SECTIONAL HEATING BOILER FROM CAST IRON OR ALUMINIUM Russian patent published in 2014 - IPC F24H1/30 

FIELD: heating.

SUBSTANCE: invention refers to power engineering and can be used in sectional heating boilers made from cast iron or aluminium. The essence of the invention is that a boiler utilising condensation heat of waste gases consists of annular sections with annular water cavities connected to each other by means of holes made in bosses; the sections form a furnace chamber with a flue gas duct enveloping the sections for flue gas passage. As flue gas ducts for passage of very hot flue gases between every two neighbouring sections there are annular slots; flue gas ducts are divided into primary and secondary sections, in the primary one of which each flue gas duct passes starting from the furnace chamber approximately radially outwards and ends in a waste gas header on the outer side of the sections, where flue gases flow over to the secondary section, in which at least one flue gas duct passes starting from the waste gas header approximately radially inside towards a waste gas pipeline.

EFFECT: configuration will provide a boiler with compact features and improve its operating reliability.

18 cl, 3 dwg