A rock tea roasting machine based on graphene electric heating and intelligent control of fragrance

Abstract

The application discloses a rock tea baking machine based on graphene electric heating and intelligent control of fragrance, which comprises a cabinet body, a baking assembly, an air circulation assembly and a driving assembly. The cabinet body is provided with a first storage cavity and a second storage cavity arranged in sequence along the vertical direction. The baking assembly is arranged in the first storage cavity and comprises a screen frame group, a green tea drying group and a heating group. The green tea drying group comprises a plurality of green tea drying trays arranged at intervals along the vertical direction. The green tea drying trays are arranged on the screen frame group. The heating group is arranged on the inner side wall of the cabinet body and located in the first storage cavity. The air circulation assembly is arranged above the first storage cavity and is used for blowing air. The driving assembly is arranged in the second storage cavity and is in transmission connection with the screen frame group to drive the rotation of the screen frame group. The material is dynamically heated by the rotation of the screen frame group and the green tea drying trays. Meanwhile, the air circulation assembly blows air to form an air flow from top to bottom, which exchanges heat with the rotating rock tea, realizes the dynamic and uniform distribution of the heat field in the baking machine and effectively improves the uniformity and controllability of rock tea baking.

Description

Technical Field

[0001] This invention relates to the field of tea processing technology, and in particular to a rock tea roasting machine based on graphene electric heating and intelligent aroma enhancement. Background Technology

[0002] Roasting is a crucial process that determines the stability of the aroma, flavor, and mouthfeel of Wuyi rock tea. While traditional charcoal roasting imparts a unique flavor to tea, its production process heavily relies on manual experience, resulting in inherent drawbacks such as low temperature control precision, low roasting efficiency, high energy consumption, and difficulty in ensuring batch-to-batch quality consistency. To meet the demands of large-scale production, modern electric roasting equipment has become increasingly common. Although it has improved in terms of temperature control automation and production efficiency, its heating method is often relatively simple, and the uniformity of the heat field distribution is insufficient. It is difficult to simulate the unique heat radiation and slow-burning penetration process of charcoal roasting, leading to a gap in flavor levels between the roasted tea and traditional products. Existing technologies have also attempted to create "charcoal-electric integrated" equipment that simply superimposes charcoal and electric heating, but the two heat sources have not been deeply integrated spatially and thermodynamically to form a synergistic heat field. Furthermore, the degree of automation control is limited, and problems such as uneven heat distribution, high energy consumption, and imprecise flavor control are still prevalent. Summary of the Invention

[0003] In view of this, the purpose of this invention is to propose a rock tea roasting machine based on graphene electric heating and intelligent aroma enhancement. By constructing a roasting environment with the synergistic effect of a multi-layer rotating material bearing structure and a controllable spiral airflow, a highly uniform distribution of the heat field and precise intelligent control of process parameters can be achieved during the roasting process of rock tea.

[0004] To achieve the aforementioned technical objectives, the technical solution adopted by this invention is as follows: a rock tea roasting machine based on graphene electric heating and intelligent aroma enhancement, comprising a cabinet, a roasting component, a wind circulation component, and a drive component. The cabinet has a first storage cavity and a second storage cavity arranged sequentially along a vertical direction, with the first storage cavity positioned above the second storage cavity. The roasting component is disposed within the first storage cavity and includes a sieve assembly, a sun-drying assembly, and a heating assembly. The sun-drying assembly includes multiple sun-drying trays spaced apart along a vertical direction, and the sieve assembly is equipped with sun-drying trays. The heating assembly is disposed on the inner side wall of the cabinet and is located in the area of ​​the first storage cavity. The wind circulation component is positioned above the first storage cavity and is used for blowing air. The drive component is disposed within the second storage cavity and is connected to the sieve assembly via a transmission connection, used to drive the sieve assembly to rotate.

[0005] In some embodiments, the screen frame assembly includes a first support rod, a second support rod, a third support rod, a first connecting shaft, and a second connecting shaft. The first support rod has a U-shaped structure. The second support rod is angled to the projection of the first support rod in the vertical direction, and the second support rod also has a U-shaped structure. The third support rod is angled to the projection of the second support rod in the vertical direction, and the third support rod also has a U-shaped structure. The ends of the first, second, and third support rods on one side intersect at a point, denoted as the first connection point. The ends of the first, second, and third support rods on the other side intersect at another point, denoted as the second connection point. The first connecting shaft is located at the first connection point. The second connecting shaft is located at the second connection point.

[0006] In some embodiments, the heating assembly includes a first graphene plate, a second graphene plate, and a third graphene plate, wherein the first graphene plate is disposed on the left side of the first storage cavity; the second graphene plate is disposed on the right side of the first storage cavity; and the third graphene plate is disposed on the rear side of the first storage cavity.

[0007] In some embodiments, a third storage cavity is provided at the top of the cabinet. The cabinet also includes a first horizontal partition, a second horizontal partition, a first vertical partition, and a second vertical partition. The first horizontal partition is disposed above the first storage cavity to separate the third storage cavity. The second horizontal partition is disposed below the first storage cavity to separate the second storage cavity, and the second storage cavity is not connected to the first storage cavity. The first vertical partition is disposed on the left side of the first storage cavity and is connected to the left side of the first horizontal partition to form a first air guide cavity. The first vertical partition is provided with multiple first air guide channels to guide the air in the third storage cavity into the first storage cavity. The second vertical partition is disposed on the right side of the first storage cavity and is connected to the right side of the first horizontal partition to form a second air guide cavity. The second vertical partition is provided with multiple second air guide channels to guide the air in the third storage cavity into the first storage cavity.

[0008] In some embodiments, the air circulation assembly includes a fan and a plurality of small fans. The fan is disposed above the cabinet and its outlet is connected to the third storage cavity. The plurality of small fans are disposed at the top of the first storage cavity and on the lower surface of the first partition. The plurality of small fans are distributed circumferentially along the first partition and their outlets face the screen frame assembly.

[0009] In some embodiments, the left side of the second partition plate is provided with a first air outlet and a second air outlet, which are arranged in a front-to-back direction; the right side of the second partition plate is provided with a third air outlet and a fourth air outlet, which are arranged in a front-to-back direction; a first exhaust port is provided on the rear side of the cabinet near the second air outlet, and a second exhaust port is provided on the rear side of the cabinet near the fourth air outlet; the air circulation assembly also includes a first air outlet channel, a second air outlet channel, a first exhaust fan, and a second exhaust fan, the first air outlet channel including a first branch pipe, a second branch pipe, and a third exhaust fan. A main air outlet is provided, with a first branch pipe connected to a first air outlet, a second branch pipe connected to a second air outlet, and the main air outlet is connected to both the first and second branch pipes, and is also connected to a first exhaust port. A second air outlet channel includes a third branch pipe, a fourth branch pipe, and a second main air outlet. The third branch pipe is connected to a third air outlet, the fourth branch pipe is connected to a fourth air outlet, and the main air outlet is connected to both the third and fourth branch pipes, and is also connected to a second exhaust port. A first exhaust fan is located at the first exhaust port, and a second exhaust fan is located at the second exhaust port.

[0010] In some embodiments, the drive assembly includes a drive unit, a drive wheel, a driven wheel, a belt, and a coupling. The drive unit is disposed within the second storage cavity; the drive wheel is sleeved on the output end of the drive unit; the driven wheel is disposed on the input end of the screen frame assembly; the belt is sleeved on the drive wheel and the driven wheel; and the coupling is disposed between the driven wheel and the input end of the screen frame assembly.

[0011] In some embodiments, the rock tea roasting machine based on graphene electric heating and intelligent aroma enhancement further includes an upper cabinet door, a first sealing strip, a lower cabinet door, a second sealing strip, and multiple casters. The upper cabinet door is disposed on the cabinet body and located in the area where the first storage cavity is located, and a viewing window is provided on the upper cabinet door. The first sealing strip is disposed around the circumference of the upper cabinet door. The lower cabinet door is disposed on the cabinet body and located in the area where the second storage cavity is located. The second sealing strip is disposed around the circumference of the lower cabinet door. Multiple casters are disposed on the lower surface of the cabinet body and are disposed around the circumference of the cabinet body.

[0012] In some embodiments, the rock tea roasting machine based on graphene electric heating and intelligent aroma enhancement also includes a temperature sensor and a control unit. The temperature sensor is disposed in the first storage cavity; the control unit is electrically connected to the temperature sensor and the heating group respectively.

[0013] In some embodiments, the rock tea roasting machine based on graphene electric heating and intelligent aroma enhancement also includes a heat insulation layer disposed on the inner sidewall of the first storage cavity.

[0014] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: The present invention provides a rock tea roasting machine based on graphene electric heating and intelligent aroma enhancement, including a cabinet, a roasting component, a wind circulation component, and a drive component. The cabinet has a first storage cavity and a second storage cavity arranged sequentially in a vertical direction. The roasting component is located in the first storage cavity and includes a sieve assembly, a sun-drying assembly, and a heating assembly. The sun-drying assembly includes multiple sun-drying trays arranged at intervals in a vertical direction, and the sieve assembly is equipped with sun-drying trays. The heating assembly is located on the inner side wall of the cabinet and in the area of ​​the first storage cavity. The wind circulation component is located above the first storage cavity for blowing air. The drive component is located in the second storage cavity and is connected to the sieve assembly for driving its rotation. The present invention dynamically heats the material by rotating the sieve assembly and sun-drying trays, while the wind circulation component blows air to form a downward airflow, which exchanges heat with the rotating rock tea, realizing a dynamic and uniform distribution of the heat field inside the roasting machine, effectively improving the uniformity and controllability of rock tea roasting. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the 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.

[0016] Figure 1 This is a schematic diagram of the specific structure of the rock tea roasting machine described in the specific implementation method; Figure 2 This is a schematic diagram of the specific structure of the sieve frame group and the sun-drying group described in the specific implementation method; Figure 3 This is a schematic diagram of the specific structure of the baking component and the driving component described in the specific implementation method; Figure 4 This is a side structural cross-sectional view of the rock tea roasting machine described in the specific embodiment; Figure 5 This is a schematic diagram of the specific structure of the cabinet described in the specific implementation method.

[0017] The reference numerals for the above figures are as follows: 1. Cabinet; 11. First storage chamber; 12. Second storage chamber; 13. Third storage chamber; 14. First transverse diaphragm; 15. Second transverse diaphragm; 151. First air outlet; 152. Second air outlet; 16. First vertical partition; 161. First air guide channel; 17. First air guide cavity; 18. First exhaust port; 2. Baking components; 21. Screen frame assembly; 211. First support rod; 212. The second support rod; 213. The third support rod; 214. First connecting shaft; 22. Sun-dried Greens Group; 221. Sun-dried green plates; 23. Heating unit; 231. The first graphene board; 232. The second graphene plate; 233. The third graphene plate; 3. Air circulation components; 31. Fan; 32. Small fan; 33. First air outlet duct; 331. First branch pipe; 332. Second branch pipe; 333, First Ventilation Supervisor; 4. Driver components; 41. Drive unit; 42. Drive wheel; 43. Driven wheel; 44. Belt; 45. Couplings; 5. Upper cabinet doors; 6. Lower cabinet doors; 7. Casters; 8. Temperature sensor; 9. Control unit. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are for illustrative purposes only and do not limit the scope of the invention. Similarly, the following embodiments are only some, not all, embodiments of the present invention, and all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1 to 5This embodiment provides a rock tea roasting machine based on graphene electric heating and intelligent aroma enhancement, including a cabinet 1, a roasting component 2, a wind circulation component 3, and a drive component 4. The cabinet 1 has a first storage cavity 11 and a second storage cavity 12 arranged sequentially in a vertical direction, with the first storage cavity 11 located above the second storage cavity 12. The roasting component 2 is located inside the first storage cavity 11 and includes a sieve assembly 21, a sun-drying assembly 22, and a heating assembly 23. The sun-drying assembly 22 includes multiple sun-drying trays 221 arranged at intervals in a vertical direction, and the sun-drying trays 221 are provided on the sieve assembly 21. The heating assembly 23 is located on the inner side wall of the cabinet 1 and is located in the area where the first storage cavity 11 is located. The wind circulation component 3 is located above the first storage cavity 11 and is used for blowing air. The drive component 4 is located inside the second storage cavity 12 and is connected to the sieve assembly 21 for driving the sieve assembly 21 to rotate.

[0020] In this embodiment, the cabinet 1 serves as the main support structure of the baking machine. It is typically a vertical box-shaped structure welded from stainless steel plates to ensure structural strength and corrosion resistance. Internally, it is physically divided into a first storage cavity 11 and a second storage cavity 12 distributed vertically. The first storage cavity 11, located at the top, primarily accommodates the baking components 2, forming the baking work area. The second storage cavity 12, located at the bottom, accommodates the drive components 4, achieving physical isolation between the power system and the thermal area, facilitating heat dissipation and maintenance.

[0021] The baking assembly 2 is located within the first storage cavity 11, serving to hold materials and provide a heat source. The sun-drying assembly 22 consists of multiple sun-drying trays 221 spaced vertically. These trays are typically stainless steel discs with perforated mesh, used to hold tea leaves. Their spacing allows for airflow channels, maximizing space utilization. The sieve frame 21 serves as the support and drive frame for the sun-drying trays 221. Made of stainless steel, it provides sufficient rigidity to support multiple layers. The sun-drying trays 221 are detachably mounted on the sieve frame 21, allowing all trays to rotate synchronously when the sieve frame 21 rotates. The heating assembly 23 is fixedly installed on the inner wall of the first storage cavity 11 area of ​​the cabinet 1, radiating heat into the baking cavity. Preferably, the heating assembly 23 uses planar heating elements to provide uniform planar heat radiation.

[0022] The air circulation component 3 is installed in the upper area of ​​the first storage cavity 11, which can blow airflow into the roasting cavity to establish and maintain airflow in the cavity, promoting heat transfer and moisture removal. The drive component 4 is located in the independent second storage cavity 12 and is connected to the sieve frame assembly 21 above it through a transmission mechanism. It is used to provide rotational power to drive the sieve frame assembly 21 and the sun-drying trays 221 on it to rotate at a uniform speed, so that each layer of tea leaves is dynamically and evenly exposed to the heat field during the roasting process.

[0023] In this embodiment, when the rock tea roasting machine is running, the drive component 4 starts, driving the sieve frame group 21 and the drying tray 221 to rotate at a uniform speed. Simultaneously, the heating group 23 generates heat, and the air circulation component 3 blows air into the roasting chamber from top to bottom. The rotating drying tray 221 continuously turns the tea leaves, and the combination of the downward airflow and radiant heat achieves dynamic and uniform heat exchange for the tea leaves. This embodiment transforms static roasting into dynamic heating, overcoming the problem of uneven heat distribution caused by insufficient natural convection of hot air or fixed heating element positions in traditional equipment. The drive component 4 achieves dynamic rotation of the material, which, combined with the forced convection provided by the air circulation component 3 and the radiant heat field generated by the wall heating group 23, works synergistically to create a highly uniform and controllable roasting environment. This significantly improves the heating uniformity and process controllability of rock tea roasting, which is beneficial for stabilizing tea quality in large-scale production.

[0024] In some embodiments, the screen frame assembly 21 includes a first support rod 211, a second support rod 212, a third support rod 213, a first connecting shaft 214, and a second connecting shaft. The first support rod 211 has a U-shaped structure; the second support rod 212 is set at an angle to the projection of the first support rod 211 in the vertical direction, and the second support rod 212 also has a U-shaped structure; the third support rod 213 is set at another angle to the projection of the second support rod 212 in the vertical direction, and the third support rod 213 also has a U-shaped structure; the ends of the first support rod 211, the second support rod 212, and the third support rod 213 on one side intersect at a point, denoted as the first connection point, and the ends of the first support rod 211, the second support rod 212, and the third support rod 213 on the other side intersect at another point, denoted as the second connection point; the first connecting shaft 214 is located at the first connection point; and the second connecting shaft is located at the second connection point.

[0025] In this embodiment, the first support rod 211, the second support rod 212, and the third support rod 213 are all U-shaped and can be made of stainless steel tubing, formed by bending to provide the necessary structural strength and lightweight characteristics. The first support rod 211, the second support rod 212, and the third support rod 213 are arranged in a staggered manner in space, with their vertical projections forming a certain angle with each other, together constructing a three-dimensional support frame. The two ends of the first support rod 211, the second support rod 212, and the third support rod 213 converge at a first connection point and a second connection point, respectively. A first connecting shaft 214 is provided at the first connection point, and a second connecting shaft is provided at the second connection point. Preferably, the first connecting shaft 214 and the second connecting shaft are solid steel shafts, and their ends may be machined with keyways or threads for reliable connection and power transmission with the coupling 45 or bearing housing of the drive unit 41; furthermore, the first support rod 211, the second support rod 212, and the third support rod 213 can be fixed together at the connection point by welding, and welded to the first connecting shaft 214 and the second connecting shaft or connected by flange, thereby forming a rigid integral rotating frame.

[0026] The sieve assembly 21 structure defined in this embodiment forms a rigid three-dimensional rotating frame through the spatially interlaced first support rod 211, second support rod 212, and third support rod 213, and the first connecting shaft 214 and second connecting shaft at both ends. When the drive assembly 4 drives the connecting shafts to rotate, the entire frame drives the drying trays 221 on it to rotate smoothly. The spatially interlaced structure, while ensuring overall rigidity, creates a large number of open areas, greatly reducing the obstruction to hot air circulation, allowing the airflow from top to bottom to penetrate each layer of drying trays 221 more smoothly and make full contact with the rotating tea leaves. This embodiment not only ensures the stability of load-bearing and rotation, but also effectively optimizes the flow field distribution within the roasting cavity, thus providing reliable support for achieving uniform and efficient dynamic roasting at the mechanical level.

[0027] In some embodiments, the heating assembly 23 includes a first graphene plate 231, a second graphene plate 232, and a third graphene plate 233. The first graphene plate 231 is disposed on the left side of the first storage cavity 11; the second graphene plate 232 is disposed on the right side of the first storage cavity 11; and the third graphene plate 233 is disposed on the rear side of the first storage cavity 11.

[0028] In this embodiment, the graphene plate is a planar electrothermal device with a graphene heating film as its core component. Its heating element is typically encapsulated between an insulating substrate (such as a mica board) and a metal protective shell. The first graphene plate 231, the second graphene plate 232, and the third graphene plate 233 are respectively attached to or embedded in the inner surfaces of the left, right, and rear side walls of the first storage cavity 11. Preferably, the shapes of the first graphene plate 231, the second graphene plate 232, and the third graphene plate 233 can be adapted to the shape of the inner wall of the cabinet 1, for example, by adopting a rectangular plate structure to maximize the heating area. The first graphene plate 231, the second graphene plate 232, and the third graphene plate 233 are connected to an external power supply and control unit 9 via wires, and can release heat to the central area of ​​the cavity in the form of infrared radiation after being powered on.

[0029] In this embodiment, graphene plates are arranged on the left, right, and rear side walls of the first storage cavity 11 to construct a three-sided surrounding radiant heating field. During operation, the first graphene plate 231, the second graphene plate 232, and the third graphene plate 233 work synchronously, radiating heat from multiple directions towards the center of the cavity and the rotating sieve assembly 21. This multi-directional and uniform planar radiant heating method effectively avoids local overheating and temperature gradients caused by single-point or unilateral heating, allowing heat to penetrate more evenly into each layer of rotating tea leaves. This significantly improves the uniformity and stability of the heat field within the entire roasting cavity, providing a crucial heat source guarantee for the uniform heating of the tea leaves.

[0030] In some embodiments, the cabinet 1 has a third storage cavity 13 at the top. The cabinet 1 also includes a first horizontal partition 14, a second horizontal partition 15, a first vertical partition 16, and a second vertical partition. The first horizontal partition 14 is disposed above the first storage cavity 11 to separate the third storage cavity 13. The second horizontal partition 15 is disposed below the first storage cavity 11 to separate the second storage cavity 12, which is not connected to the first storage cavity 11. The first vertical partition 16 is disposed on the left side of the first storage cavity 11. The first vertical partition 16 is connected to the left side of the first horizontal partition 14 to form a first air guide cavity 17. The first vertical partition 16 is provided with a plurality of first air guide channels 161 to guide the air in the third storage cavity 13 into the first storage cavity 11. The second vertical partition is located on the right side of the first storage cavity 11 and is connected to the right side of the first horizontal partition 14 to form a second air guide cavity. The second vertical partition is provided with a plurality of second air guide channels to guide the air in the third storage cavity 13 into the first storage cavity 11.

[0031] In this embodiment, the third storage cavity 13 is formed by a first horizontal partition 14 disposed above the first storage cavity 11. The first horizontal partition 14 and the second horizontal partition 15 are metal plates, preferably stainless steel plates of the same material as the cabinet body 1, and are fixed to the frame of the cabinet body 1 by welding or bolting. The second horizontal partition 15 is disposed below the first storage cavity 11, which completely physically isolates the first storage cavity 11 from the second storage cavity 12, ensuring that the two cavities are not connected to each other, which is beneficial for independent heat dissipation and maintenance of the drive assembly 4.

[0032] The first vertical partition 16 is vertically disposed on the left side of the first storage cavity 11, and its top end is connected to the left side of the first horizontal partition 14, thereby forming a first air guide cavity 17 together with the left side wall of the cabinet 1; the second vertical partition is disposed on the right side in the same manner to form a second air guide cavity. Preferably, the first vertical partition 16 and the second vertical partition and the graphene heating plate on the corresponding side adopt an integral molding structure, that is, as the mounting base and air guide structure of the graphene plate. The first vertical partition 16 is provided with a plurality of first air guide channels 161, and the second vertical partition is provided with a plurality of second air guide channels. These air guide channels can be circular holes, strip slits or louvered openings, used to guide the airflow in the third storage cavity 13 into the first storage cavity 11 evenly.

[0033] In this embodiment, a clear airflow path and functional zoning are constructed within the cabinet 1 through the combination of the first horizontal partition 14, the second horizontal partition 15, the first vertical partition 16, and the second vertical partition. The second horizontal partition 15 achieves independent sealing of the drive chamber (i.e., the second storage chamber 12), while the first horizontal partition 14 forms the upper air chamber (i.e., the third storage chamber 13). When the air circulation assembly 3 delivers air to the third storage chamber 13, the airflow is constrained by the first vertical partition 16 and the second vertical partition, and enters the first air guide chamber 17 and the second air guide chamber respectively. Then, through the air guide channels above them, the airflow is introduced into the baking work area (first storage chamber 11) from the left and right sides in a multi-stream, dispersed manner. This embodiment effectively distributes and transforms the concentrated airflow from the top into a laminar or slow flow that is evenly delivered from the side wall. This avoids excessively high local wind speeds or airflow short-circuiting caused by direct blowing from a single point. Together with the airflow from top to bottom, it forms a more uniform, gentle, and comprehensive three-dimensional air field in the roasting cavity, which significantly optimizes the contact efficiency between hot air and rotating tea leaves and improves the uniformity of roasting.

[0034] In some embodiments, the air circulation assembly 3 includes a fan 31 and a plurality of small fans 32. The fan 31 is disposed above the cabinet 1, and the air outlet of the fan 31 is connected to the third storage cavity 13. The plurality of small fans 32 are disposed on the top of the first storage cavity 11 and on the lower surface of the first horizontal partition 14. The plurality of small fans 32 are distributed circumferentially along the first horizontal partition 14, and the air outlets of the small fans 32 are disposed facing the screen frame assembly 21.

[0035] In this embodiment, the fan 31 is typically a centrifugal fan 31, whose outlet is connected to the third storage cavity 13 at the top of the cabinet 1 via an air duct or directly to provide the main airflow to this cavity. Multiple small fans 32 are axial fans, fixed to the lower surface of the first horizontal partition 14 by mounting brackets and evenly distributed along the circumference of the first horizontal partition 14. Preferably, the mounting angle of the small fans 32 is adjustable, allowing their airflow direction to be towards or at a certain angle to the central axis of the screen frame assembly 21. The power cord of the small fans 32 is connected to the control unit 9, and their speed can be independently adjusted.

[0036] In this embodiment, the air circulation component 3 employs a two-stage air supply mode consisting of a blower 31 and multiple small fans 32. The blower 31 acts as the main air source, pumping airflow into the third storage chamber 13, while the small fans 32 distributed at the top of the baking chamber serve as airflow guiding and enhancement units. During operation, the small fans 32 activate, actively drawing in and accelerating the pre-distributed airflow from the third storage chamber 13, and blowing it at a specific angle towards the rotating sieve frame 21. This embodiment transforms the diffuse airflow from the top static pressure air chamber into multiple active, directionally controllable jets, effectively guiding and enhancing the flow of hot air in the upper part of the baking chamber. This promotes the airflow to penetrate multiple layers of material from top to bottom and mixes with the airflow introduced from the side walls, forming a more uniform, forced convection-effect-more significant three-dimensional circulating air field, thereby significantly improving heat exchange efficiency and temperature field uniformity.

[0037] In some embodiments, the left side of the second horizontal partition 15 is provided with a first air outlet 151 and a second air outlet 152, which are arranged in the front-to-back direction; the right side of the second horizontal partition 15 is provided with a third air outlet and a fourth air outlet, which are arranged in the front-to-back direction; a first exhaust port 18 is provided on the rear side of the cabinet 1 near the second air outlet 152, and a second exhaust port is provided on the rear side of the cabinet 1 near the fourth air outlet; the air circulation assembly 3 also includes a first air outlet channel 33, a second air outlet channel, a first exhaust fan and a second exhaust fan, the first air outlet channel 33 including a first branch pipe 331 and a second branch pipe 332, etc. The system includes a first main air outlet 333, a first branch pipe 331 connected to the first air outlet 151, a second branch pipe 332 connected to the second air outlet 152, a first main air outlet 333 connected to the first branch pipe 331 and the second branch pipe 332 respectively, and a first exhaust port 18 connected to the first exhaust port; the second air outlet channel includes a third branch pipe, a fourth branch pipe and a second main air outlet, a third branch pipe connected to the third air outlet, a fourth branch pipe connected to the fourth air outlet, a second main air outlet connected to the third branch pipe and the fourth branch pipe respectively, and a second exhaust port connected to the second exhaust port; a first exhaust fan is installed at the first exhaust port 18; a second exhaust fan is installed at the second exhaust port.

[0038] In this embodiment, the first air outlet 151, the second air outlet 152, the third air outlet, and the fourth air outlet are through holes formed on the second transverse partition 15, and their shapes can be circular or rectangular. The first exhaust port 18 and the second exhaust port are openings formed on the rear side panel of the cabinet 1. The first air outlet channel 33 and the second air outlet channel are composed of metal or high-temperature resistant plastic ducts. The first branch pipe 331, the second branch pipe 332, the third branch pipe, the fourth branch pipe, the first exhaust main pipe 333, and the second exhaust main pipe are connected by pipe joints or welding to form a sealed air duct network. The first exhaust fan and the second exhaust fan are usually axial flow fans, which are fixed to the first exhaust port 18 and the second exhaust port by a mounting frame. Their power cords are connected to the control unit 9, and their speed is adjustable.

[0039] This embodiment constructs a forced exhaust system with multi-point collection and zoned exhaust. During the baking process, the airflow after heat and moisture exchange gathers at the bottom of the baking chamber and is drawn into the corresponding exhaust channels through the air outlets on the left and right sides of the second horizontal partition 15. The first exhaust channel 33 gathers the airflow on the left side and discharges it through the first exhaust port 18, while the second exhaust channel gathers the airflow on the right side and discharges it through the second exhaust port. The first and second exhaust fans actively draw in the airflow, ensuring smooth exhaust. By setting up symmetrical independent exhaust paths on the left and right sides, this embodiment achieves balanced and rapid extraction of airflow from the bottom of the baking chamber, effectively preventing the retention and secondary circulation of humid and hot exhaust gas at the bottom, maintaining a dry and stable process environment inside the baking chamber, and promoting smooth airflow circulation from top to bottom, further ensuring the uniformity and controllability of the temperature and humidity fields.

[0040] In some embodiments, the drive assembly 4 includes a drive unit 41, a drive wheel 42, a driven wheel 43, a belt 44, and a coupling 45. The drive unit 41 is disposed in the second storage cavity 12; the drive wheel 42 is sleeved on the output end of the drive unit 41; the driven wheel 43 is disposed on the input end of the screen frame assembly 21; the belt 44 is sleeved on the drive wheel 42 and the driven wheel 43; and the coupling 45 is disposed between the driven wheel 43 and the input end of the screen frame assembly 21.

[0041] In this embodiment, the drive unit 41 is preferably a geared motor, which is fixed to the bottom of the second storage cavity 12 by a mounting bracket. The drive wheel 42 is a pulley, which is fixed to the output shaft of the geared motor by a key connection or set screws; the driven wheel 43 is also a pulley, which is supported by bearings on a shaft fixed to the second partition plate 15 or the frame of the cabinet 1. The belt 44 is a synchronous belt or a V-belt, which is sleeved on the drive wheel 42 and the driven wheel 43 to transmit power. The coupling 45 is preferably a flexible coupling 45, whose two ends are respectively connected to the output shaft of the driven wheel 43 and the input end of the screen frame assembly 21 (i.e., the first connecting shaft 214 or the second connecting shaft), which is used to compensate for installation alignment errors and transmit torque.

[0042] This embodiment uses a geared motor as the power source. Its output torque is reduced and transmitted through a belt drive system consisting of a driving pulley 42, a belt 44, and a driven pulley 43. A coupling 45 connects the driven pulley 43 to the sieve frame assembly 21, smoothly guiding the rotational motion into the roasting chamber. Belt drives have the advantages of buffering vibration and overload protection, while the flexible coupling 45 can effectively absorb minor coaxiality deviations, ensuring that the sieve frame assembly 21 rotates smoothly and without jamming. This embodiment, through a mature mechanical transmission combination, achieves efficient, stable, and low-noise transmission of power from the lower drive unit 41 to the upper rotating load, providing a continuous and reliable mechanical drive for the uniform and dynamic roasting of tea leaves, and ensuring the stable operation of the roasting process.

[0043] In some embodiments, the rock tea roasting machine based on graphene electric heating and intelligent aroma enhancement also includes an upper cabinet door 5, a first sealing strip, a lower cabinet door 6, a second sealing strip, and multiple casters 7. The upper cabinet door 5 is disposed on the cabinet body 1 and is located in the area where the first storage cavity 11 is located. The upper cabinet door 5 is provided with a viewing window. The first sealing strip is disposed around the circumference of the upper cabinet door 5. The lower cabinet door 6 is disposed on the cabinet body 1 and is located in the area where the second storage cavity 12 is located. The second sealing strip is disposed around the circumference of the lower cabinet door 6. Multiple casters 7 are disposed on the lower surface of the cabinet body 1 and are disposed around the circumference of the cabinet body 1.

[0044] In this embodiment, the upper cabinet door 5 and the lower cabinet door 6 are typically made of the same stainless steel plate as the cabinet body 1 and are connected to the cabinet body 1 via hinges. The viewing window on the upper cabinet door 5 is a double-layered high-temperature resistant glass observation window, embedded in the door panel and sealed and fixed. The first and second sealing strips are strip-shaped sealing elements made of silicone rubber or fluororubber, and are fixed to the circumferential sealing groove on the inner edge of the cabinet door by adhesive or slotting. Multiple casters 7 are industrial swivel casters 7, preferably with a brake locking function, and are fixed to the four corners of the bottom of the cabinet body 1 by bolts or welding.

[0045] This embodiment achieves independent sealing and convenient access to the first storage cavity 11 and the second storage cavity 12 by setting up upper cabinet doors 5 and lower cabinet doors 6. The viewing window facilitates observation of the baking process, while the sealing strip ensures the airtightness of the chambers, reducing heat loss and external interference. Casters 7 provide the entire equipment with mobility, facilitating adjustments to the workstation within the production workshop. These auxiliary structures collectively enhance the equipment's operability, insulation performance, and deployment flexibility, enabling the baking process to be carried out in a stable and controllable environment, while simplifying equipment maintenance and handling procedures.

[0046] In some embodiments, the rock tea roasting machine based on graphene electric heating and intelligent aroma enhancement also includes a temperature sensor 8 and a control unit 9. The temperature sensor 8 is disposed in the first storage cavity 11; the control unit 9 is electrically connected to the temperature sensor 8 and the heating group 23 respectively.

[0047] In this embodiment, the temperature sensor 8 is preferably a PT100 platinum resistance temperature probe, the probe portion of which is fixed to a bracket inside the first storage cavity 11 by threads or clips, for directly detecting the air temperature of the baking area. The control unit 9 can be a PLC (Programmable Logic Controller) or an embedded microcontroller, installed in a control box outside or inside the cabinet 1. The control unit 9 is connected to the temperature sensor 8 via a signal line to receive temperature data, and is connected to the heating group 23 (such as the first graphene plate 231, the second graphene plate 232, and the third graphene plate 233) via a power line to control its on / off state or adjust the heating power.

[0048] In this embodiment, temperature sensor 8 monitors the temperature inside the roasting chamber in real time and feeds the signal back to control unit 9. Control unit 9 compares the detected temperature with a preset process curve and outputs a control signal to heating group 23 to dynamically adjust its heat output. This embodiment constitutes a closed-loop temperature control system that can automatically maintain the roasting temperature within the set range, effectively overcoming the lag and instability of manual temperature control, significantly improving the accuracy and repeatability of the roasting process, and providing a key guarantee for obtaining stable quality Wuyi rock tea products.

[0049] In some embodiments, the rock tea roasting machine based on graphene electric heating and intelligent aroma enhancement also includes a heat insulation layer disposed on the inner sidewall of the first storage cavity 11.

[0050] In this embodiment, the heat insulation layer is a thermal insulation material layer applied to the surfaces of all inner walls (including the top wall, side walls, and bottom wall) of the first storage cavity 11. Preferably, the heat insulation layer is made of aluminum silicate ceramic fiber felt or high-temperature rock wool board, which is bonded to the inner wall of the cabinet 1 by high-temperature resistant adhesive or fixed to the inner wall by mechanical pressure plate.

[0051] This embodiment effectively reduces heat loss through the cabinet 1 wall to the outside during the roasting process by setting a heat insulation layer on the inner wall of the first storage cavity 11. This helps to concentrate heat energy for tea roasting, significantly improving heat utilization efficiency and reducing equipment operating energy consumption. At the same time, the good heat preservation performance makes it easier to maintain a stable temperature inside the roasting cavity, reducing the interference of external environmental temperature fluctuations on the process, thereby further ensuring the uniformity and controllability of the roasting temperature.

[0052] By adopting the above technical solutions, this invention differs from existing technologies and has the following beneficial effects: The drive assembly 4 drives the sieve frame 21 and the multi-layer drying trays 221 to rotate at a uniform speed, causing the tea leaves to dynamically turn during the roasting process. Simultaneously, the heating assembly 23 (such as the first graphene plate 231, the second graphene plate 232, and the third graphene plate 233) provides uniform planar radiant heat from the side and rear walls of the first storage cavity 11, while the air circulation assembly 3 introduces airflow from above and the sides, forming a three-dimensional circulating airflow field that flows from top to bottom and surrounds the material. The rotating tea leaves, the multi-directional uniform radiant heat field, and the forced convection airflow field work together to achieve dynamic and uniform heat exchange. The above-mentioned technical solution transforms static baking into dynamic heating, effectively overcoming the shortcomings of uneven heat field distribution and single heating method in traditional equipment. Through the deep integration of mechanical rotation, surface radiation heating and controllable airflow circulation, a highly uniform and controllable baking environment is constructed, which significantly improves the uniformity of heating, process controllability and heat energy utilization efficiency of rock tea baking, and provides a reliable equipment foundation for the stable reproduction of the uniform fire effect of traditional charcoal roasting in large-scale production.

[0053] The above description is only a part of the embodiments of the present invention and does not limit the scope of protection of the present invention. Any equivalent device or equivalent process transformation made based on the content of the present invention specification and drawings, or direct or indirect application in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A rock tea roasting machine based on graphene electric heating and intelligent aroma enhancement, characterized in that, include: The cabinet has a first storage cavity and a second storage cavity arranged sequentially along the vertical direction, with the first storage cavity located above the second storage cavity; A baking assembly is disposed in the first storage cavity. The baking assembly includes a sieve assembly, a sun-drying assembly, and a heating assembly. The sun-drying assembly includes a plurality of sun-drying trays spaced apart in a vertical direction. The sun-drying trays are disposed on the sieve assembly. The heating assembly is disposed on the inner side wall of the cabinet and is located in the area where the first storage cavity is located. A wind circulation component is disposed above the first storage cavity, and the wind circulation component is used for blowing air; A drive assembly is disposed in the second storage cavity. The drive assembly is connected to the screen frame assembly for driving the screen frame assembly to rotate.

2. The rock tea roasting machine based on graphene electric heating and intelligent aroma enhancement according to claim 1, characterized in that, The screen frame assembly includes: The first support rod has a U-shaped structure; The second support rod is set at an angle to the projection of the first support rod in the vertical direction, and the second support rod has a U-shaped structure; The third support rod is set at another angle to the projection of the second support rod in the vertical direction, and the third support rod has a U-shaped structure; The ends of the first, second, and third support rods on one side intersect at a point, which is denoted as the first connection point. The ends of the first, second, and third support rods on the other side intersect at another point, which is denoted as the second connection point. A first connecting shaft is disposed at the first connecting point; The second connecting shaft is located at the second connecting point.

3. The rock tea roasting machine based on graphene electric heating and intelligent aroma enhancement according to claim 1 or 2, characterized in that, The heating assembly includes: The first graphene plate is disposed on the left side of the first storage cavity; The second graphene plate is disposed on the right side of the first storage cavity; The third graphene plate is disposed on the rear side of the first storage cavity.

4. The rock tea roasting machine based on graphene electric heating and intelligent aroma enhancement according to claim 1, characterized in that, The cabinet has a third storage compartment at the top, and the cabinet also includes: A first transverse partition is disposed above the first storage cavity to separate the third storage cavity; A second partition is provided at the lower part of the first storage cavity to separate the second storage cavity, which is not connected to the first storage cavity; A first vertical partition is disposed on the left side of the first storage cavity, and the first vertical partition is connected to the left side of the first horizontal partition to form a first air guide cavity. The first vertical partition is provided with a plurality of first air guide channels to guide the air in the third storage cavity into the first storage cavity. The second vertical partition is located on the right side of the first storage cavity, and the second vertical partition is connected to the right side of the first horizontal partition to form a second air guide cavity. The second vertical partition is provided with a plurality of second air guide channels to guide the air in the third storage cavity into the first storage cavity.

5. The rock tea roasting machine based on graphene electric heating and intelligent aroma enhancement according to claim 4, characterized in that, The air circulation component includes: A fan is installed above the cabinet, and the air outlet of the fan is connected to the third storage cavity; Multiple small fans are disposed at the top of the first storage cavity and on the lower surface of the first horizontal partition. The multiple small fans are distributed circumferentially along the first horizontal partition, and the air outlets of the small fans are directed toward the screen frame assembly.

6. The rock tea roasting machine based on graphene electric heating and intelligent aroma enhancement according to claim 5, characterized in that, The second diaphragm has a first air outlet and a second air outlet on its left side, and the first air outlet and the second air outlet are arranged in the front-to-back direction; The right side of the second diaphragm is provided with a third air outlet and a fourth air outlet, which are arranged along the front-to-back direction; The cabinet has a first exhaust port near the second air outlet on the rear side, and a second exhaust port near the fourth air outlet on the rear side of the cabinet. The air circulation component also includes: The first air outlet duct includes a first branch pipe, a second branch pipe, and a first main air outlet. The first branch pipe is connected to the first air outlet, the second branch pipe is connected to the second air outlet, the first main air outlet is connected to the first branch pipe and the second branch pipe respectively, and the first main air outlet is connected to the first exhaust port. The second air outlet duct includes a third branch pipe, a fourth branch pipe, and a second main air outlet pipe. The third branch pipe is connected to the third air outlet, the fourth branch pipe is connected to the fourth air outlet, the second main air outlet pipe is connected to the third branch pipe and the fourth branch pipe respectively, and the second main air outlet pipe is connected to the second exhaust port. A first exhaust fan is installed at the first exhaust port; The second exhaust fan is located at the second exhaust port.

7. The rock tea roasting machine based on graphene electric heating and intelligent aroma enhancement according to claim 1, characterized in that, The driving component includes: The drive unit is disposed within the second storage cavity; The drive wheel is fitted onto the output end of the drive unit; The driven wheel is located at the input end of the screen frame assembly; A belt is fitted onto the driving pulley and the driven pulley; A coupling is provided between the driven wheel and the input end of the screen frame assembly.

8. The rock tea roasting machine based on graphene electric heating and intelligent aroma enhancement according to claim 1, characterized in that, Also includes: An upper cabinet door is provided on the cabinet body and is located in the area where the first storage cavity is located; the upper cabinet door is provided with a viewing window. The first sealing strip is provided along the circumference of the upper cabinet door; The lower cabinet door is located on the cabinet body and in the area where the second storage cavity is located; The second sealing strip is provided along the circumference of the lower cabinet door; Multiple casters are provided on the lower surface of the cabinet and are arranged around the circumference of the cabinet.

9. The rock tea roasting machine based on graphene electric heating and intelligent aroma enhancement according to claim 1, characterized in that, Also includes: A temperature sensor is installed inside the first storage cavity; The control unit is electrically connected to the temperature sensor and the heating group, respectively.

10. The rock tea roasting machine based on graphene electric heating and intelligent aroma enhancement according to claim 1, characterized in that, Also includes: A heat insulation layer is disposed on the inner side wall of the first storage cavity.

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