CN102683307A - CPU (Central Processing Unit) radiator with combined corner-tube type flat self-excited capillary heat pipe - Google Patents
CPU (Central Processing Unit) radiator with combined corner-tube type flat self-excited capillary heat pipe Download PDFInfo
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- CN102683307A CN102683307A CN2012101742809A CN201210174280A CN102683307A CN 102683307 A CN102683307 A CN 102683307A CN 2012101742809 A CN2012101742809 A CN 2012101742809A CN 201210174280 A CN201210174280 A CN 201210174280A CN 102683307 A CN102683307 A CN 102683307A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0233—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes the conduits having a particular shape, e.g. non-circular cross-section, annular
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/04—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure
- F28D15/046—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure characterised by the material or the construction of the capillary structure
Abstract
The invention discloses a CPU (Central Processing Unit) radiator with a combined corner-tube type flat self-excited capillary heat pipe. The CPU radiator comprises a heat pipe, a fastening fin, a side part radiating fin and a fan. The heat pipe comprises a base part and two side parts which are vertical to the base part; the base part serves as an evaporation section and the side parts serve as condensation sections; both the base part and the side parts are provided with capillary grooves, and the capillary groove of the base part is communicated with the capillary grooves of the side parts; the capillary grooves are arranged in the front side and the back side of a base plate; cover boards for sealing the capillary grooves are arranged on both the front side and the back side of the base plate; the base part closely clings to a CPU chip and is fixed with the CPU chip through the fastening fin; the side parts closely cling to the side part radiating fin and are connected with the side part radiating fin; and the fan is fixedly arranged on the backside of the heat pipe. The CPU radiator is simple in structure and convenient to assemble, has strong heat dissipating ability and can satisfy the horizontal heat dissipation requirement and even the requirement of heat dissipation in the direction opposite to the direction of gravity; due to the adoption of the combined type dual parallel triangular grooves, the working reliability is improved; and due to the adoption of a metal porous layer and a polymer drainage blanket, the relevant boiling and condensation heat exchanges inside the grooves of the base part and the side parts are intensified.
Description
Technical field
The present invention relates to a kind of heat abstractor, what be specifically related to is a kind of combined type cornue type flat board autoexcitation capillary heat pipe cpu heat that design for high heat flux cpu chip heat radiation.
Background technology
Fast development along with electronic technology; Electronic device and equipment just develop towards the direction of high-performance, densification, miniaturization; The improving constantly of integrated level, packaging density and operating frequency that causes chip; Making the energy consumption of high heat flux euthermic chip (like CPU, GPU, LED) grow with each passing day, is 135W like the power consumption of Intel core i7-3960X CPU, and the power consumption of the high-end video card GeForce of NVIDIA GTX 590 is then up to 365W.Add the radiator that fan forced convection forms and be difficult to satisfy the heat radiation requirement and traditional pedestal and fin are one-body molded, thereby the heat dissipation technology that presses for the research and development high heat flux is solved.For this reason, develop at present and heat pipe heat radiation, active liquid circulation heat radiation, thermoelectric cooling, drip jet/multiple novel heat dissipation technologys such as fountain refrigeration.Wherein, characteristics such as heat pipe heat radiation technology, perfect heat-dissipating low with its cost, reliability height have obtained using comparatively widely.At present, comparatively commonly used in electronic chip heat radiation field have common capillary wick heat pipe and a gravity assisted heat pipe etc.And common capillary wick heat pipe will be on inner tubal wall the sintering capillary wick, manufacture craft is comparatively complicated.Though and gravity assisted heat pipe does not need wick; But condensation segment working medium must rely on gravity auxiliary reflux to evaporation section to realize circulation; So when level or contrary gravity direction work, the adopting heat pipes for heat transfer performance can reduce even produce inefficacy greatly, therefore; The gravity assisted heat pipe heat abstractor is not suitable for vertically or radiating surface is oriented the euthermic chip of contrary gravity direction, as video card euthermic chip (GPU) etc.
The autoexcitation capillary heat pipe is propose the nineties in last century a kind of novel, heat transfer element efficiently.Such heat pipe generally is to charge into part working medium after being vacuumized by the snakelike capillary channel of completion to constitute, and can be divided into end to end closed type and two kinds of the open types that does not connect from beginning to end, and its operation logic and traditional capillary heat pipe have a great difference.Because channel diameter reaches capillary dimensions, the effect that surface tension overcomes gravity makes intraductal working medium form the aeroembolism and the liquid bolt of random distribution.Working medium heats up in the evaporation section heat absorption in the heat pipe, and the liquid gasification is expanded rapidly and boosted, and promotes working medium and flows to condensation segment; In condensation segment working medium heat release cooling, bubble shrinkage, condensation of gas becomes liquid, and pressure descends.Because two ends pressure reduction, and the inhomogeneities of the randomness that distributes of gas/liquid bolt and localized heat transfer causes in the adjacent tubes internal pressure unevenly, causes working medium self-oscillation between evaporation section and condensation segment to flow, and the realization heat is by the transmission of end to end.Such heat pipe not only has traditional wick heat pipe and the gravity assisted heat pipe cost is low, the characteristics of perfect heat-dissipating; And have simple in structure; Easy to process; Be prone to bending and arrange, reversible gravity operation peculiar advantages such as (the curved number of passage were greater than 16 o'clock) is suitable for the high-power euthermic chip heat radiation that various angles are placed.But conventional tubular type autoexcitation capillary heat pipe is generally formed through bending repeatedly by metal capillary, and its profile and euthermic chip are difficult to mate, and mostly it be the single capillary one-shot forming, and yields is lower, and reliability is bad.
Summary of the invention
The purpose of this invention is to provide a kind of simple and reasonable, the dull and stereotyped autoexcitation capillary heat pipe of the combined type cornue type cpu heat that compact conformation, heat transfer property are good.
For realizing above-mentioned purpose, the invention provides the dull and stereotyped autoexcitation capillary heat pipe of a kind of combined type cornue type cpu heat, comprise heat pipe, fastening fin, sidepiece radiating fin and fan; It is characterized in that: described heat pipe is the dull and stereotyped autoexcitation capillary heat pipe of combined type cornue type; The dull and stereotyped autoexcitation capillary heat pipe of this combined type cornue type comprises base portion and two sidepieces, and described sidepiece is vertical with described base portion, and base portion is an evaporation section; Sidepiece is a condensation segment; In described base portion and sidepiece, be provided with the capillary conduit, the capillary conduit of base portion is communicated with the capillary conduit of said sidepiece, and said capillary conduit is arranged on the obverse and reverse of a substrate; The cover plate of the said capillary conduit of one sealing all is set on the obverse and reverse of substrate again; Described base portion is through described fastening fin and cpu chip is close to and fixing, and described sidepiece and described sidepiece radiating fin are close to and are interconnected, and said fan is fixed on the back side of said heat pipe.
The alternate layout of capillary conduit of the obverse and reverse of the dull and stereotyped autoexcitation capillary heat pipe of said combined type cornue type also connects at the part end position each other, on described metal substrate, forms two mutual closed type cornue type autoexcitation capillary heat pipies compound, parallel with one another.
Capillary conduit Surface Machining at said base portion has metal porous layer; The capillary conduit surface preparation of described sidepiece has the polymer hydrophobic layer.
Said sidepiece radiating fin comprises an a pair of inner fin group and an external fins set, and described a pair of inner fin group is fixed in the middle of described two sidepieces, and described one external fins set is fixed on described two exterior side surface.
On described pair of side parts radiating fin dorsal part outward flange, be provided with bayonet socket, be provided with the draw-in groove that cooperatively interacts with said bayonet socket in said fan housing edges.
Said capillary conduit cross section is a triangle, and equivalent diameter is between 0.5～3.5mm.
The present invention has adopted the dull and stereotyped autoexcitation capillary heat pipe of new and effective cornue type as basic heat transfer element, compares with gravity assisted heat pipe with traditional capillary wick, and this heat pipe need not sintering or makes the capillary wick in the conduit, makes simple, with low cost; The metallic walls of the corresponding position, said positive and negative conduit end that part is adjacent is got through; Make the adjacent positive and negative conduit of described part connect; Thereby on same said metal substrate, form two mutual closed type autoexcitation capillary heat pipies compound, parallel with one another; Adopt such design; Make full use of the space of said substrate, improved structural compactness, and when a described closed type autoexcitation capillary heat pipe operational failure is wherein arranged; The another one closed type autoexcitation capillary heat pipe parallelly connected with it then can continue to keep the operate as normal of said radiator, thereby improved the functional reliability of the dull and stereotyped autoexcitation capillary heat pipe of described combined type cornue type cpu heat.
As optimal technical scheme of the present invention, said sidepiece radiating fin comprises an a pair of inner fin group and an external fins set.The evaporation section of the dull and stereotyped autoexcitation capillary heat pipe of said combined type cornue type and the condensation segment two sides of both sides all scribble heat-conducting silicone grease, to reduce contact heat resistance.Said inner fin group is positioned at the inside of two sidepieces of the dull and stereotyped autoexcitation capillary heat pipe of said combined type cornue type; Said outer fins set is positioned at the inside of two sidepieces of the dull and stereotyped autoexcitation capillary heat pipe of said combined type cornue type; Correspondence position on dull and stereotyped two sidepieces of autoexcitation capillary heat pipe of said combined type cornue type and the described inside and outside fins set has screwed hole, and trip bolt passes screwed hole with three's serial connection and tighten together.The fastening fin of the dull and stereotyped autoexcitation capillary heat pipe of said combined type cornue type comprises pedestal and is fixed on the fin on the pedestal; Four jiaos on said pedestal respectively have a flange; Have screwed hole above and supply trip bolt spinning to fix, described base portion is close to the parts that need heat radiation through described fastening fin and is fixedly connected.Adopt the fastening fin of described evaporation section; Can be in the dull and stereotyped autoexcitation capillary heat pipe of fixing described combined type cornue type; For described base portion evaporation section provides the auxiliary heat dissipation except said heat pipe self work heat dissipation capacity, further improved the comprehensive heat dispersion of said radiator.
On said pair of side parts radiating fin dorsal part outward flange, be provided with bayonet socket, be provided with the draw-in groove that cooperatively interacts with said bayonet socket in said fan housing edges.The design of bayonet socket and draw-in groove makes that the installation and removal of fan are all very convenient.
Said capillary conduit cross section is a triangle, and equivalent diameter is between 0.5～3.5mm.Such design makes said capillary conduit produce very big capillary force at its sharp corner, and under the identical equivalent diameter and the identical heating temperature difference, its evaporation heat transfer amount is bigger than rectangle and circular cross-section conduit.In addition, under this capillary dimensions, surface tension effects highlights, and the dull and stereotyped autoexcitation capillary heat pipe of described combined type cornue type inner surface tension force can overcome the influence of gravity, when level installation even contrary gravity operation, still has the good heat transfer performance.
As further improvement of the present invention, the porous layer in the conduit inner surface spray metal of said base portion, and prepare the one layer of polymeric hydrophobic layer at described side channels inner surface.Adopt the design of spray metal porous layer can increase the nucleus of boiling and effective heat exchange area on the evaporation section of base portion described in the boiling process conduit inner surface greatly, thereby effectively strengthen the boiling heat transfer intensity of said evaporation section; Adopt the design of preparation one layer of polymeric hydrophobic layer; Can promote the generation of the dropwise condensation that the condensing heat-exchange coefficient is very big; In addition; The difference of the various bond energy content of polymer surfaces impels polymer surfaces to form more nuclearing centre, thereby has effectively strengthened the condensing heat-exchange intensity of said sidepiece condensation segment.
The present invention is a kind of combined type cornue type flat board autoexcitation capillary heat pipe radiator that design for high heat flux cpu chip heat radiation, and is simple in structure, easy to assembly.This radiator has adopted the dull and stereotyped autoexcitation capillary heat pipe of new and effective cornue type as basic heat transfer element, compares with gravity assisted heat pipe with traditional capillary wick, and this heat pipe need not sintering or makes the capillary wick in the conduit, makes simple, with low cost; Heat pipe conduit hydraulic diameter is capillary dimensions, weakened gravity to the influence that intraductal working medium flows and conducts heat, and makes it can level even contrary gravity operation; The conduit cross section is a triangle, makes the capillary conduit produce very big capillary force at its sharp corner, and under the identical equivalent diameter and the identical heating temperature difference, its evaporation heat transfer amount is bigger than rectangle and circular cross-section conduit; Adopt the design of positive and negative two-in-parallel combined type conduit, improved the structural compactness of heat exchanger, and the closed type autoexcitation capillary heat pipe of two parallel connections is backuped each other, improved the reliability of radiator work.In addition, at heat pipe base portion evaporation section and sidepiece condensation segment conduit inner surface difference spray metal porous layer and preparation polymer hydrophobic layer, hardening constituent is answered boiling and the dropwise condensation heat exchange in the active section respectively, has further improved the integral heat sink performance of radiator.
Description of drawings
Fig. 1 is a perspective view of the present invention;
Fig. 2 is a stereochemical structure assembling sketch map of the present invention;
Fig. 3 is the making flow chart of the dull and stereotyped autoexcitation capillary heat pipe of combined type cornue type of the present invention;
Fig. 4 is a two-sided two-in-parallel combined type conduit side sectional view on the metal substrate of the present invention;
Fig. 5 is the perforation sketch map of two-sided conduit.
Fig. 6 is the fastening fin structure sketch map of base portion evaporation section of the present invention;
Fig. 7 is a base portion evaporation section conduit schematic cross-section of the present invention;
Fig. 8 is a sidepiece condensation segment conduit schematic cross-section of the present invention.
Wherein, 1-trip bolt, the fastening fin of 2-base portion evaporation section, 3-sidepiece condensation segment inner fin group, the dull and stereotyped autoexcitation capillary heat pipe of 4-combined type cornue type; The outer fins set of 5-sidepiece condensation segment, 6-fan, 7-bayonet socket, 8-draw-in groove, 9-substrate; The 10-cover plate, 11-pedestal, 12-integrated molding fin, 13-flange, 14-metal porous layer; 15-polymer hydrophobic layer, 16, conduit A, 17, conduit B, 18, through channel.
Embodiment
Specify optimal technical scheme of the present invention below in conjunction with accompanying drawing.
Like Fig. 1, shown in 2; The dull and stereotyped autoexcitation capillary heat pipe of combined type cornue type of the present invention cpu heat comprises the outer fins set of the dull and stereotyped autoexcitation capillary heat pipe of combined type cornue type 4, pair of side parts condensation segment inner fin group 3, pair of side parts condensation segment 5, a fastening fin 2 of base portion evaporation section and a fan 6.
As shown in Figure 3, the dull and stereotyped autoexcitation capillary heat pipe 4 of said combined type cornue type is square frame shape structures that formed through twice hot bending folding by a narrow long tabular autoexcitation capillary heat pipe, and its opening is positioned at the top, and base portion and both sides are respectively evaporation section and condensation segment; Said narrow long tabular autoexcitation capillary heat pipe welds one deck cover plate 10 respectively by substrate 9 two sides and is sealed to form; Said substrate 9 positive and negatives are carved with many conduits respectively, and the alternate layout of positive and negative conduit, and said positive and negative conduit end correspondence position communicates; Said conduit cross section is a triangle; Equivalent diameter is between 0.5～3.5mm, and in the conduit inner surface spray metal of said evaporation section porous layer 14, and prepare one layer of polymeric hydrophobic layer 15 at the conduit inner surface of said condensation segment.
The fastening fin 2 of said evaporation section comprises pedestal 11 and is processed in the fin 12 on the pedestal 11, and four jiaos on said pedestal 11 respectively have a flange 13, have screwed hole above, supplies trip bolt 1 to pass and fixing.Said sidepiece condensation segment inner fin group 3 is positioned at the dull and stereotyped autoexcitation capillary heat pipe of said combined type cornue type 4 square frame shape inside configuration, and the outer fins set 5 of said sidepiece condensation segment is positioned at the dull and stereotyped autoexcitation capillary heat pipe of said combined type cornue type 4 square frame shape structure both sides; Correspondence position has screwed hole on the condensation segment of the dull and stereotyped autoexcitation capillary heat pipe of said combined type cornue type 4 both sides and said sidepiece condensation segment inner fin group 3, the outer fins set 5 of sidepiece condensation segment, and confession trip bolt 1 passes and connects fixing.Outside said sidepiece condensation segment, be provided with bayonet socket 7 on the fins set 5 dorsal part outward flanges, be provided with the draw-in groove 8 that cooperatively interacts with said bayonet socket 7 in said fan 6 housing edges.
As shown in Figure 2; Before the assembling, at first will be smooth and clean up with the processing of each heat conduction contact-making surface, and the dull and stereotyped autoexcitation capillary heat pipe 4 of described square frame shape combined type cornue type is carried out leakage check; Then vacuumize and charge into 30% ~ 60% working medium; The working medium kind can wait according to working temperature and body material compatibility and select, and like cold-producing mediums such as water, ammonia, ethanol, methyl alcohol, acetone, R123, and can play the high specific heat capacity of enhanced heat exchange effect, the nano-fluid of high thermal conductivity coefficient etc.Then, with coating heat-conducting silicone grease on the heat conduction contact-making surface between outer fins set 5 of said condensation segment inner fin group 3 and condensation segment and condensation segment, and utilize said trip bolt 1 with three's serial connection and fit tightly and be fixed up.Same; On the heat conduction contact-making surface between said base portion evaporation section and fastening fin 2 of said evaporation section and heating cpu chip, coat heat-conducting silicone grease; Utilize said trip bolt 1 pass in the fastening fin 2 of said evaporation section on four jiaos of flanges 13 screw and with mainboard on corresponding fixing threaded hole screw, described base portion evaporation section is fastened on the said heating cpu chip.Finally, through the outer fins set 5 dorsal part outward flanges of described condensation segment and corresponding bayonet socket 7 of fan 6 housing edges and draw-in groove 8, with the back side of described fan 6 fixings at radiator body.
In the course of the work; The evaporation section absorption of the dull and stereotyped autoexcitation capillary heat pipe of said combined type cornue type cpu heat needs the heat that parts such as chip sent of heat radiation, and working medium intensification gasification is expanded rapidly and boosted, and promotes working medium and flows to described condensation segment; Working medium heat release condensation in this section; Pressure descends, and the heat that is discharged conducts to the inside and outside fins set of said condensation segment through tube wall, and the cold airflow that then relying on said fan is provided is taken away heat with the mode of forced convertion.Simultaneously, the condensation liquid phase working fluid in the said condensation segment is back to heat absorption evaporation once more in the said evaporation section again.So back and forth, working medium realizes that between described evaporation section and condensation segment self-oscillation circulates, and the heat transportation that said chip is produced is described condensation segment and being discharged in the surrounding space extremely.
Fig. 4, Fig. 5 have provided the space structure of two-sided two-in-parallel combined type conduit on the described metal substrate 9.As shown in the figure; For saving the space; Go out many capillary conduits in described high thermal conductivity metal (alloy) substrate 9 tow sides while machining, the alternate layout of positive and negative conduit is in corresponding position, the adjacent positive and negative conduit end of part; Cut off the metallic walls of said positive and negative conduit and got through formation through channel 18, thereby make said positive and negative conduit 16 and 17 connect.Through such mode, just can on same block of described high thermal conductivity metal (alloy) substrate 9, be processed into two mutual conduits compound, parallel with one another.After adding a cover described high thermal conductivity metal (alloy) cover plate 10 and welded seal, just formed the closed type autoexcitation capillary heat exchanging pipe of two parallel connections.Such design use the solid space of described high thermal conductivity metal (alloy) substrate 9; Improved structural compactness; And when a described closed type autoexcitation capillary heat pipe operational failure is wherein arranged; The another one closed type autoexcitation capillary heat pipe parallelly connected with it then can continue to keep the operate as normal of said radiator, thereby improved the functional reliability of the dull and stereotyped autoexcitation capillary heat pipe of said combined type cornue type cpu heat.The cross section of said capillary conduit is a triangle, and equivalent diameter is between 0.5 ~ 3.5mm.Adopt the triangular-section conduit can make the conduit sharp corner produce very big capillary force, under the identical equivalent diameter and the identical heating temperature difference, its evaporation heat transfer amount is greater than rectangle and circular cross-section conduit.In addition; Under this capillary dimensions, the dull and stereotyped autoexcitation capillary heat pipe of described combined type cornue type inner surface tension force can overcome the influence of gravity, when level is installed, still has the good heat transfer performance; And conduit is many more; Gravity effect is more little, when the curved number of conduit greater than 16 the time, gravity almost can be ignored to said adopting heat pipes for heat transfer Effect on Performance.
High thermal conductivity metal (alloy) substrate, seal cover board pedestal and the fin of the dull and stereotyped autoexcitation capillary heat pipe of described combined type cornue type can be selected material different according to condition of work, body material compatibility etc., like carbon steel, low-alloy steel, stainless steel, copper (alloy), aluminium (alloy), nickel (alloy) etc.
As shown in Figure 7, adopting flame-spraying metal dust method on the conduit inner surface of said evaporation section, to process one deck average pore size is 20 ~ 100 μ m, and average thickness is 0.2 ~ 0.5mm, and porosity is 30% ~ 45% metal porous coating.Described metal dust can be according to condition of work, baseplate material, select material different with working medium compatibility etc., like copper (alloy) powder, and aluminium (alloy) powder, stainless steel powder etc.Adopt such design can increase the nucleus of boiling and effective heat exchange area on the conduit of evaporation section described in the boiling process inner surface greatly, thereby effectively strengthen the boiling heat transfer intensity of said evaporation section.
As shown in Figure 8, using plasma surface aggregate method prepares the one layer of polymeric hydrophobic layer at described condensation segment conduit inner surface, gathers octafluorocyclobutane layer etc. as prepare the preparation of hexafluoropropylene polymeric layer, red copper surface in brass surfaces.Adopt such design; Can obtain the very big dropwise condensation of condensing heat-exchange coefficient preferably, in addition, the difference of the various bond energy content of polymer surfaces; Impel polymer surfaces to form more nuclearing centre, thereby effectively strengthened the condensing heat-exchange intensity of said condensation segment.
The present invention is a kind of combined type cornue type flat board autoexcitation capillary heat pipe radiator that design for high heat flux cpu chip heat radiation, and is simple in structure, easy to assembly.This radiator has adopted the dull and stereotyped autoexcitation capillary heat pipe of new and effective cornue type as basic heat transfer element, compares with gravity assisted heat pipe with traditional capillary wick, and this heat pipe need not sintering or makes the capillary wick in the conduit, makes simple, with low cost; Heat pipe conduit hydraulic diameter is capillary dimensions, weakened gravity to the influence that intraductal working medium flows and conducts heat, and makes it can level even contrary gravity operation; The conduit cross section is a triangle, makes the capillary conduit produce very big capillary force at its sharp corner, and under the identical equivalent diameter and the identical heating temperature difference, its evaporation heat transfer amount is bigger than rectangle and circular cross-section conduit; Adopt the design of positive and negative two-in-parallel combined type conduit, improved the structural compactness of heat exchanger, and the closed type autoexcitation capillary heat pipe of two parallel connections is backuped each other, improved the reliability of radiator work.In addition, at heat pipe evaporator section and condensation segment conduit inner surface difference spray metal porous layer and preparation polymer hydrophobic layer, hardening constituent is answered the boiling and the dropwise condensation heat exchange of active section respectively, has further improved the integral heat sink performance of radiator.
Claims (5)
1. the dull and stereotyped autoexcitation capillary heat pipe of combined type cornue type cpu heat; Comprise heat pipe (4), fastening fin (2), sidepiece radiating fin (3,5) and fan (6), it is characterized in that: described heat pipe is the dull and stereotyped autoexcitation capillary heat pipe (4) of combined type cornue type, and the dull and stereotyped autoexcitation capillary heat pipe of this combined type cornue type (4) comprises base portion and two sidepieces; Described sidepiece is vertical with described base portion; Base portion is an evaporation section, and sidepiece is a condensation segment, in described base portion and sidepiece, is provided with the capillary conduit; The capillary conduit of base portion is communicated with the capillary conduit of said sidepiece; Said capillary conduit is arranged on the obverse and reverse of a substrate, and the cover plate (10) of the said capillary conduit of a sealing all is set on the obverse and reverse of substrate again, and described base portion is close to through described fastening fin (2) and cpu chip and is fixing; Described sidepiece and described sidepiece radiating fin (3,5) are close to and are interconnected, and said fan (6) is fixed on the back side of said heat pipe.
2. the dull and stereotyped autoexcitation capillary heat pipe of combined type cornue type as claimed in claim 1 cpu heat; It is characterized in that: the alternate layout of capillary conduit of the obverse and reverse of the dull and stereotyped autoexcitation capillary heat pipe of said combined type cornue type (4) also connects at the part end position each other, on described metal substrate, forms two mutual closed type cornue type autoexcitation capillary heat pipies compound, parallel with one another.
3. the dull and stereotyped autoexcitation capillary heat pipe of combined type cornue type as claimed in claim 1 cpu heat, it is characterized in that: the capillary conduit inner surface at said base portion is processed with metal porous layer; The capillary conduit inner surface of described sidepiece has prepared the polymer hydrophobic layer.
4. the dull and stereotyped autoexcitation capillary heat pipe of combined type cornue type as claimed in claim 2 cpu heat; It is characterized in that: on said a pair of condensation segment sidepiece radiating fin (5) dorsal part outward flange, be provided with bayonet socket (7), be provided with the draw-in groove (8) that cooperatively interacts with said bayonet socket (7) in said fan (6) housing edges.
5. like claim 1 or the dull and stereotyped autoexcitation capillary heat pipe of 2 or 3 described combined type cornue types cpu heat, it is characterized in that: said capillary conduit cross section is a triangle, and equivalent diameter is between 0.5～3.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210174280.9A CN102683307B (en) | 2012-05-31 | 2012-05-31 | CPU (Central Processing Unit) radiator with combined corner-tube type flat self-excited capillary heat pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210174280.9A CN102683307B (en) | 2012-05-31 | 2012-05-31 | CPU (Central Processing Unit) radiator with combined corner-tube type flat self-excited capillary heat pipe |
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| Publication Number | Publication Date |
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| CN102683307A true CN102683307A (en) | 2012-09-19 |
| CN102683307B CN102683307B (en) | 2014-11-05 |
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| CN201210174280.9A Expired - Fee Related CN102683307B (en) | 2012-05-31 | 2012-05-31 | CPU (Central Processing Unit) radiator with combined corner-tube type flat self-excited capillary heat pipe |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2713132A1 (en) * | 2012-09-26 | 2014-04-02 | Alcatel Lucent | A vapor-based heat transfer apparatus |
| CN110058663A (en) * | 2018-01-18 | 2019-07-26 | 阮琳 | A kind of radiator and the electronic equipment with the radiator |
| CN111895522A (en) * | 2020-07-20 | 2020-11-06 | 青岛海尔空调电子有限公司 | Radiator and air condensing units |
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| CN102121802A (en) * | 2011-03-25 | 2011-07-13 | 长沙理工大学 | Plate-type pulsating heat pipe with double-side grooves |
| US20110209864A1 (en) * | 2008-11-12 | 2011-09-01 | Astrium Sas | Thermal control device with network of interconnected capillary heat pipes |
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2012
- 2012-05-31 CN CN201210174280.9A patent/CN102683307B/en not_active Expired - Fee Related
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| JPH0629683A (en) * | 1992-03-31 | 1994-02-04 | Furukawa Electric Co Ltd:The | Heat pipe type heat dissipation unit for electronic apparatus |
| US20110209864A1 (en) * | 2008-11-12 | 2011-09-01 | Astrium Sas | Thermal control device with network of interconnected capillary heat pipes |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP2713132A1 (en) * | 2012-09-26 | 2014-04-02 | Alcatel Lucent | A vapor-based heat transfer apparatus |
| CN110058663A (en) * | 2018-01-18 | 2019-07-26 | 阮琳 | A kind of radiator and the electronic equipment with the radiator |
| CN111895522A (en) * | 2020-07-20 | 2020-11-06 | 青岛海尔空调电子有限公司 | Radiator and air condensing units |
| CN111895522B (en) * | 2020-07-20 | 2023-02-03 | 青岛海尔空调电子有限公司 | Radiator and air condensing units |
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| CN102683307B (en) | 2014-11-05 |
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