Folding mixing impeller

摘要

A folding impeller formed around a central hub. The folding impeller has a plurality of impeller blades each formed with a leading portion that is extended from a trailing portion, with the leading and trailing portions of the blade and including an obtuse angle therebetween. The trailing portion of each blade is mounted for tangential rotation about the hub between a folded state and a spread state, wherein in the folded state an axis of the hub lies within the angle included between the leading and trailing portions of each of the impeller blades, and wherein in the spread state each blades is tangentially extended from the hub with the included angle being arranged transverse of the axis of the hub, and wherein the trailing portion is arranged substantially parallel with the axis, and the leading portion forms an angle of attack therewith.

主权项

1. A folding impeller, comprising:
a central hub having an axis of rotation defined along a cylindrical bore; a plurality of impeller blades each comprising a leading portion extended from a trailing portion and forming an obtuse angle included therebetween, the trailing portion of each impeller blade being rotatably mounted for tangential rotation about the central hub between a folded state and a spread state,
wherein in the folded state of the impeller blades, the axis of the center hub lies substantially within the included angle of each of the impeller blades, andwherein in the spread state of the impeller blades, each of the impeller blades is tangentially extended from the center hub with the included angle being arranged transverse of the axis of the center hub, and wherein the trailing portion is arranged substantially aligned with the axis, and the leading portion is arranged an angle therewith.