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Induction cooking, how it works

Induction cooking, how it works

Induction cooking, how it worksand how to use it. Here is a practical guide for those who approach (or want to approach) the world of induction hobs.

Let's start by addressing the issue more boiling, how do you use the wok? No, that of the consumption! Who wants to buy a induction hob it must be aware that it will incur a high electricity expense. Most of the models on the market see absorption peaks that exceed 5 kW / h, without considering that the most complete plans have absorption peaks that go beyond 7 kWh. Despite this strong absorption, a stove induction does not work on electricity! So how does it work? Let's find out right away.

Induction cooking, how it works

Since it absorbs a lot of electricity, when it comes toinduction hobseveryone tends to believe that it is electricity that cooks food. Nothing more wrong. Electricity cooks food on glass ceramic hobs but induction cooking uses electromagnetic fields.

Magnetic induction consists of a strong electromagnetic field capable of triggering the ferrous molecules present in the pots, producing heat and transmitting it to food. For this reason, theinduction hobit can cook without a flame (as in gas cookers), nor heat (as in electric cookers that use a resistance or halogen lamps).

In practice, the bottom of the pot activates the electromagnetic field, so only the pot will receive heat and overheat.

Induction hob, how it's done

After seeinghow an induction hob works, let's see together how it is done.

This device is composed of a coil (a spiral of copper wires) around which an alternating electric current is passed. This step produces an alternating magnetic field in turn.

The variation of the electro-magnetic field attracts, in a discontinuous way, the ferrous molecules (effect of “magnetism”) generating a very rapid motion (electromotive force).

The electromotive force, in turn, generates induced electric currents (known as eddy currents) which, by circulating within the material of the pot placed on the stove, are able to produce heat. In practice, the currents dissipate energy in the form of heat (Joule effect) causing the pot to heat up.

The scheme ofoperationof the induction hob can be abbreviated as follows: the power supply generates an electronic circuit which, thanks to the induction coil, generates a magnetic field capable of dissipating the electromotive force into heat.

For all the information on the pros and cons to analyze, we refer you to the page: induction cooker, advantages and disadvantages.

Induction hob, how to use it

Practical use depends a lot on the model we are dealing with. In any case, thefire zoneis the key to using the induction hob. There are many functions available on an induction hob, let's see the main offers from the various manufacturers.

  • Bridge
    Thanks to this function, it is possible to connect two "burner zones" obtaining a much larger cooking area.
  • Chefmode
    The hob is divided into three zones, each of which has different temperatures.
  • Flexy
    It is the function to be sought, in fact the burner area consists of a single surface and it is the hob that adapts, from time to time, to the size and number of pots.
  • Recognition of pots
    It is a function very similar to the previous one.
  • Perfect Cook type timer or similar
    These are advanced timers that signal when cooking has finished.

When you have an induction cooker in front of you, just press the power button until the control panel composed of touch-sensitive lights appears. The touch keys allow precise cooking adjustment. Each has a corresponding power level.

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  • Capacitive reactance and inductive reactance


Video: How induction cooking works (July 2021).