CN209297183U - Systems for regulating the temperature in greenhouses - Google Patents

Abstract

The utility model provides a system for adjusting the temperature in a greenhouse, which includes a heating device, a ventilation device, a temperature sensor and a microcomputer controller. The heating device is arranged in the greenhouse to increase the air temperature in the greenhouse. The ventilation device is installed The top of the greenhouse is used to connect or seal the greenhouse to the atmosphere. The temperature sensor is installed in the greenhouse to detect the temperature in the greenhouse and transmit the detection signal to the microcomputer controller. The microcomputer controller is electrically connected to the heating device and the ventilation device respectively. sexual connection. Use the temperature sensor to monitor the temperature in the shed, and control the heating device and ventilation device through the microcomputer controller to automatically adjust the temperature in the shed, so that the crops can achieve high-quality and high-yield growth, and improve the yield and quality of the crops. The utility model can not only improve the output and quality of crops, but also reduce the labor cost of field management, conforms to the development trend of precision agriculture, and has the prospect of popularization and application.

Description

Systems for regulating the temperature in greenhouses

technical field

The utility model relates to the technical field of agricultural equipment, in particular to a system for regulating the temperature in a greenhouse.

Background technique

With the rapid development of economy and technology, agricultural greenhouses are widely used in agricultural production to grow vegetables, flowers, fruits, etc., to meet people's demand for off-season products. Greenhouse cultivation requires strict control of its growth environment, including temperature, humidity, carbon dioxide concentration, and light. However, at present, most greenhouse structures cannot automatically adjust the temperature inside the greenhouse, requiring human intervention in the environment of the greenhouse, which not only wastes manpower and material resources, but also is random, and cannot maintain the temperature in the greenhouse within a reasonable range, affecting the yield and quality of crops. For this reason, a system for adjusting the temperature in the greenhouse is designed. According to the growth rules of different crops, the temperature in the greenhouse can be automatically controlled, and the humidity, carbon dioxide concentration and light intensity in the greenhouse can be adjusted to make the crops reach high quality. , High-yield growth purpose, greatly improving the efficiency of agricultural production, in line with the development trend of precision agriculture.

Contents of the invention

The technical problem to be solved by the utility model is to provide a system for adjusting the temperature in the greenhouse, which can automatically control the temperature in the greenhouse according to the growth rules of different crops, and can also adjust the humidity, carbon dioxide concentration and The light intensity can greatly improve the yield and quality of crops.

In order to solve the above technical problems, the technical solution adopted by the utility model is: a system for adjusting the temperature in the greenhouse, including a heating device, a ventilation device, a temperature sensor and a microcomputer controller. To increase the air temperature in the greenhouse, the ventilation device is installed on the top of the greenhouse to connect or seal the greenhouse with the atmosphere. The temperature sensor is installed in the greenhouse, and its installation height is consistent with the height of the plants in the greenhouse. It is used to detect the temperature in the greenhouse. temperature, and the detection signal is transmitted to the microcomputer controller, and the microcomputer controller is electrically connected with the heating device and the ventilation device respectively.

In a preferred solution, the heating device includes a CO gas cylinder, a first flow regulating valve and a gas furnace, and the CO gas cylinder communicates with the gas inlet of the gas furnace through the first flow regulating valve to provide gas fuel for the gas furnace, and the first flow rate The regulating valve is connected with the microcomputer controller through the signal line, and the flow of CO gas is adjusted through the microcomputer controller.

In a preferred solution, the temperature raising device further includes an induced draft fan, a heat dissipation pipe and an arc-shaped heat collecting cover, and the inlet and outlet of the induced draft fan are connected with the arc-shaped heat collecting cover and the heat dissipation pipe respectively, and the arc-shaped heat collecting cover is made of a transparent material. It is formed and located above the gas furnace, which is used to evenly distribute the high-temperature gas generated by the gas furnace in the greenhouse.

In a preferred solution, the bottom of the heat pipe is provided with a plurality of exhaust holes, and the diameter of the exhaust holes increases sequentially along the direction of gas flow.

In a preferred solution, the temperature raising device further includes a carbon monoxide concentration detector and a carbon dioxide concentration detector electrically connected to the microcomputer controller, which are respectively used to detect the concentration of carbon monoxide and carbon dioxide in the greenhouse.

In a preferred solution, the temperature raising device also includes _H2 gas cylinder, a second flow regulating valve, a three-way valve and a humidity sensor, the _H2 gas cylinder communicates with the three-way valve through the second flow regulating valve, and the three-way valve is also respectively It communicates with the gas furnace and the first flow regulating valve, and the second flow regulating valve and the humidity sensor are respectively electrically connected with the microcomputer controller. The humidity sensor is used to detect the air humidity in the greenhouse and transmit the detection signal to the microcomputer controller.

In a preferred solution, the three-way valve is a three-position four-way solenoid valve, and its control end is connected to a microcomputer controller through a signal line.

In a preferred solution, the temperature raising device includes an electric heating air pipe electrically connected to a microcomputer controller, and the electric heating air pipe converts electric energy into heat energy for raising the air temperature in the greenhouse.

In a preferred solution, the ventilation device includes a ventilation window and an electric push rod, one end of the ventilation window is hinged to the frame of the greenhouse, the other end is connected to the frame of the greenhouse through an electric push rod, the electric push rod is electrically connected to the microcomputer controller, and the electric push rod is used to The rod drives the ventilation window to rotate around the hinge point to realize the communication or airtightness of the greenhouse with the atmosphere.

In a preferred solution, the ventilation device further includes a ventilation fan electrically connected to the microcomputer controller, and the ventilation fan is installed on the inside of the ventilation window close to the greenhouse for exhausting the air in the greenhouse from the ventilation window.

The utility model provides a system for regulating the temperature in a greenhouse. The above-mentioned structure has the following beneficial effects:

1) According to the growth law of different crops, different operating parameters are preset through the microcomputer controller, and the temperature sensor whose installation height is consistent with the height of the plants in the greenhouse is used to monitor the ambient temperature of the plants in the greenhouse in real time. When the temperature is lower than the set When the temperature is at the lower limit, the microcomputer controller automatically activates the heating device to increase the temperature in the greenhouse. When the temperature is higher than the set temperature upper limit, the microcomputer controller turns off the heating device, and at the same time automatically turns on the ventilation device to reduce the temperature in the greenhouse. , so as to realize the automatic control of the temperature in the shed, which not only reduces the labor intensity of field management, but also enables the crops to achieve high-quality and high-yield growth, and improve the yield and quality of crops;

2) Use CO gas to burn in the gas furnace to release a large amount of heat and light. The high-temperature gas generated is evenly distributed in the greenhouse through the heat dissipation pipe to quickly increase the temperature in the greenhouse, and at the same time consume the oxygen in the greenhouse to produce carbon dioxide Properly increasing the carbon dioxide concentration and light intensity in the shed can enhance the photosynthesis of crops and reduce the aerobic respiration of crops, which is conducive to the accumulation of photosynthetic products, greatly improving the yield and quality of crops, and the economic effect is very significant;

3) Use _H2 gas to burn in the gas furnace to generate heat, water vapor and light, and distribute the generated high-temperature gas evenly in the greenhouse through the heat dissipation pipe, which can not only quickly increase the temperature in the greenhouse, but also adjust the temperature in the greenhouse at the same time Humidity and light intensity enable crops to achieve high-quality, high-yield growth, and improve crop yield and quality;

4) Use the carbon dioxide concentration detector, temperature sensor and humidity sensor to monitor the CO ₂ concentration, temperature and humidity in the greenhouse respectively, and according to the growth law of different crops, the growth environment of the crops in the greenhouse is precisely controlled at different time periods, Through the coordinated cooperation of the gas furnace, the flow regulating valve of the electric heating air pipe and the three-way valve, the temperature in the greenhouse can be adjusted individually, and the temperature, _CO2 concentration and light intensity in the greenhouse can be adjusted at the same time, and the temperature, humidity and light intensity in the greenhouse can be adjusted at the same time. Light intensity and four heating modes that simultaneously adjust the temperature, humidity, _CO2 concentration and light intensity in the greenhouse are optional. The most economical heating mode is automatically selected according to the actual needs of crop growth, and the best state can be achieved with the least input. It not only improves the growth rate of crops and the efficiency of agricultural production, but also reduces the labor cost of field management, conforms to the development trend of precision agriculture, and has the prospect of popularization and application.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is the structural representation of heating device in the utility model;

Fig. 3 is the structural representation of ventilation device in the utility model;

Fig. 4 is a schematic diagram of the control structure of the utility model.

In the figure: heating device 1, ventilation device 2, temperature sensor 3, microcomputer controller 4, CO gas cylinder 5, first flow regulating valve 6, gas furnace 7, induced draft fan 8, heat dissipation pipe 9, arc heat collecting cover 10 , carbon monoxide concentration detector 11, carbon dioxide concentration detector 12, _H2 gas cylinder 13, second flow regulating valve 14, three-way valve 15, humidity sensor 16, electric heating air pipe 17, ventilation window 18, electric push rod 19, ventilation fan 20, roller blind machine 21, thermal insulation quilt 22.

Detailed ways

In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model will be further described in detail below in conjunction with the embodiments. In the following description, descriptions of known structures and technologies are omitted to avoid unnecessarily confusing the concept of the present invention.

As shown in Fig. 1-4, a system for regulating the temperature in the greenhouse includes a temperature raising device 1, a ventilation device 2, a temperature sensor 3 and a microcomputer controller 4, and the temperature raising device 1 is arranged in the greenhouse to increase the temperature in the greenhouse. air temperature, the ventilation device 2 is installed on the top of the greenhouse, and is used to communicate or seal the greenhouse with the atmosphere, and the temperature sensor 3 is arranged in the greenhouse, and its installation height is consistent with the height of the plants in the greenhouse, and is used to detect the temperature in the greenhouse. And the detection signal is transmitted to the microcomputer controller 4, and the microcomputer controller 4 is electrically connected with the heating device 1 and the ventilation device 2 respectively. According to the growth law of different crops, different operating parameters are preset through the microcomputer controller 4, and the temperature sensor 3 whose installation height is consistent with the height of the plants in the greenhouse is used to monitor the ambient temperature of the plants in the greenhouse in real time. When the temperature lower limit value, the microcomputer controller 4 automatically starts the heating device 1 to increase the temperature in the greenhouse. Reduce the temperature in the greenhouse, so as to realize the automatic control of the temperature in the greenhouse, which not only reduces the labor intensity of field management, but also enables the crops to achieve high-quality and high-yield growth, and improve the yield and quality of crops.

In a preferred solution, the heating device 1 includes a CO gas cylinder 5, a first flow regulating valve 6 and a gas furnace 7, and the CO gas cylinder 5 communicates with the gas inlet of the gas furnace 7 through the first flow regulating valve 6, which is a gas furnace 7 provides gas fuel, the first flow regulating valve 6 is connected with the microcomputer controller 4 through the signal line, and the flow of CO gas is regulated through the microcomputer controller 4 . The first flow regulating valve 6 is a fine and small pneumatic film regulating valve produced by Wenzhou Yihao Automatic Control Valve Co., Ltd., which has the functions of flow regulation and flow display. The opening degree of the first flow regulating valve 6 is automatically controlled by the microcomputer controller 4 to realize the controlled combustion of CO gas in the gas furnace 7, consume the oxygen in the shed to generate carbon dioxide, release a large amount of heat and light, and appropriately increase the air temperature in the shed. Temperature, carbon dioxide concentration and light intensity can enhance the photosynthesis of crops and reduce the aerobic respiration of crops, which is conducive to the accumulation of photosynthetic products, greatly improving the yield and quality of crops, and the economic effect is very significant.

In a preferred solution, the temperature raising device 1 also includes an induced draft fan 8, a heat dissipation pipe 9 and an arc-shaped heat collecting cover 10. The heat collecting cover 10 is made of a transparent material and is positioned above the gas furnace 7 for evenly distributing the high-temperature gas generated by the gas furnace 7 in the greenhouse. Existing agricultural greenhouses are generally 30-50 meters long, and the high-temperature gas generated by the gas furnace 7 can be evenly distributed in the greenhouse by using the induced draft fan 8, a plurality of heat dissipation pipes 9 and the arc-shaped heat collecting cover 10, so as to ensure The temperature is the same, and the burning flame is located in the center of the arc-shaped heat collecting cover 10, which is convenient for evenly distributing the light generated by the combustion into the greenhouse. Unified management.

In a preferred solution, the bottom of the heat pipe 9 is provided with a plurality of exhaust holes, and the diameters of the exhaust holes increase sequentially along the gas flow direction. Existing agricultural greenhouses are generally 30-50 meters long, and the high-temperature gas generated by the gas furnace 7 is evenly distributed in the greenhouse through a plurality of exhaust holes by using the induced draft fan 8 and the heat dissipation pipe 9 to ensure that the temperature in the greenhouse is the same everywhere.

In a preferred solution, the temperature raising device 1 further includes a carbon monoxide concentration detector 11 and a carbon dioxide concentration detector 12 electrically connected to the microcomputer controller 4, which are respectively used to detect the concentration of carbon monoxide and carbon dioxide in the greenhouse. According to the preferences and growth laws of different crops, the carbon dioxide concentration detector 12 and the microcomputer controller 4 are used to precisely control the _CO2 concentration in the greenhouse within a suitable range, so that the crops can achieve high-quality, high-yield growth purposes, and at the same time, the carbon monoxide concentration detector 11 is used Detect the concentration of CO in the greenhouse to prevent CO poisoning of personnel and ensure the safe operation of the system.

In a preferred solution, the temperature raising device 1 also includes _H2 gas cylinder 13, a second flow regulating valve 14, a three-way valve 15 and a humidity sensor 16, and _H2 gas cylinder 13 passes through the second flow regulating valve 14 and the three-way valve 15, the three-way valve 15 is also connected with the gas furnace 7 and the first flow regulating valve 6 respectively, the second flow regulating valve 14 and the humidity sensor 16 are respectively electrically connected with the microcomputer controller 4, and the humidity sensor 16 is used to detect air humidity, and the detection signal is transmitted to the microcomputer controller 4. The second flow regulating valve 14 is a fine and small pneumatic film regulating valve produced by Wenzhou Yihao Automatic Control Valve Co., Ltd., which has the functions of flow regulation and flow display. Use _H2 gas to burn in the gas furnace 7 to generate heat, water vapor and light, and distribute the generated high-temperature gas evenly in the greenhouse through the heat dissipation pipe 9, which can not only quickly increase the temperature in the greenhouse, but also adjust the temperature in the greenhouse at the same time Humidity and light intensity enable crops to achieve high-quality, high-yield growth, and improve crop yield and quality. In addition, use the three-way valve 15 to realize the combustion of the mixed gas of _CO and H in the gas furnace 7, and adjust the ratio of the two gases through the first flow regulating valve 6 and the second flow regulating valve 14. At the same time as the light intensity, the humidity and carbon dioxide concentration in the shed can be adjusted by changing the concentration of water vapor and carbon dioxide in the combustion exhaust gas, which not only saves fuel resources, saves energy and protects the environment, but also makes the adjustment more efficient.

In a preferred solution, the three-way valve 15 is a three-position four-way solenoid valve, and its control end is connected to the microcomputer controller 4 through a signal line, and can be automatically adjusted by the microcomputer controller 4 according to the needs of humidity and carbon dioxide concentration in the shed. The combustion of the mixed gas of CO and _H2 in the gas furnace 7 facilitates simultaneous adjustment of the temperature, _CO2 concentration and light intensity in the greenhouse, the simultaneous adjustment of the temperature, humidity and light intensity in the greenhouse, and the simultaneous adjustment of the temperature in the greenhouse, The automatic control of the three heating modes of humidity, _CO2 concentration and light intensity improves the automation level of the system.

In a preferred solution, the temperature raising device 1 includes an electric heating air pipe 17 electrically connected to the microcomputer controller 4, and the electric heating air pipe 17 converts electric energy into heat energy for raising the air temperature in the greenhouse. When the humidity and carbon dioxide concentration in the shed are within the appropriate range, and only the temperature in the shed needs to be increased, the electric heating air duct 17 can be activated by the microcomputer controller 4 for heating, saving energy and helping to maximize economic benefits.

In a preferred solution, the ventilation device 2 includes a ventilation window 18 and an electric push rod 19, one end of the ventilation window 18 is hinged to the greenhouse frame, and the other end is connected to the greenhouse frame through the electric push rod 19, and the electric push rod 20 is connected to the microcomputer controller 4 Electrically connected, use the electric push rod 19 to drive the ventilation window 18 to rotate around the hinge point, so as to realize the communication or airtightness of the greenhouse with the atmosphere. Drive the ventilation window 18 to rotate around the hinge point through the electric push rod 19 to connect the greenhouse with the atmosphere. The ventilation device 2 is installed on the top of the greenhouse, which is conducive to the upward distribution of hot air in the greenhouse, and fresh air enters from both ends of the greenhouse. Using a microcomputer controller 4. Control the telescopic length of the electric push rod 19, automatically adjust the opening and closing size of the air outlet of the greenhouse, thereby adjusting the temperature, humidity and _CO2 concentration in the greenhouse to meet the growth needs of crops.

In a preferred solution, the ventilation device 2 also includes a ventilation fan 20 electrically connected to the microcomputer controller 4, and the ventilation fan 20 is installed on the inside of the ventilation window 18 close to the greenhouse for exhausting the air in the greenhouse from the ventilation window 18. When running into windless or breeze weather, the ventilation fan 18 is started by the microcomputer controller 4, which can accelerate the convection of hot air and fresh air in the shed, thereby improving the efficiency of agricultural production.

In the preferred scheme, a thermal insulation device is also included, and the thermal insulation device includes a rolling machine 21 and a thermal insulation quilt 22. The rolling shutter machine 21 is installed above the greenhouse, and the rotating rod of the rolling shutter machine 21 is fixedly connected to one end of the thermal insulation quilt 22. , the thermal insulation quilt 22 is covered on the greenhouse or packed up, and the control end of the roller blind machine 21 is connected with the microcomputer controller 4 through a signal line. The heat preservation quilt 22 is composed of a waterproof layer on the surface, a middle insulation cotton layer and a reflective layer on the bottom surface. The reflective layer is an aluminized reflective film on the mirror surface, which can not only reflect most of the infrared rays, reduce infrared radiation and heat dissipation, improve the effect of heat preservation, but also It can reflect the light generated by the gas furnace 7, which is beneficial to improve the uniformity of light in the greenhouse. Utilize the internal clock of microcomputer controller 4, according to preset time (such as 6 o'clock in the morning) thermal insulation quilt 22 is packed up by shutter machine 21, facilitate sunlight to shoot in the greenhouse, at preset time (such as 6 o'clock in the afternoon) ) Cover the heat preservation quilt 22 on the greenhouse through the roller shutter machine 21 to carry out heat preservation and light reflection.

Above-mentioned embodiment is only the preferred technical scheme of the present utility model, is not all embodiments, and should not be considered as the restriction to the present utility model, and the protection scope of the present utility model should be the technical scheme described in the claims, including the claims The equivalent replacements of the technical features in the recorded technical solutions are within the scope of protection. That is, equivalent replacement and improvement within this scope are also within the protection scope of the present utility model.

Claims (8)

1. A system for regulating the temperature in a greenhouse, characterized in that it includes a heating device (1), a ventilation device (2), a temperature sensor (3) and a microcomputer controller (4), and the heating device (1) is set In the greenhouse, it is used to increase the air temperature in the greenhouse. The ventilation device (2) is installed on the top of the greenhouse to connect or seal the greenhouse with the atmosphere. The temperature sensor (3) is installed in the greenhouse, and its installation height is the same as that of the greenhouse The height of the plants is consistent, used to detect the temperature in the greenhouse, and transmit the detection signal to the microcomputer controller (4), and the microcomputer controller (4) is electrically connected to the heating device (1) and the ventilation device (2) respectively; The heating device (1) includes a CO gas cylinder (5), a first flow regulating valve (6) and a gas furnace (7). The CO gas cylinder (5) passes through the first flow regulating valve (6) and the gas furnace (7) ) is connected to the gas inlet to provide gas fuel for the gas furnace (7), the first flow regulating valve (6) is connected to the microcomputer controller (4) through the signal line, and the flow of CO gas is adjusted through the microcomputer controller (4); The heating device (1) also includes an H2 gas cylinder (13), a second flow regulating valve (14), a three-way valve (15) and a humidity sensor (16), and the H2 gas cylinder (13) passes through the second flow regulating valve (14) communicates with the three-way valve (15), the three-way valve (15) is also communicated with the gas furnace (7) and the first flow regulating valve (6), the second flow regulating valve (14) and the humidity sensor (16 ) are respectively electrically connected to the microcomputer controller (4), and the humidity sensor (16) is used to detect the air humidity in the greenhouse and transmit the detection signal to the microcomputer controller (4). 2. The system for adjusting the temperature in the greenhouse according to claim 1, characterized in that: the heating device (1) also includes an induced draft fan (8), a heat dissipation pipe (9) and an arc-shaped heat collecting cover ( 10), the inlet and outlet of the induced draft fan (8) are connected with the arc-shaped heat collecting cover (10) and the heat dissipation pipe (9) respectively, and the arc-shaped heat collecting cover (10) is made of transparent material and located ), for evenly distributing the high-temperature gas generated by the gas furnace (7) in the greenhouse. 3. The system for adjusting the temperature in the greenhouse according to claim 2, characterized in that: the bottom of the heat dissipation pipe (9) is provided with a plurality of vent holes, and the diameter of the vent holes increases sequentially along the direction of gas flow. big. 4. The system for adjusting the temperature in the greenhouse according to claim 1, characterized in that: the heating device (1) also includes a carbon monoxide concentration detector (11) electrically connected to the microcomputer controller (4) and The carbon dioxide concentration detector (12) is respectively used for detecting the concentration of carbon monoxide and the concentration of carbon dioxide in the greenhouse. 5. The system for adjusting the temperature in the greenhouse according to claim 1, characterized in that: the three-way valve (15) is a three-position four-way solenoid valve, and its control end communicates with the microcomputer controller ( 4) Connect. 6. The system for adjusting the temperature in the greenhouse according to claim 1, characterized in that: the heating device (1) includes an electric heating air pipe (17) electrically connected to the microcomputer controller (4), and the electric heating air The tube (17) converts electrical energy into thermal energy, which is used to increase the air temperature in the greenhouse. 7. The system for adjusting the temperature in the greenhouse according to claim 1, characterized in that: the ventilation device (2) includes a ventilation window (18) and an electric push rod (19), one end of the ventilation window (18) It is hinged with the framework of the greenhouse, and the other end is connected with the framework of the greenhouse through the electric push rod (19), which is electrically connected with the microcomputer controller (4), and the electric push rod (19) is used to drive the ventilation window (18) around The hinge point rotates to realize the connection or airtightness between the greenhouse and the atmosphere. 8. The system for adjusting the temperature in the greenhouse according to claim 7, characterized in that: the ventilation device (2) also includes a ventilation fan (20) electrically connected to the microcomputer controller (4), the ventilation fan (20 ) is installed on the inside of the ventilation window (18) close to the greenhouse, and is used to discharge the air in the greenhouse from the ventilation window (18).