Outlet nozzle arrangement for a beverage dispensing device - Patents.com

Abstract

The present disclosure provides a beverage dispensing apparatus comprising: a nozzle array having a plurality of nozzles, at least one of the plurality of nozzles being an outlet nozzle for dispensing a drinkable fluid and at least one of the plurality of nozzles being a cleaning return nozzle; and a cleaning chamber housing repeatedly movable between a stored position and a deployed position for cleaning the nozzle array, the cleaning chamber housing comprising an internal cavity in which the plurality of nozzles are sealably received when in the deployed position.

Description

[Technical field]

[0001] The present disclosure relates to an outlet nozzle of a beverage dispensing device that is configured to be cleaned by a cleaning fluid. [Background technology]

[0002] Beverage dispensing machines for preparing and dispensing beverages are well known in the art. Typically, these machines include one or more outlet nozzles through which the beverage is dispensed into a container. The outlet nozzles require regular cleaning to maintain the quality of the beverage.

[0003] WO 2018 / 208156 describes an apparatus for preparing beverages, comprising at least one beverage outlet nozzle for dispensing a beverage into a beverage packaging container, and a cleaning structure for cleaning the external surface of the beverage outlet nozzle. The cleaning structure is movable from a rest position to a cleaning position by using a cam wheel and a pair of support members arranged to pivot the cleaning structure forward. In use, the cleaning structure provides a sealed cavity for each nozzle to allow cleaning of the exterior of each nozzle, and a common drain through which used cleaning fluid can drain under gravity.

[0004] Swiss Patent No. 707837 discloses a beverage machine with a lower outlet for dispensing the beverage prepared in the beverage machine into a lower receptacle. A tub is arranged in the area of ​​the outlet and moves between a first position in which the prepared beverage is dispensed and a second position in which the tub is below the outlet and can be filled with a fluid for cleaning. Once cleaning is completed, the tub is returned to the first position and the fluid is allowed to flow from the tub into a drain.

[0005] The present invention seeks to provide an improved outlet nozzle arrangement for beverage dispensing machines. Summary of the Invention

[0006] The present invention provides a beverage dispensing device according to the accompanying claims.

[0007] The present disclosure provides a beverage dispensing apparatus. The beverage dispensing apparatus may include a nozzle array comprising a plurality of nozzles, at least one of the plurality of nozzles being an outlet nozzle for dispensing a drinkable fluid, and at least one of the plurality of nozzles being a wash return nozzle. The beverage dispensing apparatus may include a wash chamber housing repeatedly movable between a stored position and a deployed wash position. The wash chamber housing may include an internal cavity in which the plurality of nozzles are received when in the deployed position. The internal cavity may be sealed.

[0008] The wash return nozzle may be configured to remove the wash fluid from the wash chamber housing. The wash return nozzle may extract the wash fluid by suction. The wash return nozzle may be in fluid communication with the pump.

[0009] The wash chamber housing may include a base and at least one sidewall. The sidewall may extend upwardly from the base. The base and the sidewall may define an interior cavity.

[0010] The plurality of nozzles may be configured to extend into the internal cavity when the wash chamber housing is in the deployed position. A wash return nozzle may be provided at a lowest point of the internal cavity relative to the at least one outlet nozzle. The wash return nozzle may be located within a sump area of ​​the wash chamber housing. The sump may be a bottom portion of the wash chamber housing where wash fluid may flow from the outlet nozzle. The wash return nozzle may be proximate to a wash chamber housing base.

[0011] The internal cavity may include a peripheral seal that seals against the nozzle array to collectively seal the nozzles within the internal cavity. The peripheral seal may be provided on a top edge of the wash chamber housing sidewall. The peripheral seal may surround the nozzles when the wash chamber housing is in the deployed position. The seal may include a sealing element such as an O-ring or a gasket. The sealing element may be biased against a corresponding sealing surface of the nozzle array.

[0012] The plurality of nozzles may extend from a proximal end attached to the body of the nozzle array to a distal end, the distance between the proximal and distal ends defining a length of each nozzle. The wash return nozzle may have the longest length of the plurality of nozzles.

[0013] The plurality of outlet nozzles may comprise at least one or more of the group including a coffee outlet nozzle, a milk outlet nozzle, a milk outlet nozzle, and a water outlet nozzle. In some embodiments, the water outlet nozzle may be configured to provide a wash return nozzle. The plurality of outlet nozzles, or each of the plurality of outlet nozzles, may be configured to provide a wash fluid during the washing process.

[0014] The wash chamber housing may include a well for each of the outlet nozzles. Each well may include well sidewalls defining a wash cavity that receives a terminal end of a respective outlet nozzle. The well sidewalls may be configured to redirect wash fluid ejected from a respective nozzle outlet along an exterior surface of the respective outlet nozzle.

[0015] Each well may comprise a well base. The well base is elevated relative to the base of the wash chamber housing. The well may comprise or be formed as part of a pedestal or upstanding portion extending from the base of the wash chamber housing. The pedestal may be a cylindrical post. The well may comprise a recess at the terminus of the pedestal.

[0016] Each well sidewall may include a well drain through which residual wash fluid may flow from the well into the wash chamber housing. The well drain includes an opening in the sidewall of each well. The opening may be a notch extending from a top edge of the sidewall to a base. The drain may face the wash return nozzle to direct the outflow of residual wash fluid toward the wash return nozzle.

[0017] The apparatus may further comprise a drive mechanism operable to move the washing chamber housing between the stowed position and the deployed position. The drive mechanism may be a reciprocating drive such that the washing chamber housing is repeatedly moveable between the stowed position and the deployed position, and vice versa.

[0018] The drive mechanism may include a shuttle track along which the washing chamber housing is driven to move between the stowed position and the deployed position. The shuttle track may be curved. The drive mechanism may further include a drive arm rotatable to slide the washing chamber housing along the shuttle track. The drive arm may be coupled to the washing chamber housing via a drive link.

[0019] The drive link may be pivotally connected at respective ends thereof to the drive arm and the wash chamber housing. The drive link may be configured to articulate relative to the drive arm and the wash chamber housing during actuation of the drive arm. The drive arm may be rotated by an electric motor. The electric motor may be connected to the drive arm via a worm drive. The worm drive may comprise a worm screw and a worm gear.

[0020] There may be a plurality of drive arms, one on each side of the wash chamber housing, each of the plurality of drive arms configured to drive the wash chamber housing along a respective shuttle track on each side of the wash chamber housing, and each of the drive arms may be rotated by a common actuator.

[0021] The shuttle track may receive a shuttle engagement member of the washing chamber housing, which may be configured to rotate within and slide along the shuttle track under the influence of the drive arm, such that when the washing chamber housing is urged along the shuttle track by the drive arm, the washing chamber housing rotates relative to the shuttle track as it traverses along the shuttle track.

[0022] The shuttle engagement member may be located on a sealing surface of the washing chamber housing. Providing a shuttle engagement member on a sealing surface of the washing chamber housing allows the washing chamber housing to be suspended below the nozzle array and allows a shuttle track to be provided above the nozzle array and hidden within the housing of the apparatus. The shuttle engagement member may be provided on the distal end of an arm that extends upwardly from the washing chamber housing or its upper surface.

[0023] The shuttle engagement member may be provided at a first end of the wash chamber housing and the drive arm may be drivingly connected to a second end of the wash chamber housing. The first end may be in front of the nozzle array when in the deployed position and behind the nozzle array when in the stowed position. The second end may be behind the nozzle array in both the stowed and deployed positions.

[0024] The wash chamber housing may be rotatably biased relative to the nozzle array. The actuable connection may be lifted by the actuating arm to pivot the wash chamber housing about the shuttle engagement member.

[0025] The apparatus may further comprise one or more beverage preparation modules. The beverage preparation modules may comprise a coffee module configured to prepare (e.g. brew) coffee and a mixing module configured to prepare a mixed fluid from a mixing fluid (e.g. milk, water, etc.) and dry edible powders (e.g. chocolate, soup, sweeteners, etc.). The wash chamber housing may form part of a cleaning circuit in which a cleaning fluid is circulated through the one or more beverage preparation modules and the wash chamber housing. The apparatus may further comprise a hot water module configured to heat a supply of water for circulation around the cleaning circuit.

[0026] The wash circuit may be a closed circuit and / or an open circuit terminating in an external drain, which may be connected to the wash chamber.

[0027] The cleaning circuit may comprise a plurality of beverage preparation modules. The cleaning circuit may be configured to connect the water heater module and the cleaning module in a closed circuit so that a cleaning fluid can be prepared. The cleaning circuit may be configured to comprise the cleaning module and one or more of the beverage preparation modules. The cleaning circuit may comprise a cleaning chamber. The cleaning chamber may be connected to each of the beverage preparation modules via at least one of the outlet nozzles. The cleaning chamber may be connected to the cleaning module via a cleaning return nozzle.

[0028] According to the present disclosure, there is provided a method of cleaning a beverage dispenser, which may be any of the beverage dispenser devices disclosed herein.

[0029] The method may include sealably engaging a nozzle array with a wash chamber housing to provide a wash chamber around the plurality of nozzles, and circulating a wash fluid through the wash chamber. Circulating the wash fluid through the wash chamber may include providing an inflow of the wash fluid from one or more of the plurality of nozzles, and extracting the wash fluid using a wash return nozzle. The wash return nozzle may be configured to aspirate the wash fluid from the wash chamber. The wash return nozzle may be fluidly connected to a pump. The pump may be provided by the wash module.

[0030] If the beverage dispensing machine comprises a beverage preparation module, the method may further comprise circulating the cleaning fluid through the beverage preparation module to an external drain or to the cleaning module. The method may further comprise performing one or more of the following: a residual flushing phase, in which hot or cold water is circulated through one or more of the beverage preparation modules via the cleaning chamber to an external drain, a sanitizing phase, in which the cleaning fluid is circulated through one or more of the beverage preparation modules and the cleaning module in a closed loop including the cleaning chamber before being connected to the external drain via the cleaning chamber, and a cleaning fluid flushing phase, in which water is flushed through one or more of the beverage preparation modules via the cleaning chamber to an external drain.

[0031] The method may further include clearing residual fluid from the wash chamber using an air or fluid flow.

[0032] The apparatus is capable of heating the cleaning fluid to a temperature of at least 50°C, preferably at least 60°C, preferably at least 70°C, most preferably about 75°C.

[0033] The apparatus may circulate the cleaning fluid through all of the subsystems at an elevated temperature for a selected period of time, for example, at least 2 minutes, preferably at least 3 minutes, preferably at least 4 minutes, and more preferably at least 5 minutes.

[0034] The wash fluid can then be drained from the dispenseable fluid circuit. Preferably, all subsystems can then be flushed to remove any residual wash fluid. The exit dock can then be opened to return the device to dispense mode.

[0035] The device may be used in an intermediate rinse mode in which the outlet dock may be closed to isolate the dispenseable fluid source so that the device may enter the intermediate rinse mode. Preferably, all subsystems may then be flushed to remove any dispenseable fluid residue from the dispenseable fluid circuit. After this, the outlet dock may then be opened to return the device to the dispense mode.

[0036] It will be understood by those skilled in the art that, except where mutually exclusive, a feature described in relation to any one of the aspects, embodiments or examples described herein may be applied mutatis mutandis to any other aspect, embodiment or example. Furthermore, except where mutually exclusive, any feature described herein may be applied to any aspect and / or combined with any other feature described herein. [Brief description of the drawings]

[0037] In order that the invention may be more clearly understood, one or more embodiments thereof will now be described, by way of example only, with reference to the accompanying drawings, in which: [Figure 1] 1 shows a nozzle array and wash chamber housing according to the present invention. [Diagram 2] 2 shows the underside of the nozzle array shown in FIG. 1 from which potable fluid is dispensed. [Figure 3a] 3A and 3B are side views of a drive mechanism that may be utilized to move the wash chamber housing between a stored position (FIG. 3a) and a deployed position (FIG. 3b). [Figure 3b] 3A and 3B are side views of a drive mechanism that may be utilized to move the wash chamber housing between a stored position (FIG. 3a) and a deployed position (FIG. 3b). [Figure 4a] 3a and 3b in various stages; [Figure 4b] 3a and 3b in various stages; [Figure 4c] 3a and 3b in various stages; [Figure 4d] 3a and 3b in various stages; [Figure 4e] 3a and 3b in various stages; [Figure 4f] 3a and 3b in various stages; [Figure 4g] 3a and 3b in various stages; [Figure 4h] 3a and 3b in various stages; [Diagram 5] 1 shows a schematic diagram of a beverage dispensing device incorporating a nozzle array and wash chamber housing of the present disclosure; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0038] Throughout the following description, references to fore, forwards and front may be made with reference to the front side of the beverage dispenser which faces the user and receives the beverage container. References to aft, rearward and rear may be interpreted as being behind the nozzle array with respect to a user of the beverage dispenser. References to axial direction may be with respect to an axis extending between the front and rear of the nozzle array. References to top and bottom / lower should be interpreted with respect to the orientation in use.

[0039] Figures 1 and 2 show a nozzle array 10 comprising a plurality of nozzles 12a-12e. At least one of the nozzles 12a may be a beverage output nozzle. At least one of the nozzles may be a wash return nozzle 12e. Also shown in Figure 1 is a wash chamber housing 14 which is repeatedly movable between a deployed wash position and a stored position.

[0040] Figure 1 shows the wash chamber housing 14 behind the nozzle array 10 in a stored position and for clarity the surrounding structure of the beverage dispenser and drive mechanism is not shown. The housing and drive mechanism are described in relation to Figures 3a and 3b and 4a to 4h. An example of a beverage dispenser which may incorporate the wash chamber housing 14 and nozzle array 10 is shown in Figure 5 and described further below.

[0041] The wash chamber housing 14 may include an internal cavity 16 in which the plurality of nozzles 12a-12e are sealably received when the wash chamber housing 14 is in the deployed position. Thus, the wash chamber housing 14 and the nozzle array 10 cooperatively form a wash chamber when the nozzles 12a-12e are sealably received within the internal cavity 16.

[0042] The wash chamber is such that it contains all of the multiple nozzles 12a-12e within the same sealed volume such that the nozzles 12a-12d are in fluid communication with the internal cavity 16 and with the at least one wash return nozzle 12e. Providing the outlet nozzles 12a-12e within the same wash chamber allows the wash fluid to collect in a common zone and be removed therefrom using the wash return nozzle 12e.

[0043] The wash return nozzle 12e may be used to pump the wash fluid out of the wash chamber. The use of a pump may allow for increased flow of the wash fluid along the internal and external surfaces of the outlet nozzles 12a-12d, allowing the wash of the outlet nozzles 12a-12d to form part of the wash fluid circuit.

[0044] The wash fluid may be pumped into the wash chamber via outlet nozzles 12a-12d collectively or individually and pumped out using a wash return nozzle 12e. The wash fluid circuit may comprise multiple components within the beverage dispensing device, allowing the wash fluid to circulate through multiple components before being dispensed to an external drain.

[0045] An additional advantage of providing a single wash chamber is that it allows for cleaning of the area around the perimeter of nozzle array 10 through which nozzles 12a-12e extend, which may become contaminated with dispensed fluid that has splashed back towards nozzles 12a-12e.

[0046] Providing a wash return nozzle provides a convenient and space efficient method of removing wash fluid from the wash fluid chamber, thus eliminating the need to provide an exhaust channel or exhaust pipe as part of the wash chamber housing.

[0047] 2 shows the underside of the nozzle array 10 revealing an outwardly facing exterior side of the nozzle array with multiple nozzles 12a-12e extending therefrom. The exterior side is arranged to overlie a container so that potable fluid can be dispensed into the container below. The exterior side may also provide a sealing surface 18 against which the wash chamber housing 14 is biased to define a wash chamber. The sealing surface 18 surrounds the multiple nozzles so that multiple nozzles can be contained within the same sealed chamber.

[0048] As can be seen in Figure 1, the back side of the nozzles 12-12e may include various connection features 13 to which fluid delivery pipes are connected in use. Thus, fluid dispensed from the nozzles 12a-12d enters the back side of the nozzle array 10 shown in Figure 1 and exits the nozzle array from the side shown in Figure 2.

[0049] The nozzle array 10 may comprise a nozzle array body 20 having a number of nozzles 12a-12e extending therefrom. As shown in Figures 1 and 2, there may be a number of outlet nozzles 12a-12d and a single rinse return nozzle 12e, although other configurations are possible and in some embodiments there may be a single outlet nozzle 12a and a single or multiple rinse return nozzles 12e. The nozzles 12a-12e shown in Figures 1 and 2 may include, for example, a water outlet nozzle 12d, a coffee outlet nozzle 12c, a chocolate outlet nozzle 12d, a milk nozzle 12a, and a rinse return nozzle 12e.

[0050] In other embodiments, the nozzles may include any consumable fluid and may comprise any one or more of a coffee outlet nozzle, a chocolate outlet nozzle, a soup outlet nozzle, a tea outlet nozzle, a soft drink outlet nozzle, or a water outlet nozzle, among others. The nozzles 12a-12e may extend out of the plane of the exterior surface of the nozzle array 10. The exterior surface may be planar. The nozzle array body 20 may comprise one or more mounting features 15 for mounting the nozzle array to a beverage dispensing device.

[0051] The wash return nozzle 12e may be configured to extend into the internal cavity 16 of the wash chamber housing 14 such that wash fluid introduced into the internal cavity 16 can be pulled up and removed by the wash return nozzle 12e. As such, the wash return nozzle 12e may extend into the internal cavity 16 and terminate at a lowest point of the internal cavity 16 or may be adjacent the base 22 of the wash chamber housing 14.

[0052] In the illustrated embodiment, the area of ​​the wash chamber housing 14 through which the wash return nozzle 12e extends comprises a flat base 22, however it will be understood that the wash chamber housing 14 may comprise one or more recesses or other forms of hollow portions to provide a reservoir in which wash fluid can collect and which can receive the wash return nozzle 12e during use.

[0053] In some embodiments, the base 22 of the wash chamber housing 14 may be disposed so that it is horizontal when in the deployed position, or may be angled towards the location of the wash return nozzle 12e so that the wash fluid drops towards the wash return nozzle 12e for improved extraction of the wash fluid. The angle of the base 22 may be provided by the overall orientation of the wash chamber housing 14 when in the deployed position, or by the base 22 being angled relative to the top surface that abuts the nozzle array sealing surface 18.

[0054] The slope of the base 22 may be in a single plane or may be toward a single point such that the flow lines between each output nozzle are inclined toward the rinse return nozzle 12e. The area 12e' of the wash chamber housing 14 opposite the rinse return nozzle 12e may be referred to as a sump area. Providing the rinse return nozzle 12e in a sump area allows for the removal of rinse fluid from the internal cavity 16 to a level lower than the end of the beverage outlet nozzles 12a-12d.

[0055] As mentioned above, the nozzle array 10 may include a nozzle array body 20 from which the nozzles 12a-12e extend. In the illustrated embodiment, the nozzle array body 20 includes a plate-like structure from which the nozzles 12a-12e extend from a substantially flat outer underside thereof, although this is not limiting and other configurations are possible within the scope of the present disclosure. For example, the nozzle array 10 may include sealing elements or other features to improve the sealing surface 18 against which the wash chamber housing 14 can be biased.

[0056] Nozzles 12a-12e are generally cylindrical with a central axis extending perpendicularly from the surface of nozzle array body 20. The diameter of nozzles 12a-12e may vary depending on the application and type of nozzle.

[0057] When in the cleaning configuration, the nozzles 12a-12e may have a length that extends toward and determines their separation from the cleaning chamber housing base 22. As mentioned above, the cleaning return nozzle 12e may be located closest to the base 22 and may be the longest nozzle of the plurality of nozzles 12a-12e. The length of the nozzles 12a-12e may be inferred from the exterior surface nozzle array body 20.

[0058] The wash chamber housing 14 comprises a plate-like structure having a hollow on one side thereof defining an internal cavity 16 in which the plurality of nozzles 12a-12e are received. The internal cavity 16 comprises a base 22 and at least one peripheral sidewall 24. An upper end of the internal cavity 16 which faces and receives the nozzles 12a-12e is generally uncovered. Thus, in use, the base 22 is provided below the nozzle array 10 to provide a tray for receiving and directing wash fluid to the wash return nozzles 12e. An exterior surface of the base (hidden in the figures) provides the exterior surface of the nozzle array 10 when in the deployed position and during the wash procedure.

[0059] Peripheral sidewall 24 of interior cavity 16 is generally circular to define a rounded cavity for receiving outlet nozzles 12a-12e, although other shapes may be used in some embodiments.

[0060] The distal end of the sidewall 24 terminates in a top surface 26 of the wash housing chamber 14 that faces the nozzle array 10 in the deployed position. The top surface 26 may define a sealing surface that is biased against the nozzle array sealing surface 18 to define and seal the wash chamber. The sealing surface 26 may include a sealing element 28, such as a gasket or O-ring, to assist in sealing.

[0061] A sealing element 28 may be provided on the wash chamber housing top surface 26 and / or the nozzle array 10. Providing a sealing element 28 on the wash chamber housing 14 may be preferred in some embodiments as it allows the facing surface of the nozzle array 10 to be flat and smooth. Having flat and smooth walls surrounding the nozzles 12a-12e on the nozzle array 10 may be considered preferable from a hygienic and aesthetic standpoint.

[0062] The location of the sealing element 28 may be at the terminal edge of the sidewall 24 so as to confine the extent of the sealed chamber to the interior cavity 16. However, the sealing element may be located at other locations in other embodiments.

[0063] The wash chamber interior cavity 16 may be generally smooth-walled and have a flat base 22 and uniformly circumferentially curved sidewalls. In this manner, the interior cavity 16 may house nozzles having a common volume. However, as can be seen in the embodiment shown in FIG. 1, the wash chamber housing 14 may include one or more features to aid in cleaning of multiple nozzles, outlet nozzles 12a-12d.

[0064] FIG. 1 shows a number of interior wells 30 capable of individually receiving nozzles 12a-12d. The area without wells, indicated by dashed circle 12e', reflects the location of wash return nozzle 12e. Wells 30 may take the form of bowls defining well cavities (which may be referred to as wash cavities) that are dimensioned to loosely receive respective outlet nozzles therein. Wells 30 each include a base 30a and a sidewall 30b extending upwardly from well base 30a to define a nozzle receiving recess / bowl of well 30. Nozzles 12a-12d are received within respective wells 30 such that there is a space between base 30a and sidewall 30b around the exterior surface of the nozzle's terminal end.

[0065] The spacing between the nozzles 12a-12d and the opposing surfaces of the wells 30 provided by the base 30a or sidewalls 30b may be suitably sized to provide a fluid path for the flow of cleaning fluid around the exterior of the nozzles 12a-12d. The spacing between the nozzles 12a-12d and the sidewalls 30b of the wells may be uniform around the entire circumference of the nozzles 12a-12d, thereby helping to provide a substantially uniform flow of cleaning fluid during use.

[0066] As wash fluid is introduced into the well 30 from the outlet nozzles 12a-12d, it passes along the interior surfaces of the nozzles 12a-12d before being redirected by the base 30a of the well and directed outwardly along the exterior surfaces of the nozzle hands by the sidewalls 30b. As shown, the well 30 may be open ended to allow fluid to flow freely over the upper edges of the sidewalls of the well 30 into the volume of the interior cavity 16 and into a reservoir 12e' for extraction by the common wash return nozzle 12e.

[0067] Each well 30 may be formed on, or as part of, an upright / pedestal that is elevated and extends from the wash chamber housing base 22. Each base 30a may be at the same height or at an elevated position relative to the wash chamber housing base 22, and each base 30a may be at a different height than the other bases and sidewalls 30b. From the above, it will be appreciated that the nozzles 12a-12d may be concentrically disposed above the wells 30.

[0068] To prevent the wells 30 from trapping washing fluid, each well 30 may be provided with a drain opening 30c so that water may flow into the interior cavity 16 of the washing chamber from which the wash return nozzles 12e act as a reservoir. The drain openings 30c may be any suitable orifice in the sidewall 30b or base 30a of the well 30 and may be suitably sized to prevent excessive amounts of washing fluid from being drained from the well during a washing operation, thereby ensuring suitable flow around the exterior surfaces of the nozzles 12a-12d.

[0069] 1, sidewall 30b includes a notch extending from the distal end of sidewall 30b to base 30c. The notch may be provided at any circumferential location around sidewall 30b or base 30a, but as can be seen, may be provided proximal to rinse return nozzle 12e so that any residual irrigation fluid is expelled in a general trajectory toward the rinse return nozzle to aid in timely extraction of the fluid.

[0070] The movement of the wash chamber housing 14 is indicated generally by arrow 32 shown in Figure 1, whereby the wash chamber housing 14 is moved forward from behind the nozzle array 10 to below the nozzle array 10 and then urged upwardly to seal against the underside of the nozzle array to provide a sealed wash chamber.

[0071] The orientation of the washing chamber housing 14 may change while moving between the stored and deployed positions, but in preferred embodiments may remain facing generally upward and / or toward the nozzle array 10.

[0072] To move the washing chamber housing 14 from the stowed position to the deployed position and back, the beverage dispenser may be provided with a drive mechanism. An embodiment of the drive mechanism 300 is shown in Figures 3a and 3b, where the washing chamber housing 14 is in the stowed and deployed positions, respectively.

[0073] The drive mechanism 300 may include a linear drive having a shuttle track 334 along which the wash chamber housing 14 is urged, and in some embodiments pivoted. The shuttle track 334 may be provided by any suitable track along which the wash chamber housing 14 can be guided.

[0074] The shuttle track 334 may be a rail, slot, channel, groove, or any other suitable type of protrusion, recess, or opening. The shuttle track 334 shown in Figures 3a and 3b comprises an elongated slot in a wall 335 or other suitable structure flanking the side of the nozzle array 10. The wall 335 may be a wall of a nozzle array housing 340 in which the nozzle array 10 is provided.

[0075] The nozzle array housing 340 may comprise a housing or portion of the beverage dispensing apparatus in which the nozzle array 10, the wash chamber housing 14, and / or the drive mechanism 300 are provided. The nozzle array housing 340 may comprise one or more walls and suitable features for mounting the nozzle array 10, the drive mechanism 300, and the wash chamber housing 14.

[0076] The shuttle track 334 may be configured to slidably receive one or more shuttle engagement members 342 that are mounted to the wash chamber housing 14. It will be understood that the configuration of the shuttle engagement members 342 will depend on the configuration of the shuttle track 334.

[0077] 3a and 3b, in embodiments in which the shuttle track 334 is a slot, the shuttle engagement member 342 may be a protrusion, e.g., a pin, that is received in the slot. The engagement member 342 may be configured to be slidable and rotatable along the length of the shuttle track 334. In this manner, the shuttle engagement member 342 may define an axis of rotation about which the wash chamber 14 housing may rotate / pivot.

[0078] An advantage of using a shuttle engagement member 342 that is slidably and rotatably engaged within the track 334 is that it allows for axial translation of the wash chamber housing 14 and pivotal movement relative to the nozzle array 10 .

[0079] Thus, the washing chamber housing 14 may change angular orientation as it traverses the length of the shuttle track 334. This allows the washing chamber housing 14 to be moved below the nozzle array 10 and also allows the washing chamber housing 14 to be pivoted away from the nozzle array 10 such that the pivoting action biases the washing chamber housing 14 and the nozzle array 10 together.

[0080] Additionally, the sliding pivot arrangement means that the washing chamber housing 16 can be moved using a simple actuator arrangement such as those described herein, which can reduce the complexity of the drive used to deploy the washing chamber housing 16.

[0081] A further advantage of this arrangement is that by precisely shaping the shuttle track the clearance required to move the washing chamber housing from the stowed position to the deployed position can be minimised, thus reducing the risk of the washing chamber housing hitting a beverage container left under the outlet nozzle when moving between the stowed and deployed positions.

[0082] Although not shown in the drawings, there may be multiple shuttle tracks 334 and drive mechanisms, one on either side of the nozzle array 10, so that the wash chamber housing 14 may be supported on either side. Providing support on either side of the nozzle array 10 may allow for a smoother transition of the wash chamber housing 14 between the stowed and deployed positions and may allow for an improved, more uniform seal between the wash chamber housing 14 and the nozzle array 10.

[0083] The shuttle engagement member 342 may be provided in any suitable location on the wash chamber housing 14. In the illustrated embodiment, the shuttle engagement member 342 is provided toward the front of the wash chamber housing 14. Providing the shuttle engagement member 342 toward the front of the wash chamber housing 14 and providing the drive linkage 346, which is actuated to move the wash chamber housing 14, toward or at the rear utilizes the available length of the wash chamber housing 14 to reduce the drive force required to lever the wash chamber housing 14 into place, thereby forming a seal.

[0084] The shuttle engagement member 342 may be provided above the plane of the washing chamber housing base 22. To accomplish this, the shuttle engagement member 342 may be provided at the distal end of an arm 344 that extends upwardly from the upper surface of the washing chamber housing 14. The use of the arm 344 allows the corresponding shuttle track 334 to be located above the lower surface of the nozzle array 10, thereby hiding it within the nozzle array housing 340 of the beverage dispensing apparatus. The shuttle engagement member 342 may extend outwardly from the arm 344 along the axis of rotation of the washing chamber housing 14. The arm 344 can be seen more clearly in Figures 4c and 4d.

[0085] It will be appreciated that in some embodiments, the positions of the shuttle engagement member 342 and the drive link 346 may be reversed such that the drive link 346 is mounted on the front surface of the cleaning chamber housing 14 and the shuttle engagement member 342 is provided on the rear surface.

[0086] The spacing between the shuttle engagement member 342 and the sealing surface 26 of the wash chamber housing 14 may correspond to the vertical distance between the second end 338 of the shuttle track 334 and the sealing surface 18 of the nozzle array 10. Thus, when the shuttle engagement member 342 is at the second end 338 of the shuttle track 334, the wash chamber housing 14 may be urged against the sealing surface of the nozzle array 10.

[0087] As shown, the shuttle track 334 may extend from the rear of the nozzle array 10 to the front of the nozzle array 10 for axial movement of the wash chamber housing 14 from a rearward stored position to a forward deployed position. The shuttle track 334 may follow a circuitous path between a first end 336 representing a start point and a second end 338 representing an end point. The start point may be associated with a stored position and the end point may be a deployed position.

[0088] The circuitous path may be a curved path such that the height of the shuttle engagement member 342 and the orientation of the washing chamber housing 14 relative to the nozzle array 10 can be changed as the washing chamber housing 14 moves along the length of the shuttle track 334. A first end 336 of the shuttle track 334 may be above a second end 338 and the nozzle array 10 such that the washing chamber housing 14 is positioned above and behind the nozzle array 10, sealing surface 18 and / or nozzles 12a-12e and is completely hidden when in the retracted position.

[0089] 3a and 3b, the shuttle track 334 extends forward and downward from a first end 336 to a minimum generally located at about the midpoint of the length of the track 334 before curving upwardly toward the second end. The shuttle track 334 is shown to curve continuously from the first end 336 to the second end 338, with the direction of the curve changing with a local bend relative to the second end 338 to terminate in a short horizontal section where the shuttle engagement member 342 resides in a deployed position.

[0090] Although the track 334 is shown as continuously curved, it will be understood that there may be one or more straight sections and that the horizontal termination is optional. The shuttle track 334 may be generally described as being shallow U-shaped. It will be understood that the exact form of the shape of the shuttle track 334 may vary in other embodiments.

[0091] For example, the relative heights of the first end 336 and the second end 338 may be similar, or the second end 338 may be taller. Further, the midpoint of the curve may be shifted toward the first end 336 or the second end 338. Furthermore, the track 334 may not be continuously curved, but may include one or more straight sections.

[0092] A first portion of the shuttle track 334 extending from the first end 336 toward the bottom includes a generally downward trajectory to move the washing chamber housing 14 downward to a position where it can be moved forward to its lowest point below the nozzle array 10.

[0093] From here, further forward movement of the washing chamber housing 14 will raise the front end relative to the nozzle array 10 and the rear surface of the washing chamber housing 14 will rise towards the end of the track 334. From here, as described further below, rotating the washing chamber housing 14 about the pivot of the shuttle engagement member 342 will further act to lift the rear surface of the washing chamber housing 14 so that sealing contact is made between the washing chamber housing 14 and the nozzle array 10.

[0094] The drive mechanism may include an actuator 348 configured to reciprocate the wash chamber housing 14 from a stored position to a deployed position. The actuator 348 may be a linear or rotary drive, as is well known in the art. The drive mechanism may be electrically operated and may include one or more electric motors 348, e.g., stepper motors.

[0095] The drive mechanism 300 may further comprise a crank whereby rotation of the rotor causes linear motion of the wash chamber housing 14 via a drive link 346 (which may be referred to as a push rod). The drive link 346 may extend between a drive arm 350 of the rotor and the wash chamber housing 14 and may be rotatably / pivotally connected at either end to allow relative rotation with respect to the rotor and the wash chamber housing 14.

[0096] In the illustrated embodiment, the electric motor 348 engages and rotates a rotor drive arm 350. The rotor drive arm 350 may be directly connected to the shaft of the electric motor 348 or may be connected via one or more gears. In the illustrated embodiment, the electric motor 348 drives the drive arm 350 via a worm drive 352. The worm drive 352 may include a worm screw 352a and a worm gear 352b and may be configured to rotate the drive arms 350 on both sides of the wash chamber housing 14. In this manner, the drive mechanism 300 may include a single motor that drives both sides of the wash chamber housing 14 simultaneously.

[0097] Drive arm 350 is coupled to shaft 354 of worm gear 352b via a suitable attachment, such as a spline, such that rotation of shaft 354 causes rotation of drive arm 350. A distal portion of drive arm 350 is attached to drive link 346 via a pivot such that drive link 346 and drive arm 350 can rotate relative to one another.

[0098] The distal end of the drive articulation 346 is attached to the wash chamber housing 14 via a further pivot such that the drive articulation 346 and the wash chamber housing 14 can rotate relative to one another. The opposite end of the wash chamber housing 14 includes a shuttle engagement member 342 that extends into the shuttle track 334. Engagement between the shuttle track 334 and the shuttle engagement member 342 allows the wash chamber housing 14 to slide back and forth and to pivot relative to the shuttle track 334.

[0099] The arrangement also includes a tension member 356 in the form of a spring that urges the drive arm 350 and the drive link 346 away from each other, thereby urging the washing chamber housing 14 forward when in the deployed position and / or lifting the washing chamber housing 14 when in the stored position.

[0100] The length and location of the drive shaft 354, drive arm 350, drive articulation 346, connection points on the washing chamber housing 14, and the angle at which the drive arm travels may be varied according to the particular embodiment and the desired path of travel of the washing chamber housing 14. In some embodiments, the washing chamber housing 14 may be stored in a position generally aligned with the initial drop of the shuttle track 334 so that the washing chamber housing 14 may be more easily moved along the track 334 when urged forward. The angle between the plane of the washing chamber housing 14 and the horizontal plane may be between 0 degrees and 90 degrees, optionally between 40 degrees and 50 degrees, optionally 45 degrees. When in the deployed position, the drive articulation 346 may be in a substantially vertical orientation so that the washing chamber housing 14 may be more easily urged onto the nozzle array 10.

[0101] The angular range through which the drive arm 350 travels may be between 180 degrees and 90 degrees.

[0102] Figures 4a-h show the progressive movement of the washing chamber housing 14 and drive mechanism 300 at various stages of deployment, and although reference numbers are not included in these figures, it will be understood that features correspond to those of Figures 3a and 3b.

[0103] More specifically, Figure 4a shows the cleaning chamber housing 14 in a stored position and is the same as Figure 3a, Figure 4b shows the initial drop stage of movement where rotation of the drive arm results in the cleaning chamber housing 14 dropping from the housing of the nozzle array 10, Figures 4c to 4e show continued rotation of the drive arm and transition of the shuttle engagement member along the shuttle track, Figure 4f shows the shuttle engagement member reaching the end of the shuttle track, Figure 4g shows continued rotation of the drive arm resulting in lifting of the rear end of the cleaning chamber housing, and Figure 4h shows the end of the drive arm rotation stage where the cleaning chamber housing 14 and nozzle array 10 are both sealably biased so that the cleaning process can be performed.

[0104] The drive mechanism 300 of Figures 4a-4h corresponds to that shown in Figures 3a and 3b, so reference numerals will not be repeated to avoid obscuring the drawings.

[0105] Once the cleaning process has been performed, the steps shown in Figures 4a-4h may be reversed to move the cleaning chamber housing 14 from the deployed position to the stowed position.

[0106] It will be appreciated that any fluid remaining in the washing chamber housing 14 after the washing process may be allowed to evaporate.

[0107] 5 shows a beverage dispensing apparatus 500 in the form of a coffee machine. The reference numerals 5XX correspond to the previously used reference numerals XX and 3XX. The coffee machine 500 comprises an outlet nozzle array 510 and a wash chamber housing 514 according to the present disclosure. Although not shown, the nozzle array 510 will be located above a beverage container in use. The beverage container may be provided on a drip tray.

[0108] As shown, the beverage dispensing apparatus 500 may include one or more beverage preparation modules, such as a coffee module 558 configured to receive dry coffee powder and brew coffee for dispensing from one of the outlet nozzles 12a-12d, a milk module 560 which may be configured to provide heated and / or frothed milk for dispensing from one of the outlet nozzles 12a-12d, a mixing module 562 for mixing the dry powder with a fluid, such as chocolate powder and water, for dispensing into another of the outlet nozzles 12a-12d, a cleaning module 564 configured to provide a cleaning agent for cleaning the various modules, and a water heater module 566 configured to heat water.

[0109] It will be understood that the various modules 558-566 described herein are exemplary and that various embodiments may include fewer or more modules, and the modules may differ from those described. For example, the beverage dispensing apparatus may be or include equipment for making soup or other edible products, or may be a tea making machine. Other examples may be known to those skilled in the art. Moreover, the modules 558-566 themselves may be considered conventional in many respects, and therefore their internal operation will not be described in detail.

[0110] The modules 558-566 of the beverage dispenser machine 500 may each be connected to an outlet nozzle array 510 comprising a plurality of outlet nozzles 512a-512d as disclosed above, whereby a coffee extractor 558 is connected to the first outlet nozzle 512a, a milk module 560 is connected to the second outlet nozzle 512b, a mixing module 562 is connected to the third outlet nozzle 512c and a water supply 570 is connected to the fourth outlet nozzle 512d, either directly or via a water heater module 566.

[0111] Each of the water heater module 566, the milk module 560, the coffee module 558, and the mixing module 562 are all configured to receive water directly or indirectly from a water source and from the cleaning module 564. The cleaning module 564 is further connected to an external drain 582 and a cleaning return nozzle 512e. The cleaning return nozzle 512e is connected to the external drain 582. It will be appreciated that the external drain 580 may be connected to a mains drain within the premises in which the apparatus 500 is located, or may be connected to a suitable container for temporary storage of waste.

[0112] Interconnection of the various modules 558-566 and external drain 582 is accomplished using suitable piping and valves 574-580 that are selectively operable under the control of controller 568 to connect the various modules 558-566 and nozzles 12a-12e according to a desired configuration. The valves may be any suitable valves known in the art and may include one-way valves 572, 573, isolation valves 575-579, three-way valves 574, 580, etc. The valves 574-580 may be controlled via controller 568 according to a predetermined operating schedule required for beverage preparation and cleaning.

[0113] The water inlet 570 provides pressurized water to the beverage dispenser 500, as is known in the art. Although not shown, it will be appreciated that the beverage dispenser 500, or modules thereof, may include one or more pumps for pumping various fluids between the modules and the outlet nozzles 512a-512e.

[0114] The presence of the wash chamber housing 514 allows for the creation of fluid circuits between each of the modules 558-566 and the drain 582, and between each of the beverage preparation modules 558-562 and the wash module 564. The presence of the wash chamber housing 514 thus provides a convenient way of passing a wash fluid (e.g., a wash fluid containing cold or hot water, steam, or a cleaning agent) through the respective piping and outlet nozzles 512a-512d for washing all of the beverage preparation modules 558-562, as well as each of the modules 558-562, in an automated and convenient manner.

[0115] Because the wash chamber 584 is sealed, the wash fluid is allowed to circulate for a predetermined duration before being discharged to the external drain 582. The different beverage preparation modules 558-562 may be washed individually. However, in some embodiments, the wash fluid may be circulated through multiple beverage preparation modules 558-562 in series or parallel before being discharged to the drain 582. It will be appreciated that additional conduits than those shown in FIG. 5 may be required to achieve continuous flow through the modules 558-562.

[0116] The cleaning process may include a residual flush stage in which hot and / or cold water is flushed through each of the beverage preparation modules 558-562 in sequence and associated piping before being drained through an external drain 582 via a cleaning chamber 584. The cleaning process may additionally or alternatively include a sanitizing stage in which a cleaning fluid including a cleaning agent is circulated through the various beverage preparation modules 558-562. In some embodiments, the cleaning fluid may be generated within the cleaning module 564.

[0117] To generate a cleaning fluid within the cleaning module 564, hot water may be circulated through the cleaning module 564 and the hot water module 566 via the cleaning chamber 584 and associated piping. The cleaning module 564 may be configured to add a cleaning agent to the hot water to prepare a hot cleaning fluid containing the appropriate cleaning agent.

[0118] Hot water may be continuously circulated around the cleaning module-water heater module loop to provide a suitably mixed and heated cleaning fluid. Once prepared, the sanitizing phase may continue by circulating the prepared cleaning fluid through each of the beverage preparation modules 558-562, either individually or in series via the cleaning chamber 584 in a closed loop. Following the sanitizing phase, the cleaning process may include a cleaning fluid flush phase, in which cold and / or hot water is used to flush one or more of the beverage preparation modules 558-563 through the cleaning chamber 584 and into the drain 582.

[0119] The cleaning stage may additionally or alternatively include an air purge in which air is allowed to flow through one or more of the various modules, conduits, nozzles 512a-e, and cleaning chambers to clear any residual cleaning fluid and / or water. Thus, the beverage dispensing apparatus 500 may include one or more air sources and vents for introducing, and optionally forcing, air through the cleaning chamber 584.

[0120] As an example, cold water can be provided to the water heater module via isolation valve 575 and check valve 573 to wash the coffee module 558. Once heated, valves 574 and 577 can be opened to send hot water through the coffee module 577 and the pipe connecting the coffee module 558 to the nozzle 512a. The hot water then enters the wash chamber 584 where it is contained by the wash chamber housing 514, the nozzle array 512 and the seal 528 before being extracted through the wash return nozzle 512e and through the valve 580 to the external drain 582.

[0121] In the disinfection phase, the water heater module 566 is connected to the cleaning module 564 via valves 574, 577, and 584, and through the cleaning chamber 584. The hot water is used to dissolve the cleaning agent in the cleaning module 564, and is returned to the water heater module 566 via check valve 572. Water may be continuously circulated in this manner through the hot water module 566 and the cleaning module 564 until a suitable temperature and / or amount of cleaning agent is dissolved in the hot water to provide a suitable cleaning fluid.

[0122] Following this, the left flow path of valve portion 574 can be opened to bypass the water heater module 566, and valve portion 577 can be opened to allow wash fluid to flow through the coffee module 558 and into the wash chamber 584. The outlet of the valve portion that extends to the drain 580 can be closed at this point.

[0123] Once sufficient water flow has passed through the coffee module 558, the drain outlet of the valve portion 580 can be opened to allow the used cleaning fluid to be dispensed through an external drain. The outlet of the valve portion 580 that connects to the cleaning module 564 can be closed at this point.

[0124] The wash fluid flush stage is similar to the residue flush stage, except that instead of the water passing through the water heater module 566, the cold water inlet valve of valve section 574 is opened to allow the water to bypass the hot water module 566 and flow directly to the coffee module 558 and external drain 582.

[0125] It will be appreciated that the other beverage dispense modules 560 and 562 may be cleaned in a similar manner through control of valves 576 and 579, and may be cleaned sequentially with each of the cleaning stages. It will also be appreciated that the cleaning process may differ from that described above. For example, in some embodiments, the cleaning fluid may be prepared outside of the beverage dispense machine 500 or may be provided as a premixed solution. In that case, the steps associated with preparing the cleaning fluid may be omitted. In other embodiments, a residual flush may not be required or may be achieved using a closed cleaning circuit. Additionally, the cleaning chamber 584 may be purged of water or cleaning fluid using air.

[0126] As mentioned above, the beverage dispensing apparatus 500 may include a controller 568 configured to control various parts of the beverage dispensing apparatus 500 to enable a beverage to be prepared and dispensed, and to perform any necessary cleaning processes in response to instructions from a user.

[0127] Thus, although not shown, a controller 568 is connected to each of the valve sections and modules of the beverage dispenser machine 500 to enable the actuation and sensing required during the beverage preparation or cleaning process. The controller 568, the actuators and sensors provided in the various sections, as well as communication lines for sending and receiving commands or data to and from the sensors are conventional and well known in the art and will not be described in detail herein.

[0128] It will be appreciated throughout this disclosure that the controller 568 may be configured to operate the drive mechanism 300 such that the washing chamber housing 514 may be moved between the stored position and the deployed position as needed during the cleaning process. Thus, the cleaning process described herein in connection with the present apparatus 500 may begin with moving the washing chamber housing 514 to the deployed position such that the washing chamber housing 514 is sealably coupled to the nozzle array 512 to form the washing chamber 584.

[0129] The controller 568 may include a user interface. The user interface may be configured to receive instructions from a user and / or provide a display to provide information to a user. The user interface may include an output display 588 and an input device 586, such as a touch screen input device or one or more buttons, for example, to allow a user to select options or operate the machine.

[0130] The controller 568 may be configured to allow a user to, for example, select a drink type to dispense or select a cleaning operation, and / or may be configured to provide, for example, the level of stock or the operating status of the machine 500.

[0131] The controller 568 may include a timer and / or scheduler that allows the cleaning operation to be performed at a specified time and / or according to a predetermined schedule. Thus, the controller 568 may be configured to perform the cleaning operation automatically and without user interaction. Due to the configuration of the cleaning chamber housing 514 and the nozzle array 512, a user is not required to take any specific action with respect to the cleaning operation of the beverage dispenser 500, and thus may schedule cleaning for preferred times of day or week, such as after hours and / or after predetermined operating hours.

[0132] It will be appreciated that the nozzle arrangement and wash chamber housing of the present disclosure is advantageous as it allows a wash circuit to be formed within the beverage dispensing device, which is not only convenient but also allows for a large degree of automation of the cleaning of the device.

[0133] A further advantage of the wash chamber housing and nozzle arrangement is that each of the fluid paths for each of the drinkable fluids can be washed from the beverage preparation module to the nozzle, including the exterior of the nozzle.

[0134] Furthermore, in some embodiments, since the washing chamber formed by the nozzle array and the washing chamber housing is sealed, a washing circuit can be used to pass one or more of cold, hot and washing fluids around the various beverage preparation modules of the beverage dispensing device. The washing circuit can be a closed circuit and / or an open circuit, where the circulating fluid is dispensed to an external drain. Furthermore, the washing fluid can be circulated continuously or left submerged to allow a suitable level of cleanliness to be achieved.

[0135] The apparatus is capable of heating the cleaning fluid to a temperature of at least 50°C, preferably at least 60°C, preferably at least 70°C, most preferably about 75°C.

[0136] The apparatus may circulate the cleaning fluid through all of the subsystems at an elevated temperature for a selected period of time, for example, at least 2 minutes, preferably at least 3 minutes, preferably at least 4 minutes, and more preferably at least 5 minutes.

[0137] The wash fluid can then be drained from the dispenseable fluid circuit. Preferably, all subsystems can then be flushed to remove any residual wash fluid. The exit dock can then be opened to return the device to dispense mode.

[0138] The device may be used in an intermediate rinse mode in which the outlet dock may be closed to isolate the dispenseable fluid source so that the device may enter the intermediate rinse mode. Preferably, all subsystems may then be flushed to remove any dispenseable fluid residue from the dispenseable fluid circuit. After this, the outlet dock may then be opened to return the device to the dispense mode.

[0139] One or more embodiments have been described above by way of example only - many variations are possible without departing from the scope of protection granted by the appended claims.

Claims

1. A beverage dispensing device, comprising: a nozzle array comprising a plurality of nozzles, at least one of the plurality of nozzles being an outlet nozzle for dispensing a potable fluid and at least one of the plurality of nozzles being a rinse return nozzle; a cleaning chamber housing repeatedly movable between a retracted position and a deployed position for cleaning the nozzle array, the cleaning chamber housing including an internal cavity in which the plurality of nozzles are sealably received when the nozzles are in the deployed position; a cleaning chamber housing.

2. the plurality of nozzles are configured to extend into the internal cavity when the washing chamber housing is in the deployed position; the wash return nozzle is provided at a lowest point of the internal cavity relative to the at least one outlet nozzle; 10. The apparatus of claim 1.

3. the wash chamber housing including a peripheral seal that seals against the nozzle array to collectively seal the plurality of nozzles within the interior cavity.

10. The apparatus of claim 1.

4. the plurality of nozzles extend from a proximal end attached to the nozzle array body to a distal end, the distance between the proximal end and the distal end defining a length of each nozzle, and the wash return nozzle having the longest length of the plurality of nozzles; 10. The apparatus of claim 1.

5. the plurality of outlet nozzles comprises at least one or more of the group comprising: a coffee outlet nozzle, a chocolate outlet nozzle, a milk outlet nozzle, and a water outlet nozzle; 10. The apparatus of claim 1.

6. the washing chamber housing includes a well for each of the outlet nozzles, each well including well sidewalls defining a washing cavity that receives a terminal end of the respective outlet nozzle, the well sidewalls configured to redirect washing fluid ejected from the respective outlet nozzle along an exterior surface of the respective outlet nozzle; 10. The apparatus of claim 1.

7. each well includes a well base, the well base being elevated relative to a base of the wash chamber housing; 7. The apparatus of claim 6.

8. each well sidewall including a well drain through which washing fluid can flow from the well into the washing chamber housing; 7. The apparatus of claim 6.

9. the well drains have openings in the sidewalls of each well.

9. The apparatus of claim 8.

10. the well drain faces the wash return nozzle to direct the outflow of wash fluid toward the wash return nozzle; 10. The apparatus of claim 9.

11. a drive mechanism operable to move the washing chamber housing between the stowed position and the deployed position; 10. The apparatus of claim 1.

12. the drive mechanism includes a shuttle track along which the washing chamber housing is driven to move between the stowed position and the deployed position; 12. The apparatus of claim 11.

13. the drive mechanism includes a drive arm that is rotatable to slide the wash chamber housing along the shuttle track.

13. The apparatus of claim 12.

14. the shuttle track is configured to receive a shuttle engagement member of the wash chamber housing, the shuttle engagement member being configured to rotate within and slide along the shuttle track under the influence of the drive arm; 14. The apparatus of claim 13.

15. the shuttle engagement member is provided at a first end of the wash chamber housing, and the drive arm is drivingly connected to a second end of the wash chamber housing.

15. The apparatus of claim 14.

16. the wash chamber housing is rotatably biased relative to the nozzle array; 10. The apparatus of claim 1.

17. further comprising one or more beverage preparation modules, the wash chamber housing forming part of a wash circuit through which wash fluid is circulated through the one or more beverage preparation modules and the wash chamber housing.

10. The apparatus of claim 1.

18. 10. A method for cleaning a beverage dispenser according to claim 1, comprising: The method comprises: sealably engaging the nozzle array with the wash chamber housing to provide a wash chamber around the plurality of nozzles; circulating a cleaning fluid through the cleaning chamber. method.

19. the beverage dispenser includes a beverage preparation module, and the cleaning fluid is circulated through the beverage preparation module before being sent to an external drain.

20. The method of claim 18.

20. further comprising using an airflow to clear residual fluid from the washing chamber.

20. The method of claim 18.

Images