Multiple blade damper assembly

Details Multiple blade damper assembly Multiple blade damper assembly

1982-01-11

1983-12-27

Nilson, Robert G.

Fluid handling

Systems

Dividing into parallel flow paths with recombining

13724622, F16K 122, F24F 1316

Patent

active

RE0314714

ABSTRACT:
A damper assembly including a plurality of damper blades pivotable about parallel axes. Each blade includes a pair of parallel plates spaced apart by supporting members, the plates providing an open fluid passageway through the blade. When the damper blades are in the closed condition, the passageways form a single enclosed space into which pressurized sealing air may be introduced to render the damper gastight with respect to gases in the main duct. In the open condition the damper blades offer very little flow resistance by allowing conduit gases to flow through the passageways between the plates of the blades.

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patent: 3771559 (1973-11-01), Alley
patent: 4077432 (1978-03-01), Herr

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