Gas separation – Deflector – Plural deflectors overlapped and spaced serially in gas flow
Patent
1998-11-13
2000-09-19
Simmons, David A.
Gas separation
Deflector
Plural deflectors overlapped and spaced serially in gas flow
55443, 55444, 55524, 55DIG39, B01D 4508
Patent
active
061205737
ABSTRACT:
A separation plate (10) includes a first surface (10a) and an opposing second surface. A plurality of teardrop-shaped virtual impactor projections (12) are provided on the first surface, preferably in a plurality of rows (13a, 13b, 13c). Each projection includes a convex leading profile (18) facing a fluid stream (16), and two concave side surfaces (19) that are positioned to define a tapered downstream portion. The convex leading profile may include a concave portion (20). The concave portion defines a virtual impact void therethrough. The virtual impact void defines a terminal end of a passageway that extends through the separation plate to communicate with the second surface. When particle-laden fluid is caused to flow along the first surface, a major portion of the fluid containing a minor portion of particles flows around the teardrop-shaped virtual impactor projections along the first surface. A minor portion of the fluid containing a major portion of particles is collected near the convex leading profiles of the projections, and enters the concave portions and the virtual impact voids of the projections. The minor portion of the fluid then travels through the passageways to the second surface of the separation plate, where it can be collected, analyzed, or processed further.
REFERENCES:
patent: 877460 (1908-01-01), Brunner et al.
patent: 902958 (1908-11-01), Galusha
patent: 906038 (1908-12-01), Terry
patent: 1603878 (1926-10-01), Smith
patent: 1807378 (1931-05-01), Budil
patent: 1825274 (1931-09-01), Leach
patent: 2939545 (1960-06-01), Silverman
patent: 2956641 (1960-10-01), Raub et al.
patent: 3693457 (1972-09-01), Pilat
patent: 3754868 (1973-08-01), Witz et al.
patent: 3901798 (1975-08-01), Peterson
patent: 3932151 (1976-01-01), Lau
patent: 3983743 (1976-10-01), Olin et al.
patent: 4133202 (1979-01-01), Marple
patent: 4321822 (1982-03-01), Marple et al.
patent: 4387603 (1983-06-01), Nelson
patent: 4452068 (1984-06-01), Loo
patent: 4640140 (1987-02-01), Burghoffer et al.
patent: 4670135 (1987-06-01), Marple et al.
patent: 4689052 (1987-08-01), Ogren et al.
patent: 4697462 (1987-10-01), Daube, Jr. et al.
patent: 4764186 (1988-08-01), Langer
patent: 4767524 (1988-08-01), Yeh et al.
patent: 4857276 (1989-08-01), Seto et al.
patent: 4877430 (1989-10-01), Gutermuth
patent: 4891052 (1990-01-01), Belin et al.
patent: 4941899 (1990-07-01), Liu
patent: 4942297 (1990-07-01), Johnson et al.
patent: 4990740 (1991-02-01), Meyer
patent: 5040424 (1991-08-01), Marple et al.
patent: 5128539 (1992-07-01), Rodgers et al.
patent: 5254861 (1993-10-01), Carpenter et al.
patent: 5318609 (1994-06-01), Kittler
patent: 5332550 (1994-07-01), Booker
patent: 5412975 (1995-05-01), Raabe et al.
patent: 5425802 (1995-06-01), Burton et al.
patent: 5472645 (1995-12-01), Rock et al.
patent: 5498271 (1996-03-01), Marple et al.
patent: 5512216 (1996-04-01), Rock et al.
patent: 5533406 (1996-07-01), Geise
patent: 6010554 (2000-01-01), Birmingham et al.
de la Mora, J.F., "Aerodynamic Focusing of Particles and Heavy Molecules, First Annual Report," NTIS, Feb. 16, 1988, 16 pages.
de la Mora, J.F., "Aerodynamic Focusing of Particles and Heavy Molecules. Final Report," NTIS, Jan. 8, 1990, 12 pages.
de la Mora, J.F., "Drastic Improvement of the Resolution of Aerosol Size Spectrometers via Aerodynamic Focusing: The Case of Variable-Pressure Impactors," Chemical Engineering Communications, vol. 151, 1996, pp. 101-124.
de la Mora, J.F., et al., "Aerodynamic Focusing of Particles in a Carrier Gas," Journal of Fluid Mechanics, vol. 195, Oct. 1988, pp. 1-21.
Fernandez-Feria, R., et al., "Brownian-Motion Limited Aerodynamic Focusing of Heavy Molecules," Rarefied Gas Dynamics, Beylich, A.E., Ed., Proceedings of the 17th International Symposium on Rarefied Gas Dynamics, Jul. 8-14, 1990, pp. 214-221.
Fuerstenau, S., et al., "Visualization of Aerodynamically Focused Subsonic Aerosol Jets," Journal of Aerosol Science, vol. 25, No. 1, Jan. 1994, pp. 165-173.
Hochrainer, D., Institut fur Aerobiologie, "Measurement of Aerosol Particle Size Distribution with an Improved Spectral Impactor," NTIS No. N7323533, 1973, 26 pages.
Jurcik, B., et al., "On the Shape of Impactor Efficiency Curves," Journal of Aerosol Science, vol. 26, No. 7, 1995, pp. 1139-1147.
Liu, P., et al., "Optimizing the Detection Efficiency of a Low Pressure, In-Situ Particle Monitor Using Aerodynamic Focusing Lenses," Proceedings --Institute of Environmental Sciences, 1996, pp. 217-224.
Patent Cooperation Treaty Search Report, PCT-US98-12471, Corona Catalysis Corporation et al., Oct. 14, 1998.
Vance, Richard F., "Slanted Baffle Mist Eliminator", U.S. Statutory Invention, Registration No. H1499, Nov. 7, 1995.
Birmingham Joseph G.
Call Charles J.
Call Patrick T.
Hammerstom Donald J.
Kenning Vanessa M.
MesoSystems Technology, Inc.
Pham Minh-Chau T.
Simmons David A.
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