JPH04304872A - Coffee bean-roasting and milling device - Google Patents

Abstract

PURPOSE:To provide a device comprising a roasting section and a mill section both having specific inner structures, capable of roasting in a roasting state corresponding to the taste of a drinker and of grinding the roasted coffee beans and capable of surely separating and removing bean shells peeled from the coffee beans during the roasting process. CONSTITUTION:In a device provided with a mill section 40 having a rotatable mill plate 44 and a fixed mill plate 45 in a mutually faced state in a mill chamber 42a in a casing 42, with a roasting section 10 having a stirring and carrying screw 12 rotatable on a transverse axis and the screw 12 comprising a central shaft 12a, a discontinuous helical blade 12b, discontinuous helical grooves 12c formed between the blades 12b and a lifting tool 12d, and further with an air blower 50 for blowing cooled air into the roasting container 11, the stirring blade 12b is rotated on the transverse axis to efficiently roast the coffee beans at the bottom in the roasting container 11, and the surface layer of the roasted coffee beans is dried with cooled air, simultaneously discharging the peeled coffee bean shells from the roasting container 11, thereby permitting to reduce the resistance of the rotation mill plate 44 and to efficiently discharge the ground coffee beans outside.

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to a coffee bean roasting mill device, and in particular, the present invention relates to a coffee bean roasting mill device, and in particular, it is capable of easily roasting and grinding roasted coffee beans to a roasted state that matches the taste of a drinker. The coffee beans can be easily sent to the mill section, the rotational resistance of the rotating mill plate in the mill section can be reduced, and the bean hulls (skin) that have been peeled off from the coffee beans during roasting can be reliably separated and removed. Related to coffee bean roasting mill equipment.

0002

BACKGROUND OF THE INVENTION In recent years, as people's tastes have become more sophisticated, coffee bean roasting mills for roasting and grinding coffee beans have become popular in ordinary households.

[0003] A conventional coffee bean roasting mill device is provided with a roasting section for roasting coffee beans and a mill section for grinding the roasted coffee beans. It is configured so that it can be ground by dropping it on the machine. In this case, the roasting section includes a roasting container, a heater arranged around the roasting container, and a stirring device arranged inside the roasting container, and the mill section includes a casing and a stirrer arranged inside the casing. The mill includes a mill chamber, a fixed mill plate disposed within the mill chamber, and a rotary mill plate rotatably provided in the mill chamber opposite to the fixed mill plate.

[0004] The above-mentioned roasting container is formed into a vertical axis cylindrical shape or a horizontal axis cylindrical shape corresponding to the direction of the rotation axis of the stirring device. In the case of a cylindrical shape, it has an outlet at the lower circumference for sending out the roasted coffee beans.

[0005] Furthermore, the above-mentioned stirring device is also used as a carrying-out device for sending the coffee beans in the roasting container to the outlet, and in the case of a stirring device that rotates around the vertical axis, there are It includes one or more stirring blades that protrude in the radial direction, and a motor that rotates the central shaft and the stirring blades in one direction.

On the other hand, in the case of an agitation device that rotates around a horizontal axis, the roasting container itself is supported rotatably and vertically, and the roasting container can be driven to rotate in the forward direction or tilted vertically. When roasting, the roasting container is tilted and the coffee beans in the roasting container are stirred and roasted while being moved in the direction away from the outlet.When taking out the coffee beans after roasting, the roasting container is placed upright. By operating the roasting container, the coffee beans in the roasting container are moved toward the outlet and the shutter for taking out the coffee beans is opened.

[0007]

However, in this conventional coffee bean roasting mill device, while the coffee beans are being roasted in the roasting container, the oil in the coffee beans oozes out onto the surface of the beans. This oil causes the bean husks (skin) attached to the surface of the beans to be sent directly to the mill, causing the coffee to become very bitter or lose its flavor, resulting in the coffee not being roasted to match the taste of the drinker. I found it difficult to roast and grind.

[0008] Furthermore, it has been found that as the coffee beans stick to each other, it becomes difficult to send the coffee beans to the outlet, and the rotational resistance of the rotating mill plate in the mill section increases significantly.

In particular, in the case of an agitation device that rotates around a horizontal axis, the roasting container itself is supported rotatably and vertically, and the roasting container can be driven to rotate in the forward direction or tilted vertically. When roasting, the roasting container is tilted and the coffee beans in the roasting container are stirred and roasted while being moved in the direction away from the outlet.When taking out the coffee beans after roasting, the roasting container is placed upright. The coffee bean roasting mill device is configured to move the coffee beans in the roasting container toward the delivery port and open the shutter for taking out the coffee beans by operating the coffee bean roasting mill, making the coffee bean roasting mill extremely complicated and costly. There were issues such as:

[0010] Therefore, as a result of repeated research using a coffee bean roasting mill device equipped with a cylindrical roasting container, the inventor of the present invention discovered that after stopping the heater, the roasting container was opened while stirring the coffee beans. By supplying cooling air inside the mill, the surface of the coffee beans can be dried, the stickiness on the surface of the coffee beans can be eliminated, and the coffee beans can be smoothly sent to the outlet. It was found that rotational resistance can be lowered.

Furthermore, in this case, the bean husk (skin) can be easily peeled off from the surface of the coffee beans and carried out of the roasting container on the cooling air, or the coffee bean skins can be removed through a suitable duct. It was also found that the disposal of skins becomes easier by collecting them in a collection container.

However, in this case, since the stirring blade rotates around the vertical axis, it is difficult for the coffee beans at the bottom of the roasting container to rise above a certain level, and the surface of the coffee beans at the bottom of the roasting container is difficult to dry. Therefore, there were some problems in removing the skin, making it easier to send out the coffee beans, and making it easier to grind the coffee beans.

The present invention has been made in view of the above-mentioned circumstances, and it makes it easy to roast and grind roasted coffee beans to a roasted state that matches the taste of the drinker. The coffee beans can be sent to the mill section quickly, reduce the rotational resistance of the rotating mill plate in the mill section, and can reliably separate and remove the bean husk (skin) that has been peeled off from the coffee beans during roasting. The purpose is to provide roasting mill equipment.

[0014]

[Means for Solving the Problems] In order to achieve the above object, the coffee bean roasting mill device of the present invention includes a roasting section for roasting coffee beans, and coffee beans roasted in the roasting section. In a coffee bean roasting mill device, the coffee bean roasting mill is provided with a mill section for grinding coffee beans, and a rotating mill plate and a fixed mill plate facing each other in a mill chamber in a casing of the mill section. A roasting container and a stirring/delivery screw arranged in the roasting container and rotating around a horizontal axis are provided, and the screw has a central shaft and a discontinuous spiral blade protruding from the central shaft. The present invention takes technical measures to include a discontinuous spiral groove formed between the discontinuous spiral blades, and a paddle plate that crosses at least a portion of the discontinuous spiral groove.

That is, the roasting section is provided with a roasting container having a cylindrical shape with a horizontal axis, and a stirring and delivery screw placed inside the roasting container and rotating around the horizontal axis. ,
a central axis; a discontinuous spiral blade protruding from the central axis;
It includes a discontinuous spiral groove formed between the discontinuous spiral blades, and a scraper that traverses at least a portion of the discontinuous spiral groove.

The screw may be configured to move the coffee beans in the direction of the horizontal axis within the roasting container while pushing them up along the peripheral wall of the roasting container;
A continuous spiral blade protruding from the central axis, a discontinuous spiral blade with a part of the blade missing, etc., with blades whose blade surface is inclined with respect to a plane that crosses the horizontal central axis at right angles. Although it is possible to have one, it is preferable to use a discontinuous spiral blade with a portion missing in order to prevent an increase in stirring resistance due to crowding of coffee beans.

[0017] Although not particularly limited, the screw may also be equipped with a stirring rod, stirring plate, etc. between the blades in order to more reliably push the coffee beans along the peripheral wall of the roasting container and increase stirring efficiency. It is preferable to include a raking tool.

[0018] Furthermore, in the present invention, a blower device is provided for supplying cooling air into the roasting container, and the space inside the roasting container is communicated with the mill chamber so that the cooling air supplied from the blower device to the inside of the roasting container is provided. It is also advantageous to have an arrangement in which the air flows out from the roasting vessel through the mill chamber to the outside.

That is, after roasting the coffee beans and stopping the heater, cooling air is supplied into the roasting container while stirring the coffee beans, thereby cooling the coffee beans and cleaning the surface of the coffee beans. This allows the coffee beans to be dried, eliminates stickiness on the surface of the coffee beans, allows the coffee beans to be sent smoothly to the outlet, and at the same time lowers the rotational resistance of the rotary mill plate.

[0020] In this case, the bean husks (skins) can be easily peeled off from the surface of the coffee beans and carried out of the roasting container on the cooling air, or the coffee bean skins can be removed through a suitable duct. Collecting the skin in a collection container makes it easier to dispose of the skin.

Moreover, in the present invention, since the stirring blade rotates around the horizontal axis, the coffee beans at the bottom of the roasting container are efficiently raised upwards, and the surface of the entire coffee bean is easily dried, so that the skin of the coffee bean is easily removed. This makes it easier to remove the coffee beans, feed the coffee beans, and grind them.

In this case, the cooling air supplied from the blower into the roasting container is configured to flow from the roasting container to the outside through between the rotating and fixed mill plates in the mill chamber, thereby improving the roasting process. The bean husks (skins) separated from the pulp are carried by this cooling air, pass from the roasting container through the falling path, between the rotating and fixed mill plates in the mill chamber, and are efficiently discharged to the outside.

Furthermore, in the present invention, the cooling air supplied from the blower into the roasting container is configured so that it flows out from the roasting container through between the rotating and fixed mill plates in the mill chamber. The reason described below is that a particle size setting device is provided in the mill section to displace the rotating mill plate between a peeling position that is separated from the fixed mill plate by a certain amount or more and a bean grinding position that is closer to the fixed mill plate than the peeling position. More desirable.

That is, by configuring the structure so that the cooling air supplied from the blower into the roasting container flows out from the roasting container through between the rotating and fixed mill plates in the mill chamber, the pulp is removed by roasting. The peeled bean shells are carried by this cooling air and are efficiently discharged outside from the roasting container through the falling passage and between the rotating and fixed mill plates in the mill chamber.

Furthermore, in the roasting container, the screw lifts the coffee beans along the inner circumferential surface of the roasting container and knocks them back, so that the coffee beans at the bottom of the roasting container are reliably lifted to the top. By being exposed to the cooling air, the bean husks (husks) are reliably removed by the cooling air, and the coffee beans become sticky.

Furthermore, by providing such a particle size setting device, it is possible to roast the coffee beans to a desired particle size after peeling and produce a coffee drink that meets the tastes of coffee drinkers. It is.

[0027] The above-mentioned blower device may be configured so as to be able to supply atmospheric air into the roasting container, and may include, for example, a blower fan, a motor that drives the blower fan, and a wind generated by the blower fan that guides the air into the roasting container. Consists of air hoses, ducts, etc.

Further, in the present invention, it is preferable for the reasons described below that a smoke remover, a deodorizer, or a smoke/deodorizer be disposed in the falling passage that communicates the space inside the roasting container with the mill chamber.

[0029] In other words, if a smoke remover, deodorizer, or smoke/deodorizer is placed in the fall passage in this way, no smoke will be generated, so the room will not get soot, and the activation of the fire alarm in the room will be prevented. This means that there is no odor trapped inside the room.

[0030] Examples of the smoke and deodorizer used in the present invention include the following. It is preferable to use an alkali metal silicate or metal phosphate for the base material such as a ceramic material.

[0031] In the present invention, it is desirable that the base material such as a ceramic material contain a smoke-removing/deodorizing active substance that activates the smoke-removing/deodorizing (catalytic) action of the above-mentioned smoke-removing/deodorizing agent.

[0032] This smoke removal/deodorization active substance includes Na2
Group I and Group II of the periodic table, such as O, K2O, CaO, MgO, CuO, Ag2O, alumina, zirconium oxide, etc.
A group III or group IV oxide, or a compound containing these oxides, (Mc1)x(Mc2)y(O)
Those represented by z etc. are used. However, Mc1 is a group I, II or III element, and Mc2 is a group III element such as aluminum (Al), carbon (C), silicon (Si
), titanium (Ti), zirconium (Zr), and other group IV elements, and phosphorus (P), vanadium (V) and other group V elements, O is oxygen, and x, y, and z are each integers. .

In the present invention, the above-mentioned smoke and deodorizer may further contain a platinum group element.

In the present invention, the ratio of the smoke/deodorizer to the base material is 0.5 parts by weight of the smoke/deodorizer per 100 parts by weight of the base material.
It is preferable that the amount is in the range of ~30 parts by weight; if the smoke and deodorizing agent is less than 0.5 parts by weight, the smoke and deodorizing effect will be poor, while if it exceeds 30 parts by weight, there will be a limit to the smoke and deodorizing effect. This is not desirable from an economic point of view. Therefore, from these considerations, it is particularly desirable that the amount of smoke removal/deodorizing agent be in the range of 1 to 20 parts by weight per 100 parts by weight of the base material.

[0035] The base material containing the smoke removal/deodorizing agent used in the present invention is spread on the inner surface of the falling passage that communicates the space inside the roasting container with the mill chamber.

[0036]

[Operation] In the coffee bean roasting mill device of the present invention,
With the above configuration, by rotating the screw in the normal rotation direction, the coffee beans in the roasting container are stirred while being sent to one end side of the roasting container.

That is, the roasting section includes a horizontally cylindrical roasting container,
A stirring/delivery screw is disposed in the roasting container and rotates around a horizontal axis, and the screw has a central axis, a discontinuous spiral blade protruding from the central axis, and a discontinuous screw. It includes a discontinuous helical groove formed between the helical blades and a raking tool that traverses at least a portion of the discontinuous helical groove.

In this case, the screw moves and stirs the coffee beans in the direction of the horizontal axis within the roasting container while pushing them up along the peripheral wall of the roasting container.

By simultaneously operating the heater,
The coffee beans will be roasted evenly. and,
When roasting is completed, the particle size setting device is operated to position the rotary mill plate at the peeling position and the blower device is activated. As a result, the heated coffee beans are cooled by the atmosphere introduced into the roasting container, and the oil that has oozed out on the surface of the coffee beans is dried.

Furthermore, the cooling air supplied from the blower into the roasting container is discharged from the roasting container to the outside through a falling passage and through the mill chamber.

In this case, the cooling air supplied from the blower into the roasting container is configured to pass from the roasting container through the falling passage, between the rotating and fixed mill plates in the mill chamber, and be discharged to the outside. Also good.

With this structure, the bean shell (skin) separated from the pulp during roasting is carried by this cooling air, passes from the roasting container through the falling passage, and passes between the rotating and fixed mill plates in the mill chamber. It is discharged to the outside.

Furthermore, in the roasting container, the screw lifts the coffee beans along the inner circumferential surface of the roasting container and knocks them back, so that the coffee beans at the bottom of the roasting container are reliably lifted to the top. Exposure to cooling air ensures that the bean husk (skin) is removed by the cooling air, and the oil on the surface of the coffee beans is dried.

[0044] When the coffee beans are finished roasting,
By rotating the screw in the reverse direction, the coffee beans in the roasting container are sent to the outlet side of the roasting container, and fall from the outlet through the falling passage into the mill chamber.

[0045] In this case, since the coffee beans are cooled, they lose their stickiness, making it easier to send the roasted coffee beans to the mill section, and reducing the rotational resistance of the rotating mill plate in the mill section. Can be done.

[0046] By rotating the screw in the forward and reverse directions in this manner, the coffee beans can be roasted or taken out very easily and reliably, making it easy to handle.

[0047]

[Embodiments] Hereinafter, embodiments of the present invention will be described in detail based on the drawings, but the present invention is not limited thereto. A coffee bean roasting mill device according to an embodiment of the present invention, as shown in FIG.
A mill section 40 is assembled on the left side of the drive mechanism section 30, and in this case, a cooling blower device 50 is provided.

[0048] On the front side of the operation console 20, there is a timer setting dial 21 for setting the roasting time, a temperature setting dial 22 for setting the roasting temperature, and a dial for controlling the forward rotation of the spiral blade 12, which will be described later. A main switch 23 for on/off operation and a take-out switch 24 for turning on/off the reverse operation of the spiral blade 12 are provided, and inside the operation console 20 there is a control circuit connected to these and a blower (fan) of the blower device 50. and is provided. In this case, the power supply may be configured to be turned on and off at a desired time by timer reservation.

The drive mechanism section 30 is interlocked with a casing 31, a horizontal motor 32 housed in the casing 31, and an output shaft 32a of the motor 32 via a gear device 33, and has a vertical axis. The first intermediate transmission shaft 3 rotates around the
4.

The roasting section 10 includes a horizontally cylindrical roasting container 11, a stirring and unloading screw 12 rotatably housed in the roasting container 11, and an intermediate transmission shaft of the drive mechanism section 30. Transmission mechanism part 13 that interlocks the screw 12 with 34
and a heater (not shown).

The roasting container 11 has a cylindrical shape with both ends closed and the other end shaped like a funnel. Further, this roasting container 11 has an input port 11a at the top for charging coffee beans, a transparent lid 11b for opening and closing the input port 11a, and a connection port 11c for connecting the air hose 51 of the blower device 50. A delivery port 11d for delivering coffee beans is provided on the lower peripheral surface of the other end.

The screw 12 is made by die-casting aluminum, for example, and has a drive shaft 13a rotatably supported at one end of the roasting container 11, and a drive shaft 13a rotatably supported at the other end of the roasting container 11. A central shaft 12a supported at both ends by a receiving shaft 11e, a spiral blade 12b protruding around the central shaft 12a, and a spiral groove 1 formed between the spiral blades 12b.
2c.

As shown in FIG. 1, the spiral blade 12b is formed in such a shape that at least a portion of the outer peripheral edge is missing except for one circumferential portion on the delivery destination side. Here, the shape in which a part is missing refers to a shape in which a part of the outer peripheral edge of the spiral blade 12b is missing in a semicircle, U-shape, V-shape, etc., such as a fan-shape or a half-moon shape centered on the central axis 12a. Examples include: In this example, as shown in FIG.
The center axis 1 of the spiral blade 12b is
It is formed into a half-moon shape centered on 2a.

[0054] Also, the position of this missing part is the screw 1
However, in this embodiment, the missing portions are overlapped in the axial direction of the screw 12 so that the coffee beans concentrated at the right end in the roasting container 11 can easily return to the left side. It has been done.

[0055] Furthermore, the spiral groove 12c of the screw 12
A raking tool 12d fixed to the central shaft 12a or the spiral blade 12b is provided inside.

The scraping tool 12d may be provided so as to cross at least a portion of the spiral groove 12c, for example, the outer half of the spiral groove 12c, one half of the spiral groove 12c in the axial direction,
Alternatively, it is also possible to provide it so as to traverse the entire area.

However, in this embodiment, in order to increase the stirring efficiency, a scraper 12d is provided so as to cross about half of the spiral groove 12c on the axis side, as shown in FIGS. 1 and 2.

Further, only one scraping tool 12d may be provided in the flow direction of the spiral groove 12c, but in this embodiment, in order to improve the stirring efficiency, one rake tool 12d is provided every 360° in the flow direction of the spiral groove 12c. A raking tool 12d is provided for each. In other words,
A raking tool 12d is provided on the central shaft 12a in a straight line in the axial direction.

The thickness of each of the scraping tools 12d is not particularly limited as long as it has the mechanical strength required for stirring coffee beans, and here, it is formed to the minimum thickness that can be cast. There is.

The transmission mechanism section 13 may be configured so that the screw 12 is interlocked with the intermediate transmission shaft 34 of the drive mechanism section 30, and may be, for example, a belt type transmission mechanism, a gear type transmission mechanism, or a chain type transmission mechanism. A known transmission mechanism such as a transmission mechanism can be employed. In this example, FIG.
As shown in the figure, the transmission mechanism section 13 is constructed using a chain type transmission mechanism that has high transmission efficiency and can be configured easily and inexpensively, and a bevel gear type transmission mechanism that can change the direction of the rotation axis within a narrow space. It consists of

That is, the drive shaft 13a, the driven sprocket 13b fixed to the right end of the drive shaft 13a, and the roasting container 1
1, which is rotatably supported around the left and right axis on the lower side of 1.
A driving sprocket 13d fixed to the right end of the intermediate transmission shaft 13c, and both sprockets 13b and sprockets 13d.
A chain type transmission mechanism consisting of a chain 13e wrapped around the entire length, and a pair of bevel gears 13f and 13g fixed to the left end of the second intermediate transmission shaft 13c and the upper end of the first intermediate transmission shaft 34 of the drive mechanism section 30. The transmission mechanism section 13 is constituted by the bevel gear type transmission mechanism.

Although not particularly limited, the gear device 33 employs a worm gear type transmission mechanism that can change the direction of the rotation axis in a narrow space and has a speed reduction function. That is, the drive shaft 41 of the mill section 40 is inserted into the output shaft 32a of the motor 32 in a movable and interlocking manner, and the worm 33a is fitted onto the drive shaft 41.
and a worm wheel 33b fitted onto the lower part of the first intermediate transmission shaft 34, forming the gear device 33.

The mill section 40 includes the drive shaft 41, a casing 42 that rotatably supports the drive shaft 41, and a roasting container 1.
a duct 43 that guides the cooling air or coffee beans sent out from the outlet 11d of the casing 42 into the casing 42; a rotary mill plate 44 that rotates in conjunction with the drive shaft 41 within the casing 42; It includes a fixed mill plate 45 fixedly installed opposite to the plate 44, and a particle size setting device 46 for moving the drive shaft 41 and the rotary mill plate 44 back and forth.

A smoke/deodorizing agent (smoking/deodorizing catalyst) 47 is disposed in the falling passage of the duct 43 as required. This smoke removal/deodorizing agent (smoking/deodorization catalyst) 47 may be anything that has the function of sorbing or adsorbing the smoke generated during roasting and removing the odor generated during roasting.

[0065] It is also possible to use a smoke remover that has the function of adsorbing or adsorbing the smoke generated during roasting together with a deodorizer that has the function of removing the odor generated during roasting, or to use only one of them as described above. It is also possible to arrange it within the fall passage of the duct 43.

That is, if a smoke remover, a deodorizer, or a smoke remover/deodorizer is placed in the fall passage of the duct 43 in this way, no smoke is generated, so the room does not get soot, and the indoor fire alarm This prevents the system from operating or causing odors to build up inside the room.

[0067] Examples of the smoke removal/deodorizing agent used in the present invention include the following. It is preferable to use an alkali metal silicate or metal phosphate for the base material such as a ceramic material.

[0068] In the present invention, it is desirable that the base material such as a ceramic material contain a smoke-removing/deodorizing active substance that activates the smoke-removing/deodorizing (catalytic) action of the above-mentioned smoke-removing/deodorizing agent.

[0069] This active substance for smoke removal and deodorization includes Na2
Group I and Group II of the periodic table, such as O, K2O, CaO, MgO, CuO, Ag2O, alumina, zirconium oxide, etc.
A group III or group IV oxide, or a compound containing these oxides, (Mc1)x(Mc2)y(O)
Those represented by z etc. are used. However, Mc1 is a group I, II or III element, and Mc2 is a group III element such as aluminum (Al), carbon (C), silicon (Si
), titanium (Ti), zirconium (Zr), and other group IV elements, and phosphorus (P), vanadium (V) and other group V elements, O is oxygen, and x, y, and z are each integers. .

In the present invention, the above-mentioned smoke and deodorizer may further contain a platinum group element.

In the present invention, the ratio of the smoke remover/deodorizer to the base material is 0.5 parts by weight of the smoke remover/deodorizer per 100 parts by weight of the base material.
It is preferable that the amount is in the range of ~30 parts by weight; if the smoke and deodorizing agent is less than 0.5 parts by weight, the smoke and deodorizing effect will be poor, while if it exceeds 30 parts by weight, there will be a limit to the smoke and deodorizing effect. This is not desirable from an economic point of view. Therefore, from these considerations, it is particularly desirable that the amount of smoke removal/deodorizing agent be in the range of 1 to 20 parts by weight per 100 parts by weight of the base material.

[0072] The base material containing the smoke removal/deodorizing agent used in the present invention is spread on the inner surface of the falling passage that communicates the space inside the roasting container 11 with the mill chamber 42a.

The casing 42 has a mill chamber 42a housing a rotary mill plate 44 and a fixed mill plate 45, and a mill chamber 42a.
The receiving chamber 42b is provided on the right side of the duct 2a and is located below the delivery port 11d and the duct 43. The upper part of this receiving chamber 42b is communicated with the outlet 11d via a duct 43. Further, the lower part of the receiving chamber 42b is communicated with the space between the rotary and fixed mill plates 44 and 45 in the mill chamber 42a through a through hole 45a provided in the center of the fixed mill plate 45. Furthermore,
An outlet 42c opening downward of the casing 42 is formed at the bottom of the mill chamber 42a. This outlet 42c is opened and closed by a removable lid 48.

The drive device 41 has a collar portion 41a on the left side that supports the rotary mill plate 44, and a receiving chamber 42.
A screw 41b for feeding coffee beans from the receiving chamber 42b to the mill chamber 42a is formed in the portion of the drive shaft 41 from b to the surface of the fixed mill plate 45 facing the rotary mill.

The particle size setting device 46 is screwed into the left end of the casing 42 so that it can be screwed back and forth in the left and right direction, and is connected to the drive shaft 4.
1, a spring 46b inserted between the output shaft 32a of the motor 32 and the drive shaft 41 and biasing the drive shaft 41 leftward, and a spring 46b that supports the left end of the motor 32 in a rotatable manner; In addition to regulating the area, the bearing 46a is set at a peeling position at one end of its rotational stroke, and three bean grinding positions on the other end side, namely, a fine grinding position at the other end, and a peeling position at the fine grinding position. It is provided with a moderation mechanism 46c that can be locked in a total of four positions, a medium-grinding position and a rough-grinding position, and a dial 46d that rotates the bearing 46a.

The cooling blower device 50 includes a blower (including a fan and a motor for driving the fan) housed in the operation console 20, and a cooling air generated by the blower that is sent to the roasting container 11.
and an air hose 51 that leads to the upper part of the air hose.

A control circuit built into the operation console 20 stores control programs for the motor 32, the heater, and the fan of the blower 50.

[0078] Although the content of this control program is not particularly limited, here, it is configured such that by pressing the main switch 23, coffee beans are automatically roasted, the cooling after roasting, and the bean husks are discharged. Also, by pressing the take-out switch 24, the mill section 40 is removed from the roasting container 11.
Take out the coffee beans, grind them to the desired particle size, and
It is configured to be dropped from 2c.

That is, after putting raw coffee beans into the roasting container 11 through the inlet 11a, the timer setting dial 2
Set the roasting time with 1 and turn the temperature setting dial 2.
Set the roasting temperature in step 2. After this, the main switch 23
By pressing , normal rotation of the spiral blade 12 is started,
At the same time, or after a certain period of time, the heater is activated to start roasting the coffee beans. During roasting, the heater is automatically controlled so that the temperature inside the roasting container 11 reaches the set temperature, and when the set roasting time has elapsed, the operation of the heater is stopped and the roasting ends.

Even after the heater is stopped, the spiral blade 12 continues to rotate normally, and the blower 50 is started at the same time as the heater is stopped, and the roasted coffee beans are cooled. The cooling air blown into the roasting container 11 from the blower 50 flows out from the outlet 42c to the lower part of the mill section 40 through the outlet 11d, the duct 43, the receiving chamber 42b, and the mill chamber 42a in this order. The husks of coffee beans that fly up into the roasting container 11 due to the rotation of the spiral blade 12 move toward the outlet 42c along with the flow of this cooling air. Therefore, before stopping the heater, for example, before pressing the main switch 23 for the first time, the dial 46d of the particle size setting device 45 is placed in the peeling position, and the distance between the rotary mill plate 44 and the fixed mill plate 45 is made sufficiently large. If this is done, the coffee bean skins will smoothly flow to the outlet 42c and be discharged from the outlet 42c. The discharged coffee bean skins may be collected in a suitable container placed below the outlet 42c.

After the coffee beans are cooled and the bean husks are continuously discharged for a certain period of time in this manner, the operation of the spiral blade 12 and the blower device 50 is stopped.

After this, the dial 46 of the particle size setting device 46
d in the coarse grinding position, medium grinding position, or fine grinding position, place a container for collecting coffee in place of the container for collecting coffee bean skins below the outlet 42c, and turn the take-out switch 24. When pressed, reverse rotation of the spiral blade 12 is started. As a result, the coffee beans are sent from the roasting section 10 to the mill section 40, and the coffee beans that have been dropped into the receiving chamber 42b of the mill section 40 are sent between the rotating and fixed mill plates 44 and 45, and are set. The powder is ground to a fine particle size and falls downward from the outlet 42c. When a predetermined period of time has elapsed after pressing the take-out switch 24, the spiral blade 1
2 is automatically stopped.

[0083] In this coffee bean roasting mill device,
During roasting, the spiral blades 12 are rotated in the normal direction, so the coffee beans move from left to right inside the roasting container 11 and concentrate at the right end of the roasting container 11. 12 is formed in a half-moon shape centered on the central axis 12a, except for one circumference on the destination side, so that the coffee beans pass through this missing portion and move to the right. You can return to the left from here. As a result, there is no risk that the coffee beans will crowd at the right end portion of the roasting container 11, reducing or stopping the rotation of the spiral blade 12, and it is possible to prevent a drop in stirring efficiency due to the crowding of coffee beans.

[0084] Also, a scraping tool 12d provided on the spiral blade 12
Since the coffee beans are stirred up and thrown back from the lower half to the upper half in the roasting container 11, the coffee beans are actively stirred and roasted uniformly. Therefore, by simply setting the roasting time and roasting temperature appropriately, roasting that can produce any flavor that matches the taste of the drinker can be easily performed.

Further, smoke and odor generated during roasting are absorbed or adsorbed by a smoke/deodorizing agent 47 provided in the duct 43 and removed.

[0086] After roasting, the coffee beans are cooled while being stirred, thereby drying the oil that has oozed out onto the surface of the coffee beans during roasting. Here, the roasting container 11 is formed into a cylindrical shape with a horizontal axis, and a screw 1 rotates around the horizontal axis.
Since the coffee beans are stirred in step 2, the coffee beans at the inner bottom of the roasting container 11 are sufficiently lifted upward by the screw 12 and exposed to the cooling air. Therefore, roasting container 1
The coffee beans in the container are cooled evenly and reliably, and the oil on their surface is reliably dried. As a result, the coffee beans can be easily sent out from the roasting container 11, and the coffee beans become less sticky, so that the coffee beans can be easily delivered to the mill section 40.
This reduces the load when grinding coffee beans, allowing you to grind a large amount of coffee beans in a short amount of time.

[0087] Furthermore, the bean shell (skin) containing a large amount of bitter components is reliably separated from the pulp by the cooling air, and the roasting container 11
The bean husks (skins) can be discharged to the outside through between the rotating and fixed mill plates 44 and 45 in the mill chamber 42a, and the flavor of the coffee can be enhanced by discharging the bean hulls (skin) on the cooling air. Can be done.

In the above embodiment, the motor 32, the heater and the blower 50 are automatically controlled by the control circuit, but the motor 32, the heater and the blower 50 are controlled by manually operated switches. It is also possible to configure it so that it can be individually turned on and off.

[0089]

As described above, the coffee bean roasting mill device of the present invention has the above configuration, and by rotating the screw in the normal rotation direction, the coffee beans in the roasting container are It is stirred while being sent to one end.

In this case, the screw moves and stirs the coffee beans in the direction of the horizontal axis within the roasting container while pushing them up along the peripheral wall of the roasting container.

[0091] By operating the heater at the same time,
The coffee beans will be roasted evenly. and,
When roasting is completed, the particle size setting device is operated to position the rotary mill plate at the peeling position and the blower device is activated. As a result, the heated coffee beans are cooled by the atmosphere introduced into the roasting container, and the oil that has oozed out on the surface of the coffee beans is dried.

[0092] Cooling air supplied from the blower into the roasting container is discharged from the roasting container to the outside through a falling passage and through the mill chamber.

[0093] In this case, in the roasting container, the screw lifts the coffee beans along the inner peripheral surface of the roasting container and knocks them back, so that the coffee beans at the bottom of the roasting container are reliably lifted to the top. The coffee beans are exposed to cooling air to ensure that the bean husks are removed by the cooling air and the oil on the surface of the coffee beans is dried.

[0094] When the coffee beans are finished roasting,
By rotating the screw in the reverse direction, the coffee beans in the roasting container are sent to the outlet side of the roasting container, and fall from the outlet through the falling passage into the mill chamber.

[0095] In this case, since the coffee beans have been cooled, they are no longer sticky, making it easier to feed the roasted coffee beans to the mill section, and reducing the rotational resistance of the rotating mill plate in the mill section. Can be done.

[0096] By rotating the screw in the forward and reverse directions in this manner, coffee beans can be roasted or taken out very easily and reliably, so that it is easy to handle, and the structure is simple and extremely economical.

[0097]

[Brief explanation of drawings]

FIG. 1 is a partially cutaway front view of a coffee bean roasting mill apparatus according to an embodiment of the present invention.

FIG. 2 is a longitudinal cross-sectional view of a spiral blade of the roasting section.

[0098]

[Explanation of symbols]

10 Roasting department 11 Roasting container 12 Screw 12a Center axis 12b Discontinuous spiral blade 12c Discontinuous spiral groove 12d raking tool 40 Mill part 42 Casing 42a Mill room 43 Falling passage 44 Rotating mill plate 45 Fixed mill plate 46 Particle size setting device 47　Smoke removal/deodorizer 50　Blower device

Claims (5)

[Claims] Claim 1: A roasting section (10) for roasting coffee beans;
A mill section (40) for grinding coffee beans roasted in the roasting section (10), and a rotary mill plate (44) facing each other in a mill chamber (42a) in a casing (42) of the mill section (40).
) and a fixed mill plate (45), the roasting section (10) includes a cylindrical roasting container (11) with a horizontal axis, and a rotor inside the roasting container (11). A stirring and delivery screw (12
), and the screw (12) is connected to the central axis (1
2a), a discontinuous helical blade (12b) protruding from the central axis (12a), a discontinuous helical groove (12c) formed between the discontinuous helical blade (12b), and the discontinuous helical groove. (12c).
d) A coffee bean roasting mill device comprising: 2. A blower device (50) for supplying cooling air into the roasting container (11), the blower device (50) communicating the space inside the roasting container (11) with the mill chamber (42a). The cooling air supplied into the roasting container (11) from the roasting container (11)
The coffee bean roasting mill device according to claim 1, wherein the coffee beans are configured to flow from the mill chamber (42a) to the outside. 3. Cooling air supplied from the blower device (50) into the roasting container (11) flows from the roasting container (11) into the mill chamber (4).
Claim 2, wherein the mill plate is configured to flow out through between the rotating and fixed mill plates (44) and (45) in 2a).
The coffee bean roasting mill apparatus described in . 4. Cooling air supplied from the blower device (50) into the roasting container (11) flows from the roasting container (11) into the mill chamber (4).
2a) so that it flows outside through between the rotating and fixed mill plates (44) and (45), while the mill part (
40) a particle size setting device for displacing the rotating mill plate (44) between a peeling position that is separated from the fixed mill plate (45) by a certain amount or more and a bean grinding position that is closer to the fixed mill plate (45) than the peeling position; The coffee bean roasting mill device according to any one of claims 1 to 3, further comprising (46). [Claim 5] The space inside the roasting container (11) is divided into a mill chamber (42).
The coffee bean roasting mill apparatus according to any one of claims 1 to 4, wherein a smoke remover, a deodorizer, or a smoke/deodorizer (47) is disposed in the falling passageway (43) communicating with the coffee bean roasting mill device. 0001