What are the characteristics of air duct heater

Hot blast stove is a very common kind in heating furnace. The use of electric heating elements can be designed and distributed according to the temperature requirements of users for heating medium. Its advantage is that it converts electric energy into heat energy and directly transmits the temperature to the interior of the heated object, so as to improve the work efficiency. On the heated medium, the speed of raising the temperature to the medium is very fast, and only a small amount of residual gas and objects are left in the whole or part of the specific range, which can keep the heating surface clean, do not affect the subsequent operation, and at least reduce air pollution.

In the R & D laboratories and scientific research institutes of enterprises, it is widely used in the production processes of transistors, appearance quenching of mechanical parts, melting of some alloys, and electric heaters are also widely used. Its development can better reflect its diversity, versatility, convenient installation and other advantages, and can provide better services for the production and life of all sectors of society.

1. Electric air heaters are generally divided into resistance electric heaters and ceramic electric heaters.

2. Bare wire and tubular electric heaters.

3. In the actual production process, there are resistance wire electric heater and ceramic electric heater.

4. The air heater must be connected to the forced draft fan. Power supply sequence: shutdown steps of forced draft fan - electric heater: electric air heater - forced draft fan (after 1 minute). Do not turn on the air heater when the air pump cannot be turned on.

5. The metal pipes for installing air heater and air heater must be well grounded.

6. Incombustible materials shall be used as thermal insulation materials for pipelines within 0.8m in front of and behind the air heater.

The electric heater of air duct is mainly used for air heating in the air duct. Its specifications are divided into three forms: low temperature, medium temperature and high temperature. The common thing is to support the electric heating pipe with steel plate to reduce the vibration of the electric heating pipe. The over temperature control device is installed in the terminal box. In addition, in terms of control, a connecting device is set between the fan and the heater. After the electric heater is started, a differential pressure device shall be added at the front and rear of the heater to ensure that there will be no fan failure. The gas pressure heated by the channel heater is generally 0, and the medium temperature is below 260 high temperature type 500.