IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0847493
(2010-07-30)
|
등록번호 |
US-8308426
(2012-11-13)
|
발명자
/ 주소 |
- Cigal, Brian P.
- Metzger, Mark A.
|
출원인 / 주소 |
- United Technologies Corporation
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
8 인용 특허 :
9 |
초록
▼
A shaft assembly for a gas turbine engine includes a shaft, an annular fluid collection cavity, and a bearing. The shaft is rotatable around an axially extending shaft centerline. The annular fluid collection cavity is formed by an axial panel extending between a forward radial panel and an aft radi
A shaft assembly for a gas turbine engine includes a shaft, an annular fluid collection cavity, and a bearing. The shaft is rotatable around an axially extending shaft centerline. The annular fluid collection cavity is formed by an axial panel extending between a forward radial panel and an aft radial panel. The aft radial panel includes a plurality of fluid apertures, each fluid aperture having a center disposed at a first radius from the shaft centerline. The bearing includes an inner race having a shaft mounting surface and a plurality of axially extending race fluid passages. The shaft mounting surface is engaged with an exterior surface of the shaft, and is disposed at a second radius from the shaft centerline, wherein the second radius is less than the first radius. At least some of the axially extending race fluid passages are fluidly connected with at least some of the fluid apertures in the aft radial panel.
대표청구항
▼
1. A shaft assembly for a gas turbine engine, comprising: a shaft rotatable around an axially extending shaft centerline; an annular fluid collection cavity formed by an axial panel extending between a forward radial panel and an aft radial panel, which aft radial panel includes a plurality of fluid
1. A shaft assembly for a gas turbine engine, comprising: a shaft rotatable around an axially extending shaft centerline; an annular fluid collection cavity formed by an axial panel extending between a forward radial panel and an aft radial panel, which aft radial panel includes a plurality of fluid apertures, each fluid aperture having a center disposed at a first radius from the shaft centerline; and a bearing including an inner race having a shaft mounting surface and a plurality of axially extending race fluid passages, which shaft mounting surface is engaged with an exterior surface of the shaft and is disposed at a second radius from the shaft centerline, and which second radius is less than the first radius, wherein at least some of the axially extending race fluid passages are fluidly connected with at least some of the fluid apertures in the aft radial panel; and further comprising an annular seal plate mounted onto the shaft adjacent to and aft of the bearing, which seal plate includes a plurality of seal plate fluid passages fluidly connected to at least some of the axially extending race fluid passages. 2. The shaft assembly of claim 1, wherein the inner race further includes a plurality of radially extending race fluid passages that are fluidly connected to the axially extending race fluid passages, each of which radially extending race fluid passages extends to an outer radial surface of the inner race. 3. The shaft assembly of claim 1, wherein the bearing is adapted as one of a ball bearing, a roller bearing, a needle bearing, a tapered roller bearing, a spherical roller bearing and a thrust bearing. 4. A shaft assembly for a as turbine engine, comprising: a shaft rotatable around an axially extending shaft centerline;an annular fluid collection cavity formed by an axial panel extending between a forward radial panel and an aft radial panel, which aft radial panel includes a plurality of fluid apertures, each fluid aperture having a center disposed at a first radius from the shaft centerline; anda bearing including an inner race having a shaft mounting surface and a plurality of axially extending race fluid passages, which shaft mounting surface is engaged with an exterior surface of the shaft and is disposed at a second radius from the shaft centerline, and which second radius is less than the first radius, wherein at least some of the axially extending race fluid passages are fluidly connected with at least some of the fluid apertures in the aft radial panel;wherein the inner race further includes a base segment, a first flanged protrusion and a plurality of radially extending race fluid passages, which first flanged protrusion extends axially from the base segment, and which radially extending race fluid passages are fluidly connected to the axially extending race fluid passages, wherein at least some of the radially extending race fluid passages extend through the first flanged protrusion to an outer radial surface of the inner race. 5. The shaft assembly of claim 4, wherein an annular channel is formed between a flange segment of the first flanged protrusion and the base segment; andthe at least some of the radially extending race fluid passages are fluidly connected to the annular channel. 6. The shaft assembly of claim 5, wherein the base segment further includes a plurality of radially extending channels that fluidly connect the at least some of the axially extending race fluid passages to the annular channel. 7. The shaft assembly of claim 4, wherein the bearing further includes an annular baffle having a sloped fluid guiding surface positioned to direct a quantity of fluid from at least some of the axially extending race fluid passages to at least some of the radially extending race fluid passages. 8. The shaft assembly of claim 4, wherein the inner race further includes a second flanged protrusion that extends axially from the base segment opposite the first flanged protrusion; andat least some of the radially extending race fluid passages extend through the second flanged protrusion to the outer radial surface of the inner race. 9. The shaft assembly of claim 8, wherein the bearing further includes first and second annular baffles, each annular baffle having a sloped fluid guiding surface positioned to direct fluid from respective axially extending race fluid passages to respective radially extending race fluid passages. 10. A shaft assembly for a gas turbine engine, comprising: a shaft rotatable around an axially extending shaft centerline;an annular fluid collection cavity formed by an axial panel extending between a forward radial panel and an aft radial panel, which aft radial panel includes a plurality of fluid apertures, each fluid aperture having a center disposed at a first radius from the shaft centerline;a bearing including an inner race having a shaft mounting surface and a plurality of axially extending race fluid passages, which shaft mounting surface is engaged with an exterior surface of the shaft and is disposed at a second radius from the shaft centerline, and which second radius is less than the first radius, wherein at least some of the axially extending race fluid passages are fluidly connected with at least some of the fluid apertures in the aft radial panel; anda gear mounted onto the shaft between the aft radial panel and the bearing, which gear includes a plurality of gear fluid passages that fluidly connect at least some of the fluid apertures in the aft radial panel to at least some of the axially extending race fluid passages, each of which gear fluid passages extends axially along a gear passage centerline that is disposed at a third radius from the shaft centerline, and which third radius is greater than the second radius. 11. A shaft assembly for a gas turbine engine, comprising: a shaft rotatable around an axially extending shaft centerline;an annular fluid collection cavity formed by an axial panel extending between a forward radial panel and an aft radial panel, which aft radial panel includes a plurality of fluid apertures, each fluid aperture having a center disposed at a first radius from the shaft centerline;a gear mounted onto the shaft, aft of the aft radial panel, which gear includes a plurality of gear fluid passages that are fluidly connected to at least some of the fluid apertures in the aft radial panel, each of which gear fluid passages extends axially along a gear passage centerline that is disposed at a second radius from the shaft centerline, and which second radius is greater than or equal to the first radius; anda bearing including an inner race having a shaft mounting surface and a plurality of axially extending race fluid passages, which shaft mounting surface is engaged with an exterior surface of the shaft, and disposed at a third radius from the shaft centerline, which third radius is less than the second radius, and which axially extending race fluid passages are fluidly connected to the gear fluid passages. 12. The shaft assembly of claim 11, wherein the inner race further includes a base segment, a first flanged protrusion and a plurality of radially extending race fluid passages, which first flanged protrusion extends axially from the base segment, and which radially extending race fluid passages are fluidly connected to the axially extending race fluid passages, wherein at least some of the radially extending race fluid passages extend through the first flanged protrusion to an outer radial surface of the inner race. 13. The shaft assembly of claim 12, wherein an annular channel is formed between a flange segment of the first flanged protrusion and the base segment; andthe at least some of the radially extending race fluid passages are fluidly connected to the annular channel. 14. The shaft assembly of claim 13, wherein the base segment further includes a plurality of radially extending channels that fluidly connect the at least some of the axially extending race fluid passages to the annular channel. 15. The shaft assembly of claim 13, wherein the bearing further includes an annular baffle having a sloped fluid guiding surface positioned to direct a quantity of fluid from the at least some of the axially extending race fluid passages to the annular channel. 16. The shaft assembly of claim 12, wherein the inner race further includes a second flanged protrusion that extends axially from the base segment opposite the first flanged protrusion; andat least some of the radially extending race fluid passages extend through the second flanged protrusion to the outer radial surface of the inner race. 17. The shaft assembly of claim 16, wherein the bearing further includes first and second annular baffles, each annular baffle having a sloped fluid guiding surface positioned to direct fluid from respective axially extending race fluid passages to respective radially extending race fluid passages.
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