EP0172385A2 - Device for mixing beverages - Google Patents

Device for mixing beverages Download PDF

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Publication number
EP0172385A2
EP0172385A2 EP85108643A EP85108643A EP0172385A2 EP 0172385 A2 EP0172385 A2 EP 0172385A2 EP 85108643 A EP85108643 A EP 85108643A EP 85108643 A EP85108643 A EP 85108643A EP 0172385 A2 EP0172385 A2 EP 0172385A2
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EP
European Patent Office
Prior art keywords
piston
flow
restoring force
control valve
arrangement according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP85108643A
Other languages
German (de)
French (fr)
Other versions
EP0172385A3 (en
EP0172385B1 (en
Inventor
Matthias Dipl.-Ing. Aschberger
Karlheinz Dipl.-Ing. Färber
Ulrich Dipl.-Ing. Wolf
Anton Dipl.-Ing. Deininger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOSCH-SIEMENS HAUSGERAETE GMBH
Coca Cola Co
Original Assignee
Coca Cola Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19843430901 external-priority patent/DE3430901A1/en
Priority claimed from DE19843430953 external-priority patent/DE3430953A1/en
Application filed by Coca Cola Co filed Critical Coca Cola Co
Priority to AT85108643T priority Critical patent/ATE49137T1/en
Publication of EP0172385A2 publication Critical patent/EP0172385A2/en
Publication of EP0172385A3 publication Critical patent/EP0172385A3/en
Application granted granted Critical
Publication of EP0172385B1 publication Critical patent/EP0172385B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D1/00—Apparatus or devices for dispensing beverages on draught
    • B67D1/08—Details
    • B67D1/12—Flow or pressure control devices or systems, e.g. valves, gas pressure control, level control in storage containers
    • B67D1/1277—Flow control valves
    • B67D1/1279—Flow control valves regulating the flow
    • B67D1/1281—Flow control valves regulating the flow responsive to pressure
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F13/00—Coin-freed apparatus for controlling dispensing or fluids, semiliquids or granular material from reservoirs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B01F35/712—Feed mechanisms for feeding fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
    • B01F35/71805—Feed mechanisms characterised by the means for feeding the components to the mixer using valves, gates, orifices or openings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D1/00—Apparatus or devices for dispensing beverages on draught
    • B67D1/08—Details
    • B67D1/12—Flow or pressure control devices or systems, e.g. valves, gas pressure control, level control in storage containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/06—Details or accessories
    • B67D7/74—Devices for mixing two or more different liquids to be transferred
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/07—Carbonators

Definitions

  • the present invention relates to an arrangement for mixing beverages, in particular from a liquid base substance, in particular from carbonated water, and a beverage concentrate.
  • a beverage concentrate or optionally one of several beverage concentrates can be mixed with carbonated water to form a soft drink immediately before consumption.
  • the carbonated water required for this purpose is cooled and stored under pressure. In a known manner, this carbonized water is output for the mixing process via a shut-off valve and, if appropriate, via an expansion valve downstream of this.
  • the quality of the mixed drink depends to a large extent on the mixing ratio of beverage concentrate and carbonated water. For this reason, it is essential to take measures that are suitable to ensure the required mixing ratio under the different conditions that are normal in normal operation. For example, it is known to determine the amount of beverage concentrate in portions via metering chambers.
  • the object of the present invention is now to provide an arrangement by which an exact determination of the dispensing quantities of liquids is made possible.
  • An arrangement which meets these requirements is characterized in accordance with the invention in that a flow control valve controlling a constant flow irrespective of the pressure of the supplied liquid is directly connected to an outlet shut-off valve and that a timing device is assigned to the outlet shut-off valve.
  • An arrangement constructed according to these features of the invention follows the concept of assigning different functional requirements to different functional units and arranging them as closely as possible to one another.
  • a functional requirement is given in that the opening time of the dispensing valve, which is predetermined by the time control, is realized as precisely as possible. For this reason, an outlet shut-off valve is arranged, which can do this task to an outstanding degree.
  • this unit is not responsible for the flow rate control.
  • the flow control valve controlling a constant flow is arranged independently of the pressure of the supplied liquid. This, in turn, can do an excellent job.
  • both functional units are arranged in the immediate vicinity, since this largely prevents an uncontrolled outflow of the liquid during the switching phases of the outlet shut-off valve.
  • the arrangement according to the invention is characterized in that the pressure-independent flow control valve has a piston chamber with a displaceable piston loaded with restoring force, which divides the piston chamber into two sections, that a flow restrictor section lies between these two sections and that the first chamber -Part area in which the restoring force acts, an unchanged Liche flow inlet opening and the second piston comb portion has a flow outlet throttle which is variable in cross section due to the piston position.
  • a particularly uniform flow rate is achieved by such an arrangement, since the measures taken are extremely sensitive, in particular able to react to pressure fluctuations and to change the throttle behavior as a function thereof.
  • the flow inlet opening into the pressure-dependent flow control valve is designed as a throttle section.
  • a pressure reduction is already carried out in this area, so that the control behavior is closer to an area approaching the output pressure.
  • the arrangement according to the invention is characterized in that a plurality of bores are arranged on the circumference of the throttle chamber in the displacement area of the piston.
  • a particularly favorable control characteristic for the flow rate can be achieved by slightly displacing these bores in the piston stroke direction.
  • a spring will expediently be arranged to provide the restoring force on the piston. To readjust the flow rate to a certain desired quantity and to readjust the arrangement, it is expedient to ensure that the restoring force can be adjusted. A pressure screw acting on the return spring can be used for this.
  • the arrangement according to the invention is preferably further developed such that the restoring force for the control piston is guided via a temperature compensation rod.
  • plastic can be used, for example, for the control valve housing, while the control piston consists of metal.
  • This choice of material is advantageous both in terms of production technology and sliding technology.
  • a particularly simple arrangement of the temperature compensation rod is obtained if it is integrated in the adjusting screw mechanism.
  • a vending machine for selectively mixing of different beverage concentrates with chilled CO z -water to a mixed drink contains as essential ingredients a mixing trough 1, in which the mixing process is initiated or carried out beverage concentrate container 2, from which via metering 3 portions, the beverage concentrates of the mixing channel 1 are supplied and a storage container 4 for cooled CO 2 water, which can flow into the mixing trough as required via a discharge valve 5.
  • the beverage mix leaves the mixing trough 1 via an outlet funnel 6.
  • the CO 2 water supply is cooled by refrigerants which are passed through a pipe 7 wound around the storage container 4.
  • the CO, water supply within the container 4 is supplemented by the quantities withdrawn via the discharge valve 5 in that fresh water is supplied via a pipeline 8, controlled by a valve system 9, and via a pipeline 10 from a container 11 with CO, gas filling - Controlled by a valve system 12 - CO, gas is supplied.
  • the quality of the mixed drink that can be achieved depends to a large extent on the mixing ratio of beverage concentrate and carbonated water.
  • the beverage concentrate quantity determination is by be known configurations of the metering devices 3 can be carried out with sufficient accuracy.
  • a corresponding amount of carbonated water is now to be mixed into the respective beverage concentrate amounts.
  • the output valve 5, which is shown in section in FIG. 2, serves to control the output of this carbonized water from the storage container 4.
  • the time control takes place via a control circuit 13, which is not to be explained in detail.
  • the output valve 5 basically consists of two functional units, namely an electromagnetically controllable flow / shut-off valve 14 and a flow control valve 15 which controls the flow rate independently of the supplied liquid pressure.
  • the flow / shut-off valve 14 contains an electromagnetic coil 16. When excited a magnetic armature 17 is attracted against the force of a spring 18 by current flow. In this case, a membrane 19 connected to this plunger anchor 17 lifts off its valve seat 20, so that the carbonized water supplied from the reservoir 4 via the line 21 can pass this shut-off valve essentially unhindered. Through channels 22 and a housing bore 23, this reaches the area of the flow control valve 15, specifically in the inlet-side portion 24 of a piston chamber of this flow control valve.
  • a piston 25 arranged in this piston chamber is acted upon by the force of a spring 26, specifically in the direction of the inflow region 24 of the carbonized water.
  • a throttle bore 27 is made in the end face of the piston, so that the carbonized water supplied can reach the second partial region 28 of the first partial region 24 of the piston chamber. When there is flow, a pressure reduction takes place at this throttle bore 27.
  • a plurality of bores 29 are arranged in the cylinder liner 30 on the circumference of the second partial region 28 of the piston chamber and lead to an outflow channel 31 via a ring line 35 in the housing wall. These bores 29 lie in the stroke area of the piston skirt 25.
  • the piston is pressed to an increased extent against the force of the spring 26, so that the outlet openings 29 are covered more by the piston skirt.
  • An increased throttling effect occurs at these points. If there is less pressure in the area of the first partial area 24 of the throttle chamber, the following accordingly takes place the piston 25 of the force of the spring 26 and the outlet openings 29 are ver - strengthens released. The throttling effect on the liquid flowing through in this area decreases accordingly.
  • Appropriate dimensioning means that the throttling effect in the area of the outlet openings 29 changes in proportion to the liquid pressure occurring in the first partial area 24 of the piston chamber. However, this means that the flow rate of the carbonated water can be regulated constantly irrespective of the liquid pressure supplied via line 21.
  • the amount of carbonated water dispensed can be determined extremely precisely by appropriate time control.
  • the force of the spring 26 can be varied by changing its pretension via an adjusting screw 32.
  • a temperature expansion is - compensating rod 33 integrated, on which a sleeve is placed 34th
  • the return spring 26 is supported against this sleeve 34, that is to say indirectly with respect to the valve housing.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Dispensing Beverages (AREA)
  • Temperature-Responsive Valves (AREA)
  • Control Of Fluid Pressure (AREA)

Abstract

Als druckunabhängiges Durchflußmengen-Regelventil findet ein Koibensystem Anwendung, bei welchem der Kolben die Kolbenkammer in zwei Teilbereiche, die über einer Strömungs-Drosselstrecke miteinander in Verbindung stehen, unterteilt und in Abhängigkeit von zugeführten Drücken, weichen Rückstellkräfte auf den Kolben entgegenwirken, Steueröffnungen beeinflußt. Die Rückstellkraft für den Kolben ist über ein Kompensationsglied für temperaturabhängige Ausdehnungen geführt.

Figure imgaf001
As a pressure-independent flow control valve, a piston system is used, in which the piston divides the piston chamber into two sections, which are connected to each other via a flow restrictor, and, depending on the pressures supplied, counteract the restoring forces on the piston and affect control openings. The restoring force for the piston is guided by a compensation element for temperature-dependent expansions.
Figure imgaf001

Description

Die vorliegende Erfindung bezieht sich auf eine Anordnung zum Mischen von Getränken, insbesondere aus einer flüssigen Grundsubstanz, insbesondere aus karbonisiertem Wasser, und einem Getränkekonzentrat. Eine derartige Anordnung findet beispielsweise Anwendung in einem Getränkeautomaten, bei welchem ein Getränkekonzentrat oder wahlweise ein von mehreren Getränkekonzentraten mit karbonisiertem Wasser zu einem Erfrischungsgetränk unmittelbar vor dem Konsum mischbar sind.The present invention relates to an arrangement for mixing beverages, in particular from a liquid base substance, in particular from carbonated water, and a beverage concentrate. Such an arrangement is used, for example, in a vending machine in which a beverage concentrate or optionally one of several beverage concentrates can be mixed with carbonated water to form a soft drink immediately before consumption.

Das zu diesem Zweck erforderliche karbonisierte Wasser wird gekühlt und unter Druck stehend bevorratet. In bekannter Weise wird dieses karbonisierte Wasser über ein Absperrventil und gegebenenfalls über ein diesem nachgeschaltetes Entspannungsventil für den Mischvorgang ausgegeben. Die Güte des Mischgetränks ist im wesentlichen Maße abhängig vom Mischungsverhältnis aus Getränkekonzentrat und karbonisiertem Wasser. Aus diesem Grunde ist es wesentlich, Maßnahmen zu ergreifen, welche geeignet sind, das erforderlich Mischungsverhältnis bei dem im Normalbetrieb üblichen unterschiedlichen Bedingungen zu gewährleisten. So ist es beispielsweise bekannt, die Getränkekonzentrats-Mengenbestimmung über Dosierkammern portionsweise vorzunehmen.The carbonated water required for this purpose is cooled and stored under pressure. In a known manner, this carbonized water is output for the mixing process via a shut-off valve and, if appropriate, via an expansion valve downstream of this. The quality of the mixed drink depends to a large extent on the mixing ratio of beverage concentrate and carbonated water. For this reason, it is essential to take measures that are suitable to ensure the required mixing ratio under the different conditions that are normal in normal operation. For example, it is known to determine the amount of beverage concentrate in portions via metering chambers.

Aufgrund insbesondere der wesentlich höheren Zugabemenge des karbonisierten Wassers wird dieses aber in der angesprochenen bekannten Weise im kontinuierlichen Durchlauf ausgegeben, wobei die Mengenbestimmung, resultiert aus der Ausgabemenge je Zeiteinheit und der Ausgabezeit. Die Beherrschung der Ausgabezeit ist durch bekannte steuertechnische Maßnahmen ohne weiteres möglich. Probleme stellen sich vielmehr im Bereich der mechanischen Ausgabeeinheit und zwar in so weit, daß durch die bekannten Maßnahmen keine ausreichend genauen Durchflußmengen je Zeiteinheit realisierbar sind. Eine nicht unerhebliche Störgröße ist darin zu sehen, daß die Flüssigkeit der Ausgabevorrichtung unter unterschiedlichen Druckverhältnissen zugeführt wird.Due in particular to the significantly higher addition quantity of the carbonated water, however, this is dispensed in the known manner mentioned in a continuous cycle, the quantity determination resulting from the dispensing quantity per unit of time and the dispensing time. The control of the dispensing time is easily possible using known tax measures. Rather, problems arise in the area of the mechanical output unit to such an extent that the known measures do not result in sufficiently precise flow rates Unit of time are realizable. A not inconsiderable disturbance variable can be seen in the fact that the liquid is supplied to the dispensing device under different pressure conditions.

Der vorliegenden Erfindung liegt nunmehr die Aufgabe zugrunde, eine Anordnung bereitzustellen, durch welche eine exakte Bestimmung der Ausgabemengen von Flüssigkeiten ermöglicht ist.The object of the present invention is now to provide an arrangement by which an exact determination of the dispensing quantities of liquids is made possible.

Eine Anordnung, welche diesen Anforderungen genügt, ist erfindungsgemäß dadurch gekennzeichnet, daß ein einen konstanten Durchfluß unabhängig vom Druck der zugeführten Flüssigkeit steuerndes Durchflußregelventil einem Auslaß-Absperrventil unmittelbar nachgeschaltet ist und daß dem Auslaß-Absperrventil eine Zeitsteuereinrichtung zugeordnet ist.An arrangement which meets these requirements is characterized in accordance with the invention in that a flow control valve controlling a constant flow irrespective of the pressure of the supplied liquid is directly connected to an outlet shut-off valve and that a timing device is assigned to the outlet shut-off valve.

Eine nach diesen Merkmalen der Erfindung aufgebaute Anordnung folgt dem Konzept, unterschiedlichen Funktionsanforderungen unterschiedliche Funktionseinheiten zuzuordnen und diese möglichst funktionsnah zueinander anzuordnen. Eine Funktionsanforderung ist dadurch gegeben, daß die durch die Zeitsteuerung vorgegebene Öffnungszeit des Ausgabeventils möglichst exakt realisiert wird. Aus diesem Grunde ist ein Auslaß-Absperrventil angeordnet, welches eben dieser Aufgabe in hervorragendem Maße gerecht werden kann. Für die Durchflußmengen-Regelung ist diese Baueinheit jedoch nicht verantwortlich. Dazu ist das einen konstanten Durchfluß unabhängig vom Druck der zugeführten Flüssigkeit steuerndes Durchfluß-Regelventil angeordnet. Dieses wiederum kann der ihm gestellten Aufgabe in hervorragendem Maße gerecht werden. Es ist aber auch wesentlich, daß beide Funktionseinheiten in unmittelbarer Nachbarschaft angeordnet sind, da somit weitestgehend ein unkontrolliertes Ausfließen der Flüssigkeit während der Schaltphasen des Auslaß-Absperrventils vermieden wird.An arrangement constructed according to these features of the invention follows the concept of assigning different functional requirements to different functional units and arranging them as closely as possible to one another. A functional requirement is given in that the opening time of the dispensing valve, which is predetermined by the time control, is realized as precisely as possible. For this reason, an outlet shut-off valve is arranged, which can do this task to an outstanding degree. However, this unit is not responsible for the flow rate control. For this purpose, the flow control valve controlling a constant flow is arranged independently of the pressure of the supplied liquid. This, in turn, can do an excellent job. However, it is also essential that both functional units are arranged in the immediate vicinity, since this largely prevents an uncontrolled outflow of the liquid during the switching phases of the outlet shut-off valve.

Nach einer bevorzugten Ausgestaltung ist die erfindungsgemäße Anordnung dadurch gekennzeichnet, daß das druckunabhängig wirkende Durchfluß-Regelventil eine Kolbenkammer mit einem mit Rückstellkraft beaufschlagten verschieblichen Kolben aufweist, welche die Kolbenkammer in zwei Teilbereiche unterteilt, daß zwischen diesen beiden Teilbereichen eine Strömungsdrosselstrecke liegt und daß der erste Kammer-Teilbereich, in Richtung dessen die Rückstellkraft wirkt, eine unveränderliche Strömungs-Eintrittsöffnung aufweist und der zweite Kolbenkamm-Teilbereich eine durch die Kolbenstellung im Querschnitt veränderliche Strömungs-Austrittsdrossel aufweist. Durch eine derartig ausgestaltete Anordnung wird eine besonders gleichförmige Durchflußmenge realisiert, da die getroffenen Maßnahmen äußerst feinfühlig in der Lage sind, insbesondere auf Druckschwankungen zu reagieren und in Abhängigkeit davon das Drosselverhalten zu verändern.According to a preferred embodiment, the arrangement according to the invention is characterized in that the pressure-independent flow control valve has a piston chamber with a displaceable piston loaded with restoring force, which divides the piston chamber into two sections, that a flow restrictor section lies between these two sections and that the first chamber -Part area in which the restoring force acts, an unchanged Liche flow inlet opening and the second piston comb portion has a flow outlet throttle which is variable in cross section due to the piston position. A particularly uniform flow rate is achieved by such an arrangement, since the measures taken are extremely sensitive, in particular able to react to pressure fluctuations and to change the throttle behavior as a function thereof.

Nach einer bevorzugten Weiterbildung der erfindungsgemäßen Anordnung ist die Strömungs-Eintrittsöffnung in das druckabhängig wirkende Durchfluß-Regelventil als Drosselstrecke ausgestaltet. Dadurch wird bereits in diesem Bereich eine Druckherabsetzung durchgeführt, so daß das Regelverhalten näher in einen dem Ausgabedruck sich nähernden Bereich gelegt ist.According to a preferred development of the arrangement according to the invention, the flow inlet opening into the pressure-dependent flow control valve is designed as a throttle section. As a result, a pressure reduction is already carried out in this area, so that the control behavior is closer to an area approaching the output pressure.

Nach einer besonderen Ausgestaltung ist die erfindungsgemäße Anordnung dadurch gekennzeichnet, daß eine Mehrzahl von Bohrungen am Umfang der Drosselkammer im Verschiebebereich des Kolbens angeordnet sind. Durch leichte Versetzung dieser Bohrungen in Kolbenhub-Richtung ist eine besonders günstige Regelcharakteristik für die Durchflußmenge erzielbar.According to a special embodiment, the arrangement according to the invention is characterized in that a plurality of bores are arranged on the circumference of the throttle chamber in the displacement area of the piston. A particularly favorable control characteristic for the flow rate can be achieved by slightly displacing these bores in the piston stroke direction.

Für die Bereitstellung der Rückstellkraft an den Kolben wird zweckmäßigerweise eine Feder anzuordnen sein. Zur Nachregelung der Durchflußmenge auf ein bestimmtes gewünschtes Quantum und zur Nachjustierung der Anordnung ist es zweckmäßig, für eine Verstellbarkeit der Rückstellkraft Sorge zu tragen. Dazu kann eine auf die Rückstellfeder wirkende Druckschraube dienen.A spring will expediently be arranged to provide the restoring force on the piston. To readjust the flow rate to a certain desired quantity and to readjust the arrangement, it is expedient to ensure that the restoring force can be adjusted. A pressure screw acting on the return spring can be used for this.

Die erfindungsgemäße Anordnung ist bevorzugterweise dahingehend weitergebildet, daß die Rückstellkraft für den Steuerkolben über einen Temperatur-Kompensationsstab geführt ist.The arrangement according to the invention is preferably further developed such that the restoring force for the control piston is guided via a temperature compensation rod.

Bei einem Durchflußmengen-Regelventil mit Maßnahmen nach diesen die Erfindung weiterbildenden Merkmalen kann beispielsweise für das Regelventil-Gehäuse Kunststoff Verwendung finden, während der Steuerkolben aus Metall besteht. Sowohl herstellungstechnisch als auch gleittechnisch ist diese Materialwahl vorteilhaft. Durch die Verwendung des Temperatur-Kompensationsstabes sind die unterschiedlichen temperaturbedingten Ausdehnungen dieser Funktionsteile kompensierbar, und zwar nicht nur bezüglich der durch die Längenänderung veränderten Verhältnisse, sondern auch im Hinblick auf unterschiedliche Durchmesser-Gegebenheiten. Die entsprechende Materialwahl für den Temperatur-Kompensationsstab wird zweckmäßigerweie empirisch zu ermitteln sein.In the case of a flow control valve with measures according to these features which further develop the invention, plastic can be used, for example, for the control valve housing, while the control piston consists of metal. This choice of material is advantageous both in terms of production technology and sliding technology. By using the temperature compensation rod, the different ones Temperature-related expansions of these functional parts can be compensated, not only with regard to the conditions changed by the change in length, but also with regard to different diameter conditions. The appropriate choice of material for the temperature compensation rod will expediently have to be determined empirically.

Eine besonders einfache Anordnung des Temperatur-Kompensationsstabes ergibt sich, wenn dieser in den Stellschrauben-Mechanismus integriert ist.A particularly simple arrangement of the temperature compensation rod is obtained if it is integrated in the adjusting screw mechanism.

Ein nach den Merkmalen der Erfindung ausgestaltetes Ausführungsbeispiel ist anhand der Zeichnung im folgenden näher beschrieben. Es zeigen:

  • Fig. 1 eine schematische Ansicht einer Mischeinrichtung für einen Getränkeautomaten und
  • Fig. 2 eine Anordnung zur Ausgabe von karbonisiertem Wasser mit gleichförmiger Durchflußmenge.
An embodiment designed according to the features of the invention is described in more detail below with reference to the drawing. Show it:
  • Fig. 1 is a schematic view of a mixing device for a vending machine and
  • Fig. 2 shows an arrangement for dispensing carbonated water with a uniform flow rate.

Ein Getränkeautomat zum wahlweisen Mischen von unterschiedlichen Getränkekonzentraten mit gekühltem COz -Wasser zu einem Mischgetränk enthält als wesentliche Bestandteile eine Mischrinne 1, in welcher der Mischvorgang eingeleitet bzw. durchgeführt wird, Getränkekonzentrats-Behälter 2, aus denen über Dosiereinrichtungen 3 die Getränkekonzentrate portionsweise der Mischrinne 1 zugeführt werden und einen Vorratsbehälter 4 für gekühltes CO2-Wasser, welches über ein Ausgabeventil 5 in die Mischrinne bedarfsweise einfließen kann. Die Getränkemischung verläßt die Mischrinne 1 über einen Auslauftrichter 6. Der CO2-Wasservorrat wird gekühlt durch Kältemittel, welche über eine um den Vorratsbehälter 4 gewickelte Rohrleitung 7 geleitet sind. Ergänzt wird der CO, -Wasservorrat innerhalb des Behälters 4 um die über das Ausgabeventil 5 entnommenen Mengen dadurch, daß über eine Rohrleitung 8 - gesteuert über ein Ventilsystem 9 - Frischwasser zugeführt wird und über eine Rohrleitung 10 aus einem Behälter 11 mit CO,-Gasfüllung - gesteuert durch ein Ventilsystem 12 - CO,-Gas zugeführt wird. Die Güte des erzielbaren Mischgetränks ist in hohem Maße abhängig vom Mischungsverhältnis aus Getränkekonzentrat und karbonisiertem Wasser. Die Getränkekonzentrats-Mengenbestimmung ist durch bekannte Ausgestaltungen der Dosiereinrichtungen 3 mit genügend großer Genauigkeit durchführbar. Den jeweiligen Getränkekonzentrats-Mengen ist nunmehr eine entsprechende Menge von karbonisiertem Wasser zuzumischen. Zur Ausgabesteuerung dieses karbonisierten Wassers aus dem Vorratsbehälter 4 dient das Ausgabeventil 5, welches in der Fig. 2 im Schnitt dargestellt ist. Die Zeitsteuerung erfolgt über eine nicht näher zu erläuternde Ansteuerschaltung 13.A vending machine for selectively mixing of different beverage concentrates with chilled CO z -water to a mixed drink contains as essential ingredients a mixing trough 1, in which the mixing process is initiated or carried out beverage concentrate container 2, from which via metering 3 portions, the beverage concentrates of the mixing channel 1 are supplied and a storage container 4 for cooled CO 2 water, which can flow into the mixing trough as required via a discharge valve 5. The beverage mix leaves the mixing trough 1 via an outlet funnel 6. The CO 2 water supply is cooled by refrigerants which are passed through a pipe 7 wound around the storage container 4. The CO, water supply within the container 4 is supplemented by the quantities withdrawn via the discharge valve 5 in that fresh water is supplied via a pipeline 8, controlled by a valve system 9, and via a pipeline 10 from a container 11 with CO, gas filling - Controlled by a valve system 12 - CO, gas is supplied. The quality of the mixed drink that can be achieved depends to a large extent on the mixing ratio of beverage concentrate and carbonated water. The beverage concentrate quantity determination is by be known configurations of the metering devices 3 can be carried out with sufficient accuracy. A corresponding amount of carbonated water is now to be mixed into the respective beverage concentrate amounts. The output valve 5, which is shown in section in FIG. 2, serves to control the output of this carbonized water from the storage container 4. The time control takes place via a control circuit 13, which is not to be explained in detail.

Das Ausgabeventil 5 nach Fig. 2 besteht prinzipiell aus zwei Funktionseinheiten, und zwar aus einem elektromagnetisch ansteuerbaren Durchfluß/Absperrventil 14 und einem unabhängig vom zugeführten Flüssigkeitsdruck die Durchflußmenge steuernden Durchfluß-Regelventil 15. Das Durchfluß/Absperrventil 14 enthält eine Elektromagnetspule 16. Bei deren Erregung durch Stromdurchfluß wird ein Magnetanker 17 entgegen der Kraft einer Feder 18 angezogen. Dabei hebt eine mit diesem Tauchanker 17 verbundene Membrane 19 von ihrem Ventilsitz 20 ab, so daß das aus dem Vorratsbehälter 4 über die Leitung 21 zugeführte karbonisierte Wasser dieses Absperrventil im wesentlichen ungehindert passieren kann. Durch Kanäle 22 und eine Gehäusebohrung 23 gelangt dieses in den Bereich des Durchfluß-Regelventils 15, und zwar in den eingangsseitigen Teilbereich 24 einer Kolbenkammer dieses Durchfluß-Regelventils. Ein in dieser Kolbenkammer angeordneter Kolben 25 ist mit der Kraft einer Feder 26 beaufschlagt, und zwar in Richtung auf den Einströmbereich 24 des karbonisierten Wassers. In der Stirnfläche des Kolbens ist eine Drosselbohrung 27 eingebracht, so daß das zugeführte karbonisierte Wasser vom ersten Teilbereich 24 der Kolbenkammer in deren zweiten Teilbereich 28 gelangen kann. Bei Strömung findet an dieser Drosselbohrung 27 ein Druckabbau statt.The output valve 5 according to FIG. 2 basically consists of two functional units, namely an electromagnetically controllable flow / shut-off valve 14 and a flow control valve 15 which controls the flow rate independently of the supplied liquid pressure. The flow / shut-off valve 14 contains an electromagnetic coil 16. When excited a magnetic armature 17 is attracted against the force of a spring 18 by current flow. In this case, a membrane 19 connected to this plunger anchor 17 lifts off its valve seat 20, so that the carbonized water supplied from the reservoir 4 via the line 21 can pass this shut-off valve essentially unhindered. Through channels 22 and a housing bore 23, this reaches the area of the flow control valve 15, specifically in the inlet-side portion 24 of a piston chamber of this flow control valve. A piston 25 arranged in this piston chamber is acted upon by the force of a spring 26, specifically in the direction of the inflow region 24 of the carbonized water. A throttle bore 27 is made in the end face of the piston, so that the carbonized water supplied can reach the second partial region 28 of the first partial region 24 of the piston chamber. When there is flow, a pressure reduction takes place at this throttle bore 27.

Am Umfang des zweiten Teilbereichs 28 der Kolbenkammer sind eine Mehrzahl von Bohrungen 29 in der Zylinderbuchse 30 angeordnet, welche über eine Ringleitung 35 in der Gehäusewandung zu einem Ausflußkanal 31 führen. Diese Bohrungen 29 liegen im Hubbereich des Kolbenmantels 25. Bei hohem Druck im ersten Teilbereich 24 wird der Kolben in verstärktem Maße gegen die Kraft der Feder 26 gedrückt, so daß die Austrittsöffnungen 29 durch den Kolbenmantel verstärkt überdeckt werden. Dabei tritt an diesen Stellen eine erhöhte Drosselwirkung auf. Liegt im Bereich des ersten Teilbereichs 24 der Drosselkammer weniger Druck an, so folgt entsprechend der Kolben 25 der Kraft der Feder 26 und die Austrittsöffnungen 29 werden ver- stärkt freigegeben. Die Drosselwirkung auf die durchströmende Flüssigkeit in diesem Bereich nimmt demgemäß ab. Durch entsprechende Dimensionierung ist nunmehr erreichbar, daß die Drosselwirkung im Bereich der Austrittsöffnungen 29 proportional zu den in dem ersten Teilbereich 24 der Kolbenkammer auftretenden Flüssigkeitsdrucks sich verändert. Damit läßt sich aber die Durchflußmenge des karbonisierten Wassers unabhängig vom über die Leitung 21 zugeführten Flüssigkeitsdruck konstant regeln.A plurality of bores 29 are arranged in the cylinder liner 30 on the circumference of the second partial region 28 of the piston chamber and lead to an outflow channel 31 via a ring line 35 in the housing wall. These bores 29 lie in the stroke area of the piston skirt 25. At high pressure in the first partial area 24, the piston is pressed to an increased extent against the force of the spring 26, so that the outlet openings 29 are covered more by the piston skirt. An increased throttling effect occurs at these points. If there is less pressure in the area of the first partial area 24 of the throttle chamber, the following accordingly takes place the piston 25 of the force of the spring 26 and the outlet openings 29 are ver - strengthens released. The throttling effect on the liquid flowing through in this area decreases accordingly. Appropriate dimensioning means that the throttling effect in the area of the outlet openings 29 changes in proportion to the liquid pressure occurring in the first partial area 24 of the piston chamber. However, this means that the flow rate of the carbonated water can be regulated constantly irrespective of the liquid pressure supplied via line 21.

Durch eine entsprechende Zeitsteuerung ist damit die ausgegebene Menge von karbonisiertem Wasser äußerst genau bestimmbar.The amount of carbonated water dispensed can be determined extremely precisely by appropriate time control.

Um die Durchflußmenge ein- und nachjustieren zu können, ist die Kraft der Feder 26 durch Veränderung ihrer Vorspannung über eine Verstellschraube 32 variierbar. In diese Schraube 32 ist ein Temperatur-Ausdehnungs-Kompensationsstab 33 integriert, auf welchen eine Hülse 34 aufgesetzt ist. Gegen diese Hülse 34 stützt sich die Rückstellfeder 26, also mittelbar gegenüber dem Ventilgehäuse ab. Durch Anwendung dieser Maßnahme ist es möglich, das Ventilgehäuse des Durchflußregelventils 15, die Zylinderbuchse 30, den Kolben 25 und die Verstellschraube 32 aus unterschiedlichen Materialien mit abweichenden Temperatur-Ausdehnungskoeffizienten zu fertigen. Mit Hilfe dieses Temperatur-Ausdehnungs-Kompensationsstabes33 wird erreicht, daß unterschiedliche Betriebstemperaturen sich dennoch nicht auf das Durchflußmengen-Regelventil des Systems auswirken.In order to be able to adjust and readjust the flow rate, the force of the spring 26 can be varied by changing its pretension via an adjusting screw 32. In this screw 32, a temperature expansion is - compensating rod 33 integrated, on which a sleeve is placed 34th The return spring 26 is supported against this sleeve 34, that is to say indirectly with respect to the valve housing. By using this measure, it is possible to manufacture the valve housing of the flow control valve 15, the cylinder sleeve 30, the piston 25 and the adjusting screw 32 from different materials with different temperature expansion coefficients. With the help of this temperature expansion compensation rod 33 it is achieved that different operating temperatures have no effect on the flow control valve of the system.

Claims (10)

1. Anordnung zum Mischen von Getränken, insbesondere aus einer flüssigen Grundsubstanz, insbesondere aus karbonisiertem Wasser, und einem Getränkekonzentrat, dadurch gekennzeichnet, daß ein einen konstanten Durchfluß unabhängig vom Druck der zugeführten Flüssigkeit steuerndes Durchflußregelventil (15) einem Auslaß-Absperrventil (14) unmittelbar nachgeschaltet ist und daß dem Auslaß-Absperrventil (14) eine Zeitsteuereinrichtung (13) zugeordnet ist.1. Arrangement for mixing beverages, in particular from a liquid basic substance, in particular carbonated water, and a beverage concentrate, characterized in that a flow control valve (15) controlling an constant flow independently of the pressure of the supplied liquid is an outlet shut-off valve (14) directly is connected downstream and that the outlet shut-off valve (14) is assigned a timing device (13). 2. Anordnung nach Anspruch 1, dadurch gekennzeichnet, daß das druckabhängige Durchfluß-Regelventil (15) eine Kolbenkammer mit einem mit Rückstellkraft beaufschlagten verschieblichen Kolben (25) aufweist, welcher die Kolbenkammer in zwei Teilbereiche (24, 28) unterteilt, daß zwischen diesen beiden Teilbereichen eine Strömungs-Drosselstrecke (27) liegt und daß der erste Kolbenkammer-Teilbereich (24), in dessen Richtung die Rückstellkraft wirkt, eine unveränderliche Strömungs-Eintrittsöffnung (23) aufweist und der zweite Kolbenkammer-Teilbereich eine durch die Kolbenhubstellung im Querschnitt veränderliche Strömungs-Austrittsdrossel (29) aufweist.2. Arrangement according to claim 1, characterized in that the pressure-dependent flow control valve (15) has a piston chamber with a resilient piston loaded with restoring force (25) which divides the piston chamber into two sections (24, 28) that between these two A flow throttle section (27) lies in partial areas and that the first piston chamber partial area (24), in the direction of which the restoring force acts, has an invariable flow inlet opening (23) and the second piston chamber partial area has a flow which is variable in cross section due to the piston stroke position -Exhaust throttle (29). 3. Anordnung nach Anspruch 2, dadurch gekennzeichnet, daß die Strömungs-Eintrittsöffnung (23) eine Drosselstrecke ist.3. Arrangement according to claim 2, characterized in that the flow inlet opening (23) is a throttle section. 4. Anordnung nach einem der Ansprüche 2 oder 3, dadurch gekennzeichnet, daß die Strömungs-Austrittsdrossel eine Mehrzahl von am Umfang der Kolbenkammer angeordneten Bohrungen (29) ist.4. Arrangement according to one of claims 2 or 3, characterized in that the flow outlet throttle is a plurality of arranged on the circumference of the piston chamber bores (29). 5. Anordnung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Rückstellkraft durch ein Federelement (26) ausgeübt wird.5. Arrangement according to one of claims 1 to 4, characterized in that the restoring force is exerted by a spring element (26). 6. Anordnung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die auf den Kolben (26) wirkende Rückstellkraft einstellbar ist.6. Arrangement according to one of claims 1 to 5, characterized in that the restoring force acting on the piston (26) is adjustable. 7. Durchflußmengen-Regelventil nach Anspruch 6, dadurch gekennzeichnet, daß zur Veränderung der Rückstellkraft eine auf ein Federelement (26) wirkende Verstellschraube (32) angeordnet ist.7. Flow control valve according to claim 6, characterized in that an adjusting screw (32) acting on a spring element (26) is arranged to change the restoring force. 8. Anordnung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die gegen den Zuführungsdruck des Strömungsmittels wirkende Rückstellkraft für den Steuerkolben (25) über einen Temperatur-Kompensationsstab (33) geführt ist.8. Arrangement according to one of claims 1 to 7, characterized in that the restoring force acting against the supply pressure of the fluid for the control piston (25) is guided via a temperature compensation rod (33). 9. Durchflußmengen-Regelventil nach Anspruch 8, dadurch gekennzeichnet, daß der Temperatur-Kompensionsstab (33) in die Verstellschraube (32) integriert ist.9. Flow control valve according to claim 8, characterized in that the temperature compensation rod (33) is integrated in the adjusting screw (32). 10. Durchflußmengen-Regelventil nach einem derAnsprüche 1 bis 9, dadprch gekennzeichnet, daß das Ventilgehäuse aus Kunststoff und der Steuerkolben (25) aus Metall besteht.10. Flow control valve according to one of claims 1 to 9, characterized in that the valve housing is made of plastic and the control piston (25) is made of metal.
EP85108643A 1984-08-22 1985-07-11 Device for mixing beverages Expired - Lifetime EP0172385B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85108643T ATE49137T1 (en) 1984-08-22 1985-07-11 ARRANGEMENT FOR MIXING BEVERAGES.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3430901 1984-08-22
DE3430953 1984-08-22
DE19843430901 DE3430901A1 (en) 1984-08-22 1984-08-22 Lead-through regulating valve
DE19843430953 DE3430953A1 (en) 1984-08-22 1984-08-22 Arrangement for mixing drinks

Publications (3)

Publication Number Publication Date
EP0172385A2 true EP0172385A2 (en) 1986-02-26
EP0172385A3 EP0172385A3 (en) 1987-04-01
EP0172385B1 EP0172385B1 (en) 1990-01-03

Family

ID=25824078

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Application Number Title Priority Date Filing Date
EP85108643A Expired - Lifetime EP0172385B1 (en) 1984-08-22 1985-07-11 Device for mixing beverages

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US (1) US4665809A (en)
EP (1) EP0172385B1 (en)
KR (1) KR900000265B1 (en)
AU (1) AU583528B2 (en)
CA (1) CA1295297C (en)
DE (1) DE3575084D1 (en)
ES (1) ES8700634A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IE60558B1 (en) * 1986-10-29 1994-07-27 Coca Cola Co Post-mix juice dispensing system
CA2049080C (en) * 1990-08-16 1996-07-09 Alfred Raab Assembly for flow regulation and for opening a flow-through conduit for liquids under pressure
US7077290B2 (en) * 2002-05-17 2006-07-18 Pepsico, Inc. Beverage forming and dispensing system
US7717294B2 (en) * 2005-06-20 2010-05-18 South-Tek Systems Beverage dispensing gas consumption detection with alarm and backup operation
US11524886B2 (en) * 2021-02-05 2022-12-13 Cana Technology, Inc. Ingredients cartridge for a beverage mixture dispensing system
CN117425810A (en) * 2021-05-26 2024-01-19 奥伊格斯特/弗里斯马格股份公司 Metering device for setting and/or regulating a gas flow, method for setting and/or regulating a gas flow, and household appliance assembly

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US3653548A (en) * 1968-12-14 1972-04-04 Tornado Gmbh Tapping cock for mixed drinks containing carbonic acid
DE2346350A1 (en) * 1973-09-14 1975-03-27 Holstein & Kappert Maschf Liquid flow regulating valve - with cylindrical regulator having in-line input and output for direct insertion in pipe line
CH625402A5 (en) * 1975-03-21 1981-09-30 Dagma Gmbh & Co Method and device for producing and dispensing carbonated liquids
EP0080571A1 (en) * 1981-12-02 1983-06-08 Bosch-Siemens HausgerÀ¤te GmbH Valve, especially for pressurized aerated liquids in automatic beverage dispensers or the like

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JPS485293Y1 (en) * 1966-08-06 1973-02-10
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JPS5830568A (en) * 1981-08-19 1983-02-23 Oval Eng Co Ltd Constant flow valve
JPS5884031A (en) * 1981-11-12 1983-05-20 ザ・コカ−コ−ラ・カンパニ− Portable post-mixed soft drink supply apparatus

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Publication number Priority date Publication date Assignee Title
US3653548A (en) * 1968-12-14 1972-04-04 Tornado Gmbh Tapping cock for mixed drinks containing carbonic acid
DE2346350A1 (en) * 1973-09-14 1975-03-27 Holstein & Kappert Maschf Liquid flow regulating valve - with cylindrical regulator having in-line input and output for direct insertion in pipe line
CH625402A5 (en) * 1975-03-21 1981-09-30 Dagma Gmbh & Co Method and device for producing and dispensing carbonated liquids
EP0080571A1 (en) * 1981-12-02 1983-06-08 Bosch-Siemens HausgerÀ¤te GmbH Valve, especially for pressurized aerated liquids in automatic beverage dispensers or the like

Also Published As

Publication number Publication date
DE3575084D1 (en) 1990-02-08
EP0172385A3 (en) 1987-04-01
KR900000265B1 (en) 1990-01-24
CA1295297C (en) 1992-02-04
AU583528B2 (en) 1989-05-04
KR860002067A (en) 1986-03-26
US4665809A (en) 1987-05-19
ES546306A0 (en) 1986-10-16
AU4650685A (en) 1986-02-27
EP0172385B1 (en) 1990-01-03
ES8700634A1 (en) 1986-10-16

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