SU754492A1 - Device for magnetizing multipolar magnetic electric machines - Google Patents

Description

The invention relates to devices for magnetizing the multi-pole permanent magnets of electrical machines.

Known devices for multipole magnetizing magnet electric machines, comprising mnogopolyus- ⁵ ny magnetic field source made in the form of an electromagnet [ΐ].

The poles of this electromagnet cover a permanent, magnetised magnet on the outer surface with a successive alternation of the north and south poles.

A disadvantage of the known device is that, when magnetized multi-pole magnet _15, the magnetic field is directed along an arc between adjacent poles + and magnetization can not be performed on the entire height of the pole, which reduces the utilization of the magnetic materialistic _m la magnet, and in the case of these devices magnetizing one-piece multipolar magnets with directional solidification in the direction of the poles

2

It is impossible to match the magnetic field with the direction of the crystals.

The aim of the invention is to increase the magnetic properties of the magnetized magnet.

This is achieved by the fact that the magnetic circuit of the electromagnet is made of three parts, one of which is a central multi-faceted prismatic multi-pole composed of sectors with alternating polarity separated by non-magnetic spacers, with the number of faces equal to the number of poles of the magnetized magnet, and the other part is made of separate poles with reverse alternating polarity, symmetrically arranged around a multifaceted central multi-terminal with a gap to accommodate a magnetized magnet, and retya portion being vvde connecting webs, connecting with the central poles isolated polyhedral prismatic multipole.

FIG. 1 shows the proposed device; in fig. 2 shows section A-A in FIG. one.

The device contains ^ composed of sectors multi-faceted prismatic multi-pole 1, non-magnetic gaskets 2 between sectors, separated outer poles 3, connecting lines 4, connecting the outer poles respectively with sectors of a central multi-pole 1, magnetizing coils 5, [

connected to the polarity shown in the drawing.

To magnetize a multi-pole magnet, it is prevented from entering the gap between the central and external multipoles | so that the poles of the magnetized magnet 6 (the drawing shows a multipolar solid magnet with directional crystallization across the poles and an equiaxial structure 7 between the poles) coincide on the inner side with the edges of the central prismatic multipole, and the outer one with the poles of the outer multipole. The magnetizing coils are connected to a pulsed or direct current source.

The magnetic characteristics of multipole magnets, textured during the thermomagnetic treatment to the entire pole height and magnetized using the device described, are increased in the direction of the poles with respect to the multipole magnets with directional crystallization on the poles magnetized with

four

using known devices on the specificity of the '# th energy; from 6 to 12 million.

Claims (1)

Claim A device for magnetizing multipolar magnets of electric machines, containing a multipolar magnetic field source, made in the form of an electromagnet, characterized in that, in order to improve the magnetic properties of a magnetized magnet, the electromagnet magnetic circuit is made of three parts, one of which is a central multi-faceted prismatic multipole composed from sectors separated by non-magnetic spacers with alternating polarity with the number of faces equal to the number of poles magnetized -, θ of the magnet, the other part is made of separate poles with reverse alternating polarity, symmetrically arranged around a multi-faceted central multipolar network with a gap to accommodate a magnetized magnet, and the third part is made in the form of connecting bridges connecting the separate poles to the central multi-faceted prismatic MULTIPOLUMBER CHAPTERS.