CN112826517A - Cooling device for CT detector and CT equipment - Google Patents

Abstract

Translated fromChinese

本发明公开了一种用于CT探测器的散热装置及CT设备，属于CT探测器技术领域。该用于CT探测器的散热装置包括壳体、支架、转盘、封闭的探测器箱、内部散热结构和外部散热结构。所述转盘转动连接于所述支架，所述内部散热结构包括设置于所述探测器箱内部的气流源，所述气流源能够促进所述探测器箱内的空气流动以将探测器模块产生的热量传递至所述探测器箱的内壁。所述外部散热结构包括设置于所述支架内的环形的气流通道，所述探测器箱位于所述气流通道内，所述支架的外壁上设置有与所述气流通道连通的进气口和出气口。本发明能通过内部散热结构和外部散热结构的结合，能够提高探测器模块的散热效率。

The invention discloses a heat dissipation device and CT equipment for CT detectors, and belongs to the technical field of CT detectors. The heat dissipation device for a CT detector includes a casing, a bracket, a turntable, a closed detector box, an internal heat dissipation structure and an external heat dissipation structure. The turntable is rotatably connected to the bracket, and the internal heat dissipation structure includes an air flow source disposed inside the detector box, and the air flow source can promote the air flow in the detector box to dissipate the air generated by the detector module. Heat is transferred to the inner walls of the detector box. The external heat dissipation structure includes an annular air flow channel arranged in the bracket, the detector box is located in the air flow channel, and the outer wall of the bracket is provided with an air inlet and an outlet that communicate with the air flow channel. breath. The invention can improve the heat dissipation efficiency of the detector module through the combination of the internal heat dissipation structure and the external heat dissipation structure.

Description

Heat dissipation device for CT detector and CT equipment

Technical Field

The invention relates to the technical field of CT detectors, in particular to a heat dissipation device for a CT detector and CT equipment.

Background

CT imaging requires an X-ray generating device (a ray source for short) and a plurality of X-ray receiving devices (detector modules), and the ray source and a detector box in which the detector modules are installed are both installed on a turntable, so that they can scan one by one sections around a certain part of a human body together. The detector module and related electrical components generate a large amount of heat in the working process, and the accumulation of the heat in the detector box easily causes the over-high temperature in the box, thereby affecting the conversion efficiency of the detector on X rays and even affecting the work of the related electrical components.

At present, in order to prevent light, damp-proofing, dustproof, prevent that the X ray reveals etc, the detector box is mostly complete seal structure, leans on external cooling system to reduce detector box outer wall temperature and comes indirect heat dissipation, but the radiating efficiency is lower. In addition, in order to accelerate the heat dissipation of the detector box, a fan or an air conditioner with higher power is required to be used as an external heat dissipation system, so that the cost is increased and the fan or the air conditioner with higher power can generate higher noise.

For the CT used in the place with better external environment, the unclosed detector box and the direct cooling of the air outside the box can be adopted. However, even if the air inlet and outlet are provided with filter screens, fine dust and moisture are still brought in by the outside air, resulting in an increased failure rate of the detector.

Disclosure of Invention

The invention aims to provide a heat dissipation device for a CT detector, which can improve the heat dissipation efficiency in a detector box under the condition of using a closed detector box.

Another object of the present invention is to provide a CT apparatus, which can improve the heat dissipation efficiency of a detector box.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a heat abstractor for CT detector, includes the casing with set up in support, carousel and the confined detector case in the casing, the carousel rotate connect in the support still includes:

an internal heat dissipating structure comprising an airflow source disposed inside the detector box, the airflow source capable of promoting air flow within the detector box to transfer heat generated by a detector module to an interior wall of the detector box;

the detector box is positioned in the airflow channel, and an air inlet and an air outlet which are communicated with the airflow channel are arranged on the shell.

Preferably, two sides of the upper part of the shell are respectively provided with one air outlet; and the two sides of the lower part of the shell are respectively provided with one air inlet.

Preferably, the casing includes the barrel that is located its center, just the barrel passes the carousel center, the detector case connect in the carousel, and be located the barrel with between the support inner wall, the barrel outer wall, the carousel of barrel one end, the barrel other end the lateral wall of casing with the support inner wall forms jointly airflow channel.

Preferably, when the turntable stops rotating, one of the air inlets corresponds to the middle position of the detector box, one end of the detector box corresponds to the other air inlet, and the other end of the detector box corresponds to the one air outlet.

Preferably, the external heat dissipation structure further comprises a wind gathering structure, and the wind gathering structure is used for gathering the airflow entering the bracket from the air inlet and then blowing the airflow to the airflow channel.

Preferably, the wind gathering structure includes:

the wind gathering plate is arranged in the bracket and is positioned at the air inlet;

the air collecting cover is installed on the air collecting plate, and an outlet of the air collecting cover is rectangular.

Preferably, an external air inlet fan is arranged at the air inlet, and an external air outlet fan is arranged at the air outlet.

Preferably, the material of detector case is the aluminum alloy.

Preferably, the airflow source is a plurality of internal fans, the internal fans are arranged in the detector box, and the air outlet direction of the internal fans faces the detector module.

A CT device comprises the heat dissipation device for the CT detector.

The invention has the beneficial effects that:

the detector box is simultaneously cooled through the internal cooling structure and the external cooling structure, the internal cooling structure comprises the airflow source, and the airflow source is arranged inside the detector box, so that the air flow in the detector box can be promoted, the cooling efficiency is improved, and the heat can not be accumulated on the detector module; the external heat dissipation structure comprises an annular airflow channel, the detector box is positioned in the airflow channel, and the heat transfer of the detector box can be enhanced through the airflow in the airflow channel, so that the heat dissipation efficiency is improved; in addition, the detector box is of a closed structure and can prevent dust, moisture, light and X-ray leakage.

Drawings

FIG. 1 is a schematic perspective view of a heat dissipation device for a CT detector according to an embodiment of the present invention with one side of a housing removed;

FIG. 2 is a schematic perspective view of a heat dissipation device for a CT detector according to an embodiment of the present invention, with a housing and a cylinder removed;

fig. 3 is a schematic perspective view of a detector box of a heat dissipation device for a CT detector according to an embodiment of the present invention, with a cover plate on one side removed.

FIG. 4 is an enlarged schematic view of the structure at A in FIG. 3;

FIG. 5 is a schematic view of a heat dissipation device for a CT detector, with a side housing and a side barrel removed, showing a front view and a schematic view of an airflow direction when a turntable rotates according to an embodiment of the present invention;

FIG. 6 is a schematic perspective view of a wind collecting cover of a heat dissipation device for a CT detector according to an embodiment of the present invention;

FIG. 7 is a schematic view of a heat dissipation device for a CT detector, showing a front view of the heat dissipation device without a housing and a cylinder on one side and a schematic view of an airflow direction when a turntable stops rotating, according to an embodiment of the present invention;

FIG. 8 is a graph of temperature change of the detector module temperature, the detector box air flow temperature and the detector box temperature measured at different stages by thermocouples according to the present invention.

In the figure:

1. the detector comprises a support, a detector box, adetector 21, aninternal fan 22, adetector module 23, a heat dissipation plate 3, a wind gathering plate 4, a mounting plate 5, a cylinder body 6, a ray source 7, an air outlet 8, anair inlet 10, awind gathering cover 11, ashell 12 and a turntable;

A. the temperature of the detector module, B, the temperature of the air flow in the detector box, C and the temperature of the detector box body.

Detailed Description

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly and encompass, for example, both fixed and removable connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in direct contact with the second feature but being in contact with the second feature by another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying fig. 1-8.

The present embodiment provides a CT apparatus, as shown in fig. 1 to 2, including a heat dissipation device for a CT detector. The heat dissipation device for the CT detector comprises ashell 11, a support 1 arranged in theshell 11, a rotary table 12, a closeddetector box 2, an internal heat dissipation structure and an external heat dissipation structure, wherein the rotary table 12 is rotatably connected to the support 1. The holder 1 is disposed inside thehousing 11.

The internal heat dissipation structure includes an airflow source disposed inside thedetector box 2 that is capable of promoting airflow within thedetector box 2 to transfer heat generated by thedetector modules 22 to the interior walls of thedetector box 2.

The external heat dissipation structure comprises an annular airflow channel arranged in the support 1, thedetector box 2 is positioned in the airflow channel, and an air inlet 8 and an air outlet 7 which are communicated with the airflow channel are arranged on theshell 11.

In the embodiment, the airflow source is arranged in thedetector box 2, and the airflow source promotes the air flow in thedetector box 2, so that the heat generated by thedetector module 22 is transferred to the outside of the detector through the wall of thedetector box 2, and then is taken away through the airflow channel, and the combination of the internal heat dissipation structure and the external heat dissipation structure improves the heat dissipation efficiency and ensures that the heat is not accumulated on thedetector module 22; in addition,detector box 2 is enclosed construction, can prevent dust, dampproofing, lightproof and prevent that the X ray from revealing.

In order to enable the heat inside thedetector box 2 to be rapidly transferred to the outside of thedetector box 2, optionally, thedetector box 2 is made of aluminum alloy, and the heat conduction efficiency of the aluminum alloy is high.

As shown in fig. 3 and 4, the airflow source is a plurality ofinternal fans 21, the plurality ofinternal fans 21 are disposed in thedetector box 2, and the air outlet direction is toward thedetector module 22. Theheat dissipation plate 23 is mounted on the support metal plate of thedetector module 22, and theinternal fan 21 is located on the side of theheat dissipation plate 23. Since theinternal fan 21 is disposed inside the closeddetector box 2, noise is small.

In order to promote the exchange of hot air flow inside the bracket 1 and cold air flow outside, and improve the heat dissipation efficiency, optionally, two air outlets 7 are respectively arranged on two sides of the upper part of theshell 11; both sides of the lower part of theshell 11 are respectively provided with an air inlet 8. In order to allow the gas to reach the gas outlet 7 and the gas inlet 8 of thehousing 11, the parts of the support 1 corresponding to the gas inlet 8 and the gas outlet 7 of thehousing 11 are likewise provided with the gas inlet 8 and the gas outlet 7, respectively.

Further, theshell 11 comprises a cylinder 5 located at the center of the shell, the cylinder 5 penetrates through the center of the rotary table 12, thedetector box 2 is connected to the rotary table 12 and located between the cylinder 5 and the inner wall of the support 1, and an airflow channel is formed by the outer wall of the cylinder 5, the rotary table 12 at one end of the cylinder 5, the side wall of theshell 11 at the other end of the cylinder 5 and the inner wall of the support 1. Thedetector box 2 is a semi-arc structure arranged along the periphery of the rotary table 12, a mounting plate 4 is arranged on one side of the rotary table 12 opposite to thedetector box 2, the ray source 6 is mounted on the mounting plate 4, and two ends of the mounting plate 4 are in butt joint with two ends of thedetector box 2. Specifically, both ends of the cylinder 5 penetrate both opposite sides of thehousing 11. The cross-sections of both ends of thedetector box 2 are sequentially reduced towards the ends thereof, so as to facilitate the circulation of gas. When theturntable 12 rotates, the rotation of theturntable 12 generates a rotation airflow to dissipate heat from thedetector box 2, and as shown in fig. 5, the direction of the arrow in the figure is the airflow direction.

In order to accelerate the gas circulation when the rotary table 12 stops rotating, the heat dissipation effect is better, when the rotary table 12 stops rotating, one gas inlet 8 corresponds to the middle position of thedetector box 2, one end part of thedetector box 2 corresponds to the other gas inlet 8, and the other end part of thedetector box 2 corresponds to one gas outlet 7.

Further, the external heat dissipation structure further comprises a wind gathering structure, and the wind gathering structure is used for gathering the airflow entering the bracket 1 from the air inlet 8 and then blowing the airflow to the airflow channel. The heat of thedetector box 2 can be taken away quickly through the arrangement of the wind gathering structure, and is transferred through the airflow channel.

As shown in fig. 1, 2 and 6, the wind-gathering structure includes a wind-gathering plate 3 and a wind-gathering cover 10, the wind-gathering plate 3 is installed in the bracket 1 and is located at the air inlet 8; the wind-collectingcover 10 is installed on the wind-collecting plate 3, and the outlet of the wind-collectingcover 10 is rectangular. The outlet of theair collecting cover 10 is rectangular, so that the air flow is in a slender shape and is blown to the air flow passage, and the heat dissipation area of thedetector box 2 can be increased. Optionally, an external air inlet fan is disposed at the inlet of theair collecting cover 10, and an external air outlet fan is disposed at the air outlet 7. As shown in fig. 7, when the direction of the arrow in the figure is the gas flow direction and theturntable 12 stops rotating, the external heat radiation air flow can be formed by the external air inlet fan and the external air outlet fan.

As shown in fig. 8, stage 1 is a temperature curve when the internal heat dissipation structure and the external heat dissipation structure reach a basic thermal steady state in both working stages;stage 2 is the process of gradually reducing the external heat dissipation air volume; stage 3 is a basic thermal steady state process of the system again after the external heat dissipation is completely stopped; stage 4 is a thermally stable process when both internal and external heat dissipation stops working.

The temperature change curves of the temperature A of the detector module, the temperature B of the air flow in the detector box and the temperature C of the detector box are compared to obtain that:

the comparison between the stage 1 and the stage 4 shows that the temperature B of the air flow in the whole detector box is obviously lower when the internal heat dissipation structure works compared with the condition that the heat is not dissipated inside and outside, and the comparison between the internal heat dissipation structure and thedetector box 2 shows that the heat accumulation is not easy to occur in the working gap stage.

Three curves for stage 3 and stage 4 compare: the temperature a of the detector module rises significantly, while the temperature B of the airflow in the detector box and the temperature C of the detector box do not rise significantly, indicating that the internal heat dissipation structure can quickly carry heat to the wall of thedetector box 2. The internal cycle is stopped and the heat of thedetector module 23 in phase 4 cannot be transferred quickly and the heat accumulates in large quantities. This illustrates that the internal heat dissipation structure of the present invention has the function of rapidly transferring heat from thedetector module 23.

The above figure compares stage 1 withstage 2 and stage 3: after the external heat dissipation system stops, the temperature B of the airflow in the detector box integrally rises, and the external heat dissipation structure has the function of quickly transferring away the heat of the detected outer wall.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

Translated fromChinese

1.一种用于CT探测器的散热装置，包括壳体(11)和设置于所述壳体(11)内的支架(1)、转盘(12)和封闭的探测器箱(2)，所述转盘(12)转动连接于所述支架(1)，其特征在于，还包括：1. A heat dissipation device for a CT detector, comprising a housing (11) and a bracket (1), a turntable (12) and a closed detector box (2) arranged in the housing (11), The turntable (12) is rotatably connected to the bracket (1), and is characterized in that it further comprises:内部散热结构，所述内部散热结构包括设置于所述探测器箱(2)内部的气流源，所述气流源能够促进所述探测器箱(2)内的空气流动以将探测器模块(22)产生的热量传递至所述探测器箱(2)的内壁；An internal heat dissipation structure, the internal heat dissipation structure includes an air flow source arranged inside the detector box (2), the air flow source can promote the air flow in the detector box (2) to dissipate the detector module (22) ) generated heat is transferred to the inner wall of the detector box (2);外部散热结构，所述外部散热结构包括设置于所述支架(1)内的环形的气流通道，所述探测器箱(2)位于所述气流通道内，所述壳体(11)上设置有与所述气流通道连通的进气口(8)和出气口(7)。An external heat dissipation structure, the external heat dissipation structure includes an annular airflow channel arranged in the bracket (1), the detector box (2) is located in the airflow channel, and the housing (11) is provided with a An air inlet (8) and an air outlet (7) communicated with the air flow channel.2.根据权利要求1所述的用于CT探测器的散热装置，其特征在于，所述壳体(11)上部的两侧分别设置有一个所述出气口(7)；所述壳体(11)下部的两侧分别设置有一个所述进气口(8)。2. The cooling device for a CT detector according to claim 1, characterized in that, two sides of the upper part of the casing (11) are respectively provided with one of the air outlets (7); the casing (11) 11) The air inlets (8) are respectively provided on both sides of the lower part.3.根据权利要求2所述的用于CT探测器的散热装置，其特征在于，所述壳体(11)包括位于其中心的筒体(5)，且所述筒体(5)穿过所述转盘(12)中心，所述探测器箱(2)连接于所述转盘(12)，并位于所述筒体(5)和所述支架(1)内壁之间，所述筒体(5)外壁、所述筒体(5)一端的所述转盘(12)、所述筒体(5)另一端的所述壳体(11)的侧壁与所述支架(1)内壁共同形成所述气流通道。3. The heat dissipation device for a CT detector according to claim 2, wherein the casing (11) comprises a cylindrical body (5) located in the center thereof, and the cylindrical body (5) passes through In the center of the turntable (12), the detector box (2) is connected to the turntable (12), and is located between the cylinder (5) and the inner wall of the bracket (1), and the cylinder ( 5) The outer wall, the turntable (12) at one end of the cylinder (5), the side wall of the casing (11) at the other end of the cylinder (5) and the inner wall of the bracket (1) are formed together the airflow channel.4.根据权利要求3所述的用于CT探测器的散热装置，其特征在于，所述转盘(12)停止转动时，一个所述进气口(8)对应所述探测器箱(2)的中间位置处，所述探测器箱(2)的一端部对应另一个所述进气口(8)处，所述探测器箱(2)的另一端部对应一个所述出气口(7)处。4. The heat dissipation device for a CT detector according to claim 3, characterized in that, when the turntable (12) stops rotating, one of the air inlets (8) corresponds to the detector box (2) At the middle position of the detector box (2), one end of the detector box (2) corresponds to the other air inlet (8), and the other end of the detector box (2) corresponds to one of the air outlets (7). place.5.根据权利要求1所述的用于CT探测器的散热装置，其特征在于，所述外部散热结构还包括聚风结构，所述聚风结构用于将由所述进气口(8)进入所述支架(1)内的气流聚集后吹向所述气流通道。5. The heat dissipation device for a CT detector according to claim 1, characterized in that, the external heat dissipation structure further comprises a wind gathering structure, and the wind gathering structure is used to enter the air through the air inlet (8). The airflow in the bracket (1) is collected and then blown toward the airflow channel.6.根据权利要求5所述的用于CT探测器的散热装置，其特征在于，所述聚风结构包括：6. The heat dissipation device for a CT detector according to claim 5, wherein the wind gathering structure comprises:聚风板(3)，所述聚风板(3)安装于所述支架(1)内，并位于所述进气口(8)处；an air collecting plate (3), the air collecting plate (3) is installed in the bracket (1) and is located at the air inlet (8);聚风罩(10)，所述聚风罩(10)安装于所述聚风板(3)上，所述聚风罩(10)的出口为长方形。A wind collecting hood (10), the wind collecting hood (10) is mounted on the wind collecting plate (3), and the outlet of the wind collecting hood (10) is rectangular.7.根据权利要求1-6任一项所述的用于CT探测器的散热装置，其特征在于，所述进气口(8)处设置有外部进气风扇，所述出气口(7)处设置有外部出气风扇。7. The heat dissipation device for a CT detector according to any one of claims 1-6, wherein an external air intake fan is provided at the air inlet (8), and the air outlet (7) There is an external exhaust fan.8.根据权利要求1-6任一项所述的用于CT探测器的散热装置，其特征在于，所述探测器箱(2)的材质为铝合金。8. The heat dissipation device for a CT detector according to any one of claims 1-6, wherein the detector box (2) is made of aluminum alloy.9.根据权利要求1-6任一项所述的用于CT探测器的散热装置，其特征在于，所述气流源为若干内部风扇(21)，若干所述内部风扇(21)设置于所述探测器箱(2)内，且出风方向朝向所述探测器模块(22)设置。9. The heat dissipation device for a CT detector according to any one of claims 1-6, wherein the airflow source is a plurality of internal fans (21), and a plurality of the internal fans (21) are arranged in the The detector box (2) is installed in the detector box (2), and the air outlet direction is arranged toward the detector module (22).10.一种CT设备，其特征在于，包括权利要求1-9任一项所述的用于CT探测器的散热装置。10. A CT equipment, characterized in that it comprises the heat dissipation device for a CT detector according to any one of claims 1-9.

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