JPH03149012A - Fully automatic coffee extracting device - Google Patents

Abstract

PURPOSE:To obtain the coffee powder which is pulverized to a uniform size by constituting a pulverizing part from a coffee bean accommodating member for accommodating coffee beans, rotary body in which the upper surface is installed through a minute gap for the bottom surface of the coffee bean accommodating member, and a rotary driving means which pulverizes coffee beans by revolvingly driving the rotary body. CONSTITUTION:As for a fully automatic coffee extracting device 1, an extracting device body 2 is equipped with a parching and pulverizing part 3, coffee bean feeding part 4, extraction part 5, etc. The parching and pulverizing part 3 consists of a coffee bean accommodating member 6 which is inserted into the coffee bean feeding part 4 and accommodates the coffee beans in raw bean state, rotary body 7 for pulverizing coffee beans, motor 8, and heaters 9 and 10 installed on the accommodation member 6 and the rotary body 7. A cover 4a is demounted, and coffee beans are dropped into the feeding part 4. When a start switch 20 is turned ON, the heaters 9 and 10 generate heat, and the motor 8 revolvingly drives a rotary body 7. The coffee beans are parched in the process from the accommodation part 6 to a gap 12, and pulverized into particles having a uniform size on the bottom surface 6a of the accommodating member 6 and the upper surface 7a of the rotary body 7.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a fully automatic coffee brewing device, and more particularly to a fully automatic coffee brewing device configured to uniformly grind coffee beans.

BACKGROUND OF THE INVENTION In order to extract coffee with good flavor, it is desirable to roast green coffee beans and immediately grind them with a mill for extraction. Therefore, the present applicant
We proposed a ``fully automatic coffee brewing device'' that was introduced in Publication No. 17. The proposed device includes a roasting section that heats input green coffee beans using a heating means and roasts the coffee beans, and a grinding section that grinds the coffee beans roasted in the roasting section. and a conveying section which transports the beans roasted in the tstJi section to the pulverizing section as white material after roasting, and a conveying section which is provided between the roasting section and the pulverizing section and transports the beans roasted in the tstJi section into the pulverizing section as a white material; It is integrally constructed with an extraction part into which the coffee beans are fed and extracts coffee from the coffee beans.

In this fully automatic coffee brewing device, the grinding section rotates a cutter made of two blades to grind roasted coffee beans. For example, when grinding coffee beans coarsely, the cutter rotates. The drive time is relatively short, and when coffee beans are finely ground, the cutter rotation drive time is lengthened.

Problems to be Solved by the Invention However, in the above 2 conventional fully automatic coffee brewing devices, when a large number of coffee beans are supplied into a grinding container having a cutter, these coffee beans are ground all at once, and the blade-shaped Since the cutter collides with the coffee beans and crushes them, the size of the crushed coffee particles is not uniform.
There is a problem that the flavor of the coffee extracted in the extraction section is not stable. Furthermore, in conventional devices, if you want to grind coffee beans into fine pieces, you have to lengthen the rotational drive time of the cutter, but there is also the problem that it is difficult to grind all coffee beans into thin pieces in the same way.

Therefore, an object of the present invention is to provide a fully automatic coffee brewing device that solves the above problems.

Means for Solving the Problem The present invention provides the above-mentioned fully automatic coffee brewing device, in which the grinding section includes a coffee bean storage member for storing coffee beans;
A rotating body whose surface is provided close to the bottom surface of the coffee bean storage member through a small gap, and the rotating body is rotationally driven to crush coffee beans supplied from the coffee bean storage member to the gap. It consists of a rotational drive means.

Operation Coffee beans are supplied between the bottom surface of the coffee bean storage member and the top surface of the rotating body, and the rotating body is rotationally driven by the rotational drive means, and the coffee beans are supplied between the bottom surface of the coffee bean storage section and the top surface of the rotating body. Coffee beans are ground little by little, and coffee powder is obtained that is ground to a uniform size using the principle of milling.

Embodiments Next, embodiments of the present invention will be described with reference to the drawings. 1st
1 and 2 are external views showing a fully automatic coffee brewing device 1 (hereinafter simply referred to as the brewing device) which is an embodiment of the present invention. The extraction section H1 shown in the figure is a drip type extraction device, and roughly speaking, it includes a roasting and crushing section 3. Coffee bean input section 4 and extraction section 5
The configuration includes the following.

As shown in FIG. 3, the roasting and grinding section 3 includes a coffee bean storage member 6 that stores the green coffee beans inserted into the spherical coffee bean input section 4, and a coffee bean storage member 6 that has a circular upper surface for grinding the coffee beans. a rotating body 7 and a motor 8 that rotationally drives the rotating body 1.
and heaters 9 and 10 provided on the storage member 6 and the rotating body 7.
It becomes more.

In addition, motor 8. Heaters 9 and 10 are built into the main body 2.
m circuit (not shown). The heater 9 has a built-in coiled nichrome wire and is attached to the inner wall of the storage member 6.
The green coffee beans placed in the storage member 6 are heated and roasted.

Further, the heater 10 has a built-in coiled nichrome wire and is attached to the bottom side of the rotating body 7, and is inserted into the central hole 6 of the storage member 6.
The coffee beans falling from a are heated and roasted. Therefore, the heaters 9 and 10 function as a roasting section that roasts green coffee beans.

The upper opening 6b of the -heat storage member 6 communicates with the coffee bean input portion 4, and the inside thereof is inclined in a tapered shape so as to encourage the coffee beans to fall. A rack 6C is provided on the outer periphery of the storage member 6, and a binion 6d meshes with the rack 6C. Then, by turning the knob 11 shown in FIG. 1, the binion 6d is rotated and the storage member 6 is
It moves up and down so as to approach or ili12H with respect to the rolling body 7.

Further, the storage member 6 itself is made of, for example, ceramic, which has heat resistance, corrosion resistance, and extremely hardness. The bottom surface 6e of the storage member 6 is a flat surface having minute irregularities, and a tapered surface that guides coffee beans to the outside is provided around the central hole 6a.

The rotating body 7 disposed below the storage member 6 includes an upper surface 7a facing the bottom surface 6e of the storage member 6, and a skirt portion 7b that covers the outer periphery of the motor 8.

The upper surface 7a of the rotating body 7 has a rough surface with minute irregularities, and has a conical protrusion IC in the center thereof that guides coffee beans that have fallen from the storage member 6 to the outside. Further, like the storage member 6, the rotating body 7 is made of ceramic having heat resistance, corrosion resistance, and high hardness.

As will be described later, the rotating body 7 is rotationally driven by a t-type 8, and the bottom surface 6e of the storage member 6 and the top m of the rotating body 7 are driven through the center hole 6a.
Grind the coffee beans supplied to 111112 with 7a. Incidentally, the mo 98 is fixed to the bracket 13. Therefore, by turning the aforementioned knob 11, the storage member 6 is raised.

The gap 1112 is adjusted by going to work.

Moreover, as shown in FIG. 13, the outer periphery of the storage member 6 and the rotating body 7 is provided with a hole m3b that communicates with the lower N collar 03a of the roasting and crushing section 3.
is formed. This lower opening 3a is located above the dripper 14 in the extractor 555.

Reference numeral 15 denotes a tank in which water for brewing coffee is stored, and a heater (not shown) for boiling the water in the tank 15 is provided at the bottom of the tank. Further, the hot water boiled in the tank 15 is supplied to the dripper 14 via an inlet valve (not shown) and a pipe 16. The extraction part 5 is the dripper 1 mentioned above.
4 and a pot 17 remounted below the dripper 14.

Next is a fully automatic coffee brewing device with the above configuration! In 1, the process of coffee extraction will be explained step by step.

First, the lid 4a of the coffee bean input section 4 is removed, and green coffee beans are dropped into the input section 4. Next, M4a is attached to the insertion port 4, and the upper opening of the input section 4 is opened. Next, set the coffee strength, roasting temperature, etc. by turning the dial 18 and switch 1-9 provided on the top surface of the main body 2. Then, as described above, turn the knob 11 for adjusting the grinding roughness. After adjusting the above li 12 by turning , press the start switch 20 on the front of the main body 2.The above dial 18° switch 19 and start switch 20 are connected to the in+i@ path (not shown) built into the main body 2. Therefore, when the start switch 20 is turned on, the IIIlo path heats the motors 9 and 10, starts the motor 98, and drives the rotating body 7 to rotate.

A large number of coffee beans inserted into the insertion part 4 are placed in a storage part 6 having a tapered bottom, and are heated by a heater 9. Further, the coffee beans at the bottom of the storage section 6 are supplied into the gap 1112 between the storage member 6 and the rotation body 7 through the central hole 6a by the rotation of the rotation body 7.

In this case, since the storage member 6 and the rotating body 7 are also heated by the heat generated by the heaters 9 and 10, the coffee beans are stored in the storage section 6.
It is roasted in the process from 111112. Further, the rotating body 7 is rotationally driven by the motor 8, and the coffee beans are moved outward by the protrusion IC. At this time, the gap [12] gradually narrows due to the tapered portion of the bottom im6e of the storage member 6, and the surfaces of the bottom surface 6e of the storage member 6 and the top surface 7a of the rotating body 7 are rough like stone.
The coffee beans supplied into the gap [112] are roasted and finely ground.

In this way, the coffee beans are crushed into grains of approximately average size while passing through the storage member 6 and the rotating body 7, which constitute the millstone.

Then, the ground coffee beans are pushed outward by the following coffee beans, fall into the passage 3b, the lower opening 3a, and enter the dripper 14.

Since the process of roasting and grinding the green coffee beans described above is carried out in substantially the same way for all the coffee beans placed in the storage member 6, the coffee powder that has fallen into the dripper 14 is processed approximately from the start of grinding to the end of grinding. It becomes a uniform grain. When all the coffee beans put into the storage member 6 are crushed, the J! ali is dripped into dripper 14 via pipe 1-6.

Since a filter 14a is provided at the bottom of the dripper 14, coffee extracted from the coffee grounds in the dripper 14 passes through the filter 14a and is stored in the pot 17 below.

In this way, in the brewer M1, coffee beans in a green state are roasted, and the coffee beans are immediately ground and extracted, so that coffee with a high flavor can be made.

Also, in the above explanation, green coffee beans were used, but
For example, when using roasted coffee beans, the start switch 21 may be pressed instead of the start switch 20. In this case, both the heaters 9 and 10 are not heated, and the storage member 6 and rotating body 7 function only as a crushing section.

Effects of the Invention As mentioned above, the fully automatic coffee brewing device according to the present invention has the following features:
Coffee beans are fed into the gap between the bottom surface of the coffee bean storage member and the top surface of the rotating body at regular intervals, and the coffee beans can be ground to a uniform size by the principle of a millstone. Therefore, for example, when producing strong coffee, by narrowing the gap, the size of the crushed coffee particles can be made finer and more uniformly fine particles can be produced, resulting in a more stable flavor, etc. It has the following features.

[Brief explanation of the drawing]

Fig. 1 is a front view of a fully automatic coffee brewing device according to the present invention - an embodiment, Fig. 2 is a plan view thereof, and Fig. 3 is a vertical sectional view for explaining the internal structure of the main part of the present invention. be. 1-・Fully automatic coffee extraction device, 2=-extraction device main body,
3...Roasting and grinding section, 4--Coffee bean inputting section, 5-
...Brewing part, low coffee bean storage member, 5e-...
Bottom surface, 7...Rotating body, 7a...Top surface, 12=-gap, 14--Dripper, 15--Tank, 20.21-
-Start switch.

Claims (1)

[Scope of Claims] A fully automatic coffee brewing device that includes a grinding section that grinds coffee beans, and supplies coffee powder ground by the grinding section to an extraction section to extract coffee, wherein the grinding section is configured to a coffee bean storage member that stores coffee beans; a rotating body whose top surface is provided close to the bottom surface of the coffee bean storage member through a small gap; and a rotating body that is rotationally driven to A fully automatic coffee brewing device comprising: a rotary drive means for crushing coffee beans supplied into the gap from a coffee bean storage member.