Washing machine

Details Washing machine Washing machine

G - Physics

01

N

73/59

G01N 21/59 (2006.01) D06F 39/00 (2006.01)

Patent

CA 2008612

- 1 - ABSTRACT An automatic washing machine is provided with an optical sensor having light emitting and light receiving elements to detect the light permeability of a solution of washing detergent and rinse water in the tank of the machine. The light permeability of water or air in the tank is recorded as a reference value that is used as an initial setting of the optical sensor. As a result, the optical sensor avoids detecting an erroneous light permeability if it is stained or partially obscured by water drops. The machine also has a volume sensor for detecting the volume of laundry to be washed. Washing is controlled not only in accordance with the dirtiness of the laundry as indicated by the light permeability, but also by its volume. The machine can also detect the kind of detergent used so that the washing or rinsing can be controlled accordingly.

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