F - Mech Eng,Light,Heat,Weapons – 24 – F
Patent
F - Mech Eng,Light,Heat,Weapons
24
F
F24F 13/10 (2006.01) B08B 15/00 (2006.01) F15D 1/02 (2006.01) F24C 15/20 (2006.01) F24F 13/08 (2006.01) F24F 13/14 (2006.01)
Patent
CA 2640840
A flow control device has a duct section with a plurality of damper blocking elements, each having a major plane. The damper blocking elements are pivotably connected to the duct section and movable in a range that is limited to ensure that, when the duct section is mounted in a preferred orientation, the damper blocking element major planes always form an angle of at least 45 degrees from the horizontal throughout the range. The range is such that the plurality of damper blocking elements can selectively close and open the duct. Preferably the blocking elements are capable of completely closing the duct, for example to block natural convection.
Beardslee Darrin W.
Faller Andrew C.
Livchak Andrey V.
Schrock Derek W.
Oy Halton Group Ltd.
Riches Mckenzie & Herbert Llp
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