The present invention relates generally to improvements for a beverage dispenser, and, more particularly, to systems for dispensing high volumes of a beverage.
It is known in the art to provide machines for dispensing hot whipped beverages, such as cappuccino, hot chocolate, etc. While it is desirable to dispense such beverages at higher flow rates to fill larger volume containers, it may be undesirable to provide a higher flow rate during beverage whipping, because the higher flow rate might induce over-foaming in the beverage. What is needed in the art is an improved beverage dispenser to overcome this and/or other disadvantages of the prior art.
Disclosed herein is an improved beverage dispenser for enabling a higher flow rate for dispensing a beverage and a lower flow rate for whipping the beverage upstream of the dispensing.
In a preferred embodiment of the invention, a beverage dispenser system is provided that includes a beverage dispenser. Additionally, the beverage dispenser system may include amounts of a beverage constituent, such as powdered cocoa or cappuccino, and/or one or more containers for receiving the whipped beverage, such as a larger-volume box container and/or a smaller volume container, e.g., a cup.
In some aspects, the beverage dispenser includes a high volume dispense section having a plurality of flow paths. In connection with a first amount of a beverage constituent, a first flow path can be provided with a first whipping assembly for whipping a first supply of a beverage having a first flow rate through the first flow path.
In connection with a second amount of the beverage constituent (for that same beverage), a second flow path can be provided with a second whipping assembly for whipping a second supply of the beverage having a second flow rate through the second flow path. Means are provided for dispensing the first and second supplies at a dispensing flow rate greater than the first and second flow rates individually. In some embodiments, the dispensing flow rate can be the sum of the first and second flow rates, though such is not required. The box container can be positioned in a large volume container receiving area of the beverage dispenser.
In some aspects, the beverage dispenser includes a low volume dispense section, such that the beverage dispenser is capable of filling both a cup and the quick-filling box container. In connection with a third amount of the beverage constituent, a third flow path can be provided with a third whipping assembly for whipping a third supply of a beverage having a third flow rate through the third flow path. Means are provided for dispensing the third supply at a second dispensing flow rate less than the dispensing flow rate of the high volume dispense section. The cup container can be positioned in a small volume container receiving area of the beverage dispenser.
Additional features, functions and benefits of the disclosed beverage dispenser and methods of use shall be apparent from the detailed description which follows, particularly when read in conjunction with the accompanying figure.
For a more complete understanding of the present invention, reference is made to the following detailed description of exemplary embodiment(s) considered in conjunction with the accompanying drawings, in which:
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The beverage dispenser 12 includes a housing 20 and is provided with a front control panel 22. The beverage dispenser 12 is provided with first and second receiving areas 24, 26 at which the box 16 and the cup 18 may be respectively positioned for fluid communication with a high volume dispense section 28 of the beverage dispenser 12 and a low volume dispense section 30 of the beverage dispenser 12, respectively. The front control panel 22, which is in electrical communication with an electronic control unit (not shown), includes a button, referenced herein as a high volume dispense button 32, for having the electronic control actuate the high volume dispense section 28 of the beverage dispenser 12 for a high-volume outflow of beverage into the box 16. The front control panel 22 further includes a button, referenced herein as a low volume dispense button 34, for having the electronic control actuate the low volume dispense section 30 of the beverage dispenser 12 for a low-volume outflow of beverage to the cup 18. A stop button 36 can be provided for interrupting midstream the outflow of beverage to the box 16 and/or the cup 18. It is contemplated that user interface elements additional and/or alternative to buttons 30, 32, 34 can be provided with the beverage dispenser 12.
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The first mixing bowl 64a can include a first mixing bowl inlet 66a for receiving the first amount of beverage constituent 14a from the first vent cap outlet 60a and for sending steam thereto. The first mixing bowl 64a includes a first feed 68a for receiving hot water from the water tank 42 and a first mixing bowl outlet 70a for communication of the first supply of beverage from the first mixing bowl 64a to a first whipping chamber 72a.
In preferred embodiments of the invention, the mixing bowl 64a is an open bowl-like device that receives the hot water from the feed 68a. The feed 68a preferably comprises a side port, which directs the water tangentially into a circular swirling pattern. Into this, the dry powder, for example, is introduced from above. The powder drops through the open vent cap 56a and into the bottom of the first mixing bowl 64a. The water and powder drains through the first mixing bowl outlet 70a, e.g., a lower opening at the bottom of the first mixing bowl 64a, and into the first whipping chamber 72a.
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Whipping means, such as a first whipping disc 78a, is positioned within the whipping chamber 72a. The whipping disc 78a preferably includes a series of smooth protrusions 80a and grooves 82a for low turbulence mixing to minimize over-foaming. The first whipping disc 78a is provided with a central opening 84a for receiving a motor shaft (not shown) that drives rotation of the first whipping disc 78a. The whipping means provided with the whipping chamber 72a can comprise more than one whipping discs 78a, e.g., a pair may be included. The whipping disc(s) 78a provide a gentle mixing action, providing reduced foam build-up before dispensing into the waiting container. Additional and/or alternative whipping means is contemplated. For example, referring to
In preferred embodiments of the invention, the first whipping chamber 72a comprises a closed cylindrical chamber. The first whipping chamber inlet 74a comprises a top opening to accept the pre-mixed product, which gets fully mixed by a whipping action created by the spinning of the first whipping disc(s) 78a located centrally within the first whipping chamber 72a. The fully mixed and whipped product drains out of the first whipping chamber outlet 76a, which comprises a bottom opening, and into a nozzle, such as a first inlet segment 86 of a twin-feed nozzle 50. The nozzle 50 directs the beverage into a waiting large-volume container, such as box 16, placed below the nozzle.
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In preferred embodiments of the invention, the same components are used in each of the first and second flow paths 46, 48, such that the high volume dispense section 28 includes two of each components, and the first and second flow paths 46, 48 are arranged in a parallel path in order to obtain increased flow rate to the box 16. A twin-feed nozzle 50 is provided that combines the two product streams into a common dispensing stream for the waiting container spout. In some embodiments, three, four, or more parallel paths can be provided with a multi-feed nozzle to further increase flow rate to a higher-volume container.
It is contemplated that dispensing means can be provided in which the first supply of the beverage and the second supply of the beverage are not mixed with one another. For example, the dispensing means can include a first nozzle for the first flow path 46 and, spaced apart therefrom, a second nozzle for the second flow path 48, wherein the first and second volumes of beverage do not contact one another until they have been received in the large container, e.g., the box 16.
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The detection sensors 94 can be characterized as a safety feature, and guide brackets can be used in connection with such feature to assist a user in positioning container 16, 18 in the correct location of either of the container receiving areas 24, 26. The detection sensors 94, which can comprise proximity sensors, cooperate with the guide brackets to assure that the box container 16, for example, is positioned properly to accept the dispensed drink and not spill outside the container.
The beverage dispenser 12 can be provided with a plurality of out-of-product sensors 92 for continuously polling the hoppers 52a-c to determine the presence or absence of beverage constituent. If a user actuates one of the dispense buttons 32, 34, the electronic control would nevertheless prevent dispensing of the corresponding supply of beverage under certain circumstances. At the low volume dispense section 30, if the user actuates the low volume dispense button 34, the electronic control would prevent dispensing of the third supply of beverage, if the out-of-product sensor corresponding to the hopper 52c sends an out-of-product signal. At the high volume dispense section 28, if the user actuates the high volume dispense button 32, the electronic control would prevent dispensing of both the first and second supplies of beverage, if the out-of-product sensor corresponding to any one of the hoppers 52a and 52b sends an out-of-product signal. In this regard, even though one of hoppers 52a and 52b may not have “run-out” of beverage constituent, a combination of the first and second supplies would be diluted if permitted to continue, and thus dispensing of a diluted beverage is prevented. The out-of-product sensors 92 can comprise proximity sensors. In the high volume dispense section 28, for example, the sensors 92 monitor the level of powder inside each of the two powder hoppers, to make sure “either” hopper does not run out of powder during the dispensing of the drink. This way the correct strength, e.g., drink ratio, will be produced consistently.
Thus, herein has been described an enhanced beverage dispenser, comprising a machine with capability of filling a large storage container (e.g., a ninety-six ounce cardboard box dispenser), while limiting the amount of product foaming to gain an optimal filling ratio. A fast-fill counter-top beverage dispenser is provided that will dispense a high volume of finished product into carry-out containers, for example, with small closable openings, without excessive foaming, while filling up to about ninety to ninety-five percent of the available volume, for example. In preferred embodiments, the same machine that provides fast-fill capability, can be used to supply smaller cup sized servings, e.g., eight to twelve ounces, for example, with normal foam head of about one-half inch high. In preferred embodiments, the high volume dispense section 28 assures that dispensing into the box 16 will not occur when the box is improperly positioned below the spout, e.g., nozzle 50. The dispensing unit, in preferred embodiments, will cease if powdered product runs low enough, in at least one of the first and second flow paths, to produce a drink not of a specified powder to water ratio.
In preferred embodiments of the invention, a first dispensing flow rate of the high volume dispense section 28 can be about three ounces per second, for example, and the second dispensing flow rate of the low volume dispense section 30 can preferably be about one and three-tenths (1.3) of an ounce per second. In preferred embodiments, the hoppers 52a, 52b of the high volume dispense section 28 are provided with about twenty-three pounds of product, e.g., powder or other beverage constituent, and the hopper 52c of the low volume dispense section 30 are provided with about seven pounds of product.
In preferred embodiments of the invention, the beverage dispenser system 10 presents a dispensed beverage, e.g., hot chocolate, by thoroughly mixing liquid, with minimized powder residue within the liquid, and a visible head on the surface of the beverage of approximately one-quarter inch to approximately one-half inch.
Regarding the low volume dispense section 30, for example, this effect is preferably achieved on the cup size section of the machine, for example, by mixing hot water and powder into an open mixing bowl located above the dispense nozzle. The beverage dispenser machine may also have a product guide in between the hoppers and the mixing bowl. A secondary whipping of the hot water/powder mix occurs in the whipping chamber, just below the mixing bowl, and the final beverage product dispenses out of the cup dispense nozzle into the waiting cup. Pre-calculated water flow rates, powder dispensing rates, whipping disc (or blade) design and speed, all assures a desirable beverage.
Regarding the high volume dispense section 28, production of a larger filled portable beverage container of a beverage, e.g., hot chocolate, presents different water and powder feed rates as well as a different mixing system. Larger volumes of mixed product tend to foam-up and overflow an enclosed container before a percentage of its total volume has been filled with liquid, and it is preferably to achieve up to ninety percent of the available volume of the container, e.g. box 18, being filled without foam overflowing the container spout. Inhibiting over-foaming can be accomplished, at least in part, by including whipping disc(s) in the secondary chamber, e.g., the whipping chamber 72a, for a mixing action that is gentler than that typically provided by a whipping blade. However, a mixing disc is not required, and any suitable whipping means, including a whipping blade, for example, can be included.
Inhibiting over-foaming can also be accomplished, at least in part, by providing the parallel flow paths. To fill large containers in relatively short periods of time, the fill rate, e.g., flow rate, might be doubled, for example, by using two hopper/mix chamber sections that feed into a two-to-one dispensing tube. Each of the large hoppers preferably contains about ten pounds of powder (e.g., about twenty three pounds for the two together) and the smaller hopper contains five pounds of powder (e.g., about seven pounds).
On the high volume dispense section 28, there are two separate hoppers used, and, if either one runs out of product, then dispensing is interrupted, because otherwise the dispensed drink would be diluted and the customer would not realize this until the user sampled the drink some time after leaving the store. To prevent this from happening an “out of product” sensor is used on each hopper that will stop the dispense operation if the powder level in either hopper drops below a certain point.
The design preferably also includes protection against the unit dispensing without the container being in place. A proximity sensor, along with a guide bracket, is used to assure the portable container is positioned properly to accept the dispensed drink, and not spill outside the container.
The design also preferably contains buttons to control the machine, these may include a high volume dispense button for activating dispensing the beverage from the high volume dispense section, a cup dispense button for activating dispensing the beverage from the cup size section and a stop button to either stop the machine entirely or the dispensing of a specific beverage.
The above aspects of the present invention have been given by way of illustrative example. While various embodiments of the invention have been described herein, it should be apparent, however, that various modifications, alterations and adaptations to those embodiments may occur to persons skilled in the art with the attainment of some or all of the advantages of the present invention. The disclosed embodiments are therefore intended to include all such modifications, alterations and adaptations without departing from the scope and spirit of the present invention as set forth in the appended claims.
The present application claims the benefit of priority to U.S. Provisional Patent Application No. 61/113,332, filed Nov. 11, 2008.
Number | Date | Country | |
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61113332 | Nov 2008 | US |