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：US06546078B2

公开(公告)日：2003-04-08

申请号：US09801745

申请日：2001-03-09

Applicant: Hideki Ide

Inventor： Hideki Ide

IPC: H01J3528

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

Abstract: An X-ray tube includes a substantially cylindrical rotor having an anode target fixed thereto, a substantially columnar stationary shaft coaxially arranged inside the rotor with a bearing gap, a dynamic slide bearing having helical grooves and formed between the rotor and the stationary shaft, and a metal lubricant supplied to the grooves and to the gap. An axial bore is formed in the shaft to extend in the longitudinal direction of the shaft, and an insertion rod is inserted into the axial bore such that a space extending in the longitudinal direction of the shaft is formed between an inner circumferential surface of the axial bore and an outer circumferential surface of the insertion rod. The space acts as at least one lubricant reservoir that is configured to store the metal lubricant.

Abstract translation: X射线管包括固定有阳极靶的大致圆柱形的转子，具有轴承间隙同轴地布置在转子内部的基本上柱状的固定轴，具有螺旋槽并形成在转子和固定轴之间的动态滑动轴承，以及 提供给槽和间隙的金属润滑剂。 在轴上形成轴向孔以在轴的纵向方向上延伸，并且插入杆插入到轴向孔中，使得在轴的纵向方向上延伸的空间形成在轴向的内周表面之间 孔和插入杆的外周面。 该空间用作至少一个润滑剂储存器，其构造成存储金属润滑剂。