99637761_A_EN.qxp 19/07/2005 11:49 Page 10
The principle of induction
When an induction element - also called: ‘a
heating zone’, or simply: ‘a coil’ - is switched on, the appropriate utensil is used, and a desi- red level of heating power selected, the elec- tronic circuit unit (‘induction generator’ or ‘in- verter’) powers up the induction coil which creates a magnetic field. This magnetic field continuously changes in terms of frequency and intensity, and this creates induced cur- rents in the bottom of the utensil and ultimate- ly results in heat. The heat is transferred di- rectly to the food being cooked.
Thus, induction heat makes the utensil a di- rect source of heat, featuring high level of effi- ciency with extremely low energy loss and un- paralleled heating level control.
With induction cooking there is very little ‘hea- ting inertia’. Induction cooking elements do not incorporate a heat generating element - unlike convectional electric rings, halogen or radiant elements etc. - therefore, heat levels can be changed very quickly.
Energy efficiency for induction is within range of
Induction cooking elements are sensitive to the utensil type being used :
-if there is no utensil placed on the coil, or if the utensil is not of induction grade, there will be no power emitted by the coil;
-if the utensil is placed partially on the coil, or if it is smaller than the coil, the internal sen- sors will reduce power to the coil; The Princi- ple of Induction
| C | |
A | B | |
+ | ||
| ||
| - |
AInduction coil
BInverter
CInduced currents
-if the utensil is fully removed from the coil, the power output will be instantaneously redu- ced to ‘0’, and, eventually, the controls will turn the element off after a minute, unless the utensil is returned back onto the coil.
When compared to the other methods of co- oking, induction cooking has a very low level of ambient heat, thus makes cooking more pleasurable, with a reduced need for ventila- tion.
Finally, the vitroceramic glass as a cooking surface barely becomes hot and this makes cleaning much easier.
For a proper choice of utensils, please refer to “Utensils for Your Induction”
When using induction elements, some utensils may produce faint humming sound. This is a normal occurrence - the noise is a result of vibrations caused by induced currents.
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