PTC heating has the advantages of constant temperature heating, no open flame, high heat conversion rate, safe and energy-saving, minimal influence of the power supply voltage, long natural life and other traditional heating elements that cannot be compared. The application of electric heating appliances is increasingly met by R&D engineers Favorite. The principle is that after the PTV thermistor is powered on, it heats up to make the resistance enter the jump zone, and the constant temperature heating PTC thermistor's surface temperature will maintain a constant value. This temperature is only related to the internal temperature of the PTC thermistor and the applied voltage. , And has nothing to do with the ambient temperature.
The constant temperature heating PTC thermistor can be manufactured into a variety of shapes and structures and different specifications. The common ones are disc, rectangle, strip, ring and honeycomb porous. The combination of the above-mentioned PTC heating element and the metal member Jinxin can form various types of high-power PTC heaters.
The PTC heater has the advantages of low thermal resistance and high heat exchange efficiency. It is an electric heater with automatic constant temperature and power saving. Its outstanding feature is its safety performance. It will not produce electric heating tubes under any application conditions. The appearance of similar heaters is "red", which may cause burns, fires and other safety hazards.
Pay attention to the use of PTC heater
The PTC heating film has the characteristics of automatic constant temperature, no temperature control system is required, and the PTC heating film can be directly energized.
When the PTC heating film is used to heat the cold air without air supply, the PTC heating film will not be damaged.
If the PTC heating film is used to heat the cold air, the PTC heating film will not be damaged when the air is not supplied.
The service life is long, and the service life can reach more than 10 years when used in a normal environment.
Reliable work, using the internal characteristics of the PTC heating plate to control the temperature, never over-temperature.
The working voltage is very wide: when the working voltage changes twice, the change of the surface temperature is very small.
If multiple PTC heaters are used together, they should be connected in parallel, not in series.
Different heat dissipation conditions make the heating power of PTC heaters vary greatly
The heating power increases from large to small after power-on, and finally stabilizes. The stable power is related to the operating conditions. For the same PTC heater with different operating conditions, the power may differ several times. The faster the heat dissipation, the higher the stable power; the higher the PTC's surface temperature, the higher the power.
The surface temperature of the PTC heater is controlled by the PTC itself, and can also be controlled by a disconnected circuit, but it cannot be controlled by regulating the voltage.
PTC itself is very reliable and has a long lifespan, but if it is improperly assembled, the product will show unstable power and temperature.
When multiple PTCs are used together, use parallel connection instead of series connection.