Samsung Electronics Co., Ltd.

Kenji Kitajima

Yasuyuki Sonoda

Yasumasa Nagasaki

Hiroshi Katsumoto

Hidekazu Funakoshi

Masaki Oshige

Hiroyuki Miyake

Minoru Yoshida

Yukinori Nakagawa

Tomonori Ueno

Tetsuya Ito

Toshihiro Kamii

Katsuyuki Shimakage

Takehiro Nakanishi

Tomoyuki Okuno

Nobuharu Nishikoori

Yoshinori Takashima

Yuji Akita

Nakagawa Yukinori

Hiroshi Wanatabe

Yasunori Kubo

Masahi Oshige

A washing machine capable of independently driving two rotors using one inverter in a simple configuration without supplying a composite current includes an outer rotor having a plurality of switching magnets arranged at intervals in the circumferential direction, and an inner rotor having a plurality of stationary magnets arranged to be radially arranged at intervals in the circumferential direction. When a magnetizing current is supplied to the coil of the stator, the magnetic pole of the switching magnet is inverted and the number of the poles of the outer rotor is switched.

Washing machine

A motor has a two rotors which are independently operated using a single inverter and without being supplied with a complex current. Further the motor is capable of shifting a rotation direction of each of two rotors by performing a magnetizing operation one time and reversing polarities of the shifting magnets when a mode of the motor is shifted from a synchronous mode in which the first rotor and the second rotor rotate in the same direction to a counter mode in which the first rotor and the second rotor rotate in opposite directions, and shifting the mode of the motor to the counter mode while the magnetizing operation is performed one time times and relative positions of the first rotor and the second rotor are changed when the first rotor and the second rotor inertially rotate in the synchronous mode.

Motor and method of controlling motor, washing machine having motor

Provided is a washing machine motor capable of efficiently generating torque by improving a winding factor of coils with a relatively simple configuration. The washing machine motor () has an outer rotor (), an inner rotor (), and a stator (). The outer rotor () and the inner rotor () share coils () of the stator (), and a composite current is supplied to the coils () such that the outer rotor () and the inner rotor () are independently driven. The outer rotor () has forty eight outer magnets () arranged such that the N and S poles thereof are continuously and alternately aligned in the circumferential direction thereof. The inner rotor () has forty-two inner magnets () arranged such that the N and S poles thereof are continuously and alternately aligned in the circumferential direction thereof. The stator () has thirty-six I-shaped cores () and the coils ().

Washing machine motor and washing machine having same

More powerful and convenient cleaners are provided. A cleaner includes a suction fan portion, and a driver driving the suction fan portion, wherein the driver comprises a driving motor having a plurality of rotors configured to rotate, wherein the suction fan portion comprises a first fan rotated by a first rotor and a second fan rotated by a second rotor of the driving motor, wherein the driving motor further comprises a stator commonly used for the first rotor and the second rotor.

Cleaner

Growing community of inventors

Yokohama, Japan

Kenji Kitajima