KR101932391B1 - Coffee bean milling device - Google Patents

Abstract

The present invention relates to a coffee bean grinding apparatus. More particularly, the present invention relates to a coffee bean grinding apparatus in which diameters of grinding members installed in a space where grinding of coffee is performed are arranged sequentially, and coffee powders having different particle sizes are sequentially discharged, thereby freely producing particle sizes according to the purpose of coffee. According to the present invention, in the process of producing coffee powder by grinding coffee beans, the coffee beans are prevented from being damaged by heat and the waste of coffee beans can be smoothly discharged while preventing the shape of beans from breaking or being damaged, thereby having an effect that the coffee powder production rate can be freely controlled.

Description

[0001] COFFEE BEAN MILLING DEVICE [0002]

The present invention relates to a coffee bean grinding apparatus, and more particularly, to a coffee bean grinding apparatus for sequentially and sequentially discharging coffee powders having different particle sizes by sequentially arranging the diameter of a grinding member installed in a space for grinding coffee beans, The present invention relates to a coffee bean grinding apparatus capable of freely producing particle sizes according to applications.

In general, coffee beans are not suitable for brewing tea by themselves, so they have been used to use processed powders or bake or grind coffee beans to boil tea. And, in order to maintain the original taste and aroma of coffee, it has been preferred to use the ground bean instead of using the processed powder.

The coffee bean grinder according to the prior art is provided with a supply part for supplying coffee beans at the upper part, a grinding part for grinding the coffee beans at the lower part of the supply part, and a grinding part for grinding the ground coffee at the lower part of the grinding part. .

The crushing section is provided with an upper crushing plate having a crushing blade formed on the lower side thereof and a lower crushing plate having a crushing blade formed on the upper side thereof. The upper crushing plate is rotatably provided, and the lower crushing plate is fixed. Coffee beans are supplied between the upper crushing plate and the lower crushing plate, and the coffee beans are crushed by the same principle as the millstone by the rotation of the upper crushing plate. That is, the coffee beans are supplied while the lower crushing plate is fixed, and the upper crushing plate is rotated, so that the coffee beans are crushed and collected in the collecting box.

However, in the coffee bean grinder according to the related art, if the upper crushing plate is not rotated at a high speed of 3000 rpm or more, the processing speed is reduced, and there is a disadvantage in that high heat is generated due to such high speed rotation, and the taste inherent to the coffee is deteriorated.

Further, in the coffee bean grinder according to the prior art, there is no mechanism for separating the coffee bean after the coffee bean has been crushed, so that the crushed coffee bean is also included in the product, thereby deteriorating the commercial value and the inherent taste of the coffee.

The pulverization by the high-speed rotation generates static electricity, and the ground coffee particles and the coffee coat are crushed by the static electricity, and the crushing part and the dozer (the container in which the crushed coffee particles gather) Thereby causing discomfort to the separation.

Further, since the lower crushing plate does not rotate but only the upper crushing plate rotates, there is a disadvantage in that the particle size is uneven.

To solve this problem, a technique of grinding coffee beans using two grinding rollers has been disclosed.

Fig. 1 is a side view schematically showing a grinding roller of a coffee bean grinder according to an embodiment of the prior art, and Fig. 2 is a plan view schematically showing a grinding roller of the coffee bean grinder of Fig.

The grinder of the prior art shown in Figs. 1 and 2 is provided with a hopper A for supplying a coffee bean C and a grinding blade 11 for grinding a coffee bean C supplied from the hopper A by rotation, And 21, and includes a pair of crushing rollers 10 and 20 having different rotational speeds.

A hopper A for feeding the coffee beans C is provided on the upper side of the crushing rollers 10 and 20 and a crushed product CP of crushed coffee beans C is placed below the crushing rollers 10 and 20 And a lower portion P for collection is provided. That is, the coffee beans C supplied from the hopper A are crushed by the crushing rollers 10, 20 and then stacked on the bottom P of the crusher. The hopper A and the lower housing P may be formed in a structure detachable from the main body H in which the crushing rollers 10 and 20 are rotatably engaged. The main body H refers to a frame in which the crushing rollers 10 and 20 are combined with the crushing rollers 60 and 70 and the interval adjusting parts 81, 83 and 85 described below.

A pair of crushing rollers (10, 20) is provided with a round bar having crushing blades (11, 21) formed on its outer circumferential surface so as to face each other in the horizontal direction. The crushing rollers 10 and 20 are rotatably coupled to the main body H at predetermined distances from each other.

Further, the pair of crushing rollers 10, 20 are rotated in opposite directions to each other. Specifically, each of the crushing rollers 10 and 20 feeds the supplied coffee beans C so that the coffee beans C supplied between the crushing rollers 10 and 20 can be crushed and stacked on the bottom P It rotates in the direction of pushing downward. As a result, the coffee beans C are crushed by the crushing blades 11, 21 passing between the crushing rollers 10, 20 rotating in opposing directions facing each other.

However, when such grinding rollers 10 and 20 are used, the particle size of the ground coffee powder varies depending on the interval between the pair of grinding rollers 10 and 20. However, since the crushing rollers 10 and 20 are cylindrically shaped, there is a problem that the coffee powder having different particle sizes can not be produced even if the gap between the two is adjusted.

KR 10-2013-0003599 A

SUMMARY OF THE INVENTION In order to solve the above-described problems, the present invention provides a method for maintaining a suitable stable pressure and proper feed rate in a body so that the coffee beans are not subjected to a crushing impact during the pulverizing process inside the body of the pulverizing apparatus, And to provide a coffee bean grinding apparatus capable of producing a coffee powder while preserving the flavor and taste of the coffee by securing a uniform peeling phenomenon.

The present invention also provides a coffee bean grinding apparatus which is capable of selectively or simultaneously producing coffee powders having different particle sizes in one apparatus by constituting a plurality of pulverizing members rotating in a roller form and making the diameter of the pulverizing members different from each other .

In addition, since the speed at which the coffee bean or coffee powder moves can be controlled within the pulverizing apparatus, the production amount of coffee powder per hour can be adjusted relatively freely, and it is possible to produce a small amount or a mass production corresponding to various market sizes, And to provide a coffee bean grinding apparatus capable of maximizing the size of the coffee bean grinders.

The present invention is directed to a coffee bean grinding apparatus for grinding coffee beans to produce coffee powder, comprising: a body 102 having a storage space therein; A rotating motor (104) for generating a rotating force of the crushing member; A rotating shaft 106 rotating within the body 102 by a rotational force of the rotating motor 104; An inlet hopper 108 installed at an upper end of the body 102 and serving as a passage through which the coffee beans are introduced; A debris discharge port 136 provided at a lower end of the body 102 to serve as a passage through which the unground coffee beans are discharged; A first screw (118) installed on the rotary shaft (106) and having a spiral groove formed on a cylindrical outer surface to move the coffee bean in a discharge direction; A first crushing member 122 which is installed on the rotating shaft 106 and rotates and has a cylindrical shape with a relatively small diameter and primarily generates coffee powder having a relatively large particle size; A second crushing member that is installed next to the first crushing member (122) in the rotating shaft (106) and rotates and is formed in a cylindrical shape having a relatively large diameter to generate coffee powder having a relatively small particle size; (124); A punch is formed while surrounding the outside of the first screw 118, the first crushing member 122 and the second crushing member 124, and a crushing net (126); A suction fan 112 installed at an air inlet 110 at an upper end of the body 102 to blow outside air into the interior of the body 102; And a blocking plate 116 installed at a powder outlet 114 of the lower end of the body 102 to selectively discharge the coffee powder to the outside of the body 102.

A pressure regulating plate 128 installed between the first crushing member 122 and the second crushing member 124 and having a disc protruding therein to change the size of the moving passage of the coffee bean, .

A first bracket 130 protruding from the outside of the pressure regulating plate 128; A second bracket 132 protruding from the outside of the body 102; And an adjusting bolt (134) threaded through the first bracket (130) and the second bracket (132).

And an inner wall of the grinding net 126 is formed with irregularities for grinding the coffee beans.

According to the present invention, in the process of producing coffee powder by pulverizing coffee beans, the coffee beans are prevented from being damaged by heat and the waste of coffee beans can be smoothly discharged while preventing the shape of the beans from breaking or being damaged. There is an effect that the speed can be freely adjusted.

1 is a side view schematically illustrating a grinding roller of a coffee bean grinder according to an embodiment of the prior art;
Fig. 2 is a plan view schematically showing a crushing roller of the coffee bean grinder of Fig. 1; Fig.
3 is a perspective view illustrating a structure of a pulverizing apparatus according to an embodiment of the present invention.
Fig. 4 is a cross-sectional view showing the internal structure of the pulverizing apparatus of Fig. 3; Fig.
5 is a cross-sectional view showing a state in which a coffee bean is moved inside a grinding apparatus.
6 is a sectional view showing the movement of coffee beans inside the grinding net.

Hereinafter, a "coffee bean grinding apparatus" (hereinafter referred to as "grinding apparatus") according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 3 is a perspective view showing the structure of a grinding apparatus according to an embodiment of the present invention, FIG. 4 is a sectional view showing the internal structure of the grinding apparatus of FIG. 3, and FIG. 5 is a cross- And FIG. 6 is a sectional view showing the movement of the coffee beans inside the grinding net.

The pulverizing apparatus 100 of the present invention is a pulverizing apparatus 100 for pulverizing a coffee bean similar to that of a general structure, a portion for pulverizing, a portion for driving (rotating) the pulverizing means, and a portion for discharging coffee powder, debris, Lt; / RTI >

The body 102 is a means through which the coffee beans are introduced and the grinding process proceeds, and a space is formed therein to provide a grinding member. Typically, the body 102 has a cylindrical inner space and is disposed in a state of being parallel to the ground or inclined at a predetermined angle. The pulverizing member rotates about the rotating shaft 106 arranged so as to coincide with the central axis of the cylinder, and turns the coffee bean put into the body 102 into a powder state. The coffee powder produced in the grinding process escapes through the discharge passage at the bottom and the coffee bean residue in the granulated state without being pulverized is discharged through the residue outlet 136 formed at the end portion of the body 102 in the proceeding direction.

A rotating motor 104 is installed at one side of the body 102 and the rotating force of the rotating motor 104 is transmitted to the pulverizing member inside the body 102 through the rotating shaft 106. The rotation motor 104 may be installed inside the body 102, and a speed reducer, a transmission gear, or the like may be installed at a portion connected to the rotation shaft 106.

A loading hopper 108 is installed at an upper end of the body 102. The inlet hopper 108 communicates with the inner space of the body 102, and serves as an inlet for introducing the coffee beans from the outside into the inside of the body 102. The feeding hopper 108 may be provided with a screw or a conveyor for pushing the coffee beans at a constant speed.

One or two air inlets 110 are provided at the upper end of the body 102, and one suction fan 112 is installed in each of the air inlets 110. The suction fan 112 is a means for blowing air into the inside of the body 102 from the outside, and is installed inside the air inlet 110 to increase the suction efficiency. It is preferable that the plurality of suction fans 112 installed in the present invention can be individually turned on and off.

At the lower end of the body 102, one or more powder discharge openings 114 are provided, and each of the powder discharge openings 114 is provided with a shielding plate 116 one by one. The shutoff plate 116 selectively closes or opens selectively as it rotates about the hinge and discharges the coffee powder produced in the body 102 to the outside. Since the suction and discharge of air is designed to smoothly discharge foreign matter such as coffee bean spots and dust, it is preferable that the powder discharge ports 114 are disposed directly below the air inlet 110 in a one-to-one manner.

The air inlet 110 may be provided with a shutter or a blocking plate (not shown).

A rotating shaft 106 is disposed in the center of the body 102 along a central axis. A screw and a crushing member are provided on the rotating shaft 106 according to the position. The screw is a means for moving the coffee bean to be crushed, and the crushing means is a means for crushing the coffee bean into a powder state.

In the drawings of the present invention (FIGS. 3 and 4), the first screw 118, the first crushing member 122, and the second crushing member 122 are moved from the left end portion (where the loading hopper is located) to the right end portion (where the residue outlet is located) The second crushing member 124, and the second screw 120 are located. Since the rotating shaft 106 is connected to the center of the first screw 118 and the first and second crushing members 122 and 124 and the second screw 120, .

The first screw 118 and the second screw 120 have a spiral groove formed on a cylindrical surface, and push the coffee bean so that the coffee bean can move in the discharge direction by rotation. Although the polishing means may be mounted on the screw, the screw is usually used only as a moving means.

The first crushing member 122 and the second crushing member 124 function to crush the coffee beans into a powder state by friction with the pressure of the surface. A metal material is usually used for the crushing member, and it is preferable to minimize the heat generation or transfer through the surface treatment so that the state of the coffee powder is not deteriorated.

The two grinding members are cylindrically shaped and have the same shape but can be set to have different sizes from each other. In the present invention, the diameter of the first crushing member 122 on the front side is relatively smaller and the diameter of the second crushing member 124 on the rear side is relatively larger.

When the diameter of the crushing member is smaller, a lot of space is formed between the crushing net surrounding the crushing member. Therefore, when the grinding is performed in this space, the particle size of the coffee powder is relatively larger. On the contrary, as the space between the grinding member and the grinding net becomes smaller, the particle size of the coffee powder will become relatively smaller.

The first screw 118 and the second screw 120, the first crushing member 122 and the second crushing member 124 are disposed inside the crushing net 126 made of a perforated network. The crushing net 126 has a structure to enclose such a crushing member so that the crushing process proceeds while the coffee bean moves between the crushing member and the inner space of the crushing net 126. The pulverized net 126 has pores formed therein, and the powdered coffee powder is discharged to the outside through the pulverizing net 126.

The first screw 118 pressurizes the coffee beans before they are crushed through the feed hopper 108, in the direction of advance. By the pressure applied to the coffee bean, the coffee bean advances forward, and homogeneous processing becomes possible while moving at a constant speed and amount.

The second screw 120 moves the unground coffee beans to the ends and discharges them through the debris outlet 136.

Although the first screw 118 is generally made of a material having no abrasive action, a pressure is applied to the coffee bean by a force for pushing the introduced coffee bean forward, and a frictional force is generated thereby causing a certain degree of exfoliation .

The first grinding member 122 grinds the coffee beans into a powder state with a strong pressure and a grinding force. In this process, coffee having a relatively large particle size is produced while passing through the first crushing member 122. The coffee powder having passed through the first crushing member 122 is discharged to the outside through the powder outlet 114 at the lower side.

The second crushing member 124 has a larger diameter than the first crushing member 122 and therefore has a smaller space with the crushing network 126. Therefore, Is smaller than the particle size of the coffee powder produced by the first crushing member (122).

Finally, the final residual coffee beans are pulverized by the weak friction force through the second screw 120 to produce homogeneous and clean coffee powder. The remaining coffee beans and other debris that have not been crushed while passing through the two grinding members are discharged through the debris discharge port 136.

And the coffee in the powdered state at each step is discharged downward through the powder outlet 114 and used for the production of coffee.

The suction fan 112 installed at the upper end of the body 102 causes a flow of air from the top downward to the interior of the body 102. Due to the flow of air and gravity, 114). Partially, the coffee beans may remain inside the body 102 or the grinding net 126, and the inside may be periodically cleaned to remove foreign matter.

As shown in the figure, in the present invention, a plurality of spaces are divided with a boundary of the pressure regulating plate 128, and one pulverizing member or a screw may be installed in each space. In some cases, more grinding elements or screws can be installed continuously than those shown in the drawings.

The crushing means (screw, crushing member) used in the present invention is disposed inside the perforated crushing net 126. The grinding net 126 is made in a structure that protrudes in the longitudinal direction inside the cylindrical perforated network.

On the inner wall of the grinding net 126, unevenness is formed for grinding the coffee beans. The unevenness is a structure for determining the size of the coffee powder, and it is formed in an appropriate size depending on the degree of grinding of the coffee bean.

The pores formed in the grinding net 126 are smaller than the size of the coffee beans and larger than the particle size of the coffee powder. Thus, the powdered coffee is discharged downward through the grinding net 126 and packed in a separate device. The coffee powder will move more downwardly in accordance with the air flow (generated in the top to bottom direction) caused by the suction fan 112.

The first bracket 130 protrudes from the outer side of the pressure regulating plate 128. The first bracket 130 is fitted with the adjustment bolt 134 and the first bracket 130 can be moved in accordance with the rotation of the adjustment bolt 134. A second bracket 132 protrudes from a surface of the longitudinal side body 102 of the first bracket 130. The adjustment bolt 134 is screwed so as to penetrate the first bracket 130 and the second bracket 132 at the same time. The adjustment bolt 134 is screwed to either the first bracket 130 or the second bracket 132 for the left and right movement of the pressure regulating plate 128 and is coupled to the other one so that the position thereof does not change.

In this state, when the adjustment bolt 134 is rotated, the threaded bracket moves left and right according to the rotation direction.

When the pressure regulating plate 128 is moved to the left and right, the position where the inner original plate is located in the space between the pulverizing members is changed. When the pressure regulating plate 128 approaches the first crushing member 122 located on the front side (the side closer to the inlet) in the traveling direction of the coffee beans, the movement path of the coffee beans in this portion is narrowed. As a result, the pressure of the moving coffee bean is increased while being crushed, and the frictional force and crushing force are increased.

On the contrary, when the pressure regulating plate 128 is moved away from the first crushing member 122, the movement passage is widened and the pressure is reduced.

In this way, the pressure applied to the coffee bean can be changed while adjusting the position of the pressure regulating plate 128, so that the degree of crushing and the moving speed of the coffee powder can be controlled.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, As will be understood by those skilled in the art. Therefore, it should be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than the foregoing description, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

100: Grinding device 102: Body
104: rotation motor 106:
108: Feed hopper 110: Air inlet
112: Suction fan 114: Powder outlet
116: blocking plate 118: first screw
120: second screw 122: first crushing member
124: second crushing member 126: crushing net
128: pressure regulating plate 130: first bracket
132: second bracket 134: adjusting bolt
136: debris outlet

Claims (4)

A coffee bean grinding apparatus for grinding coffee beans to produce coffee powder,
A body 102 having a storage space therein;
A rotating motor (104) for generating a rotating force of the crushing member;
A rotating shaft 106 rotating within the body 102 by a rotational force of the rotating motor 104;
An inlet hopper 108 installed at an upper end of the body 102 and serving as a passage through which the coffee beans are introduced;
A debris discharge port 136 provided at a lower end of the body 102 to serve as a passage through which the unground coffee beans are discharged;
A first screw (118) installed on the rotary shaft (106) and having a spiral groove formed on a cylindrical outer surface to move the coffee bean in a discharge direction;
A first crushing member 122 which is installed on the rotating shaft 106 and rotates and has a cylindrical shape with a relatively small diameter and primarily generates coffee powder having a relatively large particle size;
A second crushing member that is installed next to the first crushing member (122) in the rotating shaft (106) and rotates and is formed in a cylindrical shape having a relatively large diameter to generate coffee powder having a relatively small particle size; (124);
A punch is formed while surrounding the outside of the first screw 118, the first crushing member 122 and the second crushing member 124, and a crushing net (126);
A suction fan 112 installed at an air inlet 110 at an upper end of the body 102 to blow outside air into the interior of the body 102;
And a blocking plate (116) installed at a powder outlet (114) at a lower end of the body (102) to selectively discharge the coffee powder to the outside of the body (102). The method according to claim 1,
A pressure regulating plate 128 installed between the first crushing member 122 and the second crushing member 124 and having a disc protruding therein to change the size of the moving passage of the coffee bean, Container, coffee bean grinding device. 3. The method of claim 2,
A first bracket 130 protruding from the outside of the pressure regulating plate 128;
A second bracket 132 protruding from the outside of the body 102;
Further comprising: an adjustment bolt (134) screwed through the first bracket (130) and the second bracket (132). The method according to claim 1,
Wherein a grindstone for grinding the coffee beans is formed on the inner wall of the grinding net (126).

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