Patent ID: 9206820
Filing Date: 2015-12-08
Classification: F04D

Abstract:
1. An inducer comprising: a hub having an inlet end and an outlet end; at least one full size blade having a full size blade inner edge affixed to said hub and an opposing full size blade outer edge, said full size blade extending rearwardly from said inlet end in a helical configuration; a partial shroud enclosing a first length of said full size blade outer edge that is adjacent to said inlet end with a second length of said full size blade outer edge that is adjacent to said outlet end being free of said partial shroud; and a first set of short blades symmetrically offset from said full size blades, said first set of short blades having a short blade inner end affixed to said hub and a short blade outer end extending from said hub towards said partial shroud, wherein said first set of short blades is axially offset from said at least one full size blade.