公开(公告)号：US12074006B2

公开(公告)日：2024-08-27

申请号：US17806732

申请日：2022-06-13

申请人： SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.

发明人： Dun Li ,  Mingchun Zhai ,  Guangzhong Bao ,  Xiao Fang

IPC分类号： H01J35/10 ,  H05G1/02

CPC分类号： H01J35/106 ,  H01J35/1024 ,  H01J35/107 ,  H05G1/025 ,  H01J2235/1006 ,  H01J2235/1204 ,  H01J2235/1208 ,  H01J2235/1262 ,  H01J2235/1266

摘要： A radiation emission device is provided. The radiation emission device may include a cathode configured to emit an electron beam and an anode configured to rotate on a shaft. The anode may be situated to receive the electron beam from the cathode. The radiation emission device may further include a rotor configured to drive the anode to rotate. The rotor may be mechanically connected to the shaft. The radiation emission device may further include a sleeve configured to support the shaft via at least one bearing. The cathode, the anode, and the rotor may be enclosed in an enclosure that is connected to the sleeve. At least a portion of the sleeve may reside outside the enclosure.

公开(公告)号：US20240038479A1

公开(公告)日：2024-02-01

申请号：US18360469

申请日：2023-07-27

申请人： Varex Imaging Corporation

发明人： Thomas Anton Morris ,  Patrick Kevin Lewis

IPC分类号： H01J35/10

CPC分类号： H01J35/107 ,  H01J35/104

摘要： An x-ray tube includes a housing containing cooling oil and a vacuum envelope disposed within the housing and including a solid envelope wall. The oil is disposed between the housing and wall. An anode and cathode are arranged in a vacuum environment and surrounded by the wall. A rotor connected to the anode is arranged on bearings within the vacuum environment. Additionally, a stator assembly positioned within the oil surrounds the rotor to define an oil-filled annular gap. The stator assembly includes a stator core, stator teeth spaced apart by intervening stator slots, and stator windings disposed within the stator slots. Each stator tooth includes a tooth tip positioned adjacent to the boundary wall and set a distance apart from the stator windings to form an intra-slot cooling channel in fluid communication with the oil-filled annular gap such that the stator teeth inclusive of its tooth tips are immersed in oil.

公开(公告)号：US20190103244A1

公开(公告)日：2019-04-04

申请号：US15720024

申请日：2017-09-29

申请人： General Electric Company

发明人： Kevin Shane Kruse

IPC分类号： H01J35/10

CPC分类号： H01J35/106 ,  H01J35/101 ,  H01J35/104 ,  H01J35/107 ,  H01J2235/1204 ,  H01J2235/1262 ,  H01J2235/127 ,  H01J2235/1283

摘要： A liquid metal or spiral groove bearing structure for an x-ray tube and associated process for manufacturing the bearing structure is provided that includes a bearing shaft rotatably disposed in a bearing housing or shell. The shell includes a thrust seal engaged with a sleeve to maintain co-axiality for the rotating liquid metal seal formed in the shell about the shaft. The shaft has a bore for the introduction of a cooling fluid into the bearing assembly in which is disposed a cooling tube. The cooling tube includes turbulence-inducing features to increase the turbulence of the cooling fluid flowing through the cooling tube, consequently enhancing the heat exchange between the cooling fluid and the shaft. This maximizes the heat transfer from the shaft to the oil, allowing materials with lower thermal conductivities, such as non-refractory materials, to be used to form the bearing shaft and shell.