CN101776407A - Flat-plate loop heat pipe - Google Patents
Flat-plate loop heat pipe Download PDFInfo
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- CN101776407A CN101776407A CN200910002052A CN200910002052A CN101776407A CN 101776407 A CN101776407 A CN 101776407A CN 200910002052 A CN200910002052 A CN 200910002052A CN 200910002052 A CN200910002052 A CN 200910002052A CN 101776407 A CN101776407 A CN 101776407A
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- flat
- heat pipe
- imbibition core
- loop heat
- plate loop
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Abstract
The invention discloses a flat-plate loop heat pipe. A first liquid aspirating core and a first supporting frame form an evaporation chamber; and a second liquid aspirating core and a second supporting frame form a compensated chamber. Therefore, the problems that the conventional loop heat pipe is difficult to start under low-wattage heat sources and the first liquid aspirating core is dried up are solved.
Description
Technical field
The present invention is relevant more detailed a kind of flat-plate loop heat pipe that is meant with thermal transmission element.
Background technology
(loop heat pipe LHP) is existing a kind of effective heat dissipation element to loop heat pipe; General loop heat pipe includes an evaporation part (evaporator), a vapor line (vapor line), a condensation part (condenser) and a liquid line (liquid line), and is communicated with each other by above-mentioned parts and to form a loop; Still be filled with working fluid in this loop, and this evaporation part has capillary structure and is connected with a thermal source; Be provided with compensated chamber (compensation chamber) between the capillary structure in this liquid line and this evaporation part.When the evaporation part of loop heat pipe absorbed heat from thermal source, the heat of vaporization that the working fluid in this loop heat pipe also absorbs from this thermal source formed steam; Steam is via this vapor line this condensation part of flowing through, and condenses in this condensation part heat release and to be converted to liquid working fluid, and afterwards, working fluid is back to compensated chamber and evaporation part via this liquid line, finishes a circulation.By the above-mentioned mode of action, working fluid evaporates repeatedly, condenses, heat absorption, heat release constantly, and then reach the purpose of heat radiation.
General loop heat pipe is to adopt the sintering powder agglomates as the capillary structure in the evaporation part, because the sintering powder agglomates is to be the entity powder agglomates, flow resistance is bigger, is under the low wattage situation at thermal source therefore, is difficult to start the circulation of dispelling the heat; Also have, when working fluid in the evaporation rate of evaporation part reflux rate greater than its liquid line, and be difficult to working fluid is drawn onto evaporimeter from the compensated chamber and cause dry-out, and then reduce the heat-transfer capability of loop heat pipe.
Summary of the invention
In view of this, shortcoming at above-mentioned existing apparatus, main purpose of the present invention then provides a kind of flat-plate loop heat pipe, its situation at low wattage thermal source can also allow formed steam loss to this vaporization chamber, and in this vaporization chamber and clear, so the flow resistance of steam is less, can not cause the situation that the inner local pressure of vaporization chamber is excessive and be difficult to start.
Secondary objective of the present invention provides a kind of flat-plate loop heat pipe, can avoid this vaporization chamber that dry-out is arranged, and then strengthens the heat-transfer capability of loop heat pipe.
In order to the goal of the invention of taking off on reaching, the present invention comprises a container, and it comprises a casing and a lid, and both form a room in conjunction with the back; This casing has two openings, is respectively a vapor outlet port and a liquid inlet.One first imbibition core is located at this room below, and the general one-tenth of this first imbibition core one ring-type thin slice body is laid with a plurality of micropores on its lamellar body, and this vapor outlet port of openend driving fit of this first imbibition core forms a vaporization chamber again; One second imbibition core, place this room top, the general one-tenth of this second imbibition core one ring-type thin slice body, be laid with a plurality of micropores on its lamellar body, and this first imbibition core of partly fitting below this second imbibition core, this liquid inlet of opening driving fit of this second imbibition core again, and form a compensated chamber in this second imbibition in-core portion.One circulation pipe has a vapor line, a condensate line, a liquid return tube line and a liquid injection port; One end of this vapor line and this steam orifice driving fit; One end of this condensate line and this vapor line driving fit; This liquid return tube line, one end and this condensate line driving fit, the other end then with this liquid inlet driving fit; This liquid injection port is formed on any place of this vapor line and this liquid return tube line; One working fluid is charged into this circulation pipe, in order to become the media of heat absorption and heat release.
By this formed vaporization chamber of first imbibition in-core portion, allow the formed steam of working fluid appear this imbibition core easily and enter this vaporization chamber; Thus, the flow resistance of steam is less, can not cause the situation that the inner local pressure of vaporization chamber is excessive and be difficult to start; In addition, form a compensated chamber by one second imbibition core, be close to this first imbibition core and do not contact thermal source because of this second imbibition core again, do not produce evaporation, lasting absorption is positioned at the working fluid of this compensated chamber, be to strengthen replenishing of the required working fluid of one first imbibition core, can avoid this vaporization chamber that dry-out is arranged, and then strengthen the heat-transfer capability of loop heat pipe.
Description of drawings
For the present invention further is described, below in conjunction with preferred embodiment of the present invention and cooperate the following icon to describe in detail, wherein:
Fig. 1 is the phantom of a preferred embodiment of the present invention;
Fig. 2 is the explosive view of a preferred embodiment of the present invention;
Fig. 3 is the imbibition core of a preferred embodiment of the present invention;
Fig. 4 is the bracing frame of a preferred embodiment of the present invention.
The specific embodiment
See also Fig. 1 to Fig. 4, the flat-plate loop heat pipe 1 of a preferred embodiment of the present invention, it includes: a container 20, two imbibition cores 30,40, two bracing frames 50,60, a circulation pipe 70 and a working fluid 80.
This container 20 is to comprise a casing 21 and a lid 22, and both form a room 23 in conjunction with the back; This casing 21 has two openings, is respectively a vapor outlet port 211 and a liquid inlet 212; The distance of distance at the bottom of the case of the middle position of this vapor outlet port 211 and this casing 21 at the bottom of less than the case of the middle position of this liquid inlet 212 and this casing 21, and this vapor outlet port 211 is divided into this casing 21 left and right sides with this liquid inlet 212.
Described imbibition core 30,40 has capillary structure, is respectively one first imbibition core 30 and one second imbibition core 40; This first and second imbibition core 30,40, be shaped to a ring bodies by a thin slice respectively, the one end is a blind end 31,41, the other end is open end 32,42, be laid with a plurality of micropores on its lamellar body, can be made by porous material, this porous material can be the composite structure of sintered powder (sinteredpowder), trickle groove (fine groove), net (mesh), fiber (fiber) or said structure combination, present embodiment is to be example with laminar wire netting, and this wire netting is the above wire nettings of 100 meshes.
Support frame as described above 50,60 is respectively one first bracing frame 50 and one second bracing frame 60; This first bracing frame 50 and second bracing frame 60 be with the wire netting below 20 meshes reel form be body formed by a thin slice respectively be a ring bodies, the one end is a blind end 51,61, the other end is open end 52,62, be laid with a plurality of micropores on its lamellar body, main sheathed mutually with this first imbibition core 30 and this second imbibition core 40, have preferable rigidity of support after making this first imbibition core 30 and the second imbibition core 40 and support frame as described above 50,60 sheathed.
This first imbibition core 30 and this first bracing frame 50 are sheathed mutually and form an evaporation mold block structure 100 with these blind end 31,51 same directions, and be located at this room 23 bottoms, make this open end 32,52 towards and this vapor outlet port 211 of driving fit, and at this first imbibition core 30 inner vaporization chambers 33 that form.This second imbibition core 40 and this second bracing frame 60 are sheathed mutually and form a compensating module structure 200 with these blind end 41,61 same directions, and be located at this room 23 tops, make this open end 42,62 towards and this liquid inlet 212 of driving fit, in this second imbibition core 40 inner compensated chambers 43 that form; The summation of the height of above-mentioned evaporation mold block structure 100 of while and the height of compensating module structure 200, more preferably greater than these room 23 height, this evaporation mold block structure 100 is compressed mutually with this compensating module structure 200, that is this evaporation mold block structure 100 below and above with these container 20 bottoms and this compensating module structure 200 bigger binding face is arranged respectively, and this compensating module structure 200 below and above with these evaporation mold block structure 100 tops and container 20 tops bigger binding face is arranged respectively.
This circulation pipe 70 has a vapor line 71, a condensate line 72, a liquid return tube line 73 and a liquid injection port 74; This vapor line 71 is an end and this steam orifice driving fit 211, in order to the guiding flow of vapor; These condensate line 72, one ends and 71 driving fits of this vapor line; The periphery wall of this condensate line 72 also can be provided with heat abstractor 75, in order to strengthen the heat radiation condensation function that this coagulates pipe; This heat abstractor can be fin, fan or other cooling body, is to be example with the fin in the present embodiment.This liquid return tube line 73, one end and 72 driving fits of this condensate line, the other end then with these liquid inlet 212 driving fits.This liquid injection port 74 is formed in any place of this vapor line 71 and this liquid return tube line 72; This liquid injection port 74 be for inject fluid, to vacuumize and seal this flat-plate loop heat pipe 1 used.
This working fluid 80 is to be injected into this flat-plate loop heat pipe 1 from this liquid injection port 74; This working fluid can be water, methyl alcohol, ammoniacal liquor or fluorine Lyons.
The above is a kind of flat-plate loop heat pipe 1 provided by the present invention, and its each member and assembling mode introduction thereof then are described below its handling characteristics again:
This flat-plate loop heat pipe 1 can be used for central processing unit, light emitting diode or other heater element and uses.Please consult Fig. 1 again, one of contact etc. the thermal source contact at the bottom of the outside case of this casing 21 with central processing unit or light emitting diode, this thermal source is that its heat is passed to this container 20 and this evaporation mold block structure 100; Exist the working fluid 80 in these first imbibition core, 30 capillary structures to absorb the heat that is transmitted from this thermal source 90; The heat that absorbs when this working fluid 80 is during greater than its latent heat, and this working fluid 80 will carry out phase change, changes into to steam from liquid to be full of this vaporization chamber 33; Steam flows into these vapor outlet port 211 from this vaporization chamber 33 and flows into this vapor line 71 again, and along the directed stream of this vapor line 71 to this condensate line 72; At condensate line 72 places, steam is discharged into the heat that itself absorbed on this condensate line 72 and carries out heat exchange with the external world, and is strengthened the effect of above-mentioned heat radiation by being provided with of heat abstractor 75; Steam will carry out phase change again, and be converted into liquid state from gaseous state after discharging the heat that it absorbed; Go back to liquid working fluid 80, the aforementioned steam that can be subjected to promotes, and continues to flow to this liquid return tube line 73, flows back to the compensated chamber 43 of this compensating module structure 200 from this liquid inlet 212; By the capillary structure effect of this second imbibition core 40, working fluid 80 will reaching this first imbibition core 30 again be provided with absorbing again the heat that spreads out of from thermal source again for this, and forms a working cycles.
In the aforesaid operations flow process, this first imbibition core 30 can be propped up and form this vaporization chamber 33 by being provided with of this first bracing frame 50, can reduce the flow resistance of steam, in the situation of low wattage thermal source is to allow the heat radiation that circulates of the flow of vapor that produced, does not have to be difficult to the generation of startup situation.In addition, continuing to absorb this working fluid 80 and flow to this first imbibition core 30 by this second imbibition core 40 is set, is to avoid this first imbibition core 30 to produce dry-out.
What must be illustrated is that in the foregoing description, this evaporation mold block structure 100 is made of with this first bracing frame 50 this first imbibition core 30, but if the rigidity of this first imbibition core 30 is enough, then can not need install this first bracing frame 50 additional; Similarly, this compensating module structure 200, constituted with this second bracing frame 60 by this second imbibition core 40, but if the rigidity of this second imbibition core 40 is enough, then can not need install additional this first bracing frame 60 (touch upon with respect to above-mentioned institute, this moment this first imbibition core 30 the summation of height and the height of this second imbibition core 40, more preferably greater than this room 23 highly, height and this second imbibition core 40 of the first imbibition core 30 are compressed mutually, allow press contacts that bigger binding face is arranged).
In addition, main spirit of the present invention is to utilize a capillary structure that the compensated chamber 43 of hollow and the vaporization chamber 33 of hollow are isolated mutually, therefore in design, also can only adopt a ring bodies imbibition core to be arranged in container bottom and get final product with these these vapor outlet port 211 corresponding applyings, this promptly just can reach compensated chamber 43 and vaporization chamber 33 mutual effects of isolating, this ring bodies imbibition core can reduce the flow resistance of steam, in the situation of low wattage thermal source is to allow the heat radiation that circulates of the flow of vapor that produced, does not have to be difficult to the generation of startup situation.
Claims (14)
1. flat-plate loop heat pipe, it comprises:
One container, its inner room that forms, this container is formed with two openings, is respectively a vapor outlet port and a liquid inlet; The distance of distance at the bottom of the middle position of this vapor outlet port and the case of this casing at the bottom of less than the case of the middle position of this liquid inlet and this casing; The middle position of this vapor outlet port is lower than the middle position of this liquid inlet;
One lid, this lid are the case mouths of this casing of driving fit;
At least one imbibition core is a ring bodies, is laid with a plurality of micropores on it, be arranged in container bottom and with the corresponding applying of this vapor outlet port;
One circulation pipe has a vapor line, a condensate line, a liquid return tube line; This vapor line, an end and this steam orifice driving fit are in order to the guiding flow of vapor; This condensate line, an end and this vapor line driving fit; This liquid return tube line, one end and this condensate line driving fit, the other end then with this liquid inlet driving fit; One working fluid is charged in this circulation pipe in order to become the medium of heat absorption and heat release.
2. flat-plate loop heat pipe as claimed in claim 1, this imbibition core one end is a blind end, the other end is the open end, make its open end and with the corresponding applying of this vapor outlet port.
3. flat-plate loop heat pipe as claimed in claim 2, also comprise at least one bracing frame, it is a ring bodies, the one end is a blind end, the other end is the open end, be laid with a plurality of micropores on its lamellar body, sheathed mutually and form an evaporation mold block structure with this blind end and the same direction of this imbibition core blind end.
4. flat-plate loop heat pipe as claimed in claim 1, this imbibition core quantity is two, be respectively one first imbibition core and one second imbibition core, wherein this first imbibition core be arranged in container bottom and with the corresponding applying of this vapor outlet port, this second imbibition core place this room top and with the corresponding applying in this liquid inlet.
5. flat-plate loop heat pipe as claimed in claim 4, also comprise two bracing frames, be respectively one first bracing frame and one second bracing frame, this each bracing frame is respectively a ring bodies, the one end is a blind end, the other end is the open end, be laid with a plurality of micropores on its lamellar body, sheathed mutually and form an evaporation mold block structure with this first bracing frame blind end and this this same direction of first imbibition core blind end, and mutual sheathed and form a compensating module structure with this first bracing frame blind end and the same direction of this first imbibition core blind end.
6. flat-plate loop heat pipe as claimed in claim 4, the summation of the height of the height of this first imbibition core and this second imbibition core is greater than this room height.
7. flat-plate loop heat pipe as claimed in claim 5, the summation of this evaporation mold block structured height and compensation film block structured height is more preferably greater than this room height.
8. flat-plate loop heat pipe as claimed in claim 1, wherein, the periphery wall of this condensate line is provided with a heat abstractor.
9. flat-plate loop heat pipe as claimed in claim 1 also includes a liquid injection port, and this liquid injection port is formed between this vapor line and this liquid return tube line.
10. flat-plate loop heat pipe as claimed in claim 1, and this vapor outlet port and this liquid inlet are divided into this container left and right sides.
11. flat-plate loop heat pipe as claimed in claim 4, this each imbibition core is a wire netting, and is made with the wire netting more than 100 meshes.
12. flat-plate loop heat pipe as claimed in claim 5, this each bracing frame is a wire netting, and is made with the wire netting more than 20 meshes.
13. a flat-plate loop heat pipe, it comprises:
One container, its inner this container of a room that forms is formed with two openings, is respectively a vapor outlet port and a liquid inlet;
One evaporation mold block structure is a ring bodies, is laid with a plurality of micropores on it, is provided with a vaporization chamber in it, be arranged in container bottom and with the corresponding applying of this vapor outlet port;
One circulation pipe, an end and this steam orifice driving fit, the other end then with this liquid inlet driving fit;
One working fluid is charged in this circulation pipe in order to become the medium of heat absorption and heat release.
14. flat-plate loop heat pipe as claimed in claim 13 also includes a compensating module structure, is a ring bodies, is laid with a plurality of micropores on it, is provided with a compensated chamber in it, be arranged in container top and with the corresponding applying in this liquid inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910002052A CN101776407A (en) | 2009-01-12 | 2009-01-12 | Flat-plate loop heat pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910002052A CN101776407A (en) | 2009-01-12 | 2009-01-12 | Flat-plate loop heat pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101776407A true CN101776407A (en) | 2010-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910002052A Pending CN101776407A (en) | 2009-01-12 | 2009-01-12 | Flat-plate loop heat pipe |
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| Country | Link |
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| CN (1) | CN101776407A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105246302A (en) * | 2015-11-04 | 2016-01-13 | 天津商业大学 | Heat pipe radiator |
| CN105841527A (en) * | 2016-03-28 | 2016-08-10 | 天津商业大学 | Phase change drive loop heat pipe with evaporator of annular structure |
| CN106197103A (en) * | 2016-07-04 | 2016-12-07 | 中国科学院大学 | A kind of loop circuit heat pipe and using method |
| CN107036474A (en) * | 2017-06-14 | 2017-08-11 | 天津商业大学 | A kind of rotary loop circuit heat pipe evaporating radiator |
| CN107084636A (en) * | 2017-06-14 | 2017-08-22 | 天津商业大学 | A kind of loop circuit heat pipe evaporating radiator |
| CN107101518A (en) * | 2017-06-14 | 2017-08-29 | 天津商业大学 | A kind of rotary double-side endless loop heat pipe evaporating radiator |
| CN109405605A (en) * | 2017-08-18 | 2019-03-01 | 泽鸿(广州)电子科技有限公司 | Loop type heat pipe |
| CN112683092A (en) * | 2019-10-17 | 2021-04-20 | 新光电气工业株式会社 | Loop type heat pipe and manufacturing method thereof |
-
2009
- 2009-01-12 CN CN200910002052A patent/CN101776407A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105246302A (en) * | 2015-11-04 | 2016-01-13 | 天津商业大学 | Heat pipe radiator |
| CN105246302B (en) * | 2015-11-04 | 2017-06-30 | 天津商业大学 | A kind of heat-pipe radiating apparatus |
| CN105841527A (en) * | 2016-03-28 | 2016-08-10 | 天津商业大学 | Phase change drive loop heat pipe with evaporator of annular structure |
| CN106197103A (en) * | 2016-07-04 | 2016-12-07 | 中国科学院大学 | A kind of loop circuit heat pipe and using method |
| CN107101518A (en) * | 2017-06-14 | 2017-08-29 | 天津商业大学 | A kind of rotary double-side endless loop heat pipe evaporating radiator |
| CN107084636A (en) * | 2017-06-14 | 2017-08-22 | 天津商业大学 | A kind of loop circuit heat pipe evaporating radiator |
| CN107036474A (en) * | 2017-06-14 | 2017-08-11 | 天津商业大学 | A kind of rotary loop circuit heat pipe evaporating radiator |
| CN107101518B (en) * | 2017-06-14 | 2019-05-17 | 天津商业大学 | A kind of rotary double-side endless loop heat pipe evaporating radiator |
| CN107036474B (en) * | 2017-06-14 | 2019-05-17 | 天津商业大学 | A kind of rotary loop circuit heat pipe evaporating radiator |
| CN109405605A (en) * | 2017-08-18 | 2019-03-01 | 泽鸿(广州)电子科技有限公司 | Loop type heat pipe |
| CN109405605B (en) * | 2017-08-18 | 2024-05-03 | 泽鸿(广州)电子科技有限公司 | Loop type heat pipe |
| CN112683092A (en) * | 2019-10-17 | 2021-04-20 | 新光电气工业株式会社 | Loop type heat pipe and manufacturing method thereof |
| CN112683092B (en) * | 2019-10-17 | 2024-04-16 | 新光电气工业株式会社 | Loop type heat pipe and manufacturing method thereof |
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Application publication date: 20100714 |