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公开(公告)号：US08908833B2
公开(公告)日：2014-12-09
申请号：US13337673
申请日：2011-12-27
申请人： Masahiro Nonoguchi , Masashi Kageyama , Tomohiro Chaki , Masaaki Yamakata , Koichi Kato , Masaru Kuribayashi
发明人： Masahiro Nonoguchi , Masashi Kageyama , Tomohiro Chaki , Masaaki Yamakata , Koichi Kato , Masaru Kuribayashi
CPC分类号： H01J35/10 , H01J35/06 , H01J35/14 , H01J35/16 , H01J2235/06 , H01J2235/086 , H01J2235/166 , H01J2235/168
摘要： Provided is an X-ray generator comprising a cathode for generating electrons; a rotating anode having a cylindrical electron impingement surface, an X-ray focal point being formed by a region in which the electrons impinge upon the electron impingement surface; and a Wehnelt electrode for imparting an electric field to the electrons emitted from the cathode. The Wehnelt electrode has a field formation surface for forming the electric field, and an electron passage aperture formed by the field formation surface. The field formation surface of the Wehnelt electrode is inclined with respect to a plane tangent to an outer circumferential surface of the rotating anode at the center of the X-ray focal point. The center of the cathode is in a plane orthogonal to the field formation surface and aligned with the center of the electron passage aperture.
摘要翻译： 提供一种X射线发生器，其包括用于产生电子的阴极; 具有圆柱形电子冲击表面的旋转阳极，由电子撞击在电子冲击表面上的区域形成的X射线焦点; 以及用于向从阴极发射的电子赋予电场的Wehnelt电极。 Wehnelt电极具有用于形成电场的场形成表面和由场形成表面形成的电子通过孔。 Wehnelt电极的场形成面相对于与X射线焦点的中央处的旋转阳极的外周面相切的面倾斜。 阴极的中心在垂直于场形成表面并与电子通过孔的中心对准的平面中。
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公开(公告)号：US20120163550A1
公开(公告)日：2012-06-28
申请号：US13337940
申请日：2011-12-27
IPC分类号： H01J35/06
CPC分类号： H01J35/10 , H01J35/06 , H01J35/14 , H01J35/16 , H01J2235/06 , H01J2235/086 , H01J2235/166 , H01J2235/168
摘要： Provided is an X-ray generator for generating X-rays from an X-ray focal point that is a region in which electrons emitted from a filament impinge upon a rotating anode. The X-ray generator has a Wehnelt electrode for surrounding the filament, an attachment part formed integrally with the Wehnelt electrode, a pedestal to which the attachment part is attached, and a casing for housing the pedestal and the anticathode. The width of the space in which the anticathode is housed by the casing is less than the width of the space in which the pedestal is housed by the casing. The Wehnelt electrode extends into the space in which the anticathode is housed by the casing, in a state in which the attachment part is attached to the pedestal.
摘要翻译： 提供一种用于从X射线焦点产生X射线的X射线发生器，X射线焦点是从灯丝发射的电子撞击在旋转阳极上的区域。 X射线发生器具有用于围绕灯丝的Wehnelt电极，与Wehnelt电极一体形成的安装部分，安装有附接部件的基座以及用于容纳基座和抗电极的壳体。 由外壳容纳防蚁的空间的宽度小于由壳体容纳基座的空间的宽度。 Wehnelt电极在安装部分附接到基座的状态下延伸到由壳体容纳阴极的空间中。
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公开(公告)号：US08879690B2
公开(公告)日：2014-11-04
申请号：US13337940
申请日：2011-12-27
CPC分类号： H01J35/10 , H01J35/06 , H01J35/14 , H01J35/16 , H01J2235/06 , H01J2235/086 , H01J2235/166 , H01J2235/168
摘要： Provided is an X-ray generator for generating X-rays from an X-ray focal point that is a region in which electrons emitted from a filament impinge upon a rotating anode. The X-ray generator has a Wehnelt electrode for surrounding the filament, an attachment part formed integrally with the Wehnelt electrode, a pedestal to which the attachment part is attached, and a casing for housing the pedestal and the anticathode. The width of the space in which the anticathode is housed by the casing is less than the width of the space in which the pedestal is housed by the casing. The Wehnelt electrode extends into the space in which the anticathode is housed by the casing, in a state in which the attachment part is attached to the pedestal.
摘要翻译： 提供一种用于从X射线焦点产生X射线的X射线发生器，X射线焦点是从灯丝发射的电子撞击在旋转阳极上的区域。 X射线发生器具有用于围绕灯丝的Wehnelt电极，与Wehnelt电极一体形成的安装部分，安装有附接部件的基座以及用于容纳基座和抗电极的壳体。 由外壳容纳防蚁的空间的宽度小于由壳体容纳基座的空间的宽度。 Wehnelt电极在安装部分附接到基座的状态下延伸到由壳体容纳阴极的空间中。
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公开(公告)号：US07197117B2
公开(公告)日：2007-03-27
申请号：US11180190
申请日：2005-07-13
申请人： Masataka Sakata , Tomohiro Chaki , Masaru Okazaki , Yuji Kusaka , Shiro Umegaki , Atsushi Hamanaka , Masahiro Nonoguchi
发明人： Masataka Sakata , Tomohiro Chaki , Masaru Okazaki , Yuji Kusaka , Shiro Umegaki , Atsushi Hamanaka , Masahiro Nonoguchi
IPC分类号： H01J35/10
CPC分类号： H01J35/106 , H01J35/101 , H01J2235/20
摘要： A coolant passage is formed inside the rotary shaft while an air passage is formed inside the casing. A mechanical seal is arranged between the coolant passage and the air passage. Leakage cooling water, which has leaked in the form of vapor from the mechanical seal, is relegated radially outwardly along with air by the action of a rotary vane, which is disposed in the air passage, and finally flows out of an air outlet. A coolant sensor may be provided to early detect the leakage water.
摘要翻译： 在壳体内部形成空气通路的同时，在旋转轴的内部形成冷却剂通路。 在冷却剂通道和空气通道之间设置机械密封。 已经从机械密封件以蒸气形式泄漏的泄漏冷却水通过设置在空气通道中的旋转叶片的作用与空气一起径向向外降低，最后从出气口流出。 可以提供冷却剂传感器来早期检测泄漏水。
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公开(公告)号：US20060013364A1
公开(公告)日：2006-01-19
申请号：US11180190
申请日：2005-07-13
申请人： Masataka Sakata , Tomohiro Chaki , Masaru Okazaki , Yuji Kusaka , Shiro Umegaki , Atsushi Hamanaka , Masahiro Nonoguchi
发明人： Masataka Sakata , Tomohiro Chaki , Masaru Okazaki , Yuji Kusaka , Shiro Umegaki , Atsushi Hamanaka , Masahiro Nonoguchi
CPC分类号： H01J35/106 , H01J35/101 , H01J2235/20
摘要： A coolant passage is formed inside the rotary shaft while an air passage is formed inside the casing. A mechanical seal is arranged between the coolant passage and the air passage. Leakage cooling water, which has leaked in the form of vapor from the mechanical seal, is relegated radially outwardly along with air by the action of a rotary vane, which is disposed in the air passage, and finally flows out of an air outlet. A coolant sensor may be provided to early detect the leakage water.
摘要翻译： 在壳体内部形成空气通路的同时，在旋转轴的内部形成冷却剂通路。 在冷却剂通道和空气通道之间设置机械密封。 已经从机械密封件以蒸气形式泄漏的泄漏冷却水通过设置在空气通道中的旋转叶片的作用与空气一起径向向外降低，最后从出气口流出。 可以提供冷却剂传感器来早期检测泄漏水。
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公开(公告)号：US07271530B2
公开(公告)日：2007-09-18
申请号：US11583747
申请日：2006-10-19
IPC分类号： H01J1/15
CPC分类号： H01J1/16 , H01J35/06 , H01J2201/2867
摘要： A filament for an X-ray tube has a varied wire diameter but has a constant coil outside diameter to obtain a good uniformity of the longitudinal temperature distribution of the filament. The filament has a wire diameter d which is gradually reduced from the longitudinal central region to the longitudinal ends while the coil outside diameter D is fixed along the longitudinal direction. The wire is polished at only the inside of the coil to reduce the wire diameter. In order to make the longitudinal temperature distribution uniform as far as possible, the difference Δd between the wire diameter dmax at the longitudinal central region and the wire diameter dmin at the longitudinal ends should satisfy the following limitation: Δd/dmax=0.041 to 0.145.
摘要翻译： 用于X射线管的灯丝具有变化的线径，但具有恒定的线圈外径以获得长丝的纵向温度分布的良好均匀性。 灯丝具有从纵向中心区域到纵向端部逐渐减小的线径d，而线圈外径D沿着纵向方向固定。 线材只在线圈内部抛光，以减少线径。 为了使纵向温度分布尽可能均匀，在纵向中心区域的线径d max max之间的差值Deltad与线径d < 纵向端应满足以下限制：<？in-line-formula description =“In-line Formulas”end =“lead”？> Deltad / d
= 0.041 to 0.145 < line-formula description =“In-line Formulas”end =“tail”？> -
公开(公告)号：US07333592B2
公开(公告)日：2008-02-19
申请号：US11404932
申请日：2006-04-14
IPC分类号： H01J35/06
摘要： An X-ray tube includes an electron gun in which a Wehnelt electrode is formed with an opening asymmetric about an electron emitter. The electron emitter is an elongate coil filament which is disposed inside the elongate opening of the Wehnelt electrode. The opening has two longer sides positioned asymmetrically about a center-of-width line of the filament. Each of the two longer sides is curved in the same direction as viewed in a direction normal to the front face of the Wehnelt electrode. The two longer sides have curvature radii R1 and R2 different from each other, so that an electron-beam-irradiation region on a target is not curved but becomes almost straight.
摘要翻译： X射线管包括电子枪，其中形成有围绕电子发射体不对称的开口的Wehnelt电极。 电子发射器是细长的线圈细丝，其设置在Wehnelt电极的细长开口内部。 开口具有两条较长的侧面围绕灯丝的宽度中心线不对称的位置。 两个长边中的每一个在与垂直于Wehnelt电极的正面的方向相同的方向上弯曲。 两个长边的曲率半径R 1和R 2彼此不同，使得靶上的电子束照射区域不是弯曲的，而是几乎是直的。
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公开(公告)号：US20060233308A1
公开(公告)日：2006-10-19
申请号：US11404932
申请日：2006-04-14
IPC分类号： H01J35/06
摘要： An X-ray tube includes an electron gun in which a Wehnelt electrode is formed with an opening asymmetric about an electron emitter. The electron emitter is an elongate coil filament which is disposed inside the elongate opening of the Wehnelt electrode. The opening has two longer sides positioned asymmetrically about a center-of-width line of the filament. Each of the two longer sides is curved in the same direction as viewed in a direction normal to the front face of the Wehnelt electrode. The two longer sides have curvature radii R1 and R2 different from each other, so that an electron-beam-irradiation region on a target is not curved but becomes almost straight.
摘要翻译： X射线管包括电子枪，其中形成有围绕电子发射体不对称的开口的Wehnelt电极。 电子发射器是细长的线圈细丝，其设置在Wehnelt电极的细长开口内部。 开口具有两条较长的侧面围绕灯丝的宽度中心线不对称的位置。 两个长边中的每一个在与垂直于Wehnelt电极的正面的方向相同的方向上弯曲。 两个长边的曲率半径R 1和R 2彼此不同，使得靶上的电子束照射区域不是弯曲的，而是几乎是直的。
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公开(公告)号：US07352846B2
公开(公告)日：2008-04-01
申请号：US11583448
申请日：2006-10-19
CPC分类号： H01J35/06
摘要： A coiled filament for an X-ray tube has a varied coil pitch to obtain a good uniformity of the longitudinal temperature distribution. The filament has a central region including plural turns having a same coil pitch, and end regions which include plural turns each of which has a coil pitch smaller than the coil pitch of the central region. The coil pitches of the plural turns of the end regions are reduced one by one by a same variation from a turn close to the central region toward an outermost turn. A value of Δp/p is within a range of 0.015 to 0.1 and k/n is within a range of 0.3 to 0.8, where p is the coil pitch of the central region, Δp is the coil pitch variation of the end regions, n is a total number of turns of the filament, and k is a sum of numbers of turns of the end regions. The k/n preferably satisfies the following equation: k/n=0.72−4.66(Δp/p)±0.12.
摘要翻译： 用于X射线管的螺旋丝具有变化的线圈间距，以获得纵向温度分布的良好均匀性。 灯丝具有包括具有相同线圈间距的多匝的中心区域，以及包括多个匝的端部区域，其中线圈间距小于中心区域的线圈间距。 通过与靠近中心区域的转弯朝向最外侧的转动相同的变化，多个端部区域的线圈间距逐渐减小。 Deltap / p的值在0.015〜0.1的范围内，k / n在0.3〜0.8的范围内，其中p是中心区域的线圈间距，Deltap是端部区域的线圈间距变化，n 是灯丝的总匝数，k是端部区域的匝数之和。 k / n优选满足以下等式：<？in-line-formula description =“In-line Formulas”end =“lead”？> k / n = 0.72-4.66（Deltap / p）±0.12。 -line-formula description =“内联公式”end =“tail”？>
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公开(公告)号：US20070092064A1
公开(公告)日：2007-04-26
申请号：US11583448
申请日：2006-10-19
IPC分类号： H01J35/06
CPC分类号： H01J35/06
摘要： A coiled filament for an X-ray tube has a varied coil pitch to obtain a good uniformity of the longitudinal temperature distribution. The filament has a central region including plural turns having a same coil pitch, and end regions which include plural turns each of which has a coil pitch smaller than the coil pitch of the central region. The coil pitches of the plural turns of the end regions are reduced one by one by a same variation from a turn close to the central region toward an outermost turn. A value of Δp/p is within a range of 0.015 to 0.1 and k/n is within a range of 0.3 to 0.8, where p is the coil pitch of the central region, Δp is the coil pitch variation of the end regions, n is a total number of turns of the filament, and k is a sum of numbers of turns of the end regions. The k/n preferably satisfies the following equation: k/n=0.72−4.66(Δp/p)±0.12.
摘要翻译： 用于X射线管的螺旋丝具有变化的线圈间距，以获得纵向温度分布的良好均匀性。 灯丝具有包括具有相同线圈间距的多匝的中心区域，以及包括多个匝的端部区域，其中线圈间距小于中心区域的线圈间距。 通过与靠近中心区域的转弯朝向最外侧的转动相同的变化，多个端部区域的线圈间距逐渐减小。 Deltap / p的值在0.015〜0.1的范围内，k / n在0.3〜0.8的范围内，其中p是中心区域的线圈间距，Deltap是端部区域的线圈间距变化，n 是灯丝的总匝数，k是端部区域的匝数之和。 k / n优选满足下列公式：<？in-line-formula description =“In-line Formulas”end =“lead”？> k / n = 0.72-4.66（Deltap / p）±0.12。 <？in-line-formula description =“In-line Formulas”end =“tail”？>
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