DE1500595A1 - Full cone atomizing nozzle - Google Patents

Description

PATENT LAWYERS

DIPL-ING. CURT WALLACH

DIPL-ING. GÜNTHER KOCH 1500595

DR. TINO HAIBACH

8 MUNICH 2, DEN :>. ..UgUSt 19 ·,: 5

7914 - V / g / Bm

oystema Co. _} Bellv; ood (Illinois), USA

Full cone atomizing nozzle

The invention relates to a full cone atomizing nozzle in which a conical spray is formed, which distributes the liquid substantially evenly over it delivers across the entire spray pattern; In contrast, there are hollow cone spray jets, in the middle of which there is no liquid is located.

Full cone atomizing nozzles of the type noted above have long been manufactured and used in wide areas of industry, and have also been manufactured in large numbers with various sizes, capacities and atomizing angles. Such full-cone atomizing nozzles basically have a DUsenkbodymLt inner chamber, into one end part of which the liquid is introduced and which has an axial outlet opening with a reduced diameter at the other end of the chamber; wings are provided within the chamber and at a substantial distance from the outlet opening, which

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either separately from the nozzle body or together with it formed in one piece so that the liquid flowing through the chamber has a swirling or rotating motion., associated with a controllable amount of turbulence, is impressed, so that the liquid, if .sie from the outlet opening emerges, a conical shape with uniform distribution of the water particles over the entire cross-sectional area of the ray takes away.

In the case of full cone atomizing nozzles, the capacity is of course determined by the area of the outlet opening, with the operating pressure serving as the second factor; To achieve a certain atomization angle and the desired uniformity of the particle distribution in the beam, the relationships between the dimensions of the outlet opening, the shape, the dimensions and the position of the blades as well as the dimensions of the inner planes represent variables that work together and contribute to achieving the desired results. Because full cone atomizing nozzles have found use in such a wide variety of applications, the number of nozzles available has increased steadily to provide nozzles with the desired combination of capacity, angle of atomization and pressure factors to accommodate the majority of applications can. The applicant produces and stores well over 200 different nozzles of this type, which at a liquid pressure of 1.4l kg / cm (20 pounds / square inch) capacities between 0.8 liters (0.1 gallon) and 9120 liters ■ ( 2410 gallons) per minute with an atomization angle between 15 ° and 125 °.

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The wide range of full cone atomizing nozzles available at first glance appears to be sufficient to satisfy most use cases; however, the need does to satisfy three variables, namely the pressure, the capacity and the spray angle, it is practically impossible To provide and keep in stock atomizing nozzles for each different combination of conditions. Accordingly iest it is the main object of the invention to provide full cone atomizing nozzles, to facilitate which special demands are made; a related one The aim of the invention is to improve the mode of operation of full cone atomizing nozzles known properties can be changed in a relatively simple manner in order to reduce the destruction angle of the same while maintaining the same or substantially the same capacity and maintaining the even distribution of the To change liquid within the changed atomization angle.

Further objects of the invention are that the normal full cone atomizing nozzle can be modified in such a way that one can change their atomization angle and that this can be done while maintaining the same the original shape of practically all parts or elements of the Uormal atomizing nozzle can be made. More specific objects of the invention are a method of modification of normal full cone atomizing nozzles,

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with v-ielchem relatively simple deformation ^ - and Beerbe! - tur.gsvorgänge on a limited toilet of the Ncrwal atomizing nozzle make it possible to have a beam with different angles and with good distribution of the liquid within the atomization pattern su generate.

Another and more specific object of the invention is that of; Variable angle of atomization with full cone atomization nozzles and to make it adjustable so as to cope with the development of the operational problems, of the systems in which this nozzle; used v / ground, too to solve; it is a related goal to do so with VoI] cone atomizing nozzles known design.

Other and further objects of the present invention will become apparent from the following description and claims the drawing. · The drawing shows the preferred features as well as the basic ideas of the present training Use invention; it also shows what is currently considered the best way to apply these principles.

In the drawing show:.

1 shows a longitudinal section through a full cone spray nozzle according to the invention;

FlgllA a longitudinal section through an alternative training Nozzle according to the invention;

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Fig. '2 is a otirnar: see which the outlet end of the nozzle

^ i>.> Z · eiieri, the Sc'.ü.itt through the d-.O exit end of the DIi se gäf3 Fig. 1 aiuiliene.i ocirjitt, v / obei nler a modified

Pig. 4 shows a longitudinal section through another full cone spray nozzle according to the invention;

? ig. 5 a section Ι'άη & ε of the line 5-5 of the B ¹ Ig. 4;

Pig. C a 3-view of the one shown in Fig. 4 and 5 Nozzles;

7 shows a longitudinal section through a further training form according to the invention, in which the spray angle of the Full cone Stralils can easily be set;

Fig.TA is a section showing the spray angle adjustment device shows in a position other than in Fig. 7;

FIG. U is an end view of that shown in FIG. Jet;

Flg. 9 and 10 de: · Cross-section or a front view, in which the adjusters are shown on a smaller capacity full cone nozzle.

The invention is available in various forms for the purpose of creating a

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■ representations of full cone atomizing nozzles, which coincide with one another in most of their structural features as well as the basic components of the celt many Janren manufactured and used full cone atomizing nozzles.

Thus, an atomizing nozzle 20 is shown in FIGS. 1 and 2 and an atomizing nozzle 220 is shown in FIGS. 4 to 6, both of which are fixed Have atomization angles; on the other hand, FIGS. 7 to 13 show atomizing nozzles 520 with an adjustable atomizing angle

The nozzle 20 shown in FIGS. 1 and 2 has an elongated nozzle body 21, which over most of its length approximately is cylindrical and equipped at its inlet opening with a hexagonal key flange 21N. The nozzle body 20 has an elongated, cylindrical chamber 22; at the inlet opening orifice of the nozzle body and the Chamber is threaded internally at 22T in this chamber 22 for connection to a source of atomizing agent to allow. At its other end, the exit end, the chamber 22 (as shown at 2 ^) is towards the exit opening 25 rounded or tapered; the outlet opening 25 has a special form and training, ■ the im is described below.

From the outlet end of the nozzle body 21 are a substantial Spaced apart wings 27 are provided in a fixed position within the chamber 22; such wings can according to any known construction, which the liquid as it passes through the chamber 22 in the direction

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A rotary and swirling movement is imposed on the outlet opening 25, "ie shown in FIG. Patent 2,999 6 ^ '° · o ^ez isplays are.

Such wings are accordingly designed as a separate unit, which are fitted into the Kinlaßöffnungsenden end of the chamber 22 against a fixing shoulder 28 by pressing. The wing unit 27 has two oppositely beveled wing parts 27V, which are etv / a semicircular and connected to one another with a triangular surface 29 where the flat side edges of the wings crossed] the wings are also connected by means of a web ^ O ₃ of in is described in detail in the above patents. The two wings 27V described strive to impress a vortex movement on the liquid passing through them; the slits JI formed in the flat side surfaces of the blades 27V on the outlet side of the unit cause, to a limited extent, a reverse swirling movement of the liquid, thus creating turbulence in the flowing liquid.

As the swirling and turbulent liquid moves through the rest of the chamber 22 and through the tapered part 2J> to the opening 25, this turbulent and swirling movement continues,

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-R-

so that the liquid as it passes through the opening 25 is formed into a conical beam of the full cone shape.

In the case of nozzles of this type, the outlet opening 25 normally has the shape of a cylindrical passage, the length of which is different depending on the different nozzle designs; the angle A of the resulting ray is given by the various Possible combinations of the construction factors used for the nozzles are determined. So is the design of such a nozzle, the effective area of the outlet opening as a first basic factor in the determination serve the capacity of the nozzle; of course, the capacity is also determined in part by the pressure of the liquid. Of the The atomization angle is of course also determined by a number of variable factors; the same applies to the Distribution pattern of the liquid particles in the jet. So represents the distance between the wing unit and the The outlet opening is a variable factor and the structure and inclination of the blades are another determining factor Factor. With these predetermined factors, the

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Atomizing angle, however, corresponds to the pressure of the atomizing medium be changed, and it became quite general found that each nozzle of this type has one the distribution of the particles over a certain pressure range remains satisfactory in the beam.

It is clear that after a. commercial model for one Full cone jet developed and used to determine its performance in terms of capacity and its atomization angle has been investigated at different pressures, such a nozzle can be selected and installed with the certainty that under the conditions to which such an installation is exposed. satisfactorily, as highlighted above, are Various nozzle sizes have been developed commercially to accommodate a fairly wide range of choices to suit those in the various Attachments to create converging tax factors. However, it has been found that the commercially available Nozzles do not always correspond to the conditions that can occur in a particular system. Are common the pressure to be used and the capacity to be achieved are the main regulating factors, but in most cases this is also desired atomization angle at this capacity and pressure is also critical. Currently it is mostly only possible that you can find a nozzle among the commercially available nozzles of this type, which all requirements with the exception the desired atomization angle is sufficient; according to the present invention, this problem is addressed by modification solved a known atomizing nozzle, with essentially

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maintain the same capacity at the pressure to be used is while the atomization angle is changed to a desired value and decreased. This is done in accordance with the present Invention achieved by relatively simple changes to the usual nozzles, so that most of the basic components and the more complicated parts of the nozzles can be used in their original or slightly modified form.

In accordance with the present invention, the modifications are made to or in close association with the atomizing orifice 25 to thereby reduce the atomizing angle and effect redistribution of the liquid in the reduced area of the jet. As shown in Fig. 1, has the nozzle body 21 is a central or axial bore 35> having a counter bore for receiving a Mnundstück-insert bush 40 at jj6. This mouthpiece insertion sleeve is fitted into the counterbore Jo with a press fit and its inner surface is designed in such a way that it changes the action of the swirling liquid as it moves through the sleeve 40. As is clear from Figures 1 and 2 of the drawing, the sleeve 40 has annular rows of grooves 41 formed therein which extend parallel to the axis of the sleeve 40; these grooves 4l are arranged at the same distance from one another, so that they have a tooth-like design. The total area of the opening provided in the sleeve 40 is selected so that it is essentially equal to the area of the outlet opening which is used in the conventional nozzle which is used as the basis for

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the amendment used would normally be provided. In this way it is ensured that a capacity is provided is, which is very close to the capacity of the original nozzle comes. ·

As the liquid swirls 4l into and through the sleeve, it moves naturally across and at an acute angle to these grooves ¹ W, so dl · ate:?: Ahnähnliche forming the surfaces ,, at which the v / irbelnde liquid attack, ckr: u serves , the rotary and '-,' irbeV.jev.ogunc the outer parts.? the liquid too. vev: - '<' ro.r * \ urd at the same time to fling parts of the liquid inwards, in the direction of the axis of the case. There:; Vorlnr. ^ C-amep der '.,'Ir'bel aktivl.eit the liquid basically causes - that the liquid with a smaller atomiui; _ ,, 3v.'i? IUel., Belspielsv / eise dera angle AI the Pig · 1> flows out, while the inwardly thrown droplets of the liquid: - ', u serve to maintain a substantially uniform distribution of the liquid over the atomization pattern.

The effect of change achieved by the ileu takes precedence

depth

Zaal, width \ ν \ Δ ϊκζκ of these grooves depends on a smaller;) extent, the effect also depends on the length of these grooves. In the present. Example :: ind sviölf grooves 41 are provided, which are relatively deep and wide; This arrangement is used for nozzles with ν er - " ¹ I, '.";.";:".?) ig large capacity, v / o a considerable change or narrowing of the;: distortion angle c A earthbht?! r.oll. Fin 'Dür: en, with violins di-.j Au .-. Strörming rather .-: cir>: ·>.!. I, 1.-JiTi u-Jio f ^ vlngero!' Π1. (. · Η: ;; ιΓι] vorv.'CMdc't wcrdon;

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It was found that the desired change in the Usually by changing the number of grooves 41, using the same groove width and depth, who can be used.

In Fig. 3 is another embodiment according to the invention shown in which all elements of the structure described above are used in the same relationship; but in this For example, the beam-changing grooves are slightly different around the masks Exit opening arranged around. So is in Fig. 3? a sleeve 140 is used, which is attached in the same manner as described above; in this embodiment but internal grooves l4l are provided which are arranged at an angle with respect to the axis of the sleeve l40. This angular arrangement the grooves 14l can take place in either of the two directions, starting from the parallel arrangement shown in FIG. 1; the extent of the change effect of the grooves is determined by the slope and determines the direction of inclination of the grooves l4l. In this context it is clear that the change in the atomization angle through the grooves 1 $ 1 depends on and is linked to is the angle at which the swirling liquid meets the grooves; there is of course a factor which can be changed in the manufacture of an atomizing nozzle for a selected atomizing angle.

The principles of the present invention can of course also with other versions of full cone atomizing nozzles

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4 to 6, for example, an alternative embodiment of the invention is shown, in which the invention is applied to the basic structure of a spray nozzle shown in US Pat has been used extensively.

Thus, as shown in FIGS. 4-6, the invention is used with a full cone atomizing nozzle 220 which has a through Die body 221 manufactured by casting; in this training according to the invention, the wings 227 are inside molded onto the inner chamber 222 of the nozzle body. In this example, the nozzle body is on its outside at 221T provided with a thread for connection to a supply pipe and the nozzle body has an outlet opening 225, at the end remote from the wings 227.

In the exemplary embodiment according to the invention shown in FIGS. 4 to 6, the outlet opening 225 has hats 24l, which are formed around the edge of the exit opening 225 at equal intervals; these grooves 24l can either during casting or thereafter by milling, reaming or other suitable means. The grooves 241 cause the same as the grooves 4l described above. Although these grooves 24l run parallel to the nozzle axis here, so can but they are also arranged at an angle, as shown in a general manner with respect to FIG became. BADORiGJNAL

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The grooves 24l bring about the desired reduction in the atomization angle A, which is normally obtained from the basic shape of the nozzle, so that in this way a jet is generated which, for example, as in FIG. H, has an angle AI.

In the embodiments of the invention described so far are the ·., which produce the change and reduction in the atomization angle Grooves formed in the edges of the jet exit opening; the atomization angle can also be achieved by grooves, which of the same general nature formed in an annular sequence in an independent part. This independent part is arranged in front of the normal exit opening of a full cone atomizing nozzle in such a way that the Grooves act on the outer or boundary parts of the formed beam.

Thus, in Fig. 1A of the drawing, there is a full cone atomizing nozzle 2OM is shown in part which may be similar in all its details to that shown in FIGS. 1 and 2; but how As shown in Fig.IA, the nozzle 2OM has the normal ones formed in the front, constricted part 22N of the nozzle body Beam exit aperture 25M. The structure provided in the nozzle body and the orifice 25M usually became one produce fairly wide atomization angle; according to the present invention, this can be quite wide at angles of atomization can be decreased by a cap 2OC provided on the nozzle body; the cap 2OC is attached to the nozzle body by screwing it onto the neck 2ON at 2OT. The cap 2OC has in its front

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Wall an exit port 25S. The outlet opening 25S has approximately the same area as the outlet opening 25M, and it has a plurality of carriages 4lto, which in an annular sequence around the edge of the exit port 25S around el in the same general arrangement as shown in Fig. 2 of the drawings. That way will the one exiting from the outlet drank only 25M, proportionately wide angles of atomization in its outer parts by the cap 20C more or less limited, so that these outer parts of the jet inwards against the axis of the exit opening 25M, partly through an inclined, inner annular shoulder 2OS (as shown in Fig. 1A). This ray of revolving texture meets with the different ones Grooves 4IM together so that parts of the jet are directed in droplet form in the direction of the jet axis, how the uniform distribution of the liquid in the atomization pattern is maintained during the atomization angle is reduced to such an extent, which is determined in part by the number and shape of the grooves 4 IM and partly by the distance between the outlet opening 2 ^ S from The end of the main outlet opening 25M is determined 1st.

The cap 2OC thus forms an independent element, which in terms of the shape and number of its teeth 4IM and in terms of the diameter or area of its outlet opening 25S designed in such a way that the reasonable change in the

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is effected by the jet generated by the basic nozzle structure. In the Fig. 1A training shown was originally considered non-adjustable Modification of a full cone atomizing nozzle designed; but as will emerge from the following, this structure can with the same basic shape can also be used to manufacture a full-cone atomizing nozzle, in which the atomizing angle is limited in a limited range by the use of the can be adjusted by the screw connection 2OT given adjustment option.

7-10 the application of the invention to full cone atomizing nozzles is shown in which adjustment devices are provided for changing the atomizing angle normally produced by a basic atomizing nozzle. 7> 7A and 8 show an atomizing nozzle 320 which is produced from the same basic atomizing nozzle shape as shown in FIGS. 1 and 2 of the drawing. The atomizing nozzle 320 has an elongated nozzle body 321 which at its feed end has a flange J521N for a nut wrench and wi further has an inner chamber 322 and a wing unit 327 of the same general shape. The inner chamber 322 ends in an elongated cylindrical atomizing opening 325 * which can be the same as in the basic nozzle shape and which is modified to produce an improved nozzle. The respective inner chamber, wing unit 327 and the atomizing opening 325 will of course produce a full cone jet which has a certain, normally relatively wide, atomizing angle; according to this invention are in connection with the

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Nozzle body 321 means for reducing and changing the atomization angle in almost the same way never provided in the embodiment shown in Pig.IA, but with the further advantage that a considerable range of adjustment of the atomization angle from originally relatively wide angles to others less To achieve this reduction in atomization angle, an elongated sleeve-like cap J> 51 is provided which has threads on its inner surface for cooperating with the threads on the outer surface of nozzle body 521 as shown at 353 A lock nut 351 is provided which is threaded onto the outer surface of nozzle tip 321 for a locking connection between the top or rear of cap 351 so as to maintain the appropriate setting.

At its outer or lower end of the cap 351 has a control-Austrittsoffnsung 355, which is slightly larger than the diameter of the original discharge opening 325; around the inner edges of the outlet opening 355, the cap is provided with an annular series of grooves J> h1 , which have a tooth-like shape and arrangement, which is shown for example in FIGS. 1 and 1A. The cap 351 is arranged so that it can be screwed in the upward or rearward direction as shown in FIG

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Can engage the end of the nozzle body. When the cap 351 is in its fully retracted position shown in FIG. 7, the wxm. normal wide atomization angle and passes through the serrated or grooved outlet opening 355 without significant change in the normal and relatively wide atomization angle generated by the nozzle basic shape. If a decrease in the normal atomization angle is desired, the cap 551 can be screwed with respect to the nozzle 321 in such a way that the serrated or grooved outlet opening 355 extends from the outer or lower end of the basic outlet opening 325 (as shown in FIG. 7A of the drawing ) Will get removed. The various grooves 3 ^ 1 are in such a position that they can be gripped by the rotating jet emerging from the opening 325, so that the interaction of the grooves j4l with the jet causes the droplets from the outer part of the beam inwards' into the main body of the beam. In this way, the final angle of the jet is reduced and the liquid which has interacted with the various regulating grooves j4l is thrown in the opposite direction into the direction of the jet, so as to substantially improve the uniformity of the distribution of the liquid in the atomization pattern.

in
The embodiment shown in FIGS. 7, 7A and 8 is intended for atomizing nozzles with a relatively large capacity. It. however, it should be noted that it may also be desirable to have a reduced atomization angle

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to be obtained with atomizing nozzles of relatively low capacity. Thus, in Figs. 9 and 10, a nozzle 420 is shown which the same more generally! Having properties as the nozzle shown in Fig. 3 7 7A and 3, with the exception, however, that the nozzle of Fig. 9 and 10 has a relatively small capacity. Accordingly, the outlet opening 425 of the same is somewhat smaller than the outlet opening 525 shown in FIG. 7 ) because the jet exiting from the outlet opening 425 is somewhat smaller in circumference and area, the cap 451 is provided with an outlet opening 455 which has a smaller number of grooves 44l has. In both examples, however, the grooves serve to throw parts of the original jet inwards towards the axis of the jet in order to obtain the desired uniformity of the distribution of the droplets in the final atomization pattern.

From the foregoing description it can be seen that the invention provides a new and improved full cone spray nozzle, and it will be further understood that the improved nozzle according to this Invention economical and from ν unchanged basic components of the commercially available full cone atomizing nozzles can be produced.

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Claims (8)

Expectations: 1. Full cone atomizing nozzle, the nozzle body of which has an elongated, has a cylindrical chamber, at one end of which an inlet opening and at the other end one to the axis of the chamber central outlet opening is provided, being close to the inlet opening, inside the chamber, but with substantial At a distance from the outlet opening, fixed vanes are arranged around the liquid flowing through the chamber to impress a swirling, turbulent movement, characterized in that at the outlet opening (25,25M, 225,325,425) a variety of grooves (41,41M, 141,241,341,441) all around the opening is formed, the fiiSgpKÖSSig, parallel next to each other / arranged are to cooperate with the peripheral parts of the rotating liquid in such a way that the atomization angle and the particle distribution can be controlled in the liquid jet. 2. Full cone atomizing nozzle according to claim 1, characterized in that ■ that the diameter of the chamber (22) decreases steadily at one end and is coaxial with the chamber The outlet opening ends and that the grooves (4l, l4l) around the axis of the outlet opening (25,35) in the side wall of the outlet opening are arranged (Fig. 1,2,3) 3 · Full cone atomizing nozzle according to claim 1, characterized in that g e k e η η that the grooves (24l) are formed around the edge of the outlet opening (225) of the nozzle (220) so that with Equally spaced tooth-like parts are created (Fig. 4,5,6). 209822/0051 BATH ORIGINAL 4. Full cone atomizing nozzle according to claim 1, characterized in that an internally threaded cap (200,551,45-1) is screwed onto the nozzle body, which is provided on its end face with a bore whose diameter is greater than that Diameter of the outlet opening (25M, j> 25.425) and that grooves (4lM, 34l, 44l) are formed on the inner edge of the bore. (Pig.IA, 7, 7A, 8,9,10). 5 full cone atomizing nozzle according to claim 4, characterized in that g e ke η η that the cap is adjustable by screwing in the longitudinal direction relative to the nozzle body. 6. Full cone atomizing nozzle according to claim 4, characterized in that the cap (551 * 4-51) between a Voileinge unscrewed a position in which the jet coming from the outlet opening (325) is not influenced and one unscrewed Position is adjustable and that the atomization angle can be steadily reduced. 7 full cone atomizing nozzle according to one of the preceding claims, characterized in that the grooves (4l, 4lM, 24l, 34l, 44l) are arranged parallel to the center line of the outlet opening are. 8. Full cone atomizing nozzle according to one of the preceding claims, characterized 'characterized in that the grooves (l4l) are helical arranged parallel to the center line of the outlet opening . ,,, ",. 209 822/0051,. Blank page