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    Compressor casing with slots and grooves
    2.
    发明授权
    Compressor casing with slots and grooves 有权

    公开(公告)号：US12071959B1

    公开(公告)日：2024-08-27

    申请号：US18461705

    申请日：2023-09-06

    申请人： PRATT & WHITNEY CANADA CORP.

    发明人： Hien Duong ,  Christopher Chiang

    IPC分类号： F04D29/52 ,  F04D29/32 ,  F02C3/06

    CPC分类号： F04D29/526 ,  F04D29/324 ,  F02C3/06 ,  F05D2220/323

    摘要： A compressor for an aircraft engine, has: a gaspath extending around a central axis between a radially-inner wall and a radially-outer wall; a rotor having blades circumferentially distributed around the central axis, the blades having airfoils extending from roots to tips along a span and extending from leading edges to trailing edges along a chord, the airfoils extending across the gaspath; grooves defined in an inner face of the radially-outer wall, circumferentially distributed around the central axis, and having groove lengths extending in a first direction having a circumferential component relative to the central axis, the grooves located between the leading edges and the trailing edges of the airfoils; and slots defined in the inner face of the radially-outer wall, circumferentially distributed around the central axis, and having slot lengths extending in a second direction having an axial component relative to the central axis, the slots projecting from the grooves.

    AXIAL FAN
    3.
    发明公开
    AXIAL FAN 审中-公开

    公开(公告)号：US20240271637A1

    公开(公告)日：2024-08-15

    申请号：US18493093

    申请日：2023-10-24

    申请人： KABUSHIKI KAISHA TOSHIBA ,  Toshiba Carrier Corporation

    发明人： Yuki FURUTANI

    IPC分类号： F04D29/52 ,  F04D19/00 ,  F04D29/54

    CPC分类号： F04D29/526 ,  F04D19/002 ,  F04D29/541

    摘要： An axial fan includes: an impeller including a rotating part, and a blade part connected to the rotating part; a bellmouth including a flat part orthogonal to an extension direction of a rotation axis of the rotating part; a rising part rising from the flat part; and an opening along which the rising part extends, the impeller being located in the opening, the rising part surrounding the impeller, the bellmouth including a plurality of grooves located at a surface of the bellmouth, the surface of the bellmouth being connected to an inner surface of the rising part, the inner surface of the rising part facing the blade part of the impeller, the plurality of grooves being located in at least a corner portion connecting the flat part and the rising part, the plurality of grooves extending in a direction crossing the flat part.

    Fan including magnetically levitated blade assembly
    6.
    发明授权
    Fan including magnetically levitated blade assembly 有权

    公开(公告)号：US11746793B2

    公开(公告)日：2023-09-05

    申请号：US17100952

    申请日：2020-11-23

    申请人： Yung Shun Chiu

    发明人： Yung Shun Chiu

    IPC分类号： F04D29/52 ,  F04D29/048 ,  F04D25/08 ,  F04D25/06 ,  F04D29/40

    CPC分类号： F04D25/0606 ,  F04D25/06 ,  F04D29/403 ,  F04D29/526 ,  F04D25/08 ,  F04D29/048

    摘要： A fan includes an annular frame, a rail assembly, a driving member and blades. The blades are connected to the driving member. The driving member is electromagnetically movable along the magnetic levitation assembly that extends along an edge of the annular frame. The driving member does not contact the annular frame or the magnetic levitation assembly so that when the fan is used, the magnetic levitation assembly is energized to generate an electromagnetic force between the magnetic levitation assembly and the driving member to move the driving member along the edge of the annular frame to drive the blades to rotate. Therefore, the blades can be rotated without having to use any motor behind the annular frame, thereby reducing the volume of the fan.

    FAN SHROUD AND/OR FAN BLADE ASSEMBLY
    10.
    发明申请
    FAN SHROUD AND/OR FAN BLADE ASSEMBLY 审中-公开

    公开(公告)号：US20180313363A1

    公开(公告)日：2018-11-01

    申请号：US15921460

    申请日：2018-03-14

    申请人： The BlowHard Company, LLC

    发明人： Michael Anthony Hadlock ,  Benjamin Hadlock

    IPC分类号： F04D29/52 ,  F04D29/16 ,  F04D19/00 ,  F04D29/32

    CPC分类号： F04D19/002 ,  F04D29/164 ,  F04D29/526 ,  F04D29/541 ,  F05D2250/51

    摘要： Briefly, embodiments of a fan for moving a volume of compressible fluid from an upstream side to a downstream side may comprise a vortex circulation channel formed within a shroud substantially surrounding the blades of the fan. As a portion of one or more blades of the fan moves within the vortex circulation channel, a vortex that is formed and confined within the channel may reduce formation of a vortex within the fan working area, thereby bringing about an increase in a volume of the compressible fluid capable of being moved by the fan. In an embodiment, a fin or other protrusion disposed on a tip portion of a blade may additionally increase flow of a compressible fluid through a fan. In an embodiment, use of a wraparound leading edge of a fan shroud may bring about further increases in volume of compressible fluid flow.