US 5,689,542 A · X-ray generating apparatus with a heat transfer device

Abstract

The present invention provides an X-ray generating apparatus with a shield structure having an electron beam collimating aperture and heat transfer device. The shield structure is made of thermally conductive material and placed in the discharge space between an electron source and rotating anode target. The shield structure is formed by a concave top surface facing the electron source, a flat top surface facing the anode target, and inner and outer walls wherein a linear dimension of the inner wall is substantially smaller than the linear dimension of the outer wall. The inner wall surrounds the beam collecting aperture. The heat transfer device is placed in a beveled portion of the shield structure. The heat transfer device includes an extended coiled wire formed from thermally conductive material and conductively attached to the knurled interior of the shield structure to transfer heat to the cooling liquid passing through inflow and outflow chambers of the shield structure.

Claims35

Dependent claims

An X-ray generating apparatus comprising:

an evacuated envelope;
an anode assembly disposed within said evacuated envelope, said anode assembly having a target;
an electron source fixedly mounted within said evacuated envelope in proximity to said anode target for generating a beam of electrons onto a surface of said target for producing X-rays;
a shield structure placed between said anode assembly and electron source, said shield structure having:
a body with an aperture for passing the electron beam, said body comprising a top surface facing said electron source, a bottom surface facing said anode target, an outer wall and an inner wall, said outer wall having higher linear dimension than said inner wall, and said inner wall defining said aperture;
a heat transfer means for increasing a velocity of said cooling fluid passing therethrough, said heat transfer means being disposed within said body proximate to said inner wall and conductively attached thereto;
and
inflow and outflow chambers with a septum therebetween for circulating coolant within said inflow and outflow chambers, said inflow and outflow chambers being proximate to said anode target and electron source respectively, wherein, in operation, the heat is transferred to a cooling fluid passed through said chambers.

5 more elements

Dependencies are inferred from the claim text.

X-ray generating apparatus with a heat transfer device

Life of this patent

X-ray generating apparatus with a heat transfer device

Life of this patent

Abstract

Claims35