Method of growing crystal
    1.
    发明授权
    Method of growing crystal 失效
    生长晶体的方法

    公开(公告)号:US5402747A

    公开(公告)日:1995-04-04

    申请号:US71102

    申请日:1993-06-04

    CPC分类号: C30B15/30 C30B15/04 C30B15/20

    摘要: A single crystal material is filled in a crucible, and the whole of the single crystal material is melted to contain doping impurities. A solid layer coagulated upward from the bottom of the crucible is rendered to coexist with a melted layer over the solid layer. The solid layer is melted from the upper side thereof while pulling the single crystal from the melted layer. The ratio by weight between the solid layer and the single crystal material at the start of pulling is adjusted, together with the ratio by weight between the grown single crystal and the melting solid layer. The single crystal is thus grown while changing the volume of the melted layer.

    摘要翻译: 将单晶材料填充在坩埚中,并且将整个单晶材料熔化以含有掺杂杂质。 从坩埚底部向上凝结的固体层与固体层上的熔融层共存。 从熔融层拉出单晶时,从其上侧熔化固体层。 调整开始拉伸时固体层与单晶材料之间的重量比,以及生长的单晶和熔融固体层之间的重量比。 因此在改变熔融层的体积的同时生长单晶。

    Apparatus and method of growing single crystal
    2.
    发明授权
    Apparatus and method of growing single crystal 失效
    生长单晶的装置和方法

    公开(公告)号:US5363796A

    公开(公告)日:1994-11-15

    申请号:US837202

    申请日:1992-02-18

    IPC分类号: C30B15/00 C30B15/14 C30B15/10

    摘要: An apparatus for growing a single crystal having a crucible, two heaters arranged at the outside of the crucible and along the vertical direction, a heat shield placed at the outside of the heaters, a radiation shield for shielding the single crystal from the radiation heat, and an upper heat shield for preventing the upward heat, transfer of the heaters. In the apparatus, a melted layer and solid layer of raw material are formed in the upper and lower portions of the crucible, respectively. While melting the solid layer, the single crystal is pulled up. The lower portion of the heat shield is thinner than the upper portion. The ratio of the height to the diameter of the crucible is 0.85 or more. The melting amount of the solid layer is controlled in the pulling process according to the non-segregation condition in the variable-thickness melted layer method. The oxygen concentration of the pulled single crystal is controlled in the pulling process by adjusting the rotation speed and rotation direction of the crucible.

    摘要翻译: 一种用于生长具有坩埚的单晶的装置,设置在坩埚外部并沿着垂直方向的两个加热器,设置在加热器外部的隔热罩,用于将单晶屏蔽在放射线上的辐射屏蔽, 以及用于防止加热器的向上热传递的上部隔热罩。 在该装置中,在坩埚的上部和下部分别形成熔融层和原料固体层。 在熔化固体层时,单晶被拉起。 隔热罩的下部比上部薄。 坩埚的高度与直径之比为0.85以上。 根据可变厚度熔融层法中的非偏析条件,在拉伸过程中控制固体层的熔融量。 通过调节坩埚的旋转速度和旋转方向,在牵引过程中控制拉出的单晶的氧浓度。

    Electromagnetic stirrer
    3.
    发明授权
    Electromagnetic stirrer 失效
    电磁搅拌器

    公开(公告)号:US4590989A

    公开(公告)日:1986-05-27

    申请号:US639079

    申请日:1984-08-09

    申请人: Sumio Kobayashi

    发明人: Sumio Kobayashi

    摘要: An electromagnetic stirrer of linear induction motor type for a continuous casting machine, whose coils are arranged to differ a distance between poles of theeven function components of the travelling wave current distribution with respect to the center thereof from that of the odd function components so that a larger electromagnetic force is generated, thereby eliminating the internal defects, such as macro-segregation or center porosity, and improving quality of the ingot. Also, the electromagnetic stirrer, even when attached to a small-sized mold or a mold of small aspect ratio, demonstrates the sufficient effect.

    摘要翻译: 一种用于连续铸造机的线性感应电动机类型的电磁搅拌器,其线圈布置成使行波电流分布的两个功能分量的极点相对于奇数功能分量的中心距离不同, 产生较大的电磁力,从而消除诸如宏观偏析或中心孔隙度的内部缺陷,并提高锭的质量。 此外,电磁搅拌器即使连接到小尺寸模具或小长径比的模具也显示出足够的效果。

    Gate controlling circuit for a thyristor converter
    5.
    发明授权
    Gate controlling circuit for a thyristor converter 失效
    闸流控制电路用于晶闸管转换器

    公开(公告)号:US4325114A

    公开(公告)日:1982-04-13

    申请号:US131661

    申请日:1980-03-19

    CPC分类号: H02M1/08

    摘要: A gate controlling circuit for a thyristor converter having a forward/reverse bias voltage detecting circuit connected between the anode and the cathode of one of a plurality of serially connected thyristors in a thyristor arm of the converter for determining whether the thyristor is forward or reverse biased. The output of the forward/reverse bias voltage detector is utilized to control the gate control signals supplied to the thyristors in the thyristor arm.

    摘要翻译: 一种用于晶闸管转换器的栅极控制电路,其具有正向/反向偏置电压检测电路,其连接在转换器的晶闸管臂中的多个串联连接的晶闸管之一的阳极和阴极之间,用于确定晶闸管是正向还是反向偏置 。 正向/反向偏置电压检测器的输出用于控制提供给晶闸管臂中的晶闸管的栅极控制信号。

    Gate controlling circuit for a thyristor converter
    6.
    发明授权
    Gate controlling circuit for a thyristor converter 失效
    闸流控制电路用于晶闸管转换器

    公开(公告)号:US4313156A

    公开(公告)日:1982-01-26

    申请号:US82339

    申请日:1979-10-05

    CPC分类号: H02M1/092 H02M1/08

    摘要: A gate controlling circuit for a thyristor converter having an inverse bias voltage detecting circuit which detects the inverse bias voltage across a thyristor and is connected between the anode and cathode of serially connected thyristors in a thyristor valve. A gate signal to all of the thyristors is supplied when the output of the inverse bias voltage detecting circuit drops or becomes zero after all of the thyristors are turned off.

    摘要翻译: 一种用于晶闸管转换器的栅极控制电路,具有反向偏置电压检测电路,其检测晶闸管两端的反向偏置电压,并连接在晶闸管阀中串联连接的晶闸管的阳极和阴极之间。 当所有晶闸管都断开时,反向偏置电压检测电路的输出下降或变为零时,提供所有晶闸管的栅极信号。

    Method and apparatus for detecting damage of blast furnace inside wall
repairing materials
    7.
    发明授权
    Method and apparatus for detecting damage of blast furnace inside wall repairing materials 失效
    检测高炉内墙修复材料损坏的方法和装置

    公开(公告)号:US4248809A

    公开(公告)日:1981-02-03

    申请号:US15744

    申请日:1979-02-27

    CPC分类号: C21B7/24 C21B7/06 F27D21/0021

    摘要: In repairing a blast furnace wall by injecting and solidifying a refractory material on the inside wall of the furnace from outside the furnace, a line consisting of metallic coaxial lines or metallic parallel lines insulated from each other is embedded in the refractory material and the variation of the length of this line is measured through an electric signal to detect the remaining thickness of the injected and solidified refractory material in the furnace wall part.By such detection, the damage of the repaired part of the blast furnace can be known with the lapse of time.

    摘要翻译: 在炉外从炉内注入并固化耐火材料来修复高炉壁时,由金属同轴线或彼此绝缘的金属平行线构成的线嵌入到耐火材料中, 通过电信号测量该线的长度,以检测炉壁部分中注入和固化的耐火材料的剩余厚度。 通过这种检测,随着时间的推移,可以知道高炉修理部件的损坏。

    Motor driving apparatus including a modularized current control circuit and method of controlling the same
    8.
    发明授权
    Motor driving apparatus including a modularized current control circuit and method of controlling the same 有权
    电动机驱动装置,包括模块化电流控制电路及其控制方法

    公开(公告)号:US06194856B1

    公开(公告)日:2001-02-27

    申请号:US09490686

    申请日:2000-01-24

    IPC分类号: H02P541

    摘要: In a controller, for use in an electric motor, which self-contains a current control system, a conducting portion of a feedback element from a current detector up to a summing point, and a conducting portion of a forward element from the summing point for the current control up to a gate terminal of each of switching devices are mounted in a power module to be hermetically encapsulated without being exposed to the external ambient atmosphere. The distributed processing is executed in the two portions, i.e., a current control loop, and a position control unit, a velocity control unit and an interface processing unit other than the current control loop. Therefore, the current control loop including the current feedback portion is constituted by another sub-microprocessor to be mounted together with the associated devices in a power module which is molded with resin such as epoxy resin.

    摘要翻译: 在控制器中,用于电动机中,其自身包含电流控制系统,反馈元件的导电部分,从电流检测器到求和点,以及来自求和点的正向元件的导电部分,用于 每个开关装置的栅极端子的电流控制被安装在功率模块中以被气密封装,而不暴露于外部环境大气。 分布式处理在电流控制环路,位置控制单元,速度控制单元和除当前控制环路之外的接口处理单元两部分中执行。 因此,包括电流反馈部分的电流控制回路由另一个副微处理器构成,其与相关联的装置一起安装在用树脂如环氧树脂模制的功率模块中。

    Thyristor valve with improved gate pulse generating scheme
    9.
    发明授权
    Thyristor valve with improved gate pulse generating scheme 失效
    具有改进的栅极脉冲发生方案的晶闸管阀

    公开(公告)号:US4947282A

    公开(公告)日:1990-08-07

    申请号:US169471

    申请日:1988-03-17

    申请人: Sumio Kobayashi

    发明人: Sumio Kobayashi

    CPC分类号: H03K17/0824 H02H7/1252

    摘要: A thyristor valve circuit protected having an arrester to protect it from an overvoltage. The circuit includes a voltage detector for detecting a forward voltage level applied to the thyristor valve and generating a signal sVp when the detected voltage level exceeds a predetermined voltage which is set lower than the protection level of the arrester, and a circuit for generating a gate pulse applied to the thyristor valve in response to the signal sVp* from the voltage detector. The gate pulse generating circuit permits the gate pulse to be applied to the thyristor only when the condition of the presence of conduction command signal PHS and forward voltage signal FV, and the absence of output signal sVp* of the voltage detector, is satisfied.

    Arrester and a semiconductor circuit arrangement with a protection
device including the same
    10.
    发明授权
    Arrester and a semiconductor circuit arrangement with a protection device including the same 失效
    避雷器和具有包括该保护装置的保护装置的半导体电路装置

    公开(公告)号:US4414599A

    公开(公告)日:1983-11-08

    申请号:US357146

    申请日:1982-03-11

    申请人: Sumio Kobayashi

    发明人: Sumio Kobayashi

    CPC分类号: H03K17/0824 H02M1/088

    摘要: An arrester is provided including series connected first and second nonlinear resistance elements and a by-pass circuit. The by-pass circuit is connected in parallel with the second nonlinear resistance element and short-circuits the second nonlinear resistance element only when a voltage of a predetermined polarity is applied to the second nonlinear resistance element. An semiconductor circuit arrangement with a protection device is also provided, where the arrester is used for protecting a semiconductor device.

    摘要翻译: 提供了包括串联的第一和第二非线性电阻元件和旁路电路的避雷器。 旁路电路与第二非线性电阻元件并联连接,只有当预定极性的电压施加到第二非线性电阻元件时,使第二非线性电阻元件短路。 还提供了具有保护装置的半导体电路装置,其中避雷器用于保护半导体器件。