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公开(公告)号：US4295416A
公开(公告)日：1981-10-20
申请号：US944134
申请日：1978-09-20
CPC分类号： F24F13/24 , F24F3/044 , F24F7/08 , Y10S454/906
摘要： An air distribution system for a building including a mixing plenum for receiving and mixing outside and return air. An input flow concentrator and integral silencer is disposed within and coupled to the mixing plenum. The flow concentrator and integral silencer is adapted to establish a substantially axially symmetrical flow path for air from the plenum to an output port. A fan is coupled to the output port to drive the air from the output port to the main duct for distribution throughout the building.
摘要翻译： 一种用于建筑物的空气分配系统，包括用于接收和混合外部和返回空气的混合室。 输入流集中器和整体消音器设置在混合气室内并联接到混合气室。 流动集中器和整体消音器适于建立用于从气室到输出端口的空气的基本轴向对称的流动路径。 风扇耦合到输出端口，以将空气从输出端口驱动到主管道，以分布在整个建筑物内。
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公开(公告)号：US5209259A
公开(公告)日：1993-05-11
申请号：US641402
申请日：1991-01-15
申请人： Terrence A. Dear , Karl U. Ingard
发明人： Terrence A. Dear , Karl U. Ingard
IPC分类号： F16K47/08 , F16L55/033
CPC分类号： F16L55/033 , F16K47/08 , Y10T137/85938 , Y10T137/86799
摘要： A fluid distribution system, such as a valve, comprises a housing having a chamber which has a plurality of acoustic modes. The acoustic modes are excited when fluid flows through the chamber. An inlet passage and an outlet passage are disposed in fluid communication with the chamber. A plate is disposed in the inlet passage. A plurality of orifices are formed in the plate. The orifices conduct fluid from the inlet passage to the chamber and reduce the coupling between the flow of fluid through the inlet passage and the acoustic modes of the chamber. With this arrangement, the acoustic modes of the chamber and the resonance frequency of each of the orifices are substantially unexcited by the flow of fluid through the orifices.
摘要翻译： 流体分配系统，例如阀，包括具有腔室的壳体，该腔室具有多个声学模式。 当流体流过腔室时，声学模式被激发。 入口通道和出口通道设置成与腔室流体连通。 板在入口通道中设置。 在板中形成多个孔。 孔口将流体从入口通道传导到腔室，并减少通过入口通道的流体流与室的声学模式之间的耦合。 通过这种布置，腔室的声学模式和每个孔口的共振频率基本上是通过通过孔口的流体的流动而引起的。
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公开(公告)号：US4319521A
公开(公告)日：1982-03-16
申请号：US117476
申请日：1980-02-01
CPC分类号： F24F13/24 , F24F3/044 , F24F7/08 , Y10S454/906
摘要： An air distribution system for a building including a mixing plenum for receiving and mixing outside and return air. An input flow concentrator and integral silencer is disposed within and coupled to the mixing plenum. The flow concentrator and integral silencer is adapted to establish a substantially axially symmetrical flow path for air from the plenum to an output port. A fan is coupled to the output port to drive the air from the output port to the main duct for distribution throughout the building.
摘要翻译： 一种用于建筑物的空气分配系统，包括用于接收和混合外部和返回空气的混合室。 输入流集中器和整体消音器设置在混合气室内并联接到混合气室。 流动集中器和整体消音器适于建立用于从气室到输出端口的空气的基本轴向对称的流动路径。 风扇耦合到输出端口，以将空气从输出端口驱动到主管道，以分布在整个建筑物内。
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公开(公告)号：US4313522A
公开(公告)日：1982-02-02
申请号：US073604
申请日：1979-09-10
申请人： Dimiter Gorchev , Karl U. Ingard
发明人： Dimiter Gorchev , Karl U. Ingard
IPC分类号： F16L55/033 , F24F13/24 , E04F17/04
CPC分类号： F16L55/033 , F24F13/24 , Y10S454/906
摘要： A static pressure regain coupler for coupling an input duct and the upstream end of a branch take-off device having a main duct and one or more channel. The static pressure regain (SPR) coupler includes an upstream end which has substantially the same cross-section as the input duct. The SPR coupler also includes a downstream end which has a first port having the same cross-section as the main duct of the take-off device, and a second port having substantially the same cross-section as the channels of the take-off device. The SPR coupler is adapted to couple most of the input airflow to the take-off main duct, and a minor portion of that air flow to the take-off channels.
摘要翻译： 一种用于联接输入管道和具有主管道和一个或多个通道的分支输出装置的上游端的静态压力恢复耦合器。 静压回收（SPR）耦合器包括具有与输入管道基本相同的横截面的上游端。 SPR联接器还包括下游端，其具有与引出装置的主管道相同的横截面的第一端口，以及具有与取出装置的通道基本相同的横截面的第二端口 。 SPR耦合器适于将大部分输入气流耦合到起飞主管道，并且该空气流的一小部分流到起飞通道。
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公开(公告)号：US4832147A
公开(公告)日：1989-05-23
申请号：US067723
申请日：1987-06-19
CPC分类号： E04B1/8218 , E04B1/8209 , E04B1/8409 , E04B2001/8281 , E04B2001/829
摘要： A volumetric sound absorber for audible sound frequencies is made from a thin sheet material that is permeable to air with thickness mass, and flow resistance within specified ranges.
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公开(公告)号：US4418788A
公开(公告)日：1983-12-06
申请号：US253270
申请日：1981-04-13
IPC分类号： F16L55/02 , E04F17/04 , F16L41/02 , F16L55/033 , F24F13/24
CPC分类号： F16L55/033 , F24F13/24 , Y10S454/906
摘要： Disclosed is a composite branch take-off and silencer for an air distribution system wherein an air stream from an input duct may be coupled to an output duct and one or more branch ducts. The take-off and silencer includes two series-coupled sections: a static pressure regain section and a channel section adapted for coupling the input duct to the output duct and the branch ducts. The static pressure regain section outer wall and the outer path-defining wall of the associated channel section have a composite cross section characterized by a continuous curve which results in smooth changes in air flow velocity without discontinuity in either magnitude or direction thereby providing efficient conversion of velocity pressure to static pressure. These continuous curves have a direction component along their length which is increasingly directed radially from the central axis of the input duct. The composite branch take-off and silencer promotes excellent air distribution while substantially reducing the noise normally associated with these systems.
摘要翻译： 公开了一种用于空气分配系统的复合分支起飞和消声器，其中来自输入管道的空气流可以联接到输出管道和一个或多个分支管道。 起飞和消音器包括两个串联耦合部分：静压回收部分和适于将输入管道连接到输出管道和分支管道的通道部分。 相关通道部分的静态压力恢复部分外壁和外部路径限定壁具有复合横截面，其特征在于连续曲线，其导致空气流速度的平滑变化，而不存在任何幅度或方向上的不连续性，从而提供有效的转换 速度压力为静压力。 这些连续曲线沿着它们的长度具有沿着输入管道的中心轴线逐渐指向的方向分量。 复合分支起飞和消音器提供优异的空气分配，同时显着降低与这些系统通常相关的噪音。
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公开(公告)号：US5014816A
公开(公告)日：1991-05-14
申请号：US434959
申请日：1989-11-09
CPC分类号： F01N13/007 , F01N1/02 , F02M35/10013 , F02M35/1227 , F02M35/1266 , F01N2490/20
摘要： A silencer having multiple integrated channels arranged in a labyrinth configuration is provided. The channels have one open end and one closed end with the open end in communication with a common zone which is connected to a flow duct. The channels are tuned to provide a selected resonance frequency.
摘要翻译： 提供具有以迷宫配置布置的多个集成通道的消音器。 通道具有一个开口端和一个封闭端，其开口端与连接到流动管道的公共区域连通。 调谐通道以提供选定的共振频率。
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公开(公告)号：US4346781A
公开(公告)日：1982-08-31
申请号：US157530
申请日：1980-06-09
申请人： Karl U. Ingard , William P. Patrick
发明人： Karl U. Ingard , William P. Patrick
CPC分类号： F16L55/02
摘要： A lined duct is divided into two parallel branches by means of a rigid partition. The phase speed of the fundamental mode in each branch depends on the liner configuration and can differ markedly from the free-space phase speed. When the liners in the two branches are not the same, the corresponding phase speeds will be different and a relative phase lag between the waves in the two branches results. This, in turn, leads to interference between these wave components (and their reflections) both at the exit and entrance of the parallel branch pair. This interference can be exploited for the purpose of obtaining a low-frequency attenuation which is substantially larger than the attenuation of the unpartitioned duct.
摘要翻译： 衬里的管道通过刚性隔板分成两个平行的分支。 每个分支中基模的相位速度取决于衬套结构，并且可以与自由空间相位速度明显不同。 当两个分支中的线束不相同时，相应的相位速度将不同，并且两个分支中的波之间产生相对相位滞后。 这反过来又导致平行分支对的出口和入口处的这些波浪分量（及其反射）之间的干扰。 这种干扰可以用于获得基本上大于未分割管道的衰减的低频衰减的目的。
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公开(公告)号：US5597985A
公开(公告)日：1997-01-28
申请号：US450644
申请日：1995-05-25
申请人： Terrence A. Dear , Karl U. Ingard
发明人： Terrence A. Dear , Karl U. Ingard
摘要： A corrugated structure is designed by dividing a given length of a corrugated structure into a number of sections, or corrugations. The length is then divided by the number of sections to obtain a constant value which serves as a reference point for determining the varied pitches of the structure of the present invention. The varying pitch of each section is determined by adding or subtracting a variation value from the constant value to obtain a varying pitch. The variation values, and thus the varying pitches, of the sections of corrugated structure are empirically chosen. Whistles, or pure tones of noise, produced by the flow of a fluid relative to the corrugations are eliminated when the corrugated structure is designed according to three requirements: 1) the total of the pitches of a given section is approximately equal to the length of a given section; 2) no two adjacent sections can have the same pitch; 3) no two variations within a given set of sections can have the same value. A group of varying pitches can itself be repeated in the manufacture of an extended structure. Such a design is particularly useful in blow-molded or injection-molded hoses, where the repetition of the pattern of varying pitches is easily adapted to manufacturing techniques. Such hoses may be used in a variety of applications, including architectural, medical, automotive and aircraft.
摘要翻译： 通过将波纹结构的给定长度分成多个部分或波纹来设计波纹结构。 然后将长度除以部分的数量以获得用作确定本发明的结构的变化间距的参考点的常数值。 通过从常数值中增加或减去变化值来确定每个部分的变化间距以获得变化的间距。 经验选择波纹结构部分的变化值，并因此改变间距。 当根据三个要求设计波纹结构时，消除了由流体相对于波纹流动产生的口哨声或纯噪声噪声：1）给定部分的间距的总和近似等于 给定部分; 2）没有两个相邻的部分可以具有相同的间距; 3）给定的一组部分中没有两个变化可以具有相同的值。 本身可以在制造延伸结构中重复一组变化的间距。 这种设计在吹塑或注射成型的软管中是特别有用的，其中变化间距的图案的重复很容易适应于制造技术。 这种软管可以用于各种应用中，包括建筑，医疗，汽车和飞机。
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公开(公告)号：US4360075A
公开(公告)日：1982-11-23
申请号：US262464
申请日：1981-05-11
CPC分类号： F01N1/08 , F01N1/02 , F01N2490/155 , F02B3/06
摘要： An exhaust silencer especially for turbo-charged diesel locomotives with a single exhaust outlet combines a straight through exhaust duct preferably diverging to recover velocity pressure and minimize back pressure with dual silencing means including a large expansion tank around the duct tuned to attenuate a fundamental low frequency exhaust noise peak and smaller reactive chambered means in the duct sized to attenuate a selected mid range of higher frequency exhaust noise. Various features are included.
摘要翻译： 特别是用于具有单个排气出口的涡轮增压柴油机车的排气消音器组合了直通排气管道，优选地发散以回收速度压力并使双重沉默装置最小化背压，包括围绕管道的大型膨胀箱，其被调谐以衰减基本低频 管道中的排气噪声峰值和较小的反应室装置的尺寸设计成能够衰减选定的较高频率排气噪声的中间范围。 包括各种功能。
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