Adapter for a water pistol or any water dispenser device with a water outlet

Abstract

Adapter (1) for a water gun (6) or for any water dispenser device with a water outlet, comprising: - a capsule receiving chamber (2) designed to receive a capsule (12) containing a substance for preparing a hot beverage, - a power source (3), - a lid (13) capable of sealing the capsule receiving chamber (2) airtight, - a fluid line (4) connecting the lid (13) and the nozzle (9) of the water gun (6) or the water outlet, characterized in that it includes at least: - a coupling element (5) designed for connecting the fluid line (4) to the nozzle (9) of the water gun (6) or the water outlet, - a shut-off valve (18) allowing water flow in only one direction, from the water gun (6) or the water outlet to the adapter (1), - a heating element (15, 48),which is designed in the form of a ceramic pin or a metal bolt, or is constructed as a hollow cylinder and is equipped with a tip and a cannula or a water tube inside, which is directly coupled to the fluid line (4), which is coupled to the lid (13) of the adapter (1), which, when the lid (13) is closed, pierces the capsule (12) and injects the water from the water gun (6) or the water outlet into the capsule (12), - an electronic control (34) or a switch for current control in the heating element (15, 48), - has a drain opening through which the capsule contents can flow into a cup (21).

Description

The invention is an adapter which can accommodate coffee capsule and is connectable to a water gun at its nozzle whereby the water pressure from the water gun is used for the preparation of hot beverage in a non-efficient manner. The beverage is brewingd directly in the capsule by a heating element incorporated therein. The coffee, for example, is also poured from the capsule directly into the cup without any intermediate paths.There are numerous capsule machines which use the capsules for the coffee or espresso preparation. A small amount of coffee powder (about 5-6 grams) is present in the capsules. A filter is also integrated there, which filters the coffee as it flows through. The capsule is pierced at several locations during preparation in the machine and hot water flows in on one side, while the coffee flows out of the other side. There are, however, also capsules in which the water-coffee mixture is already soaked. The coffee flow comes first in a hopper, then it is passed through a vessel in half-pipe form up to the cup. Unfortunately, these bypasses cool the coffee to a greater or lesser extent, so that the first coffee is usually slightly cooler than, for example, the following coffee if a second capsule is to be prepared immediately thereafter.WO 2013 / 110203 A1 relates to coffee and beverage machines and to methods for preparing hygienically pure and trouble-free beverages. This is also to be achieved in locations without city water connection or in locations where tap water for beverages and the flushing of the integrated water container is only difficult to access. According to the invention, the beverage or coffee water is taken directly from commercially available disposable water bottles by the beverage machine via a pump. The commercially available disposable containers contain hygienically packaged high-quality mineral water, are securely closed by rotary closure covers and are available in the form of PET or glass bottles, cardboards or plastic bags with a volume of 0.3 to 2 litres. Should the contents of the disposable container have been used up by the machine or the water quality have to be changed, a new disposable water container with correspondingly packaged water is used directly. The disposable water container is received directly by the machine by means of a coupling device with container connection piece and a machine connection piece with a nonreturn valve, which can be released by an unlocking device in the water introduction device of the machine.EP 3 695 755 B1 describes a refrigerator comprising a housing, a door of the housing openably connected to the housing, and a water dispenser provided on the door, the water dispenser comprising a water tank, a drain path connected to the water tank and a dispenser for the user for removing the beverage, the beverage preparation chamber being connected to the dispenser, characterized in that the water dispenser further comprises a beverage preparation chamber provided at an end of the drain path remote from the water tank and an integration module provided between the water tank and the beverage preparation chamber, the beverage preparation chamber being connected to the dispenser, the integration module comprising a water pump and a heating device, the water dispenser is integrally embedded in the door of the refrigerator, and a foam layer is provided in the door of the refrigerator to isolate the cooling compartment, and the water dispenser is provided between the surface of the door and the foam layer to prevent the water tank from being too cold, the water dispenser further including a first selector and a second selector, the first selector being provided between the heater and the beverage production chamber to selectively control introduction of the water heated by the heater, either introduced into the beverage production chamber or flowing directly out of the hot water outlet provided at the dispenser, the water pump being provided between the water tank and the heater to pressurize the drinking water, the second selector being connected between the water pump and the heater to selectively control, whether the water pressurized by the water pump is introduced either directly into the beverage production chamber or into the heating device.WO 2021 / 176201 A1 describes a tap water summary. A faucet connectable to the power grid, comprising a water supply inlet, a faucet outlet and a flow regulator for regulating the flow of water through the faucet from the water supply inlet to the faucet outlet. The faucet also includes a beverage preparation portion having an inlet, a cavity portion having a closable access opening therein, and an outlet. The inlet is in fluid communication with the outlet via the cavity portion, and the closable access opening provides access to the cavity to enable the introduction or removal of beverage ingredients.US 2017 / 0065121 A1 describes systems and methods for the controlled production of liquid foods or beverages. Disclosed are systems and methods for controlling the production of liquid food or beverage products. A dispenser for making a liquid food or beverage product from a frozen content in a container includes a chamber configured to receive the container and a non-diluting heater configured to heat the container and / or the frozen content in the container; the non-diluting heater does not add liquid to the interior of the container. The dispenser also includes a container configured to contain a liquid. The reservoir includes a reservoir outlet configured to draw liquid from the reservoir. The dispenser further comprises a product outlet configured to remove a liquid food or beverage product from the container, and a controller that causes the dispenser to selectively perform at least one of: heating the container and / or the frozen content using the heater; and removing liquid from the container through the container outlet.DE 603 16 426 T2 relates to a method for dispensing beverages from capsules to be extracted under pressure and containing a substance for the production of a food product such as a beverage. The apparatus is suitable for selectively dispensing different beverages with different foam quantities by injection of a pressurized liquid into a capsule containing a beverage forming substance, the apparatus comprising capsules having a chamber containing the substance and a beverage dispensing arrangement adapted to accumulate a certain extraction pressure in the chamber.DE 10 2012 105 791 A1 relates to a portion capsule for producing a beverage, having a capsule body with a capsule base and a lid, wherein a cavity is formed between the capsule base and the lid, in which cavity a beverage substrate is provided, and which cavity has a machine-detectable identifier which makes it possible to individualize the respective portion capsule. Furthermore, the present invention relates to the use of the portion capsule for producing a beverage.U.S. Pat. No. 5,325,765 A discloses a filter cartridge in which the coffee powder is accommodated in a filter bag within the cartridge. The outer shell of the cartridge is made of a water-impermeable material, while the filter bag consists of a water-permeable material. The filter bag has a downwardly conically tapering shape, so that a chamber is formed in the lower region of the filter cartridge between the outer casing and the filter bag.For extracting the coffee powder, the cartridge is pierced on both sides by an upper and a lower piercing device.The invention EP 1 554 958 B1 relates to coffee machine for brewing powder coffee packaged in a capsule. The coffee machines of the type in question here are predominantly used in the household. Compared to conventional coffee machines provided with a grinding mechanism for grinding the coffee beans, a basic advantage of the coffee machines mentioned here is that a high-quality coffee beverage can be scalded by the use of capsules, especially since the coffee powder has an optimum degree of grinding and is packed in the capsules in an airtight manner. In addition, the coffee machines are subject to relatively little contamination by coffee powder.The invention EP 2 476 633 B1 relates to a capsule, a system and a method for preparing a beverage. Here, the stiffening region is arranged in particular rotationally symmetrically around the penetration region, wherein the stiffening region is formed as at least one depression in sections substantially in the circumferential direction in the floor.From DE 27 52 733 C2 a cartridge is known which contains a substance for the production of a beverage with a corresponding machine. This cartridge has a tight housing with an acutely angled truncated cone shape and is usually made of aluminium sheet.WO 2010 / 041179 A2 discloses a capsule for beverage production, such as coffee, for example. The capsule may contain ground coffee and has a top surface on which a weakening area is incorporated.EP 1 944 248 A1 discloses a plastic capsule which contains a powder for the production of a beverage with a corresponding machine. A reinforced wall is installed in a central portion of the bottom of the capsule to prevent the bottom from flexing immediately prior to penetration.Such machines have complicated components, such as thermoblock, high-pressure pump, monitoring elements, control, etc. A disadvantage of these machines is that, in particular, the thermoblock, where the water is heated, has to be decalcified to a greater or lesser extent, depending on the degree of lime content of the water line. In addition, every time during preparation, coffee residues adhere in the machine parts, which can lead to mold formation over time. The components which direct the coffee flow from the capsule to the cup are particularly endangered. Moreover, the machines are of relatively complicated construction because they have many elements which can be disturbed by lime water. The brewing unit in the machine is one of the most expensive components, after the high pressure pump.However, there is still no water dispenser or water gun that can brew coffee!The invention is based on the object of creating an adapter which, in conjunction with a water gun, functions as a type of capsule coffee preparation machine.This problem is solved with an adapter having the features listed in claims 1 to 12.Advantages of the device are:the adapter supplies a first-class beverage which is scalded directly, in particular optimally suitable for a very leaky coffee,a simple construction of the adapter, which can mimic a conventional coffee machine, and thereby uses the capsule,light construction, so that it can also be designed as a portable device,- robust,no mold-forming sites are present,almost no risk of formation of lime,simply clean,optimally suitable for leisure in the outdoor range.Exemplary embodiments of the invention are explained with reference to FIGS. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 to 13. The following are shown: FIG. 1 shows an exemplary embodiment of the adapter, FIG. 2 shows an embodiment of the invention with the integrated heating element in the coffee capsule, FIG. 3 shows a further embodiment with a heating element, in the form of a metal heating coil integrated into the capsule, FIG. 4 shows the adapter construction, FIG. 5 shows a portable variant with a holder for the water gun, FIG. 6 shows the capsule with the heating coil integrated into the capsule wall, FIGS. 7 and 8 show the dual chamber, liquid capsules, FIGS. 9 and 10 show the strongly pressed coffee powder balls and a heating element, FIGS. 11 and 12 show the embodiment with the heating bolt, FIG. 13 shows an embodiment with an externally installed heating element.This adapter 1 is relatively simple in construction and is intended as an outdoor recreational fun article with practical use. It consists of a capsule-receiving chamber (capsule-coffee-receiving chamber) 2, an energy source 3 in the form of a rechargeable battery, a fluid line 4 equipped with a coupling 5, etc.The adapter is a simple device for preparing a hot beverage (coffee, tea, etc.) and does not have a pump and a water tank. It is intended as an accessory for a water gun 6 which can be coupled to the water gun by a holder or retaining bracket (frame) 7 and can also be used for coffee brewing if required! The water is received by the water gun, wherein the latter is used for a coffee preparation, for example. The adapter has a fluid line 4, the end of which is directly coupled to the nozzle 9 of the water gun by a coupling element 5. The coupling element is installed at the end of the fluid line. The coupling element may be provided with a thread 10 which can be screwed onto the water gun nozzle. Once the fluid conduit is connected to the water gun nozzle, by actuating the trigger 11 of the water gun, a water jet from the gun can be directed through the fluid conduit in the adapter. Although the pressure is not particularly high in the case of an electric water gun having 1.5 to 2.4 bar, it is sufficient for our purposes. In the adapter, a coffee capsule 12 is placed in its capsule-receiving chamber 2 and the lid 13 is closed, whereby the capsule 12 is pierced or perforated on the same side by one (or more) small injection needles 14 or perforators. The invention uses a special type of capsule, wherein an electric heating element 19 (e.g. in the form of a heating wire) is already incorporated in advance during manufacture. The lid is coupled to the fluid conduit and the water 16 from the water gun flows directly into the capsule by actuating the trigger. When this occurs, a push button 17 on the adapter 1 is pressed and the heating element 19 in the capsule is thereby activated or energized, causing flash heating. The heating element is to be made of a neutral material (noble metal, stainless steel, ceramic, etc.) and must not dissolve residual metal in the water upon heating because this would make the coffee unfeitable. Noble metals or heat-resistant materials (e.g. ceramics) can be quite suitable in this case. A check valve 18 installed in the lid or in the fluid conduit prevents the water from flowing out of the capsule in the wrong direction. Thus, no coffee-water mixture returns from the capsule to the water gun.In order to design the adapter as simply as possible, in one variant, special capsules are used here which already have an internal heating element 19. In contrast to the prior art, here the installation of the heating element directly into the capsule is novel. This obviates a water heater in the adapter. The coffee is brewingd directly into the capsule. The installation of a high-pressure pump in the adapter is also not necessary because heating the water directly into the capsule produces a vapor pressure drin in the capsule, which directs the capsule contents under pressure downwards, through the installed filter 20 in the capsule, directly into the cup 21. The design of this device is thus greatly simplified, so that it is optimally suitable for integration or connection and installation in a water gun. In particular, if the use of special capsules in cigarette form is also added, a very small device can be produced which can even remain on the water gun during the game. The capsule here, which is filled with a substance which can be used for a tea, coffee or espresso preparation, is relatively simple in construction. For this purpose, only the heating element which is integrated into it is new. The coffee capsule, which has a funnel-shaped tip 22, is mounted in the capsule receiving chamber of the adapter with the tip downwards, the cover is pressed downwards, closed, wherein a cannula / injection needle 14 pierces the capsule from above by the pressure downwards. The capsule-receiving container has a small opening or channel 23 downwards, into which the funnel-shaped tip of the coffee capsule can partially penetrate (but need not). The cold water from the water gun is injected into the low pressure coffee capsule (about 1-2.4 bar coming from the water gun pump) but does not yet flow down into the coffee cup 21 because the funnel tip of the capsule is still closed. This opening requires a somewhat higher pressure in the capsule. Once the capsule is filled with water, the water line is closed by a mechanical valve (shut-off valve) / electro-valve 18 into the needle 14, into the fluid line 4 (or into the piercing device), and the puncture site 24 into the capsule around the needle is sealed by a heat-resistant rubber seal / rubber ring 25. Whether the needle remains intact or is already retracted in a guide tube 26 in the adapter, which is left to the manufacturer. The electric current is conducted into the capsule through two contact points 27 in the outer region of the capsule, via two electrodes or contact pins 28 of the adapter, and the heating element 19, which is installed in the capsule or integrated into its capsule wall, is heated in a lightning-like manner. The capsule contents (coffee powder and water) 29 or the mixture in the capsule is heated very quickly and an overpressure is thus generated in the capsule. Because the capsule is in the capsule-receiving chamber of the adapter, it is thereby protected and cannot easily expand or burst in an uncontrolled manner. Thus, the capsule resists higher pressure values than if it were outside the chamber. The current will only flow very briefly through the heating element and heat it to about 110-130°C. This usually suffices to heat about 25 ml of water-coffee mixture to above 105° C. in a flash-like manner. The heat generates a vapor pressure in the capsule which suddenly increases. The heating of the contents and the formation of pressure take a few seconds or up to a few dozen seconds depending on how the heating element is constructed. The overpressure breaks, perforates or can open the tip of the capsule at a predetermined breaking point 30. Through the coffee capsule tip, which opens by overpressure of its own accord, the coffee then flows directly into the coffee cup. A minute small area in the capsule tip can be equipped with a small part flow moderator / interferer / deceleration agent designed like a solid foam 31 (mini filter) which somewhat decelerates and swirls the coffee flow (tea flow) so that no sharp jet strikes the cup. A cover hood or a cover can also be moved or placed on the cup so that no splashing from the cup occurs. As a rule, however, the flow moderator / interferer is entirely sufficient. The pressure increases in the capsule to a few bars within seconds, so that the contents are then pressed down because there is no other path for the coffee outflow. Laterally and from above the capsule is well protected and sealed by the support walls and the sealing ring 25 at the top, thus leaving only the way down through the capsule tip free. The water gun does not have to be kept perpendicular. The user only has to actuate the gun trigger 11 once at the beginning (or several times, depending on the amount of water) in order for the capsule to be filled with water. Because the adapter is equipped with a flexible fluid line 4 (hose) which is about 10-50 cm long, the gun can also be actuated horizontally. The adapter can be placed in a frame / stand 7 perpendicular over a cup.During production, a channel closure can be installed in the capsule at the capsule tip, which closure is opened by a predetermined breaking point or a closing part which / is opened only by overpressure in the interior of the coffee capsule. However, it is important that no parts must be released from the tip or the closure, because otherwise they land in the coffee cup. Such a closure may consist, for example, of a silicone disc (or a silicone body in cylinder or spherical form) which has a tiny hole in the centre which can be opened only by overpressure and remains otherwise closed. Once the capsule is filled with water and the air has evolved from inside through the puncture site, the puncture site is sealed by inserting a sealing ring along the cannula and the capsule is energized via the contact sites. In order to always correctly position the arrangement of the contact points of the capsule on the sprung contact pins / electrodes 28 of the adapter with respect to one another, the current contact points can be built onto the wall of the capsule in the form of two concentric circles / rings 32 which are electrically insulated from one another. This makes it possible to always make a current contact no matter how the capsule is rotated on its perpendicular axes. It is important to install two contact pins in the adapter that always contact the concentric rings. Although the capsule can also have a specific geometric shape which always ensures this position, such as, for example, an oval shape of the capsule as seen from above, with two eyes or contact pads, arranged diametrically, which serve as contact points for the capsule, it is no longer necessary in this case. For better suction of the water, the coffee capsule can already be air empty during production, or can be under vacuum to a greater or lesser extent. As soon as it is pierced through the injection needle, it automatically sucks in the water. In order to avoid splashing around, a small filter is located in the channel tip, which somewhat decelerates the flow of coffee and thus prevents the coffee in a smooth coffee flow to the cup.Once the coffee capsule has been placed in the capsule-receiving chamber of the adapter, the lid 13 in which the injection needle is located is closed from above. The closing can be effected by lowering the cover. As soon as the injection needle (the cannula) has pierced the capsule from above, approximately 15-25 ml of cold water are conducted through the fluid line to the needle via the water gun trigger actuation. Because the water gun blows only about 30-50 ml of water in a pulse shot, the fluid line should be relatively narrow because it should not "load" too much water on its own. In continuous jet water guns, the trigger should be held for a few seconds until no more water is flowing in. The "saturation" of the capsule blocks a further water flow, for which reason it is actually irrelevant how long the water gun trigger is still actuated after this. It is important that the coupling element 5 is correctly coupled to the water gun nozzle. A screw thread 10 can be helpful for this purpose, which is placed over the nozzle, is further rotated until a firm connection of the fluid line is established. It is optimal to install a counter piece 33 in the nozzle area of the water gun, which counter piece is equipped with a thread (external thread or internal thread, depending on the design of the coupling element of the fluid line), to which the coupling of the fluid line can be screwed or fixed. For an espresso, about 15-25 ml of water are required. Accordingly, the capsule should also be dimensioned so that it can absorb this quantity of water. The conventional capsules can contain about 18-40 ml of water, depending on the manufacturer. Because the water flows in through the relatively narrow injection needle, it causes a vortex inside the capsule, which mixes the coffee powder and the water relatively well. Immediately after water injection, the contact pads 27 are energized and the heating element in the capsule will flash heat the water-coffee mixture. An overpressure is formed in the capsule. Because the capsule is in the receptacle (capsule-receiving chamber) of the adapter, which is suitably shaped, it cannot expand or burst, but the predetermined breaking point (closure, e.g. annular closure) installed at the bottom of the capsule is opened and the coffee can flow directly into the cup. The capsule-holding container gives the capsule the necessary structural stability, while the internal pressure therein increases. A filter is to be installed in the capsule via the closure, as is also the case with conventional coffee capsules, so that the coffee flows outwards in a well-filtered manner. The closure can be a piece of break-off film or else a silicone body or a silicone disc which has a very narrow opening which is kept closed solely by the elastic material structure and which opens only by excess pressure and can allow the water to flow out. As in the well-established technique in screen carrier espresso machines, this disc would also generate the espresso foam by vibrations during the passage of the coffee.The heating element in the capsule is to be constructed as simply as possible. This may be a very simple metal coil (e.g., stainless steel, ceramic or Alu coil) or coil "scratched" to the capsule wall or positioned centrally through it. The Alu capsule wall may serve as a heating element when it is spirally cut and insulated or comprise conductor strips which are arranged quite thinly along the insulated wall so that the current can flow as in a spiral or in narrow conductor tracks with high electrical resistance. The pressure is generated solely by the heat in the capsule and the vapor generated there displaces the water-coffee powder mixture from the capsule. Thus, this adapter can be designed to be very small and portable. In this case, it would merely have to have a battery 3 for the power supply and the coffee would thus be feasible at any time, for example after a water game slaughter in the open air. Because no pump and water heater are needed in the adapter, it can be built as small as a thick felt tip or cigarette box and could remain on the water gun all the time (Fig. 5). Once the capsule is filled with water and the current is turned on, the water mixture is heated within seconds. The remainder is achieved by the water vapor in the capsule. An electronic control 34 is necessary, which monitors the power supply and switches off the power supply after a few seconds, so that no melt is formed from the heating element. A temperature sensor 35 can also be installed in the receiving container, but is not absolutely necessary.The function of the adapter allows a very rapid coffee preparation. It can prepare an espresso in less than 10 seconds, for example.For the water-coffee mixture heating, a heating element, in the form of a metal, stainless steel, tungsten or aluminum heating coil integrated into the capsule wall, can be used. In reality, the aluminum capsule wall 36 is designed in the form of a spiral ("scratched") and is integrated on a further insulation wall 37. Another inner insulation wall isolates the heating element from the capsule contents (coffee and water). The inner insulation wall should be able to conduct the heat of the heating element well and should have a current-insulating effect. The spiral heating element is supplied with power by two electrodes or contact pins which touch the contact points of the capsule, which conduct a current briefly into the capsule from the rechargeable battery of the adapter. The capsule contents are thereby flash heated, an overpressure is created and the coffee flows from the capsule directly into a coffee cup. Because at the tip of the capsule in the channel which opens by overpressure is closed with a silicone body, the coffee flow is also enriched with a coffee foam by micro-vibrations during outflow.It should be mentioned that the capsule must withstand the heat of the internal heating element or the capsule wall must be produced from a material which would not melt at 150° at the same time. Alu is already suitable. The capsule-receiving chamber in the adapter should also be heat-resistant. Nevertheless, the adapter can be equipped with temperature monitors or current flow controllers which would prevent overheating of the heating element in the capsule. Generally, it would be entirely sufficient if the heating element is heated to 130-140°C.The adapter can be equipped with an electronic temperature controller / regulator and a temperature sensor which switches off the power supply when a specific temperature is reached. Or the heating element can also be coupled outside the capsule to a "fuse location" which is interrupted after a few seconds by the current flow through the melting process. However, no current conductor or fuse melt should take place in the coffee capsule. These can be incorporated outside the capsule. The capsule-accommodating container of the adapter is intended to prevent the capsule from expanding, and therefore is intended to be of stable construction and made of a heat-resistant material. Ceramic, metal or also certain heat-resistant plastics are suitable for this purpose. As coffee capsules, those in long and narrow form / cigarette form-like capsules can be used very well here. In those cases, it would be easy to install a current line (for example made of parts or strips of the capsule wall) in the capsule along which is rapidly heated by the electrical resistance. The contact points could in this case be installed at the ends of the cigarette-shaped capsule respectively or both at one end. Whether the capsule is constructed from metal foil, wood, paper, bamboo or heat-resistant plastic, this is left to the manufacturer. The capsule itself does not have to be able to withstand very high pressure values. A few bars are sufficient. However, it resists the significantly higher pressure when it is located in the capsule-receiving container, because there it is supported almost from all sides by the container walls. In general, pressure values of 2-10 bar are completely sufficient because these values are generated directly in the capsule and not outside by a pump, which would have to accept significant pressure losses through the lines. The 5 bar directly generated here are almost analogous to a pressure pump which operates in a coffee machine which generates 20 bar.Because the capsule here already has the heating element, it would be thought that they would have to be more environmentally harmful than the conventional capsules, which is not necessarily the case, however. The heating element consists of a metal spiral which can also be a component of the capsule wall which is incorporated in the capsule wall or is integrated into the capsule wall. Integration into the capsule wall is an optimum solution because no extra metal parts have to be incorporated. For this purpose, only a special "cut" has to be carried out on the conventional capsule wall, which converts the wall into narrower conductor tracks, which can be heated by current flow. More is not necessary. This does not make the capsule heavier and it is also not of more complicated construction. The narrow Alu traces (turns) 38 "scratched" to the capsule wall conduct current directly from the contact points, heating up in the process. The conductor tracks can be designed, for example, in strip form approximately 1 mm or somewhat wider and, with a total length of approximately 15-30 cm of all windings on the capsule wall, they provide enough current resistance that they can be heated like a flash (FIG. 6 ). However, they should not be energized so strongly that they melt or burn, but merely so that they heat up to about 110-130° C. A current flow controller can control the precise current strength and voltage so that these desired temperatures are also achieved. The coffee water in the capsule heats up within seconds, thereby creating the necessary pressure that opens the tip of the capsule, which is located downward, and allows the coffee to flow directly into the cup. The filter at the bottom of the tip prevents explosion-like discharge of the coffee and slightly decelerates the flow velocity so that it can land in the cup smoothly and without splashing.This adapter for the preparation of espresso or coffee is of such a simple construction that it can easily also be designed as a mobile, portable device, with its own battery, also be coupled to any water dispenser. As such an appliance, it can be constructed in the form of a somewhat thicker ballpoint pen / felt pen which can accommodate a battery and which is equipped with a capsule-accommodating shaft. The electronic control limits the current to precise values and thus protects the user and the device against burns. The outer wall of the capsule-receiving container is designed such that it has an insulating effect on the heat emitted by the capsule. In this way, this container can also be handled safely by hand. The outer wall can be designed to be heated only slightly, even if a few capsules are used one behind the other and several coffees have been prepared.FIG. 7 shows the embodiment in which both the coffee powder and the cold water are already soaked in the coffee capsule during production. This liquid coffee capsule or dual chamber capsule 39 is composed of two chambers: a water chamber 40 and a coffee powder chamber 41. the coffee powder 42 and the water 16 are separated from each other by a breakable thin film (separation film, aluminum film, partition wall, separation membrane) 43. The heating element in the dual chamber capsule is located in the water chamber, but can also be partially installed in the coffee powder chamber. As soon as the pressure in the water chamber increases due to the heating, the separating film (e.g. aluminum film) is torn and the hot water flows into the coffee powder chamber. For optimum water flow, the water chamber can be constructed in the form of a hat and be placed over the coffee powder chamber. As a result of the water heating, the pressure continues to rise permanently into the capsule and, finally, a further closure film will give way finally into the coffee powder chamber, which allows the coffee to pass down into the cup.The coffee liquid capsules can also be produced without an incorporated heating element. In this case, the heating element would have to be introduced from the outside in the form of a bolt 48 (FIG. 8 ). Whether an external heating element 51 is installed in the bolt or a heating element is placed over it is left to the manufacturer.It should be mentioned that the capsule is to be made of a heat-resistant material. Plastic would melt and is rather unsuitable for this purpose. Alu is a good choice. It is also possible to use wood / bamboo for the capsule wall. These are sustainable or rapidly renewable raw materials, which are optimally suitable for capsule production. In order to allow airtight enclosure of the coffee powder, the inner or outer wall of the capsule may be impregnated from wood.FIG. 9 shows a further embodiment, wherein the capsule is constructed completely spherical and is filled with compressed coffee powder. The heating element is located in the ball capsule 44 and only the current pads are outside. However, the coffee powder can also be made into a spherical shape in a strongly pressed manner and form a coffee unit without an outer casing (FIG. 10 ). The heating element 19 is also pressed in during the pressing process during the production of the pressed coffee powder ball 45. The contact points 27 are accessible from the outside or are placed on the surface of the pressed coffee powder ball. This would be a "capsule" without a shell, which minimizes waste products after use or coffee extraction. Only the thin heating element in the form of a heating wire or pin remains, which hardly falls into any weight during the waste formation. If it additionally contains iron, this heating wire can be quickly attracted from a waste pile by a magnet / electromagnet alone and cleanly separated from the remainder. In order to protect the coffee powder from oxidation, the surface of the coffee ball may be impregnated. As the impregnation layer, thin glass sugars, a caramelized layer, or a coffee powder layer of its own can consist of ultrafast and highly heated coffee powder layer that is very thin but does not allow air to pass through. In that case, one could treat the surface of the coffee bullet with intense laser beams or hot plasma jets (800°-40,000 °C), which would result in a protective shell formation if the coffee powder granules on the surface were flash melted. Depending on how long the ball is exposed to the plasma jets, this protective sheath 46 can be very thin (micrometer range) or even somewhat thicker (in mm range).The adapter can also be coupled to any water dispenser which virtually without pressure brings the water into the capsule. It is always important in the adapter that the shut-off valve function be reliable. It is always intended to prevent the coffee from flowing out of the capsule in the wrong direction, namely in the water source direction. A small filter / screen is to be installed in the coupling of the fluid line.A further embodiment is an adapter which can also use conventional capsules (coffee capsules, tea capsules, etc.), because here the heating element is no longer located in the capsule, but is coupled to the cover 13 and is designed in the form of a pin, bolt or cannula 14 with an integrated heating element 15 (FIG. 11 ), with a tip 47 for piercing the capsule. The variant with the stud may be built such that the heating element is built in the form of a heating pin of the heating stud 48 (like a full nail) and is configured with a puncture needle 49 installed next to it, which may be embedded e.g. in a groove 50 along the stud injecting the water into the capsule (FIG. 12 ). However, the stud can also be constructed simply from a noble metal, stainless steel or ceramic, wherein an external, electrical heating element 51 is placed over it and heats the stud, similar to a soldering iron whose soldering tip is heated by a heating element and thermal contact arranged above it (FIG. 13 ). The variant is nevertheless more advantageous, in which a water line (water channel, tube, cannula) is located in the bolt, which is directly coupled to the fluid line. The water flows from the water gun, through the fluid conduit directly through the tube in the heating element, into the capsule, thereby filling the capsule contents with water. Already while the water is running through the cannula, the heating element can be switched on and heat the water into the continuous heating function. In that case, the cannula would function as a continuous flow heater and heat the water as it flows into the capsule. However, with very lime water to minimize lime formation, only after the capsule is fully filled with cold water from the water gun can the heating element be integrated into the injection needle, energized, which also causes flash heating of the contents into the capsule. The capsule-receiving chamber in the adapter is to be constructed of a stable material because it is intended to prevent the capsule from expanding due to sudden vapor pressure generated therein. The coffee flows out of the capsule downwards through a predetermined breaking point in the capsule wall and lands directly in a cup. A small filter incorporated into the capsule filters the coffee contents and also prevents microdroplets from spreading laterally. Thus, the coffee flows into a cup nice in a slow jet. Depending on the manufacturer, the conventional capsule has an internal volume between 18 and 46 cm 3( the Nesspresso capsule dimensions are about: cone of broader base 29 mm, height 29 mm, smaller base 25 mm. Internal volume about 18-19 cm 3), which is sufficient for our purposes. An espresso can be prepared with about 25 ml of water. For the larger capsules, which have a 3 volume of up to 46 cm, the preparation with a water filling is sufficient. In the smaller capsules, by electronic (or mechanical) control, water filling and emptying can take place twice (or more times). In this case, two or more water jets would have to be actuated from the water gun. During the first water jet, the capsule fills, the heating element is switched on, the coffee content in the capsule is heated in a lightning-like manner and flows down into the cup as a result of the vapor pressure. The shut-off valve (but may also be an electro-valve) does not allow the coffee content to flow back into the water gun. As soon as the coffee flows into the cup, the internal pressure in the capsule falls rapidly and a water jet can be discharged again from the water gun, which water jet refills the coffee capsule. The heating element is again switched on and a new pressure is generated, which allows the rest of the coffee content to flow into the cup. The brewing process is very short. Depending on the power output, this can only take a few seconds until the water / coffee content in the capsule is heated to 110° C.A shut-off valve or electro-valve, which is installed in the cover or in the fluid line in both variants, prevents the water from flowing out of the capsule in the wrong direction. Thus, no coffee-water mixture returns from the capsule to the water gun. The capsule-receiving chamber has a suitable shape suitable for receiving conventional coffee capsules. A hollow cylinder or funnel / cone shape is thereby optimally suitable for this purpose. The lid, which is coupled to the fluid conduit, may be provided with a screw-cap / screw thread or with a hinge, thereby connecting it to the capsule-receiving chamber. In the case of a hinge design, a retaining bracket or closure is to be installed on the opposite side, which retaining bracket or closure holds the cover in the closed state. Such closures are common in many household or food manufacturers containers, with reusable lids built into glass containers.This disguising of the purpose of the water gun for the coffee preparation can additionally increase the fit factor in the water games. However, the water in the water gun should be clean water and a water filter 8 should also be integrated at the coupling inlet so that no residues for the coffee preparation are included.The adapter can be provided with a stand holder (e.g. a wire frame) 7, whereby vertical placement and accurate positioning over a coffee cup will be possible. This bracket may also be used for attachment to the water gun. Because the adapter is hardly heavy, it can remain folded shut (or removed) on the water gun during water play.In a further variant, the adapter is designed such that ball-pressed coffee moulds / coffee balls without a capsule shell / aluminum outer shell can also be inserted into the capsule receiving chamber. Here, the filters are installed directly in the adapter. The coffee balls may have the heating element already during manufacture, or a heating element built into the inner wall of the lid will protrude into the ball as soon as the lid is lowered or folded.Instead of capsules, units of strongly compressed coffee powder balls (with or without outer shell) can also be used. Such spheres can be provided with an impregnation which maintains the aroma in the long term. Capsules made of wood or bamboo can also be used for our purposes. The heating element can already be integrated into these coffee powder units, or it is inserted into the adapter and the contents are mixed with water and heated in the process.It should be noted that the water gun to be coupled to the adapter should be provided with a threaded or coupling element in the nozzle area, whereby it can be more easily connected to the fluid conduit of the adapter. There, for example, another external nozzle or an adapter external to the purpose can also be connected.LIST OF REFERENCE CHARACTERS1 Adapter 2 capsule-receiving chamber, capsule-receiving container 3 energy source, rechargeable battery 4 fluid line 5 coupling, coupling part / coupling element 6 water gun 7 holder, retaining bracket, frame, stand 8 water filter at the coupling inlet 9 nozzle 10 thread 11 trigger of the water gun 12 coffee capsule / capsule 13 lid 14 injection needles, cannula / injection needle 15 heating element 16 water 17 switch-on button 18 blocking valve 19 internal heating element (into the capsule) 20 filter 21 cup 22 funnel-shaped coffee capsule tip 23 small opening or channel 24 puncture point 25 rubber seal / rubber ring / sealing ring 26 guide tube 27 current contact points, contact points 28 electrodes, Contact pins of the adapter 29 capsule content (coffee powder and water) 30 predetermined breaking point 31 solid foam / filter 32 concentric circles 33 counterpart for the thread 34 electronic control 35 temperature sensor 36 aluminum capsule wall 37 insulation wall 38 aluminum conductor tracks (windings) 39 liquid coffee capsule or dual chamber capsule 40 water chamber 41 coffee powder chamber 42 coffee powder 43 predetermined breaking foil (separating foil, aluminum foil, separating wall, separating membrane) 44 ball capsule 45 coffee powder ball 46 protective sleeve 47 cannula, bolt tip 48 heating pin of the heating bolt 49 puncture needle 50 groove 51 external, electrical heating element

Claims

Adapter (1) for a water gun (6) or for any water dispenser device with a water outlet, comprising: - a capsule-receiving chamber (2) designed to receive a capsule (12) with a content for the preparation of a hot beverage, - an energy source (3), - a lid (13) able to close the capsule-receiving chamber (2) in an airtight manner, - a fluid line (4) connecting the lid (13) and the nozzle (9) of the water gun (6) or the water outlet to each other, characterized in that it comprises at least - a coupling element (5) designed to connect the fluid line (4) to the nozzle (9) of the water gun (6) or the water outlet, - a shut-off valve (18) allowing a flow of water in one direction only, A device for supplying water from the water gun (6) or the water outlet to the adapter (1) allows - a heating element (15, 48), which is designed in the form of a ceramic pin or a metal bolt or is of hollow cylindrical construction and is equipped with a tip and a cannula or a water tube which is directly coupled to the fluid line (4) which is coupled to the cover (13) of the adapter (1) which pierces the capsule (12) when the cover (13) is closed and injects the water from the water gun (6) or the water outlet into the capsule (12), - an electronic control (34) or a switch for the current control in the heating element (15, 48), - a discharge opening through which the capsule contents can flow out into a cup (21).Adapter (1) for a water gun (6) or for any water dispenser device with a water outlet, comprising: - a source of energy (3), - a cover (13) able to close the capsule-receiving chamber (2) in an airtight manner, characterized in that it comprises at least - a capsule-receiving chamber (2) designed to receive a specific capsule (12) containing a content for the preparation of a hot beverage, said capsule (12) comprising at least one heating element (19) integrated in or within the capsule wall and two current contact points (27) externally accessible in the capsule wall coupled to the heating element (19) of the capsule (12), - two current contacts or contact pins (28), which are installed on the lid (13) or in the capsule-receiving chamber (2), which are connected to the energy source (3) of the adapter via an installed electronic controller (34) or a switch (17), which can close a circuit in the heating element (19), - a fluid line (4) which connects the lid (13) and the nozzle (9) of the water gun (6) or the water outlet to one another, - a coupling element (5) which is designed for connecting the fluid line (4) to the nozzle (9) of the water gun (6) or the water outlet, - a shut-off valve (18) which permits a flow of water only from the water gun (6) or the water outlet to the adapter (1), - an electronic controller (34) or a switch for the current control in the heating element (19), a discharge opening through which the capsule contents can flow out into a cup (21).Adapter (1) for a water gun (6) or for any water dispensing device with a water outlet according to claim 1 or 2, characterized in that the electronic controller (34) is equipped with a timer function that switches off the current flow in the heating element (15, 19, 48) after a certain time.Adapter (1) for a water gun (6) or for any water dispensing device with a water outlet according to any one of the preceding claims, characterized in that instead of or in addition to the shut-off valve (18), an electric valve coupled to the electronic controller (34) is installed.Adapter (1) for a water gun (6) or for any water dispenser device with a water outlet according to any one of the preceding claims, characterised in that it is equipped with a magnetic coupling.Adapter (1) for a water gun (6) or for any water dispensing device with a water outlet according to any one of the preceding claims, characterized in that it is equipped with a fastening element or stand (7) by which the adapter (1) can be brought into a vertical position for an optimum hot beverage flow over a cup (21).Adapter (1) for a water gun (6) or for any water dispenser device with a water outlet according to claim 6, characterised in that the fastening element or stand (7) is designed for fastening or coupling the adapter (1) to the water gun (6).Adapter (1) for a water gun (6) or for any water dispensing device with a water outlet according to any one of the preceding claims, characterized in that it is designed to contain capsules (12) with coffee contents made of wood or bamboo or paper.Adapter (1) for a water gun (6) or for any water dispenser device with a water outlet according to one of the preceding patent claims, characterized in that the capsule (12) is air-empty or there is a reduced pressure / vacuum.Adapter (1) for a water gun (6) or for any water dispenser device with a water outlet according to any one of the preceding claims, characterized in that the heating element (15, 19, 48) is a heating resistor element or a heating coil or heating coil in the capsule (12).Adapter (1) for a water gun (6) or for any water dispenser device with a water outlet according to any one of the preceding claims, characterized in that it is designed for beverage preparation and accommodation of coffee balls (45) made of compacted coffee powder (42) without a capsule shell.Adapter (1) for a water gun (6) or for any water dispenser device with a water outlet according to any one of the preceding claims, characterized in that it is equipped with a power supply connection or a USB connection for charging the energy source (3).

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