Device and method for extracting water from air and operating under all working conditions

Abstract

The invention provides a device and a method for extracting water from air operated under all working conditions. The device comprises a solar power supply unit, a salt-carrying hydrogel adsorption-desorption unit, an electric heating desorption unit, a water vapor condensation and collection unit and a PID control unit. The solar power supply system comprises a solar photovoltaic panel, an MPPT (maximum power point tracking) type photovoltaic inverter and a storage battery, the salt-carrying hydrogel adsorption-desorption unit comprises hydrophilic porous hydrogel and a LiCl / CaCl2 composite adsorption material, and the electric heating desorption unit comprises a copper heat-conducting plate loaded with the adsorption material and an electric heating sheet. The water vapor condensation and collection unit is composed of four finned radiators and two semiconductor chilling plates. The PID control unit is composed of a temperature and humidity sensor and a control circuit, wherein the temperature and humidity sensor is connected to the radiators and the front side of the adsorption bed. Water vapor in the environment is enriched through an efficient salt-loaded adsorbent packed bed, desorption is driven in two modes of solar photo-thermal and electric heating, desorbed high-humidity airflow passes through a fin type cooling fin connected with a semiconductor and then is condensed into liquid water, and the process of taking water from air is completed through a collector below. According to the device, low-energy-consumption air water taking under the humidity of 15%-100% can be achieved by controlling the operation time of all the units, the device is portable and compact, the automation degree is high, and high-water-yield air water taking is achieved by using solar photo-thermal and power generation as energy input.

Description

Technical Field

[0001] The present invention relates to the technical field of water intake equipment, and in particular to an air water intake device operating under full working conditions and a use method thereof. Background Art

[0002] The shortage of water resources, especially fresh water resources, is an increasingly serious problem facing the world. According to the 2024 United Nations World Water Development Report, about 50% of the world's population currently faces severe water shortages for at least three months, and a quarter of the world's population is facing "extremely high" water shortage pressure. Against the backdrop of population growth and increasing abnormal climate, the number of people facing water shortages will soar to more than 5 billion by 2050.

[0003] In order to alleviate the contradiction between water supply and demand, humans have actively taken measures such as building water conservancy facilities, pipeline transportation and large-scale water treatment plants to improve water supply elasticity. These large-scale water supply systems obtain fresh water resources from surface and groundwater, and basically meet the water needs of densely populated cities. However, due to the shortcomings of long construction period, complex supporting facilities and high economic cost, large-scale water supply methods are not suitable for small-scale water supply in scattered rural areas, post-disaster and field emergency, military purposes, etc.

[0004] The total amount of water in the Earth's atmosphere is about 13,000 cubic kilometers, which is more than the total amount of water in surface rivers and wetlands. Even in arid deserts and inland areas, the atmospheric water content can reach 10 g / m 3 As a small-scale water supply supplement, air-to-water technology can solve the problem of limited drinking water access in some areas.

[0005] At the same time, solar energy is a clean energy source with a wide range of sources and is renewable. In recent years, research on air water collection using solar energy has gradually gained attention. Among them, some researchers use the method of cooling the air to reduce the temperature to below the dew point, so that water vapor is condensed to obtain fresh water resources. For example, application publication number CN 117188567 A discloses an air condensation water extraction device. A semiconductor refrigeration sheet is arranged on the top of the water extraction bin, connecting the cooling component in the water extraction bin and the heat dissipation component outside the water extraction bin. The condensed and liquefied water falls into the water extraction bin under gravity and wind force, achieving the purpose of condensation and water extraction. Authorization announcement number CN112413906B discloses an environmentally friendly air water extractor based on efficient condensation, which draws air into the air water extractor body through a wind fan, uses light energy to first heat up the air that has entered the air water extractor, and then cools it down by a cooling mechanism and the ground surface, and condenses the air to produce water.

[0006] Although when the humidity is high, a certain amount of liquid water can be obtained by cooling the air. However, in some areas with low humidity and low temperature, such as inland deserts (humidity is less than 40% all year round), air cooling water extraction technology will not work. Therefore, there is an urgent need for air water extraction technology with a wider range of applications. Adsorption air technology is a technology that places water vapor adsorbents in the atmosphere at night to complete adsorption, and uses sunlight to desorb during the day to complete desorption. The desorbed water vapor can be converted into clean liquid water after condensation. In recent years, the number of patent applications related to adsorbent air water extraction driven by solar energy has gradually increased. For example, application publication number CN 114039541 A discloses a solar photovoltaic panel cleaning device based on adsorption air water extraction, including an adsorption air water extraction module driven by a heat pump, a water collection module, a water delivery pump and a cleaning module. The cleaning module sprays water onto the solar panel to complete dust removal and cleaning operations. This invention uses natural energy to achieve dust removal and cleaning operations on solar panels, effectively alleviating water pressure in arid areas. Application publication number CN 113605494 A discloses a solar regenerative adsorption air water extraction device, which adopts silica sol-cured activated carbon fiber felt / lithium chloride + sodium acetate double salt adsorbent material, and utilizes the adsorption stage: the adsorbent material adsorbs water vapor in the air flowing through and the regeneration stage: the heat exchanger is heated to desorb the water in the solid adsorbent material into hot and humid air, which then flows through the condensing coil to condense and produce condensed water, thereby improving the overall water production of the device.

[0007] After the above introduction and related research, the existing devices that use solar energy to extract water from the air mainly have the following problems that need to be solved: the water extraction device has a low water extraction per unit mass of the adsorbent, a long system regeneration time (only one cycle is completed during the day and night), a small applicable humidity range and a low degree of automation of the device.

[0008] Therefore, it is necessary to redevelop and improve the existing defective air water intake device. Summary of the invention

[0009] In view of the shortcomings of the existing air water intake device, the present invention provides an air water intake device operating under full working conditions and a use method thereof.

[0010] According to the present invention, an air water extraction device operating under full working conditions includes a solar power supply unit, a salt water gel adsorption-desorption unit, an electric heating desorption unit, a water vapor condensation collection unit and a PID control unit. The solar power supply system includes a solar photovoltaic panel, an MPPT photovoltaic inverter and a battery, the salt water gel adsorption-desorption unit includes a hydrophilic porous hydrogel and a LiCl / CaCl2 composite adsorption material and a lifting device, the electric heating desorption unit is composed of a copper heat conduction plate and an electric heating plate loaded with adsorption material, the water vapor condensation collection unit is composed of four finned radiators, two semiconductor refrigeration plates and a water collection tank, the PID control unit is composed of a temperature and humidity sensor and a control circuit connected to the radiator and the front side of the adsorption bed, the hydrogel adsorbent is arranged on the front of the copper heat conduction plate, the condenser is placed in series with the adsorption-desorption unit, the two are internally connected to form an airflow channel, and the airflow is driven by a ventilation fan, and the water collection tank is arranged below the finned radiator to receive liquid water obtained by condensation of the refrigeration plate.

[0011] Furthermore, the solar power supply system adopts a modular design to provide power for the electric heating desorption unit, the water vapor condensation unit and the PID control unit. The current generated by the solar photovoltaic panel is stored in the battery through the photovoltaic inverter. The full name of the MPPT inverter is the maximum power point tracking controller. Compared with the traditional PWM (pulse width modulation) controller, the MPPT controller can work under more complex environmental conditions, including partial shadows and large temperature changes, and can still maintain efficient energy output, which is conducive to working under all working conditions.

[0012] Furthermore, the salt-loaded hydrogel adsorption bed is configured as a flat plate, the surface of the hydrogel adsorbent is rich in hydroxyl groups, and is in close contact with the heat-conducting copper plate through its own adhesion. The number of adsorption beds is adjustable, ranging from 1 to 10, and the thickness of the adsorption bed is between 0.2 and 5 mm.

[0013] Furthermore, the plurality of salt-loaded salt gel adsorption beds are placed in parallel and side by side, and a lifting device is installed at the bottom, so that each adsorption bed can independently complete the lifting process and perform the photothermal desorption process.

[0014] Furthermore, the electric heating plate in the electric heating desorption unit is a PI (polyimide) heating film, the product voltage range is 0.1-380 V, the surface operating temperature range is 40-180 ° C, and different desorption temperatures are maintained by adjusting the input voltage.

[0015] Furthermore, the surface of the finned radiator used in the water vapor condensation collection unit has been specially hydrophobicized, and the water contact angle is greater than 140 degrees, which is conducive to the rapid detachment of the condensed liquid water from the surface and entering the water collection tank below. The spacing between the cooling plates of the finned heat exchanger is 3mm, which is in full contact with the hot and humid air flowing through, thereby increasing the water production. In addition, the cooling plates and the hydrophobic surface are both environmentally friendly materials, avoiding secondary pollution of the liquid water.

[0016] Furthermore, the hot side of the semiconductor refrigeration used in the water vapor condensation collection unit is connected to a heat dissipation fin, and a heat dissipation fan is installed to control the speed for heat dissipation. Silicone grease is used to seal the heat dissipation fin and the semiconductor refrigeration plate and the excess part of the fin to reduce the influence of the heat dissipation section of the semiconductor refrigeration plate on the condensation water intake.

[0017] Furthermore, the present invention enriches water vapor in the environment through an efficient salt-loaded adsorbent packed bed, and drives desorption through solar thermal and electric heating. The desorbed high-humidity airflow condenses into liquid water after passing through a semiconductor-connected fin-type heat sink, and the air water extraction process is completed through the collector below.

[0018] Furthermore, a two-way exhaust fan is provided between the salt-loaded water gel adsorption-desorption unit, the electric heating desorption unit and the water vapor condensation collection unit to increase the air flow speed, improve the desorption and condensation effects and reduce the overall energy consumption.

[0019] Furthermore, the PID control unit is divided into a temperature control module, a humidity control module, an intermediate relay and a fan control module. The two patch thermocouples in the temperature control module are respectively connected to the controller, and the thermocouples are respectively used to detect and control the temperature of the refrigeration side of the desorption module and the condensation unit. The humidity control module is connected to two sensors on the inlet side and the condensation side to detect the air humidity on the inlet side and the refrigeration side. The intermediate relay is connected to the temperature control, humidity control and fan control modules to control the working state and time of the units inside the device. When the temperature of the heating plate and the refrigeration side thermocouple of the electric heating analysis unit reaches the preset temperature for a certain time, the relay disconnects from the power supply circuit.

[0020] Furthermore, heat insulation cotton and a light-shielding layer are provided between the water intake device and the external environment.

[0021] Furthermore, the method for preparing the salt-loaded salt gel adsorption bed comprises the following steps: Step S1, preparing agar / hygroscopic saline solution with a certain mass fraction, agar (Agar): lithium chloride (LICl) / calcium chloride (CaCl2): water = 1~10:1~40:100; Step S2, adding a certain mass fraction of graphene, carbon nanotubes, carbon black and other photothermal conversion materials to the agar / hygroscopic saline solution, wherein the mass fraction ranges from 0.1 to 1.5: aqueous solution; Step S3, after the solution is heated to 95°C, it is naturally cooled to room temperature to solidify for 12 hours, and then placed in a freeze drying oven (-75°C) to remove moisture; Step S4, placing the hydrogel material obtained after the above steps on a copper heat conductive sheet, and sealing it on all sides with silicone grease to obtain a salt-loaded hydrogel adsorption bed.

[0022] According to a method for using an air water extraction device operating under full working conditions provided by the present invention, the specific working process includes: Step S1, the first stage during the day: the photovoltaic panels receive energy from solar radiation during the day and convert it into electrical energy and store it in the battery. When the system needs electricity, the battery discharges it to ensure the normal operation of the system. At night, the salt-loaded adsorption bed after moisture absorption is moved upward by the lifting mechanism and desorbed under the photothermal effect of sunlight. At the same time, the water vapor condensation collection unit starts to supply power to collect the water vapor desorbed by the salt-loaded adsorption bed and store it in the water collection tank in the form of liquid water. Step S2, the second stage during the day: the temperature and humidity sensors at the inlet side receive relevant information and substitute it into the background program to obtain the absolute humidity AH (Absolute Humidity). When AH > 10 g / m 3 When AH < 10 g / m 3 When the exhaust fan brings the outside air into the salt water gel adsorption bed, the water vapor is captured by the adsorbent, and the remaining dry air is discharged from the device; Step S3, the third stage during the day: when the relative humidity RH (Relative Humidity) received on the condensation side is greater than 60%, the mechanism for controlling the lifting of the salt-loaded water gel adsorption bed starts to work, and the photothermal desorption and condensation process in step S1 is repeated; Step S4, the first stage at night: repeat the workflow of step S2; Step S5, the second stage at night: when the relative humidity RH received on the condensation side is greater than 60%, the electric heating plate controlling the electric heating desorption unit starts to supply power, and the operating temperature of the heating plate is 60°C. The condensation collection process in step S1 is repeated to obtain liquid water.

[0023] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention realizes atmospheric water collection through two methods: the enrichment of water vapor by a salt-loaded hydrogel adsorbent and the Peltier refrigeration effect of a semiconductor refrigeration sheet. Under low humidity conditions, adsorption-type water collection technology is used to achieve water vapor enrichment, and the desorption process of water vapor is completed by photothermal and electrothermal methods. The desorbed high-humidity air is transferred from an exhaust fan to a low-temperature heat sink to realize condensation into liquid water and collection. Under high humidity conditions, air containing water vapor directly passes through a fin-type heat sink connected to a semiconductor refrigeration sheet to achieve surface cooling and water extraction. The air water extraction device can achieve high water production rate air water extraction in the range of RH=15~100%.

[0024] 2. The design adopted by the present invention is simple and occupies a small area. The air water extraction process can be completely realized by relying on solar energy. Due to the adaptability to temperature and humidity, the energy utilization rate in the air water extraction process is greatly improved, and the overall energy consumption level of the system is low.

[0025] 3. The present invention can collaboratively or independently complete the desorption and regeneration of the adsorbent through photothermal and electric heating desorption, thereby improving the utilization rate and material properties of high-performance hydrogel salt-loaded adsorbents, and solving the problems of low water intake per unit mass of the adsorbent and long system regeneration time in existing water intake devices.

[0026] 4. The present invention adopts PID circuit and program automatic control, which can ensure that each unit is in the real-time optimal working condition. The device has a high degree of automation, and realizes more efficient operation of the water intake system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of a solar power supply module of an air water extraction device operating under full working conditions provided by the present invention.

[0028] Figure 2 This is an appearance diagram of the main part of the air water intake device provided by the present invention operating under full working conditions.

[0029] Figure 3 The present invention provides a preparation process and microscopic morphology of the hydrogel salt-loaded adsorbent.

[0030] Figure 4 A front view of the adsorption-desorption-condensation unit provided by the present invention.

[0031] Figure 5 A side view of an adsorption-desorption-condensation unit provided by the present invention.

[0032] Figure 6 A top view of the adsorption-desorption-condensation unit provided by the present invention.

[0033] Figure 7This is a schematic diagram of the structural setting of the adsorption-desorption-condensation unit provided by the present invention.

[0034] Figure 8 This is a schematic diagram of the structural setting of the salt-loaded water gel adsorption-desorption unit provided by the present invention.

[0035] Fig. 9 A schematic diagram of the operating condition control flow of the method for using the air water intake device operating under all operating conditions provided by the present invention.

[0036] As shown in the figure: Solar photovoltaic panel 1, MPPT photovoltaic inverter 2, battery 3, inlet temperature and humidity sensor 4, tightening buckle 5, adsorption bed slot 6, PI heating plate 7, hydrogel salt-loaded adsorption bed 8, aluminum alloy cooling fins 9, damping hinge 10, outlet temperature and humidity sensor 11, induced draft fan 12, semiconductor cooling plate 13, air-cooled radiator 14, adsorption bed lifting mechanism 15, 1 water collecting tank 16, thermal conductive copper sheet 17, salt-loaded salt gel adsorbent 18, silicone grease 19. DETAILED DESCRIPTION

[0037] The present invention is described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0038] In order to facilitate the understanding of the embodiments of the present invention, the following will be further explained with reference to the drawings by taking specific implementation modes as examples, and each implementation mode does not constitute a limitation on the embodiments of the present invention.

[0039] Specific implementation method 1: Figure 1 , 2 As shown in FIG. 8 , an air water extraction device and a method of using the device are provided according to the present invention. The device comprises a solar power supply unit ( Figure 1 )、Water-loaded hydrogel adsorption-desorption unit( Figure 8 ), electric heating desorption unit, water vapor condensation collection unit and PID control unit.

[0040] The solar power supply system comprises a solar photovoltaic panel (1), an MPPT photovoltaic inverter (2) and a storage battery (3); the water-carrying gel adsorption-desorption unit comprises an adsorption bed (7) composed of a hydrophilic porous hydrogel and a LiCl / CaCl2 composite adsorption material and a lifting device (14); the electric heating desorption unit comprises a copper heat conducting plate loaded with adsorption material and an electric heating plate; the water vapor condensation collection unit comprises four finned radiators, two semiconductor cooling plates and a water collecting tank; the PID control unit comprises a temperature and humidity sensor (4, 11) connected to the radiator and the front side of the adsorption bed and a control circuit.

[0041] The induced draft fan 12 is used to control the air to enter each unit to form an air flow channel.

[0042] After the PID control unit receives the collected signals from the inlet temperature and humidity sensor (4) and the outlet temperature and humidity sensor (11), the temperature and humidity sensing signal output ends of the sensors are connected to the controller in the control circuit, and then the output signal of the controller is connected to the signal input ends of the electric desorption heating module and the condensation collection module.

[0043] Through the above-mentioned unitized arrangement, the air water intake device of this embodiment forms an internal gas flow system connected to the external air and coordinated by the control system.

[0044] The air water extraction device operating under full working conditions described in this embodiment can use adsorbent-assisted or semiconductor refrigeration plate condensation to intermittently or collaboratively obtain fresh water resources from the surrounding atmospheric environment. Compared with the existing single water extraction method, the unit water extraction energy consumption is low and the water output is large. The various units of the present invention adopt a modular design to facilitate integration and portability. In addition, the present invention adopts PID automatic control, and the equipment can operate for a long time without anyone, with a high degree of automation, which improves the intelligence level of the air water extraction equipment.

[0045] Specific implementation method 2: This implementation method is a further description of the air water extraction device operating under full working conditions described in specific implementation method 1. The number of adsorption beds is 4, and the thickness of the adsorption beds is 5 mm.

[0046] The preparation method of the adsorbent packed bed (7) whose filling adsorption material is agar hydrogel + LiCl composite adsorption material comprises the following steps: Step S1, preparing a 15% mass fraction agar / hygroscopic saline solution, agar (Agar): lithium chloride (LICl): water = 5:15:75; Step S2, adding carbon nanotube material to the agar / hygroscopic saline solution at a mass fraction of 0.3: aqueous solution; Step S3, after the solution is heated to 95°C, it is naturally cooled to room temperature to solidify for 12 hours, and then placed in a freeze drying oven (-75°C) to remove moisture; Step S4, placing the hydrogel material obtained after the above steps on a copper heat conductive sheet, and sealing the surroundings with silicone grease to obtain a salt-loaded hydrogel adsorption bed.

[0047] Specific implementation method three: This implementation method is a further explanation of the air water intake device operating under full working conditions described in specific implementation method one. Four groups of airtight protection components (tightening buckles 5, damping hinges 10) are arranged on the outside of the water intake device, and are located 2.5 mm away from the top of the side. The two are matched with each other and can be manually sealed to prevent the obtained high-humidity gas from leaking into the surrounding air.

[0048] Specific implementation method 4: This implementation method is a further description of the air water extraction device operating under full working conditions described in specific implementation method 1. The surface temperature of the PI heating plate (6) in the electric heating desorption unit is set to 60°C.

[0049] Specific implementation method five: This implementation method is a further description of the air water extraction device operating under full working conditions described in specific implementation method one. The surface temperature of the aluminum alloy cooling fins (9) in the condensation collection unit is set to 10°C, the spacing between the cooling fins is 3mm, and the number of cooling fins is 34.

[0050] Specific implementation method 6: This implementation method adopts an air water extraction device and a method of use provided in specific implementation method 1 that operates under full working conditions. The air water extraction device is used as follows: Step S1, 6:00 am in the morning: the photovoltaic panel receives energy from solar radiation during the day and converts it into electrical energy and stores it in the battery. When the system needs electricity, the battery discharges it to ensure the normal operation of the system. At night, the salt-loaded adsorption bed after moisture absorption is moved upward by the lifting mechanism and desorbed under the photothermal effect of sunlight. At the same time, the water vapor condensation collection unit starts to supply power to collect the water vapor desorbed by the salt-loaded adsorption bed and store it in the water collection tank in the form of liquid water. Step S2, 11:00 am: the temperature and humidity sensors on the inlet side receive relevant information and substitute it into the background program to obtain the absolute humidity AH (Absolute Humidity). When AH>10 g / m3, the water vapor condensation collection unit is powered, and the external air is directly introduced into the cooling plate of the fin heat exchanger through the exhaust fan. The semiconductor refrigeration plate starts to be powered to collect water vapor in the external atmospheric environment and store it in the water collection tank in the form of liquid water; when AH<10 g / m3, the exhaust fan brings the external air into the salt water gel adsorption bed, and after the water vapor is captured by the adsorbent, the remaining dry air is discharged from the device; Step S3, after 14:00 pm: when the relative humidity RH (Relative Humidity) received on the condensation side is>60%, the mechanism for controlling the lifting of the salt water gel adsorption bed starts to work, and the photothermal desorption and condensation process in step S1 is repeated; Step S4, night 19:00 pm: repeat the workflow of step S2; Step S5, 22:00pm at night: When the relative humidity RH received on the condensation side is greater than 60%, the electric heating plate controlling the electric heating desorption unit starts to supply power, and the operating temperature of the heating plate is 60°C. The condensation collection process in step S1 is repeated to obtain liquid water.

[0051] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An air water extraction device and water extraction method operating under full working conditions, characterized in that: It includes a solar power supply unit, a salt water gel adsorption-desorption unit, an electric heating desorption unit, a water vapor condensation collection unit and a PID control unit; The solar power supply system comprises a solar photovoltaic panel (1), an MPPT photovoltaic inverter (2) and a storage battery (3), and supplies power to the entire water intake device; The hydrogel adsorption-desorption unit comprises a hydrophilic salt-carrying porous hydrogel (18), a copper heat-conducting plate (17), silicone grease (19) and an adsorption bed lifting structure (15). The hydrogel adsorbent (18) is bonded to the copper sheet by adhesive force. The silicone grease (19) is distributed around the copper sheet to prevent the hydrogel from leaking after moisture absorption. The lifting device (15) is used to lift and lower the hydrogel adsorption bed (8) so that all adsorbents can be desorbed one by one by solar energy. All adsorption beds (8) are inserted into the adsorption bed slots (6) to limit displacement and always remain perpendicular to the horizontal direction.

2. According to the preparation steps of the salt-loaded water gel adsorption bed, it is characterized in that: The preparation is carried out in the following specific steps: Step 1, preparing agar / hygroscopic saline solution with a certain mass fraction, agar (Agar): lithium chloride (LICl) / calcium chloride (CaCl2): water = 1~10:1~40:100; Step 2, adding a certain mass fraction of graphene, carbon nanotubes, carbon black and other photothermal conversion materials to the agar / hygroscopic saline solution, wherein the mass fraction ranges from 0.1 to 1.5: aqueous solution; Step 3, after the solution is heated to 95°C, it is naturally cooled to room temperature to solidify for 12 hours, and then placed in a freeze drying oven (-75°C) to remove moisture; Step S4, placing the hydrogel material obtained after the above steps on a copper heat conductive sheet, and sealing the surroundings with silicone grease to obtain a salt-loaded hydrogel adsorption bed.

3. The electric heating desorption unit is composed of a copper heat conducting plate (17) loaded with adsorption material and a PI electric heating sheet (7). The back of the PI electric heating sheet (7) is a glued surface so that it is tightly combined with the heat conducting copper sheet to reduce heat transfer losses.

4. The water vapor condensation collection unit is composed of two aluminum alloy cooling fins (9), an air-cooled radiator (14), a semiconductor cooling plate (13) and a water collecting tank (16). After the water vapor is condensed by the aluminum alloy cooling fins (9), it flows into the water collecting tank (16) for collection.

5. The condenser and the adsorption-desorption unit are placed in series, and the two are internally connected to form an air flow channel, and the air flow is driven by the ventilation fan. The water collection tank is arranged below the aluminum alloy refrigeration fins to receive the liquid water obtained by condensation of the refrigeration fins.

6. The PID control unit is composed of an inlet temperature and humidity sensor (4) and an outlet temperature and humidity sensor (11) connected to the radiator and the front side of the adsorption bed and a control circuit, and is used to control the working state and time between each unit, characterized in that: Specific steps of the air water extraction device and water extraction method operating under full working conditions.

7. According to a method for using an air water extraction device operating under full working conditions provided by the present invention, the specific working process includes: Step 1, the first stage during the day: during the day, the photovoltaic panels receive energy from solar radiation and convert it into electrical energy and store it in the battery. When the system needs electricity, the battery discharges the energy to ensure the normal operation of the system. At night, the salt-loaded adsorption bed after moisture absorption is moved upward by the lifting mechanism and desorbed under the photothermal effect of sunlight. At the same time, the water vapor condensation collection unit starts to supply power to collect the water vapor desorbed from the salt-loaded adsorption bed and store it in the water collection tank in the form of liquid water. Step 2, the second stage during the day: the temperature and humidity sensors at the inlet side receive relevant information and substitute it into the background program to obtain the absolute humidity AH (Absolute Humidity). When AH > 10 g / m 3 When AH < 10 g / m 3 When the exhaust fan brings the outside air into the salt water gel adsorption bed, the water vapor is captured by the adsorbent, and the remaining dry air is discharged from the device; Step 3, the third stage during the day: when the relative humidity RH (Relative Humidity) received on the condensation side is >60%, the mechanism for controlling the lifting of the salt-loaded water gel adsorption bed starts to work, and the photothermal desorption and condensation process in step S1 is repeated; Step 4, first stage at night: repeat the workflow of step S2; Step 5, the second stage at night: when the relative humidity RH received on the condensation side is >60%, the electric heating plate controlling the electric heating desorption unit starts to supply power, the working temperature of the heating plate is 60°C, and the condensation collection process in step S1 is repeated to obtain liquid water.

8. The air water extraction device and water extraction method operating under full working conditions according to claim 1, characterized in that: The number n of adsorption beds in the hydrogel adsorption-desorption unit is variable, and n is any number from 1 to 10.

9. The air water extraction device and water extraction method operating under full working conditions according to claim 1, characterized in that: The induced draft fan (12) is a servo motor fan, which can change the direction and magnitude of the current to change the wind direction and air volume.

10. An air water extraction device and water extraction method operating under full working conditions according to claims 1 and 2, characterized in that: The adsorbent material may also be, but is not limited to, zeolite, metal organic framework material (MOFs), silica gel, activated carbon, molecular sieve, or other high molecular weight hygroscopic materials.

11. An air water extraction device and water extraction method operating under full working conditions according to claims 1, 2, 3, and 4, characterized in that: The tightening buckle 5 and the damping hinge 10 interact with each other to ensure the air tightness of the air water intake device.

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