• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Pressure variation absorbing apparatus (10) is mounted adjacent to a moving fluid stream in the diffuser (14) of a centrifugal compressor for absorbing both acoustic and aerodynamic pressure variations. The absorbing apparatus (10) when mounted as a part of the diffuser wall of a centrifugal compressor not only reduces acoustic noise but also absorbs aerodynamic pressure variations increasing the efficiency of the compressor and simultaneously reducing the rate of flow at which surge occurs thereby enlarging the operational flow range of the compressor. A method of absorbing pressure variations in a moving fluid stream is also disclosed.
    公开号:SU1253435A3
    申请号:SU2733401
    申请日:1979-01-02
    公开日:1986-08-23
    发明作者:Г.Трейвер Дарвин；М.Андерсон Карл；Н.Абельхамид Амр
    申请人:Кэрриер Корпорейшн (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to compressor building, which is intended for damping acoustic, aerodynamic, and combinations of acoustic and aerodynamic oscillations or pulsations of fluid flow, in particular to centrifugal compressors for compressible fluid.
    The purpose of the invention is to reduce the noise level of the lowest frequency.
    FIG. 1 shows a centrifugal compressor, a cross-section; in fig. 2, node I in FIG. one; in FIG. 3, section A-A in FIG. 1.
    The centrifugal compressor for compressible fluid comprises a housing 1 and an impeller 2 arranged in it successively in the course of the flow of compressible fluid, a radial annular diffuser 3 formed by the walls of the housing 1, and in the latter one chamber 4 is made, at least, connected to the flow in the diffuser 3, and the collector ring collector 5. At the same time, the depth b of the chamber 4 is equal to 1/4 of the length f of the latter and is filled with a porous material forming the part of the side wall of the diffuser 3. The chamber 4 with the help of a multitude of concentric annular plates 6
    divided into a number of individual cavities. The chamber also contains a spiral plate 7 and blocking elements 8 installed between the turns of the plate 7. When running, the C1 part of the flow enters the impeller 2 of the compressor, then the radial ring diffuser 3, the chamber 4, from where it goes to the collecting ring collector 5 and further to the consumer .
    The presence of a chamber 4 filled with a porous material allows the damping of aerodynamic pressure fluctuations and, therefore,
    reduce noise emitted during compressor operation.
    The porous material for chamber 4 is chosen so that it absorbs or attenuates all frequencies that are higher than the frequency for which the cavity is intended. Separating chamber 4 by concentric annular plates 6 into a number of individual cavities or supplying
    chambers 4 spiral plate 7 and
    blocking elements 8 installed between the turns of the plate 7, prevents the flow of fluid to the impeller, i.e.
    in the opposite direction, thereby increasing the efficiency of the compressor.
    inLl
    FIG.
    权利要求:
    Claims (3)
    [1]
    1. A CENTRIFUGAL COMPRESSOR FOR A COMPRESSIBLE FLUID, comprising a housing and an impeller located in it in series with the flow of a compressible fluid, a radial ring diffuser formed by the walls of the housing, the latter having at least one chamber connected to the flow in the diffuser, and a prefabricated ring collector, characterized in that, in order to reduce the noise level of the lowest frequency, the depth of the chamber is equal to 1/4 of its length and is filled with porous material forming part of the back wall of the diffuser.
    [2]
    2. A compressor according to claim 1, characterized in that the chamber is divided into a number of separate cavities by means of a plurality of concentric annular plates.
    [3]
    3. The compressor according to π. 1, characterized in that the chamber contains a spiral plate and blocking elements installed between the turns of the plate.
    »SU„ „1253435 AZ <125
    类似技术:
    公开号 | 公开日 | 专利标题
    US2225398A|1940-12-17|Construction of ventilating fans
    AU2003271309B2|2008-07-03|Gas compression apparatus and method with noise attenuation
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    US4504188A|1985-03-12|Pressure variation absorber
    US2640557A|1953-06-02|Retroverted passage type muffler with outer conduit formed of sound absorbing material
    SU1253435A3|1986-08-23|Centrifugal compressor for compressible fluid medium
    CA2432094C|2010-07-27|Double layer acoustic liner and a fluid pressurizing device and method utilizing same
    US4411592A|1983-10-25|Pressure variation absorber
    US3180449A|1965-04-27|Noise abatement snubber for vacuum pump system
    SU1177550A1|1985-09-07|Silencer of high-delivery fan
    SU393466A1|1973-08-10|EXHAUST GAS NOISE PROTECTOR
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    SU670960A1|1979-06-30|Terk&#39;s suppressor
    SU1453057A1|1989-01-23|Exhaust silencer
    SU1204854A1|1986-01-15|Silencer for compressor suction line
    SU737664A1|1980-05-30|Fan noise silencer
    SU687260A1|1979-09-25|Axial ventilator
    SU756907A1|1991-10-30|Acoustic damper of afterburning chamber of turbojet engine
    KR830000588B1|1983-03-15|Pressure fluctuation absorber
    SU699233A1|1979-11-25|Vibration pump
    SU1068619A1|1984-01-23|Suction pipe of vertical impeller pump
    SU1339309A1|1987-09-23|Centrifugal compressor diffuser
    SU1430649A1|1988-10-15|Built-up pulley
    同族专利:
    公开号 | 公开日
    BR7804499A|1979-03-06|
    AU530089B2|1983-06-30|
    IT7825675D0|1978-07-13|
    WO1979000043A1|1979-02-08|
    DE2830294C3|1981-11-19|
    GB2001135A|1979-01-24|
    CH635899A5|1983-04-29|
    GB2001135B|1982-01-27|
    ZA783845B|1979-07-25|
    NL7807463A|1979-01-16|
    AR215323A1|1979-09-28|
    AU3785378A|1980-01-10|
    DE2830294A1|1979-01-25|
    JPS627400B2|1987-02-17|
    NL182239C|1988-02-01|
    MX146552A|1982-07-07|
    FR2397546A1|1979-02-09|
    JPS5439202A|1979-03-26|
    IN149314B|1981-10-24|
    DE2830294B2|1981-03-19|
    FR2397546B1|1985-11-29|
    IT1097154B|1985-08-26|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR833985A|1937-02-24|1938-11-08|Rheinmetall Borsig Ag|Improvements to turbo-compressors to prevent fluid threads from detaching from the wall|
    US2225398A|1939-09-13|1940-12-17|Clyde M Hamblin|Construction of ventilating fans|
    GB867808A|1956-11-08|1961-05-10|Werner Genest Ges Fur Isolieru|Improvements in or relating to silencers for jet propulsion units|
    GB908521A|1958-02-04|1962-10-17|Plannair Ltd|Improvements in or relating to axial-flow blowers and compressors|
    GB935379A|1958-09-25|1963-08-28|Garrett Corp|Sound attenuating apparatus|
    DE1428102B2|1962-09-12|1971-06-03|Geratebau Eberspacher KG, 7300 Ess hngen|DEVICE FOR FASTENING THE BORDER LAYER IN A RADIAL COMPRESSOR|
    GB1007068A|1963-10-29|1965-10-13|Brightside Heating And Enginee|Improvements relating to centrifugal fans|
    DE1196877B|1964-04-18|1965-07-15|Costa S Vasiljevic Dipl Ing Dr|Component based on the resonator principle for creating sound-absorbing surfaces or channels|
    GB1107726A|1964-07-07|1968-03-27|Sound Attenuators Ltd|Improved centrifugal fan or blower and a ventilator embodying the same|
    US3362629A|1965-12-21|1968-01-09|Carrier Corp|Centrifugal compressor|
    US3360193A|1965-12-29|1967-12-26|Rotron Mfg Co|Regenerative compressors with integral mufflers|
    GB1165211A|1966-04-22|1969-09-24|Sound Attenuators Ltd|Ventilating Appliance including a Centrifugal Fan|
    GB1192194A|1966-08-05|1970-05-20|Chiyoda Chem Eng Construct Co|Silencer for Suction or Discharge of Fluids Unders Pressure|
    US3540547A|1968-12-31|1970-11-17|Charles Waddell Coward Jr|Acoustical systems for air moving devices|
    US3738448A|1971-12-13|1973-06-12|Bolt Beranek & Newman|Sound silencing method and apparatus|
    JPS5027405B2|1973-05-18|1975-09-08|
    JPS5027405U|1973-07-04|1975-03-29|
    JPS5153606A|1974-11-05|1976-05-12|Sasakura Eng Co Ltd|Puroperafuanno soonboshofuanringu|
    DE2521416A1|1975-05-14|1976-11-25|Costa Silard Dipl I Vasiljevic|SILENT AXIAL FAN|
    US4174020A|1975-07-01|1979-11-13|Challis Louis A|Acoustic treatment for fans|
    JPS5278111U|1975-12-10|1977-06-10|EP0050621A1|1980-04-28|1982-05-05|KOOPMANN, Gary H.|Noise reduction system|
    GB2246395A|1990-07-26|1992-01-29|Garrett Automotive Limited|Noise attenuation in a turbocharger|
    DE4219249C2|1992-06-12|1994-03-31|Kuehnle Kopp Kausch Ag|Radial compressor, especially a turbocharger|
    DE19818873C2|1998-04-28|2001-07-05|Man B & W Diesel Ag|Reciprocating internal combustion engine|
    DE10112764A1|2001-03-16|2002-09-19|Mann & Hummel Filter|Radial compression turbocharger for an internal combustion engine has noise reducing openings along the housing wall|
    DE102012202707B3|2012-02-22|2013-03-07|Siemens Aktiengesellschaft|Impeller side chambers with resonators in radial flow machines|
    DE102012213622A1|2012-08-02|2014-02-06|Siemens Aktiengesellschaft|turbomachinery|
    JP6392103B2|2014-12-09|2018-09-19|三菱重工業株式会社|Sound absorber, centrifugal compressor, and supercharger|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US81533077A| true| 1977-07-13|1977-07-13|
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