Does anyone know the detailed working principle of an induction cooker?

1. The principle of the induction cooker is the phenomenon of electromagnetic induction, that is, the alternating current is used to generate an alternating magnetic field with a constantly changing direction through the line lead circle, and a vortex current will appear inside the conductor in the alternating magnetic field, which is caused by the vortex electric field driving the movement of carriers in the conductor; The Joule heating effect of the vortex current heats up the conductor and thus heats up.

2. The stove 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, it generates eddy currents, so that the bottom of the pot heats up quickly 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. The process of its work 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 tabletop of the cooktop and make slag bright for metal pots. In the cooking pot Huailiang Chi body due to electromagnetic induction, there is a strong vortex generated, the vortex overcomes the internal resistance of the pot body to complete the conversion of electrical energy to heat energy, and the Joule heat generated is the heat source of cooking.

3. The material of the pot must be iron or alloy steel, with its high permeability to strengthen the magnetic inductance, so as to greatly enhance the vortex electric field and eddy current thermal power. Cookware of other materials will cause abnormal load on the induction cooker due to the excessive or small resistivity of the material, and the automatic protection will be activated and cannot work normally. At the same time, because the iron absorbs the magnetic field sufficiently and the shielding effect is also very good, which reduces a lot of magnetic radiation, so the iron pot is safer than any other material cookware.

In addition, iron is a necessary element that the body needs to ingest for a long time, but the human body can only absorb bivalent iron, which is contained in iron stir-frying, but the reducing vitamins in the body can convert 3-valent iron to 2-valent iron for better absorption.

Since the popularity of induction cooker, many people have begun to study induction cooker, different brands of induction cooker have different characteristics, but the general principle of induction cooker is still the same, let's understand the working principle of induction cooker.

Induction cooker heating principle.

Induction cooker is the application of the principle of electromagnetic induction to heat food. The furnace 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 force in the magnetic field passes through the bottom of the iron pot and stainless steel pot, it generates eddy currents, so that the bottom of the pot is quickly heated to achieve the purpose of heating food. The process of its work is as follows:

The alternating current is 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 ** ring, which generates a high-frequency alternating magnetic field. Its magnetic field lines penetrate the ceramic countertop of the cooktop and act on the metal pot. In the cooking pot, there is a strong vortex generated by electromagnetic induction.

When the vortex overcomes the internal resistance of the pot to flow, it completes the conversion of electrical energy to heat energy, and the Joule heat generated is the heat source for cooking. What induction cooker is the best to improve the quality of the macro.

1. The choice of power: Generally speaking, the higher the power, the better the quality, which depends on the situation. Generally, there are few people in the family, so you can choose an induction cooker with low power.

2. **: Not the higher the quality, the better, when we buy, the brand is secondary, the most important thing is to look at the performance of the induction cooker, some induction cooker has more functions, but the quality is relatively poor, if you use the induction cooker in less place, you can choose a single function, but the quality is good. Induction cooker circuit diagram.

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 back to the road surface will change.

When a magnetic conductive metal surface is placed above the loop coil, the metal surface will induce an electric current (i.e., eddy current), which causes the iron atoms of the pot to move irregularly at high speed, and the atoms collide and rub against each other to produce heat energy.

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, more turns of the coils that were previously passed through the alternating current need to be wound together. Because of the use of high-intensity magnetic field induction, there is no current generation on the stove surface, so the stove surface will not produce high temperature when cooking food.

During use, because the black crystal plate will come into contact with the pot and pan, it will produce high temperature locally, so do not touch the stove surface for a period of time after heating to prevent burns. The above is the relevant content we have introduced to you about the working principle of induction cooker, I hope it can explain to you.

Introduction] Nowadays, many families will use induction cookers instead of gas stoves, which makes the safety factor rise a lot, and use electricity instead of gas, so that it will not lead to accidents caused by gas leaks. Induction cookers are small and easy to use, and have gradually become the main cooking utensils. Induction cooker is one of the modern cooking tools, which can be used for stir-frying, making soup, cooking rice, etc., and can be used in a variety of cooking methods.

We know that induction cooktops use electricity, so how exactly does an induction cooker work?

The application of induction cooker is a scientific principle, which is the principle of eddy current heating, which is the heating generated by the magnetic field induced current. There is an electronic circuit board inside the induction cooker, which is composed of a coil, when the induction cooker is energized, the current generated will pass through this coil, generating the magnetic field we need. We all know that when an induction cooker is used, it can only be used if it is made of iron, and it has no reaction when it is made of other materials.

This is because when the iron pot is placed on the top of the induction cooker, a lot of small eddies will be generated, which can make the iron molecules in the iron pot move rapidly, and heat can be generated through the friction and collision between the iron molecules.

Therefore, there is a misunderstanding here, everyone thinks that the heat generated by the induction cooker is then conducted to the bottom of the pot to heat the food. In fact, this is not the case, it is the heat generated by the movement of the molecules contained in the iron pot that heats the food. Induction cooker users should remember that when buying cooking tools, they must buy iron, otherwise they cannot be used on the induction cooker.

Induction cooker has many characteristics, such as being sleepy in the morning, heating food is very fast, and the temperature of the bottom of the pot can be raised to 300 degrees in 15 seconds; The induction cooker uses the heat of the pot itself, which will not cause pollution due to exhaust gas, which protects the environment; The induction cooker is very easy to clean up, just wipe it with a rag; The induction cooker uses electricity, not gas, which is very safe, even if it forgets to burn dry, it will automatically shut down, giving a kind of protection to the induction cooker; There are many buttons on the induction cooker, and you can choose from a variety of modes such as soup, stir-frying, hot pot, boiling water, etc., which only need to be selected with one click, which is very convenient to use; Compared to gas, electricity is cheaper to use, and the cooking time is shorter, which makes it more economical.

There are so many benefits of induction cooker, are you still not tempted? After understanding the working principle of the induction cooker, I believe that I am more confident in the safety of the induction cooker. Now, there are many brands and styles of induction cookers for everyone to choose from, so when choosing, you must choose one with quality assurance and after-sales service.

You can get it for free

Induction cooker as a modern cooker has appeared more and more in the public kitchen, because it can be used when it is powered on, it can reach the specified temperature in a short time, it is very convenient and clean and does not take up space, so now most housewives are very fond of using induction cooker to cook and cook. Now there are many intelligent designs that make it more convenient for people to use it, so let's take a look at the working principle of the induction cooker and how to repair it if it is broken!

First, the principle of induction cooker

The working principle of the induction cooker is actually the principle of electromagnetic induction eddy current heating, which uses the alternating current to generate an alternating magnetic field that changes the direction through the coil, and the vortex current will appear inside the conductor in the alternating magnetic field, which is generated by the vortex electric field to promote the movement of carriers in the conductor; The Joule heating effect of the vortex current heats up the conductor, so that the induction cooker can heat the food in the pot.

Second, the maintenance of induction cooker

1. Explosion

Sometimes we power on the induction cooker, but there is no response, and we will see that the fuse is blown up when we turn it on, so this is called a bright machine. In case of explosion, we can measure all the electrical cathodes with large resistance values in the circuit, and if there is no problem, replace all the bad parts except IGBT. At this time, the power test machine is used to test whether the B pole 0V of +5V, +15V or +18V and IGBT is normal.

Only when these voltages are normal, can the IGBT be installed. This eliminates most of the explosion faults.

2. The whole machine has no response, but there is no explosion

The reproduction of this situation is generally that the power conversion chip of the induction cooker is burned out, it generally produces 18V voltage, and then becomes +5V voltage for the CPU to work through 7805, without +5V, the CPU does not work, and the whole machine does not work of course. This kind of chip in induction cooker generally uses VIPER12A, VIPER22A, THX203H, etc. Measure the imitation key to tap the periphery of the power conversion chip to see if there are any damaged small devices, if there is a replacement.

3. Failure**

If this happens, first of all, we must figure out the meaning of **, which can basically be found on the Internet, this kind of fault is generally the resistance value of those with large resistance value and large body, which can be measured one by one, and replaced if there is a change value.

4. Dysfunction

This kind of fault is the easiest to repair, generally the key is broken, or the key board is too dirty and leakage, replace the key or clean the key board.

In the process of using the induction cooker, it is inevitable that there will be a variety of failures, so it is still a little beneficial for us to simply understand the maintenance and repair methods of the common faults of the induction cooker, just like if the fault is caused by the dirty key plate, it can be solved only by cleaning the key board. However, if you encounter more tricky things such as the CPU is broken, or it is not heated or heated intermittently, this situation may not be too easy to repair! Then it is the wisest choice to find a professional induction cooker maintenance personnel!

You can get it for free

As follows:

300W - heat preservation.

500w - 100 degrees.

800w - 130 degrees.

1000w - 160 degrees.

1300w - 180 degrees.

1600w - 210 degrees.

1800w - 240 degrees.

2100w - 270 degrees. Cracked Forest.

The principle of induction cooker:Electromagnetic induction phenomenon, that is, the use of alternating current through the coil to generate an alternating magnetic circle field with a constantly changing direction, eddy current will appear inside the conductor in the alternating magnetic field (the reason can refer to Faraday's law of electromagnetic induction), which is caused by the vortex electric field driving the movement of carriers in the conductor (the pot is electrons and not iron atoms); The Joule heating effect of the vortex orange source takes the electric current to heat up the conductor and thus achieve heating.