Fuel-operated heating system, particularly an auxiliary heater f

Details Fuel-operated heating system, particularly an auxiliary heater f Fuel-operated heating system, particularly an auxiliary heater f

1984-11-07

1987-01-20

Scott, Samuel

Stoves and furnaces

Hot-air furnaces

Compressed air

122182S, 126116R, 165147, F24H 306

Patent

active

046373713

ABSTRACT:
An auxiliary heater for a vehicle heating system of the type having a burner projecting into a combustion chamber delimited by a combustion tube from which combustion gases emerge and are introduced into an annular space through which the combustion gases flow in an opposite direction to an exhaust outlet, the annular space being bounded peripherally by a heat exchanger containing a heat-transferring medium, such as water. In order to improve the efficiency of such an auxiliary vehicle heater and to lower the temperature of the combustion gases leaving the exhaust outlet, the cross-sectional flow-through area of the annular space is reduced in the flow direction toward the exhaust outlet. Fins are provided which project into the annular space a distance that reduces in correspondence with the reduction in the cross-sectional area of the annular space. The reduction in the cross-sectional area of the annular space may be continuous or in steps.

REFERENCES:
patent: 74269 (1968-02-01), Anderson
patent: 1734310 (1929-11-01), Taylor
patent: 2429360 (1947-10-01), Kells
patent: 3060922 (1962-10-01), Wilson
patent: 3236044 (1966-02-01), Ruge
patent: 3672336 (1972-06-01), Joannes
patent: 3779229 (1973-12-01), Volbehr
patent: 3894526 (1975-07-01), Kofink
patent: 3970072 (1976-07-01), Chipchase
patent: 3989029 (1976-11-01), Friedl et al.
patent: 3989030 (1976-11-01), Friedl
patent: 4329943 (1982-05-01), Schworer

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