表面不带电 PTC发热器是一类大功率的需吹风且散热体不带电的 PTC发热器。PTC元件安装在铝管内且与铝管绝缘，铝管外装有翅片或槽状散热片。具有安全可靠、功率稳定、噪音小、寿命长、机械强度好等优点。由于安全性能好，主要应用于冷暖空调机、暖风机、消毒柜、干燥器等大功率家用发热器件上.
Non-Surfce-Electrified PTC heater Series is a kind of large power Non-Surface-Electified PTC heater with wind blowing, PTC element is fixed in alu-minium tube and keeps insulated with the aluminium tube, Alar or tooth-grooveheat diffusing slice is fixed on the aluminium tube, The large-power heater has a series of virtues such as safety,reliability, stable power,small small sound,longlife, excellent machinery, intension and so on,Because of good safe performance,now Non-Surface-Elect- ified PTC heater is mainly used in large-pawer house heater such as cold/warm air-condition,heater,disinfecting cabinet,dryer and so on.
2.带电波纹PTC发热体系列 Surface-electrified PTC Ripple Heater Series
带电波纹PTC发热体是一类大功率吹风PTC发热体，在普通PTC元件的两侧粘上波纹状的散热体，波纹孔可供热风通过.具有发热量大、功率稳定、使用方便寿命长、可靠性高、无明火等一系列优点。已广泛应用于暖风机、冷暖空调机、消毒柜、干衣机、干燥箱等家用发热设备上
Surface-electrified PTC Ripple Heater Series is a kind of heater that can auto- control temperature and save electronic lt is made up of PTC and waves aluminum, The heater with a lot of virtues such as giving out large heat, stable power, using expediently, long life, high reliability, without bright flame is adhibited ripple heat difu- sing component which hot wind can go through on both sides of general PTC elem- ent,lt is now widely used in house heating instrument such as applied in air-adjuster, wet wipe off,dryer,suti-dryer,moveable heater and automobile etc,that need warm air.
加热器使用注意事项
1.PTC加热器的功率受外部环境影响很大，理想的测试方法是在标准工况下安装在整机中进行。通常为便于双方检验确认，实际操作时，是以在整机中确认的封样件来调整模拟风道的相关参数后测试的。测试时环境温度一般保持在20～25℃左右。
2.PTC加热器在工作时有热膨胀现象，故在结构设计时应考虑加热器周围留有一定间隙（5mm以上）；
3.若选用表面带电型加热器，在设计时还应考虑防触电措施及蒸发器结霜时的安全间距，确保没有人体、金属物和霜层触及的可能。选用表面绝缘型加热器则较为安全；
4.加热器装接三相供电时，应采用Y型连接，且中性点必须接零线，避免因三相不平衡造成某路加热器端电压过高的故障隐患
PTC加热器特性
PTC加热器采用PTCR热敏陶瓷元件，由若干单片组合后与波纹散热铝条经高温胶粘结组成，具有热阻小、换热效率高的显著优点。它的最大特点在于其安全性，即遇风机故障堵转时，PTC加热器因得不到充分散热，功率会自动急剧下降，此时加热器的表面温度维持限定在居里温度左右（一般为220℃），从而不致产生电热管类加热器表面的“发红”现象，排除了发生事故的隐患。
本公司MZFR系列加热器目前已广泛应用于家用空调器的热泵辅助加热、商用中央空调及加热类小家电产品。
PTC Heaters
The PTC heater is composed of several PTCR ceramic components adhered to wave Al tube by high temperature. It features in low thermal resistance and high coefficient of heat transmission.Besides, when the fan blocked,power of PTC heater would drop down sharply due to insufficient dissipation.Meanwhile surface temperature of heater would remain at the level of curie temperature,which is usually 220℃so that potential accident would be eliminated.
At present, our MZFR series have been extensively applied in home aircondition,commercial aircondition as well as household heating appliances.
The relations among power of PTC heaters,wind rate and ambient temperature
Example: MZFR-J1230 220V 1200W