Patent ID: 7430884
Filing Date: 2008-10-07
Classification: D06F

Abstract:
1. A washing machine comprising: a washing volume for receiving laundry; an ozone inlet for providing ozone to the washing volume; an ozone outlet for receiving gaseous ozone from the washing volume; an ozone sensor proximate to the ozone outlet for measuring the gaseous ozone passing through the ozone outlet: and a controller connected to the ozone sensor to receive at least one ozone measurement from the ozone sensor during a washing cycle and to determine a degree of disinfection by the washing cycle, wherein the washing cycle comprises at least two rinse stages and the at least one ozone measurement is made during a second rinse stage; wherein said washing volume includes a gaseous section and a washing water section with said ozone outlet in fluid communication with said gaseous section for receiving the gaseous ozone from the washing volume.