EP0890146A1 - Vanne anti-reflux lineaire - Google Patents

Vanne anti-reflux lineaire

Info

Publication number
EP0890146A1
EP0890146A1 EP96945455A EP96945455A EP0890146A1 EP 0890146 A1 EP0890146 A1 EP 0890146A1 EP 96945455 A EP96945455 A EP 96945455A EP 96945455 A EP96945455 A EP 96945455A EP 0890146 A1 EP0890146 A1 EP 0890146A1
Authority
EP
European Patent Office
Prior art keywords
valve
vacuum
channel
inlet
outlet
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Withdrawn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
EP96945455A
Other languages
German (de)
English (en)
Other versions
EP0890146A4 (fr
Inventor
Michael David Handler
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.)
Reseal International LP
Original Assignee
Reseal International LP
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 Reseal International LP filed Critical Reseal International LP
Priority claimed from PCT/US1996/020913 external-priority patent/WO1998029786A1/fr
Publication of EP0890146A1 publication Critical patent/EP0890146A1/fr
Publication of EP0890146A4 publication Critical patent/EP0890146A4/fr
Withdrawn legal-status Critical Current

Links

Definitions

  • This invention relates to sheath valves, i.e., valves which permit the flow of liquid in only one direction.
  • a sheath valve which preferably uses a tensioned linear sheath, that is a planar sheath, rather than a cylindrical sheath and to a sheath valve which is vacuum actuated.
  • a sheath valve is a type of one-way valve which permits a liquid, gas, or other flowable material to be dispensed, but does not permit anything to pass backwards through the valve, and so prevents possible contamination to the contents remaining in the dispensing container.
  • One form of one-way valve is a cylindrical core encompassed by an elastic cylindrical sheath, with the core having an entrance tube therein leading to a portion of the sheath, and an exit tube leading from the sheath.
  • the two tubes are closed by the sheath and do not interconnect; but pressure applied to the liquid being dispensed serves to expand the sheath so that the liquid can pass from the entrance tube to the exit tube. Upon release of the pressure, the sheath contracts, sealing the valve against any possible reverse contamination .
  • My one-way, vacuum actuated sheath valve uses inexpensive flat, elastic sheath material held in tension over a convex surface, that is, a surface which is wholly or partly curved or distended along at least one axis of a valve platform, which surface I refer to as a valve platform having a convex surface .
  • a convex surface that is, a surface which is wholly or partly curved or distended along at least one axis of a valve platform, which surface I refer to as a valve platform having a convex surface .
  • the valve can control flow of various types of flowable products, such as liquids, pastes, and gases, referred to herein as "liquids.”
  • the various embodiments include as elements (a) a valve platform with a convex surface; (b) a sheath which can be a flat elastic sheet prepared from roll stock, a preformed injection, or compression molded component; (c) a housing component or cover for sheath protection and retention, the cover and valve platform being sealed together; and (d) a source of vacuum, such as a vacuum pump or a Venturi aspirator.
  • valve platform that is the functional area in terms of barrier and closure, the sheath being in tension over the surface of the sheath where it interfaces with the valve platform.
  • This platform can take a variety of shapes, ranging from a dome to a section of an elongated cylinder. The key consideration is the natural lay and stretch of a sheath when placed in tension, and its tight contact and interface with the valve platform.
  • Second, is the number and configuration of entrance and exit ports and channels that function to channel liquid flow within the context of the valve.
  • anchor mechanisms can take various forms, but each uses a cover piece which sandwiches the edges of the sheath between the platform and the cover piece; and each provides for spacing between the cover piece and the platform in the area where the ports interface with the sheath, i.e., an expansion chamber, so that the sheath can expand under pressure to permit fluid flow between the ports .
  • a source of vacuum is a source of vacuum. It can be of any desired type, such as a vacuum pump or a Venturi . It is connected to the exit port and to a vacuum channel leading to the expansion chamber. DESCRIPTION OF THE DRAWINGS
  • Fig. 1 is a perspective view of a dispenser of the type which might use the vacuum actuated sheath valve of this invention.
  • the receiving container and source of vacuum are omitted from this view.
  • Fig. 2 is a partial section, taken on line 2-2 of Fig. 1, showing how the valve can be used in a dispenser.
  • Fig. 3 is an enlarged view of the circled area 3 of Fig. 2, used to better show the operation of the valve. It differs from Fig. 2, however, in that in Fig. 3 vacuum has been applied and fluid or paste is being drawn through the valve .
  • Fig. 4 is an exploded perspective view of the vacuum actuated sheath valve of my invention. A receiving container and a source of vacuum have been added to the sheath valve shown in Fig. 1.
  • Fig. 5 is a top plan view of the valve platform shown in Fig. 4.
  • Fig. 6 is an elevation, taken on line 6-6 of Fig. 5.
  • Fig. 7 is a section, taken on line 7-7 of Fig. 5, showing details of the construction.
  • Fig. 8 is a perspective view, showing a modification of my vacuum actuated sheath valve .
  • Fig. 9 is a section, taken on line 9-9 of Fig. 8.
  • Fig. 10 is a plan view of the valve platform of the modification of Fig. 8.
  • Fig. 11 is a partial section of the modification of Fig. 8, but including the dispensing container and a Venturi vacuum source.
  • the liquid used in the Venturi to produce a vacuum is mixed with the received food, i.e., liquid/concentrate from the dispensing container.
  • This modification could be used, for instance, to mix a concentrate of tea or juice with water, for dispensing at a soda fountain.
  • Fig. 12 is a plan view, similar to Fig. 5, showing a valve with a plurality of inlet channels.
  • FIG. 1 A typical installation 1 of my one-way, vacuum actuated sheath valve is shown in Fig. 1 (a receiving container and a vacuum source are not shown) .
  • Collapsible container 3 contains the liquid or paste to be dispensed; and the user wants to be sure not to inadvertently contaminate the liquid or paste by back-flow into container 3. This use of a sheath valve prevents such back-flow, and acts as a one-way valve.
  • My sheath valve 11 draws the liquid or paste from container 3; and the liquid or paste leaves the valve through exit 53. As shown in Fig. 4, it then enters a receiving chamber 61, which, in turn, is connected to an aspirator, a vacuum pump, or other source of vacuum 71.
  • Sheath valve 11 includes cover 21, valve platform 33, and exit manifold 51. The parts of sheath valve 11 are best seen in Figs. 2 through 7.
  • the valve described herein is a linear sheath valve, that is, its sheath (elastomeric membrane) 29 is not cylindrical, as set forth in the aforementioned patents, but is made of material which is either sheet material or essentially planar.
  • the parts of the sheath valve include:
  • the expansion chamber is preferably a slight recess in surface 22, but could, if desired, have a greater volume;
  • valve platform 33 having a convex inner surface 34, a peripheral seat 35 for cover shoulder 25, an inlet channel 39 (with sheath end 43 and container end 41) , and outlet channel (vacuum channel) 45 (with sheath end 47 and user end 49) ;
  • the surface can be spherical or cylindrical, but preferably should complement concave surface 22;
  • Manifold 51 (d) manifold 51, with plenum chamber 55 connected to vacuum channel 27 and outlet channel 45.
  • Manifold 51 is sealed, around the edge of the plenum, to cover 21 and valve platform 33, providing an air-tight seal around the interconnection of the manifold with channels 27 and 45.
  • the outlet 53 from the manifold leads to the inlet 63 of a receiving chamber 61 for receiving the liquid or paste being delivered; and the inlet 63 is sealed at 65 to exit 53 with sealing ring 65.
  • Chamber 61 is, in turn connected to vacuum pump, Venturi aspirator, or other source of vacuum 71 through sealed conduit 73. If the source of the vacuum is a Venturi aspirator, it can use flow of air, water, or other fluid to power the aspirator.
  • membrane 29 is held tautly against convex surface 34, thus sealing channel ends 41 and 47. Thus, no contaminants can pass backwardly through the channels 39 and 45 and enter flexible container 3.
  • pressure on the outside of container 3 can serve to force paste or liquid through inlet channel 39, forcing membrane 29 upwardly into expansion chamber 23, giving it a path to outlet channel 45.
  • the paste or liquid drawn from the container 3 is drawn by the vacuum from the plenum through manifold exit 53 into receiving container 61.
  • vacuum is applied from the source 71, through receiving chamber 61, and through the manifold plenum chamber 55, to be applied to the membrane through vacuum channel 27, in cover 21, and to outlet channel 45, in valve platform 33.
  • Fig. 12 shows a modified valve with inlet channels 39, 39a and 39b, with container ends 41, 41a and 41b, respectively, and with sheath ends 43, 43a and 43b, respectively.
  • Channel 39a is an inlet channel
  • channels 45a, 45b, and 45c are outlet channels.
  • Each leads to convex inner surface 34a of valve platform 33a.
  • Cover 21a has three outlet channels 56a, 56b, and 56b which connect, respectively, with channels 45a, 45b, and 45c.
  • the manifold 51a is above cover 21a and sealed to it. It includes plenum 55a which connects the outlets of channels 56a and 56b with manifold exit 53a, leading to a source of vacuum.
  • the plenum 55a is also connected to the expansion chamber 23, above membrane 29, by duct 57a.
  • the vacuum source is an aspirator 75, and fluid runs through the aspirator from inlet 77 to outlet 79, through restriction
  • the object is to dispense a concentrate from container 3 and to have it mix with the fluid being used to create the vacuum to produce the desired end mixture.
  • concentrated tea or juice could be mixed with water at a soda fountain in order to produce a final mixed drink of predetermined proportions .
  • the unit of Fig. 11 works in a manner similar to that of Figs. 1 to 7.
  • the cover 21b includes a vacuum channel 56c leading between expansion chamber 23c and plenum 55b of manifold 51b.
  • a membrane 29 is between the cover and the valve platform 33b; and the valve platform has an inlet channel 39b and an outlet channel 45d.
  • differential force is applied to membrane 29, and the liquid is drawn from container 3, is drawn under the membrane to plenum 55b, out manifold exit 53b and into aspirator inlet 81. There it is mixed with the water operating the aspirator and the mixture exits the unit through aspirator outlet 79.
  • an aspirator is used as the source of vacuum, different fluids can be used to power it. If a liquid is used, it may mix with the paste or liquid being dispensed; if air or some other gas is used, the resulting effective mixture can be dispensed as an aerated stream or vaporized spray .

Landscapes

  • Degasification And Air Bubble Elimination (AREA)

Abstract

L'invention porte sur une vanne anti-reflux linéaire (11) possédant une plate-forme (33) et un couvercle hermétique (21). Une membrane élastomère (29) est maintenue tendue entre le couvercle (21) et la plate-forme (33) de façon à réguler l'écoulement de liquide entre les canaux d'admission et d'évacuation (39, 45). Le couvercle (21) comprend une zone de dilatation (23) sur sa surface adjacente à la membrane (29) et s'étendant entre l'admission (39) et l'évacuation (45). Le liquide s'écoule dans la vanne (11) lorsqu'il est aspiré par un vide. Le vide agit sur la sortie de la voie d'écoulement, mais aussi au-dessus de la membrane (29), la soulevant pour ouvrir la voie d'écoulement. L'interruption du vide permet à la membrane (29) de fermer hermétiquement l'admission (39) et l'évacuation (45), ceci empêchant de nouveau tout écoulement entre les deux canaux.
EP96945455A 1996-12-27 1996-12-27 Vanne anti-reflux lineaire Withdrawn EP0890146A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
PCT/US1996/020913 WO1998029786A1 (fr) 1995-03-06 1996-12-27 Vanne anti-reflux lineaire
CN96180129A CN1209205A (zh) 1995-03-06 1996-12-27 真空致动鞘式阀
CA 2247840 CA2247840A1 (fr) 1995-03-06 1996-12-27 Vanne anti-reflux lineaire

Publications (2)

Publication Number Publication Date
EP0890146A1 true EP0890146A1 (fr) 1999-01-13
EP0890146A4 EP0890146A4 (fr) 2000-11-29

Family

ID=27170814

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96945455A Withdrawn EP0890146A4 (fr) 1996-12-27 1996-12-27 Vanne anti-reflux lineaire

Country Status (1)

Country Link
EP (1) EP0890146A4 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3465786A (en) * 1966-09-08 1969-09-09 Gar Wood Ind Inc Vacuum check valve
WO1996012904A1 (fr) * 1994-10-24 1996-05-02 Reseal International Limited Partnership Soupape lineaire a gaine
US5520661A (en) * 1994-07-25 1996-05-28 Baxter International Inc. Fluid flow regulator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3465786A (en) * 1966-09-08 1969-09-09 Gar Wood Ind Inc Vacuum check valve
US5520661A (en) * 1994-07-25 1996-05-28 Baxter International Inc. Fluid flow regulator
WO1996012904A1 (fr) * 1994-10-24 1996-05-02 Reseal International Limited Partnership Soupape lineaire a gaine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO9829786A1 *

Also Published As

Publication number Publication date
EP0890146A4 (fr) 2000-11-29

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