Title:
Motors and compressors and refrigeration cycle equipment
Document Type and Number:
Japanese Patent JP6351734
Kind Code:
B2
Abstract:
A stator of an electric motor (40) has windings (44) and a stator core (43) in which eighteen teeth (71), around which the windings (44) are wound, are formed circumferentially. A rotor of the electric motor (40) has magnets (72) and a rotor core (46) in which six insertion holes (73), into which the magnets (72) are inserted, are formed circumferentially. The magnets (72) are rare-earth magnets of a grain boundary diffusion type having a residual magnetic flux density Br of from 1.36 to 1.42 T. The total area of magnet-parallel cross-sections (84) of the teeth (71) is from 0.56 times to 0.93 times the total area of tooth-facing surfaces (83) of the magnets (72).
More Like This:
| WO/1995/033596 | MODULAR ELECTRIC MACHINES |
Inventors:
Fujisue Yoshikazu
Kazuya Kumagai
Kazuya Kumagai
Application Number:
JP2016545397A
Publication Date:
July 04, 2018
Filing Date:
July 29, 2015
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H02K1/06; H02K1/16; H02K1/27; H02K21/14
Domestic Patent References:
| JP2012217251A | ||||
| JP2009183069A | ||||
| JP2010154672A | ||||
| JP2013093956A | ||||
| JP2003079084A |
Attorney, Agent or Firm:
Shoji Mizoi
Shingo Kitamura
Shingo Kitamura