Coffee extractor

Abstract

To provide a coffee extractor that omits troublesome works such as cooling boiled water or brewing, prevents fine powder from being contaminated, and can readily extract high quality coffee.SOLUTION: A coffee extractor includes: a cylindrical body 20; and a filter for blocking the cylindrical body in a fitting position on a lower side of the cylindrical body and on a slightly upper side from a tip, and is configured to be capable of extracting coffee. The cylindrical body 20 is configured to be capable of attaching and detaching the filter 3 in the fitting position and retain water poured into the cylindrical body 20 while the tip abuts on an inner surface of a lower part of a container 6 that receives extracted coffee.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a coffee extractor for extracting coffee.

Background Art

[0002] As a coffee extractor for extracting coffee, there is a drip-type coffee extractor (the coffee extractor disclosed in Patent Document 1 below) in which powdered coffee beans (hereinafter referred to as powder) are put into a bag-shaped filter made of paper or cloth and hot water is poured for extraction, and a coffee extractor called a siphon type (a siphon coffee maker disclosed in Patent Document 2 below). Also known is a tea strainer (a single-person tea strainer disclosed in Patent Document 3 below) that is not for coffee extraction but can also be diverted for coffee extraction.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the above-mentioned conventional appliances have the following problems. Specifically, in the drip-type coffee extractor, since a fine filter is used, it is difficult to control the time including the steaming time and the filtering time. Also, in the siphon-type coffee extractor, since air pressure is used for forced filtration, time control is possible, but the mixing of fine powder passing through the mesh cannot be avoided.

[0005] In the drip method, powder is placed in a bag made of paper or cloth, and hot water is poured over it from above for extraction. This is called steaming. Generally, a small amount of water is poured over the powder to allow the moisture to penetrate, and then a predetermined amount of water is poured for extraction after a certain period of time. At this time, if boiling water is used for extraction, it will affect the taste and aroma, so a method of using slightly cooled water for extraction is adopted. Therefore, it is troublesome to cool the boiling water to an appropriate temperature and measure the steaming time.

[0006] Furthermore, since it is filtered through cloth or paper, it is inevitable that fine powder that has passed through the pores of the cloth or paper will be mixed in, and it is also difficult to control the time. In addition, if the extraction takes too much time, the taste will change, and the water for steaming will be absorbed by the powder, resulting in a shortage of water in a cup.

[0007] On the other hand, the above-mentioned coffee filter is a net with a fixed filter, which is too coarse for ordinary powdered coffee and cannot be replaced. By making the pores of the filter finer, it can be used for coffee extraction, but there are drawbacks that the coffee powder easily adheres to the fixed filter, the water does not pass through well, and the operation takes time. In addition, there is no lid, and it is impossible to retain hot water outside the average water level of the cylinder and the container.

[0008] The present invention has been made in view of such various problems, and provides a coffee extractor that can easily extract high-quality coffee by omitting troublesome operations such as cooling and steaming boiling water and preventing the mixing of fine powder.

Means for Solving the Problems

[0009] In order to solve the above problems, the coffee extractor according to the present invention includes a cylindrical body and a filter that closes the cylindrical body at a mounting position on the lower side of the cylindrical body and slightly closer to the base end than the tip end, and is configured to be able to extract coffee. The cylindrical body is configured such that the filter can be attached and detached at the mounting position, and is configured such that water poured into the cylindrical body stays in the cylindrical body with the tip end in contact with the inner surface of the lower part of the container that receives the extracted coffee.

[0010] Further, the coffee extractor according to the present invention is configured such that the cylindrical body can be mounted with the filter in a sagging state.

[0011] Further, the coffee extractor according to the present invention has the filter formed of cloth.

[0012] Further, the coffee extractor according to the present invention is configured such that when the tip end is facing upward and the base end is placed on a flat surface, the base end and the flat surface are not in close contact and ventilation is possible.

Advantages of the Invention

[0013] According to the coffee extractor of the present invention, since the filter can be attached and detached, and the cylindrical body is configured such that water poured into the cylindrical body can stay in the cylindrical body with the tip end in contact with the inner surface of the lower part of the container, coffee beans ground on the filter attached to the cylindrical body are put in, water is allowed to flow into the cylindrical body to wash away the fine powder adhering to the coffee beans, and then the coffee extractor is placed in the container, hot water is poured into the cylindrical body, the coffee beans and the hot water are mixed, and after a certain period of time has passed, the coffee extractor is lifted. In this simple process, it is possible to easily extract high-quality coffee while preventing the mixing of fine powder.

Brief Description of the Drawings

[0014]

Figure 1

Figure 2

Embodiments for Carrying Out the Invention

[0015] Hereinafter, embodiments of the present invention will be described with reference to the drawings. The coffee extractor 100 shown in FIG. 1 is an example of the coffee extractor of the present invention, and as shown in the figure, it is configured to include a cylindrical body 20 and a filter 3.

[0016] The cylindrical body 20 is configured to include an upper cylinder 1, an upper connection part 2, a lower connection part 4, and a lower cylinder 5, and the upper cylinder 1 and the lower cylinder 5 can be connected (divided) at the lower side (a position slightly closer to the base end than the tip end) of the entire cylindrical body 20 via the upper connection part 2 and the lower connection part 4.

[0017] In this coffee extractor 100, as shown in FIG. 2, powder is put into the upper cylinder 1 and cold water 9 is poured. At this time, the amount of water passing through the filter 3 is small, and most of the mixture of water and powder may be stored in the upper cylinder 1. Therefore, in order to avoid the risk of overflow, it is preferable to make the upper cylinder 1 have a sufficient height. Also, sometimes more than two servings of powder may be put in, and it is preferable to set the height according to the purpose.

[0018] The filter 3 is mounted so as to close the cylindrical body 20 by being sandwiched between the upper connection part 2 and the lower connection part 4 at the joining and connecting position (mounting position) of the cylindrical body 20 as shown in FIGS. 1(a) and 1(b). By making the cylindrical body 20 into the upper cylinder 1 provided with the upper connection part 2 and the lower cylinder 5 provided with the lower connection part 4, it becomes possible to easily replace the filter 3 in case of damage and to change the type of the filter 3 according to preference.

[0019] As shown in FIGS. 1 and 2, the filter 3 is a cloth that sags in the mounted state, and it is preferable that the lower cylinder 5 has a height such that the bottom of the curved filter 3 does not go below the lowermost part of the lower cylinder 5.

[0020] In the case of a non-sagging filter or a solid filter (such as a wire mesh), if the mesh is too fine, the passage of the poured water becomes extremely poor. This is presumably because the area is small and the coffee powder 12 adheres to the filter and blocks the mesh.

[0021] As shown in FIG. 2, when cold water 9 is poured into the sagging filter 3, the force of the water stirs the powder 12 and has the effect of shaking the filter 3. Therefore, the fine powder contained in the coffee powder 12 does not easily adhere to the filter 3, and the cold water 14 containing the fine powder easily flows out through the mesh of the filter 3.

[0022] Furthermore, since the entire cylinder 20 storing the cold water 9 can be shaken up, down, left, and right, the filter 3 also moves in accordance with the movement of the cylinder 20, preventing the adhesion of the coffee powder 12 and making it easier for the cold water 14 containing the fine powder to pass through.

[0023] The coffee is extracted with boiling water 10.

[0024] The container 6 shown in FIG. 1(a) is an example of a container for receiving the extracted coffee. It is preferable that the diameter D1 of the lower cylinder 5 and the inner diameter D2 of the bottom of the container 6 are substantially the same. When the lower cylinder 5 of the cylinder 20 is placed in such a container 6, the lowermost part (tip) of the lower cylinder 5 is blocked. Therefore, when the coffee powder 12 is placed in the cylinder 20 and an appropriate amount of hot water 10 is poured, a mixture 13 of the coffee powder 12 and the hot water 10 is stored in the cylinder 20. Then, the components of the coffee are extracted using a stirring rod 11 or the like.

[0025] When the cylinder 20 is lifted from the container 6 at a preferred time, the extracted coffee is quickly filtered and remains in the container 6.

[0026] A coffee extraction method using this coffee extractor 100 will be described in more detail. As shown in Fig. 2(a), coffee powder 12 is put into the upper cylinder 1 of the cylinder body 20, and cold water 9 is poured in sufficiently in several portions. At this time, the fine powder of the coffee powder 12 passing through the mesh of the filter 3 flows out (water sieving).

[0027] For example, assuming that the fine powder in 10 g of coffee beans in the coffee powder 12 is 2 g and 0.2 g (10%) remains after one water sieving (90% flows out). Then, 0.2 g × 0.1 = 0.2 g remains for the second time, and 0.02 g × 0.1 = 0.002 g remains for the third time. Therefore, almost 100% of the fine powder can be made to flow out by three water sievings. At this time, the more the amount of the coffee powder 12 is, the more time it takes for the cold water 9 to pass through the filter 3 while taking in the fine powder. Therefore, operations such as shaking the cylinder body 20 are also necessary. However, since the filter 3 is a cloth with slack, it is linked to the movement of the cylinder body 20, and in order to prevent the coffee powder 12 from sticking, most of the fine powder that can pass through the mesh of the filter 3 can be made to flow out in a short time.

[0028] Since the above is the treatment with cold water 9, it does not affect the texture so much.

[0029] However, although it depends on the type of the filter 3, overall, although it is a small amount, due to the loss of the fine powder and the outflow of a small amount of the taste and aroma components because it is immersed in the cold water 9, it is preferable to use a slightly larger amount of powder in anticipation of them.

[0030] The state of being immersed in the cold water 9 corresponds to the drip type (steaming).

[0031] Next, the cylinder body 20 containing the coffee powder 12 containing moisture is put into the container 6, hot water 10 is poured into the cylinder body 20, and the coffee components are extracted. At this time, even if 100°C hot water is poured, since the coffee powder 12 contains cold water 9, the extraction is carried out at an appropriate temperature below 100°C.

[0032] When the cylindrical body 20 is placed in the container 6, the lowermost part of the cylindrical body 20 is blocked. When hot water 10 is poured here, since it stays in the cylindrical body 20 in a state of being mixed with the coffee powder 12, it can be stirred with the stirring rod 11 to extract the components of the coffee powder 12.

[0033] Next, when the cylindrical body 20 is lifted at a preferred time, quickly filtered and highly transparent coffee is produced.

[0034] As actual measurement values, when 13 g of coffee powder 12 for one serving of coffee is put into a cylinder and cold water 9 is poured, the actual measurement value including water becomes 23 g, the moisture content is 10 g, and the water temperature is 22°C. When extracted with 170 g of hot water 10 (96°C), the resulting product is at 81°C. Considering the amount of heat taken away by the cylindrical body 20 and the container 6, it can be said that the extraction is at an appropriate temperature.

[0035] Therefore, by sieving the fine powder in the coffee powder 12 with water, using boiling hot water 10, and controlling the extraction time, delicious coffee with high transparency can be produced.

[0036] The extraction object of the coffee extractor 100 of the present invention is not limited to coffee, and it can also be used for various extraction objects such as green tea, black tea, and oolong tea, and can provide a highly transparent drink.

[0037] Note that the above coffee extractor 100 is an embodiment of the present invention and can be appropriately changed. For example, in the above coffee extractor 100, the filter 3 that sags in the mounted state is adopted, but a filter that does not sag in the mounted state can also be adopted.

Explanation of Signs

[0038] 1 Upper cylinder 2 Upper connection part 3 Filter 4 Lower connection part 5 Lower cylinder 6 Container 7 Lower cylinder diameter 8 Bottom diameter of the vessel 9 Cold water 10 Hot water 11 Stirring rod 12 Coffee powder 13 Mixture 14 Effluent water 20 Cylinder 100 Coffee extractor

Claims

1. A coffee extractor comprising a cylinder and a filter that closes the cylinder at a mounting position on the lower side of the cylinder and slightly closer to the base end than the tip end, and configured to be able to extract coffee. The cylinder is configured to be detachable from the filter at the mounting position, and is configured such that water poured into the cylinder stays inside the cylinder when the tip end is in contact with the inner surface of the lower part of the container that receives the extracted coffee.

2. The coffee extractor according to claim 1, wherein the cylinder is configured to be able to mount the filter in a slack state.

3. The coffee extractor according to claim 1, wherein the filter is formed of cloth.

4. The coffee extractor according to claim 1, wherein the cylinder is configured such that when the tip end is upward and the base end is placed on a plane, the base end and the plane are not in close contact and ventilation is possible.

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