公开(公告)号：US06751292B2

公开(公告)日：2004-06-15

申请号：US10223133

申请日：2002-08-19

Applicant: Gregory C. Andrews ,  Vaughn Leroy Barrett

Inventor： Gregory C. Andrews ,  Vaughn Leroy Barrett

IPC: H01J3528

CPC classification number: H01J35/105 ,  H01J2235/1208

Abstract: A rotor assembly capable of augmented heat transfer within an x-ray tube is disclosed for preventing heat damage to sensitive tube components. The rotor assembly generally comprises a shaft assembly for supporting the anode, a bearing assembly including a bearing housing and bearing sets for enabling rotation of the shaft assembly, and a magnetic sleeve. The shaft assembly includes a rotor sleeve that receives heat emitted by the anode during tube operation. The rotor sleeve radiates the heat to the magnetic sleeve, which is concentrically disposed within the rotor sleeve. A coolant-filled gap is defined adjacent the inner surface of the magnetic sleeve to receive the heat absorbed by the magnetic sleeve. The inner periphery of the gap is defined by the outer surface of the bearing housing. Emissive and absorptive coatings are disposed on the various surfaces of the rotor sleeve and magnetic sleeve to enhance heat transfer therebetween.

公开(公告)号：US20040032929A1

公开(公告)日：2004-02-19

申请号：US10223133

申请日：2002-08-19

Inventor： Gregory C. Andrews ,  Vaughn Leroy Barrett

IPC: H05H001/00

CPC classification number: H01J35/105 ,  H01J2235/1208

Abstract: A rotor assembly capable of augmented heat transfer within an x-ray tube is disclosed for preventing heat damage to sensitive tube components. The rotor assembly generally comprises a shaft assembly for supporting the anode, a bearing assembly including a bearing housing and bearing sets for enabling rotation of the shaft assembly, and a magnetic sleeve. The shaft assembly includes a rotor sleeve that receives heat emitted by the anode during tube operation. The rotor sleeve radiates the heat to the magnetic sleeve, which is concentrically disposed within the rotor sleeve. A coolant-filled gap is defined adjacent the inner surface of the magnetic sleeve to receive the heat absorbed by the magnetic sleeve. The inner periphery of the gap is defined by the outer surface of the bearing housing. Emissive and absorptive coatings are disposed on the various surfaces of the rotor sleeve and magnetic sleeve to enhance heat transfer therebetween.

Abstract translation: 公开了一种能够在X射线管内增强热传递的转子组件，用于防止对敏感管部件的热损伤。 转子组件通常包括用于支撑阳极的轴组件，包括轴承壳体和用于使轴组件能够旋转的轴承组的轴承组件和磁性套筒。 轴组件包括在管操作期间接收由阳极发射的热的转子套筒。 转子套筒将热量辐射到同轴地设置在转子套筒内的磁性套筒。 在磁性套筒的内表面附近限定冷却剂填充的间隙，以接收由磁性套筒吸收的热量。 间隙的内周由轴承壳体的外表面限定。 发射和吸收涂层设置在转子套筒和磁性套筒的各个表面上以增强它们之间的热传递。

公开(公告)号：US06496564B2

公开(公告)日：2002-12-17

申请号：US09836306

申请日：2001-04-17

Applicant: Michael J. Price ,  Mark O. Derakhshan ,  Wayne F. Block ,  Charles B. Kendall

Inventor： Michael J. Price ,  Mark O. Derakhshan ,  Wayne F. Block ,  Charles B. Kendall

IPC: H01J3510

CPC classification number: H01J35/105 ,  H01J2235/1208

Abstract: An x-ray system with an x-ray generating device having improved heat dissipation capabilities. The x-ray generating device includes an x-ray tube mounted in a casing holding a circulating, cooling medium. According to the present invention, the x-ray generating device includes a support mechanism mounted within the x-ray generating device in a manner for adjustably positioning, relative to the casing, the focal spot alignment path of generated x-rays. Additionally, the x-ray generating device includes a cooling mechanism having an inlet chamber for channeling the cooling medium within the support mechanism. Additionally, a cooling stem may be positioned within the inlet chamber to increase the heat exchange surface area exposed to the cooling medium. Thus, the present invention advantageously increases the heat dissipation capability of the x-ray generating device.

Abstract translation: 具有X射线产生装置的X射线系统具有改进的散热能力。 X射线产生装置包括安装在保持循环的冷却介质的壳体中的X射线管。 根据本发明，X射线产生装置包括以相对于壳体可调节地定位所产生的X射线的焦点对准路径的方式安装在x射线产生装置内的支撑机构。 另外，X射线产生装置包括具有用于将冷却介质引导到支撑机构内的入口室的冷却机构。 此外，冷却杆可以位于入口室内以增加暴露于冷却介质的热交换表面积。 因此，本发明有利地增加了x射线产生装置的散热能力。

公开(公告)号：US06249569B1

公开(公告)日：2001-06-19

申请号：US09219219

申请日：1998-12-22

Applicant: Michael J. Price ,  Mark O. Derakhshan ,  Wayne F. Block ,  Charles B. Kendall

Inventor： Michael J. Price ,  Mark O. Derakhshan ,  Wayne F. Block ,  Charles B. Kendall

IPC: H01J3510

CPC classification number: H01J35/105 ,  H01J2235/1208

Abstract: An x-ray system with an x-ray generating device having improved heat dissipation capabilities. The x-ray generating device has an x-ray tube mounted in a casing holding a circulating, cooling medium. According to the present invention, the x-ray generating device includes a support mechanism mounted within the x-ray generating device in a manner for adjustably positioning, relative to the casing, the focal spot alignment path of generated x-rays. Additionally, the x-ray generating device includes a cooling mechanism having an inlet chamber for channeling the cooling medium within the support mechanism. Additionally, a cooling stem may be positioned within the inlet chamber to increase the heat exchange surface area exposed to the cooling medium. Thus, the present invention advantageously increases the heat dissipation capability of the x-ray generating device.

Abstract translation: 具有X射线产生装置的X射线系统具有改进的散热能力。 X射线产生装置具有安装在保持循环的冷却介质的壳体中的x射线管。 根据本发明，X射线产生装置包括以相对于壳体可调节地定位所产生的X射线的焦点对准路径的方式安装在x射线产生装置内的支撑机构。 另外，X射线产生装置包括具有用于将冷却介质引导到支撑机构内的入口室的冷却机构。 此外，冷却杆可以位于入口室内以增加暴露于冷却介质的热交换表面积。 因此，本发明有利地增加了x射线产生装置的散热能力。

公开(公告)号：US6160868A

公开(公告)日：2000-12-12

申请号：US265160

申请日：1999-03-09

Applicant: Douglas J. Snyder ,  Carey S. Rogers

Inventor： Douglas J. Snyder ,  Carey S. Rogers

IPC: H01J35/10

CPC classification number: H01J35/105 ,  H01J2235/1208 ,  H01J2235/1291

Abstract: Heat removal apparatus is provided for an X-ray tube having a frame, a shaft mounted for rotation with respect to the frame, and an anode supported on the shaft for rotation therewith. The apparatus comprises a heat transfer component, which is fixably joined to the frame in closely spaced relationship with an end portion of the rotatable shaft, and further comprises a radially, axially and tilt compliant sealing device, such as a flexible bellows, which is positioned to substantially enclose a space extending between the heat transfer component and a specified end portion of the shaft. A selected thermally conductive liquid metal, such as a gallium alloy, is contained within the enclosed space to provide a path for the flow of heat from the shaft to the heat transfer component, as the shaft and the anode rotate with respect to the frame. Such arrangement also permits expansion of the liquid metal, in the event of freezing.

Abstract translation: 提供了一种用于具有框架，安装成相对于框架旋转的轴的X射线管和支撑在轴上以用于旋转的阳极的热去除装置。 该装置包括传热部件，该传热部件与可旋转轴的端部以紧密间隔的关系固定地连接到框架，并且还包括径向，轴向和倾斜的柔性密封装置，例如柔性波纹管，其被定位 基本上包围在传热部件和轴的指定端部之间延伸的空间。 所选择的导热液体金属（例如镓合金）被包含在封闭空间内，以便随着轴和阳极相对于框架旋转而提供从轴到传热部件的热量流动的路径。 在冷冻的情况下，这种布置还允许液态金属膨胀。

公开(公告)号：US6084942A

公开(公告)日：2000-07-04

申请号：US157637

申请日：1998-09-21

Applicant: Erich Hell ,  Thomas Ohrndorf ,  Peter Schardt

Inventor： Erich Hell ,  Thomas Ohrndorf ,  Peter Schardt

IPC: H01J35/10 ,  H01J35/26 ,  H01J35/30

CPC classification number: H01J35/305 ,  H01J35/105 ,  H05G1/025 ,  H01J2235/1262 ,  H01J2235/162

Abstract: An x-ray radiator has a rotating bulb tube whose vacuum housing rotates within the radiator housing filled with a fluid coolant, as well as with an external heat exchanger for the cooling of the coolant, with the coolant admission connector and the coolant discharge connector for the coolant conducted through the external heat exchanger without a circulating pump arranged at respective positions of the radiator housing at which a lower pressure and a higher pressure are generated by the rotation of the rotating bulb.

Abstract translation: X射线辐射器具有旋转灯泡管，其真空壳体在散热器壳体内旋转，填充有流体冷却剂，以及用于冷却冷却剂的外部热交换器，冷却剂入口连接器和冷却剂排出连接器用于 冷却剂通过外部热交换器而没有循环泵布置在散热器壳体的相应位置处，在该位置处通过旋转灯泡的旋转产生较低的压力和较高的压力。

公开(公告)号：US5652778A

公开(公告)日：1997-07-29

申请号：US543094

申请日：1995-10-13

Applicant: Prabhat Kumar Tekriwal

Inventor： Prabhat Kumar Tekriwal

IPC: H01J35/10

CPC classification number: H01J35/105 ,  H01J2235/1204 ,  H01J2235/1208 ,  H01J2235/1291

Abstract: An X-ray tube includes a housing containing an anode target having a target shaft supported in the housing by a bearing. The target is rotated, and a cathode emits an electron beam against the target to create X-rays which are discharged from the tube through a window therein. The target shaft is integral with the target and extends axially therefrom for conducting heat away from the target and to the shaft without joint heat resistance. The bearing includes a rotor hub to which the target shaft is removably joined and is configured for improving heat conduction to a stator of the bearing for preferentially limiting the temperature thereof.

Abstract translation: X射线管包括壳体，其容纳阳极靶，所述阳极靶具有通过轴承支撑在壳体中的目标轴。 目标被旋转，并且阴极发射抵靠靶的电子束，以产生通过其中的窗口从管中排出的X射线。 目标轴与目标一体并从其轴向延伸，用于将热量从目标传导到轴而不具有接头耐热性。 轴承包括转子轮毂，目标轴可拆卸地连接到该转子轮毂，并且构造成用于改善对轴承的定子的热传导，以优先限制其温度。

公开(公告)号：US5553114A

公开(公告)日：1996-09-03

申请号：US222780

申请日：1994-04-04

Applicant: Paul A. Siemers ,  Richard W. Lindberg ,  Stephen F. Rutkowski

Inventor： Paul A. Siemers ,  Richard W. Lindberg ,  Stephen F. Rutkowski

IPC: H01J35/10

CPC classification number: H01J35/105 ,  H01J35/101 ,  H01J2235/1204 ,  H01J2235/1229

Abstract: An improved high performance x-ray system having a rotating anode therein which includes an improved coating for the x-ray tube rotor. The surface of the x-ray tube rotor is coated with a ductile, metal coating, preferably iron, having a thickness of about 0.2 to about 5.0 mils thick. The rotor coating has ductile properties with a strain to fail greater than 0.05% and thermal expansion properties which when placed on an x-ray tube rotor, provides at least about 40,000 x-ray scan-seconds prior to tube failure due to rotor spalling.

Abstract translation: 一种其中具有旋转阳极的改进的高性能x射线系统，其包括用于X射线管转子的改进的涂层。 X射线管转子的表面涂覆有具有约0.2至约5.0密耳厚度的厚度的延性金属涂层，优选铁。 转子涂层具有韧性，其应变失效大于0.05％，当放置在X射线管转子上时，热膨胀性能在由于转子剥落引起的管故障之前提供至少约40,000次X射线扫描秒。

公开(公告)号：US5264801A

公开(公告)日：1993-11-23

申请号：US878747

申请日：1992-05-05

Applicant: Donald Frank DeCou, Jr. ,  James G. Hull

Inventor： Donald Frank DeCou, Jr. ,  James G. Hull

IPC: H01J35/10 ,  H01J35/08

CPC classification number: H01J35/105 ,  H01J2235/1204 ,  H01J2235/1237

Abstract: A target track (20) of an anode (14) of an x-ray tube becomes heated adjacent a focal spot (18) to temperatures on the order of 1100.degree.-1400.degree. C. To protect the anode, a body portion (34) is coated (46) with a thermal energy emissive oxide layer (48). In order to prevent carbon from the body portion from migrating out to the oxide layer and forming carbon monoxide gas, a carbide forming barrier layer (36) is formed (38,40) between the body and the oxide coating. The barrier layer is a dense, substantially pore-free coating of a metal that has a free energy of carbide formation of at least 100 KJ/mole at 1200.degree. C. Preferably, the barrier layer material is zirconium, although hafnium, titanium, vanadium, uranium, tantalum, niobium, chromium, and their alloys also provide acceptable barriers to carbon atom migration. A molybdenum layer (44) is disposed (42) between the oxide layer and the barrier layer to prevent the zirconium or other of the above-listed barrier materials from interacting detrimentally with constituents of the oxide layer.

Abstract translation: X射线管的阳极（14）的目标轨道（20）在邻近焦斑（18）附近被加热到约1100°-1400℃的温度。为了保护阳极，主体部分 ）用热能发射氧化物层（48）涂覆（46）。 为了防止体部分的碳迁移到氧化物层和形成一氧化碳气体，在体和氧化物涂层之间形成碳化物形成阻挡层（38,40）（38,40）。 阻挡层是致密的，基本上无孔的金属涂层，其在1200℃下具有至少100KJ /摩尔的碳化物的自由能。优选地，阻挡层材料是锆，尽管铪，钛，钒 ，铀，钽，铌，铬及其合金也为碳原子迁移提供了可接受的障碍。 在氧化物层和阻挡层之间设置钼层（44）（42），以防止锆或其它上述阻挡材料与氧化物层的成分有害地相互作用。

公开(公告)号：US4953190A

公开(公告)日：1990-08-28

申请号：US373723

申请日：1989-06-29

Applicant: Dennis G. Kukoleck ,  Peter C. Eloff

Inventor： Dennis G. Kukoleck ,  Peter C. Eloff

IPC: H01J35/08 ,  H01J35/10

CPC classification number: H01J35/105

Abstract: A high thermal emittance coating for an x-ray tube anode target which permits broader application parameters and a stable coating. The coating is composed of Al.sub.2 O.sub.3 present in an amount of 50% to 80% by weight and ZrO.sub.2 or La.sub.2 O.sub.3 and TiO.sub.2 present in an amount of 50% to 20% by weight with the TiO.sub.2 and ZrO.sub.2 or La.sub.2 O.sub.3 being present in a ratio in the range of 1:1 to 10:1. A preferable coating is composed of about 80% by weight of Al.sub.2 O.sub.3 and 20% by weight of TiO.sub.2 and ZrO.sub.2.