F - Mech Eng,Light,Heat,Weapons – 04 – D
Patent
F - Mech Eng,Light,Heat,Weapons
04
D
98/51, 230/9
F04D 29/44 (2006.01) F04D 29/42 (2006.01) F23L 17/00 (2006.01)
Patent
CA 1277171
RADIAL UPBLAST EXHAUST FAN APPARATUS ABSTRACT OF THE INVENTION A radial upblast exhaust fan apparatus including a main housing having a fan housing in the lower portion thereof and an upper housing thereabove. A passive zone is defined between two lateral sections of the upper housing such as to divide the air flow path into two sections. The passive zone section defines a first inner wall and a second inner wall which cooperate with a first outer wall and a second outer wall defined by the upper housing to provide a first exhaust flow path and a second exhaust flow path. These walls are shaped as sectors of conical sections preferably and include end walls to isolate the first exhaust flow path from fluid flow communication with respect to the second exhaust flow path. A fan means is positionable within the fan housing to urge exhaust gases to flow upwardly through the exhaust paths. The walls of the exhaust flow paths are generally arcuate to facilitate exhaust flow. A wind band may be secured to the upper end of the exhaust housing adjacent the exhaust openings therein in spaced relation to the outer wall of the upper housing by usage of a wind band bracket. In this manner mixing of exhaust gases with ambient air is greatly facilitated. The drive for the fan may be positioned within the passive zone or externally with a belt drive device positioned within the band zone and connected operationally to the drive being externally located.
585732
Gowling Lafleur Henderson Llp
Strobic Air Corporation
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