Unpowered water vapor condensation collection device in arid regions
By designing a non-powered water vapor condensation and collection device for arid regions, and adopting a detachable structure and biomimetic coating, combined with fan and control components, the problem of complex installation and difficult maintenance of existing devices in desert environments has been solved, achieving efficient and low-cost water vapor condensation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANGTZE ECOLOGY & ENVIRONMENT CO LTD
- Filing Date
- 2025-07-09
- Publication Date
- 2026-05-29
AI Technical Summary
Existing water vapor capture devices are not suitable for harsh environments such as deserts. They are complex to install and difficult to maintain, costly, and most require a power supply, making large-scale application difficult.
A non-powered water vapor condensation and collection device for arid regions was designed. It adopts a detachable structure and utilizes a biomimetic coating and a fan assembly for condensation. Water vapor condensation is achieved through the hydrophilic and hydrophobic coating structure of the biomimetic coating and the fan assembly that does not require electricity. Combined with a control component, it is automatically controlled and adaptable to various environments.
It achieves easy installation and maintenance of water vapor condensation, improves water intake efficiency, adapts to various environments, reduces costs, and does not require an external power supply, thus improving the applicability and automation of the device.
Smart Images

Figure CN224300090U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of air water collection devices, specifically a non-powered water vapor condensation and collection device for arid regions. Background Technology
[0002] In arid regions such as the Gobi Desert, the average annual rainfall is low and evaporation is high, resulting in poor soil water retention and making it difficult for plants to grow. Seedlings and grasses planted for sand control often fail to survive due to lack of water.
[0003] Currently, seedlings and grasses planted for artificial desertification control are typically watered manually. Water is usually supplied in two ways: one is by transporting the water directly to the designated watering point, and the other is by constructing water storage facilities near the watering point and replenishing the water periodically by transport vehicles. However, both methods require regular transport by vehicles, resulting in high costs and limited coverage.
[0004] Currently available water vapor capture devices are limited in variety and applicable to specific conditions. For example, fog nets are typically only suitable for foggy and arid regions, while active water vapor condensation devices are expensive, difficult to power, and require complex maintenance, hindering large-scale deployment. Furthermore, most devices are integrated and complex in structure, making installation difficult to adapt to local conditions. Therefore, there is a need for a low-cost water vapor condensation device that requires no electrical wiring, is widely applicable, and is easy to maintain. Utility Model Content
[0005] This invention provides a non-powered water vapor condensation and collection device for arid regions, aiming to solve the problems that existing water intake devices are not suitable for harsh environments such as deserts, and are complicated to install and difficult to maintain.
[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0007] A non-powered water vapor condensation and collection device for arid regions includes a collection assembly. The top of the collection assembly is detachably provided with an outer cylinder. The top of the side wall of the outer cylinder is provided with several air inlet slots, and the bottom of the side wall of the outer cylinder is provided with several air outlet slots. Several condensation assemblies are assembled along the axial direction inside the outer cylinder. Several condensation plates are detachably provided on each condensation assembly. The top of the outer cylinder is detachably provided with a top cover. A fan assembly is provided at the bottom center of the top cover. The airflow of the fan assembly points from the top of the outer cylinder to the collection assembly.
[0008] Preferably, the collection assembly includes a water collection boss located in the middle of the chassis, an outer cylinder sleeved on the outside of the water collection boss and supported on the chassis, a downwardly recessed water collection trough located in the middle of the water collection boss, the water collection trough being connected to a water storage device through a water outlet pipe, a threaded metal rod located in the middle of the water collection trough, and at least three support feet arranged at equal intervals around the bottom of the chassis.
[0009] More preferably, each of the condensation components includes a hollow cylindrical plate mounting frame and several condensation plates evenly distributed around an axis. The condensation plates are all arranged vertically in the radial direction. The top of the plate mounting frame is provided with several opening slots that correspond one-to-one with the condensation plates. Connecting columns are provided concentrically and coaxially inside the plate mounting frame. The outer wall of the connecting column is fixedly connected to the inner wall of the plate mounting frame through a connecting block. The top of the connecting column is provided with a threaded column, and the bottom of the connecting column is provided with a threaded hole. The threaded column and the threaded metal rod are both threadedly engaged with the threaded hole.
[0010] Furthermore, a T-shaped second limiting block is provided on the top of one side of the condensing plate. The vertical part of the second limiting block is parallel to and connected to the condensing plate, and the horizontal part of the second limiting block is perpendicular to the condensing plate. The vertical part of the second limiting block is embedded in the corresponding opening groove, and the horizontal part of the second limiting block forms a limiting fit with the inner wall of the plate mounting frame. The side of the condensing plate near the plate mounting frame forms a limiting fit with the outer wall of the plate mounting frame.
[0011] Furthermore, the surface of the condenser plate is provided with biomimetic coating patches that are uniformly arranged and spaced apart.
[0012] Specifically, the biomimetic coating patch includes a regular hexagonal hydrophobic coating, with a circular hydrophilic coating superimposed on the middle of the hydrophobic coating, and the hydrophilic coating is contained within the range of the hydrophobic coating. The biomimetic coating patch is arranged in a honeycomb structure, and there are gaps between adjacent biomimetic coating patches.
[0013] More specifically, the air inlet slots are evenly distributed around the central axis of the outer cylinder, all air inlet slots are arranged radially, and the top of each air inlet slot is open.
[0014] The air outlet slots are evenly distributed around the central axis of the outer cylinder, and all air outlet slots are arranged radially.
[0015] In detail, the top cover is a conical hollow shell formed by assembling a cover body and a flat plate. A mounting boss is provided at the bottom center of the flat plate. The mounting boss is embedded in the top opening of the outer cylinder to form a snap-fit. A number of first limiting blocks are provided at equal intervals around the outside of the mounting boss. The first limiting blocks are embedded in the corresponding air inlet slot along the opening of the air inlet slot to form a limiting fit.
[0016] More specifically, the fan assembly includes a motor located inside the top cover. The output shaft of the motor passes through the mounting boss and is coaxially linked with one end of the fan's rotating shaft. A fan bracket is located below the fan. A threaded hole is located at the bottom center of the fan bracket and forms a threaded engagement with the threaded post of the topmost condenser assembly. The other end of the fan's rotating shaft forms a rotational engagement with the top center of the fan bracket through a bearing.
[0017] Preferably, the top cover is provided with a control component, which includes a battery, a controller, a temperature sensor and a humidity sensor. The motor, battery, temperature sensor and humidity sensor are all electrically connected to the controller. The sensing ends of the temperature sensor and humidity sensor are both installed through the mounting boss located at the top opening of the outer cylinder.
[0018] The beneficial effects of this utility model are:
[0019] 1. The entire device is assembled, making it easy to install, disassemble, and maintain;
[0020] 2. The condenser components are installed sequentially by assembly, which can be assembled according to actual requirements. The condenser plate is also easy to install and can be adjusted according to actual conditions, improving applicability and ensuring water intake efficiency in different environments.
[0021] 3. The condenser plate adopts a biomimetic air water intake structure, which does not require an additional heat source or heating device for condensation conditions, nor does it require electricity to power the condensation process. It consists of biomimetic coating patches composed of hydrophilic and hydrophobic coatings, and the biomimetic coating patches are evenly spaced to form a water intake surface, which improves the water intake efficiency in arid areas.
[0022] 4. The fan assembly can accelerate the air circulation speed, allowing air to rush into the outer cylinder and pass through several condensation components in sequence to extract water from the air, ensuring sufficient water extraction and improving water extraction efficiency.
[0023] 5. The control components can be powered by batteries, eliminating the need for an external power supply. This allows the device to be installed in remote or harsh environments. Furthermore, the controller, humidity sensor, and temperature sensor can automatically control the operation of the fan assembly, enhancing its self-control. Attached Figure Description
[0024] Figure 1 This is a schematic diagram showing the disassembly of the internal components of this utility model;
[0025] Figure 2 This is a schematic diagram of the top cover of this utility model;
[0026] Figure 3 This is a schematic diagram of the top structure of the fan assembly of this utility model;
[0027] Figure 4 This is a schematic diagram of the bottom structure of the fan assembly of this utility model;
[0028] Figure 5 This is a schematic diagram of the top structure of the condenser assembly of this utility model;
[0029] Figure 6 This is a schematic diagram of the bottom structure of the condenser assembly of this utility model;
[0030] Figure 7 This is a schematic diagram of the plate mounting bracket of the condenser assembly of this utility model;
[0031] Figure 8 This is a schematic diagram of the structure of the condenser plate of the condenser assembly of this utility model;
[0032] Figure 9 This is an enlarged schematic diagram of the biomimetic water intake structure of the condenser plate of this utility model;
[0033] Figure 10 This is a schematic diagram of the structure of the collection component of this utility model;
[0034] In the diagram: 1. Top cover; 11. First limiting block; 12. Mounting boss; 13. Cover; 14. Flat plate;
[0035] 2. Fan assembly; 21. Motor; 22. Fan; 23. Fan bracket;
[0036] 3. Control components; 31. Humidity sensor; 32. Temperature sensor;
[0037] 4. Condensation assembly; 41. Condensation plate; 411. Second limiting block; 412. Hydrophobic coating; 413. Hydrophilic coating; 42. Plate mounting bracket; 421. Connecting post; 422. Connecting block; 4211. Threaded hole; 4212. Threaded post; 423. Opening slot;
[0038] 5. Outer cylinder; 51. Air inlet slot; 52. Air outlet slot;
[0039] 6. Collection component; 61. Threaded metal rod; 62. Water collection boss; 63. Water collection tank; 64. Water outlet pipe; 65. Support foot. Detailed Implementation
[0040] The embodiments will be further described below with reference to the accompanying drawings.
[0041] like Figures 1-10 As shown in the preferred embodiment 1, a non-powered water vapor condensation and collection device for arid areas includes a collection component 6. The top of the collection component 6 is detachably provided with an outer cylinder 5. The top of the side wall of the outer cylinder 5 is provided with several air inlet slots 51, and the bottom of the side wall of the outer cylinder 5 is provided with several air outlet slots 52. Several condensation components 4 are assembled along the axial direction inside the outer cylinder 5. Several condensation plates 41 are detachably provided on each condensation component 4. The top of the outer cylinder 5 is detachably provided with a top cover 1. A fan component 2 is provided at the bottom center of the top cover 1. The airflow direction of the fan component 2 is from the top of the outer cylinder 5 to the collection component 6.
[0042] The device forms a chamber structure with a collection component 6, an outer cylinder 5 and a top cover 1. The fan component 2 introduces air from the air inlet slot 51 and blows it toward the condenser component 4. During the flow, the moisture in the air is sequentially absorbed by each condenser plate 41, and finally completes the water extraction. The air after water extraction is discharged through the air outlet slot 52, and the extracted water is collected and blown down along the condenser plate 41 to the collection component 6 for collection. The condenser component 4 can be assembled sequentially, and the condenser plate 41 can also be disassembled and installed.
[0043] As a preferred embodiment 2, the collecting component 6 includes a water collecting boss 62 located in the middle of the chassis, an outer cylinder 5 sleeved on the outside of the water collecting boss 62 and supported on the chassis, a downwardly recessed water collecting trough 63 is provided in the middle of the water collecting boss 62, the water collecting trough 63 is connected to the water storage device through a water outlet pipe 64, a threaded metal rod 61 is provided in the middle of the water collecting trough 63, and no less than three support feet 65 are arranged at equal intervals around the bottom of the chassis.
[0044] The support feet 65 can be inserted into the ground to stably fix the device on the ground. During installation, simply fitting the outer cylinder 5 onto the water collecting protrusion 62 completes the installation, forming the body of the chamber. The condensed water eventually falls into the water collecting trough 63 of the water collecting protrusion 62. The water collecting trough 63 has an inverted frustum structure, and the water eventually collects at the bottom of the water collecting trough 63 and finally enters the water storage device through the water outlet pipe 64. The threaded metal rod 61 is used for threaded installation of the condenser components 4, ensuring the stable installation of each condenser component 4.
[0045] In a preferred embodiment 3, each condensing assembly 4 includes a hollow cylindrical plate mounting bracket 42 and several condensing plates 41 evenly spaced around an axis. The condensing plates 41 are arranged vertically in the radial direction. The top of the plate mounting bracket 42 has several opening slots 423 corresponding to the condensing plates 41. Connecting columns 421 are concentrically and coaxially arranged inside the plate mounting bracket 42. The outer wall of the connecting column 421 is fixedly connected to the inner wall of the plate mounting bracket 42 via connecting blocks 422. The top of the connecting column 421 has a threaded post 4212, and the bottom of the connecting column 421 has a threaded hole 4211. The threaded post 4212 and the threaded metal rod 61 both form a threaded engagement with the threaded hole 4211. The connecting block 422 is used to fix the connecting column 421, maintaining the hollowness of the plate mounting bracket 42 while allowing for axial installation. The bottommost condensing assembly 4's plate mounting bracket 42 is threaded onto the threaded metal rod 61, and the condensing assemblies 4 are sequentially threaded onto it, thus ensuring the stable installation of the entire condensing structure within the silo structure.
[0046] A T-shaped second limiting block 411 is provided on the top of one side of the condenser plate 41. The vertical part of the second limiting block 411 is parallel to and connected to the condenser plate 41, and the horizontal part of the second limiting block 411 is perpendicular to the condenser plate 41. The vertical part of the second limiting block 411 is embedded in the corresponding opening slot 423, and the horizontal part of the second limiting block 411 forms a limiting fit with the inner wall of the plate mounting bracket 42. The side of the condenser plate 41 near the plate mounting bracket 42 forms a limiting fit with the outer wall of the plate mounting bracket 42. This facilitates the insertion and installation of the condenser plate 41. The T-shaped second limiting block 411 forms a snap-fit structure. When the vertical part of the second limiting block 411 is embedded in the corresponding opening slot 423, the plate mounting bracket 42 is snapped between the condenser plate 41 and the horizontal part of the second limiting block 411 to form a limiting fit, ensuring the limiting and fixing of the condenser plate 41.
[0047] As a preferred embodiment 4, the surface of the condenser plate 41 is provided with biomimetic coating patches that are uniformly arranged and spaced apart.
[0048] Preferably, the condenser plate 41 is a right-angled trapezoidal thin plate made of aluminum metal with a thickness of 1-2mm. A second limiting block 411 is arranged on the bottom edge of the right-angled trapezoid, the hypotenuse is located at the bottom, and the top edge is away from the plate mounting bracket 42.
[0049] The biomimetic coating patch includes a regular hexagonal hydrophobic coating 412, with a circular hydrophilic coating 413 superimposed on the middle of the hydrophobic coating 412, and the hydrophilic coating 413 is contained within the area of the hydrophobic coating 412. The biomimetic coating patch is arranged in a honeycomb structure, and there are gaps between adjacent biomimetic coating patches.
[0050] Mimicking the shell structure of a Namibian desert beetle, specifically, the hydrophobic coating 412 has a regular hexagonal structure, with a circular hydrophilic coating 413, whose diameter is smaller than the circumcircle of the regular hexagon, superimposed on its center. The combination of the two forms a single coating patch, with a spacing of about 1 mm between each patch to guide the condensate formed after condensation. The coating patches are arranged in a honeycomb pattern on the surface of the condensing plate. Furthermore, the number of layers of the condensing component 4 and the number and arrangement of the condensing plates 41 can be freely adjusted according to actual needs to further increase the condensation efficiency of the device.
[0051] When water vapor with high humidity passes through the condenser plate 41, due to the temperature difference, the water vapor will be adsorbed by the circular hydrophilic coating 413 on the surface of the condenser plate 41. As the amount of adsorption gradually increases, the surface tension of the water droplets is insufficient to maintain the shape of the water droplets. The water droplets come into contact with the surrounding hydrophobic coating 412 and slide into the gaps between the patches. They slide down the gaps step by step, slide to the inclined side of the condenser plate 41, and then flow onto the metal cylindrical surface of the plate mounting frame 42. Finally, they are collected by the collection component 6 at the bottom of the device.
[0052] As a preferred embodiment 5, the air inlet slots 51 are evenly distributed around the central axis of the outer cylinder 5, all air inlet slots 51 are arranged radially, and the top of each air inlet slot 51 is open.
[0053] The air outlet slots 52 are evenly distributed around the central axis of the outer cylinder 5, and all air outlet slots 52 are arranged radially. This ensures the direction of air intake and exhaust. When the fan assembly 2 is not activated, both the air intake slots 51 and the air outlet slots 52 can be used for air intake, increasing the amount of air entering.
[0054] As a preferred embodiment 6, the condensation assembly 4 can be arranged for tiered adsorption water collection, with the condensation plates 41 on the condensation assembly 4 increasing sequentially along the air inlet direction to form tiered adsorption and improve adsorption efficiency.
[0055] As a preferred embodiment 7, the top cover 1 is a conical hollow shell formed by assembling the cover body 13 and the flat plate 14. The bottom center of the flat plate 14 is provided with a mounting boss 12. The mounting boss 12 is embedded in the top opening of the outer cylinder 5 to form a snap-fit. A number of first limiting blocks 11 are provided at equal intervals around the outer side of the mounting boss 12. The first limiting blocks 11 are embedded in the corresponding air inlet groove 51 along the opening of the air inlet groove 51 to form a limiting fit.
[0056] The conical shell formed by assembling the cover 13 and the flat plate 14 is easy to install and disassemble, and also facilitates the installation of the control component 3 and the motor 21 inside. The mounting boss 12 facilitates the installation of the top cover 1. The top of the silo structure is sealed by the docking of the mounting boss 12 with the top opening of the outer cylinder 13. The first limiting block 11 is just embedded in the top of the air inlet slot 51, without blocking the air inlet slot 51, and at the same time limiting the top cover 13 to prevent the fan component 2 from driving the top cover 13 to rotate, ensuring the stability of the device operation and preventing wind and sand from entering.
[0057] Preferably, a snap-fit block can be provided on the edge of the flat plate 14, and a corresponding snap-fit groove can be provided on the edge of the cover 13 to form a snap-fit installation. Existing snap-fits and snap-fit installation methods can be used to ensure a closed seal.
[0058] In a preferred embodiment 8, the fan assembly 2 includes a motor 21 disposed inside the top cover 1. The output shaft of the motor 21 passes through the mounting boss 12 and is coaxially linked with one end of the rotating shaft of the fan 22. A fan bracket 23 is provided below the fan 22. A threaded hole 4211 is provided at the bottom middle position of the fan bracket 23, which forms a threaded engagement with the threaded post 4212 of the topmost condenser assembly 4. The other end of the rotating shaft of the fan 22 forms a rotational engagement with the top middle position of the fan bracket 23 through a bearing.
[0059] The top of the fan 22 is limited by the motor 21, and the bottom of the fan 22 is limited by the fan bracket 23 to ensure the stability of the fan 22 rotation. The motor 21 provides driving force to rotate the fan 22.
[0060] As a preferred embodiment 9, the top cover 1 is provided with a control component 3, which includes a battery, a controller, a temperature sensor 31 and a humidity sensor 32. The motor 21, the battery, the temperature sensor 31 and the humidity sensor 32 are all electrically connected to the controller. The sensing ends of the temperature sensor 31 and the humidity sensor 32 are both located through the mounting boss 12 at the top opening of the outer cylinder 5.
[0061] The motor 21, battery, temperature sensor 31, humidity sensor 32, and controller are all existing devices, among which:
[0062] The battery is a removable rechargeable battery and its matching power supply structure, which makes it easy to replace the battery and power the entire device without the need for external wires or power supply, making it easy to install in places without power.
[0063] Temperature sensors 31 include at least two sensors, which monitor the temperature of the condenser plate 41 and the air temperature, respectively.
[0064] The control process is as follows:
[0065] When either the ambient air temperature or the condenser plate 41 temperature is below 0°C, the device will shut down the motor 21 and stop the fan 22 via the controller.
[0066] When both the ambient air temperature and the temperature of the condenser plate 41 are above 0℃, the air humidity is above 30%, and the temperature of the condenser plate 41 is below the air temperature, and the conditions for water vapor condensation are met according to the controller's set formula, the motor 21 is started and the fan 22 rotates. During operation, as the air temperature, humidity, and condenser plate temperature change, the device stops when the sensor detects that the condensation conditions are not met.
[0067] As a preferred embodiment 10, the outer surface of the outer cylinder 5 is coated with a coating with high infrared emissivity and low solar absorptivity. The high infrared emissivity helps the device reduce the temperature of the entire device through thermal radiation at night or in the early morning, creating a temperature difference condition that is conducive to water vapor condensation. The coating with low solar absorptivity helps delay the device from heating up due to solar radiation in the early morning, further extending the operating window of the device.
[0068] Furthermore, the outer cylinder 5 protects the core components inside, effectively preventing wind, sand, and dust from eroding the internal condensation core components, greatly improving the stability of the device, extending its lifespan, and reducing later maintenance costs.
[0069] The working principle of this utility model:
[0070] The device forms a chamber structure with a collection component 6, an outer cylinder 5, and a top cover 1. The fan component 2 introduces air from the air inlet slot 51 and blows it toward the condenser component 4. During the flow, the moisture in the air is sequentially absorbed by each condenser plate 41, and finally completes the water extraction. The air after water extraction is discharged through the air outlet slot 52, and the extracted water is collected and blown down along the condenser plate 41 to the collection component 6 for collection. The condenser component 4 can be assembled sequentially, and the condenser plate 41 can also be disassembled and installed. Under the condition of being able to extract water from the air, the efficiency and sufficiency of air water extraction are guaranteed.
Claims
1. A non-powered water vapor condensation and collection device for arid regions, characterized in that, The system includes a collection component (6), the top of which is detachably provided with an outer cylinder (5). The top of the side wall of the outer cylinder (5) is provided with several air inlet slots (51), and the bottom of the side wall of the outer cylinder (5) is provided with several air outlet slots (52). The outer cylinder (5) is provided with several condensing components (4) assembled along the axial direction. Each condensing component (4) is provided with several condensing plates (41) detachably. The top of the outer cylinder (5) is provided with a top cover (1), and the bottom middle position of the top cover (1) is provided with a fan assembly (2). The airflow of the fan assembly (2) points from the top of the outer cylinder (5) to the collection component (6).
2. The non-powered water vapor condensation and collection device for arid regions according to claim 1, characterized in that, The collecting component (6) includes a water collecting boss (62) located in the middle of the chassis. The outer cylinder (5) is sleeved on the outside of the water collecting boss (62) and supported on the chassis. A downwardly recessed water collecting trough (63) is provided in the middle of the water collecting boss (62). The water collecting trough (63) is connected to the water storage device through a water outlet pipe (64). A threaded metal rod (61) is provided in the middle of the water collecting trough (63). At least three support feet (65) are arranged at equal intervals around the bottom of the chassis.
3. The non-powered water vapor condensation and collection device for arid regions according to claim 2, characterized in that, Each of the condensing components (4) includes a hollow cylindrical plate mounting frame (42) and several condensing plates (41) evenly distributed around an axis. The condensing plates (41) are all arranged vertically in the radial direction. The top of the plate mounting frame (42) is provided with several opening slots (423) that correspond one-to-one with the condensing plates (41). The plate mounting frame (42) is provided with connecting columns (421) concentrically and coaxially. The outer wall of the connecting column (421) is fixedly connected to the inner wall of the plate mounting frame (42) through connecting blocks (422). The top of the connecting column (421) is provided with a threaded column (4212), and the bottom of the connecting column (421) is provided with a threaded hole (4211). The threaded column (4212) and the threaded metal rod (61) are both threadedly engaged with the threaded hole (4211).
4. The non-powered water vapor condensation and collection device for arid regions according to claim 3, characterized in that, The top of one side of the condenser plate (41) is provided with a T-shaped second limiting block (411). The vertical part of the second limiting block (411) is parallel to and connected to the condenser plate (41). The horizontal part of the second limiting block (411) is perpendicular to the condenser plate (41). The vertical part of the second limiting block (411) is embedded in the corresponding opening groove (423). The horizontal part of the second limiting block (411) forms a limiting fit with the inner wall of the plate mounting bracket (42). The side of the condenser plate (41) near the plate mounting bracket (42) forms a limiting fit with the outer wall of the plate mounting bracket (42).
5. A non-powered water vapor condensation and collection device for arid regions according to claim 4, characterized in that, The surface of the condenser plate (41) is provided with biomimetic coating patches that are evenly arranged and spaced apart.
6. The non-powered water vapor condensation and collection device for arid regions according to claim 5, characterized in that, The biomimetic coating patch includes a regular hexagonal hydrophobic coating (412), and a circular hydrophilic coating (413) is sprayed in the middle of the hydrophobic coating (412). The hydrophilic coating (413) is contained within the range of the hydrophobic coating (412). The biomimetic coating patch is arranged in a honeycomb structure, and there are gaps between adjacent biomimetic coating patches.
7. A non-powered water vapor condensation and collection device for arid regions according to claim 6, characterized in that, The air inlet slots (51) are evenly distributed around the central axis of the outer cylinder (5), and all air inlet slots (51) are arranged radially, and the top of each air inlet slot (51) is open. The air outlet slots (52) are evenly distributed around the central axis of the outer cylinder (5), and all air outlet slots (52) are arranged radially.
8. A non-powered water vapor condensation and collection device for arid regions according to claim 7, characterized in that, The top cover (1) is a conical shell assembled from the cover (13) and the plate (14). The bottom center of the plate (14) is provided with a mounting boss (12). The mounting boss (12) is embedded in the top opening of the outer cylinder (5) to form a snap-fit. Several first limiting blocks (11) are provided at equal intervals around the outside of the mounting boss (12). The first limiting blocks (11) are embedded in the corresponding air inlet groove (51) along the opening of the air inlet groove (51) to form a limiting fit.
9. A non-powered water vapor condensation and collection device for arid regions according to claim 8, characterized in that, The fan assembly (2) includes a motor (21) located inside the top cover (1). The output shaft of the motor (21) passes through the mounting boss (12) and is coaxially linked with one end of the rotating shaft of the fan (22). A fan bracket (23) is provided below the fan (22). A threaded hole (4211) is provided at the bottom middle position of the fan bracket (23) and forms a threaded engagement with the threaded post (4212) of the topmost condenser assembly (4). The other end of the rotating shaft of the fan (22) forms a rotational engagement with the top middle position of the fan bracket (23) through a bearing.
10. A non-powered water vapor condensation and collection device for arid regions according to claim 9, characterized in that, The top cover (1) is equipped with a control component (3), which includes a battery, a controller, a temperature sensor (31) and a humidity sensor (32). The motor (21), battery, temperature sensor (31) and humidity sensor (32) are all electrically connected to the controller. The sensing ends of the temperature sensor (31) and humidity sensor (32) are all located at the top opening of the outer cylinder (5) through the mounting boss (12).