CT equipment

Abstract

The utility model provides CT equipment, and the CT equipment comprises a housing which is provided with a cavity; the rotating piece is located in the cavity and can rotate relative to the shell; the CT bulb tube is used for generating X rays, and the CT bulb tube is arranged on the rotating piece; the heat exchanger is connected to the rotating part and comprises a pipeline and a heat dissipation plate, the pipeline is used for containing cooling liquid and conveying the cooling liquid to the heat dissipation plate, the heat dissipation plate is used for cooling the cooling liquid, and the cooling liquid is used for cooling the CT bulb tube; and the flow guide cover is connected to the heat dissipation plate, the flow guide cover is provided with a flow guide opening for guiding airflow to enter the heat exchanger, and the opening direction of the flow guide opening faces the rotating direction of the rotating part. According to the scheme, the heat dissipation capacity of the CT equipment can be improved, and power-off protection can be carried out on the CT bulb tube.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a CT device. Background Technology

[0002] Computed tomography (CT) equipment plays a vital role in modern medicine. CT scanners generate images of specific areas within a patient's body in a short time by emitting and receiving X-rays, helping doctors understand the patient's internal condition without surgery. The X-ray tube (also known as the X-ray tube) is one of the core components of a CT scanner. To generate sufficient radiation, the X-ray tube consumes a large amount of electrical energy, producing a significant amount of heat in a short period. If this heat accumulates inside the tube, it can easily melt and destroy the entire tube. Therefore, the frequency of use of a CT scanner is largely limited by its heat dissipation capabilities. Utility Model Content

[0003] One of the objectives of this invention is to improve the heat dissipation capacity of CT equipment.

[0004] To solve the above-mentioned technical problems, this utility model provides a CT device, including: a housing having a cavity; a rotating component located within the cavity and rotatable relative to the housing; a CT tube for generating X-rays, the CT tube being disposed on the rotating component; a heat exchanger connected to the rotating component, the heat exchanger including pipes and a heat dissipation plate, the pipes for containing coolant and conveying the coolant to the heat dissipation plate, the heat dissipation plate for cooling the coolant, the coolant for cooling the CT tube; and a flow guide connected to the heat dissipation plate, the flow guide having a flow guide port for guiding airflow into the heat exchanger, wherein the opening direction of the flow guide port faces the rotation direction of the rotating component.

[0005] Optionally, the opening direction of the guide port is oriented towards the windward side of the rotation direction.

[0006] Optionally, the rotating component is annular, and the opening direction of the guide port is parallel to the tangential direction of the heat exchanger at the position on the rotating component.

[0007] Optionally, the flow deflector has an arc-shaped flow guide section.

[0008] Optionally, the flow guide shroud has a top facing the heat exchanger, and the flow guide portion is disposed on the top.

[0009] Optionally, the top is provided with reinforcing ribs.

[0010] Optionally, the edges of the flow guide include a rounded corner structure.

[0011] Optionally, the outer surface of the flow guide is provided with a fin-like structure.

[0012] Optionally, the flow guide is made of heat-insulating material, or the outer surface of the flow guide is provided with a heat-insulating layer.

[0013] Optionally, the heat exchanger has an air inlet and an air outlet, and the air inlet is surrounded by the air guide shroud.

[0014] Optionally, the housing is provided with an exhaust port, and an exhaust fan is connected to the exhaust port.

[0015] Compared with the prior art, the technical solution of this utility model embodiment has the following beneficial effects:

[0016] A flow guide shroud is connected to the heat exchanger. The flow guide shroud has a flow port that guides airflow into the heat exchanger. The opening of the flow port faces the rotation direction of the rotating component. Therefore, when the CT equipment is operating, more airflow can be actively guided into the heat exchanger through the flow port and flow through the heat sink. This actively allows more airflow to pass through the heat sink, improving the cooling effect on the coolant and thus enhancing the cooling capacity of the CT tube and the overall heat dissipation of the CT equipment. When the CT equipment experiences an abnormal power failure, the rotating component continues to rotate due to inertia. At this time, the flow guide shroud continues to guide airflow into the heat exchanger to cool the coolant and further cool the CT tube, thus providing power-off protection for the CT tube and preventing it from being damaged due to overheating.

[0017] In addition, improving the heat dissipation of CT equipment can increase the frequency of its use, which is beneficial to improving the utilization rate of CT equipment.

[0018] Furthermore, due to the arc-shaped structure of the air deflector, the air inside the cavity is more violently agitated, which causes cooler air that is farther away from the heat sink to also be drawn into the air circulation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a CT device according to an embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram showing the relative positions of the heat exchanger and the flow guide. Detailed Implementation

[0021] As mentioned above, most commercially available CT scanners have a flat, hollow cylindrical disc-like structure. Lifting the disc reveals a concentric ring-shaped mechanical structure inside, on which the CT tube is mounted (referred to as the rotating component). The function of the rotating component is to ensure that the X-ray tube can be continuously powered and output the required signal while rotating inside the gantry.

[0022] The rotating components within the CT scanner are essentially completely enclosed, severely restricting the space for heat exchange between the X-ray tube and the outside environment to a very small area. Due to this limited space, hot air blown by the heat exchanger's fan is reflected back towards the vicinity of the heat exchanger by the nearby cavity walls. Over time, the CT tube heats the gas throughout the cavity, creating a localized circulation of hot air. This circulation causes the air temperature near the heat sink to become more uniform, reducing the temperature difference between the air and the heated coolant, thus hindering the heat exchange rate and decreasing the usable frequency of the X-ray tube per unit time.

[0023] To address the aforementioned problems, in this embodiment of the invention, a flow guide shroud is connected to the heat exchanger. The flow guide shroud has a flow port that guides airflow into the heat exchanger. The opening of the flow port faces the rotation direction of the rotating component. Therefore, when the CT equipment is operating, more airflow can be actively guided into the heat exchanger through the flow port and flow through the heat sink. This actively allows more airflow to pass through the heat sink, improving the cooling effect on the coolant and thus enhancing the cooling capacity of the CT tube and the overall heat dissipation of the CT equipment. Furthermore, by improving the heat dissipation of the CT equipment, the frequency of use of the CT equipment can be increased, which is beneficial for improving the utilization rate of the CT equipment.

[0024] To make the above-mentioned objectives, features and beneficial effects of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0025] Reference Figure 1 A schematic diagram of the structure of a CT device according to an embodiment of the present utility model is given; Figure 2 This is a schematic diagram showing the relative positions of the heat exchanger and the flow guide. The following is in conjunction with... Figure 1 and Figure 2 The specific structure and working principle of CT equipment are explained.

[0026] In a specific implementation, the CT equipment includes: a housing 10, a rotating component 20, a CT tube 30, a heat exchanger 40, and a flow deflector 50. The housing 10 has a cavity 11. The rotating component 20 is located within the cavity 11 and is rotatable relative to the housing 10. The CT tube 30 is used to generate X-rays and is disposed on the rotating component 20. The heat exchanger 40 is connected to the rotating component 20 and includes a pipe 41 for containing and cooling a coolant, which is used to cool the CT tube 30. The flow deflector 50 is connected to the heat exchanger 40 and has a flow port 51 for guiding airflow into the heat exchanger 40, wherein the opening direction of the flow port 51 faces the rotation direction of the rotating component 20.

[0027] The rotating component 20, also known as a slip ring, is used to ensure that the CT tube can be continuously powered and output the required signal when it rotates inside the gantry.

[0028] The heat exchanger 40 is connected in series with the CT tube. Specifically, the heat exchanger 40 and the CT tube are connected in series via a coolant.

[0029] Airflow (e.g., air) enters heat exchanger 40 and comes into contact with heat dissipation plates (e.g., heat dissipation fins) on the surface of pipe 41. Heat transfer and convection occur between the airflow and the coolant in pipe 41 on the surface of the heat dissipation plates (e.g., heat dissipation fins), resulting in heat exchange. After heat exchange, the coolant temperature decreases, and the airflow temperature increases. The cooled coolant is then used to cool the CT tube 30. After cooling the CT tube 30, the coolant temperature rises and it re-enters the pipe 41 of heat exchanger 40 for further cooling, thus completing the cycle.

[0030] As can be seen from the above scheme, a flow guide shroud 50 is connected to the heat exchanger 40. The flow guide shroud 50 has a flow guide port 51 that guides the airflow into the heat exchanger 40. The opening direction of the flow guide port 51 is towards the rotation direction of the rotating component 20. Thus, when the CT equipment is working, the flow guide shroud 50 can intercept more airflow and force this airflow to enter the heat exchanger 40 through the flow guide port 51 and flow through the heat dissipation plate. That is, it can actively allow more airflow to flow through the heat dissipation plate to increase the airflow entering the heat exchanger 40, improve the cooling effect of the coolant, improve the cooling capacity of the CT tube 30, and improve the heat dissipation effect of the CT equipment.

[0031] In some embodiments, the opening direction of the air guide 51 faces the windward side of the rotation direction. When the CT device is operating, the airflow direction is opposite to the rotation direction of the rotating component 20, and the air guide 51's opening direction facing the windward side of the rotation direction can intercept more airflow through the air guide 51. Figure 1 The hollow arrow in the image indicates the rotation direction of the rotating component 20, while the solid arrow indicates the direction of the airflow.

[0032] In some embodiments, the rotating member 20 is annular, and the opening direction of the guide port 51 is parallel to the tangential direction of the position of the heat exchanger 40 on the rotating member 20.

[0033] In some embodiments, the air deflector 50 has an arc-shaped air guide section. The arc-shaped air guide section can reduce airflow resistance, thereby helping to guide the airflow smoothly into the heat exchanger 40. Due to the arc-shaped structure of the air deflector 50, the air in the cavity 11 is more violently agitated, thereby entraining cooler air farther away from the heat sink into the air circulation, improving the heat dissipation effect.

[0034] In some non-limiting embodiments, the flow guide 50 has a top 52 facing the heat exchanger 40, and the flow guide portion is disposed on the top 52.

[0035] In practice, the deflector 50 blocks the air inlet of the heat exchanger 40. This prevents the airflow from the outlet of the heat exchanger 40 from being directly approached by the airflow returning from the cavity wall. This prevents the airflow from the outlet of the heat exchanger 40 from mixing again and entering the heat exchange cycle. It also breaks the hot air circulation of the hot air returning from the cavity wall to the air inlet of the heat exchanger 40. The return path of the hot air is blocked outside the air inlet and cannot directly merge into the cooling airflow. This ensures that the temperature of the airflow entering the heat exchanger 40 has a relatively large temperature difference with the temperature of the coolant, thus guaranteeing the heat exchange effect.

[0036] In some embodiments, the top 52 is provided with reinforcing ribs. The reinforcing ribs can be provided on the outer surface of the top of the flow guide 50 or on the inner surface of the flow guide 50. The outer surface of the flow guide 50 is the surface away from the heat exchanger 40, and the inner surface of the flow guide 50 is the surface facing the heat exchanger 40. The reinforcing ribs enhance the strength of the flow guide 50 and reduce the probability of the flow guide being bent by airflow.

[0037] Furthermore, the reinforcing ribs can extend in the direction of airflow to reduce airflow resistance.

[0038] In a specific implementation, the edge of the flow guide 51 includes a rounded corner structure 53. When the airflow enters the heat exchanger 40 through the flow guide 51, the rounded corner structure 53 can disperse stress, prevent damage to the flow guide shroud 50 due to excessive stress concentration, and extend the service life of the flow guide shroud 50.

[0039] Furthermore, a rounded corner structure 53 is provided at least in the area where the two sides of the guide port 51 intersect.

[0040] In some embodiments, the outer surface of the airflow deflector 50 is provided with a fin-like structure. Furthermore, the fin-like structure protrudes from the outer surface of the airflow deflector 50. During the operation of the CT equipment, as the airflow deflector 50 rotates with the rotating component 20, the fin-like structure can agitate the airflow, ensuring thorough mixing and preventing localized overheating of the airflow within the cavity 11. Thorough mixing of the airflow also improves heat exchange efficiency and enhances the heat exchange effect of the CT equipment.

[0041] In some embodiments, the flow guide shroud 50 is made of a heat-insulating material, or a heat-insulating layer is provided on the outer surface of the flow guide shroud 50. This forms a localized thermal protection for the flow guide port 51, preventing the hot airflow outside the shield shroud 50 from exchanging heat with the airflow entering the heat exchanger 40 through heat convection or heat conduction, ensuring that the temperature of the airflow entering the heat exchanger 40 is relatively low, and improving the heat exchange effect of the heat exchanger 40.

[0042] In a specific implementation, the heat exchanger 40 has an air inlet and an air outlet, and the flow guide shroud 50 surrounds the air inlet. The airflow enters the heat exchanger 40 through the air inlet, exchanges heat with the coolant in the pipe 41, and is discharged from the air outlet.

[0043] In a specific implementation, the outer casing 10 is provided with an exhaust port, and an exhaust fan is connected to the exhaust port. The exhaust fan is used to discharge the airflow inside the cavity 11 to the outside of the outer casing 10. As the exhaust fan discharges the airflow to the outside of the outer casing 10, the pressure inside the cavity 11 decreases, forming a negative pressure effect. Under the action of negative pressure, the airflow from the outside will be drawn into the cavity 11. The airflow drawn into the cavity 11 is usually at room temperature, which can improve the heat exchange effect.

[0044] In addition, in some typical scenarios, such as when the CT equipment unexpectedly loses power or malfunctions and stops, the exhaust fan will fail. However, since the rotation of the rotating parts in the CT equipment does not stop immediately but continues to rotate due to its own inertia, the CT tube can also rely on the rotation of the rotating parts to guide the airflow into the heat exchanger for emergency heat dissipation. This ensures that the CT tube will not burn out due to a rapid increase in temperature in a short period of time, further guaranteeing the safety of the CT equipment.

[0045] Roughly calculated, the airflow V (in meters) actively incorporated into heat exchange is guided by the deflector. 3 / s) represents the linear velocity v (in m / s) of the radiator rotation and the air inlet area S (in m²) of the shroud. 2 The product of ) is: V = v × S.

[0046] Assume heat exchanger 40 rotates at a speed of 1 rev / s, has a rotation radius of 1 m, and an inlet area of ​​0.03 m². 2Therefore, its linear velocity is 2*Pi*r*f (approximately 6.28 m / s), which gives us 0.188 m. 3 This is significantly greater than the airflow of a typical exhaust fan, which is the sum of the exhaust fan's own flow rate and the flow rate actively introduced by the deflector 50. This means that when the entire rotating component 20 rotates, the heat exchange efficiency is greatly improved. Since the rate of heat transfer is directly proportional to the flow velocity of the cooling fluid, the faster the flow rate, the faster the heat transfer rate. Therefore, the deflector 50 significantly increases the airflow velocity, thereby greatly increasing the heat transfer rate between the airflow and the surface of the heat exchanger 40, thus reducing the cooling time required for the CT tube 30.

[0047] Furthermore, the heat exchange efficiency of the CT equipment can be improved without the need for additional electrical equipment by using the deflector 30, resulting in lower costs.

[0048] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A CT apparatus characterized by comprising: The application relates to a CT device, comprising: a housing having a cavity; a rotating member located in the cavity and rotatable relative to the housing; a CT tube for generating X-rays, the CT tube being arranged on the rotating member; a heat exchanger connected to the rotating member, the heat exchanger comprising a pipeline for containing and conveying cooling liquid to a cooling plate, the cooling plate being used for cooling the cooling liquid, the cooling liquid being used for cooling the CT tube; a flow guide cover connected to the cooling plate, the flow guide cover having a flow guide opening for guiding air flow into the heat exchanger, wherein the opening direction of the flow guide opening is towards the rotating direction of the rotating member.

2. The CT apparatus of claim 1, wherein The opening direction of the flow guide opening is towards the windward surface of the rotating direction.

3. The CT apparatus of claim 2, wherein The rotating member is annular, and the opening direction of the flow guide opening is parallel to the tangent direction of the position of the heat exchanger arranged on the rotating member.

4. The CT apparatus of claim 1, wherein The flow guide cover has an arc-shaped flow guide part.

5. The CT apparatus of claim 4 wherein, The flow guide cover has a top part towards the heat exchanger, and the flow guide part is arranged on the top part.

6. The CT apparatus of claim 5 wherein, The top part is provided with reinforcing ribs.

7. The CT apparatus of claim 1 wherein, The edge of the flow guide opening comprises a rounded corner structure.

8. The CT apparatus of claim 1 wherein, The outer surface of the flow guide cover is provided with a fin structure.

9. The CT apparatus of claim 1 wherein, The flow guide cover is made of heat insulation material, or the outer surface of the flow guide cover is provided with a heat insulation layer.

10. The CT apparatus of claim 1 wherein, The heat exchanger has an air inlet and an air outlet, and the flow guide cover surrounds the air inlet.

11. The CT apparatus of claim 1 wherein, The housing is provided with an air outlet, and an air exhaust fan is connected to the air outlet.

Images