A plant oxygen chamber system for resource recycling and its control method

Abstract

This invention discloses a plant oxygen chamber system and control method for resource reuse, belonging to the field of green building and resource reuse technology. The device includes a plant oxygen chamber, an air conditioning supply and exhaust system, a plant irrigation and drainage system, and a solar energy storage system. The plant oxygen chamber is a closed viewing space where plants generate oxygen, and it is equipped with a CO2 monitoring device. The air conditioning supply and exhaust system includes a soil pre-cooling and preheating fresh air duct on the plant oxygen chamber side and supply and exhaust pipes inside the chamber, as well as supply and exhaust pipes on the side of the rooms used by personnel. The plant irrigation and drainage system includes an air conditioning condensate recovery pipe, an underground water tank, irrigation branch pipes, and drainage pipes. The solar energy storage system includes rooftop photovoltaic equipment and in-chamber electrical energy storage equipment. The condensate and indoor carbon dioxide generated by the air conditioning are recovered and reused in the plant oxygen chamber, and the fresh air generated by the plants is delivered to the rooms. Combined with the rooftop solar photovoltaic panels, green electricity is used for the irrigation system, forming a complete plant oxygen chamber system for resource reuse, improving the performance of green buildings.

Description

Technical Field

[0001] This invention relates to the field of green building and resource recycling technology, specifically to a plant oxygen chamber system for resource recycling, and more particularly to a plant oxygen chamber system and control method that integrates functions such as air conditioning condensate recovery, indoor carbon dioxide recycling, solar photovoltaic power generation, and soil temperature regulation and fresh air pretreatment. It is applicable to the synergistic improvement of green plant maintenance and air quality in indoor environments such as office buildings and public buildings. Background Technology

[0002] With the increasing demands for indoor environmental quality in modern architecture, setting up green areas inside office and public buildings has become an important means of improving air quality and enhancing occupant comfort. Green areas not only release oxygen and absorb carbon dioxide through photosynthesis, but also regulate the indoor microclimate and have a certain psychological soothing effect. However, the current setup and operation of green areas still face the following technical challenges: First, the irrigation water for green areas in existing buildings is mostly drawn directly from municipal tap water, failing to effectively utilize the recyclable water resources within the buildings. Air conditioning systems generate a large amount of condensate during operation; this water is low in temperature and of good quality, but it is currently mostly discharged directly without proper utilization, resulting in water waste.

[0003] Secondly, during the operation of the air conditioning system, the carbon dioxide produced by indoor occupants' respiration is usually directly discharged outdoors through the exhaust system, failing to effectively utilize it as a carbon source for plant photosynthesis. At the same time, the fresh air generated in the green areas is not effectively transported to the areas where people are active, resulting in the air purification benefits of the plants being limited to localized areas, and the overall improvement in air quality within the building space being limited.

[0004] Third, irrigation and ventilation equipment in existing buildings' green areas mostly rely on mains power, resulting in high energy consumption. Although some buildings have attempted to introduce solar photovoltaic systems, their application is often separate from green areas, failing to form an integrated and coordinated power supply and operation mechanism.

[0005] Fourth, in the fresh air treatment stage of building air conditioning systems, traditional methods often directly use mechanical refrigeration or heating to treat the temperature of fresh air, which consumes a lot of energy. Soil has natural heat storage and temperature regulation capabilities, but it is rarely used in the pretreatment of fresh air in existing buildings, especially in the lack of systematic design in its integration with the soil structure of green areas.

[0006] Existing technologies for green areas, building air conditioning systems, water recycling, renewable energy utilization, and soil temperature regulation are largely fragmented, lacking systematic integrated design and collaborative control mechanisms. This results in low resource utilization efficiency, high energy consumption, and underutilization of the purification benefits of greenery. Therefore, there is an urgent need to develop a plant oxygen chamber technology that enables multi-system resource reuse and collaborative operation to improve the overall performance of green buildings. Summary of the Invention

[0007] The purpose of this invention is to address the aforementioned problems by providing a resource-recycling plant oxygen chamber system and control method. This system recycles condensate and indoor carbon dioxide generated by air conditioning for reuse in the plant oxygen chamber, delivers fresh air generated by the plants to the rooms, and utilizes green electricity generated by solar photovoltaic panels on the roof for irrigation, thus forming a complete resource-recycling plant oxygen chamber system and improving the performance of green buildings.

[0008] The technical solution of the present invention is as follows: A plant oxygen chamber system for resource recycling, comprising: The plant oxygen chamber is a closed space containing a soil layer for growing plants and a CO2 monitoring device for detecting carbon dioxide concentration. The air conditioning supply and exhaust system includes a first fresh air duct, a second fresh air duct, a first exhaust air duct, and a second exhaust air duct installed on the side of the plant oxygen chamber, as well as an air supply outlet and a first exhaust air outlet installed on the side of the personnel room. The first fresh air duct is buried in the soil layer to introduce outdoor fresh air and use the soil temperature for pre-cooling or preheating; the second fresh air duct is installed inside the plant oxygen chamber to introduce air from inside the chamber. The first duct connects to the interior of the plant oxygen chamber to deliver air from the personnel room into the chamber; the second duct connects to the outside to exhaust air directly to the outside. The plant irrigation and drainage system includes a condensate recovery pipe connected to the air conditioner condensate outlet, a water storage tank buried in the soil layer, an irrigation water supply pipe connecting the water storage tank and the plant irrigation point, and a drainage pipe for draining excess water. A solar photovoltaic energy storage system includes solar photovoltaic panels installed on the top of a plant oxygen chamber and an energy storage device electrically connected to the solar photovoltaic panels; The control system includes a terminal computer control system and CO2 monitoring devices, temperature monitoring devices, humidity monitoring devices, light monitoring devices, and water level monitoring meters, which are respectively connected to the terminal computer control system in communication.

[0009] By integrating four major functions, namely recycling air-conditioning condensate water for irrigation, recycling indoor CO2 for plant photosynthesis, delivering the fresh air produced by plants to the rooms of personnel, and using solar energy to power irrigation, it breaks through the limitations of the independent operation of each subsystem and the one-way flow of resources in the existing technology, forms an internal circulation and reuse system of "water resources - plant growth - air purification - energy supply", and significantly improves the comprehensive resource utilization efficiency of green buildings. By setting up a terminal computer control system and multiple types of sensors, it provides hardware support for subsequent intelligent scheduling, multi-mode switching, and predictive control, and solves the problem of the lack of linkage control between the green plant area and building equipment in the existing technology.

[0010] Further, the soil layer sequentially includes a soil layer, a ceramsite layer, a root barrier and puncture-proof layer, a water storage and drainage layer, a waterproof layer, and a floor slab from top to bottom; A civil engineering air duct is buried in the soil layer, the first fresh air pipe is lined in the civil engineering air duct, and a waterproof mortar layer is provided on the outer side of the first fresh air pipe; The water storage and drainage layer is provided with permeable holes and a conical water storage tank. The conical water storage tank is used to store part of the infiltrated water, and the permeable holes are used to guide the excess infiltrated water to a drain vertical pipe for discharge.

[0011] The soil layer pre-cools and pre-heats the fresh air in the civil engineering air duct, reducing the air-conditioning energy consumption; the ceramsite layer prevents the loss of sand and promotes infiltration; the root barrier and puncture-proof layer prevents the roots from damaging the waterproof layer and the floor slab; the permeable holes and the conical water storage tank of the water storage and drainage layer achieve the dual functions of discharging excess water and storing part of the water; the waterproof layer prevents leakage. This multi-layer structure solves the problems in the existing technology that the soil structure in the green plant area is single and cannot balance the requirements of temperature regulation and waterproofing. At the same time, the fresh air pipe lined with waterproof mortar avoids the erosion of irrigation water and prolongs the service life of the equipment.

[0012] Further, the second air suction port corresponding to the second fresh air pipe and the third air discharge port corresponding to the first air discharge pipe are arranged diagonally in the plant oxygen chamber.

[0013] By arranging the air supply port and the air discharge port in the plant oxygen chamber at the diagonal positions, it ensures that the fresh air sent into the chamber fully flows through the plant area before being discharged, avoiding the "airflow short-circuit" phenomenon caused by the direct suction of the air supply by the air discharge port, and improving the air circulation efficiency and the effect of plant photosynthesis.

[0014] Further, the plant oxygen chamber is set as a structure that leans against the building exterior wall and protrudes outward. The solar photovoltaic panel is arranged on the top of the protruding structure, and the electric energy storage device is arranged at a hidden position on the side of the plant area inside the plant oxygen chamber, and the protection grade of the shell of the electric energy storage device is not lower than IP55.

[0015] Photovoltaic panels are installed on the top of the protruding structure without occupying additional building land; the energy storage equipment is hidden inside the plant area, taking into account both aesthetics and protection; the IP55 protection rating ensures that the energy storage equipment operates safely in the humid green environment, solving the problem of independent setting of photovoltaic and green areas and low space utilization in existing technologies.

[0016] This application also includes a control method for a resource-recycling plant oxygen chamber system, comprising the following steps: The CO2 concentration inside the plant oxygen chamber is collected in real time by CO2 monitoring devices at multiple detection points. Temperature, humidity, light intensity, and water level are collected in the chamber by temperature monitoring devices, humidity monitoring devices, light intensity monitoring devices, and water level monitoring devices, respectively. When the carbon dioxide concentration values ​​at at least three detection points are lower than the first preset threshold, switch to the cabin air supply mode, close the first fresh air duct, open the second fresh air duct to deliver the cabin air to the personnel room, and at the same time open the first exhaust duct and close the second exhaust duct to exhaust the air from the personnel room into the plant oxygen chamber. When the carbon dioxide concentration values ​​at at least three detection points exceed the second preset threshold but are lower than the third preset threshold, switch to outdoor fresh air mode, open the first fresh air duct, close the second fresh air duct, and deliver outdoor fresh air to the personnel's room after pre-cooling or preheating the soil. When the carbon dioxide concentration values ​​at at least three detection points exceed the third preset threshold, switch to direct exhaust mode, open the second exhaust duct, close the first exhaust duct, and exhaust the air in the personnel room directly to the outside. When the collected cabin temperature value exceeds the preset temperature threshold and the cabin humidity value is lower than the preset humidity threshold, irrigation is started, and condensate water or municipal water source is selected for irrigation according to the water level in the storage tank. When the outdoor light intensity reaches the photovoltaic power generation threshold, electricity is generated through solar photovoltaic panels and stored in an energy storage device to provide power for irrigation.

[0017] By setting three CO2 thresholds (700 ppm, 1000 ppm) and intelligently switching between three air supply and exhaust modes, the system ensures the quality of fresh air in the personnel rooms while prioritizing the use of oxygen-rich fresh air within the chamber (reducing energy consumption for air conditioning fresh air handling). Simultaneously, it selectively delivers CO2-rich air from the personnel rooms into the plant oxygen chamber to support photosynthesis, solving the problems of direct CO2 emission waste and the limited purification benefits of green plants in the previous technology. Through temperature and humidity linkage control (initiating irrigation when temperature exceeds the standard and humidity is too low), water waste caused by timed and quantitative irrigation is avoided. At the same time, passive regulation of temperature and humidity within the chamber is achieved through plant transpiration, reducing the energy consumption of the air conditioning system for dehumidification or humidification. Photovoltaic power generation and energy storage are triggered by light intensity detection, prioritizing power supply to the irrigation system and reducing dependence on municipal power, solving the problems of high energy consumption in green areas and lack of synergy with renewable energy in the previous technology.

[0018] Furthermore, the following predictive control steps are also included: Collect and store historical operating data, including historical data on carbon dioxide concentration, temperature, humidity, water storage, and irrigation time. Get future weather forecast information; Based on future weather forecasts and historical operational data, predict the control strategy for the next day. The control strategy for the next day includes the fresh air mode switching time period, the irrigation time period, and the power release time period of the energy storage device. The predictive control strategy is implemented the following day, and the predictive control strategy is dynamically adjusted by real-time monitoring data.

[0019] By collecting historical operational data and obtaining weather forecasts, the system can predict the next day's fresh air mode switching times, irrigation periods, and energy storage release periods, upgrading the system from "passive response" to "active prediction" and further reducing energy consumption. For example, if a high-temperature weather forecast is made for the next day, condensate can be stored in advance for irrigation and cooling; if a peak period for personnel is predicted for the next day, the system can switch to in-cabin air supply mode in advance. By dynamically adjusting the prediction strategy through real-time monitoring data and incorporating the adjustment results into the historical database, the system possesses self-learning capabilities. The control strategy is continuously optimized over time, solving the problem of fixed control strategies in existing technologies that cannot adapt to dynamic changes.

[0020] Furthermore, the predicted next-day control strategy also includes: When the weather forecast predicts that the next day will be cloudy, the control system will charge the energy storage device during off-peak hours at night to supply power to the circulating water pump the following day.

[0021] When insufficient sunlight is predicted for the next day, the energy storage equipment can be charged in advance using off-peak electricity prices at night. This not only ensures the power supply needs for irrigation the next day, but also reduces operating costs by taking advantage of the price difference, while alleviating the pressure on the power grid during the day.

[0022] Furthermore, the CO2 monitoring device is installed at five detection points in the middle of the four inner walls of the plant oxygen chamber and the center point inside the chamber, with each detection point being 1.5 meters above the ground; The first preset threshold is 700 ppm, the second preset threshold is 700 ppm, and the third preset threshold is 1000 ppm; The criteria for determining at least three detection points are: the carbon dioxide concentration values ​​of three or more of the five detection points meet the corresponding threshold conditions.

[0023] Five detection points cover the breathing height plane of the occupants, avoiding misjudgments caused by local airflow disturbances in single-point detection. A majority decision logic of "three or more" effectively avoids control malfunctions caused by occasional sensor failures or local anomalies, ensuring the accuracy and stability of mode switching. A fresh air switching threshold of 700 ppm meets the lower limit of the comfortable CO2 concentration range in indoor air quality standards, while a direct exhaust threshold of 1000 ppm meets the upper limit, protecting occupants' health while maximizing the use of air resources within the cabin.

[0024] Furthermore, the step of selecting condensate or municipal water for irrigation based on the water level in the storage tank specifically includes: When the water level monitor detects that the water level in the storage tank is higher than the preset minimum water level, the condensate in the storage tank is used for irrigation. When the water level in the storage tank is lower than the preset minimum water level, the system will switch to municipal water for irrigation. When the water level monitor detects that the water level in the storage tank is higher than the preset maximum water level, the first electric water valve on the drain pipe is opened to discharge excess condensate.

[0025] Prioritizing the use of air conditioner condensate for irrigation solves the water waste problem caused by the direct discharge of air conditioner condensate in the background technology; automatically switching to municipal water source when the water tank is low to ensure continuous irrigation; automatically draining water when the water level exceeds the limit to prevent overflow and ensure safe system operation.

[0026] Furthermore, after irrigation is started, the temperature inside the chamber is reduced and the humidity is increased through plant transpiration. The control system dynamically adjusts the irrigation duration and amount based on the feedback values ​​from the temperature and humidity monitoring devices.

[0027] After irrigation is started, the temperature and humidity inside the chamber are passively regulated by the transpiration of the plants. The control system dynamically adjusts the irrigation time and water volume based on the temperature and humidity monitoring feedback to avoid over-irrigation or under-irrigation, forming a closed-loop control of "detection-irrigation-feedback-adjustment", which further improves the water-saving effect and the accuracy of temperature and humidity regulation.

[0028] Compared with existing technologies, the advantages of this invention are: 1. This application achieves efficient recovery and intelligent irrigation of air conditioning condensate, conserving water resources. It collects condensate from the air conditioning system into a storage tank buried in the soil layer of the plant oxygen chamber via a condensate recovery pipe. Combined with the linkage control of a water level monitor and an electric water valve, the condensate is prioritized for plant irrigation, switching to municipal water only when the storage tank is empty. This design effectively solves the water waste problem caused by the direct discharge of air conditioning condensate in existing technologies. Furthermore, the condensate has a low temperature and pure water quality, which is beneficial for plant growth. Irrigation is achieved through a solar-powered circulating water pump, further reducing municipal water and electricity consumption. 2. Achieving bidirectional recycling of indoor carbon dioxide and plant oxygen to improve air quality: This application achieves intelligent switching of air circulation modes by setting up two sets of fresh air ducts and two sets of exhaust air ducts, combined with the linkage control of multi-point CO2 monitoring devices and electric air valves. When the CO2 concentration in the chamber is low, the oxygen-rich fresh air in the chamber is directly delivered to the rooms where people use it, reducing the burden on the air conditioning system for processing fresh air; when the CO2 concentration in the chamber is high, outdoor fresh air is introduced into the chamber or exhausted to the outside; at the same time, the CO2-rich air in the rooms is selectively exhausted into the plant oxygen chamber, providing a carbon source for plant photosynthesis. This design breaks through the technical limitations of traditional air conditioning systems where CO2 is directly discharged outdoors and the purification effect of green plants is limited to a local area, achieving an overall improvement in indoor air quality and internal recycling of resources. 3. Utilizing a solar photovoltaic system to power the equipment inside the chamber, reducing building energy consumption; This application designs the plant oxygen chamber as a protruding structure against the exterior wall, utilizing the space at the top of the protrusion to install solar photovoltaic panels, and installing energy storage equipment to power the circulating water pump and other electrical equipment inside the chamber. This design integrates renewable energy with the green area, not only reducing the plant oxygen chamber's dependence on mains power, but also achieving peak shaving and valley filling of electricity through energy storage equipment, further reducing the overall building operating energy consumption; 4. Utilizing the soil's temperature regulation properties to achieve fresh air pretreatment and reduce air conditioning system energy consumption; This application buries part of the fresh air duct in the soil layer of the plant oxygen chamber, utilizing the soil's natural heat storage and temperature regulation characteristics to pre-cool the introduced outdoor fresh air in summer and preheat it in winter; This design makes full use of the physical properties of the existing soil structure in the plant oxygen chamber, eliminating the need for additional buried pipe heat exchangers, which reduces the energy consumption of the air conditioning system for fresh air treatment and avoids the additional civil engineering costs and space occupation caused by the independent setting of traditional soil heat exchange systems; 5. Multi-system collaborative operation forms a closed loop for resource reuse, enhancing the overall performance of green buildings; This application integrates four major functions—water resource recycling, air circulation, solar power supply, and soil temperature regulation—into the plant oxygen chamber system, and achieves collaborative linkage between subsystems through CO2 monitoring and control logic. Compared with the traditional technology where each subsystem operates independently and is unrelated, this application forms a closed loop for resource reuse: "condensate → plant irrigation → plant growth → oxygen supply → CO2 recovery → condensate generation." The subsystems support and depend on each other, resulting in significant synergistic effects. Simultaneously, the integrated design of the soil layering structure within the plant oxygen chamber (soil layer, expanded clay layer, root-barrier and anti-penetration layer, water storage and drainage layer, waterproof layer) with the fresh air duct, water storage tank, and drainage system ensures structural safety, reliable waterproofing, and smooth drainage, balancing functionality and engineering feasibility. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a plant oxygen chamber system for resource reuse.

[0030] Figure 2 This is a schematic diagram of the arrangement of the fresh air duct and exhaust air duct on the plant oxygen chamber side of this application.

[0031] Figure 3 This is a schematic diagram of two layout methods and switching structure of the fresh air duct in this application.

[0032] Figure 4 This is a schematic diagram of the plant irrigation and drainage system structure of this application.

[0033] Figure 5 This is a schematic diagram of the control structure for switching between the water storage tank and the municipal water source in this application.

[0034] Figure 6 This is a schematic diagram of the soil stratification structure in this application.

[0035] Figure 7 This is the flowchart for the fresh air mode switching control in this application.

[0036] Figure 8 This is the flowchart for the exhaust mode switching control of this application.

[0037] Figure 9 This is a flowchart of the irrigation water supply switching control for this application.

[0038] Attached reference numerals: 1-Plant oxygen chamber, 2-First exhaust duct, 3-First fresh air duct, 4-Air conditioning equipment, 5-Second fresh air duct, 6-Second exhaust duct, 7-Personnel room, 8-Air supply outlet, 9-First exhaust outlet, 10-Solar photovoltaic panel, 11-Electric energy storage device, 14-First air intake, 15-Second air intake, 16-First electric fresh air valve, 17-Second electric fresh air valve, 18-Condensate recovery pipe, 19-Drainage pipe, 20-Water storage tank, 21-CO2 monitoring device, 22- 23-Second exhaust vent, 24-First electric exhaust valve, 25-Second electric exhaust valve, 26-Third exhaust vent, 27-Civil engineering ventilation duct, 28-Circulating water pump, 29-First electric water valve, 30-Irrigation water supply pipe, 31-Sprinkler head, 32-Second electric water valve, 33-Water level monitor, 34-Municipal water pipe, 35-Soil layer, 36-Ceramic granule layer, 37-Root barrier and puncture prevention layer, 38-Waterproof layer, 39-Floor slab, 40-Drainage riser, 41-Third electric water valve. Detailed Implementation

[0039] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0040] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0041] Please see Figure 1-9 A plant oxygen chamber system for resource recycling utilizes condensate from the air conditioning system to irrigate greenery, achieving water resource reuse. It uses solar power to drive related equipment within the chamber, and leverages the soil temperature regulation within the chamber to pre-cool and pre-heat the fresh air from the air conditioning system to reduce energy consumption. Combined with an air quality monitoring device in the green area, the purified air is delivered to the office area via ductwork to improve the accessibility of the greenery. The core technology and method utilize control logic to switch between different systems, forming a complete plant oxygen chamber technology for resource recycling. Figure 1 As shown, it specifically includes: a plant oxygen chamber 1, an air conditioning unit 4, and personnel rooms.

[0042] The plant oxygen chamber 1 mainly generates oxygen through plants. It uses air conditioning equipment 4, first fresh air duct 3, second fresh air duct 5 and air outlet 8 to deliver fresh air from the chamber to the personnel room 7. It also uses air conditioning equipment 4, first exhaust duct 2, second exhaust duct 6 and first exhaust outlet 9 to exhaust CO2 from the personnel room 7 into the plant oxygen chamber 1 to supply the plants for photosynthesis and oxygen production, thus forming an air recycling system.

[0043] like Figure 2 and Figure 3 As shown, the first fresh air duct 3 of the air conditioning system located on the side of the plant oxygen chamber 1 has two arrangement methods. One method is that the first fresh air duct 3 is set in the civil engineering air duct 26 buried in the soil layer, and the first fresh air duct 3 is connected to the first air intake 14 on the outer wall side of the plant oxygen chamber 1. This arrangement of the first fresh air duct 3 can utilize the temperature regulation effect of the soil to facilitate the pre-cooling of fresh air in summer and the pre-heating of fresh air in winter, which can save some energy consumption of the air conditioning system.

[0044] Another option is to directly install the first fresh air duct 3 inside the plant oxygen chamber 1. In this arrangement, when the CO2 monitoring device 21 detects a low CO2 content inside the chamber, it directly draws fresh air from the chamber through the second air intake 15 and delivers it to the personnel room 7.

[0045] The switching between the two fresh air modes is mainly achieved through CO2 monitoring devices 21 installed on the interior walls of the cabin, which detect CO2 content and switch between modes via a first electric fresh air valve 16 and a second electric fresh air valve 17. The CO2 monitoring devices 21 are located at five positions, one in the middle of the four interior walls and the center of the cabin, each 1.5m above the ground for easy detection of CO2 concentration at that height. When three or more CO2 monitoring devices 21 detect a CO2 content exceeding 700ppm, the first electric fresh air valve 16 opens and the second electric fresh air valve 17 closes, directly drawing fresh air from the outside and supplying it to the personnel room 7. When three or more CO2 monitoring devices 21 detect a CO2 content below 700ppm, the second electric fresh air valve 17 opens and the first electric fresh air valve 16 closes, directly drawing in fresh air at a suitable temperature from the cabin and supplying it to the personnel room 7, reducing the air handling burden on the air conditioning equipment 4.

[0046] The air conditioning system's first exhaust duct 2, located on the side of the plant oxygen chamber 1, has two arrangement methods. In one method, the end of the first exhaust duct 2 is located at the bottom of the chamber, and polluted air from the personnel room 7 can be sent to the plant oxygen chamber 1 through the third exhaust vent 25 to provide CO2 for the photosynthesis of the plants. In the other method, the end of the first exhaust duct 2 is connected to the second exhaust vent 22 on the outer wall of the plant oxygen chamber 1, directly exhausting polluted air to the outside. The switching between the two exhaust modes is primarily achieved through CO2 content detection by CO2 monitoring devices 21 installed on the inner wall, and switching between them via a first electric exhaust valve 23 and a second electric exhaust valve 24. When three or more CO2 monitoring devices 21 detect a CO2 content exceeding 1000 ppm, the first electric exhaust valve 23 opens and the second electric exhaust valve 24 closes, directly exhausting polluted air to the outside. When three or more CO2 monitoring devices 21 detect a CO2 content below 1000 ppm, the second electric exhaust valve 24 opens and the first electric exhaust valve 23 closes, directly exhausting polluted air into the cabin to facilitate photosynthesis by plants and ensure a favorable environment for personnel inside. The second fresh air intake 15 and the third exhaust 25 are arranged diagonally to avoid directly drawing exhaust air into the intake vents and causing airflow short-circuiting.

[0047] Depend on Figure 4 It is known that a water storage tank 20 and a circulating water pump 27 are buried in the soil layer inside the plant oxygen chamber 1. The condensate recovery pipe 18 of the air conditioning system is connected to the water storage tank 20 buried in the soil layer. An irrigation water supply pipe 29 and a drainage pipe 19 are installed at the bottom of the water storage tank 20. The irrigation water supply pipe 29 is connected to the circulating water pump 27 to facilitate the use of the air conditioning condensate recovered in the water storage tank 20 to irrigate the green plants through the spray head 30, effectively recovering and utilizing the air conditioning condensate.

[0048] Depend on Figure 5 It is known that a water level monitoring gauge 32 is installed inside the water storage tank 20. If the amount of recovered air conditioning condensate exceeds the maximum water level line of the water storage tank, the first electric water valve 28 is opened electrically to discharge the excess air conditioning condensate through the drain pipe 19 to ensure the normal operation of the air conditioning condensate system. When the water storage tank 20 contains air conditioning condensate and it is necessary to water the plants, the second electric water valve 31 is opened and the third electric water valve 41 is closed; when there is no water in the water storage tank 20, the second electric water valve 31 is closed and the third electric water valve 41 is opened to draw water directly from the indoor municipal water pipe 33 for watering.

[0049] Depend on Figure 2 and Figure 5It is known that the plant oxygen chamber 1 is designed to be against the outer wall and protruding. The top space of the protruding part is used to install solar photovoltaic panels 10. An electric energy storage device 11 is installed in a convenient hiding place inside the plant area of ​​the chamber. The outer shell of the electric energy storage device 11 has a protection level of not less than IP55. The solar photovoltaic panels 10 convert solar energy into electrical energy, which is stored by the electric energy storage device 11. The electric energy storage device 11 can power the circulating water pump. When the electric energy storage device has sufficient power, it can power other electrical facilities in the chamber to achieve energy saving effect.

[0050] Depend on Figure 6 It is known that the soil structure mainly includes a soil layer 34, a civil engineering ventilation duct 26, a ceramsite layer 35, a root-blocking and puncture-proof layer 36, a water-retaining and drainage layer 37, a waterproof layer 38, a floor slab 39, and a drainage riser 40. The soil layer 34 is mainly used for plant cultivation. A civil engineering ventilation duct 26 is installed at the location where the first fresh air duct 3 needs to be buried within the soil layer 34, with the first fresh air duct 3 lined within the civil engineering ventilation duct 26. The soil layer 34 can regulate the temperature of the civil engineering ventilation duct 26, facilitating pre-cooling or pre-heating of fresh air and reducing the energy consumption of the air conditioning system for fresh air handling. The first fresh air duct 3, lined within the civil engineering ventilation duct 26 and with waterproof mortar on the outside, prevents irrigation water from directly eroding the air conditioning duct. The ceramsite layer 35, placed below the soil layer 34, prevents soil erosion and allows excess irrigation water to seep downwards. The root-blocking and puncture-proof layer 36 mainly prevents plant roots from damaging the waterproof layer 38 and the floor slab 39. The water storage and drainage layer 37 is equipped with permeable holes and a conical water storage trough. When excess irrigation water seeps into the water storage and drainage layer 37, the permeable holes can guide the excess water to the bottom of the water storage and drainage layer 37 and discharge it through the drainage riser 40, while the conical water storage trough can store some water for reuse by the plants. The waterproof layer 38 is set between the water storage and drainage layer 37 and the floor slab 39 to prevent irrigation water from seeping into the lower layer.

[0051] This application also includes a control method for a resource-recycling plant oxygen chamber system, such as... Figure 7 , Figure 8 and Figure 9 As shown, this includes intelligent scheduling algorithms.

[0052] The intelligent scheduling algorithm achieves coordinated and optimized operation of multiple systems such as air conditioning, irrigation, fresh air, and solar energy through CO2 monitoring device 21, cabin temperature monitoring device, cabin humidity monitoring device, solar light monitoring device, water level monitoring meter 32, and terminal computer control system.

[0053] Specifically, the CO2 content inside the cabin is monitored in real time by five CO2 monitoring devices 21 located at the center of the four inner walls and the center point of the cabin. The monitoring data is fed back to the terminal computer control system. If the terminal computer control system analyzes that the CO2 content in the cabin is below 700ppm at three or more locations, the terminal computer control system issues an instruction to open the second electric fresh air valve 17 and close the first electric fresh air valve 16, directly drawing in fresh air at a suitable temperature from the cabin and sending it into the indoor room. At the same time, the second electric exhaust valve 24 is opened and the first electric exhaust valve 23 is closed, directly exhausting the polluted air into the cabin to facilitate photosynthesis of the plants. This is the cabin air supply and exhaust mode. During this process, the CO2 concentration in the cabin gradually increases until the terminal computer control system analyzes that the CO2 content collected by three or more CO2 monitoring devices 21 exceeds 700ppm but is less than 1000ppm. At this time, the first electric fresh air valve 16 is opened and the second electric fresh air valve 17 is closed, switching to the mode of directly drawing in fresh air from the outside. When the terminal computer control system analyzes that the CO2 content collected by three or more CO2 monitoring devices 21 exceeds 1000ppm, it opens the first electric exhaust valve 23 and closes the second electric exhaust valve 24, switching to the mode of directly exhausting polluted air to the outside. Only when the CO2 content collected by three or more CO2 monitoring devices 21 is lower than 700ppm will it switch back to the cabin ventilation mode.

[0054] While monitoring the CO2 content inside the chamber in real time, the chamber temperature monitoring device, chamber humidity monitoring device, water level gauge 32, and solar light monitoring device also collect data on the chamber temperature and humidity, water tank storage, and outdoor sunlight, and upload them synchronously to the terminal computer control system. If the terminal computer control system analyzes that the chamber temperature exceeds the temperature required for plant growth and the humidity is too low, the terminal computer control system issues a command to turn on the circulating water pump 27 to draw air conditioning condensate from the water tank 20 for irrigation; when the water level gauge 32 detects that the water level in the water tank 20 is insufficient, the terminal computer control system issues a command to close the second electric water valve 31 and open the third electric water valve 41 to draw water directly from the indoor municipal water pipe 33 for irrigation. After irrigation, the plants lower the chamber temperature and increase the chamber humidity through plant transpiration. Meanwhile, if the solar irradiance monitoring device detects that the outdoor irradiance meets the requirements for photovoltaic power generation, the solar photovoltaic panel 10 converts solar energy into electrical energy, which is stored by the energy storage device 11 and supplied to the circulating water pump 27; if the outdoor irradiance is insufficient for photovoltaic power generation, the stored power data of the energy storage device 11 is used to determine whether the power is supplied by the surplus power of the energy storage device 11 or by the indoor municipal power supply, and a power supply strategy instruction is issued.

[0055] The real-time dynamic control data is collected and stored in the terminal computer control system. This system also collects future weather forecasts from the internet and combines them with historical data on CO2 content, temperature, humidity, and water storage to analyze the control strategy for the following day. If the forecast predicts a cloudy day, off-peak electricity is used to charge the energy storage device 11 in advance, facilitating power supply to the circulating water pump 27 and reducing energy consumption. Based on historical irrigation time data, historical CO2 content time period data, and water storage data, air conditioning condensate is collected and stored in advance. Predictive strategies are developed for the time periods of fresh air intake from inside the cabin, fresh air intake from outside, irrigation, and the release of electricity from the energy storage device 11. Real-time dynamic monitoring is then used to dynamically adjust the predicted fresh air switching mode, irrigation timing, and energy storage release strategy.

[0056] The embodiments described above merely illustrate specific implementation methods of this application, and while the descriptions are detailed and specific, they should not be construed as limiting the scope of protection of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the technical solution of this application, and these modifications and improvements all fall within the scope of protection of this application.

Claims

1. A plant oxygen chamber system for resource recycling, characterized in that, include: The plant oxygen chamber (1) is a closed space with a soil layer for planting plants and a CO2 monitoring device (21) for detecting carbon dioxide concentration. The air conditioning supply and exhaust system includes a first fresh air duct (3), a second fresh air duct (5), a first exhaust duct (2), and a second exhaust duct (6) installed on the side of the plant oxygen chamber (1), and an air supply outlet (8) and a first exhaust outlet (9) installed on the side of the personnel room (7). The first fresh air duct (3) is buried in the soil layer and is used to introduce outdoor fresh air and use the soil temperature for pre-cooling or preheating; the second fresh air duct (5) is set inside the plant oxygen chamber (1) and is used to introduce air into the chamber. The first exhaust duct (2) is connected to the interior of the plant oxygen chamber (1) to transport the air from the personnel room (7) into the chamber; the second exhaust duct (6) is connected to the outside to discharge the air directly to the outside. The plant irrigation and drainage system includes a condensate recovery pipe (18) connected to the air conditioner condensate outlet, a water storage tank (20) buried in the soil layer, an irrigation water supply pipe (29) connecting the water storage tank (20) and the plant irrigation point, and a drainage pipe (19) for draining excess water. The solar photovoltaic storage system includes a solar photovoltaic panel (10) installed on the top of the plant oxygen chamber (1) and an electric energy storage device (11) electrically connected to the solar photovoltaic panel (10). The control system includes a terminal computer control system and a CO2 monitoring device (21), a temperature monitoring device, a humidity monitoring device, a light monitoring device, and a water level monitoring meter (32) that are respectively connected to the terminal computer control system.

2. The plant oxygen chamber system for resource reuse according to claim 1, characterized in that, The soil layer, from top to bottom, includes a soil layer (34), a ceramsite layer (35), a root-barrier and puncture-proof layer (36), a water-retaining and drainage layer (37), a waterproof layer (38), and a floor slab (39). A civil engineering ventilation duct (26) is buried in the soil layer (34), the first fresh air pipe (3) is lined in the civil engineering ventilation duct (26), and a waterproof mortar layer is provided on the outside of the first fresh air pipe (3); The water storage and drainage layer (37) is equipped with permeable holes and a conical water storage tank. The conical water storage tank is used to store some of the infiltrated water, and the permeable holes are used to guide the excess infiltrated water to the drainage riser (40) for discharge.

3. The plant oxygen chamber system for resource reuse according to claim 1, characterized in that, The second fresh air duct (5) and the second air intake (15) corresponding to the second fresh air duct (5) and the third air exhaust duct (25) corresponding to the first exhaust duct (2) are arranged diagonally in the plant oxygen chamber (1).

4. The plant oxygen chamber system for resource reuse according to claim 1, characterized in that, The plant oxygen chamber (1) is configured as a structure that protrudes outward from the building's exterior wall. The solar photovoltaic panel (10) is located on the top of the protruding structure. The electric energy storage device (11) is located in a hidden position on the side of the plant area inside the plant oxygen chamber (1). The outer shell protection level of the electric energy storage device (11) is not lower than IP55.

5. A control method for a plant oxygen chamber system for resource recycling, characterized in that, Controlling a plant oxygen chamber system for resource recycling as described in any one of claims 1-4 includes the following steps: The CO2 concentration value inside the plant oxygen chamber (1) is collected in real time by a CO2 monitoring device (21) with multiple detection points set inside the chamber, and the temperature value, humidity value, outdoor light intensity value, and water level value of the storage tank (20) are collected by a temperature monitoring device, a humidity monitoring device, a light monitoring device, and a water level monitor (32), respectively. When the carbon dioxide concentration values ​​at at least three detection points are lower than the first preset threshold, switch to the cabin air supply mode, close the first fresh air duct (3), open the second fresh air duct (5) to deliver the cabin air to the personnel room (7), open the first exhaust duct (2) at the same time, close the second exhaust duct (6) to exhaust the air in the personnel room (7) into the plant oxygen chamber (1); When the carbon dioxide concentration values ​​at at least three detection points exceed the second preset threshold and are lower than the third preset threshold, switch to outdoor fresh air mode, open the first fresh air duct (3), close the second fresh air duct (5), and deliver the outdoor fresh air to the personnel room (7) after pre-cooling or preheating the soil. When the carbon dioxide concentration values ​​at at least three detection points exceed the third preset threshold, switch to direct exhaust mode, open the second exhaust duct (6), close the first exhaust duct (2), and exhaust the air in the personnel room (7) directly to the outside. When the collected cabin temperature value exceeds the preset temperature threshold and the cabin humidity value is lower than the preset humidity threshold, irrigation is started, and condensate or municipal water source is selected for irrigation according to the water level value of the water tank (20); When the outdoor light intensity reaches the photovoltaic power generation threshold, the solar photovoltaic panel (10) generates electricity and stores it in the energy storage device (11), providing power for irrigation.

6. The control method for a resource recycling plant oxygen chamber system according to claim 5, characterized in that, It also includes the following predictive control steps: Collect and store historical operating data, including historical data on carbon dioxide concentration, temperature, humidity, water storage, and irrigation time. Get future weather forecast information; Based on future weather forecasts and historical operational data, predict the control strategy for the next day. The control strategy for the next day includes the fresh air mode switching time period, the irrigation time period, and the power release time period of the energy storage device (11). The predictive control strategy is implemented the following day, and the predictive control strategy is dynamically adjusted by real-time monitoring data.

7. The control method for a resource reuse plant oxygen chamber system according to claim 5, characterized in that, The predicted next-day control strategy also includes: When the weather forecast predicts that the next day will be cloudy, the control energy storage device (11) is charged during off-peak hours at night to supply power to the circulating water pump (27) the next day.

8. The control method for a resource-recycling plant oxygen chamber system according to claim 5, characterized in that, The CO2 monitoring device (21) is set at five detection points in the middle of the four inner walls of the plant oxygen chamber (1) and the center point inside the chamber. Each detection point is 1.5 meters above the ground. The first preset threshold is 700 ppm, the second preset threshold is 700 ppm, and the third preset threshold is 1000 ppm; The criteria for determining at least three detection points are: the carbon dioxide concentration values ​​of three or more of the five detection points meet the corresponding threshold conditions.

9. The control method for a resource recycling plant oxygen chamber system according to claim 5, characterized in that, The process of selecting condensate or municipal water for irrigation based on the water level in the water storage tank (20) specifically includes: When the water level monitor (32) detects that the water level in the water storage tank (20) is higher than the preset minimum water level, the condensate in the water storage tank (20) is used for irrigation. When the water level in the water storage tank (20) is lower than the preset minimum water level, the system switches to municipal water for irrigation. When the water level monitor (32) detects that the water level in the water storage tank (20) is higher than the preset maximum water level, the first electric water valve (28) on the drain pipe (19) is opened to discharge excess condensate.

10. The control method for a resource-recycling plant oxygen chamber system according to claim 5, characterized in that, After irrigation is started, the temperature inside the chamber is reduced and the humidity inside the chamber is increased through plant transpiration. The control system dynamically adjusts the irrigation duration and irrigation amount based on the feedback values ​​from the temperature monitoring device (42) and the humidity monitoring device (43).

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