Crop heat preservation protection device for day and night temperature difference monitoring

Abstract

The invention discloses a crop heat preservation protection device for day and night temperature difference monitoring, which comprises a fence frame, a polycarbonate coaming, a heat preservation door curtain, an arched straight plate, an arched bent plate, an intelligent control cabinet, an energy supply unit, a light transmission unit and a heat supply unit, and is characterized in that the polycarbonate coaming is fixedly mounted on the fence frame. Solar energy is absorbed through the glass outer cover and the heat absorption pipe, and heat is transferred to the heat exchange pipe; ammonia liquid in the heat exchange pipe absorbs heat and then is converted into a gas state, ammonia gas flows towards the upper portion of the heat exchange pipe, enters the heat transfer pipe and finally flows to the upper portion of the heat transfer pipe, and a heat collection liquid pipe is inserted into the upper portion of the heat transfer pipe. Water in the heat storage tank is pumped through the liquid inlet pipe, and the water flows into the heat collection liquid pipe to take away heat of ammonia gas in the heat transfer pipe, so that the ammonia gas is converted into ammonia liquid and flows back to the heat exchange pipe; heat taken away by the heat collection liquid pipe flows back to the heat storage tank through the liquid outlet pipe, so that solar heat is stored; when the day and night temperature difference changes, hot water can be taken from the heat storage tank to heat the greenhouse, and the temperature difference is prevented from being too large.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural planting, and in particular to a crop heat preservation and protection device for monitoring the temperature difference between day and night. Background Art

[0002] In modern agricultural production, greenhouses are an important means to improve crop yield and quality, and their role cannot be ignored. However, facing the environmental conditions with large temperature differences between day and night, existing greenhouses have exposed a series of shortcomings, especially in terms of heat preservation and protection. These problems not only affect the growth and development of crops, but also have a negative impact on the economic benefits of farmers.

[0003] Most of the crop greenhouses on the market today use traditional covering materials such as plastic film or glass to maintain internal temperatures. Although these materials can resist low temperatures to a certain extent, their performance is often unsatisfactory when there is a large temperature difference between day and night. During the day when there is plenty of sunlight, the temperature inside the greenhouse rises rapidly, and at night, as the temperature drops sharply, the temperature inside the greenhouse also drops rapidly. Such drastic temperature fluctuations put great stress on crops, especially for those crops that are sensitive to temperature changes, which can easily lead to slow growth, increased diseases, and even death.

[0004] Traditional greenhouse covering materials lack effective insulation measures and cannot provide sufficient heat retention at night. Although plastic film has certain light transmittance and heat preservation properties, its thermal insulation performance is poor and it is difficult to block the heat radiated outward at night. This makes the temperature inside the greenhouse significantly lower than the external ambient temperature at night, increasing the risk of crops suffering from frost damage. In addition, some old greenhouses have further weakened their insulation effect due to aging or damage of materials, resulting in increased energy loss. This situation not only increases energy consumption, but may also require additional heating equipment to maintain a suitable temperature, increasing operating costs.

[0005] Existing greenhouse designs usually fail to fully consider the changing patterns of day and night temperature differences and their specific impacts on crops. Most greenhouses lack intelligent control systems and are unable to automatically adjust the internal environment according to real-time temperature changes. For example, during high temperature periods during the day, if ventilation and cooling are not carried out in time, overheating may occur in the greenhouse, resulting in excessive crop transpiration and severe water loss, affecting growth conditions. During low temperature periods at night, manual intervention is required to turn on the heating device or cover the additional insulation layer. This process is time-consuming and laborious, and it is easy to cause inaccurate temperature control due to improper operation, affecting crop health.

[0006] Another significant problem is that existing greenhouse facilities do not perform well in extreme weather conditions. When faced with severe weather such as sudden cold waves or strong winds, traditional greenhouse structures often cannot withstand the huge external pressure and are prone to damage or even collapse. This not only threatens the safety of crops, but may also lead to serious economic losses. At the same time, due to the lack of early warning mechanisms and emergency response measures, it is difficult for farmers to take effective preventive measures in advance, further exacerbating the risk level.

[0007] Existing greenhouse technology also has a lot of room for improvement in terms of resource utilization efficiency. For example, many greenhouses do not make full use of solar energy resources, and the large amount of heat energy accumulated during the day is not effectively stored and utilized, and at night it is completely dependent on external energy for replenishment. This approach not only wastes precious natural resources, but also does not conform to the concept of sustainable development. In addition, some greenhouses use electric heating or other high-energy consumption equipment to maintain a constant temperature, which increases electricity consumption and carbon emissions, and has an adverse impact on environmental protection.

[0008] Traditional greenhouse management methods are relatively extensive and lack scientific basis and technical support. Farmers mainly rely on experience to judge when to adjust the internal environmental parameters of the greenhouse, such as temperature and humidity. This method is highly subjective and inaccurate. Especially under large-scale planting conditions, it is difficult to achieve refined management with manpower alone, and it is easy to cause temperature and humidity imbalance in local areas, affecting the overall yield and quality.

[0009] Therefore, how to provide a crop insulation and protection device for monitoring the temperature difference between day and night is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0010]

[0013] One object of the present invention is to provide a crop heat preservation and protection device for monitoring the temperature difference between day and night. The present invention absorbs solar energy through a glass cover and a heat absorbing pipe, and transfers heat to the heat exchange pipe. The ammonia liquid in the heat exchange pipe absorbs heat and turns into gas. The ammonia flows to the top of the heat exchange pipe and enters the heat transfer pipe, and finally flows to the top of the heat transfer pipe. A heat collecting liquid pipe is inserted above the heat transfer pipe. The first electromagnetic valve is opened, and water in the heat storage tank is drawn through the liquid inlet pipe. The water flows into the heat collecting liquid pipe and takes away the heat of the ammonia in the heat transfer pipe, so that the ammonia is converted into ammonia liquid and flows back to the heat exchange pipe. The heat taken away by the heat collecting liquid pipe flows out through the liquid outlet pipe. The second electromagnetic valve is opened to send hot water back to the heat storage tank, thereby storing solar energy. When the temperature difference between day and night changes, hot water can be taken from the heat storage tank to heat the greenhouse to avoid excessive temperature difference.

[0011] The present invention uses the electricity generated by the photovoltaic panels for a long time when the sunlight is insufficient and the weather is cloudy during the day, and the hot water stored in the heat storage tank is insufficient to support the change of the temperature difference between day and night. The battery pack is used as a power source to supply electricity to the thermostat, the electric heating tube and the temperature sensor. The thermostat controls the temperature of the electric heating tube, and the electric heating tube heats the water in the heat storage tank to maintain the temperature of the greenhouse day and night. When the sunlight is insufficient and the weather is cloudy for a long time during the day, and the electricity in the battery pack is insufficient, the intelligent control cabinet automatically switches to the national power grid for power supply.

[0012] The present invention closes the first solenoid valve and the second solenoid valve, opens the third solenoid valve and the fourth solenoid valve, starts the centrifugal pump, and the centrifugal pump supplies the hot water stored in the heat storage tank to the heat dissipation inlet pipe through the liquid heat inlet pipe. The hot water enters the heat dissipation fins through the heat dissipation inlet pipe, and the hot water in the heat dissipation fins flows out from the heat dissipation outlet pipe. The hot water in the heat dissipation outlet pipe enters the liquid heat outlet pipe, and the hot water inside the liquid heat outlet pipe flows back into the heat storage tank; the wind motor is started, and the rotation shaft of the wind motor rotates to drive the rotation of the impeller. The wind force generated by the impeller takes away the heat of the heat dissipation fins. The wind force generated by the impeller flows along the curve on the top of the greenhouse to form a U-shaped circulation, thereby ensuring that the temperature in the greenhouse is evenly distributed.

[0013] A crop heat preservation and protection device for monitoring the day-night temperature difference according to an embodiment of the present invention comprises a fence frame, a polycarbonate fence board, a heat preservation door curtain, an arched straight board, an arched curved board, an intelligent control cabinet, an energy supply unit, a light transmission unit and a heating unit, wherein the polycarbonate fence board is fixedly mounted on the fence frame, the heat preservation door curtain is fixedly mounted on the front end of the fence frame, both ends of the arched straight board are fixedly mounted on the top of the fence frame, the ends of the arched curved board are fixedly mounted on the fence frame and the arched straight board, the intelligent control cabinet is located in the fence frame, the energy supply unit is mounted on the arched straight board and the arched curved board, the light transmission unit is fixedly mounted on the arched straight board and the arched curved board, and the heating unit is mounted on the arched straight board;

[0014] The energy supply unit includes a solar energy collection component, a heat storage tank and a photovoltaic power generation panel, wherein the solar energy collection component is installed in an arched curved plate and an arched straight plate, the heat storage tank is installed in a fence frame, and the photovoltaic power generation panel is fixedly installed on the top of the arched straight plate;

[0015] The light transmission unit comprises an outer glass, a liquid crystal film, an inner glass and a metal lead, wherein the outer glass is fixedly mounted on the top of the liquid crystal film, the outer glass is fixedly mounted on the arched straight plate and the arched curved plate, the inner glass is fixedly mounted on the bottom of the liquid crystal film, the inner glass is fixedly mounted on the arched straight plate and the arched curved plate, the metal lead is fixedly mounted on the outer glass and the inner glass, and the metal lead is fixedly mounted on the liquid crystal film;

[0016] The heating unit includes a heating component, a heat supply component and an air circulation component, wherein the heating component is fixedly installed in the heat storage tank, and seven air circulation components are arranged on the heating component, and the seven air circulation components are all fixedly installed on the arched curved plate.

[0017] Furthermore, a first support plate is fixedly provided on both sides of the arched straight plate, and the top of the first support plate is fixedly installed on the bottom of the inner glass; a second support plate is fixedly provided on both sides of the arched curved plate, and the top of the second support plate is fixedly installed on the bottom of the inner glass; electrode contacts are fixedly provided on both sides of the arched curved plate, and the electrode contacts are connected to the metal leads; the upper half of the intelligent control cabinet is the controller, and the lower half of the intelligent control cabinet is the battery pack.

[0018] Furthermore, the solar energy collecting assembly comprises a mounting plate, a glass cover, a heat absorbing pipe, a heat exchanging pipe and a heat transfer pipe. The bottom of the mounting plate is fixedly mounted on the top of the arched curved plate, the glass cover is fixedly mounted on the mounting plate, the heat absorbing pipe is fixedly mounted inside the glass cover, the heat exchanging pipe is fixedly mounted inside the heat absorbing pipe, one end of the heat transfer pipe is fixedly mounted on the heat exchanging pipe, and the other end of the heat transfer pipe extends into the arched straight plate.

[0019] Furthermore, the solar energy collection component also includes a liquid inlet pipe, a centrifugal pump, a first solenoid valve, a heat collecting liquid pipe, a liquid outlet pipe and a second solenoid valve, wherein one end of the liquid inlet pipe is fixedly mounted on the heat storage tank, the centrifugal pump is fixedly mounted on the liquid inlet pipe, the first solenoid valve is fixedly mounted on the liquid inlet pipe, one end of the heat collecting liquid pipe is fixedly mounted on the other end of the liquid inlet pipe, one end of the liquid outlet pipe is fixedly mounted on the other end of the heat collecting liquid pipe, the heat collecting liquid pipe is located inside the arched straight plate, the other end of the liquid outlet pipe is fixedly mounted on the heat storage tank, and the second solenoid valve is fixedly mounted on the liquid outlet pipe.

[0020] Furthermore, the heat storage tank consists of an outer tank, a connecting plate, an inner tank and an insulation layer, wherein the connecting plate is fixedly mounted on the inner top and inner bottom of the outer tank, the inner tank is located inside the outer tank, the top and bottom of the inner tank are both fixedly mounted on the connecting plate, and the insulation layer is fixedly mounted inside the outer tank and the inner tank.

[0021] Furthermore, the heating assembly includes a thermostat, an electric heating tube and a temperature sensor, wherein the bottom of the thermostat is fixedly mounted on the top of the heat storage tank, the top of the electric heating tube is fixedly mounted on the bottom of the thermostat, the bottom of the electric heating tube extends into the heat storage tank, and the temperature sensor is fixedly mounted on the inner wall of the heat storage tank.

[0022] Furthermore, the heating component includes a liquid heat inlet pipe, a third solenoid valve, a liquid heat outlet pipe and a fourth solenoid valve, wherein the liquid heat inlet pipe is fixedly installed on the liquid inlet pipe, the third solenoid valve is fixedly installed on the liquid heat inlet pipe, the liquid heat outlet pipe is fixedly installed on the liquid outlet pipe, and the fourth solenoid valve is fixedly installed on the liquid heat outlet pipe.

[0023] Furthermore, the heating component also includes a heat dissipation inlet pipe, heat dissipation fins, a heat dissipation outlet pipe and a mounting rod, wherein one end of the heat dissipation inlet pipe is fixedly mounted on an end of the heat dissipation inlet pipe away from the third solenoid valve, the liquid inlet end of the heat dissipation fin is fixedly mounted on the other end of the heat dissipation inlet pipe, one end of the heat dissipation outlet pipe is fixedly mounted on one end of the liquid heat outlet pipe, the liquid outlet end of the heat dissipation fin is fixedly mounted on the other end of the heat dissipation outlet pipe, the top of the mounting rod is fixedly mounted on the bottom of the arched straight plate, and the bottom of the mounting rod is fixedly mounted on the top of the heat dissipation fin.

[0024] Furthermore, the wind circulation assembly includes a mounting plate, a wind cylinder and a mesh plate, wherein the top of the mounting plate is fixedly mounted on the bottom of the arched curved plate, the top of the wind cylinder is fixedly mounted on the bottom of the mounting plate, the wind cylinder is inclined, and the mesh plate is fixedly mounted on both ends of the wind cylinder.

[0025] Furthermore, the wind circulation component also includes a motor frame, a wind motor and an impeller, wherein the outer wall of the motor frame is fixedly mounted on the inner wall of the wind cylinder, the wind motor is fixedly mounted in the motor frame, and the impeller is fixedly mounted on the rotating shaft of the wind motor.

[0026] The beneficial effects of the present invention are:

[0027] The present invention absorbs solar energy through the glass cover and the heat absorbing pipe, and transfers the heat to the heat exchange pipe. The ammonia liquid in the heat exchange pipe absorbs heat and turns into gas. The ammonia flows to the top of the heat exchange pipe and enters the heat transfer pipe, and finally flows to the top of the heat transfer pipe. The heat collecting liquid pipe is inserted above the heat transfer pipe. The first electromagnetic valve is opened, and water in the heat storage tank is drawn through the liquid inlet pipe. The water flows into the heat collecting liquid pipe and takes away the heat of the ammonia in the heat transfer pipe, so that the ammonia is converted into ammonia liquid and flows back to the heat exchange pipe. The heat taken away by the heat collecting liquid pipe flows out through the liquid outlet pipe, and the second electromagnetic valve is opened to send hot water back to the heat storage tank, so as to store solar energy. When the temperature difference between day and night changes, hot water can be taken from the heat storage tank to heat the greenhouse to avoid excessive temperature difference.

[0028] The present invention uses the electricity generated by the photovoltaic panels for a long time when the sunlight is insufficient and the weather is cloudy during the day, and the hot water stored in the heat storage tank is insufficient to support the change of the temperature difference between day and night. The battery pack is used as a power source to supply electricity to the thermostat, the electric heating tube and the temperature sensor. The thermostat controls the temperature of the electric heating tube, and the electric heating tube heats the water in the heat storage tank to maintain the temperature of the greenhouse day and night. When the sunlight is insufficient and the weather is cloudy for a long time during the day, and the electricity in the battery pack is insufficient, the intelligent control cabinet automatically switches to the national power grid for power supply.

[0029] The present invention closes the first solenoid valve and the second solenoid valve, opens the third solenoid valve and the fourth solenoid valve, starts the centrifugal pump, and the centrifugal pump supplies the hot water stored in the heat storage tank to the heat dissipation inlet pipe through the liquid heat inlet pipe. The hot water enters the heat dissipation fins through the heat dissipation inlet pipe, and the hot water in the heat dissipation fins flows out from the heat dissipation outlet pipe. The hot water in the heat dissipation outlet pipe enters the liquid heat outlet pipe, and the hot water inside the liquid heat outlet pipe flows back into the heat storage tank; the wind motor is started, and the rotation shaft of the wind motor rotates to drive the rotation of the impeller. The wind force generated by the impeller takes away the heat of the heat dissipation fins. The wind force generated by the impeller flows along the curve on the top of the greenhouse to form a U-shaped circulation, thereby ensuring that the temperature in the greenhouse is evenly distributed. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0031] Figure 1 This is a schematic diagram of the overall structure of a crop heat preservation and protection device for monitoring the day and night temperature difference proposed by the present invention;

[0032] Figure 2 A schematic diagram of the structure of an arched curved plate of a crop heat preservation and protection device for monitoring the day and night temperature difference proposed by the present invention;

[0033] Figure 3 A crop heat preservation and protection device for monitoring the temperature difference between day and night proposed by the present invention Figure 2 A magnified image of point A;

[0034] Figure 4 A schematic diagram of the structure of a centrifugal pump of a crop heat preservation and protection device for monitoring the day and night temperature difference proposed by the present invention;

[0035] Figure 5 A crop heat preservation and protection device for monitoring the temperature difference between day and night proposed by the present invention Figure 4 The enlarged view of point B;

[0036] Figure 6 A cross-sectional view of a heat storage tank of a crop heat preservation and protection device for monitoring the day and night temperature difference proposed by the present invention;

[0037] Figure 7 A crop heat preservation and protection device for monitoring the temperature difference between day and night proposed by the present invention Figure 6 Enlarged view of point C;

[0038] Figure 8 This is a schematic diagram of the structure of a liquid inlet pipe of a crop heat preservation and protection device for monitoring the day and night temperature difference proposed by the present invention;

[0039] Fig. 9 A crop heat preservation and protection device for monitoring the temperature difference between day and night proposed by the present invention Figure 8 The enlarged view of point D;

[0040] Fig.10 This is a schematic diagram of the partial structure of the metal lead wire of a crop heat preservation and protection device for monitoring the day and night temperature difference proposed by the present invention;

[0041] Fig.11 A schematic diagram of the partial structure of a liquid crystal film of a crop heat preservation and protection device for monitoring the day-night temperature difference proposed by the present invention;

[0042] Fig.12 A cross-sectional view of the heat dissipation fins of a crop heat preservation and protection device for monitoring the day-night temperature difference proposed by the present invention;

[0043] Fig.13 This is a schematic structural diagram of a wind turbine motor of a crop heat preservation and protection device for monitoring the day-night temperature difference proposed by the present invention.

[0044] In the figure: 1. fence frame; 2. polycarbonate enclosure; 3. heat-insulating door curtain; 4. arched straight board; 401. first support board; 5. arched curved board; 501. second support board; 502. electrode contact sheet; 6. intelligent control cabinet; 601. battery pack; 7. solar energy collection assembly; 701. mounting plate; 702. glass cover; 703. heat-absorbing pipe; 704. heat-exchanging pipe; 705. heat-transfer pipe; 706. liquid inlet pipe; 707. centrifugal pump; 708. first electromagnetic valve; 709. heat-collecting liquid pipe; 7010. liquid outlet pipe; 7011. second electromagnetic valve; 8. heat storage tank; 801. outer tank; 802. connecting plate; 803. inner tank; 804. heat-insulating layer; 9 , photovoltaic panels; 10, outer glass; 11, inner glass; 12, metal leads; 13, heating components; 1301, thermostat; 1302, electric heating tube; 1303, temperature sensor; 14, heating components; 1401, liquid heat inlet pipe; 1402, third solenoid valve; 1403, liquid heat outlet pipe; 1404, fourth solenoid valve; 1405, heat dissipation inlet pipe; 1406, heat dissipation fins; 1407, heat dissipation outlet pipe; 1408, mounting rod; 15, wind circulation components; 1501, mounting vertical plate; 1502, wind cylinder; 1503, mesh plate; 1504, motor frame; 1505, wind motor; 1506, impeller; 16, liquid crystal film. DETAILED DESCRIPTION

[0045] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0046] In modern agricultural production, crop greenhouses are an important means to improve crop yield and quality, and their role cannot be ignored; however, faced with environmental conditions with large temperature differences between day and night, existing crop greenhouses have exposed a series of shortcomings, especially in terms of thermal insulation and protection; these problems not only affect the growth and development of crops, but also have a negative impact on farmers' economic benefits.

[0047] Most of the crop greenhouses on the market today use traditional covering materials such as plastic film or glass to maintain internal temperature. Although these materials can resist low temperatures to a certain extent, their performance is often unsatisfactory when there is a large temperature difference between day and night. When the sun is abundant during the day, the temperature inside the greenhouse rises rapidly, and at night, as the temperature drops sharply, the temperature inside the greenhouse also drops rapidly. Such drastic temperature fluctuations bring great pressure to crops, especially for those crops that are sensitive to temperature changes, which can easily lead to slow growth, increased diseases, and even death.

[0048] Traditional greenhouse covering materials lack effective insulation measures and cannot provide sufficient heat retention at night. Although plastic film has certain light transmittance and heat preservation properties, its thermal insulation performance is poor and it is difficult to block the heat radiated outward at night; this makes the temperature inside the greenhouse significantly lower than the external ambient temperature at night, increasing the risk of crops suffering from frost damage; in addition, some old greenhouses have further weakened their insulation effect due to aging or damage of materials, resulting in increased energy loss; this situation not only increases energy consumption, but may also require additional heating equipment to maintain a suitable temperature, increasing operating costs.

[0049] In order to solve the above problems, the following technical solutions are proposed:

[0050] Please refer to Figures 1 to 13 The present invention provides a crop heat preservation and protection device for monitoring the day and night temperature difference, comprising a fence frame 1, a polycarbonate fence board 2, a heat preservation door curtain 3, an arched straight board 4, an arched curved board 5, an intelligent control cabinet 6, an energy supply unit, a light transmission unit and a heating unit, wherein the polycarbonate fence board 2 is fixedly mounted on the fence frame 1, the heat preservation door curtain 3 is fixedly mounted on the front end of the fence frame 1, both ends of the arched straight board 4 are fixedly mounted on the top of the fence frame 1, the ends of the arched curved board 5 are fixedly mounted on the fence frame 1 and the arched straight board 4, the intelligent control cabinet 6 is located in the fence frame 1, the energy supply unit is mounted on the arched straight board 4 and the arched curved board 5, the light transmission unit is fixedly mounted on the arched straight board 4 and the arched curved board 5, and the heating unit is mounted on the arched straight board 4. On the upper part, first support plates 401 are fixedly provided on both sides of the arched straight plate 4, and the top of the first support plate 401 is fixedly installed on the bottom of the inner glass 11; second support plates 501 are fixedly provided on both sides of the arched curved plate 5, and the top of the second support plate 501 is fixedly installed on the bottom of the inner glass 11; electrode contacts 502 are fixedly provided on both sides of the arched curved plate 5, and the electrode contacts 502 are connected to the metal lead 12; the upper half of the intelligent control cabinet 6 is a controller, and the lower half of the intelligent control cabinet 6 is a battery pack 601, and the battery pack 601 is used to store the electric energy generated by the photovoltaic panel 9, which is convenient for heating the heat storage tank 8; temperature sensors and humidity sensors are distributed in the crop greenhouse for monitoring the environment in the crop greenhouse.

[0051] Specifically, the energy supply unit includes a solar energy collection component 7, a heat storage tank 8 and a photovoltaic power generation panel 9, wherein the solar energy collection component 7 is installed in the arched curved plate 5 and the arched straight plate 4, and the solar energy collection component 7 is used to collect solar energy as a commonly used thermal energy storage. The heat storage tank 8 is installed in the fence frame 1, and the heat storage tank 8 is used to store thermal energy. The photovoltaic power generation panel 9 is fixedly installed on the top of the arched straight plate 4, and the photovoltaic power generation panel 9 is used to absorb solar energy and convert it into electrical energy.

[0052] The solar energy collecting assembly 7 comprises a mounting plate 701, a glass cover 702, a heat absorbing pipe 703, a heat exchanging pipe 704 and a heat transfer pipe 705. The bottom of the mounting plate 701 is fixedly mounted on the top of the arched curved plate 5, the glass cover 702 is fixedly mounted on the mounting plate 701, the heat absorbing pipe 703 is fixedly mounted inside the glass cover 702, the heat exchanging pipe 704 is fixedly mounted inside the heat absorbing pipe 703, one end of the heat transfer pipe 705 is fixedly mounted on the heat exchanging pipe 704, and the other end of the heat transfer pipe 705 extends into the arched straight plate 4. The solar energy collecting assembly 7 also comprises a liquid inlet pipe 706, a centrifugal pump 707 and a first electromagnetic valve 708. , a heat collecting liquid pipe 709, a liquid outlet pipe 7010 and a second solenoid valve 7011, wherein one end of the liquid inlet pipe 706 is fixedly installed on the heat storage tank 8, the centrifugal pump 707 is fixedly installed on the liquid inlet pipe 706, the first solenoid valve 708 is fixedly installed on the liquid inlet pipe 706, one end of the heat collecting liquid pipe 709 is fixedly installed on the other end of the liquid inlet pipe 706, one end of the liquid outlet pipe 7010 is fixedly installed on the other end of the heat collecting liquid pipe 709, the heat collecting liquid pipe 709 is located inside the arched straight plate 4, the other end of the liquid outlet pipe 7010 is fixedly installed on the heat storage tank 8, and the second solenoid valve 7011 is fixedly installed on the liquid outlet pipe 7010.

[0053] The heat storage tank 8 consists of an outer tank 801, a connecting plate 802, an inner tank 803 and an insulation layer 804, wherein the connecting plate 802 is fixedly mounted on the inner top and inner bottom of the outer tank 801, the inner tank 803 is located inside the outer tank 801, the top and bottom of the inner tank 803 are both fixedly mounted on the connecting plate 802, and the insulation layer 804 is fixedly mounted inside the outer tank 801 and the inner tank 803.

[0054] More specifically, the light-transmitting unit includes an outer glass 10, a liquid crystal film 16, an inner glass 11 and a metal lead 12, wherein the outer glass 10 is fixedly mounted on the top of the liquid crystal film 16, the outer glass 10 is fixedly mounted on the arched straight plate 4 and the arched curved plate 5, the inner glass 11 is fixedly mounted on the bottom of the liquid crystal film 16, and the voltage of the liquid crystal film 16 is controlled by the intelligent control cabinet 6. The higher the applied voltage, the tighter the liquid crystal molecules of the liquid crystal film 16 are arranged, and the higher the transparency; conversely, when the voltage is low, the liquid crystal molecules are arranged irregularly, the transparency is low, and the state is turbid or opaque. The inner glass 11 is fixedly mounted on the arched straight plate 4 and the arched curved plate 5, the metal lead 12 is fixedly mounted on the outer glass 10 and the inner glass 11, and the metal lead 12 is fixedly mounted on the liquid crystal film 16.

[0055] More specifically, the heating unit includes a heating component 13, a heating component 14 and an air circulation component 15, wherein the heating component 13 is fixedly installed in the heat storage tank 8, the heating component 14 is installed on the arched straight plate 4, and seven air circulation components 15 are provided, and the seven air circulation components 15 are all fixedly installed on the arched curved plate 5.

[0056] The heating assembly 13 includes a temperature controller 1301, an electric heating tube 1302 and a temperature sensor 1303, wherein the bottom of the temperature controller 1301 is fixedly installed on the top of the heat storage tank 8, the top of the electric heating tube 1302 is fixedly installed on the bottom of the thermostat 1301, the bottom of the electric heating tube 1302 extends into the heat storage tank 8, and the temperature sensor 1303 is fixedly installed on the inner wall of the heat storage tank 8.

[0057] The heating component 14 includes a liquid heat inlet pipe 1401, a third solenoid valve 1402, a liquid heat outlet pipe 1403 and a fourth solenoid valve 1404, wherein the liquid heat inlet pipe 1401 is fixedly mounted on the liquid inlet pipe 706, the third solenoid valve 1402 is fixedly mounted on the liquid heat inlet pipe 1401, the liquid heat outlet pipe 1403 is fixedly mounted on the liquid outlet pipe 7010, and the fourth solenoid valve 1404 is fixedly mounted on the liquid heat outlet pipe 1403; the heating component 14 also includes a heat dissipation inlet pipe 1405, a heat dissipation fin 1406, a heat dissipation outlet pipe 1407 and a mounting rod 1408, Among them, one end of the heat dissipation inlet pipe 1405 is fixedly installed on the end of the heat dissipation inlet pipe 1405 away from the third solenoid valve 1402, the liquid inlet end of the heat dissipation fin 1406 is fixedly installed on the other end of the heat dissipation inlet pipe 1405, one end of the heat dissipation outlet pipe 1407 is fixedly installed on one end of the liquid heat outlet pipe 1403, the liquid outlet end of the heat dissipation fin 1406 is fixedly installed on the other end of the heat dissipation outlet pipe 1407, the top of the mounting rod 1408 is fixedly installed on the bottom of the arched straight plate 4, and the bottom of the mounting rod 1408 is fixedly installed on the top of the heat dissipation fin 1406.

[0058] The wind circulation component 15 includes a mounting plate 1501, a wind cylinder 1502 and a mesh plate 1503, wherein the top of the mounting plate 1501 is fixedly mounted on the bottom of the arched curved plate 5, the top of the wind cylinder 1502 is fixedly mounted on the bottom of the mounting plate 1501, the wind cylinder 1502 is inclined, and the mesh plate 1503 is fixedly mounted on both ends of the wind cylinder 1502; the wind circulation component 15 also includes a motor frame 1504, a wind motor 1505 and an impeller 1506, wherein the outer wall of the motor frame 1504 is fixedly mounted on the inner wall of the wind cylinder 1502, the wind motor 1505 is fixedly mounted in the motor frame 1504, and the impeller 1506 is fixedly mounted on the rotating shaft of the wind motor 1505.

[0059] Furthermore, the polycarbonate enclosure 2 is embedded in the fence frame 1, the thermal insulation door curtain 3 has a zipper-type door opening method, and the outer glass 10, liquid crystal film 16 and inner glass 11 are embedded in the grid of the arched straight board 4 and the arched curved board 5.

[0060] The crop greenhouse adjusts the temperature during the day by controlling the voltage of the liquid crystal film 16 through the intelligent control cabinet 6. The higher the applied voltage, the tighter the liquid crystal molecules of the liquid crystal film 16 are arranged and the higher the transparency. On the contrary, when the voltage is low, the liquid crystal molecules are arranged irregularly, the transparency is low, and the state is turbid or opaque. The transparency of the outer glass 10, the liquid crystal film 16 and the inner glass 11 can be adjusted. By increasing the transparency, more sunlight is allowed to shine into the greenhouse to increase the temperature. When the temperature is too high, the intelligent control cabinet 6 can reduce the transparency, reduce the amount of sunlight transmitted, and reduce the temperature inside the greenhouse. At night or in cold weather conditions, the liquid crystal film 16 can maintain a low transparency, reduce heat loss, help keep the temperature inside the greenhouse high, reduce the need for heating, and achieve energy-saving effects.

[0061]

[0113] During the day, the solar energy collecting assembly 7 absorbs solar energy through the glass cover 702 and the heat absorbing pipe 703. The heat is transferred to the heat exchange pipe 704. The ammonia liquid in the heat exchange pipe 704 absorbs the heat and turns into gas. The ammonia flows to the top of the heat exchange pipe 704 and enters the heat transfer pipe 705 until it reaches the top of the heat transfer pipe 705. The top of the heat transfer pipe 705 is inserted into the heat collecting liquid pipe 709.

[0062] Start the centrifugal pump 707 and open the first electromagnetic valve 708. Water in the heat storage tank 8 is pumped through the liquid inlet pipe 706. The liquid in the liquid inlet pipe 706 flows into the heat collecting liquid pipe 709. The liquid in the heat collecting liquid pipe 709 takes away the heat of the ammonia in the heat transfer pipe 705. The ammonia is converted into ammonia liquid and flows back into the heat exchange pipe 704. The heat collecting liquid pipe 709 takes away the heat and flows into the liquid outlet pipe 7010. The second electromagnetic valve 7011 is opened and the liquid outlet pipe 7010 flows back into the heat storage tank 8. The heat storage tank 8 stores the heat of the solar energy. When the temperature difference between day and night changes, the hot water in the heat storage tank 8 is used to heat the greenhouse at night to avoid the temperature difference between day and night.

[0063] During the day when there is insufficient sunlight and the weather is gloomy, the hot water stored in the heat storage tank 8 is insufficient to support the change in temperature difference between day and night. The electricity generated by the photovoltaic panels 9 for a long time is activated, and the battery pack 601 is used as a power source to supply electricity to the thermostat 1301, the electric heating tube 1302 and the temperature sensor 1303. The thermostat 1301 controls the temperature of the electric heating tube 1302, and the electric heating tube 1302 heats the water in the heat storage tank 8 to maintain the temperature in the greenhouse day and night.

[0064] When there is insufficient sunlight during the day and the weather is dark for a long time, the power in the battery pack 601 is insufficient, the intelligent control cabinet 6 automatically switches to the national grid for power supply.

[0065] When heating the greenhouse, the first solenoid valve 708 and the second solenoid valve 7011 are closed, the third solenoid valve 1402 and the fourth solenoid valve 1404 are opened, and the centrifugal pump 707 is started. The centrifugal pump 707 supplies the hot water stored in the heat storage tank 8 to the heat dissipation inlet pipe 1405 through the liquid heat inlet pipe 1401. The hot water enters the heat dissipation fins 1406 through the heat dissipation inlet pipe 1405. The hot water in the heat dissipation fins 1406 flows out from the heat dissipation outlet pipe 1407. The hot water in the heat dissipation outlet pipe 1407 enters the liquid heat outlet pipe 1403, and the hot water inside the liquid heat outlet pipe 1403 flows back to the heat storage tank 8.

[0066] Start the wind motor 1505, the rotating shaft of the wind motor 1505 rotates to drive the impeller 1506 to rotate, and the wind force generated by the impeller 1506 takes away the heat of the heat dissipation fins 1406. The wind force generated by the impeller 1506 flows along the curved top of the greenhouse and flows in the greenhouse in a U-shaped shape, so that the temperature distribution inside the greenhouse is more uniform.

[0067] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A crop heat preservation and protection device for monitoring the temperature difference between day and night, characterized in that: The invention comprises a fence frame (1), a polycarbonate fence panel (2), a heat-insulating door curtain (3), an arched straight board (4), an arched curved board (5), an intelligent control cabinet (6), an energy supply unit, a light-transmitting unit and a heating unit, wherein the polycarbonate fence panel (2) is fixedly mounted on the fence frame (1), the heat-insulating door curtain (3) is fixedly mounted on the front end of the fence frame (1), both ends of the arched straight board (4) are fixedly mounted on the top of the fence frame (1), the end of the arched curved board (5) is fixedly mounted on the fence frame (1) and the arched straight board (4), the intelligent control cabinet (6) is located in the fence frame (1), the energy supply unit is mounted on the arched straight board (4) and the arched curved board (5), the light-transmitting unit is fixedly mounted on the arched straight board (4) and the arched curved board (5), and the heating unit is mounted on the arched straight board (4); The energy supply unit comprises a solar energy collection component (7), a heat storage tank (8) and a photovoltaic power generation panel (9), wherein the solar energy collection component (7) is installed in an arched curved plate (5) and an arched straight plate (4), the heat storage tank (8) is installed in a fence frame (1), and the photovoltaic power generation panel (9) is fixedly installed on the top of the arched straight plate (4); The light-transmitting unit comprises an outer glass (10), a liquid crystal film (16), an inner glass (11) and a metal lead (12), wherein the outer glass (10) is fixedly mounted on the top of the liquid crystal film (16), the outer glass (10) is fixedly mounted on the arched straight plate (4) and the arched curved plate (5), the inner glass (11) is fixedly mounted on the bottom of the liquid crystal film (16), the inner glass (11) is fixedly mounted on the arched straight plate (4) and the arched curved plate (5), the metal lead (12) is fixedly mounted on the outer glass (10) and the inner glass (11), and the metal lead (12) is fixedly mounted on the liquid crystal film (16); The heating unit comprises a heating component (13), a heat supply component (14) and an air circulation component (15), wherein the heating component (13) is fixedly mounted in a heat storage tank (8), the heating component (14) is mounted on an arched straight plate (4), and seven air circulation components (15) are provided, and the seven air circulation components (15) are all fixedly mounted on an arched curved plate (5).

2. The crop heat preservation and protection device for monitoring the day and night temperature difference according to claim 1, characterized in that: A first support plate (401) is fixedly arranged on both sides of the arched straight plate (4), and the top of the first support plate (401) is fixedly mounted on the bottom of the inner glass (11). A second support plate (501) is fixedly arranged on both sides of the arched curved plate (5), and the top of the second support plate (501) is fixedly mounted on the bottom of the inner glass (11). Electrode contact sheets (502) are fixedly arranged on both sides of the arched curved plate (5), and the electrode contact sheets (502) are connected to the metal lead wire (12). The upper half of the intelligent control cabinet (6) is a controller, and the lower half of the intelligent control cabinet (6) is a battery pack (601).

3. The crop heat preservation and protection device for monitoring the day and night temperature difference according to claim 1, characterized in that: The solar energy collecting assembly (7) comprises a mounting plate (701), a glass cover (702), a heat absorbing pipe (703), a heat exchange pipe (704) and a heat transfer pipe (705). The bottom of the mounting plate (701) is fixedly mounted on the top of the arched curved plate (5), the glass cover (702) is fixedly mounted on the mounting plate (701), the heat absorbing pipe (703) is fixedly mounted inside the glass cover (702), the heat exchange pipe (704) is fixedly mounted inside the heat absorbing pipe (703), one end of the heat transfer pipe (705) is fixedly mounted on the heat exchange pipe (704), and the other end of the heat transfer pipe (705) extends into the arched straight plate (4).

4. The crop heat preservation and protection device for monitoring the day and night temperature difference according to claim 3 is characterized in that: The solar energy collection assembly (7) further comprises a liquid inlet pipe (706), a centrifugal pump (707), a first solenoid valve (708), a heat collecting liquid pipe (709), a liquid outlet pipe (7010) and a second solenoid valve (7011), wherein one end of the liquid inlet pipe (706) is fixedly mounted on the heat storage tank (8), the centrifugal pump (707) is fixedly mounted on the liquid inlet pipe (706), the first solenoid valve (708) is fixedly mounted on the liquid inlet pipe (706), one end of the heat collecting liquid pipe (709) is fixedly mounted on the other end of the liquid inlet pipe (706), one end of the liquid outlet pipe (7010) is fixedly mounted on the other end of the heat collecting liquid pipe (709), the heat collecting liquid pipe (709) is located inside the arched straight plate (4), the other end of the liquid outlet pipe (7010) is fixedly mounted on the heat storage tank (8), and the second solenoid valve (7011) is fixedly mounted on the liquid outlet pipe (7010).

5. The crop heat preservation and protection device for monitoring the day and night temperature difference according to claim 1, characterized in that: The heat storage tank (8) comprises an outer tank (801), a connecting plate (802), an inner tank (803) and a heat-insulating layer (804), wherein the connecting plate (802) is fixedly mounted on the inner top and inner bottom of the outer tank (801), the inner tank (803) is located inside the outer tank (801), the top and bottom of the inner tank (803) are both fixedly mounted on the connecting plate (802), and the heat-insulating layer (804) is fixedly mounted inside the outer tank (801) and the inner tank (803).

6. The crop heat preservation and protection device for monitoring the day and night temperature difference according to claim 1, characterized in that: The heating component (13) comprises a temperature controller (1301), an electric heating tube (1302) and a temperature sensor (1303), wherein the bottom of the temperature controller (1301) is fixedly mounted on the top of the heat storage tank (8), the top of the electric heating tube (1302) is fixedly mounted on the bottom of the temperature controller (1301), the bottom of the electric heating tube (1302) extends into the heat storage tank (8), and the temperature sensor (1303) is fixedly mounted on the inner wall of the heat storage tank (8).

7. The crop heat preservation and protection device for monitoring the day and night temperature difference according to claim 1, characterized in that: The heating component (14) comprises a liquid heat inlet pipe (1401), a third solenoid valve (1402), a liquid heat outlet pipe (1403) and a fourth solenoid valve (1404), wherein the liquid heat inlet pipe (1401) is fixedly mounted on the liquid inlet pipe (706), the third solenoid valve (1402) is fixedly mounted on the liquid heat inlet pipe (1401), the liquid heat outlet pipe (1403) is fixedly mounted on the liquid outlet pipe (7010), and the fourth solenoid valve (1404) is fixedly mounted on the liquid heat outlet pipe (1403).

8. The crop heat preservation and protection device for monitoring the day and night temperature difference according to claim 7, characterized in that: The heating component (14) further comprises a heat dissipation inlet pipe (1405), a heat dissipation fin (1406), a heat dissipation outlet pipe (1407) and a mounting rod (1408), wherein one end of the heat dissipation inlet pipe (1405) is fixedly mounted on an end of the heat dissipation inlet pipe (1405) away from the third solenoid valve (1402), the liquid inlet end of the heat dissipation fin (1406) is fixedly mounted on the other end of the heat dissipation inlet pipe (1405), one end of the heat dissipation outlet pipe (1407) is fixedly mounted on one end of the liquid heat outlet pipe (1403), the liquid outlet end of the heat dissipation fin (1406) is fixedly mounted on the other end of the heat dissipation outlet pipe (1407), the top of the mounting rod (1408) is fixedly mounted on the bottom of the arched straight plate (4), and the bottom of the mounting rod (1408) is fixedly mounted on the top of the heat dissipation fin (1406).

9. The crop heat preservation and protection device for monitoring the day and night temperature difference according to claim 1, characterized in that: The wind circulation component (15) comprises a mounting plate (1501), a wind cylinder (1502) and a mesh plate (1503), wherein the top of the mounting plate (1501) is fixedly mounted on the bottom of the arched curved plate (5), the top of the wind cylinder (1502) is fixedly mounted on the bottom of the mounting plate (1501), the wind cylinder (1502) is inclined, and the mesh plate (1503) is fixedly mounted on both ends of the wind cylinder (1502).

10. The crop heat preservation and protection device for monitoring the day and night temperature difference according to claim 9, characterized in that: The wind circulation component (15) further comprises a motor frame (1504), a wind motor (1505) and an impeller (1506), wherein the outer wall of the motor frame (1504) is fixedly mounted on the inner wall of the wind cylinder (1502), the wind motor (1505) is fixedly mounted inside the motor frame (1504), and the impeller (1506) is fixedly mounted on the rotating shaft of the wind motor (1505).

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