CT detector

Abstract

The utility model discloses a CT (computed tomography) detector which comprises a shell, a temperature adjusting air duct is arranged in the shell, the shell comprises a first side wall, and the first side wall is provided with an air inlet area and an air outlet area which are communicated with the temperature adjusting air duct; the detection module is suitable for detecting X rays and is arranged in the temperature adjusting air duct; the signal processing module is arranged in the temperature adjusting air duct and is in communication connection with the detection module; the detection module and the signal processing module are arranged in a spaced mode, and the back face of the incident face of the detection module and the board face of a circuit board of the signal processing module face the first side wall; and the fan module is used for driving air in the temperature adjusting air duct to flow so as to adjust the temperature of the detection module and the signal processing module. According to the CT detector provided by the utility model, the heat dissipation efficiency of the interior of the CT detector is improved, and the working stability of the detection module is improved.

Description

Technical Field

[0001] The present application relates to the field of scanning imaging devices, and in particular to a CT detector. Background Art

[0002] CT detectors in related technologies usually include: a detection module that receives X-ray signals and a signal processing module that processes X-ray information. When the CT detector is working, both the detection module and the signal processing module will generate a lot of heat, causing the temperature inside the CT detector to rise continuously. The characteristics of the scintillator and photodiode in the detection module will change due to temperature changes. Therefore, if the temperature inside the CT detector is too high, it will affect the detection performance of the CT detector and produce image artifacts.

[0003] In order to improve the above technical problems, it is necessary to design an efficient temperature control system in the CT detector system to ensure the normal operation of the CT detector. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a CT detector, which improves the heat dissipation efficiency inside the CT detector and improves the working stability of the detection module.

[0005] A CT detector according to an embodiment of the utility model includes: a shell, a temperature-controlled air duct is arranged in the shell, the shell includes a first side wall, the first side wall is provided with an air inlet area and an air outlet area connected to the temperature-controlled air duct; a detection module suitable for detecting X-rays, the detection module is arranged in the temperature-controlled air duct; a signal processing module, the signal processing module is arranged in the temperature-controlled air duct and is communicatively connected with the detection module; the detection module and the signal processing module are arranged at intervals, and the back side of the incident surface of the detection module and the board surface of the circuit board of the signal processing module face the first side wall; a fan module, the fan module is used to drive the air flow in the temperature-controlled air duct to adjust the temperature of the detection module and the signal processing module.

[0006] According to the CT detector of the embodiment of the utility model, the detection module and the signal processing module are both arranged in the temperature-adjusting air duct, so that when the air flows in the temperature-adjusting air duct, the temperature of the detection module and the signal processing module can be adjusted at the same time, so that each part is kept at a reasonable temperature, thereby ensuring the consistency of the working response of each part.

[0007] In actual work, the detection module and the signal processing module can be cooled, thereby improving the heat dissipation efficiency inside the CT detector; the signal processing module is arranged on the side of the detection module close to the air outlet area, so that the air blows to the detection module first and then to the signal processing module, thereby ensuring that the detection module has good heat dissipation performance while avoiding the influence of the heat generated by the signal processing module on the detection module, thereby improving the working stability of the detection module.

[0008] In some embodiments, along the preset second direction, the arrangement order of the air inlet area and the air outlet area, and the arrangement order of the detection module and the signal processing module are consistent, so that the temperature of the detection module is adjusted preferentially.

[0009] In some embodiments, the CT detector further includes: a first mounting member, the detection module is mounted on the first mounting member, and the first mounting member is fixed to the shell; a second mounting member, the signal processing module is mounted on the second mounting member, the second mounting member is fixed to the shell, and the second mounting member is spaced apart from the first mounting member to define a thermal insulation gap.

[0010] In some embodiments, the CT detector further includes: a thermal insulation material piece, and the first mounting piece and the second mounting piece are fixedly connected via the thermal insulation material piece.

[0011] In some embodiments, the detection module includes a plurality of detection units arranged along a preset first direction, the signal processing module includes a plurality of circuit boards arranged along the first direction, and each of the plurality of detection units is respectively communicatively connected to the corresponding circuit board; the fan module includes a plurality of fans with independently adjustable speeds, and the plurality of fans are arranged along the first direction and are respectively corresponding to the plurality of detection units and the plurality of circuit boards.

[0012] In some embodiments, a heating module extending along the first direction is provided on the first mounting member, and the heating module is suitable for heating the detection module; the heating module includes a first heating part, a second heating part and a third heating part, and the first heating part, the second heating part and the third heating part are arranged sequentially in the first direction, and the heating power of the second heating part is respectively smaller than the heating power of the first heating part and the third heating part.

[0013] In some embodiments, the first mounting member is provided with a avoidance opening for avoiding X-rays, and the heating module is arranged on an inner wall of the avoidance opening.

[0014] In some embodiments, the fan module is arranged in the air inlet area and installed on the outside of the first side wall; the CT detector also includes an air guide plate fixed on the inner side of the first side wall, and the shell is provided with a second side wall connected to the first side wall. The air guide plate and the second side wall are arranged relative to each other to define an air guide channel, and the air guide channel extends from the air inlet area to the detection module, and the width of the air guide channel in the second direction gradually narrows along the air guiding direction.

[0015] In some embodiments, the air guide plate includes a first plate body, a second plate body, and a third plate body connected in sequence along the air guiding direction. Relative to the air inlet direction of the air inlet area, the first plate body and the third plate body are arranged in parallel, and the second plate body is arranged at an angle, so that the width of the second direction of the part corresponding to the second plate body on the air guide channel is monotonically narrowed along the air guiding direction, and the second plate body is arranged opposite to the air inlet area.

[0016] In some embodiments, in the second direction, the wind guide plate spans the detection module and the signal processing module, the first plate body 71 is close to an end of the signal processing module close to the detection module, and the third plate body 73 is close to an end of the detection module away from the signal processing module.

[0017] In some embodiments, the detection module includes a plurality of detection units arranged along a preset first direction, and the signal processing module is provided with a plurality of connection positions arranged along the first direction. The detection units and the connection positions are communicated with each other through sheet-like or plate-like connecting parts in a one-to-one correspondence, and the plurality of connecting parts are arranged at intervals along the first direction so that the airflow of the temperature control air duct flows through the gaps between the plurality of connecting parts.

[0018] In some embodiments, a shielding layer for shielding X-rays is disposed in the air guide plate to prevent the rays from leaking from the first side wall.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 Schematic diagram of a CT detector according to an embodiment of the utility model Figure 1 ;

[0022] Figure 2 is a cross-sectional view of a CT detector according to an embodiment of the utility model;

[0023] Figure 3 is an exploded view of a CT detector according to an embodiment of the utility model;

[0024] Figure 4 is a schematic diagram of the mounting frame;

[0025] Figure 5 This is an exploded view of the mounting bracket;

[0026] Figure 6 Schematic diagram of a CT detector according to an embodiment of the utility model Figure 2 ;

[0027] Figure 7 It is the assembly drawing of the heating module and the mounting frame;

[0028] Figure 8 is a front view of the heating module;

[0029] Fig. 9 It is an exploded view of the detection unit;

[0030] Fig.10 It is the assembly drawing of the outer cover and the air deflector;

[0031] Fig.11 is a schematic diagram of an air deflector.

[0032] Reference numerals: 100, CT detector; 1, detection module; 11, detection unit; 111, rear collimator; 112, photosensitive unit; 113, fixing frame; 114, connecting piece; 115, connecting position; 2, signal processing module; 21, circuit board; 3, housing; 31, temperature-adjusting air duct; 32, air inlet area; 33, air outlet area; 34, incident part; 35, substrate; 36, first shielding wall; 361, shading plate; 362, shielding plate; 363, first pressing plate; 364, second pressing plate; 37, outer cover; 371. First side wall; 372. Second side wall; 373. Mounting plate; 4. Fan module; 5. Mounting frame; 51. First mounting member; 511. Avoidance opening; 52. Second mounting member; 53. Insulation gap; 54. Insulation material member; 541. First connecting member; 542. Second connecting member; 543. Third connecting member; 6. Heating module; 61. First heating part; 62. Second heating part; 63. Third heating part; 7. Wind guide plate; 71. First plate body; 72. Second plate body; 73. Third plate body. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Reference below Figure 1-Figure 11 A CT detector 100 according to an embodiment of the present invention is described.

[0037] Reference Figure 1 , Figure 2 and Figure 3According to the embodiment of the utility model, the CT detector 100 includes: a detection module 1 and a signal processing module 2, wherein the detection module 1 is suitable for detecting X-rays and converting X-ray signals into electrical signals; the signal processing module 2 is communicatively connected with the detection module 1, and the signal processing module 2 is used to receive and process the electrical signals transmitted by the detection module 1 to form image information. The CT detector 100 also includes: a shell 3 and a fan module 4, wherein a temperature-adjusting air duct 31 is arranged in the shell 3, and the shell 3 is also provided with an air inlet area 32 and an air outlet area 33 connected to the temperature-adjusting air duct 31, the detection module 1 and the signal processing module 2 are both arranged in the temperature-adjusting air duct 31, and the signal processing module 2 is located on the side of the detection module 1 close to the air outlet area 33, and the fan module 4 is used to drive the air flow in the temperature-adjusting air duct 31.

[0038] It should be understood that the shell 3 is provided with an incident portion 34 for X-rays to enter the interior of the shell 3, so that the X-rays can enter the shell 3 through the incident portion 34 to be detected by the detection module 1. The parts of the shell 3 other than the incident portion 34 are all provided with a shielding layer for shielding X-rays to avoid X-ray leakage, thereby ensuring the safety of the CT detector 100. In some embodiments, the shielding layer is lead sheet, and the parts of the shell 3 other than the incident portion 34 are all sandwich structures, with lead sheet in the middle and metal plates on both sides, which are fixed together by bonding. In some other embodiments, the shell 3 can also be provided with only one layer of metal plate, and the lead sheet is fixed to the shell 3 by bonding, clamping, etc., and the present application is not limited to this.

[0039] Furthermore, along the preset second direction, the arrangement order of the air inlet area 32 and the air outlet area 33 is consistent with the arrangement order of the detection module 1 and the signal processing module 2, so that the temperature of the detection module 1 is adjusted first. Figure 2 As shown, in the second direction, the signal processing module 2 is on the left and the detection module 1 is on the right, and the air outlet area 33 is on the left and the air inlet area 32 is on the right. In other embodiments, the signal processing module 2 is on the right and the detection module 1 is on the left, and the air outlet area 33 is on the right and the air inlet area 32 is on the left. In the above two embodiments, the air inlet area 32 corresponds to the detection module 1 on one side, and the signal processing module 2 corresponds to the air outlet area 33 on the other side, so that the airflow in the temperature-adjusting air duct 31 preferentially adjusts the temperature of the detection module 1.

[0040] In some other embodiments, in the second direction, the detection module 1 and the signal processing module 2 are distributed between the air inlet area 32 and the air outlet area 33. The detection module 1 is arranged close to the air inlet area 32, and the signal processing module 2 is located on the side of the detection module 1 close to the air outlet area 33. In this way, the airflow in the temperature control air duct 31 can preferentially control the temperature of the detection module 1.

[0041] When the CT detector 100 in the embodiment of the present application is working, the external X-rays enter the housing 3 through the incident part 34 to be received by the detection module 1. The detection module 1 converts the received X-ray signal into an electrical signal and transmits it to the signal processing module 2. The signal processing module 2 collects and processes the electrical signal to form image information. While the detection module 1 and the signal processing module 2 are working, the fan module 4 drives the air to enter the temperature-adjusting air duct 31 through the air inlet area 32. The air entering the temperature-adjusting air duct 31 flows through the detection module 1 and the signal processing module 2 in turn and is discharged through the air outlet area 33. When the air flows through the detection module 1 and the signal processing module 2, it continuously takes away the heat generated by the detection module 1 and the signal processing module 2, so as to ensure that the detection module 1 and the signal processing module 2 are always in a suitable temperature environment, thereby ensuring the normal operation of the CT detector 100 and improving the accuracy of imaging.

[0042] Because the characteristics of the scintillator and photodiode in the detection module 1 are greatly affected by temperature, in the embodiment of the present application, the signal processing module 2 is arranged on the side of the detection module 1 close to the air outlet area 33, so that the air blows to the detection module 1 first and then blows to the signal processing module 2. While ensuring that the detection module 1 has good heat dissipation performance, the heat generated by the signal processing module 2 is avoided from affecting the detection module 1, thereby further ensuring the working stability of the detection module 1.

[0043] According to the CT detector 100 of the embodiment of the utility model, the detection module 1 and the signal processing module 2 are both arranged in the temperature-adjusting air duct 31, so that when the air flows in the temperature-adjusting air duct 31, the detection module 1 and the signal processing module 2 can be cooled at the same time, thereby improving the heat dissipation efficiency inside the CT detector 100; the signal processing module 2 is arranged on the side of the detection module 1 close to the air outlet area 33, so that the air is first blown to the detection module 1 and then to the signal processing module 2, while ensuring that the detection module 1 has good heat dissipation performance, the heat generated by the signal processing module 2 is avoided from affecting the detection module 1, thereby improving the working stability of the detection module 1.

[0044] The preset first direction and second direction involved in this application are mutually perpendicular directions and are set in no particular order. The perpendicular second direction can be determined based on the preset first direction, or the perpendicular first direction can be determined based on the preset second direction.

[0045] Reference Figure 1 , Figure 2 and Figure 3 The shell 3 includes a first side wall 371, and the first side wall 371 is provided with an air inlet area 32 and an air outlet area 33 connected to the temperature adjustment air duct 31, and the air inlet area 32 and the air outlet area 33 are arranged at intervals along a preset second direction.

[0046] The detection module 1 and the signal processing module 2 are spaced apart along the second direction to avoid direct heat transfer between the two by heat conduction. Figure 2 As shown, the signal processing module 2 is located on a side of the detection module 1 close to the air outlet area 33.

[0047] The back of the incident surface of the detection module 1 and the board surface of the circuit board 21 of the signal processing module 2 face the first side wall 371. By setting the relative positions of the detection module 1 and the signal processing module 2 and setting the orientation, the main temperature-adjusting airflow flows through the back of the incident surface of the detection module 1 and the board surface of the circuit board 21 of the signal processing module 2 in sequence, which can ensure that the working temperatures of various parts of the detection module 1 and the signal processing module 2 are in a suitable state.

[0048] like Figure 3 As shown, the incident surface of the detection module 1 is the side that receives the radiation, that is, the lower surface of the detection module 1 in the figure, and the back side of the incident surface of the detection module 1 is the side that is opposite to the incident surface, that is, the upper surface of the detection module 1 in the figure. The signal processing module 2 includes a circuit board 21, such as the multiple circuit boards 21 included in the module in the figure. This arrangement allows the temperature-adjusting airflow to sweep the back side and the board surface, and pass through the gap thereon, thereby improving the temperature-adjusting efficiency.

[0049] Reference Figure 2 , Figure 3 and Figure 4 In some embodiments, the signal processing module 2 and the detection module 1 are thermally insulated.

[0050] Because when the CT detector 100 is working, the heat generated by the detection module 1 is usually greater than the heat generated by the signal processing module 2. By providing a heat insulation between the signal processing module 2 and the detection module 1, it is avoided that a large amount of heat generated by the detection module 1 is transferred to the signal processing module 2. In other words, the detection module 1 can only dissipate heat mainly through the air driven by the fan module 4, which makes it easier to control the overall temperature of the detection module 1 and reduces the uneven temperature distribution of the detection module 1, thereby reducing the risk of image artifacts and improving the imaging quality of the CT detector 100.

[0051] In some embodiments, reference Figure 4 The CT detector 100 also includes: a first mounting member 51 and a second mounting member 52, the detector module is mounted on the first mounting member 51, the first mounting member 51 is fixed to the shell 3, the signal processing module 2 is mounted on the second mounting member 52, the second mounting member 52 is also fixed to the shell 3, and the second mounting member 52 is spaced apart from the first mounting member 51 to form a thermal insulation gap 53 between the second mounting member 52 and the first mounting member 51.

[0052] In the above technical solution, the detection module 1 and the signal processing module 2 are respectively installed on the first mounting member 51 and the second mounting member 52, and the first mounting member 51 and the second mounting member 52 are spaced apart, which effectively avoids heat exchange between the detection module 1 and the signal processing module 2 and facilitates controlling the overall temperature of the detection module 1.

[0053] Reference Figure 4 In some further embodiments, the CT detector 100 further includes: a heat insulating material piece 54, and the first mounting piece 51 and the second mounting piece 52 are fixedly connected through the heat insulating material piece 54, so that the first mounting piece 51 and the second mounting piece 52 form an integrated structure, thereby improving the stability of the detection module 1 and the signal processing module 2.

[0054] Through the above technical solution, the first mounting member 51 and the second mounting member 52 form an integral mounting frame 5. When assembling the CT detector 100, the detection module 1 and the signal processing module 2 are respectively mounted on the first mounting member 51 and the second mounting member 52 of the mounting frame 5, and then the mounting frame 5 is fixed to the shell 3. There is no need to fix the first mounting member 51 and the second mounting member 52 on the shell 3 respectively, which improves the assembly efficiency of the CT detector 100 and reduces the cost of the CT detector 100.

[0055] In some embodiments, the thermal insulation material 54 extends between the first mounting member 51 and the shell 3 to prevent the heat generated by the detection module 1 from being transferred to the shell 3 through the first mounting member 51, thereby effectively avoiding heat exchange between the detection module 1 and the shell 3 and facilitating the control of the overall temperature of the detection module 1.

[0056] Reference Figure 3 , Figure 7 and Fig. 9 In some embodiments, the detection module 1 includes a plurality of detection units 11 arranged along a preset first direction, and the plurality of detection units 11 are respectively connected to the signal processing module 2 in communication. Specifically, each detection unit 11 is respectively connected to the corresponding circuit board 21 in communication. The signal processing module 2 may include one circuit board 21 or may include multiple circuit boards 21. If the first direction is a curve, one flat circuit board, multiple flat circuit boards or a flexible circuit board may be selected. If the first direction is a straight line, multiple flat circuit boards or a flexible circuit board may also be selected.

[0057] The first mounting member 51 also extends along the first direction, and each detection unit 11 is fixed on the first mounting member 51. It should be noted that in the embodiment of the present application, the first direction is an arc direction, and in other embodiments, the first direction may also be a linear direction.

[0058] Specifically, the detection unit 11 is in the shape of an elongated strip, and the length direction of the detection unit 11 is perpendicular to the first direction, that is, the second direction. The two ends of the length direction of the detection unit 11 are respectively fixed to the first mounting member 51 by fasteners, wherein the fasteners can be screws, bolts and other parts, and the connection stability is high and the cost is low. Of course, the detection unit 11 can also be fixed to the first mounting member 51 by other methods such as welding, clamping, and bonding, and this application does not limit this.

[0059] Reference Figure 3 , Figure 4 and Figure 7 In some further embodiments, the second mounting member 52 also extends along the first direction, and the second mounting member 52 is arranged side by side with the first mounting member 51, and the arrangement direction of the first mounting member 51 and the second mounting member 52 is perpendicular to the first direction, that is, the second direction. The signal processing module 2 also extends along the first direction, so that the plurality of detection units 11 can be communicated with the signal processing module 2, and the wiring inside the CT detector 100 is convenient.

[0060] Reference Figure 3 , Figure 4 and Figure 5 In some specific embodiments, the heat insulating material member 54 includes: a first connecting member 541, a second connecting member 542 and a third connecting member 543. The first connecting member 541 is connected between the first mounting member 51 and the second mounting member 52 so that the first mounting member 51 and the second mounting member 52 form a whole. In addition, two first connecting members 541 are provided, and the two first connecting members 541 are distributed at both ends of the first direction, which further improves the stability of the connection between the first mounting member 51 and the second mounting member 52.

[0061] The second connecting member 542 is disposed on a side of the first mounting member 51 away from the second mounting member 52 to prevent heat exchange between the side of the first mounting member 51 away from the second mounting member 52 and the housing 3 .

[0062] Two third connecting members 543 are provided, and the two third connecting members 543 are respectively provided at two ends of the first mounting member 51 to avoid heat exchange between the ends of the first mounting member 51 and the housing 3 .

[0063] Furthermore, the third connecting member 543 extends along the arrangement direction of the first mounting member 51 and the second mounting member 52 , and the third connecting member 543 is also connected to the second mounting member 52 , which effectively improves the stability of the connection between the first mounting member 51 and the second mounting member 52 .

[0064] Reference Figure 1 , Figure 2 and Figure 3In some embodiments, the shell 3 includes: a substrate 35, a first shielding wall 36 and an outer cover 37, wherein the substrate 35 is arranged on a side of the mounting frame 5 away from the detection module 1, and the mounting frame 5 is fixed to the substrate 35 by fasteners; the first shielding wall 36 is located on a side of the mounting frame 5 away from the detection module 1, and the first shielding wall 36 is provided with an incident part 34 for X-rays to be incident; the outer cover 37 is respectively connected to the substrate 35 and the first shielding wall 36 to form an installation space between the outer cover 37, the substrate 35 and the first shielding wall 36, and the detection module 1 and the signal processing module 2 are both arranged in the installation space.

[0065] In the above technical solution, the housing 3 is composed of only three parts: a base plate 35 , a first shielding wall 36 and an outer cover 37 , and has a simple structure, thereby reducing the cost of the CT detector 100 .

[0066] In some specific embodiments, the first shielding wall 36 includes a shading plate 361 and a shielding plate 362, the shading plate 361 is arranged on the side of the first mounting member 51 facing away from the detection module 1, and the shading plate 361 is constructed to be able to transmit X-rays and block visible light, the shielding plate 362 is arranged on the side of the second mounting member 52 facing away from the signal processing module 2, and the shielding plate 362 is spliced ​​with the shading plate 361 to form the first shielding wall 36, that is, the shading plate 361 forms the incident part 34 of the shell 3.

[0067] The first mounting member 51 is provided with an escape opening 511 for evading X-rays. When the CT detector 100 is working, X-rays enter the housing 3 through the light shielding plate 361 and then are emitted to the detection module 1 through the escape opening 511 to be detected by the detection module 1.

[0068] In the above technical solution, the first shielding wall 36 has a simple structure, which reduces the cost of the housing 3 .

[0069] In some specific implementations, the shading plate 361 is a carbon fiber shading plate. In other embodiments, the shading plate 361 can also be made of other shading materials, which is not limited in the present application.

[0070] Reference Figure 2 , Figure 3 and Figure 6 In some specific embodiments, the CT detector 100 further includes: a first pressing plate 363 and a second pressing plate 364, wherein the first pressing plate 363 is disposed on a side of the shading plate 361 away from the mounting frame 5, and the first pressing plate 363 is fixed to the mounting frame 5 by fasteners, thereby fixing the shading plate 361 to the mounting frame 5, and the second pressing plate 364 is disposed on a side of the shielding plate 362 away from the mounting frame 5, and the second pressing plate 364 is fixed to the mounting frame 5 by fasteners, thereby fixing the shielding plate 362 to the mounting frame 5.

[0071] Through the above technical solution, the mounting frame 5 is directly fitted with the first shielding wall 36, which reduces the internal space of the shell 3 and is conducive to the miniaturization of the CT device.

[0072] Reference Figure 7 and Figure 8 In some embodiments, a heating module 6 extending along the first direction is disposed on the first mounting member 51 , and the heating module 6 is suitable for heating the detection module 1 .

[0073] When the temperature of the detection module 1 is lower than the working temperature, the heating module 6 can work to heat the detection module 1; when the temperature of the detection module 1 is higher than the working temperature, the fan module 4 can work to achieve heat dissipation of the detection module 1. The cooperation of the heating module 6 and the fan module 4 ensures that the detection module 1 is always within a suitable temperature range, thereby ensuring the stable operation of the detection module 1 and thus ensuring the imaging quality of the CT detector 100. In addition, in the embodiment of the present application, the heating module 6 is arranged on the first mounting member 51, shortening the distance between the heating module 6 and the detection module 1, and effectively accelerating the heating speed of the heating module 6.

[0074] In some embodiments, the first mounting member 51 is provided with an avoidance opening 511 for avoiding X-rays, and the heating module 6 is arranged on the inner wall of the avoidance opening 511, which further shortens the distance between the heating module 6 and the detection module 1 and further accelerates the heating speed of the heating module 6.

[0075] In some specific embodiments, heating modules 6 are disposed on two opposite inner walls of the avoidance opening 511 , and the two heating modules 6 heat the detection module 1 together, further accelerating the heating speed of the heating modules 6 .

[0076] In some embodiments, the heating module 6 includes a first heating part 61, a second heating part 62 and a third heating part 63. The first heating part 61, the second heating part 62 and the third heating part 63 are arranged sequentially in the first direction, and the heating power of the second heating part 62 is smaller than that of the first heating part 61 and the third heating part 63.

[0077] The multiple detection units 11 of the detection module 1 are arranged along the first direction. When the detection module 1 is working, the multiple detection units 11 generate heat at the same time, and the heat dissipation performance of the middle part of the detection module 1 is lower than the heat dissipation performance of the two ends of the detection module 1. The second heating part 62 in the embodiment of the present application is used to heat the middle part of the detection module 1, and the first heating part 61 and the third heating part 63 are used to heat the two ends of the detection module 1 respectively. This design meets the temperature adjustment performance of the detection module 1, facilitates the uniform temperature distribution of the entire detection module 1, and is conducive to improving the imaging quality of the CT detector 100.

[0078] In some specific embodiments, heating wires are provided inside the first heating part 61, the second heating part 62 and the third heating part 63, and the heating wires of the three parts are connected in sequence, the density of the heating wires of the first heating part 61 is greater than the density of the heating wires of the second heating part 62, and the density of the heating wires of the third heating part 63 is also greater than the density of the heating wires of the second heating part 62.

[0079] The heating module 6 in the above technical solution has a simple structure, which reduces the cost of the CT detector 100 .

[0080] Reference Figure 1 , Figure 2 and Figure 3 In some embodiments, the detection module 1 includes a plurality of detection units 11 arranged along a preset first direction, the signal processing module 2 includes a plurality of circuit boards 21 arranged along the first direction, and each detection unit 11 is respectively connected to the corresponding circuit board 21; the fan module 4 includes a plurality of fans with independently adjustable speeds, the plurality of fans are arranged along the first direction, and are respectively arranged corresponding to the plurality of detection units 11 and the plurality of circuit boards 21. Each fan may correspond to a detection unit 11 or a plurality of adjacent detection units 11 and a circuit board 21 or a plurality of adjacent circuit boards 21, so that different areas on the detection module 1 and the signal processing module 2 can be independently controlled, the blowing efficiency can be improved for places with higher temperatures, and the blowing efficiency can be reduced or even turned off for places with lower temperatures, so as to improve the temperature control efficiency and the balance of the temperature control of each part in the first direction.

[0081] Through the above technical solution, each fan can independently control the temperature adjustment of the corresponding detection unit 11. For example, when it is detected that the temperature of some detection units 11 is too high, while the temperature of some detection units 11 is moderate, at this time, it is only necessary to increase the speed of the fan corresponding to the detection unit 11 with too high temperature, so as to increase the wind speed of the air flowing through the detection unit 11 with too high temperature, accelerate the heat dissipation of the detection unit 11 with too high temperature, so that the overall temperature of the detection module 1 is within the appropriate temperature. By adjusting the temperature of each detection unit 11 of the detection module 1 in the first direction through multiple fans with independently adjustable speeds, the uniformity of the temperature of the detection module 1 is improved, the imaging quality of the CT detector 100 is improved, and the detection effect of the CT detector 100 is improved.

[0082] In specific applications, when the ambient temperature is too low, the heating wire can be used for heating, and the temperature of the detection module 1, the signal processing module 2 and the surrounding environment can be quickly increased by the fan module 4. The temperature uniformity of the detection module 1 and the signal processing module 2 can be adjusted by an independent fan, thereby improving the consistency of the response.

[0083] Reference Figure 1 , Figure 2 and Figure 3 In some specific embodiments, the outer cover 37 includes a first side wall 371, which is opposite to the detection module 1 and the signal processing module 2. The first side wall 371 is provided with an air inlet area 32 and an air outlet area 33 spaced apart along a second direction, wherein the second direction is perpendicular to the first direction, the air inlet area 32 is located at one end of the first side wall 371 close to the detection module 1, and the air outlet area 33 is located at one end of the first side wall 371 close to the signal processing module 2.

[0084] The air inlet area 32 includes a plurality of air inlets spaced apart along a first direction, each air inlet is provided with a fan, and the air outlet area 33 includes a plurality of air outlet holes spaced apart along the first direction.

[0085] Through the above technical solution, the wind in the temperature-adjusting air duct 31 can maintain a flow direction roughly perpendicular to the first direction, which is conducive to the wind driven by the fan blowing only toward the corresponding detection unit 11 as much as possible, thereby ensuring the uniformity of the temperature of the detection module 1.

[0086] Reference Fig. 9 In some embodiments, the detection unit 11 includes: a rear collimator 111, a photosensitive unit 112 and a fixing frame 113. The rear collimator 111 is arranged toward the avoidance opening 511. The rear collimator 111 is used to guide the X-ray to the photosensitive unit 112. The photosensitive unit 112 is used to convert the X-ray signal into an electrical signal. The rear collimator 111 and the photosensitive unit 112 are respectively mounted on the fixing frame 113 by fasteners, and both ends of the fixing frame 113 are mounted on the first mounting member 51 by fasteners. The fixing frame 113 is provided with heat dissipation fins, and the extension direction of the heat dissipation fins is parallel to the second direction, that is, parallel to the flow direction of the air, which increases the contact area between the heat dissipation fins and the air, and effectively improves the heat dissipation efficiency of the detection unit 11. Refer to Figure 2 , Figure 7 and Fig. 9 In some embodiments, the detection module 1 includes a plurality of detection units 11 arranged along a preset first direction, and the signal processing module 2 is provided with a plurality of connection positions 115 arranged along the first direction. The detection units 11 and the connection positions 115 are communicated with each other through sheet-like or plate-like connectors 114 corresponding to each other. The plurality of connectors 114 are arranged at intervals along the first direction so that the airflow of the temperature control air duct 31 flows through the gaps between the connectors 114.

[0087] In some embodiments, each photosensitive unit 112 is electrically and communicatively connected to the signal processing module 2 via a connector 114, and the connector 114 is configured as a sheet or plate-like structure extending along the second direction. In the embodiment of the present application, by designing the connector 114 as a sheet-like structure extending along the second direction, an air duct can be defined between two adjacent connectors 114 to guide air to flow along the second direction, thereby reducing mutual interference when there is a wind speed difference between two adjacent fans, which is beneficial to the uniformity of the overall temperature of the detection module 1. The connector 114 can be a data transmission cable.

[0088] Reference Figure 2 , Fig.10 and Fig.11 In some embodiments, the CT detector 100 further includes: an air guide plate 7 , which is disposed in the housing 3 to guide the airflow entering from the air inlet area 32 to the detection module 1 .

[0089] In the above technical solution, the air flow direction in the shell 3 is limited by the air guide plate 7, reducing the disturbance of the air. Under the guidance of the air guide plate 7, the air entering the shell 3 is directly blown toward the detection module 1, effectively improving the heat dissipation efficiency of the detection module 1.

[0090] Reference Figure 1 , Figure 2 and Figure 3 , the fan module 4 is arranged in the air inlet area 32 and installed on the outside of the first side wall 371; the CT detector 100 also includes an air guide plate 7 fixed on the inside of the first side wall 371, and the air guide plate 7 and the shell 3 are provided with a second side wall 372 connected to the first side wall 371. The air guide plate 7 and the second side wall 372 are arranged relative to each other to define an air guide channel, and the air guide channel extends from the air inlet area 32 to the side of the detection module 1 close to the second side wall 372, and the width of the second direction of the air guide channel gradually narrows along the air guide direction. Under the action of the air guide plate 7, the air flow is guided to flow to the side of the detection module 1, so as to flow through the surface of the detection module 1 and the related gaps, and the surface of the signal processing module 2 and the related gaps in turn. It should be noted that the width of the second direction of the air guide channel gradually narrows along the air guide direction, which can be monotonically narrowed in the whole section; it can also be monotonically narrowed in some sections, and some sections remain unchanged; there may even be a small section expansion, but it can show a narrowing trend as a whole. This arrangement allows the airflow to gather toward the air outlet of the air guide channel under the restriction of the air guide plate, so that it can be blown toward the detection module 1 more efficiently.

[0091] like Figure 2As shown, the wind guide plate 7 includes a first plate body 71, a second plate body 72 and a third plate body 73 which are sequentially connected along the wind guiding direction. Relative to the wind inlet direction of the wind inlet area 32, the first plate body 71 and the third plate body 73 are arranged in parallel, and the second plate body 72 is arranged obliquely, so that the width of the second direction of the part corresponding to the second plate body 72 on the wind guide channel is monotonically narrowed along the wind guiding direction, and the second plate body 72 is arranged opposite to the wind inlet area 32. The fan module 4 blows the wind directly to the plate surface of the second plate body 72 through the wind inlet area 32, and adjusts the direction of the airflow under the restriction of the wind guide plate 7 and the second side wall 372, and then guides it through the third plate body 73 and blows it to the detection module 1 and the signal processing module 2. The wind guiding direction is the approximate direction of the movement and extension of the airflow corresponding to the wind guide plate 7 section during the guiding process, and the wind inlet direction refers to the wind direction out of the wind inlet area 32, which is roughly Figure 2 Middle up and down direction.

[0092] Furthermore, in the second direction, the air guide plate 7 spans the detection module 1 and the signal processing module 2, the first plate 71 is close to the end of the signal processing module 2 close to the detection module 1, and the third plate 73 is close to the end of the detection module 1 away from the signal processing module 2. Figure 2 The right end of the upper signal processing module 2 and the end with the deviation from the detection module 1 are Figure 2 At the left end of the upper signal processing module 2, the air guide plate 7 spans the detection module 1 and the signal processing module 2, that is, the first plate 71 is arranged corresponding to the signal processing module 2, and the third plate 73 is arranged corresponding to the detection module 1. It should be noted that in the present application, the end of A close to B means that B has two ends in the same direction, and one end of A to B is closer than the other end of A to B. That is to say, the end of the first plate 71 close to the signal processing module 2 is relative to the other end of the signal processing module 2 in the second direction, and the end of the third plate 73 close to the detection module 1 is relative to the other end of the detection module 1 in the second direction. A corner is formed between the second plate 72 and the third plate 73, and the direction and pressure of the airflow are further adjusted on the side away from the air guide channel to improve the temperature control efficiency of the detection module 1 and the signal processing module 2, especially the signal processing module 2.

[0093] The air guide channel is a section of the temperature adjustment channel 31 , and is a portion corresponding to the air guide plate 7 .

[0094] In some specific embodiments, the air guide plate 7 is located on the first side wall 371 and between the air inlet area 32 and the air outlet area 33 , and the free end of the air guide plate 7 is located on the side of the detection module 1 away from the air outlet area 33 to guide the air to the detection module 1 .

[0095] Through the above technical solution, under the guidance of the air guide plate 7, the air passing through the air inlet area 32 can only flow to the detection module 1 first, thereby ensuring the heat dissipation efficiency of the detection module 1.

[0096] In some further embodiments, a portion of the air guide plate 7 directly facing the air inlet area 32 extends obliquely toward a side of the detection module 1 away from the air inlet area 32 and away from the air outlet area 33 .

[0097] Through the above technical solution, the cross-sectional area of ​​at least part of the air duct from the air inlet area 32 to the detection module 1 is gradually reduced, thereby increasing the wind speed blowing to the detection module 1, avoiding the backflow of air flow, and ensuring the normal heat dissipation of the detection module 1.

[0098] In some specific embodiments, the air guide plate 7 extends as a whole along the first direction, that is, the air guide plate 7 is in an arc shape as a whole, which is adapted to the shape of the temperature-adjusting air duct 31. The air guide plate 7 includes, in the first direction, a first plate body 71, a second plate body 72, and a third plate body 73 connected in sequence, wherein the first plate body 71 is connected to the first side wall 371 by a fastener, the second plate body 72 extends obliquely toward a side away from the air inlet area 32 and toward the detection module 1 away from the air outlet area 33, and the third plate body 73 extends toward the detection module 1.

[0099] The air guide plate 7 in the above technical solution has a simple structure, which reduces the cost of the air guide plate 7.

[0100] In some embodiments, a shielding layer for shielding X-rays is provided inside the air guide plate 7 to prevent the rays from leaking from the first side wall 371, thereby ensuring the safety of the CT detector 100. In some embodiments, the shielding layer is lead sheet, and the air guide plate 7 adopts a sandwich structure, with lead sheet in the middle and metal plates on both sides, which are fixed together by bonding. In some other embodiments, the air guide plate 7 may also be provided with only one layer of metal plate, and the lead sheet is fixed to the metal plate by bonding, clamping, etc., and the present application is not limited to this.

[0101] Reference Figure 2 , Fig.10 and Fig.11 , a mounting plate 373 is provided inside the outer cover 37, and the air guide plate 7 is fixed to the inner side of the outer cover 37 by connecting the mounting plate 372 and the first plate body 71. Matching mounting holes are provided on the mounting plate 373 and the first plate body 71, and the two can be connected by screws, bolts or rivets. The mounting plate 373 and the first plate body 71 can have substantially the same shape.

[0102] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0103] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A CT detector (100), characterized in that: include: A shell (3), wherein a temperature-adjusting air duct (31) is arranged in the shell (3), and the shell (3) comprises a first side wall (371), and the first side wall (371) is provided with an air inlet area (32) and an air outlet area (33) which are in communication with the temperature-adjusting air duct (31); A detection module (1) suitable for detecting X-rays, the detection module (1) being arranged in the temperature-adjusting air duct (31); a signal processing module (2), the signal processing module (2) being arranged in the temperature-adjusting air duct (31) and being communicatively connected with the detection module (1); the detection module (1) and the signal processing module (2) being arranged at a distance, and the back side of the incident surface of the detection module (1) and the board surface of the circuit board (21) of the signal processing module (2) facing the first side wall (371); A fan module (4), the fan module (4) is used to drive the air flow in the temperature-adjusting air duct (31) to adjust the temperature of the detection module (1) and the signal processing module (2).

2. The CT detector (100) according to claim 1, characterized in that: Along the preset second direction, the arrangement order of the air inlet area (32) and the air outlet area (33) is consistent with the arrangement order of the detection module (1) and the signal processing module (2), so that the temperature of the detection module (1) is adjusted preferentially.

3. The CT detector (100) according to claim 1, characterized in that: The CT detector (100) further comprises: A first mounting member (51), the detection module (1) being mounted on the first mounting member (51), and the first mounting member (51) being fixed to the housing (3); A second mounting member (52), the signal processing module (2) being mounted on the second mounting member (52), the second mounting member (52) being fixed to the housing (3), the second mounting member (52) being spaced apart from the first mounting member (51) to define a heat insulation gap (53).

4. The CT detector (100) according to claim 3, characterized in that: The CT detector (100) further comprises: a heat insulating material piece (54), and the first mounting piece (51) and the second mounting piece (52) are fixedly connected via the heat insulating material piece (54).

5. The CT detector (100) according to claim 1, characterized in that: The detection module (1) comprises a plurality of detection units (11) arranged along a preset first direction; the signal processing module (2) comprises a plurality of circuit boards (21) arranged along the first direction; each of the plurality of detection units (11) is respectively connected to a corresponding circuit board (21); the fan module (4) comprises a plurality of fans with independently adjustable rotation speeds; the plurality of fans are arranged along the first direction and are respectively arranged corresponding to the plurality of detection units (11) and the plurality of circuit boards (21).

6. The CT detector (100) according to claim 3, characterized in that: A heating module (6) extending along a first direction is arranged on the first mounting member (51), and the heating module (6) is suitable for heating the detection module (1); the heating module (6) comprises a first heating part (61), a second heating part (62) and a third heating part (63), and the first heating part (61), the second heating part (62) and the third heating part (63) are arranged in sequence in the first direction, and the heating power of the second heating part (62) is respectively smaller than the heating power of the first heating part (61) and the heating power of the third heating part (63).

7. The CT detector (100) according to claim 6, characterized in that: The first mounting member (51) is provided with an avoidance opening (511) for avoiding X-rays, and the heating module (6) is arranged on the inner wall of the avoidance opening (511).

8. The CT detector (100) according to claim 2, characterized in that: The fan module (4) is arranged in the air inlet area (32) and installed on the outside of the first side wall (371); The CT detector (100) further comprises an air guide plate (7) fixed to the inner side of the first side wall (371); the housing (3) is provided with a second side wall (372) connected to the first side wall (371); the air guide plate (7) and the second side wall (372) are arranged relative to each other to define an air guide channel; the air guide channel extends from the air inlet area (32) to the detection module (1); and the width of the air guide channel in a second direction gradually narrows along the air guide direction.

9. The CT detector (100) according to claim 8, characterized in that: The wind guide plate (7) comprises a first plate body (71), a second plate body (72) and a third plate body (73) which are connected in sequence along the wind guide direction; relative to the wind inlet direction of the wind inlet area (32), the first plate body (71) and the third plate body (73) are arranged in parallel, and the second plate body (72) is arranged obliquely, so that the width of the second direction of the part of the wind guide channel corresponding to the second plate body (72) is monotonically narrowed along the wind guide direction, and the second plate body (72) is arranged opposite to the wind inlet area (32).

10. The CT detector (100) according to claim 9, characterized in that: In the second direction, the air guide plate (7) spans the detection module (1) and the signal processing module (2), the first plate body (71) is close to an end of the signal processing module (2) close to the detection module (1), and the third plate body (73) is close to an end of the detection module (1) away from the signal processing module (2).

11. The CT detector (100) according to any one of claims 1 to 10, characterized in that: The detection module (1) comprises a plurality of detection units (11) arranged along a preset first direction, the signal processing module (2) is provided with a plurality of connection positions (115) arranged along the first direction, the detection units (11) and the connection positions (115) are communicated in a one-to-one correspondence via sheet-shaped or plate-shaped connection members (114), and the plurality of connection members (114) are arranged at intervals along the first direction so that the airflow of the temperature-adjusting air duct (31) flows through the gaps between the plurality of connection members (114).

12. The CT detector (100) according to any one of claims 8 to 10, characterized in that: A shielding layer for shielding X-rays is provided inside the air guide plate (7) to prevent the rays from leaking from the first side wall (371).

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