Natural stirring coffee dripper

Abstract

To enable anyone to easily prepare a delicious coffee drink. [Solution] The natural stirring type coffee dripper 1 has a spherical side wall portion 2 having an opening 5 at an upper end and having a substantially circular horizontal cross-sectional shape and an arcuate side cross-sectional shape, a partition plate portion 3 defining a lower end of a substantially spherical internal space 6 within the spherical side wall portion 2, and a plurality of through holes 7, 8 formed in the partition plate portion 3, and is configured to pour a pouring liquid from the opening 5 onto coffee powder filled in a filter material 13 inserted into the internal space 6 through the opening 5, causing coffee liquid 12 to flow down through the plurality of through holes 7, 8, wherein the substantially circular horizontal cross-sectional shape and the arcuate side cross-sectional shape of the spherical side wall portion 2 induce a first convection current W1 that rises from a radial center region of the partition plate portion 3 along an inner wall of the spherical side wall portion 2 to the pouring liquid, thereby generating primary natural stirring of the coffee liquid 12.

Description

[Technical field]

[0001] The present invention relates to a natural stirring type coffee dripper. [Background technology]

[0002] 2. Description of the Related Art Conventionally, coffee drippers for extracting components of coffee beans into liquid have been known (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3150399 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-mentioned conventional coffee drippers, the side cross-sectional shape of the upper body 1 of the coffee dripper is linear. Therefore, in order to make a delicious coffee drink, it is necessary to adjust the amount of hot water poured or pour the hot water in a "no" shape, which makes it difficult to use and makes it difficult for anyone to easily make a delicious coffee drink.

[0005] To provide a natural stirring type coffee dripper that allows anyone to easily make a delicious coffee drink by naturally stirring (primary natural stirring) coffee powder in a coffee liquid to create a flavorful, mellow coffee drink. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention provides a natural stirring coffee dripper comprising a spherical side wall portion having an opening at an upper end and having a substantially circular horizontal cross-sectional shape and an arcuate side cross-sectional shape, a partition plate portion extending substantially horizontally below the spherical side wall portion and defining a lower end of a substantially spherical internal space within the spherical side wall portion, and a plurality of through holes bored in the partition plate portion in a substantially vertical direction so as to face the internal space, the natural stirring coffee dripper being configured to pour a pouring liquid from the opening onto coffee powder filled in a filtering material inserted into the internal space along an inner wall of the spherical side wall portion from the opening, causing the coffee liquid to seep out of the filtering material and flow down through the plurality of through holes, The natural stirring type coffee dripper is characterized in that the pouring liquid is poured from the opening into the radial center of the internal space, and the approximately circular horizontal cross-sectional shape and the arcuate side cross-sectional shape of the spherical side wall portion induce a first convection current inside the filter material that rises from the radial center area of ​​the partition plate portion along the inner wall of the spherical side wall portion, thereby generating primary natural stirring of the coffee liquid containing the coffee powder filled in the filter material.

[0007] In the coffee dripper of the present invention, an opening is provided at the upper end of the spherical side wall. When preparing a coffee beverage, a user inserts a filter material such as a paper filter along the inner wall of the spherical side wall, fills the filter material with coffee powder, and then pours a pouring liquid into the inner space of the spherical side wall through the opening. The pouring liquid is an appropriate heated liquid such as hot water or milk.

[0008] At this time, the spherical side wall portion has a substantially circular horizontal cross-sectional shape and an arc-shaped side cross-sectional shape, and the internal space is substantially spherical in shape. Therefore, by pouring the pouring liquid into the radial center of the internal space, convection (first convection) of the coffee liquid containing the coffee powder is induced inside the filter material, with the behavior of rising from the radial center region of the partition plate portion along the inner wall of the spherical side wall portion. As a result, natural stirring (primary natural stirring) of the coffee powder can be naturally caused in the coffee liquid, so that a flavorful and mellow coffee drink can be made. As a result, anyone can easily make a delicious coffee drink. Effect of the Invention

[0009] According to the present invention, since natural stirring (primary natural stirring) of coffee powder can be naturally induced in the coffee liquid, a rich and flavorful coffee drink can be made. As a result, anyone can easily make a delicious coffee drink. [Brief description of the drawings]

[0010] [Figure 1] FIG. 2 is a side view of a natural stirring type coffee dripper. [Diagram 2] FIG. 2 is a side cross-sectional view of a natural stirring type coffee dripper. [Diagram 3] FIG. 2 is a plan view of the natural stirring type coffee dripper viewed from above. [Figure 4] FIG. 1 is a conceptual diagram illustrating a natural stirring type coffee dripper in use. [Diagram 5] FIG. 1 is a conceptual diagram explaining the primary natural stirring of a natural stirring type coffee dripper. [Figure 6] FIG. 1 is a conceptual diagram explaining secondary natural stirring of a natural stirring type coffee dripper. [Figure 7] FIG. 13 is a plan view of a modified natural stirring type coffee dripper in which the number of first through holes is greater than the number of second through holes, as viewed from above. [Figure 8] FIG. 13 is a plan view of a modified natural stirring coffee dripper in which the first through hole is angled, as viewed from above. [Figure 9] FIG. 13 is a plan view of a modified natural stirring coffee dripper in which a plurality of first through holes have different diameters and angles, as viewed from above. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] An embodiment of the present invention will be described below with reference to the drawings. Note that the embodiment described below is for illustrative purposes only and does not limit the technical scope of the present invention. Therefore, a person skilled in the art can adopt an embodiment in which each of the components below is replaced with an equivalent, and such an embodiment is also included in the technical scope of the present invention. In addition, in the following description, in order to facilitate understanding of the present invention, the description of unimportant known technical matters will be appropriately omitted or simplified.

[0012] Fig. 1 shows a side view of natural stirring type coffee dripper 1, Fig. 2 shows a side cross-sectional view of natural stirring type coffee dripper 1, and Fig. 3 shows a plan view of natural stirring type coffee dripper 1 as viewed from above. The side cross-sectional view of Fig. 2 corresponds to the AA cross-sectional view of Fig. 3. The directions shown in Figs. 1 to 3 are the up-down direction parallel to the vertical direction, the left-right direction parallel to the horizontal direction, and the front-rear direction perpendicular to the up-down direction and the left-right direction. Similar directions are also shown in Figs. 4 to 9.

[0013] Natural stirring type coffee dripper 1 has an opening 5 at its upper end. Natural stirring type coffee dripper 1 also has a substantially circular horizontal cross-sectional shape as shown in Fig. 3, and a spherical side wall portion 2 having an arc-shaped side cross-sectional shape as shown in Fig. 2.

[0014] The natural stirring type coffee dripper 1 has a partition plate portion 3. The partition plate portion 3 is provided so as to extend substantially horizontally below the spherical side wall portion 2, and defines the lower end portion of a substantially spherical internal space 6 within the spherical side wall portion 2.

[0015] Natural stirring type coffee dripper 1 also has a ring-shaped bottom portion 4. Ring-shaped bottom portion 4 is provided below and continuous with partition plate portion 3, has smaller dimensions in the front-rear and left-right directions than partition plate portion 3, and is configured in an annular shape.

[0016] Natural stirring type coffee dripper 1 has first through hole 7 and second through hole 8 as a plurality of through holes bored in partition plate portion 3 in a substantially vertical direction so as to face internal space 6.

[0017] As shown in FIG. 3, in the natural stirring coffee dripper 1, when the partition plate portion 3 facing the internal space 6 is divided in the left-right direction into one side region 9 (the left side in this figure) and the other side region 10 (the right side in this figure), the first opening area S1 formed by the first through hole 7 existing in the one side region 9 is larger than the second opening area S2 formed by the second through hole 8 existing in the other side region 10.

[0018] In this figure, one first through hole 7 and one second through hole 8 are provided, and the hole diameter of the first through hole 7 is made larger than the hole diameter of the second through hole 8, so that the first opening area S1 is larger than the second opening area S2.

[0019] Natural stirring type coffee dripper 1 has a liquid guide groove 11. As shown in Figures 2 and 3, liquid guide groove 11 is recessed in the lower part of spherical side wall portion 2 so as to be located on a straight line extending radially outward from center C in the front-rear and left-right directions of spherical side wall portion 2 when viewed in a plan view from above, and is configured so that its lower end reaches partition plate portion 3.

[0020] In this figure, eight liquid guide grooves 11 are provided radially at 45° intervals from center C on the lower end of the inner wall of spherical side wall portion 2. In addition, as shown in Fig. 3, in a plan view of natural stirring type coffee dripper 1, of the eight liquid guide grooves 11, two liquid guide grooves 11a are disposed on an extension line P of a line connecting the centers of first through hole 7 and second through hole 8.

[0021] FIG. 4 shows a conceptual diagram illustrating the natural stirring type coffee dripper 1 in use. FIG. 4 shows a state in which coffee powder is filled into the filter material 13 that has been inserted into the internal space 6 so as to fit along the inner wall of the spherical side wall portion 2 from the opening 5, and when pouring liquid is poured from the opening 5, coffee liquid 12 obtained from the pouring liquid and the coffee powder seeps out of the filter material 13 and flows down through the first through hole 7 and the second through hole 8, and is stored in the container 14 as a coffee beverage 15.

[0022] At this time, the liquid guide groove 11 described in Figures 2 and 3 separates the filter material 13 inserted into the internal space 6 from the inner wall of the spherical side wall portion 2, while guiding the coffee liquid 12 that has seeped out of the filter material 13 downward along the arc-shaped side cross-sectional shape.

[0023] For example, a paper material such as a paper filter is used as the filter material 13. In addition, a heated liquid such as hot water or warm milk can be used as the pouring liquid.

[0024] FIG. 5 shows a conceptual diagram explaining primary natural mixing. In the natural stirring type coffee dripper 1, the poured liquid is poured from the opening 5 into the radial center of the internal space 6, and due to the approximately circular horizontal cross-sectional shape and arc-shaped side cross-sectional shape of the spherical side wall portion 2, a first convection current W1 is induced inside the filter material 13 that rises from the radial center region of the partition plate portion 3 along the inner wall of the spherical side wall portion 2, thereby generating primary natural stirring of the coffee liquid including the coffee powder filled in the filter material 13.

[0025] Depending on the amount of poured liquid, when the water level of the coffee liquid 12 (not shown) is at a relatively high water level H, a relatively large first convection current W1(H) is induced, when the water level is at a medium water level M, a medium first convection current W1(M) is induced, and when the water level is at a relatively low water level L, a relatively small first convection current W1(L) is induced in the coffee liquid 12. A plurality of first convection currents W1 are generated radially from the center of the internal space 6 in the radial direction.

[0026] FIG. 6 shows a conceptual diagram explaining secondary natural mixing. In the natural stirring type coffee dripper 1, since the first opening area S1 formed by the first through hole 7 is larger than the second opening area S2 formed by the second through hole 8, a second convection current W2 is induced from the other side area 10 to the one side area 9, and secondary natural stirring of the coffee liquid 12 (not shown) containing coffee powder filled in the filter material 13 occurs.

[0027] In this figure, below the water level M of the coffee liquid 12 descending from the other-side area 10 toward the one-side area 9, a plurality of second convection currents W2 are induced.

[0028] <Effects of the embodiment> In the natural stirring coffee dripper 1 of this embodiment, an opening 5 is provided at the upper end of the spherical side wall portion 2. When making a coffee beverage, a user inserts a filter material 13 such as a paper filter along the inner wall of the spherical side wall portion 2, fills the filter material 13 with coffee powder, and then pours the pouring liquid into the internal space 6 of the spherical side wall portion 2 through the opening 5. The pouring liquid is an appropriate heated liquid such as hot water or milk. At this time, the spherical side wall portion 2 has a substantially circular horizontal cross-sectional shape and an arc-shaped side cross-sectional shape, and the internal space 6 has a substantially spherical shape. Therefore, by pouring the pouring liquid into the radial center of the internal space 6, convection (first convection W1) of the coffee liquid 12 containing the coffee powder is induced inside the filter material 13, with the behavior of rising from the radial center region of the partition plate portion 3 along the inner wall of the spherical side wall portion 2. As a result, natural stirring (primary natural stirring) of the coffee powder can be naturally caused in the coffee liquid 12, so that a flavorful and mellow coffee beverage can be made. In this way, anyone can easily make a delicious coffee beverage.

[0029] Furthermore, in this embodiment, the coffee liquid 12 seeping out of the filter material 13 flows downward through the multiple through holes provided in the partition plate portion 3, and is stored in a cup or container appropriately provided below the partition plate portion 3. At this time, when the partition plate portion 3 is divided into one side and the other side in the horizontal direction, the opening area S1 (=first opening area; in the case of multiple through holes, the total of the opening areas) of the first through hole 7 in the one-side region 9 is larger than the opening area (=second opening area S2; in the case of multiple through holes, the total of the opening areas) of the through hole 8 (second through hole) in the other-side region.

[0030] As a result, when the level of the coffee liquid 12 containing coffee powder generated inside the filter material 13 by pouring the pouring liquid as described above gradually drops, the water level in the one-side region 9 tends to drop faster than the water level in the other-side region 10. This induces convection (second convection W2) of the coffee liquid 12 moving from the other-side region 10 to the one-side region 9, which also causes natural stirring of the coffee powder (secondary natural stirring) in the coffee liquid 12. As a result, a rich and flavorful coffee beverage can be reliably produced by the effect combined with the above-mentioned primary natural stirring.

[0031] Furthermore, in this embodiment, by making the first opening area S1 larger than the second opening area S2 due to the difference in hole diameter between the first through holes 7 and the second through holes 8, the water level in the one-side area 9 falls faster than the water level in the other-side area 10, and convection W2 of the coffee liquid 12 flowing from the other-side area 10 to the one-side area 9 can be induced. In particular, even when the number of the first through holes 7 and the number of the second through holes 8 are the same, the convection W2 can be induced reliably.

[0032] In addition, in this embodiment, when pouring liquid, if the wet filter material 13 sticks to the inner wall of the spherical side wall portion 2, the coffee liquid in the filter material 13 is difficult to seep out of the filter material 13. Therefore, in this embodiment, at least one liquid guide groove 11 is provided in the lower part of the spherical side wall portion 2, so that the filter material 13 inserted in the internal space 6 is separated from the inner wall of the spherical side wall portion 2. At this time, the liquid guide groove 11 is arranged on a straight line extending from the center C of the spherical side wall portion 2 toward the outside in the radial direction in a plan view. This allows the coffee liquid seeping out of the filter material 13 to be smoothly guided to the first through hole 7 and the second through hole 8 of the partition plate portion 3 along the arc-shaped side cross-sectional shape of the spherical side wall portion 2.

[0033] Furthermore, particularly in this embodiment, a second convection W2 is induced from the other-side region 10 to the one-side region 9 due to the difference in opening area between the first through hole 7 and the second through hole 8. As a result, the second convection W2 tends to collide with a region of the filter material 13 that corresponds to an extension line P of a line connecting the center of the first through hole 7 and the center of the second through hole 8. In this embodiment, the liquid guide groove 11a is disposed immediately adjacent to the region of the filter material 13 with which the second convection W2 collides, so that the coffee liquid 12 that has been made flavorful and mellow by the action of the second convection W2 can be reliably exuded outside the filter material 13 and guided to the first through hole 7 and the second through hole 8.

[0034] Such a natural stirring type coffee dripper 1 can easily and automatically produce a flavorful coffee beverage of a certain level of quality or higher without requiring any special ingenuity or technique in pouring the liquid, and therefore can be applied to automatic coffee machines, etc.

[0035] <Modification> The present embodiment is not limited to the above embodiment, and various modifications are possible without departing from the spirit and technical concept of the present embodiment. Such modifications will be described below in order.

[0036] (1) When the number of first through holes is greater than the number of second through holes FIG. 7 shows a plan view of the natural stirring type coffee dripper 1a of this modified example as viewed from above. The natural stirring type coffee dripper 1a has two first through holes 7a and 7b, and one second through hole 8. The diameters of the first through hole 7a, the first through hole 7b, and the second through hole 8 are substantially equal. The centers of the first through hole 7a, the first through hole 7b, the second through hole 8, and the center C of the spherical side wall portion 2 in the front-rear and left-right directions are aligned on a straight line. A liquid guide groove 11a is arranged on an extension line P of the straight line.

[0037] <Effects of modified versions> In this modified example, the first opening area S1, which is the sum of the opening areas of the first through hole 7a and the first through hole 7b present in the one-side region 9, is larger than the second opening area S2 of the second through hole 8 present in the other-side region 10, and therefore a second convection W2 is induced.

[0038] Furthermore, in this modified example, due to the difference in number between the first through holes 7a and 7b and the second through holes 8, the water level in the one-side region 9 is made to fall faster than the water level in the other-side region 10, and convection of the coffee liquid 12 moving from the other-side region 10 to the one-side region 9 can be induced. In particular, even when the hole diameter of the first through holes 7a and 7b and the hole diameter of the second through hole 8 are the same, the above-mentioned convection can be reliably induced. In addition, the present invention has the same effects as the embodiment.

[0039] (2) When the first through hole has an angle FIG. 8 shows a plan view of the natural stirring type coffee dripper 1b of this modification from above. In the natural stirring type coffee dripper 1b as well, the first through hole 7a', the first through hole 7b', and the second through hole 8 have substantially the same hole diameter. In this modification, the first through hole 7a' is disposed so that a line connecting the center of the first through hole 7a' to the center C and a line connecting the center of the first through hole 7b' to the center C form a predetermined angle (for example, substantially 90°). The predetermined angle is not particularly limited, but is set to an angle at which both the first through hole 7a' and the first through hole 7b' are disposed in the one-side region 9. In addition, the liquid guide groove 11a is disposed on an extension line of a line connecting the center of each of the first through hole 7a' and the first through hole 7b' to the center of the second through hole 8 via the center C.

[0040] <Effects of modified versions> Also in this modification, the first opening area S1, which is the sum of the opening areas of the first through holes 7a' and the first through holes 7b', is larger than the second opening area S2 of the second through holes 8 present in the other-side region 10, so that the second convection W2 is induced. In addition, the modification has the same effects as those of the embodiment and the modification described in FIG. (3) When multiple first through holes have different diameters and angles FIG. 9 shows a plan view of natural stirring type coffee dripper 1c of this modified example as viewed from above. In natural stirring type coffee dripper 1c, first through hole 7a″, first through hole 7b″, and second through hole 8 have different diameters, with the size relationship being first through hole 7a″ > diameter of second through hole 8 > diameter of first through hole 7b″. In addition, liquid guide groove 11a is disposed on an extension of a line connecting the center of first through hole 7a″ and first through hole 7b″ with the center of second through hole 8 via center C.

[0041] <Effects of modified versions> Also in this modified example, the first opening area S1, which is the sum of the opening areas of the first through holes 7a" and the first through holes 7b" present in the one-side region 9, is larger than the second opening area S2 of the second through holes 8 present in the other-side region 10, so that the second convection W2 is induced. In addition, the modified example has the same effects as those of the embodiment and the modified example described in FIG. 7.

[0042] In the above description, when the external dimensions or sizes are described as "same", "equal", "different", etc., the description does not mean the strict meaning. In other words, "same", "equal", and "different" mean "substantially the same", "substantially equal", and "substantially different", allowing for design and manufacturing tolerances and errors.

[0043] In addition to the above, the methods according to the above embodiments and their modifications may be used in appropriate combination.

[0044] Although not specifically illustrated, the present invention can be implemented with various modifications without departing from the spirit and scope of the present invention. [Explanation of symbols]

[0045] 1. Natural stirring coffee dripper 2 Spherical side wall 3 Partition plate 4 Ring-shaped bottom 5 Opening 6. Interior Space 7 First through hole 8 Second through hole 9 One-sided area 10 Other side area 11, 11a Liquid groove 12 Coffee liquid 13 Filter material 14 Container 15 Coffee drinks

Claims

1. A spherical side wall portion having an opening at an upper end and having a substantially circular horizontal cross-sectional shape and an arcuate side cross-sectional shape; a partition plate portion extending substantially horizontally below the spherical side wall portion and defining a lower end portion of a substantially spherical internal space within the spherical side wall portion; a plurality of through holes formed in the partition plate portion in a substantially vertical direction so as to face the internal space; having A natural stirring type coffee dripper for pouring a liquid from the opening onto coffee powder filled in a filter material inserted into the internal space along an inner wall of the spherical side wall portion from the opening, thereby causing the coffee liquid to seep out of the filter material and flow down through the multiple through holes, The substantially circular horizontal cross-sectional shape and the arcuate side cross-sectional shape of the spherical side wall portion induce a first convection current inside the filter material that rises from the radial center region of the partition plate portion along the inner wall of the spherical side wall portion with respect to the poured liquid poured from the opening portion to the radial center portion of the internal space, thereby generating primary natural stirring of the coffee liquid containing the coffee powder filled in the filter material. A naturally stirred coffee dripper.

2. In the natural stirring type coffee dripper according to claim 1, When the partition plate portion facing the internal space is divided into one side region and the other side region in the horizontal direction, a first opening area formed by at least one first through hole present in the one side region is made larger than a second opening area formed by at least one second through hole present in the other side region, and a second convection current directed from the other side region to the one side region is induced, thereby generating secondary natural stirring of the coffee liquid containing the coffee powder filled in the filter material. A naturally stirred coffee dripper.

3. In the natural stirring type coffee dripper according to claim 2, The diameter of the first through hole is made larger than the diameter of the second through hole, so that the first opening area is made larger than the second opening area. A naturally stirred coffee dripper.

4. In the natural stirring type coffee dripper according to claim 2 or 3, The number of the first through holes is made larger than the number of the second through holes, so that the first opening area is made larger than the second opening area. A naturally stirred coffee dripper.

5. In the natural stirring type coffee dripper according to claim 2, at least one liquid guide groove is recessed in a lower portion of the spherical side wall portion so as to be on a straight line extending radially outward from the center of the spherical side wall portion in a plan view, the lower end of the liquid guide groove reaching the partition plate portion; The liquid guide groove is The filtering material inserted in the internal space is spaced from the inner wall of the spherical side wall portion, and the coffee liquid that has seeped out of the filtering material is guided downward along the arc-shaped side cross-sectional shape. A naturally stirred coffee dripper.

6. 6. The natural stirring type coffee dripper according to claim 5, In plan view, The liquid guide groove is disposed on an extension of a line connecting the center of the first through hole and the center of the second through hole. A naturally stirred coffee dripper.

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