IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0335577
(2011-12-22)
|
등록번호 |
US-8967952
(2015-03-03)
|
발명자
/ 주소 |
- Jones, James
- Maurer, John H.
- Ward, Eric J.
- Bursey, Jr., Roger W.
|
출원인 / 주소 |
- United Technologies Corporation
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
11 |
초록
▼
A rotational duct blocker for a gas turbine engine includes a duct blocker rotor and a duct blocker stator. The duct blocker rotor includes a plurality of first flow apertures extending axially therethrough, and a plurality of roller elements connected to an inner rotor platform. The first flow aper
A rotational duct blocker for a gas turbine engine includes a duct blocker rotor and a duct blocker stator. The duct blocker rotor includes a plurality of first flow apertures extending axially therethrough, and a plurality of roller elements connected to an inner rotor platform. The first flow apertures are arranged circumferentially around the inner rotor platform. The duct blocker stator includes a plurality of second flow apertures extending axially therethrough, and a roller element track located radially within the inner rotor platform and in rolling contact with the roller elements. The second flow apertures are arranged circumferentially around an inner stator platform that is located axially adjacent to the inner rotor platform. The duct blocker rotor rotates relative to the duct blocker stator to regulate fluid flowing between the first flow apertures and the second flow apertures.
대표청구항
▼
1. A rotational duct blocker for a gas turbine engine, comprising: a duct blocker rotor comprising a plurality of first flow apertures extending axially through the duct blocker rotor, and a plurality of roller elements connected to an inner rotor platform, wherein the first flow apertures are arran
1. A rotational duct blocker for a gas turbine engine, comprising: a duct blocker rotor comprising a plurality of first flow apertures extending axially through the duct blocker rotor, and a plurality of roller elements connected to an inner rotor platform, wherein the first flow apertures are arranged circumferentially around the inner rotor platform; anda duct blocker stator comprising a plurality of second flow apertures extending axially through the duct blocker stator, and a roller element track located radially within the inner rotor platform and in rolling contact with the roller elements, wherein the second flow apertures are arranged circumferentially around an inner stator platform that is located axially adjacent to the inner rotor platform;wherein the duct blocker rotor rotates relative to the duct blocker stator to regulate fluid flowing between the first flow apertures and the second flow apertures. 2. The duct blocker of claim 1, wherein the roller element track comprises a plurality of first track segments that are in rolling contact with the roller elements, and a plurality of second track segments that are connected to the inner stator platform by a track mount, wherein each first track segment extends circumferentially between respective adjacent second track segments. 3. The duct blocker of claim 2, wherein the track mount comprises a mounting rail and a circumferential slot that extends radially therethrough, and axially between a first one of the first track segments and the mounting rail. 4. The duct blocker of claim 3, wherein a first one of the roller elements is preloaded against the first one of the first track segments. 5. The duct blocker of claim 3, wherein a second one of the first track segments is connected to the mounting rail by a track mount segment. 6. The duct blocker of claim 2, wherein the roller element track comprises a plurality of hardened run strips arranged respectively between the first track segments and the roller elements. 7. The duct blocker of claim 1, wherein: the duct blocker rotor further comprises a plurality of first vane segments that extend radially between the inner rotor platform and an outer rotor platform, wherein each first flow aperture extends circumferentially between respective adjacent first vane segments; andthe duct blocker stator further comprises a plurality of second vane segments that extend radially between the inner stator platform and an outer stator platform, wherein each second flow aperture extends circumferentially between respective adjacent second vane segments. 8. The duct blocker of claim 7, wherein the duct blocker rotor further comprises a plurality of roller element wells, wherein each roller element well extends radially through the inner rotor platform and into a respective one of the first vane segments, and wherein the roller elements are located respectively within the roller element wells. 9. The duct blocker of claim 8, wherein each roller element well extends axially between a first mounting aperture and a second mounting aperture, and wherein each roller element is mounted on an axle that is seated within the first mounting aperture and the second mounting aperture. 10. The duct blocker of claim 9, wherein the axle comprises a keyed end that extends through a keyway aperture in an axle mounting clip, and wherein the axle mounting clip is connected to a respective one of the first vane segments. 11. A gas turbine engine, comprising: a bypass flow duct; anda rotational duct blocker arranged within the bypass flow duct, and comprising a duct blocker rotor comprising a plurality of first flow apertures extending axially through the duct blocker rotor, and a plurality of roller elements connected to an inner rotor platform, wherein the first flow apertures are arranged circumferentially around the inner rotor platform; anda duct blocker stator comprising a plurality of second flow apertures extending axially through the duct blocker stator, and a roller element track located radially within the inner rotor platform and in rolling contact with the roller elements, wherein the second flow apertures are arranged circumferentially around an inner stator platform that is located axially adjacent to the inner rotor platform;wherein the duct blocker rotor rotates relative to the duct blocker stator to regulate fluid flowing through the bypass flow duct. 12. The engine of claim 11, wherein the roller element track comprises a plurality of first track segments that are in rolling contact with the roller elements, and a plurality of second track segments that are connected to the inner stator platform by a track mount, wherein each first track segment extends circumferentially between respective adjacent second track segments. 13. The engine of claim 12, wherein the track mount comprises a mounting rail and a circumferential slot that extends radially therethrough, and axially between a first one of the first track segments and the mounting rail. 14. The engine of claim 13, wherein a first one of the roller elements is preloaded against the first one of the first track segments. 15. The engine of claim 13, wherein a second one of the first track segments is connected to the mounting rail by a track mount segment. 16. The engine of claim 12, wherein the roller element track comprises a plurality of hardened run strips arranged respectively between the first track segments and the roller elements. 17. The engine of claim 11, wherein: the duct blocker rotor further comprises a plurality of first vane segments that extend radially between the inner rotor platform and an outer rotor platform, wherein each first flow aperture extends circumferentially between respective adjacent first vane segments; andthe duct blocker stator further comprises a plurality of second vane segments that extend radially between the inner stator platform and an outer stator platform, wherein each second flow aperture extends circumferentially between respective adjacent second vane segments. 18. The engine of claim 17, wherein the duct blocker rotor further comprises a plurality of roller element wells, wherein each roller element well extends radially through the inner rotor platform and into a respective one of the first vane segments, and wherein the roller elements are located respectively within the roller element wells. 19. The engine of claim 18, wherein each roller element well extends axially between a first mounting aperture and a second mounting aperture, and wherein each roller element is mounted on an axle that is seated within the first mounting aperture and the second mounting aperture. 20. The engine of claim 19, wherein the axle comprises a keyed end that extends through a keyway aperture in an axle mounting clip, and wherein the axle mounting clip is connected to a respective one of the first vane segments.
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