A ceramic heating sheet with temperature control

Abstract

The invention discloses a temperature-control ceramic heating piece which is of a plate-shaped structure composed of an upper ceramic piece 1, a middle ceramic piece 2, a lower ceramic piece 3, heating resistors, temperature control resistors, heating leads 6 and temperature control leads 7. The ceramic piece 1, the middle ceramic piece 2 and the lower ceramic piece 3 are sequentially stacked, the heating resistors are multiple in number, each heating resistor is electrically connected with one set of heating leads 6, and the temperature control resistors with the same number are correspondingly arranged. Each temperature control resistor is electrically connected with one set of temperature control leads 7, and the heating resistors and the temperature control resistors are located on the front face and the back face of the middle ceramic piece 2 respectively and are in one-to-one correspondence. According to the temperature-control ceramic heating piece, large-area heating can be achieved, heating efficiency is high, the heating resistors are arranged, and segmented heating and independent temperature control can be selectively achieved.

Description

technical field [0001] The invention relates to a ceramic heating sheet, in particular to a ceramic heating sheet with temperature control, belonging to the technical field of electric heating. Background technique [0002] Ceramic heating element is a new generation of high-efficiency, green and environmentally friendly heating device, which is widely used in various heater products such as industrial and agricultural technology, communication, medical treatment, and daily life. It is used to provide heat sources for heating components or directly as heating components. . At present, the ceramic heating sheet with temperature control on the domestic and foreign markets is a plate-shaped structure composed of a ceramic sheet, a heating resistor, a temperature control resistor, a heating lead, and a temperature control lead. The ceramic sheet is composed of upper, middle and lower pieces. Resistors and temperature control resistors are respectively located on the front and b...

AI Technical Summary

Problems solved by technology

At present, the ceramic heating sheet with temperature control on the domestic and foreign markets is a plate-shaped structure composed of a ceramic sheet, a heating resistor, a temperature control resistor, a heating lead, and a temperature control lead. The ceramic sheet is composed of upper, middle and lower pieces. Resistors and temperature control resistors are respectively located on the front and back sides of the middle ceramic sheet. The heating leads are electrically connected to the heating resistors, and the temperature control leads are electrically connected to the temperature control resistors. Due to the limitation of heating power, the heating area of ​​each heating sheet is small, and the heating area Relatively concentrated, it is suitable for heating components with small heating area. When the heating components need a larger heating area, a combination of multiple such ceramic heating sheets is required to achieve large-area heating. When multiple ceramic heating sheets are combined, adjacent ceramic heating sheets The heating area is a heating blind area, and the heating efficiency is low

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