Title:
ELECTRIC MOTOR HAVING PERMANENT MAGNET AND COMPRESSOR INCLUDING SAME
Document Type and Number:
WIPO Patent Application WO/2018/169232
Kind Code:
A1
Abstract:
The present invention relates to an electric motor having a permanent magnet and a compressor including the same. An electric motor having a permanent magnet according to the present invention comprises: a stator; and a rotor rotatably disposed and spaced a preconfigured gap apart from the stator, wherein the rotor comprises a rotating shaft, a permanent magnet arranged concentrically to the rotating shaft, and a permanent magnet support means supporting the permanent magnet; the permanent magnet has a cylindrical shape and is magnetized to have polar anisotropy such that a magnetic field is formed on the magnet's surface facing the gap but is not formed on the magnet's surface opposite to the gap; and the permanent support means is formed to construct no flux path in the permanent magnet and configured to connect the rotating shaft to the permanent magnet. Thus, the rotor can have a reduced weight with the consequent suppression of vibration and noise occurrence.
Inventors:
KIM KIMAN (KR)
EUM SANGJOON (KR)
RYU DONGSEOK (KR)
EUM SANGJOON (KR)
RYU DONGSEOK (KR)
Application Number:
PCT/KR2018/002391
Publication Date:
September 20, 2018
Filing Date:
February 27, 2018
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H02K1/27; F04B35/04; F04B35/06; H01F7/02; H01F41/02; H02K5/24
Foreign References:
| KR100820176B1 | 2008-04-07 | |||
| KR20040065530A | 2004-07-22 | |||
| KR19990013754U | 1999-04-26 | |||
| KR20040094156A | 2004-11-09 | |||
| JPH0865932A | 1996-03-08 |
Other References:
See also references of EP 3598609A4
Attorney, Agent or Firm:
PARK, Jang-Won (KR)
Download PDF: