All-weather air water production system based on nanofiber composite material

Abstract

The invention relates to the technical field of adsorption type air water extraction, in particular to all-weather air water production equipment based on a nanofiber composite material. The device can be used for continuously producing water from air in a wide range, namely in a relative humidity range of 5-100%. The compact structure facilitates implementation of environment miniaturization according to design; and the method can also be applied to dehumidification scenes such as factories. The device is simple in structure, and after the range is expanded, the requirement for air water production with large demand can be met.

Description

Technical Field

[0001] This invention relates to the field of adsorption-based air-to-water technology, specifically to an all-weather air-to-water device based on nanofiber composite materials. Background Technology

[0002] Air-to-water conversion is a technology that separates water vapor from the air and guides it through a cooled heat exchanger surface to condense it into liquid water. This technology can provide a way to obtain fresh water from the air in areas without water sources. Existing air-to-water generators mainly use a compressor to cool the evaporator, causing water vapor to condense to the dew point to produce clean water. This method can only produce water in environments with high air humidity; it cannot work in environments with low humidity, especially when the dew point temperature is below 0°C. Therefore, it is necessary to provide a new system for continuous air-to-water conversion in low relative humidity environments. Summary of the Invention

[0003] To address the aforementioned technical problems, the technical solution of this invention is as follows:

[0004] An all-weather air-to-water device based on nanofiber composite materials includes a dehumidification component, a compressor, an expansion valve, a fan, and a control terminal. The dehumidification component includes an evaporator, a condenser, and a dehumidifier. The dehumidifier is located between the evaporator and the condenser. The expansion valve and the compressor are connected between the evaporator and the condenser. The fan is used to blow air onto the dehumidification component. Both the fan and the compressor are connected to the control terminal.

[0005] Furthermore, the dehumidifier includes a spindle, a motor that drives the spindle to rotate, and a dehumidification unit driven by the spindle. The motor is connected to the control terminal, and the control system controls the dehumidification unit to rotate around the spindle.

[0006] Furthermore, the dehumidification unit is in the shape of a circular plate.

[0007] Furthermore, the circular plate-shaped material can be selected from any one of silicon-based, aluminum-based, glass fiber, inorganic ceramic fiber, composite material, or polymer moisture-absorbing material.

[0008] Furthermore, the fan is an axial flow fan or a centrifugal fan, and the diameter of the fan is not less than the diameter of the circular plate-shaped material.

[0009] Furthermore, the windward area of ​​the evaporator and condenser is not less than 1 / 4 of the circular area of ​​the circular plate material; the distance between the evaporator and the circular plate material is 5mm-20mm, and the distance between the condenser and the circular plate material is 5mm-15mm.

[0010] Furthermore, the rotational speed of the circular plate-shaped material is 5-10 revolutions per hour.

[0011] A water production method for an all-weather air-to-water generator made of nanofiber composite materials, the method is as follows:

[0012] 1) The fan is positioned close to the condenser and blows air toward the condenser;

[0013] 2) The dehumidification unit rotates and adsorbs water vapor;

[0014] 3) The dehumidification unit rotates to the position between the evaporator and the condenser. The heat convection from the condenser evaporates and desorbs the water vapor from the dehumidification wheel, and the desorbed water vapor condenses on the evaporator.

[0015] 4) Collect the condensed clean water.

[0016] A method for preparing a dehumidification unit of an all-weather air-to-water device made of nanofiber composite material, wherein the dehumidification unit is a plate-shaped material prepared by blowing a nanofiber composite material solution through a blown assembly and then pressing it.

[0017] Furthermore, the solute of the nanofiber composite material solution is composed of one or more first components, one or more second components, the two components being used as solutes; and one or more third components being used as solvents, the three components being mixed to form a solution.

[0018] The first component, hygroscopic salts, consists of silica gel, calcium chloride, lithium chloride, lithium bromide, alumina, titanium dioxide, and molecular sieves.

[0019] The second component polymer materials are: polyethylene, polyvinyl alcohol, polystyrene, polyvinyl chloride, polyethylene terephthalate, acrylate copolymer, polyvinylidene fluoride, polypropylene, polyethylene oxide, vinyl acetate, and polyvinylidene chloride resin.

[0020] The third component solvents are: water, benzene, toluene, xylene, hexane, cyclohexane, cyclohexanone, chlorobenzene, methanol, ethanol, isopropanol, diethyl ether, methyl acetate, acetone, acetonitrile, pyridine, ethylene glycol monomethyl ether, and N,N-dimethylformamide.

[0021] Furthermore, the mass ratio of the first component, hygroscopic salt, to the second component, polymer material is 3:1 to 1:10; the solute in the nanofiber composite material solution accounts for 0.1% to 70% of the solution mass.

[0022] Furthermore, the steps for preparing a sheet-like material from a fiber composite solution by composite blowing and molding via a blown spinning assembly followed by pressing are as follows:

[0023] 1 )After the composite material solution is mixed evenly, it is loaded into a syringe with a microporous nozzle. The flow rate of the syringe is set to 0.2-3 ml / h.

[0024] 2) Blow a dry, compressed, parallel airflow at the nozzle at a speed of 5 m / s-20 m / s;

[0025] 3) Use either a flat plate or a roller as a collecting device and place it 10-60 mm away from the syringe needle;

[0026] 4) The blowing time is 10 min-600 min, resulting in flocculent nanofibers;

[0027] 5) The flocculent nanofibers are pressed into plate-like structures with a thickness of 0.7mm-10mm;

[0028] 6) The plate-like structure is prepared into a wheel-shaped honeycomb structure through cutting and bonding processes.

[0029] This invention enables continuous air-to-water generation over a wide range of relative humidity, from 5% to 100%. Its compact structure facilitates miniaturization to suit different environments; it can also be applied in dehumidification scenarios such as factories. Its simple structure, when scaled up, allows for application to high-demand air-to-water generation systems. Attached Figure Description

[0030] Figure 1 A schematic diagram of an all-weather air-to-water device based on nanofiber composite materials;

[0031] Figure 2 Example 1 Figure 1 AA view;

[0032] Figure 3 Example 1 Figure 1 BB to view;

[0033] Figure 4 Example 2 Figure 1 AA view;

[0034] Figure 5 Example 3 Figure 1 AA view;

[0035] Figure labels: 1. Evaporator, 2. Dehumidification unit, 3. Condenser, 4. Compressor, 5. Expansion valve, and 6. Fan. Detailed Implementation

[0036] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Example 1

[0038] refer to Figure 1 Figure 2 and Figure 3 This embodiment discloses an all-weather air-to-water device based on nanofiber composite materials, including a dehumidification component, a compressor 4, an expansion valve 5, a fan 6, and a control terminal. The dehumidification component includes an evaporator 1, a condenser 3, and a dehumidifier. The dehumidifier is located between the evaporator 1 and the condenser 3. The expansion valve 5 and the compressor 4 are connected between the evaporator 1 and the condenser 3. The fan 4 is used to blow air onto the dehumidification component. Both the fan 4 and the compressor 4 are connected to the control terminal.

[0039] The dehumidifier includes a motor that drives the spindle to rotate, and a dehumidification unit 2 driven by the spindle. The motor is connected to a control terminal, and the control system controls the dehumidification unit 2 to rotate around the spindle. The dehumidification unit 2 is a circular plate.

[0040] The circular plate-shaped material can be any of the following: silicon-based, aluminum-based, glass fiber, inorganic ceramic fiber, composite material, or polymer moisture-absorbing material. The fan is an axial flow fan or a centrifugal fan, with a fan diameter not less than the diameter of the circular plate-shaped material. The windward area of ​​evaporator 1 and condenser 3 is not less than 1 / 4 of the circular area of ​​the circular plate-shaped material; the distance between evaporator 1 and the circular plate-shaped material is 5mm-20mm, and the distance between condenser 3 and the circular plate-shaped material is 5mm-15mm. These distances are for reference only and can be adjusted according to power and implementation environment. The rotation speed of the circular plate-shaped material is 5-10 revolutions per hour. A humidity sensor can be added to the entire device and connected to the control system; in this embodiment, dehumidification unit 2 collects water for three units of time and condenses water for one unit of time. The humidity sensor can be set to a reference value x, meaning that the humidity of dehumidification unit 2 reaches x after three units of time (three-quarters of a revolution), and then rotates to the designated position to collect water. Evaporator 1 and condenser 3 can be fan-shaped.

[0041] Example 2

[0042] This embodiment refers to Figure 1 and Figure 4 In the parallel technical solution of Example 1, the evaporator 1 and the condenser 3 can be rectangular.

[0043] Example 3

[0044] refer to Figure 1 and Figure 5 As an example of the parallel technical solution in Embodiment 1, the evaporator 1 and the condenser 3 can be separate multi-segment fan-shaped units. An example of a two-segment fan-shaped unit is shown in the figure.

[0045] Example 4

[0046] This embodiment provides a water production method for an all-weather air-to-water device made of nanofiber composite materials, as follows:

[0047] 1) The fan is installed close to the condenser 3 and blows air towards the condenser 3;

[0048] 2) Dehumidification unit 2 rotates and adsorbs water vapor;

[0049] 3) The dehumidification unit 2 rotates to the middle position between the evaporator 1 and the condenser 3. The heat convection from the condenser 3 evaporates and desorbs the water vapor from the dehumidification wheel. The desorbed water vapor condenses on the evaporator 1.

[0050] 4) Collect the clean water.

[0051] Example 5

[0052] This embodiment provides a method for preparing the dehumidification unit 2 of an all-weather air-to-water device made of nanofiber composite material. The dehumidification unit 2 is a plate-shaped material prepared by blowing out a nanofiber composite material solution through a blown spinning component and then pressing it.

[0053] The solute of the nanofiber composite material solution is composed of one or more first components, one or more second components, the two components being used as solutes; and one or more third components being used as solvents, the three components being mixed to form a solution.

[0054] The first component, hygroscopic salts, consists of silica gel, calcium chloride, lithium chloride, lithium bromide, alumina, titanium dioxide, and molecular sieves.

[0055] The second component polymer materials are: polyethylene, polyvinyl alcohol, polystyrene, polyvinyl chloride, polyethylene terephthalate, acrylate copolymer, polyvinylidene fluoride, polypropylene, polyethylene oxide, vinyl acetate, and polyvinylidene chloride resin.

[0056] The third component solvents are: water, benzene, toluene, xylene, hexane, cyclohexane, cyclohexanone, chlorobenzene, methanol, ethanol, isopropanol, diethyl ether, methyl acetate, acetone, acetonitrile, pyridine, ethylene glycol monomethyl ether, and N,N-dimethylformamide.

[0057] The mass ratio of the first component, hygroscopic salt, to the second component, polymer material is 3:1 to 1:10; the solute in the nanofiber composite material solution accounts for 0.1% to 70% of the solution mass.

[0058] The steps for preparing a sheet material from a fiber composite solution by blowing it through a blown spinning assembly and then pressing it are as follows:

[0059] 1 ) After the composite material solution is mixed evenly, it is loaded into a syringe with a microporous nozzle. The flow rate of the syringe is set to 0.2-3 ml / h.

[0060] 2) Blow a dry, compressed, parallel airflow at the nozzle at a speed of 5 m / s-20 m / s;

[0061] 3) Use either a flat plate or a roller as a collecting device and place it 10-60 mm away from the syringe needle;

[0062] 4) The blowing time is 10 min-600 min, resulting in flocculent nanofibers;

[0063] 5) The flocculent nanofibers are pressed into plate-like structures with a thickness of 0.7mm-10mm;

[0064] 6) The plate-like structure is prepared into a wheel-shaped honeycomb structure through cutting and bonding processes.

[0065] This forms the dehumidification unit 2. The first component, the moisture-absorbing salt, preferably has particles of 0.01-600 μm. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An all-weather air-to-water device based on nanofiber composite materials, characterized in that, The device includes a dehumidification assembly, a compressor, an expansion valve, a fan, and a control terminal. The dehumidification assembly includes an evaporator, a condenser, and a dehumidifier. The dehumidifier is located between the evaporator and the condenser. The expansion valve and the compressor are connected between the evaporator and the condenser. The fan is used to blow air onto the dehumidification assembly. Both the fan and the compressor are connected to the control terminal.

2. The all-weather air-to-water device based on nanofiber composite materials according to claim 1, characterized in that, The dehumidifier includes a spindle, a motor that drives the spindle to rotate, and a dehumidification unit driven by the spindle. The motor is connected to the control terminal, and the control system controls the dehumidification unit to rotate around the spindle.

3. The all-weather air-to-water device based on nanofiber composite materials according to claim 2, characterized in that, The dehumidification unit is a circular plate.

4. The all-weather air-to-water device based on nanofiber composite materials according to claim 3, characterized in that, The circular plate-shaped material can be selected from any one of silicon-based, aluminum-based, glass fiber, inorganic ceramic fiber, composite material, or polymer moisture-absorbing material.

5. The all-weather air-to-water device based on nanofiber composite materials according to claim 3 or 4, characterized in that, The fan is an axial flow fan or a centrifugal fan, and the diameter of the fan is not less than the diameter of the circular plate material.

6. The all-weather air-to-water device based on nanofiber composite material according to claim 4, characterized in that, The windward area of ​​the evaporator and the condenser is not less than 1 / 4 of the circular area of ​​the circular plate material; the distance between the evaporator and the circular plate material is 5mm-20mm, and the distance between the condenser and the circular plate material is 5mm-15mm.

7. The all-weather air-to-water device based on nanofiber composite materials according to any one of claims 2, 3, and 4, characterized in that, The circular plate-shaped material rotates at a speed of 5-10 revolutions per hour.

8. A water production method for an all-weather air-to-water generator made of nanofiber composite materials, characterized in that, The method is as follows: 1) The fan is positioned close to the condenser and blows air toward the condenser; 2) The dehumidification unit rotates and adsorbs water vapor; 3) The dehumidification unit rotates to the position between the evaporator and the condenser. The heat convection from the condenser evaporates and desorbs the water vapor from the dehumidification wheel, and the desorbed water vapor condenses on the evaporator. 4) Collect the condensed clean water.

9. A method for preparing a dehumidification unit of an all-weather air-to-water generator made of nanofiber composite materials, characterized in that, The dehumidification unit is a plate-shaped material made by blowing a nanofiber composite material solution through a blown assembly and then pressing it.

10. The all-weather air-to-water device based on nanofiber composite materials according to claim 9, characterized in that, The solute of the nanofiber composite material solution is composed of one or more first components, one or more second components, the two components being used as solutes; and one or more third components being used as solvents, the three components being mixed to form a solution. The first component, hygroscopic salts, consists of silica gel, calcium chloride, lithium chloride, lithium bromide, alumina, titanium dioxide, and molecular sieves. The second component polymer materials are: polyethylene, polyvinyl alcohol, polystyrene, polyvinyl chloride, polyethylene terephthalate, acrylate copolymer, polyvinylidene fluoride, polypropylene, polyethylene oxide, vinyl acetate, and polyvinylidene chloride resin. The third component solvents are: water, benzene, toluene, xylene, hexane, cyclohexane, cyclohexanone, chlorobenzene, methanol, ethanol, isopropanol, diethyl ether, methyl acetate, acetone, acetonitrile, pyridine, ethylene glycol monomethyl ether, and N,N-dimethylformamide.

11. The all-weather air-to-water device based on nanofiber composite materials according to claim 10, characterized in that, The mass ratio of the first component, hygroscopic salt, to the second component, polymer material is 3:1 to 1:10; the solute in the nanofiber composite material solution accounts for 0.1% to 70% of the solution mass.

12. The all-weather air-to-water device based on nanofiber composite materials according to claim 10 or 11, characterized in that, The steps for preparing a sheet material from a fiber composite solution by blowing it through a blown spinning assembly and then pressing it are as follows: 1 ) After the composite material solution is mixed evenly, it is loaded into a syringe with a microporous nozzle. The flow rate of the syringe is set to 0.2-3 ml / h. 2) Blow a dry, compressed, parallel airflow at the nozzle at a speed of 5 m / s-20 m / s; 3) Use either a flat plate or a roller as a collecting device and place it 10-60 mm away from the syringe needle; 4) The blowing time is 10 min-600 min, resulting in flocculent nanofibers; 5) The flocculent nanofibers are pressed into plate-like structures with a thickness of 0.7mm-10mm; 6) The plate-like structure is prepared into a wheel-shaped honeycomb structure through cutting and bonding processes.

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