Washing machine and method of controlling the same using an AC motor
AssigneeSamsung Electronics Co., Ltd.
InventorsHyun Oh Kim, Jun Hyun Park, Sung Mo Lee
Life of this patent
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Abstract
A washing machine includes an alternating current (AC) motor which generates torque, a clutch assembly which selectively transfers the torque to a rotating tub and a pulsator, a speed detector which detects a rotary speed of the clutch assembly, and a controller configured to repetitively perform operating and stopping the operating of the AC motor based on a predetermined target speed and the rotary speed of the clutch assembly in a spin-drying operation. The controller gradually increases the torque of the AC motor while operating the AC motor.
Claims20
A washing machine comprising:
- an alternating current (AC) motor configured to generate torque;
- a clutch assembly configured to selectively transfer the torque to a rotating tub and a pulsator;
- a speed detector configured to detect a rotary speed of the clutch assembly;
- and
- a controller configured to repetitively perform operating and stopping the operation of the AC motor based on a predetermined target speed and the rotary speed of the clutch assembly during a spin-drying operation,
- wherein the controller is configured to gradually increase the torque of the AC motor while operating the AC motor during the spin-drying operation.
A method of controlling a washing machine, comprising:
- operating an AC motor that generates torque during a spin-drying operation;
- detecting a rotary speed of a clutch assembly that transfers the torque to a rotating tub and a pulsator;
- and
- repetitively performing operating and stopping the operating of the AC motor based on a predetermined target speed and the rotary speed of the clutch assembly during the spin-drying operation,
- wherein the operating of the AC motor comprises gradually increasing the torque of the AC motor during the spin-drying operation.
Dependencies are inferred from the claim text.