• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A hot beverage dispensing device has connections (44a, 44b) for at least two storage containers (21a, 21b) in which liquid foodstuffs optionally used as beverage ingredients are stored, a beverage outlet unit (10) for dispensing the liquid foodstuffs into a vessel (11) to be placed underneath, and a heater (30) for heating the liquid food prior to dispensing. In order to avoid mixing with residues of another liquid foodstuff still in the lines from the previous beverage dispensing, the invention provides that the connections (44a, 44b) for the at least two storage containers (21a, 12b) with the outlet unit (10) are spatially separated Food lines (32a, 32b) are connected. The heating device (30) has at least two separate fluid paths (31a, 31b) for the different liquid foods and a common electrical heater for the fluid paths (31a, 31b). Liquid food from the different storage containers (21a, 21b) is thus conveyed to the beverage outlet unit (10) via spatially separate food lines (32a, 32b) and, as far as the heating device (30) is concerned, via separate fluid paths (31a, 31b).
    公开号:CH717214A2
    申请号:CH00113/21
    申请日:2021-02-05
    公开日:2021-09-15
    发明作者:Müller Simon；Remo Weniger Stefan
    申请人:Franke Kaffeemaschinen Ag；
    IPC主号:
    专利说明:

    The present invention relates to a hot beverage dispensing device with connections for at least two storage containers in which liquid food serving as beverage ingredients are optionally held, a beverage outlet unit for dispensing the liquid food into a vessel to be placed underneath, and a heating device for heating the liquid food one issue.
    In a hot beverage dispensing device such as a fully automatic coffee machine, hot beverages are usually freshly prepared and dispensed from hot water and a beverage raw material in a brewing process. In addition, however, liquid foodstuffs such as milk can be kept in a storage container and optionally dispensed as beverage ingredients when a hot beverage is dispensed. For reasons of hygiene, such liquid food is usually stored in a refrigerated environment. Before or during serving, the food must therefore be warmed up in order to prevent the hot beverage from cooling down when the milk is added. In the case of known fully automatic coffee machines, this can be done with the aid of steam or a flow heater.
    Also known on the market are devices in which two storage containers for different types of milk can be provided in a milk refrigerator designed as a side device. The type of milk is selected using switching valves in the milk refrigerator. From there, the type of milk from the selected storage container is conveyed by a milk pump via a common feed line and a flow heater designed as a thermoblock to an outlet on the beverage outlet head of the fully automatic coffee machine. Since the milk system does not have to be laboriously cleaned every time a beverage is dispensed, this can lead to a mix-up with residues of the type of milk that was previously dispensed. Among other things, this can be disadvantageous with regard to allergens that may be contained in the liquid food, e.g. with regard to the optional dispensing of normal whole milk and lactose-free milk.
    The invention has therefore set itself the task of specifying a hot beverage dispensing device in which, if necessary, in addition to freshly brewed hot beverages, liquid food can optionally be dispensed from at least two storage containers without mixing with the previous beverage dispensing in the lines remains of another liquid food.
    The object is achieved by the features of claim 1. Advantageous embodiments can be found in the dependent claims.
    In a hot beverage dispenser of the type mentioned, the invention provides that the connections for the at least two storage containers are connected to the outlet unit via spatially separate food lines and the heating device has at least two separate fluid paths for the different liquid food and a common electrical heater for the Has fluid paths. Liquid food from the different storage containers is thus conveyed to the beverage outlet unit via spatially separate food lines and, as far as the heating device is concerned, via separate fluid paths. This has the advantage that only one heating device is required, which is used to heat different foods. This enables, on the one hand, a compact design and, on the other hand, economical, energy-saving operation, since separate heating devices do not have to be provided and kept at operating temperature.
    The heating device is preferably designed as a thermal block. For this purpose, it has a heat accumulator made of a material of high thermal mass and conductivity, such as aluminum, brass or copper, with which the fluid paths and the heater are in thermal contact. Such a thermoblock is usually kept at the operating temperature during operation, so that there is no need for lengthy heating before each product is purchased.
    In a preferred embodiment, the heat accumulator consists of a cast metal, in particular cast aluminum, which at least partially surrounds the fluid paths and the heater. The thermoblock thus consists of a cast metal block with fluid paths and heating embedded therein, as well as, if necessary, insulation surrounding the cast block, and can thus be constructed in a particularly compact and energy-efficient manner. Aluminum has a particularly high thermal conductivity and thus guarantees even heat distribution.
    In a preferred embodiment of such a thermal block, the fluid paths and the heater can be designed as a concentric coil. For example, the fluid paths can be designed as coiled copper or stainless steel lines that form an outer and a central coil, and the heater can be formed by an inner heating coil, with all three coils being arranged concentrically around a common central axis. This results in a particularly space-saving structure. If copper lines are used, an additional food-safe inner coating can be applied so that the liquid food is not in direct contact with the copper.
    The hot beverage dispensing device can furthermore be designed with a control device for the controlled activation of the electric heater, which keeps the heat accumulator of the heating device at a constant operating temperature. The operating temperature here is preferably below 80.degree. C., more preferably below 70.degree. At the temperatures mentioned, in particular in the case of milk products, fewer deposits are formed, which lead to contamination (fouling) of the thermoblock that is difficult to remove. In addition, lengthy heating up before a beverage is dispensed is avoided at a correspondingly constant operating temperature. The hot beverage dispenser is thus ready to dispense at any time.
    In a further preferred embodiment, the beverage outlet unit has at least two juxtaposed outlets for the different liquid foods. A spatially separated line routing through to spatially separate outlets reliably prevents different foods from being mixed up when they are served.
    The hot beverage dispensing device expediently has a receiving space for the at least two storage containers. This preferably has a cooling device for cooling the receiving space. This means that perishable foods such as milk or milk substitutes in particular can also be stored for a longer period of time. It is therefore not necessary to remove the storage container in order to store it in a refrigerator and to connect it to the hot beverage dispensing device only as required.
    In particular, it can be provided that the receiving space with the cooling device is designed as an accessory device and is connected to a hot beverage dispenser, in particular a fully automatic coffee machine, via separate food lines. The accessory device can thus be arranged at a suitable location, for example under a counter, while the actual hot beverage dispenser is set up on the work surface located above. This results in a particularly space-saving structure.
    Further advantages and properties of the present invention emerge from the following description of exemplary embodiments on the basis of the figures. 1 shows a fluid diagram of a hot beverage dispensing device with two storage containers, FIG. 2 an isometric representation of the thermoblock used in the hot beverage dispensing device, FIG. 3 a section through a thermoblock with two separate fluid paths, and FIG. 4 an isometric representation of the helical fluid lines and the heating of the thermoblock from FIG. 2 .
    In Figure 1, a so-called water flow diagram of the hydraulic components of a hot beverage dispenser is shown. The hot beverage dispensing device can in particular be a fully automatic coffee machine. The device comprises an outlet head 10 under which a drinking vessel 11 is placed. Various hot beverages or beverage ingredients can be dispensed into the drinking vessel 11 via the outlet head 10. For this purpose, the device comprises a hot water heater 12 in the form of a boiler. Hot water can be dispensed to the outlets 10a, 10b of the outlet head 10 via the valves 13a, 13b. Via the switching valves 14a, 14b, the hot water for flushing the fluid paths can also be conducted directly into a drain via the drainage line 15.
    With the hot water from the hot water boiler 12, for example, hot tea or freshly brewed coffee can be prepared. A corresponding brewing device of conventional design known per se is not shown here for the sake of clarity.
    In the context of the present invention, it is essential to dispense liquid food, in particular milk, held in storage containers. For this purpose, a refrigerator 20 is provided in which two storage containers 21a, 21b are stored in a cooled manner. This means that two different liquid foods such as normal whole milk and lactose-free milk or low-fat milk or milk substitute products such as almond milk, rice milk, soy milk or oat milk can be stored. It is also possible to keep other ready-made drinks such as tea in one of the storage containers 21a, 21b and to dispense them optionally as hot drinks or hot drinks.
    Each of the two storage containers 21a, 21b is each connected via a suction line to a pump 22a, 22b via which the liquid food in question can be conveyed from the storage container 21a, 21b to the outlet head 10. The fluid paths for the liquid food stored in the two storage containers 21a, 21b run completely separately up to the outlet head 10. Since the hydraulic circuit for the liquid food from the two storage containers 21a, 21b is constructed symmetrically, only the fluid path for the food from the storage container 21a is explained below. The same explanations apply mutatis mutandis to the second fluid path of the food from the second storage container 21b.
    In the suction line between the reservoir 21a and the pump 22a there is a shut-off valve 23a. In addition, an air line 24a opens into the suction line between the shut-off valve 23a and the pump 22a. This is provided with an air valve 25a. If the air valve 25a is opened, then when the pump 22a is operating, in addition to the liquid foodstuff, air is also sucked in from the storage container 21a. In this way, the liquid food from the storage container 21a can be foamed in the pump 22a and dispensed as a foamed beverage additive such as milk foam. The amount of air can be metered through a clocked operation of the air valve 25a. In addition, a flushing line 26a opens into the air line 24a. By opening a flush valve 27a, water can be passed through the milk system via this in order to clean it.
    On the pressure side of the pump is a helical mixer 28a, which serves as a counter-pressure element to increase the pressure prevailing in the pump. This promotes the foaming of the liquid food. As an alternative to the helical mixer, any other desired counter-pressure element, for example a fixed screen or a labyrinth-like resistance passage element, can also be used.
    Behind the counter-pressure element 28a, two closing valves 29, 29 'are arranged in parallel. By opening the valve 29, the liquid food conveyed by the pump 22a can be conveyed from the storage container 21a via a food line 33a to a heating device 30 designed as a thermoblock and via this further to the beverage outlet 10a on the outlet head 10. The liquid food is heated in the thermoblock 30, so that it is dispensed as a heated beverage ingredient for the preparation of a hot beverage. Alternatively, the valve 29 can be closed and the valve 29 'can be opened. As a result, the thermoblock is bypassed and the liquid food being conveyed is dispensed directly, that is to say without being heated, at the beverage outlet 10a of the outlet head 10. This option can be selected if a chilled beverage such as iced coffee or iced chocolate is required instead of a hot beverage.
    The device also has a second hot water boiler 40. Via this hot water can be filled into a detergent mixing container 41 for cleaning purposes. A metering pump 42 can also be used to convey detergent from a detergent container 43 into the detergent mixing container 41. In this way a detergent solution is mixed. The suction line coming from the pump 22a can be connected to the cleaning agent mixing container 41 via a reversible connecting element 44a. This means that cleaning fluid can be sucked in and conveyed through the milk system. In this case, the drainage valve 14a is opened in the direction of the drainage line 15, so that the cleaning agent solution cannot inadvertently be dispensed into a drinking vessel. Subsequently, rinsing is carried out with water by opening the valve 27a. A corresponding integrated cleaning system is described in EP 3349627A1, to which reference is made here in full to avoid unnecessary repetitions.
    The connecting element 44a and the parallel connecting element 44b for the second reservoir 21b serve as plug connections for the reservoir and optionally for the detergent mixing container 41, which can be connected to carry out cleaning instead of the reservoir 21a, 21b.
    A special feature of the device is the thermal block 30. This has two separate fluid paths 31a, 31b. The fluid path 31a is connected to the food line 23a coming from the first storage container 21a, while the fluid path 31b is connected to the food line 32b coming from the second storage container 21b.
    In Figures 2 to 4, the structure of the thermal block 30 is shown in more detail. The base body 33 of the thermal block 30 consists of a cast aluminum body. The lines serving as fluid paths 31a, 31b and an electrical heater 34 with electrical connection contacts are embedded in this. The lines 31a, 31b are made of stainless steel and run inside the thermoblock 30 in a helical manner. The electrical heater 34 is also designed in a helical manner. The helical heater 34 and the helical lines 31a, 31b are arranged concentrically around the central axis of the thermal block 30, the heater 34 forming the innermost helix.
    In an alternative embodiment, the thermal block could also consist of a base body made of copper, onto which food lines are soldered as fluid paths. In this case, the heater could be arranged in the interior of the base body or on its side opposite the food lines.
    With the heater 34, the thermal block 30 is brought to a constant operating temperature between 60 ° C and 70 ° C. A fluid which flows through the helical lines 31a, 31b is heated on its way through the thermal block 30. Due to the large thermal mass of the cast aluminum body 33, a constant operating temperature can be maintained via the heater 34 when liquid foodstuffs are passed through fluid paths 31a and / or 31b. A temperature sensor 35 on the thermoblock 30 continuously measures its temperature and can be readjusted via the heater 34.
    The two boilers 12, 40 are connected to a water inlet 45. In the supply line there is a water pump with which fresh water is conveyed. In the two feed lines leading from the water pump 46 to the boilers, flow meters 47, 48 are also arranged, with which the amount of water is measured. In this way, the amount of beverage can be metered with regard to the hot water boiler 12 and the concentration of the cleaning agent solution in the cleaning agent mixing container 41 with regard to the hot water boiler 40. In addition, a line branches off from the water supply line which leads via the flushing valves 27a, 27b to the air intake lines of the two fluid branches. As already described, the respective fluid branch of the milk system can be rinsed via these valves.
    In the exemplary embodiment, a thermal block with two separate fluid paths was shown. In principle, it would also be possible to provide more than two fluid paths in a corresponding manner if more than two different liquid foodstuffs are to be held and optionally dispensed. It would also be possible to provide a second thermal block for more than two types of liquid food.
    权利要求:
    Claims (10)
    [1]
    1.Hot beverage dispensing device with connections (44a, 44b) for at least two storage containers (21a, 21b), in which liquid foods optionally serving as beverage ingredients are held, a beverage outlet unit (10) for dispensing the liquid foods into a vessel (11) to be placed underneath , and a heating device (30) for heating the liquid food before serving,characterized in thatthe connections (44a, 44b) are connected to the beverage outlet unit (10) via spatially separate food lines (32a, 32b) and the heating device (30) has at least two separate fluid paths (31a, 31b) for the different liquid foodstuffs and a common electrical heater ( 34) for the at least two fluid paths (31a, 31b).
    [2]
    2. Hot beverage dispensing device according to claim 1, in which the heating device (30) has a heat accumulator (33) made of a metal with high thermal mass and / and conductivity, in particular aluminum or copper, with which the fluid paths (31a, 31b) and the heater ( 34) are in thermal contact.
    [3]
    3. Hot beverage dispensing device according to claim 2, in which the heat accumulator (33) consists of cast metal, in particular cast aluminum, which at least partially surrounds the fluid paths (312a, 31b) and the heater (34).
    [4]
    4. Hot beverage dispensing device according to one of claims 2 or 3, in which the fluid paths (31a, 31b) and the heater (34) are designed as a concentric helix.
    [5]
    5. Hot beverage dispensing device according to one of claims 2 to 4, with a control device for the controlled control of the electrical heater (34), which is designed to keep the heat accumulator (33) of the heating device (30) at a constant operating temperature, the operating temperature below 80 ° C, preferably below 70 ° C.
    [6]
    6. Hot beverage dispensing device according to one of the preceding claims, in which a pump (22a, 22b) is assigned to each of the connections (44a, 44b) for conveying the liquid food from the relevant storage container (21a, 21b) to the beverage outlet unit (10) .
    [7]
    7. Hot beverage dispensing device according to one of the preceding claims, in which the beverage outlet unit (10) has a plurality of outlets (10a, 10b) arranged next to one another for the different liquid foodstuffs.
    [8]
    8. Hot beverage dispensing device according to one of the preceding claims, with a recess space for the storage container (21a, 21b).
    [9]
    9. hot beverage dispensing device according to claim 8, with a cooling device for cooling the receiving space.
    [10]
    10. Hot beverage dispenser according to claim 9, in which the receiving space with the cooling device is designed as an accessory device (20) and is connected to a hot beverage dispenser, in particular a fully automatic coffee machine, via separate food lines (32a, 32b).
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    同族专利:
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102020106366|2020-03-09|
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