EP0450990A1 - Selbstschliessendes Ventil, insbesondere für einen Aerosolbehälter - Google Patents
Selbstschliessendes Ventil, insbesondere für einen Aerosolbehälter Download PDFInfo
- Publication number
- EP0450990A1 EP0450990A1 EP91400288A EP91400288A EP0450990A1 EP 0450990 A1 EP0450990 A1 EP 0450990A1 EP 91400288 A EP91400288 A EP 91400288A EP 91400288 A EP91400288 A EP 91400288A EP 0450990 A1 EP0450990 A1 EP 0450990A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chamber
- rod
- seal
- valve
- groove
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D83/00—Containers or packages with special means for dispensing contents
- B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
- B65D83/44—Valves specially adapted therefor; Regulating devices
Definitions
- the present invention relates to a self-locking valve, in particular for an aerosol container containing a product to be sprayed.
- the containers or aerosol cans contain, in a known manner, a product to be dispensed and a propellant.
- the distribution is done by opening a valve, comprising a rod contained in a valve body.
- This valve body is, on the one hand, in communication with the atmosphere through an internal conduit of the rod, and, on the other hand, with the container in general by means of a dip tube, a device of the valve stem being connected to the stem and to the valve body.
- the valve stem is pressed by pressing, for example, a push button, so as to put the container and the atmosphere in communication and to spray the product contained in the container; when the pressure on the push button is released, the return device returns the valve stem to its rest or storage position and spraying stops.
- the present invention relates to a valve which makes it possible to solve this problem; it includes a seal, dividing the valve body into two chambers, a seal which slides in the valve body when the valve stem is pushed in and can slide on the stem when the pressure in the chamber in communication with the container exerts on the seal an opposing force greater than the force exerted by a spring contained in the chamber in communication with the atmosphere.
- the present invention therefore relates to a self-locking valve, in particular for aerosol containers containing a product to be sprayed, comprising a rod, at least partially tubular to allow the outlet of the sprayed product, slidingly mounted in a valve body, and that is pushed into the valve body to activate the spraying, the valve body being able, on the one hand, to be placed in communication with the atmosphere and, on the other hand, in communication with the container, preferably using a dip tube, a valve stem return device being connected to the stem and to the valve body, characterized in that the valve body is divided by a seal in two chambers, a first chamber which can be placed in communication with the atmosphere when the stem is pressed and a second chamber which is in communication with the container, that the seal is capable of sliding, on the one hand, on the internal wall of the valve body and, on the other hand, on the valve stem between a stop disposed on said stem valve and a position where communication is established between the first and second chambers, a spring being disposed in the first chamber
- the joint separating the two chambers is advantageously constituted by a washer threaded around the rod, the stop being constituted by a collar of the rod situated on the side of the joint facing the second chamber.
- the seal is preferably an elastic seal.
- the rod is pierced with a bore perpendicular to its axis which opens in the tubular part of the rod and which, when the rod is pressed opens inside the first chamber so as to connect said first chamber and the atmosphere while at rest this bore is isolated from the first chamber.
- the rod preferably comprises, at the level of the first chamber, at least one groove which makes it possible to put the first and second chambers into communication, by relative sliding of the rod and of the seal, this groove being closed when the seal is in abutment against the stop.
- annular cup forming a seal support.
- This cup has the advantage of allowing a better distribution of the force exerted by the spring on the seal, and avoids any risk of deterioration of the seal by the spring.
- the rod return device contained in the second chamber is preferably constituted by a spring.
- the second chamber is provided with an additional gas intake.
- This additional gas intake is, for example, constituted by an opening pierced in the bottom of the valve body, which allows entry into the valve body of the gaseous phase which collects in the upper part of the container. It has been found that this additional gas intake makes it possible to obtain good spraying.
- Such a self-locking valve is particularly intended for an aerosol container using a compressed gas (air, nitrogen for example) as propellant, a gas whose pressure gradually decreases after use.
- a compressed gas air, nitrogen for example
- the invention also aims to provide a self-locking valve, the rod of which has a groove as indicated above, which ensures a flow rate of sprayed product as regular as possible without the drying of the product becoming too troublesome.
- the present invention therefore, also has for its object, a self-locking valve, as defined above and in which a communication is established between the first and the second chambers, by virtue of a groove made in the valve stem, characterized by the fact that the groove formed on the valve stem has, in section perpendicular to the axis of the stem, an increasing section along a direction parallel to the axis of the valve stem, the largest section being located from the side of the second chamber, so that the passage section, offered to the product to be dispensed, increases when the pressure decreases in the container.
- the means ensuring the regulation of the flow of product to be sprayed are thus located on the valve, inside the aerosol can, so that the risks of drying of the product are reduced.
- the bottom of the groove gradually deviates from the outer surface of the rod, so that the depth of the groove increases, in the direction from the first chamber towards the second bedroom.
- the bottom may be constituted by a flat surface, the section of which by a mean plane passing through the axis of the rod is a straight segment.
- the section of the groove advantageously has the shape of a right triangle, one side of which is situated on the external surface of the rod, the other side of which is situated towards the second chamber, and the hypotenuse is located in the stem.
- the peripheral width of the groove can gradually increase in the direction from the first chamber to the second chamber.
- the progressive increase in width can be combined with the progressive increase in depth.
- Figure 1 of these drawings is a longitudinal section of a self-locking valve according to the invention in the rest or closed position.
- Figure 2 shows, similarly to Figure 1, the valve in the open position with the rod pressed, the pressure in the container being sufficient.
- Figure 3 shows the valve with stem pushed in, while the pressure in the container is insufficient.
- Figure 4 is a longitudinal sectional view of an alternative embodiment of the self-locking valve in the rest or closed position.
- Figure 5 shows in elevation the valve stem of Figure 4.
- Figure 6 is a section along the line VI-VI of figure 5.
- Figure 7 shows, similarly to Figure 4, the valve in the open position with the rod pressed, the pressure in the container being sufficient.
- FIG 8 finally, partially shows the valve of Figure 4 with pressed rod, while the pressure in the container is insufficient.
- FIG. 1 represents the self-locking valve according to the invention, generally designated by 1, in the rest position.
- the valve 1 is constituted by a rod 2 and by a valve body 3.
- the valve 1 is inserted into the closure cup 4 of an aerosol container (not shown).
- the seal between the closure cup 4, the rod 2 and the valve body 3 is ensured by means of an elastic seal 5 in which the rod 2 can slide in leaktight manner.
- the valve body 3 is divided, by an elastic seal 6, into two chambers, a first chamber A which can be placed in communication with the atmosphere and a second chamber B which is in permanent communication with the aerosol container containing the product to spray and the propellant, via a dip tube 7.
- the seal 6 consists of a washer, in particular of elastomeric material, threaded around the rod 2, with its mean plane orthogonal to the axis of the rod.
- chamber B contains a rod return device constituted by a spring 9 arranged between one face of an annular stop 21 of the rod 2 and the bottom of chamber B.
- the seal 6, in the valve rest position, is arranged on the other face of the stop 21.
- the rod 2 is tubular in its part 22 facing outwards, this tubular part 22 extending up to a level of the rod 2, such that, in the rest position, it is contained in the chamber A.
- the rod 2 is pierced with a bore 23 perpendicular to the axis of the rod 2 which opens in the tubular part 22 of the rod and which is located at a level such that in the rest position of the rod 2 it is firm by the seal 5.
- the rod 2 is provided with a longitudinal rectilinear groove 25, which extends from the vicinity of the stop 21 to a shoulder 24 of the rod 2.
- the chamber A contains an annular cup 10 which rests on one face of the seal 6.
- Chamber A further contains a spring 11 which is disposed between an annular shoulder 24 of the rod and the annular cup 10.
- the spring 11 is chosen so that it exerts on the seal 6 a determined force which is equal to the force antagonist exerted on the joint by the minimum gas pressure for which there is suitable spraying.
- valve rod 2 is pressed so as to push it in.
- the external wall of the valve stem 2 slides in the seal 5 and releases the bore 23 which connects the chamber A and the tubular part 22 of the valve stem 2 (see FIG. 2).
- Chamber A is brought to atmospheric pressure.
- the pressure inside the container and of chamber B if it is greater than the minimum admissible pressure, exerts a force greater than the force of the spring 11 and in the opposite direction.
- the seal 6 is pushed back on the rod side of the chamber A by compressing the spring 11 and releasing the groove 25 hollowed in the rod 2.
- the passage of the product from the chamber B towards the chamber A becomes possible.
- the product follows the path marked by the arrows f1 in Figure 2 to be sprayed.
- Figure 3 illustrates what happens when the pressure inside the container is below the minimum allowable pressure.
- the valve stem 2 is provided with a groove 125 situated at the level of the first chamber A, when the valve is in the rest position as shown in FIG. 1.
- the stem 2 is pressed and the pressure exerted by the product in the container is greater than the minimum pressure Po, the rod 2 slides relative to the seal 6, as visible in FIG. 7, and a certain length of the groove 125 opens in the second chamber B, which puts in communication the first and second chambers A, B.
- the groove 125 formed on the rod 2 has, in section perpendicular to the axis of said valve body, a section S (see FIG. 6) increasing along a direction parallel to the axis C of the rod, the section S the largest being located on the side of chamber B, as visible in FIG. 4.
- the gradual increase in section S can be obtained by a gradual increase in the radial depth h of the groove.
- the bottom 125 a of the groove 125 then gradually moves away from the external surface 2 a of the rod, as visible in FIGS. 4 and 7.
- the bottom 125 a can be constituted by a flat surface whose section, by a mean plane passing through the axis C, is a rectilinear segment.
- the section of the groove 125, by such a plane, has the shape of a triangle rectangle with one side 125 b located on the outer surface 2 a of the stem, the other side 125 c , orthogonal to the axis C, is located towards the second chamber and whose hypotenuse is located in the stem 2 and belongs to the bottom 125 a .
- the end of the groove 125, facing the second chamber B, is situated, when the valve is at rest, in the thickness of the seal 6, as visible in FIG. 4; the 125 c rib is located substantially at mid-thickness.
- the peripheral width 1 preferably, gradually increases in the direction from the first chamber to the second chamber, as can be seen in FIG. 5.
- Chamber A contains an annular cup 10 which rests on one face of the seal 6. It also contains a spring 11 which is arranged between an annular shoulder 24 of the valve stem 2 and the annular cup 10. The spring 11 is chosen to so that it exerts on the joint 6 a determined force which is equal to the opposing force exerted on the joint by the minimum pressure of the gas for which there is suitable spraying.
- the operation of the self-locking valve 1 is as follows.
- valve rod 2 is pressed so as to push the latter.
- the seal 5 slides on the external wall of the valve stem 2 and releases the bore 23 which connects the chamber A and the tubular part 22 of the valve stem 2.
- Chamber A is brought to atmospheric pressure.
- the pressure inside the container and of chamber B if it is greater than the minimum admissible pressure, exerts a force greater than the force of the spring 11 and in the opposite direction.
- the seal 6 is pushed back onto the valve stem 2 from the side of the chamber A by compressing the spring 11 and releasing the groove 125 hollowed out in the valve stem 2, as illustrated in FIG. 7.
- the increase in the passage section makes it possible to compensate, at least partially, for the drop in pressure and to keep the flow rate of the sprayed product substantially constant.
- valve stem 2 When you stop pressing the valve stem 2, the latter slides under the action of the return spring 9 and returns to the rest position.
- the bore 23 returns to the level of the seal 5 and the communication between the chamber A and the atmosphere is cut off.
- the pressure is balanced between the chambers A and B and the seal 6 goes down again on the valve stem 2 until it comes into contact with the stop 21.
- the communication between the chambers A and B via the groove 125 n is therefore no longer possible.
- the valve 1 is again in the rest position as shown in FIG. 4.
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Nozzles (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9004246 | 1990-04-03 | ||
FR9004246A FR2660398B1 (fr) | 1990-04-03 | 1990-04-03 | Valve autobloquante, notamment pour recipient aerosol. |
FR9012402A FR2667673B2 (fr) | 1990-04-03 | 1990-10-09 | Valve autobloquante, notamment pour recipient aerosol. |
FR9012402 | 1990-10-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0450990A1 true EP0450990A1 (de) | 1991-10-09 |
EP0450990B1 EP0450990B1 (de) | 1993-10-06 |
Family
ID=26227957
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19910400288 Expired - Lifetime EP0450990B1 (de) | 1990-04-03 | 1991-02-07 | Selbstschliessendes Ventil, insbesondere für einen Aerosolbehälter |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0450990B1 (de) |
DE (1) | DE69100458T2 (de) |
ES (1) | ES2046020T3 (de) |
FR (1) | FR2667673B2 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2705323A1 (fr) * | 1993-05-17 | 1994-11-25 | Oreal | Valve de diffusion pour un récipient aérosol, et récipient aérosol équipé d'une telle valve. |
US5704161A (en) * | 1992-09-04 | 1998-01-06 | Southpac Trust International, Inc. | Plant cover and sleeve formed from two materials |
EP0931734A1 (de) | 1998-01-23 | 1999-07-28 | L'oreal | Ventil zur Durchflussregelung einer Flüssigkeit und mit solch einem Ventil versehener Behälter |
WO2002031402A1 (en) * | 2000-10-12 | 2002-04-18 | Kim, Yong-Su | A refilled type butane gas cask |
EP1291293A1 (de) * | 2001-09-10 | 2003-03-12 | L'oreal | Ventil mit variablem Durchfluss und Behälter mit einem solchen Ventil |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW376128U (en) * | 1998-04-29 | 1999-12-01 | Topeak Inc | Micro pressure reducing tools |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2837249A (en) * | 1957-05-10 | 1958-06-03 | Meshberg Philip | Aerosol valve |
CH335576A (fr) * | 1954-09-20 | 1959-01-15 | Meshberg Philip | Dispositif à soupape destiné à commander le débit d'un fluide sous pression contenu dans un récipient |
US3018928A (en) * | 1958-11-24 | 1962-01-30 | Meshberg Philip | Metering valve |
BE709202A (de) * | 1967-01-20 | 1968-05-16 | ||
AT303604B (de) * | 1970-03-16 | 1972-12-11 | Alusuisse | Selbstspülendes Druckventil |
GB1321272A (en) * | 1969-10-20 | 1973-06-27 | Pittway Corp | Pressurised dispensing containers and valves thereof |
DE2264061A1 (de) * | 1971-12-29 | 1973-07-05 | Int Fire Tool Corp | Druckgefaess fuer fluessiggas |
DD103041A5 (de) * | 1972-03-27 | 1974-01-05 | ||
AT326032B (de) * | 1971-07-27 | 1975-11-25 | Coster Tecnologie Speciali Spa | Ventil für aerosolbehälter |
-
1990
- 1990-10-09 FR FR9012402A patent/FR2667673B2/fr not_active Expired - Lifetime
-
1991
- 1991-02-07 ES ES91400288T patent/ES2046020T3/es not_active Expired - Lifetime
- 1991-02-07 EP EP19910400288 patent/EP0450990B1/de not_active Expired - Lifetime
- 1991-02-07 DE DE1991600458 patent/DE69100458T2/de not_active Expired - Fee Related
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH335576A (fr) * | 1954-09-20 | 1959-01-15 | Meshberg Philip | Dispositif à soupape destiné à commander le débit d'un fluide sous pression contenu dans un récipient |
US2837249A (en) * | 1957-05-10 | 1958-06-03 | Meshberg Philip | Aerosol valve |
US3018928A (en) * | 1958-11-24 | 1962-01-30 | Meshberg Philip | Metering valve |
BE709202A (de) * | 1967-01-20 | 1968-05-16 | ||
GB1321272A (en) * | 1969-10-20 | 1973-06-27 | Pittway Corp | Pressurised dispensing containers and valves thereof |
AT303604B (de) * | 1970-03-16 | 1972-12-11 | Alusuisse | Selbstspülendes Druckventil |
AT326032B (de) * | 1971-07-27 | 1975-11-25 | Coster Tecnologie Speciali Spa | Ventil für aerosolbehälter |
DE2264061A1 (de) * | 1971-12-29 | 1973-07-05 | Int Fire Tool Corp | Druckgefaess fuer fluessiggas |
DD103041A5 (de) * | 1972-03-27 | 1974-01-05 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5704161A (en) * | 1992-09-04 | 1998-01-06 | Southpac Trust International, Inc. | Plant cover and sleeve formed from two materials |
FR2705323A1 (fr) * | 1993-05-17 | 1994-11-25 | Oreal | Valve de diffusion pour un récipient aérosol, et récipient aérosol équipé d'une telle valve. |
EP0931734A1 (de) | 1998-01-23 | 1999-07-28 | L'oreal | Ventil zur Durchflussregelung einer Flüssigkeit und mit solch einem Ventil versehener Behälter |
WO2002031402A1 (en) * | 2000-10-12 | 2002-04-18 | Kim, Yong-Su | A refilled type butane gas cask |
EP1291293A1 (de) * | 2001-09-10 | 2003-03-12 | L'oreal | Ventil mit variablem Durchfluss und Behälter mit einem solchen Ventil |
FR2829475A1 (fr) * | 2001-09-10 | 2003-03-14 | Oreal | Valve a debit variable et recipient equipe d'une telle valve |
Also Published As
Publication number | Publication date |
---|---|
FR2667673A2 (fr) | 1992-04-10 |
DE69100458D1 (de) | 1993-11-11 |
ES2046020T3 (es) | 1994-01-16 |
DE69100458T2 (de) | 1994-05-11 |
FR2667673B2 (fr) | 1993-03-19 |
EP0450990B1 (de) | 1993-10-06 |
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