CN104215107A - Phase-change-type radiator - Google Patents

Phase-change-type radiator Download PDF

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Publication number
CN104215107A
CN104215107A CN201310218378.4A CN201310218378A CN104215107A CN 104215107 A CN104215107 A CN 104215107A CN 201310218378 A CN201310218378 A CN 201310218378A CN 104215107 A CN104215107 A CN 104215107A
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CN
China
Prior art keywords
fin
phase
cavity
guiding hot
central guiding
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.)
Pending
Application number
CN201310218378.4A
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Chinese (zh)
Inventor
刘晓东
支国鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Energy Research (beijing) Steady-State Heat And Mass Transfer Technology Research Institute Co Ltd
Original Assignee
State Energy Research (beijing) Steady-State Heat And Mass Transfer Technology Research Institute Co Ltd
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Application filed by State Energy Research (beijing) Steady-State Heat And Mass Transfer Technology Research Institute Co Ltd filed Critical State Energy Research (beijing) Steady-State Heat And Mass Transfer Technology Research Institute Co Ltd
Priority to CN201310218378.4A priority Critical patent/CN104215107A/en
Publication of CN104215107A publication Critical patent/CN104215107A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a phase-change-type radiator. The phase-change-type radiator comprises a center heat conduction body used for being connected with a heat source and a plurality of radiating pieces connected with the outer wall of the center heat conduction body, the inside of each radiating piece is provided with a plurality of mutually independent heat conduction cavities, and liquid work media are injected into each heat conduction cavity of each radiating piece. A cavity is arranged in the center heat conduction body, the liquid work media are injected into the cavity of the center heat conduction body, and the inner wall of the cavity is provided with a capillary structure. The radiating pieces are flat, and the mutually independent heat conduction cavities are distributed in the radiating pieces in parallel. According to the phase-change-type radiator, the mutually independent heat conduction cavities are arranged in the radiating pieces, the liquid work media are injected into the heat conduction cavities, and accordingly the radiating performance is good, the weight is low, the temperature difference of two ends of each radiating piece is small, and work reliability is high.

Description

A kind of phase-change radiator
Technical field
The present invention relates to heat sink technology field, particularly relate to a kind of phase-change radiator.
Background technology
At present, existing part heat sink make use of phase change technique and realizes heat radiation, but the fin of such radiator all adopts metal to make, the heat conduction of fin is only the conduction of heat relying on metal itself, and the thermal-conduction resistance of its heat radiation is mainly present in heat from fin root to the heat transfer process of fin ends.Because the capacity of heat transmission of metal is limited, therefore thick the and temperature difference of the fin of the radiator of prior art is large, because this reducing the radiating effect of radiator product, and adds the weight of radiator.
Utility model content
For overcoming above-mentioned the deficiencies in the prior art, the invention provides a kind of phase-change radiator, its fin is flat, therefore permeability is good, heat exchange is abundant, fin inside is provided with separate thermal conductive cavity, and be marked with liquid refrigerant in thermal conductive cavity, therefore thermal diffusivity is good, lightweight, and the having a narrow range of temperature of fin two ends, functional reliability is high.
For realizing above-mentioned purpose of the present invention, phase-change radiator of the present invention comprises: for connecting the central guiding hot body of thermal source; Connect multiple fin of described central guiding hot body outer wall respectively; Wherein, the inside of each fin is provided with multiple separate thermal conductive cavity; All liquid refrigerant is marked with in each thermal conductive cavity of each fin.
Wherein, be provided with cavity in described central guiding hot body, in it, be marked with liquid refrigerant, and the inwall of cavity is provided with capillary structure.
Wherein, described fin is flat pattern, and its multiple separate thermal conductive cavity parallel distributed is inner in fin.
Preferably, each described thermal conductive cavity comprises the first passage section be interconnected and the second channel section being connected central guiding hot body.Particularly, the one or both sides of each described fin are provided with outward extending blade.Wherein, each described second channel section is communicated with the cavity of central guiding hot body or is not communicated with.
Wherein, described central guiding hot body is column or plate body.
Preferably, described fin is arranged in the sun fancy of dispersing at described central guiding hot body outer wall.
Preferably, described first passage section is parallel with described central guiding hot body or tilt, and described second channel section is vertical with the central axis direction of described central guiding hot body or tilt.
Preferably, described fin inside is provided with capillary structure.
Preferably, the multiple fin forming described heronsbill shape are connected as one by outer protective cover.
Compared with prior art, the present invention has following outstanding advantage:
1) each fin inside of phase-change radiator of the present invention is provided with multiple separate thermal conductive cavity, and be all marked with liquid refrigerant in each thermal conductive cavity, when heat conduction is to fin, this liquid refrigerant absorbs heat and becomes gaseous working medium mutually and be diffused in the whole thermal conductive cavity of fin, after thermal conductive cavity inner surface release heat, change liquid refrigerant into, liquid refrigerant the flows by action of gravity or capillary structure return former evaporated start on once circulate.Therefore in heat transfer process, the temperature difference at fin two ends affects little by transmission range, and heat transfer efficiency is high, and the functional reliability of product is high;
2) fin inside of the present invention is provided with multiple separate thermal conductive cavity, and therefore fin reliability is high, lightweight, and production cost is low;
3) liquid refrigerant in thermal conductive cavity of the present invention can undergo phase transition when temperature change, by phase transformation, even heat is dispersed to the surface of fin, therefore heat exchange is more abundant, compared with the radiator of identical radiating efficiency, the physical dimension of phase-change radiator of the present invention can be less, therefore volume is little, saves space, thus improves the utilization rate in space;
4) fin of the present invention is flat pattern, and therefore permeability is good, more abundant with the heat exchange of air, and heat exchange fully can reduce the usage quantity of fin, and therefore make the weight of phase-change radiator of the present invention lighter, cost is lower;
5) fin of the present invention is arranged in the sun fancy of dispersing on central guiding hot body; and multiple fin is connected as one by protective cover; therefore the bonding strength of fin is high, facilitates the transport of phase-change radiator of the present invention, transfer, assembling and use.
Below in conjunction with accompanying drawing, the present invention is further detailed explanation.
Accompanying drawing explanation
The structural representation of Fig. 1 to be first passage section of the present invention be phase-change radiator of Vertical Channel;
The structural representation of Fig. 2 to be first passage section of the present invention be phase-change radiator of semi-hexagon shape passage;
Fig. 3 is the half sectional view of phase-change radiator of the present invention;
Fig. 4 is the part A enlarged drawing shown in Fig. 3;
Fig. 5 is the structural representation that second channel section of the present invention is communicated with central guiding hot body;
Fig. 6 is the structural representation that second channel section of the present invention is not communicated with central guiding hot body;
Fig. 7 is the structural representation of fin of the present invention;
Fig. 8 is the top view of fin shown in Fig. 6;
Fig. 9 is the sectional view in the cross section of fin shown in Fig. 6.
Description of reference numerals: 1-central guiding hot body; 2-fin; 3-thermal conductive cavity; 4,9-liquid refrigerant; 5-capillary structure; 6-first passage section; 7-second channel section; 8-blade; 10 protective covers.
Detailed description of the invention
As Figure 1-4, phase-change radiator of the present invention comprises: for connecting the central guiding hot body 1 of thermal source; Connect multiple fin 2 of central guiding hot body 1 outer wall respectively; Wherein, the inside of each fin 2 is provided with multiple separate thermal conductive cavity 3, liquid refrigerant 9 is all marked with in each thermal conductive cavity 3 of each fin 2, when heat conduction is to fin, this liquid refrigerant carburation by evaporation changes steam working medium into and flow back to former evaporated after the inner surface of thermal conductive cavity 3 is condensed into liquid; Wherein, cavity is provided with in central guiding hot body 1, liquid refrigerant 4 is marked with in cavity, equally, when central guiding hot body 1 absorbs heat, this liquid refrigerant becomes steam working medium to be disperseed even heat, in addition, is provided with made by porous metals and can receives the capillary structure 5 of liquid refrigerant at the inwall of cavity.Preferably, the capillary structure (not shown) made by porous metals can also be set in each thermal conductive cavity 3.
Employing is settled in multiple fin 2, each fin 2 at central guiding hot body 1 outer wall and is arranged multiple thermal conductive cavity 3 and the method injecting liquid refrigerant in each thermal conductive cavity 3, the heat being delivered to fin 2 by central guiding hot body 1 is made effectively to be diverted to each fin, and even heat can be distributed to whole thermal conductive cavity 3 after evaporating by the liquid refrigerant in each fin 2, thus make the temperature difference at fin 2 two ends very little.Preferably, the temperature difference at fin 2 two ends is less than 5 DEG C, and the length of temperature difference and fin 2 has nothing to do.Because the temperature difference at fin 2 two ends is even, thus make the heat exchange of phase-change radiator of the present invention and outside air more abundant.Therefore, under identical heat radiation power, the size of phase-change radiator of the present invention can be more much smaller than the size of the radiator of prior art, therefore volume little, take up room little.
Concrete, as shown in Figure 3, central guiding hot body 1 of the present invention can adopt column, multiple fin 2 is arranged in the sun fancy of dispersing at central guiding hot body 1 outer wall, thus make the permeability between adjacent fin 2 good, more abundant with the heat exchange of outside air, thus the usage quantity of fin 2 can be reduced, and then reduce the weight of phase-change radiator.Preferably, fin 2 is made up of lightweight hollow aluminium.
As Figure 7-9, fin 2 of the present invention adopts flat strip structure, its thickness is 1.0mm-3.0mm, multiple separate thermal conductive cavity 3 is set in it and multiple thermal conductive cavity 3 parallel distributed in the inside of fin 2, and the wall thickness between the outer wall of thermal conductive cavity 3 and fin 2 is about 0.3mm, therefore the weight of fin is lighter.Wherein, each thermal conductive cavity 3 comprises the first passage section 6 be interconnected and the second channel section 7 being connected central guiding hot body 1, as shown in Fig. 3,5,6, first passage section 6 is parallel with the axis of central guiding hot body 1, second channel section 7 is vertical with the central axis direction of central guiding hot body 1 or tilt, thus making in the process of heat trnasfer, the steam working medium in fin 2, when gravity auxiliary reflux, can have higher heat transfer efficiency.Certainly, first passage section 6 also can adopt the form with the axis of central guiding hot body 1 with certain angle of inclination.When designing, the Vertical Channel (as shown in Figure 1) that first passage section 6 can adopt the bearing of trend of its passage completely parallel with the direction of the central shaft of central guiding hot body 1; Also the bending channel (as shown in Figure 2) that the bearing of trend of its portion of channel is parallel with the direction of the central shaft of central guiding hot body 1, its another part passage forms semi-hexagon shape passage can be adopted, thus increase the intensity of the peripheral fin of phase-change radiator, facilitate simultaneously and capture phase-change radiator in use.
In the present invention, the second channel section 7 of each thermal conductive cavity 3 of fin 2 can adopt with the cavity of central guiding hot body 1 structure be not communicated with, as shown in Figure 6.Now, can by the two ends involution of each fin 2, thus form the thermal conductive cavity 3 of multiple separate and two ends sealing in the inside of each fin 2, and then each fin 2 is fixedly connected with the outer wall of central guiding hot body 1 in modes such as bonding, welding, riveted joint, crimping.Adopt the technique manufacturing phase-change radiator in this way simple, when any one or several fin 2 fracture failure, can not affect the radiating effect of whole phase-change radiator, therefore the functional reliability of product is high.Preferably, the cavity of fin 2 both sides all can be made the structure of entity, thus the bonding strength between fin 2 and central guiding hot body 1 can be increased.
Adopt above-mentioned structure, the present invention by being marked with liquid refrigerant in the cavity of central guiding hot body 1, the heat that thermal source can be made to produce conducts to the inwall of cavity by the outer wall of the cavity of central guiding hot body 1 be connected with thermal source, and the heat conducting to cavity inner wall passes to the liquid refrigerant in the capillary structure 5 of cavity inner wall, liquid refrigerant 4 becomes steam by thermal evaporation.Now, steam working medium spreads and is full of whole cavity in cavity, because cavity inner wall temperature is a little less than the temperature of steam working medium, when steam working medium is attached to cavity inner wall, steam working fluid condenses becomes liquid refrigerant, and the heat of release is passed to cavity inner wall, and the liquid refrigerant that condensation is formed is back to the contact position of central guiding hot body 1 and thermal source under the effect of the capillary force of capillary structure 5.
When because of the heat discharged when the steam working medium absorbing radiator center conductor becomes liquid, temperature raises chamber outer wall, the heat of chamber outer wall is delivered to the multiple fin 2 be connected with central guiding hot body 1 outer wall, liquid refrigerant in multiple thermal conductive cavities 3 of now each fin 2 absorbs heat, and become steam working medium, steam working medium spreads and is full of whole thermal conductive cavity 3 in thermal conductive cavity 3, when steam working medium is attached to the inwall of thermal conductive cavity 3, steam working medium release heat, be condensed into liquid refrigerant, liquid refrigerant at gravity or/and under the effect of the capillary force of capillary structure, be back to the contact position of central guiding hot body 1 and fin 2.And the heat of steam working medium release passes to the inner and outer wall of fin 2 successively, and be passed in outside air by fin 2, thus complete the whole diabatic process that the heat produced by thermal source is delivered to outside air.
Or in the present invention, second channel section 7 can also adopt with the cavity of central guiding hot body 1 mode be communicated with, as shown in Figure 5.Now, the outer wall of central guiding hot body 1 offers the opening corresponding with the position of second channel section 7, and second channel section adopts the mode of welding to be fixedly connected with the junction of central guiding hot body 1, thus the thermal conductive cavity of fin 2 is communicated with the cavity of central guiding hot body 1.Adopt in this way, in the process of heat trnasfer, be full of multiple thermal conductive cavity 3 completely in multiple thermal conductive cavities 3 that the steam working medium that liquid refrigerant in central guiding hot body 1 changes can enter each fin 2, the heat discharged during its condensation is delivered in outside air through fin 2, thus make central guiding hot body 1 can control within 7 DEG C with the temperature difference of each fin 2 far-end, preferably, temperature difference can be less than 5 DEG C.
Further, as shown in Figure 5, Figure 6, the blade 8 of outward extending one or more very thin thickness can also be set in the one or both sides of fin 2.When designing, the bearing of trend of blade 8 can be parallel with fin 2, also can be vertical with fin 2, thus the radiating effect of fin 2 can be increased, and then strengthen the radiating effect of phase-change radiator of the present invention, and the usage quantity of fin 2 can be reduced, alleviate the weight of phase-change radiator further.Preferably, the thickness of blade 8 is 0.2mm-1.0mm.
Preferably, at multiple fin 2, the other end be connected with central guiding hot body is connected as one by protective cover 10, thus makes the intensity of fin 2 higher, facilitates the transport of phase-change radiator of the present invention, transfer, assembling and use.
Preferably, the above-mentioned component being infused in the liquid refrigerant 9 in thermal conductive cavity 3 is identical with the component of the liquid refrigerant 4 in the cavity being infused in central guiding hot body 1, as all adopted liquid ammonia or other liquid working substance, certainly, two kinds of liquid refrigerants that component also can be adopted different.
Certainly, be marked with liquid refrigerant 4 in the cavity that central guiding hot body 1 of the present invention also can adopt inside to have this plate body of structure (not shown) of the plate body of cavity, and be provided with the multiple fin 2 in sun fancy of dispersion at the outer wall of plate body.Adopt the heat transfer process of the phase-change radiator of plate body identical with the heat transfer process of the phase-change radiator of above-mentioned employing column, no longer repeat at this.
And the use of conveniently phase-change radiator of the present invention, central guiding hot body 1 with fin 2 can also arrange the interface being connected other device or joint (not shown).
Although be explained in detail the present invention above, the present invention is not limited thereto.Those skilled in the art in can recording according to the present invention perhaps principle modify, therefore, all record according to the present invention in various amendments that perhaps principle is carried out all should be understood to fall into protection scope of the present invention.

Claims (10)

1. a phase-change radiator, comprising:
For connecting the central guiding hot body of thermal source;
Connect multiple fin of described central guiding hot body outer wall respectively, it is characterized in that:
The inside of each fin is provided with multiple separate thermal conductive cavity;
All liquid refrigerant is marked with in each thermal conductive cavity of each fin.
2. phase-change radiator according to claim 1, is characterized in that, be provided with cavity, be marked with liquid refrigerant in it, and the inwall of cavity is provided with capillary structure in described central guiding hot body.
3. phase-change radiator according to claim 1, is characterized in that, described fin is flat pattern, and its inside has multiple separate thermal conductive cavity parallel distributed inner in fin.
4. phase-change radiator according to claim 3, is characterized in that, each described thermal conductive cavity comprises the first passage section be interconnected and the second channel section being connected central guiding hot body.
5. phase-change radiator according to claim 4, is characterized in that, the one or both sides of each described fin are provided with outward extending blade.
6. the phase-change radiator according to claim 4 or 5, is characterized in that, each described second channel section is communicated with the cavity of central guiding hot body or is not communicated with.
7. phase-change radiator according to claim 6, is characterized in that, described central guiding hot body is column or plate body.
8. phase-change radiator according to claim 7, is characterized in that, described multiple fin is arranged in the sun fancy of dispersing at described central guiding hot body outer wall.
9. phase-change radiator according to claim 8, is characterized in that, described first passage section is parallel with described central guiding hot body or tilt, and described second channel section is vertical with the central axis direction of described central guiding hot body or tilt.
10. phase-change radiator according to claim 8, is characterized in that, the multiple fin forming described heronsbill shape are connected as one by protective cover.
CN201310218378.4A 2013-06-04 2013-06-04 Phase-change-type radiator Pending CN104215107A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310218378.4A CN104215107A (en) 2013-06-04 2013-06-04 Phase-change-type radiator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310218378.4A CN104215107A (en) 2013-06-04 2013-06-04 Phase-change-type radiator

Publications (1)

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CN104215107A true CN104215107A (en) 2014-12-17

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110012646A (en) * 2019-04-19 2019-07-12 湖北赛格瑞新能源科技有限公司 A kind of radiating module

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201476650U (en) * 2009-07-14 2010-05-19 史杰 Heat pipe radiating device for high thermal conductivity temperature equalizing tank
CN101893398A (en) * 2010-07-14 2010-11-24 上海嘉豪鹏耀新能源科技有限公司 Profile heat pipe integrated radiator
CN102506600A (en) * 2011-09-20 2012-06-20 华北电力大学 Extended integral flat heat pipe at condensation end
CN202749364U (en) * 2012-09-10 2013-02-20 鞍山欧博达热管设备制造有限公司 Annular heat pipe section material superconducting radiator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201476650U (en) * 2009-07-14 2010-05-19 史杰 Heat pipe radiating device for high thermal conductivity temperature equalizing tank
CN101893398A (en) * 2010-07-14 2010-11-24 上海嘉豪鹏耀新能源科技有限公司 Profile heat pipe integrated radiator
CN102506600A (en) * 2011-09-20 2012-06-20 华北电力大学 Extended integral flat heat pipe at condensation end
CN202749364U (en) * 2012-09-10 2013-02-20 鞍山欧博达热管设备制造有限公司 Annular heat pipe section material superconducting radiator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110012646A (en) * 2019-04-19 2019-07-12 湖北赛格瑞新能源科技有限公司 A kind of radiating module

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Application publication date: 20141217