초록 ▼

The invention relates to a laundry treatment apparatus like washing machines, laundry dryers or a washer-dryers with a rotatably mounted drum (6) with an at least approximately horizontal axle and with a drive motor (10) structured as a synchronous motor (10) energized by permanent magnets arranged

The invention relates to a laundry treatment apparatus like washing machines, laundry dryers or a washer-dryers with a rotatably mounted drum (6) with an at least approximately horizontal axle and with a drive motor (10) structured as a synchronous motor (10) energized by permanent magnets arranged on the drum (6) shaft, the stator (16) of the motor (10) being provided with a winding (18) which is energized by a converter. In order to optimize the motor in such machines in respect of energy consumption, noise development and costs it is proposed to design the winding (18) as a single pole winding, whereby the number of stator poles (27) and of the magnet poles (23) is different, and to utilize a frequency converter (104) as the converter the output voltage of which being set such the continuous currents are generated in all winding strands.

대표청구항 ▼

1. An apparatus for treating laundry, comprising:a drum; a substantially horizontal axle for rotatably mounting the drum; a synchronous electric motor comprising a rotor comprising a predetermined number of permanent magnets and a stator including a number of stator poles differing from the number o

1. An apparatus for treating laundry, comprising:a drum; a substantially horizontal axle for rotatably mounting the drum; a synchronous electric motor comprising a rotor comprising a predetermined number of permanent magnets and a stator including a number of stator poles differing from the number of magnets and a single pole stator winding including a predetermined number of strands; and a frequency converter for energizing the stator winding and providing an output voltage for generating continuous currents in all winding strands.