Liquid heaters and vaporizers – Flue – Horizontal
Patent
1978-05-15
1979-10-02
Sprague, Kenneth W.
Liquid heaters and vaporizers
Flue
Horizontal
122367C, F22B 700
Patent
active
041694317
ABSTRACT:
The fire box unit inserted into a water casing of a boiler includes a tubular cast iron body fluid-tightly mounted in the apertures of the end walls of the steel sheet casing. The cast iron body is shaped to converge frusto-conically from its inlet to its outlet end and has a plurality of radially inwardly extending webs. A combustion chamber shell is mounted in the inlet end of the cast iron body and has a fuel burner inlet for burning a fuel in the chamber defined by the shell. A closure wall opposite the fuel burner inlet deflects the combustion gases of the burnt fuel towards the fuel burner inlet where the deflected gases are received in a gas guide chamber. The shell with the gas guide chamber and a gas collecting chamber adjacent the closure wall at the outlet end of the cast iron body is supported on the webs and defines therewith gas flues leading from the gas guide to the gas collecting chamber. The gases in the flues heat the water in the casing and condensate tends to form in the bottom region of the tubular cast iron body protruding beyond the end walls of the casing. A shoulder damming the flow of the condensate in the gas flues in the end regions.
REFERENCES:
patent: 2123444 (1938-07-01), Thibaudeau
patent: 2736298 (1956-02-01), Smith
patent: 3007457 (1961-11-01), Ospelt
patent: 3601097 (1971-08-01), Viessmann
patent: 4102309 (1978-07-01), Viessmann
Kelman Kurt
Sprague Kenneth W.
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