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    • 1. 发明授权
    • Oil pump
    • 油泵
    • US07354253B2
    • 2008-04-08
    • US10516298
    • 2003-06-11
    • Kentaro YamauchiSatoshi KondoNobuyuki KawabataTakashi ImanishiHiromichi Suemoto
    • Kentaro YamauchiSatoshi KondoNobuyuki KawabataTakashi ImanishiHiromichi Suemoto
    • F04B49/00
    • F04C14/26F04C2/3446F04C14/223F04C15/062F05C2251/00
    • An oil pump includes: a rotor 3 for actuating a pump action to suck oil in a suction passage 24 from a suction port 27 to supply oil to a delivery passage by way of a delivery port 19; and a flow control valve for returning an excessive oil from the delivery passage to the suction passage 24 as a returning flow of oil by way of a bypass passage 29 when a flow amount of oil is excessive in the delivery passage. A corrosion-proof member 9 having corrosion resistance is disposed at the position which faces to the returning flow of oil in the inner wall surface of at least one of the suction passage 24 and the bypass passage 29. The corrosion-proof member 9 has a discontinuous shape (for example a V-shape or a U-shape) in a circumferrencial direction of center line P1 in a cross section which intersects the center line P1 at right angles.
    • 油泵包括:转子3,其用于致动泵动作,以从吸入口27吸入吸入通道24中的油,以通过输送口19将油供给到输送通道; 以及流量控制阀,用于当输送通道中油的流量过大时,通过旁通通道29将过量的油从输送通道返回到吸入通道24,作为油的返回流。 具有耐腐蚀性的防腐蚀构件9设置在与吸入通道24和旁通通道29中的至少一个的内壁面中的油的返回流相对的位置。防腐蚀构件9具有 在与中心线P 1成直角相交的横截面中心线P 1的圆周方向上的不连续形状(例如V形或U形)。
    • 3. 发明授权
    • Method of driving discharge lamp, driving device, and projector
    • 驱动放电灯,驱动装置和投影仪的方法
    • US08143802B2
    • 2012-03-27
    • US12393728
    • 2009-02-26
    • Takeshi TakezawaKentaro Yamauchi
    • Takeshi TakezawaKentaro Yamauchi
    • H05B41/16H05B41/36
    • H05B41/2928Y02B20/208
    • A method for driving a discharge lamp that supplies an AC current to a discharge lamp having a first electrode and a second electrode so as to produce discharge and to cause the discharge lamp to emit light includes the steps of, during a steady operation in which the AC current is supplied to the first electrode and the second electrode, when power of the same amount is fed to the first and second electrodes, and a tip portion of the first electrode becomes higher than a tip portion of the second electrode in temperature, changing the duty ratio of the AC current to be supplied between the first electrode and the second electrode in accordance with a predetermined pattern, and setting a current value when the first electrode operates as an anode during one cycle so as to be smaller than a current value when the second electrode operates as an anode during one cycle.
    • 一种用于驱动放电灯的方法,该放电灯向具有第一电极和第二电极的放电灯提供AC电流以便产生放电并使放电灯发光,包括以下步骤:在稳定操作期间, 当相同量的功率被供给到第一和第二电极时,AC电流被提供给第一电极和第二电极,并且第一电极的尖端部分的温度变得高于第二电极的尖端部分 根据预定图案在第一电极和第二电极之间提供的AC电流的占空比,并且当在一个周期期间第一电极作为阳极操作时设定电流值,使其小于电流值 当第二电极在一个周期期间作为阳极工作时。
    • 7. 发明授权
    • Discharge lamp starter, method for controlling the same, and projector
    • 放电灯起动器,控制方法及投影机
    • US08008868B2
    • 2011-08-30
    • US12404340
    • 2009-03-16
    • Kentaro Yamauchi
    • Kentaro Yamauchi
    • G05F1/00H05B37/02H05B39/04H05B41/36
    • H05B41/2886H05B41/3927Y02B20/202
    • In at least one embodiment of the disclosure a discharge lamp lighting apparatus includes a controller configured to control an AC conversion circuit to perform AC conversion control for controlling the timings at which a polarity of the discharge lamp driving AC current is reversed. The controller is configured to control the power control circuit to perform current control for controlling a magnitude of the DC current. The controller changes the accumulated energy supplied to each electrode of a discharge lamp in one cycle of the discharge lamp driving AC current in accordance with a periodic pattern. The periodic pattern includes a plurality of segmented periods during each of which the accumulated energy is maintained at a same level for a plurality of cycles of the discharge lamp driving AC current, and a level of the accumulated energy in at least two of the segmented periods differ from each other.
    • 在本公开的至少一个实施例中,放电灯点亮装置包括控制器,其被配置为控制AC转换电路以执行AC转换控制,以控制放电灯驱动AC电流的极性反转的定时。 控制器被配置为控制功率控制电路以执行用于控制DC电流的大小的电流控制。 控制器根据周期性图案在放电灯驱动AC电流的一个周期内改变提供给放电灯的每个电极的累积能量。 周期性图案包括多个分段周期,在每个分段周期期间,对于放电灯驱动AC电流的多个周期,累积能量保持在相同电平,并且在至少两个分段周期中的累积能量水平 彼此不同
    • 9. 发明申请
    • DISCHARGE LAMP LIGHTING DEVICE, CONTROL METHOD FOR THE SAME, AND PROJECTOR
    • 放电灯照明装置,其相关的控制方法和投影仪
    • US20090237625A1
    • 2009-09-24
    • US12405877
    • 2009-03-17
    • Kentaro Yamauchi
    • Kentaro Yamauchi
    • G03B21/20H05B41/16
    • G03B21/2026G03B21/2053G03B33/12H05B41/2928Y02B20/208
    • In at least one embodiment of the disclosure a discharge lamp lighting device includes a controller configured to control an AC conversion circuit to perform AC conversion control for controlling the timings at which a polarity of the discharge lamp driving AC current is reversed. The controller is configured to control the power control circuit to perform current control for controlling a current value of the DC current. The controller changes the cumulative energy supplied to each electrode of a discharge lamp in one cycle of the AC current for the discharge lamp driving in accordance with a cyclical pattern. The cyclical pattern includes a plurality of segmented periods during each of which the cumulative energy is maintained at a same level for a plurality of cycles of the AC current for the discharge lamp driving, and a level of the cumulative energy in at least two of the segmented periods differ from each other.
    • 在本公开的至少一个实施例中,放电灯点亮装置包括控制器,其被配置为控制AC转换电路以执行AC转换控制,以控制放电灯驱动AC电流的极性反转的定时。 控制器被配置为控制功率控制电路以执行用于控制DC电流的当前值的电流控制。 控制器根据循环模式改变在放电灯驱动的交流电流的一个周期内向放电灯的每个电极供应的累积能量。 循环模式包括多个分段周期,在每个分段周期期间,对于用于放电灯驱动的AC电流的多个周期,累积能量保持在相同的电平,并且至少两个中的累积能量的水平 分段期间彼此不同。