Title:
PERMANENT MAGNET SYNCHRONOUS MOTOR, COMPRESSOR, AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/176308
Kind Code:
A1
Abstract:
In this permanent magnet synchronous motor 3 of the present invention, a stator 3b has an annular stator yoke 31, a plurality of stator teeth 32 extending from the stator yoke 31, and slots 40 formed between the stator teeth 32, wherein the stator teeth 32 each have: a stator tooth base 32a around which a winding 50 is wound; and a stator tooth end portion 32b forming, at the end of the stator tooth base 32a, a facing surface 35 facing a rotor 3a. At least two small holes 70a, 70b are arranged side by side in a direction along the facing surface 35 in the stator tooth end portion 32b. The small holes 70a, 70b are arranged within the width dimension of the stator tooth base 32a in the circumferential direction and beyond the width dimension in the circumferential direction, thereby being able to reduce variation in the tooth direction (radial direction) and obtain low noise due to low vibration and high efficiency.
Inventors:
NISHIYAMA NORIYOSHI
Application Number:
PCT/JP2021/043827
Publication Date:
August 25, 2022
Filing Date:
November 30, 2021
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H02K7/14; H02K1/14; H02K1/16
Foreign References:
| JP2010220324A | 2010-09-30 | |||
| JP2010114952A | 2010-05-20 | |||
| JP2014155315A | 2014-08-25 | |||
| JP2003153471A | 2003-05-23 |
Attorney, Agent or Firm:
ABE Shinichi et al. (JP)
Download PDF: