KR900007762Y1 - Combined coffee grinding and brewing machine - Google Patents

Abstract

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Description

Coffee grinder

Figure 1 shows an embodiment of the present invention, Figure 1 is a longitudinal front view of the whole.

2 is an enlarged vertical front view of the main part.

3 is an exploded perspective view of the main part.

* Explanation of symbols for main parts of the drawings

6: crushing case 7: outer case

9: open end 11: inner case

12, 13: small hole group 14: powder filter part

18: cutter (cutter crushed body)

The present invention relates to a coffee grinder capable of automatically taking out coffee powder produced in a grinding case out of the grinding case.

Conventionally, in this type of coffee grinder, the powder filter part made of a wire mesh is formed in the trough formed in the side wall of the periphery of the grinding case while centering the grinding body in the bottom of the plastic grinding case. By mounting and fixing, the coffee beans contained in the grinding case are pulverized into a pulverized body to produce coffee powder, and the coffee powder is discharged out of the pulverized case from the powder filter part by centrifugal force by the rotation of the pulverized body.

However, when the coffee beans are ground, the coffee beans in the grinding case are vigorously agitated by the grinding body, so the inner surface of the grinding case is severely rubbed by the coffee beans.

However, in the above-described conventional configuration, since the grinding case is made of plastic, the friction coefficient of the inner surface of the grinding case becomes large, thereby causing a large amount of frictional heat between the inner surface of the grinding case and the coffee beans that sharply rub it when grinding the coffee beans. Since a part of the coffee powder is deteriorated by this frictional heat, there is a drawback of damaging the flavor of the coffee liquid extracted therefrom.

In addition, since the powder filter part made of wire mesh is mounted and fixed in the opening of the grinding case, coffee powder is inserted into the joint of the powder filter part and the opening of the grinding case so that the coffee powder inserted in the above joint remains as it is. The disadvantage is that it is easy to clean, which is not easy to clean and which is not hygienic.

The present invention has been made in consideration of the above circumstances, and an object of the present invention is to provide a coffee grinder capable of preventing coffee powder from being deteriorated by frictional heat and at the same time improving the cleaning effect.

The present invention is constructed by mounting the inner case of metal material in the outer case made of plastic, forming the powder filter part in the side wall of the periphery of the outer case, and opening the outer case in the aforementioned inner case. It is characterized in that it is formed by forming a small group of holes to be aligned in line with the place, thereby reducing the friction coefficient of the inner case of the inner case, which is the inner surface of the grinding case, and at the same time There is no seam between the groups.

Hereinafter, an embodiment in which the present invention is applied to a coffee maker will be described based on the drawings.

First, in FIG. 1, "1" is the main body of the coffee maker, and the water storage tank 2 of the cartridge type (cartridge type) is installed in the left side which shows this, and the heating table 3 is provided in the lower right part. .

In this heating stand 3, a well-known hot water generating mechanism consisting of a heating tube and a heater not shown is provided. The water in the water storage tank 2 is supplied to the heating tube described above to become hot water.

"4" is a bottle placed on the heating table (3), "5" is a longitudinal motor mounted in the center of the main body 1, "6" is a motor (5) The structure of the grinding case 6 will be described below with reference to FIGS. 2 and 3.

&Quot; 7 " is an outer case formed of plastic, the lower side of which is integrally formed with a cylindrical portion 8, which cylindrical portion 8 is formed on top of the motor 5 (not shown). It is fitted by means of bayonet fittings.

"9" is a rectangular ingot formed in the circumferential side wall portion of the outer case 7, and "10" is a hood portion formed so as to cover the indent 9 from the outside.

&Quot; 11 " is an inner case molded from a thin metal plate, and the inner case 11 is mounted in the outer case 7 so as to rotate in the circumferential direction, thereby constituting the pulverization case 6. As shown in FIG.

"12" and "13" are groups of small holes provided in the circumferential side of the inner case 11 in the circumferential direction thereof, for example, two, and have different hole diameters of one small hole group 12. It is larger than the hole diameter of the small hole group 13 of the side.

These small hole groups 12 and 13 constitute the powder filter part 14 together with the opening 9 of the outer case 7, and the inner case 11 is circumferentially related to the outer case 7. By rotating in the direction, one of the small hole groups 12 and 13 is aligned with the opening 9 of the outer case 7.

"11a" is a cutout portion formed above the small group of holes 12 and 13 of the inner case 11, and "15" indicates the upper end of the inner case 11 to the outside of the outer case 7. It is a hand hanger formed by folding it.

"16" is formed at the center of rotation of the bottom of the inner case 11, and is a hole for supporting the shaft, and the drive shaft 17 is freely rotated from the lower side so that the cutter which is a crushed chain at the upper end of the drive shaft 17 ( 18 is clamped by a nut 19, whereby the cutter (crushing body) 18 is centered freely on the bottom of the inner case 11.

The rotary shaft of the motor 5 is connected to the connecting hole 17a formed below the drive shaft 17 so as to be inserted and detached.

As shown in FIG. 1, the shallow container-shaped cap 20 is fitted and fitted in the open part of the upper surface of the main body case 6 comprised as mentioned above.

On the right side of the cap 20, the outlet port 21 is formed to be cut out, and at the edge below the outlet port 21, the hot water guide part 22 of the tongue shape is obliquely downward. It is formed toward.

This hot water guide portion 22 is inserted into the hood portion 10 through the cutout portion 11a of the inner case 11 and the open portion 9 of the outer case 7.

"23" is a hot water spout provided so as to rotate above the cap 20, and the hot water generated in the heating tube of the above-mentioned hot water generating apparatus is discharged from the hot water spout 23 to the cap 20. Squirt up.

"24" is a container-shaped extractor having an extracting opening 25 at the bottom, which is formed by a slide operation from the right side with a paper filter 26 installed therein. It can be attached to the bottom and attached.

Next, the operation of the configuration as described above will be described.

In the case of making a normal concentration of coffee liquid (so-called regular coffee), the inner case 11 of the grinding case 6 is rotated with respect to the outer case 7 so that the small hole group 13 with the smaller diameter of the hole is opened. Aligned with the place 9, it is set in the state shown in FIG. 1 by containing coffee beans and water in the grinding case 6 and the water storage tank 2, respectively.

When the motor 5 is electrically driven, the coffee beans are crushed by the crushed body 18.

The coffee powder produced in this way protrudes outward from the small hole group 13 and the opening 9 by centrifugal force when the particle size is smaller than the hole diameter of the small hole group 13. And falls on the paper filter 26 in the extractor 24.

Therefore, on the paper filter 26, the small pore group 13 is separated from the coffee powder of the normal granularity according to the hole diameter.

In this way, when the ground coffee is ground, the inner case 11 constituting the every surface of the ground case 6 is made of metal, so even if the ground coffee is severely rubbed on the inner surface of the inner case 11, the inner case ( The frictional heat generated between 11) and coffee beans is reduced, so that the produced coffee powder is not deteriorated by the frictional heat.

In addition, the inner surface (inner case 11) of the pulverization case 6 is not shaved by friction, and unlike the prior art, crushed powder of plastic (pulverization case) is not mixed with coffee powder in the extractor 24. .

After crushing the coffee beans in this way, when the heater of the boiling water generating device is electrically powered, the water in the water storage tank 2 is in turn heated and spouted from the hot water inlet 23 to the cap 20 to provide a hot water guide portion ( 22), it flows down and is sprayed onto coffee powder in the extractor 24.

The hot water passes through the coffee powder and the paper filter 26 and then flows out through the extraction port 25 to be stored as regular coffee in the boot 4.

In addition, when extracting a light and rich coffee liquid (so-called American coffee), the inner case 11 of the grinding case 6 is rotated with respect to the outer case 7 so that the larger hole diameter is smaller. Align the group 12 with the opening 9 and align.

Then, as described above, when the coffee powder produced in the grinding case 6 has a particle size smaller than the hole diameter of the small hole group 12, it passes through the small hole group 12 and moves into the extractor 24. Since it falls on the paper filter 26, the extractor 24 will contain coffee powder of coarse particle size according to the hole diameter of the small hole group 12. As shown in FIG.

From this coarse grained coffee powder, American coffee is extracted, which is light in concentration and rich in flavor.

By the way, since the powder filter part 14 is formed by forming the small hole groups 12 and 13 in the inner case 11, unlike the prior art, the inner surface (inner case 11) and powder of the pulverization case 6 differ. A joint does not arise between the filter parts 14, and both continue smoothly.

Due to this, when the coffee grounds are ground, coffee powder may not get stuck between the inner surface of the inner case 11 and the outer edge of the powder filter unit 14.

Therefore, the coffee powder remaining after being attached to the inner surface of the inner case 11 after extracting the coffee liquid is easily removed when washed with water, and thus has an excellent cleaning effect.

In addition, in the present embodiment, since the pulverization case 6 is constructed by mounting the metal inner case 11 in the plastic outer case 7, even if the inner case 11 is molded from a thin metal plate in consideration of formability. Since the inner case 11 is shaped to be reinforced by the outer case 7 from the outside thereof, sufficient strength can be obtained.

In addition, since the inner case 11 is made of metal, the drive shaft 17 of the cutter (crushing body) 18 can be inserted and supported directly into the hole 16 for supporting the shaft formed at the bottom of the inner case 11. Therefore, the center support structure of the cutter 18 can be simplified.

In the related art, since the whole grinding case 6 is conventionally formed of plastic, the cutter support member made of insert is fixed to the bottom of the grinding case by insert molding. There was a drawback to the complicated structure.

In addition, in the above embodiment, the inner case 11 is installed so as to rotate with respect to the outer case 7, and at the same time, a plurality of small hole groups having different hole diameters in the inner case 11 are installed, for example, two. Because of this configuration, there is an excellent practical effect that it is possible to select the granularity of the coffee powder coming out through the powder filter unit 14, but it is not necessary to configure it in this way, and while fixing the inner case 11 to the outer case 7, Even if the inner case 11 is provided with only one small hole group, the intended purpose of the present invention can be sufficiently achieved.

In addition, the present invention can be carried out by applying a wide range of coffee grinder not having a coffee liquid extraction function, as well as a coffee maker with a coffee liquid extraction function as described above.

As the present invention is evident from the above description, since the inner surface of the pulverization case 6 is constituted by the inner case 11 made of metal, the friction coefficient of the inner surface of the pulverization case 6 can be reduced, so that the ground coffee is ground. When the coffee powder is prevented from being deteriorated due to frictional heat, and furthermore, the powder filter part 14 is formed by forming a small group of holes aligned with the opening of the inner case 11, so the grinding case 6 There is no seam between the inner surface of the filter and the outer edge of the powder filter unit 14. Therefore, the coffee powder may not be stuck between them, and the remaining coffee powder attached to the inner surface of the inner case 11 may be washed only with water. It can be easily removed, thereby improving the cleaning effect.

Claims (2)

In the coffee grinder in which the coffee beans contained in the grinding case are pulverized by a pulverizing body to produce coffee powder, and the coffee powder can be taken out of the grinding case by the powder filter unit installed in the grinding case described above. The pulverization case is constructed by attaching a metal inner case in a plastic outer case, and forming the opening of the above-described powder filter part in the side wall portion of the circumference of the outer case. A coffee grinder comprising: forming a small group of holes aligned with the opening. The coffee grinder according to claim 1, wherein the inner case is installed so as to rotate in the circumferential direction with respect to the outer case, and a plurality of small hole groups are provided in the circumferential direction of the inner case with different hole diameters.