DE2162762C - Valve for pressurized gas packs - Google Patents

Description

The invention relates to a valve for pressurized gas packs, in which one consists of a material web punched, perforated sealing washer encloses a valve stem and is at a distance from the outer circumference of the "valve stem is pressed against a valve carrier by a clamping edge on the valve housing is.

The known valves of this type have a sealing washer with a circular circumference. The diameter corresponds approximately to the diameter of a cylindrical valve support part, which is matched with an appropriate Curvature merges into an end wall of the valve carrier. The clamping edge of the valve housing that is connected to the valve support by a sheet metal deformation, has such a distance from the cylindrical valve carrier'.eil that the clamping ring surface on the outer edge of the flat end face part of the valve carrier. The valve stem protrudes outward. It has, for example, at the level of the sealing washer a constriction and in the constriction a valve opening that leads to an outwardly open Outlet channel leads in the shaft. An actuating part is placed on the valve stem. A spring presses the shaft to the outside and thereby the sealing washer against the face of the valve carrier, whereby the Valve opening in the shaft is closed. When pressed down, the inner circumference of the sealing washer becomes bent down to reveal the valve opening.

During the filling process, the inner circumference of the sealing washer is pressed down so far that Propellant can also flow in between the shaft and the sealing washer.

The sealing washers are punched from material sheets. It must be between adjacent punched holes a predetermined distance can be maintained to ensure the accuracy of the sealing washer dimensions not by the manufacturing process of the

ίο the neighboring pane is impaired. Overall results there is a considerable drop in this. This problem is of particular concern because it is is a real mass-produced item, in quantities of, for example, 1 million per day from

processed by a manufacturer.

The invention is based on the object of showing a way in which the sealing disk material can be better can be exploited.

This object is achieved according to the invention

solves that the outer circumference of the sealing washer at least partially by one or more secant-like Boundary lines are formed whose smallest distance from the axis of the valve stem is greater than is the clamping edge radius.

Due to the secant-like boundary lines, the light pane is given certain preferential directions smaller dimensions. In these preferred directions, the sealing washers can therefore with a smaller center-to-center distance than before

the web of material are punched out without the prescribed minimum distance between the Slices would have to be reduced in size. By limiting the mentioned smallest distance of the secant-like Boundary lines are ensured

that the function of the sealing washer is not impaired by changing the outer circumference. Because the full material of the sealing washer is available in the clamping area. And for centering The circular segments remaining between the secants are sufficient for the sealing washer in the container lid or corners.

It is particularly useful if the secant-like boundary lines face one another in pairs because then there are strongly pronounced preferred directions.

In a preferred embodiment, the secant-like boundary lines lie on one Square. With the usual cross-grid arrangement of the sealing disks on the raw material, this leads to

Shortening of all center-to-center distances. In addition, a considerable part of the starting circle still remains as a boundary line.

An even greater material saving results if the secant-like boundary lines are on a regular hexagon. The punching pattern then corresponds to a honeycomb arrangement.

According to a further aspect of the invention, the mentioned smallest distance should only be so be much larger than the clamping edge radius, that the deformation of the sealing washer when filling of the propellant, but not during normal operation, between the sealing washer and the valve carrier in the area of the mentioned smallest distance result in passage channels. These are especially with such Valves of importance whose housing has one or more very small through openings. This avoids a very high pressure in the valve during filling of the propellant.

housing arises, which may cause damage or the destruction of the valve.

This impermissible pressure increase is reflected in the present Fall avoided because some of the propellant is fed directly into the gas space via the additional channels of the container.

Embodiments of the invention are explained in more detail below with reference to the drawing.

distance * design d

at ^ that one

_F Tgl a valve of the invention in section, _"d ^g eat sealing cheibelängsderLinie _S ^ - _ß inFig.2ge-%

"pt ^e ? 'ehie top view of a die according to the invention

usable sealing washer, **

Fig. 3, the distribution of the punched out sealants i ₅ divides

Reason of the new gen

^ ngs could end ^ * £ _of geruck be, ais ϊ viewing windows is possible yields so sparnis. . _fa

"Form of the i? ^ichtsche ' ^be This sealing washer 116 has circular segments IW and ^ where the secants onjmem

S ^ secant distance

_like the ^ _arrangement

himself

5 shows the distribution of the sealing disks to be punched out according to FIG. 4 on the raw material.

6 ^{g shows} a section of the valve of FIG. 1 in the actuating position, the sealing disk of which is cut along the line AB in FIG. 2, and

Fig. 7 the same section in the filling point

L actuating part 1 with an outlet 2 is seated on a valve stem 4 provided with a bore 3. This has a constriction 5 and continues Sch in a body 6 on which a valve spring 7 acts. The spring is supported on a valve housing 8 X to which a dip tube 9 is connected at the bottom. The upper part of the valve housing has an expansion 10 which ends in a clamping edge 11. A valve support 12 encompasses the extension 10 with a cylindrical part ⁸ il 13, which has a Krün _r ng 14 jn

an end face 15 merges. Between the valve the clamping edge II is a sealing

ken of the actuating _{ng em> be, de} rd

Fig. 6 J ^ ^erans is oegeben ^aul1. Now, since VennloffnungJ MhJa gegrt ^ ^ _{kt prod,}

under «to trot * uteWr ^ ^ ^ _{nozzle outwards}

the dip tube, α

_des Tjdtjnig ^ the Venn! ^^^^ S Bore 3 ^ middle now occurs : n RingpaIt 22

but also you cn _{Djes ent} ^

Stem and V ^ ntiltrage _system operating part.

with or without regret _propellants with already

8 »che ^ The Emfulten ^ _χ ^ example damontiertem Beutigi g _supply steeply or mc -

made by JaB «^ _hcn ^g _rind , who in aFu H-rere Fullkanale« vorg _filling position through the

^^^, There will always be «.Jullendc

significant pressure stent, deformed. In particular

Circle 19 forms parts of the outer circumference. The remaining

to the

Is DeT smallest distance of secants 20 something GRO spring pressure to the situation _hauIichte

larger than the clamping edge radius R ₃ . ¹⁶ '"^ _n exemplary embodiments are the secants

Fig. 3 shows the distribution of punched out ^{ln n} fj? _{"Nien rade} TJ illustrated. The Bc

Sealing washers 16 on a raw material tape 2. fJ ^ J ^ l _ömen but also be curved. There must be a minimum limit between the individual panes

1 sheet of drawings

Claims (5)

Patent claims: 1. Valve for pressurized gas packs, in which a perforated sealing disk punched out of a material web encloses a valve stem and is pressed against a valve carrier by a clamping edge on the valve housing at a distance from the outer circumference of the valve stem, characterized in that the outer circumference of the sealing disk (16, 116) is formed at least partially by one or more secant-like boundary lines (20, 120), the smallest distance (R ₂ ) of which from the axis of the valve stem is greater than the clamping radius (R ₃ ) . 2. Valve according to claim 1, characterized in that the secant-like boundary lines (20, 120) lie opposite each other in pairs. 3. Valve according to claim 2, characterized in that that the secant-like boundary lines (20) lie on a square. 4. Valve according to claim 2, characterized in that the secant-like boundary lines (120) lie on a regular hexagon. 5. Valve according to one of claims 1 to 4, characterized in that the smallest distance (R.,) is only so much larger than the clamping edge radius (R ₃ ) that the deformation of the sealing washer (16, 116) when Filling in the propellant, but not during normal operation, between the sealing washer and valve support (12) in the area of the smallest foreign country (R.,) result in passage channels (25).