SU1171906A1 - Magnetic circuit for electric machine - Google Patents

Abstract

MAGNETIC WIRE ELECTRIC MACHINE, containing the basics. Additional ventilation packages located between them, having radial channels in the form of grooves, characterized in that, in order to simplify the manufacturing technology while improving heat ventilation and energy characteristics, additional ventilation packages are made of at least two parts grooves, with the grooves facing the open sides of the opposite cylindrical surfaces of the magnetic circuit, and the closed sides facing each other with an overlap through which neither reportedly

Description

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The invention relates to electrical engineering, to the section of electrical machines with packaged magnetic conductors and a radial ventilation system.

The aim of the invention is to simplify the manufacturing technology while at the same time improving the heat ventilation and energy characteristics.

FIG. 1 and 2 depict the proposed electric machine, longitudinal section; in fig. 3 and 4, respectively, sections A-A and BB in FIG. 1 and 2; in fig. 5 shows a section B-B in FIG. 3 and 4; in fig. 6- and 7-sheets of a stator and a rotor, respectively, for additional ventilation bags, allowing them to be made from sheets of one geometric configuration; in fig. 8 and 9 are sections A-A and B-B, respectively, in FIG. 1 (for use with the sheets in Figs. 6 and 7); in fig. 10 shows a section of YYY in FIG. 8 and 9.

Packaged magnetic core 1 consists of main packages 2 separated by additional ventilation packages 3. Additional packages contain radial channels 4 in the form of grooves 5. 6 packages open from one cylindrical periphery and closed from opposite 7. Additional packages are made of two components (Fig. ) adjacent parts 8 and 9 or have a third (fig. 2) adjacent part 10. In adjacent parts of the packages, the grooves of the radial channels with open sides I 1 face different cylindrical peripherals 5 and 6, and closed sides 12 each other Ugu with mutual overlapping overlap. At the same time, the grooves of adjacent parts of additional ventilation packages are interconnected through each other through zones 13 of mutual overlaps.

Electric machine works as follows.

The refrigerant supplied for cooling the mangia (in the drawing, the movement of the refrigerant is indicated by arrows) comes from the inner periphery 6 of the rotor magnetic circuit (stator) into its axial channels 4. The axial channels are formed by grooves 5 open in opposite peripheries that have an overlap of 13. in the middle part of the magnetic circuit. the refrigerant flows from the inside of the radial channel to the outside through the zone 13 of mutual overlap and enters the outer periphery 7 of the magnetic core 4. At the same time, thanks to the developed internal th surface and the radial passages from flowing through the cross-area of mutual overlap 13 increases the cooling efficiency of the electrical machine.

The proposed electric machine does not contain special spacer and ventilation elements — wind-plates — in the radial channels of the stator and rotor, but is made entirely of stamped electrical steel sheets, which simplifies the manufacturing technology.

Ventilation sheets are used to form the radial channels. can be made from the main sheets by additional punching out of the ventilation grooves 5. The adjacent parts 8 and 9 of the ventilation packages can be made of geometrically uniform sheets (stator sheet (Fig. 6), rotor sheet (Fig. 7), for the assembly of adjacent parts, the ventilation bags are deployed in the tangential direction at an appropriate angle a.

The implementation of the radial channels of the rotor and stator of electrical steel sheets makes it possible to increase the electro. magnetic loads or with the same loads to reduce the length of the active part of the electric machine, which accordingly improves the energy parameters of the machine - cos f, efficiency.

The proposed technical renovation allows one to automatically implement some principles of increasing the efficiency of cooling the stators, which require special structural measures in ordinary machines.

Technical and economic efficiency of the proposed technical solution is to improve the technological design of increasing the electromagnetic use of the active parts of the electric machine and improve the heat and air ventilation and energy characteristics.

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Claims (1)

ELECTRICAL MACHINE MAGNET CABLE, containing main packages and additional ventilation packages located between them, having radial channels in the form of grooves, characterized in that, in order to simplify manufacturing technology while improving heat ventilation and energy characteristics, additional ventilation packages are made up of at least two parts with grooves, the grooves facing the open sides to opposite cylindrical surfaces of the magnetic circuit, and the closed sides E - to each other with overlap, through which they report. Figure 1