Axial flow combine and impeller for rotor thereof

A combination impeller and a rotor of an axial flow combine, the rotor having a center, conical a front end and being rotatable in a specified rotational direction during normal operation of the combine, the impeller comprising a front, a rear and a mount for fitting the impeller on the rotor with the rear of the impeller adjacent to the front end of the rotor and to the center of the rotor, and a pair of impeller blades extending radially outwards from the mount, the impeller blades being hook-shaped when viewed from the front of the impeller with outer ends projecting in the rotational direction of the rotor, each of the impeller blades having a leading edge and a trailing edge, the leading edge being concave adjacent to the outer end thereof and the trailing edge being convex adjacent to the outer end thereof, the impeller blades each being shaped so as to provide a space between said each blade and the rotor.

An axial flow combine harvester having a combination impeller and a rotor, the rotor having a center, a conical front end and being rotatable in a specified rotational direction during normal operation of the combine harvester, the impeller comprising a front, a rear and a mount for fitting the impeller on the rotor with the rear of the impeller adjacent to the front end of the rotor and to the center of the rotor, and a pair of impeller blades extending radially outwards from the mount, the impeller blades being hook-shaped when viewed from the front of the impeller with outer ends projecting in the rotational direction of the rotor, each of the impeller blades having a leading edge and a trailing edge, the leading edge being concave adjacent to the outer end thereof and the trailing edge being convex adjacent to the outer end thereof, the impeller blades each being shaped so as to provide a space between said each blade and the rotor.