BEVERAGE PREPARATION MACHINE WITH A LOCKING MEANS AND A COUPLING ELEMENT AND BEVERAGE PREPARATION SYSTEM

Description

State of the art

[0001] The invention relates to a beverage preparation machine for preparing a beverage using a cartridge system.

[0002] Such beverage preparation machines are generally known from the prior art, for example from EP 2 017 221 A1 and WO 96 / 36556 A1, and are used to produce beverages from pre-portioned cartridges. The production of beverages with such beverage preparation machines is extremely convenient for the user, as they only have to insert a cartridge into the beverage preparation machine and initiate a start-up procedure. The beverage preparation machine, also referred to as a dispenser, then produces the beverage fully automatically, i.e. in particular the preferably liquid beverage substance is mixed with a predetermined amount of liquid, in particular cold and carbonated water, and is then passed into a drinking vessel. In this way, mixed drinks in particular can be produced much more easily, quickly and with less effort for the user.The user can choose from a variety of different cartridges with different beverage substances, so that he can produce different beverages according to his taste.

[0003] It is important for such beverage preparation machines that the cartridge is securely held within the beverage preparation machine, preventing both leakage and recontamination. In particular, it must be ensured that a user does not remove the cartridge from the beverage preparation machine before the beverage preparation is complete, as this could result in uncontrolled liquid leakage from the beverage preparation machine. Furthermore, a reliable connection between the liquid supply of the beverage preparation machine and the cartridge is crucial for leak-free operation. Disclosure of the invention

[0004] The object of the present invention was therefore to provide a beverage preparation machine that meets these requirements. In particular, it should enable leak-free beverage production without recontamination of components of the beverage preparation machine. The beverage preparation machine should simultaneously offer a high level of operating convenience and be cost-effective to implement.

[0005] The dispensing is achieved with a beverage preparation machine according to claim 1.

[0006] The present invention relates to a beverage preparation machine, in particular a dispenser, for preparing a beverage by means of a cartridge system comprising a cartridge containing a beverage substance in a reservoir, and a cartridge receptacle connected to the cartridge, which cartridge receptacle has at least one liquid supply opening, a mixing chamber, and a beverage outlet. The cartridge has a hollow space as a reservoir in which the beverage substance is located. This substrate is preferably liquid, in particular a concentrate, and is mixed with a liquid, in particular water, to produce a beverage and then collected in a container, preferably a drinking vessel, in particular a glass and / or a cup, which particularly preferably stands on a support of the dispenser arranged below the cartridge holder in a storage area.The storage area particularly comprises a liquid collection device. This liquid collection device serves, for example, to collect residual liquid that drips from the beverage outlet and / or the liquid outlet, or if a user does not place a container or drinking vessel in the storage area in a timely manner before the start of beverage preparation, or if it is incorrectly positioned or removed before the end of preparation. The beverage substance preferably comprises liquid pre-mix ingredients for soft drinks, such as caffeinated, carbonated, fruit-based, and / or sugary lemonades and / or juices, beer (mixed) drinks, or other alcoholic or non-alcoholic (mixed) drinks. The cartridge preferably has a cartridge opening, which is particularly preferably closed by a sealing element, for example a sealing film, and is thereby separated from the mixing chamber of the cartridge receptacle.The cartridge holder is preferably firmly, in particular non-rotatably, connected to the cartridge in a connecting area.

[0007] The beverage preparation machine comprises a cartridge holder, in particular one with a balcony-like design, wherein the cartridge system can be inserted into the cartridge holder. "Balcony-like" preferably means that the cartridge holder protrudes laterally from a housing of the beverage preparation machine and has a substantially horizontal extension. The position of the cartridge holder is preferably arranged at a height from a support surface of the beverage preparation machine that corresponds to 20-90% of the total height of the beverage preparation machine, particularly preferably 40-80%, very particularly preferably 50-70%, and in particular substantially 60%. The cartridge holder is particularly preferably provided so as to be at least partially height-adjustable.

[0008] Preferably, the beverage preparation machine comprises a housing in which at least some of the components are fully or partially enclosed. The cartridge holder particularly preferably protrudes from this housing.

[0009] The beverage preparation machine further comprises a liquid reservoir and a liquid conditioning system for conditioning a liquid from the liquid reservoir. The liquid is preferably water. Particularly preferably, the liquid reservoir is a liquid tank, which is most preferably at least partially arranged within the housing of the beverage preparation machine. "Partially" means, in particular, that, for example, the liquid tank is arranged between a base surface and / or a lid of the housing, but an outer wall of the liquid tank is an outer wall of the beverage preparation machine. Alternatively or additionally, the beverage preparation machine comprises a connection to an external liquid supply network, for example, a public water network.The beverage preparation machine particularly preferably comprises a liquid treatment means, in particular a filter device, which is very particularly preferably arranged in the liquid tank, so that the liquid from the liquid tank must flow through the filter device before leaving the same. The liquid conditioning system withdraws liquid from the liquid reservoir and conditions it. In the present case, this preferably comprises tempering, in particular cooling, and carbonation, i.e., the addition of carbon dioxide to the liquid. Those skilled in the art will understand that tempering can easily also comprise heating the liquid, i.e., generally tempering the liquid to a predetermined temperature, in addition to or as an alternative to cooling.

[0010] The liquid conditioning system provides the conditioned, in particular cooled and carbonated, liquid to the cartridge system via a coupling element, where it is mixed with the beverage substance in the mixing chamber.

[0011] To move the liquid from the liquid reservoir toward the cartridge system, the beverage preparation machine, in particular the liquid conditioning system, comprises at least one pump for pumping the liquid. The pump is preferably an oscillating armature pump; alternatively or additionally, however, diaphragm pumps and / or rotary pumps can also be used. Those skilled in the art understand that pumps are standardized components that are generally purchased and that the pump specifications are selected taking into account the requirements of the beverage preparation machine while simultaneously minimizing costs. Therefore, according to a preferred embodiment, the beverage preparation machine comprises at least a first and a second pump, which are preferably connected in parallel. Particularly preferably, the pumps are each operated in alternative phases of a wave-like activation.In this way, it is particularly advantageous to use two standardized pumps that together have the same power instead of one pump specifically designed and manufactured for the beverage preparation machine. Of course, it is also possible to operate three, four, five, or more pumps in this way. In particular, for example, two pumps connected in series can be operated in parallel with two other pumps, also connected in series. However, those skilled in the art will understand that, due to space constraints, the smallest possible number of pumps is desirable.

[0012] Preferably, the beverage preparation machine, in particular the liquid conditioning system, comprises at least one flow measuring device, which is particularly preferably connected to the control device in order to provide the measured values ​​thereto. The control device is particularly intended to use these measured values, in particular, to control the pump. Very particularly preferably, a flow measuring device is provided upstream of each pump.

[0013] The liquid conditioning system preferably comprises a compression refrigeration machine, an absorption refrigeration machine, and / or a thermoelectric and / or thermoacoustic refrigeration machine. A compression refrigeration machine is particularly preferably used in the beverage preparation machine according to the invention. Such a compression refrigeration machine comprises at least one heat exchanger, a compressor, a condenser, and a throttle, in particular a capillary tube and / or an expansion valve. Alternatively or additionally, the beverage preparation machine comprises a heat engine. However, it is usually desirable to provide a chilled beverage and therefore to cool the liquid. The heat exchanger is most preferably an inline heat exchanger. This means, in particular, that the heat exchanger is integrated into the liquid path, e.g., formed around a liquid line.In this way, the installation space of the beverage preparation machine is used efficiently.

[0014] To produce carbonated beverages, the liquid conditioning system comprises a carbon dioxide source, a dosing device, and a mixing device. Commercially available carbon dioxide cartridges or cylinders are particularly suitable as the carbon dioxide source. Alternatively or additionally, the beverage preparation machine can also have connection options to an external carbon dioxide source.

[0015] The liquid conditioning system further comprises at least one compensator for reducing the pressure of the carbonated liquid. This advantageously achieves a reliable and controlled dispensing of the liquid, so that the carbonated liquid, in particular, does not splash upon exiting the beverage preparation machine. A predetermined liquid pressure can be set by means of the compensator. The compensator is preferably provided in a controllable manner for this purpose. Particularly preferably, the compensator is adjusted at the factory, i.e., during manufacture of the beverage preparation machine; alternatively or additionally, the compensator can be adjusted by a user and / or the control device. The quality of the produced beverage can thereby be advantageously increased.For example, such a compensator comprises a substantially conically shaped line section in which a longitudinally displaceable conical insert is arranged. By adjusting the conical insert, the gap between the insert and the line is changed, thereby changing the pressure accordingly. Such a compensator is an inline compensator, i.e., a compensator integrated into the fluid line. The pressure upstream of the compensator is preferably 6-14 bar, particularly preferably 8-12 bar, especially 10 bar, and downstream of the compensator, the pressure most preferably essentially corresponds to the ambient pressure, i.e., approximately 1 bar.

[0016] To introduce the conditioned liquid into the cartridge system, the beverage preparation machine comprises a coupling element for selectively coupling the liquid conditioning system to the liquid supply opening of the cartridge receptacle. The coupling element can thus selectively couple to the cartridge system and, for this purpose, comprises at least one liquid line. Finally, the beverage preparation machine comprises a control device for controlling the beverage preparation machine, in particular at least some of the aforementioned components, such as the pump, the liquid conditioning system, and / or the coupling element. The control device preferably initiates the beverage preparation and, in particular, also terminates it, for example, by stopping the liquid supply.

[0017] According to the invention, the cartridge holder has at least one locking means which is intended to reversibly lock the cartridge system in the cartridge holder, wherein the locking means can be reversibly transferred from an unlocked position into a locked position, wherein the locking means interacts with the cartridge system in a positive and / or non-positive manner in the locked position. The locking means is consequently actuated and subsequently locks the cartridge system in the cartridge holder. This means that a user cannot remove the cartridge system from the beverage preparation machine without first transferring the locking means to the unlocked position. This ensures in a particularly advantageous manner that no ongoing liquid dispensing can take place without a cartridge system being properly inserted into the cartridge holder.

[0018] According to a preferred embodiment of the present invention, the coupling element is transferable from a retracted position to an extended position, wherein in the extended position a fluid connection, in particular a tight one, exists between the liquid supply opening of the cartridge receptacle and the liquid line of the coupling element. The coupling element is thus provided to be movable, in particular relative to the cartridge system inserted in the cartridge holder, wherein in the extended position a coupling to the cartridge system, in particular the cartridge receptacle, takes place. This advantageously achieves the effect that the cartridge system can be inserted into the cartridge holder without damaging the liquid-carrying parts of the beverage preparation machine, and a reliable and secure coupling can subsequently be created.In particular, this makes it possible to ensure a liquid-tight coupling between the cartridge system and the beverage preparation machine.

[0019] According to a preferred embodiment, the cartridge holder has a recess, in particular a centrally arranged recess, into which the cartridge system, in particular the cartridge receptacle, can be at least partially inserted. The cartridge holder is therefore preferably substantially toroidal. The recess is particularly preferably designed to taper downwards so that the cartridge system is securely held in the recess but cannot slip downwards out of the cartridge holder. Most preferably, the recess has a substantially circular cross-section in a horizontal plane, in particular the same cross-section as the cartridge receptacle. "Substantial" here means that deviations from the circular shape can occur in certain regions.For example, the cartridge holder and / or the cartridge receptacle are preferably flat in the area intended for coupling with the coupling element. This allows for a simpler, tight coupling, as this is easier to achieve between flat surfaces. It also ensures correct orientation between the cartridge system, in particular the cartridge receptacle, and the beverage preparation machine, which in turn ensures a reliable, fluid-tight coupling between the cartridge receptacle and the coupling element.

[0020] According to a preferred embodiment of the present invention, the locking means is designed to be rotatable about an axis, in particular a horizontal axis. Particularly preferably, the locking means is an elongated element that is rotatable at one end, for example a lower end, about the axis, in particular a horizontal axis. This enables particularly simple and reliable movement between the unlocked and locked positions, since the upper, movable end can travel a sufficiently large distance to securely lock the cartridge system inserted into the recess.

[0021] According to a preferred embodiment, the cartridge holder comprises several, preferably at least three, locking means, which are particularly preferably distributed, in particular evenly, around the circumference of the recess. This advantageously ensures that the cartridge system is sufficiently securely locked in the cartridge holder in every case. In particular, the locking means distributed along the circumference of the recess can advantageously compensate for any incorrect positioning of the cartridge system.

[0022] According to a preferred embodiment of the present invention, it is provided that the at least one locking means is at least partially hook-shaped, wherein the hook-shaped section is intended to cooperate in a locking manner with a section of the cartridge system, in particular a flange of the cartridge. The cartridge and / or the cartridge receptacle therefore preferably has at least one laterally, in particular horizontally, projecting region behind which the locking means can engage. Since the recess is preferably tapered and the locking means according to this embodiment prevent upward movement, the cartridge system is advantageously securely secured in the cartridge holder despite the simple design of the locking means.The hook shape also enables a particularly advantageous dissipation of forces, even when a user pulls upwards on the cartridge system with a certain amount of force. Particularly preferably, the at least one locking means comprises at least one predetermined breaking point to prevent damage to the cartridge holder and / or the beverage preparation machine in the previously explained case.

[0023] According to a preferred embodiment, the at least one locking means is preloaded toward the unlocked position, in particular by a spring. Such spring preload is a particularly simple, proven, and reliable way to ensure that the locking means is in the unlocked position, so that a cartridge system can be easily inserted into the cartridge holder.

[0024] According to a preferred embodiment of the present invention, the beverage preparation machine, in particular the cartridge holder, has an operating element, in particular a hand lever, wherein the operating element is adjustable between a first position and a second position, wherein in the first position of the operating element the locking means is in the unlocked position and in the second position of the operating element the locking means is in the locked position, wherein the operating element is configured such that upon adjustment from the first position to the second position the locking means is transferred from the unlocked position to the locked position. The hand lever preferably projects horizontally laterally from the cartridge holder.According to the invention, it is particularly preferably provided that the operating element is rotatable about a vertical axis, which runs in particular centrally through the recess of the cartridge holder, preferably in an angular range of 10 to 180 degrees, particularly preferably in an angular range of 40-120 degrees, most particularly preferably in an angular range of approximately 90 degrees. A user can thus advantageously bring about the transfer of the locking means into the locked position or, after the beverage has been prepared, into the unlocked position. The person skilled in the art will understand that the above-mentioned vertical axis coincides in particular with a longitudinal axis of the cartridge system when the cartridge system is properly inserted into the cartridge holder. The cartridge holder preferably comprises an indicator element to show the user that the locked and / or unlocked position has been correctly reached.This can be, for example, a marking, whereby the user must align the control element with the marking. Alternatively or additionally, the indicator element is designed to emit an acoustic and / or visual signal to indicate correct locking and / or unlocking. Designing the control element as a pivoting lever is a particularly simple and intuitive option for the user. In particular, the different angle positions allow the user to immediately recognize whether the locking device is in the unlocked or locked position.

[0025] Alternatively, it is also conceivable that a user signals to the control device that a cartridge system is inserted simply by means of an operating element, such as a physical and / or virtual button, and that the locking means is automatically moved into the locked position, in particular via a motorized drive.

[0026] According to a preferred embodiment of the present invention, it is provided that the operating element is connected, in particular in one piece, to a slotted guide, wherein the slotted guide is designed to transfer the locking means from the unlocked to the locked position upon adjustment, in particular a rotation about the vertical axis. In this way, a particularly simple and reliable transfer, in particular of several locking means simultaneously, can be achieved. In the case that the slotted guide is designed in one piece with the operating element, the complexity of the beverage preparation machine is also advantageously reduced, since fewer components are present. If several locking means are provided, the slotted guide preferably has several guides, in particular identical to one another, so that preferably all locking means are moved simultaneously.

[0027] According to a preferred embodiment, the coupling element is preloaded toward the extended position, in particular by a spring. This ensures, in a particularly simple manner, that the coupling element automatically assumes a coupling position, i.e., the extended position, unless a component of the beverage preparation machine explicitly prevents this. The force exerted by the spring also advantageously ensures a certain contact pressure between the liquid supply opening and the coupling element, thus increasing the tightness of the connection.

[0028] According to a preferred embodiment, it is provided that the operating element is connected, in particular in one piece, to a slotted guide, wherein the slotted guide is designed to transfer the coupling element from the extended position to the retracted position upon adjustment, in particular a rotation about the vertical axis. Preferably, the coupling element has a guide means which is designed to functionally interact with the slotted guide. Particularly preferably, the guide means is a projection, in particular designed in one piece with the coupling element, wherein the projection very particularly preferably bears against the slotted guide with a contact surface. In this case, the slotted guide interacting with the coupling element can be designed in one piece with the slotted guide interacting with the locking means or can be manufactured separately and optionally connected to the slotted guide.The slotted guides are preferably different sections of a common slotted guide. In this particularly advantageous manner, the transfer of the locking means from the locked to the unlocked position is simultaneously linked with the transfer of the coupling element from the extended to the retracted position. After both movements have been completed, the cartridge system can preferably be removed from the cartridge holder. Those skilled in the art will understand that the movements of the coupling element and the locking means are effected differently. Since the locking means is preferably pretensioned towards the unlocked position, the slotted guide clears a path for the locking means, while the spring tension effects the movement of the locking means. With the coupling element, this occurs in particular in the opposite way.The spring tension here preferably causes a preload in the direction of the extended position, while the guide rail actively moves the coupling element in the direction of the retracted position.

[0029] According to a preferred embodiment of the present invention, the beverage preparation machine comprises a compressed air source, wherein the compressed air source is configured to supply compressed air to the cartridge system, in particular to a compressed air supply opening of the cartridge receptacle, wherein the coupling element is further configured for selective coupling between the compressed air source and the compressed air supply opening of the cartridge receptacle, wherein the coupling element has a compressed air line. The compressed air is used to transfer the beverage substance from the reservoir of the cartridge into the mixing chamber of the cartridge receptacle. For this purpose, the compressed air is introduced into the reservoir through a compressed air line, which on the one hand prevents the formation of a negative pressure and on the other hand preferably actively expels the beverage substance by the compressed air.This advantageously ensures that the entire beverage substance is transferred from the cartridge and advantageously shortens the beverage preparation time.

[0030] According to a preferred embodiment of the present invention, in the extended position, a particularly tight fluid connection is established between the compressed air supply opening of the cartridge holder and the compressed air line of the coupling element. This tight fluid connection is preferably established simultaneously with the tight fluid connection between the fluid supply opening and the fluid line of the coupling element.

[0031] According to a preferred embodiment, the coupling element has a sealing means at least in an area intended for contact with the cartridge receptacle, wherein the sealing means comprises an at least partially elastic material, in particular an elastic plastic material. Particularly preferably, the sealing means is provided as a coating. For example, the sealing means is sprayed onto the coupling element or applied using an in-mold process. Most preferably, the sealing means is made of a material that is safe for use in foodstuffs. In particular, the sealing means contains silicone. Such a sealing means advantageously ensures that a tight fluid-carrying connection is always present when the coupling element is in the extended position with the cartridge system inserted.The person skilled in the art will understand that, of course, there is no sealing agent in the outlet area of ​​the liquid line and / or the compressed air line, so that the liquid flow and / or the compressed air flow can enter the cartridge receptacle unhindered by the coupling element.

[0032] According to a preferred embodiment, the cartridge holder has at least one stop means, which preferably interacts with a slotted guide, in particular the slotted guide explained above, in such a way that the first position and / or the second position are defined as end positions. Particularly preferably, the stop means is an element that is firmly connected, in particular integrally, to the cartridge holder and that interacts positively and / or non-positively with a guide in the slotted guide in the first and / or second position. Very particularly preferably, the stop means is designed in the shape of a pin. This ensures that the cartridge holder is not damaged by the operating element and / or the slotted guide being moved beyond the first and / or second position.

[0033] According to a preferred embodiment, the cartridge holder comprises a position detection means for detecting at least one position of the operating element and / or the slotted guide. The position detection means is particularly preferably a position switch or limit switch. Most preferably, the position detection means comprises a light barrier and / or a proximity switch. In particular, the position detection means is arranged such that it detects when the operating lever has reached the second position and / or when the locking means has reached the locked position. Alternatively or additionally, the position detection means or a further position detection means is configured such that it detects the extended position of the coupling means.This advantageously excludes the possibility that, according to a preferred embodiment, the liquid line and preferably the compressed air line of the coupling element are rigid lines and, in particular, are provided integrally in the coupling element. Since the coupling element is preferably designed to be movable, at least one sectionally flexible line must be arranged between the liquid conditioning system and the coupling element and / or between the compressed air source and the coupling element in order to compensate for the movement. However, by providing rigid lines in the coupling element, reliable operation is ensured, since this ensures a constant orientation of the lines relative to the cartridge holder and therefore also to a cartridge system arranged therein. In addition, complex maintenance on the movable coupling element is excluded.

[0034] According to a preferred embodiment of the present invention, the beverage preparation machine, in particular the control device, is configured such that beverage preparation, in particular a liquid supply and / or a compressed air supply through the coupling element, is only possible when the operating element is in the second position and / or the locking means is in the locked position. Particularly preferably, the control device is functionally connected to the position detection means such that beverage preparation can only be initiated when the position detection means has detected that the locking means has reached the locked position and / or that the operating element has reached the second position. This ensures that incorrect operation of the beverage preparation machine is excluded.

[0035] A further subject of the present invention is a beverage preparation system with a beverage preparation machine according to the invention and a cartridge system, wherein the cartridge system for beverage preparation can be inserted into the cartridge holder of the beverage preparation machine, wherein the cartridge system comprises a cartridge comprising a reservoir filled with a beverage substance and a cartridge receptacle connectable to the cartridge in a connection area, wherein the cartridge has a cartridge opening, wherein the cartridge opening is closed with a sealing element, in particular a sealing film, wherein the sealing element seals the reservoir fluid-tightly from the cartridge receptacle, wherein the cartridge receptacle has a mixing chamber connectable to the reservoir and a liquid supply opening opening into the mixing chamber for coupling to the liquid line of the coupling element,so that a liquid can be introduced into the mixing chamber, wherein the cartridge receptacle has a cartridge unloading device for transferring the beverage substance from the reservoir into the mixing chamber, wherein the cartridge receptacle has a beverage outlet for discharging a beverage produced by mixing the liquid with the beverage substance from the mixing chamber.

[0036] The beverage preparation system according to the invention is particularly flexible and hygienic since no recontamination of parts of the beverage preparation machine occurs and a liquid withdrawal after premature removal of the cartridge system is excluded since the locking means holds the cartridge system securely in the cartridge holder and preferably the control device prevents a liquid withdrawal in the unlocked position of the locking means.

[0037] The cartridge and / or the cartridge receptacle is preferably made of plastic, in particular by an (in-)molding and / or blow-molding process. The cartridge has a side wall, which has, for example, a round, rectangular, square, conical, or oval cross-section. At one end of the side wall, a base is usually provided, in particular in one piece. The side wall and the base region define a cavity which forms the reservoir in which a beverage substance, in particular in liquid form, is provided. At the other end of the wall region, a connecting region is provided, with which the cartridge is connected to the cartridge receptacle.

[0038] Alternatively, it is also conceivable for the cartridge to be made at least partially of glass. In this case, an intermediate piece is preferably provided between the cartridge receptacle and the cartridge. Such an intermediate piece functions, in particular, as an adapter. Thus, conventional, commercially available bottles (made of glass or other materials) can also be used in the cartridge system.

[0039] The cartridge preferably comprises a cartridge neck having at least one flange, in particular at least two flanges spaced apart from one another. The at least one flange particularly preferably protrudes from the connecting region and protrudes at an angle, most preferably at a right angle, from a wall region of the connecting region. When the cartridge system is properly inserted into the cartridge holder, the flange is particularly horizontally aligned. The flange is preferably made of solid material, i.e., is not hollow. In particular, the flange is injection-molded and / or manufactured in one piece with the cartridge, in particular the side wall of the cartridge and / or the cartridge neck. Because the cartridge receptacle preferably essentially establishes the connection to the cartridge holder, the cartridge can be designed to be flexible.For example, the cartridge can have different diameters and / or different axial lengths to accommodate different volumes of beverage substance. The beverage substance is preferably in liquid form, in particular as a syrup and / or a beverage concentrate. However, it is also conceivable for the cartridge holder to at least partially comprise support means for the cartridges, for example in the form of a stand-up collar.

[0040] The cartridge receptacle can be permanently connected to the cartridge or can be a replacement part that is removed from the cartridge after use and connected to a new cartridge. Particularly preferably, the cartridge receptacle is connected to the cartridge in a form-fitting and / or force-fitting manner, in particular by clipping. Preferably, the flange on the cartridge interacts sealingly with the cartridge receptacle. For this purpose, the circumference of the flange can, for example, engage in a groove in the cartridge receptacle. This flange / groove connection can also serve as a force-fitting connection to prevent the cartridge from shifting relative to the cartridge receptacle during beverage or food production, which could cause the connection between the cartridge and the cartridge receptacle to become leaky.

[0041] As previously explained, it is preferred if the locking means cooperates with the at least one flange in a locking manner. Alternatively or additionally, a fastening means is provided in the side wall region of the cartridge and / or in the region of the cartridge neck. In this case, the at least one locking means cooperates with the fastening means in a locking manner, alternatively or in addition to the flange. The fastening means can, for example, be a groove into which the locking means engages.

[0042] The cartridge has a cartridge opening, wherein the cartridge opening is closed with a sealing element, in particular a sealing film, wherein the sealing element seals the reservoir fluid-tightly with respect to the cartridge receptacle. Preferably, the sealing element is attached to the at least one flange, in particular sealed thereto. The sealing film particularly preferably comprises a single- or multi-layer membrane. It is crucial that the sealing element, on the one hand, seals the reservoir fluid-tightly, so that even in the arrangement preferred according to the invention, in which the cartridge system is inserted into the cartridge holder with the cartridge opening facing downwards, the beverage substance cannot leave the reservoir when the sealing element is closed.On the other hand, the sealing element must be able to be opened locally and easily by the cartridge unloading device so that the beverage substance can be transferred quickly and completely into the mixing chamber of the cartridge holder.

[0043] According to a further preferred embodiment, the beverage preparation machine comprises an identification detector for reading a product identification code on the cartridge and / or the cartridge receptacle, wherein the identification detector is preferably arranged above and / or behind the cartridge holder, in particular in the housing of the beverage preparation machine. Preferably, a disc that is transparent at least to the radiation used and in particular also in the optical range is arranged in front of the identification detector. The product identification code is preferably embedded in a barcode, an RFID code, a QR code, a data matrix code, a color code, a hologram code, or the like. This advantageously enables automatic reading of the product identification code.The identifier detector comprises, in particular, an optical sensor, such as a CCD camera, which automatically reads the barcode, QR code, or data matrix code when the cartridge system is inserted into the beverage preparation machine. Alternatively, the identifier detector comprises a transmitting and receiving antenna for automatically reading the RFID codes. Alternatively, it would be conceivable for the product identification identifier to be embedded in other automatically readable computer chips. Within the meaning of the present invention, the term "QR code" encompasses, in particular, any data matrix code. In this respect, the terms "QR code" and "data matrix code" are used synonymously. Alternatively or additionally, it would also be conceivable for the product identification identifier to comprise a barcode, a dot code, a binary code, a Morse code, a Braille code, or the like.The code can also be embedded in a three-dimensional structure, such as a relief. The product identification code includes, in particular, the so-called product identification number, in particular a Universal Product Code (UPC), a European Article Number (EAN), a GS1 code, a Global Trade Item Number (GTIN), or the like. This eliminates the need to introduce a new code system. In particular, the product identification code operates under the GS1 standard. The product identification code is preferably printed, glued, and / or incorporated into the surface of the cartridge directly onto the cartridge and / or the cartridge holder, for example, by (laser) engraving, punching, or directly during cartridge production. Alternatively, it would also be conceivable for the cartridge to be at least partially encased in a coating, such as a sleeve, on which the product identification code is arranged.The cover can also be glued or welded to the cartridge and / or cartridge holder. The cover or sleeve can be made of a plastic film, textile, or paper.

[0044] According to a preferred embodiment of the present invention, the cartridge unloading device comprises a mandrel guide and a piercing mandrel mounted displaceably within the mandrel guide, in particular in one direction. The piercing mandrel can be displaced by an actuator element of the beverage preparation machine between a retracted position, in which the piercing mandrel is spaced from the sealing element, and an extended position, in which the piercing mandrel pierces the sealing element and extends into the reservoir. A cartridge unloading device designed in this way is particularly advantageous because the piercing mandrel enables a targeted and simple opening of the sealing element and thus a precisely controllable transfer of the beverage substance from the reservoir into the mixing chamber.

[0045] According to a preferred embodiment of the invention, the beverage preparation machine comprises a drive, in particular a motorized drive, for the actuator element. Particularly preferably, the drive is coupled to the operating element, in particular the hand lever. Most preferably, the drive is arranged in the housing of the beverage preparation machine and functionally connected to the actuator element via a deflection mechanism. The actuator element of the beverage preparation machine is preferably controllable by the control device. Further details are set forth in the applicant's application entitled "Beverage preparation machine with a drive and beverage preparation system" of the same filing date, to whose disclosure, in particular with regard to possible embodiments of the actuator element and / or drive, reference is made, whereby the relevant disclosure is incorporated into the present disclosure.

[0046] According to a preferred embodiment of the invention, it is provided that the cartridge receptacle, in particular the cartridge unloading device, comprises a compressed air supply opening for coupling to the compressed air line of the coupling element, a compressed air outlet and a compressed air line which extends from the compressed air supply opening to the compressed air outlet, wherein the coupling element is designed to introduce compressed air from the compressed air source of the beverage preparation machine through the compressed air supply opening into the compressed air line, wherein the compressed air line is preferably integrated into the piercing mandrel, wherein the cartridge unloading device is particularly preferably designed such that in the extended position of the piercing mandrel the beverage substance can be transferred from the reservoir into the mixing chamber by the compressed air.Those skilled in the art will understand that this embodiment is preferably implemented together with the embodiment according to which the beverage preparation machine comprises a compressed air source. In this case, the compressed air source provides the compressed air, which—in particular only in the extended position of the piercing mandrel—is introduced through the compressed air line of the piercing mandrel and via the compressed air outlet into the reservoir, thereby assisting in the transfer of the beverage substance from the reservoir into the mixing chamber. When the cartridge system is properly arranged in the cartridge holder and, in particular, locked via at least one locking means, the compressed air supply opening of the cartridge receptacle can be brought into fluid communication with a compressed air line of the beverage preparation machine.Preferably, the beverage preparation machine is configured such that compressed air is provided, particularly immediately after a fluid-tight connection is established between the compressed air supply opening of the cartridge receptacle and the compressed air line of the coupling element. Since the compressed air line is thus pressurized, particularly immediately after a connection is established, this advantageously prevents beverage substance from entering the beverage preparation machine through the compressed air line, thereby preventing cross-contamination and further improving the hygiene of the beverage preparation machine.

[0047] The piercing mandrel preferably has at least one, preferably several indentations and / or protrusions, in particular channels, on its outer circumference, which serve as an outlet for the beverage substance. The number and size of the indentations and / or protrusions preferably depends on the viscosity of the beverage substance. The outer wall of the piercing mandrel is therefore preferably provided with at least one side channel for guiding the beverage substance towards the mixing chamber in the extended position when the sealing element is pierced. The substrate can then flow past the sealing element towards the mixing chamber through the side channel formed laterally on the piercing mandrel and extending in particular substantially vertically. The at least one side channel is designed in particular in the form of a groove that is open on one side.It is conceivable that, in particular, the cross-section of the side channel is also adapted to the viscosity of the beverage substance, so that the at least one side channel controls or limits the flow of the beverage substance toward the mixing chamber. At high viscosity, multiple side channels and / or side channels with a larger cross-section are used, while at lower viscosity, fewer side channels or side channels with a smaller cross-section are provided. Thus, for each cartridge or each beverage substance, there is preferably a suitable cartridge receptacle, in particular a suitable cartridge unloading device.

[0048] Yet another object of the present invention is a method for preparing a beverage with a beverage preparation system according to the invention, characterized by the following steps: Inserting a cartridge system consisting of a cartridge and a cartridge receptacle into the cartridge holder, transferring the locking means from the unlocked position to the locked position, transferring the coupling element from the retracted position to the extended position to establish a connection between the liquid line of the coupling element and the fluid supply opening of the cartridge receptacle and preferably to establish a connection between the compressed air line of the coupling element and the compressed air supply opening of the cartridge receptacle, transferring the beverage substance from the reservoir of the cartridge into the mixing chamber of the cartridge receptacle, in particular by feeding compressed air into the reservoir, introducing a liquid into the mixing chamber of the cartridge receptacle through the coupling element,Discharge of the beverage produced in the mixing chamber by mixing the beverage substance with the liquid through the beverage outlet.

[0049] The method according to the invention offers the same advantages as the beverage preparation machine according to the invention and the beverage preparation system according to the invention, i.e. in particular a simple, hygienic and reliable beverage preparation in which incorrect operation and / or contamination due to unintentionally escaping liquid are excluded.

[0050] In particular, the steps of transferring the beverage substance from the reservoir of the cartridge into the mixing chamber of the cartridge receptacle and of introducing a liquid into the mixing chamber of the cartridge receptacle occur essentially simultaneously. Alternatively, the chronological sequence of the steps can be controlled by the control device, in particular taking into account product information read by the identification detector. Thus, for example, the time, speed, degree of carbonation, and / or temperature of the introduced liquid can be controlled depending on the beverage substance, in particular its viscosity. This is particularly advantageous for highly viscous beverage substances, e.g., syrup.

[0051] According to a preferred embodiment of the present invention, the step of transferring the beverage substance from the reservoir of the cartridge into the mixing chamber of the cartridge receptacle comprises actuating the cartridge unloading device, in particular by transferring the piercing mandrel from the retracted position to the extended position, thereby causing the sealing element to be perforated. For this purpose, an actuator element of the beverage preparation machine is particularly preferably activated, which moves the piercing mandrel into the extended position. Most preferably, the actuator element is activated by a drive, in particular one controlled and / or motorized by the control device. Alternatively or additionally, the actuator element is connected directly or indirectly to the operating element, for example via a trigger mechanism.For example, it is possible for a user to actuate and / or release the actuator element by moving the hand lever to the second position, so that the control device receives the command to activate or actuate the actuator element by actuating another control element, such as a pushbutton switch, a physical and / or virtual button. This further simplifies the beverage preparation process.

[0052] According to a preferred embodiment, the step of transferring the locking means from the unlocked position to the locked position comprises transferring the operating element from the first position to the second position, and / or the step of transferring the coupling element from the retracted position to the extended position comprises transferring the operating element from the first position to the second position. Advantageously, the user can thus lock the cartridge system in the cartridge holder in a simple and comprehensible manner, or, in particular, unlock it again after the beverage has been prepared.

[0053] According to a preferred embodiment, the liquid is tempered, in particular cooled, and / or carbonated by the liquid conditioning system before being introduced into the mixing chamber.

[0054] According to a further preferred embodiment, a product identification code is read by the code detector before, during, or after inserting the cartridge system into the cartridge holder and / or feeding compressed air into the cartridge and / or introducing the liquid into the mixing chamber. The read product identification code is preferably evaluated by the control device, with the compressed air and / or liquid being particularly preferably fed in only if the product identification code can be verified by the control device.This ensures that the beverage preparation machine can only be operated with cartridge systems known or certified and / or compatible with the beverage preparation machine, thus avoiding damage to the beverage preparation machine or risk of injury to the user due to the inadvertent use of incorrect cartridge systems, which, for example, cannot withstand the pressure.

[0055] It is also conceivable that the properties of the liquid, and in particular the temporal progression of the volume flow, the total volume, the pressure, the delivery pauses, the temperature, and / or the degree of carbonation of the fed-in liquid, are controlled depending on the (verified) product identification code. Alternatively or additionally, the properties of the fed-in compressed air, and in particular the temporal progression of the volume flow, the total volume, the delivery pauses, and / or the pressure of the fed-in compressed air, are also controlled depending on the (verified) product identification code. Very particularly preferably, the ratio between the volume flow of the liquid and the volume flow of the compressed air is also controlled depending on the (verified) product identification code.In particular, all parameters and / or variables of the beverage production process that can be adjusted by the beverage preparation machine are embedded in the product identification code, so that the beverage preparation machine receives from the cartridge system all information that is necessary, or at least helpful or recommended, for the production of the respective beverage. It is also conceivable that this information is stored in an internal memory of the beverage preparation machine and retrieved with the help of the product identification code for the respective cartridge system and used to control the subsequent beverage production process as soon as the presence of this cartridge system in the cartridge holder is detected. Character description

[0056] In the following, the invention is described with reference to Figures 1 to 13These explanations are merely exemplary and do not limit the general concept of the invention. The explanations apply equally to the beverage preparation machine according to the invention, the beverage preparation system according to the invention, and the method according to the invention. Figure 1 shows a beverage preparation machine according to an exemplary embodiment of the present invention. Figure 2 shows a perspective detailed view of a beverage preparation machine according to an exemplary embodiment of the present invention. Figures 3-5 show schematic sectional views of successive steps of a method according to an exemplary embodiment of the present invention. Figure 6 shows a perspective detailed view of a cartridge holder according to an exemplary embodiment of the present invention. Figure 7shows a schematic plan view of a cartridge holder according to an exemplary embodiment of the present invention. Figure 8 shows a schematic plan view of a cartridge holder with an operating element in the first position according to an exemplary embodiment of the present invention. Figure 9 shows a schematic plan view of a cartridge holder with an operating element in the first position according to an exemplary embodiment of the present invention. Figure 10 shows a schematic plan view of a cartridge holder with an operating element in the second position according to an exemplary embodiment of the present invention. Figure 11 shows a schematic plan view of a cartridge holder with an operating element in the second position according to an exemplary embodiment of the present invention. Figure 12shows a perspective detailed view of a cartridge holder according to an exemplary embodiment of the present invention. Figure 13 shows a schematic plan view of a cartridge holder according to an exemplary embodiment of the present invention.

[0057] In Figure 1 a beverage preparation machine 1 according to an exemplary embodiment of the present invention is shown. Figure 1in particular, one possible appearance of the beverage preparation machine 1. Of course, other shapes are also possible. The beverage preparation machine 1 comprises a housing 2 in which most of the functional components, such as a liquid conditioning system, a coupling element 21, a power connection, a control device implemented, for example, on a circuit board, and the like, are arranged. The beverage preparation machine 1 comprises a power connection (not shown here) to an external power supply network and / or an internal energy storage device, for example, an accumulator sufficiently dimensioned for several beverage preparation processes.

[0058] Furthermore, the beverage preparation machine 1 here comprises a liquid reservoir 3, which is preferably designed as a water tank, as shown. The liquid reservoir 3 can be arranged externally, as shown, and connected to the housing 2 only via a base region. However, it is equally possible for the liquid reservoir 3 to be arranged entirely or partially within the housing 2. For example, the liquid reservoir 3 can be removed from the housing 2 for filling and / or can be filled via a cover access in the housing. Such a liquid reservoir 3 can additionally comprise means for liquid treatment. In the simplest case, such a means consists of a filter element, in particular for adjusting the lime content of the liquid.

[0059] Here, additional, optional control elements 6 are arranged in the upper area of ​​the housing 2. These are designed, for example, as push-button switches, but can take any desired form, such as a touchscreen with virtual buttons, physical knobs, virtual or physical rotary switches, etc. Using these additional control elements 6, a user can, for example, start or initiate a beverage preparation process and preferably also cancel it. Furthermore, control elements 6 can be provided, for example, for selecting a liquid volume and / or a carbonation level.

[0060] A cartridge holder 4 is arranged, projecting laterally from the housing 2. This cartridge holder 4 is the central location for beverage preparation. A cartridge system consisting of a cartridge 10 and a cartridge receptacle 14 connected to the cartridge can be arranged in the cartridge holder 4, which has a central recess for this purpose. The recess is preferably provided so that it tapers downwards so that a cartridge system can be inserted into the cartridge holder 4 from above, but cannot slip out of it downwards. In the present case, the cartridge holder 4 is approximately circular in shape, but the only decisive factor is that the recess fits the cartridge receptacle 14; the external shape of the cartridge holder 4 and its dimensions, however, are essentially freely selectable.However, the balcony-like shape shown here is generally preferred, as the resulting delicate, free-floating impression is particularly aesthetically pleasing. Preferably, the recess interacts with the cartridge receptacle 14 in a form-fitting manner, at least in sections. This form-fitting engagement is particularly preferably further supported by the cartridge holder 4 having an opening for a beverage outlet 15 of the cartridge receptacle 14 at its lower end, so that the cartridge receptacle 14 can only be correctly inserted into the cartridge holder 4 in one orientation, such that the cartridge system can be locked in the cartridge holder 4.

[0061] In particular, a storage area 7 is provided in a vertical line below the cartridge holder, which here comprises a storage grid and preferably a liquid collection device. For beverage preparation, a container, for example a drinking vessel such as a mug, cup, or glass, can be placed on the storage grid. If the user positions the drinking vessel too late in the storage area or misaligns it, or if dripping occurs, the beverage and / or liquid can pass through the storage grid into the liquid collection device arranged below and be subsequently removed.

[0062] The cartridge holder 4 is provided here at approximately 60% of the total height of the beverage preparation machine 1. However, the cartridge holder 4 can also be provided higher, for example at a height between 60% and 100%, preferably between 70% and 90%, and in particular at approximately 80% of the total height, or lower, for example at a height between 20% and 60%, preferably between 30% and 50%, and in particular at approximately 40% of the total height of the beverage preparation machine. Particularly preferably, the cartridge holder 4 is provided with adjustable height. In this way, the cartridge holder 4 can be adapted to the height of the respective drinking vessel, so that the beverage does not fall into the drinking vessel from too great a height. In this way, splashing of the beverage can be prevented.

[0063] According to the preferred embodiment illustrated here, an operating element in the form of a hand lever 5 is provided on the cartridge holder. A user can pivot the hand lever 5 about a vertical axis extending centrally through the recess between a first position and a second position. As will be explained in more detail below, this serves to lock the cartridge system in the cartridge holder 4, so that the cartridge system cannot be removed from the cartridge holder 4.

[0064] Preferably, the cartridge holder 4 and in particular the hand lever 5 are coupled to the control device of the beverage preparation machine 1 in such a way that the start of the beverage preparation is not possible when the hand lever 5 is in the first position, which corresponds to an unlocked position.

[0065] In Figure 2A perspective detailed view of a beverage preparation machine 1 according to an exemplary embodiment of the present invention is shown. The illustrated embodiment is similar to that described in connection with Figure 1 discussed embodiment, so that reference is generally made to the relevant explanations.

[0066] Here, only a section of the beverage preparation machine 1 can be seen. On the left, the liquid reservoir 3 can be seen, in which, in this case, a filter cartridge can be seen by way of example. Furthermore, additional operating elements 6 are indicated on the upper edge of the housing 2. The focus here is on the cartridge holder 4 and the hand lever 5. The hand lever 5 is formed integrally with a circumferential collar of the cartridge holder 4 and, in this case, can be pivoted approximately 90° to the right from the illustrated first position on the left into a second position. The first position corresponds to an open position in which a user can insert a cartridge system consisting of a cartridge 10 and the cartridge receptacle 14 connected to it.The second position corresponds to a locked position in which the cartridge system is locked in the cartridge holder 4, so that it can no longer be removed (without damage) from the cartridge holder 4. The manner in which this locking is achieved is explained below, particularly with reference to the . Figures 6-11 explained in more detail.

[0067] The aforementioned angular range of approximately 90°, through which the hand lever 5 can be pivoted, is exemplary. An angular range of 60°, 120°, or 180° is also conceivable. However, an angular range of approximately 90°, in particular between 60° and 120°, is particularly advantageous because in this case the position of the hand lever 5 is easily and directly recognizable by the user, so that the user can advantageously see at a glance whether a locked or unlocked position is present. This can be further reinforced by corresponding markings and / or infographics or symbols on the cartridge holder 4. For example, on the outside of the cartridge holder 4, an unlocked lock is depicted in the area of ​​the first position and a locked lock in the second position.This signals to the user in a known manner, firstly, the current position and, secondly, the position to which the hand lever can be pivoted and / or must be pivoted. An outlet can be seen in the front area on the underside of the cartridge holder 4. This is an optional additional dedicated liquid outlet 9, through which liquid, particularly tempered and / or carbonated, can be dispensed separately and / or in addition to the beverage.

[0068] Furthermore, an actuator element 20 is indicated. This is preferably designed as a rocker arm and, as shown, is located largely within the housing of the cartridge holder 4 and the beverage preparation machine 1. One end of this actuator element 20, which, when activated, actuates a cartridge unloading device of the cartridge receptacle 14, is visible here.

[0069] In the Figures 3 to 5are schematic sectional views of successive steps of a method according to an exemplary embodiment of the present invention. Only a section of the beverage preparation machine 1 with the cartridge holder 4 is shown. The beverage preparation machine 1 can be designed according to the embodiments explained in connection with the preceding figures, for which reason reference is made to the relevant explanations. In addition, Figure 3 The beverage preparation system and its components are explained in detail below.

[0070] Unlike the previously discussed embodiments, an optional identifier detector 25 is additionally provided in the present case. This is arranged, for example, behind a pane transparent to the radiation used in the housing 2 of the beverage preparation machine 1 and is oriented such that it can read a product identification code arranged on an outer side of the cartridge 10 and / or the cartridge receptacle 14. In principle, any type of detector can be used, but an optical sensor and / or an RFID sensor is preferred. Additionally or alternatively, the control device and / or the identifier detector 25 can comprise a communication module for communicating with an external resource, such as a remote server. There, in addition to or alternatively to the product identification code, further and / or supplementary information relating to the beverage substance and / or preparation parameters can be retrieved.Particularly preferably, the control device controls the beverage preparation parameters based on the product identification code determined by the identification detector 25. Such parameters include, for example, parameters relating to the liquid, such as temperature, degree of carbonation, volume, and / or velocity of the liquid flow; parameters relating to the compressed air, such as pressure, volume, and / or velocity of the compressed air; or dynamic parameters, such as the time of liquid and / or compressed air supply or progressions of the aforementioned parameters. Thus, a beverage preparation cycle can, for example, include pauses in the liquid and / or compressed air supply and / or varying pressures and / or volumes over time.

[0071] The cross-section clearly shows the dedicated liquid outlet 9, which is guided around the recess in a substantially semi-toroidal shape. Furthermore, it is indicated that the actuator element 20, which according to the embodiment shown here is also designed as a rocker arm tiltable about a horizontal axis, can be connected to a drive in the beverage preparation machine 1, in particular a motorized drive, which is preferably controllable by the control device.

[0072] The beverage preparation machine 1 further comprises components not shown here for the sake of clarity. For example, the beverage preparation machine 1 comprises a liquid conditioning system. This is arranged downstream of the liquid reservoir 3 and upstream of the cartridge holder 4. Such a liquid conditioning system is intended to condition the liquid before it is fed into the cartridge system, in particular to temper and / or carbonate it.

[0073] The liquid conditioning system comprises, for example, among other things, at least one (hydraulic) pump for transporting the liquid. It is also possible in principle to use multiple pumps, for example connected in parallel, if the required pumping capacity cannot easily be achieved with one pump. A flow meter is preferably assigned to the at least one pump. The flow meter provides the control device with the required measured values ​​to control the pump. The pump preferably pumps the liquid to a temperature control device. In this case, this is, for example, a compression refrigeration machine, which cools the liquid, in particular water, to a perceived pleasant drinking temperature, for example, approximately 3-8°C.Such a compression refrigeration machine comprises, in a known manner, at least one heat exchanger, a compressor, a condenser, and a throttle, in particular a capillary tube and / or an expansion valve. The heat exchanger is preferably designed as an inline heat exchanger, i.e., the liquid is cooled while flowing through the liquid line. Alternatively, the beverage preparation machine 1 can also comprise a container in which the water is tempered.

[0074] In addition, the beverage preparation machine 1 in the present case comprises a carbonation system, which preferably includes, among other things, a carbon dioxide source, in particular in the form of commercially available metal cylinders. These are interchangeably inserted and connected into the beverage preparation machine 1. Since such cylinders are under high pressure, the carbonation system comprises a pressure reduction device downstream of the carbon dioxide source and a dosing device downstream thereof. The dosing device is preferably controllable by the control device and / or by a user and serves to determine the desired degree of carbonation for the liquid.

[0075] Furthermore, the carbonation system preferably comprises a mixing device downstream of the dosing device, which is particularly designed as an inline mixing device, i.e., the carbonation of the liquid occurs while it flows through the liquid line and, in particular, not in a stationary state. The mixing device is preferably arranged downstream of the liquid tempering system, so that already tempered, in particular cooled, liquid is carbonated in the mixing device.

[0076] Here, the beverage preparation machine 1 further comprises a compressed air source. In its simplest form, this can consist of ambient air being drawn in from outside the beverage preparation machine 1, which is then pressurized by a suitable pump. In this case, the (air) pump can also be considered part of the compressed air source. Alternatively or additionally, the beverage preparation machine 1 comprises a connection to an external compressed air supply network, which provides compressed air to the beverage preparation machine 1. Compressed air is supplied from the compressed air source to the cartridge system via the coupling element 21.

[0077] The beverage preparation machine 1 preferably further comprises, in particular downstream of the mixing device and upstream of the coupling element 21, at least one compensator for reducing the pressure of the carbonated liquid, and particularly preferably at least one valve. Such a valve is particularly preferred in conjunction with the additional liquid outlet 9. This advantageously achieves a reliable and controlled dispensing of the liquid, so that the carbonated liquid in particular does not splash upon exit. In particular, a predetermined pressure of the liquid can be set by means of the compensator. The compensator is preferably provided in a controllable manner for this purpose. The compensator is particularly preferably adjusted at the factory, i.e. during manufacture of the beverage preparation machine; alternatively or additionally, the compensator can be adjusted by a user and / or the control device.For example, such a compensator comprises a substantially conically shaped line section in which a longitudinally displaceable conical insert is arranged. By adjusting the conical insert, the gap between the insert and the line is changed, thereby changing the pressure accordingly. Such a compensator is an inline compensator. The pressure upstream of the compensator is preferably 6-14 bar, more preferably 8-12 bar, especially 10 bar, and downstream of the compensator, the pressure most preferably corresponds essentially to the ambient pressure, i.e., approximately 1 bar.For further details on the compensator and / or the valve, reference is made to the applicant's parallel application entitled "Beverage preparation machine with a liquid outlet and beverage preparation system" of the same filing date, the disclosure of which with regard to the compensator and a possible valve is hereby incorporated by reference and the disclosure of which is incorporated into the present disclosure.

[0078] Shown in Figure 3The state shortly after inserting the cartridge system into the cartridge holder 4. The cartridge system consists of a cartridge 10 comprising a side wall and a base region, which together define a cavity serving as a reservoir 11 for a beverage substance, in particular a liquid one. The side wall can have essentially any cross-section. However, a square or a (circular) round cross-section is preferred. The cartridge 10 further comprises a cartridge neck that encloses a cartridge opening. The cartridge opening is sealed airtight and / or liquid-tight by a sealing element 13, preferably a sealing film, for example a single- or multi-layer membrane made of a plastic material and / or a metallic material such as aluminum or an aluminum alloy. The beverage substance is thus enclosed in the reservoir up to an opening of the sealing element 13.The cartridge 10 is preferably made of a plastic material, for example by injection molding or blow molding. The same particularly preferably applies to the cartridge receptacle 14.

[0079] Preferably, the cartridge neck has a smaller diameter than the side wall, thus representing a constriction. Furthermore, it is preferred if the cartridge neck and / or the cartridge opening comprises at least one flange 12, particularly preferably two vertically spaced flanges. In particular, it is provided that the sealing element 13 is connected to at least one flange 12, in particular by a material bond. For example, the sealing element 13 can be sealed to a flange 12 circumferentially surrounding the cartridge opening.

[0080] In the area of ​​the cartridge neck, a connecting area is provided, via which the cartridge 10 is connected to a cartridge receptacle 14, which is in particular substantially cap-shaped, in a form-fitting, force-fitting and / or material-fitting manner and in particular in a rotationally fixed manner.

[0081] Preferably, the cartridge receptacle 14 is clipped, for example, to the at least one circumferential flange 12. An embodiment is shown here purely by way of example, according to which the cartridge 10 has two essentially identical, but vertically spaced-apart flanges 12. The cartridge receptacle 14 is connected, in particular, to the lower flange 12 in the drawing in a force-locking and / or form-locking manner. The second flange 12 cooperates in a locking manner with a locking means 8 in a manner to be explained below.

[0082] The cartridge receptacle 14 has a mixing chamber and at least one liquid supply opening 19, wherein the liquid supplied via the liquid supply opening 19 by the beverage preparation machine 1, in particular a carbonated and / or cooled liquid, mixes in the mixing chamber with the beverage substance from the reservoir 11. The mixing creates a (mixed or blended) beverage, which is then dispensed through a beverage outlet 15 of the cartridge receptacle 14 directly into a drinking vessel arranged below. As a result, the beverage does not touch any components of the beverage preparation machine 1, thereby avoiding any cross-contamination in a particularly hygienic manner. Optionally, the cartridge receptacle 14 also has a dedicated gas outlet to discharge gas released during mixing from the cartridge receptacle 14.

[0083] The cartridge receptacle 14 further comprises at least one cartridge unloading device. In the present case, this is embodied, for example, as a piercing mandrel 16 mounted vertically displaceably in a mandrel guide. The piercing mandrel 16 is preferably formed as a plastic part and particularly preferably as a plastic injection-molded part. The piercing mandrel 16 can be moved from a retracted position to an extended position by an actuator element 20 of the beverage preparation machine 1. In the extended position, it pierces the sealing element 13 and thus ensures a fluidic connection between the reservoir 11 and the mixing chamber.The beverage preparation machine 1 and in particular the control device thus determines the time of beverage preparation since, on the one hand, it initiates the supply of liquid into the mixing chamber and, on the other hand, activates the actuator element which actuates the cartridge unloading device and thus ensures that the beverage substance is transferred from the reservoir 11 into the mixing chamber.

[0084] To assist in transferring the beverage substance, the piercing mandrel 16 has an internal compressed air line 17. The cartridge receptacle 14 here has a compressed air supply opening 18 below the liquid supply opening 19. Thus, when the cartridge receptacle 14 is correctly positioned in the cartridge holder 4, the cartridge receptacle 14 couples to the beverage preparation machine 1 in such a way that the latter can introduce liquid into the mixing chamber through the liquid supply opening 19 and can provide compressed air at the compressed air supply opening 18. In particular, only in the extended position of the piercing mandrel 16 is the compressed air line 17 aligned directly or indirectly, for example via a compressed air line provided in the cartridge receptacle 14, with the compressed air supply opening 18.At the end of the piercing mandrel 16 projecting in the direction of the cartridge 10, the latter has a compressed air outlet which, in the extended position, projects in particular into the reservoir 11.

[0085] According to a particularly preferred embodiment, the piercing mandrel 16 has recesses on its outer side, in particular channel-like recesses, which extend substantially vertically according to the orientation shown here. The beverage substance can flow from the reservoir 11 into the mixing chamber via these recesses as soon as the sealing element 13 is pierced. For example, the channel-like recesses are designed in the form of grooves open on one side, wherein the cross-section and / or the number of recesses is preferably adapted to the viscosity of the beverage substance.

[0086] In order to ensure that liquid and compressed air can be supplied safely and reliably to the cartridge holder 14, the beverage preparation machine 1 comprises, according to the invention, a coupling element 21 which can be transferred from a retracted position, which is shown here, into an extended position (cf. Figure 4 ). In the extended position, the coupling element 21 establishes a fluid-tight coupling between the liquid conditioning system of the beverage preparation machine 1 and the liquid supply opening 19 of the cartridge receptacle 14. The fact that the coupling element 21 is spaced apart from the cartridge receptacle 14 in the retracted position ensures that the coupling element 21 is not damaged when inserting the cartridge system. Furthermore, a fluid-tight coupling is ensured by moving the coupling element 21 into the extended position.

[0087] Preferably, the coupling element 21 has a sealing means 24, which here is formed, for example, as an elastic material, for example a silicone-containing material, in the region of the tip of the coupling element 21, in particular at least in the region in which contact with the cartridge receptacle 14 occurs. This advantageously further improves the fluid tightness between the coupling element 21 and the cartridge receptacle 14.

[0088] According to the preferred embodiment illustrated here, the coupling element 21 is a rigid element which internally comprises a liquid line 22, in particular a one-piece design, and a compressed air line 23, in particular a one-piece design. These lines are arranged at an angle to one another, with the compressed air line 23 running essentially horizontally. It is generally preferred for the liquid line 22 to slope slightly downwards in the direction of flow, as this facilitates the complete discharge of the liquid and thus advantageously prevents dripping from the beverage preparation machine 1. Those skilled in the art will immediately understand that this is not necessary for the compressed air line 23.Nevertheless, the precise arrangement of the liquid line 22 and / or the compressed air line 23 depends primarily on the arrangement of the fluid-carrying components in the beverage preparation machine 1. Furthermore, those skilled in the art will understand that, for example, a line that is at least partially flexible is provided between a compressed air source of the beverage preparation machine 1 and the compressed air line 23 of the coupling element 21 and / or between the liquid conditioning system and the liquid line 22 of the coupling element 21 in order to compensate for the movement of the coupling element 21 between the retracted position and the extended position.

[0089] In Figure 3 As already explained, the cartridge system is inserted into the cartridge holder 4 in the correct orientation, but is not yet locked. The piercing mandrel 16 is still in the retracted position, as is the coupling element 21.

[0090] In Figure 4 a user has now pivoted the hand lever 5, which here is formed in one piece with an element surrounding the cartridge holder 4 in a flange-like manner, from the first position about the vertical axis of rotation running parallel to the longitudinal axis of the cartridge into the second position, for example by approximately 90°. Figures 6-13By means of the slotted guide 27, which will be explained in more detail below, three hook-like locking means 8 are pivoted in the direction of the recess, i.e. radially inwards, such that they engage above the flange 12 of the cartridge 10 and thereby lock the cartridge 10 in a form-fitting and / or force-fitting manner in the cartridge holder 4. The three locking means 8 are preferably of identical design and arranged evenly along the circumference of the recess. The upper end of the locking means 8 is of hook-like design, in particular rounded. At least one locking means 8 is provided according to the invention, but a greater number, such as three here, improves the locking, so that even greater forces can be absorbed. This prevents the user from removing the cartridge system from the cartridge holder while the beverage is being prepared, i.e. when the locking means 8 is in the locked position.Particularly preferably, the locking means 8 have at least one predetermined breaking point, so that accidental premature removal of the cartridge system is prevented, but forced removal is possible to avoid damage to the beverage preparation machine 1. The slotted guide makes it easy to actuate all locking means 8 simultaneously.

[0091] The locking means 8 are preferably biased outwardly at their lower end, i.e., toward the unlocked position, by a spring 28. This means that as soon as the user moves the hand lever 5 back toward the first position, the locking means 8 slide back into the unlocked position along the guide rail 27 by the spring 28.

[0092] Furthermore, it is preferred if the coupling element 21 is also pretensioned into the extended position by means of a spring 28', wherein the coupling element 21 is guided by a further slotted guide 27', which is most preferably not identical to the slotted guide 27 assigned to the locking means 8, but in particular is designed as a single piece therewith. By moving the hand lever 5 from the first to the second position, the locking means 8 are advantageously simultaneously moved into the locked position and the coupling element 21, assisted by the spring 28', is moved into the extended position. Conversely, when the cartridge holder 4 is unlocked, by pivoting the hand lever 5 from the second position to the first position, the locking means 8, assisted by the springs 28, are moved into the unlocked position and the coupling element 21 is moved into the retracted position.

[0093] In Figure 4 This means that both the locking means 8 are in the locked position and the coupling element 21 is in the extended position. The liquid line 22 of the coupling element 21 is aligned with the liquid supply opening 19 of the cartridge holder 14 and is connected to it in a liquid-tight manner by the sealing means 24. Similarly, the compressed air line 23 of the coupling element 21 is aligned with the compressed air supply opening 18 of the cartridge holder 14 and is connected to it in an airtight manner by the sealing means 24. Preferably, compressed air is already present in this position. However, since the piercing mandrel 16 is in the retracted position, the compressed air does not yet enter the compressed air line 17 and consequently does not exit the compressed air outlet opening of the piercing mandrel 16. The beverage preparation machine 1 is ready for beverage preparation in the position shown here.

[0094] In Figure 5The state immediately after beverage preparation is now shown. The control device has preferably previously activated a drive that actuates the actuator element 20. This pivots it about the fixed horizontal tilt axis, so that an end, particularly designed as a plunger, contacts the piercing mandrel 16 and moves it upwards in the mandrel guide into the extended position. On the way to the extended position, the piercing mandrel 16 pierces the sealing element 13, and the beverage substance begins to flow between the piercing mandrel 16 and the sealing element 13, particularly via the above-mentioned, optional channels of the piercing mandrel 16, into the mixing chamber. As soon as the piercing mandrel 16 has assumed the extended position, the compressed air line 17 integrated into the piercing mandrel 16 is aligned with the compressed air supply opening 18 or the compressed air line of the cartridge holder 14 arranged therebetween.The compressed air is now introduced through the piercing mandrel 16 into the reservoir 11, where it prevents the development of a vacuum and simultaneously supports the transfer of the, under certain circumstances, highly viscous beverage substance from the reservoir 11 into the mixing chamber. The flow of the beverage substance into the mixing chamber can therefore be accelerated and / or specifically controlled by the compressed air. For example, the pressure in the cartridge 10 or the reservoir 11, and thus the volume flow of the beverage substance, can be adapted to the volume flow of the liquid in order to optimize beverage formation. This can be of particular interest when the volume flow of the liquid is specifically controlled or regulated in order to influence foam formation. The volume flow of the beverage substance is then preferably adapted to the volume flow of the liquid.In the mixing chamber, the beverage substance mixes with the liquid, especially the cooled and carbonated liquid, to form the beverage. This beverage exits via the beverage outlet 15 into the drinking vessel located below.

[0095] Optionally, liquid, in particular tempered and / or carbonated liquid, can be added to the drinking vessel via the liquid outlet 9 before, during, after, and / or instead of the beverage preparation. This can be advantageous if, for example, a user desires a more diluted beverage, different from a beverage preparation stored in the beverage preparation machine 1, or the user wishes to receive only chilled and / or carbonated liquid.

[0096] After the beverage has been prepared, the user can return the hand lever 5 to the first position. The springs 28 then lock the locking means 8, as shown in Figure 5As shown, guided by the slotted guide 27, it is moved back into the unlocked position. Deviating from the illustration chosen here, the coupling element 21 is preferably also moved into the retracted position by the slotted guide 27' at the same time.

[0097] The cartridge system is now empty and can be removed from the cartridge holder 4. The beverage preparation machine 1 is now ready for a new beverage preparation cycle.

[0098] In Figure 61 shows a perspective detailed view of a cartridge holder 4 according to an exemplary embodiment of the present invention. A horizontal section is shown. The embodiment shown here essentially corresponds to the previously explained embodiments, which is why reference is made to the relevant explanations. On the left, the hand lever 5 can be seen, which is integrally connected to a collar-like element that forms the upper end of the cartridge holder 4. Preferably, the slotted guide 27 is also formed integrally with this element and thus with the hand lever 5. This simplifies the structure, since only one element is required and no deflection mechanism is needed to transfer the movement from the hand lever 5 to the slotted guide 27.

[0099] The slotted guide 27 has several sections. A curved section of the slotted guide 27 is visible on the right edge of the image, which interacts with the locking means 8. In the center of the image, a simple guide is visible, which interacts with a stop 26 of the cartridge holder 4 to limit the movement of the hand lever 5 and / or the slotted guide 27. The stop 26 is designed here, for example, as a pin formed integrally with the cartridge holder. It forms a stop for the guide of the slotted guide 27, so that further rotation about the vertical axis of rotation is not possible, wherein the position of the hand lever 5, when the stop 26 limits the rotation, corresponds to the first or second position. The stop 26 therefore defines the first and second positions.Since the forces are absorbed by the stop means 26, damage to the locking means 8 due to excessive force is avoided.

[0100] In Figure 7 A schematic top view of a cartridge holder 4 according to an exemplary embodiment of the present invention is shown. The embodiment shown here essentially corresponds to the previously explained embodiments, for which reason reference is made to the relevant explanations. Here, in particular, the top view of the Figure 6shown detailed section. It is clearly visible how the slotted guide 27 is designed as one piece with the hand lever 5. Guides for one or more similar stop means 26 are provided on the outside, while the guide for the locking means 8 is arranged on the inside. As can be seen from the illustration, the guides have a certain dead zone, i.e. a distance over which there is no change in the position of the locking means 8. This is helpful to prevent the cartridge holder 4 from blocking the insertion or removal of a cartridge system even with small movements and / or incorrect positioning of the hand lever 5.

[0101] In the center of the cartridge holder 4, a cartridge 10 of an inserted cartridge system is visible. This cartridge has a side wall with a substantially circular cross-section, although the side wall is flattened on one side, here the right side in the illustration. This asymmetry is preferably also present in the cartridge receptacle 14 and in particular also in the inner wall of the recess of the cartridge holder 4. This provides a guide that ensures that the cartridge system, and in particular the liquid supply opening 19 and the compressed air supply opening 18 of the cartridge receptacle 14, are correctly oriented after insertion. This ensures a successful and reproducible coupling with the coupling element 21.

[0102] In the Figures 8 and 9are sectional views in different horizontal planes of a cartridge holder 4 in the first position. Figures 10 and 11 Corresponding sectional views are shown in the different horizontal planes of the cartridge holder 4 in the second position. The illustrated embodiment of the cartridge holder 4 corresponds to the Figures 8-11 essentially the previously explained embodiments, which is why reference is made to the relevant explanations.

[0103] In Figure 8 , a schematic plan view of a cartridge holder 4 with an operating element, here a hand lever 5, in the first position according to an exemplary embodiment of the present invention is shown. The section plane shown here is particularly lower than that shown in FIG. Figure 9 .Firstly, the contours of the slotted guide 27 interacting with the three locking means 8 are shown here. Even if this is not apparent from the present drawing, the slotted guide 27 is integrally connected to the hand lever 5 in the manner described above. The hand lever 5 is in the first position here. According to the embodiment shown here, the first position is reached with respect to the orientation shown at an angular position of the hand lever 5 of approximately 220°. This is advantageous because, on the one hand, the hand lever 5 is easily accessible for a user who is usually positioned in front of the beverage preparation machine 1, and, on the other hand, the first position is clearly visible.

[0104] Furthermore, at the top of the Figure 8the coupling element 21 is shown. This has a projection 30 on its upper side, which interacts with a contour of a further slotted guide 27' and thus holds the coupling element 21 in the retracted position against the spring force of a spring 28' arranged in particular on the underside of the coupling element 21. It is particularly advantageous if the slotted guide 27' for the coupling element 21 is formed integrally with the slotted guide 27 for the locking means 8. This is also provided according to the embodiment shown here. In the right-hand part of the figure, it can be seen that the contours of the slotted guides 27, 27' converge.

[0105] Furthermore, a limit switch 29 is provided in the right-hand area of ​​the cartridge holder 4, which determines the relative position of the slotted guides 27, 27' and / or the hand lever 5 via the associated collar-like element. This relative position can then be transmitted to the control device. This determined position can, for example, be used to ensure that the control device only enables beverage preparation when the limit switch 29 detects that the hand lever 5 is in the second position.

[0106] In Figure 8Furthermore, the sealing means 24 can be clearly seen, which here is designed as an elastic covering of the coupling element 21. The sealing means 24 preferably comprises a material that is hygienically safe and approved for food preparation. The drawing also shows the projection in the drawing plane of the previously explained stop means 26. The locking means 8 also border on a stop of the contour of the slotted guide 27. However, to prevent the locking means 8 from being damaged or jammed, a stop is formed by the stop means 26 and a corresponding guide in the slotted guide 27. The forces are thus introduced into the cartridge holder 4 via the stop means 26.

[0107] The representation of the Figure 9 now essentially corresponds to that of Figure 8 ,However, a different, horizontal, cutting plane is chosen. In particular, the cutting plane chosen here lies above that of Figure 8 . As in connection with Figure 8 As explained above, the projection 30 of the coupling element 21 interacts with a contour of a further slotted guide 27', which may well be formed integrally with the slotted guide 27. In particular, however, the projection does not interact with the guide which forms a stop for the stop means 26, even if this is Figure 9 This illustration clearly shows the one-piece design of hand lever 5 and guide rail 27. This is particularly advantageous, as only one moving component is required.

[0108] Figure 10 now shows the cartridge holder 4 of the Figures 8 and 9in the second position, which corresponds to the locked position of the locking means 8. The locking means 8 have been moved into the locked position by the contour of the slotted guide 27, counter to the spring force exerted by the spring 28 at their base, where they are connected to the cartridge holder 4 so as to be pivotable about a horizontal axis of rotation. At the same time, the contour of the further slotted guide 27' has cleared the path for the coupling element 21, so that the latter is moved into the extended position by the spring 28 arranged on the underside, in particular a spiral spring, and thereby couples with the cartridge holder 14. To clarify these paths, Figure 10Both the coupling element 21 and the locking means 8 are still shown in the unlocked or retracted position. However, those skilled in the art will understand which position is actually assumed. However, the chosen representation advantageously allows the adjustment path of the coupling element 21 and the locking means 8 to be recognized.

[0109] In Figure 11 is like in Figure 10 a schematic plan view of a cartridge holder 4 with the hand lever 5 in the second position according to an exemplary embodiment of the present invention. As shown in Figure 10The representation of the coupling element 21 and the locking means 8 is decoupled from the position of the hand lever. The person skilled in the art will understand that the coupling element 21 in the second position is actually moved further radially into the center of the recess and the rear surfaces of the upper region of the hook-like locking means 8 rest against the inside of the guide rail 27. As shown in Figure 8 The stop means 26 forms a stop for the guide rail 27, so that the second position is defined as the end position. This can be detected accordingly by the limit switch 29.

[0110] In Figure 12A perspective detailed view of a cartridge holder 4 according to an exemplary embodiment of the present invention is shown. The illustrated embodiment essentially corresponds to the previously described embodiments, so reference is made to the preceding explanations. To make the internal components visible, an outer housing of the cartridge holder 4 is shown here, as shown, for example, in Figure 2shown, not illustrated. The structure of the collar-like element connected to the hand lever 5 can be seen. This collar-like element serves as the upper end of the cartridge holder 4 and is pivotable relative to the latter between the first and second positions, which are defined as end positions by the at least one stop means 26. The hand lever, on the one hand, and the slotted guides 27, 27' and the guide for the stop means 26, on the other hand, are formed in one piece with this element. It can be seen from the drawing that the element is designed differently at different heights, with, for example, the plane of the slotted guide 27 interacting with the locking means 8 being higher than the plane of the slotted guide 27' interacting with the coupling element 21.

[0111] In this illustration, the design of the coupling element 21 is clearly visible, including the projection 30 formed on the top. Furthermore, it can be seen that the spring 28' is arranged around the compressed air line 23, which is particularly space-saving. The compressed air line 23 and the liquid line 22 are formed integrally in the coupling element 21, wherein the coupling element 21 is made, for example, from a plastic material. Furthermore, the sealing means 24, which is arranged at the tip of the coupling element 21, is clearly visible. In the areas of the coupling element 21 intended for contact with the cartridge receptacle 14, the sealing means 24 and / or the coupling element 21 are rounded in order to achieve a flexible and secure coupling. The embodiment of the coupling element 21 shown here remotely resembles a gun barrel.

[0112] In Figure 13is a schematic plan view of a cartridge holder 4 according to an exemplary embodiment of the present invention, wherein the representation in particular of a plan view and a cross section in a horizontal cross section of the embodiment from Figure 12 In particular, the embodiment shown essentially corresponds to that of Figure 10 , For this reason, reference is made to the relevant explanations, although here the coupling element 21 is shown in the correct, extended position. List of reference symbols

[0113] 1 Beverage preparation machine 2 Housing 3 Liquid reservoir 4 Cartridge holder 5 Hand lever 6 Additional operating elements 7 Storage area 8 Locking means 9 Additional liquid outlet 10 Cartridge 11 Reservoir 12 Flange 13 Sealing element 14 Cartridge receptacle 15 Beverage outlet 16 Piercing mandrel 17 Compressed air line (of the piercing mandrel) 18 Compressed air supply opening 19 Liquid supply opening 20 Actuator element 21 Coupling element 22 Liquid line (of the coupling element) 23 Compressed air line (of the coupling element) 24 Sealing means 25 Identification detector 26 Stop means 27, 27' Slide guide 28, 28' Spring 29 Limit switch 30 Projection

Claims

1. Beverage preparation machine (1), in particular dispenser, for preparing a beverage by means of a cartridge system consisting of a cartridge (10), which has a beverage substance in a reservoir (11), and a cartridge receptacle (14), which is connected to the cartridge (10) and has at least one liquid supply opening (19), a mixing chamber and a beverage outlet (15), wherein the beverage preparation machine (1) comprises a cartridge holder (4), in particular of balcony-like design, wherein the cartridge system can be inserted into the cartridge holder (4), wherein the beverage preparation machine (1) comprises a liquid reservoir (3), a liquid conditioning system for conditioning a liquid from the liquid reservoir (3), a coupling element (21) for selective coupling between the liquid conditioning system and the liquid supply opening (19) of the cartridge receptacle (14), and a control apparatus for controlling the beverage preparation machine (1), wherein the coupling element (21) has at least one liquid line (22), characterized in that the cartridge holder (4) has at least one locking means (8), which is intended to reversibly lock the cartridge system in the cartridge holder (4), wherein the locking means (8) can be reversibly transferred from an unlocked position into a locked position, wherein the locking means (8) interacts with the cartridge system with a form fit and / or force fit in the locked position.

2. Beverage preparation machine (1) according to Claim 1, characterized in that the coupling element (21) can be transferred from a retracted position into an extended position, wherein, in the extended position, there is an, in particular tight, fluid connection between the liquid supply opening (19) of the cartridge receptacle (14) and the liquid line (22) of the coupling element (21).

3. Beverage preparation machine (1) according to either of the preceding claims, characterized in that the locking means (8) is designed to be rotatable about an, in particular horizontally arranged, axis.

4. Beverage preparation machine (1) according to one of the preceding claims, characterized in that the at least one locking means (8) is designed to be hook-shaped, at least in certain portions, wherein the hook-shaped portion is intended to lockingly interact with a portion of the cartridge system, in particular a flange (12) of the cartridge (10).

5. Beverage preparation machine (1) according to one of the preceding claims, characterized in that the beverage preparation machine (1), in particular the cartridge holder (4), has an operating element, in particular a hand lever (5), wherein the operating element can be adjusted between a first position and a second position, wherein when the operating element is in the first position, the locking means (8) is in the unlocked position and when the operating element is in the second position, the locking means (8) is in the locked position, wherein the operating element is configured in such a manner that in the case of adjustment from the first position into the second position, the locking means (8) is transferred from the unlocked position into the locked position.

6. Beverage preparation machine (1) according to Claim 5, characterized in that the operating element is rotatable, preferably within an angular range of 10 to 180 degrees, particularly preferably within an angular range of 40-120 degrees, very particularly preferably within an angular range of approximately 90 degrees, about a vertical axis, which in particular runs centrally through the recess in the cartridge holder (4).

7. Beverage preparation machine (1) according to either of Claims 5 and 6, characterized in that the operating element is connected, in particular integrally, to a slotted guide (27), wherein the slotted guide (27) is designed, in the case of adjustment, in particular rotation about the vertical axis, to transfer the locking means (8) from the unlocked position into the locked position.

8. Beverage preparation machine (1) according to one of the preceding claims, characterized in that the beverage preparation machine (1) comprises a compressed-air source, wherein the compressed-air source is configured to supply compressed air to the cartridge system, in particular to a compressed-air supply opening (18) of the cartridge receptacle (14), wherein the coupling element (21) is furthermore configured for selective coupling between the compressed-air source and the compressed-air supply opening (18) of the cartridge receptacle (14), wherein the coupling element (21) has a compressed-air line (23).

9. Beverage preparation machine (1) according to at least Claims 2 and 8, characterized in that, in the extended position, there is an, in particular tight, fluid connection between the compressed-air supply opening (18) of the cartridge receptacle (14) and the compressed-air line (23) of the coupling element (21), wherein in particular the coupling element (21) has, at least in a region intended for making contact with the cartridge receptacle (14), a sealing means (24), wherein the sealing means (24) comprises an at least partially elastic material, in particular an elastic plastics material.

10. Beverage preparation machine (1) according to one of Claims 5 to 7, characterized in that the beverage preparation machine (1), in particular the control apparatus, is configured in such a manner that it is only possible to prepare a beverage, in particular to supply liquid and / or to supply compressed air by way of the coupling element (21), when the operating element is in the second position and / or the locking means (8) is in the locked position.

11. Beverage preparation system having a beverage preparation machine (1) according to one of the preceding claims and a cartridge system, wherein the cartridge system for beverage preparation can be inserted into the cartridge holder (4) of the beverage preparation machine (1), wherein the cartridge system comprises a cartridge (10), which comprises a reservoir (11) filled with a beverage substance, and a cartridge receptacle (14), which can be connected to the cartridge (10) in a connecting region, wherein the cartridge (10) has a cartridge opening, wherein the cartridge opening is closed using a sealing element (13), in particular a sealing film, wherein the sealing element (13) seals the reservoir (11) off from the cartridge receptacle (14) in a fluid-tight manner, wherein the cartridge receptacle (14) has a mixing chamber, which can be connected to the reservoir (11), and a liquid supply opening (19), which opens into the mixing chamber, for coupling to the liquid line (22) of the coupling element (21), so that a liquid can be introduced into the mixing chamber, wherein the cartridge receptacle (14) has a cartridge discharge device for transferring the beverage substance from the reservoir (11) into the mixing chamber, wherein the cartridge receptacle (14) has a beverage outlet (15) for discharging a beverage, which has been produced by mixing the liquid with the beverage substance, from the mixing chamber.

12. Beverage preparation system according to Claim 11, characterized in that the cartridge discharge device comprises a spike guide and a piercing spike (16), which is mounted so as to be displaceable, in particular in one direction, within the spike guide, wherein the piercing spike (16) can be displaced between a retracted position, in which the piercing spike (16) is spaced apart from the sealing element (13), and an extended position, in which the piercing spike (16) pierces the sealing element (13) and projects into the reservoir (11), by way of an actuator element (20) of the beverage preparation machine (1), wherein the beverage preparation machine (1) comprises an, in particular motorized, drive for the actuator element (20).

13. Beverage preparation system according to either of Claims 11 and 12, characterized in that the cartridge receptacle (14), in particular the cartridge discharge device, comprises a compressed-air supply opening (18) for coupling to the compressed-air line (23) of the coupling element (21), a compressed-air outlet and a compressed-air line (17), which extends from the compressed-air supply opening (18) to the compressed-air outlet, wherein the coupling element (21) is designed to introduce compressed air from the compressed-air source of the beverage preparation machine (1) through the compressed-air supply opening (18) into the compressed-air line (17), wherein the compressed-air line (17) is preferably integrated in the piercing spike (16), wherein the cartridge discharge device is particularly preferably designed in such a manner that when the piercing spike (16) is in the extended position, the beverage substance can be transferred from the reservoir (11) into the mixing chamber by way of the compressed air.

14. Method for preparing a beverage using a beverage preparation system according to one of Claims 11 to 13, characterized by the following steps: - inserting a cartridge system consisting of a cartridge (10) and a cartridge receptacle (14) into the cartridge holder (4), - transferring the locking means (8) from the unlocked position into the locked position, - transferring the coupling element (21) from the retracted position into the extended position in order to establish a connection between the liquid line (22) of the coupling element (21) and the liquid supply opening (19) of the cartridge receptacle (14) and preferably in order to establish a connection between the compressed-air line (23) of the coupling element (21) and the compressed-air supply opening (18) of the cartridge receptacle (14), - transferring the beverage substance from the reservoir (11) of the cartridge (10) into the mixing chamber of the cartridge receptacle (14), in particular by feeding compressed air into the reservoir (11), - introducing a liquid into the mixing chamber of the cartridge receptacle (14) by way of the coupling element (21), - discharging the beverage, which has been produced in the mixing chamber by mixing the beverage substance with the liquid, through the beverage outlet (15).

15. Method according to Claim 14, wherein the step of transferring the beverage substance from the reservoir (11) of the cartridge (10) into the mixing chamber of the cartridge receptacle (14) comprises actuation of the cartridge discharge device, in particular by transferring the piercing spike (16) from the retracted position into the extended position, as a result of which the sealing element (13) is perforated.