DE1812718A1 - Distribution device with mixing valve - Google Patents

Description

Aerosol Inventions and Development SA 4 Boulevard de Perolles
Freiburg / Sohweiz

Patent registration

"Distribution device with mixing valve"

The invention "relates to small, hand-held too." holding, pressurized distribution devices, such as those used for shaving cream and the like. The invention "relates in particular to a distribution device of the type mentioned, in which several different liquids are separated are stored from each other, which are mixed in a valve during the dispensing process.

In one known from the USA patent specification 3 * 326,416 now the distribution device for base foam, the two different liquids are mixed in one Valve - with simultaneous heating of the foam, the liquid suitable for this is hydrogen super - oxide, the other liquid can under phosphorous s Ifa ^ trium contain »The reaction of these two substances causes an exothermic, non-explosive decomposition of the hydrogen peroxide and heats the foam components so that a heated foam-forming mixture is released instead of hypophosphorous sodium, caustic soda can also be used for the reaction with hydrogen peroxide.

lium sulfite has been used

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SAD ORiQINAt

U.S. Patents 3,217,936, 3,272,389, and 3,325-056 show other mixing valves. While the earlier devices worked successfully in most circumstances, the mixing valves and dispensing devices shown were either complex and expensive, difficult to manufacture and not entirely reliable in use, or they were inconvenient to use. which required a considerable amount of machining, warehousing, and assembly work. If the movements were complicated or if they depended on critical values of the suspension capacity, the result was unreliable effectiveness, errors, etc. Ψβηη. critical dimensions were present, additional costs arose.

The above-mentioned disadvantages and impairments of the known distribution devices of the mixed design are eliminated by the present Invention avoided, the preferred object of which is to provide a new and improved dispensing device having multiple chambers and to create a mixing valve that is particularly simple and uncomplicated, consisting of only a few individual parts, that performs simple, regulated movements, is particularly cheap to manufacture and that is improved and more reliable Way worked

For this purpose, according to the proposal of the invention, the distribution device has a tubular, cast from plastic, with two im axial distance from one another, annular valve seats equipped valve housing, one end of which in the Hollow lid of a pressurized outer container is mounted and the other end with the neck of an inside the Outer container arranged flexible bag is tightly connected, which is carried by the valve housing and with it in Connection is "one in the valve housing in the longitudinal direction Movable valve rod protrudes with its one, tubular end part through which the dispensed mixture flows to the outside, out of the valve housing and has at the base

SAO OBiGiNAL

this tubular end part has an annular shoulder with the a valve seat cooperates. Another part of the valve rod comes to rest around the other valve seat close. Both valve seats are open when the valve stem is depressed and a first flows in this pail Liquid from the flexible bag through the second-mentioned valve seat and another liquid from the outer container through a lateral through opening in the wall of the valve housing; - «it in its interior and both streams of liquid mix there. The mixture exits the valve housing through the first-mentioned valve seat and flows through the tubular one End part of the valve rod to the outside, the ring shoulder the valve rod effectively seals off the mixture flow when the valve rod is not depressed. The valve stem is formed by a simple, cast part. On other parts of the mixing valve only has the valve housing, one simple spring and a valve disc forming the first-mentioned valve seat. In other words, the invention relates a hand-held dispensing device having a plurality of fluid chambers and a mixing valve comprising a tubular Valve housing with two ring-shaped valve seats, with a valve rod that is longitudinally movable on the valve housing Valve parts for the simultaneous closing and opening of the valve seats. The valve housing has a side, if necessary with a siphon tube connected through opening and is at one end of the hollow cover one with one under Pressurized liquid-filled outer container carried, in which a flexible, with the other end of the valve housing connected bag filled with another liquid. The two different fluids of the The outer container and the bag are mixed when the valve stem is raised and the two valve seats open.

Other objects of the invention are to provide the above shown improved distribution device with mixing valve, from which the desired withdrawal both when turned upside down

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also "can be done with the upright position of the container, what due to the special design of the connection between the interior of the outer container and the lateral through opening of the valve housing is made possible. The possibility of an undesired leakage or mixing of the individual Liquids are greatly reduced if not eliminated entirely. After all, there should only be a single valve seat the-relatively large, only effective in one direction Be exposed to pressure of the pressurized liquid in the container.

Other features and advantages of the distribution device according to the Invention will emerge from the following description with reference to the drawings.

Fig. 1 shows the axial section through the simplified mixing valve and the multi-chamber distributor device according to the Invention with a closed, non-releasing valve,

FIG. 2 shows an axial section similar to that of FIG. 1, but with the distributor device reversed and with the dispensing valve _{f open}

Fig. 3 shows an axial section similar to that of FIG Another embodiment of the invention which is suitable for removal when the storage container is lined up is,

FIG. 4 shows an axial section similar to that of FIG. 2 in the delivery position of the distribution device "

The hand-held one equipped with a mixing valve Distribution device comprises a relatively solid, metallic outer container 10 of conventional design with a upper shoulder 12 and a neck part 14, which is spanned by a hollow cover 16 of the usual shape. The hollow lid 16 has an upstanding central portion 18 in the shape of an inverted cup with a central opening 20

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in the above Y / and. This from an upward-facing one Edge 22 delimited opening 20 is of such a size that that a vertical valve rod 24 can slide in it.

Inside the outer container 10 is one of the Hollow cover 16 carried, tubular, plastic molded valve housing 26 with a stepped central bore 28 and an annular support flange 30 located at the upper end, which is flush with the central part 18 of the hollow cover 16 is applied and is held there by an inwardly protruding bead 32 β

Between the upper wall 34 of the central part 18 and the The upper end of the valve housing 26 has a resilient valve disc 36 clamped with a central opening through which the valve rod 24 extended

The upper part of the valve rod 24 carries a push button 38 of conventional form with a dispensing nozzle 40. This push button j is 38 in a fixed, the upper part of ^A 10 ußenbehälters fixed guide portion 42 guided.

According to the invention, the valve rod 24 and the valve housing 26 with the valve disc 36 are designed so that they have a mixing valve in connection with a flexible and collapsible bag located in the outer container 10 form. In this case, the valve housing 26 is used to mix two streams, one from the contents of the outer container 10 and one from the contents of the flexible pouch instead.

The flexible and collapsible bag 44 has a neck part surrounding the lower part of the valve housing 26 46, so that the bore 28 of the valve housing 26 is in communication with the interior of the flexible bag 44. Included the bag 44 and aas valve housing 26 through appropriate Medium held close together.

With a valve disk 36, an external valve rod works 24 attached ring shoulder 48 together. The ΐβίΐ 50 of the valve rod 24 located above the annular shoulder 48 is tubular designed and has a lateral through opening 52 directly above the annular shoulder 48. A return spring 54 lies on the annular shoulder 48 of the valve rod 24 ′ and on the inwardly extending annular shoulder 56 of the valve housing 26 and pushes the valve rod 24 upwards, as in FIG. 1 is shown. thereby the annular shoulder 48 is pressed against the valve disc 36 and the valve is closed, so that neither the contents of the outer container 10 nor that of the bag can flow out

The shoulder 56 of the valve housing 26 forms with its inner edge to the valve seat 58 / to ^r of the lower cylindrical part rests 60 of the valve rod 24 and terminates as the bore in the valve housing and the ascent of liquid from the bag 44 prevented

Valve stem 24 has a lateral indentation located above cylindrical portion 60, which when the valve stem is depressed or, as shown in FIG. 2, is pushed inward, within the valve seat 58 forming inner edge of the shoulder 56 lies. The lateral through-opening 52 is located in this position of the valve rod of the upper tubular portion 50 of the valve rod 24 within the valve housing 26 and in this way becomes a flow path formed by the contents of the flexible bag 44 up through the valve housing 26 at the lower part the valve rod 24 over, through the lateral through opening 52 in the upper part 50 of the valve rod 24 through and after up through the tubular upper part 50 of the valve rod and finally through the outlet nozzle 40 of the push button 38 emanated from the outside

The valve housing 26 has a lateral through opening 62,

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through which the interior of the outer container 10 with the interior of the Valve housing 26 is in communication. When the valve rod As shown in FIG. 2, the contents of the outer container 10 can also be removed. This content flows through the lateral through-opening 62 inwards into the interior of the valve housing 26 and mixes (in this position) with that from the flexible bag 44 upwards flowing liquid, the mixture of these two liquids then flows through the passage opening 52 of the valve rod and then through the tubular upper part 50 of the valve stem to finally exit the exhaust nozzle 40 of the push button 38 to exit as a mixture

If the dispensing device should dispense a warm foam, the flexible bag 44 can be filled with hydrogen peroxide, while in the outer container 10 one of various Components of existing foam mixture is present. Such foam mixtures can be soaping, foaming and emollient Contains e.g. hypophosphorous sodium or potassium sulfite. If these substances deal with the Mixing hydrogen peroxide flowing upwards in the flexible bag, a chemical reaction is caused which in there is an exothermic, non-explosive decomposition of the hydrogen peroxide. This creates heat that is transferred to the mixture passes over, so that a heated foam emerges from the outlet nozzle 40 of the push button 38

It will be understood that the contents of the outer container 10 can be removed by the addition of an appropriate non-responsive Pressure medium, e.g. a 40/60 mixture of dichlorofluoromethane and symmetrical dichlorotetralfluorathane, can be pressurized. Other well-known propellants can do just as well be used.

As a result, the contents of the outer container 10 exert on this one Pressure transferred to the flexible bag 44,

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compresses this and causes an internal pressure in it, which is transferred to the hydrogen peroxide in it will. Y / hen the valve rod 24 is now pressed in, as is shown in Figo 2, the pressurized It contains liquids in the outside 10 and in the flexible bag 44 through the valve housing 26, the upper part 50 of the valve rod and the exhaust nozzle 40 pushed out to the outside

In the case of the light delivery position according to FIG. 1, the in the outer container 10 prevailing pressure is constantly transmitted to the contents of the flexible bag 44 and tries to store this content to be discharged to the outside through the valve housing 26 »This] Pressure is constantly acting on the underside of the annular shoulder 58. However, acting within the valve housing as a result of the between the inside of the valve housing 26 and the inside of the outer container 10 existing connection, a corresponding pressure in the opposite, downward direction »

Accordingly, only has the cooperating with the valve disk J6 Ring shoulder 48 of the valve rod 24 to withstand all the pressure present in the distribution device, = this Arrangement is not only particularly simple but it has also been proven to be particularly effective and used over a number of years proved tight.

From the foregoing it can be seen that the invention provides a particularly simple but effective mixing valve for a dispensing device with a number of chambers containing separate amounts of liquid is created, which in the depressed position of the valve rod 24 mixes these liquids within the valve housing 26 ο

The mixing valve comprises relatively few parts, essentially only the cast valve housing 26, the likewise cast valve rod 24, the return spring 54 and the valve disc 36 o. If the valve disc 36 is rigid at the upper end

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of the valve housing 26 is applied, it is as part of the valve housing viewed and in this case the upwardly projecting middle part 18 of the hollow cover 16 is not only used for support of the valve housing, but also for the permanent holding of the valve disc 36 on the end of the valve housing.

3 and 4, there is shown another embodiment of the invention, essentially that in connection with the embodiment described in FIGS. 1 and 2 is the same. Corresponding parts are given the same reference numerals designated. The embodiment according to FIGS. 3 and 4 differs in the presence of a device which enables the delivery of the contents of the distribution device even in the upright position shown in FIG the difference is in the arrangement of one connected to the lateral passage opening of the valve housing Peil- or siphon tube, which extended from there down to the vicinity of the bottom of the outer container 10

The valve housing 26a has a tubular connecting piece 64 which is directed obliquely downwards and whose central through-hole 62a leads into the interior 28a of the valve housing 26a. A siphon tube 66 is inserted over the connecting piece 64, which extends to close to the bottom of the outer container 10, as shown in FIG. 3. The valve housing 26a, the Valve housing 26 is similar, is soldered with a support flange 3oa in the hollow cover and has one with the lower Part 60 of the valve rod cooperating valve seat 58a and an inner ring schu & ter 56a on which the return spring 54 is present.

Operation is the same as that already described, with the difference that the outer container 10 is always in an upright position ^ age remains. As shown in FIG. 4, the on finger pressure exerted on the push button 38 opens the valve

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■ and then liquid comes out of both the compressible

! Bag 44 through the central bore 28a of the valve housing 26a

; upwards as well as through the one with the inside of the outer container

10 connected siphon pipe 66 up through the through-channel

62a and the lateral throughflow opening of the valve housing 26a » • Both liquids are released from the The valve housing is mixed and FIG. 4 shows how the heated mixture leaves the discharge nozzle 40.

The valve shown causes a simple, linear movement of the valve stem which is guided by avoiding skewing and jamming while working particularly reliable. Usually occurs on the valve seat 58 because of the same and opposite pressures ■ · .. serhalb and below the valve seat leakage or seepage on. For this reason, the valve consisting of the valve seat 58 and the cylindrical lower part 60 of the valve rod need not be particularly tight and leak-proof, but can work with a sliding fit with only low pressures and forces.

The entire structure of the distribution device and the mixing valve only requires a minimum number of individual parts and these can be manufactured economically and easily assembled, _etc.

Changes and modifications are possible within the scope of the patent claims, and individual parts can also be used without the others, _etc.

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Claims (6)

- li - claims 1. Hand-held distributor device with several liquid chambers and a mixing valve, comprising a tubular valve housing with two annular valve seats concentric with it, axially spaced from one another, past which the liquid flowing through the valve housing flows and with one located between the two valve seats , continuously open flow opening in the side wall of the valve housing, further comprising a valve rod axially displaceable in the valve housing, passing through the two valve seats mentioned, with a tubular part protruding from one end of the valve housing through the first of the two annular valve seats and with an annular part Shoulder which, when it rests against the first-mentioned ring-shaped valve seat, ^{closes off A} read, a lateral flow opening being provided in the tubular part of the valve rod near its ring-shaped shoulder, which when the valve is pressed down ntilstange lies within the valve housing and allows the passage of liquid from the interior of the valve housing into the tubular part of the valve rod, characterized in that means are provided on the valve rod (24) which cooperate with the second annular valve seat (56) and the liquid Shut off the flow when the annular shoulder (48) of the valve rod (24) closes the first-mentioned annular valve seat and allow the liquid to flow into the valve housing (26) through the second-mentioned valve seat when the valve rod (24) is depressed and its lateral throughflow opening (52) is within of the valve housing (26) is located. 2. Distribution device according to claim 1, characterized in that the valve rod (24) in the vicinity of the second-mentioned valve seat (58, 58a) has a lateral indentation (61) which, when the valve rod (24) is in the depressed position, within - 12 9 0 9 8 37 - 7 0 2 υ Ί 6AOOFUQtNAL of the second-mentioned valve seat (58, 58a) is o 3. Distribution device according to claim 2, characterized in that ₉ of the second-mentioned valve seat (58, 58a) is formed by the inner edge of an inwardly projecting annular shoulder (56, 56a) of the valve housing (26, 26a). 4. Distribution device according to claim 1, characterized by a flexible, compressible bag (44) with his Neck part (46) surrounds the valve housing (26, 26a) so that the contents of a bag (44) to the second-mentioned valve seat (58, 58a) can reach and further characterized by the bag (44) enclosing, pressure-resistant outer container (10) with a the hollow cover (16) holding the valve housing (26, 26a) close to the first-mentioned valve seat. 5. Distribution device according to claim 4, characterized in that the side provided in the valve housing (26, 26a) Flow opening (62, 62a) is located in the vicinity of the hollow cover (16) of the outer container (10). 6. Distribution device according to claim 1, characterized in that the lateral throughflow opening (62a) of the valve housing (26a) a siphon pipe (66) is connected, which extends down to near the bottom of the outer container (10) and the enables the mixing process in the valve housing (26a) when the outer container (10) is upright. The patent attorney 909837 / 02UΊ / 3 Blank page