EP0433753B1 - Vorrichtung zum Mischen von jeweils zwei Flüssigkeiten - Google Patents

Vorrichtung zum Mischen von jeweils zwei Flüssigkeiten Download PDF

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Publication number
EP0433753B1
EP0433753B1 EP90123190A EP90123190A EP0433753B1 EP 0433753 B1 EP0433753 B1 EP 0433753B1 EP 90123190 A EP90123190 A EP 90123190A EP 90123190 A EP90123190 A EP 90123190A EP 0433753 B1 EP0433753 B1 EP 0433753B1
Authority
EP
European Patent Office
Prior art keywords
time
volume
liquids
mixing
delivery valve
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.)
Expired - Lifetime
Application number
EP90123190A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0433753A1 (de
Inventor
Karlheinz Dipl.-Ing. Färber
Walter Dipl.-Ing. Eichler
Anton Dipl.-Ing. Deininger
Heinz-Werner Dipl.-Ing. Giefer
Alfred Dipl.-Ing. Raab
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
Application filed by Coca Cola Co filed Critical Coca Cola Co
Publication of EP0433753A1 publication Critical patent/EP0433753A1/de
Application granted granted Critical
Publication of EP0433753B1 publication Critical patent/EP0433753B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B67D1/1202—Flow control, e.g. for controlling total amount or mixture ratio of liquids to be dispensed
    • B67D1/1234—Flow control, e.g. for controlling total amount or mixture ratio of liquids to be dispensed to determine the total amount
    • 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
    • B67D1/10—Pump mechanism

Definitions

  • the present invention relates to a device for mixing two liquids in a fixed predetermined mixing ratio, one of the liquids, in particular the liquid for the smaller proportion of the mixture, in sequences of immediately consecutive partial portions by a volume-metering pump device and the further liquid over a period of time controlled output valve can be fed to a mixing area in a flow-controlled manner.
  • Such a device is preferably suitable in vending machines with which carbonized water is mixed with beverage concentrates to form a soft drink, the beverage concentrates from which one of the two liquids are quantity-controlled from a storage container and the carbonated water as the further liquid for the mixing process.
  • the mixing ratio of beverage concentrate to carbonated water that can be achieved by such vending machines
  • the drink that can be provided by the vending machine is as close as possible to the standard of the comparable finished drinks that are put on the market in bottles.
  • Dosing chamber dispensers for dispensing beverage concentrates have become known for use in vending machines (DE-OS 25 44 671, DE-OS 34 09 142, DE-OS 36 22 745). With the aid of such metering chamber dispensing devices, via which relatively highly precise individual volumes can be dispensed, the beverage concentrate can be dispensed with sufficient accuracy.
  • a device for the provision of carbonated water for mixing with such portioned beverage concentrates, a device has become known (DE-OS 34 30 953), in which the water treated and stored in a so-called carbonator under increased pressure is regulated by a flow rate controller and additionally by a time-controlled dispensing valve volume-controlled output.
  • Piston pump systems for this purpose require a higher level of drive technology compared to the known metering chamber dispensers, but they do offer the possibility of metering the beverage concentrates in much smaller individual quantities and at a higher dispensing frequency, so that beverages are mixed in an individual, determinable amount - practically almost continuously can be.
  • a device which meets these requirements is characterized in accordance with the invention in that the time-controlled dispensing valve, which controls the dispensing of the liquid regulated by a flow rate controller, is controlled in the same cycle as the pump device.
  • the clocking of the dispensing valve for the supply of the flow-controlled liquid which is carried out in accordance with the actuation of the volume-metering device according to the features of the invention, leads to the fact that the two liquids to be mixed together can each be coordinated with each other, the smallest volume volume caused by the volume-metering device, and that with a series of output quanta for practically continuous dispensing and mixing of these two liquids, the mixing ratio is continuously maintained exactly. It has been found that different conditions occur in the case of flow-controlled dispensing of liquids during the opening and closing of the time-controlled dispensing valve compared to the continuous flow-controlled dispensing. These can make a contribution to an inaccuracy of the desired mixing ratio.
  • the volume-metering device is a piston pump system which contains the one liquid, e.g. in beverage vending machines, the beverage concentrate is able to dispense in small individual quantities that can be strung together.
  • the output valve which can be timed and actuated can be actuated by the drive mechanism for the volume-metering device. This operation can be done in a purely mechanical way.
  • FIG. 1 In the simplified and largely stylized representation of FIG. 1 it can be seen that in a device housing 1 of a drinks machine a carbonator 2 is arranged in a heat-insulated manner by an insulating jacket 3. Via a feed line 4 this carbonizer 2 is supplied in a known manner as required water from a water supply and 5 CO2 gaseous via a feed line. Within this carbonator 2, the supplied water is mixed with the supplied CO2 to carbonized water. Via cooling coils 6, which, together with a compressor 7, a condenser section 8 and a throttle 9, a compressor refrigeration machine forms, the carbonator is cooled. An outlet opening 10 for the carbonator water is arranged in the lower region of the carbonator 2. Corresponding to the control of an electromagnetic outlet valve 12 connected downstream of a flow rate regulator 11, this carbonized water is dispensed via a mixing area, to which a beverage concentrate 13 is also supplied, for the production and provision of a soft drink.
  • the beverage concentrate 13 is stored in a container 14 which is inserted within a storage space 15 of the appliance housing 1. Via a drive system, the beverage concentrate 13 is dispensed through an dispensing system 16, which is an integral part of the container 14, and mixed with the carbonated water, so that a soft drink is provided.
  • a heat-conducting element 17 is flanged and led as wall parts 18 and 19 of the storage space 15 into the area of the container 14 for the beverage concentrate 13 for cooling it.
  • the dispensing system 16 is a piston pump system and consists of a housing 23 which is held in the dispensing area of an automatic beverage dispenser in the housing 1 of which it can be inserted from the front.
  • the housing 23 has a groove 24 into which a shoulder 25 of the device housing 1 engages in a horseshoe shape.
  • a delivery piston 26 is arranged axially displaceably between limit stops. The delivery stroke is determined by these stops, which determines the delivery volume for the beverage concentrate 13 to be dispensed per working cycle.
  • An inflow opening 27 in the housing 23, which extends towards the storage container 14, only indicated, and a central passage 28 in the delivery piston 26 are concentrically aligned with one another, so that a shaft of a control piston 29 can be axially displaceably guided therein.
  • the axial movement between the control piston 29 and the delivery piston 26 is in turn limited by stops 36 and 37.
  • the control piston 29 is driven by a lever 30, which engages with its one lever end 31 in a forked manner in a groove 32 of the control piston 29.
  • the lever 30 is fixed to one Axle 33 arranged in the device housing and is driven by an eccentric drive 34 which is gripped by the second lever arm 35 of the lever 30 by rotation in the direction of the arrow. If the eccentric 34 rotates further from the position shown in FIG.
  • the working piston 23 is moved downward over the stop area 36, so that the beverage concentrate 13 is sucked out of the storage container 14 into the piston pump system 16 via its inflow opening 27.
  • the eccentric 34 rotates further, the upper shaft of the control piston 29 initially reaches the area of the inflow opening 27 and closes it.
  • the stop regions 37 cooperate between the control piston 29 and the delivery piston 26, so that the delivery piston 26 is now moved upward with the control piston 29.
  • the originally aspirated beverage concentrate volume is conveyed via side channels 38 in the control piston 29 to a central dispensing channel 39 in the control piston 29.
  • the beverage concentrate 13 reaches the outside in the area in which it is mixed with the carbonated water supplied by the flow rate regulator 11 and the dispensing valve 12 in a quantity-controlled manner to form a beverage. Any number of work cycles can be directly strung together and counted so that an extremely precise determination and assignment of the output quantity of the individual drive cycles as well as the totality of the drive cycles can be carried out.
  • the drive system for driving two piston pump systems 16 and 16 ' that is to say for dispensing two beverage concentrates, each of which is used in its own container within the storage space 15 of the device housing 1, is explained with reference to the simplified and schematic representation shown in FIG. 2.
  • An electric motor 40 namely a reversible electric motor, is in drive connection with the drive shaft 43 via a gear transmission 42. By means of appropriate electrical wiring, the electric motor 40 can rotate in both directions of rotation and thus also drive the drive shaft 43 in both directions of rotation.
  • This drive shaft 43 is rotatably carried out by two hollow shafts 44 and 45, which in turn are rotatably mounted in the device housing 1 and each carry an eccentric 34 or 34 '.
  • the shaft 43 carries a wrap spring band 47 on a flange region 46, which extends over the hollow shafts 44 and 45, respectively.
  • This wrap spring band 47 acts between the flange area 46 of the drive shaft 43 and the two Hollow shafts 44 and 45 each as a one-way clutch, the connection between the flange region 46 and one of the two hollow shafts 44 and 45 and the uncoupling of the other hollow shaft from the flange region 46 being dependent on the winding direction of the loop belt coupling 47.
  • the reversible electric motor 40 is thus either driven the hollow shaft 44 with the eccentric 34 and above the drive lever 30 while the hollow shaft 45 is decoupled, or the hollow shaft 45 is driven with its eccentric 34 'while the hollow shaft 44 is decoupled.
  • the choice of the piston pump system to be driven for the optional dispensing of one of the two stored beverage concentrates can thus be carried out via the electronically or electrically controllable direction of rotation of the reversing electric motor 40.
  • control cams 48, 49 and 50, 51 are fixedly arranged on the hollow shaft 44. These control cams act on switch contact devices 52, 53 and 54, 55.
  • the control cams 48 and 50 act via their switch contact devices 52 and 54 on the control circuit for the reversible electric motor 40, so that it rotates further after an operating phase until the respective driven hollow shaft 44 or 45 is returned with its eccentric 34 or 34 'to a defined rest position. It is thus ensured that 16 entire working cycles act on the respective piston pump system.
  • the control cams 49 and 51 act in terms of control technology via the switch contact devices 53 and 55 assigned to them on the electromagnet system which actuates the dispensing valve 12 for the carbonated water to be added to the beverage concentrates.
  • the carbonized water is stored under increased pressure and cooled and, when the dispensing valve is opened - regulated by the flow rate regulator 11 - is released by the excess pressure in the carbonator 2 and fed to the mixing area, controlled, starting from the control cams 49 and 51 , clocked according to the duty cycles of the piston pump systems 16.
  • control cams 49 and 51 act purely mechanically on the dispensing valve for the carbonized water.
  • FIG. 4 symbolizes the drive device according to FIG. 3 in connection with a circuit diagram suitable for the device.
  • This circuit diagram shows the line connections from the power supply via the switch contacts 52 and 54 to the drive motor 40 and via the switch contacts 53 and 55 to the electromagnet of the outlet valve 12.
  • the drive motor 40 is a reversibly drivable synchronous motor with two windings and three connections, as is known, of which a middle connection is present on one line of the power supply and one of the other two connections, which are bridged together via a phase shift capacitor, can optionally be connected to the further line of the power supply via the switch contacts 52 and 54.
  • the switch contact 54 If, for example, the switch contact 54 is actuated in the direction of the arrow to prepare a drink, the connection of the drive motor 40 facing this switch contact is switched on directly and the opposite motor connection is switched on via the capacitor, and the drive motor 40 is thus driven so that the shaft 43 is connected via the loop belt coupling 45 the cams 50 and 51 and the eccentric 34 'is driven. As soon as actuation in the direction of the arrow is no longer exerted on this switching contact 54, this switching contact 54 is held in the adjustment position via the cam 50 until the cam 50 has reached its starting position again. Controlled by the cam 51, the outlet valve 12 for the carbonized water is opened per cam revolution for a period determined by the cam shape via the switching contact 55. The drive lever for dispensing the beverage concentrate, driven by the eccentric 34 ′, simultaneously executes a drive movement for each revolution of the shaft 43 to dispense a corresponding amount of beverage concentrate.
  • the drive motor 40 is applied with its external connections in the opposite direction to the power supply voltage, so that the motor 40 now rotates in the opposite direction and - as already described - the opposite shaft 43 drives.
  • two valves can also be arranged, which are assigned to the beverage variants and separately to the contact switches 53, 55.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Dispensing Beverages (AREA)
  • Accessories For Mixers (AREA)
  • Nozzles (AREA)
  • Control Of Non-Electrical Variables (AREA)
EP90123190A 1989-12-11 1990-12-04 Vorrichtung zum Mischen von jeweils zwei Flüssigkeiten Expired - Lifetime EP0433753B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3940879A DE3940879C1 (da) 1989-12-11 1989-12-11
DE3940879 1989-12-11

Publications (2)

Publication Number Publication Date
EP0433753A1 EP0433753A1 (de) 1991-06-26
EP0433753B1 true EP0433753B1 (de) 1994-06-29

Family

ID=6395244

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90123190A Expired - Lifetime EP0433753B1 (de) 1989-12-11 1990-12-04 Vorrichtung zum Mischen von jeweils zwei Flüssigkeiten

Country Status (9)

Country Link
EP (1) EP0433753B1 (da)
JP (1) JP3330594B2 (da)
AT (1) ATE107910T1 (da)
AU (1) AU644391B2 (da)
CA (1) CA2032011C (da)
DE (2) DE3940879C1 (da)
DK (1) DK0433753T3 (da)
ES (1) ES2055281T3 (da)
ZA (1) ZA909623B (da)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8768524B2 (en) 2010-06-04 2014-07-01 Pepsico, Inc. System and method for rapid reconfiguration of post-mix beverage dispenser

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0312241A1 (en) * 1987-10-13 1989-04-19 ABCC/TechCorp. Soft drink dispenser

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2887249A (en) * 1956-09-24 1959-05-19 Intercontinental Mfg Company I Dispensing device to deliver single measured volume
US3152728A (en) * 1962-10-01 1964-10-13 Internat Dispensing Co Drink dispenser with metering syringe and reconstituting nozzles
DE2544671C3 (de) * 1975-10-06 1979-05-17 Dagma Deutsche Automaten- Und Getraenkemaschinen-Gesellschaft Mbh & Co, 2067 Reinfeld Behälter zur dosierten Abgabe von Flüssigkeiten
US4194650B2 (en) 1977-02-14 1989-01-31 Liquid mixing and aerating system
US4144650A (en) * 1978-05-23 1979-03-20 Eugene Rawlings Multi-function level
DE3243319A1 (de) * 1982-11-23 1984-05-24 Technica Entwicklungsgesellschaft mbH & Co KG, 2418 Ratzeburg Verfahren und anordnung zum wahlweisen portionsmaessigen oder kontinuierlichen abgeben und mischen von unterschiedlichen fluessigkeiten in genauen mengen und mengenanteilen unabhaengig von schwankungen der viskositaet und/oder eines etwaigen vor- oder fliessdruckes
ZA848958B (en) * 1983-11-16 1986-07-30 Coca Cola Co Beverage dispenser
DE3430953A1 (de) * 1984-08-22 1986-03-06 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Anordnung zum mischen von getraenken
DE3622745A1 (de) * 1986-07-07 1988-02-04 Bosch Siemens Hausgeraete Getraenkekonzentrats-vorratsbehaelter zum einsatz in getraenkeautomaten
NZ222325A (en) * 1986-10-29 1991-04-26 Coca Cola Co Apparatus for dispensing beverage made from frozen concentrate; includes pressurisable concentrate canister
GB8808193D0 (en) * 1988-04-08 1988-05-11 Cadbury Schweppes Plc Improvements relating to dispensing of liquids
JPH01279094A (ja) * 1988-05-06 1989-11-09 Fuji Electric Co Ltd 炭酸飲料ディスペンサの冷却装置
US5332123A (en) 1992-06-22 1994-07-26 The Coca-Cola Company Device for the measured dispensing of liquids out of a storage container and synchronous mixing with a diluent

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0312241A1 (en) * 1987-10-13 1989-04-19 ABCC/TechCorp. Soft drink dispenser

Also Published As

Publication number Publication date
DK0433753T3 (da) 1994-10-31
AU644391B2 (en) 1993-12-09
ES2055281T3 (es) 1994-08-16
JP3330594B2 (ja) 2002-09-30
ATE107910T1 (de) 1994-07-15
DE3940879C1 (da) 1991-08-08
JPH046081A (ja) 1992-01-10
CA2032011C (en) 1996-11-05
DE59006313D1 (de) 1994-08-04
EP0433753A1 (de) 1991-06-26
AU6796290A (en) 1991-06-13
CA2032011A1 (en) 1991-06-12
ZA909623B (en) 1991-09-25

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