| 摘要 |
A reversible, submersible, encapsulated PTC heater is disclosed having: a disc-shaped sealable housing; a central disc comprised of a sheet mineral disposed within the sealable housing; cavities disposed within the central disc; PTC heating elements disposed within the cavities; an upper electrode disc disposed upon a top side of the central disc and PTC heater elements; a lower electrode disc disposed upon a bottom side of the central disc and PTC heater elements; an upper polyimide film disc disposed upon a top side of the upper electrode disc; and a lower polyimide film disc disposed upon a bottom side of the lower electrode disc. The electrode discs are configured to make an intimate contact with the PTC heating elements and for connectivity to an electrical power source. The PTC heater is configured to electrically heat a medium to a predetermined temperature and to maintain the temperature of the medium.
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