JPH0321702Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Purpose of the invention] (Industrial application field) The present invention is equipped with a mill case and a coffee extraction section, and allows coffee powder produced in the mill case to fall into the coffee extraction section. , relates to a coffee making machine that extracts coffee liquid within its coffee extraction section.

(Prior Art) A conventional example of this type of coffee making machine is one described in, for example, Japanese Patent Application Laid-open No. 148679/1983. This product has a mill case on the top of the main body that grinds coffee beans to produce coffee powder.
A coffee extraction section is provided below the mill case to which coffee powder produced in the mill case is dropped and supplied, while hot water produced by a hot water generation mechanism is supplied into the coffee extraction section through the mill case. , and is configured to extract coffee liquid.

(Problem to be solved by the invention) As described above, if hot water is supplied into the coffee extraction section through the mill case, the coffee powder remaining inside the mill case will be flushed out to the coffee extraction section side. This has the advantage that the inside of the mill case can be cleaned automatically. However, in the above conventional configuration, the grinding body inside the mill case is supported by a shaft provided perpendicularly to the bottom of the mill case, as in conventional general coffee making machines. The robot rotates in the same horizontal plane at a predetermined distance from the bottom of the case. For this reason, the coffee beans are not sufficiently stirred up and down, and coarse particles are mixed into the produced coffee powder, 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 disadvantageous in that it is uneconomical.

Moreover, since the shaft of the grinding body is arranged upward on the bottom of the mill case, if the hot water is supplied into the mill case, the hot water will flow from between the holes around the shaft of the grinding body. There is a risk that it will invade the inside of the motor below and reduce the insulation of the motor.

The present invention was developed in consideration of these circumstances, and its purpose is to be able to evenly and uniformly grind the coffee beans in the mill case, and to also grind the coffee beans in the mill using the hot water supplied to the coffee extraction section. To provide a coffee making machine which can automatically clean the inside of a case, prevent hot water from entering the motor side from the gap around the shaft of a grinding body, and improve insulation. be.

[Structure of the invention] (Means for solving the problem) The coffee making machine of the invention includes a mill case provided in the main body, and a machine inside the mill case that can rotate around a substantially horizontal axis. a pulverizer which is provided and which pulverizes the coffee beans housed in the mill case by its rotation; a coffee extraction part provided below the mill casing; and a pulverizer which is provided at the bottom of the mill casing. a passage hole through which coffee powder produced by pulverization by the body falls into the coffee extraction section; and a hot water generation mechanism provided in the body to generate hot water, the hot water generated by the hot water generation mechanism is used for the mill. It is configured to be supplied into the case and allowed to flow down into the coffee extraction section from the passage hole.

(Function) 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 without any vertical unevenness. Can be crushed. 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 is flushed out into the coffee extraction section by the hot water. be able to. Moreover, since the shaft of the crushing body is approximately horizontal, there is no need to install the shaft of the crushing body at the bottom of the mill case, and hot water can be prevented from entering the motor side from the gap around the shaft. . Furthermore, when extracting coffee liquid, the passage holes at the bottom of the mill case function to diffuse hot water, allowing hot water to be evenly sprinkled over the coffee grounds in the coffee extracting section.

(Example) Hereinafter, a first example of the present invention will be described 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, and a hot water generating mechanism 6 consisting of an electric heater 4 and a heating pipe 5 buried in parallel in a heating plate 3 is installed in this bottle mounting stand 2.
is provided. 7 is a bottle that is removably placed on the bottle mounting table 2. On the other hand, 8 is a water storage tank mounting part formed at the lower right side of the main body 1;
is a water storage tank that is removably installed in the water storage tank mounting part 8, and a cylindrical water supply port 9 is provided at the bottom of this tank.
A is formed in the water supply port 9a, and a valve mechanism 12 comprising a valve body 10 and a compression coil spring 11 that always biases the valve body 10 in the direction of arrow A is provided. On the other hand, a connection port 13 is formed at one end of the heating pipe 5 of the hot water generation mechanism 6 in correspondence with the water supply port 9a of the water storage tank 9, and a protrusion 14 is formed within this connection port 13. As shown in FIG. 1, when the water storage tank 9 is attached to the water storage tank mounting portion 8, the water supply port 9a is fitted in the connection port 13 in a water-tight manner, and the valve body 10 is connected to the compression coil spring by the protrusion 14. The water supply port 9a is pushed in the opposite direction of the arrow A against the biasing force 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. 1
Reference numeral 7 denotes a motor disposed laterally within the motor storage chamber 15, and its rotating shaft 17a projects horizontally to the left from the mounting portion 16. Now, 18 is a cylindrical mill case with an open left side, and this is a fitting part 1 which is cylindrically protruded to the right on the right side wall 18a.
9 is placed above the bottle 7 by fitting it into the outer circumference of the mounting portion 16, and the right side wall 18
A shaft support portion 20 formed to protrude inward at the center of a.
A cutter shaft 21, which is detachably connected to a rotating shaft 17a of a motor 17, is rotatably supported in a substantially horizontally oriented state. A pair of crushing bodies 22 are fixed to the cutter shaft 21 via a support cylinder 23, and these are provided in parallel on the inner peripheral surface of the mill case 18 with a predetermined distance between them. 2
Reference numeral 4 denotes a plurality of passage holes formed at the bottom of the case 18, the size of which is set to allow passage of coffee powder crushed to a predetermined size or less.
Reference numeral 26 denotes a circular lid that closes the left side of the mill case 18, and a female threaded portion 2 formed on the outer edge of this lid.
6a is removably screwed into a male threaded portion 18b formed on the outer periphery of the left end of the mill case 18. 2
Reference numeral 7 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. As shown in FIG. 2, this hot water guide part 28 is formed into a cylindrical shape whose upper side gradually opens wider, and a mill case 18 is placed inside the hot water guide part 28.
A plurality of pouring holes 29 are formed to communicate with the inside. On the other hand, 30 is a hot water supply pipe connected to the heating pipe 5 of the hot water generation mechanism 6, and the hot water supply port 30a of this is connected to the heating pipe 5 of the hot water generation mechanism 6.
It is located above and opposite to the hot water guide section 28 of No. 8. 3
Reference numeral 1 denotes a funnel-shaped coffee extraction part that is removably mounted on the top opening of the bottle 7, and is located directly below the passage hole 24 of the mill case 18, with an extraction opening 32 formed at the bottom. At the same time, a paper or cloth filter 33 is placed inside.

Next, the operation of the above configuration will be explained. 1st
To extract coffee liquid from the state shown in the figure, first remove the mill case 18 from the attachment part 16, then remove the lid 26 from the mill case 18, and put coffee beans into the mill case 18 for the desired number of people. After that, the mill case 18 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 the water storage tank 9 is removed from the water storage tank attachment part 8 when water is poured into the water storage tank 9, the valve body 10 is moved in the direction of arrow A by the biasing force of the compression coil spring 11, and the valve body 10 closes the water supply port. When the water tank 9 is reinstalled, the water supply port 9a is closed.
becomes open. Next, when the motor 17 is energized and rotated, the cutter shaft 21 and the grinding body 22 are rotated by the rotating shaft 17a in the direction of arrow B shown in FIG. 2. 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 arcuate inner peripheral surface of the mill case 18. When the grinding body 22 rotates in this way, the coffee beans in the mill case 18 (indicated by the two-dot chain line in FIG. 2) are caused by the rotational force of the grinding body 22 to flow in the direction of arrow C shown in FIG. The whole coffee bean is ground evenly. The coffee powder, which has been ground to a predetermined particle size by the grinding body 22, is sequentially passed through the passage hole 24.
It naturally falls into the coffee extraction part 31 through the coffee extraction part 31. In this way, when all the coffee beans have been ground, the motor 17 is turned off, and the electric heater 4 is instead energized to generate heat, thereby preheating the bottle 7. At the same time, the heating pipe 5 The water supplied inside is heated to produce hot water. This hot water rises up the hot water 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. The coffee flows downward along the inner circumferential wall of the coffee grinder 18, drops directly onto the grinding body 22 and the cutter shaft 21, and finally drops into the coffee extraction section 31 from the passage hole 24 below. 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. At the same time, the coffee is supplied from the passage hole 24 into the coffee extraction section 31 . Further, the coffee powder adhering to the grinding body 22 and the cutter shaft 21 is also swept downward by the hot water dripping from the pouring hole 29 and is flushed into the coffee extracting section 31 from the passage hole 24. Therefore, coffee powder hardly remains in the mill case 18. Then, as described above, the hot water dripped into the coffee extraction part 31 penetrates into the coffee powder, extracts the coffee extract, and becomes a coffee liquid.Then, the hot water is filtered by the filter 33 and passed through the extraction port 32 to the bottle 7. It is dripped and stored inside.

According to the above configuration, the mill case 1
8, the crushing body 22 is installed so as to be rotated about the substantially horizontal cutter shaft 21, so that the crushing body 22
The rotation range of No. 2 covers almost the entire vertical area of the mill case 18, so that regardless of the amount of coffee beans in the mill case 18, the entire coffee beans are stirred up and down and evenly ground. , the particle size of the produced coffee powder is made uniform. After pulverization, the hot water generated by the hot water generating mechanism 6 passes through the mill case 18 and into the passage holes 24.
Since the coffee powder remaining in the mill case 18 can be flushed out into the coffee extractor 31 with hot water, the inside of the mill case 31 can be automatically cleaned. can.
Moreover, when extracting coffee liquid, the passage hole 24 at the bottom of the mill case 18 acts to diffuse hot water.
Hot water can be evenly sprinkled over the entire coffee powder in the coffee extracting section 31, and in conjunction with the above-described uniform particle size of the coffee powder, coffee extract can be evenly extracted 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, which is different from the conventional example described above. is different,
There is no need to provide the cutter shaft 21 at the bottom of the mill case, and hot water flows from the gap around the cutter shaft 21 to the motor 1.
The structure is such that it is difficult for intrusion into the 7 side, improving the insulation of the motor 17, and requiring a simple seal between the edges around the cutter shaft 21, which also contributes to reducing manufacturing costs.

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

FIG. 3 shows a second embodiment of the present invention, in which the same parts as in the first embodiment are given the same reference numerals and their explanation will be omitted, and only different parts will be given different numbers and explained. That is, in the first embodiment, the coffee extraction part 31 was removably mounted on the top opening of the bottle 7, but in the second embodiment, a pair of hook parts 34, 34 are provided at the bottom of the mill case 18. A pair of hooking parts 36, 36 formed at the upper end of the coffee extracting part 35 are removably engaged with the hook parts 34, 34, thereby attaching the coffee extracting part 35 to the mill case 18. I try to do that. Incidentally, reference numeral 37 denotes a lid that is removably placed over the top opening of the bottle 7, and an opening 37a is formed in the center of the lid, which is located opposite to the extraction opening 38 of the coffee extraction section 35.

In the second embodiment configured in this way, the same effects as in the first embodiment can be obtained.

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 different parts are given different numbers. I will explain it by attaching it. 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 extracting part 39 via the rim 43 and the filter 42 while covering the outer circumference of the pipe 40 with a slight gap. The cylindrical body 41 is the pipe 4
0 constitutes a siphon mechanism 44.

In the third embodiment configured as described above, coffee powder ground in the mill case 18 falls from the ventilation hole 24 onto the filter 42 . 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 extracting section 39 gradually rises in level and enters between the cylindrical body 41 and the pipe 40, and then as shown in FIG. As shown, when the hot water level 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 coffee extraction section 39
After sufficiently extracting the coffee extract from the coffee powder, the hot water inside is filtered by the filter 42 to become coffee liquid, which flows out from the pipe 40 due to the above-mentioned siphon phenomenon and is stored in the bottle 7.
Once the siphon phenomenon occurs, the hot water level in the coffee extracting section 39 gradually lowers, and when it drops to the lower end of the cylindrical body 41 as shown in FIG. The coffee liquid then stops flowing out from the pipe 40. When this happens, the coffee extraction section 39
Since the siphon phenomenon does not occur until the level of the hot water inside rises to cover the upper end of the pipe 40, the hot water inside the coffee extraction section 39 sufficiently extracts the extract from the coffee powder during this period. It becomes like this. Therefore, due to the siphon phenomenon, the pipe 40
The coffee liquid flowing out from the cup has enough coffee extract extracted from it. 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.

In this way, 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, coffee extract can be sufficiently extracted from the coffee powder. can do.

[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 generated by the rotation of the grinding body within the mill case to fall into the coffee extraction section. In this apparatus, the axis of the grinding body is made substantially horizontal, and the hot water produced by the hot water generating mechanism is supplied into the coffee extracting section through the mill case, so that the coffee beans in the mill case are Not only can the coffee be stirred up and down to evenly grind the coffee, but the inside of the mill case can be automatically cleaned using the hot water supplied into the coffee brewing part. 〓Insulation can be improved by preventing intrusion into the motor side from between. Furthermore, when extracting coffee liquid, the passage holes at the bottom of the mill case act as a hot water diffusion function, allowing the hot water to be evenly sprinkled over the entire coffee powder in the coffee extracting section, which contributes to the uniformity of the particle size of the coffee powder as described above. Together, the coffee extract can be extracted evenly from the entire coffee powder.

[Brief explanation of the drawing]

1 and 2 show a first embodiment of the present invention, FIG. 1 is a longitudinal sectional front view of the whole, FIG. 2 is a longitudinal sectional side view of the same, and FIG. 3 is a second embodiment of the invention. FIG. 2 is a diagram corresponding to FIG. 2 showing an embodiment. 4 to 7 show a third embodiment of the present invention, and a fourth embodiment of the present invention is shown in FIGS.
The figure is a view corresponding to FIG. 2, and FIGS. 5 to 7 are longitudinal sectional side views of main parts shown in different states to explain the operation. In the drawing, 1 is the main body, 6 is the hot water generation mechanism, 17 is the motor, 18 is the mill case, 21 is the cutter shaft (shaft), 22 is the grinding body, 24 is the passage hole, 30 is the hot water supply pipe, and 31 is the coffee extraction part, 35 is a coffee extraction part, 39 is a coffee extraction part, 40 is a pipe, 41
4 is a cylindrical body, and 44 is a siphon mechanism.

Claims (1)

[Scope of utility model registration request] a mill case provided in the main body; and a grinding body provided within the mill case so as to be able to rotate around a substantially horizontal axis and which crushes coffee beans housed in the mill case by rotation thereof. , a coffee extraction section provided below the mill case; a passage hole provided at the bottom of the mill case for allowing coffee powder produced by being crushed by the grinding body to fall into the coffee extraction section; A hot water generating mechanism is provided in the main body to generate hot water, and the hot water generated by the hot water generating mechanism is supplied into the mill case and made to flow down into the coffee extraction part from the passage hole. Features coffee making machine.