CN1869574B - Radiator - Google Patents
Radiator Download PDFInfo
- Publication number
- CN1869574B CN1869574B CN2006100829674A CN200610082967A CN1869574B CN 1869574 B CN1869574 B CN 1869574B CN 2006100829674 A CN2006100829674 A CN 2006100829674A CN 200610082967 A CN200610082967 A CN 200610082967A CN 1869574 B CN1869574 B CN 1869574B
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- heat
- cavity
- radiator
- fin
- pedestal
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The invention relates to a radiation core that includes a base and plural fins, and one or more cavity is formed in the base and the fins. The cavity is channel shaped arranged along fins direction and has wick. It also relates to a radiator that includes the heat emission core used for conducting and exchange heat and a blockage to block the cavity to avoid the leakage of working substance. Each cavity of the heat emission core has a blockage or al the cavities of the heat emission core have a blockage. The blockage connects to liquid filling pipeline to adding working substance. The invention has cavity to decrease material consumption and lower cost. It has high heat conduction efficiency and heat exchange efficiency.
Description
Technical field
The present invention relates to a kind of radiator, especially a kind of liquid-gas phase transition that utilizes working medium conducts heat and the radiator of heat exchange.
Background technology
Along with development of times, no matter be at industry or sphere of life, need be more and more with the situation that radiator dispels the heat, and along with the maximization of parts or the development of microminiaturization, the power of parts is increasing, the following heat flow density that produces is increasing, therefore must use radiator to dispel the heat.
Existing radiator has two kinds, and a kind of is the aluminium section bar radiator that adopts expressing technique to make, and another kind is a heat-pipe radiator.
As shown in Figure 1, be the structural representation of existing aluminium section bar radiator, form by integrally formed aluminium base 80 and fin 81 (claiming fin again) two parts.
Thermal source contacts with the bottom of aluminium base when work, conducts heat to fin by aluminium base then and dispels the heat.Therefore, it is heat conduction function (participating in the heat exchange of part) that aluminium base is mainly born the heat transmission, be about to heat and pass to fin by aluminium base, and fin is mainly used in the heat exchange effect of finishing, and is about to heat and carries out heat exchange by fin and air.
In the middle of real work, the contact area of some parts is very little, but heat flow density is very high, and the area of aluminium base is bigger, when the relative aluminium base of thermal source 82 80 whole expansion planes with the contact area of aluminium base 80 less, and when heat vertically is the Y direction transmission along aluminium base, in order to increase the calorie value of transmission, reduce to transmit thermal resistance, can only increase the cross-sectional area of aluminium base in heat direction of transfer (Y direction), be a timing because work as the material of radiator, and thermal conductivity factor is certain, therefore for heat efficiently conducts, radiator generally uses aluminium, copper or other good heat-conducting metal or alloy.
And the increase of cross-sectional area certainly will cause the pedestal thickening, material consumption strengthens, cost increases, and because the entity aluminium base capacity of heat transmission is limited, and fin all is to use the section bar of aluminium or copper, their exchange capability of heat also is limited, even increase area or volume, also the problem same with pedestal can appear, 2 points thus, the limited exchange capability of heat of heat-transfer capability that pedestal is limited and fin has limited the heat-sinking capability of aluminium section bar radiator, when power of heat source is heat flow density when big, can't reach better heat radiating effect.
As shown in Figure 2, be the structural representation of existing heat-pipe radiator, comprise heat-transfer pipe 90, rising is connected on heat-transfer pipe 90 several pieces fins 91 outward, and heat-transfer pipe 90 bottoms are connected to evaporation box 92, and evaporation box is filled with working medium for 92 li, and evaporation box 92 has connected topping up pipe 93.
In work, evaporation box 92 contacts with thermal source, when the heat of thermal source is delivered to evaporation box 92, working medium in the evaporation box 92 undergoes phase transition or flows through heat-transfer pipe 90 and carries out the transmission of heat, and heat is delivered to fin 91 by heat-transfer pipe 90, carry out the heat exchange heat radiation by fin 91 and air, when the temperature reduction, the working medium in the heat-transfer pipe 90 are back to the evaporation box 92 from the gaseous state liquefy.
Therefore, the heat transferred fin 91 that the effect of heat-transfer pipe 91 will be transmitted from evaporation box 92 exactly mainly plays heat transfer effect, and fin 92 be with exchange heat in air, mainly play the heat exchange effect.
Though this radiator can well utilize the liquid-gas phase transition of working medium, heat is passed to fin 91 by heat-transfer pipe, but as shown in Figure 3, existing fin 91 all rises and connects or soldering is welded on heat-transfer pipe 90 outsides, cause the thermal contact resistance between heat-transfer pipe 90 and the fin 91 very big thus, 91 conduction efficiencies reduce heat from heat-transfer pipe 90 to fin, and bottleneck effect clearly.And the exchange capability of heat of fin 91 also is very limited, so the existence of thermal contact resistance, and the limited exchange capability of heat of fin, makes that the radiating effect of this radiator neither be fine.
Summary of the invention
The objective of the invention is defective, a kind of radiating core and radiator are provided at prior art, the low cost of manufacture of radiating core, the heat transfer efficiency of radiator and heat exchange efficiency are all very high, good heat dissipation effect.
For achieving the above object, the invention provides a kind of radiating core, comprise integrated pedestal and several pieces fins, have one or more cavity in described pedestal and the fin, described more than one cavity is conducted.
Described cavity is arranged along the fin direction.Described cavity is a channel shaped.Has the imbibition core in the described cavity.
The present invention also provides a kind of radiator, comprising:
Radiating core is used for conduction and heat-shift, comprises integrated pedestal and several pieces fins, has the cavity greater than in described pedestal and the fin;
Plugging device, the cavity mouth of the described pedestal cavity of sealing-in is used for cavity airtightly, and prevents refrigerant leakage in the cavity.
Be sealed with a plugging device on the cavity mouth of all cavitys of described radiating core, make all cavitys be connected; Perhaps be sealed with a plugging device on the cavity mouth of several cavitys, make described several cavitys be connected.The material of described radiating core is metal or metal alloy, and described metal is aluminium or copper or iron.Be connected with the topping up pipe on the described plugging device, be used to dose working medium.
Therefore, has cavity in the radiating core of the present invention, so material consumption is few, low cost of manufacture, and radiator of the present invention utilize the Working fluid phase changing in the cavity to carry out heat conduction and heat exchange, thereby heat transfer efficiency and heat exchange efficiency are all very high, cause the radiating effect of radiator very good.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is the structural representation of existing Section Bar Heat Sinks.
Fig. 2 is the structural representation of existing heat-pipe radiator.
Fig. 3 is the fin of existing heat-pipe radiator and the structural representation that heat-transfer pipe rises and connects.
Fig. 4 is the structural representation of radiating core of the present invention.
Fig. 5 is the structural representation of radiator of the present invention.
Fig. 6 is the cutaway view of the B-B line among radiator Fig. 5 of the present invention.
The structural representation of Fig. 7 during for radiator heat-dissipation of the present invention.
Fig. 8 is the cutaway view of C-C line among radiator Fig. 7 of the present invention.
Fig. 9 another structural representation during for radiator heat-dissipation of the present invention.
Figure 10 is the cutaway view of D-D line among radiator Fig. 9 of the present invention.
The specific embodiment
The present invention has cavity in pedestal and fin, can fill working medium, utilizes Working fluid phase changing to conduct heat and heat exchange.
As shown in Figure 4, be the structural representation of radiating core of the present invention, this radiating core 1 comprises integrated pedestal 10 and several pieces fins 11 (being also referred to as fin), and has one or more cavity 12 in integrated pedestal 10 and the fin 11.Several pieces fins 11 vertically are that Y direction is extended along pedestal 10, along pedestal 10 laterally is that X-direction is arranged, these cavitys 12 can conducting or not conducting in inside, and the shape of cavity 12 can have a lot, can be channel shape etc., and the material of integrated pedestal 10 and several pieces fins 11 can be metal or metal alloy, for example other good heat-conducting metals or alloy other good heat-conducting metal or alloys such as aluminium or copper or iron.And can be added with the imbibition core at cavity inside.
Because have cavity 12 in integrated pedestal 10 and the fin 11,, reduced manufacturing cost thus so radiating core 1 can reduce the consumption of a lot of materials during fabrication.
During fabrication, in original Section Bar Heat Sinks pedestal and fin, produce manyly be parallel to fin, along extruding the cavity of expansion direction and one-shot forming during at extrusion profile, the size of cavity and shape be according to the heat transfer power of thermal source heat flow density, radiator, radiator appearance and size and multifactorly determine with thermal source syndeton etc. is all.
As shown in Figure 5, be the structural representation of radiator of the present invention, this radiator comprises the radiating core 1 that is used to conduct with heat-shift, on the cavity mouth 120 of radiating core cavity 12 sealing-in plugging device 2, be used for airtight with cavity, the working medium of filling in cavity 12 just can not leaked like this.And can be connected with topping up pipe 3 on the plugging device,, can be used for adding working medium if any refrigerant leakage.
As shown in Figure 6, be the cutaway view of the B-B line among radiator Fig. 5 of the present invention, the shape of plugging device 2 can be an evagination.
If cavity 12 inside are not conductings, cavity mouth 120 at each cavity 12 all utilizes a plugging device 2 to carry out shutoff like this, then each cavity 12 just can conducting, working medium in the cavity 12 12 is carried out phase-change heat transfer respectively in each cavity separately, and each cavity 12 utilizes topping up pipe 3 separately to fill working medium thus.If the common plugging device 2 of cavity mouth 120 usefulness of several cavitys 12 carries out shutoff, like this, these several cavitys 12 are exactly conducting, and the working medium in these cavitys 12 can heat conduction the cavity 12 of these conductings in, and each cavity 12 of conducting utilizes a topping up pipe 3 filling working medium.If the cavity mouth 120 of each cavity 12 all utilizes common plugging device 2 to carry out shutoff certainly, like this, all cavitys 12 just become conducting, and the working medium in all cavitys 12 can flow in all cavitys 12, carry out heat conduction, and can fill working medium by a shared topping up pipe 3.
By sealing-in separate formation one closed cavity between the block head 2 at radiating core 1 two ends is with cavity 12 two ends internal communication or cavity 12, in cavity 12, charge into a certain amount of working medium, be about to radiating core and made a heat pipe.And the working medium in the cavity 12 promptly can realize the effect of heat conduction, also can make the effect that realizes heat exchange, and the heat transfer efficiency that had so both strengthened radiator has also increased the heat exchange efficiency of radiator.
Again as shown in Figure 7, structural representation during for radiator heat-dissipation of the present invention, thermal source 4 contacts with the bottom of radiator base 10, when thermal source 4 during (thermal source 4 with the contact area of pedestal 10 much smaller than the area of pedestal own) generally speaking with the contact portion of the hot device pedestal 10 of heat transferred, referring to shown in Figure 8, cutaway view for C-C line among Fig. 7, the working medium that contacts with this part in the cavity 12 is subjected to thermal evaporation, the working medium heat absorption becomes gaseous state by liquid state, be diffused into whole cavity 12 in the pedestal 10 rapidly with certain pressure, promptly the heat of thermal source 4 is transmitted to rapidly on whole pedestal 10 and the fin 11, carry out in the heat transfer process at fin 11, working medium heat release condensation in the cavity 12 relies on gravity to come back to initial evaporated, moves in circles.
As shown in Figure 9, another structural representation during for radiator heat-dissipation of the present invention, thermal source 4 contacts with the middle part (can certainly be top) of radiator base 10, when thermal source 4 during with the contact portion of the hot device pedestal 10 of heat transferred, the working medium that contacts with this part in the cavity 12 is subjected to thermal evaporation, the working medium heat absorption becomes gaseous state by liquid state, be diffused into whole cavity 12 in pedestal 10 and the fin 11 rapidly with certain pressure, promptly the heat of thermal source 4 is transmitted to rapidly on whole pedestal 10 and the fin 11, carry out in the heat transfer process at fin 11, working medium heat release condensation in the cavity 12, referring to shown in Figure 10, be the cutaway view of D-D line among Fig. 9, rely on the capillary force of imbibition core 13 to come back to initial evaporated, move in circles.Therefore can be so that the position of thermal source be provided with more flexible.
Because what heat conducted employing in pedestal 10 and fin 11 is the adopting heat pipes for heat transfer principle of Working fluid phase changing, its capacity of heat transmission can reach thousands of times of entity aluminium.And, has isothermal during adopting heat pipes for heat transfer, the heat that receives thermal source 4 can be expanded to whole heat pipe section by the part by the Working fluid phase changing heat transfer is that pedestal 10 and fin 11 have isothermal, thoroughly having overcome the Section Bar Heat Sinks heat is conducted in the whole pedestal process because entity aluminium thermal-conduction resistance causes the heat conduction to block by the thermal source place, the shortcoming that the base-plates surface temperature is irregular, during fin heat exchange by combining as a whole, fin is with heat exchange efficiency difference under the homalographic, and the heat exchange amount does not wait.Main wherein A equals heat exchange area because of heat exchange amount Φ=A*h* Δ t, and h is an aluminium fin surface coefficient of heat transfer, and Δ t is aluminium fin surface temperature t
wWith aluminium fin ambient air temperature t
fPoor.Same radiator then A is equal with h, because heat is in the pedestal conductive process, existing Section Bar Heat Sinks utilization be entity aluminium conduction, thermal conductivity factor λ aluminium is about 200w/mk, when existing radiator is big along Y direction extension area, whole aluminium base is very big along the fluctuation of Y direction surface temperature, causes t
wForm very big gradient difference; And its thermal conductivity factor of radiator of the present invention is thousands of times of aluminium, and therefore, radiator base temperature of the present invention is even, and gradient difference is little, its t
wMean temperature is far above the t of Section Bar Heat Sinks
wMean value; So Δ t value of the present invention is higher than existing Section Bar Heat Sinks, heat exchange amount promptly of the present invention and heat exchange effect are far above existing Section Bar Heat Sinks.
And the present invention is because the cavity of radiator of the present invention not only in pedestal, and in fin, promptly can utilize the high heat pipe principle of conduction efficiency, and forming along the also cavity in pedestal of fin extension direction in fin is complete heat pipe inner chamber.When thermal source during with the heat transferred pedestal, the working medium heat absorption evaporation in the aluminium base becomes gaseous state by liquid state, carries the gas that heat has a certain pressure and is diffused into whole inner chamber rapidly, and heat is directly passed to the aluminium fin, finishes heat exchange by the aluminium fin again.Because the heat transmission from thermal source to the aluminium fin has utilized the Working fluid phase changing heat transfer, heat transfer process of the present invention is that 1. the entity of thermal source conducts the 2. 3. heat exchange of aluminium fin of Working fluid phase changing of aluminium base part (with the thermal source contact portion), reduced heat conduction link, make heat transfer efficiency and and heat exchange efficiency all improve greatly.
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not break away from the spirit and scope of technical solution of the present invention.
Claims (4)
1. radiator, comprising:
Radiating core is used for conduction and heat-shift, comprises integrated pedestal and several pieces fins, has the cavity greater than in described pedestal and the fin;
Plugging device, the cavity mouth of the described pedestal cavity of sealing-in is used for cavity airtightly, and prevents refrigerant leakage in the cavity;
Be sealed with a plugging device on the cavity mouth of all cavitys of wherein said radiating core, make all cavitys be connected; Perhaps be sealed with a plugging device on the cavity mouth of several cavitys, make described several cavitys be connected.
2. radiator according to claim 1, the material of wherein said radiating core are metal or metal alloy.
3. radiator according to claim 2, wherein metal is aluminium or copper or iron.
4. according to claim 1 or 3 described radiators, be connected with the topping up pipe on the wherein said plugging device, be used to dose working medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100829674A CN1869574B (en) | 2006-06-23 | 2006-06-23 | Radiator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100829674A CN1869574B (en) | 2006-06-23 | 2006-06-23 | Radiator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1869574A CN1869574A (en) | 2006-11-29 |
| CN1869574B true CN1869574B (en) | 2010-04-21 |
Family
ID=37443303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100829674A Expired - Fee Related CN1869574B (en) | 2006-06-23 | 2006-06-23 | Radiator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1869574B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102012175B (en) * | 2010-12-02 | 2012-01-25 | 苏州昆拓热控系统股份有限公司 | Novel gas-liquid heat-exchange device |
| CN109612315A (en) * | 2019-01-29 | 2019-04-12 | 株洲智热技术有限公司 | Phase-change heat radiating device |
| TWI703302B (en) * | 2019-07-19 | 2020-09-01 | 大陸商深圳興奇宏科技有限公司 | Heat sink |
| US11435144B2 (en) | 2019-08-05 | 2022-09-06 | Asia Vital Components (China) Co., Ltd. | Heat dissipation device |
| CN114199062A (en) * | 2020-09-02 | 2022-03-18 | 西门子(深圳)磁共振有限公司 | Heat exchange piece and heat exchange assembly |
-
2006
- 2006-06-23 CN CN2006100829674A patent/CN1869574B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1869574A (en) | 2006-11-29 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: GUANGDONG FUXIN ELECTRONIC SCIENCE & TECHNOLOGY C Free format text: FORMER OWNER: SHI GUIJU Effective date: 20080905 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20080905 Address after: Guangdong Province, Foshan City, Shunde hi tech Zone (Ronggui) No. three Keyuan No. 20 post encoding: 528306 Applicant after: Guangdong Fuxin Electronic Technology Co., Ltd. Address before: Postal code No. 65, Jianshe North Street, Shijiazhuang, Hebei, 050041, China: Xinhua Road Applicant before: Shi Guiju |
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| C14 | Grant of patent or utility model | ||
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Owner name: GUANGDONG FUXIN TECHNOLOGY CO., LTD. Free format text: FORMER NAME: GUANGDONG FUXIN ELECTRONIC TECHNOLOGY CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 528306 Guangdong province Foshan city Shunde high tech Zone (Ronggui) No. 20 Keyuan Road three Patentee after: Guangdong Fuxin Electronic Technology Co., Ltd. Address before: 528306 Guangdong province Foshan city Shunde high tech Zone (Ronggui) No. 20 Keyuan Road three Patentee before: Guangdong Fuxin Electronic Technology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100421 Termination date: 20150623 |
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| EXPY | Termination of patent right or utility model |