US 12,442,310 B2
Turbine engine scroll for use with an internal combustion engine
Remo Marini, Lasalle (CA); and Christopher J. Gover, Longueuil (CA)
Assigned to Pratt & Whitney Canada Corp., Longueuil (CA)
Filed by Pratt & Whitney Canada Corp., Longueuil (CA)
Filed on Mar. 31, 2023, as Appl. No. 18/129,616.
Prior Publication US 2024/0328323 A1, Oct. 3, 2024
Int. Cl. F01D 9/04 (2006.01)
CPC F01D 9/048 (2013.01) [F01D 9/041 (2013.01); F05D 2240/12 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A turbine scroll for use with an axial turbine, comprising:
a flow channel defined by an outer radial wall extending between a first axial sidewall and a second axial sidewall, the first axial sidewall and second axial sidewall spaced widthwise apart from one another, the flow channel extending circumferentially around a center axis;
a scroll inlet configured to permit gas flow into the flow channel;
a plurality of stator vanes disposed within the flow channel, spaced apart from one another and disposed around a circumference of the scroll, each stator vane having a suction side surface extending between a leading edge and a trailing edge, and a pressure side surface having a pressure side (PS) intervane passage portion and a trailing edge (TE) arc annular portion, the PS intervane passage portion extending arcuately inward and continuously along an entire length of the PS intervane passage portion between the leading edge and the TE arc annular portion, the TE arc annular portion extending arcuately between the trailing edge and the PS intervane passage portion, and the PS intervane passage portion and the TE arc annular portion meet at an inflection point; and
a plurality of vane passages, each vane passage defined between adjacent said stator vanes of the plurality of stator vanes, each vane passage is open to an outer flow channel portion of the flow channel disposed radially between the stator vanes and the outer radial wall and is open to an annular region disposed radially inside of the plurality of stator vanes, the vane passages configured to direct gas flow in an inwardly spiraling direction having a radially inward component and a circumferential component.