What Is a Heater Coil?

Electromagnetic induction heater: A heating controller manufactured based on the principle of electromagnetic induction heating.

Electromagnetic induction heater

Electromagnetic induction heater: A heating controller manufactured based on the principle of electromagnetic induction heating.

Electromagnetic induction heating

The principle of electromagnetic induction heating is produced by induction heating power

(I) Working conditions 1. Power supply voltage AC 380 (V)

2. Working frequency 5 40KHz (KHz)

3.Power: 2-200KVA

(Two) working mode

1. Temperature control mode.

2. Time control mode.

(Three) advantages

It has a soft start function, which reduces the impact on the device during startup and prolongs the service life; when the power is cut off, it adopts the soft stop mode to automatically remove the residual magnetism of the workpiece.

1. Can only be used at 380V.

2. It is strictly forbidden to start the heating device with no load.

3. The product needs regular maintenance.

4. Items susceptible to magnetic fields should be kept away. For example, cardiac pacemakers, hearing aids, magnetic tapes, magnetic cards and other items have a safe distance of 2 meters.

Electromagnetic heating induction energy-saving equipment has always been questioned whether the radiation is harmful to human health. Electromagnetic induction heating adopts the heating principle of magnetic field induced current (also called eddy current). It generates alternating magnetic field through the components of electronic circuit board. When the coil is wound on the surface of ferrous barrel, the barrel cuts the alternating magnetic lines and The metal part of the surface of the barrel produces an alternating current (ie eddy current). The eddy current causes the iron molecules in the barrel to move at high speed and irregularly. The molecules collide and friction with each other to generate thermal energy, which will generate a certain amount of radiation during use. So, what frequency range is harmful to people?

Unit conversion: 1MHz = 1000KHZ = 1000 000Hz, the frequency of the electromagnetic heating core is: 20 ~ 40KHz The range specified by IEEE (International Association of Electronic and Electrical Engineering):

1. In the frequency range from 0.1MHz to 300MHz, the generated magnetic field has a magnetic field strength of more than 3 milli Gauss, which is harmful to the human body. The magnetic field of 90MHz to 300MHz hurts the most, and the magnetic field is closer to 0.1MHz The smaller the damage, the more insignificant the damage to magnetic fields below 0.1MHz. Of course, in the harmful range, its strength is less than 3 milli Gauss, and it is generally regarded as a safe range.

2. The electric field generated in the frequency range from about 1.4MHz to 300MHz has an electric field strength of more than 1mv / m, which is harmful to the human body, the stronger the intensity, the greater the damage, and if the intensity is the same, the electric field from about 27MHz to 300MHz The damage is the largest, and the damage to the electric field below 1.4MHz is equally trivial. In addition, when the electric field and the magnetic field exist alone, they will not have the appearance of traveling outwards like electromagnetic waves, and there will only be fluctuations in the range of their intensity. Electricity

3. The electromagnetic wave is the most harmful from 90MHz to 300MHz. Above 300MHz, the closer it is to 12000MHz, the less the damage is. Therefore, we know that the frequencies of 900MHz and 1800MHz of the Big Brother are in the harmful range. As for the industrial heating electromagnetic movement, the frequency is 20 ~ 40KHz, which belongs to the normal audio signal (20 ~ 40kHz range) and is non-destructive to human body. So please rest assured to use electromagnetic heaters.