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Rotor of rotary electrical machine, rotary electrical machine, and rotor member of rotary electrical machine

A technology for rotating motors and rotors, applied to magnetic circuit rotating parts, synchronous motors with stationary armatures and rotating magnets, electrical components, etc., to achieve the effects of suppressing buckling, improving workability, and reducing shaft pressing force

Active Publication Date: 2017-10-03
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 of rotary electrical machine, rotary electrical machine, and rotor member of rotary electrical machine
  • Rotor of rotary electrical machine, rotary electrical machine, and rotor member of rotary electrical machine
  • Rotor of rotary electrical machine, rotary electrical machine, and rotor member of rotary electrical machine

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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Abstract

A rotor 3 is provided with: a tubular sleeve member 9; a plurality of permanent magnets 10 arranged in a circumferential direction on an outer peripheral surface of the sleeve member 9; and a tubular reinforcing member 12 covering the outer peripheral surfaces of the plurality of permanent magnets 10. The sleeve member 9 has end parts 9b and 9c that are separate from each other in the axial direction, and an inner peripheral surface 9a forming a through-hole 15 through which a shaft parallel to the axial direction passes through. The end part 9b is a flange part. The inner peripheral surface 9a has a tapered surface 9a-1, which has an internal diameter that continuously decreases toward the end part 9c from the end part 9b, and a tapered surface 9a-2, which has an internal diameter that continuously deceases toward the end part 9b from the end part 9c.

Description

technical field [0001] The present invention relates to a rotor for a rotating electrical machine, a rotating electrical machine having the rotor, and a rotor component used in 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 the electric current becom...

Claims

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Application Information

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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