EP0251793A1 - Dispositif de distribution de liquide - Google Patents

Dispositif de distribution de liquide Download PDF

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Publication number
EP0251793A1
EP0251793A1 EP87305855A EP87305855A EP0251793A1 EP 0251793 A1 EP0251793 A1 EP 0251793A1 EP 87305855 A EP87305855 A EP 87305855A EP 87305855 A EP87305855 A EP 87305855A EP 0251793 A1 EP0251793 A1 EP 0251793A1
Authority
EP
European Patent Office
Prior art keywords
pump
pressure
line
control circuitry
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
EP87305855A
Other languages
German (de)
English (en)
Other versions
EP0251793B1 (fr
Inventor
Phillip Morgan
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.)
PEKTRON GROUP LIMITED
Original Assignee
Pektron Ltd
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 Pektron Ltd filed Critical Pektron Ltd
Priority to AT87305855T priority Critical patent/ATE77803T1/de
Publication of EP0251793A1 publication Critical patent/EP0251793A1/fr
Application granted granted Critical
Publication of EP0251793B1 publication Critical patent/EP0251793B1/fr
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
    • B67D1/1243—Flow control, e.g. for controlling total amount or mixture ratio of liquids to be dispensed to determine the total amount comprising flow or pressure sensors, e.g. for controlling pumps

Definitions

  • This invention is concerned with improvements in or relating to an arrangement for dispensing liquid, particu­larly carbonated beverages such as beer, under pressure from a container, for example to dispense in locations in a bar.
  • an arrangement for dispensing liquid under pressure from a supply comprising a pump, pressure sensitive means in the line between the pump and the dispensing means and electrical control circuitry including means operable by the pressure sensitive means, the circuitry being operable by way of the pressure sensitive means to automatically control the pump during dispense so as to maintain the pressure in the line at a desired operating level and thus provide a substantially constant rate of dispense.
  • the arrangement includes liquid flow sensing means in the line between the pump and the dispensing means, the control circuitry including further switch means operable by the liquid flow sensing means, and the circuitry being operable to switch on the pump in accordance with a reduction in pressure in the line from a preset level sensed by the pressure sensitive means, and being operable to switch off the pump when there is no liquid flow sensed by the liquid flow sensing means and the pressure in the line has reached the preset level.
  • control circuitry includes drive means for the pump whereby control of the pump can be effected by automatic adjustment of the speed of the pump.
  • the pump speed may be adjusted by means of phase angle control.
  • the operating level at which the pressure in the line is maintained may be pre-selected, and may be set by means of a manually adjustable potentiometer included in the control circuitry.
  • control circuitry may be operable to switch off the pump after a preset time delay when there is no liquid flow sensed by the liquid flow sensing means and the pressure on the line does not reach a preset level, this being indicative of no liquid in the line.
  • a pump control unit comprises a body 10 having a substantially cylindri­cal cross section defining a through bore 12 and preferivelyably formed of a moulded plastics material.
  • the body 10 has at one end thereof a flange 16 by means of which an internally threaded securing nut 18 is retained on the body 10.
  • the latter is arranged to be connected at said one end by means of the nut 18 to a delivery pipe 20 from a beer cask or barrel (not shown), an electrically operated pump 24 being operatively connected with the pipe 20.
  • the body 10 has an outlet connection 26 connected by means of a delivery pipe 28 having two branches to respective dispensing taps 30, 32.
  • a control member or a float 34 comprising a magnet inserted into a slug preferably of hollow plastics material and sealed with a close-fitting plug.
  • the bore 12 is stepped to define a shoulder 36 which limits movement of the float 34 in an upward direction as viewed in Fig. 1, when beer is flowing and at the lower end of the bore 12 there is provided a retaining bar 38 to retain the float 34 captive in the bore 12.
  • a housing 40 preferably formed of a plastics material, is positioned with one side adjacent to the body 10.
  • a pair of magnetic reed switches 42 are located in the housing 40 at said one side to be positioned close to an upper end of the bore 12, such that when flow of beer in the bore 12 occurs, the float 34 is moved to an upper postion in the bore 12, as shown by dotted lines, along­side the reed switches 42.
  • the affect of the magnet within the float 34 causes the reed switches 42 to move from a normally open to a closed position, thereby enabling flow to be detected.
  • a through aperture 44 is provided in a wall of the body 10 and is aligned with a through aperture 46 in the closely adjacent wall of the housing 40. Between the body 10 and the housing 40 a diaphragm 48 is located to cover the aligned apertures 44, 46.
  • a spring loaded pressure button 50 in the housing 40 is biassed against the diaphragm 48 such that any change in pressure of beer in the bore 12 results in a lateral movement of the diaphragm 48 and consequently movement of the pressure button 50 against the spring bias.
  • the pressure button 50 has attached thereto a magnet 52 which is associated with a Hall effect sensor 54, the latter being capable of detect­ ing any movement in the magnet 52 and thus in the pressure button 50 due to the pressure in the bore 12.
  • the sensor 54 gives a variable voltage and analogue output according to the position of the pressure button 50, which is prop­ortional to the pressure within the bore 12, whereby the pressure can be sensed.
  • Electronic control circuitry 56 has, in circuit, the reed switches 42 and the sensor 54 and is also in circuit with the electric pump 24.
  • a manually adjustable potentio­meter 58 included in the circuitry 56 is adjustable from externally of the housing 40, and a manual override button 60 is also in circuit with the circuitry 56 and is acces­sible from externally of the housing 40.
  • the system pressure is high and is at a level (P) predetermined by the control circuitry 56 (see Fig. 2).
  • This level (P) can be factory set and can be nominally set at 50 PSI.
  • the control circuitry 56 causes the beer pump 24 to run at full speed. The flow which is subsequently created in the bore 12 raises the float 34 alongside the reed switches 42.
  • the closure of the latter causes the control circuitry to adjust the speed of the beer pump 24 by means of phase angle control until the pressure detected within the bore 12 corresponds to an operating pressure setting C selected by the user by way of the pressure setting potentiometer 58.
  • the control circuitry 56 therefore switches to a constant pressure mode, the system pressure selected by the user determining the speed of dispense at the bar tap 30.
  • the control circuitry 56 is then arranged to automatically adjust the speed of the beer pump 24 until the pressure within the bore 12 once again corresponds to the setting C on the potentiometer 58.
  • the circuitry 56 by means of a closed loop feed­back system varies the speed of the beer pump 24 so as to maintain constant pressure in the line, despite anything which may occur so as to otherwise affect the system pressure during dispense.
  • the circuitry 56 will operate to maintain the pressure within the system constant at setting C.
  • the circuitry 56 When the circuitry 56 causes the beer pump 24 to run at full speed, i.e. if flow ceases in the bore 12 causing closure of the reed switches 42, if after a preset time period, for example of 30 seconds, either flow is not sensed by the reed switches 42 as a result of a tap being opened, or the pressure does not reach the preset level (P) if the beer taps are closed, the circuitry 56 operates to switch off the beer pump 24, on the assumption that the beer supply has run out.
  • the manual override button 60 enables this delay period to be restarted when attaching a new barrel or installing the equipment.
  • closed loop system can be used in any beverage dispense installation so to automatically maintain line pressure and thus flow rate at a substantially constant value during dispense.
  • control of the pump may be by other than speed control, and the configuration of certain of the components may differ from that described and shown, provided the components function in the required manner.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Devices For Dispensing Beverages (AREA)
  • Devices For Use In Laboratory Experiments (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Fire-Extinguishing Compositions (AREA)
EP87305855A 1986-07-02 1987-07-01 Dispositif de distribution de liquide Expired - Lifetime EP0251793B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87305855T ATE77803T1 (de) 1986-07-02 1987-07-01 Fluessigkeitsspendevorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8616106 1986-07-02
GB868616106A GB8616106D0 (en) 1986-07-02 1986-07-02 Liquid dispensing arrangement

Publications (2)

Publication Number Publication Date
EP0251793A1 true EP0251793A1 (fr) 1988-01-07
EP0251793B1 EP0251793B1 (fr) 1992-07-01

Family

ID=10600419

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87305855A Expired - Lifetime EP0251793B1 (fr) 1986-07-02 1987-07-01 Dispositif de distribution de liquide

Country Status (4)

Country Link
EP (1) EP0251793B1 (fr)
AT (1) ATE77803T1 (fr)
DE (1) DE3780093T2 (fr)
GB (2) GB8616106D0 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0509602A1 (fr) * 1991-04-16 1992-10-21 Ugolini S.P.A. Appareil distributeur de boissons
EP0676367A1 (fr) * 1994-04-08 1995-10-11 Digmesa Ag Dispositif de protection pour une pompe à installer dans des conduites de liquides, en particulier d'eau, et dispositif d'alimentation en liquide
EP2611728A4 (fr) * 2010-08-30 2015-07-22 Flow Control LLC Système de distribution de liquide commandé électroniquement et présentant une conception modulaire de tubage et d'alimentation
EP3578505A1 (fr) * 2018-06-07 2019-12-11 Günther Gruber Module de commande d'installation de comptoir ainsi que procédé de fonctionnement d'un module de commande d'installation de comptoir

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2247920B (en) * 1990-08-28 1994-07-27 Whitbread And Company Public L A pump controller
GB9207384D0 (en) * 1992-04-03 1992-05-13 Diversey Corp Dispenser
US5896898A (en) * 1993-04-05 1999-04-27 Diversey Lever, Inc. Dispenser
DE19914581A1 (de) † 1999-03-31 2000-10-12 Grundfos A S Bjerringbro Kreiselpumpenaggregat
DE10255514A1 (de) * 2002-11-27 2004-06-09 Endress + Hauser Gmbh + Co. Kg Druckregelverfahren zur Vermeidung von Kavitationen in einer verfahrenstechnischen Anlage
DE10257593A1 (de) * 2002-12-09 2004-07-01 Endress + Hauser Flowtec Ag, Reinach Verfahren zum Abfüllen einer definierten Menge eines Mediums in einem Behälter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4006840A (en) * 1975-07-07 1977-02-08 American Beverage Control Beverage dispenser having flow-actuated sensing means
GB1545447A (en) * 1977-11-05 1979-05-10 Pektron Ltd Arrangement for dispensing liquids
GB2094269A (en) * 1981-03-06 1982-09-15 Distillers Co Carbon Dioxide Apparatus for dispensing beer or other liquid from a container
US4456149A (en) * 1981-10-21 1984-06-26 Venturon Corporation, Inc. Water dispensing system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT1097B (fr) * 1898-05-09 1900-03-26 Filter Und Brautechnische Masc
GB1417401A (en) * 1972-03-20 1975-12-10 Wade Son Ltd J T Liquid pumping system
GB1360225A (en) * 1972-10-19 1974-07-17 Distillers Co Carbon Dioxide Carbonated liquid moving apparatus
GB2177523B (en) * 1985-07-01 1989-07-19 Partridge Wilson And Company L A system for dispensing a liquid
GB8520889D0 (en) * 1985-08-21 1985-09-25 T & P England Ltd Controlling pumps

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4006840A (en) * 1975-07-07 1977-02-08 American Beverage Control Beverage dispenser having flow-actuated sensing means
GB1545447A (en) * 1977-11-05 1979-05-10 Pektron Ltd Arrangement for dispensing liquids
GB2094269A (en) * 1981-03-06 1982-09-15 Distillers Co Carbon Dioxide Apparatus for dispensing beer or other liquid from a container
US4456149A (en) * 1981-10-21 1984-06-26 Venturon Corporation, Inc. Water dispensing system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0509602A1 (fr) * 1991-04-16 1992-10-21 Ugolini S.P.A. Appareil distributeur de boissons
EP0676367A1 (fr) * 1994-04-08 1995-10-11 Digmesa Ag Dispositif de protection pour une pompe à installer dans des conduites de liquides, en particulier d'eau, et dispositif d'alimentation en liquide
EP2611728A4 (fr) * 2010-08-30 2015-07-22 Flow Control LLC Système de distribution de liquide commandé électroniquement et présentant une conception modulaire de tubage et d'alimentation
EP3578505A1 (fr) * 2018-06-07 2019-12-11 Günther Gruber Module de commande d'installation de comptoir ainsi que procédé de fonctionnement d'un module de commande d'installation de comptoir

Also Published As

Publication number Publication date
GB2193704B (en) 1989-12-13
GB2193704A (en) 1988-02-17
DE3780093T2 (de) 1993-01-21
DE3780093D1 (de) 1992-08-06
ATE77803T1 (de) 1992-07-15
GB8715467D0 (en) 1987-08-05
GB8616106D0 (en) 1986-08-06
EP0251793B1 (fr) 1992-07-01

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