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公开(公告)号：US11459909B2
公开(公告)日：2022-10-04
申请号：US17021547
申请日：2020-09-15
Applicant: PRATT & WHITNEY CANADA CORP.
Inventor： Laslo Diosady , Daniel Alecu
Abstract: The heat exchanger includes an inner casing extending circumferentially around the central axis and securable to the shaft for concurrent rotation therewith, and an outer casing extending circumferentially around the central axis and secured to the inner casing, the outer casing located radially outwardly of the inner casing relative to the central axis. First conduits are secured to the outer casing and to the inner casing for rotation about the central axis, the first conduits located radially between the outer casing and the inner casing, and circumferentially distributed about the central axis. First passages are defined in the first conduits. Second passages are circumferentially interspaced between the first passages and are located radially between the inner casing and the outer casing. The second passages are in heat exchange relationship with the first passages.
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公开(公告)号：US11156093B2
公开(公告)日：2021-10-26
申请号：US16797066
申请日：2020-02-21
Applicant: PRATT & WHITNEY CANADA CORP.
Inventor： Ivan Sidorovich Paradiso , Daniel Alecu
Abstract: A fan assembly for a gas turbine engine is described which includes a fan and a leading edge assembly mounted to the fan. The leading edge assembly includes a plurality of leading edge extensions projecting from a central core and circumferentially spaced apart to align with leading edges of the fan blades. The leading edge extensions define cavities between the leading edges and the extensions. The cavities extend radially at least partially within the leading edge extensions, and receive heated pressurized air from the engine in operation. Elongated slots extend radially along a downstream edge of the leading edge extensions, and are defined axially between the downstream edge and the leading edges of the blades. The slots provide fluid flow communication between the cavities and at least pressure surfaces of the fan blades.
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公开(公告)号：US11098646B2
公开(公告)日：2021-08-24
申请号：US16504803
申请日：2019-07-08
Applicant: PRATT & WHITNEY CANADA CORP.
Inventor： Enzo Macchia , Daniel Alecu , Sean Downard , David Hill
IPC: F02C7/047
Abstract: A gas turbine engine is provided, with a compressor section including a fan driven by an engine shaft about a rotation axis, the engine shaft defining a bore extending axially therethrough from a hot gas inlet to a hot gas outlet, the hot gas inlet located downstream of the compressor section, a nose cone mounted to the fan and defining a cavity therewithin, a first impeller and a second impeller mounted within the cavity, the first impeller having an inlet facing a forward direction of the gas turbine engine, the inlet of the first impeller in fluid flow communication with an air inlet defined in an outer surface of the nose cone, the second impeller having an inlet facing a rearward direction of the gas turbine engine, the inlet of the second impeller being in fluid flow communication with the hot gas outlet of the engine shaft.
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公开(公告)号：US10550767B2
公开(公告)日：2020-02-04
申请号：US15188277
申请日：2016-06-21
Applicant: Pratt & Whitney Canada Corp.
Inventor： Andreas Eleftheriou , David Menheere , Daniel Alecu
Abstract: A method of installing a segment of a recuperator within an exhaust duct of a gas turbine engine, including positioning the segment such that its exhaust inlet is in fluid flow communication with the turbine section and its exhaust outlet is adapted to deliver an exhaust flow to atmosphere, engaging its air inlet to a plenum in fluid flow communication with the compressor discharge, and engaging its air outlet to another plenum containing the combustor. One of engaging the air inlet and engaging the air outlet includes forming a rigid connection providing sealed fluid flow communication with the corresponding plenum, and the other of engaging the air inlet and engaging the air outlet includes forming a floating connection providing sealed fluid flow communication with the corresponding plenum. The floating connection allows relative movement of the segment within the exhaust duct.
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公开(公告)号：US10253696B2
公开(公告)日：2019-04-09
申请号：US15258236
申请日：2016-09-07
Applicant: PRATT & WHITNEY CANADA CORP.
Inventor： Daniel Alecu , Richard Kostka
Abstract: An air-to-air cooler has a heat exchanger integrated to a housing. A first passage extends through the housing for directing a flow of cooling air through the heat exchanger. A second passage extends through the housing for directing a flow of hot air to be cooled through the heat exchanger. The first passage has a cooling air outlet tube disposed downstream of the heat exchanger. The cooling air outlet tube extends across the second passage between the heat exchanger and a hot air inlet of the second passage. The hot air inlet is disposed to cause incoming hot air to flow over the cooling air outlet tube upstream of the heat exchanger. An ejector drives the flow of cooling air through the first passage of the air-to-air cooler. A portion of the hot air flow may be used to drive the ejector.
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Patent Agency Ranking
公开(公告)号：US09938855B2
公开(公告)日：2018-04-10
申请号：US14169354
申请日：2014-01-31
Applicant: PRATT & WHITNEY CANADA CORP.
Inventor： Daniel Alecu , Andreas Eleftheriou
CPC classification number: F01D25/14 , F02C7/18 , F02K3/06 , F05D2260/601
Abstract: A turbine case cooling system and a method for supplying a cooling gas flow are provided. The cooling system has a turbine case and a turbine case cooling manifold. The cooling system also has a fluid or cooling conduit. The cooling conduit has an inlet in fluid communication with the bypass duct, and an outlet in fluid communication with the cooling manifold. The cooling conduit also has an ejector section which in use supplies a motive air flow radially into the cooling conduit to draw a bypass air flow from the bypass duct. The motive air flow mixes with the bypass air flow to form the cooling gas flow. The cooling conduit also has a diffuser section which in use conveys the cooling gas flow toward the outlet in a direction substantially perpendicular to the center axis of the gas turbine engine.
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公开(公告)号：US20140231062A1
公开(公告)日：2014-08-21
申请号：US13772677
申请日：2013-02-21
Applicant: PRATT & WHITNEY CANADA CORP.
Inventor： Marc Jordan Adique , Kevin Ng , Daniel Alecu
IPC: F28F27/02
CPC classification number: F01D25/125 , F01M5/007 , F01P2007/168 , F02C7/14 , F02C7/185 , F28F27/02 , F28F2250/06 , F28F2265/02 , G05D23/022
Abstract: The liquid cooling system has a heat exchanger having a fluid inlet and an outlet; a fluid supply conduit leading to the inlet of the heat exchanger; a fluid return conduit extending from the outlet of the heat exchanger; a bypass conduit extending between the fluid supply conduit and the fluid return conduit; a thermal valve configured for selectively closing the bypass conduit, the valve having a temperature sensing element positioned downstream of both the heat exchanger and the bypass conduit, the temperature sensing element configured to selectively move the thermal valve in response to a temperature change of the liquid which the temperature sensing element is exposed to relative to a temperature threshold of the valve; and a deflector positioned between the temperature sensing element and at least one of the bypass conduit and the heat exchanger outlet.
Abstract translation: 液体冷却系统具有具有流体入口和出口的热交换器; 通向热交换器入口的流体供应导管; 从所述热交换器的出口延伸的流体返回管道; 在流体供应管道和流体返回管道之间延伸的旁路管道; 配置用于选择性地关闭所述旁路导管的热阀，所述阀具有定位在所述热交换器和所述旁路导管两端的下游的温度感测元件，所述温度感测元件构造成响应于所述液体的温度变化选择性地移动所述热阀 所述温度感测元件相对于所述阀的温度阈值暴露; 以及定位在所述温度感测元件与所述旁路管道和所述热交换器出口中的至少一个之间的偏转器。
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公开(公告)号：US20250052418A1
公开(公告)日：2025-02-13
申请号：US18233159
申请日：2023-08-11
Applicant: Pratt & Whitney Canada Corp.
Inventor： Daniel Alecu , Laslo T. Diosady
Abstract: An assembly for a gas turbine engine includes at least one burner and a hydrogen manifold. The at least one burner includes an outer nozzle and an inner nozzle. The outer nozzle forms a combustion chamber. The outer nozzle includes an outer converging axial portion and an outer diverging axial portion. The outer converging axial portion is disposed at an upstream axial end of the outer nozzle. The outer diverging axial portion is disposed axially downstream of the outer converging axial portion. The inner nozzle includes an inner converging axial portion at a downstream axial end of the inner nozzle. The inner converging axial portion is disposed within the outer converging axial portion to form an annular gap between the outer converging axial portion and the inner converging axial portion. The hydrogen manifold is disposed at the upstream axial end. The hydrogen manifold is connected in fluid communication with the annular gap.
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公开(公告)号：US11965463B2
公开(公告)日：2024-04-23
申请号：US17176643
申请日：2021-02-16
Applicant: PRATT & WHITNEY CANADA CORP.
Inventor： Ivan Sidorovich Paradiso , Daniel Alecu
CPC classification number: F02C7/18 , F02C7/14 , F05D2260/213 , F05D2260/232 , F05D2260/31 , F05D2260/606 , F05D2260/98
Abstract: A fluid cooler for installation in a bypass duct of a turbofan gas turbine engine and associated methods are provided. The fluid cooler includes an inlet duct, a heat exchanger and an outlet duct. The inlet duct includes an inlet protruding into the bypass duct to receive a portion of the bypass air into the inlet duct. The heat exchanger is in fluid communication with the inlet duct. The heat exchanger facilitates heat transfer between a fluid and the portion of bypass air received into the inlet duct. The heat exchanger defines a general flow direction for the portion of bypass air that is different from the main flow direction of bypass air inside the bypass duct. The outlet duct conveys the portion of bypass air from the heat exchanger back to the bypass duct.
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公开(公告)号：US11572837B2
公开(公告)日：2023-02-07
申请号：US17155500
申请日：2021-01-22
Applicant: PRATT & WHITNEY CANADA CORP.
Inventor： Daniel Alecu , David Menheere
IPC: F02C7/28 , F01D9/06 , F01D25/12 , F01D25/18 , F02C6/08 , F02C7/18 , F02C3/04 , F02C7/06 , F02C9/16
Abstract: Systems and methods for delivering a buffer fluid to a shaft seal of a gas turbine engine are provided. An exemplary system includes, a buffer fluid source, one or more first conduits providing fluid communication between the buffer fluid source and the shaft seal along a first route, and one or more second conduits providing fluid communication between the buffer fluid source and the shaft seal along a second route different from the first route. A heat exchanger is also disposed along the first route to facilitate heat transfer between buffer fluid in the one or more first conduits and a cooling fluid.
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