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1. 发明授权

US08647051B2 High efficiency low-profile centrifugal fan 有权
标题翻译：高效率低调离心风机
公开(公告)号：US08647051B2
公开(公告)日：2014-02-11
申请号：US12876619
申请日：2010-09-07
申请人： John F. O'Connor , Jan Najman , Michael C. Brauer
发明人： John F. O'Connor , Jan Najman , Michael C. Brauer
IPC分类号： F04D29/30
CPC分类号： F04D29/2216 , F04D29/281 , F04D29/30 , F04D29/329 , F04D29/388
摘要： An impeller for a centrifugal fan includes a hub, impeller blades, and struts for supporting the blades in a circumferential array spaced apart from the hub. The number of struts can equal the number of blades, each strut extended from the hub to support two blades while each blade is supported by one strut nearer to its leading edge and another strut nearer to its trailing edge. Another arrangement features two struts per blade, with one of the struts coupled to the hub and a given blade, and the other strut coupled between the given blade and an adjacent blade. The struts are recessed inwardly from the leading and trailing edges to promote smoother air flow. The blades and struts are provided with aerodynamic thickness profiles to further improve air flow.
摘要翻译：用于离心风扇的叶轮包括轮毂，叶轮叶片和用于将叶片支撑在与轮毂间隔开的周向阵列中的支柱。支柱的数量可以等于叶片的数量，每个支柱从轮毂延伸以支撑两个叶片，而每个叶片由靠近其前缘的一个支柱支撑，而另一个支柱更靠近其后缘。另一个布置具有每个叶片两个支柱，其中一个支柱联接到轮毂和给定的叶片，而另一个支柱联接在给定的叶片和相邻的叶片之间。支柱从前缘和后缘向内凹入，以促进更平滑的气流。叶片和支柱设有空气动力学厚度廓线，以进一步改善气流。

2. 发明授权

US07347252B2 Centrifugal impeller 有权
标题翻译：离心式叶轮
公开(公告)号：US07347252B2
公开(公告)日：2008-03-25
申请号：US10978228
申请日：2004-10-28
申请人： John F. O'Connor, Jr.
发明人： John F. O'Connor, Jr.
IPC分类号： F24H3/02 , F28F7/00
CPC分类号： F04D29/582 , F04D25/0613 , F04D29/282
摘要： An improved centrifugal impeller having between 20 and 26 rearwardly curved blades blades, a ratio of blade annulus width to wheel radius between 0.31 and 0.37, and an inlet blade angle in the range 32° to 36° and a discharge blade angle in the range 36° to 40°.
摘要翻译：改进的离心式叶轮具有20到26个向后弯曲的叶片叶片之间，叶片间隙宽度与轮半径在0.31和0.37之间的比率以及在32°至36°范围内的入口叶片角度和在36°范围内的排出叶片角度 °至40°。

3. 发明授权

US07237327B2 Apparatus for mounting a plurality of magnet segments on a back ring 失效
标题翻译：用于将多个磁体段安装在后环上的装置
公开(公告)号：US07237327B2
公开(公告)日：2007-07-03
申请号：US11215920
申请日：2005-08-24
申请人： Gary L. Peresada , Carey L. Linkovich , Russel H. Marvin
发明人： Gary L. Peresada , Carey L. Linkovich , Russel H. Marvin
IPC分类号： H02K15/03
CPC分类号： H02K1/2786 , H02K15/03 , Y10T29/49009 , Y10T29/49012 , Y10T29/49075 , Y10T29/49078 , Y10T29/53143
摘要： A method and apparatus for assembling permanent magnet segments and a back ring wherein a fixture hold segments in circumaxially spaced relationship, adhesive is applied to the segments, externally from pressure sensitive adhesive tape and the fixture then expands to urge the segments into firm bonding engagement with the back ring.
摘要翻译：一种用于组装永磁体段和后环的方法和装置，其中固定件以环形间隔的关系保持段，粘合剂从压敏粘合带外部施加到段上，并且固定装置然后膨胀以促使段与背环。

4. 发明授权

US07692395B2 Extrapolation of back EMF signals in brushless DC motors 有权
标题翻译：无刷直流电机中反电动势信号的外推
公开(公告)号：US07692395B2
公开(公告)日：2010-04-06
申请号：US11941725
申请日：2007-11-16
申请人： Robert G. Brown
发明人： Robert G. Brown
IPC分类号： H03K5/00
CPC分类号： H02P6/182 , H02P2209/07
摘要： A controller is provided for operating a DC motor through a commutation circuit and for synchronizing the commutation circuit to motor position and speed by measuring back EMF voltages along commutation cycle steps during which the measured phase is not being driven. In connection with each such step, the back EMF voltage is measured at two points offset from the center of the step. The controller uses the measured voltages and their corresponding locations to locate the center point of the step through extrapolation. The motor can be analyzed for determining suitable locations for the measuring points.
摘要翻译：提供控制器，用于通过换向电路操作DC电动机，并且通过沿着换向循环步骤测量反向EMF电压，使换向电路与电动机位置和速度同步，在此期间测量相位不被驱动。结合每一个这样的步骤，反电动势电压是在偏离台阶中心的两个点测量的。控制器使用测量的电压及其对应的位置通过外推来定位台阶的中心点。可以分析电机以确定测量点的合适位置。

5. 发明授权

US07940020B2 Brushless DC motor with reduced current ripple 有权
标题翻译：无刷直流电机减小电流纹波
公开(公告)号：US07940020B2
公开(公告)日：2011-05-10
申请号：US11941426
申请日：2007-11-16
申请人： Robert G. Brown
发明人： Robert G. Brown
IPC分类号： H03K5/00
CPC分类号： H02P6/16 , H02P6/28 , H02P2209/07
摘要： A commutation circuit for driving a brushless DC motor is controlled according to a commutation cycle composed of alternating primary steps and transitional steps. The commutation circuit includes pairs of field effect transistors coupled in series between the high voltage and low voltage terminals of a DC power supply. Output terminals between each pair of transistors are individually coupled to the phases of a DC motor. A controller operates the commutation circuit to selectively set the phases at active and inactive states. The controller further employs a plurality of voltage control functions individually associated with the motor phases to selectively modulate the voltage applied to one of the phases during the active states, to provide transitional steps in the commutation cycle during which the applied voltage is modulated to reduce its magnitude with respect to the high voltage or the low voltage.
摘要翻译：根据由交替的主步骤和过渡步骤组成的换向循环来控制用于驱动无刷直流电动机的换向电路。换向电路包括串联耦合在直流电源的高电压和低电压端子之间的一对场效应晶体管。每对晶体管之间的输出端子分别耦合到直流电动机的相位。控制器操作换向电路以选择性地将相位设置为有功和非活动状态。控制器进一步采用与电动机相位分别相关联的多个电压控制功能，以选择性地调制在有效状态期间施加到一相中的电压，以在转换周期中提供过渡步骤，在该循环期间施加的电压被调制以减少其相对于高电压或低电压的幅度。

6. 发明授权

US07859153B2 Device and method for mounting electric motor stators 有权
标题翻译：用于安装电动机定子的装置和方法
公开(公告)号：US07859153B2
公开(公告)日：2010-12-28
申请号：US12259180
申请日：2008-10-27
申请人： Robert A. Hoyt , David A. Curtis
发明人： Robert A. Hoyt , David A. Curtis
IPC分类号： H02K5/00 , H02K15/04
CPC分类号： H02K5/1732 , F16C35/063 , H02K1/185 , H02K5/15 , H02K15/02 , Y02E20/14 , Y10T29/49009
摘要： A motor stator mounting device includes a plastic motor housing having a cylindrical housing section for receiving the stator. Longitudinal ribs along an inside surface of the housing section are inclined to converge gradually in a distal direction, thus tending to center a stator inserted distally into the housing section. An annular stator retaining member includes a plurality of distally extending centering features. Outside surfaces of the centering features interact with an interior surface of the housing section to center the retaining member as it is inserted distally. Inside surfaces of the centering features interact with a proximal region of a previously inserted stator, such that distal insertion of the retaining member both axially positions and radially centers the stator relative to the cylindrical housing. The retaining member is secured to the housing with a series of sonic welds to positionally fix the stator inside the housing.
摘要翻译：电动机定子安装装置包括具有用于接收定子的圆柱形容纳部分的塑料电动机壳体。沿着壳体部分的内表面的纵向肋倾斜以在远端方向上逐渐会聚，从而倾向于使定位在远端插入到壳体部分中。环形定子保持构件包括多个向远侧延伸的定中心特征。中心特征的外表面与壳体部分的内表面相互作用，以使得保持构件在其向远侧插入时居中。定心特征的内表面与先前插入的定子的近侧区域相互作用，使得保持构件的远端插入轴向定位并且相对于圆柱形壳体径向居中定子。保持构件通过一系列声波焊接固定到壳体上，以将定子定位在壳体内。

7. 发明授权

US07777436B2 Sensorless drive for unipolar three phase brushless DC motors 有权
标题翻译：用于单极三相无刷直流电机的无传感器驱动
公开(公告)号：US07777436B2
公开(公告)日：2010-08-17
申请号：US12172789
申请日：2008-07-14
申请人： Robert G. Brown , Ashit Kumar Das
发明人： Robert G. Brown , Ashit Kumar Das
IPC分类号： H02P27/04
CPC分类号： H02P6/182 , H02P2209/07
摘要： A system for controlling a trapezoidally (square wave) driven DC motor includes a unipolar commutation circuit coupled between a DC power supply and a brushless DC motor. The motor has three phases formed by respective stator windings coupled at respective proximal ends to a common node and having respective opposite ends remote from the common node. The commutation circuit drives the motor according to a commutation cycle including three primary steps. During each primary step, one of the phases is driven while the other two phases are not driven. Voltages at the remote ends of the undriven phases are sensed, and timing signals are generated at points where the voltages coincide. The timing signals are used to determine motor position and speed, and to synchronize the commutation cycle with motor position and speed. In one embodiment, the commutation cycle includes transitional steps between the primary steps for smoother operation. The system is compatible with high side and low side switching configurations.
摘要翻译：用于控制梯形（方波）驱动的直流电动机的系统包括耦合在直流电源和无刷直流电动机之间的单极换向电路。马达具有由相应的定子绕组形成的三相，其相应的近端连接到公共节点并具有远离公共节点的相应的相对端。换向电路根据包括三个主要步骤的换向循环驱动电动机。在每个主要步骤期间，驱动其中一个阶段，而不驱动其他两个阶段。感测未驱动相位的远端的电压，并且在电压重合的点产生定时信号。定时信号用于确定电机位置和速度，并使换向循环与电机位置和速度同步。在一个实施例中，换向循环包括用于平滑操作的主要步骤之间的过渡步骤。该系统兼容高端和低端交换配置。

8. 发明授权

US07481108B2 Rotatable member with an annular groove for dynamic balancing during rotation 有权
标题翻译：旋转构件具有环形槽，用于在旋转期间动态平衡
公开(公告)号：US07481108B2
公开(公告)日：2009-01-27
申请号：US11923102
申请日：2007-10-24
申请人： Drew M. Rocky , John F. O'Connor, Jr. , Russel H. Marvin
发明人： Drew M. Rocky , John F. O'Connor, Jr. , Russel H. Marvin
IPC分类号： G01M1/32
CPC分类号： F16F15/32 , Y10T74/2109 , Y10T74/2111 , Y10T74/2121
摘要： A method is provided for balancing a rotating member having an annular balancing groove which is configured to receive and retain a balancing projectile. The method includes determining a circumaxial imbalance location, and firing a balancing projectile in timed relationship with the rotation of the member so that the balancing projectile enters the groove at the imbalance location. Such steps are repeated as required to cure additional points of imbalance.
摘要翻译：提供了一种用于平衡具有环形平衡槽的旋转构件的方法，所述环形平衡槽被构造成接收和保持平衡射弹。该方法包括确定圆周不平衡位置，并且以与构件的旋转成时间关系的方式发射平衡射弹，使得平衡射弹进入不平衡位置处的凹槽。根据需要重复这些步骤以治愈额外的不平衡点。

9. 发明授权

US07350283B2 Method for making rotor for permanent magnet electric machine 失效
标题翻译：永磁电机转子方法
公开(公告)号：US07350283B2
公开(公告)日：2008-04-01
申请号：US10854447
申请日：2004-05-26
申请人： Bumsuk Won , Russel H. Marvin , Gary Peresada
发明人： Bumsuk Won , Russel H. Marvin , Gary Peresada
IPC分类号： H02K15/02 , H02K15/10
CPC分类号： H02K15/03 , F04D25/064 , F05D2300/43 , H02K1/2786 , Y10T29/49009 , Y10T29/49012 , Y10T29/49076 , Y10T29/4981 , Y10T29/49879
摘要： A method for making a rotor for a permanent magnet electric motor comprising the steps of providing an annular permanent magnet and an annular back-up member. Affixing the magnet to the inner surface of the back-up member in an un-magnetized condition and overmolding both in an injection molding process while controlling the flow of the molten plastic so as to cause the plastic to engage the opposite sides of the magnet at substantially the same time resulting in a knit line intermediate the magnet sides on the inner surface of the magnet. Magnetizing the magnet.
摘要翻译：一种用于制造用于永磁电动机的转子的方法，包括提供环形永磁体和环形支撑构件的步骤。将磁体以非磁化状态固定在支撑构件的内表面上，并且在注塑成型过程中二者均包覆成型，同时控制熔融塑料的流动，从而使塑料与磁体的相对侧接合基本上相同的时间导致编织线在磁体内表面上的磁体侧面之间。磁化磁化。

10. 发明授权

US07190564B2 Snubber circuit 失效
标题翻译：缓冲电路
公开(公告)号：US07190564B2
公开(公告)日：2007-03-13
申请号：US10956913
申请日：2004-09-30
申请人： Haroon I. Yunus
发明人： Haroon I. Yunus
IPC分类号： H02H3/20
CPC分类号： H02M1/34 , H02M3/335 , H02M2001/348 , H03K17/08142 , H03K17/162
摘要： A snubber circuit for use with an integrated power supply control circuit incorporating a transformer and a lateral power MOSFET on a single silicon chip. A capacitor is provided in circuit with the MOSFET and first resistor and diode are in series with each other and the capacitor. A second resistor and diode are also in series with each other and the capacitor. The diodes provide for first current flow in one and an opposite direction and the resistors provide first and second levels of resistance respectively for damping and turn on.
摘要翻译：一种缓冲电路，用于在单个硅芯片上并入有变压器和横向功率MOSFET的集成电源控制电路。在MOSFET的电路中提供电容器，并且第一电阻器和二极管彼此串联并且电容器。第二个电阻和二极管也彼此串联并且电容器。二极管以一个和相反的方向提供第一个电流，电阻分别为阻尼和导通提供第一和第二电平。

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