Patent Publication Number: US-9850118-B2

Title: Bag-in-box pump system

Description:
BACKGROUND 
     Often, at restaurants or other locations such as a consumer&#39;s residence, a beverage may be created on-demand from a mixture of ingredients. An advantage of dispensing beverage in this form is that the concentrate containers and water supply typically occupy significant less space than is otherwise required to store the same volume of beverage in individual containers. Moreover, this dispensing equipment likewise eliminates increased waste formed by the empty individual containers. 
     A typical beverage dispenser may include a pump to force an ingredient, such as a concentrate, to the head. The dispenser may include valves that may attempt to volumetrically measure then dispense certain ingredients. For example, a valve may be selectively opened in response to a consumer requesting a beverage to allow the simultaneous discharge of concentrate and water. The two liquids mix upon discharge and in the container to form the desired beverage. Moreover, some beverages are formed from base components that may be vastly different from the components forming other beverages. Often, these beverages cannot be accurately and efficiently dispensed from a dispenser given the problems with measuring and dispensing ingredients with different properties. 
     Similarly, in certain implementations, different beverages are formed from concentrates that are only slightly different from each other. For example, customers are often interested in enjoying beverages that, in addition to a base flavor, include a supplemental flavor, such as cherry or lemon-lime. Yet consumers are increasingly interested in adjusting one or more ingredients in their beverages, such as the amount of sugars, often in the form of high fructose corn syrup. Improved systems and methods relating to the dispensing of beverages would be desirable. 
     SUMMARY OF THE INVENTION 
     Aspects of this disclosure relate to novel methods for dispensing a composition, such as a beverage. In certain embodiments, a bag-in-box package is utilized. The bag-in-box package includes a rigid box and a flexible bag disposed within the box. The flexible bag includes a connector projecting outwardly of the box. A rotary pump is located within the connector. The rotary pump includes a resiliently deformable housing and a rotor that form a plurality of chambers. The bag-in-box package may be incorporated into a dispenser system that includes a touch screen that allows users to input beverage selections. One or more memory devices store audio and video files related to different beverage selections. While a beverage is dispensed, a sound file may be played. For example, a bubbling sound may be played while a carbonated beverage is dispensed. At the same time or alternatively, a video may be played on the touch screen display that shows the fill state of a beverage container. 
     Of course, the methods and systems of various embodiments may include other additional elements, steps, computer-executable instructions, computer-readable data structures or computer system components. In this regard, other embodiments are disclosed and claimed herein as well. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is an exploded view and schematic diagram of an exemplary dispensing system and dispensing head in accordance with one embodiment of this invention; 
         FIG. 2  shows an exemplary embodiment of one dispensing system in accordance with one embodiment of the invention; 
         FIG. 3  is a flowchart of an exemplary method in accordance with one embodiment of the invention; 
         FIG. 4  is a flowchart of an exemplary method in accordance with one embodiment of the invention; 
         FIG. 5  shows a computer device that may be used to control the operation of a beverage dispenser, in accordance with an embodiment of the invention; 
         FIG. 6  illustrates a bag-in-box dispensing system in accordance with an embodiment of the invention; 
         FIG. 7  illustrates an exemplary rotary pump that may be used with various embodiments of the invention; 
         FIG. 8  illustrates a bag-in-box dispensing system that utilizes a water powered motor to drive a rotary pump, in accordance with an embodiment of the invention; 
         FIG. 9  illustrates a beverage dispensing system in which a water driven pump drives multiple rotary pumps, in accordance with an embodiment of the invention; 
         FIG. 10  illustrates a gear mechanism that harnesses energy from a diluent stream to drive a rotary pump, in accordance with an embodiment of the invention; and 
         FIG. 11  illustrates an electronically controlled beverage dispensing system, in accordance with an embodiment of the invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
       FIG. 1  illustrates an exemplary dispensing system  102  that may be configured to dispense a beverage comprising a plurality of ingredients. While the exemplary dispensing system  102  will be described in the context of dispensing a beverage, those skilled in the art will appreciate that other compositions, such as medicaments, lotions, supplements, condiments, may be dispensed according to the teachings of this disclosure. Looking to  FIG. 1 , the exemplary dispensing system  102  includes a dispensing head  104 , and a counter-located base  106 , to which the dispensing head  104  may be removably mounted. Reservoirs  110   a  and  110   b  may store ingredients configured to be dispensed from dispensing system  102 , such as flavored concentrates that may be in different forms, such as liquids (including syrups) or powders. Pumps  114   a  and  114   b  may be connected to reservoir  110   a  and  110   b , respectively. The pumps  114   a  and  114   b  allow the movement of the associated ingredient through base  106  and into the dispensing head  104 . A portion of the ingredients may comprise water (for example, see elements  112   a  and  112   b ). In one embodiment, one water source may supply a noncarbonated water stream. The second source may include a carbonator (not illustrated) that supplies carbon dioxide to the water stream it supplies through base  106  into the dispensing head  104 . In another embodiment, the water source may be substantially devoid of carbonation. In yet other embodiments, a plurality of water sources may be configured to provide different levels of carbonated water. 
     The tubing  108  through which the four illustrated fluid streams flow into the base  106  may terminate at mounting block  116 . As seen in  FIG. 1 , mounting block  116  may be removably mounted to the dispensing head  104 . In the illustrative embodiments, mounting block  116  may have a front face  117  comprising passageways  118  to one or more reservoirs for one or more ingredients such as concentrate  110   a / 110   b  and/or water  112   a / 112   b . The passageways  118  may be integrally formed with and extend from the block front face  116 . The front face  116  and/or another portion of the mounting block  116  may further comprise a locking mechanism for aligning and ensuring proper fitting between the passageways  118  and the dispensing head  104 . 
     The illustrated dispensing head  104  includes a vertical back plate  118  from which a base plate  120  extends horizontally. Back plate  118  may be removably coupled to dispensing unit mounting block  116  and a valve body  132  may be seated on the base plate  120 . A nozzle assembly  122  is shown to extend below the base plate  120 . Valve body  132  may comprise a plurality of conduits  130  through which the ingredients flow into nozzle assembly  122 . One or more valve units may be mounted to the valve body  132 . For example, valve units  134  and/or  136  may regulate the flow of a separate one of the fluid streams through the dispensing head  104  and out of the nozzle assembly  122 . 
     The dispensing system  102  may comprise one or more computer-readable mediums, such as circuit board  129 . Circuit board  129  is shown mounted to the base plate  120  and may comprise the electrical components (not illustrated) that are used to regulate the actuation of pumps  114   a  and  114   b  and/or valve units  134 ,  136 . Circuit board may also comprise computer-readable instructions that when executed by a processor, such as processor (such as processor  206 , described in more detail below in relation to  FIG. 2 ) to provide energization signals to valve units  134 ,  136 , control signals to the pumps  114   a  and  114   b , and/or feedback signals from the dispensing head  104  to the dispensing system  102 . 
     Historically, electronic circuitry  129  (or another component comprising a computer-readable medium, comprised a “flavor chips.” The flavor chip comprised computer-executable instructions, that when executed by a processor, would execute a method for mixing a predefined beverage. Unfortunately, past flavor chip technology had to be adapted to the mechanical properties of each dispenser and each flavored beverage required a separate flavor chip. Thus, in certain prior art systems, changing beverages to be dispensed from a dispenser would require the new flavors to be “mapped” onto the chip. For example, each parameter had to be adjusted to ensure the dispensed beverage received the intended proportions of ingredients. Aspects of the invention relate to systems and methods for dispensing custom beverages that do not require the inconvenience of mapping of different flavor chips for each possible combination of the various ingredients. 
     While  FIG. 1  shows one exemplary dispensing system  102 , those skilled in the art will readily appreciate that other systems that are either configured or able to be modified to dispense a multi-ingredient beverage according to one or more teachings of this disclosure are within the scope of the invention. Further exemplary systems, including exemplary heads and/or nozzles that may be selectively combined are disclosed in Assignee&#39;s U.S. patent application Ser. No. 10/412,681, BEVERAGE FORMING AND DISPENSING SYSTEM, filed Apr. 14, 2003, U.S. Patent Pub. No. 2004/0084475 A1, published May 6, 2004, and/or U.S. patent application Ser. No. 11/118,535, BEVERAGE DISPENSING SYSTEM WITH A HEAD CAPABLE OF DISPENSING PLURAL DIFFERENT BEVERAGES, filed Apr. 29, 2005, U.S. Pat. Pub. No. 2006/0097009, which are incorporated herein by reference in their entirety for any and all purposes. 
       FIG. 2  shows an exemplary dispensing system  202  that may be configured for use without prior art flavor chips to dispense custom beverages. Dispensing system  202  may be configured to implement novel methods, such as the methods shown in the flowchart of  FIG. 3 . In this regard, certain novel features of dispensing system  202  will be described in relation to the methods of  FIG. 3 , however, the novel apparatus shown in  FIG. 2  is not limited to only these methods but are merely provided to demonstrate exemplary uses of dispensing system  202 . As seen in  FIG. 2 , dispensing system  202  comprises an electronic circuitry  129 , which may be identical or similar to electronic circuitry  129  shown in  FIG. 1 . Electronic circuitry  129  comprises a computer-readable medium  204  which may be magnetic, digital, optical, or any format configurable to comprise computer-executable instructions that may be executed by a processor, such as processor  206 . 
     Processor  206  may be configured to execute instructions on the computer-readable medium, such as computer-readable medium  204 , received from a user input device  208 , lever switch  210  and/or a network connection  212 . The user input device  208  may include any components or group of components (including a switch similar or identical to lever switch  210 ) that allows a user to provide an input to dispensing system  202 , which may be mechanical, electrical, or electromechanical. Novel uses of user input device  208  may be implemented in accordance with one or more novel methods described herein. As one example, user input device  208  may be used in conjunction with step  302  shown in  FIG. 3 . At step  302 , instructions may be received for dispensing a beverage. In one embodiment, user input device  208  may allow a user to instruct dispensing system  202  to dispense a specific beverage formula. In one embodiment, user input device  208  may comprise a touch screen that is in operative communication with electronic circuitry  129 . The touch screen may be configured to display a plurality of beverage classes. For example, in one embodiment, the classes may include, but are not limited to: colas, diet colas, energy drinks, water, fruit juices and combinations of any of these groups. In certain embodiments, a user may be able to pick a beverage class from a group of classes. In various embodiments, the display of possible beverage for selection may be adjusted based upon the levels or presence of specific ingredients detected in dispensing system  202 . 
     The touch screen may be configured to allow a user to first select a specific brand of beverage, such as a particular energy drink from a plurality of energy drinks. Still yet, the touch screen may allow a user to pick a specific commercially available beverage and further refine the ingredients to be dispensed to form a similar beverage. In one embodiment, the refined beverage has the same ingredients, however, comprises different proportions or amounts of the ingredients. For example, a user may first select the cola beverage “Pepsi,” and then wish to adjust one or more parameters of the Pepsi to be dispensed. For example, the user may wish to adjust the sugar content and/or carbonation of the beverage to be dispensed. In another embodiment, the refined beverage has at least one different ingredient, for example; at least a portion of the high fructose corn syrup may be replaced with various levels of one or more ingredients. 
     While the exemplary embodiment was described in relation to a touch screen, other input devices may be used in combination with or in lieu of a touch screen. For example, a user may swipe a card having electronic information a sensor, such as for example, an optical, magnetic, or RFID sensor to provide a user input. In another embodiment, the user may utilize a biometric input to provide an input. Yet in other embodiments, the user may enter alphanumeric inputs using a keyboard. The lever switch  210  may also be operatively connected to electronic circuitry  129  to provide an input indicative that a receptacle is placed under the nozzle  122 . 
     Network connection  212  may also provide one or more user inputs (as well as transmit outgoing signals) coupling dispensing system  202  to a communication network, such as a LAN or the Internet. The dispensing system  202  (and other devices) may be connected to a communication network via twisted pair wires, coaxial cable, fiber optics or other media. Alternatively, radio waves may be used to connect one or more beverage dispenser systems to the communication network. In one such embodiment, one or more dispensing systems may be in communication with each other and readily transmit and receive information regarding other dispenser systems, including a unique formula dispensed to a particular user. In one embodiment, a plurality of dispensing systems may each be coupled to each other through a central server. Yet in another embodiment, the dispensing systems may communication directly with each other. Thus, in one or more embodiments, electronic circuitry  129  may include computer-executable instructions for transmitting information to other dispensers and/or a server. 
     Step  304  of  FIG. 3  may be implemented to dispense a first ingredient into a conduit of the dispensing system  202 . Looking to the exemplary dispensing system  202  in  FIG. 2 , a first conduit, such as conduit  214  may also be connected (for example, through a series of valves and/or through tubing  108 ) to a beverage ingredient source (such, as for example concentrate(s)  110   a / 110   b ). During beverage preparation and dispensing, one or more ingredients, such as water  112   a / 112   b  and/or concentrates  110   a / 110   b  may pass through the first conduit  214 . Conduit  214  is merely exemplary, as additional or fewer ingredient sources may be upstream or downstream from conduit  214 . Moreover, dispensing system  202  may comprise a plurality of conduits, such as second conduit  216 . The second conduit  216  may be in connection with one or more ingredient source, such as water  112   a / 112   b  and/or concentrates  110   a / 110   b . In the illustrative dispensing system  202 , the first conduit  214  and the second conduit  216  diverge at the nozzle  122 , where ingredients may be mixed and dispensed from the dispensing system  202 . 
     Regarding the nozzle  122 , the illustrated dispensing system  202  of this invention may includes the single dispensing head  104  (shown in  FIGS. 1 and 2 ) with plural passageways, such as conduits  214 ,  216  (shown in  FIG. 2 ) through which concentrated ingredients may flow. Valve units  124 ,  126 , and  128  may operate independently from each other and be independently controlled. Thus, the disclosed systems  102 ,  202  may be constructed so that a single dispensing head  104  may be used to discharge beverages blended from any one of two or more distinct ingredients (such as concentrates) to a single nozzle  122 . In certain embodiments, this may eliminate the need to provide the system  102  with multiple dispensing heads wherein each head is employed to dispense a single beverage. Other embodiments, however, may implement a plurality or heads and/or nozzles. Regardless of the quantity of nozzles utilized, those skilled in the art will appreciate that valves  124  and  126  may be simultaneously opened to discharge a beverage that is a desirable mixed blend of two or more concentrates or other ingredients. 
     Dispensing head  104  may be further designed so that the passage of one or more ingredients comprising carbonated water is discharged has a tapered increase in cross-sectional area along its length as measured starting from the top to the bottom. That is, a conduit or passage within dispensing system may be narrow at the high pressure end and widens considerably, to as much as ten times its width at the low pressure end. Consequently, as the water and gas fluid stream flows through a tapered passage, the pressure of the gas bubbles in the stream may decrease continually but gradually. This gradual decrease in pressure reduces the extent the carbon dioxide, upon the discharge an outlet breaks out of the fluid stream. The reduction of carbonation breakout serves to ensure that the blended beverage has sufficient gaseous-state carbon dioxide to impart a desirable taste. 
     Conduits  214 ,  216  may comprise a plurality of sensors to measure one or more parameters of one or more ingredients that travel through the respective conduit  214 ,  216  to the nozzle  122 . The measured parameters of a first ingredient may be used to adjust the amount or parameter of a second ingredient to be dispensed. Yet in other embodiments, the measured parameters of the first ingredient may be used to dispense the amount of that ingredient being dispensed. In certain embodiments, several parameters may be measured within conduit  214  and/or conduit  216 . In one embodiment, steps  306 ,  308 , and/or  310  may be implemented to measure the temperature, viscosity, pH, flow rate, and/or pressure of a first ingredient in the first conduit. In one embodiment, step  306  may comprise the implementation of temperature sensor  218  (shown in conduit  214 ), step  308  may include measurements with flow rate sensor  220  (shown in conduit  216 ) and step  310  may comprise measurements from PSI meter  222  (shown in conduit  214 ). While, the sensors are shown in two different conduits ( 214 ,  216 ), those skilled in the art will appreciate that both (and additional) conduits may have each of the above-described sensors as well as additional sensors. 
     Step  312  may also be implemented to determine if the ingredient (or one of the ingredients) is a non-Newtonian fluid. This determination may be based one or more measurements of steps  308 - 310  and/or based upon known information regarding the ingredient. For example, an electronic signal may be transmitted from the electronic circuitry  129  that is indicative that the ingredient(s) in at least one conduit  214 ,  216  is/are non-Newtonian. If at step  312 , it is determined that the ingredient is non-Newtonian, step  314  may be implemented. At step  314 , one or more sensors may detect or otherwise measure the shear stress and/or strain rate of the ingredient(s). In one embodiment, a first sensor in a first conduit  214  may be used to detect the flow rate of a first fluid; however, a second sensor in the same first conduct  214  may be used to detect the flow rate of a second fluid. 
     In those embodiments, where the ingredient is non-Newtonian, the shear stress could utilize sensors to first measure the gradient of for example, by using a first sensor to measure the gradient of the velocity profile at the walls of the conduit  214 ,  216 . Computer-executable instructions on computer-readable medium  204  may use processor  206  to multiply the signal from the first sensor by the dynamic viscosity to provide the shear stress of that particular ingredient or combination of ingredients. In one embodiment, one or more micro-pillar shear-stress sensors may be used in conduit(s)  214 ,  216 . The micro-pillar structures may be configured to flex in response to the drag forces in close proximity to the outer perimeter of the conduit(s)  214 ,  216  (i.e., the walls). The flexing may be detected electronically, mechanically, or optically. The result of the flexing may be received as an electronic signal by computer-executable instructions on computer-readable medium  204 . Processor  206  may utilize the received electronic signal to determine wall-shear stress. As discussed above, one or more of the conduits  214 ,  216  may comprise a temperature sensor  218 , which may transmit electronic signals as an input to electronic circuitry  129 . The input from temperature sensor  218  may also be used in conjunction with one or more other sensors to determine the viscosity of an ingredient of composition comprising a plurality of ingredients. 
     Further aspects of the invention relate to novel uses of adjustable orifices. For example, in certain embodiments, rather than implement the volumetric measurement then dispensing of ingredients, adjustable orifices may be used to simultaneously measure and dispense ingredients. For example, as an ingredient (or compositions having a plurality of ingredients) flows through a conduit, flow meter  220  and temperature meter  218  may determine the viscosity of the ingredient. Based upon the parameters detected by meters  218  and  220 , information may be received from the electronic circuitry  129  that adjusts, rather than merely opening or closing, an orifice (see, e.g., elements  126  and  224  within conduit  214  within the conduit  214 ,  216 ). In certain embodiments, this may result in a more homogeneous combination of the ingredients. In other embodiments, it may result in less wear and tear on the dispensing device  202 . In yet further embodiments, it may result in more efficient measurements of ingredients. Obtaining accurate measurements of ingredients may be of special importance, for example, when dealing with micro-nutrients, such as nutrients that comprise less than about 5% of the entire beverage or composition. In certain embodiments, a first ingredient may be dispensed from dispensing system  202  or at about 6% of the final beverage. 
     In one embodiment, the flow rate of at least one ingredient may be adjusted by the same mechanism that measures the flow rate. For example, exemplary flow rate sensor  220  (shown in conduit  216  of  FIG. 2 ) may comprise a turbine or a paddle meter that is configured to measure the flow rate of an ingredient within conduit  216  (this measurement may be conducted in cooperation with information received from one or more other sensors within dispensing device  202 ). Based upon the determination of the flow rate, electronic circuitry  129  may transmit a signal that causes a drag placed upon at least a portion of sensor  220  (such as a turbine or paddle portion) thus acting as a restrictive orifice, such that the quantity of ingredient that is dispensed through conduit over a predetermined period of time is reduced. Likewise, electronic circuitry  129  may transmit a signal that causes less drag placed upon at least a portion of sensor  220 , (i.e., at least a turbine or paddle), thus acting to increase the quantity of ingredient that is dispensed through conduit over a predetermined period of time is reduced. This may occur during or before step  316 , in which it is determined whether further ingredients are to be dispensed. In further embodiments, one or more parameters of any ingredient being dispensed may be adjusted based upon information received from one or more sensors (such as sensors  218  and/ 220 ). For example, the carbonation levels of the ingredient may be altered to adjust the viscosity of the ingredient being dispensed. 
     Further, in the preparation of certain compositions to be dispensed, it may not be desirable to dispense a first ingredient under the same pressure as a second ingredient (for example, when dispensing a second ingredient at step  318 ). In some instances, it may be desirable to reduce the pressure under which a first ingredient is dispensed, in yet other embodiments; it may desirable to increase the pressure that an ingredient is dispensed, for example, to ensure proper mixing or the intended profile of the beverage. In certain embodiments, adjustable orifices may be implemented to ensure the optimal flow rate is implemented for certain ingredients. For example, computer-readable instructions may be used to achieve the optimal combination of pressure and flow rate of an ingredient passing through a conduit  214 ,  216 , such as by use of an adjustable orifice. A simplified graphical illustration is shown by way of element  226 . As seen by element  226 , adjusting an input, such as through a step motor (for example “35°”, “55°”, or “75°”) may be used to obtain a preferred combination of flow rate and pressure. Those skilled in the art will readily appreciate that element  26  is merely illustrative and that other implementations, including the use of more than three adjustable settings, are within the scope of this disclosure. 
     At step  320 , information regarding the dispensed beverage or composition may be stored on a computer-readable medium, such as computer-readable medium  204 . The computer-readable medium of step  320  is not, however, required to be within or local to the dispensing system  202 . Instead, the information regarding the dispensed beverage may be transmitted through network connection  212  to a remote computer-readable medium. In one embodiment, the unique composition dispensed through the implementation of one or more methods shown in  FIG. 3  may be received at a second dispensing system, which may dispense the substantially the same beverage or composition. 
       FIG. 4  shows a flowchart of an exemplary method in accordance with one embodiment of the invention. At step  402 , it may be determined whether a custom beverage comprises a carbonated ingredient, such as carbonated water. In one embodiment, steps  404  and/or  406  may be performed to select a carbonation source (step  404 ) and adjust the carbonation of the selected source (step  406 ). For example, at step  404 , it may be determined that the beverage requested contained carbonated water, however, the user requested that the beverage comprise less high fructose corn syrup, therefore the carbonation levels of the beverage may be reduced. Commonly assigned U.S. patent application Nos. 12/703,048 and 12/703,003, which are disclosed herein by reference in their entirety, disclose systems and methods relating to the creation and dispensing of novel beverage compositions. In one embodiment, the level of carbonation (or any gas) of a second ingredient is adjusted based upon electronic signals received from one or more signals regarding measurements from sensors measuring parameters of a first ingredient. Such parameters may be the flow rate, viscosity, pH, pressure, level of carbonation, level of constituents, such as sugar, water, coloring, etc., and/or any combination of these and other parameters that relate to the first ingredient. 
     In certain embodiments, the carbonation source selected in  404  may be one of a plurality of sources. For example, different sources may comprise various levels of carbonation; therefore, one source comprising the closest amount of carbonation needed may be selected before adjustment. In certain embodiments, dispensing system  102 ,  202  may selectively discharge streams of carbonized and non-carbonized water from separate containers, for example, reservoirs  112   a - 112   b . Therefore, in certain implementations, the dispensing head  104  can be employed to dispense beverages selectively made from either carbonized or non-carbonized water. Alternatively, the dispensing head  104  may be used to dispense a beverage comprising carbonated water and non-carbonated water. In one embodiment, adjustable orifices are opened simultaneously to cause the simultaneous dispensing of both carbonated and non-carbonated water. This is useful when it is desired to blend these two liquids with a concentrate to produce a lightly carbonated beverage. In one embodiment, by varying the amount of time each orifice is open at one or more predetermined diameters, the extent to which the water supplied for the beverage may be set anywhere between fully carbonated (100% carbonated water supply) to no carbonation (100% non-carbonated water supply). 
     In yet other embodiments, step  410  may be used to create a carbonation source. In one embodiment, a first conduit such as conduit  214  may comprise water and conduit  216  may comprise carbon dioxide gas. Thus, based upon the sensors  218 ,  220 ,  222 , and/or other sensors within conduits  214 ,  216  or elsewhere within dispensing system  202 , the amount of water that is combined with the carbon dioxide gas is determined and dispensed, such as through an adjustable orifice. Regardless of whether steps  404  and  406  or step  410  is implemented, step  408  may be initiated. In one embodiment, the resultant carbonated ingredient may be dispensed into a conduit, such as conduits  214  and/or  216 . (see, e.g., step  304  of  FIG. 3 ). 
     It should further be appreciated that not embodiments have all of the above-described features and/or include each step and/or process of the disclosed methods. For example, certain embodiments may be provided with different quantities of fluid passageways and valve units than have been described above with respect to the illustrated embodiments. It is anticipated that these alternative embodiments of the invention may be used to provide a means for forming a beverage from a combination of a plurality of ingredients, which may be discharged from a either a plurality of nozzles or, alternatively, a single nozzle. Moreover, one or more nozzles may be configured to provide a discharge passage that extends vertically downward. Yet in other embodiments, one or more discharge passages for ingredients may have a spiral or helical configuration. While the exemplary dispensing system  102  shown in  FIG. 1  may be used in a commercial setting, for example, a restaurant, those skilled in the art will readily appreciate that the teachings of this disclosure may be applied to any dispensing system, such as implemented in bar gun technology and/or residential use. Further, embodiments within the scope of this disclosure may be used with frozen beverages and/or non-carbonated beverages. 
       FIG. 5  shows a computer device  500  that may be used to control the operation of a beverage dispenser, in accordance with an embodiment of the invention. Device  500  may include at least one network interface  502  for receiving and sending data traffic, a central processor  504  and a system memory  506 . Interface  502  may be any type of network interface well known to those skilled in the art. Network interface  502  may be used to connect device  500  to a network, such as the Internet  528 , and various devices and servers, such as server  530 . Central processor  504  may be implemented with a variety of different central processing units. The structure of system memory  506  is well known to those skilled in the art and may include a basic input/output system (BIOS) stored in a read only memory (ROM) and one or more program modules such as operating systems, application programs and program data stored in random access memory (RAM). 
     Device  500  may also include a card reader  508 , such as a radio frequency identification (RFID) card reader for reading information stored in an RFOD tag  510  attached to a card  512 . A recipe database  514  may be used to store a variety of beverage recipes. Some of the recipes may be custom recipes created by users. A preferences database  516  may store preferences selected by users. 
     Device  500  may be configured to provide audio and/or video information while drinks are dispensed. An audio card  518  may be included to drive a sound device, such as a speaker  520 . A video card  522  may be included drive a video display  524 . Audio and video cards are conventional components and are widely available. Video display  524  may be implemented with a liquid crystal display (LCD), light emitting diode (LED) display or any other type of display. In one embodiment, display  524  is a touch screen and is attached to the front of the dispenser. The touch screen may be configured to receive beverage selections from users. 
     The various components within device  500  may be connected with a system bus  526 . System bus  526  may be any of several types of bus structures including a memory bus or memory controller, a peripheral bus, and a local bus using any of a variety of bus architectures 
     In operation device  500  may receive beverage selections at a touch screen and provide audio and/or video information to the user. For example, speaker  520  may generate a sound that changes as a container is filled with a beverage. The sound may correspond to the fill state of the beverage and/or the type of beverage. The volume and tempo of the sound may increase as the container is filled. In one embodiment a bubbling sound is played when carbonated beverages, such as colas, are selected. A non-bubbling sound may be played when noncarbonated beverages, such as fruit juices, are selected. 
     Display  524  may display an image  532  that is updated to reflect the fill state of a cup or other container. Image  532  may also show beverage ingredients flowing into the container. Ingredients may have different colors or other appearances. 
       FIG. 6  illustrates a bag-in-box dispensing system in accordance with an embodiment of the invention. A bag-in-box container  602  may contain a concentrate  604 . Bag-in-box  602  may include a collapsible bag surrounded by a relatively rigid box. A connector  606  is included to connect bag-in-box  602  to another component. Connector  606  may include a rotary pump that is used to dispense fluid from bag-in-box container  602 . In some embodiments, pump  608  is molded into connector  606 . An exemplary rotary pump is described in detail below. A drive source  610  may be included to drive rotary pump  608 . 
     The bag-in-box dispensing system shown in  FIG. 6  may include several additional conventional components. In one embodiment, a valve  612  is used to control the dispensing of water from a water source  614 . Water source  614  may contain carbonated water. Of course, in various embodiments of the invention water may be replaced with another diluent. Water and concentrate may be mixed at a nozzle  616 . 
       FIG. 7  illustrates an exemplary positive displacement pump such as a rotary pump  700  that may be used with various embodiments of the invention. Rotary pump  700  includes a resiliently deformable housing  702  and a rotor  704  that form a plurality of chambers  706   a ,  706   b ,  706   c  and  706   d . Housing  702  may be formed of plastic, such as polyethylene or polypropylene. Rotor  704  may also be formed of plastic. In some embodiments, rotor  704  is formed of a metal such as stainless steel or a magnetic material encapsulated in lubricous plastic material. In operation, chambers  706   a ,  706   b ,  706   c  and  706   d  rotate around axis  708  and transport fluid from an inlet port  710  to an outlet port  712 . Rotary pump  700  may be used for metering the transfer of fluid from inlet port  710  to outlet port  712 . Of course, other embodiments may include additional inlet ports and/or outlet ports. Quantex provides pumps that may be used with aspects of the invention. 
     Rotor  704  may be driven by an external motor. In one embodiment, the motor may be part of a tube that connects to the connector that contains the rotary pump. The motor may include a shaft that is physically formed to engage with specific rotors. This embodiment may prevent improper installation and the use of counterfeit products. In embodiments that utilize a metal or magnetic rotor, the motor may be magnetically coupled to the rotor. In one embodiment of the invention, the bag-in-box container may include an RFID tag that includes information necessary to drive a pump, such as a rate of revolution to obtain a desired metering of concentrate. 
     Placing a relatively low cost rotary pump within a bag-in-box container can result in a low cost disposable fluid storage system. Moreover, since the pumps will only be used when emptying and/or filling the bag-in-box containers, use and failure rates will be relatively low. 
       FIG. 8  illustrates a bag-in-box dispensing system that utilizes a water powered motor to drive a rotary pump, in accordance with an embodiment of the invention. A bag-in-box container  802  includes a connector  804  that includes a rotary pump  806 . A motor  808  is driven by a pressurized diluent stream, such as a water stream  810 . A gear mechanism between motor  808  and rotary pump  806  may control the amount of concentrate dispensed from pump  806 . In one embodiment, motor  808  and rotary pump  806  are configured so that concentrate is dispensed at a ratio of five parts water to one part concentrate. Various other embodiments may utilize ratios of 1 to 1 up to 1 to 100. The same water that is used to drive may motor  808  may be mixed with the concentrate output by rotary pump  806  to form a beverage. Of course, motor  808  may be driven by fluids other than water. 
     One or more fluid driven motors may be used to drive multiple rotary pumps.  FIG. 9  illustrates an embodiment in which a diluent driven pump  902  drives rotary pumps  904  and  906 . Gear mechanisms between motor  902  and rotary pumps  904  and  906  may be set to control the amounts of diluent, a first concentrate  908  and a second concentrate  910  mix at a nozzle  912 . 
     Those skilled in the art will appreciate that embodiments of the invention may use a variety of mechanical configurations to harness energy from a diluent stream to power a rotary pump.  FIG. 10  illustrates an example in which a diluent stream enters an inlet port  1002  and rotates gears  1004  and  1006 . Gear  1004  rotates gear  1008 . A shaft, not shown, may be connected to gear  1008  at axis  1010  and may be used to drive a rotary pump. The diluent stream leaves via an outlet port  1012 . 
       FIG. 11  illustrates an electronically controlled beverage dispensing system, in accordance with an embodiment of the invention. A bag-in-box container  1102 , flavor sources  1104  and  1106 , additive source  1108  and water  1110  are connected to a dispensing valve  1112 . Bag-in-box container  1102 , flavor source  1104  and additive source  1108  may be packaged in containers that include rotary pumps  1114 ,  1116  and  1118 . The dispensing of fluids from flavor source  1106  and water  1110  are controlled by valves  1120  and  1122 . In operation a user may select a beverage or recipe via touch screen interface  1124 . A controller  1126  then controls appropriate pumps and valves to dispense the selected beverage or recipe. Of course numerous additional or alternative beverage components may be included. The beverage components may be stored in mircro-catridges, bag-in-box containers or other containers and may be in the form of powders, films, gels, liquids or other forms of ingredients. 
     While the invention has been described with respect to specific examples and to presently preferred modes of carrying out the invention, those skilled in the art will appreciate that there are numerous variations of the above described systems and methods that may fall within the spirit and scope of the invention. It should be further noted that certain aspects of the present invention have been described herein, but the invention is not limited to the embodiments described. The following claims demonstrate the breadth of the invention.