Connector for a fluid dispensing device - Patent application

Abstract

The present disclosure provides a connector for manually connecting a dispensable fluid to a fluid dispensing device, the connector comprising a cleaning fluid inlet, a dispensable fluid inlet, and an outlet, the cleaning fluid inlet being in fluid communication with the outlet via a cleaning fluid flow path, and the dispensable fluid inlet being in fluid communication with the outlet via a dispensable fluid flow path. Also disclosed is a fluid dispensing device, such as a coffee dispensing device, comprising the connector.

Description

[Technical field]

[0001] The present disclosure relates to a connector for a fluid dispensing device and to a fluid dispensing device comprising a connector.The connector may be used with a coffee dispensing machine to connect a source of milk. [Background technology]

[0002] Coffee dispensing machines for preparing and dispensing coffee beverages are well known in the art. Many of these known machines include an option to dispense beverages that include milk. The milk is typically drawn from an external container, such as a milk bottle or reservoir, which is refilled as needed. The external container is typically connected to the dispensing machine via a connector. The connector may be attached directly to the container or may be attached directly via a flexible conduit.

[0003] In order to maintain the quality of the beverage, the piping associated with the milk source, including the connectors, needs to be cleaned. Examples of prior art including cleaning means are provided in US Patent No. 8,763,516, US Patent No. 8,739,688 and US Patent Application Publication No. 2010 / 0146503.

[0004] No. 8,763,516 describes a device containing a cleanable supply line for supplying milk from a storage container to a dispensing device. The cleaning mechanism is provided outside the supply line, including a rinsing area for supporting the part of the supply line to be cleaned. The rinsing area includes inlets for hot water, steam, detergent and cold water, and a connecting opening for the removable introduction of the part to be cleaned.

[0005] US Pat. No. 8,739,688 describes a device for supplying milk from a storage tank to a dispensing element having a supply line with an inlet end removably connected to the storage tank for cleaning.

[0006] US Patent Application Publication No. 2010 / 0146503 describes a milk supply line that is manually connectable to a cleaning agent transport line that provides cleaning agent through a milk supply line and a three-way valve.

[0007] These prior art devices require the user to attach the milk inlet to the cleaning device before cleaning to enable cleaning, which can be confusing for the user and introduces the risk of human error.

[0008] The present invention seeks to provide an improved fluid dispensing system. Summary of the Invention

[0009] The present invention provides a connector and a fluid dispensing device according to the accompanying claims.The present invention may provide a method of operating a fluid dispensing machine.

[0010] In a first aspect, the present disclosure provides a connector for manually connecting a dispensable fluid to a fluid dispensing device, the connector comprising a cleaning fluid inlet, a dispensable fluid inlet, and an outlet, the cleaning fluid inlet being in fluid communication with the outlet via a cleaning fluid flow path, and the dispensable fluid inlet being in fluid communication with the outlet via the dispensable fluid flow path.

[0011] The connector may further comprise a main body. The main body may comprise a cleaning fluid inlet and outlet. The connector may comprise a dispensable fluid connector. The dispensable fluid connector may be removably attachable to the main body and may comprise a dispensable fluid inlet. The dispensable fluid connector may be configured to connect a dispensable fluid conduit that fluidly connects a source of dispensable fluid to the connector.

[0012] The outlet may be in fluid communication with the cleaning fluid inlet to provide a cleaning fluid flow path through the main body and / or the distributable fluid connector. The cleaning fluid flow path may include a first cleaning fluid flow path through the main body and a second cleaning fluid flow path through the distributable fluid connector. The first and second cleaning fluid flow paths may be used independently of one another. The connector may be configurable to select either the first or second cleaning fluid flow path. The main body may be configurable to select either the first or second configuration.

[0013] The cleaning fluid flow path and the distributable fluid flow path may be connected at a converging portion upstream of the outlet. An outlet passage common to the cleaning fluid flow path and the distributable fluid flow path may extend between the converging portion and the outlet. The outlet passage may extend through the distributable fluid connector and / or the main body. There may be multiple converging portions: a first converging portion in the main body where the distributable fluid flow path and the cleaning fluid path meet, and a second converging portion in the distributable fluid connector where a second cleaning fluid flow path and the distributable fluid flow path meet.

[0014] The connector may further comprise a valve. The valve may be a one-way valve in the dispensable fluid flow path and / or the cleaning fluid flow path. The valve may be positioned to prevent upstream fluid flow. Either or both of the main body or the dispensable fluid connector may comprise a one-way valve.

[0015] The main body may comprise a first body portion and a second body portion configured to rotate relative to one another between a first configuration in which the cleaning fluid inlet is connected to the outlet via a first cleaning fluid flow path, and a second configuration in which the cleaning fluid inlet is connected to the outlet via a second cleaning fluid flow path.

[0016] The dispensable fluid connector may be rotatable relative to the main body. The dispensable fluid connector may be rotatable relative to the first body portion or the second body portion. Rotation of the dispensable fluid connector may rotate the first and second body portions relative to each other and between first and second positions to provide the first and second configurations.

[0017] The dispensable fluid connector and the main body may be connected via a bayonet fitting. The dispensable fluid connector and the main body may be connected by interengagement of a protrusion and a track. The main body may comprise a track. The track may comprise a channel capable of receiving the protrusion. The channel may comprise a first portion provided by the first body portion and a second portion provided by the second body portion.

[0018] The first portion of the channel can be a closed-ended channel sized to receive the protrusion, and the second portion of the channel can be a through channel. The first and second channel portions can be aligned such that the protrusion passes axially along the channel through the second channel portion and into the first channel portion.

[0019] The first and second channel portions may be aligned in the first configuration and misaligned in the second configuration. The protrusion may be retained within the first channel portion in the second configuration and may be axially insertable or retractable in the first configuration.

[0020] The dispensable fluid may be milk.

[0021] The dispensable fluid connector may comprise a tube for insertion into the container. The dispensable fluid connector may be connectable to the container.

[0022] The dispensable fluid connector may include an exterior surface. The exterior surface may include a gripping feature.

[0023] The one-way valve may be a duckbill valve.

[0024] The dispensable fluid connector may be disposable. Thus, the dispensable fluid connector may be a disposable item, replaceable when the container is replaced or refilled, or at predetermined intervals. The dispensable fluid connector may comprise a biodegradable material. The biodegradable material may be a plastic. The biodegradable material may be polylactic acid, PLA.

[0025] A second aspect of the present disclosure provides a fluid dispensing device. The fluid dispensing device may comprise a connector according to the first aspect of the present disclosure or as described herein. The device may be a coffee dispensing machine. The coffee dispensing machine may comprise or be connected to a source of milk via the connector. The connector forms part of a cleaning fluid circuit of the device.

[0026] The apparatus may include a cleaning system. The cleaning system may comprise one or more sources of cleaning fluid and a cleaning fluid conduit. The cleaning fluid conduit may be attached to a cleaning fluid inlet of the connector. The cleaning fluid conduit may be connected to a drain. The cleaning fluid conduit may comprise a closed circuit through which the cleaning fluid can be continuously circulated. The cleaning fluid conduit may comprise a dispensable fluid conduit.

[0027] The cleaning fluid may include one or more of water and a cleaning agent. The cleaning agent may be a detergent. The cleaning system may include a cleaning agent dispenser.

[0028] The device may further comprise a controller. The controller may be configured to control the flow of irrigation fluid through the connector. The controller may be configured to provide a flow of irrigation fluid through the connector when the dispensable fluid connector is attached to the main body and when the dispensable fluid connector is not attached to the main body.

[0029] The connector may be fixedly attached to the device.

[0030] The cleaning fluid circuit may include one or more of a cleaning agent dispenser, a water supply, a water heater, a drain, and a fluid dispensing nozzle for dispensing fluid from the device.

[0031] In a third aspect of the present disclosure, a method of cleaning a connector in a beverage dispensing system is provided, the method may include connecting a source of dispensable fluid to the connector and circulating a cleaning solution through the connector while the source of dispensable fluid is attached to the connector.

[0032] The method may further include disconnecting the source of dispensable fluid from the connector and circulating a cleaning solution through the connector. The method may further include scheduling a cleaning operation for the connector, the scheduling being predetermined. The cleaning operation may be scheduled regardless of whether the connector is connected or not.

[0033] In one embodiment, a method of (autonomous) cleaning may include closing the exit dock and isolating the source of dispensable fluid so that the device can enter a cleaning mode. Preferably, all subsystems may then be flushed to remove any dispensable fluid residue from the dispensable fluid circuit. Cleaning fluid may then be dispensed into the dispensable fluid circuit.

[0034] This may come from a reservoir containing the cleaning fluid. The device may heat the cleaning fluid to a temperature of at least 50° C., preferably at least 60° C., preferably at least 70° C., and most preferably about 75° C. The device may circulate the cleaning fluid through all of the subsystems at the 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.

[0035] The cleaning fluid can then be drained from the dispensable fluid circuit. Preferably, all subsystems can then be flushed to remove any remaining cleaning fluid. The exit dock can then be opened to return the device to the dispense mode.

[0036] The device can be used in an intermediate rinsing mode that closes the outlet dock to isolate the source of distributable fluid, and as a result, the device can enter the intermediate rinsing mode. Preferably, all subsystems can then be flushed to remove any distributable fluid residue from the distributable fluid circuit. After this, the outlet dock can be opened to return the device to the dispensing mode.

[0037] Those skilled in the art will understand that, unless mutually exclusive, the features described in connection with any one of the aspects, embodiments or examples described herein can be applied to any other aspect, embodiment or example with the necessary modifications. Further, unless mutually exclusive, any feature described herein may be applied to any aspect and / or may be combined with any other feature described herein.

Brief Description of the Drawings

[0038] For a clearer understanding of the present invention, one or more embodiments of the present invention will be described here by way of example only with reference to the accompanying drawings. [Figure 1] A schematic representation of a connector according to the present disclosure is shown. [Diagram 2] A schematic representation of an alternative connector according to the present disclosure is shown. [Figure 3a] A longitudinal cross-section of a connector according to the present disclosure having a plurality of cleaning fluid flow paths is shown. [Figure 3b] A longitudinal cross-section of a connector according to the present disclosure having a plurality of cleaning fluid flow paths is shown. [Figure 3c] A partially axially disassembled perspective view of the connectors of FIGS. 3a and 3b is shown. [Figure 4a-4c] Steps for connecting a distributable fluid connector to the main body of a connector of a further embodiment are shown. [Figure 5a] Longitudinal cross-sections of the connector of FIG. 4a in planes AA and BB respectively are shown. [Figure 5b]4b show longitudinal cross sections of the connector of FIG. 4a in the planes AA and BB, respectively. [Figure 6a] 4c in longitudinal cross-section in the planes AA and BB, respectively. [Figure 6b] 4c in longitudinal cross-section in the planes AA and BB, respectively. [Figure 7] 1 shows a schematic representation of a beverage dispensing apparatus according to the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0039] The present disclosure provides a connector for connecting a dispensable fluid to a fluid dispensing device. The connector may include a first inlet, a second inlet, and an outlet. The connector is configured such that a source of the dispensable fluid may be removably attached to the dispensable fluid device periodically and manually.

[0040] Thus, the connector may comprise a dispensable fluid connector that is manually removably attachable and provides fluid communication with a source of milk. The dispensable fluid connector may be a consumable item that is periodically replaced or may be separately washable independent of the fluid dispensing machine. The dispensable fluid connector may comprise a biodegradable material.

[0041] The first inlet can be a cleaning fluid inlet and the second inlet can be a dispensable fluid inlet. The first and second inlets are configured to be connected to separate fluid supply lines such that a first fluid flow path between the first inlet and the outlet and a second fluid flow path between the second inlet and the outlet are defined.

[0042] The first fluid flow path may be for a cleaning fluid. The second fluid flow path may be for a dispensable fluid. The cleaning fluid may be any suitable cleaning fluid, including, for example, water, steam, or a cleaning solution containing a cleaning agent such as a detergent. The dispensable fluid may be any fluid that is dispensed to a user. In the case of a coffee dispensing machine, the dispensable fluid is typically milk, but other fluids such as syrup, coffee, or other beverage ingredients are also possible.

[0043] The first and second fluid flow paths may be selectively connected to be used independently of one another. The connector may include one or more valves, e.g., one-way valves, to prevent fluid flow upstream from the first inlet to the second inlet and / or fluid flow upstream from the second inlet to the first inlet.

[0044] The connectors of the present disclosure are particularly well suited to being cleaned. Cleaning of the connector requires minimal interaction or reconfiguration from the user. Thus, cleaning of the connector and associated fluid dispensing apparatus can be more automated and requires less user interaction and involvement than prior art arrangements.

[0045] The connector may include a plurality of cleaning fluid flow paths. Thus, there may be a first cleaning fluid flow path and a second cleaning fluid flow path. The first and second fluid flow paths may correspond to first and second configurations, and in use, in the first configuration, the first cleaning fluid flow path provides fluid communication between the first inlet and the outlet, and when in the second configuration, the second cleaning fluid flow path provides fluid communication between the first inlet and the outlet.

[0046] The first configuration may be defined by the connector being detached from the dispensable fluid connector that provides fluid communication with a source of dispensable fluid, and the second configuration may be defined by the attachment of the dispensable fluid connector.

[0047] The connectors of the present disclosure may be reconfigurable between a first configuration and a second configuration by attachment of a dispensable fluid connector, such that attachment of the dispensable fluid connector may move the connector between the first configuration and the second configuration.

[0048] The connector may form part of a flushing circuit of the dispensable fluid device whether or not the connector is connected to a source of dispensable fluid. Thus, the fluid dispensing device may be permanently configured to be flushed whether or not it is connected to a source of dispensable fluid. Given this increased versatility, it is possible to program the fluid dispensing device to undergo a flushing process outside of normal use hours without any additional requirements from the user, such as disconnecting the source of dispensable fluid or connecting the tubing that supplies the dispensable fluid to the device to a flushing mechanism, etc.

[0049] 1 shows a schematic representation of a connector 10 for connecting a dispensable fluid to a fluid dispensing device according to the present disclosure. The connector 10 comprises a main body 12 having a cleaning fluid inlet 14, a dispensable fluid inlet 16, and an outlet 18.

[0050] The cleaning fluid inlet 14 is configured to receive a flow of cleaning fluid in use. The dispensable fluid inlet 16 is configured to receive a fluid for dispensing from the fluid dispensing device. As described below in connection with FIG. 7, the fluid dispensing device may be a beverage dispensing device, such as a coffee dispensing machine, and the dispensable fluid may be any fluid that is dispensed from the fluid dispensing device. In a coffee dispensing machine embodiment, the connector 10 may be used to connect, for example, a source of milk to the machine. However, this is not a limitation and the connector 10 may be used to connect a source of any dispensable fluid to any dispensable fluid device.

[0051] 1, the outlet 18 is in fluid communication with the wash fluid inlet 14 to provide a wash fluid flow path 20 along passages 24 and 26. The outlet 18 is also in fluid communication with the distributable fluid inlet 16 to provide a distribution fluid flow path 22 along passages 24 and 28.

[0052] The cleaning fluid flow paths 20 and the distributable fluid flow paths 22 may meet at a converging portion 23 within the connector 10 to provide a single passageway that extends to the outlet 18. This combined portion of the fluid flow paths may be referred to as the outlet passageway 24 of the connector 10. The portions of the cleaning fluid path 20 and the distribution fluid path 22 upstream of the converging portion 23 may be referred to as a first fluid passageway or cleaning fluid passageway 26 and a second fluid passageway or distributable fluid passageway 28. The converging portion 23 is shown as being within the main body 12 of the connector 10, but may be located outside of the main body, for example, in a distributable fluid connector, as described below.

[0053] In some embodiments, it may be desirable to isolate the cleaning fluid flow path 20 and the dispensable fluid flow path 22 from one another. For example, if the dispensable fluid is for human consumption, such as milk, cleaning fluid in the cleaning fluid flow path 20 may contaminate the dispensable fluid such that it would need to be discarded before the fluid dispensing device can be used.

[0054] Thus, the dispensable fluid inlet 16, and optionally a portion of the dispensable fluid passage 28, may be configured to be isolatable from the cleaning fluid flow path 22 during a cleaning operation. In other embodiments, it may be desirable to additionally or alternatively isolate the cleaning fluid inlet 14, and optionally a portion of the cleaning fluid passage 26, from the dispensable fluid flow 22 during use.

[0055] Isolation of the cleaning fluid flow path 20 and the dispensable fluid flow path 22 may be achieved using one or more valves. Thus, as shown in FIG. 1, the connector 10 may include a valve 30 to prevent cleaning fluid from flowing upstream into the dispensable fluid passage 28 and / or the inlet 16.

[0056] The valve 30 may be located at or near the convergence 23 such that the length of the dispensable fluid flow passage 28 that is open to the cleaning fluid is minimized. The valve may define the junction between the first and second fluid flow paths, thus defining the convergence 23. The valve 30 may be a one-way valve (which may be referred to as a check valve). The one-way valve may be a so-called "duckbill valve" that is well known in the art.

[0057] In some embodiments, the valve 30 may be omitted or may be located external to the connector 10 , for example, in the conduit connecting to the dispensable fluid inlet 16 .

[0058] In embodiments where it is desirable to isolate the cleaning fluid flow passages 26 and / or the inlets 14 from the distributable fluid flow passages 22, the connector 10 may include a cleaning fluid flow valve operable to isolate the cleaning fluid flow passages 26 and / or the inlets 14 from the distributable fluid flow passages 22. Similar to valve 30, the cleaning fluid flow valve may be provided internal or external to the connector 10 and may comprise a one-way valve.

[0059] 1, the cleaning fluid flow path 10 includes a valve 32 upstream of the connector 10 in a conduit that supplies cleaning fluid to the connector 10. The valve 32 may be a passive valve, such as a one-way valve, or a selectively operable valve that is operable under the control of a controller (not shown) and in accordance with a cleaning operation.

[0060] Each of the inlets 14, 16 and outlets 18 may include features suitable for attachment to a corresponding conduit for the respective inflow and outflow of fluid to the connector 10. The attachment features may be for any suitable attachment known in the art. Such attachment features may include features for coupling or mating with compression connectors, push fit connectors, compression clips, bolts, flanges, and the like.

[0061] In some embodiments, the connector 10 may comprise a follower tube or wand that is insertable into a container for the dispensable fluid or connectable to a follower tube or wand. The dispensable fluid inlet connection may be characterized by incorporating a connector that is manually removably attached by an end user to provide fluid communication with a source of the dispensable fluid.

[0062] The connector 10 may float such that it is not rigidly connected to the dispensing apparatus. Rather, the connector 10 may be connected to the fluid dispensing apparatus via one or more conduits, such as flexible tubing that connects to the outlet 18 or the cleaning fluid inlet 14. In other embodiments, the connector may be fixedly attached to the fluid dispensing apparatus.

[0063] In some embodiments, the connector 10 is configured to include a connection to a dispensable fluid connector for connecting a source of fluid for dispensing. The dispensable fluid connector may be configured to be removably attachable by hand. The dispensable fluid connector may include an open ended tube for insertion into a dispensable fluid receptacle, or may be attached to a dispensable fluid receptacle via a suitable coupler.

[0064] The main body 12 is shown as having a single piece construction with multiple passageways extending therethrough. However, the main body 12 may include multiple pieces and may be fabricated using techniques and materials common in the art. The locations of the inlets 14, 16 and outlet 18 may vary in different embodiments.

[0065] Generally, throughout this disclosure, the use of the terms upstream and downstream are used to refer to the direction of fluid flow from an inlet to an outlet. Thus, each of the respective inlets 14 and 16 is upstream of the outlet 18.

[0066] Generally, throughout this disclosure, like features will have like reference numbers across the figures incremented by multiples of 100. Where such features are common to all embodiments, descriptions may be omitted for brevity and descriptions from elsewhere may be relied upon.

[0067] As mentioned above, the connector 10 may include a dispensable fluid inlet characterized by a conduit that is manually removably attachable to the connector 10. Figure 2 shows one embodiment of a connector 210 that includes a main body 212 having a cleaning fluid inlet 214, a dispensable fluid connector 236 that is removably attached to the main body 212 and includes a dispensable fluid inlet 216, and an outlet 218.

[0068] The cleaning fluid inlet 214 is configured to receive a flow of cleaning fluid in use. The dispensable fluid inlet 216 is configured to receive fluid for dispensing from a fluid dispensing device (not shown). Similar to the embodiment described in Figure 1, the outlet 218 is in fluid communication with the cleaning fluid inlet 214 to provide a cleaning fluid flow path 220 and in fluid communication with the dispensable fluid inlet 216 to provide a distribution fluid flow path 222.

[0069] The first fluid flow path 220 and the second fluid flow path 222 meet at a converging portion 223 to provide an outlet passage 224 that extends to the outlet 218. The portions of the cleaning fluid path 220 and the distributable fluid path 222 upstream of the converging portion 223 may be referred to as a cleaning fluid passage 226 and a distributable fluid passage 228. The converging portion 223 is shown as being within the distributable fluid connector 236, in contrast to the embodiment described in connection with FIG. 1 in which the converging portion 223 was provided within the main body 12.

[0070] Similar to the embodiment described in connection with Figure 1, the connector 210 may include one or more valves for isolating one or more sections of the irrigation fluid path and the distributable fluid path from others of the irrigation fluid path and the distributable fluid path. The valves may be internal or external and may be one-way valves. Figure 2 shows a single one-way valve 230 by way of example, but this is not limiting and may include other valves as described herein.

[0071] The dispensable fluid connector 236 may be removably attached to the main body 212 of the connector 210 by a suitable fitting. For example, attachment may be provided by, for example, threads, a push fit, an interference fit, or a bayonet fitting.

[0072] As shown in the embodiment of Figure 2, the cleaning fluid flow path 220 may extend into the distributable fluid connector 236 rather than being contained within the main body 212 as shown in the embodiment of Figure 1. The distributable fluid connector 236 thus receives the cleaning fluid during the cleaning operation. To enable this, the focusing portion 223 and the valve 230 may be located within the distributable fluid connector 236. The cleaning fluid flow passage 226 and / or the outlet passage 224 may extend through the main body 212 such that the cleaning fluid inlet 214 and outlet 218 are always attached to the connector 210 regardless of whether the distributable fluid connector 236 is connected or not.

[0073] As discussed above, the dispensable fluid connector 236 may be removably attached to the main body 212 of the connector 210 for manual attachment or removal. Thus, the exterior surface of the dispensable fluid connector may include a gripping portion that comprises one or more gripping features that allow a user to more easily grip the dispensable fluid connector 236 by hand. The gripping portion may comprise, for example, a surface texture or ridges or grooves or one or more protrusions or ribs.

[0074] The main body 212 of the connector 210 may be fixedly attached to the fluid distribution apparatus, either directly or via any structure forming part of or associated with the fluid distribution apparatus. Alternatively, the main body may be floating such that it is not fixedly attached to the fluid distribution apparatus. For example, the main body 210 may be connected to the fluid distribution apparatus by a flexible pipe or tube that extends between the connector and the apparatus.

[0075] It will be appreciated that in the embodiment of FIG. 2, the connection of the main body 212 to the dispensable fluid connector 236 may align and sealably connect corresponding portions of the cleaning fluid passageway 226 and the outlet passageway 224 .

[0076] In some embodiments, the connector may include a cleaning fluid flow path that includes multiple separate passages between one or more cleaning fluid inlets and a fluid outlet. The cleaning fluid flow path may include a branch where a first cleaning fluid flow path extends through the main body to the outlet and a second cleaning fluid flow path extends through the dispensable fluid connector to the outlet.

[0077] The separate first and second fluid cleaning fluid flow paths may be configured to be used separately, in parallel, or in combination with one another. Thus, in some embodiments, cleaning fluid may flow through the connector and the main body of the dispensable fluid connector. In other embodiments, the first and second cleaning fluid flow paths may be independently operable such that only one of these cleaning fluid paths is used at any one time. Thus, portions of the first and second cleaning fluid flow paths may be isolated from either or both of the first fluid inlet and outlet when not in use.

[0078] 3a-3c show one embodiment of a connector 310 according to the present disclosure. The connector 310 may comprise a main body 312, an outlet 318, a cleaning fluid inlet 314, and a dispensable fluid inlet 316. Cleaning fluid 320 and dispensable fluid 322 flow paths are provided between the respective cleaning fluid inlet 314 and outlet 312, and between the dispensable fluid inlet 316 and outlet 312. FIG. 3a shows the connector 310 without a distribution fluid connector 336 attached. FIG. 3b shows the connector 310 with a distribution fluid connector 336 attached. FIG. 3c shows an exterior perspective exploded view of the connector 310, with the main body 312 and the dispensable fluid connector 336 displaced along a central axis 338 of the connector 310 in a pre-attached configuration.

[0079] The cleaning fluid flow paths include a first cleaning fluid flow path 320, shown in Figure 3a, and a second cleaning fluid flow path 320', shown in Figure 3b. The first cleaning fluid flow path 320 and the second cleaning fluid flow path 320' are separately selectably configured such that cleaning fluid sealably passes through the main body 312 along the first cleaning fluid flow path 320 only when the dispensable fluid connector 336 is not attached, and along the second cleaning fluid flow path 320' when the dispensable fluid connector 336 is attached.

[0080] Thus, when the dispensable fluid connector 336 is attached, the first fluid pathway 320′ extends through the main body 312, the dispensable fluid connector 336, and back through the main body 312 to the outlet 318. When the dispensable fluid connector 336 is not attached, the first fluid pathway 320 may extend directly through the main body 312 from the cleaning fluid inlet 314 to the outlet 318, or may be entirely within the main body 312.

[0081] Additionally, when the dispensable fluid connector 336 is attached, the second fluid pathway 322' extends through the dispensable fluid connector 336 into the main body 312 to the outlet 318. When the dispensable fluid connector 236 is not attached, the first fluid flow path 320 may extend only through the main body 312.

[0082] It will be appreciated that the dispensable fluid inlet 316 described herein may, in use, only act as a fluid inlet when the dispensable fluid connector 336 is attached. When the dispensable fluid connector 336 is not attached, the main body may comprise a dispensable fluid inlet in the form of an opening or valve inlet that, in use, provides part of the dispensable fluid flow path 322.

[0083] The connector 310 may be configurable to select between the first cleaning fluid flow path 320 and the second cleaning fluid flow path 320'. Thus, the connector 310 may be adapted to open or close either or both of the first cleaning fluid flow path 320 and the second cleaning fluid flow path 320'.

[0084] 3a-3c, the main body 312 comprises a valve arrangement operable to open and close the first and second cleaning fluid flow paths 320, 320' as required. The valves may comprise one or more individually operable valve units provided in each of the flow paths or may be achieved by moving parts of the connector 310 relative to one another to provide selective alignment between the passages corresponding to the first and second cleaning fluid flow paths 320, 320'.

[0085] In some embodiments, switching between the first cleaning fluid flow path 320 and the second cleaning fluid flow path 320' may be provided by relative rotation of different portions of the main body 312. Thus, as shown in Figures 3a and 3b, the main body 312 may comprise a first body portion 312a and a second body portion 312b arranged to rotate relative to one another about a central axis 338 (shown in Figure 3c) of the main body 312. In use, either the first body portion 312a or the second body portion 312b may be supported in a stationary relationship relative to the fluid dispensing apparatus, while the other of the first body portion 312a or the second body portion 312b is rotated.

[0086] Relative rotation of the first body portion 312a and the second body portion 312b can transform the main body 312 from a first configuration in which the first cleaning fluid flow path 320 is open and the second cleaning fluid flow path 320' is closed to a second configuration in which the second cleaning fluid flow path 320' is open and the first cleaning fluid path 320 is closed.

[0087] The first configuration may be provided by the first body portion 312a having a first angular alignment relative to the second body portion 312b, and the second configuration may be provided by the first body portion 312a having a second angular alignment with the second body portion 312b that is different from the first angular alignment.

[0088] The amount of rotation required to move between the first and second configurations can be any amount desired to realign the various passageways, in some embodiments the rotation can be 180 degrees or less, preferably 90 degrees or less, and more preferably 45 degrees or less.

[0089] As shown in Figures 3a and 3b, the first body portion 312a can include a first inlet 316 and a branch portion 340 providing a junction between the first cleaning fluid flow path 320 and the second cleaning fluid flow path 320'.

[0090] Each portion of the first and second cleaning fluid flow paths 320, 320' may include passages 342, 344 that align with corresponding first and second cleaning fluid passages 342', 344' in the second body portion 312b. The respective cleaning fluid passages 342, 342' and 344, 344' are angularly displaced about the central axis 338 such that when the main body 312 is in a first configuration (FIG. 3a), the first cleaning fluid passage 342 in the first body portion 312a is aligned with the first cleaning fluid passage 342' in the second body portion 312b, and in a second configuration (FIG. 3b), the second cleaning fluid passage 344 in the first body portion 312a is angularly aligned with the second cleaning fluid passage 344' in the second body portion 312b of the second body portion 312.

[0091] The second body portion passages 342' and 344' extend into the outlet passage 324 of the main body 312 either directly in the case of the first cleaning fluid flow path 320, or via a dispensable fluid connector 336 in the case of the second cleaning fluid flow path 320'.

[0092] In the embodiment shown, the second body portion 312b comprises a central column 346 in which the outlet passage 324 is housed and a radially extending flange 348. The column 346 comprises a first end providing the outlet 318 and a connection portion for mating with a conduit configured to receive the fluid output from the connector 310. A second opposing end of the column 346 may comprise a flange 348 and may receive or be received within the dispensable fluid connector 336. Mating of the dispensable fluid connector 336 with the main body 312 may define a chamber in fluid communication with the passage 342'.

[0093] The first body portion 312a may include an annular collar having a central bore in which the column is rotatably received. Thus, the first body portion 312a and the second body portion 312b are coaxially nested on the central axis 338.

[0094] The first and second cleaning fluid flow paths 320, 320' are initially through a common passage 350 upstream of the bifurcation 340. This is shown as extending axially from the upper surface of the first body portion 312a, but may be provided by tangential, radial, or axially extending passages. The first cleaning fluid flow path 320 may comprise a passage 344 having a radial component (shown as exclusively radial in FIG. 3a) corresponding to a radially extending passage 344' in a column 346 in the second body portion 312b.

[0095] The passage 342 of the second fluid flow passage 320′ provided in the first body portion 312a may extend axially to a radially extending flange 348 of the second body portion 312b. As shown in FIG. 3b, the second body portion 312b includes a corresponding axially extending passage 342′ that extends through the flange 348 into a chamber defined by the mating of the dispensable fluid connector 336.

[0096] As shown in Figure 3a, there may be multiple wash fluid inlets 314, 314' distributed around the central axis of the connector 310. Although two are shown in the cross section of Figure 3a, this is not a limitation and there may be more or fewer first inlets. The multiple first inlets 314, 314' may be evenly distributed around the central axis 338.

[0097] It will be appreciated that the fit between the first and second body portions 312a, 312b may be sufficiently tight to allow the respective passages 342, 342', 344, 244' of the first and second cleaning fluid flow paths 320, 320' to be sealably connected in their respective configurations while still allowing relative rotation of the first and second body portions 312a, 312b. To facilitate this, the connector 310 may include one or more sealing elements or gaskets.

[0098] A seal or gasket may be provided within and surround the recesses 360, 360' as shown adjacent the terminal ends of the flow passages 342, 342', 344, 344'. The recesses 360, 360' may receive an O-ring or other suitable sealing element that is exposed against the opposing walls of the respective main body portions 312a, 312b to provide a seal.

[0099] The first and second body portions 312a, 312b may be attached to one another to prevent separation once assembled. In the embodiment of Fig. 3a, an axial retention feature is provided by a further recess 362 provided in the outer surface of the column 348 of the second main body portion 312b. The recess 362' is axially adjacent, e.g., flush with, an upper surface of the first body portion 312a to receive a retention device, such as a circlip, that axially retains the first body portion 312a and maintains the rotatable axial alignment of the first and second body portions 312a and 312b.

[0100] 3a and 3b, the connector 310 may include one or more valves to prevent backflow of fluid upstream. The valves may be any suitable valves known in the art or described herein. In the embodiment shown, the valves 330, 330' are duckbill valves located at each point of convergence 323, 323' of the wash fluid flow paths 320, 320' and the dispensable fluid inlets 316, 316' in the dispensable fluid connector 336 and the second body portion 312b, respectively.

[0101] As previously mentioned, the dispensable fluid connector 336 and the main body 312 may be coupled together using any suitable fittings and / or interlocks. In the embodiment shown in Figures 3a-3c, a bayonet fitting is used. The bayonet fitting may include an interlock that allows the main body 312 and the dispensable fluid connector 336 to be axially coupled along the central axis 338 of the connector 310 before being rotated about the central axis 338 to provide an interlock that prevents the dispensable fluid connector 336 from being axially withdrawn.

[0102] The bayonet fitting may include any combination of projections and tracks to enable the described engagement and interlock. In the embodiment of FIG. 3c, the dispensable fluid connector 336 includes a plurality of lugs 362 extending radially inward from an inner wall of the dispensable fluid connector 336 and received by corresponding tracks 364, 364', e.g., grooves, located on the exterior surface of the main body 312. Although the embodiment of FIG. 3c shows four equally spaced projections 362 on the upper edge of the dispensable fluid connector 336, in other embodiments, any of the number, location, and relative spacing of the projections 362 may vary. Additionally, in other embodiments, the projections 362 may be provided on the main body 312 with tracks 364, 364' provided on the dispensable fluid connector 336.

[0103] In embodiments incorporating a two-piece main body 312 in which a first body portion 312a and a second body portion 312b rotate relative to one another, such as those shown in Figures 3a-3c, the distribution fluid connector 336 and the main body 312 may be configured such that connection of the distribution fluid connector 336 causes relative rotation and shift between the first and second configurations.

[0104] For example, in the case of a bayonet fitting, rotation of the dispensable fluid connector 336 may cause either the first body portion 312a or the second body portion 312b to rotate relative to the other of the first body portion 312a or the second body portion 312b. In the embodiment of Figures 3a-3c, relative rotation is accomplished by the dispensable fluid connector 336 being rotatably engaged with the first body portion 312a following initial axial insertion.

[0105] To enable this in the illustrated embodiment, the first and second body portions 312a, 312b may provide respective portions of elongate channels 364, 364′ that are sized to receive the radially extending protrusions 362 of the dispensable fluid connector 336. The elongate channel comprises a first portion 364 in the first body portion 312a distal to the dispensable fluid connector 336 and a second portion 364′ in the second body portion 312b proximal to the dispensable fluid connector 336.

[0106] The first channel portion 364 and the second channel portion 364' are aligned when the main body 312 is in the first configuration, such that the protrusion 362 is received by the open end of the second channel portion 364' and can advance axially along the channel to be received within the first channel portion 364 when the dispensable fluid connector 336 is fully axially biased onto the main body 312.

[0107] When the main body 312 and the dispensable fluid connector 336 are axially mated, the radially extending projection 362 is fully received within the first channel portion 364 such that the dispensable fluid connector 336 can be rotated with the first body portion 312a without fouling or being obstructed by the second body portion 312b. Once rotated, the first channel portion 364 and the second channel portion 364' are angularly misaligned such that the radial projection 362 is trapped within the first channel portion 364 and axial withdrawal is prevented by the opposing walls of the flange 348 of the second body portion 312b.

[0108] Thus, the connector 310 can include a second body portion 312b that can include an exterior surface having a notch or groove that provides a through passage for the bayonet fitting protrusion 362. The first body portion 312a can include an exterior surface having a notch or groove with a closed end cavity that can fully receive and retain the protrusion 362 when the interlock is axially engaged and the main body 312 is rotated into the second configuration.

[0109] It will be appreciated that in some embodiments the main bayonet fitting does not require rotation of different portions of the main body 312, but this can be accomplished by providing a channel or track in the main body 312 that provides the necessary interlock to prevent axial pull-out when engaged. Such a track can be L- or J-shaped, having an axial portion and a rotational portion, as is well known in bayonet fittings.

[0110] 3a-3c, the main body 312 may be axially and concentrically received within the dispensable fluid connector 336. The dispensable fluid connector 336 may thus comprise a cup-like structure including a radially extending axial end wall and an axially extending peripheral wall that in combination define an interior volume capable of receiving the main body 312. If first and second body portions 312a, 312b are provided, the first and second body portions may have corresponding exterior diameters to provide a continuous outer wall having a uniform diameter.

[0111] The axial extent of travel of the dispensable fluid connector 336 may be determined by one or more axial stops. In the embodiment shown in Figures 3a-3c, the axial stops may be provided by protrusions received in the axial channels and / or by corresponding axially facing shoulders 366 on the main body 312 and the dispensable fluid connector 336.

[0112] As shown, the outlet 318 or any of the inlets 314, 316 may comprise or form part of a connector or coupler that is connected or coupled to a fluid conduit, such as a pipe, tube, or passageway. In some embodiments, the dispensable fluid connector 336 may be attached to or comprise an integrally formed conduit for insertion into or connection with a dispensable fluid receptacle, as described herein.

[0113] Figures 4a-4c, 5a, 5b, 6a and 6b show an alternative embodiment of connector 410. Many aspects of connector 410 are similar to those described above and a description of the features will generally not be repeated.

[0114] Figures 4a-4c show the main steps for mounting the dispensable fluid connector 436 to the main body 412 of the connector 410. Planes AA and BB, indicated by dashed lines, correspond to the views shown in Figures 5a and 6a, and 5b and 6b, respectively. More specifically, Figure 5a corresponds to section AA in Figure 4a, Figure 5b corresponds to section BB in Figure 4a, Figure 6a corresponds to section AA in Figure 4c, and Figure 6b corresponds to section BB in Figure 4c. These planes are angularly offset by 45 degrees, which corresponds to the relative rotation between the first and second configurations, nominally chosen in this embodiment, although other rotation angles are possible.

[0115] The connector 410 comprises a main body 412 having a first body portion 412a and a second body portion 412b, and a dispensable fluid connector 436 removably attachable to the main body 412. A cleaning fluid inlet 414 is provided on a side wall of the main body 412, specifically the first body portion 412a, a dispensable fluid inlet 416 is provided by the dispensable fluid connector 436, and an outlet 418 is provided on an axial end wall of the main body 412, specifically the second body portion 412b. The dispensable fluid inlet 416 and outlet 418 are coaxially aligned with a central axis 438 of the connector 410 and have a flow passage extending therebetween.

[0116] As shown, the exterior surface of the dispensable fluid connector 336 may include a plurality of longitudinally extending grooves 470 and / or ridges 470' that provide grippers for a user to grip the connector 410 to aid in installation and rotation of the dispensable fluid connector 436. Similar gripper features may also be included in the main body 412. As shown, the second body portion may include an exterior skirt that extends circumferentially around the first body portion. The skirt may include a window through which the cleaning fluid inlet projects and rotates. Gripper features may be provided on the skirt or the exterior surface of the first body portion where appropriate, for example, if a skirt is not used or is not present.

[0117] The outer wall of the main body 412 is provided with fixing structures 472. Although only portions of the structures are shown in Figures 4a-4c, it will be appreciated that these may be used to fixedly attach the main body 412 of the connector to a fluid dispensing device.

[0118] The dispensable fluid connector 436 includes a peripheral sidewall 474 and an axial end wall 476 that define a cavity therebetween capable of receiving a portion of the main body 412. The inner surface of the peripheral sidewall includes a plurality of radially extending projections 462 that are received within corresponding channels on the outer wall 464 of the main body 412. Although Figures 5a-6b show an arrangement having five evenly distributed projections 462, the connector 410 may include fewer or more than five projections.

[0119] The first body portion 412a includes an annular collar having a central bore in which a central column 446 of the second body portion 412b is rotatably received such that the first body portion 412a can be moved between a first configuration and a second configuration. The second body portion 412b includes a central column 446 that lies along and defines a central axis 438 of the connector 410. Each end of the central column 446 can include a radially extending flange between which the first body portion 412a is positioned.

[0120] The dispensable fluid connector end of the column may include an integrally formed flange 442 in which there is at least one fluid passageway 448' for providing fluid communication between the first body portion 412a and a cavity defined by the dispensable fluid connector 436 in fluid communication with the outlet 418. The distal end of the central column 446 may include a radial flange 448' that is attached to and axially retained by the central column 446 when the first body portion 412a is mounted thereon. The aforementioned skirt is added from the periphery of the radial flange 448' to surround the first body portion.

[0121] The first body portion 412a includes an annular chamber 478 sealed to the central column 446 by axial sealing elements on either side thereof as previously described herein. The annular chamber 478 is in fluid communication with the wash fluid inlet 414 via a first passageway 444, with the outlet passageway 424 via a second passageway 450', and with the dispensable fluid connector 436 via a third passageway 442'. Connection between the annular chamber 478 and the second and third passageways 444', 442' is provided by a common passageway 450' within the first body portion.

[0122] 4a-6b, the connector 410 may include a first body portion 412a and a second body portion 412b configured to rotate relative to one another between a first configuration and a second configuration. The first and second main body portions 412a, 412b may include a first cleaning fluid flow path 420 between a cleaning fluid inlet 414 and an outlet 418 to an outlet passage 424.

[0123] The first cleaning fluid flow path may include first body portion passages 450, 478, 450' and second body portion passages 444'. The first and second main body portions 412a, 412b may include a second cleaning fluid flow path 420' between the cleaning fluid inlet 414 and the outlet 418 to the outlet passage 424. The second cleaning fluid flow path 420' may include first body portion passages 450, 478, 450' and second body portion passages 442'.

[0124] The first passageway 450 may extend radially through the annular chamber 478 and the first body portion 412a between the cleaning fluid inlet 414. The second passageway 450' may extend axially and radially from a bottom surface of the annular chamber 478. The passageway 444' may extend axially downstream and radially inward toward the central axis 448 to the outlet passageway 424 and to have the same axially inclined trajectory. The outlet trajectories for the first and second cleaning fluid flow paths, if employed, may abut the outer surfaces of the respective valves 430, 430'.

[0125] The passageway 442 ′ in the second body portion 412 b extends radially and axially upstream toward the dispensable fluid inlet 416 and valve 430 ′ in the dispensable fluid connector 436 .

[0126] Passages 442' and 444' are circumferentially displaced about second body portion 412b. Thus, as shown in Figures 5a and 5b, when the connector is in the first configuration, a cleaning fluid flow path 420 is provided through main body 412 and outlet 418 and the second cleaning fluid flow path is closed, and when in the second configuration, as seen in Figure 6a, the second cleaning fluid flow path 420' is diverted through dispensable fluid connector 436 to outlet 418. Figure 6b shows the dispensable fluid flow path 422 when connector 410 is in the second configuration and is not undergoing a cleaning operation.

[0127] To attach the dispensable fluid connector 436 to the main body 412, the dispensable fluid connector 436 is axially engaged with the main body 412 and moved from the position shown in Figures 4a, 5a, and 5b to Figure 4b. Once axially engaged, the dispensable fluid connector 436 is rotated to engage the bayonet interlock and provide the connector 410 in a second configuration. This can be seen in Figures 4c, 6a, and 6b.

[0128] 4b and 4c, rotation of the first body portion 412a with rotation of the dispensable fluid connector 436 causes an associated rotation of the cleaning fluid inlet 414. The angular displacement of the first body portion 412a and the second body portion 412b can be any suitable amount. In the embodiment shown, the angular displacement is 45 degrees, although this is not a limitation and smaller or larger degrees of rotation may be possible.

[0129] The above-described embodiments provide a connector that can be cleaned whether or not a dispensable fluid connector is attached. When a dispensable fluid connector is not attached, the connector is configured to have a cleaning fluid flow path from a cleaning fluid inlet to an outlet that passes only through the main body of the connector. When a dispensable fluid connector is connected, the cleaning fluid flow path is diverted through the dispensable fluid connector, allowing the full extent of the dispensable fluid flow path to be cleaned whether or not a source of dispensable fluid is connected and without further user interaction. Thus, the cleaning process can be made more automated.

[0130] 7 shows a fluid dispensing apparatus in the form of a coffee dispensing machine 700. The coffee dispensing machine 700 comprises a dispensing nozzle 701, a water heater 702, a coffee extraction module 703, a coffee hopper 704, a milk module 705 and a cleaning agent storage section 706.

[0131] The coffee brewing module 703 is configured to receive hot water from the water heater 702, receive coffee from the coffee hopper 704, and brew the coffee from the dispensing nozzle for delivery into a cup 707. The milk module 705 is configured to receive milk from a receptacle 708 via a connector 10, which may be any of the connectors 10, 210, 310, 410, as described herein, and deliver it to the dispensing nozzle 701.

[0132] The source of milk may comprise any suitable receptacle 708 connectable to the machine 700 via the connector 10. The connection may be via a conduit in the form of a tube or pipe 709. The conduit may be an open ended pipe or a so called "wand" that is inserted into the milk for extraction. The conduit may comprise attachment features 709a to attach the conduit to the receptacle 707 and prevent accidental removal or displacement.

[0133] The dispensable fluid connector 36 may be any of those described herein and may provide a dispensable fluid inlet in fluid communication with the milk via a conduit 709. The dispensable fluid connector 36 may include the conduit 709 as an integral part thereof, or may include attachment features to which the conduit may be attached. For example, the dispensable fluid connector 36 may include a nipple into which the conduit may be sealably received via an interference fit. Other attachments are possible.

[0134] The main body 12 may be any of the main bodies described herein and may include a cleaning fluid inlet for receiving cleaning fluid from a conduit 714 and an outlet connected to a dispensing nozzle via a conduit 718 passing through the milk module 705. The milk module 705 may be, for example, a milk former known in the art.

[0135] The dispensing machine 700 includes a cleaning system that can circulate cleaning fluid through the machine and connectors 10 to clean the various components. The cleaning system can include one or more cleaning fluid sources and cleaning fluid conduits.

[0136] The cleaning fluid may be any suitable cleaning solution including water, steam, or a cleaning agent. Accordingly, the dispensing machine 700 may include a cleaning agent dispenser 706 that dispenses the cleaning agent or fluid as needed.

[0137] The cleaning system may comprise a fluid circuit including at least one cleaning fluid conduit 714 for delivering cleaning fluid to the cleaning fluid inlet of the connector 10. In some embodiments, the cleaning system is configured to incorporate cleaning of other elements of the dispensing apparatus, such as, for example, the coffee extractor 703 and the nozzle 701. Thus, the cleaning fluid system may comprise a cleaning fluid conduit to each of the components of the apparatus to be cleaned. The cleaning fluid conduit may utilize other conduits within the apparatus or may be a dedicated cleaning fluid conduit.

[0138] The cleaning system and cleaning fluid conduits may comprise a closed circuit through which the cleaning agent may be circulated continuously, or may be an open circuit in which the cleaning agent is dispensed to a drain 711. The drain may be provided by or at the nozzle 711 in some embodiments.

[0139] It will be understood that the dispensing device 700 may include other conduits, valves and pumps as known in the art to enable coffee and milk dispensing and cleaning functions. For example, the milk module 705 may comprise a pump to pump milk from the milk receptacle 708, and the junction provided in the piping between the discharge conduit and the milk dispensing conduit attached to the nozzle 701 may comprise a valve to enable selection between the two conduits created. It will also be understood that each of the modules may be connectable to a drain pipe 711.

[0140] The outlet from the connector 10 may be directly connectable to a drain 711 for purposes of draining used cleaning fluid during a cleaning operation before being reconnected to the outlet nozzle 701 following the cleaning operation. Thus, the outlet and / or the conduit attached thereto may be reconfigurable between a cleaning configuration and a dispensing configuration. This may be achieved using a controller and conventional valves or the like. As discussed in relation to Figure 1, the machine may include one or more valves operable to isolate the cleaning fluid, such as valve 32 shown in Figure 1.

[0141] The coffee dispensing machine 700 may include a controller 713. The controller 713 may be a conventional controller with a user interface. The user interface may be configured to receive instructions from a user and / or provide a display to provide information to the user. The user interface may include, for example, an output display 715 and an input device 717, such as a touch screen input device or one or more buttons, to enable a user to select options or operate the machine.

[0142] The controller 713 may be configured to allow a user to, for example, select a beverage type to dispense or select a cleaning operation, and / or may be configured to provide, for example, the level of inventory or the operating status of the machine.

[0143] The controller 713 may include a timer and / or scheduler that allows the cleaning operation to be performed at a specified time and / or according to a predefined schedule. Thus, the controller 713 may be configured to perform the cleaning operation automatically and without user interaction. Since the connector 10 is connectable to the cleaning circuit whether or not a source of milk is attached to the connector, the user does not need to perform any specific action regarding the milk supply prior to the cleaning operation, and thus cleaning can be scheduled for a preferred time of day or week.

[0144] In use, a user may manually attach a source of dispensable fluid to the dispensable fluid device prior to dispensing a beverage. Following connection of the dispensable fluid, the connector may be subjected to a cleaning operation. In an alternative embodiment, the dispensable fluid may be disconnected prior to the cleaning operation.

[0145] An advantage of the connector of the present disclosure is that it can be used in a cleaning cycle whether or not a source of dispensable fluid is attached. Thus, in use, a user may connect a source of dispensable fluid, such as milk, to the device using the connector. Prior to disconnecting the source of dispensable fluid, the device may be configured to undergo a cleaning operation. In another example, the source of dispensable fluid may be disconnected from the device. The device may then be configured to receive a cleaning device without reconfiguring the connector or the device associated with the connector.

[0146] The dispensable fluid connector 36 may be a disposable component such that it does not require cleaning and may be replaced at regular intervals and according to a predetermined schedule. For example, the dispensable fluid connector 36 may be replaced daily or when the dispensable fluid is replenished. In other embodiments, the dispensable fluid connector may be cleaned as part of a separate cleaning operation.

[0147] In one embodiment, a method of (autonomous) cleaning may include closing the exit dock and isolating the source of dispensable fluid so that the device can enter a cleaning mode. Preferably, all subsystems may then be flushed to remove any dispensable fluid residue from the dispensable fluid circuit. Cleaning fluid may then be dispensed into the dispensable fluid circuit. This may come from a reservoir containing the cleaning fluid.

[0148] The apparatus can heat the cleaning fluid to a temperature of at least 50° C., preferably at least 60° C., preferably at least 70° C., and most preferably about 75° C. The apparatus can circulate the cleaning fluid through all subsystems at the elevated temperature for a selected period of time, such as at least 2 minutes, preferably at least 3 minutes, preferably at least 4 minutes, and more preferably at least 5 minutes.

[0149] The cleaning fluid can then be drained from the dispensable fluid circuit. All subsystems are then preferably flushed to remove any residual cleaning fluid. The exit dock can then be opened to return the device to the dispensing mode.

[0150] The device may be used in an intermediate rinse mode in which the outlet dock may be closed to isolate the source of dispensable fluid, so that the device can enter the intermediate rinse mode. Preferably, all subsystems may then be flushed to remove any dispensable fluid residue from the dispensable fluid circuit. After this, the outlet dock may be opened to return the device to the dispense mode.

[0151] Providing a dispensable fluid connector that is disposable allows for the cleaning operation to be further automated since no user interaction is required to modify or reconfigure the connector for the cleaning process. If the dispensable fluid connector is disposable, it may be manufactured from an environmentally friendly material. For example, the disposable dispensable fluid connector may be manufactured from a biodegradable material. The biodegradable material may be polylactic acid, PLA, as known in the art.

[0152] 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. 1. A connector for manually connecting a dispensable fluid to a fluid dispensing device, comprising: a cleaning fluid inlet; a dispensable fluid inlet; an exit; the wash fluid inlet is in fluid communication with the outlet via a wash fluid flow path, and the dispensable fluid inlet is in fluid communication with the outlet via a dispensable fluid flow path; connector.

2. a main body including the cleaning fluid inlet and the outlet; a dispensable fluid connector removably attachable to the main body and including the dispensable fluid inlet. The connector according to claim 1 .

3. the outlet is in fluid communication with the cleaning fluid inlet to provide a cleaning fluid flow path through the main body and / or the dispensable fluid connector. The connector according to claim 2 .

4. the cleaning fluid flow paths include a first cleaning fluid flow path through the main body and a second cleaning fluid flow path through the dispensable fluid connector; The connector according to claim 3 .

5. the connector is configurable to select either the first cleaning fluid flow path or the second cleaning fluid flow path; The connector according to claim 4.

6. the cleaning fluid flow path and the distributable fluid flow path are connected at a converging portion upstream of the outlet. The connector according to claim 1 .

7. further comprising a one-way valve in the dispensable fluid flow path and / or the cleaning fluid flow path. The connector according to claim 1 .

8. the main body comprises a first body portion and a second body portion configured to rotate relative to one another between a first configuration in which the cleaning fluid inlet is connected to the outlet via the first cleaning fluid flow path and a second configuration in which the cleaning fluid inlet is connected to the outlet via the second cleaning fluid flow path. The connector according to claim 5.

9. the dispensable fluid connector is rotatable relative to the main body, and rotation of the dispensable fluid connector relatively rotates the first body portion and the second body portion between a first position and a second position to provide the first configuration and the second configuration. The connector according to claim 8.

10. the dispensable fluid connector and main body are connected by interengagement of a protrusion and a channel to provide the bayonet fitting, the main body comprising the channel and the dispensable fluid connector comprising the protrusion received by the channel; The connector of claim 9.

11. the distribution fluid connector comprises a tube for insertion into a container or the distribution fluid connector is connectable to a container; The connector according to claim 1 .

12. the dispensable fluid connector having an exterior surface, the exterior surface having gripping features; The connector according to claim 1 .

13. the one-way valve is a duckbill valve; The connector according to claim 7.

14. A connector comprising: the connector of claim 1; Fluid distribution device.

15. the device is a coffee dispenser and the dispensable fluid is milk; 15. The apparatus of claim 14.

16. the connector forming part of a cleaning fluid circuit; 16. The apparatus of claim 15.

17. the cleaning fluid circuit comprising one or more of a cleaning agent dispenser, a water heater, a water heater, a drain, and a fluid dispensing nozzle for dispensing fluid from the device; 17. The apparatus of claim 16.

18. the connector is fixedly attached to the device; 16. The apparatus of claim 15.

19. the dispensable fluid is milk, and the device further comprises a source of milk attached to the connector; 16. The apparatus of claim 15.

20. the dispensable fluid connector is disposable and optionally made from a biodegradable material; The connector according to claim 2 .

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