HOT-WATER BOILER Russian patent published in 1998 - IPC

FIELD: heating and industrial boiler houses. SUBSTANCE: boiler has cooled furnace and convective heating surface. Furnace has flat side walls and wall with two rows of windows, flat lower and upper chambers, four water-jet ejectors and downtake pipes. Availability of flat walls and chambers increases heat extraction of furnace. Ejectors provide for better circulation of water in walls. Mounted behind furnace is convective part which consists of two symmetrical water-tube units whose tubes are free from bends. Compact and staggered arrangement of tubes is ensured through two-row arrangement of collecting headers in platens and shift of tubes in platens in way of flow of flue gases. EFFECT: intensification of heat exchange; reduction of expenses for manufacture and repair of boiler of preset output. 2 dwg