A coffee bean roaster

Abstract

The present application relates to the technical field of coffee bean roasting, and particularly relates to a coffee bean roasting machine, which comprises a roasting assembly, the roasting assembly comprises a shell and a stirring mechanism arranged in the shell, and the stirring mechanism is rotationally connected with the shell; the shell is made of titanium alloy material, and the wall thickness of the shell is 1mm-5mm; the shell comprises a roasting part and an air inlet part, the roasting part is detachably connected with a valve, and the valve is away from the shell to form an opening of the roasting part; the air inlet part is connected with the roasting part, the air inlet part is a slope, and the air inlet part is provided with air permeation holes; the high-strength material and thin wall are adopted, the heat storage and heat inertia are reduced, and thus the energy loss is reduced; the air inlet part is arranged as a slope, the air inlet amount of the shell is increased, the heat exchange between hot air and coffee beans is improved, the roasting efficiency is improved, and the valve is tightly attached to the roasting part by the air cylinder to seal the roasting part and avoid coffee beans from leaking.

Description

Technical Field

[0001] This invention relates to the field of coffee bean roasting technology, and more particularly to a coffee bean roasting machine. Background Technology

[0002] A coffee bean roaster is a specialized device used to heat green coffee beans to an ideal roasting temperature, developing their flavor and aroma. Roasters mainly include direct-fire, semi-hot-air, and hot-air types, with hot-air roasters being the most common. Hot-air roasters have no open flame; they rely on high-temperature hot air to suspend and tumble the beans, resulting in extremely even heating, minimal internal and external temperature differences, cleanliness, and low off-flavors, highlighting fruity aromas and sweetness.

[0003] Currently, hot air baking machines have the following problems: (a) Conventional hot air roasters have a small air intake area, resulting in slow heat exchange between coffee beans and hot air and low roasting efficiency. (ii) Conventional hot air roasters have thicker drum walls. The drum has heat storage and thermal inertia. Before roasting coffee beans, the drum needs to be heated. After roasting, the drum needs to be cooled, resulting in energy loss, high energy consumption, and poor environmental performance.

[0004] (iii) There is a gap between the drum and the outlet of a conventional hot air roaster. When roasting coffee beans, thermal expansion will occur between the drum and the outlet, causing the gap to widen to 2mm~3mm. This will cause coffee beans with poor quality or smaller diameter to leak through the gap and not be roasted. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this invention is to provide a coffee bean roaster to solve one or more problems in the prior art.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: A coffee bean roaster, comprising: A baking assembly, comprising a housing and a stirring mechanism disposed within the housing, the stirring mechanism being rotatably connected to the housing; The shell is made of titanium alloy, and the shell wall thickness is 1mm~5mm; The housing includes a baking section and an air inlet section. The baking section is detachably connected to a valve, which is located away from the housing to create an opening in the baking section. The air inlet is connected to the baking section, the air inlet is inclined, and the air inlet has ventilation holes.

[0007] Through the above technical solution, the shell is made of high-strength material and has a thin wall. This reduced thickness improves heat transfer between the shell and the coffee beans, eliminating the need for pre-heating and cooling the shell, thus reducing energy loss and improving environmental friendliness. During roasting, the valve is tightly attached to the roasting section, minimizing the gap between the valve and the section. After roasting, the valve opens to allow the coffee beans to fall, preventing small-diameter beans from leaking through gaps before fully roasting, which would affect the flavor and taste of the coffee. The air inlet is designed with a slope and ventilation holes, increasing the cross-sectional area of ​​the ventilation holes and the hot air flow. This increased airflow leads to faster heat exchange with the coffee beans, improving roasting efficiency. The stirring mechanism rotates inside the shell, replacing the conventional shell rotation. This prevents the shell from rotating too much centrifugally when roasting large loads of coffee beans, thus avoiding low roasting efficiency caused by excessive centrifugal force.

[0008] Furthermore, the angle between the air inlet and the first direction is 45°~60°, the opening ratio of the vent is 30%~40%, and the diameter of the vent is 2.5mm~4mm; The air inlet is connected to the air inlet channel, the end face of which is tangent to the baking section, and the air inlet channel is used to connect to the hot air blower.

[0009] Through the above technical solution, the air inlet is designed with an inclined surface to increase the air volume. When coffee beans are roasted onto the air inlet, they can fall quickly, improving roasting efficiency. The air inlet channel is tangent to the roasting section, increasing the cross-sectional area of ​​the air inlet channel and the air volume per unit time. Combined with the increased cross-sectional area of ​​the air inlet, more hot air enters the shell, thereby accelerating heat exchange with the coffee beans and improving roasting efficiency.

[0010] Furthermore, it also includes: a box body, wherein the baking assembly is disposed inside the box body, and the inner wall of the box body is connected to a cylinder; The output shaft of the cylinder is connected to the valve, and the cylinder drives the valve to abut against or separate from the baking part.

[0011] Through the above technical solution, the cylinder drives the valve to fit tightly against the roasting section to prevent coffee beans from leaking out. After roasting is completed, the cylinder drives the valve to separate from the roasting section, causing the roasting section to open and the coffee beans to fall from the outlet to the next operation.

[0012] Furthermore, a motor is also installed inside the box, and the stirring mechanism includes a rotating shaft connected to the output shaft of the motor, a plurality of stirring rods equidistantly arranged on the rotating shaft, and blades connected to the stirring rods; The number of blades is 4 to 8, the baking part is arc-shaped, and there is a gap between the blades and the baking part, the gap being 0.1 mm to 0.2 mm.

[0013] Through the above technical solution, the motor drives the rotating shaft and stirring rod to rotate, which in turn drives the blades to rotate. The blades rotate inside the shell to push the coffee beans, replacing the traditional shell rotation, thereby achieving high-speed or low-speed stirring and avoiding the shell not being able to rotate or the rotation speed being slow when the load is large.

[0014] Furthermore, it also includes: a cooling assembly, which is disposed inside the housing, the cooling assembly including a cooling box, a cooling plate disposed inside the cooling box, and a first fan connected to the inner wall of the housing; The cooling box is connected to the baking section via a cooling channel. One end of the first fan is connected to the cooling channel via a pipe, and the other end of the first fan is connected to the outside of the box via a pipe. The air volume of the first fan is 800 m³ / h. 3 / h~1200m 3 / h.

[0015] With the above technical solution, after the coffee beans are roasted, they fall into the cooling box. The airflow of the first fan is adjusted to make the coffee beans suspend. The coffee beans jump on the cooling plate, thereby improving the cooling efficiency.

[0016] Furthermore, through holes are formed on the cooling plate, with an opening ratio of 30% to 40% and a diameter of 2mm to 4mm.

[0017] Through the above technical solution, the first fan sucks up the coffee beans onto the cooling plate, and then drops the coffee beans from the cooling plate through the through holes into the cooling box, thus accelerating the cooling of the coffee beans.

[0018] Furthermore, the housing is also equipped with a second fan, which is connected to the cooling box via a pipe.

[0019] Through the above technical solution, both the second fan and the first fan are connected to the cooling box, thereby enabling convection and accelerating the cooling of coffee beans.

[0020] Furthermore, the cooling box is provided with a discharge pipe that penetrates the side wall of the box body.

[0021] With the above technical solution, after the coffee beans are cooled in the cooling box, they flow out through the discharge pipe for collection, making them easy to remove.

[0022] Furthermore, a hopper is provided on the inner wall of the box, and the hopper is connected to the shell; the box is equipped with casters.

[0023] With the above technical solution, coffee beans enter the shell for roasting through the hopper, and the casters facilitate the movement of the container.

[0024] Furthermore, a cyclone dust collector is also provided on the inner wall of the housing, and the cyclone dust collector is connected to the housing through a pipe; The cyclone dust collector is equipped with a collection bucket and a third fan at each end. The third fan is connected to the outside of the housing via a pipe, and the air volume of the third fan is 400 m³ / s. 3 / h~900m 3 / h.

[0025] By adjusting the airflow of the third fan during the coffee bean roasting process, the third fan draws the silver sheet inside the casing into the cyclone dust collector, where it falls downwards into the collection bucket.

[0026] Compared with the prior art, the beneficial technical effects of the present invention are as follows: (i) This invention increases the air intake of the shell by setting an inclined air inlet, thereby improving the heat exchange between the hot air and the coffee beans and thus improving the roasting efficiency. By using high-strength materials and reducing the shell thickness, the shell is made strong while reducing heat storage and thermal inertia. There is no need to preheat the shell before roasting the coffee beans and no need to cool the shell after roasting, thus reducing energy loss.

[0027] (ii) The present invention uses a cylinder to pull the valve open. The cylinder drives the valve to fit tightly against the roasting part to seal it and prevent coffee beans from leaking out. After roasting is completed, the cylinder drives the valve to separate from the roasting part, so that the roasting part opens and the coffee beans fall from the outlet to the cooling component. This prevents the gap from widening due to the expansion of the shell due to heat, and prevents the coffee beans from falling into the cooling box before being roasted.

[0028] (iii) The present invention improves the cooling efficiency of coffee beans by setting up a cooling plate and a first fan to make coffee beans suspend and jump on the cooling plate; at the same time, the second fan forms convection with the first fan to accelerate the cooling effect.

[0029] (iv) This invention replaces the traditional shell rotation with a stirring mechanism. When roasting a large load of coffee beans, the shell needs to be rotated quickly. However, the shell is heavy, which limits the rotation speed. Furthermore, if the shell rotates too fast, it will generate a large centrifugal force, making it difficult for the coffee beans inside to be roasted, thus reducing the roasting effect. By adjusting the speed of the blades to push the coffee beans, it can be adapted to both large and small loads of coffee beans, thus improving both the roasting effect and efficiency.

[0030] (v) This invention uses a cyclone dust collector and a third fan to absorb the silver skin. By adjusting the air volume of the third fan, during the coffee bean roasting process, the third fan draws the silver skin from the shell into the cyclone dust collector, and the silver skin falls downward into the collection bucket; thus removing impurities from the coffee beans and ensuring the taste and flavor of the coffee beans. Attached Figure Description

[0031] Figure 1 A schematic diagram of the structure of a coffee bean roaster according to the present invention is shown; Figure 2 for Figure 1 Another perspective view; Figure 3 for Figure 2 Another perspective view; Figure 4 This is a schematic diagram of the structure of the baking component of the present invention; Figure 5 for Figure 4 A sectional view; Figure 6 This is a schematic diagram of the cooling assembly of the present invention; Figure 7 for Figure 6 A sectional view; Figure 8 for Figure 1 The overall diagram.

[0032] The attached diagram is labeled as follows: 1. Box body; 11. Hopper; 12. Casters; 2. Baking assembly; 21. Shell; 211. Baking section; 212. Air inlet; 213. Vent; 214. Valve; 22. Stirring mechanism; 221. Shaft; 222. Stirring rod; 223. Blade; 23. Air inlet channel; 24. Motor; 25. Cylinder; 3. Cooling assembly; 31. Cooling box; 311. Discharge pipe; 32. Cooling plate; 321. Through hole; 33. First fan; 34. Second fan; 35. Cooling channel; 4. Cyclone dust collector; 41. Collection bucket; 5. Third fan. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the device proposed by this invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of this invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, only for the purpose of conveniently and clearly illustrating the embodiments of this invention. Please refer to the drawings to make the objectives, features, and advantages of this invention more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and objectives achieved by this invention, should still fall within the scope of the technical content disclosed in this invention.

[0034] Example 1: like Figure 1As shown, a coffee bean roaster includes: a housing 1, a roasting assembly 2 disposed within the housing 1, and a cooling assembly 3. The cooling assembly 3 is located at the bottom of the roasting assembly 2. After the coffee beans are roasted in the roasting assembly 2, they fall into the cooling assembly 3 for cooling. A hopper 11 is disposed on the inner top wall of the housing 1. The bottom of the hopper 11 is connected to and communicates with the top of the roasting assembly 2. Coffee beans are poured into the hopper 11, thereby entering the roasting assembly 2. A solenoid valve can be installed on the hopper 11 to automatically open and complete the feeding. The housing 1 is equipped with casters 12, which facilitate the movement and transport of the housing 1.

[0035] The roasting component 2 includes a shell 21 and a stirring mechanism 22 disposed within the shell 21. The stirring mechanism 22 is rotatably connected to the shell 21. The top of the shell 21 is connected to the bottom of the hopper 11. Coffee beans enter the shell 21 through the hopper 11. The shell 21 is made of titanium alloy and has a wall thickness of 3mm. The shell 21 is made of high-strength material and has a thin wall. Reducing the thickness ensures high strength while reducing heat storage and thermal inertia. The heat transfer between the shell 21 and the coffee beans is good, eliminating the need to heat and cool the shell 21 beforehand, thus reducing energy loss and improving environmental friendliness.

[0036] like Figure 4 and Figure 5 As shown, the housing 21 includes a baking section 211 and an air inlet section 212. The baking section 211 is located at the bottom of the housing 21, and the air inlet section 212 is located on the side of the housing 21. The baking section 211 is detachably connected to a valve 214, which is located away from the housing 21, thus creating an opening in the baking section 211. Specifically, a cylinder 25 is connected to the inner wall of the housing 1. The output shaft of the cylinder 25 is connected to the valve 214, and the cylinder 25 drives the valve 214 to abut against or separate from the baking section 211.

[0037] It should be noted that the roasting section 211 is arc-shaped and has an opening; the valve 214 is also arc-shaped and cooperates with the roasting section 211. The valve 214 completely covers the opening and fits tightly against the roasting section 211. When roasting coffee beans, the cylinder 25 drives the valve 214 to fit tightly against the roasting section 211, sealing the bottom of the housing 21 to prevent beans from leaking out. After roasting, the cylinder 25 drives the valve 214 to separate from the roasting section 211, opening the roasting section 211, and allowing coffee beans to fall from the opening into the cooling assembly 3. The valve 214 fits tightly against the roasting section 211, reducing the gap between the valve 214 and the roasting section 211, preventing the housing 21 from expanding due to heat and causing unroasted coffee beans to fall into the cooling assembly 3.

[0038] In this embodiment, the air inlet 212 is connected to the roasting section 211. The air inlet 212 is an inclined surface and has ventilation holes 213. The angle between the air inlet 212 and the first direction is 45°. The opening ratio of the ventilation holes 213 is 35%, which is the ratio of the area of ​​the hole to the entire plate. The diameter of the ventilation holes 213 is 3mm. When roasting a large load of coffee beans, the angle between the air inlet 212 and the first direction is 60°, and the first direction is a horizontal direction.

[0039] The air inlet 212 is connected to the air inlet channel 23, the end face of which is tangent to the roasting section 211. The air inlet channel 23 is used to connect to a hot air blower. The hot air blower generates hot air that enters the air inlet channel 23, and then passes through the air inlet 212 into the housing 21 to exchange heat with the coffee beans, thus roasting them. Specifically, the air inlet 212 is designed as a slope with ventilation holes 213, increasing the cross-sectional area of ​​the ventilation holes 213 and the hot air flow rate. This increased airflow leads to faster heat exchange with the coffee beans, improving roasting efficiency. The sloped design of the air inlet 212 increases the airflow rate, and when coffee beans are roasted onto the air inlet 212, they fall quickly, further improving roasting efficiency. The air inlet channel 23 is tangent to the roasting section 211. The bottom of the air inlet channel 23 is sloping, and the cross-sectional area of ​​the air inlet channel 23 is increased, which increases the air volume per unit time. Combined with the air inlet section 212 with an increased cross-sectional area, more hot air enters the housing 21, thereby accelerating the heat exchange with the coffee beans and improving roasting efficiency.

[0040] like Figure 3 As shown, a motor 24 is also installed inside the housing 1. The stirring mechanism 22 includes a rotating shaft 221 connected to the output shaft of the motor 24, and multiple stirring rods 222 are equidistantly arranged on the rotating shaft 221. Blades 223 are connected to the stirring rods 222. The output shaft of the motor 24 passes through the housing 21 and is coaxially connected to the rotating shaft 221. The motor 24 drives the rotating shaft 221 and the stirring rods 222 to rotate, thereby driving the blades 223 to rotate. The blades 223 rotate inside the housing 21 to push the coffee beans, replacing the traditional rotation of the housing 21, thereby achieving high-speed or low-speed stirring and avoiding the housing 21 not rotating due to slow speed when the load is large.

[0041] The number of blades 223 is 8, and there is a gap of 0.1mm between the blades 223 and the roasting section 211. Specifically, in conventional solutions, when roasting a large load of coffee beans, the shell 21 needs to be rotated rapidly. However, the shell 21 is relatively heavy, which limits its rotation speed. Furthermore, excessively rapid rotation of the shell 21 generates a large centrifugal force, making it difficult for the coffee beans inside to be roasted, thus reducing the roasting effect. This invention adjusts the speed of the blades 223 to push the coffee beans, adapting to both large and small loads of coffee beans, thereby improving both the roasting effect and efficiency.

[0042] Example 2: like Figure 6 As shown, in this embodiment 2, based on embodiment 1, the cooling assembly 3 includes a cooling box 31, a cooling plate 32 disposed within the cooling box 31, and a first fan 33 connected to the inner wall of the box body 1. The cooling box 31 is connected to the roasting section 211 via a cooling channel 35, which covers the opening of the roasting section 211. The output shaft of the cylinder 25 passes through the side wall of the cooling channel 35 and is connected to a valve 214. After the cylinder 25 pulls the valve 214, the coffee beans inside the shell 21 fall from the opening into the cooling channel 35 and then into the cooling box 31.

[0043] like Figure 7 As shown, a through hole 321 is formed on the cooling plate 32, with an opening ratio of 30% and a diameter of 3mm. Specifically, one end of the first fan 33 is connected to the cooling channel 35 via a pipe, and the other end of the first fan 33 is connected to the outside of the housing 1 via a pipe. The air volume of the first fan 33 is 800m³ / h. 3 / h. By adjusting the airflow of the first fan 33, the first fan 33 absorbs the hot air in the cooling box 31, and at the same time sucks up the coffee beans in the cooling box 31 to suspend them. The coffee beans jump on the cooling plate 32, and the sucked-up coffee beans will be squeezed down on the cooling plate 32, resulting in a good cooling effect and thus improving the cooling efficiency of the coffee beans.

[0044] The housing 1 is also equipped with a second fan 34, which is connected to the cooling box 31 via a pipe. Both the second fan 34 and the first fan 33 are connected to the cooling box 31 to facilitate convection and accelerate the cooling of the coffee beans. The cooling box 31 is equipped with a discharge pipe 311, which penetrates the side wall of the housing 1. After the coffee beans have cooled inside the cooling box 31, they flow out through the discharge pipe 311 for collection and easy removal. A solenoid valve can be installed on the discharge pipe 311 to automatically collect the cooled coffee beans.

[0045] Example 3: like Figure 2 As shown, in this embodiment 3, based on embodiment 1, a cyclone dust collector 4 is further installed on the inner wall of the housing 1. The cyclone dust collector 4 is connected to the housing 21 via a pipe. A collection bucket 41 and a third fan 5 are respectively installed at both ends of the cyclone dust collector 4. The third fan 5 is connected to the outside of the housing 1 via a pipe. By adjusting the airflow of the third fan 5, the airflow of the third fan 5 is 800 m³ / s. 3 During the coffee bean roasting process, the third fan 5 draws the silver sheet inside the casing 21 into the cyclone dust collector 4, where it falls downwards into the collection bucket 41, thereby removing impurities from the coffee beans and ensuring their taste and flavor.

[0046] The roasting and cooling process of a coffee bean roaster according to the present invention is as follows: First, coffee beans are poured into the hopper 11. The coffee beans enter the housing 21 through the hopper 11. Hot air generated by the hot air blower enters the air inlet channel 23. The hot air then enters the housing 21 through the air inlet 212 and exchanges heat with the coffee beans. Next, the motor 24 drives the rotating shaft 221 and the stirring rod 222 to rotate, thereby driving the blades 223 to rotate. The blades 223 push the coffee beans to ensure that the coffee beans are heated evenly. During this process, the cylinder 25 continuously pushes the valve 214 to keep it close to the housing 21 to prevent beans from leaking out. At the same time, the third fan 5 draws the silver sheet inside the housing 21 into the cyclone dust collector 4. The silver sheet falls downward into the collection bucket 41. After the coffee beans are roasted, cylinder 25 pulls valve 214 to retract, opening the opening at the bottom of housing 21. Coffee beans fall from the opening through cooling channel 35 into cooling chamber 31. First fan 33 absorbs the hot air from cooling chamber 31 and simultaneously lifts the coffee beans into a suspended state. The coffee beans bounce on cooling plate 32, and the lifted beans are pushed down, resulting in good cooling. Simultaneously, second fan 34 and first fan 33 are both connected to cooling chamber 31, creating convection to accelerate cooling. After cooling in cooling chamber 31, the coffee beans flow out through discharge pipe 311 for collection. The housing 21 of this invention is made of high-strength material and has thin walls, reducing energy loss. The air inlet 212 is designed with an angled surface, improving roasting efficiency. Furthermore, the valve 214, driven by cylinder 25, is tightly fitted to housing 21, preventing bean leakage and ensuring even roasting.

[0047] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A coffee bean roaster, characterized in that, include: Baking assembly (2), the baking assembly (2) includes a housing (21) and a stirring mechanism (22) disposed in the housing (21), the stirring mechanism (22) being rotatably connected to the housing (21); The shell (21) is made of titanium alloy and the wall thickness of the shell (21) is 1mm~5mm; The housing (21) includes a baking section (211) and an air inlet (212). The baking section (211) is detachably connected to a valve (214). The valve (214) is located away from the housing (21) to form an opening in the baking section (211). The air inlet (212) is connected to the baking section (211), the air inlet (212) is a slope, and the air inlet (212) has ventilation holes (213).

2. The coffee bean roaster as described in claim 1, characterized in that: The angle between the air inlet (212) and the first direction is 45°~60°, the opening ratio of the air vent (213) is 30%~40%, and the diameter of the air vent (213) is 2.5mm~4mm; The air inlet (212) is connected to the air inlet channel (23), the end face of the air inlet channel (23) is tangent to the baking part (211), and the air inlet channel (23) is used to connect to the hot air blower.

3. The coffee bean roaster as described in claim 1, characterized in that: Also includes: Box (1), the baking component (2) is located inside the box (1), and the inner wall of the box (1) is connected to the cylinder (25). The output shaft of the cylinder (25) is connected to the valve (214), and the cylinder (25) drives the valve (214) to abut against or separate from the baking part (211).

4. The coffee bean roaster as described in claim 1, characterized in that: The housing (1) is also equipped with a motor (24), and the stirring mechanism (22) includes a rotating shaft (221) connected to the output shaft of the motor (24), a plurality of stirring rods (222) are equidistantly arranged on the rotating shaft (221), and blades (223) are connected to the stirring rods (222). The number of blades (223) is 4 to 8, the baking part (211) is arc-shaped, and there is a gap between the blades (223) and the baking part (211), the gap being 0.1 mm to 0.2 mm.

5. The coffee bean roaster as described in claim 3, characterized in that: Also includes: Cooling assembly (3), the cooling assembly (3) is located inside the housing (1), the cooling assembly (3) includes a cooling box (31), a cooling plate (32) located inside the cooling box (31) and a first fan (33) connected to the inner wall of the housing (1). The cooling box (31) is connected to the baking section (211) through a cooling channel (35). One end of the first fan (33) is connected to the cooling channel (35) through a pipe, and the other end of the first fan (33) is connected to the outside of the box body (1) through a pipe. The air volume of the first fan (33) is 800m³. 3 / h~1200m 3 / h.

6. The coffee bean roaster as described in claim 5, characterized in that: The cooling plate (32) has through holes (321) with an opening ratio of 30%~40% and a diameter of 2mm~4mm.

7. The coffee bean roaster as described in claim 5, characterized in that: The housing (1) is also provided with a second fan (34), which is connected to the cooling box (31) via a pipe.

8. The coffee bean roaster as described in claim 6, characterized in that: The cooling box (31) is provided with a discharge pipe (311), which penetrates the side wall of the box body (1).

9. The coffee bean roaster as described in claim 3, characterized in that: The inner wall of the box (1) is provided with a hopper (11), which is connected to the shell (21); the box (1) is equipped with casters (12).

10. The coffee bean roaster as described in claim 3, characterized in that: The inner wall of the housing (1) is also provided with a cyclone dust collector (4), which is connected to the housing (21) through a pipe; The cyclone dust collector (4) is equipped with a collection bucket (41) and a third fan (5) at both ends. The third fan (5) is connected to the outside of the housing (1) through a pipe, and the air volume of the third fan (5) is 400m³. 3 / h~900m 3 / h.

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