Drum washing machine
AssigneeSamsung Electronics Co., Ltd.
InventorsDoo-young Ryu, Koan-seog Namkung
Life of this patent
Estimating the term…
Abstract
A drum washing machine with a washing water circulation unit adapted to completely dissolve detergent supplied together with washing water and to enhance washing efficiency. During a washing operation, the washing water contained in a fixed drum is raised or drawn to a center portion of a rear panel of a rotatable drum by turning force of the rotatable drum and then sprayed into the rotatable drum through a nozzle. The circulated washing water accelerates the dissolution of the detergent, and the sprayed washing water directly impinges on laundry, thereby shortening the amount of time required to wet the laundry with the washing water. Therefore, the washing efficiency of the drum washing machine can be remarkably enhanced using only a small quantity of the washing water.
Claims42
A drum washing machine comprising:
- a housing;
- a fixed drum disposed in the housing and containing washing water;
- a rotatable drum having a rear panel and rotatably disposed in the fixed drum;
- and
- a circulation unit supplying the washing water contained in the fixed drum to the rotatable drum, the circulation unit comprising:
- a drawing unit drawing the washing water upwards toward a center portion of the rear panel of the rotatable drum by a turning force of the rotatable drum;
- and
- a spraying unit formed on the center portion of the rear panel to spray the washing water into the rotatable drum;
- wherein the drawing unit is formed on the rear panel of the rotatable drum and provided with a curved water-guiding duct connected between the spraying unit and a periphery of the rear panel to communicate with the fixed drum.
A washing machine, comprising:
- a fixed drum containing washing water;
- a rotatable drum rotatably disposed within the fixed drum, having a cylindrical panel and a rear panel attached to one open end of the cylindrical panel;
- and
- a washing water circulating unit formed on the rear panel of the rotatable drum, having a duct formed between a peripheral portion of the rear panel and a center portion of the rear panel, drawing the washing water from the fixed drum toward the center portion of the rear panel by a turning force generated when the rotatable drum rotates, and spraying the drawn washing water into an inside of the cylindrical panel of the rotatable drum.
A washing machine, comprising:
- affixed drum containing washing water;
- a rotatable drum disposed within the fixed drum, having a cylindrical panel, side openings formed on respective opposite ends of the cylindrical panel, and a rear panel attached to one of the side openings, and rotating about an axial line passing through each center portion of the cylindrical panel, the side openings, and the rear panel;
- a duct unit formed on the rear panel and between a peripheral portion of the rear panel and the center portion of the rear panel, drawing the washing water toward the center portion of the rear panel when the rotatable drum rotates;
- and
- a spraying unit formed in the center portion of the rear panel to communicate with the duct unit, spraying the washing water drawn from the fixed drum through the duct unit into the inside of the cylindrical panel of the rotatable drum.
Dependencies are inferred from the claim text.