公开(公告)号：US11424095B1

公开(公告)日：2022-08-23

申请号：US16451313

申请日：2019-06-25

Applicant: General Electric Company

Inventor： Srdjan Acimovic ,  Edward Emaci ,  Michael John Utschig

IPC: A61B6/00 ,  H01J35/10 ,  G01T1/16 ,  G01T7/00

Abstract: A system for passive thermal control of an X-ray tube is provided. The system includes an X-ray tube having an electron beam target and including a rotary bearing assembly supporting the electron beam target in rotation. The rotary bearing assembly includes a stationary shaft and a bearing sleeve configured to rotate with respect to the stationary shaft during operation of the X-ray tube. The rotary bearing assembly also includes a first coolant flow path extending through a center of the stationary shaft and a second coolant flow path disposed through a radially inward portion of the stationary shaft disposed about the center of the stationary shaft. The rotary bearing assembly further includes a flow control valve configured to passively regulate flow of coolant through the second coolant flow path based on a pressure of the coolant.