Microcomputer controlled demand/scheduled water softener having

Details Microcomputer controlled demand/scheduled water softener having Microcomputer controlled demand/scheduled water softener having

1983-06-10

1984-09-04

Cintins, Ivars C.

Liquid purification or separation

Processes

Ion exchange or selective sorption

210 85, 210 89, 210 98, 210140, 210143, 364502, B01J 4900

Patent

active

044696027

ABSTRACT:
An improved control for a water softener includes a resin bed sensor for sensing when the resin bed has been depleted to a predetermined percentage of the total resin bed treating capacity. The resin bed sensor is connected to a microcomputer which is also coupled to a flow meter to receive data therefrom indicative of the quantity of treated water leaving the water treatment device over a given period of time. When the resin bed sensor signals the microcomputer that the resin bed has been depleted to the predetermined capacity the microcomputer calculates the total softening capacity of the resin bed. Each day, the microcomputer computes both the total quantity of treated water consumed since the last regeneration and the remaining capacity of the resin bed. The microcomputer also maintains a record in memory of the previous 7 days' usage and the average usage is calculated to establish a soft water reserve value. Should the remaining resin bed capacity be less than the established soft water reserve, the regeneration is initiated.

REFERENCES:
patent: 4237538 (1980-12-01), Le Dall
patent: 4257887 (1981-03-01), Rak et al.
patent: 4275448 (1981-06-01), Le Dall
patent: 4332678 (1982-06-01), Spiegl
patent: 4385357 (1983-05-01), Davis et al.
Operating Manual, "Compute-A-Save System", Water Refining Company, Middletown, Ohio, Jul. 1, 1978.
Sales Literature, "Water King", Sta-Rite Industries, Delafield, Wisc.
Sales Literature, "The Lindsay KNOW-IT-ALL", The Lindsay Corporation.

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