What is the heating principle of an induction cooker?

Induction cooker is an alternating magnetic field generated by the components of the electronic circuit board, when the bottom of the iron-containing pot is placed on the stove surface, the pot is cut the alternating magnetic field lines and the metal part at the bottom of the pot produces an alternating current (i.e., eddy current), the eddy current makes the iron molecules of the pot move irregularly at high speed, and the molecules collide and rub against each other to produce heat energy.

The induction cooker can only use iron pots, including ordinary iron pots, stainless steel pots, enamel pots (not ceramic), and aluminum pots cannot be used. The aluminum pot will not heat up for a day if you put it on it!

The principle of an induction cooker.

When a loop is applied with an electric current, the effect is equivalent to that of a magnet rod. Therefore, there is a magnetic field n s pole generation on the coil surface, that is, there is a magnetic flux crossing. If the power source used is alternating current, the magnetic poles of the coil and the magnetic flux traversing the road surface will change.

When a magnetic conductive metal surface is placed above the loop coil, the metal surface induces an electric current. Because there is resistance on the metal surface, the induced electric current causes the metal surface to generate heat energy, which is used to cook food.

The higher the current induced, the higher the heat generated and the shorter the time it takes to cook the food. The larger the induced current, the greater the change in the magnetic flux across the metal surface, and of course, the stronger the magnetic field strength. As a result, the coils that were previously fed AC power need to be wound together for more turns.

Because of the use of high-intensity magnetic field induction, there is no electric current generated on the stove surface, so the stove surface does not generate high temperature when cooking food, making it a relatively safe cooking utensil.

It is the use of the principle of electromagnetic induction, the eddy current generated by electromagnetic induction heats the pot body.

Electricity generates magnetism, magnetism generates heat! Very simple six words.

The induction cooker adopts the principle of electromagnetic heating, so that the pot body is directly heated, with large heat, fierce fire power and fast speed.

The surface of the induction cooker is a heat-resistant ceramic plate, and the alternating current generates a magnetic field through the coil under the ceramic plate, and when the magnetic field lines in the magnetic field pass through the bottom of the iron pot and stainless steel pot, eddy currents are generated, so that the bottom of the pot is quickly heated to achieve the purpose of heating food.

The cooktop is a high-strength, impact-resistant ceramic plate (crystalline glass), and the lower side of the table is equipped with a high-frequency induction coil (i.e., an excitation coil), a high-frequency power conversion device and a corresponding control system, and a pan-bottomed cooking pot is placed on the top of the countertop.

Its working process is as follows: the current and voltage are converted into direct current through the rectifier, and the direct current is changed into high-frequency alternating current that exceeds the audio through the high-frequency power conversion device, and the high-frequency alternating current is added to the flat hollow spiral induction plus ** circle, which generates a high-frequency alternating magnetic field, and its magnetic field lines penetrate the ceramic table plate of the cooktop and act on the metal pot.

Induction cooker is now a more commonly used electrical appliance in the family, it plays a very important role in the kitchen, because its heating speed is very fast, so people will prefer it, but there are many very curious about its heating principle, thenInduction cooker heating principleWhat are the ones? What are the ways to choose an induction cooker? Let's introduce it to you.

First, the principle of induction cooker heating.

1.The induction cooker is an alternating magnetic field generated by the components of the electronic circuit board, when the bottom of the iron-containing cooker is placed on the stove surface, the cooker cuts the alternating magnetic field lines and produces an alternating current (i.e., eddy current) in the metal part at the bottom of the cooker, and the eddy current makes the iron molecules of the cooker move irregularly at high speed, and the molecules collide and rub against each other to produce heat energy (therefore: the heat source of the induction cooker for cooking comes from the bottom of the cooker rather than the heat transmitted to the cooker itself to the pot, so the thermal efficiency is nearly 1 times higher than that of all cookware) The utensils themselves generate heat at high speed and are used to heat and cook food, so as to achieve the purpose of cooking.

2.Induction cooker is an advanced electronic cooker for cooking food in modern homes. It is very convenient to use and can be used for various cooking operations such as boiling, frying, frying, steaming, and stir-frying.

Features: high efficiency, small size, light weight, low noise, energy saving, no pollution to the environment, safety and hygiene, uniform heating during cooking, can better maintain the color, aroma, taste and nutrients of food, is an indispensable new type of electronic cookware to achieve kitchen modernization. The power of the induction cooker is generally around 700-1800W.

Second, the selection method of induction cooker.

1.The power is right.

If it is a family of three, the purchase of 800w induction cooker will be purchased, if the number of people is large, you can choose 1000w to 2000w high-power induction cooker.

2.Hand check.

When purchasing, you can turn the induction cooker over and shake it to see if there is a gap and looseness between the fan blades and the shaft, the shaft and the bearing; After power-on, the motor should have no significant noise or conflict sound, and the rolling of the fan blades should be smooth and free of shaking and rotation.

3.Ensure that the air inlet and outlet holes are unobstructed.

The induction cooker in the work heats up with the heating of the pot, so the induction cooker should be placed in the air circulation, and the air outlet should be more than 250px away from the wall and other items to ensure that there is no object blocking the inlet and exhaust holes of the furnace body.

The effect of different quality induction cooker to us is different, so we must master some of the skills of purchasing, so what are the heating principles and selection methods of induction cooker, and I think everyone understands these after reading the above introduction.