BOILER Russian patent published in 2002 - IPC

FIELD: heating water; heating systems. SUBSTANCE: proposed boiler has furnace chamber and convective gas duct brought in communication with said chamber, tubular radiating shields provided with collectors connected over perimeter of furnace chamber and located on walls and roof of furnace chamber, screens with collectors located in upper portion of furnace chamber, hatch with cover made in form of radiating tubular shield connected by means of flexible member with shields found on walls of furnace chamber, fuel supply unit and air distributing grate with fluidized bed consisting of finely-grained particles of inert material located on it. Furnace chamber and convective gas duct are brought in contact over entire height in way of longitudinal axis; gas duct is made in form of downtake and uptake gas ducts brought in communication in lower portion and located coaxially; they have cylindrical walls with tubes positioned vertically. EFFECT: reduced overall dimensions; high compactness. 2 dwg