Apparatus for controlling a soap concentration in cleaning solve

Details Apparatus for controlling a soap concentration in cleaning solve Apparatus for controlling a soap concentration in cleaning solve

1989-01-26

1989-09-19

Nilson, Robert G.

Fluid handling

Self-proportioning or correlating systems

Mixture condition maintaining or sensing

8142, 68 17R, 134 57R, G05D 2102

Patent

active

048671932

ABSTRACT:
A soap concentration control apparatus comprising: a pump for supplying a cleaning solvent to a washing tub; a liquid quantity sensor for measuring a quantity of the solvent supplied to the washing tub by the pump; a soap supplying pump for supplying a soap to the washing tub; a sampling container for sampling the solvent; a soap concentration measuring sensor for measuring a soap concentration in the sampled solvent; a setting device for setting a desired soap concentration; an arithmetic device for calculating an operating time of the soap supplying pump required for making a soap concentration of the solvent in the washing tub approach to the set desired soap concentration on the basis of the measured quantity of solvent, the measured soap concentration and the soap supplying capacity per unit time of the soap supplying pump; and a controller for operating the soap supplying pump on the basis of the calculation result of the arithmetic device, which is useful to maintain a desired soap concentration in the dry cleaning machine thereby providing a constant finish of the laundry.

REFERENCES:
patent: 3013572 (1961-12-01), Lahti
patent: 3014178 (1961-12-01), Dunn
patent: 3729013 (1973-04-01), Anderson

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