DE1628286A1 - Wing suspension for acial blower - Google Patents

Description

DIPLINa FRANZ VJLLINGER

Applicant: Mr. Ing. Bugen "'S ^ n Z * -, Ί? Ί ^'Simian; ta

"Blade suspension for axial fans":

The invention extends to a wing suspension Axial fans, especially-for large flow rates for ventilation Clay cooling towers or the like .. · It "is already known such Build the blower from a motor-driven hat and several blades adjustable on this about at least one axis.

The main object of the invention is to create an axial fan, that has a long service life with the least amount of material Has operational reliability. This task is according to the invention essentially solved by the fact that the wings are at least approximately perpendicular to the wing axis in the plane of rotation of the rotor horizontal axis are pivotably mounted. Such an angularly movable suspension of the wings is achieved that the wings in operation in alignment of the resultant from the Dead weight of the wings and the air force acting on them as well as the centrifugal force can be freely adjusted and thus the clamping torque acting in the vertical plane approaches 0.

Around the installation space for the fan rotor with the angularly movable To be able to keep the wings stored on the property in the usual masses, the pivot angle range of the wings can be further expansion of the invention through appropriate stops be limited.

An advantageous development of the invention also consists in the fact that the pivot bearing consists of one or more of the _; There is eyes arranged at the roots of the wing, in which the pin of an I-shaped connecting piece which is adjustably connected to the hub about a radially extending axis engages. This configuration results in a particularly simple structure of the wing connection with a clearly laid-out course of forces, which allows the individual components to be precisely dimensioned according to their load * '

With "the preferred. Use of fiber-reinforced plastic there is another advantageous material for the flügelhölmö Embodiment of the invention in that the eyes from the '*

009834/0472 bathroom original

Wing root around a pin corresponding to the diameter of the connection A mandrel looped around strands of a fiber-reinforced plastic and preferably a support rib inserted into the wing shape, for example as a prefabricated part exist * With such a design of the eyes for the pivoting wing mounting, a weight is particularly light • and reliable transfer of forces to the wing connecting parts achieved.

It is also within the scope of the invention to make the loop-shaped strands of fiber-reinforced plastic wrapped around the connecting pins in eyes known way with a layer of lubricant (e.g. "Teflon" fabric or the like), which results in a practically maintenance-free pivot bearing of the fan blades.

Finally, the wing suspension according to the invention advantageously designed so that the entire pivot mechanism lies within the wing contour, whereby each unfavorable Influencing the wing flow is avoided.

The following is an exemplary embodiment of the invention the drawing with 6 illustrations explained in more detail. Sound this show im. individual:

Fig. 1 the wing suspension of an axial fan according to the Invention in plan, partially cut open,

Fig. 2 is a partial longitudinal section along the line II-II in Fig. 1 with the same wing suspension,

Fig. 3 a symbol for the laying of the strands in one similar section as in Fig. 2 during the flight construction and

Fig. 4 to 6 three different embodiments of stops for limiting the Flug1-Sehwenkwinkel * <

The rotor of an axial fan illustrated in FIGS. 1 and 2 consists of a hub 1 and several attached to it « ten wings 3. The individual wings are approximated; perpendicular to the wing longitudinal axis 2 in the plane of rotation of the rotor st horizontal axis 4 pivoted. The Sohwenkwinkelbereioh

009834/0472 - ^ - < -3-

BATH

the hill 3 can be limited by stops. Tucks can consist, for example, of a stationary .extension 10 'of the T-shaped connection piece 10, which either as shown in Fig. 4 with rigid stop blocks 5 or as shown in Fig. 5 "or 6 with resilient stop blocks 6 or with spring bodies 7 on the wing cooperate, which exert a braking effect proportional to the swivel angle deflections on the wings. In the exemplary embodiment, the pivot bearing of the wing 3 consists of two eyes 8, 8 'attached to the wing root, in which the pin of one with the dimension ^ jl · do the axis 2 adjustable connected I-shaped connector 10 engages with extension 10 '.! The eyes 8,8' consist according to Figs. 2 and 3 _; from strands 12,12 'of a fiber-reinforced plastic looped around a mandrel 11 15, the end of the l ⁿ lügeihölmes 13 and a pre-made in the wing shape, inserted support rib the bearing lugs 8.8 'are on the inside in per se. "- known manner with a öleitstoffschicht 15 from dressed.

/ Claims;

- ■ -0D9834 / 0472

Claims (1)

-,, BORTLlHGtN UB. GÖPPINGEN Attachment to the registration of the I-Ier-n Ing. Laugen Hänle, ochlattstall, October 25, 1966. • - re? If286 P_a_t_§_n_t_a_n_s_p_r_ü_c_h_e: Suspension for axial fan blades, especially for large flow rates for ventilating cooling towers od.dsrgl ... whose rotor consists of a motor-driven i ^ abe with several ■ ^ single blades, characterized in that the blades are at least approximately perpendicular to the i ^fi Vane axis in the lire plane of the rotor axis (4) is pivotably mounted. 2ο wing suspension according to claim 1, characterized in that that the bci.v.enkwinkelbereich the ^ wing by stops (5,6,7) is limited. 3 ο wing on suspension according to claims 1 or 2, thereby marked that the Schv / enklagerung from one or consists of several eyes (b, b ') arranged at the wing roots, into which the pin (9) one with the liabe around a radially extending one Axis (2) adjustable "connected T-shaped discharge piece (10) intervenes. 4. wing suspension according to claim 3, characterized in that that the eyes tap out at the wing njrzel around a connection in the diameter corresponding to the mandrel (11) looped around Strands (12, 12 ') of a fiber-reinforced plastic and a support rib (14) inserted into the wing shape in a prefabricated manner. 5. wing suspension according to claims 1 and 4, characterized in that that the Augaai in a known manner with a Layer (15) made of ^ conductive material ("Teflon" - & ewebe or the like.) are leached » 6 "wing suspension η, - ^ ung according to claim 1 or the following, thereby characterized in that the entire pivot mechanism lies within the wing contour. Virti \ Ώ; ηιη, der · 25.1Ü _o bb O O 9 8 3 A / O A 7 2