JPS59203520A - Coffee mill - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] A coffee mill that grinds coffee using a rotationally driven cutter.
*Regarding a coffee mill that is fully equipped with a recovery device that classifies and captures defective components such as astringent skin and fine powder during coffee bean grinding.

The following conditions are generally known as conditions for fully extracting delicious coffee. Removes the astringent skin called silver skin that remains on some coffee beans. All fine powder generated during grinding is removed. Also, when it comes to crushing, is it powder? Try to prevent oxidation completely without heating 7J [l] as much as possible. Conventional coffee mills that are fully equipped with astringent skin and fine powder recovery devices include a system that takes full advantage of the centrifugal fan effect of the rotating cutter itself, but this system uses the cutter itself to grind the coffee beans and remove the coffee beans and coffee granules during the grinding process. There is a method in which air convection is applied due to the rotational movement of the astringent skin.

The present invention was developed to eliminate all of the above-mentioned drawbacks, and includes a centrifugal fan above the axis of the rotating body, a first space in which the entire rotating body is arranged, a second space above the first space, and a first space above the first space. A communication part that completely communicates with the first space and the second space is formed, this communication part faces the entire centrifugal fan, a classification space is provided above the first space, and an i-axis of the communication part between this classification space and the second space is provided. By placing it close to the core, the centrifugal fan located at the top, separate from the rotary cutter, has all the communication parts valved to create an optimal air convection r in the classification space, creating a space for grinding coffee beans. The classification space utilizes the centrifugal force generated by the two streams of rotating air at the top, and the air convection has good cooling efficiency for the coffee grounds.The centrifugal force also allows the coffee grounds to be separated into heavier particles outward, lighter particles inward, and smaller particles inward. Tsuku coffee powder and
Bad ingredients such as astringent skin and fine powder? Effectively classified and captured and recovered 2 times.

It is an object of the present invention to provide a device capable of grinding coffee beans in a good manner.

Embodiments of the present invention will be described below with reference to the drawings.

The structure of the embodiment is shown in FIGS. 1 to 7, and 1 is the main body of a drip type coffee maker. Internal VC of main body 1
A motor 2 is disposed, and the coffee mill main body 3 is configured to be removably attached above the motor 2. The coffee mill main body 3 is engaged with the substantially cylindrical wall 4 of the main body 1 and rotated detachably, and a motor shaft 5 and a camp ring 6 are connected to each other.
Motor 2 by suppressing the mill button 16 installed on the top
The rotation is transmitted to the coffee mill main body 3. The main body 1 also has a tank 8 for storing water 7, and when a switch 9 is operated, the coffee beans 40 stored in the coffee mill main body are ground, the water 7 is heated to boiling, and the water is spouted from the spout 10. It is. Is 11 coffee liquid?
12 is a coffee basket placed on top of the cup 11 to extract coffee. Note that the coffee mill main body 6 has a first space 17 entirely formed by the mill case 14 and the mill lid 15, and a cutter 1 to be described later is installed inside this first space 17.
9, and the second space 18 is entirely formed by the mill lid 15 and the lid case 16 which is fitted into the upper part of the mill lid 15 and is detachably provided. Also, in the first space 17, a rotary body 21 connected to the camp ring 6 is rotatably disposed, and a cutter 19 for completely crushing the coffee beans 40 is attached to the lower part of the two rotary body 21. A centrifugal fan 20, such as a turbo type fan, is provided above the center. A mill lid 15 is removably engaged with the upper part of the mill case 14, which has a generally circular cross section.
The lid case 16 is completely removably engaged with the upper part.

Further, the upper part of the mill lid 15 is in contact with the inside thereof through a ring-shaped step wall 22 and a one-cone butt wall 23, and is connected to a hole portion. An inner cylinder 26 is formed in the center of the back surface of the flat wall 24, and has a communicating hole 25 that connects the first space 17 and the second space 18. An outer cylinder 27 that opens into the first space 17 is entirely provided on the flat wall 24. Those inner cylinders26. A donut-shaped space A 28 that opens into the first space 17 is formed by the outer cylinder 21 and the flat wall 24Vc. Conical back wall 26 flat back wall 24. A B space 29 with a substantially trapezoidal cross section opens into the V first space 17 through the outer cylinder 27.
Furthermore, a C space 29' is formed in the upper part of the first space 17, which communicates with the B space 29, which is surrounded by the second step wall 22 and the mill lid 15 on the outside of the outer cylinder 27. Further, a hole 50i is provided in a part of the conical butt wall 23 to communicate with the plurality of B hollows 29 and the second space 18, and a plate-like wall 61 is provided in the lower part corresponding to the hole 6o. This plate-like wall 51 is an extension of the stepped wall 22 and is connected to the outer cylinder 27, and is connected to the B space 29.
and C space 29', and has the entire area corresponding to the large area from above the hole 30.

Note that the surface portion VC of the flat wall 24 is connected to the B space 29 and the communicating hole 2.
The slit-like holes 52 are fully connected and penetrate from the front surface to the back surface of the planar wall 24, and the slit-like holes 6
2, the A space 28 and the second space 18 are communicated with each other. Thus, a communication hole 25 is formed between the first space 17 and the second space 18. A series of communication portions 68 consisting of the null hole 62 and the hole 30 are constructed, and the first space 17 and the second space 18 are made to communicate with each other.

In addition, the entire wall 36 is provided on the outer circumferential portion of the upper surface of the mill lid 15, and a convex portion 64 is formed on a part of the outer circumferential surface of the wall 36.
A recess -35 is formed in a part of the lid case 16 corresponding to this position.
The lid cage 216 is placed on the top of the mill lid 15 as described above.
It is made by attaching them together in a removable manner. Furthermore, the communication portion 68? A centrifugal fan 20 such as a turbo type provided above the axis of the rotating body 21 is faced, and the upper surface filter 6 of the centrifugal fan 20 and the lower end 37 of the inner cylinder 26. In other words, the communication hole 25
They correspond to each other at the axial center and are arranged close to each other.

In this way, the A space 28 is formed above the first space 17 with the above configuration. B space 29. A classification space 39 consisting of a C space 29' is provided. Note that the connecting portion 38 between the classification space 69 and the second space 18 is arranged close to the axial center.

Based on the above configuration, the operation of this embodiment will be explained below. if
Coffee mill body experience Coffee beans 40 are put in, and the coffee mill body 3 is inserted into the body 1. Fully fill the tank 8 with water, turn the switch 9 to the purple mill display side, and the motor 2 will be energized for the time that the mill button 13 is pressed once, making one rotation and grinding 40 grams of coffee beans. As time passes, the astringent skin 42 and the fruit 41 of the coffee beans 40 shown in FIG. 6 separate and become finer. When you release the mill button 16, the power to Mo J-2 will stop. Transfer the coffee powder in the coffee mill body 6 to the Baskent 12, and turn the switch 9
When it is tilted to position J, a heater (not shown) is energized, water 7 becomes boiling water and drips through the spout hole 1o, coffee liquid is extracted from the coffee grounds in the bath kent 12 and stored in the crow cup 11. Here, the grinding of the coffee beans 4o will be explained in detail. Since the centrifugal fan 20 is positioned above the coffee beans 40 placed in the mill case 14 due to the rotation of the rotary body 21, the centrifugal fan 20 is positioned below the coffee beans 40 without directly stirring them, regardless of the amount of coffee beans 40. It is crushed by a cutter 19. Due to the centrifugal effect of the cutter 19, coffee beans 40, coffee powder, astringent skin 42
is rotated in the same direction as the rotational direction of the cutter 19 as shown in FIG. :Mo[, the grains rise along the inner wall surface of the mill case 14 as shown by the dotted arrow S, and the large grains fall down inside the mill case 14 on the way, while the small grains, light fine powder, and astringent skin 42 rise and fall to the stepped wall 22. It hits and falls in the same way. By repeating this process, the coffee beans 40 are completely crushed. At this time, when an air flow is generated in the first space 17 in the same direction as the rotational direction of the two rotors 21 due to the rotation of the centrifugal fan 20, it first flows from the second space 18 through the entire communication hole 25 to the first space. An air flow toward 17 is generated, and an air flow as shown by the solid arrow w1 in FIGS. 5 and 7 is generated. That is, the air flow is directed to the first space 17. A space 28, B space 29. The air flows in the same direction in each of the C spaces 29', and is sucked under negative pressure through the communication holes 25 by the centrifugal fan 20 located close to the upper surface 36i of the communication holes 25, thereby generating an air flow toward the first space 17.

Air convection occurs through the communication hole 25 of the inner cylinder 26, and the first space 17. C space 29', B space 29. Hole 50. 2nd sky 1
8. Air convection circulating in the order of communication hole 25 and A space 28
, slint-like hole 32. Air convection that circulates with the communication hole 25 occurs. If the former is the total first air convection and the latter is the second air convection, then each space 17, 18, 28, 29.

At 29', an air flow, a first air convection, and a second air convection are generated, both of which rotate in the same direction as the rotation direction of the rotating body 21. As described above, in the vicinity of the C space 29', the coffee powder rotates in the same direction as the rotation direction, while the relatively heavy and large coffee particles of the powder component are sorted toward the outer periphery, and the light fine powder and astringent components are sorted toward the center of the axis. To go. Therefore, what flows into the B space 29 VC from the C space 29' due to the first air convection is the air flow from the axial center communicating with the B space 29.
Therefore, light fine powder and defective components of the astringent skin 41 flow in, while heavy large particles do not flow in. First, the C space 29'
Classification is performed continuously between the space B and the space B 29.

Further, the B space 29 is located above the C space 29', and the conical butt wall 23 is formed to become narrower as it goes upward.
Classification action also works within the body.

The components contained in the first air convection flowing into the second space 18 are astringent skin 42. Only defective components such as fine powder flow in after classification. Other coffee powder remains in the first space 17. Since the first air convection that has entered the second space 18 is decelerated, the above-mentioned defective components adhere to and are captured on the upper surface of the mill lid 15 and the inner surface of the lid case 16, and only the air flow reaches the communication hole 25.
, and returns to the first space 17, and by repeating this process, all of the defective components are recovered. Also, from the A space 28, a slit-shaped 32
Since the components contained in the air flowing into the second space 18 through the second air convection are close to the axial center, the finest astringent skin 42. The air flow in the second space 18 is spread over the entire inner surface of the lid case 16, and the astringent skin 42 is made into a film-like air flow in the axial direction and the vertical direction.
．． The fine powder, etc., is tinged with static electricity when crushed, and the lid case 1
6. Adheres to the entire inner surface. Also, in the outer cylinder 27, the C space 29'
To form wo.

Air flow generated by centrifugal fan 20? This is to prevent the air from directly blowing out from the hole 30 into the second space 18, creating a gentle and smooth upward flow of air along the outer circumferential surface of the outer cylinder 27, and causing coffee particles, astringent skin, and fine powder to flow between the C walls 29'. Classification of? In addition to effectively preventing the coffee beans 40 blown away by the rotation of the cutter 19 or large granular coffee powder from entering the second space 18v directly from the hole 30 when they hit the centrifugal fan 20 and are blown away. What did you configure to make it? There is 1′. Therefore, the plate-like wall 6
1 is located below the hole 30, corresponds to the opening surface, and is provided so that the area almost corresponds to the entire area of the hole 30 from the top surface, and is parallel to the air convection in the B space 29, especially the rotating air flow. This prevents irregularly moving coffee beans 40 and granular powder from directly passing through the holes 30 and jumping into the second space 18 from within the first space 17 . After grinding all 40 coffee beans as described above, place the mill lid 15. The lid case 16 is removed from the mill case 14 at the same time to take out and use the particulate coffee powder inside the mill case 14, while the astringent skin 42. captured in the second space 18 is removed. Hamill lid with defective components such as fine powder 15. All you have to do is remove the mill case 14 and discard it. Note that the coffee powder being ground is cooled by air convection generated by the centrifugal fan 20.

According to the present invention, there is a first space which is coaxial with the two rotating bodies and in which the centrifugal fan and the two rotating bodies are all disposed above.

A second space formed above the first space, and a first space and a second space formed above the first space.
The communication part that fully communicates with the space plays the role of a centrifugal fan, and there is a classification space at the top of the space. By making the communication part that communicates with the 9-class space and the second space close to the axis, the centrifugal fan is placed above the communication part to create an optimal air convection and to improve the flow of coffee beans. The classification space utilizes the centrifugal force generated by the rotating airflow above the grinding space, and the air convection has good cooling efficiency for coffee powder, and the centrifugal force forces the coffee powder to become heavier particles outward and lighter and smaller particles inward. With fine particles, solid coffee powder.

Effectively classifies and captures defective components such as astringent skin and fine powder.

It has the effect of being able to recover and grind all the coffee beans in a good manner.

[Brief explanation of drawings]

Figure 1 shows a complete embodiment of the present invention, with the coffee mill fully installed.
Front view of drip coffee maker shown in cross section, 2nd
The figure is a cross-sectional view of the main parts of the same coffee mill. FIG. 6 is a sectional view of the main part of the coffee mill taken along the line x-x', and FIG. 4 is an exploded perspective view of the main part of the coffee mill. FIG. 5 is a top view of the mill lid of the coffee mill, and FIG. 6 is a sectional view of coffee beans used in the coffee mill. FIG. 7 is a sectional view of the main part of the coffee mill (explanation of convection). 17. First space. 18...Second space. 20...Centrifugal fan. 21 Rotating body. 68 Communication section. 59 - Classification space. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7

Claims (1)

[Claims] In a coffee mill equipped with a rotating body, the rotating body (2
1) A centrifugal fan (20) and two rotating bodies (2
1) Fully arranged first space (17) and first space (17)
A second space (18) is formed in the upper part, and a communication part (38) k that communicates the first space (17) and the second space (18) is formed, and this communication part (38) faces the entire centrifugal fan (20). The classification space (39) is completely provided above the first space (17), and the communication portion between the classification space (39) and the second space (18) <58) is located close to the center of the k-axis. A coffee mill.