The electric heating, temperature measurement and control of the object can be objectively and conveniently realized to heat the heated object, display the temperature in real time and maintain the constant temperature of the workpiece, etc. Their components are as follows: electric heating element + temperature measurement element + temperature control element .
1. The working principle of electric heating The electric current generates heat through the resistance wire, that is, resistance heating, which converts electric energy into heat energy. Its advantages can obtain higher temperature, high thermal efficiency, fast heating rate, environmental protection, no pollution to the environment, can achieve overall heating or partial heating, the heated body can be static or flowing air or liquid, and the application range is very wide.
1) Classification
The main product categories are: resistance heating and far infrared heating.
2) Purpose
Electric heating is widely used in metallurgical machinery, medical treatment, chemical industry, ceramics, electronics, electrical appliances, glass, industrial heating equipment, civil heating appliances and other fields.
a. Heat treatment: such as welding and tempering, use a crawler heater;
b. Heating and smelting of metals: finned electric heating tubes, quartz heating tubes, silicon carbide electric heating plates used in ovens and baking rooms, electric furnace wires of kilns, heating tubes of annealing furnaces, and duct heaters for pipeline applications Wait;
c. Heating and heat preservation of water tank and solution tank: flange type heating pipe (thread electric heating pipe), embedded electric heating pipe, threaded installation single-head electric heating pipe, etc.
d. Plastic, chemical fiber: stainless steel heating ring, stainless steel electric heating plate, cast aluminum heating plate, ceramic heating plate, etc.;
e. Scientific research, chemical industry, machinery and small molds: single-head electric heating pipe, electric heating wire, cast copper heating ring, limit type single-head electric heating pipe, analog work heating table, ceramic heating ring, etc.;
f. Civil heating appliances: electric blankets, greenhouse and floor heating heating wires, heaters, barbecue electric heating pipes, rice steaming electric heating pipes, rice cooker heating plates, etc.;
Second, the temperature measuring element (probe) has thermal resistance and thermocouple.
3. Temperature control element: It can display the temperature through the instrument (the temperature range is optional), and set the upper and lower limits of the temperature. It has a unique anti-interference technology, high precision, good control effect and easy installation.