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15 条记录 (耗时 0.018 秒)

    Method of nondestructive insulation test and a nondestructive insulation testing apparatus
    1.
    发明授权
    Method of nondestructive insulation test and a nondestructive insulation testing apparatus 失效
    非破坏性绝缘试验方法和无损绝缘试验装置

    公开(公告)号：US5867029A

    公开(公告)日：1999-02-02

    申请号：US691236

    申请日：1996-08-02

    申请人： Yasuo Iijima ,  Masahiro Tsubokawa

    发明人： Yasuo Iijima ,  Masahiro Tsubokawa

    IPC分类号： G01R31/02 ,  G01R31/06 ,  G01R31/12

    CPC分类号： G01R31/346 ,  G01R31/024

    摘要： A method of nondestructive insulation testing is disclosed which comprises the steps of: (a) placing an electric device, having a core and at least one winding provided on the core, in a reduced atmospheric pressure; (b) insulating the laminated core from the ground; (c) supplying a voltage signal having a first surge waveform to the winding; and detecting a glow discharge which may result from step (c) to detect an insulation condition of the winding, wherein the reduced atmospheric pressure ranges from 65 to 75 Torr and the voltage signal is applied in the first direction of the winding and then, is applied in the second, opposite, direction of the winding. This method may further comprise steps of: (d) supplying a second voltage signal having a second predetermined surge waveform having a peak voltage lower than a peak voltage of the predetermined surge waveform; (e) outputting a second output signal between the winding indicative of a second insulation condition of the winding in response to step (d); (f) measuring intervals corresponding to the wavelengths of the output signal and the second output signal respectively; and (g) judging the insulation condition by comparing the measured intervals to each other. A nondestructive insulation testing apparatus is also disclosed.

    摘要翻译： 公开了一种非破坏性绝缘测试方法，其包括以下步骤：（a）在降低的大气压下放置具有芯体和至少一个设置在芯体上的绕组的电气设备; （b）将层压铁芯与地面绝缘; （c）向绕组提供具有第一浪涌波形的电压信号; 以及检测步骤（c）可能产生的辉光放电以检测绕组的绝缘条件，其中降低的大气压力范围为65至75Torr，并且电压信号沿绕组的第一方向施加，然后是 施加在绕组的第二个相对的方向上。 该方法还可以包括以下步骤：（d）提供具有峰值电压低于预定浪涌波形的峰值电压的第二预定浪涌波形的第二电压信号; （e）响应于步骤（d），在所述绕组之间输出指示所述绕组的第二绝缘条件的第二输出信号; （f）分别测量对应于输出信号和第二输出信号的波长的间隔; 和（g）通过将测量的间隔彼此进行比较来判断绝缘条件。 还公开了一种非破坏性绝缘测试装置。

    Insulation testing method and apparatus therefor
    3.
    发明授权
    Insulation testing method and apparatus therefor 失效
    绝缘测试方法及其设备

    公开(公告)号：US5963410A

    公开(公告)日：1999-10-05

    申请号：US691672

    申请日：1996-08-02

    申请人： Yasuo Iijima ,  Masahiro Tsubokawa

    发明人： Yasuo Iijima ,  Masahiro Tsubokawa

    IPC分类号： G01R31/06 ,  G01R31/12 ,  G01R31/14 ,  H02H3/00

    CPC分类号： G01R31/06 ,  G01R31/14 ,  G01R31/1227

    摘要： A voltage value of an impulse voltage repetitively applied on a test-piece coil is increased in accordance with time elapse. A terminal voltage applied on both ends of the test-piece coil is monitored to detect an electric breakdown of the test-piece coil. Upon detecting such a breakdown, application of the impulse voltage is immediately stopped to prevent the test-piece coil from being unnecessarily damaged. Meanwhile, a voltage value of the impulse voltage is measured quantitatively at the time the electric breakdown is detected and the measured data is stored in a memory, so that the memorized data can be used later as a breakdown voltage value.

    摘要翻译： 根据时间经过，重复施加在试片线圈上的脉冲电压的电压值增加。 监测施加在测试线圈两端的端子电压，以检测测试线圈的电击穿。 在检测到这种故障时，立即停止施加脉冲电压，以防止试件线圈被不必要地损坏。 同时，在检测到电击穿时定量地测量脉冲电压的电压值，并将测量数据存储在存储器中，使得存储的数据可以稍后用作击穿电压值。

    Refrigerant compressor
    4.
    发明授权
    Refrigerant compressor 有权
    制冷压缩机

    公开(公告)号：US06176691B1

    公开(公告)日：2001-01-23

    申请号：US09231086

    申请日：1999-01-14

    申请人： Masahiro Tsubokawa

    发明人： Masahiro Tsubokawa

    IPC分类号： F04B1700

    CPC分类号： H02K3/345 ,  F04B35/045 ,  H02K3/30

    摘要： In an electric motor, a stator is formed with multiple slots axially on the inner circumference thereof. Provided inside of each slot are an outer slot insulation film and an inner insulation film each made of a material having a different dielectric constant from the other. The slot insulation films assure such an earth capacitance as not to adversely affect a refrigerant compressor while allowing the increase in efficiency of the electric motor.

    摘要翻译： 在电动机中，定子在其内周上轴向形成有多个槽。 在每个槽内设置有外槽绝缘膜和内绝缘膜，每个外绝缘膜由具有不同介电常数的材料制成。 槽绝缘膜确保这样的接地电容不会对制冷剂压缩机产生不利影响，同时允许电动机的效率提高。

    Sliding member and refrigerating compressor using the same
    8.
    发明授权
    Sliding member and refrigerating compressor using the same 有权
    滑动构件和使用其的制冷压缩机

    公开(公告)号：US06299424B1

    公开(公告)日：2001-10-09

    申请号：US09486877

    申请日：2000-04-11

    申请人： Yoshiyuki Futagami ,  Hideo Hirano ,  Hideto Oka ,  Masahiro Tsubokawa

    发明人： Yoshiyuki Futagami ,  Hideo Hirano ,  Hideto Oka ,  Masahiro Tsubokawa

    IPC分类号： F03C200

    CPC分类号： F16C33/12 ,  B22F3/1103 ,  B22F2207/20 ,  B22F2998/00 ,  F01C21/08 ,  F01C21/0809 ,  F04C18/0253 ,  F04C18/3564 ,  F04C2210/14 ,  F04C2210/26 ,  F16C2204/20 ,  F16C2204/60 ,  F25B31/002 ,  F25B31/026 ,  Y10S384/902

    摘要： When sliding elements, slide bushings, vanes and Oldham rings employed in various types of refrigeration compressors and other applications meet the following conditions, they resist sticking to aluminum-base components, resist depletion of the oil film on slide faces, and exhibit excellent wear resistance. Firstly, the elements must comprise an iron-base sinter having closed cells on at least the slide face. Secondly, in order for the oil film to be maintained on the slide face by the closed cells and to enhance lubricating properties, the proportion of closed cells having circular-equivalent diameter of 10 &mgr;m or less, i.e. the number of ≦10 &mgr;m cells/total number of cells, must equal 85% or more, and the opening area of the closed cells on the slide face must equal 5% or less. Finally, the sliding element density must be 7.3 g/cm3 or higher.

    摘要翻译： 当各种类型的制冷压缩机和其他应用中使用的滑动元件，滑动衬套，叶片和十字形环都符合以下条件时，它们抵抗铝基部件的粘附，抵抗滑动面上油膜的消耗，并且表现出优异的耐磨性 。 首先，元件必须包括至少在滑动面上具有闭孔的铁基烧结体。 其次，为了通过闭孔将油膜保持在滑动面上并提高润滑性能，圆形当量直径为10μm以下的闭孔比例，即<=10μm的细胞数 /总细胞数必须等于85％以上，滑动面上的闭孔的开口面积必须等于5％以下。 最后，滑动元件密度必须在7.3g / cm3以上。

    Scroll compressor having a back pressure partitioning member
    9.
    发明授权
    Scroll compressor having a back pressure partitioning member 失效
    具有背压分隔构件的涡旋压缩机

    公开(公告)号：US5848883A

    公开(公告)日：1998-12-15

    申请号：US804844

    申请日：1997-02-24

    申请人： Masahiro Tsubokawa

    发明人： Masahiro Tsubokawa

    IPC分类号： F04C18/02 ,  F04C27/00 ,  F04C18/04

    CPC分类号： F04C27/005

    摘要： A scroll compressor is designed to exert a stable pressure on the rear surface of the rotary scroll without causing excessive pressure rise or pressure gradient by the lubricating oil which flows out from a back pressure partitioning member in a very little gap of an axial supporting portion. A bearing member 18 has an inner portion extending radially inwardly from annular groove 22 and an outer portion extending radially outwardly from the annular groove 22 to an inner edge of an axial supporting portion 24. The inner and outer portions of the bearing member 18 are formed in a bottom portion of the bearing member 18 and have a difference in level d relative to a bottom surface of the axial supporting portion 24.

    摘要翻译： 涡旋压缩机被设计成在旋转涡旋盘的后表面上施加稳定的压力，而不会由在轴向支撑部分的非常小的间隙中从背压分隔构件流出的润滑油引起过大的压力升高或压力梯度。 轴承构件18具有从环形槽22径向向内延伸的内部部分和从环形槽22径向向外延伸到轴向支撑部分24的内边缘的外部部分。轴承构件18的内部和外部部分形成 在轴承部件18的底部，并且具有相对于轴向支撑部分24的底面的液面d的差异。

    Gear pump for use in an electrically-operated sealed compressor
    10.
    发明授权
    Gear pump for use in an electrically-operated sealed compressor 有权
    用于电动密封式压缩机的齿轮泵

    公开(公告)号：US06227828B1

    公开(公告)日：2001-05-08

    申请号：US09476135

    申请日：2000-01-03

    申请人： Yoshiharu Takeuchi ,  Kiyoji Aburaya ,  Toshiharu Yasu ,  Masahiro Tsubokawa ,  Manabu Sakai ,  Shoji Aoshika ,  Tsutayoshi Narita

    发明人： Yoshiharu Takeuchi ,  Kiyoji Aburaya ,  Toshiharu Yasu ,  Masahiro Tsubokawa ,  Manabu Sakai ,  Shoji Aoshika ,  Tsutayoshi Narita

    IPC分类号： F04C2902

    CPC分类号： F04C2/10 ,  F04C2/086 ,  F04C2/102 ,  F04C13/005 ,  F04C18/0215 ,  F04C23/008 ,  F04C29/025

    摘要： A gear pump is used in an electrically-operated sealed compressor. The compressor includes a compression mechanism, an electric motor for driving the compression mechanism, and a crankshaft for transmitting the rotational force of the electric motor to the compression mechanism. The gear pump includes a pair of gears being in mesh with each other, one of which is connected to one end of the crankshaft, and a pump casing accommodating only the pair of gears. The pump casing together with the gear pair is disposed on one side of a cover plate, while other elements constituting the gear pump are disposed on the other side of the cover plate. By this construction, the distance between the gear pair and an auxiliary bearing to which the gear pump is secured can be reduced and, hence, an undesirable whirling of one end portion of the crankshaft can also be reduced.

    摘要翻译： 齿轮泵用于电动密封压缩机。 压缩机包括压缩机构，用于驱动压缩机构的电动机和用于将电动机的旋转力传递到压缩机构的曲轴。 齿轮泵包括彼此啮合的一对齿轮，其中一个齿轮连接到曲轴的一端，以及只容纳一对齿轮的泵壳。 泵壳与齿轮对一起设置在盖板的一侧，而构成齿轮泵的其它元件设置在盖板的另一侧。 通过这种结构，可以减小齿轮对与固定齿轮泵的辅助轴承之间的距离，因此也可以减少曲轴的一个端部的不期望的旋转。