公开(公告)号：USD260452S

公开(公告)日：1981-09-01

申请号：US36046

申请日：1979-05-04

Applicant: David Greenblatt ,  Rick Spinoza

Designer： David Greenblatt ,  Rick Spinoza

公开(公告)号：USD260451S

公开(公告)日：1981-09-01

申请号：US35859

申请日：1979-05-04

Applicant: David Greenblatt ,  Rick Spinoza

Designer： David Greenblatt ,  Rick Spinoza

公开(公告)号：USD260448S

公开(公告)日：1981-09-01

申请号：US35856

申请日：1979-05-04

Applicant: David Greenblatt ,  Rick Spinoza

Designer： David Greenblatt ,  Rick Spinoza

公开(公告)号：US20130227940A1

公开(公告)日：2013-09-05

申请号：US13885843

申请日：2011-11-16

Applicant: David Greenblatt

Inventor： David Greenblatt

IPC: F03B17/06

CPC classification number: F03B17/06 ,  F03B5/00 ,  F03D5/00 ,  F05B2250/41 ,  Y02E10/20 ,  Y02E10/28 ,  Y02E10/70

Abstract: A device for use in extracting energy from an incoming fluid flow is presented. The device comprises: an oscillator assembly mounted on a base, the oscillator assembly comprising: a main body for exposing to an incoming fluid flow; and a joining element attached to the main body and configured for anchoring the main body to the base and enabling oscillation of the main body with respect to the base; an operative flow affecting unit comprising at least one flow interacting element located in at least one location respectively on a surface of the main body, the operative flow affecting unit being configured and controllably operable for affecting a separation of streams of the fluid flowing over the surface of the main body; a control unit in communication with the operative flow affecting unit, the control unit being configured and operable for activating and deactivating of each of the at least one flow interacting element of the operative flow affecting unit according to a certain time pattern, the time pattern being selected such that interaction between the flow interacting element and fluid streams creates vortices in the fluid streams at a selected vortex formation frequency causing an increase in oscillation of the main body, thereby enabling conversion of motion from the oscillation into useful energy.

Abstract translation: 提出了一种用于从进入的流体流中提取能量的装置。 该装置包括：安装在基座上的振荡器组件，振荡器组件包括：主体，用于暴露于进入的流体流; 以及连接元件，其附接到所述主体并且被构造用于将所述主体锚定到所述基座并且使得能够相对于所述基座摆动所述主体; 操作流影响单元包括位于主体的表面上的至少一个位置中的至少一个流动相互作用元件，所述操作流动影响单元被配置和可控制地操作以影响流过表面的流体的流分离 的主体; 控制单元，其与所述操作流影响单元通信，所述控制单元被配置和可操作以根据特定时间模式激活和去激活所述操作流影响单元的所述至少一个流动相互作用元件中的每一个，所述时间模式为 被选择为使得流动相互作用元件和流体流之间的相互作用在选定的涡流形成频率下在流体流中产生旋涡，从而导致主体的振荡增加，从而使得能够将运动从振荡转换成有用能量。

公开(公告)号：US20110123348A1

公开(公告)日：2011-05-26

申请号：US12811615

申请日：2009-01-01

Applicant: David Greenblatt

Inventor： David Greenblatt

IPC: F04D29/38

CPC classification number: F04D29/384 ,  B64C11/18

Abstract: The present invention relates to enhancing performance of fans and propellers using outsized Gurney flaps. Specifically, the current invention proposes the application of ‘outsized Gurney flaps’ (OGFs) to the trailing-edges of fan blades. According to an exemplary embodiment of the current invention, the Gurney flaps are larger than 10% of the fan blade chord length. Attaching OGFs is not only non-obvious; it seems counterintuitive, because it is akin to placing a large bluff body onto a flow. Preliminary experimental data acquired at Reynolds numbers typically exist during fan operation on idealized blade profiles showed a 100% increase in the generated lift and 40% to 60% increase in aerodynamic efficiency. This translates to significant improvements in fan performance at a given rpm, and/or significant saving in power and noise reduction for the same aerodynamic performance. The current invention may increase performance, may decrease energy consumption, may decrease size, may decrease cost, and may increase performance of: computer cooling fans, personal upright and ceiling fans, refrigeration fans, air conditioning fans, automotive fans, ventilation, vacuuming, small-scale propellers, etc.

Abstract translation: 本发明涉及使用超大型的格尼襟翼来提高风扇和螺旋桨的性能。 具体地说，本发明提出了将“超大格尼襟翼”（OGF）应用于风扇叶片的后缘。 根据本发明的示例性实施例，陀螺翼片大于风扇叶片弦长的10％。 附加OGF不仅不明显; 这似乎是违反直觉的，因为它类似于将一个大的虚张声势的身体放在流动上。 在理想叶片轮廓的风扇运行期间，通常在雷诺数处获得的初步实验数据显示产生的升力100％的增加和空气动力效率的增加40％至60％。 这意味着在给定rpm下风扇性能的显着改进，和/或相同的空气动力学性能显着节省功率和噪声降低。 本发明可以提高性能，可能降低能耗，可能减小尺寸，降低成本，并可提高性能：计算机冷却风扇，个人直立和吊扇，制冷风扇，空调风扇，汽车风扇，通风，抽真空， 小型螺旋桨等

公开(公告)号：US20100329838A1

公开(公告)日：2010-12-30

申请号：US12739825

申请日：2008-10-26

Applicant: David Greenblatt

Inventor： David Greenblatt

IPC: F04D29/56

CPC classification number: B64C23/005 ,  B64C2230/12 ,  F01D5/145 ,  F04D29/687 ,  F05D2270/172 ,  F15D1/12 ,  H05H1/2406 ,  H05H2001/2425 ,  H05H2001/2437 ,  Y02T50/166 ,  Y02T50/671 ,  Y02T50/673

Abstract: The current invention provides significant performance improvements or significant energy savings for fans used in these applications: personal, industrial and automotive cooling, ventilation, vacuuming and dust removal, inflating, computer component cooling, propulsors for unmanned and manned air vehicles, propulsors for airboats, air-cushion vehicles, airships and model aircraft. Additionally, the invention provides higher performance such as higher lift and higher lift efficiency to small air vehicles. These advantages are achieved by using plasma actuators to provide active flow control effectors into thin fan blades and wing.

Abstract translation: 本发明为这些应用中使用的风扇提供显着的性能改进或显着的节能：个人，工业和汽车冷却，通风，抽真空和除尘，充气，计算机部件冷却，无人驾驶和载人飞行器的推进器，用于安全艇的推进器， 气垫车，飞艇和模型飞机。 此外，本发明提供了更高的性能，例如对小型飞行器具有更高的提升和更高的提升效率。 这些优点通过使用等离子体致动器来提供主动流量控制效应器到薄风扇叶片和机翼中来实现。

公开(公告)号：US20060060723A1

公开(公告)日：2006-03-23

申请号：US11250700

申请日：2005-09-22

Applicant: David Greenblatt

Inventor： David Greenblatt

IPC: B64C21/04

CPC classification number: B64C3/141 ,  B64C21/04 ,  B64C21/06 ,  B64C21/08 ,  B64C2230/04 ,  B64C2230/06 ,  B64C2230/18 ,  Y02T50/166 ,  Y10T137/2213

Abstract: A method of controlling a shear layer for a fluid dynamic body introduces first periodic disturbances into the fluid medium at a first flow separation location. Simultaneously, second periodic disturbances are introduced into the fluid medium at a second flow separation location. A phase difference between the first and second periodic disturbances is adjusted to control flow separation of the shear layer as the fluid medium moves over the fluid dynamic body.

公开(公告)号：US20050103944A1

公开(公告)日：2005-05-19

申请号：US10890842

申请日：2004-07-08

Applicant: David Greenblatt

Inventor： David Greenblatt

IPC: B01D20060101 ,  B64C23/04 ,  B64C23/06

CPC classification number: B64C23/04

Abstract: A method and device utilizes boundary layer separation control for the purpose of wake vortex alleviation. Trailing vortices are manipulated by varying the spanwise vortex-sheet strength via either passive or active boundary layer separation control. Boundary layer separation can be diminished or promoted to vary vortex properties, such as locations and strengths, so as to generate wake signatures that are unstable, resulting in complex three-dimensional interaction and rapid destruction of vortex coherence in the wake. Separation control can be achieved in either a time-dependent or a time-invariant mode.

Abstract translation: 一种方法和装置利用边界层分离控制，用于尾流涡流减轻的目的。 通过无源或主动边界层分离控制来改变翼展涡旋板强度来操纵尾随涡旋。 可以减少或促进边界层分离以改变涡旋性质，例如位置和强度，以产生不稳定的尾迹，导致尾迹中的涡旋相干性的复杂的三维相互作用和快速破坏。 分离控制可以在时间依赖或时间不变模式下实现。

公开(公告)号：US09279412B2

公开(公告)日：2016-03-08

申请号：US13576849

申请日：2011-02-16

Applicant: David Greenblatt ,  Benyamin Sasson ,  Magen Schulman

Inventor： David Greenblatt ,  Benyamin Sasson ,  Magen Schulman

IPC: F03D7/06

CPC classification number: H04L65/105 ,  F03D7/06 ,  H04L65/1053 ,  Y02E10/74

Abstract: A control system is presented for controlling operation of a vertical axis wind turbine (VAWT) for generating energy from an incoming fluid flow. The control system comprises at least one flow affecting arrangement associated with at least one blade of the VAWT and a control unit connected to said flow affecting arrangement, the flow affecting arrangement comprising two flow affecting units located in two opposite sides of the blade respectively at a leading edge thereof, each flow affecting unit being operable for creating a blowing jet at the respective side of the blade thereby inducing an increase in a fluid flow momentum, the control unit being configured and operable for selectively activating the flow affecting units in alternating fashion according to a predetermined time pattern to oscillate the blowing jet at the opposite sides of the blade.

Abstract translation: 提出了一种用于控制用于从进入的流体流中产生能量的垂直轴风力涡轮机（VAWT）的操作的控制系统。 控制系统包括与VAWT的至少一个叶片相关联的至少一个流动影响装置和连接到所述流动影响装置的控制单元，所述流动影响装置包括分别位于叶片的两个相对侧中的两个流动影响单元 每个流动影响单元可操作用于在叶片的相应侧面处产生喷射射流，从而引起流体流动动量的增加，该控制单元被构造和操作以用于以交替方式选择性地启动流动影响单元 到预定的时间模式，以便在叶片的相对侧振荡喷吹。

公开(公告)号：US08764403B2

公开(公告)日：2014-07-01

申请号：US12811615

申请日：2009-01-01

Applicant: David Greenblatt

Inventor： David Greenblatt

IPC: F04D29/38

CPC classification number: F04D29/384 ,  B64C11/18

Abstract: The present invention relates to enhancing performance of fans and propellers using outsized Gurney flaps. Specifically, the current invention proposes the application of ‘outsized Gurney flaps’ (OGFs) to the trailing-edges of fan blades. According to an exemplary embodiment of the current invention, the Gurney flaps are larger than 10% of the fan blade chord length. Attaching OGFs is not only non-obvious; it seems counterintuitive, because it is akin to placing a large bluff body onto a flow. Preliminary experimental data acquired at Reynolds numbers typically exist during fan operation on idealized blade profiles showed a 100% increase in the generated lift and 40% to 60% increase in aerodynamic efficiency. This translates to significant improvements in fan performance at a given rpm, and/or significant saving in power and noise reduction for the same aerodynamic performance. The current invention may increase performance, may decrease energy consumption, may decrease size, may decrease cost, and may increase performance of: computer cooling fans, personal upright and ceiling fans, refrigeration fans, air conditioning fans, automotive fans, ventilation, vacuuming, small-scale propellers, etc.

Abstract translation: 本发明涉及使用超大型的格尼襟翼来提高风扇和螺旋桨的性能。 具体地说，本发明提出了将“超大格尼襟翼”（OGF）应用于风扇叶片的后缘。 根据本发明的示例性实施例，陀螺翼片大于风扇叶片弦长的10％。 附加OGF不仅不明显; 这似乎是违反直觉的，因为它类似于将一个大的虚张声势的身体放在流动上。 在理想叶片轮廓的风扇运行期间，通常在雷诺数处获得的初步实验数据显示产生的升力100％的增加和空气动力效率的增加40％至60％。 这意味着在给定rpm下风扇性能的显着改进，和/或相同的空气动力学性能显着节省功率和噪声降低。 本发明可以提高性能，可能降低能耗，可能减小尺寸，降低成本，并可提高性能：计算机冷却风扇，个人直立和吊扇，制冷风扇，空调风扇，汽车风扇，通风，抽真空， 小型螺旋桨等