Thermal energy conduction device for drum-type roasting machine

Abstract

To provide a thermal energy conduction device for a drum-type roasting machine.SOLUTION: A thermal energy conduction device for a drum-type roasting machine A uses a plurality of conduction fins to let heat airflow enter a roasting space to form a plurality of ducts of airflow heat because the heat airflow passes through an entrance of a plurality of heat airflows out to the heat airflow outlet when heated by a heating device. Also, between an inner drum and an outer drum, physical heat conduction occurs by metal heat conduction of the plurality of conduction fins. Thus, when airflow heat temperature is higher than a physical heat conduction amount, temperature of the airflow heat compensates the physical heat conduction amount. Conversely, when the airflow heat temperature is lower than physical heat conduction, physical heat conduction temperature compensates airflow heat. Therefore, physical heat conduction and the airflow heat temperature compensate each other, and constant temperature, power saving, and uniformity can be realized. In summary, by warmth and heat insulation, excellent heat stability and roasting quality are achieved while the roasting machine is roasting.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a drum-type roaster, and more particularly to an improvement in a drum-type roaster having a Samar energy transfer device. [Background technology]

[0002] Before coffee beans are ground into an edible powder, they are usually roasted. During the roasting process, the green beans need sufficient heat to expand, darken, release their characteristic odor, and accelerate flavor-enhancing and other chemical reactions. Figure 1-1 shows the structure of a conventional roaster, a "semi-hot air type." It mainly includes the furnace body C1. At one end of the furnace body C1, a heat output C2 is provided, and inside is a rotating drum C3. The rotating drum C3 is rotated by a shaft C4. Coffee beans C5 are placed inside the drum C3. A heat source C9 is installed directly at the bottom of the drum C3. Figure 1-2 shows the structure of a conventional roaster with a "full hot air tie." It mainly comprises a furnace body C1. A heat output C2 is provided at one end of the furnace body C1, and a rotating drum C3 is installed inside. The rotating drum C3 is rotated by a shaft C4. Coffee beans C5 are placed inside the drum C3. An inner partition C61 and an outer partition C62 are installed at the bottom of the drum C3. A duct C7 is formed between the furnace body C1 and the inner and outer partitions C61 and C62. A heat input C8 is installed at the bottom of the duct C7, and a heat source C9 is installed on one side of C61. Summary of the Invention [Problem to be solved by the invention]

[0003] The advantage of the "semi-hot air type" structure is that it heats up quickly. However, because the heat source C9 is directly connected to the drum C3, the temperature of the hot air is uneven, making it impossible to roast the aroma and flavor of the coffee beans.The temperature of the drum is too high, which not only overheats the surface of the coffee beans but also produces a burnt smell. The "full hot air tie" structure has a relatively stable hot air temperature compared to the "semi-hot air type" structure. However, due to the layered barriers of the inner partition C61 and outer partition C62, heating is often insufficient or the heating speed is slow. Furthermore, the inner partition C61 and outer partition C62 are fixed structures, and the heat source C9 is introduced to the drum C3 only through the duct C7, meaning that the heat source C9 cannot indirectly transfer heat via the pot body. As a result, heat is consumed intensively at the inner partition C61 and outer partition C62, resulting in wasted energy.

[0004] The main purpose of this invention is to provide a samar energy transfer device for a drum-type roaster, which aims to improve the drawbacks of the conventional structure, such as the inner and outer partitions being fixed and unable to rotate, which prevents the hot air from flowing inside the drum for a long time, resulting in the inability to achieve constant temperature, energy saving, uniform temperature and heat retention effects. [Means for solving the problem]

[0005] To solve the above problems and achieve the above objectives, the present invention provides a roasting device comprising an inner drum, a uniform-temperature heat conduction unit, an outer drum, and a stirring unit. A roasting space is formed inside the inner drum. The heat conduction unit is composed of a plurality of conduction fins arranged in a radial ring. The plurality of conduction fins are uniformly arranged on the outer periphery of the inner drum and the inner periphery of the outer drum. The conduction fins are made of a metallic heat-conducting material. An open storage space is formed at one end of the outer drum, and a closed end is formed at the other end. A shaft hole is provided at the center of the closed end. The inner annular peripheral wall of the open storage space is connected to the outer periphery of the uniform-temperature heat conduction unit in a covering manner. The length of the front end of the outer drum is slightly shorter than the length of the front edge of the inner drum, forming a protrusion at the front edge of the inner drum. A circulation space is formed at the other closed end of the outer drum, corresponding to the inner drum and the uniform-temperature heat conduction unit. Thus, the uniform-temperature heat conduction unit's multiple conduction fins face the inner and outer drums, corresponding to one end of the protruding sections, forming multiple annular hot air inlets. Meanwhile, the multiple conduction fins face the inner and outer drums, forming multiple annular hot air outlets at the other end opposite the hot air inlets. The agitator unit also includes a drive shaft. One end of the drive shaft is equipped with a drive end, and the other end is equipped with a shaft end. The drive end is attached to the shaft hole in the outer drum. The drive shaft also includes multiple radial fixing units around its periphery. The ends of the radial fixing units are fixed to the inner wall of the inner drum. Agitator plates are provided between each of the radial fixing units.

[0006] In the drum-type roaster of the present invention, when heated by the heating device, the hot airflow passes through multiple hot airflow inlets and then to the hot airflow outlets. This involves the use of multiple conduction fins to direct the hot airflow into the roasting space, forming multiple airflow heat ducts. Furthermore, physical heat conduction occurs between the inner and outer drums through the metallic heat conduction of multiple conduction fins. Therefore, when the airflow heat temperature is greater than the physical heat conduction amount, the airflow heat temperature compensates for the physical heat conduction amount. Conversely, when the airflow heat temperature is less than the physical heat conduction amount, the physical heat conduction temperature compensates for the airflow heat. Therefore, physical heat conduction and airflow heat temperature mutually compensate, achieving constant temperature, energy savings, and uniformity. In short, by providing warmth and heat retention, the roaster achieves excellent thermal stability and roasting quality during roasting. [Effects of the Invention]

[0007] See Figure 5. Between the inner drum 10 and the outer drum 30, multiple hot air inlets B1 and multiple hot air outlets B2 are formed through multiple heat conduction fins 21. In this way, the hot air flow N from the heating device 4 is blocked by the protrusions B3. The hot air flow N enters through the hot air inlet B1 and passes through the hot air outlet B2. Airflow heat Z2 is generated between the inner drum 10 and the outer drum 30. Next, see Figure 6. Physical conduction heat Z1 is generated between the inner drum 10 and the outer drum 30 through the metallic heat-conducting material of the multiple heat conduction fins 21. Therefore, when the temperature of airflow heat Z2 is higher than that of physical conduction heat Z1, airflow heat Z2 compensates for the physical conduction heat Z1. Conversely, when the temperature of airflow heat Z2 is lower than that of physical conduction heat Z1, physical conduction heat Z1 compensates for the airflow heat Z2. In short, the temperature of the physical heat conduction heat Z1 and the temperature of the airflow heat Z2 have a mutually compensating effect.

[0008] See Figure 7. When heating device 4 is in operation, hot air flow N passes from multiple hot air inlets B1 to hot air outlet B2, allowing the hot air flow N to travel a longer path through the drum. This results in constant temperature, energy savings, uniform temperature, and heat retention, and ensures stable roasting energy during coffee roasting. [Brief explanation of the drawings]

[0009] [Figure 1-1] FIG. 1 is a cross-sectional view of the structure of a conventional hot air drum roaster. [Figure 1-2] FIG. 1 is a cross-sectional view of the structure of a conventional semi-hot air drum roaster. [Figure 2] FIG. 1 is a three-dimensional view of the Samar energy transmission device of the drum-type roaster of the present invention. [Figure 3] FIG. 2 is a structural three-dimensional diagram of the roasting drum of the present invention. [Figure 4] FIG. 1 is an exploded view of the roasting drum of the present invention. [Figure 5] FIG. 2 is a partial cross-sectional three-dimensional view of the roasting drum of the present invention. [Figure 6] FIG. 1 is a front view of the roasting drum of the present invention. [Figure 7] FIG. 1 is a cross-sectional view of the Samar energy transmission device of the drum-type roaster of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0010] Please refer to Figures 2 to 7. The Samar energy transmission device of the drum roaster of the present invention includes the following elements:

[0011] Roaster A mainly comprises an outer shell cover 1. A heating device 4 is installed at the inside bottom of outer shell cover 1. A material inlet 2 and a material outlet 3 are installed at predetermined positions at the front end of outer shell cover 1. A damper 5 is installed at one end of roaster A and is connected to an exhaust device (not shown), which generates negative pressure in outer shell cover 1 via damper 5. Furthermore, negative pressure is created inside using heating device 4, causing hot air current N to flow.

[0012] Roasting drum B is composed of an inner drum 10, a uniform temperature heat conduction unit 20, an outer drum 30, and a stirring unit 40. It is installed inside roasting machine A. Roasting drum B is installed inside outer shell cover 1 and can rotate pivotally back and forth. A heating device 4 is installed at a suitable position at the bottom of roasting drum B, and a material inlet 2 and a material outlet 3 are installed at suitable positions at the front end of roasting drum B.

[0013] A roasting space 11 is formed inside the inner drum 10. A mesh 12 is provided on the rear end surface of the inner drum 10. The mesh 12 has a plurality of mesh holes 14 and a shaft hole 13 in the center. The mesh 12 can be used to prevent coffee beans from falling out of the inner drum 10 during rotation.

[0014] The uniform-temperature heat conduction unit 20 has a plurality of heat conduction fins 21 arranged in a radial pattern. The plurality of heat conduction fins 21 are evenly distributed and connected to the outer periphery of the inner drum 10 and the outer periphery of the outer drum 30. The heat conduction fins 21 are made of a thermally conductive metal material. The upper and lower edges of the plurality of heat conduction fins 21 of the uniform-temperature heat conduction unit 20 are respectively bent to form connecting edges 22, which connect the inner periphery of the outer drum 30 and the outer periphery of the inner drum 10. The above connection method may be welding, or the uniform-temperature heat conduction unit 20 and the inner drum 10 may be integrally molded.

[0015] One end of the outer drum 30 forms an open storage space 33, and the other end forms a closed end 31. A shaft hole 32 is provided in the center of the closed end 31, allowing the inner peripheral wall of the open storage space 33 to be connected to the outer edge of the uniform-temperature heat conduction unit 20. This connection may be by welding, or the uniform-temperature heat conduction unit 20 and the outer drum 30 may be integrally molded. However, these methods are for illustrative purposes only and the present application is not limited to this structure. The length of the front end of the outer drum 30 is slightly shorter than the length of the front edge of the inner drum 10. Therefore, a protrusion B3 is formed at the front edge of the inner drum 10, and a circulation space B4 is formed at the closed end 31 of the outer drum 30 between the inner drum 10, the uniform-temperature heat conduction unit 20, and the uniform-temperature heat conduction fins 20. The heat conduction fins 21 of the uniform temperature heat conduction unit 20 are disposed between the inner drum 10 and the outer drum 30, and have a plurality of annularly distributed hot air inlets B1 at one end of the protruding portion B3. The heat conduction fins 21 also have a plurality of annularly distributed hot air outlets B2 at the other end opposite the hot air inlets B1 with respect to the inner drum 10 and the outer drum 30.

[0016] The drive shaft 41 is pivotally mounted through the shaft hole 13 of the inner drum 10 and the shaft hole 32 of the outer drum 30. Therefore, the inner drum 10 and the outer drum 30 can rotate synchronously using the drive shaft 41. The pivotal fixing method can be welding or screwing.

[0017] The stirring unit 40 has a driving rotation end 43 at one end relative to the drive shaft 41 and a shaft rotation end 42 at the other end. Therefore, the driving rotation end 43 is assembled to the shaft hole 32 of the outer drum 30. A plurality of radial fixing units 44 are provided on the periphery of the drive shaft 41. An end of each radial fixing unit 44 is fixed to the inner peripheral wall of the inner drum 10. A plurality of stirring plates 45 are provided between each of the plurality of radial fixing units 44. The stirring unit 40 can stir the coffee beans.

[0018] Ideally, the inner drum 10 and outer drum 30 are made of a metallic heat-conducting material.

[0019] Ideally, the plurality of heat conduction fins 21 of the uniform temperature heat conduction unit 20 are arranged in a circular configuration, such as upright type, inclined type, spiral type, or adopting any other shape.

[0020] Ideally, the inner peripheral wall surface of the inner drum 10 has a plurality of paddles 15 arranged in an annular configuration.

[0021] Ideally, an air inlet B6 is provided on the outer shell cover 1 at a position corresponding to the heating device 4. The air inlet B6 is used to supply the necessary oxygen to the heating device. A bearing B5 is provided on the rear end surface of the outer shell cover 1 at a position corresponding to the drive shaft 41. [Explanation of symbols]

[0022] (conventional structure) C1: Furnace body C2: Heat output C3: Drum C4: Shaft C5: Coffee beans C61: Internal septum plate C62: External partition C7: Duct C8: Heat Input C9: Heat Source (Structure of the present invention) A: Roasting machine B: Roasting drum B1: Hot air inlet B2: Hot air outlet B3: Protruding part B4: Circulation space B5: Bearing B6: Air inlet N: Heat flow Z1: Heat conduction in physics Z2: Heat of airflow 1: Outer shell cover 2: Material inlet 3: Material outlet 4: Heating equipment 5: Damper 10: Inner drum 11: Roasting space 12: Mesh 13: Shaft hole 14: Mesh Hole 15: Paddle 20: Uniform temperature heat conduction unit 21: Heat conduction fin 22: Connecting edge 30: Outer drum 31: Closed end 32: Shaft hole 33: Storage space 40: Mixing unit 41: Drive shaft 42: Shaft rotation end 43: Drive rotating end 44: Radial fixing unit 45: Stirring plate

Claims

1. A samar energy transfer device for a drum-type roaster, comprising an inner drum, a uniform-temperature heat transfer unit, an outer drum and a drive shaft, in which a roasting space is formed inside the inner drum, a mesh is provided on the rear surface of the inner drum, a plurality of mesh holes are arranged on the mesh and a shaft hole is provided in the center, the heat transfer unit is composed of a plurality of conduction fins arranged in a radial ring, the plurality of conduction fins are uniformly arranged on the outer periphery of the inner drum and the inner periphery of the outer drum, the conduction fins are made of a metallic heat transfer material, one end of the outer drum is formed as an open receiving space, the other end is formed as a closed end, a shaft hole is provided in the center of the closed end, the length of the front end of the outer drum is slightly shorter than that of the front edge of the inner drum, forming a protrusion at the front edge of the inner drum, and the other closed end of the outer drum is connected to the inner drum, the uniform-temperature heat transfer unit, The drum-type roaster has a samar energy conduction device, characterized in that a circulation space is formed corresponding to the knit, and therefore the multiple conduction fins of the uniform temperature heat conduction unit face the inner drum and the outer drum, corresponding to one end of the protruding step, to form multiple annular hot air inlet ports; on the other hand, the multiple conduction fins face the inner drum and the outer drum, to form multiple annular hot air outlet ports at the other end opposite to the hot air inlet ports; the drive shaft is pivoted through the axial holes of the inner drum and the outer drum, so that the inner drum and the outer drum rotate synchronously using the drive shaft.

2. The samar energy conduction device of the drum-type roaster of claim 1, characterized in that the upper and lower edges of the uniform-temperature heat conduction unit are respectively folded to form connecting edges, which connect the inner peripheral edge of the outer drum with the outer peripheral edge of the inner drum.

3. The roasting drum is pivotally mounted on the outer shell, a heating device is provided at the inner bottom of the outer shell, and a material inlet and a material outlet are provided at predetermined positions at the front end of the outer shell.

4. The roasting drum further includes a stirring unit, one end of which is provided with a driving rotation end and the other end with a shaft rotation end, the driving rotation end being fitted into the shaft hole of the outer drum, the periphery of the drive shaft is provided with a plurality of radial fixing units, the end of each radial fixing unit is fixed to the inner peripheral wall of the inner drum, and a plurality of stirring plates are provided between each of the radial fixing units.

5. The samar energy conduction device of claim 1, characterized in that the plurality of heat conduction fins of the uniform temperature heat conduction unit are arranged in a circular pattern using upright, inclined or spiral types.

6. The energy transfer device of a drum-type roaster according to claim 1, characterized in that the inner drum has a plurality of paddles arranged in a circular pattern on its inner peripheral wall.

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