The present invention relates to a control method for localizing a inner tank automatically. Is inner tub installed bottom locating hole, localization pin outer tub bottom is installed, the structure capable of expanding and contracting the localization pin on the localization pin is installed. When the inner tub is rotated to a certain position, orientation pin is released, the localization pin reaches into the inner tank bottom. Inner tub is rotated subsequently, the locating hole is rotated to a position that fits exactly with the localization pin, localization pin is inserted into the locating hole, the inner tub is locked. After the localization pin is released, when the inner tub or continues to rotate under the action of inertia, or the inner tank will continue to rotate under the drive of the motor, the inner tub rotates to a position where locating hole matches exactly the localization pin, localization pin is inserted into the locating hole, automatic localization of the inner tank, to achieve a lock. Drain hole and can also ensure a sealing of the discharge control structure to prevent water leakage.
.FIELD 1