Absorption type dehumidification device

Abstract

The utility model relates to the technical field of dehumidification devices, and provides an absorption type dehumidification device which comprises a box body, a lithium bromide generating cavity is formed in the box body and communicated with a concentrated solution storage cavity, a first cooling pipe is arranged in the concentrated solution storage cavity, the concentrated solution storage cavity is communicated with an absorption cavity, and the bottom of the absorption cavity is communicated with a high-humidity air input assembly. The top of the absorption cavity communicates with an air output pipe, one side of the absorption cavity communicates with a circulation assembly, the absorption cavity further communicates with a dilute solution storage cavity, and the dilute solution storage cavity communicates with a lithium bromide generation cavity; the top of the lithium bromide generating cavity is communicated with a steam pipeline, the steam pipeline is communicated with a condenser, a second cooling pipe is arranged in the condenser, the top of the condenser is communicated with a residual steam discharging pipeline, and the bottom of the condenser is communicated with a condensate conveying pipeline. By utilizing the characteristic that lithium bromide has strong attraction to water molecules, the high-humidity air is dehumidified, and the lithium bromide air purifier can be recycled, does not need regular maintenance and is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of dehumidification devices, in particular to an absorption dehumidification device. Background Art

[0002] A dehumidifier is a refrigeration machine that removes moisture from the air to reduce humidity.

[0003] The dehumidifier is composed of a compressor, a heat exchanger, a fan, a water container, a casing and a controller. The principle is the action of a centrifugal fan. The humid air in the room passes through the filter to the evaporator. Because the surface temperature of the evaporator is lower than the dew point temperature of the air, the moisture in the air will condense into water droplets and flow out, reducing the humidity in the air. The cooled and dry air continues to flow forward, is heated by the condenser and sent into the warehouse by the centrifugal fan. This cycle continues, and the moisture in the air in the warehouse is continuously condensed and discharged, thereby achieving the purpose of controlling the relative humidity in the warehouse.

[0004] Currently, dehumidifiers are mainly driven by electricity. However, in some areas, power supply is relatively tight, especially in summer, so there are great restrictions on their use. There are also devices that use desiccant for dehumidification, but the devices that usually use desiccant for dehumidification often need to regularly replace and maintain the desiccant, which leads to inconvenience in use. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides an absorption dehumidification device, which dehumidifies high-humidity air by utilizing the strong attraction of lithium bromide to water molecules, and can be recycled, does not require regular maintenance, and is easy to use.

[0006] In order to solve the above technical problems, the technical solution of the utility model is:

[0007] An absorption dehumidification device comprises a box body, wherein a lithium bromide generating chamber is arranged in the box body, a heating tube is arranged in the lithium bromide generating chamber, the lithium bromide generating chamber is connected to a concentrated solution storage chamber, a first cooling tube is arranged in the concentrated solution storage chamber, the concentrated solution storage chamber is connected to an absorption chamber, the bottom of the absorption chamber is connected to a high-humidity air input component, the top is connected to an air output pipe, one side of the absorption chamber is connected to a circulation component, the absorption chamber is also connected to a dilute solution storage chamber, a heat exchange tube is arranged in the dilute solution storage chamber, and the dilute solution storage chamber is connected to the lithium bromide generating chamber;

[0008] The top of the lithium bromide generating chamber is connected to a steam pipe, and the steam pipe is connected to a condenser. A second cooling pipe is provided in the condenser. The output ends of the second cooling pipe and the first cooling pipe are connected to the input end of the heat exchange pipe. The input ends of the second cooling pipe and the first cooling pipe are connected to a cooling tower through a cooling water delivery pipe. The top of the condenser is connected to a residual steam discharge pipe, and the bottom is connected to a condensate delivery pipe.

[0009] As an improved technical solution, the high humidity air input assembly includes a high humidity air input pipe, the high humidity air input pipe penetrates the side wall of the box body and is connected to a first branch pipe, a plurality of aeration plates are arranged on the first branch pipe, and the plurality of aeration plates are all arranged below the liquid level of the absorption chamber;

[0010] The high humidity air input pipe is also equipped with an anti-backflow valve.

[0011] As an improved technical solution, the circulation component includes a circulation pipe, which is connected to a circulation pump. One end of the circulation pipe is connected to the bottom of the absorption chamber, and the other end extends to the top of the absorption chamber and is connected to a second branch pipe. A number of spray heads are arranged on the second branch pipe, and the spraying directions of the several spray heads are all toward the bottom of the absorption chamber.

[0012] As an improved technical solution, a first concentrated solution delivery pipeline is provided between the concentrated solution storage chamber and the absorption chamber, and the first concentrated solution delivery pipeline is connected to the circulation pipeline through a three-way valve.

[0013] As an improved technical solution, a second concentrated solution delivery pipeline is provided between the lithium bromide generation chamber and the concentrated solution storage chamber, a first dilute solution delivery pipeline is provided between the absorption chamber and the dilute solution storage chamber, and a second dilute solution delivery pipeline is provided between the dilute solution storage chamber and the lithium bromide generation chamber;

[0014] The first concentrated solution delivery pipeline, the second concentrated solution delivery pipeline, the first dilute solution delivery pipeline, the second dilute solution delivery pipeline and the cooling water delivery pipeline are all equipped with delivery pumps, and the delivery pumps are connected to a controller.

[0015] As an improved technical solution, the side walls of the lithium bromide generating chamber and the absorption chamber are respectively connected to concentration detectors, and the signals of the concentration detectors are connected to the controller.

[0016] After adopting the above technical solution, the beneficial effects of the utility model are:

[0017] A box body is provided, a lithium bromide generating chamber is provided in the box body, a heating tube is provided in the lithium bromide generating chamber, hot water flows in the heating tube, the hot water can be heated by solar energy or by waste heat, the water in the lithium bromide solution in the lithium bromide generating chamber is continuously evaporated by the heating tube, the lithium bromide generating chamber is connected to the concentrated solution storage chamber, the concentrated solution formed after the lithium bromide solution is continuously evaporated can be stored by the concentrated solution storage chamber, a first cooling tube is provided in the concentrated solution storage chamber, cooling water is provided in the first cooling tube, the concentrated solution in the concentrated solution storage chamber is cooled by the cooling water, the concentrated solution storage chamber is connected to the absorption chamber, the bottom of the absorption chamber is connected to a high-humidity air input component, the top is connected to an air output pipe, high-humidity air can be transported to the absorption chamber through the high-humidity air input component, since the concentrated solution storage chamber is connected to the absorption chamber, The concentrated solution can enter the absorption chamber and absorb the moisture in the high-humidity air, thereby realizing the dehumidification function. The dehumidified air is output through the air output pipe, and the concentrated solution will gradually become a dilute solution after absorbing the moisture. One side of the absorption chamber is connected with a circulation component, and the solution in the absorption chamber is continuously circulated through the circulation component to realize the full dehumidification of the high-humidity air. At the same time, through continuous circulation absorption, the concentrated solution is turned into a dilute solution. The absorption chamber is also connected to the dilute solution storage chamber, and a heat exchange tube is arranged in the dilute solution storage chamber. The heat exchange tube can be used to preliminarily heat the dilute solution in the dilute solution storage chamber. The dilute solution storage chamber is connected to the lithium bromide generation chamber, thereby, the dilute solution that absorbs the moisture in the high-humidity air is transported to the lithium bromide generation chamber, and the above actions are repeated to realize the cycle of the process. No regular maintenance is required, and it is easy to use.

[0018] The top of the lithium bromide generating chamber is connected with a steam pipe, which is connected with a condenser. The water vapor evaporated in the lithium bromide generating chamber can be transported to the condenser through the steam pipe. A second cooling pipe is arranged in the condenser, and cooling water flows in the second cooling pipe. The condenser is cooled by the cooling water to make the water vapor phase change and liquefy. The output ends of the second cooling pipe and the first cooling pipe are connected with the input end of the heat exchange pipe. The cooling water in the second cooling pipe and the first cooling pipe absorbs heat and heats up when passing through the condenser and the concentrated solution storage chamber. The heat exchange pipe can be connected with the dilute solution in the dilute solution storage chamber to preliminarily heat the dilute solution and also reduce the temperature of the cooling water. The input ends of the second cooling pipe and the first cooling pipe are connected with the cooling tower through the cooling water delivery pipe. The top of the condenser is connected with a residual steam discharge pipe, and the bottom is connected with a condensate delivery pipe. The residual steam that is not completely condensed in the condenser can be discharged through the residual steam discharge pipe, and the condensed water formed in the condenser can be transported to other processes through the condensate delivery pipe.

[0019] In summary, the utility model provides an absorption dehumidification device, which achieves dehumidification of high-humidity air by utilizing the strong attraction of lithium bromide to water molecules, and can be recycled, does not require regular maintenance, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work. In addition, in the drawings, the components or parts are not necessarily drawn according to the actual scale.

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the high humidity air input component and the circulation component of the utility model;

[0023] Reference numerals:

[0024] 1. Box body, 2. Lithium bromide generating chamber, 3. Heating tube, 4. Concentrated solution storage chamber, 5. First cooling tube, 6. Absorption chamber, 7. High humidity air input assembly, 701. High humidity air input pipe, 702. First branch pipe, 703. Aeration plate, 704. Anti-backflow valve, 8. Air output pipe, 9. Circulation assembly, 901. Circulation pipeline, 902. Circulation pump, 903. Second branch pipe, 904. Sprinkler head, 10. Dilute solution storage chamber, 11. Heat exchange tube, 12. Steam pipeline, 13. Condenser, 14. Second cooling tube, 15. Cooling water delivery pipeline, 16. Cooling tower, 17. Residual steam discharge pipeline, 18. Condensate delivery pipeline, 19. First concentrated solution delivery pipeline, 20. Three-way valve, 21. Second concentrated solution delivery pipeline, 22. First dilute solution delivery pipeline, 23. Second dilute solution delivery pipeline, 24. Delivery pump, 25. Concentration detector. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] At the same time, the meaning of "and / or" or "and / or" appearing in the full text includes three options. Taking "A and / or B" as an example, it includes option A, or option B, or a option in which both A and B are satisfied.

[0028] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0029] Combination Figure 1-Figure 2As shown, an absorption dehumidification device includes a box body 1, a lithium bromide generating chamber 2 is arranged in the box body 1, and a lithium bromide solution is contained in the lithium bromide generating chamber 2. The attraction of lithium bromide molecules to water molecules in the lithium bromide solution is stronger than the attraction between water molecules. Therefore, the lithium bromide solution has strong hygroscopicity. The lithium bromide solution belongs to the common knowledge of technicians in this technical field and will not be repeated here. A heating tube 3 is arranged in the lithium bromide generating chamber 2. Hot water flows in the heating tube 3. The hot water can be heated by solar energy or by waste heat. The heat pipe 3 causes the water in the lithium bromide solution in the lithium bromide generating chamber 2 to evaporate continuously, so that the concentration of the lithium bromide solution gradually changes from a dilute solution to a concentrated solution. The lithium bromide generating chamber 2 is connected to the concentrated solution storage chamber 4, through which the concentrated solution formed after the lithium bromide solution is continuously evaporated can be stored. A first cooling pipe 5 is provided in the concentrated solution storage chamber 4, and cooling water flows in the first cooling pipe 5. The concentrated solution in the concentrated solution storage chamber 4 is cooled by the cooling water. The concentrated solution storage chamber 4 is connected to the absorption chamber 6. The bottom of the absorption chamber 6 is connected to a high-humidity air input component 7, and the top is connected to an air output pipe 8. High-humidity air can be transported to the absorption chamber 6 through the high-humidity air input component 7. Since the concentrated solution storage chamber 4 is connected to the absorption chamber 6, the concentrated solution can enter the absorption chamber 6 and absorb the water in the high-humidity air, thereby realizing the dehumidification function. The dehumidified air is output through the air output pipe 8, and the concentrated solution will gradually become a dilute solution after absorbing the water. A circulation component 9 is connected to one side of the absorption chamber 6, and the solution in the absorption chamber 6 is continuously circulated through the circulation component 9. , to achieve full dehumidification of high-humidity air. At the same time, through continuous circulation absorption, the concentrated solution is turned into a dilute solution. The absorption chamber 6 is also connected to the dilute solution storage chamber 10. The dilute solution storage chamber 10 is provided with a heat exchange tube 11. The heat exchange tube 11 can be used to preliminarily heat the dilute solution in the dilute solution storage chamber 10. The dilute solution storage chamber 10 is connected to the lithium bromide generation chamber 2. Thus, the dilute solution that absorbs moisture in the high-humidity air is transported to the lithium bromide generation chamber 2. Repeat the above actions to realize the cycle of the process. No regular maintenance is required, and it is easy to use.

[0030] The top of the lithium bromide generating chamber 2 is connected with a steam pipe 12, and the steam pipe 12 is connected with a condenser 13. The water vapor evaporated in the lithium bromide generating chamber 2 can be transported to the condenser 13 through the steam pipe 12. The condenser 13 is provided with a second cooling pipe 14, and cooling water flows in the second cooling pipe 14. The condenser 13 is cooled by the cooling water to make the water vapor phase change and liquefy. The output ends of the second cooling pipe 14 and the first cooling pipe 5 are connected with the input end of the heat exchange pipe 11. The cooling water in the second cooling pipe 14 and the first cooling pipe 5 absorbs heat and heats up when passing through the condenser 13 and the concentrated solution storage chamber 4. , heat exchange can be performed with the dilute solution in the dilute solution storage chamber 10 through the connected heat exchange pipe 11, the dilute solution is preliminarily heated, and the temperature of the cooling water is also reduced. The input ends of the second cooling pipe 14 and the first cooling pipe 5 are connected to the cooling tower 16 through the cooling water delivery pipe 15. The top of the condenser 13 is connected to a residual steam discharge pipe 17, and the bottom is connected to a condensate delivery pipe 18. The residual steam that is not completely condensed in the condenser 13 can be discharged through the residual steam discharge pipe 17, and the condensate formed in the condenser 13 can be delivered to other processes through the condensate delivery pipe 18.

[0031] In addition, various valves are used during the operation of the absorption dehumidification device, such as solenoid valves, throttle valves, check valves, etc. Since the application of various valves is common knowledge to technicians in this technical field, they will not be described here and are not marked in the figure. Designers can add them according to the design requirements of the pipeline.

[0032] Combination Figure 1-Figure 2 As shown, the high humidity air input component 7 includes a high humidity air input pipe 701, which passes through the side wall of the box body 1 and is connected to a first branch pipe 702. A plurality of aeration plates 703 are arranged on the first branch pipe 702. The plurality of aeration plates 703 are all arranged below the liquid level of the absorption chamber 6. The high humidity air can be transported to the aeration plates 703 through the high humidity air input pipe 701 and the first branch pipe 702. The aeration is performed below the liquid level of the lithium bromide solution through the aeration plates 703, so that the high humidity air can be fully in contact with the lithium bromide solution, and then the moisture in the high humidity air is absorbed by the characteristics of the lithium bromide solution, thereby realizing the dehumidification function;

[0033] The high humidity air inlet pipe 701 is also provided with an anti-backflow valve 704 . In the present embodiment, the anti-backflow valve 704 is a check valve. The anti-backflow valve 704 is installed to prevent the lithium bromide solution from flowing back into the high humidity air inlet pipe 701 .

[0034] Combination Figure 1-Figure 2As shown, the circulation component 9 includes a circulation pipe 901, which is connected to a circulation pump 902. One end of the circulation pipe 901 is connected to the bottom of the absorption chamber 6, and the other end extends to the top of the absorption chamber 6 and is connected to a second branch pipe 903. A plurality of spray heads 904 are arranged on the second branch pipe 903. The spraying directions of the plurality of spray heads 904 are all toward the bottom of the absorption chamber 6. The lithium bromide solution at the bottom of the absorption chamber 6 is transported to the top through the circulation pipe 901 and the spray heads 904, and sprayed downward to further absorb moisture in the air and ensure the dehumidification effect.

[0035] Combination Figure 1 As shown, a first concentrated solution delivery pipeline 19 is provided between the concentrated solution storage chamber 4 and the absorption chamber 6. The first concentrated solution delivery pipeline 19 is connected to the circulation pipeline 901 through a three-way valve 20. By setting the three-way valve 20, when the circulation component 9 is working, the first concentrated solution delivery pipeline 19 is in a closed state, and the lithium bromide solution at the bottom of the absorption chamber 6 is transported to the spray head 904 through the circulation pipeline 901. When the first concentrated solution delivery pipeline 19 is transporting, a section of the circulation pipeline 901 between the three-way valve 20 and the absorption chamber 6 is closed, and the first concentrated solution delivery pipeline 19 is connected to another section of the circulation pipeline 901, and the concentrated solution is transported to the absorption chamber 6 through the circulation pipeline 901.

[0036] Combination Figure 1 As shown, a second concentrated solution delivery pipeline 21 is provided between the lithium bromide generation chamber 2 and the concentrated solution storage chamber 4, a first dilute solution delivery pipeline 22 is provided between the absorption chamber 6 and the dilute solution storage chamber 10, and a second dilute solution delivery pipeline 23 is provided between the dilute solution storage chamber 10 and the lithium bromide generation chamber 2;

[0037] A delivery pump 24 is installed on the first concentrated solution delivery pipeline 19, the second concentrated solution delivery pipeline 21, the first dilute solution delivery pipeline 22, the second dilute solution delivery pipeline 23 and the cooling water delivery pipeline 15. The delivery pump 24 is connected to a controller, and the operating state of the delivery pump 24 is controlled by the controller. The controller adopts a PLC controller.

[0038] Combination Figure 1 As shown, the side walls of the lithium bromide generating chamber 2 and the absorption chamber 6 are also connected to concentration detectors 25, and the concentration detectors 25 are connected to the controller. The concentration of the lithium bromide solution in the lithium bromide generating chamber 2 and the absorption chamber 6 is detected by the concentration detector 25. When the detected concentration reaches the set value, the information is transmitted to the controller, and the controller controls the operation of each delivery pump 24;

[0039] The concentrated solution formed in the lithium bromide generating chamber 2 is transported to the concentrated solution storage chamber 4, and the dilute solution stored in the dilute solution storage chamber 10 is transported to the lithium bromide generating chamber 2;

[0040] The dilute solution formed in the absorption chamber 6 is transported to the dilute solution storage chamber 10 , and the concentrated solution stored in the concentrated solution storage chamber 4 is transported to the absorption chamber 6 .

[0041] For ease of understanding, the working process of this embodiment is given below:

[0042] Combination Figure 1-Figure 2 As shown, the lithium bromide solution in the lithium bromide generating chamber 2 is heated by the heating tube 3, so that the water in the lithium bromide solution is continuously evaporated, and the lithium bromide solution is gradually changed from a dilute solution to a concentrated solution. When the concentration detector 25 detects that the concentration of the concentrated solution reaches the set value, the controller controls the delivery pump 24 to deliver the concentrated solution in the lithium bromide generating chamber 2 to the concentrated solution storage chamber 4. At the same time, the cooling water of the cooling tower 16 is passed into the first cooling tube 5, and the concentrated solution in the concentrated solution storage chamber 4 is cooled by the cooling water in the first cooling tube 5. After that, the concentrated solution in the concentrated solution storage chamber 4 is delivered to the absorption chamber 6. At the same time, high-humidity air is delivered to the absorption chamber 6 through the high-humidity air input component 7. The concentrated solution The solution absorbs moisture in the high-humidity air, thereby realizing the dehumidification function. The dehumidified air is output through the air output pipe 8, and the concentrated solution gradually becomes a dilute solution after absorbing moisture. When the concentration detector 25 detects that the concentration of the dilute solution reaches the set value, the controller controls the delivery pump 24 to deliver the dilute solution to the dilute solution storage chamber 10. The dilute solution storage chamber 10 is provided with a heat exchange tube 11. The heat exchange tube 11 can be used to preliminarily heat the dilute solution in the dilute solution storage chamber 10. When the concentrated solution formed in the lithium bromide generating chamber 2 is delivered to the concentrated solution storage chamber 4, the dilute solution storage chamber 10 delivers the dilute solution to the lithium bromide generating chamber 2 through the delivery pump 24, thereby forming a cycle;

[0043] The water vapor evaporated in the lithium bromide generating chamber 2 is transported to the condenser 13 through the steam pipe 12. At the same time, the cooling water of the cooling tower 16 is passed into the second cooling pipe 14, and the condenser 13 is cooled by the second cooling pipe 14 to make the water vapor phase change and liquefy. The liquefied condensed water is transported to other processes through the condensate delivery pipe 18, and the residual steam is discharged through the residual steam discharge pipe 17.

[0044] In summary, the utility model provides an absorption dehumidification device, which achieves dehumidification of high-humidity air by utilizing the strong attraction of lithium bromide to water molecules, and can be recycled, does not require regular maintenance, and is easy to use.

[0045] It should be understood that the purpose of these embodiments is only to illustrate the utility model and is not intended to limit the protection scope of the utility model. In addition, it should also be understood that after reading the technical content of the utility model, those skilled in the art can make various changes, modifications and / or variations to the utility model, and all of these equivalent forms also fall within the protection scope defined by the claims attached to this application.

Claims

1. An absorption dehumidification device, characterized in that: It comprises a box body, wherein a lithium bromide generating chamber is arranged in the box body, a heating tube is arranged in the lithium bromide generating chamber, the lithium bromide generating chamber is connected to a concentrated solution storage chamber, a first cooling tube is arranged in the concentrated solution storage chamber, the concentrated solution storage chamber is connected to an absorption chamber, the bottom of the absorption chamber is connected to a high-humidity air input component, the top is connected to an air output pipe, one side of the absorption chamber is connected to a circulation component, the absorption chamber is also connected to a dilute solution storage chamber, a heat exchange tube is arranged in the dilute solution storage chamber, and the dilute solution storage chamber is connected to the lithium bromide generating chamber; The top of the lithium bromide generating chamber is connected to a steam pipe, and the steam pipe is connected to a condenser. A second cooling pipe is provided in the condenser. The output ends of the second cooling pipe and the first cooling pipe are connected to the input end of the heat exchange pipe. The input ends of the second cooling pipe and the first cooling pipe are connected to a cooling tower through a cooling water delivery pipe. The top of the condenser is connected to a residual steam discharge pipe, and the bottom is connected to a condensate delivery pipe.

2. An absorption dehumidification device as claimed in claim 1, characterized in that: The high humidity air input assembly includes a high humidity air input pipe, the high humidity air input pipe penetrates the side wall of the box body and is connected to a first branch pipe, a plurality of aeration plates are arranged on the first branch pipe, and the plurality of aeration plates are all arranged below the liquid level of the absorption chamber; The high humidity air input pipe is also equipped with an anti-backflow valve.

3. An absorption dehumidification device as claimed in claim 1, characterized in that: The circulation component includes a circulation pipe, which is connected to a circulation pump. One end of the circulation pipe is connected to the bottom of the absorption chamber, and the other end extends to the top of the absorption chamber and is connected to a second branch pipe. A plurality of spray heads are arranged on the second branch pipe, and the spraying directions of the plurality of spray heads are all toward the bottom of the absorption chamber.

4. An absorption dehumidification device as claimed in claim 3, characterized in that: A first concentrated solution delivery pipeline is provided between the concentrated solution storage chamber and the absorption chamber, and the first concentrated solution delivery pipeline is connected with the circulation pipeline through a three-way valve.

5. An absorption dehumidification device as claimed in claim 4, characterized in that: A second concentrated solution delivery pipeline is provided between the lithium bromide generation chamber and the concentrated solution storage chamber, a first dilute solution delivery pipeline is provided between the absorption chamber and the dilute solution storage chamber, and a second dilute solution delivery pipeline is provided between the dilute solution storage chamber and the lithium bromide generation chamber; The first concentrated solution delivery pipeline, the second concentrated solution delivery pipeline, the first dilute solution delivery pipeline, the second dilute solution delivery pipeline and the cooling water delivery pipeline are all equipped with delivery pumps, and the delivery pumps are connected to a controller.

6. An absorption dehumidification device as claimed in claim 5, characterized in that: The side walls of the lithium bromide generating chamber and the absorption chamber are also connected to concentration detectors respectively, and the signals of the concentration detectors are connected to the controller.

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