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Working Principle And Structure Of Electric Heating
Apr 13, 2018

Electric Radiation Tube is Yancheng Hongchuang own production, design and manufacture of enterprise standard products, the core by the U-axis axial arrangement of the end of the resistance wire and ceramic support frame composition between the core and the external protective sleeve without shielding, heat it is good.

Electric heating pipe resistance wire is made of nickel, chromium alloy, the temperature up to 800 ℃ or more. As the power of electric heating pipe is relatively large, if the user ignores the safety, the fire may occur at any time. Electric heating pipe fire reasons: First, the power of the electric heating pipe on the combustible or on the combustible near the long-term high-temperature baking caused by fire. Second, the electric heating pipe is not installed plug, directly into the wire socket head, which can easily lead to short-circuit and fire. Third, the user does not leave the plug of the electric heating tube unplug, the time is too long, resulting in overheating of the electric heating tube, the adjacent fuel ignited and cause a fire. Fourth, the resistance wire after repeated repairs to continue to use, can cause line overload caused by fire.

At present, the market of household humidifier is divided into ultrasonic humidifier, direct evaporative humidifier and thermal evaporative humidifier. Ultrasonic technology is a kind of mature technology in the world, which has been widely used in various fields. Ultrasonic humidifier ultrasonic high-frequency shock, the water atomized into 1-5 micron ultrafine particles, through the pneumatic device, the water mist spread to the air, so that the air moist and associated with a wealth of negative oxygen ions, fresh air, Improve health, a change in winter heating hot, and create a comfortable living environment. According to experts, the advantages of ultrasonic humidifier, humidification intensity, humidification uniform, high humidification efficiency; energy saving, energy saving, power consumption is only electric heating pipe 1/10 to 1/15; long life, automatic humidity balance , Automatic water protection; both medical atomization, cold bath surface, cleaning jewelry and other functions. The disadvantage is a certain water quality requirements.

Direct evaporative humidifiers are also commonly referred to as pure type humidifiers. Pure humidification technology is just used in the field of humidification of new technologies, pure humidifier through molecular sieve evaporation technology to remove water calcium and magnesium ions, completely solve the "white powder" problem. Through the water curtain washing the air, the air humidification at the same time, clean up the air, and then by the pneumatic device will be moist and clean air to the room, thereby enhancing the environmental humidity. While the new humidifier is also not subject to water quality restrictions; filter evaporator imported single fiber manufacturing, to filter the air and kill bacteria, so that more humidification; with air circulation system, while humidifying the water to wash the air, effective Eliminate air pollution, purify the air, promote indoor air circulation, to a greater extent to ensure human health.

  Hot evaporative humidifier, also known as electric heating pipe humidifier. Its working principle is to heat the water in the heating body to 100 degrees, resulting in steam, with the motor to send out the steam. So the electric heating humidifier is the simplest way to humidification technology, the disadvantage is a larger energy consumption, not dry, low safety factor, the heater is easy to scale. Market outlook is not optimistic. Double-ended electric heating tube compared to the three, the use of electric heating pipe heating in the absence of "white powder" phenomenon, low noise, but the power consumption, easy to scale on the humidifier; pure humidifier without "white" phenomenon Ultrasonic humidifier humidification intensity is large and uniform, low power consumption, long service life, both medical atomization, cold bath surface, cleaning jewelry, and so on, and so on. Function, but there are certain requirements on water quality, the use of a slight "white powder" phenomenon. Therefore, the ultrasonic humidifier and pure type humidifier or recommended products of choice.

Therefore, in use, can not be flammable and explosive items placed in the vicinity of electric heating pipe, must maintain a certain safety distance. Electric heating pipe must be placed on the base of non-conductive non-combustible material; electric heating pipe wire safety cut-off quantity must meet the electric heating pipe capacity requirements, industrial heating pipe in any case to install a separate circuit. Electric heating pipe wire aging should be replaced in time, explosion-proof electric heating pipe circuit is not installed in the electric heating pipe fuses shall not be used; electric heating tube must be used when the care of people, leaving the time to leave the electric heating pipe to be installed, Should be unplugged, in use, in case of power failure, it should be timely plug out, do not forget. For many repairs of the resistance wire, it is best not to use, should replace the new resistance wire. Flammable and explosive materials are strictly prohibited to use electric heating tube drying; electric oven should control the temperature of the device, it is necessary to prevent the temperature is too high, but also to prevent baking time is too long.

The company's development and production of electric radiant tube in addition to supporting the domestic heat treatment equipment manufacturers, users can also design and manufacture of non-standard products of the heater, according to the use of the situation can be divided into: heat-resistant steel seamless tube, Welded pipe, centrifugal casting pipe and non-metallic casing. The use of electric heating tube should pay attention to:

1, the components allowed to work under the following conditions: Air relative humidity of not more than 95%, non-explosive and corrosive gases. B. The working voltage should not be greater than 1.1 times the rated value, the shell should be effectively grounded. C. Insulation resistance ≥ 1MΩ Dielectric strength: 2KV / 1min.

2, electric heating tube should be positioned fixed, effective heat must be fully immersed in liquid or solid metal, is strictly prohibited air burning. Found that the surface of the pipe body scale or carbon, should be promptly removed and then clean, so as not to affect the heat and shorten the service life.

3, heating fusible metal or solid nitrate, alkali, asphalt, paraffin, etc., should first reduce the use of voltage, until the media is melted, to rise to rated voltage.

4, when the air heating elements should be cross-aligned, so that components have a good heat dissipation, so that the flow of air can be fully heated.

5, heating nitrate should be considered when the security measures to prevent the explosion.

6, the wiring part should be placed outside the insulation layer to avoid contact with corrosive, explosive media, water; lead wires should be able to withstand long-term part of the wiring temperature and heating load, tighten the wiring screws should avoid excessive force.

7, the components should be stored in a dry place, if the insulation resistance placed for a long time less than 1MΩ, the oven can be 200 ℃ or so, or reduce the voltage heating, until the restoration of insulation resistance.

8, electric heating pipe outlet of the magnesium oxide powder, in the use of places to avoid contaminants and water infiltration to prevent leakage accidents.


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