US 11,885,338 B2
Housing for a centrifugal compressor
Tibor Urac, Mississauga (CA); and Bernard Chow, Mississauga (CA)
Assigned to PRATT & WHITNEY CANADA CORP., Longueuil (CA)
Filed by PRATT & WHITNEY CANADA CORP., Longueuil (CA)
Filed on Feb. 19, 2021, as Appl. No. 17/180,262.
Prior Publication US 2022/0268285 A1, Aug. 25, 2022
Int. Cl. F04D 17/10 (2006.01); F01D 9/04 (2006.01); F04D 29/42 (2006.01); F01D 5/04 (2006.01)
CPC F04D 17/10 (2013.01) [F01D 5/043 (2013.01); F01D 9/045 (2013.01); F04D 29/4206 (2013.01); F05D 2220/32 (2013.01); F05D 2240/24 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A centrifugal compressor for a gas turbine engine, comprising:
an impeller having blades extending from a hub to blade tips, the impeller having an inlet and an outlet; and
a housing disposed around the impeller, the impeller rotatable relative to the housing about a central axis, the housing including:
a shroud annularly extending around the blade tips of the impeller and extending in a streamwise direction between a first end proximate the inlet of the impeller and a second end proximate the outlet of the impeller, the shroud having a gaspath side facing the impeller and a rear side opposed to the gaspath side;
a structural member supporting the shroud, the structural member having an outer end securable to a casing of the gas turbine engine, an inner end of the structural member intersecting the rear side of the shroud at a location between the first end and the second end, a portion of the shroud extending radially outwardly from the location, the portion being cantilevered from the structural member, the shroud having a radially-outer portion extending from a projection of the structural member on the gaspath side to the second end, the radially-outer portion having a radial height from the projection to the second end along a radial direction relative to the central axis, the first radius ranging from 10% to 40% of the radial height; and
a reinforced region at the location where the structural member and the rear side of the shroud intersect, the reinforced region annularly extending around the central axis, the portion of the shroud supported solely at the reinforced region, a thickness of the reinforced region in a direction normal to the gaspath side being greater than a nominal thickness of the shroud outside the reinforced region, the reinforced region defining a curved surface extending from a first location on the structural member to a second location on the rear side of the shroud, the second location being disposed between the structural member and the second end of the shroud, a portion of the curved surface having a radius that increases from a first radius to a second radius at the second location.