PTC heater working principle: PTC heater manufacturers use PTCR thermal ceramic elements, which are composed of multiple monolithic composite materials and corrugated heat-dissipating aluminum tapes bonded with high-temperature adhesives.
It has significant benefits of low heat resistance and low heat interchange compliance. Its very big feature lies in its safety. When the electric fan is blocked, the PTC heater will not be completely dissipated and the power supply will drop sharply.
The surface temperature of the heater will remain limited to the Curie temperature to avoid causing "redness" on the surface of the electric heating tube heater and eliminate hidden dangers of disorder.
The role of PTC in air conditioner: The PTC corrugated heater of air conditioner is a kind of self-controlling temperature heater.
The constant temperature heating PTC thermistor has the characteristic of constant temperature fever. The principle is that after the PTC thermistor is powered on, the resistance value will enter the jump zone by self-heating. The surface temperature of the constant temperature heating PTC thermistor will maintain a constant value. This temperature is only the same as the PTC The Curie temperature of the thermistor is related to the applied voltage, but basically has nothing to do with the temperature of the situation.
The PTC heating element is the heating element that uses the constant temperature heating PTC thermistor constant temperature fever feature plan. In small and medium-power heating places, PTC heating elements have the advantages of constant temperature fever, no open flame, high heat conversion rate, minimal influence on the power supply voltage, long natural life and other ancient fever elements that cannot be compared. The use of electric heating appliances has become increasingly popular. The love of R&D engineers.
The constant temperature heating PTC thermistor can be made into a variety of appearance layouts and different specifications. The most common ones are disc, rectangle, strip, ring and honeycomb porous. Combining the above-mentioned PTC fever elements and metal components can form various forms of high-power PTC heating elements.
PTC heater use place and matters needing attention:
In the case of a material with a larger thermal conductivity that conducts heat, the distance S between the heated solid and the PTC heater should be within 30 mm; in the case of a material with a slightly larger thermal conductivity that conducts heat, the heated solid and the PTC The distance between the heaters should be within 10 mm; in the case of materials with poor thermal conductivity that conduct heat, the distance between the heated solid and the PTC heater should be within 3 mm; it is not possible to use insulating materials to conduct heat. If the material with better thermal conductivity is used and the distance between the heated solid and the PTC heater is small, the heated solid will obtain a relatively stable temperature.
The ratio of the area of the heat dissipation layout to the heat transfer area of the PTC ceramic body is very good not to exceed 3 times. If the area of the heat dissipation layout is too large, the temperature obtained by the heated solid will be unstable.
