JPH04348722A - Coffee manufacturing machine - Google Patents

Abstract

PURPOSE:To evenly and uniformly pulverize coffee beans in a mill case, and also, to automatically execute the cleaning in the mill case, and to reduce the installation space of a main body. CONSTITUTION:On the upper part of a main body 1, a mill case 18 is provided, and also, in this mill case 18, a pulverizing body 22 of a horizontal shaft type is provided. Moreover, in the lower part of the mill case 18, a coffee extracting part 31, a bottle 7 and a hot water generating mechanism 6 are placed in one vertical line, and coffee powder which drops down from a passing hole 24 of the lower part of the mill case at the time of milling is received by the coffee extracting part 31. After milling is finished, hot water generated by the hot water generating mechanism 6 is guided to the upper part of the mill case 18 by a hot water supply tube 30, discharged into the mill case 18, and while allowing the coffee powder left in the mill case 18 to flow and dropping into the coffee extracting part 31 from the passing hole 24, a coffee liquid is extracted.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention comprises a mill case and a coffee extraction section, and the coffee powder produced in the mill case is dropped into the coffee extraction section, and coffee liquid is extracted in the coffee extraction section. Regarding the coffee making machine.

0002

2. Description of the Related Art A conventional example of this type of coffee making machine is one described in, for example, Japanese Patent Laid-Open No. 148679/1983. This coffee extraction device has a mill case on the top of the main body that grinds coffee beans to produce coffee powder, and the coffee powder produced in the mill case falls below the mill case and is supplied. While establishing a section,
The hot water produced by the hot water generation mechanism is supplied into the coffee extraction part through the mill case to extract coffee liquid, and the coffee liquid is collected in a bottle placed below the side of the coffee extraction part.

0003

[Problems to be Solved by the Invention] If hot water is supplied into the coffee extraction part through the mill case as described above, the coffee powder remaining inside the mill case can be flushed out to the coffee extraction part side. This has the advantage that the inside of the mill case can be cleaned automatically.

However, in the conventional configuration, the grinding body inside the mill case is supported by a shaft provided perpendicularly to the bottom surface of the mill case, as in conventional general coffee making machines. The body rotates in the same horizontal plane at a predetermined distance from the bottom of the mill case. For this reason, the coffee beans are not sufficiently stirred up and down, and the resulting coffee powder is mixed with coarse particles, resulting in uneven particle size. Even if hot water is supplied to such coffee powder, coffee extract cannot be sufficiently extracted from coarse-grained coffee powder, which is uneconomical.

Moreover, since the shaft of the grinding body is arranged upward on the bottom of the mill case, if hot water is supplied into the mill case, the hot water will flow around the shaft of the grinding body. There is a risk that it may enter the inside of the motor below through the gap and deteriorate the insulation of the motor.

Furthermore, in order to drive the vertical shaft type crushing body,
The mill motor is placed below the mill case, and the coffee liquid storage bottle must be placed so that it protrudes from below the coffee brewing part to the side, which results in a relatively large installation space for the main unit. There are also drawbacks.

[0007] The present invention was made in consideration of these circumstances, and therefore, its purpose is to be able to grind coffee beans evenly and uniformly in the mill case, and to utilize the hot water supplied to the coffee extraction section. The inside of the mill case can be cleaned automatically, and hot water can be prevented from entering the motor side through the gap around the shaft of the grinder, improving insulation and reducing the installation space of the main body. Our goal is to provide a coffee making machine that can be made smaller.

[0008]

[Means for Solving the Problems] The coffee making machine of the present invention includes a mill case provided in the main body, and coffee beans provided in the mill case so as to be rotatable around a substantially horizontal axis. a grinding body for grinding; a passage hole provided to allow coffee powder to fall into the lower part of the mill case;
a coffee extraction part disposed below the mill case to receive coffee powder falling from the passage hole; a coffee liquid storage bottle disposed below the coffee extraction part; and a coffee liquid storage bottle disposed below the bottle. and a hot water generating mechanism, and the hot water generated by the hot water generating mechanism is supplied into the mill case and is configured to flow down into the coffee extraction section from the passage hole.

[0009]

[Operation] Since the axis of the grinding body is approximately horizontal, the rotation area of the grinding body inside the mill case is wider in the vertical direction than before, which allows the coffee beans to be stirred up and down while Can be crushed evenly from top to bottom. After pulverization, the hot water generated by the hot water generation mechanism is supplied into the coffee extraction section through the mill case, so that the coffee powder remaining in the mill case can be flushed out into the coffee extraction section with hot water. can. Furthermore, since the shaft of the crushing body is substantially horizontal, it is not necessary to provide the shaft of the crushing body at the bottom of the mill case, and it is possible to prevent hot water from entering the motor side through the gap around the shaft.

Furthermore, by making the axis of the grinding body substantially horizontal, the mill case, coffee extracting section, bottle, and hot water generating mechanism can be arranged in a vertical line, so that the installation space of the main body can be reduced.

[0011]

Embodiment A first embodiment of the present invention will be described below with reference to FIGS. 1 and 2. Reference numeral 1 denotes a main body, and a bottle mounting stand 2 is formed at the lower left side of the main body.
A hot water generating mechanism 6 is provided in the heating plate 3, which includes an electric heater 4 and a heating tube 5 buried in parallel. 7 is a bottle that is removably placed on the bottle mounting table 2. 8
9 is a water storage tank mounting portion formed at the lower right side of the main body 1;
is a water storage tank that is removably attached to the water storage tank attachment part 8, and a cylindrical water supply port 9a is formed at the bottom of this tank, and a valve body 10 and this valve body 10 are always connected to the water supply port 9a. A valve mechanism 12 consisting of a compression coil spring 11 biased in the direction of arrow A is provided.

A connecting port 13 is formed at one end of the heating pipe 5 of the hot water generating mechanism 6 in correspondence with the water supply port 9a of the water storage tank 9, and a protrusion 14 is formed in the connecting port 13. As shown in FIG.
is pressed and moved in the opposite direction of arrow A against the biasing force of the compression coil spring 11, and the water supply port 9a is in an open state. Reference numeral 15 denotes a motor storage chamber provided on the upper right side of the main body 1, and a short cylindrical mounting portion 16 is formed on the left side wall of this chamber so as to protrude to the left side. 17 is motor storage room 1
5, the rotation axis 17 of which is a motor disposed horizontally within the
a projects horizontally to the left from the mounting portion 16.

Reference numeral 18 denotes a cylindrical mill case with an open left side surface, and a fitting part 19 projecting rightward from the right side wall 18a is fitted onto the outer periphery of the mounting part 16. The shaft support part 2 is disposed above the bottle 7 by fitting the shaft support part 2 formed in the center of the right side wall 18a to protrude inward.
0, a cutter shaft 21 detachably connected to a rotating shaft 17a of a motor 17 is rotatably supported in a substantially horizontally oriented state. 22 is connected to the cutter shaft 2 via the support part 23.
A pair of crushing bodies are fixed to the mill case 18, and these are provided in parallel with each other with a predetermined gap between them on the inner peripheral surface of the mill case 18.

Reference numeral 24 denotes a plurality of passage holes formed in the lower part of the mill case 18, the size of which is set to allow passage of coffee powder that has been ground to a predetermined size or smaller. Reference numeral 26 denotes a circular lid that closes the left side surface of the mill case 18, and a female screw portion 26a formed on the outer edge of the lid is connected to a male screw portion 18b formed on the left outer circumference of the mill case 18.
It is removably screwed into the Reference numeral 27 denotes a bulging slope part formed on the upper part of the mill case 18, and a hot water guide part 28 is formed on the upper surface of the central part of this slope part. This hot water guide part 2
8, as shown in FIG.
A plurality of molten metal pouring holes 29 are formed to communicate within the molten metal 8 .

On the other hand, reference numeral 30 denotes a hot water supply pipe connected to the heating pipe 5 of the hot water generating mechanism 6, and the hot water supply port 30a of this pipe is located above and opposite to the hot water guide section 28 of the mill case 18. Reference numeral 31 denotes a funnel-shaped coffee brewing part that is removably placed on the top opening of the bottle 7, and this is connected to the passage hole 24 of the mill case 18.
An extraction port 32 is formed at the bottom, and a paper or cloth filter 33 is placed inside.

Next, the operation of the above configuration will be explained. To extract coffee liquid from the state shown in FIG. After charging, the mill case 1
8 is covered with a lid 26 and then reattached to the attachment part 16. After removing the water tank 9 from the water tank mounting part 8 and filling it with water for the desired number of people, the water tank 9 is reinstalled in the water tank mounting part 8. When pouring water into the water storage tank 9, the water storage tank 9 is attached to the water storage tank attachment part 8.
When removed from the tank, the valve body 10 is moved in the direction of arrow A by the biasing force of the compression coil spring 11, and the water supply port 9a is closed by the valve body 10. When the water storage tank 9 is reattached, the water supply port 9a is closed. The portion 9a is now in an open state.

After that, the motor 17 is energized and the motor 1
When the cutter shaft 2 is rotated, its rotating shaft 17a rotates the cutter shaft 2.
1. Therefore, the crushing body 22 is rotated in the direction of arrow B shown in FIG. At this time, since the axis of the cutter shaft 21 is oriented substantially horizontally, the crushing body 22 rotates in the direction of arrow B along the arc-shaped inner peripheral surface of the mill case 18. When the grinding body 22 rotates in this manner, the coffee beans in the mill case 18 (indicated by the two-dot chain line in FIG. 2) are caused to flow in the direction of arrow C shown in FIG. 2 due to the rotational force of the grinding body 22, and are agitated up and down. The whole coffee bean is ground evenly. The coffee powder pulverized to a predetermined particle size by the pulverizer 22 sequentially passes through the passage hole 24 and naturally falls into the coffee extracting section 31.

When all the coffee beans have been ground in this way, the motor 17 is turned off and instead the electric heater 4 is energized to generate heat, thereby preheating the bottle 7 and at the same time draining the water from the water storage tank 9. The water supplied into the heating tube 5 is heated to generate hot water. This hot water rises up the hot water supply pipe 30 due to boiling pressure and is discharged from the hot water supply port 30a into the hot water guide section 28, where it is diffused and flows from the pouring hole 29 to the slope portion 27 of the mill case 18 and the mill case 18. It flows downward along the inner circumferential wall, drips directly onto the grinding body 22 and cutter shaft 21, and finally drips into the coffee extraction section 31 below from the passage hole 24.

At this time, the remaining coffee powder adhering to the inner peripheral wall of the mill case 18 after grinding the coffee beans is swept downward by the hot water flowing downward along the inner peripheral wall of the mill case 18 as described above. The hot water is then supplied into the coffee extraction section 31 through the passage hole 24. In addition, the crushing body 2
2 and the coffee powder adhering to the cutter shaft 21 are also removed from the pouring hole 29.
The hot water dripping from the cup flows downward and flows into the coffee extraction section 31 through the passage hole 24. Therefore, coffee powder hardly remains in the mill case 18.

[0020] The hot water dripped into the coffee extraction part 31 as described above permeates the coffee powder and extracts the coffee extract to become coffee liquid, and then is filtered by the filter 33 and passed through the extraction port. 32 and is dripped into the bottle 7 and stored there.

[0021] According to the above configuration, the mill case
Since the crushing body 22 is provided in the case 18 so as to be rotated about the substantially horizontal cutter shaft 21, the rotation range of the crushing body 22 covers almost the entire upper and lower areas of the mill case 18. Regardless of the amount of coffee beans in the case 18, the entire coffee beans are stirred up and down and evenly ground, and the particle size of the produced coffee powder is made uniform. Ru. After pulverization, the hot water generated by the hot water generating mechanism 6 passes through the mill case 18 and is supplied into the coffee extracting section 31 from the passage hole 24, so that the coffee powder remaining in the mill case 18 is removed from the hot water. The coffee can be poured into the coffee extraction part 31, and the inside of the mill case 31 can be automatically cleaned. Moreover, when extracting the coffee liquid, the plurality of passage holes 24 at the bottom of the mill case 18 serve to diffuse the hot water, and the hot water can be evenly sprinkled over the entire coffee grounds in the coffee extracting section 31. Combined with the uniform particle size, coffee extract can be extracted evenly from the entire coffee powder.

Furthermore, the motor 17 is disposed horizontally in the motor storage chamber 15, and the cutter shaft 21, which is the axis of the crushing body 22, is connected to the horizontally oriented rotating shaft 17a. Unlike the conventional example (vertical shaft type crushing body), the cutter shaft 21 does not need to be provided at the bottom of the mill case 18, and the structure is such that hot water does not easily enter the motor 17 side through the gap around the cutter shaft 21. Insulation of the motor 17 can be improved, and the gap around the cutter shaft 21 can be simply sealed, contributing to a reduction in manufacturing costs.

Moreover, by making the shaft 21 of the grinding body 22 substantially horizontal, the mill case 18 and the coffee extraction part 31
Since the bottle 7 and the hot water generating mechanism 6 can be arranged in a vertical line, there is also the advantage that the installation space of the main body 1 can be reduced.

In the first embodiment, the mill case 18
Although it is formed into a cylindrical shape, it is not limited to this, and may be formed into a substantially spherical shape, for example.

FIG. 3 shows a second embodiment of the present invention.
The same parts as in the first embodiment are given the same reference numerals and their explanation will be omitted, and only the different parts will be given different numbers and explained. That is, in the first embodiment, the coffee extraction section 3
1 is removably placed on the top opening of the bottle 7, but in the second embodiment, a pair of hooks 34, 34 are provided protruding from the lower part of the mill case 18, and coffee is placed on the hooks 34, 34. A pair of engaging parts 36, 36 formed at the upper end of the extraction part 35
The coffee brewing part 35 is attached to the mill case 18 by detachably engaging the coffee extraction part 35. Note that 37 is a lid that is removably placed over the top opening of the bottle 7, and the extraction port 3 of the coffee extraction part 35 is located in the center of this lid.
Openings 37a are formed below the openings 8 and facing each other.

[0026] In the second embodiment constructed as described above, the same effects as in the first embodiment can be obtained.

FIGS. 4 to 7 show a third embodiment of the present invention, in which the same parts as in the first and second embodiments are given the same reference numerals and explanations are omitted, and only the different parts are different. The explanation will be given with reference numerals. That is, 39 is a cylindrical container-shaped coffee brewing part provided on the lower surface of the bottom of the mill case 18 so as to surround the passage hole 24, and a pipe 40 is integrally provided upright in the center of the bottom. Reference numeral 41 denotes a cylindrical body whose upper end is closed, and a mesh-like filter 42 is attached to the outer periphery of the lower end of the cylindrical body, and a rim 43 that protrudes downward by a predetermined length is provided on the outer periphery of the filter 42. . The cylindrical body 41 is placed on the bottom of the coffee brewing section 39 via the rim 43 and the filter 42 while being placed over the outer periphery of the pipe 40 with a slight gap, and in this state, the cylindrical body The shaped body 41 constitutes a siphon mechanism 44 together with the pipe 40.

In the third embodiment constructed as described above, the coffee powder ground in the mill case 18 falls onto the filter 42 through the passage hole 24. The hot water dripping from the passage hole 24 into the coffee extraction part 39 is temporarily stored in the coffee extraction part 39. Therefore, as shown in FIG. 5, the hot water in the coffee extraction part 39 gradually rises in level and enters the gap between the cylindrical body 41 and the pipe 40, and then, as shown in FIG. When the surface exceeds the upper end of the pipe 40, the siphon mechanism section 44 causes a siphon phenomenon and the hot water in the coffee extraction section 39 flows out in the direction shown by arrow D.

In this process, the hot water in the coffee extracting section 39 sufficiently extracts the coffee extract from the coffee powder and is then filtered by the filter 42 to become coffee liquid, which flows out from the pipe 40 due to the above-mentioned siphon phenomenon and flows into the bottle 7. stored within. Once the siphon phenomenon occurs, the hot water level in the coffee extraction section 39 gradually decreases, as shown in FIG.
As shown in , when the cylindrical body 41 is lowered to the lower end, air is sucked into the siphon mechanism 44 and the outflow of coffee liquid from the pipe 40 is stopped.

[0030] When this happens, the coffee extraction section 3
Since the siphon phenomenon does not occur until the level of the hot water in the coffee extraction part 39 rises to cover the upper end of the pipe 40, the hot water in the coffee extraction part 39 sufficiently extracts the extract from the coffee powder during this period. I come to do it. Therefore, the coffee liquid flowing out from the pipe 40 due to the siphon phenomenon has enough coffee extract extracted therefrom. Thereafter, the siphon phenomenon by the siphon mechanism 44 is repeated several times, and a desired amount of coffee liquid is stored in the bottle 7.

As described above, in the third embodiment, the same effects as those in the first and second embodiments can be obtained, and since the siphon mechanism section 44 is provided, sufficient amount of coffee is extracted from the coffee powder. extract can be extracted.

[0032]

[Effects of the Invention] As is clear from the above description, the present invention provides a coffee extraction section below the mill case, and allows the coffee powder produced by the rotation of the grinding body within the mill case to fall into the coffee extraction section. In the case where
The axis of the grinding body is made approximately horizontal, and the hot water produced by the hot water generation mechanism is supplied into the coffee extraction section through the mill case, so that the coffee beans in the mill case are stirred up and down. In addition to being able to grind evenly and evenly,
The interior of the mill case can be automatically cleaned using the hot water supplied to the coffee brewing section, and the hot water can be prevented from entering the motor side through the gap around the shaft of the grinding body, making it possible to prevent insulation. You can improve your sexuality.

Furthermore, by making the axis of the grinding body substantially horizontal, the mill case, coffee extractor, bottle, and hot water generating mechanism can be arranged in a vertical line, so that the installation space of the main body can be reduced.

[Brief explanation of the drawing]

[Fig. 1] Overall longitudinal sectional front view showing a first embodiment of the present invention.

[
Figure 2: Overall longitudinal side view

[Fig. 3] Overall vertical cross-sectional side view showing a second embodiment of the present invention.

[
FIG. 4: Overall vertical cross-sectional side view showing the third embodiment of the present invention

[Fig. 5] Longitudinal side view of the main parts to explain the action of the siphon mechanism (Part 1)

[Figure 6] Longitudinal side view of the main parts to explain the action of the siphon mechanism (part 2)

[Figure 7] Longitudinal side view of the main parts to explain the action of the siphon mechanism (part 3)

[Explanation of symbols]

1 is the main body, 6 is a hot water generation mechanism, 7 is a bolt, 17 is a motor, 18 is a mill case, 21 is a cutter shaft (shaft), 22 is a grinding body, 24 is a passage hole, 30 is a hot water supply pipe, 31 is a coffee The extracting section 35 is a coffee extracting section, and 39 is a coffee extracting section.

Claims (1)

[Claims] 1. A mill case provided in a main body, and a mill case provided within the mill case so as to be rotatable around a substantially horizontal axis, and the rotation of which allows the coffee beans housed in the mill case to be rotated. A pulverizing body to be pulverized; a passage hole provided at the lower part of the mill case through which coffee powder produced by being pulverized by the pulverizer falls; and a coffee falling through the passage hole disposed below the mill case. A coffee extractor that receives powder, a bottle that is placed below the coffee extractor and that receives the coffee liquid extracted in the coffee extractor, and a hot water generation mechanism that generates hot water that is placed below the bottle, A coffee making machine characterized in that the hot water produced by the hot water generating mechanism is configured to be supplied into the mill case and caused to flow down into the coffee extraction section from the passage hole.