Patent ID: 6594340
Filing Date: 2003-07-15
Classification: F16C,H01J,H05G

Abstract:
An X-ray tube apparatus comprising:an X-ray tube including; a rotary anode target; a cathode configured to generate electrons to the anode target to cause the anode target to emit X-rays; a rotary cylinder coupled to the anode target; a stationary shaft configured to rotatably support the rotary cylinder, the stationary shaft having an opening and a hollow space communicating with the opening; a dynamic pressure type bearing provided between the stationary shaft and the rotary cylinder; and a vacuum envelope configured to receive the anode target, the stationary shaft, the rotary cylinder, and the bearing; a housing configured to receive said X-ray tube, in which a coolant is filled; a cooler device configured to cool the coolant and circulate the coolant between the cooler device and the housing; a coolant splitter configured to split the coolant supplied from the cooler device into coolant streams in the housing, one of the coolant streams being guided directly into the hollow space of the stationary shaft.