公开(公告)号：US07311139B2

公开(公告)日：2007-12-25

申请号：US11201989

申请日：2005-08-11

申请人： Robert D. Kern ,  Guoming Wu

发明人： Robert D. Kern ,  Guoming Wu

IPC分类号： F28F3/04

CPC分类号： F28D1/0333 ,  F28D2021/0089 ,  F28F3/04 ,  F28F2280/04 ,  Y10S165/916

摘要： A heat exchanger is provided for dissipating heat from a fluid. The heat exchanger includes a plurality of stacked pairs of plates. Each pair of plates includes a first plate and a second plate. The first plate extends along a first axis and has first and second sides. The first side of the first plate has a generally sinusoidal recess therein that extends along the first axis. The second plate extends along a second axis and has first and second sides. The first side of the second plate has a generally sinusoidal recess therein that extends along the second axis and that is out of phase with the sinusoidal recesses in the first side of the first plate. The first side of the first plate and the first side of the second plate form a mating relationship with each other such that the recess in the first side of the first plate communicates with the recess in the first side of the second plate at a plurality of axially spaced locations.

公开(公告)号：USD479532S1

公开(公告)日：2003-09-09

申请号：US29172379

申请日：2002-12-10

申请人： Robert D. Kern ,  Gerald C. Ruehlow ,  Guoming Wu

设计人： Robert D. Kern ,  Gerald C. Ruehlow ,  Guoming Wu

公开(公告)号：USD471207S1

公开(公告)日：2003-03-04

申请号：US29147632

申请日：2001-09-04

申请人： Robert D. Kern ,  Gerald C. Ruehlow ,  Guoming Wu

设计人： Robert D. Kern ,  Gerald C. Ruehlow ,  Guoming Wu

公开(公告)号：US07341044B1

公开(公告)日：2008-03-11

申请号：US11622278

申请日：2007-01-11

申请人： Don R. Bayer ,  Christine A. Richardson ,  Guoming Wu ,  Robert D. Kern

发明人： Don R. Bayer ,  Christine A. Richardson ,  Guoming Wu ,  Robert D. Kern

IPC分类号： F02D9/00

CPC分类号： F02M1/10 ,  F02D9/02 ,  F02M13/04

摘要： A method and device is provided for regulating the air-fuel mixture provided to an engine of a stand-by electrical generator during the exercise thereof. The engine is exercised at a predetermined speed less than the normal operating speed of the engine and each cylinder receives an air-fuel mixture having an air component and a fuel component. To exercise the engine, the air component and the fuel component in the air-fuel mixture provided to the engine is reduced. In addition, the volume of the air-fuel mixture provided to each cylinder of the engine is balanced.

摘要翻译： 提供了一种方法和装置，用于在运动期间调节提供给备用发电机的发动机的空气 - 燃料混合物。 发动机以比发动机的正常操作速度小的预定速度行使，并且每个气缸接收具有空气部件和燃料部件的空气 - 燃料混合物。 为了运动发动机，提供给发动机的空气 - 燃料混合物中的空气部件和燃料部件减少。 此外，提供给发动机的每个气缸的空气 - 燃料混合物的体积是平衡的。

公开(公告)号：USD479721S1

公开(公告)日：2003-09-16

申请号：US29172377

申请日：2002-12-10

申请人： Robert D. Kern ,  Gerald C. Ruehlow ,  Guoming Wu

设计人： Robert D. Kern ,  Gerald C. Ruehlow ,  Guoming Wu

公开(公告)号：USD479244S1

公开(公告)日：2003-09-02

申请号：US29172378

申请日：2002-12-10

申请人： Robert D. Kern ,  Gerald C. Ruehlow ,  Guoming Wu

设计人： Robert D. Kern ,  Gerald C. Ruehlow ,  Guoming Wu

公开(公告)号：US08587283B2

公开(公告)日：2013-11-19

申请号：US13090996

申请日：2011-04-20

申请人： Guoming Wu

发明人： Guoming Wu

IPC分类号： G05F1/00

CPC分类号： H02M3/156 ,  H02M2001/0035 ,  Y02B70/16

摘要： DC-DC voltage converter systems are provided in which a switching voltage converter is arranged with an inductor to switch first and second currents with duty cycles D and D′ determined by an error voltage Verr to thereby maintain an output voltage Vout. A transconductance amplifier having an amplifier output provides the error voltage Verr in response to the output voltage and a reference voltage Vref. A ripple current Irpl is provided to the amplifier output in response to the difference between the error voltage Verr and a clamp voltage Vclmp. Finally, a current comparator generates a skip signal to turn off the first and second currents in response to a selected threshold of the ripple current. In this process, the ripple current Irpl substantially clamps the error voltage Verr to the clamp voltage Vclmp. Preferably, the current comparator is arranged to provide the skip signal in response to the selected first threshold of the ripple current Irpl and retract the skip signal in response to a selected second threshold of the ripple current Irpl.

摘要翻译： 提供DC-DC电压转换器系统，其中开关电压转换器布置有电感器以切换由误差电压Verr确定的占空比D和D'的第一和第二电流，从而保持输出电压Vout。 具有放大器输出的跨导放大器响应于输出电压和参考电压Vref提供误差电压Verr。 响应于误差电压Verr和钳位电压Vclmp之间的差异，纹波电流Irpl被提供给放大器输出。 最后，电流比较器产生跳跃信号，以响应所选择的纹波电流的阈值来关断第一和第二电流。 在该过程中，纹波电流Irp1将误差电压Verr基本上钳位到钳位电压Vclmp。 优选地，电流比较器被布置成响应于纹波电流Irpl的所选择的第一阈值提供跳跃信号，并且响应于纹波电流Irpl的所选择的第二阈值而缩回跳跃信号。

公开(公告)号：US08552706B2

公开(公告)日：2013-10-08

申请号：US13074984

申请日：2011-03-29

申请人： Guoming Wu

发明人： Guoming Wu

IPC分类号： G05F1/00

CPC分类号： H02M3/156 ,  H02M3/1588 ,  H02M2001/0025 ,  Y02B70/1466

摘要： DC-DC voltage converter structures and methods are provided that employ first and second transistors which are switched to control currents through an inductor and a capacitor to thereby provide an output voltage substantially equal to a predetermined reference voltage. Preferably included is a voltage feedback loop in which an error voltage is fed back to a loop comparator and further included is a current feedback loop that provides to the comparator a first voltage ramp whose amplitude is proportional to the amplitude of the converter's input current. The output signal of the comparator sets the duty cycles of the first and second transistors. In each converter period, the first and second transistors of the voltage converter respectively control, through the inductor, a first current with a rising slope and a second current with a falling slope. Finally, converter stability is enhanced by providing a second voltage ramp having a slope related to a fraction (e.g., ½) of the falling slope and then comparing the error voltage of the voltage feedback loop to the sum of the first and second voltage ramps.

摘要翻译： 提供DC-DC电压转换器结构和方法，其采用第一和第二晶体管，其被切换以通过电感器和电容器控制电流，从而提供基本上等于预定参考电压的输出电压。 优选地包括电压反馈回路，其中误差电压被反馈到回路比较器，并且还包括电流反馈回路，该电流反馈回路向幅度与转换器的输入电流的幅度成比例的第一电压斜坡提供第一电压斜坡。 比较器的输出信号设置第一和第二晶体管的占空比。 在每个转换器周期中，电压转换器的第一和第二晶体管分别通过电感器控制具有上升斜率的第一电流和具有下降斜率的第二电流。 最后，通过提供具有与下降斜率的分数（例如，1/2）相关的斜率的第二电压斜坡，然后将电压反馈回路的误差电压与第一和第二电压斜坡之和进行比较来增强转换器的稳定性。

公开(公告)号：US08614567B2

公开(公告)日：2013-12-24

申请号：US12985178

申请日：2011-01-05

申请人： Guoming Wu

发明人： Guoming Wu

IPC分类号： G05F1/565

CPC分类号： H03K17/6871 ,  H02M3/1588 ,  H03K2217/0063 ,  H03K2217/0081 ,  Y02B70/1466

摘要： Voltage regulator structures and methods embodiments are provided which employ a high-side N-type switching transistor to thereby enhance system efficiency and also reduce the die area required by these regulator structures. This structure and its advantages, however, require a gate drive signal higher than the input voltage of the voltage regulator. The embodiments resolve this need with a bias capacitor in a bootstrapped arrangement and a control loop arranged to maintain a bias voltage across the capacitor sufficient to always insure rapid switching of the high-side switching transistor during a pulse-width modulation (PWM) operational mode. The embodiments further include a second control loop arranged to insure sufficient voltage across the capacitor during a pulse-frequency modulation (PFM) operational mode.

摘要翻译： 提供了采用高侧N型开关晶体管从而提高系统效率并减小这些调节器结构所需的管芯面积的电压调节器结构和方法实施例。 然而，这种结构及其优点需要栅极驱动信号高于电压调节器的输入电压。 这些实施例通过自举布置中的偏置电容器和布置成在电容器两端保持偏置电压足以在脉宽调制（PWM）操作模式期间始终确保高侧开关晶体管的快速切换的情况下解决这一需要 。 实施例还包括第二控制回路，其布置成在脉冲频率调制（PFM）操作模式期间确保电容器两端的足够的电压。

公开(公告)号：US20070034362A1

公开(公告)日：2007-02-15

申请号：US11201989

申请日：2005-08-11

申请人： Robert Kern ,  Guoming Wu

发明人： Robert Kern ,  Guoming Wu

IPC分类号： F28D1/02

CPC分类号： F28D1/0333 ,  F28D2021/0089 ,  F28F3/04 ,  F28F2280/04 ,  Y10S165/916

摘要： A heat exchanger is provided for dissipating heat from a fluid. The heat exchanger includes a plurality of stacked pairs of plates. Each pair of plates includes a first plate and a second plate. The first plate extends along a first axis and has first and second sides. The first side of the first plate has a generally sinusoidal recess therein that extends along the first axis. The second plate extends along a second axis and has first and second sides. The first side of the second plate has a generally sinusoidal recess therein that extends along the second axis and that is out of phase with the sinusoidal recesses in the first side of the first plate. The first side of the first plate and the first side of the second plate form a mating relationship with each other such that the recess in the first side of the first plate communicates with the recess in the first side of the second plate at a plurality of axially spaced locations.

摘要翻译： 提供了一种用于从流体中散热的热交换器。 热交换器包括多个堆叠的板对。 每对板包括第一板和第二板。 第一板沿着第一轴线延伸并且具有第一和第二侧面。 第一板的第一侧在其中具有沿着第一轴线延伸的大致正弦的凹槽。 第二板沿着第二轴线延伸并具有第一和第二侧面。 第二板的第一侧具有大致正弦的凹槽，其中沿着第二轴线延伸并且与第一板的第一侧中的正弦凹槽不同相。 第一板的第一侧和第二板的第一侧彼此形成配合关系，使得第一板的第一侧中的凹槽与第二板的第一侧中的凹部以多个 轴向间隔开的位置。