US Patent 10323853 Ventilation system and method

Embodiments of the invention provide a ventilation assembly including a scroll assembly that can include a blower assembly including a motor coupled to a blower wheel. Some embodiments include a discharge grid capable of being coupled to the scroll using a coupling pin or snap tabs. In some embodiments, the discharge grid includes a plurality of vertical and horizontal fins, and an outlet restriction. In some embodiments, at least one of the plurality of horizontal fins extends from the outlet restriction to couple with at least one vertical fin to form an aperture. In other embodiments, at least a portion of at least one of the plurality of vertical and horizontal fins includes a flared surface. Some embodiments include a scroll assembly that includes a scroll crescent. In some embodiments, a scroll including a discharge grid and scroll crescent can at least partially guide a fluid within the ventilation assembly.