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：US6112850A

公开(公告)日：2000-09-05

申请号：US390796

申请日：1999-09-07

申请人： Lynn Thomas Secrest ,  Paul Antony Tetley

发明人： Lynn Thomas Secrest ,  Paul Antony Tetley

IPC分类号： F04D29/44 ,  F04D29/66 ,  F23L17/00 ,  F23L17/02 ,  E04F17/04

CPC分类号： F04D29/663 ,  F23L17/005 ,  F23L17/02 ,  F23J2900/13003 ,  F24F2013/245 ,  Y10S454/906

摘要： An acoustic silencer nozzle for ventilation and exhaust fans. The nozzle provides at least two converging exhaust paths, each of which extend through an area that is adjacent acoustically absorbing media or resonating chambers. In this manner, the noise is reduced at the nozzle or outlet portion and provides a tight plume of high velocity discharge flow. Preferably, the nozzle has at least one opening that allows for ambient atmospheric air to mix with the exhaust gases at the outlet of the nozzle.

摘要翻译： 用于通风和排风扇的声消声器喷嘴。 喷嘴提供至少两个会聚的排气路径，每个排气路径延伸穿过相邻的吸声介质或谐振室的区域。 以这种方式，在喷嘴或出口部分处降低噪声，并提供高速排放流的紧密羽流。 优选地，喷嘴具有至少一个允许环境大气与喷嘴出口处的废气混合的开口。