JPS63206218A - Grinder - 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] Industrial applications The present invention relates to a grinder for grinding coffee beans.

Conventional technology In recent years, coffee is often sold through vending machines.
As a result, coffee beans were initially ground and sold on the spot, starting with instant coffee.

A conventional crusher used in such a vending machine will be explained with reference to FIGS. 3 to 5.

In the figure, 1 is the main body of the crusher, and 2 is the crushing chamber with an opening on the top.
has a circumferential inner wall 2', and a rotating tooth 4 passing through a rotating shaft 4° is arranged on the bottom surface. This rotary tooth 4 has an inner 92'
Rotating blades 5 are integrally provided with a space therebetween and inclined toward the inner v and 2' directions.

Further, the opening of the crushing chamber 2 has a fixed tooth 12 on the outer periphery with a threaded groove (
(not shown), and by adjusting the distance between the fixed teeth 12 and the rotating teeth 4, the particle size of the raw material can be changed. In the center of the fixed tooth 12, an input port 3 for inputting raw materials leading to the rotary tooth 4 is formed. Reference numeral 6 denotes a discharge passageway for discharging the powder crushed in the crushing chamber 2 to the outside, and is formed perpendicular to the rotational direction of the rotary blade 5 and to the inner wall 2'.

Reference numeral 7 denotes an opening on the main body side of the discharge passage 6, and a pipe 8 is connected to the discharge passage 6 to form the discharge passage 6. The inner surface of the discharge passage 6 has the same substantially circular cross section. Numeral 10 is a tooth 4 which rotates when a finger is inserted, which is interposed at the connection between the opening 7 and the tube 8.
This is a semi-circular plate that was installed to prevent people from getting injured.

With such a configuration, the raw material inputted through the input port 3 is crushed in the crushing chamber 2 and scattered onto the inner wall 2' by centrifugal force. The powder scattered in the discharge passage 6 is guided to the outside from the discharge passage 6 by the wind force generated by the rotary blade 5 which is coaxial with the rotary teeth 4 and rotates counterclockwise.

Problems to be Solved by the Invention However, in the conventional configuration as described above, when the powder passes through the discharge passage 6, it hits the EIA section of the inner wall 11, and the powder adheres and accumulates on this section A. Become. In addition, a retention portion B is also generated on the downstream side of the powder flow of the prevention plate 10. This means that when a vending machine dispenses a certain amount at a time to maintain a constant extraction degree, the taste changes and it is not possible to obtain a stable taste.

In view of the above-mentioned problems, the present invention provides a pulverizer that prevents powder from accumulating in the passage leading the powder from the pulverizing chamber to the outside.

Means for Solving Problem 1 In order to achieve this object, the crusher of the present invention is provided with a discharge passage for discharging the crushed powder from an inner wall from a crushing chamber equipped with rotating blades, and The discharge passage has an inlet opening to the inner wall and an outlet opening to the outside of the main body, and the passage from the inlet to the outlet is inclined in a direction that is not perpendicular to the inner wall in the direction of rotation of the rotating teeth. It is something.

Effect: With this configuration, when the pulverized powder passes through the discharge passage due to the wind force generated by the rotating blades, since the passage is inclined in the ventilation direction, it is prevented from adhering to and accumulating on the inner wall of the passage.

Embodiment Hereinafter, an embodiment of the present invention will be described with reference to FIG. 1. Structures that are the same as those of the prior art will be given the same reference numerals and detailed explanation thereof will be omitted.

Reference numeral 13 denotes a discharge body made of resin and having a discharge passage 14 . This discharge body 13 is opened by inserting one end into a hole 15 formed in the inner wall 2' of the crushing chamber 2 of the main body.
6 and an outlet part 17 that opens to the outside of the main body, a passage 14 is formed by an inclined part 18 inclined in a direction not perpendicular to the inner wall 20 in the direction of rotation of the rotary teeth, and a straight part 19 which is straight thereafter. Further, the discharge body 13 is attached to the main body with a screw N.

As a result, the powder pushed out by the rotating blades 5 is discharged in the direction a in the figure by the wind force generated by the rotation of the blades 5. Here, since the inclined portion 18 is inclined in the same direction as the direction a, powder is less likely to adhere to the inner wall 20 of the discharge passage 14. In addition, although the flow of powder changes from the slope part 18 to the straight part 19, by keeping the cross section almost the same (tolomm2 or less), the wind speed and pressure loss are reduced, so even if it adheres to the inner wall, it can be blown away by wind power. Therefore, there is no possibility that the powder will remain in the passage 14 and a constant amount of powder cannot be supplied.

The table below shows a comparison of the inclination angle and passage diameter of the present invention with the conventional one.

Further, as a second embodiment, referring to FIG. 2, it will be explained as follows.
Reference numeral 21 denotes a discharge passage 21 which discharges the crushed powder from the grinding chamber through the inner wall 2', which is formed on the wall of the main body forming the grinding chamber 2, and includes an inlet section 22 that opens into the inner wall 2' and an outlet that opens to the outside of the main body. The position of the portion 23 is inclined in a direction that is not perpendicular to the inner wall in the rotation direction of the rotating teeth. Further, a tube 25 having a linear passage 24 is attached to the outlet portion 23 of the main body with screws N. Even in such a configuration, the same effects as in the first embodiment can be obtained.

Effects of the Invention As is clear from the above embodiments, when the pulverized powder passes through the discharge passage due to the wind force generated by the rotating blades, the passage is inclined in the direction of ventilation, so it adheres to the inner wall of the passage and causes the ground to accumulate. A constant amount of powder can be reliably supplied. Therefore, even when applied to places such as vending machines where coffee beans are crushed and extracted during sale, the taste of the coffee remains constant and no quality problems occur.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a crusher showing an embodiment of the present invention;
FIG. 2 is a cross-sectional view showing a second embodiment of the present invention, FIG. 3 is a perspective view of a conventional crusher, FIG. 4 is a vertical cross-sectional view of FIG. 3, and FIG. FIG. 2...Crushing chamber, 2'...Inner wall, 4...
... Rotating tooth 12 ... Fixed tooth, 14.21.
...Discharge passage. The name of the agent is patent attorney Toshio Tsuchinakao! 3-Discharge body No. 11! 114-Discharge passage 15- Work! 6''' Input part Fig. 3 Fig. 4

Claims (1)

[Scope of Claims] 1) A grinding chamber including a fixed tooth, a rotating tooth driven by a motor, a circumferential inner wall that accommodates both of the teeth and crushes the raw material, and a grinding chamber that is located on the outer periphery of the rotating tooth and has a circumferential inner wall for accommodating the teeth and crushing the raw material. A rotary blade positioned between the inner wall and the rotary teeth, and a discharge passage for discharging the crushed powder from the crushing chamber from the inner wall, the discharge passage comprising:
A pulverizer having an inlet opening to an inner wall and an outlet opening to the outside of the main body, the passage leading from the inlet to the outlet being inclined in a direction that is not perpendicular to the inner wall in the direction of rotation of rotating teeth. 2) The pulverizer according to claim 1, wherein the discharge passage is approximately circular and has a diameter of 110 mm^2 or less.