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公开(公告)号：US06390418B1
公开(公告)日：2002-05-21
申请号：US09257565
申请日：1999-02-25
IPC分类号： B64C2300
CPC分类号： F15D1/12 , B64C23/00 , B64C2230/02 , B64C2230/04 , B64C2230/16 , B64C2230/28 , Y02T50/166
摘要： The nozzle of an acoustic jet directs high momentum flux gas particles essentially tangentially into the boundary layer of the flow in a diffuser, an engine air inlet, a jet engine gas flow path or on the suction surface of an airfoil, the gas particles in the chamber of the tangential acoustic jet being replenished with approaching low momentum flux particles drawn from the gas flow in a direction normal to the surface, thereby to provide a net time-averaged flow of increased momentum flux particles to defer the onset of boundary layer separation and/or reduce the thickness of the boundary layer. The acoustic jet is driven by a gas pressure oscillation generator which may be a loudspeaker, a resonant solenoid piston, a cranked piston, or the like.
摘要翻译： 声射流的喷嘴将高动量通量气体颗粒基本切向地引入扩散器，发动机空气入口，喷气发动机气体流路或翼型吸入表面上的流动的边界层中，气体颗粒在 切向声射流的腔室被补充有接近从气流沿垂直于表面的方向吸取的低动量通量粒子，从而提供增加的动量通量粒子的净时间平均流，推迟边界层分离的开始， /或减小边界层的厚度。 声射流由可能是扬声器，谐振电磁阀活塞，曲柄活塞等的气压振荡发生器驱动。
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公开(公告)号：US20130042600A1
公开(公告)日：2013-02-21
申请号：US13213938
申请日：2011-08-19
CPC分类号： F01N1/023 , F01N5/02 , F01N2230/08 , F01N2240/02 , F01N2490/15 , Y02T10/16
摘要： A sound attenuating heat exchanger for an internal combustion engine includes a housing, a barrier wall and a fin. The housing includes an exhaust inlet, an exhaust outlet, a coolant inlet and a coolant outlet. The exhaust inlet is connected to the exhaust outlet by an exhaust flow passage. The coolant inlet is connected to the coolant outlet by a coolant flow passage. The barrier wall fluidly separates the exhaust flow passage from the coolant flow passage. The fin extends from the barrier wall into the exhaust flow passage, and includes a resonator adapted to attenuate sound waves traveling through exhaust gas within the exhaust flow passage. The barrier wall and the fins are adapted to exchange heat energy between the exhaust gas flowing through the exhaust flow passage and coolant flowing through the coolant flow passage.
摘要翻译： 用于内燃机的声衰减热交换器包括壳体，阻挡壁和翅片。 壳体包括排气入口，排气出口，冷却剂入口和冷却剂出口。 排气入口通过排气通道连接到排气出口。 冷却剂入口通过冷却剂流动通道连接到冷却剂出口。 阻挡壁使排气流动通道与冷却剂流动通道分离。 翅片从阻挡壁延伸到排气流动通道中，并且包括适于衰减在排气流动通道内通过废气传播的声波的谐振器。 阻挡壁和翅片适于在流过排气流动通道的废气和流过冷却剂流动通道的冷却剂之间交换热能。
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公开(公告)号：US5828760A
公开(公告)日：1998-10-27
申请号：US672168
申请日：1996-06-26
IPC分类号： G10K11/178 , H03B29/00
CPC分类号： G10K11/1782 , G10K11/178 , G10K2210/129 , G10K2210/3026 , G10K2210/30391 , G10K2210/3217 , G10K2210/3229
摘要： An active noise (or vibration) control system having an actuator 24 which provides an acoustic anti-noise signal in response to an drive signal (U), an error sensor 16 which senses the acoustic anti-noise signal from the actuator, senses disturbance noise (d), and provides an error signal (e) indicative of a combination thereof, and a controller 20, responsive to the error signal (e), which provides the drive signal (U) to the actuator 24, is provided with controller compensation 78 having energy states 112 and having non-linear reset logic 130 which temporarily resets the energy states 112 in the filter 78 to zero when the error signal crosses zero, thereby improving the bandwidth of the active noise control system.
摘要翻译： 具有响应于驱动信号（U）提供声学抗噪声信号的致动器24的有源噪声（或振动）控制系统，感测来自致动器的声学抗噪声信号的误差传感器16感测干扰噪声 （d），并且提供表示其组合的误差信号（e），并且响应于向致动器24提供驱动信号（U）的误差信号（e）的控制器20设置有控制器补偿 78具有能量状态112并且具有非线性复位逻辑130，其在误差信号越过零时临时将滤波器78中的能量状态112复位为零，从而改善有源噪声控制系统的带宽。
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公开(公告)号：US20110311924A1
公开(公告)日：2011-12-22
申请号：US13166361
申请日：2011-06-22
申请人： William Proscia , Scott A. Liljenberg , William J. Roy , Duane C. McCormick , Christopher T. Chipman
发明人： William Proscia , Scott A. Liljenberg , William J. Roy , Duane C. McCormick , Christopher T. Chipman
CPC分类号： F23D14/04 , F23D2210/00 , F23M20/005
摘要： An improved induced draft gas burner assembly (31, 131, 231, 331, 431, 531, 631) for low NOx residential and light commercial gas furnaces (10, 10a) is disclosed. The improved burner includes an upstream assembly coupled to a fuel inlet (55) and an air inlet (43). The air inlet (43) is coupled to a neck (41, 141, 241, 341, 441, 541, 641) extending between the air inlet (43) and the outlet of the neck (41, 141, 241, 341, 441, 541, 641), both of which may be disposed within an optional chamber (42, 142, 242, 342, 442). If used, such a chamber (42, 142, 242, 342, 442) also includes an outlet coupled to a burner (46, 146, 246, 346, 546, 646). In practice, the chamber (42, 142, 242, 342, 442) and neck (41, 141, 241, 341, 441, 541, 641) behave as a Helmholtz resonator that can be tuned to provide an upstream impedance Zup that exceeds the downstream impedance Zdown of the components downstream of the burner assembly (31, 131, 231, 331, 431, 531, 631). The volume of the chamber (42, 142, 242, 342, 442), the length and cross-sectional area and shape or geometry of the neck (41, 141, 241, 341, 441, 541, 641) provide convenient variables for manipulating Zup and stabilizing the flame. Various configurations of the neck (41, 141, 241, 341, 441, 541, 641) may be use to provide a sufficient volume thereby eliminating the need for the chamber (42, 142, 242, 342, 442).
摘要翻译： 公开了一种用于低NOx住宅和轻型商业燃气炉（10,10a）的改进的引风通风炉燃烧器组件（31,131,231,331,431,531,631）。 改进的燃烧器包括联接到燃料入口（55）和空气入口（43）的上游组件。 空气入口（43）联接到在空气入口（43）和颈部（41,141,241,341,441）的出口之间延伸的颈部（41,141,241,341,441,541,641） ，541,641），它们都可以设置在任选的室（42,142,242,342,442）内。 如果使用，这样的室（42,142,242,342,442）还包括连接到燃烧器（46,146,246,346,546,646）的出口。 在实践中，室（42,142,242,342,442）和颈部（41,41,241,341,441,541,641）表现为亥姆霍兹共振器，其可被调谐以提供超过的上游阻抗Zup 在燃烧器组件（31,131,231,331,431,531,631）下游的部件的下游阻抗Zdown。 腔室（42,142,242,342,442）的体积，颈部（41,141,241,341,441,541,641）的长度和横截面积以及形状或几何形状为 操纵Zup并稳定火焰。 可以使用颈部（41,141,241,341,441,541,641）的各种构造来提供足够的体积，从而消除对腔室（42,142,242,342,442）的需要。
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公开(公告)号：US06379110B1
公开(公告)日：2002-04-30
申请号：US09257563
申请日：1999-02-25
申请人： Duane C. McCormick , Wesley K. Lord
发明人： Duane C. McCormick , Wesley K. Lord
IPC分类号： F01D2504
CPC分类号： F01D11/08 , B64C23/00 , B64C2230/02 , B64C2230/08 , B64C2230/24 , B64C2230/28 , F01D11/10 , F05D2260/96 , Y02T50/166 , Y10S415/914
摘要： Existing pressure oscillations created by axial or centrifugal fans in a diverging shroud are utilized to power a passive, acoustic jet, the nozzle of which directs high momentum flux gas particles essentially tangentially into the boundary layer of the flow in a diffuser, or a duct, the fluid particles in the resonant chamber of the passive acoustic jet being replenished with low momentum flux particles drawn from the fluid flow in a direction normal to the surface, thereby to provide a net time averaged flow of increased momentum flux particles to defer, even eliminate, the onset of boundary layer separation in the diffuser or duct. The passive acoustic jet is used in the vicinity of fan blade tips to alleviate undesirable flow effects in the tip region, such as leakage.
摘要翻译： 在发散的护罩中由轴向或离心风扇产生的现有压力振荡用于为被动的声射流提供动力，其中喷嘴将高动量通量气体颗粒基本切向地引入扩散器或管道中的流动的边界层， 被动声射流的谐振腔中的流体颗粒被补充有从垂直于表面的方向从流体流中抽出的低动量通量粒子，从而提供增加的动量通量粒子的净时间平均流量推迟甚至消除 ，扩散器或管道中边界层分离的开始。 在风扇叶片尖端附近使用无源的声学射流以减轻尖端区域中的不期望的流动效应，例如泄漏。
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公开(公告)号：US6049615A
公开(公告)日：2000-04-11
申请号：US884231
申请日：1997-06-27
CPC分类号： F24F13/24 , G10K11/1788 , F24F2013/247 , G10K2210/104 , G10K2210/109 , G10K2210/112 , G10K2210/3026 , G10K2210/3027 , G10K2210/3219
摘要： The internal fan arrangement of an AHU is reconfigured by discharging directly from the scroll into a 90.degree. elbow. The bend of the elbow defines a converging section terminating in a throat which leads to a diverging section. Additionally, the ANC structure is located in the elbow with the noise sensing microphones being located at or near the fan outlet.
摘要翻译： AHU的内部风扇装置通过从涡卷直接排放到90°弯头来重新配置。 肘部的弯曲限定了终止于喉部的会聚部分，其导致发散部分。 此外，ANC结构位于肘部，噪声感应麦克风位于风扇出口处或附近。
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公开(公告)号：US08596050B2
公开(公告)日：2013-12-03
申请号：US13213938
申请日：2011-08-19
IPC分类号： F01N1/00
CPC分类号： F01N1/023 , F01N5/02 , F01N2230/08 , F01N2240/02 , F01N2490/15 , Y02T10/16
摘要： A sound attenuating heat exchanger for an internal combustion engine includes a housing, a barrier wall and a fin. The housing includes an exhaust inlet, an exhaust outlet, a coolant inlet and a coolant outlet. The exhaust inlet is connected to the exhaust outlet by an exhaust flow passage. The coolant inlet is connected to the coolant outlet by a coolant flow passage. The barrier wall fluidly separates the exhaust flow passage from the coolant flow passage. The fin extends from the barrier wall into the exhaust flow passage, and includes a resonator adapted to attenuate sound waves traveling through exhaust gas within the exhaust flow passage. The barrier wall and the fins are adapted to exchange heat energy between the exhaust gas flowing through the exhaust flow passage and coolant flowing through the coolant flow passage.
摘要翻译： 用于内燃机的声衰减热交换器包括壳体，阻挡壁和翅片。 壳体包括排气入口，排气出口，冷却剂入口和冷却剂出口。 排气入口通过排气通道连接到排气出口。 冷却剂入口通过冷却剂流动通道连接到冷却剂出口。 阻挡壁使排气流动通道与冷却剂流动通道分离。 翅片从阻挡壁延伸到排气流动通道中，并且包括适于衰减在排气流动通道内通过废气传播的声波的谐振器。 阻挡壁和翅片适于在流过排气流动通道的废气和流过冷却剂流动通道的冷却剂之间交换热能。
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公开(公告)号：US07080977B2
公开(公告)日：2006-07-25
申请号：US10397018
申请日：2003-03-25
申请人： Duane C. McCormick , Jeffrey A. Math , Dochul Choi , Gavin J. Hendricks , William H. Rousseau , H. Ezzat Khalifa , Jeffery J. Nieter , Timothy C. Wagner
发明人： Duane C. McCormick , Jeffrey A. Math , Dochul Choi , Gavin J. Hendricks , William H. Rousseau , H. Ezzat Khalifa , Jeffery J. Nieter , Timothy C. Wagner
CPC分类号： F01C21/10 , F04C18/16 , F04C2250/102
摘要： A discharge collector and diffuser for a screw compressor, including a housing having an inlet for receiving flow from a compressor and an outlet and defining therebetween a collector portion, a transition portion and a diffuser portion, the collector portion being adapted to receive a plurality of non-parallel streams from a compressor and to guide the streams into a substantially parallel flow direction, the housing further having a splitter plate positioned in the collector portion to separate the non-parallel streams from each other, whereby the streams are maintained separate until they are substantially parallel, thereby reducing flow losses.
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公开(公告)号：US5808243A
公开(公告)日：1998-09-15
申请号：US699674
申请日：1996-08-30
CPC分类号： G10K11/002 , H04R1/086 , Y10S367/901
摘要： An acoustic sensing means such as a microphone or a thin-film sensor is located in a flowing medium. To prevent the sensing of flow generated noise, the sensing means is separated from the flowing medium by at least three stages of shielding. In a preferred embodiment, the sensing means is located within a foam shield which is located in a frame covered by a fabric shield and which is, in turn, located in a second frame covered by a second fabric shield. A spandex fabric is suitable for use in the present invention.
摘要翻译： 诸如麦克风或薄膜传感器的声学感测装置位于流动介质中。 为了防止感测流量产生的噪声，感测装置与流动介质分开至少三个屏蔽阶段。 在优选实施例中，感测装置位于泡沫屏蔽内，泡沫屏蔽件位于由织物护罩覆盖的框架中，并且其又位于由第二织物护罩覆盖的第二框架中。 氨纶布适用于本发明。
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10.发明授权公开(公告)号：US07530787B2
公开(公告)日：2009-05-12
申请号：US11436362
申请日：2006-05-18
申请人： Fabio P. Bertolotti , Mark W. Scott , Brian E. Wake , T. Alan Egolf , Duane C. McCormick , Ebru Usta , Stuart S. Ochs
发明人： Fabio P. Bertolotti , Mark W. Scott , Brian E. Wake , T. Alan Egolf , Duane C. McCormick , Ebru Usta , Stuart S. Ochs
IPC分类号： B64C27/50
摘要： A rotor hub fairing system includes an upper hub fairing, a lower hub fairing and a shaft fairing therebetween. The rotor hub fairing system reduces the total drag on a dual, counter-rotating, coaxial rotor system. Other aerodynamic structures may be mounted to the shaft fairing, hub fairings and airframe to facilitate flow around the upper and lower hub fairings to reduce flow separation and drag.
摘要翻译： 转子轮毂整流罩系统包括上部轮毂整流罩，下部轮毂整流罩和在其间的整流装置。 转子轮毂整流罩系统减少了双重反向旋转同轴转子系统的总阻力。 其他空气动力学结构可以安装到轴整流罩，轮毂整流罩和机身，以便于围绕上部和下部轮毂整流罩流动以减少流动分离和阻力。
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