Title:
STATOR, MOTOR, COMPRESSOR, AND REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/112078
Kind Code:
A1
Abstract:
The stator core of this stator has an annular core back and a plurality of teeth extending from the core back to the inside in the radial direction and fits in the inside of a shell. The outer circumference of the core back has a first contact portion and a second contact portion which make contact with the shell and a non-contact portion which does not make contact with the shell. In the circumferential direction, the first contact portion is positioned on a first side of the non-contact portion and the second contact portion is positioned on a second side of the non-contact portion. The base portion of a first tooth of the plurality of teeth has a first corner portion on the first side and a second corner portion on the second side. The shortest distance La from the first corner potion to the outer circumference and the shortest distance Lb from the second corner portion to the outer circumference satisfy the relationship of La < Lb. The shortest distance Da from the first corner portion to the first contact portion and the shortest distance Db from the second corner portion to the second contact portion satisfy the relationship of Da > Db. The curvature radius Ra of the first corner portion and the curvature radius Rb of the second corner portion satisfy the relationship of Ra < Rb.
Inventors:
HIGASHI YUKI (JP)
Application Number:
PCT/JP2021/045746
Publication Date:
June 22, 2023
Filing Date:
December 13, 2021
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02K1/16
Domestic Patent References:
| WO2016080284A1 | 2016-05-26 |
Foreign References:
| JPS62217843A | 1987-09-25 | |||
| JP2019030056A | 2019-02-21 |
Attorney, Agent or Firm:
YAMAGATA Yoichi et al. (JP)
Download PDF: