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1. (WO2018054617) METHOD FOR BOIL DETECTION AND INDUCTION HOB INCLUDING A BOIL DETECTION MECHANISM

Pub. No.:    WO/2018/054617    International Application No.:    PCT/EP2017/070724
Publication Date: Fri Mar 30 01:59:59 CEST 2018 International Filing Date: Thu Aug 17 01:59:59 CEST 2017
IPC: H05B 6/06
Applicants: ELECTROLUX APPLIANCES AKTIEBOLAG
Inventors: TERRACCIANO, Nicola
JEANNETEAU, Laurent
VIROLI, Alex
NOSTRO, Massimo
CHRISTIANSEN, Svend, Erik
Title: METHOD FOR BOIL DETECTION AND INDUCTION HOB INCLUDING A BOIL DETECTION MECHANISM
Abstract:
The invention relates to a method for boil detection at a heating zone of an induction hob (1), the method comprising the steps of: − disabling (S110) a power control mechanism of the induction hob by setting the frequency of the AC-current provided to an induction coil of the induction hob to a fixed value; − measuring (S120) values of an electrical parameter provided within the induction hob (1); − interpolating (S130) the measured electrical parameter values by gathering a plurality of values of the electrical parameter within a time window and calculating the average value of said gathered plurality of values thereby obtaining interpolated electrical parameter values. − calculating (S140) a gradient measure indicative for the differential change of the interpolated electrical parameter values over time; − determining (S150) the boil point based on the calculated gradient measure.