CN109862757B - Drive pump, heat dissipation assembly and flat panel detector - Google Patents
Drive pump, heat dissipation assembly and flat panel detector Download PDFInfo
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- CN109862757B CN109862757B CN201910194238.5A CN201910194238A CN109862757B CN 109862757 B CN109862757 B CN 109862757B CN 201910194238 A CN201910194238 A CN 201910194238A CN 109862757 B CN109862757 B CN 109862757B
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Abstract
The disclosure provides a driving pump, a heat dissipation assembly and a flat panel detector, and belongs to the technical field of medical equipment. The drive pump includes a pump cylinder, a piston, a shape memory member, a first check valve and a second check valve; wherein the pump barrel has an open end; the piston is in sliding sealing fit in the pump cylinder; the shape memory part is arranged in the pump cylinder, is connected with the pump cylinder and the piston and is used for pushing the piston to slide in the pump cylinder along with the temperature change; the liquid outlet of the first check valve is connected with the open end; the liquid inlet of the second check valve is connected with the open end. The driving pump does not need external power, can drive fluid media to flow by means of heat exchange of an external environment, and can improve the heat dissipation capacity and the performance of the flat panel detector.
Description
Technical Field
The present disclosure relates to the field of medical equipment technology, and more particularly, to a drive pump, a heat dissipation assembly, and a flat panel detector.
Background
The chip of the flat panel detector consumes large power and needs to be sealed and protected by a sealed shell, so that the flat panel detector has low heat dissipation efficiency and is easy to rapidly heat up due to heat accumulation during working. The temperature rise can reduce the stability of the image acquired by the flat panel detector, and the service life and the processing speed of the chip are reduced.
The above information disclosed in the background section is only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not constitute prior art that is known to a person of ordinary skill in the art.
Disclosure of Invention
The purpose of the present disclosure is to provide a driving pump, a heat dissipation assembly and a flat panel detector, which improve the heat dissipation capability of the flat panel detector.
In order to achieve the purpose, the technical scheme adopted by the disclosure is as follows:
according to a first aspect of the present disclosure, there is provided a drive pump comprising:
a pump barrel having an open end;
a piston slidably and sealingly engaged within the pump cylinder;
the shape memory part is arranged in the pump cylinder, is connected with the pump cylinder and the piston, and is used for driving the piston to slide towards one end of the pump cylinder when the temperature is increased to be higher than the phase change temperature and driving the piston to slide towards the other end of the pump cylinder when the temperature is reduced to be lower than the phase change temperature;
a first check valve having a fluid outlet connected to the open end;
and the liquid inlet of the second check valve is connected with the open end.
In an exemplary embodiment of the disclosure, the shape memory member is configured to drive the piston toward the open end when the temperature rises above the phase transition temperature and to drive the piston away from the open end when the temperature falls below the phase transition temperature.
In an exemplary embodiment of the present disclosure, the driving pump further includes:
and the elastic element is connected with the pump cylinder and the piston and is used for applying force to the piston towards the open end, and when the temperature of the shape memory element is increased to be higher than the phase transition temperature, the force of the shape memory element on the piston is larger than the force of the elastic element on the piston.
In an exemplary embodiment of the present disclosure, the driving pump further includes:
the fixed bracket is arranged at the open end, is fixed on the pump cylinder and is provided with a medium channel for the medium to flow into or out of the pump cylinder; the shape memory member and the elastic member are connected to the fixing bracket.
According to a second aspect of the present disclosure, there is provided a heat dissipating assembly comprising:
a drive pump comprising a pump barrel, a piston, a shape memory member, a first check valve and a second check valve; wherein the pump barrel has an open end; the piston is in sliding sealing fit in the pump cylinder; the shape memory part is arranged in the pump cylinder, is connected with the pump cylinder and the piston, and is used for driving the piston to slide towards one end of the pump cylinder when the temperature is increased to be higher than the phase change temperature and driving the piston to slide towards the other end of the pump cylinder when the temperature is reduced to be lower than the phase change temperature; the liquid outlet of the first check valve is connected with the open end; the liquid inlet of the second check valve is connected with the open end;
the radiator is provided with a heat dissipation pipeline, a liquid inlet of the heat dissipation pipeline is connected with a liquid outlet of the second check valve, and a liquid outlet of the heat dissipation pipeline is connected with a liquid inlet of the first check valve.
In an exemplary embodiment of the present disclosure, the driving pump further includes:
and the elastic element is connected with the pump cylinder and the piston and is used for applying force to the piston towards the open end, and when the temperature of the shape memory element is increased to be higher than the phase transition temperature, the force of the shape memory element on the piston is larger than the force of the elastic element on the piston.
In an exemplary embodiment of the present disclosure, the driving pump further includes:
the fixed bracket is arranged at the open end, is fixed on the pump cylinder and is provided with a medium channel for the medium to flow into or out of the pump cylinder; the shape memory member and the elastic member are connected to the fixing bracket.
In an exemplary embodiment of the present disclosure, the heat dissipation assembly further includes:
and a liquid inlet of the medium container is connected with a liquid outlet of the second check valve, and a liquid outlet of the medium container is connected with a liquid inlet of the radiator.
In an exemplary embodiment of the disclosure, the medium container includes a heat absorption pipeline, a liquid inlet of the heat absorption pipeline is connected to the second check valve liquid outlet, and a liquid outlet of the heat absorption pipeline is connected to a liquid inlet of the radiator.
In an exemplary embodiment of the present disclosure, the number of the driving pumps and the number of the medium containers are each plural and are connected in a one-to-one correspondence; the liquid inlet of the first check valve of each driving pump is connected with the liquid outlet of the heat dissipation pipeline, and the liquid outlet of each medium container is connected with the liquid inlet of the heat dissipation pipeline.
In an exemplary embodiment of the present disclosure, the heat dissipation pipe is disposed to be bent in a plane.
In an exemplary embodiment of the present disclosure, the heat sink further includes:
and the heat dissipation fins are connected with the heat dissipation pipeline.
In an exemplary embodiment of the present disclosure, the heat sink further includes:
and the heat radiation fan is arranged on the heat radiation fins.
In an exemplary embodiment of the present disclosure, the heat dissipation fin has a heat dissipation cavity, and the heat dissipation fan is fixed in the heat dissipation cavity.
According to a third aspect of the present disclosure, there is provided a flat panel detector comprising:
a housing provided with an accommodating cavity;
the chip is arranged in the accommodating cavity;
the heat dissipation assembly is arranged in the accommodating cavity; the driving pump of the heat dissipation assembly is close to the chip, and the radiator of the heat dissipation assembly is far away from the chip.
In an exemplary embodiment of the present disclosure, the accommodating chamber includes a first chamber and a second chamber that are isolated from each other, and the second chamber has a heat dissipation opening;
the chip and the driving pump of the heat dissipation assembly are arranged in the first cavity, and the radiator is arranged in the second cavity.
In an exemplary embodiment of the present disclosure, when the heat dissipation assembly further includes a medium container, the medium container is provided to the first chamber.
In an exemplary embodiment of the present disclosure, the number of the heat dissipation assembly is plural.
In the drive pump provided by the present disclosure, the shape memory member may have different crystal forms when the temperature is higher or lower than the phase transition temperature, thereby exhibiting different shapes. Therefore, near the phase transition temperature, the shape memory element can respond to the temperature change to deform, and further push the piston to move back and forth along the pump cylinder. The drive pump may draw in fluid medium from the first check valve and pump it out of the second check valve by heat exchange with the outside, driving the medium fluid from the inlet of the first check valve to the outlet of the second check valve. The driving pump does not need to use external power such as electric power, air pressure or hydraulic pressure and the like, not only is the dependence on the external power avoided, but also a mechanism utilizing the external power is not needed to be arranged, so that the driving pump is simple in structure and flexible to apply. Because the external power is not required to be utilized, the driving pump avoids the vibration generated by utilizing the external power and has the characteristic of small vibration.
In the heat dissipation assembly and the flat panel detector disclosed by the invention, the driving pump can work by utilizing heat in a to-be-dissipated environment, active heat dissipation is realized, the heat dissipation efficiency is improved on the premise of not utilizing external power, and the performance of the flat panel detector is convenient to improve. Particularly, the external active heat dissipation system is difficult to be applied to the flat panel detector due to vibration because the flat panel detector cannot shake when acquiring images; the driving pump of the flat panel detector disclosed by the invention does not need to utilize external power, has the characteristics of active driving and small vibration, and can accelerate heat dissipation by utilizing an active heat dissipation mode, so that the performance is improved.
Drawings
The above and other features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.
Fig. 1 is a schematic view of a drive pump configuration according to an embodiment of the present disclosure.
Fig. 2 is an exploded schematic view of a heat dissipation assembly of an embodiment of the present disclosure.
Fig. 3 is a schematic structural view of a drive pump and a medium container of an embodiment of the present disclosure.
Fig. 4 is a schematic structural diagram of a flat panel detector according to an embodiment of the present disclosure.
Fig. 5 is an exploded schematic view of a flat panel detector according to an embodiment of the present disclosure.
Fig. 6 is an exploded schematic view of an outer frame of an embodiment of the present disclosure.
Fig. 7 is a schematic structural diagram of a heat dissipation assembly of a flat panel detector according to an embodiment of the present disclosure.
The reference numerals of the main elements in the figures are explained as follows:
100. driving the pump; 101. a pump barrel; 1011. an open end; 102. a piston; 103. a shape memory member; 104. a first check valve; 105. a second check valve; 106. an elastic member; 107. fixing a bracket; 1071. a media channel; 108. a third check valve; 200. a heat sink; 201. a heat dissipation pipeline; 2011. a connecting section; 2012. a heat dissipation section; 202. heat dissipation fins; 2021. a heat dissipation cavity; 203. a heat radiation fan; 204. a graphite sheet; 205. a fourth check valve; 300. a media container; 400. a housing; 401. a frame; 402. a front baffle; 403. a tailgate; 404. an accommodating cavity; 4041. a first cavity; 4042. a second cavity; 405. a heat dissipation opening; 406. a sealing strip; 407. a PCB board; 500. and (3) a chip.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure.
When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure. The terms "a", "an" and "the" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc. The terms "first" and "second", etc. are used merely as labels, and are not limiting on the number of their objects.
In the disclosed embodiment, there is provided a driving pump 100, as shown in fig. 1, the driving pump 100 including:
a pump barrel 101 having an open end 1011;
a piston 102 slidably and sealingly fitted in the pump cylinder 101;
the shape memory part 103 is arranged in the pump cylinder 101, is connected with the pump cylinder 101 and the piston 102, and is used for driving the piston 102 to slide towards one end of the pump cylinder 101 when the temperature is increased to be higher than the phase change temperature and driving the piston 102 to slide towards the other end of the pump cylinder 101 when the temperature is reduced to be lower than the phase change temperature;
a first check valve 104, wherein a liquid outlet of the first check valve 104 is connected with an open end 1011;
the liquid inlet of the second check valve 105 is connected with the open end 1011 of the second check valve 105.
In the drive pump 100 provided by the present disclosure, the shape memory member 103 may have different crystal forms and thus different shapes when the temperature is higher or lower than the phase transition temperature. Therefore, near the phase transition temperature, the shape memory member 103 may deform in response to the temperature change, thereby pushing the piston 102 to move along the cylinder 101. The operation of the drive pump 100 can be divided into an intake phase and a pump-out phase. In the suction phase, the fluid medium in the pump cylinder 101 exchanges heat with the outside to generate a temperature change (temperature increase or temperature decrease) in the first direction, which will act on the shape memory member 103 and cause the shape memory member 103 to generate a temperature change in the first direction. When the temperature of the shape memory member 103 changes to such a degree that deformation occurs and the deformation causes the piston 102 to slide away from the open end 1011, the pump cylinder 101 can suck in the fluid medium from the outside through the first check valve 104. In the pumping-out phase, the sucked fluid medium is mixed with the heat-exchanged fluid medium in the pump cylinder 101, so that the temperature change of the fluid medium in the pump cylinder 101 in the second direction is generated, and the temperature change in the second direction is opposite to the temperature change in the first direction. In this way, the shape memory member 103 will undergo a temperature change in the second direction, and at least a portion of the fluid medium in the cylinder 101 will be pumped out through the second shut-off valve when the temperature change is such that deformation occurs and the deformation causes the piston 102 to slide towards the open end 1011. In this manner, the drive pump 100 may draw in fluid medium from the first check valve 104 and pump out from the second check valve 105 by heat exchange with the outside, driving medium fluid from the inlet of the first check valve 104 to the outlet of the second check valve 105. The driving pump 100 does not need to use external power such as electric power, air pressure or hydraulic pressure, so that dependence on the external power is avoided, and a mechanism using the external power is not needed, so that the driving pump is simple in structure and flexible to apply. Since the external power is not required, the driving pump 100 prevents the vibration generated by the external power, and has a characteristic of small vibration.
The components of the drive pump 100 provided in the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings:
the driving pump 100 of the present disclosure may be classified into a heat-driven pump 100 and a cold-driven pump 100 according to the characteristics of the shape memory member 103 employed. In the thermally driven pump 100, the shape memory element 103 is capable of driving the piston 102 to slide away from the open end 1011 when the temperature rises above the transformation temperature and driving the piston 102 to slide closer to the open end 1011 when the temperature falls below the transformation temperature. In the chilled drive pump 100, the shape memory element 103 is capable of driving the piston 102 to slide away from the open end 1011 when the temperature drops below the transformation temperature and driving the piston 102 to slide closer to the open end 1011 when the temperature rises above the transformation temperature.
In the heat-driven pump 100, the fluid medium in the pump cylinder 101 absorbs external heat to increase the temperature in the intake stage, and the fluid medium having the increased temperature heats the shape memory member 103. When the temperature of the shape memory element 103 rises above the phase transition temperature, the shape memory element 103 changes its crystal form and deforms, pushing the piston 102 to slide in a direction away from the open end 1011, so that the pressure between the piston 102 and the open end 1011 in the pump cylinder 101 is reduced, and a fluid medium can be sucked in from the outside through the first check valve 104. During the pumping phase, the fluid medium flowing in from the first check valve 104 has a lower temperature, so that the temperature of the fluid medium in the pump cylinder 101 is lower than the phase transition temperature of the shape memory member 103. Thus, when the shape memory element 103 is cooled to a temperature lower than the transformation temperature, the crystal form thereof changes and deforms, thereby pushing the piston 102 to slide in a direction close to the open end 1011, so that at least a portion of the fluid medium between the piston 102 and the open end 1011 in the pump cylinder 101 flows out through the second check valve 105. In this manner, the thermally driven pump 100 draws fluid medium from the first check valve 104 and pumps it out of the second check valve 105 using an externally high temperature (i.e., by being heated), driving the medium fluid from the inlet of the first check valve 104 to the outlet of the second check valve 105.
Similarly, in the cooling drive pump 100, the fluid medium in the pump cylinder 101 is cooled by dissipating heat to the outside environment during the suction phase, and the cooled fluid medium cools the shape memory element 103. When the temperature of the shape memory element 103 is reduced to be lower than the phase transition temperature, the crystal form of the shape memory element 103 changes and deforms, and the piston 102 is pushed to slide in the direction away from the open end 1011, so that the pressure between the piston 102 and the open end 1011 in the pump cylinder 101 is reduced, and the fluid medium can be sucked from the outside through the first check valve 104. During the pumping phase, the fluid medium flowing in from the first check valve 104 has a higher temperature, so that the temperature of the fluid medium in the pump cylinder 101 is higher than the phase transition temperature of the shape memory member 103. Thus, when the shape memory element 103 is heated to a temperature higher than the transformation temperature, the crystal form thereof changes and deforms, pushing the piston 102 to slide in a direction close to the open end 1011, so that at least a portion of the fluid medium between the piston 102 and the open end 1011 in the pump cylinder 101 flows out through the second check valve 105. In this manner, the chilled drive pump 100 draws fluid medium from the first check valve 104 and pumps it out of the second check valve 105 using external low temperatures (i.e., by being cooled), driving the medium fluid from the inlet port of the first check valve 104 to the outlet port of the second check valve 105.
The pump barrel 101 may be made of a material with good thermal conductivity to ensure that the pump barrel 101 has good thermal conductivity, so as to improve the heat exchange efficiency between the fluid medium in the pump barrel 101 and the outside. In one embodiment, the pump cylinder 101 may be made of a metal material such as copper, aluminum, or a titanium alloy.
In order to further increase the heat exchange efficiency between the fluid medium in the pump cylinder 101 and the outside, the cylinder wall of the pump cylinder 101 may have a smaller thickness. For example, as shown in fig. 1, a metal pipe may be used as the pump cylinder 101.
The plunger 102 is adapted to mate with the barrel 101 and is shaped and dimensioned to fit within the interior cavity of the barrel 101. The material of the piston 102 may be rubber material, plastic material or other material to enable a sealing and slidable connection with the wall of the pump cylinder 101. In one embodiment, the piston 102 is a rubber block.
The shape memory element 103 is made of Shape Memory Alloy (SMA). The shape memory element 103 can be made of a shape memory alloy selected according to the phase transition temperature requirement of the driving pump 100.
The shape memory member 103 may be cylindrical, bar, spiral, sheet, or other shape. For example, as shown in fig. 1, in one embodiment, the shape memory member 103 may be prepared in the shape of a spring.
As shown in FIG. 1, the shape memory member 103 can be disposed in the cylinder 101 on the side of the piston 102 near the open end 1011, such that the shape memory member 103 can be immersed in the fluid medium, thereby improving the heat exchange efficiency between the fluid medium and the shape memory member 103.
In one embodiment, as shown in fig. 1, the driving pump 100 may further include a fixing bracket 107, the fixing bracket 107 being provided at the open end 1011 and fixed to the pump barrel 101, having a medium passage 1071 for a medium to flow into or out of the pump barrel 101; the shape memory member 103 is connected to a fixing bracket 107.
The fixing bracket 107 may have a net shape, a ring shape, a perforated polygon shape, or other shapes, which are not particularly limited in the present disclosure.
In one embodiment, as shown in fig. 1, the actuation pump 100 further comprises an elastic member 106, the elastic member 106 connecting the cylinder 101 and the piston 102 for applying a force to the piston 102 toward the open end 1011. In this manner, the piston 102 that drives the pump 100 is more easily restored to the side near the open end 1011, increasing the speed at which the pump 100 is driven in response to the fluid medium drawn in from the first check valve 104, reducing the risk of the piston 102 stopping at a position away from the open end 1011.
If the drive pump 100 is a thermally driven pump 100, when the temperature of the shape memory member 103 rises above the transformation temperature, the force of the shape memory member 103 on the piston 102 is greater than the force of the elastic member 106 on the piston 102, so as to ensure that the piston 102 can move from a position near the open end 1011 to a position away from the open end 1011.
If the drive pump 100 is a cold drive pump 100, when the temperature of the shape memory member 103 is lowered to below the transformation temperature, the force of the shape memory member 103 on the piston 102 is greater than the force of the elastic member 106 on the piston 102, so as to ensure that the piston 102 can move from a position near the open end 1011 to a position far from the open end 1011.
The elastic member 106 may be disposed on a side of the piston 102 close to the open end 1011, or disposed on a side of the piston 102 away from the open end 1011, which is not limited in this disclosure. In one embodiment, as shown in FIG. 1, the resilient member 106 connects the fixed bracket 107 and the piston 102.
The elastic member 106 may be a spring, an elastic sheet or other elastic components, which is not limited in this disclosure.
The present disclosure also provides a heat dissipation assembly, as shown in fig. 2, the heat dissipation assembly includes:
a drive pump 100, the drive pump 100 including a pump cylinder 101, a piston 102, a shape memory member 103, a first check valve 104, and a second check valve 105; wherein the pump barrel 101 has an open end 1011; the piston 102 is slidably and sealingly fitted in the pump cylinder 101; the shape memory element 103 is arranged in the pump cylinder 101, is connected with the pump cylinder 101 and the piston 102, and is used for driving the piston 102 to slide towards one end of the pump cylinder 101 when the temperature is increased to be higher than the phase change temperature and driving the piston 102 to slide towards the other end of the pump cylinder 101 when the temperature is reduced to be lower than the phase change temperature; the liquid outlet of the first check valve 104 is connected to the open end 1011; the liquid inlet of the second check valve 105 is connected with the open end 1011;
the radiator 200 is provided with a radiating pipeline 201, a liquid inlet of the radiating pipeline 201 is connected with a liquid outlet of the second check valve 105, and a liquid outlet of the radiating pipeline 201 is connected with a liquid inlet of the first check valve 104.
In this heat dissipating assembly, the drive pump 100 is a heat-receiving drive pump 100 as described in the above-described embodiment of the drive pump 100. The fluid medium absorbs heat and rises temperature in the pump cylinder 101, and is pumped out from the second check valve 105 by the driving pump 100, so that the fluid medium absorbing heat and rising temperature enters the heat dissipation pipeline 201 to dissipate heat; the fluid medium after heat dissipation and temperature reduction can be sucked by the drive pump 100 through the first check valve 104, and then heat absorption and temperature rise can be performed in the pump cylinder 101. In this way, the fluid medium absorbs heat around the drive pump 100 and dissipates the heat through the radiator 200, thereby dissipating heat around the drive pump 100. The heat dissipation assembly can utilize heat in an environment to be dissipated (an environment where the driving pump 100 is located) to drive the fluid medium to perform active heat dissipation, and improves heat dissipation efficiency on the premise of not using external power. The driving pump 100 of the heat dissipation assembly is the heated driving pump 100 in the above embodiment of the driving pump 100, and therefore, the same beneficial effects are obtained, and the details of the disclosure are not repeated.
It is to be understood that the drive pump 100 in the heat sink assembly may be any of the heat-driven pumps 100 described in the embodiments of the drive pump 100 above.
For example, in one embodiment, as shown in fig. 3, the driving pump 100 of the heat dissipation assembly may further include an elastic member 106, the elastic member 106 is connected to the pump cylinder 101 and the piston 102, and is used for applying a force to the piston 102 toward the open end 1011, and when the temperature of the shape memory member 103 rises above the phase transition temperature, the force of the shape memory member 103 to the piston 102 is greater than the force of the elastic member 106 to the piston 102.
For another example, in an embodiment, as shown in fig. 3, the driving pump 100 of the heat dissipation assembly may further include a fixing bracket 107, the fixing bracket 107 is disposed at the open end 1011 and fixed to the pump barrel 101, and has a medium passage for flowing a medium into or out of the pump barrel 101; the shape memory member 103 and the elastic member 106 are connected to a fixing bracket 107.
As shown in fig. 3, the heat sink assembly may further include a medium container 300, a liquid inlet of the medium container 300 is connected to a liquid outlet of the second check valve 105, and a liquid outlet of the medium container 300 is connected to a liquid inlet of the heat sink 200.
In operation of the heat sink assembly, the dynamic pump and the media container 300 may both be disposed in an environment to be dissipated. The fluid medium pumped by the driving pump 100 in the pumping stage has a temperature lower than the phase transition temperature of the shape memory member 103, and the fluid medium can continue to heat exchange with the environment to be cooled in the medium container 300 to further raise the temperature, so that the final temperature is not limited by the shape memory member 103. Thus, the fluid medium can be heated to a higher temperature and then enter the radiator 200 for heat radiation, and the efficiency of the heat radiation assembly for absorbing heat in the environment to be radiated is improved.
The medium container 300 is used for accommodating the fluid medium pumped from the driving pump 100 and enabling the fluid medium therein to exchange heat with the environment to be radiated. The shape and material of the medium container 300 are subject to ensure that the medium container 300 has a good heat exchange capacity, and the present disclosure is not limited thereto. In one embodiment, as shown in fig. 3, the medium container 300 may be a heat absorption circuit, a liquid inlet of the heat absorption circuit is connected to a liquid outlet of the second check valve 105, and a liquid outlet of the heat absorption circuit is connected to a liquid inlet of the heat sink 200. The heat absorption pipeline has a large specific surface area, and can effectively improve the heat exchange speed between the fluid medium in the medium container 300 and the environment to be radiated. The heat absorption pipeline can be made of metal such as copper, aluminum, stainless steel and the like or other materials with good heat conduction.
In one embodiment, the cylinder 101 of the driving pump 100 and the medium container 300 are both metal pipes, wherein the end of the cylinder 101 of the driving pump 100 away from the open end 1011 can also be connected with the heat dissipation pipe 201, so that the relative position between the cylinder 101 and the medium container 300 is more stable. In order to prevent the fluid medium from flowing into the cylinder 101 from the heat dissipation pipe 201, a barrier may be disposed at an end of the cylinder 101 of the actuation pump 100 away from the open end 1011, and the barrier may seal an end of the cylinder 101 of the actuation pump 100 away from the open end 1011. Of course, as shown in fig. 3, a third check valve 108 may be disposed at an end of the cylinder 101 of the driving pump 100 away from the open end 1011, an inlet of the third check valve 108 is connected to the end of the cylinder 101 of the driving pump 100 away from the open end 1011, and an outlet of the third check valve 108 is connected to an inlet of the heat dissipation pipeline 201. In another embodiment, as shown in fig. 3, a fourth check valve 205 may be further disposed between the outlet of the medium container 300 and the heat dissipation pipeline 201, wherein an inlet of the fourth check valve 205 is connected to the outlet of the medium container 300, and an outlet of the fourth check valve 205 is connected to the inlet of the heat dissipation pipeline 201.
As shown in fig. 3, the number of the driving pumps 100 and the medium containers 300 may be each plural and connected in one-to-one correspondence. A liquid inlet of the first check valve 104 of each driving pump 100 is connected with a liquid outlet of the heat dissipation pipeline 201, and a liquid outlet of the second check valve 105 of each driving pump 100 is connected with a liquid inlet of the corresponding medium container 300; the liquid outlet of each medium container 300 is connected with the liquid inlet of the heat dissipation pipeline 201.
Thus, the volumes of the driving pump 100 and the medium containers 300 can be smaller and the number of the driving pump 100 and the medium containers 300 can be more, the specific surface areas of the driving pump 100 and the medium containers 300 are increased, the heat absorption efficiency can be improved, and the heat dissipation efficiency of the heat dissipation assembly is further improved. In one embodiment, as shown in fig. 3, the drive pump 100 and the corresponding media container 300 form an endothermic drive unit, and a plurality of endothermic drive units are arranged side by side in a row.
The heat dissipation pipe 201 may be bent in a plane, so as to increase the length of the heat dissipation pipe 201 in a limited plane range, thereby improving the heat dissipation effect of the heat dissipation pipe 201. In one embodiment, the heat dissipation pipe 201 may be a heat dissipation metal pipe.
In one embodiment, as shown in fig. 2, the heat dissipation pipeline 201 may include a first section and a second section arranged side by side, wherein the liquid inlet of the first section is connected to the liquid outlet of the medium container 300, the liquid outlet of the first section is connected to the liquid inlet of the second section, and the liquid outlet of the second section is connected to the liquid inlet of the first check valve 104. Wherein, because first section and second section set up side by side, consequently can all set up according to predetermineeing the orbit. In a further aspect, as shown in fig. 2, each of the first segment and the second segment includes a connection segment 2011 and a heat dissipation segment 2012, wherein the connection segment 2011 is connected to the driving pump 100/the medium container 300, the heat dissipation segment 2012 is connected to the connection segment 2011, and the heat dissipation segment 2012 is disposed in a spiral shape or a zigzag shape.
As shown in fig. 2, the heat sink 200 may further include heat dissipation fins 202, and the heat dissipation fins 202 are connected to the heat dissipation pipe 201. The fluid medium in the heat dissipation pipe 201 can dissipate heat through the heat dissipation fins 202, thereby improving the heat dissipation efficiency of the heat dissipation assembly. In one embodiment, the heat sink fins 202 are connected to the heat sink segment 2012 of the heat sink conduit 201.
The heat dissipation fins 202 and the heat dissipation pipe 201 can be connected in various ways, such as clamping, bonding, binding, welding or other ways. In one embodiment, as shown in fig. 2, the heat dissipation fins 202 may be connected by a graphite sheet 204 with double-sided adhesive, one side of the graphite sheet 204 is adhered to the heat dissipation pipe 201, and the other side is adhered to the heat dissipation fins 202. The adhesive disposed on the two sides of the graphite sheet 204 may be heat conductive silicone grease.
As shown in fig. 2, the heat sink 200 may further include a heat dissipation fan 203, and the heat dissipation fan 203 is disposed on the heat dissipation fins 202. Thus, the heat dissipation from the heat dissipation fins 202 can be accelerated by the airflow generated by the heat dissipation fan 203, thereby improving the heat dissipation effect of the heat dissipation assembly.
In one embodiment, as shown in fig. 2, the heat sink fin 202 may have a heat sink cavity 2021, and the heat sink fan 203 is fixed in the heat sink cavity 2021.
The present disclosure also provides a flat panel detector for use in an X-ray detection system. As shown in fig. 4 and 7, the flat panel detector includes a housing 400, a chip 500, and any of the heat dissipation assemblies described in the above embodiments of the heat dissipation assembly. Wherein, the housing 400 is provided with a receiving cavity 404; the chip 500 is arranged in the accommodating cavity 404; the heat dissipation assembly is arranged in the accommodating cavity 404; the driving pump 100 of the heat dissipating module is disposed close to the chip 500, and the heat sink 200 of the heat dissipating module is disposed far from the chip 500.
The flat panel detector disclosed by the invention can conduct heat emitted by the chip 500 to a position far away from the chip 500, avoid the heat from accumulating at the position of the chip 500 to generate high temperature, and can improve the performance of the chip 500, thereby improving the performance of the flat panel detector. The heat dissipation assembly of the flat panel detector of the present disclosure is the heat dissipation assembly described in the above embodiments of the heat dissipation assembly, and therefore has the same beneficial effects. Particularly, the external active heat dissipation system is difficult to be applied to the flat panel detector due to vibration because the flat panel detector cannot shake when acquiring images; the driving pump 100 of the flat panel detector disclosed by the invention does not need to use external power, has the characteristics of active driving and small vibration, and can accelerate heat dissipation by using an active heat dissipation mode, so that the performance is improved.
As shown in fig. 5, the housing 400 may include a frame 401, a front panel 402, and a rear panel 403, wherein the frame 401 has a first opening on a first side and a second opening on a second side, and the front panel 402 and the rear panel 403 cover the first opening and the second opening, respectively, such that a receiving cavity 404 is formed between the frame 401, the front panel 402, and the rear panel 403. In order to improve the heat dissipation performance of the flat panel detector, the material of the frame 401 may be a metal material, for example, copper, aluminum, or an aluminum alloy. The housing 400 needs to be sealed to protect the chips disposed therein. In one embodiment, a sealing strip 406 may be disposed between the bezel 401 and the front baffle 402. In another embodiment, the bezel 401 and the tailgate 403 may be provided with a seal 406.
In one embodiment, as shown in fig. 5, a PCB 407 may be connected to the frame 401, and the PCB 407 is disposed in the accommodating cavity 404 and is used for mounting the chip 500.
In one embodiment, as shown in fig. 6, the receiving cavity 404 may include a first cavity 4041 and a second cavity 4042 isolated from each other, and the second cavity 4042 has a heat dissipating opening 405; the chip 500 and the driving pump 100 of the heat dissipation assembly are disposed in the first cavity 4041, and the heat sink 200 is disposed in the second cavity 4042. The chip 500 and the like can be disposed in the first cavity 4041 for sealing protection, and heat generated by the chip 500 in the first cavity 4041 can be conducted to the second cavity 4042 through the heat dissipation component; the second cavity 4042 has the heat dissipation opening 405, and heat dissipation can be achieved in a convection manner, so that the heat dissipation effect of the flat panel detector is further improved. Thus, on the premise of protecting the chip 500 in a sealing manner, the purpose of accelerating heat dissipation by convection is achieved.
In one embodiment, as shown in fig. 6, the heat dissipation opening 405 is disposed on the frame 401, and enables the external space of the flat panel detector to communicate with the second cavity 4042.
In one embodiment, as shown in fig. 4, the heat dissipating section 2012 of the heat dissipating pipe 201 of the heat sink 200 is disposed in the second cavity 4042, and the connecting section 2011 of the heat dissipating pipe 201 of the heat sink 200 may be partially or completely disposed in the first cavity 4041.
The driving pump 100 of the heat dissipation assembly may have a certain gap with the chip 500, may be connected to the chip 500 through a heat conductive part, or may be connected to the chip 500 in direct contact, which is not limited in this disclosure. For example, in one embodiment, the driving pump 100 and the chip 500 may be connected by a heat-conductive silicone adhesive tape.
When the heat dissipation assembly further includes the media container 300, as shown in fig. 3, the media container 300 is provided in the first chamber. Thus, the fluid medium in the medium container 300 can further absorb the heat generated by the chip 500, and the heat dissipation performance of the flat panel detector is improved.
The medium container 300 of the heat dissipation assembly may be connected to the chip 500 with a certain gap therebetween, may be connected to the chip 500 through a heat conductive member, or may be connected to the chip 500 in direct contact therewith, which is not limited in this disclosure. For example, in one embodiment, the medium container 300 and the chip 500 may be connected by a heat-conductive silicone adhesive tape.
In the flat panel detector, the number of the heat dissipation assemblies can be multiple, so that the heat dissipation performance of the flat panel detector is further improved. For example, in an embodiment, as shown in fig. 4, the number of the heat dissipation assemblies may be two, and the two heat dissipation assemblies may be symmetrically disposed in the accommodating cavity 404.
It is to be understood that the disclosure is not limited in its application to the details of construction and the arrangements of the components set forth in the specification. The present disclosure is capable of other embodiments and of being practiced and carried out in various ways. The foregoing variations and modifications are within the scope of the present disclosure. It should be understood that the disclosure disclosed and defined in this specification extends to all alternative combinations of two or more of the individual features mentioned or evident from the text and/or drawings. All of these different combinations constitute various alternative aspects of the present disclosure. The embodiments described in this specification illustrate the best mode known for carrying out the disclosure and will enable those skilled in the art to utilize the disclosure.
Claims (9)
1. A flat panel detector, characterized in that the flat panel detector is used in an X-ray detection system; the flat panel detector comprises a shell, a chip and a heat dissipation assembly; the shell is provided with an accommodating cavity; the chip is arranged in the accommodating cavity; the heat dissipation assembly is arranged in the accommodating cavity;
the heat dissipation assembly includes:
a plurality of actuation pumps, any of which includes a pump cylinder, a piston, a shape memory member, an elastic member, a first check valve, and a second check valve; wherein the pump barrel has an open end; the piston is in sliding sealing fit in the pump cylinder; the shape memory piece is arranged in the pump cylinder and is connected with the pump cylinder and the piston; the shape memory element is used for driving the piston to be far away from the open end when the temperature is increased to be higher than the phase transition temperature, and driving the piston to be close to the open end when the temperature is reduced to be lower than the phase transition temperature; the liquid outlet of the first check valve is connected with the open end; the liquid inlet of the second check valve is connected with the open end; an elastic member connecting the cylinder and the piston for applying a force to the piston toward the open end, and when the temperature of the shape memory member rises above the phase transition temperature, the force of the shape memory member on the piston is greater than the force of the elastic member on the piston;
the radiator is provided with a radiating pipeline, a liquid inlet of the radiating pipeline is connected with a liquid outlet of the second check valve, and a liquid outlet of the radiating pipeline is connected with a liquid inlet of the first check valve;
a plurality of medium containers connected in one-to-one correspondence with the plurality of drive pumps; the liquid outlet of the second check valve of each driving pump is connected with the corresponding liquid inlet of the medium container; the liquid outlet of each medium container is connected with the liquid inlet of the heat dissipation pipeline;
the driving pump of the heat dissipation assembly is arranged close to the chip, and the radiator of the heat dissipation assembly is arranged far away from the chip; the drive pump and the corresponding medium container form an endothermic drive unit, and a plurality of endothermic drive units are arranged in a row side by side; the driving pump is connected with the chip through a heat-conducting silicon rubber strip; the medium container is connected with the chip through a heat-conducting silicon adhesive tape.
2. The flat panel detector according to claim 1, wherein the drive pump further comprises:
the fixed bracket is arranged at the open end, is fixed on the pump cylinder and is provided with a medium channel for the medium to flow into or out of the pump cylinder; the shape memory member and the elastic member are connected to the fixing bracket.
3. The flat panel detector according to claim 1, wherein the medium container comprises an absorption circuit, an inlet of the absorption circuit is connected to the second check valve outlet, and an outlet of the absorption circuit is connected to an inlet of the heat sink.
4. The flat panel detector according to claim 1, wherein the heat dissipation pipe is bent in a plane.
5. The flat panel detector of claim 4, wherein the heat sink further comprises:
and the heat dissipation fins are connected with the heat dissipation pipeline.
6. The flat panel detector of claim 5, wherein the heat sink further comprises:
and the heat radiation fan is arranged on the heat radiation fins.
7. The flat panel detector according to claim 6, wherein the heat dissipation fins have heat dissipation cavities, and the heat dissipation fan is fixed in the heat dissipation cavities.
8. The flat panel detector according to any one of claims 1 to 7, wherein the accommodating cavity comprises a first cavity and a second cavity which are isolated from each other, and the second cavity has a heat dissipation opening;
the chip and the driving pump of the heat dissipation assembly are arranged in the first cavity, and the radiator is arranged in the second cavity; the media container is disposed in the first chamber.
9. The flat panel detector according to any one of claims 1 to 7, wherein the number of the heat dissipation assemblies is plural.
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| CN201910194238.5A CN109862757B (en) | 2019-03-14 | 2019-03-14 | Drive pump, heat dissipation assembly and flat panel detector |
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| CN201910194238.5A CN109862757B (en) | 2019-03-14 | 2019-03-14 | Drive pump, heat dissipation assembly and flat panel detector |
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| CN109862757B true CN109862757B (en) | 2021-01-26 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202646892U (en) * | 2012-05-22 | 2013-01-02 | 天津大学 | Vertically-arranged bathroom temperature controlling valve driven by shape memory alloy |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2591667Y (en) * | 2002-10-22 | 2003-12-10 | 罗云 | Computer cooler |
| CN1941215A (en) * | 2005-09-30 | 2007-04-04 | 刘温 | Miniature silent liquid-cooling system |
| CN201001245Y (en) * | 2007-01-31 | 2008-01-02 | 李森墉 | Combination type heat converter |
| CN101312637A (en) * | 2007-05-24 | 2008-11-26 | 讯凯国际股份有限公司 | Water-cooling heat radiating system |
| US20100254758A1 (en) * | 2009-04-06 | 2010-10-07 | International Business Machines Corporation | Apparatus and method for forming a mechanical, fluid-tight connection |
| CN203376678U (en) * | 2013-05-02 | 2014-01-01 | 山东科技大学 | A built-in water cooling heat sink for a notebook computer |
| US9927041B2 (en) * | 2014-08-29 | 2018-03-27 | A. Raymond Et Cie | Fluid control valve utilizing shape memory alloy driving spring |
| CN105674780B (en) * | 2016-04-06 | 2017-12-15 | 中国科学院工程热物理研究所 | A kind of antigravity heat pipe |
| CN108953746B (en) * | 2018-08-29 | 2023-12-05 | 重庆康格生物科技有限公司 | Shape memory alloy driven temperature control water valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202646892U (en) * | 2012-05-22 | 2013-01-02 | 天津大学 | Vertically-arranged bathroom temperature controlling valve driven by shape memory alloy |
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