[특허]Augmenter swirler pilot

General Electric Company

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내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Augmenter swirler pilot

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02K-003/10 F02K-003/00
미국특허분류(USC)	060/761; 060/762; 060/764; 060/765; 060/766; 060/776; 060/737; 060/738
출원번호	US-0089614 (2005-03-25)
등록번호	US-7437876 (2008-10-21)
발명자 / 주소	Koshoffer,John Michael
출원인 / 주소	General Electric Company
대리인 / 주소	Andes,William Scott
인용정보	피인용 횟수 : 7 인용 특허 : 27

초록
▼

A turbofan gas turbine engine augmenter includes a fuel/air swirler disposed between an axially extending bypass flowpath and an axially extending exhaust flowpath. A swirler inlet is axially open to and positioned substantially normal to the bypass flowpath and a swirler outlet is open to and positioned substantially parallel to the exhaust flowpath. A swirl chamber within the fuel/air swirler is between the swirler inlet and the swirler outlet. A swirl axis of the fuel/air swirler extends through the swirler outlet substantially normal to the exhaust flowpath. An air swirler may be centered about the swirl axis within the fuel/air swirler. The air swirler may be a louvered or have a plurality of swirling vanes. The swirler inlet may be radially offset with respect to the swirl axis. An air scoop may lead from the swirler inlet to a rounded swirler housing within which the air swirler is disposed.

대표
청구항
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What is claimed: 1. A turbofan gas turbine engine augmenter comprising: a fuel/air swirler disposed between an axially extending bypass flowpath and an axially extending exhaust flowpath, the fuel/air swirler including a swirler inlet axially open to and positioned substantially normal to the bypass flowpath, the fuel/air swirler including a swirler outlet open to and positioned substantially parallel to the exhaust flowpath, a swirl chamber within the fuel/air swirler operably disposed between the swirler inlet and the swirler outlet, and a swirl axis of the fuel/air swirler extending through the swirler outlet and substantially normal to the exhaust flowpath. 2. An augmenter according to claim 1 further comprising an air swirler within the fuel/air swirler. 3. An augmenter according to claim 2 further comprising the air swirler being centered about the swirl axis within the fuel/air swirler. 4. An augmenter according to claim 2 further comprising the air swirler being a louvered swirler. 5. An augmenter according to claim 2 further comprising the air swirler having a plurality of swirling vanes. 6. An augmenter according to claim 2 further comprising the swirler inlet being radially offset with respect to the swirl axis. 7. An augmenter according to claim 6 further comprising: the fuel/air swirler having an air scoop leading from the swirler inlet to a rounded swirler housing of the fuel/air swirler, the air swirler being disposed within the rounded swirler housing, the air scoop having a swirler inlet sidewall extending from the swirler inlet to the swirler housing, and the swirler inlet sidewall being substantially tangentially attached to the swirler housing. 8. An augmenter according to claim 7 further comprising the air swirler being centered about the swirl axis within the fuel/air swirler. 9. An augmenter according to claim 7 further comprising the air swirler being a louvered swirler. 10. An augmenter according to claim 7 further comprising the air swirler having a plurality of swirling vanes. 11. An augmenter according to claim 2 further comprising: a swirler housing surrounding the air swirler, the swirler inlet leading into the swirler housing and the swirler outlet leading out from the swirler housing, and a fuel injector disposed through the swirler housing and operably positioned to inject fuel into the swirl chamber. 12. An augmenter according to claim 11 further comprising an igniter disposed through the swirler housing and operably positioned for igniting fuel injected into the swirl chamber. 13. An augmenter according to claim 12 further comprising the air swirler being a louvered swirler centered about the swirl axis within the swirl chamber. 14. An augmenter according to claim 13 further comprising the swirler inlet being radially offset with respect to the swirl axis. 15. An augmenter according to claim 14 further comprising: the swirler housing being a rounded swirler housing, the fuel/air swirler having an air scoop leading from the swirler inlet to a rounded swirler housing of the fuel/air swirler, the air swirler being disposed within the rounded swirler housing, the swirler inlet sidewall being substantially tangentially attached to the swirler housing. 16. An augmenter according to claim 2 further comprising: the air swirler including a swirler cup, a swirler housing surrounding the swirler cup, the swirler inlet leading into the swirler housing and the swirler outlet leading out from the swirler housing, and a fuel injector disposed through the swirler housing and operably positioned to inject fuel into the swirl chamber. 17. An augmenter according to claim 16 further comprising an igniter disposed through the swirler housing and operably positioned for igniting fuel injected into the swirl chamber. 18. An augmenter according to claim 17 further comprising the swirler cup being louvered or having swirling vanes and centered about the swirl axis within the swirl chamber. 19. An augmenter according to claim 18 further comprising the swirler inlet being radially offset with respect to the swirl axis. 20. An augmenter according to claim 19 further comprising: the swirler housing being a rounded swirler housing, the fuel/air swirler having an air scoop leading from the swirler inlet to a rounded swirler housing of the fuel/air swirler, the air swirler being disposed within the rounded swirler housing, the air scoop having a swirler inlet sidewall extending from the swirler inlet to the swirler housing, and the swirler inlet sidewall being substantially tangentially attached to the swirler housing. 21. An augmenter according to claim 16 further comprising the swirler cup having a tilted or chamfered edge. 22. An augmenter according to claim 1 further comprising a means for injecting fuel into the exhaust flowpath for combustion in a combustion zone downstream of the fuel/air swirler. 23. An augmenter according to claim 22 further comprising a plurality of circumferentially spaced apart radial flameholders extending radially across the combustion zone downstream of the fuel/air swirler. 24. An augmenter according to claim 23 further comprising a step ring flameholder located in a radially outer portion of the combustion zone downstream of the radial flameholders and including an aft-facing annular radial wall attached to an axial wall. 25. An augmenter according to claim 24 further comprising the means for injecting fuel including a plurality of first fuel spraybars. 26. An augmenter according to claim 25 further comprising each of the first fuel spraybars disposed within a corresponding one of the radial flameholders. 27. A turbofan gas turbine engine augmenter comprising: a mixer disposed between an axially extending bypass flowpath and an axially extending exhaust flowpath and including a plurality of tubular injector chutes extending radially inwardly from the bypass flowpath to the exhaust flowpath, circumferentially spaced apart radial flameholders extending radially inwardly into the exhaust flowpath downstream of the injector chutes, a fuel/air swirler disposed upstream of radial flameholders between the bypass flowpath and the exhaust flowpath, the fuel/air swirler including a swirler inlet axially open to and positioned substantially normal to the bypass flowpath, the fuel/air swirler including a swirler outlet open to and positioned substantially parallel to the exhaust flowpath, a swirl chamber within the fuel/air swirler operably disposed between the swirler inlet and the swirler outlet, and a swirl axis of the fuel/air swirler extending through the swirler outlet and substantially normal to the exhaust flowpath. 28. An augmenter according to claim 27 further comprising: the mixer having an annular mixer wall disposed between the axially extending bypass flowpath and the axially extending exhaust flowpath, the tubular injector chutes being attached to the mixer wall and extending radially inwardly into the exhaust flowpath, and the fuel/air swirler being mounted to the mixer wall and circumferentially located between a pair of the tubular injector chutes. 29. An augmenter according to claim 28 further comprising an air swirler centered about the swirl axis within the fuel/air swirler. 30. An augmenter according to claim 29 further comprising the air swirler being a louvered swirler. 31. An augmenter according to claim 29 further comprising the swirler inlet being radially offset with respect to the swirl axis. 32. An augmenter according to claim 31 further comprising: the fuel/air swirler having an air scoop leading from the swirler inlet to a rounded swirler housing of the fuel/air swirler, the air swirler being disposed within the rounded swirler housing, the air scoop having a swirler inlet sidewall extending from the swirler inlet to the swirler housing, and the swirler inlet sidewall being substantially tangentially attached to the swirler housing. 33. An augmenter according to claim 27 further comprising a means for injecting fuel into the exhaust flowpath for combustion in a combustion zone downstream of the fuel/air swirler. 34. An augmenter according to claim 33 further comprising a plurality of circumferentially spaced apart radial flameholders extending radially across the combustion zone downstream of the fuel/air swirler. 35. An augmenter according to claim 34 further comprising a step ring flameholder located in a radially outer portion of the combustion zone downstream of the radial flameholders and including an aft-facing annular radial wall attached to an axial wall. 36. An augmenter according to claim 35 further comprising the means for injecting fuel including a plurality of first fuel spraybars. 37. An augmenter according to claim 36 further comprising each of the first fuel spraybars disposed within a corresponding one of the radial flameholders. 38. An augmenter according to claim 28 further comprising: the air swirler including a swirler cup, a swirler housing surrounding the swirler cup, the swirler inlet leading into the swirler housing and the swirler outlet leading out from the swirler housing, and a fuel injector disposed through the swirler housing and operably positioned to inject fuel into the swirl chamber. 39. An augmenter according to claim 30 further comprising the swirler cup having a tilted or chamfered edge. 40. An augmenter according to claim 39 further comprising the mixer wall having a rounded lip aft of and at least in the vicinity of the swirler cup. 41. An augmenter according to claim 40 further comprising the swirler cup being louvered or having swirling vanes and centered about the swirl axis within the swirl chamber.

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Augmenter swirler pilot

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Augmenter swirler pilot

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이 특허에 인용된 특허 (27)

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IPC 상위 출원인

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