ELECTRODE TYPE LIQUID HEATER Russian patent published in 2002 - IPC

FIELD: processes for direct conversion of electric energy to heat, namely electrode type heaters for liquid, possibly in different type electric heating devices. SUBSTANCE: heater includes hollow body being zero electrode; phase electrode and intermediate electrode are coaxially mounted in said hollow body. Intermediate electrode is arranged between zero and phase electrodes, it is insulated relative to them and includes sections divided crosswise by means of thermoelectric insulators. Intermediate electrode (sections) operates as posistor with predetermined switching temperature equal to allowable temperature of liquid heating. EFFECT: improved design providing self-control of temperature and heating mode of liquid in all working range. 4 cl, 3 dwg