公开(公告)号：WO1995019039A1

公开(公告)日：1995-07-13

申请号：PCT/US1995000059

申请日：1995-01-09

Applicant: VARIAN ASSOCIATES, INC.

Inventor： VARIAN ASSOCIATES, INC. ,  ANDERSON, Wetson, A. ,  ARNOLD, James, T. ,  LAVERING, Gordon, R. ,  DUFFIELD, Jack, J.

IPC: H01J35/10

CPC classification number: H01J35/106 ,  H01J2235/1204 ,  H01J2235/1279 ,  H05G1/025 ,  H05G1/04

Abstract: An X-ray tube rotating anode (14) is cooled with a liquid metal (40) functioning as a recirculated heat exchange fluid and/or a metal film in a gap (39) between the anode (14) and a stationary structure. The liquid metal (40) is confined to the gap (39) by (a) a labyrinth (44 or 46) having a coating that is not wetted by the liquid, (b) a magnetic structure (22), or (c) a wick (38). The liquid metal (40) recirculated through the anode (14) is cooled in a heat exchanger located either outside the tube or in the tube so it is surrounded by the anode (14). The heat exchanger in the tube includes a mass of metal in thermal contact with the recirculating liquid metal and including numerous passages (36) for a cooling fluid, e.g. water. A high thermal conductivity path (26, 48, 49) is provided between an anode region (16) bombarded by electrons and a central region of the tube where heat is extracted. In one embodiment the high thermal conductivity is achieved by stacked pyrolytic structures having crystalline axes arranged so there is high heat conductivity radially of the region and lower thermal heat conductivity normal to the high heat conductivity direction.

Abstract translation: X射线管旋转阳极（14）用位于阳极（14）和固定结构之间的间隙（39）中作为循环热交换流体和/或金属膜起作用的液体金属（40）进行冷却。 液体金属（40）通过（a）具有不被液体润湿的涂层的迷宫（44或46），（b）磁性结构（22）或（c）被限制在间隙（39） 一个灯芯（38）。 通过阳极（14）再循环的液态金属（40）在位于管外部或管内的热交换器中冷却，使其被阳极（14）包围。 管中的热交换器包括与再循环液体金属热接触的金属块，并且包括用于冷却流体的许多通道（36），例如， 水。 在由电子轰击的阳极区域（16）和提取热量的管的中心区域之间提供高热导率路径（26,48,49）。 在一个实施方案中，通过堆叠的热解结构实现了高热导率，其具有排列的晶轴，因此在该区域内径向具有高热传导性，并且较低的导热方向的热传导率较低。