Continuous cycle operation for dishwashers using turbidity senso

Details Continuous cycle operation for dishwashers using turbidity senso Continuous cycle operation for dishwashers using turbidity senso

1996-10-22

1998-09-01

Ludlow, Jan

Cleaning and liquid contact with solids

Processes

Combined

68 1202, 134 252, 134 57D, 134 56D, 134 58D, B08B 302

Patent

active

058006281

ABSTRACT:
A method for washing objects automatically provides the taking of turbidity measurements before and after a portion of water is removed from the dishwasher. This partial drain allows first and second magnitudes of turbidity characteristics, taken before and after the partial drain, to be compared to each other for an analysis of the degree and/or character of particulates within the water of a dishwasher. In certain applications of this method, the turbidity characteristics can be the absolute magnitude of turbidity, the rate of change of turbidity, the absolute magnitude of turbidity variability and the rate of change of the absolute magnitude of turbidity variability. The portion of water removed between the two sets of readings that yield the first and second magnitudes of the selected characteristics is less than the total amount of water within the dishwasher.

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patent: 4810306 (1989-03-01), Noren
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patent: 5545259 (1996-08-01), Suzuki et al.
patent: 5560060 (1996-10-01), Dausch et al.
patent: 5611867 (1997-03-01), Cooper et al.

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