There are several heating principles for PTC heaters? PTC heaters are divided into conduction methods (1) PTC ceramic heaters based on heat conduction. It is characterized by heat conduction and heat storage through the electrode plate (conductivity and heat transfer) and insulating layer (electricity isolation and heat transfer) mounted on the surface of the PTC heating element Multi-layer heat transfer structures such as plates (and some with thermal conductive glue) and other multi-layer heat transfer structures, which transfer the heat emitted by the PTC element to the object to be heated. (2) Various PTC ceramic hot air for convective heat transfer by the formed hot air It is characterized by high output power, and can automatically adjust the blowing air temperature and output heat. (3) Infrared radiant heater. Its characteristics actually use the heat from the surface of the PTC element or the heat-conducting plate to directly or indirectly stimulate the contact with its surface Far-infrared paint or far-infrared material makes it radiate infrared rays, which constitutes a PTC ceramic infrared radiant heater.
PTC heaters are divided into structural features (1) common and practical PTC ceramic heaters. Such appliances mainly include: electric mosquito repellent, hand warmer, dryer, electric heating plate, electric iron, electric soldering iron, electric bonding It is characterized by low power, but high thermal efficiency and practicality. (2) Automatic constant temperature PTC heater. This kind of appliances mainly include: small crystal device constant temperature bath, constant temperature incubator, electronic thermos, Heat preservation box, heat preservation cup, heat preservation plate, heat preservation cabinet, heat preservation table, etc. It is characterized by automatic heat preservation, simple structure, good constant temperature characteristics, high thermal efficiency, and wide operating environment temperature range.
The motor ventilation pipe cannot be removed. After removal, the motor may overheat and burn out. The variable speed resistor can change the gear of the motor. If the first or second gear is used for a long time, it is easy to cause the resistor to burn out and affect the normal use. If this problem is found, it should be replaced in time. After the operating system is used for a long time, the manipulating cable is easy to be aging and deformed, making the manipulation inflexible or not in place. Do not move it rigidly to avoid damage to the parts.