Ducts, air ducts, duct heaters, electrically assisted ptc heaters(Welcome to customise)
1, ceramic PTC heater introduction:
Ceramic PTC thermistor is based on barium titanate, doped with other polycrystalline ceramic materials manufactured with low resistance and semi-conductivity characteristics. This is achieved by purposefully doping a material with a higher chemical valence as the point element of the crystal: a portion of the barium or titanate ions in the crystal lattice is replaced by higher valence ions, thus obtaining a certain number of free electrons that produce electrical conductivity. For the PTC thermistor effect, that is, the reason for the step increase in resistance value, lies in the material organisation is made up of many small microcrystals, at the interface of the grains, that is, the so-called grain boundaries (grain boundaries) on the formation of barriers to prevent the electrons from crossing the boundary into the adjacent areas, and therefore produce a high resistance. This effect is counteracted at low temperatures: the high dielectric constant and the spontaneous polarisation strength at the grain boundaries prevent the formation of barriers at low temperatures and allow electrons to flow freely. At high temperatures, the dielectric constant and polarisation strength decrease dramatically, resulting in a large increase in the barrier and resistance and a strong PTC effect.
2, Juheng juheng heater:
Our company heater by the selection of high-quality PTC thermal ceramic elements for the heat source, by a number of high-quality PTC ceramic monolithic parallel combination with the aluminium alloy made of corrugated aluminium strip radiator by high-temperature bonding and the composition of the heater. This type of PTC heater has a small thermal resistance, high heat transfer effect and long-term use of low power attenuation advantages, it is a prominent feature also lies in the safety performance, that is, in the event of a fan failure stops, the PTC heater due to insufficient heat dissipation, its power will automatically drop dramatically, (close to disconnection) at this time, the surface temperature of the heater to maintain the temperature in the Curie temperature or so (generally in the 250 ℃ up and down), lower than the temperature and then Automatically energised (automatic control), so as not to produce such as electric heaters such as the surface of the heater ‘red’ phenomenon, safety without open flame, using a wide range of voltage, no oxygen consumption.In addition, the overall appearance of the PTC heater is lightweight, in the machine within the assembly is extremely convenient. The company from the industry point of view, the production of various specifications of the PTC heater, according to the requirements of the buyer for the design and production of electric heating power from a few kilowatts to hundreds of kilowatts.
3、Detailed parameters of ceramic PTC single chip:
Rated voltage 220V
Rated frequency: 50Hz
Insulation resistance: ≤ 100 MΩ (normal)
Electrical strength: 1500V/min
L size range: 100 ~ 800 mm (optional)
Rated power range: 500～3000 W (optional)
Maximum power deviation: +5% ~ -10
Maximum starting current: <1.5AIe
PTC element withstand voltage: 450V
Thermal protection action time: 3～8min
