JP2001333756A - Roasting apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roasting apparatus capable of uniformly roasting a material and easily taking out the roasted material. SOLUTION: A stirring member 18 equipped with a horizontal stirring member 18a extended in the direction of a revolving shaft and a slant stirring member 18b extended in a direction inclined to the direction of the revolving shaft is installed on the inside of a rotary drum 7. In roasting, coffee beans stored in the rotary drum 7 are stirred while being pushed out in the rotation direction by the horizontal stirring member 18a according to the rotation of the rotary drum 7. On the other hand, after the roasting, the roasted coffee beans in the rotary drum 7 are discharged to the outside of the rotary drum 7 by the slant stirring member 18b according to the rotation of the rotary drum 7 in the direction opposite to that in the roasting while being drawn near to the other end part of the rotary drum 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to coffee beans, soybeans,
The present invention relates to a roasting apparatus for roasting a roasted object such as wheat while stirring.

[0002]

2. Description of the Related Art
When roasting coffee beans, soybeans, barley, etc., it is preferable to roast while stirring the roasted food rather than roasting the roasted food as it is. Various roasting apparatuses for roasting while stirring an object have been proposed.

For example, as shown in FIG. 8A, a cylindrical rotary drum (51) arranged in a horizontal state, and a horizontal rotary drum (51) provided on an inner surface of the rotary drum (51) along a rotation axis direction. A roasting device provided with a stirring member (52) is known. The roasting device uniformly roasts the to-be-roasted material contained in the rotating drum (51) while extruding and stirring it with a horizontal stirring member (52) according to the rotation of the rotating drum (51). However, in this roasting apparatus, in order to take out the material to be roasted from the rotating drum (51), the rotating drum (51) must be manually or automatically inverted, and the material to be roasted is rotated by the rotating drum (51). There was a drawback that it could not be easily taken out from).

In order to solve this difficulty, as shown in FIG. 8B, a rotating drum (53) having a truncated conical shape arranged in a horizontal state, and an inner surface of the rotating drum (53) is provided with a rotating shaft direction. There is proposed a roasting apparatus provided with a horizontal stirring member (54) provided along. According to this, the roasted matter stored in the rotating drum (53) can be gathered to the large-diameter end by its own weight, and can be easily taken out from the large-diameter end. However, even at the time of roasting, since the to-be-roasted material gathers as a lump at the large-diameter end of the rotary drum (53) by its own weight, only the outer to-be-roasted material is exposed to the heat source, and It is difficult for the heat source to reach the roasted material,
There is a problem that the roasted food cannot be roasted evenly. Further, since the roasted material gathers at the large-diameter end of the rotary drum (53), the density of the roasted material at the other small-diameter end decreases, so that heat escapes but increases. There was also.

Further, as shown in FIG. 8C, a cylindrical rotary drum (55) arranged in a horizontal state, and an inner surface of the rotary drum (55) is provided in a direction inclined with respect to the rotation axis direction. There is known a roasting apparatus including an inclined stirring member (56) provided along the roasting device. The roasting device converts the roasted object stored in the rotating drum (55) into the rotating drum (55).
The roasted material is roasted while being agitated in such a manner as to be extruded by the inclined stirring member (56) according to the rotation of the rotating drum, and the roasted material is applied to one end by the inclined stirring member (56) according to the reverse rotation of the rotary drum (55). Collect and remove from the rotating drum (55). However, even in this roasting apparatus, the roasted material can be uniformly stirred in the same manner as the above-described roasting device because the roasted material gathers together at the other end in a lump during roasting. There was a problem that the heat escaped but there was much.

[0006] The present invention has been made in view of the above-mentioned problems, and is capable of roasting a roasted product evenly and easily roasting the roasted product after roasting. The purpose is to provide the device.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a rotating drum arranged so that a rotating shaft extending in a longitudinal direction is horizontal, and a rotating drum inside or outside the rotating drum. Provided with a heat source, a roasting device that roasts with the heat source while stirring the roasted object stored in the rotating drum according to the rotation of the rotating drum, on the inner peripheral surface of the rotating drum, A horizontal stirring member extending in the rotation axis direction and an inclined stirring member extending in a direction inclined with respect to the rotation axis direction are provided, and at the time of roasting, the roasted material accommodated in the rotation drum is rotated by the rotation drum. While being stirred while being extruded in the rotation direction by the horizontal stirring member according to the rotation, after roasting, the roasted material in the rotatable drum is rotated by the rotation of the rotatable drum in a direction opposite to the roasting direction. By Wherein the discharged out rotary drum while closer to one end of the rotary drum.

[0008] According to this, at the time of roasting, the roasted material accommodated in the rotary drum is stirred while being pushed in the rotational direction by the horizontal stirring member according to the rotation of the rotary drum, so that the roasted material is rotated. It spreads evenly in the length direction of the drum, so that the material to be roasted can be roasted evenly, and the escape of heat can be minimized.

After roasting, the roasted material in the rotatable drum is moved to one end of the rotatable drum by the inclined stirring member according to the rotation of the rotatable drum in a direction opposite to the roasting direction. Since it is discharged outside the rotating drum, the roasted material can be easily taken out from the rotating drum. The rotating drum is not limited to a cylindrical one, but may be a rectangular one.

When the rotating drum is provided with a plurality of chaff discharge holes in its peripheral wall, it is possible to easily discharge the chaff of the roasted material generated during roasting from the chaff discharge hole. it can. In addition, the chaff discharge hole is
It may be provided by drilling the peripheral wall of the rotating drum, or may be provided by forming the peripheral wall of the rotating drum in a mesh shape.

When the horizontal stirring member and the inclined stirring member are integrally formed, the horizontal stirring member and the inclined stirring member can be easily provided on the inner peripheral surface of the rotary drum.

When the heat source is provided at the center of the rotary drum along the length direction, heat of the heat source is uniformly radiated toward the inner peripheral surface of the rotary drum. The material to be roasted in the drum can be efficiently roasted.

In the case where a cylindrical inner drum having a plurality of heat passage holes in a peripheral wall is provided inside the rotary drum so as to cover the heat source, the roasted material that flies along with the stirring is a heat source. This prevents direct contact with the roasting material and prevents the roasted material from burning. Further, the heat of the heat source can pass through the heat passage holes of the small-diameter rotary drum and reach the roasted object in the rotary drum. The heat flow holes may be provided by drilling the peripheral wall of the inner drum, or may be provided by forming the peripheral wall of the inner drum in a mesh shape.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a roasting apparatus according to an embodiment of the present invention will be described with reference to FIGS.

This roasting apparatus roasts coffee beans. A roasting section (2), a chaff take-out section (3),
A coffee bean take-out section (4), an air circulation section (5) and an operation section (6) are provided.

The roasting section (2) is a place where roasting of coffee beans is performed, and a cylindrical rotating drum (7) and a cylindrical inner drum (8) provided inside the rotating drum (7).
An electric heater (9) provided along a length direction at a central portion in the rotary drum (7); and a far-infrared radiation material (1) provided outside a peripheral wall of the rotary drum (7).
0).

The rotating drum (7) is a cylindrical drum having a rotating shaft in the longitudinal direction and having a cylinder at both ends, and a plurality of connecting members inside the inner drum (8) in such a manner that the rotating shafts coincide with each other. It is fixed via a rod (11). The inner drum (8) is rotatably supported by bearing plates (12) and (13) whose opposite ends project from the upper surface of the base (1) so as to face each other. 7) and the inner drum (8) are arranged horizontally in a double structure above the base (1). The large-diameter sprocket (1) is located at the rear end of the inner drum (8).
4), and the large-diameter sprocket (14) is provided with a drum driving motor (1) provided inside the base (1).
5) Small diameter sprocket (16) and transmission belt (17)
Are interlocked through. Therefore, when the drum driving motor (15) is driven to rotate the small diameter sprocket (16), the rotation is transmitted to the large diameter sprocket (14) of the inner drum (8) via the transmission belt (17). The rotating drum (7) and the inner drum (8) rotate integrally above the base (1). Since the large-diameter sprocket (14) of the inner drum (8) is formed larger in diameter than the small-diameter sprocket (16), the rotary drum (7) and the inner drum (8) are driven by a small torque of the drive motor. Can be easily rotated.

As shown in FIGS. 4 and 5, the rotating drum (7) is provided with a stirring member (18) having a triangular shape in a plan view along a part of the inner peripheral surface thereof. I have.
The stirring member (18) includes a horizontal stirring section (18a) extending along the rotation axis direction and an inclined stirring section (18b) extending along a direction inclined with respect to the rotation axis direction. (18a) and the inclined stirrer (18b) are integrally formed via a triangular top plate (18c).

During roasting, as shown in FIG. 4 (a), the coffee beans contained in the rotary drum (7) are turned into the horizontal stirring unit (18) according to the rotation of the rotary drum (7).
The mixture is agitated while being extruded in the rotation direction according to a). As a result, the coffee beans spread evenly in the length direction of the rotary drum (7), so that the coffee beans can be roasted evenly and the escape of heat can be minimized. On the other hand, after roasting, as shown in FIG. 4 (b), the roasted coffee beans in the rotary drum (7) are tilted by the inclined stirrer according to the rotation of the rotary drum (7) in the direction opposite to that during roasting. (18b), it is discharged to the outside of the rotary drum (7) from the bean discharge port (12b) of the support plate (12) on the front side, which will be described later, while being close to one end of the rotary drum (7). The coffee beans can be easily removed from the rotating drum (7).

Further, the rotating drum (7) is provided with a plurality of chaff discharge holes (7a) by forming the peripheral wall thereof in a mesh shape. For this reason, the coffee beans chuff generated during roasting is discharged from the chaff discharge hole (7a) directly below the rotary drum (7). The chaff discharge hole (7a) has such a size that only the chaff of the coffee beans can pass without passing the coffee beans.

The electric heater (9) radiates heat for roasting coffee beans, and is supported at both ends by supporting plates (12) and (13) to thereby form a central portion of the rotating drum (7). Are provided in parallel with each other along the length direction. For this reason, the heat of the electric heater (9) is uniformly radiated toward the inner peripheral surface of the rotating drum (7), and the coffee beans in the rotating drum (7) can be roasted efficiently. A heat reflection plate (19) is provided between the electric heaters (9) to prevent thermal interference between the electric heaters (9), or a temperature sensor (20) to be described later is connected to the electric heater (9). 9) It is intended to prevent direct exposure to the heat.
A temperature sensor (20) is provided in the rotating drum (7), and a control unit (21) described later controls an electric heater (9) based on the temperature detected by the temperature sensor (20).
The heating temperature is controlled.

The inner drum (8) is a cylindrical drum having a plurality of heat passage holes (8a) with a peripheral wall formed in a mesh shape and covering the periphery of the electric heater (9). It has been done. Thereby, the coffee beans soaring along with the stirring do not directly contact the electric heater (9), thereby preventing the coffee beans from being scorched. Further, the heat radiated from the electric heater (9) can reach the coffee beans contained in the rotating drum (7) through the heat passage holes (8a).

The far-infrared radiating material (10) is a thin plate provided with a far-infrared radiating layer on the surface facing the peripheral wall of the rotating drum (7), and a heat insulating material (37) is provided on the entire back surface. It is provided. This far-infrared radiation material (10)
Is provided outside the peripheral wall of the rotary drum (7) so as to cover the peripheral wall of the rotary drum (7) except for the lowermost portion in the radial direction over the upper half circumference, and both ends are placed on the base (1). Is fixed to the screw.

As described above, since the far-infrared radiation material (10) covers the upper half or more of the peripheral wall of the rotary drum (7), most of the heat radiated from the electric heater (9) is far-infrared radiation. A large amount of far-infrared rays is radiated from the far-infrared radiating material to reach the material (10), the coffee beans in the rotating drum (7) can be heated from the inside thereof, and the coffee beans can be efficiently heated. Becomes possible. Further, since the far-infrared radiation material (10) does not cover the radially lowermost portion of the peripheral wall of the rotating drum (7), the coffee beans chaff generated during roasting is removed from the chaff discharge hole (7a) of the rotating drum (7). It can be discharged below the rotating drum (7). Furthermore, since the heat insulating material (37) is provided on the back surface of the far-infrared radiation material (10), it is possible to reliably prevent the heat radiated from the electric heater (9) from escaping to the outside of the rotary drum (7). Can be.

The front side support plate (12) of the support plates (12) and (13) has a rectangular bean insertion port (12a) formed at the top thereof, and further has a bean input port (12a). Is provided with a bean introduction guide member (22), and coffee beans are introduced into the rotary drum (7) from the bean introduction port (12a) while being guided by the bean introduction guide member (22). ing. Also, a rectangular bean discharge port (12b) is formed in the lower part of the support plate (12) on the front side, and the roasted coffee beans in the rotating drum (7) are removed as described above. According to the reverse rotation of the rotating drum (7), the beans discharge port (1
2b).

The chaff take-out section (3) contains a chaff of coffee beans generated at the time of roasting and takes it out of the roasting apparatus.
A drawer (24) is provided at the center of the chaff storage tray (23) so as to be detachable. Further, a rectangular chaff discharge port (25) is formed at a position below the rotary drum (7) on the upper surface of the base (1). When the drawer (24) is pushed into the base (1), the chaff storage tray (23) is disposed below the rotating drum (7), and is moved from the chaff discharge hole (7a) of the rotating drum (7). The discharged chaff is the chaff discharge port (25) on the upper surface of the base (1).
And stored in the chaff storage tray (23). When the drawer (24) is pulled out from the inside of the base (1) to the front side, the chaff storage tray (23) is disposed in front of the base (1), and the chaff storage tray (23) is pulled out of the drawer (2).
4) Can be removed.

The bean take-out section (4) is a place where the roasted coffee beans are housed and taken out of the roasting apparatus, and a bean housing box (26) housed inside the front side of the base (1), A second bean discharge port (27) drilled in front of the rotary drum (7) on the upper surface of the table (1), a bean discharge port (12b) and a second bean discharge port (27) of the support plate (12). And a guide member (28) for discharging beans. Further, a portion accommodating the bean accommodating box (26) communicates with an air circulation unit (5) described later, and the bean accommodating box (26) is provided with a mounting plate ( It is stored inside the base (1) in a state of being placed on 29).

Thus, when the bean storage box (26) is housed inside the base (1), the bean discharge guide member (28), the second bean discharge port (27) and the bean storage box (26) Are arranged in the vertical direction, the coffee beans discharged from the bean discharge port (12b) of the support plate (12) slide down the bean discharge guide member (28), and then fall into the second bean discharge port (27). Pass through the beans storage box (26)
To be housed.

The bottom surface of the bean storage box (26) and the mounting plate (29) are each provided with a plurality of air circulation holes (26).
a) (29a) is drilled. For this reason, when the bean storage box (26) is housed inside the base (1), the inside of the bean storage box (26) and the air circulation unit (5)
Is in communication, the air inside the bean storage box (26) flows between the coffee beans stored in the bean storage box (26) by the operation of the fan (31) of the air circulation unit (5) described later. After flowing, it flows out from the air circulation holes (26a) (29a) to the air circulation part (5) below the bean storage box (26), and the coffee beans in the bean storage box (26) can be cooled.

The air circulating section (5) is connected at one end to a portion for accommodating the bean accommodating box (26) where air is circulated when the coffee beans accommodated in the bean accommodating box (26) are cooled. Air flow pipe (30) to be used and a fan (31) arranged in the middle of the air flow pipe (30)
And an air discharge tube (32) connected to the other end of the air flow pipe (30). When the fan drive motor (33) is driven to operate the fan (31), the air flowing out of the air passage holes (26a) (29a) of the bean storage box (26) and the mounting plate (29) is Air flow passage tube (30), fan (31) and air discharge tube (32)
And is discharged out of the apparatus.

The operation section (6) is, as shown in FIG.
START button (34a), OUT button (34b), FAN
A right panel (34) consisting of a button (34c) and a power switch (34d); an AMOUNT knob (35a);
Left side panel (35) composed of an EGREE knob (35b), a time display section (35c) and a time change section (35d)
It is composed of

The START button (34a) on the right panel
Is a button for starting roasting of coffee beans, and a start button (34a) with the power switch (34d) turned on.
Pressing starts heating of the electric heater (9) and driving of the drum drive motor (15), and thereafter, the control unit (21)
Thereby, the temperature control of the electric heater (9) and the driving of the drum drive motor (15) and the fan drive motor (33) are collectively managed. OUT button (34b) is START
When the roasting is stopped after pressing the button (34a), when the OUT button (34b) is pressed, the electric heater (9), the driving motor for the drum (15), and the driving motor for the fan (33) are pressed. ) Stops driving. FAN button (34c)
Is used to extend or shorten the cooling time of the coffee beans. When the fan button (34c) is pressed during operation of the fan, the drive of the fan drive motor (33) is stopped, and when the fan is stopped, the fan button (34c) is stopped. ), The fan drive motor (33) is driven.

The AMOUNT knob (35a) on the left side panel (35) is for inputting the mass of the roasted coffee beans. The DEGREE knob (35b) is for inputting the roasting degree of coffee beans such as light roasting and deep roasting, and the control unit (2) based on the input values of the mass and the roasting degree.
1) sets roasting time and cooling time of coffee beans.

The time display section (35c) displays the time from the start of roasting to the end of roasting. The roasting time changing unit (35d) sets an extension time or a shortening time of the roasting time when the roasting is extended or shortened by looking at the time display on the time display unit (35c).

A dome-shaped cover (36) is provided on the upper surface of the base (1) so as to cover the roasting section (2), so as to enhance the beauty and safety of the roasting apparatus. It has been done.

Next, a procedure for roasting coffee beans by the roasting apparatus will be described.

First, coffee beans to be roasted are put into the rotating drum (7) from the bean inlet (12a) along the bean feeding guide member (22), and all the coffee beans to be roasted are turned on the rotating drum ( 7) Store inside. Then, the user inputs the mass of the housed coffee beans by the DEGREE knob (35a) and inputs the degree of roasting of the coffee beans according to his preference by the AMOUNT knob (35b).

In this state, when the power switch (35d) is turned on and the START button (34a) is pressed, the electric heater (9) is rapidly heated, and the drum drive motor (15) is driven to rotate the rotary drum. (7) and the inner drum (8) start rotating together. Then, the coffee beans contained in the rotating drum (7) are stirred by the horizontal stirring unit (18a) in a manner of being pushed out in the rotating direction by the rotation of the rotating drum (7), while being stirred by the electric heater (9). Roasted by radiated heat.

The coffee beans accommodated in the rotating drum (7) are stirred in such a manner as to be pushed out in the rotating direction by the horizontal stirring section (18a), so that the coffee beans are moved in the longitudinal direction of the rotating drum (7). Spreads evenly, roasts coffee beans evenly, and minimizes the escape of heat. The far-infrared radiation material (10) receives the heat from the electric heater (9) and emits far-infrared rays toward the inside of the rotating drum (7). So that coffee beans can be roasted efficiently. Further, since the heat insulating material (37) is provided on the back surface of the far-infrared radiation material (10), it is possible to reliably prevent the heat radiated from the electric heater (9) from escaping to the outside of the rotary drum 87). In addition, the coffee bean chuff generated during roasting is sequentially discharged from the chaff discharge hole (7a) of the rotating drum (7), and is stored through the chaff discharge port (25) on the upper surface of the base (1). It is stored in a tray (23).

When the roasting of the coffee beans is completed after a predetermined time has elapsed since the start of the roasting, the driving motor (15) for the drum is driven in the reverse direction by the command of the control unit (16). The rotating drum (7) and the inner drum (8) start rotating together in the opposite direction. Then, the roasted coffee beans in the rotating drum (7) are supported by the inclined stirring member (18b) while leaning to one end of the rotating drum (7) according to the rotation of the rotating drum (7) in the opposite direction. After being sequentially discharged from the bean discharge port (12b) of the plate, it slides down the bean discharge guide member (28), passes through the second bean discharge port (27), and is stored in the bean storage box (26). .

The roasting time of the coffee beans was determined by DEGREE.
It is set by the control unit (21) based on the input values input to the knob (35a) and the AMOUNT knob (35b). Also, if you extend or shorten the roasting time,
Based on the roasting time displayed on the roasting time display section (35c), the roasting time changing section (35d) sets an extended or shortened roasting time.

When the coffee beans in the rotary drum (7) are all stored in the bean storage box (26), the controller (2)
According to the command of 1), the fan drive motor (33) is driven to operate the fan (31). Along with this, the air inside the bean storage box (26) is
After flowing between the coffee beans contained in the
6a) After passing through (29a), it flows out to the air circulating section (5) below the bean storage box (26), and flows into the bean storage box (2).
6) Air-cool the coffee beans inside. The air that has flowed out to the air circulation section (5) flows through the air circulation pipe (30), the fan (31) and the air discharge tube (32) in that order, and is discharged outside the apparatus.

If it is desired to extend the air cooling time of the coffee beans, after the operation of the fan (31) is stopped, F
When the AN button (34c) is pressed, the fan (31) is operated again for a predetermined time to further cool the coffee beans.
To shorten the air cooling time of the coffee beans, press the FAN button (34c) while the fan (31) is operating to set the F value.
The operation of the AN is stopped, and the cooling of the coffee beans can be stopped.

Thereafter, the bean storage box (26) is taken out of the base (1), the coffee beans in the bean storage box (26) are transferred to another container or the like, and the drawer (2) is removed.
4) is pulled out to the front of the base (1), the chaff storage tray (23) is removed from the drawer (24), and only the chaff is discarded at a predetermined location.

In this embodiment, the chaff discharge hole (7a) is provided by forming the peripheral wall of the rotary drum (7) in a mesh shape, but the peripheral wall of the rotary drum (7) is formed. May be provided.

The horizontal stirring section (18a) and the inclined stirring section (18b) of the stirring member (18) are provided with a top plate section (18).
Although they are formed integrally through c), they may be separately formed.

Although the far-infrared radiation material (10) has a far-infrared radiation layer provided on its surface, the far-infrared radiation material (10) may be made entirely of a material that emits far-infrared radiation.

The far-infrared radiation layer of the far-infrared radiation material (10) may have a catalytic function of decomposing oils and fats scattered from coffee beans into carbon dioxide and water.

The far-infrared radiation material (10) is provided with the heat insulating material (37) on the back surface, but may be provided with the heat insulating material inside.

The far-infrared radiation material (10) is provided outside the rotary drum (7). Instead of the far-infrared radiation material (10), a reflecting material is used in the same manner as the far-infrared radiation material (10). It may be provided. According to this, since the reflecting material covers the upper half or more of the peripheral wall of the rotating drum (7), most of the heat radiated from the electric heater (9) is reflected by the reflecting material and the rotating drum (7) is reflected. ), The coffee beans in the rotating drum (7) can be heated while repeating the reflection. In addition, since the reflecting material does not cover the lowermost portion of the peripheral wall of the rotating drum (7) in the radial direction, the chaff of coffee beans generated during roasting is removed from the chaff discharge hole (7a) of the rotating drum (7). Can be drained down. In addition, this reflective material is provided with a heat insulating material on the back surface or inside like the far-infrared radiation material (10), and ensures that the heat radiated from the electric heater (9) escapes to the outside of the rotary drum (7). May be prevented.

Although the electric heater (9) is provided at the center of the rotary drum (7), it is provided at other portions of the rotary drum (7). It may be provided. However, in order to roast the coffee beans in the rotating drum (7) efficiently, it is desirable to provide the coffee beans in the center of the rotating drum (7).

Although the electric heater (9) is used as a heat source for roasting coffee beans, a gas burner may be used.

Although the roasting apparatus according to the present invention is applied to an apparatus for roasting coffee beans, it may be applied to an apparatus for roasting other objects to be roasted such as soybeans and barley.

[0054]

According to the first aspect of the present invention, during roasting, the roasted material contained in the rotary drum is stirred while being pushed in the rotational direction by the horizontal stirring member according to the rotation of the rotary drum. In addition, the material to be roasted is spread evenly in the length direction of the rotary drum, so that the material to be roasted can be roasted evenly and the escape of heat can be minimized.

Further, after roasting, the roasted material in the rotary drum is brought to one end of the rotary drum by the inclined stirring member according to the rotation of the rotary drum in the direction opposite to the roasting direction. Since it is discharged outside the rotating drum, the roasted material can be easily taken out from the rotating drum.

According to the second aspect of the present invention, the chaff of the roasted material generated during roasting can be easily discharged from the chaff discharge hole.

According to the third aspect of the present invention, the horizontal stirring member and the inclined stirring member can be easily provided on the inner peripheral surface of the rotary drum.

According to the present invention, the heat of the heat source is uniformly radiated toward the inner peripheral surface of the rotary drum.
The object to be roasted in the rotating drum can be efficiently roasted.

According to the fifth aspect of the present invention, the roasted material that flies along with the stirring hardly comes into direct contact with the heat source, and the roasted material can be prevented from being scorched. Further, the heat of the heat source can pass through the heat passage holes of the small-diameter rotary drum and reach the roasted object in the rotary drum.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of a roasting apparatus according to the present invention.

FIG. 2 is a cross-sectional view of the roasting apparatus of FIG. 1 taken along the line II.

FIG. 3 is a front view of the roasting device of FIG.

FIG. 4 is a perspective view showing a rotating state of a rotary drum.

FIG. 5 is a development view of a rotary drum.

FIG. 6 is a sectional view taken along line II-II of FIG. 5;

FIG. 7 is a block diagram of an electric system of the roasting device.

FIG. 8 is a perspective view showing a rotating state of a rotating drum in a conventional roasting apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Base 2 ... Roasting part 3 ... Chaff take-out part 4 ... Coffee bean take-out part 5 ... Air circulation part 7 ... Rotary drum 8 ... Inner drum 9 ...・ Electric heater 18 ・ ・ ・ Stirring member 23 ・ ・ ・ Chaff storage tray 26 ・ ・ ・ Bean storage box

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4B020 LB24 LG01 LP06 4B023 LG05 LP07 LT02 4B027 FB21 FQ02 4B061 AA01 AA02 AA09 AB02 AB06 AB07 BA09 BB11 BB17

Claims (5)

[Claims] 1. A rotatable drum arranged so that a rotating shaft extending in a longitudinal direction thereof is horizontal, and a heat source provided inside or outside the rotatable drum, and a rotatable drum accommodated in the rotatable drum is provided. A roasting device that roasts the decoction with the heat source while stirring the decoction according to the rotation of a rotary drum, wherein a horizontal stirring member extending in a rotation axis direction is provided on an inner peripheral surface of the rotation drum, and a tilting member is inclined with respect to the rotation axis direction. Inclined roasting members extending in the direction of rotation are provided, and at the time of roasting, the roasted material contained in the rotary drum is stirred while being extruded in the rotational direction by the horizontal stirring member according to the rotation of the rotary drum, while roasting. After roasting, the roasted material in the rotatable drum is discharged to the outside of the rotatable drum while being brought close to one end of the rotatable drum by the inclined stirring member according to the rotation of the rotatable drum in the direction opposite to the roasting. Roasting apparatus according to claim Rukoto. 2. The roasting apparatus according to claim 1, wherein the rotating drum has a plurality of chaff discharge holes formed in a peripheral wall thereof. 3. The roasting apparatus according to claim 1, wherein the horizontal stirring member and the inclined stirring member are formed integrally. 4. The roasting apparatus according to claim 1, wherein the heat source is provided at a central portion inside the rotary drum along a length direction. 5. The roasting apparatus according to claim 4, wherein an inner drum having a plurality of heat passage holes in a peripheral wall is provided inside the rotary drum so as to cover the heat source.