Classifications

• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
  • A47J31/00—Apparatus for making beverages
  • A47J31/002—Apparatus for making beverages following a specific operational sequence, e.g. for improving the taste of the extraction product
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
  • A47J31/00—Apparatus for making beverages
  • A47J31/44—Parts or details or accessories of beverage-making apparatus
  • A47J31/52—Alarm-clock-controlled mechanisms for coffee- or tea-making apparatus ; Timers for coffee- or tea-making apparatus; Electronic control devices for coffee- or tea-making apparatus
  • A47J31/525—Alarm-clock-controlled mechanisms for coffee- or tea-making apparatus ; Timers for coffee- or tea-making apparatus; Electronic control devices for coffee- or tea-making apparatus the electronic control being based on monitoring of specific process parameters
  • A47J31/5253—Alarm-clock-controlled mechanisms for coffee- or tea-making apparatus ; Timers for coffee- or tea-making apparatus; Electronic control devices for coffee- or tea-making apparatus the electronic control being based on monitoring of specific process parameters of temperature
• • A—HUMAN NECESSITIES
  • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
  • A23F—COFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
  • A23F5/00—Coffee; Coffee substitutes; Preparations thereof
  • A23F5/24—Extraction of coffee; Coffee extracts; Making instant coffee
  • A23F5/26—Extraction of water-soluble constituents
  • A23F5/262—Extraction of water-soluble constituents the extraction liquid flows through a stationary bed of solid substances, e.g. in percolation columns
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
  • A47J31/00—Apparatus for making beverages
  • A47J31/44—Parts or details or accessories of beverage-making apparatus
  • A47J31/46—Dispensing spouts, pumps, drain valves or like liquid transporting devices
  • A47J31/469—Details of hydraulic circuits
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
  • A47J31/00—Apparatus for making beverages
  • A47J31/44—Parts or details or accessories of beverage-making apparatus
  • A47J31/52—Alarm-clock-controlled mechanisms for coffee- or tea-making apparatus ; Timers for coffee- or tea-making apparatus; Electronic control devices for coffee- or tea-making apparatus
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
  • A47J31/00—Apparatus for making beverages
  • A47J31/44—Parts or details or accessories of beverage-making apparatus
  • A47J31/52—Alarm-clock-controlled mechanisms for coffee- or tea-making apparatus ; Timers for coffee- or tea-making apparatus; Electronic control devices for coffee- or tea-making apparatus
  • A47J31/525—Alarm-clock-controlled mechanisms for coffee- or tea-making apparatus ; Timers for coffee- or tea-making apparatus; Electronic control devices for coffee- or tea-making apparatus the electronic control being based on monitoring of specific process parameters
  • A47J31/5255—Alarm-clock-controlled mechanisms for coffee- or tea-making apparatus ; Timers for coffee- or tea-making apparatus; Electronic control devices for coffee- or tea-making apparatus the electronic control being based on monitoring of specific process parameters of flow rate
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
  • A47J31/00—Apparatus for making beverages
  • A47J31/44—Parts or details or accessories of beverage-making apparatus
  • A47J31/54—Water boiling vessels in beverage making machines
  • A47J31/56—Water boiling vessels in beverage making machines having water-level controls; having temperature controls

Definitions

• the present invention relates to a method for adjusting the output tempera ture of a caffeine-containing hot beverage according to the preamble of claim 1 and egg nen beverage machine for preparing a caffeine-containing hot beverage with definier ter output temperature.
• Cooled hot drinks with a temperature lower than a brewing temperature are becoming increasingly popular.
• the fully automatic production of this product type is therefore suitable both for vending machines for home use, e.g. Coffee machines, but also in particular for vending machines, in particular special so-called coffee machines for commercial use in bars, coffees, bakeries and the like. Of great interest.
• EP 2 238 876 A2 describes a vending machine with a device for di rect introduction of cold water into the coffee, wherein the control of the amount of cold water is carried out via a concentration determination.
• the coffee beverage is first cooled in a heat exchanger. Then the coffee pouring to the coffee spout can be fed cold water through a controllable valve. The control of the valve is carried out by determining the flow rate by means of a flow meter, which can be arranged along the cold water supply lines.
• the generic state of the art is DE 10 201 1076 214 A1.
• the present invention solves this object by the method of claim 1 and by a beverage vending machine with the features of claim 23.
• An inventive method is for adjusting the output temperature of a caffeine-containing hot beverage by a beverage vending machine, preferably by a hot beverage machine, in particular by a coffee machine, ge is suitable.
• the process can optionally be used to prepare the caffeine-containing hot beverage, since it has all the essential preparation steps.
• the hot beverage is in particular a coffee and / or pressoumbles hot beverage.
• the drink dispenser can be designed in particular as a so-called piston machine.
• the actual method then comprises at least the following steps:
• a first step there is a provision of hot water through a boiler.
• supplied water within the boiler to temperatures of preference, more than 75 ° C, more preferably heated from 80 ° C to 96 ° C. Water of this temperature is referred to in the context of the present document as hot water.
• the caffeinated hot beverage is provided by a brewing unit.
• the brewing unit either hot water directly from the boiler or optionally already cooled hot water, e.g. between 50 ° C to 75 ° C, fed.
• the temperature of the caffeinated hot beverage is measured.
• the measuring can preferably take place directly at the outlet of the brewing unit or, more preferably, after the cold water has been added and in particular after a further optional cooling, for example an indirect aftercooling.
• the measured temperature is then preferably compared with at least one setpoint.
• This at least one desired value can be, for example, a pre-given value for the output temperature of the hot beverage to be reached. It can be assumed as the setpoint value but also the temperature to be reached, in particular the output temperature immediately before the caffeine-containing hot beverage is dispensed through an output unit, that is, after various cooling measures.
• controlling and / or regulating the temperature of the caffeinated hot beverage to match the setpoint can be done by cooling.
• the cooling may include a machine-bound first or further cold water addition in the provided by the brewing unit caffeinated hot beverage.
• the brewing unit supplied hot water can be cooled by a maschi nenbone cold water before feeding it into the brewing unit.
• a machine-bound cold water addition means insofar that it is controlled or regulated by the machine, be it by machine inside a line through which the water flows to prepare the hot beverage or through which the already prepared hot beverage flows or through a separate Outlet directly into the vessel into which the prepared hot drink is dispensed.
• the adjustment of the temperature to the target value is at least partially by a supplied by the cold water addition cold water amount as a liquid medium by means of machine-bound Kaltwasserzu, wherein the adjustment or adjusting the temperature by dosing (Zudo Sieren) of the amount of cold water takes place, wherein the dosage a controllable Dosierven til is used.
• cooling in order to equalize the temperature, in addition to the addition of cold water, other possibilities of cooling, e.g. can be provided by a heat exchanger in the context of indirect aftercooling, or by Vorküh len of the supplied cold water.
• the detection of the temperature of the cooled caffeine-containing hot drink, but also the metered cold water and a dosage of cold water allows a ge precise setting of the output coffee temperature which, among other things, also individual recipes for hot drinks, which can be adjusted specifically to the user, the issuing office or a local company chain.
• beverage vending machines in the context of the present invention are both beverage vending machines for home use, e.g. Coffee machines but also in particular Ge automatic beverage machines, especially so-called coffee machines for commercial use in bars, coffees, bakeries and the like. Understand.
• the beverage vending machine can comprise at least the dispensing quantity and the dispensing temperature depending on a selected type of hot beverage over a plurality of data sets.
• the amount and the temperature Tempe can be prepared product-specific by selecting the type of beverage.
• the output beverage can be made product-specific.
• the measurement of the temperature of the caffeine-containing hot beverage can advantageously be carried out after the addition of cold water, depending on this measurement signal, the control tion of the supplied amount of cold water takes place.
• a very direct check and adjustment of the product temperature is preferably achieved immediately prior to its dispensing.
• a control and / or regulation as a function of individual measured variables is always to be understood in the Sin ne of the present invention that the aforementioned control and / or regulation can be done exclusively on the basis of this measurand, al lerdings it is also possible that the controller and / or Control can be influenced by several measurement variables, such as temperatures or flow rates. For example, with reference to the aforementioned temperature of the caffeine-containing hot beverage and the volume of the hot beverage by measuring a volume and / or mass flow in the control of the amount of cold water and possibly also in the temperature of the cold water in the supply in the context of pre-cooling of the cold water to enter.
• the caffeinated hot beverage may be provided in the brew unit, with the cold water supply being downstream of the brew unit.
• the brewing speed is beterter temperature dependent. For a large part of beverages, it is therefore advisable to carry out the brewing with a brewing temperature of over 75 ° C and only then to carry out the cooling by feeding cold water.
• the cold water supply can take place in front of the brewing unit.
• the supplied amount of cold water can be additionally cooled inside the machine by a first cooling device, so that the hot drink supplied cold water can be colder than the water dispenser supplied water. It offers itself for cold water cooling advantageous Peltier cooling and / or Indirektküh development.
• the temperature of the cold water can be advantageously determined before feeding into the caffeinated H exertge or in the brewing unit supplied water for producing the caffeine term hot beverage and the control of the addition amount of the supplied cold water can be in function of the determined temperature he follow. This option offers a more detailed and even more accurate dosing of the cold water.
• the caffeine-containing hot beverage can also be advantageously cooled after the cold water addition in a second cooling device to reach a final temperature. It is clear that the cold water addition changes the strength or concentration of the hot water. Therefore, in the case of some drinks, a dosage of Kaltwas water can only be up to an upper limit of cold water.
• the target temperature for the task of the hot beverage can also be adjusted in this case by the second cooling device, which may be preferably designed as a heat exchanger.
• the second cooling device which may be preferably designed as a heat exchanger.
• any other beverage can be fine-tuned again by the post-cooling in terms of temperature, unless this is already possible on the cold water supply.
• the measurement according to the invention of the temperature of the caffeinated hot beverage can be carried out by the second cooling device after the cold water addition and the passage of the caffeinated H necessarilyge. Alternatively or additionally, however, a measurement of the temperature of the caffeine-containing hot drink can also be carried out before the cold water addition.
• Energetically and structurally advantageous and water-saving part of the Kaltwas sers, in particular the cooled cooling water, can be used to operate the seconddevorrich device.
• the part of the cold water to operate the second cooling device can advantageously the partial cold water before the first cooling device partially or completely mannge leads.
• the throttle valve is used.
• a throttle valve is a volume flow limiting electrically adjustable throttle valve, in particular a volume flow limiting electrically adjustable throttle valve, particularly preferred.
• the valve can also be mass flow limited. With known viscosity, the conversion is readily possible.
• the vending machine can have a control and / or evaluation unit with a CPU and a data memory, wherein corresponding product-specific data records, e.g. Temperatures, volumes, etc. are deposited at various points of the process or in the drinks vending machine. Depending on the device type, these data records can also be device-specific at the same time.
• product-specific data records e.g. Temperatures, volumes, etc.
• the brewing unit supplied hot water volume and / or mass flow and the cold water volume and / or mass flow can be determined activities to optimize the Auslaufeigen
• Cooling both direct cooling and aftercooling, can be carried out using temperature profiles and / or profiles, that is to say temperature measurements taking into account the passage of time.
• Corresponding temperature profiles and / or profiles can be stored as setpoint data records.
• the cold water can advantageously before the direct feed into the caffeine-containing hot beverage or the supply to the brewing unit supplied water for the development of the caffeine-containing hot beverage in an indirect cooling of the caffeinated hot beverage with supplied cold water amount of the second cooling device zugelei tet.
• the beverage dispenser may have at least two modes of operation, wherein in a first mode of operation, the caffeinated hot beverage or the water supplied to the brewer for making the caffeinated hot beverage is directly via a machine-bound cold water addition, and wherein in a second mode, a caffeinated hot beverage is provided without cooling machine-bound cold water addition is output.
• the drinks vending machine can be used variably for hot drinks and chilled hot drinks.
• the cooling of the caffeine-containing hot beverage or the brewing unit supplied water to produce the caffeine-containing hot beverage by direct feed via a machine-bound cold water addition can be made after an indirect internal machines further cooling the externally supplied cold water for Kaltwas serzugabe.
• the supply of cold water as a direct cooling can after a direct or indi rect (further machine-internal) cooling of the cold water, in particular by the first cooling device, or before an indirect cooling of the caffeinated hot drink, in particular by the second cooling device done.
• An inventive drinks machine for preparing a caffeine-containing hot drink may preferably be formed for carrying out a method according to any one of the preceding claims.
• the caffeinated hot drink is included in particular issued at a defined output temperature.
• the temperature can be measured and adapted to a predetermined setpoint.
• the setpoint value can be set, for example, by the user or specified in the manner of a beverage selected by the user.
• It comprises a water inlet, a hot water and a cold water line, a boiler for heating and / or providing hot water in the Hndwasserlei device, a brewing unit for providing the caffeine-containing hot beverage in the hot water line and an output device at the end of the hot water line for dispensing the caffeine-containing hot beverage the drinks vending machine.
• the hot water line has a cold water supply to feed cold water into the hot water in front of the brewing unit or supply of cold water in the Bristolge introduced caffeine-containing hot drink, the drinks machine a temperature sensor for determining a temperature of the caffeinated hot beverage after its provision by the brewing unit, preferably and advantageous for determining the temperature in or immediately before the output unit, wherein the addition of the cold water takes place in dependence on the temperature determined by the temperature sensor.
• the temperature sensor By arranging the temperature sensor in the area of the dispensing unit, it is possible to achieve a very exact setting of the temperature, e.g. by readjusting individual refrigerations, e.g. direct cooling or indirect cooling.
• the drinks vending machine can advantageously have a homogenizer, which is arranged in accordance with the cold water supply line.
• the beverage dispenser can advantageously have a second cooling device for indi rect cooling of the caffeine-containing hot drink, which is arranged after the flow of th Kaltwasserzu Ober strömungstech, and preferably after the homogenizer to. Further advantageously, the beverage dispenser, a first cooling device for pre-cooling of the cold water prior to its delivery into the hot water before Brühein unit or supply of cold water in the provided caffeinated H requirege have beverage.
• the drinks dispenser may have a temperature sensor for adjusting the cold water temperature by the first cooling device.
• the beverage dispenser may also have a temperature sensor for determining the temperature of the provided uncooled caffeinated Hndge drink, which is arranged after the brewing unit and a cooling supply for supplying cold water in the caffeinated hot beverage provided.
• the drinks vending machine has a flow meter, wel ches is arranged in the hot water line. This can be used to determine the amount of water supplied to the boiler and / or the brewing unit.
• the vending machine may additionally or alternatively have a flow meter, which is arranged in the cold water line. This can be used to determin the determination of the second cooling device supplied amount of cold water and / or the supply of cold water in the hot water before the brewing unit or to conduct cold water in the caffeinated hot drink provided who the.
• the flow control of the cold water within the drinks car mats be realized such that the cold water is coolable by the first cooling device, the second cooling device can be supplied as a cooling medium for cooling the caffeinated hot beverage acted upon with cold water and at the conclusion in an uncooled caffeinated hot beverage introduced is.
• Fig. 1 schematic representation of a first embodiment of an inventions to the invention beverage machines with controlled cold water supply in a caffeinated hot beverage;
• Fig. 2 schematic representation of a second embodiment of an inventions to the invention beverage machines with regulated cold water supply in a caffeinated hot beverage;
• FIG. 3 schematic representation of a third embodiment of an inventions
• beverage machines with controlled cold water supply in a caffeinated hot beverage
• FIG. 4 shows a schematic representation of a further embodiment variant of a beverage machine according to the invention.
• Fig. 5 schematic representation of a fifth embodiment of an inventions
• Fig. 6 schematic representation of a sixth embodiment of an inventions to the invention drinks machines.
• Fig. 1 shows a first embodiment of a beverage dispenser 1 according to the present invention.
• the illustrated embodiment includes several options for cooling the caffeinated hot beverage and the supplied cold water before it is fed to the hot beverage. These options can of course also be implemented separately in a variety of other variants of the proceedings, analogously or in a modified form.
• the beverage dispenser 1 is designed here as a coffee machine. It has a water connection 2, which can be connected, for example, to a conventional tap, a domestic line or the like.
• a supply line Starting from the water connection 2 extends a supply line. Along the line to a pump 3 is arranged, which promotes the drinks machine 1 supplied water supplied and / or pressurized.
• the feed line then splits into a cold water line 4 and a hot water line. 5, wherein the inlet in both lines 4 and 5 advises by a Strömungsmessge 6 and 7 for monitoring the respective volume and / or mass flow in the respective line, that is, the hot water and the cold water line.
• a respective flow meter 6 and 7 after the division of the supply line to the cold water pipe 4 or the hot water pipe 5 is respectively arranged.
• Fluidically behind the flow meter 7 is along the H discloseiganlei device 5, a check valve 8, in particular a spring-loaded check valve 8, respectively. Thereafter, along the hot water line 5, a boiler 9 is arranged, wel cher the supplied water heated to a temperature in the preferred range of 80 ° C to 96 ° C.
• Fluidically behind the boiler 9 is a directional control valve 10, preferably designed as a 2/2 way valve, in particular as an electrically operated 2/2 way valve with provision by a spring arranged to forward a discrete What sermenge in a brewing unit 1.
• the directional control valve 10 may interact with a control and / or evaluation unit 34 of the beverage keautomaten or communicate wirelessly or wired kommuni.
• a control and / or evaluation unit 34 of the beverage keautomaten or communicate wirelessly or wired kommuni.
• less or more water is supplied to the brewing unit 1 1.
• different amounts of water is needed for different sized Kaffes.
• the ingredients for the preparation of caffeinhalti gene hot drink are the ingredients for the preparation of caffeinhalti gene hot drink. This may preferably be ground coffee.
• the caffeinated hot beverage is thus provided at a temperature of typically above 70 ° C.
• a valve 12 Fluidically behind the brewing unit 1 1 is a valve 12 as a directional control valve, preferably before as a 3/2 way valve, in particular as electrically operated 2/2 way valve with provision by a spring arranged, bringing a portion of the caffeinated hot beverage or the entire amount of caffeinated hot beverage can be passed into a branching from the hot water line bypass 21.
• the directional control valve 12 is switched by the control and / or evaluation unit 34, depending on which type of drink and which beverage temperature have been selected by the user.
• Flowwise after the directional control valve 12 is a supply line 29 of cooled caffeinated hot beverage from the secondary line 21 is arranged.
• the uncooled or cooled caffeinated hot beverage may be delivered to an output unit 13 comprising a directional control valve, preferably as a 3/2-way valve, in particular as an electrically operated 2/2-way valve with spring return, for dispensing 15 into a vessel, e.g. a cup or a mug, who forwarded the.
• the output unit 13 may have one or more further lines 14.
• a directional control valve 17 Fluidically after the flow meter 6, along the cold water line 4, a directional control valve 17, preferably as a 2/2 way valve, in particular as an electrically operated 2/2 way valve with provision by a spring, be arranged.
• This directional control valve 17 serves to control the amount of water to be cooled and defines a quantity of cold water. It can also be operated by the control and / or evaluation unit 34.
• a return line 24 which returns cold water from a second cooling device 20 for indirect cooling of the caffeinated hot beverage.
• a check valve 25 is arranged, which ensures that the cold water from the cold water pipe 4 is not passed in a wrong direction through the second cooling device 20, which may be preferably formed as a heat exchanger.
• the cold water at a temperature T1 is then passed through a first device 18devorrich.
• This cooling device can preferably serve the indirect cooling of the cold water to a temperature T2, wherein T2 is smaller, preferably at least by 2 Kelvin, more preferably at least by 5 Kelvin, smaller than T2.
• T2 is smaller, preferably at least by 2 Kelvin, more preferably at least by 5 Kelvin, smaller than T2.
• this can be a Peltier element or another type of cooling is set.
• the present application distinguishes between direct cooling in which a cold medium is poured into a warm medium, e.g. cold water is introduced into warm water, and in an indirect cooling, wherein the cooling takes place without supplying a medium into another medium.
• a temperature sensor 19 for determining the cold water temperature after the first cooling device 18 may be arranged.
• an actual value 32 is determined, which is passed to the control and / or evaluation unit 34. This compares the actual value 32 with a for the type of drink selected and / or for the selected temperature of the beverage for the predefined amount of cold water through the valve 17 and determines a control signal 33 for setting the first cooling device 18, in particular the cooling capacity.
• the cooled cold water at the temperature T2 is fed as a cooling medium for indirect cooling of the caffeine-containing hot beverage of the second cooling device 20.
• the cooling medium is guided in a separate cooling circuit, so that a heat exchange, but no mass transfer rule between the cooling medium and the caffeine-containing hot beverage, takes place.
• the cooling water can be discharged via a metering valve 27 designed as a throttle valve, optionally with a metered dose to the un cooled caffeine-containing hot beverage.
• the metering valve 27 is arranged on a leading away from the second cooling device 20 cold water discharge line 22, which allows a metered dose supply of cold water from the Kaltwas serabtechnisch 22 into the secondary line 21.
• the cold water discharge line 22 is connected to the return line 24, or it opens into this return line 24 along which a check valve 25, in particular a spring-loaded check valve is arranged.
• a temperature sensor 28 for determining the temperature of the cooled hot beverage as it is output to the user, is arranged.
• This temperature sensor 28 communicates with the control and / or evaluation unit 34 by transmitting a measurement signal 30. This is compared via an actual value / setpoint comparison for the selected beverage and the selected Tempe temperature and there is a control signal 31 to the metering valve 27 for the transmission of the Amount of cold water in the uncooled caffeinated hot drink transmis gene. This defined amount is then added.
• a homogenizer 26 may be arranged for optimum mixing of the caffeinated hot beverage and the supplied water. In the example shown in Fig. 1, the direct cold water supply takes place in the uncooled caffeinated hard drink after the brewing process in the brewing unit 1 1. Furthermore, after the supply of cold water, an indirect aftercooling of the caffeinated hard drink by the second cooling device 20th
• the regulation of the cold water supply takes place in dependence of the mixing temperature after the indirect aftercooling has taken place. Furthermore, the cold water is cooled by the first cooling device 18 before the introduction into the uncooled caffeinated hard drink.
• Fig. 1 shows several options of cooling, the position in the process or in the drinks vending machine may vary and which may also be partially seen only optional before. These options will be briefly discussed below.
• the cold water supply takes place in Fig. 1 after the brewing process in the brewing unit 1 1.
• Other positions of the cold water supply are possible.
• a machine-bound cold water addition means insofar that it is controlled or regulated by the machine and thus initiated, be it by maschi nenintern in a line through which the water flows to prepare the Fl regardinggeträn kes or through which the already prepared hard liquor flows or through A separate outlet directly into the vessel into which the prepared hard drink is dispensed (the last variant is not shown here).
• An indirect after-cooling can follow it by an optional second cooling device 20.
• the control of the cold water supply takes place in dependence on the mixing temperature, which is detected by the temperature sensor 28. Again, the temperature can be recorded at another position. Furthermore, also a regulation by means of another temperature, e.g. the temperature of the dilution and / or cold water before merging, possible.
• the supplied cold water is actively cooled by the optionally provided first cooling device 18.
• Fig. 2 shows a second embodiment of a beverage dispenser 41 according to the present invention.
• FIG. 1 This has, analogously to FIG. 1, a water connection 42 from which a feed line with a pump 43 extends.
• the feed line is divided into a cold water line 44 and a dilution water line 45, each having a flowmeter 46, 47.
• a check valve 48 Fluidically after the flow meter 47 along the dilute water line 45, a check valve 48, in particular a spring-loaded check valve, followed by a boiler 49, which heats the water supplied to a temperature in the preferred range of 80 ° C to 96 ° C.
• the boiler 49 is a directional control valve 50 in an analogous embodiment to Fig. 1 is arranged, for forwarding a discrete amount of water in a brewing unit 51st Inter mediate the control valve 50 and the brewing unit 51 is a first supply line 62 of cold water, hereinafter also called cold water supply, arranged.
• the function of the brewing unit 51 is already described in FIG. 1.
• the brewing unit 51 supplied water can be adjusted to a lower temperature than in Fig. 1st
• a temperature sensor 52 for determining the Kaf is temperature after the brewing unit 51 is arranged.
• This temperature sensor 52 is used in combination with the flow rates determined by the flow meters 46 and 47 for adjusting the cold water and the supply line fed cold water amount, e.g. by adjusting individual valves, e.g. of one or more control or metering valves shown in FIG. 2, and / or the pump 43.
• a second supply line 63 is arranged by cold water.
• a flomogenizer 66 is arranged, followed by a second cooling device 60 for indirect aftercooling, in particular of a caffeinated hard drink already cooled by direct cooling.
• a further temperature sensor 68 is arranged to determine the output of the cooled caffeine-containing hot beverage.
• the uncooled or cooled caffeine-containing hot beverage can be dispensed to an output unit 53, with a 3/2-way valve analogous to FIG. 1 and optionally comprising further derivatives 54.
• a directional control valve 57 may be arranged in an analogous embodiment to FIG. 1.
• the amount of cold water supplied can also be determined by the control and / or evaluation unit 74 based on the volumetric flow and / or mass flow determined by the flowmeter 46 in combination with the determined temperature at the temperature sensor 52.
• the cold water at a temperature T1 can then be passed through a firstdevorrich device 58, whereby the cold water to a temperature T2 (T2 ⁇ T1) is cooled.
• the first cooling device 58 is adjusted by a signal 73 of the control and / or evaluation unit 74, which compares a measurement signal 72 of the firstdevor device 58 downstream further temperature sensor 59 with a setpoint ver.
• a metering valve 67 Downstream of the further temperature sensor 59 is a metering valve 67 in the form of egg nes throttle valve in an analogous configuration to the metering valve 27 of FIG. 1, which adjusts the amount of brewed caffeinated hot beverage directly fed Kaltwas sers. This takes place as a function of a measurement signal 70 of a mixing temperature determined by the temperature sensor 68 and of a control signal 71 ascertained by the control and / or evaluation unit as a function of the measurement signal 70, which is output to the throttle valve 67.
• the set by the metering valve 67 amount of cold water can be introduced directly via a feed line 63 and feed line into the outlet 61 of the brewing unit 51 who the.
• the amount of cold water set by the metering valve 67 can also be supplied to the second cooling device 60 as a cooling medium and then fed to the hot water in front of the brewing unit 51 via the feed 62 or the feed line.
• the hot water may be liquid or even partially or completely vapor and supplied from the boiler of the Brü hü.
• the temperature measurement of the mixing temperature by the temperature sensor 68 at the outlet of the second cooling device 60 serves to control the metering valve 71 by an actual value / setpoint comparison.
• the beverage dispenser 41 allows a cold water supply or Kaltfelzuga be in the hot water in front of the brewing unit 51 and / or a cold water supply or addition in the provided caffeinated hot beverage after its provision in the brewing unit 51st
• Indirect cooling of the already pre-cooled by direct introduction of cold water hot beverage can be switched on or off as needed.
• the control of the cold water supply can be done depending on the mixing tempera ture of the issued caffeinated hot beverage. Furthermore, there is active cooling of the cold water as a function of the temperature of the cold water at the temperature sensor 59.
• Fig. 2 shows several options of cooling, the position in the process or in the drinks vending machine may vary and which may also be partially seen only optional before. These options will be briefly discussed below.
• the cold water supply takes place in FIG. 2 either via the line 63 after the brewing process in the brewing unit 51 or via the line 62 before the brewing process in the brewing unit 51. It can also be provided in each case only one line 62 or 63.
• An indirect after-cooling is carried out by the second cooling device 60. This is le diglich optional provided.
• the regulation of the cold water supply can be carried out in dependence on the mixing temperature, which is detected by the temperature sensor 68. Again, the temperature can be detected at another position. Furthermore, a Rege ment based on another temperature, for example, the temperature of the hot and / or cold water before merging, possible.
• the supplied cold water is actively cooled by the optionally provided first cooling device 58.
• the cooling of the cold water can optionally be controlled by the temperature sensor 59.
• the temperature and the amount of cold water can alternatively or additionally be effected by means of a measurement made as a function of a temperature sensor 52.
• Fig. 3 shows a third embodiment of a beverage machine according to the invention mats 81 with a water connection 82 from which a feed line with egg ner pump 83 extends. After the pump 83, the feed line branches into a cold water line 84 and a hot water line 85. The feed rate in the two aforementioned water lines is by a respective flow meter 86, 87 he summarized and adjusted by a control and / or evaluation unit 1 14.
• the hot water line 85 has analogously to FIGS. 1 and 2, in addition, a check valve 88 followed by a boiler 89 and arranged in the flow of the boiler 89 directional valve 90, in an analogous training to Fig. 1 and 2.
• a first supply line 105 of cold water is arranged between the directional control valve 90 and a downstream brewing unit 91.
• a temperature sensor 92 for determining the coffee temperature after the brewing unit 91 is arranged. This temperature sensor 92 is used in combination with the flow meters 86 and 87 to adjust the hot and cold water line supplied amount of cold water.
• Fluidically behind the temperature sensor 92 is a directional control valve 93, preferably, as a 3/2 way valve, in particular as electrically operated 2/2 way valve with provision by a spring arranged, which a direct forwarding of the caffeinated hot beverage to an output unit 94 comprising a directional control valve, preferably a 3/2-way valve, and possibly further derivatives, allows the output 105 of the caffeinated hot beverage.
• a directional control valve 93 preferably, as a 3/2 way valve, in particular as electrically operated 2/2 way valve with provision by a spring arranged, which a direct forwarding of the caffeinated hot beverage to an output unit 94 comprising a directional control valve, preferably a 3/2-way valve, and possibly further derivatives, allows the output 105 of the caffeinated hot beverage.
• the directional control valve 93 can redirect the brewed amount of caffeine-containing hot beverage into a secondary line.
• this secondary line is a Quzulei device 103 of cold water.
• caffeine-containing hot beverage was fed to a homogenizer 106 and then a second cooling device 100 for indirect cooling of the kof fine hot beverage to a mixing temperature or target or output tempera ture are supplied.
• a further temperature sensor Tem 108 is arranged to determine the output temperature of the caffeinhalti gene hot beverage, without taking into account the supplied through the supply line 96 amount of milk.
• the cold water line 84 has a flow meter 86 for controlling, for example, a arranged on the cold water line 84 the directional control valve 97, which sends a measurement signal 1 18 to a control and / or Auswer teech 1 14.
• the control and / or evaluation unit 1 14 can set the directional control valve 97 on the basis of the measurement signal, and optionally taking into account the measurement signal 1 13 averaged by the temperature sensor 92.
• the flow meter 87 of the hot water line 85 to which e.g. the power of the pump 83 and / or the opening degree of the directional control valve 90 are adjustable.
• the measurement signal of the temperature sensor 92 can be taken into account.
• the cold water at a temperature T1 can then be passed through a first devicedevorrich 98, whereby the cold water to a temperature T2 (T2 ⁇ T1) is cooled.
• the setting of the first cooling device 98 is carried out by a signal 1 16 of the control and / or evaluation unit 1 14, which compares a measuring signal 1 15 of the ers th cooling device 98 downstream further temperature sensor 99 with a target value.
• a first metering valve 101 Downstream of the further temperature sensor 99 is a first metering valve 101 as a throttle valve, which adjusts the amount of cold water, which is supplied to the brewed caffeine-containing hot beverage directly via a cold water supply to the brewing unit 91.
• the cold water from the metering valve 101 as coolant via a coolant supply line 102 of the second cooling device 100 are fed passes.
• a second metering valve 104 is arranged as a throttle valve, which via a supply line 105 cold water after passing through the cooling device 100 of the hot water line 85 before the brewing. unit 91.
• the draining off of the coolant of the second cooling device 100 may take place through a return line 96 in front of the first cooling device 98.
• a check valve 95 is preferably arranged.
• Both the signals 1 1 1 and 1 12 for setting the first metering valve 101 and the second metering valve 102 are in response to a measurement signal 1 10 of Tem peratursensors 108 for determining the target or output temperature of caffeinehalti gene hot drink by a control and / or evaluation unit 1 14 generated.
• the control of the first cooling device 1 16 can be carried out analogously to FIG. 1 or 2.
• Fig. 3 shows several options of cooling, whose position in the process or in the drinks vending machine may vary and which may also be partially seen only optional before. These options will be briefly discussed below.
• the cold water supply takes place in FIG. 3 either via the line 103 after the brewing process in the brewing unit 91 or via the line 105 before the brewing process in the brewing unit 91. It can also be provided only one line 103 or 105 in each case.
• An indirect after-cooling is carried out by the second cooling device 100. This is le diglich optional provided.
• the regulation of the cold water supply can be carried out in dependence on the mixing tempera ture, which is detected by the temperature sensor 99. Again, the temperature can be detected at another position. Furthermore, a regulation based on another temperature, e.g. the temperature of the hot and / or cold water before merging, possible.
• the supplied cold water is actively cooled by the optionally provided first cooling device 98.
• the cooling of the cold water can optionally be controlled by the temperature sensor 99.
• the temperature and / or the amount of cold water can alternatively or additionally be controlled by a measuring device which is activated as a function of a temperature sensor 92. be made.
• the two metering valves 101 and 104 can be controlled by the control and / or evaluation unit 1 14 or optionally only egg nes of the two metering valves.
• Fig. 4 shows a fourth embodiment of a Getränkeau tomatoes 121 according to the invention.
• This has a water connection 122 with an adjoining the supply line with a pump 123.
• the supply line then branches into a cold water line 124 and a dilution water line 125, each with a flow meter 126, 127.
• Flinter the flow meter 127 is at the Fl effetementlei device 125, a check valve 128 analogous to FIG. 1 -3.
• a boiler 129 is arranged on the dilution water line 125.
• a directional control valve 130 is arranged followed by a brewing unit 131. The function of a individual components is explained in the embodiment of Fig. 1 in detail.
• the brewed caffeinated hard drink then cold water is fed by direct line and then passed through a Flomogenisator 132. This mixture is then passed through a second cooling device 140 and cooled. After passing through the second cooling device, the temperature of the cooled th caffeinated hard drink is determined by a temperature sensor 148. The measured value 143 is passed to a control and / or evaluation unit 144, which adjusts the temperature of the cold water supplied to the hard drink accordingly.
• the beverage vending machine 121 has an output unit 133 analogous to FIG. 1 -3 from the task 135 in a vessel.
• the output unit 133 may have further leads 134.
• the cold water line 124 has, analogously to FIG. 1, a directional control valve 137 a first cooling device 138 and a temperature sensor 139.
• the temperature sensor 139 serves to adjust the temperature of the cold water by means of the control and / or evaluation unit 144, by actual value and setpoint comparison of the measurement signal 146 of the temperature sensor 139. Subsequently, the control and / or evaluation unit 144 sends a control signal to the first cooling device 138 further.
• a metering valve 141 is arranged as a throttle valve wel ches the amount of cold water to the supply line to the second cooling device 140 and the subsequent amount of cold water for direct feed into the caffeine content. dosed hot beverage.
• This metering valve 141 is controlled by a control signal 145 in dependence on the temperature of the temperature sensor 148.
• the variant of FIG. 4 has a cold water supply after the brewing process and an optional aftercooling.
• the cold water supply is dependent on the mixing temperature.
• a likewise optional active cooling of the cold water is realized by the first cooling device 138.
• FIG. 5 shows a beverage dispenser 151 with a water connection 152, a pump 153, a cold water line 154 and a hot water line 155, each with a flow meter 156, 157.
• the hot water line 155 also has a check valve 158 analogous to FIGS. 1-4, a boiler 159 , a directional control valve 160 and ei ne brewing unit 161, which serves to produce an uncooled caffeinated hot beverage.
• a directional control valve 167 is designed as a throttle valve metering valve 171 for measuring a specific amount of cold water to be metered into the uncooled caffeinated hot beverage. This takes place via a secondary line 172 in the flow of the brewing unit 161st The cold water / hot beverage mixture can then be mixed in a homogenizer. At closing, the destination or output temperature is determined by a temperature sensor 178.
• the output 165 of the caffeine-containing hot beverage is carried out by an output unit 163 comprising a directional control valve and possibly further derivatives 164.
• the temperature sensor 178 determines a measurement signal 175, transmits this to a control and / or evaluation unit 174 and outputs a control signal 173 to the metering valve 171 for metering the directly supplied amount of cold water on.
• Fig. 5 shows a variant without indirect aftercooling after the cold water addition.
• FIG. 6 shows a further embodiment of a beverage dispenser 181 with egg nem water connection 182, a pump 183, a cold water line 184 and a hot water line 185, each with a flow meter 186, 187.
• the hot water line 185 also has a check valve 188 analogous to FIG. 5, a boiler 189, a directional control valve 190, in an analogous embodiment to FIGS. 1 to 4, followed by a ner supply line 206 of cold water in front of a brewing unit 191 and one of the brewing unit 191 fluidically upstream homogenizer 196.
• a directional control valve 192 preferably a 3/2 way valve arranged to supply the enriched with cold water hot beverage to a second cooling device 200 for indirect aftercooling or Metrozulei tion of the hot beverage without indirect aftercooling to an output unit 193 to summarize optional further derivatives 194 and a directional control valve.
• this unit it follows the edition 195 of the hot drink.
• the second cooling device 200 is a temperature sensor 203 fluidly downstream or arranged, which determines a measurement signal 209 of the cooled H Employge drink and this passes on to a control and / or evaluation unit 21 1.
• a directional control valve 197 a return line 205 of cooling water from the second cooling device 200 with a check valve 199, ei ne downstream first cooling device 198 with a downstream sensor 202 and a controller of the first cooling device analogous to the embodiment of Figs. 1-5 arranged.
• the cold water is passed as a coolant through the seconddevorrich device 200 and then fed either the return line 205 or via a throttle valve designed as a metering valve 204 of the supply line 206, which by a control signal 206 in response to a measurement signal 209 of the temperature sensor 203, fed.
• the temperature is measured, before the caffeine-containing hot beverage is dispensed and after the second cooling device has cooled down indirectly.
• the cooling takes place in Fig. 1 -6 by an indirect aftercooling by the second cooling device and by the direct cooling by supplying cold water over at least one metering valve.
• the opening of the preferably electrically adjustable metering valve and thus the amount of cold water to be supplied is controlled depending on the desired temperature or target temperature or output temperature after the last cooling.
• a continuous monitoring by the corresponding temperature sensor and a correspondingly adapted cold water supply is controlled depending on the desired temperature or target temperature or output temperature after the last cooling.
• the temperature of the supplied Kaltwas sers stabilized by a "pre-cooling" level by means of a first cooling device at low Ni.
• pre-cooling enables the system to compensate for the temperature fluctuation of the used cold water and thereby compensate for line and / or ambient temperature fluctuations.
• the pre-cooling allows optimum adjustment of the mixing temperature or the output temperature of the caffeinated hot drink, because the lower the temperature of the water supplied, the lower the target range of the mixing temperature can be set. The lower the temperature of the supplied water, the less cold water is needed to reach the target range of the mixing temperature.
• Such pre-cooling of the cold water can be realized by a storage or through-run cooler and be electrically, water or coolant out leads. Particularly advantageous is a considered by a Peltier element Lei area considered.
• the temperature of the cold water is preferably measured after and / or in the water cooling, in particular after and / or in the first cooling device. Before preferably, depending on the measured temperature, the cooling of the cold water regulated by a control and / or evaluation and / or adjusted.
• FIGS. 2 and 3 realized by a position of the valves of the hot water and cold water line, taking into account the flow in the respective line.
• Va variants of the setting eg by setting the one or more Dosierven valves are conceivable.
• the quantities can be monitored and adjusted by measuring the flow rate, for example by using impeller meters or magnetic-inductive flowmeters.
• the metering valve or the metering valves in combination with a control and / or evaluation unit, make it possible to equalize the volume flows for optimal mixing of the brewed coffee with the cold water and ensure uniform discharge properties.
• Figs. 1-6 show various variants for a controlled cold water addition to a caffeinated hard drink within a drinks vending machine.
• the dilute water / cold water mixture can preferably be fed to a flomogeniser before or in the output unit before the temperature measurement before the evaluation, so that optimum mixing and heat energy transfer can be ensured by means of flomogenizing.
• the cold water can advantageously before the direct feed into the caffeine-containing diligence drink by an indirect heat transfer, in particular by the vorgenann te second cooling device, are passed.
• the mixture e.g. the coffee-cold water mixture
• the brewed coffee via a valve behind the brewing unit, optionally be forwarded directly to the output unit or gelei in the cooling system with the supply of the cold water and possibly the first and / or second cooling device.
• the direct supply line bypassing the cooling system is advantageous in order not to unnecessarily lower the temperature of a non-cooling coffee beverage.
• the dosing unit can be arranged in an indirect post-cooling, preferably after cooling, preferably at the intersection between the Fl discloseiganlei device and the secondary line.
• a return of cold water in the cooling circuit in particular before the first cooling device provided to a, adjustable via the metering, proportionate amount of cold water over the entire reference time, to feed the coffee while the Indirect aftercooling continue to flow through.
• a hot drink specific record comprising amounts of water (Ge pot size), mixing ratio (coffee concentration), water temperatures and / or set temperature provided.
• cold water can be pumped through the cooling system with the pump and directed into a drain until the temperature of the first measuring point of the temperature measurement after the aftercooling approximately the tempera ture of the measuring point in the cold water line, which downstream measuring point of a precooling of the cold water is, corresponds.
• This step is used to dispose of the warm water from the pipes and pre-cooling the pipes and components of the drinks vending machine.
• the brewing process can be started in a second step.
• the brewed caffeinated hot beverage e.g. hot coffee
• optionally fed via a valve of the second cooling device and parallel to the coffee cold water is supplied from a cold water supply.
• the supply takes place as a function of the measured temperature after the aftercooling by the second cooling device in conjunction with the cold water temperature, which is determined after the first cooling device, or from the absence of such a cooling device in the cold water line. Since it may preferably be a so-called readjustment, provided that the determined temperature after post-cooling exceeds a target value.
• the cold water volume flow can be controlled via the metering valve and, as required, for example in the event of a setpoint deviation, the temperature of the cold water in the cold water cooling and / or the supplied water quantities can be adjusted. be fit.
• Chilled cold water which is not passed through the volume flow and / or mass flow control of the metering valve in the coffee, can be fed in a fourth step on the return line back into the cold water line or the cold water system. It thus creates a cooling circuit that improves the efficiency of the water cooling and ensures the flow through the indirect aftercooling, even at low direct additions to the coffee.
• the coffee / cold water mixture can be homogenized after the supply of cold water in a further step to ensure optimum mixing and heat transfer.
• the cooled coffee can be passed through the indirect aftercooling which, by the heat transfer with a coolant in the form of an indirect cooling, further lowers the temperature.

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• Engineering & Computer Science (AREA)
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• Life Sciences & Earth Sciences (AREA)
• Chemical & Material Sciences (AREA)
• Polymers & Plastics (AREA)
• Physics & Mathematics (AREA)
• Fluid Mechanics (AREA)
• Apparatus For Making Beverages (AREA)
• Devices For Dispensing Beverages (AREA)

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• 2019
  • 2019-05-16 EP EP19725954.2A patent/EP3793414A1/de active Pending
  • 2019-05-16 WO PCT/EP2019/062581 patent/WO2019219798A1/de active Application Filing
  • 2019-05-16 US US17/054,498 patent/US11925289B2/en active Active
  • 2019-05-16 JP JP2020564375A patent/JP7401466B2/ja active Active

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