EP1499558B1 - Distributeur de liquide pressurise - Google Patents

Distributeur de liquide pressurise Download PDF

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Publication number
EP1499558B1
EP1499558B1 EP03720744A EP03720744A EP1499558B1 EP 1499558 B1 EP1499558 B1 EP 1499558B1 EP 03720744 A EP03720744 A EP 03720744A EP 03720744 A EP03720744 A EP 03720744A EP 1499558 B1 EP1499558 B1 EP 1499558B1
Authority
EP
European Patent Office
Prior art keywords
chamber
dispenser
pressure
gas
liquid
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
EP03720744A
Other languages
German (de)
English (en)
Other versions
EP1499558A1 (fr
Inventor
Christopher Simon Courtenay Wheaton
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.)
Cypherco Ltd
Original Assignee
Cypherco 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 Cypherco Ltd filed Critical Cypherco Ltd
Publication of EP1499558A1 publication Critical patent/EP1499558A1/fr
Application granted granted Critical
Publication of EP1499558B1 publication Critical patent/EP1499558B1/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
    • B67D1/04—Apparatus utilising compressed air or other gas acting directly or indirectly on beverages in storage containers
    • B67D1/0406—Apparatus utilising compressed air or other gas acting directly or indirectly on beverages in storage containers with means for carbonating the beverage, or for maintaining its carbonation

Definitions

  • This invention relates to a dispenser which is pressurised to dispense liquid, particularly, but not exclusively, beer.
  • US-A-3 024 800 describes a dispenser according to the preamble of claim 1.
  • a container for storing and dispensing a liquid under pressure comprising a liquid chamber and a separate chamber for a pressurising fluid, with a pressure regulator for allowing the pressurising fluid to be introduced into the liquid chamber when the pressure therein is below a predetermined level.
  • the container is made up of a generally cylindrical rear section to which a generally cylindrical front section is secured by a continuous internal weld, and a tapered section which is welded at its larger end to the front section.
  • the liquid chamber is defined within the rear and tapered sections, whilst the pressurising fluid chamber is defined between the front section and the tapered section, with the pressure regulator in a wall of the tapered section.
  • a dispenser comprises an outer chamber, which is intended to contain gas at a first pressure, in use, an inner chamber, which is intended to contain liquid to be dispensed therefrom, the outer chamber at least partly surrounding the inner chamber, and control means reducing the pressure of said gas, in use, from said first pressure in said outer chamber to a lower second pressure in said inner chamber, and maintaining said second pressure in said inner chamber as liquid is dispensed therefrom, in use, a plastics material casing of the inner chamber being connected to a casing of the outer chamber by a plurality of ribs/webs.
  • said outer chamber acts, in use, as an insulation layer to maintain chilled the liquid in said inner chamber.
  • the outer chamber has a non-return valve for charging it with gas in an appropriate quantity and at an appropriate pressure.
  • liquid is dispensed, in use, from the inner chamber through a valve in an opening thereof.
  • the outer and inner chambers are each of U-shape in longitudinal cross-section, and of annular and circular shape respectively in lateral cross-section, and each rib/web in the outer chamber is of U-shape, with its respective free ends terminating short of an upper end of the outer chamber.
  • the invention also relates to such a dispenser which has been charged with said gas in its outer chamber and said liquid in its inner chamber.
  • FIG. 1 Illustrated in Figure 1 is one embodiment of a dispenser according to the present invention.
  • the dispenser is primarily intended for the dispensing of beer, and will be described in relation thereto hereinafter, it will be understood that it can be utilised for dispensing liquids other than beer.
  • the invention relates to a small keg for dispensing beer in restaurants or homes. By maintaining a constant pressure on the beer it is ensured that the taste, flavour and presentation of beer dispensed from the keg is optimised.
  • the dispenser comprises an outer casing 10 which is of generally cylindrical form having its top end open and its lower end formed with an inner convex domed portion 11 around the outside of which is formed an outer annular support portion 12 which, in use, rests on the surface, with the portion 11 disposed above said surface and the dispenser in an upright state.
  • an inner casing 13 which, like the outer casing 10, is generally cylindrical with its upper end open and at approximately the same level as the open end of the outer casing.
  • the lowermost part of the inner casing is wholly domed, as at 14, the curvature of the part 14 matching the curvature of the portion 11.
  • the inner casing is spaced around both its cylindrical part and also its domed part from the outer casing so as to define by way of said spacing an outer, high pressure gas chamber denoted at 15.
  • the inner casing is of plastics material, and whilst the outer casing is preferably also formed of plastics material, it could be of metal, for example aluminium.
  • a top closure portion 16 which is of generally domed form. However at its centre this portion 16 is provided with an upwardly extending, externally threaded boss 17 with a circular opening therethrough. Fitted at said boss is a valve denoted generally by the numeral 18. Extending from the valve 18 to a position close to the bottom inner surface of the inner casing 13 is an outlet pipe 19 for the discharge of liquid from the inner casing 13 through the valve 18.
  • the valve 18 can be of known type of any suitable form, it merely being necessary that the outlet from the valve is sealed, for example by spring loading, in the normal state of the dispenser, depression of a sealing member against said spring loading, when liquid is to be dispensed, resulting in liquid from the interior of the casing 13 flowing upwardly through the outlet pipe 19 and then through the valve 18 and out of the dispenser.
  • the top closure portion 16 is formed with a downwardly depending annular flange 20 which seals with the upper open end of the outer casing 10 in any convenient manner.
  • the upper annular edge of the outer casing is received in a groove in the lower annular surface of the flange 20.
  • Spaced inwardly of the annular flange 20 is a further downwardly depending annular flange 21, which is thus substantially parallel to the flange 20, this flange 21 having its inner surface sealing against the outer annular surface at the upper open end of the inner casing 13. Again, however, this sealing can be effected in any other suitable manner.
  • the dispenser is in the form of a closed container comprising the outer high pressure gas chamber 15 between the inner and outer casings and, as will be described, an inner, lower pressure liquid chamber 22 in the space bounded by the top closure portion 16 and the inner casing 13 to which it is sealed by said flange 21.
  • an integral housing part 23 which contains control means in the form of a regulator 24.
  • An inlet is provided into said regulator from said gas chamber 15, whilst an outlet is provided therefrom to the liquid chamber defined by the inner casing 13 and top closure portion 16. If required a vent hole to atmosphere can be provided at said housing part.
  • a non-return valve by means of which the gas chamber 15 can be charged with gas in the appropriate quantity and pressure, as will be described, to facilitate the dispense of liquid from the liquid chamber.
  • the means for charging the gas chamber 15 could be of any suitable form and at any other suitable position.
  • the inner casing 13 of the liquid chamber 22 is attached to the outer casing 10 of the gas chamber 15 by a number of equi-angularly spaced ribs or webs 25 which extend across the gas chamber 15 from the outer cylindrical surface of the casing 13 to the inner cylindrical surface of the casing 10.
  • the ribs are of plastics material, but they could be metallic. They could be integral with one or both of the outer and inner casings, depending on the materials used therefor.
  • each rib or web 25 can also extend between the domed portion 14 and the domed portion 11, and also possibly between the domed portion 11 and support portion 12. As shown in Figure 1, each rib or web terminates below the top of the gas chamber to allow the gas to flow around the whole chamber 15 despite the presence of the ribs or webs 25. Apertures could be provided in the ribs or webs to permit gas flow, and would be provided if each rib extended up to the top of the gas chamber, i.e. filled the chamber as a planar structure.
  • the use of the ribs or webs connecting the inner casing to the outer casing enables a strength and stiffness to be imparted to the fabric of the inner casing which would not otherwise be present. This strength is due to the casings being connected by a rigid rib or web. This strength is beneficial in that it allows the use of a suitable plastics material for the inner casing which is primarily suitable for contact with 'food' products, such as beer, but does not have the strength to withstand the total pressure. Structural strength is imparted to the inner casing by means of the ribs/webs, and the outer casing can be made of a much more structurally appropriate material, as it is not in contact with the beverage and thus does not have to meet food contact regulations. The pressure of the stored gas can thus be increased, providing an extension in the operating range of the dispenser whilst using a plastics material inner casing.
  • the dispenser of the invention shown in Figure 1 differs patentably in having at least its inner casing made of plastics, with the rigid support between the inner and outer casings allowing for a much stronger construction than with the unsupported equivalent prior art casings.
  • different materials can be used for the two casings, so as to obtain both the mechanical strength and also to meet the requirements for food contact.
  • the liquid chamber will be filled, or at least partly filled, with liquid to be dispensed, such, as described, as beer.
  • the gas chamber 15 is charged with a suitable gas at a pressure higher than the dispense pressure required for the beer contained in the liquid chamber.
  • the regulator 23 controls the gas pressure in the liquid chamber, by reducing the gas at the higher pressure in the gas chamber to a level in the liquid chamber which is that required for the correct dispense of the beer.
  • a gas pressure in the chamber 15 typically between 1 and 7 bars (10 5 Nm -2 to 7 x 10 5 Nm -2 ), whilst typically a dispense pressure of the liquid is between 0.5 to 2.5 bar (0.5 x 10 5 Nm -2 to 2.5 x 10 5 Nm -2 ).
  • the regulator would normally be pre-set so that a user cannot interfere with the pressure settings for dispense, this is not essential and the regulator could be of a type which is adjustable by a user.
  • the maintenance of a constant dispense pressure is very important when dealing with beer, and the ability to maintain the required constant pressure as determined by the regulator setting is an important feature of the invention.
  • the keg described and illustrated is formed 'all-in-one', i.e. it incorporates the gas regulator, it is nevertheless of compact construction by having the gas chamber around the liquid chamber and having the reduction of the gas from high pressure to lower pressure carried out within a convenient part of the keg. This makes the keg particularly suitable for home use.
  • the gas chamber also acts as an insulation layer, so that once the beer has been cooled, then the gas chamber acts as an insulator to maintain the beer in the liquid chamber at a chilled temperature.
  • the dispense head of a keg has had to handle both gas and beer, in that gas must flow into the container to enable the beer to be dispensed from a tap connected to the valve on the top of the keg.
  • gas must flow into the container to enable the beer to be dispensed from a tap connected to the valve on the top of the keg.
  • the keg of the invention only the beer or other liquid is handled through the dispense head because the gas compensation into the liquid chamber is carried out automatically within the confines of the keg.
  • the reduced pressure gas is fed directly into the liquid chamber without firstly having to come out of the high pressure gas cylinder through an external regulator and then back into the liquid chamber.
  • Figures 2 and 3 show an alternative form of arrangement for the outer and inner casings 10a and 13a respectively, namely that they are each of true U-shape in longitudinal (vertical) cross-section, with their respective free ends terminating at the same level.
  • the four U-shaped ribs/webs 25a fill the gas chamber up to a level a short way below the top thereof, and provide the eight equi-angularly spaced ribs or webs shown in Figure 2.
  • the ribs/webs can be varied in number, need not be equi-angularly spaced, could extend to different heights in the U-shaped chamber and could be perforated.
  • the ribs/webs interconnect the casings 10a and 13a and, as with the first embodiment, could be integral with one or both of the casings.
  • Suitable plastics materials for the inner casing include acetyl, polyamide, polyethylene terethalate, polyethylene and polypropylene. Such materials could also be used for the outer casing and/or the ribs/webs if these are of plastics material.

Landscapes

  • Devices For Dispensing Beverages (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Coating Apparatus (AREA)
  • Closures For Containers (AREA)
  • Reciprocating Pumps (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Claims (12)

  1. Distributeur comprenant une chambre intérieure (22) destinée à contenir un liquide devant être distribué depuis la chambre et définie par une enveloppe intérieure (13), une chambre extérieure (15) qui, lors de l'utilisation, est destinée à contenir un gaz soumis à une première pression et est définie, au moins en partie, par une enveloppe extérieure (10), la chambre extérieure entourant au moins partiellement la chambre intérieure, et un moyen de commande (24) pour réduire la pression dudit gaz, lors de l'utilisation, de manière à ce qu'elle passe de ladite première pression dans ladite chambre extérieure à une seconde pression inférieure dans ladite chambre intérieure, et pour maintenir ladite seconde pression dans ladite chambre intérieure à mesure que le liquide est distribué depuis cette dernière, lors de l'utilisation, caractérisé par le fait que ladite enveloppe intérieure est formée d'une matière plastique et est reliée à ladite enveloppe extérieure par une pluralité de nervures ou âmes (25).
  2. Distributeur selon la revendication 1, dans lequel la chambre extérieure agit, lors de l'utilisation, comme une couche isolante pour maintenir au frais le liquide contenu dans ladite chambre intérieure.
  3. Distributeur selon la revendication 1 ou la revendication 2, dans lequel la chambre extérieure est pourvue d'une soupape de non-retour de manière à être remplie d'une quantité appropriée de gaz à une pression appropriée.
  4. Distributeur selon l'une quelconque des revendications 1 à 3, adapté pour distribuer un liquide, lors de l'utilisation, depuis la chambre intérieure par le biais d'une soupape dans une ouverture de la chambre.
  5. Distributeur selon l'une quelconque des revendications précédentes, dans lequel la chambre extérieure a une section transversale longitudinale en forme de U.
  6. Distributeur selon l'une quelconque des revendications précédentes, dans lequel les chambres intérieure et extérieure ont une section transversale latérale de forme annulaire et circulaire, respectivement,
  7. Distributeur selon la revendication 5, dans lequel chaque nervure ou âme dans la chambre extérieure à une forme en U.
  8. Distributeur selon la revendication 7, dans lequel les extrémités libres de chaque nervure se terminent non loin d'une extrémité supérieure de la chambre extérieure.
  9. Distributeur selon l'une quelconque des revendications précédentes, dans lequel les nervures sont espacées de manière équidistante à l'intérieur de la chambre extérieure.
  10. Distributeur selon l'une quelconque des revendications précédentes, dans lequel chaque nervure est formée d'une matière plastique.
  11. Distributeur selon l'une quelconque des revendications précédentes, dans lequel l'enveloppe de la chambre extérieure est formée d'une matière plastique.
  12. Distributeur selon l'une quelconque des revendications 1 à 11, comprenant ledit gaz dans sa chambre extérieure et ledit liquide dans sa chambre intérieure.
EP03720744A 2002-05-01 2003-04-30 Distributeur de liquide pressurise Expired - Lifetime EP1499558B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0209912 2002-05-01
GBGB0209912.5A GB0209912D0 (en) 2002-05-01 2002-05-01 Dispenser
PCT/GB2003/001848 WO2003093162A1 (fr) 2002-05-01 2003-04-30 Distributeur de liquide pressurise

Publications (2)

Publication Number Publication Date
EP1499558A1 EP1499558A1 (fr) 2005-01-26
EP1499558B1 true EP1499558B1 (fr) 2005-08-31

Family

ID=9935826

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03720744A Expired - Lifetime EP1499558B1 (fr) 2002-05-01 2003-04-30 Distributeur de liquide pressurise

Country Status (9)

Country Link
US (1) US20060049213A1 (fr)
EP (1) EP1499558B1 (fr)
AT (1) ATE303341T1 (fr)
AU (1) AU2003224319A1 (fr)
DE (1) DE60301499T2 (fr)
ES (1) ES2247532T3 (fr)
GB (1) GB0209912D0 (fr)
HK (1) HK1068125A1 (fr)
WO (1) WO2003093162A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2174888A4 (fr) * 2007-08-09 2016-06-22 Asahi Breweries Ltd Réceptacle pour boisson et système de refroidissement de celui-ci
US9475607B2 (en) * 2008-10-01 2016-10-25 Rehrig Pacific Company Plastic beer keg
EP2421762B1 (fr) 2009-04-20 2016-02-10 Rehrig Pacific Company Fût à bière en matière plastique
EP2258629B1 (fr) * 2009-06-05 2013-09-18 Eurokeg B.V. Conteneur pour boisson pressurisée, en particulier une bière, et procédé de remplissage d'un conteneur avec une boisson pressurisée
NL2003133C2 (en) * 2009-07-03 2011-01-04 Heineken Supply Chain Bv Tapping apparatus and compressible bottle therefore, and a preform for forming such container.
US8967407B2 (en) * 2009-07-27 2015-03-03 Rehrig Pacific Company Plastic beer keg
US9434505B2 (en) * 2010-01-26 2016-09-06 Rehrig Pacific Company Plastic beer keg
EP2450290B1 (fr) * 2010-11-09 2014-03-19 Rehrig Pacific Company Fût de bière en plastique
US9045325B2 (en) 2010-11-09 2015-06-02 Rehrig Pacific Company Plastic beer keg
DE202011050795U1 (de) * 2011-07-22 2011-09-12 Holger Blum Behälter für flüssige Chemikalien
CA2895614A1 (fr) 2014-06-23 2015-12-23 Rehrig Pacific Company Baril de biere en plastique
CN110605288B (zh) * 2019-10-12 2024-07-19 广州达意隆包装机械股份有限公司 分配器及洗瓶机

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AUPQ105099A0 (en) * 1999-06-18 1999-07-08 Carlton And United Breweries Limited Beer container

Also Published As

Publication number Publication date
US20060049213A1 (en) 2006-03-09
WO2003093162A1 (fr) 2003-11-13
ES2247532T3 (es) 2006-03-01
GB0209912D0 (en) 2002-06-05
EP1499558A1 (fr) 2005-01-26
DE60301499T2 (de) 2006-06-22
AU2003224319A1 (en) 2003-11-17
DE60301499D1 (de) 2005-10-06
HK1068125A1 (en) 2005-04-22
ATE303341T1 (de) 2005-09-15

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