Drum type washing machine and controlling method thereof
AssigneeLG Electronics Inc.
InventorPhal Jin Lee
Life of this patent
Estimating the term…
Abstract
A drum type washing machine and controlling method thereof is provided. In the drum type washing machine, a tub is provided, a drum is installed in the tub to rotate about a horizontal axis, a driving motor rotates the drum, a key input unit receives a washing instruction from a user, a memory stores a reference value for an eccentricity of the drum, a microcomputer controls washing and rinsing operations in accordance with a procedure set by the user upon an input of a start command through the key input unit and its prevents repetition of a preliminary spin drying operation using a measured eccentricity of the drum, and a driving control unit controls velocity of the driving motor in accordance with a control signal of the microcomputer.
Claims12
A controlling method of a drum type washing machine having a microcomputer programmed to control operations, the method comprising:
- performing washing and rinsing operations in accordance with a start command inputted by a user and a procedure selected by the user;
- performing a first eccentricity measurement operation;
- performing a first preliminary spin drying operation if the first eccentricity measurement is smaller than a first reference value;
- performing a second eccentricity measurement operation and comparing a second eccentricity measured at the second eccentricity measurement operation with the first reference value;
- re-performing the first eccentricity measurement if the second eccentricity is larger than the first reference value;
- comparing a first eccentricity measured at the re-performed first eccentricity measurement with a second reference value;
- performing a second preliminary spin drying operation without re-performing the first preliminary spin drying operation if the first eccentricity is smaller than the second reference value;
- and
- performing a main spin drying operation.
A controlling method of a drum type washing machine having a microcomputer programmed to control operations, the method comprising:
- performing washing and rinsing operations according to an inputted condition;
- proceeding to a spin drying process right after the rinsing operation, and simultaneously performing a first eccentricity measurement operation on a drum of the drum type washing machine;
- comparing an eccentricity measured at the first eccentricity measurement operation with a first reference value;
- performing a first preliminary spin drying operation according to the compared result;
- performing a second eccentricity measurement operation;
- determining whether an eccentricity measured at the second eccentricity measurement operation is larger than a second reference value, and, if so, repeating the first eccentricity measurement operation until the eccentricity becomes smaller than the first reference value;
- performing a second preliminary spin drying operation without repeating the first preliminary spin drying operation;
- performing a third eccentricity measurement operation;
- starting a main spin drying operation according to a comparison result between an eccentricity measured at the third eccentricity measurement operation and a third reference value;
- and
- terminating the whole spin drying process after the main spin drying operation.
Dependencies are inferred from the claim text.