DE204863C

DE204863C -

Info

Publication number: DE204863C
Application number: DENDAT204863D
Authority: DE

Description

Gegenstand der vorliegenden Erfindung ist ein Schleudergebläse bzw. eine Schleuderpumpe, insbesondere eine solche, bei welcher das Mittel, eine Flüssigkeit, ein Gas oder Luft, achsial eintritt und tangentialen Austritt hat, wenn auch nichts im Wege steht, den Eintritt und Austritt zu wechseln bzw. nur angenähert in den oben angegebenen Richtungen vorgehen zu lassen.The subject of the present invention is a centrifugal fan or a centrifugal pump, in particular one in which the agent, a liquid, a gas or air, Axial entry and tangential exit has the entry, even if nothing stands in the way and exit or to proceed only approximately in the directions given above.

ίο Bei den bisherigen Vorrichtungen solcher Art verwendet man Einzelschaufeln, welche im Kranz der Schleuderpumpe bzw. des Schleudergebläses gewöhnlich einzeln befestigt waren, was neben der Kompliziertheit der Konstruktionen den Nachteil mit sich brachte, daß die Festigkeit des Rades litt, so daß man in der Höhe der Tourenzahl infolge der auftretenden Schleuderkräfte und Massenbeanspruchungen beschränkt war. Ferner zeigten die alten Vorrichtungen den Nachteil, daß hinter der Peripherie des Rades Wirbelungen und starke Druckdifferenzen auftraten, welche den Nutzeffekt der Vorrichtung verringerten.ίο With the previous devices such Type one uses single blades, which are in the ring of the centrifugal pump or the centrifugal fan usually attached individually, which is beside the complexity of the constructions brought the disadvantage that the strength of the wheel suffered, so that one in the Amount of the number of revolutions as a result of the centrifugal forces and mass loads that occur was limited. Furthermore, the old devices had the disadvantage that behind the periphery eddies of the wheel and strong pressure differences occurred, which reduced the efficiency of the device.

Das Wesen der neuen Erfindung besteht in einer neuen, von den bisherigen Konstrukr tionen abweichenden Bauart der Schaufelung, bei der man mehrere mit Ausbuchtungen von etwa Wellenform versehene ringartige Scheiben in achsialer Richtung nebeneinandersetzt.The essence of the new invention consists in a new, from the previous construct Options deviating design of the blades, in which there are several with bulges of Ring-like disks with approximately wave-shape are juxtaposed in the axial direction.

An sich sind ringartige Scheiben mit Ausbuchtungen schon bekannt geworden, aber nur bei durch von treibenden Mitteln bewegten Turbinen. Hierbei durchströmte das Mittel die gewellten Ringe, jedoch nicht in radialer, sondern in tangentialer Richtung bzw. der Wicklungs- (Kreis-) richtung der Ringe. Bei schweren Fördermitteln, ζ. Β. Flüssigkeiten, können die Scheiben der neuen Erfindung aus Guß bestehen, während sie besonders für gasartige Körper aus dünnem Blech hergestellt sind. Von besonderer Wichtigkeit sind diejenigen Ausführungsformen, bei welchen der Umfang der Ringscheiben wellenförmig oder zickzackartig geformt ist, was bei Blechmaterial vorzugsweise durch Pressung geschieht, so daß abwechselnd Wellenberge und Wellentäler entstehen, bei welchen die Wellenberge zweier nebeneinanderliegender Ringscheiben aufeinanderstoßen, so daß der ganze Kranz im Aufblick ein netzartiges Aussehen erhält. Hierbei bietet sich eine gute Möglichkeit der gegenseitigen Befestigung der einzelnen Ringscheiben, so daß ein Verrutschen derselben ausgeschlossen ist.Ring-like disks with bulges are already known per se, but only in the case of turbines moved by driving means. Here the medium flowed through the corrugated rings, but not in the radial, but in the tangential direction or the Winding (circular) direction of the rings. For heavy funding, ζ. Β. Liquids, the discs of the new invention can be made of cast, while they are especially for gaseous Bodies are made from thin sheet metal. Of particular importance are those Embodiments in which the circumference of the annular disks is shaped like a wave or zigzag, which is the case with sheet metal preferably done by pressing, so that alternating wave crests and wave troughs arise in which the wave crests of two adjacent ring disks collide, so that the whole wreath takes on a net-like appearance when looking up. This offers a good opportunity for mutual Attachment of the individual ring disks, so that slipping is excluded is.

Auf der beiliegenden Zeichnung sind verschiedene Ausführungsformen der neuen Erfindung dargestellt, und zwar zeigt Fig". 1 die Ansicht eines Schleudergebläses oder einer Schleuderpumpe, die Fig. 2 und 4 seitliche Ansichten eines Ringes mit verschiedenartiger Schaufelform und die Fig. 3 und 5 Oberansichten der Ringe. Fig. 6 stellt einen senkrechten Schnitt durch Fig. 1 dar. Fig. 8 gibt eine Oberaufsicht auf die gesamte Schaufelung. Fig. 9 zeigt Teile der Schaufelung verschiedener Form in abgewickeltem Zustande. Fig. 7 stellt ein konisch zugehendes Schaufelrad dar.On the accompanying drawings are various embodiments of the new invention shown, namely Fig ". 1 shows a view of a centrifugal fan or a Centrifugal pump, FIGS. 2 and 4 side views of a ring with different types Blade shape and FIGS. 3 and 5 top views of the rings. Fig. 6 shows a vertical section through Fig. 1. Fig. 8 gives a supervision of the entire shoveling. Fig. 9 shows parts of the blades of various Form in the unwound state. Fig. 7 shows a conically tapering paddle wheel.

Die Zeichnung bringt den wichtigsten Fall zur Anschauung, wonach (s. Fig. 6) der Eintritt des Mittels achsial und der Austritt radial bzw. tangential erfolgt.The drawing shows the most important case, according to which (see Fig. 6) the entry of the means is axially and the exit is radial or tangential.

Das ganze Schaufelrad besteht nach Fig. 6 aus einem auf der Achse sitzenden Tragkörper Λ, an welchen sich die SchaufelungAccording to FIG. 6, the whole paddle wheel consists of a supporting body seated on the axle Λ, on which the blades

Claims

closes. It is formed from individual disks b, which are either cast or punched from sheet-like material and have extrusions in the lateral direction (Fig. 9) either curved or angular (e.g. also rectangular) in shape. The scooping can also be formed by helically winding a sheet-metal strip next to one another, which has extrusions in the lateral direction. The. The type of shoveling can be used according to the circumstances. Fig. 2 shows, for example, curve shapes, while Fig. 4 shows straight shapes of the blades .15, namely at /, g and β a different slope to the radius is shown. The end on the second side of the wheel is formed by a ring i, which can be connected to the support arms h by axially directed rods d or in some other way, so that the entire device forms a rigid wheel. Nothing stands in the way of moving the individual corrugated rings to one another in any way, whereby one only has to ensure / that they maintain their mutual position. In FIG. 9, one of the most important cases is shown, according to which the wave crests of two adjacent rings each touch. Should the rods not yet suffice to provide a mutual. To prevent sliding displacement of the rings against one another, these wave crests according to FIG. 9 can interlock with elevations or recesses. In this case, the main view of such a wheel shows a net-like structure according to FIGS. 8 and 6. Of course, in FIG. 6, the conveying means can also be allowed to enter from both sides of the axle. According to Fig. 7, the rings widen to the right to constantly, so that the centrifugal wheel is shaped in cross section after a truncated cone. Of course, any other desired shape can also be selected, for example two truncated cones abutting one another with their larger or smaller base areas, or the average line can also be formed according to any other suitable curve. The advantages of the new device are that the assembly can be carried out extremely easily and for any width, as soon as the cast or pressed rings are available in sufficient number. The casting models to be made for different fan sizes are therefore reduced compared to other designs,. : quite considerable. Another advantage is that the centrifugal forces can never throw individual parts out of the wheel, because the ring-like structures, especially when they are punched from sheet metal, offer the greatest possible resistance. A loss of individual blades is impossible. Furthermore, it is achieved by the invention that the conveying means in the wheel is given a direction which excludes eddies and pressure differences behind the periphery of the wheel. This advantage means that with the impeller of the same size and the same circumferential speed, the amount conveyed and the pressure achieved, i.e. the useful output, are correspondingly higher. The shape and number of the ring-like disks lying next to one another and also the number, size and design of the passage openings are used in accordance with the respective purpose. Godfather nt-A ν Proverbs: 80

1. Centrifugal fan or pump, primarily with an axial and a tangential inlet Outlet, characterized in that two in the axial direction juxtaposed, Ring-like disks provided with indentations and bulges of a known type with their corrugated arches butt against each other, so that a closed net-like structure is created.

2. Embodiment of the device according to claim 1, characterized in that that the rings interlock at their bulges to prevent mutual displacement with elevations and depressions. -:

For this purpose ι sheet of drawings.

PERLIH. GEDRUCKT IN DER REtCHSDRUCKERELPERLIH. PRINTED IN THE REtCHSDRUCKEREL