DD200630A1 - ALL-SIDE SWIVELING BLOWER UNIT FOR PNEUMATIC CLEANING DEVICES, ESPECIALLY FOR FAN BLADES - Google Patents

Abstract

The invention relates to pneumatic cleaning devices for parks, walkways and sports stadiums. Their goal is to create a blowing duese, which can change the air jet direction with a small flow loss in a certain solid angle and is of compact form. Their task is to create the necessary for the stadium cleaning compactness of a Blasduese by maintaining movable duct wall parts and Luftleitflaechen in the channel while maintaining a streamlined inner shape. The essence of the invention is that at the end of the channel-like Duesenquerschnittes a flexible guide mechanism is mounted, which affects the blowing direction in a plane and the channel-like nozzle end can swing in total in a second, to the first vertical plane. Thus, the blowing direction can be set arbitrarily within a certain solid angle. Possible fields of application are pneumatic cleaning devices for cleaning parks, sidewalks and sport stadiums of leaves, paper and similar waste; in particular, where the surfaces to be cleaned are interrupted by fixtures such as benches, Gelaender or stairs. In addition, the application of pneumatically acting devices for Schaedlingsbekapfung is possible.

Description

232497

Title of the invention

All-round swiveling blowing nozzle for pneumatic cleaning devices, in particular for leaf blowers

Field of application of the invention

The invention relates to an all-round swiveling Blu3dÜ3e for pneumatic cleaning devices, in particular for Laubblasgeräte the park, sidewalk and sports stadium; cleaning of leaves, paper and similar waste. Their application is particularly useful where the surfaces to be cleaned by internals such as benches, railings, stairs or partitions - as they occur in the [ Zuachauerbereichen sports stadiums and outdoor stages': - resist a cleaning device with fixed blowing direction.

Characteristic of the known technical solutions

In the conventional Laubblasgeräten it is known that the tuyere in the direction of travel (OS 22 56 875 E 01h 1/03); or horizontally perpendicular to the direction of travel is arranged rigidly ι. | _:;

Also solutions have become known where the blowing direction in a direction perpendicular to the direction perpendicular plane can be slightly adjusted by moving vanes (Laubblasgerät "Parker", USK), so as to influence the range of the air jet.

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^£ # 5 This blowing nozzles adheres to the defect that sich.die seal of the air jet in the plane can be of the change area to be cleaned only by changing the direction of travel of the total Laubblasgerätes · As a result, it is not possible, or very difficult, surfaces confining internals how to clean the spectator areas of sports stadiums and open-air stages.

Furthermore, an all-round swiveling nozzle in the form of an annular tank has become known, in the alternate claw-like interlocking inner and outer rings with a lot of axial play · the pivoting:

sharp (OS 23 34 386 B 65g 53/42). Here are significant disadvantages is that once the minimum radius of curvature of this nozzle is relatively large and thus defies the necessary compact design of Laubblasgeräten for sports stadium cleaning and on the other hand, that this nozzle inside is very rough, causing a considerable loss of energy of the air flow.

Also, a tilting joint for the Saugluftführung to vacuum cleaners has become known in which a pivoting movement of over 90 ° can be generated with a very small radius of curvature (WP 42 230 A 471 9/02). The disadvantage here is that the Schwenkbtwtgung is possible only in one plane.

Object of the invention

The aim of the invention is to eliminate the disadvantages described and to provide a blowing nozzle that can change the direction of an air jet within a certain solid angle at low flow energy losses, while compact shape and thus makes Laubblasgeräte suitable for sports staging.

232497 8

Explanation of the essence of the invention

The invention has for its object to provide by moving duct wall parts and air ducts a nozzle of small dimensions, which can independently change the direction of the air jet in two levels of space and that thus a certain solid angle can be painted.

The technical reasons for the unsuitability of the known blast nozzles for .Stadionreinigung are above all their far too large dimensions and the structurally related flow-unfavorable roughness of their inner surfaces.

According to the invention this is achieved in that at the end of the rectangular, channel-like nozzle cross-section two or more flexible, one-sided firmly clamped guide surfaces are mounted parallel to each other. The two outer fins simultaneously form the channel walls. The opposite sides of the clamped sides are hinged to a thin frame. An actuating or transmission element (for example a Bowden cable) engages in this freely movable direction on this frame.

Daa whole, this guide mechanism-containing channel part is hinged to the fixed channel with a hinge, the axis of which is located in a channel wall and is perpendicular to the direction of flow and the plane of the guide surfaces. A sheath is attached to the outside of the fixed hinge wall opposite the pivot. In this scabbard is a flexible, rectangular-sheet-like part, which is attached to the movable channel part. The boundaries of the right angle adjoining fixed channel walls are guided in a circular arc around the axis of the rotary joint.

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In puncture, the following procedure results *

If the direction of Luftatrahlee in one -. B. vertical - to be changed level of the room, the flexible guide surfaces leading frame is raised or lowered via the actuator. The flexible baffles bend while streamlined. If the direction of the air jet in the other - horizontal - level of the room to be changed, the entire rotatable channel part is rotated about its axis of rotation via an actuator · The attached to him flexible, rectangular-Flächenfö'rmige part is pulled out of the sheath. It attaches itself to the kreiabogenförmigen edges of the right angle adjoining the channel walls and thereby forms a - curved channel wall.

Auaführungsbeispiel

The invention will be explained in more detail below using an exemplary embodiment. It shows:

Fig. 1x a schematic representation of the blowing nozzle

On the fixed channel 1, a movable channel part 3 is articulated by means of a rotary joint 2. This contains three flexible guide surfaces 4, which are hingedly connected to the frame 5. At the restraints 6, 7 and 8, the flexible guide surfaces are fixedly connected to the movable channel part 3.

On the frame 5, an actuating element (Bowden cable) 9 attacks. On the movable channel part 3, an actuating element (Bowden cable) 10 attacks. In a sheath 11 is a flexible channel wall piece 12 which is fixedly connected at the edge with the movable channel part 3. The upper and lower walls 14 of the fixed channel 1 terminate in a quarter circle and overlap the movable channel part 3.

Claims (1)

- ⁵ - 232497 8 invention claim Swivel nozzle on all sides for pneumatic cleaning devices, in particular for Laubblasgeräte, characterized in that in one about the axis of a rotary joint (2) movable channel part (3) at right angles or nearly perpendicular to the axis of the rotary joint (2) two or more one-sided firmly clamped flexible Fulcrum (4) are arranged, which are hingedly connected at its other end to a frame (5) and can be bent streamlined with an actuating element (9) attached thereto and in that on the movable channel part (3) a flexible channel wall piece (12) attached is, which on the walls (14) of the fixed channel part (1) tightly and is guided in the sheath (11). For this 1 page drawings