专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明授权

US4697668A Aspirating muffler 失效
标题翻译：吸气消声器
公开(公告)号：US4697668A
公开(公告)日：1987-10-06
申请号：US818782
申请日：1986-01-13
申请人： Irvy T. Barker
发明人： Irvy T. Barker
IPC分类号： F01N5/04 , F01N1/14
CPC分类号： F01N5/04 , F01N2270/00 , Y02T10/16
摘要： An aspirating muffler having a simplified venturi construction. The muffler includes a body having an inlet pipe connected to the exhaust system of an engine and having an outlet pipe. The upstream end of the outlet pipe is rolled inwardly to provide the end with a reduced cross sectional area which defines a venturi. An aspirating tube which is connected to an air cleaner pre-cleaner for the engine communicates with the venturi and flow of exhaust gas through the venturi end of the outlet pipe creates an aspirating action to draw solid particles from the pre-cleaner and discharge the particles through the outlet pipe to the atmosphere.
摘要翻译：吸气消声器具有简化的文丘里结构。消音器包括具有连接到发动机的排气系统并具有出口管的入口管的主体。出口管的上游端向内滚动以使端部具有限定文丘里管的减小的横截面面积。连接到用于发动机的空气滤清器预清洁器的吸气管与文丘里管连通并且通过出口管的文丘里管端的排气流产生抽吸作用以从预清洁器中抽出固体颗粒并排出颗粒通过出口管道到达大气。

22. 发明授权

US4548034A Bypass gas turbine aeroengines and exhaust mixers therefor 失效
标题翻译：旁路燃气轮机航空发动机和排气混合器
公开(公告)号：US4548034A
公开(公告)日：1985-10-22
申请号：US598153
申请日：1984-04-09
申请人： Addison C. Maguire
发明人： Addison C. Maguire
IPC分类号： F02K1/38 , F01N1/14
CPC分类号： F02K1/386 , Y02T50/671
摘要： A bypass gas turbine aeroengine has an exhaust mixer of the lobed type. The trailing edges of the confronting sides of each lobe are cut back to form notches or scallops in the sides of the lobe. To reduce aerodynamic losses and engine length and weight, the final turbine stage within the engine core is without outlet guide vanes so that the turbine exhaust gas stream issuing from the turbine has a substantial swirl component of velocity. Correction back to an axial direction of mean flow at the downstream end of the exhaust mixer nozzle is achieved by making the area of the scallop in one of the confronting sides of each lobe greater than the area of the scallop in the other side, the arrangement being such that sufficient of the turbine exhaust stream effuses from the larger scallops in directions contrary to the swirl component of velocity to produce the desired correction.
摘要翻译：旁路燃气轮机航空发动机具有叶片式排气混合器。每个叶片的相对侧面的后缘被切割以在叶片的侧面形成凹口或扇贝。为了减少空气动力学损失和发动机长度和重量，发动机机芯内的最终涡轮级不具有出口导向叶片，使得从涡轮机排出的涡轮机废气流具有相当大的涡流分量。在排气混合器喷嘴的下游端的平均流动的轴向方向上的校正是通过使每个叶的面对面之一上的扇贝的面积大于另一侧的扇贝面积来实现的，使得足够的涡轮排气流在与速度的涡流分量相反的方向上从较大的扇贝流出以产生期望的校正。

23. 发明授权

US4487289A Exhaust muffler with protective shield 失效
标题翻译：排气消声器带防护罩
公开(公告)号：US4487289A
公开(公告)日：1984-12-11
申请号：US353181
申请日：1982-03-01
申请人： Kenneth J. Kicinski , Frederick H. Printiss, Sr. , Richard J. Jasensky
发明人： Kenneth J. Kicinski , Frederick H. Printiss, Sr. , Richard J. Jasensky
IPC分类号： F01N1/08 , F01N3/05 , F01N13/14 , F01N1/10 , F01N1/14
CPC分类号： F01N13/14 , F01N1/08 , F01N3/05 , Y02T10/20
摘要： An exhaust muffler having a protective shield to reduce noise radiation and to decrease the temperature of the exhaust gases being discharged from the muffler. The muffler is composed of an outer body enclosed at its ends by flanges, and an outer insulated shell is spaced outwardly from the body and is connected to the peripheral edges of the flanges. Holes are provided in the flanges which communicate with the space between the shell and the body so that air is drawn by convection through the space between the outer body and the shell. A tubular member is spaced outwardly of the outlet pipe of the muffler and the outer end of the tubular member projects outwardly beyond the outer end of the outlet pipe. Openings are provided in the base of the tubular member and exhaust gas being discharged from the outlet pipe creates an aspirating action, so that air is drawn in through the openings into the space between the tubular member and the outlet pipe by both convection and aspirating action to aid in cooling the exhaust gases being discharged through the outlet pipe.
摘要翻译：排气消音器具有防护罩以减少噪音辐射并降低排气从消音器排出的温度。消音器由外壳体组成，其外端由法兰封闭，外绝缘壳体与主体间隔开并连接到凸缘的周边边缘。在凸缘中提供孔，其与外壳和主体之间的空间连通，使得空气通过外部体和外壳之间的空间对流而被抽吸。管状构件与消音器的出口管向外隔开，并且管状构件的外端向外突出超出出口管的外端。开口设置在管状构件的基部中，并且从出口管排出的废气产生抽吸作用，使得空气通过对流和抽吸作用被吸入管状构件和出口管之间的空间中以帮助冷却通过出口管排出的废气。

24. 发明授权

US4474259A Internally ventilated noise suppressor for jet engine 失效
标题翻译：用于喷气发动机的内部通风噪声抑制器
公开(公告)号：US4474259A
公开(公告)日：1984-10-02
申请号：US372248
申请日：1982-04-26
申请人： Charles P. Wright
发明人： Charles P. Wright
IPC分类号： F02K1/46 , F01N1/14
CPC分类号： F02K1/46
摘要： A noise suppressor (24, 76) for a jet engine nozzle (12, 64) is constructed so that the noise suppressor internally ventilates the nozzle jet efflux with ambient air by tubes (26, 78) having ambient inlets (30, 90) upstream of the nozzle discharge end (38, 72). The noise suppressor tubes may be relatively short with respect to the nozzle length but extend downstream of the nozzle so that the gas exhaust jet pumps or aspirates ambient air through the internally ventilating tubes so as to properly mix the air with the gas exhaust to suppress the noise from the jet engine exhaust. The internally ventilating ducts of the noise suppressor extend downstream of the nozzle (38, 40, 72, 84) at least to just beyond a region of high static pressure in the jet and extend in the jet to where a substantial ejected airflow pressure and volume are maintained in the ducts. Where the internally ventilating ducts are arranged concentrically about the axis of the discharged jet, noise is suppressed radially around the nozzle. In other embodiments where the ducts are eccentrically positioned, noise is reduced in a favored or selected direction so as to reduce the total ventilation necessary in comparison with concentric ventilation. In situations where internal ventilation ducts extend into multi-element nozzle tubes or lobes, for example, the internally ventilating ducts may be asymmetrically positioned so as to reduce noise in only a particular direction, such as toward the community below or as to one side of the engine in question.
摘要翻译：用于喷气发动机喷嘴（12,64）的噪声抑制器（24,76）被构造成使得噪声抑制器通过具有环境入口（30,90）上游的管（26,78）在内部使具有环境空气的喷嘴射流内部通风的喷嘴排出端（38,72）。噪声抑制管相对于喷嘴长度可能相对较短，但是延伸到喷嘴的下游，使得排气喷射泵送或吸入通过内部通风管的环境空气，以便将空气与气体排气适当地混合，以抑制来自喷气发动机排气的噪音。噪声抑制器的内部通风管道延伸到喷嘴（38,40,72,84）的下游，至少刚好超过喷射器中高静态压力的区域，并且在射流中延伸到大体上喷出的气流压力和体积保持在管道中。在内部通风管道围绕排出的射流的轴线同心地布置的情况下，在喷嘴周围径向地抑制噪声。在其中管道偏心定位的其它实施例中，以有利或选择的方向降低噪声，以便与同心通气相比减少所需的总通气量。在内部通风管道延伸到多元件喷嘴管或裂片的情况下，例如，内部通风管道可以是不对称的，以便仅在特定方向上降低噪音，例如朝向下方的社区或者在有问题的引擎。

25. 发明授权

US4196793A Method of and device for attenuating the noise radiated by gas jets 失效
标题翻译：用于衰减气体射流辐射噪声的方法和装置
公开(公告)号：US4196793A
公开(公告)日：1980-04-08
申请号：US921009
申请日：1978-06-30
申请人： Constantin Teodorescu
发明人： Constantin Teodorescu
IPC分类号： F01N1/10 , F01N1/14 , G10K11/04 , F01N1/04 , F01N3/04 , F04F5/44
CPC分类号： F01N1/10 , F01N1/14 , Y10S454/906
摘要： A method of and a device for attenuating the noise radiated by a free-expion gas jet throughout the audible-frequency range as well as in the ultrasonic and infrasonic frequency ranges. Concomitantly with the complete and shock-free expansion of the gas into the atmosphere, the acoustic field of the jet is organized by the substantial diminution of the low-frequency tones by causing them to pass from the annular section of the jet to the narrow annular section of the nozzle slot. This is followed by sound-wave diffraction on emergence from the slot in the presence of a baffle, and by a wave reflection towards the sound-absorption lining of the device housing. The final noise results from an intensive ejection of ambient air by the primary gas which, leaving the nozzle slot, entrains the air by means of turbulence, the air entering through the annular channels of the case, reaching the outer orifices of the nozzle, and dividing into two flows, namely inside and outside the nozzle.
摘要翻译：一种用于衰减在整个可听频率范围以及超声波和次声频率范围内由自由扩张气体射流辐射的噪声的方法和装置。伴随着气体进入大气的完全和无冲击的膨胀，射流的声场通过使它们从射流的环形部分通过到窄环状物的低频色调的显着减小而被组织喷嘴槽的一部分。随后在存在挡板的情况下从槽出现时的声波衍射，以及朝向装置壳体的吸声衬里的波浪反射。最终的噪音是由初级气体强烈喷射环境空气，留下喷嘴槽，通过湍流夹带空气，通过壳体的环形通道进入的空气到达喷嘴的外部孔口，以及分成两个流，即喷嘴内部和外部。

26. 发明授权

US3865212A Surveillance aircraft muffler 失效
标题翻译：监视飞机消音器
公开(公告)号：US3865212A
公开(公告)日：1975-02-11
申请号：US42467473
申请日：1973-12-14
申请人： MCDONALD HUGH C
发明人： MCDONALD HUGH C
IPC分类号： F01N1/14 , F01N13/08
CPC分类号： F01N13/08 , F01N1/14
摘要： A muffler takes the form of a horizontal tubular member having a partition in one end which defines with an upper wall of the member an exhaust passage and with the lower wall of the member an air scoop. The arrangement is such that the exhaust passage includes a smoothly upwardly curved portion for connection directly to the downwardly extending exhaust pipe of an aircraft engine. The central portion of the tubular member is reduced in diameter to define at the end of the partition a venturi section, the other end of the tubular member flaring outwardly to terminate in an enlarged outlet opening. Exhaust gases are thus sucked into the muffler by action of the air scoop and venturi section, noise and gases from the exhaust pipe being directed horizontally rearwardly out the end of the muffler so that any sound in a downward direction is minimal.
摘要翻译：消声器采用水平管状构件的形式，其一端具有隔板，该构件在该构件的上壁上限定有排气通道，并且构件的下壁与空气勺形成。这种布置使得排气通道包括用于直接连接到飞行器发动机的向下延伸的排气管的平滑向上弯曲的部分。管状构件的中心部分的直径减小以限定在分隔件的端部处文丘里部分，管状构件的另一端向外扩张以终止于扩大的出口开口。因此，废气通过空气勺和文丘里管部分的作用被吸入消声器中，来自排气管的噪声和气体被水平地向后引导到消音器的端部，使得任何向下方向的声音都是最小的。

27. 发明授权

US3794137A Device for attenuating the noise generated by the expansion of gases into the atmosphere 失效
标题翻译：将气体扩散到大气中产生的噪音的装置
公开(公告)号：US3794137A
公开(公告)日：1974-02-26
申请号：US3794137D
申请日：1972-09-15
申请人： INST PENTRU CREATIE STINTIFIC
发明人： TEODORESCU C , CEAUSELU C , VASILESCU G
IPC分类号： G10K11/16 , F01N1/10 , F01N1/14 , F22B37/02 , F24F13/02 , G10K11/00 , F01N1/00
CPC分类号： F01N1/14 , F01N1/10 , Y10S239/07
摘要： A device for attenuating the noise generated by the expansion into the atmosphere of the gases an industrial installation. The device utilizes an exterior type Coanda ejector, the body of which has an annular cavity followed by a slot and further by an outer curving profile and a converging cone; the ejector lies in an attenuator ending in an exhaust cone.
摘要翻译：一种用于衰减由气体膨胀进入工业设备的气体产生的噪声的装置。

28. 发明授权

US3706353A Noise suppressor for jet engines 失效
标题翻译：喷气发动机噪声抑制器
公开(公告)号：US3706353A
公开(公告)日：1972-12-19
申请号：US3706353D
申请日：1971-11-23
申请人： SECR DEFENCE
发明人： FFOWCES-WILLIAMS JOHN EIRWYN , HAWKINS ROY , DAWSON HYLTON , SMITH WILLIAM
IPC分类号： F02K1/42 , F02K1/44 , F01N1/14 , B64D33/06 , F01N1/16
CPC分类号： F02K1/44 , B64D33/06 , F02K1/42
摘要： The disclosure of this invention pertains to noise suppression apparatus for jet engines wherein two convergent but otherwise relatively flat plates are arranged in a position downstream of the exhaust nozzle of an engine and at opposite sides of the nozzle axis so that a generally axisymmetric jet is flattened when passing through between the plates and is thereby caused to spread in a direction transverse to said axis with consequent noise suppression in said direction.
摘要翻译：本发明的公开内容涉及用于喷气式发动机的噪声抑制装置，其中两个会聚但相对平坦的板布置在发动机的排气喷嘴的下游位置并且在喷嘴轴线的相对侧处，使得大致轴对称的喷射器变平当通过板之间时，由此在横向于所述轴的方向上扩展，从而在所述方向上产生噪声抑制。

29. 发明授权

US3698509A Inlet noise silencer for a jet engine 失效
标题翻译：喷气发动机的入口噪声保护膜
公开(公告)号：US3698509A
公开(公告)日：1972-10-17
申请号：US3698509D
申请日：1971-06-24
申请人： UNITED AIRCRAFT CORP
发明人： FITTING SAMUEL E , GREEN GARY W
IPC分类号： F02C7/045 , F01N1/10 , B64D33/02 , F01N1/14
CPC分类号： F02C7/045 , F05D2220/50 , Y02T50/671
摘要： The noise silencer consists of an annular chamber being in communication with the inlet of the gas turbine engine and a substantially U-shaped baffle member disposed between the inlet of the silencer and the inlet of the engine wherein the legs of the U are spaced substantially parallel to the side walls of the cavity to define flow channels with L/D ratios (length to diameter or the smallest planar cross-sectional dimension when the cross section is other than circular) being greater than 1/2 , which channels serve to guide the air and sound waves over a resistive acoustical lining and provide a lined bend around which the air and sound waves must pass.
摘要翻译：噪声消声器包括与燃气涡轮发动机的入口连通的环形室和设置在消音器的入口与发动机入口之间的大致U形的挡板构件，其中U的腿基本上平行到腔的侧壁以限定具有L / D比（当横截面不是圆形的长度与直径或最小平面横截面尺寸）之间的流动通道大于1/2，该通道用于引导空气和声波在电阻声衬里上，并提供空气和声波必须通过的衬里弯曲。

30. 发明授权

US3669216A Model airplane muffler constructions 失效
标题翻译：型号空中打孔机构造
公开(公告)号：US3669216A
公开(公告)日：1972-06-13
申请号：US3669216D
申请日：1971-07-06
申请人： DONALD H SPIES
发明人： SPIES DONALD H
IPC分类号： F01N1/08 , F01N13/18 , F02B9/06 , F02B27/04 , F02B75/34 , F01N1/14 , F01N7/10
CPC分类号： F01N13/1805 , F01N1/08 , F02B9/06 , F02B27/04 , F02B75/34 , Y02T10/146 , Y10S181/404
摘要： A lightweight sheet metal model airplane muffler in the form of a hollow shell having symmetrical airfoil characteristics and defining an internal expansion chamber for exhaust gases. Outlet ports are provided in the camber regions of the shell where they communicate with the vacuum pockets which are established by the slipstream during flight and the low pressure air in such pockets assists in evacuating the chamber.
摘要翻译：一种轻型的钣金模型飞机消声器，其形式为具有对称翼型特征的空心壳体，并且限定了用于废气的内部膨胀室。出口端口设置在外壳的外壳区域中，在这些外壳中它们与在飞行过程中由滑流构建的真空袋连通，并且这种口袋中的低压空气有助于排空腔室。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式