Title:
電動機、送風機および空気調和装置
Document Type and Number:
Japanese Patent JP7038819
Kind Code:
B2
Abstract:
A motor includes a rotor and a stator provided so as to surround the rotor. The rotor has a rotor core having a magnet insertion hole and a permanent magnet disposed in the magnet insertion hole and is rotatable about a rotation axis. The stator has a stator core with a tooth facing the rotor, and a coil wound around the tooth. The permanent magnet has a thickness thicker than or equal to 2.1 mm in a direction in which the permanent magnet faces the stator and is magnetized in a direction of the thickness. A minimum gap AG (mm) between the rotor and the stator, a winding number Nt of the coil around the tooth, an overcurrent threshold Ip (A) for a current flowing through the coil, and a lower limit Hct (kA/m) of a coercive force of the permanent magnet satisfy Hct ≥ 0.4 × (Ip × Nt/AG) + 410.
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Inventors:
Takaya Shimokawa
Hiroki Aso
▲高▼橋 諒伍
Kazuma Nomoto
Hiroki Aso
▲高▼橋 諒伍
Kazuma Nomoto
Application Number:
JP2020526785A
Publication Date:
March 18, 2022
Filing Date:
June 27, 2018
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H02K1/276; H02K21/16
Domestic Patent References:
| JP2013162557A | ||||
| JP2015159691A |
Foreign References:
| WO2017077590A1 |
Attorney, Agent or Firm:
Yoichi Yamagata
Masaru Sato
Masahiko Shinohara
Maeda Minoru
Masaru Sato
Masahiko Shinohara
Maeda Minoru
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