JPH0630121Y2 - Coffee extractor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a coffee extractor having an improved heater device.

(Prior Art) Conventionally, in a general coffee extractor, a cloth filter type, a percolator type, a siphon type and the like are known, but for the siphon type, a water pipe 1 is provided at a lower portion as shown in FIG. Attach the cloth filter 3 to the bottom of the upper container 2 that had and put in the ground coffee powder beforehand. Then, after pouring water or hot water into the flask-shaped lower container 4, the upper container 2 is inserted, fixed to the main body 5, and heated by the heater device 6 installed below the lower container 4. When the hot water in the lower container 4 boils, the hot water moves up the water pipe 1 to the upper container 2 due to its vapor pressure. When the heater device 6 is turned off after all the hot water has moved to the upper part and mixed with the coffee powder, the pressure in the lower container 4 decreases and the hot water mixed with the coffee powder in the upper container 2, that is, the coffee liquid, is absorbed by the cloth filter 3 And then descends into the lower container 4 again. Thus, the extraction of the coffee liquid is completed.

As shown in FIG. 4, the heater device 6 has a main body 7 having a substantially cylindrical shape and an opening 7a in the upper portion.
The opening 7a is closed by a substantially tray-shaped fitting 8 fitted and attached to the opening 7a. The fixture 8 has a groove 9a at the top. A coil-shaped heating element 9b made of, for example, a nichrome wire is fitted and attached to the insulator 9 and the groove 9a, and the lower container 4 is positioned above the insulator 9.

(Problems to be solved by the invention) However, in the above-mentioned one, since the portion for mounting the lower container of the heater device has the groove of the insulator, the cleaning property is very poor, and the lower container is generated when the heater device generates heat. Since there is a relatively large amount of heat released into the main body of the heater device other than the part on which the heater is mounted, it is necessary to consider a heat insulating structure, which is a serious limitation in manufacturing the heater device.

Therefore, the present invention is made to eliminate the above-mentioned conventional defects,
It is an object of the present invention to provide a coffee brewer which has a good cleaning property of the heater device and can minimize heat release into the main body of the heater device.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention comprises an extraction container for extracting coffee liquid and a heater device for heating the extraction container from below. The heater device is provided with a placing plate on which the extraction container is placed, a heater provided below the placing device, a heater provided in a non-contact state with the heater, and the diameter gradually increases toward the lower side. A donut-shaped mounting plate support having a plurality of ventilation holes on the inclined peripheral wall to hold the mounting plate above, and the heater surrounding the lower side and the side surface of the mounting plate and the mounting plate lower surface. And a reflector plate which is smaller in diameter than the peripheral wall of the mounting plate support and which is provided in a non-contact state with the heater and reflects heat of the heater, and the heater and the peripheral wall of the mounting plate support. The ventilation holes provided in the Gap provided between the plate are those configured to be positioned substantially equal height.

(Function) When coffee liquid is extracted, electricity is supplied to the heater to heat the extraction container by the heat generated by the heater. At this time, the reflection plate surrounding the heater on the lower side and the side surface prevents heat reflection from the heater to the lower side. Further, since a gap is provided between the upper end of the reflecting plate and the lower surface of the mounting plate, it is difficult to transfer the heat of the mounting plate to the reflecting plate. The plurality of vent holes provided in the peripheral wall of the mounting plate support releases the heated air in the heater portion to the outside and prevents heat conduction from the mounting plate to the mounting plate support.

(Embodiment) An embodiment in which the present invention is applied to a coffee making machine with a mill function will be described below with reference to FIGS. 1 and 2.

First, in FIG. 1, 11 is a main body, and a motor 12 is provided inside.
Are installed. A mill case 1 having a cutter 13 that interlocks with the motor 12 in the previous period is provided inside the main body 11
4 is provided, and the mill case 14 is covered with a mill lid 15 at the top. Further, there is a mill filter 14a on the side surface of the mill case 14, and the coffee powder properly crushed by the cutter 13 can pass through the mill filter 14a. The coffee powder that has passed through the mill filter 14a is guided by the guide 16 into the upper container 17. A filter 18 is installed at the bottom of the upper container 17, and the filter stopper 19 to which the filter 18 is connected passes through a pipe 20 extending downward from the bottom of the upper container 17 and is locked to the tip of the pipe 20. ing. Further, with the filter 18 attached, the upper container 17 is closely fitted to a substantially flask-shaped lower container 22 via a packing 21 fitted in the vicinity of the base of the pipe portion 20. The upper container 17 and the lower container 22 constitute an extraction container 23. Main body 1 at the bottom of this extraction container 23
1, a heater device 24 is attached to the heater device 24. The heater device 24 is a flat plate-shaped mounting plate 25 on which the lower container 22 is mounted.
There is a donut-shaped mounting plate support 26, and the mounting plate support 26 has a plurality of ventilation holes 26b in an upper part of an inclined peripheral wall 26c whose diameter gradually increases as it goes downward. The mounting plate 25 is attached so as to fit into the opening 26a of the mounting plate support 26. Also, insulator 2
The coil-shaped heater 27 supported by 7a is provided below the mounting plate 25 in a non-contact state, and the substantially tray-shaped reflection plate 28 reflects the heater 27 so as to surround the lower side and the side surface thereof. It is attached by a plate support 28a. The reflecting plate 28 does not reach the mounting plate 25, a gap 29 is provided between the reflecting plate 28 and the mounting plate 25, and the heater has a smaller diameter than the peripheral wall 26c of the mounting plate support 26. And is provided in a non-contact state.

Next, the operation of the above configuration will be described.

First, a desired amount of coffee beans and water (or hot water) are put in the mill case 14 and the lower container 22, and set in the main body 11. Then, the coffee beans are crushed by the cutter 13 by operating the motor 12 for a predetermined time by a timer (not shown) that sets a predetermined mill time. Mill case 1
The coffee powder crushed in No. 4 passes through the mill filter 14a and falls into the upper container 17. When the mill finishes, energization of the heater 27 is started to heat the lower container 22.

At this time, the insulator 27a supporting the heater 27 is also heated, and heat is radiated from the whole, and the heat is trapped inside the heater device 24. However, a gap 29 is placed between the mounting plate 25 and the reflection plate 28.
Since the mounting plate support 26 is provided with the vent holes 26b, the mounting plate support 26 is provided with other than the mounting plate 25, that is, the heater device 2
The heat radiated into the inside of the gap 4 and the vent 2
It is discharged to the outside of the heater device 24 through 6b. Further, the reflection plate 28 plays a role of blocking heat from the heater 27. Then, the mounting plate 25 is heated much by the heater 27 to boil the water in the lower container 22.
Then, this boiling pressure causes the water to rise into the upper container 17. Then, the coffee grounds and the hot water are mixed, and when properly mixed, the power supply to the heater 27a is cut off. Then, the pressure in the lower container 22 becomes negative with respect to the atmospheric pressure, and the mixed liquid of coffee powder and hot water in the upper container 17 passes through the filter 18 again to become coffee liquid and falls into the lower container 22. The extraction is complete.

In this way, by providing the mounting plate 25, even if coffee liquid or the like is spilled, it can be stopped by the mounting plate 25, so that cleaning does not enter the inside of the heater device 24 and cleaning is simplified. Further, since the mounting plate support 26 is provided with the ventilation port 26b and the gap 29 is provided between the reflection plate 28 and the mounting plate 25, the outside air and the air inside the heater device 24 can be circulated. Heat release to the inside of the heater device 24 can be prevented.

[Advantage of the Invention] According to the present invention, a placing plate for placing the extraction container is provided, a gap is provided between the placing plate and the reflecting plate, and a plurality of ventilation holes are provided in the peripheral wall of the placing plate support. As a result, the air inside the heater device and the outside air are circulated, and the temperature rise inside the heater device can be prevented. Further, by providing the mounting plate, even if coffee liquid or the like is spilled, the mounting plate can prevent the invasion into the heater device, and even if it gets dirty, it is only necessary to clean the vicinity of the mounting plate, and the cleaning performance is very good. A coffee extractor can be provided.

[Brief description of drawings]

FIGS. 1 and 2 show an embodiment in which the present invention is applied to a coffee making machine with a mill function, FIG. 1 is an overall longitudinal sectional view, FIG. 2 is a top view showing the position of a vent, and FIG. FIGS. 4 and 5 show a conventional example, FIG. 3 is an overall perspective view of a siphon-type coffee extractor, and FIG. 4 is a vertical cross-sectional view of a heater device. In the drawing, 23 is an extraction container, 24 is a heater device, 25 is a mounting plate, 26 is a mounting plate support, 26b is a vent, 26c is a peripheral wall, 27 is a heater, 28 is a reflecting plate, and 29 is a gap.

Claims (1)

[Scope of utility model registration request] 1. A brewing container for brewing coffee liquid,
A heater device for heating the extraction container from below, wherein the heater device has a mounting plate on which the extraction container is mounted, and a heater provided below the mounting plate.
A donut-shaped mounting plate support that is provided in a non-contact state with this heater, has a plurality of ventilation holes in the inclined peripheral wall that gradually increases in diameter as it goes downward, and holds the mounting plate above it. The heater is surrounded by the lower side and the side surface thereof, and a gap is provided between the heater and the lower surface of the mounting plate. The heater has a smaller diameter than the peripheral wall of the mounting plate support and is provided in a non-contact state with the heater to reflect the heat of the heater. And a heater, and
A coffee brewer characterized in that the ventilation holes provided on the peripheral wall of the placing plate support and the gap provided between the lower face of the placing plate and the reflecting plate are located at substantially the same height.