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

FIELD: heating.

SUBSTANCE: lower longitudinal headers of a boiler are connected to transverse rectilinear headers placed on front and rear fronts of the boiler. Heat exchange surfaces placed in convective gas pipes comprise rectilinear transversely streamlined corridor tube bundles, comprising vertical stands, each of which communicates with appropriate upper and lower longitudinal headers of the boiler. Each vertical riser is separated by horizontal partitions into vertical sections, each communicating with horizontal tube bundles, ends of which are communicated with a freely sliding riser, ends of which communicate with the second pair of longitudinal headers of the boiler. At the same time its upper and lower couplings with specified headers are covered by end partitions, and on the sliding riser there is at least one cut, plugged by the second end partitions placed with a gap to each other.

EFFECT: increased efficiency of a boiler when burning brown coal, reduced heat losses with effluent gases.

6 cl, 5 dwg