Conhecimento básico sobre elementos de aquecimento de cerâmica PTC

Ceramic heating element is a high-energy heater with uniform heat distribution. It is a metal alloy with excellent thermal conductivity, which ensures uniform temperature of hot surface and eliminates hot and cold spots of equipment. There are two types of ceramic heating elements, namely PTC ceramic heater and MCH ceramic heater. The materials used in these two products are Completamente diferente, mas os produtos acabados são semelhantes à cerâmica, por isso são coletivamente chamados de "elementos de aquecimento de cerâmica" .

The PTC ceramic heating element is composed of PTC ceramic heating element and aluminum tube, which is composed of galvanized outer pressure plate, stainless steel corrugated spring sheet, galvanized inner pressure plate, single-layer aluminum radiator, PTC heating plate, double-layer aluminum radiator, nickel-plated copper electrode terminal, PPS high-temperature plastic electrode sheath. Due to the use of U-shaped corrugated fins, the product improves the heat dissipation rate, combines the advantages of bonding and mechanics, and fully considers various thermal and electrical phenomena when the PTC heating element is working. The PTC ceramic heating element has strong bonding force, excellent thermal conductivity and heat dissipation performance, high efficiency, safety and reliability. This PTC heater has the advantages of low thermal resistance and high heat exchange efficiency. It is an automatic constant temperature and power-saving electric heater. One of its outstanding features is its safety performance, that is, when the fan fails and stops running, the power of the PTC heater will automatically drop sharply due to insufficient heat Dissipação . Nesse momento, a temperatura da superfície do aquecedor será mantida em torno da temperatura Curie (geralmente cerca de 250 graus), evitando assim o fenômeno "avermelhado" na superfície do tubo de aquecimento elétrico .

Vantagens do elemento de aquecimento de cerâmica de PTC: 1. O elemento de aquecimento cerâmico do termistor PTC possui funções especiais de temperatura constante, ajuste de temperatura e autocontrole .}} quando a tensão de CC é aplicada no elemento ptc, sua resistência é muito baixa, e a tensão de temperatura Raplly Raplly A resistividade aumenta repentinamente, fazendo com que sua corrente caia para um valor estável, atingindo o objetivo do controle automático de temperatura e temperatura constante . nenhum componente de circuito de controle de temperatura adicional é necessário, e o elemento PTC não pode ser ajustado por meio de fórmulas de acordo com diferentes requisitos de temperatura . 2.}} {não-tumpustion, segura e fórmulas de acordo com os requisitos de temperatura. 2.}} flames (resistance wire turns red, there is open flames), and are not easy to burn. When the temperature around the PTC element exceeds the limit, its power will automatically drop to a balanced value, and will not cause a burn hazard. 3. Long life. The PTC element itself is an oxide ceramic with a long service life. It does not have As desvantagens da oxidação de alta temperatura do fio de níquel-cromo, nem possui fenômenos frágeis, como tubos de quartzo de vidro .

PTC ceramic heating elements can be used normally under low and high voltages. Low-voltage PTC elements are suitable for various low-voltage heaters, instrument low-temperature compensation, and various automotive heaters. PTC elements are suitable for heating the following electrical equipment: shoe dryers, hot melt glue guns, rice cookers, electric boots, electric Repelentes de mosquito, pentes a vapor, geradores de vapor, umidificadores, ferros de enrolamento, máquinas de venda automática, máquinas de cortina de ar, aquecedores de mão, máquinas de chá seco, salões de beleza, termostatos de garrafas de bebê, aquecedores, etc .