Loading patent…
AssigneeDaikin Industries, Ltd.
InventorsYoshinari Asano, Tomomi Sakamoto, Nobuyuki Kifuji, Hirofumi Higashi, Shintarou Araki
Estimating the term…
At a time of a heating high-load operation, a harmonic current is flown in an armature winding to induction-heat rare-earth magnets, thus reducing a residual magnetic flux density. Thereby, the number of rotations of a radial gap type motor is improved. The rare-earth magnets are provided near a cooling medium passage extending substantially in parallel with a flow line of a cooling medium, so that the cooling medium recovers heat of the heated rare-earth magnets. At a time of a cooling high-load operation, a greater number of rotations are obtained with respect to the same torque command value, by a field weakening control by means of a current-phase advance.
An air conditioner capable of a heating operation and comprising a compressor, said compressor compressing a cooling medium and having a motor including a rotor and a stator mounted therein, said rotor having a plurality of rare-earth magnets rotatable in a circumferential direction around a shaft extending in a direction of a rotation axis, said stator having an armature winding opposed to said rotor, wherein
A compressor compressing a cooling medium and having a motor including a rotor and a stator mounted therein, said rotor having a plurality of rare-earth magnets rotatable in a circumferential direction around a shaft extending in a direction of a rotation axis, said stator having an armature winding opposed to said rotor, wherein
Dependencies are inferred from the claim text.