Method of operating a washing machine using steam

A method for operating a washing machine having a tub with a drum rotatably mounted in the tub and configured to hold a fabric load and a liquid recirculation system configured to recirculate liquid from the tub to the drum comprises a pre-wash step; a heating step comprising introducing steam into...

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Bibliographic Details
Main Authors WONG NYIK SIONG, HARDAWAY ANTHONY H, VAIDHYANATHAN RAVEENDRAN, LUCKMAN JOEL A
Format Patent
LanguageEnglish
Published 13.12.2007
Subjects
FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
LAUNDERING
LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILEARTICLES
TEXTILES
TREATING TEXTILE MATERIALS BY LIQUIDS, GASES OR VAPOURS
TREATMENT OF TEXTILES OR THE LIKE
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Summary:A method for operating a washing machine having a tub with a drum rotatably mounted in the tub and configured to hold a fabric load and a liquid recirculation system configured to recirculate liquid from the tub to the drum comprises a pre-wash step; a heating step comprising introducing steam into the tub and/or the drum; and a washing step comprising washing the fabric load with a second volume of liquid greater than the first volume of liquid. The pre-wash step can comprise recirculating a first volume of liquid between the tub and the drum without submerging a portion of the drum in the liquid and rotating the drum. In another embodiment, the pre-wash step can comprise recirculating a first volume of liquid between the tub and the drum to achieve a fabric load weight to liquid weight ratio of between about 1:0.5 and 1:2.7.
Bibliography:Application Number: US20060450636