KR102068124B1 - Coffee bean grinder - Google Patents

Abstract

The present invention relates to a coffee bean grinder which comprises: a coffee bean storage casing unit in which coffee bean is inserted inside and a coffee bean discharge unit for discharging crushed coffee bean powder is located in a lower surface; a coffee bean crushing blade unit located in the coffee bean discharge unit of the coffee bean storage casing unit to crush the coffee bean; and an elevating unit for particle size control controlling the particle size of the crushed coffee bean powder by moving at least one side of the coffee bean storage casing unit and the coffee bean crushing blade unit and adjusting a gap between an inner surface of the coffee bean discharge unit and the crushing blade unit, thereby maximizing the flavor and taste of the coffee bean by automatically adjusting the particle size of the coffee bean powder crushed according to the classification of the coffee bean.

Description

Coffee Bean Grinder Device {COFFEE BEAN GRINDER}

The present invention relates to a coffee bean grinder device, and more particularly, to a coffee bean grinder device for adjusting the size of the ground particles of the coffee beans according to the state of the coffee beans.

Recently, as the demand for coffee increases, coffee beans, which can feel the unique flavor and taste of coffee instead of instant coffee, have been widely consumed.

In general, coffee beans are prepared by pouring hot water into the ground coffee powder while the coffee beans are extracted while the water drips through the coffee beans.

As the interest and demand for coffee beans have increased, there has been an increase in the number of cases where coffee beans are ground and drowned by coffee grinders in homes, offices, and outdoors.

In addition, there is a growing demand for coffee bean vending machines in which coffee beans are automatically ground to produce coffee beans.

Conventional coffee grinders include a grinder housing into which coffee beans are placed, and a grinding blade portion rotatably positioned in the grinder housing to grind the beans introduced into the grinder housing by rotation of the grinding blade between the grinder housing and the grinding blade portion.

However, the grinder for grinding conventional beans has a fixed distance between the grinding blade and the grinder housing, which causes the beans to be crushed and grounded in the same particle size regardless of the sorting or storage environment of the coffee beans due to roasting. It is becoming.

In particular, the coffee machine vending machine is provided with a storage container for storing beans in a large capacity for sale, the beans can be stored in a large capacity storage container for a long time, so the state of the beans is different depending on the temperature and humidity in the storage container In the case of manufacturing ground coffee by grinding coffee beans, there was a problem that the quality of the coffee beans sold was not uniform.

Registered Korean Patent No. 10-1544308 'Canister Grinder' (registered on August 6, 2015)

SUMMARY OF THE INVENTION An object of the present invention is to provide a coffee bean grinder device for adjusting the particle size of ground coffee powder ground according to the type of beans and the storage state of the coffee beans, and a method for grinding coffee beans using the same.

In order to achieve the above object of the present invention, an embodiment of the coffee bean grinder device according to the present invention is a bean storage casing part in which a storage space in which coffee beans are stored, is located in the bean storage casing part A first bean grinding blade portion in which a coffee bean discharge portion is disposed, a second coffee bean grinding blade portion positioned to be spaced apart from the first coffee beans grinding blade, and rotated to grind coffee beans, the first coffee beans grinding blade and the second coffee beans; At least one side of the grinding blade is moved up and down, characterized in that it comprises a lifting unit for adjusting the particle size for adjusting the distance between the first bean grinding blade portion and the second bean grinding blade.

In the present invention, the lower surface of the first ground grinding blade portion is positioned with a first guide blade having a larger diameter toward the lower side, the upper surface of the second ground grinding blade, the second guide blade having a shape gradually larger toward the upper side Located in the lower part of the second ground grinding blade portion is a rotating motor for grinding beans, the second ground grinding blade is rotated by the ground grinding motor for ground beans is located between the first ground grinding blade Can be crushed.

One embodiment of a coffee bean grinder device according to the present invention to achieve the object of the present invention is a colorimeter for detecting the type of beans by detecting the chromaticity of the beans stored in the bean storage casing; And it may further include a control unit for controlling the operation of the elevating unit for adjusting the particle size with the chromaticity information of the beans received from the colorimeter.

In order to achieve the object of the present invention one embodiment of a coffee bean grinder device according to the present invention further comprises a temperature sensor unit for measuring the temperature and delivering temperature information to the control unit, the control unit according to the temperature information The distance between the ground grinding blade portion and the second ground grinding blade portion may be corrected at a predetermined value to ground the ground coffee beans.

In the present invention, the temperature sensor unit may detect the ambient temperature of the coffee extracting unit which extracts coffee by pouring hot water into the ground powder.

In the present invention, when the temperature information is lower than the reference temperature range, the control unit lowers the grinding degree of the beans by a predetermined temperature correction value to increase the particle size of the ground coffee powder, and when the temperature information is higher than the reference temperature range, grinding By raising the degree by a predetermined temperature correction value it is possible to reduce the particle size of the ground coffee powder.

In order to achieve the object of the present invention one embodiment of a coffee bean grinder device according to the present invention further comprises a humidity sensor unit for measuring the humidity and delivering the humidity information to the control unit, the control unit is based on the humidity information The distance between the first ground mill blade and the second ground mill blade may be corrected at a predetermined value to ground the ground coffee beans.

In the present invention, the humidity sensor unit may detect the humidity in the bean storage casing unit.

In the present invention, the control unit increases the grinding degree by a predetermined humidity correction value when the humidity information is lower than the reference humidity range to reduce the particle size of the ground coffee powder, and when the humidity information is higher than the reference humidity range, The particle size of the coffee beans can be increased by lowering the humidity correction value.

In the present invention, the control unit is set to the minimum reference particle size and the maximum reference particle size as a reference of the degree of grinding and grinding degree to correspond to a plurality of types of beans divided according to the roasting degree of the beans, the control unit is the minimum reference particle The apparatus may further include a reference particle size input unit capable of inputting a size and a maximum reference particle size.

In the present invention, the first elevating guide projection is projected on the outer circumferential surface of the first ground grinding blade portion, the first elevating guide projection is inserted into the inner circumferential surface of the bean storage casing portion in the longitudinal direction, the first elevating guide is moved A guide slit is positioned, the lifting and lowering portion for adjusting the particle size is located in a rotatable manner within the first lifting guide slit portion of the bean storage casing portion and the panel lifting screw screwed through the first lifting guide projections It may include a panel lifting motor for rotating the member and the screw panel for lifting the panel.

In the present invention, the elevating unit for adjusting the particle size is located on the inner circumferential surface of the second elevating guide protrusion, which is spaced apart from the first elevating guide protrusion in the circumferential direction on the outer circumferential surface of the first ground grinding blade. Positioned to extend from the second lifting guide slit and the second lifting guide slit, the second lifting guide slit being positioned long in the downward direction and being movably inserted therethrough It may further include a lifting guide bar member.

In the present invention, a ball bearing rolling in contact with the inner circumferential surface of the bean storage casing part may be inserted into the outer circumferential surface of the first bean ground grinding blade part.

In the present invention, the coffee beans discharge portion has a top and bottom through the discharge port shape, the inner peripheral surface is inclined to increase the inner diameter gradually toward the lower portion, the inclined cone shape, the second coffee beans grinding blades so that the outer diameter gradually increases toward the lower end It has an inclined cone shape, the inclination angle of the inner circumferential surface of the coffee beans discharge portion and the inclination angle of the outer circumferential surface of the second coffee beans grinding blade have a different inclination angle gradually increases toward the upper side, the most spaced from the lower end side of the coffee beans discharge portion Can be narrowed.

In the present invention, the second ground mill blade is rotated by a ground mill rotating motor unit mounted on the upper side of the bean storage casing portion to ground the beans, and the raising and lowering portion for adjusting the particle size is the main portion of the rotating motor portion for grinding beans The elevating rotary motor unit mounted on the shaft unit, the elevating screw rotated by the elevating rotary motor unit, and the elevating screw are screwed inwardly and movably coupled to the main shaft unit, and the second side on the end side. It may include a moving shaft portion to which the ground grinding blade is connected.

In the present invention, a plurality of locking projections protrude from either the outer circumferential surface of the movable shaft portion and the inner circumferential surface of the main shaft portion, and the locking protrusion is inserted into the other side of the outer circumferential surface of the movable shaft portion and the main shaft portion so as to be linearly movable. The slit portion for movement guidance, which is positioned so as to be long, may be positioned in the longitudinal direction.

The present invention has an effect of maximizing the flavor and taste of the beans by automatically adjusting the particle size of the ground powder to be ground in accordance with the classification of beans.

In addition, the present invention detects the classification of beans and automatically adjusts the particle size according to the type of beans, greatly improves the convenience of use, and allows the production of coffee beans of uniform quality.

In particular, the present invention detects the environmental conditions in which the beans are stored and accordingly adjusts the grain size of the beans to provide the coffee beans having a uniform flavor and taste at the time of purchase related to the external environmental conditions in the coffee beans vending machine at the time of purchase This has the effect of greatly improving satisfaction.

1 is a schematic view showing one embodiment of a coffee bean grinder device according to the present invention;
Figure 2 is a plan sectional view showing one embodiment of a coffee bean grinder device according to the present invention.
3 is a schematic view showing another embodiment of a coffee bean grinder device according to the present invention;
Figure 4 is an exploded perspective view showing an embodiment of the elevating unit for adjusting the particle size in the coffee beans grinder apparatus according to the present invention.
Figure 5 is a flow chart showing an embodiment of a coffee bean grinding method according to the present invention.

The present invention is explained in more detail.

When described in detail with reference to the accompanying drawings a preferred embodiment of the present invention. Prior to the description of the present invention, the terms or words used in the specification and claims described below should not be construed as being limited to the ordinary or dictionary meanings. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only one of the most preferred embodiments of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

1 is a schematic view showing an embodiment of a coffee bean grinder device according to the present invention, an embodiment of the coffee bean grinder device according to the present invention with reference to FIG.

One embodiment of the coffee bean grinder device according to the present invention includes a bean storage casing unit 100 can be inserted and stored.

The bean storage casing unit 100 has a storage space in which the beans to be ground can be stored.

In addition, the inside of the coffee bean storage casing 100 serves to support the coffee beans to be stacked on the upper part, and the first coffee grinder blade 110 having a coffee bean discharge part for discharging the coffee beans in the storage space to the lower side is positioned. do.

In addition, a second bean grinding blade portion 200 positioned to be spaced apart from the first bean grinding blade portion 110 may be positioned at a lower side of the first bean grinding blade portion 110.

A guide hopper 100b for guiding the beans stored in the storage space into the coffee bean discharge part 100a is positioned above the coffee bean discharge part 100a.

Note that the guide hopper portion 100b may be embodied in various forms with a known hopper structure through which the upper side and the lower side penetrate in a shape that increases in diameter toward the upper side.

That is, the first ground bean grinding blade unit 110 is located in the lower portion of the coffee bean support member 111, the coffee bean support member 111, the coffee beans are stacked up and the guide hopper portion (100b) is located, the guide hopper portion It may include a first bean grinding blade member 112 is located with the coffee beans discharge portion connected to the.

The first guide blade portion 112a having a diameter that is larger toward the lower side is positioned on the lower surface of the first bean grinding blade portion 110.

The lower part of the second ground grinding blade portion 200 is a rotary motor for grinding the beans 210 is located, the second ground grinding blade portion 200 is rotated by the rotary motor for grinding the ground mill 210 to ground the first beans The beans are ground between the blades 110.

On the upper surface of the second bean grinding blade portion 200 is located a second guide blade portion 200a of the diameter gradually increasing toward the upper side.

As an example, the first ground mill blade 110 and the second ground mill blade 200 are flat cutters each having a disc shape.

A powder storage unit 400 in which the ground coffee powder may be stored is positioned below the second coffee beans grinding blade 200.

In the inside of the bean storage casing unit 100, a discharge space for discharging the ground coffee powder is disposed under the second bean grinding blade unit 200, and the powder storage unit 400 is located in the discharge space.

In addition, the ground grinding motor portion 210 is fixed by a motor support 211 for supporting the motor casing on the inner circumferential surface of the bean storage casing 100, the first ground grinding blade portion in the motor support 211 Between the 110 and the second ground grinding blade 200, the slit 211a for passing through the ground powder can be passed in the circumferential direction and the first ground grinding blade 110 and the first It is pulverized between the two ground grinding blades 200 and the ground coffee powder discharged to the outside of the first ground grinding blade 110 and the second ground grinding blade 200 to the powder storage unit 400 located below It should be noted that the present invention can be modified and implemented in various known structures that can be stored.

The bean storage casing unit 100 is a grinder casing in which the first ground grinding blade unit 110, the second ground grinding blade unit 200, the rotating motor unit 210 for grinding the ground, the elevating unit 300 for adjusting the particle size is located, It may include a powder casing detachably coupled to the lower portion of the grinder casing and the ground powder is stored therein.

It will be appreciated that the coupling structure of the grinder casing and the powder casing can be variously modified using a known detachable coupling structure such as screw coupling, bolt coupling, and fitting coupling.

That is, the grinder casing may be selectively combined with the powder casing, and the powder casing may be used as a storage container for storing the ground powder by being combined with another lid part (not shown) in the same coupling structure with the grinder casing. Let's find out.

On the inner surface of the bean storage casing 100 in the discharge space to store the ground powder discharged to the outside of the first bean grinding blade unit 110 and the second bean grinding blade unit 200 to the powder storage unit 400 A guiding discharge guide member is located.

The discharge guide member is positioned to protrude downward from the inner surface of the bean storage casing part 100 so that the bean powder discharged to the outside of the first bean grinding blade part 110 and the second bean grinding blade part 200 passes through. The coffee beans are guided through the slits 211a to be stored in the powder storage unit 400 located below.

The beans stored in the coffee bean storage casing part 100 are introduced into the coffee bean discharge part 100a through the guide hopper part 100b, and pass through the coffee bean discharge part 100a to allow the first coffee bean grinding blade part 110 and the second to be ground. Located between the ground grinding blade unit 200, and is ground by the rotation of the second ground grinding blade unit 200 between the first ground grinding blade unit 110 and the second ground grinding blade unit 200.

Then, the ground powder ground between the first ground mill blade 110 and the second ground mill blade 200 is ground the first beans by centrifugal force and the first guide blade portion 112a and the second guide blade portion 200a. Moving to the outside of the blade unit 110 and the second ground mill blade 200 is discharged to the outside of the first ground mill blade 110 and the second ground mill blade 200.

Since the interval between the first guide blade portion 112a and the second guide blade portion 200a is gradually formed toward the outside of the first bean grinding blade portion 110 and the second bean grinding blade portion 200, the first bean grinding blade portion ( As the outer side of the 110 and the second ground grinding blade portion 200, the particles of the ground powder is formed smaller and is set by the interval between the outer surface of the first ground grinding blade portion 110 and the second ground grinding blade portion 200 The ground powder ground to a particle size is discharged to the outside of the first ground mill blade 110 and the second ground mill blade 200.

On the other hand, the final particle size of the ground coffee powder ground to the ground grinding blade 200, the minimum spacing of the first ground grinding blade 110 and the second ground grinding blade 200, that is, outside the first ground grinding blade 110 It may be determined by the interval between the side and the outer surface of the second ground grinding blade unit 200.

Coffee bean grinder device according to the present invention by moving up and down at least one side of the first bean grinding blade portion 110 and the second bean grinding blade portion 200 to the elevating portion 300 for adjusting the particle size to ground the first beans The gap between the blade unit 110 and the second ground mill blade 200 is adjusted.

The first ground bean grinding blade unit 110 is moved up and down while the outer circumferential surface is supported on the inner circumferential surface of the coffee bean storage casing part 100 to determine the particle size of the ground coffee powder and the second bean grinding blade 110. The minimum spacing of the grinding blade unit 200, that is, the outer surface of the first ground grinding blade unit 110 and the outer surface of the second ground grinding blade unit 200 may be adjusted.

One embodiment of the coffee bean grinder device according to the present invention, the elevating unit 300 for adjusting the particle size is raised and lowered by the first bean grinding blade 110, the first bean grinding blade 110 and the second bean grinding blade 200 For example, adjusting the minimum interval of).

The first elevating guide protrusion 113 protrudes from the outer circumferential surface of the first ground grinding blade unit 110, and the first elevating guide protrusion 113 is elongated in the up and down directions on the inner circumferential surface of the bean storage casing 100. The first elevating guide slit 121 is inserted and moved.

The lifting unit 300 for adjusting the particle size is rotatably positioned in the first lifting guide slit 121 of the coffee bean storage casing 100 and is screwed through the first lifting guide protrusion 113. The blade lifting and lowering screw 340, the grinding blade lifting screw 340 may include a rotary blade lifting and lowering motor 350 for rotating.

In addition, the elevating portion 300 for adjusting the particle size is the second elevating guide projection 114, which is positioned apart from the first elevating guide projection 113 in the circumferential direction on the outer circumferential surface of the first ground grinding blade unit 110, beans The second lifting guide slit 122 further includes a second lifting guide slit 122 which is positioned on the inner circumferential surface of the storage casing 100 in the up and down direction and is movably inserted into the second lifting guide protrusion 114.

In addition, the elevating unit 300 for adjusting the particle size is positioned upright in the second elevating guide slit 122 and further includes an elevating guide bar member 360 positioned through the second elevating guide protrusion 114. It may include.

The second elevating guide protrusion 114, the second elevating guide slit 122, and the elevating guide rod member 360 may be provided in plural to move the lower panel member up and down in a stable vertical direction. Make sure

In addition, it is an example that the ball bearing 115, which is rolled in contact with the inner circumferential surface of the bean storage casing part 100, is inserted into and positioned on the outer circumferential surface of the first ground coffee grinding blade unit 110.

The first bean grinding blade unit 110 can be moved up and down stably and smoothly as the ball bearing 115 rolls in contact with the inner circumferential surface of the bean storage casing part 100 during up and down movement.

The first ground grinding blade unit 110 is moved up and down in accordance with the rotation direction of the screw 340 for lifting and lowering the grinding blade to determine the grain size of the ground coffee powder 110 and the second ground grinding blade ( That is, the minimum spacing of 200 may be adjusted so that the outer surface of the first ground grinding blade unit 110 and the outer surface of the second ground grinding blade unit 200 may be adjusted.

The grinding blade lifting and lowering motor 350 is an example of a step motor.

The actual size of the beans, that is, the particle size control of the beans according to the classification of the beans according to the roasting degree of the beans should be fine and precise control within a narrow range, accordingly, the first ground mill blade 110 and the second ground mill blade In order to adjust the spacing of the 200, the screw is rotated by a motor and a linear movement is adopted, and the motor is also limited to the step motor.

On the other hand, the coffee beans grinder device according to the present invention detects the chromaticity of the beans stored in the bean storage casing unit 100 to the chromaticity information 500, the color information of the beans received from the colorimeter 500 to detect the type of beans It may further include a control unit 600 for controlling the operation of the elevating unit 300 for adjusting the particle size.

It is noted that the colorimeter 500 may be variously implemented with a known coffee colorimeter 500 for measuring the chromaticity of coffee beans.

The control unit 600 receives the chromaticity information of the beans stored in the bean storage casing unit 100 from the colorimeter 500 and adjusts the particle size so that the beans can be ground with a particle size preset to the type of beans having the corresponding chromaticity. Control the operation of the lifting unit 300.

Coffee beans can be divided into 8 kinds by SCAA according to roasting power or 8 kinds by Japanese 8-stage classification.

The weaker the roasting degree, the brighter the chromaticity of the beans. The stronger the roasting degree, the darker the chromaticity of the beans.

The classification by the SCAA and the eight-stage classification in Japanese style are well-known classification methods for classifying the types of beans through distribution, and further description thereof is omitted.

As the degree of roasting decreases, the degree of grinding of the beans increases, that is, the particle size of the coffee beans decreases. As the degree of roasting increases, the degree of grinding of the beans decreases, that is, the grain size of the beans increases.

That is, the control unit 600 is pre-stored in the sorting method according to the SCAA or 8-stage classification method according to the chromaticity of the beans according to the chromaticity of the beans.

In addition, the controller 600 determines the type of coffee beans based on the information transmitted from the colorimeter 500, and controls the operation of the raising / lowering unit 300 for adjusting the particle size so that the first coffee beans may be ground to a grinding degree suitable for the determined coffee beans. Set the interval between the 110 and the second ground grinding blade unit 200, and rotates the ground grinding blade unit.

Meanwhile, the coffee bean grinder device according to the present invention may further include a temperature sensor unit 700 for measuring temperature and a humidity sensor unit 800 for measuring humidity.

The temperature sensor unit 700 and the humidity sensor unit 800 are electrically connected to the controller 600, respectively, and provide temperature and humidity information in the bean storage casing unit 100 to the controller 600.

The humidity sensor 800 measures the humidity in the coffee bean storage casing 100, and the temperature sensor 700 extracts coffee, that is, pours hot water into the coffee beans to extract the ambient temperature of the coffee extracting part. Detect.

The control unit 600 receives the temperature information and the humidity information through the temperature sensor unit 700 and the humidity sensor unit 800, according to the temperature information and humidity information, the first ground mill blade 110 and the second ground mill blade ( 200) Correct the gap at the preset value to correct the grain size of the coffee beans.

If the humidity is high, the moisture in the air is high and the coffee beans themselves absorb water, so it becomes elastic like rubber due to the plasticizing effect.

In addition, when the humidity is low, the dried and dried beans are less moisture, which means that the dried beans are underextracted due to their low resistance to water, so in order to solve this problem, the size of the ground powder should be made smaller.

In addition, when the temperature rises, the gas of the ground bean powder evaporates faster, thereby reducing the gas, and when the gas that resists the flow of water during espresso extraction is reduced, the extraction speed naturally increases.

When the temperature rises in the reference temperature range, the particle size of the coffee beans is reduced, and when the temperature is low in the reference temperature range, the particle size of the coffee beans is increased to maintain the extraction speed.

Table 1 below is an example of setting the grinding degree according to the type of beans, temperature, humidity conditions classified by the classification method by SCAA.

In Table 1 below, the grinding degree is divided into 1 to 10 based on the particle size of the ground powder to be ground, and the minimum reference particle size is 10 and the maximum reference particle size is 1 as an example of dividing into 10 steps.

The control unit 600 of the first beans ground blade 110 and the second beans ground blade 200 in order to be ground to the corresponding grinding powder in the type of coffee beans and the reference temperature range and the reference humidity range in Table 1 below Adjusting the interval is an example.

Since the numerical value for the specific minimum reference particle size and the maximum reference particle size may be set differently according to the production site of the coffee beans and the coffee tree, etc., more detailed description will be omitted.

 Chromaticity criteria Electrical conductivity Standard distribution range Standard temperature range Standard Humidity Range Grinding degree First Drug Distribution Very light 95/75 # 95 ± 5 20 ℃ ~ 30 ℃ 40%-60% 9.4 Second Medicine Distribution Light 85/67 # 85 ± 5 20 ℃ ~ 30 ℃ 40%-60% 9.3 First Medium Distribution Moderately Light 75/59 # 75 ± 5 20 ℃ ~ 30 ℃ 40%-60% 9.2 Second heavy distribution Light medium 65/51 # 65 ± 5 20 ℃ ~ 30 ℃ 40%-60% 9.1 First Medium Power Distribution  Medium 55/43 # 55 ± 5 20 ℃ ~ 30 ℃ 40%-60% 9 Second Medium Steel Distribution Moderately Dark 45/35 # 45 ± 5 20 ℃ ~ 30 ℃ 40%-60% 8.9 First Power Distribution  Dark 35/27 # 35 ± 5 20 ℃ ~ 30 ℃ 40%-60% 8.8 Second Power Distribution Very dark 25/19 # 25 ± 5 20 ℃ ~ 30 ℃ 40%-60% 8.7

Referring to Table 1, the beans of the first weak roast are ground to a grinding degree of 9.4 in the reference temperature range of 20 ° C. to 30 ° C. and the reference humidity range, and the beans of the second weak roast are 20 ° C. to 30 ° C. and the reference temperature range. In the standard humidity range, the coffee beans are ground to 9.3, the first medium roasted beans are ground at a temperature range of 20 ° C. to 30 ° C. and the standard humidity range is 9.2, and the second medium roasted beans are ground at a temperature range of 20 ° C. The grinding medium is ground at a grinding degree of 9.1 at ~ 30 ° C and a standard humidity range, and the beans of the first medium steel roasting are ground at a grinding degree 9 in the standard temperature range of 20 ° C to 30 ° C and the standard humidity range, and the beans of the second medium steel roasting are In the reference temperature range of 20 ℃ ~ 30 ℃ and the standard humidity range of the grinding degree 8.9, the coffee beans of the first steel roasting is ground to a grinding degree 8.8 in the reference temperature range of 20 ℃ ~ 30 ℃ and the standard humidity range, The beans of the roasting are ground to a grinding degree of 8.7 in the standard temperature range of 20 ℃ ~ 30 ℃ and the standard humidity range. All.

Referring to Table 1, it can be seen that the grain size of the ground coffee is gradually increased as the grinding degree is gradually lowered from the low distribution degree to the strong distribution degree.

That is, in the control unit 600, the interval between the first bean grinding blade unit 110 and the second bean grinding blade unit 200 is preset according to a preset grinding degree, and the control unit 600 includes a colorimeter 500 and a temperature sensor. Part 700, through the information received through the humidity sensing unit to ground the first ground mill blade 110 and the second ground mill blade 200 to grind the beans to the particle size corresponding to the degree of grinding of the beans. Adjust

More specifically, the control unit 600 when the temperature received from the temperature sensor unit 700 is lower than the reference temperature range 20 ℃ ~ 30 ℃ lower the grinding degree by a predetermined temperature correction value to increase the grain size of the ground powder If the received temperature is higher than the standard temperature range of 20 ℃ ~ 30 ℃, increase the grinding degree by the preset temperature correction value and reduce the particle size of the ground powder.

When the humidity transmitted from the humidity sensor unit 800 is lower than 40% to 60% of the reference humidity range, the controller 600 increases the grinding degree by a predetermined humidity correction value to reduce the particle size of the ground powder, and transmit the same. If the received humidity is higher than the standard humidity range of 40% to 60%, lower the grinding degree by the preset humidity correction value to increase the grain size of the ground powder.

In the example in which the grinding degree is divided into 10 stages, the preset temperature correction value and the humidity correction value are 0.1, for example, and may be differently performed according to the step of classifying the grinding degree and the place of production of coffee beans and coffee tree species. Let's find out.

In addition, the controller 600 may further include a reference particle size input unit capable of inputting a minimum reference particle size and a maximum reference particle size.

The input unit may be configured to input a minimum reference particle size and a maximum reference particle size including a numeric key switch unit and a mode switch unit, or a keypad screen for inputting a minimum reference particle size and a maximum reference particle size on a touch screen panel. It will be appreciated that the present invention may be modified in various ways using known input means.

The reference particle size input unit allows the user to input the minimum reference particle size and the maximum reference particle size to adjust the particle size of the coffee beans according to the user's taste and know-how.

In other words, by setting the minimum reference particle size and the maximum reference particle size for the coffee beans, the varistor user can adjust the flavor and taste of the coffee beans according to the taste and know-how of the coffee beans. You can do it.

On the other hand, Figure 3 is a schematic diagram showing another embodiment of a coffee bean grinder device according to the present invention, Figure 4 is a coffee beans grinder device according to the present invention showing an embodiment of the lifting unit 300 for adjusting the particle size Exploded perspective view.

3 and 4, another embodiment of the coffee bean grinder device according to the present invention will be described in detail below. Another embodiment of the coffee bean grinder device according to the present invention is an embodiment of grinding a coffee bean into a conical cutter type. Let's say yes.

The coffee bean discharging part 100a of the first coffee grinder blade 110 has an outlet shape through which upper and lower parts penetrate, and has an inclined cone shape such that its inner circumferential surface gradually increases toward the lower end thereof, and the second coffee grinder grinding part ( 200 has a cone shape of which diameter decreases toward the upper side, and the inner circumferential surface and the outer circumferential surface of the bean discharge part 100a are spaced apart from each other.

On the other hand, the final grain size of the ground coffee powder ground to the first ground mill blade 110 and the second ground mill blade 200, the coffee beans discharge portion 100a and the coffee beans discharge portion located in the first ground coffee beans 110 It may be determined by the minimum interval of the second ground grinding blade portion 200 that is located within (100a), that is, the interval between the lower end of the coffee beans discharge portion (100a) and the second ground grinding blade portion (200).

Another embodiment of the coffee bean grinder device according to the present invention is to move the second ground grinding blade 200, up and down to form a cone-shaped second bean grinding blade 200 and a cone-shaped coffee beans so as to have a different angle of inclination The gap between the portions 100a is adjusted.

The guide hopper portion 100b smoothly guides the beans in the storage space to the upper side inlet of the bean discharge portion 100a through an upper side open portion that is wider than the lower outlet which discharges the bean to the bean discharge portion 100a. Done.

The second ground bean grinding blade portion 200 has a cone shape that decreases in diameter toward the upper side, and the inner circumferential surface and the outer circumferential surface of the bean discharge portion 100a are spaced apart from each other.

The inclination angle of the inner circumferential surface of the bean discharge part 100a having the cone shape and the inclination angle of the outer circumferential surface of the second bean grinding blade part 200 having the cone shape have different inclination angles, and the interval increases gradually toward the upper side, As an example, the gap is narrowest at the lower end side of 100a).

Then, the inclination angle of the inner peripheral surface of the bean discharge unit 100a has an inclination angle greater than the outer peripheral surface inclination angle of the second ground grinding blade unit 200 so that the interval increases gradually toward the upper side, and at the lower end side of the bean discharge unit 100a. For example, the narrowest interval is used.

The coffee beans are easily inserted between the coffee bean discharging part 100a and the second coffee grinder blade part 200 at the upper end side of the coffee bean discharging part 100a to be ground by the second coffee grinder blade part 200 to be ground. This is to ensure smooth discharge of the coffee beans to the lower part of the

A powder storage unit 400 in which pulverized bean powder may be stored is positioned below the bean discharge unit 100a.

That is, the ground coffee powder which is pulverized in the coffee bean discharge part 100a by the rotation of the second coffee grinder blade 200 and discharged to the lower side of the coffee bean discharge part 100a is dropped and stored in the powder storage part 400.

On the other hand, the final particle size of the ground powder to be crushed by the second bean grinding blade portion 200 is the minimum distance between the bean discharge portion (100a) and the second bean grinding blade portion 200, that is, the lower end of the bean discharge portion (100a) and the It may be determined by the interval between the two beans grinding blade portion 200.

Coffee bean grinder device according to the present invention by moving up and down at least one side of the bean storage casing 100 and the second ground grinding blade 200 to the elevating unit 300 for adjusting the particle size to different angles of inclination It is to adjust the interval between the cone-shaped second bean grinding blade portion 200 and the cone-shaped bean discharge portion (100a) formed to have.

Rotating grinding motor 210 for the ground is mounted on the upper side of the bean storage casing 100, the main shaft 220 of the motor is vertically positioned and connected to the second ground grinding blade 200 For example, rotating the second bean grinding blade unit 200.

In addition, the elevating unit 300 for adjusting the particle size is rotated by the elevating rotary motor unit 310 and the elevating rotary motor unit 310 mounted on the main shaft portion 220 of the ground mill rotating motor unit 210. The lifting screw 320, the lifting screw 320 is screwed into the inside and the movable shaft portion is coupled to the main shaft portion 220 so as to be movable and the second ground mill blade 200 is connected to the end side ( 330).

In addition, a plurality of locking protrusions 331 protrude from any one of an outer circumferential surface of the movable shaft portion 330 and an inner circumferential surface of the main shaft portion 220, and the outer circumferential surface of the movable shaft portion 330 and the main shaft portion 220 are formed. On the other side of the inner circumferential surface, the movement guide slit portion 332, which is positioned by being inserted in such a manner as to be linearly movable, is positioned long in the longitudinal direction.

The moving shaft part 330 has a locking protrusion 331 inserted into the moving guide slit part 332 and locked in the rotational direction, thereby limiting rotation, thereby preventing the rotating shaft 330 from being rotated by the lifting and lowering screw 320. 320 is moved in the longitudinal direction.

The moving shaft portion 330 moves in the direction of increasing length along the rotational direction of the elevating screw 320, that is, while lowering, increasing the distance between the second ground mill blade 200 and the bean discharge portion 100a. The distance between the second ground bean grinding blade portion 200 and the bean discharge portion 100a may be widened while moving in the direction of shortening of the length.

In addition, the lifting and lowering rotary motor unit 310 is an example of a step motor.

The actual size of the beans, that is, the grain size of the beans according to the classification of the beans according to the roasting degree of the coffee beans must be finely and precisely adjusted within a narrow range, and accordingly, the motor for controlling the spacing of the second ground mill blade 200 is adjusted. It adopts the structure to move linearly by rotating the screw, and the motor is also limited to the step motor.

5 is a flow chart showing an embodiment of a coffee bean grinding method according to the present invention, referring to Figures 1, 3 and 5 coffee beans grinding method according to the present invention check the type of beans to check the type of beans Step (S100), may include a coffee beans grinding step (S200) for grinding the beans to a particle size corresponding to the identified beans.

In the ground grinding step, the ground coffee beans, which are located between the first ground mill blade 110 and the second ground mill blade 200, are ground by the rotation of the second ground mill blade 200, and the first ground mill blade 110 is disposed. 1) and any one side of the second ground grinding blade unit 200 by moving up and down to adjust the distance between the first ground grinding blade unit 110 and the second ground grinding blade unit 200, the particles corresponding to the identified types of beans You can grind beans to size.

In more detail, an embodiment of the ground coffee grinding step is to rotate the second grinding blade in a flat type cutter including a first bean grinding blade portion 110 and a second bean grinding blade portion 200 having a disc shape and grinding the first beans. The blade 110 is moved up and down to adjust the interval between the first ground mill blade 110 and the second ground mill blade 200, and ground the beans to the particle size corresponding to the identified beans.

In another embodiment, the ground coffee grinding step is located in the cone-shaped coffee bean discharge part 100a, and has a cone-shaped second coffee bean grinding part 200 having an inclination angle different from that of the coffee bean discharge part 100a. The coffee beans may be ground to a particle size corresponding to the identified types of coffee beans by moving the second coffee beans grinding part 200 and the coffee beans discharge part 100a of the first coffee beans grinding part 110.

The bean type checking step (S100) may include a chromaticity sorting process (S110) of dividing the types of coffee beans into chromaticity through the colorimeter 500.

The chromaticity of the coffee beans is divided according to the roasting degree, and the classification of the types of beans according to the roasting degree is illustrated in Table 1 above, and it is noted that the detailed description is omitted.

In addition, the bean type checking step (S100) is a process of checking whether the temperature and humidity are each a predetermined reference range after the chromaticity classification process (S110), and when one of the temperature and the humidity is not the predetermined reference range, the corresponding type. It may include the step of correcting the predetermined reference grinding degree for the beans of the grinding degree (S130).

And, the step of grinding the beans (S200) is a step of grinding the beans with a predetermined reference grinding for the beans of the type when the temperature and humidity are each a predetermined reference range (S210), grinding the beans with the corrected grinding ( S220) may be included.

The process of checking whether the temperature and the humidity are respectively preset reference ranges (S120) is to determine whether the humidity is the preset reference range by receiving the humidity measured in the bean storage casing unit 100 in which the beans are stored, and extracting coffee. That is, the hot water is poured into the coffee beans to receive the ambient temperature of the coffee extracting unit to extract the coffee to check whether the temperature is a preset reference range.

The preset reference range of temperature is 20 ° C ~ 30 ° C, the preset reference range of humidity is 40% to 60% as an example.

When the temperature is lower than the reference temperature range, the process of correcting the corrected grinding degree (S240) increases the particle size of the ground powder by lowering the grinding degree by a preset temperature correction value, and when the received temperature is higher than the reference temperature range, the grinding degree. Increase the value by the preset temperature correction value to reduce the grain size of the coffee beans.

In addition, when the humidity is lower than the standard humidity range, the process of correcting the corrected grinding degree (S130) increases the grinding degree by a predetermined humidity correction value to reduce the particle size of the coffee beans, and when the received humidity is higher than the standard humidity range. The grinding degree is lowered by a predetermined humidity correction value to reduce the grain size of the coffee beans.

The preset temperature correction value and the humidity correction value are set to 0.1 when the grinding degree according to the types of beans classified by the SCAA is set to at least 1 to 10, as an example, and an embodiment thereof has been described above. It is to be noted that the duplicate description is omitted.

If the humidity is high, the moisture in the air is high and the coffee beans themselves absorb water, so it becomes elastic like rubber due to the plasticizing effect.

In addition, when the humidity is low, the dried and dried beans are less moisture, which means that the dried beans are underextracted due to their low resistance to water, so in order to solve this problem, the size of the ground powder should be made smaller.

In addition, when the temperature rises, the gas of the ground bean powder evaporates faster, thereby reducing the gas, and when the gas that resists the flow of water during espresso extraction is reduced, the extraction speed naturally increases.

When the temperature rises in the reference temperature range, the particle size of the coffee beans is reduced, and when the temperature is low in the reference temperature range, the particle size of the coffee beans is increased to maintain the extraction speed.

In addition, the coffee beans grinding method according to the present invention further includes a minimum maximum reference particle size input step (S90) of inputting the minimum reference particle size of the beans and the maximum reference particle size of the beans prior to the bean type check step (S100). Can be.

Minimum maximum reference particle size input step (S90) is to input the minimum reference particle size and the maximum reference particle size to finely control the predetermined particle size for each type of beans.

That is, the grinding step (S200) grinds the beans of the type with the grinding set by the machine based on the minimum reference particle size and the maximum reference particle size, the input step of the minimum maximum reference particle size is the minimum reference particle size and the maximum reference particle size By inputting, you can adjust the preset grinding degree for each type of beans.

By setting the minimum standard particle size and maximum standard particle size for the beans, the user can adjust the flavor and taste of the beans according to the taste and know-how of the varistors, so that each coffee shop can produce unique coffee. You can do that.

The present invention maximizes the flavor and taste of the beans by automatically adjusting the particle size of the ground powder to be ground in accordance with the classification of beans.

In addition, the present invention detects the classification of beans and automatically adjusts the particle size according to the type of beans, greatly improves the convenience of use, and can be produced coffee beans of uniform quality.

In particular, the present invention detects the environmental conditions in which the beans are stored and accordingly adjusts the grain size of the beans to provide the coffee beans having a uniform flavor and taste at the time of purchase related to the external environmental conditions in the coffee beans vending machine at the time of purchase Significantly improve your satisfaction.

The present invention is not limited to the above-described embodiments, but can be modified and practiced in various ways without departing from the spirit of the present invention, which is understood to be included in the configuration of the present invention.

100: bean storage casing 100a: bean discharge part
100b: guide hopper portion 110: the first ground mill blade
111: bean support member 112: first ground mill member
112a: first guide blade 113: first lifting guide projection
114: second lowering guide projection 115: ball bearing
120: casing body member 121: first lifting guide slit
122: second ascent guide slit
200: second ground grinding blade 200a: second guide blade
210: rotating motor part for grinding beans 220: main shaft part
300: lifting unit for adjusting the particle size 310: rotating motor unit for lifting
320: screw for raising and lowering 330: moving shaft portion
331: locking projection 332: slit portion for the movement guide
340: grinding blade lifting and lowering screw
350: rotary motor for lifting and lowering the grinding blade
360: elevating guide rod member 400: powder storage unit
500: colorimeter 600: control unit
700: temperature sensor unit 800: humidity sensor unit

Claims (16)

A bean storage casing unit in which a storage space in which beans may be stored is located;
A first ground mill blade located in the coffee bean storage casing and having a coffee bean discharge part through which coffee beans can pass;
A second bean grinding blade portion positioned to be spaced apart from the first bean grinding blade portion to grind the beans;
A rising and lowering part for adjusting the particle size of the first bean grinding blade and the second bean grinding blade to move up and down to adjust the distance between the first bean grinding blade and the second bean grinding blade;
A colorimeter for detecting the type of beans by detecting the chromaticity of the beans stored in the bean storage casing;
A temperature sensor unit which detects an ambient temperature of the coffee extraction unit for pouring coffee by pouring hot water into the ground powder; And
And a control unit controlling the operation of the elevating unit for adjusting the particle size with the chromaticity information of the beans received from the colorimeter and the temperature information received from the temperature sensor unit.
The controller crushes the smaller the grain size of the beans as the color of the beans detected by the colorimeter is brighter, and the larger the grain size of the beans as the chromaticity of the beans detected by the colorimeter is darker.
When the temperature information is lower than the reference temperature range, the grinding degree of the beans is lowered by a preset temperature correction value to increase the particle size of the ground coffee powder, and when the temperature information is higher than the reference temperature range, the grinding degree is set to the preset temperature. A coffee bean grinder device, characterized in that the grain size of the ground coffee powder is increased by a correction value to make it smaller. The method according to claim 1,
On the lower surface of the first bean grinding blade portion is located the first guide blade portion of the shape that is larger in the lower side,
On the upper surface of the second bean grinding blade portion is located a second guide blade of the form gradually increasing in diameter to the upper side,
The lower part of the second ground grinding blade portion is a rotary motor for grinding ground beans,
The second ground coffee ground grinder is rotated by the ground mill rotating motor portion to ground the coffee beans grinder, characterized in that for crushing the coffee beans located between the first ground coffee beans. delete delete delete delete The method according to claim 1,
Further comprising a humidity sensor unit for measuring the humidity to transfer the humidity information to the control unit,
The controller is a coffee bean grinder device, characterized in that for grinding the ground by correcting the interval between the first ground mill blade and the second ground mill blade in accordance with the humidity information at a predetermined value. The method according to claim 7,
The humidity sensor unit is a coffee beans grinder, characterized in that for detecting the humidity in the coffee beans storage casing unit. The method according to claim 8,
The control unit increases the grinding degree by a predetermined humidity correction value when the humidity information is lower than the reference humidity range, and decreases the particle size of the ground powder to be ground. When the humidity information is higher than the reference humidity range, the controller sets the grinding degree by the preset humidity. A coffee bean grinder device, characterized by lowering the correction value to increase the grain size of the coffee beans. The method according to claim 1,
The control unit is set to the minimum reference particle size and the maximum reference particle size as a reference for the degree of grinding and grinding degree to correspond to a plurality of types of beans divided according to the roasting degree of the beans,
The control unit further comprises a reference particle size input unit for inputting the minimum reference particle size and the maximum reference particle size. The method according to claim 1,
The first elevating guide projection is projected on the outer circumferential surface of the first ground grinding blade portion, the first elevating guide slit portion is inserted into the inner circumferential surface of the bean storage casing portion in a long upward and downward direction to be moved. Location,
The elevating unit for adjusting the particle size,
A panel elevating screw member rotatably positioned within the first elevating guide slit portion of the coffee bean storage casing portion and screwed through the first elevating guide protrusion; And
Coffee beans grinder device comprising a panel lifting rotary motor for rotating the panel lifting screw member. The method according to claim 11,
The elevating unit for adjusting the particle size,
A second elevating guide protrusion located on the outer circumferential surface of the first ground coffee grinding blade and spaced apart from the first elevating guide protrusion in the circumferential direction;
A second raising and lowering guide slit part which is positioned on the inner circumferential surface of the bean storage casing and is elongated in the up and down direction and is movably inserted into the second raising and lowering guide protrusion; And
The coffee beans grinder device further comprises a lifting guide bar member which is positioned in the second lifting guide slit and positioned to penetrate the second lifting guide protrusion. The method according to claim 11,
Coffee bean grinder device, characterized in that the ball bearing rolling in contact with the inner peripheral surface of the bean storage casing portion is inserted into the outer peripheral surface of the first bean grinding blade portion. The method according to claim 1,
The coffee bean discharge part has a top and bottom through the discharge port shape, the inner peripheral surface has a cone shape inclined so that the inner diameter gradually increases toward the lower end,
The second bean grinding blade portion has a cone shape inclined so that the outer diameter gradually increases toward the lower end portion,
The inclination angle of the inner circumferential surface of the coffee bean discharging part and the inclination angle of the outer circumferential surface of the second coffee bean grinding blade have different inclination angles and gradually increase toward the upper side, and the gap is narrowest at the lower end side of the coffee bean discharging part. Bean grinder device. The method according to claim 14,
The second bean grinding blade portion is rotated by a rotary motor for grinding beans mounted on the upper side of the bean storage casing portion to grind the beans,
The elevating unit for adjusting the particle size,
A lifting and lowering rotary motor unit mounted to the main shaft of the ground mill rotating motor unit;
A lifting screw which is rotated by the lifting rotary motor unit; And
The coffee bean grinder device, characterized in that the lifting screw is screwed into the inside and movably coupled to the main shaft portion and the second shaft grinding blade connected to the end side. The method according to claim 15,
A plurality of locking projections protrude on either one of an outer circumferential surface of the movable shaft portion and an inner circumferential surface of the main shaft portion, and the locking protrusion is positioned on the other side of an outer circumferential surface of the movable shaft portion and the inner circumferential surface of the main shaft portion to be linearly inserted. Coffee bean grinder device, characterized in that the movement guide slit portion is located long in the longitudinal direction.

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