CN106901772B - Cooling device and medical imaging equipment - Google Patents
Cooling device and medical imaging equipment Download PDFInfo
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- CN106901772B CN106901772B CN201710223571.5A CN201710223571A CN106901772B CN 106901772 B CN106901772 B CN 106901772B CN 201710223571 A CN201710223571 A CN 201710223571A CN 106901772 B CN106901772 B CN 106901772B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/02—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computerised tomographs
- A61B6/037—Emission tomography
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/42—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for detecting radiation specially adapted for radiation diagnosis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/44—Constructional features of apparatus for radiation diagnosis
- A61B6/4488—Means for cooling
Abstract
The invention provides a cooling device and a medical imaging apparatus. The cooling device includes: a water cooler for providing a cooling fluid, the water cooler comprising a first fluid inlet and a first fluid outlet; the water separator comprises a water separator inlet and a plurality of water separator outlets, and the water separator inlet is connected with the first fluid outlet; the first fluid pipelines are connected with the outlets of the water distributors; the water collector comprises a water collector outlet and a plurality of water collector inlets, and the water collector inlets are connected with the first fluid pipeline; the air cooling machine is used for converting the cooling fluid into cooling air and comprises a second fluid inlet and a second fluid outlet; the second fluid inlet is connected with the sump outlet, and the second fluid outlet is connected with the first fluid inlet. The same circulating cooling fluid is adopted to realize fluid cooling and air-cooled heat dissipation of the device to be cooled, so that the use efficiency of the cooling device is improved, and the cooling cost is reduced.
Description
Technical Field
The invention relates to the technical field of medical imaging equipment, in particular to a cooling device and medical imaging equipment.
Background
The nuclear medicine imaging apparatus is an imaging apparatus that is currently used medically, and may include different types of apparatuses according to different CT techniques, for example, a Single-electron Emission Computed Tomography (SPECT) apparatus and a Positron Emission Computed Tomography (PET) apparatus, and the like. Nuclear medicine imaging devices are capable of imaging the distribution of a radionuclide-containing drug within a subject, which may reflect subject metabolism, tissue function, and structural morphology.
In the nuclear medicine imaging device, the most central component is a nuclear detector, which is used for detecting radiation (such as gamma rays) emitted by a radionuclide introduced into a subject, wherein the overall performance of the nuclear detector is greatly influenced by the working temperature, and the temperature of the detector in the whole system space needs to be kept uniform, if a deviation occurs, the imaging quality of the nuclear medicine imaging device is finally greatly influenced.
Currently, nuclear medicine detectors which are commonly used are mainly classified into a common Photomultiplier Tube (PMT) detector and a Silicon Photomultiplier detector (SiPM). The SiPM semiconductor detector is used as a novel semiconductor detector, the spatial resolution of PET equipment is greatly improved due to the compact structure and the higher signal-to-noise ratio, and the technical requirement of TOF-PET (time of flight-TOF) can be met due to the quick time response characteristic of the SiPM semiconductor detector. However, the SiPM semiconductor detector is extremely sensitive to temperature and temperature variation (temperature difference), and if the temperature rises by 1 degree, the increase is increased by about 5-10%, so that the temperature of the SiPM semiconductor detector must be controlled by a certain cooling system design, and the working performance of the SiPM semiconductor detector reaches the optimal state.
Disclosure of Invention
The invention provides a cooling device and a medical imaging apparatus.
According to a first aspect of embodiments of the present invention, there is provided a cooling apparatus including:
a water cooler for providing a cooling fluid, the water cooler comprising a first fluid inlet and a first fluid outlet;
the water separator comprises a water separator inlet and a plurality of water separator outlets, and the water separator inlet is connected with the first fluid outlet;
the first fluid pipelines are connected with the outlets of the water distributors;
the water collector comprises a water collector outlet and a plurality of water collector inlets, and the water collector inlets are connected with the first fluid pipeline;
the air cooling machine is used for converting the cooling fluid into cooling air and comprises a second fluid inlet and a second fluid outlet; the second fluid inlet is connected with the sump outlet, and the second fluid outlet is connected with the first fluid inlet.
Furthermore, the water collector is sleeved outside the water separator, and the inlet of the water separator and the outlet of the water separator penetrate out of the water collector respectively.
Furthermore, the water collector comprises a first water collecting main body and a second water collecting main body which are buckled with each other, and an accommodating cavity is formed between the first water collecting main body and the second water collecting main body; the water collector inlet is arranged on the first water collecting main body, and the water collector outlet is arranged on the second water collecting main body;
the water knockout drum includes the water knockout drum body, the water knockout drum body inlays to be located the holding intracavity, the water knockout drum entry with the water knockout drum export set up in on the water knockout drum body.
Further, the cooling device further comprises a fluid cooling plate, and the first fluid pipeline is arranged in the fluid cooling plate.
Further, the cooling device further comprises a temperature sensor electrically connected with the water cooler and used for detecting the temperature of the cooling fluid in the first fluid pipeline, and the water cooler is used for adjusting the temperature of the cooling fluid in the water cooler according to the temperature detected by the temperature sensor.
Further, the cooling device further comprises a flow controller, which is arranged in the first fluid pipeline and is used for adjusting the flow of the cooling fluid in the first fluid pipeline according to the temperature detected by the temperature sensor.
According to a second aspect of the embodiments of the present invention, there is provided a medical imaging apparatus, including a gantry, a plurality of detectors mounted on the gantry, and a cooling device as described above for cooling the detectors, wherein the first fluid conduit of the cooling device is disposed on the detectors.
Further, the detector includes photoelectric detection device and with the electron device that photoelectric detection device connects, first fluid pipeline set up in on the photoelectric detection device, the air-cooled machine includes the cold wind export, the cold wind export orientation electron device sets up.
Furthermore, the scanning frame is a circular ring-shaped scanning frame, and the plurality of detectors are uniformly distributed in the scanning frame along the circumferential direction of the scanning frame.
Further, the water distributor, the water collector and the air cooling machine are all arranged in the scanning frame.
According to the cooling device provided by the embodiment of the invention, the water cooling machine provides cooling fluid, the cooling fluid can be distributed to each first fluid pipeline through the water distributor to be used for cooling the fluid of the device to be cooled, and part of the cooling fluid can be converted into cooling air through the air cooling machine to carry out air cooling heat dissipation on the device to be cooled. The water cooler and the air cooler are connected through the water distributor and the water collector to form a closed-loop circulating cooling pipeline in a series-parallel combination mode, and fluid cooling and air cooling heat dissipation can be performed on the device to be cooled by adopting the same circulating cooling fluid, so that the use efficiency of the cooling device is improved, and the cooling cost is reduced.
According to the medical imaging equipment provided by the embodiment of the invention, the water cooling machine of the cooling device provides cooling fluid, so that the cooling fluid can be distributed to each first fluid pipeline through the water distributor for carrying out fluid cooling on the device to be cooled, and part of the cooling fluid can be converted into cooling air through the air cooling machine for carrying out air cooling heat dissipation on the device to be cooled. The water cooler and the air cooler are connected through the water distributor and the water collector to form a closed-loop circulating cooling pipeline in a series-parallel combination mode, fluid cooling and air cooling heat dissipation can be carried out on the device to be cooled by adopting the same circulating cooling fluid, the use efficiency of the cooling device is improved, the cooling cost is reduced, the problems of temperature imbalance and overhigh temperature of the detector can be solved, and therefore the working performance of the detector can reach the best state.
Drawings
Fig. 1 is a perspective view of a medical imaging apparatus according to an embodiment of the present invention.
Fig. 2 is a front view of a medical imaging device shown in an embodiment of the present invention.
FIG. 3 is a side view of a medical imaging device shown in an embodiment of the present invention.
Fig. 4 is a partially enlarged schematic view of the medical imaging device of fig. 3.
Fig. 5 is a schematic structural diagram of a detector of a medical imaging device according to an embodiment of the present invention.
Fig. 6 is a perspective view illustrating a separate arrangement of a water separator and a water collector of a cooling device of a medical imaging apparatus according to an embodiment of the present invention.
Fig. 7 is a perspective view illustrating an integrated arrangement of a water separator and a water collector of a cooling device of a medical imaging apparatus according to an embodiment of the present invention.
Figure 8 is a side view of the diverter and water collector shown in figure 7.
Fig. 9 is an exploded schematic view of the sump shown in fig. 7.
Figure 10 is a schematic perspective view of the diverter shown in figure 7.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or several of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present invention. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
The cooling device and the medical imaging apparatus of the present invention will be described in detail with reference to the accompanying drawings. The features of the following examples and embodiments may be combined with each other without conflict.
Referring to fig. 1 to 6, in which fig. 1 to 3 show a medical imaging apparatus 1, an embodiment of the present invention provides a cooling device, which can be applied to the medical imaging apparatus 1 shown in fig. 1 to 3, in particular, a nuclear medical imaging apparatus, for example, a SPECT imaging apparatus or a PET imaging apparatus, and the like, for cooling a device to be cooled in the medical imaging apparatus 1. However, without being limited thereto, the cooling device may also be used in other apparatuses to cool a device to be cooled.
The cooling device of the embodiment of the invention comprises:
a water cooler 10 for providing a cooling fluid, said water cooler 10 comprising a first fluid inlet 101 and a first fluid outlet 102.
The water knockout drum 210 comprises a water knockout drum inlet 201 and a plurality of water knockout drum outlets 202, wherein the water knockout drum inlet 201 is connected with the first fluid outlet 102 of the water cooler 10.
A plurality of first fluid conduits 410, each connected to a corresponding one of the plurality of diverter outlets 202 of the diverter 210, as shown in fig. 4.
A sump 220 comprising a sump outlet 204 and a plurality of sump inlets 203, the plurality of sump inlets 203 connected to the plurality of first fluid conduits 410 in a one-to-one correspondence, as shown in fig. 4.
The air-cooling machine 30 is used for converting the cooling fluid into cooling air, and the air-cooling machine 30 comprises a second fluid inlet 301 and a second fluid outlet 302. The second fluid inlet 301 of the air-cooling machine 30 is connected with the water collector outlet 204 of the water collector 220, and the second fluid outlet 302 of the air-cooling machine 30 is connected with the first fluid inlet 101 of the water-cooling machine 10.
In an application scenario where the device to be cooled includes a plurality of units to be cooled, when the cooling device of the present invention is used, the plurality of first fluid conduits 410 may be disposed on the plurality of units to be cooled in a one-to-one correspondence manner, for example, on a core component of the device to be cooled. The cooling fluid (e.g., water, 15% ethyl propanol, or other fluid that can be used for cooling) provided by the water cooler 10 flows into the water separator 210 from the first fluid outlet 102 through the water separator inlet 201 of the water separator 210, and then the cooling fluid is divided into the first fluid pipelines 410 through the water separator outlets 202 of the water separator 210, so that a plurality of units to be cooled of the device to be cooled are cooled simultaneously. Typically, the core components of the device to be cooled, which have a high cooling requirement, can be cooled by the first fluid conduit 410. Then the cooling fluid in each first fluid pipeline 410 is collected into the water collector 220 through the water collector inlet 203 of the water collector 220, the cooling fluid is guided to the air cooling machine 30 through the second fluid inlet 301 of the air cooling machine by the water collector outlet 204 of the water collector 220, and part of the cooling fluid is converted into cooling air by the air cooling machine 30 to perform air cooling heat dissipation on the device to be cooled, for example, other components of the device to be cooled which do not have high core component requirements on cooling. Finally, the cooling fluid is returned from the second fluid outlet 302 of the air-cooling machine 30 to the water-cooling machine 10 through the first fluid inlet 101 of the water-cooling machine 10, completing a fluid cooling cycle. The water cooler 10 may cool the cooling fluid flowing back to a desired temperature (e.g., 20 degrees celsius) for the next cooling cycle, and may also supply the cooling fluid to the water cooler 10 through other external devices (e.g., a water supply device) to supplement the cooling fluid lost in the air cooling heat dissipation. The above cooling process is repeated, thereby achieving the effect of circulating cooling. Therefore, the core component of the device to be cooled can be cooled and radiated by fluid in a fluid cooling mode, and other components of the device to be cooled can be radiated by air cooling radiation, so that comprehensive cooling radiation of the device to be cooled is realized.
According to the cooling device, the water cooling machine provides cooling fluid, the cooling fluid can be distributed to the first fluid pipelines through the water distributor and the water collector to be used for cooling fluid of the device to be cooled, and part of the cooling fluid can be converted into cooling air through the air cooling machine to be cooled and dissipated. The water cooler and the air cooler are connected through the water distributor and the water collector to form a closed-loop circulating cooling pipeline in a series-parallel combination mode, and fluid cooling and air cooling heat dissipation can be performed on the device to be cooled by adopting the same circulating cooling fluid, so that the use efficiency of the cooling device is improved, and the cooling cost is reduced.
In an embodiment, the water cooler 10 may be an integrated circulating water cooler, and may include a pressure circulating pump, a fluid container, and a cooler, or may be separately composed of components in a distributed manner to achieve the functions of fluid pumping circulation, fluid storage, and fluid cooling and heat dissipation.
Referring to fig. 4 and 5, in one embodiment, the cooling device of the present invention further includes a fluid cooling plate 40, the first fluid conduit 410 is disposed in the fluid cooling plate 40, and the fluid cooling plate 40 may be attached to a core component of the device to be cooled. The cooling fluid provided by the water cooler 10 can flow from the water separator 210 through the first fluid pipeline 410 and pass through the fluid cooling plate 40 arranged on the device to be cooled, so as to cool the core component of the device to be cooled.
Alternatively, the fluid cooling plate 40 may be made of an aluminum alloy plate having a relatively high thermal conductivity, and the first fluid tube 410 may be made of a copper tube having a relatively high thermal conductivity and brazed in the fluid cooling plate 40. When the cooling fluid circulates through the first fluid conduit 410 of the fluid cooling plate 40, the heat of the device to be cooled is dissipated in a heat transfer manner, and the influence of the heat radiation of the device to be cooled can be blocked.
Referring to fig. 4, in an embodiment, the cooling apparatus of the present invention further includes a temperature sensor 510, wherein the temperature sensor 510 is electrically connected to the water cooler 10 for detecting the temperature of the cooling fluid in the first fluid pipeline 410. The water cooler 10 is used for adjusting the temperature of the cooling fluid flowing out from the first fluid outlet 102 of the water cooler 10 according to the temperature detected by the temperature sensor 510.
Further, the cooling device of the present invention further includes a flow controller 520, wherein the flow controller 520 is disposed in the first fluid pipeline 410 and is configured to adjust the flow rate of the cooling fluid in the first fluid pipeline 410 according to the temperature detected by the temperature sensor 510.
Optionally, the temperature sensor 510 is disposed at the core component of the device to be cooled, and is used for detecting the real-time working temperature of the core component of the device to be cooled and feeding back a temperature signal to the water cooler 10 to adjust the temperature of the cooling fluid. The flow controller 520 is disposed among the water separator 210, the water collector 220, and the fluid cooling plate 40, and implements a flow regulation function, so as to regulate the specific flow of the cooling fluid in each branch of the first fluid pipeline 410 based on the real-time temperature detected by the temperature sensor 510, and precisely control the operating temperature of each core component of the device to be cooled.
In an embodiment, the cooling apparatus of the present invention further comprises a second fluid conduit 420, and the second fluid conduit 420 is connected between the water knockout drum inlet 201 of the water knockout drum 210 and the first fluid outlet 102 of the water cooler 10, and is used for guiding the cooling fluid from the water cooler 10 to the water knockout drum 210.
In one embodiment, the cooling apparatus of the present invention further comprises a third fluid pipe 430, and the third fluid pipe 430 is connected between the second fluid inlet 301 of the air-cooling machine 30 and the sump outlet 204 of the sump 220, for guiding the cooling fluid from the sump 220 into the air-cooling machine 30.
In an embodiment, the cooling device of the present invention further includes a fourth fluid conduit 440, and the fourth fluid conduit 440 is connected between the second fluid outlet 302 of the air-cooling machine 30 and the first fluid inlet 101 of the water-cooling machine 10, and is used for guiding the cooling fluid from the air-cooling machine 30 back to the water-cooling machine 10.
In one embodiment, the cooling device of the present invention further includes a cover (not shown) covering the device to be cooled, the water separator 210, and the water collector 220, and a dehumidifier 80. In one example, the device to be cooled includes a photodetector and a back-end electronic component, the casing and the dehumidifier 80 can be used as a heat-blocking and condensation-preventing system, when a cooling fluid with a temperature lower than that of a working environment circulates through the water separator 210 and the water separator 220 or the fluid cooling plate 40, a condensation phenomenon can be formed on the surface of the casing, which may damage the photodetector, a circuit board and other electronic components, the water separator 210, the water separator 220 or the fluid cooling plate 40 and the photodetector are enclosed in a closed working environment through the casing, the humidity in the enclosed space is reduced through the dehumidifier 80 to prevent the condensation, and the heat of the back-end electronic component can be prevented from being greatly radiated onto the photodetector to affect the temperature of the back-end electronic component. Optionally, the enclosure is a thermally insulated non-metallic panel enclosure.
In the cooling apparatus according to the embodiment of the present invention, the water separator 210 and the water collector 220 may be separately provided (as an example shown in fig. 6) or may be integrally provided. In the example shown in fig. 7 to 10, the water separator 210 and the water collector 220 are integrally provided, wherein the water collector 220 is sleeved outside the water separator 210, and the water separator inlet 201 and the water separator outlet 202 respectively penetrate through the water collector 220. By sleeving the water collector 220 outside the water separator 210, the water separator 210 which has the lowest temperature and is most likely to generate condensed water is built inside the water collector 220, so that the water separator 210 and the water collector 220 with double-layer walls are formed, and the condensed water in the water separator 210 can be eliminated fundamentally. And compare in directly placing water knockout drum 210 in ambient temperature, embed water knockout drum 210 in water collector 220, can effectively reduce the on-the-way temperature loss of water knockout drum 210, and then effectively improve the cooling efficiency of water knockout drum 210 and solve and reduce the problem such as water knockout drum 210 condensation.
Referring to fig. 9 and 10, in one embodiment, the water collector 220 includes a first water collecting body 221 and a second water collecting body 222 which are fastened to each other. The first water collecting body 221 is formed with a first receiving space 231, and the second water collecting body 222 is formed with a second receiving space 232. After the first water collecting main body 221 and the second water collecting main body 222 are fastened to each other, an accommodating cavity 233 is formed therebetween, that is, the first water collecting main body 221 and the second water collecting main body 222 are fastened and sealed together, and the first accommodating space 231 and the second accommodating space 232 together form the accommodating cavity 233, through which cooling fluid can flow. The water separator 210 includes a water separating body 211, and the water separating body 211 is embedded in the accommodating chamber 233, thereby forming the water separator 210 and the water collector 220 having a double-walled form.
Further, the first water collecting body 221 and the second water collecting body 222 are respectively provided with a connecting hole 205, and the first water collecting body 221 and the second water collecting body 222 are inserted into the respective connecting holes 205 through fasteners, so as to be fastened with each other to form the water collector 220. In another embodiment, the first and second water collecting bodies 221 and 222 of the water collector 220 may be integrally formed.
In one embodiment, the collector inlet 203 is disposed on the first collecting body 221 and communicates with the first collecting body 221, and the collector outlet 204 is disposed on the second collecting body 222 and communicates with the second collecting body 222. The water separator inlet 201 and the water separator outlet 202 are disposed on the water separating main body 211 and are respectively communicated with the water separating main body 211.
Further, the diverter inlet 201 and the diverter outlet 202 are located on both sides of the diverter body 211. The second water collecting body 222 is provided with a first through hole 206, and the water separator inlet 201 penetrates out of the second water collecting body 222 through the first through hole 206. The first water collecting main body 221 is provided with a second through hole 207, and the water separator outlet 202 penetrates out of the first water collecting main body 221 through the second through hole 207. The diverter inlet 201 and the collector outlet 204 are then located on one side of the first collection body 221 and the diverter outlet 202 and the collector inlet 203 are located on one side of the second collection body 222.
Optionally, a sealing ring is arranged between the water separator inlet 201 and the first through hole 206 for sealing connection, and a sealing ring is arranged between the water separator outlet 202 and the second through hole 207 for sealing connection, so as to ensure the sealing performance of the water separator 210 and the water collector 220.
In one embodiment, the water diversion body 211 is an annular closed tube, and the first water collection body 221 and the second water collection body 222 are fastened to form an annular closed tube. Optionally, the water diversion main body 211 is a circular ring-shaped closed pipe body, and the first water collection main body 221 and the second water collection main body 222 are circular ring-shaped closed pipe bodies. Or the water diversion main body 211 is a square annular closed pipe body, and the first water collection main body 221 and the second water collection main body 222 are square annular closed pipe bodies. Of course, the shapes of the water dividing body 211, the first water collecting body 221 and the second water collecting body 222 are not limited to the above two shapes, and any ring-shaped closed shape is within the protection scope of the present invention. The material of the water separator 210 and the water collector 220 may be seamless stainless steel pipe (the cross-sectional form is not limited), but is not limited thereto.
In the example shown in fig. 7 to 10, when the water separator 210 and the water collector 220 are installed, the water separating main body 211 of the water separator 210 is first embedded in the first receiving space 231 of the first water collecting main body 221 (or in the second receiving space 232 of the second water collecting main body 222), then the second water collecting main body 222 is fastened to the first water collecting main body 221 (or the first water collecting main body 221 is fastened to the second water collecting main body 222), so that the water separating main body 211 is embedded in the receiving cavity 233 of the water collector 220, and finally the first water collecting main body 221 and the second water collecting main body 222 are fastened to form the water collector 220 through fasteners (not shown) penetrating through the connecting holes 205 of the first water collecting main body 221 and the second water collecting main body 222, so as to complete the installation of the water separator 210 and the water collector 220.
Referring again to fig. 1 to 3, an embodiment of the present invention further provides a medical imaging apparatus 1, which includes a gantry, a plurality of detectors 900 mounted on the gantry, and a cooling device as described above, the cooling device is used for cooling the detectors 900, and the first fluid pipeline 410 of the cooling device is disposed on the detectors 900. It should be noted that the description of the cooling device in the above-described examples and embodiments is also applicable to the medical imaging apparatus 1 of the present invention. Alternatively, the medical imaging apparatus 1 of the present invention, which may include a PET, PET/CT, PET/MR, etc., apparatus, mainly includes a gantry 60, a connector 70 provided on the gantry 60, and a plurality of detectors 900 arranged in an array along a circumferential direction of an axial diameter of the connector 70.
According to the medical imaging apparatus 1 of the present invention, the water cooler 10, the water separator 210, the water collector 220, and the air cooler 30 of the cooling device together form a closed loop type circulating cooling system, the cooling fluid provided by the water cooler 10 can guide the cooling fluid through the water separator to perform fluid cooling on the detector 900, the cooling fluid can be guided to the air cooler 30 through the water collector 220, and the air cooler 30 converts the cooling fluid into cooling air to perform air cooling heat dissipation on the detector 900. The water cooler and the air cooler are connected through the water separator and the water collector to form a closed-loop circulating cooling pipeline in a series-parallel combination mode, and fluid cooling and air cooling heat dissipation can be performed on the detector 900 by adopting the same circulating cooling fluid, so that the use efficiency of the cooling device is improved, the cooling cost is reduced, the problems of temperature imbalance and overhigh temperature of the detector 900 can be solved, and the working performance of the detector 900 can reach the best state.
Referring to fig. 5, in an embodiment, the detector 900 includes a photoelectric detection device 901 and an electronic device 902 connected to the photoelectric detection device 901, the first fluid pipeline 410 is disposed on the photoelectric detection device 901, the air cooling machine 30 includes a cold air outlet 303, and the cold air outlet 303 is disposed toward the electronic device 902. The fluid cooling heat dissipation can be carried out on the photoelectric detection device 901 of the detector 900 in a fluid cooling mode, the rear-end electronic device 902 of the detector 900 and other electronic devices in the scanning frame can be cooled through air cooling heat dissipation, and therefore comprehensive cooling heat dissipation of the detector 900 and the electronic devices in the scanning frame is achieved.
In one embodiment, the number of fluid cooling plates 40, first fluid conduits 410, diverter outlets 202, and collector inlets 203 is equal to the number of components to be cooled. Optionally, a plurality of collector inlets 203 are uniformly distributed on the first collecting body 221. The inlets 201 of the water distributors are uniformly distributed on the water distribution main body 211. The first plurality of through holes 206 and the water collector inlets 203 are spaced apart. Furthermore, the plurality of water collector inlets 203 are uniformly distributed on the first water collecting main body 221, and the plurality of water distributor inlets 201 are uniformly distributed on the water distributing main body 211, so that the total lengths of the cooling fluid in the plurality of parallel pipeline branches can be kept equal, the pressure drop can be kept the same, and the flow in the branches can be basically the same structurally.
Referring to fig. 4 and 5, the detector 900 serves as a core component of the medical imaging device for receiving and processing gamma ray imaging, and is also a main unit requiring temperature control. The detectors 900 are uniformly arranged on the connector 70 along the circumference, the water segregators 210 and the water collectors 220 are respectively provided with water segregator outlets 202 and water collector inlets 203 which have the same number as the detector 900 ring array, and the water segregator outlets and the water collector inlets 203 are connected with copper pipes in a fluid cooling plate of the detector 900 through hoses to form parallel pipelines. Further, the detector 900 may include a photodetector 901 and a back-end electronic component 902 which are core components, where the photodetector 901 is a temperature sensitive component but generates a small amount of heat, and the back-end electronic component 902 has a low requirement on temperature but generates a large amount of heat. The photodetector 901 is fixed on one side of the fluid cooling plate 40 near the first fluid conduit 410 in the fluid cooling plate 40, while the back-end electronic component 902 is disposed on the other side of the fluid cooling plate 40 and encapsulated by the porous plate 903, which is advantageous for heat dissipation. The fluid cooled plate 40 also serves to block heat transfer from the back end electronics 902 to the photodetector 901, which affects temperature equalization. In addition, the air cooler 30 is connected in series with the water separator 210 and the water collector 220, so that the same cooling fluid can be used for heat convection, and forced cold air is generated to dissipate heat of the rear-end electronic component 902 with larger heat productivity. The cooling fluid provided by the integrated circulating water cooler enters the water separator 210 and the water collector 220 and is distributed to the fluid cooling plates 40 of the detectors 900 connected in parallel, and the flow and the initial temperature of the cooling fluid are dynamically controlled by the combination of the configured temperature sensor 510 and the flow controller 520, so that the working temperature deviation of the core component photoelectric detectors 901 of the detectors 900 arranged in the circumferential array is smaller than 1 degree, and finally the temperature balance is achieved.
In one embodiment, the gantry includes a frame 60 and a cover plate (not shown) covering the frame 60, a closed accommodating space is formed between the frame 60 and the cover plate, and the detector 900, the water separator 210 and the water collector 220 are installed in the accommodating space. Alternatively, the frame 20 may be an aluminum alloy cast structure. The dehumidifier 80 may be installed in the scan frame to dehumidify the accommodating space.
In summary, in the medical imaging apparatus 1 of the present invention, the cooling fluid provided by the water cooler 10 is distributed to the fluid cooling plates 40 connected in parallel through the water separator 210 of the water separator 210 and the water separator 210 of the water collector 220, and then the flow rate and the initial temperature of the cooling fluid are dynamically controlled by the configured temperature sensor 510 and the flow controller 520 in combination, so that the working temperature deviation of each of the photodetectors 901 arranged in the gantry in a circumferential array is smaller than 1 °, and finally temperature equalization is achieved. After the cooling fluid flows through the air cooling machine 30, the air cooling machine 30 adopts a forced air cooling mode to dissipate heat of the rear-end electronic component 902, which is beneficial to ensuring the overall performance parameters of the medical imaging equipment and the stability and reliability of the equipment and improving the final imaging image quality. In addition, the heat resistance design of the large-heat part and the high-temperature sensitive part is adopted, so that unnecessary heat transfer and heat radiation are avoided, and the cooling efficiency is improved. The core component photoelectric detector 901 of the detector 900 is accurately controlled at a constant temperature, meanwhile, forced air cooling heat dissipation is carried out on the rear-end electronic component 902 of the detector 900, and finally the problem of temperature imbalance of the annular detector array and the problem of overhigh temperature of the rear-end electronic component are solved, so that the working performance of the detector reaches the best state.
The medical imaging apparatus 1 of the embodiment of the present invention, the cooling method by the cooling device, may include:
the method comprises the following steps: the cooling fluid output by the water cooler 10 is preset to a certain temperature, enters the water separator 210 through the second fluid pipeline 420, and is then respectively guided into the first fluid pipelines 410 in the fluid cooling plates 400 by the water separator 210, so as to perform fluid cooling on the photoelectric detector 901 of the detector 900. Optionally, the cooling fluid output by the water cooler 10 may be preset to 20 ℃, enter the water separator 210 through the second fluid pipe 420, and then be respectively introduced into the first fluid pipes 410 in the respective fluid cooling plates 400 by the water separator 210 to perform fluid cooling on the photoelectric detector 901, so that the temperature of the photoelectric detector is controlled to be 22 ℃ ± 1 ℃.
Step two: the temperature sensor 510 monitors the temperature of each photodetector 901 in real time, and if a certain change in the temperature of the photodetector 901 is detected, a signal is fed back to the controller of the water cooler 10 to adjust and change the preset temperature of the cooling fluid, and meanwhile, the controller of the water cooler 10 also transmits the signal to the flow controller 520 of the corresponding branch to adjust and change the flow rate of the cooling fluid in the branch, so that the temperature closed-loop detection control is achieved.
Step three: the cooling fluid is collected into the water collector 220 from the first fluid pipeline 410 of the fluid cooling plate 400, and then distributed into the serially connected air cooling machines 30 by the water collector 220, the air cooling machines 30 convert part of the cooling fluid into cold air to perform forced air cooling heat dissipation on the rear-end electronic component 902 and other electronic components in the scanning gantry, and the cooling fluid returns to the water cooling machine 10 after circulation, so that the closed-loop cooling process is completed.
Step four: in the whole circulation cooling process, the dehumidifier 80 reduces the humidity of the protection space surrounded by the non-metal heat insulation cover plate, and prevents the fluid cooling plate 400, the water separator 210 and the water collector 220 from condensing to influence the normal operation of the photoelectric detector 901. The temperature of the core component photoelectric detector 901 of the detector 900 is ensured to be balanced and stable, and the working performance of the detector 900 is kept to be optimal. In addition, the air cooling unit 30 uses the same circulating cooling fluid to perform forced air cooling heat dissipation on the rear-end electronic component 902, so that the use efficiency of the cooling device is improved, and the cooling cost is reduced.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A cooling apparatus for a probe, comprising:
a water cooler for providing a cooling fluid, the water cooler comprising a first fluid inlet and a first fluid outlet;
the water separator comprises a water separator inlet and a plurality of water separator outlets, and the water separator inlet is connected with the first fluid outlet;
the first fluid pipelines are connected with the outlets of the water distributors;
the water collector comprises a water collector outlet and a plurality of water collector inlets, and the water collector inlets are connected with the first fluid pipeline;
the air cooling machine is used for converting the cooling fluid into cooling air and comprises a second fluid inlet and a second fluid outlet; the second fluid inlet is connected with the water collector outlet, and the second fluid outlet is connected with the first fluid inlet;
the detector includes photoelectric detection device and with the electron device that photoelectric detection device connects, first fluid pipeline set up in on the photoelectric detection device, the air-cooled machine includes the cold wind export, the cold wind export orientation electron device sets up.
2. The cooling apparatus of claim 1, wherein the water trap is sleeved outside the water trap, and the water trap inlet and the water trap outlet extend through the water trap, respectively.
3. The cooling apparatus according to claim 2, wherein:
the water collector comprises a first water collecting main body and a second water collecting main body which are buckled with each other, and an accommodating cavity is formed between the first water collecting main body and the second water collecting main body; the water collector inlet is arranged on the first water collecting main body, and the water collector outlet is arranged on the second water collecting main body;
the water knockout drum includes the water knockout drum body, the water knockout drum body inlays to be located the holding intracavity, the water knockout drum entry with the water knockout drum export set up in on the water knockout drum body.
4. The cooling apparatus of claim 1, further comprising a fluid cooling plate, the first fluid conduit being disposed within the fluid cooling plate.
5. The cooling apparatus as set forth in claim 1, further comprising a temperature sensor electrically connected to said water chiller for sensing the temperature of the cooling fluid in said first fluid conduit, said water chiller being configured to regulate the temperature of the cooling fluid in said water chiller based on the temperature sensed by said temperature sensor.
6. The cooling apparatus as claimed in claim 5, further comprising a flow controller disposed in the first fluid conduit for adjusting the flow of the cooling fluid in the first fluid conduit according to the temperature detected by the temperature sensor.
7. Medical imaging apparatus comprising a gantry, a plurality of detectors mounted to the gantry, and a cooling device according to any one of claims 1-6 for cooling the detectors.
8. The medical imaging device of claim 7, wherein the gantry is a circular gantry, and the plurality of detectors are uniformly arranged in the gantry along a circumferential direction of the gantry.
9. The medical imaging device of claim 7, wherein the water trap, and the air-cooled machine are all mounted within the gantry.
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