JPS62213711A - Coffee maker - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a coffee maker.

[Summary of the Invention] This invention relates to a coffee maker that makes coffee by dripping powdered coffee raw materials, and a raw material storage part of a dripper body that stores hot water in a lower container from a rising passage through the coffee raw material filter. inject above the
While sufficiently stirring the coffee raw material with the hot water, by returning the coffee extract filtered through the filter into the lower container from a descending passage formed separately from the ascending passage,
This coffee maker combines the functions of a siphon type and a drip type, making it possible to efficiently bring out the taste, aroma, and richness of coffee ingredients.

[Conventional technology] As a coffee making device, a siphon type and a parcoler are used.
Various types of coffee makers are known, such as coffee makers, drip coffee makers, and electric coffee makers.

The above-mentioned siphon type increases the supply of hot water in the lower container to the upper container containing powdered coffee raw materials through a filter, and returns the coffee extract filtered by the filter to the lower container. This is carried out using a single riser pipe that is integrally formed with the container.

In the percolator type, the hot water in the container is sent from the rising pipe to the dripper body that stores the coffee ingredients located at the top of the container, and the coffee extract that has passed through the dripper body is dripped again into the remaining hot water in the container. It circulates the process.

In the drip type, hot water is boiled in a pot, etc., and powdered coffee ingredients are stored through a filter and injected into the dripper body, and the coffee extract filtered by the filter is stored in the lower container. It is.

In addition, an electric coffee maker heats water stored in a water tank with a heater, sends the hot water to the dripper body that stores the coffee ingredients, filters it with a filter, and stores the coffee extract in the lower container.

[Problems to be Solved by the Invention] In the siphon type, the powdered coffee ingredients float to the top of the hot water when hot water is supplied to the upper container, so unless stirred with a stirring rod or the like, the coffee ingredients will not flow. There was a drawback that the coffee components could not be extracted sufficiently unevenly. Additionally, since the scum extracted from the coffee powder during stirring is also dissolved, the aromatic and rich flavor cannot be extracted unless the coffee extract is filtered again to remove the scum. . Furthermore, since both the upper and lower containers are made of glass,
It was easy to break due to fatigue over time.

In the percolator type, the coffee extract is circulated and reheated, which has the disadvantage that the important aroma of the coffee ingredients is lost.

In addition, the drip type has the disadvantage that it is very time-consuming because the pot or the like must be held by hand to gradually pour the liquid into the dripper body.

Furthermore, electric coffee makers are equipped with a tank for storing water, making the structure complex and large.
This had the disadvantage of increasing manufacturing costs.

Therefore, the present invention provides a coffee maker that can efficiently extract coffee components and bring out a rich and aromatic taste.

[Means for Solving the Problems] The coffee maker of the present invention includes a dripper main body having a raw material storage part in the upper part for storing powdered coffee raw materials through a filter, and a bottom part serving as a heating part.
A lower container in which a sealed space is formed when the dripper main body is placed thereon, and a riser that communicates between the sealed space and the upper side of the raw material storage section and sends the hot water in the lower container to the upper side of the raw material storage section. A passage communicates between the sealed space and the lower part of the raw material storage part, and has a check valve that prevents the upward flow of the hot water, and a downward flow that returns the filtered coffee extract into the lower container. It is equipped with a passageway.

[Operation: The hot water in the lower container is sent from the rising passage to the upper part of the raw material storage part of the dripper body, which stores the powdered coffee raw material through a filter. By injecting hot water into the coffee ingredients from above the rice grain, the coffee ingredients are stirred and sufficiently uniformed. The coffee extract from which the coffee components have been efficiently extracted in this way is filtered through a filter and returned to the lower container from the descending passage.

[Example code] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In FIGS. 1 to 5, reference numeral 1 indicates a coffee maker. This coffee maker 1 includes a funnel-shaped dripper body 2 and a lower container 3 on which the dripper body 2 is placed.
and a lid 4 that covers the upper end of the dripper body 2.

The dripper main body 2 includes a raw material storage section 20 into which a paper filter 5 is inserted and stored through an upper end opening 20a, an annular collar section 21 projecting horizontally on the lower outer periphery of this raw material storage section 20, and a raw material storage section. It has a cylindrical leg portion 22 extending downward from the center of the lower end of the columnar leg portion 20 . Raw material storage section 20
A plurality of vertically long ribs 20b are formed on the inner circumferential surface of the holder.

Further, a descending passage 23 is formed in communication from the center of the bottom of the raw material storage section 20 to the center of the lower end of the leg section 22 . A ball 24 made of polypropylene, for example, is held in a holder 25 at the bottom of the descending passage 23 as a check valve that prevents upward inflow of fluid from below and allows downward inflow of fluid from above. . Furthermore, a rising passage 2 extends from the upper end opening 20a of the raw material storage section 20 to the lower end of the leg section 22.
6 is connected to each other. The rising passage 26 is formed by molding the inner body 2a and the outer body 2b of the dripper body 2 separately from heat-resistant polycarbonate or the like, and as shown in FIG. thick ribs 2
c is integrally molded, and this rib 2c abuts on the outer peripheral surface of the inner main body 2a and is fixed with an adhesive or the like.
A ring-shaped upper and lower guide portion 27a is fixed to the upper end of the inner circumferential surface of the portion a with an adhesive or the like.

It communicates with a passage 27c formed between 27b and 27b. still,
A handle 2d is integrally formed on the upper end of the outer body 2b and the flange 21.

The flange 21 includes a horizontal plate 21a and an annular plate 21b hanging from the center of the lower surface of the horizontal plate 21a.
It is made up of. The outer peripheral surface of this annular plate 21b is tapered inward from the middle, and a rubber O-ring 2 is inserted into a recess 21c formed in this tapered part.
8 is fitted. Further, as shown in FIG. 2, a wedge-shaped step 21d protruding downward is formed on a part of the lower surface of the horizontal plate 2La on the outside of the annular plate l-21b. As shown in FIGS. 1 and 6, four stands 29 are integrally molded in a cross shape on the lower surface of the ring plate 21a (horizontal play from the circumferential surface) and the side surface of the leg portion 22 inside the annular plate 21b. A recess 29a is formed in the lower part of each stand 29, and the upper edge 6a of the saucer 6 as shown in FIG. 6 can be removably fitted into the recess 29a.

The lower container 3 has an upper end opening 30 . The upper end opening 30 is formed into a tapered shape (this portion is indicated by reference numeral 31) with a diameter expanding outward so that the diameter is slightly larger than the outer diameter of the tapered portion of the annular plate 21b. By placing the flange portion 21 of the dripper main body 2 on this tapered portion 31, a sealed space 32 is formed within the lower container 3. Furthermore, a well-known heating plate 33 that generates heat by the lines of magnetic force of an electromagnetic regulator (not shown) is embedded in the bottom 3a of the lower container 3. Furthermore, as shown in FIG.
A recess 3b corresponding to d is formed, and a scale 34 is provided on the outer peripheral surface. Note that, like the dripper body 2, the lower container 3 is resin-molded from heat-resistant polycarbonate or the like, and a handle 3d is integrally molded from the upper part to the lower part of the lower container 3.

An air hole 4a is bored in the center of the M4.

The lower edge 4b of the lid 4 has a groove 2 formed by the outer main body 2 of the dripper main body 2 and the guide part 27a.
7d so that it can be fitted.

When making coffee using the coffee maker 1 of the embodiment described above, water 7 is first poured into the lower container 3 along the desired scale 34. Next, the paper filter 5 is stored in the raw material storage part 20 of the dripper body 2, and an amount of powdered coffee raw material 8 corresponding to the amount of the water 7 that has been ground with a coffee mill (not shown) is placed in the paper filter. - Put it within 5. Then, the M4 is fitted into the upper end opening 20a of the dripper main body 2, and the flange 21 of the dripper main body 2 is placed on the tapered part 31 formed in the upper end opening 30 of the lower container 3.

At this time, as shown in FIG. 1 and FIG.
8 are brought into pressure contact and the two are completely sealed, so a sealed space 32 is formed within the lower container 3. From this state, when the lower container 3 is placed on an electromagnetic regulator (not shown), the heating plate 33 buried in the bottom 3a of the lower container 3 is heated by the magnetic lines of force of this electromagnetic regulator.

When the water 7 and air in the lower container 3 are heated by the heat generated by the heating plate 33, the water boils and becomes hot water and expands.
This hot water flows into the rising passage 26 of the dripper body 2 and the passage 2.
7c and enters the raw material storage section 20. At this time,
Since the descending passage 23 is closed by the ball 24,
Hot water does not enter the raw material storage section 20 from this descending passage 23.

Since hot water is injected from above the raw material storage section 20 in this way, the coffee raw material 8 in the raw material storage section 20 is thoroughly steamed while being automatically stirred. This makes it possible to fully bring out the taste, richness, and aroma of the coffee ingredients. Furthermore, as long as the heating plate 33 is heated and the hot water is rising in the ascending passage 26, the descending passage 23 is closed by the ball 24.

When the heating of the heating plate 33 is stopped when the injection of hot water into the raw material storage section 20 is completed, the coffee extract is heated by the weight of the coffee extract and the atmosphere flowing in from the air hole 4a.
It returns to the lower container 3 through the descending passage 23 which is filtered by the paper filter 5 and unblocked by the balls 24 .

Furthermore, the flange 21 of the dripper body 2 and the lower container 3 are
As the temperature inside the sealed space 32 decreases, the pressure difference in the outside air and the weight of the dripper body 2 cause the dripper body 2 to tighten tightly and become very difficult to remove. However, as shown in FIG. Since the recess 3b corresponding to the step 21d is formed in the container 3, by rotating the dripper main body 2 and the lower container 3 in opposite directions, the dripper main body 2 can be easily lifted up relative to the lower container 3. Can be separated.

As described above, according to this coffee maker 1, hot water is sent through the rising passage 26 that communicates between the closed space 32 and the raw material storage section 20 of the dripper main body 2, and
It is injected into the coffee raw material 8 from above 0, and the lip 2Q
Since the liquid tends to flow downward along the lines b, etc., it is automatically stirred without stirring with a stirring rod or the like as in the siphon type. Since the scum extracted from the powder of the coffee raw material 8 is filtered by the paper filter 5, no scum is mixed into the coffee extract.

In addition, a ball 24 as a check valve is provided at the bottom of the descending passage 23 to prevent hot water from flowing upward from the bottom of the raw material storage section 2o. The scent of coffee never leaks. Therefore, the coffee components can be extracted efficiently, so that it is possible to provide coffee with a rich aroma and taste.

Furthermore, the dripper body 2.0 except the heating plate 33.0 ring 28. Since the descending container 31M4 can be manufactured entirely by resin molding, the shape can be set freely, and unlike an electric coffee maker, there is no need for a water tank, etc., so the structure is simple and can be commercialized at low cost. be able to.

FIG. 7 shows a cross-sectional view of the coffee maker 11 of another embodiment. An ascending pipe 16 is provided as an ascending passage extending to. A holder 18 holds a metal ball 17 at the bottom of the rising pipe 16, which normally closes the rising pipe 16 and releases the blocking when hot water rises and flows. this ball 1
7 is the riser pipe 1 due to its own weight when coffee components are extracted.
6 is closed.

In each of the above embodiments, the descending container 3 is made of resin, but it is of course possible to use a heat-resistant glass or metal container in order to utilize a heating source other than the electromagnetic regulator.

[Effects of the Invention] As described above, according to the present invention, there is provided a rising passageway that sends hot water in a descending container above the raw material storage section of the dripper main body;
By having a check valve that prevents the hot water from flowing upward and a descending passage that returns the coffee extract from the lower part of the raw material storage part to the lower container, the hot water can be flowed from above the raw material storage part. Since the coffee material can be injected, the coffee material stored in the material storage section through the filter is automatically stirred, and the coffee material can be sufficiently dispersed. At this time, the aroma of the coffee component does not escape due to the check valve. Therefore, it is possible to efficiently bring out the richness, aroma, and taste of coffee components, and has the excellent effect of providing rich, fragrant, and delicious coffee.

[Brief explanation of drawings]

1 is a sectional view taken along the line ■-■ of FIG. 4 according to an embodiment of the present invention, FIG. 2 is a front view of the coffee maker, and FIG.
The figure is the same side view, Figure 4 is the same plan view, and Figure 5 is the same side view as in Figure 4.
6 is a side view showing the dripper body placed on a tray, and FIG. 7 is a view corresponding to FIG. 1 of another embodiment. 1.11... Coffee maker, 2... Dripper main body, 3... Lower container, 3a... Bottom, 5... Filter, 8... Coffee raw material, 20... Raw material storage part, 23...Descent passage, 24...Ball (check valve)
, 26.16... Ascent passage, 32... Closed space. Corny Mae I- #6i: IU;! J Figure 1: Front view of Korney Mae, 77- Figure 2: 11th view of Cornie Mae Ifu and Onna Yu 11 te 1 ゛℃ gose → large collar number,
Figure 6] [! 7 Shishimanun 4-g Kojimae L- T” side view Figure 7

Claims (2)

[Claims] (1) A dripper body that has a raw material storage section on the top that stores powdered coffee raw materials through a filter, and a heating section on the bottom that forms a sealed space when the dripper body is placed. a lower container that communicates between the closed space and the upper side of the raw material storage section, and a rising passage that sends hot water in the lower container to the upper side of the raw material storage section; 1. A coffee maker characterized by comprising: a descending passageway that communicates with the lower container and has a check valve that prevents the hot water from flowing upward, and a descending passageway that returns the coffee extract filtered through the filter into the lower container. (2) The coffee maker according to claim 1, wherein the dripper main body is made of resin.