PTC heater principle
Constant temperature heating PTC thermistor has constant temperature heating characteristics. The principle is that after the PTC thermistor is powered on, the self-heating temperature will make the resistance value enter the transition zone, and the surface temperature of the constant temperature heating PTC thermistor will maintain a constant value. The Curie temperature of the thermistor is related to the applied voltage, but basically independent of the ambient temperature. PTC heater is a heating device designed by using constant temperature heating PTC thermistor constant temperature heating characteristics. In small and medium power heating occasions, PTC heaters have the incomparable advantages of traditional heating elements such as constant temperature heating, no open flame, high heat conversion rate, little influence on power supply voltage, and long natural life. R & D engineers of all ages.
PTC heaters are divided according to conduction mode
(1) PTC Ceramic Heater mainly based on heat conduction. It is characterized by a multi-layer heat transfer structure such as an electrode plate (electric conduction and heat transfer) installed on the surface of the PTC heating element (electric conduction and heat transfer), an insulating layer (electric insulation and heat transfer), a heat conduction heat storage plate (some are also added with heat conduction glue), and the PTC element The emitted heat is transferred to the heated object.
(2) Various PTC ceramic air heaters that conduct convective heat transfer with the formed hot air. It is characterized by high output power and can automatically adjust the blowing air temperature and output heat.
(3) Infrared radiation heater. Its characteristics actually use the heat quickly emitted by the surface of the PTC element or the heat conduction plate to directly or indirectly excite the far-infrared paint or far-infrared material that contacts the surface to radiate infrared rays, which constitutes a PTC ceramic infrared radiation heater.