Global Patent Index - EP 0946121 B1

EP 0946121 B1 2000-08-02 - DOSING METHOD FOR ADDING DETERGENT TO A DISHWASHING MACHINE

Title (en)

DOSING METHOD FOR ADDING DETERGENT TO A DISHWASHING MACHINE

Title (de)

DOSIERVERFAHREN ZUM ZUFÜHREN EINES REINIGERS ZU EINER GESCHIRRSPÜLMASCHINE

Title (fr)

PROCEDE DE DOSAGE POUR INTRODUIRE UN DETERGENT DANS UN LAVE-VAISSELLE

Publication

EP 0946121 B1 (DE)

Application

EP 97954371 A

Priority

  • DE 19652733 A
  • EP 9706888 W

Abstract (en)

[origin: DE19652733A1] The invention relates to a commercial dishwashing machine, where the detergent added to the first wash tank (12) of the wash section is controlled by a regulator (29) which controls a dosing device (22). Said regulator (29) is a fuzzy regulator, which in a learning phase determines characteristic influencing values of the system to be regulated. In the learning phase, detergent is continuously added to the wash tank (12) for a predefined period. From this, the change in the water's conductivity over that period is determined. In the subsequent operating phase, the extent to which the conductivity measured deviates from the set value is determined. Dosing takes place by fuzzy regulation dependent on the set value deviation, on the basis of the measured influencing values as fuzzy variable. Because in the learning phase all the influencing values of the diswashing machine, dosage device and detergent are taken into account, dosing is automatically optimally adjusted to prevailing conditions.

IPC 1-7 (main, further and additional classification)

A47L 15/44

IPC 8 full level (invention and additional information)

A47L 15/44 (2006.01)

CPC (invention and additional information)

A47L 15/241 (2013.01); A47L 15/0055 (2013.01); A47L 15/449 (2013.01); A47L 2401/30 (2013.01); A47L 2501/07 (2013.01)

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI NL PT SE

EPO simple patent family

DE 19652733 A1 19980625; DE 19652733 C2 20010301; AT 195062 T 20000815; CA 2275388 A1 19980625; DK 0946121 T3 20001218; EP 0946121 A1 19991006; EP 0946121 B1 20000802; ES 2150293 T3 20001116; GR 3034327 T3 20001229; JP 2001506151 A 20010515; JP 4001391 B2 20071031; NO 992955 A 19990617; NO 992955 D0 19990617; NZ 336803 A 20000327; PT 946121 E 20001229; US 2002117187 A1 20020829; WO 9826704 A1 19980625

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