US Patent 12004450 Cleaning fan for a fruit harvester

A cleaning fan for use in a cleaning system of a fruit harvester includes a housing and a rotor disposed within the housing. The rotor includes a hub and a plurality of blades. The cleaning fan is configured as a mixed flow fan combining high-volume flow characteristics with increased pressure delivery characteristics. The hub is a frustroconical shaped hub with an axis of rotation, a smaller diameter inlet end, and a larger diameter outlet end. Each of the blades is attached to the hub and curves from the inlet end toward the outlet end, relative to a direction of rotation of the rotor, whereby air is blown during operation both axially and radially.