A factory building that simulates natural temperature and humidity changes

Abstract

The present invention relates to a factory building that simulates natural temperature and humidity changes, comprising a factory building main body and a circulating air circuit, wherein the circulating air circuit comprises 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 coil, a first connecting pipe group, a second connecting pipe group, an exhaust pipe, a first solenoid valve, a second solenoid valve, a tee pipe, an air pressure sensor and a controller; the controller adjusts the frequency of the variable frequency fan based on information collected by the temperature and humidity sensor and the air sensor, thereby saving energy consumption; in addition, the outside air under the action of atmospheric pressure can enter the first connecting pipe group through the air intake pipe and the venturi effect tube, mix with the air in the circulating air circuit and then enter the room, and the pipe part in the circulating air circuit is buried in the soil, and the specific heat capacity of the soil is greater than that of the air, so that the indoor temperature can be effectively adjusted while achieving indoor air circulation and adjusting the air state.

Description

Technical Field

[0001] The present invention relates to the technical field of plant cultivation, in particular to a plant building simulating natural temperature and humidity changes. Background Art

[0002] A suitable temperature, humidity, and air (oxygen and carbon dioxide concentrations) environment are crucial for the growth of plants (such as vegetables) and edible fungi. Given the current limitations of land resources, factory farming has become a new cropping model. This approach primarily relies on manual intervention to create an environment suitable for plant growth indoors, with temperature, humidity, and air conditioning being key components. Existing environmental regulation technologies for factory farming primarily rely on fresh air systems and air conditioning compressors to adjust the temperature, humidity, oxygen, and carbon dioxide concentrations within the cultivation room. This approach has a significant drawback: when the indoor temperature, humidity, oxygen, and carbon dioxide concentrations need to be adjusted, the fresh air system, which draws outdoor air into the room through heat exchange, can cause sudden changes in the indoor temperature, humidity, oxygen, and carbon dioxide concentrations. This is extremely detrimental to the growth of plants and edible fungi that are sensitive to these changes. For edible fungi, this sudden change can cause them to stop growing prematurely, reducing yields. Furthermore, current fresh air systems cannot monitor and adjust the air pressure in the factory in real time, which can also affect plant growth. Summary of the Invention

[0003] In order to solve the above problems of the prior art, the present invention provides a factory building that simulates natural temperature and humidity changes, ensuring that the indoor temperature and humidity, oxygen concentration, and carbon dioxide concentration change slowly and naturally, and can intelligently adjust the air pressure in the factory building, thereby being suitable for plant growth.

[0004] In order to achieve the above-mentioned object, the main technical solutions adopted by the present invention include: a factory building that simulates natural temperature and humidity changes, including a factory building 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 coil, a first connecting pipe group, a second connecting pipe group, an exhaust pipe, a first solenoid valve, a second solenoid valve, a tee pipe, an air pressure sensor and a controller;

[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 factory building body, 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, one end of the first connecting pipe group is connected to the air exhaust 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 coil, the other end of the coil is connected to 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, and the other end of the air intake pipe passes through the soil and is connected to the outside air;

[0006] 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. 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. The air pressure sensor is arranged in the main body of the factory building, and the controller is electrically connected to the temperature and humidity sensor, air sensor, air intake variable frequency fan, exhaust variable frequency fan, air pressure sensor, first solenoid valve and second solenoid valve respectively.

[0007] The beneficial effects of the present invention are:

[0008] 1. Since the air outlets of the air intake variable frequency fan and the air exhaust variable frequency fan are respectively connected to temperature and humidity sensors and air sensors, they can detect the indoor temperature and humidity and air conditions (carbon dioxide concentration and oxygen concentration), as well as the temperature and humidity and air conditions of the air mixed with the outside air entering the room. 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.

[0009] 2. The air drawn from the room passes through the Venturi tube. According to Bernoulli's principle, a fluid with a high velocity has a low pressure on one side. Therefore, when air passes through the throat of the Venturi tube, the velocity increases and the pressure decreases. Under the influence of atmospheric pressure, the outside air can enter the first connecting pipe group through the air inlet pipe and the Venturi tube, mix with the air in the circulating air circuit, and then enter the room. The pipes in the circulating air circuit are partially buried in the soil (the burial depth can be set according to specific heat exchange requirements). Taking advantage of the soil's greater specific heat capacity than air, the soil temperature is lower than the air temperature in summer. At the same time, plants need to cool down in summer (relative to the outside air temperature), while the opposite is true in winter. This can effectively regulate the indoor temperature while achieving indoor air circulation and regulating the air state. In addition, when the relative concentration of a certain gas (such as carbon dioxide) needs to be increased indoors, the gas (carbon dioxide) can be simply introduced into the pipe through the Venturi tube. It mixes with the gas in the pipe and enters the room, thereby increasing the relative concentration of the corresponding gas indoors. Compared to using the traditional three-way connection method to mix the outside air with the air in the pipe, the use of a 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 existing technology 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 pipe through the venturi tube, it mixes with the air in the pipe, flows in the pipe, and undergoes pre-treatment such as heat exchange before being directly sent into the room, further improving the renewal efficiency of indoor air.

[0010] 3. By setting 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] 4. In the default state, the first solenoid valve is closed and the second solenoid valve is open. The circulating air circuit continuously inputs mixed gas with outdoor air into the room. When the indoor space needs to be exhausted quickly, just 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 the indoor air is exhausted, operate the first solenoid valve and the second solenoid valve to restore the default state.

[0012] 5. 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 discharge the indoor gas in real time to adjust the indoor air pressure level.

[0013] Preferably, the other end of the air inlet pipe is provided with a mesh cover.

[0014] Based on the above description, the air intake pipe is equipped with an insect-proof cover to prevent external insects and other debris from being brought into the indoor environment when inhaling air, thereby keeping the indoor environment clean and tidy.

[0015] 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 walls of the factory 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 walls of the factory body near the corners.

[0016] 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 corners in 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 and 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 the temperature and humidity and other environments at different positions and improve the consistency of the 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.

[0017] 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.

[0018] 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 pipe part buried in the soil is made of metal material, which has good heat conduction effect and can effectively exchange heat with the soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A perspective view of a factory building simulating natural temperature and humidity changes according to the present invention;

[0020] Figure 2 This is a schematic diagram of the external structure of a factory building that simulates natural temperature and humidity changes according to the present invention;

[0021] Figure 3 for Figure 2 Detailed view of part A;

[0022] Description of reference numerals:

[0023] 1. Main building; 2. First connecting pipe group; 3. Second connecting pipe group; 4. Coil; 5. Intake variable frequency fan; 6. Exhaust variable frequency fan; 7. Exhaust pipe; 8. Intake pipe; 9. Venturi tube; 10. Air pressure sensor; 11. Tee pipe; 12. First solenoid valve; 13. Second solenoid valve; 14. Net cover. DETAILED DESCRIPTION

[0024] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0025] Example 1

[0026] Please refer to Figures 1 to 3 As shown, a factory building that simulates natural temperature and humidity changes includes a factory building body 1 and a circulating air circuit. 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 coil 4, a first connecting pipe group 2, a second connecting pipe group 3, an exhaust pipe 7, a first solenoid valve 12, a second solenoid valve 13, a three-way pipe 11, an air pressure sensor 10, and a controller. The controller can be a PLC controller or a single-chip microcomputer.

[0027] The air intake variable frequency fan 5 and the air exhaust variable frequency fan 6 are respectively arranged on the two opposite inner side walls of the factory building main 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 to the temperature and humidity sensor and the air sensor, one end of the first connecting pipe group 2 is connected to the air exhaust variable frequency fan 6, and the venturi tube 9 is arranged in the soil, and 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 coil 4, the other end of the coil 4 is connected to 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, and the other end of the air intake pipe 8 passes through the soil and is connected to the outside air;

[0028] 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. The air pressure sensor 10 is arranged in the main body of the factory 1, and the controller is electrically connected to the temperature and humidity sensor, air sensor, air intake variable frequency fan 5, exhaust variable frequency fan 6, air pressure sensor 10, first solenoid valve 12 and second solenoid valve 13 respectively.

[0029] 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.

[0030] In this embodiment, a mesh cover 14 is provided at the other end of the air inlet pipe 8 .

[0031] In this embodiment, there are two circulating air circuits. 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.

[0032] In this embodiment, the controller can be used to 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 the frequency states of the air intake variable frequency fan 5 and the air exhaust variable frequency fan 6 in the other circulating air circuit to be in a low frequency state and a high frequency state respectively, thereby improving the fluidity of the indoor air and improving the neutralization effect of the mixed air entering the room and the indoor air.

[0033] In this embodiment, the pipe portion of the circulating air loop exposed to the air is provided with a thermal insulation member, which can 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 can also be designed as a double-layer pipe sandwich structure, and the cavity of the double-layer pipe sandwich structure is vacuumed 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 thermal conductivity can also be selected.

[0034] In summary, the present invention 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.

[0035] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's description and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A factory building that simulates natural temperature and humidity changes, characterized in that: The invention comprises a main body of a plant (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 coil (4), a first connecting pipe group (2), a second connecting pipe group (3), an exhaust pipe (7), a first solenoid valve (12), a second solenoid valve (13), a three-way pipe (11), an air pressure sensor (10) and a controller; The air intake variable frequency fan (5) and the air exhaust variable frequency fan (6) are respectively arranged on the two opposite inner side walls of the main body of the plant (1); 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; one end of the first connecting pipe group (2) is connected to the air exhaust variable frequency fan (6); the venturi tube (9) is arranged in the soil; the inlet and exhaust ports of the venturi tube (9) are respectively connected to the first connecting pipe group (2); the air intake and exhaust ports of the venturi tube (9) are respectively connected to the first connecting pipe group (2); the air intake and exhaust ports of the venturi tube (9) are respectively connected to the first connecting pipe group (2); the air exhaust and intake ... The other end of a connecting pipe group (2) is connected to one end of a coil (4), the other end of the coil (4) is connected to one end of the second connecting pipe group (3), the other end of the second connecting pipe 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; 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 located between the air intake variable frequency fan (5) and the second solenoid valve (13). The air pressure sensor (10) is arranged in the main body of the factory building (1), and the controller is electrically connected to the temperature and humidity sensor, the air sensor, the air intake variable frequency fan (5), the exhaust variable frequency fan (6), the air pressure sensor (10), the first solenoid valve (12) and the second solenoid valve (13).

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

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

4. The factory building simulating natural temperature and humidity changes according to claim 1, characterized in that: 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.

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