boiler a solid fuel of the type a hearth tube radiating method of converting a boiler and means for implementing it.

摘要

The invention relates to a boiler a solid fuel of the type comprising a primary hearth 27 in which strike the combustion reactions, a secondary hearth extended by a tube in which is radiating complete the reactions of combustion, a heating surface 2 willing around the tube and radiating means to pass the combustion gases leaving the tube radiating in the annular space between the tube radiating and the heating surface, characterized in that the tube radiating combustion is composed of two coaxial chambers 8, 10, the first chamber 8 is terminated by a converging portion 9 which directs the combustion gases towards the second chamber 10 and the second chamber 10 being closed at its end and having at its input a diameter superior to that of the end of the converging portion of a delimiter with this end an annular opening 13 through which are evacuated the combustion gases injected in the second chamber 10 and in that are provided means for circulating the gas thus evacuated in the annular space 20 between said heating surface 2 and the second chamber 10.