PROBLEM TO BE SOLVED: To provide a permanent magnet rotary electric machine for driving a fan of a washing and drying machine which is applicable to high-speed rotation and whose temperature rise can be suppressed especially in the case of light load.
SOLUTION: The permanent magnet rotary electric machine has a stator on which armature windings are provided in a plurality of slots formed in a stator core. A rotor having permanent magnets inserted into a plurality of permanent magnet insertion holes formed in a rotor core is supported rotatably on the inside circumference of the stator via a prescribed gap. Cut surfaces are formed on the outside circumferential surface between the permanent magnets in the rotor core. When the opening of rotor magnetic cores positioned at the top part of the permanent magnets is denoted as θ1, the opening of teeth width as θ2, and the pitch of slots as θ3, the machine is structured so as to satisfy the condition of θ2≤θ1≤θ3. The ratio (θ2/θ3) is set to ≥55%. When the opening of magnetic pole pieces extended in the circumferential direction at the inside circumferential side of teeth is denoted as θ4, the ratio (θ2/θ4) is set to ≥64%.
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