公开(公告)号：US07746982B2

公开(公告)日：2010-06-29

申请号：US12211721

申请日：2008-09-16

Applicant: Yasuo Yoshii ,  Chiharu Tadokoro ,  Yasutaka Ito ,  Hitoshi Hattori ,  Hironori Nakamuta ,  Tetsuya Yonezawa

Inventor： Yasuo Yoshii ,  Chiharu Tadokoro ,  Yasutaka Ito ,  Hitoshi Hattori ,  Hironori Nakamuta ,  Tetsuya Yonezawa

IPC: H01J35/10 ,  H01J35/26

CPC classification number: H01J35/101 ,  H01J2235/106

Abstract: In a rotary anode X-ray tube, a disc portion is fitted into a rotary anode with a first gap therebetween and a fixed shaft is fitted into a rotary shaft to support the anode with a second gap therebetween. The disc portion and the fixed shaft are formed integral with each other to have a hollow portion therein. A cooling liquid is allowed to flow through the hollow portion. A liquid metal is filled in the first and second gaps. Dynamic pressure type bearings is formed in the second gap. A passage is formed to directly communicate the first gap to the second gap, whereby the liquid metal being directly supplied from the second gap to the first gap. Thus, the liquid metal can be fed rapidly and surely into the gap between the anode target and a cooling vessel.

Abstract translation: 在旋转阳极X射线管中，将圆盘部分装配到旋转阳极中，其间具有第一间隙，并且将固定轴装配到旋转轴中以在其间具有第二间隙支撑阳极。 圆盘部分和固定轴彼此一体形成在其中具有中空部分。 使冷却液流过中空部。 液体金属填充在第一和第二间隙中。 在第二间隙中形成动压型轴承。 形成通道以将第一间隙直接连通到第二间隙，从而将液态金属从第二间隙直接供应到第一间隙。 因此，可以将液体金属快速且可靠地进料到阳极靶和冷却容器之间的间隙中。

公开(公告)号：US20090245469A1

公开(公告)日：2009-10-01

申请号：US12408514

申请日：2009-03-20

Applicant: Yasutaka Ito ,  Hitoshi Hattori ,  Yasuo Yoshii ,  Chiharu Todokoro ,  Hironori Nakamuta ,  Tetsuya Yonezawa

Inventor： Yasutaka Ito ,  Hitoshi Hattori ,  Yasuo Yoshii ,  Chiharu Todokoro ,  Hironori Nakamuta ,  Tetsuya Yonezawa

IPC: H01J35/00

CPC classification number: H01J35/105 ,  H01J35/101 ,  H01J2235/106 ,  H01J2235/1204

Abstract: In an X-ray tube, a rotary anode formed into a hollow disk-like shape is fixedly supported by a rotating body formed into a hollow cylindrical shape. A fixed shaft has fixed ends, columnar bearing portions and a disk part, and a flow path of a cooling medium formed along a central axis thereof. The bearing portions are inserted into the rotating body with a first gap between the columnar bearing portion and the rotating body, so that the rotating body is rotatably supported. The disk part is arranged in the rotary anode with a second gap between the disk part and the rotary anode. The first and second gaps are filled with a lubricant, bearing grooves are formed in the bearing portion, thereby forming dynamic pressure bearings, and a center of gravity of the rotary anode is arranged between the first and second dynamic pressure bearings.

Abstract translation: 在X射线管中，形成为中空圆盘状的旋转阳极由形成为中空圆筒状的旋转体固定地支撑。 固定轴具有固定端，柱状承载部和盘部，以及沿其中心轴形成的冷却介质的流路。 轴承部分在圆柱形轴承部分和旋转体之间具有第一间隙而被插入到旋转体中，使得旋转体被可旋转地支撑。 盘部分布置在旋转阳极中，在盘部分和旋转阳极之间具有第二间隙。 第一和第二间隙填充有润滑剂，在轴承部分中形成轴承槽，从而形成动压轴承，并且旋转阳极的重心布置在第一和第二动压轴承之间。

公开(公告)号：US07215740B2

公开(公告)日：2007-05-08

申请号：US10927105

申请日：2004-08-27

Applicant: Harunobu Fukushima ,  Yasuo Yoshii ,  Hitoshi Hattori ,  Koichi Kitade ,  Mitsuo Iwase ,  Hironori Nakamuta

Inventor： Harunobu Fukushima ,  Yasuo Yoshii ,  Hitoshi Hattori ,  Koichi Kitade ,  Mitsuo Iwase ,  Hironori Nakamuta

IPC: H01J35/10

CPC classification number: H01J35/101 ,  H01J2235/1006 ,  H01J2235/106

Abstract: In a rotary anode type X-ray tube, a rotary anode and a rotary structure supporting the anode are arranged within the vacuum envelope. A stationary shaft has a middle section which is fitted into a cylindrical portion of the rotary structure, and a dynamic pressure type radial bearing is arranged between the cylindrical portion and the middle section. The stationary shaft also has a first section between one end of the middle section and one end of the stationary shaft, and a second section between the other end of the middle section and the other end of the stationary shaft, which are fixed to the vacuum envelope. A transverse stiffness of the second section is set to be larger than a transverse stiffness of the first section, and a center of gravity is positioned in the middle section.

Abstract translation: 在旋转阳极型X射线管中，旋转阳极和支撑阳极的旋转结构布置在真空外壳内。 固定轴具有嵌入旋转结构的圆筒部的中间部，并且在圆筒部与中间部之间配置有动压型径向轴承。 固定轴还具有在中间部分的一端和固定轴的一端之间的第一部分，以及固定在真空的中间部分的另一端和固定轴的另一端之间的第二部分 信封。 第二部分的横向刚度被设定为大于第一部分的横向刚度，并且重心位于中间部分。

公开(公告)号：US20060193439A1

公开(公告)日：2006-08-31

申请号：US11404778

申请日：2006-04-17

Applicant: Hidero Anno ,  Koichi Kitade ,  Takayuki Kitami ,  Hironori Nakamuta ,  Manabu Sato

Inventor： Hidero Anno ,  Koichi Kitade ,  Takayuki Kitami ,  Hironori Nakamuta ,  Manabu Sato

IPC: H01J35/10 ,  H01J35/26 ,  H01J35/24 ,  H01J35/28

CPC classification number: F16C37/002 ,  H01J35/101 ,  H01J2235/106 ,  H01J2235/1208 ,  H01J2235/1275 ,  H01J2235/168 ,  H05G1/025 ,  H05G1/04

Abstract: The present invention is characterized by supporting a stator to generate a magnetic field and an anode target by a dynamic pressure plain bearing using a liquid metal, and cooling at least the inside of the dynamic pressure plain bearing and an enclosure containing an anode target by circulating one kind of cooling medium, in a rotary X-ray tube apparatus which obtains X-rays by impinging an electron on an anode by rotating an anode target.

Abstract translation: 本发明的特征在于，通过使用液态金属的动压滑动轴承支撑定子以产生磁场和阳极靶，并且通过循环来至少冷却动压滑动轴承的内部和包含阳极靶的外壳 在旋转式X射线管装置中，通过旋转阳极靶而在阳极上照射电子而获得X射线的一种冷却介质。

公开(公告)号：US06477232B2

公开(公告)日：2002-11-05

申请号：US10005815

申请日：2001-12-07

Applicant: Yukinari Yoshida

Inventor： Yukinari Yoshida

IPC: H01J3510

CPC classification number: F16C33/10 ,  F16C17/102 ,  H01J35/101 ,  H01J35/105 ,  H01J2235/106 ,  H01J2235/1086

Abstract: A rotary-anode-type X-ray tube comprising an anode target, a rotary cylinder supporting the target, and a stationary shaft having radial dynamic-pressure slide bearings to which a liquid-metal lubricant is supplied between the rotary cylinder and the stationary shaft and formed partially having a small-diameter portion with an outside diameter smaller than those of the slide bearings. The X-ray tube is provided with a plurality of reservoirs from which ducts extend. All the ducts open in the small-diameter portion.

公开(公告)号：US5619549A

公开(公告)日：1997-04-08

申请号：US552404

申请日：1995-11-03

Applicant: Axel Vetter ,  Christoph Bathe

Inventor： Axel Vetter ,  Christoph Bathe

IPC: H01J35/10

CPC classification number: H01J35/101 ,  H01J2235/106

Abstract: A rotary-anode X-ray tube including a sleeve bearing with a stationary and a rotatable bearing portion having facing bearing faces, at least one of which is provided with a groove pattern, has a lubricant which is liquid at least in the operating condition present between the bearing faces. A reduction of bearing wear is achieved by addition of a solid having a low sliding friction to the lubricant.

Abstract translation: 一种旋转阳极X射线管，其包括具有静止的套筒轴承和具有面向轴承面的可旋转轴承部分，其至少一个具有凹槽图案，其具有至少在运行状态下为液体的润滑剂 在轴承面之间。 通过向润滑剂添加具有低滑动摩擦的固体来实现轴承磨损的降低。

公开(公告)号：US5583907A

公开(公告)日：1996-12-10

申请号：US542949

申请日：1995-10-13

Applicant: Katsuhiro Ono ,  Hidero Anno ,  Hiroyuki Sugiura ,  Takayuki Kitami

Inventor： Katsuhiro Ono ,  Hidero Anno ,  Hiroyuki Sugiura ,  Takayuki Kitami

IPC: H01J9/14 ,  H01J35/10

CPC classification number: H01J35/101 ,  H01J2235/106 ,  H01J2235/1086

Abstract: A rotary anode type X-ray tube comprises a thin gas passageway extending from a lubricant chamber formed along the axis of a stationary structure and open at a fine gap G effective for preventing a lubricant leakage. In manufacturing the tube, a liquid metal lubricant is supplied to the lubricant chamber and to a slide bearing section, followed by assembling the tube and, then, sealing the assembled tube in a vacuum vessel. In the subsequent exhausting step, an open end of the gas passageway is allowed to face upward. The particular exhausting operation permits completely releasing to the outside the gas impregnated in the bearing-constituting members and the liquid metal lubricant, making it possible to maintain a stable bearing function.

Abstract translation: 旋转阳极型X射线管包括从沿着固定结构的轴线形成的润滑剂室延伸的薄气体通道，并以有效防止润滑剂泄漏的微细间隙G开口。 在制造管时，将液态金属润滑剂供应到润滑剂室和滑动轴承部分，然后组装管，然后将组装的管密封在真空容器中。 在随后的排气步骤中，允许气体通道的开口端朝上。 具体的排气操作允许将浸渍在轴承构件和液态金属润滑剂中的气体完全释放到外部，使得可以保持稳定的轴承功能。

公开(公告)号：US4413356A

公开(公告)日：1983-11-01

申请号：US315700

申请日：1981-10-28

Applicant: Walter Hartl

Inventor： Walter Hartl

IPC: H01J35/10 ,  H01J35/04

CPC classification number: H01J35/101 ,  H01J2235/104 ,  H01J2235/106

Abstract: The invention relates to an X-ray tube which comprises a metal housing in which a rotary anode which is mounted on a shaft is journalled to be rotatably by means of two bearings. At least one of the bearings is constructed as a sleeve bearing which comprises dish-shaped, mutually cooperating metal bearing faces which extend transversely of the shaft and which are separated from each other by a layer which serves as a lubricant and which consists of a liquid metal or a liquid metal alloy. The bearing is connected on the one side to the shaft and on the other side to the metal housing. In order to insulate the shaft from the housing, a flat, disc-shaped insulator which is connected to the bearing is provided between the bearing and the housing or between the shaft and the bearing. This concentration is flat and has a low thermal resistance in the direction of the shaft.

Abstract translation: 本发明涉及一种X射线管，其包括金属壳体，其中安装在轴上的旋转阳极通过两个轴承支承成可旋转。 轴承中的至少一个被构造为套筒轴承，该套筒轴承包括盘形的相互配合的金属轴承面，其横向于轴延伸并且彼此分开，该层用作润滑剂并且由液体 金属或液态金属合金。 轴承的一侧连接到轴，另一侧连接到金属外壳。 为了将轴与壳体绝缘，在轴承和壳体之间或轴与轴承之间设置连接到轴承的扁平的盘形绝缘体。 该浓度平坦，并且在轴的方向上具有低热阻。

公开(公告)号：US20180114669A1

公开(公告)日：2018-04-26

申请号：US15790284

申请日：2017-10-23

Applicant: SIEMENS HEALTHCARE GMBH

Inventor： THORSTEN SPORBECK

IPC: H01J35/10

CPC classification number: H01J35/101 ,  F16C17/028 ,  F16C17/107 ,  F16C33/1075 ,  F16C2380/16 ,  H01J2235/1046 ,  H01J2235/106

Abstract: An X-ray emitter has a rotating anode rotatably mounted inside an X-ray tube by way of a multi-sliding surface bearing. The multi-sliding surface bearing has an inner and an outer sliding surface which are mounted so they can rotate relative to each other about an axis of rotation such that a gap is formed between the inner and outer sliding surfaces. A contour of the inner sliding surface, in a plane running perpendicular to the axis of rotation, is formed at least in certain sections by arc-shaped segments which are each centered around center points that are offset from each other.

公开(公告)号：US20140369475A1

公开(公告)日：2014-12-18

申请号：US14472762

申请日：2014-08-29

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Ian Strider Hunt ,  Donald Robert Allen ,  Kenwood Dayton ,  Andrew Triscari

IPC: H01J35/26 ,  H01J9/18 ,  H01J35/10

CPC classification number: H01J35/26 ,  H01J9/18 ,  H01J35/101 ,  H01J2235/106 ,  H01J2235/1086 ,  Y10T29/49826

Abstract: The present disclosure is directed towards the prevention of high voltage instabilities within X-ray tubes. For example, in one embodiment, an X-ray tube is provided. The X-ray tube generally includes a stationary member, and a rotary member configured to rotate with respect to the stationary member during operation of the X-ray tube. The X-ray tube also includes a liquid metal bearing material disposed in a space between the shaft and the sleeve, a seal disposed adjacent to the space to seal the liquid metal bearing material in the space, and an enhanced surface area material disposed on a side of the seal axially opposite the space and configured to trap within the enhanced surface area material liquid metal bearing material that escapes the seal.

Abstract translation: 本公开旨在防止X射线管内的高电压不稳定性。 例如，在一个实施例中，提供了X射线管。 X射线管通常包括固定构件，以及构造成在X射线管操作期间相对于静止构件旋转的旋转构件。 X射线管还包括设置在轴和套筒之间的空间中的液体金属轴承材料，邻近空间设置的密封件，以密封空间中的液态金属轴承材料，以及增强的表面积材料 所述密封件的侧面与所述空间轴向相对并且构造成在所述增强的表面区域内陷入材料，所述材料液体金属轴承材料逸出所述密封件。