AUTONOMOUS RAPID BATCH BEVERAGE MAKER, SYSTEM AND METHOD
20220000306 · 2022-01-06
Inventors
Cpc classification
A47J31/42
HUMAN NECESSITIES
A47J31/007
HUMAN NECESSITIES
A47J31/18
HUMAN NECESSITIES
A47J31/525
HUMAN NECESSITIES
A47J31/401
HUMAN NECESSITIES
A47J31/52
HUMAN NECESSITIES
A47J31/002
HUMAN NECESSITIES
A23F5/262
HUMAN NECESSITIES
International classification
A47J31/52
HUMAN NECESSITIES
A47J31/40
HUMAN NECESSITIES
A47J31/42
HUMAN NECESSITIES
A47J31/44
HUMAN NECESSITIES
A47J31/46
HUMAN NECESSITIES
Abstract
An autonomous beverage maker, system and method for fresh brewed coffee, tea, and other beverages, responsive to sensed demand or inputted command, makes an initial beverage extract concentrate in a turbulent manner under unpressurized conditions, and then a dilute/secondary extract under pressurized conditions and mixes the initial extract and dilute to complete a beverage batch, successive secondary extracts/dilutes being made as required or desired to meet flavor, strength, etc., successive batches being rapidly made as required to meet demand, maintain level, etc. A parameter or parameters within a receiving or dispensing container is/are autonomously monitored to determine level, demand for additional beverage, beverage age, and or/other information, and responsive to the monitored information or an inputted command, the beverage maker autonomously adapts the beverage making operation or executes predetermined steps, such as, but are not limited to, making more or fewer beverage batches, or signals to dispose of existing beverage.
Claims
1. An autonomous beverage making system, comprising: a beverage making device comprising a sidewall bounding a beverage making chamber, a beverage making substance delivery opening through which a beverage making substance or substances can be delivered into the beverage making chamber, a drain conduit through which the beverage can be drained from the beverage making chamber, a filter platform disposed in the beverage making chamber separating the beverage making substance delivery opening from the drain conduit, a liquid medium delivery conduit having openings disposed about the beverage making substance delivery opening for directing a liquid beverage making medium into the beverage making chamber onto and about the sidewall for mixing with the beverage making substance or substances delivered into the beverage making chamber to make a batch of the beverage, the filter platform comprising a filter medium permeable to the liquid medium, the air or gas, and the beverage, and impermeable to remnants of the beverage making substance or substances from the making of the beverage, the drain conduit having an outlet; a beverage making substance delivery mechanism controllably operable to direct the beverage making substance or substances through the beverage making substance delivery opening into the beverage making chamber; a liquid medium delivery mechanism controllably operable to direct a flow of the liquid beverage making medium through the liquid medium delivery conduit and the openings thereof into the beverage making chamber; a multiple port valve having a first port connected to an air or gas moving system, a second port connected by the drain conduit to the beverage making chamber, and a third port connected to the outlet of the drain conduit, the multiple port valve, the liquid medium delivery mechanism, and the beverage making substance material delivery mechanism being automatically controlled responsive to an input signal and with the beverage making substance delivery opening in an open state, to: direct a predetermined initial quantity of the liquid medium into the beverage making chamber, and at the same or immediately thereafter deliver all or a portion of a predetermined quantity of the beverage making substance or substances through the beverage making substance delivery opening into the beverage making chamber and operate the multiple port valve in a first operating state together with the air or gas moving system to move air or gas through the drain conduit into the beverage making chamber so as to pass through the filter platform to agitate the liquid medium to mix with and suspend the beverage making substance or substances above the filter platform to make a quantity of a liquid beverage extract concentrate while gases escape from the beverage making chamber through the beverage making substance delivery opening; and then change the beverage making substance delivery opening to a closed state, and change the multiple port valve to a second operating state to cease the movement of the air or gas through the drain conduit and open the drain conduit to allow flow from the beverage making chamber to the outlet, while or followed by directing a predetermined second quantity of the liquid medium into the beverage making chamber to mix with the beverage making substance or substances to make a quantity of a dilute liquid beverage extract and force the liquid beverage extract concentrate through the filter platform and from the beverage making chamber through the drain conduit; and then drain the dilute liquid beverage extract through the filter platform and the drain conduit.
2. The autonomous beverage making system of claim 1, further comprising a source of pressurized air or gas automatically controlled to direct a flow of the pressurized air or gas into the beverage making chamber to force the dilute liquid beverage extract through the filter platform and the drain conduit as part of the draining of the dilute liquid beverage extract.
3. The autonomous beverage making system of claim 1, further comprising a source of pressurized air or gas automatically controlled to direct a flow of the pressurized air or gas into the beverage making chamber after the draining of the dilute liquid beverage extract, to dry the remnants of the beverage making substance or substances on the filter platform.
4. The autonomous beverage making system of claim 1, wherein the beverage making substance delivery opening is disposed above the filter platform so that the delivered predetermined quantity of the beverage making substance or substances will be dispersed into the liquid medium through which the air of gas is bubbling, above the filter platform.
5. The autonomous beverage making system of claim 1, wherein at one or more times during the mixing of the second quantity of the liquid medium with the beverage making substance or substances to make the quantity of the dilute liquid beverage extract, the multiple port valve is automatically changed to the first operating state to bubble the air or gas through the drain conduit into the beverage making chamber and through the second quantity of the liquid medium and the beverage making substance or substances.
6. The autonomous beverage making system of claim 1, wherein the housing of the beverage making device comprises a lower opening communicating with the beverage making chamber, a lower closure member supported for movement between a closed position in closing relation to the lower opening, and an open position removed from the lower opening, the lower closure member carrying the filter platform so as to be disposed between the beverage making substance delivery opening and the drain when the lower closure member is in the closed position.
7. The autonomous beverage making system of claim 6, further comprising a wiper for wiping the remnants of the beverage making substance or substances from the filter platform when the lower closure member is in the open position or moving between the closed position and the open position.
8. The autonomous beverage making system of claim 1, wherein the beverage making device comprises an upper closure member supported for movement between a closed position in closing relation to the beverage making substance delivery opening so as to be in the closed state, and an open position removed from the beverage making substance delivery opening so as to be in an open state.
9. The autonomous beverage making system of claim 1, comprising a receiving container disposed for receiving and mixing the quantity of the liquid beverage extract concentrate and the quantity of the dilute liquid beverage extract, the beverage making chamber having a predetermined volume, and the receiving container having a volume that is at least one multiple greater than the volume of the brewing chamber.
10. The autonomous beverage making system of claim 9, further comprising automatically repeating the directing of the predetermined second quantity of the liquid medium into the beverage making chamber to mix with the beverage making substance or substances to make a quantity of a dilute liquid beverage extract and forcing the liquid beverage extract concentrate through the filter platform and from the beverage making chamber through the drain conduit, to fill the receiving container.
11. The autonomous beverage making system of claim 1, wherein the liquid medium comprises hot water and the beverage making substance or substances comprise ground coffee or tea.
12. The autonomous beverage making system of claim 1, comprising a receiving container disposed for receiving and mixing the quantity of the liquid beverage extract concentrate and the quantity of the dilute liquid beverage extract to complete a batch of the beverage, and at least one sensor associated with the receiving container and operable to output a signal representing an amount of the beverage in the receiving container to a controller connected in operative control of the multiple port valve, the liquid medium delivery mechanism, and the beverage making substance material delivery mechanism.
13. The autonomous beverage making system of claim 12, wherein the at least one sensor associated with the receiving container comprises at least one Hall effect sensor, and the receiving container comprises a float configured to be sensed by the at least one Hall effect sensor to determine the amount of the beverage in the receiving container.
14. The autonomous beverage making system of claim 13, wherein the at least one Hall effect sensor comprises a plurality of the Hall effect sensors arranged in an upwardly and downwardly extending array and individually operable to sense vertical positions of the float and output signals representative thereof.
15. The autonomous beverage making system of claim 13, wherein the receiving container has an interior having a predetermined shape when viewed from above or below, the plurality of the Hall effect sensors arranged in the upwardly and downwardly extending array are located beside a predetermined region of the predetermined shape, and the float has a shape when viewed from above and below that matches the predetermined shape sufficiently to only be receivable in the interior in a manner to position an element on the float to be sensed individually by the Hall effect sensors.
16. The autonomous beverage making system of claim 1, comprising a receiving container disposed for receiving and mixing the quantity of the liquid beverage extract concentrate and the quantity of the dilute liquid beverage extract to complete a batch of the beverage, and a timer configured to determine a period of time that the batch of the beverage has been present in the container and output a signal representing the period of time to a communications device to alert an attendant of an age of the beverage in the container.
17. The autonomous beverage making system of claim 1, wherein the beverage making substance delivery mechanism comprises a beverage making substance grinder.
18. The autonomous beverage making system of claim 1, wherein the beverage making substance delivery mechanism comprises a conveyor.
19. The autonomous beverage making system of claim 1, comprising multiple holding containers of the beverage making substance or substances, and the beverage making substance delivery mechanism comprises at least one conveyor controllably operable to automatically selectably deliver the predetermined quantity of the beverage making substance or substances from one or ones of the holding containers through the beverage making substance delivery opening into the beverage making chamber.
20. The autonomous beverage making system of claim 1, comprising a receiving container disposed for receiving and mixing the quantity of the liquid beverage extract concentrate and the quantity of the dilute liquid beverage extract to complete a batch of the beverage, and configured for dispensing quantities of the beverage, and at least one sensor associated with the receiving container and operable to output a signal representing an amount of the beverage dispensed.
21. An autonomous beverage brewing system comprising a housing bounding a brewing chamber having a size to receive and hold a mixture comprising a quantity of the brewable material in a quantity of the liquid brewing medium to brew a batch of a beverage therefrom; a path between the source of the brewable material and the brewing chamber; a brewable material delivery mechanism controllably operable to direct the quantity of the brewable material along or from the path into the brewing chamber; a liquid brewing medium delivery mechanism comprising a conduit extending between the source of the liquid brewing medium and the brewing chamber, and a liquid brewing medium delivery driver disposed in connection with the conduit and controllably operable to direct the quantity of the liquid brewing medium from the source of the liquid brewing medium into the brewing chamber; a brewed beverage dispensing container configured to receive and hold a variable quantity of the brewed beverage, comprising an outlet through which individually selectable quantities of the brewed beverage can be dispensed from the brewed beverage dispensing container into another container; a brewed beverage dispensing mechanism comprising a source of pressurized air or gas, a conduit extending from the brewing chamber to the brewed beverage dispensing container, and a brewed beverage dispensing valve disposed along the conduit and controllably operable in a brewing mode to prevent flow between the brewing chamber and the brewed beverage dispensing container while allowing flow between the source of the pressurized air or gas and the brewing chamber, the brewed beverage dispensing valve being operable in a dispensing mode to allow flow between the brewing chamber and the brewed beverage dispensing container; at least one sensor in association with the brewed beverage dispensing container, automatically operable to sense an amount of the brewed beverage therein in a continuing manner and to generate outputs representative thereof; a closure element positionable in closing relation to the path between the source of the brewable material and the brewing chamber; a controller connected to the at least one sensor to receive the outputs therefrom, the controller being connected to the brewable material driver, the liquid brewable medium delivery driver, and the brewed beverage dispensing valve, and automatically operable to: i. determine whether an additional quantity of the brewed beverage is to be brewed as a function of the outputs received from the at least one sensor and at least one stored value, and; ii. if an additional quantity of the brewed beverage is to be brewed, then determine a number of the batches of the brewed beverage to be brewed as a function of at least the additional quantity; and then for each of the batches of the brewed beverage determined to be brewed, simultaneously controllably operate the liquid brewing medium delivery driver to direct a predetermined portion of the quantity of the liquid brewing medium from the source of the liquid brewing medium into the brewing chamber and controllably operate the brewable material driver to direct the quantity of the brewable material along or from the path into the brewing chamber, while controllably operating the brewed beverage dispensing valve in a brewing mode, and after a period of time for brewing an initial portion of the batch of the brewed beverage with the predetermined portion of the quantity of the liquid brewing medium and the quantity of the brewable material, controllably operate the brewed beverage dispensing valve to allow the flow of the initial portion of the batch of the brewed beverage along the conduit from the brewing chamber to the brewed beverage dispensing container, position the closure element in closing relation to the path between the source of the brewable material and the brewing chamber, and controllably operate the liquid brewing medium delivery driver to direct a predetermined second or remaining portion of the quantity of the liquid brewing medium from the source of the liquid brewing medium into the brewing chamber to mix with the quantity of the brewable material and flow along the conduit from the brewing chamber to the brewed beverage dispensing container.
22. The autonomous beverage brewing system of claim 21, comprising a brewed material waste disposal mechanism associated with the automatically controllable brewing mechanism, comprising a wiper supported for movement along a predetermined path and a waste disposal driver connected to the wiper and controllably operable to move the wiper along the predetermined path to remove portions of the brewable material therefrom, and wherein after the second or remaining portion of the quantity of the liquid brewing medium has flowed along the conduit from the brewing chamber to the brewed beverage dispensing container, the controller will automatically controllably operate the waste disposal driver to move the wiper along the predetermined path.
23. The autonomous beverage brewing system of claim 22, wherein the housing of the brewer comprises a lower opening communicating with the brewing chamber, a lower closure member supported for movement between a closed position in closing relation to the lower opening, and an open position removed from the lower opening, the lower closure member carrying a liquid permeable filter platform positioned to be located within a lower region of the brewing chamber when the lower closure member is in the closed position and onto which the brewable material will be deposited when or after the second or remaining portion of the quantity of the liquid brewing medium has flowed along the conduit from the brewing chamber to the brewed beverage dispensing container, the liquid permeable filter platform being disposed so as to be located in a predetermined location external to the brewing chamber when the lower closure member is in the open position, and the predetermined path of movement of the wiper being in predetermined relation to the predetermined location external to the brewing chamber so as to wipe portions of the brewable material remaining on the liquid permeable filter platform.
24. The autonomous beverage brewing system of claim 23, wherein the lower closure member is supported by at least one support arm in contact with and movable by a cam to move the lower closure member between the closed position and the open position.
25. The autonomous beverage brewing system of claim 24, wherein the cam is controllably movable by a rotary cam driver in a first direction to move the lower closure member from the closed position to the open position and to hold the liquid permeable filter in the predetermined location external to the brewing chamber to be wiped by the movement of the wiper, the cam being rotatable by the rotary cam driver in an opposite second rotary direction to move the lower closure member from the open position to the closed position to locate the liquid permeable filter within the lower region of the brewing chamber.
26. The autonomous beverage brewing system of claim 25, wherein the upper closure member is supported by at least one support arm in connection with a second rotary cam for movement by rotation of the second rotary cam driver between the closing relation to the upper opening, and an open position removed from the upper opening to allow passage of the quantity of the brewable material along or from the path into the brewing chamber.
27. The autonomous beverage brewing system of claim 26, wherein the rotary cam driver is controllably operable by the controller to control the rotation of the second rotary cam to move the upper closure member to the open position removed from the upper opening, prior to the operation of the brewable material driver to direct the quantity of the brewable material along or from the path into the brewing chamber.
28. The autonomous beverage brewing system of claim 27, wherein the controller will controllably operate the cam driver to control the rotation of the second cam to move the upper closure member from the closed position removed from the upper opening, to the closing relation to the upper opening after the operation of the brewable material driver by the controller to direct the quantity of the brewable material along or from the path into the brewing chamber.
29. A method for autonomously making a brewed beverage, comprising steps of: sensing a condition in a beverage receiving container representative of a quantity of the brewed beverage to be brewed; directing a predetermined initial quantity of a liquid medium into an open brewing chamber of a beverage making device while delivering a predetermined quantity of a brewable substance or substances for brewing the quantity of the brewed beverage into the brewing chamber above a filter and closed drain of the brewing chamber and while directing pressurized air or gas through the filter to mix and agitate the liquid medium and the brewable substance to extract flavoring elements from the brewable substance to make a concentrated quantity of liquid beverage extract while degassing the liquid beverage extract; then closing the brewing chamber and opening the drain to allow the liquid beverage extract to flow through the filter and the drain while closing the brewing chamber and adding an additional quantity of the liquid medium into the brewing chamber to pressurize the brewing chamber and dilute the liquid beverage extract; and draining the diluted liquid beverage extract into the beverage receiving container.
30. The method for autonomously making a brewed beverage of claim 29, comprising a step during the diluting of the liquid beverage extract, of directing a flow of pressurized air or gas into the brewing chamber to force the dilute liquid beverage extract through the filter medium and into the drain.
31. The method for autonomously making a brewed beverage of claim 30, comprising continuing to direct the flow of pressurized air or gas into the brewing chamber after the dilute liquid beverage extract has passed through the filter medium and into the drain, to dry any remnant of the brewable substance.
32. The method for autonomously making a brewed beverage of claim 31, comprising a step of removing the filter medium from the brewing chamber and wiping the remnant of the brewable substance therefrom.
33. The method for autonomously making a brewed beverage of claim 29, wherein the brewable substance comprises ground coffee.
34. The method for autonomously making a brewed beverage of claim 29, wherein the brewable substance comprises ground tea leaves.
35. The method for autonomously making a brewed beverage of claim 29, wherein the condition in the beverage receiving container comprises information representative of a level of the brewed beverage contained in the receiving container.
36. The method for autonomously making a brewed beverage of claim 29, wherein the condition in the beverage receiving container comprises information representative of a rate of dispensing of the brewed beverage from the receiving container.
37. The method for autonomously making a brewed beverage of claim 29, wherein the condition in the beverage receiving container comprises information representative of a height of the receiving container.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
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DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTION
[0071] Referring now to
[0072] To eliminate the need to manually supply a quantity of a beverage making substance for each batch, beverage maker 40 includes a source 50 of a beverage making substance 52 for each beverage making device 42, which here, because the beverage is coffee or tea, includes a hopper 54 at the top of maker 40, configured to hold a quantity of beverage making substance 52, e.g., coffee beans, tea leaves; hoppers 54 being jointly contained under a hopper cover 56. For greater freshness, for making coffee, it is desired to use whole coffee beans, and accordingly, each beverage making device 42 includes a bean grinder 58 disposed below associated hopper 54 and connected thereto by a bean chute 60. A bean detector 62 operable to detect the presence of beans in chute 60 or at grinder 58 and output a signal representative thereof, e.g., a pressure pad, switch, or optical sensor, is appropriately located in association with one of those items. Detector 62 can also output a signal when beans are absent or the supply is low. Grinder 58 is of conventional construction and operation responsive to an inputted power signal from a power source, e.g., conventionally connected line power, and will discharge beverage making substance 52, in the form of ground coffee, downwardly therefrom, and includes an optional vibration pad 64 to facilitate downward and complete flow of a batch of the ground coffee. Hopper 54, hopper cover 56, bean grinder 58, chute 60, and detector 62, comprise components of a beverage making substance delivery mechanism 88 of each beverage making device 42, contained within a housing 64 of beverage maker 40, supported by various brackets and fittings. Here, the bean grinder 58 comprises a brewable material driver controllably operable to deliver the brewable material to the beverage making or brewing device.
[0073] Here also, it should be recognized and understood that for another beverage making substance, each beverage making device 42, will include suitable beverage making substance holding capacity, preparation apparatus, such as a grinder for tea leaves or the like, and other delivery mechanism aspects configured to properly prepare the particular substance. As a non-limiting example, for tea, a similar configuration of a beverage making substance delivery mechanism such as mechanism 88 as just explained but adapted as necessary or desired may be utilized. As another example, for ground coffee or tea, a more simple gravity feed hopper, or an auger system in connection with a container, or the like, may be provided. It is contemplated that the hopper 54 will have capacity to hold a sufficient quantity of beans or other beverage making substance for making numerous batches of beverage.
[0074] Bean grinder 58 and the other aspects of beverage making substance delivery mechanism 88 are automatically controlled in conjunction with operation of other aspects of the associated beverage making device 42, by a microprocessor based controller 68, which can comprise a single microprocessor or multiple ones networked, having at least one operator or user interface 70, here comprising a graphical touchpad, controller 68 being programmable to store and execute operating programs and routines for each of the beverage making devices 42, including to display desired graphics and input interfaces on user interface or interfaces 70. Alternatively, separate controllers 68 can be used. Controller 68 is connected to the controlled components of each beverage making device 42 by suitable conductive paths 72 which can be wires of a wiring harness, and/or a wired or wireless network, e.g., LAN, or the like. Controller 68 can include or be associated with other input/output devices, including wired and wireless network devices, Bluetooth devices, near field communication devices, and the like, for communicating with other systems, devices, and networks, in the well known manner.
[0075] The making of the beverage, here, brewing coffee or tea, requires a supply of a beverage making liquid medium, namely, hot water. As non-limiting examples of alternatives, for some beverages a liquid beverage concentrate or syrup may be used. For convenience, beverage maker 40 includes a source 74 of the beverage making liquid medium (hot water) contained in housing 66, comprising a hot water tank 76 of well-known conventional construction and operation, e.g., including a freshwater connection and valve for receiving water, a conventionally powered heating element, etc. Each beverage making device 42 includes a liquid medium delivery mechanism 78 operable to control delivery of the hot water from tank 76 to the respective device 42. Here, this includes a hot water pump 80 (either joint or one each for the devices 42) connected via a liquid medium delivery conduit 82, e.g., one or more hoses and/or tubes, between an outlet of pump 80 and the respective device 42 to serve as a liquid brewing medium delivery driver. Controller 68 controls flow of the liquid medium, e.g., hot water, via controlled operation of pump 80 and/or a hot water valve of mechanism 78 disposed in conduit 82, with flow being monitored and determined by a flow meter 84 connected to controller 68 which responsively controls the hot water delivery. As a convenience, conduit 82 additionally includes a connection to a hot water faucet 86 on the front of maker 40. Hot water tank 76 preferably has capacity for multiple batches of beverage, with a robust heating capability, so as to replenish hot water quickly when demand is high. This allows the tank 76 to be relatively small to conserve space, and allow room for larger decanters 46 or other beverage storage receivers for a given space. It also facilitates providing two beverage making devices in a relatively compact countertop package. As an alternative, connection to an external source of hot water can be used.
[0076] General method aspects of preferred autonomous operation under control of controller 68 according to the invention for brewing small, consistently high quality batches of coffee quickly, include directing a predetermined initial quantity of the liquid medium (hot water) into a beverage making or brewing chamber of the beverage making device, along with delivering all or a portion of a predetermined quantity of the beverage making substance or substances (e.g., ground coffee, tea) into the beverage making chamber, in a manner to quickly achieve full wetting of the beverage making substance by the liquid medium to make a concentrated quantity of liquid beverage extract.
[0077] At the same time, for some beverages, it is desired to commence degassing of the beverage making substance, that is, removing of carbon dioxide in the case of coffee. These important steps are preferably accomplished by mixing the beverage making substance in the beverage making liquid in a high state of agitation, as opposed to standing immersion of the beverage making substance in a large quantity of the beverage making liquid.
[0078] As or shortly after this limited, initial quantity of the hot water is introduced into the beverage making chamber, it is preferably commenced to be agitated by bubbling air through it, while mixing with the beverage making substance, without the beverage making substance settling significantly against a filter medium, as is observed to occur with many known conventional coffee brewers and French press type brewers. This is also preferably done in a non-pressurized or low pressure environment to allow the gas to escape. The agitation thus facilitates the penetration of the hot water into the ground coffee particles from virtually every direction to effect the desired extraction, in contrast to slow seeping with known brewers, and also the escape of gas from the particles.
[0079] As a preferred manner of agitation, the air (or gas) for generating the bubbling is introduced through a filter medium, comprising a liquid, air, and gas, but not ground coffee, permeable platform, separating a main beverage making or mixing region of the beverage making chamber from a drain or liquid collecting region. During the agitation, that portion of the drain conduit comprising a beverage delivery path or conduit to the receiving container, is preferably closed to prevent escape of the air used for agitation and reduce the quantity required.
[0080] According to further method aspects of the invention, once the concentrated initial beverage extract has been made, and the grounds largely degassed, the main beverage making or mixing region is closed, the bubbling air delivery through the filter medium is discontinued allowing the extract to be filtered and drained out of the beverage making chamber, and additional hot water introduced. This additional hot water can comprise all of the remaining quantity required to make the batch, or it can comprise one of 2 or more quantities that will provide the desired dilution, additional extraction, and overall quantity. The introduction of the additional hot water can be timed to occur at about the same time, just before, or after, the drain is opened, so that the additional water can act to force the extract from the beverage making material and through the filter.
[0081] The closure of the main beverage making or mixing region is advantageous in association with the introduction of the additional hot water, as this will serve to increase ambient pressure in the main beverage making or mixing region compared to pressure in the drain or liquid collecting region on the opposite side of the filter medium, to create a pressure differential therebetween which will function to push the initial extract and diluted extract through the filter medium into the drain region. Thus, advantageous pressurization can be achieved quickly without requiring pumping air into the mixing region, which can be time-consuming if a large quantity of beverage is being made. Providing a relatively small batch mixing region is advantageous in this regard, as it can be sufficiently pressurized very quickly merely by the introduction of the additional hot water, to enhance flow of the initial extract and dilute through the filter medium into the drain region. Presence of coffee grounds on the mixing region side of the filter medium will obstruct direct air flow therethrough and facilitate the creation of the pressure differential. Also, it will drive flow of the diluting hot water through the coffee grounds in that direction to extract and drain remnants of the initial extract and additional flavor components, all very quickly. Thus, it is evident that an adequate pressure differential for mixing and draining can be created without having to positively pressurize a large mixing or brewing vessel using an air pump or other means, and/or sealing and creating a partial vacuum condition in a large receiving container, and associated drain region of the mixing vessel. It should be noted, however, that it is an option to introduce pressurized air into the main mixing region during the second and subsequent dilutions to create a greater or enhanced pressure differential across the filter medium to press the dilute extract(s) through the filter medium, if desired or required for a particular beverage or quality. After a batch is complete, the remnant waste grounds are removed, and the mixing chamber can be optionally washed, in preparation for making a subsequent batch. As a result, small, high quality batches of beverage can be made in quick succession responsive to, or in anticipation of, level in the receiving container, demand, and/or other parameters, etc.
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[0083] With the preparation of the concentrated initial beverage extract complete, the main beverage mixing region can be closed by the controller 68 and the air or gas flow through the drain conduit stopped, and the liquid medium delivery mechanism 78 operated by the controller to deliver an additional quantity of hot water to the main beverage mixing region as gauged by the flow meter 84. As explained above, because this region is now closed, the addition of this volume of liquid will pressurize air therein. And, because the initial extract and ground coffee is no longer being agitated, the ground coffee can settle against the filter medium. Multiple port valve arrangement 100 is controlled to open to allow flow through the drain conduit into the receiving container 44, as denoted by arrows 102. Receiving container 44 will be at ambient pressure. Thus, a higher pressure condition will exist in the main mixing region of device 42, and a lower pressure condition will exist in the receiving container 44, thereby creating a pressure differential across the filter medium, such that the additional hot water will mix with and press the initial extract through the coffee grounds and filter medium. As an optional feature, as noted above, additional air pressure can be generated in the main mixing region using an air pump to sustain and/or increase the pressure differential, to facilitate flow of the beverage into the receiving container 44. This can optionally be delivered through aspects of the liquid medium delivery mechanism as denoted by arrow 124, by connection of an air pump 122 in conjunction therewith, as will be explained, or separately. The step of addition of hot water as a diluting medium as well as for further flavor extraction, and supplying air into the main mixing region to enhance flow, can be performed one or more times as desired or required for completing a particular beverage batch.
[0084] It should be recognized and understood that the steps of the preferred method of the invention can be performed using a variety of different beverage making apparatus, although devices, 42 of beverage maker 40 are exemplary and preferred.
[0085] Referring also to
[0086] Referring again to
[0087] A filter platform 124 or tray is supported in beverage making chamber 106, separating main beverage making region 108 from a collecting or drain region 126. Filter platform 124 comprises a filter medium 128. A filter medium 128 of known construction and operation, e.g., fine mesh or screen, that is permeable to the liquid medium (here, hot water), air, and gas, but largely impermeable to elements of the beverage making substance or substances, particularly, remnants of the beverage making substance or substances (here, ground coffee). A drain outlet 130, comprising a drain nipple 132, connects to a drain conduit 134 (also see
[0088] Again referring to
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[0090] Referring also to
[0091] Essentially, cam track gear train 158 utilizes a rotary cam driver assembly 162 controllably operable in one mode by controller 68 to rotate a cam track gear 166 in connection with an upper support arm 160 supporting upper closure member 140, to counterclockwise rotate and lower upper closure member 140 (as denoted by arrows in
[0092] The rotary cam driver assembly is controllably operable in another mode by controller 68 to rotate a cam track gear 164 to move a lower support arm 168 having a follower or followers engaged with cam tracks of gear 164, and carrying lower closure member 136, for moving lower closure member 136 between a position in closing relation to lower opening 138 so that opening 138 is in its closed state, as shown in
[0093] As previously explained,
[0094] In
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[0097] Optionally, a temperature sensor 192, e.g., a thermocouple, at an appropriate location on decanter 46 can be connected to communications interface 190, to provide information representative of temperature of the beverage contents to controller 68. An associated heating element can also optionally be provided and activated, either by a signal from a sensor 192 in a feedback loop, or by controller 68, to heat the beverage contents of decanter 46.
[0098] In operation, information from sensor strip 188 or another sensing system, can be used by controller 68 to determine when to initiate making of a new beverage batch or batches. As non-limiting examples, the making of a new batch or batches can be initiated responsive to beverage level, e.g., falling below a certain programmed set point; and/or responsive to a rate of change (e.g., downward movement) of platform 178, thus representing a dispensing rate of beverage, determined by controller 68 from signal changes from the sensor strip 188 or other sensor system. Under high beverage dispensing volume conditions, e.g., busy times in a restaurant, café or the like, while the associated beverage making device is replenishing the beverage, movements of floating platform 178 may at times be alternatingly upward and downward, and controller 68 can be programmed to responsively determine whether to continue making additional batches, corresponding to set rules and/or adaptively based on history. As the batches are of small volume compared to the volume of decanter 46, even small changes in dispensing volume can be responded to for closely maintaining a desired level of beverage. Decanter time on station can also be monitored to determine freshness, and a signal outputted by controller 68 to personnel indicating that a decanter should be emptied, cleaned, etc.
[0099]
[0100] Referring also to
[0101] In light of all the foregoing, it should thus be apparent to those skilled in the art that there has been shown and described an autonomous rapid batch beverage maker, system, and method that provides one or more of the advantages and overcomes one or more of the limitations, set forth above. However, it should also be apparent that, within the principles and scope of the invention, many changes are possible and contemplated, including in the details, materials, and arrangements of parts which have been described and illustrated to explain the nature of the invention. Thus, while the foregoing description and discussion addresses certain preferred embodiments or elements of the invention, it should further be understood that concepts of the invention, as based upon the foregoing description and discussion, may be readily incorporated into or employed in other embodiments and constructions without departing from the scope of the invention. Accordingly, the following claims are intended to protect the invention broadly as well as in the specific form shown, and all changes, modifications, variations, and other uses and applications which do not depart from the spirit and scope of the invention are deemed to be covered by the invention, which is limited only by the claims which follow.