Roasting equipment

Abstract

To provide a roasting device capable of preventing an air leakage from a blower passage with a simple structure and keeping an amount of air to be taken into a roasting pot.SOLUTION: A roasting device includes: a heating part 14 for heating air which passes a blower passage; a roasting pot 15 having a plurality of openings 16 where air passed through the heating part 14 passes; and a case 140 for storing the heating part 14 and forming an outline of a part of the blower passage. The roasting pot 15 is fitted into an attachment hole 141 arranged on an upper surface of the case 140, and a projected part 15a arranged on a side surface of the roasting pot 15 is abutted onto the upper surface of the case 140, so as to seal the blower passage. The number of components is reduced thereby to reduce a joint between components to be the cause of an air leakage in the blower passage. The joint is sealed by abutment of the projected part 15a to the upper surface of the case 140, so as to prevent the air leakage from the blower passage. Thus, a blowing amount required for stirring roasted objects can be kept.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a roasting device for roasting coffee beans and the like. [Background technology]

[0002] Conventionally, roasting devices have been known that include an air passage leading from an air intake port to an exhaust port, a roasting pot that houses the items to be roasted, a fan that blows air into the air passage, and a heating unit that heats the air sent to the roasting pot, and that roast the items while stirring them with the force of the air flow sent into the roasting pot.For example, Patent Document 1 discloses a roasting device that includes a roasting chamber (roasting pot) with a chamber barrel and an air intake ring attached to a bottom plate, the air intake ring is contained within the chamber barrel, and an annular airflow passage is formed between the air intake ring and the chamber barrel, and roasts the beans by taking in air flowing into the annular airflow passage from a second air intake port attached to the air intake ring into the roasting chamber. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 2022-524565 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the above-mentioned structure, the roasting chamber has a complex structure assembled from multiple parts, and there are many joints between the parts, which can cause air leakage.In a roasting device that roasts the items while stirring them using the force of the air flow sent into the roasting pot, air leakage reduces the amount of air flowing into the roasting pot, and there is a problem that not enough air is available to stir the items.

[0005] The present invention is intended to solve the above problems, and aims to provide a roasting device with a simple structure that prevents air leakage from the air duct and maintains the amount of air taken into the roasting pot. [Means for solving the problem]

[0006] The present invention provides A main body with an intake port and an exhaust port, a blower provided in an air passage extending from the intake port to the exhaust port; a heating unit that heats air passing through the air passage; A roasting pot having a cylindrical shape with a bottom and a plurality of openings through which the air heated by the heating unit passes; a case that houses the heating unit and forms an outer shell of a part of the air passage, The case has an upper surface provided with a mounting hole into which the roasting pot is fitted, The roasting pot has a convex portion extending outward on a side surface above the plurality of openings, The upper surface of the case and the protrusion come into contact with each other to seal the air passage. [Effects of the Invention]

[0007] By configuring as described above, it is possible to prevent air leakage from the air duct with a simple structure and maintain the amount of air taken into the roasting pot. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is an external perspective view of a coffee bean roasting device that is an example of a roasting device according to an embodiment of the present invention. FIG. [Figure 2] 1 is a cross-sectional view of a coffee bean roasting device as an example of a roasting device according to an embodiment of the present invention. [Figure 3] FIG. 2 is a diagram showing an air duct of a coffee bean roasting apparatus which is an example of the roasting apparatus of the present embodiment. [Figure 4] FIG. 2 is an enlarged cross-sectional view of a roasting pot and a heater case in this embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] A preferred embodiment of the present invention will be briefly described below, showing the operation of the present invention.

[0010] The present invention comprises a main body, a heating unit that heats air passing through an airflow path from an intake port to an exhaust port, a bottomed, cylindrical roasting pot with multiple openings through which the air heated by the heating unit passes, and a case that houses the heating unit and forms the outer periphery of a portion of the airflow path. The case has an upper surface with an attachment hole into which the roasting pot is fitted, and the roasting pot has a protrusion extending outward on its side above the multiple openings, with the protrusion abutting the top surface of the case to seal the airflow path. Fitting the roasting pot into the attachment hole forms an airflow path that allows air to flow from the case to the roasting pot, thereby reducing the number of joints between parts that can cause air leakage in the airflow path. Furthermore, the joint between the case and the roasting pot is sealed by abutting the protrusion against the top surface of the case, thereby preventing air leakage from the airflow path with a simple structure. This prevents a decrease in the amount of air taken into the roasting pot, thereby maintaining the amount of air necessary to stir the roasted items and preventing variations in the degree of roasting.

[0011] In addition, the convex portion is formed by hemming, and is positioned to serve as a guide line for the amount of roasted material to be put into the roasting pot. By forming the convex portion by hemming, a concave portion is formed on the inner surface of the roasting pot behind the convex portion. By using this concave portion as a guide for putting in the roasted material, the appropriate amount can be put in without measuring. This prevents the roasted material from being difficult to stir due to the amount of roasted material being put in too much, and therefore prevents variations in the degree of roasting.

[0012] The device also features a side air intake port on the side of the main body, located above the case. A space that forms part of the air passage is provided between the side of the main body and the case, and a guide section guides the air drawn in through the side air intake port into this space. The air drawn in through the side air intake port flows between the main body and the case, making it difficult for the heat from the heating section housed in the case to be transferred to the main body, preventing the main body from becoming too hot. Furthermore, the air is prevented from hitting the case or roasting pot, preventing the temperature of the air drawn into the roasting pot from dropping. [Example]

[0013] An embodiment of the present invention will now be described with reference to the drawings. In this embodiment, a coffee bean roaster will be described as an example of a roaster for roasting objects.

[0014] FIG. 1 is an external perspective view of a coffee bean roaster that is an example of a roaster of this embodiment, FIG. 2 is a cross-sectional configuration diagram of a coffee bean roaster that is an example of a roaster of this embodiment, and FIG. 3 is a diagram showing the air passage of a coffee bean roaster that is an example of a roaster of this embodiment.

[0015] The roasting apparatus 1 comprises a roasting section 2 and a chaff container 3. In this embodiment, coffee beans are the objects to be roasted, and therefore the apparatus is provided with a chaff container 3 that collects the husks that peel off from the coffee beans as the roasting progresses, and the chaff container 3 comprises a chaff case 3a that collects the husks and a lid 3b that is attached to the chaff case 3a. The chaff container 3 also has a chaff container-side casing 30 that forms the exterior, and exhaust ports 31 are provided on the top and side surfaces of the chaff container-side casing 30.

[0016] Roasting section 2 has roasting section-side casing 20 that forms the exterior. Roasting section-side casing 20 has first air inlet 21 and an operation unit 25 for instructing the operation of roasting device 1 on its side, and second air inlet 22 on its bottom. First air inlet 21 is located higher than the heater case, which will be described later. Roasting device 1 has casing 40 consisting of roasting section-side casing 20 and chaff container-side casing 30.

[0017] Furthermore, a roasting unit-side communication hole 23 is provided on the top surface of the roasting unit-side casing 20, and a chaff container-side communication hole 33 is provided on the bottom surface of the chaff container-side casing 30. The coffee bean roasting device of this embodiment is used with the chaff container 3 placed on the roasting unit 2, and air flows from the roasting unit-side communication hole 23 to the chaff container-side communication hole 33, forming an air passage that extends from the first air intake port 21 and the second air intake port 22 to the exhaust port 31. Details of the air passage will be described later.

[0018] Inside the roasting section 2, there are provided, in order from upstream in the air flow direction, a blower 13 consisting of a fan 11 and a motor 12 that blows air into the air passage, a heater 14 that heats the air passing through the air passage, and a bottomed, cylindrical roasting pot 15 that contains the items to be roasted. The side of the roasting pot 15 is provided with multiple openings 16 that take in the air heated by the heater 14 into the roasting pot 15, and the items to be roasted are roasted while being stirred by the taken-in air. In this embodiment, the openings 16 are provided on the side, but they can also be provided on the bottom, or on both the side and the bottom.

[0019] Furthermore, inside the roasting section 2, there are provided a fan case 110 that houses the fan 11 inside, and a heater case 140 that houses the heater 14 and the lower part of the roasting pot 15 inside. The lower part of the roasting pot refers to the part from the bottom surface to a height above the opening 16.

[0020] Fan case 110 is shaped like a circular bowl with an open top, with motor 12 of blower 13 attached in the center, and inlet ports 111 for taking air into fan case 110 provided around the area where motor 12 is attached. Heater case 140 is a cylindrical metal part with a top and sides, and has a mounting hole 141 in the center of the top into which roasting pot 15 is fitted.

[0021] Furthermore, the fan case 110 has a first flange 112 at the top end of the bowl shape, and the heater case 140 has a second flange 142 at the bottom end of the side. The fan case 110 and the heater case 140 are assembled with their flanges abutting each other and placed inside the roasting section 2, forming part of the outer shell of the air passage, and the insides of the fan case 110 and the heater case 140 also becoming part of the air passage.

[0022] In the above-described configuration, when the fan 11 is rotated by the drive of the motor 12, air is taken in through the first air intake port 21 and the second air intake port 22 and sent to the air passage. The air passage consists of the first air intake air passage 101, the second air intake air passage 102, the heating air passage 103, the roasting air passage 104, and the exhaust air passage 105.

[0023] Air taken in through the first air intake port 21 passes through the first air intake duct 101 leading from the first air intake port 21 to the inlet 111, and air taken in through the second air intake port 22 passes through the second air intake duct 102 leading from the second air intake port 22 to the inlet 111. At this time, the air passing through the first air intake duct 101 acts as a heat insulator, making it difficult for heat from the heater 14 to be transmitted to the roasting section side casing 20, preventing the exterior temperature from becoming too high. The air that has passed through the first air intake duct 101 merges with the air that has passed through the second air intake duct 102 and is taken into the fan case 110 through the inlet 111.

[0024] The air that has passed through the inlet 111 passes through the heating air duct 103, which runs from the inlet 111 to the opening 16. In the heating air duct 103, the air passing through the heater 14 is heated to a temperature at which the items to be roasted can be roasted. The air that has passed through the heating air duct 103 is taken into the roasting pot 15 through the opening 16.

[0025] The air that has passed through opening 16 passes through roasting air duct 104, which leads from opening 16 to roasting section side communication hole 23. In roasting air duct 104, the air roasts the objects to be roasted contained in roasting pot 15 while stirring them. The air that has passed through roasting air duct 104 is taken into chaff container 3 through chaff container side communication hole 33. In this embodiment, the air flowing toward chaff container 3 carries the shells peeled from the coffee beans to chaff container 3, where the coffee beans and shells are separated.

[0026] The air that has passed through the chaff container side communication hole 33 is exhausted through the exhaust air duct 105 that runs from the chaff container side communication hole 33 to the exhaust port 31. At this time, the shells carried by the air flow are collected in the chaff case 3a, and only the air is exhausted from the exhaust port 31.

[0027] It is preferable that the roasting apparatus 1 is provided with a guide part 24 for directing the air taken in through the first air intake port 21 into the first air intake duct 101. In this embodiment, the guide part 24 extends vertically downward from the top surface of the roasting unit side casing 20, and is located closer to the roasting unit side casing 20 than the outer periphery of the heater case 140. This prevents the air passing through the first air intake duct 101 from hitting the heater case 140 or the roasting pot 15, thereby preventing a drop in the temperature of the air taken into the roasting pot.

[0028] The shape of guide part 24 is not limited to that of this embodiment, and may be any shape that allows air taken in from first air intake port 21 to flow toward first air intake duct 101. For example, guide part 24 may have a shape that extends diagonally downward from the top surface of roasting unit side casing 20 toward the side surface of roasting unit side casing 20. In this case, the lower end of guide part 24 is located closer to roasting unit side casing 20 than the outer periphery of heater case 140.

[0029] 4 is an enlarged cross-sectional view of the roasting pot and heater case in this embodiment. The roasting pot 15 has a continuous protrusion 15a extending horizontally outward on the side surface above the opening 16, and the diameter of the roasting pot 15 at the protrusion 15a is larger than the diameter of the mounting hole 141.

[0030] When assembling the roasting device 1, fitting the roasting pot 15 into the mounting hole 141 connects the heating air passage 103 and the roasting air passage 104, forming an air passage. This reduces the number of joints between parts that can cause air leakage in the air passage. Furthermore, at the joints, the protrusions 15a come into contact with the top surface of the heater case 140, sealing the air passage, preventing air leakage from the joints with a simple structure.

[0031] Furthermore, if the roasting pot 15 is tilted when fitting it into the mounting hole 141, only a part of the protrusion 15a will come into contact with the top surface of the heater case 140, and a gap will be created between the non-contacting part and the top surface of the heater case 140. This gap can be visually confirmed, so the assembling worker will be made aware that the roasting pot 15 is tilted, preventing incorrect assembly and preventing a gap from being created between the top surface of the heater case 140 and the roasting pot 15.

[0032] If there is a gap between the top surface of heater case 140 and roasting pot 15, air will leak from there, reducing the amount of air taken into roasting pot 15, but by sealing the air passage by abutting convex portion 15a against the top surface of heater case 140, it is possible to prevent air leakage from the air passage with a simple structure and prevent a decrease in the amount of air taken into roasting pot 15 from opening 16. This makes it possible to maintain the amount of air necessary to stir the items to be roasted.

[0033] Moreover, it is preferable that convex portion 15a is formed by hemming at a position that serves as a guide line for the amount of roasted materials to be put into roasting pot 15. The position that serves as a guide line for the amount of materials to be put in means a position that corresponds to the height of the materials to be roasted when the amount that can be put in at one time (for example, 60 grams) is placed in roasting pot 15.

[0034] When convex portion 15a is formed by hemming, concave portion 15b is formed on the inner surface of roasting pot 15 behind convex portion 15a, and concave portion 15b serves as a guide for the amount to be put in. Therefore, by putting the roasted materials up to the height of concave portion 15b, the user can put in the appropriate amount of roasted materials for one roasting without having to measure them, which is very convenient.

[0035] If the amount of roasted material added is excessive, the amount of air taken into the roasting pot will be insufficient for the amount of air needed to stir the roasted material, making it difficult for the roasted material to be stirred. This results in variations in the degree of roasting among the roasted material obtained in one roast. By providing convex portion 15a through hemming and preventing the amount of roasted material added from being excessive, it is possible to prevent the material from being difficult to stir, thereby preventing variations in the degree of roasting.

[0036] Furthermore, if an appropriate amount of roasted material is added, when the roasted material is exposed to air and stirred, it moves within the roasting pot, digging up the material near the bottom of the roasting pot, and the material near the bottom of the roasting pot is also stirred. However, if the amount added is insufficient, the volume of the roasted material is low, making it difficult for air to hit the roasted material, so there is less roasted material to be stirred by the force of the air flow, and the roasted material near the bottom of the roasting pot is not stirred as easily. This causes variations in the degree of roasting. By providing convex portion 15a through hemming and ensuring that the amount of roasted material added is not insufficient, it is possible to prevent the roasted material from being difficult to stir, thereby preventing variations in the degree of roasting. [Explanation of symbols]

[0037] 13 Blower 14 Heater (heating part) 140 Heater Case (Case) 141 Mounting hole 15 Roasting pot 15a Convex part 16 aperture 21 First air intake (side air intake) 22 Second intake port 31 Exhaust port 40 Casing (main body) 101 First intake air duct (air supply duct) 102 Second intake air duct (air supply duct) 103 Heating air duct (ventilation duct) 104 Roasting air path (ventilation path) 105 Exhaust air duct (air supply duct)

Claims

1. A main body with an intake port and an exhaust port, a blower provided in an air passage extending from the intake port to the exhaust port; a heating unit that heats air passing through the air passage; A bottomed, cylindrical roasting pot having a plurality of openings through which the air heated by the heating unit passes; a case that houses the heating unit and forms an outer shell of a part of the air passage, The case has an upper surface provided with a mounting hole into which the roasting pot is fitted, The roasting pot has a convex portion extending outward on a side surface above the plurality of openings, The upper surface of the case and the protrusion come into contact with each other to seal the air passage.

2. 2. The roasting device according to claim 1, wherein the convex portion is formed by hemming and is positioned at a position that serves as a guide line for the amount of roasted material to be put into the roasting pot.

3. a space is provided between a side surface of the main body and the case, the space forming a part of the air passage; The air intake includes a side air intake provided on a side surface of the main body and positioned above the case, 3. The roasting apparatus according to claim 1, further comprising a guide portion for guiding the air drawn in through the side air intake port so that the air flows into the space.

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