SU1091274A1 - Stator for electric machine - Google Patents

Abstract

1. ELECTRIC MASSAGER STATOR, containing a winding and a magnetic conductor, including an annular ring and a tooth of a zonue composed of E (made of longitudinally laminated teeth, fastened together by means of support rings located in grooves on the ends of the teeth, about 20 and so that, in order to increase the energy performance of the electric machine with malm with a diameter of boring and jiip technology, the grooves on the teeth are made in the bore area, and the support rings protrude the protrusions to limit the angular displacements of the teeth.

Description

2 f

/ „/ ..

five

Z

YU

3

jlA.

i

and.

GC

TPG

Jljl

(game 1

2. The stator according to claim 1, characterized in that the rings are made of a nonmagnetic material coated with an electrically insulating film, for example, of a titanium anodized alloy. The invention relates to electrical engineering and can be used, in particular, in electrically low power machines (EM), in particular EM with a non pole pole stator, having a small bore diameter, for example, asynchronous controlled electric motors. The EM stator is known, which contains a winding and a composite magnetic core that includes an annular rmo and a dentate zone, which is made up of a single piece of corrugated tape in the form of longitudinally laminated teeth fastened together in the boring zone with elements in the entire jumpers that are missing 1. In such a construction, the stator can significantly increase the utilization rate of the material. In addition, due to the lack of ribbing in the groove, it is possible to improve the quality of the insulation. However, the presence of magnetoconducting bridges degrades the energy performance and other characteristics of EM. A corrugated ribbon jagged ring leads to increased EM losses, which is caused by the following reasons: uninterruptedly, the ribbon from which the tooth is made forms an electroplating screen in the path of a variable magnetic flux, in which high currents form, creating a loss; the teeth formed by a curved tape have wavy surfaces, coupled with the working gap of the EM and the bridge, which increases the magnetic resistance of the gaps and leads to an increase in losses. Another disadvantage of the known design is the lack of rigidity of the dentate zone in both radial and tangential directions.

1091274

3.Statore pop.1, distinguished by the fact that the protrusions are located on the inner surface of the rings

4, Stator pop. 1, distinguished by 5 u and with the fact that between the teeth

installed plastic articulating conical wedges. The forces of tension on the teeth from the side of the annular frame are transmitted to a thin non-rigid bridge, which can lead to a radial displacement of the teeth and a violation of the size of the bore. In addition, the manufacture of the dentate zone requires special equipment for the corrugated tape, which complicates the manufacturing technology. Closest to the proposed stator of an electric machine, containing an annular rmo and longitudinally laminated teeth, fastened together by means of rings located in grooves on the ends of the teeth and having slots in which the protrusions of the outer plates of the teeth enter. From 2}. The disadvantage of this stator when used in machines with a small bore diameter is that the arrangement of the rings in the winding zone reduces the useful area of the manholes of the radio-conductor in which the winding can be located, which impairs the machine’s energy performance. In addition, the arrangement of the rings in the zone of the winding frontal parts makes it difficult to mechanize the winding. The purpose of the invention is to increase the energy performance of EM with malt bore diameter and simplify manufacturing technology. This goal is achieved by the fact that in the stator of an electric machine, which contains a hook and a magnetic core, including an annular ring and a tooth zone, consisting of longitudinally laminated teeth, fastened together by means of support rings located in grooves on the ends of the teeth, grooves on the teeth made in the bore area, and the support rings have protrusions to limit the angular displacements of the teeth. 3 Rings can be made of a non-magnetic material coated with an electrically insulating film, for example, of a titanium anodized alloy. Bearing rings can be made with protrusions on the inner surface. Plastic strung conical wedges can be installed between the stator teeth to increase the rigidity of the tooth zone. Figure 1 shows a longitudinal section of the EM stator with flat bearing rings; FIG. 2 is a view A on flat support rings having projections on the inner surface; FIG. on fig.Z - section bb in figure 1. The stator has a composite magnetic core including an annular yoke 1 made in the form of a transversely knitted ring that is installed on the tooth zone consisting of longitudinally laminated teeth 2 and elements 3 fastened together with projections 4. In the slots between the teeth -. 2, winding sections 5 are laid. At the ends of the teeth 2, in the area of the bore, rectangular grooves 6 are made, in which the scratches are placed; the drawing elements 3, made in the form of support rings. One or several support rings 3 can be installed into one groove. The projections 4 of the rings 3 fix the stator teeth in the angular position. Rings 3 are made of titanium anodized alloy, which provides a mechanically strong electrically insulating film and,. 4a as a result, the absence of electrical contact with the teeth. In order to increase the rigidity of the dentate zone and the elimination of the lining of the winding turns into the boring, the plumbing articulating tapered wedges 7 can be installed between the stator teeth. The stator assembly can be installed using simple technological mandrels. To increase the rigidity of the assembled stator structure, it can be filled with epoxy compound or crimped with a powdered compound of the premix type. The operation of the stator in the composition of the machine is no different from the operation of the stator of the normal execution. The following technical advantages are achieved with the use of the invention: the slot groove efficiency increases, since the support rings are located in the boring zone where the winding cannot be located. Because of this, the losses are reduced and the rigidity of the olives increases. There are no short circuits in the path of the eddy currents due to the fact that there is an electrical insulation film on the support rings. It also provides increased energy performance of the machine. For the manufacture of the stator does not require special equipment and technological process of manufacturing corrugated tape. The fabrication of longitudinally laminated teeth of a rectangular shape and support rings is provided by a simpler technology.

Claims (4)

1. STATOR OF ELECTRICAL MA- TIRES, containing a winding and a magnet wire, including an annular yoke and a tooth zone, consisting of longitudinally burnt teeth fastened together by means of support rings located in grooves on the ends of the teeth, which differs in that, with a chain for increasing the energy indicators of the electric machines with a small bore diameter and simplification of manufacturing technology, grooves on the teeth are made in the bore area, and the support 'rings have protrusions to limit the angular displacements of the teeth. FIG. f 2. The stator by π. 1, characterized in that the rings are made of non-magnetic material coated with an electrical insulating film, for example, anodized titanium alloy. 3. Stator pop. 1, characterized in that the protrusions are located on the inner surface of the rings 4, Stator pop. 1, characterized by the fact that between the teeth are installed plastic bursting conical wedges.