TWI483282B - Radiation generating apparatus - Google Patents

Description

Radiation generating equipment

The present invention relates to a radiation generating apparatus, and more particularly to a radiation generating apparatus that irradiates a target with an electron beam to generate radiation.

An X-ray tube is an imaging device capable of generating X-rays, which can be applied to the industrial inspection industry, medical diagnosis or medical treatment. In general, an X-ray tube includes an electron beam generating device and a target, and the electron beam generating device may be composed of a high voltage power supply and a tungsten wire. When the high voltage power supply supplies sufficient current to the tungsten wire, the tungsten wire will generate an electron beam to the target to generate X-rays.

During the above operation, most of the energy of the electron beam incident on the target is converted into heat, which causes the temperature of the target to rise. Accordingly, under the high-power operation mode of the X-ray tube, the high-energy electron beam continuously hits the X-ray target, which tends to overheat the X-ray target and lose its service life. In addition, in some X-ray tube designs, in addition to the electron beam generating device and the target, it must also include components such as a cooling system for cooling the target, so that the X-ray tube has a large volume. Does not meet the needs of users.

The present invention provides a radiation generating apparatus having a small volume.

The radiation generating apparatus of the present invention comprises a target base, a target, a support assembly and an electron beam generating device. The target is disposed on the target pedestal. The support assembly supports the target base. The electron beam generating device is adapted to generate an electron beam, wherein the electron beam is directed at the target to generate a radiation. The target, the support assembly, and the electron beam generating device are located on the same side of the target base.

In an embodiment of the invention, the radiation generating apparatus further includes a first driving unit, wherein the supporting assembly has an axial direction and a radial direction, and the electron beam is incident on the target in the axial direction to generate radiation, the first driving The unit is adapted to drive the target base to move in a radial direction.

In an embodiment of the invention, the first driving unit is disposed on the support assembly and is adapted to drive the support assembly to move in a radial direction.

In an embodiment of the invention, the support assembly includes a second driving unit and a rotating member, the rotating member is coupled between the second driving unit and the target base, and the second driving unit is adapted to drive the rotating member and The target base rotates in the axial direction.

In an embodiment of the invention, the rotating member comprises a rotating shaft and a hollow casing, the rotating shaft is connected between the hollow casing and the second driving unit, and the hollow casing is connected to the target base and the target The material and the electron beam generating device are located in the hollow casing.

In an embodiment of the invention, the radiation generating device further includes a power supply unit and a connecting component, wherein the power supply unit is disposed outside the hollow casing, the rotating shaft is a hollow rotating shaft, and the first driving unit is disposed on the hollow rotating shaft. Inside, the connecting component is worn Connected between the electron beam generating device and the power supply unit through the hollow shaft.

In an embodiment of the invention, the rotating member is a rotating shaft, the target is annular and surrounds the rotating shaft, and the second driving unit is adapted to drive the rotating shaft and the target base to rotate in the axial direction.

In an embodiment of the invention, the first driving unit is adapted to drive the target base to vibrate in the radial direction.

In an embodiment of the invention, the target is an X-ray target and the radiation is X-ray.

In an embodiment of the invention, the radiation is transmitted through the target pedestal.

Based on the above, in the radiation generating apparatus of the present invention, the target, the support assembly, and the electron beam generating device are all disposed on the same side of the target base instead of being disposed on opposite sides of the target base, respectively. The volume of the radiation generating device is effectively reduced, so that it does not occupy a space and meets the needs of the user.

The above described features and advantages of the invention will be apparent from the following description.

100,200‧‧‧radiation generating equipment

110, 210‧‧‧ target base

120, 220‧‧‧ targets

130, 230‧‧‧Support components

132, 232‧‧‧second drive unit

134, 234‧‧‧ rotating parts

134a‧‧‧ shaft

134b‧‧‧ hollow housing

140, 240‧‧‧ electron beam generator

150, 250‧‧‧ body

160, 260‧‧‧ first drive unit

170‧‧‧Power supply unit

180‧‧‧Connecting components

190, 290‧‧‧ support structure

D1, D1'‧‧‧ axial

D2, D2’‧‧‧ radial

E‧‧‧electron beam

R‧‧‧radiation

T, T’‧‧‧ track

1 is a schematic view of a radiation generating apparatus according to an embodiment of the present invention.

2 is a schematic view of a trajectory of the electron beam hitting target of FIG. 1.

3 is a schematic view showing the trajectory of an electron beam hitting target according to another embodiment of the present invention.

4 is a schematic diagram of a radiation generating apparatus according to another embodiment of the present invention.

1 is a schematic view of a radiation generating apparatus according to an embodiment of the present invention. Referring to FIG. 1 , the radiation generating apparatus 100 of the present embodiment is, for example, a transmissive X-ray tube applied to an industrial testing industry, medical diagnosis or medical treatment, and includes a target base 110 , a target 120 , and a target The support assembly 130, an electron beam generating device 140, and a tube 150. The tube body 150 is, for example, a vacuum tube body suitable for an X-ray tube, and the support assembly 130 is disposed in the tube body 150 and supports the target base 110. The target 120 is, for example, an X-ray target and is disposed on the target pedestal 110. The electron beam generating device 140 is disposed in the tube body 150 and is adapted to generate an electron beam E that is incident on the target 120 along the axial direction D1 of the support assembly 130 to generate radiation R, such as X-rays, which penetrates the target. The material base 110 is ejected.

As shown in FIG. 1, the target 120, the support assembly 130, and the electron beam generating device 140 of the present embodiment are all located on the same side of the target base 110 (shown as the right side of the target base 110), instead of being separately disposed. On the opposite sides of the target base 110, the volume of the radiation generating device 100 can be effectively reduced, so that it does not occupy a space and meets the needs of the user.

In the present embodiment, the radiation generating apparatus 100 further includes a first driving unit 160. The first driving unit 160 is disposed on the supporting component 130 and is adapted to drive the diameter of the supporting component 130 and the target base 110 along the supporting component 130. Move to D2. In addition, the support assembly 130 includes a second driving unit 132 and a rotating member 134, and the rotating member 134 is connected between the second driving unit 132 and the target base 110, and the second driving unit 132 is adapted to drive the rotating member 134 and the target base 110 to rotate along the axial direction D1 of the supporting assembly 130.

Under the above-described actuation mode, when the electron beam E generated by the electron beam generating device 140 is incident on the target 120 in the axial direction D1, the target 120 can be rotated in the axial direction D1 by the driving of the second driving unit 132. Further, displacement can be continuously generated in the radial direction D2 by the driving of the first driving unit 160 to constantly change the area where the target 120 is struck by the electron beam E. In this way, the heat dissipation efficiency of the target 120 can be increased without being hit by the electron beam E, and the target 120 can be prevented from being overheated by the impact of the electron beam E, thereby prolonging the service life of the target 120. .

In detail, the rotating member 134 of the embodiment includes a rotating shaft 134a and a hollow casing 134b. The rotating shaft 134a is connected between the hollow casing 134b and the second driving unit 132. The hollow casing 134b is connected to the target. The susceptor 110, and the target 120 and the electron beam generating device 140 are located within the hollow housing 134b. The hollow casing 134b is, for example, an insulating casing to prevent leakage of current from the electron beam generating device 140.

The radiation generating device 100 further includes a power supply unit 170 and a connecting component 180. The power supply unit 170 is disposed outside the hollow casing 134b, and the rotating shaft 134a is a hollow rotating shaft. The first driving unit 160 is disposed in the hollow rotating shaft to drive The rotating member 134 and the target base 110 rotate, and the connecting member 180 is connected between the electron beam generating device 140 and the power supply unit 170 through the hollow rotating shaft. The connecting component 180 is configured to support the electron beam generating device 140 and includes a line through which the electron beam generating device 140 is electrically connected to the power supply unit 170. The power supply unit 170 is configured, for example, in Within the support structure 190, the support structure 190 is fixed to the tube body 150 of the radiation generating device 100 and connected to the support assembly 130 to support the support assembly 130 and the target base 110. The second driving unit 132 is adapted to drive the rotation of the rotating shaft 134a to drive the hollow housing 134b, the target base 110 and the first driving unit 160 to rotate in the axial direction D1, and the electron beam generating device 140, the connecting component 180, and the power supply unit 170 and support structure 190 are not rotated.

2 is a schematic view of a trajectory of the electron beam hitting target of FIG. 1. In the present embodiment, the first driving unit 160 is, for example, an oscillator and is adapted to drive the target base 110 to vibrate in the radial direction D2 to cooperate with the rotation of the target base 110 in the axial direction D1 to cause the electron beam E to hit the target. The trajectory T of the material 120 is as shown in FIG. 2, and the trajectory T continuously reciprocates in the radial direction D2. Further, damping may be disposed between the first driving unit 160 and the inner wall of the rotating shaft 134a as needed, which is not limited by the present invention. Moreover, the present invention does not limit the manner in which the first driving unit 160 drives the target pedestal 110 and the target 120, which will be exemplified below.

3 is a schematic view showing the trajectory of an electron beam hitting target according to another embodiment of the present invention. In the present embodiment, the first driving unit 160 is not an oscillator and drives the target base 110 to move in the radial direction D2 in an appropriate manner to cooperate with the rotation of the target base 110 in the axial direction D1 to strike the electron beam E. The trajectory T' of the material 120 is as shown in FIG. 3, and the trajectory T' has a larger displacement range in the radial direction D2 to enhance the utilization of the target 120. In other embodiments, the rotational speed of the target base 110 in the axial direction D1 and the movement of the target base 110 in the radial direction D2 can be changed as needed to adjust the trajectory of the electron beam E hitting the target 120. Do not limit this.

4 is a schematic diagram of a radiation generating apparatus according to another embodiment of the present invention. In the radiation generating apparatus 200 of FIG. 4, the target base 210, the target 220, the support assembly 230, the electron beam generating device 240, the tubular body 250, the first driving unit 260, and the support structure 290 function in a manner similar to that of FIG. The manner in which the target base 110, the target 120, the support assembly 130, the electron beam generating device 140, the tubular body 150, the first driving unit 160, and the support structure 190 function will not be described herein. The radiation generating device 200 is different from the radiation generating device 100 in that the rotating member 234 of the supporting assembly 230 is a rotating shaft, the target 220 is annular and surrounds the rotating shaft, and the electron beam generating device 240 is disposed outside the supporting assembly 230. The first driving unit 160 is disposed outside the rotating shaft. When the first driving unit 260 drives the target base 210 to be displaced in the radial direction D2', the second driving unit 232 of the support assembly 230 is adapted to drive the rotating shaft and the target base 210 to rotate in the axial direction D1'.

In summary, in the radiation generating apparatus of the present invention, the target, the supporting component and the electron beam generating device are all disposed on the same side of the target base instead of being respectively disposed on opposite sides of the target base. In this way, the volume of the radiation generating device can be effectively reduced, so that it does not occupy a space and meets the needs of the user. In addition, when the electron beam generated by the electron beam generating device is incident on the target in the axial direction of the supporting assembly, the target material can be rotated in the axial direction by the driving of the second driving unit, and can be further driven by the first driving unit. The drive is continuously displaced in the radial direction to constantly change the area of the target that is struck by the electron beam. In this way, the heat dissipation efficiency of the respective regions of the target without being hit by the electron beam can be increased, and the target material can be prevented from being overheated by the impact of the electron beam, thereby prolonging the service life of the target.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

100‧‧‧radiation generating equipment

110‧‧‧ target base

120‧‧‧ targets

130‧‧‧Support components

132‧‧‧Second drive unit

134‧‧‧Rotating parts

134a‧‧‧ shaft

134b‧‧‧ hollow housing

140‧‧‧Electron beam generating device

150‧‧‧ tube body

160‧‧‧First drive unit

170‧‧‧Power supply unit

180‧‧‧Connecting components

190‧‧‧Support structure

D1‧‧‧ axial

D2‧‧‧ radial

E‧‧‧electron beam

R‧‧‧radiation

Claims (10)

A radiation generating device comprising: a target base; at least one driving unit adapted to drive the target base; a target disposed on the target base; and a support assembly supporting the target base And an electron beam generating device adapted to generate an electron beam, wherein the electron beam is incident on the target to generate a radiation, the target, the at least one driving unit, the supporting assembly and the electron beam generating device are located The same side of the target base. The radiation generating device of claim 1, wherein the at least one driving unit comprises a first driving unit, wherein the supporting assembly has an axial direction and a radial direction, and the electron beam is incident on the axial direction A target is adapted to generate the radiation, and the first drive unit is adapted to drive the target base to move in the radial direction. The radiation generating apparatus of claim 2, wherein the first driving unit is disposed on the supporting assembly and is adapted to drive the supporting assembly to move in the radial direction. The radiation generating device of claim 2, wherein the at least one driving unit comprises a second driving unit, the supporting assembly comprises a rotating member, the rotating member is coupled to the second driving unit and the target base Between the seats, the second driving unit is adapted to drive the rotating member and the target base to rotate in the axial direction. The radiation generating device of claim 4, wherein the rotating member comprises a rotating shaft and a hollow casing, the rotating shaft is coupled to the hollow casing and the second Between the drive units, the hollow housing is coupled to the target base, and the target and the electron beam generating device are located within the hollow housing. The radiation generating device of claim 5, further comprising a power supply unit and a connecting component, wherein the power supply unit is disposed outside the hollow housing, the rotating shaft is a hollow rotating shaft, and the first driving unit The connecting element is disposed in the hollow rotating shaft, and the connecting element is connected between the electron beam generating device and the power supply unit through the hollow rotating shaft. The radiation generating device of claim 4, wherein the rotating member is a rotating shaft, the target is annular and surrounds the rotating shaft, and the second driving unit is adapted to drive the rotating shaft and the target base This axial rotation. The radiation generating apparatus of claim 2, wherein the first driving unit is adapted to drive the target base to vibrate in the radial direction. The radiation generating apparatus of claim 1, wherein the target is an X-ray target, and the radiation is X-ray. The radiation generating apparatus of claim 1, wherein the radiation is emitted through the target base.