ELECTRIC MOTOR, BLOWER, AND AIR CONDITIONING DEVICE
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Applicant
Mitsubishi Electric Corporation
Representative
Meinig & Partner mbB Pfenning
Application number
EP18924086A1
Kind
A1
Document number
3817194
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ELECTRIC MOTOR, BLOWER, AND AIR CONDITIONING DEVICE

3817194 - EP18924086A1 - EPO

Application Jun 27, 2018 - Publication May 05, 2021

Takaya SHIMOKAWA Hiroki ASO Ryogo TAKAHASHI Kazuma NOMOTO

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.

Description

Claims

Patent References

Patent Publication Date Title
JP2001178046A N/A N/A
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