CN205105508U - A heat radiation device of thermal pipe - Google Patents
A heat radiation device of thermal pipe Download PDFInfo
- Publication number
- CN205105508U CN205105508U CN201520868778.4U CN201520868778U CN205105508U CN 205105508 U CN205105508 U CN 205105508U CN 201520868778 U CN201520868778 U CN 201520868778U CN 205105508 U CN205105508 U CN 205105508U
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- liquid
- heat
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- core
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Abstract
The utility model discloses a heat radiation device of thermal pipe has solved traditional heat pipe and easily produced a dry difficult problem when high load operation, has improved the operating stability and the security of thermal current density device. The expansion chamber lies in the outside and top of casing, and there is adiabatic chamber the inboard of expansion chamber, and the inboard in adiabatic chamber is separated into working medium through the baffle and is stored chamber and compensated cavity, and the periphery of compensated cavity has second heat absorption core, and the lower part of second heat absorption core meets with first endothermic core, forms the evaporation chamber between the lower surface of first endothermic core and the bottom plate, has a plurality of microflute ways on the upper surface of bottom plate, the microflute say with first imbibition core in close contact with, the lower extreme of expansion chamber meets with the bottom plate of casing, flexible diaphragm between upper portion and the expansion chamber in chamber is stored to working medium, has reset spring between flexible sheet and the baffle, have intercommunication working medium to store the moisturizing pipeline of chamber and compensated cavity in the compensated cavity, inside feed pipe way one end is connected with working medium storage chamber, and the other end is located first imbibition core and the second imbibition core department of meeting.
Description
Technical field
The utility model relates to heat sink technology field, particularly a kind of heat-pipe radiating apparatus tackling variable working condition and high load capacity.
Background technology
Along with the develop rapidly of high heat flux device technology in high-power LED illumination, large server and aerospace field, the density of heat flow rate of single equipment is from original 0.1-10W/cm
2magnitude towards 10-1000W/cm
2and even higher magnitude is fast-developing.The evaporator of conventional heat pipe radiator is due to its process transmitted to transformation interface that relies on merely capillary draft to maintain liquid refrigerant, when tackling small-power heat radiation, stable sex chromosome mosaicism is still not serious, but when tackling varying load condition or high load capacity operating mode, due to density of heat flow rate rapid fluctuation or sharply rise, conventional heat pipe radiator relies on the operating mode that single liquid-sucking core often can not tackle sudden change and the hot-fluid sharply risen, therefore its radiating effect and operation stability not satisfactory, drastically influence the safety of high heat flux device itself.
Utility model content
The purpose of this utility model is to provide one stable operation also can effectively help high heat flux device reply operating mode frequent transitions, overcome conventional heat pipe and easily produce a dry difficult problem when heavy-duty service, improve the operation stability of density of heat flow rate device and the heat-pipe radiating apparatus of fail safe.
The technical scheme adopted for realizing the purpose of this utility model is:
A kind of heat-pipe radiating apparatus, comprise evaporator and condenser, described evaporator comprises housing, first heat exchanger core, second heat exchanger core, evaporation cavity, expansion chamber, working medium storing chamber, compensated cavity and insulation chambers, described expansion chamber is positioned at most external and the top of described housing, the inner side of described expansion chamber is provided with described insulation chambers, the inner side of described insulation chambers becomes described working medium storing chamber and compensated cavity by baffle for separating, the periphery of described compensated cavity is provided with described second heat exchanger core, the bottom of described second heat exchanger core connects with described first heat exchanger core, described evaporation cavity is formed between the lower surface of described first heat exchanger core and the base plate of described housing, in described evaporation cavity, the upper surface of described base plate is provided with multiple micro-channel, described micro-channel and described first liquid-sucking core close contact, the lower end of described insulation chambers and the upper surface flush of described micro-channel, the lower end of described expansion chamber connects with the base plate of described housing, be provided with flexible sheet between the top in described working medium storing chamber and described expansion chamber, between described flexible sheet and described dividing plate, be provided with back-moving spring, the water pipe being communicated with described working medium storing chamber and compensated cavity is installed in described compensated cavity, described water pipe is provided with the first unidirectional valve, inner liquid feeding pipeline one end is connected with described working medium storing chamber, the other end is positioned at described first liquid-sucking core and the second liquid-sucking core joint, and described inner liquid feeding pipeline is provided with the second unidirectional valve, be filled with phase change expansion working medium in described expansion chamber, in described compensated cavity, be filled with cooling working medium, steam connection one end is connected with the steam (vapor) outlet of described evaporation cavity, and the other end is connected with described condenser inlet, and liquid is taken over one end and is connected with the outlet of described condenser, and the other end is connected with the condensate liquid refluxing opening of described compensated cavity.
The Gao Yukuan of described micro-channel is respectively 0.1-5mm, and described micro-channel is parallel with described steam (vapor) outlet or is arranged vertically.
Described housing is copper or stainless steel material.
The cross section of described housing is circular or rectangle.
The porosity of described first liquid-sucking core is higher than the porosity of described second liquid-sucking core.
Described first liquid-sucking core and the second liquid-sucking core are woven wire, molecular sieve, sintering metal powder or organic polymer.
The porosity of described first liquid-sucking core is between 30%-50%, and the porosity of described second liquid-sucking core is between 50-80%.
Compared with prior art, the utility model has following beneficial effect:
1, heat-pipe radiating apparatus of the present utility model is by the appropriate design of Each part, solve and easily produce a dry difficult problem when heavy-duty service, operation stability and the fail safe of density of heat flow rate device can be improved, and can effectively help high heat flux device to tackle operating mode frequent transitions.
2, heat-pipe radiating apparatus of the present utility model is provided with insulation chambers, that plays minimizing housing absorption base plate on the one hand adds heat, on the other hand, insulation chambers the inside that the heat that can completely cut off surrounding environment is passed to evaporator is set, prevent the inner liquid refrigerant that makes because of sharply changing of heat of compensated cavity from producing evaporation blocking-up liquid to the transmission of transformation interface, improve the operation stability of heat-pipe radiating apparatus.
3, heat-pipe radiating apparatus of the present utility model adopts the liquid-sucking core of different porosities, make the conductive coefficient of two liquid-sucking cores different, the porosity of the first liquid-sucking core is higher than the porosity of described second liquid-sucking core, first liquid-sucking core adopts less porosity can ensure that liquid-gas phase transition interface has higher capillary pumped pressure head, not easily dry up during heavy-duty service, and the second liquid-sucking core adopts higher porosity, osmotic effect is good.Resultant effect shows as: reduce cooling working medium in the osmotic resistance run in the transmitting procedure of evaporation cavity in maintenance heat pipe higher drive ram simultaneously, and by a relatively large margin weaken base plate from evaporation cavity to the leakage of compensated cavity heat.
Accompanying drawing explanation
Figure 1 shows that the structural representation of the utility model heat-pipe radiating apparatus;
Figure 2 shows that the utility model heat-pipe radiating apparatus middle shell cross section is circular vertical view;
Figure 3 shows that the utility model heat-pipe radiating apparatus middle shell cross section is the vertical view of rectangle;
Figure 4 shows that the A-A cutaway view in Fig. 1;
Figure 5 shows that the B-B cutaway view in Fig. 1;
Figure 6 shows that the C-C cutaway view in Fig. 1.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
The schematic diagram of the utility model heat-pipe radiating apparatus as shown in figs 1 to 6, comprises evaporator 1 and condenser 12.Described evaporator 1 comprises housing 10, first heat exchanger core 6, second heat exchanger core 7, evaporation cavity 8, expansion chamber 3, working medium storing chamber 4, compensated cavity 5 and insulation chambers 22, and the cross section of described housing 10 is circular or rectangle.Housing 10 is copper or stainless steel material.As shown in Figure 2, the vertical view of rectangular housing as shown in Figure 3 for the vertical view of circular shell.The present embodiment is for rectangular housing, and its A-A cutaway view, B-B cutaway view and C-C cutaway view are as Figure 4-Figure 6.Described expansion chamber 3 is positioned at most external and the top of described housing 10, the inner side of described expansion chamber 3 is provided with insulation chambers 22, the inner side of described insulation chambers 22 is separated into described working medium storing chamber 4 and compensated cavity 5 by dividing plate 24, the periphery of described compensated cavity 5 is provided with described second heat exchanger core 7, and the bottom of described second heat exchanger core 7 connects with described first heat exchanger core 6.Form described evaporation cavity 8 between the lower surface of described first heat exchanger core 6 and base plate 9 part of described housing, in described evaporation cavity 8, the upper surface of described base plate 9 is provided with multiple micro-channel 23.Described micro-channel 23 and described first liquid-sucking core 6 close contact.The lower end of described insulation chambers 5 and the upper surface flush of described micro-channel 23; The lower end of described expansion chamber 3 connects with the base plate 9 of described housing.Be provided with flexible sheet 14 between the top in described working medium storing chamber 4 and described expansion chamber 3, between described flexible sheet 14 and described dividing plate 24, be provided with back-moving spring 15.The water pipe 16 being communicated with described working medium storing chamber 4 and compensated cavity 5 is installed in described compensated cavity 5, described water pipe 16 is provided with the first unidirectional valve 17, inner liquid feeding pipeline 18 one end is connected with described working medium storing chamber 4, and the other end is positioned at described first liquid-sucking core 6 and the second liquid-sucking core 7 joint.Described inner liquid feeding pipeline 18 is provided with the second unidirectional valve 19.Be filled with phase change expansion working medium in described expansion chamber 3, phase change expansion working medium can select water, ammonia, acetone, ethanol or cold-producing medium etc. to have the working medium of phase-change characteristic.Refrigeration working medium is filled with in described compensated cavity 5.Steam connection 11 one end is connected with the steam (vapor) outlet 20 of described evaporation cavity, and the other end is connected with the import of described condenser 12, and liquid adapter 13 one end is connected with the outlet of described condenser, and the other end is connected with the condensate liquid refluxing opening 21 of described compensated cavity.
Described first liquid-sucking core and the second liquid-sucking core are woven wire, molecular sieve, sintering metal powder or organic polymer.
The porosity of described first liquid-sucking core is higher than the porosity of described second liquid-sucking core.The porosity of described first liquid-sucking core is between 30%-50%, and the porosity of described second liquid-sucking core is between 50-80%.
In order to reach best radiating effect, the Gao Yukuan of described micro-channel 23 is respectively 0.1-5mm, and described micro-channel 23 can be parallel with described steam (vapor) outlet 20 or be arranged vertically.
Described expansion chamber 3 is a confined space, and the pressure in described expansion chamber 3 and the charging amount of the phase change expansion working medium many kinds of parameters such as ambient temperature, heat hot current density residing for heat abstractor determines.Namely described base plate 9 when normal operation bottom density of heat flow rate value and ambient temperature residing for heat-pipe radiating apparatus jointly determine in described expansion chamber working medium filling quantity.The quantity of described spring 15 is determined the reaction force that described flexible sheet 14 applies etc. is common by the elastic force of the phase change expansion power pressure in described expansion chamber 3 and single spring 15 and described working medium storing chamber 4, and preferred number of springs is 2-4.
The bottom of described evaporator 1 is after being subject to the external world and putting on the heat load effect of described base plate 9, heat-pipe radiating apparatus of the present utility model starts to start and starts gradually to set up stable operation circulation, add heat is passed to described first liquid-sucking core 6 lower surface by the micro-channel 23 on described base plate 9, the applying of heat makes the Working fluid phase changing between the micro-channel on described base plate 9 and in described first liquid-sucking core 6 evaporate, the steam produced after phase transformation evaporation discharges evaporator by described steam connection 11 through described steam (vapor) outlet 20, and will taking away of described base plate 9 heat be put on, the steam that phase transformation produces enters described condenser 12 and complete condensation in described condenser 12, discharge entrained heat and again become liquid condition, general liquid can carry out cold in described condenser 12, cross cold after liquid onwards transmission in liquid adapter 13, enter in described compensated cavity 5 after described condensate liquid refluxing opening 21.Because the liquid refrigerant near described base plate 9 and described first liquid-sucking core 6 constantly leaves described evaporator because phase transformation is evaporated, under the effect of the capillary draft of described first liquid-sucking core 6 and described second liquid-sucking core 7, liquid refrigerant in described compensated cavity 5 is towards transformation interface---and described micro-channel 23 is transmitted with the interface of described first liquid-sucking core 6, supplements the liquid refrigerant leaving described evaporator because of phase transformation evaporation.
When the heat load putting on described base plate 9 increases gradually, in described evaporation cavity 8, phase transformation evaporation rate can be accelerated because of the increase of heat load, and the capillary draft of the first heat exchanger core and the second liquid-sucking core has certain limit.When heat load is increased to a certain degree, general heat pipe radiator can because of evaporation rate be greater than liquid refrigerant in liquid-sucking core supplement speed and cause described evaporator produce dry-out, this normal operation for heat dissipation equipment is breakneck.Described expansion chamber 3, insulation chambers 22, working medium storing chamber 4 and with the described inner water pipe 16 of described first unidirectional valve 17 and the described inner liquid feeding pipeline 18 with described second unidirectional valve 19 is provided with in described evaporator of the present utility model.When heat load increases gradually, working medium in described expansion chamber 3 is subject to continuous heating from the heat of working medium heat convection in the heat conduction of described base plate and evaporation cavity 8 and phase transformation respectively because of the bottom surface of bottom and side, pressure now in described expansion chamber 3 can constantly rise, make the upper and lower surface of described flexible sheet 14 by force unbalance, under the effect that upper surface active force constantly increases, described flexible sheet 14 can produce distortion downwards, after liquid refrigerant in described working medium storing chamber 4 is squeezed, the junction of described first liquid-sucking core 6 and described second liquid-sucking core 7 is transported to through the described inside liquid feeding pipeline 18 with described second unidirectional valve 19, by the pressure feed flow of described expansion chamber 3, working medium circulation amount in described evaporator increases to some extent, effectively can promote heat dissipation capacity and the efficiency of the utility model heat-pipe radiating apparatus, and effectively can suppress the generation of radiator dry-out.
When the heat load putting on described base plate 9 starts to reduce, the impact that working medium in described expansion chamber 3 is subject to heating from the heat of described evaporation cavity 8 because of bottom weakens, pressure now in described expansion chamber 8 reduces gradually, therefore, the upper and lower surface of described flexible sheet 14 is by force unbalance, under the ever-reduced effect of upper surface active force, described flexible sheet 14 upwards can reduce deformation gradually, after liquid refrigerant in described working medium storing chamber 4 is reduced pressure, described working medium storing chamber 4 can be sucked go back to through the described inside water pipe 16 with described first unidirectional valve 17, liquid is returned in pressure by described expansion chamber 3, working medium circulation amount in described evaporator can reduce to some extent, what can reduce to cause because of liquid storage unnecessary in the circulatory system larger circulates resistance, the operation stability of effective lifting the utility model heat-pipe radiating apparatus and high efficiency.
In actual moving process, insulation chambers 22 1 aspect be arranged between described expansion chamber 3 and described first liquid-sucking core 6, second liquid-sucking core 7, described working medium storing chamber 4 play reduce that shell absorbs described base plate 9 add heat, on the other hand, described insulation chambers 22 the inside that the heat that can completely cut off surrounding environment is passed to described evaporator 2 is set, prevent described compensated cavity 4 inside from sharply making liquid refrigerant produce evaporation because of heat, block liquid and reduce the operation stability of heat-pipe radiator to the transmission of transformation interface.Heat-pipe radiating apparatus of the present utility model have employed the setting of two low thermal conductivity liquid-sucking core, first liquid-sucking core 6 adopts less porosity to ensure, and liquid-gas phase transition interface has higher capillary pumped pressure head, not easily dry up during heavy-duty service, and the second liquid-sucking core 7 adopts higher porosity, osmotic effect is good.Resultant effect shows as: the osmotic resistance reducing cooling working medium keeping heat pipe higher drive ram simultaneously and run in the transmitting procedure to evaporation cavity 8, and by a relatively large margin weaken base plate 9 from evaporation cavity 8 to the leakage heat compensating strong 5.
The above is only preferred implementation of the present utility model; it should be noted that; for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (7)
1. a heat-pipe radiating apparatus, comprise evaporator and condenser, it is characterized in that, described evaporator comprises housing, first heat exchanger core, second heat exchanger core, evaporation cavity, expansion chamber, working medium storing chamber, compensated cavity and insulation chambers, described expansion chamber is positioned at most external and the top of described housing, the inner side of described expansion chamber is provided with described insulation chambers, the inner side of described insulation chambers becomes described working medium storing chamber and compensated cavity by baffle for separating, the periphery of described compensated cavity is provided with described second heat exchanger core, the bottom of described second heat exchanger core connects with described first heat exchanger core, described evaporation cavity is formed between the lower surface of described first heat exchanger core and the base plate of described housing, in described evaporation cavity, the upper surface of described base plate is provided with multiple micro-channel, described micro-channel and described first liquid-sucking core close contact, the lower end of described insulation chambers and the upper surface flush of described micro-channel, the lower end of described expansion chamber connects with the base plate of described housing, be provided with flexible sheet between the top in described working medium storing chamber and described expansion chamber, between described flexible sheet and described dividing plate, be provided with back-moving spring, the water pipe being communicated with described working medium storing chamber and compensated cavity is installed in described compensated cavity, described water pipe is provided with the first unidirectional valve, inner liquid feeding pipeline one end is connected with described working medium storing chamber, the other end is positioned at described first liquid-sucking core and the second liquid-sucking core joint, and described inner liquid feeding pipeline is provided with the second unidirectional valve, be filled with phase change expansion working medium in described expansion chamber, in described compensated cavity, be filled with cooling working medium, steam connection one end is connected with the steam (vapor) outlet of described evaporation cavity, and the other end is connected with described condenser inlet, and liquid is taken over one end and is connected with the outlet of described condenser, and the other end is connected with the condensate liquid refluxing opening of described compensated cavity.
2. heat-pipe radiating apparatus according to claim 1, is characterized in that, the Gao Yukuan of described micro-channel is respectively 0.1-5mm, and described micro-channel is parallel with described steam (vapor) outlet or is arranged vertically.
3. heat-pipe radiating apparatus according to claim 1, is characterized in that, described housing is copper or stainless steel material.
4. heat-pipe radiating apparatus according to claim 1, is characterized in that, the cross section of described housing is circular or rectangle.
5. heat-pipe radiating apparatus according to claim 1, is characterized in that, the porosity of described first liquid-sucking core is higher than the porosity of described second liquid-sucking core.
6. heat-pipe radiating apparatus according to claim 1, is characterized in that, described first liquid-sucking core and the second liquid-sucking core are woven wire, molecular sieve, sintering metal powder or organic polymer.
7. heat-pipe radiating apparatus according to claim 1, is characterized in that, the porosity of described first liquid-sucking core is between 30%-50%, and the porosity of described second liquid-sucking core is between 50-80%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520868778.4U CN205105508U (en) | 2015-11-04 | 2015-11-04 | A heat radiation device of thermal pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520868778.4U CN205105508U (en) | 2015-11-04 | 2015-11-04 | A heat radiation device of thermal pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205105508U true CN205105508U (en) | 2016-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520868778.4U Expired - Fee Related CN205105508U (en) | 2015-11-04 | 2015-11-04 | A heat radiation device of thermal pipe |
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| CN (1) | CN205105508U (en) |
Cited By (1)
| 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 |
-
2015
- 2015-11-04 CN CN201520868778.4U patent/CN205105508U/en not_active Expired - Fee Related
Cited By (2)
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160323 Termination date: 20161104 |
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| CF01 | Termination of patent right due to non-payment of annual fee |