| 摘要 |
A boiler for the combustion of liquid or gaseous fuels comprises a water-carrying housing in which is provided a cylindrical chamber for receiving the combustion chamber and the fuel gas flues, with a reversion chamber coupled ahead thereof, and with the chamber being surrounded by a plurality of circumferentially distributed flue channels disposed in spaced and side-by-side relationship and in cross section formed by approximately U-shaped sheet metal profiles, which channels are in communication with a flue gas collecting chamber provided with a flue gas discharge and are connected by longitudinal welding seams to the inner wall of the cylindrical chamber.
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