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公开(公告)号：US20220178542A1
公开(公告)日：2022-06-09
申请号：US17380264
申请日：2021-07-20
Applicant: ROLLS-ROYCE PLC , ROLLS-ROYCE DEUTSCHLAND LTD & CO KG
Inventor： Luca TENTORIO , Imon-Kalyan BAGCHI
Abstract: A lean burn combustor includes a plurality of lean burn fuel injectors, each including a fuel feed arm and a lean burn fuel injector head with a lean burn fuel injector head tip, wherein the lean burn fuel injector head tip has a lean burn fuel injector head tip diameter, the lean burn fuel injector head including a pilot fuel injector and a main fuel injector, the main fuel injector being arranged coaxially and radially outwards of the pilot fuel injector; and a combustor chamber extending along an axial direction for a length and including a radially inner annular wall, a radially outer annular wall, and a meter panel defining the size and shape of the combustor chamber, wherein the combustor chamber includes primary and secondary combustion zones. A ratio of the combustor chamber length to the lean burn fuel injector head tip diameter is less than 5.
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公开(公告)号：US20190316776A1
公开(公告)日：2019-10-17
申请号：US16364258
申请日：2019-03-26
Applicant: ROLLS-ROYCE plc
Inventor： Luca TENTORIO
Abstract: There is disclosed a fuel injector arrangement for a gas turbine engine, the fuel injector arrangement comprising: a fuel spray nozzle comprising an engaging feature; and a burner sleeve comprising a swirler; wherein the burner sleeve comprises a connecting feature. The engaging and connecting features are engageable so as to removably couple the fuel spray nozzle to the burner sleeve and inhibit relative movement between the fuel spray nozzle and the swirler. A method of assembly of a fuel injector arrangement is also disclosed. The method comprises providing a fuel spray nozzle comprising an engaging feature; and providing a burner sleeve comprising a swirler; wherein the burner sleeve comprises a connecting feature. The method further comprises bringing the engaging and connecting features into engagement so as to removably couple the fuel spray nozzle to the burner sleeve and inhibit relative movement between the fuel spray nozzle and the swirler.
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公开(公告)号：US20160169178A1
公开(公告)日：2016-06-16
申请号：US14534605
申请日：2014-11-06
Applicant: ROLLS-ROYCE PLC
Inventor： Luca TENTORIO
CPC classification number: F02M61/14 , F02C7/22 , F02M57/04 , F02M61/162 , F23D11/383 , F23R3/14 , F23R3/283 , F23R3/60 , F23R2900/00017 , Y02T50/675
Abstract: A combustion chamber includes an upstream end wall having an aperture and a fuel injector. An air swirler is mounted such that the air swirler is movable radially with respect to the aperture. An inner wall of the air swirler has a first portion. A fuel injector head of the fuel injector is arranged coaxially within the air swirler. An outer wall of the fuel injector head has a first portion. The inner diameter of the first portion of the air swirler is less than the outer diameter of the first portion of the fuel injector head. One of the first portions is elastically radially deformable to allow the fuel injector head to be installed and removed from the air swirler. The inner wall and the outer wall have inter-engaging radially and axially extending faces to align the fuel injector head axially and radially within the air swirler.
Abstract translation: 燃烧室包括具有孔的上游端壁和燃料喷射器。 安装空气旋流器，使得空气旋流器相对于孔径向移动。 空气旋流器的内壁具有第一部分。 燃料喷射器的燃料喷射器头同轴地布置在空气旋流器内。 燃料喷射头的外壁具有第一部分。 空气旋流器的第一部分的内径小于燃料喷射头的第一部分的外径。 第一部分之一是弹性地径向变形以允许燃料喷射头安装并从空气旋流器移除。 内壁和外壁具有相互接合的径向和轴向延伸的面，以使燃料喷射头在空气旋流器内轴向和径向对准。
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公开(公告)号：US20220178543A1
公开(公告)日：2022-06-09
申请号：US17550630
申请日：2021-12-14
Applicant: ROLLS-ROYCE plc , ROLLS-ROYCE DEUTSCHLAND LTD & CO KG
Inventor： Luca TENTORIO , Imon-Kalyan BAGCHI
Abstract: A lean burn combustor includes a plurality of lean burn fuel injectors, each including a fuel feed arm and a lean burn fuel injector head with a lean burn fuel injector head tip, wherein the lean burn fuel injector head tip has a lean burn fuel injector head tip diameter, the lean burn fuel injector head including a pilot fuel injector and a main fuel injector, the main fuel injector being arranged coaxially and radially outwards of the pilot fuel injector; and a combustor chamber extending along an axial direction for a length and including a radially inner annular wall, a radially outer annular wall, and a meter panel defining the size and shape of the combustor chamber, wherein the combustor chamber includes primary and secondary combustion zones. A ratio of the combustor chamber length to the lean burn fuel injector head tip diameter is less than 5.
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公开(公告)号：US20220178541A1
公开(公告)日：2022-06-09
申请号：US17367952
申请日：2021-07-06
Applicant: ROLLS-ROYCE PLC , ROLLS-ROYCE DEUTSCHLAND LTD & CO KG
Inventor： Luca TENTORIO , Imon-Kalyan BAGCHI
Abstract: A lean burn combustor includes a plurality of lean burn fuel injectors, each including a fuel feed arm and a lean burn fuel injector head with a lean burn fuel injector head tip, wherein the tip has a lean burn fuel injector head tip diameter, the lean burn fuel injector head including a pilot fuel injector and a main fuel injector, the main fuel injector being arranged coaxially and radially outwards of the pilot fuel injector; and a combustor chamber extending along an axial direction and including a radially inner annular wall, a radially outer annular wall, and a meter panel defining the size and shape of the combustor chamber, which includes a primary combustion zone with a primary combustion zone depth and a secondary combustion zone. A ratio of the primary combustion zone depth to the lean burn fuel injector head tip diameter is less than 2.4.
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Patent Agency Ranking
公开(公告)号：US20190170355A1
公开(公告)日：2019-06-06
申请号：US16188352
申请日：2018-11-13
Applicant: ROLLS-ROYCE plc
Inventor： Luca TENTORIO , Hua Wei HUANG , Carl MULDAL , Juan Carlos ROMAN CASADO
Abstract: A lean burn fuel injector comprises a fuel feed arm and a fuel injector head. The fuel feed arm has a single pilot fuel supply passage and a single main fuel supply passage extending there-through. The fuel injector head has a coaxial arrangement of an inner pilot air-blast fuel injector and a coaxially arranged outer main air-blast fuel injector. The inner pilot air-blast fuel injector comprises a coaxial arrangement of a pilot inner air swirler passage and a pilot outer air swirler passage. The outer main air-blast fuel injector comprises a coaxial arrangement of a main inner air swirler passage and a main outer air swirler passage. The single main fuel supply passage is arranged to supply main fuel to the main inner air swirler passage. The single pilot fuel supply passage is arranged to supply pilot fuel onto the pre-filming surfaces in the pilot inner and outer air swirler passages.
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公开(公告)号：US20170205069A1
公开(公告)日：2017-07-20
申请号：US15387407
申请日：2016-12-21
Applicant: ROLLS-ROYCE plc
Inventor： Luca TENTORIO , Hua Wei HUANG , Carl L MULDAL
Abstract: A combustion chamber arrangement including an outer annular wall and an inner annular wall spaced from the outer annular wall. The inner annular wall includes a plurality of tiles. At least one of the tiles is secured to the outer annular wall by at least one stud and a cooperating nut. Each stud includes a head and a threaded portion extending from the head. The threaded portions extend through an aperture in the tile and an aperture in the outer annular wall. The head includes a plurality of spacers to space the head from an inner surface of the tile. An associated washer either has an aperture extending radially there-through or a slot extending radially along one of the surfaces of the washer to supply coolant over the stud or the space between the inner annular wall and the outer annular wall is arranged to supply coolant over the stud.
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公开(公告)号：US20220316709A1
公开(公告)日：2022-10-06
申请号：US17848798
申请日：2022-06-24
Applicant: ROLLS-ROYCE plc , ROLLS-ROYCE DEUTSCHLAND LTD & CO KG
Inventor： Luca TENTORIO , Imon-Kalyan BAGCHI
Abstract: A lean burn combustor includes a plurality of lean burn fuel injectors, each including a fuel feed arm and a lean burn fuel injector head with a lean burn fuel injector head tip, wherein the lean burn fuel injector head tip has a lean burn fuel injector head tip diameter, the lean burn fuel injector head including a pilot fuel injector and a main fuel injector, the main fuel injector being arranged coaxially and radially outwards of the pilot fuel injector; and a combustor chamber extending along an axial direction for a length and including a radially inner annular wall, a radially outer annular wall, and a meter panel defining the size and shape of the combustor chamber, wherein the combustor chamber includes primary and secondary combustion zones. A ratio of the combustor chamber length to the lean burn fuel injector head tip diameter is less than 5.
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公开(公告)号：US20200378603A1
公开(公告)日：2020-12-03
申请号：US16878927
申请日：2020-05-20
Applicant: ROLLS-ROYCE plc
Inventor： Luca TENTORIO , Juan Carlos ROMAN CASADO , Giacomo DI CHIARO , Jonathan KNAPTON , Filippo ZAMBON , Radu IRIMIA
Abstract: A fuel spray nozzle arrangement for a combustor, the fuel spray nozzle arrangement comprising a fuel spray nozzle connected to a feed arm, wherein the feed arm comprises an aerofoil.
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公开(公告)号：US20200025386A1
公开(公告)日：2020-01-23
申请号：US16276669
申请日：2019-02-15
Applicant: ROLLS-ROYCE plc
Inventor： Carl L. MULDAL , Luca TENTORIO , Hua Wei HUANG , Juan Carlos ROMAN CASADO
Abstract: A lean burn fuel injector has a head which has a coaxial arrangement of an inner pilot air-blast fuel injector and an outer main air-blast fuel injector. The pilot fuel injector comprises coaxially arranged inner and outer air swirler passages. The main fuel injector comprises coaxially arranged inner and outer air swirler passages. A first splitter is arranged between the passages. The first splitter has a conical divergent downstream portion. A second splitter is arranged radially within and spaced from the first splitter. The second splitter has a conical convergent portion and a conical divergent downstream portion. The downstream end of the second splitter is upstream of the downstream end of the first splitter. A connecting member connects the downstream end of the second splitter and the downstream portion of the first splitter upstream of the downstream end of the first splitter to form a sharp edge.
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