UNIVERSAL AIR HEATING FURNACE Russian patent published in 2019 - IPC F24B7/00 F24C1/04 

FIELD: heating devices.

SUBSTANCE: invention relates to heating devices, in particular, to metal furnaces on solid, liquid or gaseous fuel intended for air heating of residential and non-residential premises. Universal air heating furnace consists of a firebox with a fuel door, a grate arranged between the firebox and the ash box, a discharge stack connected to a short smoke branch pipe attached above the firebox cover, to the upper part of which a downwardly bent smoke branch pipe is welded at a certain distance from the outer surface firebox. Smoke pipe bent downwards through the smoke branch pipe is connected to the hollow small heater also located at some distance from the firebox. Inner cavity of heater forms flue gas channel with horizontal tube located inside it, free ends with holes of which are brought in direction of heated room. Both ends of the horizontal tube are welded to side end walls of the hollow heater and covered by adjusting shutters with axis of rotation. Horizontal tube located in the internal cavity of the hollow heater is rigidly connected to radial branches of different length welded to it in the form of perpendicularly installed tubes of small size towards side inner walls of the hollow heater. Besides, the cylindrical hollow heater through the smoke branch perforated with holes is connected to the lower small cylindrical heater filled with liquid or gaseous fuel, the cover of which has an inlet hole with a horizontal adjusting shutter. Walls of tubular part of branch pipes of cylindrical heaters and location of horizontal tube with welded radial branches in the form of tubes of different length increase heat removal.

EFFECT: combustion fuel saving, higher efficiency.

1 cl, 2 dwg