Compressor power and torque transmitting hub
A compressor hub includes a sleeve portion, a cone portion, and a mounting flange portion. The sleeve portion is cylindrical about a sleeve axis. The frustoconical cone portion is attached to the sleeve portion and diverges radially outward. In addition, the cone portion includes an inner cone portion with an inner generatrix and an outer cone portion with an outer generatrix that is colinear with the inner generatrix. The mounting flange portion is attached to the outer cone for attaching a rotor disk to the compressor hub.
1. A compressor hub comprising:
a sleeve portion that is cylindrical about a sleeve axis; wherein the sleeve portion includes an inner sleeve surface opposing an outer sleeve surface, the inner sleeve surface having an inner spline and the outer sleeve surface having an outer spline
a frustoconical cone portion attached to the sleeve portion that diverges forward and radially outward, the cone portion comprising:
an inner cone portion adjacent to the sleeve portion, the inner cone portion having a frustoconical shape including a forward inner cone surface opposing an aftward inner cone surface that are bisected by an inner generatrix that is equidistant from the forward inner cone surface and the aftward inner cone surface; and
an outer cone portion adjacent to the inner cone portion, the outer cone portion having a frustoconical shape including a forward outer cone surface opposing an aftward outer cone surface that are bisected by an outer generatrix that is equidistant from the forward outer cone surface and the aftward outer cone surface, wherein the inner generatrix and the outer generatrix are colinear; and
a mounting flange portion attached to the outer cone for attaching a rotor disk to the compressor hub.
2. The compressor hub of claim 1 , wherein the compressor hub is a single component.
3. The compressor hub of claim 1 , wherein the cone portion diverges from the sleeve portion at an acute cone angle.
4. The compressor hub of claim 1 , and further comprising:
a seal portion attached to at least one of the cone portion and the sleeve portion.
5. The compressor hub of claim 1 , and further comprising:
a plurality of flow apertures through at least one of the cone portion and the sleeve portion.
6. The compressor hub of claim 1 , wherein a first distance between the forward inner cone surface and the aftward inner cone surface is greater than a second distance between the forward outer cone surface and the aftward outer cone surface.
7. A compressor hub comprising:
a sleeve portion that is cylindrical about a sleeve axis, the sleeve including an inner sleeve surface opposing an outer sleeve surface, the inner sleeve surface having an inner spline and the outer sleeve surface having an outer spline;
a frustoconical cone portion attached to the sleeve that diverges forward and radially outward; and
a mounting flange attached to an outer end of the cone portion for attaching a rotor disk to the compressor hub.
8. The compressor hub of claim 7 , wherein the compressor hub is a single component.
9. The compressor hub of claim 7 , wherein the cone portion diverges from the sleeve portion at an acute cone angle.
10. The compressor hub of claim 7 , and further comprising:
a seal portion attached to at least one of the cone portion and the sleeve portion.
11. The compressor hub of claim 7 , and further comprising:
a plurality of flow apertures through at least one of the cone portion and the sleeve portion.
12. The compressor hub of claim 7 , wherein the cone portion is attached to the sleeve portion near the aftward end of the sleeve portion.
13. The compressor hub of claim 7 , wherein the inner spline and the outer spline are spaced apart from each other along the sleeve axis such that the inner spline does not overlap the outer spline.
14. The compressor hub of claim 13 , wherein the inner spline is aftward of the outer spline.
15. A compressor comprising:
a single piece compressor hub including:
a sleeve portion that is cylindrical about a sleeve axis, wherein the sleeve portion of the hub includes an inner sleeve surface opposing an outer sleeve surface, the inner sleeve surface having an inner spline and the outer sleeve surface having an outer spline; and
a frustoconical cone portion extending from the sleeve portion that diverges forward and radially outward; and
a mounting flange portion adjacent to an outer end of the cone portion;
a first rotor disk attached to the mounting flange; and
a second rotor disk attached to the mounting flange.
16. The compressor of claim 15 , and further comprising:
a third rotor disk attached to the mounting flange.
17. The compressor of claim 15 , wherein the mounting flange portion is comprised of a plurality of circumferentially separated tabs that each includes a mounting hole for attaching at least one of the rotor disks.
18. The compressor hub of claim 15 , and further comprising:
a plurality of flow apertures through at least one of the cone portion and the sleeve portion.
19. The compressor of claim 15 , wherein the cone portion of the compressor hub comprises:
an inner cone portion adjacent to the sleeve portion, the inner cone portion having a frustoconical shape including a forward inner cone surface opposing an aftward inner cone surface that are bisected by an inner generatrix that is equidistant from the forward inner cone surface and the aftward inner cone surface; and
an outer cone portion adjacent to the inner cone portion, the outer cone portion having a frustoconical shape including a forward outer cone surface opposing an aftward outer cone surface that are bisected by an outer generatrix that is equidistant from the forward outer cone surface and the aftward outer cone surface;
wherein the inner generatrix and the outer generatrix are colinear.
20. The compressor of claim 19 , wherein the sleeve portion of the hub includes an inner sleeve surface opposing an outer sleeve surface, the inner sleeve surface having an inner spline and the outer sleeve surface having an outer spline.