CN105222628A - Pulsating heat pipe - Google Patents
Pulsating heat pipe Download PDFInfo
- Publication number
- CN105222628A CN105222628A CN201510604800.9A CN201510604800A CN105222628A CN 105222628 A CN105222628 A CN 105222628A CN 201510604800 A CN201510604800 A CN 201510604800A CN 105222628 A CN105222628 A CN 105222628A
- Authority
- CN
- China
- Prior art keywords
- junction base
- capillary array
- pipeline
- heat pipe
- base
- 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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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0266—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers
Abstract
The invention provides a kind of pulsating heat pipe, comprise hot junction base, cold junction base and capillary array; Wherein, the lower end of capillary array is arranged in the base of hot junction, and upper end is arranged in cold junction base; Cold junction base is provided with the first cavity; The upper end of capillary array is communicated with described first cavity; Hot junction base is provided with the second cavity; The lower end of capillary array is communicated with described second cavity.The lower end of hot junction base is provided with thermal conductive surface; Thermal conductive surface is for connecting thermal source.Also comprise implementation of port; The lower end of implementation of port is communicated with the first cavity through the cold junction base plate of cold junction base; Implementation of port is used for vacuumizing and being filled with working medium.In the present invention, capillary array is vertical with thermal conductive surface at the mouth of pipe, and working medium flows out or when reclaiming in pipe, for thermal conductive surface, belongs to array jetting in pipe; According to field coordination principle, this convection type can provide the most efficient heat convection under single-phase or two-phase condition, thus improves the heat exchange efficiency of pulsating heat pipe.
Description
Technical field
The present invention relates to heat transfer element, particularly, relate to a kind of pulsating heat pipe.
Background technology
Pulsating heat pipe is a kind of element utilizing working medium gas-liquid phase transition principle to realize heat and mass.Pulsating heat pipe caliber is less than the critical pipe diameter that working medium forms liquid plug, and the saturation state working medium be encapsulated in forms the plunger between phase in pipe.Pulsating heat pipe heating one end, working medium heated up, boosts, seethe with excitement, vaporize and expand, promote working medium to flow to condensation end, colling end produces axial oscillation, circulates and phase transformation during making working medium decrease temperature and pressure, condensation, contraction and backflow, thus realizes the transmission of heat.
But, there is following defect in existing pulsating heat pipe: pulsating heat pipe elbow shapes is complicated, working medium, be difficult between inside and outside tube wall and thermal source/low-temperature receiver avoid larger thermal contact resistance or thermal-conduction resistance.Though plate type pulsating heat pipe simplifies profile, thermal resistance problem does not have large improvement, and being rigidly connected between cold and hot end also makes it apply inconvenience.In pulsating heat pipe heat transfer process, convection type is only limitted to wash away, and makes heat exchange efficiency not high.The axial heat flux density of pulsating heat pipe can reach higher, but due to above reason, limits its application in high heat flux heat radiation occasion.
Summary of the invention
For defect of the prior art, the object of this invention is to provide a kind of pulsating heat pipe.
According to pulsating heat pipe provided by the invention, comprise hot junction base, cold junction base and capillary array;
Wherein, the lower end of described capillary array is arranged in the base of described hot junction, and upper end is arranged in described cold junction base;
Described cold junction base is provided with the first cavity; The upper end of described capillary array is communicated with described first cavity; Described hot junction base is provided with the second cavity; The lower end of described capillary array is communicated with described second cavity.
Preferably, the lower end of described hot junction base is provided with thermal conductive surface; Described thermal conductive surface is for connecting thermal source.
Preferably, also implementation of port is comprised; Described first cavity of cold junction base plate connection of described cold junction base is passed in the lower end of described implementation of port;
Described implementation of port is used for vacuumizing and being filled with working medium.
Preferably, described capillary array comprises multiple first pipeline and multiple second pipeline;
The diameter of described first pipeline is greater than the diameter of described second pipeline; Described first pipeline and described second pipeline are interspersed in cross in the plane parallel with base.
Preferably, described hot junction base and described cold junction base adopt glass or stainless steel to make;
Described capillary array adopts copper tube or aluminum pipe to make.
Preferably, described capillary array adopts the pipeline array of 3x3.
Preferably, described implementation of port, described cold junction base, described capillary array, described hot junction base and described thermal conductive surface are tightly connected.
Preferably, the port of multiple first pipeline and multiple second pipeline is provided with fillet.
Preferably, the bottom of described hot junction base forms evaporator section, formation adiabatic section, upper end; Described capillary array forms condensation segment; Described cold junction base forms reflux section.
Compared with prior art, the present invention has following beneficial effect:
1, in the present invention, capillary array is vertical with thermal conductive surface at the mouth of pipe, and working medium flows out or when reclaiming in pipe, for thermal conductive surface, belongs to array jetting in pipe; According to field coordination principle, this convection type can provide the most efficient heat convection under single-phase or two-phase condition, thus improves the heat exchange efficiency of pulsating heat pipe;
2, the thermal conductive surface of midplane shape of the present invention also makes the thermal-conduction resistance between thermal source to heat-exchange working medium at utmost to reduce;
3, the present invention is rationally distributed, and structure is simple, is easy to promote.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 is the structural representation in the present invention direction;
Fig. 2 is the structural representation in another direction of the present invention;
Fig. 3 is schematic cross-section of the present invention.
In figure:
1 for filling mouth;
2 is cold junction base;
3 is hot junction base;
4 is capillary array;
5 is thermal conductive surface;
6 is cold junction base plate;
10 is evaporator section;
20 is adiabatic section;
30 is condensation segment;
40 is reflux section;
100 is pulsating heat pipe.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.
In the present embodiment, as shown in Figure 1, a kind of pulsating heat pipe 100 provided by the invention, comprises implementation of port 1, hot junction base 3, cold junction base 2, capillary array 4 and thermal conductive surface 5.
Wherein, described implementation of port 1 is elongated tubular, is closely connected, is made up of the material with certain mechanical strength with cold junction base plate 6, for vacuumizing and being filled with working medium.
Described cold junction base 2 is made up, as glass, stainless steel etc. are made of the relative not good material of thermal conductivity.Implementation of port 1 is by aperture through cold junction base plate 6, and described cold junction base 2 forms reflux section 40, and described cold junction base 2 is provided with the first cavity, as shown in Figure 2.And cold junction base 2 also connects capillary array 4, the pipeline in capillary array 4 is connected with reflux section 40.In the present embodiment, capillary array is the array of 3x3, and concrete array parameter can be done to change with the need.
Described capillary array 4 adopts high thermal conductivity tubing to make, as copper tube, aluminum pipe etc. are made.Wherein, capillary array 4 comprises multiple first pipeline and multiple second pipeline, wherein, the diameter of the first pipeline is greater than the diameter of the second pipeline, but the diameter that the diameter of the first pipeline is greater than the second pipeline is all less than the critical hydraulic diameter that working medium capillary energy forms liquid plug.Capillary array 40 is exposed to beyond hot junction base 3, cold junction base 2, and the part contacted with external environment forms condensation segment 30.The first pipeline in capillary array 40 and the second pipeline are interspersed in cross in the plane parallel with base.Wherein 5 is the second pipeline, and 4 is the first pipeline.To the external refrigeration of condensation segment 30, can be as thermal source in air-cooled, water-cooled or the evaporimeter being packaged in loop circuit heat pipe.
The other end of capillary array 4 is connected with hot junction base 3.Described hot junction base 3 is provided with the second cavity.Hot junction base 3 adopts the relative not good material of thermal conductivity to make, and as glass, stainless steel etc. are made, the second cavity is as adiabatic section 20.Hot junction base 3 forms evaporator section 10, and fillet process is all played in the port of multiple first pipeline and multiple second pipeline.
To fill at the bottom of mouth 1, cold junction 2, hot junction base 3, capillary array 4 and thermal conductive surface 5, by shown in Fig. 2 with encapsulating method, as connections such as welding, splicing, fusions.
Described pulsating heat pipe 100, after having filled, forms saturated vapor and the discrete and state of depositing of liquid, occurs the distribution of fluid column and vent plug in capillary in inner space.When thermal conductive surface 5 receives heat from thermal source, the working medium in evaporator section 10 cavity is made to heat up, boost, seethe with excitement, vaporize and expand, promote the capillary array that working medium enters condensation segment 30, condensation segment 30 makes working medium decrease temperature and pressure, condensation, contraction, together with the connection effect of reflux section 40, make working medium produce axial oscillation or circulate, thus realize the transmission of heat and quality.Because capillary array is set to two kinds of pipelines of large and small caliber, and pressure during air bubble expansion is easier to working medium is moved to the pipeline that diameter is larger.Therefore for the cavity of evaporator section, the pipeline mouth of pipe of Large Diameter Pipeline easily forms the backflow that working medium is left, and the mouth of pipe of pipe with small pipe diameter easily forms the jet that working medium enters, and impels in every root pipeline and occurs directed flowing.Jet-backflow the design of capillary array form, the heat convection carrying out high heat flux will be conducive to according to field coordination principle, jet-the return port of array distribution fully can eliminate the impact of thermal boundary layer, can not be circled round be detained after working medium jet contacts with thermal conductive surface 5 by reclaiming immediately.
Because the tube wall area of capillary array 4 can much larger than the area of thermal conductive surface 5, so pulsating heat pipe 100 provided by the invention can be used as expand thermal use, highdensity hot-fluid is converted into low-density hot-fluid, thus it is loose that other devices can be utilized to be transferred to row at a distance with less cost.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (9)
1. a pulsating heat pipe, is characterized in that, comprises hot junction base, cold junction base and capillary array;
Wherein, the lower end of described capillary array is arranged in the base of described hot junction, and upper end is arranged in described cold junction base;
Described cold junction base is provided with the first cavity; The upper end of described capillary array is communicated with described first cavity; Described hot junction base is provided with the second cavity; The lower end of described capillary array is communicated with described second cavity.
2. pulsating heat pipe according to claim 1, is characterized in that, the lower end of described hot junction base is provided with thermal conductive surface; Described thermal conductive surface is for connecting thermal source.
3. pulsating heat pipe according to claim 2, is characterized in that, also comprises implementation of port; Described first cavity of cold junction base plate connection of described cold junction base is passed in the lower end of described implementation of port;
Described implementation of port is used for vacuumizing and being filled with working medium.
4. pulsating heat pipe according to claim 1, is characterized in that, described capillary array comprises multiple first pipeline and multiple second pipeline;
The diameter of described first pipeline is greater than the diameter of described second pipeline; Described first pipeline and described second pipeline are interspersed in cross in the plane parallel with base.
5. pulsating heat pipe according to claim 1, is characterized in that, described hot junction base and described cold junction base adopt glass or stainless steel to make;
Described capillary array adopts copper tube or aluminum pipe to make.
6. pulsating heat pipe according to claim 1, is characterized in that, described capillary array adopts the pipeline array of 3x3.
7. pulsating heat pipe according to claim 1, is characterized in that, described implementation of port, described cold junction base, described capillary array, described hot junction base and described thermal conductive surface are tightly connected.
8. pulsating heat pipe according to claim 4, is characterized in that, the port of multiple first pipeline and multiple second pipeline is provided with fillet.
9. pulsating heat pipe according to claim 1, is characterized in that, the bottom of described hot junction base forms evaporator section, formation adiabatic section, upper end; Described capillary array forms condensation segment; Described cold junction base forms reflux section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510604800.9A CN105222628A (en) | 2015-09-21 | 2015-09-21 | Pulsating heat pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510604800.9A CN105222628A (en) | 2015-09-21 | 2015-09-21 | Pulsating heat pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105222628A true CN105222628A (en) | 2016-01-06 |
Family
ID=54991727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510604800.9A Pending CN105222628A (en) | 2015-09-21 | 2015-09-21 | Pulsating heat pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105222628A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106885485A (en) * | 2017-02-25 | 2017-06-23 | 长沙理工大学 | Pulsation cool side heat pipes radiator more than a kind of hot junction variable cross-section |
| CN106935931A (en) * | 2017-03-17 | 2017-07-07 | 中国科学院工程热物理研究所 | The rigid flat tube of hot pressing conversion and thermal management device of battery |
| US11359874B2 (en) | 2020-10-19 | 2022-06-14 | Industrial Technology Research Institute | Three dimensional pulsating heat pipe |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2741187Y (en) * | 2004-07-06 | 2005-11-16 | 中南大学 | Impulsive circulating heat tube for cooling electronic device |
| CN102829660A (en) * | 2012-09-03 | 2012-12-19 | 浙江大学 | Pulse heat pipe exchanger based on foamed materials |
-
2015
- 2015-09-21 CN CN201510604800.9A patent/CN105222628A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2741187Y (en) * | 2004-07-06 | 2005-11-16 | 中南大学 | Impulsive circulating heat tube for cooling electronic device |
| CN102829660A (en) * | 2012-09-03 | 2012-12-19 | 浙江大学 | Pulse heat pipe exchanger based on foamed materials |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106885485A (en) * | 2017-02-25 | 2017-06-23 | 长沙理工大学 | Pulsation cool side heat pipes radiator more than a kind of hot junction variable cross-section |
| CN106935931A (en) * | 2017-03-17 | 2017-07-07 | 中国科学院工程热物理研究所 | The rigid flat tube of hot pressing conversion and thermal management device of battery |
| US11359874B2 (en) | 2020-10-19 | 2022-06-14 | Industrial Technology Research Institute | Three dimensional pulsating heat pipe |
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Application publication date: 20160106 |
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| RJ01 | Rejection of invention patent application after publication |