CN102829664A - Natural convection cooling structure and method thereof - Google Patents
Natural convection cooling structure and method thereof Download PDFInfo
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- CN102829664A CN102829664A CN2012103700073A CN201210370007A CN102829664A CN 102829664 A CN102829664 A CN 102829664A CN 2012103700073 A CN2012103700073 A CN 2012103700073A CN 201210370007 A CN201210370007 A CN 201210370007A CN 102829664 A CN102829664 A CN 102829664A
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Abstract
The invention discloses a natural convection cooling structure and a method thereof. The structure specifically comprises a shell and fins, wherein the shell comprises an inner wall and an outer wall; the shell is internally provided with more than two fins arranged a side by side manner, and each fin is of a gradually changing section structure; two ends of the shell are provided with openings, and a tubular air channel of a gradually changing section structure is formed among the fins; when a heat source contacts a partial region which is of a natural convection cooling structure, and the heat is conducted to the shell which is of a natural convection cooling structure; and the inner wall and the outer wall of the natural convection cooling structure exchange with the contacted air, the air in the tubular air channel among the fins are heated to rise, the cold air in the lower part of the tubular air channel comes in continuously so as to take heat away. The natural convection cooling structure and the method thereof provided by the invention can obviously improve the cooling ability of the natural convection radiator currently; under the condition of the same cooling ability, the natural convection cooling structure needs less materials, smaller in size and can keep lower cost and higher reliability.
Description
Technical field
The present invention relates to a kind of radiator structure and method thereof, especially relate to and a kind ofly adopt the radiator structure of free convection mode and its method of dispelling the heat.
Background technology
Natural Heat Convection is meant under the effect that does not have external mechanical force, only leans on the fluid internal temperature poor, thereby and the heat transfer phenomenon that makes the mobile generation of fluid is called as Natural Heat Convection.And dynamic pressure is meant object when doing relative fluid motion, and on the direction surface over against fluid, fluid is obstructed fully; Fluid velocity is zero here, and its kinetic energy changes the pressure ability into, and pressure increases; Its pressure becomes the pressure that is obstructed entirely, and the pressure at it and undisturbed place poor is called dynamic pressure.
The Natural Heat Convection mode is modal radiating mode, and its radiating principle is to utilize to produce the heat that convective zone is walked thermal source when air is cold and hot to be changed.The Natural Heat Convection mode is as a kind of widely used radiating mode, has simple in structurely, and reliability is high, and cost is low, the lower characteristics of heat radiation density.
In the approximation technique scheme of prior art, the pressure differential of utilizing chimney structure to strengthen cold and hot air is arranged, strengthen convection current, improve the scheme of heat-sinking capability.But present Natural Heat Convection mode exists inefficient defective, and the forced air cooling mode exists the technological deficiency that cost is higher, reliability is low.Simultaneously, under the situation of identical heat-sinking capability, contrast, prior art often all needs more materials and bigger volume.
Summary of the invention
The purpose of this invention is to provide a kind of Natural Heat Convection structure and method thereof; This structure and method thereof can obviously improve present Natural Heat Convection device heat-sinking capability, and under the situation of identical heat-sinking capability, required material still less; Volume is littler, can keep lower cost and higher reliability.
In order to realize the foregoing invention purpose, the present invention specifically provides a kind of technic relization scheme of Natural Heat Convection structure, and a kind of Natural Heat Convection structure comprises: shell and fin, shell comprises inner and outer wall.Be arranged side by side the fin more than two in the inside of shell, fin adopts the structure in gradual change cross section.The both ends open of shell; Form the tubulose air duct of gradual change cross section structure between the fin; The regional area of thermal source contact nature heat loss through convection structure conducts heat to the shell of Natural Heat Convection structure, the inwall of Natural Heat Convection structure, outer wall and the air generation heat exchange that touches; The rising of being heated of air between the fin in the tubulose air duct, the cold air of tubulose air duct bottom constantly replenishes into takes away heat.
Further improvement as a kind of Natural Heat Convection structure technology of the present invention scheme; The sectional area at fin middle part is greater than the sectional area at two ends, and to the middle part, the sectional area of fin diminishes gradually from an end of fin; Again to the other end, it is big that the sectional area of fin becomes gradually from the middle part of fin.The air entering part of tubulose air duct increases effective inlet area between fin, increases to flow into air capacity; Sectional area through control tubulose air duct changes the dynamic pressure of minimizing intake air, thereby reduces the inlet resistance.The air outlet slit of tubulose air duct partly increases effective inlet area between fin, reduces the outlet pressure loss, thereby reduces resistance to flow output, enlarges effective outlet, increases air actual flow output, and natural converging with ambient atmosphere.
As the further improvement of a kind of Natural Heat Convection structure technology of the present invention scheme, the inwall of the top board of shell adopts the structure in gradual change cross section, and the sectional area at top board middle part is greater than the sectional area at two ends.
As the further improvement of a kind of Natural Heat Convection structure technology of the present invention scheme, the inwall of the base plate of shell adopts the structure in gradual change cross section, and the sectional area at base plate middle part is greater than the sectional area at two ends.
As the further improvement of a kind of Natural Heat Convection structure technology of the present invention scheme, the inwall of the side plate of shell adopts the structure in gradual change cross section, and the sectional area at side plate middle part is greater than the sectional area at two ends.
As the further improvement of a kind of Natural Heat Convection structure technology of the present invention scheme, it is ellipse or parabola or the oval curved-surface structure that adds rectangle that the fin of Natural Heat Convection structure adopts the gradual change cross section.
As the further improvement of a kind of Natural Heat Convection structure technology of the present invention scheme, the shell of Natural Heat Convection structure and fin adopt the aluminum alloy materials of high thermal conductivity coefficient to process.
The present invention also specifically provides a kind of technic relization scheme of Natural Heat Convection method in addition; A kind of Natural Heat Convection method; Enclosure in the Natural Heat Convection structure is arranged side by side the fin more than two; Shell and fin all adopt the high thermal conductivity coefficient material to process, and make formation tubulose air duct structure arranged side by side between shell and the fin.Fin adopts the structure in gradual change cross section, and the sectional area at fin middle part is greater than the sectional area at two ends.When thermal source touches the regional area of shell of Natural Heat Convection structure; Heat conducts to the shell of Natural Heat Convection structure; The inner and outer wall of shell and the air generation heat exchange that touches; Air risings of being heated in the tubulose air duct, the cold air of tubulose air duct bottom constantly replenish into the tubulose air duct of Natural Heat Convection structure and take away heat, thus the realization Natural Heat Convection.
As the further improvement of a kind of Natural Heat Convection method and technology of the present invention scheme, the air entering part of tubulose air duct increases effective inlet area between fin, increases to flow into air capacity.Sectional area through control tubulose air duct changes the dynamic pressure of minimizing intake air, thereby reduces the inlet resistance.The air outlet slit of tubulose air duct partly increases effective inlet area between fin, reduces the outlet pressure loss, thereby reduces resistance to flow output, enlarges effective outlet, increases air actual flow output, and natural converging with ambient atmosphere.
As the further improvement of a kind of Natural Heat Convection method and technology of the present invention scheme, the process that the Natural Heat Convection method comprises also that to adopt the gradual change cross section be ellipse or parabola or the oval curved-surface structure that adds rectangle the fin of Natural Heat Convection structure is designed.
Through implementing the technical scheme of a kind of Natural Heat Convection structure of the invention described above and method thereof, can reach following technique effect:
(1) the present invention adopts material less, thereby under the bigger situation of amount, has cost advantage;
(2) volume of the present invention is less, be fit to use to the conditional occasion in space;
(3) weight of the present invention is lighter, and these pursue suitable locomotive etc. on the lower weight vehicles;
(4) heat-sinking capability of the present invention is stronger, and reliability is higher, and it is bigger to be fit to be applied in caloric value, the occasion that reliability requirement is higher.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the air flow sketch map of a kind of specific embodiment of Natural Heat Convection structure of the present invention;
Fig. 2 is the internal structure sketch map of a kind of specific embodiment of Natural Heat Convection structure of the present invention;
Fig. 3 is that the heat of a kind of specific embodiment of Natural Heat Convection structure of the present invention transmits sketch map;
Fig. 4 is structural representation Fig. 1 of single tubulose air duct in a kind of specific embodiment of Natural Heat Convection structure of the present invention;
Fig. 5 is structural representation Fig. 2 of single tubulose air duct in a kind of specific embodiment of Natural Heat Convection structure of the present invention;
Fig. 6 is the structural representation of tubulose air duct in a kind of specific embodiment of Natural Heat Convection structure of the present invention;
Fig. 7 is the structural representation of a kind of specific embodiment fin of Natural Heat Convection structure of the present invention;
Among the figure: 1-shell, 2-fin, 3-inwall, 4-outer wall, 5-air duct, 6-top board, 7-base plate, 8-side plate.
The specific embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Shown in accompanying drawing 1 to accompanying drawing 7, provided the specific embodiment of a kind of Natural Heat Convection structure of the present invention and method thereof, below in conjunction with accompanying drawing and specific embodiment the present invention is described further.
Like the specific embodiment of accompanying drawing 1 with a kind of Natural Heat Convection structure shown in the accompanying drawing 2, comprising: shell 1 and fin 2, shell 1 comprise inwall 3 and outer wall 4, are arranged side by side the fin 2 more than two in the inside of shell 1.Fin 2 adopts the structure in gradual change cross section.Wherein, the shell 1 of Natural Heat Convection structure adopts the aluminum alloy materials of high thermal conductivity coefficient to process with fin 2.The both ends open of shell 1 forms the tubulose air duct of gradual change cross section structure between the fin 2, the regional area of thermal source contact nature heat loss through convection structure conducts heat to the shell 1 of Natural Heat Convection structure.The inwall 3 of Natural Heat Convection structure, outer wall 4 and the air generation heat exchange that touches, the air between the fin 2 in the tubulose air duct rising of being heated, the cold air of tubulose air duct bottom constantly replenishes into takes away heat.
With shown in the accompanying drawing 4, fin 2 adopts the structure in gradual change cross section like accompanying drawing 2, and the sectional area at fin 2 middle parts is greater than the sectional area at two ends.To the middle part, the sectional area of fin 2 diminishes gradually from an end of fin 2, and again to the other end, it is big that the sectional area of fin 2 becomes gradually from the middle part of fin 2.The air entering part of tubulose air duct increases effective inlet area between fin 2, increases to flow into air capacity.Sectional area through control tubulose air duct changes the dynamic pressure of minimizing intake air, thereby reduces the inlet resistance.The air outlet slit of tubulose air duct partly increases effective inlet area between fin 2, reduces the outlet pressure loss, thereby reduces resistance to flow output, enlarges effective outlet, increases air actual flow output, and natural converging with ambient atmosphere.
As a kind of embodiment that is more preferably, shown in accompanying drawing 5, the inwall of the top board 6 of shell 1 also further adopts the structure in gradual change cross section, and the sectional area at top board 6 middle parts is greater than the sectional area at two ends.The inwall of the base plate 7 of shell 1 also further adopts the structure in gradual change cross section, and the sectional area at base plate 7 middle parts is greater than the sectional area at two ends.Shown in accompanying drawing 6, the inwall of the side plate 8 of shell 1 also further adopts the structure in gradual change cross section, and the sectional area at side plate 8 middle parts is greater than the sectional area at two ends.
As a kind of embodiment that is more preferably, it is ellipse or parabola or the oval curved-surface structure that adds rectangle that the fin 2 of Natural Heat Convection structure further adopts the gradual change cross section.Shown in accompanying drawing 7, the gradual change cross section that fin 2 adopts is the compound cross-section structure that the half elliptic structure of both sides B section adds the rectangular configuration of middle part A section.Such design is different from common finned radiator, can obtain the air duct of a low flow resistance, and under the equal volume situation, can obtain bigger area of dissipation, and processing and making process is also very simple simultaneously.
The specific embodiment of a kind of Natural Heat Convection method shown in accompanying drawing 3 is arranged side by side the fin 2 more than two in shell 1 inside of Natural Heat Convection structure.Wherein, shell 1 all adopts the high thermal conductivity coefficient material to process with fin 2, makes formation tubulose air duct structure arranged side by side between shell 1 and the fin 2.Fin 2 further adopts the structure in gradual change cross section, and the sectional area at fin 2 middle parts is greater than the sectional area at two ends.When thermal source touched the regional area of shell 1 of Natural Heat Convection structure, heat conducted to the shell 1 of Natural Heat Convection structure.The inwall 3 of shell 1 and outer wall 4 and the air generation heat exchange that touches; The air rising of being heated in the tubulose air duct; The cold air of tubulose air duct bottom constantly replenishes into the tubulose air duct of Natural Heat Convection structure and takes away heat, thereby realizes Natural Heat Convection.
The air entering part of tubulose air duct increases effective inlet area between fin 2, can increase the inflow air capacity.Sectional area through control tubulose air duct changes the dynamic pressure of minimizing intake air, thereby reduces the inlet resistance.The air outlet slit of tubulose air duct partly increases effective inlet area between fin 2, reduces the outlet pressure loss, thereby reduces resistance to flow output, enlarges effective outlet, increases air actual flow output, and natural converging with ambient atmosphere.The process that the Natural Heat Convection method comprises further also that to adopt the gradual change cross section be ellipse or parabola or the oval curved-surface structure that adds rectangle the fin 2 of Natural Heat Convection structure is designed.
On the one hand, the present invention adopts the high thermal conductivity coefficient material to process tubular conduit structure arranged side by side.Regional area when this structure of thermal source contact; Conduct heat to this structure, the inside and outside wall of this structure and the air generation heat exchange that touches at last, the air rising of being heated in the passage; Passage bottom cold air constantly replenishes into takes away heat, thereby reaches the purpose of heat radiation.This compares with the Section Bar Heat Sinks of routine, and this structure has bigger area of dissipation under the situation of equal volume, is more conducive to heat radiation.
On the other hand, the present invention adopts gradual change cross section tubular air duct, increases the inflow air capacity thereby increase effective inlet area in the air entering part.Reduce intake air dynamic pressure minimizing inlet resistance through the control changes of section.Equally, also adopt similar measure at outlet section and reduce outlet pressure and lose and reduce resistance to flow output, enlarge effective outlet, increase air actual flow output, and the converging with ambient atmosphere of nature.And tubulose air duct structure is beneficial to the desirable cold and hot concurrent condition of formation channel interior.Adopt the tubulose air duct of cross section gradual change, effectively reduce air drag, increased area of dissipation, strengthened heat-sinking capability.
Simultaneously, the present invention adopts material less, thereby under the bigger situation of amount, has cost advantage.Volume is less, be fit to use to the conditional occasion in space.Weight is lighter, and these pursue suitable locomotive etc. on the lower weight vehicles.Heat-sinking capability is stronger, and reliability is higher, and it is bigger to be suitable for use in caloric value, the occasion that reliability requirement is higher.Can obviously improve present Natural Heat Convection device heat-sinking capability, and keep the lower higher reliability height of cost.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction.Though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention.Any those of ordinary skill in the art; Do not breaking away under the technical scheme scope situation of the present invention; All the method for above-mentioned announcement capable of using and technology contents are made many possible changes and modification to technical scheme of the present invention, or are revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical scheme of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, be equal to replacement, equivalence changes and modify, all still belong in the scope that technical scheme of the present invention protects.
Claims (10)
1. Natural Heat Convection structure; It is characterized in that; Comprise: shell (1) and fin (2); Said shell (1) comprises inwall (3) and outer wall (4), is arranged side by side the fin (2) more than two in the inside of said shell (1), and said fin (2) adopts the structure in gradual change cross section; The both ends open of shell (1); Form the tubulose air duct of gradual change cross section structure between the fin (2); The regional area of thermal source contact nature heat loss through convection structure conducts heat to the shell (1) of Natural Heat Convection structure, the inwall of Natural Heat Convection structure (3), outer wall (4) and the air generation heat exchange that touches; The rising of being heated of air between the fin (2) in the tubulose air duct, the cold air of tubulose air duct bottom constantly replenishes into takes away heat.
2. a kind of Natural Heat Convection structure according to claim 1; It is characterized in that: the sectional area at said fin (2) middle part is greater than the sectional area at two ends; From an end of fin (2) to the middle part; The sectional area of fin (2) diminishes gradually, and again to the other end, the sectional area of fin (2) becomes big gradually from the middle part of fin (2); The air entering part of tubulose air duct increases effective inlet area between said fin (2), increases to flow into air capacity; Sectional area through control tubulose air duct changes the dynamic pressure of minimizing intake air, thereby reduces the inlet resistance; The air outlet slit of tubulose air duct partly increases effective inlet area between said fin (2), reduces the outlet pressure loss, thereby reduces resistance to flow output, enlarges effective outlet, increases air actual flow output, and natural converging with ambient atmosphere.
3. a kind of Natural Heat Convection structure according to claim 1 and 2 is characterized in that: the inwall of the top board (6) of said shell (1) adopts the structure in gradual change cross section, and the sectional area at said top board (6) middle part is greater than the sectional area at two ends.
4. a kind of Natural Heat Convection structure according to claim 3 is characterized in that: the inwall of the base plate (7) of said shell (1) adopts the structure in gradual change cross section, and the sectional area at said base plate (7) middle part is greater than the sectional area at two ends.
5. a kind of Natural Heat Convection structure according to claim 4 is characterized in that: the inwall of the side plate (8) of said shell (1) adopts the structure in gradual change cross section, and the sectional area at said side plate (8) middle part is greater than the sectional area at two ends.
6. according to the described a kind of Natural Heat Convection structure of arbitrary claim in the claim 1,2,4,5, it is characterized in that: it is ellipse or parabola or the oval curved-surface structure that adds rectangle that the fin of said Natural Heat Convection structure (2) adopts the gradual change cross section.
7. a kind of Natural Heat Convection structure according to claim 6 is characterized in that: shell of said Natural Heat Convection structure (1) and fin (2) adopt the aluminum alloy materials of high thermal conductivity coefficient to process.
8. Natural Heat Convection method; It is characterized in that: shell (1) inside in the Natural Heat Convection structure is arranged side by side the fin (2) more than two; Shell (1) and fin (2) all adopt the high thermal conductivity coefficient material to process, and make formation tubulose air duct structure arranged side by side between shell (1) and the fin (2); Fin (2) adopts the structure in gradual change cross section, and the sectional area at fin (2) middle part is greater than the sectional area at two ends; When thermal source touches the regional area of shell (1) of Natural Heat Convection structure; Heat conducts to the shell (1) of Natural Heat Convection structure; The inwall (3) of shell (1) and outer wall (4) and the air generation heat exchange that touches; Air risings of being heated in the tubulose air duct, the cold air of tubulose air duct bottom constantly replenish into the tubulose air duct of Natural Heat Convection structure and take away heat, thus the realization Natural Heat Convection.
9. a kind of Natural Heat Convection method according to claim 8 is characterized in that: the air entering part of tubulose air duct increases effective inlet area between said fin (2), increases to flow into air capacity; Sectional area through control tubulose air duct changes the dynamic pressure of minimizing intake air, thereby reduces the inlet resistance; The air outlet slit of tubulose air duct partly increases effective inlet area between said fin (2), reduces the outlet pressure loss, thereby reduces resistance to flow output, enlarges effective outlet, increases air actual flow output, and natural converging with ambient atmosphere.
10. a kind of Natural Heat Convection method according to claim 9 is characterized in that: the process that said Natural Heat Convection method comprises also that to adopt the gradual change cross section be ellipse or parabola or the oval curved-surface structure that adds rectangle the fin (2) of Natural Heat Convection structure is designed.
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| CN201210370007.3A CN102829664B (en) | 2012-09-29 | 2012-09-29 | Natural convection cooling structure and method thereof |
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| CN201210370007.3A CN102829664B (en) | 2012-09-29 | 2012-09-29 | Natural convection cooling structure and method thereof |
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| CN102829664B CN102829664B (en) | 2014-06-18 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107887132A (en) * | 2017-12-18 | 2018-04-06 | 四川电力设计咨询有限责任公司 | A kind of hyperbolic-type oil-filled transformer fin |
| CN108131222A (en) * | 2018-01-25 | 2018-06-08 | 凯龙高科技股份有限公司 | A kind of heat exchanger structure of vehicle fuel heater |
| CN108934152A (en) * | 2018-07-28 | 2018-12-04 | 西安交通大学 | A kind of heat exchange strengthening device and its design method of Natural Heat Convection |
| US11512910B2 (en) | 2020-10-28 | 2022-11-29 | National Tsing Hua University | Heat dissipation device |
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| CN2073104U (en) * | 1990-06-07 | 1991-03-13 | 宜兴市钮家耐火电瓷厂 | Heat exchanger |
| JPH08139480A (en) * | 1994-11-08 | 1996-05-31 | Mitsubishi Materials Corp | Heat-dissipative ceramic board having heat pipe structure |
| CN201828177U (en) * | 2010-09-29 | 2011-05-11 | 浙江金宸三普换热器有限公司 | Flat pipe and fin structure of parallel flow heat exchanger |
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2012
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2073104U (en) * | 1990-06-07 | 1991-03-13 | 宜兴市钮家耐火电瓷厂 | Heat exchanger |
| JPH08139480A (en) * | 1994-11-08 | 1996-05-31 | Mitsubishi Materials Corp | Heat-dissipative ceramic board having heat pipe structure |
| CN201828177U (en) * | 2010-09-29 | 2011-05-11 | 浙江金宸三普换热器有限公司 | Flat pipe and fin structure of parallel flow heat exchanger |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107887132A (en) * | 2017-12-18 | 2018-04-06 | 四川电力设计咨询有限责任公司 | A kind of hyperbolic-type oil-filled transformer fin |
| CN108131222A (en) * | 2018-01-25 | 2018-06-08 | 凯龙高科技股份有限公司 | A kind of heat exchanger structure of vehicle fuel heater |
| CN108934152A (en) * | 2018-07-28 | 2018-12-04 | 西安交通大学 | A kind of heat exchange strengthening device and its design method of Natural Heat Convection |
| US11512910B2 (en) | 2020-10-28 | 2022-11-29 | National Tsing Hua University | Heat dissipation device |
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|---|---|
| CN102829664B (en) | 2014-06-18 |
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Application publication date: 20121219 Assignee: Hunan CSR special electric equipment Co., Ltd. Assignor: CSR Zhuzou Electric Locomotive Research Institute Co., Ltd. Contract record no.: 2015430000134 Denomination of invention: Natural convection cooling structure and method thereof Granted publication date: 20140618 License type: Exclusive License Record date: 20150831 |
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