CN106885485B - Hot end variable cross-section multi-pulsation cold end heat pipe radiator - Google Patents
Hot end variable cross-section multi-pulsation cold end heat pipe radiator Download PDFInfo
- Publication number
- CN106885485B CN106885485B CN201710104995.XA CN201710104995A CN106885485B CN 106885485 B CN106885485 B CN 106885485B CN 201710104995 A CN201710104995 A CN 201710104995A CN 106885485 B CN106885485 B CN 106885485B
- Authority
- CN
- China
- Prior art keywords
- pulsation
- hot end
- cold end
- cover plate
- variable cross
- 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
- 230000010349 pulsation Effects 0.000 claims abstract description 122
- 230000017525 heat dissipation Effects 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims description 14
- 238000003466 welding Methods 0.000 claims description 10
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 210000001367 artery Anatomy 0.000 claims description 4
- 239000010962 carbon steel Substances 0.000 claims description 4
- 210000003462 vein Anatomy 0.000 claims description 4
- 239000012153 distilled water Substances 0.000 claims description 3
- 235000019441 ethanol Nutrition 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910000838 Al alloy Inorganic materials 0.000 claims description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 2
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 239000000908 ammonium hydroxide Substances 0.000 claims description 2
- 239000006260 foam Substances 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 238000012546 transfer Methods 0.000 abstract description 26
- 238000010438 heat treatment Methods 0.000 abstract description 22
- 238000009833 condensation Methods 0.000 abstract description 15
- 230000005494 condensation Effects 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 11
- 239000007788 liquid Substances 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 7
- 238000010992 reflux Methods 0.000 abstract description 6
- 238000001704 evaporation Methods 0.000 abstract description 5
- 230000008020 evaporation Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 12
- 230000004907 flux Effects 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 5
- 230000003321 amplification Effects 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 229910000553 6063 aluminium alloy Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000004377 microelectronic Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 206010021703 Indifference Diseases 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000003416 augmentation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 125000005909 ethyl alcohol group Chemical group 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 208000021760 high fever Diseases 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 150000002500 ions Chemical group 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 230000000541 pulsatile effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000002887 superconductor Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- F28D15/04—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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The utility model provides a many ripples cold end heat pipe radiator of hot end variable cross section, many ripples cold end heat pipe radiator of hot end variable cross section includes pulsation cold end, hot end, its characterized in that: the pulsation cold end is a heat dissipation plate body internally provided with a plurality of pulsation channels; the hot end is a hollow cavity, and working media and a capillary liquid absorption core are filled in the cavity; and the upper cover plate of the hot end hollow cavity is provided with a plurality of cold end interfaces, and each cold end interface is provided with one pulsation cold end, so that a pulsation channel of the pulsation cold end is communicated with the hot end hollow cavity. The invention has simple structure, easy preparation, can be used both horizontally and vertically, adopts a variable cross-section structure, can increase the pressure-bearing capacity of the heating pipe, particularly enlarges the heat dissipation area of the cold end, adopts pulse heat transfer and porous medium heat transfer modes in two thermal processes of evaporation and condensation, effectively improves the heat and mass transfer performance, has good uniform reflux and temperature uniformity, and is suitable for industrial manufacture.
Description
Technical field
The invention discloses a kind of hot end variable cross-section mostly pulsation cool side heat pipes radiators, belong to heat transfer enhancement technology field.
Technical background
By the traction of development in science and technology objective trend, some vital microelectronics, photoelectron element, such as field IC
Large scale integrated chip, the TR component of military industry field Connectors for Active Phased Array Radar, the LED chip of lighting area, laser neck
The pumping source and gain media of the great-power solid laser in domain, the Condensation photovoltaic battery of photovoltaic art etc., always all towards
High speed, integrated, miniaturization path are fast-developing.At the same time, an inevitable problem occurs immediately, that is, runs
When heating problem, it results in component fluctuation of service, or even burns out, therefore says from thermal conduction study angle, and this kind of device can unite
It is classified as high heat flux density planar heating body.In addition, this kind of component is in use, mounting means may level or upright two
Kind, with the development of technology, also there is the occasion of many applying electronic chips, due to special circumstances such as position is narrow, carrier limitations
Under, upright installation is used, absolute quantity is also very big, but due to historical reasons, problem few to upright installation heat dissipation research
It is very prominent, at one of thermal technology scientific and technological circle research hotspot.
Although above-mentioned component function is different, there are three important similar features for tool: first is that heat flow density is non-
Chang Gao, second is that having planar profile, three vertical and horizontal dual-purposes.
When high heat flow density originates from the operation of high heat flux density planar heating body, because energy efficient transfer efficiency is low or energy
Put into it is excessive so that there is high heat flux density in the minimum volume of planar heating body or area, such as the mean heat flux of IC chip
Density is up to 300~500W/m2, LED is up to 300W/m2, TR component is up to 150W/m2, gain media is up to 100W/m2、1000
Times Condensation photovoltaic battery is up to 500W/m2.Further, since the difference of high heat flux density planar heating body internal microstructure operation,
Can also there be heat flow density exception high point.
It is practical to be also by heat transfer theory it is found that planar heating body bulk temperature will be made excessively high for above-mentioned two height and temperature is uneven
So.
Studies have shown that as microelectronics, opto-electronic device, the operating temperature of planar heating body has a constraint, in general,
Its operating temperature allowed is between 75~120 DEG C, and different types of planar heating body has different permissible values.When temperature is more than
When permissible value, the working performance of planar heating body and service life will decline to a great extent, or even burn.Therefore, to enable planar heating body
Enough good, stable, safe operations, it is most crucial to carry out good cooling to it.
Since, permission operating temperature and uniform temperature etc. narrow by installation site limit, the heat dissipation dress of planar heating body configuration
It sets and must satisfy following technical requirements: planar heat transfer, excellent heat transfer properties, uniform temperature are good, area occupied is small, heat dissipation area is big,
Simple and reliable, vertical and horizontal dual-purpose.It is required that quite high.
Heat pipe is referred to as the superconductor of heat, has excellent heat transfer properties, non-power consumption, occupied space and area are small, are
It unites the advantages that simple and reliable.For this purpose, scientific worker is directed to such high heat flux density planar heating body, have conducted extensive research,
A variety of so-called plane heat pipes or flat-plate heat pipe with contact plane are developed, to solve the problems, such as its cooling.
But from develop and actual use situation in terms of, the heat pipe with plane evaporation ends researched and developed there is also many deficiencies,
How it is scientific and effective solve planar heating body cooling, be still a problem to be solved.The problem does not solve seriously to make
The technology of about above-mentioned key areas develops, and therefore, researching and developing heat sinking technology for this problem is a necessity and urgent work
Make.
The related patents technical situation applied at present is summarized as follows.
Chinese patent ZL201110074375.9 proposes a kind of double-sided channel plate-type pulsating heat pipe, by board-like hollow housing
Periodical folded plate is inserted to close.Folded plate folding rib therein forms a plurality of pulsation conduit by spot welding with inner walls, pulses
When conduit can make heat pipe run, working medium flows in pipe in a kind of pulsatile impact of random high frequency, can significant augmentation of heat transfer
Effect.The characteristics of heat pipe is that shape is simple plate body, is convenient for and the object contact that radiate, and heat-sinking capability is strong, suitable for electronics
The cooling of component.By " the flat-plate heat pipe heat transfer property based on air conditioner energy recycling " (Central South University's journal (natural science
Version) the 1st phase of volume 46) discovery, when to simulate planar heating body inclination angle be 60 °, heating power is 50W, equivalent heat conductivity
Reach 200W/ (cm DEG C), be more than 1200 times of its case material thermal coefficient, the capacity of heat transmission greatly improves, but its surface temperature
Degree still reaches 75 DEG C, i.e., will be more than the permission temperature value of IC chip.Although from structure and heat transfer property, plate type pulsating heat pipe
It is suitble to the cooling of planar heating body, and reflects that the equivalent heat conductivity of the capacity of heat transmission is greatly enhanced, but reality still can not
Meet the heat dissipation needs of high heat flux density.According to the analysis, heat output be it is directly proportional to the product of thermal coefficient and heat transfer area,
Only thermal coefficient height does not represent that heat output is big, must also have appropriately sized heat dissipation area, the inadequate heat of heat dissipation area is still not
It can sufficiently distribute, cause temperature excessively high.But as plate type pulsating heat pipe, the cold end of heat spreading function is played by working space and working medium stream
The limitation of motivation reason, it is impossible to it is designed very long, it is therefore, generally existing for the simple plate type pulsating heat pipe of high heat flux density
The inadequate weakness of cold end heat dissipation area.Chinese patent 200810119311.4 proposes a kind of plate for electronic device cooling
Heat pipe and its processing technology, the flat-plate heat pipe is by a section in wing in the box body of frame-like and its built-in W-shaped wave plate
Piece is constituted.Inner fin is contacted with box body upper and lower end face, and box space is separated into several poroid channels, liquid filling is vacuumized and forms heat
Pipe.The lower end surface of box body is heat absorbing end, and upper surface is colling end, can increase by one layer of W-shaped orifice plate in upper surface to reinforce cooling
As outer fin, on fan is set again.Its structure and diabatic process are analyzed, it is found that there are the following problems for the flat-plate heat pipe.One
It is that the upper and lower end face of heat pipe is derived from due to heat pipe cool and heat ends, the large scale direction of non-inner space thereby results in working medium ensemble stream
It moves as up and down direction, and distance is very short up and down, it is meant that conducting heat, beneficial convection action is substantially not present, and is influenced working medium side and is changed
Thermal effect, to weaken the overall heat transfer ability of heat pipe.Second is that as simple flat-plate heat pipe, on limited floor space,
Bigger heat dissipation area can not be arranged, so that heat dissipation area is inadequate.Third is that the flat-plate heat pipe does not use heat-transfer capability
Stronger boiler is not pulsating heat pipe, and evaporation ends are only horizontally mounted.Chinese patent ZL200820224845.9 is proposed
A kind of combined planar heat pipe radiator device with composite inner cavity.Composite inner cavity Combined type heat-pipe described in the patent,
Its structure is the anti-Π that one piece of hollow plate is closed with one to multiple piece of parallel hollow flat panel, the internal connection outside of formation
Shape structure forms, and wherein level board plays evaporator section, other parallel-plates play condensation segment.It is also being steamed to increase heat dissipation area
The outer surface of hair section and condensation segment is mounted with serial radiated rib.Its structure and diabatic process are analyzed, it is found that the structure has spirit
Arrangement condensation segment living is to adjust the effectiveness of heat dissipation area conducive to adjustment condensation segment number.But its use process has following deficiency:
First is that drum mutant form is easy after being pressurized inside evaporator section plate without reinforcement structure, to influence the contact with heater；Second is that by
It is slab construction in evaporator section, lower planes are in the same size, when needing to increase condensation segment and increasing heat dissipation area quantity, up and down
Plane must expand simultaneously, cause lower plane (i.e. contact surface) area much larger than cooled body area, dissipate against in planar heating body
The small requirement of thermal area occupied；Third is that inside heat pipe pulse free conduit, cannot apply the stronger boiler of heat-transfer capability,
Fourth is that it is horizontal plate heat pipe that the heat pipe is practical, be not suitable for the heat dissipation of vertical plane heater.Chinese patent
200410091536.5 proposing a kind of agglomerated flat-tubing hot-pipe radiator.The heat pipe relies on multiple and rows of flat pipes and a flat box
The perforation of side connects, and to form the structure being closed outside internal connection, flat tube is condensation segment, and flat box is evaporator section, to increase
Heat dissipation area is externally provided with intensive fin in flat tube, to prevent the flat box deformation of evaporator section from having installed support additional in two interplanar of box or so,
The structure has flexible arrangement condensation segment, is to adjust the effectiveness of heat dissipation area conducive to adjustment condensation segment number.Analysis finds this specially
Benefit exists following insufficient: first is that the flat box of evaporator section improves voltage endurance capability using support is installed additional, not as thin wall box effect
It can guarantee, and will increase multiple solder joints, be unfavorable for processing and being formed vacuum；Two, three is corresponding with ZL200820224845.9
Second, third puts identical；Fourth is that the fin direction of condensation segment flat tube and flat tube are axially vertical, fin can only cannot using welding
Using with flat tube one drawing and forming, process it is extremely complex.
Analysis finds that use process has following deficiency: first is that the flat box of evaporator section is improved using installation support described in patent
Pressure-resistant anti-deformation, effect cannot guarantee very well, and will increase multiple solder joints, be unfavorable for forming vacuum；Two, three with
Corresponding second, third of ZL200820224845.9 is put identical；Fourth is that its condensation segment inner flow passage cross section is rectangle, condensate liquid
It will be flowed down vertically along the big wall in side under the effect of gravity, and then concentrate from condensation end lower part and flow into evaporation ends lower part, this concentration
Reflux will lead to that evaporator section top lacks working medium and temperature increases, also make cooled electronic device upper temp higher and temperature not
, electronic device safety is endangered；Fifth is that condensation segment flat tubular fin and flat tube are axially vertical, fin cannot be integrally drawn into flat tube
Type is processed extremely complex.
It can be seen that involved heat pipe because of the existing defects in structure or heat transfer theory from data disclosed above, cause to radiate
It is ineffective, the radiating requirements of the high heat flux density planar heating body cannot be met very well, general character defect is: 1, can not or
It cannot be advantageously used in the heat dissipation of upright chip, it cannot vertical and horizontal dual-purpose；2, hot end cross-sectional area indifference cannot coordinate diminution and inhale
Thermocontact area and the relationship for expanding heat dissipation area；3, two thermal processions of evaporative condenser are using same heat-transfer mechanism,
The process of different mechanism does not organically combine, and influences heat dissipation effect；4, heat pipe pressure-bearing Resolving probiems are undesirable, influence heat dissipation effect
And radiator product quality；5, uniformly reflux and uniform temperature problem are not handled rationally.
Summary of the invention
It is an object of the invention to overcome the deficiency of the prior art, provides a kind of with " planar heat transfer, heat transfer property are excellent
It is different, uniform temperature is good, area occupied is small, heat dissipation area is big, simple and reliable, vertical and horizontal dual-purpose " novel heat pipe radiator, be used for high fever
The cooling of current density planar heating body.
A kind of hot end variable cross-section proposed by the present invention mostly pulsation cool side heat pipes radiator, is realized by following proposal
:
A kind of hot end variable cross-section is pulsed cool side heat pipes radiator more, and the hot end variable cross-section is pulsed cool side heat pipes radiator more
Including the cold end 1, hot end 2 of pulsing, it is characterised in that: the pulsation cold end 1 is the interior heat dissipation plate body for setting multiple pulsation channels 3；Institute
Hot end is stated for hollow cavity 4, filled with working medium and capillary wick 5 in the cavity；On the upper cover plate 6 of hot end hollow cavity 4
Equipped with multiple cold end interfaces 7, each cold end interface 7 is equipped with the pulsation cold end 1, keeps the pulsation of pulsation cold end 1 logical
Road 3 is connected to the hollow cavity 4 in hot end 2.
6 area of upper cover plate of the hot end hollow cavity 4 is more than or equal to 8 area of lower cover plate, when using ladder amplification section
When method, every amplification can once increase the big right angle pressure-bearing hoop of two anti-pressure abilities or pressure-bearing side.Area ratio can between 1~6 times,
It is preferred that 2~4 times, more preferable 2~3 times.
When upper cover plate 6, lower cover plate 8 are vertically arranged, the vertical line of mass center and the upper and lower lids can not be conllinear, upper cover
The offset distance that plate mass center is up deviated than lower cover plate mass center is 0~2.5 times of 8 equivalent diameter of lower cover plate (or qualitative size),
Ensure that the pulsation channel 3 in pulsation cold end 1 is not filled in steady operation by liquid refrigerant.
The pulsation cold end 1 is parallel to each other, pulsation cold end 1 and upper cover plate 6 angle α be 15 °~165 °, preferably 45 °~
135 °, more preferable 75 °~105 °, optimal is 90 °.
Value≤5mm of drainage distance 11 of the capillary wick 5 filled in the hot end hollow cavity 4 away from upper cover plate 6, it is excellent
Choosing≤3mm, more preferably≤2mm.
The capillary wick 5 is selected from least one of the silk screen of metal, foam；
The material of the capillary wick 5 is selected from one of metallic copper, aluminium, iron, carbon steel, stainless steel；
Pulsation channel 3 in each pulsation cold end 1 is parallel to each other, and one end is connected to the hollow cavity in hot end 2, the other end
It is interconnected, connection spatial altitude 12 is 4~10mm, preferably 5~9mm, more preferable 6~8mm；The pulsation channel and plumb line
The angle of opposite direction is 0 °~85 °；
The 1 peripheral hardware radiating fin 13 of pulsation cold end, it is described pulsation cold end cross section remove radiating fin after gabarit be
Parallelogram or parallelogram short side are dissimilated as the figure of arc.
3 cross section of pulsation channel is parallelogram, triangle, trapezoidal, polygon, circle, elliptical one kind.
The pulsation cold end 1 and hot end hollow cavity 4 can also pass through necessary cutting, mutually embedding by two pieces of symmetrical inclined tooth plates 14
It engages, be formed by welding, be wherein provided with cold end interface 7 on the symmetrical inclined tooth plate 14 in hot end 2；Hair is filled before the welding of hot end hollow cavity
Thin liquid-sucking core.
The symmetrical inclined tooth plate 14 is one piece for cold end 1 of pulsing uniformly engagement helical teeth when there is straight-tooth
Frid, straight-tooth are used as radiating fin 13, and helical teeth is used as engagement, and be one piece for hot end hollow cavity 4 has uniformly engagement oblique on one side
The frid of tooth.
The pulsation channel 3 is capillary, and equivalent diameter is 0.5~5mm,.
The pulsation cold end 1, hot end 2 are manufactured using identical material, and material is selected from carbon steel, stainless steel, aluminium alloy, copper alloy
One of,
The working medium is selected from one of deionized-distilled water, ethyl alcohol, acetone, ammonium hydroxide, methanol, R141b.
Technical effect of the invention
Hot end variable cross-section proposed by the present invention pulses cool side heat pipes heat sink applications in high heat flux density planar heating body more
It will have the following advantages that and effect.
The hot end variable cross-section mostly pulsation cool side heat pipes radiator is formed by cold end, hot end.The cold end has equivalent straight
Diameter meets the pulsation channel of Bond number requirement, therefore conducts heat and can be substantially improved into pulsation mechanism model, heat-transfer capability, and equivalent is led
Metal material used in hot coefficient ratio improves 1230 times, and cold end is precisely entire high heat flux density planar heating body, radiates cold
But the cooling link of the maximum air of thermal resistance during, the link heat transfer intensification is to resolving by the radiating and cooling relationship of cold object
It is great.The capillary wick almost fills out in the cavity of hot end, and hot end is turned into a Porous Media at this time, and capillary is seeped
Inhaling principle can make liquid-sucking core play the role of both sides: first is that the drainage of cold end reflux, this is because pulsation channel sheet
Body is capillary, collective effect of the condensate liquid in pulsation channel outlet by multi-channel capillary power and gravity, and capillary force is big
It in gravity, is such as participated in without other effects, condensate liquid will stay on outlet, and circulation, which is destroyed, leads to heat pipe failure, cavity liquid-sucking core
In the presence of joined a downward capillary force, so that condensate liquid is flowed into hot end and setting up working medium circulation, heat pipe can just continue working；Two
It is that hot end is made to evaporate the heat transfer that is changed under porous media, because working medium energy automatic absorbing and being distributed in capillary under imbibition effect
In liquid absorbent wick, the uniform presence of working medium needed for evaporating ensure that, to ensure that the evaporability and uniform temperature of evaporator section.Institute
It states hot end variable cross-section and refers to that sectional area is amplified from hot end to cold end, amplification can achieve three effects step by step: first is that increasing
Cold end installation site, second is that reducing the area occupied of cooled equipment；Third is that can to increase by 2 anti-pressure abilities big for every grade of amplification
Right angle pressure-bearing hoop or pressure-bearing side, enhance hot end bearing capacity.The washability of the pulsation cold end angle is the peace of particular device
It fills, Steric clashes is avoided to provide convenience, be also conducive to working medium and flow back.The pulsation channel is parallel to each other, the sky of one end and hot end
The connection of chambers of the heart body, the other end are interconnected, on the one hand, realizing the mass transfer with hot end working medium on the other hand by liquid-sucking core can make
Each pulsation channel communication with one another in parallel of cold end of pulsing, adaptive balance, so that working medium distribution is more average, it is independent in the height direction
Condensate liquid in conduit uniform and stable can enter hot end, both beneficial to heat pipe it is stable and also beneficial to working medium in pulsation channel
It evenly distributes.When upper cover plate, lower cover plate are vertically arranged, hot end upper and lower cover plates mass center vertical line is not conllinear, can make on hot end
Lower plane spatially misplaces, and pulsation cold end position can be improved for uprightly cooling down situation, working medium is avoided to flood pulsation cold end
Lower layer's pulsation channel, is conducive to heat-pipe working medium proper flow and heat exchange；There is the design feature of parallel port, institute based on pulsation cold end
It is relatively independent and carried out connection in the end to state pulsation channel, on the one hand makes working medium distribution more average, on the other hand in height
Spending the condensate liquid on direction in independent channel uniform and stable can enter hot end, to before the cooling down and overcome of vertical plane heater
The concentration reflux problem chatted has found solution.
In conclusion the configuration of the present invention is simple, preparation is easy, can vertical and horizontal dual-purpose can be increased using variable section structure
Boiler and more is respectively adopted in heat pipe pressure-bearing ability, especially expansion cold end heat dissipation area, two thermal processions of evaporative condenser
Hole medium heat-transfer mode, effectively promotion heat and mass transfer performance, uniformly reflux and uniform temperature are good, are suitable for industrialization manufacture.
Detailed description of the invention
The main view of the hot end variable cross-section of 1 embodiment 1 of attached drawing mostly pulsation cool side heat pipes radiator.
The top view of 2 attached drawing 1 of attached drawing.
The side view of 3 attached drawing 1 of attached drawing.
The symmetrical inclined toothed plate structure figure of 4 embodiment 1 of attached drawing.
The helical teeth plate of 5 embodiment 1 of attached drawing mutually scheme by embedding engagement.
6 upper cover plate structure chart of attached drawing.
7 embodiment of attached drawing, two main view
8 embodiment of attached drawing, two top view
9 embodiment of attached drawing, three main view.
10 embodiment of attached drawing, three top view
11 embodiment of attached drawing, three side view
12 example IV main view of attached drawing
In figure: 1- pulsation cold end, the hot end 2-, 3- pulsation channel, 4- hollow cavity, 5- capillary wick, 6- upper cover plate, 7-
Cold end interface, 8- lower cover plate, 11- drain distance, 12- spatial altitude, 13 radiating fins, 14- helical teeth plate
Each specific embodiment is illustrated below in conjunction with attached drawing.Embodiment is merely to illustrate the present invention rather than limitation
The scope of the present invention.Those skilled in the art's various modifications made for the present invention after reading the content of present invention, also belong to this
The restriction range of invention the appended claims.
Embodiment one
Referring to attached drawing 1,2,3,4,5,6, a kind of hot end variable cross-section is pulsed cool side heat pipes radiator more, and the hot end, which becomes, to be cut
Face mostly pulsation cool side heat pipes radiator includes pulsation cold end 1, hot end 2, and multiple pulsation channels 3 are equipped in the pulsation cold end 1
Heat dissipation plate body；The hot end is hollow cavity 4, in the cavity filled with working medium and capillary wick 5；It is empty in the hot end
The upper cover plate 6 of chambers of the heart body 4 is equipped with multiple cold end interfaces 7, each cold end interface 7 is equipped with the pulsation cold end 1, makes
The pulsation channel 3 of pulsation cold end 1 is connected to the hollow cavity 4 in hot end 2；
6 area of upper cover plate of the hot end hollow cavity 4 is 2.5 times of 8 area of lower cover plate, and amplifies section using ladder
Method increases the big right angle pressure-bearing hoop of two anti-pressure abilities；
The pulsation cold end 1 is parallel to each other, and the angle α of pulsation cold end 1 and upper cover plate 6 is 90 °；
The angle β of the pulsation channel 3 and plumb line opposite direction is 0 °；
The value of drainage distance 11 of the capillary wick 5 filled in the hot end hollow cavity 4 away from upper cover plate 6 is 2mm；
The pulsation channel 3 of the pulsation cold end 1 carries out connection in the end far from hot end 2 and is isolated from the outside world, and connection is empty
Between height 12 be 8mm；
The 1 peripheral hardware radiating fin 13 of pulsation cold end, it is described pulsation cold end cross section remove radiating fin after gabarit be
Rectangle；3 cross section of pulsation channel is parallelogram；
The pulsation cold end 1 is by two pieces of symmetrical inclined tooth plates 14 by engaging, being formed by welding；
The symmetrical inclined tooth plate 14 is one piece of frid for having uniformly engagement helical teeth when there is straight-tooth, and helical teeth, which is used as, to be nibbled
It closes；
The capillary wick 5 is stainless steel cloth；
The pulsation channel 3 is capillary, equivalent diameter 1.1mm；
The pulsation cold end 1, hot end 2 are manufactured using identical material, and material is stainless steel；
The working medium is ion distilled water.
Embodiment two
Referring to attached drawing 7,8, a kind of hot end variable cross-section is pulsed cool side heat pipes radiator more, and the hot end variable cross-section is pulsed cold more
Holding heat-pipe radiator includes pulsation cold end 1, hot end 2, and the heat dissipation plate body in multiple pulsation channels 3 is equipped in the pulsation cold end 1；
The hot end is hollow cavity 4, in the cavity filled with working medium and capillary wick 5；In the upper of the hot end hollow cavity 4
Cover board 6 is equipped with multiple cold end interfaces 7, each cold end interface 7 is equipped with the pulsation cold end 1, makes cold end 1 of pulsing
Pulsation channel 3 is connected to the hollow cavity 4 in hot end 2；
6 area of upper cover plate of the hot end hollow cavity 4 is 2.0 times of 8 area of lower cover plate, and amplifies section using ladder
Method increases the big right angle pressure-bearing hoop of two anti-pressure abilities；
The pulsation cold end 1 is parallel to each other, and the angle α of pulsation cold end 1 and upper cover plate 6 is 75 °；
The axis in the pulsation channel 3 and the angle β of 6 vertical line of upper cover plate are 15 °；
The value of drainage distance 11 of the capillary wick 5 filled in the hot end hollow cavity 4 away from upper cover plate 6 is 1mm；
The pulsation channel 3 of the pulsation cold end 1 carries out connection in the end far from hot end 2 and is isolated from the outside world, and connection is empty
Between height 12 be 5mm；
The 1 peripheral hardware radiating fin 13 of pulsation cold end, it is described pulsation cold end cross section remove radiating fin after gabarit be
Rectangle；3 cross section of pulsation channel is parallelogram；
The pulsation cold end 1 is by two pieces of symmetrical inclined tooth plates 14 by engaging, being formed by welding；
The symmetrical inclined tooth plate 14 is one piece of frid for having uniformly engagement helical teeth when there is straight-tooth, and helical teeth, which is used as, to be nibbled
It closes；
The capillary wick 5 is 6063 aluminium wire nettings；
The pulsation channel 3 is capillary, equivalent diameter 1.5mm；
The pulsation cold end 1, hot end 2 are manufactured using identical material, and material is 6063 aluminium alloys；
The working medium is acetone.
Embodiment three
Referring to attached drawing 9,10,11, a kind of hot end variable cross-section is pulsed cool side heat pipes radiator more, the more arteries and veins of hot end variable cross-section
Dynamic cool side heat pipes radiator includes pulsation cold end 1, hot end 2, and the heat dissipation in multiple pulsation channels 3 is equipped in the pulsation cold end 1
Plate body；The hot end is hollow cavity 4, in the cavity filled with working medium and capillary wick 5；In the hot end hollow cavity
4 upper cover plate 6 is equipped with multiple cold end interfaces 7, each cold end interface 7 is equipped with the pulsation cold end 1, makes to pulse cold
The pulsation channel 3 at end 1 is connected to the hollow cavity 4 in hot end 2；
6 area of upper cover plate of the hot end hollow cavity 4 is 3.5 times of 8 area of lower cover plate, and amplifies section using ladder
Method increases the big right angle pressure-bearing side of 2 anti-pressure abilities；
The upper and lower lids mass center and the vertical line of upper and lower lids be not conllinear, and mass center deviation of plumb line distance is that lower cover plate 8 is worked as
Measure 2.0 times of diameter (or qualitative size).
The pulsation cold end 1 is parallel to each other, and the angle α of pulsation cold end 1 and upper cover plate 6 is 90 °；
The axis in the pulsation channel 3 and the angle β of 6 vertical line of upper cover plate are 75 °；
The value of drainage distance 11 of the capillary wick 5 filled in the hot end hollow cavity 4 away from upper cover plate 6 is 3mm；
The pulsation channel 3 of the pulsation cold end 1 carries out connection in the end far from hot end 2 and is isolated from the outside world, and connection is empty
Between height 12 be 6mm；
The 1 peripheral hardware radiating fin 13 of pulsation cold end, it is described pulsation cold end cross section remove radiating fin after gabarit be
Rectangle；3 cross section of pulsation channel is rectangle；
The pulsation cold end 1 is by two pieces of symmetrical inclined tooth plates 14 by engaging, being formed by welding；
The symmetrical inclined tooth plate 14 is one piece of frid for having uniformly engagement helical teeth when there is straight-tooth, and helical teeth, which is used as, to be nibbled
It closes；
The capillary wick 5 is red copper silk screen；
The pulsation channel 3 is capillary, equivalent diameter 2.0mm；
The pulsation cold end 1, hot end 2 are manufactured using identical material, and material is red copper；
The working medium is ethyl alcohol.
Example IV
Referring to attached drawing 12, a kind of hot end variable cross-section is pulsed cool side heat pipes radiator more, and the hot end variable cross-section is pulsed cold more
Holding heat-pipe radiator includes pulsation cold end 1, hot end 2, and the heat dissipation plate body in multiple pulsation channels 3 is equipped in the pulsation cold end 1；
The hot end is hollow cavity 4, in the cavity filled with working medium and capillary wick 5；In the upper of the hot end hollow cavity 4
Cover board 6 is equipped with multiple cold end interfaces 7, each cold end interface 7 is equipped with the pulsation cold end 1, makes cold end 1 of pulsing
Pulsation channel 3 is connected to the hollow cavity 4 in hot end 2；
6 area of upper cover plate of the hot end hollow cavity 4 is 1.0 times of 8 area of lower cover plate；
The upper and lower lids mass center is conllinear with the vertical line of upper and lower lids, and mass center deviation of plumb line distance is 8 equivalent of lower cover plate
0 times of diameter (or qualitative size).
The pulsation cold end 1 is parallel to each other, and the angle α of pulsation cold end 1 and upper cover plate 6 is 90 °；
The axis in the pulsation channel 3 and the angle β of 6 vertical line of upper cover plate are 68 °；
The value of drainage distance 11 of the capillary wick 5 filled in the hot end hollow cavity 4 away from upper cover plate 6 is 4mm；
The pulsation channel 3 of the pulsation cold end 1 carries out connection in the end far from hot end 2 and is isolated from the outside world, and connection is empty
Between height 12 be 4mm；
The 1 peripheral hardware radiating fin 13 of pulsation cold end, it is described pulsation cold end cross section remove radiating fin after gabarit be
Rectangle；3 cross section of pulsation channel is parallelogram；
The pulsation cold end 1 is by two pieces of symmetrical inclined tooth plates 14 by engaging, being formed by welding；
The symmetrical inclined tooth plate 14 is one piece of frid for having uniformly engagement helical teeth when there is straight-tooth, and helical teeth, which is used as, to be nibbled
It closes；
The capillary wick 5 is red copper silk screen；
The pulsation channel 3 is capillary, equivalent diameter 3.0mm；
The pulsation cold end 1, hot end 2 are manufactured using identical material, and material is red copper；
The working medium is methanol.
Claims (10)
- The cool side heat pipes radiator 1. a kind of hot end variable cross-section is pulsed more, the hot end variable cross-section mostly pulsation cool side heat pipes radiator packet Include pulsation cold end, hot end, it is characterised in that: the pulsation cold end is the interior heat dissipation plate body for setting multiple pulsation channels；The hot end For hollow cavity, filled with working medium and capillary wick in cavity；Multiple cold ends are equipped on the upper cover plate of hot end hollow cavity to connect Mouthful, each cold end interface is equipped with the pulsation cold end, makes the hollow cavity in the pulsation channel and hot end of pulsation cold end Connection fills capillary wick before the welding of hot end hollow cavity.
- The cool side heat pipes radiator 2. a kind of hot end variable cross-section according to claim 1 is pulsed more, it is characterised in that: hot end is empty The upper cover plate suqare of chambers of the heart body is greater than lower cover plate suqare, and it does not include 1 that upper cover plate and lower cover plate area ratio, which are 1~6,；When upper cover plate, When lower cover plate is vertically arranged, the vertical line of the upper and lower lids mass center and the upper and lower lids is conllinear or not conllinear, upper cover plate matter The heart is than 0~2.5 times that the offset distance that lower cover plate mass center up deviates is lower cover plate equivalent diameter.
- The cool side heat pipes radiator 3. a kind of hot end variable cross-section according to claim 1 is pulsed more, it is characterised in that: the arteries and veins Dynamic cold end is parallel to each other, and the angle of cold end of pulsing and upper cover plate is 15 °~165 °.
- The cool side heat pipes radiator 4. a kind of hot end variable cross-section according to claim 1 is pulsed more, it is characterised in that: hot end is empty Drainage distance≤5mm of the capillary wick filled in chambers of the heart body away from upper cover plate.
- The cool side heat pipes radiator 5. a kind of hot end variable cross-section according to claim 4 is pulsed more, it is characterised in that: capillary is inhaled Wick-containing is selected from least one of the silk screen of metal, foam；The metal is in metallic copper, aluminium, iron, carbon steel, stainless steel It is a kind of.
- 6. a kind of hot end variable cross-section described in -5 any one is pulsed cool side heat pipes radiator more according to claim 1, feature Be: the pulsation channel in each pulsation cold end is parallel to each other, and one end is connected to the hollow cavity in hot end, and the other end mutually interconnects It is logical；The angle of the pulsation channel and plumb line opposite direction is 0 °~85 °.
- The cool side heat pipes radiator 7. a kind of hot end variable cross-section according to claim 6 is pulsed more, it is characterised in that: pulsation is logical Road is capillary, and equivalent diameter is 0.5~5mm.
- The cool side heat pipes radiator 8. a kind of hot end variable cross-section according to claim 7 is pulsed more, it is characterised in that: each arteries and veins Dynamic cold end peripheral hardware radiating fin.
- The cool side heat pipes radiator 9. a kind of hot end variable cross-section according to claim 8 is pulsed more, it is characterised in that: the arteries and veins Dynamic cold end, hot end are manufactured using identical material, and material is selected from one of carbon steel, stainless steel, aluminium alloy, copper alloy, working medium choosing From one of deionized-distilled water, ethyl alcohol, acetone, ammonium hydroxide, methanol, R141b.
- The cool side heat pipes radiator 10. a kind of hot end variable cross-section according to claim 9 is pulsed more, it is characterised in that: pulsation Cold end and hot end hollow cavity by being formed by welding again after the mutually embedding engagement in several parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710104995.XA CN106885485B (en) | 2017-02-25 | 2017-02-25 | Hot end variable cross-section multi-pulsation cold end heat pipe radiator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710104995.XA CN106885485B (en) | 2017-02-25 | 2017-02-25 | Hot end variable cross-section multi-pulsation cold end heat pipe radiator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106885485A CN106885485A (en) | 2017-06-23 |
| CN106885485B true CN106885485B (en) | 2019-07-05 |
Family
ID=59179043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710104995.XA Expired - Fee Related CN106885485B (en) | 2017-02-25 | 2017-02-25 | Hot end variable cross-section multi-pulsation cold end heat pipe radiator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106885485B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI811504B (en) * | 2019-12-16 | 2023-08-11 | 訊凱國際股份有限公司 | Heat dissipating device |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107809886B (en) * | 2017-10-19 | 2019-07-05 | 华南理工大学 | A kind of chilly plate of wedge shape microflute group |
| CN110793366B (en) * | 2018-04-14 | 2021-05-14 | 青岛科技大学 | Heat pipe |
| CN110740611A (en) * | 2018-07-20 | 2020-01-31 | 深圳富泰宏精密工业有限公司 | Radiator and electronic device with same |
| CN109373795A (en) * | 2018-11-14 | 2019-02-22 | 上海大学 | There is the method for the high heat transfer rate heat transfer pipe of porous structure liner using the preparation of high temperature elements vaporization technique |
| CN113916027A (en) * | 2020-07-10 | 2022-01-11 | 华为技术有限公司 | Radiator and communication equipment |
| CN114812234A (en) * | 2021-01-28 | 2022-07-29 | 华为技术有限公司 | Heat dissipation device, preparation method of heat dissipation device and wireless communication base station |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2098556U (en) * | 1991-06-01 | 1992-03-11 | 西安交通大学 | Cooling blades of turbine rotor |
| TW331586B (en) * | 1997-08-22 | 1998-05-11 | Biing-Jiun Hwang | Network-type heat pipe device |
| CN2874396Y (en) * | 2005-10-21 | 2007-02-28 | 中国科学院理化技术研究所 | Pulse heat pipe radiator using low-melting point metal and common fluid as flowing working medium |
| CN2882205Y (en) * | 2005-12-28 | 2007-03-21 | 徐福州 | Adhesive sheet contact thermal conduction type heat pipe radiator |
| CN200968795Y (en) * | 2006-10-31 | 2007-10-31 | 中南大学 | Heat pipe radiator |
| EP2483921A2 (en) * | 2009-09-28 | 2012-08-08 | ABB Research Ltd. | Cooling module for cooling electronic components |
| CN102128552B (en) * | 2011-03-25 | 2012-05-02 | 长沙理工大学 | Single-sided corrugated plate type pulsating heat pipe |
| CN102843897A (en) * | 2012-09-17 | 2012-12-26 | 夏侯南希 | Array cold-end plane heat pipe |
| CN203517983U (en) * | 2013-07-15 | 2014-04-02 | 同方安装工程科技（江苏）股份有限公司 | Wall-mounted heat pipe radiant panel |
| CN104567499B (en) * | 2015-01-20 | 2016-09-14 | 北京建筑大学 | A kind of pulsating heat pipe cooling device for electronic device and heat dissipating method thereof |
| CN105222628A (en) * | 2015-09-21 | 2016-01-06 | 上海卫星工程研究所 | Pulsating heat pipe |
-
2017
- 2017-02-25 CN CN201710104995.XA patent/CN106885485B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI811504B (en) * | 2019-12-16 | 2023-08-11 | 訊凱國際股份有限公司 | Heat dissipating device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106885485A (en) | 2017-06-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106885485B (en) | Hot end variable cross-section multi-pulsation cold end heat pipe radiator | |
| CN106033749B (en) | Parallel parallel microchannels multicore sheet heat radiator | |
| CN107166564A (en) | Heat pipe heat exchanger, air conditioner control radiating assembly, air conditioner outdoor unit and air conditioner | |
| CN106332529B (en) | A kind of corrugated tube type microcirculation radiator and microcirculation heat-exchange system | |
| CN206268818U (en) | A kind of heat abstractor and the high-power LED lamp with the heat abstractor | |
| CN101762196A (en) | Multi-channel wick-embedded flat plate heat pipe | |
| CN110634816B (en) | Liquid cooling phase transition vector heat transfer heat dissipation system | |
| CN106439756A (en) | S-shaped loop heat pipe radiator for LED | |
| CN102128552B (en) | Single-sided corrugated plate type pulsating heat pipe | |
| CN106304805A (en) | A kind of plate-fin microcirculation radiator and microcirculation heat-exchange system | |
| CN206389664U (en) | A kind of corrugated tube type microcirculation radiator and microcirculation heat-exchange system | |
| CN109945704A (en) | Multistage plate-type heat-pipe and radiator | |
| CN113959244B (en) | Double-evaporator condenser loop heat pipe | |
| CN107917554A (en) | Flat heat pipe expansion type condensing device | |
| CN111412776A (en) | Vapor-liquid flow-dividing capillary-core vapor chamber heat exchanger and preparation method thereof | |
| CN100426494C (en) | Heat radiator of heat pipe | |
| CN102349152B (en) | Ebullient cooling device | |
| CN202032930U (en) | Double-sided channel plate-type pulsating heat pipe | |
| CN106714509A (en) | Heat dissipation device | |
| CN205991730U (en) | A kind of flat-plate heat pipe array radiator | |
| CN207517665U (en) | Radiator based on microchannel module | |
| CN206177110U (en) | Vapor chamber | |
| CN202032931U (en) | Single-face corrugated plate type pulsating heat pipe | |
| CN202076256U (en) | Return circuit type heat pipe radiator | |
| CN212211747U (en) | Heat radiator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190705 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |