A light-driven antibacterial and dehumidification synergistic system for agricultural greenhouses and its operation method

Abstract

This invention discloses a light-driven antibacterial-dehumidification synergistic system for agricultural greenhouses, comprising an agricultural greenhouse, a light source module, and an antibacterial-dehumidification module. The light source module includes a condenser lens, a first beam splitter, a second beam splitter, and a reflector, capable of generating visible light, ultraviolet light, and infrared light; it also includes visible light emitting elements, ultraviolet light emitting elements, and infrared light emitting elements. The antibacterial-dehumidification module includes a connected processing air channel and a regeneration air channel, which intersect to form a dehumidification zone containing a solid dehumidifier. The processing air channel has a sterilization zone, and both ends of the dehumidification zone are equipped with three-way reversing valves. By adopting the above configuration, sunlight can be concentrated and split, and matched with the emitting elements to provide visible light, ultraviolet light, and infrared light around the clock, promoting crop photosynthesis, air sterilization, and dehumidifier photothermal regeneration. This constructs a new, efficient, safe, and multi-purpose synergistic approach to solar energy development and utilization, providing a green and efficient antibacterial-dehumidification technology solution for agricultural greenhouses.

Description

Technical Field

[0001] This invention belongs to the field of agricultural greenhouse antibacterial-dehumidification technology, specifically relating to an agricultural greenhouse light-driven antibacterial-dehumidification synergistic system and its operation method. Background Technology

[0002] Modern agricultural greenhouse production has long faced the dual challenges of humidity control and disease prevention. Under intensive farming models, factors such as crop transpiration, irrigation evaporation, and limited ventilation in enclosed spaces combine to create a highly humid microclimate within the greenhouse. In greenhouses for fruits and vegetables like tomatoes and cucumbers, the relative humidity typically exceeds 80% day and night, sometimes reaching over 95% at night. This high humidity provides ideal conditions for the reproduction of pathogenic microorganisms. For example, the germination rate of gray mold spores increases more than threefold when relative humidity is above 90%, and the infection probability of downy mildew increases exponentially with increasing humidity. More seriously, high humidity not only directly exacerbates disease risk but also weakens the crop's own resistance through multiple physiological mechanisms. When dew forms on crop leaves, the stomatal opening decreases, significantly reducing the rate of carbon dioxide absorption and leading to a deterioration in photosynthetic efficiency. Simultaneously, excessive humidity inhibits the absorption of key elements such as calcium and magnesium by the roots, resulting in increased fruit deformities and insufficient sugar accumulation, among other quality problems. Therefore, how to achieve synergistic treatment of sterilization and dehumidification in agricultural greenhouses has become a key challenge in improving the high-efficiency production capacity of agricultural greenhouses.

[0003] For a long time, natural / forced ventilation, natural cold source condensation, and traditional compression heat pumps have been the most common methods for controlling relative humidity in agricultural greenhouses, but they have limitations such as difficulty in handling high humidity loads and high energy consumption. With the development of solar thermal utilization technology in agricultural greenhouse production processes, solar-driven solid-state dehumidification air conditioning systems have received close attention, as they can effectively reduce dehumidification energy consumption in agricultural greenhouses and meet the needs of handling high humidity loads. However, current solar solid-state dehumidification air conditioning systems still suffer from problems such as a single form of solar thermal utilization and insufficient energy efficiency. The systems require large-volume heat collection systems and complex heating circuits, which restricts their technical and economic viability.

[0004] Meanwhile, disease control in agricultural greenhouses heavily relies on the periodic spraying of chemical fungicides. Although these can quickly suppress the spread of pathogens in the short term, long-term use can easily lead to excessive drug residues, threatening not only the safety and quality of agricultural products but also accelerating the evolution of drug resistance in pathogens and even disrupting the ecological balance of beneficial microbial communities in greenhouses, weakening the system's natural disease resistance. Ultraviolet (UV) sterilization technology, as a physical disinfection method to replace chemical agents, can reduce drug dependence, but its application is limited by a specific time window. To avoid photoinhibition damage to crops from UV light, sterilization operations often need to avoid periods of active photosynthesis, resulting in the inability to promptly block the spread of pathogens during peak humidity periods. Therefore, existing technologies still struggle to achieve the dual goals of efficient humidity control and dynamic disease prevention, severely restricting greenhouse production efficiency and product quality.

[0005] To address the aforementioned problems, this invention proposes a light-driven antibacterial-dehumidification synergistic system and operation method for agricultural greenhouses. By concentrating and splitting sunlight and matching it with auxiliary LED light-emitting tubes, visible light, ultraviolet light, and infrared light are provided around the clock to promote crop photosynthesis, treat air sterilization, and regenerate the solid dehumidifier through photothermal regeneration. This constructs a new, efficient, safe, and multi-purpose synergistic approach to the development and utilization of solar energy, providing a green and efficient antibacterial-dehumidification technology solution for agricultural greenhouses. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, the present invention aims to provide an agricultural greenhouse light-driven antibacterial-dehumidification synergistic system and operation method, which can concentrate and disperse sunlight and match auxiliary light-emitting components to provide visible light, ultraviolet light and infrared light all day long, which are respectively used to promote crop photosynthesis, treat air sterilization and photothermal regeneration of solid dehumidifier.

[0007] The objective of this invention is achieved through the following technical solution:

[0008] An agricultural greenhouse light-driven antibacterial-dehumidification synergistic system includes an agricultural greenhouse, and a light source module and an antibacterial-dehumidification module installed in the agricultural greenhouse;

[0009] The light source module includes a condenser, a first beam splitter, a second beam splitter, and a reflector arranged sequentially along the direction of illumination. After sunlight is focused by the condenser, it passes through the first beam splitter, the second beam splitter, and the reflector in sequence to generate visible light, ultraviolet light, and infrared light, respectively. The light source module also includes a visible light emitting element, an ultraviolet light emitting element, and an infrared light emitting element.

[0010] The antibacterial-dehumidification module includes a processing air channel and a regeneration air channel that are connected to each other. The processing air channel has an air inlet A and an air outlet B. The regeneration air channel has an air inlet C and an air outlet D that are both connected to the outside of the agricultural greenhouse. A dehumidification zone is set at the intersection of the processing air channel and the regeneration air channel. The dehumidification zone is equipped with a solid dehumidifier. A sterilization zone is set on the side of the processing air channel near the air inlet A. A first three-way reversing valve and a second three-way reversing valve are respectively set at both ends of the dehumidification zone. The air inlet C corresponds to the air inlet A through the first three-way reversing valve, and the air outlet D corresponds to the air outlet B through the second three-way reversing valve. The port of the light source module that generates ultraviolet light faces the sterilization zone, and the port of the light source module that generates infrared light can face the dehumidification zone.

[0011] Furthermore, the air inlet A is equipped with a first fan, and the air inlet C is equipped with a second fan.

[0012] Furthermore, the portions of the processing air channel and / or regenerated air channel located in the sterilization zone and dehumidification zone are made of transparent quartz glass material, and the inner circumferential surface of the sterilization zone is coated with a photocatalytic coating.

[0013] Furthermore, the solid dehumidifier adopts a plate-fin heat exchanger, the frame of the solid dehumidifier is made of transparent quartz glass, and the solid dehumidifier is provided with multiple layers of alternating desiccant channels and light conduction channels, the light conduction channel layer being made of transparent quartz light guide tubes.

[0014] Furthermore, the desiccant channel layer is coated with a drying coating, which is made of photosensitive MOFs material or carbon-based composite material, and the interior of the light transmission channel layer is filled with a high refractive index medium.

[0015] Furthermore, the light source module is suspended from the top of the agricultural greenhouse by a suspension device. The light source module includes a condenser lens, a first beam splitter, a second beam splitter, a reflector, a visible light emitting element, an ultraviolet light emitting element, and an infrared light emitting element mounted in a frame. The condenser lens is rotatably mounted within the frame and can be adjusted to a certain extent according to the angle of solar incidence. The reflector is rotatably mounted within the frame and can reflect the infrared light generated by the light source module to a solid dehumidifier or the external heat dissipation area of ​​the agricultural greenhouse.

[0016] Furthermore, the frame has a visible light outlet, an ultraviolet light outlet, and an infrared light outlet. The visible light outlet faces the plants inside the agricultural greenhouse, the ultraviolet light outlet faces the sterilization area, the infrared light outlet faces the dehumidification area, the reflection of the reflector faces the infrared light outlet, and the ultraviolet light of the first beam splitter faces the ultraviolet light outlet.

[0017] Furthermore, the visible light emitting element is a visible light bulb, and the visible light emitting element is opposite to the visible light outlet; the ultraviolet light emitting element is an ultraviolet light bulb, and the ultraviolet light emitting element is opposite to the ultraviolet light outlet; the infrared light emitting element is an infrared light bulb, and the infrared light emitting element is opposite to the infrared light outlet.

[0018] A method for operating a light-driven antibacterial-dehumidification synergistic system in an agricultural greenhouse, employing the aforementioned antibacterial-dehumidification synergistic system, includes the following steps:

[0019] Daytime mode: The visible light, ultraviolet light, and infrared light emitters in the light source module are turned off. The light source module focuses sunlight through a condenser lens. The high-energy-density light source is then split by a first beam splitter. The visible light portion is reflected to the plant leaves in the agricultural greenhouse to supply photosynthesis. The remaining ultraviolet and infrared light portions enter a second beam splitter. The ultraviolet light portion is reflected by the second beam splitter to the sterilization zone to sterilize the air in the agricultural greenhouse. The remaining infrared light is reflected by a reflector to the dehumidification zone to regenerate the solid dehumidifier through photothermal regeneration.

[0020] Insufficient light intensity in daytime mode / Nighttime mode: The visible light emitting element, ultraviolet light emitting element, and infrared light emitting element in the light source module are activated to generate visible light, ultraviolet light, and infrared light respectively, which are used for plant photosynthesis in agricultural greenhouses, for air sterilization in the sterilization zone, and for photothermal regeneration of solid dehumidifiers in the dehumidification zone.

[0021] When the dehumidification zone is operating in dehumidification mode, the first three-way reversing valve and the second three-way reversing valve are adjusted to connect the air inlet A, the dehumidification zone, and the air outlet B. Then, the first fan is started, and the processed air inside the agricultural greenhouse flows to the sterilization zone for sterilization through the first fan. Then, it flows into the solid dehumidifier where water vapor is adsorbed to reduce the air humidity. Finally, it flows out of the solid dehumidifier and returns to the room. At this time, if the light source module is in daytime mode with sufficient sunlight, the infrared light generated by the light source module will be reflected to the outdoor heat dissipation area through the rotatable reflector. If the light source module is in daytime mode with insufficient sunlight or nighttime mode, the infrared light emitting element of the light source module will stop working.

[0022] When the dehumidification zone is in regeneration mode, the air inlet C, the dehumidification zone, and the air outlet D are connected by adjusting the first three-way reversing valve and the second three-way reversing valve. Then, the second fan is started, and the air outside the agricultural greenhouse is introduced into the dehumidification zone for regeneration and purging through the second fan. The regenerated exhaust gas is discharged outdoors. At this time, if the light source module is in daytime mode with sufficient sunlight, the infrared light generated by the light source module will be reflected by the rotatable reflector to the solid dehumidifier for photothermal regeneration. If the light source module is in daytime mode with insufficient sunlight or nighttime mode, the infrared light-emitting element is activated.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The agricultural greenhouse light-driven antibacterial-dehumidification synergistic system and operation method of this invention can achieve efficient frequency-division utilization and multi-functional synergy of the full spectrum of sunlight, breaking through the limitations of single and low-efficiency photothermal utilization in agricultural greenhouses. By concentrating and splitting sunlight and matching it with light-emitting components, visible light, ultraviolet light, and infrared light are provided around the clock to promote crop photosynthesis, treat air sterilization, and regenerate solid dehumidifiers, respectively, achieving "on-demand distribution and all-day supply" of light energy. This system replaces the traditional solar heat collection-heating mode with direct-drive solid desiccant regeneration using light energy, reducing energy consumption and system complexity. Furthermore, it replaces chemical agents with physical disinfection using ultraviolet light, setting up an ultraviolet sterilization zone isolated from crops to avoid photoinhibition damage to crop growth. This achieves low-energy consumption and zero-pollution antibacterial-dehumidification in agricultural greenhouses, constructing a new, efficient, safe, and multi-purpose synergistic approach to solar energy development and utilization, and providing a green and efficient antibacterial-dehumidification technology solution for agricultural greenhouses. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a light-driven antibacterial-dehumidification synergistic system for agricultural greenhouses, according to an embodiment of the present invention.

[0026] Figure 2 This is a schematic diagram of the light source module structure.

[0027] Figure 3 This is a schematic diagram of a solid dehumidifier.

[0028] In the diagram: 1. Agricultural greenhouse; 2. First fan; 3. Air handling channel; 4. Light source module; 40. Frame; 401. Visible light outlet; 402. Ultraviolet light outlet; 403. Infrared light outlet; 41. Condenser lens; 42. First beam splitter; 43. Second beam splitter; 44. Reflector; 45. Infrared light emitter; 46. Ultraviolet light emitter; 47. Visible light emitter; 5. First three-way reversing valve; 6. Second fan; 7. Antibacterial-dehumidification module; 71. Sterilization zone; 72. Dehumidification zone; 8. Solid dehumidifier; 81. Desiccant channel layer; 82. Desiccant channel layer fins; 83. Light transmission channel layer; 9. Second three-way reversing valve; 10. Regenerated air channel; I. Visible light; II. Ultraviolet light; III. Infrared light. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Terms such as “upper,” “inner,” “middle,” “left,” “right,” and “one” used in this specification are merely for clarity of description and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0030] This invention addresses the challenge of achieving both efficient humidity control and dynamic disease prevention in existing technologies, which severely restricts greenhouse production efficiency and product quality. Therefore, it proposes a light-driven antibacterial-dehumidification synergistic system and its operation method for an agricultural greenhouse. By concentrating and splitting sunlight and matching it with auxiliary LEDs, it provides visible light (I), ultraviolet light (II), and infrared light (III) around the clock. These are used to promote crop photosynthesis, treat air sterilization, and regenerate the solid dehumidifier (8) through photothermal processes. This constructs a new, efficient, safe, and multi-purpose synergistic approach to solar energy development and utilization, providing a green and efficient antibacterial-dehumidification technology solution for the agricultural greenhouse.

[0031] The following provides a detailed description of the structure and operation method of the light-driven antibacterial-dehumidification synergistic system for agricultural greenhouse 1 of the present invention:

[0032] Example 1

[0033] A light-driven antibacterial-dehumidification synergistic system for an agricultural greenhouse, such as Figures 1 to 3 As shown, it includes an agricultural greenhouse 1, and a light source module 4 and an antibacterial-dehumidification module 7 installed inside the agricultural greenhouse 1.

[0034] The light source module 4 is suspended from the top of the agricultural greenhouse 1 by a suspension device. The light source module 4 includes a frame 40, and a condenser lens 41, a first beam splitter 42, a second beam splitter 43, and a reflector 44 mounted on the frame 40 by a supporting structure (such as rods or brackets). The condenser lens 41, the first beam splitter 42, the second beam splitter 43, and the reflector 44 are arranged sequentially along the direction of sunlight. After sunlight is concentrated by the condenser lens 41, it passes through the first beam splitter 42, the second beam splitter 43, and the reflector 44 in sequence to generate visible light I, ultraviolet light II, and infrared light III, respectively. The light source module 4 also includes a visible light emitting element 47, an ultraviolet light emitting element 46, and an infrared light emitting element 45. Among them, visible light I is used for photosynthesis of plants in the agricultural greenhouse 1, ultraviolet light II is used for sterilization of indoor air, and infrared light III is used for photothermal regeneration of the solid dehumidifier 8.

[0035] The antibacterial-dehumidification module 7 includes a connected processing air channel 3 and a regeneration air channel 10. The processing air channel 3 has an air inlet A and an air outlet B connected to the interior, with a first fan 2 installed at the air inlet A. The regeneration air channel 10 has an air inlet C and an air outlet D both connected to the outside of the agricultural greenhouse 1, with a second fan 6 installed at the air inlet C. A dehumidification zone 72 is located at the intersection of the processing air channel 3 and the regeneration air channel 10, and a solid dehumidifier 8 is installed in the dehumidification zone 72. A sterilization zone 71 is located on the side of the processing air channel 3 near the air inlet A. The channels of the dehumidification zone 72 and the sterilization zone 71 are both made of light-transmitting material. A first three-way reversing valve 5 and a second three-way reversing valve 9 are respectively installed at both ends of the dehumidification zone 72. The air inlet C corresponds to the air inlet A through the first three-way reversing valve 5, and the air outlet D corresponds to the air outlet B through the second three-way reversing valve 9. The port of the light source module 4 that generates ultraviolet light II faces the sterilization zone 71 and is used to sterilize indoor air; the port of the light source module 4 that generates infrared light III can face the dehumidification zone 72 and is used to perform photothermal regeneration of the solid dehumidifier 8.

[0036] Based on this, when the light-driven antibacterial-dehumidification synergistic system of the agricultural greenhouse 1 of the present invention is working, the light source module 4 mainly has daytime mode and nighttime mode, and the solid dehumidifier 8 in the antibacterial-dehumidification module 7 will also alternate between dehumidification and regeneration states according to the daytime mode and nighttime mode.

[0037] When there is sufficient sunlight in daytime mode, the light source module 4 uses sunlight to separate visible light I, ultraviolet light II, and infrared light III. When there is insufficient sunlight in daytime mode / nighttime mode, the visible light emitting element 47, ultraviolet light emitting element 46, and infrared light emitting element 45 of the light source module 4 will be activated to generate visible light I, ultraviolet light II, and infrared light III respectively, which are used for crop photosynthesis, air sterilization treatment, and desiccant photothermal regeneration in sequence. When the solid dehumidifier 8 of the antibacterial-dehumidification module 7 is in dehumidification mode, the air inside the agricultural greenhouse 1 is driven by the first fan 2 and enters the sterilization zone 71 for sterilization and the dehumidification zone 72 for dehumidification through the air inlet A. After completing the internal circulation, the air returns to the room through the air outlet B. At this time, the light source module 4 does not need to provide infrared light III to the solid dehumidifier 8. When the solid dehumidifier 8 of the antibacterial-dehumidification module 7 is in regeneration mode, the air outside the agricultural greenhouse 1 is driven by the second fan 6 and introduced into the dehumidification zone 72 through the air inlet C for regeneration and purging of the solid dehumidifier 8. The regeneration exhaust gas is discharged to the outside through the air outlet D. At this time, the light source module 4 provides infrared light III to the solid dehumidifier 8.

[0038] Regarding light source module 4, such as Figures 1 to 2 As shown, the known light source module 4 integrates a natural light path and an auxiliary light path. In the natural light path, visible light I, ultraviolet light II, and infrared light III are generated through the focusing and splitting of sunlight. In the auxiliary light path, visible light I, ultraviolet light II, and infrared light III can be generated through the internally set visible light emitting element 47, ultraviolet light emitting element 46, and infrared light emitting element 45. The visible light emitting element 47, ultraviolet light emitting element 46, and infrared light emitting element 45 are independently set in the frame 40 and can be individually started and stopped by setting a program. The starting and stopping of the emitting elements is mainly controlled by the built-in light sensor sensing the light intensity.

[0039] In this embodiment, the condenser lens 41 is rotatably mounted within the frame 40. The condenser lens 41 can be rotated and adjusted to a certain extent according to the solar incidence angle to improve the utilization rate of sunlight. Furthermore, the focusing process is beneficial for generating a high-energy-density light source, enhancing the sterilization treatment of the air inside the agricultural greenhouse 1 and the photothermal regeneration of the solid dehumidifier 8 in the dehumidification zone 72. The reflector 44 is rotatably mounted within the frame 40, capable of reflecting the infrared light III generated by the light source module 4 to the solid dehumidifier 8 or the external heat dissipation area of ​​the agricultural greenhouse 1.

[0040] In this embodiment, the frame 40 has a visible light outlet 401, an ultraviolet light outlet 402, and an infrared light outlet 403. The remaining areas are protected by a light-shielding structure to prevent harmful light sources from adversely affecting the plants inside the agricultural greenhouse 1. Specifically, the visible light outlet 401 faces the plants inside the agricultural greenhouse 1, the ultraviolet light outlet 402 faces the sterilization area, the infrared light outlet 403 faces the dehumidification area 72, the reflection from the reflector 44 faces the infrared light outlet 403, and the ultraviolet light outlet 402 from the first beam splitter 42 faces the ultraviolet light outlet 402.

[0041] In this embodiment, the visible light emitting element 47 is a visible light bulb or a visible light LED, and the visible light emitting element 47 is opposite to the visible light outlet 401; the ultraviolet light emitting element 46 is an ultraviolet light bulb or an ultraviolet light LED, and the ultraviolet light emitting element 46 is opposite to the ultraviolet light outlet 402; the infrared light emitting element 45 is an infrared light bulb or an infrared light LED, and the infrared light emitting element 45 is opposite to the infrared light outlet 403.

[0042] Regarding the antibacterial-dehumidification module 7, such as Figures 1 to 3 As shown, the antibacterial-dehumidification module 7 integrates a sterilization zone 71 and a dehumidification zone 72 for processing air. The portions of the processed air channel 3 and / or the regeneration air channel 10 located in the sterilization zone 71 and dehumidification zone 72 are made of transparent quartz glass. Therefore, ultraviolet light II from the light source module 4 irradiates the processed air for sterilization, while the dehumidification zone 72 receives infrared light III from the light source module 4 for photothermal regeneration of the solid-state dehumidifier 8. The fully desorbed solid-state dehumidifier 8 is then used to dehumidify the sterilized processed air and reduce its humidity. Furthermore, the inner circumferential surface of the sterilization zone 71 is coated with a photocatalytic coating to generate active oxygen and enhance the sterilization effect. The ultraviolet light II and infrared light III generated by the light source module 4 are transmitted to the sterilization zone 71 and dehumidification zone 72 of the antibacterial-dehumidification module 7, while the remaining areas of the processed air channel 3 and the regeneration air channel 10 are shielded to prevent harmful light sources from adversely affecting the crops in the agricultural greenhouse 1.

[0043] The solid-state dehumidifier 8 adopts a multi-layer structure of a plate-fin heat exchanger. It includes multiple alternating layers of desiccant channels 81 and light conduction channels 83. The desiccant coating is made of photosensitive MOFs or carbon-based composite materials. The frame 40 of the solid-state dehumidifier 8 is made of transparent quartz glass. The desiccant channel layers 81 can be configured with fins 82 to increase the desiccant coating area or the mass transfer porosity of the desiccant in the filling layer. Both the frame 40 and the light conduction channel layers 83 are made of transparent quartz light guides, filled with a high-refractive-index medium. Infrared light III is refracted to each desiccant channel layer 81 through a microprism structure on the upper surface of the solid-state dehumidifier 8 or the sidewall of the light conduction channel layer 93.

[0044] In summary, the light-driven antibacterial-dehumidification synergistic system for the agricultural greenhouse 1 of the present invention has a transparent quartz glass channel in the sterilization zone 71 and dehumidification zone 72 of the antibacterial-dehumidification module 7, which is placed in the processing air channel 3 and the regeneration air channel 10. The remaining air ducts can be made of ordinary pipes. The first fan 2 drives the processing air inside the agricultural greenhouse 1 to flow in through the air inlet A, and flows through the solid dehumidifier 8 in the sterilization zone 71 and dehumidification zone 72 of the antibacterial-dehumidification module 7 to perform sterilization and dehumidification treatment of the processing air. The clean and dry air obtained is internally circulated and returned to the room through the air outlet B. The entire process constitutes a processing air circulation duct. After the solid dehumidifier 8 is saturated with moisture, the outside air of the agricultural greenhouse 1 is introduced through the air inlet C by the second fan 6 and flows through the solid dehumidifier 8 in the antibacterial-dehumidification module 7 in the regeneration state to carry out photothermal regeneration of the solid dehumidifier 8. The generated regeneration waste gas is discharged to the outside through the air outlet D. The whole process constitutes a regeneration air circulation duct.

[0045] Example 2

[0046] A method for operating a light-driven antibacterial-dehumidification synergistic system in an agricultural greenhouse 1, using the antibacterial-dehumidification synergistic system of Example 1, includes the following method:

[0047] Daytime mode: The visible light emitter 47, ultraviolet light emitter 46, and infrared light emitter 45 in the light source module 4 are turned off. The light source module 4 focuses sunlight through the condenser lens 41. The high energy density light source generated is split by the first beam splitter 42. The visible light I portion is reflected to the plant leaves of the agricultural greenhouse 1 to supply photosynthesis. The remaining ultraviolet light II and infrared light III portions enter the second beam splitter 43. The ultraviolet light II portion is reflected by the second beam splitter 43 to the sterilization zone 71 to sterilize the gas in the agricultural greenhouse 1. The remaining infrared light III portion is reflected by the reflector 44 to the dehumidification zone 72 to perform photothermal regeneration of the solid dehumidifier 8.

[0048] Insufficient light intensity in daytime mode / Nighttime mode: Activate the visible light emitting element 47, ultraviolet light emitting element 46, and infrared light emitting element 45 in the light source module 4 to generate visible light I, ultraviolet light II, and infrared light III respectively, which are used for plant photosynthesis in agricultural greenhouse 1, for air sterilization in sterilization zone 71, and for photothermal regeneration of solid dehumidifier 8 in dehumidification zone 72.

[0049] In both modes, when the dehumidification zone 72 is in dehumidification mode, the first three-way reversing valve 5 and the second three-way reversing valve 9 are adjusted to connect the air inlet A, the dehumidification zone 72, and the air outlet B. Then, the first fan 2 is started, and the processed air inside the agricultural greenhouse 1 flows to the sterilization zone 71 through the first fan 2 for sterilization. Then, it flows into the solid dehumidifier 8 to reduce the air humidity by adsorbing water vapor, and finally flows out of the solid dehumidifier 8 and returns to the room. At this time, if the light source module 4 is in daytime mode with sufficient sunlight, the infrared light III generated by the light source module 4 will be reflected to the outdoor heat dissipation area through the rotatable reflector 44. If the light source module 4 is in daytime mode with insufficient sunlight or nighttime mode, the infrared light emitting element 45 of the light source module 4 will stop working.

[0050] In both modes, when the dehumidification zone 72 is in regeneration mode, the first three-way reversing valve 5 and the second three-way reversing valve 9 are adjusted to connect the air inlet C, the dehumidification zone 72, and the air outlet D. Then, the second fan 6 is started, and the air outside the agricultural greenhouse 1 is introduced into the dehumidification zone 72 for regeneration and purging through the second fan 6. The regenerated exhaust gas is discharged outdoors. At this time, if the light source module 4 is in daytime mode with sufficient sunlight, the infrared light III generated by the light source module 4 will be reflected by the rotatable reflector 44 to the solid dehumidifier 8 for photothermal regeneration. If the light source module 4 is in daytime mode with insufficient sunlight or nighttime mode, the infrared light emitting element 45 is activated.

[0051] The light-driven antibacterial-dehumidification synergistic system and operating method for agricultural greenhouse 1 of the present invention are universally applicable to the air sterilization and dehumidification needs of agricultural greenhouse 1 under different seasonal climates. When the solid dehumidifier 8 in the light-driven antibacterial-dehumidification synergistic system adsorbs water vapor, it will simultaneously release adsorption heat. The heat generated can be used for indoor heating of agricultural greenhouse 1 in winter, while in agricultural greenhouse 1 in summer, the system can be easily connected with various mature refrigeration and air conditioning equipment to create a clean, temperature and humidity-appropriate air environment for agricultural greenhouse 1.

[0052] The embodiments of the present invention are not limited thereto. Based on the above description of the present invention, and using common technical knowledge and conventional means in the field, the present invention can be modified, replaced or combined in various other forms without departing from the basic technical idea of ​​the present invention, and all such modifications, replacements or combinations fall within the scope of protection of the present invention.

Claims

1. An agricultural greenhouse light-driven antibacterial-dehumidification synergistic system, characterized in that, It includes an agricultural greenhouse, and a light source module and an antibacterial-dehumidification module installed inside the agricultural greenhouse; The light source module includes a condenser, a first beam splitter, a second beam splitter, and a reflector arranged sequentially along the direction of illumination. After sunlight is focused by the condenser, it passes through the first beam splitter, the second beam splitter, and the reflector in sequence to generate visible light, ultraviolet light, and infrared light, respectively. The light source module also includes a visible light emitting element, an ultraviolet light emitting element, and an infrared light emitting element. The antibacterial-dehumidification module includes a processing air channel and a regeneration air channel that are connected to each other. The processing air channel has an air inlet A and an air outlet B. An air inlet A is equipped with a first fan, and an air inlet C is equipped with a second fan. The regeneration air channel has an air inlet C and an air outlet D that are both connected to the outside of the agricultural greenhouse. A dehumidification zone is set at the intersection of the processing air channel and the regeneration air channel. The dehumidification zone is equipped with a solid dehumidifier. A sterilization zone is set on the side of the processing air channel near the air inlet A. A first three-way reversing valve and a second three-way reversing valve are respectively set at both ends of the dehumidification zone. The air inlet C corresponds to the air inlet A through the first three-way reversing valve, and the air outlet D corresponds to the air outlet B through the second three-way reversing valve. The port of the light source module that generates ultraviolet light faces the sterilization zone, and the port of the light source module that generates infrared light can face the dehumidification zone. The portions of the processing air channel and / or regenerated air channel located in the sterilization zone and dehumidification zone are made of transparent quartz glass material, and the inner circumferential surface of the sterilization zone is coated with a photocatalytic coating. The solid dehumidifier uses a plate-fin heat exchanger and has multiple layers of alternating desiccant channels and light conduction channels. The frame of the solid dehumidifier is made of transparent quartz glass. The desiccant channel layer is coated with a drying coating. The desiccant channel layer can be configured with a fin structure to increase the coating area of ​​the drying coating or to increase the mass transfer void of the desiccant in the filling layer. The drying coating is made of photosensitive MOFs material or carbon-based composite material. The light transmission channel layer is made of a transparent quartz light guide, and the interior of the light transmission channel layer is filled with a high refractive index medium; The light source module is suspended from the top of the agricultural greenhouse by a suspension device. The light source module also includes a frame for installing a condenser lens, a first beam splitter, a second beam splitter, a reflector, a visible light emitting element, an ultraviolet light emitting element, and an infrared light emitting element. The condenser lens is rotatably installed within the frame of the light source module, and the condenser lens can be rotated and adjusted according to the angle of solar incidence. The reflector is rotatably installed within the frame of the light source module, and can reflect the infrared light generated by the light source module to a solid dehumidifier or the external heat dissipation area of ​​the agricultural greenhouse.

2. The agricultural greenhouse light-driven antibacterial-dehumidification synergic system of claim 1, wherein, The frame of the light source module has a visible light outlet, an ultraviolet light outlet, and an infrared light outlet. The visible light outlet faces the plants in the agricultural greenhouse, the ultraviolet light outlet faces the sterilization area, the infrared light outlet faces the dehumidification area, the reflection of the reflector faces the infrared light outlet, and the ultraviolet light of the first beam splitter faces the ultraviolet light outlet.

3. The agricultural greenhouse light-driven antibacterial-dehumidification synergic system of claim 2, wherein, The visible light emitting element is a visible light bulb, and the visible light emitting element is opposite to the visible light outlet; the ultraviolet light emitting element is an ultraviolet light bulb, and the ultraviolet light emitting element is opposite to the ultraviolet light outlet; the infrared light emitting element is an infrared light bulb, and the infrared light emitting element is opposite to the infrared light outlet.

4. A method for operating an agricultural greenhouse light-driven antibacterial-dehumidification synergistic system, characterized in that, The antibacterial-dehumidification synergistic system as described in claim 2 or 3 includes the following steps: Daytime mode: The visible light, ultraviolet light, and infrared light emitters in the light source module are turned off. The light source module focuses sunlight through a condenser lens. The high-energy-density light source is then split by a first beam splitter. The visible light portion is reflected to the plant leaves in the agricultural greenhouse to supply photosynthesis. The remaining ultraviolet and infrared light portions enter a second beam splitter. The ultraviolet light portion is reflected by the second beam splitter to the sterilization zone to sterilize the air in the agricultural greenhouse. The remaining infrared light is reflected by a reflector to the dehumidification zone to regenerate the solid dehumidifier through photothermal regeneration. Insufficient light intensity in daytime mode / Nighttime mode: The visible light emitting element, ultraviolet light emitting element, and infrared light emitting element in the light source module are activated to generate visible light, ultraviolet light, and infrared light respectively, which are used for plant photosynthesis in agricultural greenhouses, for air sterilization in the sterilization zone, and for photothermal regeneration of solid dehumidifiers in the dehumidification zone.

5. The operation method of the light-driven antibacterial-dehumidification synergistic system for agricultural greenhouses as described in claim 4, characterized in that, When the dehumidification zone is in dehumidification mode, the first three-way reversing valve and the second three-way reversing valve are adjusted to connect the air inlet A, the dehumidification zone, and the air outlet B. Then the first fan is started, and the treated air inside the agricultural greenhouse flows to the sterilization zone through the first fan for sterilization treatment. Then it flows into the solid dehumidifier to reduce the air humidity by adsorbing water vapor. Finally, it flows out of the solid dehumidifier and returns to the room. At this time, if the light source module is in daytime mode with sufficient sunlight, the infrared light generated by the light source module will be reflected to the outdoor heat dissipation area through the rotatable reflector. If the light source module is in daytime mode with insufficient sunlight or nighttime mode, the infrared light emitting component of the light source module will stop working. When the dehumidification zone is in regeneration mode, the air inlet C, the dehumidification zone, and the air outlet D are connected by adjusting the first three-way reversing valve and the second three-way reversing valve. Then, the second fan is started, and the air outside the agricultural greenhouse is introduced into the dehumidification zone for regeneration and purging through the second fan. The regenerated exhaust gas is discharged outdoors. At this time, if the light source module is in daytime mode with sufficient sunlight, the infrared light generated by the light source module will be reflected by the rotatable reflector to the solid dehumidifier for photothermal regeneration. If the light source module is in daytime mode with insufficient sunlight or nighttime mode, the infrared light-emitting element is activated.

Images