JPH03219837A - Method for roasting and pulverizing coffee bean and apparatus therefor - Google Patents

Abstract

PURPOSE:To readout obtain a coffee raw material capable of providing a coffee liquid excellent in flavor by removing skins while roasting raw coffee beans and stocking the resultant roasted beans or subsequently pulverizing the beans and stocking the prepared coffee powder. CONSTITUTION:Raw coffee beans are filled in a roasting vessel 21 detachably provided in the upper part of a body 1 of a roasting and pulverizing device for the coffee beans and roasted by blowing hot air (H) from a hot air producing part 12 while being stirred with stirring blades 3. Peeled skins of the beans are simultaneously dropped into a chaff box 18. The roasted coffee beans are then introduced into a bean stocker 43 by changing over a shutter 31 and stocked therein or introduced into a mill case 26 and pulverized. The prepared pulverized coffee powder is subsequently dropped into a powder stocker 42 and stocked therein. When a coffee liquid is extracted, a required amount of the coffee powder is taken out and extracted.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention involves roasting green beans, pulverizing the roasted beans, and stocking the roasted beans or coffee powder. The present invention relates to a method of roasting and grinding coffee beans, which can be immediately used for the next process, and an apparatus therefor.

(Conventional technology) In recent years, coffee makers have become increasingly popular in general households, but they are equipped with a grinding section, also known as a coffee mill, that grinds roasted coffee beans purchased from outside, and a grinding section that grinds coffee liquid from the ground coffee powder. A coffee maker with an integrated filtration section that extracts and separates the extract from the residue is also used, and the coffee maker is a fully automatic mill-integrated coffee maker in which ground coffee powder is continuously introduced into the filtration section. Used many times.

However, in the above case, the process of roasting green coffee beans is not included, and the roasted coffee beans must be purchased or the roasting process must be performed separately at home. There is a risk that the aromatic coffee beans will lose their flavor while being introduced into the grinding section.

Therefore, it is ideal and time-saving to carry out the entire process of coffee making from the above-mentioned process of roasting the green beans and crushing the roasted beans to extracting the coffee liquid in a continuous operation. This is why it is being considered.

However, as mentioned above, it is difficult to perform the roasting process, the grinding process, and the filtration process for extracting coffee liquid in a series of operations in a continuous manner in terms of the economical balance of throughput in each process. Furthermore, this method is not practical because it cannot immediately respond to changes in the required amount of coffee liquid to be extracted.

As a result, the appropriate amount of roasted beans or coffee powder obtained by crushing roasted beans is stored in a sudock, and dispensed according to the required amount when extracting coffee liquid. It is increasingly desired to use the

In other words, the green coffee beans are roasted or the roasted beans are subsequently ground, stored in each state, and when coffee liquor is required, it is immediately poured according to the required amount of coffee liquor. Although there is a desire for a system that integrates the roasting and grinding processes for coffee beans, there is currently no such system available.

[Problems to be Solved by the Invention] The present invention was made in response to the above-mentioned conventional demands, and integrates each process from roasting green coffee beans to crushing roasted beans. In addition, by making it possible to stock either roasted beans or ground coffee powder, it is possible to quickly and flexibly adjust the required amount of coffee liquid without losing the original flavor of coffee. The object of the present invention is to provide a method for roasting and grinding coffee beans and an apparatus for the same.

[Means to solve the problem]

As a means for solving the above problems, the method of roasting and grinding coffee beans of the present invention involves removing the skins of green coffee beans while roasting them and stocking the roasted beans. , or the above-mentioned roasted beans are subsequently ground and the ground coffee powder is stocked.

In addition, as a means to which the above method can be applied, the coffee bean roasting and grinding apparatus of the present invention includes a roasting section that removes the skin of the beans while roasting the green beans, and a roasting section that removes the skin from the roasting section. The roasting section includes a bean stocker for removing and storing roasted beans, a grinding section for grinding the roasted beans from the roasting section, and a powder stocker for taking out and stocking the coffee powder from the grinding section. It is constructed by disposing a switching device that selectively introduces the roasted beans from the above into the bean stocker or the grinding section.

As a result, in this coffee bean roasting and grinding device, the roasting section, the grinding section, and the stockers for roasted beans and coffee powder are integrated into one main body of the device. Regardless of the amount of coffee liquid to be extracted, the optimal processing amount of green coffee beans is roasted and the roasted beans are crushed, and the condition of the roasted beans or coffee powder is They are varnished and docked in each stocker, and when coffee liquid is extracted, they are immediately used according to the required amount of coffee liquid, making practical coffee making possible.

〔Example〕

The present invention will be described in detail below with reference to the drawings.
The figure is a front sectional view of an embodiment of the apparatus to which the coffee bean roasting and grinding method of the present invention is applied, FIG. 1 is an enlarged perspective view of the filter shown in FIG. 1, FIG. 4 is an exploded perspective view of essential parts of the roasting section shown in FIG. 1, and FIG. 5 is a front view of a manual dial for operating the switching shutter shown in FIG.

First, as shown in Figure 1, this device consists of a roasting section A that removes the skin of green coffee beans while roasting them;
It consists of a crushing part B that introduces roasted beans and crushes them, and these parts are integrated and arranged on the main body 1 of the device.

Therefore, to explain the details of each of the above parts in order, first, as shown in Fig. 1, the roasting part A is removably installed at a high position in the main body 1 of the apparatus.The transparent heat-resistant glass shown in the exploded view of Fig. A roasting container 21 is fixed with a nut 23 via a washer 25, a wave washer 27, etc. to a rotating shaft 28 inclined downward to the right in the figure, and this rotating shaft 28 is connected to the heat shielding coil 2 of FIG. By being rotated by a drive motor 34 via the stirring blade 3, the stirring blade 3 rotates around the rotation axis together with the stirring blade 3 rotated at an appropriate angle to perform roasting.

This stirring blade 3 is provided with a large number of holes 3A, and suction is drawn from a turbo fan 6 rotated by a motor 5'.
Hot air H heated by the heater 7 is blown diagonally downward into the roasting container 21 as shown by the arrow, and the green coffee beans previously supplied into the roasting container 21 are blown by this hot air H. It is heated while being stirred by the stirring blade 3, and the hot air H passes through the many holes 3A of the stirring blade 3, resulting in uniform roasting.

In addition, the skin of the green beans in the roasting container 21 that has been roasted while being stirred is peeled off, and the waste heat, indicated by the arrow He used to heat the green beans, is released from the holes of the chaff filter 29 in FIG. It falls and accumulates in chaff box 18, but chaff box 1
The chaff in the container 8, that is, the bean skin, can be disposed of by removing the chaff box 18 as appropriate.

Next, the side where the rotary wheel 28 of the roasting container 21 is fixed has a wall provided with fan-shaped holes, and as shown in FIG. is provided so that it can rotate together with the roasting container 21, and the fan-shaped hole is closed by this shutter 22 during roasting, but after roasting is completed, this shutter 2
The shutter 22 is locked by fitting the tip of the stopper rod 11 into the recess 22A provided on the outer periphery of the shutter 22.
The roasted beans pass through the fan-shaped hole and naturally fall into the crushing section B from the introduction path 8 through the introduction port 3o in FIG.
In the switching state shown in FIG. 1, the switching shutter 31 falls into the mill case 26 containing the rotating cutter 24 due to the height difference.

Note that the air flow path sucked by the heater 7 heater fan 6 for generating the hot air H supplied to the roasting section A is the first
Air is taken in from the air population 9 as shown by the arrow a so as to pass around the drive motor 34 of the rotating shaft 28 of the roasting container 21 in the figure, so this taken in air a drives the drive motor 34 and the turbo fan 6. The motor 5 for this purpose is air-cooled.

Further, the drive motor 34 is connected to the heat shield plate 10 on the roasting section A side.
It is designed to be heat shielded.

In the above roasting section A, after filling the roasting container 21 with an appropriate amount of raw coffee beans and setting the roasting container 21 in a predetermined position, the main switch of the coffee maker is started. Therefore, when the drive motor 34 is driven, the motor 5 of the turbo fan 6 is also driven, and the heater 7 is also energized, so that the hot air H from the hot air generating section 12 is
The coffee beans are blown diagonally downward toward the lower part of the rotating roasting container 21 where the coffee beans are stored, and roasting is performed.

In this state, the bean skin peeled off from the coffee beans, i.e.
The chaff falls into the chaff box 18 from the hole of the chaff filter 29 together with the exhaust heat indicated by the arrow He, while the exhaust heat He is discharged from the exhaust heat release port 13.

During this time, the roasted state of the coffee beans can be easily observed through the transparent heat-resistant glass outer cylinder of the roasting container 21.

When the above-mentioned roasting operation is completed, a timer or the like is activated, and cold air is introduced into the roasting container 21 for a suitable period of time with the heater 7 de-energized to cool the coffee beans.
The solenoid 14 operates to push up the stopper rod 11, and its tip fits into the recess 22A of the shutter 22 to stop the rotation of the shutter 22, so that roasted coffee beans can pass through the fan-shaped hole provided in the shutter 22. It falls from the introduction path 8 to the introduction port 30 of the switching shutter 31 due to the natural fall due to the difference in height.

Next, the cutter 24 in the mill case 26 is placed in the state shown in FIG.
is rotated by a motor (not shown) to continue pulverizing the roasted beans, and the pulverized coffee powder passes through the hole 37A of the filter 37 shown in FIG. It falls and accumulates in the freely adjustable powder stocker 42,
Stocked.

As described above, a circuit is provided in which the roasting process of removing the skin of green beans while roasting them and the crushing process of introducing roasted beans and pulverizing them are performed in continuous operation. Accordingly, this apparatus shown in FIG.
The operation of pulverizing the coffee powder and storing it as coffee powder in the powder stocker 42 in a removable manner is easily performed.

Next, when the roasted beans from the roasting section A of this apparatus fall from the introduction path 8 into the introduction port 30 to the switching shutter 31, when the switching shutter 31 is switched as shown in FIG. The roasted beans are introduced into a removable bean stocker 43, where they are piled up and stored.

That is, the switching shutter 31 described above is a switching device that selectively introduces roasted beans from the roasting section A into either the bean stocker 43 or the crushing section B, and in this embodiment, the switching shutter 31 is a switching device shown in FIG. By rotating the manual dial 45 toward either the bean stocker 43 or the crushing section B, the switching shutter 31 is switched to the state shown in FIG. 2 or 1, respectively.

Note that this switching device is not limited to one consisting of the manual dial 45 and the switching shutter 31, but may be an electric type using a solenoid, and a series of operations can be controlled by a microcomputer built into the control panel 44. It is also possible to use a single switch.

Further, the structure and configuration of the crushing section B are not limited to those of this embodiment, and any type of crushing device may be used.

Furthermore, the flow of the above-mentioned coffee bean roasting and grinding device is shown in Fig. 6, and the coffee powder ground in the grinding section B can be directly sent to the filtration section C, such as a separate coffee grinder. Roasted beans that have been stocked in the bean stocker 43 are then taken out from the bean stocker 43 and transferred to the inlet port 30 again.
By returning it to the pulverizing section B, it can be pulverized.

〔Effect of the invention〕

As explained above, according to the method and apparatus for roasting and grinding coffee beans of the present invention, the operation of converting green coffee beans into either a roasted state or a ground coffee state is performed by a switching device. It can be used selectively and stored in that state, and when extracting coffee liquid, the required amount of coffee liquid can be met immediately. Moreover, it can be extracted without losing the original flavor of coffee, so it is possible to extract good-tasting coffee liquid. It has the effect of being able to be produced efficiently.

In particular, it has the advantage of being able to flexibly respond to the required amount of coffee liquid, and allowing economical operation with optimal throughput in each of the roasting section and the grinding section.

[Brief explanation of drawings]

FIG. 1 is a front sectional view of an embodiment of the apparatus to which the coffee bean roasting and grinding method of the present invention is applied, FIG. 2 is a front sectional view of the main part of the bean stocker introduction part of FIG. 1 is an enlarged perspective view of the filter in FIG. 1, FIG. 4 is an exploded perspective view of essential parts of the roasting section in FIG. 1, FIG. 5 is a front view of the manual dial for operating the switching shutter in FIG. 1, and FIG. FIG. 6 is a flow diagram of the apparatus of FIG. 1. 31...Switching shutter, 42...Powder stocker 4
3... Bean stocker, 45... Manual dial, A.
...Roasting section, B...Crushing section.

Claims (1)

[Claims] 1. While roasting green beans, remove the skin of the beans and stock the roasted beans, or continue to grind the roasted beans to obtain coffee powder. How to roast and grind coffee beans to stock. 2. A roasting section that removes the skin of green beans while roasting them, a bean stocker that takes out and freely stores the roasted beans from the roasting section, and a section that crushes the roasted beans from the roasting section. and a powder stocker for removably stocking coffee powder from the grinding section, and a switching device for selectively introducing roasted beans from the roasting section into the bean stocker or the grinding section. Bean roasting and grinding equipment.