Control method of washing machine
AssigneeLG Electronics Inc.
InventorsSun Cheol Bae, Ja In Koo, Jae Hyeok Choi, Han Su Jung, Kyung Hoon Kim
Life of this patent
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Abstract
A control method of a washing machine determines the amount of laundry placed in a drum, verifies whether the measured amount of laundry is accurate, and sets control data in the washing machine based on the verified amount of laundry. Also the control method of the washing machine corrects control data set according to the amount of laundry based on kind of the laundry classified according to absorptance of the laundry.
Claims20
A control method of a washing machine comprising a cabinet, a tub provided in the cabinet for containing wash water, a drum rotatably mounted in the tub for receiving laundry through a front of the washing machine and for containing laundry, and a motor for rotating the drum about a shaft that is mounted to a rear of the tub, comprising:
- a receiving step of receiving laundry to the drum;
- a primary amount determination step of determining an amount of the laundry received at the receiving step by measuring a before-water-supply motor load before supplying water to the tub;
- before supplying water to the tub, a data setting step of setting control data, setting the control data comprising setting a drum motion defined as a movement pattern of laundry in the drum based on the amount of the laundry determined at the primary amount determination step;
- a water supply step of supplying water to the tub based on the data setting step;
- a secondary amount determination step comprising determining the amount of the laundry received at the receiving step by measuring an after-water-supply motor load after the water supply step, and estimating the before-water-supply motor load based on the measured after-water-supply motor load;
- a comparison step of comparing the measured before-water-supply motor load with the estimated before-water-supply motor load;
- after the water supply step, a data resetting step of resetting, conditioned on the measured before-water-supply motor load being different from the estimated before-water-supply motor load, the control data based on the amount of the laundry determined at the secondary amount determination step;
- a resetting display step of displaying, on a display located outside of the washing machine, the control data that have been reset conditioned on the measured before-water-supply motor load being different from the estimated before-water-supply motor load;
- and
- a washing step of rotating, after the water supply step and without an additional water supply step, the drum in a predetermined rotation direction based on the control data set in the data setting step or the data resetting step.
A control method of a washing machine comprising a cabinet, a tub provided in the cabinet for containing wash water, a drum rotatably mounted in the tub for receiving laundry through a front of the washing machine and for containing laundry, and a motor for rotating the drum about a shaft that is mounted to a rear of the tub, comprising:
- a receiving step of receiving laundry to the drum;
- a primary amount determination step of determining an amount of the laundry received at the receiving step by measuring a before-water-supply motor load before the water supply step;
- a data setting step of setting control data, setting the control data comprising a drum motion defined as a movement pattern of laundry in the drum based on the amount of the laundry determined at the primary amount determination step;
- a water supply step of supplying water to the tub based on the data setting step;
- a secondary amount determination step comprising determining the amount of the laundry received at the receiving step by measuring after-water-supply motor load after the water supply step, and estimating the before-water-supply motor load based on the measured after-water-supply motor load;
- a comparison step of comparing the measured before-water-supply motor load with the estimated before-water-supply motor load;
- a data resetting step of resetting, after the water supply step and conditioned on the measured before-water-supply motor load being different from the estimated before-water-supply motor load, the control data based on the amount of the laundry determined at the secondary amount determination step;
- a resetting display step of displaying, on a display located outside of the washing machine, the control data that have been reset conditioned on the measured before-water-supply motor load being different from the estimated before-water-supply motor load;
- and
- a washing step of rotating, after the water supply step and without an additional water supply step, the drum in a predetermined rotation direction based on the control data set in the data setting step or the data resetting step,
- wherein the secondary amount determining step comprises:
- an observation motion step of rotating the drum to a reference angle in a direction opposite to the predetermined rotation direction set at the washing step to measure the amount of laundry placed in the drum, and
- an acceleration motion step of rotating the drum in a direction identical to the predetermined rotation direction using potential energy obtained from the laundry in the observation motion step,
- wherein the reference angle of the observation motion step is a predetermined reference angle,
- wherein the secondary amount determination step further comprises a measuring step of measuring after-water-supply motor load during the observation motion step, and
- wherein the after-water-supply motor load measured is obtained by measuring the electric current supplied to the motor so as to rotate the drum to the predetermined reference angle.
Dependencies are inferred from the claim text.