公开(公告)号：US20170276441A1

公开(公告)日：2017-09-28

申请号：US15079773

申请日：2016-03-24

Applicant: Hamilton Sundstrand Corporation

Inventor： Andrzej E. Kuczek ,  Ram Ranjan ,  Brian St. Rock ,  Michael K. Ikeda

IPC: F28F13/06 ,  B23P15/26 ,  F28D7/16

CPC classification number: F28F13/06 ,  B23P15/26 ,  F28D7/16 ,  F28D7/1653 ,  F28D7/1684 ,  F28F7/02 ,  F28F2250/04

Abstract: A heat exchanger includes a body, a plurality of first flow channels defined in the body, and a plurality of second flow channels defined in the body. The second flow channels are fluidly isolated from the first flow channels. At least two of the second flow channels are adjacent each other and are separated from each other by at least one common fin, wherein the at least one common fin includes an opening defined therein for permitting flow between the adjacent second flow channels.

公开(公告)号：US20170205146A1

公开(公告)日：2017-07-20

申请号：US14995957

申请日：2016-01-14

Applicant: Hamilton Sundstrand Corporation

Inventor： Joseph Turney ,  Ram Ranjan ,  Thomas M. Yun ,  Matthew R. Pearson

IPC: F28D7/02 ,  F28F1/02 ,  B23P15/26 ,  F28F1/04

Abstract: A heat exchanger includes a heat exchanger body having a first end and a second end opposed to the first end along a flow axis. A plurality of flow channels is defined in the heat exchanger body extending axially with respect to the flow axis. A first set of the flow channels forms a first flow circuit and a second set of the flow channels forms a second flow circuit that is in fluid isolation from the first flow circuit. Each flow channel is fluidly isolated from the other flow channels. The flow channels all conform to a curvilinear profile.

公开(公告)号：US20250155172A1

公开(公告)日：2025-05-15

申请号：US18506768

申请日：2023-11-10

Applicant: Hamilton Sundstrand Corporation

Inventor： Raphael Mandel ,  Ram Ranjan

IPC: F25B43/02 ,  F25B1/04

Abstract: A cooling system includes a liquid loop, a vapor compression loop, and a heat exchanger in fluid communication with each of the liquid loop and the vapor compression cycle loop. The liquid loop includes a cold sink for cooling a heat load. The vapor compression cycle loop is fluidly coupled to the liquid loop by a separator, which is configured to separate a two-phase form of a working fluid received from the cold sink into a vapor form of the working fluid and a liquid form of the working fluid.

公开(公告)号：US12063763B2

公开(公告)日：2024-08-13

申请号：US17474802

申请日：2021-09-14

Applicant: Hamilton Sundstrand Corporation

Inventor： Jeffrey Ewanchuk ,  Kimberly Rae Saviers ,  Ram Ranjan ,  Ross Wilcoxon ,  Haley Steffen

IPC: H05K7/20 ,  H01L23/427 ,  H01L23/473

CPC classification number: H05K7/20936 ,  H05K7/209 ,  H01L23/427 ,  H01L23/473 ,  H05K7/20254 ,  H05K7/20336 ,  H05K7/20927

Abstract: A system for cooling a power component includes a first metal layer. A cooling layer having a first surface is in contact with a surface of the first metal layer. A second metal layer is included having a surface in contact with a second surface of the cooling layer opposite the first metal layer. The cooling layer is of a material different from that of the first metal layer and that of the second metal layer. A plurality of cooling features are embedded in the material of the cooling layer. The cooling channels are spaced apart from both the first metal layer and the second metal layer by the material of the cooling layer. An electrically conductive path connects the first metal plate to the second metal plate.

公开(公告)号：US20240183359A1

公开(公告)日：2024-06-06

申请号：US18075159

申请日：2022-12-05

Applicant: Hamilton Sundstrand Corporation

Inventor： Zhongtao Dai ,  Ram Ranjan ,  Kathryn L. Kirsch

IPC: F04D25/08 ,  F04D29/32 ,  F04D29/58

CPC classification number: F04D25/082 ,  F04D29/321 ,  F04D29/5806

Abstract: A ram air fan inlet assembly for cabin air compressor (CAC) motor cooling flow enhancement includes a gas path defined by a ram air duct and a fan section, a CAC motor cooling return duct having an outlet provided through a wall of the ram air duct, and a centerbody body disposed in the ram air duct. The fan section is disposed immediately downstream and abutting the ram air duct. The ram air duct and fan section share a common axis. The centerbody is disposed about the common axis and configured to reduce of volume of the gas flow path in the ram air duct. The centerbody and the outlet axially overlap.

公开(公告)号：US11876405B2

公开(公告)日：2024-01-16

申请号：US16742688

申请日：2020-01-14

Applicant: HAMILTON SUNDSTRAND CORPORATION

Inventor： Kimberly Rae Saviers ,  Ram Ranjan ,  Jagadeesh Kumar Tangudu

IPC: H02K1/20 ,  H02K1/14 ,  H02K15/02 ,  H02K9/19 ,  H02K9/197 ,  H02K3/24

CPC classification number: H02K1/20 ,  H02K1/146 ,  H02K3/24 ,  H02K9/19 ,  H02K9/197 ,  H02K15/022

Abstract: A stator of an electric motor includes a stator core including a rim and a plurality of stator teeth extending from the rim. The plurality of stator teeth define a plurality of tooth gaps between circumferentially adjacent stator teeth. A plurality of stator windings are wrapped along the plurality of stator teeth. The plurality of stator windings include a plurality of core segments extending along the plurality of tooth gaps, and a plurality of end turn segments connecting adjacent core segments. A plurality of non-electrically conductive cooling channels are located in the stator core. The plurality of cooling channels are configured to direct a cooling fluid flow therethrough to cool the plurality of stator windings.

公开(公告)号：US20230349296A1

公开(公告)日：2023-11-02

申请号：US18200220

申请日：2023-05-22

Applicant: Hamilton Sundstrand Corporation

Inventor： Zhongtao Dai ,  Ram Ranjan ,  Robert H. Dold

IPC: F01D5/04 ,  B33Y80/00

CPC classification number: F01D5/046 ,  F01D5/048 ,  B33Y80/00 ,  F05D2240/24 ,  F05D2260/201

Abstract: A turbine rotor includes a base and a plurality of blades. A central nose is radially inward of the blades and defines an axis of rotation. A plurality of cooling manifolds is disposed within the turbine rotor and includes impingement cooling jets extending through a rear surface of the turbine rotor. An internal cooling manifold extends radially inward of the impingement cooling jets and extends between the base and the rear surface of the turbine rotor. A central nose cooling manifold extends into the central nose and is fluidically connected to the internal cooling manifold. A base cooling manifold is fluidically connected to the central nose manifold and extends radially outward from the central nose cooling manifold. A blade cooling manifold is fluidically connected to the base cooling manifold and extends within the blade. Trailing edge jets extend from the blade cooling manifold and through the trailing edge of blades.

公开(公告)号：US11731780B2

公开(公告)日：2023-08-22

申请号：US17470200

申请日：2021-09-09

Applicant: Hamilton Sundstrand Corporation

Inventor： Ram Ranjan

IPC: F02C6/08 ,  F02C7/141 ,  B64D41/00 ,  B64D13/06 ,  F02C7/224 ,  F02C7/32

CPC classification number: B64D41/00 ,  B64D13/06 ,  F02C6/08 ,  F02C7/141 ,  F02C7/224 ,  F02C7/32 ,  B64D2013/0611

Abstract: An aircraft system includes a turbine engine having a compressor, a combustor having an inlet and an outlet, and a turbine having an inlet portion and an outlet portion. An auxiliary power unit (APU) is operatively connected to the turbine engine. The APU includes a compressor portion, a generator, and a turbine portion. The compressor portion is operatively connected to the turbine portion through the generator. A source of cryogenic fluid is operatively connected to the turbine engine and the APU. A heat exchange member includes an inlet section operatively connected to the source of cryogenic fluid, a first outlet section operatively connected to the turbine engine and a second outlet section operatively connected to the compressor portion.

公开(公告)号：US20230083470A1

公开(公告)日：2023-03-16

申请号：US17471312

申请日：2021-09-10

Applicant: Hamilton Sundstrand Corporation

Inventor： Ram Ranjan ,  Matthew Robert Pearson ,  Joseph Turney

IPC: B64D13/08 ,  B64D37/34

Abstract: Aircraft systems including a fuel tank containing a cryogenic fuel, an engine configured to consume the fuel, and an ECS having a precooler arranged to receive the fuel and air from the engine. The precooler includes a first heat exchanger configured to receive a first state of the fuel and output a second state of the fuel and a second heat exchanger configured to receive the second state fuel and output a third state fuel. The first state has a first density, the second state has a second density, and the third state has a third density, wherein the first density is greater than the second density, and the second density is greater than the third density. The engine air is directed through the second heat exchanger first and then through the first heat exchanger.

公开(公告)号：US11415378B2

公开(公告)日：2022-08-16

申请号：US17076222

申请日：2020-10-21

Applicant: Hamilton Sundstrand Corporation

Inventor： Ram Ranjan ,  Brian St. Rock

IPC: F28F9/22 ,  B23P15/26 ,  F28F9/02

Abstract: A header duct and method of forming a header duct includes an inlet portion having a planar inlet, an outlet portion have a plurality of planar outlets, and a transition portion extending continuously from the inlet portion to the outlet portion. The transition portion has a bend and internal topography defining a non-monotonic cross-sectional area distribution between the inlet and outlet portions. The transition portion can further include a bulbous region extending in a lateral direction of the duct and a protrusion located along an inside radius of the bend.