Constant temperature, constant humidity, irrigation and environmental control integrated equipment for agricultural shed

Abstract

The utility model relates to the technical field of agricultural sheds, in particular to constant temperature, constant humidity, irrigation and environmental control integrated equipment for an agricultural shed. Comprising an all-in-one machine and an agricultural shed, the all-in-one machine comprises a heat pump and an environmental control water tank, the heat pump takes water as a medium and can work in a cold state and a hot state, and a first fresh air pipeline, a second fresh air pipeline, an air return pipe network and a conveying pipeline are arranged outside the environmental control water tank; an atomizer, an aeration pipeline, a water replenishing and water level controller, a gas collecting port, a gas-liquid heat exchange pipe, a spray irrigation water taking port and a blow-down valve are arranged in the environmental control water tank; according to the utility model, through the complete and effective design, the requirements on carbon dioxide and oxygen concentration control and the like involved in environmental temperature, humidity and ventilation in the industrial crop planting process of large, medium and small agricultural sheds are met and applied at extremely low cost, and particularly, the requirements of shed frame installation in the agricultural sheds can be met; the requirements of ventilation of the planting use area and control and management of various environmental parameters are improved.

Description

Technical Field

[0001] This utility model relates to the field of agricultural greenhouse technology, and in particular to an integrated device for constant temperature, constant humidity, irrigation and environmental control in agricultural greenhouses. Background Technology

[0002] Agricultural greenhouses are essentially artificially constructed environments that simulate a relatively natural environment for growing plants, enabling the production of food and crops needed by humans under harsh weather conditions or during off-seasons. Crops are typically grown in these greenhouses using methods such as hydroponics, direct ground planting, and tiered cultivation. The greenhouses are often arranged in rectangular, box-like structures, and the simulated environment includes temperature control, humidity control, and control of carbon dioxide and oxygen concentrations. Inside the rectangular agricultural greenhouse, to maximize planting area, some greenhouses incorporate multi-layered shelves. These greenhouses include heating, temperature control, and heat exchange systems, ventilation duct systems, exhaust systems, mobile humidification and sprinkler systems, lighting systems, and more. This multitude of systems significantly increases the cost, with agricultural greenhouses commonly costing millions of yuan. Despite the exorbitant cost, these systems still suffer from serious deficiencies in simulating natural environments. In particular, ventilation in many areas is extremely poor and difficult to improve, causing plants to be unable to meet survival requirements and severely impacting crop yields. Furthermore, due to system compatibility issues, various heat exchanges are not entirely effective, resulting in very low thermal efficiency, extremely high energy consumption, and exorbitant operating and maintenance costs. Consequently, the value of the produced crops is not particularly outstanding. All of these factors severely affect the return on investment and limit the cultivation of many common crops in agricultural greenhouses, setting a high barrier to entry for the promotion of greenhouse agriculture.

[0003] Therefore, this application proposes an integrated device for constant temperature, constant humidity, irrigation and environmental control in agricultural greenhouses. Utility Model Content

[0004] This utility model proposes an integrated equipment for constant temperature, constant humidity, irrigation and environmental control in agricultural greenhouses, which can be applied to large, medium and small agricultural greenhouses during the planting of cash crops.

[0005] The technical implementation scheme of this utility model is as follows:

[0006] An integrated system for temperature and humidity control, irrigation, and environmental control in an agricultural greenhouse includes an integrated unit and the agricultural greenhouse. The integrated unit includes a heat pump that uses water as a medium and can provide both cold and hot operation, and an environmental control water tank. The environmental control water tank is externally equipped with a first fresh air duct, a second fresh air duct, a return air network, and a delivery pipeline.

[0007] The environmental control water tank is equipped with an atomizer, which is used to atomize the water.

[0008] The aeration pipe is used to aerate the environmental control water tank. The first fresh air pipe is connected to the return air network, and the return air network is connected to the aeration pipe.

[0009] A water supply and water level controller, wherein the water supply and water level controller is used to maintain the water level of the environmental control water tank at a stable water level line;

[0010] Air collection port, which is used to collect the airflow generated by the atomizer or aeration pipe;

[0011] A gas-liquid heat exchange tube, which is used to heat the air supplied into the agricultural shed;

[0012] The sprinkler irrigation water intake is used to draw water from the agricultural shed when sprinkler irrigation is required. The air collection port, the sprinkler irrigation water intake, and the second fresh air duct are all connected to the delivery pipe. The delivery pipe is equipped with a liquid-gas flow direction control three-way valve, and both the delivery pipe and the return air duct are equipped with liquid-gas high-pressure valves.

[0013] A drain valve is used for cleaning and draining in the environmental control water tank.

[0014] Furthermore, the heat pump and the environmental control water tank can be either integrated or separate. In the integrated form, the heat pump and the environmental control water tank are installed in one cabinet; in the separate form, the heat pump and the environmental control water tank are installed separately, and each part is connected by pipelines.

[0015] Furthermore, the agricultural shed is equipped with a medium-pressure liquid-gas transmission pipeline network connected by transmission pipes, and each pipe of the medium-pressure liquid-gas transmission pipeline network is equipped with a nozzle at its bottom.

[0016] Furthermore, the medium-pressure liquid-gas transmission pipeline network is constructed using PPR, PVC, and galvanized pipes as needed, with pipe diameters of 15-35 mm and pressure ratings of 0.2-0.6 MPa, and is laid out at each required point.

[0017] Furthermore, each pipe of the medium-pressure liquid-gas transmission pipeline network is equipped with a nozzle at its bottom. The nozzles can be selected in various forms according to the needs of the planted plants. Most of them are horizontal, and all nozzles have a shut-off function and can adjust the flow rate.

[0018] Furthermore, it also includes sensors, controllers, and the Internet of Things (IoT). The sensors are deployed inside the agricultural greenhouse and are used to detect parameters that need to be controlled for the crops. The sensors, atomizers, water supply and water level controllers, gas-liquid heat exchange pipes, liquid-gas flow direction control three-way valves, and liquid-gas high-pressure valves are all connected to the controller. The controller is connected to the IoT for remote control.

[0019] Furthermore, the first and second fresh air ducts are used to directly replenish fresh air, carbon dioxide, or oxygen at this location, bypassing the entire system, while the return air network is used to recirculate air within the agricultural shed.

[0020] Furthermore, all of the above electrical components were purchased from the market, and their internal structures and circuit connections are well known in the art.

[0021] This utility model has the following advantages:

[0022] This utility model, with its complete and effective design, meets and is applied at extremely low cost to meet the requirements of large, medium and small agricultural greenhouses in the process of planting cash crops, in terms of environmental temperature, humidity, ventilation and carbon dioxide and oxygen concentration control. In particular, it can meet the requirements of ventilation and various environmental parameter control management in agricultural greenhouses that require the installation of greenhouse frames to increase the planting area. With slight adjustments to the system's pipeline network, it can also be used for temperature and humidity adjustment and control in centralized livestock breeding sheds. Attached Figure Description

[0023] Figure 1 This is a general structural diagram of the integrated state-of-the-art system of this utility model;

[0024] Figure 2 This is a schematic diagram of the internal system structure of the all-in-one machine in its integrated state according to this utility model;

[0025] Figure 3 This is a diagram showing the pipe network arrangement of the sprinkler irrigation system in the agricultural greenhouse of this utility model;

[0026] Figure 4 This is a schematic diagram of the nozzle structure in the pipeline network of this utility model;

[0027] Meaning of the reference numerals in the diagram:

[0028] A. Integrated machine; B. Agricultural shed; 1. Heat pump; 2. Environmental control water tank; 201. Atomizer; 202. Aeration pipe; 203. Water supply and water level controller; 204. Air collection port; 205. Liquid-gas high-pressure pump; 206. Liquid-gas flow direction control three-way valve; 207. Gas-liquid heat exchange pipe; 208. Sprinkler irrigation water intake; 209. Sewage valve; 3. First fresh air duct; 4. Second fresh air duct; 5. Return air duct network; 6. Medium-pressure liquid-gas transmission duct network; 7. Sensor; 8. Controller; 9. Internet of Things; 10. Conveying pipeline. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will describe this utility model in further detail with reference to the accompanying drawings. It is hereby declared that the terms "up," "down," "left," "right," "front," "back," "inner," and "outer," etc., appearing or about to appear in this document, are based solely on the accompanying drawings and are not intended to specifically limit this utility model.

[0030] Example 1

[0031] like Figure 1-4 As shown, an integrated equipment for constant temperature, humidity, irrigation, and environmental control in an agricultural greenhouse includes an integrated unit A and an agricultural greenhouse B. The integrated unit A includes a heat pump 1 that uses water as a medium and can provide both cold and hot operation, and an environmental control water tank 2. In this embodiment, the heat pump 1 and the environmental control water tank 2 are integrated. The environmental control water tank 2 is externally equipped with a first fresh air duct 3, a second fresh air duct 4, a return air network 5, and a delivery pipe 10.

[0032] The environmental control water tank 2 is equipped with an atomizer 201, which is used to atomize water;

[0033] Aeration pipe 202 is used to aerate the environmental control water tank 2. The first fresh air pipe 3 is connected to the return air network 5, and the return air network 5 is connected to the aeration pipe 202.

[0034] Water supply and water level controller 203, which is used to maintain the water level of the environmental control water tank 2 at a stable water level line;

[0035] Air collection port 204 is used to collect the airflow generated by atomizer 201 or aeration pipe 202.

[0036] Gas-liquid heat exchange tube 207 is used to heat the air supplied into the agricultural shed. Some specific crops, such as morel mushrooms, require a certain drying period during the production process. During this stage, the heat exchange coil needs to supply air but not moisture. In addition, gas-liquid heat exchange tube 207 is required when performing the baking function.

[0037] The sprinkler irrigation water intake 208 is used to draw water from the agricultural shed when sprinkler irrigation is required. The air collection port 204, the sprinkler irrigation water intake 208, and the second fresh air duct 4 are all connected to the delivery pipe 10. The delivery pipe 10 is equipped with a liquid-gas flow direction control three-way valve 206, and both the delivery pipe 10 and the return air duct network 5 are equipped with liquid-gas high pressure valves 205. The configuration is calculated according to the capacity of the agricultural shed.

[0038] Drain valve 209 is used for cleaning and draining in the environmental control water tank 2.

[0039] The heat pump 1 and the environmental control water tank 2 can be either integrated or separate. When integrated, the heat pump 1 and the environmental control water tank 2 are installed in one cabinet. When separate, the heat pump 1 and the environmental control water tank 2 are installed separately and connected by pipelines.

[0040] The agricultural shed B is equipped with a medium-pressure liquid-gas transmission pipeline network 6 connected by a transmission pipeline 10. Each pipe of the medium-pressure liquid-gas transmission pipeline network 6 is equipped with a nozzle at its bottom. The medium-pressure liquid-gas transmission pipeline network 6 uses PPR, PVC, and galvanized pipes as needed, with a pipe diameter of 15-35 mm and a pressure resistance of 0.2-0.6 MPa, and is laid out at each required point. Each pipe of the medium-pressure liquid-gas transmission pipeline network 6 is equipped with a nozzle at its bottom. The nozzles can be selected in various forms according to the needs of the planted plants. Most of them are horizontal, and all nozzles have a shut-off function and can adjust the flow rate.

[0041] The system also includes a sensor 7, a controller 8, and an Internet of Things (IoT) device 9. The sensor 7 is installed inside agricultural shed B and is used to detect the parameters that need to be controlled for the crops. The sensor 7, atomizer 201, water supply and water level controller 203, gas-liquid heat exchange pipe 207, liquid-gas flow direction control three-way valve 206, and liquid-gas high-pressure valve 205 are all connected to the controller 8, which is connected to the IoT device 9.

[0042] The first fresh air duct 3 and the second fresh air duct 4 are used to directly replenish fresh air, carbon dioxide or oxygen at this point, bypassing the entire system. The return air network 5 is used to recirculate air within the agricultural shed.

[0043] It should be noted that heat pump 1 provides an operating temperature range of 1℃ to 80℃. With adequate insulation materials in the agricultural greenhouse, this system provides the following functions:

[0044] ① With a working temperature range of 1℃ to 8℃, and provided the agricultural greenhouse is well insulated, it can be used for food preservation and storage.

[0045] ② The temperature range of 8℃ to 32℃ is suitable for the growth and reproduction of various crops;

[0046] ③ The working temperature range of 35℃ to 80℃ is suitable for drying and baking various crops. If the system temperature exceeds 50℃, it is necessary to consider using galvanized pipes for the pipelines.

[0047] The working section provided by heat pump 1 enables the downstream agricultural shed to have the following three functions: first, preservation and storage; second, crop cultivation and planting; and third, drying room for processing various fresh foods. The heat source system can be connected in parallel with solar energy, river water, well water and other heat sources.

[0048] The environmental control water tank 2 is a stainless steel insulated water tank, with its volume calibrated according to the agricultural greenhouse volume. The integrated type and heat pump 1 are housed in one cabinet, while the separate types are installed separately, with each part connected by pipes. Heat pump 1 heats or cools the water in the tank according to the needs of the downstream environment. Two high-pressure liquid-gas pumps 205, connected by pipes, supply water, mist, gas, etc., at various temperatures according to the downstream requirements via three-way valves on the supply and return circuits.

[0049] The atomizer 201 can atomize water, and the water mist with a set temperature can supplement and control the air humidity in the agricultural greenhouse. If the atomizer 201 is used for refrigeration and baking in the agricultural greenhouse, it needs to be removed from the environmental control water tank 2.

[0050] Since there is no air exchange with the outside under constant temperature conditions, the gas drawn back from the agricultural greenhouse is aerated upwards at the bottom of the water tank through the form of pipes, thereby taking away the cold and heat of the water tank. The gas is then sent back into the agricultural greenhouse by the pressurization pump to maintain the constant temperature of the agricultural greenhouse.

[0051] The fluids delivered to the agricultural shed come in three states: gas (air), atomized gas, and irrigation water. The distribution of these three states is controlled by the control system, which controls the three-way valve to distribute the fluids according to the needs of the agricultural shed.

[0052] ①The atomized water vapor and the aerated air and fresh air are sent to the agricultural greenhouse pipe network through a three-way valve and a high-pressure pump;

[0053] ② If the agricultural shed needs sprinkler irrigation, the three-way valve directly draws water from the environmental control water tank 2 from the sprinkler water intake 208 and pumps it to the agricultural shed;

[0054] ③ The first fresh air duct 3 and the second fresh air duct 4 can bypass the entire system and directly replenish fresh air, carbon dioxide or oxygen here.

[0055] Example 2

[0056] The difference between this embodiment and the previous embodiment is that the heat pump 1 and the environmental control water tank 2 are set up separately, and the heat pump 1 and the environmental control water tank 2 are installed separately, and each part is connected by pipelines.

[0057] Example 3

[0058] The difference between this embodiment and Embodiments 1 and 2 is that the heat pump 1 can be replaced with solar or photovoltaic.

[0059] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An integrated equipment for constant temperature, constant humidity, irrigation, and environmental control in agricultural greenhouses, characterized in that: The system includes an integrated machine (A) and an agricultural shed (B). The integrated machine (A) includes a heat pump (1) that uses water as a medium and can provide both cold and hot operation, and an environmentally controlled water tank (2). The environmentally controlled water tank (2) is externally equipped with a first fresh air duct (3), a second fresh air duct (4), a return air network (5), and a conveying pipe (10). The environmentally controlled water tank (2) is internally equipped with an atomizer (201) for atomizing water. An aeration pipe (202) is used to aerate the environmentally controlled water tank (2). The first fresh air duct (3) is connected to the return air network (5), and the return air network (5) is connected to the aeration pipe (202). A water replenishment and water level controller (203) is used to maintain the water level of the environmentally controlled water tank (2) at a stable level. The water level line; the air collection port (204), which is used to collect the airflow generated by the atomizer (201) or the aeration pipe (202); the gas-liquid heat exchange pipe (207), which is used to heat the air sent into the agricultural shed; the sprinkler irrigation water intake port (208), which is used to take water from here when the agricultural shed needs to be sprinkled for irrigation, the air collection port (204), the sprinkler irrigation water intake port (208), and the second fresh air pipe (4) are all connected to the conveying pipe (10), the conveying pipe (10) is equipped with a liquid-gas flow direction control three-way valve (206), and the conveying pipe (10) and the return air network (5) are both equipped with a liquid-gas high pressure valve (205); the drain valve (209), which is used to clean and drain the environmental control water tank (2).

2. The integrated equipment for constant temperature, constant humidity, irrigation and environmental control in agricultural greenhouses according to claim 1, characterized in that: The heat pump (1) and the environmental control water tank (2) are either integrated or separate. In the integrated state, the heat pump (1) and the environmental control water tank (2) are installed in one cabinet. In the separate state, the heat pump (1) and the environmental control water tank (2) are installed separately and connected by pipelines.

3. The integrated equipment for constant temperature, constant humidity, irrigation and environmental control in agricultural greenhouses according to claim 1, characterized in that: The agricultural shed (B) is equipped with a medium-pressure liquid-gas transmission pipeline network (6) connected by a transmission pipeline (10), and each pipe of the medium-pressure liquid-gas transmission pipeline network (6) is equipped with a nozzle at the bottom.

4. The integrated equipment for constant temperature, constant humidity, irrigation and environmental control in agricultural greenhouses according to claim 3, characterized in that: The medium-pressure liquid-gas transmission pipeline (6) shall be constructed using PPR, PVC and galvanized pipes as needed, with a pipe diameter of 15-35 mm and a pressure of 0.2-0.6 MPa, and shall be laid to each required point.

5. An integrated equipment for constant temperature, constant humidity, irrigation and environmental control in agricultural greenhouses according to claim 3 or 4, characterized in that: Each pipe of the medium-pressure liquid-gas transmission pipeline network (6) is equipped with a nozzle at the bottom. The nozzles can be selected in various forms according to the needs of the planted plants. Most of them are horizontal. All nozzles have a shut-off function and can adjust the flow rate.

6. The integrated equipment for constant temperature, constant humidity, irrigation and environmental control in agricultural greenhouses according to claim 1, characterized in that: It also includes a sensor (7), a controller (8) and an Internet of Things (9). The sensor (7) is installed in the agricultural shed (B). The sensor (7) is used to detect the parameter data that the crops need to control. The sensor (7), atomizer (201), water supply and water level controller (203), gas-liquid heat exchange tube (207), liquid-gas flow direction control three-way valve (206), and liquid-gas high pressure valve (205) are all connected to the controller (8). The controller (8) is connected to the Internet of Things (9).

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