Air flow diverter for equalizing air flow within an ice making appliance

An ice maker for a refrigerating appliance includes an ice tray having ice-forming compartments. Each ice-forming compartment includes sidewalls and a base defining an internal freezing chamber. The ice maker also includes an air flow diverter having an outer frame and a plurality of internal diverting fins that define tuned duct flutes for receiving a stream of intake air from an air handling system and distributing the stream of intake air through the plurality of tuned duct flutes as streams of cooling air directed toward the ice-forming compartments. The internal diverting fins include a predetermined spacing pattern that individually tunes each of the tuned duct flutes. The predetermined spacing pattern evenly distributes the stream of intake air among the plurality of tuned duct flutes such that each of the plurality of streams of cooling air include substantially equal air flow rates.