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US 11,081,311 B2Granted
X-ray tube heat sink and target material
AssigneeMoxtek, Inc.
InventorTodd S. Parker
Life of this patent
Estimating the term…
Abstract
An x-ray source can include an x-ray tube, and a heat sink for removal of heat from the x-ray tube. The heat sink can be thermally coupled to the anode and can extend away from the anode along a heat sink longitudinal axis. The heat sink can have a base and a fin extending from the base. The base can have a greater thickness nearer the anode, and a reduced thickness along the heat sink longitudinal axis to a smaller thickness farther from the anode.
Claims20
An x-ray source comprising:
- an x-ray tube including a cathode and an anode electrically insulated from one another, the cathode configured to emit electrons in an electron beam towards the anode, and the anode configured to emit x-rays out of the x-ray tube in response to impinging electrons from the cathode;
- a heat sink thermally coupled to the anode, and extending away from the anode along a heat sink longitudinal axis;
- the heat sink having a base and an array of fins;
- the base having a greater thickness nearer the anode and reducing in thickness along the heat sink longitudinal axis to a smaller thickness farther from the anode;
- the array of fins extending from the base and arrayed along the heat sink longitudinal axis;
- each fin of the array of fins extends from the base in a direction perpendicular to the heat sink longitudinal axis;
- the array of fins includes fins extending in each of two opposite directions away from the heat sink longitudinal axis;
- an outer perimeter of the fins in each of the two opposite directions has a convex shape perpendicular to the heat sink longitudinal axis;
- and
- the array of fins includes two opposite flat sides extending from the convex shape at the outer perimeter in one of the two opposite directions to the convex shape at the outer perimeter in the other of the two opposite directions, each opposite flat side providing a surface for mounting a fan.
7 more elements
An x-ray source comprising:
- an x-ray tube including a cathode and an anode electrically insulated from one another, the cathode configured to emit electrons in an electron beam towards the anode, and the anode configured to emit x-rays out of the x-ray tube in response to impinging electrons from the cathode;
- a heat sink thermally coupled to the anode, and extending away from the anode along a heat sink longitudinal axis;
- the heat sink having a base and an array of fins;
- the base having a greater thickness nearer the anode and reducing in thickness along the heat sink longitudinal axis to a smaller thickness farther from the anode;
- the array of fins extending from the base and arrayed along the heat sink longitudinal axis;
- each fin of the array of fins extends from the base in a direction perpendicular to the heat sink longitudinal axis;
- and
- the array of fins include a smaller surface area of fins nearer the anode and increasing surface area of fins along the heat sink longitudinal axis to a larger surface area of fins farther from the anode.
5 more elements
An x-ray source comprising:
- an x-ray tube including a cathode and an anode electrically insulated from one another, the cathode configured to emit electrons in an electron beam towards the anode, the anode including a target material configured to emit x-rays out of the x-ray tube in response to impinging electrons from the cathode, the target material and the anode comprise ≥97 and ≤99.75 weight percent tungsten and ≥0.25 and ≤3 weight percent lanthanum oxide, a total weight percent of all materials in the target material equals 100 weight percent and a total weight percent of all materials in the anode equals 100 weight percent.
Dependencies are inferred from the claim text.