DE1949449C

DE1949449C - Swirl nozzle for evenly atomizing liquids

Info

Publication number: DE1949449C
Authority: DE
Inventors: Kajetan 7141 Möglingen Leitner
Original assignee: Lechler Apparatebau Kg, 7000 Stuttgart
Publication date: 1972-08-31

Description

Die Parameter für die Beeinflussung der BeaufschkgungsverteUung durch den Drallkörper sind·
Die Tiefe der Drallkanäle durch paralleles Verschieben der Begrenzungsebene vor oder hinter die Rotationsachse des Drallkörpers
seitliche Versetzung der Durchdringung der Drallkanal an der Stirnfläche des Drallkörpers gegenüber dem Radius,
die Breite der ürallkanale,
die Höhe des Drallkörpers.The parameters for influencing the load distribution by the swirl body are
The depth of the swirl channels by parallel shifting of the boundary plane in front of or behind the axis of rotation of the swirl body
lateral offset of the penetration of the swirl channel on the face of the swirl body compared to the radius,
the width of the ürallkanal,
the height of the swirl body.

Durch die unterschiediiche Durchdringung der Drallkanäle an den beiden Stirnflächen der Drallkörper ergeben sich unterschiedliche Ein- bzw. Austrittsquerschnitte für die Flüssigkeit. Diese Unterschiede können dadurch ausgeglichen werden, daß die Tiefe der Drallkanäle von der radialen zur gegenüberliegenden Durchdringungsseite kontinuierlich ver-Due to the different penetration of the swirl channels on the two end faces of the swirl body there are different inlet and outlet cross-sections for the liquid. Those differences can be compensated by the fact that the depth of the swirl channels from the radial to the opposite Penetration side continuously

größen wird. Der Querschnittsausgleich kann auch durch konische Ausbildung des DraUkörpers erfolgen. Dies schränkt jedoch die unveränderte Verwendbarkeit des Drallkörpers für Vollkegel- und Hohlkegelzerstäubung ein. Die Beaufschlagungsverteilung kann auch durch entsprechende Ausbildung des Düsendrallraumes beeinflußt werden.sizes will. The cross-sectional adjustment can also done by conical design of the DraUkörpers. However, this restricts the unchanged usability of the swirl body for full-cone and hollow-cone atomization one. The distribution of the action can also be achieved by appropriately designing the nozzle swirl space to be influenced.

Die unterschiedliche Durchdringung der Drallkanäle an den Stirnflächen des Drallkörpers gibt die Möglichkeit zur Erzeugung einer Hohlkegelzerstäubung dadurch, daß die Stirnfläche des Drallkörpers mit radialer Durchdringung der Drallkanäle dem Flüssigkeitszulauf zugekehrt in den Düsenkörper eingebaut wird. Diese Mehrzweckverwendungsmöglichkeit bedeutet vor allem im Hinblick auf die bei Düsen erforderlichen Leistungsbaureihen eine wesentliche Verbesserung der Kostensituation.The different penetration of the swirl channels on the end faces of the swirl body gives the Possibility of generating a hollow cone atomization by the fact that the end face of the swirl body built into the nozzle body with radial penetration of the swirl channels facing the liquid inlet will. This multi-purpose use means mainly with regard to the nozzle required performance series a significant improvement in the cost situation.

1 sheet of drawings

Claims

1,948,449

which the one end face of the swirl body essentially

_{Claims:, IcheE on a} radius and the other end face 1. Swirl nozzle for uniform atomization penetrates essentially on a secant and of liquids optionally in the form of one that the depth of each swirl channel along the entire length

Hollow cone or a full cone with a twist 5 through which the longitudinal axis contains, transversely to the

body in the form of a cylinder or conical radius of the penetration of one end face

butt with swirl channels, thereby delimiting the marked plane.

ζ e i c h η e t that each swirl channel in a wind- The aforementioned "representational features are Although lying obliquely to the longitudinal axis of the swirl nozzle from a swirl nozzle for full cone atomization Level is arranged, which is the one end face of the ίο by the German patent application W 1424, class Swirl body essentially on a radius 61a, has become known per se, The invention is and the other end face essentially on the other hand, however, to be seen in the fact that the twist liner Secant penetrates, and that the deep body of the known swirl nozzle by incorporation with each swirl channel along its entire length due to the interchanged end faces for hollow cone atomization containing the longitudinal axis, transversely to the radius of FIG. 15 can be used.

Penetration of one end face. The inventive design of the swirl body

Level is limited. 'results in a simple way not only a uniform

2. Swirl nozzle according to claim 1, characterized in that the atomization cone is acted upon by a indicates that the end face of the swirl body has a large pressure area, but it can be used with it with radial penetration of the swirl channels of the ao also all desired scattering angles from 15 to over The nozzle orifice is facing, thereby achieving a full 120 °. Since the swirl body according to the invention cone loading is achieved. be provided with more than two swirl channels

3. Swirl nozzle according to claims 1 and 2, can, can be a very uniform Beaüfschlada characterized in that the end face of the supply distribution of the atomization cone can be achieved.
Wire body with radial penetration of the 35 Die A b b. 1 to 4 show the principle of the invention swirl channels facing the liquid inlet, using the example of a swirl nozzle with four swirl channels in the swirl body, whereby a hollow cone is applied to the swirl body.

will. A b b. 1 shows a nozzle with nozzle body 3 and 3

inserted swirl body 1 in section, the

30 swirl body is installed in such a way that a full cone atomization occurs results;

The invention relates to a swirl nozzle. Fig. 2 showed a swirl body 1 with one of the

uniform atomization of liquids - four channels 2 in side view;
wise in the form of a hollow cone or a full A b b. 3 shows the end face 1 of a swirl body,

kegeis with a swirl body in the form of a cylinder 35 which on four radii from the swirl channels 2 through- or truncated cones with swirl channels. is penetrated;

With such nozzles previously had to be for hollow or A b b. 4 shows the opposite end face 3

Full cone atomization different swirl bodies, a swirl body, which is penetrated on four secants by the mostly also in different nozzle housings, swirl channels 2,
be used. In contrast to the hollow cone 40 The mode of operation of the atomization shown in Fig. 1 is the generation of a satisfactory swirl nozzle is as follows:

Full cone atomization is relatively difficult to apply pressure to the nozzle from direction A

especially with regard to a uniform surface flowing liquid flows with an increase in its impact of the atomization cone. Flow velocity in the circumference of the swirl

To solve this problem, different 45 body 1 lying channels 2 are a. Became known through the oblique designs. According to the German position of the swirl channels 2 to the axis of rotation of the swirl patent specification 448 008 you have z. B. swirl body, like body, the liquid particles are used for the hollow cone atomization, deflected axial inflow direction and are provided with a central bore so as to fill the oblique flow direction as a concentric gerich hollow cone more or less. E ^; ne 50 tete partial flows of preferably rectangular transverse uniform distribution can only be cut into the swirl space. Reach the pressure area limited there by the Abeins. The swirl caused by the steering is the greater, the further. This consists in the wescnt swirl body are removed. The swirl components borrowed from two inclined guide surfaces, which are interrupted by recesses in the flow that forms in the swirl space. This swirl body has the disadvantage, therefore, towards the center continuously, that the division into two areas is reduced to zero, so that this emerging impact emerges. In order to keep this unevenness in the speed distribution an even and fully tolerable limit, a relatively small jet is created from the nozzle mouth 4 between the cone impact at the exit of the atomizing nozzle orifice and the swirl body,
large swirl space required. The application can in the context of the invention is based on the task of sinen training through various structural measures to find swirl body, which can be influenced by a large pressure on the swirl body, so that either area for a uniform full cone as the inner or outer zones of the nozzle jet hollow cone atomization is suitable. For the purpose of the 63 stronger or weaker pressures. According to the invention, this problem is present; B. be of importance when several that each spray a swirl channel in a skewed to the longitudinal nozzle in the association, as in plant protection, axis of the swirl nozzle lying plane is arranged, and the individual nozzle jets overlap.