JPS6342907Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a coffee mill that grinds coffee beans placed in a mill case using a rotatably driven cutter, and in particular removes unnecessary defective components from coffee beans during grinding of the coffee beans. Regarding mill.

It is generally accepted that using freshly ground coffee powder is necessary to extract delicious coffee, but in order to improve the taste, it is necessary to use freshly ground coffee powder to extract delicious coffee. It is essential for Sato to remove unnecessary and defective components.

In particular, the astringent skin called silver skin, which is a component of coffee beans, and the fine powder produced by grinding impair the original taste of coffee, so in so-called specialty shops, this astringent skin and fine powder are removed. There are even some places where coffee liquid is extracted.

However, in conventional coffee mills used in households, the entire coffee bean is ground at once, so the astringent skin and fine powder are uniformly mixed into the ground coffee powder.
Separation after crushing was extremely difficult and troublesome.

Therefore, in view of the above-mentioned conventional circumstances, the present invention is designed to convey astringent skin and fine powder to the partitioned space in the mill case using the air flow generated by the centrifugal fan effect of the rotating cutter itself during coffee bean grinding. The configuration allows the defective components to be easily and reliably removed, and the removed defective components can be easily disposed of and cleaned by making part of the wall of the partition space openable and closable. It provides a coffee grinder made with

Hereinafter, one embodiment of the present invention will be described based on FIGS. 1 to 4.

1 to 3, reference numeral 1 denotes a motor case with a built-in motor 2 for rotationally driving a cutter for grinding coffee beans, which will be described later, and a cutter 4 for grinding coffee beans is installed on this motor case 1. A mill case 3 is removably placed thereon, and the rotation of the motor 2 is transmitted to the cutter 4 by couplings 6 and 6'. 7 is a mill lid that removably fits into the mill case 3, and inside this mill lid 7, this and the mill case 3
A partition plate 8 that partitions the space formed by the above into chamber A and chamber B is removably attached.

A central communication hole K is provided in the center of the partition plate 8 to communicate the chambers A and B, and an annular wall 14 projecting upward is provided at the periphery of the communication hole K on the chamber A side. Further, the periphery of the communication hole K on the chamber B side extends downward to form a cylinder 9, and faces directly above the cutter 4.

On the chamber B side of the partition plate 8, there is a cutter 4 shown in Fig. 2C.
A guide 10 is provided that curves from the outer periphery toward the center according to the rotational direction shown in FIG. . Furthermore, this communication hole H has a chamber B in the opposite direction to the direction of rotation of the cutter 4.
A shielding guide 11 that guides an air flow to be described later from the chamber A to the chamber A is bent downward.

On the other hand, reference numeral 5 denotes a blade wheel formed downwardly on a part of the cutter 4, which effectively creates an air flow upward in the chamber B when the cutter 4 rotates. Reference numeral 15 denotes a lid-like wall that is attached to a part of the mill lid 7, which is a component forming the chamber A, so as to be openable and closable, and can be opened and closed from the outside using a knob 16.

Next, the coffee bean grinding process and defective component removal process of the coffee mill having the above configuration will be explained.

First, put the coffee beans into the mill case 3,
After each part is set as shown in FIG. 1, the motor 2 is energized and the cutter 4 is rotated at high speed, and the coffee beans are ground by the cutter 4. When grinding begins, the astringent skin 12 and the fruit 13 of the coffee beans shown in FIG. 4 separate, and both become thinner as time passes.

The airflow created by the centrifugal fan effect of the impeller 5 as the cutter 4 rotates occurs as shown by arrows P and Q in the figure.

That is, the coffee beans in the grinding process rotate in the space B in the same direction as the rotational direction C of the cutter 4 while colliding with the guide 10.

When the extremely light astringent skin and fine powder of the fruit reach the end E of the guide 10, they are changed direction by the airflow flowing from the chamber B to the chamber A through the peripheral communication hole H, and are directed into the chamber A. brought in. The airflow that has flowed into the chamber A returns to the chamber B through the central communication hole K of the partition plate 8, forming a circulating flow, but the airflow after passing through the peripheral communication hole H is decelerated and Due to the annular wall 14 around the communication hole K, defective components such as astringent skin are deposited in chamber A without returning to chamber B. Therefore, defective components are continuously transferred to chamber A during operation, that is, while grinding coffee beans. Can be captured separately.

Even when the large particulate coffee powder required for extracting the coffee liquid reaches the end E of the guide 10, its inertia causes it to continue moving in the same direction as the rotation of the cutter 4, and is carried into the chamber A by the air flow. It is not washed away and is deposited at the bottom of chamber B.

After grinding the coffee beans as described above, the mill lid 7 is removed from the mill case 3, and the particulate coffee powder in the mill case 3 is taken out and used. On the other hand, the defective ingredients such as astringent skin and fine powder captured in the chamber B may be disposed of by removing the partition plate 8 from inside the mill lid 7.
5 by the knob 16 and opened outward, and can be easily thrown away and cleaned without removing the partition plate 8. That is, in normal use, the lid-like wall 15 is opened and closed to dispose of defective components and cleaned, and the partition plate 8 may be removed from time to time for cleaning and other careful maintenance.

According to the above configuration, when coffee beans are ground, the astringent skin and fine powder of the coffee beans can be efficiently separated and captured by the air flow generated by the rotation of the cutter 4 into the chamber A serving as a partitioned space, which improves the deliciousness of the coffee. Because it can remove unnecessary bad components,
The taste of the coffee can be further improved, and in particular, the difficult and troublesome work of removing defective components from the ground coffee powder is not necessary, and the separated and captured defective components can be removed by opening and closing a part of chamber A from the outside. It is very easy to operate, dispose of, and clean.

According to this embodiment, the central communication hole K is configured to open directly above the cutter 4 through the cylinder 9 with respect to the chamber B, so that the centrifugal fan effect of the impeller 5 can be greatly enhanced. In addition, since a shielding guide 11 is provided below the peripheral communication hole H of the partition plate 8, the cutter 4
Also, the coffee particles blown away by the impeller 5 do not directly jump into the chamber A, and the air flow from the chamber B to the chamber A through the communication hole H can be made smooth, thereby eliminating defective components. can be captured efficiently. Furthermore, since the coffee beans in the chamber B are stirred by the guide 10 from the outside toward the center, there is also the effect that the coffee beans are ground uniformly.

The embodiments clarified by the above explanation do not indicate any structural limitations of the present invention, and in short, the present invention has a mill case that is separated from the cutter installation space by a partition wall, and that the space is connected to the cutter installation space. Any structure is sufficient as long as it forms a space that can be communicated with, and a part of the wall of the space can be opened and closed by external operation.The cutter also does not have a blade wheel, and the cutter itself uses a centrifugal fan effect to separate the partitioned space. Any configuration is sufficient as long as the defective components are sent to and separated and captured.

As explained above, the present invention provides a space in the coffee mill that is separated from the cutter installation space, and uses the centrifugal fan effect of the cutter that rotates during coffee grinding to cause the astringent skin and fine powder in the coffee beans to be stored in this space. In addition to sending out the defective components to separate and capture them, a part of this space can be opened and closed from the outside, so the defective components can be easily and reliably removed, and furthermore, they can be easily disposed of and cleaned. can be done,
The convenience is extremely high.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view showing the structure of the coffee mill according to the present invention, Fig. 2 is an exploded perspective view of the same coffee mill, Fig. 3 is a plan view of the partition plate in the above coffee mill, and Fig. 4 is It is a cross-sectional diagram of coffee beans. 3... Mill case, 4... Cutter, 7... Mill lid, 8... Partition plate, 15... Lid-like wall, A...
Room (partition space), B...room (cutter installation space),
H, K...Communication hole.

Claims (1)

[Scope of utility model registration request] A space is formed in the mill case, which is separated from the coffee bean grinding cutter installation space by a partition wall and is provided in communication with the space, and the partitioned space is used to capture defective components of the coffee beans when the coffee beans are ground. What is claimed is: 1. A coffee mill having a space in which the partition space is formed, wherein a part other than the partition wall forming the partition space is constructed with a lid-like wall that can be freely opened and closed.