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Title:
METHOD AND DEVICE FOR CONTROLLING DETERGENT CONCENTRATION
Document Type and Number:
Japanese Patent JPH05215703
Kind Code:
A
Abstract:

PURPOSE: To adjust the detergent concentration of a detergent liquid solution within a washing bath simply and easily by converting the conductivity of the measured detergent liquid solution to the detergent concentration by using a specific expression and then comparing it with a preset detergent concentration.

CONSTITUTION: A conductivity Y of a washing liquid solution 2 within a washing bath 1 is measured by a sensor 4 and the conductivity Y is converted into a detergent concentration X by an expression Y=aX+b (Y: Conductivity of detergent liquid solution, X: Washing concentration. a: Coefficient peculiar to detergent. b: Conductivity of solvent medium). The detergent concentration X (% concentration) is compared with the upper and lower setting values which a proper concentration range of the set detergent liquid solution 2 indicates, a detergent supply means 5 is controlled based on the comparison result, and then a detergent stock solution 6 is supplied to or cut off to the washing bath 1, thus enabling the detergent concentration X to be controlled. The display, input, etc., of the measured and set values can all be directly executed by using the detergent concentration X, thus enabling a work accompanying the change in a detergent to be simple even if the type of the detergent to be used is changed.


Inventors:
Usui, Eiji
Nishizawa, Kazuo
Application Number:
JP1992000030199
Publication Date:
August 24, 1993
Filing Date:
January 21, 1992
Export Citation:
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Assignee:
SUPIIDE FUAMU CLEAN SYST KK
CLEAN TECHNOL KK
International Classes:
B08B3/08; A47L15/44; D06F39/00; G01N27/10; G05D21/00; G05D21/02; (IPC1-7): B08B3/08; G01N27/10; G05D21/00; G05D21/02