JP2604449B2 - Coffee extractor - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a coffee extractor for extracting coffee with water.

2. Description of the Related Art Conventionally, a coffee extractor shown in FIG. 3 has been known as a coffee extractor for extracting coffee with water. In FIG. 3, 1 is a container for storing water, 2 is a cock for adjusting the dripping speed of water, 3 is an extraction container for storing coffee powder and extracting coffee, and 4 is a receiver for storing the extracted coffee.

According to the above configuration, water is stored in the container 1, the dropping speed of the water is adjusted by the cock 2, the water in the container 1 is poured into the coffee powder in the extraction container 3, and the coffee extracted from the coffee powder in the extraction container 3 is removed. This is received and stored in the receiver 4.

PROBLEM TO BE SOLVED BY THE INVENTION The above-mentioned conventional water-based extraction apparatus is extremely superior in taste and aroma of the coffee liquid as compared with the generally-used hot water-based extraction apparatus. Moreover, even if stored, the quality deterioration is extremely small. On the other hand, there is a problem that the extraction time is extremely long in order to obtain the required concentration of coffee, and it usually requires 3 hours or more depending on the amount of coffee to be extracted, and it is difficult to use it easily on a daily basis.

The present invention solves the above-mentioned conventional problems, in which coffee can be extracted in a short time of extraction with boiling water, and has the same taste, aroma and the like of a coffee liquid as when extracted with water. Still another object of the present invention is to provide a coffee extractor which can automatically obtain coffee from coffee beans and automatically clean the mill.

Means for Solving the Problems In order to solve the above problems, a coffee extractor of the present invention comprises:
An extraction chamber for storing coffee powder and extracting coffee, an electric mill provided above the extraction chamber and having a blade cutter, and a receiver for receiving and storing the coffee obtained from the extraction chamber And first and second water containers for storing water, a heater for heating the water in the second water container, and operating the electric mill for a time corresponding to the amount of coffee beans, and then energizing the heater. And heating the water in the second water container, and when the water in the second water container reaches a predetermined temperature,
After the heated water in the water container is allowed to flow down to the extraction chamber via the electric mill and simultaneously operate the cutter of the electric mill for a certain period of time to make the coffee powder in the extraction chamber uneven,
Control means for controlling the water in the first water container to flow down to the extraction chamber so as to obtain coffee in the receiver.

Operation According to the above configuration, first, water is stored in the first and second water containers, and coffee beans are charged into the electric mill, and then the electric mill is controlled by the control means for a time corresponding to the amount of coffee beans. Activated to make coffee powder, which is stored in the extraction room,
Further, the heater is energized to heat the water in the second water container,
When the water in the second water container reaches a predetermined temperature, the second
At the same time, the heated water in the water container is caused to flow down to the extraction chamber via the electric mill, and at the same time, the cutter of the electric mill is operated for a certain period of time to wash the adherence of the coffee powder in the electric mill with the heated water, and the coffee powder in the extraction chamber is removed. Sprinkle the heated water evenly to disperse the coffee powder sufficiently with boiling water to facilitate the elution of the soluble solids of the coffee powder, and then let the water in the first water container flow down to the extraction chamber to extract the coffee. Then, the extracted coffee is received by a receptor to obtain coffee. As described above, coffee is automatically obtained from the coffee beans and the mill is automatically cleaned. In addition, for example, in the case of about 5 cups of coffee, the coffee extracted with the conventional water in a short time of about 3 to 4 minutes. A coffee with almost the same quality as taste, richness and aroma can be obtained, and there is no deterioration of the coffee liquid.

Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

1 and 2 are a longitudinal sectional view and a control circuit diagram showing the configuration of a coffee extractor according to one embodiment of the present invention. First
In FIG. 2 and FIG. 2, reference numeral 11 denotes a first water container which stores water and has an outlet 12 on the bottom surface. 13
Is a second water container, and the coffee powder stored in the extraction chamber 14
A heater 16 for heating water, a thermostat 17 which is normally open and closes when the water temperature reaches an appropriate temperature, and an outlet 18 downward.
It has. Outlet 1 of first and second water containers 1113
When the time switch 19 is in the "OFF" state, the cams 2 and 18 are closed via the valves 21 and 22 by the cam 20 which rotates in association with the timed operation. Discharge port 2 when outlets 12 and 18 are open
Through 3 it communicates with a hopper 24 in which the coffee beans are stored. The bottom of the hopper 24 is driven by a motor 25, a rotating blade-like cutter 26 is provided, and a mill 28 having a perforated plate 27 for discharging ground coffee powder to the extraction chamber 14 on the bottom surface. Communicating. Reference numeral 29 denotes a lid for preventing the ground coffee powder from overflowing the extraction chamber 14 and scattering. Numeral 30 denotes a receiver for receiving and storing the extracted coffee solution obtained from the extraction chamber 14. Numeral 31 denotes a heater, which heats the extracted coffee liquid via a heat conducting plate 32 and keeps the temperature at a predetermined temperature. Reference numeral 33 denotes a thermostat for controlling the heater 31 in order to maintain the coffee liquid at an appropriate temperature. The heater 31 can be arbitrarily energized by a switch 34. The time switch 19 includes a timer motor 35 for timed operation, a mill 28, and a switch 36 for switching a heater circuit. 37 is a lid of the first water container 11 and a second water container.
A recess 38 is formed so as to pour water from above 13.

The operation of the above configuration will be described below. First,
When the required amount of water according to the amount of coffee beans is poured into the concave portion 38 of the lid 37 as a preparation for extracting coffee, the second water container 13 is first filled with water and overflows, so that the first water container 11 overflows. The remaining water flows into the area. Next, after the required amount of coffee beans is put into the hopper 24, the time switch 19 is set to a time limit corresponding to the amount of coffee beans. At this time, the contact a of the switch 36 is closed, the motor 25 is driven, and the mill 28 operates. Eventually, when the coffee beans have been ground and the prescribed timed operation has been completed,
The contact a of the switch 36 is opened and the contact b is closed, and the power supply to the heater 16 of the second water container 13 starts. When the water temperature in the second water container 13 reaches a predetermined temperature, the thermostat 17 closes. When the thermostat 17 is closed, the timer motor 35 driving the timed operation of the time switch 19 starts operating again, and
25 is driven and the mill 28 starts operating again. Immediately after the operation of the time switch 19 starts, the cam 20
, The outlet 18 of the second water container 13 is opened to supply heated water into the mill 28. At this time, the heated water is used to wash the adhered coffee powder in the mill 28 by the centrifugal force of the cutter 26 and to spray the heated water uniformly on the coffee powder 15 deposited in the extraction chamber 1. Here, even if all the heated water in the second water container 13 has been drained, the timed operation of the time switch 19 continues,
After sufficiently dispersing the coffee powder 15 in the extraction chamber 14, the cam 20 opens the outlet 12 of the first water container 11 via the valve 22, and the time operation of the time switch 19 ends. Then, the water in the first water container 11 is supplied to the extraction chamber 14 via the mill 28. At this time, the firm and firm fiber of the coffee powder is sufficiently swelled, and the soluble solid content of the coffee is in a state of being easily eluted. You can finish the extraction. Thus, the quality of the extracted coffee liquor is very close to the quality of the coffee liquor extracted with conventional equipment, for example with water. That is, the quality of the coffee liquid is deteriorated in proportion to the temperature and the extraction time, and in the case of the extraction device of the present invention, first, a small amount of heated water, that is, a small amount of heat is supplied to the coffee powder 15, and thereafter, However, since the temperature of the coffee powder in the extraction chamber 14 is rapidly lowered with water immediately, it is considered that the chemical reaction occurring in the coffee liquid is extremely difficult to proceed. Further, since the coffee liquid is hardly heated, the quality does not deteriorate even if it is left for several days.

When drinking the hot coffee, place the receiver 30 containing the coffee on the heat conduction grinder 32 and switch the
When it is closed, it is heated by the heater 31 and the thermostat 33
Is kept at an appropriate temperature.

Further, the coffee extraction time can be set only by appropriately setting the diameters of the outlets 12 and 18 in advance, and components such as the pump and its control are unnecessary, so that the coffee can be manufactured with high reliability and low cost.

Effects of the Invention As described above, according to the present invention, when hot water is supplied, the hot water is sprayed uniformly on the coffee powder by rotation of the cutter, and the coffee powder is peeled, thereby facilitating the elution of the soluble solid content of the coffee powder. For example, 3 to 4 for 5 cups of coffee
In a short time of about a minute, the coffee with good taste, richness and aroma can be obtained automatically from coffee beans without deteriorating the coffee with sufficient flour concentration, and the coffee powder adhering to the electric mill is also automatically cleaned. The maintenance of the electric mill can be made unnecessary.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a configuration of a coffee extractor according to one embodiment of the present invention, FIG. 2 is a control circuit diagram of the coffee extractor, FIG.
The figure is a longitudinal sectional view showing the configuration of a conventional coffee extractor. 11 ... first water container, 13 ... second water container, 14 ... extraction chamber, 15 ... coffee powder, 16 ... heater, 17 ... thermostat, 19 ... time switch, 25 ... motor , 26 ... Cutter, 28 ... Mill, 30 ... Receptor, 35 ... Timer motor, 36 ... Switch.

Claims (1)

(57) [Claims] 1. An extraction chamber for extracting coffee by extracting coffee powder, an electric mill disposed above the extraction chamber and having a blade cutter, and receiving the coffee obtained from the extraction chamber. After receiving water, first and second water containers for storing water, a heater for heating water in the second water container, and operating the electric mill for a time corresponding to the amount of coffee beans Energizing the heater to heat the water in the second water container, and when the water in the second water container reaches a predetermined temperature, the heating water in the second water container is supplied to the electric mill. At the same time, the cutter of the electric mill is operated for a certain period of time to make the coffee powder in the extraction chamber uneven, and then the water in the first water container is caused to flow down to the extraction chamber. Control means for controlling so as to obtain coffee in the receiver. Extractor.