Intelligent high-temperature conditioning equipment and conditioning method for cured tobacco leaves in a box-type curing barn

Abstract

The application discloses a kind of for the intelligent high-temperature equipment and moisture regain method of tobacco leaf after curing in box-type curing barn, utilize high-pressure water pump to burn hot water by atomizing nozzle and atomize hot water mist into small particle moisture, under the action of curing barn circulating fan, make tobacco in curing barn interior quickly obtain moisture, realize the purpose of tobacco moisture regain.The present application includes box-type curing barn and high-temperature moisture regain chamber outer structure, the upper portion of box-type curing barn is equipped with high-temperature moisture regain chamber inner structure, box-type high-temperature moisture regain chamber inner structure is connected with box-type high-temperature moisture regain chamber outer structure, a plurality of tobacco loading devices for loading tobacco are provided in box-type curing barn, curing barn heat pump and circulating fan are installed outside box-type curing barn.The present application is humidified to box-type curing barn by high-temperature moisture regenerator outer structure and high-temperature moisture regenerator inner structure, cooperate with the heat pump of box-type curing barn and circulating fan can increase the kinetic energy of water vapor, promote the absorption of moisture by tobacco outside and inside the box, effectively improve the moisture regain efficiency and moisture regain effect of box-type curing barn.

Description

Technical Field

[0001] This invention relates to the field of intelligent tobacco curing technology, and in particular to an intelligent high-temperature tobacco leaf rehumidification device and method for use in box-type curing barns. Background Technology

[0002] To achieve the core concept of sustainable development in modern tobacco agriculture—"improving quality and efficiency while saving labor and reducing costs"—box-type curing has emerged. Box-type curing, with its advantages of mechanized harvesting, loading, and drying, has gained favor in major tobacco-producing areas, fundamentally reducing labor intensity. While box-type curing barns have achieved certain advantages in production, their high tobacco loading density and powerful drying fans result in a significantly lower moisture content in the cured tobacco leaves compared to densely packed barns. These factors make rehydration of the cured tobacco leaves in box-type barns extremely difficult. Natural rehydration is time-consuming and ineffective, severely impacting the curing process in tobacco-producing areas.

[0003] As temperature increases, the absolute moisture content in the air gradually increases. Tobacco leaves, being a porous medium, have an increased moisture absorption capacity with rising temperatures. While air temperature can be regulated in nature, the absolute moisture content is significantly lower than that of saturated air. This means that sufficient moisture cannot be provided during tobacco leaf rehumidification, preventing the tobacco leaves from absorbing enough water for proper rehumidification. Furthermore, as temperature increases, air molecules become more active, allowing water vapor to acquire greater kinetic energy and penetrate more effectively. However, current ambient temperature rehumidifiers spray water particles that are relatively large and at low temperatures, severely hindering the absorption of water by the tobacco leaves inside the chamber and significantly reducing rehumidification efficiency. Summary of the Invention

[0004] To address the shortcomings in the aforementioned background technology, this invention proposes an intelligent high-temperature rehumidification device for tobacco leaves after curing in a box-type curing barn. It utilizes a high-pressure water pump to atomize boiling water into small water particles through atomizing nozzles. Under the action of the curing barn's circulating fan, the tobacco leaves inside the barn quickly absorb moisture, achieving the purpose of rehumidification.

[0005] The technical solution of the present invention is implemented as follows: an intelligent high-temperature tobacco rehumidification device for box-type curing barns, comprising a box-type curing barn and a high-temperature rehumidification outdoor structure, a high-temperature rehumidification indoor structure installed on the upper part of the box-type curing barn, the high-temperature rehumidification indoor structure being connected to the high-temperature rehumidification outdoor structure, a number of tobacco loading devices for loading tobacco being provided inside the box-type curing barn, and a curing barn heat pump and a circulating fan being installed outside the box-type curing barn.

[0006] Furthermore, the high-temperature rehumidification outdoor structure includes a water tank and a control box. The water tank is located on the upper part of the trolley, and the control box is located on the lower part of the trolley. The trolley is also equipped with a water pump that works in conjunction with the water tank.

[0007] Furthermore, the water tank includes an inner tank and an outer tank disposed outside the inner tank. A heating wire is provided between the inner tank and the outer tank. A water inlet is provided at the upper part of the inner tank, and a water outlet is provided at the lower part of the inner tank. The water outlet extends to the outside of the outer tank. A temperature sensor is also provided inside the inner tank.

[0008] Furthermore, the control box includes a housing, and a control unit is provided inside the housing. The control unit controls and connects to the water pump, heating wire and temperature sensor. The control unit is electrically connected to the power supply assembly located inside the housing.

[0009] Furthermore, the housing is also equipped with a cooling fan that works in conjunction with the control unit.

[0010] Furthermore, the trolley is equipped with a display screen and casters at the bottom.

[0011] Furthermore, the high-temperature rehumidification chamber structure includes a water pipe, on which several evenly distributed atomizing nozzles are provided.

[0012] A rehumidification method for an intelligent high-temperature tobacco rehumidification device used in a box-type curing barn includes the following steps: S1: The curing barn heat pump heats and cures the tobacco leaves in the box-type curing barn, observes the curing status of the tobacco leaves in the loading device to ensure that the curing requirements are met, and then adjusts the temperature and humidity in the box-type curing barn to reach 55%. S2: The heating wire inside the high-temperature and moisture-retaining outdoor structure heats the water tank, raising the temperature of the water in the tank to temperature x; S3: When the temperature and humidity in step S1 reach the required level, the control box uses a water pump to transport the water in the water tank in step S2 to the high temperature rehumidification chamber structure, and atomizes it through the atomizing nozzles on the water pipes of the high temperature rehumidification chamber structure to increase the humidity in the box-type drying room. S4: When the humidity inside the box-type drying room reaches y, the indoor equipment of the high-temperature rehumidification machine and the outdoor structure of the high-temperature rehumidification machine will continue to work for z hours and then stop. S5: Observe whether the tobacco leaves have reached the re-moistening standard. If the re-moistening standard is reached, the control box controls the outdoor equipment of the high-temperature re-moistening machine to stop working. If the re-moistening standard is not reached, repeat steps S2 to S5.

[0013] More preferably, in step S3, the heating temperature of the rehumidifier is 100°C.

[0014] In a further preferred embodiment, in step S4, the humidity y is 95% and the duration z is 30 minutes.

[0015] The beneficial effects of this invention are as follows: 1. This invention humidifies the box-type curing barn through a high-temperature humidification outdoor structure and a high-temperature humidification indoor structure. Combined with the heat pump and circulating fan of the box-type curing barn, it can increase the kinetic energy of water vapor, promote the absorption of moisture by the tobacco leaves on the outside and inside of the box, and effectively improve the humidification efficiency and humidification effect of the box-type curing barn.

[0016] 2. The water tank and water pump work together to provide a sufficient water source for the high-temperature rehumidification indoor structure. The water tank, water pump and control box are all set on a trolley, which is convenient to move and has high turnover. It can provide a high-temperature rehumidification outdoor structure for box-type curing barns under different requirements at different times, reducing the cost for tobacco farmers.

[0017] 3. The control box is equipped with a control unit. The control unit works with the temperature sensor to obtain the temperature of the water tank, so that the water in the tank is kept at a certain temperature under the heating of the heating wire. This is used to ensure the water supply temperature of the outdoor structure of the high-temperature rehumidification machine. At the same time, it can also control the working time of the water pump. The display can show the data of the box-type drying room collected by the control unit, the rehumidification time of the outdoor structure of the high-temperature rehumidification machine, and the water temperature in the water tank, which is convenient for the staff to observe and is clear.

[0018] 4. The high-temperature rehumidification chamber uses atomizing nozzles, which atomize water into fine particles under the action of a high-pressure water pump. Combined with the heat pump and circulating fan of the box-type curing barn, this increases the kinetic energy of water vapor and improves the rehumidification efficiency of the tobacco.

[0019] 5. Heat the water used for rehumidification in the curing barn to 100℃, and then atomize it through the atomizing nozzle. This improves the atomization effect and avoids the need to heat the atomizing water in the curing barn. After the rehumidification reaches the required level, continue to work for half an hour to further improve the rehumidification effect and ensure the uniformity of the tobacco leaves' rehumidification. Attached Figure Description

[0020] To more clearly illustrate the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the outdoor high-temperature and moisture-retaining structure of the present invention; Figure 3 This is a schematic diagram of the high-temperature rehumidification indoor structure of the present invention; Figure 4 This is a schematic diagram of a monitor; Figure 5 This is a schematic diagram of the water tank structure; Figure 6This is a connection diagram of the control unit; Figure 7 This is a flowchart illustrating the rehydration process of the present invention.

[0022] In the diagram: 1. High-temperature and humidity outdoor structure; 2. High-temperature and humidity indoor structure; 3. Smoke loading device; 4. Curing barn automatic controller; 5. Curing barn heat pump; 6. Box-type curing barn; 7. Trolley; 8. Display screen; 9. Water tank; 10. Water pump; 11. Control box; 12. Water pipe; 13. Atomizing nozzle; 14. Mounting frame; 15. Switch; 16. Panel; 17. Bracket; 18. Water inlet; 19. Power supply assembly; 20. Water outlet; 21. Heating wire; 22. Temperature sensor. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] like Figure 1 As shown in Example 1, an intelligent high-temperature tobacco rehumidification device for a box-type curing barn includes a box-type curing barn 6 and a high-temperature rehumidification outdoor structure. A high-temperature rehumidification indoor structure is installed on the upper part of the box-type curing barn 6, and the indoor structure is connected to the outdoor structure. The box-type curing barn 6 is equipped with several tobacco loading devices 3. A curing barn heat pump 5 and a circulating fan are installed outside the box-type curing barn 6. The high-temperature rehumidification outdoor structure 1 and the high-temperature rehumidification indoor structure 2 humidify the box-type curing barn 6. Combined with the heat pump and circulating fan, this increases the kinetic energy of water vapor, promoting the absorption of moisture by the tobacco leaves both inside and outside the barn, effectively improving the rehumidification efficiency and effect of the box-type curing barn 6.

[0025] Specifically, the box-type curing barn 6 is a compact curing barn capable of curing tobacco from multiple tobacco loading devices 3 simultaneously. The box-type curing barn 6 is equipped with an automatic control unit, preferably the existing compact curing barn automatic control unit 4. This unit has safety protection and voltage detection functions, protecting connected equipment and ensuring its safety. It also has a backup battery, allowing users to monitor the dry and wet bulb temperatures inside the curing barn during power outages. Temperature and humidity sensors inside the box-type curing barn 6 are connected to the automatic control unit. The heat pump and circulating fan of the box-type curing barn 6 are also connected to the automatic control unit. The automatic control unit controls the heating and cooling of the curing process within the box-type curing barn. Heating is achieved through the heat pump and circulating fan, while cooling is controlled by the automatic control unit. It also features overload protection for the circulating fan motor, automatically cutting off power to the circulating fan in case of phase loss or overload to prevent equipment damage. The tobacco loading device 3 is a box-type tobacco curing box, which includes a box frame and a protective net installed on the box frame. The protective net facilitates the curing and rehumidification of the tobacco in the box-type tobacco curing box. The box-type tobacco curing box can cure and rehumidify a large amount of tobacco leaves at one time, which speeds up the curing efficiency and reduces the curing and rehumidification cost.

[0026] In this embodiment, the high-temperature rehumidification outdoor structure includes a water tank 9 and a control box 11. The water tank 9 is located on the upper part of the trolley 7, and the control box 11 is located on the lower part of the trolley 7. The trolley 7 is also equipped with a water pump 10 that works with the water tank 9. The trolley 7 is a movable double-layer trolley 7. The water tank 9 is located above the water pump 10 and works with the water pump 10 to transport heated water to the high-temperature rehumidification indoor structure 2, providing a sufficient water source for the high-temperature rehumidification indoor structure 2. The water tank 9, water pump 10, and control box 11 are all located on the trolley 7, which is convenient to move and has high turnover. It can provide a high-temperature rehumidification outdoor structure 1 for curing barns with different requirements at different times. Staggered use can be used for multiple box-type curing barns 6, reducing the cost for tobacco farmers.

[0027] In this embodiment, the water tank 9 includes an inner tank and an outer tank located outside the inner tank. The outer tank is an insulated tank, while the inner tank is a high-temperature resistant, heat-conducting, and corrosion-resistant tank. A heating wire 21 is installed between the inner and outer tanks, evenly distributed within the cavity between them, enabling uniform and rapid heating of the water in the inner tank. A water inlet 18 is located at the top of the inner tank, with a water plug and an air vent to prevent explosion due to hot steam when the heating wire 21 heats the water. A water outlet 20 is located at the bottom of the inner tank, extending to the outside of the outer tank. A water outlet pipe 12 is installed on the water outlet 20, facilitating the flow of hot water out of the water tank 9. A temperature sensor 22 is also installed inside the inner tank to detect the water temperature within the tank. The water tank 9 of the dehumidifier can also be equipped with a water inlet valve controlled by a control box 11, enabling automatic water filling when connected to the water pipe 12.

[0028] In this embodiment, the control box 11 includes a casing, inside which is a control unit, preferably an MCU microcontroller unit. The control unit controls and connects to the water pump 10, heating wire 21, and temperature sensor 22. The control unit is electrically connected to the power supply assembly 19 located inside the casing. The power supply assembly 19 includes a battery and a power socket. The control unit can be powered by the battery or directly by the power socket, using existing electrical connection methods. The control unit inside the control box 11 can collect the temperature of the water tank 9 and maintain the water in the water tank 9 at a certain temperature through heating by the heating wire 21, ensuring the outlet water temperature and avoiding secondary heating after entering the box-type drying chamber 6. At the same time, the control unit controls the working time of the water pump 10. The display can show the data of the box-type drying chamber 6 collected by the automatic controller, the moisture recovery time of the high-temperature moisture recovery outdoor structure 1 collected by the control box 11, and the water temperature in the water tank 9, which is easy for the staff to observe and is clear.

[0029] In this embodiment, the housing is also equipped with a cooling fan that works with the control unit. The cooling fan is connected to the control unit and dissipates heat from it. The cooling fan is installed on the housing to ensure air circulation between the inside and outside of the housing, facilitating heat dissipation. The trolley 7 is equipped with a display, preferably a commercially available LCD screen. The LCD screen is connected to the automatic controller and control box 11 via a data cable and can display data from the automatic controller and control box 11, including but not limited to the temperature and humidity of the drying room, the temperature of the water tank 9, and the working time of the water pump 10. The LCD screen 8 is connected to the automatic controller and control box 11 and includes a mounting frame 14, a switch 15, and a panel 16. A bracket 17 is connected to the lower part of the mounting frame 14. The bracket 17 is connected to the push rod of the trolley 7 by a snap-fit, facilitating data acquisition by the operator. The trolley 7 is equipped with casters at the bottom. The casters are self-locking casters with a self-locking function, which facilitates the movement and positioning of the trolley 7.

[0030] In this embodiment, the high-temperature rehumidification chamber structure includes a water pipe 12, preferably a high-temperature resistant PVC water pipe 12. A layer of insulation cotton is wrapped around the PVC water pipe 12 to better transport water in the heated water tank 9. Several evenly distributed atomizing nozzles 13 are provided on the water pipe 12. The water inlet of the water pipe 12 is connected to the water tank 9 via a water pump 10, and the water outlet of the water pipe 12 is square-wavy and fixed to the top of the box-type curing barn 6 by a U-shaped clip. The atomizing nozzles 13 are evenly distributed on the top of the box-type curing barn 6. The high-temperature rehumidification chamber structure 2 uses atomizing nozzles 13 to atomize water into fine particles under the action of the high-pressure water pump 10. Under gravity, the water mist sinks evenly, and in conjunction with the heat pump and circulating fan of the box-type curing barn 6, increases the kinetic energy of the water vapor, further promoting the rehumidification of the tobacco leaves in the tobacco loading device 3.

[0031] like Figures 1-7 As shown in Example 2, a rehumidification method for an intelligent high-temperature tobacco rehumidification device used in a box-type curing barn includes the following steps: S1: The curing barn heat pump 5 heats and cures the tobacco leaves in the box-type curing barn 6, observes the curing status of the tobacco leaves in the tobacco loading device 3 to ensure that the curing requirements are met, and then adjusts the temperature and humidity in the box-type curing barn 6 to reach 55%. The specific process of curing tobacco leaves in the curing barn can be achieved using existing technology without special design. The tobacco loading device 3 and the box-type curing barn 6 work together to cure tobacco leaves, resulting in high curing efficiency.

[0032] S2: The heating wire 21 inside the outdoor structure 1 of the high-temperature rehumidification unit heats the water tank 9, raising the temperature of the water in the tank 9 to temperature x. In step S2, the heating temperature of the rehumidification machine is 100℃. When the temperature inside the water tank 9 drops below 95℃, the heating wire 21 reheats the water in the tank 9. By heating the rehumidification water with the heating wire 21, the temperature drop in the intensive drying room caused by the rehumidification water can be avoided, thus preventing the rehumidification effect from being affected.

[0033] S3: After the temperature and humidity in step S1 reach the required level, the control box 11 uses the water pump 10 to transport the water in the water tank 9 in step S2 to the high-temperature rehumidification chamber structure 2, and atomizes it through the atomizing nozzle 13 on the water pipe 12 of the high-temperature rehumidification chamber structure 2 to increase the humidity in the box-type curing barn 6. The curing barn rehumidification water is heated to 100°C and then atomized by the atomizing nozzle 13, which improves the atomization effect and avoids the curing barn needing to heat the atomized water. It also avoids the atomized water causing the temperature in the box-type curing barn 6 to drop during the auxiliary tobacco leaf rehumidification process, thus improving the rehumidification effect.

[0034] S4: When the humidity inside the box-type curing barn 6 reaches y, the indoor equipment of the high-temperature rehumidifier and the outdoor structure 1 of the high-temperature rehumidifier continue to work for z hours, and then stop. The humidity y is 95%, and the duration z is 30 minutes. When the humidity in the curing barn reaches 95%, both the outdoor mechanism of the high-temperature rehumidifier and the indoor structure 2 of the high-temperature rehumidifier work for a period of time. During the atomization process, they can continuously rehumidify the tobacco leaves. After the humidity in the box-type curing barn 6 reaches 95%, continuous operation can ensure the rehumidification effect of the tobacco leaves in the tobacco loading device 3, thus improving the rehumidification efficiency.

[0035] S5: By observing whether the tobacco leaves have reached the re-moistening standard, if the re-moistening standard is reached, the control box 11 controls the outdoor equipment of the high-temperature re-moistening machine to stop working; if the re-moistening standard is not reached, repeat steps S2~S5. After the tobacco leaves have reached the re-moistening standard, the tobacco loading device 3 can be removed, and subsequent operations such as bundling of the tobacco leaves can be carried out. The box-type curing barn 6 can continue to cure and re-moisten the tobacco leaves, improving the re-moistening efficiency.

[0036] like Figures 1-7As shown in Example 3, an intelligent high-temperature tobacco rehumidification device for a box-type curing barn includes a high-temperature rehumidification outdoor structure 1, a high-temperature rehumidification indoor structure 2, a trolley 7, a display 8, a water tank 9, a water pump 10, a control box 11, a water pipe 12, an atomizing nozzle 13, a mounting frame 14, a switch 15, a panel 16, a bracket 17, a water inlet 18, a power supply assembly 19, a water outlet 20, a heating wire 21, and a temperature sensor 22. The trolley 7 is welded from square steel and consists of two layers, with four casters at the bottom. The water tank 9 is installed on the upper layer of the trolley 7, with an inlet at the top and an outlet 20 on the lower side. The high-pressure water pump 10 is installed on one side of the lower layer of the trolley 7, with its inlet connected to the outlet 20 and the outlet 20 connected to the water pipe 12. The power supply for the high-pressure water pump 10 is provided by the control box 11. The control box 11 is installed on the other side of the lower layer of the trolley 7 and is used to provide power to the water tank 9 and the high-pressure water pump 10 and to control the operation of the equipment. The visual display is installed above the middle of the armrest of the trolley 7 and is used to display the temperature and humidity data of the box-type drying room 6. The water pipe 12 is a PVC water pipe, with one end connected to the water pump 10 and the other end fixed inside the box-type drying room 6. The atomizing nozzles 13 are evenly installed on the bottom side of the water pipes 12, with 14 atomizing nozzles 13 installed in each box-type drying room 6.

[0037] The water tank 9 is equipped with an electric heating wire and a temperature sensor 22. Twenty minutes before the rehumidification of the box-type drying room 6 begins, the equipment is started and the electric heating wire begins to heat the water in the water tank 9. When the water temperature reaches 100℃, the heating stops. When the water temperature is below 95℃, the heating starts again. During the operation, the water content in the box is always kept at no less than 1 / 5.

[0038] The control box 11 has a PVC casing with a cooling fan and power socket assembly on the side, and an internal MCU control unit. During operation, it controls the speed of the water pump 10 to control the amount of moisture atomized within the drying chamber. It connects to the automatic control unit 4 of the drying chamber 6 to collect temperature and humidity data and feeds the collected data back to the display. It controls the temperature of the water in the water tank 9; the temperature sensor 22 in the water tank 9 transmits the temperature data to the control box 11, which then controls the power and heating time of the heating wire 21 based on the temperature. The display is a visual operating interface used to issue working commands and display the temperature and humidity, rehumidification time, and hot water temperature within the drying chamber.

[0039] When the relative humidity inside the curing barn reaches 95%, the rehumidification equipment stops operating after 30 minutes. When the relative humidity drops below 90%, the equipment restarts. The rehumidification equipment requires manual inspection of the curing barn door to determine the moisture content of the tobacco leaves. If the moisture content meets the requirements, the equipment stops operating; otherwise, it continues operating. During the operation of the rehumidification equipment, the automatic control unit 4 of the box-type curing barn 6 and the circulating fan operate normally.

[0040] Specifically, the trolley is welded from square steel and consists of two layers, with four casters installed at the bottom. The display is mounted on the upper middle of the trolley's armrest via a device bracket and is used to display the temperature and humidity data inside the box-type drying room, the water temperature in the water tank, and the rehumidification time. The water tank is installed on the upper layer of the trolley, with an inlet at the top and an outlet on the lower side. Heating wires and a temperature sensor are installed inside, and a power supply and data cable interface are installed on the side of the water tank. The high-pressure water pump is installed on one side of the lower layer of the trolley, with its inlet connected to the outlet of the water tank and its outlet connected to the water pipe. The power supply for the high-pressure water pump is provided by the control box. The control box is installed on the other side of the lower layer of the trolley and is used to provide power to the water tank and the high-pressure water pump and to control the operation of the equipment. The water pipe is a PVC water pipe, with one end connected to the water pump and the other end fixed inside the box-type drying room. The atomizing nozzles are evenly installed on the bottom side of the water pipes, with one atomizing nozzle installed in each box-type drying room.

[0041] The working principle is as follows: water is boiled to 100℃, and then atomized by a high-pressure water pump. Combined with the heat pump and circulating fan in the box-type curing barn, the kinetic energy and penetrating power of the water vapor are increased, enabling the tobacco leaves to re-humidify efficiently and with high quality. To further improve efficiency, the equipment intelligently monitors and controls the re-humidification environment parameters and the operation of each component of the curing equipment. This invention achieves intelligent re-humidification in the box-type curing barn, improving the efficiency of tobacco leaf curing.

[0042] Specific implementation steps: After the tobacco leaves are cured, connect the water pipes, fill the water tank with water, connect the control box data cable to the automatic control unit of the box-type curing barn, connect the power supply, turn on the display, and set the temperature to 55℃ and the circulating fan to high speed on the automatic control unit of the box-type curing barn.

[0043] Click the start button on the device screen to heat the water in the tank. The water will reach 100°C in about 20 minutes, at which point heating will stop.

[0044] The high-pressure water pump starts running, pressurizing the boiled water in the water tank and pumping it into the inlet pipe to atomize it inside the drying room.

[0045] Heating will restart when the water temperature in the tank is below 95°C.

[0046] When the humidity in the curing barn reaches 95%, maintain this level for 30 minutes, then stop the water pump and open the barn door to observe the re-moistening of the tobacco leaves.

[0047] Repeat the above process until the rehumidification is complete. Using this method can significantly improve the rehumidification efficiency of the box-type drying room.

[0048] Table 1. Moisture regain effect of the present invention

[0049] It should be noted that this invention improves the equipment components and does not involve improvements to the circuits or control programs. This invention only controls the operation and shutdown of each device through the control unit. Since the MCU microcontroller used in the control unit is a mature automatic control system in industry, this invention will not elaborate on the circuit and control program content.

[0050] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for rehydration, characterized in that: The intelligent high-temperature tobacco rehumidification equipment for box-type curing barns is adopted. The intelligent high-temperature tobacco rehumidification equipment for box-type curing barns includes a box-type curing barn (6) and a high-temperature rehumidification outdoor structure (1). A high-temperature rehumidification indoor structure (2) is installed on the upper part of the box-type curing barn (6). The high-temperature rehumidification indoor structure (2) is connected to the high-temperature rehumidification outdoor structure (1). Several tobacco loading devices (3) for loading tobacco are provided inside the box-type curing barn (6). A curing barn heat pump (5) and a circulating fan are installed outside the box-type curing barn (6). The high-temperature humidity outdoor structure (1) includes a water tank (9) and a control box (11). The water tank (9) is located on the upper part of the trolley (7), and the control box (11) is located on the lower part of the trolley (7). The trolley (7) is also equipped with a water pump (10) that cooperates with the water tank (9). The water tank (9) includes an inner tank and an outer tank located outside the inner tank. A heating wire (21) is provided between the inner tank and the outer tank. A water inlet (18) is provided at the top of the inner tank, and a water outlet (20) is provided at the bottom of the inner tank. The water outlet (20) extends to the outside of the outer tank. A temperature sensor (22) is also provided inside the inner tank. The control box (11) includes a housing, and a control unit is provided inside the housing. The control unit controls the water pump (10), heating wire (21) and temperature sensor (22). The control unit is electrically connected to the power supply assembly (19) located inside the housing. The high-temperature rehumidification chamber structure (2) includes a water pipe (12), and the water pipe (12) is provided with a number of evenly distributed atomizing nozzles (13). The heating wire (21) is used to heat the water in the water tank (9) to 100°C. The water pump (10) is a high-pressure water pump used to transport the heated water through the water pipe (12) to the atomizing nozzle (13) for atomization. The curing barn heat pump (5) and the circulating fan are used to increase the kinetic energy of the water vapor and promote the absorption of moisture by the tobacco leaves in the box-type curing barn (6). The re-moistening method includes the following steps: S1: The curing room heat pump (5) heats and bakes the box-type curing room (6), observes the curing status of the tobacco leaves in the tobacco loading device (3) to make it meet the curing requirements, and then adjusts the temperature and humidity in the box-type curing room (6); S2: The heating wire (21) inside the high temperature and humidity outdoor structure (1) heats the water tank (9), and the water in the water tank (9) is heated to temperature x; S3: When the temperature and humidity in step S1 reach the required level, the control box (11) uses the water pump (10) to transport the water in the water tank (9) in step S2 to the high temperature rehumidification chamber structure (2), and atomizes it through the atomizing nozzle (13) on the water pipe (12) of the high temperature rehumidification chamber structure (2) to increase the humidity in the box-type drying room (6). S4: When the humidity inside the box-type drying room (6) reaches y, the high-temperature humidification indoor structure (2) and the high-temperature humidification outdoor structure (1) continue to work for z hours and then stop operating; S5: By observing whether the tobacco leaves have reached the re-moistening standard, if they have reached the re-moistening standard, the control box (11) controls the high-temperature re-moistening outdoor equipment to stop working; if they have not reached the re-moistening standard, repeat steps S2~S5. In step S2, the temperature x of the water in the water tank (9) is 100°C. When the temperature in the water tank (9) is lower than 95°C, the heating wire (21) reheats the water in the water tank (9).

2. The rehumidification method according to claim 1, characterized in that: The enclosure is also equipped with a cooling fan that works in conjunction with the control unit.

3. The rehumidification method according to claim 1 or 2, characterized in that: The trolley (7) is equipped with a display (8) and omnidirectional wheels at the bottom.

4. The rehumidification method according to claim 3, characterized in that: In step S4, the humidity y is 95% and the duration z is 30 minutes.

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