Control method of washing machine
AssigneeLG Electronics Inc.
InventorsYoungjong Kim, Sangjun Lee
Life of this patent
Estimating the term…
Abstract
A main motor is rotated at a predetermined target speed to determine whether a clutch has been normally operated during switching between a spin mode and an agitation mode. A current value sensed during rotation of the main motor is compared with a predetermined reference value to determine whether the clutch is normally operated. Mode switching is performed or the clutch is re-operated based on the determination result, thereby correctly performing switching between the spin mode and the agitation mode.
Claims20
A control method of a washing machine comprising an inner tub, a pulsator rotatable in the inner tub, a main motor configured to rotate the pulsator, and a clutch configured to engage the inner tub with the main motor or disengage the inner tub from the main motor, the control method comprising:
- (a) executing a spin mode for driving the main motor in a state in which the inner tub is engaged with the main motor to rotate both the inner tub and the pulsator;
- (b) operating the clutch for execution of an agitation mode for driving the main motor in a state in which the inner tub is disengaged from the main motor to rotate the pulsator;
- (c) applying current to the main motor such that the main motor can be rotated at a predetermined target speed;
- (d) comparing a value of the current applied to the main motor with a predetermined reference value to determine whether the agitation mode can be executed;
- and
- (e) executing the agitation mode when a comparison result at step (d) indicates that the current value applied to the main motor is equal to or greater than the reference value,
- wherein step (b) is re-executed when the comparison result at step (d) indicates that the current value applied to the main motor is less than the reference value.
A control method of a washing machine comprising an inner tub, a pulsator rotatable in the inner tub, a main motor configured to rotate the pulsator, and a clutch configured to engage the inner tub with the main motor or disengage the inner tub from the main motor, the control method comprising:
- (a) executing an agitation mode for driving the main motor in a state in which the inner tub is disengaged from the main motor to rotate the pulsator;
- (b) operating the clutch for execution of a spin ode for driving the main motor in a state in which the inner tub is engaged with the main motor to rotate both the inner tub and the pulsator;
- (c) applying current to the main motor such that the main motor can be rotated at a predetermined target speed;
- (d) comparing a value of the current applied to the main motor with a predetermined reference value to determine whether the spin mode can be executed;
- and
- (e) executing the spin mode when a comparison result at step (d) indicates that the current value applied to the main motor is less than the reference value,
- wherein step (b) is re-executed when the comparison result at step (d) indicates that the current value applied to the main motor is equal to or greater than the reference value.
A control method of a washing machine comprising an inner tub, a pulsator rotatable in the inner tub, a main motor configured to rotate the pulsator, and a clutch configured to engage the inner tub with the main motor or disengage the inner tub from the main motor, the control method comprising:
- (a) executing a spin mode for driving the main motor in a state in which the inner tub is engaged with the main motor to rotate both the inner tub and the pulsator;
- (b) stopping the main motor;
- (c) operating the clutch for execution of an agitation mode for driving the main motor in a state in which the inner tub is disengaged from the main motor to rotate the pulsator;
- (d) accelerating the main motor until the main motor reaches a predetermined target speed and then stopping the main motor;
- (e) comparing a maximum value of current applied to the main motor during execution of step (d) with a predetermined reference value to determine whether the agitation mode can be executed;
- and
- (f) executing the agitation mode when a comparison result at step (e) indicates that the current value applied to the main motor is equal to or greater than the reference value,
- wherein step (b) is re-executed when the comparison result at step (e) indicates that the current value applied to the main motor is less than the reference value.
A control method of a washing machine comprising an inner tub, a pulsator rotatable in the inner tub, a main motor configured to rotate the pulsator, and a clutch configured to engage the inner tub with the main motor or disengage the inner tub from the main motor, the control method comprising:
- (a) executing an agitation mode for driving the main motor in a state in which the inner tub is disengaged from the main motor to rotate the pulsator;
- (b) stopping the main motor;
- (c) operating the clutch for execution of a spin mode for driving the main motor in a state in which the inner tub is engaged with the main motor to rotate both the inner tub and the pulsator;
- (d) accelerating the main motor until the main motor reaches a predetermined target speed and then stopping the main motor;
- (e) comparing a maximum value of current applied to the main motor during execution of step (d) with a predetermined reference value to determine whether the agitation mode can be executed;
- and
- (f) executing the spin mode when a comparison result at step (e) indicates that the current value applied to the main motor is less than the reference value,
- wherein step (b) is re-executed when the comparison result at step (e) indicates that the current value applied to the main motor is equal to or greater than the reference value.
Dependencies are inferred from the claim text.