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公开(公告)号：US06648511B2
公开(公告)日：2003-11-18
申请号：US09899311
申请日：2001-07-05
IPC分类号： F16C2304
CPC分类号： F16C23/045 , F16C35/02 , H02K5/1672
摘要： A bearing system and journal which may incorporate either a sleeve or a ball bearing. The system includes a bearing journal having a sleeve bearing portion and a ball bearing portion. When a sleeve bearing is used in the system, a first end of the sleeve bearing is supported in the sleeve bearing portion of the journal, and a second end of the sleeve bearing is supported by a finger spring. The sleeve bearing and finger spring are retained within the journal by an end cap, which is press-fit into the ball bearing portion of the journal. When a ball bearing is used in the system, the ball bearing may be press-fit directly into the ball bearing portion of the bearing journal, or press-fit into a spacer, which is press-fit into the ball bearing portion of the bearing journal.
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公开(公告)号：US08579602B1
公开(公告)日：2013-11-12
申请号：US13374255
申请日：2011-12-19
IPC分类号： F04D29/60
CPC分类号： F04D29/646 , F04D29/542
摘要： An exhaust fan has an annular exhaust duct, a fan wheel, and a drive motor inside the core of the exhaust duct, and not inside the annular passage for the exhaust fluid. The exhaust duct has a tubular window frame extending between the inner and outer walls of the exhaust duct and creating service windows for a worker to reach in an de-couple the driver motor from both a bracket for its mount and also from the fan wheel. Temporary locking mechanisms actuated from reaching through the service windows removably hold the fan wheel to the exhaust duct while the drive motor is de-coupled and removed. The exhaust fan further includes self-centering mechanical connections between the drive motor and fan wheel so that the fan wheel does not have to be removed to be re-balanced.
摘要翻译： 排风扇在排气管的芯部内部具有环形排气管，风扇轮和驱动电动机，而不在用于废气流体的环形通道内。 排气管道具有在排气管道的内壁和外壁之间延伸的管状窗框，并且为工人提供服务窗口，以便从用于其安装的支架和风扇轮两者中分离驱动器电动机。 在驱动马达被拆卸和拆卸的同时，通过服务窗口致动的临时锁定机构可拆卸地将风扇轮保持在排气管道上。 排风扇还包括驱动马达和风扇叶轮之间的自定心机械连接，使得风扇叶轮不必被移除以重新平衡。
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公开(公告)号：US10989206B1
公开(公告)日：2021-04-27
申请号：US15865839
申请日：2018-01-09
申请人： Jeffery F. Kallenberger , James L. E. Meats , William S. Hohulin , Robert A. Valbracht , Rickey W. Jennings
发明人： Jeffery F. Kallenberger , James L. E. Meats , William S. Hohulin , Robert A. Valbracht , Rickey W. Jennings
摘要： A fan control system has a fan duct, a fan mounted in the duct, an electronic commutator (EC) motor for driving the fan, and a control system hub for controlling the EC motor. A pressure differential sensing system is mounted in association with duct and feeding a pressure differential signal to the control system hub. An input device mounted on the control system hub for scaling an output signal from a low percent extreme to a high percent extreme and sends that output signal to the EC motor. Wherein the control system hub speeds, slows or switches OFF the EC motor according to the pressure differential signal except that the input device sets a speed limit ceiling on the EC motor.
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公开(公告)号：US08052386B1
公开(公告)日：2011-11-08
申请号：US12655348
申请日：2009-12-29
IPC分类号： F04D29/28
CPC分类号： F04D25/08 , F04D29/281 , F04D29/30
摘要： A mixed flow fan wheel has a convex hub, an axially-spaced away concave annular shroud, and a plurality of angularly distributed blades extending between and interconnecting the hub and shroud, all which cooperatively define a plurality of inter-blade flow channels. Each has a pressure surface and spaced suction surface extending not only between spaced inlet and discharge edges but also, crosswise thereto, spaced hub-side and shroud-side edges. Each discharge edge is convex relative a center of geometry of the blade therefor. Each inter-blade flow channel originates in a generally rectangular shape between flanking inlet edges and terminates in another generally rectangular shape between flanking discharge edges, with a procession of gradations of generally rectangular shapes forming a progressive transition therebetween. Moreover, each inter-blade flow channel twists or corkscrews from inlet thereof to the discharge.
摘要翻译： 混流风扇叶轮具有凸形轮毂，轴向间隔开的凹形环形护罩，以及在毂和护罩之间延伸并互连的多个角度分布的叶片，所有叶片协同地限定多个叶片间流动通道。 每个具有压力表面和间隔开的吸力表面，其不仅在间隔开的入口和排出边缘之间，而且与其横向延伸，间隔开的毂侧和护罩侧边缘。 每个排出边缘相对于其叶片的几何形状的中心是凸的。 每个叶片间流动通道起始于侧面入口边缘之间的大致矩形形状，并且在侧向排出边缘之间终止于另一个大致矩形形状，其中大致矩形形状的渐变过程在其间形成渐进转变。 此外，每个叶片间流动通道从其入口扭转或开瓶至排出口。
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