JPH075782Y2 - Coffee extractor - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a funnel type coffee extractor for extracting coffee through a strainer net by pouring coffee powder and pouring hot water.

[0002]

2. Description of the Related Art Heretofore, there has been known a coffee extractor in which a mesh plate formed by forming a number of fine filtering holes in a thin metal plate is arranged in a substantially V-shaped cross section and assembled in a frame made of synthetic resin. (For example, German Patent No. 2153901). In such a coffee extractor, since the filter holes having the same cross-sectional area are evenly arranged over the entire surface of the mesh plate, when passing a relatively small amount of coffee, the passing speed of hot water through the mesh plate is increased. Since it is too much, coffee is not extracted to a required concentration, and there is a problem that coffee with good flavor cannot be obtained.

[0003]

Therefore, according to the present invention, when a relatively small amount of coffee is to be extracted, the passing speed of hot water through the mesh plate is appropriately slowed down so that the amount of coffee grounds is small. Also has a problem to provide a coffee extractor capable of extracting coffee with a good flavor as well.

[0004]

According to the present invention, in order to solve the above-mentioned problems, the mesh plate 6 is divided into at least two areas vertically, and the aperture ratio of the filter holes 9 in the lower area is set to the upper area. The coffee extractor 1 was configured so that the opening ratio was set smaller than 9, and the filtration rate could be selected according to the amount of coffee to be extracted.

[0005]

In the coffee extractor 1 of the present invention, when a relatively small amount of coffee is to be extracted, since the coffee powder is also small, it is concentrated and stored in the lower portion of the mesh plate 6, that is, the bottom portion. It Since the lower area of the mesh plate 6 has a relatively small opening ratio of the filter holes 9, the speed at which hot water passes through the mesh plate 6 is appropriately limited, and the coffee is extracted for a sufficient time. On the other hand, when the amount of coffee grounds is relatively large, when hot water is poured, the coffee grounds spreads over the entire mesh plate 6 and the filter holes 9 are appropriately filled.
The speed of passing through is moderately limited, and coffee is extracted for a sufficient time.

[0006]

An embodiment of the present invention will be described with reference to the drawings. 1 is an exploded perspective view of the coffee extractor, FIG. 2 is a front view of the coffee extractor, FIG. 3 is a vertical sectional front view of the coffee extractor, FIG. 4 is a vertical sectional side view of the coffee extractor, and FIG. It is an enlarged view of a hole.

In the figure, a coffee extractor 1 has a funnel-shaped dripper 2 and a ring-shaped holder 3 which is detachable from the dripper 2. Holder 3 is dripper 2
For supporting on the opening edge of the pot P.

The dripper 2 has a substantially conical frame 5 made of synthetic resin having an opening 4, and a mesh plate stretched in a substantially V shape so as to fit the opening 4 of the frame 5. 6 and. A fitting groove 7 for engaging the holder 3 is horizontally formed on the outer periphery of the lower portion of the frame body 5.

The mesh plate 6 is composed of a single thin mesh plate member having a substantially elliptical shape similar to the opening 4 of the frame body 5. The peripheral edge of the mesh plate 6 is sandwiched between the peripheral edge of the opening 4 and the peripheral edge of the opening 4 having a similar shape to the peripheral edge of the opening 4, and is welded to both. In this embodiment, the mesh plate 6 is manufactured by an electroforming method, is made of a nickel alloy having a thickness of 70 μ, and has a large number of filtering holes 9 on almost the entire surface. The filter holes 9 are long holes as shown in FIG. 5, and are vertically and horizontally arranged at equal intervals. The filter hole 9 is
All are 2 mm in length, but there are three types of width, 45μ, 50μ, and 60μ. In Fig. 3, the region A divided by the alternate long and two short dashes line is 45μ, the region B is 50μ, and the region C is 6μ.
0μ is arranged, and the B area is 85 of the C area.
%, The A area has an aperture ratio of 70% of the C area, and the aperture ratio of the lower area is gradually reduced.

The holder 3 has an engaging projection 10 on the inner circumference and a stopper projection 11 projecting from the end of the projection 10. The engagement ridge 10 can be engaged with the fitting groove 7 by fitting the dripper 2 into the holder 3 and relatively rotating the stopper projection 11 until the stopper projection 11 contacts the edge of the opening 4.

In the case of extracting coffee using the coffee extractor 1 of this embodiment, as shown in FIG. 2, the holder 3 is set on the opening of the pot P, and the coffee powder is placed in the dripper 2. Is added, hot water is poured into this, and filtration is performed with a mesh plate 6. However, when a relatively small amount of coffee is to be extracted, the coffee powder is also a small amount, so that the coffee is concentrated and stored in the lower portion of the mesh plate 6, that is, the bottom portion. Mesh plate 6
In the lower areas A and B, since the opening ratio of the filter holes 9 is relatively small, the speed at which hot water passes through the mesh plate 6 is appropriately limited, and the coffee is extracted for a sufficient time. On the other hand, when the amount of coffee powder is relatively large, pouring hot water causes the coffee powder to spread over the whole mesh plate 6 to properly fill the filter holes 9, so that the hot water also passes through the mesh plate 6. The speed of brewing is moderately limited, and the coffee is extracted for a sufficient time. After use, if the holder 3 is removed from the dripper 2, it can be easily washed and the device can be kept clean.

[0012]

As described above, in the present invention, the mesh plate 6 is vertically divided into at least two areas, and the opening ratio of the filtering holes 9 in the lower area is smaller than that of the filtering holes 9 in the upper area. Since the coffee extractor 1 is configured so that it can be set and the filtration speed can be selected according to the amount of coffee to be extracted, when a relatively small amount of coffee is to be extracted,
There is an effect that the flavor of coffee can be similarly extracted even if the amount of coffee powder is large or small by appropriately slowing the passage speed of hot water through the mesh plate.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a coffee extractor.

FIG. 2 is a front view of a coffee extractor.

FIG. 3 is a vertical front view of a coffee extractor.

FIG. 4 is a vertical side view of the coffee extractor.

FIG. 5 is an enlarged view of a filter hole of a mesh plate.

[Explanation of symbols]

 1 Coffee extractor 2 Dripper 3 Holder 4 Opening 5 Frame 6 Net plate 9 Filtration hole A, B, C area

Claims (1)

[Scope of utility model registration request] 1. A coffee extractor in which a mesh plate formed by forming a number of fine filtration holes on a thin metal plate is arranged in a substantially V-shaped cross section and assembled to a frame made of synthetic resin. Is divided into at least two areas above and below, the opening ratio of the filtering holes in the lower area is set smaller than the opening ratio of the filtering holes in the upper area, and the filtering speed can be selected according to the amount of coffee to be extracted. Coffee extractor characterized by.