EP1037850B1 - Soupape de decharge pour recipient sous pression - Google Patents

Soupape de decharge pour recipient sous pression Download PDF

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Publication number
EP1037850B1
EP1037850B1 EP98943719A EP98943719A EP1037850B1 EP 1037850 B1 EP1037850 B1 EP 1037850B1 EP 98943719 A EP98943719 A EP 98943719A EP 98943719 A EP98943719 A EP 98943719A EP 1037850 B1 EP1037850 B1 EP 1037850B1
Authority
EP
European Patent Office
Prior art keywords
valve
ring
reinforcing ring
seat
distance
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
EP98943719A
Other languages
German (de)
English (en)
Other versions
EP1037850A1 (fr
Inventor
Bernt Ipsen
Morten N. Winther
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.)
Micro Matic AS
Original Assignee
Micro Matic AS
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 Micro Matic AS filed Critical Micro Matic AS
Publication of EP1037850A1 publication Critical patent/EP1037850A1/fr
Application granted granted Critical
Publication of EP1037850B1 publication Critical patent/EP1037850B1/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
    • B67D1/0829—Keg connection means
    • B67D1/0831—Keg connection means combined with valves
    • B67D1/0832—Keg connection means combined with valves with two valves disposed concentrically
    • 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
    • B67D1/0829—Keg connection means
    • B67D1/0841—Details
    • B67D1/0845—Security means
    • 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
    • B67D1/125—Safety means, e.g. over-pressure valves

Definitions

  • the invention relates to a valve for a pressure container for distributing a liquid, e.g. beer, under pressure of a gas, e.g. CO 2 , and of the kind which comprises a valve seat defining a valve axis, an elastomeric valve ring placed coaxially to the valve seat with a preferably coaxially embedded reinforcing ring of e.g. metal, a gas passage which is formed between the valve ring seat and the valve ring when opening the valve, and a liquid passage which is formed at the same time through the central opening of the valve ring.
  • a gas e.g. CO 2
  • Transportable pressure containers are used for distributing beverages, such as beer, to be served in portions in e.g. a restaurant.
  • a container When the container is to be used, its valve is mounted with a coupling head with connections for a pressure bottle or cartridge containing a pressure gas, normally CO 2 , and a barrel tap for drawing the beverage.
  • a pressure gas normally CO 2
  • a barrel tap for drawing the beverage.
  • the coupling head In the coupling head is a spindle for opening the valve by displacement with a grip.
  • valve rings are therefore made of elastomeric materials, such as rubber which can be elastically deformed to abut tightly at the gas passage and the liquid passage, respectively, by the load of at least one compression spring.
  • a safe sealing presupposes that the valve ring is acted upon by relatively great forces which the elastomeric material itself hardly can absorb without the ring being buckled, whereby the gas and/or liquid passage will be liable to leak, and the valve ring can be forced out of its position in the valve.
  • the elastomeric material of said conventional valve ring is therefore stiffened by a plate-shaped reinforcing ring of a strong, solid material, for example stainless steel.
  • a binding agent is applied to the ring at the manufacturing and it is cast together with the elastomeric material to an integrated unit.
  • the transportable pressure containers are normally without any danger to the surroundings.
  • the working pressure is only a few bars, and the containers are dimensioned with a large safety margin in relation to this pressure.
  • the pressure in the container might get so high, that the container will explode whereby persons, who might be nearby, could be hit and seriously injured.
  • the conventional valves have a structure implying that the valves, without being dismounted, can be cleaned effectively and safely in the same process as the rest of the container.
  • the construction implies, at the same time, that a rising pressure will close the valve tighter.
  • the object of the invention is to provide a valve of the kind mentioned in the opening paragraph that has all the advantages of the conventional valves, and is just as easy to clean optimally, and is furthermore constructed to ensure the container from bursting due to a much too high overpressure.
  • the outer periphery of the reinforcing ring defines a curve with at least one first section placed at a greater distance from the valve axis than the inner periphery of the valve-ring seat, and at least one second section placed at a smaller distance.
  • the valve according to the invention functions as a very efficient relief valve.
  • the distance between the valve axis and the first section of the periphery curve can be between 0.9 and 1.2 and preferably between 1.0 and 1.1 times the distance between the valve axis and the inner periphery of the valve seat while the distance between the valve axis and the second section can be between 0.75 and 0.95 and preferably between 0.8 and 0.9 times the distance between the valve axis and the inner periphery of the valve seat.
  • the first section of the curve which is defined by the outer periphery of the reinforcing ring can run along a circle and the second section can define a curved recess in the circular outer periphery.
  • each of these recesses must span a sufficiently great area, and at the same time the material thickness of the reinforcing ring must not be too thick. It has turned out that the valve ring functions efficiently as relief valve when the greatest breadth of each recess is at least twice as broad as the thickness of the reinforcing ring.
  • the effect is promoted when the recess furthermore is provided with sharp edges as the elastomeric material is cut completely or partly through along these edges.
  • the reinforcing ring can advantageously be shaped as a plate with a bottom and an annular rim. Having this double curved design, the ring is given a great section modulus against axial load so that the ring preliminary is able to force the elastomeric material out through the opening in the valve seat under the action of the overpressure in the container.
  • the annular rim of the reinforcing ring can advantageously be fitted into this collar at a short distance of preferably less than 2 mm from the collar side opposite of the side facing the valve seat so that the elastomeric material in and at each recess attains a thickness so thin and thereby a small section modulus that the material can be deformed to a sufficient extent under the action of the preselected overpressure.
  • Transportable containers are used for distributing beverages, such as beer, cola, soft drinks, and wine, under pressure of CO 2 .
  • beverages such as beer, cola, soft drinks, and wine
  • the containers can also be used for many other liquids, just as the gas can be another than CO 2 .
  • the containers do not have to be transportable, but can just as well be stationary.
  • valve can be designed as shown, but such valves also have many other designs.
  • the embodiment shown in fig. 1 is therefore only used in the below description to exemplify the invention, and as the structure is known per se, it will only be described in broad outline.
  • the valve consists mainly of a valve body 5 screwed into a connection piece 3 on a pressure container 4, and a riser pipe 6, only fragmentarily shown, which is displaceably fitted in the body.
  • the left side of the figure shows the valve in open position, while the right side shows the valve in closed position.
  • an elastomeric valve ring 2 for opening and closing the valve is placed concentrically to the valve seat 8 in the valve. This valve ring is shown on a larger scale in fig. 2.
  • valve When the valve is open, as shown in the left side of the figure, there is a gas passage 7 between a valve seat 8 in the valve body 5 and a contact face 9 on the valve ring 2. There is furthermore a liquid passage 10 between a valve plug 11 and a valve-ring seat 12 in the central opening 13 of the valve ring.
  • the riser pipe 6 When the valve is to be closed, as shown in the right side of the figure, the riser pipe 6 is displaced with the valve ring 2 by a first compression spring 14 until the contact face 9 of the valve ring abuts on the valve seat 8. Thereby, the gas passage 7 is closed.
  • the valve plug 11 is displaced by a second compression spring 15 to abut on the valve-ring seat 12 so that the liquid passage 10 is also closed.
  • valve 1 When the container 4 is to be used, its valve 1 is detachably mounted with a coupling head (not shown) with a displaceable, tubular spindle 16, of which the bottom part is seen in fig. 1.
  • the spindle treads with its bottom part on the valve plug 11 and the valve ring 2, which both are removed from their seats 8; 12, so that the valve is opened when the spindle is displaced downwards in the figure by operating a grip (not shown) on the coupling head.
  • the gas is supplied to the valve and the container via the coupling head which, in operation, is connected with a pressure bottle or cartridge containing pressure gas (not shown).
  • the liquid is led out via the valve and the tubular spindle 16 of the coupling head, said spindle is connected with a barrel tap at the place of drawing (not shown).
  • a first reinforcing ring 17 of e.g. stainless steel is, after having been surface treated with a binding agent, concentrically embedded in the elastomeric material, e.g. vulcanised rubber, of the valve ring 2.
  • a second reinforcing ring 18 of e.g. stainless steel is fitted onto the valve ring 2 partly by being clamped around the elastomeric material of this ring, and partly by being beaded around the inner rim area 19 of the first reinforcing ring 17.
  • the two reinforcing rings 17 and 18 serve for reinforcing the valve ring 2 and absorbing the stress from the spindle 16 of the coupling head when the valve is opened.
  • the first reinforcing ring 17 is shaped as a plate with a bottom 20 and an annular rim 21 extending into a collar 22 on the valve ring 2 at a short distance from the underside of the collar.
  • Fig. 3 shows this reinforcing ring 17 seen from below.
  • a number of transverse openings 23 are made in the ring for creating a break-joint between the parts of the elastomeric material of the valve ring that are on the two sides of the reinforcing ring 17.
  • the rim 21 of the reinforcing ring 17 is divided into three sectors of a circle 24 having a larger diameter than the opening 25 of the valve seat 8.
  • the circle sectors 24 are again separated by three curved recesses 26.
  • each of these curved recesses 26 are at a shorter distance from the valve axis 27 than the edge 28 of the opening 25 in the valve seat 8.
  • Fig. 4 and 5 are on a larger scale fractional, cross-sectional views of the valve ring 2 in a situation where it is loaded by an overpressure higher than the permissible.
  • the overpressure has forced the main part of the elastomeric collar 22 of the valve ring out through the opening 25 in the valve seat 8 until the circle sectors 24 of the valve ring abut on the underside of the valve seat 8.
  • the bottom 20 of the valve ring is also shot up through the opening 25 of the valve seat while its rim is stopped by the valve seat so that the valve ring now has the shape shown in fig. 4.
  • the material will therefore yield in the recesses 26 under a stress combined by the overpressure in the container and the tension that is generated between the rim of the valve ring and the elastomeric material over the valve seat. Furthermore, the edges of the recesses are sharp and they will therefore at the same time try to cut partly or completely through the elastomeric material in the recesses.
  • the result of the above mentioned processes is that the elastomeric material in the recesses is deformed so that openings 29 are made at the recesses through which the gas can flow in the direction indicated by the arrow. Thereby, the overpressure in the container is relieved.
  • the valve according to the invention thereby functions as a very efficient relief valve.
  • valve ring 2 had a second reinforcing ring 18 besides the first reinforcing ring 17, this ring 18 was merely clamped onto the elastomeric part of the valve ring.
  • this ring 18 was merely clamped onto the elastomeric part of the valve ring.
  • valve as relief valve do not depend on the presence of the second reinforcing ring 18, and that other embodiments of the valve ring 2 without this reinforcing ring are possible within the scope of the invention.
  • the embodiment of the reinforcing ring 17 as described and shown only serves as an example for illustrating the invention.
  • the outer periphery of the ring can thus be designed in many other ways.

Landscapes

  • Devices For Dispensing Beverages (AREA)
  • Safety Valves (AREA)

Claims (10)

  1. Soupape (1) destinée à un récipient sous pression (4) pour la distribution d'un liquide, tel que de la bière, sous la pression d'un gaz, tel que du CO2, et du type qui comprend un siège de soupape (8) définissant un axe de soupape (27), une bague de soupape en élastomère (2) placée coaxialement par rapport au siège de soupape avec une bague de renforcement (17) par exemple en métal montée de préférence coaxialement, un passage de gaz (7) qui est formé entre le siège de soupape et de bague (8) et la bague de soupape (2) lors de l'ouverture de la soupape (1), et un passage de liquide (10) qui est formé en même temps à travers l'ouverture centrale (13) de la bague de soupape, caractérisée en ce que la périphérie extérieure de la bague de renforcement (17) définit une courbe ayant au moins une première section à une distance plus grande de l'axe de soupape (27) que la périphérie intérieure du siège de soupape et de bague, et au moins une seconde section à une distance plus petite.
  2. Soupape (1) selon la revendication 1, caractérisée en ce que la distance entre l'axe de soupape (27) et la au moins une première section de la courbe définie par la périphérie extérieure de la bague de renforcement (17) est entre 0,9 et 1,2 et de préférence entre 1,0 et 1,1 fois égale à la distance entre l'axe de soupape (27) et la périphérie intérieure du siège de soupape (8).
  3. Soupape (1) selon la revendication 1 ou 2, caractérisée en ce que la distance entre l'axe de soupape (27) et la au moins une seconde section de la courbe définie par la périphérie extérieure de la bague de renforcement (17) est entre 0,75 et 0,95 et de préférence entre 0,8 et 0,9 fois égale à la distance entre l'axe de soupape (27) et la périphérie intérieure du siège de soupape (8).
  4. Soupape (1) selon la revendication 1, 2, ou 3, caractérisée en ce que la au moins une première section de la courbe définie par la périphérie extérieure de la bague de renforcement (17) tourne autour d'un cercle, et en ce que la au moins une seconde section définit une encoche (26) dans la périphérie circulaire extérieure.
  5. Soupape (1) selon la revendication 4, caractérisée en que la largeur la plus grande de la au moins une encoche (26) est au moins deux fois égale à l'épaisseur de la bague de renforcement (17).
  6. Soupape (1) selon la revendication 4 ou 5, caractérisée en ce que la au moins une encoche (26) est incurvée.
  7. Soupape (1) selon chacune des revendications 4, 5, ou 6, caractérisée en ce l'un au moins une encoche (26) possède des bords tranchants (29).
  8. Soupape (1) selon chacune des revendications 1 à 7, caractérisée en ce que la bague de renforcement (17) est en forme de plaque ayant une partie inférieure (20) et un rebord annulaire (21).
  9. Soupape (1) selon la revendication 8, et dans laquelle la bague de soupape (2) possède un collier (22) faisant face au siège de soupape (8), caractérisée en ce que le rebord annulaire (21) de la bague de renforcement (17) est mis en place dans le collier (22) de la bague de soupape (2) à une courte distance du côté collier opposé au côté faisant face au siège de soupape (8).
  10. Soupape (1) selon la revendication 8 ou 9, caractérisée en ce le rebord annulaire (21) de la bague de renforcement en forme de plaque (17) est mis en place dans le collier (22) à une distance de moins de 2 mm du côté collier opposé au côté faisant face au siège de soupape (8).
EP98943719A 1997-09-18 1998-09-17 Soupape de decharge pour recipient sous pression Expired - Lifetime EP1037850B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DK107697 1997-09-18
DK107697 1997-09-18
PCT/DK1998/000402 WO1999014156A1 (fr) 1997-09-18 1998-09-17 Soupape de decharge pour recipient sous pression

Publications (2)

Publication Number Publication Date
EP1037850A1 EP1037850A1 (fr) 2000-09-27
EP1037850B1 true EP1037850B1 (fr) 2002-04-10

Family

ID=8100735

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98943719A Expired - Lifetime EP1037850B1 (fr) 1997-09-18 1998-09-17 Soupape de decharge pour recipient sous pression

Country Status (6)

Country Link
EP (1) EP1037850B1 (fr)
JP (1) JP2001516684A (fr)
CN (1) CN1103319C (fr)
AU (1) AU9153598A (fr)
DE (1) DE69804852D1 (fr)
WO (1) WO1999014156A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10815114B2 (en) 2016-12-27 2020-10-27 Midnight Madness Distilling, Llc Effervescent liquid dispenser
US11111125B2 (en) 2017-07-25 2021-09-07 Midnight Madness Distilling, Llc Effervescent liquid dispenser

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007023748A1 (fr) * 2005-08-22 2007-03-01 Fuji Techno Co., Ltd. Raccord pour conteneur de boisson
JP4693161B2 (ja) * 2005-08-22 2011-06-01 フジテクノ株式会社 飲料容器用フィッティング
DE102008053716B4 (de) * 2008-10-29 2012-09-27 Khs Gmbh Behälter, insbesondere großvolumiger Einwegbehälter aus Kunststoff wie beispielweise Keg zur Aufnahme von Getränken
JP5099729B2 (ja) * 2011-01-31 2012-12-19 フジテクノ株式会社 飲料容器用フィッティング
EP2826745A1 (fr) * 2013-07-19 2015-01-21 Micro Matic A/S Valve de surpression d'une vanne d'un tube extracteur
DE102015113387B4 (de) 2015-08-13 2018-10-04 Dsi Getränkearmaturen Gmbh Fitting für Getränkefass mit Überdruckfunktion
RU2640988C1 (ru) * 2016-09-22 2018-01-12 Общество с ограниченной ответственностью "Казанский завод "ЕВРОПЛАСТ" Клапанная конструкция для пэт кега
GB2578882A (en) * 2018-11-09 2020-06-03 Polykeg S R L Bag-in-keg container with low pressure PRV

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE648702A (fr) * 1963-05-31
US4142658A (en) * 1976-08-20 1979-03-06 Gkn Sankey Limited Closure unit for beer kegs
WO1988001249A1 (fr) * 1986-08-11 1988-02-25 Apv Burnett & Rolfe, Inc. Soupape avec clapet d'air de securite
JP4082715B2 (ja) * 1996-12-17 2008-04-30 ミクロ マティック アー／エス 二重弁のための弁リング

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10815114B2 (en) 2016-12-27 2020-10-27 Midnight Madness Distilling, Llc Effervescent liquid dispenser
US11111125B2 (en) 2017-07-25 2021-09-07 Midnight Madness Distilling, Llc Effervescent liquid dispenser

Also Published As

Publication number Publication date
DE69804852D1 (de) 2002-05-16
EP1037850A1 (fr) 2000-09-27
AU9153598A (en) 1999-04-05
CN1103319C (zh) 2003-03-19
WO1999014156A1 (fr) 1999-03-25
CN1270569A (zh) 2000-10-18
JP2001516684A (ja) 2001-10-02

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