COMBINATION WATER AND AIR HEATER Russian patent published in 1995 - IPC

FIELD: power engineering. SUBSTANCE: combination water and air heater has tank, casing, heat insulation 21, medium heating appliances, cold water supply system, hot water discharge system, air supply and evacuation system and elements for additional heating of medium. Tank consists of three reservoirs: outer reservoir 1, inner reservoir 2 and intermediate reservoir 3; reservoir 3 is made in form of truncated cone on whose lesser base inner reservoir 2 is secured; lesser base is detachable. Additional heating means are made in form of flat elements secured at point of connection of intermediate reservoir 3 and inner reservoir 2 and dins 14 provided on outer surfaces of outer and inner reservoirs. When operating on gaseous, liquid and solid fuel, heating facilities are located under tank of combination water and air heater. Larger base of intermediate reservoir 3 is closed with cover 29 provided with medium between tank and casing is used for evacuating air. EFFECT: enhanced efficiency. 5 cl, 5 dwg