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    Integrated fan assembly with variable pitch blades
    41.
    发明授权
    Integrated fan assembly with variable pitch blades 失效
    具有可变桨距叶片的集成风扇组件

    公开(公告)号：US06109871A

    公开(公告)日：2000-08-29

    申请号：US829060

    申请日：1997-03-31

    Applicant: Chris Nelson ,  Dave Hennessy ,  Bradford Palmer

    Inventor： Chris Nelson ,  Dave Hennessy ,  Bradford Palmer

    IPC: F01P7/06 ,  F04D29/26 ,  F04D29/32 ,  F04D29/36 ,  G01B7/14 ,  G01P3/487 ,  F04D27/00

    CPC classification number: F04D29/362 ,  F01P7/06 ,  F04D29/263 ,  G01B7/14 ,  G01P3/487

    Abstract: A fan assembly (10) includes first and second housing sections (70, 72) which, when mated by a first set of fasteners, define a plurality of circumferentially spaced openings (162) that lead to an internal housing chamber (82). The fan assembly (10) also includes a plurality of blade units (140), each of which includes an integral support stem (142) having a journal portion (148) rotatably mounted within a respective one of the openings (162), an enlarged flange portion (144) and a radial post portion (138) rotatably supported by a hub member (106) within the internal chamber (82). Each blade unit (140) preferably has a thrust bearing (156), bushing sleeve (158) and fan blade (152) integrated with the support stem (142), with the fan blade (152) being preferably molded to the support stem (142) following positioning of the thrust bearing (156) and bushing sleeve (158) to form an integral component. The fan assembly (10) further includes an actuator member (112) that is movably supported within the internal housing chamber (82) and which is adapted to engage a pin (166) of the support stem (142) at a position offset from a rotational axis thereof to adjust the pitch of the fan blades (152). The fan assembly (10) is adapted to be attached to a drive device (12) with a portion (42) of the drive device (12) covering a first set of fasteners (78) such that the first and second housing sections (70, 72) can only be disassembled following detachment from the drive device (12). A sensing arrangement (58, 180) is also preferably provided to generate signals indicative of at least one of the pitch and rotating speed of the fan blades (152).

    Abstract translation: 风扇组件（10）包括第一和第二壳体部分（70,72），当第一组紧固件配合时，第一和第二壳体部分限定出多个周向间隔开的开口（162），其通向内部容纳室（82）。 风扇组件（10）还包括多个叶片单元（140），每个叶片单元包括具有可旋转地安装在相应的一个开口（162）内的轴颈部分（148）的整体支撑杆（142），放大 凸缘部分（144）和由内部腔室（82）内的轮毂构件（106）可旋转地支撑的径向柱部分（138）。 每个叶片单元（140）优选地具有与支撑杆（142）成一体的推力轴承（156），衬套套管（158）和风扇叶片（152），其中风扇叶片（152）优选地被模制到支撑杆 142）以及推力轴承（156）和衬套套（158）的定位之后形成一个整体部件。 风扇组件（10）还包括致动器构件（112），该致动器构件（112）可移动地支撑在内部容纳室（82）内，并且适于在支撑杆（142）的销钉（166） 旋转轴线以调节风扇叶片（152）的间距。 风扇组件（10）适于附接到驱动装置（12），其中驱动装置（12）的一部分（42）覆盖第一组紧固件（78），使得第一和第二壳体部分（70） ，72）只能在与驱动装置（12）分离之后被拆卸。 还优选地，提供感测装置（58,180）以产生指示风扇叶片（152）的俯仰和转速中的至少一个的信号。

    Fan blade with bends forming general blade curvature
    42.
    发明授权
    Fan blade with bends forming general blade curvature 失效
    风扇叶片具有弯曲形成一般叶片曲率

    公开(公告)号：US4177012A

    公开(公告)日：1979-12-04

    申请号：US886678

    申请日：1978-03-15

    Applicant: Herbert N. Charles

    Inventor： Herbert N. Charles

    IPC: F01P7/06 ,  F04D29/38

    CPC classification number: F01P7/06 ,  F04D29/382 ,  Y10S416/03

    Abstract: An automotive cooling fan having flexible, resilient blades which decamber with increasing rotational speed of the fan, the general curvature of the blades being formed by a multiplicity of spaced, generally radially extending bends in the blades; in preferred embodiments the blades have configuration resulting from said bends in which the general radius of blade curvature of the blades increases and the chord angle of the blades decreases from the blade roots to the blade tips.

    Abstract translation: 一种具有柔性弹性叶片的汽车冷却风扇，其随着风扇的转速增加而消失，叶片的大体曲率由叶片中多个间隔开的大致径向延伸的弯曲部形成; 在优选实施例中，叶片具有由所述弯曲产生的构造，其中叶片的叶片曲率的一般半径增加并且叶片的弦角从叶根减小到叶片尖端。

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