Refrigeration and dehumidification device based on liquid fins and dehumidification method thereof

Abstract

The invention relates to the technical field of finned tube heat exchangers, in particular to a refrigeration and dehumidification device based on liquid fins and a dehumidification method thereof.The refrigeration and dehumidification device comprises base tubes, the outer sides of tube bodies of the base tubes are sleeved with a plurality of liquid guide rings, and the multiple base tubes are connected through elbows to form a finned tube heat exchanger; one side of the finned tube heat exchanger is provided with a gas inlet, and the other side is provided with a gas outlet; the liquid guide ring is made of nonmetal; and during spraying, the liquid dripping from the liquid guide ring in the vertical direction forms a liquid fin. According to the scheme, the liquid fins are adopted, the liquid guide rings are adopted to form the liquid fins, and meanwhile the liquid guide rings do not need to have the heat conduction function. Due to the fact that the liquid fins exchange heat in a flowing mode, the height of the liquid fins can be greatly increased compared with that of solid fins, and certainly for the liquid fins, the dust blocking problem and the fin corrosion problem do not exist. The refrigeration and dehumidification system based on the liquid fin type heat exchanger is good in refrigeration and dehumidification effect and suitable for industrial application occasions with certain corrosivity.

Description

Technical Field

[0001] The present invention relates to the technical field of fin-tube heat exchangers, and in particular to a liquid fin-based refrigeration and dehumidification device and a dehumidification method thereof. Background Art

[0002] Current gas refrigeration and dehumidification systems, such as air refrigeration and dehumidification, primarily utilize finned tubes. This utilizes a cooling medium, such as refrigerant or chilled water, within the tubes to cool and dehumidify the air outside. Fins are often used on the outside of the tubes to increase the heat exchange area on the gas side and enhance heat transfer. Finned tubes for refrigeration and dehumidification are typically radially finned tubes, meaning the fins are distributed radially around the tube.

[0003] Conventional comfort air conditioning systems for cooling and dehumidification mostly use copper tubes with aluminum fins. The core process is tube expansion, where copper tubes are placed over aluminum fins. Mechanical or hydraulic expansion machines apply pressure to the copper tubes, causing them to expand plastically and form a tight fit with the aluminum fins. This traditional tube expansion process can create tiny gaps between the fins and the base tube, leading to high contact thermal resistance and poor heat transfer efficiency. The welds are also susceptible to corrosion, limiting their use in high-temperature, high-pressure applications. Early expansion processes were more suitable for thin-walled tubes or simple structures with low precision requirements, but struggled to meet the demands of demanding applications like air conditioners with complex fin designs.

[0004] With technological advancements (such as precision tube expansion equipment and material surface treatment processes), the expansion process has significantly improved its tightness and corrosion resistance, gradually being applied to the assembly of finned tubes in refrigeration equipment (such as evaporators and condensers). Modern tube expansion technology achieves uniform expansion of the base tube through mechanical or hydraulic means. Combined with the advantage of no heat-affected zone, it has become a mainstream process for cladding aluminum fins and copper tubes.

[0005] Existing finned tubes require the fins to be tightly bonded to the base tube to ensure effective heat transfer. This process of tightly bonding the fins to the base tube also brings one or more of the following problems:

[0006] First, the material requirements are high and the cost is high. For example, if the expansion tube process is used, copper tubes are required as the base tubes. Their expansion performance is good, but copper tubes are expensive. Second, the processing difficulty increases and the processing cost is high. If copper tubes and expansion tube processes are not used, but steel tubes or stainless steel tubes are used and welding processes are adopted, although the material cost is low, the welding process efficiency is reduced and the processing cost is high. Third, poor expansion tube bonding or desoldering of the welded parts will lead to increased contact thermal resistance and worsened heat transfer.

[0007] In addition, the finned tube heat exchanger has the following limitations:

[0008] First, as the fin height increases, the heat transfer effect of the fin away from the root gradually deteriorates; second, in order to better enhance heat transfer, the fin spacing is often smaller, and the fin height is much larger than the tube diameter, which makes the fin-tube heat exchanger easy to be blocked, especially when dealing with a lot of gas pollutants and high dust concentration, such as in many industrial applications; third, in order to save materials, the fins are densely distributed and the fin thickness is often thin. For example, the aluminum fins of copper tube aluminum fin tubes are often very thin, less than 0.1mm, which leads to poor corrosion resistance of the fins. For coastal areas with high salt concentration in the air, and in industrial applications where the air is more corrosive, the fins corrode quickly, resulting in a short service life of the fin-tube heat exchanger. Summary of the Invention

[0009] The object of the present invention is to provide a refrigeration and dehumidification device based on liquid fins and a dehumidification method thereof, so as to solve the problems encountered in the above-mentioned background technology.

[0010] To achieve the above object, the technical solution of the present invention is as follows:

[0011] A liquid fin-based refrigeration and dehumidification device and a dehumidification method thereof include a base tube, wherein a plurality of liquid guide rings are sleeved on the outer side of the base tube body, and a plurality of the base tubes are connected by elbows to form a fin-tube heat exchanger; a gas inlet is provided on one side of the fin-tube heat exchanger, and a gas outlet is provided on the other side; the liquid guide rings are made of non-metal; when passing through the spraying, the liquid dripping from the liquid guide rings in the vertical direction forms liquid fins.

[0012] Wherein, the liquid-conducting rings are arranged in segments or groups on the body of the base tube, and the liquid-conducting rings are independent radial rings. The spacing d between two adjacent rings or two groups is -mm, and the ring width h of the liquid-conducting rings is 0.5-5mm. The liquid-conducting rings are arranged continuously on the body of the base tube to form threaded rings; the pitch of the threaded rings is 5-30mm, and the ring width of the threaded rings is 1-5mm. As a preferred solution, the liquid-conducting rings are made of any one of polymer materials and ceramic materials. Polymer materials are mainly synthetic, and plastics, synthetic rubbers and synthetic fibers can be used. Ceramic materials are composed of metals, non-metals and their oxides, and have the characteristics of high hardness, high wear resistance, high temperature tolerance, corrosion resistance, etc.

[0013] In order to complete the spraying, a spray system is provided on the top of the fin tube heat exchanger. The spray system sprays liquid onto the top of the fin tube heat exchanger through a liquid spray pipe, and the liquid flows vertically downward along the arrangement of the base tubes.

[0014] In the above solution, a liquid tank is provided at the bottom of the fin-tube heat exchanger, connected to a liquid spray pipe via a liquid pump, and a nozzle is mounted on the liquid spray pipe. A filter is installed at the outlet of the liquid pump, and the filter is connected to the liquid spray pipe via a liquid pipe. As a preferred solution, a solution concentrator is provided on one side of the liquid tank, and the solution concentrator is bidirectionally connected to the liquid tank.

[0015] In the above solution, a condenser is provided outside the fin-tube heat exchanger, the base tube at the bottom outlet of the fin-tube heat exchanger is connected to the condenser through a compressor, and the top of the condenser is connected to the base tube at the top inlet of the fin-tube heat exchanger through a refrigerant pipe.

[0016] A dehumidification method for a refrigeration and dehumidification device based on liquid fins, wherein liquid is sprayed onto the top of a fin-tube heat exchanger through a spray system, and the gas directly contacts the liquid fins for heat exchange, and the gas is cooled or dehumidified while cooling; when the liquid is heated, the heated liquid exchanges heat with the cooling medium in the refrigerant tube and is cooled, and the cooled liquid then passes through a liquid guide ring outside the base tube to form liquid fins, and the liquid fins then contact the gas for heat exchange, and the above process is repeated to achieve refrigeration and dehumidification of the gas.

[0017] The circulation of the liquid is achieved by a combination of a liquid pump and gravity. The liquid pump drives the liquid in the liquid tank at the bottom of the fin-tube heat exchanger and transports it to the spray pipe through a liquid pipeline. The liquid sprayed by the spray pipe falls on the fin-tube heat exchanger and forms liquid fins under the action of gravity through the liquid guide ring outside the fin-tube heat exchanger. After the liquid exchanges heat with the gas, it falls into the liquid tank.

[0018] Compared to existing technologies, the present invention offers the following advantages: This method offers a radically different solution, abandoning the solid fins used in existing technologies and adopting liquid fins. Liquid fins are formed using liquid guide rings, which do not require heat conduction. Consequently, the liquid guide rings no longer require close integration with the base tube, as with existing finned tubes. Instead, the liquid guide rings can have a gap between them, allowing them to separate. Consequently, material and processing requirements are eliminated, as well as the aforementioned contact thermal resistance issue. Because liquid fins transfer heat through flow, their height can be significantly increased compared to solid fins. Furthermore, liquid fins are free of dust clogging and fin corrosion.

[0019] The present invention has significant technical and economic advantages. The liquid fin heat exchanger has the advantages of good heat exchange, corrosion resistance, anti-clogging, less material, low material requirements, simple processing, and low cost. At the same time, the refrigeration and dehumidification system based on the liquid fin heat exchanger has the advantages of good refrigeration and dehumidification effect, energy saving and environmental protection, high reliability, strong adaptability, small size, light weight, and low cost. It is particularly suitable for industrial applications with high requirements and certain corrosiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The disclosure of the present invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them:

[0021] Figure 1 Schematic diagram of the structure of the fin tube heat exchanger in the present invention;

[0022] Figure 2 It is a side view of the liquid fin tube heat exchanger;

[0023] Figure 3 It is a partial front view diagram of the liquid fin tube heat exchanger;

[0024] Figure 4 Schematic diagram of finned tube with spiral liquid guide ring;

[0025] Figure 5 This is the local dimension drawing of the fin tube;

[0026] Figure 6 It is a direct expansion refrigeration and dehumidification device with a liquid fin tube heat exchanger;

[0027] Figure 7 It is a solution dehumidification device with a liquid fin tube heat exchanger.

[0028] Numbers in the figure: 1- finned tube heat exchanger; 11- base tube; 12- liquid guide ring; 13- elbow; 14- threaded ring; 21- liquid spray pipe; 22- liquid pipe; 23- liquid pump; 24- liquid tank; 25- filter; 26- solution concentrator; 3- compressor; 4- condenser; 5- throttle valve; 6- refrigerant pipe. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention will now be further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the relevant components of the present invention.

[0030] According to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art may propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific embodiments and drawings are merely illustrative of the technical solution of the present invention and should not be regarded as the entire invention or as a limitation or restriction of the technical solution of the present invention.

[0031] The technical solution of the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0032] Example 1, as Figure 1 、 Figure 2 、 Figure 3 As shown, a liquid fin-based refrigeration and dehumidification device includes a base tube 11, which is a long cylindrical central tube. Several liquid guide rings 12 are mounted on the outside of the base tube 11. These rings 12 are annular, disc-shaped structures. Multiple base tubes 11 are connected via elbows 13 to form a fin-tube heat exchanger 1. A cooling medium CM enters the tubes through the inlet CMI of the base tube 11 and exits through the outlet CMO. This fin-tube heat exchanger 1 can be used in fin tube assembly for refrigeration equipment (such as evaporators / condensers).

[0033] Fin-tube heat exchanger 1 is equipped with a gas inlet QI on one side and a gas outlet QO on the other, allowing ambient air to cool the fin-tube heat exchanger 1. The liquid guide ring 12 is made of non-metal, allowing it to be directly attached to the base tube 11. This eliminates the need for welding, as in prior art, and eliminates the need for heat conduction. Here, the liquid simply guides the liquid to the bottom. During spraying, the liquid dripping vertically from the liquid guide ring 12 forms the liquid fin LCP.

[0034] The liquid L sprayed by the spray pipe 21 reaches the base pipe 11 , and under the action of the liquid guide ring 12 , the liquid flows downward along the liquid guide ring 12 under the action of gravity to form the liquid fin LCP.

[0035] Among them, see Figure 5 In one of the schemes, the liquid guide rings 12 are arranged in sections or groups on the tube body of the base tube 11. When segmented, a single liquid guide ring 12 is evenly mounted on the outer tube of the base tube 11. When grouped, multiple liquid guide rings 12 form a group and are evenly mounted on the outer tube of the base tube 11.

[0036] The liquid guide ring 12 does not need to be in close contact with the base tube like a fin. A gap of greater than 0.1 mm is permitted between the liquid guide ring 12 and the base tube 11. This is because the liquid guide ring 12 does not transfer heat; heat transfer is achieved through the liquid. The liquid guide ring 12 primarily guides liquid, forming intervals of downward liquid flow, acting as a fin. The fin is a flowing fin. The liquid guide ring 12 can have various forms. One form uses an independent liquid guide ring, that is, an independent radial ring, which is arranged at intervals along the axial direction of the base tube 11.

[0037] The liquid guide ring 12 is an independent radial ring, which is sleeved on the outer diameter of the base tube 11. The spacing d between two adjacent rings or two groups is 2-10mm, and the ring width h of the liquid guide ring 12 is 0.5-5mm. Figure 4 In one embodiment, the liquid guide ring 12 is continuously arranged on the body of the base tube 11 to form a threaded ring 14. The thread pitch of the threaded ring 14 is 5-30 mm, and the ring width of the threaded ring 14 is 1-5 mm.

[0038] Since the liquid guide ring 12 is made of non-metal, as a preferred solution, the liquid guide ring 12 is made of any one of a polymer material and a ceramic material. Polymer materials are mainly synthetic and can be plastics, synthetic rubber, and synthetic fibers. Ceramic materials are composed of metals, non-metals, and their oxides, and have the characteristics of high hardness, high wear resistance, high temperature tolerance, and corrosion resistance.

[0039] The material of the liquid guide ring 12 can be metal material or any material that is easy to form and process, just like the fins. As mentioned above, the liquid guide ring does not have a heat transfer function, so the liquid guide ring can be made of a polymer material or ceramic material that has poorer thermal conductivity than metal, and can be formed by a mold, thereby greatly improving production efficiency and reducing costs.

[0040] In addition, in order to complete the spraying, a spray system is provided on the top of the fin-tube heat exchanger 1. The spray system sprays liquid onto the top of the fin-tube heat exchanger 1 through the liquid spray pipe 21. The liquid flows vertically downward along the arrangement of the base tube 11. When flowing, the liquid forms a liquid fin LCP between the upper and lower layers of the base tube 11.

[0041] The liquid sprayed on the liquid fin LCP includes water, salt water, ionic liquid, solution or oil.

[0042] Example 2, please refer to Figure 6 Based on the solution of Example 1, a liquid tank 24 is provided at the bottom of the fin-tube heat exchanger 1. The liquid tank 24 is connected to the liquid spray pipe 21 via a liquid pump 23. The liquid spray pipe 21 is equipped with a nozzle. A filter 25 is provided at the water outlet of the liquid pump 23. The filter 25 is connected to the liquid spray pipe 21 via a liquid pipe 22.

[0043] During implementation, as a preferred solution, a condenser 4 can be provided outside the fin-tube heat exchanger 1, and the base tube 11 located at the bottom outlet of the fin-tube heat exchanger 1 is connected to the condenser 4 through a compressor, and the top of the condenser 4 is connected to the base tube 11 located at the top inlet of the fin-tube heat exchanger 1 through a refrigerant pipe 6.

[0044] Based on Example 2, a self-expanding cooling and dehumidifying device based on liquid fins is described. This device constitutes a dehumidification system. The liquid in the dehumidification system is water. The system includes a fin-tube heat exchanger 1, which serves as the evaporator of the refrigerant compression system. Refrigerant pipes 6 connect the fin-tube heat exchanger 1, condenser 4, compressor 3, and throttle valve 5 to form a refrigeration compression cycle for refrigerant R. Specifically, the outlet of compressor 3 is connected to the inlet of condenser 4, the outlet of condenser 4 is connected to the inlet of throttle valve 5, the outlet of throttle valve 5 is connected to the inlet of fin-tube heat exchanger 1, and the outlet of fin-tube heat exchanger 1 is connected to the inlet of compressor 3. Condenser 4 can be an air-cooled condenser or other condenser types, such as water-cooled.

[0045] The above-mentioned refrigerant compression refrigeration cycle is a well-known system and will not be described in detail here. The refrigerant R cools the water, which in turn cools the gas through the liquid fins, thereby achieving gas refrigeration and dehumidification.

[0046] The liquid tank 24 is located below the fin-tube heat exchanger 1. The liquid tank 24 is connected to the inlet of the liquid pump 23 through the liquid pipe 22. The outlet of the liquid pump 23 is connected to the inlet of the filter 25 through the liquid pipe 22. The outlet of the filter 25 is connected to the liquid spray pipe 21. The liquid spray pipe 21 is located above the fin-tube heat exchanger 1. The liquid tank is also provided with a drain port LO. The gas inlet and outlet are arranged on the outer side of the fin-tube heat exchanger 1, with the gas inlet AI on one side and the gas outlet AO on the other side. The gas is driven by a fan (not shown in the figure).

[0047] Example 3, please refer to Figure 7 Based on the solution of Example 1, a solution concentrator 26 is provided on one side of the liquid tank 24, and the solution concentrator 26 is bidirectionally connected to the liquid tank 24.

[0048] A liquid fin-based solution dehumidification device based on Example 3 constitutes a dehumidification system, wherein the liquid used in the dehumidification system is a solution. The system includes a fin-tube heat exchanger 1, a liquid tank 24, a liquid pump 23, a liquid pipe 22, a liquid spray pipe 21, a filter 25, and a solution concentrator 26.

[0049] The tube-side inlet of the fin-tube heat exchanger 1 is connected to the chilled water supply pipe CWI, and the tube-side outlet is connected to the chilled water return pipe CWO. A liquid tank 24 is located below the fin-tube heat exchanger 1. This tank is connected to the inlet of a liquid pump 23 via a liquid pipe 22. The outlet of the liquid pump 23 is connected to the inlet of a filter 25 via a liquid pipe 22. The outlet of the filter 25 is connected to a liquid spray pipe 21, which is located above the fin-tube heat exchanger 1. The liquid tank 24 is connected to a solution concentrator 26. The dilute solution in the tank 24 is discharged to the solution concentrator 26 via the dilute solution pipe L1, and the concentrated solution is returned from the solution concentrator 26 to the tank 24 via the concentrated solution pipe L2. The fin side of the fin-tube heat exchanger 1 has gas inlets and outlets, with gas inlet AI on one side and gas outlet AO on the other. The gas is driven by a fan. The function of the solution concentrator 26 is to maintain the solution concentration.

[0050] The gas in the above system is normal air, but it can also be other gases. A typical case is the fresh air in a factory workshop, such as a ship production workshop, which has a large refrigeration and dehumidification capacity.

[0051] Example 4, a dehumidification method for a refrigeration and dehumidification device based on liquid fins, liquid is sprayed onto the top of the fin-tube heat exchanger 1 through a spray system, the gas is in direct contact with the liquid fins for heat exchange, and the gas is cooled or dehumidified while cooling; when the liquid is heated, the heated liquid is cooled by heat exchange with the cooling medium in the refrigerant tube, and the cooled liquid is then cooled through the liquid guide ring 12 outside the base tube 11 to form liquid fins, and the liquid fins are in contact with the gas for heat exchange, and the above process is repeated to achieve refrigeration and dehumidification of the gas.

[0052] The circulation of the liquid is achieved by a combination of a liquid pump 23 and gravity. The liquid pump 23 drives the liquid in the liquid tank 24 at the bottom of the fin-tube heat exchanger 1 and transports it to the spray pipe 21 through the liquid pipe 22. The liquid sprayed from the spray pipe 21 falls on the fin-tube heat exchanger 1 and forms liquid fins under the action of gravity through the liquid guide ring 12 outside the fin-tube heat exchanger 1. After the liquid exchanges heat with the gas, it falls into the liquid tank 24.

[0053] In summary, this method offers a radically different solution, abandoning the solid fins used in existing technologies in favor of liquid fins. Liquid fins are formed using liquid guide rings, which eliminate the need for heat conduction. Consequently, the rings no longer require close integration with the base tube, as with existing finned tubes. Instead, they can have a gap between them, allowing them to separate. Consequently, material and processing requirements are eliminated, as is the aforementioned issue of contact thermal resistance. Because liquid fins transfer heat through fluid flow, their height can be significantly increased compared to solid fins. Furthermore, liquid fins eliminate the issues of dust clogging and fin corrosion.

[0054] The present invention has significant technical and economic advantages. The liquid fin heat exchanger has the advantages of good heat exchange, corrosion resistance, anti-clogging, less material, low material requirements, simple processing, and low cost. At the same time, the refrigeration and dehumidification system based on the liquid fin heat exchanger has the advantages of good refrigeration and dehumidification effect, energy saving and environmental protection, high reliability, strong adaptability, small size, light weight, and low cost. It is particularly suitable for industrial applications with high requirements and certain corrosiveness.

[0055] It should be noted that, in this document, the terms "comprise," "include," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. These undisclosed elements are all prior art known to those skilled in the art.

[0056] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A refrigeration and dehumidification device based on liquid fins, characterized by: The invention comprises a base tube (11), wherein a plurality of liquid guide rings (12) are sleeved on the outer side of the tube body of the base tube (11), and a plurality of the base tubes (11) are connected via an elbow (13) to form a finned tube heat exchanger (1); a gas inlet is provided on one side of the finned tube heat exchanger (1), and a gas outlet is provided on the other side; the liquid guide ring (12) is made of non-metal; and when sprayed, liquid dripping from the liquid guide ring (12) in the vertical direction forms liquid fins.

2. The liquid fin-based refrigeration and dehumidification device according to claim 1, characterized in that: The liquid guide rings (12) are arranged on the body of the base tube (11) in sections or groups. The liquid guide rings (12) are independent radial rings. The spacing d between two adjacent rings or two groups is 2-10 mm. The ring width h of the liquid guide rings (12) is 0.5-5 mm.

3. The liquid fin-based refrigeration and dehumidification device according to claim 1, characterized in that: The liquid guide ring (12) is continuously arranged on the body of the base tube (11) to form a threaded ring (14); the thread pitch of the threaded ring (14) is 5-30 mm, and the ring width of the threaded ring (14) is 1-5 mm.

4. The liquid fin-based refrigeration and dehumidification device according to claim 1, characterized in that: A spray system is provided on the top of the fin-tube heat exchanger (1). The spray system sprays liquid onto the top of the fin-tube heat exchanger (1) through a liquid spray pipe (21), and the liquid flows vertically downward along the arrangement of the base tube (11).

5. The liquid fin-based refrigeration and dehumidification device according to claim 4, characterized in that: A liquid tank (24) is provided at the bottom of the fin tube heat exchanger (1), and the liquid tank (24) is connected to a liquid spray pipe (21) via a liquid pump (23), and a nozzle is installed on the liquid spray pipe (21); a filter (25) is provided at the water outlet of the liquid pump (23), and the filter (25) is connected to the liquid spray pipe (21) via a liquid pipe (22).

6. The liquid fin-based refrigeration and dehumidification device according to claim 5, characterized in that: A solution concentrator (26) is provided on one side of the liquid tank (24), and the solution concentrator (26) is bidirectionally connected to the liquid tank (24).

7. The liquid fin-based refrigeration and dehumidification device according to claim 5, characterized in that: A condenser (4) is provided outside the fin-tube heat exchanger (1); a base tube (11) located at the bottom outlet of the fin-tube heat exchanger (1) is connected to the condenser (4) via a compressor; and a top of the condenser (4) is connected to a base tube (11) located at the top inlet of the fin-tube heat exchanger (1) via a refrigerant tube (6).

8. The liquid fin-based refrigeration and dehumidification device according to claim 1, characterized in that: The liquid guide ring (12) is made of any one of polymer materials and ceramic materials.

9. A dehumidification method for a liquid fin-based refrigeration and dehumidification device according to any one of claims 4 to 8, characterized in that: The liquid is sprayed onto the top of the fin-tube heat exchanger (1) through a spray system, and the gas is directly in contact with the liquid fins for heat exchange, and the gas is cooled or dehumidified while being cooled; when the liquid is heated, the heated liquid is then cooled by heat exchange with the cooling medium in the refrigerant tube, and the cooled liquid is then passed through the liquid guide ring (12) outside the base tube (11) to form liquid fins, and the liquid fins are then in contact with the gas for heat exchange, and the above process is repeated to achieve refrigeration and dehumidification of the gas.

10. The dehumidification method of a liquid fin-based refrigeration and dehumidification device according to claim 9, characterized in that: The circulation of the liquid is achieved by a liquid pump (23) and gravity. The liquid pump (23) drives the liquid in the liquid tank (24) at the bottom of the fin-tube heat exchanger (1) and transports it to the spray pipe (21) through the liquid pipe (22). The liquid sprayed by the spray pipe (21) falls on the fin-tube heat exchanger (1) and forms liquid fins under the action of gravity through the liquid guide ring (12) outside the fin-tube heat exchanger (1). After the liquid exchanges heat with the gas, it falls into the liquid tank (24).

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