JPS6027530B2 - coffee boiler - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drip type coffee boiler that extracts coffee by dripping hot water onto coffee grounds, and by varying the temperature of the hot water used to extract coffee, various flavors of coffee can be produced. It is possible to adjust the temperature of the finished product and the finished temperature, and it is possible to always extract good and delicious coffee regardless of the coarseness of the coffee powder, from fine to coarse, and to extract delicious coffee regardless of the amount of coffee powder. The purpose is to

In general, drip-type coffee boilers heat water supplied from a water tank in a heating pipe, raise the water in the pipe by the force of air bubbles and steam, and pour the hot water that has risen in the pipe into a basket containing coffee grounds. Coffee is obtained by discharging and dripping from above, but with the conventional one-way dispensing method, the coarseness of the coffee beans is specified, and the finished temperature and flavor are determined by the container itself. The target could only produce taste (limited taste).

The present invention overcomes these drawbacks and achieves the intended objectives, and embodiments of the invention will now be described with reference to the accompanying drawings. In the figure, 1 is a roughly L-shaped upper container, which has a water tank 2 and a canopy part 3. The canopy part 3 has a roughly hemispherical sprinkling lid 4 having a downwardly concave surface, and supports this sprinkling lid 4. A substantially cylindrical water sprinkling lid stand 5 is attached.

A hole 6 is provided in one wall of the sprinkler lid stand 5, and a discharge pipe 7 made of a material such as silicone rubber penetrates through the water. One end of the discharge pipe 7 is connected to the rising water pipe 8, and the pond end is open □, and discharge ports 9a,
9b, and is provided at the lower center of the water sprinkling lid 4. Further, a rotary valve 25 made of a resin material or metal that fits the opening part 9c of the discharge pipe 7 is held on an extension of the discharge pipe 7 by penetrating the hole 6' in the wall of the sprinkler lid stand 5. has been done. A rotary lever 24 is provided on one end of the rotary valve 25, and the other end has a semi-cylindrical shape and is connected to the discharge ports 9a, 9.
b is provided in a position where it can be closed. The heating element is made of die-cast aluminum and includes a heating element, for example, a sheathed heater 11 and a heating pipe 12.

The heating pipe 12 has one end connected to the water tank 2 of the upper container 1 via a check valve 13 that prevents water from flowing from the heating pipe 12 to the tank 2, and the other end connected to the water rising pipe 8. has been done. Reference numeral 14 designates a glass container, and a heating element 10' is attached to the container through a heat insulating plate 15 made of a material with good thermal conductivity such as an aluminum plate, and a coffee basket 16 is attached to the upper part.

The coffee basket 16 has a V-shaped recess 17 in the center.
A hole 18 is provided at the bottom of the V-shaped recess 17. A filter paper 19 is attached to this V-shaped depression 17, and coffee powder 20 is placed therein.

21 is a lower container that covers the heating element 10 and the like, and 22 is an upper lid.

Note that the space surrounded by the sprinkler lid 4 and the sprinkler lid stand 5 is provided in a state where it is completely communicated with the atmosphere. Next, the operation in the above configuration will be explained.

When the coffee basket 16 is lined with filter paper 19, coffee powder 20 is placed in it, water is poured into the water tank 2, and electricity is applied to the heating element 11, the water flowing into the heating pipe 12 is heated, boils, generates steam, and rapidly Expands in volume. Since the expanded hot water is prevented from flowing toward the water tank 2 by the check valve 13, it rises through the rising pipe and reaches the discharge port 9a of the discharge pipe 7.
It is then discharged and dripped onto the coffee grounds 20 to push out the coffee components and accumulate as coffee liquid in the glass container 14 below. The above is an outline of the operation, which will be further explained in detail. FIG. 2 is a diagram with the rotary lever 24 facing downward. In this state, the rotary valve 25 has a semi-cylindrical shape. 9a is closed, and the downward discharge port 9b is opened.

In this state, hot water heated from the heating element 10 passes through the rising pipe 8 and rises, passes through the discharge pipe 7, and is discharged downward from the discharge port 9b to extract coffee components.

At this time, the hot water discharged from the discharge port 9b falls directly onto the coffee grounds without being cooled and extracts coffee at a high temperature.
The bitterness and sourness of coffee is extracted to the optimum degree, making it delicious.
And the coffee is hot. Furthermore, if the coffee powder is fine, the hot water tends to concentrate at one point in the center of the powder 20, so that the coffee powder looks like it is dug in, which prevents clogging of the paper 19 and produces delicious coffee.

FIGS. 3 and 4 are diagrams when the rotary lever 24 is in the upward direction. At this time, the rotary valve 25 closes the downward discharge port 9b and the upward discharge port 9a. The hot water is discharged upward, hits the sprinkler lid, is dispersed, and falls onto the coffee grounds 20.

At this time, the hot water discharged from the outlet 9a hits the sprinkling lid 4, falls along the inner wall surface of the sprinkling lid 4, that is, the concave surface, drips from the lower end entrance 23 of the sprinkling lid stand 5, and sprinkles on the coffee grounds. Since the coffee is poured, it is cooled during this time, and the temperature is lower than in the case of the downward discharge method, so the coffee is extracted without extracting any excess components, resulting in a very mild coffee.

Furthermore, if the coffee powder is coarse, the permeation speed of the powder is fast, and the above configuration in which the hot water hits the center cannot sufficiently extract the components of the coffee powder 20 as a whole. You can make better coffee by pouring hot water into the pot.

FIG. 5 shows an intermediate state between the above-mentioned two types, and when the rotary lever 24 is moved in the horizontal direction, the rotary valve 25 closes approximately half of the upper discharge port 9a and the lower discharge port 9b, respectively, as shown in FIG. Therefore, the hot water is discharged both upward and downward and is poured onto the coffee.

In this case, the extraction method and temperature are intermediate between the above-mentioned upward discharge and downward discharge.

The above three types of operation are possible, but of course, if hot water is to be discharged from both the upper discharge port 9a and the lower discharge port 9b, the upper and lower discharge ports 9a, 9b can be adjusted by appropriately rotating the rotary lever 24. The ratio of hot water discharged can be changed arbitrarily.

When the water in the water tank 2 runs out, the temperature of the heating element 10 rises rapidly. Sensing this, a temperature regulator (not shown) starts operating and keeps the temperature of the heating element 10 constant, so that the coffee in the glass container 14 is kept at a constant temperature.
As is clear from the above description, according to the coffee boiler of the present invention, hot water can be discharged in any direction, so coffee with different coffee extract components can be obtained at any temperature.

In other words, if you turn it upward, the coffee will have a milder taste due to the lower extraction temperature, and if you turn it downward, it will have a traditional coffee taste. Moreover, no matter how coarse the coffee grounds are, the method of pouring hot water that is appropriate for the condition is selected, and the maximum amount of the components of the beans can be extracted. Furthermore, the top area of the coffee grounds in the coffee basket differs depending on the amount of beans, so when there is little coffee grounds, this top area is small, so hot water is discharged downward, and when there are a lot of coffee grounds, the coffee is evenly distributed. By directing the hot water to flow upwards, as if pouring it over the powder, you can get the ideal amount of coffee from 1 cup to the largest cup.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of a coffee boiler showing an embodiment of the present invention, Fig. 2 is a cross-sectional view of the same main part showing a state in which the rotary valve faces downward and the discharge direction is directed downward, and Fig. 3 shows the rotary valve. FIG. 4 is a cross-sectional view of the same essential parts showing a state where the discharge port is facing upward and the discharge direction is upward. FIG. 4 is a cross-sectional view of the discharge port and the rotary valve in the same state.
The figure is a cross-sectional view of the same main part showing a state in which the rotary valve is oriented horizontally and the discharge direction is upward and downward, and discharges in both directions at the same time. FIG. 6 is a cross-sectional view of the discharge port and the rotary valve in the same state. 2...Water tank, 4...Sprinkling lid, 7...Discharge pipe, 8...Water rising pipe, 10...Heating element, 12...Heating pipe , 13...Check valve,
16... Coffee basket, 25... Rotary valve. Figure 1 Figure 2 Figure 3 Figure 4 Figure 6 Figure 5

Claims (1)

[Claims] 1. One end of a heating pipe equipped with a heating device is connected to a water tank via a check valve, the other end is connected to a water rising pipe, and the upper end of the water rising pipe is used to filter coffee powder. In the coffee boiler, the basket is opened at the top, a container for receiving coffee liquid is provided at the bottom of the basket, and a concave water sprinkling lid is provided above the opening of the water riser pipe, and the water riser pipe is opened in the direction of opening of the water riser pipe. A coffee boiler characterized in that it can be opened and closed in both directions, and can be opened and closed. 2. The coffee boiler according to claim 1, wherein the discharge pipe is opened at the top and bottom at the same time, so that the ratio of the amount of hot water in the vertical direction can be adjusted freely. 3. A part of the water rising pipe is made into a substantially T-shaped discharge pipe having openings in the upward and downward directions, and a semi-cylindrical rotary valve is provided in the vertical branch path, and by operating this rotary valve. 2. The coffee brewer according to claim 1, characterized in that the upper and lower openings are opened and closed.