Principle and classification of automobile PTC heater
Automobile PTC heater PTC electric heating has the advantages of constant temperature heating, no open flame, high heat conversion rate, safety and energy saving, minimal influence of the power supply voltage, long natural life and other traditional heating elements that cannot be compared. The use of electric heating appliances is increasing. The more it is favored by R&D engineers. The principle is that after the PTC thermistor is powered on, it heats 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 related to the Curie temperature of the PTC thermistor and the applied voltage. , And basically has nothing to do with the ambient temperature.
Classified by conduction method
(1) Automotive PTC heater based on heat conduction. It is characterized by a multi-layer heat transfer layout such as an electrode plate (electrical conductivity and heat transfer), an insulating layer (electrical insulation and heat transfer), a thermally conductive heat storage plate (some with thermally conductive glue) and other layers of the PTC heating element The heat emitted is transferred to the heated object.
(2) Various automobile PTC heaters that conduct convective heat transfer by the resulting hot air. It is characterized by high output power, and can automatically adjust the blowing wind and output heat smoothly.
(3) Infrared radiation car PTC heater. Its characteristics actually use the rapid heat from the surface of the PTC element or the heat-conducting plate to directly or indirectly cause the far-infrared paint or far-infrared material that touches its surface to radiate infrared rays, forming a PTC ceramic infrared radiation electric heater.
Classified by use characteristics
(1) General applicable automobile PTC heater. Such appliances mainly include: electric mosquito repellent, hand warmer, dryer, electric heating plate, electric iron, electric soldering iron, electric bonding device, curling iron, etc. Its characteristic is that the power is not large, but the thermal efficiency is high and it is very suitable.
(2) Automatic thermostat type automobile PTC heater. Such appliances mainly include: small crystal device constant temperature bath, constant temperature cultivation box, electronic thermos bottle, incubator, thermos cup, insulation plate, insulation cabinet, insulation table, etc. It is characterized by automatic heat preservation, simple layout, good constant temperature characteristics, high thermal efficiency, and wide use environment temperature limits.
(3) Hot-air type automobile PTC heater. This kind of hot-air automobile PTC heaters mainly include: small warm-air heaters, hair dryers, heaters, dryers, wardrobes, clothes dryers, industrial drying equipment, etc. Its characteristics are high output hot air power, rapid heating, safety, and can automatically adjust the wind and soft power consumption.
