CN211049380U

CN211049380U - Air-cooled heat abstractor of PET system

Info

Publication number: CN211049380U
Application number: CN201921439435.0U
Authority: CN
Inventors: 许建青; 马兴江; 金坚诚
Original assignee: Mingfeng Medical System Co Ltd
Current assignee: Mingfeng Medical System Co Ltd; Minfound Medical Systems Co Ltd
Priority date: 2019-09-02
Filing date: 2019-09-02
Publication date: 2020-07-21
Anticipated expiration: 2029-09-02

Abstract

The utility model discloses a PET system air-cooled heat abstractor, the PET system includes the scanning ring and installs at the intra-annular mounting base of scanning, the last a plurality of detectors of installing of mounting base form the detector ring, air-cooled heat abstractor is including being located the inlet air duct and the air-out passageway of scanning ring both sides respectively, a plurality of air intakes are seted up on the inlet air duct, air intake one is connected with air cooling device through the air-supply line, inlet air duct's inside is established with a communicating inboard inlet air duct of air intake, a plurality of air outlets are seted up with the one side that the detector terminal surface was laminated mutually to inboard inlet air duct, establish air inlet device in the detector, air intake two and air outlet two are established respectively at the both ends of detector, air intake two communicates with each other with inboard inlet air duct. The utility model discloses cooling air can dispel the heat the cooling according to set runner to the detector, simple structure, and the radiating efficiency is high and inside temperature is even.

Description

Air-cooled heat abstractor of PET system

Technical Field

The utility model relates to a medical imaging equipment technical field, more specifically relate to a PET system forced air cooling heat abstractor.

Background

The detectors of the PET system are uniformly distributed on the whole circumference, the heating power consumption is dispersed, after the outer cover is covered, the internal air flow field is disordered, external cold air cannot be well guided to the air inlet of the detector, hot air from the air outlet of the detector cannot be effectively discharged to the outside of the outer cover, the temperature of the detector is high, and various performance indexes and image quality of the system are affected. Meanwhile, the heat dissipation of the PET system is also influenced by the CT operation. In patent documents CN103860187B and CN105704982B, it is disclosed that a centrifugal fan and an air cooler are arranged at the bottom of a PET rack, the centrifugal fan sucks external air (room temperature) and supplies the air to peripheral electronics boards in a peripheral air duct for heat dissipation, and hot air heated by the electronics boards is discharged out of a housing; the air cooler is arranged between the air inlet channel and the air return channel of the inner cavity air channel, low-temperature cold air coming out of the air cooler enters the air inlet channel, the cold air enters the air return channel after radiating heat of a core part of a detector in the inner cavity air channel, and hot air in the air return channel enters the air cooler to be cooled and then is sent into the air inlet channel to form circulation. However, the design of the outer air duct and the inner air duct in the scheme can cause great difference in temperature or flow of cooling air supplied to each detector module on the ring, and influence the temperature uniformity of each detector module, thereby influencing the overall performance; the air that the air-cooler extracted is through the air that the detector core component was heated, and probably the temperature can be higher than the room temperature outside the dustcoat, and it is efficient not directly to extract outside air.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a PET system forced air cooling heat abstractor, cooling air can dispel the heat the cooling to the detector according to set runner, and the radiating efficiency is high and inside temperature is even.

In order to achieve the above purpose, the utility model provides a following technical scheme: an air-cooled heat dissipation device of a PET system comprises a scanning ring and a mounting base arranged in the scanning ring, wherein a plurality of detectors are arranged on the mounting base to form a detector ring, the air-cooled heat dissipation device comprises an air inlet channel and an air outlet channel which are respectively arranged at two sides of the scanning ring, a plurality of air inlets are formed in the air inlet channel, the air inlets are connected with an air cooling device through air inlet pipelines, inner side air inlet channels communicated with the air inlets are arranged in the air inlet channels, a plurality of air outlets are formed in the surfaces, attached to the end surfaces of the detectors, of the inner side air inlet channels, the detectors are internally provided with air inlet devices, two ends of the detectors are respectively provided with air inlets two and air outlets two, the air inlets two are communicated with the inner side air inlet channels, the air outlets two are communicated with the air, and an exhaust device is arranged at the top of the air outlet channel.

According to the working principle, the air cooling device sucks room temperature air from the outside of the machine, low temperature air is conveyed to the air inlet channel through the air inlet I, the low temperature air firstly meets the requirement of the inner side air inlet channel, and the low temperature air is distributed to the air inlets II of the detectors through the air outlet I. The air inlet device arranged in the detector sucks low-temperature air into the detector heat dissipation cavity to dissipate heat and cool all parts of the detector, the temperature of the low-temperature air rises after passing through the detector heat dissipation cavity, the low-temperature air flows out of the air outlet of the detector and enters the air outlet channel, and the low-temperature air is exhausted to the indoor environment outside the machine through the air exhaust device on the upper portion of the air outlet channel. The utility model discloses cooling air can dispel the heat the cooling according to set runner to the detector, and the high and inside temperature of radiating efficiency is even.

Further, the first air inlet is set to be two, the air inlet pipeline comprises an air inlet main pipe connected with the air cooling device, each air inlet is connected with an air inlet branch pipe, and the air inlet branch pipes are connected with the air inlet main pipe. In order to ensure that the cooling air quantity distributed by the detectors at different positions on the whole scanning ring is relatively uniform, at least two air inlets I are arranged on the air guide cover of the air inlet channel, the two air inlets I are distributed at symmetrical positions on the air inlet channel, and the low-temperature air conveyed by the air inlet main pipe is divided into two air inlet branch pipes.

Furthermore, an air volume adjusting door is arranged at one position of the air inlet and controls the opening and closing angle of the adjusting door through a motor, so that the air volume entering the inner air inlet channel is adjusted.

Furthermore, the air inlet device is installed in a plurality of fans inside the detector, the number of the fans is set to one to three, and the fan arranged in the detector sucks low-temperature air into the heat dissipation cavity inside the detector to dissipate heat and cool all parts of the detector.

Furthermore, the fan is provided with a temperature closed-loop feedback function, the size of the air suction volume can be adjusted according to the temperature of the detector, and the temperature of the whole-loop detector can be better uniform.

Furthermore, the air inlet II comprises an air inlet III positioned at the bottom of the detector and an air inlet IV positioned at the upper part of the detector, and the air outlet II comprises an air outlet III positioned at the bottom of the detector and an electronic exhaust fan positioned at the upper part of the detector. The electronic board on the upper portion of detector inside needs the heat dissipation, and scintillation crystal and support plate (SiPM) of bottom also need the heat dissipation, consequently sets up corresponding air intake and air outlet and satisfies both's heat dissipation demand. And a flat blower is arranged in the air inlet on the upper part of the detector, so that low-temperature air is conveniently sucked and then is discharged into an air exhaust channel through an electronic exhaust fan on the back.

Furthermore, the first air outlets are uniformly distributed along the circumferential direction of the inner side air inlet channel and are arranged in one-to-one correspondence with the third air inlets on the detector. The temperature of scintillation crystal and support plate (SiPM) of detector bottom has very big influence to system performance, and the temperature can obtain better system performance when below 20 ℃, and inboard inlet air channel's air outlet is set up to rectangle along circumferencial direction evenly distributed and with three one-to-one settings of air intake for the low temperature air satisfies the cooling demand of crystal and support plate position at first, guarantees the inside temperature homogeneity of detector.

Furthermore, be close to the one end of air-out passageway, it is adjacent clearance between the detector is equipped with wedge-shaped separation blade, and wedge-shaped separation blade is stopped up the gap between with adjacent detector completely and is prevented that the hot-blast wedge clearance that can prevent the detector to come out from flowing back to the air intake through between the detector.

Furthermore, the exhaust device is a plurality of exhaust fans arranged at the top of the air outlet channel, and the exhaust fans are arranged at the top of the air outlet channel and can effectively exhaust hot air in the air outlet channel out of the machine.

Furthermore, the air cooling device is an air cooler which can be selectively arranged in an outer cover of the PET machine or externally arranged according to the size, room-temperature air is sucked into the air cooler from the outside of the machine, and after passing through functional components such as an internal compressor, a condenser, an evaporator and the like, one part of the air cooler is converted into low-temperature air and conveyed to the air inlet channel, and the other part of the air cooler is converted into high-temperature air and discharged out of the machine.

To sum up, the utility model discloses cooling air can dispel the heat the cooling to the detector according to set runner, and the intake can be adjusted according to the detector temperature, can realize that whole ring detector temperature has better homogeneity. Simple structure, the radiating efficiency is high and inside temperature is even.

Drawings

FIG. 1 is a schematic overall structural view of the present invention;

FIG. 2 is a schematic view of the air intake structure of the intercooling air of the present invention;

FIG. 3 is a schematic view of the working principle of the present invention;

FIG. 4 is a schematic view of the internal structure of the middle air intake channel of the present invention;

FIG. 5 is a schematic view of the structure of the air volume adjusting door of the present invention;

fig. 6 is a schematic view of the structure of the middle air outlet channel of the present invention;

fig. 7 is a schematic view of the internal circulation of the middle air outlet channel of the present invention;

FIG. 8 is a schematic view of the internal structure of the PET system of the present invention;

FIG. 9 is a rear view of FIG. 8;

fig. 10 is a schematic view of the structure of the middle baffle plate of the present invention.

Description of the labeling: 1. an air cooling device; 2. an air inlet channel; 21. a first air inlet; 22. an inner air inlet channel; 23. an air outlet I; 24. an air volume adjusting door; 3. a detector; 31. an air suction device; 32. an air inlet IV; 33. an air inlet III; 34. an electronic exhaust fan; 35. an air outlet III; 36. a baffle plate; 4. an air outlet channel; 5. an air exhaust device; 6. an air inlet pipeline; 61. an air inlet main pipe; 62. an air inlet branch pipe.

Detailed Description

The embodiment of the present invention for an air-cooled heat sink of a PET system is further described with reference to fig. 1 to 10.

An air-cooled heat dissipation device of a PET system is disclosed, as shown in figure 1, the PET system comprises a scanning ring and a mounting base installed in the scanning ring, a plurality of detectors 3 are installed on the mounting base to form a detector ring, the air-cooled heat dissipation device comprises an air inlet channel 2 and an air outlet channel 4 which are respectively located on two sides of the scanning ring, a plurality of air inlets 21 are formed in the air inlet channel 2, the air inlets 21 are connected with an air cooling device 1 through an air inlet pipeline 6, an inner side air inlet channel 22 communicated with the air inlets 21 is arranged in the air inlet channel 2, a plurality of air outlets 23 are formed in one side, which is attached to the end face of the detectors 3, of the inner side air inlet channel 22, a plurality of air inlets 23 are formed in the detectors 3, two ends of the detectors 3 are respectively provided with an air inlet II and an air outlet II, the air outlet II is communicated with the air outlet channel 4, and an air exhaust device 5 is arranged at the top of the air outlet channel 4.

According to the working principle, as shown in fig. 2 and 3, the air cooling device 1 sucks room temperature air from the outside of the machine, and conveys low temperature air to the air inlet channel 2 through the air inlet one 21, the low temperature air firstly meets the requirement of the inner air inlet channel 22, and the low temperature air is distributed to the air inlets two of the detectors 3 through the air outlet one 23. The detector 3 is built-in hot blast blowpipe apparatus and inhales the detector 3 heat dissipation chamber with low temperature air, dispels the heat to 3 each parts of detector and cools down, and low temperature air is behind the detector 3 heat dissipation chamber, and the temperature rises, flows out from detector 3 air outlet two and gets into air-out passageway 4, by the exhaust device 5 discharge to the machine outside indoor environment on air-out passageway 4 upper portion. The utility model discloses cooling air can dispel the heat the cooling according to set runner to detector 3, and the high and inside temperature of radiating efficiency is even.

As shown in fig. 4, the first air inlets 21 are two, the air inlet pipeline 6 includes an air inlet main pipe 61 connected to the air cooling device 1, each of the first air inlets 21 is connected to an air inlet branch pipe 62, and the air inlet branch pipes 62 are connected to the air inlet main pipe 61. In order to make the cooling air quantity distributed by the detectors 3 at different positions on the whole scanning ring relatively uniform, at least two air inlets one 21 are arranged on the air guide cover of the air inlet channel 2, the two air inlets one 21 are distributed at symmetrical positions on the air inlet channel 2, and the low-temperature air conveyed by the air inlet main pipe 61 is divided into two air inlet branch pipes 62 of the two air inlet branch pipes.

Preferably, in this embodiment, an air volume adjusting door 24 is disposed at the first air inlet 21, and the air volume adjusting door 24 is as shown in fig. 5, and the air volume adjusting door 24 controls an opening and closing angle of the adjusting door through a motor, so as to adjust an air volume entering the inner air inlet channel 22.

This embodiment is preferred, hot blast blowpipe apparatus is for installing a plurality of fans inside the detector 3, fan quantity sets up to one to three, and the detector 3 embeds the fan and inhales the inside heat dissipation chamber of detector 3 with low temperature air, dispels the heat and cools down to 3 each parts of detector.

Preferably, the fan is provided with a temperature closed-loop feedback function, so that the suction air volume can be adjusted according to the temperature of the detector 3, and the temperature of the detector 3 in the whole loop can be better uniform.

As shown in fig. 8 and 9, the second air inlet includes a third air inlet 33 located at the bottom of the detector 3 and a fourth air inlet 32 located at the upper portion of the detector 3, and the second air outlet includes a third air outlet 35 located at the bottom of the detector 3 and an electronic exhaust fan 34 located at the upper portion of the detector 3. The electronic board on the upper portion of detector 3 inside needs the heat dissipation, and scintillation crystal and support plate (SiPM) of bottom also need the heat dissipation, consequently sets up corresponding air intake and air outlet and satisfies the heat dissipation demand of both. The air inlet four 32 at the upper part of the detector 3 is internally provided with a flat blower, so that low-temperature air is conveniently sucked and then discharged into an air exhaust channel through an electronic exhaust fan 34 at the back.

Preferably, in this embodiment, the first air outlets 23 are uniformly distributed along the circumferential direction of the inner air inlet channel 22, and are arranged in one-to-one correspondence with the third air inlets 33 on the detector 3. The temperature of the scintillation crystal and the support plate (SiPM) at the bottom of the detector 3 has great influence on the system performance, better system performance can be obtained when the temperature is below 20 ℃, and the air outlets I23 of the inner air inlet channel 22 are arranged to be rectangular and uniformly distributed along the circumferential direction and are arranged in one-to-one correspondence with the air inlets III 33, so that the low-temperature air firstly meets the cooling requirement of the crystal and the support plate, and the temperature uniformity inside the detector 3 is ensured.

As shown in fig. 9, a wedge-shaped blocking piece 36 is disposed in a gap between adjacent detectors 3 near one end of the air outlet channel 4, the blocking piece 36 is shaped as shown in fig. 10, and the wedge-shaped blocking piece 36 completely blocks the gap between adjacent detectors 3 to prevent hot air from flowing out of the detectors 3 from flowing back to the air inlet through the wedge-shaped gap between the detectors 3.

Referring to fig. 6 and 7, the exhaust device 5 is a plurality of exhaust fans installed at the top of the air outlet channel 4, and the exhaust fans are arranged at the top of the air outlet channel 4, so that hot air in the air outlet channel 4 can be effectively exhausted out of the machine.

Preferably, in this embodiment, the air cooling device 1 is an air cooler, the air cooler can be selectively arranged in an outer cover of the PET machine or externally arranged according to the size, room-temperature air is sucked into the air cooler from the outside of the PET machine, and after passing through functional components such as an internal compressor, a condenser and an evaporator, a part of the air cooler is converted into low-temperature air and is conveyed to the air inlet channel 2, and a part of the air cooler is converted into high-temperature air and is discharged out of the PET machine.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a PET system forced air cooling heat abstractor, the PET system includes the scanning ring and installs the intra-annular mounting base of scanning, the last a plurality of detectors of installing of mounting base forms detector ring, its characterized in that: the air-cooled heat dissipation device comprises an air inlet channel and an air outlet channel which are respectively positioned on two sides of the scanning ring, a plurality of air inlets I are formed in the air inlet channel, the air inlets I are connected with an air cooling device through air inlet pipelines, an inner side air inlet channel communicated with the air inlets I is arranged in the air inlet channel, a plurality of air outlets I are formed in one side, attached to the end face of the detector, of the inner side air inlet channel, an air inlet device is arranged in the detector, an air inlet II and an air outlet II are respectively formed in two ends of the detector, the air inlet II is communicated with the inner side air inlet channel, the air outlet II is communicated with the air outlet channel, and an air exhaust device is.

2. The PET system air-cooled heat sink of claim 1, wherein: the first air inlet is two, the air inlet pipeline comprises an air inlet main pipe connected with the air cooling device, and each air inlet branch pipe is connected to one position of the air inlet and is connected with the air inlet main pipe.

3. The PET system air-cooled heat sink of claim 2, wherein: an air volume adjusting door is arranged at one position of the air inlet and controls the opening and closing angle of the adjusting door through a motor.

4. The PET system air-cooled heat sink of claim 1, wherein: the air inlet device is a plurality of fans installed inside the detector, and the number of the fans is set to be one to three.

5. The PET system air-cooled heat sink of claim 4, wherein: the fan is provided with a temperature closed loop feedback function, and the size of the air suction volume can be adjusted according to the temperature of the detector.

6. The PET system air-cooled heat sink of claim 1, wherein: the air inlet II comprises an air inlet III positioned at the bottom of the detector and an air inlet IV positioned at the upper part of the detector, and the air outlet II comprises an air outlet III positioned at the bottom of the detector and an electronic exhaust fan positioned at the upper part of the detector.

7. The PET system air-cooled heat sink of claim 6, wherein: the first air outlets are uniformly distributed along the circumferential direction of the inner side air inlet channel and are arranged in one-to-one correspondence with the third air inlets on the detector.

8. The PET system air-cooled heat sink of claim 1, wherein: and a wedge-shaped blocking piece is arranged at a gap between every two adjacent detectors near one end of the air outlet channel.

9. The PET system air-cooled heat sink of any one of claims 1-8, wherein: the exhaust device is a plurality of exhaust fans arranged at the top of the air outlet channel.

10. The PET system air-cooled heat sink of any one of claims 1-8, wherein: the air cooling device is an air cooler.