Patent ID: 6218646
Filing Date: 2001-04-17
Classification: G05D,H05B

Abstract:
A method for adjusting a limiting value of an operating temperature of a cooking unit, said cooking unit comprising a glass or glass-ceramic cooking surface with at least one heated cooking zone, said method comprising the steps of:a) measuring a cooking surface temperature and a turned-on time of the cooking unit to obtain temperature and time value pairs during a respective usage time interval and calculating a cumulative temperature/time load value from said temperature and time value pairs and a cumulative operating time value since setting the cooking unit into operation from the turned-on time during said respective usage time interval;b) storing the cumulative temperature/time load value and the cumulative operating time value;c) storing a predetermined sequence of temperature and time value pairs and determining a permissible temperature/time load for a given usage frequency over a standard service life of the cooking surface from the temperature and time value pairs;d) comparing the cumulative temperature/time load value stored in step b) with the permissible temperature/time load stored in step c) for the respective cumulative turned-on time for a predetermined comparison time interval; ande) determining the limiting value of the operating temperature according to the comparing of step d), whereby an actual temperature/time load for the glass or the glass/ceramic cooking surface over the standard service life of the cooking unit that is permissible is obtained.