Precautions for the use of flameproof electric heaters and maintenance measures

Electric heating is the process of converting electric energy into heat energy. Ever since the discovery of the thermal effects of electricity through wires, many inventors in the world have been engaged in the research and manufacture of various electric heating appliances. The development and popularization of electric heating and other industries, follow a pattern: from the advanced countries gradually extended to the world; from the city to rural development; use development by the collective to the family, to the personal development of products from low-grade to high-grade. In nineteenth Century, electric appliances are mostly poor germination stage, the earliest is used for electric appliance life, 1893 provide iron prototype in the United States and the first to use, then in 1909 the use of the electric cooker, electric heater is placed on the stove, i.e. heating firewood to transfer from the electrical, from electricity energy into heat. But the rapid development of the real electric heating appliance industry is after the invention of the Ni Cr alloy used as an electric heating element. In 1910, the United States first developed an electric iron made of nickel chromium alloy heating wires, which fundamentally improved the structure of electric irons and quickly popularized them by using iron. By 1925, products of electric heating elements had appeared in Japan and became the prototype of modern electric rice cookers. At this stage, the industry has also emerged laboratory electric furnace, melting furnace, heater and other electric products. From 1910 to 1925, it was a great developing stage in the history of electric heating appliance. In the field of household and industry, the appearance and popularization of various kinds of electric heating appliances have been developed rapidly, especially in the family. Therefore, the invention of nickel chromium alloy has laid the foundation for the development of electrothermal appliance industry.

After 20s, there wasn't much time in the new application development, but in this stage, all kinds of electric heating appliances were reset and improved continuously. It has become an improvement stage in the history of electric heating appliances. In the field of household electric heating appliances, all kinds of appliances are designed to be more beautiful, durable and strong, and most of them have automatic temperature and time control.

Precautions for the use of electric heating products

1. Components permit working under the following conditions:

Air relative humidity is not greater than 95%, no explosive and corrosive gases. (except for flameproof heaters)

The working voltage shall be no more than 1.1 times of the rated value, and the case shall be effectively grounded.

3. The insulation resistance is larger than 1M Omega dielectric strength: 2KV/1min.

2, the electric heating pipe should be fixed and fixed, the effective heating area must be completely immersed in liquid or metal solid, prohibit the empty burning. Found the body surface scaling or carbon, should be cleaned and then, to avoid affecting heat and shorten the service life.

3, heat fusible metal or solid salt, alkali, asphalt, paraffin, should reduce the use of voltage for medium after melting, can rise to the rated voltage.

4, heating air, components should be arranged evenly cross, so that the components have good heat dissipation conditions, so that the flow of air can be fully heated.

5, heating nitrate should be considered when safety measures to prevent explosion accidents.

6, the connection part should be placed on the outside of the insulation layer, avoid contact with corrosive, explosive medium, water; wiring should be able to bear long-term connection portion of the temperature and heating load, the wiring screws should avoid excessive force.

7, components should be stored in the dry place, if the insulation resistance is lower than 1M for a long time, you can dry in the oven at about 200 degrees Celsius, or reduce the voltage, heating, until the restoration of insulation resistance.

8, the outlet end of the electric heating tube of magnesium oxide, used in place to avoid contamination and water infiltration, prevent the occurrence of leakage accident.

Daily maintenance of explosion-proof electric heating products

1, the heater running after a period of time (according to the use of the user), unscrew the ignition plug to clean up the carbon deposition, such as ignition Sethe burned off, remove the ignition plug to replace the new.

2, if the carbon accumulation is too much, causing thermal efficiency reduction, should clean the water jacket, heat sink and combustion chamber carbon deposition.

3, if you find the heater host, intake pipe, exhaust pipe and drip pipe are blocked by mud, please clean up and clear up in time. Please keep the heater cabin clean, surrounded by non flammable debris.

4, ensure that the fuel tank, oil pipe and filter oil solenoid valve clean, to prevent dirt blocking the oil circuit.

5, the heater circulation system should be used with the environmental temperature of antifreeze as a circulating heating medium.

6, heaters, pumps should be in accordance with the user's use of regular inspection, if found that the sealing role of water seal parts leakage, or pump start running difficult and other failures, should be promptly repaired.

7, the host heater automatic control box, oil filter and other electrical components are electromagnetic rice according to the general low-voltage electrical maintenance method for maintenance, automatic control box of each parameter in the factory by the manufacturer carefully debugging, users do not change.

8, ensure that the thermal control in good condition, regular inspection, such as micro switch failure or damage, please replace in time.

The main motor 9, heater use, under normal circumstances, the use of 5000 hours without maintenance, such as the use of too much time or other reasons does not work normally, should be maintenance, check brush wear or bearing lubrication, if necessary please add grease or replace the carbon brush.

10. During the warm season, do not use the heater. Please start 4 or 5 times at regular intervals. Each runs for about 5 minutes. Make sure the heater is running properly during the next use.