CN103424021A - Heat tube - Google Patents
Heat tube Download PDFInfo
- Publication number
- CN103424021A CN103424021A CN2012101613507A CN201210161350A CN103424021A CN 103424021 A CN103424021 A CN 103424021A CN 2012101613507 A CN2012101613507 A CN 2012101613507A CN 201210161350 A CN201210161350 A CN 201210161350A CN 103424021 A CN103424021 A CN 103424021A
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- CN
- China
- Prior art keywords
- heat pipe
- nozzle
- evaporator section
- section
- condensation segment
- 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.)
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Abstract
A heat tube comprises a tube body, a capillary structure and working fluid, wherein an accommodating space is formed inside the tube body, and the capillary structure and the working fluid are accommodated in the accommodating space. The tube body comprises an evaporating section and a condensing section. A nozzle is arranged in the tube body and between the evaporating section and the condensing section and is provided with a first surface and a second surface which are opposite to the evaporating section and the condensing section respectively. A plurality of nozzle holes penetrating the first surface and the second surface are formed in the nozzle, and hole diameters of the nozzle holes gradually decrease from the evaporating section to the condensing section. By the aid of the nozzle holes, vapor steam can be quickly transferred to the condensing end to be cooled and release heat energy, and heat conduction performance of the heat tube can be improved.
Description
Technical field
The present invention relates to a kind of heat transfer element, particularly a kind of for transmitting the heat pipe of electronic component heat.
Background technology
Heat pipe is a kind of element that utilizes liquid, vapour phase to change to reach quick transferring heat.Usually an end of heat pipe is evaporation ends, the other end is condensation end, when the evaporation ends heat, working fluid is vaporized rapidly, steam is toward the condensation end transmission of low temperature, and condensation end sees through the radiating fin release heat, and the working fluid of vaporization reverts to liquid, the capillary structure that sees through again heat pipe inner wall flows back to evaporation ends, constantly loops hot biography effect.
But, there is following defect in heat pipe of the prior art: because steam and the working fluid of inside heat pipe is to flow in the opposite direction, make working fluid can be subject to the obstruction of steam by the capillary structure backflow of heat pipe inner wall, cause working fluid to be back to the situation that evaporation ends has undersupply, thereby allow evaporation ends generation mummification phenomenon, cause the heat pipe for thermal conductivity performance not good, limited the heat biography amount of heat pipe.In addition, the capillary structure be provided with in heat pipe, can cause steam channel to dwindle, thereby the speed that after the evaporation ends heat absorption, the steam of vaporization is transferred to condensation end along steam channel can reduce, and causes the heat pipe for thermal conductivity performance not good.
Summary of the invention
In view of this, be necessary to provide preferably heat pipe of a kind of heat conductivility.
A kind of heat pipe, comprise that inside is formed with the body of receiving space and is arranged at capillary structure and the working fluid in this receiving space.This body comprises evaporator section and condensation segment.Also be provided with a nozzle in body between described evaporator section and condensation segment, described nozzle has relative with evaporator section and condensation segment respectively first surface and second surface.Be formed with the some nozzle bores that connect described first surface and second surface on described nozzle, the aperture of described nozzle bore is dwindled to the condensation segment direction gradually by evaporator section.
Above-mentioned heat pipe arranges a nozzle with a plurality of nozzle bores in body, the nozzle bore aperture is dwindled to the condensation segment direction gradually by evaporator section, thereby vapor stream speed when Jiao Xiaode exit, the aperture of each nozzle bore can be strengthened, make vapor stream more fast transport to condensation end cooling and releases heat, can improve the heat conductivility of heat pipe.And, nozzle bore is for reducing hole structure, can be so that the chance that steam spreads towards periphery reduce, can reduce the phase mutual interference between the capillary structure on vapor stream and inboard wall of tube body, make condensed fluid be back to evaporation ends more smooth and easy, can reach and reduce thermal resistance and promote the effect that the heat pipe maximum heat passes ability.
The accompanying drawing explanation
The sectional view that Fig. 1 is the heat pipe in first embodiment of the invention.
The sectional view that Fig. 2 is the heat pipe in second embodiment of the invention.
The sectional view that Fig. 3 is the heat pipe in third embodiment of the invention.
The part perspective view of the nozzle that Fig. 4 is the heat pipe in Fig. 1.
The main element symbol description
Heat pipe | 10、20、30 |
Body | 100、500、600 |
Capillary structure | 200 |
|
300 |
Evaporator section | 110、510、610 |
Condensation segment | 120、520、620 |
Adiabatic section | 130 |
Receiving space | 140 |
|
310 |
Nozzle bore | 320 |
|
311 |
|
312 |
|
530、630 |
The following specific embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Embodiment one
Refer to Fig. 1, a kind of heat pipe 10 that first embodiment of the invention provides comprise a sealing body 100, capillary structure 200 and nozzle 300 in this body 100 are set.
Described body 100 is an elongated tubular, and it comprises evaporator section 110, condensation segment 120 and the adiabatic section 130 that connects this evaporator section 110 and condensation segment 120.The material that described body 100 is good by heat conductivility is made into integration as brass, copper alloy etc., its inner receiving space 140 that forms, and the interior inclosure of this receiving space 140 has the working fluid (not shown).
Described capillary structure 200 is by the woven mesh structure of the metal wire knitted such as copper, silver or aluminium wire or by the metal powder sintered powder sintered structure formed.Described capillary structure 200 is arranged on the whole inwall of body 100, and it is for adsorbing and the described working fluid that refluxes.
Please then consult Fig. 4, described nozzle 300 is arranged between evaporator section 110 and adiabatic section 130, by evaporator section 110 and adiabatic section 130 and condensation segment 120 spaces.Described nozzle 300 comprises a body 310, and this body 310 comprises relative with condensation segment 120 with evaporator section 110 respectively first surface 311 and second surface 312.Also be formed with the some small nozzle bore 320 that connects described first surface 311 and second surface 312 on described body 310.Described nozzle bore 320 is circular along the cross section of parallel first surface 311 and second surface 312, and its inner surface is a smooth surface, is convenient to the steam circulation.Described nozzle bore 320 is to reduce the hole structure, and its pore size is dwindled to condensation segment 120 directions gradually by evaporator section 110, that is described nozzle bore 320 large aperture one ends are towards evaporator section 110, and small-bore one end is towards condensation segment 120.In the present embodiment, described nozzle 300 metal material good by thermal conductivity made, and it is located at the boundary of evaporator section 110 and adiabatic section 130.
Described heat pipe 10 is when work, and its evaporator section 110 is heated, and the working fluid at evaporator section 110 places is vaporized into steam, and this steam flows to condensation segment 120 heat releases by nozzle 300.According to mass conservation law, the mass flowrate that steam enters described nozzle bore 320 equals to leave the mass flowrate of described nozzle bore 320, can be write as ρ
InV
InA
In=ρ
outV
outA
out, wherein, ρ is vapour density, the sectional area that A is nozzle bore 320, and V is the flow velocity of steam in this cross section, and hence one can see that, and its flow velocity of sectional area general goal of nozzle bore 320 is little, and its flow velocity of the little place of sectional area is large.So vapor stream speed when Jiao Xiaode exit, the aperture of each nozzle bore 320 is strengthened, each nozzle bore 320 has the steam of acceleration to the mobile effect of condensation segment 120 directions.So nozzle 300 can make vapor stream more fast transport to condensation segment 120 cooling and releases heat, can improve the heat conductivility of heat pipe 10.In addition, the nozzle bore 320 of described nozzle 300 is to reduce the hole structure, thereby can be so that the chance that steam spreads towards periphery reduces, can reduce the phase mutual interference of 200 of capillary structures on vapor stream and body 100 inwalls, make condensed fluid be back to evaporator section 110 more smooth and easy, can reach and reduce thermal resistance and promote the effect that heat pipe 10 maximum heat pass ability.
In addition, then according to law of conservation of energy, q-w=h
out-h
In+ (V
out 2-V
In 2)/2+g (z
out-z
In) (wherein, q is hot biography amount, and w is the nozzle bore work done, and h is enthalpy, and V is flow velocity, the height that z is manhole appendix), because nozzle bore 320 does not have the difference in height of manhole appendix of work done and nozzle bore 320 little, the above-mentioned relation formula can further be simplified to q=h
out-h
In+ (V
out 2-V
In 2)/2, can find out from this formula, when steam flows to nozzle 300, can produce heat loss, and while flowing to nozzle bore 320 exit, speed strengthens, and enthalpy reduces, and interiorly can change kinetic energy into, and the temperature of the vapor stream in nozzle bore 320 exits can descend.So nozzle 300 can reduce vapor (steam) temperature rapidly, to promote condensation efficiency.
Embodiment two
Refer to Fig. 2, the heat pipe 20 that second embodiment of the invention provides and the difference of the heat pipe 10 in the first embodiment are: the body 500 of heat pipe 20 does not comprise adiabatic section, evaporator section 510 directly is connected with condensation segment 520, nozzle 300 is arranged between evaporator section 510 and condensation segment 520, in the present embodiment, described nozzle 300 is located at the boundary of evaporator section 110 and condensation segment 520.The body surface of described condensation segment 520 also is provided with fin 530.
Embodiment three
Refer to Fig. 3, the heat pipe 30 that third embodiment of the invention provides and the difference of the heat pipe 10 in the first embodiment are: the evaporator section 610 of heat pipe 30 is positioned at the centre of body 600, and condensation segment 620 is connected to the both sides of described evaporator section 610, two nozzles 300 are separately positioned between the condensation segment 620 of evaporator section 610 and both sides, in the present embodiment, described two nozzles 300 are located at respectively two boundaries of evaporator section 610 and condensation segment 620.The body surface of described condensation segment 220 also is provided with fin 630.
Compared to prior art, heat pipe of the present invention arranges a nozzle with a plurality of nozzle bores in body, the nozzle bore aperture is dwindled to the condensation segment direction gradually by evaporator section, thereby vapor stream speed when Jiao Xiaode exit, the aperture of each nozzle bore can be strengthened, make vapor stream more fast transport to condensation end cooling and releases heat, can improve the heat conductivility of heat pipe.And, nozzle bore is for reducing hole structure, can be so that the chance that steam spreads towards periphery reduce, can reduce the phase mutual interference between the capillary structure on vapor stream and inboard wall of tube body, make condensed fluid be back to evaporation ends more smooth and easy, can reach and reduce thermal resistance and promote the effect that the heat pipe maximum heat passes ability.
Be understandable that, for the person of ordinary skill of the art, can make change and the distortion that other various pictures are answered by technical conceive according to the present invention, and all these change and distortion all should belong to the protection domain of the claims in the present invention.
Claims (10)
1. a heat pipe, comprise that inside is formed with the body of receiving space and is arranged at capillary structure and the working fluid in this receiving space, this body comprises evaporator section and condensation segment, it is characterized in that: also be provided with a nozzle in the body between described evaporator section and condensation segment, described nozzle has relative with evaporator section and condensation segment respectively first surface and second surface, be formed with the some nozzle bores that connect described first surface and second surface on described nozzle, the aperture of described nozzle bore is dwindled to the condensation segment direction gradually by evaporator section.
2. heat pipe as claimed in claim 1 is characterized in that: described nozzle bore along the cross section of parallel first surface and second surface for circular.
3. heat pipe as claimed in claim 1, it is characterized in that: the inner surface of described nozzle bore is a smooth surface.
4. heat pipe as claimed in claim 1, it is characterized in that: described nozzle is made by metal material.
5. heat pipe as claimed in claim 1, it is characterized in that: described body also comprises the adiabatic section of the described evaporator section of a connection and condensation segment, and described nozzle is arranged between evaporator section and adiabatic section.
6. heat pipe as claimed in claim 5, it is characterized in that: described nozzle is arranged on the boundary of evaporator section and adiabatic section.
7. heat pipe as claimed in claim 1, it is characterized in that: described evaporator section is positioned at the centre of described body, and condensation segment is connected to the both sides of described evaporator section, and described nozzle is arranged between evaporator section and condensation segment.
8. heat pipe as claimed in claim 7, it is characterized in that: described nozzle is arranged on the boundary of evaporator section and condensation segment.
9. heat pipe as claimed in claim 1, it is characterized in that: described body is made into integration by brass, copper alloy.
10. heat pipe as claimed in claim 1, it is characterized in that: described capillary structure is arranged on the whole inwall of body.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2012101613507A CN103424021A (en) | 2012-05-23 | 2012-05-23 | Heat tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2012101613507A CN103424021A (en) | 2012-05-23 | 2012-05-23 | Heat tube |
Publications (1)
Publication Number | Publication Date |
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CN103424021A true CN103424021A (en) | 2013-12-04 |
Family
ID=49649135
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2012101613507A Pending CN103424021A (en) | 2012-05-23 | 2012-05-23 | Heat tube |
Country Status (1)
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CN (1) | CN103424021A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113048822A (en) * | 2021-03-30 | 2021-06-29 | 联想(北京)有限公司 | Heat pipe, electronic device, and method for processing heat pipe |
CN114046680A (en) * | 2021-11-23 | 2022-02-15 | 联想(北京)有限公司 | Heat pipe and manufacturing method thereof |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002318085A (en) * | 2001-04-18 | 2002-10-31 | Hitachi Cable Ltd | Heat pipe and its manufacturing method |
CN101029805A (en) * | 2006-03-03 | 2007-09-05 | 富准精密工业(深圳)有限公司 | Hot pipe |
CN101813429A (en) * | 2009-02-20 | 2010-08-25 | 富瑞精密组件(昆山)有限公司 | Heat pipe and manufacturing method thereof |
US20100263835A1 (en) * | 2009-04-17 | 2010-10-21 | Young Green Energy Co. | Heat pipe |
-
2012
- 2012-05-23 CN CN2012101613507A patent/CN103424021A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002318085A (en) * | 2001-04-18 | 2002-10-31 | Hitachi Cable Ltd | Heat pipe and its manufacturing method |
CN101029805A (en) * | 2006-03-03 | 2007-09-05 | 富准精密工业(深圳)有限公司 | Hot pipe |
CN101813429A (en) * | 2009-02-20 | 2010-08-25 | 富瑞精密组件(昆山)有限公司 | Heat pipe and manufacturing method thereof |
US20100263835A1 (en) * | 2009-04-17 | 2010-10-21 | Young Green Energy Co. | Heat pipe |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113048822A (en) * | 2021-03-30 | 2021-06-29 | 联想(北京)有限公司 | Heat pipe, electronic device, and method for processing heat pipe |
CN114046680A (en) * | 2021-11-23 | 2022-02-15 | 联想(北京)有限公司 | Heat pipe and manufacturing method thereof |
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Application publication date: 20131204 |