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    • 3. 发明授权
    • Method and system for generating artificial tornadoes and related vortex
phenomena
    • 生成人造龙卷风及相关涡流现象的方法和系统
    • US5971765A
    • 1999-10-26
    • US621060
    • 1996-03-22
    • James GillDylan HixonJames LuxMartin Becker
    • James GillDylan HixonJames LuxMartin Becker
    • A63F7/04A63F9/00F15D1/00G09B23/12B04C3/00
    • F15D1/00G09B23/12A63F2009/0087A63F7/045
    • A system and method for generating tornadoes and other vortex phenomen in an open air, free space enviroment is disclosed. The system includes a flat surface or deck suspended above the ground, a circular hole in the center of the deck, a means for creating an updraft through the hole in the deck and fans or other air moving means for creating a swirling air flow. Preferably, the fans for swirling the air are angled approximately 45 degrees relative to the vertical axis of the updraft flow through the center hole. For swirling the air at higher elevations, as well as at ground level, a multi level fan arrangement having the layers of fans spaced relative to the deck is used. Alternatively, a single level of fans are used in conjunction with louvers or vanes for deflecting the blown air into a fan shape. In another embodiment of the present invention, tangential flow is established by using a multiplicity of tubes for returning air flow from a plenum above an updraft fan. Higher elevation air swirling is accomplished by providing vents in the return columns along the entire length. The vents can be holes in the columns or arrangements of adjustable or fixed vanes. Controls, including valves and shutters, are positioned in the return tubes for adjusting air flow patterns. The present system and method does not require containing chambers to remove external perturbations and to constrain air flow, actively, as opposed to passively, creates the swirling tangential flow, can be operated or performed indoors or outdoors and works with an asymmetric air flow.
    • 公开了一种用于在露天,自由空间环境中产生龙卷风和其他涡流现象的系统和方法。 该系统包括悬挂在地面上方的平坦表面或甲板,甲板中心的圆形孔,通过甲板上的孔产生上升气流的装置,以及用于产生旋转空气流的风扇或其它空气移动装置。 优选地,用于旋转空气的风扇相对于通过中心孔的上升气流的垂直轴线成大约45度。 为了在较高海拔以及地面上旋转空气,使用具有相对于甲板间隔开的风扇层的多级风扇装置。 或者,单级风扇与百叶窗或叶片一起使用,以将吹入的空气偏转成扇形。 在本发明的另一个实施例中,通过使用多个管来从上升气流风扇上方的气室返回空气流来建立切向流动。 通过在整个长度上的返回柱中提供通风口来实现较高的高程空气涡流。 通风口可以是可调节或固定叶片的列或排列中的孔。 控制器,包括阀门和百叶窗,位于回流管中,用于调节气流模式。 本系统和方法不需要包含室以去除外部扰动并且主动地限制空气流动,而不是被动地产生旋流切向流,可以在室内或室外操作或执行,并且与非对称空气流一起工作。