Solution dehumidification evaporative water chiller and solution dehumidification air conditioner

Abstract

The application relates to a solution dehumidification evaporative cooling water machine and a solution dehumidification air conditioner. The solution dehumidification evaporative cooling water machine comprises a solution dehumidification unit, an evaporative cooling unit, a solution concentration and regeneration unit, a vacuum condensation unit and a heat supply unit. The solution dehumidification unit dehumidifies the ambient air entering the solution dehumidification evaporative cooling water machine in a solution dehumidification mode. The evaporative cooling unit cools the air conditioner circulating water in an evaporative cooling mode to obtain cold water. The solution concentration and regeneration unit concentrates the dehumidification solution and then sends the dehumidification solution to the solution dehumidification unit for recycling. The heat supply unit provides a heat source. The heat supply unit and the solution concentration and regeneration unit recycle the dehumidification solution, realize solution concentration and regeneration, and can use various low-temperature heat sources as low as about 40 DEG C, so that the utilization range and utilization efficiency of the heat source can be greatly improved, and the energy efficiency of the solution dehumidification evaporative cooling is improved.

Description

Technical Field

[0001] This application relates to the fields of evaporative cooling and heat and mass exchange, and in particular to a solution dehumidification evaporative chiller that uses solar energy, heat pumps or other low-grade heat sources for vacuum concentration and regeneration, and a solution dehumidification air conditioner that uses the solution dehumidification evaporative chiller. Background Technology

[0002] For the heat dissipation requirements of data center IT equipment, the conventional supply air temperature is controlled between 22°C and 27°C. Therefore, high-temperature water at 20°C to 25°C can be used as a cold source. When the ambient air temperature and humidity are relatively high, the dew point can be lowered by dehumidifying and drying the air, thereby lowering the outlet water temperature of evaporative cooling. In this way, data center IT equipment can be cooled by evaporative cooling in summer, which can save the investment in mechanical refrigeration equipment and reduce energy consumption.

[0003] 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 high temperature required for the concentration and reduction of the dehumidifying solution results in low thermal efficiency, and the overall efficiency is not significantly better than traditional air conditioning equipment. Furthermore, the equipment is bulky and has high investment and maintenance costs.

[0004] Solution dehumidification technology uses a heat source to concentrate the dehumidification solution, then dehumidifies the air, and finally evaporates and cools to obtain cold air or cold water. It is the future direction of air conditioning development. At present, the technology is not yet mature, and all products are made to directly treat the air. The equipment is bulky and has low processing capacity. Summary of the Invention

[0005] Therefore, it is necessary to provide a solution dehumidification evaporative chiller and a solution dehumidification air conditioner.

[0006] A solution dehumidification evaporative chiller includes a solution dehumidification unit, an evaporative cooling unit, a solution concentration and regeneration unit, a vacuum condensation unit, and a heating unit. The solution dehumidification unit dehumidifies the ambient air entering the solution dehumidification evaporative chiller using a solution dehumidification method. The evaporative cooling unit cools the air conditioning circulating water using evaporative cooling to obtain chilled water. The solution concentration and regeneration unit concentrates the dehumidification solution, whose concentration has decreased after dehumidification of the air in the solution dehumidification unit, and then returns it to the solution dehumidification unit for recycling. The heating unit provides a heat source for the solution concentration and regeneration unit.

[0007] The above-mentioned solution dehumidification evaporative chiller reuses the dehumidification solution by combining a heating unit with a solution concentration and regeneration unit to achieve solution concentration and regeneration. It can use a variety of low-temperature heat sources as low as about 40°C, thus greatly improving the utilization range and efficiency of the heat source, improving the energy efficiency of solution dehumidification evaporative cooling, and improving the output chilled water effect of solution dehumidification evaporation cooling combined with solution dehumidification.

[0008] In one embodiment, the heating unit includes a solar heat source; the solar heat source includes a solar module, a phase change heat storage module, an input pipe, an output pipe, and a first delivery pump; the input pipe is connected to a first connection end of the condensation structure of the solution concentration and regeneration unit to deliver the heat exchange medium in the condensation structure to the solar module; the solar module is used to heat the heat exchange medium using solar energy and deliver the heated heat exchange medium to the phase change heat storage module; the phase change heat storage module is used to store the heated heat exchange medium and, under the action of the first delivery pump, outputs it to a second connection end of the condensation structure through the output pipe.

[0009] In one embodiment, the heating unit includes a heat pump; the heat pump includes an evaporator, a compressor, a throttling valve, a hot-end input pipe, a hot-end output pipe, a cold-end input pipe, a cold-end output pipe, and a fourth delivery pump; the cold end of the evaporator, under the action of the fourth delivery pump, obtains chilled water from the air conditioning water supply pipe of the evaporative cooling unit through the cold-end input pipe, and is connected to the outlet of the solution dehumidification evaporative chiller through the cold-end output pipe; the hot end of the evaporator is connected to the first connection end of the condensation structure of the solution concentration and regeneration unit through the hot-end input pipe and the throttling valve, and is connected to the second connection end of the condensation structure through the hot-end output pipe and the compressor.

[0010] In one embodiment, in addition to the heat pump, the heating unit also includes a solar heat source; the solar heat source includes a solar module, a phase change heat storage module, an input pipe, an output pipe, and a first delivery pump; the input pipe is connected to the first connection end of the condensation structure of the solution concentration and regeneration unit to deliver the heat exchange medium in the condensation structure to the solar module; the solar module is used to heat the heat exchange medium using solar energy and deliver the heated heat exchange medium to the phase change heat storage module; the phase change heat storage module is used to store the heated heat exchange medium and, under the action of the first delivery pump, outputs it to the second connection end of the condensation structure through the output pipe.

[0011] In one embodiment, the solution dehumidification evaporative chiller further includes a third delivery pump for delivering the heat exchange medium heated by the heating unit to the condensation structure of the solution concentration and regeneration unit; and / or, the evaporative cooling unit operates in crossflow mode, the solution dehumidification unit operates in counterflow mode or crossflow mode, and the vacuum condensation unit operates in crossflow mode.

[0012] In one embodiment, the vacuum condensation unit includes a gas-liquid heat exchanger, a vacuum pump, a condensate tank, a water outlet pipe, and a gas-liquid separator. The upper end of the gas-liquid heat exchanger is connected to the gas outlet of the solution concentration and regeneration unit via a steam pipe, for inputting high-temperature water vapor concentrated by the solution concentration and regeneration unit. The lower end of the gas-liquid heat exchanger is connected to the gas-liquid separator via the water outlet pipe, for outputting the water that has undergone evaporation and cooling and the residual water vapor to the gas-liquid separator. The gas-liquid separator is connected to the vacuum pump and the condensate tank, respectively, and the condensate tank is provided with a condensate drain pipe for draining water.

[0013] In one embodiment, the solution dehumidification unit includes an inlet pipe, a solution circulation pump, a solution distributor, a dehumidification packing structure, a collection tray, and a solution tank. The solution concentration and regeneration unit delivers the concentrated dehumidification solution to the inlet pipe through the inlet end, and the inlet pipe delivers the dehumidification solution to the solution distributor through the solution circulation pump. The dehumidification packing structure is located adjacent to the air inlet or air filter unit of the solution dehumidification evaporative chiller, and the solution distributor is located above the dehumidification packing structure, used to distribute the dehumidification solution onto the dehumidification packing structure. The dehumidification packing structure is... The liquid collection tray is positioned above the liquid collection plate, which is used to collect the dehumidification solution after the air has been dehumidified in the dehumidification packing structure and transport it to the solution water tank; and / or, 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; the inlet of the solution dehumidification evaporative chiller is connected to the evaporative water distributor through the air conditioning return water pipe, and the outlet of the solution dehumidification evaporative chiller is connected to the air conditioning cooling water tank through the air conditioning supply water pipe; the evaporative packing structure is disposed between the solution dehumidification unit and the vacuum condensation unit, and the evaporation... A water distributor is positioned above the evaporation packing structure, and is used to distribute the air conditioning circulating water onto the evaporation packing structure; the evaporation packing structure is located above the water collection tray, and the water collection tray is used to collect the cold water flowing out of the evaporation packing structure after being cooled by evaporation cooling with the air after passing through the solution dehumidification unit, and transport it to the air conditioning cooling water tank; the water replenishment valve is connected to the air conditioning cooling water tank and an external water pipe respectively, and is used to replenish the air conditioning circulating water; and / or, the solution concentration and regeneration unit includes a recovery pipe, a regeneration pipe, an evaporator, a condenser structure, and a solution concentration circulation pump; one end of the recovery pipe is connected to... The outlet end is connected to the solution tank of the solution dehumidification unit, and the other end is connected to the evaporator; one end of the regeneration pipe is connected to the inlet end through the solution concentration circulation pump, and is also connected to the inlet pipe of the solution dehumidification unit through the inlet end, and the other end is connected to the evaporator; the heat exchange coil of the condensation structure is at least partially disposed in the inner cavity of the evaporator to contact the dehumidification solution in the inner cavity, and the steam generated after part of the water in the dehumidification solution evaporates is transported to the vacuum condensation unit through the outlet end and the steam pipe; the dehumidification solution in the inner cavity enters the inlet pipe through the regeneration pipe under the action of the solution concentration circulation pump.

[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, the evaporative cooling unit, and the vacuum condensation unit in sequence.

[0015] In one embodiment, the solution dehumidification evaporative chiller further includes a housing, and the solution dehumidification unit, the evaporative cooling unit, the solution concentration and regeneration unit, and the air supply unit are at least partially disposed within the housing; the air filter unit is disposed at the air inlet of the housing, and the air supply position of the air supply unit is disposed at the air outlet of the housing.

[0016] In one embodiment, a solution dehumidification air conditioner includes an air conditioning assembly and any one of the solution dehumidification evaporative chillers, wherein chilled water obtained from the evaporative cooling unit is delivered to the air conditioning assembly. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is a schematic diagram of an embodiment of the solution dehumidification evaporative chiller described in this application.

[0019] Figure 2 This is a schematic diagram of another embodiment of the solution dehumidification evaporative chiller described in this application.

[0020] Figure 3 This is a schematic diagram of another embodiment of the solution dehumidification evaporative chiller described in this application.

[0021] Figure 4 This is a schematic diagram of another embodiment of the solution dehumidification evaporative chiller described in this application.

[0022] Figure 5 This is a schematic diagram of another embodiment of the solution dehumidification evaporative chiller described in this application.

[0023] Figure 6 for Figure 5 A schematic diagram of the structure of the solar thermal source in the embodiment shown.

[0024] Figure 7This is a schematic diagram of another embodiment of the solution dehumidification evaporative chiller described in this application.

[0025] Figure 8 for Figure 7 A schematic diagram of the heat pump in the embodiment shown.

[0026] Figure 9 This is a schematic diagram of the solution concentration and regeneration unit of another embodiment of the solution dehumidification evaporative chiller described in this application.

[0027] Figure 10 This is a partial structural schematic diagram of another embodiment of the solution dehumidification evaporative chiller described in this application.

[0028] Figure 11 for Figure 10 A schematic diagram of the solution dehumidification unit in the embodiment shown.

[0029] Figure 12 for Figure 10 A schematic diagram of the evaporative cooling unit in the embodiment shown.

[0030] Figure 13 for Figure 10 A partial structural schematic diagram of the embodiment shown.

[0031] Reference numerals: Air filtration unit 100, solution dehumidification unit 200, evaporative cooling unit 300, solution concentration and regeneration unit 400, air supply unit 500, vacuum condensation unit 600, heating unit 700, dehumidification solution 800, housing 900, air inlet F1, air outlet F2;

[0032] Liquid inlet pipe 210, solution circulation pump 230, solution distributor 240, dehumidifying packing structure 250, liquid collection tray 260, solution water tank 270, condensate drain 280, water outlet 271, detection component 272, wire 273;

[0033] Air conditioning return water pipe 310, air conditioning supply water pipe 320, evaporator water distributor 340, evaporator packing structure 350, water collection tray 360, air conditioning cooling water tank 370, water supply level 371, water supply valve 380, air conditioning circulating water 390, water inlet S1, water outlet S2.

[0034] Recovery pipe 410, regeneration pipe 420, throttle valve 430, evaporator 440, output end 441, inner cavity 442, demister 450, condensation structure 460, solution concentration circulation pump 470, steam pipe 481, support frame 490, liquid inlet D1, liquid outlet D2, gas outlet D3, second connection end D4, first connection end D5;

[0035] Gas-liquid heat exchanger 610, vacuum pump 620, condensate tank 630, condensate drain pipe 631, water outlet pipe 640, gas-liquid separator 650; solar heat source 710, heat pump 720, third transfer pump 740, air conditioning cooling water circulation pump 750, output pump 760, check valve 770.

[0036] Solar module 711, phase change thermal storage module 712, input pipe 713, output pipe 714, first delivery pump 715, second delivery pump 716, evaporator 721, compressor 722, throttle valve 723, hot end input pipe 724, hot end output pipe 725, cold end input pipe 726, cold end output pipe 727, fourth delivery pump 728, cold end 729, hot end 730. Detailed Implementation

[0037] 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.

[0038] 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.

[0039] 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.

[0040] In this application, unless otherwise expressly specified and limited, the terms "above" and "below" for "first feature" and "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" for "first feature" and "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" for "first feature" and "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. 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 pertains. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0041] This application discloses a solution dehumidification evaporative chiller, which includes some or all of the structures described in 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 is as follows: Figure 1 As shown, it includes a solution dehumidification unit 200, an evaporative cooling unit 300, a solution concentration and regeneration unit 400, a vacuum condensation unit 600, and a heating unit 700. 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 390 using evaporative cooling to obtain chilled water. The solution concentration and regeneration unit 400 concentrates the dehumidification solution 800 (which has a reduced concentration after air dehumidification in the solution dehumidification unit 200) and then returns it to the solution dehumidification unit 200 for recycling. The heating unit 700 provides a heat source for the solution concentration and regeneration unit 400. It is understood that the inlet and outlet directions of the solution concentration and regeneration unit 400 and the heating unit 700 may differ depending on the heat source of the heating unit 700. In this embodiment, the cooled water obtained from the cooling process is output through the outlet S2, and the air conditioning circulating water 390 is input into the evaporative cooling unit 300 through the inlet S1. The aforementioned solution dehumidification evaporative chiller, through a heating unit and a solution concentration and regeneration unit, reuses the dehumidification solution to achieve solution concentration and regeneration. It can use various low-temperature heat sources as low as approximately 40°C, thus significantly improving the utilization range and efficiency of the heat source, enhancing the energy efficiency of solution dehumidification evaporative cooling, and improving the effect of solution dehumidification and cooling combined with evaporative cooling output chilled water.

[0042] Furthermore, the solution concentration and regeneration unit 400 is also used to transport the concentrated water vapor to the vacuum condensation unit 600 for evaporative cooling. Furthermore, the solution concentration and regeneration unit 400 is also used to transport the cooled heat exchange medium to the heating unit 700, where the heating unit 700 continues to heat the heat exchange medium. Furthermore, the heating unit 700 provides the solution concentration and regeneration unit 400 with a high-temperature heat exchange medium to evaporate the water vapor in the dehumidified solution 800 (which has a reduced concentration after air dehumidification treatment) in the solution concentration and regeneration unit 400, thereby achieving concentration. In one embodiment, the solution concentration and regeneration unit 400 includes the heating unit 700. This design facilitates the recycling of the heat exchange medium. In one embodiment, the heat exchange medium includes water, alcohols, ketones, or esters; provided it is safe to use, it only needs to have a high specific heat capacity and good fluidity. This design fully utilizes the heat exchange medium, reduces application costs and complexity, and facilitates providing integrated products as a systemic solution.

[0043] Furthermore, in one embodiment, the solution concentration and regeneration unit 400 employs a vacuum concentration method, utilizing the cold air generated by the evaporation cooling unit 300 to condense the vapor evaporated in the vacuum. This design improves the working efficiency of the vacuum pump. Further, in one embodiment, the vacuum condensation unit 600 is used to condense water vapor into water, protecting the vacuum pump in the system and reducing its load. The heat generated during condensation is carried away by the cold air generated after evaporation cooling. In one embodiment, the solution concentration and regeneration unit 400 includes the vacuum condensation unit 600. Further, in one embodiment, the vacuum condensation unit 600 employs a dual gas-liquid heat exchange method—water vapor endothermic evaporation and gas-liquid contact evaporation—to cool the air. This is an important inventive point of this application; it can output both cold water and cold air, achieving two goals at once. Furthermore, it fully utilizes the water vapor generated when the solution concentration and regeneration unit 400 concentrates the dehumidifying solution 800, taking full advantage of the absorption of heat from the external environment during water vapor condensation inside the pipe and the low dew point of the dry air, thereby improving energy efficiency.

[0044] 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 2 As shown, with Figure 1Unlike the illustrated embodiment, the solution dehumidification evaporative chiller also includes an air filtration unit 100 and an air supply unit 500. The air filtration unit 100 filters the air entering the solution dehumidification evaporative chiller; the air supply unit 500 supplies the air that has passed through the air filtration unit 100, the solution dehumidification unit 200, the evaporative cooling unit 300, and the vacuum condensation unit 600 sequentially. In one embodiment, the air filtration unit 100 is an air filter or a structural component containing an air filter. Further, the air supply unit 500 supplies air after it has been cooled by evaporation. 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 filtration unit 100, and reach the solution dehumidification unit 200. In various embodiments, the air inlet F1 and 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 housings. Further, in one embodiment, the solution dehumidification evaporative chiller also includes an air inlet structure for delivering external air to the air filter unit 100, and then into the solution dehumidification evaporative chiller, reaching the solution dehumidification unit 200. This design, in hot environments, helps increase the amount of air entering the system. Combined with the dehumidification by the solution dehumidification unit 200 and the solution concentration and regeneration unit 400, this improves the evaporative cooling effect of the evaporative cooling unit 300. Especially for data centers, where IT equipment operates at high outlet temperatures and the available natural cooling source lasts longer, the solution dehumidification evaporative chiller is more advantageous when operating in high-temperature areas, making it suitable for use as a solution dehumidification air conditioner. Specifically, the air conditioning circulating water 390 is cooled by evaporation to obtain chilled water and high-humidity air, and 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.

[0045] In one embodiment, a solution dehumidification evaporative chiller, such as Figure 3 As shown, with Figure 2Unlike the illustrated embodiment, the solution dehumidification evaporative chiller also includes a third transfer pump 740. This third transfer pump 740 is used to transport the heat exchange medium heated by the heating unit 700 to the condensation structure of the solution concentration and regeneration unit 400. That is, the heat exchange medium heated by the heating unit 700 is input into the condensation structure of the solution concentration and regeneration unit 400 under the action of the third transfer pump 740. In other embodiments, the pumping direction of the third transfer pump 740 can be reversed, or it can be located at the other end. Further, in this embodiment, the solution dehumidification evaporative chiller also includes an air conditioning cooling water circulation pump 750 and / or an output pump 760. The air conditioning circulating water 390 input from the inlet S1 enters the evaporative cooling unit 300 or its air conditioning cooling water tank under the action of the air conditioning cooling water circulation pump 750. The cooled water obtained after cooling in the evaporative cooling unit 300 or its air conditioning cooling water tank is output through the outlet S2 under the action of the output pump 760.

[0046] In one embodiment, a solution dehumidification evaporative chiller, such as Figure 4 As shown, with Figure 2 Unlike the illustrated embodiment, the solution dehumidification evaporative chiller also includes a housing 900, within which at least part of the solution dehumidification unit 200, the evaporative cooling unit 300, the solution concentration and regeneration unit 400, and the air supply unit 500 are disposed. In this embodiment, the solution dehumidification evaporative chiller also includes the third delivery pump 740 and a check valve 770, with the delivery direction shown in the figure.

[0047] In one embodiment, such as Figure 4 and Figure 10As shown, the solution dehumidification evaporative chiller also includes a housing 900, and the solution dehumidification unit 200, the evaporative cooling unit 300, the solution concentration and regeneration unit 400 and the air supply unit 500 are at least partially disposed within the housing 900; the air filter unit 100 is disposed at the air inlet F1 of the housing 900, and the air supply position of the air supply unit 500 is disposed at the air outlet F2 of the housing 900. 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 900 is not required. When forming a complete product rather than a solution, the housing 900 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 390. The solution concentration and regeneration unit 400 can be set entirely or partially outside the housing 900, 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 water outlet pipeline 640, the air conditioning return water pipeline 310, the air conditioning water supply pipeline 320, the recovery pipeline 410, and the regeneration pipeline 420, etc.

[0048] In one embodiment, a solution dehumidification evaporative chiller, such as Figure 5 As shown, with Figure 4 The difference between the illustrated embodiment and the traditional embodiment is that in the solution dehumidification evaporative chiller, the heating unit 700 is a solar heat source 710 or the heating unit 700 includes a solar heat source 710; combined with Figure 6 and Figure 9The solar heat source 710 includes a solar module 711, a phase change heat storage module 712, an input pipe 713, an output pipe 714, a first delivery pump 715, a second delivery pump 716, and two check valves 770. The input pipe 713 is connected to the second connection end D4 of the condensation structure 460 of the solution concentration and regeneration unit 400 to transport the heat exchange medium in the condensation structure 460 to the solar module 711. The solar module 711 is used to heat the heat exchange medium using solar energy and transport the heated heat exchange medium to the phase change heat storage module 712. The phase change heat storage module 712 is used to store the heated heat exchange medium, which is output to the first connection end D5 of the condensation structure 460 through the output pipe 714 under the action of the first delivery pump 715, and is prevented from flowing back through a check valve 770. It also flows back to the solar module 711 under the action of the second delivery pump 716 and the other check valve 770. In this embodiment, the phase change thermal storage module has an internal coil containing phase change material and water pipes. Hot water from the solar collector flows into the water pipes, melting the phase change material within the module. Meanwhile, cold water from the evaporator 440 flows into the water pipes, solidifying the phase change material. For example, if the solidification endpoint of the phase change material is 45 to 60 degrees Celsius, then after complete solidification at night, there is no heat source; and after complete liquefaction during the day, there is no more thermal storage capacity. The circulating water inside the water pipes exchanges heat with the phase change material through the water pipes, such as the coils. In cold regions, this circulating water requires the addition of antifreeze. This design provides a vacuum solution concentration and regeneration device that uses solar phase change thermal collection as a heat source, utilizing low-temperature solar thermal sources as low as approximately 40 degrees Celsius.

[0049] In one embodiment, a solution dehumidification evaporative chiller, such as Figure 7 As shown, with Figure 4 The difference between the illustrated embodiments is that in the solution dehumidification evaporative chiller, the heating unit 700 is a heat pump 720 or the heating unit 700 includes a heat pump 720; combined with Figure 8 and Figure 9The heat pump 720 includes an evaporator 721, a compressor 722, a throttle valve 723, a hot-end input pipe 724, a hot-end output pipe 725, a cold-end input pipe 726, a cold-end output pipe 727, and a fourth delivery pump 728. The cold end 729 of the evaporator 721, under the action of the fourth delivery pump 728, obtains cold water from the air conditioning water supply pipe 320 of the evaporative cooling unit 300 through the cold-end input pipe 726, and is connected to the outlet S2 of the solution dehumidification evaporative chiller through the cold-end output pipe 727. The hot end 730 of the evaporator 721 is connected to the first connection end D5 of the condensation structure 460 of the solution concentration and regeneration unit 400 through the hot-end input pipe 724 and the throttle valve 723, and is connected to the second connection end D4 of the condensation structure 460 through the hot-end output pipe 725 and the compressor 722. This design provides a vacuum solution concentration and regeneration device that uses a heat pump to generate a heat source. This device can simultaneously utilize the cold source generated by the heat pump to cool the air conditioning cooling circulating water, significantly improving system efficiency. It should be noted that the input and output of the evaporator 440 to the solar heat source 710 and the heat pump 720, i.e., the first connection terminal D5 and the second connection terminal D4, are different. That is, the refrigerant and water are different and need to be treated differently. For the refrigerant, the evaporator 440 acts as a condenser; the incoming gas enters from the top, and the outflow is liquid. For hot water, the inflow is from the bottom and the outflow is from the top. When the heat pump acts as a cold source, the refrigerant undergoes a phase change in the condenser of the evaporator, condensing into a liquid and releasing heat. When the phase change heat storage system acts as a heat source, hot water flows into the heating coil of the evaporator, cools, and then flows out.

[0050] In one embodiment, in addition to the heat pump 720, the heating unit 700 also includes a solar heat source 710; that is, the heating unit 700 simultaneously includes a solar heat source 710 and a heat pump 720. Other embodiments follow the same principle and will not be described in detail. Further, in one embodiment, the heating unit 700 also includes a first selective valve, a second selective valve, and a third selective valve that are linked together; the first end of the first selective valve is connected to the second connecting end D4, the second end is connected to the output pipe 714, and the third end is connected to the hot-end output pipe 725; the first end of the second selective valve is connected to the first connecting end D5, the second end is connected to the input pipe 713, and the third end is connected to the hot-end input pipe 724; the first end of the third selective valve is connected to the air conditioning water supply pipe 320, the second end is connected to the water outlet S2, and the third end is connected to the cold-end input pipe 726. The first selective valve, the second selective valve, and the third selective valve are linked together to simultaneously connect the first end and the second end, or simultaneously connect the first end and the third end. Furthermore, in one embodiment, the solution dehumidification evaporative chiller also includes a brightness sensor and a control unit. The control unit is connected to the brightness sensor, the first selective valve, the second selective valve, and the third selective valve, respectively. The control unit is used to control the first selective valve, the second selective valve, and the third selective valve in conjunction with the ambient brightness signal from the brightness sensor, that is, to simultaneously connect the first and second ends, or simultaneously connect the first and third ends, so as to select the solar heat source 710 and / or the heat pump 720 as the heating unit 700. This design is advantageous for using natural solar energy when there is sufficient sunlight, using the heat pump when there is insufficient sunlight but cooling is needed, and using both solar energy and the heat pump when the cooling demand is high, thereby ensuring cooling capacity while reducing overall energy consumption. Furthermore, the low-temperature vacuum concentration and regeneration method can make fuller use of solar energy, heat pumps or other low-grade heat sources in solution dehumidification evaporative chillers. Because the dehumidification solution is regenerated by vacuum concentration, a low-temperature heat source as low as about 40°C can be used, which can greatly improve the utilization efficiency of solar heat sources and improve the energy efficiency of heat pump solution dehumidification evaporative cooling.

[0051] In one embodiment, such as Figure 9 As shown, the solution concentration and regeneration unit 400 includes a recovery pipe 410, a regeneration pipe 420, an evaporator 440, a condensation structure 460, and a solution concentration circulation pump 470; combined with Figure 10One end of the recovery pipe 410 is connected to the solution tank 270 of the solution dehumidification unit 200 via the liquid outlet D2, and the other end is connected to the evaporator 440; one end of the regeneration pipe 420 is connected to the liquid inlet D1 via the solution concentration circulation pump 470, and is also connected to the liquid inlet pipe 210 of the solution dehumidification unit 200 via the liquid inlet D1, and the other end is connected to the evaporator 440; the condensation structure 460 or its heat exchange coil is at least partially disposed in the inner cavity 442 of the evaporator 440 to contact the dehumidification solution 800 in the inner cavity 442; the steam generated after the partial evaporation of water in the dehumidification solution 800 is transported to the vacuum condensation unit 600 via the steam outlet D3 and the steam pipe 481; the dehumidification solution 800 in the inner cavity 442 enters the liquid inlet pipe 210 via the regeneration pipe 420 under the action of the solution concentration circulation pump 470. After losing some of the moisture, the dehumidifying solution 800 in the inner cavity 442, under the action of the solution concentration circulation pump 470, enters the liquid inlet pipe 210 through the regeneration pipe 420. Further, the condensing structure 460 includes a condensing pipe, a condensing coil, and a condensing circuit. The condensing structure 460 is used to input the heat exchange medium heated by the heating unit 700 to exchange heat with the dehumidifying solution 800 in the inner cavity 442 of the evaporator 440, whose concentration has been reduced after air dehumidification treatment, to evaporate some of the moisture and form water vapor, i.e., concentrated water vapor. The condensing structure 460 is also used to transport the cooled heat exchange medium to the heating unit 700 so that the heat exchange medium can be heated in the heating unit 700 for reuse.

[0052] Furthermore, the solution concentration and regeneration unit 400 is also equipped with an external vacuum pump, which is located outside the evaporator 440. In one embodiment, the external vacuum pump is connected to the evaporator 440, the gas-liquid heat exchanger of the vacuum condensation unit 600, and the condensate tank of the vacuum condensation unit 600 via a steam pipe 481 and a three-way valve. In one embodiment, the solution concentration and regeneration unit 400 also includes a demister 450 connected to the external vacuum pump. The demister 450 can be located inside or outside the evaporator 440. The demister 450, the external vacuum pump, and the condensate tank are sequentially connected via a steam pipe 481. In this embodiment, the demister 450 is located inside the evaporator 440. In one embodiment, the demister 450 is sequentially connected to the external vacuum pump and the condensate tank via a steam pipe 481; or, the demister 450 is sequentially connected to the external vacuum pump, the three-way valve, and the condensate tank via a steam pipe 481. 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, i.e., the evaporator 440 may include the condensing structure 460 and the demister 450. In one embodiment, the external vacuum pump is a magnetic levitation vacuum pump or an air-suspended vacuum pump. In one embodiment, the external vacuum pump can be a turbine. The evaporator 440 includes a shell-and-tube heat exchanger and a plate heat exchanger. Figure 9 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.

[0053] In one embodiment, such as Figure 9 As shown, the solution dehumidification evaporative chiller also includes a support frame 490, on which the evaporator 440 is mounted. The support frame 490 can be made of stainless steel or aluminum alloy; for cost considerations, the support frame 490 can consist of only a few separately mounted support members. Using the support frame 490 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.

[0054] In one embodiment, the solution concentration and regeneration unit 400 further includes a three-way valve disposed between the external vacuum pump and the condensate tank. The first end of the three-way valve is connected to the external vacuum pump, the second end is connected to the condensate tank, the gas-liquid heat exchanger, or the gas-liquid separator of the vacuum condensation unit, and the third end is connected to the external environment. Specifically, the second end is directly connected to the condensate tank, or connected to the condensate tank via the gas-liquid separator, or connected to the condensate tank via the gas-liquid heat exchanger and the gas-liquid separator. The solution dehumidification evaporative chiller or the solution concentration and regeneration unit 400 is used to control... The connection state of the three-way valve is controlled to regulate the temperature and concentration of the dehumidifying solution 800 in the inner cavity 442 of the evaporator 440. When the inner cavity 442 is connected to the condensate tank through the three-way valve, the evaporated water from the dehumidifying solution 800 directly or indirectly enters the condensate tank. When the inner cavity 442 is connected to the outside air through the three-way valve, the evaporated water from the dehumidifying solution 800 enters the external environment or the condensate tank. The wider the three-way valve is opened, the more moisture is released into the external environment or the condensate tank, and the lower the temperature of the dehumidifying solution 800. In one embodiment, the third end of the three-way valve 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. By controlling the connection state and connection ratio of the three-way valve, the working load of the external vacuum pump 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 390 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 both the three-way valve and the external vacuum pump. For embodiments with a demister 450, the three-way valve is positioned between the demister 450 and the condensate tank. 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 390 in the air conditioning cooling water tank 370 can be adjusted.

[0055] The solution dehumidification unit 200 is used to dehumidify air using a dehumidification solution 800, for example, to dehumidify air filtered in the air filtration unit 100; that is, to dehumidify 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. In one embodiment, such as... Figure 10 and Figure 11 As shown, the solution dehumidification unit 200 includes an inlet pipe 210, a solution circulation pump 230, a solution distributor 240, a dehumidification packing structure 250, a collection tray 260, and a solution water tank 270. The solution concentration and regeneration unit 400 delivers the concentrated dehumidification solution 800 to the inlet pipe 210 through the inlet end D1. The inlet pipe 210 then delivers the dehumidification solution 800 to the solution distributor 240 through the solution circulation pump 230. The dehumidification packing structure 250 is located adjacent to the air inlet or air filter unit 100 of the solution dehumidification evaporative chiller, that is, the dehumidification packing structure 250 is located on the other side of the air inlet direction of the air filter unit 100, so that the external air is filtered by the air filter unit 100 and then dehumidified at the dehumidification packing structure 250. The solution distributor 240 is positioned above the dehumidifying packing structure 250. The solution distributor 240 is used to distribute the dehumidifying solution 800 onto the dehumidifying packing structure 250, or to apply the dehumidifying solution 800 by spraying or dripping. The dehumidifying effect of the dehumidifying solution 800 can be referenced from conventional techniques, which are omitted here. The dehumidifying packing structure 250 is positioned above the collection tray 260. The collection tray 260 is used to collect the dehumidifying solution 800 after dehumidifying the air in the dehumidifying packing structure 250 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, its ability to absorb moisture from 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 dehumidifying the air, remove some of its moisture, and regenerate it for reuse.

[0056] 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 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 solution distributor 240 or into the inlet pipe 210 to deliver it to the solution distributor 240. In this case, the solution concentration and regeneration unit 400 does not need to operate, which helps save energy and improves the energy efficiency of the solution dehumidification evaporative chiller.

[0057] Furthermore, in this embodiment, the solution tank 270 is provided with an outlet 271, the solution tank 270 is connected to the liquid outlet D2 through the outlet 271, and is connected to the recovery pipe 410 of the solution concentration and regeneration unit 400 through the liquid outlet D2; the solution dehumidification unit 200 also includes a condensate drain 280 disposed at the outlet 271, the condensate drain 280 being used to regulate the liquid level. The solution dehumidification unit 200 further includes a detection element 272 disposed in the solution tank 270. The detection element 272 is connected to the throttling valve 430 of the solution concentration and regeneration unit 400 via a wire 273. The detection element 272 is used to close the throttling valve 430 when the dehumidification solution 800 in the solution tank 270 is lower than the outlet 271, and to open the throttling valve 430 when the dehumidification solution 800 in the solution tank 270 is higher than the outlet 271, so as to deliver the dehumidification solution 800 in the solution tank 270 into the evaporator 440. That is, the throttling valve 430 is used to automatically close when the dehumidification solution 800 in the solution tank 270 is lower than the sensing position 271. In one embodiment, the throttle 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.

[0058] In one embodiment, the steam trap 280 is a float valve, which allows liquid to flow out without leaking air, that is, it drains the water condensed in the solution tank 270 but prevents steam from coming out, thus facilitating the smooth flow of the dehumidifying solution 800; further, the steam trap 280 includes a steam trap valve and a liquid level control valve, which are used to adjust the liquid level and allow liquid to flow out without leaking air.

[0059] 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.

[0060] In one embodiment, such as Figure 10 and Figure 12As 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 inlet S1 of the solution dehumidification evaporative chiller is connected to the evaporative water distributor 340 through the air conditioning return water pipe 310, and the outlet S2 of the solution dehumidification evaporative chiller is connected to the air conditioning cooling water tank 370 through the air conditioning supply water pipe 320. The evaporative packing structure 350 is disposed between the solution dehumidification unit 200 and the vacuum condensation unit 600, and 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 390 onto the evaporative packing structure 350, and can also apply the air conditioning circulating water 390 by spraying or dripping. The application methods include, but are not limited to, dripping, slow flow, and spraying. In this embodiment, the solution dehumidification evaporative chiller or the evaporative cooling unit 300 further includes an air conditioning cooling water circulation pump 750. The air conditioning return water pipe 310 is connected to the evaporative water distributor 340 through the air conditioning cooling water circulation pump 750. The air conditioning cooling water circulation pump 750 is used to pump used chilled 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. The evaporative cooling unit 300 uses air dehumidified by the solution dehumidification unit 200 to cool the air conditioning circulating water 390 by evaporation, obtaining cold water at the required temperature; that is, it evaporatively cools the air conditioning circulating water 390 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.

[0061] In this embodiment, 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 after it has been cooled by evaporation with the air after passing through the solution dehumidification unit 200, and then transport it to the air conditioning cooling water tank 370. That is, the air conditioning circulating water 390 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 the air conditioning cooling water tank 370 and an external water pipe, respectively, and is used to replenish the air conditioning circulating water 390. Due to evaporation losses, replenishing the air conditioning circulating water 390 is necessary. 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 390 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 390 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.

[0062] Furthermore, in one embodiment, such as Figures 10 to 12 As 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 610 and the dehumidification packing structure 250, and the air supply unit 500 is disposed adjacent to the gas-liquid heat exchanger 610. 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.

[0063] In one embodiment, such as Figure 13 As shown, the vacuum condensation unit 600 includes a gas-liquid heat exchanger 610, a vacuum pump 620, a condensate tank 630, a water outlet pipe 640, and a gas-liquid separator 650. The upper end of the gas-liquid heat exchanger 610 is connected to the gas outlet D3 of the solution concentration and regeneration unit 400 via a steam pipe 481, for inputting the high-temperature water vapor concentrated by the solution concentration and regeneration unit 400. The lower end of the gas-liquid heat exchanger 610 is connected to the gas-liquid separator 650 via the water outlet pipe 640, for outputting the water that has completed evaporation and cooling and the residual water vapor to the gas-liquid separator 650. The gas-liquid separator 650 is connected to the vacuum pump 620 and the condensate tank 630 respectively, and the condensate tank 630 is provided with a condensate drain pipe 631 for draining water.

[0064] To facilitate automatic control, in one embodiment, the solution dehumidification evaporative chiller further includes a control unit; the control unit is connected to the external vacuum pump, and the control unit is used to control the concentration of the dehumidification solution 800 in the inner cavity 442 and the solution tank 270 by controlling the workload of the external vacuum pump, thereby adjusting the humidity of the air after dehumidification treatment to control the temperature of the air conditioning circulating water 390 in the air conditioning cooling water tank 370; and / or, the control unit is connected to the throttle valve 430, and the control unit is used to automatically open the throttle valve 430 when the dehumidification solution 800 in the solution tank 270 accumulates to a predetermined position to deliver the dehumidification solution 800 in the solution tank 270 into the evaporator 440. Inside, and when the dehumidifying solution 800 in the solution tank 270 is lower than the outlet 271 in the solution tank 270, the throttle valve 430 is automatically closed; and / or, the control unit is connected to the water supply valve 380, and the control unit is used to automatically open the water supply valve 380 when the air conditioning circulating water 390 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 390 in the air conditioning cooling water tank 370 is higher than a certain 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, and is used to control the flow rate of the evaporated dehumidifying solution 800 delivered to the solution dehumidification unit 200. In one embodiment, the control unit is also connected to the three-way valve to regulate the amount of steam entering the condensation structure 460 by controlling the three-way valve installed on the steam pipe 481 of the solution concentration and regeneration unit 400, thereby regulating the temperature of the dehumidification 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 dehumidification 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 dehumidification 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.

[0065] In one embodiment, the evaporative cooling unit 300 operates in crossflow mode, the solution dehumidification unit 200 operates in either counterflow or crossflow mode, and the vacuum condensation unit 600 operates in crossflow mode. In crossflow mode, the air inlet direction is perpendicular to the water flow direction, and in counterflow mode, the air inlet direction is opposite to the water flow direction. 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, solution concentration and regeneration unit 400, evaporative cooling unit 300, and vacuum condensation unit 600 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, solution concentration and regeneration unit 400, and vacuum condensation unit 600 of the solution dehumidification evaporative chiller 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 evaporative cooling unit 300 of the solution dehumidification evaporative chiller operate simultaneously, while the solution concentration and regeneration unit 400 and vacuum condensation unit 600 do not operate, and the chiller operates in evaporative cooling mode. During the transitional season mode, the solution concentration and regeneration unit 400 and the vacuum condensation unit 600 may also operate intermittently, depending on demand and actual conditions.

[0066] In one embodiment, a solution dehumidification air conditioner includes a solution dehumidification evaporative chiller as described in any embodiment. In another embodiment, the solution dehumidification air conditioner includes an air conditioning component and a solution dehumidification evaporative chiller as described in any embodiment. The chilled water obtained by the evaporative cooling unit 300 is delivered to the air conditioning component. In one embodiment, the evaporative cooling unit 300 recovers water from the air conditioning component as the air conditioning circulating water 390. In one embodiment, the air conditioning component is a terminal air conditioner, such as a heat exchanger. This design, through the combination of a heating unit and a solution concentration and regeneration unit to reuse the dehumidification solution, achieves solution concentration and regeneration. It can use various low-temperature heat sources as low as approximately 40°C, thus significantly improving the utilization range and efficiency of the heat source, enhancing the energy efficiency of solution dehumidification evaporative cooling, and improving the chilled water output effect of the combined solution dehumidification and evaporative cooling.

[0067] 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.

[0068] 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.

[0069] 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), a solution concentration and regeneration unit (400), a vacuum condensation unit (600), and a heating unit (700). 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 (390) 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 decreased after dehumidification treatment of air in the solution dehumidification unit (200), and then transport it to the solution dehumidification unit (200) for recycling. The heating unit (700) is used to provide a heat source for the solution concentration and regeneration unit (400); The vacuum condensation unit (600) includes a gas-liquid heat exchanger (610), a vacuum pump (620), a condensate tank (630), a water outlet pipe (640), and a gas-liquid separator (650). The upper end of the gas-liquid heat exchanger (610) is connected to the gas outlet (D3) of the solution concentration and regeneration unit (400) via a steam pipe (481) for inputting high-temperature water vapor concentrated by the solution concentration and regeneration unit (400). The lower end of the gas-liquid heat exchanger (610) is connected to the gas-liquid separator (650) via the water outlet pipe (640) for outputting the water that has been evaporated and cooled and the residual water vapor to the gas-liquid separator (650). The gas-liquid separator (650) is connected to the vacuum pump (620) and the condensate tank (630) respectively. The condensate tank (630) is provided with a condensate drain pipe (631) for draining water. The solution dehumidification evaporative chiller also includes an air filtration unit (100) and an air supply unit (500). The air filtration unit (100) is used to filter the air entering the solution dehumidification evaporative chiller. The air supply unit (500) is used to send out the air that passes through the air filtration unit (100), the solution dehumidification unit (200), the evaporative cooling unit (300), and the vacuum condensation unit (600) in sequence.

2. The solution dehumidification evaporative chiller according to claim 1, characterized in that, The heating unit (700) includes a solar heat source (710); The solar heat source (710) includes a solar module (711), a phase change thermal storage module (712), an input pipe (713), an output pipe (714), and a first delivery pump (715). The input pipe (713) is connected to the first connection end (D5) of the condensation structure (460) of the solution concentration and regeneration unit (400) to transport the heat exchange medium in the condensation structure (460) to the solar module (711). The solar module (711) is used to heat the heat exchange medium using solar energy and to transport the heated heat exchange medium to the phase change heat storage module (712). The phase change heat storage module (712) is used to store the heated heat exchange medium, which is then output to the second connection end (D4) of the condensing structure (460) through the output pipe (714) under the action of the first delivery pump (715).

3. The solution dehumidification evaporative chiller according to claim 1, characterized in that, The heating unit (700) includes a heat pump (720); The heat pump (720) includes an evaporator (721), a compressor (722), a throttle valve (723), a hot end input pipe (724), a hot end output pipe (725), a cold end input pipe (726), a cold end output pipe (727), and a fourth transfer pump (728). The cold end (729) of the evaporator (721) receives cold water from the air conditioning water supply pipe (320) of the evaporative cooling unit (300) through the cold end input pipe (726) under the action of the fourth delivery pump (728), and is connected to the outlet (S2) of the solution dehumidification evaporative chiller through the cold end output pipe (727). The hot end (730) of the evaporator (721) is connected to the first connection end (D5) of the condensing structure (460) of the solution concentration and regeneration unit (400) through the hot end input pipe (724) and the throttle valve (723), and is connected to the second connection end (D4) of the condensing structure (460) through the hot end output pipe (725) and the compressor (722).

4. The solution dehumidification evaporative chiller according to claim 3, characterized in that, The heating unit (700) also includes a solar heat source (710); The solar heat source (710) includes a solar module (711), a phase change thermal storage module (712), an input pipe (713), an output pipe (714), and a first delivery pump (715). The input pipe (713) is connected to the first connection end (D5) of the condensation structure (460) of the solution concentration and regeneration unit (400) to transport the heat exchange medium in the condensation structure (460) to the solar module (711). The solar module (711) is used to heat the heat exchange medium using solar energy and to transport the heated heat exchange medium to the phase change heat storage module (712). The phase change heat storage module (712) is used to store the heated heat exchange medium, which is then output to the second connection end (D4) of the condensing structure (460) through the output pipe (714) under the action of the first delivery pump (715).

5. The solution dehumidification evaporative chiller according to claim 1, characterized in that, The solution dehumidification evaporative chiller also includes a third transfer pump (740), which is used to transfer the heat exchange medium heated by the heating unit (700) to the condensation structure (460) of the solution concentration and regeneration unit (400).

6. The solution dehumidification evaporative chiller according to claim 1, characterized in that, The evaporative cooling unit (300) operates in cross-flow mode, the solution dehumidification unit (200) operates in counter-flow mode or cross-flow mode, and the vacuum condensation unit (600) operates in cross-flow mode.

7. The solution dehumidification evaporative chiller according to claim 1, characterized in that, The solution dehumidification unit (200) includes an inlet pipe (210), a solution circulation pump (230), a solution distributor (240), a dehumidification packing structure (250), a collection tray (260), and a solution water tank (270). The solution concentration and regeneration unit (400) delivers the concentrated dehumidifying solution (800) to the inlet pipe (210) through the inlet end (D1), and the inlet pipe (210) delivers the dehumidifying solution (800) to the solution distributor (240) through 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).

8. 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 inlet (S1) of the solution dehumidification evaporative chiller is connected to the evaporative water distributor (340) through the air conditioning return water pipe (310), and the outlet (S2) of the solution dehumidification evaporative chiller is connected to the air conditioning cooling water tank (370) through the air conditioning water supply pipe (320). The evaporation packing structure (350) is disposed between the solution dehumidification unit (200) and the vacuum condensation unit (600), 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 (390) 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 (390).

9. The solution dehumidification evaporative chiller according to claim 1, characterized in that, The solution concentration and regeneration unit (400) includes a recovery pipeline (410), a regeneration pipeline (420), an evaporator (440), a condensation structure (460), and a solution concentration circulation pump (470). One end of the recovery pipe (410) is connected to the solution water tank (270) of the solution dehumidification unit (200) through the liquid outlet (D2), and the other end is connected to the evaporator (440). One end of the regeneration pipe (420) is connected to the inlet end (D1) through the solution concentration circulation pump (470), and is connected to the inlet pipe (210) of the solution dehumidification unit (200) through the inlet end (D1), and the other end is connected to the evaporator (440). The heat exchange coil of the condensing structure (460) is at least partially disposed in the inner cavity (442) of the evaporator (440) to contact the dehumidifying solution (800) in the inner cavity (442). The steam generated after the partial evaporation of water in the dehumidifying solution (800) is transported to the vacuum condensing unit (600) through the outlet (D3) and the steam pipe (481). 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).

10. The solution dehumidification evaporative chiller according to any one of claims 1 to 9, characterized in that, The solution dehumidification evaporative chiller also includes a housing (900), and the solution dehumidification unit (200), the evaporative cooling unit (300), the solution concentration and regeneration unit (400) and the air supply unit (500) are at least partially disposed within the housing (900); The air filter unit (100) is located at the air inlet of the housing (900), and the air supply unit (500) is located at the air outlet of the housing (900).

11. A solution-based dehumidification air conditioner, characterized in that, The solution dehumidification air conditioner includes an air conditioning component and a solution dehumidification evaporative chiller as described in any one of claims 1 to 10, wherein the chilled water obtained by the evaporative cooling unit (300) is delivered to the air conditioning component.

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