Diffuser with convoluted vortex generator
Patent 4971768 Issued on November 20, 1990. Estimated Expiration Date: 
December 15, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 15, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3174282 3578264 Catalytic converter Gas turbine exhaust nozzle for controlled temperature flow across adjoining airfoils Particle filtration and removal system Exhaust processor assembly Patent #: 4783959 InventorsApplicationNo. 132395 filed on 12/15/1987US Classes:422/176, Including waste gas flow distributor upstream of reaction site and within reaction chamber modifying velocity profile of gas55/319, Including expansion chamber55/440, Parallel and continuous nonplanar members (e.g., crimped, corrugated, curved)55/464, Corrugated, ribbed, crimped, or with projections55/473, Impeller upstream of separating media55/529, MISCELLANEOUS (E.G., SHAPES)165/160, Longitudinal165/174, With internal flow director422/177, Including solid, extended surface, fluid contact reaction means; e.g., inert Raschig rings, particulate absorbent, particulate or monolithic catalyst, etc.422/180, Unitary (i.e., nonparticulate) contact bed (e.g., monolithic catalyst bed, etc.)422/205, Including baffle or stirring means disposed within jacket or chamber, the baffle means within chamber connected directly to wall thereof422/220, And reactant flow distributor upstream of contact means and within reaction chamber modifying velocity profile of reactant flow422/222Unitary (i.e., nonparticulate) contact bed, (e.g., monolithic catalyst bed, etc.)ExaminersPrimary: Warden, Robert J.Assistant: Kummert, Lynn M. Foreign Patent References
International ClassesF01N 003/10F01N 007/08 B01D 053/36 AbstractA thin, convoluted wall member disposed upstream of the inlet of a diffuser generates large-scale vortices having axes in the downstream direction. The vortices enhance mixing within the diffuser and can also energize the boundary layer, thereby improving diffuser performance and delaying the onset of stall. Greater diffusion angles without stall are possible. The member itself creates low losses.Field of SearchIncluding waste gas flow distributor upstream of reaction site and within reaction chamber modifying velocity profile of gasIncluding solid, extended surface, fluid contact reaction means; e.g., inert Raschig rings, particulate absorbent, particulate or monolithic catalyst, etc. Unitary (i.e., nonparticulate) contact bed (e.g., monolithic catalyst bed, etc.) And reactant flow distributor upstream of contact means and within reaction chamber modifying velocity profile of reactant flow Unitary (i.e., nonparticulate) contact bed, (e.g., monolithic catalyst bed, etc.) Including baffle or stirring means disposed within jacket or chamber, the baffle means within chamber connected directly to wall thereof Oxygenator Parallel and continuous nonplanar members (e.g., crimped, corrugated, curved) Corrugated, ribbed, crimped, or with projections Impeller upstream of separating media MISCELLANEOUS (E.G., SHAPES) Including expansion chamber With distinct flow director in casing Longitudinal With internal flow director | |
