公开(公告)号：US20070092064A1

公开(公告)日：2007-04-26

申请号：US11583448

申请日：2006-10-19

申请人： Masaru Kuribayashi ,  Masahiro Nonoguchi ,  Naohisa Osaka ,  Yoji Kobayashi

发明人： Masaru Kuribayashi ,  Masahiro Nonoguchi ,  Naohisa Osaka ,  Yoji Kobayashi

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”？>

公开(公告)号：US20070090744A1

公开(公告)日：2007-04-26

申请号：US11583747

申请日：2006-10-19

申请人： Masaru Kuribayashi ,  Masahiro Nonoguchi ,  Naohisa Osaka ,  Yoji Kobayashi

发明人： Masaru Kuribayashi ,  Masahiro Nonoguchi ,  Naohisa Osaka ,  Yoji Kobayashi

IPC分类号： H01J1/15 ,  H01J19/08 ,  H01K1/02

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 formula”end =“lead”？> Deltad / d = 0.041 to 0.145。 <？in-line-formula description =“In-line Formulas”end =“tail”？>

公开(公告)号：US06738453B2

公开(公告)日：2004-05-18

申请号：US10245660

申请日：2002-09-17

申请人： Takeyoshi Taguchi ,  Katsumi Tsukamoto ,  Masaru Kuribayashi

发明人： Takeyoshi Taguchi ,  Katsumi Tsukamoto ,  Masaru Kuribayashi

IPC分类号： H01J3506

CPC分类号： H01J1/20 ,  H01J9/04 ,  H01J35/06

摘要： In a hot cathode of an X-ray tube of the kind having a thermoelectronic emitter supported by a heating element, the emitter is comprised of plural emitter regions separated from each other. Each emitter region has the largest measure less than 3 mm, so that no crack occurs on the thermoelectronic emitter. The hot cathode is comprised of a heating element made of glassy carbon and a thermoelectronic emitter supported by the heating element. The emitter is comprised of plural emitter regions made of sintered lanthanum hexaboride. The hot cathode can be produced as described below. The heating element with a thickness of 1 mm is formed, at its thermoelectron-emitting side, with four recesses each of which is 2.6 mm in length, 0.5 mm in width and 0.3 mm in depth. The recesses are filled with lanthanum hexaboride powder, which is then sintered to complete four emitter regions.

摘要翻译： 在具有由发热元件支撑的热电子发射体的X射线管的热阴极中，发射极由彼此分离的多个发射极区域组成。 每个发射极区域具有小于3mm的最大测量值，使得在热电子发射器上不发生裂纹。 热阴极由玻璃碳制成的加热元件和由加热元件支撑的热电子发射体组成。 发射极由多个由烧结镧六硼化物制成的发射极区域组成。 热阴极可以如下所述地制造。 厚度为1mm的加热元件在其热电子发射侧形成四个凹槽，每个凹槽的长度为2.6mm，宽度为0.5mm，深度为0.3mm。 这些凹槽用六硼化镧粉末填充，然后将其烧结以完成四个发射极区域。