The present relates to beverage dispensing systems, and in particular to cleaning and sanitizing beverage dispensing systems.
Beverage product dispensing systems, such as beverage or drink dispensers, usually have supply containers of liquid beverage components that are fluid coupled through fluid flow paths to dispense valves located at stations where the beverage components are to be dispensed as drinks for service to customers. The beverage components may comprise beverage concentrates or syrups and one or more diluents, such as plain and/or carbonated water, for mixture with the concentrates or syrups to provide a desired beverage. The beverage components are normally chilled, so that drinks drawn for customers are sufficiently cold and not degraded in quality by excessive melting of ice. Chilling of the beverage components can be accomplished in any suitable manner, such as by refrigerating an interior of a cabinet in which supplies of beverage components are stored or by flowing the beverage components through a cold plate before they are delivered to a dispense point. The supplies of beverage components can be located near or relatively far from the dispenser. They can be located in a lower part of the dispenser, in which case pumps can be used to deliver beverage components from the supplies and through flow paths to dispense points, such as to individual ones of a plurality of beverage dispensing valves. One such beverage dispenser having dispense valves for being fluid coupled to supplies of liquid beverage components is taught by U.S. Pat. No. 6,935,532, the teachings of which are incorporated herein by reference. Other types of drink dispensers include smoothie machines.
Upon replacing a depleted supply container of a beverage component, cleaning and sanitizing of the flow path between the container and point of dispense is normally required, particularly if one type of beverage component is being replaced with another type. Cleaning and sanitizing the flow paths may also be required if the beverage dispenser is to be moved from one location to another, and in any event it is required to be performed on a regular basis, usually weekly, for health and sanitation reasons. With conventional beverage dispensing systems, the cleaning and sanitizing operation is normally a tedious and time consuming process.
A primary object of the present invention is to provide a system for and method of quickly and conveniently cleaning and sanitizing fluid flow paths of a beverage dispenser.
In accordance with the present invention, a beverage dispensing system comprises a plurality of beverage component supply containers each having a valve; a plurality of beverage dispense valves; a manifold having a plurality of outlet ports each in proximity to the valve of an associated one of the supply containers, said manifold also having an inlet port for fluid coupling to a source of cleaning fluid; and a plurality of fluid flow paths each having one end movable between and for being releasably fluid coupled to either the valve of an associated one of the supply containers or to the manifold outlet port associated with that supply container, and an opposite end fluid coupled to an associated one of the dispense valves, so that when the one end of a flow path is fluid coupled to its associated supply container valve, beverage component is delivered through the flow path to its associated dispense valve, and when the one end is disconnected from its associated supply container valve and fluid coupled to its associated manifold outlet port, cleaning fluid is delivered through the flow path to its associated dispense valve to clean the flow path and dispense valve.
In a preferred embodiment of the beverage dispensing system, the one end of each flow path has a tubular member, each manifold outlet port has a valve, and the manifold outlet port valves and supply container valves each have a passage therethrough in which is a deformable wall having an X-shaped slit that normally closes the passage to a flow of fluid therethrough and through which passage and X-shaped slit the tubular member of an associated one of the flow paths can move to open the passage for a flow of fluid therethrough and through the flow path. The one end of each flow path can comprise an elbow connector having the tubular member; the manifold can comprise a plurality of manifolds each having a plurality of outlet ports and an inlet port, with the manifolds being positioned such that each outlet port is adjacent to an associated individual one of the supply container valves; and the manifold can be a plurality of manifolds each having a pair of outlet ports and an inlet port and each being positioned between an associated adjacent pair of the supply container valves with its manifold outlet ports each being toward an associated one of the pair of valves. The beverage dispenser can be a frozen product dispenser having at least one beverage blending station, in which case the beverage dispenser advantageously includes a further flow path having one end fluid coupled to the source of cleaning fluid and an opposite end fluid coupled to at the least one blending station for delivery of cleaning fluid through the further flow path to the at least one blending station to clean the blending station. A plurality of pumps, each fluid coupled to an associated one of the flow paths, can deliver beverage components and cleaning fluid through the flow paths to the dispense valves.
The invention also contemplates a method of operating a beverage dispenser, which comprises the steps of providing a plurality of beverage component supply containers each having a valve; positioning a manifold having a plurality of outlet ports such that each outlet port is in proximity to the valve of an associated one of the supply containers, the manifold also having an inlet port for fluid coupling to a source of cleaning fluid; extending a plurality of fluid flow paths between the supply containers and the dispense valves, each flow path having one end movable between the valve of an associated one of the supply containers and the manifold outlet port associated with that supply container and an opposite end fluid coupled to an associated one of the dispense valves; moving the one end of a flow path into fluid coupled relationship with the valve of its associated supply container to deliver beverage component from the supply container and through the flow path to its associated dispense valve; and thereafter moving the one end of a flow path into fluid coupled relationship with its associated manifold outlet port to deliver cleaning fluid through the flow path to its associated dispense valve to clean the flow path and dispense valve.
According to a preferred practice of the method, the step of moving the one end of a flow path into fluid coupled relationship with its associated manifold outlet port comprises first removing the one end of such flow path from fluid coupled relationship with its associated supply container valve and then moving the one end into fluid coupled relationship with its associated manifold outlet port. Alternatively, the step of moving the one end of a flow path into fluid coupled relationship with the valve of its associated supply container comprises first removing the one end of such flow path from fluid coupled relationship with its associated manifold outlet port and then moving the one end of the flow path into fluid coupled relationship with the valve of its associated supply container. It is contemplated that the one end of each flow path have a tubular member, each manifold outlet port have a valve, and the manifold outlet port valves and supply container valves each have a passage therethrough in which is a deformable wall having an X-shaped slit that normally closes the passage to a flow of fluid therethrough, with the moving step then comprising moving the tubular member through the passage and X-shaped slit of either a supply container valve or a manifold outlet port valve. The one end of each flow path can comprise an elbow connector having the tubular member, and each supply container valve and manifold outlet port valve can be an LMS valve. The manifold can be a plurality of manifolds each having a pair of outlet ports and an inlet port, and the positioning step positions each manifold between an associated adjacent pair of supply container valves with each manifold outlet port being toward an associated one of the supply container valves of the associated pair, and the step can be included of merging the manifold inlet ports together into a single inlet for connection to the source of cleaning liquid. Should the beverage dispenser be a frozen beverage dispenser having a blending station, then the method also provides the steps of extending a further fluid flow path between the source of cleaning fluid and the blending station; and delivering cleaning fluid through the further flow path to the blending station to clean the blending station.
The foregoing and other objects, advantages and features of the invention will become apparent upon a consideration of the following detailed description when taken in conjunction with the accompanying drawings.
With reference also to
The beverage components in the bags 28 can be beverage concentrates and/or syrups, in which case diluent that can be plain and/or carbonated water is normally provided for mixing with the concentrates and/or syrups to prepare beverages for service to customers. Dispense valves 36 are in the upper cabinet 24 above a drink dispense station 38. With reference also to
The supply bags 28 of beverage components each have an outlet valve that can be an LMS (Liquid Molding System) valve 44, which is understood by those of skill to be a valve having a passage extending therethrough and in which passage there is a silicon member having an X-shaped or “+” shaped cut that normally closes the passage, but into which passage and through which “+” shaped cut a fluid connector can be moved to establish fluid communication with the beverage component in the bag interior. For the arrangement shown, fluid connectors for coupling with the valves 44 are elbow connectors 46, each of which connector has a tubular outlet fluid coupled to one end of an associated tubing 40, an opposite end of which tubing is fluid coupled to an associated pump 42. Each elbow connector also has a tubular inlet for coupling with an associated valve 44 by means of manually moving the tubular inlet into the valve passage and through the “+” shaped cut in the silicon member in the passage into fluid coupled relationship with the liquid contents in the interior of the associated bag 28. The elbow connector tubular inlet may also be manually removed from the valve passage “+” shaped cut therein to disconnect the elbow connector from the bag interior. Thus, with the elbow connector in fluid communication with the interior of its associated bag, operation of its associated pump 42 draws beverage component from the bag and through the elbow connector and tubing for delivery to the dispense valves 36 in the upper cabinet 24. As is apparent, the fluid coupling arrangement with the beverage components in the bags 28 accommodates convenient replacement of a depleted bag, since the elbow connector for a depleted bag can simply be manually withdrawn from the valve 44 of the bag, whereupon the depleted bag can be lifted out of its bin 26 and replaced with a fresh bag that is then fluid coupled to the elbow connector via its own valve 44.
The liquid beverage components and diluents are delivered through flow paths that extend between the bags 28 of beverage components in the lower cabinet 22 and the beverage dispense valves 36 in the upper cabinet 24. To ensure that quality beverages are dispensed for service to customers, means are provided for chilling the beverage components and any diluents delivered to the dispense valves. One such means can comprise a refrigeration system 48 mounted on the upper cabinet 24 for chilling the interior of the lower cabinet 22 in which the bags of beverage components are stored. For the case where the beverage dispenser 20 is a smoothie machine 20 that also dispenses ice from an ice dispenser 50 located in the upper cabinet 24 above the dispense station 38, the refrigeration system can service an icemaker (not shown) that manufactures ice for introduction into an ice storage hopper 52 for delivery from the hopper to the ice dispenser, or a separate refrigeration system can be provided for the icemaker. The chilling means can also include a cold plate that is contacted by ice and through fluid circuits of which beverage components and diluents are flowed prior to being delivered to the dispense valves 36. Means (not shown) may also be provided to chill the flow paths themselves between the lower cabinet 22 and the dispense valves 36 in the upper cabinet 24. The ice dispenser or chute 50 may be of a type as disclosed in either U.S. Pat. No. 6,964,351, issued Nov. 15, 2005, or in U.S. Pat. No. 4,921,149, issued May 1, 1990, the teachings of which patents are specifically incorporated herein by reference. The refrigeration system may be of a type as disclosed in pending U.S. patent application Ser. No. 11/974,061, filed Oct. 11, 2007 and published on Jun. 26, 2008 as Publication No. US 2008/0149655, the teachings of which are specifically incorporated herein by reference.
The smoothie machine 20 includes at least one and preferably two drink blending stations 54 and 56, at each of which mixers or blenders are provided for blending beverage ingredients into smoothie drinks for service to customers. In the preparation of a beverage, a container is placed at the dispense station 38 and beneath the dispense valves 36 and ice dispenser 50, whereupon the dispenser is operated to dispense predetermined quantities of beverage components and ice into the container. The container is then moved to one of the blending stations 54 and 56 where a blending mechanism, such as a blender or rotary mixer, is brought into contact with the beverage ingredients in the container and operated for a time necessary to blend the ingredients into a smoothie for service to a customer.
As is understood by those skilled in the art, in the preparation of drinks it is desirable to prevent cross-contamination of different beverage components such as base beverages, syrups, concentrates and/or additive flavors, etc. It also is necessary, indeed required, that all flow paths through a beverage dispenser that are contacted by beverage ingredients be cleaned and sanitized periodically, usually at no more than weekly intervals. This entails thoroughly cleaning all of the tubing, pumps, valves, solenoids, etc., contacted by the beverage components and through which beverage components are flowed, as well as any other parts of the beverage dispenser that the beverage components contact in the preparation of drinks for service to customers. Also, in the case of changing a type of beverage component to be delivered through a particular flow path, to avoid cross contamination the flow path must be first cleaned. Conventional techniques for cleaning and sanitizing a beverage dispenser can be labor intensive and time consuming.
To facilitate cleaning and sanitizing of the beverage component flow paths of the beverage dispensing machine 20, the invention provides a novel apparatus for and method of quickly and conveniently flowing cleaning and sanitizing liquid through a selected one or more or all of the flow paths, which includes the tubes, valves, pumps and any other components that are contacted by the beverage components as they are delivered from the supply bags 28 in the lower cabinet 22 to the dispense valves 36 in the upper cabinet 24. The invention also provides for cleaning and sanitizing the blenders used to blend the beverage components into a smoothie drink at the blending stations 54 and 56.
When there is a need to clean and sanitize the beverage dispenser, one or more and perhaps all of the flow paths carrying beverage product and that are fluid coupled via their elbow connectors 46 to beverage component supply bags 28 are disconnected from the valves 44 of the bags. The elbow connectors of such flow paths are then fluid coupled to associated outlet ports of a manifold that may have a plurality of outlet ports and that also has an inlet port connected to a source of cleaning and sanitizing fluid. A plurality of such manifolds can be used, in which case the inlet ports to the manifolds may be merged into a single inlet that is coupled to the source of cleaning and sanitizing fluid. The various pumps 42 associated with the flow paths to be cleaned and sanitized are then operated either individually or simultaneously to flow the cleaning and sanitizing fluid from the manifold outlets into and through the flow paths to and out of the dispense valves 36, thereby to clean and sanitize the entirety of the flow paths. A separate pump may be used to flow the cleaning and sanitizing fluid through the blenders to clean and sanitize the same.
With reference also to
To quickly and conveniently clean and sanitize the flow paths between one or more or all of the elbow connectors 46 and the dispense station 38, for each flow path to be cleaned and sanitized, its associated elbow connector is pulled out of and disconnected from the valve 44 of its associated beverage component supply bag 28 and is then inserted into and fluid coupled with the valve in its associated outlet port 60 of its associated manifold 58. The pumps 42 associated with the elbow connectors 46 that are fluid coupled with the manifold outlet ports 60 are then operated to deliver cleaning and sanitizing fluid from the source thereof and through the manifolds, elbow connectors and associated flow paths to and through the dispense valves 36 at the dispense station to clean and sanitize the flow paths. After cleaning and sanitizing is complete, the elbow connectors 46 are pulled out of and disconnected from the manifold outlet port valves and reconnected to the valves 44 of their associated beverage component supply bags 28, which bags may be either the same as or different from the bags with which the elbow connectors were previously fluid coupled.
The fluid circuits of the beverage dispensing machine 20 are schematically shown in
Ice is an ingredient of a smoothie beverage and means are provided to control the ice dispenser 50 to deliver a desired quantity of ice into a container at the dispense station 38. The ice dispenser 50 includes an ice chute gate (not shown), and to control opening and closing of the gate, CO2 is delivered through a pressure regulator 82 and a solenoid valve 84 to a pneumatic cylinder 86. A piston (not shown) is movable in the cylinder and is coupled to the ice chute gate to either open the gate for dispensing of ice from the hopper 52 and through the chute to the dispense station 38 or to close the gate to terminate ice dispense. The direction of movement of the piston in the cylinder, and therefore whether the ice chute is opened or closed, depends upon whether the solenoid valve 84 is controlled to deliver CO2 through a line 88 into one end of the cylinder 86 on one side of the piston or through a line 90 into an opposite end of the cylinder on the other side of the piston. In operation, the solenoid 84 advantageously is operated to open the ice chute gate for a time selected to deliver a predetermined quantity of ice into a container at the dispense station 38 below the ice dispenser. After the beverage component, water and ice are delivered in predetermined quantities into the container at the dispense station, the container is moved to one of the blending stations 54 and 56 where a motor driven blender is moved through the ingredients in the container to blend the same into a smoothie beverage for service to a customer.
After blending of the beverage components into a smoothie is complete, the blender must be cleaned before it is again used. Cleaning of the blender is accomplished by flowing water through either a 3-way valve 92, a solenoid valve 94 and an orifice 96 to a blender 98 at the blending station 54, or through a 3-way valve 100, a solenoid valve 102 and an orifice 104 to a blender 106 at the blending station 56, depending upon which blender was used and requires cleaning. As seen in
When a liquid beverage component is changed from one type to another, such as from one flavor to another, or when it otherwise becomes necessary to clean and sanitize the beverage component flow paths through the beverage dispensing machine 20, one or more or all of the elbow connectors 46 are removed from their fluid connections with the valves 44 of the beverage component supply bags 28 and are fluid coupled to the valves for their associated manifold outlet ports 60, as represented by the dashed fluid flow line 112. The cleaning and sanitizing fluid from the source thereof is then delivered through a line 110 to the inlet ports 62 to the manifolds 58. The solenoid valves 68 and 70 are then opened so that the pumps 42 operate to deliver cleaning and sanitizing fluid from the source thereof through the manifolds 58, the elbow connectors 46 and the beverage component flow paths that extend from the elbow connectors to and through the dispense valves 36 to clean and sanitize the same. During such cleaning and sanitizing operation, the dispense valves 36 are maintained opened to accommodate a flow of cleaning and sanitizing fluid therethrough and into a collection container placed at the station 38. The cleaning and sanitizing fluid can be flowed through all of the beverage component flow paths simultaneously of through just selected individual ones of the flow paths. When cleaning and sanitizing is complete, the solenoid valves 68 and 70 are closed and the elbow connectors 46 are removed from the outlet port valves of the manifolds 58 for reconnection to the valves 44 of their associated beverage component supply bags 28.
To sanitize the blenders 98 and 106, the cleaning and sanitizing solution supply lie 110 connects to an inlet port 114 to a manifold 116, an outlet port 118 from which is fluid coupled to an inlet to a CO2 powered pump 120. To deliver cleaning and sanitizing solution to a selected one of the blenders 98 and 106, its associated 3-way valve 92 or 100 is operated to deliver the solution to the blender. After cleaning and sanitizing the blender, as shown in
The invention provides an improved apparatus for and method of quickly, efficiently and conveniently cleaning and sanitizing all beverage component flow paths, and all parts of a beverage dispensing machine, that are contacted by beverage components in the preparation of drinks for service to customers. Simply by manually uncoupling a connector from its fluid connection to a supply of beverage component and re-coupling the connector to a source of cleaning and sanitizing fluid, a fluid flow path served by the connector can flushed clean of beverage component and sanitized.
While embodiments of the invention have been described in detail, various modifications and other embodiments thereof may be devised by one skilled in the art without departing from the spirit and scope of the invention, as defined in the appended claims.
This application claims benefit of provisional application Ser. No. 61/277,719, filed Sep. 29, 2009.
Number | Date | Country | |
---|---|---|---|
61277719 | Sep 2009 | US |