JPH0440006B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an electric coffee brewer with a coffee bean grinding function.

Prior Art A fully automatic coffee brewer that has a conventional coffee bean grinding function and a dripping function, and which automatically switches to the dripping function after grinding coffee beans, is shown in Fig. 3. A device is known that performs grinding and dripping of beans in the same space. However, as shown in FIG. 3, the grinding of coffee beans and the filtration function of extracting the coffee liquid and separating the extract from the residue are performed in the same space. In the case equipped with the crushing filter chamber 1, the cutter 1a rotates at high speed and generates a large centrifugal force, so the paper filter normally used for extracting coffee cannot be used, and a mesh-like filter using stainless steel wire is used. things have been used. However, this method generates a lot of fine powder, which is unsuitable for coffee extraction, due to the high-speed grinding conditions in the closed space.
Furthermore, since a paper filter cannot be used, the extraction performance is poor and the extracted coffee liquid becomes cloudy due to the inclusion of fine powder.

In order to improve this, as shown in FIGS. 4 and 5, the raw material crushing chamber 2 and the filtration chamber 3 are separated, and the two are communicated with each other through the porous portion 4, so that the paper filter 5 can be Something that can be used is being considered.

The conventional example shown in FIG. 6 separates the raw material crushing chamber 6 and the filtration chamber 7, which has the same configuration as the conventional example shown in FIG. 4. Furthermore, the conventional example shown in FIG. By covering the upper end of the opening of the paper filter 9 with the frame 8, coffee powder is prevented from entering the gap between the paper filter 9 and the side wall of the filtration chamber 7.

Problems to be Solved by the Invention In the coffee boiler shown in FIGS. 4 and 5, coffee beans are ground in the raw material grinding chamber 2, and the coffee powder is set to pass through the holes in the porous portion 4. Once the particle size is reached, the particles are sequentially discharged from the pores of the porous section 4 to the filtration chamber 3. However, since there is a gap between the side wall of the filtration chamber 3 and the paper filter 5, the coffee powder discharged from the raw material grinding chamber 2 does not enter the inside of the paper filter 5. In order to prevent this, when setting the paper filter 5, it is necessary to align the paper filter 5 as closely as possible to the side wall of the filtration chamber 3, which makes it difficult to use when setting it. Furthermore, it has been impossible to completely prevent the particles from entering the gaps. Furthermore, in the conventional example shown in FIG. 6, the frame 8 is provided to prevent coffee powder from entering the gap between the side wall of the filtration chamber 7 and the paper filter 9, which increases the number of parts. As a result, during use, the increased number of parts increases the number of operations required to use the parts, and there are problems such as ease of losing them.

The present invention takes into account the above-mentioned conventional problems, and is a fully automatic coffee brewer that can use a paper filter.
When the coffee powder is discharged from the coffee bean grinding chamber to the filtration chamber, it is possible to reliably prevent the coffee powder from entering the gap between the side wall of the filtration chamber and the paper filter, and the number of parts increases, making it easier to operate. The purpose is to provide an electric coffee boiler that does not become complicated.

Means for Solving the Problems In order to solve the above problems, the present invention incorporates a cutter that is rotationally driven by a drive motor installed in the main body, and has a porous portion in a part of the cylindrical peripheral wall. A raw material crushing chamber and a filtration chamber arranged side by side so as to communicate with the raw material crushing chamber through a porous part are integrally formed. A facing extension part is integrally formed, and a recessed part is provided in the filtration chamber located below the extension part.

Effect With the above configuration, when setting the paper filter into the filtration chamber, lightly insert the paper filter from above the filtration chamber, and then use three or four fingers to push the end of the paper filter into the recess of the filtration chamber. The end of the paper filter can be easily and reliably attached to the lower part of the extended part of the raw material grinding chamber by pushing the paper filter into the coffee grinder. It is discharged from the porous portion of the grinding chamber, passes over the extending portion facing the center of the filtration chamber from the bottom edge of the porous portion, and is deposited directly inside the paper filter without falling to the outside of the paper filter. Furthermore, the number of parts after use can be reduced.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the accompanying drawings. In Figures 1 and 2, 10
is a main body, and this main body 10 has a structure in which a grinding filter container 11 for grinding coffee beans and extracting coffee liquid is removably housed in the upper part, and a drive motor 12 for grinding the coffee beans is built in the lower part. It's getting old. The main body 10 is also equipped with a timer 14 that automatically cuts off the power to the drive motor 12 and simultaneously starts the power to the heater 13 to start coffee extraction after the coffee beans are ground.

The pulverization and filtration container 11 includes a substantially cylindrical raw material pulverizing chamber 16 containing a cutter 15 that is rotationally driven by a drive motor 12, and a filtration chamber for storing and extracting the coffee beans pulverized in the raw material pulverizing chamber 16. 17 are assembled side by side,
The raw material crushing chamber 16 and the filtration chamber 17 communicate with each other via a porous portion 18 provided in a part of the peripheral wall of the raw material crushing chamber 16 . Further, the bottom part 19 of the raw material grinding chamber 16 is formed into a mortar shape, and the porous part 18 is arranged so as to cut a circle drawn by the peripheral wall of the raw material grinding chamber 16, so that when coffee beans are ground, the coffee beans is moderately stirred and pulverized evenly,
Once the particle size is suitable, it is immediately discharged to the filtration chamber.

In addition, a filtration chamber 1 is provided at the bottom edge of the communication part of the raw material crushing chamber 16.
The extension part 20 slopes downward so as to face the center of 7.
By providing this extended portion 20, when a paper filter (filter medium) 21 is placed in the filtration chamber 17, it is crushed in the raw material crushing chamber 16 and discharged from the porous portion 18. This prevents coffee powder from entering the gap between the paper filter 21 and the filtration chamber 17. A recess 22 provided in the filtration chamber 17 below the extension 20 is provided to facilitate insertion of the paper filter 21.

Coffee powder enters the gap between the paper filter 21 and the filtration chamber 17 through the extension 20 of the raw material grinding chamber 16.
However, when the coffee powder is discharged from the porous part 18 of the raw material grinding chamber 16, a small amount of coffee powder is liberated, and this small amount of coffee powder forms on the bottom edge of the porous part 18 of the raw material grinding chamber 16. Therefore, in one embodiment of the present invention, the lower surface of the lid 23 of the pulverized filtration container 11 on the filtration chamber 17 side is provided with a Rib 2 with a smaller diameter than the circle at the open end of the paper filter 21 set in the filtration chamber 17
4 to a height lower than the upper end of the opening of the set paper filter 21.

The operation in the above configuration will be explained. Remove the lid 23 and insert the paper filter 21 from above the opening of the filtration chamber 17. Then, use three or four fingers to push the paper filter 21 into the recess 22 of the filtration chamber 17, and then push the paper filter 21 into the porous part of the raw material crushing chamber 16. The extension part 20 formed on the bottom edge of 18 is set by going around the lower part. After that, the coffee beans are put into the raw material grinding chamber 16, and the cutter 1 is rotated by the drive motor 12.
5, at the same time as the coffee beans are ground, the coffee powder is discharged into the paper filter 21 set in the filtration chamber 17 through the porous portion 18 provided in a part of the peripheral wall of the raw material grinding chamber 16. When the discharge of the coffee powder to the paper filter 21 set in the filtration chamber 17 is completed, the timer 14 provided in the main body 10 causes the drive motor 12 to transfer the coffee powder to the heater 1.
3 is switched, and extraction of coffee liquid is automatically started.

In this way, according to this embodiment, the paper filter 2
1, lightly insert the paper filter 21 from above the opening of the filtration chamber 17, and push the end of the paper filter 21 into the recess 22 of the filtration chamber 17 to easily and reliably set the paper filter 21. The end portion can be attached below the extension portion 20, and due to the presence of the extension portion 20, when the coffee powder is discharged from the raw material grinding chamber 16 to the filtration chamber 17 through the porous portion 18, the filtration chamber 17 is It is also possible to prevent coffee powder from entering the gap between the side wall and the paper filter 21, and as a result, all discharged coffee powder enters the filtration chamber 17 uniformly. Furthermore, there is no need to increase the number of parts to prevent coffee powder from entering the gap between the filtration chamber 17 and the paper filter 21, and operability is improved, no parts are lost, and costs are reduced. It can also be provided at a low cost.

Effects of the Invention As described above, according to the present invention, there is provided a raw material crushing chamber which includes a built-in cutter that is rotatably driven by a drive motor installed in the main body, and which has a porous portion in a part of the cylindrical peripheral wall; The raw material crushing chamber has a filtration chamber arranged in parallel so as to communicate with the raw material crushing chamber through a porous portion, and an extending portion facing the center of the filtration chamber is integrally formed in the raw material crushing chamber from the bottom edge of the porous portion. , and a recess is provided in the filtration chamber located below this extension, making it possible to reliably prevent coffee powder from entering the gap between the filtration chamber and the paper filter. Therefore, the number of parts does not increase, and as a result, usability and productivity are improved. Furthermore, by setting the paper filter in the filtration chamber and lightly pushing the top of the filter with your finger, the paper filter can be easily positioned between the extension portion and the filtration chamber, making it extremely convenient to use.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of an electric coffee boiler showing an embodiment of the present invention, FIG. 2 is an exploded perspective view of the coffee boiler, and FIG. 3 is a cross-sectional view of a conventional coffee boiler. Fig. 4 is an exploded perspective view of another conventional coffee brewer, Fig. 5 is an exploded cross-sectional view of the main parts of the same coffee brewer, and Fig. 6 is an exploded perspective view of another conventional coffee brewer. FIG. 2 is an exploded cross-sectional view of the main parts of the vessel. 10...Main body, 11...Crushing filter container, 12...
... Drive motor, 15 ... Cutter, 16 ... Raw material crushing chamber, 17 ... Filtration chamber, 18 ... Porous section, 20
...extension part, 22... recessed part.

Claims (1)

[Claims] 1 A raw material crushing chamber containing a built-in cutter that is rotationally driven by a drive motor installed in the main body and having a porous portion in a part of the cylindrical peripheral wall, and communicates with this raw material crushing chamber via the porous portion. a filtration chamber for installing a paper filter in a removable manner, which are arranged in parallel, and are integrally formed, and an extension part facing the center of the filtration chamber from the bottom edge of the porous part is provided in the raw material crushing chamber, and this An electric coffee boiler that is located below the extension and has a recess in the filtration chamber.