EP4093697A1 - Piston, robinet de soutirage et réservoir de boissons - Google Patents

Piston, robinet de soutirage et réservoir de boissons

Info

Publication number
EP4093697A1
EP4093697A1 EP21854742.0A EP21854742A EP4093697A1 EP 4093697 A1 EP4093697 A1 EP 4093697A1 EP 21854742 A EP21854742 A EP 21854742A EP 4093697 A1 EP4093697 A1 EP 4093697A1
Authority
EP
European Patent Office
Prior art keywords
piston
regions
web
tap
region
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
EP21854742.0A
Other languages
German (de)
English (en)
Other versions
EP4093697B1 (fr
EP4093697C0 (fr
Inventor
Catharina SANDER
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.)
Ao Tech Ug Haftungsbeschraenkt
Original Assignee
Ao Tech Ug Haftungsbeschraenkt
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 Ao Tech Ug Haftungsbeschraenkt filed Critical Ao Tech Ug Haftungsbeschraenkt
Publication of EP4093697A1 publication Critical patent/EP4093697A1/fr
Application granted granted Critical
Publication of EP4093697B1 publication Critical patent/EP4093697B1/fr
Publication of EP4093697C0 publication Critical patent/EP4093697C0/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B67D3/00—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes
    • B67D3/04—Liquid-dispensing taps or cocks adapted to seal and open tapping holes of casks, e.g. for beer
    • B67D3/045—Liquid-dispensing taps or cocks adapted to seal and open tapping holes of casks, e.g. for beer with a closing element having a linear movement, in a direction parallel to the seat
    • 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
    • B67D3/00—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes
    • B67D3/04—Liquid-dispensing taps or cocks adapted to seal and open tapping holes of casks, e.g. for beer
    • B67D3/047—Liquid-dispensing taps or cocks adapted to seal and open tapping holes of casks, e.g. for beer with a closing element having a rotational movement

Definitions

  • the invention relates to a piston for a tap for removing a beverage from a container, preferably beer from a beer keg, particularly preferably beer from a 5L party beer keg, comprising an inner flow channel, an inlet opening and an outlet opening, the inner Flow channel is formed in the piston and for guiding the beverage from the inlet opening to the outlet opening and wherein the piston has a plurality of webs on an outer side.
  • the invention also relates to a tap for removing a drink from a container, preferably beer from a beer keg, particularly preferably beer from a 5L party beer keg, and a corresponding container for a drink.
  • the present invention relates generally to beverage containers, faucets and faucet plungers. It is mainly about smaller beer kegs, for example so-called party kegs with a capacity of five liters. Such party kegs are well known from practice and are regularly made of tinplate. Without restricting the generality, a beer keg or a party beer keg is primarily discussed below as preferred embodiments.
  • kegs Five liters of beer are provided in such party kegs.
  • a ventable plug is provided so that air can flow in from above, namely to avoid negative pressure in the barrel.
  • the keg is aerated through the opening that the stopper closes.
  • a tap for such beverage containers is known from DE 101 12 451 A1.
  • the tap includes a sleeve and a plunger disposed within the sleeve. When delivered, the piston is fully accommodated in the sleeve. To remove the beverage, the plunger is partially pulled out of the sleeve into a working position. Removal of the beverage is started by rotating the piston about a central axis of the sleeve.
  • WO 2010/069340 A1 also comprises a sleeve and a piston.
  • the piston can in turn be moved within the sleeve between a closed position and a working position.
  • a pivotable outlet head is arranged on the end of the piston facing away from the sleeve. When the outlet head is in a blocked position, dispensing of a beverage is blocked. After throwing the outlet head into a removal position, the beverage can be removed through an inflow opening on the sleeve, an inner flow channel formed in the piston and a removal opening on the outlet head.
  • the present invention is based on the object of designing and developing a piston, a tap and a beverage container of the type mentioned at the outset in such a way that the piston can be moved within the sleeve of the tap with the least possible effort, without sacrificing sufficient stability.
  • the piston in question is characterized in that at least one of the plurality of webs is designed as a stepped web, the at least one stepped web having a plurality of first regions and at least has a second region arranged between adjacent first regions, the plurality of first regions being designed to touch a wall of the piston chamber when the piston is arranged in a piston chamber, and the at least one second region being designed as a recess relative to the plurality of first regions is.
  • the tap in question comprises a sleeve and a piston according to the invention, the piston being at least partially arranged in a piston chamber of the sleeve, an inflow opening being formed in the sleeve through which the beverage can flow into the piston chamber, the plurality of first Areas of the at least one stepped web touch a wall of the piston chamber, while the at least one second area is spaced apart from the wall of the piston chamber.
  • At least one container wall defines a capacity inside the container, with a tap according to the invention being guided through one of the at least one container walls, which tap enables a beverage to be removed from the capacity.
  • the piston is therefore redesigned according to the invention in such a way that the contact surface between the piston and the wall of the piston chamber is reduced, but at the same time there are still sufficient contact points to keep the piston stable in the sleeve.
  • a recess is provided on at least one web on the outside of the piston, which produces at least one area of the web spaced apart from a wall of the piston chamber.
  • the at least one recess also offers the advantage that when the piston moves in the piston chamber, less lubricant is scraped off by the web, which can improve the lubricating properties between the piston and the sleeve overall. This creates a tap where the plunger is easier to move in the sleeve and yet the plunger is stable in the sleeve.
  • this approach according to the invention is implemented in that at least one of the several webs on the outside of the piston is designed as a stepped web.
  • a stepped web has a plurality of first areas and at least one second area, with a second area being arranged between two adjacent first areas.
  • first and second areas should usually alternate.
  • the plurality of first regions are designed to touch a wall of the piston chamber when the piston is arranged in a piston chamber. Since the at least one second area is in each case designed as a recess relative to the first areas, the second area is arranged at a distance from this wall of the piston chamber.
  • the length ratio between the first and second areas is preferably at least 1 to 1, more preferably at least 1 to 2, most preferably about 1 to 3.
  • the term "land” generally refers to an outer surface structure of the piston.
  • the pistons in question are not formed from a solid material, but rather have a structured outside.
  • the inner flow channel which can be surrounded by webs, runs inside the piston.
  • the webs thus serve the stability of the piston and are - to simplify the production - mostly straight.
  • the webs have outer edges which—together with any other surfaces—touch a wall of a piston chamber in an assembled state.
  • a piston space is formed in a non-moving part of a tap. This non-moving part is usually a sleeve that is guided through a container wall of a beverage container.
  • a "wall of the piston chamber” is usually the wall that delimits the piston chamber in a transverse direction. In the case of a cylindrical piston space, this wall is, for example, the outer surface of the cylinder.
  • a "touching" of the plurality of first areas with the wall of the piston chamber can mean that the plurality of first areas and the wall of the piston chamber are formed at least partially in a form-fitting manner.
  • touching can already occur when the several first areas come very close to the wall and the distance between a first area and the wall is less than one millimeter, preferably less than 0.5 millimeter, particularly preferably less than 0.1 millimeter.
  • a deliberately existing distance between one of the several first areas and the wall can contribute to further reducing the pull-out forces to be applied.
  • a first area with a deliberately existing distance can be appropriate, for example, in the case of first areas that are arranged close to the outlet opening.
  • a "recess" on a stepped web can be designed in different ways. It is essential that the recess achieves a spacing between a second area and a wall of the piston chamber.
  • the outer edge of the second area can be designed in various ways for this purpose.
  • the outer edge can be straight, straight in sections, or curved.
  • the piston or the tap can be manufactured differently and consist of different materials.
  • the plunger or the tap is preferably produced by injection molding.
  • the plunger or spigot may be made of polypropylene, a polymer and/or other plastic. It is also conceivable for the piston and/or the sleeve to be made from polypropylene, for example, and for a sealant to be injection-molded on using a thermoplastic polymer, for example in an overmoulding process.
  • the multiple webs can run relatively arbitrarily relative to the piston. This includes sloping ridges as well as non-linear ridges. However, in terms of production technology, special extension directions can be advantageous.
  • the multiple webs extend in a longitudinal direction of the piston and/or in a transverse direction of the piston.
  • the at least one stepped web preferably extends in a longitudinal direction of the piston. This design simplifies the design of the injection molds, in particular when the piston is produced by injection molding.
  • the recesses of at least two of the plurality of second regions are of identical design.
  • the recesses of at least two of the plurality of second regions are configured differently. In this way, specific requirements for the stepped web can be addressed even more flexibly.
  • three second areas can be present, two of which are of identical design and a third differs from the other two second areas. This means that two of the multiple areas are identical and at least two of the multiple areas are different from one another.
  • outwardly facing edges of the plurality of first regions lie on a straight line or a circle, with the straight line preferably being arranged parallel to a central axis of the piston in the case of a straight line and with the circle preferably having a center point on the central axis of the piston in the case of a circle Has piston.
  • an outward-facing edge in the plurality of first regions and an outward-facing edge in the at least one second region are each parallel or coaxial with one another. This can be achieved, for example, in that the outer edges of the first and second regions are formed at least partially straight (in the case of a web in the longitudinal direction) or as an arc of a circle (in the case of a web in the transverse direction).
  • the at least one second region has a transition region at an end facing a first region, with an outward-facing edge of the transition region bringing about a preferably continuous transition between adjacent first and second regions, with the outward-facing edge of the transition region preferably is inclined at an angle of between 30° and 70° relative to a line connecting the first regions. In this way, continuous transitions can be created, which can further reduce friction between the piston and a wall of the piston chamber.
  • an outwardly facing edge is rounded off between a first area and a second area. This measure can further reduce friction between the piston and a wall of the piston chamber.
  • an envelope surface around the piston is cylindrical.
  • An enveloping surface is formed by approximating outer edges of the plurality of webs or other parts of the piston by a geometric figure.
  • a cylindrical enveloping surface is particularly appropriate when the piston chamber is of cylindrical design.
  • the base of the cylinder is preferably a circle, an ellipse, a hexagon, an octagon or the like. Enveloping surfaces of this type lead to pistons that are easy to construct.
  • the webs have, for example, a width between 5% and 45% of the extension of the piston in a transverse direction of the piston, preferably a width between 15% and 35% of the extension of the piston in a transverse direction of the piston.
  • sufficient material should remain inside the piston to be able to accommodate an inner flow channel.
  • a preferred width of a web between 15% and 35% of the expansion of the piston in a transverse direction of the piston can represent a favorable compromise between the conflicting objectives.
  • a first web and a second web intersect in a cutting line, the first web and/or the second web being a stepped web and one of the first areas of the stepped web being arranged in the area of the cutting line.
  • This embodiment can be used particularly favorably when the first web extends in the longitudinal direction and the second web extends in the transverse direction.
  • the tap comprises an outlet head with a discharge opening, the discharge head being pivotable between a blocked position and a discharge position, and the discharge head being adapted to the piston in such a way that in the discharge position the beverage can flow from the discharge opening to the discharge opening .
  • an outlet head is described, for example, in the already mentioned WO 2010/069340 A1.
  • the piston is designed to be displaceable in the piston chamber between a closed position and a working position in the longitudinal direction of the sleeve, the sleeve and the piston being matched to one another in such a way that in the working position the beverage can flow through the inflow opening into the inlet opening. In this way, the beverage container can be transported safely in the closed position, while the beverage can be reliably removed in the working position.
  • FIG. 1 is an oblique view of an embodiment of a piston for a tap according to the invention
  • FIG. 2 is a plan view from above of the piston according to FIG. 1,
  • Fig. 3 is a side view of the piston of FIG. 1 and
  • FIG. 4 shows an exploded view of an embodiment of a tap according to the invention with a piston according to FIG. 1.
  • Figures 1 to 3 show different views of an embodiment of a piston 1 according to the invention for a tap.
  • the piston 1 has an inlet opening 2 and an outlet opening 3 as well as an inner flow channel 4 which connects the inlet opening 2 and the outlet opening 3 to one another.
  • an inlet-side seal 5 is injection molded, which extends over large parts of a longitudinal side of the piston 1 .
  • a seal 6 on the outlet side is molded onto opening 3 and serves to seal an outlet head, not shown here. This outlet head can be attached to the piston 1 on a rotary axis 7 .
  • Webs 8 , 8 ′ are arranged around the inner flow channel 4 and extend in the longitudinal direction (webs with reference number 8 ) or transverse direction (webs with reference number 8 ′) of the piston 1 .
  • Webs 8 intersect in the longitudinal direction and webs 8 ′ in the transverse direction.
  • These stepped webs 9 have four first areas 10 and three second areas 11, the second areas 11 being arranged between two adjacent first areas 10 in each case.
  • An outer edge of the first areas 10 and the second areas 11 is arranged parallel to a central axis 12 of the piston 1 . It can also be seen in particular in FIG. 2 that the recesses of the two outer second regions 11 are of identical design, while the central second region 11 differs from the two outer second regions, namely has a smaller recess.
  • the stepped webs 9 each have a width of approximately 25% of the extent of the piston 1 in a transverse direction, the width being measured from the base of the web 9 at the inner flow channel to the outer edge in a first region 10 .
  • the second areas 11 have a transition area at the ends facing the adjoining first area 10
  • transition area 13 is inclined relative to a connecting line of the first areas 10, namely at an angle of approximately 55°.
  • the outwardly facing edge between a first area 10 and a second area 11 is also rounded in order to further reduce the friction of the piston 1 in a piston chamber.
  • the piston 1 is arranged in a piston chamber 14 which is cylindrical and is shown in simplified form in cross section in FIG. It can be seen that the first areas 10 are a wall 15 of the piston chamber
  • the two first areas 10 on the left are in direct contact with the wall 15 , which can also include a lubricant introduced between the first area 10 and the wall 15 .
  • a small distance can be seen between the two first areas 10 on the right and the wall 15 . This configuration makes it easier to pull the piston 1 out of a closed position into a working position. Specifically, this reduces the pull-out forces without impairing the stability of the tap.
  • FIG. 4 shows an exploded drawing of an embodiment of a tap 16 which comprises a sleeve 17, a piston 1 and an outlet button 18.
  • FIG. The sleeve 17 can be pushed into a container wall 19 (shown here in simplified form) of a beverage container.
  • the container wall 19 defines a capacity 20 which is designed to hold a drink, for example beer.
  • the piston 1 is adapted to the piston space 14 in such a way that the piston 1 can be accommodated at least partially in the piston space 14 and that the outer edges of the first regions 10 touch a wall of the piston space 14 .
  • the outlet button 18 is designed to be pivotable via the axis of rotation 7 .
  • the plunger 1 and the outlet head 18 When the plunger 1 and the outlet head 18 are pushed completely into the plunger chamber 14, the plunger 1 is in a closed position.
  • a drink contained in the capacity 20 can pass through an inflow opening 21 on the sleeve 17 and the inlet opening 2 into the inner flow channel 4 and to the outlet opening 3 .
  • the outlet button 18 If the outlet button 18 is in a blocked position (as shown in FIG. 4 ), the beverage cannot reach a dispensing opening 22 on the outlet button 18 . If the outlet button 18 is pivoted downwards about the axis of rotation 7 into a removal position, the drink passes from the outlet opening 3 to the removal opening 22 and can thus be removed from the capacity 20 of the beverage container.
  • a freshness seal 23 can also be seen, which includes a button 24 and a connecting web 25 .
  • the button 24 is non-reversibly inserted into an associated receptacle (not shown) in the drain button 18 .
  • the piston 1 can be brought from the closed position into the working position only by destroying the connecting web 25, as a result of which an opening of the beverage container is easily recognizable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Closures For Containers (AREA)

Abstract

L'invention concerne un piston (1) pour robinet de soutirage destiné au soutirage d'une boisson d'un réservoir, de préférence de bière d'un fût, idéalement de bière d'un tonnelet de type de fête de 5 litres. Le piston (1) comprenant un canal d'écoulement interne (4), un orifice d'entrée (2) et un orifice de sortie (3), le canal d'écoulement interne (4) destiné à l'acheminement de la boisson de l'orifice d'entrée (3) à l'orifice de sortie (4) étant réalisé dans le piston, et le piston (1) présentant plusieurs entretoises (8, 8', 9) sur une face extérieure. Au moins une des entretoises (8, 8') est réalisée sous la forme d'une entretoise étagée (9), ladite au moins une entretoise étagée (9) présentant différentes premières zones (10) et au moins une deuxième zone (11) disposée entre des premières zones (10) adjacentes, les différentes premières zones (10) adjacentes étant conçues pour, lors de l'agencement du piston (1) dans une chambre à piston (14), venir en contact avec une paroi (15) de la chambre à piston (14), et l'au moins une deuxième zone (11) étant réalisée respectivement sous forme de retrait par rapport aux différentes premières zones (10).
EP21854742.0A 2021-01-18 2021-12-21 Piston, robinet de soutirage et réservoir de boissons Active EP4093697B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021200423.7A DE102021200423A1 (de) 2021-01-18 2021-01-18 Kolben, Zapfhahn und Behälter für Getränke
PCT/DE2021/200271 WO2022152346A1 (fr) 2021-01-18 2021-12-21 Piston, robinet de soutirage et réservoir de boissons

Publications (3)

Publication Number Publication Date
EP4093697A1 true EP4093697A1 (fr) 2022-11-30
EP4093697B1 EP4093697B1 (fr) 2024-02-07
EP4093697C0 EP4093697C0 (fr) 2024-02-07

Family

ID=80218344

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21854742.0A Active EP4093697B1 (fr) 2021-01-18 2021-12-21 Piston, robinet de soutirage et réservoir de boissons

Country Status (3)

Country Link
EP (1) EP4093697B1 (fr)
DE (1) DE102021200423A1 (fr)
WO (1) WO2022152346A1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19825929A1 (de) * 1997-12-13 1999-06-17 Huber Verpackungen Gmbh & Co Zapfhahn zur Entnahme von Fluid aus einem Behälter
DE29722034U1 (de) * 1997-12-13 1998-02-05 Huber Verpackungen GmbH + Co, 74613 Öhringen Behälter für Flüssigkeiten, insbesondere Getränke
DE10112451A1 (de) 2001-03-14 2002-09-19 Oberhofer Werkzeugbau Gmbh Nachtropffreier Zapfhahn
US6845786B1 (en) * 2004-04-07 2005-01-25 Heiner Ophardt Spigot valve
PL2384307T3 (pl) 2008-12-16 2013-11-29 Erwin Promoli Urządzenie dozujące
EP3418250A1 (fr) 2017-06-22 2018-12-26 OAM GmbH Fermeture pour un récipient de boisson

Also Published As

Publication number Publication date
EP4093697B1 (fr) 2024-02-07
DE102021200423A1 (de) 2022-07-21
WO2022152346A1 (fr) 2022-07-21
EP4093697C0 (fr) 2024-02-07

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