JPH01285222A - Fully automatic coffee maker - Google Patents

Abstract

PURPOSE:To extract coffee from the beans of a desired roasting degree by attaching a raw bean roasting means to a coffee bean milling part driven by a motor by providing both the functions of a coffee maker with mill and a coffee bean roaster. CONSTITUTION:Raw beans are charged to a roasting chamber 7 by the required quantity thereof, a container cover 6 is close to close a roasting and grinding chamber 7 and a heater is turned on by a time set. A stirring and cutter blade 3 is rotated at low speed to constantly stir the beans so as to uniformly roast them. During the roasting, the chaff of the beans generated due to the causes such as the abrasion at the time of stirring and the expansion of the beans is discharged to a lower detachably mounted chaff case 9 from a chaff removing hole 8. Smoke or smell generated from the beans in which the roasting is being completed is reburnt by oxidizing catalyst 5 and substantially lost. When a roasting process previously set to a desired roasting degree by a timer is completed, a roasting heater 4 is temporarily turned OFF, a variable speed motor 2 is rotated at high speed to shift to a coffee bean milling process.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a fully automatic coffee brewing device in which a green bean roasting means is added to a coffee bean grinding device.

[Conventional technology] Conventionally, this type of coffee brewer comes in two types: a type with only a drip function that drips hot water onto coffee grounds and extracts coffee, and a type with a mill function that grinds coffee beans. It can be broadly classified. Furthermore, types with mill functions include:
There is a replaceable type that replaces the coffee powder with the extraction bath get in the extraction part, and a type that does not require replacing the coffee powder.
There is an automatic type in which the mill part and the extraction part are integrated or are arranged so that the air blows out from the mill part and is deposited on the extraction bath get. Furthermore, as an apparatus for roasting green coffee beans, there is an apparatus that roasts the beans using heat such as an electric heater while stirring the beans.

[Problems to be Solved by the Invention] However, since conventional roasting devices only have a roasting function, the green beans are roasted by the roasting device, and the roasted coffee beans are sent to the mill section of the coffee maker. It was necessary to replace only the required amount, and there was nothing that could automatically make coffee liquid. In general, home coffee roasters are not widely available because they are limited in quantity, expensive, time-consuming, and involve many work steps.
A: Compared to green beans, which are inexpensive and can be stored for several years, households often use roasted coffee beans, which are more expensive and can only be brewed deliciously for a short period of time (about a week), in small quantities. I had no choice but to buy them one by one.

The present invention was made to solve these problems, and its first purpose is to allow green coffee beans to be easily roasted at home according to the desired roasting method. The second objective is to further improve the process of green beans -> roasted beans -> coffee powder -> coffee liquid by adding a furnace means to the conventional automatic coffee grinder equipped with a coffee bean grinder. It is convenient because it can be done in a short time and fully automatically. Furthermore, since the coffee bean grinding chamber can also be used as a roasting chamber, there are great advantages in terms of space and cost.

[Means for Solving the Problems] In order to achieve this object, the fully automatic coffee boiler of the present invention adds a green bean roasting means to a coffee bean grinding device driven by a motor, and uses the conventional coffee grinder to It is configured to have the functions of both a coffee maker and a coffee bean roaster.

[Operation 1] According to the present invention having the above configuration, it is possible to integrate a green bean roasting device which also serves as a coffee bean grinding device, so that even ordinary households can easily roast green beans and make freshly roasted beans. Delicious coffee liquid can be extracted from coffee beans.

[Example] Hereinafter, an example embodying the present invention will be described with reference to the drawings.

First, the fully automatic coffee brewer shown in FIG. 5, a chaff case 9 located below the chaff removal hole 8 of the bean container 1, a water tank 10 for water storage, and a check valve 11. A water pipe 1 is caulked around the heat-retaining heater 12 and the roasting heater 4, and constitutes a water passage for warming water from a water tank and dripping it from above the coffee powder.
3, an extraction basket 14 in which coffee powder blown out from the roasting chamber/grinding chamber 7 is deposited, and coffee liquid is extracted with hot water dripping from above; It consists of a bottle 15 that is heated to a certain temperature. Incidentally, a coffee bean grinding device is constituted by the bean container 1, the variable speed motor 2, the cutter blades 3, and the like.

Next, the operation of the fully automatic coffee brewer of this embodiment will be explained with reference to FIGS. 1 and 2. First, the bean container Futhalo is opened and the required amount of raw beans is put into the roasting chamber/grinding chamber 7. When the bean container Futhalo is closed, the roasting chamber/grinding chamber 7 is sealed, and the roasting heater 4 is turned on by setting a timer.
The roasting chamber/grinding chamber 7 becomes a furnace. At this time, the variable speed motor 2 rotates at a low speed, and the cutter blade 3 which also serves as the stirring stage also rotates at a low speed, thereby constantly stirring the beans so that the beans can be roasted uniformly. Incidentally, during roasting, the rotary valve 16 provided corresponding to the bottom and outer peripheral wall of the bean container 1 has the chaff removal hole 8 open and the coffee powder blowout hole 17 closed, as shown in FIG. During roasting, bean hulls (chaff) generated due to friction caused by stirring and swelling of the beans are discharged from a chaff remover 68 into a removable chaff case 9 located below.

Near the end of roasting, smoke and burnt odor are generated from the beans, but these are caused by the oxidation catalyst 5 which is effectively and sufficiently heated just above the roasting heater 4 provided in the upper bean container Phthalo. The catalytic effect of the gas allows it to be reburned and completely extinguished. When the roasting process, which is set in advance by a timer to reach the desired degree of roasting, is finished,
The field roasting heater 4 is temporarily turned off, the variable speed motor 2 rotates at high speed, and the coffee bean grinding process begins.

At this time, the rotary valve 16 rotates by a certain amount in the direction of the arrow in FIG. 2, so that the chaffing hole 8 is closed and the coffee powder blowing hole 17 is opened.

The coffee beans in the bean container 1 are crushed by the cutter blade 3 that rotates at high speed, and when the coffee beans become smaller than the size of the coffee powder outlet hole 17, the force when they collide with the cutter blade 3 that also serves as the stirring stage is The beans fly out of the bean container 1 due to the reaction and wind pressure, and are deposited in the paper filter 18 that has been set in the extraction basket 14 in advance. At this time, the coffee powder blown out from the coffee powder blowing hole 17 is guided by the guide plate 19 and is deposited uniformly in the paper filter 18 of the brewing basket 14.

The coffee beans in the bean container 1 are all ground and deposited in the extraction basket 14, and the coffee bean grinding process ends.
In this embodiment, a timer is set for 3 minutes, which is the time of the coffee bean grinding process plus α when the maximum number of beans is put into the bean container 1, as the same process.

Next, the coffee liquid extraction process begins, but the water in the water pipe 13 expands due to the heat conduction of the heat retaining heater 12, which was turned on by the timer setting several minutes before the end of roasting, and due to the pressure. Water tank 1 closed by check valve 11
It rises in the direction of the pouring port 20 on the side opposite to the 0 side, and the pouring port 20
It is dripped onto the coffee powder in the brewing baths 1 to 14 below. When the water is dripped, that amount of water is discharged from the water tank 10 into the water pipe 13. By repeating this process, all the water in the water tank 10, which had been filled in the required amount in advance, is discharged.Furthermore, in this embodiment, the water pipe 13 is caulked around the heat-retaining heater 12, and is warmed by its heat conduction. Not only that, but it is also caulked around the roasting heater 4, which is turned on again at the same time as the coffee bean grinding process is completed, so that the coffee liquid can be extracted using hotter water that has been reheated here.

Coffee powder and Gio filter 1 in extraction basket 14
The coffee liquid that has passed through 8 is dripped from the extraction hole 2 of the extraction path get 14, and is all collected in the lower bottle 15. When the roasting heater 4 is turned off and only the heat retention heater 12 is turned on, the coffee liquid is poured out. Finish all steps other than extraction.

As is clear from the above description, the fully automatic coffee brewer of this embodiment is characterized by the following configuration.

That is, the bean container 1 of the coffee bean pulverizer is made of a metal that can withstand high temperatures and shocks, such as stainless steel, and a heater 4 is installed inside the pulverizer, and the upper part of the coffee bean container 1 is reburned to reduce smoke and odors. An oxidation catalyst 5 is disposed in a part of the bean container 1, and a chaff removal hole 8 is provided to remove chaff from coffee beans generated during roasting, and a chaff removal hole 8 is provided to blow out ground coffee powder during the grinding of the beans into an extraction basket 14. A coffee powder outlet hole 17 is provided for roasting, and during roasting, the chaff outlet hole 8 is opened and the coffee powder outlet hole 17 is closed, and when beans are ground, the chaff outlet hole 8 is closed, and the coffee powder outlet hole 17 is closed.
is equipped with a rotatable valve 16 that is set to open, and a variable speed motor 2 that is set to rotate at a low speed during roasting and at a high speed during grinding drives the cutter blade 3 that also serves as the stirring stage, and the chaff removal hole is A chaff gauge 9 is disposed below the water pipe 13 so that the water in the water pipe 13 that has risen due to heat conduction from the heat-retaining heater 12 is reheated by the heat of the roasting heater 4, and coffee liquid can be extracted at a higher temperature. are arranged around the roasting heater 4.

Therefore, since the two heaters, the drawer 12 for keeping warm and the roaster 4 for roasting, each have the role of heating the pipe through which the water flows, coffee liquid can be extracted at a higher temperature than before.
You can get better tasting coffee.

The present invention is not limited to the embodiments detailed above, and for example, the milling method may be a thin type, or the extraction method may be a siphon type, and any other method may be used without departing from the spirit thereof. Various changes can be made.

[Effects of the Invention] As is clear from the detailed description above, the present invention adds a means for roasting green beans to the coffee bean grinding device, and uses the roasting chamber and the grinding chamber both, so it is small and compact. Moreover, costs can be kept low. Furthermore, since it is a fully automatic coffee boiler with a roasting function, which did not exist before, anyone can easily extract delicious coffee liquid from freshly baked beans at their desired roast level. . In addition, as the distribution of green beans has become more popular these days, it has become an opportunity for general consumers to purchase green beans that are inexpensive and can be stored for a long time. The social synergy of being able to set the price low can also be expected.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment embodying the present invention. Figure 1 is a side sectional view of a fully automatic coffee boiler, and Figure 2 is a bean container and a rotary valve. FIG. 3 is a perspective view showing the configuration, and FIG. 3 is a time chart of the entire process. In the figure, 1 is a bean container that is part of the coffee bean grinding device, 2
is a variable speed motor, 3 is a cutter blade that also serves as a stirring blade, 4 is a roasting heater, 6 is a bean container lid, and 7 is a roasting chamber and crushing chamber. Patent application Katsuji Kawashima, President Brother Industries, Ltd. No. 20 Figure 3

Claims (1)

[Claims] 1. A fully automatic coffee boiler equipped with a coffee bean grinding device driven by a motor, characterized in that green bean roasting means is added to the coffee bean grinding device.