System for controlling the flow of gaseous fluids

Details System for controlling the flow of gaseous fluids System for controlling the flow of gaseous fluids

1979-05-21

1981-03-03

Nilson, Robert G.

Fluid handling

Systems

Dividing into parallel flow paths with recombining

98121A, 138172, 138DIG4, F23L 1308

Patent

active

042534925

ABSTRACT:
A duct, presumably that of a utility boiler or the like, has a frame mounted on its internal walls. Parallel louver blades are mounted in the frame and linked for simultaneous actuation to move the louver-blades between a first position where they seal the frame opening against the flow of gaseous fluid and a second position where they permit the relatively free flow of gaseous fluid through the frame. Bearings for the louver shafts are mounted external the duct in which the frame is mounted and a truss is attached to the upstream and downstream edges of the frame to insure dimensional stability under the stress applied to the duct by the varying pressure and temperature of the gaseous fluid passing through the duct.

REFERENCES:
patent: Re30204 (1980-02-01), Root
patent: 941367 (1909-11-01), House
patent: 2811094 (1957-10-01), Auer
patent: 3202184 (1965-08-01), Godshalk
patent: 3275031 (1966-09-01), Alyea
patent: 3547152 (1970-12-01), Hess
patent: 3771559 (1973-11-01), Alley
patent: 3972348 (1976-08-01), Hagar

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