How to make electromagnetic heating coil _ electromagnetic heating coil production method

The electromagnetic induction heating coil is the heating coil that we usually use in combination with the electromagnetic heating controller. As for the energy saving effect, the energy saving effect is not only related to the quality of the electromagnetic induction heating controller, but also related to the heating equipment of different industries. . The general power saving effect can reach at least 30%, and the highest can reach more than 70%. The original heating coil: it heats the cylinder by heat conduction, radiation and convection, and the Joule heat generated by the resistor R (the Joule heat is emitted by the thermal vibration energy generated by the atom collision when the electron moves in the resistance) → through the insulation Material → to the heating ring housing → transfer heat to the barrel. After the electric energy is converted into heat, the heat energy that can be transmitted and radiated to the barrel is less than 40%, which causes a large amount of electric energy to be wasted, and also deteriorates the environment of the work shop.

It uses the power electronics technology and electromagnetic compatibility technology to rectify, filter and invert the 220V AC power supply into a high frequency alternating current of 25-30KHZ. The high-frequency alternating current is converted into a high-frequency alternating magnetic field, and the magnetic field hits the metal barrel and is converted into a high-frequency alternating current, and this current causes the heated device to directly heat from the inside. It fundamentally solves the problem of low efficiency of heating by means of heat conduction such as electric heating sheets and electric heating coils. Its heating efficiency is as high as 96%, which reduces the external temperature of the barrel from several hundred degrees to several tens of degrees. At the same time, it can also make full use of the screw friction heat to make the energy more fully utilized.

Used in plastic mechanical heating, the power consumption comparison value under various resin materials, the power saving rate is obvious. In the traditional heating industry, the resistance wire and quartz heating method are generally adopted. However, the conventional heating method has a lower thermal efficiency, and the resistance wire and the quartz mainly rely on the electric current, and then generate heat and then transfer the heat to the barrel. Therefore, it has the effect of heating the article. The heat utilization rate of the heating effect is only about 50%, and the other 50% of the heat is radiated into the air. The electric energy loss of all the conventional resistance wire heating methods is as high as 50% or more. . The electromagnetic induction heating is to generate a magnetic field through the current, so that the iron metal pipe itself generates heat, and the heat insulating material is used to prevent the heat dissipation of the pipe, and the heat utilization rate is as high as 95% or more, and the theoretical power saving effect can reach 50. More than %, but considering that the energy conversion efficiency of different quality electromagnetic induction heating controllers is not the same, and different production equipment and environment, all electromagnetic heating energy saving effects are generally at least 30%, up to 70%

High temperature wire, high temperature plate (epoxy board), heat shrinkable tube (φ4～φ6), 502 glue, nylon cable tie, wire nose (round mouth 4～6, opening 4～5), hydrochloric acid, tin bar

Inductance meter, scissors, tin furnace, crimping pliers, wire stripper, short handle screwdriver, pen, etc.

Such as: φ145 × 801800W220Va, φ 145 × 80 refers to the original electric heating ring diameter 145mm, width 80mm; b, 1800W refers to electric heating coil power; c, 220V refers to electric heating coil voltage.

Calculation of the circumference of the electromagnetic heating coil L=(original electric heating circle diameter φ+17×2)×π+25mm

Note: 17mm refers to the thickness of high temperature cotton; 25mm refers to the length of the pasted electromagnetic ring diameter of the original electric heating ring = outer diameter of the barrel

for example:

1. The original electric heater data is φ145×801800W220VL=(145+17×2)×π+25mm=179×3.14+25=562+25;

2. Cutting the epoxy board according to the calculated data;

3. Attach the epoxy board to the circle with 502 glue, and drill holes according to the graphic style, and wear the cable tie;

4. Wind the high temperature wire counterclockwise, measure the inductance of the coil in time, and wind the coil to the required inductance (see the fifth point). Fix the high temperature wire with the cable tie. Leave 10cm at each end of the high temperature wire and set the wire mark. Heat shrink tubing and make a joint with a round neck nose

5, the width of the epoxy board is generally between 100 ~ 150mm