HOT-WATER BOILER Russian patent published in 2002 - IPC

FIELD: heat power engineering, applicable in boiler units, mainly in self-contained and roof- mounted boiler rooms. SUBSTANCE: the hot-water boiler has a casing with a cover, burner fastened in the central part of the cover, the casing accommodates a water reservoir, furnace, flue gas rotary chamber and fire tubes communicating through the inlet sections with the flue gas rotary chamber, and through the outlet ones-with the flue gas header connected to the chimney, water header positioned in the bottom part of the boiler, heating elements in the form of tubes, each positioned in the fire tube form of tubes, each positioned in the fire tube with an annular gap, the inlet ends of the heating elements are connected to the water supply pipe-line, and the outlet ends - to the boiler water reservoir. According to the invention, gas flow turbulators are installed in the ducts formed by the annular gaps between the heating elements and the fire tubes, the gas flue rotary chamber is formed by the bottoms of the water reservoir and furnace, the inlet ends of the heating elements are connected to the water supply pipe-line through the water header, and the outlet ends - directly to the water reservoir, the water header is formed by the bottoms of the boiler and furnace, and the flue gas header - by the boiler cover and the water reservoir surfaces facing the cover. EFFECT: enhanced efficiency of heat pick-up, simplified construction, reduced mass and overall dimensions of the boiler. 4 cl, 3 dwg