Recursos de controle do aquecedor PTC

Characteristics of PTC heaters: Heaters made of PTC ceramic heating elements have excellent temperature control and energy-saving characteristics, extremely low thermal inertia, no open flame, no radiation safety, good vibration resistance and other advantages. The reason why PTC heaters are energy-saving is that their output power will decrease significantly with the increase of ambient temperature. When the ambient temperature rises due to heating, the PTC power has decreased under the condition of constant air volume. This feature plays a role in automatic power regulation to a certain extent. On the other hand, it can also be understood that the larger the room temperature, the greater the PTC output power, and the faster the heating. As the room temperature rises, the PTC output power gradually decreases, and the O efeito de aquecimento se torna mais lento .

High power density is also one of the significant features of PTC heaters. PTC heaters use forced convection to heat the room temperature. Because the heat transfer coefficient of forced convection air is dozens of times that of natural convection, the heat exchange area required to transfer the same amount of heat can be as small as a few tenths. A 100-120W O componente PTC pode ser transformado em um volume tão pequeno quanto 24 × 15 × 2 . 2mm 3. Esta é a chave para tornar os aquecedores de PTC compactos e a luz sob a mesma potência . seu volume e peso podem ser tão pequenos quanto cerca de um quinto da mesma potência.

A atenuação do envelhecimento é um dos parâmetros mais importantes para medir a qualidade dos aquecedores de PTC . A velocidade de envelhecimento dos componentes do PTC é a mais rápida nas primeiras 400 horas de uso e, em seguida, se torna cada vez mais estável. após 1000 horas de trabalho contínuo, a potência de bom e o bom pt com um bom PT com uma componente.} the heating function of PTC heaters. There are many factors that affect the aging and attenuation of PTC. The high Curie point is the main reason. The higher the Curie point, the faster the aging. In order to save costs and pursue high power unilaterally, some unknown manufacturers often use PTC components with TC ≥ 260 graus para fazer aquecedores . parece não haver problema no uso inicial, mas com o passar do tempo, o envelhecimento e a atenuação são óbvios .

Constant temperature heating PTC thermistor has constant temperature heating characteristics. The principle is that after the PTC thermistor is powered on, the self-heating temperature rises and the resistance value enters the jump zone. The surface temperature of the constant temperature heating PTC thermistor will remain constant. This temperature is only related to the Curie temperature and applied voltage of o termistor do PTC e não tem nada a ver com a temperatura ambiente .

Constant temperature heating PTC thermistor can be made into a variety of shapes and different specifications. Common ones are disc, rectangle, strip, ring, and honeycomb porous. Combining the above PTC heating elements and metal components can form various forms of high-power PTC heaters.