CN216218363U - Refrigeration pump driven phase-change hot and cold plate cooling system combined with vapor chamber - Google Patents
Refrigeration pump driven phase-change hot and cold plate cooling system combined with vapor chamber Download PDFInfo
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- CN216218363U CN216218363U CN202122377987.7U CN202122377987U CN216218363U CN 216218363 U CN216218363 U CN 216218363U CN 202122377987 U CN202122377987 U CN 202122377987U CN 216218363 U CN216218363 U CN 216218363U
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- 238000001816 cooling Methods 0.000 title claims abstract description 70
- 238000005057 refrigeration Methods 0.000 title claims description 11
- 230000008859 change Effects 0.000 claims abstract description 52
- 230000017525 heat dissipation Effects 0.000 claims abstract description 50
- 238000002791 soaking Methods 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 239000003507 refrigerant Substances 0.000 claims description 82
- 239000000498 cooling water Substances 0.000 claims description 52
- 239000007788 liquid Substances 0.000 claims description 37
- 238000003860 storage Methods 0.000 claims description 12
- 229910001128 Sn alloy Inorganic materials 0.000 claims description 7
- JWVAUCBYEDDGAD-UHFFFAOYSA-N bismuth tin Chemical compound [Sn].[Bi] JWVAUCBYEDDGAD-UHFFFAOYSA-N 0.000 claims description 7
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052797 bismuth Inorganic materials 0.000 claims description 3
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims 1
- 230000004907 flux Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 239000002609 medium Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000000110 cooling liquid Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000008367 deionised water Substances 0.000 description 3
- 229910021641 deionized water Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000012736 aqueous medium Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a phase-change heat exchange cold plate heat dissipation system driven by a refrigerating pump combined with a vapor chamber; comprises a soaking plate and a phase change cold plate tightly combined with the soaking plate; the outlet of the phase change cold plate is provided with two branches, wherein one branch circulates with the air cooling system, and the other branch circulates with the water cooling system; the utility model provides a heat dissipation system with higher heat dissipation capability after the heat dissipation area of the heating element is enlarged by a plurality of times through the soaking plate, and the degree of freedom of using a natural cold source is greatly expanded. At heat flux densities up to 50X 104W/m2In the time, a heat dissipation system of a natural cold source can still be used, and the energy-saving effect is remarkable.
Description
Technical Field
The utility model relates to the field of heat dissipation of high heat flux electronic and electrical equipment, in particular to a phase change heat exchange cold plate heat dissipation system driven by a refrigerating pump combined with a vapor chamber.
Background
In recent years, with the requirement of higher integration and higher performance of electronic devices, the heat flux density of the electronic devices is increased, and the requirement of heat dissipation and energy efficiency cannot be met only by air cooling heat dissipation, so that the liquid cooling plate is increasingly applied due to the characteristic of efficient heat dissipation.
The liquid cooling technology of the liquid cooling plate has the advantages that:
1) a liquid is used as a heat transfer medium to reduce the temperature of the data center. The heat capacity is large, and the heat dissipation efficiency is high;
2) at present, natural cold sources can be used for replacing electric-driven vapor compression refrigeration in most areas, the cooling efficiency is greatly improved, and the initial investment, the energy consumption and the cost of a cooling system are obviously reduced. The noise of the cooling system can also be reduced.
At present, the available liquid cooling technology of liquid cooling plate mainly has two technical routes:
1) cooling the non-phase change cold plate containing the aqueous medium;
2) the refrigerant pump drives the refrigerant phase change heat exchange cold plate to cool.
Although water has excellent thermal characteristics, a large thermal conductivity of 0.607W/(m ℃ C.), a large specific heat of 4.18kJ/(kg ℃ C.), and thus excellent heat exchange performance. However, it has conductivity when it contains impurities, and is the largest defect. Leak prevention measures are costly. In the practical application process, deionized water is required to be prepared and the constant pressure of the system is required to be maintained, so that the system is complex. Although the liquid cooling plate can adopt a high-fin expansion surface, the flow velocity of the ethylene glycol and deionized water cooling liquid is still very low, the liquid cooling plate is in a laminar flow state, the heat exchange coefficient is small, and the heat dissipation performance is not ideal.
In order to overcome the defects of the water-containing medium cold plate type cooling technology, the refrigerant pump drives the phase change cold plate to cool, and the heat exchange coefficient is large and is as high as 40000W/m2K is 3-6 times of the cooling heat exchange coefficient of the cold plate of the mixed solution of the ethylene glycol and the deionized water, the heat exchange temperature difference is obviously reduced, and the heat exchange performance is excellent. The application range of the natural cold source can be enlarged.
The latent heat of phase change of the refrigerant is large, the mass flow of the refrigerant needing to be circulated is small, the refrigerant is subjected to boiling heat exchange during heat absorption, and high flow speed is not needed, so that the resistance of the heat exchange part can be designed to be small, the volume flow is increased after gasification but is not in a heat exchange area, and more measures can be taken to increase the flow cross section and reduce the flow resistance and the pump power consumption.
Phase transition temperature of refrigerant at normal pressureAre well below ambient temperature, vaporize immediately in the event of a leak, and exhibit electrically insulating properties. But when the power of the data center server chip is increased, the heat flux density is increased to 50 multiplied by 104W/m2In time, the heat exchange performance is still challenged, and the heat exchange temperature difference is increased to more than 10 ℃. The use of natural cold sources is still limited and there is a continuing need to improve their heat dissipation capabilities.
Disclosure of Invention
The present invention is directed to overcoming the above-mentioned disadvantages and drawbacks of the prior art and providing a heat removal system for a phase change heat exchange cold plate driven by a refrigeration pump in combination with a vapor chamber.
The utility model adopts the combination of the soaking plate and the phase change heat exchange cold plate driven by the refrigerant pump, can expand the base area of the phase change heat exchange cold plate by about 10 times or more, and because the heat diffusion efficiency of the soaking plate is far higher than that of copper metal and the like, the phase change heat exchange cold plate can be applied on the basis of the expanded base area, the heat dissipation performance can be further improved, the heat exchange temperature difference can be reduced to about 1/5 when only the phase change cold plate is adopted for heat exchange, the heat exchange temperature difference is reduced, the heat dissipation system with higher heat dissipation capability is provided, and the degree of freedom of using a natural cold source is greatly expanded. At heat flux densities up to 50X 104W/m2In time, a natural cold source heat dissipation system can still be used.
The utility model is realized by the following technical scheme:
a refrigeration pump driven phase change heat exchange cold plate heat removal system in combination with a vapor chamber, comprising:
a vapor chamber 102;
a phase change cold plate 103 closely attached to the upper surface of the soaking plate 102;
the outlet of the phase change cold plate 103 is provided with two branches; wherein,
the first branch is connected with a first stop valve 104, an air-cooled condenser 105, a liquid storage tank 106 and a refrigerant pump 107 in sequence through a pipeline, and then an outlet of the refrigerant pump 107 is connected to an inlet of the phase change cold plate 103;
the second branch is sequentially connected with the second stop valve 201, the passage A of the plate heat exchanger 202, the liquid storage tank 106 and the refrigerant pump 107 through pipelines, and then is connected to the inlet of the phase change cold plate 103 through the outlet of the refrigerant pump 107;
one port of the passage B of the plate heat exchanger 202 is sequentially connected with a closed cooling water tower 301 and a circulating cooling water pump 302 through a pipeline, and the outlet of the circulating cooling water pump 302 is connected to the other port of the passage B of the plate heat exchanger 202.
The tight connection means that the joint surface of the soaking plate 102 and the phase change cold plate 103 is melted and welded by bismuth tin alloy to eliminate the contact thermal resistance, and after the soaking plate 102 and the phase change cold plate 103 are connected, a medium is filled in and sealed.
The refrigerant pump 107, the fan of the air-cooled condenser 105, the fan and the circulating water pump of the closed cooling water tower 301, and the circulating cooling water pump 302 are all provided with a rotating speed regulator.
The bismuth-tin alloy is 58% of bismuth and 42% of tin, and the melting point is 140 ℃.
The bottom surface of the soaking plate 102 is tightly combined with the (high heat flux density) heating element 101; the surface of the heating element 101 is provided with a temperature sensor.
The heat dissipation method of the phase-change heat exchange cold plate heat dissipation system driven by the refrigerating pump combined with the soaking plate comprises the following steps:
the heat of the heating element 101 is transferred to the refrigerant in the phase change cold plate 103 through the soaking plate 102 in sequence, so that the refrigerant is gasified and absorbs the heat; the heat dissipation area of the soaking plate (102) is larger than that of the heating element (101);
the heat dissipation process comprises the following two modes:
air cooling mode: if the air cooling mode can meet the cooling requirement, the air cooling condenser 105 dissipates heat to the environment; at this time, the first stop valve 104 is turned on, and the air-cooled condenser 105 is started; the second stop valve 201 is closed, the fan and the circulating water pump in the closed cooling tower 301 are stopped, the circulating cooling water pump 302 is stopped, the refrigerant is driven by the refrigerant pump 107, firstly absorbs heat and is gasified in the phase change cold plate 103, then flows out of the phase change cold plate 103, is cooled to be liquid refrigerant in the air-cooled condenser 105 through the first stop valve 104, enters the liquid storage tank 106, and is driven by the refrigerant pump 107 to circulate again;
a water cooling mode: if the cooling requirement cannot be met by adopting the air cooling mode, the gasified refrigerant is cooled by the cooling water prepared by the closed cooling tower 301, so that the refrigerant is condensed and releases heat at the temperature lower than that of the air cooling mode, and the closed cooling tower 301 dissipates the heat to the environment; at this time, the first stop valve 104 is closed, the fan of the air-cooled condenser 105 is stopped, the second stop valve 201 is connected, the fan and the circulating water pump of the closed cooling tower 301 are started, and the circulating cooling water pump 302 is started; under the drive of the refrigerant pump 107, the refrigerant firstly absorbs heat and is gasified in the phase change cold plate 103, then flows out of the phase change cold plate 103, exchanges heat with circulating cooling water from the closed cooling tower 301 in the plate heat exchanger 202 through the second stop valve 201, is condensed into liquid refrigerant, enters the liquid storage tank 106, and is driven by the refrigerant pump 107 to circulate again; the circulating cooling water from the closed cooling water tower 301 condenses the gaseous refrigerant into a liquid refrigerant in the plate heat exchanger 202, absorbs the heat of the liquid refrigerant, increases the temperature, is driven by the circulating cooling water pump 302, and reduces the temperature after the heat is released to the environment in the closed cooling water tower 301 for recycling.
In the air cooling mode, the temperature of the heating element 101 can be adjusted by controlling the rotation speed of the refrigerant pump 107 and the rotation speed of the fan of the air-cooled condenser 105, so as to meet the requirements of heat dissipation and energy consumption reduction of the refrigerant pump 107 and the fan of the air-cooled condenser 105.
In the water cooling mode, the temperature of the heating element 101 can be adjusted by controlling the rotation speed of the refrigerant pump 107, the rotation speed of the circulating cooling water pump 302 and the rotation speeds of the fan and the circulating water pump of the closed cooling water tower 301, so as to meet the requirements of heat dissipation and reduce the energy consumption of the refrigerant pump 107, the circulating cooling water pump 302 and the fan and the circulating water pump of the closed cooling water tower.
The heat dissipation area of the soaking plate 102 is more than 10 times or 9-16 times larger than that of the heating element (101).
Compared with the prior art, the utility model has the following advantages and effects:
in the heat dissipation system, after the heat dissipation area of the heating element 101 is enlarged by the soaking plate 102 by a plurality of times, the heat dissipation efficiency of the soaking plate is far higher than that of copper metal, so that the phase change heat transfer cold plate can be applied on the basis of the enlarged base area, the heat dissipation performance can be further improved, the heat transfer temperature difference can be reduced to about 1/5 when the phase change cold plate is only used for heat transfer, the heat transfer temperature difference is reduced, the heat dissipation system with higher heat dissipation capacity is provided, and the use freedom of a natural cold source is greatly expanded. When the heat flow density is as high as 50 multiplied by 104W/m2, the heat dissipation system of a natural heat source can still be used, and the obvious energy-saving effect is achieved.
The utility model has two heat dissipation modes:
air cooling mode: when the required cooling temperature is higher, the air-cooled condenser 105 is adopted to radiate heat to the environment, at the moment, the first stop valve 104 is switched on, and the fan of the air-cooled condenser 105 is started; the second stop valve 201 is closed, the fan and the circulating water pump in the closed cooling water tower 301 are stopped, and the circulating cooling water pump 302 is stopped; under the drive of a refrigerant pump 107, a refrigerant firstly absorbs heat and is gasified in the phase change cold plate 103, then flows out of the phase change cold plate 103, is cooled to be a liquid refrigerant in the air-cooled condenser 105 through a first stop valve 104, enters a liquid storage tank 106, and is driven by the refrigerant pump 107 to circulate again;
in the air cooling mode, the temperature of the heating element 101 can be adjusted by controlling the rotation speed of the refrigerant pump 107 and the rotation speed of the fan of the air-cooled condenser 105, so as to meet the requirements of heat dissipation and energy consumption reduction of the refrigerant pump 107 and the fan of the air-cooled condenser 105.
A water cooling mode: when the required cooling temperature is lower, the gasified refrigerant is cooled by adopting cooling water prepared by the closed cooling tower 301, so that the refrigerant is condensed and releases heat at the lower temperature, the closed cooling tower 301 radiates the heat to the environment, and at the moment, the first stop valve 104 is closed and the fan of the air-cooled condenser 105 is stopped; the second stop valve 201 is connected, the fan and the circulating water pump of the closed cooling tower 301 are started, and the circulating cooling water pump 302 is started; under the drive of the refrigerant pump 107, the refrigerant firstly absorbs heat and is gasified in the phase change cold plate 103, then flows out of the phase change cold plate 103, exchanges heat with circulating cooling water from the closed cooling tower 301 in the plate heat exchanger 202 through the second stop valve 201, is condensed into liquid refrigerant, enters the liquid storage tank 106, and is driven by the refrigerant pump 107 to circulate again; circulating cooling water from the closed cooling water tower 301 condenses gaseous refrigerant into liquid refrigerant in the plate heat exchanger 202, the temperature rises after absorbing heat of the liquid refrigerant, the circulating cooling water is driven by a circulating cooling water pump 302, and the temperature is reduced and recycled after the closed cooling water tower 301 releases heat to the environment;
in the water cooling mode, the temperature of the heating element 101 can be adjusted by controlling the rotation speed of the refrigerant pump 107, the rotation speed of the circulating cooling water pump 302 and the rotation speeds of the fan and the circulating water pump of the closed cooling water tower 301, so as to meet the requirements of heat dissipation and reduce the energy consumption of the refrigerant pump 107, the circulating cooling water pump 302 and the fan and the circulating water pump of the closed cooling water tower.
The utility model has the advantages of simple and easy technical means, precise and ingenious conception, low manufacturing cost and positive popularization and application values.
Drawings
Fig. 1 is a schematic structural layout view of a phase-change heat exchange cold plate heat dissipation system driven by a refrigeration pump combined with a vapor chamber.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
As shown in fig. 1. The utility model discloses a phase change heat exchange cold plate (Liquid cooling plate) heat dissipation system driven by a refrigerating pump combined with a vapor chamber, which comprises:
a Vapor Chamber 102(Vapor Chamber);
a phase change cold plate 103 closely attached to the upper surface of the soaking plate 102;
the outlet of the phase change cold plate 103 is provided with two branches; wherein,
the first branch is connected with a first stop valve 104, an air-cooled condenser 105, a liquid storage tank 106 and a refrigerant pump 107 in sequence through a pipeline, and then an outlet of the refrigerant pump 107 is connected to an inlet of the phase change cold plate 103;
the second branch is sequentially connected with the second stop valve 201, the passage A of the plate heat exchanger 202, the liquid storage tank 106 and the refrigerant pump 107 through pipelines, and then is connected to the inlet of the phase change cold plate 103 through the outlet of the refrigerant pump 107;
one port of the passage B of the plate heat exchanger 202 is sequentially connected with a closed cooling water tower 301 and a circulating cooling water pump 302 through a pipeline, and the outlet of the circulating cooling water pump 302 is connected to the other port of the passage B of the plate heat exchanger 202.
The tight connection means that the joint surface of the soaking plate 102 and the phase change cold plate 103 is melted and welded by bismuth tin alloy to eliminate the contact thermal resistance, and after the soaking plate 102 and the phase change cold plate 103 are connected, a medium is filled in and sealed.
The refrigerant pump 107, the fan of the air-cooled condenser 105, the fan and the circulating water pump of the closed cooling water tower 301, and the circulating cooling water pump 302 are all provided with a rotating speed regulator.
The bismuth-tin alloy is 58% of bismuth and 42% of tin, and the melting point is 140 ℃.
The bottom surface of the soaking plate 102 is tightly combined with the (high heat flux density) heating element 101; the surface of the heating element 101 is provided with a temperature sensor.
As is well known to those skilled in the art, the vapor chamber 102 is a vacuum chamber with a fine structure on the inner wall, filled with pure water or other phase change heat transfer medium, usually made of copper, and has an appearance of a flat plate. When heat is conducted to the evaporation zone from the heat source, the cooling liquid in the cavity starts to generate the gasification phenomenon of the cooling liquid after being heated in the environment with low vacuum degree, at the moment, heat energy is absorbed, the volume rapidly expands, the whole cavity is rapidly filled with gaseous cooling medium, and the condensation phenomenon can be generated when the gaseous working medium contacts a relatively cold zone. The heat accumulated during evaporation is released by the condensation phenomenon, and the condensed cooling liquid returns to the evaporation heat source through the capillary tube of the microstructure, and the operation is repeated in the cavity. The microstructure in the soaking plate has two types: powder sintering, multilayer copper net.
As is well known to those skilled in the art, the phase change cold plate 103 (or referred to as a liquid cooling plate) is formed by machining a flow channel in a metal plate, an extended heat exchange surface is usually machined in the flow channel to improve heat exchange efficiency, a heat-generating electronic component is mounted on the surface of the plate, a cooling liquid enters from an inlet of the liquid cooling plate, absorbs heat in the flow channel in the liquid cooling plate, and flows out at an outlet to take away heat generated by the electronic component. The heat exchange fluid is divided into: 1) cooling the non-phase change cold plate containing the aqueous medium; 2) the refrigerant pump drives the refrigerant phase change heat exchange cold plate to cool. The common processes for forming the liquid cooling plate flow passage are as follows: friction welding, vacuum brazing, copper tube embedding, deep hole drilling and the like.
The heat dissipation method of the phase-change heat exchange cold plate heat dissipation system driven by the refrigerating pump combined with the soaking plate comprises the following steps:
the heat of the heating element 101 is transferred to the refrigerant in the phase change cold plate 103 through the soaking plate 102 in sequence, so that the refrigerant is gasified and absorbs the heat; the heat dissipation area of the soaking plate (102) is 10 times or 9-16 times of that of the heating element (101); the heat dissipation process comprises the following two modes:
air cooling mode: when the environmental temperature is low, namely if the air cooling mode is adopted to keep the temperature of the circulating refrigerant below 40 ℃, the cooling requirement can be met, the air cooling mode can be adopted, and the air cooling condenser 105 radiates heat to the environment;
at this time, the first stop valve 104 is turned on, and the air-cooled condenser 105 is started; the second stop valve 201 is closed, the fan and the circulating water pump in the closed cooling water tower 301 are stopped, and the circulating cooling water pump 302 is stopped; under the drive of a refrigerant pump 107, a refrigerant firstly absorbs heat and is gasified in the phase change cold plate 103, then flows out of the phase change cold plate 103, is cooled to be a liquid refrigerant in the air-cooled condenser 105 through a first stop valve 104, enters a liquid storage tank 106, and is driven by the refrigerant pump 107 to circulate again;
in the air cooling mode, the temperature of the heating element 101 can be adjusted by controlling the rotation speed of the refrigerant pump 107 and the rotation speed of the fan of the air-cooled condenser 105, so as to meet the requirements of heat dissipation and energy consumption reduction of the refrigerant pump 107 and the fan of the air-cooled condenser 105.
A water cooling mode: when the environmental temperature is high, namely the temperature of the circulating refrigerant cannot be maintained below 40 ℃ by adopting an air-cooled cooling mode and the cooling requirement cannot be met, a water-cooled cooling mode can be adopted, the gasified refrigerant is cooled by cooling water prepared by the closed cooling tower 301, so that the gasified refrigerant is condensed and released at the temperature lower than that of the air-cooled cooling mode, and the closed cooling tower 301 radiates heat to the environment;
at this time, the first stop valve 104 is closed and the fan of the air-cooled condenser 105 is stopped; the second stop valve 201 is connected, the fan and the circulating water pump of the closed cooling tower 301 are started, the circulating cooling water pump 302 is started, the refrigerant is driven by the refrigerant pump 107, firstly absorbs heat and gasifies in the phase change cold plate 103, then flows out of the phase change cold plate 103, exchanges heat with the circulating cooling water from the closed cooling tower 301 in the plate heat exchanger 202 through the second stop valve 201, condenses to liquid refrigerant, enters the liquid storage tank 106, and is driven by the refrigerant pump 107 to circulate again; the circulating cooling water from the closed cooling water tower 301 condenses the gaseous refrigerant into a liquid refrigerant in the plate heat exchanger 202, absorbs the heat of the liquid refrigerant, increases the temperature, is driven by the circulating cooling water pump 302, and reduces the temperature after the heat is released to the environment in the closed cooling water tower 301 for recycling.
In the water cooling mode, the temperature of the heating element 101 can be adjusted by controlling the rotation speed of the refrigerant pump 107, the rotation speed of the circulating cooling water pump 302 and the rotation speeds of the fan and the circulating water pump of the closed cooling water tower 301, so as to meet the requirements of heat dissipation and reduce the energy consumption of the refrigerant pump 107, the circulating cooling water pump 302 and the fan and the circulating water pump of the closed cooling water tower.
The heat dissipation system can expand the base area of the phase change heat exchange cold plate by about multiple times (10 times and more) through the ingenious and rigorous-conception system structure layout, and the heat diffusion efficiency of the soaking plate is far higher than that of copper metal, so the phase change heat exchange cold plate can be applied on the basis of the expanded base area, the heat dissipation performance can be further improved, the heat exchange temperature difference can be reduced to about 1/5 when the phase change cold plate is only adopted for heat exchange, and the heat exchange temperature difference is reduced.
The utility model provides a heat dissipation system with higher heat dissipation capability, and the degree of freedom of use of a natural cold source is greatly expanded. At heat flux densities up to 50X 104W/m2In the time, a heat dissipation system of a natural cold source can still be used, and the energy-saving effect is remarkable.
As described above, the present invention can be preferably realized.
The embodiments of the present invention are not limited to the above-described embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and they are included in the scope of the present invention.
Claims (6)
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| CN202122377987.7U CN216218363U (en) | 2021-09-29 | 2021-09-29 | Refrigeration pump driven phase-change hot and cold plate cooling system combined with vapor chamber |
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| CN202122377987.7U CN216218363U (en) | 2021-09-29 | 2021-09-29 | Refrigeration pump driven phase-change hot and cold plate cooling system combined with vapor chamber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113825370A (en) * | 2021-09-29 | 2021-12-21 | 华南理工大学 | System and method for radiating heat of phase-change heat exchange cold plate driven by refrigerating pump combined with vapor chamber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113825370A (en) * | 2021-09-29 | 2021-12-21 | 华南理工大学 | System and method for radiating heat of phase-change heat exchange cold plate driven by refrigerating pump combined with vapor chamber |
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