The new type relates to a new type of PTC heater for cabinet heating, including: a shell, the shell wall is provided with a shell air inlet and a shell air outlet; the PTC heater is arranged in the shell and located on the side of the shell air outlet; a centrifugal fan, It is arranged in the shell and is located on the side of the air inlet of the shell. The centrifugal fan of the utility model has uniform air volume, small difference in air volume around the center and no dead corners. The temperature of the PTC heating component will drop relatively evenly after being blown and dissipated, so that its resistance value will be greatly reduced, heating The power of the device will be greatly improved, and the temperature and air volume of the air outlet of the housing will be more uniform. On the other hand, using the combination of PTC heater and centrifugal fan, because the centrifugal fan has a flat shape, the thickness of the heater can be reduced to suit the installation in the cabinet. Compared with the axial flow heater, it has a square structure. , It is difficult to make a thinner heater.
PTC type ceramic heater use attention
1. The PTC heating plate has the characteristics of automatic constant temperature, no temperature control system is needed, and the PTC heating plate can be directly energized.
2. When the PTC heating film is used to heat liquid (such as water), the PTC heating film will not be damaged after the liquid is dried.
3. 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.
4. Long service life, under normal environment, the service life can reach more than 10 years.
5. Reliable work, use the internal characteristics of the PTC heater to control the temperature, and never over-temperature.
6. The working voltage is very wide: when the working voltage changes twice, the change in surface temperature is very small.
7. When multiple PTC heaters are used together, they should be connected in parallel, not in series.