What is the working principle of PTC heater?

PTC heater is also called PTC heating element, which is composed of PTC ceramic heating element and aluminum tube.
This type of PTC heater has the advantages of small thermal resistance and high heat exchange efficiency, and is an electric heater with automatic constant temperature and power saving.

The outstanding feature of PTC heater is the safety performance, in any application, it will not produce the surface "red" phenomenon such as the electric heat pipe heater, which will cause burns, fire and other safety hazards.

The PTC heater is composed of galvanized outer pressing plate, stainless steel corrugated spring plate, galvanized inner pressing plate, single-layer aluminum heat sink, ptc heating plate, double-layer aluminum heat sink, nickel-plated copper electrode terminal and pps high-temperature plastic electrode sheath.

Due to the use of U-shaped corrugated heat sink, PTC heater improves its heat dissipation rate, and integrates the advantages of adhesive and mechanical, and fully considers the various thermal and electrical phenomena of ptc heating parts at work, its binding force is strong, thermal conductivity, heat dissipation performance is excellent, high efficiency, safe and reliable.

PTC heater has the advantages of small thermal resistance and high heat exchange efficiency. It is an electric heater with automatic constant temperature and power saving.
One of the outstanding features of PTC heater is the safety performance, that is, when the fan fails to stop, the PTC heater because of insufficient heat dissipation, its power will automatically drop sharply, at this time the surface temperature of the heater is maintained at about the Curie temperature (generally around 250 ° C), so as not to produce such as the surface of the heater heater "red" phenomenon.

Constant temperature heating PTC thermistor has the characteristics of constant temperature heating, the principle is that PTC thermistor after heating up the self-heating resistance into the jump zone, constant temperature heating PTC thermistor surface temperature will maintain a constant value, the temperature is only related to the Curie temperature and applied voltage of PTC thermistor, and basically unrelated to the ambient temperature.

PTC heater is a heater designed with constant temperature heating and PTC thermistor constant temperature heating characteristics. In the medium and small power heating occasions, PTC heater has the advantages of constant temperature heating, no open flame, high heat conversion rate, minimal influence by power supply voltage, long natural life and other traditional heating elements can not be compared, and the application in electric heating appliances is more and more favored by R & D engineers.

Constant temperature heating PTC thermistor can be made into a variety of shape structures and different specifications, common disc shape, rectangle, strip, ring and honeycomb porous and so on. The PTC heating elements and metal components can be combined to form various forms of high-power PTC heaters.