CN103453791A - Gravity assisted heat pipe enhanced heat transfer structure - Google Patents
Gravity assisted heat pipe enhanced heat transfer structure Download PDFInfo
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- CN103453791A CN103453791A CN2013103538613A CN201310353861A CN103453791A CN 103453791 A CN103453791 A CN 103453791A CN 2013103538613 A CN2013103538613 A CN 2013103538613A CN 201310353861 A CN201310353861 A CN 201310353861A CN 103453791 A CN103453791 A CN 103453791A
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- heat pipe
- gravity assisted
- assisted heat
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- guide shell
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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Abstract
The invention discloses a gravity assisted heat pipe enhanced heat transfer structure, comprising a draft tube which is arranged in a cavity of a gravity assisted heat pipe, wherein an ascending channel of a vaporized working medium is formed in the draft tube; a descending channel of a liquid working medium is formed between the outer wall of the draft tube and the inner wall of the gravity assisted heat pipe; a steam through hole communicating the ascending channel to the descending channel is arranged at the upper part of the draft tube; a reflux hole communicating the descending channel to the ascending channel is arranged at the lower part of the draft tube. The gravity assisted heat pipe enhanced heat transfer structure is simple in structure and low in cost; the cold and hot airflow convection problem in the working process of the gravity assisted heat pipe is solved; the heat transfer efficiency and performance of the gravity assisted heat pipe are improved, so that the consumption of materials and energy sources is reduced.
Description
Technical field
The present invention relates to the gravity assisted heat pipe technical field, especially relate to a kind of gravity assisted heat pipe augmentation of heat transfer structure.
Background technology
Hot pipe technique is the heat transfer element of a kind of being called " heat pipe " of George Ge Luofo (George Grover) invention of U.S. Los Alamos (Los Alamos) National Laboratory in 1963, it takes full advantage of the Rapid Thermal hereditary property of heat-conduction principle and refrigeration filling, see through heat pipe the heat of thermal objects is delivered to rapidly outside thermal source, its capacity of heat transmission surpasses the capacity of heat transmission of any known metal.
Heat pipe is widely used in the radiator manufacturing at present, for example on market, the stem stem of emerging high-power LED phase-change radiator just adopts the gravity assisted heat pipe technology, the application for a patent for invention that can be CN103196116A referring to notification number open " for the modified gravity force heat pipe radiator of great power LED ".
The traditional gravity heat pipe mainly is comprised of shell, end cap and working medium three parts.In gravity assisted heat pipe, the Temperature of Working of evaporation is higher, density is lower, has the trend of moving to gravity in the other direction.And the vapour volume in condensation process diminishes, density uprises, and has to the trend of gravity direction motion.These two groups cold and hot steam flow move toward one another form and liquidate, and therefore in gravity assisted heat pipe, have increased the mixed process of a unnecessary cold and hot steam, and this process can increase the running resistance of cold and hot steam flow, reduces the speed of service of cold and hot steam flow, affects the heat transfer efficiency of heat pipe.
The inner chamber of existing gravity assisted heat pipe is single tubular structure, and the working medium of different conditions according to certain physics law random motion, shares inner chamber in inner chamber, and the convection current conflict produced in motion can't be in harmonious proportion.In the heat pipe course of work, condensable and backflow when steam state working medium is caught a cold lower than condensation temperature.The adopting heat pipes for heat transfer ability is relevant with the temperature difference, thermal capacitance, the circulation rate of working medium, when the working medium condensation, returns, and its temperature difference is less, both has been unfavorable for that the heat carrying also is unfavorable for interfacial heat exchange usefulness, has affected the heat transfer property of heat pipe.The gravity assisted heat pipe draw ratio is larger, and above-mentioned defect is more obvious.
Summary of the invention
The deficiency existed for above-mentioned prior art, one of purpose of the present invention is the moving law according to gravity assisted heat pipe, provide a kind of simple in structure, cheap gravity assisted heat pipe augmentation of heat transfer structure to solve hot and cold air in the gravity assisted heat pipe course of work problem that liquidates, reach the heat transfer efficiency and the performance that promote gravity assisted heat pipe, and then reduce the consumption of material and the energy.
Two of purpose of the present invention is to provide the gravity assisted heat pipe of a kind of better heat transfer efficiency and performance, and it is simple in structure, and handling ease is with low cost.
Three of purpose of the present invention is to provide a kind of great power LED gravity force heat pipe radiator, and gravity assisted heat pipe adopts the augmentation of heat transfer structure, and its heat transfer efficiency is higher, heat transfer property is better.
Four of purpose of the present invention is to provide a kind of computer CPU gravity force heat pipe radiator, and gravity assisted heat pipe adopts the augmentation of heat transfer structure, and its heat transfer efficiency is higher, heat transfer property is better.
To achieve these goals, the technical solution adopted in the present invention is:
A kind of gravity assisted heat pipe augmentation of heat transfer structure, comprise the guide shell that is arranged at the gravity assisted heat pipe inner chamber, the inner rising passway that forms steam state working medium of guide shell, form the decline passway of liquid refrigerant between the inboard tube wall of guide shell lateral wall and gravity assisted heat pipe, the top of guide shell is provided with the air port of rising passway and decline passway conducting, and the bottom of guide shell is provided with the refluxing opening of decline passway and rising passway conducting.
Wherein, the top of described guide shell is provided with the some upper stator be fixedly connected with the gravity assisted heat pipe upper end, form described air port between two adjacent upper stators, the bottom of described guide shell is provided with the some lower stator be fixedly connected with the gravity assisted heat pipe lower end, forms described refluxing opening between two adjacent lower stators.The profile of described guide shell lower surface and the profile of gravity assisted heat pipe bottom surface adapt, and the profile of described guide shell upper surface is less than the profile of gravity assisted heat pipe upper bottom surface.
Preferably, described guide shell is the hyperbola cylinder.
Preferably, described guide shell is cylindrical drum or prism cylinder, and the cross section of guide shell is circle or polygon.
A kind of gravity assisted heat pipe, comprise shell, heat pipe top cover and heat pipe bottom, the heat pipe top cover is positioned at the upper end of shell, the heat pipe bottom is positioned at the lower end of shell, be provided with the working medium that can carry out phase-change heat transfer in shell, be provided with guide shell in described shell, the inner rising passway that forms steam state working medium of guide shell, form the decline passway of liquid refrigerant between the inboard tube wall of guide shell lateral wall and gravity assisted heat pipe, the top of guide shell is provided with the air port of rising passway and decline passway conducting, and the bottom of guide shell is provided with the refluxing opening of decline passway and rising passway conducting.
A kind of great power LED gravity force heat pipe radiator, comprise by shell, the gravity assisted heat pipe that heat pipe top cover and heat pipe bottom form, be laid with some fins on the lateral wall of shell, the heat pipe top cover is positioned at the upper end of shell, the heat pipe bottom is positioned at the lower end of shell, be provided with the working medium that can carry out phase-change heat transfer in shell, be provided with guide shell in described shell, the inner rising passway that forms steam state working medium of guide shell, form the decline passway of liquid refrigerant between the inboard tube wall of guide shell lateral wall and gravity assisted heat pipe, the top of guide shell is provided with the air port of rising passway and decline passway conducting, the bottom of guide shell is provided with the refluxing opening of decline passway and rising passway conducting.
A kind of computer CPU gravity force heat pipe radiator, comprise by shell, the gravity assisted heat pipe that heat pipe top cover and heat pipe bottom form, be laid with some fins on the lateral wall of shell, the heat pipe top cover is positioned at the upper end of shell, the heat pipe bottom is positioned at the lower end of shell, be provided with the working medium that can carry out phase-change heat transfer in shell, be provided with guide shell in described shell, the inner rising passway that forms steam state working medium of guide shell, form the decline passway of liquid refrigerant between the inboard tube wall of guide shell lateral wall and gravity assisted heat pipe, the top of guide shell is provided with the air port of rising passway and decline passway conducting, the bottom of guide shell is provided with the refluxing opening of decline passway and rising passway conducting.
After adopting technique scheme, the advantage that compared to the prior art the present invention had is:
This gravity assisted heat pipe augmentation of heat transfer structure and gravity assisted heat pipe are used in conjunction with, and adopt the heat transfer operation principle of gravity assisted heat pipe of this gravity assisted heat pipe augmentation of heat transfer structure identical with the traditional gravity heat pipe, but heat transfer running difference.Particularly, adopt the gravity assisted heat pipe of this gravity assisted heat pipe augmentation of heat transfer structure, the heat of thermal source raises the heat pipe bottom temperature that is positioned at the gravity assisted heat pipe lower end, when reaching the phase transition temperature of working medium, the part of working medium can produce phase transformation, be that working medium transfers steam state to by liquid state, in the restriction that is subject to the guide shell inwall, the rising passway along guide shell inside moves upward steam state working medium, arrive the heat pipe top cover rear steering of gravity assisted heat pipe upper end, movement outside by from air port to guide shell, when arriving the tube wall of the gravity assisted heat pipe that temperature is lower, steam state working medium is met condensation and is formed liquid refrigerant, liquid refrigerant moves downward along the decline passway between guide shell lateral wall and the inboard tube wall of gravity assisted heat pipe under Action of Gravity Field, arrive the gravity assisted heat pipe bottom, finally by refluxing opening, flow to the inboard of guide shell, above-mentioned running loops.
Steam state working medium evaporation process makes in rising passway and forms malleation, the liquid refrigerant condensation process makes in decline passway and forms negative pressure, thereby the inboard pressure of the air port of guide shell upper end is greater than outside pressure, therefore meeting active steering after steam state working medium arrives the heat pipe top cover of gravity assisted heat pipe upper end.
The profile of the profile of guide shell lower surface and gravity assisted heat pipe bottom surface adapts, effect enters in guide shell while being the evaporation of steam state working medium as much as possible, the profile of guide shell upper surface is less than the profile of gravity assisted heat pipe upper bottom surface, and effect is to be convenient to the heat pipe top cover rear steering motion that steam state working medium arrives the gravity assisted heat pipe upper end.
Form air port between two adjacent upper stators of this gravity assisted heat pipe augmentation of heat transfer structure upper end, between two adjacent lower stators of lower end, form refluxing opening, make this gravity assisted heat pipe augmentation of heat transfer structure more simplify, be convenient to processing, to cut down finished cost.The opening shape of air port and refluxing opening can be the shapes such as circular hole, semicircle, rectangle.The effect of upper stator and lower stator is this gravity assisted heat pipe augmentation of heat transfer structure is fixed in gravity assisted heat pipe.Certainly can only by upper stator or lower stator, be installed.
As preferably, the guide shell of this gravity assisted heat pipe augmentation of heat transfer structure is the hyperbola cylinder, this hyperbola cylinder mechanism can obtain the higher rigidity of structure, avoid the noise that in the Working fluid phase changing process, the steam flow high-speed motion produces, hyperbolic configuration is convenient to form the suitable cross section ratio of lower resistance simultaneously, also be applicable to the steam flow rolling, improve heat exchange efficiency.Certainly guide shell can be also cylindrical drum or prism cylinder, and the cross section of guide shell is circle or polygon.
The structural change of this gravity assisted heat pipe augmentation of heat transfer the steam state working medium condensation path of traditional phase transformation heat pipe, random unordered steam state to the path of liquid condensation process is extended to heat pipe top, then turns back to bottom.Make the heat pipe bottom be subject to the working medium of thermal evaporation can experience longer cooling procedure, condensed temperature is lower, has promoted the heat-transfer capability of heat pipe; After adopting this augmentation of heat transfer structure, (this part conflict is very little to the help of conducting heat with mobile conflict between uncooled steam state working medium still for evaporation working medium, increased on the contrary the steam state working medium resistance of motion) will effectively be alleviated, total steam resistance of motion reduces, and has promoted heat transfer efficiency and the performance of heat pipe.
To sum up, the advantage applies of gravity assisted heat pipe augmentation of heat transfer structure of the present invention exists:
1, this gravity assisted heat pipe augmentation of heat transfer structure provides a half-duplex channel for the cooling overall process of steam state working medium, and the rising steam flow no longer conflicts with the decline steam flow, has improved vapor recycle speed;
2, the average cooling path of steam state working medium extends, and makes the liquid condensation Temperature of Working lower, has promoted the heat energy power of taking of working medium;
3, simple in structure, be easy to adopt punching press or rotary pressing processing to realize this this gravity assisted heat pipe augmentation of heat transfer structure, easy to process, with low cost, be beneficial to the promotion and implementation application.
The advantage applies of gravity assisted heat pipe of the present invention exists: heat transfer efficiency is higher, and heat transfer property is better, can be widely used in various radiators field, promotes the technological innovation in radiator field.
The advantage applies of great power LED gravity force heat pipe radiator of the present invention exists: improve heat transfer efficiency and performance, extend the service life of great power LED.
The advantage applies of computer CPU gravity force heat pipe radiator of the present invention exists: improve heat transfer efficiency and performance, make the computer CPU running temperature lower, move more stable.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described:
Fig. 1: the sectional structure schematic diagram of guide shell of the present invention.
Fig. 2: sectional structure schematic diagram when the present invention and gravity assisted heat pipe are used in conjunction with.
In figure, 1: the heat pipe top cover; 2: upper stator; 3: air port; 4: decline passway; 5: guide shell; 6: liquid refrigerant; 7: rising passway; 8: steam state working medium; 9: refluxing opening; 10: working medium; 11: lower stator; 12: the heat pipe bottom; 13: thermal source.
The specific embodiment
The following stated is only preferred embodiment of the present invention, does not therefore limit protection scope of the present invention.
See shown in Fig. 1 and Fig. 2.
Further, the profile of guide shell 5 lower surfaces and the profile of gravity assisted heat pipe bottom surface adapt, and the profile of guide shell 5 upper surfaces is less than the profile of gravity assisted heat pipe upper bottom surface.
As the scheme of usual replacement, guide shell 5 can also be cylindrical drum or prism cylinder, the rounded or polygon of the cross section of guide shell 5, and the longitudinal section of guide shell 5 is rectangular or trapezoidal.
Claims (8)
1. a gravity assisted heat pipe augmentation of heat transfer structure, it is characterized in that: comprise the guide shell (5) that is arranged at the gravity assisted heat pipe inner chamber, the inner rising passway (7) that forms steam state working medium (8) of guide shell (5), form the decline passway (4) of liquid refrigerant (6) between the inboard tube wall of guide shell (5) lateral wall and gravity assisted heat pipe, the top of guide shell (5) is provided with the air port (3) with decline passway (4) conducting by rising passway (7), and the bottom of guide shell (5) is provided with the refluxing opening (9) with rising passway (7) conducting by decline passway (4).
2. gravity assisted heat pipe augmentation of heat transfer structure according to claim 1, it is characterized in that: the top of described guide shell (5) is provided with the some upper stator (2) be fixedly connected with the gravity assisted heat pipe upper end, form described air port (3) between two adjacent upper stators (2), the bottom of described guide shell (5) is provided with the some lower stator (11) be fixedly connected with the gravity assisted heat pipe lower end, forms described refluxing opening (9) between two adjacent lower stators (11).
3. gravity assisted heat pipe augmentation of heat transfer structure according to claim 1, it is characterized in that: described guide shell (5) is the hyperbola cylinder.
4. gravity assisted heat pipe augmentation of heat transfer structure according to claim 1, it is characterized in that: described guide shell (5) is cylindrical drum or prism cylinder, and the cross section of guide shell (5) is circle or polygon.
5. gravity assisted heat pipe augmentation of heat transfer structure according to claim 1, it is characterized in that: the profile of described guide shell (5) lower surface and the profile of gravity assisted heat pipe bottom surface adapt, and the profile of described guide shell (5) upper surface is less than the profile of gravity assisted heat pipe upper bottom surface.
6. a gravity assisted heat pipe, it is characterized in that: comprise shell, heat pipe top cover (1) and heat pipe bottom (12), heat pipe top cover (1) is positioned at the upper end of shell, heat pipe bottom (12) is positioned at the lower end of shell, be provided with the working medium (10) that can carry out phase-change heat transfer in shell, be provided with gravity assisted heat pipe augmentation of heat transfer structure as described as claim 1 to 5 any one in described shell.
7. a great power LED gravity force heat pipe radiator that adopts gravity assisted heat pipe as claimed in claim 6, is characterized in that: be laid with some fins on the lateral wall of the shell of described gravity assisted heat pipe.
8. a computer CPU gravity force heat pipe radiator that adopts gravity assisted heat pipe as claimed in claim 6, is characterized in that: be laid with some fins on the lateral wall of the shell of described gravity assisted heat pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103538613A CN103453791A (en) | 2013-08-14 | 2013-08-14 | Gravity assisted heat pipe enhanced heat transfer structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013103538613A CN103453791A (en) | 2013-08-14 | 2013-08-14 | Gravity assisted heat pipe enhanced heat transfer structure |
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| CN103453791A true CN103453791A (en) | 2013-12-18 |
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| CN2013103538613A Pending CN103453791A (en) | 2013-08-14 | 2013-08-14 | Gravity assisted heat pipe enhanced heat transfer structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712111A (en) * | 2014-01-10 | 2014-04-09 | 广州大学 | LED lamp based on anti-gravity radiating |
| CN108291707A (en) * | 2015-11-19 | 2018-07-17 | 飞利浦照明控股有限公司 | Lamp |
| CN111551058A (en) * | 2020-05-09 | 2020-08-18 | 上海交通大学 | Ultra-long gravity heat pipe with enhanced carrying limit |
| CN112985132A (en) * | 2021-03-05 | 2021-06-18 | 太原理工大学 | Gravity heat pipe device for Stirling power generation and forced convection heat dissipation |
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| CN1580684A (en) * | 2003-08-06 | 2005-02-16 | 亚诺超导科技股份有限公司 | Vapour-liquid separating heat excharge system |
| CN101236054A (en) * | 2008-03-05 | 2008-08-06 | 山东大学 | Integrated type internal circulation hot pipe |
| CN201463672U (en) * | 2009-06-06 | 2010-05-12 | 李蓄 | Built-in pipe type gravity heat pipe with improved structure |
| CN203534295U (en) * | 2013-08-14 | 2014-04-09 | 奉化市垭特机电科技有限公司 | Heat transfer enhancing structure for gravity heat pipe |
-
2013
- 2013-08-14 CN CN2013103538613A patent/CN103453791A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1580684A (en) * | 2003-08-06 | 2005-02-16 | 亚诺超导科技股份有限公司 | Vapour-liquid separating heat excharge system |
| CN101236054A (en) * | 2008-03-05 | 2008-08-06 | 山东大学 | Integrated type internal circulation hot pipe |
| CN201463672U (en) * | 2009-06-06 | 2010-05-12 | 李蓄 | Built-in pipe type gravity heat pipe with improved structure |
| CN203534295U (en) * | 2013-08-14 | 2014-04-09 | 奉化市垭特机电科技有限公司 | Heat transfer enhancing structure for gravity heat pipe |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712111A (en) * | 2014-01-10 | 2014-04-09 | 广州大学 | LED lamp based on anti-gravity radiating |
| CN108291707A (en) * | 2015-11-19 | 2018-07-17 | 飞利浦照明控股有限公司 | Lamp |
| CN111551058A (en) * | 2020-05-09 | 2020-08-18 | 上海交通大学 | Ultra-long gravity heat pipe with enhanced carrying limit |
| CN111551058B (en) * | 2020-05-09 | 2021-07-30 | 上海交通大学 | Ultra-long gravity heat pipe with enhanced carrying limit |
| CN112985132A (en) * | 2021-03-05 | 2021-06-18 | 太原理工大学 | Gravity heat pipe device for Stirling power generation and forced convection heat dissipation |
| CN112985132B (en) * | 2021-03-05 | 2022-10-25 | 太原理工大学 | Gravity heat pipe device for Stirling power generation and forced convection heat dissipation |
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