Photovoltaic panel surface bionic energy-saving water collecting and root directional irrigation device

Abstract

The application provides a photovoltaic panel surface bionic energy-saving water collecting and root directional irrigation device, and belongs to the technical field of photovoltaic panel surface water collecting and irrigation. The device comprises a U-shaped water collecting groove with a water outlet arranged at the bottom, a water guide pattern arranged on the inner wall of the water collecting groove for collecting water droplets and guiding the water droplets to the water outlet, a porous ceramic root irrigation device for being buried in the depth of main root systems of plants to provide water for the plants, and a capillary conveying pipe comprising a hose and a capillary fiber wire penetrating through the hose, one end of the hose being connected with the water outlet of the water collecting groove, one end of the capillary fiber wire being inserted into the water outlet of the water collecting groove, the other end of the hose being connected with the microporous structure of the porous ceramic root irrigation device, and the other end of the capillary fiber wire being inserted into the microporous structure. The device has high water collecting efficiency, small loss in the conveying process and can accurately supply water.

Description

Technical Field

[0001] This invention belongs to the field of photovoltaic panel water collection and irrigation technology, specifically relating to a photovoltaic panel biomimetic energy-saving water collection and root-oriented irrigation device. Background Technology

[0002] Solar panels in desert regions have the following characteristics: Desert nights are very cold, and the surface temperature of the solar panels can drop below the air temperature. At this time, moisture in the air condenses on the panels as dew, much like dewdrops on grass in the morning. Every morning, each solar panel can generate tens to hundreds of milliliters of clean, fresh water. However, after sunrise, this water either evaporates directly from the panel surface or drips onto the sand, where it is absorbed and evaporated within minutes. This water, which could have been used to irrigate plants, is completely wasted. For desert plants, drip irrigation technology is typically used for watering.

[0003] CN120613975A discloses a photovoltaic panel water collection device, which has a plastic or metal "water receiving trough" installed on the lower edge of the photovoltaic panel. Water on the panel surface flows into the trough and is then led to the ground through a pipe. CN110050560A discloses a drip irrigation system, which draws water from a water source (possibly several kilometers away) to the photovoltaic area through a main pipe, then splits into branch pipes, and finally waters each plant through drip irrigation heads.

[0004] The existing water collection and drip irrigation devices have the following defects: (1) The surface of the water collection trough is smooth. When small water droplets (the diameter may only be 0.5 mm) flow along the plate to the edge of the trough, due to the surface tension of the water, many small water droplets will "hang" on the edge of the trough and cannot come down, resulting in low water collection efficiency; (2) Even if the water is collected in the trough, it has to be delivered to the plants through pipes. In the middle, it has to pass through several meters or even more than ten meters of pipes. In the high temperature environment of the desert, the pipe wall will be scorched by the sun. When the water flows through, some of it will evaporate into water vapor. Moreover, the pipe is exposed to the air. In summer, the pipe wall temperature can reach 60-70℃, and the water loss rate may exceed 30%, resulting in large losses during the transportation process; (3) The existing solution is to lead the water to the ground. After the water reaches the ground, it has to diffuse laterally through the sand to reach the roots of the plants. The capillary effect of the sand is very weak. The water often forms a wet ball near the drip point, but the roots of the plants may not be in that position, resulting in inaccurate water supply; (4) The cost is high, the installation is complicated, and the maintenance is difficult. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a biomimetic energy-saving water collection and root-directed irrigation device for photovoltaic panels. This device can efficiently collect the water condensed on the photovoltaic panels and deliver it directly to the roots of plants without evaporation, long-distance transportation, or waste. Moreover, the device is simple, inexpensive, easy to install and maintain, and is suitable for large-scale use in photovoltaic power stations covering thousands or even tens of thousands of acres.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: This invention provides a photovoltaic panel biomimetic energy-saving water collection and root-guided irrigation device, comprising: A U-shaped water collection trough is used to connect to the lower frame of the photovoltaic panel. A water outlet is provided at the bottom of the water collection trough, and a water guiding pattern is provided on the inner wall of the water collection trough to collect water droplets and guide them to the water outlet. A porous ceramic root irrigation device is used to provide water to plants by being buried at the depth of the main root system. The porous ceramic root irrigation device has a microporous structure that is connected to the outside. The capillary delivery tube includes a flexible tube and a capillary fiber thread running through the flexible tube. One end of the flexible tube is connected to the outlet of the water collection tank, and one end of the capillary fiber thread is inserted into the outlet of the water collection tank. The other end of the flexible tube is connected to the microporous structure of the porous ceramic root irrigation device, and the other end of the capillary fiber thread is inserted into the microporous structure. Under capillary action, the capillary fiber thread draws water from the outlet into the microporous structure of the porous ceramic root irrigation device.

[0007] Optionally, the water-guiding pattern includes: Multiple collection grooves extending from the edge of the water collection tank to the bottom; A flow guide groove is located at the bottom of the water collection tank, and the flow guide groove is connected to the water outlet and a plurality of the collection grooves respectively; The surface of the collecting groove is a rough surface, while the other areas in the water collection tank, excluding the collecting groove, are smooth surfaces.

[0008] Optionally, the roughness Ra of the rough surface is greater than 3.2 μm, and the roughness Ra of the smooth surface is less than 0.8 μm.

[0009] Optionally, the capillary thread is a natural fiber thread or a synthetic fiber thread.

[0010] Optionally, the diameter of the capillary filament is 0.5-2 mm.

[0011] Optionally, pagoda heads are provided at both ends of the capillary delivery tube, the pagoda heads are connected to the flexible tube, a positioning core is provided in the pagoda head, the positioning core is fixedly connected to the inside of the pagoda head, the end of the capillary fiber is wound and fixed on the positioning core, and the capillary fiber is straightened and centered in the flexible tube.

[0012] Optionally, the porous ceramic root irrigation device is mushroom-shaped, including an umbrella-shaped part and a stem-shaped part. The interior of the umbrella-shaped part has an interconnected microporous structure. The lower surface of the umbrella-shaped part is provided with multiple water outlets, which are connected to the microporous structure. One end of the stem-shaped part is connected to the lower surface of the umbrella-shaped part, and the interior of the stem-shaped part is provided with a hollow structure, which is connected to the microporous structure.

[0013] Optionally, the upper surface of the umbrella portion is provided with a water inlet communicating with the microporous structure, the water inlet is connected to the hose, and the end of the capillary fiber is inserted into the microporous structure through the water inlet.

[0014] Optionally, the pore size of the microporous structure inside the umbrella part is 10-50 micrometers, and the porosity is 30-50%.

[0015] Optionally, the diameter of the umbrella part is 2-5 cm, and the length of the handle part is 4-8 cm.

[0016] The above-described solution of the present invention has at least the following beneficial effects: In the above-described embodiment of the present invention, the inner wall of the water collection tank is provided with water-guiding patterns, and the interior of the porous ceramic root irrigation device is provided with a microporous structure communicating with the outside. The capillary delivery tube includes a flexible tube and a capillary fiber thread inserted through the flexible tube. One end of the capillary delivery tube is connected to the outlet of the water collection tank, and one end of the capillary fiber thread is inserted into the outlet of the water collection tank. The other end of the capillary delivery tube is connected to the microporous structure of the porous ceramic root irrigation device, and the other end of the capillary fiber thread is inserted into the microporous structure. Under capillary action, the capillary fiber thread draws water from the outlet into the microporous structure of the porous ceramic root irrigation device. The porous ceramic root irrigation device is buried deep within the main root system of the plant. When small water droplets flow from the photovoltaic panel into the water collection tank, they are guided by water-guiding patterns to the outlet, resulting in high water collection efficiency. The water is absorbed by the capillary fibers and flows forward along them. Because the water flows through the gaps in the capillary fibers, it is not easily evaporated, resulting in minimal loss during transport. After the capillary fibers deliver the water to the porous ceramic root irrigation device, the water enters the microporous structure of the ceramic. The dry soil absorbs water from the microporous structure, but the capillary force of the ceramic is stronger than that of sand, so the water is not absorbed all at once, but is slowly and continuously released into the surrounding soil. This creates a stable moist ball at the plant roots, ensuring that the plant can drink water at any time, achieving precise water supply. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the biomimetic energy-saving water collection and root-guided irrigation device for the vegetated plate surface of the present invention. Figure 2 This is a schematic diagram of the water collection tank of the present invention; Figure 3This is a schematic diagram of the connection structure between the water collection tank and the photovoltaic panel of the present invention; Figure 4 This is a schematic diagram of the capillary delivery tube of the present invention; Figure 5 This is a schematic cross-sectional view of the pagoda-shaped heads at both ends of the capillary delivery tube of the present invention. Figure 6 This is a schematic diagram of the porous ceramic root irrigation device of the present invention.

[0018] Explanation of reference numerals in the attached figures: 1-Water collection trough; 11-Water outlet; 12-Collection groove; 13-Flow guiding groove; 2-Capillary delivery tube; 21-Hose; 22-Capillary fiber thread; 23-Pagoda head; 24-Positioning core; 3-Porous ceramic root irrigation device; 31-Umbrella part; 32-Handle part; 33-Water inlet; 34-Water outlet; 35-Hollow structure; 4-Photovoltaic panel; 5-Snap fastener. Detailed Implementation

[0019] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0020] like Figures 1 to 6 As shown, an embodiment of the present invention proposes a photovoltaic panel biomimetic energy-saving water collection and root-oriented irrigation device, comprising: A U-shaped water collection trough 1 is used to connect to the lower frame of the photovoltaic panel 4. A water outlet 11 is provided at the bottom of the water collection trough 1. The inner wall of the water collection trough 1 is provided with water guiding patterns to collect water droplets and guide them to the water outlet 11. A porous ceramic root irrigation device 3 is used to be buried at the depth of the main root system of a plant to provide water to the plant. The porous ceramic root irrigation device 3 has a microporous structure that is connected to the outside. The capillary delivery tube 2 includes a flexible tube 21 and a capillary fiber 22 that runs through the flexible tube 21. One end of the flexible tube 21 is connected to the outlet 11 of the water collection tank 1, and one end of the capillary fiber 22 is inserted into the outlet 11 of the water collection tank 1. The other end of the flexible tube 21 is connected to the microporous structure of the porous ceramic root irrigation device 3, and the other end of the capillary fiber 22 is inserted into the microporous structure. Under capillary action, the capillary fiber 22 draws water from the outlet 11 into the microporous structure of the porous ceramic root irrigation device 3.

[0021] For example, the water-guiding pattern includes: Multiple collection grooves 12 extending from the edge of the water collection tank 1 to the bottom; A flow guiding groove 13 is located at the bottom of the water collection tank 1. The flow guiding groove 13 is connected to the water outlet 11 and a plurality of the collection grooves 12 respectively. Condensate from the surface of the photovoltaic panel 4 is guided through the flow guiding groove 13 to the collection grooves 12 and then enters the water outlet 11. The surface of the collecting groove 12 is a rough surface, while the other areas of the water collection tank 1, excluding the collecting groove 12, are smooth surfaces. The rough surface of the collecting groove 12 is a hydrophilic area, while the smooth surfaces of the other areas are hydrophobic areas. Most of the bottom area of ​​the tank is a smooth surface (it is smooth after injection molding). Water in these areas forms droplets like on a lotus leaf, making it easy to roll. The rough surface of the collecting groove 12 (formed by lightly sanding with sandpaper or by directly creating a rough surface on the mold) causes water to spread out when it encounters the rough surface, flowing along the collecting groove 12 and collecting the water into the guiding groove 13. The water moves easily on the smooth surface of the guiding groove 13 and then flows to the outlet 11, resulting in high water collection efficiency.

[0022] For example, the water collection tank 1 is made of ABS engineering plastic, which is low in cost, sun resistant, and not easy to age, and can be injection molded.

[0023] For example, the width of the collecting groove 12 is 0.3-1.0 mm and the depth is 0.2-0.5 mm.

[0024] For example, the roughness Ra of the rough surface is greater than 3.2 μm, and the roughness Ra of the smooth surface is less than 0.8 μm.

[0025] For example, the length of the water collection trough 1 is the same as the lower frame of the photovoltaic panel 4. The two sides of the water collection trough 1 are outwardly rolled edges. The lower frame of the photovoltaic panel 4 is provided with a buckle 5, and the outwardly rolled edges of the water collection trough 1 are fastened to the buckle 5. During installation, the water collection trough 1 is directly fastened to the buckle 5 on the lower frame of the photovoltaic panel 4 without screws or glue, making installation convenient.

[0026] For example, such as Figure 3 As shown, the water outlet 11 is located at one end of the water collection tank 1. The water collection tank 1 is inclined with an inclination angle of 1 to 5 degrees, which is conducive to the flow of water in the guide groove 13 to the water outlet 11.

[0027] When small water droplets flow from the surface of the photovoltaic panel 4 into the water collection tank 1, the droplets roll around on the smooth surface. Once they roll to the vicinity of the collection groove 12, they are "captured" by the rough surface of the collection groove 12. Then, they flow along the guide groove 13, and the water flows from the guide groove 13 to the outlet 11, solving the problem of small water droplets "hanging on the wall" and not coming down.

[0028] In this invention, the porous ceramic root irrigation device 3 is buried at the depth of the plant's main root system (usually 5-15 cm deep). The interior of the porous ceramic root irrigation device 3 has a microporous structure, and the microporous structure is connected to the outside. When the capillary fiber 22 delivers water to the microporous structure, the water enters the microporous structure. Dry soil will "absorb" water from the microporous structure, but the capillary force of ceramics is different from that of sand. When the sand is relatively dry, the capillary force of the sand is greater than that of ceramics, and the water in the microporous structure will enter the sand. However, the water in the microporous structure will not be absorbed all at once. As the moisture of the sand increases, the capillary force of the sand decreases, and the sand reduces its absorption of water from the microporous structure, thereby achieving a slow and continuous release of water to the surrounding soil. In this way, a stable moist ball is formed at the plant roots, so that the plant can drink water at any time, providing precise water supply.

[0029] For example, the porous ceramic root irrigation device 3 is mushroom-shaped, including an umbrella-shaped part 31 and a stem 32. The interior of the umbrella-shaped part 31 has an interconnected microporous structure. Multiple water outlets 34 are provided on the lower surface of the umbrella-shaped part 31, and these outlets communicate with the microporous structure. One end of the stem 32 is connected to the lower surface of the umbrella-shaped part 31, and a hollow structure 35 is provided inside the stem 32, which communicates with the microporous structure. When the porous ceramic root irrigation device 3 is buried in the soil, the umbrella-shaped part 31 faces upwards and the stem 32 faces downwards. The interior of the umbrella-shaped part 31 has a microporous structure, and the lower surface of the umbrella-shaped part 31 has water outlets 34 communicating with the microporous structure. The interior of the stem 32 has a hollow structure 35 communicating with the microporous structure. When the capillary fibers 22 deliver water to the umbrella-shaped part 31, the water enters the microporous structure, and the dry soil "absorbs" water through the water outlets 34 and the hollow structure 35.

[0030] For example, the upper surface of the umbrella part 31 is provided with a water inlet 33 that communicates with the microporous structure. The water inlet 33 is connected to the hose 21, and the end of the capillary fiber 22 is inserted into the microporous structure through the water inlet 33.

[0031] For example, the porous ceramic root irrigation device 3 is made by firing red clay at a temperature of 800-900℃, which results in very low cost.

[0032] For example, such as Figure 6 As shown, the microporous structure inside the umbrella portion 31 has a pore size of 10-50 micrometers and a porosity of 30-50%. The umbrella portion 31 contains a large number of interconnected microporous structures, which can generate strong capillary forces. It should be noted that... Figure 6 The microporous structure of the middle umbrella part 31 is an internal structure, and the upper surface of the umbrella part 31 is a smooth planar structure.

[0033] For example, the aperture of the water outlet 34 on the lower surface of the umbrella portion 31 is 0.1-0.3 mm. This aperture of the water outlet 34 can prevent water evaporation while achieving slow water release.

[0034] For example, the hollow structure 35 inside the handle 32 has a diameter of 5-6 mm. This hollow structure 35 can prevent water evaporation while helping to promote plant root growth.

[0035] For example, the diameter of the umbrella portion 31 is 2-5 cm, and the length of the handle portion 32 is 4-8 cm. This size of umbrella portion 31 and handle portion 32 enables water to be supplied to a wide area of ​​the soil, allowing surrounding plants to absorb water.

[0036] In this invention, the capillary fiber 22 in the capillary delivery tube 2 has a strong capillary effect, which can "draw" water from one end to the other. One end of the capillary fiber 22 is inserted into the outlet 11 of the water collection tank 1, and the other end is inserted into the umbrella part 31 of the porous ceramic root irrigation device 3. In this way, after the water flows out of the water collection tank 1, it is immediately "drawn" by the capillary fiber 22, and flows forward along the capillary fiber 22 into the umbrella part 31.

[0037] For example, the capillary fiber 22 does not come into contact with the hose 21, so that the water will not be scalded and evaporated, and the loss during the delivery process is small.

[0038] In order to prevent the capillary fiber 22 from contacting the hose 21, the hose 21 can be set to be straight, that is, the hose 21 always extends in a straight line.

[0039] When the hose 21 needs to change direction during its extension, an annular turning element can be installed inside the turning point of the hose 21. The outer periphery of the annular turning element is connected to the inner wall of the hose 21. The capillary fiber 22 passes through the central hole of the annular turning element. The annular turning element supports and fixes the capillary fiber 22 at the turning point of the hose 21, so that the capillary fiber 22 does not come into contact with the hose 21.

[0040] For example, the capillary thread 22 is a natural fiber thread or a synthetic fiber thread.

[0041] For example, the capillary fiber 22 is cotton thread. Cotton thread is low in cost, and the capillary force of ordinary cotton thread is sufficient to transport water for more than 30 centimeters, while the photovoltaic panel 4 is generally only 1-2 meters above the ground.

[0042] For example, the cotton thread is composed of multiple strands of cotton thread, so that even if some strands of cotton thread are damaged, the water can still flow along the good strands, and the system will not completely fail.

[0043] For example, the diameter of the capillary filament 22 is 0.5-2 mm.

[0044] For example, the hose 21 is a black polyethylene hose with a diameter of 6 mm. Both the hose 21 and the cotton thread are low in cost.

[0045] For example, such as Figure 4 and Figure 5 As shown, pagoda heads 23 are respectively provided at both ends of the capillary delivery tube 2. The pagoda heads 23 are connected to the flexible tube 21. A positioning core 24 is provided in the pagoda head 23. The positioning core 24 is fixedly connected to the inside of the pagoda head 23. The end of the capillary fiber 22 is wound and fixed on the positioning core 24. The capillary fiber 22 is straightened and centered in the flexible tube 21. Because the water flows through the fiber gaps of the capillary fiber 22, it will not come into contact with the tube wall of the flexible tube 21 and will not be scalded and evaporated. Furthermore, the pagoda heads 23 at both ends of the capillary delivery tube 2 can be inserted into the outlet 11 of the water collection tank 1 and the inlet 33 of the umbrella part 31, respectively. They fit tightly once inserted, requiring no fasteners and making operation convenient.

[0046] For example, the inner diameter of the outlet 11 is 5.8 mm, and the maximum diameter of the pagoda head 23 is 6.2 mm.

[0047] The working process of the photovoltaic panel biomimetic energy-saving water collection and root-guided irrigation device of the present invention is as follows: Nighttime: Desert temperatures drop, and the surface temperature of photovoltaic panel 4 is below the dew point temperature of the air, causing water vapor to condense into small water droplets on the panel surface; In the early morning: small water droplets merge into large water droplets on the board surface, flow down the board surface to the lower edge, and drip into the water collection tank 1; Water collection: After water droplets fall into the water collection tank 1, they are all guided by the groove 12 to the water outlet 11; Delivery: Water enters the capillary delivery tube 2 from the outlet 11 and is immediately absorbed by the capillary fiber 22. The capillary fiber 22, like a wick, "draws" the water to the porous ceramic root irrigation device 3 at the other end. This process takes place in a completely closed environment with no evaporation. Water supply: After the water reaches the porous ceramic root irrigation device 3, it is stored in the micropores of the umbrella part 31. The sand around the porous ceramic root irrigation device 3 is dry and begins to "absorb water" through the water outlet 34 and hollow structure 35 of the porous ceramic root irrigation device 3. However, the porous ceramic root irrigation device 3 releases water very slowly, possibly only a few milliliters to a dozen milliliters per day. Plant absorption: The plant's roots will actively extend towards the moist porous ceramic root irrigation device 3, stick to the surface of the porous ceramic root irrigation device 3 to absorb water. Because the water supply speed is slow, the water will not be wasted and will be completely absorbed by the plant. After the sun rises higher: Water no longer condenses on the surface of the photovoltaic panel 4, but there may still be water stored in the porous ceramic root irrigation device 3, which continues to release slowly to support the plants through the daytime drought.

[0048] The porous ceramic root irrigation device 3 of this invention is not a simple water dispenser, but an intelligent moisture regulator: when the soil is dry, the porous ceramic root irrigation device 3 releases water; when it rains or the soil is already moist, the porous ceramic root irrigation device 3 stops releasing water or even absorbs water from the soil to prevent root rot; the micropore structure of the porous ceramic root irrigation device 3 is carefully designed: if it is too small, the water will flow out too slowly, and if it is too large, it will not be able to retain water. This invention uses porous ceramics with a specific pore size range (10-50 micrometers) as a root slow-release irrigator.

[0049] The biomimetic energy-saving water collection and root-oriented irrigation device of the present invention requires no electricity, no water pump, and no controller: water collection relies on gravity, water delivery relies on capillary force, and water supply relies on soil suction, which is a huge advantage in remote desert areas without electricity.

[0050] The photovoltaic panel biomimetic energy-saving water collection and root-oriented irrigation device of the present invention can achieve modular and rapid installation. Each component can be quickly connected: the water collection tank 1 is connected to the photovoltaic panel 4 through the buckle 5, and the two ends of the capillary tube 2 are respectively inserted into the water outlet 11 of the water collection tank 1 and the water inlet 33 of the umbrella part 31 through the pagoda head 23; the porous ceramic root irrigation device 3 is pre-buried in the plant pit and can be inserted.

[0051] Therefore, the photovoltaic panel biomimetic energy-saving water collection and root-oriented irrigation device of the present invention has the following advantages: (1) Significantly improve water collection efficiency: More than 90% of the water condensed on the photovoltaic panel 4 can be collected, preventing water from evaporating or dripping into irrelevant places, and is environmentally friendly and energy-saving.

[0052] (2) Achieve “zero evaporation” transport: From the water collection point to the plant roots, there will be no water loss due to evaporation. As soon as the water leaves the water collection tank 1, it enters a “closed channel” and directly reaches the plant roots.

[0053] (3) Precise water supply: Water is delivered directly to the area where the plant roots are most dense, without spreading and wasting on the ground. Moreover, the water supply speed is matched with the plant's water absorption speed, so it is neither too fast nor too slow.

[0054] (4) Reduce costs and simplify installation: The whole device is like "building blocks". Ordinary workers can install it after simple training. The installation time of one device is controlled within 5 minutes. The materials are cheap and easy to obtain.

[0055] (5) Almost maintenance-free: The device has few moving parts, is not easy to break or clog, and can withstand the extreme environment of the desert.

[0056] (6) The entire system has no electric components and relies on gravity, capillary force and soil suction to complete the collection, transport and release of water.

[0057] This invention uses an extremely simple, low-cost, and power-free integrated device to achieve the three stages of "efficient water collection", "zero-loss water delivery" and "slow-release irrigation", solving the problems of existing technologies being "individual, inefficient, and complex".

[0058] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A photovoltaic panel surface biomimetic energy-saving water collection and root directional irrigation device, characterized in that, include: A U-shaped water collection trough (1) is used to connect with the lower frame of the photovoltaic panel (4). A water outlet (11) is provided at the bottom of the water collection trough (1). The inner wall of the water collection trough (1) is provided with a water guiding pattern to collect water droplets and guide them to the water outlet (11). A porous ceramic root irrigation device (3) is used to bury the plant at the depth of its main root system to provide water to the plant. The porous ceramic root irrigation device (3) has a microporous structure that is connected to the outside. The capillary delivery tube (2) includes a flexible tube (21) and a capillary fiber line (22) that runs through the flexible tube (21). One end of the flexible tube (21) is connected to the outlet (11) of the water collection tank (1), and one end of the capillary fiber line (22) is inserted into the outlet (11) of the water collection tank (1). The other end of the flexible tube (21) is connected to the microporous structure of the porous ceramic root irrigation device (3), and the other end of the capillary fiber line (22) is inserted into the microporous structure. Under capillary action, the capillary fiber line (22) draws water from the outlet (11) into the microporous structure of the porous ceramic root irrigation device (3).

2. The photovoltaic panel face biomimetic energy saving water harvesting and root directional guided irrigation device according to claim 1, characterized in that, The water-guiding pattern includes: Multiple collection grooves (12) extending from the edge of the water collection tank (1) to the bottom; A flow guide groove (13) is located at the bottom of the water collection tank (1), and the flow guide groove (13) is connected to the water outlet (11) and a plurality of the collection grooves (12); The surface of the collecting groove (12) is a rough surface, while the other areas in the water collection tank (1) other than the collecting groove (12) are smooth surfaces.

3. The photovoltaic panel surface biomimetic energy saving water harvesting and root directional guided irrigation device according to claim 2, characterized in that, The roughness Ra of the rough surface is greater than 3.2 μm, and the roughness Ra of the smooth surface is less than 0.8 μm.

4. The photovoltaic panel face biomimetic energy saving water harvesting and root directional guided irrigation device according to claim 1, characterized in that, The capillary fiber thread (22) is a natural fiber thread or a synthetic fiber thread.

5. The photovoltaic panel face biomimetic energy saving water harvesting and root directional guided irrigation device according to claim 1, characterized in that, The diameter of the capillary filament (22) is 0.5-2 mm.

6. The photovoltaic panel face biomimetic energy saving water harvesting and root directional guided irrigation device, according to claim 1, characterized in that, The capillary delivery tube (2) is provided with pagoda heads (23) at both ends. The pagoda heads (23) are connected to the hose (21). A positioning core (24) is provided in the pagoda head (23). The positioning core (24) is fixedly connected to the inside of the pagoda head (23). The end of the capillary fiber (22) is wound and fixed on the positioning core (24). The capillary fiber (22) is straightened and centered in the hose (21).

7. The photovoltaic panel biomimetic energy-saving water collection and root-guided irrigation device according to claim 1, characterized in that, The porous ceramic root irrigation device (3) is mushroom-shaped, including an umbrella part (31) and a stem part (32). The interior of the umbrella part (31) is a microporous structure that is interconnected. Multiple water outlets (34) are provided on the lower surface of the umbrella part (31), and the multiple water outlets (34) are connected to the microporous structure. One end of the stem part (32) is connected to the lower surface of the umbrella part (31), and a hollow structure (35) is provided inside the stem part (32), and the hollow structure (35) is connected to the microporous structure.

8. The photovoltaic panel biomimetic energy-saving water collection and root-oriented irrigation device according to claim 7, characterized in that, The upper surface of the umbrella part (31) is provided with a water inlet (33) that communicates with the microporous structure. The water inlet (33) is connected to the hose (21), and the end of the capillary fiber (22) is inserted into the microporous structure through the water inlet (33).

9. The photovoltaic panel biomimetic energy-saving water collection and root-oriented irrigation device according to claim 7, characterized in that, The microporous structure inside the umbrella part (31) has a pore size of 10-50 micrometers and a porosity of 30-50%.

10. The photovoltaic panel biomimetic energy-saving water collection and root-oriented irrigation device according to claim 7, characterized in that, The diameter of the umbrella part (31) is 2-5 cm, and the length of the handle part (32) is 4-8 cm.

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