CONTACT WATER HEATER Russian patent published in 2019 - IPC F24H1/10 F24H1/50 

FIELD: heating systems.

SUBSTANCE: invention relates to autonomous heating systems. Contact water heater includes a housing in which a combustion chamber (CC) is placed, a water heating device (WD) and a combustion product collector (CPC). WD is made in the form of a container with water having a free surface. At the exit of the CC is installed distribution manifold with flame tubes. Flame tubes are placed in the volume of water and provided with openings for the exit of combustion products. CPC is equipped with a heat exchanger-heat exchanger (RT), made in the form of a housing enclosing the CPC divided by a perforated shell with the formation of internal and external concentric chambers, and the receiver of combustion products, made in the form of a glass with perforated walls, placed in the CPC bottom up. Glass together with the wall of the collector and the partition forms a chamber of condensation of water vapor. CPC walls, the cup and the shell are perforated, and the degree of perforation of the collector wall is less than the degree of perforation of the wall of the glass, that is less than the degree of perforation of the wall of the shell.

EFFECT: invention is directed to the intensification of heat exchange between the combustion products and the air sent to the combustion chamber.

1 cl, 2 dwg