JPH06343557A - Coffee extractor - Google Patents

Abstract

PURPOSE:To provide the coffee extractor simple in handling by washing powder of coffee stuck onto a cover, etc., at the time of grinding coffee beans with hot water. CONSTITUTION:This coffee extractor is constituted so that a hopper 6 and a grinding chamber 7 provided with a cutter 9 are arranged between a discharge tube 16 and an extraction chamber 12, and an opening part of the discharge tube 16 is formed toward a shower dome 5 covering the upper part of a hopper 6 containing coffee beans.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drip type coffee extractor integrally provided with a mill for grinding coffee beans.

[0002]

2. Description of the Related Art Generally, a coffee extractor is mainly a so-called drip-type extractor in which coffee beans are crushed by a mill, sent to an extraction chamber, and hot water is poured from there to extract coffee.

FIG. 6 shows an example of a conventional drip-type coffee extractor with a mill of this type, and its configuration and operation will be described below.

The main body of the coffee extractor is provided with a lid 61 which can be opened and closed, a water tank (not shown), and a heating device (not shown), and stores coffee beans above an extraction chamber 62 for extracting coffee. Doing hopper 63, coffee bean crushing chamber 64,
There is a discharge port 66 of a discharge pipe 65 for discharging hot water, and a glass container 67 for storing coffee liquid is provided below the extraction chamber 62.

An arbitrary amount of water is put in a water storage tank, soot roasted coffee beans are put into a hopper 63, a filter 68 is set in the extraction chamber 62, and a time switch 69 is operated to start energization. The cutter 71 fixed to the tip of the shaft rotates at high speed in the crushing chamber 64, and the coffee beans flowing from the inflow port 72 entering the crushing chamber 64 from the coffee bean storage chamber are crushed and discharged below the eyes of the filter 68. Enter the paper filter in the basket. After the coffee beans have been crushed, the time switch 68 is switched to energization of the heating device, and the water in the water tank is checked from the bottom (not shown).
After being taken out through the heating device and heated through a heating device, it is pushed up by a water rising pipe (not shown) and discharged from the discharge pipe 66 to the upper part of the hopper 63, and the crushing chamber 64, the filter 6
After 8, the hot water is poured into the coffee powder in the coffee basket. Coffee liquid is extracted from the paper filter, flows down, and is stored in the glass container 67.

Incidentally, FIG. 5 shows a conventional cutter. The conventional cutter 71 is formed by four blades 73 with each pair of bending directions changed.

[0007]

However, in the conventional coffee extractor, the first problem is that the discharge port 66 of the discharge pipe 65 is open toward the coffee bean storage chamber, so that the coffee is discharged. Hopper 63 with hot water
The coffee powder adhering to the lower part of the machine and the crushing chamber 64 is washed, but the coffee powder adhering to the lid body 61 and the upper part of the hopper 63 covering the upper part of the coffee bean storage chamber is not washed.

A second problem is the cutter 71.
The gap between the blades 73 is large, a large amount of coffee beans flow into the crushing chamber 64, a large load is applied to the cutter 71, and uneven rotation occurs. Therefore, it is necessary to increase the power of the motor 70.

[0009]

As a means for solving the first problem of the present invention, the invention according to claims 1 to 5 is a crushing machine having a cutter for crushing coffee beans between the extraction chamber and the discharge pipe. We arranged a room and a hopper to store coffee beans,
An openable and closable lid is provided above the hopper, and a discharge pipe having an opening in the lid direction is provided between the hopper and the lid.

In addition to the means for solving the first problem, the second
As a means for solving the above problem, the invention according to claims 6 and 7 is such that a cutter for crushing coffee beans is provided with eight protrusions at the tip of a metal disk, and two pairs are formed from other two pairs. Longer and tilted toward the motor side, the other pair is formed shorter than the above two pairs and tilted toward the motor side as well, and the remaining one pair is tilted toward the coffee chamber crushing chamber inlet side and bent to form. ,
Further, the coffee bean inlet between the hopper and the crushing chamber is provided so as to be offset from the center of rotation of the cutter in the direction of rotation.

[0011]

In the structure of the first problem solving means, the hot water discharged from the discharge pipe cleans the coffee powder attached to the inner surface of the lid and the upper part of the hopper.

Further, in the structure of the second means for solving the problem, the inflow of coffee beans is restricted, the impact at the time of crushing is softened, the unevenness of rotation is reduced, the load is small, and the motor can be operated with a small power. And the coffee bean crushing noise will be reduced.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIGS. 1 and 2, 1, 2 and 3 are coffee extractor main bodies, 4 is a lid, 5 is a part of the lid formed in a dome shape (hereinafter referred to as a shower dome), and 6 is a hopper. , 7 is a grinding chamber, 8 is a motor, 9 is a cutter, 1
Reference numeral 0 is an inlet for coffee beans, 11 is a filter, 12 is an extraction chamber, 13 is a glass container, 14 is a switch section, and 15 is a water tank. The process of setting an arbitrary amount of water and coffee beans and setting a paper filter in the extraction chamber 12 to extract coffee is the same as the conventional process, and the description thereof is omitted.

The first characteristic structure of this embodiment is the discharge pipe and its peripheral structure. That is, as shown in FIG. 1, a shower dome 5 that covers the entire upper opening of the hopper 6 with a part of the lid 4, and an opening of the discharge pipe 16 is arranged between the hoppers 6 so as to face the inside of the shower dome 5. The discharge pipe 16 is integrally fixed to the lid 4 and the shower dome 5 and is configured to open and close. The outlet 17 of the shower dome 5 is connected to the motor 8 from the coffee bean inlet 10 between the hopper and the grinding chamber.
Provide a relatively small opening on the side. Furthermore, a lower annular rib 18 of the shower dome 5 and an annular rib 19 around the steam outlet are provided so as to contact the inner circumference of the upper opening of the hopper. Further, an eave-shaped edge portion 20 is provided above the coffee bean inlet 10.

In this structure, when the coffee beans are crushed, the coffee beans flow backward from the coffee bean inlet 10 and the shower dome 5
Alternatively, the coffee powder adhering to the inner surface of the hopper 6 is washed with hot water discharged from the discharge pipe and flows into the extraction chamber 12 to be reused before use. Discharge pipe 1
By integrating 6 with the lid 4 and the shower dome 5,
Even if the lid 4 is accidentally opened while the hot water is being discharged, the hot water is ejected to the shower dome 5, so the risk of the hot water being ejected to the outside is prevented, and the steam outlet of the shower dome 5 is used when crushing coffee beans. Inflow port for coffee beans that flows back with powder 1
It is arranged on the side of the motor 8 on the opposite side of 0 to provide an annular rib 19 around the motor 8 so that the powder does not scatter from the opening to the outside. Further, the lower annular rib 18 of the shower dome 5 so as to contact the inner circumference of the opening at the upper end of the hopper 6 prevents the coffee powder from scattering to the outside. Further, the eave-shaped edge portion 20 provided at the upper end of the coffee bean inlet 10 is effective in preventing backflow and scattering of the coffee powder from the grinding chamber 7 when the coffee beans are ground.

An embodiment of the second means for solving problems is shown in FIG.
And shown in FIG. In FIG. 3, the coffee bean inflow port 10 between the hopper 6 and the crushing chamber 7 is opened by being shifted in the direction of rotation from the center of rotation of the motor 8 and the cutter 9, and the upper end of the opening is an eave-shaped edge. 20 are provided. FIG. 4 shows a cutter, in which two pairs are formed on the outer circumference of the metal disk longer than the other two pairs, and a long inclined portion 21 inclined toward the motor side and another one.
The pair consists of a short inclined portion 22 which is shorter than the above two pairs and is inclined toward the motor side, and the other pair is an inlet side inclined portion 23 formed by inclining toward the coffee bean inlet 10 side. Protruding blades are arranged, and arcuate concave portions 24 are provided between the blades.

With this construction, the inflow of coffee beans into the crushing chamber 7 is restricted so as to gradually flow in the shape of the inlet 10 and the flat surface of the disk of the cutter 9, and the coffee beans are crushed by the eight blades. The load applied to the cutter 9 is made uniform, rotation unevenness of the motor 8 does not occur, and shocks are mitigated to reduce the generation of shock noise, so that a motor with low power can be used.

[0018]

As is apparent from the above description, the coffee extractor of the present invention discharges the coffee powder that flows back from the coffee bean inlet when the coffee beans are crushed and adheres to the shower dome and the inner surface of the hopper. Usability is improved because cleaning is performed with hot water discharged from the pipe.

Further, the inflow of coffee beans can be appropriately restricted, the rotation unevenness can be reduced, the noise when crushing coffee beans can be reduced, and the commercial value can be enhanced.

[Brief description of drawings]

FIG. 1 is a partial sectional view of a coffee extractor according to an embodiment of the present invention.

FIG. 2 is an overall perspective view of the same

FIG. 3 is a perspective view of an essential part of an embodiment of the present invention.

FIG. 4 is a perspective view of a cutter according to an embodiment of the present invention.

FIG. 5 is a perspective view of a conventional cutter.

FIG. 6 is a partial sectional view of a conventional coffee extractor.

[Explanation of symbols]

 4 Lid 5 Shower Dome 6 Hopper 7 Grinding Chamber 8 Motor 9 Cutter 10 Inlet 11 Filter 12 Extraction Chamber 13 Glass Container 16 Discharge Pipe 20 Edge

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Nonoguchi 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (7)

[Claims] 1. A main body, a water storage tank, an extraction chamber for extracting coffee, a water rising pipe led out from the bottom of the water storage tank via a check valve, and a heating device for heating water flowing to the water rising pipe. , A discharge pipe that communicates with the riser pipe and has a discharge port above the hopper,
A glass container for storing coffee liquid is provided at the bottom of the extraction chamber,
A coffee extractor having a crushing chamber having a hopper and a cutter built in between a discharge pipe and a brewing chamber and having a lid body that can be opened and closed above the hopper, and the discharge pipe has an opening in the direction of the lid body. 2. The coffee extractor according to claim 1, wherein an edge is provided above the inflow port of coffee beans between the hopper and the grinding chamber. 3. The coffee extractor according to claim 1, wherein the steam outlet of the lid that opens and closes above the opening of the hopper is located rearward of the coffee bean inlet between the hopper and the grinding chamber. 4. The coffee extractor according to claim 1, wherein a lower annular rib inscribed in the hopper opening is provided at a lower portion of a lid that opens and closes above the opening of the hopper, and an annular rib is provided around a steam outlet. . 5. The coffee brewing machine according to claim 1, wherein the lid above the opening of the hopper and the discharge pipe are integrally provided. 6. The coffee bean crushing cutter has a disk-shaped metal plate having eight projections formed at the tip thereof, two pairs longer than the other two pairs, and inclined toward the motor side. Form a pair shorter than the above two pairs and tilt it toward the motor side as well.
The coffee extractor according to claim 1, wherein the remaining pair is formed by inclining and bending toward the inlet side of the crushing chamber for coffee beans. 7. The coffee extractor according to claim 6, wherein the coffee bean inflow port connecting the hopper and the crushing chamber is provided so as to be offset from the rotation center of the cutter in the direction of rotation.