Patent ID: 7690064

Claim:
A washing and rinsing method in a washer, comprising: a referential rotational speed setting step of setting a referential rotational speed of a drum having a laundry accommodated therein to perform a washing or rinsing on the laundry; a section setting step of setting a plurality of sections; an actual rotational speed setting step of setting an actual rotational speed within a range having a prescribed variation from the referential rotational speed set by the referential rotational speed setting step; and a drum rotating step of rotating the drum according to the actual rotational speed if the actual rotational speed is set by the actual rotational speed setting step, and wherein the actual rotational speed setting step is executed for each of the plurality of the sections set by the section setting step to enable the drum to rotate at different rotational speeds respectively, and the actual rotational speed setting step enables a rotational speed of the drum to be randomly set in each of the plurality of sections.