Movable baking equipment based on graphene heating technology and usage method

Abstract

The present invention discloses a portable baking device based on graphene heating technology, comprising a container body, an electrical control box, a blower, a graphene electric heating film assembly, an air guide plate, and movable wheels. The container body is provided with a container door at the left end, an air outlet at the lower right end, and a return air outlet at the upper right end. The electrical control box is provided on the right side of the container body and connected to the container body, and is connected to the interior of the container body through the air outlet. The electrical control box is provided with a ventilation window that faces the air outlet. The blower is installed in the electrical control box, and the air outlet end of the blower is connected to the return air outlet. In actual use, the device has the advantages of good tobacco baking quality, environmental protection, and ease of mobility. In addition, the present invention also provides a method for using the portable baking device based on graphene heating technology, which can effectively improve the baking quality of tobacco leaves and achieve the purposes of rapid moisture removal and temperature control.

Description

Technical Field

[0001] The present invention relates to the technical field of tobacco leaf baking equipment, and specifically to a movable baking equipment based on graphene heating technology; in addition, the present invention also relates to a method for using the movable baking equipment based on graphene heating technology. Background Art

[0002] Tobacco farmers often say, "Curing tobacco is like extracting treasure from fire. If you do it well, you'll have a whole oven of treasure; if you don't, it's like dung." This vividly illustrates the close relationship between curing and tobacco leaf quality. Curing has four effects on fresh tobacco leaves: first, it shapes the appearance of the leaves; second, it shapes the chemical quality of the leaves; third, it shapes the physical quality of the leaves; and fourth, it shapes the smoking quality of the leaves. Curing is therefore a key step in shaping tobacco leaf quality.

[0003] Tobacco leaf appearance quality refers to the quality factors that people can judge through their senses, usually through sight, touch, hearing, and smell. The six main appearance quality factors closely related to baking are color, chroma, oil content, identity, and damage and breakage.

[0004] The chemical quality of tobacco leaves is an intrinsic factor that determines the quality of smoke and the use value of tobacco leaves, and to a large extent determines the economic value of tobacco leaves. The chemical composition of tobacco leaves is closely related to the quality of tobacco products. The chemical composition of tobacco leaves is divided into two categories: organic compounds and inorganic compounds. Organic compounds: one category is carbohydrates (containing three elements: C, H, and O), such as total sugar, starch, cellulose, etc.; the other category is nitrogen-containing compounds (containing four elements: C, H, O, and N), such as proteins, amino acids, etc. Inorganic compounds: such as Cl, K, Mg, S, Ca, and other inorganic salts.

[0005] The physical quality of tobacco leaves: mainly includes combustibility, hygroscopicity, elasticity, filling capacity, weight per unit area, and stem content, which refers to some physical properties of tobacco leaves exhibited during the cigarette-making process.

[0006] Tobacco leaf smoking quality: During the tobacco leaf's yellowing process, a series of high-molecular substances break down into smaller molecules, forming the leaf's primary aroma compounds. During the color-fixing stage, these primary aroma compounds dehydrate and condense, forming aroma-producing substances. During the dry-bean stage, some aroma compounds decompose and volatilize, particularly at high temperatures above 68°C. The entire tobacco leaf-curing process stabilizes, enhances, and improves the quality of the fresh tobacco leaves, contributing to the comprehensive smoking quality of the first-cured tobacco leaves.

[0007] Therefore, the early tobacco baking process has a great influence on the later preparation of tobacco. Only after effective baking can the appearance quality, chemical quality, physical quality and smoking quality of tobacco leaves be guaranteed. However, the traditional tobacco baking process and traditional equipment are still used at present, and tobacco is baked by burning coal for heating, resulting in poor quality of baked tobacco leaves. At the same time, coal is a non-renewable resource. The polluted smoke generated by the energy consumed in the tobacco baking process has a very serious pollution to the atmosphere and is not environmentally friendly. The tobacco baking equipment in the existing technology also has the disadvantage of being inconvenient to move. Summary of the Invention

[0008] The purpose of the present invention is to provide a movable baking equipment based on graphene heating technology, which has the advantages of good tobacco baking quality, environmental protection and easy mobility in actual use; in addition, the present invention also provides a method for using the movable baking equipment based on graphene heating technology, which can effectively improve the baking quality of tobacco leaves and achieve the purpose of rapid dehumidification and temperature control.

[0009] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0010] The movable baking equipment based on graphene heating technology includes a container body, an electrical control box, a fan, a graphene electric heating film assembly, an air guide plate and a movable wheel, wherein the left end of the container body is provided with a container door, the lower side of the right end is provided with an air outlet, and the upper side of the right end is provided with a return air outlet; the electrical control box is arranged on the right side of the container body and connected to the container body, the electrical control box is communicated with the interior of the container body through the air outlet, and the electrical control box is provided with a ventilation window, which is directly opposite to the air outlet; the fan is installed in the electrical control box, and the air outlet end of the fan is connected to the return air outlet; the graphene electric heating film assembly is arranged in the container body and close to the top of the container body; the air guide plate is arranged in the container body, and the air guide plate has a trumpet-shaped structure, the small end of the air guide plate is connected to the return air outlet, and the large end is directly opposite to the graphene electric heating film assembly, and the graphene electric heating film assembly is used to heat the air; the movable wheel is arranged at the bottom of the container body;

[0011] Among them, the graphene electric heating film assembly includes a frame made of straight wood, an epoxy plate bracket arranged on the frame, and a number of graphene electric heating films arranged on the epoxy plate bracket; it is fixedly installed at the top position of the container body, and the large end of the air guide plate faces the graphene electric heating film.

[0012] For further optimization, a temperature sensor is provided in the container body, the temperature sensor is connected to a thermostat, and the thermostat is connected to the graphene electric heating film through an AC contactor.

[0013] Among them, the thermostat is a wireless remote thermostat.

[0014] For further optimization, a tobacco drying rack is provided inside the container body.

[0015] Among them, the container door is a double-opening container door.

[0016] Among them, two ventilation shutters are set at the bottom of the right side wall of the container body.

[0017] For further optimization, a wire mesh is provided at the air outlet.

[0018] For further optimization, an inspection door is set on the right side of the electrical control box.

[0019] In addition, the present invention also discloses a method for using a movable tobacco baking device based on graphene heating technology, including a hot air circulation baking step and a moisture removal step during tobacco curing; the details are as follows:

[0020] When the ventilation windows and ventilation shutters are closed, hot air circulation can be formed inside the container to achieve the purpose of baking tobacco leaves;

[0021] When the ventilation window is opened and the ventilation shutter is closed, the fan can simultaneously realize the circulation of hot air and draw fresh air from the outside into the container body, thereby achieving the purpose of introducing fresh air. At the same time, the introduced fresh air can also achieve the purpose of temperature regulation.

[0022] When both the ventilation windows and ventilation shutters are opened, fresh air from the outside can be introduced into the interior of the container at the same time, and the internal moisture can be discharged from the ventilation shutters to achieve the purpose of dehumidification.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The invention mainly consists of a container body, a container body, a fan, an air guide plate and moving wheels. Its overall appearance and structure are a container structure, which makes it compact. At the same time, by arranging walking wheels at the bottom of the container body, it is more convenient to move and the flexibility of the equipment is improved. The electrical control box is connected to the interior of the container body through the air outlet and the return air outlet, and the air inside the container body is circulated by the fan. Under the action of the air guide plate, the air can directly act on the graphene electric heating film assembly, and the graphene electric heating film assembly heats the air by heat radiation and then enters the interior of the container body to bake tobacco leaves. Since the air inside the container body can achieve the purpose of circulation, the tobacco leaves are heated more evenly, which can improve the quality of tobacco leaf baking. Compared with the traditional method of burning coal to bake tobacco, the invention is more environmentally friendly.

[0025] At the same time, in actual use, straight wood is used to make a skeleton, and the skeleton is hung on the top of the container body. The graphene heating film is set on the epoxy board bracket and then fixed on the skeleton. In this way, it is beneficial for the graphene heating film to achieve the purpose of heat dissipation on both sides. At the same time, the above structure also increases the safety level of the graphene heating film. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 It is a schematic diagram of the overall structure of the invention.

[0028] Figure 2 Schematic diagram of the internal structure of the invention.

[0029] Figure 3 For invention Figure 2 Cross-sectional view of the middle aa plane.

[0030] Figure 4 For invention Figure 1 Left view of .

[0031] Figure 5 For invention Figure 1 Right view of .

[0032] Figure 6 Schematic diagram of power distribution for the invented graphene electric heating film.

[0033] Figure 7 This is a schematic diagram of the overall structure of the invented graphene heating structure.

[0034] Figure 8 For invention Figure 7 side view.

[0035] Reference numerals:

[0036] 1-Container body, 2-Container door, 3-Air outlet, 4-Return air outlet, 5-Electrical control box, 6-Ventilation window, 7-Fan, 8-Graphene electric heating film assembly, 9-Air guide plate, 10-Current smoke rack, 11-Ventilation shutter, 12-Wire mesh, 13-Inspection door, 14-Frame, 15-Epoxy board bracket, 16-Graphene electric heating film, 17-Thermostat, 18-Electric heating film bus connector, 19-AC contactor distribution box, 20-Observation window, 21-First heating device, 22-Frame, 23-Graphene heating assembly, 24-Graphene heating sheet, 25-Insulation package, 26-Slot, 27-U-shaped limiter, 28-Support rod, 29-Steel, 30-High-temperature cable hole. DETAILED DESCRIPTION

[0037] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0038] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the embodiments of the present invention.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0040] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0041] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] The disclosure below provides many different embodiments or examples for implementing different structures of the embodiments of the present invention. In order to simplify the disclosure of the embodiments of the present invention, the components and configurations of specific examples are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. In addition, the embodiments of the present invention may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or configurations discussed.

[0043] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0044] Example 1

[0045] As the instruction manual Figure 1-8 As shown, this embodiment discloses a movable baking device based on graphene heating technology, including a container body 1, an electrical control box 5, a fan 7, a graphene electric heating film assembly 8, an air guide plate 9 and a moving wheel. The left end of the container body 1 is provided with a container door 2, the lower side of the right end is provided with an air outlet 3, and the upper side of the right end is provided with an air return port 4; the electrical control box 5 is provided on the right side of the container body 1 and is connected to the container body 1. The electrical control box 5 is connected to the inside of the container body 1 through the air outlet 3. A ventilation window 6 is provided, and the ventilation window 6 is facing the air outlet 3; a fan 7 is installed in the electrical control box 5, and the air outlet end of the fan 7 is connected to the return air outlet 4; a graphene electric heating film assembly 8 is arranged in the container body 1 and close to the top of the container body 1; an air guide plate 9 is arranged in the container body 1, and the air guide plate 9 has a trumpet-shaped structure, the small end of the air guide plate 9 is connected to the return air outlet 4, and the large end is facing the graphene electric heating film assembly 8, and the graphene electric heating film assembly 8 is used to heat the air; a moving wheel is arranged at the bottom of the container body 1;

[0046] Among them, the graphene electric heating film assembly 8 includes a frame 14 made of straight wood, an epoxy plate bracket 15 arranged on the frame 14, and a plurality of graphene electric heating films 16 arranged on the epoxy plate bracket 15; it is fixedly installed at the top position inside the container body 1, and the large end of the air guide plate 9 is facing the graphene electric heating film 16; it is convenient for the air to flow to the graphene electric heating film 16 and heat the air by heat radiation.

[0047] The invention mainly consists of a container body 1, a fan 7, an air guide plate 9 and moving wheels. Its overall appearance and structure are a container structure, which has the advantage of a compact structure. At the same time, by arranging walking wheels at the bottom of the container body 1, it is more convenient to move and the flexibility of the equipment is improved. The electrical control box 5 is connected to the interior of the container body 1 through the air outlet 3 and the return air outlet 4, and the air inside the container body 1 is circulated by the fan 7. Under the action of the air guide plate 9, the air can directly act on the graphene electric heating film assembly 8, and the graphene electric heating film assembly 8 heats the air by heat radiation and then enters the interior of the container body 1 to bake the tobacco leaves. Since the air inside the container body 1 can achieve the purpose of circulating, the tobacco leaves are heated more evenly, which can improve the quality of tobacco baking. Compared with the traditional method of burning coal to bake tobacco, the invention is more environmentally friendly.

[0048] At the same time, in actual use, straight wood is used to make the skeleton 14, the skeleton 14 is hung on the top of the container body 1, and the graphene electric heating film 16 is set on the epoxy plate bracket 15 and then fixed on the skeleton 14. In this way, it is beneficial for the graphene electric heating film 16 to achieve the purpose of heat dissipation on both sides. At the same time, the above structure also increases the safety level of the graphene electric heating film 16.

[0049] For further optimization, a temperature sensor is provided in the container body 1 , and the temperature sensor is connected to a thermostat 17 , and the thermostat 17 is connected to the graphene electric heating film 16 via an AC contactor.

[0050] In this way, in actual use, the working state of the graphene heating film 16 can be controlled according to the temperature controller 17 and the AC contactor, thereby achieving temperature control.

[0051] It should be noted that, in actual use, a time relay can also be used to control the working state of the graphene electric heating film 16, which will not be described in detail here.

[0052] Among them, the thermostat 17 is a wireless remote thermostat; in this way, in actual use, the thermostat 17 can be connected to the mobile phone APP, and the staff can achieve the purpose of remote control through the mobile phone, which is more convenient to operate; a mobile computer or desktop computer can also be used to achieve connection with the thermostat 17.

[0053] In order to further illustrate the invention, the power distribution principle of the inventive graphene electric heating film 16 is further explained below:

[0054] In actual operation, at least two graphene heating films 16 are connected together through the heating film busbar connector 18, and the graphene heating film 16 is connected to the AC contactor distribution box 19 through the heating film busbar connector 18 to form a power supply circuit W1, and the AC contactor distribution box 19 is used to distribute power to the AC contactor; in this embodiment, 9 power supply circuits are formed, namely W1-W9, and the thermostat 17 is connected to the AC contactor distribution box 19; in this way, in actual use, the temperature sensor transmits the detected temperature information to the thermostat 17 in real time, and the thermostat 17 controls the on and off of the power supply circuits W1-9, so that the purpose of automatic temperature control can be achieved; at the same time, the purpose of rapid cooling can also be achieved by setting the ventilation window 6; such a setting can also ensure that when one of the power supply circuits fails, it will not affect other power supply circuits.

[0055] A tobacco curing rack 10 is provided inside the container body 1 ; the tobacco curing rack 10 facilitates evenly placing tobacco leaves in the container body 1 according to the direction of air flow.

[0056] Further optimization, the container door 2 is a double-opening container door; the double-opening container door 2 makes it more convenient to enter and exit the tobacco drying rack 10.

[0057] Wherein, an observation window 20 is provided on the container body 1;

[0058] For further optimization, two ventilation shutters 11 are provided at the bottom of the right side wall of the container body 1; in this way, the purpose of rapid moisture removal can be achieved by setting the two ventilation shutters 11; during the tobacco curing process, fresh air can be added or the internal hot and humid air can be discharged according to the curing stage.

[0059] In actual use, a first running wheel is provided at the bottom of the tobacco curing rack 10. In this way, tobacco leaves can be placed on the tobacco curing rack 10 from the outside, and then the tobacco curing rack 10 can be pushed into the container body 1, avoiding the need to take and place tobacco leaves in the container body 1, and the operation is more convenient.

[0060] As a further optimization, a wire mesh 12 is provided at the air outlet 3; in this way, it can prevent the tobacco leaves inside from being carried to the fan 7 when the air flows inside the container body 1, causing damage to the fan 7.

[0061] For further optimization, in some embodiments, an inspection door 13 is provided on the right side of the electrical control box 5, which is more convenient during inspection.

[0062] Example 2

[0063] This embodiment discloses a method for using a movable baking device based on graphene heating technology, specifically a cyclic baking and rapid dehumidification and cooling method.

[0064] The tobacco leaf curing process includes three stages:

[0065] During the yellowing period, a series of high-molecular substances decompose into small-molecule substances, forming the original aroma substances of tobacco leaves;

[0066] During the color fixing period, the original aroma substances dehydrate and condense to form aroma-causing substances;

[0067] During the dry-bean period, some aroma compounds decompose and volatilize, especially when cured at temperatures above 68°C. The entire tobacco curing process stabilizes, enhances, and improves the quality of fresh tobacco, contributing to the overall smoking quality of the first-cured tobacco.

[0068] During the yellowing stage:

[0069] The starting temperature is 32°C, and the temperature is raised by 1°C per hour to 35-36°C. At the same time, the temperature difference between dry and wet is maintained at 1-2°C, and the temperature is kept steady until the tobacco leaves become soft and collapse on the rack. The lower leaves need 10-15 hours, the middle leaves 15-20 hours, and the upper leaves 20-25 hours.

[0070] Then raise the temperature to 38-39℃, maintain the wet-bulb temperature at 36-37℃, and keep it steady until the tobacco leaves turn yellow and have blue veins. Then raise the temperature to 42℃, maintain the wet-bulb temperature below 37℃, and keep it steady for 10-15 hours to remove moisture in advance. Then raise the temperature to enter the color-fixing period.

[0071] Among them, the yellowing time is: 60-72 hours for lower leaves, 48-60 hours for middle leaves, and 36-48 hours for upper leaves.

[0072] During the color fixing period:

[0073] When the tobacco leaves turn yellow with green veins and become soft, raise the temperature in the flue-curing room to 45-48°C at a rate of 1°C every 2-3 hours, control the temperature at 37-39°C to remove moisture, and continue curing until the leaves turn yellow with yellow veins and small rolls. In the loose leaf stacking flue-curing room, maintain the temperature until the leaves and veins turn completely yellow.

[0074] Then raise the temperature to 50-52℃, maintain the temperature at 38-40℃, and bake until the tobacco leaves are hooked and curled on the large rolls. Raise the temperature to 54-55℃ and keep the temperature steady for more than 12 hours before raising the temperature again to reduce the color difference between the front and back of the tobacco leaves and promote the aroma of the tobacco leaves. The humidity temperature of the loose leaf stacking curing room should be based on the minimum humidity required by the stage, and the temperature should not exceed the requirement throughout the whole process.

[0075] It should be noted that for tobacco leaves with large differences in quality, they are required to be heated at 45-48℃ for 2-3 hours, and then the temperature can be raised after the tobacco veins are completely yellow, so as to reduce the production of green veins in tobacco leaves after roasting.

[0076] During the dry period,

[0077] After the tobacco leaves reach the color requirements, the temperature is quickly raised to above 60℃, and the maximum should not exceed 68℃. The maximum wet bulb temperature should not exceed 43℃, generally 39-42℃, and baked until the tobacco leaves are completely dry, generally 30-40 hours.

[0078] There are high requirements for temperature during the yellowing stage, yellowing stage and dry tendon stage, so rapid moisture removal and temperature control are very important for improving the quality of tobacco baking.

[0079] When tobacco leaves are cured using the movable curing equipment based on graphene heating technology in Example 1:

[0080] When the ventilation window 6 and the ventilation shutter 11 are closed, hot air circulation can be formed inside the container body 1 to achieve the baking of tobacco leaves;

[0081] When the ventilation window 6 is opened and the ventilation shutter 11 is closed, the fan 7 can simultaneously realize the circulation of hot air and at the same time suck the fresh air from the outside into the container body 1, thereby achieving the purpose of introducing fresh air. At the same time, the introduced fresh air can also achieve the purpose of temperature regulation.

[0082] When the ventilation window 6 and the ventilation shutter 11 are both opened, fresh air from the outside can be introduced into the interior of the container body 1 at the same time, and the internal moisture can be discharged from the ventilation shutter 11, thereby achieving the purpose of dehumidification.

[0083] In this way, the purpose of rapid temperature adjustment and moisture removal can be achieved during the actual baking process, so as to adapt to the temperature and humidity requirements of tobacco leaves in different baking periods, improve the convenience of tobacco baking, and at the same time improve the quality of tobacco leaf baking.

[0084] Example 3

[0085] This embodiment is further optimized on the basis of the first embodiment. In this embodiment, a first heating device 21 is further provided at the lower end of the fan 7;

[0086] The first heating device 21 includes: a frame 22, and a plurality of graphene heating components 23 equidistantly and detachably arranged on the frame 22;

[0087] The graphene heating component 23 includes a graphene heating sheet 24, an insulating package 25 for encapsulating the graphene heating sheet 24, and a slot 26 provided on the frame 22; the insulating package 25 is slidably provided in the slot 26, and the graphene heating sheet 24 is equipped with a separate AC contactor, which is connected to the thermostat 17. In actual use, the graphene heating sheet 24 is controlled by powering it on or off. At the same time, the slot 26 and the insulating package 25 are slidably provided, so that in actual use, damaged or aged graphene heating sheets 24 can be more easily replaced; users can use it more conveniently and the replacement efficiency is higher.

[0088] In this way, when rapid temperature increase is required in actual use, not only the graphene electric heating film assembly 8 arranged on the top of the container body 1 can be used to heat the air, but also the first heating device 21 arranged in the electrical control box 5 can be used to heat the air, thereby improving the heating efficiency.

[0089] Further optimization, the insulating package 25 is a ceramic insulating package; the use of ceramic packaging has the advantages of good insulation and airtightness, and the chip and circuit are not affected by the surrounding environment. More importantly, its airtightness meets the high requirements of high sealing. At the same time, its thermal expansion coefficient is small and the thermal conductivity is high, which avoids affecting thermal radiation.

[0090] The slot 26 is a groove provided on the frame 22 ; the insulating package 25 is installed by providing the slot 26 on the frame 22 , thereby achieving the installation of the graphene heating sheet 24 .

[0091] As an option, a number of U-shaped limit members 27 are provided on the frame 22, and the notch in the middle of the U-shaped limit member 27 forms the slot 26; a support rod 28 is provided at the bottom of the frame 22; in actual use, the U-shaped limit members 27 are symmetrically arranged on the frame 22, and the slot 26 on the U-shaped limit member 27 can form a slide, and the provided support rod 28 will support the graphene heating component 23, thereby facilitating the insertion of the graphene heating component 23.

[0092] For further optimization, a hollow steel section 29 is provided at the bottom of the frame 22, and a high-temperature cable hole 30 is provided on the upper surface of the steel section 29. The cable connected to the power interface of the graphene heating plate 24 passes through the high-temperature cable hole 30 and is led out from the inside of the steel section 29 and then connected to the AC contactor.

[0093] In this way, the hollow steel 29 can be used to accommodate the cable connected to the power interface of the graphene heating plate 24, which can protect the cable and extend the service life of the cable.

[0094] Among them, the outside of the cable connected to the power interface of the graphene heating plate 24 is covered with a heat insulation sleeve; the provided heat insulation sleeve can further improve the heat insulation effect.

[0095] The spacing between adjacent graphene heating components 23 is 10-20 cm; thus, adjacent graphene heating components 23 will form a heating channel, and when air flows through the heating channel, thermal radiation heating of the air can be achieved.

[0096] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0097] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. The portable baking equipment based on graphene heating technology is characterized by: The invention comprises a container body, an electrical control box, a fan, a graphene electric heating film assembly, an air guide plate and a moving wheel, wherein the left end of the container body is provided with a container door, the lower side of the right end is provided with an air outlet, and the upper side of the right end is provided with a return air outlet; the electrical control box is arranged on the right side of the container body and connected to the container body, the electrical control box is communicated with the interior of the container body through the air outlet, and the electrical control box is provided with a ventilation window, which is directly opposite to the air outlet; the fan is installed in the electrical control box, and the air outlet end of the fan is communicated with the return air outlet; the graphene electric heating film assembly is arranged in the container body and close to the top of the container body; the air guide plate is arranged in the container body, and the air guide plate has a trumpet-shaped structure, the small end of the air guide plate is connected to the return air outlet, and the large end is directly opposite to the graphene electric heating film assembly, and the graphene electric heating film assembly is used to heat the air; the moving wheel is arranged at the bottom of the container body; The graphene electric heating film assembly includes a frame made of straight wood, an epoxy plate bracket set on the frame, and a plurality of graphene electric heating films set on the epoxy plate bracket; it is fixedly installed at the top position of the container body, and the large end of the air guide plate faces the graphene electric heating film; The usage method is as follows, specifically the cycle baking and rapid dehumidification and cooling method. The tobacco leaf curing process includes three stages: During the yellowing stage: The starting temperature is 32°C, and the temperature is raised by 1°C per hour to 35-36°C, maintaining a 1-2°C difference between the dry and wet temperatures. The temperature is maintained until the tobacco leaves become soft and collapse; the lower leaves need 10-15 hours, the middle leaves 15-20 hours, and the upper leaves 20-25 hours. The temperature is then raised to 38-39°C, with the wet-bulb temperature maintained at 36-37°C, and the temperature is maintained until the tobacco leaves turn yellow, with yellow leaves and blue veins. The temperature is then raised to 42°C, with the wet-bulb temperature within 37°C, and the temperature is maintained for 10-15 hours to remove moisture in advance. The temperature is then raised to enter the color-fixing period. The yellowing time is 60-72 hours for the lower leaves, 48-60 hours for the middle leaves, and 36-48 hours for the upper leaves. During the color fixing period: When the tobacco leaves reach yellow flakes and green veins and become soft, the temperature of the flue-curing room is raised to 45-48℃ at a rate of 1℃ every 2-3 hours, and the dehumidification temperature is controlled at 37-39℃. The tobacco leaves are cured until they change to yellow flakes, yellow veins, and small rolls. The loose leaf stacking flue-curing room is kept at a steady temperature until the tobacco leaves and tobacco veins are completely yellow; then the temperature is raised to 50-52℃, and the temperature is maintained at 38-40℃. The tobacco leaves are cured until the tips of the leaves are curled and the large rolls are rolled. The temperature is raised to 54-55℃ and kept steady for more than 12 hours before the temperature is raised again to reduce the color difference between the front and back of the tobacco leaves and promote the aroma of the tobacco leaves. The humidity temperature of the loose leaf stacking flue-curing room is based on the minimum humidity required by the stage, and the temperature cannot exceed the requirement throughout the process. For tobacco leaves with large differences in quality, it is required to be kept at 45-48℃ for 2-3 hours, and then the temperature is raised after the tobacco veins are completely yellow to reduce the formation of green veins in tobacco leaves after curing. During the dry vein stage: After the tobacco leaves reach the color setting requirements, quickly raise the temperature to above 60℃, but not exceeding 68℃, and the wet bulb temperature should not exceed 43℃. Bake until the tobacco leaves are completely dry, which takes 30-40 hours. When curing tobacco leaves: When the ventilation windows and ventilation shutters are closed, hot air circulation can be formed inside the container to achieve the purpose of baking tobacco leaves; When the ventilation window is opened and the ventilation shutter is closed, the fan can simultaneously realize the circulation of hot air and draw fresh air from the outside into the container body, thereby achieving the purpose of introducing fresh air. At the same time, the introduced fresh air can also achieve the purpose of temperature regulation. When both the ventilation windows and ventilation shutters are opened, fresh air from the outside can be introduced into the container body at the same time, and the internal moisture can be discharged through the ventilation shutters to achieve the purpose of dehumidification; During the actual baking process, the purpose of rapid temperature adjustment and moisture removal can be achieved, so as to adapt to the temperature and humidity requirements of tobacco leaves in different baking periods, improve the convenience of tobacco baking, and at the same time improve the quality of tobacco leaf baking; a temperature sensor is provided in the container body, and the temperature sensor is connected to a thermostat, and the thermostat is connected to the graphene electric heating film through an AC contactor.

2. The portable baking device based on graphene heating technology according to claim 1, characterized in that: The thermostat is a wireless remote thermostat.

3. The portable baking device based on graphene heating technology according to claim 1, characterized in that: A tobacco drying rack is provided inside the container body.

4. The portable baking device based on graphene heating technology according to claim 1, characterized in that: The container door is a double-opening container door.

5. The portable baking device based on graphene heating technology according to claim 1, characterized in that: Two ventilation shutters are provided at the bottom of the right side wall of the container body.

6. The portable baking device based on graphene heating technology according to claim 1, characterized in that: A wire mesh is provided at the air outlet.

7. The portable baking device based on graphene heating technology according to claim 1, characterized in that: There is an inspection door on the right side of the electrical control box.

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