Greenhouse heating system
By installing heat collection covers and cooling fans inside the greenhouse, combined with solar energy and electric heating systems, the problem of uneven heating in the greenhouse has been solved, achieving uniform temperature distribution and automated heating, thus preventing crop yield reduction.
Patent Information
- Application Number
- CN202423104139.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-16
AI Technical Summary
Uneven heating in greenhouses can lead to slow crop growth or reduced yields, especially in areas far from radiators where temperatures are lower, thus affecting crop growth.
Heat collection covers and cooling fans are installed inside the greenhouse. Combined with solar collectors, hot water storage tanks, electric heating tubes and circulating water pumps, the heating system is controlled by a controller. The cooling fans accelerate airflow to ensure uniform temperature distribution and automatically start heating when the temperature is low.
It achieves uniform temperature distribution within the greenhouse, prevents crop yield reduction due to excessively low temperatures, and improves the automation and applicability of heating.
Smart Images
Figure CN223503479U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of agricultural facilities, concretely is a greenhouse heating system. BACKGROUND
[0002] In most areas of northern China, the outdoor temperature in winter is usually below 0 DEG C, but the solar energy resources are rich, and the temperature in the greenhouse facility can be maintained above 10 DEG C by relying on the radiation of sunlight, the facility agriculture greenhouse in most areas of northern China relies on the radiation of sunlight to improve the air temperature in the greenhouse in daytime in winter, and relies on boiler, solar heat storage, air energy heat pump, electric heating and other heating equipment as heat source to heat the greenhouse at night, to ensure that the temperature in the greenhouse meets the needs of crop growth. With the requirements of environmental protection and the development of facility agriculture, the boiler heating is gradually eliminated. As the main way of greenhouse heating in winter, the solar energy and electric heating equipment are combined to heat the circulating water, and then the hot water is delivered to the radiator (heating coil) in the greenhouse to heat the greenhouse, which is a new water heating heating way. The greenhouse generally does not need heating in daytime, the solar energy system stores heat in daytime, and the heat is stored for use at night, if it is snowing or cloudy, the electric heating mode is switched to heat the greenhouse, so as to ensure that the temperature in the greenhouse is maintained at the temperature of plant growth. However, this kind of greenhouse heating mode has the following problems: the radiator is usually installed on the south wall side of the greenhouse, and the heating will cause the temperature of the area far away from the south wall side of the greenhouse to be low, which leads to slow growth of crops in the area, and some crops with poor resistance even stop growing, finally resulting in yield reduction of greenhouse products. Therefore, it is necessary to design a greenhouse heating system which can uniformly heat and prevent crops from reducing yield due to temperature influence. CONTENT OF THE UTILITY MODEL
[0003] In view of the above technical problems, the utility model provides a greenhouse heating system which can uniformly heat and prevent crops from reducing yield due to temperature influence, to solve the problem of yield reduction of greenhouse crops caused by uneven heating.
[0004] To solve the above technical problems, the technical scheme of the utility model is: a greenhouse heating system, including greenhouse, heating mechanism, radiator, the radiator is fixedly connected with the greenhouse inner wall downside, the heating mechanism and the radiator are connected through the pipeline, the heating mechanism includes solar energy collector, heat storage water tank, electric heating pipe, auxiliary water tank, circulating water pump, the solar energy collector is connected with the heat storage water tank through the pipeline, the electric heating pipe is fixedly connected in the auxiliary water tank, the radiator input end is connected with the heat storage water tank, auxiliary water tank through liquid supply pipeline respectively, and the output end is connected with the heat storage water tank, auxiliary water tank's liquid return interface through liquid return pipeline respectively, the circulating water pump is installed on the liquid supply pipeline, the heat storage water tank and the circulating water pump between installation have first solenoid valve, the auxiliary water tank and the circulating water pump between installation have second solenoid valve, the heat storage water tank, auxiliary water tank's liquid return interface is installed third solenoid valve, fourth solenoid valve respectively, the heat storage water tank, auxiliary water tank in fixedly connected with first temperature sensor, second temperature sensor respectively, first temperature sensor, second temperature sensor all with controller communication connection, first solenoid valve, second solenoid valve, third solenoid valve, fourth solenoid valve, electric heating pipe all are controlled to the controller;
[0005] The radiator outside cover is provided with a heat collecting cover, a heat dissipation fan is installed on the outside of the heat collecting cover, and the output end of the heat dissipation fan faces the inside of the greenhouse.
[0006] Further, the control box is fixedly connected in the greenhouse, and the controller is installed in the control box.
[0007] Further, the third temperature sensor is installed in the greenhouse, and the third temperature sensor is in communication connection with the controller.
[0008] Compared with the prior art, the utility model has the following advantages:
[0009] 1. The utility model discloses a heat collecting cover is covered on the radiator in the greenhouse, and a heat dissipation fan is installed on the heat collecting cover, so that the heat of the radiator can be blown out through the heat dissipation fan, the airflow in the greenhouse is accelerated, the temperature distribution in the greenhouse is more uniform when heating, and the problem that the temperature of the area far away from the radiator in the greenhouse is too low, thereby affecting the growth of crops and causing the yield reduction of crops in the greenhouse, is avoided.
[0010] 2. The utility model discloses a third temperature sensor is installed in the greenhouse to detect the temperature in the greenhouse, when the temperature is too low, the controller is automatically started to heat, the crops in the greenhouse are heated, the situation that the crops in the greenhouse are frozen due to the negligence of personnel is avoided, and the applicability of the system is improved.BRIEF DESCRIPTION OF DRAWINGS BRIEF DESCRIPTION OF DRAWINGS
[0011] Fig. 1 It is the structure schematic view of greenhouse big shed in the utility model.
[0012] Fig. 2 It is the structure schematic side view of the utility model.
[0013] Fig. 3 It is the connecting structure schematic view of the heat supply mechanism of the utility model.
[0014] In the drawing: 1, greenhouse big shed, 2, radiator, 3, solar heat collector, 4, heat storage water tank, 5, electric heating pipe, 6, auxiliary heat water tank, 7, circulating water pump, 8, liquid supply pipeline, 9, liquid return pipeline, 10, first electromagnetic valve, 11, second electromagnetic valve, 12, third electromagnetic valve, 13, fourth electromagnetic valve, 14, first temperature sensor, 15, second temperature sensor, 16, heat collection cover, 17, heat dissipation fan, 18, third temperature sensor, 19, control box. DETAILED DESCRIPTION
[0015] The utility model will be described further below in combination with the drawings.
[0016] As Figs. 1 to 3 shown, a kind of greenhouse heating system, including greenhouse big shed 1, heat supply mechanism, radiator 2, radiator 2 is fixedly connected in the lower side of greenhouse big shed 1 inner wall, heat supply mechanism is connected with radiator 2 between by pipeline, and heat supply mechanism includes solar heat collector 3, heat storage water tank 4, electric heating pipe 5, auxiliary heat water tank 6, circulating water pump 7, solar heat collector 3 is connected with heat storage water tank 4 by pipeline, solar heat collector 3 is heated by sunlight in daytime, and the water in heat storage water tank 4 is constantly heated, electric heating pipe 5 is fixedly connected in auxiliary heat water tank 6, and the water in auxiliary heat water tank 6 is heated by electric heating pipe 5, as the auxiliary heating medium of water heating, the input end of radiator 2 is connected with heat storage water tank 4, auxiliary heat water tank 6 respectively by liquid supply pipeline 8, and the output end is connected with the liquid return interface of heat storage water tank 4, auxiliary heat water tank 6 respectively by liquid return pipeline 9, circulating water pump 7 is installed on liquid supply pipeline 8, and first electromagnetic valve 10 is installed between heat storage water tank 4 and circulating water pump 7, second electromagnetic valve 11 is installed between auxiliary heat water tank 6 and circulating water pump 7, third electromagnetic valve 12, fourth electromagnetic valve 13 are installed on the liquid return interface of heat storage water tank 4, auxiliary heat water tank 6 respectively, first temperature sensor 14, second temperature sensor 15 are fixedly connected in heat storage water tank 4, auxiliary heat water tank 6 respectively, first temperature sensor 14, second temperature sensor 15 are all connected with controller, and first electromagnetic valve 10, second electromagnetic valve 11, third electromagnetic valve 12, fourth electromagnetic valve 13, electric heating pipe 5 are all controlled by controller;
[0017] The radiator 2 is covered with a heat collection cover 16. The upper and lower sides of the heat collection cover 16 are detachably connected to the inner wall of the greenhouse 1 by bolts. A cooling fan 17 is installed on the outside of the heat collection cover 16. The output end of the cooling fan 17 faces the inside of the greenhouse 1. The circulating water pump 7 and the cooling fan 17 are both controlled by the controller.
[0018] To facilitate the installation and protection of the controller, a control box 19 is fixedly connected inside the greenhouse 1, and the controller is installed inside the control box 19.
[0019] To prevent the heating system from being left unused due to human negligence and to avoid the crops inside greenhouse 1 from freezing, a third temperature sensor 18 is installed inside greenhouse 1. The third temperature sensor 18 is connected to the controller. When the controller receives the temperature value signal detected by the third temperature sensor 18, if the temperature value is lower than the set lower limit, the controller controls the cooling fan 17 and the circulating water pump 7 to start, and work with the heating system to heat the inside of greenhouse 1.
[0020] The specific working process of this utility model is as follows:
[0021] During the day, the solar collector 3 uses sunlight to store heat, continuously raising the temperature of the water in the hot water storage tank 4. At night or in cold weather when the greenhouse 1 needs heating, the operator starts the circulating water pump 7 and the radiator fan 17 via the controller to provide heating to the greenhouse 1. At this time, the second solenoid valve 11 and the fourth solenoid valve 13 are closed, and the first solenoid valve 10 and the third solenoid valve 12 are open. The water supply pipe 8 is connected to the hot water storage tank 4, and hot water is delivered to the radiator 2 for heating under the action of the circulating water pump 7. The heating hot water enters the radiator 2 from the hot water storage tank 4, circulates once, and then returns to the hot water storage tank 4. The first temperature sensor 14 monitors the water temperature in the hot water storage tank 4 in real time and transmits the temperature data signal to the controller. When the controller receives the temperature signal value from the first temperature sensor 14 and it is lower than the set value, the controller controls the electric heating tube 5 to turn on. The system heats the water in the auxiliary hot water tank 6, while the second temperature sensor 15 monitors the water temperature in the auxiliary hot water tank 6 in real time and transmits the temperature data signal to the controller. When the controller receives the temperature signal value from the second temperature sensor 15 and it reaches the set value, the controller controls the second solenoid valve 11 and the fourth solenoid valve 13 to open, and at the same time controls the first solenoid valve 10 and the third solenoid valve 12 to close. At this time, the water supply pipe 8 is connected to the auxiliary hot water tank 6, and the electric heating tube 5 in the auxiliary hot water tank 6 becomes the heat source. The heating hot water enters the radiator 2 from the auxiliary hot water tank 6, circulates once, and then returns to the auxiliary hot water tank 6. During this period, the controller continuously opens and closes the electric heating tube 5 according to the temperature value corresponding to the temperature signal detected by the second temperature sensor 15, so as to keep the water temperature in the auxiliary hot water tank 6 at a range not lower than the set value until the operator turns off the heating.
[0022] During heating, the cooling fan 17 rotates, continuously blowing out the hot air from the heat collection cover 16, accelerating the airflow inside the greenhouse 1, and making the temperature distribution inside the greenhouse 1 uniform.
Claims
1. A greenhouse heating system, comprising a greenhouse (1), a heating mechanism, and a radiator (2), wherein the radiator (2) is fixedly connected to the lower side of the inner wall of the greenhouse (1), and the heating mechanism and the radiator (2) are connected by a pipe, characterized in that: The heating system includes a solar collector (3), a hot water storage tank (4), an electric heating element (5), an auxiliary hot water tank (6), and a circulating water pump (7). The solar collector (3) is connected to the hot water storage tank (4) via a pipe. The electric heating element (5) is fixedly connected inside the auxiliary hot water tank (6). The input end of the radiator (2) is connected to the hot water storage tank (4) and the auxiliary hot water tank (6) via a liquid supply pipe (8), and the output end is connected to the return liquid interface of the hot water storage tank (4) and the auxiliary hot water tank (6) via a return liquid pipe (9). The circulating water pump (7) is installed on the liquid supply pipe (8). A connection is installed between the hot water storage tank (4) and the circulating water pump (7). There is a first solenoid valve (10), a second solenoid valve (11) is installed between the auxiliary hot water tank (6) and the circulating water pump (7), a third solenoid valve (12) and a fourth solenoid valve (13) are respectively installed on the return liquid interface of the hot water storage tank (4) and the auxiliary hot water tank (6), a first temperature sensor (14) and a second temperature sensor (15) are respectively fixedly connected in the hot water storage tank (4) and the auxiliary hot water tank (6), the first temperature sensor (14) and the second temperature sensor (15) are both connected to the controller, and the first solenoid valve (10), the second solenoid valve (11), the third solenoid valve (12), the fourth solenoid valve (13) and the electric heating tube (5) are all controlled by the controller; The heat sink (2) is covered with a heat collection cover (16), and a cooling fan (17) is installed on the outside of the heat collection cover (16). The output end of the cooling fan (17) faces the inside of the greenhouse (1). The circulating water pump (7) and the cooling fan (17) are both controlled by the controller.
2. The greenhouse heating system according to claim 1, characterized in that: A control box (19) is fixedly connected inside the greenhouse (1), and the controller is installed inside the control box (19).
3. The greenhouse heating system according to claim 1, characterized in that: A third temperature sensor (18) is installed inside the greenhouse (1), and the third temperature sensor (18) is connected to the controller in communication.