Continuous atmospheric water taking system driven by solar photovoltaic photo-thermal system

Abstract

The invention provides a continuous atmospheric water taking system driven by a solar photovoltaic photo-thermal system, which relates to the technical field of atmospheric water taking and comprises an energy module, an adsorption module, a desorption module, a condensation treatment module, a flow direction adjustment module, a state adjustment module, an upper moisture absorption device and a lower moisture absorption device, and the heat exchanger is respectively responsible for power supply heating, moisture absorption, desorption, condensation water storage and flow direction and working state adjustment. Adsorption / desorption modes of the moisture absorption device are switched through the state adjusting module according to the working stage and the air moisture volume, the flow direction adjusting module regulates and controls the flow direction of cold and hot water, the auxiliary heating device controls the temperature of the hot water tank and the like, continuous atmospheric water taking is achieved, and starting and stopping can be achieved according to the water level of the water storage tank.

Description

Technical Field

[0001] This invention relates to the field of atmospheric water intake technology, and more specifically, to a continuous atmospheric water intake system driven by a solar photovoltaic and photothermal system. Background Technology

[0002] With the global water shortage becoming increasingly severe, especially in arid and remote areas where water supply problems are becoming more prominent, utilizing atmospheric moisture for water extraction has become an important research direction. Solar energy, as a clean energy source, can achieve efficient energy utilization through photovoltaic and solar thermal systems, providing power support for atmospheric water extraction and driving the development of related technologies towards energy conservation and environmental protection.

[0003] In existing water resource acquisition technologies, freshwater collection mainly relies on natural precipitation or traditional water resource extraction and transportation. However, in arid or semi-arid regions, these methods are severely limited by climatic conditions and involve high transportation costs. While high-humidity areas such as islands and coastal regions have abundant air moisture content, existing technologies still face problems such as low system efficiency and complex equipment. For example, patent CN106906874B discloses an air-water harvesting device for islands, which uses a concentrated solution as the hygroscopic medium, regenerates the diluted solution by heating it with a solar collector, and recovers heat using a heat pump system. The dry air generated during the hygroscopic process is then used as fresh air for island buildings. Although this solution achieves freshwater acquisition in the high-humidity environment of islands, it has significant limitations in energy utilization, system complexity, and scenario adaptability. Some atmospheric water harvesting technologies rely on intermittent single-adsorption bed designs, which cannot meet continuous water supply requirements, resulting in poor system continuity and low material utilization. Existing technologies generally employ electric heating desorption or mechanical refrigeration for cooling. For example, CN106906874B relies on a heat pump system to recover heat from humid air, resulting in high energy consumption in off-grid scenarios and failing to achieve synergistic utilization of photovoltaic and solar thermal energy. At the engineering level, the device comprises multiple modules, including a concentrated solution water intake system, a solar collector, and a dilute solution dehydration system, connected by numerous valves and pipelines. This leads to a large equipment size, a high risk of pipeline leaks, significant solution stratification and corrosion issues, and requires specialized maintenance. Furthermore, the moisture absorption and regeneration processes are carried out in separate steps in different devices, resulting in "moisture absorption-regeneration" intervals. Daily water production relies on a high-humidity environment, making stable water production impossible in arid regions or on rainy days. The equipment lacks protective designs against environmental factors such as salt spray and particulate matter, leading to decreased reliability over long-term operation. More critically, the existing system neither effectively utilizes natural resources such as cold water sources nor uses intelligent control to match the rapid adsorption kinetics of porous moisture-absorbing materials. This prevents renewable energy sources such as photovoltaics / solar thermals from efficiently coordinating with the multi-module rotation strategy, ultimately creating a technical dilemma of "high complexity, low robustness, and weak continuity." Existing technologies lack automatic control mechanisms, requiring manual intervention for operations such as solution concentration adjustment. Moreover, they are only suitable for island scenarios and cannot be extended to arid and semi-arid regions, emergency water supply, and other fields, limiting their application scope.

[0004] Therefore, it is necessary to design a continuous atmospheric water intake system driven by a solar photovoltaic and photothermal system to solve the problems of low energy efficiency, discontinuous water intake, great influence from environmental factors, lack of flexible adjustment mechanism, and difficulty in adapting to different environments and continuous water supply in the existing technology. Summary of the Invention

[0005] In view of this, the present invention proposes a continuous atmospheric water intake system driven by a solar photovoltaic and photothermal system, which aims to solve the problems of discontinuous water intake, low energy utilization efficiency, great susceptibility to environmental factors and lack of flexible adjustment mechanism in the existing technology.

[0006] In one aspect, the present invention proposes a continuous atmospheric water intake system driven by a solar photovoltaic and photothermal system, comprising:

[0007] The energy module is used to power various devices using photovoltaic power generation units and to heat the hot water tank using auxiliary heating equipment;

[0008] An adsorption module is used to draw ambient air to the surface of the desiccant using a fan, to deliver cold water to the interior of the desiccant using a water pump, and to adsorb moisture from the air through the desiccant.

[0009] The desorption module is used to use a water pump to transport hot water from the hot water tank to the interior of the dehumidification device, and to transport the water vapor obtained by vaporizing the air moisture to the condensation coil.

[0010] The condensation module is used to use a water pump to deliver cold water to the condensation coil and to deliver the air condensate obtained by liquefying the air water vapor to the water storage tank.

[0011] The flow direction adjustment module is used to connect the hot water tank, water pump and the desiccant using a three-way valve, and to adjust the flow direction of cold water and hot water based on the working status of the desiccant.

[0012] The status adjustment module is used to adjust the working status of the moisture absorption device based on the working stage of the water intake system and the volume of air moisture.

[0013] The water intake system is symmetrically equipped with two moisture-absorbing devices, namely an upper moisture-absorbing device and a lower moisture-absorbing device.

[0014] Furthermore, adjusting the flow direction of cold and hot water based on the operating state of the moisture-absorbing device includes:

[0015] The operating states include: adsorption mode and desorption mode;

[0016] When the working state is the adsorption mode, the inlet of the moisture absorption device and the outlet of the water pump are connected through a three-way valve, and the outlet of the moisture absorption device and the inlet of the water pump are connected through another three-way valve, so as to continuously circulate cold water in the moisture absorption device.

[0017] When the working state is the desorption mode, the inlet of the desiccant and the outlet of the hot water tank are connected through a three-way valve, and the outlet of the desiccant and the inlet of the hot water tank are connected through another three-way valve, so as to continuously circulate the hot water in the desiccant.

[0018] Furthermore, when adjusting the operating state of the moisture absorption device based on the operating stage of the water intake system and the volume of air moisture, the following steps are included:

[0019] The work phases include: a first work phase and a second work phase;

[0020] When the water intake system is in the first working stage, if the air moisture volume is greater than or equal to the second air moisture volume threshold, then the upper moisture absorption device and the lower moisture absorption device are both adjusted to the desorption mode.

[0021] When the water intake system is in the first working stage, if the air moisture volume is less than the second air moisture volume threshold, then both the upper moisture absorption device and the lower moisture absorption device are adjusted to the adsorption mode.

[0022] Further, when both the upper moisture absorption device and the lower moisture absorption device are adjusted to the desorption mode, the following is included:

[0023] When the air moisture volume of both the upper and lower moisture absorption devices is less than or equal to the first air moisture volume threshold, the working state of the upper moisture absorption device is adjusted to the adsorption mode, and the lower moisture absorption device is stopped from working.

[0024] Further, when adjusting the working state of the upper moisture-absorbing device to the adsorption mode and stopping the lower moisture-absorbing device from working, the following steps are included:

[0025] When the air moisture volume of the upper moisture absorption device is greater than or equal to the second air moisture volume threshold, the water intake system enters the second working stage.

[0026] Further, when both the upper moisture-absorbing device and the lower moisture-absorbing device are adjusted to the adsorption mode, the following is included:

[0027] When the air moisture volume of both the upper and lower moisture absorption devices is greater than or equal to the second air moisture volume threshold, the working state of the upper moisture absorption device is adjusted to the desorption mode, while the working state of the lower moisture absorption device remains unchanged in the adsorption mode.

[0028] Further, when adjusting the operating state of the upper moisture absorption device to the desorption mode and keeping the operating state of the lower moisture absorption device unchanged in the adsorption mode, the following is included:

[0029] When the air moisture volume of the upper moisture absorption device is less than or equal to the first air moisture volume threshold, the water intake system enters the second working stage.

[0030] Furthermore, when the water intake system enters the second working stage, it includes:

[0031] When the air moisture volume of the moisture absorption device is greater than or equal to the second air moisture volume threshold, the working state of the moisture absorption device is adjusted to the desorption mode until the air moisture volume of the moisture absorption device is less than or equal to the first air moisture volume threshold.

[0032] When the air moisture volume of the moisture absorption device is less than or equal to the first air moisture volume threshold, the working state of the moisture absorption device is adjusted to the adsorption mode until the air moisture volume of the moisture absorption device is greater than or equal to the second air moisture volume threshold.

[0033] Furthermore, when using auxiliary heating equipment to heat the hot water tank, it includes:

[0034] When the water temperature in the hot water tank is lower than the temperature threshold, the auxiliary heating device will start heating.

[0035] When the water temperature in the hot water tank is greater than or equal to the temperature threshold, the auxiliary heating equipment stops heating.

[0036] Furthermore, when transporting the air condensate obtained by liquefying the air water vapor to the water storage tank, the process includes:

[0037] When the water level in the storage tank is greater than or equal to the water level threshold, the water intake system stops working.

[0038] When the water level in the storage tank is lower than the water level threshold, water will continue to be supplied to the storage tank.

[0039] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0040] (1) Significantly improved continuous operation efficiency: The dual moisture absorption device adopts a parallel circulation mechanism of "moisture absorption-desorption". By switching the fluid flow direction through the valve system, it ensures that at any given time, one module is in a high-efficiency moisture absorption state, while the other module completes desorption and regeneration simultaneously. Compared with traditional single-bed equipment, this device can achieve continuous water production 24 hours a day, and the daily water production efficiency is improved.

[0041] (2) Significantly optimized energy consumption: The photovoltaic power generation system not only supplies power to equipment such as fans and water pumps, but also preheats the water in the hot water tank through photothermal conversion, reducing the energy consumption of electric heating in the desorption process. At night or on cloudy days, the battery prioritizes the operation of core equipment, and auxiliary heating is only activated when necessary, resulting in a lower overall energy consumption compared to traditional solutions. In addition, the low-temperature characteristics of cold water are used to directly cool the adsorption module, replacing the traditional compressor refrigeration method and reducing energy consumption.

[0042] (3) Strong environmental adaptability and high stability: The surface of the finned tube is coated with a porous moisture-absorbing material, which can still maintain a certain water vapor adsorption capacity in the salt spray environment. In coastal scenarios, it can directly extract high humidity air above the sea surface, and with the help of axial flow fans for forced convection, the moisture absorption efficiency is improved compared with the dry inland environment. Attached Figure Description

[0043] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0044] Figure 1 Functional block diagram of a continuous atmospheric water intake system driven by a solar photovoltaic and photothermal system provided in an embodiment of the present invention;

[0045] Figure 2 A schematic diagram of a solar photovoltaic and photothermal system-driven atmospheric water intake system provided in an embodiment of the present invention;

[0046] Figure 3 This is a schematic diagram of the alternating cycle of the adsorption module and the desorption module provided in an embodiment of the present invention. Detailed Implementation

[0047] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the invention to those skilled in the art. It should be noted that, without conflict, the embodiments and features described herein can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0048] Reference Figure 1 As shown in some embodiments of this application, a continuous atmospheric water intake system driven by a solar photovoltaic and photothermal system includes:

[0049] The energy module is used to power various devices using photovoltaic power generation units and to heat the hot water tank using auxiliary heating equipment;

[0050] An adsorption module is used to draw ambient air to the surface of the desiccant using a fan, to deliver cold water to the interior of the desiccant using a water pump, and to adsorb moisture from the air through the desiccant.

[0051] The desorption module is used to use a water pump to transport hot water from the hot water tank to the interior of the dehumidification device, and to transport the water vapor obtained by vaporizing the air moisture to the condensation coil.

[0052] The condensation module is used to use a water pump to deliver cold water to the condensation coil and to deliver the air condensate obtained by liquefying the air water vapor to the water storage tank.

[0053] The flow direction adjustment module is used to connect the hot water tank, water pump and the desiccant using a three-way valve, and to adjust the flow direction of cold water and hot water based on the working status of the desiccant.

[0054] The status adjustment module is used to adjust the working status of the moisture absorption device based on the working stage of the water intake system and the volume of air moisture.

[0055] The water intake system is symmetrically equipped with two moisture-absorbing devices, namely an upper moisture-absorbing device and a lower moisture-absorbing device.

[0056] Specifically, the energy module includes a photovoltaic power generation unit and auxiliary heating equipment. The photovoltaic power generation unit converts solar energy into electrical energy through the photoelectric effect, directly driving electrical equipment such as axial fans and water pumps. It also supplies power to the system and connects to an energy storage battery to store excess electrical energy. Furthermore, it utilizes solar thermal energy to heat cold water, providing a source of hot water. The auxiliary heating equipment is connected to a hot water tank and activates when sunlight is insufficient, maintaining water temperature as a heat source for the desorption of porous hygroscopic materials, ensuring the temperature conditions required for the desorption process. At night or on cloudy days with insufficient sunlight, the photovoltaic power generation unit stops operating. At this time, the battery pack, charged by the photovoltaic system during the day, begins to discharge, providing continuous power to core equipment such as the axial fans, water pumps, intelligent valve systems, and controllers, maintaining basic system operation. If the water temperature in the hot water tank drops due to continuous use, the auxiliary heating equipment automatically activates to replenish heat, ensuring a stable heat source temperature required for the desorption process and guaranteeing continuous water production.

[0057] Specifically, the desiccant device consists of a finned tube array. The fin surfaces are coated with a porous desiccant material, and the front end is equipped with a fan (axial flow fan) and an air filter. The axial flow fan forces ambient air in and directs it across the fin surface coated with the porous desiccant material. When cold water is introduced into the finned tube array, the porous desiccant material exhibits high adsorption capacity at low temperatures, capturing and storing water molecules in the air through its pore structure. When hot water is introduced, the porous desiccant material absorbs heat and desorbs, releasing the stored water molecules to form water vapor. The desorbed water vapor enters the condensation module and contacts the surface of the condensation coil. Inside the condensation coil, cold water supplied by a water pump flows through. The water vapor liquefies after heat exchange with the cold water on the surface of the condensation coil, forming air condensate, which is guided by a guide plate and flows into a water storage tank. The condensation module includes a water pump, a condensation coil, and a water storage tank. The water pump draws in cold water, with a stainless steel filter screen at the inlet. After filtration, the water is introduced into the finned tube array of the adsorption unit for cooling, and another path flows directly into the condensation coil as a condensing medium. The water vapor generated by desorption exchanges heat with cold water on the outer wall of the condenser coil. The temperature drops below the dew point and liquefies into liquid water, which is then collected by the guide plate and flows into the water storage tank for storage.

[0058] Specifically, the flow direction adjustment module includes a three-way valve assembly connecting the hot water tank, water pump, and upper and lower moisture absorption devices. By controlling the alternating flow of cold and hot water into the upper and lower moisture absorption devices, the moisture absorption and desorption cycles are achieved. When cold water flows into the upper fins, the upper layer operates in adsorption mode, while hot water flows into the lower fins, and the lower layer operates in desorption mode. The water vapor generated during desorption is sent to the condenser coil through pipes, where it is cooled and liquefied by cold water and stored in the water storage tank. By switching the fluid type of the upper and lower moisture absorption devices through valves, it is ensured that the upper and lower layers are in the moisture absorption and desorption states respectively at any given time, forming a continuous closed loop of "moisture absorption-desorption-condensation-water storage" to avoid the intermittent shutdown problem of traditional single-bed systems. The three-way valve is an intelligent valve that performs key switching actions under the command of the PLC controller. The PLC controller obtains information such as the air moisture volume of the moisture absorption device, the water temperature of the hot water tank, and the water level of the storage tank (this information is detected by the corresponding sensors and transmitted to the PLC). After logical judgment, it sends an electrical signal command to the three-way valve. After receiving the electrical signal, the three-way valve changes the position of its internal valve core, thereby switching the flow direction of cold water and hot water and realizing the switching of the working state of the moisture absorption device.

[0059] Specifically, the water pump inlet is equipped with a fine stainless steel filter screen to intercept particulate impurities. All pipes and finned tubes in contact with cold water are made of corrosion-resistant materials and coated with an anti-corrosion coating, significantly extending the service life of the equipment in harsh salt spray environments. Meanwhile, the axial fan at the front end of each adsorption unit is equipped with an air filter to effectively filter airborne particles, protecting the surface of the porous moisture-absorbing material and maintaining its long-term adsorption performance.

[0060] Understandably, the system utilizes a solar photovoltaic and photothermal system to achieve continuous atmospheric water intake, which is energy-saving and environmentally friendly. It features two layers of moisture absorption devices, and a state adjustment module that switches between adsorption / desorption modes based on the working stage and air moisture volume, improving the continuity and efficiency of water intake. A flow direction adjustment module uses a three-way valve to flexibly regulate the flow of hot and cold water, adapting to different working conditions. Auxiliary heating equipment ensures the temperature of the hot water tank, and the condensation treatment module efficiently stores water and can be activated and deactivated based on the water level in the storage tank, enhancing the system's adaptability and stability.

[0061] Reference Figure 2-3 As shown, in some embodiments of this application, adjusting the flow direction of cold water and hot water based on the operating state of the moisture-absorbing device includes:

[0062] The operating states include: adsorption mode and desorption mode;

[0063] When the working state is the adsorption mode, the inlet of the moisture absorption device and the outlet of the water pump are connected through a three-way valve, and the outlet of the moisture absorption device and the inlet of the water pump are connected through another three-way valve, so as to continuously circulate cold water in the moisture absorption device.

[0064] When the working state is the desorption mode, the inlet of the desiccant and the outlet of the hot water tank are connected through a three-way valve, and the outlet of the desiccant and the inlet of the hot water tank are connected through another three-way valve, so as to continuously circulate the hot water in the desiccant.

[0065] Understandably, the regulations specify a method for adjusting the flow direction of hot and cold water based on the working state (adsorption / desorption mode) of the moisture absorption device. The water flow path is precisely switched through a three-way valve to ensure that cold water circulates during adsorption and hot water circulates during desorption, providing a suitable medium environment for different working modes and ensuring the efficient operation of the adsorption and desorption processes.

[0066] In some embodiments of this application, adjusting the operating state of the moisture absorption device based on the operating stage of the water intake system and the volume of air moisture includes:

[0067] The work phases include: a first work phase and a second work phase;

[0068] When the water intake system is in the first working stage, if the air moisture volume is greater than or equal to the second air moisture volume threshold, then the upper moisture absorption device and the lower moisture absorption device are both adjusted to the desorption mode.

[0069] When the water intake system is in the first working stage, if the air moisture volume is less than the second air moisture volume threshold, then both the upper moisture absorption device and the lower moisture absorption device are adjusted to the adsorption mode.

[0070] Specifically, the first air moisture volume threshold is a critical value obtained by detecting the minimum air moisture volume that the moisture absorption device can release in desorption mode; the second air moisture volume threshold is a critical value obtained by detecting the maximum air moisture volume that the moisture absorption device can adsorb in adsorption mode, and the second air moisture volume threshold is greater than the first air moisture volume threshold; the first working stage is the initial operation stage of the water intake system. When the water intake system starts working, the air moisture volume of the upper moisture absorption device and the lower moisture absorption device is the same. Therefore, at this time, the same air moisture volume is used to adjust the working state of the upper moisture absorption device and the lower moisture absorption device to be the same. In the second working stage of the water intake system, the working states of the upper moisture absorption device and the lower moisture absorption device are always opposite.

[0071] Understandably, for the first working stage, the working state of the upper and lower moisture absorption devices is adjusted according to the volume of air moisture. When the moisture content is greater than or equal to the second threshold, desorption occurs, and when it is less than the threshold, adsorption occurs. This can match the environmental moisture conditions, optimize the working state in the initial stage, and improve water extraction efficiency.

[0072] In some embodiments of this application, when both the upper moisture-absorbing device and the lower moisture-absorbing device are in the desorption mode, the following is included:

[0073] When the air moisture volume of both the upper and lower moisture absorption devices is less than or equal to the first air moisture volume threshold, the working state of the upper moisture absorption device is adjusted to the adsorption mode, and the lower moisture absorption device is stopped from working.

[0074] Understandably, when both the upper and lower layers are in desorption mode and the water volume is less than or equal to the first threshold, the upper layer is switched to adsorption mode and the lower layer stops working to avoid ineffective operation. The upper layer continues to absorb moisture to improve the utilization rate of the device and maintain the system's continuous water intake capacity.

[0075] In some embodiments of this application, adjusting the operating state of the upper moisture-absorbing device to the adsorption mode and stopping the lower moisture-absorbing device from operating includes:

[0076] When the air moisture volume of the upper moisture absorption device is greater than or equal to the second air moisture volume threshold, the water intake system enters the second working stage.

[0077] It is understandable that the system enters the second working stage when the moisture volume of the upper moisture absorption device is greater than or equal to the second threshold. Clear stage switching conditions are set to ensure that the system can switch to the next stage in a timely manner after sufficient moisture absorption, thus ensuring a continuous working rhythm.

[0078] In some embodiments of this application, when both the upper moisture-absorbing device and the lower moisture-absorbing device are adjusted to the adsorption mode, the following is included:

[0079] When the air moisture volume of both the upper and lower moisture absorption devices is greater than or equal to the second air moisture volume threshold, the working state of the upper moisture absorption device is adjusted to the desorption mode, while the working state of the lower moisture absorption device remains unchanged in the adsorption mode.

[0080] Understandably, when both the upper and lower layers are in adsorption mode and the water volume is greater than or equal to the second threshold, the upper layer is switched to desorption mode while the lower layer remains in adsorption mode, thus achieving parallel adsorption and desorption, avoiding water intake interruption, and improving the continuous working efficiency of the system.

[0081] In some embodiments of this application, when the operating state of the upper moisture-absorbing device is adjusted to the desorption mode, and the operating state of the lower moisture-absorbing device is kept unchanged in the adsorption mode, the following is included:

[0082] When the air moisture volume of the upper moisture absorption device is less than or equal to the first air moisture volume threshold, the water intake system enters the second working stage.

[0083] Understandably, the system enters the second working stage when the upper moisture absorption device desorbs moisture to a level less than or equal to the first threshold. The stage switching is triggered by the degree of desorption completion to ensure sufficient desorption and optimize the workflow.

[0084] In some embodiments of this application, when the water intake system enters the second working stage, it includes:

[0085] When the air moisture volume of the moisture absorption device is greater than or equal to the second air moisture volume threshold, the working state of the moisture absorption device is adjusted to the desorption mode until the air moisture volume of the moisture absorption device is less than or equal to the first air moisture volume threshold.

[0086] When the air moisture volume of the moisture absorption device is less than or equal to the first air moisture volume threshold, the working state of the moisture absorption device is adjusted to the adsorption mode until the air moisture volume of the moisture absorption device is greater than or equal to the second air moisture volume threshold.

[0087] It is understandable that clearly defining the rules for switching the working state of the desiccant based on the moisture volume in the second working stage enables the device to dynamically adapt to its own moisture content, ensuring orderly alternation of adsorption and desorption, and maintaining continuous and stable water intake.

[0088] In some embodiments of this application, heating a hot water tank using an auxiliary heating device includes:

[0089] When the water temperature in the hot water tank is lower than the temperature threshold, the auxiliary heating device will start heating.

[0090] When the water temperature in the hot water tank is greater than or equal to the temperature threshold, the auxiliary heating equipment stops heating.

[0091] Specifically, the temperature threshold is the critical value for heating the hot water tank, determined by combining ambient humidity and the desorption requirements of porous moisture-absorbing materials.

[0092] Understandably, by using auxiliary heating equipment to start and stop heating according to the water temperature in the hot water tank, the water temperature can be precisely controlled, ensuring stable desorption efficiency, while reducing energy waste and improving the system's energy efficiency.

[0093] In some embodiments of this application, when transporting the air condensate obtained by liquefying the air water vapor to the water storage tank, the following steps are included:

[0094] When the water level in the storage tank is greater than or equal to the water level threshold, the water intake system stops working.

[0095] When the water level in the storage tank is lower than the water level threshold, water will continue to be supplied to the storage tank.

[0096] Specifically, the water level threshold is the critical water level at which the water tank stops supplying water or continues to supply water, determined based on the water tank capacity and water demand.

[0097] Understandably, the system starts and stops based on the water level control of the storage tank to prevent overflow when the water level is too high, and to continue supplying water when the water level is low, thus ensuring the safe and stable operation of the system and enabling water to be drawn on demand.

[0098] It should be noted that:

[0099] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of this application may be practiced without these specific details. In some instances, well-known structures and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0100] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features from different embodiments are meant to be within the scope of this application and form different embodiments.

[0101] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A continuous atmospheric water intake system driven by a solar photovoltaic and photothermal system, characterized in that, include: The energy module is used to power various devices using photovoltaic power generation units and to heat the hot water tank using auxiliary heating equipment; An adsorption module is used to draw ambient air to the surface of the desiccant using a fan, to deliver cold water to the interior of the desiccant using a water pump, and to adsorb moisture from the air through the desiccant. The desorption module is used to use a water pump to transport hot water from the hot water tank to the interior of the dehumidification device, and to transport the water vapor obtained by vaporizing the air moisture to the condensation coil. The condensation module is used to use a water pump to deliver cold water to the condensation coil and to deliver the air condensate obtained by liquefying the air water vapor to the water storage tank. The flow direction adjustment module is used to connect the hot water tank, water pump and the desiccant using a three-way valve, and to adjust the flow direction of cold water and hot water based on the working status of the desiccant. The status adjustment module is used to adjust the working status of the moisture absorption device based on the working stage of the water intake system and the volume of air moisture. The water intake system is symmetrically equipped with two moisture-absorbing devices, namely an upper moisture-absorbing device and a lower moisture-absorbing device.

2. The continuous atmospheric water intake system driven by a solar photovoltaic and photothermal system according to claim 1, characterized in that, When adjusting the flow direction of cold and hot water based on the operating state of the moisture absorption device, the following steps are included: The operating states include: adsorption mode and desorption mode; When the working state is the adsorption mode, the inlet of the moisture absorption device and the outlet of the water pump are connected through a three-way valve, and the outlet of the moisture absorption device and the inlet of the water pump are connected through another three-way valve, so as to continuously circulate cold water in the moisture absorption device. When the working state is the desorption mode, the inlet of the desiccant and the outlet of the hot water tank are connected through a three-way valve, and the outlet of the desiccant and the inlet of the hot water tank are connected through another three-way valve, so as to continuously circulate the hot water in the desiccant.

3. A continuous atmospheric water intake system driven by a solar photovoltaic and photothermal system according to claim 2, characterized in that, When adjusting the operating state of the desiccant based on the operating stage of the water intake system and the volume of air moisture, the following are included: The work phases include: a first work phase and a second work phase; When the water intake system is in the first working stage, if the air moisture volume is greater than or equal to the second air moisture volume threshold, then the upper moisture absorption device and the lower moisture absorption device are both adjusted to the desorption mode. When the water intake system is in the first working stage, if the air moisture volume is less than the second air moisture volume threshold, then both the upper moisture absorption device and the lower moisture absorption device are adjusted to the adsorption mode.

4. A continuous atmospheric water intake system driven by a solar photovoltaic and photothermal system according to claim 3, characterized in that, When both the upper and lower moisture-absorbing devices are adjusted to the desorption mode, the following is included: When the air moisture volume of both the upper and lower moisture absorption devices is less than or equal to the first air moisture volume threshold, the working state of the upper moisture absorption device is adjusted to the adsorption mode, and the lower moisture absorption device is stopped from working.

5. A continuous atmospheric water intake system driven by a solar photovoltaic and photothermal system according to claim 4, characterized in that, When adjusting the working state of the upper moisture-absorbing device to the adsorption mode and stopping the lower moisture-absorbing device from working, the following steps are included: When the air moisture volume of the upper moisture absorption device is greater than or equal to the second air moisture volume threshold, the water intake system enters the second working stage.

6. A continuous atmospheric water intake system driven by a solar photovoltaic and photothermal system according to claim 3, characterized in that, When both the upper and lower moisture-absorbing devices are adjusted to the adsorption mode, the following steps are included: When the air moisture volume of both the upper and lower moisture absorption devices is greater than or equal to the second air moisture volume threshold, the working state of the upper moisture absorption device is adjusted to the desorption mode, while the working state of the lower moisture absorption device remains unchanged in the adsorption mode.

7. A continuous atmospheric water intake system driven by a solar photovoltaic and photothermal system according to claim 6, characterized in that, When adjusting the operating state of the upper moisture absorption device to the desorption mode and keeping the operating state of the lower moisture absorption device unchanged in the adsorption mode, the following is included: When the air moisture volume of the upper moisture absorption device is less than or equal to the first air moisture volume threshold, the water intake system enters the second working stage.

8. A continuous atmospheric water intake system driven by a solar photovoltaic and photothermal system according to any one of claims 5 or 7, characterized in that, When the water intake system enters the second working stage, it includes: When the air moisture volume of the moisture absorption device is greater than or equal to the second air moisture volume threshold, the working state of the moisture absorption device is adjusted to the desorption mode until the air moisture volume of the moisture absorption device is less than or equal to the first air moisture volume threshold. When the air moisture volume of the moisture absorption device is less than or equal to the first air moisture volume threshold, the working state of the moisture absorption device is adjusted to the adsorption mode until the air moisture volume of the moisture absorption device is greater than or equal to the second air moisture volume threshold.

9. A continuous atmospheric water intake system driven by a solar photovoltaic and photothermal system according to claim 8, characterized in that, When using auxiliary heating equipment to heat a hot water tank, the following are included: When the water temperature in the hot water tank is lower than the temperature threshold, the auxiliary heating device will start heating. When the water temperature in the hot water tank is greater than or equal to the temperature threshold, the auxiliary heating equipment stops heating.

10. A continuous atmospheric water intake system driven by a solar photovoltaic and photothermal system according to claim 9, characterized in that, When transporting the air condensate obtained by liquefying the air water vapor to the water storage tank, the process includes: When the water level in the storage tank is greater than or equal to the water level threshold, the water intake system stops working. When the water level in the storage tank is lower than the water level threshold, water will continue to be supplied to the storage tank.

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