Gas and liquid contact apparatus – Fluid distribution – Pumping
Patent
1988-11-16
1990-01-02
Garrett, Robert E.
Gas and liquid contact apparatus
Fluid distribution
Pumping
415207, 4151821, 138 39, 138177, 285177, B01D 4700
Patent
active
048911690
ABSTRACT:
The present invention provides a curvilinear transition duct for use with a centrifugal fan that affords optimal fan efficiency without undue duct length. The duct comprises a top section of generally concave planar shape when viewed from above and a bottom section. Side sections join the top and bottom sections to form a four sided structure having an inlet opening at one side and an outlet opening at the other side. The preferred bottom section is of a generally longer longitudinal length than the top section. Further, the preferred duct has a plane in contact with the edges of the inlet opening which intersect a plane in contact with the outlet openings at a level above the duct. The angle formed between the planes would be 1.degree. to 60.degree..
REFERENCES:
patent: 1467168 (1923-09-01), Kaplan
patent: 2216864 (1940-10-01), Wasmund
patent: 2590797 (1952-03-01), Siciliano
patent: 3132190 (1964-05-01), Engalitcheff, Jr.
Time Saving Furnace Pipe and Fittings by Buckeye Furnace Pipe Company, Sep. 1957, pp. 10 and 13.
Grand Island Furnace & Supply Co., G.I. Catalog 502, Sep. 1957, pp. 4 and 13.
Standard Furnace Supply Co., Sep. 1957.
Harrison, Jr. Richard H.
Kaplan Vladimir
AMSTED Industries Inc.
Bouton Charles E.
Brosius Edward J.
Garrett Robert E.
Kwon John T.
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