Photovoltaic photo-thermal greenhouse and plant growth cycle control system

Abstract

The utility model relates to a photovoltaic photo-thermal greenhouse and plant growth cycle control system, which comprises a greenhouse and a temperature control system, an angle-adjustable photovoltaic photo-thermal plate is arranged above the greenhouse, a hollow wall body additionally provided with a phase change material is arranged inside the greenhouse, a sliding rail is arranged on the outer side of the greenhouse, the greenhouse is divided into a north greenhouse and a south greenhouse by the wall body, and the temperature control system is connected with the temperature control system. A first fan, a first baffle, a second baffle and a third baffle are arranged at the upper end of the wall body, a second fan, a fourth baffle, a fifth baffle and a sixth baffle are arranged at the lower end of the wall body, the first fan is located among the first baffle, the second baffle and the third baffle, and the second fan is located among the fourth baffle, the fifth baffle and the sixth baffle; a seventh baffle is arranged at the top end of the side, close to the south shed, of the wall. Glass is arranged at the middle end of the side, close to the south shed, of the wall body, the glass and the wall body form a TLambert wall, an upper ventilation opening is formed in the upper end of the TLambert wall, and a lower ventilation opening is formed in the lower end.

Description

Technical Field

[0001] This utility model relates to a photovoltaic and solar thermal greenhouse and a plant growth cycle control system, belonging to the field of greenhouse temperature control technology. Background Technology

[0002] When plants are in a dormant period, their growth and metabolic activities slow down significantly. By artificially controlling the environment, plant dormancy can be promoted, and the length of dormancy can be controlled to adjust the plant's growth cycle.

[0003] The primary goal of environmental control during cherry dormancy is temperature, specifically maintaining it within the range of 0–7.2℃ for 35–40 days to meet the accumulated chilling requirements. After fumigation, the temperature inside the greenhouse should be controlled between 0–7.2℃, and the soil must not freeze.

[0004] After the cherry tree's dormancy period, the temperature rises. On the first day, the daytime temperature needs to be raised to 15-17℃, and then gradually increased by one degree Celsius each day until the daytime temperature reaches 20-28℃ (depending on the size of the greenhouse), with a nighttime temperature of 5-7℃. The temperature requirements during the subsequent flowering and fruit expansion stages also need to be maintained within a certain range. (The following example uses dormancy control, but it applies to all stages.)

[0005] Existing greenhouse technologies lack sufficient heating and cooling capacity, failing to meet the temperature requirements of cherries during winter dormancy. They generate excessive heat during the day but are cold at night, resulting in a large diurnal temperature range. Therefore, it is crucial to develop a photovoltaic thermal greenhouse and plant growth cycle control system that utilizes solar energy for winter heating and cooling. Utility Model Content

[0006] This invention addresses the shortcomings of the existing technology by providing a photovoltaic and solar thermal greenhouse and a plant growth cycle control system.

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0008] A photovoltaic and solar thermal greenhouse and a plant growth cycle control system include a greenhouse and a temperature control system. The greenhouse has adjustable-angle photovoltaic and solar thermal panels on its upper surface, a hollow wall with phase change material inside, and sliding rails on its outer surface. The wall divides the greenhouse into a north section and a south section. The upper part of the wall has a first fan, a first baffle, a second baffle, and a third baffle, and the lower part has a second fan, a fourth baffle, a fifth baffle, and a sixth baffle. The first fan is located between the first, second, and third baffles. The second fan… The machine is located between baffles No. 4, No. 5, and No. 6; baffle No. 7 is provided at the top of the wall near the south shed; glass is provided in the middle of the wall near the south shed, and the glass and the wall form a Trumbol wall, with an upper ventilation opening at the top and a lower ventilation opening at the bottom; two sets of sliding rail carriages are provided on the slide rail, one set located on the upper slide rail carriage with the upper end connected to the photovoltaic thermal panel and a multi-functional rotating shaft at the bottom, and the other set located on the lower slide rail carriage with a multi-functional rotating shaft; a radiator connected to the temperature control system is provided inside the south shed.

[0009] Furthermore, the temperature control system includes an air source water heater installed inside the north shed. The air source water heater is connected to an underground cold water tank and an underground hot water tank. The underground cold water tank is connected to a radiator and a cooling tower located on the outside of the north shed above ground. Both the cooling tower and the underground hot water tank are connected to underground water pipes. The underground hot water tank is connected to the radiator.

[0010] Furthermore, the slide rail vehicle is connected to the photovoltaic thermal panel via a vertical support, and the outer frame of the photovoltaic thermal panel is slidably connected to the vertical support.

[0011] Furthermore, a flat plate solar collector is installed on the outer side of the south shed, and a third fan is installed on the flat plate solar collector. The third fan is used to transport heat energy to the pebbles laid on both sides of the south shed.

[0012] Furthermore, the slide rail carriage is equipped with friction plates, grooves, and couplings. The friction plates are located between the slide rail carriage and the slide rail. The grooves are used to connect the four corners of the photovoltaic thermal plate. The couplings are connected to the multi-functional rotating shaft.

[0013] Furthermore, the multifunctional shaft includes a main shaft connected to a coupling and stiff bristles, a hot water pipe, a snowplow, and hooks arranged symmetrically in a cross shape along the outer side in a radial pattern.

[0014] Furthermore, an insulation blanket is installed above the greenhouse, and the insulation blanket is connected to hooks.

[0015] Furthermore, the greenhouse frame is equipped with a greenhouse film.

[0016] Furthermore, a laser rangefinder is installed below the photovoltaic thermal panel.

[0017] Compared with existing technologies, the beneficial effects of this invention are as follows: This invention uses phase change material in the wall to coordinate day and night temperatures. Waste heat from the photovoltaic thermal panels on the roof enters the phase change heat storage channel. During the day, the high temperature of the exhaust gas causes the phase change material to become liquid and store heat, effectively utilizing the heat from the photovoltaic thermal panels for nighttime insulation. This effectively regulates the imbalance of day and night temperatures. The glass and the wall form a Trombone wall, and sunlight during the day is used to heat the interlayer. The interlayer also contains phase change material, which can store excess heat during the day. The use of an air source water heater reduces space waste, and the north shed is used to buffer the impact of atmospheric temperature on greenhouse crops. The air source water heater can be used to cool the greenhouse air and heat the water. This invention solves the problem of greenhouse heating and cooling capacity, meeting the ground or air temperature requirements for cherry hibernation, and coordinates day and night temperatures through the phase change material in the wall. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the greenhouse of this utility model.

[0019] Figure 2 This is a schematic diagram of the slide rail vehicle structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the multifunctional rotating shaft of this utility model.

[0021] Figure 4 This is a cross-sectional view of the slide rail of this utility model.

[0022] Figure 5 This is a schematic diagram of the structure of baffles No. 1, No. 2, No. 3, No. 4, No. 5, No. 6 and No. 7 of this utility model.

[0023] Figure 6 This is a schematic diagram of the wall structure of this utility model.

[0024] In the diagram, 1. Baffle No. 1; 2. Baffle No. 2; 3. Baffle No. 3; 4. Baffle No. 4; 5. Baffle No. 5; 6. Baffle No. 6; 7. First fan; 8. Second fan; 9. Baffle No. 7; 10. Air source heat pump water heater; 11. Cooling tower; 12. Underground cold water tank; 13. Underground hot water tank; 14. Radiator; 15. Phase change material; 16. Wall; 17. Glass; 18. Slide rail; 19. Vertical support; 20. Photovoltaic thermal panel; 21. Insulation blanket; 22. Underground water pipe; 23. Flat plate collector; 24. Third fan; 25. Pebbles; 26. Greenhouse film; 27. Stiff bristles; 28. Hot water pipe; 29. ​​Snowplow; 30. Hook; 31. Main shaft; 32. Slide rail cart; 33. Groove; 34. Coupling; 35. Friction plate; 36. Laser rangefinder. Detailed Implementation

[0025] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0026] like Figures 1-6 As shown, a photovoltaic thermal greenhouse and plant growth cycle control system include a greenhouse and a temperature control system. The greenhouse has adjustable photovoltaic thermal panels 20 on top, a hollow wall 16 with phase change material 15 inside, and a sliding rail 18 on the outside. The wall 16 divides the greenhouse into a north section and a south section. The upper part of the wall 16 has a first fan 7, a first baffle 1, a second baffle 2, and a third baffle 3, and the lower part has a second fan 8, a fourth baffle 4, a fifth baffle 5, and a sixth baffle 6. The first fan 7 is located between the first baffle 1, the second baffle 2, and the third baffle 3. The second fan 7... Machine 8 is located between baffles 4, 5, and 6; baffle 9 is located at the top of the wall 16 near the south shed; glass 17 is located in the middle of the wall 16 near the south shed, and glass 17 and wall 16 form a Trumbo wall, with an upper ventilation opening at the top and a lower ventilation opening at the bottom; two sets of sliding rail carriages 32 are provided on the slide rail 18, one set of upper slide rail carriages 32 with a photovoltaic thermal plate 20 at the top and a multi-functional rotating shaft at the bottom, and the other set of lower slide rail carriages 32 with a multi-functional rotating shaft; radiators 14 connected to the temperature control system are provided inside the south shed.

[0027] The wall 16 has a phase change energy storage thickness of approximately 3.5 meters, an outer insulation layer thickness of 1.5 meters, a phase change heat storage channel thickness of 1 meter, and an inner heat storage layer thickness of 1 meter. The waste heat from the photovoltaic thermal panel 20 on the roof will enter the phase change heat storage channel. During the day, the high temperature of the waste gas will cause the phase change material 15 to turn into a liquid to store heat, effectively utilizing the heat from the photovoltaic thermal panel 20 for nighttime insulation, and effectively regulating the imbalance of heat between day and night.

[0028] Glass 17 and wall 16 form a Trumbo wall. Sunlight during the day is used to heat the interlayer. There is also a phase change material 15 in the interlayer, which can store excess heat during the day.

[0029] The slide rail 18 is thick at both ends and thin in the middle. Two sets of slide rail carriages 32 travel together. The upper and lower slide rail carriages 32 can travel together and can also provide more upward and downward force. The upper slide rail carriage 32 is connected to the photovoltaic thermal plate 20, and the lower slide rail carriage 32 is connected to the multi-functional rotating shaft.

[0030] The temperature control system includes an air-source heat pump water heater 10 installed inside the north shed. The air-source heat pump water heater 10 is connected to an underground cold water tank 12 and an underground hot water tank 13. The underground cold water tank 12 is connected to a radiator 14 and a cooling tower 11 located on the outside of the north shed above ground. Both the cooling tower 11 and the underground hot water tank 13 are connected to underground water pipes 22. The underground hot water tank 13 is connected to the radiator 14. The air-source heat pump water heater 10 is located inside the north shed of the greenhouse, effectively utilizing the space and reducing waste. The north shed also serves to buffer the impact of atmospheric temperature on greenhouse crops. The air-source heat pump water heater 10 can be used to cool the greenhouse air and warm the water.

[0031] The slide rail trolley 32 is connected to the photovoltaic thermal panel 20 via a vertical support 19, and the outer frame of the photovoltaic thermal panel 20 is slidably connected to the vertical support 19. The photovoltaic thermal panel 20 can be freely adjusted in angle by sliding between the outer frame of the photovoltaic thermal panel 20 and the vertical support 19. This, combined with a time and solar angle model established using big data, precisely matches the angle to obtain maximum illumination and maximize the utilization of solar energy.

[0032] Adjustable Angle Scheme: During ascent, the slide rail 32 releases its locking mechanism and starts power. The slide rail 32 on the vertical support 19 provides an upward force, while the lower slide rail 32 provides an upward oblique force. Both the highest and lowest points of the photovoltaic thermal panel 20 rise, increasing the angle between the photovoltaic thermal panel 20 and the horizontal plane. Upon reaching the designated distance, the slide rail 32 locks. During descent, the slide rail 32 releases its locking mechanism, applying a moderate force to control the speed. Under the influence of gravity along the slide rail 18 and friction, the panel slowly moves downward along the slide rail 18, decreasing the angle between the photovoltaic thermal panel 20 and the horizontal plane. Upon reaching the designated distance, the slide rail 32 locks. Adjustments are made every 30 minutes. This system is connected to the network and can make judgments based on online weather information. If strong winds (level 7 gale) are encountered, the photovoltaic thermal panel angle is adjusted to the minimum (greater than 0 degrees), and all sliding rail cars are locked at 32 degrees. If heavy snow is encountered, the photovoltaic thermal panel angle is adjusted to the maximum to reduce snow accumulation. If heavy rain is encountered, the photovoltaic thermal panel angle is adjusted to the maximum (not 0 degrees) to reduce the area exposed to rain. If both strong winds and heavy rain, or strong winds and heavy snow are encountered, strong winds take priority and the system responds to strong wind weather first.

[0033] A flat plate solar collector 23 is provided on the outer side of the south shed. A third fan 24 is provided on the flat plate solar collector 23. The third fan 24 is used to transport heat energy to the pebbles 25 laid on both sides of the south shed.

[0034] The slide rail 32 is equipped with friction plates 35, grooves 33, and couplings 34. The friction plates 35 are located between the slide rail 32 and the slide rail 18. The grooves 33 are used to connect the four corners of the photovoltaic thermal plate 20. The couplings 34 are connected to the multi-functional rotating shaft. The slide rail 32 has grooves 33 on its top for connecting the four corners of the photovoltaic thermal plate 20. The multi-functional rotating shaft is connected to the coupling 34 at the bottom of the slide rail 32 and contains a power device to rotate the multi-functional rotating shaft. The slide rail 32 obtains the power to move by rotating its own motor. The slide rail 32 has different movement states depending on the force applied by the friction plates 35 to the slide rail 18. When the applied force is large, the slide rail 32 is locked and fixed to the slide rail 18 and no longer moves. When the applied force is moderate, its movement speed can be controlled. When no force is applied, the slide rail 32 operates normally. The coupling 34 of the slide rail 32 is empty. The multi-functional shaft is slightly longer than the distance between adjacent slide rail 32s at the same height. Both ends of the multi-functional shaft can enter the coupling 34 from the top. The coupling 34 has a rotation locking structure to lock the multi-functional shaft and the coupling 34. Under the action of the power unit, the coupling 34 and the multi-functional shaft can rotate together.

[0035] The multi-functional rotating shaft has four modules. The hook 30 can be connected to the insulation blanket 21 to achieve automated control of unfolding and retracting. The snow sweeper 29 is used to clear snow piles, reduce the stress on the greenhouse, and extend its service life. If the snow sweeper 29 encounters ice, it will activate the recovery device to retract the snow sweeper 29. Its front end is made of stiff bristles 27, which can reduce damage to the greenhouse while ensuring snow sweeping ability. The sand clearing stiff bristles 27, together with the rotation of the main shaft 31, can have a good sand clearing effect, ensuring the cleanliness of the greenhouse and ensuring the cleaning effect. Multiple hot water pipes 28 can automatically adjust their shape according to the size of the ice, improve the ice melting effect, and extend the service life of the greenhouse. Each small water pipe can move (not connected) and the water pipe is also elastic. The outermost layer is also flexible. When encountering ice of different shapes, each small water pipe will show different curvatures due to the different forces exerted on the water pipe by the ice.

[0036] The multi-functional shaft includes a main shaft 31 connected to a coupling 34 and stiff bristles 27, hot water pipes 28, snowplows 29, and hooks 30 arranged radially in a cross shape on the outer side.

[0037] The greenhouse is equipped with an insulation blanket 21, which is connected to a hook 30.

[0038] The greenhouse frame is equipped with greenhouse film 26.

[0039] A laser rangefinder 36 is installed below the photovoltaic thermal panel 20. The laser rangefinder 36 is located at the intersection of the slide rail 18 and the vertical support 19, and can measure the distance (hereinafter referred to as distance) between the highest point of the photovoltaic thermal panel 20 and the rangefinder. The laser rangefinder 36 is only activated when the angle is adjusted. Since the greenhouse of this application is manufactured in a standardized manner, a general model of the angle and distance of the photovoltaic thermal panel 20 can be built. The greenhouse of this application determines the other based on either the distance or the angle of the photovoltaic thermal panel 20.

[0040] The local solar angle is determined based on the time and solar angle model. Since the angle of the photovoltaic thermal panel 20 is equal to 90 degrees, the solar angle is determined. Then, the distance is determined based on the general model of the angle and distance of the photovoltaic thermal panel 20. The relationship between the highest distance and the determined distance is then judged, and the sliding car 32 is adjusted accordingly.

[0041] Baffle 1, Baffle 2, Baffle 3, Baffle 4, Baffle 5, Baffle 6, and Baffle 9 (hereinafter collectively referred to as baffles) are all as follows: Figure 5 As shown, wall 16 Figure 6 As shown, the baffle and wall 16 have a concave-convex connection structure. When the baffle is opened, it separates from the wall 16. Since baffle 1 and baffle 4 are connected to the north wall 16, and baffle 3, baffle 6, and baffle 9 are connected to the south wall 16, baffle 1, baffle 3, baffle 4, baffle 6, and baffle 9 are all double-layered baffles. The hollow layer of wall 16 contains a layer of air, which has a higher thermal resistance and better insulation effect than the case where there is no air. When the channel shown by the baffle is closed, the concave and convex parts of the baffle and wall 16 complement each other. Baffle 2, baffle 5, as well as the upper and lower vents, do not have insulation requirements and are single-layered baffles.

[0042] The radiator 14 is located in the middle of the south shed. When the wind from the lower vent reaches the radiator 14 in the middle, it is reheated. When it reaches the southernmost side, it can still heat the greenhouse. The radiator 14 in the middle can also easily radiate the entire greenhouse, making the temperature of the greenhouse tend to be uniform.

[0043] Sunlight shines on the photovoltaic thermal panel 20, and the generated waste heat enters the hollow layer of the wall 16 and is stored in the phase change material 15.

[0044] Flat plate solar collector 23 collects sunlight and generates heat, which is then forcibly sent into the underground pebble area 25 by the third fan 24 to store the heat. The pebble area 25 is only covered on both sides of the south greenhouse film to prevent cold air from entering the greenhouse from underground and harming the crops, and to reduce land modification and damage.

[0045] Sunlight shines into the glass 17 of the south shed wall 16, causing the temperature to rise and the phase change material 15 stored in the wall 16 and glass 17 to be heated.

[0046] Thermometers are installed in the upper, middle, and lower spaces and in the soil inside the greenhouse, and outdoor thermometers are also installed. An upper temperature warning point is set at 6 degrees Celsius, a lower warning temperature at 1.5 degrees Celsius, and a target temperature of 3.5 degrees Celsius. The main controller analyzes temperature change trends.

[0047] If, without machine intervention, two or three thermometers in the south shed show temperatures below the lower warning temperature and a downward trend, or if one thermometer shows a temperature above the upper warning temperature and an upward trend, activate the following global temperature control.

[0048] During the day, the temperature is around 3.5 degrees Celsius at the No. 3 baffle, which is normal. At this time, the No. 1 baffle, the No. 3 baffle, the No. 6 baffle, the upper vent, the lower vent, and the No. 7 baffle are closed, while the No. 2 baffle, the No. 4 baffle, and the No. 5 baffle are open. The waste heat generated on the photovoltaic thermal panel 20 will enter the north shed through the No. 4 baffle. The north shed vent is closed. Usually, the north shed is warmer than the outside temperature.

[0049] During the day, when the temperature inside the greenhouse is 1.5 degrees Celsius below the lower warning temperature, the outside temperature is monitored. If the outside temperature is higher than the current temperature inside the greenhouse, the ventilation system of the south shed is turned on. If the outside temperature is lower than the current temperature inside the greenhouse, baffles 6, 2, and 1 are closed, and baffles 9, 3, the upper vent, the lower vent, and baffle 4 are opened. The third fan 24 is turned on, and the waste heat generated on the photovoltaic thermal panel 20 enters the south shed through baffle 9, heating the upper space of the greenhouse. Air enters the hollow layer of wall 16 through baffle 4 and rises, absorbing the heat stored in the phase change material 15, increasing in temperature, and then enters the hollow layer of wall 16 through baffle 3 and the upper vent. Meanwhile, due to the density difference, the hollow layer between glass 17 and wall 16 will have natural convection. At this time, the hot water stored in the underground hot water tank 13 will enter the radiator 14 through the pipe. After the temperature recovers, the first baffle 1, the third baffle 3, the fourth baffle 4, the upper vent and the seventh baffle 9 will be closed, and the second baffle 2, the fifth baffle 5, the sixth baffle 6 and the lower vent will be opened. The waste heat generated on the photovoltaic thermal panel 20 will enter the south shed through the lower vent. The air source water heater 10 will be started, the north shed vent will be opened, and the hot water in the underground hot water tank 13 will be replenished. After that, based on the previous state, the sixth baffle 6 will be closed, the fourth baffle 4 will be opened, and the waste heat generated on the photovoltaic thermal panel 20 will enter the north shed through the fourth baffle 4, and the normal state will be restored.

[0050] During the day, the data analysis shows a downward trend. At this time, baffles 1, 2, 3, 4, 5, and 6 are closed, while baffle 9, the upper vent, and the lower vent are open. The waste heat generated on the photovoltaic thermal panel 20 will enter the south shed through baffle 9. The air in the south shed enters from the lower vent, absorbs the heat stored in the phase change material 15 between the wall 16 and the glass 17, and the temperature rises. It then exits from the upper vent, driven by natural convection formed by density differences.

[0051] During the day, when the temperature inside the greenhouse is 6 degrees Celsius higher than the warning temperature, the outside temperature is checked. If the outside temperature is lower than the temperature inside the greenhouse, the south vent is opened. If the outside temperature is higher than the temperature inside the greenhouse, the north vent is opened, and baffles 2, 7, and 5 are closed. Baffles 1, 3, 4, 6, the upper vent, and the lower vent are opened. The air source water heater 10 is turned on, and the first fan 7 and the second fan 8 are turned on. The air source water heater 10 absorbs heat from the air, causing the air to cool down. Baffles 4, 6, the lower vent, 1, 3, 3, the upper vent, 2, 5, and 7 are closed. The first fan 7 and the third fan 24 are turned on, bringing cold air into the south vent and heat into the water, forming hot water stored in the underground hot water tank 13.

[0052] During the day, the temperature rises by degrees Celsius in a short period of time, showing an upward trend, and remains at a normal level (as above) until it reaches the upper critical state.

[0053] At night, the data analysis shows a downward trend. Baffle 4 (upper ventilation opening) is closed, while baffles 1 (lower ventilation opening), 2 (higher ventilation opening), 3 (lower ventilation opening), 5 (lower ventilation opening), 6 (lower ventilation opening), and 9 (lower ventilation opening) are opened. The first fan 7 is started. The air entering from baffle 1 (higher ventilation opening) has three paths: one is upward along the hollow layer and into the south shed through baffle 9 (lower ventilation opening); the second is downward through the hollow layer between glass 17 and wall 16 through baffle 3 (lower ventilation opening) and into the south shed through the lower ventilation opening; the third is downward along the hollow layer of wall 16, through baffle 6 (lower ventilation opening) and into the south shed through the lower ventilation opening.

[0054] At night, when the temperature inside the greenhouse is 1.5 degrees Celsius lower than the warning temperature of the first baffle, the fourth baffle and the upper vent are closed, while the first baffle, the second baffle, the third baffle, the fifth baffle, the sixth baffle, the lower vent, and the seventh baffle are opened. The first fan 7 is started. The air entering from the first baffle has three paths: one is upward along the hollow and into the south shed through the seventh baffle 9; the second is downward through the hollow passage between the glass 17 and the wall 16 from the third baffle and into the south shed through the lower vent; and the third is downward along the hollow layer of the wall 16, through the sixth baffle 6, and into the south shed through the lower vent. At this time, the hot water stored in the underground hot water tank 13 enters the radiator 14 through the pipeline. After the temperature recovers, the first baffle 1, the second baffle 2, the third baffle 3, the fourth baffle 4, the fifth baffle 5 and the sixth baffle 6 are closed, and the upper and lower vents are opened. The greenhouse is continuously kept warm by natural circulation and the heat released by the phase change material 15 inside the glass 17.

[0055] At night, when the temperature inside the greenhouse is 6 degrees Celsius higher than the warning temperature of baffle 6, open baffles 1, 3, 4, 6, the upper vent, and the lower vent. Close baffles 2, 5, and 9. Turn on the second fan 8. Cooler air enters the south greenhouse from the north greenhouse through baffles 4, 6, and the lower vent. Under the pressure difference, warmer air from the south greenhouse enters the north greenhouse through the upper vent, baffle 3, and baffle 1. If the temperature on the south side is the same as the north greenhouse, but the south greenhouse is still higher than the target temperature, close baffles 1, 2, 3, 4, 5, 6, and 9. Open part of the insulation blanket 21. The temperature drops to the target temperature. Then close the insulation blanket 21.

[0056] If, without machine intervention, only one thermometer in the south shed displays a temperature higher than the warning level, activate the following local temperature control.

[0057] If the temperature in the lower part is too low, day or night, baffles 1, 3, 5, and 6, as well as the lower vent, will be opened, while baffles 2, 4, the upper vent, and 9 will be closed, and the first fan 7 will be activated. Air from the north shed will flow downwards along the wall-to-wall interlayer, passing through baffles 5, 6, and the lower vent into the south shed. Additionally, air will flow downwards along the hollow layer between glass 17 and wall 16, passing through baffle 3 and the lower vent into the south shed.

[0058] When the temperature in the central area is too low, both day and night, baffles 3, 4, 5, and 6, along with the upper vent, will be opened, while baffles 1, 2, the lower vent, and 9 will be closed. The second fan 8 will be turned on. Airflow from the north shed will rise along the hollow layer of wall 16, passing through baffles 5, 3, and the upper vent into the south shed. Additionally, airflow will rise along the hollow layer between glass 17 and wall 16, passing through baffle 6 and the upper vent into the south shed.

[0059] The top temperature is too low. During the day, baffle 9 (number 7) is open, while baffles 1 (number 1), 2 (number 2), 3 (number 3), 4 (number 4), 5 (number 5), 6 (number 6), the upper vent, and the lower vent are closed. Waste heat generated on the photovoltaic thermal panel 20 enters the south shed through baffle 9 (number 7). At night, baffles 2 (number 2), 3 (number 3), 4 (number 4), 5 (number 5), 6 (number 6), and 9 (number 7) are open, while baffle 1 (number 1), the upper vent, and the lower vent are closed. The second fan 8 is turned on. Air from the north shed rises along the hollow layer of wall 16, entering the south shed through baffles 5 (number 5), 2 (number 2), and 9 (number 7). It also rises along the hollow layer between glass 17 and wall 16, entering the south shed through baffles 6 (number 6), 3 (number 3), 2 (number 2), and 9 (number 7).

[0060] When the soil temperature exceeds the set upper limit, water from the underground cold water tank 12 enters the cooling tower 11 for cooling, and then enters the underground water pipe 22 to cool the soil. The water then enters the underground cold water tank 12.

[0061] When the soil temperature is lower than the set lower limit, water from the underground hot water tank 13 enters the underground water pipe 22 to heat the soil, and then the water enters the underground cold water tank 12.

[0062] The advantages of this application are as follows:

[0063] 1. Instead of air temperature driving ground temperature, ground temperature can be directly controlled quickly and accurately.

[0064] 2. The air source water heater 10 is located inside the north shed, which effectively utilizes the space of the north shed and reduces space waste. The north shed is used to buffer the impact of atmospheric temperature on greenhouse crops. The air source water heater 10 can be used to cool the air in the greenhouse and heat the water.

[0065] 3. Automated control.

[0066] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A photovoltaic and solar thermal greenhouse and a plant growth cycle control system, characterized in that: The system includes a greenhouse and a temperature control system. The greenhouse is equipped with an adjustable photovoltaic thermal panel (20) on top and a hollow wall (16) with phase change material (15) inside. A sliding rail (18) is provided on the outside. The wall (16) divides the greenhouse into a north shed and a south shed. The upper part of the wall (16) is equipped with a first fan (7), a first baffle (1), a second baffle (2), and a third baffle (3). The lower part is equipped with a second fan (8), a fourth baffle (4), a fifth baffle (5), and a sixth baffle (6). The first fan (7) is located between the first baffle (1), the second baffle (2), and the third baffle (3). The second fan (8) is located between the fourth baffle. Between the plate (4), the fifth baffle (5) and the sixth baffle (6); the top of the wall (16) near the south shed is provided with the seventh baffle (9); the middle of the wall (16) near the south shed is provided with glass (17), the glass (17) and the wall (16) form a Trumbo wall, the upper part of the Trumbo wall is provided with an upper ventilation opening, and the lower part is provided with a lower ventilation opening; the slide rail (18) is provided with two sets of slidingly connected slide rail carriages (32), one of which is located on the upper slide rail carriage (32) with the upper end connected to the photovoltaic thermal plate (20) and the lower end provided with a multi-functional rotating shaft, and the lower slide rail carriage (32) is provided with a multi-functional rotating shaft; the south shed is provided with a radiator (14) connected to the temperature control system.

2. The photovoltaic and solar thermal greenhouse and plant growth cycle control system according to claim 1, characterized in that: The temperature control system includes an air source water heater (10) installed in the north shed. The air source water heater (10) is connected to an underground cold water tank (12) and an underground hot water tank (13) located underground. The underground cold water tank (12) is connected to a radiator (14) and a cooling tower (11) located on the outside of the north shed above ground. The cooling tower (11) and the underground hot water tank (13) are both connected to an underground water pipe (22) located underground. The underground hot water tank (13) is connected to the radiator (14).

3. The photovoltaic and solar thermal greenhouse and plant growth cycle control system according to claim 1, characterized in that: The slide rail vehicle (32) is connected to the photovoltaic thermal plate (20) via a vertical support (19), and the outer frame of the photovoltaic thermal plate (20) is slidably connected to the vertical support (19).

4. The photovoltaic and solar thermal greenhouse and plant growth cycle control system according to claim 1, characterized in that: A flat plate solar collector (23) is provided on the outside of the south shed. A third fan (24) is provided on the flat plate solar collector (23). The third fan (24) is used to transport heat energy to the pebbles (25) laid on both sides of the south shed.

5. The photovoltaic and solar thermal greenhouse and plant growth cycle control system according to claim 1, characterized in that: The slide rail carriage (32) is provided with a friction plate (35), a groove (33) and a coupling (34). The friction plate (35) is located between the slide rail carriage (32) and the slide rail (18). The groove (33) is used to connect the four included corners of the photovoltaic thermal plate (20). The coupling (34) is connected to the multi-functional rotating shaft.

6. The photovoltaic and solar thermal greenhouse and plant growth cycle control system according to claim 5, characterized in that: The multi-functional shaft includes a main shaft (31) connected to a coupling (34) and stiff bristles (27), hot water pipe (28), snowplow (29), and hook (30) arranged radially in a cross shape on the outside.

7. The photovoltaic and solar thermal greenhouse and plant growth cycle control system according to claim 6, characterized in that: The greenhouse is equipped with an insulation blanket (21) above it, and the insulation blanket (21) is connected to a hook (30).

8. The photovoltaic and solar thermal greenhouse and plant growth cycle control system according to claim 1, characterized in that: The greenhouse frame is equipped with a greenhouse film (26).

9. The photovoltaic thermal greenhouse and plant growth cycle control system according to claim 1, characterized in that: A laser rangefinder (36) is installed below the photovoltaic thermal panel (20).

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