X-ray generator

Abstract

This application relates to the field of X-ray generator technology and discloses an X-ray generator including a housing, an inner housing, a ray tube, a heat sink, and a fan. The housing has a first cavity and includes a first end and a second end disposed opposite to each other. The first end has an air inlet, and the second end has an air outlet, which communicate with the first cavity. The inner housing has a second cavity and is disposed within the first cavity, with a first heat dissipation duct between the inner and outer housings. The ray tube is disposed in the second cavity, which is filled with thermally conductive adhesive. The heat sink is located on the side of the inner housing facing the first end, and the anode of the ray tube is connected to the heat sink. The fan is located on the side of the heat sink facing away from the inner housing and drives the gas to flow from the first end to the second end. Through this method, the embodiments of this application can reduce production costs and improve the heat dissipation effect on the ray tube.

Description

Technical Field

[0001] This application relates to the field of X-ray generator technology, and in particular to an X-ray generator. Background Technology

[0002] X-rays have strong penetrating power and are widely used in non-destructive industrial testing, medical applications, food processing, security inspection, and many other fields. X-ray generators produce X-rays through a ray tube, which generates considerable heat during operation, requiring a heat dissipation structure. Currently, the main method for heat dissipation of X-ray tubes on the market is to immerse the tube in insulating oil within its housing to achieve both insulation and heat dissipation.

[0003] However, the method of impregnating the ray tube with insulating oil places high demands on the cleanliness of the insulating oil and the sealing technology of the shell. It requires the use of expensive insulating oil cleaning processes and sealing structure processing technology, resulting in high production costs. Moreover, the heat dissipation effect is poor if the heat is transferred to the shell by the insulating oil alone. Utility Model Content

[0004] In view of the problems existing in the background art, the purpose of this application is to provide an X-ray generator that overcomes or at least partially solves the above-mentioned problems.

[0005] According to a first aspect of this application, an X-ray generator is provided, comprising a housing, an inner housing, a ray tube, a heat sink, and a fan. The housing has a first cavity and includes a first end and a second end disposed opposite to each other. The first end has an air inlet, and the second end has an air outlet, which communicate with the first cavity. The inner housing has a second cavity, which is disposed within the first cavity, and a first heat dissipation duct is provided between the inner and outer housings. The ray tube is disposed in the second cavity, which is filled with thermally conductive adhesive.

[0006] The radiator is located on the side of the inner shell facing the first end, and the anode of the ray tube is connected to the radiator. The fan is located on the side of the radiator facing away from the inner shell, and the fan is used to drive the gas to flow from the first end to the second end.

[0007] In one or more of the above optional embodiments, the radiator includes a heat sink plate and a plurality of heat sink fins. The heat sink plate abuts against the surface of the inner shell facing the first end, and the heat sink fins protrude from the surface of the heat sink plate facing away from the inner shell. A second heat dissipation air duct is formed between adjacent heat sink fins.

[0008] In one or more of the above optional embodiments, the second heat dissipation air duct includes a plurality of first air ducts and a plurality of second air ducts. The plurality of first air ducts are arranged along a first direction to form a first air duct group, and the plurality of second air ducts are arranged along the first direction to form a second air duct group. Viewed from the first end to the second end, the middle portion of the first air duct protrudes in an arc shape in the first direction, and the middle portion of the second air duct protrudes in an arc shape in the opposite direction to the first direction. Along the direction from the first end to the second end, the projection of the fan outlet is located in the middle region of the first air duct and the second air duct. The first direction is perpendicular to the direction from the first end to the second end.

[0009] In one or more of the above optional embodiments, when viewed from the first end to the second end, the first air duct is symmetrically arranged about the first axis, the second air duct is symmetrically arranged about the first axis, and the first air duct group and the second air duct group are symmetrically arranged about the second axis. The first axis is perpendicular to the first direction, and the second axis is parallel to the first direction.

[0010] In one or more of the above optional embodiments, viewed from the first end to the second end, the heat sink includes a third end and a fourth end disposed opposite to each other in the first direction, and a fifth end and a sixth end disposed opposite to each other in the second direction. The first air duct group includes at least one first air duct with openings at both ends located at the edge of the third end, and at least one first air duct with openings at both ends located at the edges of the fifth end and the sixth end, respectively. The second air duct group includes at least one second air duct with openings at both ends located at the edge of the fourth end, and at least one second air duct with openings at both ends located at the edges of the fifth end and the sixth end, respectively. The first direction, the second direction, and the direction from the first end to the second end are mutually perpendicular.

[0011] In one or more of the above optional embodiments, the second heat dissipation air duct further includes a third air duct. When viewed from the first end to the second end, the third air duct is disposed between the first air duct group and the second air duct group. The third air duct includes a first main air duct, a plurality of first branch air ducts and a plurality of second branch air ducts. The first main air duct extends along the second direction. One end of the first branch air duct is connected to the side of the first main air duct facing away from the second air duct group. One end of the second branch air duct is connected to the side of the first main air duct facing away from the second air duct group. The other end of the first branch air duct is bent in an arc shape in the opposite direction to the first direction. The opening of the other end of the first branch air duct is located at the edge of the fifth end. The other end of the second branch air duct is bent in an arc shape in the opposite direction to the first direction. The opening of the other end of the second branch air duct is located at the edge of the sixth end.

[0012] In one or more of the above optional embodiments, the second heat dissipation air duct further includes a fourth air duct. Viewed from the first end to the second end, the fourth air duct is disposed between the first air duct group and the second air duct group. The fourth air duct is located on the side of the third air duct facing away from the first air duct group. The fourth air duct includes a second main air duct, a plurality of third branch air ducts, and a plurality of fourth branch air ducts. The second main air duct extends along the second direction. One end of the third branch air duct is connected to the side of the second main air duct facing away from the first air duct group. One end of the fourth branch air duct is connected to the side of the second main air duct facing away from the first air duct group. The other end of the third branch air duct is bent in an arc shape in the first direction. The opening of the other end of the third branch air duct is located at the edge of the fifth end. The other end of the fourth branch air duct is bent in an arc shape in the first direction. The opening of the other end of the second branch air duct is located at the edge of the sixth end. The fourth air duct and the third air duct are symmetrical about the second axis. And / or the first branch air duct and the second branch air duct are symmetrical about the first axis. And / or the third branch air duct and the fourth branch air duct are symmetrical about the first axis.

[0013] In one or more of the above optional embodiments, the anode includes a target and a heat dissipation part. The heat dissipation part is sleeved on the target, and the inner shell is provided with a through hole. The target is connected to the heat sink through the through hole. Along the direction from the second end to the first end, the heat dissipation part abuts against the heat sink through the through hole.

[0014] In one or more of the above optional embodiments, the X-ray generator includes a control board and a high-voltage board. The high-voltage board is disposed in the second cavity, the control board is disposed in the first end, and the fan is disposed between the control board and the inner shell. The control board is electrically connected to the high-voltage board and the fan, and the high-voltage board is electrically connected to the X-ray tube.

[0015] In one or more of the above optional embodiments, the housing includes a first end plate, a second end plate, and a side panel. The first end plate and the second end plate are disposed opposite each other in the direction from the first end to the second end. The side panel is connected between the first end plate and the second end plate. The base plate of the control board is fixed to the first end plate. The power devices of the control board are disposed on the side of the base plate of the control board facing away from the first end plate. The air inlet is disposed on the part of the side panel near the first end plate.

[0016] The beneficial effects of the embodiments of this application are as follows: The X-ray generator provided in the embodiments of this application, by placing the X-ray tube in the second cavity of the inner shell and filling the second cavity with thermally conductive adhesive, uses the thermally conductive adhesive to transfer the heat generated by the X-ray tube to the inner shell for heat dissipation. Furthermore, a heat sink is set outside the inner shell, and the heat sink is connected to the anode of the X-ray tube in the inner shell to absorb the heat of the X-ray tube. The gas is driven by a fan to flow to the heat sink and the inner shell for heat dissipation. Compared with the traditional method of using insulating oil to fill and dissipate heat from the X-ray tube, the insulating oil cleaning process is eliminated, the requirement for sealing performance is reduced, thereby reducing production costs, while also improving the heat dissipation effect of the X-ray tube. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 A perspective view of an X-ray generator provided in an embodiment of this application; Figure 2 A cross-sectional schematic diagram of an X-ray generator provided in an embodiment of this application; Figure 3 A schematic diagram of the heat sink of an X-ray generator as seen from the first end to the second end, according to an embodiment of this application. Figure 4 A partial exploded view of an X-ray generator provided in an embodiment of this application; Figure 5 This is another cross-sectional schematic diagram of an X-ray generator provided in an embodiment of this application. Detailed Implementation

[0019] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and similar expressions used in this specification are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0021] In the description of this specification, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0023] Please see Figure 1 and Figure 2 The X-ray generator 1000 includes a housing 1, an inner housing 2, a ray tube 3, a heat sink 4, and a fan 5. The housing 1 has a first cavity a, and includes a first end 1a and a second end 1b disposed opposite to each other. The first end 1a has an air inlet b, and the second end 1b has an air outlet c. The air inlet b and the air outlet c communicate with the first cavity a. The inner housing 2 has a second cavity d, which is located within the first cavity a. A first heat dissipation duct e is provided between the inner housing 2 and the housing 1. The ray tube 3 is located in the second cavity d, which is filled with thermally conductive adhesive (not shown). The heat sink 4 is located on the side of the inner housing 2 facing the first end 1a. The anode 32 of the ray tube 3 is connected to the heat sink 4. The fan 5 is located on the side of the heat sink 4 facing away from the inner housing 2, and the fan 5 drives the gas to flow in the direction X from the first end 1a to the second end 1b.

[0024] The X-ray generator 1000 provided in this application embodiment places the X-ray tube 3 inside the second cavity d of the inner shell 2 and fills the second cavity d with thermally conductive adhesive to transfer the heat generated by the X-ray tube 3 to the inner shell 2 for heat dissipation. Furthermore, a heat sink 4 is provided outside the inner shell 2. The heat sink 4 is connected to the anode 32 of the X-ray tube 3 in the inner shell 2 to absorb the heat of the X-ray tube 3. The gas is driven by a fan 5 to flow to the heat sink 4 and the inner shell 2 for heat dissipation. Compared with the traditional method of using insulating oil to fill and dissipate heat from the X-ray tube 3, the insulating oil cleaning process is eliminated, the requirement for sealing performance is reduced, thereby reducing production costs, while also improving the heat dissipation effect of the X-ray tube 3.

[0025] In some embodiments, the thermally conductive adhesive is made from aluminum nitride, silicone resin, and lead oxide. Aluminum nitride has high thermal conductivity, and lead oxide is used to block X-rays, which helps reduce the problem of X-ray leakage.

[0026] In some embodiments, a first heat dissipation duct e is defined between the outer wall of the inner shell 2 and the inner wall of the outer shell 1.

[0027] In some embodiments, the radiator 4 includes a heat sink 41 and a plurality of heat sink fins 42. The heat sink 41 abuts against the surface of the inner shell 1 facing the first end 1a, and the heat sink fins 42 protrude from the surface of the heat sink 41 facing away from the inner shell 1. A second heat dissipation airway f is formed between adjacent heat sink fins 42. During operation, the fan 5 drives the gas to flow in the direction X from the first end 1a to the second end 1b. The gas enters the first cavity a through the air inlet b and flows to the radiator 4 and into the second heat dissipation airway f. The gas changes direction due to the obstruction of the heat sink 41 and flows to the edge of the heat sink 41 under the guidance of the second heat dissipation airway f. After encountering the obstruction of the outer shell 1, the gas changes direction again, flows through the first heat dissipation airway e, and flows to the outside through the air outlet c. By setting the heat sink 41 to abut against the inner shell 2, it is beneficial to increase the contact area between the heat sink 4 and the inner shell 2 to improve the heat exchange efficiency between the inner shell 2 and the heat sink 41. Furthermore, by setting heat sink fins 42 on the surface of the heat sink 41 facing away from the inner shell 2, the fan 5 drives the airflow to flow through the second heat dissipation channel f formed between adjacent heat sink fins 42, which is beneficial to improve the heat dissipation effect of the heat sink 4.

[0028] Please see Figure 2 and Figure 3In some embodiments, the second heat dissipation duct f includes a plurality of first ducts f1 and a plurality of second ducts f2. The plurality of first ducts are arranged along the first direction Y to form a first duct group, and the plurality of second ducts are arranged along the first direction Y to form a second duct group. Viewed along the direction X from the first end 1a to the second end 1b, the middle portion of the first duct f1 protrudes in an arc shape towards the first direction Y, and the middle portion of the second duct f2 protrudes in an arc shape in the opposite direction to the first direction Y. Along the direction X from the first end 1a to the second end 1b, the projection of the fan 5's outlet is located in the middle region of the first ducts f1 and the second ducts f2. In this application, the first direction Y, the second direction Z, and the direction X from the first end 1a to the second end 1b are mutually perpendicular. During operation, fan 5 drives gas to flow from the outlet of fan 5 along the direction X from the first end 1a to the second end 1b into the middle area of ​​the first air duct f1 and the second air duct f2. After entering the first air duct f1, the gas changes direction due to the obstruction of the heat sink 41, splitting into two airflows. Guided by the first air duct f1, the gas flows out of the first air duct f1 through the openings at both ends of the first air duct f1. These are referred to below as the first airflow and the second airflow. After entering the second air duct f2, the gas changes direction due to the obstruction of the heat sink 41, splitting into two airflows. Guided by the second air duct f2, the gas flows out of the second air duct f2 through the openings at both ends of the second air duct f2. These are referred to below as the third airflow and the fourth airflow. Figure 3 The dashed arrows in the diagram indicate the flow direction of each airflow exiting the second heat dissipation duct f. Compared to other embodiments, where the second heat dissipation duct f is straight, after the airflow enters the middle region of the second heat dissipation duct f, it forms only two airflows in opposite directions under the guidance of the second heat dissipation duct f. These two airflows in opposite directions bounce back after impacting the inner wall of the outer casing 1, generating significant turbulence, which increases the flow resistance of the gas in the second heat dissipation duct f and reduces the heat dissipation efficiency. In this embodiment, the second heat dissipation duct f is configured to include an arc-shaped first duct f1 and a second duct f2. After the airflow enters the middle region of the first duct f1 and the second duct f2, the arc-shaped first duct f1 and the second duct f2 change the original flow direction of the airflow, splitting it into at least four airflows in different directions: a first airflow, a second airflow, a third airflow, and a fourth airflow. This helps to reduce turbulence and thus improve the heat dissipation efficiency of the radiator 4.

[0029] In some embodiments, there are two fans 5, which are arranged along the first direction Y and along the direction X from the first end 1a to the second end 1b. The projection of the outlet of one fan 5 is located in the middle region of the first air duct f1, and the projection of the outlet of the other fan 5 is located in the middle region of the second air duct f2.

[0030] In some embodiments, viewed along the direction X from the first end 1a to the second end 1b, the first air duct f1 is symmetrically arranged about the first axis z1, the second air duct f2 is symmetrically arranged about the first axis z1, and the first air duct group and the second air duct group are symmetrically arranged about the second axis z2. The first axis z1 is perpendicular to the first direction Y, and the second axis z2 is parallel to the first direction Y. The overall symmetrical arrangement of the first air duct f1 and the second air duct f2 facilitates uniform airflow distribution, further reduces turbulence, and improves the heat dissipation efficiency and temperature uniformity of the radiator 4.

[0031] In some embodiments, viewed along the direction X from the first end 1a to the second end 1b, the heat sink 41 includes a third end 41a and a fourth end 41b disposed opposite each other along the first direction Y, and a fifth end 41c and a sixth end 41d disposed opposite each other along the second direction Z. A first air duct group includes at least one first air duct f1 with openings at both ends located at the edge of the third end 41a, and at least one first air duct f1 with openings at both ends located at the edges of the fifth end 41c and the sixth end 41d, respectively. A second air duct group includes at least one second air duct f2 with openings at both ends located at the edge of the fourth end 41b, and at least one second air duct f2 with openings at both ends located at the edges of the fifth end 41c and the sixth end 41d, respectively.

[0032] In some embodiments, the heat sink 41 is generally square in shape.

[0033] In some embodiments, the second heat dissipation air duct f further includes a third air duct f3. When viewed along the direction X from the first end 1a to the second end 1b, the third air duct is located between the first air duct group and the second air duct group. The third air duct f3 includes a first main air duct f31, a plurality of first branch air ducts f32, and a plurality of second branch air ducts f33. The first main air duct f31 extends along the second direction Z. One end of the first branch air duct f32 is connected to the first end of the first main air duct f31 on the side opposite to the second air duct group. One end of the second branch air duct f33 is connected to the second end of the first main air duct f31 on the side opposite to the second air duct group. The end of the first branch air duct f32 away from the first main air duct f31 is bent in an arc shape in the opposite direction to the first direction Y. The opening of the first branch air duct f32 away from the first main air duct f31 is located at the edge of the fifth end 41c. The end of the second branch air duct f33 away from the first main air duct f31 is bent in an arc shape in the opposite direction to the first direction Y. The opening of the second branch air duct f33 away from the first main air duct f31 is located at the edge of the sixth end 41d.

[0034] In some embodiments, the second heat dissipation duct f further includes a fourth duct f4. Viewed along the direction X from the first end 1a to the second end 1b, the fourth duct f4 is disposed between the first duct group and the second duct group, and is located on the side of the third duct f3 facing away from the first duct group. The fourth duct f4 includes a second main duct f41, a plurality of third branch ducts f42, and a plurality of fourth branch ducts f43, with the second main duct f41 extending along the second direction Z. One end of the third branch air duct f42 is connected to the first end of the second main air duct f41 on the side away from the first air duct group. One end of the fourth branch air duct f43 is connected to the second end of the second main air duct f41 on the side away from the first air duct group. The end of the third branch air duct f42 away from the second main air duct f41 is bent in the first direction Y and is arranged in an arc shape. The opening of the third branch air duct f42 away from the second main air duct f41 is located at the edge of the fifth end 41c. The end of the fourth branch air duct f43 away from the second main air duct f41 is bent in the first direction Y and is arranged in an arc shape. The opening of the second branch air duct f33 away from the second main air duct f41 is located at the edge of the sixth end 41d.

[0035] In some embodiments, the fourth air duct f4 and the third air duct f3 are arranged symmetrically about the second axis z2.

[0036] In some embodiments, the first branch air duct f32 and the second branch air duct f33 are arranged symmetrically about the first axis z1.

[0037] In some embodiments, the third branch duct f42 and the fourth branch duct f43 are arranged symmetrically about the first axis z1.

[0038] Please see Figure 1 , Figure 2 and Figure 4 In some embodiments, the anode 32 includes a target 321 and a heat dissipation part 322. The heat dissipation part 322 is sleeved on the target 321. The inner shell 2 is provided with a through hole 21. The target 321 is connected to the heat sink 4 through the through hole 21. Along the direction from the second end 1b to the first end 1a, the heat dissipation part 322 abuts against the heat sink 4 through the through hole 21. By providing the heat dissipation part 322 sleeved on the target 321, the heat dissipation part 322 is connected to the heat sink 4. The heat dissipation part 322 absorbs the heat of the target 321 through direct contact and transfers it to the heat sink 4, which is beneficial to improving the heat dissipation effect on the target 321.

[0039] In some embodiments, along the direction from the second end 1b to the first end 1a, the heat dissipation portion 322 abuts against the surface of the heat dissipation plate 41 facing the inner shell 2.

[0040] In some embodiments, the X-ray tube 3 includes a housing 31, an anode 32, and a cathode 33. The housing 31 has a vacuum chamber g. The anode 32 includes a target 321 and a heat sink 322. The target 321 extends through one end of the housing 31, with one end located within the vacuum chamber g. The other end of the target 321 extends out of the housing 31. The heat sink 322 is fitted over the portion of the target 321 extending out of the housing 31. The cathode 33 includes a lampshade 331 and a filament 332. The lampshade 331 is located at the end of the vacuum chamber g away from the target 321. The filament 332 is located inside the lampshade 331, with the opening of the lampshade 331 facing the target 321. During operation, the cathode 33 is energized, and the filament 332 heats up and emits electrons. The high voltage between the cathode 33 and the anode 32 causes the electrons to accelerate and bombard the target 321, generating X-rays.

[0041] In some embodiments, the X-ray generator 1000 includes a mounting bolt 6, which is screwed onto one end of the target body 321 extending out of the housing 31 in a direction X from the first end 1a to the second end 1b.

[0042] In some embodiments, the X-ray generator 1000 includes a control board 7 disposed within the first end 1a, and a fan 5 disposed between the control board 7 and the inner housing 2. The control board 7 is electrically connected to the fan 5. The control board 7 is used to provide a stable power supply to the electrical components, perform data processing, and facilitate communication. Integrating the control board 7 into the housing 1, compared to a separate configuration, improves space utilization and allows for heat dissipation via airflow driven by the fan 5, thus enhancing the reliability of the control board 7's operation.

[0043] In some embodiments, the X-ray generator 1000 includes a high-voltage plate 8, which is disposed in the second cavity d. The control plate 7 is electrically connected to the high-voltage plate 8, and the high-voltage plate 8 is electrically connected to the X-ray tube 3.

[0044] Please see Figure 1 , Figure 2 , Figure 4 and Figure 5 In some embodiments, the housing 1 includes a first end plate 11 and a second end plate 12 disposed opposite to each other along a direction X from the first end plate 1a to the second end plate 1b, and a side panel connected between the first end plate 11 and the second end plate 12.

[0045] In some embodiments, the substrate of the control board 7 is fixed to the first end plate 11, the power device of the control board 7 (not shown) is disposed on the side of the substrate facing away from the first end plate 11, and the air inlet b is disposed on the side panel near the first end plate 11.

[0046] In some embodiments, the side panel includes a top plate 131 and a bottom plate 132 disposed opposite to each other along a first direction Y, and a front plate 133 and a rear plate 134 disposed opposite to each other along a second direction Z.

[0047] In some embodiments, the first heat dissipation duct e includes a first part e1 and a second part e2. Along the first direction Y, the gap between the top plate 131 and the inner shell 2 forms the first part e1, and the gap between the bottom plate 132 and the inner shell 2 forms the second part e2.

[0048] In some embodiments, the air inlet b includes a first air inlet b1 disposed on the top plate 131, a second air inlet (not shown) disposed on the bottom plate 132, and a third air inlet b3 disposed on the rear end plate 134, and the air outlet c is disposed on the second end plate 12.

[0049] In some embodiments, the first air inlet b1 is composed of a plurality of strip holes arranged along the second direction Z, the second air inlet is composed of a plurality of strip holes arranged along the second direction Z, the third air inlet b3 is composed of a plurality of strip holes arranged along the first direction Y, and the air outlet c is composed of a plurality of circular holes arrayed on the second end plate 12.

[0050] In some embodiments, the front-end board 133 is provided with a connector 1331, which is electrically connected to the control board 7. The connector 1331 is used to provide an external device with an electrical connection to the control board 7.

[0051] In some embodiments, a partition plate 14 is provided between the first end plate 11 and the second end plate 12, and the fan 5 passes through the partition plate 14.

[0052] In some embodiments, the front end plate 133 is provided with a ray window 1332 for X-rays to pass through.

[0053] Based on the same inventive concept, this application also provides a detection device, including the X-ray generator 1000 in any of the above embodiments.

[0054] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. An X-ray generator, characterized in that, include: The outer shell has a first cavity. The outer shell includes a first end and a second end that are disposed opposite to each other. The first end has an air inlet and the second end has an air outlet. The air inlet and the air outlet are connected to the first cavity. The inner shell has a second cavity, which is disposed within the first cavity, and a first heat dissipation duct is provided between the inner shell and the outer shell; A radiation tube is located in the second cavity, which is filled with thermally conductive adhesive. A heat sink is provided on the side of the inner shell facing the first end, and the anode of the ray tube is connected to the heat sink; A fan is located on the side of the radiator facing away from the inner shell, and the fan is used to drive gas to flow from the first end to the second end.

2. The X-ray generator according to claim 1, characterized in that, The radiator includes a heat sink plate and multiple heat sink fins. The heat sink plate abuts against the surface of the inner shell facing the first end. The heat sink fins protrude from the surface of the heat sink plate facing away from the inner shell. A second heat dissipation air duct is formed between adjacent heat sink fins.

3. The X-ray generator according to claim 2, characterized in that, The second heat dissipation air duct includes a plurality of first air ducts and a plurality of second air ducts. The plurality of first air ducts are arranged along a first direction to form a first air duct group, and the plurality of second air ducts are arranged along the first direction to form a second air duct group. Looking from the first end to the second end, the middle part of the first air duct protrudes in an arc shape in the first direction, and the middle part of the second air duct protrudes in an arc shape in the opposite direction to the first direction. The projection of the fan outlet is located in the middle area between the first air duct and the second air duct in the direction from the first end to the second end. Wherein, the first direction is perpendicular to the direction from the first end to the second end.

4. The X-ray generator according to claim 3, characterized in that, Viewed from the first end to the second end, the first air duct is symmetrical about the first axis, the second air duct is symmetrical about the first axis, and the first air duct group and the second air duct group are symmetrical about the second axis. Wherein, the first axis is perpendicular to the first direction, and the second axis is parallel to the first direction.

5. The X-ray generator according to claim 4, characterized in that, Viewed from the first end to the second end, the heat sink includes a third end and a fourth end that are arranged opposite to each other in the first direction, and a fifth end and a sixth end that are arranged opposite to each other in the second direction; The first air duct group includes at least one first air duct with openings at both ends located at the edge of the third end, and at least one first air duct with openings at both ends located at the edge of the fifth end and the edge of the sixth end, respectively. The second air duct group includes at least one second air duct with openings at both ends located at the edge of the fourth end, and at least one second air duct with openings at both ends located at the edge of the fifth end and the edge of the sixth end, respectively. The first direction, the second direction, and the direction from the first end to the second end are all perpendicular to each other.

6. The X-ray generator according to claim 5, characterized in that, The second heat dissipation air duct also includes a third air duct. Viewed from the first end to the second end, the third air duct is located between the first air duct group and the second air duct group. The third air duct includes a first main air duct, several first branch air ducts, and several second branch air ducts. The first main air duct extends along the second direction. One end of the first branch air duct is connected to the side of the first main air duct facing away from the second air duct group. One end of the second branch air duct is connected to the side of the first main air duct facing away from the second air duct group. The other end of the first branch air duct is bent in an arc shape in the opposite direction to the first direction. The opening of the other end of the first branch air duct is located at the edge of the fifth end. The other end of the second branch air duct is bent in an arc shape in the opposite direction to the first direction. The opening of the other end of the second branch air duct is located at the edge of the sixth end.

7. The X-ray generator according to claim 6, characterized in that, The second heat dissipation air duct also includes a fourth air duct. Viewed from the first end to the second end, the fourth air duct is located between the first air duct group and the second air duct group. The fourth air duct is located on the side of the third air duct away from the first air duct group. The fourth air duct includes a second main air duct, several third branch air ducts, and several fourth branch air ducts. The second main air duct extends along the second direction. One end of the third branch air duct is connected to the side of the second main air duct away from the first air duct group. One end of the fourth branch air duct is connected to the side of the second main air duct away from the first air duct group. The other end of the third branch air duct is bent in an arc shape in the first direction. The opening of the other end of the third branch air duct is located at the edge of the fifth end. The other end of the fourth branch air duct is bent in an arc shape in the first direction. The opening of the other end of the second branch air duct is located at the edge of the sixth end. The fourth air duct and the third air duct are arranged symmetrically about the second axis; and / or The first branch duct and the second branch duct are arranged symmetrically about the first axis; and / or The third branch air duct and the fourth branch air duct are arranged symmetrically about the first axis.

8. The X-ray generator according to claim 1, characterized in that, The anode includes a target and a heat dissipation part. The heat dissipation part is sleeved on the target. The inner shell is provided with a through hole. The target is connected to the heat sink through the through hole. Along the direction from the second end to the first end, the heat dissipation part abuts against the heat sink through the through hole.

9. The X-ray generator according to claim 1, characterized in that, The X-ray generator includes a control board and a high-voltage board. The high-voltage board is disposed in the second cavity, the control board is disposed in the first end, and the fan is disposed between the control board and the inner shell. The control board is electrically connected to the high-voltage board and the fan, and the high-voltage board is electrically connected to the X-ray tube.

10. The X-ray generator according to claim 9, characterized in that, The housing includes a first end plate, a second end plate, and a side panel. The first end plate and the second end plate are arranged opposite each other along the direction from the first end to the second end. The side panel is connected between the first end plate and the second end plate. The base plate of the control board is fixed to the first end plate. The power devices of the control board are disposed on the side of the base plate of the control board facing away from the first end plate. The air inlet is disposed on the part of the side panel near the first end plate.

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