The working principle of the electric heater is to use an alternating magnetic field to install a primary coil with a larger number of turns and a secondary coil with a smaller number of turns on the same iron core. The voltage ratio of the input to the output is equal to the ratio of the turns of the coil, while the energy remains the same. Therefore, the secondary coil generates a large current under low voltage conditions. For induction heaters, the bearing is a short-circuited, single-turn secondary coil that passes large currents at lower AC voltages, thereby generating large amounts of heat. The heater itself and the yoke are kept at room temperature. Since this heating method induces an electric current, the bearing becomes magnetized. It is important to ensure that the bearing is demagnetized later so that it does not pick up magnetic metal chips during operation. FAG induction heaters have automatic degaussing function. It is the use of metal to generate eddy currents in an alternating magnetic field to heat itself, and is usually used in metal heat treatment. The principle is that when a thicker metal is in an alternating magnetic field, an electric current is generated due to the phenomenon of electromagnetic induction. After the thicker metal generates current, the current will form a spiral flow path inside the metal, so that the heat generated by the current flow is absorbed by the metal itself, which will cause the metal to heat up quickly. This equipment is an energy-saving equipment for pre-heating or secondary heating of fuel oil. It is installed before the combustion equipment to realize the heating of fuel oil before combustion, so that it can reduce the temperature at high temperature (105℃-150℃). The viscosity of the fuel oil can promote full atomization and combustion, and achieve the purpose of saving energy. It is widely used in pre-heating or secondary heating of heavy oil, asphalt, clean oil and other fuel oils.
Precautions during use:
1. Electric heating elements are allowed to work under the following conditions
2. The relative humidity of the air is not more than 95%, and there is no explosive and corrosive gas. (Except explosion-proof electric heater)
3. The working voltage should not be greater than 1.1 times the rated value, and the casing should be effectively grounded.
4. Insulation resistance≥1MΩ Dielectric strength: 2KV/1min.
5. The electric heating tube should be well positioned and fixed, the effective heating area must be completely immersed in liquid or metal solid, and empty burning is strictly prohibited. When it is found that there is scale or carbon on the surface of the tube body, it should be cleaned and reused in time, so as not to affect the heat dissipation and shorten the service life.
6. When heating fusible metals or solid nitrates, alkalis, bitumen, paraffin, etc., the operating voltage should be lowered first, and the rated voltage can be raised only after the medium is melted.
7. When heating fusible metals or solid nitrates, alkalis, bitumen, paraffin, etc., the operating voltage should be lowered first, and the rated voltage can be raised only after the medium is melted.
8. Safety measures should be considered when heating nitrate to prevent explosion accidents.
9. The wiring part should be placed outside the insulation layer to avoid contact with corrosive, explosive media and moisture; the lead wire should be able to withstand the temperature and heating load of the wiring part for a long time, and excessive force should be avoided when tightening the wiring screws.
10. The components should be stored in a dry place. If the insulation resistance is lower than 1MΩ due to long-term storage, it can be dried in an oven at about 200 °C, or the voltage can be reduced and the insulation resistance can be restored.
11. The magnesium oxide powder at the outlet end of the electric heating tube can avoid the infiltration of pollutants and moisture in the use site, and prevent the occurrence of electric leakage accidents.
Application of electric heater in life:
The main products of electric heaters are: heat conduction oil furnace electric heater, explosion-proof heat conduction oil heater, heat conduction oil tank, electric heater, air electric heater, circulating air heater, fan heater, pipeline electric heater, stirrer , stainless steel stirring tank, stainless steel electric heating tube, pipeline heater, reactor electric heater, far-infrared electric heating material, oven, drying oven, electric heating belt, electric heating film, resistance wire, electric heating rod, electric heating ring, electric heating Plates, flanged electric heaters, PTC electric heating materials, semiconductor heating elements, quartz heating tubes, thermocouples, thermostats, temperature instruments.
Electric heater is an electric heating element that uses electricity as a new energy source. Because of its good quality, small size, inexpensive price, convenient installation and long service life, it is very popular among consumers. The internal high-temperature voltage system of the electric heater is composed of a metal tube. When the internal high-temperature voltage is in operation, the central axis in the internal system transfers the high-temperature circulating heating to the electric heater, so that the heating efficiency can be obtained during operation.
Jiangsu Weineng Electric Co.,Ltd is profession manufacturer of various types of industrial electric heater, everything is customized in our factory, Should you have any questions please feel free to come back to us.
Contact: Lorena
Email: inter-market@wnheater.com
Mobile: 0086 153 6641 6606 (Wechat/Whatsapp ID)
Post time: Apr-21-2022