CN104748595A - Multi-boiling exhausting method suitable for pulsating heat pipe - Google Patents
Multi-boiling exhausting method suitable for pulsating heat pipe Download PDFInfo
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- CN104748595A CN104748595A CN201510109570.9A CN201510109570A CN104748595A CN 104748595 A CN104748595 A CN 104748595A CN 201510109570 A CN201510109570 A CN 201510109570A CN 104748595 A CN104748595 A CN 104748595A
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- heat pipe
- pulsating heat
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Abstract
The invention discloses a multi-boiling exhausting method suitable for a pulsating heat pipe. All liquid is drained and all air is exhausted through multi-boiling operation, the high vacuum degree is acquired, accurate liquid filling is conducted, in other words, the pulsating heat pipe is heated, part of air in the pipe is exhausted from a liquid filling exhausting port, the pulsating heat pipe is cooled, air in the pipe is condensed, part of a liquid working medium is sucked, the liquid working medium of the pulsating heat pipe is reheated to be boiled, the liquid working medium is reversely poured to a liquid reservoir filled with the working medium, and the pipe is filled with steam of the liquid working medium. The volume of the pipe is checked through the liquid reservoir, a proper quantity of the liquid working medium is re-injected into the pulsating heat pipe, and the liquid filling rate of the pulsating heat pipe is accurately controlled. The high vacuum degree is acquired without expensive equipment, the liquid filling rate is accurately controlled through the volume checking function, production and manufacturing cost is greatly reduced, the vacuum degree is increased, and the control accuracy is improved.
Description
Technical field
The present invention relates to heat pipe and manufacture field, particularly a kind of repeatedly boiling and exhaust method being applicable to pulsating heat pipe.
Background technology
Vacuum and liquid filled ratio are the key factors affecting properties of hot pipe.Wherein, vacuum is higher, and in pipe, condensable gas is fewer, heat transfer property and the isothermal performance of heat pipe better [Hu Zhonghai etc., vacuum to the experimental study of micro heat pipe performance impact, modern Manufacturing Engineering, 2013].The implementation of vacuum mainly contains two kinds: boiling and exhaust method after evacuation liquid-filling method and topping up.Evacuation liquid-filling method depends on vacuum machine, and the performance of vacuum machine directly affects the vacuum of heat pipe.After topping up, boiling and exhaust method is that the steam that liquid working substance boiling is produced discharges inner air tube, but is difficult to the amount of liquid with precise control working medium.Document [Lu Longsheng etc., the perfusion of micro heat pipe vacuumizes manufacturing technology, mechanical engineering journal, 2009] in conjunction with two kinds of modes, topping up vacuumizing method is proposed, namely vacuumize after first topping up, then by heating, liquid working substance is evaporated as secondary exhaust, obtain higher vacuum.
But, traditional boiling and exhaust method and topping up vacuumizing method method are not all suitable for pulsating heat pipe, the vacuum implementation being applicable to pulsating heat pipe only vacuumizes the mode of rear topping up, but this mode depends critically upon vacuum machine, and vacuum does not reach the topping up vacuumizing method with secondary exhaust.Because pulsating heat pipe is made up of capillary, there is multiple loop and form closed loop, after evacuation liquid-filling, liquid working substance and steam thereof are distributed in pipe discontinuously, instead of gas-liquid layering, liquid working substance, steam all will be extracted out once vacuumize again, equally also by boiling and exhaust and liquid hold-up working medium, therefore cannot cannot carry out secondary exhaust.
Summary of the invention
The present invention is directed to the problem that conventional evacuation liquid-filling method vacuum is not high enough, break away from the dependence to vacuum machine, in conjunction with the characteristic of pulsating heat pipe gas-liquid Disjunct distribution, propose one and be simply vented liquid filling method efficiently, namely repeatedly whole liquid and air are discharged in boiling, accurate topping up after steam condition of high vacuum degree in pipe, and provide volume to check function.
The present invention realizes by the following technical solutions:
Be applicable to a repeatedly boiling and exhaust method for pulsating heat pipe, the initial and end end of described pulsating heat pipe forms loop by three-way connection, and another interface of described three-way connection connects topping up exhaust outlet, valve and liquid reservoir with a scale successively, comprises step:
(1) be once vented: place pulsating heat pipe vertically, topping up exhaust outlet, upper, opens valve, heating pulsating heat pipe makes, in partial air discharge pipe, then to cool pulsating heat pipe, and the liquid working substance in liquid reservoir is inhaled into the inner also filling part space of pulsating heat pipe;
Or,
Employing vacuumizes rear topping up method makes partial air discharge the interior also suction part liquid working substance of pulsating heat pipe;
(2) secondary exhaust: Fast Heating pulsating heat pipe is until liquid working substance boiling, and it is inner also liquid working substance and air discharge that steam is full of pulsating heat pipe 1, enters liquid reservoir through valve;
(3) cool pulsating heat pipe, steam-condensation liquefies, and realizes condition of high vacuum degree and produce suction force in pipe, and it is inner and close to being full of that liquid working substance is sucked into pulsating heat pipe;
(4) three exhausts: Fast Heating pulsating heat pipe is until liquid working substance boiling, liquid in pipe working medium and micro residue air are all discharged, valve-off, if the actual volume of unknown described pulsating heat pipe, goes to step (5), if the actual volume of known described pulsating heat pipe, skip to step (8);
(5) registration of liquid reservoir is recorded;
(6) cool pulsating heat pipe, open valve, liquid working substance is inhaled into pulsating heat pipe inside and is full of, and the registration of record liquid reservoir, records the actual volume of described pulsating heat pipe 1;
(7) Fast Heating pulsating heat pipe is until liquid working substance boiling, and liquid working substance all enters valve-off after liquid reservoir;
(8) open valve and carry out topping up, make pulsating heat pipe meet the requirements of valve-off after liquid filled ratio;
(9) seal topping up exhaust outlet, then remove valve and liquid reservoir.
Further, described topping up exhaust outlet sealing means is permanent type sealing and reinforces, or for can be used for the renewable type sealing realizing increasing or reducing pulsating heat pipe liquid filled ratio.
Further, when needs reduce pulsating heat pipe liquid filled ratio, also step is comprised:
(10) open renewable type sealing place of topping up exhaust outlet, make topping up exhaust outlet reconnect valve and liquid reservoir;
(11) pulsating heat pipe is heated, the liquid filled ratio making pulsating heat pipe reach required after liquid working substance part being discharged, or the liquid filled ratio that the liquid working substance refilling respective numbers after all being discharged by liquid working substance makes pulsating heat pipe reach required;
(12) topping up exhaust outlet is sealed.
Compared with prior art beneficial effect of the present invention is:
(1) cost is low, and the present invention only needs simple heater or conventional air exhauster, removes expensive equipment investment from;
(2) effective, the present invention can discharge all incoagulable gas in theory;
(3) controllable precision is high, the invention provides volume and checks function, calculates the volume of pulsating heat pipe, and accurately can control liquid filled ratio according to the gauge pouring in down a chimney liquid working substance in liquid reservoir;
(4) strong adaptability, the simplicity of device used in the present invention determines its adaptability, no matter be that industrial scale is produced or laboratory preparation all can use.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
In figure: 1-heat pipe; 2-topping up exhaust outlet; 3-valve; 4-liquid reservoir; 5-three-way connection.
Detailed description of the invention
Be described in further detail goal of the invention of the present invention below in conjunction with the drawings and specific embodiments, embodiment can not repeat one by one at this, but therefore embodiments of the present invention are not defined in following examples.
As shown in Figure 1, a kind of repeatedly boiling and exhaust method being applicable to pulsating heat pipe, the initial and end end of described pulsating heat pipe 1 forms loop by three-way connection 5, another interface of described three-way connection 5 connects topping up exhaust outlet 2, valve 3 and liquid reservoir 4 with a scale successively, pulsating heat pipe 1 can comprise multiple loop, only draw one of them loop in Fig. 1, do not represent to only have a unique loop.Comprise step:
(1) be once vented: place pulsating heat pipe 1 vertically, topping up exhaust outlet 2, upper, opens valve 3, heating pulsating heat pipe 1 makes in partial air discharge pipe, then cools pulsating heat pipe 1, and the liquid working substance in liquid reservoir 4 is inhaled into the inner also filling part space of pulsating heat pipe 1;
Or,
Employing vacuumizes rear topping up method makes partial air discharge the interior also suction part liquid working substance of pulsating heat pipe 1; (2) secondary exhaust: Fast Heating pulsating heat pipe 1 is until liquid working substance boiling, and it is inner also liquid working substance and air discharge that steam is full of pulsating heat pipe 1, enters liquid reservoir 4 through valve 3;
(3) cool pulsating heat pipe 1, steam-condensation liquefies, and realizes condition of high vacuum degree and produce suction force in pipe, and it is inner and close to being full of that liquid working substance is sucked into pulsating heat pipe 1;
(4) three exhausts: Fast Heating pulsating heat pipe 1 is until liquid working substance boiling, liquid in pipe working medium and micro residue air are all discharged, valve-off 3, if the actual volume of unknown described pulsating heat pipe 1, goes to step (5), if the actual volume of known described pulsating heat pipe 1, skip to step (8);
(5) registration of liquid reservoir 4 is recorded;
(6) cool pulsating heat pipe 1, open valve 3, liquid working substance is inhaled into pulsating heat pipe 1 inside and is full of, and the registration of record liquid reservoir 4, records the actual volume of described pulsating heat pipe 1;
(7) Fast Heating pulsating heat pipe 1 is until liquid working substance boiling, and liquid working substance all enters the rear valve-off 3 of liquid reservoir 4;
(8) open valve 3 and carry out topping up, make pulsating heat pipe 1 meet the requirements of valve-off 3 after liquid filled ratio;
(9) seal topping up exhaust outlet 2, then remove valve 3 and liquid reservoir 4.
As optimization, in one embodiment, described topping up exhaust outlet 2 sealing means is permanent type sealing and reinforces, or for can be used for the renewable type sealing realizing increasing or reducing pulsating heat pipe 1 liquid filled ratio, described renewable type sealing refers to that sealing place of described topping up exhaust outlet 2 can return to the state before sealing without the need to destructiveness process.
As optimization, in another embodiment, when needs reduce pulsating heat pipe 1 liquid filled ratio, also step is comprised:
(10) open renewable type sealing place of topping up exhaust outlet 2, make topping up exhaust outlet 2 reconnect valve 3 and liquid reservoir 4;
(11) pulsating heat pipe 1 is heated, the liquid filled ratio making pulsating heat pipe 1 reach required after liquid working substance part being discharged, or the liquid filled ratio that the liquid working substance refilling respective numbers after all being discharged by liquid working substance makes pulsating heat pipe 1 reach required;
(12) topping up exhaust outlet 2 is sealed.
As optimization, implementation of port sealing means can also be other recoverable modes, and as pinch seal, bending sealing, flexible plug sealing etc., be convenient to the increase and the minimizing that realize liquid filled ratio.
The present embodiment is the solution needing to provide when reducing pulsating heat pipe 1 internal-filling liquid rate rapidly and efficiently, reduces repeated labor, reduces the manufacturing cost of pulsating heat pipe 1.
The above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.All any amendments done within the spirit and principles in the present invention, equivalent to replace and improvement etc., within the protection domain that all should be included in the claims in the present invention.
Claims (3)
1. one kind is applicable to the repeatedly boiling and exhaust method of pulsating heat pipe, it is characterized in that, the initial and end end of described pulsating heat pipe (1) forms loop by three-way connection (5), another interface of described three-way connection (5) connects topping up exhaust outlet (2), valve (3) and liquid reservoir with a scale (4) successively, comprises step:
(1) be once vented: place pulsating heat pipe (1) vertically, topping up exhaust outlet (2) is upper, open valve (3), heating pulsating heat pipe (1) makes in partial air discharge pipe, then cool pulsating heat pipe (1), the liquid working substance in liquid reservoir (4) is inhaled into the inner also filling part space of pulsating heat pipe (1);
Or,
Employing vacuumizes rear topping up method makes partial air discharge the interior also suction part liquid working substance of pulsating heat pipe (1);
(2) secondary exhaust: Fast Heating pulsating heat pipe (1) is until liquid working substance boiling, and it is inner also liquid working substance and air discharge that steam is full of pulsating heat pipe (1), enters liquid reservoir (4) through valve (3);
(3) cool pulsating heat pipe (1), steam-condensation liquefies, and realizes condition of high vacuum degree and produce suction force in pipe, and it is inner and close to being full of that liquid working substance is sucked into pulsating heat pipe (1);
(4) three exhausts: Fast Heating pulsating heat pipe (1) is until liquid working substance boiling, liquid in pipe working medium and micro residue air are all discharged, valve-off (3), if the actual volume of unknown described pulsating heat pipe (1), goes to step (5), if the actual volume of known described pulsating heat pipe (1), skip to step (8);
(5) registration of liquid reservoir (4) is recorded;
(6) pulsating heat pipe (1) is cooled, open valve (3), liquid working substance is inhaled into pulsating heat pipe (1) inside and is full of, and the registration of record liquid reservoir (4), records the actual volume of described pulsating heat pipe (1);
(7) Fast Heating pulsating heat pipe (1) is until liquid working substance boiling, and liquid working substance all enters liquid reservoir (4) valve-off (3) afterwards;
(8) open valve (3) and carry out topping up, make pulsating heat pipe (1) meet the requirements of valve-off (3) after liquid filled ratio;
(9) seal topping up exhaust outlet (2), then remove valve (3) and liquid reservoir (4).
2. a kind of repeatedly boiling and exhaust method being applicable to pulsating heat pipe according to claim 1, it is characterized in that: described topping up exhaust outlet (2) sealing means is permanent type sealing and reinforces, or for can be used for the renewable type sealing realizing increasing or reducing pulsating heat pipe (1) liquid filled ratio.
3. a kind of repeatedly boiling and exhaust method being applicable to pulsating heat pipe according to claim 2, is characterized in that, when needs reduce pulsating heat pipe (1) liquid filled ratio, also comprises step:
(10) open renewable type sealing place of topping up exhaust outlet (2), make topping up exhaust outlet (2) reconnect valve (3) and liquid reservoir (4);
(11) pulsating heat pipe (1) is heated, make pulsating heat pipe (1) reach required liquid filled ratio after liquid working substance part being discharged, or the liquid working substance refilling respective numbers after all being discharged by liquid working substance make pulsating heat pipe (1) reach required liquid filled ratio;
(12) topping up exhaust outlet (2) is sealed.
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| CN201510109570.9A CN104748595B (en) | 2015-03-13 | 2015-03-13 | Multi-boiling exhausting method suitable for pulsating heat pipe |
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| CN201510109570.9A CN104748595B (en) | 2015-03-13 | 2015-03-13 | Multi-boiling exhausting method suitable for pulsating heat pipe |
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| CN104748595B CN104748595B (en) | 2017-01-25 |
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Citations (7)
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|---|---|---|---|---|
| JPS5685691A (en) * | 1979-12-12 | 1981-07-11 | Furukawa Electric Co Ltd:The | Manufacture of heat pipe |
| US20050022414A1 (en) * | 2003-07-18 | 2005-02-03 | Hul-Chun Hsu | Method and apparatus for removing vapor within heat pipe |
| CN1862209A (en) * | 2005-05-13 | 2006-11-15 | 鸿富锦精密工业（深圳）有限公司 | Vacuum liquid filling device and vacuum liquid filling method |
| CN1936478A (en) * | 2005-09-20 | 2007-03-28 | 富准精密工业(深圳)有限公司 | Working medium filling method |
| CN101349516A (en) * | 2008-09-05 | 2009-01-21 | 哈尔滨工业大学 | Apparatus for micro heat pipe vacuum pumping liquid injection |
| CN102679782A (en) * | 2012-05-31 | 2012-09-19 | 华南理工大学 | Heat pipe vacuum liquid filling and degassing method and equipment adopting same |
| CN103868381A (en) * | 2012-12-10 | 2014-06-18 | 昭和电工株式会社 | Method for manufacturing heat pipe and heat pipe module |
-
2015
- 2015-03-13 CN CN201510109570.9A patent/CN104748595B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5685691A (en) * | 1979-12-12 | 1981-07-11 | Furukawa Electric Co Ltd:The | Manufacture of heat pipe |
| US20050022414A1 (en) * | 2003-07-18 | 2005-02-03 | Hul-Chun Hsu | Method and apparatus for removing vapor within heat pipe |
| CN1862209A (en) * | 2005-05-13 | 2006-11-15 | 鸿富锦精密工业（深圳）有限公司 | Vacuum liquid filling device and vacuum liquid filling method |
| CN1936478A (en) * | 2005-09-20 | 2007-03-28 | 富准精密工业(深圳)有限公司 | Working medium filling method |
| CN101349516A (en) * | 2008-09-05 | 2009-01-21 | 哈尔滨工业大学 | Apparatus for micro heat pipe vacuum pumping liquid injection |
| CN102679782A (en) * | 2012-05-31 | 2012-09-19 | 华南理工大学 | Heat pipe vacuum liquid filling and degassing method and equipment adopting same |
| CN103868381A (en) * | 2012-12-10 | 2014-06-18 | 昭和电工株式会社 | Method for manufacturing heat pipe and heat pipe module |
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| CN104748595B (en) | 2017-01-25 |
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