WASHING APPLIANCE WITH DEDICATED WATER-SOFTENER
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United States of America Patent
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Issued Date -
Nov 29, 2012
app pub date -
Feb 7, 2011
filing date -
Feb 8, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The softener is based on a capacitive-deionization (CDI) cell, in which the hardness ions are extracted, and disposed of still intact, in concentrated form. The softener is combined with a chelate to inhibit precipitation, in the appliance, from the concentrated effluent. The chelate being citric acid, the acidity is effective to keep the hardness ions in solution. The purify and regenerate modes of operation of the softener can be timed to coincide with the washing and rinsing cycles of the appliance, whereby the presence of the softener does not affect the speed and performance of the appliance.
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