F - Mech Eng,Light,Heat,Weapons – 28 – C
Patent
F - Mech Eng,Light,Heat,Weapons
28
C
230/18, 165/35
F28C 1/04 (2006.01)
Patent
CA 1118393
FAN CYLINDER HAVING INVISIBLE EASED INLET Abstract of the Disclosure Air moving mechanism is provided for equipment such as direct or indirect heat exchange cooling towers. Conventional cross-sectionally elliptical eased inlet structure leading to a fan opening or cylinder surrounding a rotary fan air mover is replaced by a much simpler, less costly, apertured airflow modifying baffle member which functions to define an invisible eased inlet for the fan. The specially shaped aperture in the baffle member is configured and arranged relative to the fan cylinder inlet to cause air removed from the tower casing and directed toward the fan to follow a transition path between the baffle member and fan opening or cylinder which generally conforms to and substantially fills the opening or cylinder inlet around the entire circumference thereof. In those instances where air enters the tower casing on one side, or on opposed sides of the fan structure only, the orifice in the baffle is formed of somewhat rectangular shape with edge portions thereof aligned with the air inlet sections of the tower in greater spaced relation- ship from the axis of the fan opening or cylinder than the remaining edge portions of the aperture to compensate for the more radial airflow patterns toward the cylinder or opening from the parts of the tower which receive ambient air as contrasted with the axially oriented airflow toward the fan cylinder or opening from the closed parts of the tower casing.
316336
Bell Samuel W.
Stevenson Verne S.
Gowling Lafleur Henderson Llp
Marley Company (the)
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