BEVERAGE MIXING DEVICE, BEVERAGE PREPARATION DEVICE AND METHOD FOR PREPARING A BEVERAGE PRODUCT

Abstract

The present invention is directed to a beverage mixing device (2) comprising a mixing body (3) defining a mixing chamber (30), at least one or a plurality of fluid inlets (4, 5, 6) for supplying a fluid (L, W, A, S) into the mixing chamber (30), a discharge opening (7) to discharge a liquid (P) from the mixing chamber (30), a sealing element (8) being moveably provided between a closed position for closing the discharge opening (7) and an open position for releasing the discharge opening (7) to allow a liquid (P) in the mixing chamber (30) be discharged via the discharge opening (7), and an evacuation outlet (9) for evacuating the mixing chamber (30) by a fluid (G) be introduced into the mixing chamber (30) via the at least one or the plurality of fluid inlets (4, 5, 6) when the discharge opening (7) is closed by the sealing element (8). The present invention is further directed to a beverage preparation device (1) comprising the beverage mixing device (2), a liquid supply (20), at least one or a plurality of product supplies (40), a gas supply (50), and a drainage (60). Also, the present invention is directed to a method for preparing a beverage product using the beverage preparation device according to the invention.

Claims

1. Beverage mixing device comprising a mixing body defining a mixing chamber, at least one or a plurality of fluid inlets for supplying a fluid into the mixing chamber, a discharge opening to discharge a liquid from the mixing chamber, a sealing element being moveably provided between a closed position for closing the discharge opening and an open position for releasing the discharge opening to allow a liquid in the mixing chamber be discharged via the discharge opening, and an evacuation outlet for evacuating the mixing chamber by a fluid be introduced into the mixing chamber via the at least one or the plurality of fluid inlets when the discharge opening is closed by the sealing element.

2. Beverage mixing device according to claim 1, wherein, in the open position, the sealing element seals the evacuation outlet from the mixing chamber, wherein the sealing element is preferably configured such that it closes the evacuation outlet when being in the open position and releases the evacuation outlet when being in the closed position.

3. Beverage mixing device according to claim 1, wherein the evacuation outlet is provided at a vertically moveable pipe/tube section carrying the sealing element to be moveable between the open and closed position.

4. Beverage mixing device according to claim 1, wherein the discharge opening is positioned at a bottom of the mixing chamber to discharge a liquid from the mixing chamber preferably by gravity.

5. Beverage mixing device according to claim 1, wherein the evacuation outlet is positioned at a bottom of the mixing chamber, preferably at a lower end of the pipe/tube section.

6. Beverage mixing device according to claim 1, wherein the inlet or the plurality of inlets, respectively, open into the mixing chamber via an inlet opening being tangentially oriented to the mixing chamber so as to create a vortex inside the mixing chamber with a fluid supplied via the respective inlet opening into the mixing chamber, wherein the inlet opening is provided at a top of the mixing chamber, more preferred opposite to the discharge opening, and wherein the sum of the cross-sectional area of the fluid inlet(s) is larger than the sum of the cross-sectional area of the evacuation outlet.

7. Beverage mixing device according to claim 1, further comprising evacuation sections provided at the fluid inlet(s) and the discharge opening and the evacuation outlet and designed to receive trapped gas.

8. Beverage preparation device comprising a beverage mixing device comprising a mixing body defining a mixing chamber, at least one or a plurality of fluid inlets for supplying a fluid into the mixing chamber, a discharge opening to discharge a liquid from the mixing chamber, a sealing element being moveably provided between a closed position for closing the discharge opening and an open position for releasing the discharge opening to allow a liquid in the mixing chamber be discharged via the discharge opening, and an evacuation outlet for evacuating the mixing chamber by a fluid be introduced into the mixing chamber via the at least one or the plurality of fluid inlets when the discharge opening is closed by the sealing element, a liquid supply fluidly connected to the at least one or the plurality of fluid inlets for selectively delivering a liquid into the mixing chamber, at least one or a plurality of product supplies each fluidly connected to the at least one or the plurality of fluid inlets for selectively delivering a beverage ingredient into the mixing chamber, a gas supply fluidly connected to the at least one or the plurality of fluid inlets for selectively delivering a gas into the mixing chamber, a drainage fluidly connected to the evacuation outlet for draining the mixing chamber.

9. Beverage preparation device according to claim 8, wherein the liquid supply is further fluidly connected to at least part of the product supply or each product supply for selectively delivering the liquid via the at least part of the respective product supply into the mixing chamber.

10. Beverage preparation device according to claim 8, wherein the liquid supply comprises a water supply for providing water, wherein the liquid supply comprises a liquid storage and/or a liquid connection for connecting an external liquid source, and the liquid supply comprises a heater or a boiler for heating the liquid, like water, to be delivered.

11. Beverage preparation device according to claim 8, wherein the gas supply comprises an air supply for providing air, and the gas supply comprises a pump or a compressor for delivering gas, preferably hot air.

12. Method for preparing a beverage product, comprising the steps of: Providing a beverage preparation device comprising a mixing body defining a mixing chamber, at least one or a plurality of fluid inlets for supplying a fluid into the mixing chamber, a discharge opening to discharge a liquid from the mixing chamber, a sealing element being moveably provided between a closed position for closing the discharge opening and an open position for releasing the discharge opening to allow a liquid in the mixing chamber be discharged via the discharge opening, and an evacuation outlet for evacuating the mixing chamber by a fluid be introduced into the mixing chamber via the at least one or the plurality of fluid inlets when the discharge opening is closed by the sealing element, moving the sealing element into the closed position, sanitizing the mixing chamber by circulating a sanitizing fluid via the inlet or the plurality of inlets through the mixing chamber and via the evacuation outlet to the drainage, evacuating the mixing chamber by a gas being introduced via the inlet or plurality of inlets through the mixing chamber and via the evacuation outlet to the drainage, moving the sealing element into the open position for opening the discharge opening and preferably also for closing the evacuation outlet, delivering a liquid and/or beverage ingredients via the inlet or the plurality of inlets into the mixing chamber to prepare a beverage product, and dispensing the beverage product out of the discharge outlet.

13. Method according to claim 12, wherein the sanitizing fluid is hot water.

14. Method according to claim 12, wherein the sanitizing fluid and/or the gas and/or the liquid and/or the beverage ingredients are supplied into the mixing chamber via the inlet or the plurality of inlets, preferably the respective inlet opening(s), so as to create a vortex inside the mixing chamber.

15. Method according to claim 12, wherein, at least during the step of sanitizing the mixing chamber, any remaining gas in the mixing chamber is trapped in the evacuation sections provided at the fluid inlet(s) and discharge opening and evacuation outlet.

Description

4. BRIEF DESCRIPTION OF DRAWINGS

[0040] Further features, details and advantages of the present invention will now be described with reference to the drawings of the enclosed figures.

[0041] FIG. 1A shows a front view of a beverage preparation device according to a first embodiment of the present invention,

[0042] FIG. 1B shows a cross-sectional side view of the beverage preparation device along line M-M of FIG. 1A,

[0043] FIG. 2A shows a perspective view of the beverage mixing device according to an embodiment of the present invention,

[0044] FIG. 2B shows a functional top view of the beverage mixing device according to FIG. 2A,

[0045] FIG. 3 shows a cross-sectional side view of the beverage mixing device according to FIG. 2B along line G-G during a sanitization mode,

[0046] FIG. 4 shows a cross-sectional side view of the beverage mixing device according to FIG. 2B along line H-H during an evacuation mode,

[0047] FIG. 5 shows a cross-sectional side view of the beverage mixing device according to FIG. 2B along line G-G during a beverage preparation mode,

[0048] FIG. 6A shows a side view of a beverage mixing device according to a further embodiment of the present invention,

[0049] FIG. 6B shows a cross-sectional side view of the beverage mixing device according to FIG. 6A along line B-B during a sanitization mode, and

[0050] FIG. 6C shows a cross-sectional bottom view of the beverage mixing device according to FIG. 6A along line A-A during a sanitization mode.

5. DETAILED DESCRIPTION

[0051] FIG. 1 shows a beverage preparation device 1 according to the present invention. The beverage preparation device 1 comprises a beverage mixing device 2 which itself forms an individual part of the present invention and will be described in more detail with reference to FIGS. 2 to 6 in the following.

[0052] The beverage mixing device 2 comprises a mixing body 3 defining a mixing chamber 30. The mixing chamber 30 is designed to allow for different beverage ingredients A to be mixed before being dispensed as a beverage product P, e.g., in an end-user's recipient, like a mug, bottle or the like.

[0053] The beverage mixing device 1 further comprises at least one or a plurality (here 10) fluid inlets 4, 5, 6 for supplying a fluid into the mixing chamber 30. As will be described in the following, the fluid inlets 4, 5, 6, may be provided for different process functions.

[0054] Moreover, the beverage mixing device 1 comprises a discharge opening 7 preferably at a bottom B of the mixing chamber 30 (at least in its functional orientation) to discharge a liquid (i.e. a beverage product P) from the mixing chamber 30 preferably by gravity.

[0055] A sealing element 8 is movably provided—here moveable in or along vertical direction—between a closed position for closing the discharge opening 7 (see FIGS. 3, 4 and 6B) and an open position (see FIG. 5) for releasing the discharge opening 7 to allow for a liquid in the mixing chamber 30 to be discharged via the discharge opening 7.

[0056] Moreover, the beverage mixing device 1 further comprises an evacuation outlet 9 for evacuating the mixing chamber 30 by a fluid be introduced into the mixing chamber 30 via the at least one or plurality of fluid inlets 4, 5, 6 when the discharge opening 7 is closed by the sealing element 8; i.e. the letter being in the closed position.

[0057] As can be clearly seen in FIG. 5, the sealing element 8 seals the evacuation outlet 9 from the mixing chamber 30 when being in the open position. This is here obtained by the sealing element 8 be positioned below the evacuation outlet 9 and by the evacuation outlet 9 be moved upwards along with the sealing element 8 into a channel section 31 laterally hiding the evacuation outlet 9, which in turn is closed towards the mixing chamber 30 by the sealing element 8 sitting in the channel section 31 between the evacuation outlet 9 and the mixing chamber 30. The sealing element 8 is thus preferably configured such that it closes the evacuation outlet 9 when being in the open position (see FIG. 5) and releases the evacuation outlet 9 when being in the closed position (see FIGS. 3, 4 and 6B).

[0058] The evacuation outlet 9 can be provided at a preferably vertically movable pipe or tube section 90 which is here preferably movably arranged within the channel section 31 provided in the mixing body 3. The pipe/tube section 90 preferably comprises a sealing element 91 (here an O-ring) being provided between an outer surface of the pipe/tube section 90 and an inner surface of the channel section 31 to allow for sealing the mixing chamber 30 and evacuation outlet 9 from an outside. To move the pipe/tube section 90 here vertically, there can be provided an actuator 10 like an electric motor. The actuator 10 can also be another type of actuator, like a pneumatic, hydraulic, mechanic and/or electric actuator.

[0059] As can be clearly seen in FIGS. 3 to 6, the movable pipe/tube section preferably carries the sealing element 8, which is thus easily moveable between the open and closed position along with the corresponding pipe/tube section 90.

[0060] As can be clearly seen in FIGS. 3 to 6, the evacuation outlet 9 is preferably positioned at a bottom B of the mixing chamber 30 (see FIGS. 3, 4 and 6B; i.e. at least in the functional or operational orientation) and preferably at a lower end 92 of the pipe/tube section 90. As can be seen in FIGS. 3, 4 and 6B, the evacuation outlet 9 is preferably positioned close to the discharge opening 7 for most effective evacuation of the mixing chamber 30. As being here positioned at the movable pipe/tube section 90, the evacuation outlet 9 is at least positioned here at a bottom of the mixing chamber 30 in the closed position of the sealing element 8, i.e. in case the pipe/tube section 90 is at its lowermost position. This allows for the evacuation outlet 9 be selectively positioned at a most preferred position in case the sealing element 9 is in its closed position and thus ready for a corresponding evacuation process as will be described in more detail herein below. For a beverage production process, the evacuation outlet 9 can then be selectively moved away from the discharge opening 7, e.g. upwards, and preferably be sealed off from the mixing chamber 30 by the sealing element 8, as can be seen in FIG. 5, to avoid any beverage product P be evacuated via the evacuation outlet 9 during a beverage preparation and dispensing process.

[0061] In a preferred embodiment, the sum of the cross-sectional area of the fluid inlet(s) 4, 5, 6 is preferably larger than the sum of the cross-sectional area of the evacuation outlet 9. This shall ensure a required increased pressure within the mixing chamber 30 at least during the sanitization process to ensure the mixing chamber 30 be completely filled with sanitizing liquid S during a sanitizing step thus increasing the sanitization effectiveness.

[0062] As exemplarily shown in FIG. 6, the inlet or the plurality of inlets 4, 5, 6, respectively, can open into the mixing chamber 30 via an inlet opening 41 being tangentially oriented to the mixing chamber 30—e.g. here to a side wall 32 thereof—so as to create a vortex V inside the mixing chamber 30 with a fluid L, W, A, S supplied via the respective inlet opening 41 into the mixing chamber 30. As can bee seen in FIG. 6B, the inlet opening 41 is preferably provided at a top T of the mixing chamber 30. In the shown preferred embodiment, the inlet opening 41 is preferably provided opposite to the discharge opening 7 to thus maximize the length of the vortex V which in turn results in a most effective swirling effect.

[0063] As can be seen in FIGS. 3 to 5, the beverage mixing device 1 may further comprise evacuation sections 11 provided at the fluid inlets 4, 5, 6 and/or the discharge opening 7 and/or the evacuation outlet 9 and designed to receive trapped gas or air to thus increase the sanitization effectiveness. The evacuation sections 11 are preferably fluidly connected to release outlets 12 which are preferably connected to one of the fluid inlets, e.g., for introducing gas/air into the mixing chamber 30, for evacuating the trapped gas/air to an outside of the mixing chamber 30.

[0064] Now referring to all FIGS. 1 to 6, the beverage preparation device 1 will be described in more detail. It has already been noted that the beverage preparation device 1 comprises a beverage mixing device 2 according to the present invention and as described herein above. The discharge opening 7 may be open downwards towards a dispensing area 70 onto which a consumer's recipient R (e.g. a cup, mug, bottle, etc.) can be placed for receiving the beverage product P be discharged/dispensed from the discharge outlet 7.

[0065] Moreover, the beverage preparation device 1 further comprises a liquid (preferably water) supply 20 fluidly connected to the at least one or the plurality of fluid inlets 4 for selectively delivering a liquid L, like water W, into the mixing chamber 30.

[0066] The liquid supply 20 can comprise a water supply for providing water W, e.g. to the mixing chamber 30. The liquid supply 20 may comprise a liquid storage 21 and/or a liquid connection 23 for connecting an external liquid/water source to provide the liquid L to be delivered to the mixing chamber 30. Moreover, the liquid supply 20 may further comprise a heater or a boiler 22 for heating the liquid/water to be delivered to the mixing chamber 30. The heater can be a static heater or an in-line heater. The liquid supply 20 may further comprise an (in-line) liquid or water filter 80 for filtering a liquid L (e.g. water W) to be delivered.

[0067] The beverage preparation device 1 further comprises at least one or a plurality of product supplies 40 each fluidly connected to the at least one or the plurality of fluid inlets 5 for selectively delivering a beverage ingredient A into the mixing chamber 30. The liquid supply 20 can be further fluidly connected to at least (a downstream) part of the product supply 40 or each of the product supplies 30 for selectively delivering the liquid L (e.g. water W) via the at least part of the respective product supply 40 into the mixing chamber 30. The supplied liquid L can thus be used for preparing a beverage product P (see FIG. 5) as well as used as a sanitizing liquid for sanitization purposes (see FIGS. 3, 6B and 6C).

[0068] The beverage preparation device 1 further comprises a gas supply 50 connected to the at least one or the plurality of fluid inlets 6 for selectively delivering a gas (e.g. air) G into the mixing chamber 30. The gas supply 50 can comprise an air supply for providing air, e.g., to the mixing chamber 30. The gas supply 50 may comprise an air pump or a compressor 51 for delivering (pressurized) gas G, preferably hot air, to the mixing chamber 30.

[0069] Moreover, the beverage preparation device 1 comprises a drainage 60 fluidly connected to the evacuation outlet 9 for draining the mixing chamber 30 here particularly during an evacuation process as will be described herein below.

[0070] In the following, a method for preparing a beverage product P according to the present invention will be described.

[0071] In a first step, a beverage preparation device 1 according to the present invention will be provided.

[0072] In a second step, the sealing element 8 is moved into the closed position (see FIG. 3). This is done here by moving down the pipe/tube section 90 carrying the corresponding sealing element 8 to thus close the discharge opening 7. When moving down the pipe/tube section 90, at the same time the evacuation outlet 9 is moved to a position at a bottom of the mixing chamber 30 and close to the discharge opening 7 and thus preferably at a lowermost section of the mixing chamber 30.

[0073] In a next step, the mixing chamber 30 is sanitized by circulating a sanitizing fluid S via the inlet or the plurality of inlets 4, 5, 6 through the mixing chamber 30 and via the evacuation outlet 9 to the drainage 60. This is exemplarily shown in FIGS. 3, 6B and 6C. As is shown here, the sanitizing fluid S is water W and preferably hot water being delivered both via the liquid supply 20 and thus corresponding inlet 4 and also via the corresponding part of the product supply/supplies 40 and thus corresponding inlets 5 to thus clean and sanitize the respective parts of the beverage preparation device 1 and beverage mixing device 2 being in contact with the corresponding beverage products P and beverage ingredients A to thus avoid any residues and hence cross-contamination particularly for a subsequent beverage preparation step.

[0074] In a next step, the mixing chamber 30 is evacuated by gas or air G being introduced via the inlet or plurality of inlets 4, 5, 6 through the mixing chamber 30 and via the evacuation outlet 9 to the drainage 60. This is exemplarily demonstrated in FIG. 4 showing the air be delivered by the corresponding inlets, 4, 5, 6 into the mixing chamber 30 and pushing the remaining liquid L within the mixing chamber 30 downwards towards the evacuation outlet 9 being positioned at the bottom B of the mixing chamber 30 and thus securely evacuating all of the liquid L within the mixing chamber 30 to an outside, e.g. the drainage 60.

[0075] After the evacuating step has been finished and the mixing chamber 30 preferably be dried out—e.g. by the use of hot air during the evacuation step—the sealing element 8 is moved into the open position for opening the discharge opening 7 and preferably also for closing (i.e. sealing off) the evacuation outlet 9 from the mixing chamber 30. This is done here by simply moving up the tube/pipe section 90 to an uppermost position by use of the actuator 10. Hence, the evacuation outlet 9 can preferably be sealed off from the mixing chamber 30 to thus avoid any beverage product P be discharged via the evacuation route. Moreover, the discharge opening 7 is released so that the beverage mixing device 2 is ready for beverage preparation and discharge. Therefore, liquid (like water) and/or other beverage ingredients A are delivered via the inlet or the plurality of inlets 4, 5, 6 into the mixing chamber 30 to prepare the beverage product P. This is exemplarily shown in FIG. 5.

[0076] The sanitizing fluid S can be hot water which can preferably be delivered by the liquid or water supply 20 and heated by the heater/boiler 22. The sanitizing fluid S can also be a chemically based sanitization liquid.

[0077] The gas for evacuation the mixing chamber 30 is preferably ambient air or can also be hot air being at a defined temperature above ambient and preferably below 65° C. to allow for an effective evacuation and preferably also drying of the mixing chamber 30.

[0078] As can be clearly seen in FIGS. 6B and 6C, the sanitizing fluid S can be supplied into the mixing chamber 30 via the inlet or the plurality of inlets 4, 5, 6, preferably the respective inlet opening(s) 41, so as to create a vortex V inside the mixing chamber 30. In a similar manner, also any other fluid or liquid can be supplied into the mixing chamber 30 via the inlet or the plurality of inlets 4, 5, 6, preferably their respective inlet opening(s) 41, so as to create a vortex V inside the mixing chamber 30. In case of the liquid be a liquid L like water W and/or a beverage ingredient A for preparing a beverage product, effective mixing of the components within the mixing chamber 30 can be obtained. Even the evacuation of the mixing chamber 30 can be made more effective by introducing a gas G in a similar way so as to create a vortex V inside the mixing chamber 30.

[0079] As can be clearly seen in FIG. 3, at least during the step of sanitizing the mixing chamber 30, any remaining gas in the mixing chamber 30 is preferably trapped in the evacuation sections 11 provided at (i.e. here around) the fluid inlets 4, 5, 6 and/or the discharge opening 7 and/or the evacuation outlet 9, respectively. The trapped gas is preferably evacuated via the release outlets 12 to an outside of the mixing chamber 30, preferably the drainage 60.

[0080] The present invention is not limited by the embodiments described herein above as long as being covered by the appended claims.