HOT-WATER BOILER Russian patent published in 2014 - IPC F24H1/00 

FIELD: power industry.

SUBSTANCE: hot-water boiler includes a housing with a head and a cover plate, in the central part of which there is a burner installation hole. A water volume, a furnace chamber, a turning chamber of flue gases and smoke tubes are arranged in the housing. Smoke tubes are interconnected through inlet sections to the flue gas turning chamber and through outlet sections to a flue gas header connected to a stack. The boiler water header is formed with a flattened shell attached by means of a free edge of side surface to the bottom of the flue gas turning chamber and facing with its bottom to the boiler head. Heating elements are made in the form of tubes, each of which is placed into a smoke tube with an annular gap. Inlet ends of heating elements are connected to a supply pipeline through the water header and outlet ends are connected to water volume. The flue gas header is formed with the boiler cover plate and water volume surfaces facing to the cover plate. The flue gas turning chamber is equipped with a side wall installed with a gap relative to the boiler housing wall. Water volume enclosed between the shell bottom and the boiler head is connected to a discharge pipeline.

EFFECT: improving boiler reliability and increasing heat removal.

3 cl, 1 dwg