SU1403230A1 - Electric machine rotor - Google Patents

Abstract

The invention relates to the field of electrical engineering. The purpose of the invention is to simplify the design and manufacturing technology. The core 2 with a short-circuited winding is mounted on the shaft I of the rotor. According to one measure, one ring element 3 of the rotor is made of a material having a shape memory effect. This makes it possible to increase the critical frequency of the rotor rotor, its reliability and durability. I il.

Description

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This invention relates to electrical engineering, in particular to high-speed electric machines.

The purpose of the invention is to simplify the design, simplify the manufacturing technology and assembly of the rotor.

The drawing shows the rotor of the turbocharger, a longitudinal section.

The rotor contains a shaft 1 with an annular part, the radius of which exceeds the radius of the central g arises after processing the assembled rotor according to a well-known technological process of restoring the original shape of a material with a memory effect, due to the voltage generated in the material.

The use of ring elements from a material with a shape memory effect, for example titanium n-nitride, allows to obtain the required tightening force and

shaft, core 2, represents 10 to create a rigid rotor structure and

a laminated magnetic core with a short-circuited winding, ring elements 3, at least one of which is made of a material with a shape memory effect, and a nut 4.

The rotor is assembled as follows.

On the shaft of the rotor 1, the ring elements 3 are mounted, the core 2 and secured with a nut 4. Before assembling, the ring element 3 of a material having an effective shape memory is made according to a known technological process to give it the properties of the memory and the original (working ) form, then deformed (technological) form. The deformed shape must be made with the size I, which must be less than the original size by the amount of the required axial tension over the set of elements, in order to impart the required rigidity to the rotor. This

by increasing its critical frequency of rotation by 15-20%, reliability and durability, due to the smaller axial size of the rotor barrel, aerodynamic resistance to rotation of the rotor is reduced by 15-20%, thereby increasing the efficiency of the electric motor, simplifying the technology of manufacturing and assembling the rotor.

Claims (1)

Invention Formula The rotor of an electric machine, containing a shaft with an end part whose radius exceeds the radius of the central part of the shaft, the core and ring elements fixed to the shaft by means of a nut, characterized in that, in order to simplify the design, the technology of manufacture and assembly, at least At least one ring element is made of a material that has a shape memory. Tension occurs after processing the assembled rotor according to a known technological process of restoring the original shape of the material with the memory effect of the form, due to the voltage generated in the material. The use of ring elements from a material with a shape memory effect, for example titanium n-nitride, allows to obtain the required tightening force and  create a rigid rotor design and themes 0 by increasing its critical frequency of rotation by 15-20%, reliability and durability, due to the smaller axial size of the rotor barrel, aerodynamic resistance to rotation of the rotor is reduced by 15-20%, thereby increasing the efficiency of the electric motor, simplifying the technology of manufacturing and assembling the rotor. Invention Formula The rotor of an electric machine, which contains a shaft with an end part whose radius exceeds the radius of the central part of the shaft, the core and ring elements fixed to the shaft by means of a nut, characterized in that, in order to simplify the design, manufacturing technology and assembly, at least one ring element is made of a material with a shape memory.