HK1263088B - Beverage preparation system - Google Patents

Description

The invention relates to beverage preparation machines for preparing beverages or similar products from a serving pack containing a serving pack (e.g. capsule) and an extraction product contained in the serving pack (e.g. coffee).

In many systems, the portion packaging is formed as a capsule, in which the extraction product is airtight. For the extraction, the capsule is inflated, for example, on two opposite sides. On the first side, an extraction liquid - generally hot water - is then introduced. On the second side, the extraction product is extracted from the capsule. This is done in a so-called brewing module.

In addition to a brewing unit, there may be one or more additional units to promote and add another component of the beverage, such as milk or syrup.

EP 1 992 263 B1 concerns a beverage machine (coffee machine) which provides real-time information on the quantity of beverage carried by the pump by means of a graphic or optical output device communicating with a detector (flow meter).

For example, WO2016/046239 refers to a beverage system with a beverage machine as the basic unit and a device to be docked to it for the preparation of skimmed milk. The device has a milk foam outlet and the system is designed so that the milk foam outlet and the beverage outlet of the basic unit are located in the docked state immediately next to each other above a storage platform for drinking vessels. Systems of this type allow the preparation of a mixed drink made from milk and, for example, coffee. While from a technical point of view such a preparation is actually the preparation of two beverages, one after the other or at least at the same time, it is perceived by the user as the preparation of a single drink.

The YouTube product video Mediamarkt Nederland: Media Markt - Siemens EQ./ S7000 tutorial shows a coffee machine which is accompanied by an animation when a coffee-milk mixed drink is served.

The invention is intended to create a beverage preparation system that is simple and intuitive to use and that provides the user with a good overview of the process state during the preparation process. The beverage preparation system has a brewing beverage preparation module, a milk delivery module and at least one outlet designed to deliver the brewing beverage and milk into the same beverage container, which beverage container is placed on a storage platform (i.e. without the need to add a graphic to the beverage container to indicate the process of delivering the hot beverage and filling the filling plate). It also has a beverage delivery unit with a volume of beverage added to the beverage beverage beverage beforehand. The beverage is placed in a common container (e.g. a brine) which is placed in a given direction, indicating the amount of milk and the volume of the beverage being delivered, which is the volume of the beverage being filled in the given time.

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The display element is designed to provide the user with an intuitive representation of the preparation progress during the preparation process, i.e. a graphic that makes it intuitive to see how far the preparation of the desired beverage has progressed, and that allows the progress to be recognised for the mixed drink (from the brewery and milk) as a whole, i.e. a quantity is graphically represented which is the sum of the quantities of the sub-beverages.

The fact that the display element shows the added quantity of the two beverage portions means that the fullness displays for the two beverage portions are shown in a combined display, i.e. the user does not need to add the quantities mentally or computationally to obtain a measure of the total volume.

For example, the display element may be shaped as a progress bar, where a progress bar is any so-called bargraph display in which the quantity to be displayed is represented by the expansion of a graphic element in one direction (the 'length' of the 'bar') - even if the shape differs from a pure bar shape, e.g. by the bar appearing as a drinking vessel, with a constant or along the direction of progress also not a constant diameter.

Alternatives to the progress bar are other diagram forms, e.g. a circle with a continuously growing sector indicating progress, etc.

In both cases, the colour of the extending filling element may be constant over the whole surface and throughout the whole preparation process - which will of course be the case in particular with a monochrome display - or may have a purely decorative colour scheme, or the colour of the two beverage portions may differ, e.g. by presenting the milk portion in a lighter colour than the brewing beverage portion, possibly with a separate reference to the milk foam.

The brewing beverage prepared by the brewing unit is in particular coffee, possibly also another hot drink which is mixable with milk. The brewing unit is therefore in particular a coffee machine or part of a coffee machine. It may be in particular a beverage brewing unit with a brewing unit to accommodate a serving pack of the above type, in particular a serving capsule filled with extraction medium (e.g. coffee powder).

The preparation module generally has, in addition to a brewing module, e.g. for the reception of the serving pack, other elements, as are known for beverage preparation machines, e.g. a water tank, a liquid pump and a water heater, arranged in a flow direction next to and in front of the brewing module to supply the brewing module with hot water, which is then brought into contact with the extraction product or extract, if any, in particular in a serving pack of the said type.

The preparation module and the milk module may be integrated together in a common unit. Alternatively, the preparation module and the milk module may also be present in separate, interconnected devices. In particular, as described in PCT/EP2015/071795, they may have a basic unit with the preparation module and the milk module as a docking unit with a docking element, powered by the basic unit and powered by electricity and steam. In this case, where the milk module cannot function as a separate machine, the basic unit and the milk module form a combined limited-space machine. However, it is not excluded that the milk module may be connected by a separate power supply unit (or a control unit) with its own power supply and/or a control unit (or a control unit) in the base of the machine.

In all these cases, a beverage brewing system may consist of the beverage brewing machine. Alternatively, it may have additional components in addition to the beverage brewing machine, as an option. For example, the beverage brewing system may have an operating device, e.g. a mobile phone, in particular a smartphone, with an appropriate user interface and software enabling the device to operate.

The display device with the display element may be present in particular on the beverage machine and may be located there, for example, on the basic unit.

The outlets for the delivery of the brewing beverage and the milk may be formed by a common outlet into which pipes for the two components of the beverage flow. Alternatively, they may be formed by two outlets, a brewing beverage outlet and a milk outlet for the milk and, where appropriate, the milk foam. In the latter case, the two outlets are particularly close enough to each other, e.g. not more than 5 cm, in particular not more than 4 cm or not more than 3 cm. Optionally, as described in PCT/EP2015/071795, the outlets may be formed by the beverage machine on the one hand and the milk module on the other hand, e.g. by being placed close to a surface containing a water vapour interface and an electrical interface.

The milk delivered by the milk module may be delivered as liquid hot or cold milk and/or as hot or cold milk foam. Thus, the milk module may have a milk delivery and/or milk foaming device, e.g. for selective delivery of milk and/or heating of milk and/or preparation of cold or hot milk foam. In addition, the milk module may have a milk vessel.

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Combinations are also possible, for example a previously transmitted preparation recipe may be stored in the storage medium.

In all cases, in addition to or as an alternative to user selection, a (pre) selection may be made from the results of a capsule detection, e.g. by detecting a coded portion pack by the beverage machine and the selection of preparation rules, proposed (standard) preparation rules and/or limits for set values is dependent on the characteristics of the detected capsule.

A recipe for preparation contains information on the amount of brewing beverage, for example, and optionally on the order (milk first / brewing beverage first) and the temperature of the milk (cold / hot / intermediate stages are also possible).

It also generally contains information on the quantity of milk and, for example, the quantity of milk foam, where this can be set, which can be stored or transmitted in two different formats: (a) X ml milk / Y ml milk foam) Z ml total volume with milk content = x% and milk foam content = y%

The data is then converted into x% = X/Z 100% and y% = Y/Z 100% - depending on the format transmitted and the format used in the machine.

Since the production of milk foam often necessarily includes a proportion of skimmed milk (depending on the equipment, e.g. about 30% of the total volume), X and Y are not independent of each other.

In embodiments, the volume of milk foam as such is taken into account when displaying the cumulative quantity, i.e. the quantity of beverage displayed is not a pure liquid volume but, within the precision appropriate for such display, the volume of beverage delivered including milk foam, including the air injected.

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The two quantities for the brew and the milk are determined (optionally taking into account the milk foam where appropriate) in different ways, i.e. the means of determining the quantities are qualitatively different. For example, a flow meter measures the amount of water supplied by the pump during the brewing process for the preparation of the brew and this measurement then corresponds to the measurement of the quantity of the brew.

In the latter case, for example, an empirically determined or, if necessary, calculated ratio is stored in the system and, e.g. in particular, in the beverage machine (in the controls or at least in a storage facility accessible to them, in the beverage machine or, e.g., in an external controller) which allows the desired amount of milk and the desired amount of milk meal to be used to derive a working time of the milk element with certain operating parameters. Such a ratio may take into account that other parameters may have an influence on the working time (running time) in addition to the amount of milk/milk meal, e.g. the fact that an air vent is used to open a milk water supply or a water pump (air pump, a milk pump, a teapot, etc.) is closed, or whether an air pump is used to open a milk pump (a water pump, a teapot, etc.).

Example: if X is the volume of milk and Y is the volume of milk foam, in the simplest case the quantities and times can be linked by linear factors, e.g. f1t1= X, f2t2= Y, where t1 is the time taken to milk with closed air valves, t2 is the time taken to milk with open air valves.

The empirical relationship can also take into account that in the production of milk foam, a proportion of liquid/non-foamed milk is always produced (i.e. it is assumed that never all the milk is foamed). This results for volume X of milk and volume Y of milk foam: X= f1t1+f3t2, Y= f2t2, where again t1 is the duration of milk production with closed air valves, t2 is the duration of milk production with open air valves. This results in t1=f2X-f3Y) /f1f2) and t2=Y/f2. The physical pressure (f2FX-f3Y) must not be negative, which is always a physical limit for the comparison of the relative proportions of milk and milk (this can be assumed in the case of the choice of a physical limit for the production of milk foam).

The relationship can be more complex, for example, when an air valve with adjustable valve cross section is operated and/or several air valves are controlled independently and/or when it is necessary to take into account that the milk temperature has an influence on the foam behaviour, etc. Whether or not such effects are taken into account depends on the desired accuracy of the indicator and the fill quantities

Such more complex relationships can be stored, for example, in the form of more complex formulas or as tables from which they are then interpolated.

In embodiments, the stored relation is used for both the control and the display element: for example, a total time t1+t2 for milk preparation is calculated for the display element.

In addition to or in addition to the preparation time, the quantity of milk may be measured by a flowmeter or other appropriate means.

Conversely, it is also possible to take into account the brewing time for the quantity of brew beverage instead of a measured flow rate or in addition to this, taking into account an appropriate algorithm.

In the display element, the proportions of the brewing beverage and milk can be taken into account in equal parts according to a first option. If the display element is, for example, a progress bar, this option allows the progress in the preparation/promotion of the first portion of the beverage prepared (brewing beverage or dispensed milk) to be first shown by gradually filling, for example, the left or bottom half of the display element and then the progress in the preparation/promotion of the second portion of the beverage through the other half. Instead of taking into account equal parts, other predefined proportions (e.g. 60/40 etc.) can be selected in the first option.

In the second option, these relative proportions of the display element can be selected according to the volume proportions of the specific prepared beverage as specified in the selected preparation rule.

According to a third option, these relative ratios can also be chosen on the basis of a pre-estimated preparation/breeding time; for this purpose, a ratio between the volume to be prepared and the brewing time can also be stored and available for the brewing beverage, where such a ratio may optionally depend on the nature of the capsule detected, provided that a capsule identifier is available.

The following illustrations give a detailed description of the subject-matter of the invention by means of preferred examples of embodiments, each showing schematically: Figure 1a beverage machine with a brewing module, a milk module and a common control;Figure 2a display device;Figure 3a diagram of a beverage machine system with the beverage machine and an operating device;Figures 4a, 4b the progress bars of the display device at different points during a beverage preparation; andFigures 5a, 5b the display device during a subsequent adjustment of the quantity of brewing beverage or milk.

The reference signs used in the drawings and their meanings are summarised in the reference sign list.

Figure 1 shows a view of a beverage brewing machine 1 with a basic unit 10 which is here trained as a capsule coffee machine and includes the brewing module and with a milk foaming device 11 which is connected to the basic unit and serves as the milk module. An andocument 12 of the type described in PCT/EP2015/071795 picks up relevant interfaces of the basic equipment, directs water, steam and possibly air from the basic unit to the milk foamer and also forms an electrical connection to supply voltage and/or transmit start signals from active power (in particular a pump) of the milk foamer. In addition, the andocument 13 forms a milk foaming element, which is located next to the brine outlet (Grade 14) of the coffee maker.

The basic unit, as is known for coffee machines, has a water tank, a water pump and a water heater. Furthermore, there is a brewing chamber for preparing coffee from heated water by extraction from coffee powder, which coffee powder is provided here in a serving capsule, which is inserted into the coffee machine before preparation. Alternatively to the design shown as a serving capsule system, the coffee machine can also be fully formed as a so-called coffee, which also has a coffee grinder and grinds the coffee powder portionally and is fed to the brewing chamber.

The coffee machine may also have a container for consumed coffee powder servings (in capsules or in bulk, depending on the design of the coffee machine).

The coffee machine has a platform 21 for the setting of a drinking vessel, which may be formed, for example, by a lattice grill under which a receptacle is located.

Above the 21 platform is the coffee outlet 14 through which the brewed coffee is drawn to the vessel below, which is located under a hood 16 which forms part of the coffee machine housing and covers at least part of the outlet to the front and sides.

The basic unit 10 forms a front 22 which, as is known from other coffee machines, is surmounted by the stowage platform 21 on the one hand and the exhaust hood 16 on the other.

Also in front of the front there is a foam platform 23 on which the moored foam machine 11 is mounted.

Near the coffee outlet 14 and here at the outlet hood 16 there is a connection point for connecting the coffee maker to the coffee maker. This connection point has a steam supply terminal for connecting to a steam supply terminal of the coffee maker and possibly a hot water and/or steam supply terminal for connecting to a conduit for a supply fluid (hot water/steam) for the milling machine. The steam supply terminal and the hot water and/or steam supply terminal can be supplied by a water heater or by a steam heater if necessary, providing steam or hot water, for example by means of a heater or a steam heater, which can supply the coffee maker with liquid or steam, or by means of a steam heater or a steam heater, in the heating system.

In addition, there is an display device 31 and an operating element 32 which are arranged on the basic unit 10 in the export example shown, and together they form a device-specific user interface 30 (see Figure 3).

The display device 31 is a display, with or without touch screen functionality.

The control unit 32 is a physical control unit and here is formed as a rotary pushbutton, as it is known by many household appliances.The rotary pushbutton can be programmed to be selected by rotating between different selection elements (different menu items, different preparation instructions, different quantities of beverage, etc.) and by pressing in an axial direction to confirm the current selection indicated by the display device.

Other controls, combinations of controls or integrated solutions, such as a touch screen that is both the display device and the control, are also conceivable.

In the present embodiment, and often preferred in general, the beverage machine is designed to be fully functional as a standalone unit and without the external control described below, i.e. all input and output information really necessary for operation can be done via the unit's own user interface, which does not preclude the option of some non-operational functionalities, e.g. setting relative quantities, requiring input via the control.

Here again, the basic unit (capsule coffee machine) is designed to operate without the milk module, preferably with the

The absence of the milk module is detectable and the corresponding (milk) functions are only available when the milk module is coupled.

Figure 2 shows the display device 31 which has an indicator element 34 which is here formed as a progress bar (bargraph display).

In the example shown, the display element is a decorative bar, but it is also possible to provide such a progress bar with graphic elements, for example by selecting colors, shapes, moving elements, etc.; a representation of the progress bar, for example in the form of a drinking vessel, is also possible.

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Figure 3 shows a diagram of the beverage preparation system, which has an optional control unit 51 in addition to the beverage preparation machine of the type described in Figure 1.

The control may be connected to a communication network 52, e.g. the Internet or an intranet, or it may be possible to have a direct connection between such a network 52 and the beverage machine.

The beverage machine shall have a central control unit 40 (which may include or be superimposed on the basic unit and the milk module) The control unit 40 shall also be designed for communication with the user interface 30 and, where appropriate, the control unit 51 and be provided with or connected to the appropriate means of communication The optional control unit 51 may communicate in particular wirelessly (e.g. via Wi-Fi, Bluetooth, etc.) or, where appropriate, wired (e.g. via Ethernet, USB) with the control unit 40.

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A controller 51 of the type described may be designed and equipped as a smartphone and may be equipped with software to perform the functions described in European patent application 15 194 735.5 to which explicit reference is made here. It has a user interface, such as a touch screen, which functions as an input and output unit. Additionally or alternatively, the controller's keys may also serve as input units. Additionally or alternatively, a language input may be implemented.

If an operating system 51 is present, information to the user and user input may be output or input via the user interface 30 and/or the operating system 51.

Control unit 40 has a memory in which, among other things, preparation instructions can be stored. A preparation instruction contains control information that can be implemented in commands to control basic unit 10 and additional unit 11. Such control information contains, on the one hand, process information specifying a sequence of steps to be performed by basic unit 10 and/or milk module 11 to produce a total product. On the other hand, control information contains, for example, temperature, volume, time, etc. - hereinafter also referred to as processing parameters - which generally parametrize a process.

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For the preparation of a product, the basic unit 10 and the additional unit 11 implement the preparation process by means of the preparation rule, which includes the implementation of the control information or commands, respectively. If the preparation rule contains user instructions, these are displayed to the user at appropriate points in the process. For example, after receipt by the user by means of the control unit 32 or, if applicable, by means of the control unit, subsequent control information of the preparation process is implemented.

A preparation rule may have preparation parameters that may be adjusted by the user, as well as preparation parameters that are not adjusted by the user. Adjustable preparation parameters are, for example, (volume) shares of beverage ingredients in the total product, a total quantity, or the temperature of a beverage ingredient. For adjustable preparation parameters, the preparation rule may contain a default or default value, which is used if the user does not adjust the parameter.

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In Figure 3 the path of the brewing liquid to a drinking vessel 100 on the storage platform is shown from the far right to the far left and the path of the milk to the same drinking vessel from the far left to the far right.

As the water is being pumped from a water tank 81 to a water heater 84 - a circulator or boiler - by a water pump 82 to heat it to a brew temperature - for example, between 90°C and the boiling point - for the brew beverage. On the way to the water heater, i.e. between the water tank 81 and the pump 82 or as shown between the pump 82 and the alternator heater 84, a flow meter 83 (called a turbine wheel flow meter) is installed to measure the flow of the water heater 84 - a circulator or boiler - which measures the flow of the water heater transported by the pump. From the water heater the water is discharged into the boiler mode 85, where it is discharged by means of a water vapour pump. The water is then pumped through the boiler and discharged into the boiler, which is then discharged into the boiler as a liquid or a liquid which is not discharged into the boiler.

The milk M is supplied from a milk vessel 61 and in particular from a milk pump 62 which is, for example, a gear pump as described in PCT/EP2015/071795. This can also be used to cool the milk by cold foaming, depending on the type of preparation, with air L (first air valve 63) being added. From the milk pump 62 the milk is passed, at least partially as milk foam, to a mixing nozzle 65 where it is heated by steam D and/or heated by air (second air valve 64), depending on the type of preparation. From there it is passed through the drinking water to the milk vessel 100.

For example, both the first and second air valve 63 and 64 are controllable. By selecting the air supply via the first air valve 63 and/or the second air valve and/or the steam supply, both the temperature and the foam content can be controlled within limits. The principles of operation of a possible milk module are described in the aforementioned PCT/EP2015/071795 which is specifically referenced here.

The control unit 40 controls the water pump 82, the milk pump 62 and the valves 63, 64 and also controls the flow of heated water or steam (in the brewing module 85, the mixing nozzle, if necessary a cleaning fluid path), e.g. via a controllable multi-way valve (not shown in Fig. 3). The control unit 40 is also in communication with the user interface 30. To determine the flow rate to which the indicator 34 is transmitted, the flow meter 83 results are taken into account, and the time taken to measure the flow rate depends on the pressure exerted by the air flow (in Fig. 63, 64 or 64), depending on the direction of flow of the mixture, and the flow rate is also determined in a direction other than the direction of flow of the mixture.

Figures 4a and 4b show the indicator 34 (progress bars) during different stages of beverage preparation. In a first stage (Fig. 4a), one beverage component is prepared and the corresponding progress is shown by the growing filled bar 34.1. The first beverage component may be, for example, the brewing beverage, the filling level of which is determined by the flow meter 83 (extended arrow). Depending on the recipe, the milk stock can also be prepared first in reverse, in which case the filled bar component grows during the first stage, for example, as a function of time (squeezed bar). In the second stage (Fig. 4b), the same amount of beverage can be prepared for other beverages, whereby the additional cost of filling the bar 34.1 is not taken into account, and at least two parts of the filled bar 34.2 are also excluded.

Optionally, the display element may contain information on which part represents the first beverage component and which part represents the second beverage component, shown here as a line 34.3.

Whether or not such an indication is available, the relative proportion of beverage ingredients in the total display element (here in the progress bar) may be fixed or dependent on the recipe, e.g. it may reflect the relative volume proportions, taking into account the different densities of milk and milk foam or not.

If the user wishes to adjust the quantity of the beverage or the quantity of any of the beverage components during the preparation process, he may, for example, operate the control 32 - for example by turning the rotary push-button - or make a corresponding input in another way.

Figure 5a shows the adjustment of the amount of brew beverage (coffee quantity) to which the user is then led when he presses the control during brewing, in particular by turning the rotary push-button (in the case of a push-button operation, the same or optionally another step may be provided, e.g. a break in brewing and/or the display of a menu selection). In addition to 35 other symbols, for example, which are adapted to the step to be taken, the display 34 is presented in a general representation analogous to Figure 4a/Fig. 4 but in a different scale. The total length of the progression (in the case of a push-button operation) is now approximately equal to 100 ml per 100 ml of the total volume of the brew, for example, or 300 ml per 200 ml of the total volume of the total volume of the brew, which is equivalent to the maximum volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of the total volume of

In addition to the actual display element, two additional display objects appear: the adjustment arrow 93 can be moved to the right or left by pressing the control (turning the rotary button) and corresponds to the total amount of beverage currently selected; an optional marking 94 appears, representing the first amount of beverage according to the preparation rules and at the same time the starting point for the adjustment arrow 93 from which it can be moved to the right or left; the current, measured, already prepared beverage M is the upper limit 96 for the selectable values.

In the example illustrated, the corresponding numerical value 91 for the selected quantity of beverage is displayed at the same time as the setting arrow 93.

Once the user has reached the desired amount of brew, he confirms the selection by pressing the turn button.

When the rotary button is pressed during the milk production/preparation, a display very similar to the one shown in Figure 5b appears, again with the option of moving the adjustment arrow 93 between the maximum value 97 and the quantity of milk already produced/prepared as the lower limit 96 and then confirming the selection made. In contrast to Figure 5a, Figure 5b shows an adjustment of the quantity downwards in comparison to the first beverage. The fact that the quantity of milk and not the beverage effort can be adjusted, e.g. as shown by a brightest symbol 35 (or here with a colour of the beverage), by a numerical description of the 91st mass/mass (and further adjustment of the beverage) and by adjusting the colour of the beverage, etc.

List of reference marks

1Beverage machine10Basic unit (coffee machine)11Milk foamer12And document element13Milk outlet14Coffee outlet16Outlet hood21Setting platform22Front23Milk foamer platform30User interface31Display device32Operating element34Display element34.1Fill bar part34.2Unfilled bar part34.3Separator35Symbol36First entry37Second entry40Controller41Timer42Fill level determination device51B52Network61Milk tank pump 62Water pump 63Water tank 62Water tank 62Water tank 62Water tank 62Water tank 62Water tank 62Water tank 62Water tank 62Water tank 62Water tank 62Water tank 62Water tank 84Water tank 94Water tank 94Water tank 84Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water tank 94Water

Claims (9)

1. A beverage preparation system (1) comprising preparation module for a brewed drink and a milk module (11) for dispensing milk, an outlet (13, 14) for dispensing the brewed drink and milk into a drinking vessel (100) placed under the spout means, and a display device (31) for graphically displaying the dispensed beverage amount in real time, the display device (31) being adapted to displaying a cumulative amount of the dispensed brewed drink and the dispensed milk via a common graphical display element (34), characterized by first means for determining an amount of the dispensed brewed drink and second means for determining an amount of the dispensed milk, wherein the first and second means are different, and wherein the first means includes a flow meter.
2. The beverage preparation system of claim 1, wherein the second means is adapted to determine an amount of milk dispensed based on a relation stored in a memory from the time elapsed since a beginning of the milk delivery.
3. The beverage preparation system according to claim 1 or 2, wherein the milk module includes a milk foaming device, and wherein the cumulative quantity includes a volume of milk taking into account the milk foam.
4. The beverage preparation system according to any one of the preceding claims, adapted to proportionally take into account relative volume fractions of the brewed drink and the milk when indicating the total amount.
5. The beverage preparation system according to any one of the preceding claims, wherein the brewed drink preparation module comprises a brewing module (85) for receiving a portion pack filled with coffee powder, in particular a capsule.
6. The beverage preparation system according to any one of the preceding claims, comprising a control unit (40) which is arranged to control the preparation module and the milk module (11).
7. The beverage preparation system according to claim 6, comprising an operating device (51) with an operating device user interface, wherein the operating device is arranged for transmitting preparation instructions defined and/or selected via the operating device user interface to the control unit (40).
8. The beverage preparation system according to claim 7, wherein the display device is formed by the operator device user interface.
9. The beverage preparation system according to any one of claims 1 to 7, comprising a beverage preparation machine comprising at least said preparation module, wherein said display device is provided on said beverage preparation machine.