium-efficiency physical filter 6. Here, the small particulate dust in the air flow is blocked by the filter again and is retained on the medium-efficiency physical filter 6. When the air resistance reaches the set value, the medium-efficiency physical filter 6 needs to be replaced.

[0033] As Figure 1, as shown in Figures 2 and 3, the clean air stream a2 exits from the first air outlet 3 of the fresh air treatment section module and enters the air mixing section module. After mixing with the indoor return air stream b2 from the second air valve 13 of the return air outlet 12, it is drawn by the first fan 10. Sent out by the first fan 10, it passes through the high-efficiency physical filter 11 and becomes a clean positive pressure air stream c1, and then enters the water evaporation refrigeration section.

[0034] As Figure 3 shown, the air b1 that comes out of the room and enters the return air duct 14, a part b3 passes through the third air valve 16 and is extracted by the second fan 15 and discharged to the outside. Another part b2 passes through the second air valve 13 and enters the air mixing section, mixes with the air stream a2 from the first air outlet 3 of the fresh air treatment section module, and is inhaled by the first fan 10.

[0035] As Figure 1 , as shown in Figures 3 and 4, the air stream c1 exits from the second air outlet 9 of the air mixing and treatment section module, passes through the third air inlet 18 of the water evaporation refrigeration section module, and then enters the inner side of the aluminum tube 31 of the heat exchanger 30 in the water evaporation refrigeration section module, and exchanges heat with the secondary air d2 cooled by evaporation. After the temperature is reduced, it enters the humidifier 37, making the relatively dry air stream humidified to an appropriate humidity (if wet film (38) humidification is used, the temperature can also be reduced), and becomes the C2 air stream flowing out from the third air outlet (19) of the water evaporation refrigeration section module, and then enters the evaporation section of the mechanical refrigeration section module.

[0036] As Figure 4 shown, after the machine starts, the fourth fan 35 and the circulating water pump 32 start simultaneously. The secondary air (outdoor environment air) d1 is inhaled from the first grille 44, contacts the water sprayed down from the first spray head outside the aluminum tube 31. Due to the dry outdoor environment air, a large amount of water evaporates and absorbs heat, and the sensible heat of the d1 air is converted into latent heat, becoming the lower temperature secondary air d2. The secondary air d2 exchanges heat with the C1 air stream coming from the mixing section through the aluminum tube 31. After the heat exchange, it becomes the secondary air d3 and is discharged to the outside from the discharge port of the fourth fan 35.

[0037] As Figure 4 shown, after the machine starts, the fourth fan 35 and the circulating water pump 32 start simultaneously. The circulating water pump 32 pumps water from the heat preservation water tank 29 and transports it to the sprayer 34 through the first water delivery pipe 33. After the water is sprayed out by the sprayer 34, a part of the secondary dry air d1 contacts and evaporates into water vapor, becoming the lower temperature wet air d2, exchanges heat with the air stream C1 in the aluminum tube 31 and becomes d3, and is discharged to the outside by the fourth fan 35. Another part of the unevaporated water returns to the heat preservation water tank 29 by gravity, and so on in a cycle.

[0038] As Figure 4As shown, when the water in the heat preservation water tank 29 is less than the set value due to evaporation, the first electromagnetic valve 42 opens to replenish water to the heat preservation water tank 29. It closes when the water level reaches the highest level of the water tank to stop water replenishment. After a period of time, when the water tank needs to be cleaned, the waste water is discharged from the first sewage outlet 45.

[0039] As Figure 4 shown, the humidification part (humidifier 37) of the water evaporation and refrigeration section is used in dry winter, which is an optional function and is generally not used in summer.

[0040] As Figure 4 shown, when the humidifier 37 needs to work, (only the humidification process of the wet film 38 is described below, and the processes of other humidification methods will not be elaborated) the second circulating water pump 61 in the humidifier 37 starts. The water is sent to the second sprayer 40 through the second water delivery pipe 39. The water flows downward by gravity. Part of the water is quickly and evenly distributed on the entire wet film 38 due to the water absorption of the wet film 38, and then contacts the dry air flow coming out of the aluminum pipe 31 of the heat exchanger 30. The water evaporates when it meets the dry air, and the dry air flow turns into the qualified wet air C2, which enters the evaporation section of the mechanical refrigeration section from the third air outlet 19. Another part of the water returns to the second heat preservation water tank 60 by gravity and circulates like this.

[0041] As Figure 4 shown, when the water in the second heat preservation water tank 60 is less than the set value due to evaporation, the second electromagnetic valve 43 opens to replenish water into the second heat preservation water tank 60. It closes when the water level reaches the highest level of the second heat preservation water tank 60 to stop water replenishment. After a period of time, when the second heat preservation water tank 60 needs to be cleaned, the waste water is discharged from the second sewage outlet 46.

[0042] As Figure 1 , as shown in Figures 4 and 5, after the air flow C2 comes out of the third air outlet 19 of the water evaporation and refrigeration section module, it passes through the fourth air inlet 21 of the evaporation section of the mechanical refrigeration section module, and then enters the evaporator 49 of the mechanical refrigeration section module. It exchanges heat with the refrigerant in the evaporator 49 to become the low-temperature air flow C3, which is sent to the cabinet room of the data center through the air supply pipe 51.

[0043] As Figure 1 , as shown in Figures 4 and 5, the condensed water generated during the heat exchange process in the evaporator 49 is collected in the water collecting tray 47 by its own weight, and then flows into the heat preservation water tank 29 in the water evaporation and refrigeration section through the second diversion pipe 48 due to the water level difference.

[0044] As Figure 5As shown in the figure, when the unit needs the mechanical refrigeration section to work, the compressor 52 and the condensing fan 55 are started simultaneously. The gaseous refrigerant is compressed by the compressor 52 to become a high-temperature and high-pressure gas, and is sent to the condenser 54 through the second refrigerant connecting pipe 56. Here, it exchanges heat with the external ambient air e1 and becomes a low-temperature and high-pressure liquid. Then, it flows through the partition between the condensing section and the evaporating section and reaches the expansion throttling device 57 in the evaporating section. After passing through the expansion throttling device 57, the refrigerant becomes a low-temperature and low-pressure liquid, and then flows into the evaporator 49 to evaporate and absorb heat, becoming a low-temperature and low-pressure gas, and returns to the compressor 52, thus cycling.

[0045] As Figure 5 shown in the figure, when the unit needs the mechanical refrigeration section module to work, the compressor 52 and the condensing fan 55 are started simultaneously. The external ambient air e1 enters through the second grille 58 of the mechanical refrigeration section module, reaches the condenser 54, and exchanges heat with the high-temperature and high-pressure gaseous refrigerant flowing through the condenser 54. After heat exchange, it becomes high-temperature air and is discharged to the outside by the fifth fan 55.

[0046] Each module can be separately manufactured and then combined, or can be integrally manufactured; the fan can be a volute centrifugal fan or a non-volute centrifugal fan; the chemical filter can be made of impregnated activated carbon particles, or can be composed of honeycomb carbon or ceramic filter materials. The medium-efficiency filter can be a plate filter or a bag filter; the high-efficiency filter can be a plate filter or a bag filter, and the filtration grade is selected according to the needs of the data center; the air intake before the fresh air and return air section is under negative pressure, and the air supply is under positive pressure after air mixing to ensure that the treated air is not affected by the outside; the condensed water generated in the evaporating section is sent to the indirect evaporation water tank by gravity through the pipeline, reducing the temperature of the water in the tank, achieving energy conservation and reducing water discharge; the condensing section can be integrally connected to the unit according to needs or can be separately connected to achieve free connection.

[0047] The present invention also has various implementation manners, such as changes in the humidification method, using only the mechanical refrigeration section, not using the water evaporation refrigeration section, etc. for combined changes; changes in the positions of the evaporator 49 and the condenser 54, etc. All technical solutions formed by equivalent transformations or equivalent changes such as changes in name, material, position, etc. for all modular combination dual-cooling source data center cooling solutions listed in the present invention are within the protection scope of the present invention.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A modular dual-cooling-source data center cooling system combined with fresh air, characterized in that, It includes a fresh air treatment section module, a mixing air section module, a water evaporation refrigeration section module, and a mechanical refrigeration section module; The fresh air treatment section module includes a fresh air treatment box, a first air inlet provided on one side of the fresh air treatment box, a first air outlet provided on the other side of the fresh air treatment box, a first air valve provided at the first air inlet, a self-cleaning filter device provided in the fresh air treatment box and near the first air inlet, a chemical filter provided in the fresh air treatment box and near the output end of the self-cleaning filter device, and a medium-efficiency physical filter provided in the fresh air treatment box and near the first air outlet; The mixing air section module includes a mixing air box, a second air inlet provided on one side of the mixing air box and matching with the first air outlet, a second air outlet provided on the other side of the mixing air box, a first fan provided in the mixing air box and near the second air inlet, a high-efficiency physical filter provided in the mixing air box on the other side of the first fan and near the second air outlet, a return air inlet provided on the top of the mixing air box and near the second air inlet, a second air valve provided at the return air inlet, a return air duct with one end connected to the return air inlet, a second fan provided at the top of the other end of the return air duct, a third air valve provided at the second fan. The air coming out of the room and entering the return air duct, part of it passes through the third air valve, is extracted by the second fan and discharged to the outside, and the other part passes through the second air valve and enters the mixing air section to mix with the air flow from the fresh air treatment section module; The water evaporation refrigeration section module includes a water evaporation refrigeration box, a third air inlet provided on one side of the water evaporation refrigeration box and matching with the second air outlet, a third air outlet provided on the other side of the water evaporation refrigeration box, and a water evaporation refrigeration system provided in the water evaporation refrigeration box and between the third air inlet and the third air outlet; The mechanical refrigeration section module includes a mechanical refrigeration box, a fourth air inlet provided on one side of the mechanical refrigeration box and matching with the third air outlet, a left compartment and a right compartment provided in the mechanical refrigeration box, an evaporation device provided in the right compartment and near the fourth air inlet, and a condensation device provided in the left compartment and on the other side of the evaporation device. The evaporation device includes a water collecting tray provided at the bottom of the right compartment and near the fourth air inlet, and a second diversion pipe with one end connected to the water collecting tray and one end connected to the first heat preservation water tank; The self-cleaning filter device includes a ventilation duct with one end connected to the first air inlet and the other end near the input end of the chemical filter, a dust collection box provided in the ventilation duct and with an opening facing the input end of the ventilation duct, two groups of bending blades provided in the ventilation duct and with the tail connected to the relative position of the input of the dust collection box and inclined inward, a tortuous air flow path defined between adjacent bending blades, a guide plate provided between the two groups of bending blades, and a third fan with the input end connected to the output end of the dust collection box and the output end passing through the ventilation duct; The water evaporation refrigeration system includes a first heat preservation water tank disposed at the inner bottom of the water evaporation refrigeration box and near the third air inlet end, a heat exchanger disposed in the water evaporation refrigeration box and on top of the first heat preservation water tank, an aluminum pipe disposed on the heat exchanger, a first circulating water pump disposed in the water evaporation refrigeration box and with its input end connected to the first heat preservation water tank, a first water delivery pipe with one end connected to the output end of the first circulating water pump and the other end located above the heat exchanger, a plurality of first sprayers disposed on the lower surface of the first water delivery pipe and above the heat exchanger, a fourth blower disposed on the top of the water evaporation refrigeration box and above the first water delivery pipe, a water tank support frame disposed at the inner bottom of the water evaporation refrigeration box and on one side of the first heat preservation water tank, a second heat preservation water tank disposed on the water tank support frame, a humidifier disposed on the second heat preservation water tank, a wet film disposed on the second heat preservation water tank, a second sprayer disposed on the wet film, a second circulating water pump disposed in the second heat preservation water tank, a second water delivery pipe with one end connected to the second circulating water pump and the other end connected to the second sprayer, a first diversion pipe with one end connected to the first heat preservation water tank and the other end connected to the second heat preservation water tank, a first solenoid valve disposed on the first diversion pipe and near the first heat preservation water tank, a first solenoid valve disposed on the first diversion pipe and near the second heat preservation water tank, and first grilles disposed on both sides of the first heat preservation water tank in the water evaporation refrigeration box.

2. The modular dual-cooling-source data center cooling system combined with fresh air according to claim 1, wherein The bent blades are connected to the dust collection box and arranged in a V-shaped structure.

3. The modular dual-cooling-source data center cooling system combined with fresh air according to claim 1, characterized in that, The input end of the tortuous air flow channel is opposite to the input end direction of the ventilation duct.

4. A modular dual-cooling-source data center cooling system combined with fresh air according to claim 1, characterized in that, The bending angle of the bent blades is 60 degrees to 150 degrees.

5. A modular dual-cooling-source data center cooling system combined with fresh air according to claim 1, characterized in that A first sewage discharge port is provided on the first heat preservation water tank, and a second sewage discharge port is provided on the second heat preservation water tank.

6. The modular dual-cooling-source data center cooling system combined with fresh air according to claim 1, wherein For the evaporation device of the mechanical refrigeration section module, it further includes an evaporator disposed in the right compartment and with its bottom connected to the top of the water collecting tray, an air supply port disposed on the other side of the water collecting tray at the bottom of the right compartment and below the evaporator, an air supply duct with one end connected to the air supply port, and an expansion throttle valve disposed at the input end of the evaporator.

7. A modular dual-cooling-source data center cooling system combined with fresh air according to claim 1, characterized in that For the condensation device of the mechanical refrigeration section module, it includes a compressor disposed at the inner bottom of the left compartment, a condenser disposed in the left compartment and above the compressor, a first refrigerant connection pipe with one end connected to the output end of the evaporator and the other end connected to the input end of the compressor, a second refrigerant connection pipe with one end connected to the output end of the compressor and the other end connected to the input end of the condenser, the output end of the condenser directly communicating with the right compartment and connected to the expansion throttle valve in the right compartment, a fifth blower disposed on the top of the left compartment and above the condenser, and a second grille disposed at the bottom of the left compartment.

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