The working principle of halogen infrared heating lamp is mainly based on the following aspects:
Filament heating: There is a filament inside the halogen infrared heating lamp. When current passes through the filament, the filament will heat up due to the existence of resistance. The filament is usually made of high-temperature resistant materials such as tungsten filament, which can quickly heat up to a higher temperature after power is turned on.
Halogen cycle: The lamp is filled with halogen gas, such as iodine, bromine, etc. During the heating process of the filament, the tungsten atoms on the surface of the filament will evaporate due to thermal motion. The halogen gas reacts chemically with the evaporated tungsten atoms to form tungsten halogen gas. When the tungsten halogen gas diffuses to the high-temperature area near the filament, it will decompose into tungsten atoms and halogen atoms. The tungsten atoms are redeposited on the filament, while the halogen atoms continue to participate in the cycle. This halogen cycle process can effectively extend the service life of the filament, and at the same time, it can keep the filament at a higher temperature and improve the luminous efficiency.
Infrared radiation: When the filament is heated to a certain temperature, it will emit visible light and infrared rays. The halogen infrared heating lamp mainly uses the infrared rays it emits for heating. Infrared is an electromagnetic wave with a strong thermal effect.
When infrared rays are irradiated onto the heated object, its energy will be absorbed by the object, intensifying the movement of molecules inside the object, thereby generating heat and achieving the purpose of heating. Infrared rays of different wavelengths have different effects on penetrating objects and heating. The infrared wavelength range emitted by halogen infrared heating lamps is usually in the near-infrared to mid-infrared region. Infrared rays within this range can be better absorbed by most objects, thereby achieving efficient heating.
