CN205209306U - High thermal current density device is with heat sink - Google Patents
High thermal current density device is with heat sink Download PDFInfo
- Publication number
- CN205209306U CN205209306U CN201520869211.9U CN201520869211U CN205209306U CN 205209306 U CN205209306 U CN 205209306U CN 201520869211 U CN201520869211 U CN 201520869211U CN 205209306 U CN205209306 U CN 205209306U
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- Prior art keywords
- heat sink
- heat
- adjusting rod
- chamber
- flux device
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Abstract
The utility model discloses a high thermal current density device is with heat sink aims at providing one kind and has automatically regulated heat -sinking capability, can effectively avoid the heat sink of surperficial focus production that generate heat. Include the working chamber of constituteing by upper cover and bottom, on covered the injection subassembly, there is the export on the bottom, there are a plurality of rib posts on the bottom plate of bottom, be hollow evaporation chamber in the bottom plate of bottom, it includes the spray tube to spray the subassembly, the choke, adjust pole and baffle, the spray tube includes reducing section and hole enlargement section along the flow direction, reducing section has the choke with crossing of hole enlargement section, the baffle is located hole enlargement section below, the regulation pole is hollow structure, adjust the lower extreme and the evaporation chamber intercommunication of pole, it is located the choke below to adjust the pole upper end, adjust the sealed flexible diaphragm in pole upper end, the flexible sheet is connected with the regulation terminal through reciprocating change choke injection area, form the atomizing space between baffle and the hole enlargement section. The design that this is heat sink through variable nozzle choke sectional area has promoted the operating stability and the security of device.
Description
Technical field
The utility model relates to Thermal Power Engineering technical field, and particularly one is applicable to high heat flux device with heat sink.
Background technology
For the cooling of high heat flux device, traditional heat-dissipating mode is mainly based on wind-cooling heat dissipating, other also comprises the types of cooling such as liquid cooling, heat pipe heat radiation, semiconductor refrigerating and mini-refrigerator system cooling, and wherein air-cooled and liquid cooling is the high heat flux device type of cooling the most common and cheap.
Air-cooled is force to drive air to flow through cooled device surface by fan, the heat that cooled subject surface produces is taken away in the mode of heat convection, but wind-cooling heat dissipating itself has certain limitation, such as when heat flow density exceedes certain value, common wind-cooling heat dissipating will reach capacity, and cannot be operated in and more work under high heat flux condition.Compared with air-cooled radiator, traditional liquid cooling heat radiator takes away the heat on heater element surface mainly through circulating pump drive fluid, and liquid cooling heat radiator has that noise is little, thermal resistance is low and on advantages such as ambient temperature impact are little.Tradition liquid-cooling heat radiation mainly by processing One's name is legion, different heat conduction rib post on evaporimeter base plate, not only increase the flow resistance of liquid and the volume of radiator itself, add the power consumption of circulating pump, and heat-transfer effect is not good, easily there is focus in heating element surface, limits the further propagation and employment of liquid cooling heat radiator.
Utility model content
The purpose of this utility model is to overcome weak point of the prior art, provides one to have and automatically regulates heat-sinking capability, and that can effectively avoid heating surface focus to produce is heat sink.
The technical scheme adopted for realizing the purpose of this utility model is:
A kind of high heat flux device is with heat sink, comprise the working chamber of the hollow sealing be made up of upper cover and bottom, cover on described and be provided with ejection assemblies, described bottom is provided with outlet, the base plate of described bottom is provided with multiple rib post, it is the evaporation cavity of hollow in the base plate of described bottom, described ejection assemblies comprises jet pipe, trunnion, adjusting rod and baffle plate, described jet pipe streamwise comprises undergauge section and extension diameter section, described undergauge section and extension diameter section intersection are provided with described trunnion, described baffle plate is positioned at below described extension diameter section, described adjusting rod is hollow structure, the lower end of described adjusting rod is communicated with described evaporation cavity, described adjusting rod upper end is positioned at below described trunnion, described adjusting rod upper end is sealed and installed with flexible sheet, described flexible sheet with by moving up and down the adjustable side sub-connection changing described trunnion projected area, atomization space is formed between described baffle plate and described extension diameter section, phase-change working substance is filled with in described adjusting rod and evaporation cavity.
The coaming plate part of described bottom is the steam rising chamber of hollow, the upper end in described steam rising chamber is connected with many heat-exchanging tube bundles, the lower end of many described heat-exchanging tube bundles is communicated with liquid backflow chamber, and the lower end in described liquid backflow chamber is positioned at the below of described evaporation cavity liquid levels.
Described rib post lower end is fixedly installed in the bottom of described evaporation cavity, and described rib post upper end is positioned at described working chamber through described evaporation cavity.
Described working chamber is cylindrical, and described rib post is uniformly distributed along the circumference of described working chamber, is radially interspersed.
Many described heat-exchanging tube bundles press the center of bottom described in certain slope slope aspect, and many described heat-exchanging tube bundle entirety are radially circumferentially evenly arranged.
Described liquid backflow chamber is a circular hollow cavity, and described hollow cavity centre forms jetting fluid recover, and described jetting fluid recover is communicated with described working chamber by the leak-off pipe through described liquid backflow chamber.
Described adjusting rod is arranged at the center of described base plate.
Described upper cover and bottom are formed by Copper fabrication.
The utility model has following beneficial effect:
1, the heat sink design by variable-nozzle trunnion sectional area of the present utility model, can effectively help heat sink reply high heat flux device power to rise or non-normal working time the hot-fluid that occurs sharply to rise situation, by the mode of enhanced heat exchange surface jet impingement heat transfer, coupling thermic load and heat sink heat-sinking capability and efficiency, improve operation stability and the security of high heat flux device.
2, the heat sink design passing through adjusting rod and flexible sheet and adjustment terminal of the present utility model, can regulate heat sink heat-sinking capability automatically according to the change of thermic load, and heating surface can be avoided to produce focus, good stability.
3, the heat exchange mode that combines with phase-change heat transfer of heat sink employing jet impulse of the present utility model, makes heat sink unit volume heat dissipation capacity significantly increase, and can successfully manage and have high heat flux device heat radiation that is high-power, high load capacity feature.
4, the heat sink phase transformation space arranged by base plate of the present utility model not only makes base plate rate of heat transfer significantly promote, and the effect of heat pipe samming can be played in phase transformation space simultaneously, effectively can avoid the generation of device surface focus.
Accompanying drawing explanation
Figure 1 shows that the heat sink schematic appearance of the utility model high heat flux device;
Figure 2 shows that the heat sink top view of the utility model high heat flux device;
Figure 3 shows that the A-A sectional view of Fig. 2;
Figure 4 shows that the B-B sectional view of Fig. 3;
Figure 5 shows that the sectional view of the heat sink ejection assemblies of the utility model high heat flux device;
Figure 6 shows that the heat sink graphics of the utility model high heat flux device.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
The utility model high heat flux device with heat sink schematic diagram as shown in figs 1 to 6, comprise the working chamber 20 of the hollow sealing be made up of upper cover 1 and bottom 2, in the present embodiment, described upper cover 1 and described bottom 2 pass through welded seal.Described upper cover 2 is provided with ejection assemblies, described bottom 2 is provided with outlet 4, the base plate 5 of described bottom 2 is provided with multiple rib post 6, described rib post 6 plays enhance heat and flow-disturbing effect in described working chamber 20, in the present embodiment, described rib post 6 lower end is fixedly installed in the bottom of described evaporation cavity 7, and stretches in described working chamber 20 through described evaporation cavity 7.It is the evaporation cavity 7 of hollow in the base plate 5 of described bottom 2.Described ejection assemblies comprises jet pipe 3, trunnion 18, adjusting rod 13 and baffle plate 14, described jet pipe 3 streamwise comprises undergauge section 17 and extension diameter section 19, described undergauge section 17 is provided with described trunnion 18 with extension diameter section 19 intersection, described baffle plate 14 is positioned at below described extension diameter section 19, described adjusting rod 13 is hollow structure, the lower end of described adjusting rod 13 is communicated with described evaporation cavity 7, described adjusting rod 13 upper end is positioned at below described trunnion 18, described adjusting rod 13 upper end is sealed and installed with flexible sheet 15, described flexible sheet 15 is connected with by moving up and down the adjustment terminal 16 changing described trunnion projected area, atomization space 21 is formed between described baffle plate 14 and described extension diameter section 19.Phase-change working substance is filled with in described adjusting rod 13 and evaporation cavity 7.
In the present embodiment, the coaming plate part of described bottom 2 is the steam rising chamber 8 of hollow, the upper end in described steam rising chamber 8 is connected with many heat-exchanging tube bundles 9, the lower end of many described heat-exchanging tube bundles 9 is communicated with liquid backflow chamber 10, and the lower end in described liquid backflow chamber 10 is positioned at the below of described evaporation cavity 7 liquid levels.Described liquid backflow chamber 10 is preferably a circular hollow cavity.Described hollow cavity centre forms jetting fluid recover, and described jetting fluid recover is communicated with described working chamber 20 by the leak-off pipe 11 through described liquid backflow chamber.Wherein, the Way out of leak-off pipe, towards the outlet 4 on bottom, is convenient to atomizing of liquids and is flowed out.
In the present embodiment, described working chamber 20 is cylindrical, and described rib post 6 is uniformly distributed along the circumference of described working chamber 20, is radially interspersed.
In the present embodiment, many described heat-exchanging tube bundles 9 are by the center of bottom 2 described in certain slope slope aspect, and many described heat-exchanging tube bundle 9 entirety are radially circumferentially evenly arranged, and the liquid of condensation is along the slope current of heat-exchanging tube bundle to liquid backflow chamber 10.
Described adjusting rod 13 is arranged at the center of described base plate 5.
In the present embodiment, upper cover 1 and bottom 2 are formed by Copper fabrication.
When the utility model high heat flux device is with heat sink work, the small part thermic load putting on described base plate 5 is passed in described working chamber 20 by the heat conduction of the rib post 6 of described heat radiation, another part thermic load directly acts on the phase-change working substance 12 in described evaporation cavity 7, because described liquid backflow chamber 10 stretches in described evaporation cavity 7, and exit is lower than the liquid level of phase-change working substance 12, the entrance location in described steam rising chamber 8 is close to the top of described evaporation cavity 7 simultaneously, therefore the steam produced after the phase transformation of described phase-change working substance 12 can radially to the surrounding transmission of described base plate 5, and enter described steam rising chamber 8, because the inner wall temperature in described steam rising chamber 8 is lower, the drop produced after part steam-condensation can return described evaporation cavity 7 along the inwall in described steam rising chamber 8, most of steam can continue advance along described steam rising chamber 8 and enter in heat-exchanging tube bundle 9 described in each in addition, the atomized drop of the injection in the outer wall of steam heat-exchanging tube bundle 9 described in each and working chamber 20 carries out efficient phase transformation condensation heat transfer, in described heat-exchanging tube bundle 9 after steam condensation under gravity along described heat-exchanging tube bundle 9 to center flow, and converge in described liquid backflow chamber 10, finally be back in described evaporation cavity 7 through described liquid backflow chamber 10, complete phase-change working substance circulation.For heat sink interior cooling medium circulation, the cooling fluid with certain pressure enters the undergauge section 17 of described jet pipe, because sectional area constantly reduces, therefore the flow velocity of cooling medium constantly rises, when the space that cooling medium is consisted of described trunnion 18 and described adjustment terminal 16, the speed of cooling medium reaches maximum, thereafter cooling medium is injected into described atomization space 21, due to flowing space sudden change, the pressure of cooling medium reduces, itself is also dispersed into droplet one by one, the droplet of high-speed motion constantly collides with described extension diameter section 19 and described baffle plate 14 and is atomized in motion process, cooling medium after atomization enters described working chamber 20, cooling fin post 6 in cooling medium after atomization and described working chamber 20 and heat-exchanging tube bundle 9 high-speed impact also carry out heat exchange, take away cooling fin post and described heat-exchanging tube bundle brings heat sink heat into.Cooling medium after heat exchange through export 4 leave heat sink, wherein, part be ejected into liquid backflow chamber formed atomizing of liquids recover in cooling medium, discharged by leak-off pipe 11, and leave heat sink by outlet 4, complete heat transfer process.
When high heat flux device thermic load increases very fast, phase-change working substance phase transformation in described adjusting rod 13, described adjusting rod 13 internal pressure is caused to increase gradually, the described flexible sheet 15 on described adjusting rod 13 top produces deformation under the effect of the pressure and drives described adjustment terminal 16 to rise, the circulation area of described trunnion 18 is reduced, the speed thereupon entering the cooling medium of working chamber 20 rises, atomizing effect is strengthened, cooling fin post 6 and heat-exchanging tube bundle 9 surface are under the effect of high speed impact jet, the coefficient of heat transfer on its surface is promoted rapidly, therefore the sharply rising causing device surface temperature because of base plate 5 thermic load big ups and downs can effectively be suppressed, protective effect is served to high heat flux device.When thermic load reduces, the phase variable of the phase-change working substance in described adjusting rod 13 reduces, described adjusting rod 13 internal pressure is caused to reduce gradually, the deformation that the described flexible sheet 15 on described adjusting rod 13 top produces under the effect of the pressure reduces, drive described adjustment terminal 16 to decline, the circulation area of described trunnion 18 is increased, the speed thereupon entering the cooling medium of working chamber 20 reduces, atomizing effect is weakened, and heat exchange amount reduces.
The above is only preferred embodiment of the present utility model; it should be noted that; for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (8)
1. a high heat flux device is with heat sink, comprise the working chamber of the hollow sealing be made up of upper cover and bottom, cover on described and be provided with ejection assemblies, described bottom is provided with outlet, the base plate of described bottom is provided with multiple rib post, it is characterized in that, it is the evaporation cavity of hollow in the base plate of described bottom, described ejection assemblies comprises jet pipe, trunnion, adjusting rod and baffle plate, described jet pipe streamwise comprises undergauge section and extension diameter section, described undergauge section and extension diameter section intersection are provided with described trunnion, described baffle plate is positioned at below described extension diameter section, described adjusting rod is hollow structure, the lower end of described adjusting rod is communicated with described evaporation cavity, described adjusting rod upper end is positioned at below described trunnion, described adjusting rod upper end is sealed and installed with flexible sheet, described flexible sheet with by moving up and down the adjustable side sub-connection changing described trunnion projected area, atomization space is formed between described baffle plate and described extension diameter section, phase-change working substance is filled with in described adjusting rod and evaporation cavity.
2. high heat flux device according to claim 1 is with heat sink, it is characterized in that, the coaming plate part of described bottom is the steam rising chamber of hollow, the upper end in described steam rising chamber is connected with many heat-exchanging tube bundles, the lower end of many described heat-exchanging tube bundles is communicated with liquid backflow chamber, and the lower end in described liquid backflow chamber is positioned at the below of described evaporation cavity liquid levels.
3. high heat flux device according to claim 1 and 2 is with heat sink, it is characterized in that, described rib post lower end is fixedly installed in the bottom of described evaporation cavity, and described rib post upper end is positioned at described working chamber through described evaporation cavity.
4. high heat flux device according to claim 3 is with heat sink, it is characterized in that, described working chamber is cylindrical, and described rib post is uniformly distributed along the circumference of described working chamber, is radially interspersed.
5. high heat flux device according to claim 2 is with heat sink, it is characterized in that, many described heat-exchanging tube bundles press the center of bottom described in certain slope slope aspect, and many described heat-exchanging tube bundle entirety are radially circumferentially evenly arranged.
6. high heat flux device according to claim 2 is with heat sink, it is characterized in that, described liquid backflow chamber is a circular hollow cavity, described hollow cavity centre forms jetting fluid recover, and described jetting fluid recover is communicated with described working chamber by the leak-off pipe through described liquid backflow chamber.
7. high heat flux device according to claim 4 is with heat sink, it is characterized in that, described adjusting rod is arranged at the center of described base plate.
8. high heat flux device according to claim 4 is with heat sink, it is characterized in that, described upper cover and bottom are formed by Copper fabrication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520869211.9U CN205209306U (en) | 2015-11-04 | 2015-11-04 | High thermal current density device is with heat sink |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520869211.9U CN205209306U (en) | 2015-11-04 | 2015-11-04 | High thermal current density device is with heat sink |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205209306U true CN205209306U (en) | 2016-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520869211.9U Expired - Fee Related CN205209306U (en) | 2015-11-04 | 2015-11-04 | High thermal current density device is with heat sink |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205209306U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105258540A (en) * | 2015-11-04 | 2016-01-20 | 天津商业大学 | Heat sink for high heating flux device |
-
2015
- 2015-11-04 CN CN201520869211.9U patent/CN205209306U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105258540A (en) * | 2015-11-04 | 2016-01-20 | 天津商业大学 | Heat sink for high heating flux device |
| CN105258540B (en) * | 2015-11-04 | 2017-03-08 | 天津商业大学 | A kind of high heat flux device is with heat sink |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160504 Termination date: 20161104 |