Floor heating type sunlight greenhouse

Abstract

The utility model provides a floor heating type sunlight greenhouse, which relates to the technical field of agricultural greenhouses and comprises a greenhouse body, a gas-liquid heat exchange device, a heat-conducting liquid storage tank and a liquid pipeline. The liquid pipeline is uniformly buried below soil in the greenhouse body, the gas-liquid heat exchange device and the heat-conducting liquid storage tank are both arranged in the greenhouse body, heat-conducting liquid is stored in the heat-conducting liquid storage tank, the inlet end of the heat-conducting liquid storage tank is communicated with the backflow end of the liquid pipeline, and the outlet end of the heat-conducting liquid storage tank is communicated with the liquid inlet end of the gas-liquid heat exchange device; the liquid outlet end of the gas-liquid heat exchange device communicates with the inflow end of the liquid pipeline and is used for sucking air in the greenhouse body, so that heat exchange is conducted between the air and the heat conduction liquid, and heat is stored in soil through the liquid pipeline. According to the scheme, the temperature in the sunlight greenhouse can be kept relatively constant in a mode of storing heat in the soil, and then a good growth and development environment is provided for plants.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural greenhouses, and particularly relates to a floor heating type solar greenhouse. Background Art

[0002] A greenhouse, also known as a hothouse, is a facility that can transmit light and keep warm for cultivating plants. In seasons when it is not suitable for plant growth, it can provide a growth period and increase yields, and is mostly used for cultivating or raising seedlings of heat-loving vegetables, flowers, forest trees and other plants in low-temperature seasons. A solar greenhouse is a greenhouse that uses solar energy as the main energy source. It stores the heat of sunlight during the day and maintains the temperature required for the growth and development of plants in the greenhouse through strict heat preservation measures at night.

[0003] Currently, solar greenhouses are mainly made up of a rear wall, a rear slope and gable walls on both sides. During the day, sunlight shines into the solar greenhouse, and the greenhouse absorbs solar energy through the soil, the rear wall, the rear slope and the gable walls, and realizes heat preservation to maintain a certain temperature in the greenhouse at night to meet the normal growth needs of plants, vegetables and other crops. However, due to the seasonal climate and the temperature difference between day and night, the temperature in the solar greenhouse often cannot well meet the growth needs of plants. For example, in northern regions, the temperature difference between day and night is relatively large, which causes the temperature in the solar greenhouse to be relatively high during the day, which can meet the growth of plants. Sometimes, the temperature is even too high, and shading is required to cool down the greenhouse. At night, the temperature in the solar greenhouse drops sharply, and it is difficult to maintain the temperature required for the growth and development of plants. Therefore, the existing solar greenhouses are greatly affected by the seasonal climate and the temperature difference between day and night, and it is difficult to ensure the relative constancy of the temperature in the greenhouse, and thus it is also impossible to provide a good growth and development environment for plants. Content of the Utility Model

[0004] In view of this, in view of the above deficiencies, it is necessary to propose a floor heating type solar greenhouse to maintain the relative constancy of the temperature in the solar greenhouse by storing heat in the soil, and thus provide a good growth and development environment for plants.

[0005] The utility model provides a floor heating type solar greenhouse, which includes: a greenhouse body, a gas-liquid heat exchange device, a heat-conducting liquid storage tank and a liquid pipeline; the liquid pipeline is uniformly buried under the soil inside the greenhouse body, the gas-liquid heat exchange device and the heat-conducting liquid storage tank are both arranged inside the greenhouse body, the heat-conducting liquid storage tank stores heat-conducting liquid, its inlet end is communicated with the return end of the liquid pipeline, and the outlet end is communicated with the liquid inlet end of the gas-liquid heat exchange device; the liquid outlet end of the gas-liquid heat exchange device is communicated with the inflow end of the liquid pipeline to suck in the air inside the greenhouse body, so that the air and the heat-conducting liquid perform heat exchange, and the heat is stored in the soil through the liquid pipeline.

[0006] Preferably, the gas-liquid heat exchange device includes a heat exchange component, at least one first fan, and a pressure pump; the first fan is arranged at the air inlet end of the heat exchange component and is used to suck the air inside the greenhouse body into the heat exchange component; the liquid inlet end of the heat exchange component is communicated with the outlet end of the heat-conducting liquid storage tank, the liquid outlet end is communicated with the liquid inlet end of the pressure pump, and the liquid outlet end of the pressure pump is communicated with the inflow end of the liquid pipeline.

[0007] Preferably, a dehumidification device is further arranged at the air outlet end of the heat exchange component, and the air inlet end of the dehumidification device faces the air outlet end of the heat exchange component and is used to dehumidify and dry the wet air discharged from the heat exchange component and then discharge it into the greenhouse body.

[0008] Preferably, a control device and at least one temperature sensor are further arranged inside the greenhouse body, and the gas-liquid heat exchange device and each temperature sensor are electrically connected to the control device; the temperature sensor is used to monitor the air temperature inside the greenhouse body and send the monitoring data to the control device in real time; the control device is used to control the operation of the gas-liquid heat exchange device when the air temperature inside the greenhouse body is greater than the first temperature threshold or less than the second temperature threshold, so as to conduct heat exchange between the air inside the greenhouse body and the heat-conducting liquid in the liquid pipeline.

[0009] Preferably, a humidity sensor is further arranged inside the greenhouse body, and the humidity sensor is electrically connected to the control device and is used to monitor the humidity of the air inside the greenhouse body and send the monitored data to the control device; the control device is further used to control the dehumidification device to be turned on when the gas-liquid heat exchange device is turned on and the air humidity inside the greenhouse body is greater than the preset humidity threshold.

[0010] Preferably, the liquid pipeline is also buried inside the rear wall of the greenhouse body and is communicated with the liquid pipeline buried below the soil.

[0011] Preferably, a number of heating components are further arranged inside the greenhouse body, and each heating component is connected in series to the liquid pipeline, so as to quickly dissipate the heat stored inside the soil into the air through the heating component when the air temperature inside the greenhouse body is relatively low.

[0012] Preferably, a control valve is arranged at each heating component and is used to adjust whether the heat-conducting liquid flows through the heating component.

[0013] Preferably, a number of second fans are further arranged on the steel frame of the greenhouse body to accelerate the air circulation inside the greenhouse body.

[0014] Preferably, the gas-liquid heat exchange device is an air source heat pump.

[0015] As can be seen from the above technical solutions, the ground heating type solar greenhouse provided by the embodiment of the present utility model includes a greenhouse body, a gas-liquid heat exchange device, a heat-conducting liquid storage tank, and a liquid pipeline. The liquid pipeline is buried below the soil inside the greenhouse body. The gas-liquid heat exchange device can suck the air inside the greenhouse body and then cause heat exchange between the air and the heat-conducting liquid in the pipeline. In this way, when the temperature inside the greenhouse body is relatively high, the gas-liquid heat exchange device can exchange the heat in the relatively high-temperature air to the heat-conducting liquid and store it in the soil through the heat-conducting liquid, while appropriately reducing the temperature inside the greenhouse body and realizing heat storage. When the temperature inside the greenhouse body is relatively low, the gas-liquid heat exchange device can exchange the heat of the relatively high-temperature heat-conducting liquid to the relatively low-temperature air, thereby increasing the temperature inside the greenhouse body. It can be seen that the ground heating type solar greenhouse provided by this solution can keep the temperature inside the solar greenhouse relatively constant, thereby providing a good growth and development environment for plants. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of a ground heating type solar greenhouse provided by an embodiment of the present utility model.

[0017] Figure 2 It is a schematic diagram of the ground heating type solar greenhouse from another perspective provided by an embodiment of the present utility model.

[0018] Figure 3 It is a schematic diagram of a gas-liquid heat exchange device provided by an embodiment of the present utility model.

[0019] Figure 4 It is a schematic diagram of a heating component provided by an embodiment of the present utility model.

[0020] In the figure: greenhouse body 10, rear wall 11, steel frame 12, gas-liquid heat exchange device 20, heat exchange component 21, first fan 22, pressure pump 23, heat-conducting liquid storage tank 30, liquid pipeline 40, heating component 50, control valve 60, second fan 70, dehumidification device 80. Detailed Embodiments

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] See Figures 1-4, an embodiment of the present utility model provides a ground heating type solar greenhouse, comprising: a greenhouse body 10, a gas-liquid heat exchange device 20, a heat-conducting liquid storage tank 30, and a liquid pipeline 40; the liquid pipeline 40 is uniformly buried under the soil inside the greenhouse body 10, the gas-liquid heat exchange device 20 and the heat-conducting liquid storage tank 30 are both arranged inside the greenhouse body 10, the heat-conducting liquid storage tank 30 stores heat-conducting liquid, its inlet end is communicated with the return end of the liquid pipeline 40, and the outlet end is communicated with the liquid inlet end of the gas-liquid heat exchange device 20; the liquid outlet end of the gas-liquid heat exchange device 20 is communicated with the inflow end of the liquid pipeline 40, so as to suck the air inside the greenhouse body 10, enable the air and the heat-conducting liquid to perform heat exchange, and store the heat in the soil through the liquid pipeline 40.

[0023] Due to the temperature difference changes between seasons and day and night, the temperature inside the greenhouse varies greatly. For example, in areas and seasons with large day-night temperature differences, when the temperature is high during the day, the temperature inside the greenhouse may be too high, exceeding the growth and development requirements of plants. Therefore, sometimes it is necessary to appropriately reduce the temperature inside the greenhouse by means of shading, etc. And at night, the temperature inside the greenhouse drops sharply, and the temperature inside the greenhouse often cannot meet the growth and development requirements of plants. In the ground heating type solar greenhouse provided by the present application, the liquid pipeline 40 is buried under the soil, and the gas-liquid heat exchange device 20 can realize the heat exchange between gas and liquid. In this way, when the air temperature inside the greenhouse is high during the day, the gas-liquid heat exchange device 20 can suck air from inside the greenhouse, enable the relatively high-temperature air to exchange heat with the relatively low-temperature heat-conducting liquid, increase the temperature of the heat-conducting liquid, and then store the heat in the soil. This not only appropriately reduces the air temperature in the greenhouse and does not require reducing the temperature in the greenhouse by means of shading, etc., but also converts and stores the sufficient solar heat during the day in the soil, improving the utilization rate of solar energy while being able to increase the temperature of the soil, and thus promoting the growth of the roots of plants. And at night when the air temperature inside the greenhouse is low, since the specific heat capacities of the soil and the heat-conducting liquid are larger than that of the air, and thus have a higher temperature, at this time the gas-liquid heat exchange device 20 can suck air from inside the greenhouse, enable the relatively high-temperature heat-conducting liquid to exchange heat with the relatively low-temperature air, increase the air temperature, and then increase the environmental temperature inside the greenhouse. Thus, through this solution, not only can the solar energy during the day be fully utilized, but also the greenhouse environment can be maintained at a relatively constant temperature, so that plants have a good growth environment.

[0024] Specifically, the gas-liquid heat exchange device 20 may include a heat exchange component 21, at least one first fan 22, and a pressure pump 23; the first fan 22 is arranged at the air inlet end of the heat exchange component 21 and is used to suck the air inside the greenhouse body 10 into the heat exchange component 21; the liquid inlet end of the heat exchange component 21 is communicated with the outlet end of the heat-conducting liquid storage tank 30, the liquid outlet end is communicated with the liquid inlet end of the pressure pump 23, and the liquid outlet end of the pressure pump 23 is communicated with the inflow end of the liquid pipeline 40. In this embodiment, the heat exchange component 21 can generate heat by compressing air to do work and exchange the heat to the heat-conducting liquid. By arranging a plurality of fans, the air inside the greenhouse can be quickly sucked into the heat exchange component 21, increasing the air inflow, and thus improving the heat exchange efficiency.

[0025] Since transpiration occurs in the plants inside the greenhouse, the air inside the greenhouse is relatively humid, and humid air is prone to diseases. Especially in a low-temperature and high-humidity environment, plants are very likely to suffer from low-temperature and high-humidity diseases. Therefore, in one embodiment, a dehumidifying device 80 is further arranged at the air outlet end of the heat exchange component 21. The air inlet end of the dehumidifying device 80 faces the air outlet end of the heat exchange component 21 and is used to dehumidify and dry the wet air discharged from the heat exchange component 21 and then discharge it into the greenhouse body 10. In this embodiment, since humid air is beneficial to improving the gas-liquid heat exchange efficiency and the air flow rate at the air outlet of the gas-liquid heat exchange device 20 is relatively large, it is considered to arrange the dehumidifying device 80 at the air outlet end of the gas-liquid heat exchange device 20. In this way, it not only does not affect the heat exchange efficiency of the gas-liquid heat exchange device 20, but also enables a larger air flow rate to enter the dehumidifying device 80, thus having a greater dehumidifying efficiency.

[0026] In one embodiment, a control device and at least one temperature sensor are further arranged inside the greenhouse body 10. The gas-liquid heat exchange device 20 and each temperature sensor are electrically connected to the control device; the temperature sensor is used to monitor the air temperature inside the greenhouse body 10 and send the monitoring data to the control device in real time; the control device is used to control the operation of the gas-liquid heat exchange device 20 when the air temperature inside the greenhouse body 10 is greater than the first temperature threshold or less than the second temperature threshold, so as to conduct heat exchange between the air inside the greenhouse body 10 and the heat-conducting liquid in the liquid pipeline 40.

[0027] Among them, the first temperature threshold is greater than the second temperature threshold. The first temperature threshold is used to turn on the gas-liquid heat exchange device 20 when the greenhouse air temperature is relatively high during the day, so as to store the air temperature in the soil after heat exchange. The second temperature threshold is used to turn on the gas-liquid heat exchange device 20 when the air temperature is relatively low at night, so as to exchange the temperature of the heat-conducting liquid and the soil into the air, thereby increasing the environmental temperature of the greenhouse. In this way, through environmental temperature monitoring, the control device can adjust according to the detected temperature to ensure the relative constancy of the greenhouse temperature. Of course, it should be noted that the control device should also control the gas-liquid heat exchange device 20 to close when a certain temperature is reached. For example, when the gas-liquid heat exchange efficiency is very low at this temperature value, the gas-liquid heat exchange device 20 should be closed to avoid unnecessary energy waste.

[0028] Of course, a humidity sensor can also be provided inside the greenhouse body 10. The humidity sensor is electrically connected to the control device and is used to monitor the humidity of the air inside the greenhouse body 10 and send the monitored data to the control device. The control device is also used to control the dehumidification device 80 to turn on when the gas-liquid heat exchange device 20 is turned on and the air humidity inside the greenhouse body 10 is greater than the preset humidity threshold. In this way, it is possible to determine whether it is necessary to turn on the dehumidification device 80 according to the detected humidity in the greenhouse, which can not only ensure a good humidity environment inside the greenhouse, but also save energy consumption.

[0029] In addition, in order to improve the heat storage efficiency of the greenhouse, this solution also considers burying a liquid pipeline 40 inside the rear wall 11 of the greenhouse body 10, and connecting it to the liquid pipeline 40 buried under the soil. In this way, not only can heat be stored in the soil, but the rear wall 11 of the greenhouse can also store heat, increasing the heat storage area and thus increasing the heat storage capacity.

[0030] When the environmental temperature is relatively low at night, in order to quickly dissipate the heat stored during the day into the air, it is also considered to provide a number of heating components 50 inside the greenhouse body 10, and each heating component 50 is connected in series to the liquid pipeline 40, so as to quickly dissipate the heat stored inside the soil into the air through the heating component 50 when the air temperature inside the greenhouse body 10 is relatively low. In this way, at night, the heat dissipation is accelerated through the heating component 50 to quickly increase the environmental temperature inside the greenhouse.

[0031] Of course, since the heating component 50 is connected in series to the liquid pipeline 40, in order to ensure the normal circulation of the heat-conducting liquid in the liquid pipeline 40, a control valve 60 should also be provided at each heating component 50 to regulate whether the heat-conducting liquid flows through the heating component 50. For example, when it is necessary to quickly increase the environmental temperature at night, the control valve 60 can be opened to allow the heat-conducting liquid to flow through the heating component 50, so that the heat can be quickly dissipated into the air through the heating component 50.

[0032] In addition, in order to accelerate the air circulation inside the greenhouse body 10, a plurality of second fans 70 can be provided on the steel frame 12 of the greenhouse body 10.

[0033] In one embodiment, the gas-liquid heat exchange device 20 of this solution can be an air source heat pump, and the heat-conducting liquid can be water or a mixture of water and a heat-conducting medium.

[0034] The modules or units in the device of the embodiment of the present utility model can be combined, divided, and deleted according to actual needs. The foregoing disclosure is only a preferred embodiment of the present utility model, and of course it cannot be used to limit the scope of rights of the present utility model. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present utility model still fall within the scope covered by the present utility model.

Claims

1. A floor heating type solar greenhouse, characterized in that, Including: A greenhouse body, a gas-liquid heat exchange device, a heat-conducting liquid storage tank, and a liquid pipeline; the liquid pipeline is uniformly buried under the soil inside the greenhouse body, the gas-liquid heat exchange device and the heat-conducting liquid storage tank are both arranged inside the greenhouse body, the heat-conducting liquid storage tank stores heat-conducting liquid, its inlet end is communicated with the return end of the liquid pipeline, and the outlet end is communicated with the liquid inlet end of the gas-liquid heat exchange device; the liquid outlet end of the gas-liquid heat exchange device is communicated with the inflow end of the liquid pipeline to suck in the air inside the greenhouse body, so that the air and the heat-conducting liquid perform heat exchange, and the heat is stored in the soil through the liquid pipeline.

2. The floor heating type solar greenhouse according to claim 1, wherein The gas-liquid heat exchange device includes a heat exchange component, at least one first fan, and a pressure pump; the first fan is arranged at the air inlet end of the heat exchange component and is used to suck the air inside the greenhouse body into the heat exchange component; The liquid inlet end of the heat exchange component is communicated with the outlet end of the heat-conducting liquid storage tank, the liquid outlet end is communicated with the liquid inlet end of the pressure pump, and the liquid outlet end of the pressure pump is communicated with the inflow end of the liquid pipeline.

3. The ground heating type solar greenhouse according to claim 2, wherein, A dehumidifying device is further arranged at the air outlet end of the heat exchange component, and the air inlet end of the dehumidifying device faces the air outlet end of the heat exchange component and is used to dehumidify and dry the wet air discharged from the heat exchange component and then discharge it into the greenhouse body.

4. The ground heating type solar greenhouse according to claim 3, characterized in that, A control device and at least one temperature sensor are further arranged inside the greenhouse body, and the gas-liquid heat exchange device and each temperature sensor are electrically connected to the control device; the temperature sensor is used to monitor the air temperature inside the greenhouse body and send the monitoring data to the control device in real time; the control device is used to control the operation of the gas-liquid heat exchange device when the air temperature inside the greenhouse body is greater than a first temperature threshold or less than a second temperature threshold, so as to perform heat exchange between the air inside the greenhouse body and the heat-conducting liquid in the liquid pipeline.

5. The floor heating type sunlight greenhouse according to claim 4, characterized in that, A humidity sensor is further arranged inside the greenhouse body, and the humidity sensor is electrically connected to the control device and is used to monitor the humidity of the air inside the greenhouse body and send the monitored data to the control device; the control device is further used to control the dehumidifying device to start when the gas-liquid heat exchange device is started and the air humidity inside the greenhouse body is greater than a preset humidity threshold.

6. The floor heating type solar greenhouse according to claim 1, characterized in that, The liquid pipeline is also buried inside the rear wall of the greenhouse body and is communicated with the liquid pipeline buried under the soil.

7. The floor heating type solar greenhouse according to claim 1, characterized in that, A number of heating components are further arranged inside the greenhouse body, and each heating component is connected in series to the liquid pipeline to quickly dissipate the heat stored inside the soil into the air through the heating component when the air temperature inside the greenhouse body is relatively low.

8. The floor heating type solar greenhouse according to claim 7, characterized in that, A control valve is arranged at each heating component to regulate whether the heat-conducting liquid flows through the heating component.

9. The floor heating type solar greenhouse according to claim 1, characterized in that, A number of second fans are further arranged on the steel frame of the greenhouse body to accelerate the air circulation inside the greenhouse body.

10. The floor heating type sunlight greenhouse according to any one of claims 1 to 9, characterized in that, The gas-liquid heat exchange device is an air source heat pump.

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