Stoves and furnaces – Hot-air furnaces – Compressed air
Patent
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.
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Odar H. A.
Scott Samuel
Webasto-Werk W. Baier GmbH & Co.
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