Apparatus and method for rolling clothes in an automatic washer

摘要

A method and apparatus for washing cloth items in an automatic washer is provided wherein the automatic washer includes a wash basket defining a wash chamber and an impeller located within the bottom of the wash chamber. The method includes loading cloth items into the wash chamber and then supplying a quantity of wash liquid into the wash chamber sufficient to moisten the cloth items but insufficient to cause the cloth items to lose frictional engagement with the impeller as the impeller oscillates. The impeller is oscillated to apply a drag force to the cloth items in contact with the impeller such that the cloth items in contact with the impeller move angularly along an arc-like path. Angular movement of the cloth items disposed along the bottom of the wash chamber beyond the outer periphery of the impeller is impeded such that relative angular motion is created between the cloth items disposed along the periphery of the impeller and the cloth items disposed immediately above the impeller. Cloth items move radially inward along the impeller, move upwardly in the center of the wash chamber, move radially outwardly along the top of the wash chamber and move downwardly along the side wall of the wash chamber in a pattern which may be referred to as an inverse toroidal rollover path or pattern. This inverse toroidal rollover pattern is created by direct contact between the oscillating impeller and the cloth items supported above the impeller.