DE175215C

DE175215C -

Info

Publication number: DE175215C
Application number: DENDAT175215D
Authority: DE

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

PATENTSCHRIFTPATENT LETTERING

- M 17.5215.— KLASSE 2id. GRUPPE - M 17.5215.- CLASS 2id. GROUP

MANCHESTER, Engl.MANCHESTER, Engl.

Induktionsmotor. Patentiert im Deutschen Reiche vom 26. August 1905 ab. Induction motor. Patented in the German Empire on August 26, 1905.

Die Erfindung betrifft den Bau von Induktionsmotoren für Mehrphasenstrom, bei denen zwei feststehende Teile oder Ständer und zwischen diesen eine Mehrzahl von sich drehenden Teilen oder Läufern vorgesehen sind, welche sich entweder mit gleicher oder verschiedener Geschwindigkeit drehen.The invention relates to the construction of induction motors for multi-phase current which have two fixed parts or stands and between them a plurality of themselves rotating parts or rotors are provided, which are either the same or rotate at different speeds.

Die beiden Ständer können geradlinig und in diesem Fall parallel oder schräg zueinanderThe two uprights can be straight and in this case parallel or oblique to each other

ίο angeordnet sein, oder sie können segmentförmig gestaltet sein, oder sie können zwei vollständige konzentrische Kreise bilden, wobei die Läufer in einem ringförmigen Raum zwischen den beiden Ständern angeordnet sind. Es ist vorzuziehen, die durch Querstege miteinander verbundenen Ständer aus übereinander gelegten gestanzten Eisen- oder Stahlblechen mit nach innen vorspringenden Zähnen herzustellen, welche zwischen den beiden Ständern einen Raum für jeden Läufer freilassen. Durch die Schlitze zwischen den Zähnen der übereinander liegenden Bleche werden isolierte Leiter gewickelt, die von einer äußeren Quelle mit Mehrphasenstrom gespeist werden. Die Wicklung ist derart, daß das von den Mehrphasenströmen erzeugte Wanderfeld sich in den beiden Ständern in entgegengesetzten Richtungen bewegt.ίο be arranged, or they can be segmented be designed, or they can form two complete concentric circles with the runners in an annular space are arranged between the two stands. It is preferable to use cross bars interconnected stand made of punched iron or superimposed To produce steel sheets with inwardly projecting teeth, which between the Leave a space for each runner on both stands. Through the slots between the The teeth of the sheets lying on top of one another are wound with insulated conductors, which are fed by an external source with multiphase power. The winding is such that the traveling field generated by the multiphase currents is in the two columns in moves in opposite directions.

In dem Raum zwischen den nach innen vorspringenden Zähnen der beiden Ständer, welche die magnetischen Pole bilden-, ist eine Anzahl von Läufern angeordnet, deren Achsen rechtwinklig zu der Ebene der Ständer verlaufen und von geeigneten Lagern getragen werden. Diese Läufer können voll oder röhrenförmig sein und können glatte Umfange besitzen, oder ihre Umfange können mit Nuten oder Schlitzen versehen sein, in denen Leiter angeordnet werden. Da das magnetische Feld in dem Ständer auf der einen Seite der Läufer in der entgegengesetzten Richtung fortschreitet wie in dem Ständer auf der anderen, so werden in den Läufern oder den darauf befindlichen Wicklungen elektrische Ströme induziert, welche die Läufer zwingen, sich mit einer der Frequenz der mehrphasigen Ströme in den Ständern proportionalen gleichförmigen Geschwindigkeit zu drehen, da das sich bewegende Feld allen Läufern gemeinsam ist. Die Geschwindigkeit des Fortschreitens des sich bewegenden Feldes kann durch Änderung der Frequenz der mehrphasigen Ströme in irgend einer Weise geändert werden, wodurch sich die Drehgeschwindigkeit der Läufer gleichzeitig in demselben Verhältnis ändert.In the space between the inwardly protruding teeth of the two uprights, which form the magnetic poles, a number of rotors are arranged, their axes perpendicular to the plane of the uprights and supported by suitable bearings will. These runners can be solid or tubular and can have smooth circumferences own, or their circumference can be provided with grooves or slots in which conductors are arranged. Because the magnetic field in the stator on one side of the rotor in the opposite Direction progresses as in the stator on the other, so are in the rotors or the windings located on them induces electrical currents, which force the runner to move with one of the frequencies of the multiphase currents in the stator proportional uniform velocity to turn, since the moving field is common to all runners. The speed of advancement of the moving field can be changed by changing the frequency of the polyphase currents can be changed in some way, thereby the speed of rotation of the runners changes at the same time in the same ratio.

Durch eine Abänderung der Bauart in der Weise, daß die Polteilung der beiden Ständer oder mit anderen Worten die Entfernung der Pole voneinander an verschiedenen Teilen verschieden gemacht wird, werden die zwischen den verschiedenen Ständerteilen befindlichen Läufer gezwungen, mit verschiedenen Geschwindigkeiten umzulaufen, welche sich genau nach der Polteilung richten.By changing the design in such a way that the pole pitch of the two stands or in other words the distance of the poles from each other on different parts is made different, are those located between the different stand parts Runner forced to run around at different speeds, which are based exactly on the pole pitch.

Fig. ι zeigt im Grundriß einen Teil einesFig. Ι shows a part of a plan view

Claims

Electric motor according to the invention with rectilinear uprights.

Fig. 2 is a section along the line AA in Fig. I.

Fig. 3 shows in plan a part of an electric motor in which the stator is curved are, with omitted stator windings.

Fig. 4 is a view of a single rotor, but without a winding, and

ίο Fig. 5 shows a modified embodiment.

The two uprights α and b are made of iron or steel sheets placed one on top of the other and are provided with grooves c ; the teeth d, which form the poles and protrude inwards or against one another, are so long that they leave a space between them to accommodate the rotor e . At those points where there are no runners, the teeth of the opposite stand can be extended and thus form transverse webs d ¹ . The stator plates can be held together by rods g , which, passed through them and the transverse webs h , firmly clamp the plates together by means of nuts i and threads. The crossbars h can also, as shown, be used to support the bearings for the axes k of the rotors e .

In the grooves c between the teeth d and d ^{1 of} the stator, the stator winding forming turns are arranged in the usual way, which are fed from an external source with multiphase currents, so that a moving magnetic field is generated in the stator in the known manner will. The windings m, however, are connected in such a way according to the invention and arranged such that the α in the stator-induced magnetic field propagating in the opposite direction as the field generated b the same time in the stand, that moves the generated field α in the stator in the direction of Arrow x, the field induced in the stator b moves in the direction of arrow y.

The shape of the stand can, as already said, be straight, as shown in Fig. 1, or segment-shaped, as in FIG. 3 indicated with full lines; or they can form two complete concentric circles, as indicated in part in FIG. 3 by the solid and dotted lines.

Instead of the bearing for the axes k of the rotor-bearing e Ouerstege h can also use other webs, which are arranged at right angles to the transverse webs h, to the extended teeth ¹ d be fixed and.

Carrying the bearings for the axes k of the rotor e are used.

The rotors e, which rotate in the spaces existing between the teeth d, d ^J , can be of any type customary in induction motors and be solid or tubular. You can get windings which are wound on them or arranged in slots or grooves. These windings can be of the so-called short-circuit type or connected with slip rings. In the embodiments shown in the drawings, each rotor has a short-circuit winding η.

If the pole pitch, i.e. H. the number of poles belonging to each runner is the same, As in the examples according to Fig. I, 2 and 3, the runners will be at the same time Rotate at a uniform speed equal to the frequency of the stator windings supplied polyphase currents is proportional.

The speed of the traveling field in the stands can be determined by any of the known methods are changed, such as. B. by changing the frequency of the supplied Multiphase current.

With the aid of the modified design shown in FIG. 5, in which the pitch of the poles formed by the teeth d is different at different points of the stator α and b , it is possible to obtain different speeds of the rotors e at the same time. These speeds are in exact proportion to the pole pitch. In the three-phase embodiment shown, the stator a, b in parts 1, 2, 3 and 4 have two, four, six and eight poles, so that the speeds of the rotors located in these parts are relative to one another like i, Y ₂ , V ₃ and ¹ J ₄ cautious.

In the illustrated embodiments, all of the rotors e have the same diameter. If straight uprights are used and these are arranged obliquely to one another, the rotors can have an ever increasing diameter from one end of the uprights to the other end.

An induction motor of the type described is suitable in any case where a number of axles, spindles or other parts that are mounted close together with the same or to be driven at different speeds.

115 godparents τ-an proverbs:

i. Induction motor, characterized in that in two opposite one another straight, segmented or circular stand parts, moving fields from the opposite direction in

which are reduced to a number between the same arranged rotor act, so that these depending on the pole pitch the associated stand parts receive the same or different speeds.

2. Induction motor according to claim i, characterized in that individual Teeth connect the opposite uprights, with transverse webs on these teeth can be attached, which serve as a carrier for the rotor axes.

For this purpose ι sheet of drawings.