Washing machine
AssigneesKabushiki Kaisha Toshiba, Toshiba Home Appliances Corporation, Toshiba Consumer Electronics Holdings Corporation
InventorsTomokazu SETO, Tsuyoshi SHIGA
Life of this patent
Estimating the term…
Abstract
Disclosed is a washing machine comprising a permanent magnet motor that includes a rotor and that drives rotation for execution of a wash operation; a permanent magnet that is provided on the rotor side and that has a level of coercivity allowing variation in an amount of magnetism with ease, and a magnetism controller that produces an excitation current to vary the amount of magnetism of the permanent magnet; wherein the magnetism controller, when interrupting or stopping an ongoing operation, interrupts or stops the ongoing operation after magnetizing the permanent magnet.
Claims18
A washing machine comprising:
- a permanent magnet motor that includes a rotor and that drives rotation for execution of a wash operation;
- a permanent magnet that is provided on the rotor side and that has a level of coercivity allowing variation in an amount of magnetism with ease, and
- a magnetism controller that produces an excitation current to vary the amount of magnetism of the permanent magnet;
- wherein the magnetism controller, when interrupting or stopping an ongoing operation, interrupts or stops the ongoing operation after magnetizing the permanent magnet.
A washing machine comprising:
- a permanent magnet motor that includes a rotor and that drives rotation for execution of a wash operation;
- a permanent magnet that is provided on the rotor side and that has a level of coercivity allowing variation in an amount of magnetism with ease, and
- a magnetism controller that produces an excitation current to vary the amount of magnetism of the permanent magnet;
- wherein the magnetism controller magnetizes the permanent magnet immediately after supply of power.
A washing machine comprising:
- a permanent magnet motor that includes a rotor and that drives rotation for execution of a wash operation;
- a permanent magnet that is provided on the rotor side and that has a level of coercivity allowing variation in an amount of magnetism with ease, and
- a magnetism controller that produces an excitation current to vary the amount of magnetism of the permanent magnet;
- wherein the magnetism controller, when demagnetizing the permanent magnet, magnetizes the permanent magnet prior to the demagnetization.
Dependencies are inferred from the claim text.