Indesit TIL642 Manuale di servizio - Pagina 10

Sfoglia online o scarica il pdf Manuale di servizio per Piano cottura Indesit TIL642. Indesit TIL642 29. Hobs 2006

2.3. INDUCTION COOKING OPERATING PRINCIPLE:

Induction cooking is based on the physical principle of heating, utilising Foucault current, of electrically

conductive materials

Foucault current is generated when conductive material is exposed to an AC electromagnetic ﬁ eld.

Induction heating exploits the phenomenon of parasitic currents (also known as Foucault currents).

Parasitic currents are produced in conductive materials by variable magnetic ﬂ uxes, such as those produced

by alternating current. Losses depend on the value of the maximum magnetic induction, i.e. the unitary

magnetic ﬂ ux, which is created in the metal element.

Considering equal magnetic force, in practical terms, for the same current in relation to a given geome-

trical conﬁ guration of the conductors the unitary magnetic ﬂ ux is greater the higher the level of magnetic

permeability of the material.

Magnetic materials having very high permeability are utilised for induction heating vessels (because the

induced currents transform energy into heat – Joules).

Low permeability magnetic materials are utilised in the ﬁ eld of electromechanical constructions (transfor-

mers) because they generate very little heat.

The induction coil located under the glass ceramic top is supplied by a converter / generator that transforms

mains power into high frequency AC (from 50Hz to 26,000 Hz).

Service Manual

Hobs - 2006

1 The base of the cooking vessel is

heated by Foucault currents

2 Magnetic base of cooking vessel

3 Glass ceramic surface.

4 Alternating magnetic ﬁ eld

5 Induction coil

6 Converter / Generator

7 Mains (220V)

8 Control PCB / buttons panel

Edition

2006.03.13

Language

English