CN103225976A - Method for increasing suction force of capillary core in groove heat pipe - Google Patents
Method for increasing suction force of capillary core in groove heat pipe Download PDFInfo
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- CN103225976A CN103225976A CN2013101432582A CN201310143258A CN103225976A CN 103225976 A CN103225976 A CN 103225976A CN 2013101432582 A CN2013101432582 A CN 2013101432582A CN 201310143258 A CN201310143258 A CN 201310143258A CN 103225976 A CN103225976 A CN 103225976A
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- heat pipe
- groove
- groove heat
- suction force
- capillary core
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Abstract
The invention discloses a method for increasing a suction force of a capillary core in a groove heat pipe. The method comprises the following steps: S1, cleaning and drying the groove heat pipe; S2, chemically corroding the capillary core in the dried groove heat pipe; and S3, cleaning and drying the corroded groove heat pipe. According to the method, the suction force of the capillary core in the groove heat pipe is effectively increased under the circumstance that the macrostructure of the capillary core is not destroyed, the capillary rise height can reach 3-4 times of that before the capillary core is not treated with the method, and the method has the remarkable effect for improving the working performance of the heat pipe.
Description
Technical field
The present invention relates to groove heat pipe field, particularly a kind of method that improves groove heat pipe capillary core suction force.
Background technology
Heat pipe is a kind of heat conductivility good heat transfer element, its operation principle is a phase-change heat transfer, basic process is: worker quality liquid is heated at heat pipe evaporator section and is evaporated to steam, steam flows to condensation segment by vacuum passage, at condensation segment, steam discharges latent heat and condenses into liquid, and condensed fluid is back to evaporator section by capillary wick, so circulation.
Normal conditions, the working cycles driving force of heat pipe is provided by capillary wick, therefore will improve the service behaviour of heat pipe, and capillary wick must can provide enough capillary suction forces.The capillary suction force of capillary wick depends on effective pore radius, working medium surface tension, factors such as contact angle.
Wick structure commonly used generally can be divided into single structure and composite construction, wherein single structure imbibition core comprises undrawn yarn web-roll core, metal sintering core, axial groove core, toroidal cores etc., and composite construction imbibition core comprises silk screen composite core, silk screen covering groove core, plate core arterial highway core etc.For the groove capillary wick, the size of groove itself greatly influences capillary suction force, generally speaking, list can not produce very big capillary pressure reduction with the groove capillary wick, in order to overcome this problem, there is the scholar to invent composite construction capillary wick such as compound capillary wick of groove silk screen and the sintered combined capillary wick of groove.Though the composite construction capillary wick has lot of advantages, its manufacture process requirement height, cost is bigger.Therefore, be necessary to seek a kind of under the prerequisite that does not improve the processing technology difficulty, increase the method for capillary wick capillary suction force.
Summary of the invention
In order to overcome the shortcoming and deficiency that prior art exists, the invention provides a kind of method that improves groove heat pipe capillary core suction force.
The technical solution used in the present invention:
A kind of method that improves groove heat pipe capillary core suction force comprises the steps:
S1 cleans the groove heat pipe, drying;
S2 carries out chemical attack to dried groove inside heat pipe capillary wick to be handled;
The groove heat pipe of S3 after to corrosion treatment cleans drying.
Chemical attack among the described S2 is handled and is specially, and the groove heat pipe is immersed corrosive agent fully or corrosive agent is instilled in the groove heat pipe capillary core.
Described corrosive agent is acid or the base reagent with groove inside heat pipe capillary wick material generation chemical reaction.
Described cleaning is specially, and adopts cleaning agent directly to clean or adopt supersonic wave cleaning machine.
Described cleaning agent is absolute ethyl alcohol or deionized water.
Also comprise among the described S2 groove heat pipe outer wall is carried out anti-corrosion protection, described anti-corrosion protection is specially, and glues obedient protection film or is coated with protective paint at the groove heat pipe outer wall.
The beneficial effect that the present invention has:
1, the present invention effectively improves the capillary wick suction force under the situation of not destroying capillary wick self macrostructure, and capillary rise height can reach 3-4 times before not handling by the present invention, for the service behaviour of improving heat pipe, has significant effect;
2, the present invention is used to improve the driving force of inside heat pipe working medium circulation, increases the capillary limit of heat pipe, is applicable to the groove heat pipe of various materials;
3, the present invention is applicable to the groove heat pipe of unlike material, different cross section shape.
Description of drawings
Fig. 1 is the groove microscopic appearance figure of the aluminum groove flat plate heat tube in the specific embodiment of the invention;
Fig. 2 is through the groove microscopic appearance figure after the chemical attack processing in the specific embodiment of the invention;
Fig. 3 handles forward and backward groove capillary rise height comparison diagram for adopting the present invention.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
Present embodiment is an example with a kind of aluminum groove flat plate heat tube, adopts the aluminum groove, and the corrosive agent that embodiment adopts NaOH solution to handle as chemical attack adopts supersonic wave cleaning machine, and absolute ethyl alcohol is that cleaning agent carries out cleaning treatment to the groove heat pipe.
A kind of method that improves groove heat pipe capillary core suction force comprises the steps:
S1 cleans the groove flat-plate heat pipe with supersonic wave cleaning machine, scavenging period is 20-30 minute, cleaning agent adopts absolute ethyl alcohol, the dry oven dry of groove flat-plate heat pipe after will cleaning then, cleaning is oil stain and the impurity that is used to remove wick structure, the not clear material of avoiding oil stain or generating when chemical attack influences corrosive effect, and the groove flat-plate heat pipe after cleaning is dried as shown in Figure 1.
S2 carries out chemical attack to the inner capillary wick of groove flat-plate heat pipe to be handled, and changes its surface microscopic topographic, and the opposite heat tube outer wall carries out corrosion protection simultaneously;
Be specially: the groove flat-plate heat pipe behind cleaning, drying immerses in the NaOH solution and corrodes; etching time is determined according to the concentration of corrosive agent; it is 0.1～0.3g/ml that present embodiment adopts the concentration of corrosive agent; etching time is 10～30 minutes; for preventing that groove flat-plate heat pipe outside wall surface from being corroded; can protect processing to it; be specially modes such as being coated with one deck protective paint or subsides one deck protection paster; as shown in Figure 2; groove flat-plate heat pipe after the corrosion; generate a kind of trickle surface texture, improve the surface roughness of capillary wick.
S3 carries out cleaning treatment, drying to the groove flat-plate heat pipe after corroding; Be specially: the groove flat-plate heat pipe is inserted in the supersonic wave cleaning machine that fills the absolute ethyl alcohol cleaning agent and cleaned 20-30 minute, be used to remove the impurity of capillary wick surface attachment, then the groove heat pipe is carried out drying.
Described corrosive agent be can with reagent such as the acid of groove heat pipe capillary core material generation chemical reaction or alkali.
Described cleaning agent be can not with the cleaning agent of groove heat pipe generation chemical reaction, can be the cleaning agent that absolute ethyl alcohol, deionized water etc. do not react with heat resistant material.
The present invention is corroded the capillary wick surface by chemical reagent, generate a kind of trickle surface texture, improve the surface roughness of capillary wick, under the situation of not destroying capillary wick self macrostructure, also capillary suction force can be improved effectively, as shown in Figure 3, the capillary rise height contrast obtained before and after the present invention handled, capillary rise height can reach 3-4 times before not handling by the present invention, and the service behaviour for improving heat pipe has obvious effect.
The present invention is applicable to the groove heat pipe of unlike material, different cross section shape.
The foregoing description is a preferred implementation of the present invention; but embodiments of the present invention are not limited by the examples; other any do not deviate from change, the modification done under spiritual essence of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (6)
1. a method that improves groove heat pipe capillary core suction force is characterized in that, comprises the steps:
S1 cleans the groove heat pipe, drying;
S2 carries out chemical attack to dried groove inside heat pipe capillary wick to be handled;
The groove heat pipe of S3 after to corrosion treatment cleans drying.
2. a kind of method that improves groove heat pipe capillary core suction force according to claim 1 is characterized in that, chemical attack among the described S2 is handled and is specially, and the groove heat pipe is immersed corrosive agent fully or corrosive agent is instilled in the groove heat pipe capillary core.
3. a kind of method that improves groove heat pipe capillary core suction force according to claim 2 is characterized in that, described corrosive agent is acid or the base reagent with groove inside heat pipe capillary wick material generation chemical reaction.
4. a kind of method that improves groove heat pipe capillary core suction force according to claim 1 is characterized in that described cleaning is specially, and adopts cleaning agent directly to clean or adopt supersonic wave cleaning machine.
5. a kind of method that improves groove heat pipe capillary core suction force according to claim 4 is characterized in that described cleaning agent is absolute ethyl alcohol or deionized water.
6. a kind of method that improves groove heat pipe capillary core suction force according to claim 1; it is characterized in that; also comprise among the described S2 groove heat pipe outer wall is carried out anti-corrosion protection, described anti-corrosion protection is specially, and glues obedient protection film or is coated with protective paint at the groove heat pipe outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101432582A CN103225976A (en) | 2013-04-23 | 2013-04-23 | Method for increasing suction force of capillary core in groove heat pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101432582A CN103225976A (en) | 2013-04-23 | 2013-04-23 | Method for increasing suction force of capillary core in groove heat pipe |
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| CN103225976A true CN103225976A (en) | 2013-07-31 |
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| CN2013101432582A Pending CN103225976A (en) | 2013-04-23 | 2013-04-23 | Method for increasing suction force of capillary core in groove heat pipe |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107660102A (en) * | 2017-09-14 | 2018-02-02 | 南京理工大学 | Conduit nano flower composite wick structure and preparation method thereof |
| CN109373790A (en) * | 2018-09-18 | 2019-02-22 | 暨南大学 | The production method of liquid-sucking core in non-gravity heat pipe |
| CN109405610A (en) * | 2018-11-27 | 2019-03-01 | 华南理工大学 | A kind of wick structure and preparation method thereof |
| CN112696953A (en) * | 2020-12-29 | 2021-04-23 | 瑞声科技（南京）有限公司 | Preparation method of absorption core of heat dissipation element and heat dissipation element |
| CN114610126A (en) * | 2020-12-09 | 2022-06-10 | 江西新菲新材料有限公司 | Method for forming organic hydrophilic film and microgroove, soaking plate and heat sink |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3803688A (en) * | 1971-07-13 | 1974-04-16 | Electronic Communications | Method of making a heat pipe |
| US4989319A (en) * | 1989-08-03 | 1991-02-05 | Lockheed Missiles & Space Company, Inc. | Method of fabricating a graded-groove heat pipe |
| CN1661315A (en) * | 2004-02-27 | 2005-08-31 | 徐宝安 | Heat pipe of glass shell |
| CN101387445A (en) * | 2008-10-09 | 2009-03-18 | 姜振友 | High-efficiency vacuum glass thermal-collecting tube and fabrication technology thereof |
| CN101900505A (en) * | 2010-08-19 | 2010-12-01 | 燿佳科技股份有限公司 | Heat pipe and manufacturing method thereof |
-
2013
- 2013-04-23 CN CN2013101432582A patent/CN103225976A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3803688A (en) * | 1971-07-13 | 1974-04-16 | Electronic Communications | Method of making a heat pipe |
| US4989319A (en) * | 1989-08-03 | 1991-02-05 | Lockheed Missiles & Space Company, Inc. | Method of fabricating a graded-groove heat pipe |
| CN1661315A (en) * | 2004-02-27 | 2005-08-31 | 徐宝安 | Heat pipe of glass shell |
| CN101387445A (en) * | 2008-10-09 | 2009-03-18 | 姜振友 | High-efficiency vacuum glass thermal-collecting tube and fabrication technology thereof |
| CN101900505A (en) * | 2010-08-19 | 2010-12-01 | 燿佳科技股份有限公司 | Heat pipe and manufacturing method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107660102A (en) * | 2017-09-14 | 2018-02-02 | 南京理工大学 | Conduit nano flower composite wick structure and preparation method thereof |
| CN109373790A (en) * | 2018-09-18 | 2019-02-22 | 暨南大学 | The production method of liquid-sucking core in non-gravity heat pipe |
| CN109373790B (en) * | 2018-09-18 | 2020-06-16 | 暨南大学 | Method for manufacturing liquid absorption core in non-gravity heat pipe |
| CN109405610A (en) * | 2018-11-27 | 2019-03-01 | 华南理工大学 | A kind of wick structure and preparation method thereof |
| CN114610126A (en) * | 2020-12-09 | 2022-06-10 | 江西新菲新材料有限公司 | Method for forming organic hydrophilic film and microgroove, soaking plate and heat sink |
| CN112696953A (en) * | 2020-12-29 | 2021-04-23 | 瑞声科技（南京）有限公司 | Preparation method of absorption core of heat dissipation element and heat dissipation element |
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Application publication date: 20130731 |