ELECTRICAL FLAT STEEL HEATER Russian patent published in 1999 - IPC

FIELD: manufacture of electric heaters for domestic, medical, agricultural and other devices. SUBSTANCE: proposed electrical heater can be used in electrical burners, hot plates, water heaters of various assignment, electric convection heaters, etc. It has steel backing that carries insulating and protecting glass-containing layers arranged in sequence and resistive layer placed between them. Thick-film paste based on compound of nickel boride is used in the capacity of resistive layer. Powder or thick-film paste based on crystallizing glass- glass ceramic is employed as material of insulating and protecting layers. EFFECT: exclusion of local overheating, more " soft " heating operational mode owing to which appliances and heating systems based on such electrical heaters conform to present- day requirements.