SU1379872A1 - Electric machine stator - Google Patents

Abstract

The invention relates to electrical engineering. The purpose of the invention is increased reliability. The stator of the electric machine contains a dentate zone of magnetodielectric. The teeth 1 are made at the same time with end washers 2, which cover the twisted steel tape on the edge of the PMO 5. The teeth I, the washers 2 and the PMO 5 are fastened to the monolith piece of the housing 6 with cooling fins 7, which are formed by pouring the magnetic core with molten aluminum. The winding 9 is directly pressed against a conductor having a good thermal contact with the ribs 7. This makes it possible to improve the heat transfer from the winding. 2 Il.

Description

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The invention relates to electrical engineering, more specifically to the design of waste-free manufacturing of the stator magnet circuit of low and medium power AC motors.

The aim of the invention is to increase reliability.

FIG. I shows a stator with a composite magnetic drive, longitudinal section; in fig. 2 shows section A-A in FIG. one .

The electric magneto stator contains a tooth zone made of two halves of an electrically-pressurized electrician, teeth 1 of which are made integral with end washers 2, on the outer side of which are locks 3 for connecting bearing shields A, and the inner cavity of the washer 2 encloses a twisted steel tape per edge romo 5, on a part of its oximal length, the teeth, 1 washer 2 and romo 5 are fastened in a monolith by an aluminum casing 6 with cooling fins 7, which are formed by pouring the magnetic core with molten aluminum.

A winding 9 is laid in the slots 8 between the teeth I. The proposed design has the following advantages;

improving the reliability of the cabinet insulation in the slots, since they do not have sharp edges and irregularities, about which insulation is usually rubbed off;

improved heat transfer from the windings, which are directly pressed to the crimped tape from the rib to the rib, which, in turn, has good thermal contact with the cooling fins;

the design is very technological; separate manufacture of the dentate zone with washers in the mold and assembling it with a belt makes it easy to mechanize these procurement and assembly operations;

Low-grade iron powders obtained from industrial wastes can be used to make a groove zone, which reduces the cost of the machine.

Claims (1)

Invention Formula The stator of an electric machine, containing a PMO, a dentate zone, a housing with longitudinal cooling fins, formed by casting it with molten metal, and two annular combs of heat-conducting magnetodielectric connected to each other, that, in order to increase reliability, the teeth are located inside the axial parts of the annular combs, and the end parts of the combs are in contact with the ends of the frame and cover it on the part of axial length.