PTC heater principle

- Oct 12, 2020-

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. It is an electric heater with automatic constant temperature and power saving. The outstanding feature lies in performance. Even when the fan fails and stops, the power of the PTC heater will automatically drop due to insufficient heat dissipation. At this time, the surface temperature of the heater is maintained at about the Curie temperature (usually around 250℃) ), so as not to cause the phenomenon of "redness" on the surface of electric heating tube heaters, so as not to cause hidden dangers such as burns and fires.

It is composed of radiating aluminum sheet, aluminum tube, conductive sheet, insulating film, ptc heating sheet, nickel-plated copper electrode terminal and high temperature plastic electrode sheath. Due to the use of press-fit heat sinks, this product improves its heat dissipation rate, and fully takes into account the various thermal and electrical phenomena of the ptc heating element during operation. It has strong bonding force, excellent heat conduction and heat dissipation performance, high efficiency and reliability. This type of 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.

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PTC heater principle

The constant temperature heating PTC thermistor has the characteristics of constant temperature heating. The principle is that the PTC thermistor self-heats after powering up to make the resistance enter the jump zone. 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 ambient temperature. PTC heater is a heating device designed by using constant temperature heating PTC thermistor constant temperature heating characteristics. In the occasion of low and medium power heating, PTC heater has the advantages of constant temperature heating, no open flame, high heat conversion rate, minimal influence of power supply voltage, long natural life and other traditional heating elements. The application in electric heating appliances is becoming more and more popular. Favored by R&D engineers.