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    • 61. 发明授权
    • Oil free screw compressor operating at variable speeds and control method therefor
    • 无油螺杆压缩机以可变速度运行及其控制方法
    • US06561766B2
    • 2003-05-13
    • US09819999
    • 2001-03-29
    • Hitoshi NishimuraHiroshi Ohta
    • Hitoshi NishimuraHiroshi Ohta
    • F04B4906
    • F04C28/24F04C23/001F04C28/06F04C28/08F04C2240/403
    • An oil free screw compressor includes a low-pressure stage compressor body and a high-pressure stage compressor body. Power of a motor driven by an inverter is transmitted to the compressor bodies through gears. A low-pressure stage blow-off two-way valve is provided in a pipe branching off midway an air pipe connecting between the high-pressure stage compressor body and the low-pressure stage compressor body, and a high-pressure stage blow-off two-way valve is provided in a pipe branching off from a discharge air pipe provided on a discharge side of the high-pressure stage compressor body. During no-load operation, a controller gives a command to the inverter to make the rotational speed of the motor a set lower limit rotational speed, and also gives an open command to the low-pressure stage blow-off two-way valve.
    • 无油螺杆压缩机包括低压级压缩机体和高压级压缩机体。 由变频器驱动的电动机的功率通过齿轮传递到压缩机主体。 在高压级压缩机体和低压级压缩机体连接的空气管的中途分支的管道中设置有低压级吹出式二通阀,以及高压级吹出 在设置在高压级压缩机主体的排出侧的排气管上分支的管中设置有双向阀。 在空载运转时,控制器向变频器发出指令,使电动机的转速设定下限转速,并向低压级排放二通阀提供开启指令。
    • 63. 发明授权
    • Electronic component mounting apparatus
    • 电子元件安装装置
    • US06178621B2
    • 2001-01-30
    • US09029627
    • 1998-04-23
    • Satoshi ShidaWataru HiraiMuneyoshi FujiwaraHiroshi OhtaHirokazu Honkawa
    • Satoshi ShidaWataru HiraiMuneyoshi FujiwaraHiroshi OhtaHirokazu Honkawa
    • H05K330
    • H05K13/0409Y10T29/53091Y10T29/53178Y10T29/53191Y10T29/53261
    • By lightening the impact load to an electronic component and greatly promoting the load range, the adaptability to the electronic components is enhanced and the manned manual operation is eliminated, thereby improving the productivity and realizing unmanned operation. The vacuum-clamping nozzle unit comprises an automatically detachable vacuum-clamping nozzle (2) for vacuum-clamping the electronic component, a positioning section (3) for positioning the vacuum-clamping nozzle (2) in a rotating direction and a vertical direction, a pushing section (4) for urging said vacuum-clamping nozzle (2) downward by using fluid, a fluid pressure switching section for switching the urging force, a timing switching section for switching the timing of the urging force of said vacuum-clamping nozzle, and a pressure control section for controlling the load to a desired load. Switching the timing of the urging force can be made before or at the time of mounting the electronic component on an electronic circuit board.
    • 通过减轻对电子元件的冲击负荷并大大提高负载范围,提高了对电子元器件的适应性,消除了人工操作,从而提高了生产效率,实现了无人操作。 真空夹紧喷嘴单元包括用于真空夹紧电子部件的可自动拆卸的真空夹紧喷嘴(2),用于将真空夹紧喷嘴(2)沿旋转方向和垂直方向定位的定位部分(3) 用于通过使用流体向下推动所述真空夹紧喷嘴(2)的推动部分(4),用于切换所述推动力的流体压力切换部分,用于切换所述真空夹紧喷嘴的作用力的正时的定时切换部分 以及用于将负载控制到期望负载的压力控制部。 可以在将电子部件安装在电子电路板上之前或之前进行推压力的定时切换。
    • 65. 发明授权
    • Infrared microscope for analysis of a selected sample area
    • 红外显微镜用于分析选定的样品区域
    • US5754335A
    • 1998-05-19
    • US848499
    • 1997-05-08
    • Nobuo TakagiHiroshi OhtaTadashi Wachi
    • Nobuo TakagiHiroshi OhtaTadashi Wachi
    • G01N21/27G01J3/28G01N21/35G02B21/00H04N7/18
    • G01J3/28
    • Before a measurement for an infrared analysis of a sample is performed, a measurement area of the sample is set. In the measurement area setting mode, a camera takes the image of the whole sample, and the image is shown on a display. An image of an aperture is superimposed on the image of the sample in the display. When an operator uses a mouse connected to a controller of the infrared microscope to change the width of the image of the aperture on the display, an aperture signal generator generates an aperture signal corresponding to the width of the aperture image. An aperture image signal generator receives the aperture signal and generates an aperture image signal having the width. Thus the image of the sample superimposed on the image of the aperture in the display changes accordingly, by which the operator confirms the measurement area, i.e., the position and width of the aperture, in the sample. Since the image of the aperture is generated electronically in the present invention, no hardware such as expensive lenses or a precise mirror-moving mechanism is necessary.
    • 在对样品的红外分析进行测量之前,设定样品的测量区域。 在测量区域设定模式下,相机拍摄整个样本的图像,并将图像显示在显示屏上。 孔径的图像叠加在显示器中的样品的图像上。 当操作者使用连接到红外显微镜的控制器的鼠标来改变显示器上的孔径的图像的宽度时,孔径信号发生器产生对应于孔径图像的宽度的孔径信号。 孔径图像信号发生器接收孔径信号并产生具有宽度的孔径图像信号。 因此,叠加在显示器上的孔径的图像上的样本的图像相应地改变,由此操作者确认样本中的测量区域,即孔的位置和宽度。 由于在本发明中电子地生成孔径的图像,所以不需要诸如昂贵的透镜或精确的镜像移动机构的硬件。
    • 70. 发明授权
    • Apparatus for making diagnosis of valve device in turbine system
    • 用于在涡轮机系统中诊断阀装置的装置
    • US4523286A
    • 1985-06-11
    • US405350
    • 1982-08-05
    • Tsuguaki KogaHidesumi KuwashimaHidenori InoueHidetoshi HamaokaHiroshi Ohta
    • Tsuguaki KogaHidesumi KuwashimaHidenori InoueHidetoshi HamaokaHiroshi Ohta
    • F01D17/02F16K37/00
    • F01D17/02F16K37/0083F16K37/0091Y10T137/8158Y10T137/8242Y10T137/8326
    • A diagnostic apparatus for diagnosising of a valve device in a turbine system comprises at least one of a pressure sensor for sensing hydraulic pressure in a hydraulic cylinder for driving a valve body of the valve device and a position sensor for sensing the displacement of the valve body, and a processing device for processing the output signal from the above-mentioned at least one sensor. The processing device has an offset computing device which receives a signal representing the actual operating state of the valve device obtained on the basis of the output signal from the at least one sensor and a signal corresponding to a reference value obtained under the normal operating state of the valve device. The offset computing device is operable to compute the offset between the signals received thereto. A judging device is provided for judging as to whether or not there is a symptom of a sticking in the valve device, in accordance with the output signal from the offset computing device.
    • 用于诊断涡轮机系统中的阀装置的诊断装置包括用于感测用于驱动阀装置的阀体的液压缸中的液压的压力传感器和用于感测阀体的位移的位置传感器中的至少一个 以及用于处理来自上述至少一个传感器的输出信号的处理装置。 该处理装置具有偏移计算装置,该偏移计算装置接收表示基于来自至少一个传感器的输出信号获得的阀装置的实际操作状态的信号,以及对应于在正常操作状态下获得的参考值的信号 阀门装置。 偏移计算装置可操作以计算接收到的信号之间的偏移。 根据来自偏移计算装置的输出信号,提供判断装置,用于判断是否存在粘附在阀装置中的症状。