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公开(公告)号：US4396351A
公开(公告)日：1983-08-02
申请号：US218072
申请日：1980-12-19
CPC分类号： F04D29/326 , F01P5/06 , F04D29/38
摘要： An engine cooling fan driven by an engine and located in a shroud extending from a radiator to the engine including a hub having a cylindrical rear end portion for mounting the fan on the engine, a plurality of blades provided on the hub and a ring fixedly provided on tip portions of the blades and extending in an axial direction so as to fully encircle the tips of the blades and forming a radial clearance between the shroud and the ring, the ring including a rear end portion positioned axially rearwardly of the cylindrical rear end of the shroud and extending radially outwardly of the shroud thereby restricting air flow from the rear side of the fan into the radial clearance formed between the shroud and the ring.
摘要翻译： 发动机冷却风扇由发动机驱动并且位于从散热器延伸到发动机的护罩中，其包括具有用于将风扇安装在发动机上的圆柱形后端部的轮毂，设置在轮毂上的多个叶片和固定地设置的环 在叶片的尖端部分上并沿轴向方向延伸，以便完全环绕叶片的尖端并且在护罩和环之间形成径向间隙，该环包括位于圆柱形后端的轴向后方的后端部分 护罩并且延伸到护罩的径向外侧，从而限制从风扇后侧流入形成在护罩和环之间的径向间隙中的空气流。
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公开(公告)号：US4505641A
公开(公告)日：1985-03-19
申请号：US564361
申请日：1983-12-22
CPC分类号： F04D29/326 , F01P5/02
摘要： A cooling fan to be located between an internal combustion engine and a radiator and rotatingly driven from a rotational shaft of the engine. The fan includes a plurality of blade elements radially projecting from a boss portion and a cylindrical ring formed at the outer ends of the blade elements coaxially with the boss portion. In each blade element, a base line, which is drawn through a base point located on a chord of blade between leading and trailing edges of the blade element at a distance of 40% from the leading edge in percentage to the length of the chord, describes a straight or moderately curved line from the inner to the outer end of the blade element, which is inclined rotationally forward of a radial line passing through the base point at the inner end of the blade element. This fan construction produces air flows containing axial and radial components of velocity to increase the air flows through the radiator irrespective of the existence of the internal combustion engine on the downstream side of the fan. Maximum air flow is obtained by projecting the trailing edge of the outer end of each blade element from the trailing edge of the above-mentioned ring by a length corresponding to 1/3 of the chord length of the outer blade end.
摘要翻译： 一种冷却风扇，其位于内燃机和散热器之间并且从发动机的旋转轴旋转驱动。 风扇包括从凸起部分径向突出的多个叶片元件和形成在与凸起部分同轴的叶片元件的外端处的圆柱形环。 在每个叶片元件中，基线被设置在叶片元件的前缘和后缘之间的位于叶片弦上的基点，其距前缘的百分比与弦的长度成40％的距离， 描述了从叶片元件的内端到外端的直线或中等弯曲的线，其在叶片元件的内端处穿过基点的径向线的旋转前方倾斜。 该风扇结构产生包含轴向和径向分量的空气流，以增加通过散热器的空气流量，而不管风扇下游侧是否存在内燃机。 通过将每个叶片元件的外端的后缘从上述环的后缘突出相当于外刀片端的弦长的1/3的长度来获得最大气流。
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公开(公告)号：US4334824A
公开(公告)日：1982-06-15
申请号：US169667
申请日：1980-07-17
IPC分类号： F04D29/38
CPC分类号： F04D29/382
摘要： A flexible fan device includes a power driven boss and a plurality of fan blades, each secured on the boss at an attached angle. The fan blade has a root portion secured to the boss and a tip portion offset with respect to the root portion in the downstream direction so that the blade angle is decreased under the influence of centrifugal force in response to an increase in the rotating speed. The fan blade is formed to have an angle inclined in the direction of rotation of the boss.
摘要翻译： 柔性风扇装置包括动力驱动的凸台和多个风扇叶片，每个风扇叶片以固定的角度固定在凸台上。 风扇叶片具有固定到凸台的根部部分和在下游方向上相对于根部部分偏移的尖端部分，使得在离心力的影响下，响应于旋转速度的增加，叶片角度减小。 风扇叶片形成为在凸台的旋转方向上倾斜的角度。
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公开(公告)号：US4539943A
公开(公告)日：1985-09-10
申请号：US639224
申请日：1984-08-09
摘要： An engine cooling system has a cross-flow fan disposed transversely in a car body between a radiator and an engine having a rotatable shaft coupled to and driven by a hydraulic motor which is actuated by an engine-operated hydraulic pump. The hydraulic pump and the hydraulic motor are interconnected by supply and return passages, the supply passage having a directional control valve for selectively connecting the supply passage to the return passage in bypassing relation to the hydraulic motor to interrupt operation of the fan. A second directional control valve is connected parallel to the first-mentioned directional control valve for selectively connecting the supply passage to the return passage in bypassing relation to the hydraulic motor. Hydraulic cylinders are respectively controlled by these first and second directional control valves for respectively actuating a radiator shutter and a movable shroud. A fluid coupling is operatively connected between the hydraulic pump and the output shaft of an engine for controlling a maximum number of rpm of the hydraulic pump to thereby keep an amount of oil discharged from the hydraulic pump below a certain level when the engine rotates at a high speed.
摘要翻译： 发动机冷却系统具有在散热器和发动机之间横向设置在车体中的横流风扇，其具有联接到由发动机操作的液压泵致动的液压马达驱动的可旋转轴。 液压泵和液压马达通过供给和返回通道相互连接，供给通道具有方向控制阀，用于选择性地将供给通道连接到与液压马达旁通的返回通道，以中断风扇的运行。 第二方向控制阀平行于第一方向控制阀连接，以便以与液压马达旁路的方式选择性地将供给通道连接到返回通道。 液压缸分别由这些第一和第二方向控制阀控制，用于分别致动散热器挡板和可移动护罩。 液压联轴器可操作地连接在液压泵和发动机的输出轴之间，用于控制液压泵的最大转数，从而当发动机转速为一定时，将从液压泵排出的油量保持在一定水平以下 高速。
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公开(公告)号：US4909311A
公开(公告)日：1990-03-20
申请号：US192930
申请日：1988-05-12
申请人： Ryuji Nakamura , Hideki Nakayoshi , Masato Itakura , Atsushi Satomoto , Nobuyoshi Kozawa , Shunzo Tsuchikawa
发明人： Ryuji Nakamura , Hideki Nakayoshi , Masato Itakura , Atsushi Satomoto , Nobuyoshi Kozawa , Shunzo Tsuchikawa
CPC分类号： B60K11/04 , F01P11/10 , F28D1/05366 , F01P2005/025 , F01P2070/32 , F28D2001/0273 , F28D2021/0094 , F28F2250/08
摘要： A cylindrically-shaped engine cooler for automobiles comprises a pair of water tanks or main coolant tubes, a plurality of water tubes connecting the water tanks or main coolant tubes, a plurality of cooling fins and at least one cooling fans. The cylindrical engine cooler is disposed in a vehicle so that the axis line of the cooler crosses the traveling line of a vehicle so that the air resistance against vehicle travel becomes small. The water tanks or main coolant tube can be used as the shroud for accommodating the cooling fan, when they are annularly shaped and disposed at the end of the cylindrically cooler. Two cooling fans disposed at the both ends of the cylindrically-shaped cooler may have different air-blowing capacity each other.
摘要翻译： 用于汽车的圆柱形发动机冷却器包括一对水箱或主冷却剂管，连接水箱或主冷却剂管的多个水管，多个散热片和至少一个冷却风扇。 圆筒形发动机冷却器设置在车辆中，使得冷却器的轴线与车辆的行进线交叉，使得抵抗车辆行驶的空气阻力变小。 水箱或主冷却剂管可以用作容纳冷却风扇的护罩，当它们呈环形并设置在圆柱形冷却器的端部时。 设置在圆柱形冷却器两端的两个冷却风扇可以具有彼此不同的吹气能力。
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