DE1571183A1 - Nozzle for dispensing aerosols - Google Patents

Description

The invention relates to aerosol spray devices and is particularly directed to one Nozzle for aerosol spray cans, with the material in a fan-shaped spray jet with oval or generally elliptical cough, the main axis of which is set upward from the rifle leaves" .

Aerosol spray cans with paints, varnishes, enamel and the like as well as with other materials such as cosmetics, insecticides, lubricants, medicaments and the like as contents are sold in large quantities. These cans contain what is to be dispensed Material, a liquefied propellant gas, for example

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Dichlorodifluoromethane and usually a solvent to reduce the consistency of the material to a consistency suitable for spraying. The material is sold through a dispensing valve on the top 'delivered to the Büehs.e, which is connected to a suction pipe is, - which is up to the vicinity of the Büchsenbo-. dens leads * The dispensing or spray valve is carried out ι ^ an actuator controlled in which a dispensing or spray nozzle is mounted. The actuation device can be operated by the pinger of the user actuate and the dispensing or spray nozzle is usually in a round opening from which the material is dispensed in a conical spray which is usually a generally circular! Cough generated. For convenient and convenient spraying, especially when the material level is in As the canister decreases, it is desirable to keep the spray canister in a position that is not very much differs from the ßenkreohten. When spraying surface coating materials, e.g. parben, Lacquers, enamels and the like, lubricants, protective compounds and certain cosmetics and .Medication is that produced by the usual nozzles conical spray is unusable because it creates an excessive amount of overspray. Of the the can or other spray container operating

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Workers must have some experience in order "to achieve a uniform coating on a large surface and; the Sprühbüchse must stand of 25 in waste ^1-50 cm from the article to be coated Oberflächeι be kept because the cone angle is quite small," said However, if the spray can is held too close, layers of material that are too thick will be deposited and the material will drip or run off.

The invention has

set the task, a

to create an improved nozzle, whatever that is to be sprayed

Material with approximately the same quantities (for example in g / min.) as usual aero oil spray nozzles a.Ts- · there, however, the spray is fan-shaped with a small angle in a plane and a substantially greater angle than the normal angle of conventional conical spray jets in a plane perpendicular to the first level is formed · That upon impact \ of the spray jet on the surface to be coated The pattern formed is oval or generally elliptical Spray over a surface to be coated, then a much larger area than with a conventional conical spray and the density of the spray over the width of the

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The tape that is sprayed is more uniform than it is usually made with a conventional conical Can achieve spray jet. It is also possible, at intervals of the order of 15 cm in the ^ Compared to spray 25-30 cm, the usual

Spray cans are required. It follows that, compared to the usual spray cans, air currents form a much less problem, the accuracy of the spray jet is increased, the extent overspray is considerably reduced, the utilization of the material is increased and even unskilled workers can perform such work. In a particularly preferred embodiment of the nozzle according to the invention, the long axis is of the spray pattern adjustable with respect to the axis of the aerosol can.

Furthermore, tests have shown that, if necessary, the amount of propellant is reduced and the amount of the solvent can be increased contrary to common practice, so that the cost of the content the rifle can be reduced without impairing its quality. One can if necessary also create improved packing by measuring the amount of material to be sprayed in the

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Compared to the proportion of the propellant gas increased. This results in a pack that is more for a given 'size . contains material to be sprayed, which is of great interest to the buyer. All of these "factors contribute to a more satisfactory one."

• ■ ι

and more effective use of aerosol materials in cans "in" which the I

• Nozzles are attached, compared to bushes with! common nozzles that have a common, round spray pattern [ deliver. ~ =

The invention thus starts from a nozzle for dispensing of aerosols in a spray from an aerosol can with a discharge valve and an actuator therefor, and is characterized in that _r expires the nozzle bore at the outer end in an end wall of the nozzle opening to the in its neighborhood V-shaped outer surface of the nozzle and the 'V-lOrm of this surface is formed by beveled, substantially perpendicular to each other walls, which are cut by the circular nozzle opening in such a way that the outer edge of the nozzle opening has the general shape two in mutually substantially perpendicular

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Half-ellipses lying flat.

Preferably, the end wall of the nozzle. Bore of two opposite to each other at substantially 90 ° inclined surfaces and one which is essentially perpendicular to the axis of the nozzle bore and intersects the inclined surfaces narrow floor surface, the lines of intersection of the inclined surfaces with the floor surface ^ before they run parallel to each other and parallel to the apex of the V-shaped outer surface of the nozzle.

The nozzle preferably has a neck containing the nozzle bore, which in "a channel of the loading: ätigungsvorriöhtung is used in such a way that the nozzle bore with the outlet channel of the actuating device comes in contact. ·>

In a further embodiment of the invention, a splash sits expediently at the outer end of the neck and the nozzle ] is in the channel. this flange rotatable. The flange on the nozzle throat. is preferably rectangular and is perpendicular to the Acks of the Düssabohrunf, the main axis of the Plarisoiieo being perpendicular to the Sohaitel

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V-shaped outer surface of the nozzle runs. .

The V-shaped outer surface of the nozzle is there / at ' advantageous on the. External surface of the flange attached and has the shape of a V-shaped rib on that surface.

The width of the V-shaped rib is advantageously greater than the diameter of the nozzle opening, the diameter of which is in turn smaller than the flat bottom part of the end wall of the nozzle bore.

The drawings show in

1 shows a spray can or can with a nozzle,

according to the present invention, where also "' the generated, essentially oval odes |

• I

elliptical M ISTJ illustrated _u ster,

2 shows an enlarged section through a loading ^; actuating device with a nozzle according to the invention, wherein a rope of the ^{dispensing valve u} aer the upper rope of the aerosol can or can can be seen;

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-Pig. 3 a top view of the activation voi · -! direction according to figure 2;

Pig. 4 is an enlarged perspective view showing the outer surface of the nozzle j

Pig «5 is a rear view of the nozzle;

Pig «6 ■ 'i ■
and 7 a horizontal or vertical splitting through the nozzle essentially along the lines 6-6 and 7-7 of FIG.

I ·

and in · .

Pig. β is a perspective, enlarged partial view to reproduce the inside of the nozzle.

According to Figures 1, 2 and 5 of the drawings is the Nozzle according to the invention in particular for a customary aerosol can or can 10 * The upper end 11 of the Büohse 10 has a reduced diameter and has an opening which is closed by a conventional closure cap 15 which has a Outlet valve body 16 carries the usual

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Can be type of construction. Bti of the reproduced au-

'- Γ leitungaform is the access valve with a Actuator; 1?. By mistake, wtloht tight * but is removably seated on the exterior of the valve body 16. The operating device 17 has an actuating wing 18 and a loading

Aktivüngsstift 19 on,

weloher on a valve

cone 20 engages with a valve seat 21 seals within the valve body 16. The yen * -tilkörpar is aefeatigt on the closure cap 15, for example by flanging, and also with it a riser pipe 23 connected »welohea is preferably up to one, Stifco of the bottom of the box or Can extends, as can be seen from Figure T. '

If the user presses on the wing 18, as shown in FIG. 1, the fifth 19 near the bottom _v , moves and pushes again the cone 20 from its seat 21, so that the pressure is on it Contents of the can up you ^ oh that. Riser pipe 23,

around the valve cone 20 and aut

the top of the

Valve body 16 in the tree inside, the setäti _:. gungivorriohtung flow kani ^ i 'Wilober surrounds the vss- f narrow! rope 24 of the valve body. The contents of this tree pass through a box or can

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IXise 25 from "which has a cylindrical neck 26" which is inserted in a cylindrical channel 27 in The actuating device sits »which way in turn - with the tree within the actuating device communicates.

According to the present invention, the nozzle is designed so that it emits a finely distributed "sufficiently atomized" fan-shaped spray jet with a narrow, enclosed angle of, for example, 5 ° ^{-7 V 2} ° Ia of a plane and a relatively wide 'enclosed angle of, for example 20 ° to 25 ° in a plane perpendicular to the first plane ·! The »takes place at the before! .legend invention duroii construction of the nozzle, as it can be seen from Figures 4 to 8 as Execution

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As can be seen from these figures, the Düte 25 before »ugswei ·· ai · a separate Xun» t- • tofiicöaper (linear polyethylene β.B.) with a

i '. . ■■■■ ■ ■ .i; - ·.

hollow, cylindrical neck 26, "" loher under light PreleitJ in dsm svlindtisohen KiUaI 27 siiist. Above the neck part of the $ XiM »« is conical · Rope 2Θ, the old a corresponding conical rope

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29 is in engagement in the actuating device 17, above the conical cable 28 there is a short "cylindrical" part 30 and a rectangular surface 31 * If the nozzle is inserted, then the edges of the rectangular flange 31 can be detected with the fingernail and the nozzle can be easily rotated with respect to the actuator and removed from it if necessary The inner end of the neck 26 is beveled at 32 to facilitate insertion of the neck 26 into the channel 27. The nozzle is as will be further explained below is designed so that the long axis of the spray mast

the long axis of the rectangular flange> 1 coincides. Thus, by rotating the. Nozzle the axis of the cough into the one for the one to be acted upon Put work in the most favorable position.

In order to create the desired pattern of the spray emitter and to ensure correct atomization of the material, the nozzle is provided with a circular cylindrical nozzle bore 33 which extends through the neck 26 and ends in an end wall which is inclined in the opposite direction 34 is formed, which are substantially perpendicular to one another. This Sohrägfläohin töhneiden a narrow, flat floor surface 35, dit ββnkrGoht "

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to the axis of the circular cylindrical nozzle bore 33 , is arranged. The cutting lines 36 are perpendicular to the long or major axis of the fan-shaped Spray jet and to the 'long axis of the flange 31. A circular-cylindrical nozzle opening 37' their Diameter is slightly less than the width of the bottom surface 35, extends through the end surface 31 and runs coaxially to the nozzle bore 33 · The nozzle opening 37 extends through the center 'a V-shaped rib 39 on the outside of the flange 31 »which is perpendicular to the long axis of the Flange and thus the spray pattern runs. The inclined outer side walls 40 of the rib 39 are standing , preferably at right angles to each other. It should also be noted that the width of the rib base in the middle part is preferably larger than the diameter of the nozzle opening 37, so that the nozzle

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Opening 37 intersects the beveled side walls 40 instead of the surface of the flange 31. Of the Section of the cylindrical opening 37 with the inclined side walls 40, which are at about 45 ° to the Run axis of the opening 37, leads to the fact that the outer edge 41 of the opening has the shape of 2 semi-ellipses assumes that lie in mutually perpendicular planes. The vertex of the rib 39 bites the reproduced shape of the configuration is arched »

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It is just a matter of one thing the]? form and the expediency "in producing» the The shape of the rib in areas that are at a distance from the opening 37 is unimportant as to the mode of operation the nozzle "concerns>

The shape of the ropes just described leads to the desired fan-shaped, finely distributed spray jet. The nozzle bore 33 within the nozzle forms an expansion chamber in addition to the expansion chambers within the actuating device around the valve body, where a rope of the liquefied propellant gas changes from the liquid state to the gaseous state and partially atomizes the material to be sprayed. The material flows through the nozzle bore 33 at high speed and hits the inclined surfaces 34 and the bottom surface 35t where turbulence is generated in the flow and the material also enters the finely divided form. is broken up. The surfaces 34 lead to the fact that the spray assumes its fan shape because, as. can be seen from Figures 2 and 7, their inclination is chosen such that it the material upwards. · And deflect below instead of sideways. The shape of the exit end of the opening 37 corresponds to the amount ex & lt. zux generation of the desired tubular shape

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Discharge together. You oblique, elliptical |

Edges 41 of the opening allow the spray pattern

■ ■ '■ ^; - ■! in directions parallel to the long axis 4ee Planeehes

31 and diverge perpendicular to the axis of the lip 39 and narrow the exit angle of the material parallel to the rib 39.

» '''.R ■. ■ ■ ■

In a preferred embodiment of the invention, the nozzle 25 has the following dimensions}

length (dimension A

according to Figure 7) 4.3-4.4 mm

i 1

Nozzle diameter:

bore 33 j '1.27 - t _p 2 $ - " _t ]" vm

. Width of the floor area 35 0.58-0.5 mm

Distance from the floor surface.
35 to the surface of the flange 31 (dimension B according to
Figure 7)! 0.20 - * 0.23 mm

'' Durohmtsser of the nozzle opening

now ^ 37 j $ 0.45 0.005

(Note: It is important to \

' that the hole for that
DUsenöifnung 37 round, exact ^; Atntriert and free of jars
u.Vereohmelzungen- iaV)

Height of hip 39 in the middle 0.38-0.40 mm

Width of the hip base at,

Cut with the KLanech 31 0.76 - 0.81 mm

Xrummungeradiue of the parting

the Hipp 39 '6.35 mm.

The nozzle gives a dimension when spraying noraaler? arbt under the usual pressure in dfr

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Of the order of 5 kg / cm inside the can or Can a fan-shaped spray jet, which is at a distance of about 152 mm to an oval or elliptical Pattern leads, in which the relatively dense middle area of the huster at 152 mm approx. 50 - 64 mm long and about 12-19 mm wide. The exit angles are approx. 20 ° to 25 ° in one direction and. 5 ° to 7 1/2 ° in the other direction. The density of the pattern is over the relatively thick area remarkably even and a line perpendicular to the main axis of the pattern gives one excellent coverage on tape 50mm to 64mm wide with remarkably little Over-spraying. ”In contrast, a standard aerosol spray nozzle or can delivers a conical spray jet with a round pattern in which the relatively dense central area has a diameter of approx. 38 mm at a spray distance of 300 mm and the pattern has considerable overspray and shows a remarkable unevenness * At a distance of approximately 152 mm, the center is the sprayed pattern too dense and for good results Diameter of the pattern too small "

Because of the improved mechanical atomization

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Inside the nozzle, a lower percentage of liquefied propellant gas is required in cans or cans in which the nozzle according to the invention is used, in contrast to cans or cans equipped with conventional nozzles. The overspray is greatly reduced. The narrow _t elongated patterns with improved uniformity make it possible for even an unskilled worker to achieve excellent results. The short spray distance reduces exposure to air currents and improves spray accuracy. The adjustable nozzle makes the cans or cans easy to handle and efficient In addition, if necessary, the Pächers spray nozzle can easily be removed for cleaning or to replace it with a nozzle that has a conventional, round opening in order to generate a conventional, circular-conical spray jet * '

; Claims

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Claims (7)

4- claims t 1. Nozzle for the delivery of aerosols in a fan-like spray jet from an ·, Aelrosol can or can with an outlet valve and an actuator for this, d a. marked by that the nozzle bore (33), at the outer end in an end wall (34 »35) runs out, from which the nozzle opening (37) to that in its vicinity is V-shaped formed outer surface (39) of the nozzle; (25) and the V-3? Shape of this surface by inclined, walls (40) which are substantially perpendicular to one another and which are formed by the circular Nozzle opening (37) are cut such that the outer edge (41) of the nozzle opening (37) is the general Assumes the shape of two semi-ellipses lying in planes essentially perpendicular to one another. 2. Nozzle according to claim 1, characterized in that that the end wall of the nozzle bore (33) of two opposite to each other under substantially Inclined surfaces (34) inclined at 90 ° and one im substantially perpendicular to the axis of the DUsenbohrung (33) 'and intersecting the inclined surfaces (34) narrow bottom surface (35) is formed and the Sch & itt- t UMU documents (Art 7 S l Abs. ■ / No. I sentence 3 of the amendment «g« i _{s of} 4.9.19fiv, 009Ö48 / U51 BADORlQiNAL lines of the Sohrägflachen (34) with the Bodenfläohe (35) parallel to each other and parallel to the apex of the V-shaped outer surface (39) of the nozzle (25) get lost. 3 · Nozzle according to claim 1 or 2, because it is known that the nozzle (25) has a the neck (26) containing the nozzle bore (33). has, which is in a channel (27) of the actuating device 'Direction (17) is used in such a way that the nozzle bore (33) with the outlet channel (27) of the actuating device (17) comes in contact * 4. Nozzle according to claim 3i daduroh characterized in that a flange (31) sits at the outer end of the neck (26) and the nozzle (25) is in the channel (27) of the actuating device (17). 'is rotatable by means of this flange (31). 5 * Nozzle according to claim 4, characterized by the fact that the flange (31) on the Düuenhale (26) is rectangular and perpendicular to the axis .der Düaenbohrung (33), the main axis being the Planseheθ (31) transversely to the apex of the V-shaped outer surface (39) of the nozzle · (25) vtrlüuft. ./3 009848 / U51 T 5 711 ^ 6. Nozzle according to claim 5 _f, characterized in that the V-shaped outer surface of the nozzle (25) is on the outer surface of the Planseheε (31) and the Porm of a V-shaped lip (59) on this Has surface. 7. Nozzle according to one or more of claims 2-6, characterized in that the width of the V-shaped rib (39) is greater than the diameter the DUsenöffung (37) is whose Durohmesser .in turn smaller than the width of the flat bottom part (35) the end wall of the nozzle bore (33), 008848 / U51 BATH ORIGINAL to Blank page