IMPROVED CONDENSATION BOILER WITH PREMIXING FOR MUNICIPAL-DOMESTIC WATER SUPPLY SYSTEMS AND HEATING SYSTEMS Russian patent published in 2002 - IPC

FIELD: municipal-domestic water supply systems and heating systems. SUBSTANCE: the boiler has at least one heat exchanger with a ribbed heat exchange surface, ribs for directing the flowingdown condensate from the tube sheet. The tube plate with ribs forms the heat exchange stages. The boiler has also a ceramic burner provided with a premixing unit, including at least one flange and at least one calibrated nozzle before the perforated plates located before the ceramic plates, where burning takes place, and designed for provision of a uniform distribution of gas-air mixture over the entire surface of the burner, and a supporting member including a gasket allowing the ceramic plates expand. EFFECT: enhanced efficiency of heat exchange at a long service life. 11 cl, 5 dwg