JPS59203519A - 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 The present invention relates to a coffee mill that grinds coffee beans placed in a mill case using a rotationally driven cuckoo. This invention relates to a coffee mill equipped with a recovery device for

The conditions for extracting better tasting coffee than ever before are generally known as follows. The astringent skin called Norber skin that remains on some of the coffee beans is removed. Removes fine powder produced during grinding. In addition, when crushing, the powder should be heated as little as possible to prevent oxidation. Conventionally, this coffee mill is equipped with an astringent peel and fine powder recovery device.

There is a method that applies the centrifugal 77/ effect of the rotating cutter itself, but this method uses the cutter itself to grind the coffee beans and the air convection that accompanies the rotational movement of the coffee beans and coffee grains during the grinding process. However, there was a drawback that it was not possible to efficiently collect astringent skin and fine powder.

The present invention has been made to eliminate the above-mentioned drawbacks, and includes a turbo centrifugal fan above the axis of a two-rotating body.

forming a first space in which the rotating body is disposed, a second space above the first space, and a communication portion that communicates the first space and the second space;
This communication part should be facing the turbo-type far-L type ann, and the first
By providing a classification space in the upper part of the space, apart from the single-rotating cutter, the turbo-type remote fan placed in the upper part creates optimal air convection through the communication part, and the coffee beans are separated. This is a classification space that applies the centrifugal force generated by the rotating air flow in the first part of the grinding space, and the air convection has good cooling efficiency for the coffee powder. Light and small particles in the direction.

In other words, the object is to provide a device that can effectively classify and capture coffee powder and defective components such as astringent skin and fine powder, and can grind 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. A motor 2 is disposed inside the main body 1, and the coffee mill main body 3 is configured to be detachably attached to three sides of the motor 2. The coffee mill main body 3I'i is fixed to the substantially cylindrical wall 4 of the main body 1 in a removable manner, and the motor/
The gift 5 and the coupling 6 are connected so that the rotation of the motor 2 is transmitted to the coffee mill body 6 by the pressure of the mill button 1 attached to the upper part of the coffee mill body 3. The main body 1 also has a tank 8 containing water 7, and by operating a switch 9, the coffee beans 40 stored in the coffee mill main body are crushed and the water 7 is heated and boiled.
It spouts out from the spout 10. 11 is a cup that receives the coffee liquid.

12 is a coffee basket that is placed on the soil of cup 11 to extract coffee. Note that the coffee mill main body 6
A first space 17 is formed by the mill case 14, the mill, and the lid 15, and a cutter 19, which will be described later, is installed inside the first space 17. A second space 18 is formed by the lid case 16. A rotary body 21 connected to the coupling 6 is rotatably arranged in the first space 17.
A cutter 19 for crushing coffee beans 40 is attached to the lower part of the rotary body 21, and a turbo-shaped cutter 19 is attached to the upper part of the coaxial center with the rotating body 21.
A second fan 720 is provided. In addition, this centrifugal type 7
7 and 20 are coffee beans 4 stored in the mill case 14;
It is provided so that it is located above 0. A mill lid 15 is mounted on the upper part of the mill case 14 having the above-mentioned approximately circular cross section.
are removably engaged with each other, and a lid case 16 is removably engaged with the upper part of the mill lid 15. Further, the upper part of the mill lid 15 is in contact with the inner side and has a central portion formed by a flat wall 24 with an annular step wall 22 and a two-cone butt wall 23 interposed therebetween.

An inner cylinder 26 having a communication hole 25 communicating with the first space 17 and the second space 18 is formed protrudingly in the center of the back surface of the lower wall 24, and the outer peripheral part of the inner cylinder 26 is connected to the flat wall 24. 1st
An outer circular section 27 opening into the space 17 is provided.

Those inner cylinders26. The outer cylinder 27 and the flat wall 24 create a first space i;' VC-opening donut-shaped space A 2
8 was formed. Conical buttress 20. - Flat wall 24. The outer cylinder 27 forms a B space 29 with a substantially trapezoidal cross section that opens into the first space 17, and the upper part of the first space 17 is surrounded by the step wall 22 and the mill fc 15 on the outside of the outer cylinder 27. A C space 29' communicating with the B space 29 is formed. Furthermore, a plurality of B spaces 29 are provided in a part of the conical buttress 26.
A hole 60 is provided that communicates with the second space 18, and a plate-like wall 61 is provided at a lower portion corresponding to the hole 60. plate-like wall 5 with
1 is an extended surface of the step wall 22, connected to the outer cylinder 27, located at the boundary between the B space 29 and the C'Z space 29', and the hole 60
This is the area corresponding to the large area seen from above. In addition, there is a B space 29 and a communication hole 2 on the surface of the striking plate buttress 24.
A slit-shaped hole 2 is provided which connects the two spaces and extends through the front and back surfaces of the flat wall 24, and this slit-shaped hole 32 connects the A space 28 and the second space 18. . Thus, a communication hole 25 is formed between the first space 17 and the second space 18. A series of communication parts 38 consisting of the slit-like holes 32 and the holes 60 are configured, and the first space 17 and the second space 114
'] 1B is connected. Nao Mil Fuda 15
A wall 33 is provided on the outer periphery of the upper surface.

A convex portion 54 is formed on a part of the outer peripheral surface of the wall 66, and a concave portion 35 is provided on a part of the lid case 16 corresponding to this position,
As mentioned above, the lid case 16 is removably attached to the upper part of the mill flange 15. Furthermore, the communication portion 68
facing the turbo centrifugal fan 20 provided above the axial center of the rotating body 21, and the upper surface 36 of the centrifugal 77 fan 20 and the lower end 67 of the inner cylinder 26, that is, the communication hole 25, are aligned axially with each other. They correspond to each other and are arranged close to each other. In this way, A is formed in the upper part of the first space 17 with the above structure.
Space 28. B space 29. Classification space 3 consisting of C space 29'
9.

The operation of this embodiment based on the above configuration will be explained below. if
Coffee beans 40 are put into the coffee mill main body filter, and the coffee mill main body 6 is set in the main body 1.

Water 7 is poured into a tank 8, a switch 9 is turned to the mill display side, and the motor 2 is energized and rotates once for only the time that the mill button 16 is pressed, thereby grinding coffee beans 40. 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 the mill button 13 is released, the power supply to the motor and motor 2 is stopped. Transfer the coffee grounds in the coffee mill body 3 to the basket 12 and turn the switch 9 to the drip side to energize the heater (not shown), causing the water 7 to turn into boiling water and drip from the spout hole 10, causing the water inside the basket 12 to flow. Coffee powder and coffee liquid are extracted and stored in a cup 11. Here, the grinding of the coffee beans 40 will be explained in detail. Due to the rotation of the rotating body 21, the centrifugal fan 20 rotates the coffee beans 4 placed in the mill case 14.
Since the cutter 19 is located at the bottom, it is crushed by the cutter 19 located at the bottom. Due to the far Cr effect of the cutter 19, the coffee beans 40 and coffee powder/astringency 42 rotate in four directions along the rotational direction of the cutter 19 as shown in FIG. The grains rise as shown by the arrow S, and fall downward in the mill case 14 midway through the large 'H' direction, and small grains, light fine powder, and astringent skin 42 rise, hit the step wall 22, and fall in the same way. By repeating this process, the coffee beans 40 are completely crushed.

At this time, as the centrifugal fan rotates 200 times, an air flow is generated in the first space 17 in the same direction as the rotational direction of the four-rotator 21.

From the second space 18 to the first space 17 through the communication hole 25
An air flow is generated toward the solid line arrow W in FIGS.
An air flow as shown in is generated. That is, the airflow is the first
The flow flows in the same direction in space 17, A space 2B, B space 29, and C purple space 29', and negative pressure is sucked through the communication hole 25 ((by the centrifugal fan 20 located close to the top surface 66). An air flow toward the first space 17 is generated, and the inner cylinder 26
Air convection occurs through the communication hole 25.

Air convection circulates in the order of first space 17#C space 29', B space 29, hole 60, second space 18, and communication hole 25,
Air convection circulates between the space 28, the slit hole 32, and the communication hole 25. If the former is the first air convection and the latter is the second air convection, each space 17.18.28.29.29
', 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 C space 29'.

While the coffee powder rotates in the same direction as the rotation direction, relatively heavy and large coffee particles of the powder component are sorted toward the outer periphery, and light fine powder and astringent skin components are sorted toward the center of the shaft. Therefore, what flows from the C space 2g into the B space 29 due to the first air convection is the air flow from the shaft center part communicating with the B space 29, and as a result, light fine powder and defective components of the astringent skin 41 flow in. As long as heavy and large particles do not flow in, classification is first performed continuously between the C space 29' and the B space 29. Further B
Since the space 29 is located above the C space 29', the classification effect and the conical butt wall 23 are formed so as to become narrower as they go upward, so that the classification effect also works in the B space 29, and the second Among the components contained in the first air convection flowing into the space 18, only defective components such as astringent skin 42 and fine powder are classified and flowed in. Other coffee powder is in the first space 1
7. 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 passes through the communication hole 25 and enters the first space 17. By repeating this process, the defective components are recovered. Also, A space 28
The second air convection is caused by the second air convection through the slit-like hole 62.
The components contained in the air flowing into the space 18 are close to the axial center.

It contains the finest astringent skin 42, fine powder, etc., and is 2 inches in the axial direction.

The second space 1 is created by creating a film-like air flow in the vertical direction of the tab
The air flow inside the lid case 16 is spread over the entire inner surface of the lid case 16, and the astringent skin 42, fine powder, etc. are still charged with static electricity during the grinding and stick to the entire inside surface of the lid case 16.

The outer cylinder 27 forms the C space 29'.
The airflow generated by the Cr type fan 20 should not be directly blown out into the second space 18 from the hole 60, but should be allowed to flow gently and smoothly upward along the outer circumferential surface of the outer cylinder 27. In addition to effectively classifying the coffee grains and astringent skin/fine powder in the C space 29', the coffee beans 40 or large granular coffee powder blown away by the rotation of the cutter 19 are removed from the fan 20. The structure is such that when it is blown away, it does not directly enter the second space 18 through the hole 50.

This plate-shaped wall 31 is located below the hole 60, corresponds to the opening surface, and is provided so that the area from the top surface almost corresponds to the area of the hole 30, and is used to prevent air convection in the B space 29, especially rotation. Place the reed parallel to the air flow.

This prevents coffee beans 40 and granular powder that move irregularly from inside the first space 17 from directly passing through the hole 0 and jumping into the second space 18. After grinding the coffee beans 40 as described above, the mill lid 15 and lid case 16 are removed from the mill case 14 at the same time, and the particulate coffee powder inside the mill case 14 is taken out and used. 2. The defective components such as astringent skin 42 and fine powder captured in the space 18 are removed from the mill lid 15. The mill case 14 can be removed and discarded. Note that the coffee powder being ground is cooled by air convection generated by the centrifugal fan 20.

According to the present invention, a turbo type telescope I installed on the upper part of a rotating body
By placing this turbo-type fan in the communication section, and by providing a classification space in the first part of the first air, it was positioned at the top separately from the seven-rotation cutter. Optimal air convection is achieved through a turbo type fan through a communication part, and the classification space is created by applying the force of the rotating air flow above the coffee bean grinding space.
The cooling efficiency of the coffee powder due to air convection is also good and prevents oxidation.Due to the centrifugal force, the coffee powder becomes heavier particles toward the outside, and lighter and smaller particles toward the center, that is, coffee powder.

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

It has the effect of being able to be recovered and grinding coffee beans in a good manner.

[Brief explanation of drawings]

FIG. 1 shows an embodiment of the present invention, in which a coffee grinder is installed.
Front view of drip coffee maker shown in cross section 1-1
Figure 2 is a cross-sectional view of the main parts of the coffee mill. Figure 6 is a cross section m1 of the main part of the same coffee mill.
4 are exploded perspective views of essential parts of the same 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... Far ICr fan, 21... Rotating body. 38...Communication part, 39...Classification space. Applicant: Hitachi Thermal Equipment Co., Ltd. Figure 2 Figure 3 Figure 4 @ 3, 2 Figure 5 Figure 6 Figure 7

Claims (1)

[Claims] In a coffee mill equipped with a rotating body, the rotating body 3I
) with a turbo-type centrifugal fan in the shaft core. A first space σno in which the rotating body Cυ is arranged, a second space θ8) above the first space αη, a first space αno and a second space α8)
7. This communication part (to) is made to face the turbo centrifugal fan (a), and the first space α
Coffee mill 0 characterized by having a classification space in the upper part of the nozzle.