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US 2003/0196278 A1Published application
Static and dynamic turbidity sensing in a washing appliance
OwnerAnthony L. Durfeeinventor
Life of this patent
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Abstract
A method is provided for measuring detergent and soil in wash water of a dishwashing or clothes washing appliance. A turbidity sensor is used to sense or measure the soil in the water in a static state, and to sense or measure the detergent in the water during a dynamic state. The turbidity sensor generates a corresponding output signal which is sent to a microprocessor to automatically adjust machine cycles to increase operational efficiencies.
Claims25
A method of measuring detergent and soil in wash water of a washing appliance, comprising:
- sensing soil in the water when the appliance is in a static state;
- and
- sensing detergent in the water when the appliance is in a dynamic state.
A method of determining the presence of detergent and soil in wash water of a washing appliance, comprising:
- measuring the water turbidity during a static state, with the turbidity correlating to soil in the water;
- and
- measuring water turbidity during a dynamic state, with the turbidity correlating to detergent in the water.
Dependencies are inferred from the claim text.