JP2001112631A - Coffee maker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coffee maker capable of obtaining coffee which tastes good even after warming for a long period. SOLUTION: This coffee maker is provided with an inner lid 6, which is linked with moving of a liquid surface with the variation of the liquid of coffee in a coffee vessel 5 and covers not smaller than 90% of the liquid surface and when a coffee liquid is warmed, a heater 3 operates with power being not more than 50% with that when the coffee liquid is brewed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coffee brewing machine, and more particularly to a method for maintaining the temperature of an extracted coffee liquor.

[0002]

2. Description of the Related Art In a conventional coffee machine, as shown in FIG. 5, a coffee container 5 is covered with a lid 7 but is not sealed, and is kept warm with the same electric power as at the time of extraction (for example, Japanese Patent No. 2810564). ).

Alternatively, as shown in FIG. 6, coffee liquid is stored in a coffee container 5 formed of a vacuum-insulated airtight container, and power is not supplied at the time of heat retention (for example, JP-A-4-58914). ).

[0004]

In the conventional coffee brewing machine, in the former case, the temperature of the coffee is maintained, but the evaporation of water from the coffee liquid surface is active (30 to 4 times per hour).
0 ml), and there was a problem that the taste of coffee was easily changed. In addition, there was also a problem that when the amount was originally small, it was boiled down and could not be drunk.

[0005] On the other hand, in the latter, although the evaporation is small due to the closed container, the electric power is not supplied, so that the container becomes gradually warm.
Further, there is a problem that the amount of coffee inside is difficult to understand because the outer wall is opaque.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has an inner lid interlocked with the movement of the liquid level accompanying a change in the amount of coffee in a coffee container; The inner lid covers 90% or more of the liquid level.

When the coffee liquid is kept warm, the apparatus is operated with 50% or less of the electric power required for extracting the coffee liquid.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention comprises a main body, a water container integrally or detachably provided on the main body, a heating body for heating water discharged from the water container, a coffee body for receiving coffee powder and a heating body. In a coffee boiler including a coffee filter that receives heated water and filters a coffee liquid and a coffee container that is located below the coffee filter and that is formed of a transparent material that stores filtered coffee, The middle lid, which covers 90% or more of the liquid level, is provided so as to be able to move up and down as if suspended from the container lid in conjunction with the movement of the liquid level accompanying the change in the amount of coffee.

In addition, when the heating body keeps the coffee liquid warm,
The operation is performed with 50% or less of the electric power at the time of extracting the coffee liquid.

[0010] By adopting such a configuration, the evaporation of water from the coffee liquid surface during the heat retention is suppressed.
Separation of water and coffee components in the coffee liquid is suppressed,
Since the change in taste is kept small and the dissipation of heat due to evaporation from the coffee liquid is suppressed, the warming temperature of the coffee liquid can be maintained with a small amount of electric power.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a sectional view of a coffee brewer according to an embodiment of the present invention, and FIG. 2 is a front view of the same. FIG. 3 is a perspective view of the main part, and FIG. 4 is an electric circuit diagram.

In FIG. 1, reference numeral 1 denotes a main body, which is formed of a soft resin such as PP resin, and a water container 2 is formed integrally with the main body 1. Reference numeral 3 denotes a heating element, which is incorporated in the upper surface inside the lower end of the main body 1 to heat water from the water container 2 and to keep the glass coffee container 5 placed on the upper surface of the heating element 3 in a heat-retaining function. It also serves as.

The water in the water container 2 is supplied to a check valve (not shown).
Is guided to the heating element 3 through a water guide pipe (not shown) having the above-mentioned structure, and the temperature is raised here.

On the other hand, a coffee filter 4 for receiving coffee powder is detachably mounted at a position above the coffee container 5 of the main body 1. Hot water from the heating element 3 passes through the rising pipe 8 and is discharged from a tapping arm 9 connected to the end thereof.

The coffee liquid filtered and extracted in the coffee filter 4 flows down to a coffee container 5 below the same through a drip prevention valve 10 provided at the lower end of the coffee filter 4.

The coffee container 5 has a cylindrical shape and a constant upper and lower diameter. As shown in FIG. 3, the container lid 7 covering the opening of the coffee container 5 has a thick-walled heat-insulating structure formed by foaming, and protrudes from the center of the lower surface toward the bottom surface of the coffee container 5, and the tip is one step in a spherical shape. It has a thick rod-like portion 11.

Reference numeral 6 denotes a middle lid, which is detachably fitted to the rod-shaped portion 11 of the container lid 7, and is attached so as to be able to freely move up and down after being fitted. The inner lid 6 has a diameter of 98% of the inner diameter of the coffee container 5 and a specific gravity of less than 1 and 1
It is formed in a circular shape with a thin plate of a heat-resistant material (eg, polypropylene) having a temperature of 00 ° C. or higher.

FIG. 4 shows a control circuit. The control is performed by a main circuit switch 12 and a timer switch 13. When the main circuit switch 12 is turned on, the circuit of the timer switch 13 is energized. . The timer switch 13 is a mainspring-type 10-minute meter. During the timer operation, 100 V is applied to the heating element 3, and the heating element 3 is heated at, for example, 600 W to extract coffee.

When the timer switch 13 is turned off, a warming operation is performed, and electric power is applied to the heating element 3 via the dropper resistor 14 so that the electric power becomes 50% or less of that at the time of coffee extraction (in the present embodiment, 1/20 of electric power). Insulation with electric power, ie, 30 W). A thermostat 15 is attached to the heating element 3 and is controlled so as not to heat more than necessary during the timer operation (extraction) and the heat retention operation.

Next, the operation of this embodiment will be described. First, an appropriate amount of coffee powder is put into the coffee filter 4 and an appropriate amount of water is put into the water container 2, the timer switch 13 is set, and the main circuit switch 12 is turned on.

The water in the water container 2 is guided to the heater 3 and is heated by the heater 3 to become hot water. The hot water is poured into the coffee filter 4 through the rising pipe 8. The coffee liquid filtered and extracted in the coffee filter 4 flows down to a coffee container 5 below the same through a drip prevention valve 10 provided in the coffee filter 4.

The coffee liquid dropped on the coffee container 5 is
First, the coffee container 5 is inserted into the coffee container 5 through the central opening of the container lid 7, and is stored at the bottom of the coffee container 5 through the rod-shaped portion 11 and the middle lid 6 provided in the container lid 7 and the gap between the coffee container 5 and the middle lid 6. Is what is done.

At this time, the inner lid 6 floating on the coffee liquid level in the coffee container 5 rises as the liquid level rises. Therefore, the inner lid 6 is always in a state of covering the coffee liquid level.

When the timer switch 13 is turned off after the coffee is extracted, the temperature is automatically switched to the thermal insulation, and the thermal insulation is started with electric power of 50% or less at the time of the coffee extraction, and the coffee liquid temperature is maintained at about 80 ° C. is there.

[0025]

As described above, according to the structure of the present invention, since the coffee liquid surface is always covered with the inner lid, the evaporation of the water from the coffee liquid surface is suppressed, and the separation of the water from the coffee liquid and the coffee component is achieved. Suppressed, the change in taste is kept small, and a delicious coffee can be obtained for a long time.

Further, since the dissipation of heat due to evaporation from the coffee liquid is suppressed, the effect of maintaining the temperature of the coffee liquid with a small amount of power, that is, an energy saving effect is also obtained.

[Brief description of the drawings]

FIG. 1 is a sectional view of a coffee brewer showing one embodiment of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a perspective view of an essential part of the same.

FIG. 4 is an electric circuit diagram.

FIG. 5 is a cross-sectional view of a conventional coffee machine.

FIG. 6 is a cross-sectional view of a coffee machine showing another conventional example.

[Explanation of symbols]

 1: body 2: water container 3: heating body 4: coffee filter 5: coffee container 6: middle lid

Claims (2)

[Claims] 1. A body (1), a water container (2) integrally or detachably provided on the body (1), and a heating element (3) for heating water discharged from the water container (2). A coffee filter (4) for receiving coffee powder and receiving hot water heated by the heating element (3) and filtering the coffee liquid; and a transparent filter which is located below the coffee filter (4) and stores the filtered coffee. Coffee container made of material (5)
And a middle lid (6) that is interlocked with the movement of the liquid level due to the change in the amount of coffee in the coffee container (5) and that covers at least 90% of the liquid level. A coffee kettle characterized by the above. 2. The coffee brewing machine according to claim 1, wherein the heating element is operated at a power of 50% or less when extracting the coffee liquor when the coffee liquor is kept warm.