ES2019601B3 - HEATING BOILER. - Google Patents

Abstract

An oil-fired or gas-fired boiler (1) with a combustion chamber (3) which on its end side lying opposite the burner (2) opens freely into a deflection chamber (4), with a single-flue or multi-flue smoke gas duct (15) which is conducted, starting from the deflection chamber (4), on the outside of the combustion chamber (3) into a smoke gas collecting chamber (19) designed in the burner-side boiler end region, and with a water chamber (8) which surrounds the combustion chamber and is heated by the smoke gases in the smoke gas duct, is, in order to achieve good combustion with low discharge of harmful substances, such as nitric oxides, carbon monoxides, hydrocarbons and soot, designed in such a manner that the combustion chamber has a first, cooled zone (11) adjoining the burner and a second, hot zone (9) which follows seen in the flame spread direction, that the water chamber has a first region, seen in the flame spread direction, the inner wall (12) of which directly delimits the flame formation zone, and a second region, the inner wall (10) of which surrounds with a separation a wall of a combustion chamber insert, which wall delimits the flame spread zone, and a multi-part transition region (14) which connects the first water chamber region (11) to the second water chamber region (9), and that the smoke gas duct has in the direction of flow of the smoke gases a first section (16) which extends inside the separation between the inner wall (10) of the second water chamber region (9) and of the combustion chamber insert (7) of the flame burning-out zone, and a second section (17) which runs, with a separation from the inner wall (12) of the first water chamber region (11), through the latter or along its outer wall, and a multi-part smoke gas intermediate space (18) which connects the first smoke gas section (16) to the second smoke gas section (17).