CN1697170A - Transmission canal with diphasic heat sink - Google Patents
Transmission canal with diphasic heat sink Download PDFInfo
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- CN1697170A CN1697170A CN 200410018256 CN200410018256A CN1697170A CN 1697170 A CN1697170 A CN 1697170A CN 200410018256 CN200410018256 CN 200410018256 CN 200410018256 A CN200410018256 A CN 200410018256A CN 1697170 A CN1697170 A CN 1697170A
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Abstract
Microchannels of groove are adopted in the invention to enhance capillarity of transmission channels of heat sink in two phases such as loop heat pipe, or capillary pumped loop or spray cooling device etc. Micro channels of groove can increase capillary force without increasing frictional resistance obviously so as to raise radiating efficiency. If effective sectional area of backflow channel is far smaller than sectional area of pipe in condensation segment, the capillarity actuating force of circular working fluid will be raised further. The said purpose can be done by using a plug to stop up core area of pipe in backflow segment or through treatment of shrinkage pipe.
Description
Technical field
The present invention is relevant with the heat radiation of the thermal source of tool high heat-flux, and can be used for electronic wafer in the computer or other needs in the heat radiation of cooling object in using.More particularly, be relevant with the transmission runner (transport line) in loop hot-pipe (loop heat pipe), capillary pump loop (capillary pumped loop), spray cooling device (spray cooling device) or other two-phase heat abstractor.
Background technology
Lasting progress along with electronic technology, make and on the wafer of more small size or volume, be accomplished stronger function, but the caloric value that simultaneous is higher reduces or damage to prevent its usefulness in the temperature of permission for keeping wafer, needs high efficiency radiating mode.
The two-phase cooling method is a kind of simply but extremely effective heat dissipating method, has been widely used on the needs of various heat radiations.Its operation principle is that the latent heat by workflow body fluid, vapour two alternate phase change transmits heat: at evaporation section (vaporization section), working fluid mat evaporation latent heat is taken away a large amount of heat energy from thermal source, its steam is full of the interior space of the former pipe that has vacuumized and condenses into liquid and discharge heat energy at condensation segment (condensation section), and the capillary force that inner capillary structure of hydraulic fluid provides flows back into the circulation that evaporation section carries out phase change, continues and heat energy is transferred at a distance from thermal source shed effectively.Heat pipe or spraying radiator promptly belong to this type of heat abstractor.Yet steam and withdrawing fluid in traditional heat pipe and the most plate heat pipe are done reverse flow.Because steam is opposite with the flow direction of withdrawing fluid, hinders the backflow of liquid mat capillary force, and then facilitate mummification and lost efficacy.For avoiding this type of shortcoming, be have capillary pump loop (capillary pumped loop, CPL) with loop hot-pipe (loop heat pipe, exploitation LHP).Fig. 1 is the schematic diagram of conventional circuit formula heat pipe configuration.Its structure comprises the evaporator 11, capillary structure 12 of a capillary structure, by the condenser runner 14 of steam flow channel 13, far-end, and the transmission runner (transport line) formed of withdrawing fluid runner 15, reach compensating liquid chamber 16 (compensation chamber).Its operation principle also is that the latent heat by workflow body fluid, vapour two alternate phase change transmits heat, also complete inner the capillary force that capillary structure provides of the start of working fluid, but be better than liquid, vapour phase shunting that traditional heat pipe part mainly is its working fluid, do unidirectional circulation, be easy to heat delivered to elsewhere is shed.Compensating liquid chamber 16 wherein is that segment fluid flow is scattered in amount of liquid in the return when being used for compensating start, avoids the evaporator mummification.
The withdrawing fluid runner of most loop hot-pipe and capillary pump loop only is simple pipe, all belongs to this type of as United States Patent (USP) font size 4,515,209 and TaiWan, China patent font size 402,092 grades.Because the vapour volume flow rate in the steam flow channel is much larger than the liquid volume flow rate of flow channel for liquids, so the required sectional area of withdrawing fluid runner is less.If two sections selected for use identical caliber, withdrawing fluid runner itself almost can not provide the capillary motive force during then big caliber; In tubule when footpath,, then the resistance in the steam flow channel was excessive.
In the loop hot-pipe that United States Patent (USP) font size 6,381,135 proposes, use steam flow channel, condenser runner and flow channel for liquids, as shown in Figure 2 with caliber.Evaporator 212 in the loop hot-pipe 200 is placed on the thermal source 204 on the substrate 202, and 204 mats of evaporator 212 and thermal source, one hot interface materials (thermal interface material) are connected.Evaporator 212 is a capillary structure 213, and the one end joins with the liquid return section 214 that comprises another capillary structure.The capillary structure of inserting in the liquid return section 214 (not shown) is the capillary force that drives liquid return for increasing, the clipped wire that can adopt sintered powder, wire netting or pile up.Steam section 216 is a simple pipeline.In addition also alternatively in condenser section 218 insert the capillary structure 219 that another can be different with aforementioned capillary structure.Yet this design has shortcoming, and condensed fluid wherein is back to must be through very long capillary structure in condenser, liquid return runner and the evaporator in the process of evaporator.Though the capillary structure that adds has increased capillary force, but this type of capillary structure has increased the frictional resistance of liquid return also by way of parenthesis, be unfavorable for the circulation of working fluid, make evaporator when high rate of heat dissipation, may mummification take place easily, limit its maximum heat-sinking capability.
Summary of the invention
The present invention proposes about the new design as the liquid return pipeline in the two-phase heat abstractors such as loop hot-pipe, capillary pump loop, spraying heat abstractor or other.The metal tube of transmission runner has a ring fluid channel structure at least on the inside pipe wall of liquid return section, this fluid channel structure can be when extrusion molding is made pipeline, the fluid channel groove of producing on tube wall also can be the single or multiple lift fluid channel capillary structure of making and be affixed on pipeline inner wall with crape folding stratum reticulare.Pipe core space at reflux section then clogs with an embolism, or reflux section is done the draw handle, so that the long-pending sectional area of liquid return runner actual cross-section much smaller than steam flow channel or condensation runner, capillary force is increased, and therefore the section capillary structure is a fluid channel, its frictional resistance is little, so help condensed fluid to be back to evaporator in the two-phase heat abstractor main body smoothly.
Aforementioned and further feature and advantage of the present invention can be by hereinafter with reference to the detailed descriptions of graphic preferred embodiment and clearer and more definite.
Description of drawings
Fig. 1 is the schematic diagram (prior art) of conventional circuit formula heat pipe configuration.
Fig. 2 is a United States Patent (USP) font size 6,381, the prior art of 135 loop hot-pipes that disclosed.
Fig. 3 is part excision figure (partially cutawayview) and the partial section of first embodiment of the transmission runner of the present invention's proposition.
Fig. 4 is part excision figure and the partial section of second embodiment of the transmission runner of the present invention's proposition.
Fig. 5 is part excision figure and the partial section of the 3rd embodiment of the transmission runner of the present invention's proposition.
Fig. 6 is part excision figure and the partial section of the 4th embodiment of the transmission runner of the present invention's proposition.
Fig. 7 is part excision figure and the partial section of the 5th embodiment of the transmission runner of the present invention's proposition.
Fig. 8 is part excision figure and the partial section of the 6th embodiment of the transmission runner of the present invention's proposition.
Fig. 9 is part excision figure and the partial section of the 7th embodiment of the transmission runner of the present invention's proposition.
Embodiment
Fig. 3 discloses the sectional view of first embodiment of the transmission runner that the present invention proposes to be applicable to the two-phase heat abstractor.This transmission runner 100 is divided into three sections: steam flow channel 103, condensation runner 104, and liquid return runner 105.One circular groove groove fluid channel 102 is arranged on metal tube 101 inwalls, can when the extrusion molding tubulation, be produced on the tube wall.Fluid channel is defined as the long fluid passage of water conservancy diameter (hydraulic diameter) less than 500 μ m in this article, and its cross sectional shape can be V-arrangement, triangle, square, trapezoidal, waveform or other shape.Clogging the pipe core space of liquid return runner 105 with an embolism 106, is the fluid channel row that form a ring seal.Above-mentioned embolism 106 available metals, plastic cement or other heat proof material are made.The base angle of groove fluid channel (shown in the A-A cross section) can help to collect the hydraulic fluid of condensation, and and then the mat capillary force pass to liquid return runner 105.Because liquid return runner 105 has sealing fluid channel row, so can effectively liquid transfer be returned the capillary structure (not being shown among the figure) in the two-phase heat abstractor main body.At the end of liquid return runner 105, optionally settle one section capillary structure 107, with two-phase heat abstractor main body in smooth and easy connection of capillary structure.Steam flow channel 103 or condensation runner 104 can be a common pipe, or its inwall contains groove.Condensation runner 104 shown in the A-A cross section of Fig. 3 has groove.The B-B cross section is positioned at the epimere part of liquid return runner 105, and the C-C cross section then is the sectional view when the end of liquid return runner 105 has been settled capillary structure 107.
After inserting embolism 106 in the liquid return runner 105, be the net sectional area that significantly reduces liquid return runner 105, increase the capillary force that drives working fluid cycles, the frictional resistance of unlikely obvious increase withdrawing fluid.
Fig. 4 discloses the sectional view of second embodiment of the transmission runner that the present invention proposes.The difference of this embodiment and aforementioned first embodiment does not have crape folding stratum reticulare 109 for increasing one decks in groove fluid channel 102 inboards of condensation runner section 104 at least, shown in section A-A, to increase the capillary force of fluid channel.No crape folding stratum reticulare 109 can be metal or non-metallic material.
Fig. 5 discloses the sectional view of the 3rd embodiment of the transmission runner that the present invention proposes.Fluid channel structure in this example is the single or multiple lift net fluid channel capillary structure of making of screen cloth, wherein comprises one deck crape folding stratum reticulare 108 at least, and the cross sectional shape of its crape folding can be V-arrangement, triangle, square, trapezoidal, waveform or other shape.Crape folding stratum reticulare 108 is contained liquid return runner section 105 at least.In liquid return runner 105, fill in embolism 106, make the fluid channel row (shown in section B-B) that form a ring seal in liquid return runner section 105, significantly to reduce the net sectional area of liquid return runner 105.If crape folding stratum reticulare is also contained condensation runner 104 parts, then attach the crape folding net fluid channel structure that row form with screen cloth on its inner tubal wall, shown in section A-A.Crape folding stratum reticulare 108 inboard alternative one decks that increase do not have crape folding stratum reticulare 109, then can form the bigger sealing fluid channel of capillary force in condensation runner 104 parts, as section A '-A ' shown in.Above-mentioned crape is rolled over stratum reticulare 108 or is not had crape folding stratum reticulare 109 and can be metal or non-metallic material.
Fig. 6 discloses the sectional view of the 4th embodiment of the transmission runner that the present invention proposes.Present embodiment is for Fig. 3 being disclosed embolism 106 deletions among the embodiment.In other words, the transmission runner in this example mainly is made of the passage that contains open little groove on the inwall, and all the other execution modes are identical with aforementioned part of being correlated with embodiment Fig. 3.
Fig. 7 discloses the sectional view of the 5th embodiment of the transmission runner that the present invention proposes.Present embodiment is for Fig. 4 being disclosed embolism 106 deletions among the embodiment.In other words, the transmission runner in this example mainly constitutes by containing the passage that does not have little groove that crape folding stratum reticulare 109 covers by one deck on the inwall, and all the other execution modes are identical with the part that the embodiment of earlier figures 4 is correlated with.Among this embodiment, the section that no crape folding stratum reticulare 109 covers should comprise 105 sections of 104 sections of condensation runners and liquid return runners at least, to strengthen capillary force.
Fig. 8 discloses the sectional view of the 6th embodiment of the transmission runner that the present invention proposes.Present embodiment is for Fig. 5 being disclosed embolism 106 deletions among the embodiment.In other words, the transmission runner in this example is to attach the crape folding stratum reticulare 108 that row are made of screen cloth at the smooth passage inwall, and all the other execution modes are identical with aforementioned part of being correlated with embodiment Fig. 5.Similarly, crape folding stratum reticulare 108 inboard alternative one decks that increase do not have crape folding stratum reticulare 109, then can form the bigger sealing fluid channel of capillary force in condenser runner 104 parts, as the section A among Fig. 5 '-A ' shown in.
Fig. 9 discloses the sectional view of the 7th embodiment of the transmission runner that the present invention proposes.Present embodiment is the passage (shown in section A-A) that contains the open channel fluid channel among the embodiment on the inwall for Fig. 6 is disclosed, and does the draw at the section of liquid return runner 105 and handles (shown in section B-B), to reduce its sectional area.Similarly, also can make the draw at the embodiment among Fig. 7 and handle (not shown).In addition, do in the section of the draw, can insert an embolism (not shown), further dwindle the net sectional area of liquid return runner 105 at liquid return runner 105.The end of the draw is optionally filled in a spot of capillary structure 107 (as shown in Figure 8), be able to two-phase heat abstractor main body in smooth and easy connection of capillary structure.
Other transmission runner embodiment with liquid return runner 105 of less net sectional area can not have the passage making (not shown) of groove fluid channel at inwall.The first is inserted an embolism 106 slightly littler than passage inside dimension at liquid return runner 105, and the liquid return runner does not have the inwall of groove and the close gap between the embolism path as coagulating liq.Also liquid return runner section 105 can be done draw processing in addition forms.Do also can insert an embolism again in the liquid return runner section that the draw handles, further reduce its net sectional area.In addition, comprise that in transmission the internal face of condensation runner section 104 can cover one deck and not have Zou and roll over stratum reticulare 109 in the runner at least, to increase capillarity.The end of liquid return runner is optionally filled in a spot of capillary structure 107, be able to two-phase heat abstractor main body in smooth and easy connection of capillary structure.
The loop hot-pipe that United States Patent (USP) font size 6,381,135 proposes is inserted metallic particles or wire netting in condenser runner and liquid return runner.The present invention then comprises a ring-type fluid channel layer and optionally adds the fluid channel row of a long embolism in liquid return runner section formation sealing, maybe liquid return runner section can be done the draw and handle, to strengthen capillary force, unlikely remarkable increase frictional force.So the two has obvious difference.
This invention is intended to contain for being familiar with this correlation technique personage is significantly new design, and therefore, the claim scope should be according to the widest annotation, to comprise all these type of similar designs, configuration and application.
Claims (21)
1. transmission runner that is applicable to the two-phase heat abstractor is characterized in that: comprise at least:
One steam flow channel section, the passage of the working fluid steam that produces as the evaporator in the above-mentioned two-phase heat abstractor main body; One condensation runner section becomes liquid for the vapor condenses that flows into from above-mentioned steam flow channel section; One liquid return runner section is back to above-mentioned evaporator for above-mentioned coagulating liq; The microscler groove fluid channel of one row is positioned at aforesaid liquid backflow runner section inwall, to strengthen capillarity.
2. described transmission runner as claimed in claim 1 is characterized in that: more comprise: the microscler groove fluid channel of row that is positioned at above-mentioned condensation runner section inwall.
3. transmission runner as claimed in claim 2 is characterized in that: more comprise: one deck does not have crape folding stratum reticulare, is placed at least and states condensation runner section and liquid return runner section inwall, to form the groove fluid channel of sealing.
4. transmission runner as claimed in claim 1 is characterized in that: the cross section of wherein transmitting runner is for circular.
5. transmission runner as claimed in claim 1 is characterized in that: the cross sectional shape of groove fluid channel wherein is V-arrangement, triangle, square, trapezoidal or waveform.
6. transmission runner as claimed in claim 1 is characterized in that: groove fluid channel wherein is made in the inwall of above-mentioned runner section.
7. transmission runner as claimed in claim 1 is characterized in that: groove fluid channel mat wherein attaches one deck crape folding stratum reticulare and forms at the inwall of above-mentioned runner section.
8. transmission runner as claimed in claim 7 is characterized in that: more comprise: one deck does not have crape folding stratum reticulare, is placed in above-mentioned crape folding stratum reticulare inboard, to form the groove fluid channel of sealing.
9. transmission runner as claimed in claim 1 is characterized in that: more comprise: one section capillary structure is placed in aforesaid liquid backflow flow field end.
10. transmission runner as claimed in claim 1 is characterized in that: more comprise: an embolism clogs the core space of aforesaid liquid backflow runner section, to reduce its net sectional area.
11. transmission runner as claimed in claim 10 is characterized in that: groove fluid channel wherein is made in the surface of above-mentioned embolism.
12. transmission runner as claimed in claim 11 is characterized in that: more comprise: one section capillary structure is placed in aforesaid liquid backflow flow field end.
13. transmission runner as claimed in claim 1 is characterized in that: liquid return runner section is wherein done the draw and is handled, to reduce its net sectional area.
14. transmission runner as claimed in claim 13 is characterized in that: more comprise: an embolism clogs the wherein core space of the liquid return runner section of the draw, more to reduce its net sectional area.
15. transmission runner as claimed in claim 13 is characterized in that: more comprise: one section capillary structure is placed in aforesaid liquid backflow flow field end.
16. a transmission runner that is applicable to the two-phase heat abstractor is characterized in that: comprise at least:
One steam flow channel section, the passage of the working fluid steam that produces as the evaporator in the above-mentioned two-phase heat abstractor main body;
One condensation runner section becomes liquid for the vapor condenses that flows into from above-mentioned steam flow channel section;
One flow channel for liquids section is back to above-mentioned evaporator for above-mentioned coagulating liq; And the net sectional area of aforesaid liquid backflow runner section is less than above-mentioned steam flow channel section or condensation runner section.
17. transmission runner as claimed in claim 16 is characterized in that: more comprise: one deck does not have Zou and rolls over stratum reticulare, is attached at the inwall of above-mentioned condensation runner section at least.
18. transmission runner as claimed in claim 16 is characterized in that: wherein the liquid return runner section of the less net sectional area of tool is to insert an embolism to form in this runner section.
19. transmission runner as claimed in claim 16 is characterized in that: wherein the liquid return runner section of the less net sectional area of tool is this section to be done draw processing form.
20. transmission runner as claimed in claim 16 is characterized in that: more comprise: one section capillary structure is placed in aforesaid liquid backflow flow field end.
21. transmission runner as claimed in claim 20 is characterized in that: more comprise: an embolism clogs the wherein core space of the liquid return runner section of the draw, more to reduce its net sectional area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410018256 CN1697170A (en) | 2004-05-12 | 2004-05-12 | Transmission canal with diphasic heat sink |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410018256 CN1697170A (en) | 2004-05-12 | 2004-05-12 | Transmission canal with diphasic heat sink |
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| Publication Number | Publication Date |
|---|---|
| CN1697170A true CN1697170A (en) | 2005-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410018256 Pending CN1697170A (en) | 2004-05-12 | 2004-05-12 | Transmission canal with diphasic heat sink |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100413059C (en) * | 2006-03-23 | 2008-08-20 | 胡凯 | Integratively formed chip superconducting radiator |
| CN102109257A (en) * | 2010-08-05 | 2011-06-29 | 中国科学院理化技术研究所 | Low-temperature loop heat pipe device |
| CN102155859A (en) * | 2011-04-30 | 2011-08-17 | 上海交通大学 | U-shaped gravity assisted heat pipe for freezing system |
| CN102269534A (en) * | 2011-07-25 | 2011-12-07 | 天津空中代码工程应用软件开发有限公司 | Spiral-flow-type heat conducting pipe |
| CN102345992A (en) * | 2010-07-30 | 2012-02-08 | 奇鋐科技股份有限公司 | Low pressure loop type thermosyphon device driven by pressure gradient |
| CN102514733A (en) * | 2011-12-28 | 2012-06-27 | 北京航空航天大学 | Microgravity environment-based spray cooling loop device |
| CN104634147A (en) * | 2015-01-27 | 2015-05-20 | 江苏中圣压力容器装备制造有限公司 | Pulsating heat pipe with micro-groove structure |
| CN104776739A (en) * | 2014-01-13 | 2015-07-15 | 杭州三花研究院有限公司 | Heat pipe heat exchanger, evaporator component and heat pump clothes dryer |
| WO2020114443A1 (en) * | 2018-12-05 | 2020-06-11 | 多美达瑞典有限公司 | Condensate return pipe for heating pipe radiator |
| TWI809848B (en) * | 2021-04-28 | 2023-07-21 | 日商古河電氣工業股份有限公司 | Evaporating portion structure and heat transfer member having the evaporating portion structure |
-
2004
- 2004-05-12 CN CN 200410018256 patent/CN1697170A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100413059C (en) * | 2006-03-23 | 2008-08-20 | 胡凯 | Integratively formed chip superconducting radiator |
| CN102345992A (en) * | 2010-07-30 | 2012-02-08 | 奇鋐科技股份有限公司 | Low pressure loop type thermosyphon device driven by pressure gradient |
| CN102109257A (en) * | 2010-08-05 | 2011-06-29 | 中国科学院理化技术研究所 | Low-temperature loop heat pipe device |
| CN102155859A (en) * | 2011-04-30 | 2011-08-17 | 上海交通大学 | U-shaped gravity assisted heat pipe for freezing system |
| CN102155859B (en) * | 2011-04-30 | 2013-06-12 | 上海交通大学 | U-shaped gravity assisted heat pipe for freezing system |
| CN102269534A (en) * | 2011-07-25 | 2011-12-07 | 天津空中代码工程应用软件开发有限公司 | Spiral-flow-type heat conducting pipe |
| CN102514733A (en) * | 2011-12-28 | 2012-06-27 | 北京航空航天大学 | Microgravity environment-based spray cooling loop device |
| CN102514733B (en) * | 2011-12-28 | 2014-04-09 | 北京航空航天大学 | Microgravity environment-based spray cooling loop device |
| CN104776739A (en) * | 2014-01-13 | 2015-07-15 | 杭州三花研究院有限公司 | Heat pipe heat exchanger, evaporator component and heat pump clothes dryer |
| CN104634147A (en) * | 2015-01-27 | 2015-05-20 | 江苏中圣压力容器装备制造有限公司 | Pulsating heat pipe with micro-groove structure |
| WO2020114443A1 (en) * | 2018-12-05 | 2020-06-11 | 多美达瑞典有限公司 | Condensate return pipe for heating pipe radiator |
| TWI809848B (en) * | 2021-04-28 | 2023-07-21 | 日商古河電氣工業股份有限公司 | Evaporating portion structure and heat transfer member having the evaporating portion structure |
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