DE2160133A1 - Improved outlet valve for product containers in double aerosol atomizers - Google Patents

Description

DR. BERG DIPL.-ING. STAPF

8 MUNICH 8O, MAUERK1RCHERSTR. 45

Dr. Berg Dipl.-Ing. Stapf, 8 Mönchen 80, MouerfcircherstraBe 45 · Your letter Our reference VI / ΚΓ 21 816

date

Attorney files: 21 816

Improved outlet valve for product containers in double aerosol atomizers

The invention relates to an improved exhaust valve for Product container in double aerosol atomizers with spatially separated, by a spray nozzle preferably from Venturityp containing intermediate piece connected to one another Product and propellant containers.

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Double aerosol atomizers of this type are s.B. from the USA patent Writings 2 749 178 (Larson), 3 408 010 (Fukui) and 3,451,593 (Dillarstone).

The invention provides an improved exhaust valve for use in a non-pressurized exhaust assembly, as in the double aerosol atomizers listed above - be it with or without internal air pressure control - Is used, which can be attached to a container lid made of plastic or metal, has a very simple structure and therefore requires much less complicated breakdowns to manufacture.

The product outlet valve according to the invention is with a valve housing attached in a suitable manner to the lid of a product container? in which one about a central chamber opening into the container is formed, and with a spring loaded against it the spring load is axially movable in the central axis Valve stem, the valve stem being solid and an outer cylindrical protruding from the housing Has part and an inner part with a recess facing the product container and the spring with one end in the recess and with the other end on the opposite of the recess

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lying wall of the central chamber is supported. On the massive outer shaft part is one on the intermediate piece downwardly protruding sleeve can be placed on the inner surface of the Kuffe of the intermediate piece or on the outer surface dea massive outer shaft part are ver ~ in the longitudinal direction running webs are provided, by means of which a number of channels are formed between the two parts. At her The upper ends of the channels open into a product passage in the intermediate piece, while at their lower ends they open into radial openings run out, which can be brought into flow connection with the central chamber of the valve housing are. Between the cover of the product container and the valve housing there is a part known per se arranged flexible ring seal. The stem of the product valve extends through the seal. The spring loads the product valve stem with the intermediate piece seated on it upwards away from the valve housing into a position in which the flexible ring seal with its inner edge encompasses the stated radial openings closes and thus interrupts the flow connection from the central kettle to the nozzle located in the intermediate piece. When the intermediate piece is pressed down, the product valve stem moves downwards. This causes a Deformation of the flexible ring seal with release

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the flow connection from the central chamber via the radial openings to the channels running in the longitudinal direction and from there via the product passage to the spray nozzle

Further features, details and advantages of the invention result from the following description of exemplary embodiments with reference to the drawing. Show in it:

1 shows a sectional view of a first embodiment of the product container valve according to the invention,

Pig. 2 shows a sectional view of the valve according to FIG. 1 in open state and

3 and 4 are sectional views of further embodiments of the product container valve

In the first embodiment shown in Figs the product container outlet valve 4 has an annular shape Housing 913 with a central chamber formed therein 914 on. The valve housing 913 is by means of an upwardly directed edge web 915 on one of the product container cover 903 downwardly protruding, annular web 916 attached. It's * us plastic or something like that

-5-

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Material manufactured. The product container lid 905 is made of the same material in this embodiment Accordingly, the valve body can be manufactured using methods such as ultrasonic welding can be connected to the container lid 903 *

A solid valve stem 910 is arranged movably in the longitudinal direction in the central chamber 914. It has an upper or outer cylindrical rope 911> an adjoining inclined surface 912 and below it a seat bushing 917.A sleeve 918 protruding downward from an intermediate piece 6 can be placed in the form of a receiving part in a friction-locked manner on the circumference of the cylindrical shaft part 911 so that it can be placed with its lower edge rests on the inclined surface 912 of the shaft. On the inner surface of the sleeve 918, webs 919 running in the longitudinal direction are formed. Between the ridges 919 formed extending in the longitudinal direction of channels open at their upper ends in a Pr © domestic product & m? Cb> passage 7 of the intermediate piece 6 * At their lower ends through the channels formed between the ridges 919 generally radial openings 920 _f which with the Central chamber 914 of the valve housing 913 la flow connection are foringable. A flexible ring seal 921 is firmly inserted between the valve housing 913 and the product container cover 903. It keeps the inner edge internally

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radial openings 920 closed and thus forms a low-pressure seal. In the embodiment according to 1 and 2, the flexible ring seal 921 sits with its outer edge on a seal seat surface 922, which forms part of the inner wall of the annular web 91 δ on the cover 903. The valve stem 910 and the intermediate piece 6 are arranged by a valve housing 913 and the seat socket 917 ^ Peder 923 upwardly charged.

In the Pig design. 1 and 2 is the product contained directly in the container. This is why it is on the valve body 913 a flow-connected with the Mittelkanaaer 914 Immersion tube 924 attached · When the The intermediate piece 6 moves the valve stem 910 downwards (Pig. 2). The flexible ring seal 921 deformed with the release of the radial openings 920. Grooves 925 are formed in the interior of the valve housing 913 det to allow the flow of product from dip tube 924 through the central casua 914 and the radial openings 920 to those running between the webs 919 in the longitudinal direction Channels and the passage "- to ensure.

With the Afeg & ljs aas product on the container Ie this sin Rueka'iE ^ l ^ ioh must take place. This happens at

λ 0? 8 k ö / y

of the present embodiment of the product outlet valve by means of an air return passage in the form of slots 926 formed in the annular web 916 of the product container lid 903. When the valves are opened, the ambient air is accessed through the central opening 927 of the product container lid 903 and the slots 926 to the interior of the product container ( Pig. 2). This ensures that the pressure is equalized when the product is dispensed from the container. When the valve is closed, the flexible ring seal 921 is in sealing contact with an annular ridge 928 on the inside of the product holder cover 903 (Pig. 1). As a result, the A -. ^ IBufi-.i aea product is avoided from the container if it is held or hung up.

In the embodiments of the shown in Pig * 1 and 2 The product container outlet valve is made of the container lid Plastic or a similar synthetic material. However, the exhaust valve is also for one Product container with a metal lid can be used. The embodiment shown in Pig * 3 is essentially same as that described above and sits on a product container lid 903a made of metal, which has an arched central part 904. Da3 valve body 913a has an outwardly protruding one

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Collar 932 * which rests in an edge 933 of a retaining cap 930 directed from% 7ärta. The cap 930 and the valve housing 913a are attached to the container end by means of a fold 934! 903a held. Ζντί see the retaining cap 930 and the container lid 903a, a seal is formed by means of a second flexible ring seal 931. In the annular collar 932 of the valve housing 913a and in the ring edge 933 of the retaining cap 930, slots 935 and 936 are formed, which provide an air return passage during delivery of the product. Otherwise, the embodiment according to FIG. 3 is designed in the same way as that described at first.

The embodiments described above showed executions for repatriation Ton Xuft »that is Ventilation device inside the valve. this was necessary because the product to be atomized was contained directly in the product container. That invented ™ However, the product outlet valve can also be used in such cases apply where the product Inside the Produktbeliälters in a bubble Ibzw, a Bag is included. In these cases ventilation £! - Openings be formed in the container itself, so that ventilation devices inside the valve “Bleht BQnecessig are.

20982S / B6S7

In the third embodiment shown in FIG of the product outlet valve has the valve housing 913b an outwardly protruding annular collar 932b » by means of which it is through a 3? alz 934b on the laetalldeskel 903b of the product holder is held. Between the Valve housing 9t3b and an arched ϊβίΐ 9Q4b of the container cover 903b is a flexible hanging seal 921b firmly inserted. A connection part 940 of a product bag penetrates the wall of the valve housing 913b and forms a Strörinngsweg for the product from Place the inside of the product bag 941 in the central chimney 914b.

The various Einselteile the improved product container outlet valve may be made of using conventional molding techniques, any suitable or appropriate material boiapielsv _f / eiss plastic, be made, whereby a preisr / SRTE manufacture of the valve is possible.

Although the shape of the product outlet valve for use with flexible product bags does not appear in the above description, there is no air return in dunking, but this can also be used for ^ ^ üftun fioitirichtung present seixi, v / elk in the case where the product bag, tearing in use, in ¥ / irl-NMR tritb.

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Claims (1)

-ίο- Godparents t a η s ρ ru ο h t Product outlet valve for Boppelaeroaolserobaubor, nifc on a part of the Beakels of a producer Valve housing, in which one has a formed in the container uündenae ilitteikawaer with an ai baked by a fire, against the Fed erbelas tiing axially in dex * üittelkaEiraer 1 e? / e £, l ichen Tentilsu-like, fcennaeieimet by the fact that the Yentil- ^ acbaft (910) aa ^ siv iöfc and one from the casing (913) hervorateilendes äuMeres zylindrißcliss I'sil (911) and an interior part (9i2) SSIT her mouth the product ainer * - maintains it ziikehreitden Anrjiiehmuag (91T) which nnl 4 (923} NIFC üineia Marie Ln öieh the spring of the .kiu and at the other end of the aHimeb.rnjmr Wall of the Hxitv \ iZ £ ihM & v (914) graded. BATH Blank page