CN106973550B - Open type controllable flow phase-change cooling system and control method thereof - Google Patents
Open type controllable flow phase-change cooling system and control method thereof Download PDFInfo
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- CN106973550B CN106973550B CN201710233695.1A CN201710233695A CN106973550B CN 106973550 B CN106973550 B CN 106973550B CN 201710233695 A CN201710233695 A CN 201710233695A CN 106973550 B CN106973550 B CN 106973550B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20327—Accessories for moving fluid, for connecting fluid conduits, for distributing fluid or for preventing leakage, e.g. pumps, tanks or manifolds
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20381—Thermal management, e.g. evaporation control
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
- H05K7/20509—Multiple-component heat spreaders; Multi-component heat-conducting support plates; Multi-component non-closed heat-conducting structures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention provides an open type controllable flow phase change cooling system and a control method thereof. Compared with the traditional liquid cooling circulation cooling system, the phase-change cooling system can rapidly and stably cool electronic devices with high heat flux density, can meet different cooling temperature uniformity requirements by adjusting the flow of the cooling working medium, and has better stability and usability.
Description
Technical Field
The invention relates to the technical field of electronic device cooling, in particular to an open type controllable flow phase-change cooling system and a control method thereof.
Background
With the continuous development of aerospace technology, the types and applications of aircrafts are increasingly wide, and more high-power electronic devices are contained in the aircrafts, wherein the heat dissipation problem of the high-power high-heat-flux electronic devices is also more and more prominent. When a high-power electronic device works, the generated heat can raise the local temperature, if the heat dissipation is not timely, the temperature of the corresponding device can be raised or even exceed the allowable highest temperature, the performance of the electronic device can be obviously reduced, and the electronic device can not work stably, so that the performance of the electronic device is deteriorated or even fails.
Most of electrons on a spacecraft belong to precise instruments, work at a fixed temperature to exert the maximum effect, and larger temperature fluctuation is not allowed, so that great requirements are also provided for the temperature uniformity of the same space. In addition, the design structure of the spacecraft is compact, special requirements are also provided for the space and the weight of a cooling system configured by the spacecraft in order to increase the sailing distance, and the development trend is that the spacecraft adopts a smaller and lighter cooling system.
The existing spacecraft needs to do various overturning actions, and has extremely high requirements on the stability and usability of a heat dissipation cooling system. Because the traditional mechanical cooling system needs to use various mechanical components and valves, the failure rate of the traditional mechanical cooling system can be increased when the spacecraft turns over; and because some traditional cooling systems require forced convection circulation of air and the requirements of the electronic device placement environment on air cleanliness are also high, the traditional cooling mode can not meet the requirements of stability and usability.
Disclosure of Invention
The present invention provides an open-type controllable flow phase-change cooling system and a control method thereof, which overcome or at least partially solve the above problems, and solve the defects of insufficient stability and usability of the conventional cooling system.
According to one technical scheme of the invention, an open type controllable flow phase change cooling system is provided, and comprises a cold storage liquid storage tank, a throttling device, a contact cooling plate, a self-priming pump and a controller, wherein a temperature sensor is arranged on the contact cooling plate, the cold storage liquid storage tank, the throttling device, the contact cooling plate and the self-priming pump are sequentially connected in series through pipelines, and the controller is respectively connected with the heating and pressurizing device, the throttling device, the temperature sensor and the self-priming pump through data transmission lines. When the uniformity of the plate surface temperature of the contact cooling plate does not meet the set requirement, the self-sucking pump is used for forming a negative pressure environment at the outlet of the contact cooling plate so as to improve the flow of cooling working medium in the pipeline and enable the temperature of the contact cooling plate to reach the set requirement.
As a further improvement of the technical scheme, the cold accumulation liquid storage tank is provided with a heating and pressurizing device for adjusting the internal pressure of the cold accumulation liquid storage tank. The heating power of the heating and pressurizing device can be changed according to the temperature signal received by the controller from the temperature sensor on the contact cooling plate, so that the internal pressure of the cold accumulation liquid storage tank can be regulated, and the liquid flow in the pipeline channel can be properly increased or reduced. And only when the temperature uniformity on the contact cooling plate does not meet the requirement, the heating and pressurizing device is started to heat so as to regulate the liquid flow in the pipeline channel.
As a further improvement of the technical scheme, the heating and pressurizing device is positioned at the lower half part of the inner part of the tank body of the cold accumulation liquid storage tank.
As a further improvement of the above technical solution, the heating and pressurizing device is a heating rod or a heating belt. When the heating and pressurizing device is a heating rod, the heating rod can be horizontally arranged in the tank body, and when the heating and pressurizing device is a heating belt, the heating belt can be circumferentially arranged on the lower half surface of the tank body.
As a further improvement scheme of the technical scheme, the cold accumulation liquid storage tank is provided with a liquid injection port and a liquid injection valve for controlling the opening and closing states of the liquid injection port. When cooling working medium is required to be added into the cold accumulation liquid storage tank, the liquid injection valve on the liquid injection port is opened, the liquid injection port of the cold accumulation liquid storage tank can be connected to a vacuumizing machine and the cooling working medium tank through a fluorine adding meter, a vacuum environment is created in advance through the vacuumizing machine, then the vacuumizing environment is closed, and the cooling working medium can be added into the cold accumulation liquid storage tank under a negative pressure environment. And after filling, the liquid injection valve is in a normally closed state.
As a further improvement of the above technical solution, the throttling device is a throttling device with a variable throttling area. The throttling area of the throttling device is changed so as to regulate and control the superheat degree of the cooling working medium in the contact cooling plate, and the condition that the cooling working medium is evaporated to dryness and only has sensible heat in the latter half area of the channel in the contact cooling plate is prevented.
As a further improvement of the above technical solution, the throttling device adopts a thermal expansion valve or an electronic expansion valve.
As a further development of the above-mentioned solution, the internal channel manifold of the contact cooling plate corresponds to the arrangement of the heat-generating electrons. According to different heat dissipation requirements of electronic devices, the internal channel form of the contact cooling plate is arranged, and when the contact cooling plate is used, heating electrons are correspondingly arranged on the contact cooling plate, so that contact thermal resistance can be reduced by smearing heat conduction silicone grease or indium pads and the like.
As a further improvement scheme of the technical scheme, the self-priming pump is a variable-frequency self-priming pump, and is preferably a miniature variable-frequency self-priming pump.
When the cooling system works, and when the adjustment of the throttling device and the heating and pressurizing device can not meet the flow requirement, the self-sucking pump is required to be started, so that the channel outlet of the contact cooling plate forms a negative pressure environment, and the purpose of adjusting the flow is achieved; under the mode of one tank of multipath, the variable-frequency self-priming pump can be adjusted according to the cooling temperature uniformity requirements of different electrons so as to meet the requirement of flow adjustment.
The controller receives temperature signals from the temperature sensor and controls the heating and pressurizing device, the throttling device and the self-priming pump through the control branch respectively.
Based on the technical scheme, the novel open unpowered controllable flow phase-change cooling system provided by the invention has the advantages that the cooling working medium is subjected to phase change in the contact cooling plate, the heat exchange coefficient is high, the proper cooling temperature and cooling uniformity can be provided, and the high-efficiency stable operation of the high-power electronic device on the aircraft can be realized. Compared with the traditional liquid cooling circulation cooling system, the phase change cooling system can rapidly and stably cool electronic devices with high heat flux, can meet different cooling temperature uniformity requirements by adjusting the flow of cooling working medium, and has better stability and usability.
According to another aspect of the present invention, there is provided a control method of an open type flow-controllable phase-change cooling system, the method comprising:
detecting a temperature signal of the contact cooling plate through a temperature sensor;
the controller receives the temperature signal of the temperature sensor and adjusts the flow of the cooling system by controlling the throttling device, the heating and pressurizing device or the self-sucking pump, so that the temperature of the contact cooling plate is controlled within the set requirement.
As a further improvement of the above technical solution, the controller adjusts the flow rate of the cooling system by controlling the throttling device, specifically: when the temperature sensor detects that the temperature of the contact cooling plate is higher than the temperature set by the controller, the temperature sensor transmits a detection signal to the controller through a feedback branch of the temperature sensor, the controller receives the signal and controls the branch to open the throttling device through the throttling device, so that cooling working medium in the cold storage liquid storage tank enters the contact cooling plate through a pipeline, phase change occurs in the contact cooling plate to take away heat, and the temperature of the contact cooling plate is controlled within a set requirement.
As a further improvement of the above technical solution, the controller adjusts the flow rate of the cooling system by controlling the heating and pressurizing device or the self-priming pump, specifically: when the temperature sensor detects that the uniformity of the plate surface temperature of the contact cooling plate does not meet the requirement, namely the phenomenon that the local cooling working medium in the contact cooling plate evaporates, the temperature sensor transmits a detection signal to the controller through a feedback branch of the temperature sensor, the controller receives the signal and starts a heating and pressurizing device through a heating and pressurizing control branch, and the pressure in the cold storage liquid tank is properly increased and maintained, so that the flow of the cooling working medium in a pipeline is improved; if the uniformity of the plate surface temperature of the contact cooling plate detected by the temperature sensor again still does not meet the set requirement, the self-priming pump is started through the self-priming pump control branch, a negative pressure environment is formed at the outlet of the contact cooling plate, so that the flow of cooling working medium in the pipeline is increased again, and the temperature of the contact cooling plate reaches the set requirement.
The cold accumulation liquid storage tanks with different sizes can be configured according to different cold energy requirements of the contact cooling plates.
The cold accumulation liquid storage tank can supply multiple paths of contact cooling plates, and the temperature of different contact cooling plates can be regulated by controlling the self-priming pump of each branch according to the temperature uniformity requirements of different contact cooling plates so as to meet different setting requirements.
Based on the technical scheme, the control method of the open unpowered controllable flow phase-change cooling system comprises a single-path and multi-path open unpowered controllable flow phase-change cooling system mode, and a controller in the multi-path open unpowered controllable flow phase-change cooling system can control and adjust the rotating speed of a self-priming pump through corresponding self-priming pump control branches according to the temperature uniformity requirements of different branch contact cooling plates, so that different setting requirements are achieved. The cooling working medium of the cooling system is subjected to phase change in the contact cooling plate, so that the heat exchange coefficient is high, proper cooling temperature and cooling uniformity can be provided, and high-efficiency and stable operation of the high-power electronic device on the aircraft can be realized. Compared with the traditional liquid cooling circulation cooling system, the invention can rapidly and stably cool the electronic device with high heat flux, can meet different cooling temperature uniformity requirements by adjusting the flow of the cooling working medium, and has better stability and usability.
Drawings
FIG. 1 is a schematic diagram of a single-pass open-type controllable flow phase-change cooling system according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a multiple open type controllable flow phase change cooling system according to an embodiment of the present invention.
In the figure, 1, a heating and pressurizing device; 2. cold accumulation liquid storage tank; 3. a liquid injection port; 4. a liquid injection valve; 5. a throttle device; 6. a contact cooling plate; 7. a temperature sensor; 8. a self priming pump; 9. a controller; 10. a self priming pump control branch; 11. a temperature sensor feedback branch; 12. a throttle device control branch; 13. the heating and pressurizing device controls the branch.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by one of ordinary skill in the art without any inventive effort, are within the scope of the present invention based on the embodiments and any combination thereof.
In one embodiment according to the present invention, as shown in fig. 1, an open type phase-change cooling system with controllable flow comprises a cold accumulation liquid storage tank 2, a throttling device 5, a contact cooling plate 6, a self-priming pump 8 and a controller 9, wherein a temperature sensor 7 is arranged on the contact cooling plate 6, the cold accumulation liquid storage tank 2, the throttling device 5, the contact cooling plate 6 and the self-priming pump 8 are sequentially connected in series through pipelines, and the controller 9 is respectively connected with the heating and pressurizing device 1, the throttling device 5, the temperature sensor 7 and the self-priming pump 8 through data transmission lines.
In one embodiment according to the invention, the cold storage tank 2 is provided with a heating and pressurizing device 1 that regulates the internal pressure of the cold storage tank 2. The heating power of the heating and pressurizing device 1 can be changed according to the temperature signal received by the controller 9 from the temperature sensor 7 on the contact cooling plate 6, so as to adjust the internal pressure of the cold accumulation liquid storage tank 2, thereby increasing or reducing the liquid flow in the pipeline channel appropriately. Only when the temperature uniformity on the contact cooling plate 6 is not satisfied, the heating and pressurizing device 1 needs to be started to heat so as to regulate the liquid flow in the pipeline channel.
In one embodiment according to the invention, the heating and pressurizing device 1 is arranged in the lower half of the tank body inside the cold accumulation liquid storage tank 2.
In one embodiment according to the invention, the heating and pressurizing device 1 is a heating rod or a heating belt. When the heating and pressurizing device 1 is a heating rod, the heating rod can be horizontally arranged in the tank body, and when the heating and pressurizing device 1 is a heating belt, the heating belt can be circumferentially arranged on the lower half surface of the tank body.
In one embodiment of the present invention, the cold accumulation liquid storage tank 2 is provided with a liquid injection port 3 and a liquid injection valve 4 for controlling the opening and closing states of the liquid injection port 3. When cooling working medium is required to be added into the cold accumulation liquid storage tank 2, the liquid injection valve 4 on the liquid injection port 3 is opened, the liquid injection port 3 of the cold accumulation liquid storage tank 2 can be connected to a vacuumizing machine and a cooling working medium tank through a fluorine adding meter, a vacuum environment is created in advance through the vacuumizing machine, then the vacuumizing environment is closed, and the cooling working medium can be added into the cold accumulation liquid storage tank 2 under a negative pressure environment. After filling, the liquid filling valve 4 is in a normally closed state.
In one embodiment according to the invention, the throttle device 5 is a throttle device of variable throttle area. The throttle area of the throttle device 5 is changed to regulate and control the superheat degree of the cooling working medium in the contact cooling plate 6, so that the condition that the cooling working medium is evaporated to dryness and only has sensible heat in the latter half area of the channel in the contact cooling plate 6 is prevented.
In one embodiment according to the invention, the throttle device 5 is a thermal expansion valve or an electronic expansion valve.
In one embodiment according to the invention, the internal channel manifold of the contact cooling plate 6 corresponds to the arrangement of heat generating electrons. According to different heat dissipation requirements of electronic devices, the internal channel form of the contact cooling plate 6 is set, and when in use, heat-generating electrons are correspondingly arranged on the contact cooling plate 6, so that the contact thermal resistance can be reduced by coating heat-conducting silicone grease or indium pads and the like.
In one embodiment according to the invention, the self-priming pump 8 is a variable frequency self-priming pump, preferably a miniature variable frequency self-priming pump.
When the cooling system works and the adjustment of the throttling device 5 and the heating and pressurizing device 1 can not meet the flow requirement, the self-priming pump 8 is required to be started, so that the channel outlet of the contact cooling plate 6 forms a negative pressure environment to achieve the purpose of adjusting the flow; under the mode of one tank of multipath, the variable-frequency self-priming pump can be adjusted according to the cooling temperature uniformity requirements of different electrons so as to meet the requirement of flow adjustment.
The controller 9 receives the temperature signal from the temperature sensor 7, and controls the heating and pressurizing device 1, the throttling device 5 and the self-priming pump 8 through the heating and pressurizing device control branch 13, the throttling device control branch 12 and the self-priming pump control branch 10 respectively.
The embodiment of the invention provides a novel open unpowered controllable flow phase change cooling system, the cooling working medium is subjected to phase change in the contact cooling plate 6, the heat exchange coefficient is high, the proper cooling temperature and cooling uniformity can be provided, and the high-efficiency stable operation of a high-power electronic device on an aircraft can be realized. Compared with the traditional liquid cooling circulation cooling system, the phase change cooling system can rapidly and stably cool electronic devices with high heat flux, can meet different cooling temperature uniformity requirements by adjusting the flow of cooling working medium, and has better stability and usability.
The embodiment of the invention also provides a control method of the open type controllable flow phase-change cooling system, which comprises the following steps: detecting a temperature signal of the contact cooling plate 6 by a temperature sensor 7; the controller 9 receives the temperature signal of the temperature sensor 7 and adjusts the flow rate of the cooling system by controlling the throttle device 5, the heating and pressurizing device 1 or the self-priming pump 8, thereby controlling the temperature of the contact cooling plate 6 within the set requirements.
Referring to FIG. 1, a schematic diagram of a single-pass open-type controllable flow phase-change cooling system is shown.
In one embodiment according to the present invention, when the temperature sensor 7 detects that the temperature of the contact cooling plate 6 is higher than the temperature set by the controller 9, the temperature sensor 7 transmits a detection signal to the controller 9 through the temperature sensor feedback branch 11, the controller 9 receives the signal and opens the throttling device 5 through the throttling device control branch 12, so that the cooling medium in the cold accumulation liquid storage tank 2 enters the contact cooling plate 6 through the pipeline, and phase change takes place in the contact cooling plate 6 to take away heat, thereby controlling the temperature of the contact cooling plate 6 within the set requirement.
In one embodiment of the invention, when the temperature sensor 7 detects that the uniformity of the surface temperature of the contact cooling plate 6 is not satisfied, namely, the phenomenon of evaporating the local cooling working medium in the contact cooling plate 6 occurs, the temperature sensor 7 transmits a detection signal to the controller 9 through the temperature sensor feedback branch 11, the controller 9 receives the signal and starts the heating and pressurizing device 1 through the heating and pressurizing device control branch 13, so that the pressure in the cold storage liquid tank 2 is properly increased and maintained, and the flow rate of the cooling working medium in a pipeline is improved; if the uniformity of the temperature of the surface of the contact cooling plate 6 detected by the temperature sensor 7 again still does not meet the set requirement, the self-priming pump 8 is started through the self-priming pump control branch 10, and a negative pressure environment is formed at the outlet of the contact cooling plate 6, so that the flow of cooling working medium in the pipeline is increased again until the temperature of the contact cooling plate 6 reaches the set requirement.
The cold accumulation liquid storage tanks 2 with different sizes can be configured according to different cold energy requirements of the contact cooling plates 6.
The cold accumulation liquid storage tank 2 can supply a plurality of the contact cooling plates 6, and the temperature of the different contact cooling plates 6 is regulated by controlling the self-priming pump 8 of each branch according to the temperature uniformity requirements of the different contact cooling plates 6 so as to achieve different setting requirements.
Referring to FIG. 2, a multiple open type controllable flow phase change cooling system is shown. The multi-channel open type controllable flow phase change cooling system mode is based on a single-channel open type controllable flow phase change cooling system mode, the cold accumulation liquid storage tank 2 is respectively connected with a throttling device 5, a contact cooling plate 6 and a self-priming pump 8 of each branch in series through pipelines, and in fig. 2, three branches are taken as an example. Because the requirements of high-power electronics on different branch cooling plates on temperature uniformity are different, detection signals can be fed back to the controller 9 through the temperature sensor 7 of each branch and the feedback branch 11 of each branch temperature sensor, so that the controller 9 can control the branch 10 to adjust the rotation speed of the pump according to the setting of the branch which does not meet the setting requirements and finally meet the setting requirements of each branch.
The control method of the open unpowered controllable flow phase-change cooling system comprises a single-path and multi-path open unpowered controllable flow phase-change cooling system mode, and a controller in the multi-path open unpowered controllable flow phase-change cooling system can control and adjust the rotating speed of a self-priming pump through corresponding self-priming pump control branches according to the temperature uniformity requirements of different branch contact cooling plates, so that different setting requirements are met. The cooling working medium of the cooling system is subjected to phase change in the contact cooling plate, so that the heat exchange coefficient is high, proper cooling temperature and cooling uniformity can be provided, and high-efficiency and stable operation of the high-power electronic device on the aircraft can be realized. Compared with the traditional liquid cooling circulation cooling system, the invention can rapidly and stably cool the electronic device with high heat flux, can meet different cooling temperature uniformity requirements by adjusting the flow of the cooling working medium, and has better stability and usability.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The open type controllable flow phase change cooling system is characterized by comprising a cold storage liquid tank, a throttling device, a contact type cooling plate, a self-priming pump and a controller, wherein a temperature sensor is arranged on the contact type cooling plate, the cold storage liquid tank, the throttling device, the contact type cooling plate and the self-priming pump are sequentially connected in series through a pipeline, the cold storage liquid tank is provided with a heating pressurization device for adjusting the internal pressure of the cold storage liquid tank, and the controller is respectively connected with the heating pressurization device, the throttling device, the temperature sensor and the self-priming pump through data transmission lines;
the self-sucking pump is used for forming a negative pressure environment at the outlet of the contact cooling plate when the uniformity of the plate surface temperature of the contact cooling plate does not meet the set requirement so as to improve the flow of cooling working medium in the pipeline and enable the temperature of the contact cooling plate to reach the set requirement;
the controller receives a temperature signal of the temperature sensor, and adjusts the flow of the cooling system by controlling the throttling device, the heating and pressurizing device or the self-priming pump, so that the temperature of the contact cooling plate is controlled within a set requirement.
2. An open, controllable flow phase change cooling system according to claim 1, wherein said heating and pressurizing means is located in the lower half of the interior of said cold storage reservoir tank.
3. An open flow controllable phase change cooling system according to claim 2, wherein said heating and pressurizing means is a heating rod or a heating belt.
4. The open type phase-change cooling system with controllable flow according to claim 1, wherein the cold accumulation liquid storage tank is provided with a liquid injection port and a liquid injection valve for controlling the opening and closing states of the liquid injection port.
5. An open, controlled flow phase change cooling system according to claim 1, wherein the throttling means is a variable throttle area throttling means.
6. An open flow controllable phase change cooling system according to claim 5, wherein said throttling means is a thermal expansion valve or an electronic expansion valve.
7. An open flow controllable phase change cooling system according to claim 1, wherein the internal channel manifold of the contact cooling plate corresponds to the arrangement of heat generating electrons.
8. A method of controlling an open, controllable flow phase change cooling system according to any one of claims 1-7, comprising:
detecting a temperature signal of the contact cooling plate through a temperature sensor; the controller receives the temperature signal of the temperature sensor and adjusts the flow of the cooling system by controlling the throttling device, the heating and pressurizing device or the self-sucking pump, so that the temperature of the contact cooling plate is controlled within the set requirement.
9. The control method according to claim 8, wherein the controller adjusts the flow rate of the cooling system by controlling the throttle device:
when the temperature sensor detects that the temperature of the contact cooling plate is higher than the temperature set by the controller, the temperature sensor transmits a detection signal to the controller, the controller receives the signal and opens the throttling device, so that the cooling working medium in the cold accumulation liquid storage tank enters the contact cooling plate through the pipeline, and the temperature of the contact cooling plate is controlled within the set requirement.
10. The control method according to claim 8, wherein the controller adjusts the flow rate of the cooling system by controlling a heating-pressurizing device or a self-priming pump:
when the temperature sensor detects that the uniformity of the plate surface temperature of the contact cooling plate does not meet the requirement, the temperature sensor transmits a detection signal to the controller, the controller receives the signal and starts the heating and pressurizing device to properly raise and maintain the pressure in the cold accumulation liquid storage tank, so that the flow of the cooling working medium in the pipeline is improved; if the uniformity of the plate surface temperature of the contact cooling plate detected by the temperature sensor again still does not meet the set requirement, the self-priming pump is started, a negative pressure environment is formed at the outlet of the contact cooling plate, and the flow of cooling working medium in the pipeline is increased again until the temperature of the contact cooling plate reaches the set requirement.
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| CN108548443B (en) * | 2018-03-01 | 2020-07-14 | 上海交通大学 | Thermochemical adsorption heat storage device |
| CN111629572B (en) * | 2020-07-03 | 2022-08-05 | 中国电子科技集团公司第十四研究所 | Self-adaptive flow adjusting method and device for liquid cooling cold plate of electronic equipment |
| CN111998707B (en) * | 2020-09-03 | 2022-03-08 | 中国电子科技集团公司第十四研究所 | Multi-parallel branch stabilizing device and method for two-phase cooling system |
| CN112292004B (en) * | 2020-10-27 | 2021-12-07 | 株洲中车时代电气股份有限公司 | Pump-driven two-phase cooling system and working method thereof |
| CN113677169A (en) * | 2021-09-10 | 2021-11-19 | 新风光电子科技股份有限公司 | Separated phase-change heat dissipation inverter |
| CN114352503A (en) * | 2022-01-21 | 2022-04-15 | 北京博瑞翔伦科技发展有限公司 | Air inlet protection structure of built-in pneumatic air pump of edge calculation device |
| CN114423249A (en) * | 2022-01-29 | 2022-04-29 | 联想(北京)有限公司 | Heat radiation structure |
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