JPS6216641B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a filter in a coffee brewer or the like.

Traditionally, this type of drip coffee brewer has
Coffee is extracted by pouring hot water heated by a heater into coffee grounds stored in a coffee basket, and the concentration of the extracted coffee liquid depends on the amount of hot water relative to the amount of coffee grounds. For this reason, those who prefer weaker coffee reduce the amount of coffee powder compared to the amount of hot water to extract coffee, but the amount of hot water compared to the amount of coffee powder becomes too large, and the amount of coffee powder exceeds the amount necessary for making coffee extract. Excessive extraction, sourness,
The coffee liquid had a strong astringent or bitter taste, or the coffee liquid was watery, and they had to put up with drinking either the bad-tasting coffee liquid or the strong coffee liquid that did not suit their tastes.

Originally, the degree of roasting of coffee beans determines the concentration of coffee liquid extracted from coffee powder. Therefore, the amount of hot water relative to the amount of coffee powder is kept almost constant without adjustment. However, if you prepare many types of coffee powder with different roasts, you will have to store it for a long time, which will oxidize and result in an unpleasant coffee liquid.Also, it is almost impossible to purchase coffee powder each time, It was not always possible to drink coffee with the strength that suited my taste.

The present invention solves the above-mentioned conventional drawbacks and provides a filter for coffee, etc., which has a simple structure and allows the concentration of coffee extract to be adjusted according to each person's preference.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In the figure, 1 is a water tank, which has a lid 2 at its upper opening and a check valve 3 at its bottom. 4 is a heating pipe, one end of which is connected to the check valve 3;
The other end is connected to a discharge pipe 6 via a water raising pipe 5. This discharge pipe 6 has upward and downward openings 6.
a, 6b, a concave sprinkler lid corresponding to the upper opening 6a, and a coffee basket 8 placed on a coffee container 28 below the lower opening 6b. . The substantially inverted conical coffee basket 8 has a plurality of ribs 9 formed on the bottom of its inner surface, and a guide rib 10 in which some of the ribs 9 extend upward from the inner surface and their upper ends protrude toward the center. A coffee outlet 11 provided at the bottom and a support frame 12 formed around the outer periphery of the lower end.
, a handle 13 formed on a part of the outer periphery of the upper end, and a circumferential display section 14, which are integrally formed of synthetic resin or the like.

On the display section 14, density indications such as "regular" on the right end and "mild" on the left end are displayed by printing or the like. Coffee powder 16 is stored in this coffee basket 8 via a paper filter 15.
17 is superimposed on the lower lid 23 to form the coffee basket 8
A round hole 18a is provided at the center with an annular rib 18 having a substantially inverted V-shaped cross section on its outer periphery, and an inclined portion 19 directed toward the center is provided on the outer periphery of the annular rib. 18 and the inclined portion 19 are provided with a plurality of arc-shaped holes 20a separated by chevron-shaped ribs 20, and a plurality of locking valves 21 are provided near the outer periphery, and a portion of the hole 20a is provided from the outer periphery. The protruding operation pieces 22 are each integrally molded from synthetic resin or the like. Note that 17a is a notch. Lower lid 2
3 has a round hole 23a in its center that engages with the annular rib 18 of the upper lid 17, and a fan-shaped rib 33 that slopes outward in opposition to the arc-shaped hole 20a on its outer periphery. An arc-shaped hole 23b, which is slightly larger than the arc-shaped hole 20a, and a circumferential groove 24 extending in two directions to the outer periphery are provided on the outer periphery of the hole 23b.
A notch hole 24a is provided at its outer peripheral end. Further, the outer periphery is provided with a plurality of locking parts 25 that engage with locking pieces of the upper lid 17, and a handle 27 that partially projects outward and has ribs 26 on the back side of both ends. It is integrally formed. A heating body 30 that heats the coffee container 28 via a heat insulating plate 29 is provided below the coffee container 28 and has a heating pipe 4 and a sheathed heater 31 installed therein. Note that 32 is a handle of the coffee receiving container 28.

In the above configuration, coffee powder 16 corresponding to the desired number of cups and coffee extraction concentration is placed in the paper filter 15 and placed in the coffee basket 8. At this time, as shown in FIG.
Ensure that there is a gap. Next, the notch 1 of the upper lid 17
Align the handle 27 of the lower lid 23 with 7a and attach the lower lid 23 to the annular rib 18 and the locking piece 21 of the upper lid 17.
The round hole 23a and the locking part 25 are rotatably engaged, and the coffee basket is placed on the coffee basket 8 and the handle 2 of the lower lid is attached to the handle 13 of the coffee basket 8.
7 and position it in the rotational direction using the rib 2b. At this time, the notch hole 24a of the lower lid 23 is aligned with the upper part of the guide rib 10.

Next, the operating piece 22 is rotated in the circumferential direction of the coffee basket 8 to set the desired coffee extraction concentration.

The rotation range of the top lid 17 is regulated by a handle 27 that is loosely fitted into the notch 17a, and when the handle 27 comes into contact with the left end of the notch 17a, the operation piece 22 moves to the " At this time, the relationship between the upper lid 17 and the lower lid 23 is such that the fan-shaped rib 33 of the lower lid 23 is hidden by the mountain-shaped rib 20 of the upper lid 17, and the arc-shaped hole 20a of the upper lid 17 is fully opened. Furthermore, when the handle 27 is at the right end of the notch 17a, the operation piece 22 indicates "mild" on the display section 14, and the arcuate hole 20a of the upper lid 17 is almost half closed by the fan-shaped rib 33 of the lower lid 23, It will be half open.
In other words, the setting of the coffee extraction concentration mentioned above is
This is to determine the degree of opening of the arcuate hole 20a of No. 7, and it is adjustable from fully open to approximately half way.

Next, the coffee basket 8 is placed on the coffee receiving container 28, placed on the heat insulating plate 29, and the water tank 1 is filled with water corresponding to the desired number of cups, completing the preparation. When a power switch (not shown) is turned on, water flowing from the water tank 1 through the check piece 3 into the heating pipe 4 is heated by the sheathed heater 31 via the heating body 30. The check piece 3 allows the water in the water tank 1 to pass through the heating pipe 4, but does not allow it to pass in the opposite direction, and the water is heated one after another, expands and boils repeatedly, and jets out one after another from the openings 6a and 6b of the discharge pipe 6. do.

When the operation piece 22 is set to "mild" when setting the coffee extraction concentration, that is, when the arcuate hole 20a is half-opened as shown in FIG.
The hot water spouted from the cup drips into the coffee grounds 16 in the coffee basket 8 through the round holes 18a and 23a. The hot water spouted from the opening 6a spreads along the inner surface of the sprinkling lid 7 and hits the annular rib 18 of the top lid 17 and the inclined portion 1.
9, an arcuate hole 20a is formed near the intersection of
Hot water drips directly onto the coffee grounds 16 in the coffee basket 8 from the opening, but the hot water poured onto the fan-shaped ribs 33 of the lower lid 23 is guided outward along the slope and collected in the groove 24. In addition, the hot water spouted out along the inner surface of the sprinkler lid 7 and poured into the mountain-like ribs 20 is divided into left and right sides, and is passed through arc-shaped holes 20 along the sloped surface.
a and the fan-shaped rib 23. The hot water collected in the groove 24 flows from the notch hole 24a to the inner surface of the coffee basket 8 near the guide rib 10 and to the paper filter 1.
5 and flows out from the coffee outlet 11 into the coffee receiving container 28. The hot water dripped onto the coffee powder 16 extracts coffee components, is filtered by a paper filter 15, and flows out from the coffee outlet 11 into the coffee receiving container 28, so that coffee of a desired concentration is extracted.

When the operating piece 22 is set to the "regular" position, the arcuate hole 20a is fully opened, and the coffee powder 16 is passed through the opening 6b through 18a and 23a.
From the opening 6a, it spreads along the inner surface of the sprinkling lid 7, and from the arc-shaped hole 20a, all the coffee powder 16 is released.
Coffee is extracted in the same way as before.

Furthermore, when the upper lid 17 is rotated, the end face of the fan-shaped rib 33, which is the opening edge of the arc-shaped hole 23b of the lower lid 23 that closes the arc-shaped hole 20a of the upper lid 17, is aligned with the opening edge of the arc-shaped hole 20a of the upper lid 17. On the other hand, it is tilted toward the outer circumference to give it a slight angle. That is, at the initial stage when the fan-shaped rib 33 enters the arcuate hole 20a, the surface is approximately triangular as shown in FIG. Therefore, the amount of hot water flowing between the paper filter 15 and the coffee basket 8 is changed approximately in proportion to the rotation angle from "regular" to "mild".

Specifically, for "mild", approximately 30% of the total amount of hot water is used.
~25% flows between paper filter 15 and coffee basket 8, and of course 0% in "Regular"
The difference between "mild" and "regular" is approximately
Stepless adjustment is possible from 30-25% to 0% in almost proportion to the rotation angle.

Generally, the amount of coffee powder is about 30 to 35 g for 4 cups of hot water, which is about 600 c.c., and the concentration of the extracted coffee is about 1.4 to 1.8%.

In this example, the amount of hot water for "mild" is about 30 to 25
% flows outside the paper filter 15, so the amount of hot water is approx.
For 600 c.c., approximately 22 to 26 g of coffee powder is used for extraction, and the concentration of the coffee is approximately 1.0 to 1.3. In other words, the coffee extraction concentration can be adjusted from about 1.0 to 1.3 to about 1.4 to 1.8.

As described above, according to the present invention, the opening edge of the arc-shaped hole in the lower lid that closes the arc-shaped hole in the upper lid when the upper lid is rotated is aligned in the outer circumferential direction with respect to the opening edge of the arc-shaped hole in the upper lid. Since it is provided at an angle, hot water flowing into the arcuate hole can be closed off by the slanted opening edge of the arcuate hole in the lower cover and can be passed through the groove on the outer periphery to the notch hole, and as a result, The amount of hot water passing through the round hole and arc-shaped hole of the lower cover and the amount of hot water passing through the notch hole can be adjusted in proportion to the rotation range of the lower cover,
Furthermore, by making the amount of hot water dripped onto the coffee grounds constant relative to the amount of coffee grounds stored in the coffee basket, it is possible to obtain a delicious coffee solution steplessly, whether it is a weak coffee solution or a conventional strong coffee solution. be.

It is also possible to make a stronger coffee liquid than before by increasing the amount of coffee powder relative to the amount of hot water.
It has become possible to extract coffee liquid that suits almost everyone's tastes, and it is also possible to extract coffee liquid for one cup as well as for several cups.

Furthermore, during coffee extraction, many effective components are extracted from the coffee extract in the initial stage, but according to the present invention, the operation is as simple as moving the control piece slightly to the left or right, and the settings can be easily made at the time of preparation. Needless to say, it is easy to operate during coffee extraction, and by opening the arcuate hole fully at the beginning of coffee extraction and changing the opening as coffee extraction progresses, you can obtain even more delicious coffee liquid. .

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of a coffee boiler showing an embodiment of the present invention, Fig. 2 is a sectional view of a filter of the same coffee boiler, Fig. 3 is an exploded perspective view of the same, and Fig. 4 is a longitudinal sectional view of a coffee boiler showing an embodiment of the present invention. FIG. 5 is a perspective view of the lid of the filter when the coffee liquid concentration is set to "mild"; FIG. 5 is a perspective view of the lid of the filter when the coffee liquid concentration is set to "regular". 8...Coffee basket, 17...Top lid, 2
0... Chevron-shaped rib, 20a... Arc-shaped hole, 23
... Lower lid, 23b ... Arc-shaped hole, 33 ... Fan-shaped rib.

Claims (1)

[Claims] 1. A top cover with a round hole formed in the center and a plurality of arc-shaped holes on the outer periphery, and a top cover with round holes and arc-shaped holes in the center corresponding to the round holes and arc-shaped holes of the top cover. The lid body is formed by rotatably superimposing a lower lid in which a hole is formed, a groove is extended outwardly on the outer periphery of the arcuate hole, and a cutout hole is provided at the outer periphery end of the lower lid. Place the body on the filter body, and align the opening edge of the arc-shaped hole in the lower lid that closes the arc-shaped hole in the upper lid when the upper lid is rotated with the outer periphery of the opening edge of the arc-shaped hole in the upper lid. The amount of hot water that passes through the circular hole and the arc-shaped hole in the center of the lower cover, and the amount of hot water that passes through the groove on the outer periphery of the arc-shaped hole and the notch hole is determined by the rotation of the lower cover. A coffee filter that can be adjusted proportionally to the range.