公开(公告)号：US06431974B1

公开(公告)日：2002-08-13

申请号：US09537892

申请日：2000-03-29

申请人： Paul Antony Tetley ,  Charles A. Gans

发明人： Paul Antony Tetley ,  Charles A. Gans

IPC分类号： F23L1702

CPC分类号： F23L17/08 ,  F23J2900/13003 ,  F23L17/005

摘要： An apparatus, system and method for improving air entrainment and sound attenuation of gases being discharged from one or more outlet portions of an exhausting device using an acoustic wind band. The acoustical wind band helps improve entrainment of ambient environmental air with the exhaust gases being discharged from the exhausting device resulting in a tight plume of high velocity flow which improves the effective stack height of the exhausting device. This is achieved by positioning the sections of the acoustical wind band in spaced relation thus forming passages that allow outside ambient environmental air to flow into the acoustical wind band to mix with and dilute the exhausting gas. The sections may also be positioned extending upward and inward at an angle to further enhance the entrainment of ambient environmental air with the flow of exhaust gas from the gas exhaust device. The acoustical wind band also helps to block noise, especially line of sight noise, from the outlet of the exhausting device thereby improving sound attenuation. This may be achieved by having at least a portion of the bottom end of a lowest most section extend into the horizontal plane defined by the line of sight and having at least a portion of the top end and the bottom end of adjacent sections be coplanar, or preferably overlap, one another to block noise generated by the exhaust device or exhaust gas at the discharge from directly exiting the wind band. In addition, the acoustical wind band helps to protect the vena contracta produced by the converging flow (plume)of exhaust gas from environmental conditions, such as for example, wind shear.

摘要翻译： 一种用于改善使用声学风带从排气装置的一个或多个出口部分排出的气体的气体夹带和声音衰减的装置，系统和方法。 声学风带有助于改善周围环境空气的夹带，排气从排气装置排出，从而产生紧密的高速流量，从而提高了排气装置的有效叠层高度。 这通过将声学风带的部分定位成间隔的关系来实现，从而形成允许外部周围环境空气流入声带的混合和稀释排气的通道。 这些部分还可以以一定角度向上和向内延伸，以进一步增强周围环境空气与来自排气装置的废气流的夹带。 声学风带还有助于从排气装置的出口阻挡噪声，特别是视线噪声，从而改善声音衰减。 这可以通过使最低截面的底端的至少一部分延伸到由视线限定的水平面中并且具有相邻部分的顶端和底端的至少一部分是共面的来实现， 或者优选地彼此重叠以阻止排气装置产生的噪声或排出的排气直接离开风带。 此外，声风带有助于保护由环境条件（例如风切变）引起的废气的会聚流（羽流）产生的腔静脉收缩。

公开(公告)号：US20130315729A1

公开(公告)日：2013-11-28

申请号：US11958617

申请日：2007-12-18

申请人： Charles A. Gans ,  Paul A. Tetley

发明人： Charles A. Gans ,  Paul A. Tetley

IPC分类号： F04D29/40

CPC分类号： F24F13/10 ,  F04D29/701

摘要： A radial upblast exhaust apparatus includes a fan housing having a fan inlet to receive air to be exhausted and a fan outlet to expel air to be exhausted. An upper housing is positioned immediately above the fan housing. It includes a first wall section and a second wall section each shaped as a partial conical section being concaved toward each other. The upper housing forms an air outlet nozzle. A mechanism changes the outlet area of the outlet nozzle in order to provide a variable area outlet for the fan.

摘要翻译： 径向上升排气装置包括风扇壳体，风扇壳体具有用于接收要排出的空气的风扇入口和用于排出待排出的空气的风扇出口。 上壳体位于风扇外壳的正上方。 它包括第一壁部分和第二壁部分，每个第一壁部分和第二壁部分均形成为朝向彼此凹陷的部分圆锥形部分。 上壳体形成空气出口喷嘴。 机构改变出口喷嘴的出口面积，以便为风扇提供可变区域出口。