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2. 发明授权

US06426475B2 Vacuum valve 失效
标题翻译：真空阀
公开(公告)号：US06426475B2
公开(公告)日：2002-07-30
申请号：US09880035
申请日：2001-06-14
申请人： Kenji Watanabe , Kumi Uchiyama , Kiyoshi Kagenaga , Junichi Sato , Eiji Kaneko , Mitsutaka Honma , Hiromichi Somei
发明人： Kenji Watanabe , Kumi Uchiyama , Kiyoshi Kagenaga , Junichi Sato , Eiji Kaneko , Mitsutaka Honma , Hiromichi Somei
IPC分类号： H01H3375
CPC分类号： H01H33/6644 , H01H1/0206 , H01H33/185 , H01H33/6645
摘要： The flux density Bct is applied at the center area of the electrode. The flux density Bct is adjusted within the range A of 0.75 to 0.9 times greater than the axial flux density Bcr which gives the lowest arc voltage between the electrodes against each breaking current. The axial flux density monotonously increases from the center to the circumferential area of the electrode. Here, the radial position where the axial flux density Bcr which gives the lowest arc voltage Vmin is adjusted within the region B of 20% to 40% of the radius of the electrode. The axial flux density is made monotonously increase in an outer area from the region B and give the maximum value Bp in a circumferential area equal to or beyond 70% of the radius of the electrode. The maximum value Bp is adjusted within the range C of 1.4 to 2.4 times greater than the flux density Bct given at the electrode center.
摘要翻译：磁通密度Bct被施加在电极的中心区域。磁通密度Bct在比轴向通量密度Bcr的0.75至0.9倍的范围A内调节，这相对于每个断开电流给出电极之间的最低电弧电压。轴向通量密度从电极的中心到圆周面积单调增加。这里，在电极半径的20％〜40％的区域B内调整给出最低电弧电压Vmin的轴向通量密度Bcr的径向位置。在区域B的外部区域的轴向通量密度单调增加，并且在等于或超过电极半径的70％的圆周区域中给出最大值Bp。最大值Bp在比电极中心给出的通量密度Bct大1.4至2.4倍的范围C内调节。

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