CN205119903U - Heat pipe - Google Patents
Heat pipe Download PDFInfo
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- CN205119903U CN205119903U CN201520777073.1U CN201520777073U CN205119903U CN 205119903 U CN205119903 U CN 205119903U CN 201520777073 U CN201520777073 U CN 201520777073U CN 205119903 U CN205119903 U CN 205119903U
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- capillary structure
- heat pipe
- sandwich construction
- porosity
- pipe according
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Abstract
The utility model discloses a heat pipe. The utility model discloses a heat pipe includes the tube, be equipped with the capillary structure of cross -section for the U type along the the central axis direction in the tube, capillary structure's open end with the interior wall connection of tube, just capillary structure's the outside with form the lumen between the inner wall of tube, correspond on the surface of tube the position of capillary structure's open end is provided with the heat source, the multilayer structure of capillary structure for forming by the powder sintering, multilayer structure's adjacent two -layer porosity is different. The capillary structure's of different porositys evaporation effect is different, and the capillary structure's of U type adjacent two -layer capillary structure's porosity is different, can make heat transfer efficiency higher, consequently, the utility model discloses a heat pipe's heat transfer efficiency is high.
Description
Technical field
The utility model belongs to heat pipe field, is specifically related to a kind of heat pipe.
Background technology
Due to heat pipe have high capacity of heat transmission, heat transfer fast, the characteristic such as pyroconductivity is high, structure is simple and purposes is many, the demand in the market that is thus extensively subject to dispelling the heat.In addition, be mostly provided with capillary structure in the tube body of heat pipe on market, capillary structure is convenient to the transmission of working fluid in heat pipe, and this capillary structure realizes by the mode of sintered powder.
Heat pipe utilizes medium phase transition process (namely utilizing evaporation latent heat and the latent heat of condensation of liquid) in cold junction condensation after the evaporation of hot junction, and heat is conducted fast.General heat pipe is made up of shell, liquid-sucking core and end cap.Inside heat pipe is pumped into negative pressure state, is filled with suitable liquid, and this boiling point of liquid is low, easily volatilizees.Tube wall has liquid-sucking core, and it is made up of capillary-porous material.Heat pipe one end is evaporation ends, one end is condensation end in addition, when heat pipe one end is heated, liquid rapid vaporization in capillary, steam flows to other one end under the power of thermal diffusion, and at cold junction condensation releases heat, liquid flows back to evaporation ends along porous material by capillarity again, circulation like this is more than, until heat pipe two ends temperature equal (now steam heat diffusion stops).This circulation is carried out fast, and heat can be come by conduction continuously.But the heat transfer efficiency of the capillary structure of heat pipe is poor in prior art.
Utility model content
For the deficiencies in the prior art, the purpose of this utility model is to provide a kind of heat pipe, and the heat transfer efficiency of this heat pipe is high.
For reaching this object, the utility model by the following technical solutions:
A kind of heat pipe, comprise shell, in described shell, centrally axis direction is provided with cross section is U-shaped capillary structure, the openend of described capillary structure is connected with the inwall of described shell, and form tube chamber between the inwall of the outside of described capillary structure and described shell, on the outer surface of described shell, the position of the openend of corresponding described capillary structure is provided with thermal source, and described capillary structure is by powder sintered sandwich construction, and the porosity of the adjacent two layers of described sandwich construction is different.
Wherein, the porosity of every one deck of described sandwich construction increases progressively from inside to outside, successively decreases or is arranged alternately.
Wherein, described sandwich construction is at least two-layer.
Wherein, described sandwich construction is two-layer, and the porosity being positioned at one deck of inner side is 45 ~ 65%, and the porosity being positioned at another layer in outside is 25 ~ 45%.
Wherein, the volume of described capillary structure accounts for 25 ~ 50% of the total measurement (volume) of described tube chamber.
Wherein, the thickness of every one deck of described sandwich construction is 0.1 ~ 0.2mm.
Wherein, described powder is metal dust.
Wherein, described metal dust is copper powder.
Wherein, the cross section of described shell is circle, flat or polygon.
Compared with prior art, the beneficial effects of the utility model are: heat pipe of the present utility model comprises shell, in described shell, centrally axis direction is provided with cross section is U-shaped capillary structure, the openend of described capillary structure is connected with the inwall of described shell, and form tube chamber between the inwall of the outside of described capillary structure and described shell, on the outer surface of described shell, the position of the openend of corresponding described capillary structure is provided with thermal source, described capillary structure is by powder sintered sandwich construction, and the porosity of the adjacent two layers of described sandwich construction is different; During work, heat pipe is after thermal source place is heated, and hydraulic fluid evaporation becomes steam, steam moves to cold one end in the U-shaped capillary structure of sandwich construction, and in cold one end condensation, in the backflow of the center of U-shaped capillary structure, complete the transmission of heat from heating end to cold junction; Sandwich construction can make capillary structure increase under making identical table area situation, and U-shaped sandwich construction makes contact area between layers larger compared to common sandwich construction, increases capillary structure further; The evaporation effect of the capillary structure of different porosities is different, the porosity of the capillary structure of the adjacent two layers of U-shaped capillary structure is different, the good capillary force of macroporosity can be obtained, also can obtain the conductibility of small porosity simultaneously, thus make heat transfer efficiency higher, therefore, the heat transfer efficiency of heat pipe of the present utility model is high.
Accompanying drawing explanation
Fig. 1 is the cross-sectional structure schematic diagram of a kind of heat pipe of the present utility model.
Reference numeral is as follows:
1-shell; 2-capillary structure; 3-tube chamber; 4-thermal source.
Detailed description of the invention
The technical solution of the utility model is further illustrated below by accompanying drawing 1 and detailed description of the invention.
As shown in Figure 1, a kind of heat pipe of the present utility model, comprise shell 1, in described shell 1, centrally axis direction is provided with cross section is U-shaped capillary structure 2, the openend of described capillary structure 2 is connected with the inwall of described shell 1, and form tube chamber 3 between the outside of described capillary structure 2 and the inwall of described shell 1, on the outer surface of described shell 1, the position of the openend of corresponding described capillary structure 2 is provided with thermal source 4, described capillary structure 2 is by powder sintered sandwich construction, and the porosity of the adjacent two layers of described sandwich construction is different.The hollow position at the center of U-shaped capillary structure 2 provides the hydraulic fluid return flow line or steam channel that are filled with in heat pipe.Sandwich construction can make capillary structure increase under making identical table area situation, and U-shaped sandwich construction makes contact area between layers larger compared to common sandwich construction, increases capillary structure further.The said thermal source 4 of the utility model can for producing the parts of heat or heating in electronic component, also can be the miscellaneous part that electronic component is generated heat, capillary structure 2 is by powder sintered sandwich construction, wherein, described powder can be metal dust, such as copper powder, also can conventional other powder in this area.It is pointed out that the cross section of shell 1 can for different shapes, such as circle, flat, square, polygon, or other shapes.The porosity of the capillary structure of the adjacent two layers of sandwich construction is different, during work, hydraulic fluid is marked with in the tube chamber 3 of heat pipe, heat pipe is after thermal source place is heated, hydraulic fluid evaporation becomes steam, steam moves to cold one end in the U-shaped capillary structure of sandwich construction, and in cold one end condensation, reflux in the center of U-shaped capillary structure, complete the transmission of heat from heating end to cold junction, the evaporation effect of the capillary structure of different porosities is different, the porosity of the capillary structure of the adjacent two layers of U-shaped capillary structure is different, the good capillary force of macroporosity can be obtained, also can obtain the conductibility of small porosity simultaneously, thus heat transfer efficiency can be made higher.Preferably, the thickness of every one deck of sandwich construction is 0.1 ~ 0.2mm, such as 0.1mm, 0.12mm, 0.14mm, 0.15mm, 0.16mm, 0.18mm, 0.2mm.The porosity of every one deck of sandwich construction increases progressively from inside to outside, successively decreases or is arranged alternately.Sandwich construction is at least two-layer, can be 2 layers, 3 layers, 4 layers, or more multi-layered as required, does not repeat them here.As preferred version of the present utility model, sandwich construction is two-layer, and the porosity being positioned at the capillary structure of inner side is 45 ~ 65%, and the porosity being positioned at the capillary structure in outside is 25 ~ 45%.
As preferred version of the present utility model, the volume of capillary structure 2 accounts for 25 ~ 50% of the total measurement (volume) of tube chamber 3, can be cost-saving while guarantee heat-transfer effect.
Applicant states, above content is only preferred embodiment of the present utility model, for those of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, this description should not be construed as restriction of the present utility model.
Claims (9)
1. a heat pipe, comprise shell (1), it is characterized in that, in described shell (1), centrally axis direction is provided with cross section is U-shaped capillary structure (2), the openend of described capillary structure (2) is connected with the inwall of described shell (1), and form tube chamber (3) between the inwall of the outside of described capillary structure (2) and described shell (1), on the outer surface of described shell (1), the position of the openend of corresponding described capillary structure (2) is provided with thermal source (4), described capillary structure (2) is by powder sintered sandwich construction, the porosity of the adjacent two layers of described sandwich construction is different.
2. a kind of heat pipe according to claim 1, is characterized in that, the porosity of every one deck of described sandwich construction increases progressively from inside to outside, successively decreases or is arranged alternately.
3. a kind of heat pipe according to claim 1, is characterized in that, described sandwich construction is at least two-layer.
4. a kind of heat pipe according to claim 3, is characterized in that, described sandwich construction is two-layer, and the porosity being positioned at one deck of inner side is 45 ~ 65%, and the porosity being positioned at another layer in outside is 25 ~ 45%.
5. a kind of heat pipe according to claim 1, is characterized in that, the volume of described capillary structure (2) accounts for 25 ~ 50% of the total measurement (volume) of described tube chamber (3).
6. a kind of heat pipe according to claim 1, is characterized in that, the thickness of every one deck of described sandwich construction is 0.1 ~ 0.2mm.
7. a kind of heat pipe according to claim 1, is characterized in that, described powder is metal dust.
8. a kind of heat pipe according to claim 7, is characterized in that, described metal dust is copper powder.
9. a kind of heat pipe according to claim 1, is characterized in that, the cross section of described shell (1) is circle, flat or polygon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520777073.1U CN205119903U (en) | 2015-10-09 | 2015-10-09 | Heat pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520777073.1U CN205119903U (en) | 2015-10-09 | 2015-10-09 | Heat pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205119903U true CN205119903U (en) | 2016-03-30 |
Family
ID=55575503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520777073.1U Active CN205119903U (en) | 2015-10-09 | 2015-10-09 | Heat pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205119903U (en) |
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2015
- 2015-10-09 CN CN201520777073.1U patent/CN205119903U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |