Samsung Electronics Co., Ltd.

Yuji Akita

Hidekazu Funakoshi

Hiroyuki Miyake

Minoru Yoshida

Yasuyuki Sonoda

Yukinori Nakagawa

Yasumasa Nagasaki

Hiroshi Katsumoto

Toshihiro Kamii

Masaki Oshige

Tomoyuki Okuno

Katsuyuki Shimakage

Takehiro Nakanishi

Kenji Kitajima

Nobuharu Nishikoori

Yoshinori Takashima

Hiroshi Wanatabe

Disclosed is a method for reducing vibration during dehydration of a washing machine having a ball balancer provided to a spin basket for accommodating clothes. The disclosed method for reducing vibration comprises: a test rotation step for rotating the spin basket at a measurement rotation count, which is lower than a resonance rotation count and at which the balls of the ball balancer move in a circle; a vibration period measurement step for measuring a vibration period of the spin basket, the vibration period being caused by the eccentric distribution of the clothes in the test rotation step; and an acceleration start timing acquisition step for acquiring acceleration start timing on the basis of the vibration period such that the balls and the eccentrically distributed clothes are arranged to face each other in opposite phases during resonance, when the rotation count of the spin basket passes the resonance rotation count if there is acceleration at a preset determined acceleration speed from the measurement rotation count.

Method for reducing vibration during dehydration, and washing machine using same

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

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Yokohama, Japan

Yuji Akita