CN102683307B - 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
- Publication number
- CN102683307B CN102683307B CN201210174280.9A CN201210174280A CN102683307B CN 102683307 B CN102683307 B CN 102683307B CN 201210174280 A CN201210174280 A CN 201210174280A CN 102683307 B CN102683307 B CN 102683307B
- Authority
- CN
- China
- Prior art keywords
- capillary
- heat pipe
- heat
- type
- autoexcitation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
-
- 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, be specifically related to be a kind of be the high heat flux cpu chip dull and stereotyped autoexcitation capillary heat pipe of the combined type cornue type that the designs cpu heat that dispels the heat.
Background technology
Along with the fast development of electronic technology, electronic device and equipment are just towards the future development of high-performance, densification, miniaturization, cause the improving constantly of integrated level, packaging density and operating frequency of chip, the energy consumption of high heat flux euthermic chip (as CPU, GPU, LED) is grown with each passing day, if the power consumption of Intel core i7-3960X CPU is 135W, the power consumption of the high-end video card GeForce of NVIDIA GTX 590 is up to 365W.And the one-body molded radiator that adds fan forced convection composition of traditional pedestal and fin has been difficult to meet heat radiation requirement, thereby solve in the urgent need to the heat dissipation technology of research and development high heat flux.For this reason, developed at present the heat dissipation technology of the various news such as heat pipe heat radiation, active liquid-circulating heat radiation, thermoelectric cooling, drip jet/fountain refrigeration.Wherein, heat pipe heat radiation technology, perfect heat-dissipating low with its cost, reliability high have obtained application comparatively widely.At present, comparatively conventional in heat dissipation of electronic chip 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 sintering capillary wick, manufacture craft is comparatively complicated.And though gravity assisted heat pipe does not need liquid-sucking core, but condensation segment working medium must rely on gravity auxiliary reflux to evaporation section to realize circulation, so in the time of level or contrary gravity direction work, adopting heat pipes for heat transfer performance can reduce greatly even generation and lose efficacy, therefore, 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.
Autoexcitation capillary heat pipe is novel, the efficient heat transfer element of one proposing the nineties in last century.Such heat pipe is generally after snakelike capillary channel vacuumizes, to be filled with part working medium and to form by completing, and can be divided into two kinds of the open types that end to end closed type and head and the tail do not connect, 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 aeroembolism and the liquid bolt of random distribution.Hot intraductal working medium heats up in evaporation section heat absorption, and liquid gasification expands rapidly and boosts, and promotes working medium and flows to condensation segment; In condensation segment working medium heat release cooling, bubble shrinkage, the gas cold liquid that congeals into, pressure drop.Due to two ends pressure reduction, and gas/liquid bolt distribute randomness and the inhomogeneities of localized heat transfer cause in adjacent tubes internal pressure imbalance, cause working medium between evaporation section and condensation segment self-oscillation flow, realize the transmission of heat by end to end.Such heat pipe not only has traditional liquid-sucking core heat pipe and gravity assisted heat pipe cost is low, the feature of perfect heat-dissipating, and have simple in structure, easy to process, easily bending is arranged, the peculiar advantages such as reversible gravity operation (the curved number of passage is greater than at 16 o'clock), are 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, its profile is mated with euthermic chip is very difficult, and it mostly is single capillary one-shot forming, and yields is lower, and reliability is bad.
Summary of the invention
The object of this invention is to provide one simple and reasonable, compact conformation, the good dull and stereotyped autoexcitation capillary heat pipe of the combined type cornue type cpu heat of heat transfer property.
For achieving the above object, 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, heat dissipation 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, described sidepiece is vertical with described base portion, base portion is evaporation section, sidepiece is condensation segment, in described base portion and sidepiece, be provided with capillary channel, the capillary channel of base portion is communicated with the capillary channel of described sidepiece, described capillary channel is arranged on the obverse and reverse of a substrate, the cover plate of the described capillary channel of one sealing is all set on the obverse and reverse of substrate again, described base portion is close to and is fixed by described fastening fin and cpu chip, described sidepiece and described heat dissipation fin are close to and interconnect, described fan is fixed on the back side of described heat pipe.
The alternate layout of capillary channel of the obverse and reverse of the dull and stereotyped autoexcitation capillary heat pipe of described combined type cornue type also connects mutually at part end position, forms two mutual closed type cornue type autoexcitation capillary heat pipies compound, parallel with one another on described metal substrate.
Capillary channel Surface Machining at described base portion has metal porous layer; The capillary channel surface of described sidepiece is prepared with polymer hydrophobic layer.
Described heat dissipation fin comprises 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 two described sidepieces, and a described external fins set is fixed on two described exterior side surface.
On described a pair of heat dissipation fin dorsal part outward flange, be provided with bayonet socket, be provided with in inner side, described fan housing edge the draw-in groove cooperatively interacting with described bayonet socket.
Described capillary channel cross section is 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 is without sintering or make the capillary wick in conduit, makes simple, with low cost, the metallic walls of the corresponding position, described positive and negative conduit end that part is adjacent is got through, the adjacent positive and negative conduit of described part is connected, thereby on metal substrate described in same, form two mutual compound, closed type autoexcitation capillary heat pipe parallel with one another, adopt such design, take full advantage of the space of described substrate, improve structural compactness, and when wherein have described in one closed type autoexcitation capillary heat pipe operational failure time, the another one closed type autoexcitation capillary heat pipe in parallel with it can continue to maintain the normal work of described radiator, thereby improve the functional reliability of the described dull and stereotyped autoexcitation capillary heat pipe of combined type cornue type cpu heat.
As the preferred technical solution of the present invention, described heat dissipation fin comprises a pair of inner fin group and an external fins set.The evaporation section of the dull and stereotyped autoexcitation capillary heat pipe of described combined type cornue type and the condensation segment two sides of both sides all scribble heat-conducting silicone grease, to reduce contact heat resistance.Described inner fin group is positioned at the inside of two sidepieces of the dull and stereotyped autoexcitation capillary heat pipe of described combined type cornue type, described outer fins set is positioned at the inside of two sidepieces of the dull and stereotyped autoexcitation capillary heat pipe of described combined type cornue type, correspondence position in dull and stereotyped two sidepieces of autoexcitation capillary heat pipe of described combined type cornue type and described inside and outside fins set has screwed hole, and trip bolt is connected in series three and tightens together through screwed hole.The fastening fin of the dull and stereotyped autoexcitation capillary heat pipe of described combined type cornue type comprises pedestal and is fixed on the fin on pedestal, four jiaos on described pedestal respectively have a flange, have screwed hole above and fix for trip bolt spinning, described base portion is close to and is fixedly connected with the parts that need heat radiation by described fastening fin.Adopt the described fastening fin of 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 described heat pipe self work heat dissipation capacity, further improve the comprehensive heat dispersion of described radiator.
On described a pair of heat dissipation fin dorsal part outward flange, be provided with bayonet socket, be provided with in inner side, described fan housing edge the draw-in groove cooperatively interacting with described bayonet socket.The design of bayonet socket and draw-in groove makes the installation and removal of fan all very convenient.
Described capillary channel cross section is triangle, and equivalent diameter is between 0.5～3.5mm.Such design makes described capillary channel produce very large capillary force at its sharp corner, and under identical equivalent diameter and the identical heating temperature difference, its evaporation heat transfer amount is larger than rectangle and circle tee section conduit.In addition, under this capillary dimensions, surface tension effects highlights, and the described dull and stereotyped autoexcitation capillary heat pipe of combined type cornue type inner surface tension force can overcome the impact of gravity, still has good heat transfer property in the time that level is installed even contrary gravity operation.
As a further improvement on the present invention, at the conduit inner surface spray metal of described base portion porous layer, and prepare one layer of polymeric hydrophobic layer at described side channels inner surface.Adopt the design of spray metal porous layer can increase greatly the nucleus of boiling and the effective heat exchange area on the evaporation section of base portion described in boiling process conduit inner surface, thereby effectively strengthen the boiling heat transfer intensity of described evaporation section; The design of one layer of polymeric hydrophobic layer is prepared in employing, can promote the generation of the dropwise condensation that condensing heat-exchange coefficient is very large, 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 described sidepiece condensation segment.
The present invention is a kind of for the high heat flux cpu chip dull and stereotyped autoexcitation capillary heat pipe of the combined type cornue type that the designs radiator that dispels the heat, 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 is without sintering or make the capillary wick in conduit, makes simple, with low cost; Heat pipe conduit hydraulic diameter is capillary dimensions, has weakened the impact that gravity flows and conducts heat intraductal working medium, and it can be moved by the even contrary gravity of level; Conduit cross section is triangle, makes capillary channel produce very large capillary force at its sharp corner, and under identical equivalent diameter and the identical heating temperature difference, its evaporation heat transfer amount is larger than rectangle and circle tee 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 spray metal porous layer and prepare polymer hydrophobic layer respectively, hardening constituent is answered boiling and the dropwise condensation heat exchange in active section respectively, has further improved the integral heat sink performance of radiator.
Brief description of the drawings
Fig. 1 is perspective view of the present invention;
Fig. 2 is stereochemical structure assembling schematic diagram 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 two-sided two-in-parallel combined type conduit side sectional view on metal substrate of the present invention;
Fig. 5 is the perforation schematic diagram of two-sided conduit.
Fig. 6 is the fastening fin structure schematic diagram of base portion evaporation section of the present invention;
Fig. 7 is base portion evaporation section conduit schematic cross-section of the present invention;
Fig. 8 is 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, 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
Describe the preferred technical solution of the present invention in detail below in conjunction with accompanying drawing.
As shown in Figure 1, 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 4 of combined type cornue type, a counter-lateral quadrents condensation segment inner fin group 3, a counter-lateral quadrents condensation segment 5, the 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 described combined type cornue type is square frame-shaped structures that formed through twice hot bending folding by a long narrow tabular autoexcitation capillary heat pipe, and its opening is positioned at top, and base portion and both sides are respectively evaporation section and condensation segment; Described long narrow tabular autoexcitation capillary heat pipe welds respectively one deck cover plate 10 by substrate 9 two sides and is sealed to form, described substrate 9 positive and negatives are carved with respectively many conduits, and the alternate layout of positive and negative conduit, described positive and negative conduit end correspondence position communicates, described conduit cross section is triangle, equivalent diameter is between 0.5～3.5mm, and at the conduit inner surface spray metal of described evaporation section porous layer 14, and prepare one layer of polymeric hydrophobic layer 15 at the conduit inner surface of described condensation segment.
The fastening fin 2 of described evaporation section comprises pedestal 11 and the fin 12 of processing on pedestal 11, and four jiaos on described pedestal 11 respectively have a flange 13, have screwed hole above, pass and fix for trip bolt 1.Described sidepiece condensation segment inner fin group 3 is positioned at the dull and stereotyped autoexcitation capillary heat pipe of described combined type cornue type 4 square frame-shaped inside configuration, and the outer fins set 5 of described sidepiece condensation segment is positioned at the dull and stereotyped autoexcitation capillary heat pipe of described combined type cornue type 4 square frame-shaped structure both sides; In the condensation segment of the dull and stereotyped autoexcitation capillary heat pipe of described combined type cornue type 4 both sides and described sidepiece condensation segment inner fin group 3, the outer fins set 5 of sidepiece condensation segment, correspondence position has screwed hole, passes and is connected and fixed for trip bolt 1.Outside described sidepiece condensation segment, on fins set 5 dorsal part outward flanges, be provided with bayonet socket 7, be provided with in described fan 6 inner sides, housing edge the draw-in groove 8 cooperatively interacting with described bayonet socket 7.
As shown in Figure 2, before assembling, first to each heat conduction contact-making surface be processed smooth and clean up, and the dull and stereotyped autoexcitation capillary heat pipe 4 of described square frame-shaped combined type cornue type is carried out to leakage check, then vacuumize the working medium that is filled with 30% ~ 60%, working medium kind can be selected according to working temperature and body material compatibility etc., as cold-producing mediums such as water, ammonia, ethanol, methyl alcohol, acetone, R123, and can play high specific heat capacity, the nano-fluid of high thermal conductivity coefficient etc. of enhanced heat exchange effect.Then, will described condensation segment inner fin group 3 and the outer fins set 5 of condensation segment and condensation segment between heat conduction contact-making surface on coat heat-conducting silicone grease, and utilize described trip bolt 1 that three is connected in series and is fitted tightly to be fixed up.Same, on the heat conduction contact-making surface between described base portion evaporation section and the fastening fin 2 of described evaporation section and heating cpu chip, coat heat-conducting silicone grease, utilize described trip bolt 1 through the screw on four jiaos of flanges 13 in the fastening fin 2 of described evaporation section and with mainboard on corresponding fixing threaded hole screw, described base portion evaporation section is fastened on described heating cpu chip.Finally, by the outer fins set 5 dorsal part outward flanges of described condensation segment and the fan 6 corresponding bayonet socket 7 in inner side, housing edge and draw-in grooves 8, described fan 6 is fixed to the back side at radiator body.
In the course of the work, the evaporation section of the dull and stereotyped autoexcitation capillary heat pipe of described combined type cornue type cpu heat absorbs needs the parts of heat radiation as heat that chip sent, working medium heats up, and gasification is rapid expands and boosts, promote working medium and flow to described condensation segment, working medium heat release condensation in this section, pressure drop, the heat discharging conducts to the inside and outside fins set of described condensation segment through tube wall, then relies on the cold airflow that described fan provides in the mode of forced convertion, heat to be taken away.Meanwhile, the condensation liquid phase working fluid in described condensation segment is back to again heat absorption evaporation again in described evaporation section.And so forth, working medium realizes self-oscillation and circulates between described evaporation section and condensation segment, and the condensation segment that the heat transportation that described chip is produced is extremely described is also discharged in surrounding space.
Fig. 4, Fig. 5 have provided the space structure of two-sided two-in-parallel combined type conduit on described metal substrate 9.As shown in the figure, for saving space, go out many capillary channels in 9 tow sides while of described high thermal conductivity metal (alloy) substrate machining, the alternate layout of positive and negative conduit, in corresponding position, the adjacent positive and negative conduit end of part, cut off the metallic walls of described positive and negative conduit and got through formation through channel 18, thereby described positive and negative conduit 16 and 17 is connected.By such mode, just can on high thermal conductivity metal (alloy) substrate 9 described in same, be processed into two mutual conduits compound, parallel with one another.Adding a cover after described high thermal conductivity metal (alloy) cover plate 10 welded seal, two closed type autoexcitation capillary heat exchanging pipes in parallel are just formed.Such design takes full advantage of the solid space of described high thermal conductivity metal (alloy) substrate 9, improve structural compactness, and when wherein have described in one closed type autoexcitation capillary heat pipe operational failure time, the another one closed type autoexcitation capillary heat pipe in parallel with it can continue to maintain the normal work of described radiator, thereby improved the functional reliability of the dull and stereotyped autoexcitation capillary heat pipe of described combined type cornue type cpu heat.The cross section of described capillary channel is triangle, and equivalent diameter is between 0.5 ~ 3.5mm.Adopt triangular-section conduit can make conduit sharp corner produce very large capillary force, under identical equivalent diameter and the identical heating temperature difference, its evaporation heat transfer amount is greater than rectangle and circle tee section conduit.In addition, under this capillary dimensions, the described dull and stereotyped autoexcitation capillary heat pipe of combined type cornue type inner surface tension force can overcome the impact of gravity, in the time that installing, level still there is good heat transfer property, and conduit is more, gravity effect is less, and in the time that the curved number of conduit is greater than 16, gravity is almost negligible on the impact of described adopting heat pipes for heat transfer performance.
High thermal conductivity metal (alloy) substrate, seal cover board pedestal and the fin of the described dull and stereotyped autoexcitation capillary heat pipe of combined type cornue type can be selected different materials according to condition of work, body material compatibility etc., as 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 described evaporation section, to process one deck average pore size is 20 ~ 100 μ m, and average thickness is 0.2 ~ 0.5mm, the metal porous coating that porosity is 30% ~ 45%.Described metal dust can be according to condition of work, baseplate material, select different materials from working medium compatibility etc., as copper (alloy) powder, and aluminium (alloy) powder, stainless steel powder etc.Adopt such design can increase greatly the nucleus of boiling and the effective heat exchange area on the conduit of evaporation section described in boiling process inner surface, thereby effectively strengthen the boiling heat transfer intensity of described evaporation section.
As shown in Figure 8, using plasma surface aggregate method, prepares one layer of polymeric hydrophobic layer at described condensation segment conduit inner surface, as prepared hexafluoropropylene polymeric layer, the poly-octafluorocyclobutane layer of red copper surface preparation etc. in brass surfaces.Adopt such design, can obtain the very large dropwise condensation of good condensing heat-exchange coefficient, 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 described condensation segment.
The present invention is a kind of for the high heat flux cpu chip dull and stereotyped autoexcitation capillary heat pipe of the combined type cornue type that the designs radiator that dispels the heat, 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 is without sintering or make the capillary wick in conduit, makes simple, with low cost; Heat pipe conduit hydraulic diameter is capillary dimensions, has weakened the impact that gravity flows and conducts heat intraductal working medium, and it can be moved by the even contrary gravity of level; Conduit cross section is triangle, makes capillary channel produce very large capillary force at its sharp corner, and under identical equivalent diameter and the identical heating temperature difference, its evaporation heat transfer amount is larger than rectangle and circle tee 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 spray metal porous layer and prepare polymer hydrophobic layer respectively, hardening constituent is answered 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 a combined type cornue type cpu heat, comprise heat pipe (4), fastening fin (2), heat dissipation fin (3, 5) and fan (6), it is characterized in that: described heat pipe is the dull and stereotyped autoexcitation capillary heat pipe of combined type cornue type (4), 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 evaporation section, sidepiece is condensation segment, in described base portion and sidepiece, be provided with capillary channel, the capillary channel of base portion is communicated with the capillary channel of described sidepiece, described capillary channel is arranged on the obverse and reverse of a substrate, the cover plate (10) of the described capillary channel of one sealing is all set on the obverse and reverse of substrate again, described base portion is close to and is fixed by described fastening fin (2) and cpu chip, described sidepiece and described heat dissipation fin (3, 5) be close to and interconnect, described fan (6) is fixed on the back side of described 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 channel of the obverse and reverse of the dull and stereotyped autoexcitation capillary heat pipe of described combined type cornue type (4) also connects mutually at part end position, forms two mutual closed type cornue type autoexcitation capillary heat pipies compound, parallel with one another on described substrate.
3. the dull and stereotyped autoexcitation capillary heat pipe of combined type cornue type as claimed in claim 1 cpu heat, is characterized in that: the capillary channel inner surface at described base portion is processed with metal porous layer; The capillary channel inner surface of described sidepiece has been prepared 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 described heat dissipation fin (5) dorsal part outward flange, be provided with bayonet socket (7), be provided with in inner side, described fan (6) housing edge the draw-in groove (8) cooperatively interacting with described bayonet socket (7).
5. the dull and stereotyped autoexcitation capillary heat pipe of the combined type cornue type as described in claim 1 or 2 or 3 cpu heat, is characterized in that: described capillary channel cross section is 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102683307A CN102683307A (en) | 2012-09-19 |
| CN102683307B true CN102683307B (en) | 2014-11-05 |
Family
ID=46815011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102683307B (en) |
Families Citing this family (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 |
| 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 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121802A (en) * | 2011-03-25 | 2011-07-13 | 长沙理工大学 | Plate-type pulsating heat pipe with double-side grooves |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0629683A (en) * | 1992-03-31 | 1994-02-04 | Furukawa Electric Co Ltd:The | Heat pipe type heat dissipation unit for electronic apparatus |
| FR2938323B1 (en) * | 2008-11-12 | 2010-12-24 | Astrium Sas | THERMAL REGULATION DEVICE WITH A NETWORK OF INTERCONNECTED CAPILLARY CALODUCES |
-
2012
- 2012-05-31 CN CN201210174280.9A patent/CN102683307B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121802A (en) * | 2011-03-25 | 2011-07-13 | 长沙理工大学 | Plate-type pulsating heat pipe with double-side grooves |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平6-29683A 1994.02.04 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102683307A (en) | 2012-09-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103188912A (en) | Lotus-type regular porous metal microchannel heat sink using liquid metal working medium | |
| CN103997877B (en) | High-thermal-flux-density temperature-equalization heat-dissipation device | |
| CN103307917A (en) | Micro-channel radiator | |
| CN106332529A (en) | Corrugated tube type micro-circulation radiator and micro-circulation heat exchange system | |
| CN105823360A (en) | Plate heat exchanger comprising staggered-arrangement heat pipe arrays | |
| CN102128552B (en) | Single-sided corrugated plate type pulsating heat pipe | |
| CN111083911B (en) | Composite liquid-cooled heat pipe radiator | |
| CN102683307B (en) | CPU (Central Processing Unit) radiator with combined corner-tube type flat self-excited capillary heat pipe | |
| CN100557367C (en) | A kind of large power plate integral type phase change heat-radiation method and radiator | |
| CN113959244B (en) | Double-evaporator condenser loop heat pipe | |
| WO2013016998A1 (en) | Fin-type heat dissipation device | |
| TWI795873B (en) | Integrated cooling module and electronic device including the same | |
| CN102853701A (en) | Evaporator for loop heat pipe and application of evaporator | |
| CN202032930U (en) | Double-sided channel plate-type pulsating heat pipe | |
| CN113660833A (en) | Heat radiator and high heat flux density communication machine box | |
| CN102646651A (en) | Thin hot plate structure | |
| WO2021253813A1 (en) | Thermal superconducting heat dissipation plate, heat dissipation device and 5g base station device | |
| CN111664733A (en) | Heat radiator combining micro-channel heat exchanger with heat pipe | |
| CN104613439A (en) | Radiator for LED device | |
| CN111315192A (en) | Liquid cooling type cold plate heat pipe heat exchange device | |
| CN202142519U (en) | Thin type hot plate structure | |
| CN201306960Y (en) | High-power loop type heat pipe radiating device | |
| WO2010060302A1 (en) | A heat pipe with arranged micro-pore tubes, its fabricating method and a heat exchanging system | |
| CN207969251U (en) | Finned heat pipe coupling radiator | |
| CN100498125C (en) | Evaporation box of hot end heat sink for semiconductor electronic refrigerator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Chengbin Inventor after: Chen Yongping Inventor after: Liu Xiangdong Inventor after: Xu Fei Inventor after: Shi Mingheng Inventor before: Chen Yongping Inventor before: Liu Xiangdong Inventor before: Xu Fei Inventor before: Shi Mingheng |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: CHEN YONGPING LIU XIANGDONG XU FEI SHI MINGHENG TO: ZHANG CHENGBIN CHEN YONGPING LIU XIANGDONG XU FEI SHI MINGHENG |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20150531 |
|
| EXPY | Termination of patent right or utility model |