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Rotor parts for rotating electrical machines, rotors for rotating electrical machines, and rotating electrical machines

A technology for rotating electrical machines and rotors, which is applied in the direction of magnetic circuit rotating parts, synchronous motors with stationary armatures and rotating magnets, and electrical components to suppress buckling, reduce shaft press-in force, and improve workability.

Active Publication Date: 2020-02-07
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in an induction-type rotating electrical machine, in principle, a current also flows through the rotor. Therefore, in order to improve efficiency and increase output, heat generation of the rotor due to this current has become a problem.

Method used

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  • Rotor parts for rotating electrical machines, rotors for rotating electrical machines, and rotating electrical machines
  • Rotor parts for rotating electrical machines, rotors for rotating electrical machines, and rotating electrical machines
  • Rotor parts for rotating electrical machines, rotors for rotating electrical machines, and rotating electrical machines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0033] figure 1 is a longitudinal sectional view showing the structure of the rotating electric machine according to the present embodiment, figure 2 It is a longitudinal sectional view showing the structure of the rotor of the rotating electric machine according to the present embodiment, image 3 is a cross-sectional view showing the configuration of the rotor of the rotating electric machine according to the present embodiment, Figure 4 yes figure 2 A partial enlargement of the . it's here, figure 1 and figure 2 is a sectional view at a section including the axis of rotation A. in addition, figure 2 yes image 3 The sectional view at the line II-II in, image 3 yes figure 2 Sectional view at the line III-III.

[0034] The rotating electric machine 1 according to the present embodiment includes: an annular stator 2 ; a rotor 3 arranged inside the stator 2 ; and a shaft 4 which is a rotor shaft fixed to the rotor 3 . The rotor 3 is a rotor of the rotating ele...

Embodiment approach 2

[0072] Figure 8 It is a vertical cross-sectional view showing the structure of the rotor of the rotating electric machine according to the present embodiment. In addition, in Figure 8 in, right with figure 2 The structural elements of the rotor 3 shown are identical to those with the same reference numerals.

[0073] The rotor 3 a according to the present embodiment has a cylindrical sleeve member 35 as a rotor member. The sleeve member 35 has an inner peripheral surface 35 a forming the through hole 15 . In addition, the sleeve member 35 has end portions 35b, 35c separated from each other in the axial direction. The end portion 35b is a first end portion, and the end portion 35c is a second end portion. Here, both end parts 35b and 35c are flange-shaped. That is, the end portion 35b constitutes the first flange portion, and the end portion 35c constitutes the second flange portion. The outer peripheral surface of the sleeve member 35 excluding the end portions 35b, ...

Embodiment approach 3

[0088] Figure 9 It is a vertical cross-sectional view showing the structure of the rotor of the rotating electric machine according to the present embodiment. In addition, in Figure 9 in, right with figure 2 The structural elements of the rotor 3 shown are identical to those with the same reference numerals.

[0089] The rotor 3b according to this embodiment has a cylindrical sleeve member 36 as a rotor member. The sleeve member 36 has an inner peripheral surface 36 a forming the through hole 15 . In addition, the sleeve member 36 has end portions 36b, 36c separated from each other in the axial direction. The end portion 36b is a first end portion, and the end portion 36c is a second end portion. Here, the end portion 36b has a flange shape. That is, the end portion 36b constitutes a flange portion. The outer peripheral surface of the sleeve member 36 excluding the end portion 36b is a cylindrical surface having the same outer diameter, and the outer diameter of the ...

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PUM

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Abstract

The rotor (3) has: a cylindrical sleeve part (9); a plurality of permanent magnets (10) arranged circumferentially on the outer peripheral surface of the sleeve part (9); and a cylindrical reinforcing part (12 ), which covers the outer peripheral surfaces of the plurality of permanent magnets (10). The sleeve member (9) has end portions (9b, 9c) separated from each other in the axial direction and an inner peripheral surface (9a) forming a through hole (15) penetrated by a shaft parallel to the axial direction. The end portion (9b) is a flange portion. The inner peripheral surface (9a) has: a tapered surface (9a-1) whose inner diameter continuously decreases from the end (9b) toward the end (9c); and a tapered surface (9a-2) which The inner diameter continuously decreases from the end portion (9c) toward the end portion (9b).

Description

technical field [0001] The present invention relates to a rotor part of a rotating electric machine, a rotor of a rotating electric machine having the rotor part, and a rotating electric machine having the rotor. Background technique [0002] Recently, due to the demand for energy saving due to the depletion of resources, the shortening of the machining cycle, or the processing of difficult-to-cut materials, the demand for high efficiency, high output, and high-speed rotation of rotating electrical machines for industrial use has become very high. [0003] There are two types of driving methods for rotating electric machines, "synchronous" and "inductive." Most rotating electric machines for industrial use use induction-type rotating electric machines, which are characterized by their robustness and robustness. However, in principle, an electric current also flows through a rotor in an induction-type rotating electric machine, and therefore heat generation of the rotor by t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/28
CPCH02K1/28H02K1/278H02K1/276H02K21/14H02K1/30
Inventor 高岛由晴冈田佳树小川雅史
Owner MITSUBISHI ELECTRIC CORP
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