CIRCULATION-TYPE WASHING MACHINE Russian patent published in 2008 - IPC D06F23/02 

FIELD: circulation-type washing machine with drum for domestic needs with automatic washing process.

SUBSTANCE: drum of washing machine rotates partly in washing solution. Part of said washing solution is fed by pump through longitudinal branch pipe with nozzles to perforated drum. Branch pipe is formed curved along drum radius. Drum outer surface is provided with grooves for preventing liquid from flowing down over said surface. Grooves are defined by longitudinal ribs fixed between rows of perforation openings so as to embrace two rows of openings. Grooves may be defined by slots stamped within drum metal so as to embrace two rows of openings and alternating with rows of shallow openings.

EFFECT: intensified separation of contaminants from cloth owing to enhanced contacting of washing solution with said cloth.

2 dwg