Magnetizing method, rotor, motor, and scroll compressor

A rotor comprising:

• a rotor core having a magnet insertion hole, and
• a permanent magnet provided in the magnet insertion hole,
• wherein when a reference straight line is defined as a straight line connecting two intersections where two straight lines each defining an interpolar portion intersect an outer circumference of the rotor core, at least a part of the permanent magnet is located on an outer side of the reference straight line in a radial direction;
• wherein the permanent magnet is magnetized by:
• placing the rotor so as to face a tooth around which a winding is wound;
• rotating the rotor in a first rotating direction by a first angle θ1 from a rotational position where a center of the magnet insertion hole in a circumferential direction of the rotor core faces a middle portion between both ends of the winding in the circumferential direction and supplying electric current to the winding, and
• rotating the rotor in a second rotating direction opposite to the first rotating direction by a second angle θ2 from the rotational position and supplying electric current to the winding to electric current to the winding,
• wherein the second angle θ2 is smaller than the first angle θ1.

A motor comprising a stator and a rotor provided inside the stator,

• the rotor comprising:
• a rotor core having a magnet insertion hole, and
• a permanent magnet provided in the magnet insertion hole,
• wherein when a reference straight line is defined as a straight line connecting two intersections where two straight lines each defining an interpolar portion intersect an outer circumference of the rotor core, at least a part of the permanent magnet is located on an outer side of the reference straight line in a radial direction;
• wherein the permanent magnet is magnetized by:
• placing the rotor so as to face a tooth around which a winding is wound;
• rotating the rotor in a first rotating direction by a first angle θ1 from a rotational position where a center of the magnet insertion hole in a circumferential direction of the rotor core faces a middle portion between both ends of the winding in the circumferential direction and supplying electric current to the winding, and
• rotating the rotor in a second rotating direction opposite to the first rotating direction by a second angle θ2 from the rotational position and supplying electric current to the winding,
• wherein the second angle θ2 is smaller than the first angle θ1.