WATER-HEATING BOILER Russian patent published in 2015 - IPC F24H1/00 

FIELD: heating.

SUBSTANCE: boiler comprises a furnace, the space of which is limited by a furnace grating, front and rear fronts, ceiling and side furnace screens, the latter of which are made in the form of pipe panels, hydraulically connected to appropriate upper and lower longitudinal headers of the boiler, and also a convective unit, comprising two convective gas pipes, equipped with heat exchange surfaces, comprising transversely streamlined pipe bundles, hydraulically connected to longitudinal headers of the boiler. At the inlet to the convective gas pipe there is a receiving hole of an intake chamber arranged, facing the gaps between vertical pipe risers of the convective unit of the boiler, the outlet hole of which by a gas pipe communicates with the receiving hole of a descending channel of the intermediate settlement chamber, the upper section of which is separated from an ascending channel with a partition, besides, the upper part of the ascending channel of the intermediate settlement chamber communicates by the second gas pipe with a mixing hole of an ejector, and the lower part of the intermediate settlement chamber is opened into the settlement chamber of the boiler.

EFFECT: increased efficiency of a boiler when burning brown coal due to intensified burning in a layer of moist solid fuel.

2 cl, 4 dwg