The present invention relates to beverage dispensers and multiflavor dispensing nozzles used thereon.
Beverage dispensers commonly mix a flavored concentrate with water to produce and dispense a beverage into a cup or other container for immediate consumption. Such dispensers are common in foodservice environments, such as fast-food restaurants and cafeterias. The water may be carbonated or non-carbonated, and many beverage dispensers are designed to be able to dispense both carbonated and non-carbonated beverages. Some beverage dispensers also dispense ice.
Consumers appreciate having a wide selection of beverages to choose from. Thus most beverage dispensers are designed to mix different flavored concentrates, or syrups, with the water to produce different flavors of beverages. Most dispensers have nozzles where the syrup and water mix to form the beverage, and each nozzle is connected to one syrup supply, and thus dispenses only one flavor of beverage, until the syrup supplied to that nozzle is switched. Such a beverage dispenser thus needs to have as many different nozzles as the desired number of beverages to be dispensed.
Countertop space for beverage dispensers is often at a premium in the foodservice environment. Accommodating a large number of mixing nozzles on a dispenser increases the size, and hence the “footprint” of the dispenser. There have thus been designs for multiflavor nozzles for beverage dispensers, where each nozzle is attached to several syrup supply sources. Valves control which syrup is delivered to the nozzle, but one nozzle is thus able to dispense several different flavors of beverages from a single dispensing point, thereby increasing the number of flavors of beverages that can be dispensed from dispenser while maintaining a small footprint on the countertop.
One common problem with a multiflavor nozzle is the carry-over mixing of flavors from one drink to the next. If any syrup or mixture of syrup and water remains in the nozzle or on a surface of it when the first beverage is finished being dispensed, then that syrup or mixed syrup and water will likely be combined with the next beverage to be dispensed. In multiflavor nozzles, this can produce a carry-over when the next beverage is of a different flavor than the beverage dispensed before it. This is particularly noticeable where a dark colored beverage is dispensed and then a clear or light colored beverage is dispensed from the same nozzle.
Another problem that can occur with any mixing nozzle is incomplete mixing of the syrup and water. If the mixing is not complete, the drink in the cup may be “stratified”, with different ratios of syrup and water at different levels in the cup. The lack of complete mixing is a greater potential problem in a multiflavor nozzle because the design of the nozzle must accommodate several different syrup supply points within the nozzle.
Another consideration for a dispensing nozzle is the aesthetic appearance of the beverage as it is being dispensed. Many beverage dispenses are set up for self service use, meaning that the consumer actuates the valves to select the desired flavor and positions the cup to receive the beverage. The consumer thus sees the beverage as it is being dispensed from the nozzle into the cup. It would be beneficial if the dispensing nozzle produced a beverage flow where the mixing of the syrup and the water presented a pleasing appearance to the consumer. Again, this effort is complicated in a multiflavor nozzle, where the syrup is introduced from different supply points in the nozzle.
While multiflavor nozzles are known, there is still a long felt need for a nozzle that avoids carry-over, produces a well-mixed drink, and presents a pleasing appearance as the beverage is being dispensed. On top of these requirements, it would be beneficial if the nozzle were easy to dissemble for cleaning, and low in cost to manufacture.
Thus, a multiflavor dispenser that could meet these different requirements would be a great improvement.
An improved multiflavor beverage dispenser has been invented. In one embodiment, four different flavors of beverages can be dispensed from the same nozzle. With the preferred embodiment of the invention, the syrup and water are combined in an aesthetically pleasing manner, and cross-flavor contamination between dispensing of different beverages is prevented.
In a first aspect, the invention is a multiflavor beverage dispensing nozzle comprising at least one water inlet; at least two syrup inlets; a water flow path through the nozzle that causes the water to discharge from the nozzle in a sheet form; and at least two syrup flow paths through the nozzle, one in fluid communication with each syrup inlet, each terminating in a syrup discharge port that includes a syrup deflector shaped to cause syrup flowing through the syrup flow path to fan out as it exits the discharge port so that it impinges on the sheet of water.
In a second aspect, the invention is a multiflavor beverage dispensing nozzle comprising at least one water inlet; at least two syrup inlets, a main water flow path through the nozzle; at least two syrup flow paths through the nozzle, one in fluid communication with each syrup inlet, each terminating in a syrup discharge port; and at least two secondary water flow paths that each divert water from the main flow path and discharge the diverted water through one of the at least two syrup discharge ports.
In another aspect, the invention is a beverage dispenser comprising a plurality of multiflavor mixing and dispensing nozzles, each multiflavor nozzle comprising at least one water inlet; at least two syrup inlets; a water flow path through the nozzle that causes the water to discharge from the nozzle in a sheet form; and at least two syrup flow paths through the nozzle, one in fluid communication with each syrup inlet, each terminating in a syrup discharge port that includes a syrup deflector shaped to cause syrup flowing through the syrup flow path to fan out as it exits the discharge port so that it impinges on the sheet of water.
In still another aspect, the invention is a beverage dispenser comprising a plurality of multiflavor mixing and dispensing nozzles, each multiflavor nozzle comprising at least one water inlet; at least two syrup inlets; a main water flow path through the nozzle; at least two syrup flow paths through the nozzle, one in fluid communication with each syrup inlet, each terminating in a syrup discharge poll; and at least two secondary water flow paths that each divert water from the main flow path and discharge the diverted water through one of the at least two syrup discharge ports.
With the preferred embodiment of the invention, one nozzle can be used to dispense up to four different flavors, which allows for a wide variety of beverages to be dispensed with a dispenser having a small footprint. At the same time, the nozzle dispenses a beverage with a pleasing presentation, which is well mixed as it falls into the cup, and the syrup does not stay in the end of the syrup passageway where it would otherwise likely be dislodged when the next drink is dispensed, causing flavor carry-over.
These and other advantages of the invention, as well as the invention itself, will best be understood in view of the drawings, a brief description of which is as follows.
The present invention will now be further described. In the following passages, different aspects of the invention are defined in more detail. Each aspect so defined may be combined with any other aspect or aspects unless clearly indicated to the contrary. In particular, any feature indicated as being preferred or advantageous may be combined with any other feature or features indicated as being preferred or advantageous.
The term “sheet” used in the specification and claims has a meaning defined as follows. The term “sheet” designates a form of water flow that has a small thickness dimension and a substantially longer other dimension. The sheet need not be, and is typically not, flat. Rather, the sheet form of water flow will typically be hollow cylinder, with a conical component as the sheet form collapses into a solid stream.
The preferred ice and beverage dispenser 10 is equipped with an ice crusher assembly 40, best seen in
The dispenser 10 uses standard pumps, valves and ceramic flow controls (not shown) to supply syrups from plural sources of supply, such as bag-in-box syrups, to the multiflavor beverage dispensing nozzles 50. The dispenser 10 includes circuit board 46 for controlling various machine functions. Four empty valve mounting blocks X are shown in
In the dispenser 10, each nozzle is hard plumbed to only one source of water, and each beverage dispensed for that nozzle will thus either need to be carbonated or non-carbonated. Alternatively, a carbonated and non-carbonated water line could be connected to each water inlet, or the nozzles could be equipped with two water inlets so that both carbonated and non-carbonated beverages could be dispensed from the same nozzle. Also, instead of being hard plumbed, the dispenser 10 may be equipped with a selection manifold connected between sources of both carbonated and non-carbonated water. The manifold has a selecting mechanism allowing a user of the apparatus to easily switch between directing carbonated and non-carbonated water through the water line to the valve supplying water to a given nozzle. Exemplary selection manifolds are disclosed in U.S. Pat. No. 6,698,621, which is also incorporated herein by reference.
A first embodiment of a multiflavor beverage dispensing nozzle 50 is shown in
The water flow path through the nozzle 50 is best seen in
There is an annular region in the water flow path downstream of the radial flow path. This next part of the water flow path includes a space defined between two conical wall surfaces of the syrup base 90 and the bottom nozzle member 100. The outer surface of wall 92 of syrup base 90 and an inner surface of wall 103 of bottom nozzle member 100 force the water to flow downwardly in a converging annular space. The water discharges through an annular opening at the end of its flow path. The flow path between the conical walls causes the water to form into a sheet as it discharges. The sheet is in the general form of a hollow cylinder, but the velocity of the water and the angle of the conical surfaces on walls 92 and 103 causes the water sheet to converge as it falls from the nozzle. In addition, the natural surface tension of the water further contributes to the water sheet collapsing further as it falls below the bottom of the nozzle 50. Wails 104 and 106 provide a decorative aspect to the nozzle 50, and obscure visual observation of the beverage flow to a point below the bottom of the nozzle 50 where the syrup and water are well mixed.
The multiflavor beverage dispensing nozzles 50 are designed to accommodate four different syrup flavors, but could be configured to dispense two, three, five or more different flavors of beverage as well. Each nozzle 50 includes four syrup inlets 66, four syrup flow paths and four syrup discharge ports. The syrup flow paths for two of these are shown in
The syrup chamber 89 is just upstream of the syrup discharge port 112 (
Preferably the syrup deflector is shaped to cause the flow of syrup through the port to fan out to impinge on at least half of the annular surface of the water sheet. Thus the syrup discharge ports each discharge syrup into the converging water flow path. Also, the syrup deflectors are preferably positioned and shaped to cause the syrup to fan out toward either the front or back of the nozzle (the front and back being relative terms, but designating positions compared to the dispenser on which the nozzles are installed). While all of the deflectors can direct the syrup towards the front (as shown in the present drawings), it has been found that the deflectors on one side should direct the fan of syrup across to the opposite side of the water flow. In this way, if the syrup flow rate varies, and is sometimes relatively high (due to the type of syrup pump being used), the syrup flow rate will be spread out further and not cause the syrup to disrupt the water flow.
Thus two deflectors in two of the different discharge ports will preferably deflect flow to the same first side of the nozzle, and the other two will deflect flow to the same second side (opposite to the first side) of the nozzle. This will preferably be towards the front and back of the dispenser when the modules 20 are in place and the bottom nozzle member 100 is in its correct position such that the bayonet connectors 102 are locked into place though slots 65. Thus, when a consumer stands in front of the dispenser 10 and activates a push button on module 20, the selected syrup flow will pass through the nozzle 50 and be discharged towards the inside surface of the water on the side of the flow closest to the consumer for two of the flavors, and the side of the flow farthest from the consumer for the other two flavors, both of these arrangements presenting an aesthetically pleasing flow and mixing of the syrup and water.
To help prevent flavor carry-over from one drink to the next, the nozzle 50 also includes a secondary water flow path for each syrup flow path. The secondary water path discharges a small amount of water into each syrup chamber 89 whenever water is flowing in the main water flow path. This secondary water serves two purposes. First, because it is under pressure, the velocity of the water in this secondary path helps to force syrup out of the syrup chamber. Second, the water is introduced into and mixes with the syrup in the chamber 89, this reducing its viscosity. As a result, the syrup in the chamber will all drain from the chamber 89 when the flow of syrup is stopped. The syrup in tube 88 will have a high enough viscosity and surface tension that it will form a meniscus and stay up inside of tube 88.
The secondary water flow paths each comprise a hole 86 through the water distributor 80 (
The multiflavor beverage dispensing nozzles disclosed herein provide many advantages. Not only do they allow multiple beverages to be dispensed from the same nozzle, but they avoid the problem of flavor carry-over between different beverages. Also, they provide a well mixed drink, and they present an aesthetically pleasing beverage pour presentation. Further, the preferred embodiment is made from injection molded parts that are low cost to manufacture and easy to assemble, yet the decorative bottom nozzle member can easily be removed for cleaning.
It should be appreciated that the apparatus of the present invention is capable of being incorporated in the form of a variety of embodiments, only a few of which have been illustrated and described above. For example, instead of all six of the modules 20 including a multiflavor beverage dispensing nozzle, one or more of the modules could be equipped with a standard nozzle that dispenses just one flavor of beverage, or the dispenser could include one or more nozzles from which an additional flavor may be dispensed into a cup to provide an extra shot of flavor to a particular beverage. The invention may be embodied in other forms without departing from its spirit or essential characteristics. The described embodiments are to be considered in all respects only as illustrative and not restrictive, and the scope of the invention is therefore indicated by the appended claims rather than by the foregoing description. All changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
The present application claims the benefit of the filing date under 35 U.S.C. § 119(e) of Provisional U.S. patent Application Ser. No. 60/985,914; which is hereby incorporated by reference in its entirety.
Number | Date | Country | |
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60985914 | Nov 2007 | US |