回転子および回転電機 - Mitsubishi Electric Corporation

Title:

回転子および回転電機

Document Type and Number:

Japanese Patent JP6854975

Kind Code:

B2

Abstract:

A wedge hole 81 is provided to a wedge 8 and has: a first section 86 having a first inner diameter; and a second section 85 having a second inner diameter greater than the first inner diameter, the second section 85 being disposed further outward in the radial direction of a rotor iron core 2 of a rotor 1 than the first section 86. The provision of the first section 86 and the second section 85 stably reduces flow resistance outside the hole exit of the wedge hole 81. As a result, the volume of a cooling gas discharged from the hole exit of the wedge hole 81 is increased, and the cooling capacity of the rotor 1 is enhanced.

Inventors:

Hitoshi Arakawa
Tetsuya Nagayasu
Hiroaki Ishikawa

Application Number:

JP2020519492A

Publication Date:

April 07, 2021

Filing Date:

March 26, 2019

Export Citation:

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