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Title:
COFFEE DISPENSING MACHINE TO STABLY AND UNIFORMLY DISPENSE COFFEE POWDER
Document Type and Number:
WIPO Patent Application WO/2021/111161
Kind Code:
A1
Abstract:
A coffee dispensing machine is described, to dispense and press coffee in a filter-holder, comprising: a dispenser (10) having a rod (12) and a dispensing element (14) on an end of the rod (12), wherein the dispensing element (14) has a propeller structure; a first regulator (20) connected to the rod (12) of the dispenser (10) to be rotated with respect to the dispensing element (14); and a second regulator (30) connected to the rod (12) of the dispenser (10) to be rotated with respect to the dispensing element (14), wherein the second regulator (30) is between the dispensing element (14) and the first regulator (20), and the second regulator (20) comprises a through-hole so that the rod (12) passes through it; wherein the dispenser (10) is capable of rotating to regulate the relative position to the second regulator (30) when the first regulator (20) is separated from the second regulator (30), and the dispenser (10) is kept when the first regulator (20) moves to touch the second regulator (30); the dispenser (10) further comprises vibrating means (72, 73) configured to produce a vibration when dispensing the coffee powder, in order to optimally dispense it.

Inventors:
SESTIC SASA (AU)
Application Number:
PCT/IB2019/001217
Publication Date:
June 10, 2021
Filing Date:
December 05, 2019
Export Citation:
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Assignee:
ONACOFFEE WHOLESALE CANBERRA PTY LTD (AU)
International Classes:
A47J31/06; A47J31/44
Foreign References:
AU2017245364B22018-11-15
KR101756121B12017-07-10
KR101710100B12017-02-24
KR101827144B12018-02-07
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Claims:
CLAIMS

1. Coffee dispensing machine to dispense and press coffee in a filter-holder, comprising: a dispenser (10) having a rod (12) and a dispensing element (14) on an end of the rod (12), wherein the dispensing element (14) has a propeller structure; a first regulator (20) connected to the rod (12) of the dispenser (10) to be rotated with respect to the dispensing element (14); and a second regulator (30) connected to the rod (12) of the dispenser (10) to be rotated with respect to the dispensing element (14), wherein the second regulator (30) is between the dispensing element (14) and the first regulator (20), and the second regulator (20) comprises a through-hole so that the rod (12) passes through it; wherein the dispenser (10) is capable of rotating to regulate the relative position to the second regulator (30) when the first regulator (20) is separated from the second regulator (30), and the dispenser (10) is kept unmoving when the first regulator (20) moves to touch the second regulator (30), characterized in that it further comprises vibrating means (72, 73) configured to produce a vibration when dispensing the coffee powder, in order to optimally dispense it.

2. Coffee dispensing machine according to claim 1, characterized in that it comprises a supply unit (51) and an electronic control unit (59) comprises: a plurality of sensors configured to detect speed and/or number of revolutions of the coffee dispensing machine, and the force applied when using the coffee dispensing machine in order to control the operating mode of a user and the vibration of the vibrating means of the machine; a microprocessor, programmable to control the operation of the machine depending on data detected through said plurality of sensors; storing means to store data read by sensors, programs and operating mode; wireless connecting means configured to connect the coffee dispensing machine to an evaluating and learning system in order to exchange data therewith.

3. Coffee dispensing machine according to claim 1 or 2, characterized in that the rod (12) is internally hollow and comprises a threaded section (18) on its external surface, the first regulator (20) comprises a ring nut (22), comprising a threading (23) obtained on its internal surface, inside which a hollow shaft (62) is obtained, and the second regulator (30) comprises a through-hole (32), on the side wall of which a threaded section (34) is provided.

4. Coffee dispensing machine according to any one of the previous claims, characterized in that the rod (12) of the dispenser (10) passes through the through-hole (32) of the second regulator (30) and then the threaded section (18) of the rod (12) is screwed in the threading (23) of the ring nut (22), while the threaded section (18) of the rod (12) engages both the threaded section (34) of the second regulator (30) and the threading (23) of the ring nut (22) of the first regulator (20), and in that the second regulator (30) comprises a recess (36) on one of its sides which is in front of the dispensing element (14) of the dispenser (10).

5. Coffee dispensing machine according to any one of the previous claims, characterized in that the hollow shaft (62) of the first regulator (20) comprises a seat (65) which contains the vibrating means (72, 73).

6. Coffee dispensing machine according to claim 1, characterized in that the second regulator (30) has a recess, and the dispensing element (14) of the dispenser (10) enters or leaves the recess when the first regulator

(20) moves with respect to the second regulator (30).

7. Coffee dispensing machine according to any one of the previous claims, characterized in that the propeller structure (16) has a plurality of ribs (40, 40a) and a plurality of curved surfaces between each of two nearby ribs (40, 40a) respectively, each of the curved surfaces has a first curved portion (44) with a side connected to the rib and a second curved portion (46) with a side connected to the first curved portion (44), and a third curved portion (48) with opposite sides connected to the second curved portion (46) and to the other rib.

8. Coffee dispensing machine according to claim 7, characterized in that the curvature radius of the first curved portion (44) is greater than the curvature radius of the second curved portion (46), and the curvature radius of the second curved portion (46) is greater than the curvature radius of the third curved portion (48).

9. Coffee dispensing machine according to any one of claims 1 to 6, characterized in that the propeller structure (16) of the dispensing element (14) comprises a dispensing surface (116) comprising a plurality of ridges (140, 140a) and a plurality of plane surfaces (142) arranged between adjacent ridges (140, 140a), and characterized in that every plane surface (142) comprises a first portion (144) and a second portion (145), wherein a side of the first portion (144) is connected to the second portion (145) in order to form the ridge (140, 140a) and the other side is connected to another second portion (145) to form a valley of the plane surface (142).

10. Coffee dispensing machine according to claim 9, characterized in that the other side is connected to another second portion (145) through a radial portion (146).

11. Coffee dispensing machine according to claim 9 or 10, characterized in that the first portion (144) and the second portion (145) are symmetrical with respect to the ridge (140, 140a) and with respect to the radial portion (146). 12. Coffee dispensing machine according to any one of claims

9 to 11, characterized in that the dispensing surface (116) has a circular edge and the ridges (140, 140a) are radial.

13. Coffee dispensing machine according to any one of the previous claims, characterized in that the dispensing element (14) is coated with Diamond Like Carbon, DLC.

Description:
COFFEE DISPENSING MACHINE TO STABLY AND UNIFORMLY DISPENSE COFFEE POWDER

The present invention relates to a device for producing coffee, more in particular to a coffee dispensing machine to stably and uniformly dispense coffee powder. Dispensing of coffee powder has a very strong effect on the espresso aroma. Under a condition of non-uniform dispensino of of coffee powder or coffee powder non correctly pressed, the espresso aroma will be inconsistent. Therefore, every barista will make coffee with a different aroma even if he uses the same coffee machine.

Typically, a conventional coffee dispensing machine has a stirring device, a rectilinear rib for example, to rotate to make the coffee powder in a container with a plane surface. The conventional coffee dispensing machine only flattens the surface of the coffee powder. However, while the coffee powder initially has no dispensino from the container, flattening of the surface only creates a small help in preparing coffee. Taking into account what is stated above, the main object of the present invention is providing a coffee dispensing machine which allows having a smooth dispensing of coffee powder in the container, in order to obtain a coffee whose aroma is stable and consistent.

Another object of the coffee dispensing machine of the present invention is controlling the operating mode of a user, detect related data to be stored and send them to a remote server, to be used to provide assistance or self learning services to the user, for example through suitable APPs. In order to obtain the object of the present invention, a coffee dispensing machine includes a dispenser, a first regulator and a second regulator. The dispenser has a rod and a dispensing element on an end of the rod and the dispensing element has a propeller structure. The first and the second regulator are connected to the rod of the dispenser to be rotated with respect to the dispensing element, while the second regulator is between the dispensing element and the first regulator, and the second regulator is a through-hole so that the rod passes through it.

The dispenser is capable of rotating to regulate the relative position to the second regulator when the first regulator is separated from the second regulator, and the dispenser is kept unmoving when the first regulator moves to touch the second regulator. The coffee dispensing machine of the present invention is connected to a container to allow the propeller structure to dispense the coffee powder in the container, and to flatten the surface of the coffee powder. The coffee dispensing machine of the present invention, through sensors, detects values of the force applied by a user and the rotation speed, in order to control, through a microprocessor, the operating mode of the user; it further detects a level of applied vibration, stores these data and sends them, through wireless connecting means or a USB connector, to a remote server, to provide services for the user.

The present invention will be better understood with reference to the following detailed description of some illustrative embodiments with reference to the enclosed drawings, in which:

Figure 1 is an exploded view of a preferred embodiment of the present invention;

Figure 2 is a side sectional view of a preferred embodiment of the present invention;

Figures 3a, 3b, 4a, 4b, 5a, 5b are perspective and sectional views of components of en embodiment of the dispenser of the present invention;

Figure 6 is a perspective view of the dispenser of the preferred embodiment of the present invention; Figure 7 is a side view of the dispenser of the preferred embodiment of the present invention;

Figure 8 is a perspective view of the preferred embodiment of the present invention, which shows the coffee dispensing machine assembled on a container;

Figure 9 is a partially sectional view of Figure 8; and Figures 10 to 12 are views of a second embodiment of the coffee dispensing machine according to the present invention. As shown in the Figures, a coffee dispensing machine of the preferred embodiment comprises a dispenser 10, a first regulator 20, a second regulator 30 and a cover 63 connected to the first regulator 20. The dispenser 10 includes a rod 12 and a dispensing element 14 connected at an end of the rod 12. The dispensing element 14 has a propeller structure 16, which preferably has four blades.

The first regulator 20 is connected to the rod 12 of the dispenser 10 to be rotated, and the second regulator 30 is also connected to the rod 12, and is between the dispensing element 14 and the first regulator 20. In the present embodiment, the rod 14 is internally hollow and comprises a threaded section 18 on its external surface; the first regulator 20 comprises a ring nut 22, comprising a threading 23 obtained on the internal surface, inside which a hollow shaft 62 is obtained; the second regulator 30 comprises a threaded hole 32, on the side wall of which a threaded section 34 is provided.

As shown in the Figures, the rod 12 of the dispenser 10 passes through the through-hole 32 of the second regulator 30 and then the threaded section 18 of the rod 12 is screwed in the threading 23 of the ring nut 22, while the threaded section 18 of the rod 12 engages both the threaded section 34 of the second regulator 30, and the threading 23 of the ring nut 22 of the first regulator 20. The second regulator 30 comprises a recess 36 on one of its sides which is in front of the dispensing element 14 of the dispenser 10. As a result, the dispensing element 14 can enter or leave the recess 36, while the dispenser 10 rotates with respect to the second regulator 30. The hollow shaft 62 of the first regulator 20 comprises a seat 65 having an opening oriented towards the part of the cover 63 which contains vibrating means, for example an electric motor 72 equipped with eccentric 73 assembled in the seat 65, configured to product a vibration when dispensing the coffee powder, in order to dispense the coffee powder optimally.

The cover 63 comprises, in a preferred way, at least one key 67 for controlling the coffee dispensing machine, for example four keys and a display. The coffee dispensing machine of the present invention comprises, for example arranged next to the cover 63, an electronic control unit 59 and supplying means, prefereably a rechargeable battery 51, for example by means of a USB connector.

The electronic control unit 59 comprises: a plurality of sensors, comprising position and/or speed sensors, for example a three-axes gyroscope, to detect speed and/or number of revolutions of the coffee dispensing machine, and pressure sensors to evaluate the force applied when using the coffee dispensing machine in order to control the operating mode of a user and the vibration of the vibrating means of the machine, for example through pre-set programs selectable through the keys and/or the display; a microprocessor of a known type, programmable to control the operation of the machine depending on data detected through said plurality of sensors; storing means to store data read by sensors, programs and operating mode; wireless connecting means, for example a Bluetooth and/or Wi-Fi transmitter, and a connector, for example of a USB type, configured to connect the coffee dispensing machine to an evaluating and learning system, for example loaded on a remote server, in order to exchange data therewith. As shown in Figure 6, the propeller structure 16 has a plurality of ribs 40, 40a and a plurality of curved surfaces 42 beween nearby ribs 40, 40a, respectively.

Preferably, the dispensing element 14, and in particular the propeller structure 16, is coated with

Diamond Like Carbon, DLC.

As shown in Figure 7, every curved surface 42 has a first portion of curve 44, a second portion of curve 46, and a third portion of curve 48. A side of the first portion of curve 44 is connected to the rib 40 (40a), while the other side thereof is slanted towards the other rib 40a (40). The second curved portion 46 is connected to the first curved portion 44, and the third curved portion 48 has opposite ends connected to the second curved portion 46 and to the rib 40 (40a). The curvature radius R1 of the first curved portion 44 is greater than the curvature radius R2 of the second curved portion 46, and the curvature radius R2 of the second curved portion 46 is greater than the curvature radius R3 of the third curved portion 48. The curvature radius R3 of the third curved portion 48 is in a range between 0.4 mm and 1.00 mm to make a smooth junction between the third portion of curve 48 and the rib 40 (40a). The angle Q of the first portion of curve 44 is in a range between 13.5° and 22.5°. The ratio (d/D) of the depth (d) of every curved surface 42 and the thickness (D) of the dispensing element 14 is in a range from 0.35 to 0.55. In a second embodiment of the invention, shown in Figures 10, 11 and 12, the propeller structure 16 of the dispensing element 14 comprises a dispensing surface 116 comprising a plurality of ridges 140, 140a and a plurality of plane surfaces 142 arranged between adjacent ridges 140, 140a.

As shown in Figures 10, 11 and 12, every plane surface

142 comprises a first portion 144 and a second portion 145; a side of the first portion 144 is connected to the second portion 145 in order to form the ridge 140, 140a, and the other side is connected to another second portion 145, in a preferred way through a radial portion 146 having for example a thickness of about 1 mm, to form a valley of the plane surface 142. Preferably, the first portion 144 and the second portion 145 are symmetrical with respect to the ridge 140, 140a and with respect to the radial portion 146.

In a preferred way, the dispensing surface 116 has a circular edge and the ridges 140, 140a are radial; for example, the dispensing surface 116 comprises four, substantially rectilinear radial ridges 140, 140a spaced bz an angle a equal to 90°, which separate four, mutually equal plane surfaces 142.

Preferably, the ratio (dl/Dl) of the depth (dl) of every plane surface 142 and the thickness (Dl) of the dispensing element 14 is in a range between 0.25 and 0.35. Preferably, the dispensing element 14, and in particular the dispensing surface 116 of the propeller structure 16, is coated with Diamond Like Carbon, DLC.

When a user rotates the first regulator 20 to make it leave the second regulator 30, the dispenser 10 is capable of being rotated to reciprocate.

When the dispenser 10 is rotated, the dispenser 10 can enter or leave the recess 36 of the second regulator 30 to regulate the position of the propeller structure 16. A user can read the display or a scale on the dispensing element 14 to see the value of the position of the dispensing element 14.

Then, the user rotates the first regulator 20 till it touches the second regulator 30 to keep the dispensing element 14 in its correct posizione through the threaded section 18 of the rod 12 which engages both the threaded section 34 of the second regulator 30 and the threading 23 of the ring nut 22 of the first regulator 20.

As shown in Figure 9, the coffee dispensing machine is associated with a container 50 wherein the coffee powder 52 is received. The propeller structure 16 of the dispensing element 14 can stir the coffee powder or flatten the surface of the coffee powder 52 regulating the position of the dispensing element 14. The design of the propeller structure 16 of the dispensing element 14 can re-arrange the coffee powder 52 when it is immersed into the coffee powder 52, and can make the coffee powder 52 with a perfect plate surface when it moves backwards. Therefore, the coffee powder 52 is pressed.

Finally, the coffee powder 52 can have a smooth distribution, and coffee made through such powder has a stable and consistent aroma.

In the operation of the coffee dispensing machine of the present invention, the sensors detect the values of force applied by the user and the rotation speed, in order to control, through the microprocessor, the operating mode of the user; it can also be possible to detect the vibration level applied by the vibrating means 72, 73; these data are stored in the storage means and can be sent, through the wireless connecting means or the USB connector, to a remote server, to be used to provide assistance or self-learning services to the user, for example through suitable APPs installed in a smartphone.

It is necessary to point out that the above described embodiments are only some of the preferred embodiments of the present invention. All equivalent structures which emply the concepts described in this document must fall within the scope of the present invention, as defined by the enclosed claims.