Solution dehumidification evaporation cooling-water machine for liquid cooling data center

Abstract

The invention relates to a solution dehumidification evaporation cooling-water machine for a liquid cooling data center, which comprises an air filtering unit, a solution dehumidification unit, an evaporation cooling unit, a solution concentration regeneration unit, a heat exchange unit and an air supply unit, and is characterized in that the air filtering unit is used for filtering external air; the solution dehumidification unit is used for carrying out dehumidification treatment on ambient air in a solution dehumidification mode; the evaporative cooling unit is used for cooling the internal thermal circulating water to obtain cold water; the air supply unit is used for discharging air entering the air supply unit, and the solution concentration and regeneration unit is used for evaporating and concentrating the dehumidification solution with reduced concentration and then recycling the dehumidification solution; the heat exchange unit is used for carrying out secondary heat exchange cooling on external hot water by utilizing cold water obtained by the evaporative cooling unit; high-temperature cooling return water of the liquid cooling data center is used as heat to evaporate and concentrate a diluted solution, and then low-temperature cooling water generated by indirect evaporation of a cooling-water machine is used for carrying out secondary heat exchange on the high-temperature cooling water, so that the temperature requirement of cooling is met.

Description

Technical Field

[0001] This invention relates to the field of evaporative cooling and heat exchange technology, specifically to a solution dehumidification evaporative chiller for liquid-cooled data centers. Background Technology

[0002] Solution-based dehumidification first dehumidifies the air, lowering its dew point temperature, and then evaporates and cools the circulating water in the air conditioning system to obtain chilled water at the desired temperature, which is then delivered to external terminals. Current research on this type of equipment focuses on the air side, typically directly cooling the air before introducing it into the room. The concentration and reduction of the dehumidifying solution requires external heat. Conventional solution-based dehumidification utilizes solar energy, heat pumps, etc., to provide heat, resulting in a more complex system structure, increased chiller size, and sometimes high energy consumption. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, the present invention aims to provide a solution dehumidification evaporative chiller for liquid-cooled data centers. This chiller is used in conjunction with a liquid-cooled data center, utilizing the high-temperature cooling return water as heat to evaporate and concentrate the diluted solution. While the solution absorbs heat, it also performs an initial heat exchange with the high-temperature cooling return water. Then, the low-temperature cooling water generated by the indirect evaporation of the chiller performs a secondary heat exchange with the high-temperature cooling water, achieving the required cooling temperature. Simultaneously, it allows for independent circulation of the coolant at the user end and the supply end, ensuring the stability and cleanliness of the coolant.

[0004] The technical solutions of the embodiments of the present invention are as follows:

[0005] A solution-based dehumidifying evaporative chiller for liquid-cooled data centers includes an air filtration unit, a solution dehumidification unit, an evaporative cooling unit, a solution concentration and regeneration unit, a heat exchange unit, and an air supply unit. The air filtration unit filters air entering the chiller. The solution dehumidification unit dehumidifies the ambient air entering the chiller using a solution dehumidification method. The evaporative cooling unit uses the dehumidified air to cool the internal hot circulating water using evaporative cooling to obtain chilled water. The air supply unit exhausts air from the chiller. The solution concentration and regeneration unit uses endothermic evaporation to concentrate the dehumidified solution (reduced in concentration after air dehumidification) for further dehumidification and recycling. The heat exchange unit uses the chilled water from the evaporative cooling unit to perform secondary heat exchange and cooling on external hot water that has undergone initial heat exchange and cooling in the solution concentration and regeneration unit.

[0006] The air filtration unit is located at the air inlet of the solution dehumidification evaporative chiller, and the air supply unit is located at the air outlet of the solution dehumidification evaporative chiller. The liquid outlet of the solution dehumidification unit is connected to the liquid inlet of the solution concentration and regeneration unit via a pipe. The liquid outlet of the solution concentration and regeneration unit is connected to the liquid inlet of the solution dehumidification unit via a pipe. The water inlet of the solution concentration and regeneration unit is connected to the coolant return water network of the external liquid-cooled data center via a pipe. The water outlet of the solution concentration and regeneration unit is connected to the hot end inlet of the heat exchange unit via a pipe. The hot end outlet of the heat exchange unit is connected to the coolant supply water network of the external liquid-cooled data center via a pipe. The cold end inlet of the heat exchange unit is connected to the water outlet of the evaporative cooling unit via a pipe. The cold end outlet of the heat exchange unit is connected to the water inlet of the evaporative cooling unit via a pipe.

[0007] Preferably, the solution dehumidification unit includes a solution circulation pump, a solution distributor, a dehumidification packing structure, a collection tray, and a solution tank. The inlet of the solution circulation pump is connected to the solution tank via a pipe, and the outlet of the solution circulation pump is connected to the solution distributor via a pipe. The solution circulation pump delivers the dehumidification solution from the solution tank to the solution distributor. The dehumidification packing structure is located adjacent to the air inlet or air filter unit of the solution dehumidification evaporative chiller. The solution distributor is positioned above the dehumidification packing structure and is used to distribute the dehumidification solution onto the dehumidification packing structure. The collection tray is located below the dehumidification packing structure and is used to collect the dehumidification solution after the air has been dehumidified in the dehumidification packing structure. The solution tank is located below the collection tray, and the dehumidification solution in the collection tray flows into the dilution area of ​​the solution tank.

[0008] Preferably, the solution concentration and regeneration unit includes a solution transfer pump and a flooded evaporator. The flooded evaporator includes a shell, a heat exchange coil disposed inside the shell, and a water inlet / outlet device disposed outside the shell. The shell has a solution inlet, a solution outlet, and a gas outlet. The water inlet / outlet device has a high-temperature inlet, a high-temperature outlet, a secondary high-temperature inlet, and a secondary high-temperature outlet. The solution inlet is connected to the dilution zone of the solution tank via a pipe. The solution outlet is connected to the inlet of the solution transfer pump via a pipe. The outlet of the solution transfer pump is connected to the concentration zone of the solution tank via a pipe. The high-temperature inlet is connected to the coolant return water network of an external liquid-cooled data center via a pipe. The high-temperature outlet is connected to the inlet of the heat exchange coil. The outlet of the heat exchange coil is connected to the secondary high-temperature inlet. The secondary high-temperature outlet is connected to the hot end inlet of the heat exchange unit via a pipe.

[0009] Preferably, the heat exchange unit includes a plate heat exchanger and a cooling pump. The hot end inlet of the plate heat exchanger is connected to the secondary high-temperature outlet via a pipe. The hot end outlet of the plate heat exchanger is connected to the cooling liquid supply network of the external liquid-cooled data center via a pipe. The cold end inlet of the plate heat exchanger is connected to the outlet of the cooling pump via a pipe. The inlet of the cooling pump is connected to the outlet of the evaporative cooling unit via a pipe and to the inlet of the evaporative cooling unit via a pipe.

[0010] Preferably, the evaporative cooling unit includes an evaporative water distributor, evaporative packing, a water collection tray, and a water storage tank. The water storage tank is connected to the inlet of the cooling pump via a pipe. The evaporative water distributor is connected to the cold end outlet of the plate heat exchanger via a pipe. The evaporative packing is located below the solution water distributor, the water collection tray is located below the evaporative packing, and the water storage tank is located below the liquid collection tray.

[0011] Preferably, the system further includes a level and flow controller, which includes a level detection float and an electrically controlled throttle valve. The level detection float is located in the dilution zone of the solution tank. The inlet of the electrically controlled throttle valve is connected to the solution tank via a pipe, and the outlet of the electrically controlled throttle valve is connected to the solution inlet via a pipe. The control terminal of the throttle valve is electrically connected to the level detection float.

[0012] Preferably, it further includes a vacuum condensation unit, the gas inlet of which is connected to the gas outlet via a pipe, and the liquid outlet of which is connected to the water storage tank via a pipe. The vacuum condensation unit is used to condense the water vapor delivered by the flooded evaporator.

[0013] Preferably, the vacuum condensation unit includes a gas-liquid heat exchanger, a gas-liquid separator, and a vacuum pump. The gas inlet of the gas-liquid heat exchanger is connected to the gas outlet through a pipe, the liquid outlet of the gas-liquid heat exchanger is connected to the inlet of the gas-liquid separator through a pipe, the gas outlet of the gas-liquid separator is connected to the air inlet of the vacuum pump through a pipe, and the liquid outlet of the gas-liquid separator is connected to the water storage tank through a pipe.

[0014] Preferably, the air supply unit is a fan.

[0015] Compared with existing technologies, the advantages of this invention are as follows: it is used in conjunction with liquid-cooled data centers, utilizing the high-temperature cooling return water of the liquid-cooled data center as heat to evaporate and concentrate the diluted solution. While the solution absorbs heat, it also performs initial heat exchange on the high-temperature cooling return water. Then, the low-temperature cooling water generated by the indirect evaporation of the chiller performs secondary heat exchange on the high-temperature cooling water, achieving the required cooling temperature. At the same time, it enables the coolant to circulate independently at the user end and the supply end, ensuring the stability and cleanliness of the coolant. Attached Figure Description

[0016] Figure 1 This is a schematic diagram illustrating the structural principle of a solution dehumidification evaporative chiller for liquid-cooled data centers according to the present invention.

[0017] 10. Air filtration unit; 21. Solution circulation pump; 22. Solution distributor; 23. Dehumidifying packing structure; 24. Liquid collection tray; 25. Solution water tank; 31. Solution transfer pump; 32. Flooded evaporator; 34. Shell; 341. Solution inlet; 342. Solution outlet; 343. Gas outlet; 35. Heat exchange coil; 36. Water inlet and outlet device; 361. High-temperature water inlet; 362. High-temperature water outlet; 363. Sub-high-temperature water inlet; 364. Sub-high-temperature water outlet; 41. Plate heat exchanger; 42. Cooling pump; 51. Evaporation water distributor; 52. Evaporation packing; 53. Water collection tray; 54. Water storage tank; 61. Liquid level detection float; 62. Electrically controlled throttle valve; 71. Gas-liquid heat exchanger; 72. Gas-liquid separator; 73. Vacuum pump; 80. Air supply unit. Detailed Implementation

[0018] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0019] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0021] like Figure 1 As shown, Figure 1This is a schematic diagram illustrating the structural principle of a solution dehumidification evaporative chiller for a liquid-cooled data center according to the present invention. The solution dehumidification evaporative chiller for a liquid-cooled data center includes an air filtration unit 10, a solution dehumidification unit, an evaporative cooling unit, a solution concentration and regeneration unit, a heat exchange unit, and an air supply unit 80. The air filtration unit 10 filters the air entering the solution dehumidification evaporative chiller. The solution dehumidification unit dehumidifies the ambient air entering the solution dehumidification evaporative chiller using a solution dehumidification method. The evaporative cooling unit uses the dry air dehumidified by the solution dehumidification unit to cool the internal hot circulating water using evaporative cooling to obtain chilled water. The air supply unit 80 exhausts the air entering the solution dehumidification evaporative chiller. The solution concentration and regeneration unit uses endothermic evaporation to evaporate and concentrate the dehumidified solution after the air dehumidification treatment, and then recycles it. The heat exchange unit... The unit utilizes the cold water obtained from the evaporative cooling unit to perform secondary heat exchange and cooling on the external hot water that has undergone initial heat exchange and cooling in the solution concentration and regeneration unit. The air filtration unit 10 is located at the air inlet of the solution dehumidification evaporative chiller, and the air supply unit 80 is located at the air outlet of the solution dehumidification evaporative chiller. The liquid outlet of the solution dehumidification unit is connected to the liquid inlet of the solution concentration and regeneration unit via a pipe. The liquid outlet of the solution concentration and regeneration unit is connected to the liquid inlet of the solution dehumidification unit via a pipe. The water inlet of the solution concentration and regeneration unit is connected to the coolant return water network of the external liquid-cooled data center via a pipe. The water outlet of the solution concentration and regeneration unit is connected to the hot end inlet of the heat exchange unit via a pipe. The hot end outlet of the heat exchange unit is connected to the coolant supply water network of the external liquid-cooled data center via a pipe. The cold end inlet of the heat exchange unit is connected to the water outlet of the evaporative cooling unit via a pipe. The cold end outlet of the heat exchange unit is connected to the water inlet of the evaporative cooling unit via a pipe. In one embodiment, the air filtration unit 10 is an air filter or a structural component containing an air filter.

[0022] The chiller of this invention enhances the cooling capacity of its internal cooling module by converting humid air in the external environment into dry air, thereby producing cooler water at a lower temperature and improving the chiller's cooling efficiency. It is particularly suitable for heat exchange cooling of high-temperature coolants in data centers. During the cooling process of the coolant in the liquid cooling system of the computer room, the chiller itself fully utilizes the heat of the coolant to evaporate and concentrate the diluted solution, thus enabling the recycling of the dehumidifying solution. Moisturized air from the external environment is drawn into the chiller through the air supply unit. After passing through the air filter unit to remove impurities and dust, it reaches the cooling solution dehumidification unit. The dehumidification unit absorbs moisture from the clean air, turning it into dry air. The air then reaches the cooling evaporation unit for evaporative cooling. The coolant in the cooling unit evaporates; because the ambient air is dry, it evaporates more easily, increasing the evaporation efficiency. This results in coolant at a lower temperature, which is then transported to the heat exchange unit to exchange heat with the hotter coolant in the liquid cooling system. This coolant is cooled, completing the chiller's cooling function. The external air, after evaporation and heat exchange, becomes highly humid air and is finally discharged directly through the air supply unit. Meanwhile, the hotter coolant in the external liquid cooling system first passes through a solution concentration and regeneration unit to heat the diluted dehumidification solution. Water vapor in the diluted solution evaporates, increasing the concentration of the dehumidification solution, which is then circulated back to the dehumidification solution unit. The hotter coolant in the external liquid cooling system dissipates heat, lowering its temperature, and is then transported to the heat exchange unit to exchange heat with the cooler coolant in the evaporative cooling unit, becoming low-temperature coolant, which is then returned to the liquid cooling system network in the machine room.

[0023] Specifically, the solution dehumidification unit dehumidifies the air by comprising a solution circulation pump 21, a solution distributor 22, a dehumidification packing structure 23, a collection tray 24, and a solution tank 25. The inlet of the solution circulation pump 21 is connected to the solution tank 25 via a pipe, and the outlet of the solution circulation pump 25 is connected to the solution distributor 22 via a pipe. The solution circulation pump 22 delivers the dehumidifying solution from the solution tank 25 to the solution distributor 22. The dehumidification packing structure 23 is located adjacent to the solution dehumidification evaporator. An air inlet or air filter unit 10 is provided in the chiller. The solution distributor 22 is located above the dehumidifying packing structure 23. The solution distributor 22 is used to distribute the dehumidifying solution to the dehumidifying packing structure 23. The liquid collection tray 24 is located below the dehumidifying packing structure 23. The liquid collection tray 24 is used to collect the dehumidifying solution after the air has been dehumidified in the dehumidifying packing structure 23. The solution tank 25 is located below the liquid collection tray 24. The dehumidifying solution in the liquid collection tray 24 flows into the dilution area of ​​the solution tank 25.

[0024] In this paper, the dehumidifying solution can be any solution using existing dehumidification technologies, such as lithium bromide, lithium chloride, calcium chloride, diethylene glycol, triethylene glycol, tetraethylene glycol, dipropylene glycol, propylene glycol, glycerol, etc., as long as it is suitable for safe use in the concentration and dehydration unit. The concentrated dehumidifying solution is drawn from the concentration zone of the solution tank by a solution circulation pump and transported to the solution distribution pump. The solution distribution pump distributes the dehumidifying solution onto the dehumidifying packing structure. External air passes through the dehumidifying packing structure, where the solution absorbs moisture from the air. After absorbing moisture, the concentrated dehumidifying solution becomes a low-concentration solution, which flows and collects in a collection tray, and is finally stored in the dilution zone of the solution tank.

[0025] Specifically, regarding how the solution concentration and regeneration unit concentrates and recycles the diluted dehumidifying solution, the solution concentration and regeneration unit includes a solution transfer pump 31 and a flooded evaporator 32. The flooded evaporator includes a shell 34, a heat exchange coil 35 located inside the shell 34, and a water inlet / outlet device 36 located outside the shell. The shell 34 has a solution inlet 341, a solution outlet 342, and a gas outlet 343. The water inlet / outlet device 36 has a high-temperature inlet 361, a high-temperature outlet 362, a secondary high-temperature inlet 363, and a secondary high-temperature outlet 364. 41 is connected to the dilution zone of the solution tank 25 via a pipe; the solution outlet 342 is connected to the inlet of the solution transfer pump 31 via a pipe; the outlet of the solution transfer pump 31 is connected to the concentration zone of the solution tank 25 via a pipe; the high-temperature inlet 361 is connected to the coolant return water network of the external liquid-cooled data center via a pipe; the high-temperature outlet 362 is connected to the inlet of the heat exchange coil 35; the outlet of the heat exchange coil 35 is connected to the secondary high-temperature inlet 363; and the secondary high-temperature outlet 364 is connected to the hot end inlet of the heat exchange unit via a pipe.

[0026] The diluted dehumidifying solution enters the shell of the flooded evaporator through a pipe via the solution inlet. It exchanges heat with the high-temperature coolant in the heat exchange coils. The dehumidifying solution absorbs heat, causing water vapor to evaporate. This vapor is then transported from the gas outlet. After the water vapor evaporates, the concentration of the dehumidifying solution increases, and it flows out through the solution outlet. The solution is then pumped to the concentration zone of the storage tank by the solution transfer pump. The high-temperature coolant from the external computer room liquid cooling system enters through the high-temperature inlet of the inlet / outlet device. It then exchanges heat with the dehumidifying solution in the shell in the heat exchange coils from the high-temperature outlet, cooling down. After cooling, it enters the inlet / outlet device from the secondary high-temperature inlet and is then transported to the heat exchange unit from the secondary high-temperature outlet for secondary heat exchange and cooling.

[0027] Specifically, the heat exchange unit includes a plate heat exchanger 41 and a cooling pump 42. The hot end inlet of the plate heat exchanger 41 is connected to the secondary high temperature outlet 364 through a pipe. The hot end outlet of the plate heat exchanger 41 is connected to the cooling liquid supply network of the external liquid-cooled data center through a pipe. The cold end inlet of the plate heat exchanger 41 is connected to the outlet of the cooling pump 42 through a pipe. The inlet of the cooling pump 42 is connected to the outlet of the evaporative cooling unit through a pipe and to the inlet of the evaporative cooling unit through a pipe.

[0028] In the flooded evaporator, the coolant that is initially cooled is output from the secondary high-temperature outlet and sent to the hot end inlet of the plate heat exchanger. After secondary heat exchange with the cold cooling water at the cold end, it is output from the hot end outlet and sent to the liquid cooling system in the machine room. Meanwhile, the cold end of the plate heat exchanger is pumped by a cooling pump to draw low-temperature cooling water generated in the evaporative cooling unit and enters the plate heat exchanger through the cold end inlet. After heat exchange and temperature rise, it is sent to the evaporative cooling unit for natural cooling, and the cycle continues.

[0029] To achieve a lower temperature cooling water in the evaporative cooling unit, preferably, the evaporative cooling unit includes an evaporative water distributor 51, an evaporative packing material 52, a water collection tray 53, and a water storage tank 54. The water storage tank 54 is connected to the inlet of the cooling pump 42 via a pipe. The evaporative water distributor 51 is connected to the cold end outlet of the plate heat exchanger 41 via a pipe. The evaporative packing material 52 is located below the solution water distributor 51. The water collection tray 53 is located below the evaporative packing material 52. The water storage tank 54 is located below the liquid collection tray 53.

[0030] The high-temperature cooling water supplied from the plate heat exchanger is distributed onto the evaporation packing via the evaporation water distributor. It evaporates with the dry air dehumidified from the solution dehumidification unit. Due to the low humidity of the dry air, the high-temperature distributed water evaporates faster. The evaporation of the distributed water absorbs heat, and the remaining distributed water cools down and collects in the water collection tray, and is finally stored in the water storage tank.

[0031] To control the stability of the dehumidification solution circulation volume, preferably, a liquid level and flow controller is also included. The liquid level and flow controller includes a liquid level detection float 61 and an electrically controlled throttle valve 62. The detection float 61 is located in the dilution zone of the solution tank 25. The inlet end of the electrically controlled throttle valve 62 is connected to the solution tank 25 through a pipe, and the outlet end of the electrically controlled throttle valve 62 is connected to the solution inlet 342 through a pipe. The control end of the throttle valve 62 is electrically connected to the detection float 61.

[0032] The circulation rate of the dehumidifying solution is adjusted by controlling the liquid level in the solution tank, thereby maintaining a stable circulation rate. This invention uses a liquid level and flow controller to measure the flow rate of the solution tank and regulate the flow rate of the dehumidifying solution. The liquid level and flow controller includes a detection float and an electrically controlled throttle valve, located in the dilution zone of the solution tank. It detects the liquid level in the tank; when the level exceeds a set value, the detection float sends a signal to the electrically controlled throttle valve, which then adjusts the flow rate valve to control the flow of the dehumidifying solution to the flooded evaporator.

[0033] To recover and reuse the water vapor evaporated from the diluted dehumidification solution, preferably, a vacuum condensation unit is also included. The air inlet of the vacuum condensation unit is connected to the gas outlet through a pipe, and the liquid outlet of the vacuum condensation unit is connected to the water storage tank through a pipe. The vacuum condensation unit is used to condense the water vapor delivered by the flooded evaporator.

[0034] The water vapor from the flooded evaporator is transported to the vacuum condensation unit for condensation, where it is condensed into cooling water for recycling. The water vapor is then transported to the water storage tank for replenishment.

[0035] To achieve efficient condensation in the vacuum condensation unit, preferably, the vacuum condensation unit includes a gas-liquid heat exchanger 71, a gas-liquid separator 72, and a vacuum pump 73. The inlet of the gas-liquid heat exchanger 71 is connected to the gas outlet 343 via a pipe, the liquid outlet of the gas-liquid heat exchanger 71 is connected to the inlet of the gas-liquid separator 72 via a pipe, the outlet of the gas-liquid separator 72 is connected to the air inlet of the vacuum pump 73 via a pipe, and the liquid outlet of the gas-liquid separator 72 is connected to the water storage tank 54 via a pipe.

[0036] Water vapor is transported to a gas-liquid heat exchanger to exchange heat with the high-humidity air coming out of the evaporative cooling unit. Then, a vacuum pump is used to draw a vacuum to accelerate the condensation of the water vapor. Finally, the gas-liquid mixture is separated by a gas-liquid separator. The liquid is transported to a water storage tank, and the gas is extracted by a vacuum pump.

[0037] For the specific structure of the air supply unit, preferably, the air supply unit 80 is a fan.

[0038] Compared with existing technologies, the advantages of this invention are as follows: it is used in conjunction with liquid-cooled data centers, utilizing the high-temperature cooling return water of the liquid-cooled data center as heat to evaporate and concentrate the diluted solution. While the solution absorbs heat, it also performs initial heat exchange on the high-temperature cooling return water. Then, the low-temperature cooling water generated by the indirect evaporation of the chiller performs secondary heat exchange on the high-temperature cooling water, achieving the required cooling temperature. At the same time, it enables the coolant to circulate independently at the user end and the supply end, ensuring the stability and cleanliness of the coolant.

[0039] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] The above embodiments merely illustrate preferred implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention should be determined by the appended claims.

Claims

1. A solution dehumidification evaporative chiller for liquid-cooled data centers, characterized in that: the solution dehumidification evaporative chiller comprises an air filtration unit, a solution dehumidification unit, an evaporative cooling unit, a solution concentration and regeneration unit, a heat exchange unit, and an air supply unit, the air filtration unit is used to filter the air entering the interior of the solution dehumidification evaporative chiller from the outside; the solution dehumidification unit is used to dehumidify the ambient air entering the solution dehumidification evaporative chiller by solution dehumidification; the evaporative cooling unit uses dry air dehumidified by the solution dehumidification unit to cool the internal hot circulating water by evaporative cooling to obtain cold water; the air supply unit is used to discharge the air entering the interior of the solution dehumidification evaporative chiller, the solution concentration and regeneration unit uses the dehumidification solution with reduced concentration after air dehumidification treatment by heat absorption and evaporation to evaporate and concentrate, and then dehumidify and recycle; the heat exchange unit uses the cold water obtained by the evaporative cooling unit to perform secondary heat exchange and cooling on the external hot water that has been initially heat-exchanged and cooled by the solution concentration and regeneration unit; the air filtration unit is located at the air inlet of the solution dehumidification evaporative chiller, the air supply unit is located at the air outlet of the solution dehumidification evaporative chiller, the liquid outlet of the solution dehumidification unit is communicated with the liquid inlet of the solution concentration and regeneration unit through a pipeline, the liquid outlet of the solution concentration and regeneration unit is communicated with the liquid inlet of the solution dehumidification unit through a pipeline, the water inlet of the solution concentration and regeneration unit is communicated with the cooling liquid return pipe network of the external liquid-cooled data center through a pipeline, the water outlet of the solution concentration and regeneration unit is communicated with the hot end inlet of the heat exchange unit through a pipeline, the hot end outlet of the heat exchange unit is communicated with the cooling liquid supply pipe network of the external liquid-cooled data center through a pipeline, the cold end inlet of the heat exchange unit is communicated with the water outlet end of the evaporative cooling unit through a pipeline, and the cold end outlet of the heat exchange unit is communicated with the water inlet end of the evaporative cooling unit through a pipeline.

2. The solution dehumidification evaporative chiller for liquid-cooled data centers according to claim 1, characterized in that: the solution dehumidification unit comprises a solution circulating pump, a solution liquid distributor, a dehumidification filler structure, a liquid collecting tray, and a solution water tank, the liquid inlet of the solution circulating pump is communicated with the solution water tank through a pipeline, the liquid outlet of the solution circulating pump is communicated with the solution liquid distributor through a pipeline, the solution circulating pump delivers the dehumidification solution in the solution water tank to the solution liquid distributor, the dehumidification filler structure is arranged adjacent to the air inlet or the air filtration unit of the solution dehumidification evaporative chiller, the solution liquid distributor is arranged above the dehumidification filler structure, the solution liquid distributor is used to distribute the dehumidification solution to the dehumidification filler structure, the liquid collecting tray is located below the dehumidification filler structure, the liquid collecting tray is used to collect the dehumidification solution after air dehumidification treatment in the dehumidification filler structure, and the solution water tank is located below the liquid collecting tray, the dehumidification solution in the liquid collecting tray flows and stores into the dilution area of the solution water tank.

3. The solution dehumidification evaporative chiller for liquid-cooled data center according to claim 2, wherein: the solution concentration and regeneration unit comprises a solution delivery pump and a flooded evaporator, the flooded evaporator comprises a shell, a heat exchange coil arranged in the shell, and an inlet and outlet water device arranged outside the shell, the shell has a solution inlet, a solution outlet, and a gas outlet, the inlet and outlet water device has a high-temperature water inlet, a high-temperature water outlet, a sub-high-temperature water inlet, and a sub-high-temperature water outlet, the solution inlet is communicated with the dilution zone of the solution tank through a pipeline, the solution outlet is communicated with the water inlet end of the solution delivery pump through a pipeline, the water outlet end of the solution delivery pump is communicated with the concentration zone of the solution tank through a pipeline, the high-temperature water inlet is communicated with the cooling liquid return water pipe network of the external liquid-cooled data center through a pipeline, the high-temperature water outlet is communicated with the water inlet of the heat exchange coil, the water outlet of the heat exchange coil is communicated with the sub-high-temperature water inlet, and the sub-high-temperature water outlet is communicated with the hot end inlet of the heat exchange unit through a pipeline.

4. The solution dehumidification evaporative chiller for liquid-cooled data center according to claim 3, wherein: the heat exchange unit comprises a plate heat exchanger and a cooling pump, the hot end inlet of the plate heat exchanger is communicated with the sub-high-temperature water outlet through a pipeline, the hot end outlet of the plate heat exchanger is communicated with the cooling liquid water supply pipe network of the external liquid-cooled data center through a pipeline, the cold end inlet of the plate heat exchanger is communicated with the water outlet of the cooling pump through a pipeline, and the water inlet of the cooling pump is communicated with the water outlet end of the evaporative cooling unit through a pipeline.

5. The solution dehumidification evaporative chiller for liquid-cooled data center according to claim 4, wherein: the evaporative cooling unit comprises a steam distribution water device, an evaporative filler, a water collecting tray, and a water storage tank, the water storage tank is communicated with the water inlet of the cooling pump through a pipeline, the steam distribution water device is communicated with the cold end outlet of the plate heat exchanger through a pipeline, the evaporative filler is arranged below the steam distribution water device, the water collecting tray is arranged below the evaporative filler, and the water storage tank is arranged below the water collecting tray.

6. The solution dehumidification evaporative chiller for liquid-cooled data center according to claim 5, wherein: a liquid level flow controller is further included, the liquid level flow controller comprises a liquid level detection float ball and an electric control throttle valve, the detection float ball is arranged in the dilution zone of the solution tank, the liquid inlet end of the electric control throttle valve is communicated with the solution tank through a pipeline, the liquid outlet end of the electric control throttle valve is communicated with the solution inlet through a pipeline, and the control end of the control throttle valve is electrically connected with the detection float ball.

7. The solution dehumidification evaporative chiller for liquid-cooled data center according to claim 6, wherein: A vacuum condensing unit is further included, an air inlet end of the vacuum condensing unit is communicated with the gas outlet through a pipeline, and a liquid outlet end of the vacuum condensing unit is communicated with the water storage tank through a pipeline, and the vacuum condensing unit is used for condensing water vapor delivered by the flooded evaporator.

8. The solution dehumidification evaporative chiller for liquid-cooled data centers according to claim 7, wherein: The vacuum condensing unit comprises an air-liquid heat exchanger, an air-liquid separator and a vacuum pump, an air inlet end of the air-liquid heat exchanger is communicated with the gas outlet through a pipeline, a liquid outlet end of the air-liquid heat exchanger is communicated with an inlet of the air-liquid separator through a pipeline, an air outlet of the air-liquid separator is communicated with an air inlet of the vacuum pump through a pipeline, and a liquid outlet of the air-liquid separator is communicated with the water storage tank through a pipeline.

9. The solution dehumidification evaporative chiller for liquid-cooled data centers according to claim 8, wherein: The air supply unit is a fan.

Images