Robert S Downing

US Patent:

8506240, Aug 13, 2013

Filed:

Oct 21, 2011

Appl. No.:

13/279231

Inventors:

Mark F. Franzen - Brodhead WI, US
Robert Scott Downing - Rockford IL, US

Assignee:

Hamilton Sundstrand Corporation - Windsor Locks CT

International Classification:

F01D 11/00

US Classification:

415112

Abstract:

A free-surface liquid transfer apparatus for rotating machinery includes a rotating member. The rotating member includes a main shaft defining a hollow inner cavity, an outer cylindrical wall defining a hollow annular cavity in fluid communication with the hollow inner cavity through a plurality of orifices formed on the main shaft, and a slinger formation in fluid communication with the hollow annular cavity through a plurality of radial slots formed through the slinger formation. A central axis of the main shaft, a central axis of the hollow annular cavity, and a central axis of the slinger formation are collinear, and the slinger formation is configured to transmit working fluid received through the plurality of radial slots outward as a continuous film having both tangential and radial velocity components.