Gas-fired bayonet-type heater
AssigneeAlzeta Corporation
InventorsRobert M. Kendall, Jeffrey M. Kennedy, Andrew C. Minden, Richard K. Tidball
Life of this patent
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Abstract
An efficient gas-fired bayonet-type heater has been developed to challenge the dominant position long enjoyed by the electric bayonet-type heater. The new heater replaces the electric resistance element in the bayonet-type heat exchange shell with a tubular porous fiber burner having a high length-to-diameter ratio attached to a long feed tube for the gas-air mixture. An annular space around the burner and feed tube within the shell provides the path for the combustion gases to flow to a discharge opening near the entry point of the gas-air mixture.
Claims12
A gas-fired bayonet-type heater comprising a tubular heat exchange shell with a closed end, a tubular porous fiber burner aligned with, and attached to, a fuel gas-air mixture feed tube disposed within, and annularly spaced from, said shell, said burner having a length-to-diameter ratio of at least 8 and the length of said feed tube within said shell being at least 50% of the length of the said burner, a removable seal plate with said feed tube extending therethrough fastened across the open end of said shell, and an opening in said shell adjacent said open end for the discharge of combustion products.
Dependencies are inferred from the claim text.