STEAM-AND-WATER CONDENSATION BOILER Russian patent published in 1997 - IPC

FIELD: power engineering; heating systems and hot-water supply systems. SUBSTANCE: boiler has hermetic shell 1 partially filled with water. Below level of water furnace chamber 3 and fire smoke tubes 4 are located, heat exchanger 8 being located above level of water. Plate 6 located below heat exchanger 8 at angle to water surface forms clearances 9 and 10 between overlying and underlying edges and wall of shell 1. At least one side of plate 6 may be made with curvilinear profile. Plate 6 may be perforated and may be partially submerged under level of water. According to other version, boiler is provided with condensate drain tube whose one end is immersed in water and other end is received by hole provided in plate. EFFECT: enhanced efficiency. 7 cl, 4 dwg