JPS5816353Y2 - "Ko-" "Hi-" manufacturing machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a coffee making machine in which a main body case is provided with a mill container equipped with a cutter for grinding coffee beans and a filter for applying a coffee liquid source.

This type of conventional coffee making machine grinds coffee beans using a cutter placed inside a mill container, and receives the ground coffee powder by a flat filter placed at the bottom of the mill container. It is configured to extract coffee liquid by pouring hot water.

However, according to such a configuration, when the amount of coffee beans is relatively small, the re-ground and re-ground coffee powder is mainly deposited on the outer circumferential side of the filter due to the centrifugal force of the cutter, and when pouring, Since hot water is often injected into the inside of the filter rather than the outer periphery, there is a problem that the hot water does not pass through the coffee grounds and only a thin coffee liquid is obtained.Also, when there are relatively large amounts of coffee beans, Since the coffee powder was deposited in a thick layer on the filter, it was difficult for the hot water to pass through the coffee powder, which not only took a long time to extract the coffee liquid, but also caused the hot water to overflow from the top of the mill container.

The present invention was developed in view of the above circumstances, and its purpose is to allow hot water to pass through the coffee powder effectively when there is a relatively small amount of coffee beans, extract a delicious coffee liquid, and to extract a delicious coffee liquid. To provide a coffee making machine capable of extracting coffee liquid in a relatively short time when a relatively large amount is used and free from problems such as overflow of hot water.

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

Reference numeral 1 denotes a main body case, which has a motor storage chamber 3 formed above the left half of the flat base portion 2 in the figure, and a storage chamber 5 surrounded by a wall 4 above the motor storage chamber 3. is formed therein, and a water storage tank 6 is further formed on the right side of the storage chamber 5, that is, above the right half of the base portion 2.

The bottom of the storage chamber 5 has a slope that gradually descends toward the right end, and a hole 7 is formed at the lowest part of the slope, and a bearing hole 8 is formed approximately in the center of the bottom.

Reference numeral 9 denotes a drive motor, which is disposed within the motor storage chamber 3 such that the rotating shaft 10 projects into the storage chamber 5 through the bearing hole 8.

Note that 11 is a seal, which is held between the bearing hole 8 and the rotating shaft 10 by a support 12 provided on the upper surface of the drive motor 9 so as to seal the space therebetween.

Reference numeral 13 designates a mill container in which a substantially inverted conical bottom wall portion 15 is integrally molded into the lower opening of a cylindrical peripheral wall portion 14, and a shaft insertion tube 16 is formed protruding approximately at the center of the bottom wall portion 15. A large number of liquid passage ports 17 are formed in a portion other than the shaft insertion tube 16, and a filter 18 having a substantially inverted conical shape similar to the bottom wall portion 15 is mounted on the entire surface of the portion.

A cutter 19 is housed in the mill container 13, and the cutter 19 has a slope that gradually rises toward the outer periphery, and the tip thereof is directed upward. A portion 20 is positioned within the shaft insertion tube 16.

Thus, such a mill container 13 is stored in the storage chamber 5, and when this is stored, the boss portion 20 in the shaft insertion tube 16 can rotate integrally with the penetrating protruding end of the rotating shaft 10 of the drive motor 9. Thus, the cutter 19 is directly connected to the rotating shaft 10.

Reference numeral 21 denotes a receiver, the bottom of which forms an inclined surface along the bottom of the storage chamber 5, a discharge port 22 is formed at the lowest part of the receiver, and a shaft insertion tube 23 is formed as a protrusion approximately in the center. has been done.

Thus, such a receiver 21 is fitted into the fitting protrusion 15a of the bottom wall portion 15 of the mill container 13 before being stored.
3 is housed in the storage chamber 5, and thus the receiver 21 is located between the bottom wall 15 of the mill container 13 and the bottom of the storage chamber 5.

In this state, the discharge port 22 faces the outside of the storage chamber 5 through the hole 7, and a water-shielding tube 20a formed on the outer periphery of the flat end of the boss portion 20 is located on the outer periphery of the shaft insertion tube 23. ing.

Incidentally, 24 is a reservoir placed on the upper surface of the right half of the base portion 2 of the main body case 1, and its mouth is located below the discharge port 22.

Reference numeral 25 denotes a discharge pipe of the water heater, which is located above the mill container 13 . It has a structure in which hot water is heated by a heater provided inside the half, and then hot water is discharged from the discharge pipe 25.

26 is a lid provided on the top of the mill container 13.

Next, to explain the operation of the above configuration, first, the mill container 1
When the drive motor 9 is started after coffee beans are housed in the container 3, the rotary shaft 10 and the cutter 19 rotate, and the coffee beans are ground into coffee powder.

At this time, if the amount of coffee beans is small, even if the coffee powder crushed by the cutter 19 is scattered toward the outer circumference due to the centrifugal force of the rotation of the cutter 19, it is not attached to the bottom wall 15 of the mill container 13. Since the filter 18 has a substantially inverted conical shape, the coffee powder is transferred to the center of the filter 18 (the cutter 19
When there is a large amount of coffee beans, the coffee powder initially accumulates at the center of the filter 18, as in the case of a small amount, and then It gradually begins to accumulate toward the outer circumference.

When this crushing operation is completed, the drive motor 9 is stopped and the heater of the hot water supply device is made to generate heat.

Then, the water in the water storage tank 6 is turned into hot water and discharged into the discharge pipe 25.
The molten metal is discharged into the mill container 13 through the pouring hole 26 a of the lid 26 .

The hot water then penetrates into the coffee powder and becomes coffee liquid, which is filtered by the filter 18 and passed through the liquid passage port 17.
drip through.

This coffee liquid is received by the receiver 21, drips along the bottom of the receiver 21 from the discharge port 22 into the reservoir receiver 24, and is stored there.

As described above, according to this embodiment, the bottom wall portion 1 of the mill container 13
5 and the filter 18 attached thereto are formed into a substantially inverted conical shape, so that when the coffee beans are in a relatively small amount, the cutter 19
A relatively large amount of ground coffee powder is accumulated in the center of the filter 18 than in the outer periphery of the filter 18, and is therefore discharged from the discharge pipe 25 through the pouring hole 26a of the lid 26 to the center. The hot water, which tends to be supplied in large quantities, is effectively permeated into the coffee powder, making it possible to produce a coffee liquid that is more delicious than before. The pulverized coffee powder is first accumulated in the center of the filter 18, and then sequentially deposited on the outer periphery. Compared to a filter, the contact area with the coffee powder is larger, so it does not form a very thick layer, so hot water passes through the coffee powder more easily than in the past, and it takes longer to extract the coffee liquid. There is no possibility that hot water will overflow from the top of the mill container 13.

By the way, in the past, in order to obtain a large capacity for grinding and extracting a large amount of coffee beans, the diameter of the mill container was increased, and the diameter of the filter was accordingly increased to increase the contact area with the coffee powder. However, in this embodiment, the bottom wall 15 of the mill container 13 and the filter 18 are inclined in a substantially inverted conical shape to increase the contact area between the filter 18 and the coffee powder. , the shape and diameter of the mill container are the same, and the capacity can be increased by changing only the height. Cutter 19. Receiver 2
1 and the lid 26, etc., can be standardized without requiring any changes, and parts manufacturing can be unified and manufactured at low cost.

It should be noted that the present invention is not limited to the embodiments described above and shown in the drawings, but can be implemented with various modifications without departing from the spirit of the invention.

As explained above, in the present invention, when the amount of coffee beans is relatively small, hot water can effectively pass through the coffee powder and extract delicious coffee liquid, and when the amount of coffee beans is relatively large, it is possible to extract a delicious coffee liquid. To provide a coffee making machine capable of extracting coffee liquid in a relatively short time and free from problems such as overflow of hot water.

[Brief explanation of the drawing]

The drawing is a longitudinal sectional side view showing an embodiment of the present invention. In the drawings, 1 is a main body case, 9 is a drive motor, 13 is a mill container, 18 is a filter, and 19 is a cutter.

Claims (1)

[Scope of utility model registration request] A mill container provided in the main body case, a cutter provided in the mill container and rotated by a drive motor to crush coffee beans, and a cutter provided in the mill container to receive the coffee powder pulverized by the cutter. A coffee making machine equipped with an inverted conical filter.