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US 4,226,670 AGranted
Material injection nozzle for pulse jet drying systems
AssigneeSonic Dehydrators, Inc.
InventorsFrederick A. Ferguson, Rodney D. Payne
Life of this patent
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AssigneeSonic Dehydrators, Inc.
InventorsFrederick A. Ferguson, Rodney D. Payne
Estimating the term…
A material injection nozzle for a spray drying system of the type wherein the material to be dried is introduced into the exhaust pipe of one or more pulse jet engines and borne upwardly through openings in the floor of a vertical drying chamber is disclosed. The nozzle includes a substantially cylindrical member that is coaxially mounted within the pulse jet engine exhaust pipe to extend from the exit opening thereof to a point below the termination of a material feedpipe that passes coaxially upward through the lower portion of the pulse jet engine exhaust pipe. In all cases, the nozzle is dimensioned and arranged to interact with the high temperature gaseous flow and acoustic field within the exhaust pipe to eliminate or greatly reduce adherence of material passing through the exhaust pipe which would otherwise accumulate as a burned, hardened substance and cause the pulse jet engines to malfunction and cease operating.
A material injection nozzle for a pulse jet drying system of the type wherein the material to be dried flows through a material feedpipe which passes into and along the exhaust pipe of a pulse jet engine for introduction of the material into the hot gaseous flow stream and high level acoustic energy within said exhaust pipe and wherein said material feedpipe is terminated a predetermined distance from the exhaust opening of said exhaust pipe, said material injection nozzle comprising:
In a drying system wherein one or more pulse jet engines are mounted with the exhaust pipes thereof in fluid communication with a drying chamber and a material feedpipe is routed into and coaxially along the interior of at least one of said pulse jet engine exhaust pipes with said feedpipe being terminated a predetermined distance from the exit opening of said exhaust pipe, the improvement comprising a material injection nozzle for adapting said drying system for use with fine particulate heat sensitive material, said material injection nozzle comprising:
Dependencies are inferred from the claim text.