Title:
電動機、圧縮機および空気調和装置
Document Type and Number:
Japanese Patent JP7019033
Kind Code:
B2
Abstract:
A motor includes a rotor rotatable about a rotation axis, and a stator surrounding the rotor so as to form an air gap between the stator and the rotor. The rotor has a rotor core having a magnet insertion hole and a rare earth magnet provided in the magnet insertion hole. The rotor core has a plurality of slits on an outer side of the magnet insertion hole in a radial direction about the rotation axis. Each of the plurality of slits has a length in the radial direction which is longer than a length in a circumferential direction about the rotation axis. The plurality of slits have a uniform minimum distance to the magnet insertion hole. When the minimum distance is expressed as T and the air gap is expressed as G, 2.75≤T/G≤5.25 is satisfied.
Inventors:
Atsushi Ishikawa
Application Number:
JP2020512962A
Publication Date:
February 14, 2022
Filing Date:
April 10, 2018
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H02K1/276; H02K1/22; H02K21/14
Domestic Patent References:
| JP2018057155A | ||||
| JP2008187778A | ||||
| JP2011097754A | ||||
| JP2013255321A | ||||
| JP2015208053A | ||||
| JP2014187748A | ||||
| JP2000156946A | ||||
| JP11206051A | ||||
| JP2017194064A |
Foreign References:
| WO2014069438A1 |
Attorney, Agent or Firm:
Yoichi Yamagata
Masaru Sato
Masahiko Shinohara
Maeda Minoru
Masaru Sato
Masahiko Shinohara
Maeda Minoru
Previous Patent: Polyphenylene ether, its composition and manufacturing method
Next Patent: Conveyor device with rails with reinforcements
Next Patent: Conveyor device with rails with reinforcements