Damper with curved extension plates for wide range flow control

Details Damper with curved extension plates for wide range flow control Damper with curved extension plates for wide range flow control

F - Mech Eng,Light,Heat,Weapons

16

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137/137, 126/62

F16L 55/04 (2006.01) B01J 8/18 (2006.01) F16L 55/055 (2006.01) F23C 10/18 (2006.01) F23L 13/02 (2006.01)

Patent

CA 1084387

ABSTRACT OF THE DISCLOSURE A damper for fluid flow control has a curved ex- tension plate positioned with respect to the circular path defined by the end of a pivotal damper blade to provide close control of the effective open area over a wide range of damper openings. The curved extension plate has a straight portion connected tangentially to one end of an arcuate portion. The arcuate portion of the extension plate approximates the shape of a theoretically ideal curve such that in cooperation with pivoting of the damper blade, the free flow area increases approximately linear with damper opening to provide a linear response between damper blade position and fluid flow rate.

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