JPH058918Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an automatic coffee brewing device, and more particularly to an automatic coffee brewing device that is provided with a grinding section (mill) for grinding coffee beans and an extraction section for extracting coffee liquid. .

BACKGROUND TECHNOLOGY Automatic coffee brewing devices (so-called automatic coffee makers) generally consist of a grinding section (mill section) into which coffee beans are placed and which grinds them, and an extraction section that extracts coffee liquid from the ground coffee beans. ing. Furthermore, as a means for conveying the coffee beans ground in the grinding section to the extraction section, there is a device in which the grinding section and the extraction section are communicated with each other, and a mesh member is disposed in the communication section. FIG. 4 shows an automatic coffee brewing device 1 equipped with this type of conveying means.
The automatic coffee brewing device 1 shown in the figure is shown with the top lid removed.

In the figure, 2 indicates a crushing section, and 3 indicates an extraction section. The crushing section 2 is equipped with a rotating cutter 4 made of stainless steel.
As the machine rotates, the coffee beans are ground.
Further, the extraction section 3 is a drip type extraction section, and is configured such that a paper filter (not shown) is installed inside and hot water is dripped from a sprue 5. Note that the sprue 5 is configured to be movable in the direction indicated by the arrow in the figure.

A communication path 6 is formed between the crushing section 2 and the extraction section 3, and a mesh member 7 is provided in this communication path 6.
is installed. A large number of small holes are formed in this mesh member 7, and only the coffee beans that have been ground to a predetermined size in the grinding section 2 are passed through the mesh member 7 by the rotational force (centrifugal force) of the rotary cutter 4 and extracted. It is configured to be loaded into the section 3.

Furthermore, when coffee beans are ground in the state shown in FIG. Covers 8 and 9 are attached as shown in the figure and FIG. Especially extraction part 3
Since it is necessary to drip hot water from the sprue 5 at the time of extraction, a plurality of pouring holes 10 are provided at the top of the cover 9 attached to the top.

Problems to be Solved by the Invention However, in the above-described conventional automatic coffee brewing device 1, the cover 9 attached to the upper part of the brewing part 3 is
Since the pouring hole 10 formed in the molten metal was simply a hole opened to the outside, the rotational force of the rotary cutter 4 and the wind pressure from the crushing section 2 caused the pouring hole 10 to be rapidly poured into the extraction section 3.
The small granular coffee beans fed into the brewing section 3 have the same force, and some of them fly out from the pouring hole 10 and scatter. If some of the ground coffee beans are scattered outside through the pouring hole 10, the scattered coffee beans will adhere to the tops of the covers 8 and 9 and the inner wall of the top lid, making it difficult to remove them. There was a problem that it was troublesome (the route through which the coffee beans scatter from the pouring hole 10 to the outside is shown by an arrow in FIG. 6).

SUMMARY OF THE PRESENT DEVICE The present invention has been made in consideration of the above-mentioned points, and an object of the present invention is to provide an automatic coffee brewing device that can prevent coffee beans from scattering from the pouring hole.

Means for Solving the Problems In order to solve the above problems, the present invention includes a grinding section that grinds coffee beans loaded with a rotary cutter, and a grinding section that crushes coffee beans that are ground by the rotational force of the rotary cutter. In an automatic coffee brewing device equipped with an extraction part that is loaded and that pours hot water from a pouring hole to extract coffee liquid, a plate-shaped substrate is provided with particles having a particle size that is approximately the same as that of the ground coffee beans, or A filter member having a structure in which a plurality of anti-scattering holes having a diameter smaller than that are formed in a uniform or non-uniform alignment is disposed above the pouring hole formation position of the extraction section. That is.

Function In the automatic coffee brewing device configured as above,
Since the ground coffee beans are not scattered outside through the pouring hole by the filter member, the generation of dirt can be prevented and cleaning becomes easy. Moreover, since the filter member allows hot water to pass through, there is no problem during extraction.

Embodiments Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an automatic coffee brewing device 11 (hereinafter simply referred to as the device) which is an embodiment of the present invention.

The device 11 shown in the figure includes a crushing section 12, an extraction section 1
In addition to 3, it is equipped with a roasting section 14, and the processes of roasting, pulverizing, and extracting green coffee beans can be automatically performed in one device 11. . Therefore, with the device 11, coffee with high flavor can be made extremely easily.

The roasting section 14 is composed of an upper head 15, a lower head 16, a roasting container 17, etc., and is loaded with green coffee beans and roasts them. (This thin skin reduces the flavor of coffee). This roasting section 14 uses hot air roasting as a roasting means, and for this purpose, the upper head 15 is provided with a blower and a heater for discharging hot air from the discharge port 15a. Further, the upper head 15 is provided with a thin skin collection mechanism, which will be described later.

A motor for rotating the roasting container 17 is installed in the lower head 16, and two blades 18a and 18b are provided inside the roasting container 17, so that the roasting container 17 is rotated during roasting. The rotation of the blades 18a, 18
By b, the coffee beans are appropriately stirred and roasted evenly. Further, an opening/closing mechanism for opening and closing the roasting container 17 is provided inside the lower head 16. This opening/closing mechanism, for example, opens and closes a shutter provided on the roasting container 17 using a drive means such as a solenoid provided in the lower head 16, and thereby automatically roasts roasted coffee beans. It can be sent to the crushing section 12 from the roasting container 17. The upper head 15 and lower head 16 are fixed, and the fixed upper/lower head 15, 16
On the other hand, the roasting container 17 is configured to be detachable.

The skin collecting mechanism is composed of a cap 19 attached to the roasting container 17, a chaff box 20, a hot air discharge section 21, and the like. Although FIG. 1 shows the hot air discharge section 21 in an open state, during roasting, the hot air discharge section 21 is rotated in the direction indicated by the arrow in the figure and closed.

A large number of slits are formed in the cap 19, and these slits are of a size that does not allow coffee beans to pass through, but allows the thin skin produced from the coffee beans to pass through. The hot air discharged from the discharge port 15a enters the roasting container 17 through a slit formed in the cap 19 and roasts the coffee beans.
Further, the discharged hot air convects within the roasting container 17, travels to the outside of the roasting container 17 from the cap 19, and is discharged to the outside of the apparatus 11 from the hot air discharge section 21. At this time, the thin skin generated from coffee beans during roasting is light and moves with the flow of hot air, but the hot air discharge section 21 is equipped with a filter that prevents the thin skin from passing through, so the thin skin does not come out. Unable to do so, it falls under its own weight. Since the chaff box 20 is disposed at a lower position of the hot air discharge section 21, thin skins are collected in the chaff box 20.
The chaff box 20 is configured to be pulled out from the upper head 15, and when thin skin accumulates, the chaff box 20 can be pulled out and the thin skin can be discarded. As described above, according to the skin collecting mechanism, the skin generated during roasting can be effectively collected, and the work of discarding the skin can be easily performed.

Next, the crushing section 12 and the extraction section 13 will be explained. The basic structure of the crushing section 12 and the extracting section 13 is substantially the same as the conventional structure explained using FIGS. 4 to 6, except for the filter member 23, which is the essential part of the present invention. Therefore, the contents already explained in the conventional example will be omitted.

The grinding section 12 is loaded with roasted coffee beans from the roasting section 14 and grinds them, and is provided with a rotary cutter 22 for grinding coffee. Although not shown in FIG. 1, an upper cover 24 as shown in FIGS. 2 and 3 is attached to the top of the crushing section 12. Upper cover 2
4 is provided with a loading port 25 so that roasted coffee beans can be automatically loaded from the roasting section 14.
Further, an upper cover 26 is attached to the upper part of the extraction part 13, and a cylindrical recess 26a is formed in the part where hot water is dripped from the sprue 27 (see Fig. 1), and a cylindrical recess 26a is formed at the bottom of the recess 26a. A hole 28 is provided. Further, a mesh member 29 is provided in a communicating portion between the crushing section 12 and the extracting section 13.

The filter member 23, which is the essential part of the present invention, is attached to the recess 26a of the upper cover 26. The filter member 23 is made of a stainless steel disc with a large number of small holes formed therein, and the diameter of the small holes is set to a size that does not allow the crushed coffee beans to pass through. The diameter is such that the hot water is smoothly supplied into the extraction part 13.

Specifically, the diameter of ground coffee beans varies from about 0.1 mm to 2.0 mm, and it is difficult to completely prevent the ground coffee beans from scattering. However, in practice, the diameter of the small holes that can prevent the scattering of ground coffee beans to an extent that does not pose a problem is approximately 0.5 mm to 2.0 mm.

Also, the diameter of this small hole is determined by the filter member 23.
The number of small holes formed is also related, and when there are many small holes, the efficiency of preventing the crushed coffee beans from scattering can be improved by selecting a smaller diameter. On the other hand, when the diameter of the small holes is set to be large, the efficiency of preventing the crushed coffee beans from scattering is improved by decreasing the number of small holes.

On the other hand, the small holes have the function of preventing the crushed coffee beans from scattering, and also have the function of supplying hot water to the extraction section 13. It is desirable that the hot water be supplied to the extraction section 13 as uniformly as possible, since any imbalance in the supply of hot water to the extraction section 13 will cause problems in the extraction of coffee liquid.

Therefore, it is desirable that the small holes be arranged uniformly over the entire surface of the filter member 23, but even if the small holes are formed unevenly, it will not be a problem in terms of the efficiency of preventing the scattering of ground coffee beans. There isn't.

Therefore, the rotary cutter 2 is crushed by the crushing section 12.
Even if the coffee beans are loaded into the extraction part 13 with force due to the rotational force of 2, the coffee beans are prevented from passing through the pouring hole 28 by the filter member 23.
It is possible to prevent coffee beans from scattering to the outside. This prevents coffee beans from adhering to the upper covers 24, 26 and the inner wall of the upper lid 30 (shown in FIG. 1), thereby reducing the amount of maintenance required. In addition, the filter member 23 is inexpensive because it simply has a small hole of a predetermined diameter formed in a disc-shaped metal plate, and is easy to install by simply placing it in the recess 26a of the upper cover 26. be. Furthermore, since it has an easy-to-clean shape, it is easy to care for and has great hygienic effects.

In the above embodiment, the filter member 23 is formed by forming a large number of small holes in a metal (stainless steel) disk and placing the filter member 23 on the upper cover 26.
Not limited to this, for example, the filter member 23 may be directly disposed at the bottom of the recess 26a,
Alternatively, a large number of small holes may be formed directly in the recessed portion of the upper cover formed of resin, and the filter member may be integrally formed with the upper cover.

Furthermore, the filter member is not limited to being made of metal; paper filters, cloth filters, etc. can also be used.

Effects of the invention As described above, according to the invention, crushed coffee beans no longer scatter outward from the pouring hole, preventing the generation of stains and eliminating the need to remove scattered coffee beans. It has the advantage of requiring less time and effort to maintain.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a device that is an embodiment of the present invention, Fig. 2 is an enlarged view of the filter member and upper case, and Fig. 3 is a pulverizer incorporated in the device that is an embodiment of the present invention. 4 to 6 are diagrams for explaining an example of a conventional device. 11... device (automatic coffee extraction device), 12
...Crushing section, 13...Extraction section, 14...Roasting section,
22...Rotary cutter, 23...Filter member, 26...Upper cover, 28...Pouring hole.

Claims (1)

[Scope of Claim for Utility Model Registration] A grinding section that grinds coffee beans loaded with a rotary cutter, and a grinding section into which the ground coffee beans are loaded by the rotational force of the rotary cutter, and hot water is poured from a pouring hole. In an automatic coffee extraction device comprising an extraction part for extracting ground coffee liquid, a plurality of scattering particles having a particle size substantially the same as or smaller than the particle size of the ground coffee beans are arranged on a plate-shaped substrate. An automatic coffee brewing device characterized in that a filter member having prevention holes formed in a uniform or non-uniform alignment is disposed above the pouring hole forming position of the brewing section.