Self-optimizing detergent controller for minimizing detergent se

Details Self-optimizing detergent controller for minimizing detergent se Self-optimizing detergent controller for minimizing detergent se

1995-01-12

1996-09-17

Warden, Jill

Cleaning and liquid contact with solids

Processes

Combined

134 252, 134 56D, 134 57D, 134 58D, B08B 704

Patent

active

055564780

ABSTRACT:
An apparatus and method for programming a detergent controller to vary the detergent concentration set-point according to the time of day and to achieve detergent concentration levels quickly without incurring overshoot. Thus, the present invention insures that the warewashing machine is operated at optimum efficiency and cost. To vary the set-point according to the time of day, the invention combines the features of a microprocessor, a clock and a controller into one unit. The user enters the time setting and set point into the controller. The microprocessor then compares the real-time clock signal with the user time settings and outputs an appropriate set-point value from the microprocessor to the controller. To achieve detergent concentration levels quickly without incurring overshoot, the controller senses the detergent concentration and dispenses the proper detergent level to the warewashing machine according to a predetermined detergent feed time based on the previous response time and the programmed set-point. Thus, the controller can change the response function if and when conditions change.

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