JPH0726954Y2 - Roaster - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a roasting device configured to heat a granular food in a roasting drum and cool the granular food in a cooling drum.

(Prior Art) Conventionally, as a roaster of this type, for example, the actual Kaisho 61-15996
As described in the publication, a roasting drum and a cooling drum that rotate around mutually parallel axes are provided, and the coffee beans in the roasting drum are heated and roasted while rotating the roasting drum. Then, after transferring the coffee beans to the cooling drum, there is a system in which the coffee beans in the cooling drum are cooled while rotating the cooling drum.

(Problems to be solved by the invention) However, in this conventional configuration, since the drums are rotatably arranged around mutually different axes, the installation space for both drums increases, and the entire roaster is There is a problem that it becomes large and the handling is troublesome.

(Purpose of the Invention) This invention was made in order to solve the above-mentioned problems, and the purpose thereof is to secure a sufficient roasting capacity and cooling capacity, and to install an installation space for both drums. An object of the present invention is to provide a roasting device that can be made extremely small, and thus can make the entire roasting device compact.

(Means for Solving the Problems) In order to achieve the above-mentioned object, in the present invention, a pair of drums rotating around at least one substantially horizontal axis is provided, and a granular food product is provided in one roasting drum. In a roasting device that heats the same and cools the granular food in the other cooling drum, the roasting drums are superposed on the inside of the cooling drum at a position eccentric upward from the rotation axis. Then, a food storage space for cooling is formed between the outer peripheral surface of the roasting drum and the inner peripheral surface of the cooling drum.

(Operation) Therefore, according to this invention, the installation space for both drums is extremely reduced, and moreover, a necessary food storage space for cooling is secured between the roasting drum and the cooling drum.

Embodiment An embodiment embodying the present invention will be described in detail below with reference to the drawings.

The frame 1 is composed of a bottom wall 2, left and right side walls 3, 4 and a rear wall 5, and a left side wall 3 is detachably attached to the bottom wall 2 and the rear wall 5. An opening 6 is formed in the left side wall 3, and the opening 6
A disc-shaped support 8 is supported by a bracket 7 in the frame 1 so as to be located on a horizontal line passing through the center of the frame 1. The roasting drum 9 having a cylindrical shape is rotatably supported at both ends by the outer peripheral surface of the support 8 and the inner peripheral surface of the opening 6. A frame 10 made of transparent heat-resistant glass is provided at the left end opening of the roasting drum 9 so that almost half of the opening is closed.
The granular food such as coffee beans is drum 9 by the peripheral edge of the frame body 10 and the upper peripheral edge of the left end opening of the roasting drum 9.
An input port 11 for inputting into the heating space 9a therein is defined. A lid 12 made of transparent heat-resistant glass capable of opening and closing the charging port 11 is attached to the frame 10, and a window 13 for monitoring the inside of the roasting drum 9 by the lid 12 and the frame 10.
Is also used.

On the inner peripheral surface of the roasting drum 9, a spiral guide ridge 14 made of a wire having a diameter smaller than the outer diameter of the granular food is fixed, and the roasting drum 9 is rotated clockwise (forward direction) in FIG. When it is rotated to, the guide ridges 14 stir the granular food along the stirring path P shown in FIG. 1, while the granular food is not moved leftward to the window 13 side. A heating element 15 made of a far-infrared heater is attached to the supporting body 8 at its base end, and a portion 15a extending from substantially the center to the tip extends obliquely along the stirring path P of the granular food. . Further, as shown in FIG. 2, the tip portion 15b is described along the uppermost surface T of the granular food during the forward rotation of the roasting drum 9.

The left end peripheral wall of the roasting drum 9 is formed with a large number of small holes 16 for discharging the smoke and the hulls generated by roasting the granular food out of the roasting drum 9. A catalyst 17 for smoke oxidation is built in the upper part of the left side wall 3 facing the small holes 16 and a plurality of small holes 18 for smoke emission are formed. A first opening 19 is formed on the peripheral wall of the right end portion of the roasting drum 9, and an inner edge of one side portion of the opening 19 is a plane including the rotation axis of the roasting drum 9 and an inner edge portion of the other side portion of the opening 19. A first guide piece 20 protruding toward the inside of the roasting drum 9 so as to intersect with Sa is provided, and a discharge passage 21 is formed between the guide piece 20 and the opening 19. When the roasting drum 9 is rotated clockwise (forward direction) in FIG. 2, the first guide piece 20 covers the entire first opening 19 from the inside to the opening 19 of the granular food. When the roasting drum 9 is rotated counterclockwise (reverse direction) in FIG. 2 and the granular food is moved to the opening 19 by the action of the protrusion 14, the granular food is discharged through the discharge passage. It is discharged to the outside of the roasting drum 9 through 21.

A driven gear 22 is integrally formed on the outer periphery of the right end portion of the roasting drum 9, and the frame 1 is provided close to the driven gear 22.
The bracket 23 provided inside has a drive motor that can rotate forward and backward.
24 is supported, and a drive gear 26 on its motor shaft 25 is meshed with the driven gear 22. In order to guide the rotation of the roasting drum 9 by engaging with the outer periphery of the left end portion of the roasting drum 9,
A plurality of guide rollers 27 are rotatably supported around the opening 6 of the left side wall 3.

A heat shield plate 28 is disposed in the frame 1 adjacent to the left side of the drive gear 26, and a pair of transmission gears 29 is mounted on the outer periphery of both ends of the roasting drum 9. On the other hand, a ring-shaped partition plate 30 is attached to the outer periphery of the left end of the roasting drum 9, and the roasting drum 9 is provided between the partition plate 30 and the heat shield plate 28.
A cooling drum 31 having a cooling space 31a for cooling the roasted granular food is attached to the outer periphery of the. On the left and right side walls of the cooling drum 31, an insertion opening 32 is formed which is eccentric from the rotation axis of the roasting drum 9 by a predetermined amount, and is inserted into the roasting drum 9 through the insertion opening 32. An internal gear 33 that meshes with the transmission gear 29 of the roasting drum 9 is formed on the inner periphery of both insertion openings 32. Then, with the rotation of the roasting drum 9, the cooling drum 31 is interlockedly rotated in the same direction through the meshing of the gears 29 and 33.

A spiral guide ridge 34 made of a wire material having a wire diameter smaller than the outer diameter of the granular food is fixed to the inner peripheral surface of the cooling drum 31. The direction of rotation of the guide ridge 34 is the roasting drum 9 described above.
It is set in the direction opposite to the guide ridges 14 in the roasting drum 9
At the same time, when the cooling drum 31 is rotated in the counterclockwise direction (reverse direction) in FIG. 2, the granular food that has dropped into the cooling drum 31 through the first opening 19 of the roasting drum 9 is guided by the guide ridges 34. Thus, it is stirred while being moved leftward to the window 13 side.

A heat insulating material 35 made of a ceramic material is attached to the outer periphery of the roasting drum 9 to insulate between the heating space 9a of the roasting drum 9 and the cooling space 31a of the cooling drum 31.
A cooling fan 36 is mounted on the motor shaft 25 of the drive motor 24, and when the cooling drum 31 is rotated in the reverse direction by the drive motor 24, the rotation of the cooling fan 36 causes the outside air to pass through the frame 1.
Is introduced into the cooling drum 31 through the ventilation hole 28a of the heat shield plate 28 and the left side insertion hole 32 of the cooling drum 31, so that the drum 31
The air is blown from the right end to the left end inside, and the wind blows to cool the granular food in the drum 31.

The left side peripheral wall and the left side wall of the cooling drum 31 have a large number of small holes for discharging the skin of the granular food to the outside of the cooling drum 31.
38 are formed. On the right end peripheral wall of the cooling drum 31,
A second opening 39 for discharging food is formed, and the rotation axis of the cooling drum 31 and the second opening 39 are formed at the inner edge of one side of the opening 39.
Cooling drum so as to intersect the plane Sb including the inner edge of the other side
A second guide piece 40 that projects inward is provided, and a discharge passage 41 is formed between the guide piece 40 and the opening 39. The second guide piece 40 projects in the direction opposite to the first guide piece 20 in the roasting drum 9. Then, when the cooling drum 31 is rotated in the counterclockwise direction (reverse direction) in FIG. 2, the entire second opening 39 is covered from the inside by the second guide piece 40 so that the second portion of the granular food product is covered. When the cooling drum 31 is prevented from entering the opening 39 and the cooling drum 31 is rotated clockwise (forward direction) in FIG. The granular food product is discharged to the outside of the cooling drum 31 through the passage 41.

Below the second opening 39 and the small hole 38 of the cooling drum 31, the frame 1 is provided with grips 42a and 43a, respectively, and a box-shaped food storage container 42 and an outer skin storage container 43 having an open top are provided. Each is installed side by side so that it can slide in the front-back direction
The granular food product that drops through the second opening 39 of the cooling drum 31 and the outer skin that drops through the small holes 38 can be sorted and stored, and can be detached by the sliding operation. A guide wall 44 is provided on the left side wall 3 of the frame 1 for guiding the outer cover passing through the small hole 38 provided on the left side wall of the cooling drum 31 toward the outer cover container 43.

As shown in FIG. 3, a timer knob 45 is provided on the outer surface of the frame 1, and a drive motor 24 is driven by a timer (not shown) based on the roasting concentration set by the rotating operation of the timer knob 45. The forward / reverse rotation time and the operating time of the heating element 15 are set. As shown in FIG. 1, a switch 46 for stopping the roasting drum 9 at a predetermined rotation position is arranged on the bracket 7, and after the rotation time of the drive motor 24 set by the timer elapses. When the switch 46 is operated, the drive motor 24 is stopped and controlled so that the handle 12a of the lid 12 is located at the highest position shown in FIGS. 1 and 3. Is stopped at a predetermined rotation position.

When roasting granular foods such as coffee beans using the roaster configured as described above, a predetermined amount of granular foods is introduced from the charging port 11 to the heating space 9a of the roasting drum 9. After charging, the roasting concentration is set by the timer knob 45.
Then, according to the set roasting concentration, the roasting drum 9 is rotated in the clockwise direction of FIG. 2 by the drive motor 24 for a predetermined time, and the heating element 15 is operated to heat and roast the granular food. Roasted.

At this time, since the granular food is stirred while being moved toward the window 13 by the guide ridges 14, the progress of roasting can be easily monitored through the window 13. Also, this roasting drum 9
At the time of normal rotation of the first guide piece 20, the first opening 19 is covered from the inside by the first guide piece 20 at the lower part of the drum 9, and the granular food product is directed from the base end to the protruding end on the inner surface of the first guide piece 20. Since the operation of dropping to the inner surface of the drum is repeated after being moved, the granular food product does not fall out of the roasting drum 9 through the first opening 19 while being unroasted. Further, the outer skin separated from the food along with the roasting of the granular food passes through the small holes 16 of the roasting drum 9 and is guided by the guide wall 44 to be collected in the outer skin storage container 43. After being oxidized by the catalyst 17, it is led out of the frame 1 through the small holes 18.

By the operation of the timer (not shown), the operation of the heating element 15 is stopped, and at the same time, the rotation direction of the drive motor 24 is switched to the reverse direction, so that the roasting drum 9 moves counterclockwise (reverse direction) in FIG. When rotated, the guide ridges 14 move the granular food product toward the first opening 19 side. At this time, the first guide piece
Since the discharge passage 21 is formed between 20 and the first opening 19, the granular food product falls into the cooling drum 31 through the discharge passage 21 and the first opening 19.

Then, with the reverse rotation of the cooling drum 31 interlocked with the roasting drum 9, the granular food in the cooling drum 31 is agitated while being moved leftward by the guide protrusion 34. Further, as the drive motor 24 rotates in the reverse direction, the cooling fan 36 blows air from the right end to the left end of the cooling drum 31, and the air blows to cool the granular food product. During this cooling operation, the outer skin separated from the granular food product falls into the outer skin container 43 through the small holes 38 directly or along the guide wall 44 and is collected there.

Further, when the cooling drum 31 is rotated in the reverse direction, the drum 31 is rotated opposite to the first guide piece 20 when the roasting drum 9 is rotated in the reverse direction.
In the lower part of the second opening 39, the second opening 39 is covered from the inside by the second guide piece 40, and after the granular food product moves on the inner surface of the second guide piece 40 from its base end toward the protruding end, Since the dropping operation is repeated, the granular food product does not fall out of the cooling drum 31 through the second opening 39 without being cooled. In addition, in this embodiment, since the heat insulating material 35 is arranged on the outer periphery of the roasting drum 9, the heating space 9a in the roasting drum 9 and the cooling space 31a in the cooling drum 31 are thermally insulated. The cooling efficiency can be increased.

When the cooling operation is completed and the rotation direction of the drive motor 24 is changed again to rotate in the normal direction, the cooling drum 31 is rotated in the clockwise direction in FIG. Then, the guide ridge 34 moves the granular food product to the right toward the second opening 39 side. At this time, since the discharge passage 41 is formed between the second guide piece 40 and the second opening 39, the granular food product passes through the discharge passage 41 and the second opening 39 and is stored in the food storage container 42. Fall to.

Then, when the rotation of the drive motor 24 is stopped and the food discharging operation is completed, by sliding the containers 42 and 43 forward, the roasted and cooled granular food and the outer skin can be taken out from the frame 1. it can.

As described above, in this embodiment, substantially the entire roasting drum 9 is disposed so as to be superposed on the inside of the cooling drum 31 at a position eccentric upward from the rotation axis, and the outer periphery of the roasting drum 9 is arranged. Since the food storage space 31a for cooling is formed between the surface and the inner peripheral surface of the cooling drum 31, the installation space for both the drums 9 and 31 with the necessary roasting capacity and cooling capacity secured. Can be made extremely small, and thus the entire roaster can be made compact.

The invention is not limited to the above embodiment,
For example, it is possible to arrange only a part of the roasting drum 9 so as to be superposed on the inside of the cooling drum 31, and to dispose the first opening 19 and the like at the superposed part of the roasting drum 9.

(Effects of the Invention) As described in detail above, the present invention can make the installation space for both drums extremely small while ensuring the necessary and sufficient roasting capacity and cooling capacity. It has the excellent effect that it can be made compact.

[Brief description of drawings]

FIG. 1 is a front sectional view of a roasting device embodying the present invention, and FIG.
The drawing is a sectional view taken along the line AA in FIG. 1, and FIG. 3 is a perspective view. 9 ... Roasting drum, 31 ... Cooling drum, 31a ... Cooling space as food storage space.

Claims (1)

[Scope of utility model registration request] 1. A pair of drums (9, 31) rotating around at least one substantially horizontal axis, which heats the granular food in one roasting drum (9) and the other cooling drum (31). ), The roasting drum (9) is arranged so that the granular food is cooled inside the cooling drum (31) inside the cooling drum (31) at a position eccentric upward from the rotation axis thereof. A roasting device, wherein a food storage space (31a) for cooling is formed between the outer peripheral surface of the roasting drum (9) and the inner peripheral surface of the cooling drum (31).