US 12,188,357 B2
Turbomachinery seal plate with variable lattice densities
Brent J. Merritt, Southwick, MA (US); and Craig M. Beers, Wethersfield, CT (US)
Assigned to Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed by Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed on Sep. 26, 2023, as Appl. No. 18/474,410.
Application 18/474,410 is a continuation of application No. 17/472,153, filed on Sep. 10, 2021, granted, now 11,802,488.
Prior Publication US 2024/0011406 A1, Jan. 11, 2024
Int. Cl. F01D 25/28 (2006.01); F01D 11/00 (2006.01)
CPC F01D 11/005 (2013.01) [F01D 25/28 (2013.01); F05D 2220/34 (2013.01); F05D 2240/55 (2013.01); F05D 2250/18 (2013.01); F05D 2250/90 (2013.01); F05D 2260/31 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A seal plate for a rotary machine, the seal plate comprising:
a hub centered on a central axis of the rotary machine;
a disk portion extending radially outwards from the hub; and
a variable lattice structure in an interior of the seal plate, wherein the variable lattice structure comprises:
a first plurality of holes in the disk portion;
a second plurality of holes positioned radially outward from the first plurality of holes in the disk portion;
a first region of the seal plate having a first lattice structure, wherein the first region of the seal plate is in the first disk portion; and
a second region of the seal plate having a second lattice structure, wherein the second region of the seal plate is the hub of the seal plate;
a third region of the seal plate having a third lattice structure;
wherein the second lattice structure of the second region is denser than the first lattice structure of the first region, and the third lattice structure of the third region is denser than the first lattice structure of the first region;
wherein the first region surrounds the second plurality of holes, and the third region surrounds the first plurality of holes; and
wherein the second region is a deflection region and wherein the deflection region is a region of the seal plate subject to deflections.