FLUE FOR FURNACE Russian patent published in 2016 - IPC F24B7/00 F23J11/00 E04H12/28 

FIELD: device for fuel combustion.

SUBSTANCE: invention can be used during development of furnaces for combustion of any type of fuel. Flue for furnace consists of vertically oriented housing, bottom inlet part of which is connected to a source of hot gases, and upper outlet - to atmosphere. In central part of casing pipe, its lower and upper parts are connected to each other by means of three isolated from each other shaped channels, one central and peripheral, having shape of circle segments arranged with radial clearance in relation to each other. Central channel in cross section has shape of a biconvex lens, and peripheral channels have shape of convex-concave lens. Convex part of central channel and concave parts of peripheral channels form channels for air passage.

EFFECT: higher heat emission of furnace by lowering temperature of exhaust flue gases.

1 cl, 3 dwg