ELECTRODE BOILER Russian patent published in 1999 - IPC

FIELD: water heating systems. SUBSTANCE: boiler has case with cover and coaxial electrodes with phase leads in the form of ArchimedesТ spiral with comb struts; outer surfaces of case and electrodes are covered with insulating material. Boiler may be provided with pipe connections or transfer valves; second exhaust valve may accommodate check valve with throttling hole to ensure water pumping, lifting, and circulation in domestic water supply systems. EFFECT: enlarged surfaces of electrodes. 2 cl, 2 dwg