Patent ID: 6426998
Filing Date: 2002-07-30
Classification: H01J,H05G

Abstract:
An x-ray radiator comprising:a housing having an interior transverse wall with an opening therein, said housing containing a fluid coolant; a rotating bulb x-ray tube rotatably mounted in said housing, said rotating bulb x-ray tube having an evacuated housing containing a cathode and an anode, said anode forming a wall of said evacuated housing, said anode being disposed opposite said transverse wall with a gap between an exterior of said anode and said transverse wall and being in contact with said fluid coolant at said exterior of said anode, and a bearing shaft for rotatably bearing said rotating bulb x-ray tube, proceeding through said opening in said transverse wall, said opening having a diameter allowing for an inflow of said fluid coolant into said gap; said anode having a profiling at said exterior which enlarges a surface area of contact between said anode and said fluid coolant; and said exterior of said anode having an exterior shape, and said transverse wall having a shape conforming to said exterior shape, the conforming shapes of the exterior of the anode and the transverse wall, in combination with said profiling, producing pumping action for facilitating flow of said fluid coolant through said gap.