The PTC type ceramic heater adopts the PTC type ceramic heater, which is composed of a PTC type ceramic heater assembly and corrugated aluminum strip through high temperature bonding. This type of 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.
One of its outstanding features lies in its safety performance. Under any application conditions, the appearance of "redness" of electric heating tube heaters will not occur, which may cause burns, fires and other safety hazards. The most notable features are: 1. Save cost and short-lived. It does not require special temperature controllers and temperature sensors such as thermal resistance thermocouples to stop the temperature response and stop the heating control of the heater. Its temperature adjustment is based on its own data characteristics, so that this product has far greater applications than other heaters. life. 2. Safe and green. The heater body is designed to have a multi-level heating temperature below 200 degrees Celsius. Under any conditions, the body does not turn red and has a maintenance isolation layer. Any application site does not require asbestos and other heat insulation materials for cooling treatment. You can rest assured that there is no right Human burns and fire problems. 3. Save energy. Compared with electric heating tubes and resistance wire heating products, this product relies on the characteristics of the material itself and adjusts its own thermal power output according to the change of the ambient temperature, so it can optimize the heater's electrical energy consumption to a minimum, and at the same time, it is a material with high heating efficiency. The application efficiency of electric energy is also greatly improved. ·Rapid temperature rise, automatic temperature control in case of fan failure, long service life ·Wide voltage application range, can be designed according to requirements between 12V-380V ·Convenient design, can be designed arbitrarily from low power to high power, and the shape can also be customized Request design, non-extinguishing, safe and reliable, no redness when PTC heats up, no open flame in medium and small power heating places, PTC heater with constant temperature heating, no open flame, high heat conversion rate, minimal influence by power supply voltage, long natural life, etc. The incomparable advantages of traditional heating components have been increasingly favored by R&D engineers for their application in electric heating appliances. Application Note (1) The PTC heater has the characteristics of automatic constant temperature, no temperature control system is required, and the PTC heater can be directly energized. (2) When the PTC heater is used to heat liquid (such as water), the PTC heater will not be damaged after the liquid is dried. (3) If the PTC heater is used to heat cold air, the PTC heater will not be damaged when the air is not supplied. (5) Long service life, under normal environment, the service life can reach more than 10 years. (6) Reliable work, using the internal characteristics of the PTC heater to control the temperature, and never over-temperature. (7) The working voltage is very wide: when the working voltage changes twice, the change of the surface temperature is very small. (9) When multiple PTC heaters are used together, they should be connected in parallel, not in series. (10) Different heat dissipation conditions make the heating power of PTC heaters vary greatly. (11) The heating power changes 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 surface temperature of the PTC, the higher the power. (12) The surface temperature of the PTC heating element is controlled by the PTC itself, and it can also be controlled by the disconnection circuit, but it cannot be controlled by regulating the voltage. (13) PTC itself has high reliability and long lifespan, but if it is improperly assembled, the product will show unstable power and temperature. (14) When multiple PTCs are used together, they should be connected in parallel, not in series.
PTC is an abbreviation for ceramic heating element. It uses a fan to incite air to flow through the PTC electric heating element for forced convection, which is the main heat exchange method. It is equipped with a limited temperature device inside, when the air outlet is blocked by the fan, it can automatically cut off the power. Some are also equipped with a dump switch, which can automatically cut off the power when the heater is dumped. Its output power is 800-1200 watts, and the temperature can be adjusted at will. The air supply is gentle during work, the temperature rises quickly, and it has automatic constant temperature function. PTC components generally have waterproof function, so it is suitable for use in the bathroom. The price is between 300 and 500 yuan. It is the ideal portable household electric heater at present.
(1) PTC ceramic heater based on heat conduction. Its characteristic is to pass through the electrode plate (conductivity and heat transfer) of the PTC heating element surface device Thermal conductive glue) and other multi-layer heat transfer structures, which transfer the heat emitted by the PTC element to the heated object. (2) Various PTC ceramic hot air heaters that stop convective heat transfer by the formed hot air. Its characteristic is the output power It is large, and can automatically adjust the blowing temperature and output heat. (3) Infrared radiant heater. Its characteristics are practical application of the PTC element or heat conduction plate surface quickly emitted heat directly or indirectly stimulates the far-infrared paint or far-infrared coating that touches its surface. Infrared data makes it radiate infrared, which constitutes a PTC ceramic infrared radiant heater.
According to the structural characteristics (1) Ordinary applicable PTC ceramic heaters. Such appliances mainly include: electric mosquito repellent, hand warmer, drier, electric heating plate, electric iron, electric soldering iron, electric heating adhesive, curling hair Hair irons, etc. Its characteristic is that the power is not large, but the thermal efficiency is very suitable. (2) Automatic constant temperature PTC heater. This kind of appliances mainly include: small crystal device constant temperature bath, constant temperature incubator, electronic thermos, incubator, Insulation cups, insulation plates, insulation cabinets, insulation tables, etc. Its characteristics are automatic heat preservation, simple structure, good constant temperature characteristics, high thermal efficiency, and wide operating environment temperature range. (3) Hot air PTC heaters. This type of hot air PTC heaters mainly include: small warm air heaters, hair dryers, and room heaters , Dryers, wardrobes, clothes dryers, industrial drying equipment, etc. Its characteristics are high output hot air power, rapid heating, safe, automatic adjustment of air temperature and power consumption.
PTC component selection The characteristics and quality of PTC components are the key elements that directly determine the performance of PTC heater products. At present, the PTC heating elements used in thermostatic heater products such as heaters are all high-temperature PTC elements. The Curie temperature is higher than 120°C. Compared with low-temperature PTC elements, there are big differences in manufacturing process and performance parameters. Good PTC characteristics are the foundation for good heating performance. The main parameters to consider when selecting PTC components: (1) Room temperature resistance R25: used for 110~220V voltage, R25 is generally 100Ω~10KΩ, when used for 6~24V, R25 is 0.5~5Ω. Under normal conditions, R25 is small, the initial current is large, the heating is fast, and the power is also large. But the withstand voltage is poor. (2) Curie temperature TC should be moderate: under certain conditions, increasing TC can increase the power consumption of the heater, but too high TC (greater than 260°C) makes the electrodes of the PTC element prone to aging, significantly shortening the service life, and often Accompanied by thermal breakdown. Therefore, PTC heating elements with a Curie temperature below 260°C are generally selected. (3) The withstand voltage should be high: at least two times the operating voltage must be guaranteed to prevent electrical breakdown. (4) The temperature coefficient of resistance should be large: generally greater than 14 to ensure that it is less affected by environmental temperature changes. (5) The initial impulse current should be moderate: the general request impulse current should be less than twice the value of the stable working current.