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EP1573139A2 - Robinet sanitaire a limitation de debit et regulation de la formation de mousse - Google Patents

Robinet sanitaire a limitation de debit et regulation de la formation de mousse

Info

Publication number
EP1573139A2
EP1573139A2 EP03768899A EP03768899A EP1573139A2 EP 1573139 A2 EP1573139 A2 EP 1573139A2 EP 03768899 A EP03768899 A EP 03768899A EP 03768899 A EP03768899 A EP 03768899A EP 1573139 A2 EP1573139 A2 EP 1573139A2
Authority
EP
European Patent Office
Prior art keywords
assembly
fluid
valve body
plunger
faucet
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.)
Withdrawn
Application number
EP03768899A
Other languages
German (de)
English (en)
Inventor
Richard Pfieffer
Karl Krumbiegel
John Strobel
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.)
Perlick Corp
Original Assignee
Perlick Corp
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 Perlick Corp filed Critical Perlick Corp
Publication of EP1573139A2 publication Critical patent/EP1573139A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
    • 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
    • B67D1/14—Reducing valves or control taps
    • B67D1/1405—Control taps
    • B67D1/1411—Means for controlling the build-up of foam in the container to be filled
    • 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
    • B67D1/14—Reducing valves or control taps
    • B67D1/1405—Control taps
    • B67D1/145—Control taps comprising a valve shutter movable in a direction perpendicular to the valve seat
    • B67D1/1455—Control taps comprising a valve shutter movable in a direction perpendicular to the valve seat the valve shutter being opened in the same direction as the liquid flow
    • B67D1/1461—Control taps comprising a valve shutter movable in a direction perpendicular to the valve seat the valve shutter being opened in the same direction as the liquid flow the valve shutter being integral with a compensator

Definitions

  • the present invention relates to faucets for use with beer tappers and other pressurized dispensers and, more particularly, relates to a sanitary flow control faucet configured to dispense materials in a regulated manner with a foam control feature.
  • Dispensing faucets are used in a variety of applications in which materials are dispensed from pressurized containers or other pressurized sources. Dispensing faucets of this type are widely used in beverage dispensing applications in which beer, soda, or another beverage is dispensed from a pressurized container such as a keg. They are also sometimes used to dispense condiments such as relish or mustard from containers under pressure. Indeed, the applications are many and may vary widely.
  • a typical prior art faucet includes a valve operated by a pivotable lever.
  • a valve element is mounted on a plunger that is slidable longitudinally through a bore.
  • the lever When the lever is pivoted forwardly, towards the user, to open the valve element, the valve element moves rearwardly through the bore, thereby permitting dispensed materials to flow from the inlet of the valve to the outlet.
  • the entire valve is exposed to flowing fluid during dispensation, but when the valve is not dispensing, major portions of wet valve elements are exposed to air.
  • Standing fluid in the valve and exposure of the wet valve elements to air can give rise to undesirable bacterial growth within the valve.
  • Foaming is produced in the process of dispensing certain pressurized fluids through these faucets. Foaming however, occasionally alters the taste and appearance of certain fluids, such as beers. Further, foaming may not be desirable when the fluid is being dispensed, but may be desirable when the fluid needs to be to topped off in a container, such as a mug. Therefore, the need has arisen to improve the design of a faucet to introduce controlled foaming in dispensed fluid, while not exposing the wet portions of the faucet to bacterial growth.
  • Dispensable fluids for example beers
  • many kegs that are put under pressure when filled with draft beer are stored in rooms with frequent temperature changes. Variation in temperature results in variation in pressure inside these kegs.
  • certain prior art dispensing faucets have compensator units. These compensator units, however, have limited control over balancing and regulating pressurized dispensing fluids. Uncontrolled or poorly controlled pressure exerted by these fluids ultimately leads to greater wear and tear of the faucet equipment.
  • the present invention provides a sanitary dispensing faucet with a number of advantages.
  • One advantage of the present invention is that the interior of the valve does not contain substantial amounts of air under normal usage, thereby limiting bacterial growth inside the faucet.
  • Another advantage of one embodiment of the present invention is a push- back foam feature, such that controlled foam may be created, when required or as desirable.
  • Another advantage of the present invention is a flow restrictor with a flow adjustment screw such that the pressure created by the contained fluid may be graduated and regulated at numerous levels.
  • valve elements may be cleaned efficiently without significant disassembly of the valve.
  • the sanitary faucet includes (a) a valve body having a valve bore that has axially aligned inlet and outlet ports; (b) a plunger assembly substantially disposed in the valve body between the inlet and outlet ports; (c) a flow restrictor assembly; and (d) an adjusting screw assembly.
  • the flow restrictor assembly includes a shank that has a first and second shank end. The first shank end is removably attached to the inlet port of the valve body, while the second shank end is removably attached to a source of the dispensing fluid.
  • the flow restrictor assembly further includes a flow restrictor member movably disposed within the shank.
  • the flow restrictor has a funnel head that communicates with the plunger assembly, and a fluted tail having at least one groove or channel for permitting flow of inflowing dispensing fluids from the source.
  • the adjusting screw assembly regulates movement of the flow restrictor assembly within the shank.
  • Another aspect of the present invention includes a method for reducing foam from a dispensing liquid.
  • the method is practiced by first attaching a source of the dispensing fluid to the inlet port of the valve body.
  • the adjusting screw assembly is then rotated so as to move the flow restrictor such that the fluid entering the valve body has a desired level of pressure. Fluid at a desired pressure is then permitted to enter the plunger assembly.
  • the handle assembly is moved to open and close the valve as desired. When the handle assembly is moved forwardly, the plunger assembly in turn is moved rearwardly.
  • This movement opens the valve by opening a passage for the fluid that flows through at least one groove or channel of the fluted tail, over the funnel head, around the plunger assembly, towards the outlet port and out of a spout attached to the outlet port.
  • Fluid dispensed by use of this method has a closely controlled pressure, and therefore results in the fluid being dispensed substantially without foam.
  • Another embodiment of the method aspect of present invention provides a method for creating foam from a dispensing liquid that has the capability of forming foam, such as beer.
  • a source of the dispensing fluid is attached to the inlet port of the valve body. Fluid is permitted to enter the faucet at a desired pressure.
  • the handle assembly is then moved rearwardly, which results in the plunger assembly being moved forwardly, which results in the larger passage for the fluid being closed.
  • the handle assembly is then moved even further rearwardly against the force of a spring, which has the effect of exposing a transverse hole in a retaining screw beyond the valve seat.
  • the beer being forced through a small opening, becomes foamy.
  • FIG. 1 is an exploded perspective view of a faucet constructed according to one embodiment of the invention, depicting a flow restrictor with a flow adjustment screw and push-back foam feature.
  • FIG. 2 is a sectional view of the valve body of the faucet shown in FIG.1.
  • FIG. 3(a) is a plan sectional view of the faucet shown in FIG. 1 showing a flow adjustment screw in a certain position, and a push back foam feature in an activated position.
  • FIG. 3(b) is a plan sectional view of the faucet shown in FIG. 1 showing the flow adjustment screw in a different position than FIG. 3(a) and the faucet in its closed position.
  • FIG. 4(a) is a sectional view of the faucet shown in FIG. 1, showing the faucet shown in FIG. 1 in its foam generating mode
  • FIG. 4(b) is a sectional view of the faucet shown in FIG. 1 showingthe faucet in a closed position.
  • FIG. 4(c) is a sectional view of the faucet shown in FIG. 1, shown in an open position.
  • a dispensing faucet is provided that is usable in any system in which a faucet is selectively operated to dispense materials from a pressurized source. For instance, it is applicable to "tapper" faucets configured to dispense beer or another pressurized liquid from a keg or another pressurized container. It is also applicable to condiment faucets configured to dispense ketchup, mustard or relish from a container. For the purposes of describing this invention, both non- viscous and viscous materials, such as beer and hot dog relish, shall be considered fluids or liquids.
  • the faucet comprises a valve body and a plunger which is mounted in a bore in the valve body for reciprocating movement therein.
  • the bore has an inlet port that opens into a passage adapted for connection to a pressurized container or other source of pressurized fluid, and an outlet port that opens into a dispensing spout adapted to deliver the fluid from the faucet.
  • a handle having a pivotable lever is disposed partially within the valve body and terminates within a socket provided for that purpose in the plunger. The lever thus engages the plunger to drive the plunger to reciprocate longitudinally through the bore.
  • a plug on the plunger interacts with a valve seat inside the valve body to control the flow of fluid through the valve.
  • a faucet 10 constructed in accordance with a first embodiment of the invention includes a valve body 12 having a bore 14 within it, a spout 16 that is mounted on the valve body 12, and a handle 18 that is operable by an operator to move a plunger 20 within the bore 14 to open the faucet 10 and dispense fluids through the spout 16.
  • the valve body 12 may be formed from any material capable of withstanding the pressures involved, slidably receiving the plunger assembly 20 and pivotably supporting the handle 18. It preferably is formed from stainless steel, a food- grade plastic or another moldable material.
  • the bore 14, which is most preferably circular in cross-section, is formed axially through the valve body.
  • an inlet port 22 comprises the upstream axial end of the bore 14 for connecting the faucet 10 to a pressurized fluid container (not shown).
  • An outlet port 24 comprises the opposite end of the bore 14 for delivering dispensed fluid to the spout 16.
  • a valve seat 26 is located at a reduced-diameter portion of the bore 14 located adjacent or at the outlet port 24.
  • a bonnet bore 28 extends radially from the bore 14, through a boss 30 on the upper surface of the valve body 12, and to the outer surface of the valve body 12 for receiving the handle 18.
  • the lower end of the handle 18 forms a pivotable lever 32 that includes a partial ball 34 which engages a corresponding socket 36 of the plunger assembly 20.
  • the lever 32 is pivotably mounted in the bonnet bore 28 by a pivot mount, preferably formed from a second ball 38 and a bonnet socket 40. Both balls 34 and 38 are preferably molded integrally with the lever 32.
  • the plunger socket 36 preferably is formed of a slot in the plunger 20.
  • the bonnet socket 40 is formed from a bonnet washer 42, an upper bearing cup 44, a lower bearing cup 46, and at least one O-ring 48.
  • the plunger assembly 20 includes a plunger member 60, slidably mounted in the bore 14.
  • the plunger member 60 is formed generally in the shape of a geometric solid, of a cross-sectional shape different than the cross-section of the bore 14, so that the differences in cross-section create openings for permitting the passage of the fluid.
  • the plunger member 60 includes an outer peripheral surface 54 and upstream and downstream axial ends 56, 58.
  • the above-described slot or socket 36 extends radially into the plunger 20 between the ends 56 and 58.
  • the entire plunger 20 is arranged within the bore 14 such that nearly the entire plunger 20 is always immersed in the liquid being dispensed, even when the faucet 10 is not in use. This is advantageous because no part located within the bore 14 is exposed to the air outside the faucet when constantly surrounded by fluid and enclosed within the valve body 12.
  • the plunger assembly 20 of this embodiment is contemplated for use with non-viscous fluid, such as beer or another beverage.
  • the plunger assembly 20 is therefore configured to facilitate fluid flow through and past the plunger assembly and the interconnection between the plunger member 60 and the lever 32 so that the plunger assembly is washed clean of any particulate matter during dispensing.
  • the plunger member 60 is formed with a substantially square cross-section, creating four gaps between itself and the circular-shaped inside cross-section of the bore 14. These gaps act as four channels of passage for the fluid to flow. Other shapes may also be used for both of these elements, so long as sufficiently substantial channels of passage are still formed thereby.
  • One embodiment of the present invention includes an assembly to provide a foam control feature, for use with a beer dispensing faucet in those instances where foam is desirable.
  • the foam control feature provides only foam, in such instances as where the user has dispensed nearly a full beer, without raising much foam, and wants to provide an attractive head to a glass of beer.
  • the plunger 20 is constructed of a valve stem 60 with a recoiling system that comprises a seal 62, a seal retainer screw 64 which passes through the seal, a spring cup 66 and a coil spring 68.
  • the seal retainer screw 64 is threaded into an axial boss 70 at the end of the valve stem that faces toward the valve seat 26 inside the valve body 12.
  • the boss 70 includes an axial hole 71 formed therein, which aligns with an axial hole 64a formed in retainer screw 64.
  • the axial hole 64a enters the retainer screw 64 at the threaded end, but dead ends just before the head of the retainer screw 64.
  • a transverse hole 64b is formed just under the head of the retainer screw 64, to intersect with the axial hole 64a and provide an exit from the axial hole.
  • the retainer screw 64 and the seal 62 function as the valve closure.
  • the seal 62 is mounted on the downstream end portion of the plunger member 60 for sealing against the valve seat 26 on the valve body 12 when the plunger member is in the non-dispensing, valve-closed position.
  • the seal 62 is a deformable elastomeric O-ring (on the order of 70-90 durometer) sized so as to matingly fit with the valve seat 26.
  • the retainer screw 64 and the seal 62 may be manufactured from any food grade material.
  • the retainer screw 64 is made of stainless steel and the seal is made from any food grade polymer.
  • the recoiling system of the plunger is effected when the seal 62 and the retainer screw 64 are inserted into the axial boss 70 as described above, through the spring cup 66 and coil spring 68.
  • the spring 68 is fitted such that it is capable of compression and expansion between the spring cup 66 and the downstream valve stem end 58. As shown in FIG.
  • Each of the holes 71, 64a and 64b have diameters of a size to create smooth foam for the particular beer being dispensed, hi the experience of the inventors, diameters on the order of about 0.005 inches to about .09 inches provide the best functionality, but other diameters are also functional.
  • the spout 16 is removably mounted on the downstream end of the valve body 12, preferably by being threaded onto a threaded boss 76 extending downstream from the downstream end of the valve body 12.
  • the spout 16 is sealed against the valve body 12 by an O-ring 78, which is mounted in a groove 80 on the upstream axial end of the spout 16.
  • the faucet 10 further includes a flow control mechanism, to closely control the flow of the dispensed fluid.
  • the flow control mechanism includes a flow control shank 82, having formed therein a shank bore 84, which is capable of being connected to a pressurized fluid container (not shown) via a boss 85.
  • the boss 85 is connected to the pressurized container via a threaded connection.
  • the interior of the bore 82 is essentially funnel-shaped and is designed to substantially fit a flow restrictor 86, which has a narrow solid funnel head 88 and a solid fluted tail 90.
  • the shank 82 and the flow restrictor 86 are both preferably made of stainless steel.
  • the head 88 of the flow restrictor 86 further comprises at least one orifice 92 providing an opening through the solid funnel head 88 and leading into a central chamber 94 of the funnel head 88. It is preferred that head 88 further comprises at least four equally spaced orifices 92, all in fluid communication with the central chamber 94.
  • the shank 82 containing the flow restrictor 86 is positioned relative to the bore 14 in the upstream end of the inlet port 22 with the aid of a keeper spring 96, a keeper ring 102 and a ferrule 100.
  • the ferrule 100 is preferably connected to the inlet port 22 by any suitable removable connection such as threading, thereby trapping the head of the flow restrictor 86 inside the valve body 12.
  • the inlet valve 22 further comprises an angled bore 105 for receiving a flow adjusting screw 106.
  • the bore 105 is positioned, and the screw 106 sized, so that the end of the screw may contact the head of the flow restrictor 86. In this manner, rotation of the flow adjustment screw 106 controls the amount of axial displacement of the flow restrictor 86 to a very fine degree of adjustment, providing very closely regulated flow control.
  • the adjusting screw 106 may be of a conventional type with a knurled head, or, alternatively, may be provided with a tamper resistant flow adjustment screw head 108 and an adjusting key 112, which are axially fitted with each other.
  • An O- ring 110 may also be provided to reduce leakage around the adjusting screw 106.
  • the screw end 108 and the adjusting key are made from stainless steel and the O-ring is made from elastomeric material.
  • the angled bore 105 on the inlet valve 22 is positioned at a slanting angle, preferably 45° to the inlet valve.
  • the flow restrictor 86 when the shank 82 containing the flow restrictor 86 is coupled with the inlet valve 22, then the flow restrictor 86 is positioned such that it may partially slide inside the bore 14 in the valve.
  • the adjusting key 112 As the adjusting key 112 is rotated, the adjusting screw 106 enters further inside the bore 14 of the inlet valve 22 via the angled bore 105.
  • the screw 106 constricts the movement of the flow restrictor 86 inside the bore 14.
  • the adjusting screw 106 is gradually rotated clockwise, as shown in FIG. 3(a), the movement of the flow restrictor 86 is gradually constricted.
  • the adjusting screw 106 is capable of at least 360-degree rotation, thereby allowing for very finely controlled movement of the flow restrictor 86.
  • the adjustment screw 106 When the pressurized fluid coming from upstream into the inlet port 22 has higher than desirable pressure, the adjustment screw 106 is rotated clockwise to constrict the movement of the flow restrictor 86, which in turn restricts the fluid flow. On the other hand, if the pressure of the fluid is lower than desirable, then more fluid can be allowed to flow through the faucet 10 by simply gradually turning the adjustment screw 106 counter-clockwise to effect a desirable pressure-flow of the fluid, as shown in FIG. 3(b).
  • the fluid will enter the shank 82, will pass along the fluted tail 90, will enter the central chamber 94 of the head 88 via the orifices 92 and then will pass through bore 14 into the channels of passage surrounding the plunger assembly 20.
  • the valve 10 would open and fluid of desirable pressure and clarity will be dispensed, as shown in FIG. 4(c). If the plunger assembly 20 is a non-dispensing position, the fluid would fill the bore 14, and the plunger assembly, including its parts as described above, will be immersed in the fluid without any exposure to air or bacterial growth, as shown in FIG 4(b).
  • the fluid entering the shank 82 may be forced through the plunger assembly 20 in a partially open foam-making position.
  • Positioning the handle 18 in a push back foam generating mode creates foam to top off fluids, such as beer with a head.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Dispensing Beverages (AREA)
  • Domestic Plumbing Installations (AREA)
  • Lift Valve (AREA)

Abstract

L'invention concerne un robinet sanitaire à régulation de la mousse, pouvant être adapté pour distribuer des fluides sous pression. Ledit robinet sanitaire comprend un corps de vanne, un système de piston plongeur, un système de limitation de débit et un système de vis de réglage. L'invention concerne en outre un procédé de régulation variable de la pression d'écoulement fluidique et de la formation de mousse dans le robinet sanitaire.
EP03768899A 2002-11-12 2003-11-12 Robinet sanitaire a limitation de debit et regulation de la formation de mousse Withdrawn EP1573139A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US42552802P 2002-11-12 2002-11-12
US425528P 2002-11-12
PCT/US2003/036036 WO2004044339A2 (fr) 2002-11-12 2003-11-12 Robinet sanitaire a limitation de debit et regulation de la formation de mousse

Publications (1)

Publication Number Publication Date
EP1573139A2 true EP1573139A2 (fr) 2005-09-14

Family

ID=32313005

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03768899A Withdrawn EP1573139A2 (fr) 2002-11-12 2003-11-12 Robinet sanitaire a limitation de debit et regulation de la formation de mousse

Country Status (10)

Country Link
EP (1) EP1573139A2 (fr)
JP (1) JP2006513099A (fr)
CN (1) CN1781000A (fr)
AU (1) AU2003291496A1 (fr)
BR (1) BR0316188A (fr)
CA (1) CA2505660A1 (fr)
EA (1) EA007751B1 (fr)
MX (1) MXPA05004829A (fr)
WO (1) WO2004044339A2 (fr)
ZA (1) ZA200503103B (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7311224B2 (en) 2004-11-09 2007-12-25 Ecolab Inc. Chemical dispense system for cleaning components of a fluid dispensing system
GB2524841B (en) * 2014-04-04 2016-09-07 Browne-Wilkinson Oliver Drinking liquid dispensing device
DE102014105554A1 (de) * 2014-04-17 2015-10-22 Cmb Schankanlagen Gmbh Kompensatorzapfhahn
JP2016078858A (ja) * 2014-10-10 2016-05-16 サントリーホールディングス株式会社 泡コック
CN105135024B (zh) * 2015-08-11 2018-07-06 塔罗斯控股有限公司 一种龙头
US10589978B2 (en) 2017-10-13 2020-03-17 Cornelius, Inc. Beverage dispensers with dual flow dispensing valves
CN111017857B (zh) * 2020-02-20 2024-11-22 宁波凯歌斯不锈钢制品有限公司 一种不锈钢啤酒罐
CN111734836B (zh) * 2020-07-20 2025-02-14 宁波鲜啤三十公里科技有限公司 一种啤酒机出酒阀
WO2023000035A1 (fr) * 2021-07-21 2023-01-26 Keg X Holdings Pty Ltd Robinet de régulation d'écoulement pour un système de distribution de boisson

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899170A (en) * 1959-08-11 Liquid dispensing apparatus
US2575658A (en) * 1947-11-21 1951-11-20 Nero Roger Del Beer faucet
US3291441A (en) * 1964-05-21 1966-12-13 Hansen Mfg Co Dispensing device
US3359996A (en) * 1965-07-19 1967-12-26 Cornelius Co Post-mix valve
NL7601131A (nl) * 1975-03-07 1976-09-09 Cornelius App Tapkraan.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004044339A3 *

Also Published As

Publication number Publication date
AU2003291496A1 (en) 2004-06-03
WO2004044339A2 (fr) 2004-05-27
EA007751B1 (ru) 2006-12-29
ZA200503103B (en) 2007-12-27
WO2004044339A3 (fr) 2005-12-15
CN1781000A (zh) 2006-05-31
CA2505660A1 (fr) 2004-05-27
EA200500575A1 (ru) 2006-06-30
MXPA05004829A (es) 2005-08-18
BR0316188A (pt) 2005-09-27
JP2006513099A (ja) 2006-04-20

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