Squirrel Cage Blower Wheel Direction

Also known as a blower wheel or squirrel cage fan applications include ventilation air conditioning heating and dehumidifying in industrial and commercial applications.
Squirrel cage blower wheel direction. A centrifugal fan is a mechanical device for moving air or other gases in a direction at an angle to the incoming fluid. Centrifugal fans often contain a ducted housing to direct outgoing air in a specific direction or across a heat sink. Hvacr professionals rely on grainger for quality direct drive centrifugal fan products for blower assemblies. The cupped side of the blades should be facing toward the direction of rotation.
008276 16 lau a15 15a blower wheel squirrel cage 15 1 2 x 15 x 1 double inlet. Helpful photos to identify your blower wheel. 008403 16 lau a12 12a blower wheel squirrel cage 13 3 16 x 12 5 8 x 1 3 4 double inlet. Shop a great selection today.
I have cleaned a few blower assemblies wheels in my limited experience but never understood exactly how where the location of the dirt on the blade affected the air flow. Identifying proper rotation of squirrel cage wheel the cupped side of the blade pushes the air at the outside edge of the wheel see pic below which creates low pressure inside the wheel thereby drawing a continuous flow of air into the inner area of the wheel then to the outer edge where it gets pushed against the inside wall of. Blower wheels squirrel cage radial or paddle wheels for centrifugal blowers have numerous design options including single and double inlet tangential crossflow forward curve backward curve backward inclined in press lock preslok tabbed riveted spider construction. I realize it could be low r 22 but the squirrel cage does have a significant layer.