Plant capable of simulating natural temperature and humidity curve change

Abstract

The utility model relates to a plant simulating natural temperature and humidity curve change, which comprises a plant main body and a circulating air loop, the circulating air loop comprises an air inlet frequency conversion fan, an air exhaust frequency conversion fan, a temperature and humidity sensor, an air sensor, a Venturi tube, an air inlet tube, a controller, a first connecting tube group and a second connecting tube group; as the air outlets of the air inlet frequency conversion fan and the air exhaust frequency conversion fan are respectively connected with the temperature and humidity sensor and the air sensor, the rotating speeds of the air inlet frequency conversion fan and the air exhaust frequency conversion fan are controlled by calculating detected data, and the energy consumption can be further reduced; besides, external air under the action of atmospheric pressure can enter the first connecting pipe group through the air inlet pipe and the Venturi effect pipe, is mixed with air in the circulating air loop and then enters a room, and a pipeline part in the circulating air loop is buried in the soil, so that the specific heat capacity of the soil is larger than that of the air; the indoor temperature can be effectively adjusted while indoor air circulation is achieved and the air state is adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of plant cultivation, in particular to a plant building which simulates the change of natural temperature and humidity curve. Background Art

[0002] Suitable temperature, humidity and air (oxygen concentration and carbon dioxide concentration) environment play a vital role in the growth of plants (such as vegetables) and edible fungi. In today's limited land resources, factory planting has become a new planting model, which mainly creates an environment suitable for plant growth indoors through artificial intervention, and temperature, humidity and air conditioning are one of the important links. The existing environmental regulation technology for factory cultivation mainly regulates the temperature, humidity, oxygen concentration and carbon dioxide concentration in the cultivation room through the fresh air system and air conditioning compressor. This regulation method has a big disadvantage: when the indoor temperature, humidity, oxygen concentration and carbon dioxide concentration need to be adjusted, the fresh air system will cause a sudden change in indoor temperature, humidity, oxygen concentration and carbon dioxide concentration when sending outdoor air into the room through heat exchange. This is extremely unfavorable for the growth of some plants and edible fungi that are sensitive to changes in temperature, humidity, oxygen concentration and carbon dioxide concentration, especially for edible fungi. The mutation will cause the edible fungi to stop growing prematurely and reduce the yield. Utility Model Content

[0003] In order to solve the above problems in the prior art, the utility model provides a plant that simulates the changes in natural temperature and humidity curves, ensuring that the indoor temperature and humidity as well as the oxygen concentration and carbon dioxide concentration change slowly and naturally, thereby being suitable for plant growth.

[0004] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include: a plant that simulates the change of natural temperature and humidity curve, including a plant body and a circulating air circuit, wherein the circulating air circuit includes an air intake variable frequency fan, an air exhaust variable frequency fan, a temperature and humidity sensor, an air sensor, a venturi tube, an air intake pipe, a controller, a first connecting pipe group and a second connecting pipe group;

[0005] The air intake variable frequency fan and the air exhaust variable frequency fan are respectively arranged on the two opposite inner side walls of the main body of the factory building, and the air outlets of the air intake variable frequency fan and the air exhaust variable frequency fan are respectively connected to the temperature and humidity sensor and the air sensor. The controller is electrically connected to the temperature and humidity sensor, the air sensor, the air intake variable frequency fan (5) and the air exhaust variable frequency fan (6) respectively. One end of the first connecting pipe group is connected to the air intake variable frequency fan. The venturi tube is arranged in the soil. The inlet and exhaust ports of the venturi tube are respectively connected to the other end of the first connecting pipe group and one end of the second connecting pipe group. The other end of the second connecting pipe group passes through the soil and is connected to the air exhaust variable frequency fan. One end of the air intake pipe is connected to the throat of the venturi tube and is connected to the inside of the venturi tube. The other end of the air intake pipe passes through the soil and is connected to the outside air.

[0006] The beneficial effects of the utility model are:

[0007] 1. Since the air outlets of the air intake variable frequency fan and the air exhaust variable frequency fan are respectively connected with temperature and humidity sensors and air sensors, the indoor temperature and humidity and air conditions (carbon dioxide concentration and oxygen concentration) as well as the temperature and humidity and air conditions mixed with the outside air entering the room can be detected. The controller can receive the collected detection data and perform difference calculation based on the detection data to control the speed of the air intake variable frequency fan and the air exhaust variable frequency fan, which can achieve stepless speed change and thus reduce energy consumption;

[0008] 2. The air drawn from the room passes through the Venturi tube. According to Bernoulli's principle, the fluid with a large flow rate has a small pressure on one side. Therefore, when the air passes through the throat of the Venturi effect tube, the flow rate increases and the pressure decreases. Under the action of atmospheric pressure, the outside air can enter the first connecting pipe group through the air inlet pipe and the Venturi effect tube, mix with the air in the circulating air loop and then enter the room. The pipe part in the circulating air loop is buried in the soil (the burial depth can be set according to the specific heat exchange requirements). The specific heat capacity of the soil is greater than that of the air. In summer, the soil temperature is lower than the air temperature. At the same time, the plants need to cool down in summer (relative to the outside air temperature). In winter, on the contrary, it can effectively adjust the indoor temperature while achieving indoor air circulation and adjusting the air state. In addition, when the relative concentration of a certain gas (such as carbon dioxide) needs to be increased indoors, it is only necessary to pass the gas (carbon dioxide) into the pipeline through the Venturi tube and mix it with the gas in the pipeline and enter the room to increase the relative concentration of the corresponding gas in the room. Compared with the traditional three-way connection method to mix the outside air with the air in the pipe, the use of the Venturi tube can more efficiently inhale the outside air and mix it with the gas in the pipe. At the same time, because the flow rate at the throat of the Venturi tube is faster, the mixing efficiency of the outside air and the air in the pipe can be higher and more uniform. Compared with the prior art of using an air control chamber to pre-treat the air before sending it into the room, this solution uses a Venturi pipe plus an underground buried pipe. There is no need to occupy additional ground space to build an air control chamber, which can effectively reduce the occupation of ground land and save land resources. At the same time, because the outside air enters the underground pipeline through the Venturi tube, it mixes with the air in the pipeline, flows in the pipeline, and is directly sent into the room after pre-treatment such as heat exchange, further improving the indoor air renewal efficiency.

[0009] Preferably, the circulating air circuit further includes a coil, and one end of the second connecting pipe group is connected to one end of the three-way pipe through the coil.

[0010] Based on the above description, by arranging a coil in the circulating air loop and positioning the coil in the soil, the air flow distance in the pipe can be increased, so that the circulating air loop can fully exchange heat with the soil.

[0011] Preferably, it also includes an exhaust pipe, a first solenoid valve, a second solenoid valve and a three-way pipe;

[0012] The three-way pipe is arranged on the first connecting pipe group, one end of the exhaust pipe is connected to the port of the three-way pipe, and the other end of the exhaust pipe is exposed to the air, the first solenoid valve is arranged on the exhaust pipe, and the second solenoid valve is arranged on the first connecting pipe group, and the position of the three-way pipe on the first connecting pipe group is between the air intake variable frequency fan and the second solenoid valve.

[0013] Based on the above description, in the default state, the first solenoid valve is in the closed state and the second solenoid valve is in the open state. The circulating air circuit continuously inputs gas mixed with outdoor air into the indoor space. When the indoor space needs to be exhausted quickly, it is only necessary to open the first solenoid valve on the exhaust pipe and close the second solenoid valve on the first connecting pipe group to realize separate indoor and outdoor air passages and quickly exhaust the indoor air. After exhausting the indoor air, the first solenoid valve and the second solenoid valve are operated to restore to the default state.

[0014] Preferably, the circulating air circuit further includes an air pressure sensor;

[0015] Based on the above description, the air pressure sensor is arranged in the main body of the factory building, and the controller is electrically connected to the air pressure sensor, the first solenoid valve and the second solenoid valve respectively.

[0016] When the air pressure sensor detects that the indoor air pressure needs to be ventilated, it will control the switch of the first solenoid valve and the second solenoid valve to cooperate and discharge the indoor gas in real time to adjust the indoor air pressure level.

[0017] Preferably, a mesh cover is provided at the other end of the air inlet pipe.

[0018] Based on the above description, the air intake pipe is equipped with an insect-proof cover to prevent foreign insects and other debris from being brought into the indoor environment when the air is inhaled, thereby keeping the indoor environment clean and tidy.

[0019] Preferably, there are two circulating air circuits, and the air intake variable frequency fans in the two circulating air circuits are respectively arranged at the lower part of the two opposite inner side walls of the factory building body near the corners, and the air exhaust variable frequency fans in the two circulating air circuits are respectively arranged at the upper part of the two opposite inner side walls of the factory building body near the corners.

[0020] Based on the above description, the position design of the above-mentioned variable frequency fan adopts diagonal cross air supply, which can increase the exchange distance of indoor gas and solve the problem of dead angle of air supply. In addition, the mixed gas entering the room through the air intake variable frequency fan can be fully integrated with the indoor gas itself, and can also improve the renewal efficiency of indoor air circulation to more quickly reach a temperature and humidity environment suitable for crop growth. At the same time, since indoor planting is mostly three-dimensional planting, there are certain differences in temperature and humidity at different positions in the three-dimensional space. In order to make the temperature and humidity and other conditions of plant growth at different positions close, maintain the consistency of temperature and humidity and other environments at different positions and improve the consistency of plant growth cycle, diagonal cross air supply is adopted. Moreover, the design of two circulating air loops can further improve the indoor air circulation effect.

[0021] Preferably, the pipe portion of the circulating air loop exposed to the air is provided with a heat-insulating member, and the pipe portion of the circulating air loop buried in the soil is made of metal.

[0022] Based on the above description, the thermal insulation effect of the pipe part of the circulating air loop exposed to the air can be improved, and the heat exchange effect between the air in the circulating air loop and the outside air can be reduced. The metal material used for the buried part can quickly exchange heat with the soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a perspective view of a plant that simulates the natural temperature and humidity curve changes of the utility model;

[0024] Figure 2 This is a schematic diagram of the external structure of a plant that simulates the natural temperature and humidity curve changes of the utility model;

[0025] Figure 3 for Figure 2 Detailed view of part A;

[0026] Description of reference numerals:

[0027] 1. The main body of the factory building; 2. The first connecting pipe group; 3. The second connecting pipe group; 4. The coil; 5. The air intake variable frequency fan; 6. The air exhaust variable frequency fan; 7. The exhaust pipe; 8. The air intake pipe; 9. The Venturi tube; 10. The air pressure sensor; 11. The three-way pipe; 12. The first solenoid valve; 13. The second solenoid valve; 14. The mesh cover. DETAILED DESCRIPTION

[0028] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0029] Embodiment 1

[0030] Please refer to Figures 1 to 3 As shown, a plant simulating the change of natural temperature and humidity curve includes a plant body 1 and a circulating air circuit, wherein the circulating air circuit includes an air intake variable frequency fan 5, an air exhaust variable frequency fan 6, a temperature and humidity sensor, an air sensor, a venturi tube 9, an air intake pipe 8, a controller, a first connecting pipe group 2 and a second connecting pipe group 3, and the controller can be a PLC controller or a single chip microcomputer, etc.;

[0031] The air intake variable frequency fan 5 and the air exhaust variable frequency fan 6 are respectively arranged on the two opposite inner walls of the factory building body 1, and the air outlets of the air intake variable frequency fan 5 and the air exhaust variable frequency fan 6 are respectively connected with the temperature and humidity sensor and the air sensor, and the controller is electrically connected to the temperature and humidity sensor, the air sensor, the air intake variable frequency fan 5 and the air exhaust variable frequency fan 6, respectively. One end of the first connecting pipe group 2 is connected to the air intake variable frequency fan 5, and the venturi tube 9 is arranged in the soil. The inlet and exhaust ports of the venturi tube 9 are respectively connected to the other end of the first connecting pipe group 2 and one end of the second connecting pipe group 3, and the other end of the second connecting pipe group 3 passes through the soil and is connected to the air exhaust variable frequency fan 6. One end of the air intake pipe 8 is connected to the throat of the venturi tube 9 and is connected to the inside of the venturi tube 9. The other end of the air intake pipe 8 passes through the soil and is connected to the outside air.

[0032] Among them, the variable frequency fans currently on the market are all equipped with a processor / controller. By setting a program in the processor / controller, the program can adjust the frequency of the variable frequency fan according to the detection data of the temperature and humidity sensor and the air sensor.

[0033] In this embodiment, the circulating air circuit further includes a coil 4 , and one end of the second connecting pipe group 3 is connected to one end of the three-way pipe 11 through the coil 4 .

[0034] In this embodiment, it also includes an exhaust pipe 7, a first solenoid valve 12, a second solenoid valve 13 and a three-way pipe 11;

[0035] The three-way pipe 11 is arranged on the first connecting pipe group 2, one end of the exhaust pipe 7 is connected to the port of the three-way pipe 11, and the other end of the exhaust pipe 7 is exposed to the air. The first solenoid valve 12 is arranged on the exhaust pipe 7, and the second solenoid valve 13 is arranged on the first connecting pipe group 2. The position of the three-way pipe 11 on the first connecting pipe group 2 is between the air intake variable frequency fan 5 and the second solenoid valve 13.

[0036] In this embodiment, the circulating air circuit further includes an air pressure sensor 10 and a controller;

[0037] The air pressure sensor 10 is disposed in the main body of the plant 1 , and the controller is electrically connected to the air pressure sensor 10 , the first solenoid valve 12 , and the second solenoid valve 13 , respectively.

[0038] In this embodiment, a mesh cover 14 is provided at the other end of the air inlet pipe 8 .

[0039] In this embodiment, the number of the circulating air circuits is two, and the air inlet variable frequency fans 5 in the two circulating air circuits are respectively arranged at the lower part of the two opposite inner side walls of the plant main body 1 near the corners, and the air exhaust variable frequency fans 6 in the two circulating air circuits are respectively arranged at the upper part of the two opposite inner side walls of the plant main body 1 near the corners, Figure 1 As shown, the position design of the two circulating air circuits is preferably a flipped mirror image design.

[0040] In this embodiment, the controller can control the frequency states of the air intake variable frequency fan 5 and the air exhaust variable frequency fan 6 in one of the circulating air circuits to be in a high frequency state and a low frequency state respectively, and control the frequency states of the air intake variable frequency fan 5 and the air exhaust variable frequency fan 6 in another circulating air circuit to be in a low frequency state and a high frequency state respectively. The frequencies of the air intake variable frequency fan and the air exhaust variable frequency fan of the two circulating air circuits are in opposite states to improve the indoor air flow effect, thereby improving the neutralization effect of the mixed air entering the room and the indoor air.

[0041] In this embodiment, the pipe portion of the circulating air loop exposed to the air is provided with an insulation member, which may be a thermal insulation cotton cover. In order to ensure its thermal insulation performance, the pipe portion of the circulating air loop exposed to the air may also be designed as a double-layer pipe sandwich structure, and the cavity of the double-layer pipe sandwich structure may be evacuated to improve the thermal insulation performance; the pipe portion of the circulating air loop buried in the soil is made of metal, and other materials with good heat conduction effects may also be selected.

[0042] In summary, the utility model can effectively solve the sudden changes in temperature, humidity and air condition in the factory caused by the fresh air system and the air-conditioning compressor, and the equipment is simple and the cost is relatively low.

[0043] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A plant that simulates the natural temperature and humidity curve changes, characterized in that: It comprises a plant main body (1) and a circulating air circuit, wherein the circulating air circuit comprises an air intake variable frequency fan (5), an air exhaust variable frequency fan (6), a temperature and humidity sensor, an air sensor, a venturi tube (9), an air intake pipe (8), a controller, a first connecting pipe group (2) and a second connecting pipe group (3); The air intake variable frequency fan (5) and the air exhaust variable frequency fan (6) are respectively arranged on two opposite inner side walls of the main body (1) of the factory building; the air outlets of the air intake variable frequency fan (5) and the air exhaust variable frequency fan (6) are respectively connected to the temperature and humidity sensor and the air sensor; the controller is respectively electrically connected to the temperature and humidity sensor, the air sensor, the air intake variable frequency fan (5) and the air exhaust variable frequency fan (6); one end of the first connecting pipe group (2) is connected to the air intake variable frequency fan (5); the temperature and humidity sensor and the air sensor are ... and the air intake variable frequency fan (5); the temperature and humidity sensor and the air sensor are respectively electrically connected to the temperature and humidity sensor, the air sensor and the air intake variable frequency fan (5); the temperature and humidity The Venturi tube (9) is arranged in the soil, the inlet and outlet ports of the Venturi tube (9) are respectively connected to the other end of the first connecting tube group (2) and one end of the second connecting tube group (3), the other end of the second connecting tube group (3) passes through the soil and is connected to the exhaust variable frequency fan (6), one end of the air inlet pipe (8) is connected to the throat of the Venturi tube (9) and is connected to the inside of the Venturi tube (9), and the other end of the air inlet pipe (8) passes through the soil and is connected to the outside air.

2. A plant for simulating natural temperature and humidity curve changes according to claim 1, characterized in that: It also includes an exhaust pipe (7), a first solenoid valve (12), a second solenoid valve (13) and a three-way pipe (11); The three-way pipe (11) is arranged on the first connecting pipe group (2), one end of the exhaust pipe (7) is connected to the port of the three-way pipe (11), and the other end of the exhaust pipe (7) is exposed to the air, the first solenoid valve (12) is arranged on the exhaust pipe (7), and the second solenoid valve (13) is arranged on the first connecting pipe group (2), and the position of the three-way pipe (11) on the first connecting pipe group (2) is between the air intake variable frequency fan (5) and the second solenoid valve (13).

3. A plant for simulating natural temperature and humidity curve changes according to claim 2, characterized in that: The circulating air circuit also includes a coil (4), and one end of the second connecting pipe group (3) is connected to one end of the three-way pipe (11) through the coil (4).

4. A plant for simulating natural temperature and humidity curve changes according to claim 3, characterized in that: The circulating air circuit also includes an air pressure sensor; The air pressure sensor (10) is arranged in the main body of the plant (1), and the controller is electrically connected to the air pressure sensor (10), the first solenoid valve (12) and the second solenoid valve (13) respectively.

5. A plant for simulating natural temperature and humidity curve changes according to claim 1, characterized in that: The other end of the air inlet pipe (8) is provided with a mesh cover (14).

6. A plant for simulating natural temperature and humidity curve changes according to claim 1, characterized in that: There are two circulating air circuits, and the air intake variable frequency fans (5) in the two circulating air circuits are respectively arranged at the lower part of the two opposite inner side walls of the factory building body (1) near the corners, and the air exhaust variable frequency fans (6) in the two circulating air circuits are respectively arranged at the upper part of the two opposite inner side walls of the factory building body (1) near the corners.

7. A plant for simulating natural temperature and humidity curve changes according to claim 2, characterized in that: The pipe part of the circulating air loop exposed to the air is provided with a heat-insulating member, and the pipe part of the circulating air loop buried in the soil is made of metal.

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