DE1957298A1 - Axial inclination apparatus - Google Patents

Description

Palen'tanvvaff _fe Dipl.-Ing. A. Spalthoff '* Nov. 1968

Essen, Feimonsfr. 31
Telephone 772003

17 803 B.

SOCIESE ANOMKE DES ETABLISSEMENTS NEW, 4-7, Rue Fourier, LILLE (North)! France

Axial inclination apparatus

The invention relates to anaa.Axialneigungsapparat, in particular for turbo machine! *.

It is well known that, in order to vary the characteristic curves of turbo-machines rotating at constant speed, JN ι egunga apparatus -use-ii * which cause a gate rotation of the totality of the fluid flow threads entering the machine, with this supply station from the the same calibration as that of the wheel of the machine, in which case the pressure supplied is reduced; But it can also be from the opposite direction, in which case the brackets supplied then rise. Di 'at: tönigua ^ äjap'parate are manclmsil se designed that they ensure a complete closing of the inlet ££ mx & g of the machine.

009849/1190 '

BM> ORlQl ^ AU _{ν :, Λ} "

The invention now relates to an axial inclination apparatus, "in which the axes of rotation of the blades of the inclination apparatus in and the same plane and converge at a common point, the plane containing them being perpendicular to Is the axis of flow of the fluid through the inclination apparatus.

One inclination apparatus according to the invention is in Pig. 4 ₅ which shows an end view of such a tilting apparatus and in the Pig. 3, 5 and 6, which side views correspond to three different positions of the inclinator blades. Pig. 2 is a half section through Pig. 1 and Pig. Fig. 1 is a view of a detailed embodiment for such a tilting apparatus.

This inclination apparatus includes, as in the Pig. 1 and 2 shown a cylindrical casing ring 1, which may be plansche can carry to increase its rigidity and to allow connection to the intake of a fan that is behind an upstream jacket or suction funnel is arranged. .

Diesae jacket ring carries a certain number of bearing bodies 4, in which the axes 5 are pivotable, on which flaps or slides 6 are attached, the number of these arrangements 4, 5 and 6 depending on the exact role given to the Ne: Lgungsapparat; In general, at least 4 flaps or sliders 6 are provided and mostly the flaps 6 are combined in such a way that they completely cover the pluiddui. close when they have returned to the same level. Their arrangement is not directly Beziehun., Which require that provided with de ν invention that the flap may be provided in-umr large numbers and that they can exist aas a .. ■ simple planning sheet or a λ- ¹ center bulged or reinforced sheet metal or from two sheets, in such a way that a hollow profile is formed; It is also possible to manufacture it by casting from any material, in such a way that a thick, full ... profile is formed.

BATH

According to the invention, it is essential that the apparatus has a jacket ring 3 auJeist, which can move freely around the jacket ring 1 can, wherein the contact between the outer surfaces of the 'jacket ring 1 and the inner surface of the jacket ring 3 or between the outer surface of the jacket ring 1 and the inner surface of the inwardly falling edges of the jacket ring 3 can take place, wherein optionally roller, ball or needle devices, etc. can be interposed. It is essential that the jacket ring 3 without strong friction on the jacket ring 1 both can move in rotation as in axial translation.

The jacket ring 3 carries as many arc cutouts 7 as the inclination device has blades. These arch cutouts 7 can be provided in the surface of the jacket ring 3 itself or formed from parts of a & estalt that itself Cutouts as shown at 7, wear and firmly connected to the jacket ring 3, the other openings with dimensions larger than that of the cutouts 7 carries.

The axes 5, on which the flaps 6 are attached, also carry Cams 8 that are keyed onto them and take the shape of the cutout 7.

The cutouts 7 are defined by two parts of concentric circles, the space between these circle parts on the ends at both ends by two other parts of a circle, the diameter of which is equal to the difference in the radii of the previous one Circles is. The cams 8 have an analogous interpretation that corresponding arcs are much shorter. Yon the construction hence there is a ^ eriqgs SpejLl between the outer surfaces the cams and the inner surfaces of the arch cutouts, around the shift dex _ 3ken in the arched sections to allow softer friction.

In the pig. 1 and 2 are only local to a clear illustration a single flap shown.

009849/11 *

BATH ORIGINAL

The cams 8 can be or rigid. be stiff or from a slightly consist of elastic material in order to bring about an adjustment or an elimination of the game or they can be made of there are several slightly mutually movable parts, in order to fulfill this puncture of the backlash. The method of puncturing the device is as follows:

If a force is exerted on the casing ring 3 in such a way that the casing ring 1 is set in rotation, the arched sections exercise 7 exerts a torque on the cams 8, which of course cause the axes 5 and the flaps 6 to rotate. The reaction the cam 8 on the arcuate cutouts 7 causes the jacket ring 3 to move in translation with respect to the jacket ring 1 to run. By acting on the jacket ring 3, all the blades are rotated at the same time of the inclination apparatus. This effect can for example via.se by means of a lever e.g. 9, which sits firmly on the axis 5 of one of the flaps and carries an arched cutout 10, in which a pin 11 firmly connected to the jacket ring 3 can slide, the role of this pin being to exert a force that moves the casing ring 3 contributes and prevents jamming between Nooke 8 and the Plächai of the arch cutout 7.

The orientation given to the flaps 6 with respect to the cams 8 depends on the goal sought. For example, there is in the Pig. 1 and 2 the flap in the plane perpendicular to the axis of the inclination device when the Nooke 8 is in the middle Position is located in the arc section 7, i.e. if you have the Sheath ring 3 moves in relation to the position that it is in Pig. 1 occupies, with the flap trying in the direction of flow of the Pluids face up by gyrating in one direction or the other corresponding to the direction of rotation of the jacket ring 3 causes.

⁹⁰

On the other hand, according to FIGS. 3, 4, 5 and 6, the flap is located in a plane that goes through the axis of the inclination apparatus, when the cam 8 is in a central position in the arched cutout 7, as in Pig. 5 shown, "is located; it consists the tendency that a pre-rotation occurs in one direction or the other when acting on the lever 9 to the Bring jacket ring 3 to the shift.

chooses the case of a screw fan, for example one often wedges the flaps so that one of one Forced rotation can change into negative rotation when passing through the fully open position, while mostly one for a centrifugal fan, the flap is arranged in such a way that one goes from fully closing to fully opening passes by running through negative rotations, i.e. rotations in the same direction as that of the centrifugal wheel are.

The advantages compared to the accessory device according to the invention known entails are the following?

No lever and swing arm devices are provided, which would make multiple joint training courses necessary are often accomplished by means of ball joints, which are known to require a very high mechanical precision.

The diametrical space requirement of the device is very small, since the jacket ring 3 can be arranged very close to the jacket ring 1 and the cams 8 can only protrude slightly beyond the jacket ring 3.

Due to the simple manufacturing process, white cheese. 3is; such killing apparatus - Tsrtoöiitai ^ iagilg low in manufacturing cost lie.

109849/1190 Original bathroom

Claims (5)

-6 claims 1./Axial inclination device for generating a pre-rotation of the whole the fluid flow ST entering a turbomachine threads, for modifying power and pressure, characterized by sheep, (6) which can be pivoted about converging axes are located in a plane perpendicular to the axis of the inclination apparatus are located and are rotatably mounted in a wall of a cylindrical element (1) for the passage of the eluid, wherein each blade (6) is firmly connected to an elongated slide (8), which is so in a curved hat or an arched section (7) slides, which is recessed in a cylindrical casing ring (3), which is able to move around this to rotate the cylindrical element (1) and to move it to it, that. when this casing ring (3) rotates relative to one another, the slide (8) is oriented in the direction of the arcuate cutout (7) by he takes the corresponding shovel (6) in rotation. 2. Axialneigungsapparat according to claim 1, characterized in that that the jacket ring (3) is on the cylindrical element (1) rotates and opposite this with the interposition of the displacements facilitating devices such as balls, rollers and needle bearing needles is displaceable. 3. lifting apparatus according to claim 1 or 2, characterized in that .that each blade (6) with the slide (8) with the interposition an axle (5) which rotates in a bearing (4) which is attached to the wall of the cylindrical element (1) is attached. 4. Axial inclination apparatus according to one of the preceding claims, characterized in that each outer surface (7) essentially! s, <3 & the perm of a fraction of a circle; mgs has, ■ 0 09849/1190 BAD OBiGiNAL 5. Axialneigungsapparat according to claim 4 »characterized by an operating lever (9), one of its ends on a the slide (8) is attached and in'der on the jacket ring (3) Center (11) of this circular ring section is articulated. 009849/11 ο 0 Blank page