Furnaces – Combined – With boiler
Patent
1994-09-30
1997-01-07
Bennett, Henry A.
Furnaces
Combined
With boiler
110245, 110258, 122 2, F23B 700
Patent
active
055906109
ABSTRACT:
The waste burning boiler comprises a cylindrical outer wall, a cylindrical inner wall consisting of a plurality of vertical water pipes having the gaps therebetween closed by plate members. The plate members are provided with a plurality of holes communicating the annular chamber between the inner and outer walls with the combustion chamber defined inside the inner wall. Compressed air is introduced into the annular chamber, and is blown into the combustion chamber from these small holes. The air blown from these holes provide a sufficient amount of oxygen for combustion, and raises the combustion temperature. Additionally, the air flow from the small holes provide a favorable stirring effect which improves the transfer of heat produced by combustion to the water pipes. Also, because the air blown into the combustion chamber is heated by the heat produced by the combustion in the combustion chamber, the air blown into the combustion chamber would not significantly lower the prevailing temperature in the combustion chamber. The annular chamber additionally serves as an insulator for keeping the outer wall at a relatively low temperature which is desirable not only for simplifying the outer wall design but also for improving the overall thermal efficiency of the boiler.
REFERENCES:
patent: 1720365 (1929-07-01), Klingbeil
patent: 4909162 (1990-03-01), Vollhardt
patent: 5103745 (1992-04-01), Harloff
patent: 5259342 (1993-11-01), Brady et al.
patent: 5408942 (1995-04-01), Young
Bennett Henry A.
Tinker Susanne C.
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