CN204649044U - A kind of follow-on ultra-thin loop circuit heat pipe - Google Patents
A kind of follow-on ultra-thin loop circuit heat pipe Download PDFInfo
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- CN204649044U CN204649044U CN201520323902.9U CN201520323902U CN204649044U CN 204649044 U CN204649044 U CN 204649044U CN 201520323902 U CN201520323902 U CN 201520323902U CN 204649044 U CN204649044 U CN 204649044U
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Abstract
The utility model discloses a kind of follow-on ultra-thin loop circuit heat pipe, comprise metal substrate, metal cover board and bend pipe, described metal substrate is provided with groove, the edge of described metal substrate is connected with the edge seal of metal cover board, described metal cover board covers groove, be provided with passage in described groove, the two ends of described metal substrate are respectively equipped with all communicate with groove the first connected entrance and the second connected entrance, and the two ends of described bend pipe are connected to the first connected entrance and the second connected entrance; Described passage parallelogram, the top of described passage is provided with the vapour pond of width gradual change, and the below of described passage is provided with the liquid pool of width gradual change; Described vapour pond is connected by passage with liquid pool.The utility model effectively can intercept the recoil of steam state working medium, reduces the unstability of two-phase flow, and loop heat can be started more fast, and start-up temperature is lower, during operation, the fluctuation of temperature and pressure is less, and the operation thermal resistance of system is lower, and operating efficiency is higher.
Description
Technical field
The utility model relates to heat-transfer equipment technology, is specifically related to a kind of follow-on ultra-thin loop circuit heat pipe.
Background technology
Along with the fast development of the industries such as electric automobile, electron trade, aerospace and equipment manufacture industry, the requirement of modern industry to heat radiation is also more and more higher.In recent years, due to the birth of high heat flux element, equipment etc., traditional wind-cooling heat dissipating has reached the heat radiation limit and far can not meet cooling requirements, liquid-cooling heat radiation also because its cost is high, system complex and have the shortcomings such as seepage to be always difficult to be generalizable.Loop circuit heat pipe, as the efficient phase change heat-transfer device of one, mainly through two phase change transferring heats of heat-transfer working medium, cooling system seems more and more important.At present, loop type gravity assisted heat pipe, pulsating heat pipe or sintered heat pipe are generally adopted to the cooling heat source in electric automobile, electron trade, aerospace and equipment manufacture industry etc.
But traditional loop circuit heat pipe also exists following defect: 1, the evaporation part of heat pipe mostly is circular tube shaped, the contact area of itself and thermal source is few, and radiating effect is poor; 2, use the capillary structure of sintering in heat pipe, this resistance causing working medium to run into is comparatively large, and cannot start rapidly, radiating efficiency is low; 3, heat pipe needs to pipe packing material sintering capillary structure, this complex structure, and processing is inconvenient, and weight is larger; 4, heat pipe mostly is round tube, and this causes the laminating degree of heat pipe and thermal source not high, and installs inconvenient; 5, same heat pipe is only applicable to electric automobile or electron trade or aerospace, cannot meet the demand of the industries such as electric automobile, electron trade, aerospace and equipment manufacture industry simultaneously, therefore the poor universality of heat pipe, the scope of application is little.
For solving the problem, the applicant has applied for that (application number is patent of invention: 201410366297.3) disclose a kind of ultra-thin lightweight loop circuit heat pipe.Though this patent of invention is to a certain degree solving above-mentioned problem, also there are some other defects in it, and as the flowing instability of the vehicle repair major of working medium, during operation, the fluctuation of temperature and pressure is comparatively large, and it is higher to run thermal resistance.
Utility model content
The purpose of this utility model is the deficiency existed to overcome above prior art, and provide a kind of two-phase flow and stablize, capable of fast starting, the fluctuation of running temperature and pressure is little, and it is low to run thermal resistance, the follow-on ultra-thin loop circuit heat pipe that operating efficiency is high.
The purpose of this utility model is realized by following technical scheme: this follow-on ultra-thin loop circuit heat pipe, comprise metal substrate, metal cover board and bend pipe, described metal substrate is provided with groove, the edge of described metal substrate is connected with the edge seal of metal cover board, described metal cover board covers groove, be provided with in described groove and there is capillary passage, the two ends of described metal substrate are respectively equipped with the first connected entrance and the second connected entrance, described first connected entrance and the second connected entrance all communicate with groove, the two ends of described bend pipe are connected to the first connected entrance and the second connected entrance, described passage parallelogram, the top of described passage is provided with the vapour pond of width gradual change, and the below of described passage is provided with the liquid pool of width gradual change, described vapour pond is connected by passage with liquid pool.
Preferably, described first connected entrance is positioned at the upper right side of metal substrate, and described second connected entrance is positioned at the lower-left end of metal substrate.
Preferably, the width of described liquid pool reduces gradually along the horizontal direction away from the second connected entrance; The width in described vapour pond reduces gradually along the horizontal direction away from the first connected entrance.
Preferably, described passage comprises multiple conduit and multiple projection, the distribution and multiple described conduit and multiple projection are alternately arranged successively, simultaneously the distribution parallelogram of multiple described conduit and multiple projection.
Preferably, the groove width of described conduit is 1mm ~ 5mm, and the groove depth of described conduit is 0.4mm ~ 0.8mm; The width of described projection is 1mm ~ 5mm.
Preferably, the end face of described projection upper end and the angle of horizontal plane are 3 ° ~ 5 °.
Preferably, described metal substrate and metal cover board are all rectangular.
Preferably, described groove is rectangular.
Preferably, described follow-on ultra-thin loop circuit heat pipe also comprises fin component, and described fin component comprises fin base and fin, and described fin is all fixed on a side of fin base, and the another side of described fin base is connected with bend pipe.
Preferably, the another side of described fin base is provided with mounting groove, and described bend pipe embeds mounting groove, and is fixed by screw locking.
The utility model has following advantage relative to prior art:
1, passage parallelogram structure in this follow-on ultra-thin loop circuit heat pipe, and the top of passage is provided with the vapour pond of width gradual change, this forms extra pressure differential, thus promote the Working fluid flow of steam state, accelerate steam state working medium flash-pot outlet (i.e. the first connected entrance) and flow out and complete circulation; Be positioned at below and the liquid pool of width gradual change simultaneously, it has larger volume, this effectively intercepts the recoil of steam state working medium, reduces the unstability of two-phase flow, namely inhibits the recoil of steam state working medium, also system is avoided to leak heat, loop heat can be started more fast, and start-up temperature is lower, during operation, the fluctuation of temperature and pressure is less, the operation thermal resistance of system is lower, and operating efficiency is higher.
The structure of the passage 2, in this follow-on ultra-thin loop circuit heat pipe is simpler, only need to adopt milling machine processing, do not need to carry out filling as traditional heat pipe, the operation such as sintering, this manufacturing procedure is few, simple, reduce manufacturing cost, also there is lightweight feature simultaneously, meet light-weighted demand for development.
3, this follow-on ultra-thin loop circuit heat pipe has compact efficient, energy-saving and environmental protection, structure is simple, cost is low, volume is little, easy for installation, the stable and feature such as reliable, and can the industry such as electric automobile, electron trade, aerospace and equipment manufacture industry, the scope of application is wide, has wide market prospects.
Accompanying drawing explanation
Fig. 1 is the structural representation of follow-on ultra-thin loop circuit heat pipe of the present utility model.
The partial enlarged drawing at A place in Fig. 2 Fig. 1.
Fig. 3 is the partial schematic diagram that the utility model metal substrate looks up direction.
Fig. 4 is the structural representation of the utility model fin component.
Fig. 5 be the applicant before application for a patent for invention (application number is 201410366297.3) and the comparison diagram of mean temperature of ultra-thin loop circuit heat pipe in the utility model.
Fig. 6 be the applicant before application for a patent for invention (application number is 201410366297.3) and the comparison diagram of ultra-thin loop circuit heat pipe of the present utility model thermal resistance when running.
Fig. 7 be the applicant before application for a patent for invention (application number is 201410366297.3) and the comparison diagram of startup phenomenon of ultra-thin loop circuit heat pipe in the utility model.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Follow-on ultra-thin loop circuit heat pipe as shown in Figure 1 to Figure 3, comprise metal substrate 1, metal cover board and bend pipe 2, described metal substrate 1 is provided with groove 3, the described edge of metal substrate 1 is connected with the edge seal of metal cover board, described metal cover board covers groove 3, be provided with in described groove 3 and there is capillary passage 4, the two ends of described metal substrate 1 are respectively equipped with the first connected entrance 5 and the second connected entrance 6, described first connected entrance 5 and the second connected entrance 6 all communicate with groove 3, and the two ends of described bend pipe 2 are connected to the first connected entrance 5 and the second connected entrance 6; Described passage 4 parallelogram, the top of described passage 4 is provided with the vapour pond 7 of width gradual change, and the below of described passage is provided with the liquid pool 8 of width gradual change; Described vapour pond 7 is connected by passage 4 with liquid pool 8.Described first connected entrance 5 is positioned at the upper right side of metal substrate 1, and described second connected entrance 6 is positioned at the lower-left end of metal substrate 1.The width of described liquid pool 8 reduces gradually along the horizontal direction away from the second connected entrance 6; The width in described vapour pond 7 reduces gradually along the horizontal direction away from the first connected entrance 5.The width being positioned at the vapour pond 7 above passage 3 reduces gradually along the horizontal direction away from the first connected entrance 5, and this mineralization pressure is poor, thus promotes the flowing of steam state working medium, can accelerate working medium in the outflow of the first connected entrance 5 to have worn choosing and circulate.And the liquid pool 8 be positioned at below passage 3 is for liquid storage, effectively can intercepts the recoil of steam state working medium, reduce the unstability of two-phase flow.
Concrete, after metal cover board covers groove 3, metal cover board and metal substrate 1 make groove 3 opposing seal, thus form the evaporimeter that has evaporation cavity.There is the centre that capillary passage 4 is positioned at evaporation cavity.And the upper right side of metal substrate 1, be namely provided with the liquid injection port 9 for injecting working medium near the first connected entrance 5 place.Because the evaporation cavity in this follow-on ultra-thin loop circuit heat pipe forms primarily of metal substrate, groove and metal cover board, this makes evaporation cavity be platy structure, add the fitting area between evaporation cavity and thermal source, greatly reduce thermal contact resistance, thus improve radiating effect and rate of heat dispation.Meanwhile, be provided with the passage with capillary force in the evaporation cavity of this follow-on ultra-thin loop circuit heat pipe, then the flow resistance that is subject in passage of working medium is little, and this can start rapidly, improves radiating efficiency.
In actual applications, after the liquid refrigerant being arranged in passage 3 is heated, liquid refrigerant is vaporizated into steam state working medium, and due to density contrast, steam state working medium rises in the vapour pond 7 above passage 3.When saving bit by bit the working medium of a certain amount of steam state in vapour pond 7, steam state working medium just enters in bend pipe 2, and is cooled by fin component; Steam state working medium after supercooling, reverts to liquid refrigerant again in bend pipe 2, the liquid pool 8 of these liquid refrigerants in bend pipe 2 below admission passage.Assist and have the passage 4 of capillary force due to gravity, the liquid refrigerant being arranged in liquid pool 8 can be sucked up passage 4, and the liquid refrigerant being positioned at passage 4 is again heated and is converted into steam state working medium, and these steam state working medium rise to vapour pond 7 again.Working medium like this forms circulation by conversion that is liquid and steam state, thus realizes radiating effect.
Described passage 4 comprises multiple conduit 41 and multiple projection 42, the distribution and multiple described conduit 41 and multiple projection 42 are alternately arranged successively, simultaneously the distribution parallelogram of multiple described conduit 41 and multiple projection 42.Projection 42 is in strip, and projection 42 and conduit 41 are alternately arranged successively, and the height of the end face of the upper/lower terminal of the projection 42 be alternately arranged successively and conduit 41 reduces from left to right gradually, thus forms parallelogram.Concrete, employing thickness d is the metal substrate 1 of 1mm, and logical milling car is processed metal substrate 1, and mill out rectangular groove 3, the groove depth of groove 3 is 0.6mm; And the groove width b of conduit 41 is 3mm, the groove depth c of described conduit 41 is 0.6mm; The width d of described projection 42 is 3mm.
The described end face of projection 42 upper end and the angle a of horizontal plane are 3.434 °, even the angle of the line above passage 4 high order end above its low order end and horizontal plane is 3.434 °.Because of passage 4 parallelogram, then the line below passage 4 high order end to low order end and the angle of horizontal plane are also 3.434 °.
Described metal substrate 1 and metal cover board all rectangular.This not only facilitates processing metal substrate 1 and metal cover board, also facilitates this loop circuit heat pipe to be installed on thermal source simultaneously.
Described groove 3 is rectangular.The shape of groove 3 and the form fit of metal substrate 1, the shape also convenient processing of groove 3, ensures that the evaporation cavity forming larger volume loads working medium simultaneously, improves radiating effect further.
As shown in Figure 4, described follow-on ultra-thin loop circuit heat pipe also comprises fin component, described fin component comprises fin base 10 and fin 11, and described fin 11 is all fixed on a side of fin base 10, and the another side of described fin base 10 is connected with bend pipe 2.Fin component adopts aluminum metal to be made.Aluminum metal heat conduction is fast, and fin component is installed on bend pipe 2, utilizes expansion area of dissipation to increase radiating efficiency
The another side of described fin base 10 is provided with mounting groove 12, and described bend pipe 2 embeds mounting groove 12, and is fixed by screw locking.This design is convenient processing not only, and convenient installation.
Compared with the application for a patent for invention (calling front application for a patent for invention in the following text) that follow-on ultra-thin loop circuit heat pipe and the application number applied for before the applicant of the present embodiment are 201410366297.3, patent name is a kind of ultra-thin loop circuit heat pipe:
1, the passage parallelogram structure in the follow-on ultra-thin loop circuit heat pipe in the present embodiment, and the vapour pond and the liquid pool that are respectively equipped with width gradual change above and below passage.The change of this conduit arrangement, not only form extra pressure poor, promote steam state working medium to accelerate to flow out, the silting state of steam state working medium also effectively can be alleviated in vapour pond simultaneously, the steam state working medium of being detained can flow out from evaporation cavity outlet on stable and continuous ground, the quality of circulation increases and cycle frequency improves, and the sensible capacity of working medium is not fully exerted.Simultaneously unobstructed owing to circulating, the superheated steam amount in each conduit reduces, and mass dryness fraction reduces, and has enough returned cold liquid to supplement in time, and remain higher two-phase heat transfer efficiency in evaporimeter, the running temperature of system is effectively reduced.Compared with front application for a patent for invention: the heat transfer property of system is strengthened, the running temperature of evaporimeter significantly reduces, and evaporator temperature on average declines 8 DEG C, and maximum decline reaches 12 DEG C, as shown in Figure 5.Rectangle evaporimeter in Fig. 5 is expressed as the evaporimeter of front application for a patent for invention, this because of the passage in the evaporimeter of front application for a patent for invention rectangular, and parallelogram evaporimeter represents the evaporimeter of the follow-on ultra-thin loop circuit heat pipe of the present embodiment.
2, compared with front application for a patent for invention: due to the optimization of the conduit arrangement mode of the present embodiment, the heat transfer potential of system is significantly improved, run thermal resistance and also greatly reduce.The operation thermal resistance of the ultra-thin loop circuit heat pipe of the passage parallelogram structure that conduit arrangement is formed on average have dropped 44%, and working medium significantly promotes in intrasystem cycle efficieny and heat transfer potential, as shown in Figure 6.In Fig. 6, during rectanglar arrangement, thermal resistance represents the thermal resistance of front application for a patent for invention, and during parallelogram arrangement, thermal resistance represents well the thermal resistance of the follow-on ultra-thin loop circuit heat pipe of the present embodiment.
3, compared with front application for a patent for invention: the conduit arrangement mode of optimization and be provided with the start-up course that vapour pond and liquid pool also accelerate ultra-thin loop circuit heat pipe, more quick smoothly can start under lower thermic load.What Fig. 7 reflected is the present embodiment and application for a patent for invention before, evaporation cavity outlet (i.e. the first connected entrance) of ultra-thin loop circuit heat pipe and the temperature situation over time of evaporator inlet (i.e. the second connected entrance).Under low heating load, the ultra-thin loop circuit heat pipe of passage parallelogram structure can steadily start smoothly when 700s, and the forward circulation of working medium is able to Establishment of Stable and starts efficient work; And under the rectangular arrangement of the passage of front application for a patent for invention, out temperature continuing vigorous shakes, stable forward circulation cannot be set up, until 2200s, system just starts completely.This is because liquid pool can save more liquid working substance, at lower power, effectively can stop the recoil of steam working medium, reduces the flow instability of system and leaks heat; Meanwhile, steam state working medium flows out from evaporation cavity outlet because pressure reduction imbalance more easily accumulates in vapour pond, and one-way flow is protected, and ultra-thin loop circuit heat pipe system more easily starts.Rectangle evaporimeter in Fig. 7 is expressed as the evaporimeter of front application for a patent for invention, and parallelogram evaporimeter represents the evaporimeter of the follow-on ultra-thin loop circuit heat pipe of the present embodiment.
Therefore, the passage parallelogram Structural assignments of the present embodiment optimizes the conduit arrangement mode of rectangular arrangement in former evaporimeter, add vapour pond and the liquid pool of width gradual change simultaneously, this makes the cooling system of loop circuit heat pipe more easily start, and improve heat transfer potential, accelerate working medium in intrasystem cycle efficieny, significantly reduce and run thermal resistance and running temperature.
Above-mentioned detailed description of the invention is preferred embodiment of the present utility model; can not limit the utility model; the any of other does not deviate from the technical solution of the utility model and the substitute mode of the change made or other equivalence, is included within protection domain of the present utility model.
Claims (10)
1. a follow-on ultra-thin loop circuit heat pipe, comprise metal substrate, metal cover board and bend pipe, described metal substrate is provided with groove, the edge of described metal substrate is connected with the edge seal of metal cover board, described metal cover board covers groove, be provided with in described groove and there is capillary passage, the two ends of described metal substrate are respectively equipped with the first connected entrance and the second connected entrance, described first connected entrance and the second connected entrance all communicate with groove, and the two ends of described bend pipe are connected to the first connected entrance and the second connected entrance; It is characterized in that: described passage parallelogram, the top of described passage is provided with the vapour pond of width gradual change, and the below of described passage is provided with the liquid pool of width gradual change; Described vapour pond is connected by passage with liquid pool.
2. follow-on ultra-thin loop circuit heat pipe according to claim 1, is characterized in that: described first connected entrance is positioned at the upper right side of metal substrate, and described second connected entrance is positioned at the lower-left end of metal substrate.
3. follow-on ultra-thin loop circuit heat pipe according to claim 2, is characterized in that: the width of described liquid pool reduces gradually along the horizontal direction away from the second connected entrance; The width in described vapour pond reduces gradually along the horizontal direction away from the first connected entrance.
4. follow-on ultra-thin loop circuit heat pipe according to claim 1, it is characterized in that: described passage comprises multiple conduit and multiple projection, the distribution and multiple described conduit and multiple projection are alternately arranged successively, simultaneously the distribution parallelogram of multiple described conduit and multiple projection.
5. follow-on ultra-thin loop circuit heat pipe according to claim 4, is characterized in that: the groove width of described conduit is 1mm ~ 5mm, and the groove depth of described conduit is 0.4mm ~ 0.8mm; The width of described projection is 1mm ~ 5mm.
6. follow-on ultra-thin loop circuit heat pipe according to claim 4, is characterized in that: the end face of described projection upper end and the angle of horizontal plane are 3 ° ~ 5 °.
7. follow-on ultra-thin loop circuit heat pipe according to claim 1, is characterized in that: described metal substrate and metal cover board are all rectangular.
8. follow-on ultra-thin loop circuit heat pipe according to claim 1, is characterized in that: described groove is rectangular.
9. follow-on ultra-thin loop circuit heat pipe according to claim 1, it is characterized in that: also comprise fin component, described fin component comprises fin base and fin, and described fin is all fixed on a side of fin base, and the another side of described fin base is connected with bend pipe.
10. follow-on ultra-thin loop circuit heat pipe according to claim 9, is characterized in that: the another side of described fin base is provided with mounting groove, and described bend pipe embeds mounting groove, and is fixed by screw locking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520323902.9U CN204649044U (en) | 2015-05-18 | 2015-05-18 | A kind of follow-on ultra-thin loop circuit heat pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520323902.9U CN204649044U (en) | 2015-05-18 | 2015-05-18 | A kind of follow-on ultra-thin loop circuit heat pipe |
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| Publication Number | Publication Date |
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| CN204649044U true CN204649044U (en) | 2015-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520323902.9U Withdrawn - After Issue CN204649044U (en) | 2015-05-18 | 2015-05-18 | A kind of follow-on ultra-thin loop circuit heat pipe |
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| CN (1) | CN204649044U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880107A (en) * | 2015-05-18 | 2015-09-02 | 华南理工大学 | Improved ultrathin loop heat pipe |
| CN107664448A (en) * | 2016-07-29 | 2018-02-06 | 赵炜 | A kind of heat pipe of heating power change |
| CN107664449A (en) * | 2016-07-29 | 2018-02-06 | 赵炜 | A kind of heat pipe of heat stepwise |
| CN107664447A (en) * | 2016-07-29 | 2018-02-06 | 赵炜 | A kind of heat pipe of heater caliber change |
| CN107664446A (en) * | 2016-07-29 | 2018-02-06 | 赵炜 | A kind of heat pipe of intelligent temperature control |
| CN113747761A (en) * | 2021-09-02 | 2021-12-03 | 华南理工大学 | Non-equidistant parallel channel double-outlet liquid cooling plate |
-
2015
- 2015-05-18 CN CN201520323902.9U patent/CN204649044U/en not_active Withdrawn - After Issue
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880107A (en) * | 2015-05-18 | 2015-09-02 | 华南理工大学 | Improved ultrathin loop heat pipe |
| CN104880107B (en) * | 2015-05-18 | 2017-10-20 | 华南理工大学 | A kind of follow-on ultra-thin loop circuit heat pipe |
| CN107664448A (en) * | 2016-07-29 | 2018-02-06 | 赵炜 | A kind of heat pipe of heating power change |
| CN107664449A (en) * | 2016-07-29 | 2018-02-06 | 赵炜 | A kind of heat pipe of heat stepwise |
| CN107664447A (en) * | 2016-07-29 | 2018-02-06 | 赵炜 | A kind of heat pipe of heater caliber change |
| CN107664446A (en) * | 2016-07-29 | 2018-02-06 | 赵炜 | A kind of heat pipe of intelligent temperature control |
| CN107664446B (en) * | 2016-07-29 | 2019-03-05 | 青岛酒店管理职业技术学院 | A kind of heat pipe of intelligent temperature control |
| CN107664449B (en) * | 2016-07-29 | 2019-06-25 | 肇庆市宇华电器有限公司 | A kind of heat pipe of segmentally heating |
| CN107664447B (en) * | 2016-07-29 | 2019-07-16 | 青岛酒店管理职业技术学院 | A kind of heat pipe of heating device caliber change |
| CN107664448B (en) * | 2016-07-29 | 2020-03-17 | 青岛酒店管理职业技术学院 | Heat pipe with variable heating power |
| CN113747761A (en) * | 2021-09-02 | 2021-12-03 | 华南理工大学 | Non-equidistant parallel channel double-outlet liquid cooling plate |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150916 Effective date of abandoning: 20171020 |
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| AV01 | Patent right actively abandoned |