IDEA #70A3PJ Centrifugal compressor return passages using splitter vanes

A return section in a multistage centrifugal compressor includes a plurality of circumferentially positioned flow vanes, and a plurality of splitter vanes disposed between the flow vanes. The splitter vanes serve to minimize or eliminate regions of reverse or separated flow, resulting in improved compressor performance. https://app.acclaimip.com/pdf/6E_xUyELr4DgT_E2xAuvjIs7qascaKIGBSLHROk/US7905703B2