| 摘要 |
<p>The invention relates to a boiler for central heating and/or sanitary hot water production, to a burner for gas fuel, as well as to an installation for central heating and production of sanitary hot water. The boiler (1) is comprised of a heating body (2) with a double envelop defining at least a firts volume (3) wherein circulates a heat conveying fluid, and a second internal volume called combustion chamber (4), provided with a burner (5), capable of raising a temperature of said heating conveying fluid. Additionnally, the combustion chamber (4) is topped with a tubular exchanger (6) which is also traversed by said heat conveying fluid. According to the invention, the boiler is comprised of means which increase the heat exchange in the combustion chamber (4), and which are capable of creating an important natural draught and a very high smoke column having a high temperature, and further, means for increasing the heat exchange within said exchanger (6), which are capable of creating charge losses which are preset as a function of the exchange game at the combustion chamber and as a function of the draught necessary for a good combustion. The burner (5) is comprised of a cylindrical envelope (21) delimiting an internal chamber (22) wherein the combustive-fuel gas mixture is introduced through a ventury device (23), and presenting a plurality of side orifices (24) which have an important height with respect to the envelope's diameter, for equal power, improving the distribution of emitted heat.</p> |
