IMPELLER WITH OFFSET SPLITTER BLADES

摘要

An impeller includes a hub mountable to a rotary shaft and configured to rotate about a center axis. The impeller may include a plurality of main blades and splitter blades arranged equidistantly and circumferentially about the center axis. A splitter blade having a leading edge and a trailing edge may be positioned between first and second adjacent main blades and canted such that the leading edge is displaced from a blade position equidistant the first and second adjacent main blades a first percentage amount of one half an angular distance between the first and second adjacent main blades. The trailing edge may be displaced from the blade position equidistant the first and second adjacent main blades a second percentage amount of one half the angular distance between the first and second adjacent main blades. The second percentage amount may be greater or less than the first percentage amount.

主权项

1. An impeller for a compressor, comprising:
a hub mountable to a rotary shaft of the compressor and configured to rotate about a center axis, the hub comprising a first meridional end portion and a second meridional end portion; a plurality of main blades mounted to or integral with the hub, the plurality of main blades arranged equidistantly and circumferentially about the center axis; and a plurality of splitter blades mounted to or integral with the hub, the plurality of splitter blades arranged equidistantly and circumferentially about the center axis, each splitter blade comprising a leading edge meridionally spaced from the first meridional end portion and a trailing edge proximal the second meridional end portion, wherein a splitter blade is positioned between a first adjacent main blade and a second adjacent main blade and canted such that the leading edge of the splitter blade is displaced from a blade position equidistant the first adjacent main blade and the second adjacent main blade a first percentage amount of one half an angular distance between the first adjacent main blade and the second adjacent main blade, and the trailing edge of the splitter blade is displaced from the blade position equidistant the first adjacent main blade and the second adjacent main blade a second percentage amount of one half the angular distance between the first adjacent main blade and the second adjacent main blade, the second percentage amount being greater or less than the first percentage amount.