ELECTRIC MOTOR

PROBLEM TO BE SOLVED: To provide an electric motor capable of reducing windage loss without substantially changing a basic shape of a rotor.SOLUTION: In an electric motor including a stator having a plurality of teeth protruding radially inwardly from an inner circumferential surface and coils wound...

Full description

Saved in:
Bibliographic Details
Main Author NAWA MASAMICHI
Format Patent
LanguageEnglish
Japanese
Published 31.05.2018
Subjects
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
DYNAMO-ELECTRIC MACHINES
ELECTRICITY
GENERATION
Online AccessGet full text

Cover

More Information
Summary:PROBLEM TO BE SOLVED: To provide an electric motor capable of reducing windage loss without substantially changing a basic shape of a rotor.SOLUTION: In an electric motor including a stator having a plurality of teeth protruding radially inwardly from an inner circumferential surface and coils wound around a plurality of respective teeth, and a rotor 12 having a plurality of salient poles 23 radially arranged on an outer peripheral surface, each of the salient poles 23 includes an upstream face 25 which is a face on a rotation direction side of the rotor 12 and a downstream face 26 which is a face opposite to the rotation direction of the rotor 12, a space part is formed between the upstream face 25 of one salient pole 23 and the downstream face 26 of the other salient pole, and a plurality of dimples 28 as recesses are provided on the downstream face 26.SELECTED DRAWING: Figure 2 【課題】ロータの基本形状をほぼ変更することなく、風損を低減することが可能な電動モータの提供にある。【解決手段】内周面から径方向内側に向かって突出する複数のティースおよび複数のティースにそれぞれ巻回されたコイルを有するステータと、外周面にて放射状に配置された複数の突極２３を有するロータ１２と、を備え、突極２３は、ロータ１２の回転方向側の面である上流面２５と、ロータ１２の回転方向の反対側の面である下流面２６と、を備え、一方の突極２３における上流面２５と他方の突極における下流面２６との間に空間部を形成し、下流面２６に凹部としての複数のディンプル２８を設けた。【選択図】 図２
Bibliography:Application Number: JP20160227460