CN112051530A - Medical imaging apparatus system and cooling control method thereof - Google Patents
Medical imaging apparatus system and cooling control method thereof Download PDFInfo
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- CN112051530A CN112051530A CN202010832611.8A CN202010832611A CN112051530A CN 112051530 A CN112051530 A CN 112051530A CN 202010832611 A CN202010832611 A CN 202010832611A CN 112051530 A CN112051530 A CN 112051530A
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- 238000001816 cooling Methods 0.000 title claims abstract description 211
- 238000002059 diagnostic imaging Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000003507 refrigerant Substances 0.000 claims abstract description 78
- 239000002826 coolant Substances 0.000 claims description 15
- 239000000110 cooling liquid Substances 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000007613 environmental effect Effects 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 104
- 238000010586 diagram Methods 0.000 description 6
- 239000001307 helium Substances 0.000 description 5
- 229910052734 helium Inorganic materials 0.000 description 5
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 5
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- 230000009471 action Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
- G01R33/3804—Additional hardware for cooling or heating of the magnet assembly, for housing a cooled or heated part of the magnet assembly or for temperature control of the magnet assembly
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Abstract
The application relates to a medical imaging equipment system and a cooling control method thereof. The heat exchange device comprises a first input port, a first output port, a second input port and a second output port. The second input port is communicated with the cooling output port of the gas compressor, and the second output port is communicated with the cooling input port of the gas compressor. The heat exchanger and the gas compressor thus constitute a cooling circuit. The input pipeline is respectively connected with the input port and the first input port of the cooling device. The output pipeline is respectively connected with the output port and the first output port of the cooling device. Since the gas compressor needs to be cooled continuously, the refrigerant medium can be continuously introduced into the passage formed by the output pipeline and the heat exchange device. Refrigerant medium can be introduced into a passage formed by the input pipeline, the output pipeline and the cooling device according to the requirement, so that the energy consumption can be reduced, and the cost can be saved.
Description
Technical Field
The invention relates to the field of medical equipment, in particular to a medical imaging equipment system and a cooling control method thereof.
Background
With the continuous upgrading of the product performance of large medical equipment, the electronic equipment in the large medical equipment puts higher requirements on the temperature fluctuation of the coolant. This requirement increases the power consumption of the cooling system of large medical devices. When the large-scale medical equipment is not used, parts of the large-scale medical equipment cannot be closed and still need to be operated, so that the parts need to be continuously cooled. However, when the large medical equipment is not used, some parts do not work and do not need to be cooled. When the traditional cooling system works, all parts of large-scale medical equipment are cooled, so that energy waste is caused.
Magnetic resonance apparatuses are large medical apparatuses which are commonly used. The helium compressor in the magnetic resonance apparatus needs to be continuously operated when the magnetic resonance apparatus is not in operation. This is because the helium compressor must be kept on in order to keep the magnetic field in the magnetic resonance apparatus from quenching even if the magnetic resonance apparatus is not operating. Therefore, when the magnetic resonance apparatus is not in operation, the cooling system of the magnetic resonance apparatus also needs to be operated to cool the helium compressor. When the cooling system works, the cooling system can not only cool and dissipate heat for the helium compressor, but also dissipate heat for other non-working parts in the magnetic resonance equipment, thereby causing excessive energy consumption.
Disclosure of Invention
In view of the above, it is necessary to provide a medical imaging apparatus system and a cooling control method thereof.
A medical imaging device system, comprising:
a cooling device;
a gas compressor;
the heat exchange device comprises a first input port, a first output port, a second input port and a second output port, the second input port is communicated with the cooling output port of the gas compressor, and the second output port is communicated with the cooling input port of the gas compressor;
an input pipeline which is respectively connected with the input port of the cooling device and the first input port; and
and the output pipeline is respectively connected with the output port of the cooling device and the first output port.
In one embodiment, the gas compressor further comprises an air cooling device, an input port of the air cooling device is connected with a cooling output port of the gas compressor, and an output port of the air cooling device is connected with the second input port.
In one embodiment, further comprising:
a first three-way switch, the first three-way switch comprising:
the first interface is connected with the second input port;
the second interface is connected with an output port of the air cooling device;
a third interface connected to a cooling output port of the gas compressor; and
and the first switching device and the second switching device are respectively arranged on the first input port and the first output port of the heat exchange device.
In one embodiment, further comprising a second three-way switch, the second three-way switch comprising:
a fourth port connected to a cooling input of the gas compressor;
a fifth interface connected with the second input port; and
and the sixth interface is connected with the first interface.
In one embodiment, the air cooling device and the gas compressor are provided with a phase-change cooling liquid circulation therebetween, the air cooling device is arranged at a position higher than the gas compressor, and the height difference between the air cooling device and the gas compressor is larger than a preset height.
A cooling control method of the medical imaging apparatus system, wherein the gas compressor is cooled by circulating a coolant medium among the gas compressor, the air cooling device and the heat exchanging device, the cooling control method comprising:
judging the environmental temperature and the preset value;
and when the ambient temperature is greater than the preset value, controlling the first switching device and the second switching device to be started, and controlling the third interface and the first interface to be switched on, and the fifth interface and the sixth interface to be switched on.
In one embodiment, a method comprises:
and when the temperature of the refrigerant medium does not reach a preset range, controlling the flow of the refrigerant medium flowing to the fifth interface from the sixth interface to adjust the temperature of the refrigerant medium.
In one embodiment, the method comprises:
judging whether the temperature of the refrigerant medium reaches a preset range or not;
and when the ambient temperature is not greater than the preset value, controlling the first switching device and the second switching device to be closed, the second interface and the first interface to be connected, and the fourth interface and the sixth interface to be connected.
In one embodiment, the method comprises:
when the temperature of the refrigerant medium does not reach the preset range, the flow rate of the refrigerant medium flowing from the output port of the gas compressor to the air cooling device is adjusted through the first three-way switch to adjust the temperature of the refrigerant medium.
In one embodiment, the system further comprises a driving device and an expansion tank which are sequentially connected between the input port of the gas compressor and the second output port.
A cooling control method of a medical imaging device system, the cooling system of the medical device comprising:
the system comprises a gas compressor, a heat exchange device and a cooling device; the gas compressor is connected with the heat exchange device, and the cooling device is connected with the heat exchange device;
in one embodiment, the control method includes:
in a first time period, the heat exchange device and the cooling device exchange heat with a first load;
in a second time period, the heat exchange device and the cooling device exchange heat with a second load;
and in the first time period and the second time period, the heat exchange device and the gas compressor exchange heat with a third load.
In one embodiment, when the first load is less than the third load, or the second load is less than the third load, an additional cooling device of a cooling system of the medical apparatus is activated to cool the gas compressor.
In one embodiment, the heat exchanger and the gas compressor are connected through a pipeline, a refrigerant medium is arranged in the pipeline, and the additional cooling device cools the pipeline or the heat exchanger.
In one embodiment, the heat exchange device and the cooling device are connected through a pipeline, and a liquid or gaseous cooling medium is contained in the pipeline; the additional cooling device is a fan or a water tank.
The medical imaging equipment system that this application embodiment provided includes cooling device, gas compressor, heat transfer device, input pipeline and output pipeline. The heat exchange device comprises a first input port, a first output port, a second input port and a second output port. The second input port is communicated with a cooling output port of the gas compressor, and the second output port is communicated with the cooling input port of the gas compressor. The heat exchange means and the gas compressor thus constitute a cooling circuit. The input pipeline is respectively connected with the input port of the cooling device and the first input port. The output pipeline is respectively connected with the output port of the cooling device and the first output port. Thus, the inlet duct, the outlet duct and the cooling device constitute one passage. The input pipeline, the output pipeline and the heat exchange device form a passage. The passage formed by the input pipeline, the output pipeline and the heat exchange device can exchange heat for a cooling loop formed by the heat exchange device and the gas compressor, so that the gas compressor can be cooled by a refrigerant medium. And a passage formed by the input pipeline, the output pipeline and the cooling device and a passage formed by the input pipeline, the output pipeline and the heat exchange device are mutually independent. Since the gas compressor requires continuous cooling, a coolant medium can be continuously introduced into the passage formed by the outlet line and the heat exchanger. Refrigerant medium can be introduced into a passage formed by the input pipeline, the output pipeline and the cooling device according to needs, and the working state is not required to be kept all the time, so that the energy consumption can be reduced, and the cost is saved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a medical imaging device system provided in an embodiment of the present application;
FIG. 2 is a schematic diagram of a medical imaging device system provided by an embodiment of the present application;
FIG. 3 is a schematic diagram of a medical imaging device system provided by an embodiment of the present application;
FIG. 4 is a schematic diagram of a medical imaging device system provided by an embodiment of the present application;
FIG. 5 is a schematic diagram of a medical imaging device system provided by an embodiment of the present application;
FIG. 6 is a system diagram of a medical imaging device according to an embodiment of the present application;
fig. 7 is a flowchart of a cooling control method of a medical imaging device system according to an embodiment of the present application.
Description of reference numerals:
a medical imaging device system 10; a cooling device 110; a gas compressor 120; a heat exchange device 200; a first input port 210; a first output port 220; a second input port 230; a second output port 240; an input conduit 310; an output duct 320; an air cooling device 400; a first three-way switch 510; a first interface 512; a second interface 514; a third interface 516; a first switching device 520; a second switching device 530; a second three-way switch 540; a fourth interface 542; a fifth interface 544; a sixth interface 546; a drive device 610; an expansion tank 620; a quick coupling 630; a thermometer 640; a pressure gauge 650; a safety valve 660; a flow meter 670; a filter 680; an automatic exhaust valve 690.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Referring to fig. 1, an embodiment of the present application provides a medical imaging apparatus system 10. The medical imaging device system 10 is applied to a medical imaging device system. The medical imaging apparatus system comprises a cooling device 110, a gas compressor 120, a heat exchanging device 200, an input pipe 310 and an output pipe 320. The heat exchange device 200 includes a first input port 210, a first output port 220, a second input port 230, and a second output port 240. The second input port 230 is in communication with the output of the compressor and the second output port 240 is in communication with the input of the compressor. The inlet line 310 is connected to the inlet of the cooling device 110 and the first inlet 210, respectively. The output pipe 320 is connected to the output port of the cooling device 110 and the first output port 220, respectively.
The medical imaging device system 10 may be a magnetic resonance system. The medical imaging device system 10 may also include a main magnet (e.g., a superconducting magnet), gradient coils, radio frequency coils, pulse sequencers, radio frequency amplifiers, gradient amplifiers, etc. for generating a static magnetic field. The gradient coils are used for generating gradient fields superposed on the static magnetic field. The radio frequency coil is used for emitting a radio frequency excitation signal to excite a human body to generate a magnetic resonance signal. The pulse sequencer is used to issue a pulse sequence. The radio frequency amplifier is used for amplifying radio frequency signals. The gradient amplifier is used for amplifying gradient signals.
The medical imaging device system 10 further includes an image processor for performing image reconstruction, a computer console for performing human-computer interaction, a display for displaying images, and the like. The main magnet, the gradient coils, and the radio frequency coil are disposed between scans. The radio frequency amplifier, the gradient amplifier power supply, and the like may be provided between devices. The image processor, the computer console, the display and the like may be provided in an operating room.
The cooling device 110 may be used to reduce the heat generated by the components of the rf coil, the gradient coil, and the electronics between the devices during operation. The cooling device 110 may also be a cooling cabinet. The cooling machine cabinet can be fed with a cooling medium. The refrigerant can exchange heat with the above components, thereby achieving the purpose of cooling.
The heat exchange device 200 may be a heat exchange plate. The heat exchange plate can be a clamp mode heat exchanger, an immersion type coil heat exchanger, a spray type heat exchanger, a plate type heat exchanger, a shell-and-tube heat exchanger, a double-tube plate heat exchanger and the like.
The second input port 230 is in communication with a cooling output port of the gas compressor 120 and the second output port 240 is in communication with a cooling input port of the gas compressor 120. Thus, the heat exchange device 200 and the gas compressor 120 may constitute a loop. A refrigerant medium may be placed in the circuit. The refrigerant medium absorbs heat in the gas compressor 120 and then exchanges heat with the outside in the heat exchange device 200, thereby releasing heat to the outside. It is understood that the cooling input of the gas compressor 120 may be a cooler or cooling piping of the gas compressor 120. The cooling output of the gas compressor 120 may be the output of a cooler or cooling pipe of the gas compressor 120.
The input pipe 310 can input the refrigerant medium with lower temperature to the heat exchange device 200. The refrigerant medium with higher temperature after heat exchange by the gas compressor 120 can exchange heat with the refrigerant medium with lower temperature in the heat exchange device 200. The refrigerant medium with lower temperature is output through the output pipeline 320 after the temperature of the refrigerant medium with lower temperature is raised, and is cooled through equipment such as a cooling tower, and then enters the heat exchange device 200 for circulation.
In addition, the input pipe 310 is also connected to an input port of the cooling device 110, and the output pipe 320 is also connected to an output port of the cooling device 110. Therefore, the refrigerant medium with a low temperature input from the input pipe 310 is output from the output port of the cooling device 110 after the cooling device 110 cools the component, and enters the equipment such as the cooling tower again to perform a cooling cycle. Therefore, the cooling device 110 and the heat exchanging device 200 can be two parallel pipes.
When cooling of the cooling device 110 is required, the input pipe 310, the output pipe 320 and the cooling device 110 may be communicated. When heat exchange is required to be performed on the heat exchange device 200, the input pipe 310, the output pipe 320 and the heat exchange device 200 can be communicated to form a passage. The two passages are parallel to each other, and the passage into which the refrigerant medium is introduced can be selected as required. For example, at night when the medical imaging apparatus system is substantially in an off-state, the path formed by the input pipe 310, the output pipe 320 and the cooling device 110 may be closed, so that the power consumption may be reduced. The gas compressor 120 maintains the main magnet with sufficient liquid helium and therefore requires constant operating cool down. At this time, a passage formed by the input pipe 310, the output pipe 320 and the heat exchanger 200 may be opened to cool the gas compressor 120, so that the normal operation of the magnet may be ensured.
In one embodiment, the input pipe 310 may be respectively communicated with the cooling device 110 and the heat exchange device 200 through a tee joint. The output pipe 320 may be respectively communicated with the cooling device 110 and the heat exchange device 200 through a tee joint.
The medical imaging apparatus system 10 provided by the embodiment of the present application includes a cooling device 110, a gas compressor 120, a heat exchanging device 200, an input pipe 310, and an output pipe 320. The heat exchange device 200 includes a first input port 210, a first output port 220, a second input port 230, and a second output port 240. The second input port 230 is in communication with a cooling output port of the gas compressor 120 and the second output port 240 is in communication with a cooling input port of the gas compressor 120. The heat exchange device 200 and the gas compressor 120 thus constitute a cooling circuit. The inlet line 310 is connected to the inlet of the cooling device 110 and the first inlet 210, respectively. The output pipe 320 is connected to the output port of the cooling device 110 and the first output port 220, respectively. Thus, the input pipe 310, the output pipe 320 and the cooling device 110 constitute one passage. The input pipe 310, the output pipe 320 and the heat exchange device 200 constitute a passage. The passage formed by the input pipe 310, the output pipe 320 and the heat exchanger 200 may exchange heat with a cooling circuit formed by the heat exchanger 200 and the gas compressor 120, so that the gas compressor 120 may be cooled by a refrigerant medium. The path formed by the input pipe 310, the output pipe 320 and the cooling device 110 and the path formed by the input pipe 310, the output pipe 320 and the heat exchange device 200 are independent of each other. Since the gas compressor 120 needs to be cooled continuously, a refrigerant medium can be continuously introduced into the passage formed by the outlet pipe 320 and the heat exchange device 200. Refrigerant medium can be introduced into the passage formed by the input pipeline 310, the output pipeline 320 and the cooling device 110 according to needs, and the working state is not required to be kept all the time, so that the energy consumption can be reduced, and the cost can be saved.
It is understood that the gas compressor 120 may be other components requiring continuous heat dissipation, and the heat dissipation of the components may be no greater than 10 kw.
In one embodiment, the refrigerant medium may be water, mixed glycol, or other cooling fluid used in air conditioning systems.
Referring to fig. 2, in one embodiment, the medical imaging apparatus system 10 further includes an air cooling device 400. The input port of the air cooling device 400 is connected to the output port of the compressor. The output port of the air cooling device 400 is connected to the second input port 230. Therefore, after flowing out through the output port of the compressor, the refrigerant may flow into the air cooling device 400 through a pipeline, and then may be input through the output port of the air cooling device 400 and input through the second input port 230 into the heat exchanging device 200 for heat exchange. The air cooling device 400 can increase the heat exchange area and the air flow rate to remove heat in the refrigerant medium. Therefore, before the refrigerant enters the heat exchanging device 200, the air cooling device 400 may exchange heat with the refrigerant, and then the cooling device 110 may cool the refrigerant, so as to further reduce the temperature of the refrigerant flowing through the gas compressor 120. In one embodiment, the air cooling device 400 may be an air cooling unit.
Referring to fig. 3, in one embodiment, the medical imaging device system 10 includes a first three-way switch 510. The first three-way switch 510 includes a first port 512, a second port 514, and a third port 516. The medical imaging device system 10 further comprises a first switching means 520 and a second switching means 530. The first port 512 is connected to the second input port 230. The second port 514 is connected to an output port of the air cooling device 400. The third port 516 is used for connecting with a cooling output port of the gas compressor 120. The first switching device 520 and the second switching device 530 are respectively disposed at the first input port 210 and the first output port 220 of the heat exchanging device 200.
It is understood that when the heat exchange device 200 is not required to operate, the first switch device 520 and the second switch device 530 can be turned off, and the refrigerant cannot be introduced into the heat exchange device 200. When the heat exchanging device 200 is required to operate, the first switching device 520 and the second switching device 530 can be turned on, and at this time, the refrigerant can enter the heat exchanging device 200.
In one embodiment, the first three-way switch 510 may be a three-way solenoid valve. The three-way electromagnetic valve can control the mutual communication of the first port 512, the second port 514 and the third port 516 and the opening degree after the communication is formed.
It can be understood that when the first port 512 is conducted with the second port 514, and the third port 516 is not conducted with the first port 512, the cooling medium can be conducted into the heat exchanging device 200 through the air cooling device 400, the second port 514 and the first port 512. At this time, the air cooling device 400 and the heat exchanging device 200 are connected in series. When the air cooling device 400 is not required to operate, the third interface 516 and the first interface 512 may be conducted, so that the second interface 514 and the first interface 512 are not conducted, and the air cooling device 400 is short-circuited. Refrigerant medium can directly flow into the heat exchange device 200 through the gas compressor 120 for heat exchange.
Referring to fig. 4, in one embodiment, the medical imaging device system 10 further includes a second three-way switch 540. The second three-way switch 540 includes a fourth interface 542, a fifth interface 544, and a sixth interface 546. The fourth port 542 is connected to the cooling input of the gas compressor 120. The fifth port 544 is connected to the second input port 230, and the sixth port 546 is connected to the first port 512. The second three-way switch 540 can control whether the refrigerant medium enters the heat exchange device 200 or not and the amount of the refrigerant medium passing into the gas compressor 120. It is understood that when the fifth port 544 and the sixth port 546 are conductive, the cold medium can enter the cooling device 110 through the first port 512. By controlling the opening of the conduction of the fourth port 542 and the sixth port 546, the amount of direct access to the gas compressor 120 by the second three-way switch 540 can be determined. The amount of cold medium output from the fifth and sixth interfaces 544, 546 can be adjusted as desired.
Referring to fig. 5, in one embodiment, a phase change cooling liquid is circulated between the air cooling device 400 and the gas compressor 120. The air cooling device 400 is disposed at a position higher than the gas compressor 120. The height difference between the air cooling device 400 and the air compressor 120 is greater than a preset height. It can be understood that the phase-change cooling liquid in the gas compressor 120 after being heated by heat exchange changes from a liquid state to a gas state. The gaseous phase-change cooling liquid moves upwards, and moves downwards under the action of gravity after the phase-change cooling liquid changes into the liquid state. When the phase-change cooling liquid does not need to pass through the heat exchange device 200, that is, the phase-change cooling liquid only needs to be cooled by the air cooling device 400 and then enters the gas compressor 120, the phase-change cooling liquid firstly absorbs heat in the gas compressor 120 and turns into a gas state, and then the gas-state phase-change cooling liquid rises to conduct the air cooling device 400 and is cooled in the air cooling device 400 and turns into a liquid state. Under the action of gravity, the phase-change cooling liquid can flow into the gas compressor 120 again for cooling, then absorb heat again to change into a gaseous state for circulation, and further the phase-change cooling liquid can be circulated between the air cooling device 400 and the gas compressor 120 without external driving force or under the driving of smaller external driving force. It is understood that the preset height can be calculated by using energy conservation according to the parameters of the phase-change cooling liquid such as mass, flow rate, temperature and the like. In one embodiment, the preset height may be 2 meters. It is understood that the phase change coolant is one of the cold media. In one embodiment, the phase change coolant may be R134a refrigerant.
Referring to fig. 6, in one embodiment, the medical imaging apparatus system 10 further includes a driving device 610. The driving device 610 is connected between the cooling input of the gas compressor 120 and the second output 240. In one embodiment, the driving device 610 may be a pump body. A refrigerant medium can be driven to circulate between the gas compressor 120 and the heat exchanger 200 by the pump body.
In one embodiment, the water pump power of the cooling device 110 may be 4 kW. The power of the driving device 610 is 0.5 kW. Thus saving 3.5 degrees of electricity per hour when the cooling device 110 is not required to operate.
In one embodiment, the medical imaging device system 10 further comprises an expansion tank 620. The expansion tank 620 is connected between the heat exchange device 200 and the input port of the gas compression pump. The expansion tank 620 is used for supplementing the refrigerant medium when the pressure of the refrigerant medium in the pipeline connecting the gas compressor 120 and the heat exchange device 200 is reduced, so that the pressure in the pipeline reaches the preset pressure.
In one embodiment, the cooling input port and the cooling output port of the gas compressor 120 are provided with a quick coupling 630 respectively for easy replacement.
In one embodiment, a thermometer 640 for measuring the temperature of the refrigerant medium is further disposed between the gas compressor 120 and the driving device 610. The pipe between the driving means 610 and the heat exchanging means 200 is further provided with a pressure gauge 650.
In one embodiment, the output of the expansion tank 620 is also provided with a safety valve 660. The pipeline between the gas compressor 120 and the air cooling device 400 is also provided with a flow meter 670. The output conduit 320 is also provided with a flow meter 670.
In one embodiment, the input pipe 310 is provided with a filter 680 for filtering the refrigerant medium entering the heat exchange device 200. An automatic exhaust valve 690 is further arranged between the driving device 610 and the heat exchange device 200 to avoid accidents caused by overlarge pressure in the pipeline.
Referring to fig. 7, an embodiment of the present application further provides a cooling control method of the medical imaging apparatus system 10. The method is to circulate and cool the gas compressor 120 among the gas compressor 120, the air cooling device 400 and the heat exchanging device 200 through a cooling medium. The method comprises the following steps:
judging the environmental temperature and the preset value;
judging whether the temperature of the refrigerant medium reaches a preset range or not;
when the ambient temperature is greater than the preset value, the air cooling device 400 is controlled to be turned off, the first switching device 520 and the second switching device 530 are controlled to be turned on, the third interface 516 and the first interface 512 are connected, and the fifth interface 544 and the sixth interface 546 are connected.
It is understood that when the ambient temperature is greater than the preset temperature, the ambient temperature is higher, and the temperature of the gas compressor 120 is lowered more. The cooling effect of the heat exchange device 200 may be better than that of the air cooling device 400. Therefore, the first and second switching devices 520 and 530 may be controlled at this time, that is, the refrigerant medium with a relatively low temperature may enter the heat exchanging device 200 to exchange heat with the refrigerant medium with a relatively high temperature flowing through the gas compressor 120. Meanwhile, the cold medium passing through the gas compressor 120 can directly enter the heat exchange device 200 through the third interface 516, the first interface 512, the fifth interface 544 and the sixth interface 546 for heat exchange. The air-cooling device 400 can be short-circuited at this time. The air cooling device 400 may be stopped. Only the heat exchange device 200 is operated, so that the purpose of energy saving can be achieved.
In one embodiment, the preset temperature may be one of 10 ℃ to 15 ℃. The preset temperature may also be in the range of 10 ℃ to 15 ℃.
In one embodiment, the method comprises:
when the temperature of the refrigerant medium does not reach the preset range, the flow rate of the refrigerant medium that controls the sixth port 546 to flow to the fifth port 544 adjusts the temperature of the refrigerant medium.
It will be appreciated that the temperature of the refrigerant medium has a significant effect on cooling the gas compressor 120. Too high a temperature leads to a decrease in cooling capacity, and too low a temperature affects fluidity. When the temperature of the refrigerant medium reaches a preset range, the flowing of the refrigerant medium and the cooling heat exchange effect reach expectation.
In one embodiment, the temperature of the refrigerant medium may be measured, and the opening degree of the second three-way switch 540 may be controlled by PID.
In one embodiment, the preset range may be 4 ℃ to 30 ℃. When the temperature of the refrigerant medium does not reach the preset range, the amount of the refrigerant medium flowing from the sixth port 546 to the fifth port 544 in the second three-way switch 540 can be adjusted. For example, when the temperature of the cooling medium is low, the amount of cooling medium flowing into the fifth interface 544 may be reduced, such that more cooling medium flows through the fourth interface 542. When the temperature of the refrigerant medium is higher, which indicates that the temperature needs to be decreased, more refrigerant medium can flow to the heat exchange device 200 through the fifth connection 544, so as to increase the heat exchange amount.
In one embodiment, the control method includes:
when the ambient temperature is not greater than the preset value, the first switching device 520 and the second switching device 530 are controlled to be turned off, the second interface 514 and the first interface 512 are turned on, and the fourth interface 542 and the sixth interface 546 are controlled to be turned on.
It can be understood that when the ambient temperature is not greater than the preset value, the ambient temperature is lower at this time. The heat exchange of the refrigerant medium flowing through the gas compressor 120 can be performed only by the air cooling device 400. Therefore, the first switch device 520 and the second switch device 530 are turned off to prevent the refrigerant from entering the heat exchange device 200, and the heat exchange device 200 may not be required to operate. The cold medium flowing through the gas compressor 120 is circulated back to the gas compressor 120 through the air cooling device 400, the third port 516, the first port 512, the sixth port 546 and the fourth port 542. At this time, only the air cooling device 400 is needed to work, so that the purpose of saving energy consumption can be achieved.
In one embodiment, the control method further comprises:
when the temperature of the refrigerant medium does not reach the preset range, the flow rate of the refrigerant medium flowing from the cooling output port of the gas compressor 120 to the air cooling device 400 is adjusted by the first three-way switch 510 to adjust the temperature of the refrigerant medium. At this time, by adjusting the opening degrees of the first port 512 and the second port 514, the amount of the refrigerant medium flowing to the first port 512 through the third port 516 and the amount of the refrigerant medium flowing to the first port 512 through the second port 514 can be controlled, and further, the amount of the refrigerant medium heat-exchanged by the air-cooling device 400 can be controlled. For example, the mass of the refrigerant passing through the air-cooling device 400 may be increased when the temperature of the refrigerant is higher. At lower temperatures, the mass of the cooling medium passing through the air cooling device 400 may be reduced. In one embodiment, the temperature of the refrigerant medium may be measured, and the opening degree of the second three-way switch 540 may be controlled by PID according to the temperature of the refrigerant medium.
An embodiment of the present application further provides a cooling control method for a medical imaging device, where a cooling system for the medical imaging device includes: a gas compressor 120, a heat exchange device 200 and a cooling device 110; the gas compressor 120 is connected with the heat exchange device 200, and the cooling device 110 is connected with the heat exchange device 200;
in one embodiment, the cooling device 110 and the gas compressor 120 may be connected through the heat exchange device 200 or not connected through the heat exchange device 200; i.e. a direct connection between the cooling device 110 and the gas compressor 120 is possible. The cooling device 110 may directly cool the gas compressor 120. The cooling device 110 and the gas compressor 120 may also indirectly exchange heat through the heat exchange device 200.
The cooling device 110 and the gas compressor 120 may be in parallel. That is, the cooling device 110 and the gas compressor 120 may be connected in parallel to the first input port 210 and the first output port 220 of the heat exchange device 200 and the second input port 230 and the second output port 240 of the heat exchange device 200. The cooling device 110 may be connected to the first input port 210 and the first output port 220 to form a circulation loop. The gas compressor 120 may be connected to the second input port 230 and the second output port 240 to form a circulation loop. That is, the gas compressor 120 may also be indirectly communicated with the gas compressor 120 through the heat exchange device 200 to form a circulation loop.
The cooling device 110 and the gas compressor 120 may be in series. I.e. the cooling means 110 and said gas compressor 120 may be connected by a circulation loop. A refrigerant may be circulated between the cooling device 110 and the gas compressor 120 through the circulation circuit. That is, the gas compressor 120 may be directly connected to the cooling device 110 without passing through the heat exchange device 200 to form a circulation loop.
In one embodiment, the control method includes:
during a first time period, heat exchange is carried out between the heat exchange device 200 and the cooling device 110 by a first load; in a second time period, heat exchange is carried out between the heat exchange device 200 and the cooling device 110 by a second load; and in the first time period and the second time period, heat is exchanged between the heat exchange device 200 and the gas compressor 120 under a third load.
In one embodiment, the first period of time may be that the gas compressor 120 and the cooling device 110 exchange heat through the heat exchange device 200, and the first switching device 520 and the second switching device 530 between the cooling device 110 and the heat exchange device 200 are opened; the gas compressor 120 exchanges heat with the heat exchange device 200.
In one embodiment, the second time period may be that the first switching device 520 and the second switching device 530 between the cooling device 110 and the heat exchanging device 200 are turned off, and the gas compressor 120 exchanges heat with the heat exchanging device 200. The heat exchanging device 200 exchanges heat with the cooling device 110 through natural conduction of temperature.
In one embodiment, an additional cooling means of the cooling system of the medical device is activated to cool the gas compressor (120) when the first load is lower than the third load, which may be any value between 0 and 10KW (e.g. 0.5KW, 0.8KW, 1.2KW, 3.3KW, 4KW, 4.5KW, 9KW), or when the second load is lower than the third load, which may be any value lower than the third load, and the first load is lower than the third load.
When the first load is less than the third load, it means that the heat quantity taken from the heat exchanging device 200 by the cold medium in the cooling device 110 is less than the heat production quantity of the gas compressor 120. The gas compressor 120 therefore needs to be cooled by the additional cooling means. Similarly, when the second load is smaller than the third load, it means that the amount of heat exchanged with the cooling device 110 by the heat exchanging device 200 through natural conduction of temperature is smaller than the amount of heat generated by the gas compressor 120. The gas compressor 120 therefore needs to be cooled by the additional cooling means.
In one embodiment, the additional cooling device may be a fan, a water tank, other devices that can cool the cooling medium, or any combination of one or more thereof. The additional cooling device may be disposed on one or more pipes, may be disposed at any position between the gas compressor 120 and the heat exchanger 200, or may be disposed on the heat exchanger 200 to cool the heat exchanger 200 or a pipe on the heat exchanger 200.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (14)
1. A medical imaging device system, comprising:
a cooling device (110);
a gas compressor (120);
heat exchange means (200) comprising a first input (210), a first output (220), a second input (230) and a second output (240), said second input (230) being in communication with a cooling output of said gas compressor (120), said second output (240) being in communication with a cooling input of said gas compressor (120);
an inlet duct (310) connected to the inlet of the cooling device (110) and to the first inlet (210), respectively; and
an output duct (320) connected to the output of the cooling device (110) and the first output (220), respectively.
2. The medical imaging device system of claim 1, further comprising an air-cooling device (400), an input port of the air-cooling device (400) being connected to a cooling output port of the gas compressor (120), an output port of the air-cooling device (400) being connected to the second input port (230).
3. The medical imaging device system of claim 2, further comprising:
a first three-way switch (510), the first three-way switch (510) comprising:
a first port (512) connected to the second input port (230);
a second interface (514) connected to an output port of the air-cooling device (400);
a third interface (516) connected to a cooling output of the gas compressor (120); and
-first (520) and second (530) switching means arranged at said first input (210) and said first output (220) of said heat exchanging means (200), respectively.
4. The medical imaging device system of claim 3, further comprising a second three-way switch (540), the second three-way switch (540) comprising:
a fourth port (542) connected to a cooling input of the gas compressor (120);
a fifth port (544) connected to the second input port (230); and
a sixth interface (546) connected to the first interface (512).
5. The medical imaging device system of claim 4, wherein the air cooling device (400) and the gas compressor (120) have a phase change cooling liquid circulating therebetween, the air cooling device (400) is disposed at a position higher than the gas compressor (120), and a height difference between the air cooling device (400) and the gas compressor (120) is greater than a preset height.
6. A cooling control method of a medical imaging apparatus system as claimed in claim 4, the gas compressor (120) being cyclically cooled between the gas compressor (120), the air cooling device (400) and the heat exchanging device (200) by a cold medium, comprising:
judging the environmental temperature and the preset value;
when the ambient temperature is higher than the preset value, the first switch device (520) and the second switch device (530) are controlled to be turned on, the third interface (516) and the first interface (512) are switched on, and the fifth interface (544) and the sixth interface (546) are switched on.
7. The control method according to claim 6, characterized in that the method comprises:
judging whether the temperature of the refrigerant medium reaches a preset range or not;
when the temperature of the refrigerant medium does not reach the preset range, controlling the flow rate of the refrigerant medium flowing to the fifth interface (544) from the sixth interface (546) to adjust the temperature of the refrigerant medium.
8. The control method according to claim 6, characterized by comprising:
when the ambient temperature is not greater than the preset value, the first switching device (520) and the second switching device (530) are controlled to be closed, the second interface (514) and the first interface (512) are controlled to be connected, and the fourth interface (542) and the sixth interface (546) are controlled to be connected.
9. The control method according to claim 8, characterized by comprising:
when the temperature of the refrigerant medium does not reach the preset range, the flow rate of the refrigerant medium flowing from the cooling output port of the gas compressor (120) to the air cooling device (400) is adjusted through the first three-way switch (510) to adjust the temperature of the refrigerant medium.
10. A medical imaging device system according to claim 1, further comprising a drive means (610) and an expansion tank (620) connected in sequence between the cooling input of the gas compressor (120) and the second output (240).
11. A cooling control method of a medical imaging apparatus, a cooling system of the medical apparatus comprising:
a gas compressor (120), a heat exchange device (200) and a cooling device (110); the gas compressor (120) is connected with the heat exchange device (200), and the cooling device (110) is connected with the heat exchange device (200); the control method is characterized by comprising the following steps:
during a first time period, exchanging heat between the heat exchanging device (200) and the cooling device (110) with a first load;
during a second time period, exchanging heat between the heat exchange device (200) and the cooling device (110) with a second load;
and in the first time period and the second time period, enabling the heat exchange device (200) and the gas compressor (120) to exchange heat with each other at a third load.
12. The cooling control method of a medical imaging device according to claim 11, wherein when the first load is less than the third load, or the second load is less than the third load, an additional cooling means of a cooling system of a medical device is activated to cool a gas compressor (120).
13. The cooling control method of the medical imaging device as claimed in claim 12, wherein the heat exchanging device (200) and the gas compressor (120) are connected by a pipeline, the pipeline has a refrigerant medium therein, and the additional cooling device cools the pipeline or the heat exchanging device.
14. The cooling control method of the medical imaging device according to claim 13, wherein the heat exchanging device (200) and the cooling device (110) are connected by a pipe, and the pipe has a liquid or gaseous cooling medium therein; the additional cooling device is a fan or a water tank.
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| CN202010832611.8A CN112051530A (en) | 2020-08-18 | 2020-08-18 | Medical imaging apparatus system and cooling control method thereof |
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Application publication date: 20201208 |