Combustion heater

Stoves and furnaces – Hot-air furnaces – Preliminary air heater

Patent

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Details

126114, 122183, F24H 312

Patent

active

045879494

ABSTRACT:
A heater for air and liquid utilizing a combustible fuel which includes a first vertical stack including a combustion tube or heat stack with a bottom burner. The heat stack is surrounded by a heat transfer unit with alternate down passages and up passages. The down passages carry the heated exhaust gas. The up passages carry the fluid to be heated. A second vertical stack carries outgoing combustion gases, incoming secondary air supply for combustion, and incoming air to be heated or fluid to be heated. A heat transfer arrangement in the second stack transfers heat from outgoing combustion gases to incoming space air and combustion support air when the unit is used as a space heater.

REFERENCES:
patent: 436075 (1890-09-01), Evans
patent: 1382495 (1921-06-01), Fowles
patent: 2225181 (1940-12-01), Powers
patent: 2348569 (1944-05-01), Peters
patent: 2616412 (1952-11-01), Backus
patent: 2752912 (1956-07-01), MacCracken
patent: 2972985 (1961-02-01), Allen
patent: 3018773 (1962-01-01), Donnison
patent: 3156972 (1964-11-01), Cimochowski
patent: 3490420 (1970-01-01), Kramer
patent: 3641953 (1972-02-01), Herzberg
patent: 4338888 (1982-07-01), Gerstmann et al.
patent: 4366778 (1983-01-01), Charrier et al.

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