公开(公告)号：US20240026898A1

公开(公告)日：2024-01-25

申请号：US18344466

申请日：2023-06-29

Applicant: SANYO DENKI CO., LTD.

Inventor： Yoshihisa YAMAZAKI

IPC: F04D29/38 ,  F04D19/00

CPC classification number: F04D29/386 ,  F04D19/002

Abstract: Provided is an axial fan including multiple forward-swept blades. An angle of advance of a trailing edge of the forward-swept blade is larger than an angle of advance of a leading edge of the forward-swept blade. An outer portion of the trailing edge, being positioned further in an outer periphery of the trailing edge than an intermediate portion of the trailing edge with respect to a rotary shaft of the axial fan, advances as the trailing edge advances radially outward of a ventilation channel of the axial fan.

公开(公告)号：US11873835B2

公开(公告)日：2024-01-16

申请号：US17218157

申请日：2021-03-31

Applicant: Stokes Technology Development Ltd.

Inventor： Yih-Wei Tzeng

IPC: F04D29/38 ,  F04D29/32

CPC classification number: F04D29/386 ,  F04D29/329

Abstract: A manufacturing method of an axial air moving device. A model of the axial air moving device includes a hub and blades. The axial projection of blades is partially overlapped in the axial direction of the hub. The model of the axial air moving device is parted in the axis direction of the hub. The blades are divided into multiple parting models non-overlapped in the axial projection. A mold manufacture using axial demolding and an injection molding are performed and the parting models are connected. Therefore, the axial air moving device with overlapped blades and better fluid performance is achieved through the axial demolding method.

公开(公告)号：US20180231020A1

公开(公告)日：2018-08-16

申请号：US15894249

申请日：2018-02-12

Applicant: ROLLS-ROYCE plc

Inventor： Mark J. WILSON ,  Gabriel GONZALEZ-GUTIERREZ ,  Marco BARALE ,  Benedict PHELPS ,  Kashmir S. JOHAL ,  Nigel HS SMITH

IPC: F04D29/38 ,  F02K3/06

CPC classification number: F04D29/386 ,  F01D5/141 ,  F01D5/147 ,  F02K3/06 ,  F04D29/324 ,  F04D29/388 ,  F05D2220/32 ,  F05D2230/239 ,  F05D2240/303 ,  Y02T50/672 ,  Y02T50/673

Abstract: A fan blade for a gas turbine engine is arranged such that for any two points on its leading edge that are in the radially outer 40% of the blade span and are radially separated by at least 5% of the blade span, the radially outer of the two points is axially forward of the radially inner point. The radius of the leading edge of a given fan blade at the hub divided by the radius of the leading edge of the fan blade at the tip is less than or equal to 0.3. Such an arrangement may result in an improved operability range.

公开(公告)号：US09605686B2

公开(公告)日：2017-03-28

申请号：US14447977

申请日：2014-07-31

Applicant: Mitsubishi Electric Corporation

Inventor： Shingo Hamada ,  Seiji Nakashima ,  Takashi Ikeda ,  Takahide Tadokoro ,  Takuya Kodama ,  Takashi Kobayashi ,  Hiroshi Yoshikawa ,  Hiroaki Makino

IPC: F04D29/38 ,  F24F1/38 ,  F04D19/00 ,  F24F1/06

CPC classification number: F04D29/384 ,  F04D19/002 ,  F04D29/386 ,  F05D2240/303 ,  F05D2240/304 ,  F05D2240/307 ,  F24F1/06 ,  F24F1/38

Abstract: A leading edge of a blade has a first curved portion provided with a leading-edge rearmost point, and a trailing edge of the blade has a second curved portion located on the inner circumferential side of the trailing edge and a third curved portion located on the outer circumferential side of the blade on the trailing edge. The third curved portion has a trailing-edge foremost point, and the second curved portion has a trailing-edge rearmost point. The trailing edge and a first concentric circle, which is one of concentric circles having as their center an axis of rotation and passes through the leading-edge rearmost point, intersect each other at a first intersection. The first intersection is located between the trailing-edge rearmost point and the trailing-edge foremost point.

公开(公告)号：US08137070B2

公开(公告)日：2012-03-20

申请号：US13045351

申请日：2011-03-10

Applicant: Robert J. Van Houten

Inventor： Robert J. Van Houten

IPC: F04D29/38

CPC classification number: F04D29/386 ,  F04D29/164 ,  Y10S416/02 ,  Y10S416/05

Abstract: A free-tipped axial fan assembly has a skew distribution which reduces fan noise while minimizing radial tip deflection. The difference between the maximum value of leading-edge skew and the value of leading-edge skew at the fan radius is at least 10 degrees. The ratio of the difference of the leading-edge skew between the maximum value and the value at the fan radius to the difference of the trailing-edge skew between the maximum value and the value at the fan radius is at least 2.5.

Abstract translation: 自由倾斜的轴流风扇组件具有倾斜分布，其减小风扇噪声，同时使径向末端偏转最小化。 前缘歪斜的最大值与风扇半径前缘歪斜值之差至少为10度。 最大值与风扇半径值之间的前缘歪斜差与最大值与风扇半径值之间的后缘歪斜差之比至少为2.5。

公开(公告)号：US20080156282A1

公开(公告)日：2008-07-03

申请号：US11815577

申请日：2006-02-08

Applicant: Uwe Aschermann

Inventor： Uwe Aschermann

IPC: F01P7/10

CPC classification number: F04D29/386 ,  F05B2250/16

Abstract: The invention relates to an axial ventilator for the cooling device of an internal combustion engine, in particular for a motor vehicle, wherein said axial ventilator comprises a rotatably driven hub (2) provided with air blades (11-19) which are fixed thereto and radially inwardly limited by an internal diameter (Di) and radially outwardly limited by an external diameter (Da). In order to obtain a small-sized axial ventilator, the ratio between the internal (Di) and external (Da) diameters is greater than 40%.

Abstract translation: 本发明涉及一种用于内燃机，特别是用于机动车辆的冷却装置的轴向通风机，其中所述轴向通风机包括设置有固定在其上的空气叶片（11-19）的可旋转地驱动的轮毂（2） 径向向内受内径（Di）限制，径向向外由外径（Da）限制。 为了获得小尺寸的轴向通气机，内部（Di）和外部（Da）直径之间的比例大于40％。

公开(公告)号：US20070258822A1

公开(公告)日：2007-11-08

申请号：US10570169

申请日：2005-07-05

Applicant: Alessandro Spaggiari

Inventor： Alessandro Spaggiari

IPC: F01D5/14

CPC classification number: F04D29/386 ,  Y10S416/02

Abstract: An axial fan (1) rotating in a plane (XY) about an axis (2) comprises a central hub (3), a plurality of blades (4), which have a root (5) and a tip (6), the blades (4) being delimited by a convex leading edge (7) and by a concave trailing edge (8), their projections in the fan rotation plane each being formed by circular arc segments; the blades (4) are made from sections with aerodynamic profiles, each with decreasing length and more curved from the perimeter to the hub.

Abstract translation: 围绕轴线（2）在平面（XY）中旋转的轴流风扇（1）包括具有根部（5）和尖端（6）的中心毂（3），多个叶片（4） 叶片（4）由凸起的前缘（7）和凹的后缘（8）界定，其风扇旋转平面中的突起各自由圆弧段形成; 叶片（4）由具有空气动力学轮廓的部分制成，每个具有减小的长度并且从周边到轮毂更弯曲。

公开(公告)号：US07273354B2

公开(公告)日：2007-09-25

申请号：US10570805

申请日：2005-07-25

Applicant: Alessandro Spaggiari

Inventor： Alessandro Spaggiari

IPC: F04D29/38

CPC classification number: F04D29/384 ,  F04D29/325 ,  F04D29/386 ,  Y10S416/05

Abstract: Disclosed is an axial fan (1) rotating in a plane (XY) about an axis (2) having a central hub (3) and a plurality of blades (4), which have a root (5) and a tip (6). The blades (4) are delimited by a concave leading edge (7), whose projection in the fan plane of rotation (XY) is defined by two circular arc segments, and a convex trailing edge (8), whose projection in the fan plane of rotation (XY) is defined by one circular arc segment. The blades (4) are made from sections with aerodynamic profiles relatively extending in the direction of their centre line, providing good flow rate and air pressure relative to the overall dimensions of the fan.

Abstract translation: 公开了一种围绕具有中心毂（3）和多个叶片（4）的轴线（2）在平面（XY）中旋转的轴向风扇（1），其具有根部（5）和尖端（6） 。 叶片（4）由凹入的前缘（7）界定，其中在风扇的旋转平面（XY）中的突起由两个圆弧段限定，凸起的后缘（8）在扇形平面 的旋转（XY）由一个圆弧段限定。 叶片（4）由具有沿其中心线方向相对延伸的空气动力学轮廓的部分制成，相对于风扇的总体尺寸提供良好的流速和空气压力。

公开(公告)号：US20050260077A1

公开(公告)日：2005-11-24

申请号：US11131409

申请日：2005-05-18

Applicant: Yoji Sato

Inventor： Yoji Sato

IPC: F04D29/38 ,  B63H1/16 ,  F04D29/32

CPC classification number: F04D29/386

Abstract: A cooling fan has a metal spacer, a boss made of Nylon integrally formed with the spacer by an insert molding and seven blades extending outward therefrom. A skew angle of about 30 degrees is provided at a connecting portion or a base end portion of the blade to the boss so as to be inclined backward in relation to a rotating direction of the cooling fan. To the contrary, a skew angle of about 8 degrees is provided at a portion extending from the connecting portion to the leading end of the blade so as to be inclined forward in relation to the rotating direction.

Abstract translation: 冷却风扇具有金属间隔件，由尼龙制成的凸台，通过嵌件成型与间隔件一体形成，并且从其向外延伸的七个叶片。 在叶片的连接部或基端部向凸台设置约30度的倾斜角度，以相对于冷却风扇的旋转方向向后倾斜。 相反，在从连接部延伸到叶片的前端的部分处，相对于旋转方向向前倾斜地设置大约8度的倾斜角。

公开(公告)号：US06872052B2

公开(公告)日：2005-03-29

申请号：US10454928

申请日：2003-06-05

Applicant: Brian Havel ,  Bonifacio Castillo

Inventor： Brian Havel ,  Bonifacio Castillo

IPC: F04D29/32 ,  F04D29/38

CPC classification number: F04D29/326 ,  F04D29/384 ,  F04D29/386 ,  Y10S416/05

Abstract: A fan 10 includes a hub 12, a plurality of fan blades 14 attached to the hub at one end and extending outwardly from the hub, and a ring 18 concentric with the hub and coupled to tips 16 of the blades. A dimensionless radius (r/R) is defined from a center of the hub (r/R=0) radially outwardly, wherein each tip of the blades is r/R=1. A pitch ratio increases up to about r/R=0.85, and decreases in a range of about 0.85

Abstract translation: 风扇10包括轮毂12，多个风扇叶片14在一端连接到轮毂并从轮毂向外延伸，以及与轮毂同心并与叶片的尖端16连接的环18。 从轮毂的中心（r / R = 0）径向向外限定无量纲半径（r / R），其中叶片的每个尖端为r / R = 1。 间距比增加至约r / R = 0.85，并且在约0.85