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    Aerofoil shaping method
    61.
    发明授权
    Aerofoil shaping method 有权

    公开(公告)号：US12098651B2

    公开(公告)日：2024-09-24

    申请号：US17847699

    申请日：2022-06-23

    Applicant: ROLLS-ROYCE plc

    Inventor： Shahrokh Shahpar

    IPC: F01D5/14

    CPC classification number: F01D5/145 ,  F05D2230/10 ,  F05D2240/305 ,  F05D2240/306

    Abstract: A method for shaping an aerofoil by: (a) defining an aerofoil having a nominal shape, the nominal shape defined by; a leading edge, a trailing edge, a root and a tip, a span extending from the root to the tip, a pressure surface and a suction surface extending from the leading edge to the trailing edge; a nominal camber line extending from the leading edge to the trailing edge; (b) defining an edge region on one of the pressure and/or suction surface which extends distance of at least 0.1% but no more than 10% of the camber line length from one of the leading edge or the trailing edge of the aerofoil; and (c) adapting the shape of the pressure and/or suction surface within the edge region such that the edge region of the aerofoil achieves an asymmetric profile with respect to the nominal camber line.

    ROTOR DISK, TURBINE BLADE, AND TURBINE BLADE ASSEMBLY EQUIPPED WITH THESE
    62.
    发明公开
    ROTOR DISK, TURBINE BLADE, AND TURBINE BLADE ASSEMBLY EQUIPPED WITH THESE 审中-公开

    公开(公告)号：US20240309762A1

    公开(公告)日：2024-09-19

    申请号：US18600026

    申请日：2024-03-08

    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.

    Inventor： Sho Bonkohara ,  Masamitsu OKUZONO

    IPC: F01D5/14 ,  F01D5/30

    CPC classification number: F01D5/143 ,  F01D5/145 ,  F01D5/3007 ,  F05D2240/305 ,  F05D2240/306 ,  F05D2240/307

    Abstract: A rotor disk includes a blade root groove into which a blade root of a turbine blade is insertable. The blade root groove includes a first bearing surface, a first disk neck outer curved surface which gradually moves toward a first circumferential side as it goes from an edge on an inner radial side of the first bearing surface toward the inner radial side, and a first disk neck inner curved surface which gradually moves toward a second circumferential side as it goes from a first disk neck position corresponding to an edge on the inner radial side of the first disk neck outer curved surface toward the inner radial side. The first disk neck outer curved surface includes a first curvature changing surface of which a curvature gradually increases from the first disk neck position toward an outer radial side.

    Ceiling fan
    66.
    发明授权
    Ceiling fan 有权

    公开(公告)号：US11873818B2

    公开(公告)日：2024-01-16

    申请号：US17472785

    申请日：2021-09-13

    Applicant: LG ELECTRONICS INC.

    Inventor： Seungdeok Yang ,  Jaehyuk Jung ,  Seokho Choi

    IPC: F04D29/38 ,  F04D25/08

    CPC classification number: F04D25/088 ,  F04D29/384 ,  F05D2240/301 ,  F05D2240/305 ,  F05D2240/307 ,  F05D2250/38

    Abstract: A ceiling fan may include a column; a hub case coupled to the column and rotatable with respect to the column; and a plurality of blades disposed at the hub case, and arranged radially around the column. Each blade may include a lower blade having a first side coupled to the hub case and a second side, opposite to the first side, directed radially outwardly; an upper blade spaced apart from the lower blade, and having a first side coupled to the hub case and a second side, opposite to the first side, directed radially outwardly; and an air gap disposed between the lower blade and the upper blade. The blade may be formed as a tandem blade, thereby generating a greater lift force than a blade having one positive pressure surface and one negative pressure surface, such that an air volume may increase at a same power output.

    AIRFOIL SHAPE FOR A COMPRESSOR
    69.
    发明申请
    AIRFOIL SHAPE FOR A COMPRESSOR 审中-公开

    公开(公告)号：US20190063228A1

    公开(公告)日：2019-02-28

    申请号：US16107185

    申请日：2018-08-21

    Applicant: General Electric Comapny

    Inventor： Vasantharuban S ,  Prem Navin DHAYANANDAM ,  Lakshmanan VALLIAPPAN

    IPC: F01D5/14

    CPC classification number: F01D5/141 ,  F01D9/041 ,  F05D2240/12 ,  F05D2240/301 ,  F05D2240/305 ,  F05D2240/306 ,  F05D2250/74

    Abstract: An article of manufacture having a nominal airfoil profile substantially in accordance with Cartesian coordinate values of X, Y, and Z set forth in a scalable table identified as TABLE 1, wherein the Cartesian coordinate values of X, Y, and Z are non-dimensional values convertible to dimensional distances by multiplying the Cartesian coordinate values of X, Y, and Z by a number, and wherein X and Y are coordinates which, when connected by continuing arcs, define airfoil profile sections at each Z height, the airfoil profile sections at each Z height being joined with one another to form a complete airfoil shape. The resulting article may be used as a stator vane in a compressor.

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