JP3046080B2 - Coffee maker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to roasting from green coffee beans.
The present invention relates to a coffee maker that can obtain coffee through pulverization, extraction, and the like.

[0002]

2. Description of the Related Art The applicant of the present invention has filed Japanese Patent Application No.
Nos. 4697, Japanese Patent Application No. 2-50240, Japanese Patent Application No. 2-15
No. 0267 has provided a coffee maker capable of automatically obtaining coffee from green coffee beans. These coffee makers include a roaster for roasting green coffee beans, an extractor serving as a mill for crushing coffee, extracting coffee from crushed coffee beans and filtering, and an extractor serving as a mill. A blower that sends air to the mill, a hot water pouring device that pours high-temperature water into the extractor also serving as the mill, and a coffee server that receives the coffee liquid extracted and filtered by the extractor also serving as the mill.

[0003]

However, in the above-mentioned conventional coffee maker, a series of operations from roasting to cooling, crushing, extraction filtration, and reception by a coffee server are performed.
At least until the extraction and filtration is completed, the next operation cannot be performed. For this reason, the next roasting could not be performed during the extraction, and the efficiency in making a large number of cups of coffee was not good. On the other hand, in a conventional coffee maker, pouring of high-temperature water into the extractor by the hot water heater is configured such that the hot water is uniformly poured on the upper surface of the coffee beans stacked in the extractor. In particular, in the case of extraction with a mill / extractor with a milling rotary cutter installed near the bottom, the bottom of the stack below the rotary cutter tends to be dense, so in a uniform pouring method, the bottom of the stack becomes a neck. As a result, there is a drawback that the extract is difficult to fall down through the filter and the extraction and filtration require time. Similarly, there was a problem that the extract overflowed from the extractor. Also, the extraction itself was not in a state to extract the ideal coffee.

Accordingly, the present invention solves the above-mentioned conventional disadvantages,
An object of the present invention is to provide a coffee maker that can efficiently produce a large number of cups of coffee from green beans. Another object of the present invention is to provide a coffee maker that can extract and filter coffee with good flavor and quickly in extraction using an extractor that is also used as a mill.

[0005]

In order to achieve the above object, a coffee maker of the present invention comprises a roasting machine for roasting green coffee beans, and a roasted coffee discharged from the roasting machine after finishing roasting. A temporary storage tank for receiving the beans, a blower for blowing air into the temporary storage tank to cool the beans received in the temporary storage tank, and cooled roasted beans discharged from the temporary storage tank And then pulverizing the coffee beans, extracting the coffee liquid from the ground coffee beans and filtering the same, and a mill-extractor, a hot-water pouring device that pours high-temperature water into the mill-extractor, and extracted and filtered. The first feature is that the coffee server that receives the coffee liquid is arranged in one case. In addition to the first feature, the coffee maker according to the present invention further includes a series of operations from roasting by a roaster to ventilation cooling in a temporary storage tank, and extraction of beans from the temporary storage tank as a mill. Crushing in a vessel,
A second feature is that a series of operations up to extraction and filtration are configured to be individually operated. Further, the coffee maker of the present invention is a coffee maker capable of performing all steps of roasting green coffee beans, blowing and cooling the same, crushing the same, and extracting and filtering the same with high-temperature water. High-temperature water pouring port from the center of the extractor to the outside
Placed in one place biased by hot water pouring
Without dispersing widely, from the center of the top surface of the ground coffee beans stacked in the extractor
The third feature is that the water is poured only in a part of the region deviated in the direction .

[0006]

According to the first feature of the present invention, the beans roasted in the roaster once enter a temporary storage tank, where they are blown and cooled. Then, from the temporary storage tank, it further enters the extractor serving also as a mill, where it is pulverized and further extracted and filtered. Without a temporary storage tank, roasted beans must be directly cooled in a combined mill and extractor, so roasting cannot be performed in parallel during extraction or the like. If done in parallel, even after roasting, the beans must be kept in the roasting machine, and important beans cannot be cooled, so that good coffee cannot be obtained. By providing the temporary storage tank, roasting can be performed during extraction by the combined use of the mill and the extractor. Extraction can also be performed simultaneously during roasting. Also, the roasted beans can be immediately cooled strongly in the temporary storage tank.

Further, according to the second feature of the present invention, a series of operations from roasting by a roaster to ventilation cooling in a temporary storage tank, and extraction of beans from the temporary storage tank to extraction by a mill / multipurpose extractor. By individually operating the series of operations from pulverization to extraction filtration, it becomes possible to roast green coffee beans for the next time during extraction, and the time saving effect is very large. Therefore, many cups of coffee can be made in a short time.

[0008] According to a third aspect of the present invention, note
The gate is located at a location offset from the center of the extractor to the outside
This allows the hot water pouring to be spread widely.
Crushed coffee beans stacked in the extractor
Part of the upper surface of the surface deviated outward from the center
So that it can be poured only to
First of all, the amount of hot water is concentrated and poured in a partial area,
Sufficient amount of hot water soaks down from one point first
Go to and reach the layer of fine coffee bean flour at the bottom of the stack
And from there it spreads out horizontally and further under the lamination
Wetting from the entire part to the upper layer. And the hot water is small
Wet from lower layer to upper layer, swelled first
The lower layer powder is lifted up properly, etc.
Uniform extraction is achieved. A coffee with good taste can be obtained by being uniformly extracted from the whole of the laminated coffee bean flour. In addition, since the hot water is moistened from below to lift the coffee bean powder, the filtration by the filtration filter unit is also smoothly performed, and the extraction filtration can be performed in a short time. If hot water is poured evenly on the top of the stack , or
The amount of hot water poured into each part
As a result, the entire layer gradually wets from the top
Will be. For this reason, the fine and
The bean flour can be lifted from below
As a result, uniform filtration is not performed smoothly and overflow
It takes time for extraction filtration, such as
They do not extract well.

[0009]

1 is a longitudinal sectional view of a coffee maker showing an embodiment of the present invention, FIG. 2 is a sectional view taken along line AA in FIG. 1, and FIG. 2 is a sectional view taken along line BB in FIG. A roaster 10 is provided in the upper part of the outer case 1, and a temporary storage tank 20 for receiving roasted beans falling from the roaster 10 is provided diagonally below. The blower 30 is attached to the temporary storage tank 20. An extractor 40 serving also as a mill is provided below the temporary storage tank 20, a pouring device 50 is provided for pouring high-temperature water into the extractor 40 serving as a mill, and receives coffee liquid extracted and filtered. A coffee server 60 is located.

The roasting device 10 is a device for roasting green coffee beans therein. A ring-shaped far-infrared heater 12 is disposed above the inner space of a circular container 11 and rotates along the inner bottom surface. A stirring blade 13 is provided. Reference numeral 14 denotes a deodorizing and deodorizing filter plate, reference numeral 15 denotes a motor for stirring blades, reference numeral 16 denotes a cover of a raw bean input port, and reference numeral 17 denotes a door for discharging roasted beans. The door 1
7 is opened and closed by a solenoid 18. Reference numeral 19 denotes a temperature sensor provided in the roasting machine 10, and the roasting state is detected by the sensor 19.

The temporary storage tank 20 is also clearly shown in a perspective view in FIG. Double walled outer wall 2
1 is provided with a storage basket 22 made of a coarse mesh. The roasted beans that have fallen out of the roaster 10 and fall into the storage basket 22 are received. A discharge port 22a is provided at the lowermost portion of the storage basket 22, and the slide port 24 is moved by a solenoid 23 to open and close the discharge port 22a. The blower 30 penetrates through the outer wall 21 and its outlet faces the storage basket 22. Thereby, the beans in the storage basket 22 are cooled to room temperature in a short time (for example, two to three minutes) by the wind from the blower 30.

It is generally said that coffee beans should be aged overnight after roasting. The reason is that if the water is not removed well, a blue odor like a grassy scent mixes with the scent, and the tannin becomes pyrogallol acid, which causes tingling and turbidity. Even if it is completely roasted, the above phenomenon always occurs when it is immediately made into coffee. In order to completely prevent these phenomena and obtain delicious coffee, cooling by the temporary storage tank 20 and the blower 30 is essential. Drop the roasted beans into the temporary storage tank 20 and 2-3
By cooling to room temperature in minutes, the fragrance is outstandingly good, coupled with pulverization and extraction by the extractor 40 which also serves as a mill described below,
Delicious coffee with a good balance of flavor, acidity and bitterness.

The extractor 40, which also serves as a mill, is provided with a rotary cutter 42 for the mill at the lower portion inside a cylindrical mill case 41 as shown in the perspective view of FIG. I have. Below the filter 43 is a coffee liquid outlet 44. This outgoing path 44
The coffee liquid falls to the coffee server 60 from the falling port 45 at the tip of the above. The falling port 45 can be provided with a dripping prevention means. 46 is a mill motor for rotating the rotary cutter 42. At the upper part in the mill case 41, a prevention plate 47 for preventing beans from jumping out during milling,
48 are provided.

The pouring device 50 includes a cartridge type water tank 51 shown in FIG. 3, a pipe 53 for carrying water from the tank 51 to the pouring port 52, and a pipe 53 provided under the mounting portion of the coffee server 60. The heater 54 heats and exchanges heat with the heater 54. When the power of the heater 54 is turned on, the water in the water tank 51 is turned into high-temperature water by the heater 54, and
2 is naturally carried and poured into the extractor 40 which is also used as a mill.

The pouring port 52 is disposed at a position deviated outward from the center of the extractor 40, which also serves as a mill. As shown in FIGS. 5 and 6, high-temperature water poured from the extracting port 52 is supplied to the extractor 40. A part of the upper surface D of the crushed coffee beans laminated inside is limited to be dropped. That is, FIG.
To explain further, the beans dropped into the extractor 40 which is also used as a mill and pulverized by the rotary cutter 42 are fine in the lower layer L and pressed by the rotary cutter 42 toward the filtration filter 43 side. It is in a state.
Further, the middle layer M is in a state of medium particles, and the upper layer U is in a rough state. Further, from the viewpoint of taste, the lower layer L is dark, bitter, strong in color, and a sticky liquid is extracted.
From the upper layer U, a thin, bitter liquid that is sticky to the tongue is extracted. Also, from the middle layer M, with a taste in between them,
The soured liquid is extracted. When the hot water is dropped on the upper surface of the beans stacked in this manner, the lower layer interferes and the liquid is not easily filtered downward from the filter 43.
Extraction and filtration take time and overflow occurs. In addition, each layer of the laminate is extracted without being mixed with each other even during the extraction, and the taste of coffee is not good.

In the present invention, the hot water is dropped into the partial region D on the upper surface of the laminate without being dispersed, and the dropped hot water permeates downward and reaches the lower layer portion L as it is. Then, after spreading the entire lower layer portion L and moistening it, the hot water is further added to the lower layer portion L to rise to the middle layer portion M and the upper layer portion U, thereby lifting the entire stacked portion. As a result, the powder in each layer is mixed with each other and the whole is extracted on average. Thus, at the end of the filtration, the surface is flat and somewhat shiny and shiny (indicating complete extraction) and the bubbles have disappeared completely. By pouring the lower layer portion L of the lamination first to lift the whole, the extraction filtration can be completed smoothly and in a short time.
Also, since the powder in each layer is mixed and extracted together on average, a coffee with good taste can be obtained by the mixed extraction of each layer.

The operation of the apparatus is performed by a controller built in a microcomputer (hereinafter referred to as a microcomputer) 70. With reference to FIGS. 1 and 7, the microcomputer 70 includes a fully automatic switch 81 of an operation panel 80, a first switch 82, a second switch 83, a roasting degree adjusting unit 84, and a roasting temperature sensor of the roaster 10. By inputting the signal from 19 etc.
The roasting heater 12, the stirring blade 13, the solenoid 1
8, blower 30, solenoid 23, rotary cutter 42,
An operation command is output to the pouring heater 54 and the like. The operation status is output to the display unit 90.

The operation by the microcomputer 70 includes a fully automatic operation for performing a series of operations from roasting of green beans to extraction and filtration, and the roasting of green beans by the roaster 10 to air blowing in the temporary storage tank 20. And a first operation in which a series of operations from the discharge of beans from the temporary storage tank 20 to pulverization in the extractor 40 serving as a mill and extraction and filtration are performed. I am able to do a second driving. That is, referring to FIG.
If 0, it is determined whether or not the fully automatic switch 81 is turned on (step 101). If not, the process proceeds to step 102. If the first switch 82 is turned on, the program of the flow 1 shown in FIG. 9 is selected. The first operation is started (step 103). When the second switch 83 is turned on, FIG.
The program of flow 2 shown in FIG. 0 is selected, and the second operation is started (step 104). If the fully automatic switch 81 is turned on in step 101, the flow 1 and the flow 2 are sequentially selected to start the fully automatic operation (step 10).
5).

The advance to the microcomputer 70 to store the pre-programmed for the first operation (indicated by the flow 1 in FIG. 9) and program for the second operation (shown in the flow 2 in FIG. 10). In FIG. 9, the flow of the first operation program is as follows. First, the ON command of the roasting heater 12 and the stirring blade motor 1
5 is issued (step 111), and then the temperature sensor 19 detects a certain temperature or higher (step 112).
When the roasting is completed, an instruction to turn on the solenoid 18 of the roaster 10 is issued (step 113). Then, after waiting for a predetermined time (the time required for the rotating blades 13 to drop the beans into the temporary storage tank 20, 5 to 7 seconds) (step 114),
An instruction to turn off the roasting heater 12, the motor 15, and the solenoid 18 is issued, and an instruction to turn on the blower 30 for a predetermined time is issued (step 115). The ON time of the blower 30 is determined in advance as 2 to 3 minutes. Thus, the operation from roasting of the raw beans to cooling and storage in the temporary storage tank 20 is performed . In step 112, roasting may be controlled by time. The degree of roasting is determined by the operation of the roasting degree adjusting unit 84.
This can be performed by changing the temperature determined by the sensor 19 or changing the roasting time.

In the flow of the second operation program, as shown in FIG. 10, first, the solenoid 23 of the temporary storage tank 20 is instructed to be turned on for a predetermined time (step 121). Thereby, the beans fall from the temporary storage tank 20 into the extractor 40 which is also used as a mill. Next, a command to turn on the rotary cutter 42 is issued (step 122). After a certain time (for example, 15 seconds), the beans are pulverized appropriately.
3), turn off the rotary cutter 42, and
4 is turned on (step 124). Thereby, the high-temperature water heated from the water tank 51 through the pipe 53 is poured into the extractor 40 which is also used as a mill. When it is detected that the water in the water tank 51 has run out by a temperature sensor or a water switch (not shown), it is determined that the pouring is completed (step 1).
25), a command to turn off the heater 54 is issued.

The first switch 82 and the second switch 83
Through the use of, during the bean crushing and extracting operations by the second switch 83, the operation from the next roasting of the beans to the cooling can be performed, for example, one can make 12 cups at a time In contrast, when fully automatic, 36 cups can be made in one hour (three can be made), but when operated separately with the first and second switches, there is an advantage that 72 cups can be made in one hour.

[0022]

According to the present invention, there is provided the above construction.
According to the coffee maker described in the above, instead of putting the roasted beans directly into the extractor serving also as a mill, the beans can be temporarily put into a temporary storage tank, where they can be cooled and temporarily stored. Therefore, cooling of important beans can be performed exclusively in the temporary storage tank, and cooling can be performed quickly and sufficiently. In addition, the presence of the temporary storage tank makes it unnecessary to link the operation of the roaster with the operation of the extractor that also serves as the mill, making it possible to operate both separately. According to the coffee maker described in claim 2, the operation from roasting to cooling and the operation from pulverization of beans to extraction and filtration can simultaneously proceed, and a time saving effect when making a large number of cups of coffee. Is big. That is, a large number of coffees can be efficiently made in a short time. According to the coffee maker of the third aspect, the pouring port of the high-temperature water into the extractor serving also as the mill is deviated outward from the center of the extractor.
Placed in one place, so that the pouring of warm water,
Powder that is layered in the extractor without being widely dispersed
Outward direction from the center of the top surface of the ground coffee beans
So that it can be poured into a limited area
First of all, a sufficient amount of hot water from the partial area
Penetrate downwards into a layer of fine coffee grounds in the lower layer
Can be reached, and from there a sufficient amount of water
It can be spread all over the lower part in the horizontal direction,
The hot water from the bottom of the stack to the top
Becomes possible. Therefore, the hot water flows from the dense lower layer to the upper layer.
By being able to wet in the direction,
Swell enough with a sufficient amount of hot water to lift
As a result, the penetration of hot water into the entire laminated powder is sufficiently achieved,
Make sure and evenly distribute the coffee liquid from the whole coffee bean flour
It can be extracted to obtain a good coffee. Of course
The hot water is moist from the bottom to the top and the coffee bean flour rises
By filtering, filtration by the filtration filter section is also smooth
And the extraction and filtration can be performed in a short time.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of a coffee maker of the present invention.

FIG. 2 is a sectional view taken along the line AA in FIG.

FIG. 3 is a sectional view taken along line BB in FIG.

FIG. 4 is a partially sectional perspective view of a temporary storage tank.

FIG. 5 is a perspective view of an extractor serving also as a mill.

FIG. 6 is a diagram illustrating a state of extraction and filtration by an extractor that also serves as a mill.

FIG. 7 is a control block diagram of a microcomputer.

FIG. 8 is a flowchart of a control operation by the microcomputer.

FIG. 9 is a flowchart of a first operation program stored in a microcomputer.

FIG. 10 is a flowchart of a second operation program stored in the microcomputer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer case 10 Roaster 20 Temporary storage tank 30 Blower 40 Miller / extractor 50 Pouring device 60 Coffee server 70 Microcomputer 80 Operation panel 81 Fully automatic switch 82 First switch 83 Second switch

Claims (3)

(57) [Claims] 1. A roasting machine for roasting green coffee beans, and receiving roasted beans discharged from the roasting machine at the end of roasting.
Receiving a temporary storage tank, and a blower for sending air to the temporary storage tank for cooling the beans received in the temporary storage tank, the roasted beans of chilled discharged from the temporary storage tanks, After pulverizing, the coffee liquid is extracted from the ground coffee beans and filtered as a mill. The extractor also serves as a mill, the hot water is poured into the extractor also serving as a mill, and the coffee liquid extracted and filtered. A coffee maker, wherein a receiving coffee server is arranged in one case . 2. A series of operations from roasting by a roaster to ventilation cooling in a temporary storage tank, and a series of operations from discharge of beans from the temporary storage tank to pulverization by a combined use mill and extraction and filtration. 2. The coffee maker according to claim 1, wherein the coffee maker is configured to be individually operated. 3. A coffee maker capable of performing all steps of roasting coffee green beans, cooling, blowing, pulverizing, and extracting and filtering with high-temperature water. The hot water outlet is offset from the center of the extractor to the outside.
In one place, which allows for the pouring of warm water
Without dispersing , the outer surface from the center of the top surface of the ground coffee beans stacked in the extractor
A coffee maker characterized by being poured only in a partially biased area .