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    • 7. 发明公开
    • TUBULAR THICK FILM HEATER PROTECTION DEVICE AND TUBULAR THICK FILM HEATER
    • EP3875868A1
    • 2021-09-08
    • EP18938483.7
    • 2018-11-29
    • Heating Leader Electronic Technology Co. Ltd
    • DU, Shaoling
    • F24H1/14
    • The present invention discloses a tubular thick film heater protection apparatus, including: an upper tube, where the upper tube includes an upper tube side surface and a toroid; an outer ring surface of the toroid is integrally connected to an upper portion of the upper tube side surface, a flange downwardly extends along an inner ring surface of the toroid, and a space between the flange and an inner side wall of the upper tube side surface forms an upper groove; and a base, where the base is provided with a lower groove, the base is provided with an elastic contact piece, and a terminal contact of the elastic contact piece can be connected to an electrode through contact; and the base is provided with a wiring terminal, the wiring terminal is electrically connected to the elastic contact piece, and the wiring terminal is externally connected to a power supply. The present invention further discloses a tubular thick film heater with a protection function. The tubular thick film heater provided in the present invention prevents an external environment from affecting a surface of a heating circuit of a tubular heater assembly and further affecting the heating efficiency, and further avoids possible electrical shock accidents caused by energizing the surface of the heating circuit of the tubular heater assembly during operation of the tubular heater assembly to protect operators.