SU1295481A1 - Magnetic circuit of electric machine with winding - Google Patents

Abstract

The invention relates to electrical engineering. The circuit of the invention consists in increasing the energy characteristics and simplifying the manufacturing technology. The magnetic circuit of an electric machine contains PMO 1, teeth 2, rings 4, which connect the teeth between themselves and the coupling. Due to the fact that each ring has a constant cross section along the length, is made of elastic material and is located within the radial size of the tooth, the goal is achieved. 4 hp F-lu, 7 Il. C 9 ISD QD SP 4 00 FIG. 2

Description

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it jof lif Tt HHe (,) T Ips. i; electrc - maignostrstria, and parts of electrical maipshams, whose magnetic circuits are of one type, their first 11 are based on low-waste technology of their manufacture.

The purpose of the invention is to improve the energy characteristics and simplify the manufacturing technology of the magnetic circuit, and also eliminate the tangential displacement of the teeth.

FIG. 1 shows the stator design j in FIG. 2 shows the structure of a rigid coupling of the teeth to the rom with the help of two rings located in the notches of the teeth from the side of the working gap; in fig. 3 shows the structure of a rigid connection of a tooth to the р rm with the help of two rings located in the end recesses of the tooth; in fig. 4 - the device allowing change of the size of a ring on its diameter; in Fig. 5, the structure of the rigid connection of the teeth with the rim with noMowyt rings, while the rings are located on the projections of the teeth made of the tooth material; in fig. 6 is the same for projections made of a material other than the material of the tooth; FIG. 7 shows the structure of the stator magnetic circuit with two insulating washers containing recesses for positioning the projections of the tooth preventing tangential displacement of the teeth.

The magnetic circuit of an electric soda machine: рit 1 1, made by winding on an edge or by any other known method, teeth 2, containing axially arranged plates, winding 3.

The rigid connection of the teeth 2 to the p-, mu 1 is made with the help of smooth rings 4, located in the notches 5 of the teeth 2, which are made in the body of the tooth either from the side of the working gap or in the front part of them. The notches 5 on the side of the working gap can be made both in the teeth of the stator and in the teeth of the rotor, and their dimensions do not exceed the size of the ring. The notches 5 in the end part of the teeth are usually used for a rotor with a short-cage cage, since the ring that overlaps a part of the groove does not significantly affect the degradation of the machine.

Rings 4 are made of elastic material (steel, plastic, etc. they can be detachable, with devices that allow them to change

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five

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(ru) its diameter, for example, with notches 6 at the ends of a buck, joints K1) of the front parts of the kolyd overlap and clamp them with a buckle 7.

By increasing the diameter of the ring or reducing it, an internal radial force is created, which presses the prong to the collar by transferring the force from the ring to the prong through their total area of 8 contactors.

For the stator, the ring should not overlap the coil of the winding 3 from the groove, so it is placed on the protrusions 9, which are integral with the teeth 2, or on the projections 10, made of a material different from the material of the teeth, for example, plastic, magnetodielectric, etc. each protrusion 10 is rigidly connected to the tooth body by d) positioning a portion of the protrusion 10 in the body of the tooth 2.

A constructive solution with protrusions from materials other than the material of the tooth increases the utilization rate of the steel of the tooth. In addition, if it is necessary for the stator between the rings 4 and the teeth 2 (Figs. 2 and 5) to put an insulating gasket to reduce the loss of steel in the stator teeth, then according to the variant (Fig. 6), the protrusions 10 perform the role of the insulating gasket.

In order to prevent tangential displacement of the teeth, the yoke contains special washers 11 with notches 12, which include protrusions 9 or 10 and which are rigidly connected with the yoke by known methods.

Special washers can be made of an insulating material or a material with a higher surface resistance, or of steel for short-circuited rotors in the form. squirrel cage, and stators, in which the protrusions are made of insulating material.

The use of smooth rings, with a constant cross section along its length, makes it possible to install the teeth after laying the winding on the surface of the frame in such a way that the distance bn between the extreme plates of adjacent teeth on the side of the working gap is smaller than the diameter of the winding wire.

This leads to a simplification of the design of the machine by eliminating wedges for fastening the windings in the gantas and

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an improvement in the airborne pollution ratio, as a result, an improvement in the energy (K1Sh, cos Lp) characteristics of the machine, as well as the simplification of the technology of rigidly connecting the teeth with the cable.

The invention can be used in magnetic circuits of electric machines of direct and alternating current.

The manufacture of the magnetic circuit can be carried out in the following sequence: manufacturing of the magnetic core and the teeth of the magnetic core, isolating them in necessary places, installing special washers on the yoke and fixing them to the yoke, laying the winding on the yoke, installing the teeth on the yoke so that the distance between the outer plates the teeth are smaller than the diameter of the winding wire, the installation of the rings, the change of the diameter of only the split rings and their fastening, impregnation, or compounding of the windings.

Claims (5)

1. Magnetic circuit with electrical winding, containing rome, teeth of axially located plates with protrusions, or grooves for positioning the rings connecting the teeth between themselves and the mouth, semi-closed grooves under the winding, which distinguishes FIGS. one so that, in order to increase the energy characteristics and simplify the manufacturing technology, each ring has a constant cross section along the length, is made of elastic material and is located within the radial dimension of the tooth, while the distance between the extreme plates of adjacent teeth on the side of the working gap is smaller diameter of the magnet wire. 2. The magnetic circuit according to claim 1, in T is characterized in that at least one of the rings has a radial section, allowing its diameter to be changed, 3. Magnetic conductor on PP. 1 and 2, characterized in that the parts of the ring adjacent to the cut are jagged and overlapped with a clamp. 4. Magnetic conduit on PP. 1-3, which is characterized by the fact that, in order to eliminate tangential displacement of the teeth, insulating washers are installed at the ends of the frame, having recesses for accommodating the teeth of the magnetic conductor. 5. Magnetic conductor according to PP, 1-4, o t - characterized by the fact that the protrusions in the tooth for arranging the rings are made of a material different from the material of the tooth, 7 Fig4 3 1 .five ns.S P Compiled by V. Konstantinov Editor N. Bobkova Tehred V. Kadar Proofreader V. But Order 624/59 Circulation 661 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab, 4/3 Production and printing company, Vzht (,.. :: 7