SCREEN STRUCTURE FOR X-RAY TUBE WITH LARGE SURFACE

X-ray conversion target

The disclosure provides an X-ray conversion target. The X-ray conversion target includes target body and a target part disposed within the target body, the target part 5 having a first face configured to produce X-rays; wherein, the X-ray conversion target further comprises a cooling passage having a side wall, at least a part of the side wall being consisted of a portion of the target part. Figure 2 ...

High emissive coatings on x-ray tube components

Apparatus for surface sterilisation

Surface Sterilisation

Sterilisation of a surface and/or low thickness materials is performed by exposing the surface to a large area X-ray beam having an energy less than 50 KeV and ideally 8KeV. An X-ray source capable of producing soft X-rays over a large area with a substantially uniform dosage over the area is described which comprises an evacuated envelope 10 containing an electron source 18 that is at least partially transparent to X-rays. Electrons 24 emitted by the source 18 bombard a target 12 to generate X-rays 26. The X-rays 26 pass through the electron source and leave the evacuated envelope through a window 16 arranged on the opposite side of the electron source 18 from the target 12. The arrangement is particularly applicable for sterilizing product packaging in sheet form via production line or conveyor means. Two sources can be used to irradiate both sides of the packaging material.

HIGH EMISSIVE COATINGS ON X-RAY TUBE COMPONENTS

The present claimed invention relates to a high emissive coating (300) applied to the surfaces (210) of certain components of an x-ray tube device (100). The coating (300) increases the ability of the surface (210) to radiate heat, thus improving cooling of the tube (100). More importantly, use of the emissive coating (300) allows heat to be radiated from component surfaces (210) before it contacts and damages heat sensitive components. A preferred embodiment discloses application of an emissive coating (300) to the surface (210) or a tube's rotor (200) so as to significantly reduce the amount of heat passing from the shaft into the heat-sensitive ball bearing assembly (212) connected to it. Preferred emissive coatings (300) include metal oxide compositions composed of titanium oxide and aluminum oxide. The coating (300) is applied to the tube component surface by plasma spray coating or similar techniques.

Method and apparatus for surface sterilisation

Large surface area x-ray tube shield structure

X-ray conversion target

The disclosure provides an X-ray conversion target. The X-ray conversion target includes target body and a target part disposed within the target body, the target part 5 having a first face configured to produce X-rays; wherein, the X-ray conversion target further comprises a cooling passage having a side wall, at least a part of the side wall being consisted of a portion of the target part. Figure 2 ...

COMPUTERIZED TOMOGRAPHY (CT) IMAGING SYSTEM WITH MONOBLOCK X- RAY TUBE ASSEMBLY

A system for cooling an X-ray tube in a CT machine, wherein the X-ray tube is of the type comprising a rear cylindrical portion, a front cylindrical portion, an annular face formed at the intersection of the rear cylindrical portion and the front cylindrical portion, and an emitter opening formed in the front cylindrical portion for emitting X-rays from the X-ray tube.

Removable aperture cooling structure for an X-ray tube

An x-ray tube having a removable aperture structure that can be detached from a portion of the x-ray tube without damaging either component is disclosed. The aperture structure includes heat conducting surfaces in communication with a coolant supplied to the fluid reservoir. The removable aperture structure includes a bond surface configured to receive a removable bond with the x-ray tube evacuated enclosure.

High power X-ray tube housing

An x-ray housing can include: a finned housing member having a tubular body with an external fin array on a finned external surface and an internal fin array on a finned internal surface, the finned internal surface defining a finned housing lumen, the internal fin array and external fin array cooperatively forming a heat exchanger; and an apertured housing member having a tubular body with an x-ray window aperture extending therethrough from an external surface to an internal surface, the internal surface defining an apertured housing lumen, the finned housing member having an annular end integrally coupled with an annular end of the apertured housing member to form a tubular x-ray housing having an x-ray housing lumen.

X-ray tube rotating anode

An x-ray tube rotating anode. In one example embodiment, an x-ray tube rotating anode includes a hub configured to attach to a bearing assembly, rings positioned radially outward from the hub, bridges connecting the rings together, annular ring fins each attached to one of the rings, a focal track positioned radially outward from the annular ring fins, and annular focal track fins attached to the focal track.

STRUCTURE FOR COLLECTING SCATTERED ELECTRONS

A structure for collecting scattered electrons within a substantially evacuated vessel containing both an electron-emitting cathode and an electron-attracting anode is disclosed herein. The electron-collecting structure includes a two-sided first plate, a two-sided second plate, a fluid inlet, and a fluid outlet. The first plate is both electrically conductive and thermally emissive and is mountable within the vessel so that its first side at least partially faces the anode. The second plate is also thermally emissive and has a first side that is substantially conterminous with the second side of the first plate. Furthermore, the second plate additionally has an internal conduit for conveying a heat-absorbing fluid within. Both the fluid inlet and the fluid outlet are in fluid communication with the conduit in the second plate. During operation, the structure is able to attract scattered electrons and transfer thermal energy attributable to the electrons away from the structure.

LARGE SURFACE AREA X-RAY TUBE SHIELD STRUCTURE

An improved x-ray tube cooling system is disclosed. The system utilizes a shield structure that is connected between a cathode cylinder and an x-ray tube housing and is disposed between the electron source and the target anode. The shield includes a plurality of cooling fins to improve overall cooling of the x-ray tube and the shield so as to extend the life of the x-ray tube and related components. When immersed in a reservoir of coolant fluid, the fins facilitate improved heat transfer by convection from the shield to the to the coolant fluid. The cooling effect achieved with the cooling fins is further augmented by a convective cooling system provided by a plurality of fluid passageways formed within the shield, which are used to provide a fluid path to the coolant. In particular, a cooling unit takes fluid from the reservoir, cools the fluid, then circulates the cooled fluid through the fluid passageways. One or more depressions of "V" shaped cross section defined on the surfaces of the fluid passageways serve to facilitate nucleate boiling of the coolant in the passageway, and thereby materially increase the heat flux through the passageway to the coolant. Additionally, one or more extended surfaces disposed on the surfaces of the fluid passageways also facilitate a relative increase in the rate of heat transfer from the shield structure to the coolant. After flowing through the fluid passageway, the coolant is then discharged from the fluid passageways and directed over the cooling fins. In some embodiments, the fluid passageways are oriented so as to provide a greater heat transfer rate in certain sections of the shield than in other sections. Also disclosed is an improved braze joint for connecting the shield to the x-ray tube housing.

Removable aperture cooling structure for an X-ray tube

An x-ray tube having a removable aperture structure that can be detached from a portion of the x-ray tube without damaging either component is disclosed. The aperture structure includes heat conducting surfaces in communication with a coolant supplied to the fluid reservoir. The removable aperture structure includes a bond surface configured to receive a removable bond with the x-ray tube evacuated enclosure.

Computerized tomography (CT) imaging system with monoblock X-ray tube assembly

A system for cooling an X-ray tube in a CT machine, wherein the X-ray tube is of the type comprising a rear cylindrical portion, a front cylindrical portion, an annular face formed at the intersection of the rear cylindrical portion and the front cylindrical portion, and an emitter opening formed in the front cylindrical portion for emitting X-rays from the X-ray tube, the system comprising: a heat sink for drawing heat away from the X-ray tube, the heat sink comprising an annular body having an axial opening, and a window extending radially through the annular body, the heat sink being configured to receive the front cylindrical portion of the X-ray tube within the axial opening of the heat sink, with the emitter opening of the X-ray tube being aligned with the heat sink window; and a collimator connected to the heat sink and adapted to collimate the X-rays emitted by the X-ray tube and “focus” those X-rays on an X-ray detector, the collimator comprising a collimator opening, with the collimator being connected to the heat sink such that the collimator opening is aligned with the heat sink window and the emitter opening of the X-ray tube; the heat sink body being formed out of the same material as the emitter of the X-ray tube, such that the emitter opening of the X-ray tube will remain aligned with both the heat sink window and the collimator opening even when the emitter of the X-ray tube undergoes thermal expansion.

System and method for collecting backscattered electrons in an x-ray tube

A system and method for collecting backscattered electrons within a substantially evacuated vessel containing both an electron-emitting cathode assembly and an electron-attracting anode assembly. The system and method comprises an electron collector assembly including a first plate, a second plate, an internal member, a fluid inlet, and a fluid outlet. The first plate is mounted within the vessel closest to the anode assembly. The second plate is mounted within the vessel closest to the cathode assembly. The internal member is positioned between the first plate and the second plate, and includes an internal conduit for conveying a heat absorbing cooling fluid therethrough.

Computerized tomography (CT) imaging system with monoblock X-ray tube assembly

A system for cooling an X-ray tube in a CT machine comprising a heat sink for drawing heat away from the X-ray tube and a collimator connected to the heat sink and adapted to collimate the X-rays emitted by the X-ray tube and "focus" those X-rays on an X-ray detector, the heat sink body being formed out of the same material as the emitter of the X-ray tube, such that the emitter opening of the X-ray tube will remain aligned with both the heat sink window and the collimator opening even when the emitter of the X-ray tube undergoes thermal expansion.

Rotary anode X ray tube has rotary element with cooling elements built into it and condensate collector in housing base

The rotary anode X ray tube has a vacuum sealed housing [1] with the anode supported on a spindle [3] on bearings [4]. The anode has a disc [6b] with recesses [9] on the underside into which are fitted cooling elements [K1] that have capillary elements. Cooled fluid [12] is retained in a condensate vessel [11].

FINNED ANODE

In one example embodiment, an anode suitable for use in an x-ray tube includes a hub, a front side, and a target surface disposed on the front side. The hub is configured to attach to a bearing assembly and the front side substantially faces the bearing assembly. The anode further includes a rear side substantially opposite the front side, as well as two or more annular anode fins extending from the rear side. The annular anode fins are positioned radially outward from the hub to an outer periphery of the rear side.

X-RAY CONVERSION TARGET AND X-RAY GENERATOR

The disclosed technology relates to an X-ray conversion target. In one aspect, the X-ray conversion target includes target body and a target part arranged within the target body, the target part having a first face configured to produce X-rays. The X-ray conversion target further comprises a cooling passage having a side wall, at least a part of the side wall being consisted of a portion of the target part.

X-RAY TUBE ROTATING ANODE

An x-ray tube rotating anode. In one example embodiment, an x-ray tube rotating anode includes a hub configured to attach to a bearing assembly, rings positioned radially outward from the hub, bridges connecting the rings together, annular ring fins each attached to one of the rings, a focal track positioned radially outward from the annular ring fins, and annular focal track fins attached to the focal track.

X-RAY TUBE ROTATING ANODE

An x-ray tube rotating anode. In one example embodiment, an x-ray tube rotating anode includes a hub configured to attach to a bearing assembly, rings positioned radially outward from the hub, bridges connecting the rings together, annular ring fins each attached to one of the rings, a focal track positioned radially outward from the annular ring fins, and annular focal track fins attached to the focal track.

Combined Machine Head and Ray Imaging Device

The present application provides a combined machine head and a ray imaging device, wherein the combined machine head comprises: a housing, having an enclosed cavity; a ray tube, arranged in the enclosed cavity; and a pump and a pipe, arranged in the enclosed cavity; wherein the pump is arranged on one side away from an anode of the ray tube, the pipe has one end connected with an outlet of the pump and another end extending to be near the anode of the ray tube; or the pump is arranged near the anode of the ray tube, the pipe has one end connected to an inlet of the pump and another end extending to one side away from the anode of the ray tube. In the present application, when the pump works, insulation medium at positions away from the anode is drawn to the vicinity of the anode, and the insulation medium in the enclosed cavity is driven to cycle, so as to gradually reduce the temperature difference between the position of the anode and other positions, allowing the temperature gradient of the insulation medium in the enclosed cavity to be distributed more uniformly.

COMPUTERIZED TOMOGRAPHY (CT) IMAGING SYSTEM WITH MONOBLOCK X- RAY TUBE ASSEMBLY

A system for cooling an X-ray tube in a CT machine, wherein the X-ray tube is of the type comprising a rear cylindrical portion, a front cylindrical portion, an annular face formed at the intersection of the rear cylindrical portion and the front cylindrical portion, and an emitter opening formed in the front cylindrical portion for emitting X-rays from the X-ray tube.

LARGE SURFACE AREA X-RAY TUBE SHIELD STRUCTURE

An improved x-ray tube cooling system is disclosed. The system utilizes a shield structure (108) that is integrated within an evacuated x-ray tube housing (107) and is disposed between the electron source (106) and the target anode (104). The shield (108) includes a plurality of cooling fins (110) to improve overall cooling of the x-ray tube and the shield (108) so as to extend the life of the x-ray tube and related components. When immersed in a reservoir of coolant fluid (114), the fins facilitate improved heat transfer by convention from the shield to the coolant fluid. Fluid passageways (131, 132) are provided within the shield, with one or more epressions of "V" shaped cross sections (111B, 113B, 115B) defined on the surfaces of the fluid passageways (131) served to facilitate nucleate boiling of the coolant in the passageway, and thus increase the heat flux through the passageway to the coolant.

X-ray Tube Integral Heatsink

Improved heat transfer from an x-ray tube can be accomplished with a heatsink surrounding at least part of an x-ray tube. The heatsink can be electrically connected to an anode of the x-ray tube and can be an electrical current path. The heatsink can include a plurality of protrusions extending radially outward from the x-ray tube and can be a single, integral substance extending from an inner-surface of the heatsink to a distal-end of the protrusions.

ABSCHIRMSTRUKTUR FÜR RÖNTGENRÖHRE MIT GROSSER OBERFLÄCHE

X-ray tube single anode bore

An x-ray tube anode can include an electron hole extending from an electron entry at an exterior of the anode into a core of the anode, and an x-ray hole extending from an x-ray exit at the exterior of the anode into the core of the anode. The x-ray hole can intersect the electron hole at the core of the anode. In one embodiment, the electron hole and the x-ray hole can form a seamless bore from the electron entry to the x-ray exit. In another embodiment, the anode can be a single, integral, monolithic material with a single bore extending therethrough. In another embodiment, the core of the anode can include a target material located at a concave wall of the core of the anode.

Drehanoden-Röntgenröhre

Drehanoden-Röntgenröhre, bei der in einem Gehäuse (1) eine eine Welle (3) und einen radial davon sich erstreckenden Anodenteller (5) aufweisende Drehanode (2) und eine der Drehanode (2) zugeordnete Kondensationskühleinrichtung vorgesehen sind, wobei die Kondensationskühleinrichtung mindestens ein mit einer vakuumdichten Umhüllung versehenes, hohl ausgebildetes Kühlelement (K1, K2, K3, K4) aufweist, das im Inneren ein Kapillarelement (10) zur Herstellung einer Flüssigkeitsverbindung mit einem Kondensatbehälter (11) aufweist, dadurch gekennzeichnet, dass das Kühlelement (K1, K2, K3, K4) gegenüberliegend einer Unterseite (U) der Drehanode (2) angeordnet ist.

X-ray tube heat sink and target material

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.

Struktur zum Einfangen von gestreuten Elektronen

Eine Anordnung (40) zum Sammeln gestreuter Elektronen in einem im Wesentlichen evakuierten Gefäß (22M) enthält sowohl eine Elektronen emittierende Kathode (34M) als auch eine Elektronen anziehende Anode (29M), wie hier beschrieben ist. Die Anordnung (40) enthält eine zweiseitige erste Platte (50), eine zweiseitige zweite Platte (46), einen Fluideinlass (44) und einen Fluidauslass (45). Die erste Platte (50) ist sowohl elektrisch leitfähig als auch thermisch emissionsfähig und ist in dem Gefäß (22M) montierbar, so dass ihre erste Seite der Anode (29M) wenigstens teilweise zugewandt ist. Die zweite Platte (46) ist ebenfalls thermisch emissionsfähig und weist eine erste Seite auf, die im Wesentlichen an die zweite Seite der ersten Platte (50) grenzt. Die zweite Platte (46) weist außerdem einen inneren Kanal auf, um darin wärmeabsorbierendes Fluid zu leiten. Sowohl der Fluideinlass (44) als auch der Fluidauslass (45) stehen in Fluidverbindung mit dem Kanal der zweiten Platte (46). Während des ...

HIGH POWER X-RAY TUBE HOUSING

An x-ray housing can include: a finned housing member having a tubular body with an external fin array on a finned external surface and an internal fin array on a finned internal surface, the finned internal surface defining a finned housing lumen, the internal fin array and external fin array cooperatively forming a heat exchanger; and an apertured housing member having a tubular body with an x-ray window aperture extending therethrough from an external surface to an internal surface, the internal surface defining an apertured housing lumen, the finned housing member having an annular end integrally coupled with an annular end of the apertured housing member to form a tubular x-ray housing having an x-ray housing lumen.

X-RAY TUBE ROTATING ANODE

An x-ray tube rotating anode. In one example embodiment, an x-ray tube rotating anode includes a hub configured to attach to a bearing assembly, rings positioned radially outward from the hub, bridges connecting the rings together, annular ring fins each attached to one of the rings, a focal track positioned radially outward from the annular ring fins, and annular focal track fins attached to the focal track.

X-Ray Tube Single Anode Bore

An x-ray tube anode can include an electron hole extending from an electron entry at an exterior of the anode into a core of the anode, and an x-ray hole extending from an x-ray exit at the exterior of the anode into the core of the anode. The x-ray hole can intersect the electron hole at the core of the anode. In one embodiment, the electron hole and the x-ray hole can form a seamless bore from the electron entry to the x-ray exit. In another embodiment, the anode can be a single, integral, monolithic material with a single bore extending therethrough. In another embodiment, the core of the anode can include a target material located at a concave wall of the core of the anode. 1. A side-window x-ray tube comprising:a cathode and an anode electrically insulated from one another;the anode being a single, integral, monolithic material with a single bore extending therethrough, the single bore consisting of an electron hole intersecting with an x-ray hole in a core of the anode, the electron hole and the x-ray hole having a cylindrical shape;the electron hole extending from an exterior of the anode into the core of the anode and aimed to allow the electrons to pass into the core of the anode, and the x-ray hole extending from the exterior of the anode into the core of the anode;the cathode configured to emit electrons in an electron beam towards the anode;the core of the anode including a target material configured for generation of x-rays in response to impinging electrons from the cathode;an x-ray window, separate from the target material, covering the x-ray hole at the exterior of the anode and hermetically sealed to the anode;the x-ray hole aimed for emission of x-rays from the core of the anode through the x-ray hole, then through the x-ray window and out of the x-ray tube;{'sub': S', 'L', 'S', 'L, 'D/D≥0.5, where Dis a smallest diameter of one of the electron hole or the x-ray hole and Dis a largest diameter of the other of the electron hole or the x-ray hole; ...

STRUCTURE FOR COLLECTING SCATTERED ELECTRONS

A structure for collecting scattered electrons within a substantially evacuated vessel containing both an electron-emitting cathode and an electron-attracting anode is disclosed herein. The electron-collecting structure includes a two-sided first plate, a two-sided second plate, a fluid inlet, and a fluid outlet. The first plate is both electrically conductive and thermally emissive and is mountable within the vessel so that its first side at least partially faces the anode. The second plate is also thermally emissive and has a first side that is substantially conterminous with the second side of the first plate. Furthermore, the second plate additionally has an internal conduit for conveying a heat-absorbing fluid within. Both the fluid inlet and the fluid outlet are in fluid communication with the conduit in the second plate. During operation, the structure is able to attract scattered electrons and transfer thermal energy attributable to the electrons away from the structure.

LARGE SURFACE AREA X-RAY TUBE SHIELD STRUCTURE

HIGH POWER X-RAY TUBE HOUSING

An x-ray housing can include: a finned housing member having a tubular body with an external fin array on a finned external surface and an internal fin array on a finned internal surface, the finned internal surface defining a finned housing lumen, the internal fin array and external fin array cooperatively forming a heat exchanger; and an apertured housing member having a tubular body with an x-ray window aperture extending therethrough from an external surface to an internal surface, the internal surface defining an apertured housing lumen, the finned housing member having an annular end integrally coupled with an annular end of the apertured housing member to form a tubular x-ray housing having an x-ray housing lumen.

Finned anode

Finned anode. In one example embodiment, an anode suitable for use in an x-ray tube includes a hub, a front side, and a target surface disposed on the front side. The hub is configured to attach to a bearing assembly and the front side substantially faces the bearing assembly. The anode further includes a rear side substantially opposite the front side, as well as two or more annular anode fins extending from the rear side. The annular anode fins are positioned radially outward from the hub to an outer periphery of the rear side.

High power X-ray tube housing

X-Ray Tube Single Anode Bore

An x-ray tube anode can include an electron hole extending from an electron entry at an exterior of the anode into a core of the anode, and an x-ray hole extending from an x-ray exit at the exterior of the anode into the core of the anode. The x-ray hole can intersect the electron hole at the core of the anode. In one embodiment, the electron hole and the x-ray hole can form a seamless bore from the electron entry to the x-ray exit. In another embodiment, the anode can be a single, integral, monolithic material with a single bore extending therethrough. In another embodiment, the core of the anode can include a target material located at a concave wall of the core of the anode.

X-ray tube integral heatsink

Improved heat transfer from an x-ray tube can be accomplished with a heatsink surrounding at least part of an x-ray tube. The heatsink can be electrically connected to an anode of the x-ray tube and can be an electrical current path. The heatsink can include a plurality of protrusions extending radially outward from the x-ray tube and can be a single, integral substance extending from an inner-surface of the heatsink to a distal-end of the protrusions.

X-Ray Tube Single Anode Bore

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.

FINNED ANODE

Finned anode. In one example embodiment, an anode suitable for use in an x-ray tube includes a hub, a front side, and a target surface disposed on the front side. The hub is configured to attach to a bearing assembly and the front side substantially faces the bearing assembly. The anode further includes a rear side substantially opposite the front side, as well as two or more annular anode fins extending from the rear side. The annular anode fins are positioned radially outward from the hub to an outer periphery of the rear side.

X-ray tube integral heatsink

Improved heat transfer from an x-ray tube can be accomplished with a heatsink surrounding at least part of an x-ray tube. The heatsink can be electrically connected to an anode of the x-ray tube and can be an electrical current path. The heatsink can include a plurality of protrusions extending radially outward from the x-ray tube and can be a single, integral substance extending from an inner-surface of the heatsink to a distal-end of the protrusions.

Structure for collecting scattered electrons

A structure for collecting scattered electrons within a substantially evacuated vessel containing both an electron-emitting cathode and an electron-attracting anode is disclosed herein. The electron-collecting structure includes a two-sided first plate, a two-sided second plate, a fluid inlet, and a fluid outlet. The first plate is both electrically conductive and thermally emissive and is mountable within the vessel so that its first side at least partially faces the anode. The second plate is also thermally emissive and has a first side that is substantially conterminous with the second side of the first plate. Furthermore, the second plate additionally has an internal conduit for conveying a heat-absorbing fluid within. Both the fluid inlet and the fluid outlet are in fluid communication with the conduit in the second plate. During operation, the structure is able to attract scattered electrons and transfer thermal energy attributable to the electrons away from the structure.

X-RAY TUBE

An X-ray tube according to an embodiment of the inventive concept includes a cathode structure; an anode structure spaced vertically from the cathode structure, a gate electrode structure disposed between the cathode structure and the anode structure, an emitter array disposed between the cathode structure and the gate electrode structure, a tube sheath configured to connect the cathode structure and the anode structure, and a fixing unit connected with the gate electrode structure. The cathode structure includes a first rotation shaft and a cathode connected with the first rotation shaft as one body. The gate electrode structure includes a second rotation shaft and a gate electrode connected with the second rotation shaft through a bearing, and the second rotation shaft is connected with the first rotation shaft by a coupling unit. The gate electrode includes a gate electrode substrate and a protruding part that protrudes from the gate electrode substrate toward an emitter. The protruding part of the gate electrode includes a gate hole that vertically overlaps the emitter. The fixing unit includes a ferromagnetic structure attached to one surface of the gate electrode substrate and disposed on an outer portion of the substrate and a permanent magnet disposed adjacent to the ferromagnetic structure with the tube sheath therebetween. 1. An X-ray tube comprising:a cathode structure;an anode structure spaced vertically from the cathode structure;a gate electrode structure disposed between the cathode structure and the anode structure;an emitter array disposed between the cathode structure and the gate electrode structure;a tube sheath configured to connect the cathode structure and the anode structure; anda fixing unit connected with the gate electrode structure,wherein the cathode structure comprises a first rotation shaft and a cathode connected with the first rotation shaft as one body,the gate electrode structure comprises a second rotation shaft and a gate ...

High emissive coatings on x-ray tube components

An x-ray tube having one or more components, such as the rotor, that include a coating of relatively high emissivity. The coating, a metal oxide composition for example, is selectively applied to desired portions of the component by plasma spray or similar process. The relatively high emissivity of the coating enhances the ability of the coated surface to radiate heat, and thereby aids in implementation of a cooling effect with respect to the x-ray tube.

X-ray Tube Integral Heatsink

Improved heat transfer from an x-ray tube can be accomplished with a heatsink surrounding at least part of an x-ray tube. The heatsink can be electrically connected to an anode of the x-ray tube and can be an electrical current path. The heatsink can include a plurality of protrusions extending radially outward from the x-ray tube and can be a single, integral substance extending from an inner-surface of the heatsink to a distal-end of the protrusions.

X-Ray conversion target and X-ray generator

The disclosed technology relates to an X-ray conversion target. In one aspect, the X-ray conversion target includes target body and a target part arranged within the target body, the target part having a first face configured to produce X-rays. The X-ray conversion target further comprises a cooling passage having a side wall, at least a part of the side wall being consisted of a portion of the target part.

STRUCTURE FOR COLLECTING SCATTERED ELECTRON

PROBLEM TO BE SOLVED: To effectively collect backscattered electrons in a vacuum vessel of an X-ray tube, and to effectively transmit heat energy generated by such electrons collected from the tube. SOLUTION: This structure 40 includes a two-sided first plate 50, a two-sided second plate 46, a fluid inlet 44, and a fluid outlet 45. The first plate 50 is both electrically conductive and thermally emissive and is installable within the vessel 22M so that its first surface at least partially faces an anode 29M. The second plate 46 is also thermally emissive and has a first surface that is substantially conterminous with the second surface of the first plate 50. Furthermore, the second plate 46 additionally has an internal conduit for conveying a heat-absorbing fluid within. Both the fluid inlet 44 and the fluid outlet 45 are in communication with the conduit in the second plate 46. COPYRIGHT: (C)2007,JPO&INPIT ...

X-ray tube

An X-ray tube according to an embodiment of the inventive concept includes a cathode structure; an anode structure spaced vertically from the cathode structure, a gate electrode structure disposed between the cathode structure and the anode structure, an emitter array disposed between the cathode structure and the gate electrode structure, a tube sheath configured to connect the cathode structure and the anode structure, and a fixing unit connected with the gate electrode structure. The cathode structure includes a first rotation shaft and a cathode connected with the first rotation shaft as one body. The gate electrode structure includes a second rotation shaft and a gate electrode connected with the second rotation shaft through a bearing, and the second rotation shaft is connected with the first rotation shaft by a coupling unit. The gate electrode includes a gate electrode substrate and a protruding part that protrudes from the gate electrode substrate toward an emitter. The protruding ...

Combined machine head and ray imaging device

The present application provides a combined machine head and a ray imaging device, wherein the combined machine head comprises: a housing, having an enclosed cavity; a ray tube, arranged in the enclosed cavity; and a pump and a pipe, arranged in the enclosed cavity; wherein the pump is arranged on one side away from an anode of the ray tube, the pipe has a first end connected with an outlet of the pump and a second end extending to be near the anode of the ray tube; or the pump is arranged near the anode of the ray tube, the pipe has a first end connected to an inlet of the pump and a second end extending to one side away from the anode of the ray tube.

Large surface area x-ray tube shield structure

An improved x-ray tube cooling system is disclosed. The system utilizes a shield structure that is connected between a cathode cylinder and an x-ray tube housing and is disposed between the electron source and the target anode. The shield includes a plurality of cooling fins to improve overall cooling of the x-ray tube and the shield so as to extend the life of the x-ray tube and related components. When immersed in a reservoir of coolant fluid, the fins facilitate improved heat transfer by convection from the shield to the to the coolant fluid. The cooling effect achieved with the cooling fins is further augmented by a convective cooling system provided by a plurality of fluid passageways formed within the shield, which are used to provide a fluid path to the coolant. In particular, a cooling unit takes fluid from the reservoir, cools the fluid, then circulates the cooled fluid through the fluid passageways. One or more depressions of "V" shaped cross section defined on the surfaces of ...

High-power X-ray tube housing

一种X射线外壳，可以包括：具有管状本体的带鳍状物的外壳构件，其在带鳍状物的外部表面上具有外部鳍状物阵列并且在带鳍状物的内部表面上具有内部鳍状物阵列，带鳍状物的内部表面可以限定带鳍状物的外壳管腔，内部鳍状物阵列和外部鳍状物阵列可以共同形成热交换器；以及具有管状本体的带孔外壳构件，其具有从外部表面延伸穿过至内部表面的X射线窗口孔，内部表面可以限定带孔外壳管腔，带鳍状物的外壳构件可以具有环形端，所述环形端与带孔外壳构件的环形端整体耦合以形成具有X射线外壳管腔的管状X射线外壳。

X-RAY GENERATING TUBE INCLUDING ELECTRON GUN, X-RAY GENERATING APPARATUS AND RADIOGRAPHY SYSTEM

Provided is an X-ray generating tube including an electron gun, which includes a grid electrode secured to a support member. In the X-ray generating tube, thermal stress generated at a joining portion between the support member and the grid electrode is reduced, to thereby maintain a position of an electron beam on a target irradiated with the electron beam accurately for a long time. A grid electrode and a support member are secured to each other via a buffer member, which has an elastic coefficient that is lower than elastic coefficients of the grid electrode and the support member, and which is joined to the grid electrode and the support member through a first joining portion on the grid electrode side and a second joining portion on the support member side, respectively. 1. An X-ray generating tube including an electron gun , a grid electrode;', 'a support member configured to support the grid electrode; and', 'a buffer member having an elastic coefficient that is lower than each elastic coefficient of the grid electrode and the support member,, 'the electron gun comprisingwherein the grid electrode and the buffer member are joined to each other to form a first joining portion, and the support member and the buffer member are joined to each other to form a second joining portion, andwherein the grid electrode and the support member are secured to each other via the first joining portion and the second joining portion.2. The X-ray generating tube according to claim 1 , wherein the buffer member has an elastic coefficient that is 10% or more lower than each elastic coefficient of the grid electrode and the support member at ambient temperature.3. The X-ray generating tube according to claim 1 , wherein each one of the grid electrode claim 1 , the buffer member claim 1 , and the support member has a unique coefficient of thermal expansion which meets the following set of relationships: the support member>the buffer member>the grid electrode; and the grid electrode ...

MONOCHROMATIC X-RAY SOURCE AND X-RAY MICROSCOPE USING SUCH A SOURCE

MONOCHROMATIC X-RAY SOURCE AND X-RAY MICROSCOPE USING SUCH A SOURCE

Cette source monochromatique de rayons X comprend une cible (1) composée notamment d'un matériau intégrant des atomes émetteurs constitués d'un élément, lesdits atomes étant excités par bombardement électronique essentiellement des électrons situés sur les couches K desdits atomes.Le matériau constitutif de la cible se trouve globalement à l'état solide et sa cohésion est assurée au moyen d'atomes structurants représentant un ou plusieurs éléments et liés aux atomes émetteurs, lesdits atomes structurants possédant un coefficient d'absorption des rayons X émis par les atomes émetteurs inférieur ou égal à 2,3 mum<-1>. This monochromatic source of X-rays comprises a target (1) composed in particular of a material integrating emitting atoms made up of an element, said atoms being excited by electron bombardment essentially of electrons located on the K layers of said atoms. the target is generally in the solid state and its cohesion is ensured by means of structuring atoms representing one or more elements and linked to the emitting atoms, said structuring atoms having a lower absorption coefficient of the X-rays emitted by the emitting atoms or equal to 2.3 mum <-1>.

ANODE ASSEMBLY WITH HIGH THERMAL DISSIPATION FOR X-RAY TUBE AND TUBE THUS OBTAINED.

X-ray anode focal track region

A focal track region of an x-ray anode in an example is electrochemically etched. In a further example, an x-ray anode comprises a thermally-compliant focal track region for impingement of electrons from an x-ray cathode to create an x-ray source. The thermally-compliant focal track region comprises a pattern of discrete relative expanses and gaps.

Anodic assembly with high thermal dissipation for X-ray tube and tube thus obtained

The invention relates to X-ray tubes of the type with a rotating anode and, more particularly, to a device for cooling this anode. The invention resides in the fact that this cooling device consists of a casing (36) which at least partially surrounds the anode body (12) and through which a heat-exchange (coolant) fluid flows. The invention is applicable to X-ray tubes used in radiology installations.

X-ray conversion target

Rotation anode X-ray tube

There are provided an anode target which generates X-rays due to electrons e being incident, an emitter source which emits electrons e to be incident into the anode target, a ring-shaped recoil electron capturing structure which surrounds an orbit of electrons e heading from the emitter source toward the anode target, and captures electrons e emitted from the emitter source and recoiled on the anode target, and a vacuum envelop which keeps at least a periphery of the anode target, the emitter source, and the recoil electron capturing structure at a predetermined degree of vacuum, and the recoil electron capturing structure has a first member formed from strengthened copper which is exposed to the inside of the recoil electron capturing structure, and a second member formed from copper which is disposed at the outside in the radial direction of the first member.

Mono-tank and ray image documentation equipment

本发明公开了一种组合机头及射线影像设备，其中所述组合机头包括：壳体，具有密封腔体；射线球管，设置于所述密封腔体中；泵体及管体，设置于所述密封腔体中；所述泵体设置于远离所述射线球管阳极的一侧，所述管体的一端与所述泵体的出口连接，另一端延伸至所述射线球管的阳极附近；或者，所述泵体设置于所述射线球管阳极附近，所述管体的一端与所述泵体的入口连接，另一端延伸至远离所述射线球管阳极的一侧。本发明中当泵体工作时，可以使得远离阳极的位置处绝缘介质被抽取到阳极附近，并驱动密封腔体内部的绝缘介质形成循环，从而逐渐减小阳极位置与其他位置的温度差，进而使得密封腔体内绝缘介质的温度梯度分布更加均匀。

High power x-ray tube housing

An x-ray housing can include: a finned housing member having a tubular body with an external fin array on a finned external surface and an internal fin array on a finned internal surface, the finned internal surface defining a finned housing lumen, the internal fin array and external fin array cooperatively forming a heat exchanger; and an apertured housing member having a tubular body with an x-ray window aperture extending therethrough from an external surface to an internal surface, the internal surface defining an apertured housing lumen, the finned housing member having an annular end integrally coupled with an annular end of the apertured housing member to form a tubular x-ray housing having an x-ray housing lumen.

Rotary-transmission-target microfocus X-ray source and ray generation method

A rotary-transmission-target microfocus X-ray source and an X-ray generation method based on the rotary-transmission-target microfocus X-ray source are provided. The X-ray source comprises a chamber, and an electron beam system is installed in the chamber. The electron beam system is arranged on a same side as an anode target rotating shaft. A motor in a rotary anode target system drives an anode target to rotate through a bevel gear transmission device. The microstructure of a target is designed. An electron beam emitted by the electron beam system vertically bombards the metal target of the rotating anode target. A cooling system is configured to cool the anode target.

電子銃を備えたｘ線発生管及びｘ線撮影装置

【課題】サポート部材に固定されたグリッド電極を備えた電子銃を有するＸ線発生管において、サポート部材とグリッド電極との接合部に生じる熱応力を低減し、ターゲット上の電子線束の照射位置を長期にわたって精度良く維持する。【解決手段】グリッド電極１３とサポート部材１４とを、これらよりも低弾性係数であって、グリッド電極１３側の第一の接合部１６とサポート部材１４側の第二の接合部１９によりそれぞれ接合された緩衝部材１７を介して固定する。【選択図】図１

Large surface area x-ray tube shield structure

An improved x-ray tube cooling system is disclosed. The system utilizes a shield structure that is connected between a cathode cylinder and an x-ray tube housing and is disposed between the electron source and the target anode. The shield includes a plurality of cooling fins to improve overall cooling of the x-ray tube and the shield so as to extend the life of the x-ray tube and related components. When immersed in a reservoir of coolant fluid, the fins facilitate improved heat transfer by convection from the shield to the to the coolant fluid. The cooling effect achieved with the cooling fins is further augmented by a convective cooling system provided by a plurality of fluid passageways formed within the shield, which are used to provide a fluid path to the coolant. In particular, a cooling unit takes fluid from the reservoir, cools the fluid, then circulates the cooled fluid through the fluid passageways. One or more depressions of "V" shaped cross section defined on the surfaces of the fluid passageways serve to facilitate nucleate boiling of the coolant in the passageway, and thereby materially increase the heat flux through the passageway to the coolant. Additionally, one or more extended surfaces disposed on the surfaces of the fluid passageways also facilitate a relative increase in the rate of heat transfer from the shield structure to the coolant. After flowing through the fluid passageway, the coolant is then discharged from the fluid passageways and directed over the cooling fins. In some embodiments, the fluid passageways are oriented so as to provide a greater heat transfer rate in certain sections of the shield than in other sections. Also disclosed is an improved braze joint for connecting the shield to the x-ray tube housing.

Combined machine head and ray imaging device

The present invention provides a combined machine head and a ray imaging device, wherein the combined machine head comprises: a housing, having an enclosed cavity; a ray tube, arranged in the enclosed cavity; and a pump and a pipe, arranged in the enclosed cavity; wherein the pump is arranged on one side away from an anode of the ray tube, the pipe has one end connected with an outlet of the pump and another end extending to be near the anode of the ray tube; or the pump is arranged near the anode of the ray tube, the pipe has one end connected to an inlet of the pump and another end extending to one side away from the anode of the ray tube. In the present invention, when the pump works, insulation medium at positions away from the anode is drawn to the vicinity of the anode, and the insulation medium in the enclosed cavity is driven to cycle, so as to gradually reduce the temperature difference between the position of the anode and other positions, allowing the temperature gradient of the insulation medium in the enclosed cavity to be distributed more uniformly.

Combined machine head and ray imaging device

複合型ヘッド及び放射線撮影装置

Combined machine head and ray imaging device

X射线转换靶

本发明公开了一种X射线转换靶。X射线转换靶包括靶体和靶部，靶部设置在靶体内部，靶部具有第一面，所述第一面配置用于产生X射线；其中，X射线转换靶还包括冷却通道，所述冷却通道的侧壁至少部分由靶部的一部分构成。

Cabezal de máquina combinado y dispositivo de formación de imágenes de rayos

En la presente invención se describen un cabezal de máquina combinado y un dispositivo de formación de imágenes por rayos. El cabezal de máquina combinado comprende: una carcasa que tiene una cavidad cerrada; un tubo de bulbo de rayos, dispuesto en la cavidad cerrada; un cuerpo de bomba y un cuerpo de tubería, dispuestos en la cavidad cerrada; estando dispuesto el cuerpo de la bomba en el lado alejado del electrodo positivo del tubo del bulbo de rayos, estando conectado un extremo del cuerpo del tubo a una salida del cuerpo de la bomba, y extendiéndose el otro extremo para estar cerca del electrodo positivo del bulbo de rayos tubo; o, estando dispuesto el cuerpo de bomba cerca del electrodo positivo del tubo de bulbo de rayos, estando conectado un extremo del cuerpo de tubería a una entrada del cuerpo de bomba, extendiéndose el otro extremo hacia el lado alejado del electrodo positivo del tubo de bulbo de rayos . En la presente invención, cuando el cuerpo de la bomba funciona, el medio aislante en las posiciones alejadas del electrodo positivo se puede acercar al electrodo positivo, y el medio aislante en la cavidad cerrada se hace circular, disminuyendo así gradualmente. la diferencia de temperatura entre la posición del electrodo positivo y las otras posiciones, permitiendo además que el gradiente de temperatura del medio aislante en la cavidad cerrada se distribuya más uniformemente. (Traducción automática con Google Translate, sin valor legal)

表面積が大きいｘ線管遮蔽体構造体

改良されたＸ線管の冷却装置が開示されている。該装置は、負圧Ｘ線管ハウジング１０７内に一体化され且つ電子源１０６と標的アノード１０４との間に配置された遮蔽体構造体１０８を利用する。遮蔽体１０８は、Ｘ線管及び関係する構成要素の寿命を引き延ばし得るようにＸ線管及び遮蔽体１０８の全体的な冷却を向上させる複数の冷却フィン１１０を有している。冷却流体のリザーバ１１４内に浸漬させたとき、フィンは、遮蔽体から冷却流体までの対流による熱伝導を向上させることを容易にする。遮蔽体内に流体通路１３１、１３２が設けられ、流体通路１３１の面に画成された１つ又は１つ以上の「Ｖ」字形断面１１１Ｂ、１１３Ｂ、１１５Ｂが通路内での冷却液の核沸騰を促進し、これにより通路を通って冷却液までの熱流束を増大させる働きをする。

Large surface area x-ray tube shield structure

An improved x-ray tube cooling system is disclosed. The system utilizes a shield structure that is connected between a cathode cylinder and an x-ray tube housing and is disposed between the electron source and the target anode. The shield includes a plurality of cooling fins to improve overall cooling of the x-ray tube and the shield so as to extend the life of the x-ray tube and related components. When immersed in a reservoir of coolant fluid, the fins facilitate improved heat transfer by convection from the shield to the to the coolant fluid. The cooling effect achieved with the cooling fins is further augmented by a convective cooling system provided by a plurality of fluid passageways formed within the shield, which are used to provide a fluid path to the coolant. In particular, a cooling unit takes fluid from the reservoir, cools the fluid, then circulates the cooled fluid through the fluid passageways. One or more depressions of "V" shaped cross section defined on the surfaces of the fluid passageways serve to facilitate nucleate boiling of the coolant in the passageway, and thereby materially increase the heat flux through the passageway to the coolant. Additionally, one or more extended surfaces disposed on the surfaces of the fluid passageways also facilitate a relative increase in the rate of heat transfer from the shield structure to the coolant. After flowing through the fluid passageway, the coolant is then discharged from the fluid passageways and directed over the cooling fins. In some embodiments, the fluid passageways are oriented so as to provide a greater heat transfer rate in certain sections of the shield than in other sections. Also disclosed is an improved braze joint for connecting the shield to the x-ray tube housing.

Abschirmstruktur für röntgenröhre mit grosser oberfläche

X-ray tube single anode bore

An x-ray tube anode (12) can include an electron hole (14) extending from an electron entry (21) at an exterior of the anode into a core (16) of the anode, and an x-ray hole (19) extending from an x-ray exit (22) at the exterior of the anode into the core of the anode. The x-ray hole can intersect the electron hole at the core of the anode. In one embodiment, the electron hole and the x-ray hole can form a seamless bore from the electron entry to the x-ray exit. In another embodiment, the anode can be a single, integral, monolithic material with a single bore extending therethrough. In another embodiment, the core of the anode can include a target material (101) located at a concave wall of the core of the anode.

Rotary-transmission-target microfocus x-ray source and ray generation method

A rotary-transmission-target microfocus X-ray source and an X-ray generation method based on the rotary-transmission-target microfocus X-ray source are provided. The X-ray source comprises a chamber, and an electron beam system is installed in the chamber. The electron beam system is arranged on a same side as an anode target rotating shaft. A motor in a rotary anode target system drives an anode target to rotate through a bevel gear transmission device. The microstructure of a target is designed. An electron beam emitted by the electron beam system vertically bombards the metal target of the rotating anode target. A cooling system is configured to cool the anode target.

回転陽極ｘ線管

【課題】寿命が長く、信頼性の高い回転陽極Ｘ線管を提供すること。 【解決手段】電子ｅが入射することによってＸ線を発生させる陽極ターゲット１０と、前記陽極ターゲットに入射させる電子ｅを放出するエミッター源２２と、前記エミッター源から前記陽極ターゲットに向かう電子ｅの軌道を取り囲み、前記エミッター源から放出されて前記陽極ターゲットにて反跳した電子ｅを捕獲する環状の反跳電子捕獲構造体３０と、少なくとも前記陽極ターゲット、前記エミッター源、及び前記反跳電子捕獲構造体の周囲を所定の真空度に維持する真空外囲器４０とを備え、前記反跳電子捕獲構造体は、前記反跳電子捕獲構造体の内側に露出した、強化銅からなる第１の部材３１と、前記第１の部材の半径方向の外側に配置された、銅からなる第２の部材３２とを具備している。 【選択図】 図２

X선 변환 타겟

본 발명은 X선 변환 타겟을 제공한다. 타겟 바디와 타겟 바디 내부에 설치되고, X선을 발생시키도록 구성되는 제1면을 구비하는 타겟부를 포함하는 X선 변환 타겟에 있어서, 측벽의 적어도 일부가 타겟부의 일부에 의해 구성되는 냉각 채널을 더 포함한다.

Ｘ線変換ターゲット

【課題】Ｘ線変換ターゲットを提供する。【解決手段】ターゲット本体と、ターゲット本体の内部に設けられ、Ｘ線を発生するために配置される第１の面を有するターゲット部と、を含むＸ線変換ターゲットであって、側壁の少なくとも一部がターゲット部の一部により構成される冷却通路をさらに含む。【選択図】図５

一种旋转透射靶微焦点x射线源及射线产生方法

本发明公开了一种旋转透射靶微焦点X射线源及射线产生方法，腔体内安装有电子束系统，电子束系统与阳极靶转轴同侧排布，旋转阳极靶系统中的电机通过锥齿轮传动装置驱动阳极靶旋转，设计靶材微结构，电子束系统发射的电子束垂直轰击旋转的阳极靶的金属靶材，冷却系统用于冷却阳极靶。采用了透射式X射线源的出光原理，实现了微焦点，提高了成像分辨率，相比现有旋转阳极靶X射线源增大了X射线发射角度；电子束轰击旋转的阳极靶，有效散热体积大，提高了散热效率和阳极靶功率；克服了透射式X射线源高分辨成像时成像效率低，反射式X射线源快速成像时分辨率低、图像质量差等不足；提高了成像分辨率、X射线源亮度与X射线通量，降低了成像时间。

High power x-ray tube housing