Customized beverage making apparatus, system and method

文档序号:1008587 发布日期:2020-10-23 浏览:23次 中文

阅读说明:本技术 定制饮料制作装置、系统和方法 (Customized beverage making apparatus, system and method ) 是由 L·V·克劳斯 S·古勒里亚 M·B·古勒里亚 N·古勒里亚 W·麦克劳德 C·V·海夫纳 于 2019-01-08 设计创作,主要内容包括:提供了一种用于分配流体的系统,其中第一流体匣盒和第二流体匣盒各自在相应的流体出口处包括第一喷口,并且其中提供了对接位置,用于对接每个流体匣盒,使得第一喷口与第二喷口相邻。所述系统可以进一步包括液滴传感器,用于在液滴检测位置检测从流体匣盒分配的液滴的数量。对接位置可以为在对接位置对接的任何匣盒限定特定的定向,并且匣盒可以是楔形的,并且每个匣盒都可以朝向其相应的喷口逐渐变细。还提供了一种流体匣盒,该流体匣盒包括匣盒外壳、流体入口、在流体填充液位上方的流体出口,以及用于将流体从匣盒内部输送到流体出口的虹吸管。(A system for dispensing fluid is provided wherein a first fluid cassette and a second fluid cassette each comprise a first spout at a respective fluid outlet, and wherein a docking position is provided for docking each of the fluid cassettes such that the first spout is adjacent to the second spout. The system can further include a drop sensor for detecting the number of drops dispensed from the flow cartridge at the drop detection location. The docking position may define a particular orientation for any cartridge docked in the docking position, and the cartridges may be wedge-shaped, and each cartridge may taper towards its respective spout. A flow cassette is also provided that includes a cassette housing, a fluid inlet, a fluid outlet above a fluid fill level, and a siphon tube for transporting fluid from inside the cassette to the fluid outlet.)

1. A system for dispensing a fluid, comprising:

a first fluid cassette comprising a first spout at a fluid outlet of the first fluid cassette for dispensing fluid;

a second fluid cassette comprising a second spout at a fluid outlet of the second fluid cassette for dispensing fluid; and

a docking position for docking a plurality of flow cassettes;

wherein the first jet is adjacent to the second jet when the first and second fluid cassettes are both docked in the docked position.

2. The system of claim 1, wherein the first and second flow cassettes are each wedge-shaped, and wherein the first and second flow cassettes are each tapered to the first and second fluid jets, respectively.

3. The system of claim 1, wherein the docked position defines a particular orientation of any cassette docked at the docked position such that the spout of the respective cassette is in a designated position.

4. The system of claim 3, wherein the first and second flow cassettes are each coupled to the docked location by a respective magnetic fixation point, and wherein the magnetic fixation point requires the respective flow cassette to be implemented in a particular orientation.

5. The system of claim 1, further comprising a drop sensor for detecting a number of drops dispensed from the first and second flow cassettes, wherein the spout dispenses a drop of fluid at a drop detection location.

6. The system of claim 5, wherein the droplet sensor is a capacitive sensor, and wherein the first and second orifices are located above the capacitive sensor, and wherein droplets falling from the first and second orifices fall on opposite sides of a capacitor of the capacitive sensor.

7. The system of claim 5, wherein the drop sensor is a laser sensor.

8. The system of claim 5, wherein the drop sensor is a reflective sensor.

9. The system of claim 1, wherein the first and second fluid cassettes further each comprise a machine readable element for identifying the contents of the cassette, and wherein the docked position comprises a reader for the machine readable element.

10. The system of claim 9, further comprising processing circuitry for dispensing fluid from a plurality of flow cassettes based on a recipe and the contents of the machine readable element.

11. A flow cassette comprising:

a cassette housing for holding fluid to a fluid fill level;

a fluid inlet;

a fluid outlet above the fluid fill level; and

a siphon for conveying fluid within the fluid cartridge below a fluid fill level to the fluid outlet,

wherein application of pressure at the fluid inlet causes fluid from the flow cassette to be dispensed at the fluid outlet.

12. The cartridge of claim 11, wherein the siphon tube comprises:

a first surface having a first surface groove; and

a second surface for engaging with the first surface,

wherein the first surface groove and the second surface combine to form the siphon tube when the first surface is pressed against the second surface.

13. The cartridge of claim 12, wherein the second surface has a second surface groove, and wherein the first surface groove and the second surface groove combine to form the siphon tube when the first surface is pressed against the second surface.

14. The cartridge of claim 13, wherein the first and second surfaces are planar.

15. A cartridge according to claim 13, said housing further comprising a cover and wherein said first surface is an extension of said cover and said second surface is an inner surface of said housing and wherein application of said cover to said cartridge presses said first surface against said second surface.

16. A cassette as claimed in claim 15, wherein said cover is pressed against said housing by a magnetic closure.

17. The cartridge of claim 11, further comprising an anti-siphon applied to the fluid inlet, and wherein the fluid inlet is below the fluid fill level in the housing, and wherein the anti-siphon directs pressure from the fluid inlet above the fluid fill level.

18. The cassette of claim 11, wherein the siphon tube includes a generally U-shaped bend, and wherein the fluid outlet is directed downwardly.

19. The cartridge of claim 11, further comprising a spout at the outlet, the spout including a downwardly curved channel.

20. The cassette of claim 19, wherein the spout is located at a first corner of the cassette.

21. The cassette of claim 20, wherein the cassette is generally wedge-shaped, and wherein the wedge tapers to the first corner.

22. The cartridge of claim 11, further comprising a machine readable element for identifying the contents of the cartridge.

23. The cartridge of claim 22, wherein the machine readable element is user programmable or encodable.

24. A system for carbonating a fluid, comprising:

a gas supply device;

a fluid container;

a holder for holding the fluid container relative to the gas supply; and

a gas injector for injecting gas from the gas supply into the fluid container, wherein, during use, the gas injector injects gas below a liquid level within the fluid container.

25. The system of claim 24, wherein the fluid container further comprises at least one inner surface for blocking a path for the gas to return to an upper surface of the fluid after injection.

26. The system of claim 25, wherein the at least one inner surface is a helical path adjacent an outer wall of the fluid container.

27. The system of claim 26, wherein the spiral path further comprises a surface agitator on a lower surface of the path for redirecting fluid traveling along the spiral path.

28. The system of claim 25, wherein the at least one inner surface comprises an annular flange below the liquid level, and wherein, upon injection, gas travels to a bottom of the fluid container and is redirected downwardly by the annular flange upon rising to an upper surface of the fluid.

29. The system of claim 28, wherein the annular flange is downwardly concave and maintains gas below the liquid level.

30. The system of claim 29, wherein the annular flange is mesh-shaped, thereby allowing contact between the gas and the fluid above the annular flange.

31. The system of claim 25, wherein the at least one inner surface comprises a plurality of annular flanges secured to the gas injector.

32. The system of claim 25, wherein the at least one inner surface comprises at least one inner surface that branches into a plurality of inner surfaces.

33. The system of claim 24, the fluid container further comprising a gas blender for breaking up gas bubbles into smaller gas bubbles.

34. The system of claim 33, wherein the gas agitator is a grid below the liquid level of the fluid container, wherein the injected gas passes through the grid.

35. The system of claim 33, wherein the gas blender is at least one object with an accessory within the fluid container.

36. The system of claim 24, the gas injector comprising at least one nozzle extending below the liquid level, wherein the nozzle moves relative to the holder during gas injection.

37. The system of claim 36, wherein the nozzle has an offset orifice such that the injected gas pushes against the nozzle during gas injection.

38. The system of claim 36, wherein the nozzle is mounted on the holder by a pivot connection to allow the nozzle to move during gas injection.

39. The system of claim 36, wherein the tip of the nozzle is in a reed structure for generating vibrations during the gas injection.

40. The system of claim 36, further comprising a plurality of nozzles at different locations for injecting gas simultaneously.

41. The system of claim 24, the fluid container further comprising an inlet and an outlet, and wherein the retainer retains the inlet relative to the gas supply, and wherein the outlet delivers carbonated fluid to a system outlet, and wherein, after the fluid in the fluid container is carbonated, the outlet is opened and gas from the gas supply displaces the fluid in the fluid container.

42. The system of claim 24, wherein the gas supply device comprises:

a gas storage tank;

a gas outlet for delivering gas from the gas reservoir to the fluid container;

a flexible tube having a first end at the gas outlet and extending into the gas reservoir; and

and the floater is used for suspending the second end of the flexible pipe in the gas storage tank.

43. A bottle for carbonated beverages, comprising:

a container for containing a carbonated beverage;

a removable cover; and

at least one inner surface for blocking the path of a carbonation gas within the bottle to the removable cap.

44. The bottle of claim 43, wherein the inner surface is a downwardly facing surface extending from an inner wall of the container, wherein the downwardly facing surface collects carbonation gas rising from the carbonated beverage.

45. The bottle of claim 44, wherein said downwardly facing surface has a reticulated upper surface such that the collected carbonated gas is exposed to fluid above said downwardly facing surface.

46. The bottle of claim 44, wherein said downwardly facing surface is concave.

47. The bottle of claim 43, wherein said inner surface is at least one mesh element submerged below a surface level of said carbonated beverage within said container such that a carbonation gas is captured below said mesh element when separated from said carbonated beverage.

48. The bottle of claim 43, further comprising:

a bottom surface on which the bottle rests; and

an upper surface, independent of the removable cover,

wherein the inner surface is the upper surface, and wherein the carbonated gas collects near the upper surface, and

wherein the removable cap is below a surface level of the carbonated beverage when the bottle is substantially full and rests on the bottom surface.

49. A method of carbonating a fluid, comprising:

providing a fluid container for carbonated fluid;

substantially filling the fluid container with the fluid;

injecting at least a first dispense of a carbonation gas into the fluid within the container;

maintaining an elevated pressure within the fluid container such that the carbonation gas is absorbed into the fluid; detecting a user indication indicating that a carbonation level of a carbonated fluid is higher than the carbonation level at the time of the user indication;

injecting at least one additional dispense of carbonated gas into the fluid within the container; and

dispensing the fluid to the user.

50. The method of claim 49, further comprising releasing excess carbonation gas into an exterior space of the fluid container prior to dispensing the fluid to the user.

51. The method of claim 49, further comprising releasing excess carbonation gas from the fluid container to a space exterior to the fluid container after detecting the user indication and prior to injecting the at least one additional dispense.

52. The method of claim 49, wherein said at least a first allocation is a three-allocation, and wherein said high pressure is above 150 PSI.

53. The method of claim 49, wherein the carbonation level of the fluid at the time of the user indication is based on a wait time between the at least first dispense and the user indication.

54. A fluid delivery system, comprising:

at least one pressurized fluid conduit;

a pressure or fluid source for providing a pressure or fluid flow at the at least one pressurized fluid conduit;

at least one auxiliary container having an inlet and an outlet; and

a controllable valve associated with the at least one auxiliary container,

wherein the pressurized fluid conduit is in communication with an inlet or an outlet of the at least one auxiliary container when the respective controllable valve is open, and

wherein the controllable valve determines whether the auxiliary container is exposed to the pressure or fluid flow.

55. The fluid delivery system of claim 54, wherein the pressure or fluid source is a pressure source.

56. The fluid delivery system of claim 55, wherein said pressure source is a pump.

57. The fluid delivery system of claim 57, wherein the pump is a peristaltic pump.

58. The fluid delivery system of claim 55, wherein said at least one auxiliary container is a fluid container containing an additive for addition to said fluid.

59. The fluid delivery system of claim 58, wherein the at least one auxiliary container is a plurality of auxiliary containers, and each of the auxiliary containers has a respective controllable valve, and each of the auxiliary containers contains a different additive.

60. The fluid delivery system of claim 55, wherein the pressurized fluid conduit is in communication with the inlet of the auxiliary container, and wherein the controllable valve is between the pressure source and the inlet such that when the controllable valve is opened, pressure is applied to the inlet and the contents of the respective auxiliary container are discharged through the outlet.

61. The fluid delivery system of claim 60, wherein said at least one auxiliary container is a plurality of auxiliary containers, each having a respective independently controllable valve, and each of said auxiliary containers containing a different additive.

62. A fluid delivery system according to claim 61, wherein said valves can be opened simultaneously or sequentially to controllably combine additives from multiple auxiliary containers.

63. The fluid delivery system of claim 60, wherein said outlet of said at least one auxiliary container deposits fluid from said auxiliary container directly into a fluid stream or device outlet.

64. The fluid delivery system of claim 63, wherein the fluid stream is a water conduit that is not in direct contact with the outlet of the at least one auxiliary container such that fluid drips from the outlet into the fluid stream.

65. The fluid delivery system of claim 60, wherein the outlet of the at least one auxiliary container is connected to an outlet conduit that delivers the contents of the auxiliary container to an additive injection location.

66. The fluid delivery system of claim 55, wherein said pressurized fluid conduit is in communication with said outlet of said at least one auxiliary container and said pressure source applies negative pressure to said outlet and said controllable valve determines whether to withdraw fluid from said auxiliary container.

67. The fluid delivery system of claim 66, wherein the controllable valve is located between the pressure source and the respective auxiliary container.

68. The fluid delivery system of claim 66, wherein the controllable valves are located at respective auxiliary container inlets such that opening of the controllable valves allows ambient air to displace fluid such that fluid can be drawn by negative pressure at the outlets.

69. The fluid delivery system of claim 55, wherein the pump reverses fluid flow to facilitate cleaning of the pressurized fluid conduit or outlet conduit such that fluid is drawn from the secondary container into the outlet conduit and returned to the secondary container.

70. The fluid delivery system of claim 55, wherein the auxiliary container contains a cleaning solution or water, or wherein the pressurized conduit can draw fluid from a water source.

71. The fluid delivery system of claim 55, wherein said auxiliary container is removable or refillable.

72. The fluid delivery system of claim 61, wherein the additive is a flavoring agent, a coloring agent, or a mineral additive.

73. The fluid delivery system of claim 54, wherein the controllable valve is a solenoid valve.

74. The fluid delivery system of claim 54, further comprising a first detector for detecting the contents of a beverage container and controlling the controllable valve to regenerate the contents of the beverage container and dispense the regenerated contents.

75. The fluid delivery system of claim 54, further comprising a second detector for determining a liquid level of the beverage container and dispensing regenerated contents only when the fluid in the beverage container is depleted.

76. The fluid delivery system of claim 54, wherein the fluid source or pressure source is a water source.

77. The fluid delivery system of claim 76, wherein said at least one auxiliary container is a filter.

78. The fluid delivery system of claim 76, wherein said at least one auxiliary container is a plurality of different filter segments, each filter segment being provided with a controllable valve at its inlet, and wherein water from said water source enters said filter segment if said controllable valve is open and will bypass said filter segment if said controllable valve is closed.

79. The fluid delivery system of claim 78, wherein each of the plurality of different filter segments is arranged in series such that water from the outlet of a first filter segment next encounters the controllable valve at the inlet of a second filter segment, and such that any fluid bypassing the first filter segment will also encounter the inlet of the second filter segment.

80. The fluid delivery system of claim 79, wherein each of the plurality of different filter segments is interchangeable and user selectable to change a filtration characteristic of the fluid delivery system.

81. The fluid delivery system of claim 78, wherein the plurality of distinct filter segments comprises at least one of:

a large particle filter;

a particulate or solid bulk carbon filter;

a microfiltration membrane; and

a nanofiltration membrane.

82. The fluid delivery system of claim 76, wherein the water source is a faucet.

83. The fluid delivery system of claim 76, further comprising a water turbine applied to the pressurized fluid conduit and providing power to the fluid delivery system.

84. The fluid delivery system of claim 54, wherein the at least one auxiliary container is a fluid heating or cooling module or a fluid carbonation module.

Technical Field

The present invention relates to a customized beverage making device, system and method, including such a device for flavoring, filtering and carbonating a beverage.

Background

Traditionally, people have purchased beverages from local stores, or more recently, via online delivery services. Such beverages may include flavored beverages, carbonated beverages, and even basic beverages such as filtered water. These beverages are sometimes purchased in bulk in containers. These containers may be bottles, each of which may hold, for example, 1 liter of water, or larger containers. When the contents of one container are consumed, the other container is retrieved and opened for consumption. This process is very convenient, requiring only occasional visits to the store (or online clicks in the case of online ordering of beverages), occasional handling and replacement of empty containers. Although this beverage access method is simple, it generates a large amount of waste (usually plastic waste, since the containers are usually made of plastic). Therefore, the development of a home beverage making system is expected to reduce waste.

In developing a home beverage making system, the convenience of beverage making is ideally close to or better than the convenience of the existing beverage acquisition methods already described above. In particular, in order to further reduce the workload involved in existing beverage acquisition methods, at least some of the following problems may be further eliminated: 1) a need to go to a shop to replenish the beverage containers, 2) a need to handle empty containers, and a need to store crates with full containers. These problems should be solved while 3) avoiding the introduction of new significant inconveniences. Furthermore, the beverage making system may introduce new advantages, such as the continuous making of customized beverages at a lower cost than traditional beverage procurement.

Each of these problems can be solved by creating a home beverage making device that allows a user to make a beverage from tap water or water from another source (e.g., a dedicated pipe or tank) that can be filtered, flavored, and carbonated according to the user's specifications. There are several existing devices that attempt to do this, but doing so can cause new inconveniences to the user. We propose a novel customized beverage making device herein that has unique functionality to avoid the inconvenience of other prior devices.

Generally, in various embodiments, the apparatus is designed to enable or facilitate one or more of the preparation, personalization, or purification of water and flavored beverages.

Current processes for the preparation of water and beverages are time consuming and cumbersome, requiring the bottles to be cleaned, the water to be cooled, and the water to be filtered, carbonated and flavored by different processes. Users often end up with disposable plastic bottles in order to avoid the cumbersome process of preparing beverages.

For personalization of water and beverages, family members or commercial establishment customers may prefer different types of water and flavored beverages of slightly different formulations. For example, a user may prefer beverages with different carbonation levels, different temperatures, or different flavors. Even if the recipe is repeatable, it is difficult to accurately dispense ingredients such as flavoring syrups. Therefore, it is difficult, if not impossible, to repeatedly prepare a beverage without proper equipment.

Purifying water using existing systems is often expensive, wasteful, cumbersome, and/or requires large equipment. Such purification may further remove beneficial minerals. Consumer oriented filters (e.g. pitchers) are unreliable and inconsistent and have low capacity. The water tank you use may be used up just as you need it.

In addition, users of such systems may prefer carbonated beverages. There are several methods to mix water and carbon dioxide (CO2) to make carbonated water. In one method, pressurized carbon dioxide (e.g., about 1000PSI) is released directly from a pressurized canister into a thin tube that delivers the carbon dioxide to a thin "injection straw" (about 3 mm ID). Carbon dioxide can escape from the bottom of the syringe through a small opening (about 200 microns) into a container filled with about 85% by volume water (i.e., 15% of the container's internal volume is "headspace"). The tip of the syringe through which carbon dioxide escapes is located just below the water level in the container. In this way, carbon dioxide is injected at a very high rate directly from the tip of the straw into the water to be carbonated. Such high-speed injection causes vigorous agitation of the water, thereby promoting mixing and dissolution of the injected carbon dioxide with the water, thereby generating carbonated water. Although the carbon dioxide is sprayed directly from the pressurized carbon dioxide tank into the water at high speed without any pressure regulation, the outlet orifice of the injection straw is small and the flow rate is slow, so that the container takes a certain amount of time to reach high pressure (about 3 seconds to 150 PSI). This extended mixing time allows the agitation and mixing of the liquid to continue for a sufficient time for adequate carbonation to occur. The restriction of the carbon dioxide flow rate by the injection straw also helps to increase the time required for the carbonation container to reach dangerous PSI levels, thereby allowing the use of a lower PSI grade carbonation container than the pressurized carbon dioxide tank storing carbon dioxide, despite the absence of a pressure regulator in the flow path therebetween.

The rate of carbon dioxide injection into the water in the carbonation vessel is high and is a method of physically propelling and mixing the water. However, the physical orientation of the injection straw with respect to the water is also important. By pointing down into the water, rather than from below or from the side up, such systems take advantage of the natural tendency of carbon dioxide gas to want to rise through the water (because carbon dioxide gas is lighter than water). Because of this natural tendency of carbon dioxide gas, injecting carbon dioxide down into water will result in approximately twice the contact time between the carbon dioxide bubbles and the water (i.e., on both the downward injection path and the upward buoyant path of the gas), and twice as much mixing as possible (i.e., the bubbles push the water along its downward and upward paths).

After the initial carbon dioxide injection, the pressure within the carbonation chamber increases (i.e., above the initial atmospheric pressure). This pressure also aids the carbonation process because it actually forces the carbon dioxide molecules into closer contact with water molecules. If the pressure in the carbonation vessel is reduced back to atmospheric pressure by opening a "pressure relief valve", some of the carbon dioxide dissolved in the water will immediately begin the process of separating from the water, thereby reducing the carbonation of the mixture. If such a pressure relief valve is left open indefinitely, then over time all of the carbon dioxide will escape from the water and the water will not carbonate anymore. A daily specification of this concept is that carbonated water will fade if it is left in an open bottle for a sufficiently long time. If all of the carbon dioxide is separated from the water and allowed to float to the atmosphere, either by repressurizing, re-stirring or cold storage of the carbonation vessel (or carbonated water bottle), the water cannot be re-carbonated because the carbon dioxide will no longer be re-mixed with the water.

This concept can be problematic for any long-term (hours or days) bottle of carbonated beverage, involving multiple openings and closings of the container (e.g., a typical carbonated water bottle). Each time the container lid is opened for drinking, carbon dioxide escaping from the water, and thus remaining in the "headspace" above the liquid level, can escape to the atmosphere through the upper opening of the container. This means that the carbon dioxide that accumulates in the headspace of the bottle is lost each time the bottle is opened and, as previously mentioned, any subsequent re-pressurisation, re-stirring or refrigeration of the bottle does not assist in returning any carbonation. Furthermore, even if the container is still capped, the closure is not perfectly sealed and, even if it is kept capped, the closure will continue to leak carbon dioxide slowly, ensuring that carbonated water placed in the bottle and manually sealed will inevitably lose carbonation over time. An imperfect solution used by some carbonated beverage users is to place the bottle in the refrigerator, inverting it, moving the non-gas-tight cap from the highest point of the bottle (where carbon dioxide gas will collect in the mouth space) to the lowest point, where only water will contact the cap (because the carbon dioxide floats upwards). This limits the loss of carbon dioxide to an amount that can only diffuse to the entire vessel wall.

There is a need for a beverage making device, system and method that can reproducibly flavor a beverage and increase the absorption of carbon dioxide in the liquid and/or allow the fluid to retain carbon dioxide at a higher rate than existing devices.

Disclosure of Invention

A system for dispensing a fluid is provided, the system comprising: a first fluid cassette comprising a first spout at a fluid outlet of the first fluid cassette for dispensing fluid; a second fluid cassette comprising a second spout at a fluid outlet of the second fluid cassette for dispensing fluid; and a docked position for docking a plurality of flow cassettes, wherein the first jet is adjacent to the second jet when the first flow cassette and the second flow cassette are both docked in the docked position.

In some embodiments, each flow cassette is wedge-shaped, and the first and second flow cassettes each taper to first and second fluid jets, respectively. The docking position may define a particular orientation of any docked cassette such that the spout of the respective cassette is in a designated position. This docking may be done by means of magnetic fixing points, which require a specific orientation.

The system may further comprise a droplet sensor for detecting the number of droplets dispensed from the first and second flow cassettes, wherein the spout dispenses droplets at a droplet detection location where droplets can be counted. The droplet sensor may be a capacitive sensor, and the first and second orifices may be located above the capacitive sensor and positioned such that droplets falling from the first and second orifices land on opposite sides of a capacitor of the capacitive sensor. In an alternative embodiment, a plurality of capacitive sensors may be provided corresponding to each flow cartridge at the docked position.

In some embodiments, the drop sensor may be a laser sensor or a reflective sensor.

The first and second flow cassettes may each further comprise a machine readable element for identifying the contents of the flow cassette, and wherein the docking location comprises a reader for the machine readable element. The system can include processing circuitry for dispensing fluid from a plurality of flow cassettes based on a recipe, which can be provided or can come from memory, and the contents of the machine readable element.

A flow cartridge can be provided, the flow cartridge comprising: a cassette housing for holding fluid to a fluid fill level; a fluid inlet; a liquid outlet above the fluid fill level; and a siphon for delivering fluid within the fluid cassette below a fluid fill level to the fluid outlet, wherein application of pressure at the fluid inlet causes fluid from the fluid cassette to be dispensed at the fluid outlet.

The siphon may be deconstructed and may include a first surface having a first surface groove and a second surface for engaging the first surface, wherein the first surface groove and the second surface combine to form the siphon when the first surface is pressed against the second surface. In some embodiments, the second surface may be provided with a second surface groove such that when the first surface is pressed against the second surface, the first and second surface grooves combine to form the siphon.

The first and second surfaces may be planar or they may be curved surfaces, and the first surface may be an extension of the cover of the housing and the second surface may be an inner surface of the housing of the flow cassette. The cover may be pressed against the housing by a magnetic closure.

The flow cassette may further include an anti-siphon applied to the fluid inlet such that the fluid inlet is below a liquid level within the housing, and the anti-siphon directs pressure from the fluid inlet above the fluid fill level.

The siphon may comprise a generally U-shaped bend and the fluid outlet may face downwardly. The spout may include a downwardly curved channel and may be located at a first corner of the flow cassette such that the flow cassette is wedge-shaped and tapers towards the first corner.

The flow cartridge may further include a machine readable element, which may be user programmable or encodable.

Providing a system for making a customized beverage may also carbonate the fluid, and may include: a gas supply device; a fluid container; a holder for holding the fluid container relative to the gas supply; and a gas injector for injecting gas from the gas supply into the fluid container. During use, the gas injector may inject gas below the liquid level within the fluid container. The fluid container may include at least one inner surface for blocking the path of the gas back to the upper surface of the fluid after injection.

The inner surface may be a helical path adjacent an outer wall of the fluid container, and may further comprise a surface agitator on a lower surface of the path for redirecting fluid traveling along the helical path.

Alternatively, the inner surface may be an annular flange below the liquid level, such that the annular flange redirects the gas downward as it rises toward the upper surface of the fluid.

The annular flange may be concave so as to retain gas, and the surface may be reticulated or perforated so that gas trapped at the flange may contact fluid above and below the flange. In some embodiments, the flange may be fixed to the gas injector, and in some embodiments, may branch into multiple inner surfaces.

The fluid container may further comprise a gas agitator for breaking up gas bubbles into smaller gas bubbles. The agitator may be a grid below the liquid level of the fluid vessel such that the injected gas passes through the grid. The agitator may also be an object with an attachment or an irregularly shaped object within the fluid container.

The gas injector may be held at a holder such that the nozzle moves relative to the holder during gas injection. This movement may be caused by an offset hole in the nozzle which may then be pushed by the gas. The holder may use a pivotal connection or a reed structure to create motion or vibration during carbon dioxide injection.

The gas supply device may include: a gas storage tank; a gas outlet for delivering gas from the gas reservoir to the fluid container; a flexible tube having a first end at the gas outlet and extending into the gas reservoir; and a float for suspending the second end of the flexible tube within the gas tank.

There is provided a bottle for carbonated beverages, the bottle comprising: a container for containing a carbonated beverage; a removable cover; and at least one inner surface for blocking the path of the carbonation gas within the bottle to the removable cap.

The inner surface may be a downwardly facing surface extending from an inner wall of the container, and the downwardly facing surface may collect carbonation gas rising in the carbonated beverage. The downwardly facing surface may have a reticulated upper surface such that the collected carbonation gas is exposed to the fluid above the downwardly facing surface. The downwardly facing surface may be concave or may be a mesh element submerged below the surface element to capture carbonated gas separated from the carbonated beverage.

The bottle may include a bottom surface on which the bottle body rests, and an upper surface independent of the removable cap, wherein the inner surface is the upper surface and a carbonation gas collects near the upper surface, and wherein the removable cap is below a surface level of the carbonated beverage when the bottle is substantially full and rests on the bottom surface.

There is also provided a method of carbonating a fluid, the method comprising: providing a fluid container for carbonated fluid; substantially filling the fluid container with a fluid; injecting at least a first dispense of a carbonation gas into the fluid within the container; maintaining an elevated pressure within the fluid container such that the carbonation gas is absorbed into the fluid; detecting a user indication indicating that a carbonation level of a carbonated fluid is higher than the carbonation level at the time of the user indication; injecting at least one additional dispense of a carbonation gas into the fluid within the vessel; and dispensing the fluid to a user. The at least first dispense may be three dispenses and the high pressure may be greater than 150 PSI.

In some embodiments, the method further comprises releasing excess carbonation gas from the fluid container prior to dispensing the fluid to the user. In some embodiments, the method may further comprise releasing excess carbonated gas to an exterior space of the fluid container after receiving the user indication and before injecting the at least one additional dispense.

In some embodiments, the method may determine the current carbonation level of the fluid at the time of the user indication based on a wait time between at least the first dispense and the user indication.

In some embodiments, there is provided a fluid delivery system comprising: at least one pressurized fluid conduit; a pressure or fluid source for providing a pressure or fluid flow at the at least one pressurized fluid conduit; at least one auxiliary container having an inlet and an outlet; and a controllable valve associated with the at least one auxiliary container, wherein the pressurized fluid conduit is in communication with an inlet or outlet of the at least one auxiliary container when the respective controllable valve is open, and wherein the controllable valve determines whether the auxiliary container is exposed to pressure or fluid flow.

Many variations and further embodiments of the device will become apparent from the drawings and detailed description set forth herein.

Drawings

FIG. 1 is a block diagram of a customized beverage making device;

FIG. 2 is a perspective view of a customized beverage making device implementing the features of FIG. 1;

FIG. 3 is a perspective view of the device of FIG. 2 with the housing removed;

4A-C are perspective views of three embodiments of a customized beverage making device;

FIG. 5 is a close-up view of an additive cartridge incorporated into the customized beverage making device of FIG. 4A;

FIG. 6 is a schematic view of an embodiment of a pump for dispensing additive from an additive cartridge into a beverage produced by the customized beverage making device of FIG. 1;

FIG. 7 shows a perspective view of an additive cartridge dispensing additive in the context of the device of FIG. 1;

FIG. 8 shows a perspective view of an additive cartridge dispensing additive in the context of the second embodiment of the device of FIG. 1;

FIGS. 9A-H illustrate variations of the embodiment of FIG. 8;

FIG. 10 shows a schematic view of a second pump embodiment for dispensing an additive in the context of the device of FIG. 1;

FIG. 11 shows a simplified schematic diagram of a variation of the pump embodiment of FIG. 10;

12A-D illustrate various steps in a cleaning protocol for the pump embodiment of FIGS. 10 and 11;

FIG. 13 shows a schematic view of a filter that may be used in the device of FIG. 1;

FIG. 14A shows a schematic view of a water supply connector for the device of FIG. 1;

FIG. 14B shows a perspective view of an embodiment of the water source connector of FIG. 14A;

FIGS. 15A and 15B illustrate a carbonation container for use with the apparatus of FIG. 1;

FIG. 16 illustrates surface features of a portion of the carbonation vessel of FIG. 15A;

FIG. 17 shows an alternative embodiment of a carbonation vessel for use with the apparatus of FIG. 1;

FIG. 18 shows an alternative embodiment of a carbonation vessel for use with the apparatus of FIG. 1;

FIG. 19 shows an alternative embodiment of a carbonation vessel for use with the apparatus of FIG. 1;

FIGS. 20A-B illustrate an alternative embodiment of a carbonation container for use with the apparatus of FIG. 1;

FIG. 20C shows an insert in a carbonation container for use with the device of FIG. 1;

figure 21 shows a nozzle for use in the carbonation module of the apparatus of figure 1;

FIG. 22 illustrates additional features used in a carbonation vessel used with the apparatus of FIG. 1;

FIG. 23 shows a storage container for storing carbonated beverages for use with the apparatus of FIG. 1;

FIG. 24 shows an alternative embodiment of a storage container for storing carbonated beverages for use with the apparatus of FIG. 1;

figure 25 shows a gas canister for use in the apparatus of figure 1;

FIG. 26A shows a block diagram of a carbonation container and valve system for use in the apparatus of FIG. 1;

fig. 26B shows a flow chart illustrating a method for carbonating a fluid;

27A and 27B illustrate a level detector used in a beverage container in two states;

28A and 28B illustrate an alternative embodiment of a level detector for use in a beverage container in two states;

FIGS. 29A and 29B illustrate an alternative embodiment of a level detector for use in a beverage container in two states;

FIGS. 30A and 30B illustrate an alternative embodiment of a level detector for use in a beverage container in two states;

31A and 31B illustrate an alternative embodiment of a level detector for use in a beverage container in two states;

FIG. 32 is a flow chart illustrating a method of delivering fluid to a container using the apparatus of FIG. 1;

FIG. 33A is a perspective view of an alternative embodiment of a customized beverage making device including a storage module for an additive cartridge;

FIG. 33B is another perspective view of the customized beverage making device of FIG. 33A including a shelf for shorter beverage containers;

FIG. 34A is a perspective view of an alternative embodiment of a customized beverage making device including different storage modules for additive cartridges;

FIG. 34B is a perspective view of the customized beverage making device of FIG. 34A, showing the removable front panel removed;

FIG. 34C is a rear perspective view of the customized beverage making device of FIG. 34A including a water tank for storing water;

FIG. 34D is a rear perspective view of the customized beverage making device of FIG. 34A including two water tanks for storing water;

FIG. 35A is a perspective view of an alternative embodiment of a customized beverage making device showing an installed additive cartridge;

FIG. 35B is a rear perspective view of the customized beverage making device of FIG. 35A including an optional storage module for an additive cartridge and a water tank for storing water;

FIG. 36 is a perspective view of an alternative embodiment of a customized beverage making device showing a plurality of additive cartridges installed and including a storage module for attaching the additive cartridges;

FIG. 37 is a storage module for an additional additive cartridge for use with the device of FIG. 1;

FIGS. 38A-B are embodiments of an additive cartridge for use with the device of FIG. 1;

39A-C illustrate an alternative embodiment of an additive cartridge for use with the device of FIG. 1;

FIG. 40 shows a schematic view of a takeoff pipe for the additive cartridge of FIGS. 38 and 39A-C;

FIGS. 41A-D show a pumping process for removing the contents of the additive cartridge from the output tube;

FIG. 42 shows an alternative embodiment of a takeoff pipe for use in the case of the additive cartridge shown in FIGS. 38 and 39A-C;

43A-D illustrate one advantage of the embodiment of FIG. 42 relative to the embodiment of FIG. 40;

44A, 44B, and 44C show views of an embodiment of an additive cartridge according to the present disclosure;

45A and 45B show views of an embodiment of an additive cartridge according to the present disclosure;

FIGS. 46A and 46B show components of an deconstructed siphon tube for use in a cartridge for use with the device of FIG. 1;

FIGS. 47A-B should incorporate the deconstructed (deconstructed) siphon of FIGS. 46A-B in an additive cartridge;

FIG. 48 shows a magnetic seal used with a cartridge;

FIGS. 49A-B illustrate an alternative embodiment of a magnetic seal for use with a cartridge;

FIGS. 50A-50B illustrate magnetic elements for refilling a cartridge;

FIG. 51 shows a rack assembly for refilling a cassette;

52A-B illustrate an assembly for counting droplets dispensed from a cartridge;

FIGS. 53A-D illustrate a cartridge for use in the assembly of FIGS. 52A-B;

FIG. 54 shows a top view of a plurality of cassettes in the assembly of FIGS. 52A-B;

FIG. 55 shows the use of a drop sensor in the view of FIG. 54;

FIGS. 56-57 illustrate a plurality of cassettes in docked positions for use in the device of FIG. 1;

FIGS. 58-59 illustrate an alternative embodiment of a drop sensor for use in the device of FIG. 1;

FIGS. 60A-B illustrate a capacitive drop sensor for use in the device of FIG. 1;

FIG. 60C illustrates an example of data collected from the capacitive drop sensor shown in FIGS. 60A-B;

FIGS. 61A-B illustrate two implementations of the capacitive drop sensor of FIGS. 60A-B into the device of FIG. 1.

Detailed Description

The description of illustrative embodiments in accordance with the principles of the invention is intended to be read in connection with the accompanying drawings, which are to be considered part of the entire written description. In describing the embodiments of the invention disclosed herein, any reference to direction or orientation is made for convenience of description only and is not intended to limit the scope of the invention in any way. Relative terms such as "lower," "upper," "horizontal," "vertical," "above," "below," "upper," "lower," "top" and "bottom," as well as derivatives thereof (e.g., "horizontally," "downwardly," "upwardly," etc.) should be construed to refer to the orientation as then described or as shown in the drawing under discussion. These relative terms are for convenience of description only and do not require that the apparatus be constructed or operated in a particular orientation unless otherwise specifically stated. Terms such as "attached," "connected," "coupled," "interconnected," and the like refer to a relationship wherein structures are secured or connected together, either directly or indirectly through intervening structures, as well as both movable or rigid connections or relationships, unless expressly described otherwise. Furthermore, the features and advantages of the present invention are explained with reference to exemplary embodiments. Thus, the present invention should not be explicitly limited to such exemplary embodiments, which illustrate some possible non-limiting combinations of features that may exist alone or in other combinations of features; the scope of the invention is defined by the claims appended hereto.

The instant disclosure describes one or more of the best modes presently contemplated for carrying out the invention. The description is not intended to be construed in a limiting sense, but rather provides examples of the invention, which are presented for purposes of illustration only by reference to the figures, so as to suggest themselves to those skilled in the art the advantages and construction of the invention. Like reference numerals designate like or similar parts throughout the various views of the drawings.

Fig. 1 is a block diagram of a customized beverage making device 100, fig. 2 is a perspective view of the device with a housing 105 in place, and fig. 3 shows the device with the housing removed. Fig. 4A-C are perspective views of three embodiments of the customized beverage making device 100 showing the cover in place. As shown, the customized beverage making device generally includes a filtration module 200, a carbonation module 210, a flavor addition module 220, and an automatic refill module 230. Each of these modules will be discussed in more detail below.

The entire device may be controlled by appropriate circuitry, including a microcontroller, to control the sequence and coordination of events in the operation of the device 100. Such circuitry may include memory for retaining programs for operating device 100 and recipes for forming beverages, as described below.

The flavor addition module 220 includes an additive cartridge 110, sometimes referred to herein as a "syrup chamber," and a pump 120 or pump system for pumping the additive from the additive cartridge 110. The carbonation module 210 includes a carbonation tank 130 and a carbonation vessel 140, and the filtration module 200 includes a water filter 150 and a water source 160. The illustrated apparatus produces a customized beverage, which is then placed into an external beverage container 170, such as a cup or bottle, which the user may select, and refilling may be initiated by the automatic refill module 230.

It will be understood that while embodiments of the full features are shown and described, a beverage making device 100 according to the present disclosure may be provided with only one or a few of the modules shown or described. Thus, while the following description is in the context of an apparatus 100 having the various modules described, a separate additive dispensing system may be provided to allow a user to add customized amounts of the various additives (typically in the form of syrups) to a solution to make a customized beverage.

For example, the system will typically include only the flavor addition module 220, thereby including the air pump 120, which air pump 120 pumps air into one or more of the cassettes 110. Air pumped into the cartridge 110 pushes the additive out of the cartridge and into the user's beverage.

Such systems may be mounted on a rack or attached to a ferromagnetic surface by magnets, such as a refrigerator door, and may be powered from a wall outlet or by batteries.

The dispensed amount of additive in each cartridge 110 can be carefully monitored using any of the methods described in more detail below, allowing the user to have a high degree of control over the precise amount of additive dispensed and a high resolution control over the mixing ratio between the additives extracted from the plurality of cartridges 110. In this manner, the stand-alone device carrier may allow for the replication of known beverages or user-designed recipes using a particular user-specified or software-based recipe.

As shown in fig. 2 and 5, the additive cartridge 110 may be mounted in a docking position on the front surface of the housing 105, among other things, and the display 240 may be included in the housing. The display may be, for example, a touch screen for implementing the control device 100. As shown in fig. 3, the housing 105 may include a front panel 250 that displays an aesthetic design. Such panels 250 may be removable and replaceable with different designs. A wide variety of docking positions may be implemented, several of which are shown and described below.

FIG. 5 is a close-up view of a plurality of additive cartridges 110a, b incorporated into the customized beverage making device 100 of the embodiment shown in FIG. 4A. During use, the pumping system 120 extracts the additive, typically in the form of syrup, from the additive cartridge 110 and deposits it into the outer beverage container 170 as part of the customized beverage produced by the device 100.

Fig. 6 is a schematic diagram of the flavoring addition module 220 of fig. 1. As shown, the module includes a pump 630, the pump 630 for dispensing the additive in the additive cartridges 110a, b into the beverage as part of the fluid delivery system of the customized beverage making device 100 of fig. 1.

Typically, the machine 100 will be able to deliver a concentrated additive solution from an additive cartridge 110 (sometimes referred to herein as a "pod") into water to make a customized beverage. It will also be understood that in some places the additive is referred to as "syrup" and that although the additive is syrup in the exemplary embodiment, it can be any additive, including powders or liquids with appropriate modifications to the mechanism. For example, in some embodiments, the additive may be provided in powder form, and water may be added to the cartridge to form a syrup prior to first use.

Thus, the cartridge 110 can also dispense powder-based additives (in addition to aqueous additives). This can be accomplished by having the machine or consumer add water to the cartridge 110, thereby dissolving it and converting it to an aqueous form, which can then be dispensed by the previous methods described above. This is achieved for the device 100 by simply adding a water input line to the cartridge itself, which can be done in the same way as the air input line, through a dedicated port, or through the same port used for air.

Pumping of syrup from the additive cartridge 110 can be accomplished by using a pump 630, typically an air pump, such as a diaphragm pump or peristaltic pump, to pump the syrup from the cartridge into the container. This may be accomplished by pressurizing the air within the cartridge, thereby displacing the additive solution from the chamber and into the user's container. To enable one pump to control the flow of syrup from several different additive cartridges 110a, b, the pump may be connected to the additive cartridges via a Y-connector 635 via a pressurized conduit (e.g., tubing) that splits into separate pressurized conduits for each additive cartridge, e.g., conduits 600a, b. Between the pump 630 and each cassette 110a, b is a controllable valve 640a, b, which may be a solenoid valve, a servo pinch valve, or the like. By selectively opening and closing these valves 640a, b, the device 100 and system can thus direct the action of the pump 630 to each additive cartridge 110a, b as desired. By pumping air into the additive cartridge 110, the pump 630 can push syrup out of the cartridge through the output tubes 650a, 650b and into the beverage mix. At the same time, syrup can be drawn back into the cassettes from the output tubes 650a, b by pumping air back from the additive cassettes 110a, b.

Further, although a takeoff tube 650 is shown, some embodiments do not incorporate a takeoff tube, and the additive may be output directly from the cartridge's output port. These implementations are discussed in detail below. Re-aspirating syrup or any other additives back into the cartridge 110 prevents unwanted dripping from the output port or tube 650 of the cartridge.

As shown, the fluid delivery system has at least one pressurized conduit 600, which is connected to the additive cassettes 110a, b as shown. The air pressure in the pressurized conduit 600 may then be applied to the inlets 610a, b of the respective additive cartridges 110a, b in order to force the contents of the respective additive cartridges out through the outlets 620a, b.

In some embodiments, the pressurized conduit 600 is maintained pressurized and a controllable valve 640 is provided in association with the additive cartridge 110 to control whether the cartridge should be exposed to the pressure of the conduit 600. In other embodiments, the conduit 600 is pressurized by a pump 630 as needed to force the contents out of the associated additive cartridge 110.

In some embodiments, such as shown in FIG. 6, a plurality of additive cartridges 110a, b are provided, each typically providing a different additive. In such embodiments, the pressurization conduit 600 may be divided into a plurality of conduits 600a, b, each corresponding to a single additive cartridge 110a, b. In such an embodiment, each additive cartridge 110a, b may be provided with a corresponding controllable valve 640a, b, such that these valves may be used to determine which additive cartridge 110a, b is exposed to the pressure in the corresponding conduit 600a, b. In some alternative embodiments, instead of a single pump pressurizing all cassettes 110a, b through valves 640a, b as shown, a single pump may be paired with each cassette.

The additive cartridges 110a, b may contain the minerals, flavors or colorants of the beverage, as well as other possible additives, typically in the form of some concentrate, such as syrup. Typically, when multiple cartridges 110a, b are provided, the valves 640a, b may be opened simultaneously or sequentially to add precise amounts of additives from each cartridge to make a customized beverage. In this manner, the device 100 can incorporate, for example, flavorings from one cartridge 110a and minerals from another cartridge 110 b. In addition, the valves 640a, b may be calibrated to allow for precise application of the additive to the beverage, such as by being partially open or open within a precise amount of time. In some embodiments, multiple identical additive cartridges 110 may be incorporated in order to increase the rate at which additive is deposited into the beverage.

While the exact amount of syrup dispensed can be tracked by determining how much fluid is pumped into the cassette 110, the amount of syrup dispensed can also be tracked by determining how much syrup or drops of syrup have been dispensed from the cassette. Discussed in more detail below with reference to fig. 52A-49.

In some embodiments, the additive cartridges 110a, b may have a variety of user-selectable options, such as different beverage flavors, colors, or other additives. The additive cartridges 110a, b may then be encoded with recipes, instructions, or general information readable by the device 100 that specify the amount of syrup needed for a particular beverage, the viscosity of the contained syrup, and/or other details relating to the contents of the cartridges.

As shown in fig. 6, the outlet 620 of each additive cartridge can be connected to an output tube 650a, b, in such a way that the output tubes 650a, b can deliver the additive to an additive output of the device 100, such as a glass or bottle filling position or a fluid mixing position.

Fig. 7 shows a perspective view of an additive cartridge 110 dispensing additive in the context of the device of fig. 1. As shown, the additive cartridge 110 may be mounted directly above the additive output position of the device 100 such that the additive is output directly to a drinking container, such as a beverage bottle 700.

Accordingly, the takeoff pipe may also be eliminated altogether in order to prevent any need to clean the "takeoff pipe". If the additive cartridge 110 is docked on the machine with the outlet 620 of the cartridge directly above the user's drinking vessel 700, syrup can be output from the cartridge 110 directly into the drinking vessel without the need to transport the syrup horizontally through a conduit. Thus, when the additive cartridge 110 is removed from the machine, there are no remaining parts of the machine that are in physical contact with the syrup in any manner. This is advantageous because the cartridge 110 is generally easier to clean than the rest of the machine, for example, placing it in a dishwasher. Other features that facilitate cleaning of the cartridge 110 are discussed in more detail below.

Fig. 8 shows a perspective view of an additive cartridge 110 dispensing an additive in the context of the second embodiment of the device 100 of fig. 1. As shown, instead of depositing the additive directly into the beverage bottle, the apparatus 100 deposits the additive into the fluid stream 800. For example, the fluid flow 800 may be water obtained from a water source or other internal module of the apparatus 100.

The fluid flow 800 may be provided in a conduit 810 having an open top, or may be an oversized closed conduit, such that the fluid flow only partially fills the conduit. In this manner, the additive cartridge 110 can deposit additive into the fluid stream without the additive cartridge outlet 620 contacting the fluid stream.

The conduit 810 may then deliver the fluid flow 800 including the additive to the bottle 700 or other drinking vessel of the user.

Thus, if the additive cartridge 110 does not rest directly above the user's drinking vessel, horizontal transport of syrup can be achieved in a manner that can immediately dilute the syrup to the point where it does not leave a residue on any machine component. This may be accomplished by flowing an open-topped "water stream" of water 800 under the outlet 620 of the additive cartridge 110. By allowing the syrup to drip from the air into the "water stream" flowing beneath it, any potential backflow of water into the cassette 110 is avoided. Such backflow is undesirable because it can result in uncontrolled and undesirable dilution of the syrup in the additive cartridge 110.

Fig. 9A-9C show a variation of the embodiment of fig. 8, wherein 9C shows a close-up view of the angled water flow mechanism. As shown, the conduit 810 may be disposed outside of the housing 105 of the device 100 such that the additive and fluid base, such as water, fall into the conduit before the conduit delivers the fluid to the bottles 700a, b or other drinking containers. As shown, the conduit 810 may be angled to adjust the steepness of the conduit to adjust fluid flow or for different sized filled containers. Further, the conduit 810 may be angled in different directions to provide fluid to a plurality of different containers 700a, b at the filling locations 900a, b.

Thus, for ease of use, it would be useful to allow a user of the machine to position two empty bottles 700a, b under the machine and have the machine 100 automatically fill both bottles. In this way, the user can leave two empty bottles 700a, b and return to take them away when they are both full, rather than waiting for the machine 100 to fill a single bottle 700a, then replace the filled bottle with another empty bottle 700b, and then wait for that bottle to be full. To enable the "water stream" filling the system to accomplish this task with a minimum of additional electromechanical components, we discuss several possible mechanisms.

The first is the "angled water flow" mechanism shown in FIGS. 9A-9C, in which there is an open-topped (or closed-topped in other embodiments) channel 810, which channel 810 can be angled like a seesaw. The tilt may be electromechanically actuated, or may be manually actuated by a user. By tilting like a seesaw, the "tilted stream" can be tilted to one side to fill one bottle 700a of a user and then tilted to the other side to fill the other bottle 700B of the user, as shown in FIGS. 9A and 9B.

The ability of the water flow 810 to be tilted (manually or electromechanically) will also allow for user containers 700a, b of different heights to be placed under and easily filled by the mechanism, as the water flow may be tilted downward to contact the mouths of bottles of different heights.

Alternatively, as shown in FIGS. 9D-9F, instead of tilting the water stream 810 from side to side, the water stream may be rotated. We refer to this as a "rotating water flow" mechanism. Such a mechanism would allow two or more consumer containers 800a, b to be filled by rotating from the position of the lip of one container to the position of the lip of another container. The mechanism can also be used in combination with an "inclined water flow" mechanism to further increase the speed of the multi-container filling time, and also to facilitate filling of containers of different heights.

Alternatively, as shown in fig. 9G-H, the water flow may be split into two or more branches 820a, b, all of which, or all but one of which, may be blocked by an electrically actuated plug 830 (a "dam" wall, etc.). By opening/closing these plugs, one will choose to fill one or more bottles 800a, b with the same beverage at the same time (i.e. one beverage output stream is divided into more than one "stream").

Finally, all of the "water flow" output mechanisms shown in FIGS. 9A-H may be removable, such that a user may choose to purchase the device 100 with or without the water flow 810, but this function may be added later, if desired. In addition, the lengths of these streams may vary, so that longer streams will extend laterally out of the arch of the device 100, beyond the vertical front surface of the machine. This would then allow the user to use the machine to pour the beverage into the user's container, which is too large to be physically contained within the 100 arches of the device.

Fig. 10 shows a schematic view of a second pump embodiment for dispensing an additive in the context of the device of fig. 1, and fig. 11 shows a simplified schematic view of a variant of the pump embodiment of fig. 10. As shown, the pump 1000 may be disposed on the pressurized conduit 1010 at the outlet 1020 of the additive cartridge 110. In such embodiments, the pump 1000 creates a negative pressure or suction in the pressurized conduit 1010 to draw the contents of the additive cartridge 110 into the pressurized conduit. Further, once syrup from the additive cartridge 110 is drawn out of the outlet 1020, the pump 1000 will pump syrup instead of air.

In such embodiments, as described above, a valve may be provided as part of the extraction mechanism 1030 associated with the additive cartridge 110 to prevent the cartridge from dispensing additive into the pressurized conduit 1010 unless such dispensing is intended. Such a valve may be provided between the pump 1000 and the outlet 1020 to prevent exposure of the pump to the negative pressure of the pressurization conduit 1010. Alternatively, a valve may be provided at the inlet such that opening the controllable valve 1020 allows ambient air to displace the fluid in the additive cartridge 110 so that additive may be drawn into the pressurized conduit 1010.

It would be useful to be able to clean all of the tubes that come into contact with the syrup in the chamber, such as the output conduit 1010 inside the machine, after the syrup cassette 110 is emptied, or between uses. This would allow the user to replace an empty chamber 110 with a new chamber containing a different syrup without having to mix the new syrup with the residue of the old syrup in the conduit 1010. Such a cleaning scheme also helps to ensure that hygiene is maintained in the conduit 1010.

Fig. 12A-12D illustrate various steps in a cleaning protocol for the pump 1000 embodiment of fig. 10 and 11. As shown, the pump 1000 may be configured to reverse fluid flow to facilitate cleaning of the pressurized fluid conduit and any other surfaces that may come into contact with the additive. As shown, in one of the steps of the cleaning protocol, the cleaning valve 1200 may be opened to provide access to the water source 1210 and water may be drawn from the water source into the additive cartridge 110. Water may then be drawn from the additive cartridge 110 into the pressurized conduit 1010 to clean the conduit. The pump direction can then be reversed to return the water to the additive cartridge 110 for removal by the user. The additive cartridge can then be discarded or emptied and ready for reuse.

Thus, a valve 1200 may be installed that allows water from the water source 1210 to instantaneously flow into the empty syrup compartment 110. Once the cartridge 110 is filled with purified water, the pump can push/pull water out of the cartridge and throughout the entire length of tubing 1010 that has previously been in contact with the syrup in the cartridge. By pumping water back and forth within the conduit 1010, more thorough cleaning of the conduit may be facilitated. The pump 1000 can then deliver this water (which may now be mixed with syrup residue in the clean tubing) back to the cassette 110, where it can be removed by the user and refilled, recycled, or disposed of.

Alternatively, when all of the syrup in the cartridge 110 is used up, the user can remove the cartridge and replace it with another cartridge filled with cleaning solution. The pump 1000 can remove the cleaning solution from the cassette 110 and into all of the tubes 1010 previously in contact with the syrup in the previous cassette. The pump can then pump the cleaning solution back into the cartridge 110, allowing the user to remove the cleaning solution cartridge 110.

In some embodiments, instead of providing a replacement pod or cartridge 110 containing a cleaning solution, a user can use an external container containing a cleaning solution. Such a container may be applied at the outlet of the device 100 when the pump is running in reverse, so that cleaning liquid is pumped into the conduit 1010 into the cartridge 110 for cleaning.

In some embodiments, such cleaning solutions in the additive cartridge 110 can also be used to clean bottles. Alternatively, or in addition to such an embodiment, the device 100 may also include a bottle cleaning solution. For example, if a user places bottle 700 under the output spout of machine 100 or under a dedicated "bottle cleaning position," the machine may clean the bottle by UV LEDs (emitting light in the 254nm wavelength range, known to have good sterilization performance) and/or by a high pressure water jet system. The water spray may be combined with cleaning liquid deployed from a "syrup cassette" that is dedicated to containing cleaning liquid rather than syrup.

Fig. 13 shows a schematic view of a filter that may be used as part of the filtration module 200 in the apparatus of fig. 1. Fig. 14A shows a schematic diagram of a water source connector 1300 for use in the filtration module 200, and fig. 14B shows a perspective view of one embodiment of the water source connector 1300 of fig. 14A.

There are many types of filters on the market, each of which can filter out a different subset of contaminants from water. The apparatus 100 may have a "customizable filter" system that will allow multiple types of filters to be "plugged" into the machine so that the machine's influent will pass through them in sequence. Unused filter ports will only let water flow through them.

As shown, a fluid source, such as a water source connector 1300 connected to a faucet 1305, is provided to provide a flow of fluid in a fluid flow conduit 1310. The fluid source connector 1300 may be connected to a user's kitchen faucet 1305, a user's water hose, or a dedicated water hose installed for the device 100. The water fed to the apparatus 100 is then fed to the water filter 150.

As shown, the filter 150 may include multiple sections, each section providing different filtering characteristics, and may result in water having different compositions. Thus, a single filter 150 or filter housing may include several different filter segments, each of which may be independently removed, replaced, exchanged, or activated to change the filtering characteristics of the device 100.

To implement a custom filter, certain segments of filter 150 may be activated and certain segments may be removed or bypassed. In such an embodiment, each filter segment may be provided with, for example, a controllable valve for determining whether water from the fluid source 1300 should enter that particular filter segment. In some embodiments, the water may be filtered by a custom filter of several filters. In such an embodiment, the water may be directed through a controllable valve to a complete filter. In other embodiments, the water may be filtered by portions of the custom filter. In such an embodiment, each filter segment will have an independent valve, and the filter segments are arranged in series such that water from the outlet of a first filter segment next encounters a controllable valve at the inlet of the next filter segment, and such that any fluid that bypasses the first filter segment will also next encounter the controllable valve at the inlet of the next filter segment.

Each filter segment may be, for example, a large particle filter, a particulate or solid bulk carbon filter, a microfiltration membrane, a nanofiltration membrane, and the like. It will be noted that although the present disclosure discusses a carbonation method, the user may still dispense still water immediately after the filtration process. Thus, a still water dispensing solenoid (solenoid) can be used as a valve to release filtered still water directly to the output of the device.

The device 100 may be connected to the user's water supply in a variety of ways, for example, as described above, by a connector 1300 at the output of the user's kitchen sink faucet 1305, or by splicing into the water supply line of a kitchen sink below the sink. If connected to the output of the sink faucet 1305, it may be desirable to allow the user to take water from the sink faucet as usual, while also allowing the machine to take water from the sink faucet when desired. To achieve these objectives, a "Y-splitter" may be used which allows water to flow down into the sink, and also to the machine. In order to allow the machine to take water from the sink tap when required, it is necessary for the user to keep the knob of the kitchen sink in the "on" position all the time so that water can reach the output of the sink tap, i.e. the junction of the Y-shaped diverter. Due to the "always on" requirement of the sink knob by the user, it may be necessary to introduce an auxiliary valve in the waterway of the sink faucet so that the user can still turn on and off the flow of water from the sink faucet into the sink. The auxiliary valve may be a manual knob/valve, or an electronically controlled valve. The electronically controlled valves may be controlled by manual buttons or a touch screen, or by hand in the vicinity of a sensor (e.g., an infrared or sonar proximity sensor).

Finally, another option for allowing the machine to obtain a water supply is to have the device 100 own water tank that can be easily refilled with water from a sink faucet, either by manually transporting the tank under the faucet, or by a telescoping tube with a funnel at its end that can be pulled out of the machine and placed under the faucet.

In such an embodiment, a standard under sink mounted diverter may be provided on the cold or hot water line (relative to the water temperature required by the device), the diverter being connected to a filter which is connected to a long coiled hose which terminates in a manually or electronically controlled valve. With such a system, whenever it is desired to refill the tank of the counter top device, the user can disconnect the hose from under the sink, extend its end into the tank of the machine, and then activate the valve at the end of the hose to allow water to flow into the tank to refill it.

In addition, many kitchen appliances require the use of water in a particular temperature range. For example, a refrigerator may only require cold water to perform the necessary functions. However, it is not always convenient or possible for a user to install a conventional under sink shunt hose from a hot or cold water pipe or to drill a hole in a countertop to install the hose. Thus, a valve device may be provided which is connected to a hot or cold water tap knob, allowing for diversion at that point rather than under the counter.

Thus, water can be drawn from an under-sink tee that is spliced to a user water supply line, an accessory water tank, or a faucet connected to a tee. Any of these mechanisms may further employ a water pressure regulator.

The refill station may be powered by a standard outlet power adapter or by an on-board rechargeable battery (e.g., lead-acid battery). The battery may be charged by connecting to a charging circuit connected to an electrical outlet and/or by drawing power from water turbine 1400 and/or a carbon dioxide gas turbine. Hydro turbine 1400 may be mounted at any location along the water flow path through the machine components. The optimal positioning would be at the point of first contact with the user's home water supply (e.g., the sink head, or any other point of integration with the user's water supply) so that it will generate electricity (i.e., water will flow through it) both when the user commands water to be poured into their sink (blue arrow) and when the machine commands water to flow through their pipes (red arrow). An electrical cord may connect the turbine to the machine's battery along the path of the machine's water line. Also, the carbon dioxide gas turbine may be located somewhere in the gas path from the compressed carbon dioxide tank of the machine to the carbonation tank of the machine so that when carbon dioxide gas is injected into the carbonation tank to carbonate the water, it generates electricity. In some embodiments, instead of using a turbine, solar energy may be used to power the refill station and other components of the device.

The device 100 may be equipped with a processor and software may be used to track carbon dioxide usage, water filter usage and syrup usage so that it may provide updates to the user when these are running out. Each can be tracked by the amount of time the machine's respective actuator (e.g., carbon dioxide dispensing servo motor, water inlet valve, peristaltic syrup pump) pod is activated since the machine was inserted from a new carbon dioxide tank, water filter, or syrup pod. When a new carbon dioxide tank, water filter or syrup tank is inserted, the user will notify the machine by clicking a button in the machine application or pressing a button on the machine itself, or the device 100 can detect that a new or refilled component is installed.

The amount of carbon dioxide remaining in the compressed carbon dioxide storage tank to which the apparatus is connected can be estimated by the amount of time required for the carbonation tank to reach a certain pressure (e.g., 150PSI) after activating the pin valve of the compressed carbon dioxide tank. This amount of time is a function of the flow rate of carbon dioxide from the tank into the carbonation tank and also a function of the pressure remaining in the compressed carbon dioxide tank. In some embodiments, the amount of additive remaining in the cartridge 110 can be determined by a capacitive sensor. Alternatively, the device 100 can track the amount of fluid remaining in the cartridge 110 by using any of the tracking mechanisms or methods discussed elsewhere herein.

In some embodiments, the apparatus 100 may also include a cooling and/or heating module that leads to the machine inlet. These modules connect a sink mounted between the machine and the user to the user's household water line.

To facilitate proper positioning of the water bottle below the output spout of the device 100, the device may have a laser, or a beam of light shines down from the center of the output spout, or up to the center of the output spout. Alternatively, the dip tube for the device 100 may be provided with concentric circles as a design or physical ridge, with the concentric circles locating the bottle centrally below the output port of the device.

As described above, the apparatus 100 provided includes a carbonation module 210 for carbonating a beverage. Certain features of some embodiments of the apparatus 100 may be designed to increase carbonation efficiency by increasing contact time between the carbon dioxide bubbler and the water and increasing efficiency of gas-liquid mixing. In addition, in some embodiments, specialized bottles are provided to increase the long term carbonation retention time of manually capped carbonated water after an initial carbonation process.

As shown in fig. 1, carbonation module 210 may provide a gas supply, such as carbonation tank 130, and a fluid container, such as carbonation container 140. The apparatus 100 may further include a holder, such as for holding the carbonation tank 140 or other fluid container permanently connected or threaded with respect to the gas supply 130, and a gas injection mechanism 135, such as a nozzle, for injecting gas into the fluid retained in the carbonation container 140.

During use, carbonation container 140 is filled with a fluid, such as water from water source 160. The gas injector 135 then injects gas below the fluid surface level 145 within the carbonation vessel 140. Typically, the gas injector 135 injects gas just below the top surface 145 of the fluid within the carbonation vessel 140 at a rate such that the gas follows a path to the bottom of the carbonation vessel and then follows a return path back to the top surface of the fluid.

To obtain consistent results, the carbonation container or reservoir 140 may be filled with water or fluid that will only carbonate to a predetermined level, allowing a sufficient amount of headspace to allow for consistent carbonation with desired efficiency. The amount of water drawn from the supply may be monitored to account for variations in the flow rate. Carbon dioxide may then be released from the compressed carbon dioxide storage tank by applying an actuator to the actuating pin. The carbon dioxide may then pass through tubing, possibly a one-way valve, and then a gas injector 135, such as an injection pipette as discussed in detail below. Further, the carbonation reservoir may include a pressure switch for maintaining a consistent maximum pressure level, such as 150PSI, thereby ensuring control of the pressure level within the carbonation reservoir.

Furthermore, when a user requests carbonated water, a separate valve may first release carbon dioxide to reduce the pressure within the carbonation vessel, thereby avoiding excessive flow to the user. In addition, an air pump may be provided to discharge carbonated water after the carbon dioxide is released, so as to dispense the carbonated water at a consistent rate. A large diameter valve may be provided to dispense water to avoid over-stirring which would otherwise release carbonation of the water.

Several methods are available to assist in carbonation, including increasing the contact time between carbon dioxide or other carbonated gas and water or any other fluid to be carbonated, increasing the contact surface area between the carbonated fluid and the fluid to be carbonated, increasing the pressure, and decreasing the temperature. For ease of reference, the carbonated fluid is sometimes referred to as carbon dioxide and the fluid to be carbonated is sometimes referred to as water.

The contact time between water and carbon dioxide can be increased by several methods. For example, as shown in fig. 15A and 15B, by adding a spiral step-type structure within the carbonation vessel. This "step" may be "stepped" like a step, may be smooth like a ramp, or may repeat various other structural subassemblies along its length, as will be described later. The steps will extend from the walls of the carbonation vessel 140 inwardly toward the center of the vessel but will not extend all the way to the center of the vessel, thus leaving a continuous "center hole" throughout the vertical length of the steps. When referring to the central empty space between the steps, this central hole is referred to in the architectural language as a "well". The well will move the injected carbon dioxide down the center of the carbonation vessel, thereby imparting a driving and mixing force on the water. This downwardly moving mixture of water and carbon dioxide, once it hits the bottom of the carbonation container, will be forced back up to the top of the container. The now upwardly moving mixture of water and carbon dioxide will be forced by the helical step structure to rise back up to the top of the carbonation vessel 140 in a helical motion. The helical steps function to increase the contact time between the water and carbon dioxide, thereby promoting dissolution of carbon dioxide into the water, due to the longer helical return path, compared to the more straight-vertical return path the water/carbon dioxide mixture would follow if no helical steps were present.

Thus, fig. 15A and 15B illustrate one example of a carbonation vessel 140 for use with the apparatus 100 of fig. 1, the carbonation vessel 140 being designed to increase the duration of contact between the carbonated gas and the water. As shown, the carbonation vessel 140 may include an inner surface 1500, in this case a spiral path adjacent to an outer wall 1510 of the carbonation vessel 140, the spiral path designed to block the return path. By forcing the carbonated gas to take a longer return stroke to the fluid surface level, the gas remains in contact with the fluid for a longer period of time, thereby allowing the fluid to mix with the gas more efficiently. Since the illustrated spiral path 1500 is adjacent to the outer wall 1510 of the container and does not extend to the center of the container, the central well hole allows a direct path to the bottom 1520 of the carbonation container 140. In some embodiments, the bottom 1520 of the vessel may have a profile designed to deflect gas toward the sides of the vessel, thereby forcing the gas back through the spiral path 1500.

Fig. 16 illustrates surface features, as shown by the vertical wings 1600 on the upper surface 1610 of the spiral path 1500 of fig. 15A.

Such wings 1600 may be configured to direct any downward flowing water stream, such as a water stream captured by injected carbon dioxide or pushed downward, creating a downward spiral motion. This downward spiral motion will be opposite to the rotational direction of the upward spiral motion on the underside of the step, creating additional agitation.

Fig. 17 shows an alternative embodiment of a carbonation vessel 140 for use with the apparatus of fig. 1. As shown, the container may include an annular flange 1700 below the liquid level 145. Thus, upon injection, the gas travels to the bottom of the carbonation vessel 140 and, upon rising to the upper surface 145 of the fluid, the gas is redirected downwardly through the annular flange 1700. Such a flange 1700 may be used alone or in combination with other features, such as the spiral path 1500 discussed above.

As shown, flange 1700 does not extend to the center of carbonation container 140, leaving a central bore 1720 that allows a carbonated gas, such as carbon dioxide, to pass vertically downward during injection. However, during the return stroke, the gas is redirected downward before returning to the upper surface 145 of the fluid.

As shown, the flange 1700 may be concave downward and may maintain the gas below the liquid level 145 after agitation is completed.

Increasing the surface area of the carbon dioxide and water can be accomplished by various methods. Breaking up the bubbles into smaller bubbles is a method because smaller spheres have a higher surface area to volume ratio than larger spheres.

Fig. 18 shows an alternative embodiment of a carbonation vessel 140 designed to increase the surface area of the carbonated gas for use with the apparatus of fig. 1. As shown, the carbonation vessel 140 may have a gas agitator for breaking up gas bubbles. This may be achieved, for example, by using a plastic or metal grid 1800 located below the upper surface 145 of the fluid and by forcing injected carbon dioxide through the grid. To facilitate preventing bubbles from recombining after passing through the grid 1800, the grid may have a greater thickness, forcing them to completely separate from each other once the bubbles enter the thickness of the grid.

Another way to increase the agitation in the water, thereby using the water as a force to agitate the gas and break up the bubbles, is to induce the formation of a vortex. Vortices, like small vortices, can be created by forcing a liquid or gas past a specially shaped obstacle. These obstacles may be placed along the inner wall of the carbonation container.

Fig. 19 shows an alternative embodiment of a carbonation vessel 140, the carbonation vessel 140 including an obstruction 1900 shaped to create a vortex 1910 for use with the apparatus of fig. 1. Fig. 20A shows an alternative embodiment of a carbonation vessel similar to that shown in fig. 19 for the apparatus 100 of fig. 1. Fig. 20B shows another alternative embodiment that includes a plurality of small overhangs 1900 in the middle of carbonation vessel 140 in addition to obstacles 1900 as shown in fig. 19. Fig. 20C shows a tree assembly 2000 that may be inserted into a carbonation container to increase carbon dioxide absorption.

As shown in fig. 20B, by providing a plurality of obstacles 1900, the carbon dioxide dispensed by the gas injector may be retained at more locations within carbonation vessel 140, resulting in more surface area, defining contact between the carbon dioxide and the fluid for a longer period of time. Fig. 20B also shows an elongated form of the gas injector 135, which results in carbon dioxide being sent directly to the bottom of the carbonation vessel 140. While longer gas injectors 135 may result in reduced contact between the carbon dioxide and the fluid flowing toward the bottom of the carbonation vessel 140, and further reduced agitation of the fluid, the extended gas injectors provide structure at a central location within the carbonation vessel. This structure may serve to achieve additional surface area for the obstacles 1900, each in the form of an annular flange secured to the gas injector 135.

As shown, these obstacles 1900 may also have a downward concavity to capture and retain carbon dioxide bubbles 1920 as shown in fig. 20A, allowing carbon dioxide to continue to contact water (thereby releasing all carbon dioxide in the headspace, but not carbon dioxide captured by the obstacles) even if the pressure relief valve of the carbonation container is activated. Such obstacles, as shown in fig. 19, may have a fine mesh 1930 (about 1-2mm in diameter) in addition to being concave, as shown in fig. 19, also exposing the top of any trapped air bubbles to the water above the obstacle without having holes large enough for the bubbles to actually pass through.

As shown in fig. 20C, tree assembly 2000 may be provided and inserted into carbonation container 140 in addition to or in place of the aforementioned obstacles 1900. As shown in fig. 20B, such an assembly may be assembled around the exterior of a long gas injector 135. As shown, tree assembly 2000 may include a plurality of obstructions 2010 for blocking the return path of carbon dioxide to upper surface 145 of the fluid. As shown, each obstacle may branch into sub-obstacles 2020 to increase the surface area of the obstacle, thereby increasing the amount of contact between the carbon dioxide retained by the obstacle and the fluid itself. In such embodiments, the inner surface, which typically includes the annular flange, branches into a plurality of inner surfaces.

Another way to increase the agitation in the water, thereby utilizing the water to agitate and break up the bubbles, is to flexibly attach 2100 the carbon dioxide injection straw 135 to the wall or other fixed point of the carbonation vessel 140 so that it is free to "swing" to some extent. Subsequently, by having an intentionally offset injection hole at the tip of the injection straw 135, or relying on the natural random stroke of the injected carbon dioxide, the injection straw 135 will oscillate vigorously as the carbon dioxide is injected into the water of the carbonation container 140. This vigorous oscillation will agitate the water, aiding mixing, while not requiring any form of motor, as this motion will be driven by the power of the carbon dioxide escaping from the tip of the syringe pipette. To further enhance the mixing effect by this method, a paddle shape can be added to the injection pipette so that it pushes more water during each movement.

Instead of a flexible connection 2100 to the wall of the carbonation container, a rotational connection, such as a pivot, could also be used, which would force the movement of the injection straw 135 in a circular motion, rather than the more random motion created by the simpler flexible connection 2100. Instead of having a simple hole in the tip of the syringe, there could be a reed-type attachment around the injection hole, just like the reed of a reed instrument. When carbon dioxide is blown in, the reed structure vibrates at a certain frequency (as a musician plays a wind instrument). Such vibration may further agitate the water on a more microscopic scale than the bulk mixing caused by the overall circular or oscillating motion of the suction tube. Finally, there may be multiple injection straws, there may be one injection straw at the top of the carbonation reservoir and one injection straw at the bottom, and injecting carbon dioxide simultaneously or alternately between the two may further aid mixing.

Figure 21 shows a nozzle 135 for use in the carbonation module of the apparatus of figure 1. As shown, the nozzles 135 extend below the level 145 of the water and are connected by a flexible connection 2100.

Fig. 22 shows an alternative embodiment of a carbonation vessel 140 for use with the apparatus 100 of fig. 1. As shown, another way to increase the agitation of the water and thereby utilize the water as a force to agitate and break up bubbles is to have reinforcing objects (jack-type objects)2200 in the carbonation vessel 140 that will be thrown away by the water as it is mixed with the injected carbon dioxide. These random tumbling enhancements 2200 can further assist in water agitation and mixing with carbon dioxide similar to tennis balls in a dryer. These stiffeners 2200 may have paddle-shaped "appendages" to facilitate pushing and to help mix the water and injected gas.

In some embodiments, multiple nozzles 135 may be provided to increase the amount of agitation during carbonation. For example, the nozzles may be positioned such that a carbonation gas (carbonation case), such as carbon dioxide, from each nozzle traverses the path to create an over-stirred region at such an interface and increase the efficiency of carbonation.

One problem with the prior art systems discussed previously is that if a user places a carbonated bottle into a refrigerator, the manual tightening of the cap of the bottle cap will maintain an imperfect seal, thereby allowing carbon dioxide to slowly leak from the bottle. Furthermore, whenever the cap is opened to drink and then re-capped, the carbon dioxide that has left the water and is in the headspace will escape to the atmosphere, further reducing the pressure in the bottle, reducing the amount of carbon dioxide in the bottle, further accelerating the decarbonation process of any water remaining in the bottle, even if the bottle is refrigerated, re-agitated or re-pressurized.

To solve this problem, several solutions are disclosed. These solutions revolve around the general idea of capturing any carbon dioxide that separates from the water during natural decarbonation and trapping this separated carbon dioxide in a gas pocket that is not exposed to leaks and to an occasional open bottle cap (which opens when the user gets a beverage). These carbon dioxide capture schemes will cause the carbonated water dispensed into the capless bottle to "retain" more carbon dioxide than a capless bottle without these carbon dioxide capture mechanisms, as the latter carbon dioxide can simply be bubbled out of solution and through the mouth of the bottle into the atmosphere. If the water is first chilled, any carbon dioxide captured by the mechanism described below can then be re-mixed into the water to re-carbonate it to some extent (as colder water can be more easily carbonated by stirring than warmer water).

Similar to carbonation container 140 discussed above with respect to fig. 19 and 20A, one way to capture such separated carbon dioxide from the bottle cap is to have downward obstructions, which may be concave surfaces 1900 along the interior wall of the bottle. These concavities 1900 will trap any bubbles 1920 floating upward near the bottle wall. Thus, air bubbles will be trapped in the concave surface and will not enter the area of the closure. The concavity 1900 may have a continuous surface or may be reticulated, as shown in fig. 19, to expose the top of any trapped bubbles to the water above the concavity, thereby increasing the contact surface area, while not allowing the bubbles to travel all the way to the headspace of the bottle, which could otherwise escape from the bottle. The concave surface 1900 may also have additional micro-concavities along its bottom surface to act to separate the bubbles 1920 of carbon dioxide from each other to increase the contact surface area between the carbon dioxide and water.

Fig. 23 shows a side profile of a storage container 2300 for storing carbonated beverages for use with the apparatus 100 of fig. 1. As shown, instead of the concavity 1900 being attached to the inner wall of the bottle 140 as described above, the illustrated storage container 2300 has an overall bottle shape that functions in much the same manner as discussed. For example, the bottle may have one or more "shoulders" 2310 that are configured to be concave in nature. These shoulders 2310 can serve as both a "carbon dioxide" trapping concavity 2320 when the bottle is in a "normal" bottle position (i.e., sitting on the flat bottom of the bottle) 2330, and can serve as a carbon dioxide trapping concavity only when the bottle is oriented at an angle, as shown. The latter would be preferable because it would make the shape of the bottle easy to clean (i.e., its shape without "U-turns"), but would still allow carbon dioxide to be captured from the bottle cap 2340. Such a bottle may have a second bottle bottom 2350, or provide a stand for holding the bottle at an angle for storage, wherein the bottle cap 2340 is submerged below the fluid surface level 2360.

Fig. 24 shows another embodiment of a storage container 2300 for storing carbonated beverages for use with the apparatus 100 of fig. 1. An alternative to the concave surface 1900 is a thin grid 2400 across the horizontal cross-section of the bottle. This grid 2400 will be submerged within the water column and below the upper surface 145 of the fluid, and there may be multiple stacked grids 2400a, b, for example a few centimeters apart. When the air bubbles 2410 naturally rise after separating from water during natural decarbonation, the air bubbles 2410 will be trapped in the mesh 2400.

Figure 25 shows a gas tank 130 for use in the apparatus 100 of figure 1. A typical compressed carbon dioxide tank contains both liquid carbon dioxide and gaseous carbon dioxide. If liquid carbon dioxide is discharged from the compressed carbon dioxide tank, it will rapidly evaporate, creating a higher partial pressure than if only carbon dioxide gas is discharged. Such rapid localized high pressure areas may cause the pipes used to transport the discharged carbon dioxide from the storage tank to the desired location to break.

To avoid the potential for liquid carbon dioxide to escape from the tank, most systems using compressed carbon dioxide require the carbon dioxide tank to be placed vertically so that liquid carbon dioxide cannot enter the outlet valve of the tank. In situations where a horizontal orientation of the tank is required, an anti-siphon is typically used. These are curved "diplegs" extending downwardly from the outlet valve of the carbon dioxide tank and into the carbon dioxide tank, the diplegs having an upward bend to ensure that only gaseous carbon dioxide enters the anti-siphon tube and exits the outlet valve. The anti-siphon tube, when working properly, needs to be carefully installed to ensure the correct orientation of the carbon dioxide canister so that the curve of the internal anti-siphon tube points in the correct direction (upwards with respect to the ground).

As shown, gas tank 130 may provide a gas tank housing 2500, a gas tank 2510 and a gas outlet 2520 for conveying gas from the gas tank to, for example, carbonation vessel 140. To provide a siphon directly to the gas contents of the cylinder 130, a flexible or freely rotatable anti-siphon 2530 is provided having a first end at the gas outlet 2520 and extending into the gas reservoir 2510. A float 2540 is then provided for suspending the second end of the flexible tube 2520 within the gas tank. The float will always ensure that the tip of the bendable/freely rotatable anti-siphon tube always remains above the liquid carbon dioxide surface, regardless of the rotation of the container in a horizontal orientation.

Fig. 26A shows a block diagram of a carbonation module 210 for use in the apparatus 100 of fig. 1, the module including a carbonation vessel 140 and a valve system.

As shown, carbonation vessel 140 further includes an inlet 2600 and an outlet 2610, wherein outlet 2610 delivers carbonated fluid 2620 to a system outlet. In such embodiments, after the fluid 2620 in the carbonation vessel 140 is carbonated, the outlet 2610 is opened and gas from the gas supply at the inlet 2600 displaces the fluid 2620 in the carbonation vessel.

Alternatively or in combination, the gas used to inject the fluid may be an off-gas, such as the gas in the head 2630 of the carbonation vessel 140. Thus, during carbonation, a valve 2640 (e.g., a solenoid valve) may be used in conjunction with the pressure regulator 2650 to retain the pressurized carbon dioxide, which may then be used to release the carbon dioxide when the outlet 2610 is open.

With respect to the carbonation process itself, one method of carbonating water is commonly referred to as "forced carbonation". In "forced carbonation", carbon dioxide bubbles were initially bubbled into the water through an "aerator stone" in a pressure vessel at a pressure of 80 PSI. As the bubbles rise through the water column, part of the carbon dioxide dissolves into the water and the remainder accumulates in the headspace (the gaseous region above the water level in the pressure vessel). The pressure of the pressure vessel is maintained at a pressurized pressure, in this case 80PSI, to allow the carbon dioxide in the headspace to passively and slowly diffuse into the water below.

Traditional "forced carbonation" requires time. One factor limiting the speed of this passive dissolution process is the surface area of the carbon dioxide-water interface. To increase this surface area and thus increase the rate of passive carbonation, we propose to increase the surface area of the carbon dioxide-water interface. One way to achieve this goal is to trap the rising carbon dioxide bubbles under water when they are initially injected into the water (by aeration rocks or other means) before they reach the headspace. To this end, a large number of small overhangs may be placed along the inner wall of the carbonation vessel, as shown in fig. 17-20A, or possibly in the middle of the carbonation chamber (e.g., attached to a tree-shaped object inserted into the pressure vessel), as shown in fig. 20B-20C. These overhangs trap tiny carbon dioxide bubbles as they rise (due to their buoyancy) after the initial injection of carbon dioxide.

In addition, there are several methods for preparing carbonated water, all using a combination of temperature, pressure, time, and mixing or stirring. Two of these methods include "forced carbonation" as described above, which is slower, and the agitation-based method is faster. Although the stirring process is rapid, it is not efficient in utilizing carbon dioxide when producing highly carbonated water. This is because, in order to increase the amount of agitation and mixing (achieved by injecting carbon dioxide at high speed), it must occasionally release carbon dioxide into the atmosphere to reduce the pressure within the pressure vessel, thereby allowing more carbon dioxide to be injected to further agitate the carbon dioxide/water mixture.

Figure 26B shows a hybrid carbonation process that may combine a forced carbonation process with a stirred process. This mixing method takes advantage of the ability of the agitation method to effectively reach moderate carbonation levels and then passively continues the carbonation process over time using the ability of the forced carbonation method. The following is an example scenario of this hybrid system used in the device 100 according to the present disclosure.

Initially, a carbonation container (2655) is provided and substantially filled with a fluid to be carbonated (2660), such as water. When the container is substantially full, it may be filled to the fill line such that a known amount of headspace remains in the container, and thus carbonation may provide consistent results. The gas injector 135 initially injects at least one dispense of carbonated fluid (2665), such as three carbon dioxide injections, into the water to forcibly agitate and rapidly reach a moderate carbonation level. However, carbon dioxide is not released, but rather the carbonation vessel is maintained at a high pressure (2670), such as 150PSI or 170 PSI.

Since carbon dioxide is not released, forced carbonation may be performed, including maximizing the use of the internal structure shown in fig. 17-20C. Accordingly, carbonation proceeds over time to achieve "maximum carbonation" of the water.

If the user desires to carbonate the beverage (2673), the appliance 100 may then determine the current carbonation level of the liquid in the carbonation container (2675) and compare it to the desired carbonation level (2678). The desired carbonation level may be selected by the user or it may be a default value for the device. If a user requires water at a higher level of carbonation than is already present in the container, for example if water is required before forced carbonation is complete, the apparatus 100 may release the pressure by releasing carbon dioxide from the carbonation container (2680), and rapidly carbonate the fluid in the container by resuming the agitation based carbonation process and injecting carbon dioxide (2685). Such additional "wasted" injection and venting of carbon dioxide can quickly bring carbonation to a maximum level.

After the water is carbonated to a desired level, the apparatus 100 may release carbon dioxide from the carbonation vessel (2690) so that the water is not dispensed at high pressure and then dispense the liquid to a user (2695).

In some embodiments, the user may specify a desired carbonation level in a particular beverage. In this case, if during the wait time, the user requests medium or mild carbonated water, the device 100 may calculate how much the wait time has elapsed, respectively how much plain water may need to be mixed with the carbonated water to reach the desired carbonation level, and then add such additional fluid (2697) before dispensing (2695). However, if no user needs highly carbonated water during the waiting period, the machine will complete its carbonation process by forced carbonation. Further, if the requested carbonation level is equal to the current carbonation level, the appliance may simply dispense 2695 the fluid to the user.

One novel aspect of the device 100 is the "endless container" function, which simulates the existence of an ever-filling container, the capacity of which appears to be endless. To create such an experience, the system must be able to: A) detecting when a container is empty or partially depleted, and/or, B) being able to uniquely identify each container relative to the beverage previously therein, or detect and/or indicate the current contents of the container, so that the system will be able to automatically refill that container (or, in some cases, a second container, as described below) with the same beverage previously present therein. The former ('a') can be achieved by placing a level sensor (LLS) on the container. The container can be manufactured with an integrated LLS, or the LLS can be sold as a unit that users can attach to their own existing containers.

Off-the-shelf LLS already exists in a variety of forms including "floating switches", optical systems and conductivity based systems. Although these sensors could theoretically be used in "endless tank" systems, we propose several novel liquid level detection methods here that have advantages over existing off-the-shelf sensors.

The latter ('B') can be achieved by any kind of identifier connected to the container. This may be RFID, bar code, unique color or shape, etc. Further, the use of identifiers to track the most recent beverage for filling any beverage container, whether or not it is used as part of an endless container system, may be implemented. Thus, a user may have a glass or bottle with an incorporated RFID tag that identifies a previous container. When a user refills the container at the device 100, the device may automatically fill the container with the particular beverage identified by the RFID tag.

One embodiment of such an "endless container" system may include coupling an RFID chip to a container. By coupling with the container, the RFID may in some cases serve both as an LLS (as described further below) and as an identification tag that the beverage dispensing machine may use to know exactly what beverage it should refill the container (e.g., the same beverage it previously filled the container with). The RFID chip will be able to transmit its unique ID to the beverage dispensing device in the following cases: 1) whenever an RFID is within sufficiently close range of its RFID reader, and 2) whenever an RFID is not intentionally or unintentionally blocked from its signal by signal blocking substances such as metals and water.

Fig. 27A and 27B illustrate one embodiment of a level detector 2700 used in a beverage container 2710 in two states. Depending on the wireless technology incorporated into the apparatus 100, the liquid level detector 2700 may be used in conjunction with a processor and sensor 2720 (also referred to herein as a receiver antenna). The device may then have a fluid dispenser that then dispenses fluid into the detected container 2710 or into a different container when the processor determines that the container 2710 is empty or depleted below a certain level.

As shown, the liquid level detector 2700 may float in a float, such as an RFID chip embedded within a waterproof object, such as a plastic ball that falls into a container, and thus may float at a liquid level 2730 in the container 2710. In such embodiments, the fluid level detector 2700 may function by taking advantage of certain constraints inherent in the ability of RFID to transmit data. In order to transmit data, a power source must be provided to a typical RFID chip, which can be realized by a wirelessly transmitted electromagnetic power source. The RFID chip must then wirelessly transmit data back to a receiver antenna 2720, which is typically located near the power source.

The transmission range of RFID data is limited by a number of factors, including the size and orientation of the antenna, the amount of voltage and current used, etc. In addition, certain materials, such as metal or water, if located between the RFID and its power source or receiving antenna, may block or attenuate data transmission from and/or transmission power to the RFID. By utilizing these concepts, it is possible to install an RFID inside a float 2700 (e.g., a plastic ball) inside the container 2710. If there is a beverage in the container, the ability of the floating RFID2700 to transmit data will be diminished relative to the amount of beverage between the container and its corresponding data receiving antenna. Thus, if the receiving antenna 2720 is located on a flat surface on which the container is placed, as the beverage in the container decreases (e.g., the user drinks), the attenuation of data transmission between the RFID2700 and the receiving antenna 2720 will decrease in a predictable manner, as less and less beverage will be between the floating RFID itself and the receiving antenna.

In such embodiments, the liquid level detector 2700 may send a constant signal as long as it is powered, or a passive detector may be passively accessed by the sensor unit 2720. Due to the attenuation of any wireless signal by the liquid in container 2710, this signal can only be acquired when the liquid in the container is depleted. Thus, upon receiving such a signal, the device 100 confirms that the liquid in the container 2710 is depleted.

In some embodiments, the attenuation level itself may provide information to the device 100 about the liquid level in the container 2710. Thus, a partially depleted beverage container 2710 will partially attenuate the wireless signal, while a fully depleted container will reduce the attenuation of the wireless signal, if any.

Where the detector 2700 takes the form of a float, the float in which the RFID is packaged may be of any shape, including a particular shape that helps prevent objects from being able to float out of the neck of the container when the container is tipped (i.e., prevents them from flowing into the mouth when the user drinks from the container).

Fig. 28A and 28B illustrate an alternative embodiment of a level detector 2800 used in a beverage container 2810 in two states.

As shown, the RFID chip 2800 may be coupled to the container 2810 by taping the RFID to the container 2820 (e.g., with an elastic band or velcro, or with an adjustable strap-like clasp), or by gluing the RFID to the container with an adhesive. In such embodiments, the liquid level detector 2800 is on an exterior surface on a first side 2820 of the container 2810, and the sensor or receiving antenna 2830 is located near a second side 2840 of the container 2810.

Accordingly, the level detector 2800 is fixed at a height of the reservoir 2810 and the signal from the detector 2800 to the receiving antenna 2830 will be blocked or attenuated by the fluid in the reservoir 2810 until the fluid level 2850 is below the level of the detector 2800.

Fig. 29A and 29B illustrate an alternative embodiment of a liquid level detector 2900 used in a beverage container 2910 in two states. In the illustrated embodiment, the liquid level detector 2900 is embedded in the base 2920 of the beverage container 2910. In such embodiments, the antenna 2930 for acquiring signals from the liquid level detector 2900 is mounted adjacent to the outer wall 2940 of the container 2910. Thus, when the container 2910 is full, the liquid level detector 2900 will be completely covered, and the beverage 2950 will block the space between the detector and the antenna 2930. Thus, when the beverage is depleted, a signal from detector 2900 may be retrieved via antenna 2930.

Fig. 30A and 30B show an alternative embodiment of a liquid level detector 3000 for use in a beverage container 3010 in two states. As shown, the RFID chip may be embedded in a float, as in the embodiment of fig. 27A, B. However, in the embodiment shown here, an antenna 3020 may be provided near the wall 3030 of the vessel 3010 such that signals are communicated between the detector 3000 and the antenna through the wall.

In such embodiments, the walls of the container may be made of a combination of substances 3040a, b, c, some of which attenuate data transmission more than others, and others of which attenuate data transmission less, thereby "programming" predictable varying signal attenuation into the container 3010 as the floating RFID enters different areas of a bottle made of different materials.

Thus, the container 3010 may have a wall 3030 with a lower portion made of a first material 3040a and an upper portion made of a second material 3040b, and the second material attenuates radio transmission more than the first material.

Fig. 31A and 31B illustrate an alternative embodiment of a liquid level detector 3100 for use in a beverage container 3110 in two states.

As shown, in addition to float 3100 containing an RFID chip, the float can also act as the LLS itself by activating a switch when it reaches the bottom of container 3110. This may be achieved by having two exposed leads 3120a, b at the bottom of the container, which are bridged when the object 3100 falls far enough in the container. Alternatively, a transmitter embedded in the object may obtain the power required to transmit the signal when it contacts a power cord at the bottom of the container.

Additional embodiments of the "endless container" concept are also contemplated. For example, rather than relying on electronic detection of the need to refill a beverage, an "endless container" may also be implemented by relying on the user to place it into a container filling station only when the user wishes to fill it. Thus, the system would not require a LLS, but only the container would need to have an identification mechanism so that the refill machine could know the type of beverage previously added to the container and refill the container with the corresponding beverage. The identification mechanism may be coupled to the container in a variety of ways, including by embedding the identification mechanism into the container during manufacture, or by being adhered to the container by a user through the use of an adhesive or tape, or the like. The identification mechanism itself may be an RFID, a bar code, a unique color or shape, or any number of other existing mechanisms.

Furthermore, although RFID does not require an on-board power source, LLS systems with active data transmitters may be used as an alternative to RFID. Such transmitters require an on-board power source to operate. This power may be provided by a battery or capacitor connected to the LLS and this connected battery/capacitor may be charged whenever the container is placed into a refill system with its own power source (which may be a battery, wall outlet, solar, hydro, etc., as described elsewhere in this application). The wireless charging can be carried out by contacting the electrodes, winding coils and even by laser transmission (a solar panel is arranged on the container) and the like. Any container usage data recorded by the sensors on the container during this charging process may also be transmitted to the refill system.

Some embodiments may implement methods and systems for refilling a container with the correct amount of beverage. The refill system may refill the same bottle from which the depleted beverage has been detected, or alternatively, the refill system may fill a separate empty bottle with the same beverage from which the user has been detected to have been depleted from the bottle. In the former case, the refill station may refill the container upon detecting that the depleted container is placed below the beverage bottle mouth. In the latter case, the refill station may refill a new container whenever a) the in-use container is within data transmission range of the refill station (i.e., when it can tell the refill station that it has been depleted) and B) the in-use container has been depleted beyond some set threshold.

In embodiments where the system fills the second bottle when the first bottle is depleted, alternative methods for notifying the device of depletion of the first bottle are contemplated. For example, a user may manually send information to the system using, for example, an application associated with the system. Alternatively, a drive base may be provided for the first bottle remote from the second bottle at a convenient location. For example, a sensor and drive base designed to work with any of the embodiments of fig. 27-31 may be provided to be placed on a table or in a user's refrigerator. Thus, when the depleted bottle is returned to its base on a table, or to a refrigerator, a second bottle will automatically fill up for retrieval by the user.

In the case of a completely new container being filled or a completely empty container being refilled, the refill station may refill the container with the same amount of liquid previously recorded, whereas in the case of a partially depleted container being refilled, the refill station will only add enough beverage to fill the container without spilling it. This "topping up" can be achieved by combining the following two approaches: A) using a weight scale, B) knowing the weight and maximum beverage carrying capacity of the filled receptacle, C) subtracting the known weight of the receptacle from the weighed weight to calculate the weight (and thus the volume) of the liquid currently remaining in the receptacle, and finally D) adding enough beverage to fill the receptacle.

FIG. 32 is a flow chart illustrating a method for delivering fluid to a container. For example, the method may be implemented using the described apparatus 100 and the discussed containers and sensors. As shown in fig. 27A, 27B. The first container 2710 is provided with a liquid level detector 2700, for example a float ball containing an RFID tag (3200).

The device 100 then monitors the first container (3210) to determine if it is depleted. The device 100 then checks, using the processor and level detector 2700, whether the liquid level in the first container is depleted, first attempting to retrieve a signal from the level detector 2700 at sensor 2720 (3220). Such an attempt may be made, for example, by attempting to send power to the RFID chip and obtain a response, or by detecting a signal from an active transmitter.

If no signal is retrieved, it is determined that the first container 2710 is not depleted. If a signal is retrieved, it is compared to the expected signal (3230). The expected signal may represent, for example, a completely empty container.

Thus, if the retrieved signal matches exactly the expected signal, then the container 2710 is determined to be empty. If the signal is attenuated relative to the expected signal, the apparatus 100 determines whether the signal is above a threshold level of intensity (3240). Such a threshold may represent a particular consumption level.

If the beverage in the container has not been depleted beyond the threshold amount and no signal is detected or the detected signal is below the threshold intensity, the method continues to monitor the container (at 3210).

Upon detecting that the container has been completely depleted (at 3230) or depleted beyond a threshold amount (at 3240), device 100 identifies the particular contents of the container prior to depletion (3250). This may be done, for example, by examining the contents of the retrieved signal or by evaluating a different indication from the container 3210 or the user. The device 100 then dispenses a fluid corresponding to the identified contents into the first container 2710 or the second container at a fluid dispenser (3260).

Fig. 33A is a perspective view of an alternative embodiment of a customized beverage making device 100 including a storage module 3300 for an additive cartridge 110. Generally, cassettes 110a, b that are desired to be used at any given time can be removed from the storage module 3300 and placed in a docked position (not shown) for use in making a beverage.

Fig. 33B is another perspective view of the customized beverage making device of fig. 33A including a shelf 3310 for shorter beverage containers. The shelf 3310 is shown in fig. 33A folded into a wall in the device 100.

FIG. 34A is a perspective view of an alternative embodiment of a customized beverage making device that includes a different storage module 3400 for additive cartridges 110a, 110 b. While several designs of such memory modules are shown, including the designs shown here and in fig. 33A, 34B, 34D, 35B, and 36, other configurations are also contemplated. Further, the modules may be mounted on the left or right side of the device 100, or on both sides. Further, as schematically shown in FIG. 36, a separate storage module 3600 may be provided and such a module may be used to implement an activity feature for tracking a plurality of cassettes 110a, b.

FIG. 34B is a perspective view of the customized beverage making device of FIG. 34A, showing the removable front panel removed. As shown, the device includes a carbon dioxide canister 130 and a filter 150, and the filter is rotatably removable from the device.

Fig. 34C is a rear perspective view of the customized beverage making device of fig. 34A, including a water tank 3410 for storing water. Fig. 34D is a rear perspective view of the customized beverage making device 110 of fig. 34A, including two water tanks 3410a, b for storing water. Such a water tank 3410 may replace the water source discussed elsewhere in this disclosure and may be provided in various sizes depending on the expected flow rate for a particular installation. As shown, the water tanks 3410 may be modular such that one, two, or more water tanks may be provided. In some embodiments, the water tanks may be stacked behind each other and connected together to provide additional storage.

FIG. 35A is a perspective view of an alternative embodiment of the customized beverage making device 100 showing the additive cartridge 110 installed. Fig. 35B is a rear perspective view of the customized beverage making apparatus of fig. 35A, including an optional storage module 3500 for additive cartridges 110a, B and water tanks 3410a, B for water storage.

FIG. 36 is a perspective view of an alternative embodiment of the customized beverage making device 100 showing a plurality of additive cartridges 110a, b installed and including a storage module 3400 for attaching an additive cartridge 110.

As further shown in fig. 33A-36, embodiments of the provided apparatus 100 may include designated locations for beverage containers, shown as circles or concentric circles at the bottom of the apparatus. Generally, when using a device for dispensing a liquid, the device risks dispensing the liquid when no beverage container is present. Thus, in some embodiments, a moisture sensor is provided at a designated location of the beverage container so that if the sensor detects any or more than a threshold amount of water, a signal can be sent to the internal control circuitry of the device to stop the water output. Alternatively or additionally, the sensor may be configured to send a warning to the user, thereby mitigating any spillover or flooding that may occur.

Although the moisture sensor is described in a particular location, it should be understood that such a moisture sensor may be located elsewhere on the device 100.

FIG. 37 shows a schematic view of a storage module 3600 for additive cassettes, similar to that shown in FIG. 33A, with additional features. Although the schematic shown in fig. 37 illustrates a memory module 3600 that takes a different aesthetic form than that shown in fig. 33A-36, it should be understood that the features described herein may be incorporated into memory modules having a variety of form factors.

It is often advantageous for the device 100 to know the contents of an additive cartridge 110 that has been inserted for use in the device. For example, the cartridge identification function allows the machine to know if any special processing procedures must be performed on the currently inserted cartridge, such as diluting the syrup to a greater extent than standard cartridge values by adding a certain amount of water, converting the powder to syrup by adding a certain amount of water, or adding water at a specified temperature if the contents of the cartridge are for brewing.

Cassette identification also allows the device 100 or a backend system (which may be incorporated by software or linked by a wireless connection) to track usage statistics for a particular flavor, which may help allow the system to recommend other flavors or additives to the user. Such back-end systems may make such recommendations using Artificial Intelligence (AI). Such software may similarly allow the device 100 to create and replicate recipes using the contents of one or more cartridges 110.

The cartridge identification will also enable the machine or networked backend to notice if the user is making any new flavor mixes that may be promoted to a broader audience, thereby "crowd sourcing" the flavor creation.

Cassette identification can also enable the cassette 110 to be filled with syrups having a wide range of viscosities, as the contents of the cassette are known and can therefore be accounted for by dispensing additives from the cassette. For example, if the device 100 is informed that high viscosity syrup is present in the cartridge 110, the device can know the exact supply voltage level (or PWM level) of the air pump that will dispense the additive at the desired rate. Finally, data relating to the contents of the cassette 110 may be necessary for certain functions, including the elements of the endless bottle feature described above.

For example, where RFID tags are used to identify the cassette 110 and beverage container (e.g., glass), a first user "user a" may associate the glass with a blueberry taste. Later, a second user may place a strawberry cassette into the machine. When "user a" returns and attempts to fill his cup without checking the container, the device 100 may alert the user to the change in taste and ask if a new taste should be used. If "user A" chooses to utilize a new flavor, the device 100 may further query the user as to whether to associate their RFID tag on glass with a strawberry flavor.

If the cassette is a disposable compartment (i.e. sent as a sealed container and disposed of after a single use in the machine), the device 100 is directly allowed to identify the contents of the inserted cassette, since the contents of the cassette can be determined at the factory where it is produced, and therefore the compartment can be labelled with a machine-readable label corresponding to its contents at the factory. However, when one wishes to have a multi-use cassette that can be cleaned, refilled (possibly with something not previously loaded) and reused by the user, the problem of letting the machine know the contents of the cassette is complicated.

To identify cassettes and keep multiple cassettes 110 in order, a storage module 3600 may be provided. The storage module 3600 may include labeled trays having storage shelves 3610 for individual cassettes 110, each storage compartment having a particular flavor label 3620. An array of magnets 3630 is embedded in the wall of each storage rack 3610, the magnets 3630 may be permanent magnets or electromagnets arranged or activated in such a way that each storage rack 3610 of the tray has a different magnetic code. For example, the permanent magnets 3630 may be spaced apart to apply a bar code-like code to cassettes 110 inserted into respective storage shelves 3610.

In such an embodiment, each cassette 110 may be provided with a tape 3640 that is aligned with the magnetic array 3630 in storage rack 3610 when stored. Thus, when stored, the cassette 110 will be magnetized and encoded with a pattern of magnets 3630 in corresponding brackets 3610.

After encoding the cartridge 110, once inserted into the device 100, the device will be able to use a magnetic stripe reader to evaluate the contents of the cartridge 110.

If the refill pack's cover is fitted with an array of permanent magnets, a similar concept can be used to transfer information directly from the large syrup refill pack to the bay, whereby the magnets will abut the magnetic stripe on the cartridge (e.g., if the magnetic stripe is on the cartridge's cover, it will press against the refill pack's cover when the bay is being filled).

Alternatively, if the compartment is completely or at least partially transparent, and if the contents of the compartment change with color, the device 100 may distinguish between different compartment contents by colorimetry (i.e., measuring absorbance of light at a particular wavelength).

FIG. 38A shows an alternative embodiment for marking the contents of the cassette 110. In some embodiments, a plurality of pre-tagged and RFID encoded bands, such as elastic bands 3800, may be provided to a user. For example, the user may be provided with two elastic bands, one labeled "strawberry" with a correspondingly encoded RFID tag, and a second labeled "blueberry" with a correspondingly encoded RFID tag. The user will then mark the cassette 110 using the provided tape 3800 based on the contents of the corresponding cassette. The RFID tag 3810 of the strap 3800 would then be positioned so that it can be read by an RFID reader in the device 100.

As shown, the cassette 110 may be provided with a stop 3820 such that the applied tape 3800 is flush with the surface 3830 of the cassette 110. Such tape can be sealed so that it can remain on the cartridge 110 during cleaning.

In some embodiments, as shown in fig. 38B, the RFID tag 3850 may be embedded and permanently encoded in the cover 3840 of the cassette 110. Such a cover 3840 may then permanently embed the RFID data at the factory and may further provide text labeling or color designation content. The user can then use the cover 3840 associated with the desired flavor on any cassette 110 associated with the device 100.

FIGS. 39A-39C illustrate an additive cartridge 3700 for use with the device 100 of FIG. 1. As discussed above with respect to fig. 7, such a cartridge 3700 can be designed to drip syrup directly into a user's beverage or beverage container. As shown, the cassette 3700 generally contains a syrup reservoir 3705 and has an air input hole 3710, which air input hole 3710 can be engaged with the air conduits 600a, b of fig. 6, for example, to connect the air input hole to the pump. The cassette 3700 also includes a syrup outlet 3720 and a tube 3730 for connecting syrup from the syrup reservoir 3705 to the syrup outlet 3720.

As shown in fig. 39A, the air input holes 3710 can be on the top surface of the cassette 3700. Alternatively, as shown in fig. 37B and 37C, the air input hole 3710 may be on the side surface. If the air input holes 3710 are on the side surface, the syrup reservoir 3705 may have a fluid fill level 3725 below the location where the air input holes are located on the side surface, as shown in fig. 37B. Alternatively, an anti-siphon tube 3740 may be provided in association with the air input hole 3710 such that the fill level 3725 of the syrup reservoir 3705 may be higher than the air input tube, as shown in figure 37C. Thus, even where the air input aperture 3710 is below the fluid fill level 3725, the anti-siphon tube 3740 directs pressure from the fluid inlet above the fluid fill level. Although the air input aperture 3710 is shown opposite the syrup output aperture in fig. 37B and C, it should be understood that in some embodiments the air input aperture may be on the same side of the cartridge 3700 as the syrup output aperture, depending on the aesthetic and mechanical configuration of the device 100. Further, as shown in fig. 43A and 43B below, since the syrup output aperture 3720 can be facing downward and the air input aperture 3710 can be horizontal, the two openings can be on adjacent surfaces, rather than on the same surface of the cassette 3700.

As shown, the cassette 3700 can thus include a cassette housing (shown as a reservoir 3705) for holding fluid to a fluid fill level 3725, a fluid inlet 3710 (typically for receiving air) for pressurizing the cassette 110, and a fluid outlet 3720 above the fluid fill level 3725. The cassette may also include a siphon tube, such as an outlet tube 3730, for transporting fluid from below the fluid fill level 3725 in the cassette reservoir 3705 to the fluid outlet 3720. Accordingly, when pressure is applied at the fluid inlet 3710, it causes fluid from the cassette 3700 to be dispensed at the fluid outlet.

FIG. 40 shows an takeoff tube 3730, also known as a siphon, used in the context of the additive cartridge 3700 shown in FIGS. 39A-39C. Note that sample sizes are shown, but the tubes can have a variety of sizes. As shown, the output tube 3730 extends upwardly from the syrup reservoir 3705, forming an inverted U3750, and is connected to the downward facing syrup outlet aperture 3720. In such embodiments, the body, which may be the syrup holder 3705, may be separate from the cover 3760, as shown. The syrup outlet tube 3730 can then be integrated into the cap 3760 or attached to the cap 3760. When assembled, the bottom of the tube 3730 extending into the syrup reservoir 3705 can extend to the bottom of the reservoir so that it can receive all of the syrup in the cassette 3700 with the syrup outlet 3720 facing downward and generally placed over the user's beverage container or beverage. In this way, the syrup drips directly into the bottle and no additional tubing is required for delivery. Alternatively, as shown in FIGS. 8-9C, the cassette 3700 can extend above the "water flow" design.

Fig. 41A-41D illustrate a pumping process for removing the contents of the additive cartridge 2700 from the output tube 3730.

In some embodiments, each time syrup is pumped out of the add cassette 3700 (e.g., as air pumped into the air inlet 3710 pushes syrup out of the chamber through the syrup outlet tube 3730), air can then be pumped out of the chamber (e.g., by the reverse rotation of a peristaltic air pump). This may cause syrup to be pumped back into the syrup reservoir 3705. Thus, the applied pressure causes syrup to be drawn from the outlet side of the syrup conduit (as shown on the right in fig. 41A-D) back over the U-shaped portion 3750 of the tube and into the inlet side of the syrup tube, as shown on the left in the figures. This can be achieved by reverse pumping the air out of the chamber at a constant rate. However, as shown in fig. 41B, such constant rate pumping may cause the liquid to form a film along the boundary of the conduit 3730. Alternatively, the pumping may be pulsed (e.g., 1 second reverse pumping, 1 second no pumping, followed by 1 second reverse pumping, and so on). This pulsed reverse pumping may be more effective because it allows any syrup left on the outlet side of the conduit to resolidify (by gravity) into droplets that occupy the entire cross-sectional space of the conduit as shown in fig. 41C (rather than, for example, spreading out in the form of a "film" on the conduit wall, as can occur when air attempts to push it aside due to reverse pumping), thereby enabling the air to better push the droplets back through the conduit to the inlet side of the syrup conduit.

FIG. 42 shows an alternative embodiment of a takeoff pipe for use in the context of the additive cartridge shown in FIGS. 41A-41C. As shown, the top of the U-shaped portion 3750 may be flat when viewed as a horizontal portion.

One purpose of the dome-shaped syrup tube is to prevent the syrup from dripping from the chamber when handled by the user. A larger internal cross-section of the pipe allows for faster and easier pumping of fluid into the pipe (less friction). However, when fluid enters the horizontal portion (e.g., U-shaped portion 3750) of the conduit from the vertical portion of the conduit (e.g., the vertical outlet side of the syrup conduit), if the horizontal portion has a "high" internal dimension, then the water will spread out from the "ceiling" of the conduit under the force of gravity and be drawn away, allowing any air to easily bypass any air that previously pushed the droplets in the vertical portion of the conduit. This air bypass margin can prevent successful droplet pickup through the horizontal portion of the conduit. Thus, in order to prevent such suction failure and to allow the droplets to be successfully sucked back into the vertical inlet side of the syrup tube, the horizontal portion of the syrup tube must have a "short and wide" dimension, allowing the gravity flattened droplets to still fill the entire cross-section of the tube, and still allowing the suction to draw all of the syrup from the outlet side of the syrup tube to the inlet side of the syrup tube.

FIGS. 43A-43D illustrate one advantage of the embodiment of FIG. 42 over the embodiment of FIG. 40. Fig. 43A and 43B show the effect of reverse pumping described on a U-shaped section 3750 having a cross-section that coincides with the rest of the conduit, while fig. 41C and 41D show the effect of the same reverse pumping on a U-shaped section 3750 having the flat cross-section.

FIGS. 44A, 44B and 44C show views of an additive cartridge 3700 according to the present invention. FIGS. 45A and 45B show views of an embodiment of an additive cartridge 3700 according to the present invention. FIG. 44A shows a bottom view of cassette 3700, as described above, showing syrup outlet holes 3720 on the downward facing surface of the cassette. FIG. 44B shows a front view of the assembled cassette 3700, and shows the air input holes 3710 on the front surface. Further, as shown in fig. 45A and 45B, air input holes 3710 can be located on the top surface of the cassette 3700 and can be located on a surface adjacent to the syrup output holes 3720. FIG. 44B also shows securing element 3770 for removably mating cassette 3700 with device 100. In the illustrated embodiment, these fixation elements may take the form of magnets 3770, and the magnets 3770 may be coupled to corresponding magnets on the device 100. As shown in fig. 42C, the cover 3760 of the cartridge 3700 can be removed from the syrup reservoir 3705.

In the embodiment shown, the cassette 3700 has a removable cover. After removing the cover 3760, the user can more easily clean and refill the cartridge 3700. Accordingly, since the body including the syrup holder 3705 has a large opening so that water easily flows in, it can be washed in the washing machine. Further, the cap 3760 can be easily cleaned under the sink by placing the syrup tube under the water falling from the user's faucet. While specific embodiments are described, it is contemplated that the cassette 3700 can be further disassembled to further simplify cleaning, or to make the entire assembly machine washable.

Cleaning pipes is often problematic because the pipes are long, small diameter channels that are difficult to clean using conventional cleaning mechanisms, such as high velocity water or scrubbing perpendicular to the pipe wall. It is unlikely that a user such as the described refillable cartridge 110 will have specialized cleaning skills or equipment. Thus, a new pipe design is described and illustrated.

For example, one way in which the cleaning process can be simplified is to replace the siphon or syrup outlet tube 3730 with a deconstruction tube 4600, as shown in fig. 46A-47B. As shown, the deconstruction tube 4600 or siphon tube may include a first surface 4610 and a second surface 4630, as shown in fig. 46A, the first surface 4610 having a first surface groove 4620, and as shown in fig. 46B, the second surface 4630 having a second surface groove 4640. In such embodiments, first surface 4610 and second surface 4630 may be pressed against each other such that first surface recess 4620 and second surface recess 4640 combine to form siphon 4600. While the illustrated embodiment provides two surfaces with grooves, it is understood that grooves may be provided in only one of the two surfaces without compromising the integrity of the deconstructed tube 4600.

As shown, first surface 4610 and second surface 4630 may be planar. Alternatively, the surface may have some curvature to facilitate incorporation of the surface into the cassette 110.

In such an embodiment, deconstructed tube 4600 can be opened along its length so that the inner wall of the tube can be easily exposed and can be cleaned by hand or in a dishwasher.

FIGS. 47A-47B show perspective and side views of an deconstructed siphon 4600 incorporated into the cassette 110. As shown, the cartridge may have a cartridge housing that includes a reservoir 4650 and a cover 4660. First surface 4610 may be an extension of cover 4660 and second surface 4630 may be an inner surface of housing 4650.

In this configuration, the cartridge 110 serves as both a reservoir and a dispenser for syrup. To dispense the additive syrup, an external pump applies pressure at inlet 4670, pushing the additive through deconstructed siphon 4600 towards outlet nozzle 4680.

As shown, the first surface 4610 and the second surface 4630 may be angled relative to the closing direction of the cassette 110. To facilitate a tight bond between the surfaces 4610, 4630, allowing a fluid seal, the mating surfaces are angled such that when a user presses the cover 4660 against the housing 4650, the surfaces push against each other. This seal allows fluid to be delivered substantially vertically through the surface grooves 4620, 4640 by applying pressure to the interior of the housing 4650 at the inlet 4670.

In this embodiment, as well as in all other embodiments in which the cassette 110 has a removable cap or cover 4660, the ability to seal the cover to the housing 4650 is very important. Such sealing may be enhanced by the application of magnetic force. Thus, the cover 4660 may be pressed against the housing 4650 using a magnetic closure. This compression may enhance the integrity of deconstructed siphon 4600.

Forming a good pneumatic seal is more difficult than forming a good hydraulic seal because gas is more likely to traverse smaller seal defects (e.g., gaps or cracks in the seal) than fluid. Typical pneumatic sealing solutions include the use of O-rings or adhesives or fillers, such as thread-lock glue, silicone sealant or teflon tape, which can minimize the gaps through which the gas passes. Such a solution may not be effective enough for the cassette 110 shown and described herein because in many cases, the cassette 110 must have a lid 4800 that can be pneumatically sealed to the docking station 4810 used to pump air into the cassette, and the lid must be further pneumatically sealed with the docking station of the cassette 4820. In addition, in some embodiments, as shown in FIGS. 46A-47B, the deconstructed siphon tube must also include a pneumatic seal to prevent air from leaking into the tube, and a hydraulic seal to prevent syrup from leaking out of the grooves 4620, 4640.

These unique requirements stem from the fact that the cassette 110 must be easily removed from the cassette docking station by an untrained user, the covers and docking station of the cassette 110 must be easily cleaned in a dishwasher or by hand, and the untrained user must be able to easily and repeatedly disconnect and reconnect the AP covers from the AP docking station. The seal must therefore have a minimum gap in which the contents of the cassette can be accommodated, while also being non-permanent and easily coupled and uncoupled with minimum skill.

Thus, as shown in fig. 48, the seal may be provided as a magnetic coupling. In such an embodiment, the magnet 4830 would be located on the cartridge docking station 4810 or the cartridge 110 itself, and the other of the two would have another magnet or ferromagnetic material 4840 for bonding to the magnet. To promote good pneumatic sealing, the magnets may completely surround the pneumatic port, in which case air is pumped from the docking station 4810 into the cassette 110 through the air inlet 4850. The magnet 4830 and/or ferromagnetic material 4840 can thus be provided in an annular shape that completely surrounds the port.

By sandwiching the rubber-like material, a strong seal can be formed. Because the seal is magnetic, the coupling does not require a male/female or male/female fit, and an unskilled user can apply and disengage the coupling.

In some embodiments, to further facilitate proper orientation of the cassette 110 when docked with docking station 4810, additional magnets may be used, or a non-circular shape may be used for the magnets, thereby biasing the coupling orientation to the desired direction.

As shown in fig. 49A-B, magnets can be configured to ensure that the wells 4900 of the cartridge 110 seal against the lid 4910. This configuration can apply a magnetic seal only when the cartridge 110 is docked to the device 100, but the seal will loosen when the cartridge is removed from the device.

As shown, magnet 4920 may be incorporated into base 4900 of cartridge 110 instead of lid 4910. Thus, when lid 4910 is placed on base 4900 and cassette 110 is inserted into device 100, cassette dock 4930 is then placed on top of cassette 110. In this manner, magnet 4920 in base 4900 of cassette 110 is attracted to magnet or ferromagnetic material 4940 in docking station 4930, thereby sandwiching lid 4910 between the two magnetic components. In this way, compression ensures a good seal of base 4900 against lid 4910 and a good seal of lid 4910 against docking station 4930.

Moreover, because of the gripping action of lid 4910, the lid surface that mates with docking station 4930 and base 4900 may be relatively simple, with minimal gaps in which additives may accumulate and become hard and difficult to clean. For example, the mating surface may simply be a flat surface that increases the contact surface area between the components.

The cartridge 110 can be refilled from a refill container. To reduce waste, many systems allow a user to fill a small cartridge, such as a soap dispenser or an ink cartridge, with a large volume of refill liquid container. This is often an inconvenient and cumbersome process, requiring a great deal of effort to avoid spillage. As shown in fig. 50A-50B, to facilitate refilling, a circular magnet (shown as 5005) or similar magnet or ferromagnetic metal shown in fig. 48 may connect the cartridge 110 to the output spout 5010 of the refill container 5000 through the air input aperture 5020 of the cartridge, thereby using the air input as a refill port. Also shown in fig. 50B is a second optional magnet for facilitating orientation of the cover 5050 relative to the base of the cassette 110.

To prevent the refill container 5000 from leaking until it has been properly coupled with the cartridge 110, a cross-slit valve 5030 (also referred to as a "cross-valve" or "slit valve") or other type of one-way or directional biasing valve may be used at the output port of the refill container 5000. The valve will prevent the output of "refill liquid" until the refill container 5000 is squeezed (i.e., sufficient internal pressure is increased to force liquid out through the valve) or until the external projection 5040 pushes against a "tab" of the valve opening 5030, allowing liquid to flow out. The latter projection 5040 may be a nozzle extending around the air input port 5020 on the cartridge lid 5050 such that when the refill container 5000 and lid 5050 are connected by magnetic force (or by some other means) it will automatically pierce the slit valve 5020 of the refill container 5000.

Such a "dripless" mechanism would further allow the refill container 5000 to be permanently "upside down" mounted, as shown in fig. 50C, so that its output spout 5010 is always in a downward position, ready to be dispensed into the cartridge 110. In such an embodiment, a support structure 5060 may be provided for holding the refill container 5000 in a position to which the cartridge 110 may be applied. In such an embodiment, the support structure may provide an additional magnetic or ferromagnetic ring 5070 to secure the refill container 5000 on the support structure 5060.

In some embodiments, a cartridge pre-filled with syrup may be provided to a user instead of or in addition to the refillable cartridge 110. In such embodiments, seals can be placed on the input and output ports of the cassette 110 prior to shipping. Such a seal may prevent spillage of the powder or liquid additive stored in the cartridge. In such embodiments, the device 100 can include a surface or mechanism for puncturing or removing the seal, or the user can remove the seal prior to first using the cartridge 110.

As described above, the flavor and use of the additives from the cassette 110 can be tracked by monitoring the air pumped into the cassette. The additives may take the form of flavored syrups, pH adjusting concentrates, or other fluids, and are typically monitored by controlling and monitoring actuators that control the dispensing of the additives from the cartridge 110 through tubing to a mixing or drinking container (e.g., a user's glass). For example, when using a stepper motor pump, the apparatus 100 may ensure that the pump removes additive having a value of "100 steps" from the additive reservoir and into the mixing container.

However, in many embodiments, such as where the syrup or other additive may have a different viscosity, the usage can be more accurately and precisely tracked by monitoring the output of the cartridge 110. This may be, for example, by monitoring the weight of the additive-filled container, by monitoring the passage of additive through the outlet pipe using a flow sensor (e.g. a paddle wheel based sensor). However, such embodiments require output tubes, or require complex balances or sensors.

Alternatively, the drop sensor 5200 as shown in the system of FIGS. 52A-52B can be used for tracking to count drops output from the cartridge. Fig. 52A shows a proposed arrangement of a drop counter assembly as a partially exploded assembly. Such an arrangement is shown in the side view of fig. 52B. As shown, the droplets may be counted, for example, using an Infrared (IR) emitter 5210 paired with a sensor 5220, which are located on both sides of a vertical channel on which the additive drops. Thus, the default state of an Infrared (IR) beam is to shine from the IR emitter 5210 to the entire channel in the IR sensor 5220, and a drop of additive falling through the channel interrupts the beam 5230 for detection.

By counting the number of drops that fall from the additive cartridge 110 into the mixing container, the device 100 can quantify the dispensing of the additive in a manner that is advantageous for devices that use cartridges that are user openable and that can be refilled by the user with various additives of different viscosities.

Because the user can either 1) remove and replace the cover 5240 of the cartridge 110 or 2) pour syrup of a different viscosity into the cartridge 110, there can be variations in 1) how airtight the AP's cover-body seal is, and 2) how easily the additive is pushed out of the chamber, respectively. Because of these variability, a system that merely controls input parameters (e.g., commands a stepper motor pump to move a certain number of steps) will not be able to accurately dispense a constant amount of syrup from such a cassette 110. Also, by counting the number of drops of additive dropped from the cartridge, the pump can be operated according to the desired number of drops to dispense the desired number of drops.

To ensure that syrup is dispensed from the cartridge 110 at a rate slow enough to produce individual droplets of additive rather than a steady stream, two methods are disclosed. In the first method, if the machine knows the type of syrup in the cartridge, it will also know the viscosity of the currently dispensed syrup, and can select a pump power (e.g., via pulse width modulation voltage control) appropriate for that viscosity. Alternatively, to ensure that the additive is dispensed in the form of a single droplet, the device 100 may gradually increase the supply voltage to the air pump 120 (e.g., by pulse width modulation), or repeatedly turn the pump on and off, until the droplet sensor detects that a droplet has been dispensed. At this point, the device 100 may maintain the voltage at the current level, or may automatically increase the voltage slightly above the current level to ensure continuous and stable dispensing of the droplets.

If the device 100 provides data relating to the level of liquid in the chamber, which can be determined by tracking the syrup output from the chamber or by detecting the amount of fluid remaining, the device can predict a good Pulse Width Modulation (PWM) level to initiate a PWM ramp, since the level required to dispense a droplet is dependent on the current level of liquid in the chamber. In this way, the machine can minimize the time required to dispense the first droplet from the chamber.

In order for the drop sensor to accurately assess the number of drops, it is useful to have the drops always land in a known position. Fig. 53A-53D show a perspective view and a side, front and top view, respectively, of the cartridge 110, the cartridge 110 being provided with a spout 5300 designed to precisely locate a droplet as it is dispensed from the cartridge. Such a cartridge 110 is schematically illustrated in fig. 52A-52B, and may incorporate several features discussed in this specification.

Thus, the cartridge 110 can be provided with a deconstructed siphon, such as shown above in fig. 46A-47B, that includes a first surface 5310 having a first surface groove and a second surface 5320 having a second surface groove. The first surface can be an extension of the cover 5240 of the cartridge 110, while the second surface can be an inner surface of the housing 5340. Although the groove is not shown, the spout 5300 may be an extension of the second surface groove.

As shown, the spout 5300 is generally a downwardly curved channel and is located at a corner 5350 of the cartridge 110. Thus, when the cartridge is docked in the pod docking station 5250 and placed in a known orientation, the drop location of the droplet 5260 rolling off of the spout 5300 will be precisely known.

In addition to knowing the exact location at which a drop will fall, a drop detection system will function best if all drops fall at substantially the same location. Where multiple cartridges 110a, b are used, a single drop sensor will work most efficiently if the multiple cartridges dispense drops at the same or substantially the same location. Accordingly, the number of the first and second electrodes,

thus, the cartridge 110 structure shown in fig. 52A-53D is wedge-shaped, the wedge shape tapering substantially to corner 5350 containing spout 5300, thereby allowing a plurality of such cartridges to be positioned adjacent to one another in the docking station such that the cartridges dispense droplets at substantially the same location. Two such cassettes 110 adjacent to each other are shown in fig. 54. As shown in fig. 55, this arrangement allows the droplet sensor 5200 to detect droplets 5260 from either cartridge 110.

Thus, as shown, embodiments of the apparatus 100 may include: a first flow cassette 110a comprising a first spout 5300a at the flow outlet, the first spout 5300a for dispensing a fluid such as syrup; a second fluid cassette 110b comprising a second spout 5300b at a similar fluid outlet; and a docking position for docking the two cassettes 110a, b. When docked, the first spout 5300a is positioned near the second spout 5300b so that the droplet lands at the same position, which serves as a droplet detection position. Since the cassettes 110a, b are tapered towards their respective spouts 5300a, b, additional cassettes may also be provided such that the cassettes form a segment of a circle.

Alternatively, the outputs from multiple cassettes 110a, b may be adjacent the spouts 5610a, b in other ways. As shown in fig. 56, a plurality of square or rectangular cassettes 110a, b can be retained in the device in an docked position 5600 with their respective spouts 5610a, b rotated towards each other. Accordingly, each cassette 110a, b has a square cover that allows the bay to be placed on the left or right side of the docking position 5600 by rotating the cassette so that the spout opening 5610a, b is oriented toward the center of the docking station of the bay.

To ensure that the spout 5610 is in the desired designated position, the docking position may include a detection mechanism so that proper cartridge orientation can be confirmed. As shown in fig. 57, this may include magnets in the lid 5710 and base 5720, respectively, that must be properly aligned for the cassette to mate with the base. If the magnets are misaligned, the docking position 5600 may reject the cassettes 110a, b or may not function properly.

The magnets 5710, 5720 may also be used to secure the air inlet and may be offset from the center of the corresponding cassette cover 5730 such that an incorrect orientation would not allow the cassette cover 5730 to be connected to the docking location 5600. Alternatively, more magnets are oriented on the corners of the hatch in the north/south direction to prevent the user from misorienting the hatch when it is docked to the hatch docking station.

The drop sensor is shown in fig. 52A-52B as a beam 5230 between two units (typically a laser emitter 5610 and a detection unit 5620). Alternatively, the droplet sensor 5200 may be a capacitive sensor 5800 as shown in fig. 58, or a reflective object sensor 5900 as shown in fig. 59.

Capacitive sensor 5800 can include a single conductive element 5810 (e.g., a single wire, straight or annular) positioned to be in the path of a falling drop 5820 dispensed from pod 110. This type of sensor requires contact or close proximity to a conductive substance (e.g., a falling droplet) to trigger detection. Prior to dispensing a drop 5820, a baseline reading is taken from sensor 5800. Subsequently, to detect when the drop 5820 falls, the microcontroller simply evaluates the reading of the sensor 5800 to obtain a change in capacitance representative of the drop 5820 passing over or contacting the sensor line. Because the capacitive sensor can be as simple and inexpensive as a single wire, it can be mounted on the cassette 110 itself and connected to the machine's circuitry through a conductor-to-conductor connection between the cassette cover 5830 and the cassette docking station 5840.

This capacitive sensor 5800 can also serve a dual purpose, allowing the device 100 to detect when a pod is mounted to the cassette docking station 5840. Because the circuitry for processing the capacitive sensor data resides in the device 100, the capacitance measured by the circuitry changes when the cartridge 110 is mounted to the docking station 5840. This is because by mounting the cassette 110 to the docking station 5840, the capacitive sense circuitry in the machine will couple to the capacitive sense wires 5810 on the cassette 110, effectively "lengthening" the sense wires of the circuitry to extend down onto the cassette. Because of this large change in the sensed capacitance that occurs when the pod is docked with the machine, this large change in capacitance can be assumed to be due to the mounting of the cassette 110 to the cassette dock 5840 if 1) it occurs when the device 100 is not actively dispensing droplets, and 2) the change is within the range that is expected to occur when the cassette 110 is mounted to the dock 5840.

In the event that the capacitive sense wires 5810 do come into contact with the falling droplet 5820, they can be easily cleaned by removing the cartridge 110 from the docking station 5840 and placing it in a dishwasher or by hand. Alternatively, the UV LEDs in the device 100 may be positioned so that they impinge on the capacitive sense lines 5810, thereby continuously ensuring maximum disinfection.

Another type of sensor that can detect liquid droplets is a reflective object sensor 5900, which takes advantage of the fact that water is an Infrared (IR) reflector. Such reflective object sensors include an infrared emitter and an infrared detector that are oriented such that they are at an angle to each other to allow the emitter IR beam to reflect back to the detector if a reflective object is placed at some distance in front of them. The sensor 5900 will be mounted within the device 100 and will not be in contact with the droplet 5820.

FIGS. 60A-60B illustrate an embodiment of a capacitive sensor for use in the device 100 with the cartridge 110. Fig. 60C shows the signal extracted from the capacitive sensor during use. As shown, instead of the sense line 5810 being incorporated into the cassette 110, a capacitive sensor 6000 is located near the dispense position 6010 of the cassette 110. As shown, as droplet 6020 forms at dispensing position 6010, the capacitance in sensor 6000 increases from the baseline. This can be seen in the signal shown in fig. 60C.

As shown in fig. 60B, when the droplet 6020 falls from the dispensing position 6010, the droplet falls outside the detection range of the electrode of the sensor 6000. This is shown as a sudden drop visible in fig. 60C, returning the signal to its baseline. Thus, each spike in fig. 60C represents a droplet 6020 that accumulates within the detection zone and then falls off of the dispensing location 6010.

FIG. 61A shows a first embodiment of a capacitive sensor 6000 for use with multiple cartridges 110a, b. As shown, separate capacitive sensors 6000a, b may be provided for use with each cartridge. In this way, the device 100 may be provided with docking locations for multiple cartridges, and each cartridge may be provided with a separate sensor. Fig. 61B shows an alternative where a single capacitive sensor 6000 is provided for use with multiple cartridges 110a, B by placing such sensors between the cartridges being monitored.

To use the non-contact capacitive electrode 6000 to detect the droplet 6020 when dispensed from the cartridge 110, the dispensing position 6010 of the cartridge is positioned directly above the upper edge of the capacitive sensor 6000, whereby when the droplet 6020 is formed at the dispensing position 6010, the capacitance induced by the electrode increases before the droplet separates from the chamber, as shown in fig. 60C. Then, once the droplet 6020 reaches a size large enough that gravity separates it from the cartridge 110, the droplet will quickly fall outside the 6000 range of the capacitive sensor, causing it to detect a sudden drop in capacitance. This sudden drop may be used to indicate that the droplet 6020 has just been dispensed into the user's container.

Since the carbon dioxide canister is made of metal, such capacitive electrodes may also be used to detect when a user has installed or removed the carbon dioxide canister from the device 100. Thus, when the can is connected, the can may contact the capacitive electrode, thereby changing the capacitance detected by the electricity. This can be achieved in a non-contact manner, since the large amount of metal involved can cause significant changes in the capacitance detected by nearby capacitive electrodes.

Although the present invention has been described with some particularity and detail in connection with what is presently deemed to be the most practical and preferred embodiments of the invention, it is not to be limited to any such detail or embodiment or any particular embodiment, but rather is to be construed with reference to the appended claims so as to provide the broadest possible interpretation of such claims in light of the prior art and, therefore, is intended to effectively encompass the intended scope of the invention. Furthermore, the foregoing describes the invention in terms of embodiments foreseen by the inventor for which an enabling description was available, notwithstanding that insubstantial modifications of the invention, not presently foreseen, may nonetheless represent equivalents thereto.

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