JP2004008663A - Coffee maker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coffee maker with an external heat source of an induction heating means by which extraction including heat insulating can be easily carried out. <P>SOLUTION: This coffee maker is equipped with a heated plate 12 heated by the magnetic field generated on an induction heating means 11, a water vessel 13 heated by the heated plate 12, a storing receptacle 18 for coffee extract liquid and a water raising tube 16 for guiding water to a coffee extraction chamber 15 so that the coffee extract liquid is stored in the storing receptacle 18. The heated plate 12 comprises a material with magnetic permeability lowered at a prescribed temperature not to allow the temperature to be higher than the prescribed temperature.It is not necessary to remove the storing receptacle 18 from the means 11 immediately after the extraction . <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a coffee stove that extracts coffee liquid by supplying hot water from a hot water generator to coffee grounds.
[0002]
[Prior art]
In order to extract coffee using an external heat source 1 such as a stove or an electric heater as shown in FIG. 5, a conventional coffee boiler of this type uses a percolator or the like to stir coffee powder with hot water, After the components were extracted, coffee was extracted by removing an external heat source.
[0003]
[Problems to be solved by the invention]
However, in the above-mentioned conventional configuration, as shown in FIG. 5, water in a coffee boiler body 2 such as a percolator heated by an external heat source 1 rises up a water rising pipe 3 and is poured into a coffee extraction chamber 4, It was configured to extract coffee. Further, since the coffee extract 5 is heated again inside the main body 2 and poured into the coffee extraction chamber 4 again, the user determines by himself / herself to prevent over-extraction so as not to overextract. There was a problem that it had to be stopped and it was difficult to extract delicious coffee easily. Further, in the conventional configuration, if the heating from the external heat source 1 is left as it is, the coffee is boiled down, and there is also a problem that it is not possible to keep the temperature at an appropriate temperature.
[0004]
There is also an espresso coffee in which hot water is allowed to pass through hot coffee powder to extract coffee, but there is also a problem that ordinary coffee cannot be extracted because all tastes and unpleasant tastes are extracted.
[0005]
The present invention has been made to solve the conventional problems, and it is an object of the present invention to easily extract delicious coffee by preventing over-extraction when extracting coffee using an external heat source and by enabling heat retention. And
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned conventional problems, a coffee boiler of the present invention heats water in a water container with a heated plate heated by a magnetic field generated by an induction heating means, supplies the water to a coffee extraction chamber, and supplies a coffee extraction liquid. And the material of the plate to be heated is made of a material whose magnetic permeability changes at a preset temperature. Thus, by setting the extraction speed, the extraction state can be controlled, and the coffee extract can be kept at an appropriate temperature after the extraction is completed.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
The invention according to claim 1, wherein the induction heating means, a plate to be heated by a magnetic field generated by the induction heating means, a water container placed on the plate to be heated, and the water container A riser pipe for leading hot water heated through the heated plate to the outside, a coffee extraction chamber for extracting coffee with the hot water derived from the riser tube, and a coffee extract placed on the heated plate. A storage container for storing, wherein the heated plate is a coffee boiler using a material whose magnetic permeability changes at a set temperature, so that coffee can be extracted at a set hot water supply rate, and the temperature can be kept low by suppressing boiling. it can.
[0008]
According to a second aspect of the present invention, in the configuration of the first aspect, the heated plate on which the water container is placed and the heated plate on which the storage container is placed are separated from each other, so that the storage container alone has an appropriate temperature. Can be kept warm and warm again.
[0009]
According to a third aspect of the present invention, in the configuration of the second aspect, the heated plate on which the water container is mounted and the heated plate on which the storage container is mounted have different magnetic permeability. Extraction with high-temperature hot water can keep the coffee extract at any temperature that does not cause boiling.
[0010]
According to a fourth aspect of the present invention, in the configuration according to the fourth aspect, the induction heating unit, a plate to be heated by a magnetic field generated by the induction heating unit, and a plate mounted on the plate to be heated. A storage container for storing the coffee extract, a water container having a check valve at the bottom, a riser pipe connected to the check valve, and a part of the riser pipe embedded in the plate to be heated and A heating device for heating water in the water pipe, and a coffee extraction chamber for extracting coffee with hot water from a water rising pipe through the heating device, wherein the coffee boiler is made of a material whose magnetic permeability of the heated plate is reduced. By using a container, not only can the structure around the main body such as a water container be made inexpensively and freely with a thermoplastic resin or the like, but also the extraction speed can be controlled more easily.
[0011]
According to a fifth aspect of the present invention, in the configuration of the fourth aspect, a steaming step is added to the coffee extraction by intermittently supplying hot water from the riser pipe to the coffee extraction chamber by siphon means as a hot water supply means. Delicious coffee can be extracted.
[0012]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0013]
(Example 1)
FIG. 1 shows a coffee brewer according to Embodiment 1 of the present invention. In the figure, a heated plate 12 heated by a magnetic field generated on an induction heating means 11 which is a heating means from the outside is provided, and a water container 13 for pouring water has a configuration which can be sealed by a lid 14. , Is placed on the heated plate 12. Further, the water container 13 is connected to a water rising pipe 16 for guiding hot water to the coffee extraction chamber 15, and is connected to an upper part of a watering lid 17 provided above the coffee extraction chamber 15. The coffee extraction liquid extracted in the coffee extraction chamber 15 is configured to be stored in a storage container 18 placed on the heated plate 12. The plate to be heated 12 is made using a magnetic alloy such as clad steel. When a preset temperature (Curie temperature) is reached, the flow of magnetic flux is changed so that the magnetic permeability decreases. The temperature must not exceed the set temperature.
[0014]
The operation and operation of the coffee brewer configured as described above will be described below.
[0015]
The water charged into the water container 13 is heated and boiled in the water container 13 by the heated plate 12 heated by the magnetic field generated by the induction heating means 11, passes through the water rising pipe 16 due to the increased vapor pressure, and flows into the coffee container. It is poured into the sprinkling lid 17 on the extraction chamber 15. The coffee extract extracted by the coffee extraction chamber 15 is stored in the storage container 18 heated by the heated plate 12 and kept warm.
[0016]
When the temperature of the heated plate 12 reaches a set temperature, the magnetic permeability decreases and heat generation is suppressed, and the temperature is kept constant. Therefore, even when the water container 13 is heated, the temperature does not become excessively high, and at the set hot water supply rate, Hot water is supplied from the riser pipe 16 to the coffee extraction chamber 15. In addition, the storage container 18 storing coffee does not need to remove the storage container 18 from the induction heating device 11 immediately after extracting coffee because the heated plate 12 does not rise above the set temperature, so that coffee can be easily extracted. can do.
[0017]
(Example 2)
FIG. 2 shows a coffee brewer according to a second embodiment of the present invention. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. Only different points will be described.
[0018]
In this embodiment, the heated plate 11 in the first embodiment is divided into a heated plate 21 on which the water container 13 is placed and a heated plate 22 on which the storage container 18 is placed. It is configured so that it can be heated by the magnetic field generated by the means 11.
[0019]
Thus, the induction heating means 11 can be used only with the storage container 18, so that heat retention and reheating can be performed more easily.
[0020]
In addition, by changing the set temperature of the heated plate 21 for heating the water container 13 and the heated plate 22 for heating the storage container 18, the hot water supply speed from the water container 13 becomes suitable for coffee extraction. The temperature of the storage container 18 can satisfy both requirements of a temperature suitable for keeping coffee warm.
[0021]
(Example 3)
FIG. 3 shows a coffee brewer according to a third embodiment of the present invention. In the figure, reference numeral 31 denotes a main body of a coffee kettle formed of a resin material, and a water container 32 into which water is charged is provided. A check valve 33 is provided at the bottom of the water container 31 and is connected to a riser pipe 35 flowing through a heating means 34. The heating means 34 is heated by a magnetic field generated by the induction heating means 11 which is an external heat source, and is provided in thermal contact with a heated plate 36 for suppressing the temperature rise by changing the magnetic permeability when the temperature exceeds the Curie temperature. The water introduced from is heated together with the riser 35. A water quality improving device 37 made of activated carbon or the like is provided on the hot water supply port side of the riser pipe 35, and is configured so that hot water is effectively sprayed on the coffee powder from a sprinkling lid 39 provided at an upper portion of the coffee extraction chamber 15. ing. The coffee extract extracted from the coffee extraction chamber 15 is stored in a storage container 40 mounted on a heated plate 36 disposed on the heating means 34.
[0022]
The operation and operation of the coffee brewer configured as described above will be described below.
[0023]
The water charged into the water container 32 passes through the check valve 33, is introduced into the water rising pipe 35, and flows into the heating means 34 heated by the plate 36 to be heated. The hot water heated by the heating means 34 rises in the water pipe 35, passes through the water quality improvement device 37, is effectively watered by the watering lid 39, and is supplied onto the coffee powder in the coffee extraction chamber 15. When the water in the water container 32 runs out, the temperature of the heating means 34 rises, but when it reaches the Curie temperature, which is the set temperature of the heated plate 36, the magnetic permeability of the heated plate 36 changes and the temperature rises. Be suppressed.
[0024]
Therefore, since the temperature of the main body 31 does not rise more than necessary, the water container 32 can be made of a thermoplastic resin or the like, so that the water container 32 can be made easily, inexpensively, and freely attachable and detachable. it can. Further, the water quality improving device 37 can be easily provided, and delicious coffee can be extracted.
[0025]
Further, since the temperature of the heating means 34 can be set by the plate 36 to be heated, the rate of hot water supply to the coffee extraction chamber 38 can be adjusted, so that delicious coffee can be extracted under conditions more suitable for coffee extraction.
[0026]
(Example 4)
FIG. 4 shows a coffee brewer according to Embodiment 4 of the present invention. The same components as those in the already described embodiment are denoted by the same reference numerals, and description thereof will be omitted. Only different points will be described. In the present embodiment, a hot water storage means 41 having a siphon action is provided between the rising pipe 35 and the coffee extraction chamber 15. In the hot water storage means 41, a lid member 41a having a downward opening is provided with a gap 41b with the bottom surface of the hot water storage means 41, and a pipe 41c which protrudes into the lid member 41a from the bottom surface and acts as a siphon is provided. . Thus, when hot water is stored up to the upper portion of the lid member 41a, the hot water is discharged from the hot water supply port 42 through the pipe 41c by a siphon action.
[0027]
When an excessive amount of heat is applied from the external induction heating means 11 to the heating means 34 via the heated plate 36, the hot water supply speed becomes too fast, and the hot water always remains in the gap 41b of the hot water storage means 41 which acts as a siphon. And the hot water is discharged from the hot water supply port 42 without interruption.
[0028]
However, since the temperature of the heating means 34 does not rise more than necessary by the heated plate 36, the speed of hot water supply to the hot water storage means 41 is suppressed, and after hot water is discharged from the hot water supply port 42 over the upper part of the lid member 41a, The air is taken into the hot water storage means 41 from the hot water supply port 42 through the gap 41b, and then intermittent hot water supply in which the hot water is not discharged from the hot water supply port 42 until the hot water exceeds the upper portion of the lid member 41a is repeated. This time is a steaming step after hot water is applied to the coffee powder, so that delicious coffee can be extracted.
[0029]
【The invention's effect】
As described above, according to the first to third aspects of the present invention, it is possible to provide a delicious coffee that is not affected by an external heat source, suppresses overextraction, and suppresses clogging during warming. According to the fifth aspect of the present invention, by adding a configuration in which hot water is poured into coffee powder intermittently, rich and delicious coffee can be extracted.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a coffee machine showing a first embodiment of the present invention. FIG. 2 is a cross-sectional view of a coffee machine showing a second embodiment of the present invention. FIG. 3 is a coffee machine showing a third embodiment of the present invention. FIG. 4 is a cross-sectional view of a coffee brewer showing a fourth embodiment of the present invention. FIG. 5 is a cross-sectional view of a conventional externally heated coffee brewer.
11 Induction heating means 15 Coffee extraction chamber 16, 35 Water riser pipe 12, 21, 22, 36 Heated plate 13, 32 Water container 18 Storage container 34 Heating means 41 Hot water storage means (siphon means)

Claims (5)

Induction heating means, a heated plate heated by a magnetic field generated by the induction heating means, a water container placed on the heated plate, and heated from inside the water container via the heated plate. A riser pipe for drawing hot water to the outside, a coffee extraction chamber for extracting coffee with the hot water drawn from the riser pipe, and a storage container placed on the plate to be heated and storing a coffee extract, and The heating plate is a coffee brewer that uses a material whose magnetic permeability decreases at a set temperature. The coffee brewing machine according to claim 1, wherein the heated plate on which the water container is placed and the heated plate on which the storage container is placed are separated from each other. The coffee brewing apparatus according to claim 2, wherein the heated plate on which the water container is mounted and the heated plate on which the storage container is mounted have different magnetic permeability. Induction heating means, a heated plate heated by a magnetic field generated by the induction heating means, a storage container for storing the coffee extract placed on the heated plate, and a water container having a check valve at the bottom A riser pipe connected to the check valve; a heating means for burying a part of the riser pipe in the plate to be heated to heat water in the riser pipe; and a riser pipe via the heating means. A coffee extraction chamber for extracting coffee with hot water from a hot plate, wherein the magnetic material of the plate to be heated uses a material having a low magnetic permeability at a set temperature. The coffee boiler according to claim 4, wherein hot water is supplied intermittently by a siphon means as a means for supplying hot water from the riser pipe to the coffee extraction chamber.

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