Solution dehumidification evaporative water chiller and solution dehumidification air conditioner

Abstract

The application relates to a solution dehumidification evaporative cold water machine and a solution dehumidification air conditioner, which comprise a solution dehumidification unit, an evaporative cooling unit and a solution concentration and regeneration unit. The solution dehumidification unit adopts a dehumidification solution to dehumidify the ambient air entering the solution dehumidification evaporative cold water machine. The evaporative cooling unit adopts an evaporative cooling mode to cool the circulating water of the air conditioner to obtain cold water. The solution concentration and regeneration unit concentrates the dehumidification solution with reduced concentration after the air dehumidification treatment of the solution dehumidification unit and then sends the dehumidification solution to the solution dehumidification unit for recycling. The solution concentration and regeneration unit repeatedly uses the dehumidification solution, realizes the solution dehumidification evaporative output cold water effect of the combination of the solution dehumidification and the indirect evaporative cooling, reduces the humidity of the entering air on one hand, thereby reducing the dew point and further indirectly improving the evaporative cooling effect; on the other hand, the dehumidification solution can be recycled, and the whole solution dehumidification evaporative cold water machine only needs to supplement the circulating water, so that the solution dehumidification evaporative cold water machine is convenient and easy to use and simple to maintain.

Description

Technical Field

[0001] This application relates to the field of evaporative cooling and heat and mass exchange, and in particular to a solution dehumidification evaporative chiller that combines solution dehumidification and indirect evaporative cooling, and a solution dehumidification air conditioner using the solution dehumidification evaporative chiller. Background Technology

[0002] Evaporative cooling is a natural cooling method that utilizes the dry air energy of ambient air. Among them, dew temperature type indirect evaporative cooling is a process in which heat and mass transfer is carried out by air and water in contact within a space of a heat exchanger that is isolated from each other, generating cold air and cold water. Then, the cold air and cold water are exchanged with the ambient air in another space of the heat exchanger through the heat exchanger wall, and then the cold air or cold water is obtained by direct evaporation on the surface of the packing.

[0003] For data center cooling needs, dew-point indirect evaporative cooling can meet the summer cooling requirements of data centers in arid regions such as Northwest China. However, in other regions, mechanical compression refrigeration is still required in summer to meet the temperature requirements of data center IT equipment. When the ambient air temperature and humidity are high, dehumidifying and drying the air can lower the dew point and reduce the outlet water temperature of the indirect evaporative cooling system. This allows for cooling of data center IT equipment using evaporative cooling in summer.

[0004] The air is first dehumidified using a dehumidifying solution to lower its dew point temperature, and then cooled by evaporation to obtain chilled water at the desired temperature. Current research and development of this type of equipment focuses on the air side. The dehumidifying solution is concentrated and reduced using solar energy or a heat pump. Because the concentration requires a high temperature, the thermal energy utilization efficiency is relatively low. The overall efficiency of the unit does not have a significant advantage over traditional air conditioning equipment, and the equipment is large with high investment and maintenance costs.

[0005] Solution dehumidification technology utilizes low-cost heat sources, including solar energy, heat pumps, and waste heat, to concentrate a dehumidifying solution, which is then used to dehumidify the air. The solution is then evaporated and cooled to obtain cold air or cold water. This technology represents the future direction of air conditioning development. Currently, the technology is not yet mature, and research is mainly focused on solar-powered air conditioners and heat pump solution dehumidification air conditioners. Because it can utilize waste heat, the prototypes developed in the early stages have higher energy efficiency than traditional air conditioners under the same working conditions. However, since these are products that directly treat the air, the equipment is bulky and has low processing capacity. Summary of the Invention

[0006] Therefore, it is necessary to provide a solution dehumidification evaporative chiller and a solution dehumidification air conditioner.

[0007] A solution dehumidification evaporative chiller includes a solution dehumidification unit, an evaporative cooling unit, and a solution concentration and regeneration unit;

[0008] The solution dehumidification unit is used to dehumidify the ambient air entering the solution dehumidification evaporative chiller using a dehumidification solution.

[0009] The evaporative cooling unit is used to cool the air conditioning circulating water by evaporative cooling to obtain cold water;

[0010] The solution concentration and regeneration unit is used to concentrate the dehumidification solution whose concentration has been reduced after the air dehumidification treatment by the solution dehumidification unit, and then send it back to the solution dehumidification unit for recycling.

[0011] The aforementioned solution dehumidification evaporative chiller reuses the dehumidification solution through a solution concentration and regeneration unit, achieving a combined solution dehumidification and indirect evaporative cooling effect by outputting chilled water. On the one hand, it reduces the humidity of the incoming air, thereby lowering the dew point and indirectly improving the evaporative cooling effect. On the other hand, the dehumidification solution can be recycled, and the entire solution dehumidification evaporative chiller only needs to be replenished with circulating water, making it convenient, easy to use, and simple to maintain. Furthermore, since it uses chilled water as the output cooling source, it has the advantage of a compact product structure and a significantly improved processing capacity.

[0012] Furthermore, in one embodiment, the solution dehumidification evaporative chiller further includes an air filtration unit for filtering the air entering the solution dehumidification evaporative chiller, i.e., ambient air.

[0013] Furthermore, in one embodiment, the solution dehumidification evaporative chiller further includes an air supply unit for supplying air that has been cooled by evaporation of circulating water.

[0014] In one embodiment, the solution dehumidification evaporative chiller further includes an air filtration 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; the air supply unit is used to deliver the air that passes through the air filtration unit, the solution dehumidification unit and the evaporative cooling unit in sequence.

[0015] In one embodiment, the solution dehumidification unit includes a solution circulation pump, a solution distributor, a dehumidification packing structure, a liquid collection tray, a solution water tank, and a gas-liquid heat exchanger.

[0016] The solution circulation pump is connected to the gas-liquid heat exchanger through an inlet pipe, and the gas-liquid heat exchanger is connected to the solution distributor through an outlet pipe. The inlet pipe is also connected to the solution tank and the solution circulation pump.

[0017] The dehumidifying packing structure is located adjacent to the air inlet or air filter unit of the solution dehumidifying evaporative chiller, and the solution distributor is located above the dehumidifying packing structure. The solution distributor is used to distribute the dehumidifying solution onto the dehumidifying packing structure.

[0018] The dehumidifying packing structure is positioned above the liquid collection tray, which is used to collect the dehumidifying solution after the air has been dehumidified by the dehumidifying packing structure and transport it to the solution tank.

[0019] In one embodiment, the evaporative cooling unit includes an air conditioning return water pipe, an air conditioning supply water pipe, an evaporative water distributor, an evaporative packing structure, a water collection tray, an air conditioning cooling water tank, and a water supply valve.

[0020] The air conditioner return water pipe is connected to the evaporator water distributor, and the air conditioner supply water pipe is connected to the air conditioner cooling water tank;

[0021] The evaporation packing structure is disposed between the dehumidification packing structure of the solution dehumidification unit and the gas-liquid heat exchanger. The evaporation water distributor is disposed above the evaporation packing structure and is used to distribute the air conditioning circulating water onto the evaporation packing structure.

[0022] The evaporation packing structure is located above the water collection tray. The water collection tray is used to collect the cold water flowing out of the evaporation packing structure and cooled by evaporation cooling with the air after passing through the solution dehumidification unit, and then transport it to the air conditioning cooling water tank.

[0023] The water supply valve is connected to the air conditioner cooling water tank and the external water pipe respectively, and is used to replenish the air conditioner circulating water.

[0024] In one embodiment, the solution concentration and regeneration unit includes a recovery pipeline, a regeneration pipeline, an evaporator, a vacuum pump, a condensation structure, a solution concentration circulation pump, and a condensate tank.

[0025] The two ends or inlet and outlet of the recovery pipe are respectively connected to the solution water tank of the solution dehumidification unit and the evaporator;

[0026] The regeneration pipeline is connected to the inlet pipeline of the solution dehumidification unit and the solution circulation pump, and is also connected to the solution concentration circulation pump and the evaporator;

[0027] The vacuum pump is connected to the evaporator and the condenser structure via a steam pipe and a three-way valve;

[0028] The heat exchange coil of the condensing structure is located in the inner cavity of the evaporator to contact the dehumidifying solution in the inner cavity. After some of the water in the dehumidifying solution evaporates, the resulting steam passes through the vacuum pump and partially enters the condensing structure. The resulting condensate flows into the condensate tank.

[0029] After losing some of the moisture, the dehumidifying solution in the inner cavity enters the inlet pipe through the regeneration pipe under the action of the solution concentration and circulation pump.

[0030] In one embodiment, the solution concentration and regeneration unit further includes a throttling valve, wherein the dehumidified solution in the solution tank after dehumidification of the air enters the evaporator after passing through the recovery pipe and the throttling valve; and / or;

[0031] The vacuum pump is a magnetic levitation vacuum pump or an air-suspended vacuum pump; and / or;

[0032] The solution dehumidification evaporative chiller also includes a support frame, and the evaporator is disposed on the support frame; and / or;

[0033] The solution dehumidification evaporative chiller also includes a control unit connected to the vacuum pump. The control unit is used to control the concentration of the dehumidification solution in the inner cavity and the solution tank by controlling the workload of the vacuum pump, thereby adjusting the humidity of the air after dehumidification treatment and controlling the temperature of the air conditioning circulating water in the air conditioning cooling water tank of the evaporative cooling unit.

[0034] In one embodiment, the control unit is also connected to the throttling valve. The control unit is configured to automatically open the throttling valve to deliver the dehumidifying solution from the solution tank into the evaporator when the dehumidifying solution in the solution tank accumulates to a predetermined position, and to automatically close the throttling valve when the dehumidifying solution in the solution tank is lower than the sensing level in the solution tank; and / or,

[0035] The control unit is also connected to the water supply valve of the evaporative cooling unit. The control unit is used to automatically open the water supply valve when the air conditioning circulating water in the air conditioning cooling water tank is lower than the water supply level in the air conditioning cooling water tank, and to automatically close the water supply valve when the air conditioning circulating water in the air conditioning cooling water tank is higher than a specific water level; and / or,

[0036] The control unit is also connected to the three-way valve, used to regulate the amount of steam entering the condensation structure by controlling the three-way valve installed on the steam pipe of the solution concentration and regeneration unit, thereby regulating the temperature of the dehumidification solution; and / or,

[0037] The control unit is also connected to the solution circulation pump, and is used to adjust the dehumidification capacity or cooling capacity of the solution dehumidification unit for the ambient air by controlling the flow rate of the dehumidification solution in the solution dehumidification unit; and / or,

[0038] The control unit is also connected to the air supply unit of the solution dehumidification evaporative chiller, for controlling the cooling capacity of the solution dehumidification evaporative chiller; and / or,

[0039] The control unit is also connected to the solution concentration circulation pump of the solution concentration and regeneration unit, and is used to control the flow rate of the evaporated dehumidification solution delivered to the solution dehumidification unit.

[0040] In one embodiment, the solution dehumidification evaporative chiller further includes an air filter unit, an air supply unit, and a housing;

[0041] The air supply unit, the gas-liquid heat exchanger, dehumidification packing structure, liquid collection tray and solution water tank of the solution dehumidification unit, and the evaporation packing structure, water collection tray and air conditioning cooling water tank of the evaporation cooling unit are all installed inside the housing.

[0042] The inlet and outlet pipes of the solution dehumidification unit are at least partially disposed within the housing;

[0043] The recovery pipe and the regeneration pipe of the solution concentration and regeneration unit, as well as the air conditioning return water pipe and the air conditioning supply water pipe of the evaporation cooling unit, are partially disposed inside the housing.

[0044] The air filter unit is located at the air inlet of the housing, and the air supply unit is located at the air outlet of the housing.

[0045] In one embodiment, the evaporative cooling unit operates in crossflow mode, the solution dehumidification unit operates in counterflow mode or crossflow mode, and the gas-liquid heat exchanger of the solution dehumidification unit operates in crossflow mode.

[0046] In one embodiment, a solution dehumidification air conditioner includes an air conditioning component and any one of the solution dehumidification evaporative chillers, wherein chilled water obtained by the evaporative cooling unit is delivered to the air conditioning component, and the evaporative cooling unit recovers water from the air conditioning component as the circulating water. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 This is a schematic diagram of an embodiment of the solution dehumidification evaporative chiller described in this application.

[0049] Figure 2 This is a schematic diagram of an embodiment of the solution concentration and regeneration unit described in this application.

[0050] Figure 3 This is a schematic diagram of an embodiment of the solution concentration and regeneration unit and support frame described in this application.

[0051] Figure 4 This is a schematic diagram of the structure of an embodiment of the solution dehumidification unit described in this application.

[0052] Figure 5 This is a schematic diagram of an embodiment of the evaporative cooling unit described in this application.

[0053] Figure 6 This is a schematic diagram of another embodiment of the solution dehumidification evaporative chiller described in this application.

[0054] Figure 7 This is a schematic diagram of another embodiment of the solution dehumidification evaporative chiller described in this application.

[0055] Figure 8 for Figure 7 A partial structural schematic diagram of the embodiment shown.

[0056] Figure 9 This is a schematic diagram of the evaporation packing structure of the evaporation cooling unit described in this application operating in crossflow mode.

[0057] Figure 10 This is a schematic diagram of the dehumidification packing structure of the solution dehumidification unit described in this application operating in crossflow mode.

[0058] Figure 11 This is a schematic diagram of the dehumidification packing structure of the solution dehumidification unit described in this application operating in counter-current mode.

[0059] Figure 12 This is a schematic diagram of the gas-liquid heat exchanger of the solution dehumidification unit described in this application operating in crossflow mode.

[0060] Figure label:

[0061] Air filtration unit 100, solution dehumidification unit 200, evaporative cooling unit 300, solution concentration and regeneration unit 400, air supply unit 500, housing 600, support frame 700, dehumidification solution 800, air conditioning circulating water 900, air inlet F1, air outlet F2, air inlet direction F3, water flow direction F4.

[0062] Liquid inlet pipe 210, liquid outlet pipe 220, solution circulation pump 230, solution distributor 240, dehumidifying packing structure 250, liquid collection tray 260, solution water tank 270, sensing position 271, detection element 272, wire 273, gas-liquid heat exchanger 280, liquid inlet end D1, liquid outlet end D2;

[0063] Air conditioning return water pipe 310, air conditioning supply water pipe 320, air conditioning cooling water circulation pump 330, evaporator water distributor 340, evaporator packing structure 350, water collection tray 360, air conditioning cooling water tank 370, water replenishment level 371, water replenishment valve 380, water inlet S1, water outlet S2.

[0064] Recovery pipe 410, regeneration pipe 420, throttle valve 430, evaporator 440, output end 441, inner cavity 442, vacuum pump 480, three-way valve 451, condensation structure 460, solution concentration circulation pump 470, demister 450, steam pipe 481, condensate tank 490, drain outlet 491. Detailed Implementation

[0065] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0066] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0067] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0068] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0069] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0070] This application discloses a solution dehumidification evaporative chiller, which includes some or all of the structures of the following embodiments; that is, the solution dehumidification evaporative chiller includes some or all of the following technical features. In one embodiment of this application, a solution dehumidification evaporative chiller includes a solution dehumidification unit, an evaporative cooling unit, and a solution concentration and regeneration unit; the solution dehumidification unit is used to dehumidify the ambient air entering the solution dehumidification evaporative chiller using a dehumidification solution; the evaporative cooling unit is used to cool the air conditioning circulating water using evaporative cooling to obtain chilled water; the solution concentration and regeneration unit is used to concentrate the dehumidification solution after the air dehumidification treatment by the solution dehumidification unit, and then send it back to the solution dehumidification unit for recycling. The aforementioned solution dehumidification evaporative chiller reuses the dehumidification solution through a solution concentration and regeneration unit, achieving a combined solution dehumidification and indirect evaporative cooling effect by outputting chilled water. On the one hand, it reduces the humidity of the incoming air, thereby lowering the dew point and indirectly improving the evaporative cooling effect. On the other hand, the dehumidification solution can be recycled, and the entire solution dehumidification evaporative chiller only needs to be replenished with circulating water, making it convenient, easy to use, and simple to maintain. Furthermore, since it uses chilled water as the output cooling source, it has the advantage of a compact product structure and a significantly improved processing capacity.

[0071] Furthermore, in one embodiment, the solution dehumidification evaporative chiller further includes an air filtration unit for filtering ambient air entering the solution dehumidification evaporative chiller. In one embodiment, a solution dehumidification evaporative chiller is as follows: Figure 1 As shown, it includes an air filtration unit 100, a solution dehumidification unit 200, an evaporative cooling unit 300, a solution concentration and regeneration unit 400, and an air supply unit 500. The air filtration unit 100 filters the air entering the solution dehumidification evaporative chiller. The solution dehumidification unit 200 dehumidifies the ambient air entering the solution dehumidification evaporative chiller using a solution dehumidification method. The evaporative cooling unit 300 cools the air conditioning circulating water 900 using evaporative cooling to obtain chilled water. The solution concentration and regeneration unit 400 concentrates the dehumidification solution 800 (after the air dehumidification treatment by the solution dehumidification unit 200) and then returns it to the solution dehumidification unit 200 for recycling. The air supply unit 500 delivers the air that has passed through the air filtration unit 100, the solution dehumidification unit 200, and the evaporative cooling unit 300 sequentially. The air supply unit 500 supplies air to the outside at the air outlet F2, allowing external air to enter the solution dehumidification evaporative chiller from the air inlet F1, pass through the air filter unit 100, and reach the solution dehumidification unit 200. In this embodiment, the solution dehumidification evaporative chiller also includes an air supply unit 500, which is used to deliver air cooled by evaporation from the air conditioning circulating water 900. In various embodiments, the air inlet F1 and the air outlet F2 can be integrated into the installation environment, or they can be set as separate structural components, or they can be integrated into other structures such as a housing. Further, in one embodiment, the solution dehumidification evaporative chiller also includes an air intake structure, which is used to send external air to the air filter unit 100, and through the air filter unit 100 into the solution dehumidification evaporative chiller, reaching the solution dehumidification unit 200. This design, in hot environments, helps to increase the amount of air entering the system. Combined with the dehumidification unit 200 and the solution concentration and regeneration unit 400, it helps to improve the evaporative cooling effect of the evaporative cooling unit 300. Especially for data centers, because the outlet air temperature is high when IT equipment is working, and because the available natural cooling source time is also longer, the solution dehumidification evaporative chiller can better exert its advantages when working in high-temperature areas, which is conducive to its use as a solution dehumidification air conditioner.

[0072] The air filtration unit 100 is used to filter the air entering it; that is, the air entering the solution dehumidification evaporative chiller is filtered by the air filtration unit 100. In one embodiment, the air filtration unit 100 is an air filter or a structural component including the air filter. In one embodiment, the solution dehumidification evaporative chiller further includes an air supply unit 500, which is used to deliver air after the air conditioning circulating water 900 has been cooled by evaporation. That is, the air supply unit 500 delivers the air after it has been cooled by evaporation of the air conditioning circulating water 900, or the air after the preparation of chilled water. Specifically, after the air conditioning circulating water 900 is cooled by evaporation to obtain chilled water and high-humidity air, the air supply unit 500 delivers the high-humidity air. In one embodiment, the air supply unit 500 is a fan or a structural component including the fan. The air supply unit 500, in conjunction with the air filter unit 100, helps to increase the amount of air entering the solution dehumidification evaporative chiller for dehumidification treatment at the solution dehumidification unit 200.

[0073] The solution dehumidification unit 200 is used to dehumidify the air filtered in the air filtration unit 100 using a dehumidification solution 800; that is, to dehumidify the filtered air entering the solution dehumidification evaporative chiller. In one embodiment, the dehumidification solution 800 can be a solution using existing solution dehumidification technology, 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 solution concentration and regeneration unit 400 for concentration and dehydration.

[0074] The evaporative cooling unit 300 uses air dehumidified by the solution dehumidification unit 200 to cool the air conditioning circulating water 900 by evaporation, obtaining cold water at the required temperature; that is, it evaporatively cools the air conditioning circulating water 900 to obtain cooling water for output, and uses the cooling water for external cooling; since the specific heat capacity of water is much greater than that of air, for example, under standard conditions, the specific heat capacity of water is 4200 joules per kilogram of degree Celsius, while the specific heat capacity of air is 1400 joules per kilogram of degree Celsius, the combination of heat dissipation and cooling by conduction has a better cooling effect than air conditioning.

[0075] The solution concentration and regeneration unit 400 is used to concentrate the dehumidification solution 800 after air dehumidification treatment and transport it to the solution dehumidification unit 200 for recycling. The solution concentration and regeneration unit 400 is the focus of this application. In the various embodiments of this application, the solution dehumidification evaporative chiller only needs to be replenished with air conditioning circulating water 900 during use. It is precisely due to the ingenious design of the solution concentration and regeneration unit 400 that the dehumidification solution 800 after air dehumidification treatment is concentrated, reducing its moisture content and restoring the concentration of the dehumidification solution 800. Moreover, this concentration is controllable, especially... The concentration of the dehumidifying solution 800 can be accurately controlled by a vacuum pump. Specifically, the concentration of the dehumidifying solution 800 can be controlled through the solution concentration and regeneration unit 400, thereby effectively dehumidifying and adjusting the relative humidity of the air, lowering the dew point, and ultimately improving the evaporative cooling effect. This controls the outlet temperature of the air conditioning circulating water 900 in the evaporative cooling unit 300. During this process, the dehumidifying solution can be recycled. The entire solution dehumidifying evaporative chiller only requires replenishment of circulating water, making it convenient, easy to use, and simple to maintain. It can be applied to various occasions requiring chilled water cooling, such as commercial buildings and data centers.

[0076] In one embodiment, the solution concentration and regeneration unit 400 is as follows: Figure 2 As shown, it includes a recovery pipe 410, a regeneration pipe 420, an evaporator 440, a vacuum pump 480, a condensing structure 460, a solution concentration circulation pump 470, and a condensate tank 490. In this embodiment, the vacuum pump 480 is located outside the evaporator 440. The solution concentration and regeneration unit 400 also includes a demister 450 connected to the vacuum pump 480. The demister 450 can be located inside or outside the evaporator 440. The demister 450, the vacuum pump 480, and the condensing structure 460 are sequentially connected via a steam pipe 481. In this embodiment, the demister 450 is located inside the evaporator 440. It is understood that the condensing structure 460, such as a condensing coil, and the demister 450 can both be components of the evaporator 440, that is, the evaporator 440 can include the condensing structure 460 and the demister 450. The vacuum pump 480 can be a turbine. The evaporator 440 includes a shell-and-tube heat exchanger and a plate heat exchanger. Figure 2 The image shows a flooded evaporator in a shell-and-tube heat exchanger. In practical applications, a falling film evaporator or a plate heat exchanger can also be used.

[0077] In this embodiment, the solution concentration and regeneration unit 400 further includes a three-way valve 451 disposed between the vacuum pump 480 and the condensation structure 460. The first end of the three-way valve 451 is connected to the vacuum pump 480, the second end is connected to the condensation structure 460, and the third end is connected to the condensate in the condensate tank 490. The solution dehumidification evaporative chiller or the solution concentration and regeneration unit 400 is used to control the dehumidification in the inner cavity 442 of the evaporator 440 by controlling the connection state of the three-way valve 451. The temperature and concentration of solution 800 are controlled as follows: when the inner cavity 442 is connected to the condensation structure 460 through the three-way valve 451, the evaporated water from the dehumidifying solution 800 enters the condensation structure 460; when the inner cavity 442 is connected to the outside air through the three-way valve 451, the evaporated water from the dehumidifying solution 800 enters the condensate tank 490; the wider the three-way valve 451 is opened, the more moisture is released into the condensate tank 490, and the lower the temperature of the dehumidifying solution 800. In one embodiment, the third end of the three-way valve 451 is directly connected to external air or a drainage pipe, so that the evaporated water from the dehumidifying solution 800 directly enters the external air or drainage pipe. Further, in one embodiment, in conjunction with an embodiment having a control module, the control module is connected to the three-way valve 451. By controlling the connection state and connection ratio of the three-way valve 451, the working load of the vacuum pump 480 is controlled, thereby controlling the concentration of the dehumidifying solution 800 in the inner cavity 442 and the solution tank 270. This allows for adjustment of the humidity of the air undergoing dehumidification based on the concentration of the dehumidifying solution 800, and finally, the outlet temperature of the air conditioning circulating water 900 in the air conditioning cooling water tank 370 is controlled by evaporation. Other embodiments follow the same principle and will not be elaborated further. In other embodiments, the control module may also be connected to the three-way valve 451 and the vacuum pump 480 respectively. For embodiments with a demister 450, the three-way valve 451 is positioned between the demister 450 and the condensation structure 460. With this design, since the concentration of the dehumidifying solution 800 is controllable, the relative humidity of the air inside the dehumidifying evaporative chiller is controllable, thereby reducing the dew point and improving the evaporative cooling effect. Therefore, the outlet water temperature of the air conditioning circulating water 900 in the air conditioning cooling water tank 370 can be adjusted.

[0078] Combination Figure 4In one embodiment, the solution dehumidification unit 200 includes a solution circulation pump 230, a solution distributor 240, a dehumidification packing structure 250, a liquid collection tray 260, a solution water tank 270, and a gas-liquid heat exchanger 280; the solution circulation pump 230 is connected to the gas-liquid heat exchanger 280 through an inlet pipe 210, and the gas-liquid heat exchanger 280 is connected to the solution distributor 240 through an outlet pipe 220; the inlet pipe 210 is also connected to the solution water tank 270 and the solution circulation pump 230; the dehumidification packing structure 250... The dehumidifying packing structure 250 is located adjacent to the air inlet or air filter unit 100 of the solution dehumidifying evaporative chiller. The solution distributor 240 is located above the dehumidifying packing structure 250 and is used to distribute the dehumidifying solution 800 onto the dehumidifying packing structure 250. The dehumidifying packing structure 250 is located above the liquid collection tray 260 and is used to collect the dehumidifying solution 800 after dehumidifying the air in the dehumidifying packing structure 250 and transport it to the solution water tank 270. In one embodiment, the recovery pipe 410 is connected to the solution tank 270 of the solution dehumidification unit 200 and the evaporator 440, respectively; that is, both ends or the inlet and outlet of the recovery pipe 410 are connected to the solution tank 270 of the solution dehumidification unit 200 and the evaporator 440, respectively. For example, one end of the recovery pipe 410 is connected to the solution tank 270 and the other end is connected to the evaporator 440. The regeneration pipe 420 is connected to the liquid inlet pipe 210 and the solution circulation pump 230 of the solution dehumidification unit 200, and also to the solution concentration circulation pump 470 and the evaporator 440. For example, the regeneration pipe 420, the solution circulation pump 230, and the liquid inlet pipe 210 of the solution dehumidification unit 200 are connected in sequence, and the regeneration pipe 420, the solution concentration circulation pump 470, and the evaporator 440 are connected in sequence. In this embodiment, the regeneration pipe 420 is connected to the output end 441 at the bottom of the evaporator 440. In one embodiment, the evaporative cooling unit 300 operates in crossflow mode, the solution dehumidification unit 200 operates in counterflow mode or crossflow mode, and the gas-liquid heat exchanger 280 of the solution dehumidification unit 200 operates in crossflow mode. In crossflow mode, the air inlet direction is perpendicular to the water flow direction; in counterflow mode, the air inlet direction is opposite to the water flow direction. In one embodiment, such as... Figure 9 As shown, the evaporation packing structure 350 of the evaporative cooling unit 300 operates in crossflow mode, with the water flow direction F4 perpendicular to the air inlet direction F3; in one embodiment, as... Figure 10 As shown, the dehumidification packing structure 250 of the solution dehumidification unit 200 operates in crossflow mode, with the water flow direction F4 perpendicular to the air inlet direction F3; in one embodiment, as... Figure 11As shown, the dehumidification packing structure 250 of the solution dehumidification unit 200 operates in counter-current mode, with the water flow direction F4 opposite to the air inlet direction F3; in one embodiment, as Figure 12 As shown, the gas-liquid heat exchanger 280 of the solution dehumidification unit 200 operates in crossflow mode, with the water flow direction F4 perpendicular to the air inlet direction F3. Other embodiments follow the same principle and will not be described in detail.

[0079] The vacuum pump 480 is disposed outside the inner cavity 442 of the evaporator 440, and the vacuum pump 480 is connected to the condensing structure 460 through a steam pipe 481; in one embodiment, the vacuum pump 480 is connected to the evaporator 440 and the condensing structure 460 through the steam pipe 481 and the three-way valve 451; in an embodiment with a demister 450, the demister 450 is sequentially connected to the vacuum pump 480 and the condensing structure 460 through the steam pipe 481; or, the demister 450 is sequentially connected to the vacuum pump 480, the three-way valve 451 and the condensing structure 460 through the steam pipe 481.

[0080] The condensing structure 460 is at least partially disposed within the inner cavity 442 of the evaporator 440 to contact the dehumidifying solution 800 within the evaporator 440. A portion of the moisture in the dehumidifying solution 800 enters the condensing structure 460 via the vacuum pump 480, and after cooling, enters the condensate tank 490. After losing some moisture, the dehumidifying solution 800 in the inner cavity 442 of the evaporator 440 enters the inlet pipe 210 via the regeneration pipe 420 under the action of the solution concentration circulation pump 470. In an embodiment with a demister 450, the moisture evaporated from the dehumidifying solution 800 in the inner cavity 442 sequentially enters the condensing structure 460 via the vacuum pump 480 and the demister 450. Further, the condensing structure 460 includes a condensing pipe, a condensing coil, and a condensing circuit. The function of the condensing structure 460 is to discharge a portion of the evaporated moisture from the dehumidifying solution 800. Furthermore, some of the moisture in the dehumidifying solution 800 enters the condensation structure 460 via the vacuum pump 480, and after cooling, enters the condensate tank 490. Simultaneously, this raises the temperature of the dehumidifying solution 800 within the evaporator 440. This design fully utilizes evaporation energy, allowing some of it to return to the evaporator 440 to heat the dehumidifying solution 800, avoiding energy waste and preventing an increase in the external ambient temperature. This helps raise the temperature of the dehumidifying solution 800, thereby enhancing its effect on reducing the relative humidity of the air. Moreover, as mentioned above, by removing some of the moisture from the dehumidifying solution 800 through evaporation, it is beneficial to control the concentration of the dehumidifying solution 800, thereby controlling, for example, the relative humidity of the air, and further controlling, for example, the dew point, ultimately improving the evaporative cooling effect.

[0081] Furthermore, the condensate tank 490 is provided with a drain outlet 491 for discharging condensate through the drain outlet 491. Furthermore, the drain outlet 491 is connected to the water supply valve 380 of the evaporative cooling unit 300 and the air conditioning cooling water tank 370 via a drain pipe, for conveying the discharged condensate to the air conditioning cooling water tank 370. With this design, under suitable air humidity (i.e., relative humidity) conditions, there is no need to drain externally; the condensate is directly conveyed to the air conditioning cooling water tank 370 for recycling. In other embodiments, when the air conditioning circulating water 900 in the air conditioning cooling water tank 370 is lower than the water supply level 371 in the air conditioning cooling water tank 370, the condensate is automatically conveyed to the air conditioning cooling water tank 370; when the air conditioning circulating water 900 in the air conditioning cooling water tank 370 is higher than a specific water level, the excess condensate is automatically discharged.

[0082] In one embodiment, such as Figure 2 As shown, the solution concentration and regeneration unit 400 further includes a throttling valve 430. The dehumidified solution 800, after dehumidification treatment of the air in the solution tank 270, enters the evaporator 440 after passing through the recovery pipe 410 and the throttling valve 430. In one embodiment, the vacuum pump 480 is a magnetic levitation vacuum pump or an air-suspended vacuum pump. The remaining embodiments follow the same principle and will not be described in detail. Compared to solar energy or heat pumps, which increase the concentration of the dehumidification solution 800 to remove some of the moisture, magnetic levitation vacuum pumps or air-levitation vacuum pumps have a higher energy efficiency ratio, reaching more than 10 times that of solar energy or heat pumps in the prototype. This facilitates seamless integration of dew point indirect evaporative cooling and solution dehumidification evaporative cooling, and allows for full utilization of natural cold sources when used in data centers.

[0083] In one embodiment, such as Figure 3 As shown, the solution dehumidification evaporative chiller also includes a support frame 700, on which the evaporator 440 is mounted. The support frame 700 can be made of stainless steel or aluminum alloy; for cost considerations, the support frame 700 can consist of only a few separately mounted support members. Using the support frame 700 allows the output end 441 of the evaporator 440 to be located at the bottom of the evaporator 440, facilitating the output of the concentrated and regenerated dehumidification solution 800.

[0084] In one embodiment, such as Figure 4 As shown, the solution dehumidification unit 200 includes an inlet pipe 210, an outlet pipe 220, a solution circulation pump 230, a solution distributor 240, a dehumidification packing structure 250, a collection tray 260, a solution tank 270, and a gas-liquid heat exchanger 280; the regeneration pipe 420, the inlet pipe 210, the gas-liquid heat exchanger 280, the outlet pipe 220, and the solution distributor 240 are sequentially connected, and the inlet pipe 210 is also connected to the solution tank 270 and the solution circulation pump 230; combined with Figure 2 The regeneration pipe 420 is connected to the inlet pipe 210 via the inlet end D1, and the solution tank 270 is connected to the recovery pipe 410 via the outlet end D2. In this embodiment, one end of the inlet pipe 210 is connected to the gas-liquid heat exchanger 280, and the other end of the inlet pipe 210 is connected to the inlet end D1 and the solution tank 270 via the solution circulation pump 230, for conveying the dehumidification solution 800 in the solution tank 270 to the gas-liquid heat exchanger 280 under the action of the solution circulation pump 230. In embodiments with the air supply unit 500, the gas-liquid heat exchanger 280 is disposed adjacent to the air supply unit 500.

[0085] The dehumidifying filler structure 250 is disposed adjacent to the air filter unit 100, that is, the dehumidifying filler structure 250 is located on the opposite side of the air intake direction of the air filter unit 100, so that the outside air is filtered by the air filter unit 100 and then dehumidified at the dehumidifying filler structure 250. The solution distributor 240 is disposed above the dehumidifying filler structure 250. The solution distributor 240 is used to distribute the dehumidifying solution 800 onto the dehumidifying filler structure 250, and can also apply the dehumidifying solution 800 by spraying or dripping; the dehumidifying effect of the dehumidifying solution 800 can refer to conventional technology, which is omitted here.

[0086] The dehumidifying packing structure 250 is disposed above the liquid collection tray 260. The liquid collection tray 260 is used to collect the dehumidifying solution 800 after the dehumidifying packing structure 250 has dehumidified the air, and transport it to the solution tank 270. At this time, the concentration of the dehumidifying solution 800 decreases due to the absorption of moisture. If the concentration continues to decrease to a certain level, the moisture absorption capacity of the air will decrease. Therefore, when the concentration decreases, for example, below a certain threshold, the solution concentration and regeneration unit 400 is used to concentrate the dehumidifying solution 800 after the air dehumidification treatment, remove its moisture, and regenerate it so that it can be reused.

[0087] In this embodiment, the solution dehumidification unit 200 further includes a solution circulation pump 230, which is connected to the inlet pipe 210 to pump the dehumidification solution 800 into the inlet pipe 210 and deliver it to the gas-liquid heat exchanger 280, the outlet pipe 220, and the solution distributor 240. Furthermore, the inlet pipe 210 is also connected to the solution tank 270. Thus, when the concentration of the dehumidification solution 800 does not decrease significantly and can be reused, such as when the ambient air humidity is low, the solution circulation pump 230 directly pumps the dehumidification solution 800 from the solution tank 270 into the inlet pipe 210 and the gas-liquid heat exchanger 280, etc., eliminating the need for the solution concentration and regeneration unit 400 to operate, thereby saving energy.

[0088] Furthermore, in one embodiment, the solution tank 270 is provided with a sensing position 271, and the throttle valve 430 is also used to automatically close when the dehumidification solution 800 in the solution tank 270 is below the sensing position 271. Further, combined with... Figure 4 and Figure 6 The throttling valve 430 is also connected via a wire 273 to a detection element 272 in the solution tank 270. This detection element automatically opens when the dehumidifying solution 800 in the solution tank 270 accumulates to a predetermined level, thereby delivering the dehumidifying solution 800 from the solution tank 270 into the evaporator 440. In one embodiment, the detection element 272 is implemented using a resistance sensor. This design helps prevent the solution tank 270 from overflowing, thus ensuring the safe use of the solution tank 270.

[0089] In one embodiment, such as Figure 5As shown, the evaporative cooling unit 300 includes an air conditioning return water pipe 310, an air conditioning supply water pipe 320, an evaporative water distributor 340, an evaporative packing structure 350, a water collection tray 360, an air conditioning cooling water tank 370, and a water supply valve 380. The air conditioning return water pipe 310 is connected to the evaporative water distributor 340, and the air conditioning supply water pipe 320 is connected to the air conditioning cooling water tank 370. The evaporative packing structure 350 is disposed between the dehumidification packing structure 250 and the gas-liquid heat exchanger 280 and is located in the air after dehumidification treatment. The evaporative water distributor 340 is disposed above the evaporative packing structure 350. The evaporative water distributor 340 is used to distribute the air conditioning circulating water 900 onto the evaporative packing structure 350, and can also apply the air conditioning circulating water 900 by spraying or dripping. The application methods include, but are not limited to, dripping, slow flow, and spraying. In this embodiment, the evaporative cooling unit 300 further includes an air conditioning cooling water circulation pump 330. The air conditioning return water pipe 310 is connected to the evaporative water distributor 340 through the air conditioning cooling water circulation pump 330. The air conditioning cooling water circulation pump 330 is used to pump used cold water into the evaporative water distributor 340 through the air conditioning return water pipe 310 for reuse as circulating water. The air conditioning return water pipe 310 is provided with an inlet S1 to connect to an external water inlet pipe, and the air conditioning water supply pipe 320 is provided with an outlet S2 to connect to an external water outlet pipe.

[0090] The evaporation packing structure 350 is located above the water collection tray 360. The water collection tray 360 is used to collect the cold water from the evaporation packing structure 350 after the air has been cooled by evaporation with the dehumidified air. Specifically, it collects the cold water flowing out of the evaporation packing structure 350 after the air has been cooled by evaporation with the air after passing through the solution dehumidification unit 200, and then transports it to the air conditioning cooling water tank 370. In other words, the air conditioning circulating water 900 is used in conjunction with the dehumidified air to cool the circulating water by evaporation, resulting in cold water, which is then transported to the air conditioning cooling water tank 370. The water replenishment valve 380 is connected to both the air conditioning cooling water tank 370 and an external water pipe, and is used to replenish the air conditioning circulating water 900. Replenishing the air conditioning circulating water 900 is necessary due to evaporation losses. Furthermore, the air conditioning cooling water tank 370 is provided with a water replenishment level 371, and the water replenishment valve 380 is also used to automatically open when the air conditioning circulating water 900 in the air conditioning cooling water tank 370 is lower than the water replenishment level 371; the automatic opening includes automatically opening for a specific duration and automatically opening until the air conditioning circulating water 900 in the air conditioning cooling water tank 370 is higher than a specific water level. This design facilitates automatic water replenishment and avoids wasting manpower.

[0091] Furthermore, in one embodiment, such as Figure 6As shown, the evaporation packing structure 350 is disposed adjacent to the dehumidification packing structure 250; the evaporation packing structure 350 is disposed between the gas-liquid heat exchanger 280 and the dehumidification packing structure 250, and the air supply unit 500 is disposed adjacent to the gas-liquid heat exchanger 280. This design is beneficial for utilizing the high-temperature dehumidification solution 800 to create a higher-temperature air environment, thereby improving the evaporation effect of the evaporation packing structure 350.

[0092] In one embodiment, such as Figure 7 As shown, the solution dehumidification evaporative chiller also includes a housing 600; the air filter unit 100 is disposed at the air inlet of the housing 600, and the air supply unit 500 is disposed at the air outlet of the housing 600; the solution dehumidification unit 200 is disposed inside the housing 600; the evaporative cooling unit 300 is at least partially disposed inside the housing 600; and the solution concentration and regeneration unit 400 is at least partially disposed outside the housing 600 or at least partially disposed inside the housing 600. When the solution dehumidification evaporative chiller is installed in a specific environment, such as having a certain sealed space for the solution dehumidification unit 200, the evaporative cooling unit 300, and the air supply unit 500 to deliver air filtered by the air filter unit 100, the housing 600 is not required. When forming a complete product rather than a solution, the housing 600 can be used as a relatively independent partial structure, with pipelines to realize the input and output of dehumidification solution 800 and air conditioning circulating water 900. The solution concentration and regeneration unit 400 can be set entirely or partially outside the housing 600, and connected to the solution dehumidification unit 200 through the recovery pipeline 410 and the regeneration pipeline 420. The pipelines include the liquid inlet pipeline 210, the liquid outlet pipeline 220, the air conditioning return water pipeline 310, the air conditioning water supply pipeline 320, the recovery pipeline 410, and the regeneration pipeline 420, etc.

[0093] In one embodiment, such as Figure 8As shown, the solution dehumidification evaporative chiller also includes a housing 600; the air supply unit 500, the gas-liquid heat exchanger 280, the dehumidification packing structure 250, the liquid collection tray 260, the solution water tank 270, the evaporation packing structure 350, the water collection tray 360, and the air conditioning cooling water tank 370 are all disposed within the housing 600; the liquid inlet pipe 210 and the liquid outlet pipe 220 are at least partially disposed within the housing 600; the recovery pipe 410, the regeneration pipe 420, the air conditioning return water pipe 310, and the air conditioning supply water pipe 320 are partially disposed within the housing 600; the air filter unit 100 is disposed at the air inlet F1 of the housing 600, and the air supply unit 500 is disposed at the air outlet F2 of the housing 600. Furthermore, the solution distributor 240, the evaporation water distributor 340, the water supply valve 380, and / or the solution circulation pump 230 are also disposed within the housing 600.

[0094] To facilitate automatic control, in one embodiment, the solution dehumidification evaporative chiller further includes a control unit. The control unit is connected to the vacuum pump 480 and controls the concentration of the dehumidification solution 800 in the inner cavity 442 and the solution tank 270 by controlling the workload of the vacuum pump 480, thereby adjusting the humidity of the dehumidified air to control the temperature of the air conditioning circulating water 900 in the air conditioning cooling water tank 370. In one embodiment, the control unit is also connected to the throttle valve 430. The control unit automatically opens the throttle valve 430 when the dehumidification solution 800 in the solution tank 270 accumulates to a predetermined level, to deliver the dehumidification solution 800 from the solution tank 270 into the evaporator 440, and automatically closes the throttle valve 430 when the dehumidification solution 800 in the solution tank 270 is below the sensing position 271 in the solution tank 270; and / or, the control unit is connected to the water supply valve 38. 0. The control unit is configured to automatically open the water supply valve 380 when the air conditioning circulating water 900 in the air conditioning cooling water tank 370 is lower than the water supply level 371 in the air conditioning cooling water tank 370, and automatically close the water supply valve 380 when the air conditioning circulating water 900 in the air conditioning cooling water tank 370 is higher than a specific water level; and / or, the control unit is also connected to the solution concentration circulation pump 470 of the solution concentration and regeneration unit 400, for controlling the flow rate of the evaporated dehumidification solution 800 delivered to the solution dehumidification unit 200. In one embodiment, the control unit is also connected to the three-way valve 451 to regulate the amount of steam entering the condensing structure 460 by controlling the three-way valve 451 installed on the steam pipe 481 of the solution concentration and regeneration unit 400, thereby regulating the temperature of the dehumidifying solution 800; and / or, the control unit is also connected to the solution circulation pump 230 to regulate the dehumidification capacity or cooling capacity of the solution dehumidification unit 200 for the ambient air by controlling the flow rate of the dehumidifying solution 800 in the solution dehumidification unit 200; and / or, the control unit is also connected to the air supply unit 500 of the solution dehumidification evaporative chiller to control the cooling capacity of the solution dehumidification evaporative chiller; and / or, the control unit is also connected to the solution concentration circulation pump 470 of the solution concentration and regeneration unit 400 to control the flow rate of the evaporated dehumidifying solution 800 delivered to the solution dehumidification unit 200. The control unit is also connected to the solution concentration circulation pump 470, used to control the operating status of the solution concentration regeneration unit 400 to deliver the evaporated dehumidifying solution 800 to the solution tank 270. This design facilitates automated control of the solution dehumidification evaporative chiller and precise control of the chilled water at the required temperature, ensuring effective heat dissipation and cooling.

[0095] Below is another specific application example: a solution dehumidification evaporative chiller, which uses a magnetic levitation vacuum pump or an air-levitation vacuum pump to provide vacuum and heat source for the concentration and regeneration of dehumidification solution 800. In winter mode, the solution dehumidification evaporative chiller can cool the air conditioning circulating water 900 of the air conditioner by indirect evaporative cooling alone. When indirect evaporative cooling cannot reach the required water temperature, the solution dehumidification unit 200 starts to operate and begins to dehumidify the external air entering the equipment. After the external air humidity is reduced, the dew point temperature drops significantly, and the required temperature of chilled water can be obtained in the subsequent evaporative cooling process. The solution dehumidification evaporative chiller includes an air filter, a solution dehumidification unit 200, an evaporative cooling unit 300, a solution concentration and regeneration unit 400, a fan, a control unit, a housing 600, and a support frame 700; the solution dehumidification unit 200 includes a solution distributor 240, a dehumidification packing structure 250, a liquid collection tray 260, a solution water tank 270, a solution circulation pump 230, and a gas-liquid heat exchanger 280; the evaporative cooling unit 300 includes an evaporative packing structure 350, an evaporator... The system includes a water dispenser 340, a water collection tray 360, an air conditioning cooling water tank 370, and a water supply valve 380. The solution concentration and regeneration unit 400 includes a throttle valve 430, an evaporator 440, a vacuum pump 480, a condenser coil, and a solution concentration circulation pump 470. The solution concentration and regeneration unit 400 is placed on the support frame 700 outside the housing 600. The air filter is located at the air inlet F1 of the housing 600, and the fan is located at the air outlet F2 of the housing 600. In this embodiment, an air filter is used as the air filtration unit 100, and a fan is used as the air supply unit 500. When the solution dehumidification evaporative chiller is working in the solution concentration and regeneration unit 400, the outlet water temperature of the air conditioning cooling water tank 370 of the solution dehumidification evaporative chiller is adjusted by adjusting the working load of the vacuum pump 480; when the solution dehumidification unit 200 of the solution dehumidification evaporative chiller is working, the liquid level of the dehumidification solution 800 in the solution water tank 270 of the solution dehumidification evaporative chiller is adjusted by the throttle valve 430.

[0096] In one embodiment, the solution dehumidification evaporative chiller includes an air filtration unit 100, a solution dehumidification unit 200, an evaporative cooling unit 300, and a solution concentration and regeneration unit 400. When the solution dehumidification evaporative chiller is working, the outside air is first filtered and purified by the air filtration unit 100, then dehumidified by the solution dehumidification unit 200, and then cooled by the evaporative cooling unit 300 to obtain chilled water at the required temperature. When the solution concentration and regeneration unit 400 is working, the vacuum pump 480 rotates at high speed to generate a vacuum, causing the water in the dehumidification solution 800 in the evaporator 440 to evaporate. The water vapor enters the vacuum pump 480, and the high-temperature water vapor is transported to the condensing structure 460, such as a condensing coil, through the steam pipe 481 to condense into water. The heat released during the condensation process is used to heat the dehumidification solution 800 in the evaporator 440. This achieves a seamless connection between dew point indirect evaporative cooling and solution dehumidification evaporative cooling. Taking data center use as an example, in addition to making significant use of natural cold sources in winter and transitional seasons, the solution dehumidification evaporation mode can be used to cool the air conditioning circulating water 900 in summer. This not only significantly reduces costs but also improves overall energy efficiency compared to conventional chilled water systems. Furthermore, the design of the solution concentration and regeneration unit 400 facilitates the regeneration and recycling of the dehumidification solution 800.

[0097] In each embodiment, the solution dehumidification evaporative chiller operates in three modes: summer mode, transitional season mode, and winter mode. In summer mode, the solution dehumidification unit 200, the solution concentration and regeneration unit 400, and the evaporative cooling unit 300 of the solution dehumidification evaporative chiller operate simultaneously, and the chiller operates in solution dehumidification evaporative cooling mode. In winter mode, the solution dehumidification unit 200 and the solution concentration and regeneration unit 400 do not operate; only the evaporative cooling unit 300 operates, and the chiller operates in direct evaporative cooling mode. In transitional season mode, the solution dehumidification unit 200 and the evaporative cooling unit 300 operate simultaneously, while the solution concentration and regeneration unit 400 does not operate, and the chiller operates in indirect evaporative cooling mode. During transitional season mode, the solution concentration and regeneration unit 400 may also operate intermittently depending on demand and actual conditions.

[0098] In one embodiment, a solution dehumidification air conditioner includes the solution dehumidification evaporative chiller described in any embodiment. In another embodiment, the solution dehumidification air conditioner includes an air conditioning component and the solution dehumidification evaporative chiller described in any embodiment. The chilled water obtained by the evaporative cooling unit 300 is output to the air conditioning component, and the evaporative cooling unit 300 recovers water from the air conditioning component as the air conditioning circulating water 900. In another embodiment, the evaporative cooling unit 300 recovers the used chilled water from the air conditioning component as the air conditioning circulating water 900. In another embodiment, the air conditioning component is a terminal air conditioner, such as a heat exchanger. This design, through the reuse of the dehumidifying solution in the solution concentration and regeneration unit, achieves the combined effect of solution dehumidification and indirect evaporative cooling, resulting in chilled water output. On the one hand, it reduces the humidity of the incoming air, thereby lowering the dew point and indirectly improving the evaporative cooling effect. On the other hand, the dehumidifying solution can be recycled, and the entire solution dehumidification evaporative chiller only needs to be replenished with circulating water, making it convenient, easy to use, and simple to maintain. Furthermore, since chilled water is used as the output cooling source, it has the advantages of a compact product structure and a significantly improved processing capacity.

[0099] It should be noted that other embodiments of this application also include a solution dehumidification evaporative chiller and a solution dehumidification air conditioner formed by combining the technical features of the above embodiments.

[0100] 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.

[0101] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A solution dehumidification evaporative chiller, characterized in that, It includes a solution dehumidification unit (200), an evaporative cooling unit (300), and a solution concentration and regeneration unit (400). The solution dehumidification unit (200) is used to dehumidify the ambient air entering the solution dehumidification evaporative chiller by means of solution dehumidification; The evaporative cooling unit (300) is used to cool the air conditioning circulating water (900) by evaporative cooling to obtain cold water; The solution concentration and regeneration unit (400) is used to concentrate the dehumidification solution (800) whose concentration has been reduced after the air dehumidification treatment of the solution dehumidification unit (200), and then transport it to the solution dehumidification unit (200) for recycling. The solution dehumidification unit (200) includes a solution circulation pump (230), a solution distributor (240), a dehumidification packing structure (250), a liquid collection tray (260), a solution water tank (270), and a gas-liquid heat exchanger (280). The solution circulation pump (230) is connected to the gas-liquid heat exchanger (280) through the liquid inlet pipe (210), the gas-liquid heat exchanger (280) is connected to the solution distributor (240) through the liquid outlet pipe (220), and the liquid inlet pipe (210) is also connected to the solution tank (270) and the solution circulation pump (230). The dehumidifying packing structure (250) is located adjacent to the air inlet or air filter unit (100) of the solution dehumidifying evaporative chiller. The solution distributor (240) is located above the dehumidifying packing structure (250) and is used to distribute the dehumidifying solution (800) onto the dehumidifying packing structure (250). The dehumidifying packing structure (250) is disposed above the liquid collection tray (260). The liquid collection tray (260) is used to collect the dehumidifying solution (800) after the air has been dehumidified in the dehumidifying packing structure (250) and transport it to the solution tank (270).

2. The solution dehumidification evaporative chiller according to claim 1, characterized in that, It also includes an air filtration unit (100) and an air supply unit (500), wherein the air filtration unit (100) is used to filter the air entering the interior of the solution dehumidification evaporative chiller; and the air supply unit (500) is used to deliver the air that passes through the air filtration unit (100), the solution dehumidification unit (200) and the evaporative cooling unit (300) in sequence.

3. The solution dehumidification evaporative chiller according to claim 1, characterized in that, The evaporative cooling unit (300) includes an air conditioning return water pipe (310), an air conditioning supply water pipe (320), an evaporative water distributor (340), an evaporative packing structure (350), a water collection tray (360), an air conditioning cooling water tank (370), and a water supply valve (380). The air conditioning return water pipe (310) is connected to the evaporator water distributor (340), and the air conditioning water supply pipe (320) is connected to the air conditioning cooling water tank (370). The evaporation packing structure (350) is disposed between the dehumidification packing structure (250) and the gas-liquid heat exchanger (280) of the solution dehumidification unit (200), and the evaporation water distributor (340) is disposed above the evaporation packing structure (350). The evaporation water distributor (340) is used to distribute the air conditioning circulating water (900) onto the evaporation packing structure (350). The evaporation packing structure (350) is located above the water collection tray (360). The water collection tray (360) is used to collect the cold water flowing out of the evaporation packing structure (350) and cooled by evaporation cooling with the air after passing through the solution dehumidification unit (200), and transport it to the air conditioning cooling water tank (370). The water supply valve (380) is connected to the air conditioning cooling water tank (370) and the external water pipe respectively, and is used to replenish the air conditioning circulating water (900).

4. The solution dehumidification evaporative chiller according to claim 1, characterized in that, The solution concentration and regeneration unit (400) includes a recovery pipe (410), a regeneration pipe (420), an evaporator (440), a vacuum pump (480), a condensation structure (460), a solution concentration circulation pump (470), and a condensate tank (490). The two ends or inlet and outlet of the recovery pipe (410) are respectively connected to the solution water tank (270) of the solution dehumidification unit (200) and the evaporator (440). The regeneration pipe (420) is connected to the inlet pipe (210) of the solution dehumidification unit (200) and the solution circulation pump (230), and is also connected to the solution concentration circulation pump (470) and the evaporator (440). The vacuum pump (480) is connected to the evaporator (440) and the condenser (460) through a steam pipe (481) and a three-way valve (451). The heat exchange coil of the condensing structure (460) is disposed in the inner cavity (442) of the evaporator (440) to contact the dehumidifying solution (800) in the inner cavity (442). After some of the water in the dehumidifying solution (800) evaporates, the steam generated passes through the vacuum pump (480) and partially enters the condensing structure (460). The condensate generated flows into the condensate tank (490). After losing some of the moisture, the dehumidifying solution (800) in the inner cavity (442) enters the inlet pipe (210) through the regeneration pipe (420) under the action of the solution concentration circulation pump (470).

5. The solution dehumidification evaporative chiller according to claim 4, characterized in that, The solution concentration and regeneration unit (400) also includes a throttle valve (430). The dehumidified solution (800) in the solution tank (270) after dehumidification treatment of the air enters the evaporator (440) after passing through the recovery pipe (410) and the throttle valve (430).

6. The solution dehumidification evaporative chiller according to claim 4, characterized in that, The vacuum pump (480) is a magnetic levitation vacuum pump or an air-suspended vacuum pump.

7. The solution dehumidification evaporative chiller according to claim 4, characterized in that, The solution dehumidification evaporative chiller also includes a support frame (700), and the evaporator (440) is disposed on the support frame (700).

8. The solution dehumidification evaporative chiller according to claim 4, characterized in that, The solution dehumidification evaporative chiller also includes a control unit connected to the vacuum pump (480). The control unit is used to control the concentration of the dehumidification solution (800) in the inner cavity (442) and the solution water tank (270) by controlling the working load of the vacuum pump (480), thereby adjusting the humidity of the air after dehumidification treatment to control the temperature of the air conditioning circulating water (900) in the air conditioning cooling water tank (370) of the evaporative cooling unit (300).

9. The solution dehumidification evaporative chiller according to claim 8, characterized in that, The control unit is also connected to the throttle valve (430) of the solution concentration and regeneration unit (400). The control unit is used to automatically open the throttle valve (430) to deliver the dehumidifying solution (800) in the solution tank (270) into the evaporator (440) when the dehumidifying solution (800) in the solution tank (270) accumulates to a predetermined position, and to automatically close the throttle valve (430) when the dehumidifying solution (800) in the solution tank (270) is lower than the sensing position (271) in the solution tank (270).

10. The solution dehumidification evaporative chiller according to claim 8, characterized in that, The control unit is also connected to the water supply valve (380) of the evaporative cooling unit (300). The control unit is used to automatically open the water supply valve (380) when the air conditioning circulating water (900) in the air conditioning cooling water tank (370) is lower than the water supply level (371) in the air conditioning cooling water tank (370), and to automatically close the water supply valve (380) when the air conditioning circulating water (900) in the air conditioning cooling water tank (370) is higher than a certain water level.

11. The solution dehumidification evaporative chiller according to claim 8, characterized in that, The control unit is also connected to the three-way valve (451) for regulating the amount of steam entering the condensation structure (460) by controlling the three-way valve (451) set on the steam pipe (481) of the solution concentration and regeneration unit (400), thereby regulating the temperature of the dehumidification solution (800).

12. The solution dehumidification evaporative chiller according to claim 8, characterized in that, The control unit is also connected to the solution circulation pump (230) for adjusting the dehumidification capacity or cooling capacity of the solution dehumidification unit (200) for the ambient air by controlling the flow rate of the dehumidification solution (800) in the solution dehumidification unit (200).

13. The solution dehumidification evaporative chiller according to claim 8, characterized in that, The control unit is also connected to the air supply unit (500) of the solution dehumidification evaporative chiller, and is used to control the cooling capacity of the solution dehumidification evaporative chiller.

14. The solution dehumidification evaporative chiller according to claim 8, characterized in that, The control unit is also connected to the solution concentration circulation pump (470) of the solution concentration and regeneration unit (400) for controlling the flow rate of the evaporated dehumidifying solution (800) delivered to the solution dehumidification unit (200).

15. The solution dehumidification evaporative chiller according to claim 1, characterized in that, It also includes an air filter unit (100), an air supply unit (500), and a housing (600); The air supply unit (500), the gas-liquid heat exchanger (280), dehumidification packing structure (250), liquid collection tray (260) and solution water tank (270) of the solution dehumidification unit (200), and the evaporation packing structure (350), water collection tray (360) and air conditioning cooling water tank (370) of the evaporation cooling unit (300) are all disposed inside the housing (600); The inlet pipe (210) and outlet pipe (220) of the solution dehumidification unit (200) are at least partially disposed within the housing (600); The recovery pipe (410) and regeneration pipe (420) of the solution concentration and regeneration unit (400), as well as the air conditioning return water pipe (310) and air conditioning supply water pipe (320) of the evaporation cooling unit (300), are partially disposed inside the housing (600). The air filter unit (100) is located at the air inlet of the housing (600), and the air supply unit (500) is located at the air outlet of the housing (600).

16. The solution dehumidification evaporative chiller according to any one of claims 1 to 15, characterized in that, The evaporative cooling unit (300) operates in crossflow mode, the solution dehumidification unit (200) operates in counterflow mode or crossflow mode, and the gas-liquid heat exchanger (280) of the solution dehumidification unit (200) operates in crossflow mode.

17. A solution-based dehumidification air conditioner, characterized in that, Includes an air conditioning assembly and a solution dehumidification evaporative chiller as described in any one of claims 1 to 16, wherein the chilled water obtained by the evaporative cooling unit (300) is delivered to the air conditioning assembly.

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