• 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:
    1501411 Axial-flow fans SVENSKA FLAKTFABRIKEN AB 10 April 1975 [12 April 1974] 14670/75 Heading F1C The impeller blades 12, Fig. 2, of an axial flow fan are connected by rolling line contact pivots to a rotor rim 10 to permit swinging movement of each blade, about an axis which lies in a plane normal to a radius of the rim passing through the blade connection, in order to raise the blade resonance frequency. In one embodiment, Fig. 2, the pivot is formed by a metal pin 30 or round-nosed wedge held loosely by a strap 34 and which is in rolling engagement with a metal plate 32 or a groove therein, a ring 48 retaining the pin in position. A clip 60 centres the blade relative to a hole 44 in the rim 10. Plate 32 is screw mounted on rim 10 and may be rotated to provide pitch adjustment. In another embodiment the pitch may be adjusted by a pin 70, Fig. 6, attached to one end of pin 30 and which is moved parallel to the rotor axis by an annular disc 76 fast with a control sleeve 80 slidable on the hub 26. In this way the pitch of all the blades may be adjusted simultaneously. Counterweights 33 counteract the tendency of the blade to turn under the action of centrifugal force.
    公开号:SU722501A3
    申请号:SU752121940
    申请日:1975-04-11
    公开日:1980-03-15
    发明作者:Эрик Ф.Фермер Карл-；И.Свенссон Деннис
    申请人:Актиеболагет Свенска Флактфабрикен (Фирма)；
    IPC主号:
    专利说明:

    This invention relates to the field of torus construction. Known is an impeller of an axial fan, which contains a rim, in which locking pins are installed, fixed in the eyelets of the shanks of the blades U. However, such an impeller is not reliable enough. The aim of the invention is to increase the reliability of the wheel. This is achieved by supporting sleeves on the inner surface of the rim of the proposed wheel, through the radial holes of which the needle blades are missed, plates with restrictive slots for placing the pins are fixed at the ends of the sleeves, and loop hinges are placed between the walls of the sleeves of the blades plate retainers. Supporting sleeves are made in the form of an intermediate ring and fixed on the rim with the possibility of turning the disc, and in the latter one can make a groove for the pins. FIG. Figure 1 shows the working wheel described, longitudinal section; in fig. 2 is a section along aa in FIG. 1 in FIG. 3 is a section according to BB in FIG. 2 The impeller of an axial fan has an id I, in which locking sockets 2 pins 3 are mounted, fixed in eyelets 4 of the working blade blades 5. On the inner surface of the rim 1 there are fixed bushes ring 6 and mounted on the rim with the possibility of rotation of the end disk 7, in which the groove 8 under the pin 3 can be made. At the ends of the sleeves there are fixed plates 9 with restrictive slots 10 for placing the pins 3. For fixing the blade 5 in the working position at turning off the engine, the lugs of the 4 shanks are installed in an “out” 11 having a V-shape, the free ends of which are bent and fixed on the rim 1. In order to rotate the disk 7, arc-shaped grooves 12 are made in it, which include screws 13 long. fixing the disk, and hence the blades 5 in the desired position. When the wheel is in operation, the centrifugal forces acting on the blades 5 in the radial direction, press the pin 3 to the disk 7, and the linear contact of the two parts is made, and does not create a large contact force.
    权利要求:
    Claims (3)
    [1]
    Claim
    1. The impeller of the axial fan, containing the rim, in the lock ridges of which there are pins fixed in the eyes of the shanks of the blades, characterized in that, in order to increase reliability, the supporting bushings are fixed on the inner surface of the rim, through the radial holes of which the shanks of the blades are passed, plates with restrictive slots for accommodating pins are fixed on the ends of the bushings, and loop-type plate clamps are placed between the walls of the 5 holes of the bushings and the shanks.
    [2]
    2. The wheel according to claim 1, characterized in that the support sleeves are made in the form of an intermediate ring of 10 centigrade and mounted on the rim with the possibility of turning the end disk.
    [3]
    3. Wheel according to claims 1 and 2, which is due to the fact that a groove for the pins is made in the end disk.
    15 Sources of information taken into account in the examination
    1. French Patent No. 21926 ^ 26, cl. F 04 D 29/36, published. * 197 4.
    ЦНИИПИ Order 176/48 Circulation 725 Subscription
    Branch of PPP '' Patent ' 1 , Uzhhorod, st. Project, 4
    类似技术:
    公开号 | 公开日 | 专利标题
    SU722501A3|1980-03-15|Axial ventilator operating wheel
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    JPH062711A|1994-01-11|Automatic positioning type beam support bearing and bearing including said bearing and shaft assembly
    US3069070A|1962-12-18|Diffuser vane system for turbomachinery
    JPH0772486B2|1995-08-02|Turbomachine wheel with blades
    GB1259750A|1972-01-12|Rotor for a fluid flow machine
    GB1527623A|1978-10-04|Axial flow fan
    JP2001182502A|2001-07-06|Holding device and holding method for rotary machine moving blade
    US4752187A|1988-06-21|Radial impeller for fluid flow machines
    US3733147A|1973-05-15|Radial and axial airflow fan
    US6736601B2|2004-05-18|Impeller for an axial flow fan and a method of mounting a blade on a hub for such fan
    US3680674A|1972-08-01|Centrifugal clutch
    GB1062383A|1967-03-22|Compressor or turbine adjustable guide vanes
    US1657758A|1928-01-31|Fan blower
    US4135849A|1979-01-23|Pinned root turbine blade providing maximum friction damping
    US4025233A|1977-05-24|Rotor for wind-driven machine
    US3039738A|1962-06-19|Blade retention means
    US2928587A|1960-03-15|Blade center lock
    SU976135A1|1982-11-23|Fan impeller
    SU630954A1|1979-12-30|Turbomachine stator apparatus
    US3826109A|1974-07-30|Cam positioned drive connector for rotor
    US2353578A|1944-07-11|Spinner for airscrews
    US3061384A|1962-10-30|Thrust bearing
    同族专利:
    公开号 | 公开日
    SE418416B|1981-05-25|
    CA1045094A|1978-12-26|
    FR2267465B1|1980-12-05|
    CS184778B2|1978-09-15|
    FI751011A|1975-10-13|
    DK138959C|1979-05-07|
    AT341639B|1978-02-27|
    DK138959B|1978-11-20|
    NO144180C|1981-07-08|
    IN144733B|1978-06-24|
    AU8007275A|1976-10-14|
    SE7502990L|1975-10-13|
    NO144180B|1981-03-30|
    US3984194A|1976-10-05|
    JPS5113408A|1976-02-02|
    DK144575A|1975-10-13|
    ES436430A1|1977-01-01|
    FR2267465A1|1975-11-07|
    ATA260875A|1977-06-15|
    BE827702A|1975-07-31|
    DE2515900A1|1976-03-04|
    IT1037118B|1979-11-10|
    GB1501411A|1978-02-15|
    FI57169B|1980-02-29|
    NL7504341A|1975-10-14|
    FI57169C|1980-06-10|
    NO751267L|1975-10-14|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR523917A|1919-12-08|1921-08-27|Aviation Louis Breguet Sa|Flexible propeller hub|
    US1802648A|1925-12-31|1931-04-28|American Propeller Company|Propeller|
    US1927592A|1932-05-24|1933-09-19|Lambert Chandley William|Propeller hub|
    DE713187C|1936-11-07|1941-11-03|Siemens Schuckertwerke Akt Ges|Attachment for a fan wheel on its drive shaft|
    US2344266A|1941-06-27|1944-03-14|Reissner Hans|Aircraft propeller construction|
    BE470026A|1945-12-21|
    US2844303A|1952-08-27|1958-07-22|Nordisk Ventilator|Axial blowers or fans|
    GB826519A|1957-05-10|1960-01-13|Air Control Installations Ltd|Improvements in or relating to axial flow fans|
    CH363754A|1959-01-20|1962-08-15|Sulzer Ag|Blade attachment in an axial turbo machine|
    NL123379C|1963-11-01|
    US3324953A|1964-10-29|1967-06-13|Airscrew Weyroc Ltd|Fan rotors|
    US3452820A|1968-05-29|1969-07-01|Caterpillar Tractor Co|Reversible cooling fan|
    US3545884A|1968-09-12|1970-12-08|Buffalo Forge Co|Adjustable fan construction|
    GB1430596A|1972-07-06|1976-03-31|Rolls Royce|Multi-bladed fans|US4221541A|1977-02-28|1980-09-09|Axial International Aktiengesellschaft|Fan comprising a blade pitch control mechanism|
    US4187056A|1977-05-02|1980-02-05|Ecodyne Corporation|Fan blade assembly and coupling|
    US4256435A|1978-08-02|1981-03-17|Eckel Oliver C|Mounting support blocks for pivotal rotor of wind turbine|
    DK149694C|1983-10-07|1987-04-06|Nordisk Ventilator|axial flow|
    DE3464645D1|1984-09-27|1987-08-13|Siemens Ag|Rotor for an axial-flow ventilating fan having individually adjustable blades|
    DE19643760C1|1996-10-23|1997-12-11|Daimler Benz Ag|Holder for motor vehicle seat electric ventilation fan|
    US6386826B1|1999-09-23|2002-05-14|International Business Machines Corporation|Fan with self closing blades|
    JP3913550B2|2000-04-17|2007-05-09|ハウデン・パワー・アクティーゼルスカブ|Impeller for axial fan|
    US6682308B1|2002-08-01|2004-01-27|Kaz, Inc.|Fan with adjustable mount|
    NL1022084C2|2002-12-05|2004-06-08|Ventilatoren Sirocco Howden Bv|Rotor with flexible blades for e.g. fans, has blade stops formed by springs between hub and blades|
    DE102015216579A1|2015-08-31|2017-03-02|Ziehl-Abegg Se|Fan, fan and system with at least one fan|
    US10125795B2|2016-11-16|2018-11-13|Ya-Chi CHEN|Adjustable fan damping apparatus for exerciser|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US05/460,524|US3984194A|1974-04-12|1974-04-12|Axial flow fans|
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