HOT-WATER BOILER Russian patent published in 1995 - IPC

FIELD: heat power engineering. SUBSTANCE: furnace chamber of hot-water boiler is embraced with water jacket to which generating tubes are connected; these tubes connect its opposite sides in upper and lower portions forming two crossing bundles. Arranged in water jacket are thermal sensors and electric heaters interconnected through thermal relay and starter. In upper portion boiler is provided with water heater having water mixing partitions and smoke stack made in form of elbow with gate valve and door. Mounted in lower portion of furnace chamber is fire grate under which detachable box is mounted in ash chamber. EFFECT: high efficiency of boiler, enhanced reliability, ease in operation and suitability for operation on solid, liquid and gaseous fuel. 4 cl, 3 dwg