Dehumidification equipment based on thermal responsive polymer and expanded polytetrafluoroethylene membrane

Abstract

The present invention belongs to the field of HVAC equipment, and relates to a dehumidification device based on a thermally responsive polymer and an expanded polytetrafluoroethylene film. The dehumidification device based on a thermally responsive polymer and an expanded polytetrafluoroethylene film comprises a thermally responsive polymer moisture absorption unit, an expanded polytetrafluoroethylene coating and a drainage channel, an equipment housing, an orifice plate, a fan, an electric heater and a water collection box. The thermally responsive polymer moisture absorption unit is placed on the orifice plate and arranged in a stacked manner along the height direction of the dehumidification device. The electric heater and the fan are placed at the bottom of the dehumidification device and allow the air to be blown from bottom to top. When the thermally responsive polymer is maximally swollen, the expanded polytetrafluoroethylene film is coated on the outside of each thermally responsive polymer moisture absorption unit, and passes through the orifice plate below to form a drainage channel, and is connected to the water collection box outside the dehumidification device. The present invention can achieve environmental dehumidification, liquid water desorption and efficient collection, which is beneficial to the guarantee of environmental humidity and the energy-saving operation of the dehumidification system.

Description

Technical Field

[0001] The present invention belongs to the field of heating, ventilation and air conditioning equipment, and relates to a dehumidification device. Specifically, the present invention relates to a dehumidification device based on a thermally responsive polymer and an expanded polytetrafluoroethylene film. Background Art

[0002] Conventional solid adsorption dehumidification air-conditioning systems require a relatively high regeneration temperature (usually above 80°C) to ensure that the system's dehumidification capacity meets the humidity environment requirements. On the one hand, high regeneration temperature leads to high regeneration energy consumption of the dehumidification system. On the other hand, water vapor desorbed by traditional adsorbents after saturation will re-enter the environment, which is equivalent to transferring the moisture in the air from the previous dehumidification period to the next period, and cannot achieve true dehumidification. This repeated cycle further increases the energy consumption of the entire system. Summary of the Invention

[0003] The present invention aims to provide a dehumidification device based on a thermally responsive polymer and an expanded polytetrafluoroethylene film.

[0004] Thermally responsive polymers have the characteristics of volume phase transition, and the volume phase transition temperature is usually around 32°C. When the temperature is below the critical temperature, the polymer can adsorb water vapor from the air to achieve dehumidification; when the temperature is above the critical temperature, the polymer molecular chain will shrink and discharge liquid water, achieving desorption and regeneration. Expanded polytetrafluoroethylene film has the characteristics of allowing air and gaseous water molecules to pass through but liquid water cannot pass through. The thermally responsive polymer is combined with the expanded polytetrafluoroethylene film. The dehumidification process uses the expanded polytetrafluoroethylene film to allow the absorbed gaseous water to pass through the thermally responsive polymer and be adsorbed. The desorption process uses the expanded polytetrafluoroethylene film channel to discharge the liquid water entrusted by the thermally responsive polymer in a centralized manner. Through the above method, on the one hand, the regeneration heating energy consumption of dehumidification can be reduced, and on the other hand, the water in the air can be recovered in the form of liquid water. During the desorption process, the water no longer returns to the air environment, achieving true dehumidification. The present invention is realized based on the above research results.

[0005] To achieve the above-mentioned objectives, the present invention provides a dehumidification device based on a thermally responsive polymer and an expanded polytetrafluoroethylene film, comprising a thermally responsive polymer moisture absorption unit, an expanded polytetrafluoroethylene coating and a drainage channel, an equipment housing, an orifice plate, a fan, an electric heater and a water collection box.

[0006] Preferably, the thermally responsive polymer moisture absorption units are placed on the orifice plate and arranged in a stacked manner along the height direction of the dehumidification equipment, with the number of layers being 3-6;

[0007] Preferably, the electric heater and the fan are placed at the bottom of the dehumidification equipment, and the air is blown from bottom to top.

[0008] Preferably, the expanded polytetrafluoroethylene film is coated on the outside of each heat-responsive polymer moisture-absorbing unit when the heat-responsive polymer is maximally swollen, and passes through the layer of perforated plate below to form a horizontal drainage channel with a slope of 2%, and is connected to the water collection box outside the dehumidification equipment.

[0009] Preferably, the power of the electric heater is determined according to the following formula:

[0010] 1.01Qρ(LCST+20-T L )≤W≤1.01Qρ(80-T H )

[0011] Where: Q - dehumidification air volume, m 3 / s; ρ——dehumidified air density, kg / m 3 ; LCST——volume phase transition temperature of thermoresponsive polymer, ℃; T L ——Minimum ambient temperature for equipment use, ℃; T H ——The maximum ambient temperature of the equipment, ℃.

[0012] Preferably, the porosity, including air holes and drainage holes, is ≥ 70%, and the pore diameters of the air holes and drainage holes are both less than or equal to half the side length of the thermally responsive polymer in the contracted state. The center distance of the drainage holes and the number of moisture-absorbing units of a single layer of the thermally responsive polymer should be determined based on the required dehumidified air volume, the side length of the thermally responsive polymer in the contracted state, and the expansion rate of the side length of the thermally responsive polymer, and should simultaneously satisfy the following three formulas:

[0013]

[0014]

[0015] c≤4βa

[0016] Where: c - distance between the drainage holes, m; Q - dehumidified air volume, m 3 / s; n is the number of hygroscopic units in a single layer of thermoresponsive polymer (an even number greater than 4); β is the side length expansion rate of the thermoresponsive polymer (the ratio of the side length in the swollen state to the side length in the contracted state); a is the side length of the thermoresponsive polymer in the contracted state, m.

[0017] Thermoresponsive polymers have a volume phase transition temperature (VPTT). When the polymer temperature is below the VPTT, it can adsorb water vapor from the air. Above the VPTT, the polymer chains shrink and expel liquid water, enabling the collection of liquid water from the atmosphere. However, the amount of liquid water desorbed by thermoresponsive polymers is only about 50% of the equilibrium adsorption capacity. This excess water not only affects the adsorption efficiency but also fails to effectively increase the amount of liquid water collected.

[0018] The present invention provides a dehumidification method, which comprises the following steps: turning on a fan and keeping an electric heater turned off; when the humidity at a humidity control point begins to rise and exceeds an upper tolerance limit, turning on the electric heater and the fan to shrink and dehydrate a heat-responsive polymer, and allowing water vapor to flow along an expanded polytetrafluoroethylene coating on the outer surface of a moisture-absorbing unit of the heat-responsive polymer into a drainage channel to form a water flow, and then converge into a water collection box at the other end of the drainage channel; after no more water flows into the water collection box, the heat-responsive polymer completes regeneration, and dehumidification is resumed after the electric heater is turned off.

[0019] Preferably, during dehumidification, the fan 5 is turned on and the electric heater 6 is kept off. The dehumidified air enters from the bottom of the equipment, passes through each layer of thermally responsive polymer moisture absorption unit 1 for dehumidification, and is discharged from the top of the equipment and enters the environment where dehumidification is required. When the adsorption is saturated, the fan 5 and the electric heater 6 are turned on at the same time. The liquid water desorbed by the thermally responsive polymer moisture absorption unit 1 due to heat shrinkage flows through the expanded polytetrafluoroethylene coating and the drainage channel 2 to the water collection box 7 for collection.

[0020] The dehumidification device of the present invention can be placed in an environment or space to perform dehumidification.

[0021] Preferably, the dehumidification device dehumidifies by absorbing moisture at low temperatures using a thermally responsive polymer. Once saturated with moisture, it is heated and contracted by hot air, expelling the adsorbed water as liquid water and draining it through expanded polytetrafluoroethylene channels into a water collector. This ensures that the desorption process does not humidify the environment and effectively collects water from the atmospheric environment. This device achieves environmental dehumidification, liquid water desorption, and efficient collection without the problem of desorbed water molecules re-entering the dehumidified environment.

[0022] In a preferred embodiment of the present invention, the dehumidification equipment based on a thermally responsive polymer and an expanded polytetrafluoroethylene film comprises a thermally responsive polymer moisture absorption unit, an expanded polytetrafluoroethylene coating and a drainage channel, an equipment housing, a perforated plate, a fan, an electric heater and a water collection box. The thermally responsive polymer moisture absorption unit is placed on the perforated plate and stacked in layers along the height direction of the dehumidification equipment, with the number of layers being 3-6. The electric heater and the fan are placed at the bottom of the dehumidification equipment, and allow the air to blow from the bottom to the top. When the thermally responsive polymer is maximally swollen, the expanded polytetrafluoroethylene film is coated on the outside of each thermally responsive polymer moisture absorption unit, and passes through the perforated plate below to form a horizontal drainage channel with a slope of 1%-10%, and is connected to the water collection box outside the dehumidification equipment. The slope should not be too large, as its main purpose is to promote the flow of water into the water collection box. The slope is preferably 2%-5%, and more preferably 3%-4%.

[0023] The power of the electric heater is determined according to the following formula:

[0024] 1.01Qρ(LCST+20-T L )≤W≤1.01Qρ(80-T H)

[0025] Where: Q - dehumidification air volume, m 3 / s; ρ——dehumidified air density, kg / m 3 ; LCST——volume phase transition temperature of thermoresponsive polymer, ℃; T L ——Minimum ambient temperature for equipment use, ℃; T H ——The maximum ambient temperature of the equipment, ℃.

[0026] During dehumidification, only the fan is turned on, and the electric heater is kept off. When the humidity at the humidity control point begins to rise and exceeds the upper tolerance limit, the electric heater and fan are turned on to shrink and dehydrate the thermoresponsive polymer. When no more water flows into the water collection box, the thermoresponsive polymer is regenerated, and dehumidification is resumed after the electric heater is turned off.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0028] 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 the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0029] The present invention discloses a dehumidification device based on a thermally responsive polymer and an expanded polytetrafluoroethylene film. The device includes a thermally responsive polymer moisture absorption unit, an expanded polytetrafluoroethylene coating and drainage channels, a device housing, an orifice plate, a fan, an electric heater, and a water collection box. During dehumidification, air enters from below and can pass through the expanded polytetrafluoroethylene film to be adsorbed by each layer of the thermally responsive polymer moisture absorption unit. During regeneration, the moisture absorbed by the thermally responsive polymer is desorbed in the form of liquid water and collected along the channel formed by the expanded polytetrafluoroethylene film to the water collection box outside the device, forming a complete dehumidification and regeneration cycle. This novel material combination can reduce desorption energy consumption while ensuring that moisture does not re-enter the environment during desorption, thereby achieving low-energy dehumidification and atmospheric water collection.

[0030] The dehumidification device of the present invention dehumidifies by absorbing moisture at low temperatures using a thermally responsive polymer. Once saturated with moisture, it is heated and contracted by hot air, expelling the adsorbed water as liquid water. This is then discharged through an expanded polytetrafluoroethylene channel into a water collector, ensuring that the desorption process does not humidify the environment and effectively collecting atmospheric water. This device achieves environmental dehumidification, liquid water desorption, and efficient collection without the desorbed water molecules re-entering the dehumidified environment, thus ensuring consistent ambient humidity and energy-efficient operation of the dehumidification system. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, each drawing described below is for some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0032] Figure 1 This is a dehumidification device based on a thermally responsive polymer and expanded polytetrafluoroethylene membrane, according to an embodiment of the present invention. The thermally responsive polymer coats the exterior of each thermally responsive polymer hygroscopic unit, completely encapsulating the unit at maximum swelling. The thermally responsive polymer extends from beneath each unit and through the perforated plate, forming a nearly horizontal drainage channel with a 2% slope that connects to a water collection box outside the dehumidification device.

[0033] Figure 2 for Figure 1 Schematic diagram of the structure of the medium-hole plate. The drain holes are used for drainage, and the air holes are used for gas circulation.

[0034] The figures are marked as follows: thermally responsive polymer moisture absorption unit-1, expanded polytetrafluoroethylene coating and drainage channel-2, equipment housing-3, orifice plate-4, drainage hole-(4-1), air hole-(4-2), fan-5, electric heater-6 and water collection box-7. DETAILED DESCRIPTION

[0035] The present invention discloses a dehumidification device based on a thermally responsive polymer and an expanded polytetrafluoroethylene film. The device includes a thermally responsive polymer moisture absorption unit, an expanded polytetrafluoroethylene coating and drainage channels, a device housing, an orifice plate, a fan, an electric heater, and a water collection box. During dehumidification, air enters from below and can pass through the expanded polytetrafluoroethylene film to be adsorbed by each layer of the thermally responsive polymer moisture absorption unit. During regeneration, the moisture absorbed by the thermally responsive polymer is desorbed in the form of liquid water and collected along the channel formed by the expanded polytetrafluoroethylene film to the water collection box outside the device, forming a complete dehumidification and regeneration cycle. This novel material combination can reduce desorption energy consumption while ensuring that moisture does not re-enter the environment during desorption, thereby achieving low-energy dehumidification and atmospheric water collection.

[0036] The following examples of the present application will clearly and completely describe the technical solution. Obviously, the described examples are only some preferred embodiments of the present application, not all embodiments. Based on the examples in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0037] Example

[0038] The dehumidification equipment based on thermally responsive polymer and expanded polytetrafluoroethylene film includes a thermally responsive polymer moisture absorption unit 1. The thermally responsive polymer is coated on the outside of each thermally responsive polymer moisture absorption unit 1, and completely covers the responsive polymer moisture absorption unit 1 when the thermally responsive polymer is at its maximum swelling. The thermally responsive polymer extends from the bottom of each thermally responsive polymer moisture absorption unit 1 and passes through the layer of perforated plate 4, forming a nearly horizontal drainage channel with a 2% slope, and is connected to the water collection box 7 outside the dehumidification equipment. The expanded polytetrafluoroethylene coating and drainage channel 2 coated on the outside of the thermally responsive polymer, the equipment housing 3, the perforated plate 4, the drainage hole 4-1, the air hole 4-2, the fan 5, and the electric heater 6.

[0039] When the dehumidification duration is short, a three-layer thermally responsive polymer moisture absorption unit 1 can be used; when the dehumidification duration is long, the number of layers of the thermally responsive polymer moisture absorption unit can be increased to 6 layers; when the application environment requires uninterrupted continuous dehumidification, two or more dehumidification equipment based on thermally responsive polymers and expanded polytetrafluoroethylene films can be used, and used through continuous alternating operation and heating desorption.

[0040] Taking the thermoresponsive polymer poly N-isopropylacrylamide (PNIPAM) as an example, according to experimental tests, the volume phase transition temperature of the thermoresponsive polymer is 32°C. The side length of the cut thermoresponsive polymer dehumidification unit 1 in the contracted state is 1 cm, and the side length expansion rate is 2. The application environment conditions are that the dehumidified air volume is 0.1m 3 / s, the minimum ambient temperature for equipment use is 10°C, and the maximum ambient temperature for equipment use is 30°C. Based on the above conditions and the following formula:

[0041] The power of the electric heater is determined according to the following formula:

[0042] 1.01Qρ(LCST+20-T L )≤W≤1.01Qρ(80-T H )

[0043] Where: Q - dehumidification air volume, m 3 / s; ρ——dehumidified air density, kg / m 3 ; LCST——volume phase transition temperature of thermoresponsive polymer, ℃; T L——Minimum ambient temperature for equipment use, ℃; T H ——The maximum ambient temperature of the equipment, ℃.

[0044] It can be calculated that the heating power range of the configured electric heater 6 is about 5.1kW-6kW. According to the heating power range requirements and the following formula:

[0045] The open porosity, including air holes and drainage holes, shall be ≥ 70%, and the apertures of the air holes and drainage holes shall be less than or equal to half of the side length of the thermally responsive polymer in the contracted state; the center distance of the drainage holes and the number of moisture absorption units of a single layer of thermally responsive polymer shall be determined comprehensively based on the required dehumidified air volume, the side length of the thermally responsive polymer in the contracted state, and the expansion rate of the side length of the thermally responsive polymer, and shall simultaneously satisfy the following three formulas:

[0046]

[0047]

[0048] c≤4βa

[0049] Where: c - distance between the drainage holes, m; Q - dehumidified air volume, m 3 / s; n is the number of hygroscopic units in a single layer of thermoresponsive polymer (an even number greater than 4); β is the side length expansion rate of the thermoresponsive polymer (the ratio of the side length in the swollen state to the side length in the contracted state); a is the side length of the thermoresponsive polymer in the contracted state, m.

[0050] The available combinations of the number of single-layer thermally responsive polymer dehumidification units 1 and the center distances of the drainage holes 4-1 include: c=0.06m, n=16; c=0.06m, n=18; c=0.07m, n=16, etc.

[0051] When dehumidifying the environment, the fan 5 is turned on and the electric heater 6 is kept off. The dehumidified air enters from the bottom of the equipment, passes through each layer of the thermally responsive polymer moisture absorption unit 1 for dehumidification, and is discharged from the top of the equipment and enters the environment where dehumidification is required. When the adsorption is saturated, the fan 5 and the electric heater 6 are turned on at the same time. The liquid water desorbed by the thermally responsive polymer moisture absorption unit 1 due to heat shrinkage flows through the expanded polytetrafluoroethylene coating and the drainage channel 2 to the water collection box 7 for collection.

[0052] The dehumidification equipment cycles back and forth according to the above-mentioned pattern, dehumidifying through low-temperature moisture absorption by the thermally responsive polymer. After adsorption saturation, it is heated and shrunk by hot air, squeezing out the adsorbed water in the form of liquid water and discharging it into the water collector through the expanded polytetrafluoroethylene channel, ensuring that the desorption process does not humidify the environment and achieving effective water collection in the atmospheric environment. Adsorption saturation can generally be determined in two ways: 1) An observation window is provided on the device casing, which can be roughly judged by the size of the thermally responsive polymer; 2) A humidity sensor is provided at the air inlet (bottom) and outlet of the device. When the humidity of the two sensors is consistent, it is determined that the adsorption is saturated and no further moisture absorption is possible. The above-mentioned equipment can achieve environmental dehumidification, liquid water desorption and efficient collection, and there will be no problem of desorbed water molecules re-entering the dehumidification environment, which is beneficial to the guarantee of environmental humidity and the energy-saving operation of the dehumidification system.

[0053] Experimental measurements show that the equilibrium adsorption capacity of poly (N-isopropylacrylamide) (PNIPAM) at a relative humidity of 90% is approximately 0.2 g / g, and the liquid water desorption capacity when heated at 50°C is approximately 0.1 g / g. Therefore, at the same heating temperature as conventional silica gel dehumidifiers, the present invention ensures that half of the dehumidified water is desorbed and collected as liquid water, preventing it from being discharged back into the air. This also offers the potential for liquid water recycling.

[0054] Example 2

[0055] Among thermoresponsive polymers, including those grafted onto cotton, fibers, traditional porous materials (primarily silica gel), and block copolymers of N-isopropylacrylamide and N,N′-methylenebisacrylamide, the desorption form remains primarily gaseous water when heated above the LCST, making them inapplicable to this patent. Furthermore, thermoresponsive polymers with a volume phase transition temperature above 40°C or below 30°C are ineffective at absorbing moisture or require high electrical heating energy consumption, making them inapplicable to this invention.

[0056] The embodiments described above are merely specific implementations of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be imagined by any person skilled in the art within the technical scope disclosed in the present application without resorting to creative effort should be included within the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims in the present application.

Claims

1. A dehumidification device, comprising a device housing, a perforated plate, a drainage channel and a water collection box, characterized in that: The thermally responsive polymer moisture absorption unit, the expanded polytetrafluoroethylene coating, the electric heater, and the fan are all disposed inside the housing of the dehumidifier. One or more orifice plates are disposed in parallel inside the housing, the orifice plates being detachably connected to the housing and stacked along the height of the dehumidifier. The expanded polytetrafluoroethylene coating is coated on the outer surface of the thermally responsive polymer moisture absorption unit. The thermally responsive polymer moisture absorption unit is placed on the orifice plate and fixedly connected to the drainage channel, the other end of which converges into the water collection box. In the orifice plate, the open porosity, including air holes and drainage holes, is ≥ 70%, and the apertures of the air holes and drainage holes are both less than or equal to half the side length of the thermally responsive polymer in the contracted state; the center distance of the drainage holes and the number of moisture absorption units of a single layer of thermally responsive polymer should be determined comprehensively based on the required dehumidified air volume, the side length of the thermally responsive polymer in the contracted state, and the expansion rate of the side length of the thermally responsive polymer, and should simultaneously satisfy the following three formulas: ； Where: c - distance between the centers of the drainage holes, m; Q——Dehumidification air volume, m 3 / s; n——the number of hygroscopic units in a single layer of thermoresponsive polymer, an even number greater than 4; ——Side length expansion rate of thermally responsive polymers; a——Side length of the thermoresponsive polymer in the contracted state, m.

2. The dehumidification device according to claim 1, characterized in that: The thermally responsive polymer moisture absorption units are placed on the orifice plate and arranged in layers along the height direction of the dehumidification equipment, with the number of layers being 3-6.

3. The dehumidification device according to claim 1, characterized in that: The electric heater and fan are placed at the bottom of the dehumidification equipment, and the air is blown from bottom to top.

4. The dehumidification device according to claim 1, characterized in that: The expanded polytetrafluoroethylene coating is coated on the outside of each heat-responsive polymer moisture-absorbing unit when the heat-responsive polymer is maximally swollen, and passes through the layer of perforated plate below to form a horizontal drainage channel with a slope of 1%-10%, and is connected to the water collection box outside the dehumidification equipment.

5. The dehumidification device according to claim 1, characterized in that: The power of the electric heater is determined according to the following formula: ； Where: Q——Dehumidification air volume, m 3 / s; ——Dehumidified air density, kg / m 3 ; LCST – volume phase transition temperature of thermoresponsive polymer, °C; ——Minimum ambient temperature for equipment use, °C; ——The maximum ambient temperature of the equipment, ℃.

6. An application method of the dehumidification equipment according to any one of claims 1 to 5, characterized in that: Turn on the fan and keep the electric heater off; when the humidity at the humidity control point begins to rise and exceeds the upper tolerance limit, turn on the electric heater and fan to shrink and dehydrate the thermal responsive polymer, and the water vapor flows along the expanded polytetrafluoroethylene coating on the outer surface of the thermal responsive polymer hygroscopic unit into the drainage channel to form a water flow, and converges into the water collection box at the other end of the drainage channel; after no more water flows into the water collection box, the thermal responsive polymer completes regeneration, and dehumidification is resumed after turning off the electric heater.

7. The application method of the dehumidification equipment according to claim 6, characterized in that: During dehumidification, turn on the fan and keep the electric heater off. The dehumidified air enters from the bottom of the equipment, passes through each layer of thermally responsive polymer desiccant units for dehumidification, and is discharged from the top of the equipment and enters the environment where dehumidification is required. When the adsorption is saturated, turn on the fan and the electric heater at the same time. The liquid water desorbed by the thermally responsive polymer desiccant units due to thermal contraction flows through the expanded polytetrafluoroethylene coating and the drainage channel to the water collection box for collection.

8. The application method of the dehumidification equipment according to claim 6, characterized in that: The dehumidification device is placed in an environment or space to perform dehumidification.

9. The application method of the dehumidification equipment according to claim 8, characterized in that: The dehumidification equipment dehumidifies by absorbing moisture at low temperature through thermally responsive polymers, and after adsorption is saturated, it is heated and contracted by hot air, squeezing out the adsorbed water in the form of liquid water and discharging it to the water collector through the expanded polytetrafluoroethylene channel, ensuring that the desorption process does not humidify the environment and achieving effective water collection in the atmospheric environment; through the above equipment, environmental dehumidification, liquid water desorption and efficient collection can be achieved, and there will be no problem of desorbed water molecules re-entering the dehumidification environment.

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