JPH0351013A - Water extrusion type coffee extractor - Google Patents

Abstract

PURPOSE:To uniformalize grains of coffee powders supplied to a filter to provide a coffee liquid of stabilized aroma and taste by covering the filter with a conical mesh member. CONSTITUTION:A filter 3 is covered with a conical mesh member 7. Since a load of coffee powders deposited on the mesh member 7 is not vertically applied to the mesh member 7, but dispersed, clogging of the mesh member itself is eliminated. Also, since only the coffee powders having uniform grains do not pass through, clogging of the filter 3 is prevented by the mesh member 7. Namely, the coffee powders passing through the mesh member 7 to reach the filter 3 are of uniform grains. The coffee powders passing through and filtered by the filter 3 penetrate uniformly over the whole region, so that the coffee liquid is extracted through the filter 3 without a time difference of extraction and always uniformly. Thus, the coffee liquid having a stabilized aroma and delicious taste is provided.

Description

[Detailed description of the invention] (a) Industrial application field The present invention provides a method in which a filter made of a ceramic material or a fiber material is disposed at the inner bottom of a funnel, and coffee powder and water are introduced into the funnel. This invention relates to a cold brew type coffee extractor for extracting coffee.

(B) Conventional technology The conventional cold brew coffee extractor was developed in 1983-798.
As disclosed in Publication No. 21, a filter made of fibrous resin was disposed at the inner bottom of the funnel.

However, such a configuration has the drawback that depending on the coarseness of the coffee powder, the filter may become clogged, resulting in variations in coffee extraction time or inability to extract coffee.

(c) Problems to be Solved by the Invention An object of the present invention is to provide a cold-brew coffee extractor that can prevent the filter from clogging with coffee powder.

(d) Means for Solving the Problems The present invention is a funnel in which coffee is extracted by putting coffee powder and water into a funnel having a filter made of a ceramic material or miscellaneous material at the inner bottom. The filter has a configuration in which the filter is covered with a conical mesh member.

(E) Function: Coffee powder is stirred with a rod, etc. and then deposited on the inner bottom surface of the funnel from the lower periphery of the mesh member, and the mesh member itself is not clogged, resulting in less coffee powder particles passing through the filter. This makes the filter uniform, eliminating clogging of the filter, and making the transit time the same over the entire surface of the filter.

(f) Example In Fig. 1, (1) has an open top and a guide tube (
2) is an integrally formed funnel. (3) is a circular filter made of ceramics, and has a hook piece (4) on the bottom surface. (5) is a ring-shaped packing. (6) is a hook spring that is hooked at one end to the hook piece (4) and at the other end to the opening edge of the guide tube (2), and is used to connect the filter (3) to the funnel (through the gasket (5)). Opening (1) on the inner bottom surface of (1)
a) is pressed in a liquid-tight manner.

Reference numeral (7) denotes a mesh member that is engaged with and detached from the outer peripheral edge of the filter (3), and has a conical cross section.

This mesh member (7) is made of stainless steel gold mesh plate 23, and has a mesh size of 100 μm.
~200pm so that it is difficult for coffee powder to pass through.

With this configuration, the load of the coffee powder deposited on the mesh member (7) is distributed without being applied perpendicularly to the mesh member (7), so that the mesh member itself is not clogged and particles are prevented from clogging. Since only the homogeneous coffee powder does not pass through, clogging of the filter (3) is also prevented by the mesh member (7). That is, the mesh member (7
) The coffee powder that passes through the filter (3) becomes uniform particles, and the coffee powder that passes through the filter (3) permeates uniformly over the entire area, ensuring that there is no variation in extraction time. The coffee liquid is constantly extracted through the filter (3).

Figure 2 shows another embodiment in which the filter (3) is made of vertical fiber material and is housed in a cylindrical holder (10) and placed in the opening (1a) of the funnel (1). It is set up. (11) is an adjustment member for adjusting the extraction time. The mesh member (7) is the upper flange body (10a) of the holder (10).
The outer periphery of the

(G) Effects of the Invention Since the present invention is constructed as described above, clogging of the mesh member is eliminated, thereby making the particles of coffee powder supplied to the filter uniform and increasing the transient speed in the filter. is the same over the entire area, the extraction time is stable, and a coffee liquid with good aroma and taste can be obtained.

[Brief explanation of drawings]

Fig. 1 is a sectional view of the cold brew coffee extractor of the present invention;
The figure is the same sectional view showing another embodiment. (3)...filter, (1)...funnel, (7)
...Mesh parts.

Claims (1)

[Claims] (1) In a funnel that has a filter made of ceramic or fibrous material in its inner bottom, coffee powder and water are poured into the funnel to extract coffee, and the filter is covered with a conical mesh member. A cold brew coffee brewer featuring